Thermo-electric model of a pyroelectric detector

Abstract

This paper discusses the construction and operating rules of a pyroelectric detector. An analysis of heat phenomena occurring in the detector and the influence on the signals generated by the detector was carried out. A strict dependence of the electric characteristics of the detector upon its heat properties determined by the geometrical structure and heat properties of the materials that make up the detector was emphasised, while considering the detectors used for the conversion of impulse signals. Also emphasised was the necessity to take into account the differences occurring in the process of heating up and cooling down of the pyroelectric film of the detector. © 2012 WIT Press.