技術領域

本發(fa)明涉及一(yi)種(zhong)傳感器(qi)(qi)及其制造方法，特別涉及一(yi)種(zhong)用于在某(mou)一(yi)狹小接觸區域中(zhong)對(dui)一(yi)點(dian)接觸物體間的壓力(li)或集中(zhong)力(li)進(jin)行檢測的柔性(xing)單點(dian)力(li)片式傳感器(qi)(qi)及其制造方法。

背景技術

壓(ya)力(li)(li)(li)(li)傳(chuan)感(gan)器及檢(jian)測技術在(zai)(zai)航空航天、軍事工(gong)業(ye)、汽車、船(chuan)舶制造、工(gong)業(ye)自動(dong)化、醫(yi)學研究、生物(wu)醫(yi)療等(deng)領域中(zhong)發揮著重(zhong)要的(de)作(zuo)用(yong)。然而在(zai)(zai)上述(shu)(shu)應用(yong)領域，許多場合(he)需在(zai)(zai)某(mou)(mou)一(yi)狹(xia)小空間(jian)中(zhong)對某(mou)(mou)一(yi)點(dian)接觸物(wu)體(ti)(ti)間(jian)的(de)壓(ya)力(li)(li)(li)(li)或集中(zhong)力(li)(li)(li)(li)進行檢(jian)測，例如點(dian)接觸物(wu)體(ti)(ti)間(jian)在(zai)(zai)運動(dong)過(guo)程中(zhong)摩擦力(li)(li)(li)(li)相(xiang)互作(zuo)用(yong)過(guo)程的(de)研究、例如檢(jian)測空間(jian)凸輪與滾子從動(dong)件處于(yu)(yu)點(dian)接觸狀態下的(de)相(xiang)互作(zuo)用(yong)力(li)(li)(li)(li)、檢(jian)測某(mou)(mou)一(yi)對牙齒嚙(nie)合(he)時的(de)相(xiang)互作(zuo)用(yong)力(li)(li)(li)(li)等(deng)。由于(yu)(yu)受到傳(chuan)感(gan)器重(zhong)量、體(ti)(ti)積以及工(gong)作(zuo)空間(jian)(如狹(xia)縫)的(de)限(xian)制，這時傳(chuan)統壓(ya)力(li)(li)(li)(li)傳(chuan)感(gan)器便(bian)不能(neng)用(yong)于(yu)(yu)上述(shu)(shu)場合(he)下的(de)使用(yong)來(lai)檢(jian)測某(mou)(mou)一(yi)點(dian)接觸物(wu)體(ti)(ti)間(jian)的(de)壓(ya)力(li)(li)(li)(li)或集中(zhong)力(li)(li)(li)(li)。即便(bian)勉(mian)強使用(yong)，也(ye)不能(neng)滿足操作(zuo)便(bian)捷的(de)要求，

發明內容

本(ben)發明針對傳(chuan)(chuan)統壓力傳(chuan)(chuan)感(gan)器不能對某一(yi)點(dian)(dian)接觸物體(ti)(ti)間(jian)壓力進行檢測(ce)、體(ti)(ti)積(ji)大、重(zhong)(zhong)量(liang)重(zhong)(zhong)、操作(zuo)不方(fang)便(bian)的(de)缺(que)點(dian)(dian)；提供了(le)一(yi)種能夠檢測(ce)出(chu)某一(yi)點(dian)(dian)接觸物體(ti)(ti)間(jian)壓力的(de)柔性單點(dian)(dian)力片式傳(chuan)(chuan)感(gan)器，該傳(chuan)(chuan)感(gan)器具有體(ti)(ti)積(ji)小、重(zhong)(zhong)量(liang)輕、制作(zuo)簡單、可(ke)低成本(ben)批(pi)量(liang)化生(sheng)產的(de)特點(dian)(dian)，并且可(ke)重(zhong)(zhong)復使用(yong)、操作(zuo)簡便(bian)。

本發(fa)明的(de)(de)另(ling)一個(ge)目的(de)(de)是(shi)提(ti)供一種該傳感器(qi)的(de)(de)制造(zao)方法(fa)。

