CN214954054U - Millimeter wave radar performance evaluation device - Google Patents
Millimeter wave radar performance evaluation device Download PDFInfo
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- CN214954054U CN214954054U CN202120162813.6U CN202120162813U CN214954054U CN 214954054 U CN214954054 U CN 214954054U CN 202120162813 U CN202120162813 U CN 202120162813U CN 214954054 U CN214954054 U CN 214954054U
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Abstract
The utility model discloses a millimeter wave radar performance evaluation device, including mobile rail, the fixed subassembly of radar and electromagnetic wave reflection of waves subassembly, wherein be provided with the removal subassembly on the mobile rail, the removal subassembly sets up on longitudinal movement guide rail and/or lateral shifting guide rail, and the removal subassembly moves along the predetermined direction on mobile rail. The utility model discloses a but moving guide, radar fixed subassembly and electromagnetic wave reflection of waves subassembly are quick convenient arrange radar, track and detection target, install the slip dish on the moving guide for electromagnetic wave reflection of waves subassembly is in moving guide department along the predetermined direction removal, thereby convenient and fast ground adjusts the distance of target object and realizes radar receiving and dispatching electromagnetic wave signal and survey its angle of vision, still can carry out signal strength, SNR, angle measurement precision and phase noise to the radar and assess. The utility model discloses simple structure can arrange the radar fast to adjust the position of surveying the target, improve aassessment efficiency.
Description
Technical Field
The utility model relates to a radar detection technical field especially indicates a millimeter wave radar performance evaluation device.
Background
At present, the sensors commonly used in environmental perception include various sensors such as a camera, a millimeter wave radar, a laser radar and the like. Among them, millimeter wave radar is a more widely used depth sensor in unmanned vehicles.
The mechanical structure of the existing millimeter wave radar performance evaluation system is generally arranged in a box body filled with wave-absorbing materials, and a horn antenna is adopted as a simulation target. The electromagnetic wave absorbing material with the corresponding frequency band is arranged on each reflecting surface in the box body and can absorb electromagnetic wave signals with the corresponding frequency band, the length of the absorbing material is related to the electromagnetic frequency to be absorbed, the lower the electromagnetic frequency to be absorbed, the longer the length of the absorbing material is, the length of the absorbing material is generally not less than 0.25 time of the wavelength of the lowest absorption frequency signal, therefore, the lower the frequency of the working signal is, the longer the length of the absorbing material is.
At first this kind of structure is generally in narrow and small space, inconvenient timing, observes and overhauls, and the transport is got up and need be done the transport to whole box, and is wasted time and energy. Secondly, the arrangement and installation of the existing mechanical system have high requirements on the skills of workers and can be completed by professional personnel. And thirdly, mechanical parts and horn antennas adopted by the system are expensive, so that the research and development cost is not reduced. In addition, the relatively large evaluation system occupies a large area, which is not favorable for quick deployment and convenient operation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, provides a millimeter wave radar performance evaluation device, and it is inconvenient to have solved the deployment, operates difficult problem during the test, has improved the efficiency of millimeter wave radar performance evaluation.
The technical scheme of the utility model is realized like this:
the utility model provides a millimeter wave radar performance evaluation device, include:
a moving guide including a longitudinal moving guide and a lateral moving guide; the transverse moving guide rail is arranged on the side surface of the longitudinal moving guide rail;
the radar fixing component is arranged at one end of the longitudinal moving guide rail;
the electromagnetic wave reflection assembly is slidably arranged on the movable guide rail and is opposite to the radar fixing assembly, and the electromagnetic wave reflection assembly is used for receiving signals sent by the radar fixing assembly;
the moving guide rail further comprises a moving assembly, the electromagnetic wave reflection assembly is arranged on the moving assembly, the moving assembly is arranged on the longitudinal moving guide rail and/or the transverse moving guide rail, and the moving assembly moves on the moving guide rail along a preset direction.
