New energy finished automobile heterogeneous network emulator and control method thereof

Abstract

The invention discloses a new energy finished automobile heterogeneous network emulator and a control method thereof. The emulator comprises a multi-core single-chip microcomputer, an ECU power output drive circuit, an ECU signal conditioning input circuit, an ECU standard input / output interface GPIO, CAN interfaces, LIN interfaces, SPIs, an Ethernet interface and a USB interface. A subsystem control model and a high-level protocol library are integrated in a MATLAB / Simulink model, a simulator model is established corresponding to a controller, operation is realized in real time, codes are automatically generated, and compiled and downloaded to the multi-core single-chip microcomputer, and semi-physical simulation of the finished automobile system is completed. In the heterogeneous network emulator, operation of electrical subsystems in different bus networks is simulated in real time, coordinated operation of different external control subsystems is detected on the basis of multi-core real-time concurrent operation, real-time fault simulation is realized, parallel operation of the KWP2000 and J1939 communication protocols is detected, and the fault diagnosis function of the vehicle mounted network is realized. Thus, a function and performance test platform is provided for the finished automobile product in the new-energy automobile design and development stages.

Description

technical field [0001] The invention relates to the field of automotive electronics and automotive communication, in particular to a new energy vehicle heterogeneous network emulator and a control method. Background technique [0002] With the deteriorating international energy shortage and environmental pollution problems, the development of new energy vehicles is an inevitable choice to effectively alleviate the pressure on energy and the environment. The functions of the electronic control system of modern new energy vehicles are becoming more and more complex, and the product update speed is getting faster and faster. Of course, the development cycle of the electronic control unit is required to be shorter and shorter. The traditional serial mode development method has been difficult to meet the requirements of the software development of the automotive electronic control system. [0003] Under the traditional serial mode development method, it is first necessary to def...

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Problems solved by technology

If this continues, it will inevitably take a long time to be verified, and the development cycle is too long

[0004] Moreover, the new energy vehicle bus is becoming more and more complex, and the traditional single network has been gradually eliminated and cannot meet the needs of social development. A platform controller is required to support complex heterogeneous networks. At the same time, because the platform controller provides rich peripheral Ports, externally connected to various subsystem networks, need to realize the operation of parallel tasks at high speed, and there is an urgent need for an electronic control system using a multi-core single-chip microcomputer

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