System and method for testing EMC (Electro Magnetic Compatibility) of auxiliary driving system

Abstract

The invention provides an auxiliary driving system EMC test system and method, and belongs to the technical field of automobile controller electromagnetic compatibility test.The auxiliary driving system EMC test system comprises a power source isolation module, an auxiliary driving system controller, a radar module, a scene simulation module, an image acquisition module, a computer and a test module; and a control instruction is sent to the scene simulation module to control the virtual automobile to move, and the scene simulation module feeds back information according to the movement of the virtual automobile and transmits working data to the computer at the same time. The computer sends out an interference signal through the test module and receives an electromagnetic signal fed back by the test system; and the computer performs analysis according to the working data input by the auxiliary driving system controller and the electromagnetic signal fed back by the test system and collected by the test module, and judges whether the auxiliary driving system controller passes the test or not. According to the invention, the electromagnetic compatibility test is carried out on the auxiliary driving system controller by simulating static and dynamic scenes.

Description

Technical Field

[0001] The invention belongs to the technical field of electromagnetic compatibility testing of automobile controllers, and in particular, the invention relates to an EMC testing system and method for an auxiliary driving system. Background Art

[0002] With the rapid development of science and technology information, the application of electronic information technology is becoming more and more extensive, and electromagnetic compatibility testing is becoming more and more important. Electromagnetic compatibility testing detects whether electronic equipment will generate unacceptable electromagnetic interference when working in the expected electromagnetic environment, or receive electromagnetic interference from other equipment.

[0003] Chinese patent 105120413B provides a test system for the electromagnetic compatibility immunity performance of an automobile entertainment system, comprising: an electromagnetic compatibility test system control platform, an electromagnetic compatibility test system, a power amplifier component, an entertainment test system, an antenna, an entertainment system host and a shielding room, wherein the electromagnetic compatibility test system control platform is connected to the electromagnetic compatibility test system and the entertainment test system through a universal interface bus respectively; the entertainment test system is connected to the entertainment system host through a cable; the electromagnetic compatibility test system is connected to the power amplifier component through a cable, and the power amplifier component is connected to the antenna.

[0004] The electromagnetic compatibility test of the system under test in the prior art is only a static test, and does not take into account the test requirements of the system under test in a dynamic scenario. Summary of the invention

[0005] The present invention aims to provide an EMC test system and method for an assisted driving system, so as to achieve the technical purpose of simulating static and dynamic scenarios to more effectively test the electromagnetic compatibility characteristics of an assisted driving system controller.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides an EMC test system for an assisted driving system, comprising a power isolation module, an assisted driving system controller, a radar module, a scene simulation module, an image acquisition module, a computer, and a test module. The assisted driving system controller is connected to a power supply through the power isolation module, the radar module is used to acquire a simulated radar signal emitted by the scene simulation module, the output end of the radar module is connected to the input end of the assisted driving system controller, the image acquisition module is used to acquire simulated image information input by the scene simulation module, the output end of the image acquisition module is connected to the input end of the assisted driving system controller, the output end of the assisted driving system controller is connected to the input end of the scene simulation module, the output end of the assisted driving system controller is connected to the input end of the computer, the output end of the computer is connected to the input end of the test module, and the output end of the test module is connected to the input end of the computer.

[0008] The power supply is connected to the assisted driving system controller through a power isolation module, the radar module inputs the collected radar signal to the assisted driving system controller, the image acquisition module inputs the collected image information to the assisted driving system controller, the assisted driving system controller outputs control instructions to the scene simulation module, the assisted driving system controller inputs assisted driving information to the computer, the computer outputs test instructions to the test module, and the test module inputs detection information to the computer.

[0009] The power isolation module adopts a line impedance stabilization network.

[0010] The radar module includes a front millimeter-wave radar, a left rear millimeter-wave radar and a right rear millimeter-wave radar. The output end of the front millimeter-wave radar is connected to the input end of the assisted driving system controller through a CAN bus, the left rear millimeter-wave radar is connected to the right rear millimeter-wave radar through a CAN bus, and the output end of the left rear millimeter-wave radar is connected to the input end of the assisted driving system controller through a CAN bus.

