技術領域

本(ben)發明涉(she)(she)及(ji)一種(zhong)傳感(gan)器(qi)及(ji)其(qi)制造方(fang)法(fa)，特(te)別(bie)涉(she)(she)及(ji)一種(zhong)用于在某(mou)一狹小接觸區域中對一點接觸物體間(jian)的壓力或集(ji)中力進行檢測的柔性(xing)單(dan)點力片式(shi)傳感(gan)器(qi)及(ji)其(qi)制造方(fang)法(fa)。

背景技術

壓(ya)力(li)(li)傳感(gan)器及檢(jian)測(ce)技術(shu)在(zai)航(hang)空(kong)航(hang)天、軍事(shi)工(gong)業、汽車、船舶(bo)制(zhi)造、工(gong)業自動(dong)化、醫(yi)學(xue)研(yan)究、生物(wu)醫(yi)療等領域(yu)中(zhong)(zhong)(zhong)(zhong)發揮著(zhu)重要(yao)的(de)作(zuo)用(yong)。然而在(zai)上(shang)述應用(yong)領域(yu)，許多場合(he)需在(zai)某(mou)一(yi)狹(xia)小(xiao)空(kong)間(jian)中(zhong)(zhong)(zhong)(zhong)對某(mou)一(yi)點接(jie)觸物(wu)體(ti)間(jian)的(de)壓(ya)力(li)(li)或集(ji)中(zhong)(zhong)(zhong)(zhong)力(li)(li)進行(xing)檢(jian)測(ce)，例如點接(jie)觸物(wu)體(ti)間(jian)在(zai)運動(dong)過(guo)程(cheng)中(zhong)(zhong)(zhong)(zhong)摩擦力(li)(li)相互作(zuo)用(yong)過(guo)程(cheng)的(de)研(yan)究、例如檢(jian)測(ce)空(kong)間(jian)凸輪與(yu)滾(gun)子(zi)從動(dong)件處于點接(jie)觸狀(zhuang)態下的(de)相互作(zuo)用(yong)力(li)(li)、檢(jian)測(ce)某(mou)一(yi)對牙齒(chi)嚙合(he)時的(de)相互作(zuo)用(yong)力(li)(li)等。由(you)于受到(dao)傳感(gan)器重量、體(ti)積以及工(gong)作(zuo)空(kong)間(jian)(如狹(xia)縫)的(de)限制(zhi)，這時傳統(tong)壓(ya)力(li)(li)傳感(gan)器便不(bu)(bu)能(neng)用(yong)于上(shang)述場合(he)下的(de)使用(yong)來檢(jian)測(ce)某(mou)一(yi)點接(jie)觸物(wu)體(ti)間(jian)的(de)壓(ya)力(li)(li)或集(ji)中(zhong)(zhong)(zhong)(zhong)力(li)(li)。即便勉強使用(yong)，也不(bu)(bu)能(neng)滿足操作(zuo)便捷的(de)要(yao)求，

發明內容

本發明針對傳統壓(ya)(ya)力(li)傳感(gan)器(qi)不能(neng)對某一點接觸物體間壓(ya)(ya)力(li)進行檢測、體積大、重量重、操作不方(fang)便(bian)的缺(que)點；提(ti)供了一種能(neng)夠檢測出(chu)某一點接觸物體間壓(ya)(ya)力(li)的柔性單(dan)點力(li)片式傳感(gan)器(qi)，該傳感(gan)器(qi)具有體積小(xiao)、重量輕、制作簡單(dan)、可低成(cheng)本批(pi)量化生產的特點，并且可重復使(shi)用(yong)、操作簡便(bian)。

