ECU offline test device and method

Abstract

The invention relates to an ECU offline test device and method. An upper computer is in communication connection with a test device through a USB-CAN, the upper computer is in communication connection with a to-be-tested ECU through the USB-CAN, and the upper computer sends a test instruction and receives information returned by the test device and the to-be-tested ECU; the test equipment is in communication connection with the ECU to be tested through the wire harness, and the test equipment converts the test instruction into an instruction signal and sends the instruction signal to the ECU to be tested; when the upper computer sends a signal acquisition instruction to the ECU to be tested, the ECU to be tested outputs information to the upper computer; and when the upper computer sends a signal acquisition instruction to the test equipment, the test equipment receives the information of the ECU to be tested and uploads the information to the upper computer. Compared with the prior art, the upper computer is connected with the to-be-tested ECU and the test equipment, the test equipment is connected with the to-be-tested ECU, the to-be-tested ECU is driven through a function card bottom layer, the signal input end and the signal output end of the to-be-tested ECU are tested, and the test system has the advantages of being high in signal accuracy, high in reliability and accurate in test.

Description

technical field [0001] The invention relates to the technical field of ECU testing, in particular to an ECU off-line testing device and method. Background technique [0002] With the rapid development of the domestic automobile industry and the improvement of automobile electronic technology, more and more new technologies are applied to automobiles, such as ACC, FSI, ESP and other technologies, although the richness of automobile use has been greatly improved, but on the other hand It also puts forward higher requirements for the development and testing of automotive electronic control units, and increases the difficulty of fault detection and judgment. In the entire automotive electronic control system, there are dozens or even hundreds of ECUs (Electronic Control Units), among which the engine ECU is the most important and critical part of the automotive electronic control system, which affects the power and safety of the entire vehicle. sex etc. Therefore, the off-line...

AI Technical Summary

Problems solved by technology

At present, automobile manufacturers often use the testing equipment developed by foreign automotive electronics to test ECUs. However, there are few types of ECU tests, lack of versatility, and the price is expensive. The professional knowledge of production line workers is high, and small companies do not use them.

Images