JP2012251959A - Radio positioning system and radio positioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a radio positioning system and a radio positioning device capable of highly accurately positioning two-dimensional or three-dimensional positions of a mobile terminal or an RFID tag, or both by executing one-way communication or two-way communication in time division between a radio base station installed near an illumination device and the mobile terminal.SOLUTION: To position a two-dimensional or three-dimensional position by using a radio signal, a radio based station is installed near the inside or the outside of an illumination device. A power distribution cable for supplying power to the illumination device is formed as a twist pair. Power is supplied to the illumination device and the radio base station via the power distribution cable. A digital signal is transmitted to the radio base station.

Description

The present invention performs one-way communication or two-way communication in a time-division manner using a radio signal between a radio base station and a mobile terminal, an RFID tag, or both of them. Alternatively, the present invention relates to a wireless positioning system and a wireless positioning device for positioning both of these two-dimensional or three-dimensional positions with high accuracy.

Conventionally, a wireless positioning system that performs positioning using a wireless signal has been proposed. (For example, see Patent Documents 1 to 3)

JP 2009-253494 A JP 2006-023261 A JP 2007-010639 A

  In the "wireless communication terminal, wireless positioning system, lighting system, air conditioning system, and parking lot management system" described in Patent Document 1, wireless communication that can reduce the influence of multipath and improve distance measurement accuracy In order to obtain a terminal, a wireless positioning system, a lighting system, an air conditioning system, and a parking lot management system, the wireless communication terminal is configured by a plurality of wireless communication terminals having a function of transmitting and receiving wireless signals. A wireless communication terminal in a wireless ranging system that obtains a distance between wireless communication terminals based on a time until reception, and having a directivity in a predetermined direction and an antenna for transmitting and receiving a wireless signal .

When the wireless communication terminal is applied to a lighting system, calculate the distance between a plurality of preset distance measuring terminal equipment and the lighting equipment, and transmit the calculated distance data to the position calculation terminal, The position calculation means of the position calculation terminal uses the distance data and the positions of a plurality of distance measuring terminals set in advance, based on a method such as triangulation, for example, the position of the distance measuring terminal and the lighting fixture. Calculate the position.
As described above, in the conventional "wireless communication terminal, wireless positioning system, lighting system, air conditioning system, and parking lot management system", the distance between the plurality of ranging terminals and the lighting fixture is calculated, and the lighting fixture The position is measured by a position calculation terminal, and it is necessary to install a plurality of distance measuring terminals, which is not an economical method.

  On the other hand, in the conventional “active tag device” described in Patent Document 2, the directional antennas 21a and 21b of the receiving unit 2 are directed to face the direction 31 of the directional antenna of the transmitting unit 1, and the transmitting unit 1 Changes in timing, amplitude, frequency, phase, or a combination of the received high-frequency signals when the directional antennas 21a and 21b are switched while transmitting high-frequency signals are detected in real time, and the direction in which the transmitting means 1 is located is detected. However, although it is said that the distance between the transmitting means 1 and the receiving means 2 is detected, the means or method for detecting the distance between the transmitting means 1 and the receiving means 2 is not clarified, and There is a problem that has not been promoted.

Further, in the conventional “active tag device” described in Patent Document 3, a plurality of antennas are connected to the transmitting means on the fixed side, and a plurality of antennas synchronized with or orthogonal to individual system synchronization signals from the antennas. High accuracy by periodically transmitting measurement signals, receiving the system synchronization signal at the receiving means carried by the moving body, detecting the relative distance and direction, and detecting the direction from the average value of the short relative distance However, the role of the system synchronization signal or individual synchronization signal for detecting the relative distance and direction with high accuracy is not described, and the distance is measured by one-way communication. In some cases, sufficient positioning accuracy cannot be obtained, and there is a problem that the relation with the lighting device is not promoted.

The present invention has been made to solve the above-described problems, and wireless communication is performed between a wireless base station installed around or inside a lighting facility and a mobile terminal, an RFID tag, or both. To detect the two-dimensional or three-dimensional position of a mobile terminal, RFID tag, or both of them with high accuracy and in a short time by performing one-way communication or two-way communication by time division using signals. An object of the present invention is to provide a wireless positioning system and a wireless positioning device at low cost.

