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YAMATAKE開關(guān)FL7M-3J6HD-L5 現(xiàn)貨供應(yīng) 光電開關(guān)(光電傳感器)是光電接近開關(guān)的簡稱,它是利用被檢測物對光束的遮擋或反射,由同步回路選通電路從而檢測物體有無的。物體不限于金屬,所有能反射光線的物體均可被檢測。光電開關(guān)將輸入電流在發(fā)射器上轉(zhuǎn)換為光信號射出,接收器再根據(jù)接收到的光線的強(qiáng)弱或有無對目標(biāo)物體進(jìn)行探測。安防系統(tǒng)中常見的光電開關(guān)煙霧報警器,工業(yè)中經(jīng)常用它來記數(shù)機(jī)械臂的運(yùn)動次數(shù)。 FL7M-7K6H FL7M-10J6D FL7M-10K6 FL7M-4J6ND FL7M-4K6N
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光控開關(guān)與光電開關(guān)的區(qū)別 1、首先可以確定光控開關(guān)不屬于光電開關(guān)。 2、光電開關(guān)是通過把光強(qiáng)度的變化轉(zhuǎn)換成電信號的變化來實(shí)現(xiàn)控制的。它是利用被檢測物體對紅外光束(區(qū)分點(diǎn))的遮光或反射,由同步回路選通而檢測物體的有無,其物體不限于金屬,對所有能反射光線的物體均可檢測。光電開關(guān)在一般情況下,有三部分構(gòu)成,它們分為:發(fā)送器、接收器和檢測電路。 根據(jù)檢測方式的不同,紅外線光電開關(guān)可分為:(1).漫反射式光電開關(guān) ?。?).鏡反射式光電開關(guān) (3).對射式光電開關(guān) 光電開關(guān)工作原理(4).槽式光電開關(guān) (5).光纖式光電開關(guān) 3、光控開關(guān),它的“開”和“關(guān)”是靠可控硅的導(dǎo)通和阻斷來實(shí)現(xiàn)的,而可控硅的導(dǎo)通和阻斷又是受自然光(區(qū)分點(diǎn))的亮度(或人為亮度)的大小所控制的。該裝置適合作為街道、宿舍走廊或其它公共場所照明燈,起到日熄夜亮的控制作用,以節(jié)約用電。 4 、光電開關(guān)應(yīng)用的環(huán)境是影響其長期工作可靠性的重要條件。當(dāng)光電開關(guān)工作于zui大檢測距離狀態(tài)時,由于光學(xué)透鏡會被環(huán)境中的污物粘住,甚至?xí)灰恍?qiáng)酸性物質(zhì)腐蝕,以至降低使用參數(shù)特性。但光控開關(guān)不受