A detection device for automobile lamp domain controller and control method thereof

Abstract

The present invention belongs to the technical field of automobile lamps, and specifically relates to an automobile lamp domain controller detection device and a control method thereof. The automobile lamp domain controller detection device and the control method thereof include: a programmable power supply, an industrial computer, an industrial touch screen display, a digital input and output board, a CAN communication board, a LIN communication board, a programmable multi-channel resistor matrix board and a UART board; wherein the programmable power supply supplies power to the industrial computer, the industrial touch screen display, the digital input and output board, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board and the UART board; the automobile lamp domain controller detection device and the control method thereof have the effect of reducing the instability risk of load lamps and improving the test stability of the detection device.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile lamp control detection, and in particular relates to an automobile lamp domain controller detection device and a control method thereof. Background Art

[0002] As more and more distributed ECUs are used on car bodies, the number exceeds one hundred. Distributed ECUs have weaknesses, such as complex logic management, complex wiring harness design, and high costs. Manufacturers such as Bosch, Delphi, and Continental have proposed upgrading the automotive electrical architecture from distributed to centralized. Bosch divides the electronic controller into five domains: power, chassis, cockpit, autonomous driving, and body. In the past two years, the automotive lighting industry has also introduced automotive lighting domain controllers due to platform requirements. Through standard universal domain controllers, equipped with different software, the customization requirements of different OEMs can be met, thereby reducing project development costs and cycles, and improving product profitability.

[0003] The lighting domain controller is divided into three domains: front, rear, and interior. One lighting domain controller can control multiple vehicle lights. Taking the lighting rear domain controller as an example, the four sets of taillights, rear 1 left, rear 1 right, rear 2 left, and rear 2 right, that match the domain controller need to be connected to the lighting domain controller as real loads for testing. The test is very complicated. The real load is large in size, has many wiring harness connections, and the lamps are easily damaged, which adds uncertainty to the test. There are also cases where the lamp panels are not manufactured in this lamp factory, and the real load lamp panels need to be customized separately, which increases the difficulty of testing and the development cycle. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile lamp domain controller detection device and a control method thereof, so as to solve the technical problems that the test is very complicated, the actual load volume is large, the wiring harness connections are many, and the lamps are easily damaged, which adds uncertainty to the test, so as to reduce the instability risk of the load lamps and improve the test stability of the detection device.

[0005] In order to solve the above technical problems, the present invention provides a detection device for a domain controller of an automobile lamp, comprising:

[0006] Programmable power supply, industrial computer, industrial touch screen display, digital input and output board, CAN communication board, LIN communication board, programmable multi-channel resistor matrix board and UART board; wherein the programmable power supply supplies power to the industrial computer, industrial touch screen display, digital input and output board, CAN communication board, LIN communication board, programmable multi-channel resistor matrix board and UART board;

[0007] The digital input and output board, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board and the UART board are electrically connected to the vehicle light domain controller to detect the vehicle light domain controller;

[0008] The industrial computer is electrically connected to a programmable power supply, an industrial touch screen display, a CAN communication board, a LIN communication board, a programmable multi-channel resistor matrix board, a multi-channel programmable electronic load meter, and a UART board;

[0009] The automated testing software on the industrial computer simulates the vehicle light domain controller testing environment and the collection test of the vehicle light domain controller output signal through the program controller of the instrument board.

[0010] Furthermore, the industrial computer runs automated testing software to control a multi-channel programmable electronic load instrument;

[0011] The multi-channel programmable electronic load has one or more modes of a constant current load mode, a constant voltage load mode or a constant power load mode;

[0012] The simulated vehicle light domain controller test requires the vehicle light LED panel load condition requirements.

[0013] Beneficial effects of the present invention:

[0014] 1. By using programmable virtual instrument solutions to replace real lamp loads, the wiring harness and tooling design can be simplified, the risk of instability of load lamps can be reduced, and the test stability of the detection device can be improved.

[0015] 2. Use programmable virtual instrument solutions to replace real lamp loads, without the need to regularly replace loads. Use real load lamps to reduce the maintenance workload of the detection device. At the same time, due to individual differences in real loads, the use of virtual instrument solutions can improve the accuracy and repeatability of the detection device.

[0016] 3. By using programmable virtual instrument solutions to replace real lamp loads, the versatility, compatibility and multi-model switching test requirements of the detection device can be improved.

