An Interface Circuit for a SAW based Chemical Sensor in an Ad-hoc Network

Yagneshwara R. Vadapalli, Durgamadhab Misra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The design of a smart integrated chemical sensor system that will enhance sensor performance and compatibility to ad-hoc network architecture remains a challenge. This work involves the design of an interface chip for a Surface Acoustic Wave (SAW) based chemical sensor where the sensor reflects the RF input and introduces a time delay proportional to the concentration of the vapors absorbed by it. The interface chip detects the frequency shift as a function of the chemical species absorbed by the sensor and alerts the ad hoc network controller when a monitored parameter exceeds some threshold, based on local processing and measurements. System components are designed in RF environment to carry out the local processing and estimation of the chemical absorbed. Simulation results for individual circuit components as well as the complete chip outline the robust performance of the system that improve chemical target detection and reduce false alarms.

Original languageEnglish (US)
Title of host publicationProceedings of the IASTED International Conference on Modelling and Simulation
EditorsM.H. Hamza, M.H. Hamza
Pages60-63
Number of pages4
StatePublished - Dec 1 2003
EventProceedings of the IASTED International Conference on Modelling and Simulation - Palm Springs, CA, United States
Duration: Feb 24 2003Feb 26 2003

Publication series

NameProceedings of the IASTED International Conference on Modelling and Simulation

Other

OtherProceedings of the IASTED International Conference on Modelling and Simulation
CountryUnited States
CityPalm Springs, CA
Period2/24/032/26/03

All Science Journal Classification (ASJC) codes

  • Software
  • Modeling and Simulation
  • Computer Science Applications

Keywords

  • Ad-hoc network
  • Interface chip
  • SAW based chemical sensors

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