A configurable and extensible vehicle diagnostic system and diagnostic method

Abstract

The invention discloses a configurable and extensible automobile diagnosis system and a diagnosis method. The invention provides an ECU diagnosis instrument development and diagnosis platform separation technology. According to the development technology, software engineers develop a piece of common platform software, a common communication protocol module, a common diagnosis protocol module and a common diagnosis instrument configuration tool, and develop an ECU-dedicated test service function module, an ECU-dedicated data service function module and an ECU-dedicated expert service function module in order to be compatible with the characteristics of ECUs of different models; automobile engineers use the common diagnosis instrument configuration tool to configure an ECU diagnosis instrument, wherein the configuration content includes configuring a communication module and parameters, configuring a diagnosis module and parameters, configuring diagnosis data and configuring an ECU-dedicated function module; and an ECU diagnosis data packet is formed and released to a common diagnosis platform.

Description

Technical field [0001] The invention relates to the technical field of automobile diagnosis, in particular to a configurable and expandable automobile diagnosis system and diagnosis method. Background technique [0002] At present, the software development process of the existing automobile diagnostic instrument is that the automobile engineer formulates the diagnosis document of the ECU (Electronic Control Unit), the software engineer reads this document and confirms its diagnosis attributes, and the automobile engineer cooperates with the software engineer to develop the communication protocol module and diagnosis Protocol module, input and analyze ECU diagnostic data, including ECU identification data, fault description data, measurement signal data, and develop function test routines (Routine). [0003] The problem in the prior art is that software engineers have proficient programming skills but lack a technical background in the field of automobile diagnosis. Automobile engin...

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Problems solved by technology

[0003] The problem in the existing technology is that software engineers have proficient programming skills but lack the technical background in the field of automotive diagnostics, and automotive engineers have rich experience in automotive diagnostics but relatively weak computer programming skills

As a result, during the development of automotive diagnostic instruments, automotive engineers know how to perform automotive diagnostics, but do not know how to program them. Software engineers know how to program, but do not know how to perform automotive diagnostics. There is professional communication between automotive engineers and software engineers. Obstacles, resulting in continuous modification and adjustment in the development process of diagnostic instrument software, difficulty in controlling the quality of diagnostic instrument software, low development efficiency, and long development cycle

[0004] The problem that exists at the same time in the prior art is that different types of ECUs have highly similar diagnostic properties, but software engineers need to develop independently for each type of ECU, which causes software engineers to repeatedly develop communication protocol modules of diagnostic software , diagnostic protocol module, software interface, and because the diagnostic data is entered by software engineers, the software development process and subsequent ECU diagnostic function updates always require the joint participation of automotive engineers and software engineers, which makes software development difficult and ECU diagnostic attributes occur. In the case of changing or needing to add ECU diagnosis, the update and maintenance of diagnostic software is very complicated, and the waste of human resources is very large

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