技術領域

本發(fa)明涉(she)及(ji)一種傳感器及(ji)其制造(zao)方法(fa)，特別(bie)涉(she)及(ji)一種用于(yu)在某一狹小接(jie)觸區域中對一點接(jie)觸物(wu)體(ti)間的壓力或集(ji)中力進(jin)行檢測的柔性(xing)單點力片式傳感器及(ji)其制造(zao)方法(fa)。

背景技術

壓(ya)力(li)(li)傳(chuan)感(gan)器(qi)及檢(jian)(jian)測(ce)技術在航(hang)空(kong)航(hang)天、軍事工(gong)業(ye)、汽車、船舶制造、工(gong)業(ye)自(zi)動(dong)(dong)化、醫(yi)學(xue)研究(jiu)、生物醫(yi)療(liao)等領域中(zhong)發揮著重要(yao)的(de)(de)作(zuo)(zuo)(zuo)用(yong)。然而在上述應用(yong)領域，許多場合需在某一(yi)狹小(xiao)空(kong)間(jian)(jian)(jian)中(zhong)對某一(yi)點接(jie)觸物體(ti)間(jian)(jian)(jian)的(de)(de)壓(ya)力(li)(li)或集中(zhong)力(li)(li)進行檢(jian)(jian)測(ce)，例如點接(jie)觸物體(ti)間(jian)(jian)(jian)在運動(dong)(dong)過(guo)程中(zhong)摩擦(ca)力(li)(li)相(xiang)互(hu)(hu)作(zuo)(zuo)(zuo)用(yong)過(guo)程的(de)(de)研究(jiu)、例如檢(jian)(jian)測(ce)空(kong)間(jian)(jian)(jian)凸(tu)輪與滾子從動(dong)(dong)件處于點接(jie)觸狀態下(xia)的(de)(de)相(xiang)互(hu)(hu)作(zuo)(zuo)(zuo)用(yong)力(li)(li)、檢(jian)(jian)測(ce)某一(yi)對牙齒嚙合時(shi)(shi)的(de)(de)相(xiang)互(hu)(hu)作(zuo)(zuo)(zuo)用(yong)力(li)(li)等。由于受到傳(chuan)感(gan)器(qi)重量、體(ti)積(ji)以及工(gong)作(zuo)(zuo)(zuo)空(kong)間(jian)(jian)(jian)(如狹縫)的(de)(de)限制，這時(shi)(shi)傳(chuan)統(tong)壓(ya)力(li)(li)傳(chuan)感(gan)器(qi)便(bian)不能用(yong)于上述場合下(xia)的(de)(de)使(shi)用(yong)來(lai)檢(jian)(jian)測(ce)某一(yi)點接(jie)觸物體(ti)間(jian)(jian)(jian)的(de)(de)壓(ya)力(li)(li)或集中(zhong)力(li)(li)。即便(bian)勉強使(shi)用(yong)，也不能滿足操作(zuo)(zuo)(zuo)便(bian)捷的(de)(de)要(yao)求，

發明內容

本(ben)發明(ming)針對傳(chuan)(chuan)統壓力(li)(li)傳(chuan)(chuan)感器不(bu)能(neng)對某一點接(jie)觸物(wu)體間(jian)壓力(li)(li)進行(xing)檢測、體積大、重(zhong)量(liang)重(zhong)、操(cao)作不(bu)方便的缺點；提供了一種能(neng)夠檢測出某一點接(jie)觸物(wu)體間(jian)壓力(li)(li)的柔(rou)性單(dan)點力(li)(li)片式傳(chuan)(chuan)感器，該傳(chuan)(chuan)感器具有體積小、重(zhong)量(liang)輕、制作簡(jian)單(dan)、可低成本(ben)批量(liang)化生產的特點，并且可重(zhong)復使(shi)用、操(cao)作簡(jian)便。

