JP2003185735A - Intruder detection system, method and receiver - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an intruder detection system capable of saving power. A transmission device transmits a radio wave of a predetermined pulse signal modulated by an ultra-wideband impulse communication method to a monitoring area. The receiving device 20 includes an antenna 16 that receives at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area 18, and a delay profile characteristic that detects a delay profile characteristic value of the received radio wave. The presence / absence of an intruder in the monitoring area 18 is determined by using the value detection unit 21, the delay profile characteristic value S22 detected in a state where there is no intruder in the monitoring area 18, and the delay profile characteristic value S21 detected during monitoring. And a notification unit 24 for detecting the

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intruder detection system for detecting an intruder in a predetermined monitoring area, a method therefor, and a receiver.

[0002]

2. Description of the Related Art An intruder detection system for detecting an intruder (person) entering a predetermined monitoring area is known. The mainstream of such an intruder detection system is a detection device that uses an optical sensor and a notification device that notifies the detection result from the detection device. However, in the intruder detection system using such an optical sensor, there is a problem that the range that can be detected is limited by the straightness of light. In view of such a situation, for example, JP-A-11-
As the intruder detection system disclosed in Japanese Patent No. 308162, a system using a wireless communication device is proposed.
The intruder detection system of the publication includes a radio base station device that transmits a radio wave and a radio terminal device that measures the reception electric field strength of the radio wave. The received electric field strength measurement value and a reference reception electric field prepared in advance are used. The number of times that the difference from the strength value exceeds the permissible amount is counted, and if the number exceeds a predetermined number, it is determined that an intruder exists in the wireless coverage area and a notification operation is performed.

[0003]

However, in the conventional intruder detection system disclosed in the above-mentioned Japanese Patent Laid-Open No. 11-308162, fluctuations are detected at any position within the wireless coverage area. As a result, there are problems that false alarms increase and the reliability of the communication system is impaired. For example, when the intruder detection system is used in a factory, even when there is a machine that is driven unattended, even if there is a change in the characteristic location that is clearly different from that of the intruder, If it is within the wireless coverage area, there is a problem that the above-mentioned counting is performed and an erroneous notification is made.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is an object of the present invention to provide an intruder detection system and method capable of detecting an intruder in a surveillance area with high accuracy, and a receiving device. To aim.

[0005]

In order to solve the above-mentioned problems of the prior art and to achieve the above-mentioned object, the intruder detection system according to the first invention detects intruders within a predetermined monitoring area. An intruder detection system for detecting, comprising: a transmitting device for transmitting a radio wave of a predetermined pulse signal from the first antenna into the predetermined monitoring area; and a receiving device, wherein the receiving device includes the radio wave and A second antenna that receives at least one of the radio waves obtained by reflecting the radio waves in the monitoring area, and a delay profile that detects a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio waves. Characteristic value detecting means, a first delay profile characteristic value detected by the delay profile characteristic value detecting means in a state where the intruder is not present in the monitoring area, and the delay profile characteristic value at the time of monitoring. By using the second delay profile characteristic value value detecting means has detected, and a penetration detection means for detecting the presence of the intruder into the surveillance area.

The operation of the intruder detection system of the first invention is as follows. The transmitting device transmits a radio wave of a predetermined pulse signal from the first antenna into a predetermined monitoring area.
Then, the receiving device receives at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area, by the second antenna. Next, the delay profile characteristic value detecting means of the receiving device detects the delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave. Next, the intrusion detection unit detects the first delay profile characteristic value detected by the delay profile characteristic value detection unit in a state where the intruder is not present in the monitoring area, and the delay profile characteristic value detection unit detects the delay profile characteristic value during monitoring. The presence or absence of the intruder in the monitoring area is detected by using the second delay profile characteristic value.

In the intruder detection system of the first invention, preferably, the intrusion detection means compares the first delay profile characteristic value with the second delay profile characteristic value, and a result of the comparison is obtained. Based on this, the presence / absence of the intruder in the monitoring area is detected. In the intruder detection system of the first invention, preferably, the intrusion detection means is
The difference between the first delay profile characteristic value and the second delay profile characteristic value is obtained, and when the difference exceeds a predetermined threshold value, it is detected that the intruder is in the monitoring area. . Further, in the intruder detection system of the first invention, preferably, the delay profile characteristic value detecting means averages a plurality of electric field strengths detected at predetermined different timings to generate the second delay profile characteristic value. To do. In the intruder detection system of the first invention, preferably, the intrusion detection is performed when the second antenna receives a plurality of radio waves corresponding to a single pulse radio wave transmitted by the transmitting device. The means uses the electric field strength of a radio wave other than a radio wave received at a predetermined timing corresponding to a reflected wave from a moving object that is not an intruder in the monitoring area, among the plurality of received radio waves. The delay profile characteristic value of 2 is calculated.

The intruder detection method of the second invention is an intruder detection method for detecting an intruder within a predetermined monitoring area by using a transmitter and a receiver. A radio wave of a predetermined pulse signal is transmitted from the first antenna into the predetermined monitoring area, and a second antenna of the receiving device is obtained by reflecting the radio wave and the radio wave within the monitoring area. At least one of the radio waves is received, the receiving device detects a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and the receiving device does not have the intruder in the monitoring area. The presence or absence of the intruder in the monitoring area is detected using the first delay profile characteristic value detected in advance in the state and the second delay profile characteristic value detected at the time of monitoring.

A receiving device according to a third aspect of the invention is a receiving device used for detecting an intruder within a predetermined monitoring area, the antenna receiving a radio wave of a predetermined pulse signal, and the receiving device. Delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the generated radio wave, and first detected by the delay profile characteristic value detecting means in a state where the intruder is not present in the monitoring area. Intrusion detecting means for detecting the presence or absence of the intruding object in the monitoring area by using the delay profile characteristic value and the second delay profile characteristic value detected by the delay profile characteristic value detecting means at the time of monitoring. Have.

The intruder detection system of the fourth invention is an intruder detection system for detecting an intruder within a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from the first antenna to the predetermined antenna. A second device for receiving at least one of the radio wave and the radio wave obtained by reflection of the radio wave in the monitoring area. Antenna, delay profile characteristic value detecting means for detecting a first delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and the first delay input from the delay profile characteristic value detecting means. Delaying means for delaying the profile characteristic value for a predetermined time and outputting it as a second delay profile characteristic value; the first delay profile characteristic value and the second delay profile characteristic value;
And an intrusion detection unit that detects the presence or absence of the intruder in the monitoring area by using the delay profile characteristic value of.

The operation of the intruder detection system of the fourth invention is as follows. The transmitting device transmits a radio wave of a predetermined pulse signal from the first antenna into a predetermined monitoring area.
Then, the receiving device receives at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area, by the second antenna. Next, the delay profile characteristic value detecting means of the receiving device detects the first delay profile characteristic value indicating the time characteristic of the electric field intensity of the received radio wave, and the intrusion detecting means detects the first delay profile characteristic value. And output to the delay means. Then, the delay means delays the first delay profile characteristic value input from the delay profile characteristic value detecting means for a predetermined time and outputs it as a second delay profile characteristic value to the intrusion detecting means. Next, the intrusion detection means of the receiving device detects the presence or absence of the intruder in the monitoring area by using the input first delay profile characteristic value and the input second delay profile characteristic value.

The intruder detection method of the fifth invention is an intruder detection method for detecting an intruder within a predetermined monitoring area by using a transmitter and a receiver. A radio wave of a predetermined pulse signal is transmitted from the first antenna into the predetermined monitoring area, and a second antenna of the receiving device is obtained by reflecting the radio wave and the radio wave within the monitoring area. At least one of the radio waves is received, and in the receiving device, a delay profile characteristic value indicating a time characteristic of the electric field strength of the received radio wave is detected, and in the receiving device, the detected delay profile characteristic value, The detected delay profile characteristic value is compared with the detected delay profile characteristic value before a predetermined time from the delay profile characteristic value, and the receiving device receives the intrusion into the monitoring area based on a result of the comparison. To detect the presence or absence of an object.

A receiving device according to a sixth aspect of the present invention is a receiving device used for detecting an intruding object within a predetermined monitoring area, the antenna receiving a radio wave of a predetermined pulse signal, and the receiving device. Delay profile characteristic value detecting means for detecting a first delay profile characteristic value indicating the time characteristic of the electric field strength of the generated radio wave, and the first delay profile characteristic value input from the delay profile characteristic value detecting means for a predetermined time. Delaying means for delaying and outputting as a second delay profile characteristic value; and using the first delay profile characteristic value and the second delay profile characteristic value,
Intrusion detection means for detecting the presence or absence of the intruder in the monitoring area.

The intruder detection system according to the seventh invention is an intruder detection system for detecting an intruder within a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from the first antenna to the predetermined monitor. A second antenna having a transmitting device for transmitting within a region and a receiving device, wherein the receiving device receives at least one of the radio wave and a radio wave obtained by reflection of the radio wave within the monitoring area. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and the delay profile characteristic value detected by the delay profile characteristic value detecting means has changed by a predetermined value or more. Change detecting means for detecting whether or not the change is continuously detected, time detecting means for detecting a time when the change is continuously detected, and the detected time is determined to be a predetermined time or more. If the, and a notification processing unit for performing notification process.

The intruder detection method of the eighth invention is an intruder detection method for detecting an intruder in a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from the first antenna of the transmitter. The second antenna of the receiving device transmits and receives at least one of the radio wave and the radio wave obtained by the radio wave reflected in the monitoring area, and the receiving device receives the electric field of the received radio wave. The delay profile characteristic value indicating the time characteristic of strength is detected, and in the receiving device, it is detected whether or not the detected delay profile characteristic value has changed by a predetermined value or more, and in the receiving device, the change continues. The detected time is detected, and when the receiving device determines that the detected time is equal to or longer than a predetermined time, a notification process is performed.