本發明的另一個目的是提供一種該傳感器的制造方法。

為(wei)達(da)到(dao)上(shang)述目的(de)，本發明是采取如下(xia)技(ji)術方案予以(yi)實現的(de)：

一種柔(rou)性單點力片(pian)(pian)式傳感器，包括壓敏體(ti)、分(fen)別設(she)置(zhi)(zhi)在壓敏體(ti)上下(xia)(xia)端面(mian)的(de)(de)兩個電極(ji)(ji)連(lian)接(jie)(jie)片(pian)(pian)，其特征(zheng)在于，還包括有(you)形狀(zhuang)大小相同的(de)(de)上基(ji)(ji)板(ban)(ban)和下(xia)(xia)基(ji)(ji)板(ban)(ban)，上、下(xia)(xia)基(ji)(ji)板(ban)(ban)之間由粘接(jie)(jie)層封(feng)接(jie)(jie)；在上基(ji)(ji)板(ban)(ban)長(chang)度(du)方(fang)向的(de)(de)一側設(she)置(zhi)(zhi)有(you)一凸(tu)起(qi)；在相對該凸(tu)起(qi)的(de)(de)下(xia)(xia)基(ji)(ji)板(ban)(ban)上設(she)置(zhi)(zhi)有(you)一凹(ao)陷，該凹(ao)陷與(yu)所(suo)述凸(tu)起(qi)之間形成一個密閉的(de)(de)壓敏體(ti)室，其中(zhong)封(feng)裝有(you)所(suo)述的(de)(de)壓敏體(ti)及(ji)電極(ji)(ji)連(lian)接(jie)(jie)片(pian)(pian)，所(suo)述壓敏體(ti)室的(de)(de)大小剛(gang)好(hao)與(yu)壓敏體(ti)的(de)(de)大小吻合；所(suo)述下(xia)(xia)基(ji)(ji)板(ban)(ban)1沿其長(chang)度(du)方(fang)向設(she)置(zhi)(zhi)有(you)兩條相互平行(xing)的(de)(de)印(yin)刷(shua)(shua)電極(ji)(ji)6，每個印(yin)刷(shua)(shua)電極(ji)(ji)分(fen)別連(lian)接(jie)(jie)位于壓敏體(ti)上或(huo)下(xia)(xia)端面(mian)的(de)(de)電極(ji)(ji)連(lian)接(jie)(jie)片(pian)(pian)9和伸出下(xia)(xia)基(ji)(ji)板(ban)(ban)的(de)(de)電極(ji)(ji)引(yin)出片(pian)(pian)3；所(suo)述下(xia)(xia)基(ji)(ji)板(ban)(ban)上的(de)(de)兩條印(yin)刷(shua)(shua)電極(ji)(ji)6從連(lian)接(jie)(jie)電極(ji)(ji)連(lian)接(jie)(jie)片(pian)(pian)9到連(lian)接(jie)(jie)電極(ji)(ji)引(yin)出片(pian)(pian)3一段的(de)(de)上表面(mian)設(she)置(zhi)(zhi)有(you)電極(ji)(ji)保(bao)護膜。

一種上述柔(rou)性單點力片式傳感(gan)器的(de)制造(zao)方(fang)法，其特征在于，包(bao)括如下步驟：

a.先制備(bei)形(xing)狀大小相同的上基(ji)板(ban)和下(xia)基(ji)板(ban)，在上基(ji)板(ban)長(chang)度方向的一(yi)側設(she)置一(yi)凸(tu)起(qi)(qi)；在相對該(gai)凸(tu)起(qi)(qi)的下(xia)基(ji)板(ban)上設(she)置一(yi)凹陷；

b.將下基(ji)板1固定在絲網印刷機的(de)印刷臺上，用導(dao)電料漿沿下基(ji)板長(chang)度方(fang)向從(cong)遠離凹(ao)陷(xian)一(yi)(yi)側(ce)到(dao)凹(ao)陷(xian)的(de)上表面印制兩條(tiao)印刷電極，干燥后(hou)，在下基(ji)板遠離凹(ao)陷(xian)的(de)一(yi)(yi)側(ce)設(she)置兩個外露的(de)電極引出片3。