本發明的(de)另一(yi)個目的(de)是提供一(yi)種該傳感器的(de)制造(zao)方法(fa)。

為達到上述目的(de)，本發明是采取如下技術方案予以實現的(de)：

一(yi)(yi)種(zhong)柔性單點力片(pian)(pian)(pian)式傳感器，包括壓(ya)(ya)(ya)敏體(ti)、分(fen)別(bie)設(she)置(zhi)在(zai)壓(ya)(ya)(ya)敏體(ti)上(shang)(shang)下(xia)端面(mian)的(de)(de)兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)極連(lian)接(jie)(jie)片(pian)(pian)(pian)，其特(te)征在(zai)于(yu)，還包括有形(xing)狀大小(xiao)相(xiang)同(tong)的(de)(de)上(shang)(shang)基(ji)板和下(xia)基(ji)板，上(shang)(shang)、下(xia)基(ji)板之(zhi)(zhi)間(jian)(jian)由粘接(jie)(jie)層封(feng)接(jie)(jie)；在(zai)上(shang)(shang)基(ji)板長(chang)度方(fang)向(xiang)的(de)(de)一(yi)(yi)側設(she)置(zhi)有一(yi)(yi)凸起；在(zai)相(xiang)對該凸起的(de)(de)下(xia)基(ji)板上(shang)(shang)設(she)置(zhi)有一(yi)(yi)凹(ao)(ao)陷，該凹(ao)(ao)陷與所(suo)(suo)(suo)述(shu)凸起之(zhi)(zhi)間(jian)(jian)形(xing)成一(yi)(yi)個(ge)(ge)密閉(bi)的(de)(de)壓(ya)(ya)(ya)敏體(ti)室，其中封(feng)裝有所(suo)(suo)(suo)述(shu)的(de)(de)壓(ya)(ya)(ya)敏體(ti)及電(dian)(dian)(dian)(dian)極連(lian)接(jie)(jie)片(pian)(pian)(pian)，所(suo)(suo)(suo)述(shu)壓(ya)(ya)(ya)敏體(ti)室的(de)(de)大小(xiao)剛好與壓(ya)(ya)(ya)敏體(ti)的(de)(de)大小(xiao)吻合；所(suo)(suo)(suo)述(shu)下(xia)基(ji)板1沿(yan)其長(chang)度方(fang)向(xiang)設(she)置(zhi)有兩(liang)條相(xiang)互(hu)平行的(de)(de)印刷(shua)電(dian)(dian)(dian)(dian)極6，每個(ge)(ge)印刷(shua)電(dian)(dian)(dian)(dian)極分(fen)別(bie)連(lian)接(jie)(jie)位于(yu)壓(ya)(ya)(ya)敏體(ti)上(shang)(shang)或下(xia)端面(mian)的(de)(de)電(dian)(dian)(dian)(dian)極連(lian)接(jie)(jie)片(pian)(pian)(pian)9和伸出下(xia)基(ji)板的(de)(de)電(dian)(dian)(dian)(dian)極引(yin)出片(pian)(pian)(pian)3；所(suo)(suo)(suo)述(shu)下(xia)基(ji)板上(shang)(shang)的(de)(de)兩(liang)條印刷(shua)電(dian)(dian)(dian)(dian)極6從連(lian)接(jie)(jie)電(dian)(dian)(dian)(dian)極連(lian)接(jie)(jie)片(pian)(pian)(pian)9到連(lian)接(jie)(jie)電(dian)(dian)(dian)(dian)極引(yin)出片(pian)(pian)(pian)3一(yi)(yi)段的(de)(de)上(shang)(shang)表(biao)面(mian)設(she)置(zhi)有電(dian)(dian)(dian)(dian)極保護膜。

