PYROELECTRIC DETECTORS AND THEIR APPLICATIONS

被引：115

作者：

HOSSAIN, A ^{[1
]}

RASHID, MH ^{[1
]}

机构：

[1] INDIANA UNIV PURDUE UNIV,DEPT ENGN,FT WAYNE,IN 46805

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 1991年 / 27卷 / 05期

关键词：

D O I：

10.1109/28.90335

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reviews the principles of operations of pyroelectric detectors. The equations for current responsivity, voltage responsivity, noise, noise equivalent power, and detectivity are derived from the fundamental thermodynamic model of a pyroelectric detector. The frequency-dependent current and voltage responsivities are explained. Factors influencing the choice of pyroelectric material for various applications are briefly summarized. The possibilities of various new applications and the developments of pyroelectric detectors are also briefly discussed. A laboratory prototype demonstration system has been built using an ELTEC detector type 5192. For a high signal-to-noise ratio, an electric charge integration technique is applied. High-precision operational amplifiers are employed for high-quality signal conditioning. The pyroelectric detector consists of two parallelly opposed dual lithium tantalate pyroelectric single crystals with a JFET source follower sealed in a standard TO-5 housing.

引用

页码：824 / 829

页数：6

共 12 条

[1] PVF2 POLYMERS - FERROELECTRIC POLARIZATION AND PIEZOELECTRIC PROPERTIES UNDER DYNAMIC PRESSURE AND SHOCK-WAVE ACTION [J].