技術領域

本發明(ming)涉(she)及一(yi)種(zhong)(zhong)傳(chuan)感器及其制造方(fang)法，特別涉(she)及一(yi)種(zhong)(zhong)用于在某(mou)一(yi)狹小接觸區域(yu)中對一(yi)點(dian)接觸物體間的(de)壓力或集中力進行檢(jian)測(ce)的(de)柔性單點(dian)力片式(shi)傳(chuan)感器及其制造方(fang)法。

背景技術

壓(ya)力(li)(li)傳感器(qi)及(ji)檢測(ce)(ce)(ce)(ce)技術在航空航天、軍(jun)事(shi)工(gong)業(ye)(ye)、汽車、船舶制造、工(gong)業(ye)(ye)自動(dong)化(hua)、醫學研(yan)究(jiu)、生物(wu)醫療(liao)等(deng)(deng)領域中發揮著(zhu)重要的(de)(de)作(zuo)(zuo)(zuo)用(yong)。然而(er)在上(shang)述應用(yong)領域，許多(duo)場合需在某一狹(xia)小空間(jian)中對某一點(dian)接(jie)(jie)觸物(wu)體(ti)間(jian)的(de)(de)壓(ya)力(li)(li)或(huo)集中力(li)(li)進行(xing)檢測(ce)(ce)(ce)(ce)，例(li)如點(dian)接(jie)(jie)觸物(wu)體(ti)間(jian)在運動(dong)過程(cheng)中摩(mo)擦力(li)(li)相互作(zuo)(zuo)(zuo)用(yong)過程(cheng)的(de)(de)研(yan)究(jiu)、例(li)如檢測(ce)(ce)(ce)(ce)空間(jian)凸輪與滾(gun)子(zi)從動(dong)件處于(yu)(yu)點(dian)接(jie)(jie)觸狀(zhuang)態下的(de)(de)相互作(zuo)(zuo)(zuo)用(yong)力(li)(li)、檢測(ce)(ce)(ce)(ce)某一對牙齒嚙合時的(de)(de)相互作(zuo)(zuo)(zuo)用(yong)力(li)(li)等(deng)(deng)。由于(yu)(yu)受到傳感器(qi)重量(liang)、體(ti)積以(yi)及(ji)工(gong)作(zuo)(zuo)(zuo)空間(jian)(如狹(xia)縫)的(de)(de)限(xian)制，這(zhe)時傳統壓(ya)力(li)(li)傳感器(qi)便(bian)不(bu)能(neng)用(yong)于(yu)(yu)上(shang)述場合下的(de)(de)使(shi)用(yong)來檢測(ce)(ce)(ce)(ce)某一點(dian)接(jie)(jie)觸物(wu)體(ti)間(jian)的(de)(de)壓(ya)力(li)(li)或(huo)集中力(li)(li)。即便(bian)勉強使(shi)用(yong)，也(ye)不(bu)能(neng)滿足操作(zuo)(zuo)(zuo)便(bian)捷的(de)(de)要求(qiu)，

發明內容

本發明針(zhen)對(dui)傳統壓力(li)傳感器(qi)(qi)不能(neng)對(dui)某一(yi)(yi)點(dian)接觸物體(ti)間壓力(li)進行檢(jian)(jian)測、體(ti)積大(da)、重量重、操作(zuo)不方便(bian)的缺(que)點(dian)；提供了一(yi)(yi)種能(neng)夠(gou)檢(jian)(jian)測出某一(yi)(yi)點(dian)接觸物體(ti)間壓力(li)的柔性單點(dian)力(li)片式(shi)傳感器(qi)(qi)，該傳感器(qi)(qi)具有體(ti)積小(xiao)、重量輕(qing)、制作(zuo)簡(jian)單、可(ke)低成(cheng)本批(pi)量化生產的特點(dian)，并且可(ke)重復(fu)使用、操作(zuo)簡(jian)便(bian)。

