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      新聞動態
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      光電開關;它是利用被檢測物對光束的遮擋或反射

      網址:www.www.freeunlimitedebooks.com  2019-07-20  作者:admin    閱讀:

      光電開關;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。光電開關有漫反射型,對射型等等,漫反射只需要一個傳感器即可完成發射接收,而對射型需要兩個傳感器,一個發射一個接收。
      Photoelectric switch: It uses the occlusion or reflection of the detected object to the light beam, and the circuit is connected by the synchronous circuit to detect the presence or absence of the object. Objects are not limited to metals, and all objects that reflect (or block) light can be detected. Photoelectric switch has diffuse reflection type, counter-radiation type and so on, diffuse reflection only needs one sensor to complete the transmission and reception, while the counter-radiation type needs two sensors, one transmitter and one receiver.
      光電開關也有NPN和PNP型號,但除此之外光電開關也有干結點的,即可以接任意一種PLC。
      Photoelectric switches also have NPN and PNP models, but in addition, photoelectric switches also have dry nodes, that is, they can be connected to any kind of PLC.

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