Sensor Model of a Vibration Sensor based on Flat Coil Element

摘要

A new type of vibration sensor based on flat coil element has been made. Its working principle is based on position change of a seismic mass that put in front of a flat coil element. The flat coil is a part of a LC oscillator; therefore, the change of seismic mass position will change its resonance frequency. A sensor model based on mathematical approach for determining frequency and amplitude of the sensor has been developed. The model shows a good result with relative error under 3%.