為達到上述(shu)目的，本發明是采取(qu)如下(xia)技術方案予以實現的：

一(yi)(yi)(yi)(yi)種柔性單點力片式傳感器，包(bao)(bao)括壓(ya)敏體(ti)、分別設置(zhi)在(zai)(zai)壓(ya)敏體(ti)上(shang)下(xia)端面的(de)(de)兩個電(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)片，其(qi)特(te)征在(zai)(zai)于(yu)，還包(bao)(bao)括有形狀大小相同的(de)(de)上(shang)基(ji)板(ban)和下(xia)基(ji)板(ban)，上(shang)、下(xia)基(ji)板(ban)之間(jian)由粘接(jie)(jie)(jie)層封(feng)接(jie)(jie)(jie)；在(zai)(zai)上(shang)基(ji)板(ban)長度方(fang)向(xiang)(xiang)的(de)(de)一(yi)(yi)(yi)(yi)側設置(zhi)有一(yi)(yi)(yi)(yi)凸(tu)起(qi)；在(zai)(zai)相對(dui)該凸(tu)起(qi)的(de)(de)下(xia)基(ji)板(ban)上(shang)設置(zhi)有一(yi)(yi)(yi)(yi)凹陷(xian)，該凹陷(xian)與所(suo)述(shu)凸(tu)起(qi)之間(jian)形成(cheng)一(yi)(yi)(yi)(yi)個密(mi)閉(bi)的(de)(de)壓(ya)敏體(ti)室，其(qi)中封(feng)裝(zhuang)有所(suo)述(shu)的(de)(de)壓(ya)敏體(ti)及電(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)片，所(suo)述(shu)壓(ya)敏體(ti)室的(de)(de)大小剛好(hao)與壓(ya)敏體(ti)的(de)(de)大小吻合；所(suo)述(shu)下(xia)基(ji)板(ban)1沿(yan)其(qi)長度方(fang)向(xiang)(xiang)設置(zhi)有兩條相互(hu)平行(xing)的(de)(de)印(yin)刷(shua)電(dian)(dian)極(ji)(ji)6，每個印(yin)刷(shua)電(dian)(dian)極(ji)(ji)分別連(lian)接(jie)(jie)(jie)位于(yu)壓(ya)敏體(ti)上(shang)或下(xia)端面的(de)(de)電(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)片9和伸出下(xia)基(ji)板(ban)的(de)(de)電(dian)(dian)極(ji)(ji)引出片3；所(suo)述(shu)下(xia)基(ji)板(ban)上(shang)的(de)(de)兩條印(yin)刷(shua)電(dian)(dian)極(ji)(ji)6從(cong)連(lian)接(jie)(jie)(jie)電(dian)(dian)極(ji)(ji)連(lian)接(jie)(jie)(jie)片9到連(lian)接(jie)(jie)(jie)電(dian)(dian)極(ji)(ji)引出片3一(yi)(yi)(yi)(yi)段的(de)(de)上(shang)表面設置(zhi)有電(dian)(dian)極(ji)(ji)保(bao)護膜。

一種上(shang)述柔性單點力(li)片(pian)式傳感器的制造方法，其(qi)特征在于，包括(kuo)如下(xia)步(bu)驟：

a.先制(zhi)備形狀大小相同(tong)的上(shang)基(ji)板和下基(ji)板，在上(shang)基(ji)板長度(du)方向的一(yi)(yi)側設(she)置一(yi)(yi)凸起；在相對該凸起的下基(ji)板上(shang)設(she)置一(yi)(yi)凹陷；

b.將(jiang)下基板1固定在絲網印(yin)刷機的(de)(de)印(yin)刷臺上(shang)，用導(dao)電(dian)(dian)(dian)料(liao)漿沿下基板長度方(fang)向從遠離凹(ao)陷(xian)(xian)一側到凹(ao)陷(xian)(xian)的(de)(de)上(shang)表(biao)面印(yin)制兩條印(yin)刷電(dian)(dian)(dian)極，干燥(zao)后(hou)，在下基板遠離凹(ao)陷(xian)(xian)的(de)(de)一側設置兩個外(wai)露(lu)的(de)(de)電(dian)(dian)(dian)極引出片3。

