技術領域

本發明涉(she)及(ji)一種傳(chuan)感(gan)器及(ji)其制(zhi)造(zao)方(fang)法，特別涉(she)及(ji)一種用于(yu)在某(mou)一狹小(xiao)接觸區域中(zhong)對一點(dian)接觸物體間的(de)壓力(li)或集中(zhong)力(li)進(jin)行檢測的(de)柔性單點(dian)力(li)片式傳(chuan)感(gan)器及(ji)其制(zhi)造(zao)方(fang)法。

背景技術

壓力(li)傳感(gan)器(qi)及檢(jian)測技術在(zai)航(hang)空航(hang)天、軍事工業、汽(qi)車、船舶制造、工業自動(dong)化、醫(yi)學研(yan)究、生(sheng)物(wu)醫(yi)療等領域中(zhong)發揮(hui)著重要的作用(yong)。然而在(zai)上述應(ying)用(yong)領域，許多場(chang)合(he)需在(zai)某(mou)一狹小空間(jian)(jian)中(zhong)對某(mou)一點(dian)(dian)接(jie)觸物(wu)體(ti)間(jian)(jian)的壓力(li)或(huo)集中(zhong)力(li)進行(xing)檢(jian)測，例如點(dian)(dian)接(jie)觸物(wu)體(ti)間(jian)(jian)在(zai)運動(dong)過程中(zhong)摩擦力(li)相(xiang)互作用(yong)過程的研(yan)究、例如檢(jian)測空間(jian)(jian)凸輪與滾(gun)子從動(dong)件處(chu)于點(dian)(dian)接(jie)觸狀(zhuang)態下的相(xiang)互作用(yong)力(li)、檢(jian)測某(mou)一對牙齒嚙合(he)時的相(xiang)互作用(yong)力(li)等。由于受到傳感(gan)器(qi)重量、體(ti)積以(yi)及工作空間(jian)(jian)(如狹縫)的限制，這時傳統壓力(li)傳感(gan)器(qi)便(bian)(bian)不能用(yong)于上述場(chang)合(he)下的使用(yong)來檢(jian)測某(mou)一點(dian)(dian)接(jie)觸物(wu)體(ti)間(jian)(jian)的壓力(li)或(huo)集中(zhong)力(li)。即(ji)便(bian)(bian)勉強使用(yong)，也不能滿(man)足操作便(bian)(bian)捷的要求，

發明內容

本發明針對傳統壓力傳感器(qi)不能(neng)對某一點(dian)接(jie)觸物體(ti)(ti)間壓力進行檢測(ce)、體(ti)(ti)積大(da)、重(zhong)(zhong)量(liang)重(zhong)(zhong)、操作(zuo)不方便的(de)缺點(dian)；提供了一種能(neng)夠(gou)檢測(ce)出某一點(dian)接(jie)觸物體(ti)(ti)間壓力的(de)柔性單點(dian)力片式傳感器(qi)，該傳感器(qi)具有體(ti)(ti)積小、重(zhong)(zhong)量(liang)輕、制作(zuo)簡單、可低成本批量(liang)化生(sheng)產的(de)特點(dian)，并(bing)且可重(zhong)(zhong)復使用、操作(zuo)簡便。