Furthermore, the radar fixing assembly comprises a lifting track, a supporting platform and a radar bracket, wherein one end of the lifting track is mounted at one end of the longitudinal moving guide rail through a fixing piece; the supporting platform is arranged at the other end of the lifting track and can move along the length direction of the lifting track; the radar support is arranged on the supporting platform and moves along with the supporting platform.
Further, the radar support includes the radar installed part and sets up a plurality of through-holes on the radar installed part, the radar installed part set up in supporting platform is last.
Further, the supporting platform further comprises a driving piece used for driving the radar support to rotate, and the driving piece is arranged on the supporting platform and connected with the radar installation piece.
Further, the electromagnetic wave reflection assembly comprises a corner reflector, a corner reflector bracket, a lifting rod and a base; the lifting rod is installed on the base, and the corner reflector is installed at the top end of the lifting rod through the corner reflector bracket.
Furthermore, the corner reflector comprises a first reflecting plate, a second reflecting plate and a third reflecting plate, wherein the side edges of the first reflecting plate, the second reflecting plate and the third reflecting plate are sequentially connected to form a tetrahedron with an opening at the bottom, and the opening faces the radar fixing component.
Furthermore, the moving assembly further comprises a moving disc and a guide wheel, and the guide wheel is arranged at the bottom of the moving disc.
Further, the moving assembly further comprises a sliding member for assisting the moving assembly to slide in the moving guide rail, and the sliding member is mounted on the side surface of the moving disk.
Furthermore, still include positioning mechanism on the removal guide rail, positioning mechanism set up in between radar fixed component and the electromagnetic wave reflection component.
Further, the lateral surface of the longitudinal moving guide rail is also provided with a mounting groove, and the transverse moving guide rail is mounted on the longitudinal moving guide rail through the mounting groove.
Adopt above-mentioned technical scheme, the utility model provides a pair of all kinds of millimeter wave radar performance evaluation device, its beneficial effect lies in: the radar, the track and the detection target can be quickly and conveniently arranged through the movable guide rail, the radar fixing component and the electromagnetic wave reflection component, and the sliding component is installed on the movable guide rail, so that the electromagnetic wave reflection component moves along the preset direction at the position of the movable guide rail, and the distance of a target object is conveniently and quickly adjusted to realize the purpose that the radar receives and transmits electromagnetic wave signals and detect the field angle; the radar may also be evaluated for signal strength, signal-to-noise ratio, angular measurement accuracy, and phase noise.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a perspective view of the radar fixing assembly shown in FIG. 1;
FIG. 3 is a schematic perspective view of the electromagnetic wave reflecting assembly shown in FIG. 1;
fig. 4 is a schematic perspective view of the moving assembly shown in fig. 1.
In the figure, 10-moving guide rail, 11-longitudinal moving guide rail, 111-mounting groove, 12-transverse moving guide rail, 13-moving component, 130-moving disk, 131-guide wheel, 132-sliding component, 14-positioning mechanism, 20-radar fixing component, 21-lifting track, 22-supporting platform, 23-radar bracket, 231-radar mounting component, 232-through hole, 24-fixing component, 30-electromagnetic wave reflection component, 31-corner reflector, 311-first reflection plate, 312-second reflection plate, 313-third reflection plate, 32-corner reflector bracket, 33-lifting rod and 34-base.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic perspective view of an embodiment of the present invention; as shown in fig. 1, the present invention provides an embodiment, a millimeter wave radar performance evaluation device, including moving guide 10, radar fixing component 20 and electromagnetic wave reflection component 30, moving guide 10 includes longitudinal movement guide 11 and lateral movement guide 12, and lateral movement guide 12 is disposed on the side of longitudinal movement guide 11. The movable guide rail 10 is a rail section bar, the form splicing is free, and the section bar is connected with the section bar through a connecting piece.
