Fault diagnosis system and method for excavator

A fault diagnosis system and excavator technology, applied in the field of excavators, can solve problems such as imperfect application and limited range of fault detection

Inactive Publication Date: 2021-05-11
XCMG EXCAVATOR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the fault detection range i...

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  • Fault diagnosis system and method for excavator
  • Fault diagnosis system and method for excavator
  • Fault diagnosis system and method for excavator

Examples

Experimental program
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Embodiment 1

[0037] A fault diagnosis system for an excavator includes a diagnosis fault code reading module, a data identifier reading and writing module, an input and output control module and a routine control module.

[0038] The diagnostic fault code reading module is obtained by sending a diagnostic request through a diagnostic device, and the ECU sends a diagnostic response to obtain; compared with the execution method rules of J1939 current fault acquisition, the diagnostic fault acquisition method of the present invention is simpler, and the execution is relatively simple. convenient;

[0039] The format of the diagnosis request read by the diagnosis fault code includes: request service identifier 0x19+subfunction 0x02+fault diagnosis mask. The format of the diagnostic response includes: response service identifier 0x59 + subfunction 0x02 + diagnostic mask supported by the ECU + DTC1 + status mask of DTC1 + DTC2 + status mask of DTC2.... The acquisition method of current fault in...

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Abstract

The invention discloses a fault diagnosis system and method for an excavator. The system comprises a diagnosis fault code reading module used for obtaining diagnosis fault information, an input and output control module used for replacing an ECU input signal value or an output port, and a routine control module used for remotely requesting a starting routine, a stopping routine or requesting an execution result of the routine. According to the fault diagnosis system, the current fault information and the historical fault information can be obtained, the execution mode of fault obtaining is simplified, the diagnosis range is expanded through input and output control and routine control, and the excavator fault can be positioned through a man-machine interaction mode.

Description

technical field [0001] The invention relates to a fault diagnosis system and method for excavators, belonging to the technical field of excavators. Background technique [0002] Excavators are widely used in water conservancy projects, open-pit mining, engineering construction and other fields, and the application conditions are relatively complicated and the application conditions are relatively harsh. In order to ensure that the excavator can work normally under various conditions and ensure the comfort and safety of the excavator's operating environment, the number of ECUs is increasing, and the network and control strategies of the excavator are becoming more and more complex. In this case, in order to troubleshoot the excavator better and faster, and ensure the safety and work efficiency of the excavator, fault diagnosis emerges as the times require. [0003] At present, the fault diagnosis method of the excavator is to access the fault codes through the self-diagnosis...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0262G05B2219/24065
Inventor 曹俊陈鹤范党平牛东东刘立祥王绪通车迪卞清荣魏红敏
Owner XCMG EXCAVATOR MACHINERY
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