  A wireless positioning system and a wireless positioning device according to the present invention are installed around or inside a lighting facility, and are used to measure a two-dimensional or three-dimensional position with high accuracy using a wireless signal. A transmission cable for supplying power to the wireless base station, a wireless base station for receiving the supply of power through the transmission cable, measuring the direction and distance, and positioning the position, and a digital signal superimposed on the transmission cable Or a plurality of directional antennas comprising a branching device for separating digital signals and a mobile terminal, an RFID tag, or both, and mounting the wireless base station on a ceiling near a lighting facility By setting the directivity direction to be directly below, the effect of multipath is reduced and high-accuracy positioning is possible.

Here, the transmission cable has leakage suppression means for suppressing at least leakage of the transmitted digital signal to the outside as an electromagnetic wave signal, and the wireless base station intermittently transmits at least the wireless signal. Transmitting / receiving means for transmitting or receiving, control means for controlling the transmitting / receiving means, a plurality of directional antennas installed at intervals of one wavelength or less of the radio signal, and the plurality of directivities An antenna switching means for periodically switching the antenna, and the mobile terminal, the RFID tag, or both of them transmit / receive a radio signal intermittently or receive a radio signal; and the transmitting means Control means for controlling, and an arbitrary number of directional antennas having a directional direction opposite to the directional antenna of the radio base station.
In addition, by arranging a plurality of wireless base stations in or near the lighting equipment, not only equipment costs but also construction costs can be reduced.

As described above, according to the present invention, two-dimensional or three-dimensional positions of a mobile terminal, an RFID tag, or both of them can be obtained by performing one-way communication using radio signals or two-way communication in a time division manner. A wireless positioning system and a wireless positioning device for detecting in real time with high accuracy can be realized at low cost.

The block diagram of the radio positioning system by the 1st Embodiment of this invention Another block diagram of the wireless positioning system according to the first embodiment of the present invention Another block diagram of the wireless positioning system according to the first embodiment of the present invention Sectional view of the transmission cable of the present invention Another sectional view of the transmission cable of the present invention External view of illumination means of the present invention Assembly drawing of LED and directional antenna element of the present invention

A wireless positioning system and a wireless positioning device according to the present invention are installed in the vicinity of a lighting facility as shown in FIG. 1 to FIG. 4 and claim 1 according to the present invention. In a wireless positioning system for positioning a 3D or 3D position,
The wireless positioning system includes a transmission cable for supplying power to the lighting equipment, a wireless base station that receives power supply via the transmission cable, and a digital signal superimposed on or separated from the transmission cable. And a mobile terminal, an RFID tag, or both of which is a target for measuring a position by measuring a direction and a distance.

  In addition, the transmission cable includes at least leakage suppression means for suppressing leakage of the transmitted digital signal as an electromagnetic wave signal to the outside, and the wireless base station receives at least the wireless signal. For periodically switching between the plurality of directional antennas, a plurality of directional antennas installed at intervals of one wavelength or less of the radio signal, and a receiving means for controlling the receiving means An antenna switching means, and the mobile terminal, the RFID tag, or both of them, a transmission means for intermittently transmitting a radio signal, a control means for controlling the transmission means, and an arbitrary number Directional antenna.

  In addition, as shown in claim 2, the radio base station includes at least transmitting means for intermittently transmitting the wireless signal, control means for controlling the transmitting means, and one wavelength or less of the wireless signal A plurality of directional antennas installed at intervals, and antenna switching means for periodically switching the plurality of directional antennas, and the mobile terminal, the RFID tag, or both of them are radio signals. Receiving means, control means for controlling the receiving means, and any number of directional antennas.

  Further, as shown in claim 3, the radio base station at least transmits / receives the radio signal intermittently in a time division manner, and control means for controlling the transmitter / receiver means; A plurality of directional antennas installed at intervals of one wavelength or less of the radio signal; and an antenna switching means for switching the plurality of directional antennas periodically or in a time division manner, and the movement The terminal includes transmission / reception means for receiving radio signals in time division or intermittent transmission, control means for controlling the transmission / reception means, and an arbitrary number of directional antennas.