In this embodiment, the lateral moving rail 12 is disposed on both sides of one end of the longitudinal moving rail 11 away from the radar fixing unit 20, and is approximately "T" shaped. In other embodiments, the lateral moving rail 12 may be disposed on both sides of the longitudinal moving rail 11 at any position. In other embodiments, more than one set of the traverse guide rails 12 may be provided according to actual use conditions, and here, two sets are taken as an example, one set is provided at two sides of one end of the traverse guide rail 12 far away from the radar fixing component 20, and the other set is provided at two sides of the middle part of the traverse guide rail 12, so as to form an approximately "earth" shaped rail, thereby realizing multi-position and multi-target testing.
The radar fixing member 20 is installed at one end of the longitudinal moving guide rail 11, and is used for transmitting an electromagnetic wave signal in a millimeter wave band.
The electromagnetic wave reflection assembly 30 is slidably mounted on the movable guide rail 10, the radar fixing assembly 20 and the electromagnetic wave reflection assembly 30 are oppositely arranged, and the electromagnetic wave reflection assembly 30 is used for receiving electromagnetic wave signals in a millimeter wave frequency band. That is, the electromagnetic wave reflecting means 30 can move on the longitudinal movement guide 11 and also on the lateral movement guide 12. The moving guide 10 further includes a moving component 13, the electromagnetic wave reflecting component 30 is mounted at the moving guide 10 through the moving component 13, the moving component 13 is disposed at the longitudinal moving guide 11 and/or the transverse moving guide 12, the moving component 13 moves along a predetermined direction on the moving guide 10, for further description, the longitudinal moving guide 11 is defined to move longitudinally, and the transverse moving guide 12 is defined to move transversely. In the actual use process, the movable guide rail 10 can be used for multi-point marking, so that the moving position of the movable assembly 13 can be conveniently marked, and test data can be recorded.
Specifically, the moving guide 10 further includes a positioning mechanism 14, and the positioning mechanism 14 is disposed between the radar fixing component 20 and the electromagnetic wave reflecting component 30. In the actual use process, the positioning mechanism 14 can be a mechanical collision lock catch, when the moving component 13 slides to the positioning mechanism 14, the moving component can be fixed at the set position after colliding with the collision lock catch, and can be separated from the lock catch after being pushed by force, so that the moving component can continuously slide; the positioning mechanism 14 may also be an infrared sensor, which detects the position of the moving assembly 13 and provides a stop signal to the moving assembly 13 when the moving assembly 13 approaches the positioning mechanism 14.
Specifically, the longitudinal moving rail 11 is further provided with an installation groove 111 at a side thereof, and the lateral moving rail 12 is mounted to the longitudinal moving rail 11 by being engaged with the installation groove 111 through a coupling member. The movable guide rail 10 is a rail section, preferably an aluminum alloy section, and has light weight and free form splicing, and the section is connected with the section through a connecting piece matched with the section in shape.
Specifically, fig. 2 is a schematic perspective view of the radar fixing assembly 20 shown in fig. 1; referring to fig. 2, the radar fixing assembly 20 includes a lifting rail 21, a supporting platform 22 and a radar bracket 23, wherein one end of the lifting rail 21 is mounted at one end of the longitudinal moving rail 11 through a fixing member 24; the supporting platform 22 is installed on the lifting track 21, and the supporting platform 22 can move along the setting direction of the lifting track 21; in the present embodiment, the support platform 22 is adjusted up and down by manually fastening screws; in other embodiments, a linear module (also called a linear sliding table) can be installed on the lifting rail 21, and the principle is to drive a belt to move a slide block, and the supporting platform 22 is installed on the slide block, so that automatic lifting can be realized. The radar mount 23 is disposed on the support platform 22 and moves with the support platform 22.
Specifically, the radar bracket 23 includes a radar mount 231 and several through holes 232 provided on the radar mount 231. The radar mount 231 is provided on the support platform 22. In the in-service use process, the radar that awaits measuring passes through the screw fixation on the through-hole 232 of radar mounting part 231, installs conveniently and dismantles the replacement radar.
