德國賀德克壓力傳感器工作原理

 賀德克傳感器德(de)國出(chu)品可提供德(de)國原(yuan)廠原(yuan)裝的出(chu)貨！賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)空運到上(shang)海，賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)質保1年！賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)報價快、賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)壽命(ming)長！賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)歡迎更多(duo)中國客(ke)戶在線咨詢(xun)！我們(men)希望更多(duo)賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)走量(liang)進行(xing)供應！賀(he)(he)德(de)克傳(chuan)(chuan)(chuan)(chuan)感(gan)器(qi)期待咨詢(xun)！

德國賀德克壓(ya)力傳感(gan)器(qi)工作原(yuan)理

賀德克壓力傳感器、壓阻式壓力傳感器、電感式壓力傳感器、電容式壓力傳感器、諧振式壓力傳感器及電容式加速度傳感器等。但應用為廣泛的是壓阻式壓力傳感器，它具有極低的價格和較高的精度以及較好的線性特性。下面我們主要介紹這類傳感器。
（1）在了(le)解(jie)壓阻(zu)(zu)(zu)式(shi)力(li)傳(chuan)(chuan)感(gan)器時(shi)(shi)，我(wo)們(men)首先認識(shi)一(yi)下電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)這(zhe)種(zhong)元件(jian)。電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)是(shi)(shi)一(yi)種(zhong)將被(bei)測件(jian)上(shang)(shang)的(de)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)變(bian)(bian)(bian)(bian)化轉換(huan)成為(wei)一(yi)種(zhong)電(dian)(dian)(dian)信號的(de)敏感(gan)器件(jian)。它是(shi)(shi)壓阻(zu)(zu)(zu)式(shi)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)傳(chuan)(chuan)感(gan)器的(de)主要組(zu)成部分之一(yi)。電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)應(ying)(ying)(ying)(ying)用多(duo)的(de)是(shi)(shi)金(jin)屬(shu)電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)和半導體應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)兩種(zhong)。金(jin)屬(shu)電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)又(you)有絲狀(zhuang)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)和金(jin)屬(shu)箔(bo)狀(zhuang)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)兩種(zhong)。通(tong)常(chang)是(shi)(shi)將應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)通(tong)過(guo)特殊的(de)粘和劑緊密的(de)粘合(he)在產生力(li)學應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)基體上(shang)(shang)，當基體受力(li)發生應(ying)(ying)(ying)(ying)力(li)變(bian)(bian)(bian)(bian)化時(shi)(shi)，電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)也一(yi)起(qi)產生形變(bian)(bian)(bian)(bian)，使應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)的(de)阻(zu)(zu)(zu)值(zhi)發生改變(bian)(bian)(bian)(bian)，從(cong)而使加在電(dian)(dian)(dian)阻(zu)(zu)(zu)上(shang)(shang)的(de)電(dian)(dian)(dian)壓發生變(bian)(bian)(bian)(bian)化。這(zhe)種(zhong)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)在受力(li)時(shi)(shi)產生的(de)阻(zu)(zu)(zu)值(zhi)變(bian)(bian)(bian)(bian)化通(tong)常(chang)較小(xiao)，一(yi)般這(zhe)種(zhong)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)都組(zu)成應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)電(dian)(dian)(dian)橋，并通(tong)過(guo)后續的(de)儀表放大(da)器進(jin)行放大(da)，再傳(chuan)(chuan)輸給處理電(dian)(dian)(dian)路（通(tong)常(chang)是(shi)(shi)A/D 轉換(huan)和CPU ）顯(xian)示或執行機構。電(dian)(dian)(dian)阻(zu)(zu)(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)片(pian)(pian)(pian)(pian)的(de)工作(zuo)原理

金屬電阻應變片的工作原理是吸附在基體材料上應變電阻隨機械形變而產生阻值變化的現象，俗稱為電阻應變效應。金屬導體的電阻值可用下式表示：
式中：ρ——金屬導體的電阻率（Ω。cm2/m ）
      S ——導體的截面積（cm2 ）
      L ——導體的長度（m ）
我們以金屬絲應變電阻為例，當金屬絲受外力作用時，其長度和截面積都會發生變化，從上式中可很容易看出，其電阻值即會發生改變，假如金屬絲受外力作用而伸長時，其長度
增(zeng)(zeng)加(jia)，而截(jie)面積減少，電(dian)阻值(zhi)便會增(zeng)(zeng)大。當金(jin)屬絲受外力作用而壓(ya)縮時，長度減小(xiao)而截(jie)面增(zeng)(zeng)加(jia)，電(dian)阻值(zhi)則會減小(xiao)。只(zhi)要測出加(jia)在(zai)電(dian)阻的變化(hua)（通常是測量(liang)電(dian)阻兩端的電(dian)壓(ya)），即可獲得應(ying)變金(jin)屬絲的應(ying)變情況。

 德國賀德克壓(ya)力傳感器工作原(yuan)理

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