c.在下基板凹陷中(zhong)涂敷壓敏(min)電(dian)阻(zu)油墨，并放(fang)置一個(ge)壓敏(min)體，該(gai)壓敏(min)體上(shang)、下端面事先(xian)分別焊接(jie)(jie)好兩個(ge)電(dian)極(ji)連接(jie)(jie)片(pian)9，位(wei)于壓敏(min)體上(shang)、下端面的(de)兩電(dian)極(ji)連接(jie)(jie)片(pian)9分別連接(jie)(jie)至(zhi)位(wei)于下基板上(shang)的(de)兩條(tiao)(tiao)印(yin)刷電(dian)極(ji)6的(de)一端，兩條(tiao)(tiao)印(yin)刷電(dian)極(ji)6的(de)另一端連接(jie)(jie)外露的(de)兩個(ge)電(dian)極(ji)引出片(pian)3；同時(shi)，在上(shang)基板4的(de)凸起內表面上(shang)涂敷壓敏(min)電(dian)阻(zu)油墨。

d.在(zai)下基(ji)板(ban)的兩(liang)條印刷電極(ji)6上(shang)從連(lian)(lian)接電極(ji)連(lian)(lian)接片9到連(lian)(lian)接電極(ji)引出片3的一段上(shang)表(biao)面涂敷一層電極(ji)保(bao)護膜并干燥。

e.將上、下(xia)基板(ban)用(yong)粘接層復合，使所(suo)述凸起與凹陷(xian)之(zhi)間形成(cheng)一個的(de)(de)密閉壓敏(min)體(ti)(ti)室，將壓敏(min)體(ti)(ti)及電極(ji)(ji)連接片(pian)封裝在其(qi)內，壓敏(min)體(ti)(ti)室的(de)(de)大(da)(da)小剛好與壓敏(min)體(ti)(ti)的(de)(de)大(da)(da)小吻合，同時兩條印刷(shua)電極(ji)(ji)相互平行。

以上方法中，所(suo)述(shu)的印刷(shua)電(dian)極用(yong)(yong)導電(dian)漿料為銀導電(dian)漿料；所(suo)述(shu)的電(dian)極保(bao)護(hu)膜材料采(cai)用(yong)(yong)羥乙(yi)基(ji)纖維素；所(suo)述(shu)的壓敏(min)電(dian)阻油墨(mo)采(cai)用(yong)(yong)碳二硫化鉬油墨(mo)；所(suo)述(shu)的上、下基(ji)板采(cai)用(yong)(yong)聚氯乙(yi)烯材料制成矩形基(ji)片；所(suo)述(shu)的粘接層采(cai)用(yong)(yong)環氧樹脂。

本(ben)發明(ming)的(de)柔性單點(dian)力片(pian)式傳感(gan)器不需要外加保(bao)護裝置，不用(yong)將(jiang)(jiang)壓敏(min)(min)電(dian)(dian)阻直接(jie)置入被測對(dui)象(xiang)內部，只需將(jiang)(jiang)被測對(dui)象(xiang)的(de)點(dian)接(jie)觸(chu)部位與(yu)壓敏(min)(min)電(dian)(dian)阻所對(dui)應的(de)壓敏(min)(min)體室(shi)的(de)聚氯乙烯(xi)PVC絕(jue)緣(yuan)基片(pian)直接(jie)接(jie)觸(chu)即(ji)可；同(tong)時壓敏(min)(min)電(dian)(dian)阻材料在工作(zuo)過程中始終受(shou)到(dao)了聚氯乙烯(xi)PVC片(pian)的(de)絕(jue)緣(yuan)保(bao)護。由于兩條銀導電(dian)(dian)電(dian)(dian)極(ji)均處于羥乙基纖維素HEC的(de)絕(jue)緣(yuan)保(bao)護下，可有(you)效防止兩電(dian)(dian)極(ji)間(jian)間(jian)距太小而引起的(de)電(dian)(dian)子(zi)遷(qian)移(yi)所造(zao)成的(de)電(dian)(dian)極(ji)間(jian)短路現象(xiang)。該柔性單點(dian)力片(pian)式傳感(gan)器只有(you)電(dian)(dian)極(ji)引出片(pian)部分區域外露，因此具有(you)抗強干(gan)擾(rao)的(de)優(you)點(dian)。

