Radar target identification reliability test equipment, test system and test method

Abstract

The invention discloses radar target recognition reliability test equipment which comprises a box body, a box door and a temperature and humidity control assembly. The box door is hinged to the box body, one side of the box body is provided with a wave-transparent window, and a wave-transparent plate is arranged on the wave-transparent window; the temperature and humidity control assembly is arranged in the box body, and the temperature and humidity in the box body are adjusted through the temperature and humidity control assembly; the invention further discloses a testing system and a testing method based on the equipment. According to the radar target recognition reliability test equipment, test system and test method, objective evaluation can be carried out on radar environment perception reliability, opening design is carried out on the structure of an existing incubator on the basis of the existing incubator, the application of the wave-transparent plate is highlighted, the heat preservation effect of the original structure of the incubator is maintained to a certain extent, and the reliability of radar target recognition is improved. The transmission of electromagnetic waves is realized, and the fusion test of the traditional temperature and humidity and the emerging electromagnetic communication field is realized.

Description

Technical Field

[0001] The present invention relates to a technology for testing environmental perception information processing of intelligent network-connected vehicles, and in particular to a radar target recognition reliability testing device, a testing system and a testing method for testing intelligent network-connected vehicles. Background Art

[0002] With the development of intelligent connected vehicle technology, the intelligent and connected functions of automobiles are gradually being commercialized. Self-driving cars are also in a critical period of moving from L2+ to L3 and above, which will inevitably be accompanied by the coordinated development of the environmental perception system, decision-making system, and execution system of self-driving cars. Radar, as one of the high-precision components for environmental perception of intelligent connected vehicles, detects the surrounding environment of the vehicle and processes information through electromagnetic wave signals. Its accuracy and reliability directly affect the driving safety and driving experience of self-driving cars. How to objectively evaluate the reliability of radar target recognition has always been a difficult problem in the field of environmental perception and information processing of intelligent connected vehicles.

[0003] At present, the requirements of various automobile manufacturers for radar manufacturers have gradually expanded from single radar RF testing and performance testing requirements to include electromagnetic compatibility, vibration, high and low temperature and other electromagnetic environment and physical and chemical environment testing requirements, so that radar can meet automotive grade requirements. How to monitor the reliability of radar target recognition in special environments is an urgent problem that needs to be solved. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art and disclose a radar target recognition reliability test device, a test system and a test method that can objectively evaluate the reliability of radar environment perception.

[0005] A radar target recognition reliability test device comprises a box body, a box door, and a temperature and humidity control component; the box door is hinged on the box body, a wave-transmitting window is arranged on one side of the box body, and a wave-transmitting plate is arranged on the wave-transmitting window; the temperature and humidity control component is arranged in the box body, and the temperature and humidity in the box body are adjusted by the temperature and humidity control component.

[0006] Furthermore, the wave-transmitting plate is made of wave-transmitting heat-insulating material.

[0007] Furthermore, the transmission loss of the wave-transmitting plate is between 0 dB and 3 dB, and in particular, the transmission loss of the wave-transmitting plate is 1 dB.

[0008] Furthermore, the box body includes an inner box body and an outer box body, an insulation layer is filled between the inner box body and the outer box body, and the interior of the inner box body is a test cavity.

[0009] Furthermore, a partition is provided in the inner box to separate the inner box into a test chamber and a temperature control chamber; the test chamber is used to place the experimental object, and the temperature control chamber is used to place the temperature and humidity control component.

[0010] Furthermore, the wave-transmitting window of the inner box body and the wave-transmitting window of the outer box body are connected via an epoxy resin fiberboard, and are sealed to the wave-transmitting board via a rubber pad.

[0011] Furthermore, the wave-transmitting plate is in the shape of a flat plate.

[0012] Furthermore, the wave-transmitting plate has a semi-cylindrical structure, and the axis of the cylinder is in the vertical direction.

[0013] Furthermore, the wave-transmitting plate has a hemispherical structure, and the center of the sphere is the center of the transmitting end face of the millimeter-wave radar to be measured.

[0014] Furthermore, the wave-transmitting window is square or circular, and the side length or radius is not less than 40 cm.

[0015] Furthermore, the maximum size of the wave-transmitting window is determined by the size of the test chamber and the temperature control effect of the temperature and humidity control component.

