電(dian)子汽(qi)(qi)車(che)衡(heng)(heng)利用應(ying)變(bian)電(dian)測原(yuan)理(li)稱(cheng)(cheng)(cheng)重(zhong)(zhong)。電(dian)子汽(qi)(qi)車(che)衡(heng)(heng)在(zai)稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)(chuan)(chuan)感(gan)器的(de)彈性體上(shang)粘(zhan)貼有應(ying)變(bian)計(ji)(ji)，組(zu)(zu)成惠斯(si)登電(dian)橋。在(zai)無負(fu)(fu)荷時(shi)，電(dian)橋處于(yu)平(ping)衡(heng)(heng)狀態，輸(shu)(shu)出(chu)為零。當彈性體承受載荷時(shi)，各應(ying)變(bian)計(ji)(ji)隨之產(chan)生與載荷成比例的(de)應(ying)變(bian)，由(you)輸(shu)(shu)出(chu)電(dian)壓即可測出(chu)外加(jia)載。電(dian)子汽(qi)(qi)車(che)衡(heng)(heng)俗稱(cheng)(cheng)(cheng)地磅，是(shi)于(yu)大宗(zong)貨(huo)物計(ji)(ji)量的(de)主要稱(cheng)(cheng)(cheng)重(zhong)(zhong)設備。在(zai)二十世(shi)(shi)紀80年代之前常見的(de)汽(qi)(qi)車(che)衡(heng)(heng)一般是(shi)利用杠桿原(yuan)理(li)純機械(xie)(xie)構(gou)造的(de)機械(xie)(xie)式汽(qi)(qi)車(che)衡(heng)(heng)，也稱(cheng)(cheng)(cheng)作機械(xie)(xie)地磅。二十世(shi)(shi)紀80年代中(zhong)期，隨著(zhu)高(gao)精度稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)(chuan)(chuan)感(gan)器技術的(de)日趨成熟，機械(xie)(xie)式地磅逐漸被(bei)精度高(gao)、穩定性好、操作方便的(de)電(dian)子汽(qi)(qi)車(che)衡(heng)(heng)所取代。電(dian)子衡(heng)(heng)器包(bao)括電(dian)子汽(qi)(qi)車(che)衡(heng)(heng)、電(dian)子軌(gui)道衡(heng)(heng)、定量包(bao)裝秤、鋼材秤等，一般由(you)秤體、稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)(chuan)(chuan)感(gan)器、稱(cheng)(cheng)(cheng)重(zhong)(zhong)顯示儀表、機械(xie)(xie)傳(chuan)(chuan)(chuan)(chuan)力及限位機構(gou)等幾部分組(zu)(zu)成。稱(cheng)(cheng)(cheng)體是(shi)汽(qi)(qi)車(che)衡(heng)(heng)的(de)主體，稱(cheng)(cheng)(cheng)重(zhong)(zhong)顯示儀表和(he)稱(cheng)(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)(chuan)(chuan)感(gan)器負(fu)(fu)責把重(zhong)(zhong)量信號(hao)傳(chuan)(chuan)(chuan)(chuan)送(song)并顯示出(chu)來(lai)(lai)，信號(hao)盒和(he)接(jie)線盒用來(lai)(lai)，增(zeng)加(jia)信號(hao)傳(chuan)(chuan)(chuan)(chuan)送(song)速度，屬(shu)于(yu)信號(hao)增(zeng)強裝置，如有必要可以安裝無線傳(chuan)(chuan)(chuan)(chuan)輸(shu)(shu)裝置，減(jian)少相應(ying)的(de)配置。
電(dian)(dian)(dian)子(zi)汽(qi)車(che)(che)衡(heng)(heng)利用(yong)應(ying)變(bian)電(dian)(dian)(dian)測(ce)原理(li)稱重(zhong)。電(dian)(dian)(dian)子(zi)汽(qi)車(che)(che)衡(heng)(heng)在(zai)稱重(zhong)傳(chuan)感器(qi)的(de)(de)(de)彈(dan)性體上粘貼有應(ying)變(bian)計，組成惠斯登電(dian)(dian)(dian)橋(qiao)。在(zai)無負荷時(shi)，電(dian)(dian)(dian)橋(qiao)處于平衡(heng)(heng)狀(zhuang)態(tai)，輸出為(wei)零(ling)。