本發明(ming)采用基(ji)于絲網印刷工藝的(de)(de)制造方法(fa)，使制得的(de)(de)單(dan)點力(li)(li)傳感(gan)器(qi)具有(you)重(zhong)量輕、體(ti)積小(片(pian)狀(zhuang))、成本低、制作簡單(dan)、可(ke)批量化(hua)生產(chan)的(de)(de)特(te)點，并可(ke)重(zhong)復(fu)使用、操作便捷。該傳感(gan)器(qi)可(ke)應(ying)用于工作空間狹小的(de)(de)某(mou)一(yi)點接(jie)觸物體(ti)間的(de)(de)壓力(li)(li)或(huo)集中力(li)(li)的(de)(de)檢(jian)測(ce)以及類似(si)特(te)殊應(ying)用場合。

附圖說明

圖(tu)1為本發(fa)明柔(rou)性單點力片式傳感器(qi)結構示意圖(tu)。圖(tu)中：1、下基板(ban)；2、粘接層(ceng)；3、電(dian)極引出片；4、上基板(ban)；5、電(dian)極保護膜；6、印刷電(dian)極；7、壓(ya)敏體。

圖(tu)2為圖(tu)1的俯視其及(ji)印刷電極(ji)的局部剖(pou)視圖(tu)。圖(tu)中：8、上基板(ban)凸起；9、電極(ji)連接片。

圖3為(wei)圖2的剖(pou)面圖。圖中：10、下(xia)基(ji)板(ban)凹陷。

圖4為本發(fa)明柔性單(dan)點力片式傳感器(qi)一個應(ying)用實(shi)例的測(ce)量電路(lu)原理圖。

具體實(shi)施方式

下面結合附圖及實(shi)施例(li)對本發明作進一(yi)步的詳(xiang)細說明。

如圖(tu)1-圖(tu)3所示，一(yi)(yi)種柔性單點力片(pian)(pian)(pian)式傳感器(qi)，包(bao)括上(shang)(shang)基(ji)板(ban)(ban)(ban)(ban)4和下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)1、壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)7、設(she)置在(zai)壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)7垂(chui)直兩端面的(de)(de)(de)兩個電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)(pian)(pian)9，上(shang)(shang)、下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)之間(jian)由環氧樹脂(zhi)粘接(jie)層(ceng)2封接(jie)；上(shang)(shang)、下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)4、1可由聚(ju)氯乙(yi)烯(PVC)制成(cheng)相(xiang)同大(da)小(xiao)尺寸(cun)的(de)(de)(de)矩形基(ji)片(pian)(pian)(pian)；在(zai)靠近上(shang)(shang)基(ji)板(ban)(ban)(ban)(ban)4長度方向的(de)(de)(de)左側設(she)置有(you)一(yi)(yi)凸(tu)(tu)起8；在(zai)相(xiang)對(dui)該(gai)凸(tu)(tu)起8的(de)(de)(de)下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)上(shang)(shang)設(she)置有(you)一(yi)(yi)凹(ao)陷10，該(gai)凹(ao)陷與凸(tu)(tu)起之間(jian)形成(cheng)一(yi)(yi)個的(de)(de)(de)密(mi)閉壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)室(shi)，其中封裝有(you)壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)7及(ji)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)(pian)(pian)9，壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)室(shi)的(de)(de)(de)大(da)小(xiao)剛好(hao)與壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)7的(de)(de)(de)大(da)小(xiao)吻合，壓(ya)(ya)(ya)敏(min)(min)(min)體(ti)(ti)7為(wei)圓(yuan)片(pian)(pian)(pian)或方塊形壓(ya)(ya)(ya)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)阻；下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)1上(shang)(shang)設(she)置有(you)兩條沿其長度方向相(xiang)互平(ping)行的(de)(de)(de)印刷電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)6，印刷電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)6為(wei)銀導電(dian)(dian)(dian)(dian)(dian)帶狀薄膜(mo)。每條印刷電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)在(zai)凹(ao)陷右邊沿處的(de)(de)(de)一(yi)(yi)端連(lian)(lian)接(jie)一(yi)(yi)個電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)連(lian)(lian)接(jie)片(pian)(pian)(pian)9；遠離凹(ao)陷到(dao)下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)1右側處的(de)(de)(de)另一(yi)(yi)端連(lian)(lian)接(jie)一(yi)(yi)個電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3，該(gai)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3外露下(xia)(xia)基(ji)板(ban)(ban)(ban)(ban)右側；印刷電(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)(pian)(pian)9到(dao)連(lian)(lian)接(jie)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)引(yin)出(chu)片(pian)(pian)(pian)3的(de)(de)(de)一(yi)(yi)段上(shang)(shang)表面設(she)置有(you)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)保護膜(mo)5，該(gai)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)保護膜(mo)為(wei)羥乙(yi)基(ji)纖維素(HEC)膜(mo)層(ceng)。

