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接近传感器

定义：接近传感器又称接近开关，能以非接触方式检测到物体的接近和附近物体的有无，是代替限位开关等接触式检测方式，以无需接触检测对象进行检测为目的的传感器的总称。

分类：根据检测原理和被测物体的不同，接近传感器主要分为电感式、静电容式两大类。

接近传感器工作原理——电感式

1＞．由于能以非接触方式进行检测，所以不会磨损和损伤

被测物体

2＞．由于采用无接点输出方式，因此寿命延长

3＞．与接触式开关相比，可实现高速响应

4＞．不受检测物体颜色的影响

接近传感器术语

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