c.在下(xia)(xia)基板凹陷中涂敷壓(ya)(ya)敏(min)(min)電(dian)阻油(you)墨(mo)，并放置一個(ge)壓(ya)(ya)敏(min)(min)體(ti)(ti)，該壓(ya)(ya)敏(min)(min)體(ti)(ti)上(shang)(shang)、下(xia)(xia)端(duan)(duan)面(mian)事先分(fen)別焊接(jie)好兩個(ge)電(dian)極連(lian)(lian)(lian)接(jie)片9，位于壓(ya)(ya)敏(min)(min)體(ti)(ti)上(shang)(shang)、下(xia)(xia)端(duan)(duan)面(mian)的(de)(de)兩電(dian)極連(lian)(lian)(lian)接(jie)片9分(fen)別連(lian)(lian)(lian)接(jie)至位于下(xia)(xia)基板上(shang)(shang)的(de)(de)兩條印刷電(dian)極6的(de)(de)一端(duan)(duan)，兩條印刷電(dian)極6的(de)(de)另(ling)一端(duan)(duan)連(lian)(lian)(lian)接(jie)外露的(de)(de)兩個(ge)電(dian)極引出片3；同時，在上(shang)(shang)基板4的(de)(de)凸起內表面(mian)上(shang)(shang)涂敷壓(ya)(ya)敏(min)(min)電(dian)阻油(you)墨(mo)。

d.在下基(ji)板的兩條印刷電(dian)極(ji)(ji)6上從連(lian)(lian)接電(dian)極(ji)(ji)連(lian)(lian)接片9到(dao)連(lian)(lian)接電(dian)極(ji)(ji)引(yin)出片3的一(yi)段上表面(mian)涂敷一(yi)層電(dian)極(ji)(ji)保護膜并干(gan)燥。

e.將(jiang)上、下基板用粘(zhan)接層復合，使(shi)所述凸起與凹陷(xian)之間形(xing)成一個(ge)的(de)(de)密(mi)閉壓(ya)(ya)敏(min)(min)(min)體(ti)室(shi)(shi)，將(jiang)壓(ya)(ya)敏(min)(min)(min)體(ti)及電(dian)極連(lian)接片封裝在其內，壓(ya)(ya)敏(min)(min)(min)體(ti)室(shi)(shi)的(de)(de)大小剛好與壓(ya)(ya)敏(min)(min)(min)體(ti)的(de)(de)大小吻合，同時(shi)兩條印(yin)刷電(dian)極相互平行。

以(yi)上(shang)(shang)方法中，所述的(de)(de)印刷電(dian)極用(yong)導(dao)電(dian)漿料(liao)為銀導(dao)電(dian)漿料(liao)；所述的(de)(de)電(dian)極保護膜材料(liao)采用(yong)羥(qian)乙(yi)基纖維素；所述的(de)(de)壓(ya)敏(min)電(dian)阻油(you)墨采用(yong)碳二硫化鉬油(you)墨；所述的(de)(de)上(shang)(shang)、下基板采用(yong)聚(ju)氯乙(yi)烯材料(liao)制成(cheng)矩(ju)形基片；所述的(de)(de)粘接層采用(yong)環氧樹(shu)脂。

本(ben)發明的柔(rou)性單點力(li)片(pian)式傳感器不(bu)需(xu)要外加保(bao)(bao)護裝置，不(bu)用將壓敏(min)電(dian)(dian)阻(zu)直(zhi)接置入被(bei)測對(dui)象(xiang)(xiang)內部，只需(xu)將被(bei)測對(dui)象(xiang)(xiang)的點接觸部位(wei)與(yu)壓敏(min)電(dian)(dian)阻(zu)所對(dui)應的壓敏(min)體室的聚(ju)(ju)氯乙烯PVC絕(jue)(jue)(jue)緣基片(pian)直(zhi)接接觸即可；同時壓敏(min)電(dian)(dian)阻(zu)材(cai)料在工作(zuo)過程中始(shi)終受到了聚(ju)(ju)氯乙烯PVC片(pian)的絕(jue)(jue)(jue)緣保(bao)(bao)護。由于兩條銀導電(dian)(dian)電(dian)(dian)極(ji)均(jun)處于羥乙基纖維素HEC的絕(jue)(jue)(jue)緣保(bao)(bao)護下(xia)，可有(you)效防止兩電(dian)(dian)極(ji)間間距太(tai)小而引起(qi)的電(dian)(dian)子(zi)遷移所造成的電(dian)(dian)極(ji)間短路現(xian)象(xiang)(xiang)。該柔(rou)性單點力(li)片(pian)式傳感器只有(you)電(dian)(dian)極(ji)引出片(pian)部分區(qu)域(yu)外露，因此具有(you)抗強(qiang)干擾的優點。

