Novel vibration frequency sensor based on parallel synchronized switch inductance technology

Abstract

The invention provides a novel vibration frequency sensor based on a parallel synchronized switch inductance technology. The novel vibration frequency sensor consists of a piezoelectric energy harvester and a signal conditioning circuit, wherein sinusoidal vibration is directly detected by means of the piezoelectric energy harvester, and the vibration is converted into a corresponding output voltage; and the output voltage is processed by means of the signal conditioning circuit to obtain an output voltage signal reflecting the magnitude of the vibration frequency. In addition, the novel vibration frequency sensor is relatively simple and can directly measure the sinusoidal vibration frequency.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a novel vibration frequency sensor based on parallel synchronous switch inductance technology. Background technique [0002] The phenomenon of mechanical vibration is ubiquitous in all aspects of production and life. People expect to control mechanical vibration to better serve human production and life. However, in most cases, mechanical vibration is harmful. For example, vibration can cause mechanical failure, or even destroy the entire production system, resulting in serious consequences such as economic losses, casualties, and environmental pollution. In order to reduce the harm of mechanical vibration and ensure the safe and reliable operation of mechanical equipment, real-time monitoring of mechanical vibration and early diagnosis of mechanical failure are very important. At present, the commonly used real-time monitoring and analysis methods of mechanical vibration include: vibrati...

AI Technical Summary

Problems solved by technology

[0005] (1) Most vibration sensor systems directly measure the displacement, velocity and acceleration of vibration, but cannot directly reflect the magnitude of vibration frequency;

[0006] (2) In order to obtain frequency information from these common sensor systems, additional conversion or processing units must be added, resulting in more complex and redundant systems, increasing the cost of use

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