Online fault diagnosis system and method for excavator

Abstract

The invention discloses an online fault diagnosis system and method for an excavator, which belong to the technical field of fault diagnosis in the excavator. The system comprises an online fault diagnosis instrument, a main controller, an electronic injection engine ECM (Engine Control Module) controller, a multifunctional display, and a GPS (Global Position System) controller; and the fault diagnosis method is realized by using the system. The online fault diagnosis system and method disclosed by the invention have the beneficial effects that: a general MID (Mobile Internet Device) on the market is selected and used as an fault diagnosis instrument, and the general MID has high hardware configuration, mature technique and good software development base platform and is convenient to carry and easy to develop a novel application software; the system mainly performs the communication among various data and information through a local area network formed by CAN (Control Area Network) buses; and the fault diagnosis instrument can monitor more working states, analyze the working states and modify parameters of the whole excavator on line and the like, so that much working state data of the whole excavator can be provided for repair engineers and technical staffs.

Description

technical field [0001] The invention relates to an online fault diagnosis system and method for construction machinery, in particular to an excavator online fault diagnosis system and method, belonging to the technical field of excavator fault diagnosis. Background technique [0002] The hydraulic excavator is a complex mechanical, electrical and hydraulic engineering machinery equipment, and its maintenance is very professional. In recent years, my country's excavator industry has developed rapidly, but problems such as backward technical force and lack of technical personnel have gradually been exposed. The hydraulic excavator has changed from the previous mechanical and hydraulic dominance to a typical mechatronic-hydraulic integrated product. Simple and intuitive judgment can no longer meet the maintenance requirements of the machine, and it also puts forward higher requirements for service and maintenance personnel. With the extensive use of electronic control and moni...

AI Technical Summary

Problems solved by technology

[0004] 1. The laptop is bulky and inconvenient to carry

[0005] 2. The power is limited and the use time is short

[0006] 3. Non-control system programmers or unable to debug the control system when it is inconvenient to provide control programs, have the need for confidentiality and security of core technology with independent intellectual property rights

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