Fault simulation and test system

Abstract

The invention relates to a fault simulation and test system and belongs to the automobile electronic exploitation and test technology field. Automatic simulation and automatic diagnosis on multiple types of faults of each signal path can be realized through setting a host computer and the corresponding fault simulation and diagnosis equipment and further through utilizing preset fault simulation and diagnosis data, an external communication request can be further realized through utilizing a CAN communication box to carry out fault simulation and diagnosis on a detected ECU, so automatic fault simulation and automatic fault diagnosis can be realized, integration with a third-party test system can be conveniently realized, artificial test workload and professional level requirements for testers can be reduced, and thereby fault simulation and diagnosis cost is greatly reduced, and a tool utilization rate and test accuracy can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of automotive electronics development and testing, in particular to a fault simulation and testing system. Background technique [0002] At present, because the electronic control unit (Electronic Control Unit, referred to as ECU) multifunctional system for fault simulation and testing can simulate and test various faults of ECU, it is widely used in the development process of ECU to effectively verify the design Whether the products that come out meet the previous design requirements. [0003] In the field of automotive electronics research and development and testing, since the fault diagnosis of ECU is the key technology, the corresponding fault diagnosis test is particularly important; the above-mentioned fault diagnosis test is mainly through all the predefined faults one by one Carry out simulation, and send corresponding diagnostic service commands to the ECU under test according to the diagnostic pr...

AI Technical Summary

Problems solved by technology

[0004] In the traditional multifunctional system of fault simulation and testing, the fault is mainly injected into the device first, and the fault is triggered manually or by a relay, and then other devices or corresponding diagnostic instruments are used for diagnosis; this makes certain triggering conditions more difficult. Harsh faults are difficult to achieve, and the operation steps of the entire testing process are both numerous and complex. At the same time, the above-mentioned fault injection equipment cannot support the invocation of third-party tools, resulting in low reuse rate and poor test accuracy.

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