Device fault diagnosis method, device fault diagnosis device, and device fault diagnosis system

Abstract

The invention discloses a device fault diagnosis method, a device fault diagnosis device, and a device fault diagnosis system, and relates to a device detection technology field. A problem of a conventional automobile fault diagnosis way of low efficiency is solved. The device fault diagnosis method comprises steps that an audio signal of a to-be-diagnosed device is acquired, and is a sound signal generated by the to-be-diagnosed device during an operation process; a fault source signal is extracted from the audio signal of the to-be-diagnosed device; a preset fault characteristic representing the device fault is extracted from the fault source signal; the preset fault characteristic is input in a preset fault diagnosis model, and the type of the fault is determined. The device fault diagnosis method, the device fault diagnosis device, and the device fault diagnosis system are used for an automobile fault diagnosis process.

Description

technical field [0001] The invention relates to the technical field of equipment detection, in particular to a method, device and system for equipment fault diagnosis. Background technique [0002] At present, there are two commonly used diagnostic methods for automobile faults: one is manual diagnosis, that is, intuitive diagnosis, which mainly relies on the practical experience and knowledge of the diagnostic personnel, and with the help of simple tools, using eyes, ears, hands, etc. Sensory means, while inspecting, testing, and analyzing, and then making judgments on vehicle failures. The other is the instrument and equipment diagnosis method. This method uses special instruments and equipment to detect the necessary technical parameters of the car, and then compares the detected technical parameters with the technical parameters in normal conditions to judge the fault. [0003] When the inventor implemented the above method, he found at least the following problems in t...

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Problems solved by technology

[0003] When the inventor implemented the above method, he found at least the following problems in the prior art: the first diagnosis method is simple and intuitive, but the diagnosis requires personnel to eliminate the final faults one by one, the diagnosis efficiency is not high, and the whole diagnosis needs to rely on The experience of diagnostic personnel makes the diagnosis accuracy not high; for the second diagnosis method, the diagnosis speed is higher, but due to the need for special equipment and professional technical support, the investment is relatively large

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