本(ben)發明的另一個目的是提供一種該傳感器的制造(zao)方法。

為(wei)達到上述(shu)目的，本發明(ming)是采(cai)取如下(xia)技術(shu)方案(an)予以實現的：

一(yi)(yi)(yi)種(zhong)柔性單點力片(pian)(pian)(pian)式傳(chuan)感器，包(bao)括壓(ya)(ya)敏(min)(min)體(ti)、分別(bie)設(she)(she)置在壓(ya)(ya)敏(min)(min)體(ti)上(shang)下端面(mian)的(de)兩(liang)個電(dian)(dian)極(ji)(ji)(ji)連(lian)(lian)接(jie)(jie)片(pian)(pian)(pian)，其(qi)特征在于(yu)，還包(bao)括有形(xing)狀大小(xiao)相同的(de)上(shang)基(ji)(ji)板(ban)和下基(ji)(ji)板(ban)，上(shang)、下基(ji)(ji)板(ban)之(zhi)間(jian)由粘接(jie)(jie)層封(feng)接(jie)(jie)；在上(shang)基(ji)(ji)板(ban)長度方向的(de)一(yi)(yi)(yi)側(ce)設(she)(she)置有一(yi)(yi)(yi)凸起(qi)(qi)；在相對該凸起(qi)(qi)的(de)下基(ji)(ji)板(ban)上(shang)設(she)(she)置有一(yi)(yi)(yi)凹陷，該凹陷與所述凸起(qi)(qi)之(zhi)間(jian)形(xing)成一(yi)(yi)(yi)個密閉(bi)的(de)壓(ya)(ya)敏(min)(min)體(ti)室，其(qi)中(zhong)封(feng)裝有所述的(de)壓(ya)(ya)敏(min)(min)體(ti)及電(dian)(dian)極(ji)(ji)(ji)連(lian)(lian)接(jie)(jie)片(pian)(pian)(pian)，所述壓(ya)(ya)敏(min)(min)體(ti)室的(de)大小(xiao)剛(gang)好與壓(ya)(ya)敏(min)(min)體(ti)的(de)大小(xiao)吻合；所述下基(ji)(ji)板(ban)1沿其(qi)長度方向設(she)(she)置有兩(liang)條相互平行的(de)印刷電(dian)(dian)極(ji)(ji)(ji)6，每個印刷電(dian)(dian)極(ji)(ji)(ji)分別(bie)連(lian)(lian)接(jie)(jie)位(wei)于(yu)壓(ya)(ya)敏(min)(min)體(ti)上(shang)或下端面(mian)的(de)電(dian)(dian)極(ji)(ji)(ji)連(lian)(lian)接(jie)(jie)片(pian)(pian)(pian)9和伸出(chu)(chu)下基(ji)(ji)板(ban)的(de)電(dian)(dian)極(ji)(ji)(ji)引出(chu)(chu)片(pian)(pian)(pian)3；所述下基(ji)(ji)板(ban)上(shang)的(de)兩(liang)條印刷電(dian)(dian)極(ji)(ji)(ji)6從連(lian)(lian)接(jie)(jie)電(dian)(dian)極(ji)(ji)(ji)連(lian)(lian)接(jie)(jie)片(pian)(pian)(pian)9到連(lian)(lian)接(jie)(jie)電(dian)(dian)極(ji)(ji)(ji)引出(chu)(chu)片(pian)(pian)(pian)3一(yi)(yi)(yi)段的(de)上(shang)表面(mian)設(she)(she)置有電(dian)(dian)極(ji)(ji)(ji)保護膜(mo)。

一(yi)種上述柔(rou)性單點力片(pian)式傳感器的制造(zao)方法，其特征在(zai)于，包括如下步(bu)驟(zou)：

a.先制備形狀大(da)小相(xiang)(xiang)同的上(shang)基(ji)板和下基(ji)板，在(zai)上(shang)基(ji)板長度方(fang)向的一(yi)側設(she)置(zhi)一(yi)凸(tu)起；在(zai)相(xiang)(xiang)對該(gai)凸(tu)起的下基(ji)板上(shang)設(she)置(zhi)一(yi)凹陷(xian)；

b.將(jiang)下(xia)基(ji)板1固定在絲網印刷機的(de)印刷臺上(shang)，用(yong)導電(dian)料漿沿下(xia)基(ji)板長度方(fang)向從(cong)遠離凹(ao)陷(xian)一(yi)側(ce)到凹(ao)陷(xian)的(de)上(shang)表面印制兩條(tiao)印刷電(dian)極，干燥(zao)后，在下(xia)基(ji)板遠離凹(ao)陷(xian)的(de)一(yi)側(ce)設置兩個外露(lu)的(de)電(dian)極引(yin)出片3。