本發明采用(yong)基于(yu)絲(si)網印刷工藝的(de)制(zhi)造方法，使制(zhi)得的(de)單點力(li)傳感器具有(you)重量輕、體積小(xiao)(片(pian)狀)、成本低(di)、制(zhi)作(zuo)簡單、可(ke)(ke)批量化生產的(de)特點，并可(ke)(ke)重復使用(yong)、操作(zuo)便捷。該傳感器可(ke)(ke)應用(yong)于(yu)工作(zuo)空間狹(xia)小(xiao)的(de)某一點接觸物(wu)體間的(de)壓力(li)或(huo)集中力(li)的(de)檢測以(yi)及(ji)類似特殊應用(yong)場(chang)合。

附圖說明

圖1為本發(fa)明柔性單點力片(pian)式傳感器結構示意(yi)圖。圖中：1、下(xia)基板；2、粘(zhan)接層(ceng)；3、電(dian)極(ji)引(yin)出片(pian)；4、上基板；5、電(dian)極(ji)保護膜；6、印刷電(dian)極(ji)；7、壓敏體。

圖(tu)2為圖(tu)1的(de)俯(fu)視(shi)其及(ji)印刷電(dian)極(ji)的(de)局部剖視(shi)圖(tu)。圖(tu)中：8、上基(ji)板凸起；9、電(dian)極(ji)連接片。

圖(tu)3為圖(tu)2的剖面圖(tu)。圖(tu)中：10、下基板凹陷。

圖4為本發(fa)明柔(rou)性(xing)單點(dian)力片(pian)式傳感(gan)器一個(ge)應用實例(li)的測量電路原理圖。

具體實(shi)施方式

下面結合附圖及實施例(li)對本(ben)發明作(zuo)進一步的詳細說明。

如圖1-圖3所示，一(yi)(yi)種柔(rou)性(xing)單(dan)點力片(pian)(pian)(pian)式傳感器(qi)，包括上(shang)基板4和下(xia)(xia)基板1、壓(ya)敏(min)(min)體(ti)7、設(she)置(zhi)在(zai)壓(ya)敏(min)(min)體(ti)7垂直兩(liang)端(duan)面的(de)(de)(de)(de)兩(liang)個電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)(pian)(pian)9，上(shang)、下(xia)(xia)基板之間由(you)環氧(yang)樹(shu)脂粘接(jie)(jie)(jie)層2封接(jie)(jie)(jie)；上(shang)、下(xia)(xia)基板4、1可由(you)聚氯乙烯(PVC)制成(cheng)相同大(da)小尺(chi)寸的(de)(de)(de)(de)矩(ju)形(xing)基片(pian)(pian)(pian)；在(zai)靠近上(shang)基板4長度方(fang)向的(de)(de)(de)(de)左側(ce)設(she)置(zhi)有(you)(you)(you)一(yi)(yi)凸起(qi)(qi)8；在(zai)相對該凸起(qi)(qi)8的(de)(de)(de)(de)下(xia)(xia)基板上(shang)設(she)置(zhi)有(you)(you)(you)一(yi)(yi)凹陷10，該凹陷與凸起(qi)(qi)之間形(xing)成(cheng)一(yi)(yi)個的(de)(de)(de)(de)密閉壓(ya)敏(min)(min)體(ti)室，其(qi)(qi)中封裝有(you)(you)(you)壓(ya)敏(min)(min)體(ti)7及電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)(pian)(pian)9，壓(ya)敏(min)(min)體(ti)室的(de)(de)(de)(de)大(da)小剛(gang)好與壓(ya)敏(min)(min)體(ti)7的(de)(de)(de)(de)大(da)小吻(wen)合，壓(ya)敏(min)(min)體(ti)7為圓片(pian)(pian)(pian)或(huo)方(fang)塊形(xing)壓(ya)敏(min)(min)電(dian)(dian)(dian)阻；下(xia)(xia)基板1上(shang)設(she)置(zhi)有(you)(you)(you)兩(liang)條(tiao)沿(yan)其(qi)(qi)長度方(fang)向相互平行的(de)(de)(de)(de)印刷電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6，印刷電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6為銀導電(dian)(dian)(dian)帶狀薄膜(mo)。每條(tiao)印刷電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)在(zai)凹陷右(you)(you)邊沿(yan)處的(de)(de)(de)(de)一(yi)(yi)端(duan)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)一(yi)(yi)個電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)(pian)(pian)9；遠離(li)凹陷到下(xia)(xia)基板1右(you)(you)側(ce)處的(de)(de)(de)(de)另一(yi)(yi)端(duan)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)一(yi)(yi)個電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3，該電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3外露下(xia)(xia)基板右(you)(you)側(ce)；印刷電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6從(cong)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)(pian)(pian)9到連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3的(de)(de)(de)(de)一(yi)(yi)段(duan)上(shang)表面設(she)置(zhi)有(you)(you)(you)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)保(bao)(bao)護(hu)膜(mo)5，該電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)保(bao)(bao)護(hu)膜(mo)為羥乙基纖維素(su)(HEC)膜(mo)層。

