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Hardware Design of Seismic Sensors in Wireless Sensor Network

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  • Gokhan Koc
  • Korkut Yegin

Abstract

Seismic sensors are invaluable for intruder detection and perimeter security. In a typical wireless sensor network application of seismic sensors, the units are battery powered and low power consumption becomes critical while fulfilling system requirements. Although many systems utilize 24-bit ADC for seismic signal processing, we employed 12-bit ADC for low power consumption. Because of this relatively low resolution ADC, preamplifier and filters require careful hardware design. We employ bidirectional T-type filtering, noise reduction, and distributed filtering between gain stages before the signal is input to ADC. The proposed design was verified with measurements. Seismic data signals due to footsteps at varying distances were successfully measured.

Suggested Citation

  • Gokhan Koc & Korkut Yegin, 2013. "Hardware Design of Seismic Sensors in Wireless Sensor Network," International Journal of Distributed Sensor Networks, , vol. 9(9), pages 640692-6406, September.
    • Handle: RePEc:sae:intdis:v:9:y:2013:i:9:p:640692
    DOI: 10.1155/2013/640692
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