In addition, as shown in claim 4, the radio base station is installed in a lower part of the ceiling, in the interior of the illumination facility, in the periphery of the illumination facility, or a combination thereof, and the directional antenna of the radio base station Installation means for installing the directional beam downward is provided.
Further, according to a fifth aspect of the present invention, the wireless base station has an integrated structure with the lighting device, or an integrated structure with the illumination means of the lighting device.
Moreover, as shown in claim 6, the illumination means is illumination by LED, and is a structure that is attached to the illumination device by a screw-type base, and the wireless base station is incorporated in the illumination means, The LED of the illumination means and the directional antenna of the wireless base station are assembled on a common printed circuit board, or a combination thereof.

According to a seventh aspect of the present invention, there is a radome means for allowing both light and a radio signal to pass through at a lower part of the illumination means, and a shielding means for shielding at least the radio signal at an upper part of the illumination means. Or both.
In addition, as shown in claim 8, when the wireless base station measures the position of the mobile terminal, the RFID tag, or both of them, the lighting device is started up according to the positioning result or Control means for stopping is provided.
Moreover, as shown in claim 9, there are a plurality of the radio base stations, the plurality of radio base stations are connected to a central control device via the transmission cable, and the central control device is at least connected to an Internet line. A function of connecting, a function of controlling the plurality of radio base stations, and a function of receiving and managing location information from the mobile terminal, the RFID tag, or both.

Further, as shown in claim 10, when the central control apparatus or the server receives a positioning request signal from the mobile terminal via the plurality of radio base stations, an optimum radio signal is selected from the plurality of radio base stations. It has a function of selecting a base station and instructing the selected radio base station to transmit a positioning signal at a time division timing in response to a positioning request signal transmitted from the mobile terminal.
In addition, as shown in claim 11, the wireless positioning system is connected to an Internet line or a communication line, and position positioning is performed for a mobile terminal having an identification signal registered in the wireless positioning system, an RFID tag, or both of them. Provide service.
According to a twelfth aspect of the present invention, the transmission cable is two pairs of twisted pair cables or two sets of coaxial cables, and the two sets are assigned to at least the upstream direction and the downstream direction of the digital signal.

(Embodiment 1)
FIG. 1 is a configuration diagram of a wireless positioning system according to the first embodiment of the present invention. In FIG. 1, 10a and 10b are wireless base stations, 20 is an access point, 21 is a communication line or Internet line, 30 is a mobile terminal or RFID tag, 100 is a wireless positioning system, 103 is a distribution board facility, 104a and 104b are lighting facilities 105a and 105b are transmission cables, 501 is a ceiling, and 502 is a floor.

In the wireless positioning system 100, the access point 20 is installed in or around the switchboard equipment 103 and connected to a communication line or Internet line 21, and the radio base stations 10a and 10b are installed on the ceiling 501. It is assumed that the mobile terminal or the RFID tag 30 is installed on the floor surface 502 or moving on the floor surface 502 inside or around the lighting facilities 104a and 104b.
The mobile terminal or RFID tag 30 intermittently transmits a radio signal including at least a system synchronization signal, an identification signal, and a positioning signal, and the radio base stations 10a and 10b that have received the radio signal The position of the terminal or RFID tag is measured and the position is measured, and the positioning result is sent to the server or a central control device (not shown) via the communication line 21 together with the identification signal. send.

The server or the central control device that has received the positioning result determines whether or not the identification signal has already been registered, and when receiving the positioning result from a plurality of radio base stations, for example, at the time of positioning The optimum radio base station having the highest received signal strength is selected, and a location registration acceptance signal is transmitted to the selected radio base station. The radio base station that has received the location registration acceptance signal transmits the radio signal including the positioning signal to the mobile terminal that requests to send back the positioning signal until the location registration acceptance is canceled thereafter at the time division timing. Return the positioning signal and send it.
Contrary to the above, a radio signal including a system synchronization signal, an identification signal, and a positioning signal is intermittently transmitted from the radio base stations 10a and 10b. It is also possible to measure the position of the own station.
In addition, the wireless positioning system 100 can develop a wireless positioning business by providing a wireless positioning service to a mobile terminal or RFID tag that has received registration of an identification signal.