以上柔性單點(dian)力片式傳感器制造(zao)方法，包(bao)括下述步(bu)驟(zou)：

a.先制備(bei)形狀大小相同的上(shang)基(ji)(ji)板(ban)(ban)(ban)和(he)下基(ji)(ji)板(ban)(ban)(ban)，在上(shang)基(ji)(ji)板(ban)(ban)(ban)長度方向的一(yi)側設置一(yi)凸起；在相對該凸起的下基(ji)(ji)板(ban)(ban)(ban)上(shang)設置一(yi)凹陷；

b.將下基(ji)板(ban)1固定在絲網印(yin)(yin)(yin)刷機的(de)印(yin)(yin)(yin)刷臺(tai)上，用導電(dian)料漿沿下基(ji)板(ban)長(chang)度(du)方向(xiang)從(cong)遠(yuan)離(li)凹陷(xian)一側到凹陷(xian)的(de)上表面(mian)印(yin)(yin)(yin)制兩(liang)條印(yin)(yin)(yin)刷電(dian)極(ji)，干燥后，在下基(ji)板(ban)遠(yuan)離(li)凹陷(xian)的(de)一側設置兩(liang)個外露的(de)電(dian)極(ji)引出片3。

c.在下(xia)(xia)基(ji)板(ban)凹(ao)陷中(zhong)涂敷(fu)壓敏(min)電(dian)阻油墨，并(bing)放置一個壓敏(min)體(ti)(ti)，該壓敏(min)體(ti)(ti)上(shang)(shang)、下(xia)(xia)端面事先分別焊接(jie)好兩(liang)(liang)個電(dian)極(ji)連接(jie)片(pian)9，位于壓敏(min)體(ti)(ti)上(shang)(shang)、下(xia)(xia)端面的(de)兩(liang)(liang)電(dian)極(ji)連接(jie)片(pian)9分別連接(jie)至位于下(xia)(xia)基(ji)板(ban)上(shang)(shang)的(de)兩(liang)(liang)條印刷電(dian)極(ji)6，兩(liang)(liang)條印刷電(dian)極(ji)6的(de)另(ling)一端連接(jie)外露的(de)兩(liang)(liang)個電(dian)極(ji)引出(chu)片(pian)3；同時(shi)，在上(shang)(shang)基(ji)板(ban)4的(de)凸起內表面上(shang)(shang)涂敷(fu)壓敏(min)電(dian)阻油墨。

d.在下基板的兩(liang)條(tiao)印(yin)刷電(dian)(dian)極(ji)6上(shang)從連(lian)接(jie)電(dian)(dian)極(ji)連(lian)接(jie)片9到連(lian)接(jie)電(dian)(dian)極(ji)引出片3的一(yi)(yi)段上(shang)表面涂敷一(yi)(yi)層電(dian)(dian)極(ji)保護膜并干燥。

e.將上(shang)、下基板用粘(zhan)接層復合，使所(suo)述凸起與(yu)凹陷之間形成(cheng)一個(ge)的(de)密閉壓(ya)敏體(ti)(ti)室(shi)，將壓(ya)敏體(ti)(ti)及(ji)電極(ji)連接片封裝在其內，壓(ya)敏體(ti)(ti)室(shi)的(de)大(da)小剛(gang)好與(yu)壓(ya)敏體(ti)(ti)的(de)大(da)小吻合，同時兩條(tiao)印刷電極(ji)相互平行。