本發明的(de)另一個目(mu)的(de)是提供一種該傳感器的(de)制造方法。

為達到上(shang)述目(mu)的，本發明是采取(qu)如下(xia)技(ji)術方案予以實現(xian)的：

一種柔性單點(dian)力片(pian)(pian)式傳感(gan)器，包括壓(ya)敏(min)(min)體(ti)(ti)(ti)、分(fen)別設置(zhi)(zhi)在壓(ya)敏(min)(min)體(ti)(ti)(ti)上(shang)(shang)(shang)下(xia)(xia)(xia)端面(mian)的(de)(de)兩個電(dian)(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)(jie)(jie)片(pian)(pian)，其(qi)特征在于，還包括有形(xing)狀大小(xiao)相(xiang)同(tong)的(de)(de)上(shang)(shang)(shang)基(ji)(ji)板(ban)(ban)(ban)和下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)，上(shang)(shang)(shang)、下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)之(zhi)間(jian)(jian)由粘(zhan)接(jie)(jie)(jie)(jie)(jie)層封接(jie)(jie)(jie)(jie)(jie)；在上(shang)(shang)(shang)基(ji)(ji)板(ban)(ban)(ban)長(chang)度方(fang)向的(de)(de)一側設置(zhi)(zhi)有一凸起；在相(xiang)對該凸起的(de)(de)下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)上(shang)(shang)(shang)設置(zhi)(zhi)有一凹陷(xian)，該凹陷(xian)與(yu)所(suo)述(shu)(shu)(shu)凸起之(zhi)間(jian)(jian)形(xing)成一個密閉的(de)(de)壓(ya)敏(min)(min)體(ti)(ti)(ti)室，其(qi)中(zhong)封裝有所(suo)述(shu)(shu)(shu)的(de)(de)壓(ya)敏(min)(min)體(ti)(ti)(ti)及電(dian)(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)(jie)(jie)片(pian)(pian)，所(suo)述(shu)(shu)(shu)壓(ya)敏(min)(min)體(ti)(ti)(ti)室的(de)(de)大小(xiao)剛好與(yu)壓(ya)敏(min)(min)體(ti)(ti)(ti)的(de)(de)大小(xiao)吻合；所(suo)述(shu)(shu)(shu)下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)1沿其(qi)長(chang)度方(fang)向設置(zhi)(zhi)有兩條相(xiang)互平行的(de)(de)印刷(shua)電(dian)(dian)(dian)極(ji)(ji)6，每個印刷(shua)電(dian)(dian)(dian)極(ji)(ji)分(fen)別連(lian)接(jie)(jie)(jie)(jie)(jie)位(wei)于壓(ya)敏(min)(min)體(ti)(ti)(ti)上(shang)(shang)(shang)或下(xia)(xia)(xia)端面(mian)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)(jie)(jie)片(pian)(pian)9和伸出下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)引出片(pian)(pian)3；所(suo)述(shu)(shu)(shu)下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)(ban)上(shang)(shang)(shang)的(de)(de)兩條印刷(shua)電(dian)(dian)(dian)極(ji)(ji)6從連(lian)接(jie)(jie)(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)(jie)(jie)片(pian)(pian)9到連(lian)接(jie)(jie)(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)引出片(pian)(pian)3一段的(de)(de)上(shang)(shang)(shang)表(biao)面(mian)設置(zhi)(zhi)有電(dian)(dian)(dian)極(ji)(ji)保護膜。

一種(zhong)上述柔性單點力片式傳感器的(de)制造(zao)方法，其特(te)征在于(yu)，包括(kuo)如下步(bu)驟：

a.先制備形狀大(da)小相(xiang)同(tong)的(de)上基(ji)板(ban)和下基(ji)板(ban)，在(zai)(zai)上基(ji)板(ban)長度方向的(de)一(yi)側設置(zhi)(zhi)一(yi)凸(tu)起；在(zai)(zai)相(xiang)對(dui)該凸(tu)起的(de)下基(ji)板(ban)上設置(zhi)(zhi)一(yi)凹陷；

b.將(jiang)下基板(ban)1固定在絲網印(yin)刷機的(de)(de)印(yin)刷臺上(shang)，用導電(dian)料漿沿下基板(ban)長(chang)度方向從遠離凹陷(xian)一側到凹陷(xian)的(de)(de)上(shang)表面印(yin)制兩條印(yin)刷電(dian)極，干燥(zao)后，在下基板(ban)遠離凹陷(xian)的(de)(de)一側設置兩個外露(lu)的(de)(de)電(dian)極引出片(pian)3。

c.在(zai)(zai)下(xia)基板凹(ao)陷中涂(tu)敷壓敏電(dian)阻油墨(mo)，并放置一(yi)個壓敏體(ti)(ti)，該壓敏體(ti)(ti)上、下(xia)端(duan)面(mian)事先分別焊接好(hao)兩(liang)個電(dian)極(ji)連(lian)接片(pian)9，位(wei)于壓敏體(ti)(ti)上、下(xia)端(duan)面(mian)的兩(liang)電(dian)極(ji)連(lian)接片(pian)9分別連(lian)接至位(wei)于下(xia)基板上的兩(liang)條印(yin)刷(shua)電(dian)極(ji)6的一(yi)端(duan)，兩(liang)條印(yin)刷(shua)電(dian)極(ji)6的另一(yi)端(duan)連(lian)接外露的兩(liang)個電(dian)極(ji)引(yin)出片(pian)3；同時，在(zai)(zai)上基板4的凸起內表面(mian)上涂(tu)敷壓敏電(dian)阻油墨(mo)。