[0016] Furthermore, a heating wire is arranged on the inner side of the outer box body around the wave-transmitting window.

[0017] A radar reliability test system based on the above target recognition reliability test device comprises a radar bracket to be tested, a radar target recognition reliability test device, a radar target simulator, and a radar data collector;

[0018] The radar bracket to be tested is fixed inside the radar target recognition reliability test equipment, and the radar fixing position on the radar bracket to be tested is directly opposite to the center of the wave-transmitting window;

[0019] The transmitting antenna and receiving antenna of the radar target simulator are located outside the radar target recognition reliability test equipment, and the transmitting antenna and the receiving antenna are directly facing the center of the wave-transmitting window;

[0020] The radar data collector is located outside the radar target recognition reliability test device and enters the box body through a data line passing through a wire hole on the box body.

[0021] Furthermore, the radar is fixed at the center of the spherical wave-transparent plate.

[0022] Furthermore, the radar reliability test system also includes a test turntable, a swing arm, an antenna pole and a controller. The test turntable is relatively fixed to the radar target identification reliability test equipment. The antenna pole is vertically arranged and connected to the test turntable through the swing arm. The controller is connected to the test turntable signal. The controller controls the test turntable to drive the antenna pole to rotate through the swing arm. The transmitting antenna and the receiving antenna of the radar target simulator are fixed on the antenna pole.

[0023] Furthermore, the radar reliability testing system also includes an absorbing material plate, the absorbing material surface of the absorbing material plate faces the direction of the wave-transmitting window and at least blocks the rear and left and right sides of the transmitting antenna and the receiving antenna.

[0024] A test method based on a radar reliability test system comprises the following steps:

[0025] Step 1) The radar to be tested is installed at the radar fixing position on the radar bracket to be tested, and the radar transmitting end face is directly opposite to the center of the wave-transmitting plate, and is directly opposite to the transmitting antenna and receiving antenna of the radar target simulator outside the wave-transmitting window;

[0026] Step 2) Setting the radar target recognition reliability test equipment operating conditions;

[0027] Step 3) Setting the distance, speed, and RCS parameters of the radar target simulator, and setting the test angle between the radar target simulator transmitting antenna, receiving antenna, and the radar to be tested through the test turntable;

[0028] Step 4) Under the operating conditions of the radar target recognition reliability test equipment, collect the data of the output target of the radar target simulator to be tested and output the test results.

[0029] Furthermore, the step 2) includes but is not limited to high temperature operation, low temperature operation, temperature gradient, damp heat cycle, temperature cycle, and steady-state damp heat test conditions.

[0030] The beneficial effects achieved by the present invention are:

[0031] The present invention provides a radar target recognition reliability test device, test system and test method that can realize objective evaluation of radar environment perception reliability. On the basis of the existing temperature box, the structure is designed with an opening, and the application of the wave-transmitting plate is highlighted. It not only maintains the insulation effect of the original structure of the temperature box to a certain extent, but also realizes the transmission of electromagnetic waves, and realizes the fusion test of traditional temperature and humidity and the emerging electromagnetic communication field. The matching design of the test system and the test method provides the industry with the equipment for radar target recognition performance test layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1A schematic diagram of the three-dimensional structure of a radar target recognition reliability testing device of the present invention;

[0033] Figure 2 for Figure 1 The main view;

[0034] Figure 3 for Figure 2 Middle AA section view;

[0035] Figure 4 Schematic diagram of radar reliability test system.

[0036] The reference numerals are as follows:

[0037] 1. Box body, 11. Inner box body, 112. Test chamber, 12. Outer box body, 2. Box door, 3. Temperature and humidity control assembly, 4. Wave-transmitting plate, 41. Base, 42. Upper cover, 5. Epoxy resin fiberboard, 6. Radar target simulator, 61. Transmitting antenna and receiving antenna, 71. Test turntable, 72. Swing arm, 73. Antenna pole, 74. Controller. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] A radar target recognition reliability test device, such as Figures 1 to 3 As shown, it includes a box body 1, a box door 2, and a temperature and humidity control component 3; the box door 2 is hinged on the box body 1, a wave-transmitting window is arranged on one side of the box body 1, and a wave-transmitting plate 4 is arranged on the wave-transmitting window; the temperature and humidity control component 3 is arranged in the box body 1 to adjust the temperature and humidity in the box body 1.