[0011] The scenario simulation module adopts the ADS test bench.

[0012] The image acquisition module adopts a camera.

[0013] The auxiliary driving control system controller is connected to a computer via a CAN to optical fiber converter.

[0014] The output end of the computer is connected to the input end of the test module through a power amplifier, and the output end of the test module is connected to the input end of the computer through a receiver.

[0015] The test module includes a first test antenna and a second test antenna.

[0016] The present invention provides an EMC test method for an assisted driving system:

[0017] Step 1: The assisted driving system controller collects the radar signal and image information simulated by the scene simulation module through the radar module and the image acquisition module respectively. The assisted driving system controller sends control instructions to the scene simulation module according to the radar signal and image information to control the movement of the virtual car. The scene simulation module feeds back the simulated radar signal to the radar module according to the movement of the virtual car, and feeds back the simulated image information to the image acquisition module. At the same time, the assisted driving system controller transmits the working data to the computer.

[0018] Step 2: The computer sends interference signals through the first test antenna and the second test antenna respectively and receives electromagnetic signals fed back by the test system.

[0019] Step 3: The computer analyzes the working data input by the assisted driving system controller and the electromagnetic signals fed back by the test system collected by the first test antenna and the second test antenna respectively, to determine whether the assisted driving system controller passes the test.

[0020] The technical effects of the present invention are:

[0021] (1) The present invention tests the assisted driving system controller by simulating static and dynamic scenarios, thereby more completely and effectively testing the electromagnetic compatibility characteristics of the assisted driving system controller.

[0022] (2) The radar module of the present invention includes three millimeter-wave radars, and the collected radar signals are more comprehensive.

[0023] (3) The present invention tests the assisted driving system controller through scenario simulation, which speeds up the development efficiency of the assisted driving system controller and reduces the testing cost.

[0024] (4) The first test antenna and the second test antenna of the present invention respectively test the auxiliary driving system controller at different positions, thereby improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] This specification includes the following drawings, which show the following contents:

[0026] Figure 1 A logical structure block diagram of an EMC test system and method for an auxiliary driving system of the present invention;

[0027] Figure 1 The markings are: 1. Power isolation module; 2. Assisted driving system controller; 3. Radar module; 4. Scene simulation module; 5. Image acquisition module; 6. Computer; 7. Test module. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0029] The present invention provides an EMC test system for an assisted driving system, comprising a power isolation module 1, an assisted driving system controller 2, a radar module 3, a scene simulation module 4, an image acquisition module 5, a computer 6, and a test module 7. The assisted driving system controller 2 is connected to a power supply through the power isolation module 1, the radar module 3 is used to acquire a simulated radar signal emitted by the scene simulation module 4, the output end of the radar module 3 is connected to the input end of the assisted driving system controller 2, the image acquisition module 5 is used to acquire simulated image information input by the scene simulation module 4, the output end of the image acquisition module 5 is connected to the input end of the assisted driving system controller 2, the output end of the assisted driving system controller 2 is connected to the input end of the scene simulation module 4, the output end of the assisted driving system controller 2 is connected to the input end of the computer 6, the output end of the computer 6 is connected to the input end of the test module 7, and the output end of the test module 7 is connected to the input end of the computer 6.

[0030] The power supply is connected to the assisted driving system controller 2 through the power isolation module 1, the radar module 3 inputs the collected radar signal to the assisted driving system controller 2, the image acquisition module 5 inputs the collected image information to the assisted driving system controller 2, the assisted driving system controller 2 outputs control instructions to the scene simulation module 4, the assisted driving system controller 2 inputs assisted driving information to the computer 6, the computer 6 outputs test instructions to the test module 7, and the test module 7 inputs detection information to the computer 6.

