CN217521348U

CN217521348U - Millimeter wave radar resolution testing device

Info

Publication number: CN217521348U
Application number: CN202221066586.8U
Authority: CN
Inventors: 李爽; 刘云; 黄文锐; 欧阳耀果; 任毅
Original assignee: Chengdu Shangfu Zhigan Technology Co ltd
Current assignee: Chengdu Shangfu Zhigan Technology Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-09-30
Anticipated expiration: 2032-05-06

Abstract

The utility model provides a millimeter wave radar resolution ratio testing arrangement relates to automotive electronics technical field. This millimeter wave radar resolution ratio testing arrangement, including angle scale and distance scale, angle scale includes a plurality of angle scale connecting blocks and angle scale connecting block, distance scale includes a plurality of distance scale connecting blocks and scale connecting block, piece angle scale connecting block and four inside angles of distance scale connecting block all are provided with the strong magnet. The millimeter wave radar resolution testing device is easy to carry and transport, and the graduated scales are connected by using the magnets, so that the millimeter wave radar resolution testing device is convenient to install, use and disassemble; and the graduated scale has stronger use precision and repeatable precision after being assembled. The device has low manufacturing cost and high precision, can well test the angular resolution and the range resolution of the millimeter wave radar, and has higher test precision.

Description

Millimeter wave radar resolution testing arrangement

Technical Field

The utility model relates to a millimeter wave radar resolution ratio testing arrangement specifically is a millimeter wave radar resolution ratio testing arrangement, belongs to automotive electronics technical field.

Background

The millimeter wave is a section of radio wave, and is usually called as millimeter wave by an electromagnetic wave with a wavelength of 1-10 mm, and is located in a wavelength range where microwave and far-infrared wave are overlapped, so that the millimeter wave has the characteristics of two wave spectrums. 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, radio waves are emitted out, then, echoes are received, and the position data of a target is measured according to the time difference between receiving and sending.

Millimeter wave radars have a variety of features, for example, millimeter wave radars have narrower beams under the same antenna aperture, which can improve the angle resolution and angle measurement accuracy of the radar, and are advantageous for resisting electronic interference, clutter interference, multipath reflection interference, and the like. And because the working frequency is high, large signal bandwidth and Doppler frequency shift can be obtained, the measurement accuracy and the resolution capability of distance and speed can be improved, and target characteristics can be analyzed. The antenna has small caliber, small element and small device volume, and is suitable for airplanes, satellites or automobiles.

In the millimeter wave radar development process, the performance index of the radar often needs to be verified, and several parameters which are often more interesting in engineering application are as follows: the range resolution of the radar and the angular resolution of the radar. The radar resolution is the difference required by the radar to distinguish two targets into separate targets, and represents the capacity of the radar to distinguish multiple targets in a dense target environment. Radar resolution typically includes range resolution, velocity resolution, and angular resolution. Distance resolution refers to the minimum distance that will separate two equally sized point targets in the distance dimension; the angular resolution refers to the minimum azimuth angle between the targets required by two targets with the same distance and the same echo strength which can be distinguished by the radar.

An expensive target simulator is usually needed as a reference target to test the radar distance resolution and the radar angle resolution, and instruments needed by the test method are too expensive and are not easy to obtain; in another method of measuring with a tape and a thread rope, the distance is continuously measured with the tape and adjusted or the thread rope is pulled out by a corresponding angle to complete the measurement.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The present invention aims to solve the above problems by providing a millimeter wave radar resolution testing apparatus, so as to solve the problem that the prior art usually needs an expensive target simulator as a reference target to test radar distance resolution and angular resolution, and the instrument required by this kind of testing method is too expensive and not easy to obtain; in addition, the other measuring mode using a tape and a thread rope needs to continuously measure the distance with the tape and adjust or use the thread rope to pull out the corresponding angle to finish the measurement, and the method has the problems of complex operation, extremely low precision and inaccurate test result.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a millimeter wave radar resolution ratio testing arrangement, includes angle scale and distance scale, angle scale includes a plurality of angle scale connecting blocks and angle scale connecting block, distance scale includes a plurality of distance scale connecting blocks and scale connecting block, the angle scale connecting block sets up to the arc, the quantity of angle scale connecting block sets up to twelve, the distance scale connecting block sets up to the linear type, the quantity of distance scale connecting block sets up to ten, the piece angle scale connecting block all is provided with the strong magnet with four inside angles of distance scale connecting block, the angle scale connecting block is inside to be connected through the strong magnet each other.

Preferably, the angle scale connecting block can form a semi-circular arc with a radius of 5 meters after being connected by using a semi-circle center of a circle after the angle scale connecting block is formed as an original point, corresponding angle scales are carved on the top of the angle scale connecting block, the precision of the angle scales is set to be 0.25 degrees, the angle scales are divided into plus and minus 90 degrees and totally 180 degrees, the angle scale connecting block is formed by taking about 15 degrees as one block, a large-size device is placed in a split mode, the device is convenient to store in a transportation mode, and in the using process, only partial modules of the device can be combined as required.

