CN110501677B - Wide-area compensation millimeter wave radar sensor and use method thereof - Google Patents
Wide-area compensation millimeter wave radar sensor and use method thereof Download PDFInfo
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- CN110501677B CN110501677B CN201910844283.0A CN201910844283A CN110501677B CN 110501677 B CN110501677 B CN 110501677B CN 201910844283 A CN201910844283 A CN 201910844283A CN 110501677 B CN110501677 B CN 110501677B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/66—Radar-tracking systems; Analogous systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
- H01Q3/20—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The embodiment of the invention discloses a wide-area compensation millimeter wave radar sensor and a using method thereof, relating to the technical field of radar signal processing, wherein the millimeter wave radar sensor comprises: wide area compensation receiving and dispatching antenna, reflecting plate and radar control mainboard, radar control mainboard are installed in the sensor base, are provided with rotating assembly on the sensor base, the last runing rest that is provided with of rotating assembly, reflecting plate and receiving and dispatching antenna install on the runing rest, and wide area compensation receiving and dispatching antenna includes focusing type fresnel antenna and divergent fresnel antenna. The embodiment of the invention can enlarge the scanning range of the radar, can realize the long-distance detection of the target and reduce the dead zone of the radar, and has wide application prospect.
Description
Technical Field
The embodiment of the invention relates to the technical field of radar signal processing, in particular to a wide-area compensation millimeter wave radar sensor and a using method thereof.
Background
The millimeter wave is essentially electromagnetic wave, the frequency is 30-300GHz, and the wavelength is 1-10 mm. The millimeter wave radar is a radar with a working frequency band in a millimeter wave frequency band, and the distance measurement principle is the same as that of a common radar, namely, radar waves are sent out, then echoes are received, and the position data of a target is measured according to the time difference between receiving and sending. The millimeter wave radar is that the frequency of the radio wave is the millimeter wave frequency band.
Most of the existing commonly used millimeter detection radars are in a directional detection mode, because the transmitting power of the radar is clearly standardized but not infinitely amplified in the safe radiation range of a human body, in order to enable the detection radar to cover a wider range, the radar is generally realized by increasing the beam angle of a radar wave, and the detection distance of the radar becomes very close due to the reason. If the radar is to be detected at a long distance, the radar beam velocity angle must be reduced, but for this reason the radar blind area is large, i.e. the area below the radar that is not detectable is larger. In addition, the size of the wave velocity angle of the radar wave determines the detection resolution capability of the radar on an uncertain target, for example, if the wave velocity angle of the radar wave is 1 degree, the diameter of the cross section of the radar wave is about 1.74 kilometers beyond 100 kilometers. If there are several aircraft flying at 100 km thereof in a dense formation. It can only be seen as one target. If the radar needs to detect a target remotely and solve the problem of a blind area, a common method is to adopt a radar array mode to complement each other for judgment, but the method can greatly increase the overall cost of the radar, and can lead the physical structure, the arrangement of an antenna and the processing of signals of the radar to be very complex, so that radio waves of all units of the radar can interfere with each other, and the unreliability of the radar in the target tracking process is increased.
Disclosure of Invention
Therefore, the embodiment of the invention provides a wide-area compensation millimeter wave radar sensor and a using method thereof, and aims to solve the problem that the area of a blind area is too large in the radar wave transmission process in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of embodiments of the present invention, there is provided a wide-area compensated millimeter wave radar sensor,
the radar sensor includes: wide area compensation receiving and dispatching antenna, reflecting plate and radar control mainboard, radar control mainboard is installed in the sensor base, be provided with rotating assembly on the sensor base, the rotating assembly top is provided with the runing rest, the runing rest has an inclined plane and a perpendicular, the reflecting plate is installed on the inclined plane of runing rest, wide area compensation receiving and dispatching antenna installs on the perpendicular of runing rest, wide area compensation receiving and dispatching antenna includes focus formula fresnel antenna, one side of focus formula fresnel antenna comprises the parallel plane that sets up on upper portion and the first sawtooth surface that has the abrupt arris that sets up in the lower part, focus formula fresnel antenna's opposite side is including setting up the protruding sphere in the middle and setting up at second sawtooth surface all around, second sawtooth surface comprises a plurality of ring abrupt arris.
