Multi-protocol calibration method for fault diagnosis tool ofvehicle-mounted controller

Abstract

The invention discloses a multi-protocol calibration method for a fault diagnosis tool of a vehicle-mounted controller. The multi-protocol calibration method comprises the following steps: 101, loading a configuration file for the vehicle-mounted controller of different diagnosis monitoring; 102, establishing communication between the fault diagnosis tool and the controller, adaptively matching a diagnosis protocol and analyzing the diagnosis protocol; 103, performing fault diagnosis data acquisition, recording data values of other related measurement information when a fault occurs, and analyzing a fault reason according to the corresponding information; and 104, debugging the vehicle-mounted controller by calibrating the values of the changed parameters by the diagnosis tool, so as to achieve the target state of the vehicle-mounted controller. Specific values of corresponding data can be reproduced when faults occur, fault reproduction and fault cause analysis are realized, multiple protocol stacks are integrated into the scheme based on a vehicle controller fault diagnosis protocol, fault diagnosis analysis is performed according to the protocol, and fault diagnosis is assisted.

Description

technical field [0001] The invention belongs to the field of vehicle control, in particular to a multi-protocol calibration method used for a fault diagnosis tool of a vehicle controller. Background technique [0002] Most of the existing on-board controller diagnostic tools interact with the car controller through CAN messages, analyze the fault codes and data flow messages, and obtain the corresponding fault information and engine data, so as to facilitate the operation of the on-board controller. status and various operating parameters, but a single protocol may not be able to meet the requirements of all diagnosed objects. In actual operation engineering, it may be necessary to use multiple software or tools to cooperate to complete the complete monitoring, analysis, and calibration functions. Due to the frequent switching of multiple tools and operation interfaces during the use of this mode of operation, the operation process of diagnosis and calibration work becomes c...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing on-board controller diagnostic tools interact with the car controller through CAN messages, analyze the fault codes and data flow messages, and obtain the corresponding fault information and engine data, so as to facilitate the operation of the on-board controller. status and various operating parameters, but a single protocol may not be able to meet the requirements of all diagnosed objects. In actual operation engineering, it may be necessary to use multiple software or tools to cooperate in order to complete the complete monitoring, analysis, and calibration functions.

Due to the frequent switching of multiple tools and operation interfaces during the use of this mode of operation, the operation process of diagnosis and calibration work becomes cumbersome, the data display is incomplete and not obvious, and it is prone to misoperation

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