Detecting the Seismic Event by the Electrodynamic Seismic Sensor

Electrodynamic seismic sensors with two mechanic oscillation circuits could detect a ground vibration of two different objects with two different frequencies, for example, a human and a car. They don't need external power for their performance and have small overall dimensions, that's why they are attractive to use them in portable security or monitor systems. To estimate the detection range of the security system, including the electrodynamic seismic sensors, it is necessary to know the response of the electrodynamic seismic sensor to different seismic events. Such a response is modeled and presented in this paper.