热释电探测器外部噪声的研究

INVESTIGATION OF EXTRANEOUS NOISE IN PYROELECTRIC IR DETECTOR

研究了ＰＥＣ结构热释电探测器的环境温度变化噪声及机械振动噪声，介绍了两种降低外部噪声的方法，得出了比探测率、环境温度变化产生的噪声与负载电阻的关系，并进行了实验验证；并对双元探测器的一些特性进行了研究．

The ambient temperature variation noise and vibration noise in a pyroelectric IR detector were investigated systematically. The dependence of the specific detectivity and temperature variation noise on the load resistance was studied. In addition, the characteristics of the IR detector with complementary domain structure are discussed in this paper.