以上柔(rou)性單點(dian)力片式傳感(gan)器制造方(fang)法，包括(kuo)下述步驟：

a.先制備形狀(zhuang)大小相同的(de)上(shang)基板(ban)和(he)下基板(ban)，在(zai)上(shang)基板(ban)長度方(fang)向的(de)一側設(she)置(zhi)一凸(tu)起；在(zai)相對該凸(tu)起的(de)下基板(ban)上(shang)設(she)置(zhi)一凹陷；

b.將下(xia)基(ji)板(ban)(ban)1固定在絲網印(yin)刷(shua)機的印(yin)刷(shua)臺上，用導(dao)電料漿沿下(xia)基(ji)板(ban)(ban)長度(du)方向從遠離(li)凹(ao)陷(xian)一(yi)側到凹(ao)陷(xian)的上表面印(yin)制兩條印(yin)刷(shua)電極，干燥(zao)后，在下(xia)基(ji)板(ban)(ban)遠離(li)凹(ao)陷(xian)的一(yi)側設置兩個外露(lu)的電極引出片(pian)3。

c.在下(xia)(xia)基(ji)板(ban)凹陷中涂敷壓(ya)敏電阻油墨，并放置一(yi)個(ge)壓(ya)敏體，該壓(ya)敏體上(shang)、下(xia)(xia)端面事(shi)先分別焊(han)接(jie)好兩(liang)個(ge)電極連(lian)(lian)接(jie)片9，位(wei)(wei)于(yu)壓(ya)敏體上(shang)、下(xia)(xia)端面的(de)兩(liang)電極連(lian)(lian)接(jie)片9分別連(lian)(lian)接(jie)至(zhi)位(wei)(wei)于(yu)下(xia)(xia)基(ji)板(ban)上(shang)的(de)兩(liang)條印刷電極6，兩(liang)條印刷電極6的(de)另一(yi)端連(lian)(lian)接(jie)外露(lu)的(de)兩(liang)個(ge)電極引出(chu)片3；同時，在上(shang)基(ji)板(ban)4的(de)凸(tu)起內表面上(shang)涂敷壓(ya)敏電阻油墨。

d.在下基板(ban)的兩條印(yin)刷(shua)電(dian)極6上從連(lian)接(jie)電(dian)極連(lian)接(jie)片9到(dao)連(lian)接(jie)電(dian)極引出片3的一段上表面(mian)涂敷一層電(dian)極保護膜并干燥。

e.將上、下基(ji)板用粘接層復合，使所述凸起與凹陷之間形成一個的(de)密閉壓(ya)敏(min)體(ti)室，將壓(ya)敏(min)體(ti)及電極連接片封(feng)裝在其內，壓(ya)敏(min)體(ti)室的(de)大小(xiao)剛好與壓(ya)敏(min)體(ti)的(de)大小(xiao)吻合，同時兩條印(yin)刷電極相互平(ping)行。