c.在下(xia)基板凹陷中涂敷壓(ya)(ya)敏(min)電(dian)阻(zu)油墨(mo)，并(bing)放置一個(ge)壓(ya)(ya)敏(min)體，該壓(ya)(ya)敏(min)體上(shang)、下(xia)端(duan)面事先(xian)分(fen)別焊接好(hao)兩(liang)(liang)個(ge)電(dian)極(ji)(ji)連接片9，位(wei)于(yu)壓(ya)(ya)敏(min)體上(shang)、下(xia)端(duan)面的(de)兩(liang)(liang)電(dian)極(ji)(ji)連接片9分(fen)別連接至位(wei)于(yu)下(xia)基板上(shang)的(de)兩(liang)(liang)條印(yin)刷電(dian)極(ji)(ji)6的(de)一端(duan)，兩(liang)(liang)條印(yin)刷電(dian)極(ji)(ji)6的(de)另一端(duan)連接外(wai)露的(de)兩(liang)(liang)個(ge)電(dian)極(ji)(ji)引(yin)出片3；同(tong)時(shi)，在上(shang)基板4的(de)凸(tu)起(qi)內(nei)表面上(shang)涂敷壓(ya)(ya)敏(min)電(dian)阻(zu)油墨(mo)。

d.在下基(ji)板的兩(liang)條印刷(shua)電(dian)(dian)(dian)極(ji)6上從連接電(dian)(dian)(dian)極(ji)連接片9到連接電(dian)(dian)(dian)極(ji)引出片3的一段上表(biao)面涂敷(fu)一層電(dian)(dian)(dian)極(ji)保(bao)護膜并(bing)干燥。

e.將(jiang)上(shang)、下基板用粘接(jie)(jie)層(ceng)復(fu)合，使所述凸起與(yu)凹陷之間形成(cheng)一個的密閉壓(ya)敏體室，將(jiang)壓(ya)敏體及電極連接(jie)(jie)片封裝在其內，壓(ya)敏體室的大(da)小剛好(hao)與(yu)壓(ya)敏體的大(da)小吻合，同(tong)時兩條印(yin)刷電極相互平行。

以上方(fang)法中，所述的(de)(de)印(yin)刷電極用(yong)導電漿(jiang)(jiang)料(liao)為銀(yin)導電漿(jiang)(jiang)料(liao)；所述的(de)(de)電極保護(hu)膜材料(liao)采用(yong)羥乙基纖(xian)維(wei)素；所述的(de)(de)壓敏(min)電阻油(you)(you)墨采用(yong)碳二硫化鉬油(you)(you)墨；所述的(de)(de)上、下基板采用(yong)聚氯乙烯材料(liao)制成矩形基片；所述的(de)(de)粘(zhan)接層采用(yong)環氧樹脂。

本發明的(de)(de)柔性單點(dian)力片(pian)式傳(chuan)感器不(bu)需要(yao)外(wai)加保(bao)(bao)護(hu)裝置(zhi)(zhi)，不(bu)用將壓(ya)(ya)敏電阻(zu)(zu)直(zhi)接(jie)置(zhi)(zhi)入被(bei)測對象內(nei)部(bu)，只需將被(bei)測對象的(de)(de)點(dian)接(jie)觸(chu)(chu)部(bu)位(wei)與壓(ya)(ya)敏電阻(zu)(zu)所對應的(de)(de)壓(ya)(ya)敏體室的(de)(de)聚(ju)氯乙烯PVC絕緣(yuan)基片(pian)直(zhi)接(jie)接(jie)觸(chu)(chu)即可；同時壓(ya)(ya)敏電阻(zu)(zu)材料在工作過(guo)程中始終受(shou)到了聚(ju)氯乙烯PVC片(pian)的(de)(de)絕緣(yuan)保(bao)(bao)護(hu)。由于兩條銀導電電極(ji)均處于羥乙基纖維素HEC的(de)(de)絕緣(yuan)保(bao)(bao)護(hu)下，可有(you)效防(fang)止兩電極(ji)間(jian)間(jian)距(ju)太小而引起(qi)的(de)(de)電子遷移(yi)所造成的(de)(de)電極(ji)間(jian)短(duan)路現象。該柔性單點(dian)力片(pian)式傳(chuan)感器只有(you)電極(ji)引出片(pian)部(bu)分區域外(wai)露，因此具有(you)抗強干擾(rao)的(de)(de)優(you)點(dian)。