[0031] The power isolation module 1 adopts a line impedance stabilization network. The radar module 3 includes a front millimeter wave radar, a left rear millimeter wave radar and a right rear millimeter wave radar. The output end of the front millimeter wave radar is connected to the input end of the auxiliary driving system controller 2 through the CAN bus, the left rear millimeter wave radar is connected to the right rear millimeter wave radar through the CAN bus, and the output end of the left rear millimeter wave radar is connected to the input end of the auxiliary driving system controller 2 through the CAN bus. The scene simulation module 4 adopts an ADS test bench. The image acquisition module 5 adopts a camera. The auxiliary driving control system controller is connected to the computer 6 through a CAN to optical fiber converter. The output end of the computer 6 is connected to the input end of the test module 7 through a power amplifier, and the output end of the test module 7 is connected to the input end of the computer 6 through a receiver. The test module 7 includes a first test antenna and a second test antenna.

[0032] The present invention provides an EMC test method for an assisted driving system:

[0033] Step 1: The assisted driving system controller 2 collects the radar signal and image information simulated by the scene simulation module 4 through the radar module 3 and the image acquisition module 5 respectively. The assisted driving system controller 2 sends a control instruction to the scene simulation module 4 to control the movement of the virtual car according to the radar signal and image information. The scene simulation module 4 feeds back the simulated radar signal to the radar module 3 according to the movement of the virtual car, and feeds back the simulated image information to the image acquisition module 5. At the same time, the assisted driving system controller 2 transmits the working data to the computer 6.

[0034] Step 2: The computer 6 sends interference signals through the first test antenna and the second test antenna respectively and receives electromagnetic signals fed back by the test system.

[0035] Step 3: The computer 6 analyzes the working data input by the assisted driving system controller 2 and the electromagnetic signals fed back by the test system collected by the first test antenna and the second test antenna respectively, to determine whether the assisted driving system controller 2 passes the test.

[0036] The following is a detailed description of an EMC testing system and method for an auxiliary driving system of the present invention.

[0037] The present invention provides an EMC test system for an assisted driving system, comprising a power isolation module 1, an assisted driving system controller 2, a radar module 3, a scene simulation module 4, an image acquisition module 5, a computer 6, and a test module 7, wherein the power isolation module 1 uses a line impedance stabilization network (LISN) to isolate power interference and provide stable impedance. In the present invention, the electromagnetic compatibility test of the assisted driving system needs to exclude external interference, and the line impedance stabilization network is a key device in the electromagnetic compatibility test.

[0038] The assisted driving system controller 2 is the unit under test. The present invention simulates radar signals and image information input into the assisted driving system controller 2, and the assisted driving system controller 2 outputs control instructions to the scene simulation module 4 to control the movement of the virtual car. The above operation simulates the car driving in a simulated environment. The present invention performs electromagnetic compatibility testing on the assisted driving system controller 2 of the car in the constructed simulated car driving system. The assisted driving system controller 2 in the embodiment of the present invention is Desay SV IPU03.

[0039] The radar module 3 includes three millimeter-wave radars, namely the front millimeter-wave radar, the left rear millimeter-wave radar and the right rear millimeter-wave radar, which are used to collect the simulated radar signals input by the scene simulation module 4 and input them into the assisted driving system controller 2 for assisted driving of the car. The front millimeter-wave radar receives the simulated radar signal in front of the virtual car, and the left rear millimeter-wave radar and the right rear millimeter-wave radar work together to receive the simulated radar signal behind the virtual car. The radar module 3 of the present invention includes three millimeter-wave radars, and the collected radar signals are more comprehensive.

[0040] The scene simulation module 4 uses an ADS test bench to send simulated radar signals to the radar module 3, send simulated image information to the image acquisition module 5, and receive the control instructions input by the assisted driving system controller 2 to control the movement of the virtual car and update the virtual scene. The scene simulation module 4 sends simulated radar signals to the radar module 3 according to the virtual scene, and sends simulated image information to the image acquisition module 5. In an embodiment of the present invention, the scene simulation module 4 generates a static scene, including traffic signs and roads; the scene simulation module 4 generates a dynamic scene including moving vehicles, pedestrians, and traffic lights. The scene simulation module 4 sends corresponding simulated radar signals and simulated image information to the radar module 3 and the image acquisition module 5 according to the driving conditions of the virtual car. The present invention tests the assisted driving system controller 2 through scene simulation, which speeds up the development efficiency of the assisted driving system controller 2 and reduces the testing cost.