當上述絲(si)網印刷(shua)單點力片式傳感(gan)器與外(wai)接(jie)電(dian)路連接(jie)并通過能正常工作的測(ce)試后，該傳感(gan)器外(wai)露(lu)部(bu)(bu)分(fen)電(dian)極(ji)引出片3與外(wai)接(jie)導線(xian)連接(jie)部(bu)(bu)分(fen)用絕緣(yuan)硅膠將其覆蓋以(yi)防銀電(dian)極(ji)長期(qi)處于在空(kong)氣中被(bei)氧化而削弱或(huo)喪失了其導電(dian)性能。

本發明柔性單(dan)點力(li)片式傳(chuan)感器的(de)(de)檢測原(yuan)理如(ru)下：當處于點接觸狀態時(shi)物(wu)體(ti)間的(de)(de)一(yi)集(ji)中(zhong)(zhong)載(zai)荷(集(ji)中(zhong)(zhong)力(li))作用于壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)7上(shang)時(shi)，壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)因受到了壓(ya)(ya)力(li)作用便發生了一(yi)定(ding)的(de)(de)壓(ya)(ya)縮變(bian)形(xing)，從而引起了壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)值的(de)(de)變(bian)化(hua)，反映在電(dian)(dian)(dian)(dian)路上(shang)便是兩(liang)銀導電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)6之(zhi)間電(dian)(dian)(dian)(dian)壓(ya)(ya)值的(de)(de)改變(bian)；根據壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)上(shang)電(dian)(dian)(dian)(dian)壓(ya)(ya)值相對于最(zui)初電(dian)(dian)(dian)(dian)壓(ya)(ya)值的(de)(de)變(bian)化(hua)量便可反映出點接觸處壓(ya)(ya)力(li)或集(ji)中(zhong)(zhong)載(zai)荷的(de)(de)大小。集(ji)中(zhong)(zhong)載(zai)荷與軸(zhou)向長(chang)度、電(dian)(dian)(dian)(dian)阻(zu)(zu)阻(zu)(zu)值與軸(zhou)向長(chang)度的(de)(de)關(guan)系、電(dian)(dian)(dian)(dian)壓(ya)(ya)與電(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)(de)關(guan)系如(ru)下：

ΔL=FLES---(1)

其中：L——壓敏電阻的原始(shi)厚度；

S——壓敏電阻(zu)的橫截面(mian)(mian)面(mian)(mian)積；

F——作用于壓(ya)敏電阻上的集中(zhong)載荷；

E——壓敏電阻的彈性模量；

ΔL——壓(ya)敏電阻油墨厚度的(de)改變量(liang)。

R=ρLS---(2)

其中：L——壓敏電阻油墨(mo)的厚度；

S——壓敏電阻油墨的橫截面面積(ji)；

ρ——壓敏電(dian)阻油墨的電(dian)阻率；

R——壓敏電阻油墨的電阻值。

                U＝IR        (3)