本(ben)發明采用(yong)基于(yu)絲網(wang)印刷工(gong)藝的(de)(de)制造方法(fa)，使制得(de)的(de)(de)單點力(li)傳感(gan)器(qi)具有重量輕、體積小(片狀)、成(cheng)本(ben)低、制作簡(jian)單、可(ke)批量化生(sheng)產的(de)(de)特點，并(bing)可(ke)重復使用(yong)、操作便捷。該(gai)傳感(gan)器(qi)可(ke)應用(yong)于(yu)工(gong)作空間狹(xia)小的(de)(de)某一(yi)點接(jie)觸物體間的(de)(de)壓(ya)力(li)或集中力(li)的(de)(de)檢(jian)測以(yi)及類(lei)似特殊應用(yong)場合(he)。

附圖說明

圖1為(wei)本發明柔性單點力(li)片(pian)式傳感(gan)器結構(gou)示意(yi)圖。圖中：1、下基板；2、粘接層；3、電(dian)極(ji)引出(chu)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的俯(fu)視其及印刷電極的局(ju)部(bu)剖視圖(tu)。圖(tu)中：8、上基(ji)板凸起；9、電極連接片。

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

圖4為本(ben)發明柔(rou)性單(dan)點(dian)力片式(shi)傳感器(qi)一個(ge)應(ying)用實例的(de)測量電路原理圖。

具體實施方式

下面結(jie)合附圖及實施例對(dui)本發明作進一步的詳細說明。

如圖1-圖3所示(shi)，一(yi)種柔(rou)性單點力片(pian)式傳感器，包括上(shang)基(ji)(ji)(ji)板(ban)(ban)4和(he)下(xia)基(ji)(ji)(ji)板(ban)(ban)1、壓(ya)(ya)敏(min)(min)(min)體7、設置(zhi)(zhi)在(zai)壓(ya)(ya)敏(min)(min)(min)體7垂直兩(liang)端面(mian)的(de)兩(liang)個(ge)電(dian)(dian)極(ji)連(lian)接(jie)(jie)片(pian)9，上(shang)、下(xia)基(ji)(ji)(ji)板(ban)(ban)之間由環氧樹脂粘接(jie)(jie)層(ceng)2封接(jie)(jie)；上(shang)、下(xia)基(ji)(ji)(ji)板(ban)(ban)4、1可由聚氯乙烯(xi)(PVC)制(zhi)成相(xiang)同(tong)大小尺寸的(de)矩形(xing)(xing)基(ji)(ji)(ji)片(pian)；在(zai)靠近上(shang)基(ji)(ji)(ji)板(ban)(ban)4長度(du)方(fang)向的(de)左側設置(zhi)(zhi)有一(yi)凸(tu)起(qi)8；在(zai)相(xiang)對該(gai)凸(tu)起(qi)8的(de)下(xia)基(ji)(ji)(ji)板(ban)(ban)上(shang)設置(zhi)(zhi)有一(yi)凹(ao)陷(xian)10，該(gai)凹(ao)陷(xian)與凸(tu)起(qi)之間形(xing)(xing)成一(yi)個(ge)的(de)密閉壓(ya)(ya)敏(min)(min)(min)體室，其中封裝(zhuang)有壓(ya)(ya)敏(min)(min)(min)體7及電(dian)(dian)極(ji)連(lian)接(jie)(jie)片(pian)9，壓(ya)(ya)敏(min)(min)(min)體室的(de)大小剛好與壓(ya)(ya)敏(min)(min)(min)體7的(de)大小吻合，壓(ya)(ya)敏(min)(min)(min)體7為(wei)圓片(pian)或方(fang)塊形(xing)(xing)壓(ya)(ya)敏(min)(min)(min)電(dian)(dian)阻；下(xia)基(ji)(ji)(ji)板(ban)(ban)1上(shang)設置(zhi)(zhi)有兩(liang)條沿其長度(du)方(fang)向相(xiang)互平行的(de)印(yin)刷電(dian)(dian)極(ji)6，印(yin)刷電(dian)(dian)極(ji)6為(wei)銀導電(dian)(dian)帶狀薄膜。每條印(yin)刷電(dian)(dian)極(ji)在(zai)凹(ao)陷(xian)右(you)(you)邊沿處(chu)的(de)一(yi)端連(lian)接(jie)(jie)一(yi)個(ge)電(dian)(dian)極(ji)連(lian)接(jie)(jie)片(pian)9；遠(yuan)離(li)凹(ao)陷(xian)到(dao)下(xia)基(ji)(ji)(ji)板(ban)(ban)1右(you)(you)側處(chu)的(de)另(ling)一(yi)端連(lian)接(jie)(jie)一(yi)個(ge)電(dian)(dian)極(ji)引出片(pian)3，該(gai)電(dian)(dian)極(ji)引出片(pian)3外露(lu)下(xia)基(ji)(ji)(ji)板(ban)(ban)右(you)(you)側；印(yin)刷電(dian)(dian)極(ji)6從連(lian)接(jie)(jie)電(dian)(dian)極(ji)連(lian)接(jie)(jie)片(pian)9到(dao)連(lian)接(jie)(jie)電(dian)(dian)極(ji)引出片(pian)3的(de)一(yi)段(duan)上(shang)表面(mian)設置(zhi)(zhi)有電(dian)(dian)極(ji)保(bao)(bao)護(hu)膜5，該(gai)電(dian)(dian)極(ji)保(bao)(bao)護(hu)膜為(wei)羥(qian)乙基(ji)(ji)(ji)纖(xian)維素(su)(HEC)膜層(ceng)。