[0017] 4. Since each model of controller test requires a different real load, the real load involves different LED quantity, power, BIN resistance, NTC resistance, etc., so different models of controller tests need to match corresponding multiple real loads. However, through the virtual load solution, using programmable instruments, boards, and resistance load instruments, the real load state of the same function and multiple models can be simulated through software control for testing. This reflects the advanced nature of the control method, and can meet the testing needs of multiple different models of controllers with one test solution and one test equipment, thereby improving the versatility, compatibility, and multi-model switching test needs of the detection device.

[0018] Another object of the present invention is to provide a control method for an automobile lamp domain controller detection device, comprising:

[0019] As the above-mentioned automobile lamp domain controller detection device;

[0020] After power-on initialization, manually select the configuration program to be tested by the lamp domain controller;

[0021] After the system is loaded successfully, the domain controller of the lamp to be tested is placed on the test workbench manually, and the start button is pressed manually. The probe of the detection device is automatically inserted into the PIN pin of the lamp domain controller, and the system performs the test process according to the pre-set settings;

[0022] Step 1: The industrial computer runs the program to control the digital input and output board and the relay to switch the power supply and signal required for the headlight domain controller detection;

[0023] Step 2: The industrial computer runs the program, communicates with the vehicle light domain controller through the CAN communication board, and uses the UDS diagnostic service to read the above three voltage states to ensure that the message replies for the three states of undervoltage, normal, and high voltage are met;

[0024] Step 3: The industrial computer runs the program to control the programmable multi-channel resistor matrix board. The 8 channels output the set resistance values. The headlight domain controller identifies the voltages at the corresponding points of the 8 resistors, communicates with the headlight domain controller through the CAN communication board, and uses the UDS diagnostic service to read the ADC voltage sampling values ​​of the 8 points.

[0025] Step 4: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant voltage (CV) mode and set the corresponding voltage; communicate with the headlight domain controller through the CAN communication board and UDS diagnostic service to control the headlight domain controller to output constant current (CC) mode and set a constant current;

[0026] The controller can program a multi-channel electronic load meter to read back the current and voltage values ​​of each channel;

[0027] Step 5: Repeat the above step 4 once, control the vehicle light domain controller to output different current values ​​in constant current (CC) mode, and perform testing;

[0028] Step 6: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CC) mode and set the corresponding current;

[0029] Communicate with the headlight domain controller through the CAN communication board and UDS diagnostic service to control the headlight domain controller to output constant voltage (CV) mode and set a constant voltage; the controller can program a multi-channel electronic load to read back the current and voltage values ​​of each channel;

[0030] Step 7: Repeat the above step 6 once, control the vehicle light domain controller to output different voltage values ​​in constant voltage (CV) mode, and perform testing;

[0031] Step 8: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CV) mode and set the corresponding current; communicate with the vehicle light domain controller through the CAN communication board and the UDS diagnostic service to control the high-side switch of the vehicle light domain controller to turn on; the controller programmable multi-channel electronic load to read back the current and voltage values ​​of each channel;

[0032] Step 9: The industrial computer runs the program, communicates with the headlight domain controller through the CAN communication board, UDS diagnostic service, and controls the UART output of the headlight domain controller;

[0033] Read and output UART serial port messages through the UART board;

[0034] Step 10: After the measurement is completed, the detection information is compared, the OKNG signal indicator light is output, the detection data is stored in the database, and the results are displayed on the industrial touch display.

[0035] Furthermore, in step 2: the programmable power supply is controlled to output 7V, 13.5V, and 18V voltages.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a principle block diagram of the automobile lamp domain controller detection device of the present invention;

[0039] Figure 2 It is a structural block diagram of an industrial computer of the automobile lamp domain controller detection device and control method thereof of the present invention;

[0040] Figure 3 It is a structural block diagram of the industrial computer of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example:

[0043] like Figures 1 to 3 As shown, a vehicle lamp domain controller detection device includes: a programmable power supply, an industrial computer, an industrial touch screen display, a digital input and output board, a CAN communication board, a LIN communication board, a programmable multi-channel resistor matrix board and a UART board; wherein the programmable power supply supplies power to the industrial computer, the industrial touch screen display, the digital input and output board, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board and the UART board; the digital input and output board, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board and the UART board are electrically connected to the vehicle lamp domain controller to detect the vehicle lamp domain controller; the industrial computer is electrically connected to the programmable power supply, the industrial touch screen display, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board, the multi-channel programmable electronic load meter and the UART board; the automated testing software on the industrial computer simulates the vehicle lamp domain controller test environment and the collection test of the vehicle lamp domain controller output signal through the program controller and the above-mentioned instrument boards.

[0044] Among them, the automated test software is run on an industrial computer to control a multi-channel programmable electronic load meter; the multi-channel programmable electronic load meter has one or more modes of constant current load mode, constant voltage load mode or constant power load mode; and the load condition requirements of the headlight LED light board required for the headlight domain controller test are simulated.