A receiving device according to a ninth aspect of the invention is a receiving device used for detecting an intruding object within a predetermined monitoring area, the second antenna receiving a radio wave of a predetermined pulse signal; A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and whether or not the delay profile characteristic value detected by the delay profile characteristic value detecting means has changed by a predetermined value or more. A change detecting means for detecting the change, a time detecting means for detecting a time when the change is continuously detected, and a notification for performing a notification process when it is determined that the detected time is a predetermined time or more. And processing means.

The intruder detection system of the tenth aspect of the invention is an intruder detection system for detecting an intruder in a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from the first antenna to the predetermined monitor. A second antenna having a transmitting device for transmitting within a region and a receiving device, wherein the receiving device receives at least one of the radio wave and a radio wave obtained by reflection of the radio wave within the monitoring area. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave; and an intruder into the monitoring area based on the detected delay profile characteristic value. And a notification means for performing notification processing of the analysis result.

In the intruder detecting system according to the tenth aspect of the invention, preferably, the shape analyzing means generates position data indicating a position of the intruding object in the monitoring area, and the notifying means causes the position data. Notification processing is performed. Also, the tenth
In the intruder detection system of the invention described above, preferably, the shape analysis means generates image data indicating a result of the analysis, and the notification means performs notification processing of the image data.

An eleventh invention of an intruder detection method is an intruder detection method for detecting an intruder within a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from the first antenna of the transmitter. The second antenna of the receiving device transmits and receives at least one of the radio wave and the radio wave obtained by the radio wave reflected in the monitoring area, and the receiving device receives the electric field of the received radio wave. Detecting a delay profile characteristic value indicating a time characteristic of strength, in the receiving device, based on the detected delay profile characteristic value, analyzes the shape of an intruder into the monitoring area, in the receiving device, Notification processing of the analysis result is performed.

A receiving device according to the twelfth invention is a receiving device used for detecting an intruding object within a predetermined monitoring area, wherein the second antenna receives a radio wave of a predetermined pulse signal, and A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and a shape of an intruder into the monitoring area based on the detected delay profile characteristic value. It has a shape analyzing means for analyzing and a notifying means for notifying the result of the analysis.

An intruder detection system according to a thirteenth invention is an intruder detection system which has a first wireless communication device and a second wireless communication device and detects an intruder within a predetermined monitoring area. The first wireless communication device is obtained by the first antenna transmitting a radio wave of a predetermined pulse signal into the predetermined monitoring area, and the radio wave and the radio wave reflected in the monitoring area. A second antenna for receiving at least one of the radio waves, a delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of the electric field strength of the received radio wave, and the detected delay profile characteristic value. A first shape analysis means for analyzing the shape of an intruder in the monitoring area in the first direction, and a first transmission means for transmitting a shape analysis instruction to the second wireless communication device. , The above Receiving means for receiving the analysis result of the shape of the intruder in the second direction from the wireless communication device, and processing for notifying the analysis result of the intruder in the first direction and the second direction. Has a notification means to perform,
The second wireless communication device includes a third antenna for transmitting a radio wave of a predetermined pulse signal into the monitoring area, and at least one of the radio wave and the radio wave obtained by the radio wave reflected in the monitoring area. A fourth antenna for receiving one of the two, a second delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and the detected delay profile characteristic value. Based on the second shape analysis means for analyzing the shape of the intruding object in the monitoring area in the second direction, and the analysis result of the second shape analysis means obtained according to the shape analysis instruction. Is transmitted to the first wireless communication device.

In the intruder detection system of the thirteenth invention, preferably, the first wireless communication device is specified based on an analysis result of the intruder in the first direction and the second direction. The shape notifying means further comprises shape comparing means for judging whether or not the shape is a shape registered in advance, and the notifying means,
When the shape comparison means determines that the shape is not the pre-registered shape, processing of notifying the analysis result of the intruder in the first direction and the second direction is performed.

An intruder detecting method according to a fourteenth invention is an intruder detecting method for detecting an intruder within a predetermined monitoring area by using the first wireless communication device and the second wireless communication device,
A radio wave of a predetermined pulse signal is transmitted from the first antenna of the first radio communication device, and the second antenna of the first radio communication device reflects the radio wave and the radio wave in the monitoring area. Receiving at least one of the radio waves obtained by detecting the delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave, and detecting the delay profile characteristic value. In the device, the shape of an intruder in the first direction in the monitoring area is analyzed based on the detected delay profile characteristic value, and in the first wireless communication device, the second wireless communication device. A shape analysis instruction to a second antenna, the third antenna of the second wireless communication device transmits a radio wave of a predetermined pulse signal into the monitoring area, and the fourth antenna of the second wireless communication device transmits , The third Radio waves received by the fourth antenna in the second wireless communication device by receiving at least one of the radio waves transmitted from the antenna and the radio waves obtained by reflecting the radio waves in the monitoring area. The delay profile characteristic value that indicates the time characteristic of the electric field strength of is detected,
In the second wireless communication device, based on the detected delay profile characteristic value, the shape of an intruder in the monitoring area in the second direction is analyzed, and in the second wireless communication device, The analysis result of the second shape analysis unit obtained in response to the shape analysis instruction is transmitted to the first wireless communication device, and the first wireless communication device,
A process of notifying the analysis result of the intruder in the first direction and the second direction is performed.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. First Embodiment FIG. 1 is an overall configuration diagram of an intruder detection system 1 of the present embodiment. As shown in FIG. 1, an intruder detection system 1
Has a transmitter 10 and a receiver 20, for example. The transmitting device 10 and the receiving device 20 have a monitoring area 18
It is installed inside or around the monitoring area 18. In the present embodiment, for example, as shown in FIG. 1, a static body 14 such as a pillar or a shelf and a moving body 13 such as a machine tool or a robot are installed in the monitoring area 18.

The embodiment is an embodiment corresponding to the first to third inventions. Here, the intruder detection system 1 corresponds to the intruder detection system of the present invention, the transmitter 10 corresponds to the transmitter of the present invention, and the receiver 20 corresponds to the receiver of the present invention. The monitoring area 18 corresponds to the monitoring area of the present invention.

[Transmission Device 10] The transmission device 10 has an antenna 11 (first antenna of the present invention), and the antenna 1
1, the electric wave of the pulse signal modulated by the ultra-wide band impulse communication system is transmitted into the monitoring area 18. Here, the ultra-wide band impulse communication system is a radio technology that can effectively use frequency resources, and uses weak radio waves of a signal consisting of a pulse train with a very fine pulse width (for example, 1 ns or less), for example, at a baseband of about 100 Mbps. Transmission is performed. It is a short-range wireless communication system having a bandwidth on the order of GHz such that a value obtained by dividing the occupied bandwidth by the center frequency (for example, 1 GHz to 10 GHz) becomes approximately 1. In the present embodiment, by transmitting the radio wave of the pulse signal modulated by the ultra-wideband impulse communication method into the monitoring area 18, it is possible to save the radio wave as compared with the case of continuously transmitting the radio wave using the FM-CW wave (chirp). Electricity can be achieved. In addition, by using intermittent pulses, the monitoring area 1
The influence on the operation of the electronic device in 8 can be reduced.

[Reception Device 20] As shown in FIG. 1, the reception device 20 includes, for example, an antenna 16, a delay profile characteristic value detection unit 21, a storage unit 22, a comparison unit 23, and a notification unit 24. Here, the antenna 16 is the second embodiment of the present invention.
Corresponding to the antenna of the delay profile characteristic value detection unit 2
1 corresponds to the delay profile characteristic value detecting means of the present invention, and the comparing section 23 and the notifying section 24 correspond to the intrusion detecting means of the present invention.

The antenna 16 receives the radio wave transmitted from the antenna 11 and the radio wave obtained by reflecting the radio wave in the monitoring area 18. Specifically, in the state where there is no intruder in the monitoring area 18, the antenna 16 transmits the radio wave S1 transmitted from the antenna 11 as shown in FIGS.
0 directly through the path P_1 to the radio wave S10_1 (S1
6_4). At this time, the antenna 1
Reference numeral 6 designates the route 10 for the radio wave 10 transmitted from the antenna 11.
It is received as radio waves S10_3 (S16_3) and S10_4 (S16_4) reflected by the moving body 13 and the stationary body 14 via _3 and P_4, respectively. On the other hand, as shown in FIGS. 3 and 4, when there is an unauthorized intruder (person) 12 in the monitoring area 18, the antenna 16 transmits from the antenna 11 in addition to the radio waves S16_1, S16_3, S16_4. The transmitted radio wave 10 is reflected by the intruder 12 via the route P_2, and the radio wave S10_2 (S16_
2) Receive as.

The delay profile characteristic value detector 21 detects the electric field strength of the radio wave S16 received by the antenna 16,
Delay profile characteristic value data S21 indicating the characteristic of the detected electric field intensity is generated. The delay profile characteristic value detection unit 21 determines the delay profile characteristic value data S21.
The (first delay profile characteristic value data of the present invention) is output to the comparison unit 23. Here, the delay profile characteristic value data S21 is data in which the characteristic of the relationship between the electric field intensity of the radio wave S16 and the time detected by the delay profile characteristic value detection unit 21, for example, shown in FIGS. 5 and 6 is digitized. Here, FIG. 5 shows a case where there is no intruder in the monitoring area 18, as shown in FIGS. 1 and 2. Also,
FIG. 6 shows a case where an intruder 12 is present in the monitoring area 18, as shown in FIGS. 3 and 4. 5 and 6
, The electric field intensity patterns EI_1, EI_2, EI
_3 and EI_4 are radio waves S16 received by the antenna 16 via the paths P_1 to P_4 shown in FIG.
_1, S16_2, S16_3, and S16_4 correspond to the time characteristics of the electric field strength, respectively. That is, the delay profile characteristic value data S21 is composed of a plurality of electric field intensity patterns obtained from the results of reception with a delay time corresponding to the distance of each corresponding path.

