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Environment test device and method of vehicle-mounted millimeter wave radar

A millimeter-wave radar and environmental testing technology, applied in the field of vehicle-mounted millimeter-wave radar testing, can solve the inaccurate test of radar performance indicators, the inability to verify that the work and performance of radar products meet the expected design, and the inability to detect changes and stability of radar signal indicators and other problems to achieve the effect of ensuring reliability

Inactive Publication Date: 2017-07-25
HUIZHOU DESAY SV AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have disadvantages. The disadvantage of the first method is: start the machine in the test box to observe whether the radar is working, because the random reflection of the radar signal by the test box makes the performance index test of the radar inaccurate, so it cannot be verified. Whether the work and performance of the radar product can meet the expected design; the disadvantage of the second method is: do not start the monitoring during the test, and test the performance of the radar product after the test, because it is not real-time online, and it cannot be detected by changing the experimental environment and then testing Index Variation and Stability of Radar Signals in Ambient Climate

Method used

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  • Environment test device and method of vehicle-mounted millimeter wave radar
  • Environment test device and method of vehicle-mounted millimeter wave radar
  • Environment test device and method of vehicle-mounted millimeter wave radar

Examples

Experimental program
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Embodiment 1

[0024] Such as figure 1 As shown, the present embodiment provides an environmental testing device for a vehicle-mounted millimeter-wave radar. The device includes a test dark box 1, and the test dark box 1 is provided with an environment isolation cover 2 for placing the radar 8 to be tested. The environment isolation cover 2 is connected to the The side corresponding to the signal emission direction of the radar 8 to be tested is a wave-transparent material. In this example, if figure 1 As shown, the transmitting surface 81 is the signal transmitting surface of the radar 8 to be tested, and the plastic plate 21 made of wave-transparent material is arranged on the environmental isolation cover. An environment simulator 6 for simulating different environmental conditions is also provided outside the test dark box 1, and the environment simulator 6 is connected to the environment isolation cover 2 through a connecting piece, and the connecting piece in this embodiment is a conn...

Embodiment 2

[0027] Such as figure 2 As shown, in the test device in the present embodiment, in addition to the test dark box 1, the environmental simulator 6, the connecting pipe 7, the environmental isolation cover 2 and the radar to be tested 8 mentioned in the embodiment 1, the inside of the test dark box 1 is also provided with There is a wave-absorbing layer 3, a horn antenna 5 and a corner reflector 4, wherein the horn antenna 5 is connected with a spectrum analyzer for testing radar signal strength and a power meter for testing power. The outside of the test dark box is also provided with a host computer connected to the radar to be tested 8, and the host computer can be a computer, a notebook computer or a tablet computer, etc., and is connected to the radar to be tested 8 so as to monitor the operating conditions of the radar in the test dark box.

[0028] In this embodiment, except the side opposite to the emitting surface 21 of the environmental isolation cover 2 is a plastic ...

Embodiment 3

[0032] Such as image 3 As shown, this embodiment is different from the second embodiment except that the installation position of the horn antenna 5 is different, and the other structures of the testing device are the same. The horn antenna 5 in this embodiment is arranged on the inner wall of the test obscura 1 which has a certain angle with the plane where the environment isolation cover is located. The method of this arrangement is mainly to test the angle measurement function of the radar by testing different reflection angles. Testers can change the setting position of the horn antenna 5 according to the parameters to be tested. The above embodiments have listed the test distance or angle, rather than limiting the setting method of the horn antenna.

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Abstract

The invention discloses an environment test device of a vehicle-mounted millimeter wave radar. The test device comprises a test dark box, the test dark box is internally provided with an environment shielding can for placing the radar to be tested, the side, corresponding to a signal emitting direction of the radar to be tested, of the environment shielding can includes a wave transmitting material, an environment simulator for simulating an environment condition is arranged outside the test dark box, and the environment simulator guides the environment condition in the environment simulator into the environment shielding can via a connecting piece. The invention also discloses an environment test method of the vehicle-mounted millimeter wave radar. Thus, test parts in the test dark box are prevented from damage caused by a special environment, the working condition and performance indexes of the radar to be tested can be tested in real time, and it is ensured that the reliability of the millimeter wave radar in different climate environments can be tested and verified accurately.

Description

technical field [0001] The invention relates to the field of testing of vehicle-mounted millimeter-wave radars, in particular to an environmental testing device and method for vehicle-mounted millimeter-wave radars. Background technique [0002] With the development of global urbanization and the massive increase and popularization of automobiles, traffic safety issues have attracted more and more attention and attention. Car radar system is becoming more and more popular as a convenient vehicle accessory for drivers, so as to effectively increase the comfort and safety of car driving. Vehicle-mounted millimeter-wave radar is the main sensor in advanced driver assistance systems. It helps drivers detect possible dangers in the shortest possible time by detecting or sensing information about objects or obstacles around the vehicle, so as to attract attention and improve safety. , Avoid or reduce accidents through prior prevention. [0003] At present, when traditional milli...

Claims

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Application Information

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IPC IPC(8): G01S13/93
CPCG01S13/93
Inventor 张禅亮廖剑雄邹晓文
Owner HUIZHOU DESAY SV AUTOMOTIVE
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