Specifically, in order to facilitate the angle adjustment of the radar support 23, the supporting platform 22 further includes a driving member 221 for driving the radar support 23 to rotate. The driving member 221 is disposed on the supporting platform 22 and connected to the radar mounting member 231. Preferably, the driving member 221 is a motor, and the radar support 23 is driven by the motor to rotate, so that the radar mounted on the radar support 23 rotates around the axis of the motor.
Specifically, fig. 3 is a schematic perspective view of the electromagnetic wave reflection assembly 30 shown in fig. 1; referring to fig. 3, the electromagnetic wave reflection assembly 30 includes a corner reflector 31, a corner reflector holder 32, a lifting rod 33 and a base 34; the lifter 33 is mounted on the base 34, and the corner reflector 31 is mounted on the top end of the lifter 33 via the corner reflector holder 32. The corner reflector bracket can move up and down along the lifting rod 33 and is locked, so that the corner reflector bracket 32 can be stopped at any height of the lifting rod 33 to simulate targets with different heights.
Specifically, in order to improve the effect of reflecting electromagnetic waves, the corner reflector 31 includes a first reflection plate 311, a second reflection plate 312, and a third reflection plate 313, and the side edges of the first reflection plate 311, the second reflection plate 312, and the third reflection plate 313 are connected in sequence to form a tetrahedron with an open bottom, and the opening faces the radar fixing component 20.
Specifically, fig. 4 is a schematic perspective view of the moving assembly 13 shown in fig. 1; referring to fig. 4, the moving assembly 13 further includes a moving plate 130 and a guide wheel 131, and the guide wheel 131 is disposed at the bottom of the moving plate 130. The guide wheels 131 facilitate the switching of the longitudinal moving rail 11 or the lateral moving rail 12 by the auxiliary moving assembly 13, and one of the guide wheels 131 is in contact with the longitudinal moving rail 11 or the lateral moving rail 12 at the time of switching.
Specifically, the moving assembly 13 further includes a sliding member 132 for assisting the moving plate 130 to slide within the moving rail 10, and the sliding member 132 is installed at a side of the moving plate 130 and cooperates with an inner side of the moving rail 10 such that the moving assembly 13 can move on the moving rail 10 in a predetermined direction.
The working principle of the millimeter wave radar system is that electromagnetic wave signals in a millimeter wave frequency range are transmitted to targets, the electromagnetic wave signals meet the targets such as automobiles, pedestrians, buildings, the ground and the like in the space transmission process, the targets send the electromagnetic wave signals reflecting certain energy back to the millimeter wave radar system, and after the electromagnetic wave signals are received by a corner reflector of the millimeter wave radar system, the relevant information of the targets can be obtained through corresponding processing. Therefore, the millimeter wave radar detects the target by acquiring the echo signal reflected by the target.
Understandably, in the actual use process, the millimeter wave radar performance evaluation device is placed in a darkroom, the radar, the track and the detection target can be quickly and conveniently arranged through the movable guide rail 10, the radar fixing component 20 and the electromagnetic wave reflection component 30, the sliding component 13 is installed on the movable guide rail 10, so that the electromagnetic wave reflection component 30 moves along the preset direction at the movable guide rail 10, the radar can receive and transmit electromagnetic wave signals and detect the field angle of the electromagnetic wave signals, and the radar can be evaluated by carrying out signal intensity, signal-to-noise ratio, angle measurement precision and phase noise. The utility model discloses simple structure can arrange the radar fast to adjust the position of surveying the target, improve aassessment efficiency.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A millimeter wave radar performance evaluation device characterized by comprising:
a moving guide (10), the moving guide (10) comprising a longitudinal moving guide (11) and a transverse moving guide (12); the transverse moving guide rail (12) is arranged on the side surface of the longitudinal moving guide rail (11);
a radar fixing component (20) which is arranged at one end of the longitudinal moving guide rail (11);
the electromagnetic wave reflection assembly (30) is slidably mounted on the moving guide rail (10) and is arranged opposite to the radar fixing assembly (20), and the electromagnetic wave reflection assembly (30) is used for receiving signals sent by the radar fixing assembly (20);
the moving guide rail (10) further comprises a moving assembly (13), the electromagnetic wave reflection assembly (30) is arranged on the moving assembly (13), the moving assembly (13) is arranged on the longitudinal moving guide rail (11) and/or the transverse moving guide rail (12), and the moving assembly (13) moves on the moving guide rail (10) along a preset direction.