The delay profile characteristic value detecting section 21 uses, as the delay profile characteristic value data S21, a pattern of the electric field intensity obtained in a predetermined period among the electric field intensities detected as shown in FIGS. 5 and 6, for example. To detect. The delay profile characteristic value detection unit 21 may, for example, among the electric field intensities detected as shown in FIGS. 5 and 6,
The average value of the electric field strength obtained during a predetermined period may be calculated and used as the delay profile characteristic value data S21.
Further, the delay profile characteristic value detection unit 21 performs statistical processing other than averaging to perform delay profile characteristic value data S.
21 may be calculated. At this time, the electric field intensity pattern EI_3 shown in FIGS. 5 and 6 is a time characteristic pattern of the electric field intensity corresponding to the radio wave S16_3 reflected by the moving body 13 shown in FIGS. 1 and 3, and the delay according to the position of the moving body 13 is delayed. It is received with time, and changes according to the movement of the moving body 13. Therefore, when calculating the delay profile characteristic value data S21, the delay profile characteristic value detecting unit 21 has a portion of the electric field intensity pattern EI_3 (see FIG. 5).
The period d shown in FIG. 6) is excluded from the calculation target. As a result, it is possible to prevent the notification unit 24 from erroneously determining that the variation in the electric field strength caused by the movement of the moving body 13 is caused by the intruder 12.

As shown in FIGS. 1 and 2, the storage unit 22 uses the delay profile characteristic value data detected by the delay profile characteristic value detecting unit 21 in the state where there is no intruder in the monitoring area 18 as a reference delay profile characteristic. Value data S22
It is stored as (second delay profile characteristic value data of the present invention).

The comparing section 23 receives the delay profile characteristic value data S input from the delay profile characteristic value detecting section 21.
21 is compared with the reference delay profile characteristic value data S22 read from the storage unit 22, and comparison result data S23 indicating the comparison result is output to the notification unit 24. Specifically, the comparison unit 23 determines that the delay profile characteristic value data S
21 and the reference delay profile characteristic value data S22 are obtained, and comparison result data S23 indicating the difference is output to the notification unit 24.

The notification unit 24 determines whether or not the comparison result data S23 input from the comparison unit 23 has exceeded a predetermined threshold value defined in advance. The notification signal S24 is transmitted to the security monitoring center 31.

[Security Monitoring Center 31] Upon receiving the notification signal S24 via the communication network 30, the security monitoring center 31 outputs at least one of an image and a sound indicating that there is an intruder in the monitoring area 18. To do.

An operation example of the intruder detection system 1 will be described below. [First Operation Example] In the operation example, a case where the reference delay profile characteristic value data S22 is stored in the storage unit 22 will be described as a pre-stage for monitoring the monitoring area 18. Figure 7
[Fig. 6] is a diagram for explaining the example of the operation. Step ST11: First, as shown in FIG. 1 and FIG. 2, in the state where there is no intruder in the monitoring area 18, the transmitter 1
0 transmits the radio wave S10 toward the monitoring area 18. Then, the radio wave S10 (S16_1) and the radio waves S16_3 and S16_4 obtained by reflecting the radio wave S10 on the moving body 13 and the stationary body 14 have a delay time corresponding to the length of each path of the receiving device 20. It is received by the antenna 16.

Step ST12: In the delay profile characteristic value detector 21, as shown in FIG.
Radio waves S16_1, S16_3, S16_ received at 6
The electric field intensity of No. 4 is detected, the plural electric field intensities detected at different timings are quantified by averaging, and delay profile characteristic value data S21 is generated. At this time, in the delay profile characteristic value detection unit 21, for example, of the electric field intensities detected as shown in FIGS. 5 and 6, the portion of the electric field intensity pattern EI_3 that changes according to the movement of the moving body 13 is averaged. Is excluded from the calculation target of.

Step ST13: The delay profile characteristic value data S21 generated in step ST12 is stored in the storage unit 22 as the reference delay profile characteristic value data S22.
Written in.

[Second Operation Example] In this operation example, the operation of the intruder detection system 1 when the intruder 12 is present in the monitoring area 18 will be described. FIG. 8 is a diagram for explaining the operation example. Step ST21: As shown in FIG. 1 and FIG. 2, the transmitter 10 transmits the radio wave S10 to the monitoring area 18 within the monitoring area 18.
Send inward intermittently. Then, the radio wave S10
(S16_1), and the radio wave S10 is the intruder 12,
Radio wave S16 obtained by reflection from moving body 13 and stationary body 14
_2, S16_3, and S16_4 are received by the antenna 16 of the receiving device 20 with a delay time according to the distance of each route.

Step ST22: In the delay profile characteristic value detecting section 21 of the receiving device 20, as shown in FIG. 5, the radio waves S16_1 and S16 received by the antenna 16 are received.
The electric field strengths of _2, S16_3 and S16_4 are detected,
A plurality of electric field intensities detected at different timings are digitized by averaging or the like to generate delay profile characteristic value data S21. At this time, in the delay profile characteristic value detection unit 21, for example, of the electric field intensities detected as shown in FIGS. 5 and 6, the portion of the electric field intensity pattern EI_3 that changes according to the movement of the moving body 13 is averaged. Is excluded from the calculation target of. The delay profile characteristic value data S21 is the delay profile characteristic value detecting unit 2
1 is output to the comparison unit 23.

Step ST23: The reference delay profile characteristic value data S22 is read from the storage unit 22 by the comparison unit 23 of the receiving device 20. The comparison unit 23 obtains the difference between the delay profile characteristic value data S21 input in step ST22 and the reference delay profile characteristic value data S22.

Step ST24: In the notification section 24 of the receiving device 20, it is judged whether or not the comparison result data S23 input from the comparison section 23 exceeds a predetermined threshold value defined in advance, and it is judged that it has been exceeded. To step ST2
If not, the process returns to step ST21.

Step ST25: The notification signal S24 is transmitted from the notification unit 24 of the receiving device 20 to the security monitoring center 31 via the communication network 30. As a result, when the security monitoring center 31 receives the notification signal S24 via the communication network 30, it outputs at least one of an image and a sound indicating that there is an intruder in the monitoring area 18.

As described above, according to the intruder detection system 1, the delay profile characteristic value data is used to
By detecting the intruder, it is possible to accurately and highly accurately detect the intruder in the monitoring area. That is, according to the intruder detection system 1, the portions of the electric field intensity pattern EI_3 shown in FIGS. 5 and 6 that fluctuate according to the movement of the moving body 13 are the delay profile characteristic value data S21 and S2 to be compared.
Since it is not reflected in No. 2, it is possible to prevent the notification unit 24 from erroneously determining that the variation of the electric field strength caused by the movement of the moving body 13 is caused by the intruder 12. Therefore, the intruding object can be detected with high accuracy. By increasing the accuracy of intruder detection in this way, false alarms can be eliminated.

Further, according to the intruder detection system 1, since the transmitter 10 intermittently transmits the radio wave of the pulse signal of the ultra wideband impulse communication system, the FM-
Power saving can be achieved as compared with the case where radio waves are continuously transmitted using a CW wave (chirp). Further, by using the intermittent pulse, it is possible to reduce the influence on the operation of the electronic device in the monitoring area 18. Further, according to the intruder detection system 1, the directivity of the antenna 11 and the antenna 16 can be independently set by separately providing the transmitter 10 and the receiver 20, and the accuracy of intruder detection and The accuracy of detecting the position of the intruding object can be improved.

Second Embodiment FIG. 9 is an overall configuration diagram of an intruder detection system 101 of this embodiment. As shown in FIG. 9, the intruder detection system 101 includes, for example, a transmitter 10 and a receiver 120.
Have. The transmission device 10 is the same as that described in the first embodiment. Hereinafter, the receiving device 120 will be described.

[Reception Device 120] As shown in FIG. 9, the reception device 120 includes, for example, an antenna 16, a delay profile characteristic value detection unit 21, a delay unit 122, a comparison unit 23, and a notification unit 24. In FIG. 9, the antenna 16,
The delay profile characteristic value detection unit 21, the comparison unit 23, and the notification unit 24 are the same as those described in the first embodiment. The embodiment is an embodiment corresponding to the fourth to sixth inventions. Here, the intruder detection system 101 corresponds to the intruder detection system of the present invention, the transmission device 10 corresponds to the transmission device of the present invention, and the reception device 20 corresponds to the reception device of the present invention. The monitoring area 18 corresponds to the monitoring area of the present invention. Here, the antenna 16 corresponds to the second antenna of the present invention, the delay profile characteristic value detecting unit 21 corresponds to the delay profile characteristic value detecting unit of the present invention, and the delay unit 122 corresponds to the delay unit of the present invention. The comparison unit 23 and the notification unit 24 correspond to the intrusion detection means of the present invention.

In the receiving device 120, the delay profile characteristic value data S21 detected by the delay profile characteristic value detecting section 21 is output to the comparing section 23 and the delay section 122. The delay unit 122 includes the delay profile characteristic value detection unit 2
The delay profile characteristic value data S21 input from 1 is delayed for a predetermined time to obtain the delay profile characteristic value data S12.
2 is output to the comparison unit 23. The comparison unit 23 obtains a difference between the delay profile characteristic value data S21 input from the delay profile characteristic value detection unit 21 and the delay profile characteristic value data S122 input from the delay unit 122, and compares the comparison result data S23 indicating the difference. Report unit 24
Output to.