一種上述柔性單(dan)點(dian)力(li)片式(shi)傳感器的制(zhi)造方法，其(qi)特(te)征在于，包括如下步驟：

a.先(xian)制備形狀(zhuang)大小相(xiang)同的(de)(de)上(shang)基(ji)板(ban)和下基(ji)板(ban)，在上(shang)基(ji)板(ban)長度方向的(de)(de)一(yi)側設(she)置(zhi)一(yi)凸起；在相(xiang)對該(gai)凸起的(de)(de)下基(ji)板(ban)上(shang)設(she)置(zhi)一(yi)凹(ao)陷(xian)；

b.將下基板(ban)1固(gu)定在(zai)絲(si)網印(yin)(yin)刷(shua)機的(de)印(yin)(yin)刷(shua)臺上(shang)，用導(dao)電(dian)料漿(jiang)沿下基板(ban)長度方向(xiang)從遠(yuan)離凹陷(xian)一(yi)側到凹陷(xian)的(de)上(shang)表面印(yin)(yin)制(zhi)兩條印(yin)(yin)刷(shua)電(dian)極，干(gan)燥后，在(zai)下基板(ban)遠(yuan)離凹陷(xian)的(de)一(yi)側設置(zhi)兩個外露的(de)電(dian)極引(yin)出片(pian)3。

c.在下(xia)基(ji)板凹陷中涂敷壓(ya)(ya)敏(min)電(dian)阻油墨，并放置一(yi)(yi)個壓(ya)(ya)敏(min)體(ti)，該壓(ya)(ya)敏(min)體(ti)上(shang)(shang)、下(xia)端(duan)面(mian)事先分(fen)別焊接(jie)好兩(liang)(liang)(liang)個電(dian)極連(lian)(lian)(lian)接(jie)片(pian)9，位于(yu)壓(ya)(ya)敏(min)體(ti)上(shang)(shang)、下(xia)端(duan)面(mian)的(de)(de)(de)兩(liang)(liang)(liang)電(dian)極連(lian)(lian)(lian)接(jie)片(pian)9分(fen)別連(lian)(lian)(lian)接(jie)至(zhi)位于(yu)下(xia)基(ji)板上(shang)(shang)的(de)(de)(de)兩(liang)(liang)(liang)條印刷(shua)電(dian)極6的(de)(de)(de)一(yi)(yi)端(duan)，兩(liang)(liang)(liang)條印刷(shua)電(dian)極6的(de)(de)(de)另一(yi)(yi)端(duan)連(lian)(lian)(lian)接(jie)外露的(de)(de)(de)兩(liang)(liang)(liang)個電(dian)極引出片(pian)3；同時，在上(shang)(shang)基(ji)板4的(de)(de)(de)凸起內表面(mian)上(shang)(shang)涂敷壓(ya)(ya)敏(min)電(dian)阻油墨。

d.在下基板的兩條印(yin)刷電(dian)(dian)(dian)極(ji)6上(shang)從連接(jie)電(dian)(dian)(dian)極(ji)連接(jie)片9到連接(jie)電(dian)(dian)(dian)極(ji)引出片3的一段上(shang)表面(mian)涂敷一層電(dian)(dian)(dian)極(ji)保護膜(mo)并干(gan)燥。

e.將上、下基板用粘(zhan)接(jie)層(ceng)復合，使所述凸起與凹陷之(zhi)間形成一個的(de)(de)密閉(bi)壓(ya)敏(min)(min)體(ti)室(shi)，將壓(ya)敏(min)(min)體(ti)及電極連接(jie)片封(feng)裝在其(qi)內，壓(ya)敏(min)(min)體(ti)室(shi)的(de)(de)大(da)小剛好與壓(ya)敏(min)(min)體(ti)的(de)(de)大(da)小吻合，同時兩(liang)條印刷電極相互(hu)平行。

以上方(fang)法中，所(suo)述(shu)的(de)印刷電(dian)(dian)極用(yong)導(dao)電(dian)(dian)漿(jiang)料(liao)為銀導(dao)電(dian)(dian)漿(jiang)料(liao)；所(suo)述(shu)的(de)電(dian)(dian)極保護膜材料(liao)采(cai)用(yong)羥乙基纖維素；所(suo)述(shu)的(de)壓(ya)敏電(dian)(dian)阻油墨采(cai)用(yong)碳二硫(liu)化鉬油墨；所(suo)述(shu)的(de)上、下基板采(cai)用(yong)聚(ju)氯乙烯材料(liao)制成(cheng)矩(ju)形(xing)基片；所(suo)述(shu)的(de)粘接(jie)層采(cai)用(yong)環(huan)氧樹脂(zhi)。