2. The millimeter wave radar performance evaluation device according to claim 1, characterized in that: the radar fixing assembly (20) comprises a lifting track (21), a supporting platform (22) and a radar bracket (23), wherein one end of the lifting track (21) is installed at one end of the longitudinal moving guide rail (11) through a fixing piece (24); the supporting platform (22) is installed at the other end of the lifting rail (21), and the supporting platform (22) can move along the length direction of the lifting rail (21); the radar support (23) is arranged on the supporting platform (22) and moves along with the supporting platform (22).
3. The millimeter wave radar performance evaluation device according to claim 2, characterized in that: radar support (23) include radar mounting part (231) and set up a plurality of through-holes (232) on radar mounting part (231), radar mounting part (231) set up in on supporting platform (22).
4. The millimeter wave radar performance evaluation device according to claim 3, characterized in that: the supporting platform (22) further comprises a driving piece (221) used for driving the radar support (23) to rotate, and the driving piece (221) is arranged on the supporting platform (22) and connected with the radar mounting piece (231).
5. The millimeter wave radar performance evaluation device according to claim 1, characterized in that: the electromagnetic wave reflection assembly (30) comprises a corner reflector (31), a corner reflector bracket (32), a lifting rod (33) and a base (34); the lifting rod (33) is installed on the base (34), and the corner reflector (31) is installed at the top end of the lifting rod (33) through the corner reflector bracket (32).
6. The millimeter wave radar performance evaluation device according to claim 5, characterized in that: the corner reflector (31) comprises a first reflecting plate (311), a second reflecting plate (312) and a third reflecting plate (313), wherein the side edges of the first reflecting plate (311), the second reflecting plate (312) and the third reflecting plate (313) are sequentially connected to form a tetrahedron with an opening at the bottom, and the opening faces the radar fixing component (20).
7. The millimeter wave radar performance evaluation device according to claim 1, characterized in that: the moving assembly (13) further comprises a moving disc (130) and a guide wheel (131), and the guide wheel (131) is arranged at the bottom of the moving disc (130).
8. The millimeter wave radar performance evaluation device according to claim 7, characterized in that: the moving assembly (13) further comprises a sliding member (132) for assisting the moving assembly (13) to slide in the moving guide rail (10), and the sliding member (132) is mounted on the side surface of the moving disk (130).
9. The millimeter wave radar performance evaluation device according to claim 1, characterized in that: the movable guide rail (10) further comprises a positioning mechanism (14), and the positioning mechanism (14) is arranged between the radar fixing component (20) and the electromagnetic wave reflecting component (30).
10. The millimeter wave radar performance evaluation device according to claim 1, characterized in that: the lateral surface of the longitudinal moving guide rail (11) is also provided with a mounting groove (111), and the transverse moving guide rail (12) is mounted on the longitudinal moving guide rail (11) through the mounting groove (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120162813.6U CN214954054U (en) | 2021-01-20 | 2021-01-20 | Millimeter wave radar performance evaluation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120162813.6U CN214954054U (en) | 2021-01-20 | 2021-01-20 | Millimeter wave radar performance evaluation device |
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| CN214954054U true CN214954054U (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117930161A (en) * | 2024-03-21 | 2024-04-26 | 昆山寰安电子科技有限公司 | Millimeter wave radar gain measurement device and method |
-
2021
- 2021-01-20 CN CN202120162813.6U patent/CN214954054U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117930161A (en) * | 2024-03-21 | 2024-04-26 | 昆山寰安电子科技有限公司 | Millimeter wave radar gain measurement device and method |
| CN117930161B (en) * | 2024-03-21 | 2024-06-07 | 昆山寰安电子科技有限公司 | Millimeter wave radar gain measurement device and method |
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