Hereinafter, the intruder detection system 10 shown in FIG.
The operation example 1 will be described. FIG. 10 is a diagram for explaining the operation example. Step ST31: The transmitter 10 intermittently transmits the radio wave S10 into the monitoring area 18. Then, as described using FIG. 4, the radio wave S10 (S16_1),
And the radio waves S16_2 and S16_ obtained by reflecting the radio wave S10 on the intruder 12, the moving body 13, and the stationary body 14.
3, S16_4 is received by the antenna 16 of the receiving device 120 with a delay time according to the distance of each route.

Step ST32: In the delay profile characteristic value detecting section 21 of the receiving device 120, the antenna 16
Radio waves S16_1, S16_2, S16_ received at
The electric field strengths of S3 and S16_4 are detected, and the plurality of electric field strengths detected at different timings are quantified by averaging or the like to generate delay profile characteristic value data S21. At this time, the delay profile characteristic value detection unit 21
In the above, for example, of the electric field intensities detected as shown in FIGS. 5 and 6, the part of the electric field intensity pattern EI_3 that varies according to the movement of the moving body 13 is excluded from the calculation target of the averaging. Delay profile characteristic value data S2
1 is from the delay profile characteristic value detection unit 21 to the comparison unit 2
3 and the delay unit 122.

Step ST33: The delay section characteristic data S21 input from the delay profile characteristic value detecting section 21 in step ST32 and the delay detected a predetermined time before input from the delay section 122 by the comparing section 23 of the receiving device 120. The difference from the profile characteristic value data S122 is obtained.

Step ST34: In the notification unit 24 of the receiving device 120, it is determined whether or not the comparison result data S23 input from the comparison unit 23 exceeds a predetermined threshold value defined in advance. To step ST
25, and if not, step ST31
Return to processing.

Step ST35: The notification signal S24 is transmitted from the notification unit 24 of the receiving device 120 to the security monitoring center 31 via the communication network 30. This allows
Upon receiving the notification signal S24 via the communication network 30, the security monitoring center 31 outputs at least one of an image and a sound indicating that there is an intruder in the monitoring area 18.

As described above, the intruding object detection system 101 can also obtain the same effect as that of the intruding object detection system 1 of the first embodiment. Further, according to the intruder detection system 101, as in the first embodiment, the monitoring area 18
The procedure of detecting and storing the reference delay profile characteristic value data in a state where there is no intruder inside is unnecessary, and the procedure up to the start of the monitoring operation of the intruder detection system 101 can be simplified.

Third Embodiment FIG. 11 is an overall configuration diagram of an intruder detection system 201 of this embodiment. As shown in FIG. 11, the intruder detection system 201 includes, for example, a transmitter 10 and a receiver 1.
Have twenty. The transmitter 10 and the receiver 120 are
It is installed in the monitoring area 18 or around the monitoring area 18. In the present embodiment, as in the first embodiment, in the monitoring area 18, for example, as shown in FIG. 11, a static body 14 such as a pillar or a shelf and a moving body 13 such as a machine tool or a robot are installed. ing.

The embodiment is an embodiment corresponding to the seventh to ninth inventions. Here, the intruder detection system 20
1 corresponds to the intruder detection system of the present invention, and a transmitter 1
0 corresponds to the transmitting device of the present invention, and the receiving device 220 corresponds to the receiving device of the present invention. The monitoring area 18 corresponds to the monitoring area of the present invention.

[Transmitting Device 10] The transmitting device 10 is the same as that described in the first embodiment, has an antenna 11 (first antenna of the present invention), and transmits an ultra wideband impulse through the antenna 11. The electric wave of the pulse signal modulated by the communication method is transmitted into the monitoring area 18.

[Reception Device 220] As shown in FIG.
The reception device 220 includes, for example, the antenna 16, the delay profile characteristic value detection unit 21, the storage unit 22, the comparison unit 23, the measurement time detection unit 211, and the notification unit 224. Here, the antenna 16 corresponds to the second antenna of the present invention,
The delay profile characteristic value detection unit 21 corresponds to the delay profile characteristic value detection unit of the present invention, the comparison unit 24 corresponds to the change detection unit of the present invention, and the measurement time detection unit 211 corresponds to the time detection unit of the present invention. The notification unit 24 corresponds to the notification processing means of the present invention.

The antenna 16 receives the radio wave transmitted from the antenna 11 and the radio wave obtained by reflecting the radio wave in the monitoring area 18. Specifically, in a state where there is no intruder in the monitoring area 18, the antenna 16 directly transmits the radio wave S10 transmitted from the antenna 11 via the path P_1 as shown in FIGS. 11 and 12.
It is received as (S16_1). At this time, the antenna 16 transmits the radio wave 10 transmitted from the antenna 11,
The radio waves S10_3 (S16_S) reflected by the moving body 13 and the static body 14 via the paths P_3 and P_4, respectively.
3) and S10_4 (S16_4).
On the other hand, as shown in FIG. 13 and FIG.
When there is an unauthorized intruder (person) 12 inside, the antenna 16 causes the radio waves S16_1, S16_3, and S16_4.
In addition, the radio wave S10_ transmitted from the antenna 11 is reflected by the intruder 12 via the path P_2.
2 (S16_2).

The delay profile characteristic value detector 21 detects the electric field strength of the radio wave S16 received by the antenna 16,
Delay profile characteristic value data S21 indicating the characteristic of the detected electric field intensity is generated. The delay profile characteristic value detection unit 21 determines the delay profile characteristic value data S21.
(Delay profile characteristic value data of the present invention)
Output to 3. Here, the delay profile characteristic value data S21 is, for example, the characteristic of the relationship between the electric field intensity of the radio wave S16 and the time detected by the delay profile characteristic value detecting unit 21 shown in FIGS. 5 and 6 as in the first embodiment. Is the numerical data.

The delay profile characteristic value detecting section 21 uses, as the delay profile characteristic value data S21, a pattern of the electric field intensity obtained in a predetermined period among the electric field strengths detected as shown in FIGS. 5 and 6, for example. To detect. The delay profile characteristic value detection unit 21 may, for example, among the electric field intensities detected as shown in FIGS. 5 and 6,
The average value of the electric field strength obtained during a predetermined period may be calculated and used as the delay profile characteristic value data S21.
Further, the delay profile characteristic value detection unit 21 performs statistical processing other than averaging to perform delay profile characteristic value data S.
21 may be calculated. At this time, as in the first embodiment, the electric field intensity pattern EI_3 shown in FIGS. 5 and 6 is obtained.
11 is a time characteristic pattern of the electric field intensity corresponding to the radio wave S16_3 reflected by the moving body 13 shown in FIGS. 11 and 13, which is received with a delay time corresponding to the position of the moving body 13 and which corresponds to the movement of the moving body 13. It fluctuates. Therefore, when calculating the delay profile characteristic value data S21, the delay profile characteristic value detecting unit 21 excludes the portion of the electric field intensity pattern EI_3 (the portion of the period d shown in FIGS. 5 and 6) from the calculation target. As a result, the change of the electric field strength caused by the movement of the moving body 13 is notified by the notification unit 2
It can be avoided that 4 is mistakenly determined to be due to the intruder 12.

As in the first embodiment, the storage unit 22 stores the delay profile detected by the delay profile characteristic value detection unit 21 in the state where there is no intruding object in the monitoring area 18, as shown in FIGS. 11 and 12. The characteristic value data is stored as reference delay profile characteristic value data S22.

Similar to the first embodiment, the comparison unit 23 compares the delay profile characteristic value data S21 input from the delay profile characteristic value detection unit 21 with the reference delay profile characteristic value data S22 read from the storage unit 22. Then, the comparison result data S23 indicating the comparison result is output to the measurement time detection unit 211. Specifically, the comparison unit 23
Calculates the difference between the delay profile characteristic value data S21 and the reference delay profile characteristic value data S22, and compares the comparison result data S23 indicating the difference with the measurement time detecting unit 211.
Output to.

Based on the difference detected by the comparison unit 23, the measurement time detection unit 211 detects, for example, the time during which the delay profile characteristic value data continues to be changed by a predetermined value or more, and shows the detection result. The measurement time data S221 is output to the notification unit 224.

The notification unit 224 determines whether or not the measurement time data S221 input from the measurement time detection unit 211 is equal to or longer than a predetermined (prescribed) predetermined time, and determines that it is equal to or longer than the predetermined time. Then, the notification signal S24 is transmitted to the security monitoring center 31 via the communication network 30. That is, the notification process is performed.

[Security Monitoring Center 31] Upon receiving the notification signal S24 via the communication network 30, the security monitoring center 31 outputs at least one of an image and a sound indicating that there is an intruder in the monitoring area 18. To do.

An operation example of the intruder detection system 201 will be described below. [First Operation Example] An operation example in which the reference delay profile characteristic value data S22 is stored in the storage unit 22 as a pre-stage for monitoring the monitoring area 18 has been described in the first embodiment with reference to FIG. Same as the case. As a result, the reference delay profile characteristic value data S22 is written in the storage unit 22.

[Second Operation Example] In the operation example, FIG.
An operation example of the intruder detection system 201 when the intruder 12 is present in the monitoring area 18 as shown in FIG. Figure 1
FIG. 5 is a diagram for explaining the operation example. Step ST51: As shown in FIGS. 13 and 14,
The transmitter 10 intermittently transmits the radio wave S10 into the monitoring area 18 toward the monitoring area 18. Then, the radio wave S
10 (S16_1) and the radio wave S10 is the intruder 1
2. Radio wave S obtained by reflection from moving body 13 and stationary body 14
16_2, S16_3 and S16_4 have an antenna 16 of the receiving device 220 with a delay time according to the distance of each route.
Will be received at.

