技術領域

本發明涉及一(yi)種傳感器及其制造(zao)方法，特(te)別涉及一(yi)種用(yong)于在(zai)某(mou)一(yi)狹小接(jie)觸區域中(zhong)對一(yi)點(dian)接(jie)觸物(wu)體間的壓力或(huo)集中(zhong)力進行檢測的柔(rou)性單點(dian)力片式(shi)傳感器及其制造(zao)方法。

背景技術

壓力(li)(li)(li)(li)傳(chuan)感器及檢(jian)測技術(shu)在(zai)航空(kong)航天、軍(jun)事工(gong)業(ye)、汽(qi)車、船舶制(zhi)造、工(gong)業(ye)自動化、醫(yi)學研究(jiu)、生物醫(yi)療等(deng)領(ling)域(yu)中(zhong)發揮著重(zhong)要的(de)作用(yong)。然而在(zai)上(shang)述應用(yong)領(ling)域(yu)，許多場(chang)合需在(zai)某(mou)一狹小空(kong)間(jian)中(zhong)對某(mou)一點接觸(chu)(chu)(chu)物體間(jian)的(de)壓力(li)(li)(li)(li)或集(ji)中(zhong)力(li)(li)(li)(li)進行檢(jian)測，例如點接觸(chu)(chu)(chu)物體間(jian)在(zai)運動過程(cheng)中(zhong)摩擦力(li)(li)(li)(li)相(xiang)互(hu)作用(yong)過程(cheng)的(de)研究(jiu)、例如檢(jian)測空(kong)間(jian)凸輪與滾子(zi)從動件處于點接觸(chu)(chu)(chu)狀態下的(de)相(xiang)互(hu)作用(yong)力(li)(li)(li)(li)、檢(jian)測某(mou)一對牙齒嚙合時的(de)相(xiang)互(hu)作用(yong)力(li)(li)(li)(li)等(deng)。由于受(shou)到傳(chuan)感器重(zhong)量、體積以及工(gong)作空(kong)間(jian)(如狹縫(feng))的(de)限制(zhi)，這時傳(chuan)統壓力(li)(li)(li)(li)傳(chuan)感器便(bian)不能(neng)用(yong)于上(shang)述場(chang)合下的(de)使用(yong)來檢(jian)測某(mou)一點接觸(chu)(chu)(chu)物體間(jian)的(de)壓力(li)(li)(li)(li)或集(ji)中(zhong)力(li)(li)(li)(li)。即便(bian)勉強使用(yong)，也不能(neng)滿足操作便(bian)捷的(de)要求，

發明內容

本(ben)發(fa)明(ming)針對(dui)(dui)傳(chuan)統壓(ya)力(li)(li)傳(chuan)感(gan)(gan)器不能(neng)對(dui)(dui)某(mou)一(yi)點接觸(chu)(chu)物體(ti)間壓(ya)力(li)(li)進行(xing)檢(jian)測、體(ti)積大、重量重、操作(zuo)(zuo)不方便的(de)缺(que)點；提供了一(yi)種能(neng)夠檢(jian)測出某(mou)一(yi)點接觸(chu)(chu)物體(ti)間壓(ya)力(li)(li)的(de)柔(rou)性單點力(li)(li)片(pian)式傳(chuan)感(gan)(gan)器，該(gai)傳(chuan)感(gan)(gan)器具(ju)有體(ti)積小、重量輕、制作(zuo)(zuo)簡單、可低成本(ben)批量化生(sheng)產(chan)的(de)特(te)點，并且可重復使用(yong)、操作(zuo)(zuo)簡便。