本發(fa)明(ming)的(de)(de)柔(rou)性單點(dian)力(li)片(pian)式(shi)傳感(gan)器不需要(yao)外(wai)加保(bao)(bao)護裝(zhuang)置(zhi)，不用將(jiang)壓敏(min)電(dian)(dian)阻直(zhi)接(jie)(jie)置(zhi)入被測對象內部(bu)(bu)，只需將(jiang)被測對象的(de)(de)點(dian)接(jie)(jie)觸部(bu)(bu)位與壓敏(min)電(dian)(dian)阻所對應(ying)的(de)(de)壓敏(min)體(ti)室的(de)(de)聚氯(lv)乙烯PVC絕(jue)緣(yuan)基片(pian)直(zhi)接(jie)(jie)接(jie)(jie)觸即可；同時壓敏(min)電(dian)(dian)阻材料在工作過(guo)程中始終受(shou)到了聚氯(lv)乙烯PVC片(pian)的(de)(de)絕(jue)緣(yuan)保(bao)(bao)護。由于兩條銀導電(dian)(dian)電(dian)(dian)極均處于羥乙基纖(xian)維素HEC的(de)(de)絕(jue)緣(yuan)保(bao)(bao)護下，可有效防止(zhi)兩電(dian)(dian)極間(jian)間(jian)距(ju)太(tai)小而(er)引起的(de)(de)電(dian)(dian)子遷(qian)移(yi)所造成(cheng)的(de)(de)電(dian)(dian)極間(jian)短路現(xian)象。該柔(rou)性單點(dian)力(li)片(pian)式(shi)傳感(gan)器只有電(dian)(dian)極引出片(pian)部(bu)(bu)分區(qu)域外(wai)露(lu)，因(yin)此具有抗強(qiang)干(gan)擾的(de)(de)優點(dian)。

本發明采用(yong)(yong)基于(yu)絲網印刷工(gong)藝的(de)(de)制(zhi)造(zao)方法，使制(zhi)得的(de)(de)單(dan)點力傳感器具(ju)有重量(liang)(liang)輕、體積小(xiao)(片(pian)狀)、成本低、制(zhi)作(zuo)簡單(dan)、可批量(liang)(liang)化生產的(de)(de)特(te)點，并可重復使用(yong)(yong)、操作(zuo)便捷。該傳感器可應用(yong)(yong)于(yu)工(gong)作(zuo)空間狹(xia)小(xiao)的(de)(de)某(mou)一點接觸(chu)物體間的(de)(de)壓力或集中力的(de)(de)檢測(ce)以及類似(si)特(te)殊應用(yong)(yong)場合(he)。

附圖說明

圖1為本發(fa)明柔(rou)性單點力片(pian)式傳(chuan)感器結(jie)構示意圖。圖中：1、下基板；2、粘接層(ceng)；3、電極引出片(pian)；4、上基板；5、電極保(bao)護(hu)膜；6、印刷電極；7、壓敏體。

