A KIND OF ANTI-INTERFERENCE TECHNIQUE FOR PHOTOELECTRIC MEASUREMENT

何迪和; 刘宪清; 张靖武

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A KIND OF ANTI-INTERFERENCE TECHNIQUE FOR PHOTOELECTRIC MEASUREMENT

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- A KIND OF ANTI-INTERFERENCE TECHNIQUE FOR PHOTOELECTRIC MEASUREMENT
- 光电测量的一种抗干扰技术
- Issue 2, Pages: 120-124(1993)
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- Published：1993
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何迪和, 刘宪清, 张靖武. A KIND OF ANTI-INTERFERENCE TECHNIQUE FOR PHOTOELECTRIC MEASUREMENT[J]. 1993, (2): 120-124.
DOI：

何迪和, 刘宪清, 张靖武. A KIND OF ANTI-INTERFERENCE TECHNIQUE FOR PHOTOELECTRIC MEASUREMENT[J]. 1993, (2): 120-124. DOI：

摘要

应用光的干沙、衍射、偏振等原理来测量位移、转角、速度、角速度等许多物理量时

光源输出光强的起伏和光在传输过程中能量耗散的不规则变化使测量误差增大。用分束镜分出一束参考光以监测进入测试系统的入射光强变化情况

并用光电转换器将讯号光和参考光转换成电压信号V

和V

用除法器相除求出其商V

在相除过程中就“除”掉了上述干扰

使信号恢复其本来面目。

Abstract

When some optical principles such as the interference

diffraction and polarization of light are used to measure physical quantities such as displacement rotational angle velocity and angular velocity

the errors of measurement are increased due to the undulation of the output intensity of light from the light source and the irregular change of the energy dissipa- tion during the transmission. If the change of the intensity of the incident light entering the measuring and testing system is monitored by a beam of reference light which is separated from the incident light by utilizing a spectroscope

the message and the reference light are transformed into voltage signals V

and V

by a photodetector

the quotient of two signals V

can be got by a divider. Then

the interference mentioned above is being eliminated in the process of divid- ing. So the signal is resumed to its true colours.

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