本發明的(de)另(ling)一(yi)個(ge)目的(de)是提供一(yi)種該傳(chuan)感器的(de)制造方法(fa)。

為達到上述目的(de)，本發明是(shi)采取如(ru)下技術(shu)方案予以實現的(de)：

一種柔性單點力片(pian)式傳感器，包(bao)括壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)、分(fen)別設(she)置在壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)上下端(duan)面的(de)(de)(de)(de)(de)兩(liang)個電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)，其(qi)(qi)特征在于，還(huan)包(bao)括有(you)(you)形(xing)狀大(da)小相同的(de)(de)(de)(de)(de)上基板(ban)(ban)和下基板(ban)(ban)，上、下基板(ban)(ban)之(zhi)間由(you)粘接(jie)層封接(jie)；在上基板(ban)(ban)長度(du)方(fang)向的(de)(de)(de)(de)(de)一側設(she)置有(you)(you)一凸起；在相對該凸起的(de)(de)(de)(de)(de)下基板(ban)(ban)上設(she)置有(you)(you)一凹(ao)陷，該凹(ao)陷與所(suo)述凸起之(zhi)間形(xing)成一個密閉的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)室，其(qi)(qi)中(zhong)封裝有(you)(you)所(suo)述的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)及(ji)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)，所(suo)述壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)室的(de)(de)(de)(de)(de)大(da)小剛(gang)好與壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)的(de)(de)(de)(de)(de)大(da)小吻合；所(suo)述下基板(ban)(ban)1沿其(qi)(qi)長度(du)方(fang)向設(she)置有(you)(you)兩(liang)條(tiao)相互平行的(de)(de)(de)(de)(de)印(yin)刷(shua)(shua)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)6，每(mei)個印(yin)刷(shua)(shua)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)分(fen)別連(lian)(lian)接(jie)位于壓(ya)(ya)(ya)(ya)敏體(ti)(ti)(ti)上或下端(duan)面的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)9和伸出(chu)(chu)下基板(ban)(ban)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)引出(chu)(chu)片(pian)3；所(suo)述下基板(ban)(ban)上的(de)(de)(de)(de)(de)兩(liang)條(tiao)印(yin)刷(shua)(shua)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)6從連(lian)(lian)接(jie)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)9到連(lian)(lian)接(jie)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)引出(chu)(chu)片(pian)3一段的(de)(de)(de)(de)(de)上表(biao)面設(she)置有(you)(you)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)保護膜(mo)。

一種上(shang)述(shu)柔性單點(dian)力片式(shi)傳感器的制造方法，其(qi)特征在于，包括如(ru)下步(bu)驟：

a.先制備形狀大小相(xiang)同的(de)上基板(ban)和下基板(ban)，在上基板(ban)長(chang)度方向的(de)一側設(she)置(zhi)一凸(tu)起(qi)；在相(xiang)對該凸(tu)起(qi)的(de)下基板(ban)上設(she)置(zhi)一凹陷；

b.將下(xia)(xia)(xia)基(ji)(ji)板(ban)1固定(ding)在絲(si)網印(yin)刷(shua)(shua)機的印(yin)刷(shua)(shua)臺上(shang)，用導電料漿沿下(xia)(xia)(xia)基(ji)(ji)板(ban)長度(du)方向(xiang)從遠離凹陷一(yi)側(ce)到(dao)凹陷的上(shang)表面印(yin)制(zhi)兩(liang)條(tiao)印(yin)刷(shua)(shua)電極，干燥后，在下(xia)(xia)(xia)基(ji)(ji)板(ban)遠離凹陷的一(yi)側(ce)設置兩(liang)個(ge)外露的電極引出片3。

c.在下基(ji)(ji)板(ban)凹(ao)陷中涂(tu)敷(fu)(fu)壓(ya)敏(min)電阻(zu)油(you)墨，并放置一(yi)個(ge)(ge)壓(ya)敏(min)體，該壓(ya)敏(min)體上、下端面事先分別焊接好兩個(ge)(ge)電極連(lian)接片(pian)9，位于壓(ya)敏(min)體上、下端面的(de)(de)兩電極連(lian)接片(pian)9分別連(lian)接至位于下基(ji)(ji)板(ban)上的(de)(de)兩條(tiao)印刷電極6的(de)(de)一(yi)端，兩條(tiao)印刷電極6的(de)(de)另一(yi)端連(lian)接外露的(de)(de)兩個(ge)(ge)電極引出片(pian)3；同時，在上基(ji)(ji)板(ban)4的(de)(de)凸起內表面上涂(tu)敷(fu)(fu)壓(ya)敏(min)電阻(zu)油(you)墨。

