公开(公告)号：US5640015A

公开(公告)日：1997-06-17

申请号：US546988

申请日：1995-10-23

申请人： Ulrich Kienitz ,  Thomas Heinke ,  Uwe Klonowski ,  Peter Preuss ,  Holger Sandring ,  Volker Schmidt

发明人： Ulrich Kienitz ,  Thomas Heinke ,  Uwe Klonowski ,  Peter Preuss ,  Holger Sandring ,  Volker Schmidt

IPC分类号： G01J5/00 ,  G01J5/10 ,  G01J5/52 ,  G01J5/06

CPC分类号： G01J5/52

摘要： A pyrometer for measuring the electromagnetic radiation emitted by an object comprises a first detector to which the radiation is delivered through an optical system as well as a second detector to which the radiation emanating from a reference element is delivered through the same optical system. The temperature of the reference element is monitored and a rotary optical modulator periodically enables and disables the delivery of radiation to the detectors. The output signals from the two detectors are processed to determine the difference therebetween. The sensed temperature of the reference element is taken into account as a part of determining the difference between the two detector output signals. In this way it is possible for the characteristic radiation of the optical system largely to be suppressed. The optical modulator comprises a semi-circular disk having a polyethylene terephthalate substrate coated on each side with metal. The disk is rotated through 180.degree. increments by a stepping motor such that, in one angular position, the disk permits reception by the two detectors of radiation from the optical system and, in the other angular position, the disk prevents reception by the detectors of radiation from the optical system.

摘要翻译： 用于测量由物体发射的电磁辐射的高温计包括第一检测器，辐射通过光学系统传送到该第一检测器，以及第二检测器，从参考元件发出的辐射通过该第二检测器传送通过相同的光学系统。 监测参考元件的温度，并且旋转光学调制器周期性地启用和禁止向检测器传送辐射。 来自两个检测器的输出信号被处理以确定它们之间的差异。 作为确定两个检测器输出信号之间的差异的一部分，考虑了参考元件的感测温度。 以这种方式，可以抑制光学系统的特征辐射。 该光学调制器包括一个半圆形盘，其中每侧用金属涂覆聚对苯二甲酸乙二酯基材。 磁盘通过步进电机旋转180度，使得在一个角度位置，磁盘允许两个检测器接收来自光学系统的辐射，并且在另一角度位置，磁盘防止检测器 来自光学系统的辐射。