FIG. 2 is another configuration diagram of the wireless positioning system according to the first embodiment of the present invention. In FIG. 2, 10 is a radio base station, 15a-1 to 15a-4 are a plurality of directional antennas, 30 is a mobile terminal, RFID tag, or both, 201 is the radio base station 10 and the mobile terminal or RFID tag The distance between the mobile terminal 30 and the RFID tag 30 is a direction 202 as viewed from the radio base station 30.
Here, the mobile terminal or the RFID tag 30, the radio base station 10, or both of these antennas are directional antennas having a wide directional beam width of 90 ° or more, or circularly polarized directional antennas. Or a spiral antenna or a conical spiral antenna having a wide directional beam width of 120 ° or more, and the directivity direction between the mobile terminal and the radio base station is directed toward the other party of the bidirectional communication. It is assumed that they are provided facing each other.

  From the mobile terminal or the RFID tag 30, a radio signal including at least a system synchronization signal, an identification signal, and a positioning signal is intermittently transmitted as a burst signal with a time occupation rate of 20% or less, and the radio signal is received. The radio base station 10 reproduces the positioning signal while periodically switching the plurality of directional antennas 15a-1 to 15a-4, and determines the phase difference of the reproduced positioning signals as the plurality of directional antennas 15a-. 1 to 15a-4 are measured, the direction in which the mobile terminal or RFID tag 30 is located is measured, the received signal strength (RSSI) of the radio signal is measured, and the distance from the radio base station is measured. Then, the two-dimensional or three-dimensional position of the mobile terminal or RFID tag 30 is measured with high accuracy and in real time from the measurement result of the direction and distance. It is possible.

  Alternatively, the plurality of directional antennas 15a-1 to 15a-1 are transmitted from the base station 10 as radio signals including at least a system synchronization signal, an identification signal, and a positioning signal as burst signals having a time occupancy rate of 20% or less. 15a-4 is intermittently transmitted while periodically switching, and the mobile terminal or RFID tag 30 receives the radio signal, and outputs a positioning signal corresponding to the plurality of directional antennas 15a-1 to 15a-4. Measure the phase difference to measure the direction in which the mobile terminal is located, measure the received electric field strength or received signal strength (RSSI) of the radio signal to measure the distance from the base 10 billion, and the direction From the distance measurement result, the mobile terminal or RFID tag can measure the two-dimensional or three-dimensional position of the own station with high accuracy and in real time.

Alternatively, by performing bidirectional communication in a time-sharing manner between the wireless base station 10 and the mobile terminal or RFID tag 3030, the wireless base station 10 can perform two-dimensional or three-dimensional communication of the mobile terminal or RFID tag 30. The position of the dimension can be measured with high accuracy and in real time, and the mobile terminal or the RFID tag 30 can determine the two-dimensional or three-dimensional position of the own station with high accuracy and in real time.
Further, by making the directional beam of the radio base station 10 and the directional antenna of the mobile terminal or RFID tag 30 or the circularly polarized directional antenna relative to each other, the influence of reflected waves or multipaths from the periphery is suppressed. Benefits that can be obtained.

The distance 201 (Dm) is measured when the directional beam of the antenna of the radio base station 10 and the directional beam of the antenna of the mobile terminal or the RFID tag 30 are opposed to each other. The intensity or the received signal intensity (RSSI) can be measured and approximated by the following “empirical formula of coupling loss between antennas facing each other at a relatively short distance”.
Coupling loss (LdB) = 22 + 20LOG (D / λ) ≈effective radiated power value from mobile terminal−effective received signal strength received at radio base station (λ = wavelength of radio signal)
Distance (Dm) ≈λ * arcLOG {(L-22) / 20}
Here, the effective radiated power value is, for example, the added value of the gain and transmission output of the directional antenna connected to the mobile terminal or RFID, and is included in the station information transmitted from the mobile terminal or RFID. Thus, it can be transmitted to the radio base station.

For example, if the frequency of the radio signal is in the 2.4 GHz band, and the distance between the antennas is 12 m and the measurement error of the received signal strength is ± 3 dB, the distance measurement error ± δDm is δD = It is determined as 12 m × (3 dB / 62 dB) ≈58 cm.
Alternatively, if the distance between the antennas is 6 m, δD≈32 cm, and if the distance between the antennas is 3 m, δD≈18 cm. As the distance becomes narrower, the measurement error improves, and reflection or The effect of being less affected by the path is obtained.