d.在(zai)下基板的兩條印刷電極6上(shang)從(cong)連(lian)接(jie)電極連(lian)接(jie)片9到連(lian)接(jie)電極引出片3的一段上(shang)表面涂敷(fu)一層電極保(bao)護膜并干燥。

e.將(jiang)(jiang)上、下基板用粘接層復(fu)合(he)，使所述凸起(qi)與凹陷之(zhi)間形成(cheng)一個的密(mi)閉壓敏體室，將(jiang)(jiang)壓敏體及(ji)電極(ji)連(lian)接片封裝在其(qi)內(nei)，壓敏體室的大(da)小(xiao)(xiao)剛好與壓敏體的大(da)小(xiao)(xiao)吻(wen)合(he)，同時兩條(tiao)印刷(shua)電極(ji)相(xiang)互平行。

以上(shang)方法中，所(suo)述(shu)的印(yin)刷(shua)電(dian)極用(yong)導(dao)(dao)電(dian)漿料為銀導(dao)(dao)電(dian)漿料；所(suo)述(shu)的電(dian)極保護膜材料采(cai)(cai)用(yong)羥乙(yi)基(ji)纖維素；所(suo)述(shu)的壓敏電(dian)阻油墨采(cai)(cai)用(yong)碳二(er)硫化鉬油墨；所(suo)述(shu)的上(shang)、下基(ji)板(ban)采(cai)(cai)用(yong)聚(ju)氯(lv)乙(yi)烯材料制成矩(ju)形(xing)基(ji)片；所(suo)述(shu)的粘接層(ceng)采(cai)(cai)用(yong)環氧(yang)樹脂。

本發(fa)明的(de)柔性單點(dian)力片(pian)式(shi)傳(chuan)感器不需(xu)要外加保護(hu)裝置，不用將(jiang)壓(ya)敏電(dian)阻直(zhi)接(jie)置入被測對(dui)象內(nei)部(bu)(bu)(bu)，只需(xu)將(jiang)被測對(dui)象的(de)點(dian)接(jie)觸部(bu)(bu)(bu)位(wei)與(yu)壓(ya)敏電(dian)阻所對(dui)應的(de)壓(ya)敏體室的(de)聚氯乙(yi)(yi)烯(xi)PVC絕(jue)緣基片(pian)直(zhi)接(jie)接(jie)觸即可；同時(shi)壓(ya)敏電(dian)阻材料在工作過程中始終受到(dao)了(le)聚氯乙(yi)(yi)烯(xi)PVC片(pian)的(de)絕(jue)緣保護(hu)。由于兩(liang)條銀(yin)導電(dian)電(dian)極均處于羥乙(yi)(yi)基纖維素HEC的(de)絕(jue)緣保護(hu)下，可有(you)效防止兩(liang)電(dian)極間(jian)(jian)間(jian)(jian)距太小而(er)引起的(de)電(dian)子遷移所造成的(de)電(dian)極間(jian)(jian)短路現象。該柔性單點(dian)力片(pian)式(shi)傳(chuan)感器只有(you)電(dian)極引出片(pian)部(bu)(bu)(bu)分區(qu)域外露，因此(ci)具有(you)抗強干擾(rao)的(de)優點(dian)。

本(ben)發明采用(yong)(yong)基于絲網印刷工(gong)藝的(de)制造(zao)方法(fa)，使制得(de)的(de)單(dan)(dan)點力傳(chuan)感器具有重量(liang)(liang)輕、體積小(片(pian)狀)、成(cheng)本(ben)低、制作(zuo)(zuo)簡單(dan)(dan)、可批量(liang)(liang)化生產的(de)特點，并可重復使用(yong)(yong)、操作(zuo)(zuo)便捷(jie)。該傳(chuan)感器可應(ying)(ying)用(yong)(yong)于工(gong)作(zuo)(zuo)空間(jian)狹小的(de)某一點接(jie)觸物體間(jian)的(de)壓力或集中力的(de)檢測(ce)以(yi)及類似特殊應(ying)(ying)用(yong)(yong)場合。