[0045] For the convenience of use, the industrial computer is an industrial tablet computer 4 in this embodiment, which is convenient for users to move around.

[0046] The industrial tablet computer 4 is connected to the programmable power supply 1, and the programmable power supply 1 supplies power to the industrial tablet computer 4. The industrial tablet computer 4 is also connected to the first color industrial camera 2, the black and white industrial camera 3 and the digital input and output board 5. For better lighting, the industrial tablet computer 4 is also connected to a lamp 6.

[0047] In order to better monitor multiple vehicle light domain controllers through the industrial tablet computer 4 , the industrial tablet computer 4 is connected to a second color industrial camera 7 .

[0048] In summary: By using a programmable virtual instrument solution to replace the real lamp load, the wiring harness and tooling design can be simplified, the risk of instability of the load lamp can be reduced, and the testing stability of the detection device can be improved. By using a programmable virtual instrument solution to replace the real lamp load, there is no need to regularly change the load and use the real load lamp, which reduces the maintenance workload of the detection device. At the same time, due to individual differences in real loads, the use of virtual instrument solutions can improve the accuracy and repeatability of the detection device. By using a programmable virtual instrument solution to replace the real lamp load, the versatility, compatibility and multi-model switching test requirements of the detection device can be improved.

[0049] Embodiment 2: A control method for an automobile lamp domain controller detection device, comprising: an automobile lamp domain controller detection device as described above; after power-on initialization, manually selecting a configuration program for the lamp domain controller to be detected; after the system is successfully loaded, manually placing the lamp domain controller to be detected on a detection workbench, manually pressing a two-handed start button, and the detection device probe automatically plugs into the lamp domain controller PIN pin, and the system performs the test process according to the pre-set settings.

[0050] Step 1: The industrial computer runs the program to control the digital input and output board and the relay to switch the power supply and signal required for the headlight domain controller detection;

[0051] Step 2: The industrial computer runs the program, communicates with the headlight domain controller through the CAN communication board, and uses the UDS diagnostic service to read the message responses under the above three voltage states to ensure whether the three states of undervoltage, normal, and high voltage are met; among them, the programmable power supply is controlled to output 7V, 13.5V, and 18V voltages.

[0052] Step 3: The industrial computer runs the program to control the programmable multi-channel resistor matrix board. The 8 channels output the set resistance values. The headlight domain controller identifies the voltages at the corresponding points of the 8 resistors, communicates with the headlight domain controller through the CAN communication board, and uses the UDS diagnostic service to read the ADC voltage sampling values ​​of the 8 points.

[0053] Step 4: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant voltage (CV) mode and set the corresponding voltage; communicate with the headlight domain controller through the CAN communication board and UDS diagnostic service to control the headlight domain controller to output constant current (CC) mode and set a constant current;

[0054] The controller can program a multi-channel electronic load meter to read back the current and voltage values ​​of each channel;

[0055] Step 5: Repeat the above step 4 once, control the vehicle light domain controller to output different current values ​​in constant current (CC) mode, and perform testing;

[0056] Step 6: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CC) mode and set the corresponding current;

[0057] Communicate with the headlight domain controller through the CAN communication board and UDS diagnostic service to control the headlight domain controller to output constant voltage (CV) mode and set a constant voltage; the controller can program a multi-channel electronic load to read back the current and voltage values ​​of each channel;

[0058] Step 7: Repeat the above step 6 once, control the vehicle light domain controller to output different voltage values ​​in constant voltage (CV) mode, and perform testing;

[0059] Step 8: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CV) mode and set the corresponding current; communicate with the vehicle light domain controller through the CAN communication board and the UDS diagnostic service to control the high-side switch of the vehicle light domain controller to turn on; the controller programmable multi-channel electronic load to read back the current and voltage values ​​of each channel;

[0060] Step 9: The industrial computer runs the program, communicates with the headlight domain controller through the CAN communication board, UDS diagnostic service, and controls the UART output of the headlight domain controller;

[0061] Read and output UART serial port messages through the UART board;

[0062] Step 10: After the measurement is completed, the detection information is compared, the OKNG signal indicator light is output, the detection data is stored in the database, and the results are displayed on the industrial touch display.

[0063] Among them, by looping the operation process in step four through step five, the output of different current values ​​of the constant current (CC) mode of the vehicle light domain controller can be better controlled, thereby improving the operation stability.

