Aimed at the importance of sensor in the automation system, this paper pointed out that feasibility and necessity of fault detection diagnosis for sensor, and basic method of the realization.

本文针对传感器在自动化系统中的重要性，指出了传感器故障诊断的必要性、可行性以及实现的基本方法。

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This paper analyzes the key problems in designing signal measuring and control circuit of laser range sensor using PSD, and gives out the circuits' diagrams.

针对采用PSD研制的激光测距传感器在检测及控制电路的设计中所存在的关键问题进行了分析，并给出了电路的设计框图。

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This paper introduces the features that the sensor detects the signal, analyzes on the design of the digital filter, and advances the methods for FIR digital filter and carries out the experiment.

介绍了传感器检测信号的特点，分析了数字滤波器的设计，提出了FIR数字滤波方法并进行了实验。

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