Complete vehicle EMC test problem troubleshooting system

Abstract

The utility model discloses a whole vehicle EMC test problem checking system, and belongs to the field of vehicle test. The system comprises an EMC test controller, a component risk memory and a to-be-tested component, and the EMC test controller is connected with the component risk memory and the to-be-tested component. The part risk memory is used for storing a preset part risk level and providing the preset part risk level to the EMC test controller for calling; the EMC test controller is used for sequentially sending corresponding test signals to the corresponding to-be-tested parts according to the preset part risk levels; the to-be-tested part is used for executing an EMC test according to the received test signal, and the test result is fed back to the EMC test controller. Through the system provided by the invention, when the EMC test is not passed, the user has more directional and targeted troubleshooting, so that the troubleshooting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the vehicle test field, concretely, the utility model relates to a whole vehicle EMC test problem troubleshooting system. BACKGROUND

[0002] In order to ensure the safety of whole vehicle electrical equipment, when carrying out vehicle test, often need to carry out whole vehicle electromagnetic compatibility (EMC) test. Comparative document (CN118444048A) discloses a kind of electromagnetic compatibility experiment monitoring system, including shielded room, for providing closed test environment for electromagnetic compatibility experiment;Test product module, for simulating the actual working state of test product;Artificial power network, for power supply to the test product module;Isolation transformer, for connecting power grid and the artificial power network and carrying out bidirectional electromagnetic interference isolation;EMC measurement module, for measuring the electromagnetic interference radiated / conducted by the test product and measuring the voltage / current variation of the test product;Test environment control module, for controlling the working temperature, humidity and atmospheric pressure parameters of the test product module;The electromagnetic compatibility experiment monitoring system, perfects the internal layout of test product to simulate actual working state, and comprehensively considers the parameter debugging of external working environment of test product to improve the accuracy of electromagnetic compatibility experiment.

[0003] But automobile in doing whole vehicle electromagnetic compatibility (EMC) test can meet the situation of test failure, i.e. radiation emission type test test data exceeds the requirement of specified limit value, or abnormal vehicle electrical working condition appears in the process of anti-interference type test.If it is just contact this industry personnel or the engineer of insufficient experience, when facing test failure, often do not know from where to start troubleshooting problem, and have no clue for rectification measures.

[0004] When whole vehicle electromagnetic compatibility (EMC) test fails, when troubleshooting problem point, often adopt the method of closing electrical components in vehicle one by one, and retesting vehicle. Although this way can also troubleshoot problem point, but directionality, pertinence is not strong, cause cost in time, energy is larger, not conducive to the rapid progress of project. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the deficiency of prior art, proposes a kind of whole vehicle EMC test problem troubleshooting system, to reach the following purposes: by the system of the present application, when EMC test fails, more directionality and pertinence are investigated, to speed up the troubleshooting efficiency.

[0006] In order to realize the above-mentioned purpose, the technical scheme that the utility model adopts is as follows:

[0007] The system comprises an EMC test controller, a component risk storage, and a component to be tested.

[0008] Preferably, the component risk storage is configured to store preset component risk levels and provide the EMC test controller with the preset component risk levels.

[0009] The EMC test controller is configured to sequentially send corresponding test signals to corresponding components to be tested according to the preset component risk levels.

[0010] The component to be tested is configured to perform EMC testing according to the received test signals, and the test results are fed back to the EMC test controller.

[0011] Preferably, the component to be tested comprises an electric drive system, an on-board charger, an inverter, a power converter, a vehicle controller, a motor controller, a battery management system, an automobile electronic control unit, a high-voltage wire harness, and a sensor.

[0012] Preferably, the system further comprises a display connected to the EMC test controller and configured to display the test results.

[0013] Preferably, the system further comprises an audible and visual reminding device connected to the EMC test controller and configured to remind a user through sound and light according to the test results.

[0014] The technical effect of the utility model is that the component risk storage is used to pre-classify and store the risk levels of EMC problems of each component, so that the system can automatically perform EMC testing and troubleshooting of corresponding components according to the corresponding risk levels, the problems can be found more efficiently and targetedly, the time and labor costs are greatly saved, and the testing and rectification efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural diagram of a vehicle EMC test problem troubleshooting system according to an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The specific embodiments of the utility model will be further described in detail below with reference to the drawings, and the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical scheme of the utility model, and to help them implement the utility model. In order to make the technical scheme of the utility model clearer, the utility model is explained and described by the following embodiments.

[0017] In the prior art, when the whole vehicle electromagnetic compatibility test fails, it is often difficult to accurately locate the specific parts. In the face of complex and diverse parts of the whole vehicle, it is obvious that a large amount of manpower, material resources and time will be spent for inexperienced novice testers without rules and plans to check. In order to overcome the above problems and improve the efficiency of checking, the present application provides a whole vehicle EMC test problem checking system.