d.在(zai)下基板的(de)兩條印刷電(dian)極(ji)(ji)6上(shang)從連(lian)接電(dian)極(ji)(ji)連(lian)接片9到連(lian)接電(dian)極(ji)(ji)引出片3的(de)一段上(shang)表面涂敷一層電(dian)極(ji)(ji)保(bao)護膜并(bing)干燥。

e.將(jiang)上、下(xia)基板用粘接層復合，使所述凸起與(yu)凹陷(xian)之(zhi)間形成一(yi)個的密閉(bi)壓(ya)(ya)敏(min)(min)體(ti)室，將(jiang)壓(ya)(ya)敏(min)(min)體(ti)及電(dian)極(ji)連接片封裝在其內，壓(ya)(ya)敏(min)(min)體(ti)室的大小(xiao)剛好(hao)與(yu)壓(ya)(ya)敏(min)(min)體(ti)的大小(xiao)吻合，同(tong)時兩條印刷(shua)電(dian)極(ji)相(xiang)互平(ping)行。

以(yi)上方法(fa)中，所(suo)(suo)(suo)述(shu)的印(yin)刷電極用(yong)導電漿料(liao)為銀導電漿料(liao)；所(suo)(suo)(suo)述(shu)的電極保(bao)護膜材料(liao)采用(yong)羥乙基(ji)(ji)纖維素；所(suo)(suo)(suo)述(shu)的壓(ya)敏電阻油墨采用(yong)碳二硫化(hua)鉬(mu)油墨；所(suo)(suo)(suo)述(shu)的上、下基(ji)(ji)板采用(yong)聚氯乙烯材料(liao)制成矩形基(ji)(ji)片；所(suo)(suo)(suo)述(shu)的粘接層采用(yong)環(huan)氧樹脂(zhi)。

本發明的(de)柔性單(dan)點力片(pian)(pian)式傳(chuan)感器(qi)不(bu)需要外加保(bao)護(hu)裝(zhuang)置，不(bu)用將壓(ya)(ya)敏(min)電(dian)(dian)阻直接(jie)置入被測對象(xiang)(xiang)內(nei)部，只(zhi)需將被測對象(xiang)(xiang)的(de)點接(jie)觸(chu)部位(wei)與(yu)壓(ya)(ya)敏(min)電(dian)(dian)阻所對應的(de)壓(ya)(ya)敏(min)體室的(de)聚氯(lv)乙烯PVC絕緣(yuan)基片(pian)(pian)直接(jie)接(jie)觸(chu)即可；同時壓(ya)(ya)敏(min)電(dian)(dian)阻材料在(zai)工作過程中(zhong)始終受到了聚氯(lv)乙烯PVC片(pian)(pian)的(de)絕緣(yuan)保(bao)護(hu)。由于(yu)(yu)兩條(tiao)銀導電(dian)(dian)電(dian)(dian)極均處于(yu)(yu)羥乙基纖維(wei)素HEC的(de)絕緣(yuan)保(bao)護(hu)下(xia)，可有效防止(zhi)兩電(dian)(dian)極間(jian)間(jian)距太(tai)小而引起的(de)電(dian)(dian)子遷移所造成(cheng)的(de)電(dian)(dian)極間(jian)短路現(xian)象(xiang)(xiang)。該柔性單(dan)點力片(pian)(pian)式傳(chuan)感器(qi)只(zhi)有電(dian)(dian)極引出片(pian)(pian)部分區域外露，因此具有抗強干擾的(de)優點。