Step ST52: In the delay profile characteristic value detecting unit 21 of the receiving device 220, as shown in FIG. 5, the radio waves S16_1 and S1 received by the antenna 16 are received.
The electric field strengths of 6_2, S16_3, and S16_4 are detected, and the plurality of electric field strengths detected at different timings are digitized by averaging or the like to generate delay profile characteristic value data S21. At this time, in the delay profile characteristic value detection unit 21, for example, FIG.
Among the electric field strengths detected as shown in, the part of the electric field strength pattern EI_3 that changes according to the movement of the moving body 13 is excluded from the calculation target of the averaging. The delay profile characteristic value data S21 is output from the delay profile characteristic value detecting unit 21 to the comparing unit 23.

Step ST53: The reference delay profile characteristic value data S22 is read from the storage unit 22 by the comparing unit 23 of the receiving device 220. The comparison unit 23 obtains the difference between the delay profile characteristic value data S21 input in step ST52 and the reference delay profile characteristic value data S22.

Step ST54: The measurement time detecting section 211 of the receiving device 220 judges whether or not the difference detected by the comparing section 23 exceeds a predetermined threshold value, and if it judges that there is a change, there is a change. If so, the process proceeds to step ST55. If not, the process returns to step ST51.

Step ST55: Measurement time detecting section 211
Detects the time during which the state in which the delay profile characteristic value data has changed continues, and outputs the measurement time data S221 indicating the detection result to the notification unit 224. Then, the notification unit 224 determines whether or not the measurement time data S221 input from the measurement time detection unit 211 is equal to or longer than a preset (specified) predetermined time, and determines that it is equal to or larger than the predetermined time. The process proceeds to step ST56, and if not, the process returns to step ST51.

Step ST56: The notification section 224 transmits the notification signal S24 to the security monitoring center 31 via the communication network 30. That is, the notification process is performed.

As described above, according to the intruder detection system 201, an intruder is detected by using the delay profile characteristic value data, and it is further monitored to determine whether or not the change has continued for a predetermined time or longer. Intruders in the area can be detected accurately and highly accurately. That is, according to the intruder detection system 201, the portion of the electric field intensity pattern EI_3 shown in FIGS. 5 and 6 that varies depending on the movement of the moving body 13 is the delay profile characteristic value data S2 to be compared.
1 and S22 are not reflected, it is possible to prevent the notification unit 24 from erroneously determining that the variation in the electric field strength caused by the movement of the moving body 13 is caused by the intruder 12.
Therefore, the intruding object can be detected with high accuracy. By increasing the accuracy of intruder detection in this way, false alarms can be eliminated. Fourth Embodiment FIG. 16 is an overall configuration diagram of an intruder detection system 301 of this embodiment. As shown in FIG. 11, the intruder detection system 301 includes, for example, a wireless communication device 310 and a wireless communication device 320. The wireless communication device 310 and the wireless communication device 320 are installed in the monitoring area 18 or in the vicinity of the monitoring area 18. In this embodiment, the first
Similar to the embodiment, in the monitoring area 18, for example, as shown in FIG.
As shown in FIG. 6, static bodies 14 such as columns and shelves, and moving bodies 13 such as machine tools and robots are installed.

The embodiment is an embodiment corresponding to the tenth to fifteenth inventions. Here, the intruder detection system 301 corresponds to the intruder detection system of the present invention, the wireless communication device 310 corresponds to the first wireless communication device of the present invention,
The wireless communication device 320 corresponds to the second wireless communication device of the present invention. The monitoring area 18 corresponds to the monitoring area of the present invention.

[Wireless Communication Device 310] FIG.
3 is a functional block diagram of the wireless communication device 310 shown in FIG. As illustrated in FIG. 17, the wireless communication device 310 includes, for example, an antenna 311, an antenna 312, a transmission unit 341, a delay profile characteristic value detection unit 342, a storage unit 343, a delay profile comparison unit 344, an X-direction shape analysis unit 345, and the like. It has a shape comparison unit 346 and a notification unit 324. here,
The antenna 311 and the transmission unit 341 correspond to the first antenna and the first transmission means of the present invention, and the antenna 312.
Corresponds to the second antenna and the receiving means of the present invention, the delay profile characteristic value detecting section 21 corresponds to the delay profile characteristic value detecting means of the present invention, and the X-direction shape analyzing section 34.
5 corresponds to the first shape analysis means of the present invention, and the notification unit 32
4 corresponds to the notification means of the present invention.

The antenna 312 receives the radio wave transmitted from the antenna 321 and the radio wave obtained by reflecting the radio wave in the monitoring area 18. Specifically, the monitoring area 1
When there is no intruder in the antenna 8, the antenna 312 is
And as shown in FIG. 18, the radio wave S311 transmitted from the antenna 311 is directly transmitted via the path P_1.
It is received as 10_1 (S16_4). Further, at this time, the antenna 322 causes the radio wave S10_3 transmitted from the antenna 311 to be reflected by the moving body 13 and the stationary body 14 via the paths P_3 and P_4, respectively.
It is received as (S16_3) and S10_4 (S16_4). On the other hand, as shown in FIGS. 19 and 20, when there is an unauthorized intruder (person) 12 in the monitoring area 18, the antenna 16 causes the radio waves S16_1 and S16_
In addition to 3 and S16_2, the radio wave 10 transmitted from the antenna 11 is received as the radio wave S10_2 (S16_2) reflected by the intruder 12 via the route P_2.

The delay profile characteristic value detector 342
The electric field strength of the radio wave S16 received by the antenna 312 is detected, and delay profile characteristic value data S342 indicating the characteristic of the detected electric field strength is generated. The delay profile characteristic value detection unit 342 outputs the delay profile characteristic value data S342 (delay profile characteristic value data of the present invention) to the delay profile comparison unit 344 and the X-direction shape analysis unit 345. Here, the delay profile characteristic value data S342 is, for example, the characteristic of the relationship between the electric field strength of the radio wave S16 and the time detected by the delay profile characteristic value detecting unit 342, as in the first embodiment. Is the numerical data.

The delay profile characteristic value detector 342
For example, of the electric field intensities detected as shown in FIGS. 5 and 6, the electric field intensity pattern obtained in a predetermined period is detected as the delay profile characteristic value data S342. Note that the delay profile characteristic value detection unit 342 calculates an average value of the electric field intensities obtained in a predetermined period among the electric field intensities detected as shown in FIGS. It may be the characteristic value data S342. Also, the delay profile characteristic value detection unit 342
May calculate the delay profile characteristic value data S342 by performing statistical processing other than averaging. At this time, the first
Similar to the embodiment, the electric field intensity pattern EI_3 shown in FIGS. 5 and 6 is a time characteristic pattern of electric field intensity corresponding to the radio wave S16_3 reflected by the moving body 13 shown in FIGS. 16 and 19, and is located at the position of the moving body 13. It is received with a corresponding delay time and varies according to the movement of the moving body 13. Therefore, the delay profile characteristic value detection unit 21
Excludes the portion of the electric field intensity pattern EI_3 (the portion of the period d shown in FIGS. 5 and 6) from the calculation target when calculating the delay profile characteristic value data S342. As a result, it is possible to prevent the notification unit 324 from erroneously determining that the change in the electric field strength caused by the movement of the moving body 13 is caused by the intruder 12.

The storage unit 343, like the first embodiment,
As shown in FIG. 11 and FIG. 12, the delay profile characteristic value detection unit 34 is provided in a state where there is no intruder in the monitoring area 18.
The delay profile characteristic value data detected by 2 is stored as reference delay profile characteristic value data S343.

The delay profile comparison unit 344, like the comparison unit 23 of the first embodiment, has the delay profile characteristic value data S342 input from the delay profile characteristic value detection unit 342 and the reference delay profile characteristic read from the storage unit 343. The value data S22 is compared, and the comparison result data S344 indicating the comparison result is compared with the X direction shape analysis unit 3.
Output to 45. Specifically, the delay profile comparison unit 344 calculates the difference between the delay profile characteristic value data S342 and the reference delay profile characteristic value data S343, and outputs the comparison result data S344 indicating the difference to the X-direction shape analysis unit 345. . In addition, the delay profile comparison unit 344 uses the delay profile characteristic value data S342.
Then, instead of performing comparison with the reference delay profile characteristic value data, the difference may be calculated by comparing with the delay profile characteristic value data obtained in the past (for example, obtained immediately before). This eliminates the need to acquire and store the reference delay profile characteristic value data.

When the comparison result of the delay profile comparison unit 344 indicates that there is a predetermined difference, the X-direction shape analysis unit 345 uses the delay profile characteristic value data S342 input from the delay profile characteristic value detection unit 342 as a basis. The shape of the intruder in the X-axis direction is analyzed, and the analysis result is output to the shape comparison unit 346 as analysis result data S345.

The shape comparison unit 346 is the X-direction shape analysis unit 3.
Analysis result data in the X-axis direction S345 input from S45
And the analysis result data in the Y-axis direction input from the wireless communication device 320 via the antenna 312, the shape of the intruder in the XY coordinate system is specified, and the specified shape is registered in advance. It is determined whether or not they match, and comparison data S345 indicating the result is output to the notification unit 324.

When the notification unit 324 indicates that the comparison data S345 input from the shape comparison unit 346 does not match, the notification unit 324 transmits the security monitoring center 3 via the communication network 30.
1 to transmit the notification signal S24. That is, the notification process is performed.