Furthermore, the wide area compensation transceiving antenna further comprises a divergent fresnel antenna, one side of the divergent fresnel antenna is composed of a plurality of radially superposed circular rings, the diameter of each circular ring is gradually increased from outside to inside, and the other side of the divergent fresnel antenna is composed of a concave surface arranged at the upper part and a third sawtooth surface with a convex edge arranged at the lower part.
Furthermore, the sawtooth opening of the first sawtooth surface diverges towards the outer edge of the focusing Fresnel antenna, and the sawtooth opening of the second sawtooth surface converges towards the center of the focusing Fresnel antenna.
Further, the sawtooth openings of the third sawtooth surface diverge towards the outer edge of the divergent fresnel antenna.
Furthermore, an outer support is arranged on the outer side of the rotating support, and the outer support is connected with the rotating support through an angle adjusting hole and used for adjusting the angle of the reflecting plate arranged on the rotating support.
Furthermore, integrated radar central processing unit, signal emission unit and signal receiving unit in the radar control mainboard, signal emission unit is used for launching radar signal wave, signal receiving unit is used for receiving the radar reflection signal wave of target object reflection, radar central processing unit is used for right radar reflection signal wave handles.
Further, the rotating assembly comprises a rotating motor, a driving wheel, a driven wheel and a transmission belt, wherein an output shaft of the rotating motor is connected to the driving wheel, and the driving wheel is connected to the driven wheel through the transmission belt.
Further, wide area compensation millimeter wave radar sensor still includes the shell, the shell lid closes the top of sensor base, shell and sensor base form airtight space, and are provided with the sealing washer between shell and the sensor base.
According to a second aspect of embodiments of the present invention, there is provided a method of using a wide-area compensated millimeter wave radar sensor,
the method comprises the following steps: utilize the 360 degrees rotation scanning of rotating assembly drive wide area compensation receiving and dispatching antenna, wherein, after the radar signal ripples are sent by the signal emission unit, reflect wide area compensation receiving and dispatching antenna through the reflecting plate, the radar signal ripples is launched to the target object by wide area compensation receiving and dispatching antenna again, and the radar signal ripples forms radar reflection signal after being received by the target object and returns wide area compensation receiving and dispatching antenna, radar reflection signal transmits to the signal receiving unit through the reflecting plate again.
Furthermore, the radar signal waves are gathered when passing through the focusing Fresnel antenna, and the radar signal waves are emitted in a parallel or divergent mode when passing through the divergent Fresnel antenna, so that the emission area and the distance of the radar signals are increased.
The embodiment of the invention has the following advantages:
according to the embodiment of the invention, the radar transmitting and receiving antenna is modified by utilizing the principle of the Fresnel lens, and the focusing Fresnel antenna and the diverging Fresnel antenna are adopted, so that the scanning range of the radar can be enlarged, a long-distance target detection can be realized, the radar blind area can be reduced, and the application prospect is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic cross-sectional view of a focusing fresnel antenna according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a divergent fresnel antenna according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of a wide-area compensation millimeter wave radar sensor according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an overall structure of a wide area compensation transceiver antenna of a wide area compensation millimeter wave radar sensor according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an angle reading dial of a wide-area compensation millimeter wave radar sensor according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a signal wave transmission path of a wide-area compensation millimeter wave radar sensor according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a radar control motherboard of a wide-area compensation millimeter wave radar sensor according to an embodiment of the present invention;
in the figure: the device comprises a focusing Fresnel antenna 01, a parallel surface 02, a first sawtooth surface 03, a second sawtooth surface 04, a convex spherical surface 05, a divergent Fresnel antenna 06, a third sawtooth surface 07, a circular ring 08, a step part 09, a radar central processing unit 10, a concave surface 11, a rotating support 12, a shell 13, a sensor base 14, an angle reading dial 15, a driving wheel 16, a rotating motor 17, a driven wheel 18, an angle adjusting hole 19, a reflecting plate 20, a radar control main board 21, an outer support 22, a transmission belt 23, a laser encoder 24, a sealing ring 25, an encoder fixing circular ring disc 26, a signal receiving unit 27 and a signal transmitting unit 28.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 3, an embodiment of the present invention provides a wide-area compensation millimeter wave radar sensor, which mainly includes: wide area compensation receiving and dispatching antenna, reflecting plate 20 and radar control mainboard, radar control mainboard is installed in sensor base 14, be provided with rotating assembly on the sensor base 14, the rotating assembly top is provided with runing rest 12, runing rest 12 has an inclined plane and a perpendicular, reflecting plate 20 is installed on the inclined plane of runing rest 12, a radar signal wave for radar signal emission and the receiving element transmission on the reflection radar control mainboard 21, and the radar reflected signal of target object reflection. The receiving and dispatching antenna is installed on the vertical plane of the rotating bracket 12, the wide area compensation millimeter wave radar sensor further comprises a shell 13, the shell 13 covers the upper portion of the sensor base 14, the shell 13 and the sensor base 14 form a closed space, a sealing ring 25 is arranged between the shell 13 and the sensor base 14, and therefore the sensor can be enabled to have a relatively closed space so as to avoid interference of the environment.