[0018] The embodiment provides a whole vehicle EMC test problem checking system, as shown in the figure, the system comprises an EMC test controller, a part risk storage, and a part to be tested, wherein the EMC test controller is connected with the part risk storage and the part to be tested respectively. Figure 1 In the embodiment, the part to be tested includes an electric drive system, an on-board charger, an inverter, a power converter, a whole vehicle controller, a motor controller, a battery management system, an automobile electronic control unit, a high-voltage wire harness, a sensor, etc., which are connected with the EMC test controller respectively.

[0019] Further, in order to improve the signal transmission rate and stability between the EMC test controller and the part to be tested to ensure the efficiency of EMC test checking, the EMC test controller of the embodiment is connected with each part to be tested through a CAN bus, which has the advantages of high signal transmission rate and high stability. At the same time, the system can also expand peripheral devices based on the CAN bus, such as devices for signal monitoring and diagnosis.

[0020] Specifically, the part risk storage of the embodiment is used to store the preset part risk level and provide it for the EMC test controller to call. The part risk storage of the embodiment can input the part risk level in advance according to the work experience of artificial, and support the adjustment of the stored part risk level, so the part risk storage of the embodiment can adopt a read-write memory, such as RAM (random access memory) and DRAM (dynamic random access memory) etc.

[0021] In the embodiment, the electric drive system, the on-board charger, the inverter, and the power converter can be set as a first risk level, and need to be tested first; the vehicle controller, the motor controller, the battery management system, and the automobile electronic control unit can be set as a second risk level, and need to be tested after the first risk level parts are tested; the high-voltage wire harness and the sensor can be set as a third risk level, and need to be tested after the second risk level parts are tested. The embodiment is only one preferred embodiment of the application, and the application is not limited thereto. In the specific implementation, the corresponding risk levels and the corresponding parts can be flexibly configured according to the actual situation. The system can automatically test the corresponding parts according to the corresponding risk levels, can find the problems more efficiently and targetedly, greatly saves the time, manpower, and other costs, and greatly improves the test and rectification efficiency.

[0022] The EMC test controller of the embodiment is used for sending the corresponding test signals to the corresponding parts to be tested according to the preset risk levels of the parts. In the embodiment, the EMC test controller can adopt a single-chip microcomputer, a PLC (programmable logic controller), a CPU (central processing unit), or the like, to further improve the efficiency of the EMC test by means of the high-efficiency data processing capability of the controller. In the specific implementation, the controller can also be flexibly selected according to the actual situation. In the embodiment, the parts to be tested are used for performing the EMC test according to the received test signals, and the test results can be fed back to the EMC test controller.

[0023] The system of the embodiment further includes a display connected with the EMC test controller, and used for displaying the test results. According to the test feedback results of the parts to be tested, the EMC test controller can process the test feedback results and send them to the display for display, to facilitate the user to identify the EMC problem parts in time, and to rectify the problem parts.

[0024] Further, to ensure the reminding effect for the user, the system of the embodiment further includes an audible and visual reminding device connected with the EMC test controller, and used for reminding the user by means of sound and light according to the test results. The audible and visual reminding device can adopt an indicator light, a buzzer, or the like, and is uniformly configured to remind the user by means of different light or sound according to different test results.

[0025] The application is described above with reference to the drawings. Obviously, the specific implementation of the application is not limited to the above-described manner. Any non-essential improvement, or direct application of the above-described concept and technical solution of the application to other occasions, is within the protection scope of the application.

Claims

1. A whole vehicle EMC test problem troubleshooting system, characterized by: The system comprises an EMC test controller, a component risk storage, and a component to be tested, wherein the EMC test controller is connected with the component risk storage and the component to be tested respectively.

2. The whole vehicle EMC test problem troubleshooting system according to claim 1, characterized in that: The component risk storage is configured to store preset component risk levels and provide the EMC test controller with the preset component risk levels. The EMC test controller is configured to send corresponding test signals to corresponding components to be tested according to the preset component risk levels. The component to be tested is configured to perform EMC tests according to the received test signals, and the test results are fed back to the EMC test controller.

3. The whole vehicle EMC test problem troubleshooting system according to claim 2, characterized in that: The component to be tested comprises an electric drive system, an on-board charger, an inverter, a power converter, a vehicle controller, a motor controller, a battery management system, an automobile electronic control unit, a high-voltage wire harness, and a sensor.

4. The whole vehicle EMC test problem troubleshooting system according to claim 2 or 3, characterized in that: The EMC test controller is connected with the component to be tested through a CAN bus.

5. The vehicle EMC test problem troubleshooting system according to claim 2, characterized in that: The system further comprises a display connected with the EMC test controller and configured to display test results.

6. The vehicle EMC test problem troubleshooting system according to claim 2, characterized in that: The system further comprises an audible and light reminder device connected with the EMC test controller and configured to remind a user through sound and light according to test results.

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