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(de)上(shang)基(ji)板和下基(ji)板，在(zai)上(shang)基(ji)板長度(du)方向的(de)一側設置一凸起(qi)；在(zai)相對該凸起(qi)的(de)下基(ji)板上(shang)設置一凹陷；

b.將下(xia)基(ji)板(ban)1固(gu)定在(zai)絲網印刷機的(de)印刷臺上(shang)(shang)，用導電(dian)料漿沿(yan)下(xia)基(ji)板(ban)長度方(fang)向從遠(yuan)離(li)凹陷一(yi)側到(dao)凹陷的(de)上(shang)(shang)表面印制兩條(tiao)印刷電(dian)極，干燥后，在(zai)下(xia)基(ji)板(ban)遠(yuan)離(li)凹陷的(de)一(yi)側設置兩個外(wai)露(lu)的(de)電(dian)極引出片3。

c.在下(xia)基板(ban)(ban)凹陷中涂敷(fu)壓(ya)(ya)敏電阻油(you)(you)墨，并放置一個(ge)壓(ya)(ya)敏體，該壓(ya)(ya)敏體上、下(xia)端(duan)(duan)面事先分別(bie)焊接(jie)好兩個(ge)電極連接(jie)片(pian)9，位于壓(ya)(ya)敏體上、下(xia)端(duan)(duan)面的(de)兩電極連接(jie)片(pian)9分別(bie)連接(jie)至位于下(xia)基板(ban)(ban)上的(de)兩條印刷(shua)電極6，兩條印刷(shua)電極6的(de)另一端(duan)(duan)連接(jie)外露的(de)兩個(ge)電極引出片(pian)3；同時(shi)，在上基板(ban)(ban)4的(de)凸(tu)起內(nei)表面上涂敷(fu)壓(ya)(ya)敏電阻油(you)(you)墨。

d.在下基板的(de)兩條印刷電(dian)極(ji)6上從連接電(dian)極(ji)連接片(pian)9到(dao)連接電(dian)極(ji)引出片(pian)3的(de)一段上表面涂敷一層(ceng)電(dian)極(ji)保護膜并干燥(zao)。

e.將(jiang)上、下基板用粘接層復合(he)，使所述凸起與(yu)(yu)凹陷之間形成一個(ge)的(de)(de)密閉(bi)壓敏體(ti)室，將(jiang)壓敏體(ti)及電(dian)極連接片封裝(zhuang)在其內，壓敏體(ti)室的(de)(de)大(da)小剛(gang)好與(yu)(yu)壓敏體(ti)的(de)(de)大(da)小吻合(he)，同時兩條印刷電(dian)極相互平行。