[0041] The image acquisition module 5 uses a camera to acquire the simulated image information input by the scene simulation module 4 and input it into the auxiliary driving system controller 2 for auxiliary driving of the vehicle.

[0042] Computer 6 is used to control the test module 7 to send out interference signals and receive electromagnetic signals fed back by the test system, and receive the working data input by the assisted driving system controller 2. It judges the anti-interference ability of the assisted driving system controller 2 according to the working condition of the assisted driving system controller 2 after the test module 7 performs electromagnetic interference on the assisted driving system controller 2, and detects whether the electromagnetic signal sent by the assisted driving system controller 2 is too strong to affect the operation of other equipment.

[0043] The test module 7 includes a first test antenna and a second test antenna, which are used to emit electromagnetic interference to test the assisted driving system controller 2 and receive the electromagnetic signal emitted by the assisted driving system controller 2. The first test antenna is set 1 meter away from the parallel position of the middle position of the connection harness between the power isolation module 1 and the assisted driving system controller 2, and the second test antenna is set 1 meter away from the assisted driving system controller 2. The first test antenna and the second test antenna of the present invention test the assisted driving system controller 2 at different positions, respectively, which improves the accuracy of the test results.

[0044] In the present invention, the power supply is connected to the auxiliary driving system controller 2 through the line impedance stabilization network, the output end of the front millimeter wave radar is connected to the input end of the auxiliary driving system controller 2 through the CAN bus, the left rear millimeter wave radar is connected to the right rear millimeter wave radar through the CAN bus, the output end of the left rear millimeter wave radar is connected to the input end of the auxiliary driving system controller 2 through the CAN bus, the output end of the camera is connected to the input end of the auxiliary driving system controller 2, the output end of the auxiliary driving system controller 2 is connected to the input end of the ADS test bench, and the output end of the auxiliary driving system controller 2 is connected to the input end of the computer 6 through the CAN to optical fiber converter. The output end of the computer 6 is connected to the input end of the first test antenna through the power amplifier, and the output end of the first antenna is connected to the input end of the computer 6 through the receiver. The output end of the computer 6 is connected to the input end of the second test antenna through the power amplifier, and the output end of the second test antenna is connected to the input end of the computer 6 through the receiver.

[0045] An EMC test method for an auxiliary driving system of the present invention is:

[0046] The electromagnetic compatibility test of the assisted driving system controller 2 of the present invention is carried out in a darkroom. The assisted driving system controller 2 collects the radar signal and image information simulated by the scene simulation module 4 through the radar module 3 and the image acquisition module 5. The assisted driving system controller 2 sends a control instruction to the scene simulation module 4 according to the radar signal and image information to control the movement of the virtual car. The scene simulation module 4 feeds back the simulated radar signal to the radar module 3 according to the movement of the virtual car, and feeds back the simulated image information to the image acquisition module 5. Specifically, the scene simulation module 4 simulates static scenes including traffic signs and roads, and dynamic scenes including moving vehicles, pedestrians, and traffic lights. After the virtual car moves, the static scene and the dynamic scene change. The scene simulation module 4 generates radar signals and image information according to the changes in the static scene and the dynamic scene. The assisted driving system controller 2 transmits the working data to the computer 6 through the CAN to optical fiber converter. Specifically, the assisted driving system controller 2 transmits the collected radar signal and image information, and transmits the issued control instruction information to the computer 6.

[0047] The computer 6 sends interference signals and receives electromagnetic signals fed back by the test system through the first test antenna and the second test antenna respectively; wherein the first test antenna is arranged 1 meter away from the parallel position of the connection harness between the power isolation module 1 and the auxiliary driving system controller 2, and the second test antenna is arranged 1 meter away from the auxiliary driving system controller 2. It should be noted that the computer 6 is tested separately through the first test antenna and the second test antenna, and the test is first performed through the first test antenna and then through the second test antenna, and when one test antenna is working, the other test antenna does not work.