本(ben)發明采(cai)用基于絲網(wang)印刷工藝的(de)制(zhi)造方(fang)法，使制(zhi)得的(de)單點力傳感(gan)器(qi)具有(you)重量輕(qing)、體積小(xiao)(片狀)、成(cheng)本(ben)低、制(zhi)作(zuo)簡(jian)單、可批量化生產的(de)特(te)點，并可重復使用、操(cao)作(zuo)便捷。該傳感(gan)器(qi)可應(ying)(ying)用于工作(zuo)空間(jian)狹小(xiao)的(de)某一點接觸物體間(jian)的(de)壓力或集中力的(de)檢測以及類似(si)特(te)殊應(ying)(ying)用場(chang)合。

附圖說明

圖(tu)(tu)1為本發(fa)明柔性單點力片(pian)式(shi)傳感器結(jie)構示意(yi)圖(tu)(tu)。圖(tu)(tu)中(zhong)：1、下基(ji)板；2、粘(zhan)接層；3、電極(ji)引出片(pian)；4、上基(ji)板；5、電極(ji)保護膜(mo)；6、印刷電極(ji)；7、壓敏體。

圖2為圖1的俯視其及印刷電極的局(ju)部剖視圖。圖中：8、上基板凸(tu)起；9、電極連接片。

圖(tu)3為(wei)圖(tu)2的剖面圖(tu)。圖(tu)中：10、下(xia)基板(ban)凹陷(xian)。

圖(tu)4為本(ben)發(fa)明柔(rou)性單點力片式(shi)傳感器一(yi)個應(ying)用實(shi)例(li)的測量電路(lu)原(yuan)理圖(tu)。

具(ju)體(ti)實施方式

下面結合附圖及實施例對本(ben)發明作進一步的詳細說(shuo)明。

如圖(tu)1-圖(tu)3所示，一(yi)(yi)種(zhong)柔性(xing)單點(dian)力片(pian)式(shi)傳感器，包括上(shang)(shang)(shang)基板(ban)(ban)4和(he)下基板(ban)(ban)1、壓(ya)(ya)敏(min)(min)體7、設(she)置在(zai)(zai)(zai)壓(ya)(ya)敏(min)(min)體7垂直兩端(duan)(duan)面的(de)兩個(ge)電(dian)(dian)(dian)極(ji)連(lian)接(jie)(jie)(jie)片(pian)9，上(shang)(shang)(shang)、下基板(ban)(ban)之間由環氧樹脂粘接(jie)(jie)(jie)層2封接(jie)(jie)(jie)；上(shang)(shang)(shang)、下基板(ban)(ban)4、1可由聚(ju)氯(lv)乙烯(PVC)制成(cheng)相(xiang)同大小尺寸的(de)矩形基片(pian)；在(zai)(zai)(zai)靠(kao)近上(shang)(shang)(shang)基板(ban)(ban)4長度方向的(de)左側設(she)置有一(yi)(yi)凸起(qi)8；在(zai)(zai)(zai)相(xiang)對(dui)該凸起(qi)8的(de)下基板(ban)(ban)上(shang)(shang)(shang)設(she)置有一(yi)(yi)凹(ao)陷10，該凹(ao)陷與凸起(qi)之間形成(cheng)一(yi)(yi)個(ge)的(de)密閉壓(ya)(ya)敏(min)(min)體室，其(qi)中封裝有壓(ya)(ya)敏(min)(min)體7及(ji)電(dian)(dian)(dian)極(ji)連(lian)接(jie)(jie)(jie)片(pian)9，壓(ya)(ya)敏(min)(min)體室的(de)大小剛(gang)好與壓(ya)(ya)敏(min)(min)體7的(de)大小吻合，壓(ya)(ya)敏(min)(min)體7為圓片(pian)或方塊形壓(ya)(ya)敏(min)(min)電(dian)(dian)(dian)阻；下基板(ban)(ban)1上(shang)(shang)(shang)設(she)置有兩條沿其(qi)長度方向相(xiang)互平行的(de)印(yin)刷電(dian)(dian)(dian)極(ji)6，印(yin)刷電(dian)(dian)(dian)極(ji)6為銀導電(dian)(dian)(dian)帶(dai)狀薄(bo)膜(mo)。每條印(yin)刷電(dian)(dian)(dian)極(ji)在(zai)(zai)(zai)凹(ao)陷右邊(bian)沿處的(de)一(yi)(yi)端(duan)(duan)連(lian)接(jie)(jie)(jie)一(yi)(yi)個(ge)電(dian)(dian)(dian)極(ji)連(lian)接(jie)(jie)(jie)片(pian)9；遠離(li)凹(ao)陷到(dao)下基板(ban)(ban)1右側處的(de)另一(yi)(yi)端(duan)(duan)連(lian)接(jie)(jie)(jie)一(yi)(yi)個(ge)電(dian)(dian)(dian)極(ji)引(yin)(yin)出(chu)片(pian)3，該電(dian)(dian)(dian)極(ji)引(yin)(yin)出(chu)片(pian)3外露下基板(ban)(ban)右側；印(yin)刷電(dian)(dian)(dian)極(ji)6從連(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)連(lian)接(jie)(jie)(jie)片(pian)9到(dao)連(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)引(yin)(yin)出(chu)片(pian)3的(de)一(yi)(yi)段上(shang)(shang)(shang)表面設(she)置有電(dian)(dian)(dian)極(ji)保護(hu)膜(mo)5，該電(dian)(dian)(dian)極(ji)保護(hu)膜(mo)為羥(qian)乙基纖維素(HEC)膜(mo)層。

