電容(róng)式接近開關
LJC12A3-A-Z/AX , LJC12A3-A-Z/BY, LJC12A3-A-Z/AY ,LJC18A3-5-Z/BX, LJC18A3-5-Z/AX LJC18A3-5-Z/BY, LJC18A3-5-Z/AY ,LJC18A3-B-Z/BX , LJC18A3-B-Z/AX, LJC18A3-B-Z/BY LJC18A3-B-Z/AY,LJC24A3-8-Z/BX, LJC24A3-8-Z/AX , LJC24A3-8-Z/BY , LJC24A3-8-Z/AY LJC24A3-8-J/EZ, LJC24A3-8-J/DZ , LJC18A3-B-J/DZ, LJC18A3-5-J/DZ, LJC18A3-5-J/EZ LJC18A3-B-J/EZ,LJC24A3-T-Z/BX, LJC24A3-T-Z/AX, LJC24A3-T-Z/BY , LJC24A3-T-Z/AY LJC24A3-T-J/EZ,LJC24A3-T-J/DZ ,LJC30A3-10-Z/BX, LJC30A3-10-Z/AX ,LJC30A3-10-Z/BY LJC30A3-10-Z/AYLJC30A3-10-J/EZ LJC30A3-10-J/DZ, LJC30A3-H-Z/BX LJC30A3-H-Z/AX LJC30A3-H-Z/BY LJC30A3-H-Z/AY LJC30A3-H-J/EZ LJC30A3-H-J/DZ LJC34A3-K-Z/BX LJC34A3-K-Z/AX LJC34A3-K-Z/BY LJC34A3-K-Z/AY LJC34A3-K-J/EZ LJC34A3-K-J/DZ LJC20A4-10-Z/BXLJC20A4-10-Z/AX LJC20A4-10-Z/BY LJC20A4-10-Z/AY LJC20A4-10-J/EZ LJC20A4-10-J/DZLJC38A4-20-Z/BX LJC38A4-20-Z/AXLJC38A4-20-Z/BY LJC38A4-20-Z/AY LJC38A4-20-J/EZ LJC38A4-20-J/DZLJC80A4-40-Z/BX LJC80A4-40-Z/AXLJC80A4-40-Z/BY LJC80A4-40-Z/AY LJC80A4-40-J/EZ LJC80A4-40-J/DZ LJC12A3-2-Z/BX, LJC12A3-2-Z/AX, LJC12A3-2-Z/BY ,LJC12A3-2-Z/AY, LJC12A3-A-Z/BX
工作原理
電感(gǎn)式接近開關屬於(yú)一種有(yǒu)開關量輸出的位置傳感器,它由LC高頻振(zhèn)蕩器和放(fàng)大處理電路(lù)組成,利用(yòng)金屬物體在(zài)接近(jìn)這個能產生電磁場的振蕩感應(yīng)頭時,使物(wù)體內部產生渦流。這個渦流反作用於接近開關,使接近開關(guān)振蕩能力衰減,內部電(diàn)路的參數發生變(biàn)化,由此識別出有無金屬物體接近,進而控製開關的通(tōng)或(huò)斷。這種接近開關所能檢(jiǎn)測的物體必須(xū)是金屬導電體
電容式(shì)接近(jìn)開(kāi)關係列
電感式接近開關由(yóu)三大部分組(zǔ)成:振蕩器、開關電路(lù)及(jí)放大輸出(chū)電路。振蕩器產生一個變交磁場,並 達(dá)到感應距離(lí)時,在金屬目標(biāo)內產(chǎn)生渦流,從而導致振蕩衰減,以至停振。
振蕩(dàng)器振蕩及停振的變化(huà)被後級放(fàng)大電路處理(lǐ)並轉換成開關信號,觸發驅動控製(zhì)器件,從而達到非接觸式之檢測目的。
目標(biāo)離傳感器越近,線圈內的阻尼就越大,阻尼越(yuè)大,傳(chuán)感器振蕩器的電流(liú)越小(xiǎo)
|