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      光電開關

      網址:www.www.freeunlimitedebooks.com  2019-02-01  作者:admin    閱讀:

      光電開關是光電接近開關的簡稱,它是利用被檢測物對光束的遮擋或反射,由同步回路接通電路,從而檢測物體的有無。物體不限于金屬,所有能反射光線(或者對光線有遮擋作用)的物體均可以被檢測。光電開關將輸入電流在發射器上轉換為光信號射出,接收器再根據接收到的光線的強弱或有無對目標物體進行探測。安防系統中常見的光電開關煙霧報警器,工業中經常用它來計數機械臂的運動次數。
      Photoelectric switch is the abbreviation of photoelectric proximity switch. It uses the occlusion or reflection of the detected object to the beam, and the circuit is connected by the synchronous circuit to detuogun.37ix.com.cngeshanban.37ix.com.cnshusongdaij.07858.net shusongdaiu.07858.net yajieji.07858.net fangbaohulu.07858.nettect the presence or absence of the object. Objects are not limited to metals, and all objects that reflect (or block) light can be detected. The photoelectric switch converts the input current into the light signal which is emitted from the transmitter. The receiver detects the target object according to the received light intensity or whether or not. The common photoelectric switch smoke alarm in the security system is often used in industry to count the movement times of the manipulator.

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