Hereinafter, an operation example of the above-mentioned radio communication device 310 will be described. [First Operation Example] An operation example in which the reference delay profile characteristic value data S343 is stored in the storage unit 343 as a preliminary step of monitoring the monitoring area 18 will be described with reference to FIG.
This is the same as the case described in the embodiment. As a result, the reference delay profile characteristic value data S343 is stored in the storage unit 34.
Written in 3.

[Second Operation Example] In the operation example, FIG.
An operation example of the intruder detection system 301 when the intruder 12 is present in the monitoring area 18 as shown in FIG. Figure 2
1 and FIG. 22 are diagrams for explaining the operation example. Step ST61: Wireless communication device 310 by user
Is turned on.

Step ST62: As shown in FIGS. 19 and 20, the transmitter 341 of the wireless communication device 310 intermittently transmits the radio wave S10 into the monitoring area 18 toward the monitoring area 18. Then, the radio wave S10 (S16_
1) and the radio waves S16_2 and S1 obtained by reflecting the radio wave S10 on the intruder 12, the moving body 13, and the static body 14.
6_3 and S16_4 are received by the antenna 312 of the wireless communication device 310 with a delay time according to the distance of each route.

Step ST63: In the delay profile characteristic value detecting section 342 of the radio communication device 310, as shown in FIG. 5, the radio waves S16_1, S16_2, S16_3 and S16_4 shown in FIG.
Of the electric field strength of the signal is detected, and the plurality of electric field strengths detected at different timings are digitized by averaging or the like to generate delay profile characteristic value data S342. At this time, in the delay profile characteristic value detection unit 342,
For example, of the electric field strengths detected as shown in FIGS. 5 and 6, the portion of the electric field strength pattern EI_3 that changes according to the movement of the moving body 13 is excluded from the calculation target of the averaging. The delay profile characteristic value data S342 is output from the delay profile characteristic value detecting unit 342 to the delay profile comparing unit 344.

Step ST64: The delay profile comparison section 344 reads the reference delay profile characteristic value data S343 from the storage section 343. The delay profile comparison unit 344 obtains the difference between the delay profile characteristic value data S342 input in step ST63 and the reference delay profile characteristic value data S343.

Step ST65: The transmitting section 341 judges whether or not the difference detected by the delay profile comparing section 344 exceeds a predetermined threshold value, and if it judges that there is a change, it is judged that there is a change. If not, the process returns to step ST62.

Step ST66: The transmitting unit 341 transmits the shape analysis instruction in the Y direction to the wireless communication device 320.

Step ST67: X direction shape analysis unit 34
5 analyzes the shape of the intruder in the X-axis direction based on the delay profile characteristic value data S342 input from the delay profile characteristic value detecting unit 342, and outputs the analysis result to the shape comparing unit 346 as analysis result data S345. To do.

Step ST68: The antenna 312 receives the shape analysis result in the Y-axis direction from the wireless communication device 310.

Step ST69: The shape comparing section 346
Analysis result data S345 in the X-axis direction input from the X-direction shape analysis unit 345 in step ST67, and step ST
At 68, the shape of the intruder in the XY coordinate system is specified using the analysis result data in the Y-axis direction received from the wireless communication device 320, and whether or not the specified shape matches the shape registered in advance. To judge. Further, the shape comparison unit 346 detects the position of the intruding object in the X direction within the monitoring area 18, and outputs the position data to the notification unit 324.

Step ST70: If it is determined that they match in step ST69, the process of step ST71 is performed. If it is determined that they do not match, step ST71 is performed.
Returning to the processing of 62.

Step ST71: When the notification unit 324 indicates that the comparison data S345 input from the shape comparison unit 346 do not match, the intruder input to the security monitoring center 31 via the communication network 30 in Step ST69. The notification signal S24 including the position data is transmitted. That is, the notification process is performed. Further, the notification unit 324 may transmit the notification signal S24 including image data representing the shape of the intruder.

[Wireless Communication Device 320] FIG. 23 is a functional block diagram of the wireless communication device 320. As shown in FIG. 23, the wireless communication device 320 includes, for example, an antenna 32.
2, antenna 322, delay profile characteristic value detection unit 4
42, a storage unit 443, a delay profile comparison unit 444,
It has a Y-direction shape analysis unit 445 and a transmission unit 446.
Here, the antenna 321 corresponds to the third antenna of the present invention, the antenna 322 corresponds to the fourth antenna of the present invention, the Y-direction shape analysis unit 445 corresponds to the second shape analysis means of the present invention, The transmitting unit 446 corresponds to the second transmitting means of the present invention. Here, the delay profile characteristic value detection unit 442, the storage unit 443, and the delay profile comparison unit 444 include the delay profile characteristic value detection unit 34 described above.
2. The delay profile comparing section 344 and the delay profile comparing section 344 have the same functions.

The Y-direction shape analysis unit 445 analyzes the shape of the intruder in the Y-axis direction based on the comparison result of the delay profile comparison unit 444 and the delay profile characteristic value data S442 from the delay profile characteristic value detection unit 442. Then, the analysis result data S445 is output to the transmission unit 446 as the analysis result.

The transmitting unit 446 includes a Y-direction shape analyzing unit 445.
The analysis result data S445 input from
1 to the wireless communication device 310.

The wireless communication device 320 performs the synchronization acquisition process with the wireless communication device 310, so that the wireless communication device 3
The analysis instruction by 10 may be unnecessary. The synchronization acquisition process may be wired or wireless.

An operation example of radio communication apparatus 320 will be described below. FIG. 24 is a flowchart for explaining the operation example. Step ST81: When the wireless communication device 320 determines that the analysis instruction has been received from the wireless communication device 310, the process proceeds to step ST82.

Step ST82: The power of the wireless communication device 320 is turned on.

Step ST83: As shown in FIGS. 19 and 20, the transmitter 446 of the radio communication device 320 intermittently transmits the radio wave S10 into the monitoring area 18 toward the monitoring area 18. Then, the radio wave S10 (S16_
1) and the radio waves S16_2 and S1 obtained by reflecting the radio wave S10 on the intruder 12, the moving body 13, and the static body 14.
6_3 and S16_4 are received by the antenna 322 of the wireless communication device 320 with a delay time according to the distance of each route.

Step ST84: In the delay profile characteristic value detecting section 442 of the radio communication device 320, as shown in FIG. 5, the radio waves S16_1, S16_2, S16_3 and S16_4 shown in FIG.
Of the electric field strength of the signal is detected, and the plurality of electric field strengths detected at different timings are digitized by averaging or the like to generate delay profile characteristic value data S342. At this time, in the delay profile characteristic value detection unit 442,
For example, of the electric field intensities detected as shown in FIG. 5 and FIG. 6, the part of the electric field intensity pattern EI_3 that changes according to the movement of the moving body 13 is excluded from the calculation target of the averaging. The delay profile characteristic value data S442 is output from the delay profile characteristic value detecting unit 442 to the delay profile comparing unit 444 and the Y-direction shape analyzing unit 445.

Step ST85: Y-direction shape analysis unit 44
5 analyzes the shape of the intruder in the Y-axis direction based on the delay profile characteristic value data S442 input from the delay profile characteristic value detecting unit 342, and outputs the analysis result data S445 to the transmitting unit 446. .

Step ST86: The transmitting section 446 causes the analysis result data S4 in the Y-axis direction input in step ST85.
45 is transmitted from the antenna 321 to the wireless communication device 310.

[Security Monitoring Center 31] Upon receiving the notification signal S24 via the communication network 30, the security monitoring center 31 outputs at least one of an image and a sound indicating that there is an intruder in the monitoring area 18. To do.

In the overall operation of the intruder detection system 301, the operation of the wireless communication device 310 described with reference to FIGS. 21 and 22 and the operation of the wireless communication device 320 described with reference to FIG. 24 are performed in parallel. Be seen.

As described above, according to the intruder detection system 301, when there is an intruder in the monitoring area 18, the two-dimensional shape of the intruder is specified and compared with the previously registered shape, It is possible to detect intruders with higher accuracy. According to the intruder detection system 301,
The same effects as the effects described in the first and second embodiments can be exhibited.

The present invention is not limited to the above embodiments. For example, in the above-described embodiment, the case where the radio wave S10 is transmitted by the ultra-wideband impulse communication system has been illustrated.
In addition, OFDM (Orthogonal Frequency Division Mult)
Radio wave S by iplexing) method or spread spectrum method
10 may be transmitted.

Further, in the above-described embodiment, the case where the notification unit notifies the security monitoring center 31 when the intruder 12 is detected has been exemplified, but an alarm provided inside the monitoring area 18 or outside the monitoring area 18 is given. The device may be activated.

Further, in the above-described embodiment, the case where the monitoring is performed by using one set of the transmitting device 10 and the receiving devices 20 and 120 is illustrated, but a plurality of sets of the transmitting device 10 and the receiving device 2 are used.
You may monitor using 0,120.

For example, not the security monitoring center 31 but the mobile phone or PDA (Personal)
It may be a device such as Data Assistant).

Further, in the above-described fourth embodiment, as in the intruder detection system 401 shown in FIG. 25, the wireless communication device 42 for detecting the shape and position of an intruder in the Z direction.
0 may be further provided. Thereby, the position and shape of the intruder in the monitoring area 18 in the XYZ coordinate system can be notified.

Further, in the first embodiment, the second embodiment and the third embodiment, the transmitter and the receiver may be provided in the same housing. Further, the antennas 311 and 312 shown in FIG. 16 may be single antennas. Also,
Both antennas 321 and 322 may be single antennas.

[0115]

As described above, according to the present invention,
It is possible to provide an intruder detection system and method capable of detecting an intruder in a monitoring area with high accuracy, and a receiving device.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an intruder detection system according to a first embodiment of the present invention, showing a case where there is no intruder in a monitoring area.