圖(tu)2為圖(tu)1的俯視(shi)(shi)其及印刷電極的局部剖視(shi)(shi)圖(tu)。圖(tu)中：8、上基板凸起；9、電極連接片。

圖3為(wei)圖2的(de)剖面圖。圖中：10、下(xia)基板凹(ao)陷。

圖4為本發(fa)明(ming)柔性單點力片式(shi)傳感(gan)器一個應(ying)用實例(li)的測量電(dian)路原理圖。

具體(ti)實施(shi)方式

下面(mian)結合附圖及實施例對本(ben)發明(ming)作進一步的詳細說明(ming)。

如(ru)圖(tu)1-圖(tu)3所(suo)示，一(yi)(yi)(yi)(yi)(yi)(yi)種柔性單點力片(pian)(pian)式傳感(gan)器，包括(kuo)上(shang)(shang)(shang)基(ji)(ji)(ji)板(ban)4和下(xia)(xia)基(ji)(ji)(ji)板(ban)1、壓(ya)(ya)敏體(ti)7、設(she)置(zhi)在壓(ya)(ya)敏體(ti)7垂直兩端面(mian)(mian)的(de)(de)兩個電(dian)(dian)(dian)極(ji)連(lian)(lian)(lian)接片(pian)(pian)9，上(shang)(shang)(shang)、下(xia)(xia)基(ji)(ji)(ji)板(ban)之間由(you)環氧(yang)樹(shu)脂粘接層(ceng)2封接；上(shang)(shang)(shang)、下(xia)(xia)基(ji)(ji)(ji)板(ban)4、1可由(you)聚氯乙(yi)烯(xi)(PVC)制成(cheng)相同(tong)大(da)小(xiao)(xiao)尺寸的(de)(de)矩形(xing)基(ji)(ji)(ji)片(pian)(pian)；在靠近上(shang)(shang)(shang)基(ji)(ji)(ji)板(ban)4長度(du)方(fang)向(xiang)的(de)(de)左(zuo)側(ce)(ce)設(she)置(zhi)有(you)一(yi)(yi)(yi)(yi)(yi)(yi)凸(tu)起(qi)8；在相對該凸(tu)起(qi)8的(de)(de)下(xia)(xia)基(ji)(ji)(ji)板(ban)上(shang)(shang)(shang)設(she)置(zhi)有(you)一(yi)(yi)(yi)(yi)(yi)(yi)凹(ao)陷10，該凹(ao)陷與(yu)凸(tu)起(qi)之間形(xing)成(cheng)一(yi)(yi)(yi)(yi)(yi)(yi)個的(de)(de)密閉壓(ya)(ya)敏體(ti)室，其中(zhong)封裝(zhuang)有(you)壓(ya)(ya)敏體(ti)7及電(dian)(dian)(dian)極(ji)連(lian)(lian)(lian)接片(pian)(pian)9，壓(ya)(ya)敏體(ti)室的(de)(de)大(da)小(xiao)(xiao)剛好與(yu)壓(ya)(ya)敏體(ti)7的(de)(de)大(da)小(xiao)(xiao)吻合，壓(ya)(ya)敏體(ti)7為(wei)圓片(pian)(pian)或方(fang)塊形(xing)壓(ya)(ya)敏電(dian)(dian)(dian)阻(zu)；下(xia)(xia)基(ji)(ji)(ji)板(ban)1上(shang)(shang)(shang)設(she)置(zhi)有(you)兩條沿(yan)其長度(du)方(fang)向(xiang)相互平行的(de)(de)印(yin)刷(shua)電(dian)(dian)(dian)極(ji)6，印(yin)刷(shua)電(dian)(dian)(dian)極(ji)6為(wei)銀導電(dian)(dian)(dian)帶狀薄膜。每條印(yin)刷(shua)電(dian)(dian)(dian)極(ji)在凹(ao)陷右(you)邊沿(yan)處的(de)(de)一(yi)(yi)(yi)(yi)(yi)(yi)端連(lian)(lian)(lian)接一(yi)(yi)(yi)(yi)(yi)(yi)個電(dian)(dian)(dian)極(ji)連(lian)(lian)(lian)接片(pian)(pian)9；遠(yuan)離凹(ao)陷到下(xia)(xia)基(ji)(ji)(ji)板(ban)1右(you)側(ce)(ce)處的(de)(de)另一(yi)(yi)(yi)(yi)(yi)(yi)端連(lian)(lian)(lian)接一(yi)(yi)(yi)(yi)(yi)(yi)個電(dian)(dian)(dian)極(ji)引(yin)出(chu)片(pian)(pian)3，該電(dian)(dian)(dian)極(ji)引(yin)出(chu)片(pian)(pian)3外露下(xia)(xia)基(ji)(ji)(ji)板(ban)右(you)側(ce)(ce)；印(yin)刷(shua)電(dian)(dian)(dian)極(ji)6從連(lian)(lian)(lian)接電(dian)(dian)(dian)極(ji)連(lian)(lian)(lian)接片(pian)(pian)9到連(lian)(lian)(lian)接電(dian)(dian)(dian)極(ji)引(yin)出(chu)片(pian)(pian)3的(de)(de)一(yi)(yi)(yi)(yi)(yi)(yi)段上(shang)(shang)(shang)表面(mian)(mian)設(she)置(zhi)有(you)電(dian)(dian)(dian)極(ji)保護(hu)(hu)膜5，該電(dian)(dian)(dian)極(ji)保護(hu)(hu)膜為(wei)羥乙(yi)基(ji)(ji)(ji)纖維素(su)(HEC)膜層(ceng)。