Further, when the wireless base station measures the distance 201 (Dm) and the direction 202 (α (X), α (Y)), the mobile terminal or RFID 2 is determined from the distance and direction as follows. A three-dimensional or three-dimensional position can be obtained.
When the plurality of antennas 15a-1 to 15a-4 of the radio base station 101 are directed directly downward Xx = X0−D * Sin (α (X)) −−−− (1)
Yy = Y0−D * Sin (α (Y)) −−−− (2)
Zz = Z0−D * √ (1-Sin ^ 2 (α (X)) − Sin ^ 2 (α (Y))) −−−− (3)

Here, when the radio base station 10 is always in a reception standby state, the mobile terminal or RFID is driven by a battery, and is normally in a dormant state, the mobile terminal or RFID is in the radio base station. On the other hand, by intermittently transmitting a radio signal including at least a positioning signal at a predetermined period generated by a self-excited oscillator such as a CR oscillator, consumption of the mobile terminal or RFID battery can be reduced. Even when there are mobile terminals close together, intermittent transmission collisions can be avoided.
It is also possible to measure a two-dimensional position by providing two directional antennas in the radio base station or mobile terminal and switching them periodically.

Further, when the radio base station 10 is a pseudo satellite station (sude light) and the radio signal transmitted from the pseudo satellite station is a short burst signal with a time rate of 20% or less, Therefore, it is possible to increase the power that can be transmitted to about 1 mW.
In addition, since a two-dimensional or three-dimensional position can be detected using a single pseudo satellite station, a two-dimensional or three-dimensional position can be detected by hyperbolic navigation using four conventional pseudo satellite stations. As compared with the case of performing the above, the influence of multipath can be drastically reduced.

  FIG. 3 is another configuration diagram of the wireless positioning system according to the first embodiment of the present invention. In FIG. 3, 10a is a radio base station, 20 is an access point, 21 is a communication line or Internet line, 22 is a server or central control unit, 40a is a lighting means, 61 is a digital signal blocking capacitor, and 62 is a digital signal blocking. Transformer, 63 is a digital signal coupling capacitor, 64 is a digital signal coupling transformer, 65a is a power input terminal, 66a is a power supply output terminal, 67a is a digital signal connection terminal, 68a is a power supply input terminal, 103 is a power supply facility, Reference numeral 104a denotes lighting equipment, and 105a and 105b denote transmission cables.

  AC power or DC power is supplied from the power supply facility 103 via the power input terminal 65a, and is connected to the power supply output terminal 66a via the digital signal blocking capacitor 61a and the digital signal blocking transformer 62a. The power supply input terminal 68a of the lighting equipment 104a is connected via the transmission cable 105a, and the power supply output terminal 66a of the access point 20 is connected to the digital signal connection transformer 64a and the digital signal connection capacitor 63a. The communication line 21 is connected via the connection terminal 67a.

On the other hand, power is supplied to the lighting means 40a and the radio base station 10a built in the lighting equipment 104a through the digital signal blocking capacitor 61b and the digital signal blocking transformer 62b, and the radio base station 10a is supplied with power. A digital signal is connected via a digital signal connection transformer 64b and a digital signal connection capacitor 63b.
In addition, as the leakage suppression means for suppressing the leakage of the digital signal as an electromagnetic wave signal, a twisted pair cable is used as the transmission cable 105a, and the digital signal blocking transformers 62a and 62b and the digital signal blocking block are used. Capacitors 61a and 61b are provided.

FIG. 4 is a cross-sectional view of the transmission cable of the present invention. In FIG. 4, 68a1 and 68a2 are twisted pair cable cores, and 105a is a twisted pair cable.
The conventional digital signal transmission cable has a small current capacity and is not suitable for supplying power to the conventional lighting device. However, the necessary current capacity is reduced by adopting the LED as the light emitting element. A twisted pair cable with current capacity can be commercialized.
In addition, by using a twisted pair cable as an indoor wiring cable for supplying power to the lighting device, it is possible to suppress leakage of an electromagnetic wave signal when a digital signal is superimposed.

FIG. 5 is another cross-sectional view of the transmission cable of the present invention. In FIG. 5, 68a1, 68a2, 68a3, 68a4 are twisted pair cable cores, 105a is a twisted pair cable, and the two pairs of twisted pair cables are integrated to separate digital signal transmission in the upstream and downstream directions. It becomes possible to do.
Further, for example, since only a potential difference due to a digital signal is generated between the core wires 68a1 and 68a2 of the twisted pair cable, there is an advantage that an insulation measure between the twisted pair cables becomes easy.
The same effect can be obtained by using two sets of coaxial cables instead of the twisted pair cables.