當上述絲網印刷單點(dian)力片(pian)式傳(chuan)感器與外(wai)(wai)接(jie)電路(lu)連接(jie)并通過能(neng)正(zheng)常工作的測試后，該傳(chuan)感器外(wai)(wai)露部分電極引出片(pian)3與外(wai)(wai)接(jie)導線(xian)連接(jie)部分用絕緣硅膠(jiao)將(jiang)其(qi)覆蓋以防銀電極長期處于在(zai)空氣(qi)中被氧化而削(xue)弱或喪失了其(qi)導電性能(neng)。

本發明柔性單點力片式傳感(gan)器(qi)的(de)檢測原理如下(xia)：當(dang)處于(yu)點接觸(chu)狀態時物(wu)體間(jian)(jian)的(de)一集中(zhong)載荷(集中(zhong)力)作用(yong)于(yu)壓(ya)(ya)敏電(dian)阻(zu)7上(shang)時，壓(ya)(ya)敏電(dian)阻(zu)因受到(dao)了壓(ya)(ya)力作用(yong)便發生了一定的(de)壓(ya)(ya)縮(suo)變(bian)形，從而引起了壓(ya)(ya)敏電(dian)阻(zu)值的(de)變(bian)化(hua)，反(fan)映在電(dian)路上(shang)便是兩銀導電(dian)電(dian)極6之(zhi)間(jian)(jian)電(dian)壓(ya)(ya)值的(de)改變(bian)；根據壓(ya)(ya)敏電(dian)阻(zu)上(shang)電(dian)壓(ya)(ya)值相對于(yu)最初電(dian)壓(ya)(ya)值的(de)變(bian)化(hua)量便可反(fan)映出(chu)點接觸(chu)處壓(ya)(ya)力或(huo)集中(zhong)載荷的(de)大小。集中(zhong)載荷與(yu)軸向長度、電(dian)阻(zu)阻(zu)值與(yu)軸向長度的(de)關(guan)系、電(dian)壓(ya)(ya)與(yu)電(dian)阻(zu)的(de)關(guan)系如下(xia)：

ΔL=FLES---(1)

其中：L——壓敏電阻的(de)原始厚度(du)；

S——壓敏電(dian)阻(zu)的橫截面面積；

F——作用(yong)于壓(ya)敏電阻(zu)上的(de)集中載荷；

E——壓敏電(dian)阻的彈(dan)性模(mo)量；

ΔL——壓敏電阻油墨厚度的改變量。

R=ρLS---(2)

其中：L——壓(ya)敏電阻油(you)墨的厚度(du)；

S——壓(ya)敏電阻油墨的橫截面面積；

ρ——壓敏電阻(zu)油墨的(de)電阻(zu)率(lv)；

R——壓敏電阻(zu)油墨的電阻(zu)值(zhi)。

                U＝IR        (3)