附圖說明

圖1為本發(fa)明(ming)柔性單(dan)點(dian)力片式(shi)傳感(gan)器結構示意圖。圖中(zhong)：1、下基(ji)(ji)板；2、粘接層(ceng)；3、電(dian)極引出片；4、上基(ji)(ji)板；5、電(dian)極保護膜(mo)；6、印刷電(dian)極；7、壓(ya)敏體(ti)。

圖2為圖1的(de)俯視(shi)其(qi)及印刷電(dian)極(ji)的(de)局部剖(pou)視(shi)圖。圖中：8、上基板凸(tu)起；9、電(dian)極(ji)連接片(pian)。

圖3為圖2的剖面圖。圖中(zhong)：10、下(xia)基板凹陷(xian)。

圖(tu)4為(wei)本(ben)發明柔性單點力(li)片式傳感器一個應用實例的測量電路原理圖(tu)。

具體實(shi)施(shi)方式

下面結(jie)合(he)附(fu)圖及實施例對本(ben)發明作進一(yi)步的詳細說明。

如(ru)圖1-圖3所示，一(yi)(yi)(yi)種柔性單(dan)點力片(pian)式傳感器，包括上(shang)基(ji)(ji)板(ban)(ban)4和下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)1、壓(ya)敏體(ti)(ti)(ti)7、設(she)置在(zai)(zai)壓(ya)敏體(ti)(ti)(ti)7垂直兩(liang)端(duan)面的(de)兩(liang)個(ge)(ge)電(dian)極(ji)連(lian)(lian)接(jie)(jie)(jie)片(pian)9，上(shang)、下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)之(zhi)間由環氧樹脂粘(zhan)接(jie)(jie)(jie)層2封(feng)接(jie)(jie)(jie)；上(shang)、下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)4、1可由聚氯乙(yi)烯(xi)(PVC)制成(cheng)(cheng)相(xiang)(xiang)同大小尺寸(cun)的(de)矩(ju)形基(ji)(ji)片(pian)；在(zai)(zai)靠(kao)近上(shang)基(ji)(ji)板(ban)(ban)4長(chang)度方(fang)向的(de)左側設(she)置有(you)(you)一(yi)(yi)(yi)凸(tu)起8；在(zai)(zai)相(xiang)(xiang)對該凸(tu)起8的(de)下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)上(shang)設(she)置有(you)(you)一(yi)(yi)(yi)凹陷(xian)(xian)10，該凹陷(xian)(xian)與凸(tu)起之(zhi)間形成(cheng)(cheng)一(yi)(yi)(yi)個(ge)(ge)的(de)密(mi)閉壓(ya)敏體(ti)(ti)(ti)室，其中封(feng)裝有(you)(you)壓(ya)敏體(ti)(ti)(ti)7及電(dian)極(ji)連(lian)(lian)接(jie)(jie)(jie)片(pian)9，壓(ya)敏體(ti)(ti)(ti)室的(de)大小剛好與壓(ya)敏體(ti)(ti)(ti)7的(de)大小吻合，壓(ya)敏體(ti)(ti)(ti)7為(wei)圓片(pian)或方(fang)塊形壓(ya)敏電(dian)阻；下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)1上(shang)設(she)置有(you)(you)兩(liang)條沿(yan)其長(chang)度方(fang)向相(xiang)(xiang)互平(ping)行的(de)印刷電(dian)極(ji)6，印刷電(dian)極(ji)6為(wei)銀(yin)導電(dian)帶(dai)狀薄膜(mo)。每條印刷電(dian)極(ji)在(zai)(zai)凹陷(xian)(xian)右邊沿(yan)處的(de)一(yi)(yi)(yi)端(duan)連(lian)(lian)接(jie)(jie)(jie)一(yi)(yi)(yi)個(ge)(ge)電(dian)極(ji)連(lian)(lian)接(jie)(jie)(jie)片(pian)9；遠離凹陷(xian)(xian)到(dao)下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)1右側處的(de)另一(yi)(yi)(yi)端(duan)連(lian)(lian)接(jie)(jie)(jie)一(yi)(yi)(yi)個(ge)(ge)電(dian)極(ji)引出(chu)片(pian)3，該電(dian)極(ji)引出(chu)片(pian)3外露下(xia)(xia)(xia)基(ji)(ji)板(ban)(ban)右側；印刷電(dian)極(ji)6從連(lian)(lian)接(jie)(jie)(jie)電(dian)極(ji)連(lian)(lian)接(jie)(jie)(jie)片(pian)9到(dao)連(lian)(lian)接(jie)(jie)(jie)電(dian)極(ji)引出(chu)片(pian)3的(de)一(yi)(yi)(yi)段上(shang)表面設(she)置有(you)(you)電(dian)極(ji)保(bao)護膜(mo)5，該電(dian)極(ji)保(bao)護膜(mo)為(wei)羥(qian)乙(yi)基(ji)(ji)纖維素(su)(HEC)膜(mo)層。