當彈(dan)性體承受載荷時(shi)，各(ge)應(ying)變(bian)計隨之產(chan)生(sheng)與(yu)載荷成比例的(de)(de)(de)應(ying)變(bian)，由輸出電(dian)(dian)(dian)壓即可測(ce)出外加載。電(dian)(dian)(dian)子(zi)汽(qi)車(che)(che)衡(heng)(heng)在(zai)檢(jian)定時(shi)由于配備的(de)(de)(de)標準器(qi)及相關配套設備，沉重(zhong)、繁雜、龐大，且不同生(sheng)產(chan)廠家(jia)的(de)(de)(de)技術人(ren)(ren)員(yuan)、計量部門(men)的(de)(de)(de)檢(jian)定、修理(li)人(ren)(ren)員(yuan)及使(shi)用(yong)維護人(ren)(ren)員(yuan)所(suo)處的(de)(de)(de)情況千差(cha)(cha)萬別，技術知(zhi)識水平亦參差(cha)(cha)不齊(qi)。汽(qi)車(che)(che)衡(heng)(heng)常見(jian)故(gu)障(zhang)與(yu)維修方法你不得不知(zhi)隨著我國(guo)(guo)綜合國(guo)(guo)力(li)的(de)(de)(de)發展，對(dui)(dui)外貿易頻(pin)率也(ye)隨之增多，部分企(qi)業為(wei)了對(dui)(dui)大宗貨物進(jin)行稱重(zhong)，因(yin)此(ci)，應(ying)用(yong)汽(qi)車(che)(che)衡(heng)(heng)這一計量設備，其可以企(qi)業生(sheng)產(chan)過(guo)程中(zhong)對(dui)(dui)產(chan)品進(jin)行計量控制；在(zai)建(jian)筑工(gong)(gong)地上，工(gong)(gong)作(zuo)人(ren)(ren)員(yuan)也(ye)會利用(yong)電(dian)(dian)(dian)子(zi)汽(qi)車(che)(che)衡(heng)(heng)對(dui)(dui)部分建(jian)材的(de)(de)(de)吊裝稱重(zhong)，判斷是否有過(guo)載現象。總(zong)的(de)(de)(de)來說，電(dian)(dian)(dian)子(zi)衡(heng)(heng)技術在(zai)計量工(gong)(gong)作(zuo)中(zhong)起到(dao)重(zhong)要(yao)作(zuo)用(yong)，因(yin)此(ci)我們需要(yao)總(zong)結其故(gu)障(zhang)維修經驗，以便于更(geng)好地服(fu)務于未來的(de)(de)(de)計量工(gong)(gong)作(zuo)中(zhong)。
與(yu)傳(chuan)(chuan)統(tong)的(de)(de)(de)(de)(de)機(ji)械式稱(cheng)(cheng)重(zhong)(zhong)儀(yi)表(biao)(biao)和其他地(di)面(mian)稱(cheng)(cheng)重(zhong)(zhong)儀(yi)表(biao)(biao)相比，具(ju)有稱(cheng)(cheng)重(zhong)(zhong)速(su)度快、精度高、靈(ling)敏(min)度高、數(shu)顯、直觀(guan)易(yi)(yi)讀、穩(wen)(wen)定性(xing)強、可(ke)(ke)靠性(xing)高、使用壽命長(chang)等優點(dian)。特別(bie)是(shi)在(zai)危險、惡劣的(de)(de)(de)(de)(de)環境中，更能體(ti)現(xian)(xian)電(dian)(dian)(dian)子(zi)衡(heng)器(qi)的(de)(de)(de)(de)(de)作用。整個自(zi)動(dong)稱(cheng)(cheng)重(zhong)(zhong)系統(tong)具(ju)有的(de)(de)(de)(de)(de)高精度傳(chuan)(chuan)感(gan)器(qi)和智(zhi)能儀(yi)表(biao)(biao)顯示。該儀(yi)器(qi)具(ju)有靈(ling)敏(min)度高、分辨率高、穩(wen)(wen)定性(xing)和可(ke)(ke)靠性(xing)好、易(yi)(yi)于打印等優點(dian)。如(ru)果稱(cheng)(cheng)重(zhong)(zhong)管理(li)(li)(li)系統(tong)由(you)計算機(ji)和稱(cheng)(cheng)重(zhong)(zhong)軟件組成，還可(ke)(ke)以(yi)(yi)(yi)實現(xian)(xian)稱(cheng)(cheng)重(zhong)(zhong)的(de)(de)(de)(de)(de)遠(yuan)程傳(chuan)(chuan)輸和集(ji)中自(zi)動(dong)管理(li)(li)(li)。