其中：I——流經壓敏電阻的電流值；

R——壓(ya)敏電阻油墨(mo)的(de)電阻值(zhi)；

U——壓(ya)敏電阻油(you)墨的電壓(ya)值；

如圖4所示，絲網印刷單(dan)點(dian)(dian)(dian)力(li)(li)片式傳(chuan)(chuan)(chuan)感器(qi)的(de)(de)(de)(de)(de)(de)(de)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)(yin)(yin)為(wei)只(zhi)受(shou)到(dao)軸向壓(ya)縮變(bian)(bian)(bian)形而引(yin)(yin)起(qi)了(le)其阻(zu)(zu)(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)，因(yin)(yin)(yin)此(ci)在測量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)可(ke)以(yi)(yi)被當作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)可(ke)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)對待(dai)；同時(shi)又由于(yu)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)引(yin)(yin)起(qi)了(le)加(jia)在壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)兩(liang)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)，因(yin)(yin)(yin)此(ci)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)可(ke)以(yi)(yi)被當作(zuo)檢測電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)(de)(de)輸(shu)入變(bian)(bian)(bian)量(liang)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)。由于(yu)單(dan)點(dian)(dian)(dian)力(li)(li)傳(chuan)(chuan)(chuan)感器(qi)的(de)(de)(de)(de)(de)(de)(de)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)(yin)(yin)外力(li)(li)作(zuo)用(yong)而引(yin)(yin)起(qi)了(le)加(jia)在其兩(liang)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)，反(fan)相(xiang)(xiang)比(bi)例放大電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)(de)(de)輸(shu)入端(duan)(duan)恰好(hao)是壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)端(duan)(duan)；因(yin)(yin)(yin)此(ci)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)必(bi)然引(yin)(yin)起(qi)了(le)反(fan)相(xiang)(xiang)比(bi)例放大電(dian)(dian)(dian)(dian)(dian)(dian)路I輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)，也就是說(shuo)單(dan)點(dian)(dian)(dian)力(li)(li)傳(chuan)(chuan)(chuan)感器(qi)受(shou)外力(li)(li)作(zuo)用(yong)是可(ke)以(yi)(yi)引(yin)(yin)起(qi)測量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)相(xiang)(xiang)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)的(de)(de)(de)(de)(de)(de)(de)。當外力(li)(li)作(zuo)用(yong)于(yu)單(dan)點(dian)(dian)(dian)力(li)(li)傳(chuan)(chuan)(chuan)感器(qi)后(hou)由于(yu)壓(ya)敏(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)變(bian)(bian)(bian)而產生了(le)一(yi)定的(de)(de)(de)(de)(de)(de)(de)微弱電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)，通過反(fan)相(xiang)(xiang)比(bi)例放大器(qi)I將(jiang)該信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)放大；然后(hou)再(zai)通過低(di)通濾(lv)波器(qi)將(jiang)其他高頻干擾信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)過濾(lv)或者去除；接著再(zai)通過反(fan)相(xiang)(xiang)比(bi)例放大器(qi)II將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)還原(yuan)到(dao)最(zui)初的(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)位(因(yin)(yin)(yin)為(wei)前(qian)后(hou)經過了(le)兩(liang)次反(fan)相(xiang)(xiang)放大，因(yin)(yin)(yin)此(ci)經過處(chu)理(li)(li)后(hou)的(de)(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)可(ke)以(yi)(yi)恢復到(dao)原(yuan)來(lai)的(de)(de)(de)(de)(de)(de)(de)正電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)值(zhi)，同時(shi)將(jiang)微弱電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)值(zhi)放大了(le))；最(zui)后(hou)再(zai)通過A/D轉換器(qi)限壓(ya)轉換將(jiang)外力(li)(li)引(yin)(yin)起(qi)的(de)(de)(de)(de)(de)(de)(de)并(bing)經過處(chu)理(li)(li)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)轉換為(wei)計算機能識(shi)別的(de)(de)(de)(de)(de)(de)(de)數字電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)，當然也可(ke)以(yi)(yi)直接將(jiang)反(fan)相(xiang)(xiang)比(bi)例放大器(qi)II處(chu)理(li)(li)后(hou)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)直接輸(shu)入至(zhi)可(ke)以(yi)(yi)接收該信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)模(mo)擬顯(xian)示儀器(qi)或處(chu)理(li)(li)儀器(qi)例如模(mo)擬信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)示波顯(xian)示器(qi)或者模(mo)擬信(xin)(xin)(xin)(xin)號(hao)(hao)(hao)處(chu)理(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)路板。