In order to ensure that the azimuth beam width of the wide-area compensation transceiving antenna is within 2 degrees, the antenna aperture is defined as D being 150 mm. The focal length is defined as f 220 mm. Spherical waves generated by the feed source are focused into plane waves. The wide-area compensation transceiving antenna adopts a polytetrafluoroethylene material with a dielectric constant of 2.2. The pitching direction is used for shaping the lens antenna to realize cosecant square wave beams to expand the width of the pitching direction wave beams, and can ensure that echo signals of the same target on different distances are constant, and the required radiation angle of the feed source is as follows: and theta is 19 degrees, a microstrip antenna weighting array with the size of 6 multiplied by 6 is adopted, different weighting modes are adopted for the azimuth pitching, and the 10dB beam widths are all 38 degrees. Thus, the signals illuminating the lens in all directions are equal. To ensure that the rotation of the wide area compensation transceiver antenna does not affect the composite pattern.
Specifically, referring to fig. 1, the wide area compensation transceiving antenna includes a focusing fresnel antenna 01, one side of the focusing fresnel antenna 01 is composed of a parallel surface 02 disposed at the upper portion and a first serrated surface 03 having protruding ridges disposed at the lower portion, the other side of the focusing fresnel antenna 01 is composed of a convex spherical surface 05 disposed at the middle and second serrated surfaces 04 disposed at the periphery, and the second serrated surface 04 is composed of a plurality of circular protruding ridges. The sawtooth openings of the first sawtooth surfaces 03 diverge toward the outer edge of the focusing fresnel antenna 01, and the sawtooth openings of the second sawtooth surfaces 04 converge toward the center of the focusing fresnel antenna 01. When a signal wave is incident from the parallel surface 02 and the first sawtooth surface 03, because the sawtooth opening of the first sawtooth surface 03 is dispersed to the outer edge of the focusing type Fresnel antenna 01, the signal wave incident into the focusing type Fresnel antenna 01 gathers to the center, and then passes through the focusing action of the convex spherical surface 05 and the second sawtooth surface 04, so that the radar signal wave passing through the focusing type Fresnel antenna 01 gathers at the central focus. And conversely, the transmitting wave of the central focus, namely the feed source, can be transmitted to each position of the scanning area along the opposite direction of the path, so that the radar blind area in the prior art is reduced.
Specifically, referring to fig. 2, the wide area compensation transceiver antenna further includes a divergent fresnel antenna 06, one side of the divergent fresnel antenna 06 is composed of a plurality of radially stacked circular rings 08, and the diameter of the circular rings 08 gradually increases from outside to inside, so that a step 09 is formed at the edge, and signal waves can be received better. The other side of the divergent fresnel antenna 06 is formed by an upper concave surface 11 and a lower convex third sawtooth surface 07. Note that the sawtooth openings of the third sawtooth surface 07 diverge toward the outer edge of the divergent fresnel antenna 06. When a parallel signal wave is incident from one side with a plurality of radially superposed circular rings, the layers formed among the radially superposed circular rings are mutually parallel, so the parallel signal wave is still transmitted to the other side of the divergent fresnel antenna 06 and has convergence after being emitted through the concave surface 11, and the signal wave emitted through the third sawtooth surface 07 is divergent because the sawtooth opening of the third sawtooth surface 07 is divergent to the outer edge of the divergent fresnel antenna 06, so the coverage range of radar signals can be expanded, and the compensation effect is achieved.
Referring to fig. 1, an outer bracket 22 is disposed outside the rotating bracket 12, and the outer bracket 22 is connected to the rotating bracket 12 through an angle adjusting hole 19 for adjusting the angle of a reflecting plate 20 mounted on the rotating bracket 12, thereby ensuring that radar transmitting signals reflected from different angles can be received by the signal transmitting and receiving assembly.
