彈(dan)性(xing)體(彈(dan)性(xing)元(yuan)件,敏(min)感梁)在(zai)外(wai)力作用下產(chan)(chan)生彈(dan)性(xing)變(bian)形,使粘貼(tie)在(zai)他表(biao)面的(de)電(dian)(dian)阻(zu)應變(bian)片(轉換元(yuan)件)也隨同產(chan)(chan)生變(bian)形,電(dian)(dian)阻(zu)應變(bian)片變(bian)形后,它的(de)阻(zu)值將發生變(bian)化(增大(da)或減小),再(zai)經過(guo)惠斯頓電(dian)(dian)橋將這(zhe)一電(dian)(dian)阻(zu)變(bian)化轉換為電(dian)(dian)壓信(xin)(xin)號(hao),從(cong)而完成了將外(wai)力變(bian)換為電(dian)(dian)信(xin)(xin)號(hao)的(de)過(guo)程。
傳(chuan)(chuan)統的(de)模擬式(shi)電(dian)(dian)阻應變(bian)(bian)式(shi)傳(chuan)(chuan)感器就是由(you)電(dian)(dian)阻應變(bian)(bian)片、彈性體(ti)和惠斯頓橋路組成,后端還需要儀表或者(zhe)變(bian)(bian)送器,將電(dian)(dian)壓信號(hao)轉換成數字(zi)量。
目前數字式傳感(gan)(gan)器在(zai)傳感(gan)(gan)器內集成了A/D轉換(huan),直(zhi)接(jie)輸(shu)出(chu)數字量信(xin)號,可直(zhi)接(jie)供客戶使(shi)(shi)用。對于多(duo)傳感(gan)(gan)器稱(cheng)(cheng)重(zhong)系(xi)統,客戶還需(xu)要進(jin)行稱(cheng)(cheng)重(zhong)相關(guan)的(de)設置,因此(ci),一(yi)般數字傳感(gan)(gan)器還需(xu)要配合儀表一(yi)起(qi)使(shi)(shi)用。