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Analysis method and equipment for fault diagnosis communication protocol on basis of automotive open system architecture (AUTOSAR)

A communication protocol and fault diagnosis technology, which is applied in the direction of electrical testing/monitoring, etc., can solve problems such as difficulty in car diagnosis, failure to diagnose, and different communication protocols, and achieve the effects of saving development costs, reducing waste of resources, and smooth popularization and application

Inactive Publication Date: 2012-02-08
ZHEJIANG UNIV
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Problems solved by technology

Therefore, traditional car diagnostic instruments or diagnostic software cannot be used for diagnosis on new cars developed based on the AUTOSAR software architecture, and the obstacles of different communication protocols between the two make it difficult to diagnose this type of car.

Method used

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  • Analysis method and equipment for fault diagnosis communication protocol on basis of automotive open system architecture (AUTOSAR)
  • Analysis method and equipment for fault diagnosis communication protocol on basis of automotive open system architecture (AUTOSAR)
  • Analysis method and equipment for fault diagnosis communication protocol on basis of automotive open system architecture (AUTOSAR)

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Embodiment example

[0029] 1. Select a communication protocol according to the diagnostic instrument or diagnostic software used, and send a diagnostic request. As an optional implementation case of the present invention, the diagnostic instrument only supports the CAN protocol stipulated in the OBD. The diagnostic service request sent by the user conforms to the CAN protocol standard.

[0030] 2. The dual-port adapter encapsulates the data to be sent according to the protocol type of the data requested by the user, so that it becomes a data frame conforming to the AUTOSAR communication protocol stack standard used by the automotive ECU.

[0031] Through the adapter request query of the present invention, according to the response situation, the AUTOSAR communication protocol supported and used on the automobile ECU can be judged according to the matching of the communication protocol format. The process of adapter self-adaptive query AUTOSAR communication protocol is as follows: figure 2 show...

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Abstract

The invention relates to an analysis method and equipment for a fault diagnosis communication protocol on the basis of automotive open system architecture (AUTOSAR). A protocol adapter is arranged between an automobile electric control unit (ECU) and a diagnosis instrument and is a double-port adapter capable of supporting the automatic conversion of different communication protocols, and the effective communication of data between the automobile ECU and the diagnosis instrument is ensured. The method is characterized in that data sent by the diagnosis instrument is capsulated into data frames conforming to the AUTOSAR communication protocol stack, in addition, the received data frames are analyzed, and diagnosis data in the data frames is extracted to be provided for the diagnosis instrument. The analysis method has the beneficial effects that the data communication between the ECU developed on the basis of the AUTOSAR standard and the diagnosis instrument supporting the on-board diagnostics (OBD) standard can be effectively realized, the problem of different data communication protocols between the ECU and the diagnosis instrument is solved, in addition, the receiving and the sending of each data packet can be packed or unpacked layer by layer according to the user configuration parameters, and the correctness and the stability of the data packet are ensured.

Description

technical field [0001] The invention relates to communication technology of automotive electronic engineering, in particular to an analysis method and equipment based on AUTOSAR fault diagnosis communication protocol. Background technique [0002] With the wide application of electronic technology and computer technology, automobile technology has also been developed rapidly. For intelligent, networked, and reliable vehicles, more and more electronic control units (ECUs) are integrated on them, and the electronic control system is becoming more and more complex, resulting in more diverse faults in the electronic control system. Therefore, traditional diagnostic methods and diagnostic equipment have been difficult to meet the requirements of current users. [0003] At present, OBD-II is the mainstream standard specification of on-board diagnostic system in the world, and all major automobile manufacturers need to adopt a unified diagnostic communication protocol and fault di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 杨国青李红唐凯罗端钱啸君
Owner ZHEJIANG UNIV
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