Referring to fig. 4, the rotating bracket 12 is installed above the rotating assembly, the rotating assembly includes a rotating motor 17, a driving wheel 16, a driven wheel 18 and a transmission belt 23, an output shaft of the rotating motor 17 is connected to the driving wheel 16, the driving wheel 16 is connected to the driven wheel 18 through the transmission belt 23, the driven wheel 18 drives the rotating bracket 12 to rotate, so that 360-degree scanning of the sensor is realized, and wide-area scanning of the sensor is realized.
Referring to fig. 5, when rotating, the angle reading dial 15 and the laser encoder 24 are used for reading the rotation angle, the angle reading dial 15 is formed by uniformly arranging scales on the outer side of the upper end of the driven wheel 18, the laser encoder 24 is installed on the encoder fixing circular ring disc 26 and is opposite to the scales on the angle reading dial 15, the encoder fixing circular ring disc 26 is sleeved outside the angle reading dial 15, a motor hole is formed in the encoder fixing circular ring disc 26, and the rotating motor 17 is accommodated in the motor hole.
The radar sensor hardware requirements are specified below: it is of compact and light design and is manufactured in one piece in order to increase its robustness. The detection range is far, and the coverage range of the road can reach more than 1000 meters. Object resolution and positioning accuracy: less than or equal to 25 cm; the working frequency is as follows: 77 GHz; wave velocity azimuth angle: 2 degrees; beam elevation angle: 2 degrees, important mark information such as real-time position, direction, vehicle speed, vehicle type, ID number, longitude and latitude and the like of each detected object including pedestrians, vehicles and the like is required to be provided. A radar blind area is 5 meters; object detection frequency per second: 800 times; visual field: rotating and scanning the 360-degree radar; rotating speed: 8 rps; interface: 100Mb Ethernet; target tracking number: 1000 in number; working voltage: a POE power supply mode, wherein the power consumption is less than or equal to 15W; MTBF: 80000 hours (greater than 8 years); protection grade: IP 67; working temperature: -30 ℃ to +60 ℃.
Referring to fig. 6 and 7, a radar central processing unit 10, a signal transmitting unit 28 and a signal receiving unit 27 are integrated in the radar control main board 21, the signal transmitting unit 28 is used for transmitting radar signal waves, the signal receiving unit 27 is used for receiving radar reflection signal waves reflected by a target object, and the radar central processing unit 10 is used for processing the radar reflection signal waves. The radar central processing unit 10 is further configured to perform data interaction externally through a radar CAN bus interface, and perform data interaction with a local linkage device connected through a wire through the radar RJ45 interface, where the local linkage device includes an information board prompting system and a road condition broadcasting system.
Referring to fig. 6, a method of using a wide-area compensated millimeter wave radar sensor, comprising: utilize rotating assembly drive wide area compensation receiving and dispatching antenna 360 degrees rotation scanning, wherein, after the radar signal ripples is sent by signal emission unit 28, reflect wide area compensation receiving and dispatching antenna through reflecting plate 20, the radar signal ripples is launched to the target object by wide area compensation receiving and dispatching antenna again, and the radar signal ripples forms radar reflection signal after being received by the target object and returns wide area compensation receiving and dispatching antenna, radar reflection signal again transmits to signal reception unit 27 through reflecting plate 20, and signal reception unit 27 handles signal transmission to radar central processing unit 10.
The radar signal waves are gathered when passing through the focusing Fresnel antenna 01, and are emitted in a parallel or divergent mode when passing through the divergent Fresnel antenna 06, so that the emission area and the distance of the radar signals are increased. The principle of this part has been described in detail above, and will not be described in detail herein.
According to the embodiment of the invention, the radar transmitting and receiving antenna is modified by utilizing the principle of the Fresnel lens, and the focusing Fresnel antenna 01 and the diverging Fresnel antenna 06 are adopted, so that the scanning range of the radar can be enlarged, a target can be detected remotely, the dead zone of the radar can be reduced, and the radar has wide application prospect.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. A wide-area compensated millimeter-wave radar sensor, the radar sensor comprising: the wide area compensation transmitting-receiving antenna comprises a focusing Fresnel antenna, one side of the focusing Fresnel antenna comprises a parallel surface arranged at the upper part and a first sawtooth surface with convex edges arranged at the lower part, the other side of the focusing Fresnel antenna comprises a convex spherical surface arranged in the middle and second sawtooth surfaces arranged at the periphery, and the second sawtooth surfaces comprise a plurality of circular convex edges;
the wide area compensation transceiving antenna also comprises a divergent Fresnel antenna, one side of the divergent Fresnel antenna is composed of a plurality of radially superposed circular rings, the diameters of the circular rings are gradually increased from outside to inside, and the other side of the divergent Fresnel antenna is composed of a concave surface arranged at the upper part and a third sawtooth surface with a convex edge arranged at the lower part;
the sawtooth openings of the first sawtooth surfaces are diverged towards the outer edge of the focusing Fresnel antenna, and the sawtooth openings of the second sawtooth surfaces are gathered towards the center of the focusing Fresnel antenna; the sawtooth openings of the third sawtooth surface diverge towards the outer edge of the divergent fresnel antenna.
