公开(公告)号：EP1106989A1

公开(公告)日：2001-06-13

申请号：EP00201352.2

申请日：2000-04-14

Applicant: Delphi Technologies, Inc.

Inventor： Schubring, Norman W. ,  Mantese, Joseph V. ,  Micheli, Adolph L. ,  Catalan, Antonio B.

IPC: G01N21/17 ,  G01J5/34 ,  G01K7/00

CPC classification number: G01J5/34 ,  G01K7/003

Abstract: A ferroelectric/pyroelectric sensor (92) that employs a technique for determining a charge output of a pyroelectric element (96) of the sensor (92) by measuring the hysteresis loop output of the element (96) several times during a particular time frame for the same temperature. An external AC signal (104) is applied to the pyroelectric element (96) to cause the hysteresis loop output from the element (96) to switch polarization. Charge integration circuitry (106), such as a combination capacitor (108) and operational amplifier (110), is employed to measure the charge from the element (96). A mechanical shutter is not used, and thus the charge integration output from the element (96) is directly proportional to the incident radiation thereof.

Abstract translation: 一种铁电/热电传感器（92），其采用用于通过在特定时间范围内测量元件（96）的滞后回路输出数次来确定传感器（92）的热电元件（96）的电荷输出的技术， 相同的温度。 外部AC信号（104）被施加到热电元件（96），以使得从元件（96）输出的磁滞回线切换偏振。 使用诸如组合电容器（108）和运算放大器（110）的电荷积分电路（106）来测量来自元件（96）的电荷。 不使用机械快门，因此来自元件（96）的电荷积分输出与其入射辐射成正比。