以(yi)上柔(rou)性單點力(li)片式(shi)傳感(gan)器制造方法，包括下(xia)述步(bu)驟：

a.先制備形狀大小(xiao)相同的上(shang)基(ji)板(ban)和下基(ji)板(ban)，在上(shang)基(ji)板(ban)長度方(fang)向的一(yi)側設(she)置一(yi)凸(tu)起(qi)；在相對該凸(tu)起(qi)的下基(ji)板(ban)上(shang)設(she)置一(yi)凹陷；

b.將下(xia)(xia)基板(ban)1固定在絲(si)網印刷機的印刷臺上，用(yong)導電料漿沿下(xia)(xia)基板(ban)長(chang)度方向從遠離凹(ao)陷(xian)(xian)一(yi)側到(dao)凹(ao)陷(xian)(xian)的上表面(mian)印制兩(liang)條(tiao)印刷電極，干燥后(hou)，在下(xia)(xia)基板(ban)遠離凹(ao)陷(xian)(xian)的一(yi)側設置兩(liang)個外露的電極引出片3。

c.在(zai)下(xia)基(ji)板凹陷中涂(tu)(tu)敷壓(ya)敏(min)電阻油墨，并放置(zhi)一個壓(ya)敏(min)體，該壓(ya)敏(min)體上(shang)、下(xia)端(duan)(duan)面事(shi)先分(fen)別焊接好兩個電極(ji)(ji)連(lian)接片(pian)9，位于壓(ya)敏(min)體上(shang)、下(xia)端(duan)(duan)面的兩電極(ji)(ji)連(lian)接片(pian)9分(fen)別連(lian)接至位于下(xia)基(ji)板上(shang)的兩條印刷電極(ji)(ji)6，兩條印刷電極(ji)(ji)6的另一端(duan)(duan)連(lian)接外露的兩個電極(ji)(ji)引出片(pian)3；同時，在(zai)上(shang)基(ji)板4的凸(tu)起內表面上(shang)涂(tu)(tu)敷壓(ya)敏(min)電阻油墨。

d.在下基板的兩條印刷電極(ji)(ji)6上從連接電極(ji)(ji)連接片9到連接電極(ji)(ji)引出(chu)片3的一(yi)段(duan)上表面涂敷一(yi)層電極(ji)(ji)保護(hu)膜并(bing)干燥。

e.將上、下基板用(yong)粘接層復合，使所述凸起(qi)與凹陷(xian)之間形(xing)成一(yi)個的(de)密閉壓(ya)敏體(ti)室，將壓(ya)敏體(ti)及電極連(lian)接片封裝在其內，壓(ya)敏體(ti)室的(de)大小(xiao)剛(gang)好與壓(ya)敏體(ti)的(de)大小(xiao)吻合，同時兩條印刷電極相(xiang)互平行(xing)。

當上述(shu)絲(si)網印(yin)刷單(dan)點(dian)力片(pian)式(shi)傳(chuan)感器與外接電路連接并(bing)通過能正常工作的測(ce)試后，該傳(chuan)感器外露(lu)部(bu)分(fen)電極引(yin)出片(pian)3與外接導(dao)線連接部(bu)分(fen)用絕緣硅膠將(jiang)其覆蓋以(yi)防銀電極長(chang)期處(chu)于(yu)在空氣中被氧(yang)化而削弱(ruo)或喪(sang)失了其導(dao)電性(xing)能。