[0048] The computer 6 analyzes the working data input by the assisted driving system controller 2 and the electromagnetic signals fed back by the test system collected by the first test antenna and the second test antenna, respectively, to determine whether the assisted driving system controller 2 has passed the test. In the present invention, if the assisted driving system controller 2 cannot work normally due to electromagnetic interference when collecting information and issuing control instructions under the interference signal sent by the test system, or the electromagnetic signal sent by the assisted driving system controller 2 is too strong to affect the operation of other devices, it means that the assisted driving system controller 2 has not passed the electromagnetic compatibility test.

[0049] The present invention tests the assisted driving system controller 2 by simulating static and dynamic scenarios, thereby testing the electromagnetic compatibility characteristics of the assisted driving system controller 2 more completely and effectively.

[0050] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An EMC test system for an assisted driving system, characterized in that: It includes a power isolation module, an assisted driving system controller, a radar module, a scene simulation module, an image acquisition module, a computer, and a test module. The assisted driving system controller is connected to a power supply through the power isolation module. The radar module is used to acquire simulated radar signals emitted by the scene simulation module. The output end of the radar module is connected to the input end of the assisted driving system controller. The image acquisition module is used to acquire simulated image information input by the scene simulation module. The output end of the image acquisition module is connected to the input end of the assisted driving system controller. The output end of the assisted driving system controller is connected to the input end of the scene simulation module. The output end of the assisted driving system controller is connected to the input end of the computer. The output end of the computer is connected to the input end of the test module. The output end of the test module is connected to the input end of the computer.

2. The EMC test system for an assisted driving system according to claim 1, characterized in that: The power supply is connected to the assisted driving system controller through a power isolation module, the radar module inputs the collected radar signal to the assisted driving system controller, the image acquisition module inputs the collected image information to the assisted driving system controller, the assisted driving system controller outputs control instructions to the scene simulation module, the assisted driving system controller inputs assisted driving information to the computer, the computer outputs test instructions to the test module, and the test module inputs detection information to the computer.

3. The EMC test system for an assisted driving system according to claim 1, characterized in that: The power isolation module adopts a line impedance stabilization network.

4. The EMC test system for an assisted driving system according to claim 1, characterized in that: The radar module includes a front millimeter-wave radar, a left rear millimeter-wave radar and a right rear millimeter-wave radar. The output end of the front millimeter-wave radar is connected to the input end of the assisted driving system controller through a CAN bus, the left rear millimeter-wave radar is connected to the right rear millimeter-wave radar through a CAN bus, and the output end of the left rear millimeter-wave radar is connected to the input end of the assisted driving system controller through a CAN bus.

5. The EMC test system for an assisted driving system according to claim 1, characterized in that: The scenario simulation module adopts the ADS test bench.

6. The EMC test system for an assisted driving system according to claim 1, characterized in that: The image acquisition module adopts a camera.

7. The EMC test system for an assisted driving system according to claim 1, characterized in that: The auxiliary driving control system controller is connected to a computer via a CAN to optical fiber converter.

8. The EMC test system for an assisted driving system according to claim 1, characterized in that: The output end of the computer is connected to the input end of the test module through a power amplifier, and the output end of the test module is connected to the input end of the computer through a receiver.

9. The EMC test system for an assisted driving system according to claim 1, characterized in that: The test module includes a first test antenna and a second test antenna.

10. An EMC test method for an assisted driving system according to any one of claims 1 to 9, characterized in that: Step 1: The assisted driving system controller collects the radar signal and image information simulated by the scene simulation module through the radar module and the image acquisition module respectively. The assisted driving system controller sends a control instruction to the scene simulation module to control the movement of the virtual car according to the radar signal and image information. The scene simulation module feeds back the simulated radar signal to the radar module according to the movement of the virtual car, and feeds back the simulated image information to the image acquisition module. At the same time, the assisted driving system controller transmits the working data to the computer; Step 2: The computer sends interference signals through the first test antenna and the second test antenna respectively and receives electromagnetic signals fed back by the test system; Step 3: The computer analyzes the working data input by the assisted driving system controller and the electromagnetic signals fed back by the test system collected by the first test antenna and the second test antenna respectively, to determine whether the assisted driving system controller passes the test.

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