GPD505V-B011
GPD505V-B011
TRA 41
光電檢測(cè)方法具有精度高、反應(yīng)快、非接觸等優(yōu)點(diǎn),傳感器的結(jié)構(gòu)簡(jiǎn)單,形式靈活多樣,體積小。近年來(lái),隨著光電技術(shù)的發(fā)展,光電傳感器已成為系列產(chǎn)品,其品種及產(chǎn)量日益增加,在各種輕工自動(dòng)機(jī)上獲得廣泛的應(yīng)用。典型案例如下:
?。?) 煙塵濁度監(jiān)測(cè)儀
防止工業(yè)煙塵污染是環(huán)保的重要任務(wù)之一。為了消除工業(yè)煙塵污染,首先要知道煙塵排放量,因此必須對(duì)煙塵源進(jìn)行監(jiān)測(cè)、自動(dòng)顯示和超標(biāo)報(bào)警。煙道里的煙塵濁度是用通過(guò)光在煙道里傳輸過(guò)程中的變化大小來(lái)檢測(cè)的。如果煙道濁度增加,光源發(fā)出的光被煙塵顆粒的吸收和折射增加,到達(dá)光檢測(cè)器的光減少,因而光檢測(cè)器輸出信號(hào)的強(qiáng)弱便可反映煙道濁度的變化。
?。?) 光電轉(zhuǎn)速傳感器
在待測(cè)轉(zhuǎn)速軸上固定一帶孔的轉(zhuǎn)速調(diào)置盤,在調(diào)置盤一邊由白熾燈產(chǎn)生恒定光,透過(guò)盤上小孔到達(dá)光敏二極管組成的光電轉(zhuǎn)換器上,轉(zhuǎn)換成相應(yīng)的電脈沖信號(hào),經(jīng)過(guò)放大整形電路輸出整齊的脈沖信號(hào),轉(zhuǎn)速由該脈沖頻率決定。
(3) 光電池
光電池作為光電探測(cè)使用時(shí),其基本原理與光敏二極管相同,但它們的基本結(jié)構(gòu)和制造工藝不完全相同。由于光電池工作時(shí)不需要外加電壓,光電轉(zhuǎn)換效率高,光譜范圍寬,頻率特性好,噪聲低等,它已廣泛地用于光電讀出、光電耦合、光柵測(cè)距、激光準(zhǔn)直、電影還音、紫外光監(jiān)視器和燃?xì)廨啓C(jī)的熄火保護(hù)裝置等。
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福州卓凱電子科技有限公司
地址:福州市閩侯西江濱大道77號(hào)正榮潤(rùn)園一號(hào)樓1205室
大量現(xiàn)貨abb,施耐德等國(guó)外多家品牌,產(chǎn)品涉及變頻器,儀器儀表,變送器,可編程控制器plc和人機(jī)界面。
電話:15506917382??? 0591-62182535?
傳真:0591-22989937?? QQ:583745937? 聯(lián)系人:王工
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努力造就實(shí)力,態(tài)度決定高度。
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GPD505V-B011
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