Vibration and acoustic transmission signal regulation instrument for detecting mechanical faults

Abstract

The invention discloses a vibration and acoustic transmission signal regulation instrument for detecting mechanical faults, belongs to the technical field of mechanical equipment fault detection instruments and is used for detecting mechanical equipment faults. The vibration and acoustic transmission signal regulation instrument consists of a resonance modulation part and a normal signal processing part, wherein the resonance modulation part comprises a program controlled amplifying circuit, a high Q-factor band-pass filter, a secondary resonance circuit, an envelop detection circuit and anti-aliasing circuits; the normal signal processing part comprises a channel selection circuit and an anti-aliasing circuit; a sensor for detecting faults is connected with the program controlled amplifying circuit; the program controlled amplifying circuit is connected with the high Q-factor band-pass filter and the channel selection circuit respectively; the high Q-factor band-pass filter is connected with the secondary resonance circuit, the envelop detection circuit and the anti-aliasing circuit; the channel selection circuit is connected with the anti-aliasing circuits; and the anti-aliasing circuits are both connected with an A/D (analogue-to-digital) acquisition card. By using a vibration and acoustic transmission signal regulation technique, the vibration and acoustic transmission signal regulation instrument is good in effect of extracting fault signals of mechanical equipment and is precise in fault diagnosing.

Description

technical field [0001] The invention relates to an instrument for detecting and diagnosing faults through vibration and acoustic emission signal conditioning technology after extracting fault signals of mechanical equipment, and belongs to the technical field of fault detection instruments for mechanical equipment. Background technique [0002] Condition monitoring and fault diagnosis of mechanical equipment gearboxes have been a subject of great concern in the field of engineering technology at home and abroad. At present, equipment condition monitoring and fault diagnosis have played a key guiding role in ensuring the safe operation of mechanical equipment, realizing condition-based maintenance based on equipment operating status, and improving machine life, and have achieved significant economic and social benefits. [0003] Fault diagnosis in engineering applications is mainly to judge the damage degree and occurrence location of mechanical parts. The frequency componen...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is a vibration and acoustic emission signal conditioning instrument that can detect mechanical faults with better effect of fault signal extraction and more accurate fault diagnosis of modern mechanical equipment with high automation level and complex structure and working conditions

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