Preferably, be provided with the scale initial point apart from scale connecting block bottom, be carved with apart from the scale at the scale connecting block top, the precision sets up to 1 centimetre, totally 10 meters.

Preferably, the angle scale connecting block is provided with the spout with apart from in the middle of the scale connecting block, as the anti-support guide rail of slip angle, angle scale and distance scale both ends bottom are provided with a plurality of adjustable landing legs for the leveling scale.

Preferably, the inside sliding trolley that is provided with of spout, the sliding trolley bottom is rotated and is connected with a plurality of pulleys, and the sliding trolley can be placed inside the spout to can slide in the spout is inside, improve stability.

Preferably, the sliding trolley top is provided with a sliding support, the sliding support outside is provided with the fixed block, the fixed block has inside seted up the square hole for be fixed in the scale with the sliding support on, the sliding support top is provided with scalable regulation buckle for fixed corner reflector or radar.

Preferably, inside spring and the joint pole of being provided with of fixed block, the joint pole run through the fixed block and with fixed block sliding connection, inside the joint pole was located to the spring housing, fixed block one side fixedly connected with scale pointer, fixed block pass through spring and connecting rod joint pole with the dolly card that slides on angle scale or distance scale to be convenient for fixed.

The utility model provides a millimeter wave radar resolution ratio testing arrangement, its beneficial effect who possesses as follows:

1. this millimeter wave radar resolution ratio testing arrangement angle scale connecting block all is provided with the strong magnet with four inside angles apart from the scale connecting block, the angle scale connecting block is inside to be connected through the strong magnet each other, the semi-circle centre of a circle after the angle scale connecting block uses it to form is the original point, can form the semicircle that the radius is 5 meters after connecting, corresponding angle scale has been carved with at angle scale connecting block top, angle scale precision sets up to 0.25, divide into plus or minus 90, totally 180, the angle scale connecting block uses about 15 to be one, places the device split of large size, conveniently saves in the transportation to in the use, can only make up its partial module as required.

2. The millimeter wave radar resolution testing device is low in manufacturing cost and high in precision, can well test the angular resolution and the range resolution of the millimeter wave radar, and has high testing precision.

Drawings

FIG. 1 is a schematic view of the whole structure of the present invention after combination;

fig. 2 is a schematic view of the sliding bracket of the present invention;

FIG. 3 is a side sectional view of the scale of the present invention;

fig. 4 is a schematic structural view of the adjustable leg of the present invention;

fig. 5 is a schematic structural view of the connecting block of the graduated scale of the present invention;

fig. 6 is a schematic structural diagram of the fixing block of the present invention.

In the figure: 1. an angle scale; 101. an angle scale connecting block; 102. a distance scale connecting block; 104. the original point of the scale; 2. a distance scale; 201. a pulley; 202. sliding the trolley; 203. a fixed block; 204. a retractable adjusting buckle; 205. a sliding support; 301. strong magnets; 302. a chute; 401. an adjustable leg; 501. a connecting block of an angle ruler; 502. a graduated scale connecting block; 601. a scale pointer; 602. a square hole; 603. a spring; 604. a clamping and connecting rod.

Detailed Description

An embodiment of the utility model provides a millimeter wave radar resolution ratio testing arrangement.

Referring to fig. 1, 2, 3, 4, 5 and 6, the angle scale comprises an angle scale 1 and a distance scale 2, the angle scale 1 comprises a plurality of angle scale connecting blocks 101 and an angle scale connecting block 501, the distance scale 2 comprises a plurality of distance scale connecting blocks 102 and a scale connecting block 502, the angle scale connecting blocks 101 are arranged in an arc shape, the number of the angle scale connecting blocks 101 is twelve, the distance scale connecting blocks 102 are arranged in a linear shape, the number of the distance scale connecting blocks 102 is ten, four corners inside the angle scale connecting blocks 101 and the distance scale connecting blocks 102 are all provided with strong magnets 301, the insides of the angle scale connecting blocks 101 are connected with each other through the strong magnets 301, the half circle center of the angle scale connecting blocks 101 after being formed is taken as the original point, a half arc with the radius of 5 meters can be formed after being connected, and the top of the angle scale connecting blocks 101 is provided with corresponding angle scales, the precision of the angle scale is set to be 0.25 degrees, the angle scale is divided into plus and minus 90 degrees, the angle scale is totally 180 degrees, the angle scale connecting block 101 is divided into 15 degrees, a large-size device is placed in a split mode and is convenient to store in a transportation mode, in addition, only partial modules of the angle scale connecting block can be combined according to needs in the using process, the original point 104 is arranged at the bottom end of the angle scale connecting block 102, distance scales are carved at the top of the distance scale connecting block 102, the precision is set to be 1 cm and totally 10 meters, a sliding groove 302 is arranged between the angle scale connecting block 101 and the distance scale connecting block 102 and is used as a sliding angle reverse support guide rail, a plurality of adjustable supporting legs 401 are arranged at the bottoms of the two ends of the angle scale 1 and the distance scale 2 and are used for leveling the scales, a sliding trolley 202 is arranged inside the sliding groove 302, a plurality of pulleys 201 are rotatably connected to the bottom of the sliding trolley 202 and can be placed inside the sliding groove 302 and can slide inside the sliding groove 302, stability is improved, sliding trolley 202 top is provided with sliding bracket 205, the sliding bracket 205 outside is provided with fixed block 203, fixed block 203 is inside to have seted up square hole 602, be used for being fixed in sliding bracket 205 on the scale, sliding bracket 205 top is provided with scalable regulation buckle 204, be used for fixed corner reflector or radar, fixed block 203 is inside to be provided with spring 603 and joint pole 604, joint pole 604 runs through fixed block 203 and with fixed block 203 sliding connection, the joint pole 604 is inside is located to spring 603 cover, fixed block 203 one side fixedly connected with scale pointer 601, fixed block 203 passes through spring 603 and connecting rod joint pole 604 and blocks sliding trolley 202 on angle scale 1 or distance scale 2, so as to be fixed.

