Design of real time sensor system for detection and processing of seismic waves for earthquake early warning system

Abstract

Earthquake is one of the major natural calamity. So prediction of the reach of earthquake event to the various locations could result in minimizing the disaster due to it. An early warning system for earthquake mainly issues an alarm to have a time margin for evacuating peoples to the safe place or shutting down key facilities like major industrial work etc. to avoid major consequences [1]. This paper contains the design of sensor system and the techniques used for detection and processing of the received signals in real time. The main difference between our method and conventional methods of earthquake location tracking is addition of two planer Azimuth angle. Conventionally the distance triangulation method is used for tracking the earthquake location. But this method is not much accurate since it considers the average speeds of the P and S waves. Speed of seismic waves varies immensely depending upon type of soil, rocks or water etc. below the earth surface. The addition of using the two planer Azimuth angle gives 3-dimensional angle of incoming seismic waves at the sensor system. So using two planer Azimuth angle along with distance triangulation method we can track location of earthquake more accurately by using at least three sensors data.