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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The obstacles avoiding ability of six-legged robot was carried out by installing infrared sensor on the last limb of leg in this paper.

通过将红外线传感器安装在腿部最后一个肢节上，实现了六足机器人避障功能。

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