Automatic testing system and method based on Linux

Abstract

The invention discloses an automatic testing system and method based on Linux. The system comprises a CAN module, a serial port module, decoding control module and an input and output module, whereinthe decoding control module is connected with the input and output module; the CAN module is used for sending a CAN instruction to the to-be-tested product according to the CAN communication protocolcontent, and receiving a CAN data frame fedback by the to-be-tested product for analysis so as to detect the communication of the CAN bus of the to-be-tested product; the serial port module is used for detecting the serial port bus of the to-be-tested product; the decoding control module is used for decoding the address bus and the control signal, so that the output of the digital quantity is realized and the decoding control module can be used for detecting the input quantity; the input and output module is used for detecting the switching signals of the testing system, and controlling the power distribution of the to-be-tested product, monitoring and collecting a power supply voltage signal of the to-be-tested product, and giving a prompt alarm when the fault is detected. The method is based on the system, can be compatible with different test requirements of various products, and can realize visualization of product detection, conduct positioning on product fault points, and trace back the test data.

Description

technical field [0001] The invention belongs to the technical field of automatic testing, and more specifically relates to a Linux-based automatic testing system and method. Background technique [0002] With the development of automatic testing technology, more and more automatic testing devices are reused in product testing. Products need to be tested before leaving the factory. A portable and light test system automatically detects the product, and is equipped with a corresponding display window to display the test information in real time, and can automatically save the data during the test, which is convenient for viewing and analyzing the test data. The fault point can be specifically located at any time, and the function can meet the various communication requirements of the product, and the user can set the parameters of the product to meet the individual needs of different users. [0003] At present, the test system for products is generally based on DSP (Digital S...

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Problems solved by technology

[0003] At present, the test system for products is generally based on DSP (Digital Signal Processing, data signal processor) embedded system, the program is built in the DSP processor, the hardware environment is not convenient to be equipped with a display screen, it is difficult to modify and upgrade the program, and it cannot be seen intuitively The test information can only be monitored and read by the emulator, which has a single function and only self-tests the serial communication of the product, and the test system has a large built-in power supply, which is bulky and inconvenient to carry for testing. Inefficient testing

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