[0040] The wave-transmitting plate 4 is made of wave-transmitting heat-insulating materials, mostly high polymers.

[0041] The transmission loss of the wave-transmitting plate 4 is between 0 dB and 3 dB. In particular, the transmission loss of the wave-transmitting plate 4 is 1 dB, so as to ensure that the signal has sufficient strength for practical application or testing after penetrating the wave-transmitting plate.

[0042] The box body 1 comprises an inner box body 11 and an outer box body 12 . A heat-insulating layer is filled between the inner box body 11 and the outer box body 12 . The interior of the inner box body 11 is a test chamber 112 .

[0043] A partition is provided inside the inner box 11 to separate the inner box 11 into a test chamber 112 and a temperature control chamber; the test chamber 112 is used to place the experimental object, and the temperature control chamber is used to place the temperature and humidity control component 3.

[0044] The wave-transmitting window of the inner box 11 and the wave-transmitting window of the outer box are connected via an epoxy resin fiberboard 5 and are sealed to the wave-transmitting board 4 via a rubber pad.

[0045] The wave-transmitting plate 4 is in the shape of a flat plate.

[0046] The wave-transmitting plate 4 is in a semi-cylindrical structure, with the axis of the cylinder in the vertical direction, to ensure that when testing at a specific height, the radar's transmission signals within the horizontal angle range are all transmitted perpendicularly to the contact surface of the wave-transmitting plate.

[0047] The wave-transmitting plate 4 is in a hemispherical structure, and the center of the sphere is the center of the transmitting end face of the millimeter-wave radar to be measured.

[0048] The wave-transmitting window is square or circular, with a side length or radius not less than 40 cm.

[0049] The maximum size of the wave-transmitting window is determined by the size of the test chamber 112 and the temperature control effect of the temperature and humidity control component 3 .

[0050] An electric heating wire is arranged on the inner side of the outer box body 12 around the wave-transmitting window, so as to optimize the compensation of the box body temperature by the wave-transmitting plate when there is a certain amount of heat loss.

[0051] A radar reliability test system based on the above target recognition reliability test device comprises a radar bracket to be tested, a radar target recognition reliability test device, a radar target simulator 6, and a radar data collector;

[0052] The radar bracket to be tested is fixed inside the radar target recognition reliability test equipment, and the radar fixing position on the radar bracket to be tested is directly opposite to the center of the wave-transmitting window;

[0053] The transmitting antenna and receiving antenna 61 of the radar target simulator 6 are located outside the radar target recognition reliability test equipment, and the transmitting antenna and receiving antenna 61 are directly facing the center of the wave-transmitting window;

[0054] The radar data collector is located outside the radar target recognition reliability test equipment and enters the box through the wire hole on the box through the data line.

[0055] The radar is fixed at the center of the hemispherical wave-transmitting plate 4 .

[0056] The radar reliability test system also includes a test turntable 71, a swing arm 72, an antenna pole 73 and a controller 74. The test turntable 71 is relatively fixed to the radar target recognition reliability test equipment. The antenna pole 73 is vertically arranged and connected to the test turntable 71 through the swing arm 72. The controller 74 is connected to the test turntable 71 by signal. The controller 74 controls the test turntable 71 to drive the antenna pole 73 to rotate through the swing arm 72. The transmitting antenna and the receiving antenna 61 of the radar target simulator are fixed on the antenna pole 73.

[0057] The radar reliability test system also includes an absorbing material plate, the absorbing material surface of the absorbing material plate faces the direction of the wave-transmitting window and at least blocks the rear and left and right sides of the transmitting antenna and the receiving antenna.

[0058] A test method based on a radar reliability test system comprises the following steps:

[0059] Step 1) The radar to be tested is installed at the radar fixing position on the radar bracket to be tested, and the radar transmitting end face is directly opposite to the center of the wave-transmitting plate, and is directly opposite to the transmitting antenna and receiving antenna of the radar target simulator outside the wave-transmitting window;

[0060] Step 2) Setting the radar target recognition reliability test equipment operating conditions;

[0061] Step 3) Setting the distance, speed, and RCS parameters of the radar target simulator, and setting the test angle between the radar target simulator transmitting antenna, receiving antenna, and the radar to be tested through the test turntable;

[0062] Step 4) Under the operating conditions of the radar target recognition reliability test equipment, collect the data of the output target of the radar target simulator to be tested and output the test results.

