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IPDIN壓力傳感器SENSIT分類優(yōu)選M6420-010-119
閱讀:230 發(fā)布時(shí)間:2022-4-25IPDIN壓力傳感器SENSIT分類優(yōu)選M6420-010-119
01應(yīng)變式壓力傳感器
應(yīng)變式壓力傳感器是一種通過(guò)測(cè)量各種彈性元件的應(yīng)變來(lái)間接測(cè)量壓力的傳感器。根據(jù)
制作材料的不同,應(yīng)變?cè)梢苑譃榻饘俸桶雽?dǎo)體兩大類。應(yīng)變?cè)墓ぷ髟砘趯?dǎo)體和
半導(dǎo)體的“應(yīng)變效應(yīng)",即當(dāng)導(dǎo)體和半導(dǎo)體材料發(fā)生機(jī)械變形時(shí),其電阻值將發(fā)生變化。
當(dāng)金屬絲受外力作用時(shí),其長(zhǎng)度和截面積都會(huì)發(fā)生變化,其電阻值即會(huì)發(fā)生改變,假如
金屬絲受外力作用而伸長(zhǎng)時(shí),其長(zhǎng)度增加,而截面積減少,電阻值便會(huì)增大。當(dāng)金屬絲受外
力作用而壓縮時(shí),長(zhǎng)度減小而截面增加,電阻值則會(huì)減小。只要測(cè)出加在電阻兩端的電壓的
變化,即可獲得應(yīng)變金屬絲的應(yīng)變情況。
02壓阻式壓力傳感器
壓阻壓力傳感器是指利用單晶硅材料的壓阻效應(yīng)和集成電路技術(shù)制成的傳感器。單晶硅
材料在受到力的作用后﹐電阻率發(fā)生變化,通過(guò)測(cè)量電路就可得到正比于力變化的電信號(hào)輸
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IPDIN壓力傳感器SENSIT分類優(yōu)選M6420-010-119