2. The wide area compensation millimeter wave radar sensor as claimed in claim 1, wherein an outer bracket is disposed outside said rotating bracket, and said outer bracket is connected to said rotating bracket through an angle adjusting hole for adjusting an angle of a reflecting plate mounted on said rotating bracket.
3. The wide-area compensation millimeter wave radar sensor as claimed in claim 1, wherein a radar central processing unit, a signal transmitting unit and a signal receiving unit are integrated in said radar control board, said signal transmitting unit is used for transmitting radar signal waves, said signal receiving unit is used for receiving radar reflection signal waves reflected by a target object, and said radar central processing unit is used for processing said radar reflection signal waves.
4. The wide-area compensated millimeter-wave radar sensor of claim 1, wherein the rotating assembly comprises a rotating motor, a driving wheel, a driven wheel, and a transmission belt, wherein an output shaft of the rotating motor is connected to the driving wheel, and the driving wheel is connected to the driven wheel through the transmission belt.
5. The wide-area compensation millimeter wave radar sensor of claim 1, further comprising a housing, wherein the housing covers the sensor base, the housing and the sensor base form a closed space, and a seal ring is disposed between the housing and the sensor base.
6. A method of using a wide-area compensated millimeter wave radar sensor employing the wide-area compensated millimeter wave radar sensor of any of claims 1 to 5, the method comprising: utilize the 360 degrees rotation scanning of rotating assembly drive wide area compensation receiving and dispatching antenna, wherein, after the radar signal ripples are sent by the signal emission unit, reflect wide area compensation receiving and dispatching antenna through the reflecting plate, the radar signal ripples is launched to the target object by wide area compensation receiving and dispatching antenna again, and the radar signal ripples forms radar reflection signal after being received by the target object and returns wide area compensation receiving and dispatching antenna, radar reflection signal transmits to the signal receiving unit through the reflecting plate again.
7. The use method of the wide-area compensation millimeter wave radar sensor as claimed in claim 6, wherein the radar signal waves are gathered when passing through the focusing fresnel antenna, and the radar signal waves are emitted in parallel or divergently when passing through the diverging fresnel antenna, so as to increase the emitting area and distance of the radar signals.
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| CN111478047A (en) * | 2020-03-27 | 2020-07-31 | 陕西长岭电子科技有限责任公司 | Azimuth-single-arm pitching type rotary table for ship-borne precision tracking radar |
| CN111608645B (en) * | 2020-05-28 | 2021-10-08 | 中国矿业大学(北京) | A borehole directional ground penetrating radar device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323583A (en) * | 2011-09-13 | 2012-01-18 | 电子科技大学 | Super-resolution linear array three-dimensional synthetic aperture radar imaging method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675349A (en) * | 1996-02-12 | 1997-10-07 | Boeing North American, Inc. | Durable, lightweight, radar lens antenna |
| JP3750887B2 (en) * | 1997-07-04 | 2006-03-01 | 大日本印刷株式会社 | antenna |
| CN103278809A (en) * | 2013-05-23 | 2013-09-04 | 中国科学院上海光学精密机械研究所 | Orthoptic synthesis aperture laser imaging radar single-prism rotary transmitting device |
| KR102100931B1 (en) * | 2014-01-03 | 2020-04-14 | 삼성전자주식회사 | Photoconductive antenna |
| CN204536538U (en) * | 2015-01-06 | 2015-08-05 | 宁波能亮光电科技有限公司 | A kind of microwave radar inductor |
| CN108627827B (en) * | 2018-03-22 | 2021-05-04 | 苏州速感智能科技有限公司 | Device and detection method for realizing millimeter-wave radar wide-area long-distance target detection |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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