Can bus test system and can bus test method based on uds

Abstract

The application relates to the field of testing technology, and provides a UDS-based CAN bus test system and a CAN bus test method. The ECU to be tested is connected to the PCAN hardware through the CAN bus, and the PCAN hardware is used to connect the ECU to be tested to an external test device through USB. , start the ECU to be tested, and test the working performance of the ECU to be tested through the external testing device. Through the above method, the application can avoid the use of high-cost German Vector software with the canoe hardware test system, effectively reduce the test cost, and the test effect is accurate, the success rate is high, the test system is simple to set up, easy to operate and easy to understand, and at the same time it is guaranteed to be able to achieve It has the same test function as the German Vector software and canoe hardware test system to ensure the working performance of the product.

Description

technical field [0001] The present application relates to the technical field of testing, in particular to a UDS-based CAN bus test system and a CAN bus test method using the UDS-based CAN bus test system. Background technique [0002] Based on the factors of environment, energy and technological development, new energy vehicles are the current and future trend of automobile development, among which pure electric vehicles are the mainstream products. In order to adapt to the needs of the times and customers, there are more and more controllers (ECU, Electronic Control Unit, electronic control unit) on new energy vehicles. In the process of producing or using vehicles, it is usually necessary to control multiple controllers in the vehicle carry out testing. [0003] In electric vehicles, ECU is an important core part, and its safe operation is the guarantee for the normal driving of electric vehicles. At present, the method of testing ECU adopts the method of prototype vehi...

AI Technical Summary

Problems solved by technology

Testing the ECU by means of prototype testing requires the assistance of the testers, which wastes the time and energy of the testers, and is not safe

If there is a problem during the on-site sample vehicle debugging, the control strategy program set in the ECU cannot be changed or / and refreshed in time

[0004] In addition, the process of the CAN bus controller test method based on UDS (Unified diagnostic Services) is as follows: the development of ECU diagnostic module needs to realize the secure access service and the security authentication algorithm involved. In order to verify the correctness of the development, The current traditional test method is to use German Vector software to test with canoe hardware (vector hardware). Among them, Vector is the world's leading supplier of bus development tools, network node test verification tools and embedded software components. Provide a series of powerful software and hardware tools and source codes in the fields of design, modeling, simulation, analysis, testing, and ECU development, testing, calibration, and diagnosis, while Vector software and Canoe hardware are relatively expensive, generally costing tens of thousands of yuan , when a large number of projects require multiple tools, the cost will increase, and if the number of tools is not enough, it will affect the work efficiency

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