Configurable method and device for diagnostic protocol stack system based on CAN (controller area network) bus

Abstract

The invention discloses a configurable method for a diagnostic protocol stack based on a CAN (controller area network) bus. The diagnostic protocol stack is realized according to international diagnostic standards ISO (international standardization organization) 15765 and AUTOSAR (automotive open system architecture) standards, and comprises an encapsulated network layer, an application layer module, an application layer standard interface, an ECU (electronic control unit) abstraction layer standard interface and a configurable file. When users carry out diagnostic requirement development, the existing module is applied for setting the configurable parameters through the configurable file, and only the concentration on the realization of application layer and bottom layer driving according to the standard interface is needed. The configurable method has the advantages that the universality, the reliability and the portability of diagnostic software are enhanced, the transplantation on different hardware platforms is convenient, the repeated development of the protocol stack of the network layer and an application layer is avoided, the development time is greatly shortened, the development cost is reduced, and the development and the expansion are convenient.

Description

technical field [0001] The invention relates to the field of automotive electronic engineering, in particular to a configurable method based on a CAN bus diagnostic protocol stack system. Background technique [0002] With the rapid development of electronic technology and computer technology, electronic control systems with powerful functions, reliable performance and low cost are widely used in automobiles. For intelligent, networked, high-reliability vehicles, more and more electronic control units (ECUs) are integrated, and the electronic control system is becoming more and more complex, which makes it extremely difficult to locate and handle vehicle faults. Traditional vehicle diagnosis and maintenance The method has been difficult to meet the real-time and accuracy requirements of fault diagnosis. [0003] In order to solve the above problems, car manufacturers have added a fault self-diagnosis system in the electronic control unit. By continuously detecting the worki...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the current situation of poor versatility and poor portability in the existing vehicle-mounted network diagnosis technology, and propose a configurable method based on the CAN bus diagnostic protocol stack to enhance the versatility and reliability of the existing diagnostic software. Reusability and reusability enable automobile manufacturers to focus on the development of application layer requirements during the development of diagnostic software, which is suitable for a variety of different application platforms

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