Specifically, after correctly splicing all the components into the shape of fig. 1, selecting the corresponding angle scale connecting block 101 or distance scale connecting block 102 according to the content to be measured, for example, if the angle resolution of the radar needs to be tested, selecting the angle scale connecting block 101, if the distance resolution of the radar needs to be tested, selecting the distance scale connecting block 102, and arranging a plurality of adjustable supporting legs 401 at the bottoms of the two ends of the angle scale 1 and the distance scale 2 for leveling the scale.

Passing through scalable regulation buckle 204 fixed connection in sliding bracket 205 top with the radar that awaits measuring, and with sliding bracket 205 fixed connection in scale origin 104 department as shown in fig. 1, treat two and wait that the angle of measurement is anti-fixed in two other sliding bracket 205 tops, fixed block 203 is inside to be provided with spring 603 and joint pole 604, joint pole 604 runs through fixed block 203 and with fixed block 203 sliding connection, inside joint pole 604 was located to the spring 603 cover, fixed block 203 one side fixedly connected with scale pointer 601, fixed block 203 passes through spring 603 and connecting rod joint pole 604 and blocks slip dolly 202 on angle scale 1 or distance scale 2.

When testing the radar angular resolution, two sliding brackets 205 with corner reflectors are placed into a sliding groove 302 arranged inside the angle scale connecting block 101, the two sliding brackets 205 are firstly abutted, and then the two sliding brackets 205 are separated according to the interval of one degree, and the radar is used for testing.

When the radar range resolution is tested, the sliding support 205 with the corner reflector is placed inside the guide rail of the range scale connecting block 102, firstly, two sliding supports 205 can be placed at the top end, and then, one sliding support 205 is moved towards the approaching direction until the radar can distinguish the two sliding supports 205, so that the test is completed.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a millimeter wave radar resolution ratio testing arrangement, includes angle scale (1) and distance scale (2), its characterized in that: angle scale (1) includes a plurality of angle scale connecting blocks (101) and angle scale connecting block (501), distance scale (2) include a plurality of distance scale connecting block (102) and scale connecting block (502), angle scale connecting block (101) sets up to the arc, the quantity of angle scale connecting block (101) sets up to twelve, distance scale connecting block (102) sets up to the linear type, the quantity of distance scale connecting block (102) sets up to ten, piece angle scale connecting block (101) and four inside angles of distance scale connecting block (102) all are provided with strong magnet (301), angle scale connecting block (101) inside is connected through strong magnet (301) each other.

2. The millimeter wave radar resolution testing device according to claim 1, characterized in that: the angle scale connecting block (101) uses the semi-circle center of a circle after the angle scale connecting block (101) is formed as the original point, corresponding angle scales are marked on the top of the angle scale connecting block (101), and the angle scale connecting block (101) uses about 15 degrees as one block.

3. The millimeter wave radar resolution testing device according to claim 1, characterized in that: the distance scale connecting block is characterized in that a scale origin (104) is arranged at the bottom end of the distance scale connecting block (102), and distance scales are carved on the top of the distance scale connecting block (102).

4. A millimeter wave radar resolution testing device according to claim 1, characterized in that: the angle scale connecting block is characterized in that sliding grooves (302) are formed in the middles of the angle scale connecting block (101) and the distance scale connecting block (102), and a plurality of adjustable supporting legs (401) are arranged at the bottoms of the two ends of the angle scale (1) and the distance scale (2).

5. The millimeter wave radar resolution test device according to claim 4, characterized in that: a sliding trolley (202) is arranged in the sliding groove (302), and a plurality of pulleys (201) are rotatably connected to the bottom of the sliding trolley (202).

6. The millimeter wave radar resolution testing device according to claim 5, characterized in that: sliding trolley (202) top is provided with sliding bracket (205), sliding bracket (205) outside is provided with fixed block (203), square hole (602) have been seted up to fixed block (203) inside, sliding bracket (205) top is provided with scalable regulation buckle (204).

7. A millimeter wave radar resolution testing device according to claim 6, characterized in that: fixed block (203) inside spring (603) and joint pole (604) of being provided with, joint pole (604) run through fixed block (203) and with fixed block (203) sliding connection, inside joint pole (604) were located to spring (603) cover, fixed block (203) one side fixedly connected with scale pointer (601).