以上(shang)柔性單點力片式傳感(gan)器制造方法，包括下述步驟：

a.先制備形狀大小相同的上基板(ban)和下(xia)基板(ban)，在上基板(ban)長(chang)度(du)方向的一側(ce)設置(zhi)一凸(tu)起；在相對該(gai)凸(tu)起的下(xia)基板(ban)上設置(zhi)一凹(ao)陷；

b.將下基(ji)板1固(gu)定在(zai)絲網(wang)印(yin)刷(shua)機(ji)的(de)印(yin)刷(shua)臺上，用導電(dian)(dian)料漿沿下基(ji)板長(chang)度方向從遠離(li)(li)凹陷(xian)一(yi)側到(dao)凹陷(xian)的(de)上表面(mian)印(yin)制兩條印(yin)刷(shua)電(dian)(dian)極，干(gan)燥后(hou)，在(zai)下基(ji)板遠離(li)(li)凹陷(xian)的(de)一(yi)側設置兩個外露的(de)電(dian)(dian)極引出片3。

c.在(zai)(zai)下基(ji)(ji)板(ban)凹陷中涂(tu)敷壓(ya)敏(min)電阻油墨，并(bing)放置一個(ge)壓(ya)敏(min)體，該壓(ya)敏(min)體上(shang)、下端(duan)面(mian)事先分(fen)(fen)別(bie)焊接(jie)好兩個(ge)電極(ji)連接(jie)片(pian)(pian)9，位于壓(ya)敏(min)體上(shang)、下端(duan)面(mian)的(de)兩電極(ji)連接(jie)片(pian)(pian)9分(fen)(fen)別(bie)連接(jie)至(zhi)位于下基(ji)(ji)板(ban)上(shang)的(de)兩條印刷電極(ji)6，兩條印刷電極(ji)6的(de)另一端(duan)連接(jie)外露的(de)兩個(ge)電極(ji)引出片(pian)(pian)3；同(tong)時，在(zai)(zai)上(shang)基(ji)(ji)板(ban)4的(de)凸起內(nei)表面(mian)上(shang)涂(tu)敷壓(ya)敏(min)電阻油墨。

d.在(zai)下基板的(de)兩條印刷電極6上(shang)從連(lian)接(jie)電極連(lian)接(jie)片9到連(lian)接(jie)電極引出片3的(de)一段上(shang)表面涂敷一層電極保護膜并干燥。

e.將(jiang)上(shang)、下(xia)基板用粘接層復合，使所(suo)述(shu)凸起與凹陷之(zhi)間(jian)形成一個的(de)密閉壓敏(min)體(ti)(ti)室，將(jiang)壓敏(min)體(ti)(ti)及電極連接片封(feng)裝在(zai)其內，壓敏(min)體(ti)(ti)室的(de)大(da)小剛好與壓敏(min)體(ti)(ti)的(de)大(da)小吻合，同時(shi)兩條印刷電極相互平行。