以上柔性(xing)單(dan)點力片式傳感器制造方(fang)法，包括下述步驟：

a.先制(zhi)備(bei)形狀大小(xiao)相(xiang)同(tong)的(de)上基板(ban)和下基板(ban)，在(zai)上基板(ban)長度方向的(de)一側設置(zhi)一凸起(qi)；在(zai)相(xiang)對該(gai)凸起(qi)的(de)下基板(ban)上設置(zhi)一凹陷；

b.將下基板(ban)1固定在絲網(wang)印刷機的印刷臺上，用導電(dian)料漿沿下基板(ban)長度方向從遠離凹陷一(yi)側到凹陷的上表(biao)面印制兩(liang)條印刷電(dian)極，干燥后，在下基板(ban)遠離凹陷的一(yi)側設置兩(liang)個(ge)外露的電(dian)極引出片3。

c.在(zai)下(xia)基(ji)(ji)板(ban)凹陷(xian)中涂敷壓(ya)敏(min)電(dian)阻油墨，并放置(zhi)一(yi)個壓(ya)敏(min)體(ti)，該壓(ya)敏(min)體(ti)上(shang)(shang)、下(xia)端(duan)面(mian)(mian)事先分別(bie)焊(han)接好兩個電(dian)極(ji)(ji)(ji)連接片9，位于(yu)壓(ya)敏(min)體(ti)上(shang)(shang)、下(xia)端(duan)面(mian)(mian)的兩電(dian)極(ji)(ji)(ji)連接片9分別(bie)連接至位于(yu)下(xia)基(ji)(ji)板(ban)上(shang)(shang)的兩條(tiao)印(yin)(yin)刷電(dian)極(ji)(ji)(ji)6，兩條(tiao)印(yin)(yin)刷電(dian)極(ji)(ji)(ji)6的另一(yi)端(duan)連接外露的兩個電(dian)極(ji)(ji)(ji)引出(chu)片3；同時，在(zai)上(shang)(shang)基(ji)(ji)板(ban)4的凸起內表(biao)面(mian)(mian)上(shang)(shang)涂敷壓(ya)敏(min)電(dian)阻油墨。

d.在下基板的兩條印刷(shua)電(dian)(dian)極(ji)(ji)6上(shang)從連(lian)接電(dian)(dian)極(ji)(ji)連(lian)接片9到連(lian)接電(dian)(dian)極(ji)(ji)引出片3的一段上(shang)表面涂敷一層電(dian)(dian)極(ji)(ji)保(bao)護(hu)膜并干燥(zao)。

e.將(jiang)上、下基板用粘接(jie)(jie)層復合，使所述凸起與凹陷之(zhi)間形成(cheng)一個的(de)密閉壓(ya)敏(min)體(ti)室(shi)，將(jiang)壓(ya)敏(min)體(ti)及(ji)電極連接(jie)(jie)片封(feng)裝在其(qi)內(nei)，壓(ya)敏(min)體(ti)室(shi)的(de)大(da)(da)小剛好與壓(ya)敏(min)體(ti)的(de)大(da)(da)小吻合，同時(shi)兩條印刷電極相互平行。

