Rotation device fault diagnosis device combining piezoelectric effect and electrostatic induction

Abstract

The invention discloses a rotation device fault diagnosis device combining piezoelectric effect and electrostatic induction. The device comprises a number of piezoelectric conversion elements, a number of electrostatic sensors, a signal conditioning unit and a PC. The piezoelectric conversion elements are fixed on a rotating object. The electrostatic sensors are arranged at places, wherein the distances from the places to the piezoelectric conversion elements are between 2mm and 6mm. The output of the electrostatic sensors is connected with a signal conditioning unit, undergoes analog-to-digital conversion, and is sent into the PC for signal analysis. The rotation device fault diagnosis device provided by the invention has the advantages of simple structure, low cost, wide applicability and the like, and acquires rotation signals.

Description

technical field [0001] The invention relates to the field of machinery and electricity, in particular to the field of fault diagnosis of rotating machinery. Background technique [0002] At present, rotating mechanical equipment widely exists in many fields such as petroleum, chemical industry, electric power, energy, aviation, etc. Due to the physical phenomena in operation, it is a reverse process to deduce the hidden fault inside the machine, which is very difficult. Data collection is difficult, and how to accurately monitor the working status of rotating equipment in real time has become a difficult problem. Condition monitoring currently mainly collects signals for condition monitoring through phenomena such as vibration, sound, and thermal phenomena during equipment operation, and provides necessary data and information for fault diagnosis. At present, vibration sensors are the most widely used, such as piezoelectric, piezoresistive, capacitive and other vibration se...

AI Technical Summary

Problems solved by technology

At present, there is no monitoring method that combines piezoelectric induction and electrostatic method. This patent proposes a rotating equipment status monitoring device that combines piezoelectric effect and electrostatic induction. Charged, and then use the electrostatic sensor to measure the charge on the surface of the material, so as to monitor the working state of the equipment

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