FIG. 6 is an external view of the illumination means of the present invention. In FIG. 6, 41 is a printed circuit board for assembling an LED for illumination and a directional antenna for positioning, 42 is a radome that allows light and radio signals to pass, and 43 is light, radio signals, or both. For passing, diffusing, converging, scattering, or a combination thereof, 44 is a radio base station and attached circuit unit, 45 is a housing, 46 is a base, and 47 is a contact.
As shown in FIG. 7, a plurality of LEDs 51 a to 51 n and directional antennas 51 a to 51 m are assembled on the lower surface of the assembly substrate 41 at a predetermined interval. A radio base station, a branching unit, a control circuit unit, and the like are assembled directly or as a unit.

The radome 42 allows the illumination light and the radio signal to pass downward, but depending on the material or shape of the lens 43, only the illumination light is diffused, converged, scattered, or a combination thereof. On the other hand, the housing 45 plays a role such as giving mechanical strength, heat dissipation effect, wireless signal leakage prevention effect, and attachment strength of the base.
It should be noted that the amount of gas remaining in the interior is reduced as much as possible and filled with an inert gas such as nitrogen gas, so that a sealed structure is obtained, and thus a long life can be realized.
In addition, since four directional antennas usually need to be arranged at intervals of about a quarter wavelength to a half wavelength of the positioning signal, the frequency of the positioning signal is 5. It is desirable to set it to 6 GHz or more.

  In the above description, the case where radio waves are used as radio signals has been described. However, ultrasonic signals, high-frequency signals, or optical signals can be included as radio signals. In the case of an ultrasonic signal or an optical signal, a transducer is used instead of an antenna. In the case of an optical signal, a subcarrier signal having a frequency higher than a predetermined value or a spreading code having a high chip rate is used. Shall be used.

When the radio base station is a pseudo-satellite station and transmits a pseudo-GPS signal, the unmodulated carrier wave signal is reproduced by a Costas loop or the like, thereby measuring the direction and distance and detecting the position of the GPS mobile terminal. can do.
In addition, the MAC layer includes at least the identification code or identification number of the transmission means, includes station information, includes text information, or selects a code length within a range not exceeding 1% of the time rate. can do.

Since the present invention is configured as described above, a plurality of radio base stations are discretely installed in a wide area, and a mobile terminal or RFID is installed on a mobile body or carried by a person so that the mobile side is fixed. The two-dimensional or three-dimensional wireless positioning system and the wireless positioning device with a positioning error of about ± 30 cm on both sides or both sides thereof, and the positioning business using these can be realized in an economical manner.
Further, the wireless base station is installed as a pseudo satellite station indoors, outdoors, or both, and the mobile terminal is a GPS mobile terminal, so that GPS can be seamlessly connected outdoors and indoors. -Dimensional wireless positioning system can be realized in an inexpensive way.

In addition, when the wireless positioning system and the positioning device of the present invention are applied to logistics management, it is possible to accurately record what level of which shelf in which location the article management in the warehouse is stored. It can be useful for
When the wireless base station is discretely arranged regardless of outdoors or indoors, and the mobile terminal is carried by a pedestrian or a robot, a pedestrian autonomous movement support system, a pedestrian navigation system, or In addition to being used for child watching systems, it can also be applied to autonomous walking of robots.
In addition, the high-precision positioning technology of the present invention is a basic technology and can be expected to be used in many other fields.

10a, 10b Wireless base station 20 Communication line 21 Access point 22 Server 30 Mobile terminal or RFID tag 103 Power distribution equipment 104a, 104b Lighting equipment 105a, 105b Transmission cable 501 Ceiling 502 Floor surface

Claims (12)