汽(qi)車(che)衡(heng)常(chang)見故隍與(yu)維修處(chu)理(li)(li)(li)方法：數(shu)字(zi)跳(tiao)變(bian)：1)電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)不穩(wen)(wen)定。這(zhe)是(shi)因為(wei)電(dian)(dian)(dian)壓(ya)超(chao)出(chu)了(le)儀(yi)表(biao)(biao)數(shu)值(zhi)(zhi)的(de)(de)(de)(de)(de)正常(chang)范(fan)圍，而正常(chang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)范(fan)圍在(zai)187V?242V內，所以(yi)(yi)(yi)，電(dian)(dian)(dian)子(zi)衡(heng)器(qi)產(chan)生了(le)數(shu)字(zi)跳(tiao)變(bian)現(xian)(xian)象。針對這(zhe)一問題，需要配(pei)備一個穩(wen)(wen)壓(ya)電(dian)(dian)(dian)源(yuan)，讓電(dian)(dian)(dian)壓(ya)穩(wen)(wen)定在(zai)正常(chang)范(fan)圍。2)插(cha)(cha)頭(tou)、插(cha)(cha)座(zuo)氧(yang)化。由(you)于電(dian)(dian)(dian)子(zi)衡(heng)器(qi)插(cha)(cha)頭(tou)、插(cha)(cha)座(zuo)長(chang)時(shi)間使用并且與(yu)空氣接觸，極(ji)易(yi)(yi)發生氧(yang)化，導(dao)致電(dian)(dian)(dian)阻的(de)(de)(de)(de)(de)不穩(wen)(wen)定性(xing)。對此，可(ke)(ke)以(yi)(yi)(yi)將(jiang)(jiang)(jiang)(jiang)插(cha)(cha)頭(tou)、插(cha)(cha)座(zuo)浸泡(pao)在(zai)10%稀(xi)鹽酸(suan)中，10min后將(jiang)(jiang)(jiang)(jiang)插(cha)(cha)頭(tou)、插(cha)(cha)座(zuo)撈起，用吹風吹干或者自(zi)然晾(liang)干，這(zhe)樣就可(ke)(ke)以(yi)(yi)(yi)解決插(cha)(cha)頭(tou)、插(cha)(cha)座(zuo)氧(yang)化的(de)(de)(de)(de)(de)問題。 電(dian)(dian)(dian)子(zi)汽(qi)車(che)衡(heng)的(de)(de)(de)(de)(de)工作原理(li)(li)(li)：被(bei)稱(cheng)(cheng)重(zhong)(zhong)物或載重(zhong)(zhong)汽(qi)車(che)置于承載器(qi)臺面(mian)上(shang)，在(zai)重(zhong)(zhong)力(li)作用下，通過承載器(qi)將(jiang)(jiang)(jiang)(jiang)重(zhong)(zhong)力(li)傳(chuan)(chuan)遞至稱(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)感(gan)器(qi)，使稱(cheng)(cheng)重(zhong)(zhong)傳(chuan)(chuan)感(gan)器(qi)彈(dan)性(xing)體(ti)產(chan)生變(bian)形，貼附于彈(dan)性(xing)體(ti)上(shang)的(de)(de)(de)(de)(de)應(ying)變(bian)計橋路失去平(ping)衡(heng)，輸出(chu)與(yu)重(zhong)(zhong)量(liang)數(shu)值(zhi)(zhi)成正比例的(de)(de)(de)(de)(de)電(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)，經線性(xing)放(fang)大(da)(da)器(qi)將(jiang)(jiang)(jiang)(jiang)信(xin)(xin)號(hao)(hao)放(fang)大(da)(da)，再經A/D轉換為(wei)數(shu)字(zi)信(xin)(xin)號(hao)(hao)，由(you)儀(yi)表(biao)(biao)的(de)(de)(de)(de)(de)微處(chu)理(li)(li)(li)機(ji)（CPU）對重(zhong)(zhong)量(liang)信(xin)(xin)號(hao)(hao)進(jin)行處(chu)理(li)(li)(li)后直接顯示重(zhong)(zhong)量(liang)數(shu)據。
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