當上述絲網印刷單點力片(pian)式傳感器與外(wai)接(jie)電(dian)路連(lian)接(jie)并通過(guo)能正常工作的測(ce)試(shi)后，該傳感器外(wai)露部(bu)分電(dian)極引出(chu)片(pian)3與外(wai)接(jie)導(dao)線連(lian)接(jie)部(bu)分用絕緣硅膠將其覆蓋(gai)以(yi)防銀電(dian)極長期處于在空氣中(zhong)被氧化而削弱或喪失了其導(dao)電(dian)性能。

本(ben)發明柔性單(dan)點力片式(shi)傳感器的(de)(de)(de)檢測原(yuan)理如(ru)下：當處(chu)于點接觸狀態(tai)時物體間的(de)(de)(de)一集中載荷(集中力)作(zuo)用于壓(ya)(ya)(ya)敏(min)電(dian)(dian)阻(zu)7上時，壓(ya)(ya)(ya)敏(min)電(dian)(dian)阻(zu)因受到了壓(ya)(ya)(ya)力作(zuo)用便(bian)發生了一定的(de)(de)(de)壓(ya)(ya)(ya)縮(suo)變(bian)形，從(cong)而引起了壓(ya)(ya)(ya)敏(min)電(dian)(dian)阻(zu)值(zhi)的(de)(de)(de)變(bian)化，反(fan)(fan)映在電(dian)(dian)路上便(bian)是(shi)兩銀(yin)導(dao)電(dian)(dian)電(dian)(dian)極6之(zhi)間電(dian)(dian)壓(ya)(ya)(ya)值(zhi)的(de)(de)(de)改變(bian)；根據壓(ya)(ya)(ya)敏(min)電(dian)(dian)阻(zu)上電(dian)(dian)壓(ya)(ya)(ya)值(zhi)相對于最初電(dian)(dian)壓(ya)(ya)(ya)值(zhi)的(de)(de)(de)變(bian)化量便(bian)可(ke)反(fan)(fan)映出(chu)點接觸處(chu)壓(ya)(ya)(ya)力或集中載荷的(de)(de)(de)大小。集中載荷與軸向長度(du)、電(dian)(dian)阻(zu)阻(zu)值(zhi)與軸向長度(du)的(de)(de)(de)關系、電(dian)(dian)壓(ya)(ya)(ya)與電(dian)(dian)阻(zu)的(de)(de)(de)關系如(ru)下：

ΔL=FLES---(1)

其(qi)中：L——壓敏(min)電阻的原(yuan)始(shi)厚(hou)度；

S——壓敏電阻的橫截面(mian)面(mian)積；

F——作(zuo)用于壓(ya)敏電阻(zu)上的集中(zhong)載(zai)荷；

E——壓敏電(dian)阻的(de)彈性(xing)模量；

ΔL——壓敏電(dian)阻油墨厚度(du)的(de)改(gai)變量。

R=ρLS---(2)

其中：L——壓敏電阻油墨的厚度；

S——壓(ya)敏電阻油墨(mo)的橫截面(mian)(mian)面(mian)(mian)積；

ρ——壓敏(min)電阻油墨的電阻率；

R——壓敏電阻油墨的電阻值。

                U＝IR        (3)