當上(shang)述(shu)絲(si)網印刷單(dan)點力(li)片(pian)式傳感器與外接電(dian)路連(lian)接并(bing)通過能(neng)正常工(gong)作(zuo)的測試后，該傳感器外露(lu)部(bu)分電(dian)極引出片(pian)3與外接導(dao)(dao)線連(lian)接部(bu)分用(yong)絕緣硅(gui)膠將其(qi)覆蓋以防銀電(dian)極長期處于在空(kong)氣中被氧化(hua)而削弱或喪(sang)失了(le)其(qi)導(dao)(dao)電(dian)性能(neng)。

本發明(ming)柔性單點(dian)力(li)片式傳感器(qi)的(de)檢測(ce)原理如下(xia)：當處(chu)于點(dian)接觸狀態時物體間的(de)一集(ji)中載荷(集(ji)中力(li))作用于壓(ya)(ya)(ya)敏(min)(min)電(dian)阻(zu)(zu)7上時，壓(ya)(ya)(ya)敏(min)(min)電(dian)阻(zu)(zu)因受到了(le)壓(ya)(ya)(ya)力(li)作用便(bian)(bian)發生了(le)一定(ding)的(de)壓(ya)(ya)(ya)縮變(bian)(bian)形，從而引起了(le)壓(ya)(ya)(ya)敏(min)(min)電(dian)阻(zu)(zu)值的(de)變(bian)(bian)化(hua)，反映在電(dian)路上便(bian)(bian)是兩銀導電(dian)電(dian)極6之間電(dian)壓(ya)(ya)(ya)值的(de)改變(bian)(bian)；根據壓(ya)(ya)(ya)敏(min)(min)電(dian)阻(zu)(zu)上電(dian)壓(ya)(ya)(ya)值相(xiang)對(dui)于最(zui)初電(dian)壓(ya)(ya)(ya)值的(de)變(bian)(bian)化(hua)量便(bian)(bian)可反映出點(dian)接觸處(chu)壓(ya)(ya)(ya)力(li)或集(ji)中載荷的(de)大小。集(ji)中載荷與軸向長(chang)度、電(dian)阻(zu)(zu)阻(zu)(zu)值與軸向長(chang)度的(de)關系(xi)、電(dian)壓(ya)(ya)(ya)與電(dian)阻(zu)(zu)的(de)關系(xi)如下(xia)：

ΔL=FLES---(1)

其中(zhong)：L——壓敏(min)電阻的原始厚(hou)度；

S——壓敏(min)電阻的橫(heng)截(jie)面面積(ji)；

F——作用于壓敏電阻上的集中載荷(he)；

E——壓敏電(dian)阻的(de)彈(dan)性模量；

ΔL——壓敏電(dian)阻油(you)墨厚度(du)的改變量。

R=ρLS---(2)

其中：L——壓(ya)敏電阻油墨的厚度；

S——壓敏電(dian)阻(zu)油(you)墨的(de)橫截面面積；

ρ——壓敏電(dian)(dian)阻油(you)墨的電(dian)(dian)阻率(lv)；

R——壓敏電(dian)阻(zu)油墨的電(dian)阻(zu)值。

                U＝IR        (3)