In a wireless positioning system that is installed in the vicinity of lighting equipment and uses a wireless signal to measure a two-dimensional or three-dimensional position.
The wireless positioning system includes a transmission cable for supplying power to the lighting equipment, a wireless base station that receives power supply via the transmission cable, and a digital signal superimposed on or separated from the transmission cable. A mobile terminal, an RFID tag, or both of which is a target for measuring a position by measuring a direction and a distance,
The transmission cable has leakage suppression means for suppressing at least leakage of the transmitted digital signal as an electromagnetic wave signal to the outside, and the wireless base station receives at least the wireless signal. A receiving means; a control means for controlling the receiving means; a plurality of directional antennas installed at intervals of one wavelength or less of the radio signal; and an antenna for periodically switching the plurality of directional antennas Switching means, and the mobile terminal, the RFID tag, or both of them are transmitting means for intermittently transmitting a radio signal, control means for controlling the transmitting means, and any number of directivity A wireless positioning system and a wireless positioning device, characterized by comprising a directional antenna.
The radio base station has at least a transmission means for intermittently transmitting the radio signal, a control means for controlling the transmission means, and a plurality of directivities installed at intervals of one wavelength or less of the radio signal An antenna and an antenna switching means for periodically switching the plurality of directional antennas, and the mobile terminal, the RFID tag, or both of them receive a radio signal; and The radio positioning system and radio positioning apparatus according to claim 1, further comprising: a control unit for controlling the receiving unit; and an arbitrary number of directional antennas.
The radio base station, at least, transmitting / receiving means for intermittently transmitting or receiving the radio signal in time division, control means for controlling the transmitting / receiving means, and an interval of one wavelength or less of the radio signal A plurality of directional antennas, and antenna switching means for switching the plurality of directional antennas periodically or in a time division manner, and the mobile terminal receives radio signals in a time division manner 2. The radio positioning according to claim 1, further comprising: a transmitting / receiving unit for intermittent transmission; a control unit for controlling the transmitting / receiving unit; and an arbitrary number of directional antennas. System and wireless positioning device.
The radio base station is installed in the lower part of the ceiling, in the lighting equipment, in the periphery of the lighting equipment, or in a combination thereof, and the directional beam of the directional antenna of the radio base station is installed in the downward direction. A wireless positioning system and a wireless positioning device corresponding to any one of claims 1 to 3, further comprising installation means for performing the operation.
The radio positioning according to any one of claims 1 to 3, wherein the radio base station has an integral structure with the illumination device or an integral structure with illumination means of the illumination device. System and wireless positioning device.
The illumination means is illumination by an LED, and has a structure that is attached to an illumination device by a screw-type base. The wireless base station is incorporated in the illumination means, and the LED of the illumination means and the wireless base station 6. The wireless positioning system and the wireless positioning device according to claim 5, wherein the directional antenna is assembled on a common printed circuit board, or a combination thereof.
The lower part of the illumination means has a radome means for allowing both light and radio signals to pass therethrough, the upper part of the illumination means has shielding means for shielding at least the radio signals, or both of them The wireless positioning system and the wireless positioning device according to claim 5 or 6, characterized by the above-mentioned.
When the wireless base station measures the position of the mobile terminal, the RFID tag, or both, the wireless base station has a control unit for starting or stopping the lighting device according to the positioning result. A radio positioning system and a radio positioning device corresponding to any one of claims 1 to 3.
A plurality of the radio base stations, the plurality of radio base stations are connected to a central control device via the transmission cable, and the central control device has at least a function of connecting to an Internet line; and the plurality of radio base stations 4. The method according to claim 1, further comprising a function of controlling a station and a function of receiving and managing position information from the mobile terminal, the RFID tag, or both of them. Applicable wireless positioning system and wireless positioning device.
When the central control apparatus or server receives a positioning request signal from the mobile terminal via the plurality of radio base stations, the central control apparatus or server selects an optimum radio base station from the plurality of radio base stations, and selects the selected radio The base station has a function of responding to a positioning request signal transmitted from the mobile terminal and instructing the base station to transmit a positioning signal at a time division timing. A wireless positioning system and a wireless positioning device corresponding to any of them.
The wireless positioning system is connected to an Internet line or a communication line, and provides a positioning service to a mobile terminal having an identification signal registered in the wireless positioning system, an RFID tag, or both. A wireless positioning system and a wireless positioning device corresponding to any one of items 1 to 7.
  The transmission cable is two pairs of twisted pair cables or two sets of coaxial cables, and the two sets are assigned at least in the upstream direction and the downstream direction of the digital signal. A wireless positioning system and a wireless positioning device corresponding to any one of up to item 7.

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