Vehicle semi-virtual ECU test system and test method thereof

Abstract

The invention relating to the test system developed by an ECU relates to a vehicle semi-virtual ECU test system and a test method thereof. The test system comprises a host computer PC, a real-time system, a signal simulation unit and a fault injection unit thereof, an MCU simulation communication simulation unit and a fault injection unit thereof, a signal mapping matrix unit and an MCU connectionbase. The host computer is connected with the real-time system connected with the signal simulation unit and the signal mapping matrix unit. A hardware model unit, a controlled object model, a test case, a software model, and a test management program are arranged in the host computer; and a virtual peripheral unit and a model interaction unit are installed in the real-time system. In addition, the test method includes: customizing a controlled object model, a test case, and a software model and simulating a controlled object and the test case; connecting a tested MCU and a write-in softwaremodel, and generating an MCU circuit model file and a mathematical model; matching a connection relationship between testing resources and the MCU; and carrying out testing based on the test case. Therefore, the ECU development time is shortened substantially.

Description

technical field [0001] The present invention relates to a test system developed by an electric control unit (Electric Control Unit, referred to as ECU) for a vehicle. Specifically, it is a test system that can directly test a microcontroller MCU (Micro Control Unit), MCU bottom layer drive and application before the ECU hardware development is completed. The vehicle semi-virtual ECU test system and its test method can greatly shorten the ECU development time by testing and verifying the layer control strategy and hardware concept scheme. Background technique [0002] Currently, the development of ECU electronic control units for vehicles has been introduced into the V-Model development process and the method of Model-Based Design (MBD). The whole process of system development and testing. Computers can not only assist in the design of automotive electronic control systems, carry out scheme design and offline simulation, but also be used for real-time rapid control prototypi...

AI Technical Summary

Problems solved by technology

In the V process, after the hardware unit integration test and the software unit integration test are completed, the software and hardware will be integrated and the system integration test will be carried out. At this stage, the ECU function and Testing and inspection of safety, etc., this process can only be carried out after obtaining the ECU hardware entity. Due to the longer hardware iteration cycle and the high time cost of discovering and correcting problems, it will lead to a long development time for the entire controller and cannot cope with the increasingly accelerated ECU development requirements

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