Improving Sensitivity of the Pyroelectric Infrared Flame Detector

초전형 적외선식 불꽃감지기의 감도특성 개선

Song, Hyun Seon;Lee, Yeu Yong

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


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.


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


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Supported by : 세명대학교