A New Design and Implementation of Packets in Digitizer Used in Earthquakes Monitoring Systems

Abstract

The seismological acquisition and processing at the Egyptian National Seismic Network (ENSN) is a fully automated network system dedicated to the digital acquisition and real-time processing of seismological data. Data are digitized at a sampling rate of 100 samples per second with a High Resolution Digitizer (HRD) or Trident Digitizer from NANOMETRICS. A new algorithm is proposed for the digitized data packets using a variable packet length which is better than fixed packet length since it is errorless (lossless) in samples. Also the new algorithm saves the bits wasted due to the old compression algorithm. The results of the synthesis of the new algorithm of packetization using XILINIX ISE 14.5 (Virtex7) showed a minimal use of resources, and a total power consumption in of 217 mW at a frequency of the design is 148.480MHz.