FIG. 2 is a diagram for explaining a path of a radio wave when there is no intruder in the monitoring area.

FIG. 3 is an overall configuration diagram of an intruder detection system according to the first embodiment of the present invention, showing a case where an intruder is present in the monitoring area.

FIG. 4 is a diagram for explaining a path of a radio wave when an intruder is present in the monitoring area.

FIG. 5 is a diagram of FIG. 1 when there is no intruder in the surveillance area.
6 is a diagram for explaining a delay profile characteristic value detected by the delay profile characteristic value detection unit shown in FIG.

FIG. 6 is a diagram of FIG. 1 when an intruder is present in the surveillance area.
6 is a diagram for explaining a delay profile characteristic value detected by the delay profile characteristic value detection unit shown in FIG.

FIG. 7 is a diagram showing the intruding object detection system according to the first embodiment of the present invention as a pre-stage for monitoring a monitoring area,
7 is a flowchart for explaining an operation of storing reference delay profile characteristic value data in a storage unit.

FIG. 8 is a flowchart for explaining the operation of the intruder detection system when there is an intruder in the monitoring area in the intruder detection system according to the first embodiment of the present invention.

FIG. 9 is an overall configuration diagram of an intruder detection system according to a second embodiment of the present invention.

10 is a diagram for explaining an operation example of the intruder detection system shown in FIG.

FIG. 11 is an overall configuration diagram of an intruder detection system according to a third embodiment of the present invention.

12 is a diagram for explaining a path of a radio wave when there is no intruder in the monitoring area in FIG. 11.

FIG. 13 is an overall configuration diagram of an intruder detection system according to a third embodiment of the present invention, showing a case where an intruder is present in the monitoring area.

FIG. 14 is a diagram for explaining a radio wave path when an intruder is present in the monitoring area in FIG. 13;

15 is a flowchart for explaining an operation example of the intruder detection system shown in FIG.

FIG. 16 is an overall configuration diagram of an intruder detection system according to a fourth embodiment of the present invention.

17 is a wireless communication device 310 shown in FIG.
It is a functional block diagram of.

FIG. 18 is a diagram for explaining a path of a radio wave when there is no intruder in the monitoring area in FIG. 16.

FIG. 19 is an overall configuration diagram of an intruder detection system according to a fourth embodiment of the present invention, showing a case where an intruder is present in the monitoring area.

20 is a diagram for explaining a radio wave path when an intruder is present in the monitoring area in FIG. 19;

21 is a flowchart for explaining an operation example of the wireless communication device 310 of the intruder detection system shown in FIG.

22 is a flowchart for explaining an operation example of the wireless communication device 310 of the intruder detection system shown in FIG.

FIG. 23 is a wireless communication device 320 shown in FIG.
It is a functional block diagram of.

24 is a flowchart for explaining an operation example of the wireless communication device 310 of the intruder detection system shown in FIG.

FIG. 25 is a diagram for explaining another example of the intruder detection system shown in FIG. 16.

[Explanation of symbols]

1, 101, 201, 301, 401 ... Intruder detection system, 10 ... Transmitter, 11 ... Antenna, 13 ... Moving body,
14 ... Static body, 16 ... Antenna, 20, 120 ... Receiving device, 21 ... Delay profile characteristic value detecting section, 22 ... Storage section, 23 ... Comparison section, 24 ... Notification section, 30 ... Communication network, 31
... Security monitoring center, 122 ... Delay section, 31
0,320 ... Wireless communication device, 341 ... Transmission unit, 342 ...
Delay profile characteristic value detection unit, 343 ... Storage unit, 34
4 ... Delay profile comparison part, 345 ... X direction shape analysis part, 346 ... Shape comparison part, 324 ... Notification part, 442 ... Delay profile characteristic value detection part, 443 ... Storage part, 444
... delay profile comparison unit, 445 ... Y direction shape analysis unit, 446 ... transmission unit

Continued front page    F-term (reference) 2G005 DA04                 5C084 AA01 AA07 BB04 BB31 CC26                       DD07 FF02 FF26 GG12 GG54                       GG65                 5J070 AB01 AC01 AD02 AE09 AF01                       AH14 AH19 AH33 AJ14 AK14                       AK22 AK31 AK32

Claims (30)

