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Improving Sensitivity of the Pyroelectric Infrared Flame Detector

초전형 적외선식 불꽃감지기의 감도특성 개선

Song, Hyun Seon;Lee, Yeu Yong
송현선;이의용

  • Received : 2015.01.12
  • Accepted : 2015.02.10
  • Published : 2015.04.30

Abstract

PZT ceramics, usually used pyroelectric materials exhibited a relatively highly Curie temperture(Tc) of $250-450^{\circ}C$ and permittivity constant of 500-1600. In this paper, the pyroelectric infrared detectors are applied two different types of pyroelectric materials, that is tetragonal crystal of ferroelectric $PbTiO_3$ and rhombohedral crystal of $Pb(Zr,Ti)O_3$. PZT ceramics shows not only highly Curie temperture but also excellent pyro and piezoelectric properties at the Zr/Ti(=52/48) ratio. Therefor in this paper, the pyroelectric infrared detectors are applied PZT ceramics, and obtained sensitive sensing characteristics by expriment case studies.

Keywords

PZT Ceramics;Pyroelectric Infrared;Detector;Detecting Programming;Amplifying Circuit of PIR Signal;Microprocessor Control Circuit

References

  1. E.L.DERENIAK, "Infrared Detectors and System", Willy Interscience, pp.1-35, 1996.
  2. Sangho Lee, Juhyun Yoo, Yeu-yong Lee, Hyun-Song Song, "Dielectric and Piezoelectric Properties of (Na,K)$NbO_{3}$ Ceramics as a Function of $SrTIO_{3}$3 Substitution", J. of the Korean Institute of Electrical and Electronic Material Engineersl , Vol.22, No.6, p484-488, 2009. https://doi.org/10.4313/JKEM.2009.22.6.484
  3. Jeong-Wook Kim "Sequence of Reaction Phases and Pyroelectric Properties in the System Pb(Zn Nb ) O_(3)-Pb(Fe Nb )O_(3)" Hanyang Univ. Hh.D thesis, 1995.
  4. Jun Rim Choi "Pyroelectric Infrared Microsensors Made by Micromachining technology", The Institute of Electronics and Information Engineers, Vol. 35-D, No.4, p. 93-100, 1998.
  5. Hyun Seon Song, Yeu Yong Lee, "A Study on Signal Circuit of the Triple Pyroelectric Infrared Flame Detector", Journal of the korean Institute of Illuminating and Electrical Installation Engineers,, Vol.24, No.12, p201-207, 2010. https://doi.org/10.5207/JIEIE.2010.24.12.201

Acknowledgement

Supported by : 세명대학교