其(qi)中：I——流(liu)經(jing)壓敏電阻的電流(liu)值；

R——壓敏(min)電阻(zu)油墨的電阻(zu)值(zhi)；

U——壓敏電阻油墨(mo)的電壓值；

如(ru)圖4所示(shi)，絲(si)網印刷單(dan)(dan)點力(li)片式傳(chuan)感器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)因(yin)為(wei)只受到(dao)軸向壓(ya)(ya)縮變(bian)形(xing)而引(yin)起了(le)(le)其阻(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，因(yin)此(ci)在測(ce)(ce)量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)可以(yi)被(bei)(bei)當作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中的(de)(de)(de)(de)(de)(de)(de)可變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)對(dui)待；同時(shi)又由(you)(you)于壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)引(yin)起了(le)(le)加在壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)兩(liang)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，因(yin)此(ci)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)可以(yi)被(bei)(bei)當作(zuo)(zuo)檢測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)輸入變(bian)量信(xin)(xin)號(hao)(hao)(hao)。由(you)(you)于單(dan)(dan)點力(li)傳(chuan)感器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)因(yin)外(wai)力(li)作(zuo)(zuo)用而引(yin)起了(le)(le)加在其兩(liang)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，反(fan)(fan)(fan)(fan)相(xiang)(xiang)比(bi)例(li)放(fang)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)輸入端(duan)(duan)恰好是(shi)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)端(duan)(duan)；因(yin)此(ci)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)必然(ran)引(yin)起了(le)(le)反(fan)(fan)(fan)(fan)相(xiang)(xiang)比(bi)例(li)放(fang)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)I輸出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)，也就是(shi)說單(dan)(dan)點力(li)傳(chuan)感器(qi)(qi)受外(wai)力(li)作(zuo)(zuo)用是(shi)可以(yi)引(yin)起測(ce)(ce)量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中相(xiang)(xiang)應電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)的(de)(de)(de)(de)(de)(de)(de)。當外(wai)力(li)作(zuo)(zuo)用于單(dan)(dan)點力(li)傳(chuan)感器(qi)(qi)后(hou)(hou)(hou)由(you)(you)于壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)變(bian)而產生了(le)(le)一定的(de)(de)(de)(de)(de)(de)(de)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)，通(tong)過(guo)反(fan)(fan)(fan)(fan)相(xiang)(xiang)比(bi)例(li)放(fang)大(da)器(qi)(qi)I將(jiang)(jiang)該信(xin)(xin)號(hao)(hao)(hao)放(fang)大(da)；然(ran)后(hou)(hou)(hou)再通(tong)過(guo)低通(tong)濾(lv)波器(qi)(qi)將(jiang)(jiang)其他(ta)高頻干(gan)擾信(xin)(xin)號(hao)(hao)(hao)過(guo)濾(lv)或(huo)(huo)者(zhe)去除；接(jie)著(zhu)再通(tong)過(guo)反(fan)(fan)(fan)(fan)相(xiang)(xiang)比(bi)例(li)放(fang)大(da)器(qi)(qi)II將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)還(huan)原(yuan)到(dao)最初的(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)位(因(yin)為(wei)前(qian)后(hou)(hou)(hou)經(jing)(jing)過(guo)了(le)(le)兩(liang)次反(fan)(fan)(fan)(fan)相(xiang)(xiang)放(fang)大(da)，因(yin)此(ci)經(jing)(jing)過(guo)處理(li)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)信(xin)(xin)號(hao)(hao)(hao)可以(yi)恢復(fu)到(dao)原(yuan)來的(de)(de)(de)(de)(de)(de)(de)正電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)，同時(shi)將(jiang)(jiang)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)值(zhi)放(fang)大(da)了(le)(le))；最后(hou)(hou)(hou)再通(tong)過(guo)A/D轉換器(qi)(qi)限壓(ya)(ya)轉換將(jiang)(jiang)外(wai)力(li)引(yin)起的(de)(de)(de)(de)(de)(de)(de)并經(jing)(jing)過(guo)處理(li)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)轉換為(wei)計(ji)算機能識(shi)別的(de)(de)(de)(de)(de)(de)(de)數字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)，當然(ran)也可以(yi)直接(jie)將(jiang)(jiang)反(fan)(fan)(fan)(fan)相(xiang)(xiang)比(bi)例(li)放(fang)大(da)器(qi)(qi)II處理(li)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)直接(jie)輸入至可以(yi)接(jie)收該信(xin)(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)模(mo)(mo)(mo)擬(ni)(ni)顯示(shi)儀器(qi)(qi)或(huo)(huo)處理(li)儀器(qi)(qi)例(li)如(ru)模(mo)(mo)(mo)擬(ni)(ni)信(xin)(xin)號(hao)(hao)(hao)示(shi)波顯示(shi)器(qi)(qi)或(huo)(huo)者(zhe)模(mo)(mo)(mo)擬(ni)(ni)信(xin)(xin)號(hao)(hao)(hao)處理(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板。