System and method for automatically testing I/O pin of CAN bus control module

Abstract

The invention discloses a system and a method for automatically testing the I / O pin of a CAN bus control module. The system comprises a configuration unit, an input unit, an output detection unit and a comparison unit. The method comprises the following steps that: step one: the control logic of the I / O pin of the CAN bus control module is configured; step two: the I / O pin inputs signals; step three: the output signals of the CAN bus control module are detected; step four: the preset output signals corresponding to the input signals are searched from the configuration unit according to the control logic and are compared with the output signals, step five is conducted if the preset output signals are same as the output signals, and step six is conducted if the preset output signals are different from the output signals; step five: information indicating that the I / O pin is test to be correct is output and the process goes to step seven; step six: information indicating that the I / O pin is test to be incorrect is output; and step seven: the testing process is over. By adopting the system and the method, the full-automatic standardized test of the CAN module is realized.

Description

technical field [0001] The invention relates to a system and a method for automatically testing the I / O pins of a CAN bus control module, in particular to a system and a method for automatically testing the I / O pins of a CAN bus control module. Background technique [0002] Due to its outstanding reliability, real-time and flexibility, the CAN (Controller Area Network) bus has become one of the main industry standards in the world's automobile manufacturing industry, representing the mainstream development trend of automotive electronic control networks. The use of CAN bus products in automobiles can simplify the line connection of automotive electrical and electronic equipment, improve the reliability of electrical and electronic systems, realize information sharing between electrical and electronic equipment, and provide convenient conditions for the expansion of electrical functions of the vehicle. [0003] my country started relatively late in the field of automotive ele...

AI Technical Summary

Problems solved by technology

[0005] 1. It takes a long time and the test efficiency is low;

[0006] 2. The versatility is poor. When the relationship between the input control logic and output control logic of the CAN module changes, it is necessary to modify the hardware and single-chip microcomputer program of the test bench;

[0007] 3. There are individual operating errors, which is not conducive to the standardization of the inspection process;

[0008] 4. Increased human input and economic costs;

[0009] 5. Increase the labor level of the inspector, and also damage the inspector's vision to a certain extent;

[0010] 6. It is not conducive to product failure statistics and tracking

Images