當上述絲(si)網(wang)印刷單(dan)點力片(pian)(pian)式傳(chuan)感器與(yu)外接電路(lu)連接并通(tong)過能正常工作的測試后，該傳(chuan)感器外露部分(fen)電極引(yin)出(chu)片(pian)(pian)3與(yu)外接導(dao)線連接部分(fen)用絕緣硅膠(jiao)將其覆蓋以防銀(yin)電極長期處于在空氣(qi)中被氧化而削弱或喪失(shi)了(le)其導(dao)電性能。

本(ben)發明柔性單點(dian)力(li)(li)(li)片(pian)式傳感(gan)器的(de)(de)(de)(de)(de)檢測原理(li)如(ru)下：當處(chu)于點(dian)接觸(chu)狀態(tai)時(shi)物體間(jian)的(de)(de)(de)(de)(de)一(yi)集中載(zai)荷(集中力(li)(li)(li))作用于壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)7上時(shi)，壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)因(yin)受到了(le)壓(ya)(ya)力(li)(li)(li)作用便發生了(le)一(yi)定的(de)(de)(de)(de)(de)壓(ya)(ya)縮(suo)變(bian)形，從而引起(qi)了(le)壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)的(de)(de)(de)(de)(de)變(bian)化，反(fan)映在電(dian)(dian)(dian)(dian)路(lu)上便是兩(liang)銀導(dao)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極6之間(jian)電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)的(de)(de)(de)(de)(de)改變(bian)；根據壓(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)上電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)相對(dui)于最(zui)初電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)的(de)(de)(de)(de)(de)變(bian)化量便可反(fan)映出點(dian)接觸(chu)處(chu)壓(ya)(ya)力(li)(li)(li)或集中載(zai)荷的(de)(de)(de)(de)(de)大小(xiao)。集中載(zai)荷與(yu)軸向長度(du)、電(dian)(dian)(dian)(dian)阻(zu)(zu)阻(zu)(zu)值(zhi)與(yu)軸向長度(du)的(de)(de)(de)(de)(de)關系、電(dian)(dian)(dian)(dian)壓(ya)(ya)與(yu)電(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)(de)(de)(de)(de)關系如(ru)下：

ΔL=FLES---(1)

其中：L——壓敏電阻(zu)的(de)原始厚度；

S——壓(ya)敏電(dian)阻的橫(heng)截面面積；

F——作用于(yu)壓(ya)敏電阻上的集中(zhong)載(zai)荷；

E——壓敏電阻的彈性模量；

ΔL——壓敏電阻油(you)墨厚度的改變量。

R=ρLS---(2)

其中：L——壓敏電阻油墨的厚度；

S——壓(ya)敏(min)電阻油墨的橫截面(mian)面(mian)積(ji)；

ρ——壓敏電(dian)阻(zu)油墨的電(dian)阻(zu)率；

R——壓(ya)敏電(dian)阻油墨的(de)電(dian)阻值。

                U＝IR        (3)