[0064] Beneficial effects: Since each model of controller testing requires a different real load, the real load involves different LED numbers, power, BIN resistance, NTC resistance, etc., so different models of controller testing need to match corresponding multiple real loads. However, through the virtual load solution, using programmable instruments, boards, and resistance load instruments, it is possible to simulate the real load state of the same function and multiple models and specifications through software control for testing. This reflects the advanced nature of the control method, and can meet the testing needs of multiple different models of controllers with one test solution and one test device, thereby improving the versatility, compatibility, and multi-model switching test needs of the detection device.

[0065] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0066] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0068] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A detection device for a domain controller of an automobile lamp, characterized in that: include: Programmable power supply, industrial computer, industrial touch screen display, digital input and output board, CAN communication board, LIN communication board, programmable multi-channel resistor matrix board and UART board; wherein the programmable power supply supplies power to the industrial computer, industrial touch screen display, digital input and output board, CAN communication board, LIN communication board, programmable multi-channel resistor matrix board and UART board; The digital input and output board, the CAN communication board, the LIN communication board, the programmable multi-channel resistor matrix board and the UART board are electrically connected to the vehicle light domain controller to detect the vehicle light domain controller; The industrial computer is electrically connected to a programmable power supply, an industrial touch screen display, a CAN communication board, a LIN communication board, a programmable multi-channel resistor matrix board, a multi-channel programmable electronic load meter, and a UART board; The automated testing software on the industrial computer controls the board through a program controller to simulate the vehicle light domain controller testing environment and the collection test of the vehicle light domain controller output signal; The industrial computer runs automated testing software to control a multi-channel programmable electronic load instrument; The multi-channel programmable electronic load has one or more modes of a constant current load mode, a constant voltage load mode or a constant power load mode; The simulated vehicle light domain controller test requires the vehicle light LED panel load condition requirements.

2. A control method for a vehicle lamp domain controller detection device, characterized in that: include The automotive lighting domain controller detection device as described in claim 1 above; After power-on initialization, manually select the configuration program to be tested by the lamp domain controller; After the system is loaded successfully, the domain controller of the lamp to be tested is placed on the test workbench manually, and the start button is pressed manually. The probe of the detection device is automatically inserted into the PIN pin of the lamp domain controller, and the system performs the test process according to the pre-set settings; Step 1: The industrial computer runs the program to control the digital input and output board and the relay to switch the power supply and signal required for the headlight domain controller detection; Step 2: The industrial computer runs the program, communicates with the headlight domain controller through the CAN communication board, and uses the UDS diagnostic service to read the three voltage states of controlling the programmable power supply to output 7V, 13.5V, and 18V voltages to ensure that the message replies of the three states of undervoltage, normal, and high voltage are met; Step 3: The industrial computer runs the program to control the programmable multi-channel resistor matrix board. The 8 channels output the set resistance values. The headlight domain controller identifies the voltages at the corresponding points of the 8 resistors, communicates with the headlight domain controller through the CAN communication board, and uses the UDS diagnostic service to read the ADC voltage sampling values ​​of the 8 points. Step 4: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant voltage (CV) mode and set the corresponding voltage; communicate with the headlight domain controller through the CAN communication board and UDS diagnostic service to control the headlight domain controller to output constant current (CC) mode and set a constant current; The controller can program a multi-channel electronic load meter to read back the current and voltage values ​​of each channel; Step 5: Repeat the above step 4 once, control the vehicle light domain controller to output different current values ​​in constant current (CC) mode, and perform testing; Step 6: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CC) mode and set the corresponding current; Communicate with the vehicle lighting domain controller through the CAN communication board and UDS diagnostic service, control the vehicle lighting domain controller to output constant voltage (CV) mode, and set a constant voltage; the controller can program a multi-channel electronic load meter to read back the current and voltage values ​​of each channel; Step 7: Repeat the above step 6 once, control the vehicle light domain controller to output different voltage values ​​in constant voltage (CV) mode, and perform the test; Step 8: The industrial computer runs the program to control the programmable multi-channel electronic load to start in constant current (CV) mode and set the corresponding current; communicate with the vehicle light domain controller through the CAN communication board and UDS diagnostic service to control the high-side switch of the vehicle light domain controller to turn on; The controller can program a multi-channel electronic load meter to read back the current and voltage values ​​of each channel; Step 9: The industrial computer runs the program, communicates with the headlight domain controller through the CAN communication board, UDS diagnostic service, and controls the UART output of the headlight domain controller; Read and output UART serial port messages through the UART board; Step 10: After the measurement is completed, the detection information is compared, the OKNG signal indicator light is output, the detection data is stored in the database, and the results are displayed on the industrial touch display.

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