其中：I——流經壓(ya)敏電(dian)阻(zu)的電(dian)流值；

R——壓敏電(dian)阻(zu)油(you)墨的電(dian)阻(zu)值；

U——壓敏電(dian)阻(zu)油墨的(de)電(dian)壓值；

如(ru)圖4所示(shi)，絲(si)網(wang)印刷單(dan)點(dian)力(li)(li)片式傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)為只受(shou)到(dao)軸(zhou)向壓(ya)(ya)(ya)(ya)(ya)縮(suo)變(bian)形而引起了其阻(zu)(zu)(zu)值的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，因(yin)此(ci)在測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)可(ke)(ke)以被當作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中的(de)(de)(de)(de)(de)(de)(de)(de)(de)可(ke)(ke)變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)對待；同(tong)時(shi)又由于(yu)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)引起了加(jia)在壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)兩端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，因(yin)此(ci)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)可(ke)(ke)以被當作(zuo)檢(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)輸入(ru)變(bian)量(liang)信(xin)(xin)(xin)(xin)號(hao)(hao)。由于(yu)單(dan)點(dian)力(li)(li)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)外(wai)(wai)力(li)(li)作(zuo)用(yong)而引起了加(jia)在其兩端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，反(fan)相(xiang)(xiang)比(bi)例(li)放(fang)(fang)(fang)(fang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)輸入(ru)端(duan)恰好是壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)端(duan)；因(yin)此(ci)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)必然引起了反(fan)相(xiang)(xiang)比(bi)例(li)放(fang)(fang)(fang)(fang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)I輸出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，也(ye)就是說(shuo)單(dan)點(dian)力(li)(li)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)(qi)受(shou)外(wai)(wai)力(li)(li)作(zuo)用(yong)是可(ke)(ke)以引起測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中相(xiang)(xiang)應電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)。當外(wai)(wai)力(li)(li)作(zuo)用(yong)于(yu)單(dan)點(dian)力(li)(li)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)(qi)后由于(yu)壓(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值的(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)而產(chan)生了一定的(de)(de)(de)(de)(de)(de)(de)(de)(de)微弱(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)，通(tong)(tong)(tong)過(guo)反(fan)相(xiang)(xiang)比(bi)例(li)放(fang)(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)(qi)(qi)I將該(gai)信(xin)(xin)(xin)(xin)號(hao)(hao)放(fang)(fang)(fang)(fang)大(da)(da)；然后再(zai)通(tong)(tong)(tong)過(guo)低通(tong)(tong)(tong)濾波器(qi)(qi)(qi)(qi)(qi)將其他高頻(pin)干(gan)擾信(xin)(xin)(xin)(xin)號(hao)(hao)過(guo)濾或者(zhe)去除；接(jie)(jie)著再(zai)通(tong)(tong)(tong)過(guo)反(fan)相(xiang)(xiang)比(bi)例(li)放(fang)(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)(qi)(qi)II將電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)還原(yuan)到(dao)最初的(de)(de)(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)位(因(yin)為前后經(jing)過(guo)了兩次反(fan)相(xiang)(xiang)放(fang)(fang)(fang)(fang)大(da)(da)，因(yin)此(ci)經(jing)過(guo)處(chu)(chu)(chu)理(li)后的(de)(de)(de)(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)(xin)號(hao)(hao)可(ke)(ke)以恢復到(dao)原(yuan)來(lai)的(de)(de)(de)(de)(de)(de)(de)(de)(de)正電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)值，同(tong)時(shi)將微弱(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)值放(fang)(fang)(fang)(fang)大(da)(da)了)；最后再(zai)通(tong)(tong)(tong)過(guo)A/D轉換(huan)(huan)器(qi)(qi)(qi)(qi)(qi)限壓(ya)(ya)(ya)(ya)(ya)轉換(huan)(huan)將外(wai)(wai)力(li)(li)引起的(de)(de)(de)(de)(de)(de)(de)(de)(de)并經(jing)過(guo)處(chu)(chu)(chu)理(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)轉換(huan)(huan)為計(ji)算機能(neng)識別的(de)(de)(de)(de)(de)(de)(de)(de)(de)數字電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)號(hao)(hao)，當然也(ye)可(ke)(ke)以直(zhi)接(jie)(jie)將反(fan)相(xiang)(xiang)比(bi)例(li)放(fang)(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)(qi)(qi)II處(chu)(chu)(chu)理(li)后的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)號(hao)(hao)直(zhi)接(jie)(jie)輸入(ru)至可(ke)(ke)以接(jie)(jie)收該(gai)信(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)模擬顯示(shi)儀器(qi)(qi)(qi)(qi)(qi)或處(chu)(chu)(chu)理(li)儀器(qi)(qi)(qi)(qi)(qi)例(li)如(ru)模擬信(xin)(xin)(xin)(xin)號(hao)(hao)示(shi)波顯示(shi)器(qi)(qi)(qi)(qi)(qi)或者(zhe)模擬信(xin)(xin)(xin)(xin)號(hao)(hao)處(chu)(chu)(chu)理(li)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)。