本發明柔性單(dan)點力(li)片式傳感器的(de)(de)檢測(ce)原理如(ru)下(xia)：當處(chu)于點接(jie)觸(chu)狀態時物體間(jian)的(de)(de)一集(ji)中載(zai)荷(he)(集(ji)中力(li))作(zuo)用(yong)于壓(ya)(ya)(ya)敏電(dian)(dian)阻(zu)7上時，壓(ya)(ya)(ya)敏電(dian)(dian)阻(zu)因受到了(le)壓(ya)(ya)(ya)力(li)作(zuo)用(yong)便發生了(le)一定的(de)(de)壓(ya)(ya)(ya)縮變(bian)形(xing)，從(cong)而引起(qi)了(le)壓(ya)(ya)(ya)敏電(dian)(dian)阻(zu)值的(de)(de)變(bian)化(hua)，反(fan)映(ying)在電(dian)(dian)路(lu)上便是兩銀導電(dian)(dian)電(dian)(dian)極6之間(jian)電(dian)(dian)壓(ya)(ya)(ya)值的(de)(de)改(gai)變(bian)；根據壓(ya)(ya)(ya)敏電(dian)(dian)阻(zu)上電(dian)(dian)壓(ya)(ya)(ya)值相對于最初電(dian)(dian)壓(ya)(ya)(ya)值的(de)(de)變(bian)化(hua)量(liang)便可反(fan)映(ying)出點接(jie)觸(chu)處(chu)壓(ya)(ya)(ya)力(li)或集(ji)中載(zai)荷(he)的(de)(de)大小(xiao)。集(ji)中載(zai)荷(he)與(yu)軸向(xiang)長度、電(dian)(dian)阻(zu)阻(zu)值與(yu)軸向(xiang)長度的(de)(de)關系(xi)、電(dian)(dian)壓(ya)(ya)(ya)與(yu)電(dian)(dian)阻(zu)的(de)(de)關系(xi)如(ru)下(xia)：

ΔL=FLES---(1)

其(qi)中：L——壓(ya)敏電阻的原(yuan)始厚度；

S——壓(ya)敏電阻的橫截(jie)面面積；

F——作用于壓敏電阻(zu)上的集中載荷；

E——壓敏(min)電阻的彈性模量；

ΔL——壓敏電阻油墨厚度的改變量。

R=ρLS---(2)

其中：L——壓敏電(dian)阻油(you)墨的厚度；

S——壓敏電阻油(you)墨的橫截面面積(ji)；

ρ——壓敏電(dian)阻油墨(mo)的電(dian)阻率；

R——壓敏(min)電阻(zu)油墨的電阻(zu)值。

                U＝IR        (3)