[Claims] 1. An intruder detection system for detecting an intruder within a predetermined monitoring area, comprising: a transmitting device for transmitting a radio wave of a predetermined pulse signal from the first antenna into the predetermined monitoring area. A second antenna for receiving at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area; and an electric field of the received radio wave. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of intensity; and a first delay profile characteristic value detected by the delay profile characteristic value detecting means in a state where the intruder is not present in the monitoring area. And the second delay profile characteristic value detected by the delay profile characteristic value detecting means at the time of monitoring, the intrusion for detecting the presence or absence of the intruder in the monitoring area. Intruder detection system and means out. 2. The intrusion detecting means compares the first delay profile characteristic value with the second delay profile characteristic value, and based on a result of the comparison, the intruder into the monitoring area. The intruder detection system according to claim 1, which detects the presence or absence of an intruder. 3. The intrusion detecting means obtains a difference between the first delay profile characteristic value and the second delay profile characteristic value, and when the difference exceeds a predetermined threshold value, the monitoring is performed. The intruder detection system according to claim 2, wherein the intruder is detected in the area. 4. The delay profile characteristic value detecting means,
The intruder detection system according to claim 1, wherein a plurality of electric field intensities detected at predetermined different timings are averaged to generate the second delay profile characteristic value. 5. When the second antenna receives a plurality of radio waves corresponding to a single pulsed radio wave transmitted by the transmitting device, the intrusion detection means selects the plurality of received radio waves. A second electric field intensity of an electric wave other than an electric wave received at a predetermined timing corresponding to a reflected wave from the moving body that is not an intruder and is installed in the monitoring area. The intruder detection system according to claim 1, wherein the delay profile characteristic value is calculated. 6. The intruder detection system according to claim 1, wherein the intrusion detection means performs a notification process or an alarm generation process when it is detected that the intruder is present in the monitoring area. 7. The intruder detection system according to claim 1, wherein the pulse signal is an ultra-wideband impulse signal. 8. An intruder detection method for detecting an intruder within a predetermined monitoring area by using a transmitting device and a receiving device, wherein the first monitoring area is provided from a first antenna of the transmitting device. A second antenna of the receiving device receives at least one of the radio wave and the radio wave obtained by reflection of the radio wave in the monitoring area, and the reception The device detects a delay profile characteristic value indicating a time characteristic of the electric field strength of the received radio wave, and the receiving device detects a first delay profile in advance in a state where the intruder is not present in the monitoring area. An intruder detection method for detecting the presence or absence of the intruder in the monitoring area using a characteristic value and the second delay profile characteristic value detected during monitoring. 9. A receiving device used for detecting an intruder within a predetermined monitoring area, the antenna receiving a radio wave of a predetermined pulse signal, and time characteristics of electric field strength of the received radio wave. And a first delay profile characteristic value detected by the delay profile characteristic value detecting means in a state where the intruder is not present in the monitoring area, and a delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating A receiving apparatus having: an intrusion detection unit that detects the presence or absence of the intruder in the monitoring area by using the second delay profile characteristic value detected by the delay profile characteristic value detection unit. 10. An intruder detection system for detecting an intruder within a predetermined monitoring area, comprising: a transmitter for transmitting a radio wave of a predetermined pulse signal from the first antenna into the predetermined monitoring area. A second antenna for receiving at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area; and an electric field of the received radio wave. Delay profile characteristic value detecting means for detecting a first delay profile characteristic value indicating intensity time characteristic; and second delay profile characteristic value input from the delay profile characteristic value detecting means for a predetermined time to delay the second delay profile characteristic value.
And a second delay profile characteristic value for outputting as a delay profile characteristic value, and intrusion detection for detecting the presence or absence of the intruder in the monitoring area by using the first delay profile characteristic value and the second delay profile characteristic value. Intrusion detection system having means. 11. An intruder detection method for detecting an intruder within a predetermined monitoring area by using a transmitting device and a receiving device, wherein the predetermined monitoring area is provided from a first antenna of the transmitting device. A second antenna of the receiving device receives at least one of the radio wave and the radio wave obtained by reflection of the radio wave in the monitoring area, and the reception In the device, the delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio wave is detected, and in the receiving device, the detected delay profile characteristic value and the delay profile characteristic value a predetermined time before the delay profile characteristic value. An intruder detection that compares the detected delay profile characteristic value and detects the presence or absence of the intruder in the monitoring area based on the result of the comparison in the receiving device. Law. 12. A receiving device used for detecting an intruder within a predetermined monitoring area, the antenna receiving a radio wave of a predetermined pulse signal, and time characteristics of electric field strength of the received radio wave. Delay profile characteristic value detecting means for detecting a first delay profile characteristic value, and the first delay profile characteristic value input from the delay profile characteristic value detecting means is delayed for a predetermined time to generate a second delay profile characteristic value.
And a second delay profile characteristic value for outputting as a delay profile characteristic value, and intrusion detection for detecting the presence or absence of the intruder in the monitoring area by using the first delay profile characteristic value and the second delay profile characteristic value. A receiver having means. 13. An intruder detection system for detecting an intruder within a predetermined monitoring area, comprising: a transmitting device for transmitting a radio wave of a predetermined pulse signal from the first antenna into the predetermined monitoring area. A second antenna for receiving at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area; and an electric field of the received radio wave. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of intensity; and a change detecting means for detecting whether or not the delay profile characteristic value detected by the delay profile characteristic value detecting means has changed by a predetermined value or more. And a time detection unit that detects a time when the change is continuously detected, and a notification process is performed when it is determined that the detected time is equal to or longer than a predetermined time. Intruder detection system and a distribution processing unit. 14. When the second antenna receives a plurality of radio waves corresponding to a single pulse radio wave transmitted by the transmitting device, the delay profile characteristic value detecting means is configured to detect the plurality of received radio waves. Of the above, using the electric field intensity of radio waves other than the radio waves received at the predetermined timing corresponding to the reflected wave from the moving body that is not the intruding object in the monitoring area, which corresponds to the position where the moving body is installed, The intruder detection system according to claim 13, wherein the delay profile characteristic value is calculated. 15. The change detecting means detects a first delay profile characteristic value detected by the delay profile characteristic value detecting means in a state where the intruder is not present in the monitoring area, and the delay profile characteristic value detecting time at the time of monitoring. 14. The change is detected when there is a difference equal to or more than a predetermined value with the second delay profile characteristic value detected by the means.
The intruder detection system described in. 16. The change detecting means sets a predetermined value between a delay profile characteristic value previously detected by the delay profile characteristic value detecting means and a latest delay profile characteristic value detected by the delay profile characteristic value detecting means. The intruder detection system according to claim 13, wherein the change is detected when there is a difference equal to or more than a value. 17. The statistical processing means for statistically processing the time detected by the time detection means to calculate a statistical value, wherein the reporting processing means performs reporting processing based on the statistical value. The intruder detection system described in. 18. An intruder detecting method for detecting an intruder within a predetermined monitoring area, comprising transmitting a radio wave of a predetermined pulse signal from a first antenna of a transmitting device, and transmitting a second pulse of a second pulse of a receiving device. An antenna receives at least one of the radio waves and the radio waves obtained by reflecting the radio waves in the monitoring area, and in the receiving device, a delay profile characteristic indicating a time characteristic of the electric field strength of the received radio waves. A value is detected, in the receiving device, it is detected whether or not the detected delay profile characteristic value has changed by a predetermined value or more, and in the receiving device, the time during which the change is continuously detected is detected, A method for detecting an intruder that performs a notification process when the receiving device determines that the detected time is equal to or longer than a predetermined time. 19. A receiver used for detecting an intruder within a predetermined monitoring area, comprising: a second antenna for receiving a radio wave of a predetermined pulse signal; and an electric field strength of the received radio wave. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of, and a change detecting means for detecting whether or not the delay profile characteristic value detected by the delay profile characteristic value detecting means has changed by a predetermined value or more. A receiving device having a time detecting means for detecting a time during which the change is continuously detected, and a notification processing means for performing a notification process when it is determined that the detected time is equal to or longer than a predetermined time. . 20. An intruder detection system for detecting an intruder within a predetermined monitoring area, comprising: a transmitting device for transmitting a radio wave of a predetermined pulse signal from the first antenna into the predetermined monitoring area. A second antenna for receiving at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area; and an electric field of the received radio wave. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of intensity; and a shape analyzing means for analyzing the shape of an intruder into the monitoring area based on the detected delay profile characteristic value. An intruder detection system, comprising: a notification unit that performs notification processing of a result of the analysis. 21. The intrusion according to claim 20, wherein the shape analysis unit generates position data indicating a position of the intruder in the monitoring area, and the notification unit performs notification processing of the position data. Object detection system. 22. The intruder detection system according to claim 20, wherein the shape analysis unit generates image data indicating a result of the analysis, and the notification unit performs notification processing of the image data. 23. An intruder detection method for detecting an intruder within a predetermined monitoring area, wherein a radio wave of a predetermined pulse signal is transmitted from a first antenna of a transmitter and a second antenna of a receiver is transmitted. An antenna receives at least one of the radio waves and the radio waves obtained by reflecting the radio waves in the monitoring area, and in the receiving device, a delay profile characteristic indicating a time characteristic of the electric field strength of the received radio waves. A value is detected, the receiving device analyzes the shape of an intruder in the monitoring area based on the detected delay profile characteristic value, and the receiving device performs notification processing of the result of the analysis. Intruder detection method. 24. A receiver used to detect an intruder within a predetermined monitoring area, the second antenna receiving a radio wave of a predetermined pulse signal, and the electric field strength of the received radio wave. A delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of, and a shape analyzing means for analyzing the shape of an intruder into the monitoring area based on the detected delay profile characteristic value, And a notification unit that performs notification processing of the analysis result. 25. An intruder detection system, comprising a first wireless communication device and a second wireless communication device, for detecting an intruder within a predetermined monitoring area, said first wireless communication device. Is a first antenna for transmitting a radio wave of a predetermined pulse signal into the predetermined monitoring area, and a first antenna for receiving at least one of the radio wave and the radio wave obtained by the radio wave reflected in the monitoring area. 2 antennas, a delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating a time characteristic of the electric field intensity of the received radio wave, and based on the detected delay profile characteristic value, into the monitoring area. Shape analysis means for analyzing the shape of the intruder in the first direction, and a first shape analysis instruction for transmitting a shape analysis instruction to the second wireless communication device.
Transmitting means for receiving the analysis result of the shape of the intruder in the second direction from the second wireless communication device; and the intruder in the first direction and the second direction. And a notification means for performing a process of notifying the analysis result of 1., the second wireless communication device, a third antenna for transmitting a radio wave of a predetermined pulse signal into the monitoring area, the radio wave and the monitoring A fourth antenna that receives at least one of the radio waves obtained by reflecting the radio waves in the area, and a second delay that detects a delay profile characteristic value indicating the time characteristic of the electric field strength of the received radio waves. Profile characteristic value detection means; second shape analysis means for analyzing the shape of an intruder in the monitoring area in the second direction based on the detected delay profile characteristic value; and the shape analysis instruction. Intruder detection system and a second transmission means for transmitting the analysis result of the second shape analysis unit obtained in accordance with the first wireless communication device. 26. In the first wireless communication device, is the shape specified based on the analysis result of the intruder in the first direction and the second direction a registered shape? The notification means further includes shape comparison means for determining whether or not the shape comparison means determines whether the shape is in the first direction or the second direction when the shape comparison means determines that the shape is not the registered shape. The intruder detection system according to claim 25, which performs a process of notifying the analysis result of the intruder. 27. The first wireless communication device further includes change detection means for detecting whether or not the delay profile characteristic value detected by the delay profile characteristic value detection means has changed by a predetermined value or more, The first shape analysis means, when it is detected that the delay profile characteristic value has changed by a predetermined value or more, based on the detected delay profile characteristic value, a first direction of an intruder into the monitoring area. 26. The first transmitting means for analyzing the shape according to claim 25 transmits a shape analysis instruction to the second wireless communication device when it is detected that the delay profile characteristic value has changed by a predetermined value or more. The intruder detection system described. 28. The first wireless communication device uses the analysis result in the X-axis direction, which is the first direction, and the analysis result in the Y-axis direction, which is the second direction, to detect the intruder. The intruder according to claim 25, further comprising a third shape analysis unit that analyzes a two-dimensional shape in an XY coordinate system, and the notification unit performs a process of notifying an analysis result by the third shape analysis unit. Detection system. 29. A fifth antenna for transmitting a radio wave of a predetermined pulse signal into the monitoring area, and receiving at least one of the radio wave and the radio wave obtained by reflecting the radio wave within the monitoring area. A sixth antenna, a third delay profile characteristic value detecting means for detecting a delay profile characteristic value indicating the time characteristic of the electric field intensity of the received radio wave, and the above-mentioned delay profile characteristic value based on the detected delay profile characteristic value. Third shape analysis means for analyzing the shape in the Z-axis direction of an intruder entering the monitoring area, and an analysis result of the third shape analysis means obtained according to the shape analysis instruction, for the first wireless communication. It further has a 3rd radio | wireless communication apparatus which has a 3rd transmission means to transmit to a communication apparatus, Comprising: The said 1st transmission means of the said 1st radio | wireless communication apparatus carries out shape analysis to the said 3rd radio communication apparatus. Send instructions Then, the third shape analysis unit of the first wireless communication device uses the analysis result in the X-axis direction, the analysis result in the Y-axis direction, and the analysis result in the Z-axis direction to detect the intruder. 26. The intruder detection system according to claim 25, which analyzes a three-dimensional shape of the XYZ coordinate system of FIG. 30. An intruder detection method for detecting an intruder within a predetermined monitoring area using a first wireless communication device and a second wireless communication device, the method comprising the steps of: A radio wave of a predetermined pulse signal is transmitted from the first antenna, and the second antenna of the first wireless communication device transmits at least one of the radio wave and the radio wave obtained by reflecting the radio wave in the monitoring area. And a delay profile characteristic value indicating a time characteristic of the electric field strength of the received radio wave is detected in the first wireless communication device, and the detected delay profile is detected in the first wireless communication device. Analyzing a shape of an intruder in the first direction in the monitoring area based on a characteristic value; and transmitting a shape analysis instruction to the second wireless communication apparatus in the first wireless communication apparatus, Second wireless communication A third antenna location, transmits a radio wave having a predetermined pulse signal to the surveillance area, the second fourth antenna of the wireless communication device, the third
Received at least one of the radio wave transmitted from the antenna and the radio wave obtained by reflecting the radio wave in the monitoring area, and received by the fourth antenna in the second wireless communication device. A delay profile characteristic value indicating the time characteristic of the electric field strength of the radio wave is detected, and in the second wireless communication device, based on the detected delay profile characteristic value, the second Analyzing the shape in the direction, transmitting the analysis result of the second shape analysis means obtained in response to the shape analysis instruction to the first wireless communication apparatus in the second wireless communication apparatus, An intruder detection method for performing a process of notifying an analysis result of the intruder in the first direction and the second direction in the first wireless communication device.