[0063] Step 2) includes but is not limited to high temperature operation, low temperature operation, temperature gradient, damp heat cycle, temperature cycle, and steady-state damp heat test conditions.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should all be included in the protection scope of the claims of the present invention.

Claims

1. A radar target recognition reliability test device, characterized in that: The invention comprises a box body (1), a box door (2), and a temperature and humidity control component (3); the box door (2) is hinged on the box body (1); a wave-transmitting window is arranged on one side of the box body (1); a wave-transmitting plate (4) is arranged on the wave-transmitting window; the temperature and humidity control component (3) is arranged in the box body (1) to adjust the temperature and humidity in the box body (1).

2. The radar target recognition reliability testing device according to claim 1, characterized in that: The wave-transmitting plate (4) is made of wave-transmitting heat-insulating material.

3. The radar target recognition reliability testing device according to claim 2, characterized in that: The transmission loss of the wave-transmitting plate (4) is between 0 dB and 3 dB, and in particular, the transmission loss of the wave-transmitting plate (4) is 1 dB.

4. The radar target recognition reliability testing device according to claim 1, characterized in that: The box body (1) comprises an inner box body (11) and an outer box body (12); a heat-insulating layer is filled between the inner box body (11) and the outer box body (12); and the interior of the inner box body (11) is a test chamber (112).

5. The radar target recognition reliability testing device according to claim 4, characterized in that: The wave-transmitting window of the inner box (11) and the wave-transmitting window of the outer box are connected via an epoxy resin fiberboard (5), and are sealed to the wave-transmitting plate (4) via a rubber pad.

6. The radar target recognition reliability testing device according to claim 1, characterized in that: The wave-transmitting plate (4) is in a semi-cylindrical structure, with the axis of the cylinder in the vertical direction; or in a hemispherical structure, with the center of the sphere being the center of the transmitting end face of the millimeter-wave radar to be measured.

7. The radar target recognition reliability testing device according to claim 4, characterized in that: An electric heating wire is arranged on the inner side of the outer box (12) around the wave-transmitting window.

8. A radar reliability test system based on the above target recognition reliability test device, characterized in that: It includes a radar bracket to be tested, a radar target recognition reliability test device, a radar target simulator (6), and a radar data collector; The radar bracket to be tested is fixed inside the radar target recognition reliability test equipment, and the radar fixing position on the radar bracket to be tested is directly opposite to the center of the wave-transmitting window; The transmitting antenna and the receiving antenna (61) of the radar target simulator (6) are located outside the radar target recognition reliability test equipment, and the transmitting antenna and the receiving antenna (61) are directly opposite to the center of the wave-transmitting window; The radar data collector is located outside the radar target recognition reliability test device and enters the box body through a data line passing through a wire hole on the box body.

9. The radar reliability testing system according to claim 8, characterized in that: The test turntable (71), a swing arm (72), an antenna pole (73) and a controller (74); the test turntable (71) is relatively fixed to the radar target identification reliability test equipment; the antenna pole (73) is vertically arranged and is transmission-connected to the test turntable (71) through the swing arm (72); the controller (74) is signal-connected to the test turntable (71); the controller (74) controls the test turntable (71) to drive the antenna pole (73) to rotate through the swing arm (72); and the transmitting antenna and the receiving antenna (61) of the radar target simulator are fixed on the antenna pole (73).

10. A test method based on a radar reliability test system, characterized in that: The following steps are involved: Step 1) The radar to be tested is installed at the radar fixing position on the radar bracket to be tested, and the radar transmitting end face is directly opposite to the center of the wave-transmitting plate, and is directly opposite to the transmitting antenna and receiving antenna of the radar target simulator outside the wave-transmitting window; Step 2) Setting the radar target recognition reliability test equipment operating conditions; Step 3) Setting the distance, speed, and RCS parameters of the radar target simulator, and setting the test angle between the radar target simulator transmitting antenna, receiving antenna, and the radar to be tested through the test turntable; Step 4) Under the operating conditions of the radar target recognition reliability test equipment, collect the data of the output target of the radar target simulator to be tested and output the test results.

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