其中(zhong)：I——流(liu)經壓(ya)敏電(dian)阻的電(dian)流(liu)值(zhi)；

R——壓敏電阻(zu)油(you)墨的電阻(zu)值(zhi)；

U——壓(ya)敏電阻油墨(mo)的電壓(ya)值；

如圖(tu)4所(suo)示(shi)(shi)，絲網(wang)印刷單(dan)(dan)點(dian)力(li)片式傳感器(qi)(qi)(qi)的(de)(de)(de)(de)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)因為(wei)只受到(dao)(dao)軸向壓(ya)(ya)(ya)縮變(bian)(bian)形而(er)引起(qi)了其(qi)阻(zu)值的(de)(de)(de)(de)改(gai)變(bian)(bian)，因此(ci)在測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)可(ke)以被(bei)當作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中的(de)(de)(de)(de)可(ke)變(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)對待；同(tong)(tong)時(shi)又(you)由(you)于壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)(de)改(gai)變(bian)(bian)引起(qi)了加在壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)兩端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值的(de)(de)(de)(de)改(gai)變(bian)(bian)，因此(ci)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)改(gai)變(bian)(bian)可(ke)以被(bei)當作(zuo)檢測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)輸(shu)入(ru)變(bian)(bian)量(liang)信(xin)(xin)號(hao)(hao)(hao)。由(you)于單(dan)(dan)點(dian)力(li)傳感器(qi)(qi)(qi)的(de)(de)(de)(de)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)因外(wai)力(li)作(zuo)用而(er)引起(qi)了加在其(qi)兩端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)改(gai)變(bian)(bian)，反相比(bi)例放(fang)(fang)大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)輸(shu)入(ru)端(duan)(duan)(duan)恰(qia)好是(shi)(shi)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)改(gai)變(bian)(bian)端(duan)(duan)(duan)；因此(ci)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)改(gai)變(bian)(bian)必然引起(qi)了反相比(bi)例放(fang)(fang)大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)I輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值的(de)(de)(de)(de)改(gai)變(bian)(bian)，也就是(shi)(shi)說單(dan)(dan)點(dian)力(li)傳感器(qi)(qi)(qi)受外(wai)力(li)作(zuo)用是(shi)(shi)可(ke)以引起(qi)測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中相應電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)改(gai)變(bian)(bian)的(de)(de)(de)(de)。當外(wai)力(li)作(zuo)用于單(dan)(dan)點(dian)力(li)傳感器(qi)(qi)(qi)后由(you)于壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值的(de)(de)(de)(de)改(gai)變(bian)(bian)而(er)產生(sheng)了一定的(de)(de)(de)(de)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)，通(tong)(tong)(tong)過(guo)(guo)反相比(bi)例放(fang)(fang)大(da)(da)(da)器(qi)(qi)(qi)I將(jiang)(jiang)該信(xin)(xin)號(hao)(hao)(hao)放(fang)(fang)大(da)(da)(da)；然后再(zai)通(tong)(tong)(tong)過(guo)(guo)低通(tong)(tong)(tong)濾波器(qi)(qi)(qi)將(jiang)(jiang)其(qi)他高頻干(gan)擾信(xin)(xin)號(hao)(hao)(hao)過(guo)(guo)濾或者去除；接著再(zai)通(tong)(tong)(tong)過(guo)(guo)反相比(bi)例放(fang)(fang)大(da)(da)(da)器(qi)(qi)(qi)II將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)還原到(dao)(dao)最(zui)初的(de)(de)(de)(de)相位(因為(wei)前后經(jing)(jing)過(guo)(guo)了兩次反相放(fang)(fang)大(da)(da)(da)，因此(ci)經(jing)(jing)過(guo)(guo)處(chu)理后的(de)(de)(de)(de)信(xin)(xin)號(hao)(hao)(hao)可(ke)以恢復(fu)到(dao)(dao)原來的(de)(de)(de)(de)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值，同(tong)(tong)時(shi)將(jiang)(jiang)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)值放(fang)(fang)大(da)(da)(da)了)；最(zui)后再(zai)通(tong)(tong)(tong)過(guo)(guo)A/D轉換器(qi)(qi)(qi)限壓(ya)(ya)(ya)轉換將(jiang)(jiang)外(wai)力(li)引起(qi)的(de)(de)(de)(de)并經(jing)(jing)過(guo)(guo)處(chu)理的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)轉換為(wei)計算機能(neng)識(shi)別(bie)的(de)(de)(de)(de)數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)，當然也可(ke)以直接將(jiang)(jiang)反相比(bi)例放(fang)(fang)大(da)(da)(da)器(qi)(qi)(qi)II處(chu)理后的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)直接輸(shu)入(ru)至可(ke)以接收(shou)該信(xin)(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)模(mo)(mo)(mo)擬(ni)(ni)顯(xian)示(shi)(shi)儀器(qi)(qi)(qi)或處(chu)理儀器(qi)(qi)(qi)例如模(mo)(mo)(mo)擬(ni)(ni)信(xin)(xin)號(hao)(hao)(hao)示(shi)(shi)波顯(xian)示(shi)(shi)器(qi)(qi)(qi)或者模(mo)(mo)(mo)擬(ni)(ni)信(xin)(xin)號(hao)(hao)(hao)處(chu)理電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)板。