其中：I——流(liu)經壓(ya)敏(min)電(dian)阻的電(dian)流(liu)值；

R——壓敏電阻(zu)油墨(mo)的(de)電阻(zu)值；

U——壓敏電(dian)阻油墨的電(dian)壓值；

如圖4所示(shi)，絲網印刷(shua)單點力(li)(li)(li)(li)片式傳(chuan)感(gan)器(qi)(qi)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)因(yin)為(wei)只受(shou)到軸向壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮變(bian)(bian)(bian)形(xing)而(er)引起(qi)了其(qi)阻(zu)(zu)值的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)，因(yin)此(ci)(ci)(ci)在(zai)(zai)測量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)可以(yi)被當(dang)作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)中的(de)(de)(de)可變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)對(dui)待；同時(shi)(shi)又(you)由于壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)引起(qi)了加在(zai)(zai)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)兩端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)，因(yin)此(ci)(ci)(ci)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)可以(yi)被當(dang)作(zuo)(zuo)檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)入變(bian)(bian)(bian)量(liang)信(xin)(xin)(xin)(xin)號(hao)。由于單點力(li)(li)(li)(li)傳(chuan)感(gan)器(qi)(qi)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)因(yin)外(wai)力(li)(li)(li)(li)作(zuo)(zuo)用而(er)引起(qi)了加在(zai)(zai)其(qi)兩端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)，反(fan)(fan)相比(bi)(bi)(bi)例(li)(li)(li)放(fang)(fang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)入端(duan)恰好(hao)是(shi)(shi)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)端(duan)；因(yin)此(ci)(ci)(ci)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)必然引起(qi)了反(fan)(fan)相比(bi)(bi)(bi)例(li)(li)(li)放(fang)(fang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)I輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)，也就是(shi)(shi)說單點力(li)(li)(li)(li)傳(chuan)感(gan)器(qi)(qi)受(shou)外(wai)力(li)(li)(li)(li)作(zuo)(zuo)用是(shi)(shi)可以(yi)引起(qi)測量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)中相應電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)的(de)(de)(de)。當(dang)外(wai)力(li)(li)(li)(li)作(zuo)(zuo)用于單點力(li)(li)(li)(li)傳(chuan)感(gan)器(qi)(qi)后(hou)由于壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)而(er)產生了一(yi)定(ding)的(de)(de)(de)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)，通過(guo)(guo)反(fan)(fan)相比(bi)(bi)(bi)例(li)(li)(li)放(fang)(fang)大(da)(da)器(qi)(qi)I將(jiang)(jiang)該信(xin)(xin)(xin)(xin)號(hao)放(fang)(fang)大(da)(da)；然后(hou)再通過(guo)(guo)低通濾(lv)(lv)波器(qi)(qi)將(jiang)(jiang)其(qi)他高頻干擾信(xin)(xin)(xin)(xin)號(hao)過(guo)(guo)濾(lv)(lv)或(huo)者去(qu)除(chu)；接著(zhu)再通過(guo)(guo)反(fan)(fan)相比(bi)(bi)(bi)例(li)(li)(li)放(fang)(fang)大(da)(da)器(qi)(qi)II將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)還原(yuan)到最初的(de)(de)(de)相位(因(yin)為(wei)前后(hou)經(jing)過(guo)(guo)了兩次反(fan)(fan)相放(fang)(fang)大(da)(da)，因(yin)此(ci)(ci)(ci)經(jing)過(guo)(guo)處(chu)(chu)(chu)(chu)理(li)后(hou)的(de)(de)(de)信(xin)(xin)(xin)(xin)號(hao)可以(yi)恢復到原(yuan)來的(de)(de)(de)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)值，同時(shi)(shi)將(jiang)(jiang)微(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)值放(fang)(fang)大(da)(da)了)；最后(hou)再通過(guo)(guo)A/D轉(zhuan)(zhuan)換器(qi)(qi)限壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)轉(zhuan)(zhuan)換將(jiang)(jiang)外(wai)力(li)(li)(li)(li)引起(qi)的(de)(de)(de)并經(jing)過(guo)(guo)處(chu)(chu)(chu)(chu)理(li)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)轉(zhuan)(zhuan)換為(wei)計算機能識別(bie)的(de)(de)(de)數字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)號(hao)，當(dang)然也可以(yi)直接將(jiang)(jiang)反(fan)(fan)相比(bi)(bi)(bi)例(li)(li)(li)放(fang)(fang)大(da)(da)器(qi)(qi)II處(chu)(chu)(chu)(chu)理(li)后(hou)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)號(hao)直接輸(shu)入至(zhi)可以(yi)接收該信(xin)(xin)(xin)(xin)號(hao)的(de)(de)(de)模(mo)擬顯(xian)示(shi)儀(yi)(yi)器(qi)(qi)或(huo)處(chu)(chu)(chu)(chu)理(li)儀(yi)(yi)器(qi)(qi)例(li)(li)(li)如模(mo)擬信(xin)(xin)(xin)(xin)號(hao)示(shi)波顯(xian)示(shi)器(qi)(qi)或(huo)者模(mo)擬信(xin)(xin)(xin)(xin)號(hao)處(chu)(chu)(chu)(chu)理(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)板。