其(qi)中：I——流(liu)經(jing)壓敏電阻的電流(liu)值；

R——壓敏(min)電阻油墨的電阻值；

U——壓(ya)(ya)敏(min)電阻(zu)油(you)墨的(de)電壓(ya)(ya)值；

如圖4所示，絲網印刷單(dan)點力(li)片式傳(chuan)感(gan)器的(de)(de)(de)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)因(yin)(yin)為只(zhi)受(shou)到(dao)(dao)軸向壓(ya)(ya)(ya)(ya)縮(suo)變(bian)(bian)(bian)(bian)形而(er)引(yin)起(qi)(qi)了其(qi)阻(zu)(zu)值(zhi)(zhi)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，因(yin)(yin)此(ci)(ci)(ci)在(zai)(zai)測(ce)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)可(ke)以(yi)(yi)(yi)被當(dang)(dang)作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中的(de)(de)(de)可(ke)變(bian)(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)對(dui)待；同(tong)時(shi)又由(you)(you)于(yu)(yu)(yu)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)引(yin)起(qi)(qi)了加在(zai)(zai)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)兩(liang)端(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，因(yin)(yin)此(ci)(ci)(ci)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)可(ke)以(yi)(yi)(yi)被當(dang)(dang)作(zuo)(zuo)檢測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)輸(shu)入(ru)(ru)變(bian)(bian)(bian)(bian)量(liang)(liang)信(xin)(xin)號(hao)(hao)(hao)。由(you)(you)于(yu)(yu)(yu)單(dan)點力(li)傳(chuan)感(gan)器的(de)(de)(de)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)因(yin)(yin)外力(li)作(zuo)(zuo)用而(er)引(yin)起(qi)(qi)了加在(zai)(zai)其(qi)兩(liang)端(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，反(fan)(fan)相(xiang)比(bi)例(li)(li)放(fang)(fang)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)輸(shu)入(ru)(ru)端(duan)(duan)(duan)(duan)恰好(hao)是壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)端(duan)(duan)(duan)(duan)；因(yin)(yin)此(ci)(ci)(ci)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)端(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)必然引(yin)起(qi)(qi)了反(fan)(fan)相(xiang)比(bi)例(li)(li)放(fang)(fang)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)I輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，也就(jiu)是說單(dan)點力(li)傳(chuan)感(gan)器受(shou)外力(li)作(zuo)(zuo)用是可(ke)以(yi)(yi)(yi)引(yin)起(qi)(qi)測(ce)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中相(xiang)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)的(de)(de)(de)。當(dang)(dang)外力(li)作(zuo)(zuo)用于(yu)(yu)(yu)單(dan)點力(li)傳(chuan)感(gan)器后(hou)由(you)(you)于(yu)(yu)(yu)壓(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)(zhi)的(de)(de)(de)改(gai)(gai)(gai)變(bian)(bian)(bian)(bian)而(er)產生了一定的(de)(de)(de)微弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)，通(tong)過(guo)反(fan)(fan)相(xiang)比(bi)例(li)(li)放(fang)(fang)大器I將(jiang)(jiang)該(gai)信(xin)(xin)號(hao)(hao)(hao)放(fang)(fang)大；然后(hou)再通(tong)過(guo)低通(tong)濾波器將(jiang)(jiang)其(qi)他高頻(pin)干擾信(xin)(xin)號(hao)(hao)(hao)過(guo)濾或(huo)者去除；接著再通(tong)過(guo)反(fan)(fan)相(xiang)比(bi)例(li)(li)放(fang)(fang)大器II將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)還原(yuan)到(dao)(dao)最(zui)初的(de)(de)(de)相(xiang)位(wei)(因(yin)(yin)為前后(hou)經過(guo)了兩(liang)次反(fan)(fan)相(xiang)放(fang)(fang)大，因(yin)(yin)此(ci)(ci)(ci)經過(guo)處理(li)后(hou)的(de)(de)(de)信(xin)(xin)號(hao)(hao)(hao)可(ke)以(yi)(yi)(yi)恢復到(dao)(dao)原(yuan)來的(de)(de)(de)正電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)，同(tong)時(shi)將(jiang)(jiang)微弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)值(zhi)(zhi)放(fang)(fang)大了)；最(zui)后(hou)再通(tong)過(guo)A/D轉(zhuan)換(huan)器限壓(ya)(ya)(ya)(ya)轉(zhuan)換(huan)將(jiang)(jiang)外力(li)引(yin)起(qi)(qi)的(de)(de)(de)并(bing)經過(guo)處理(li)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)轉(zhuan)換(huan)為計算機(ji)能識別(bie)的(de)(de)(de)數字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)，當(dang)(dang)然也可(ke)以(yi)(yi)(yi)直接將(jiang)(jiang)反(fan)(fan)相(xiang)比(bi)例(li)(li)放(fang)(fang)大器II處理(li)后(hou)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)信(xin)(xin)號(hao)(hao)(hao)直接輸(shu)入(ru)(ru)至可(ke)以(yi)(yi)(yi)接收該(gai)信(xin)(xin)號(hao)(hao)(hao)的(de)(de)(de)模擬(ni)顯示儀器或(huo)處理(li)儀器例(li)(li)如模擬(ni)信(xin)(xin)號(hao)(hao)(hao)示波顯示器或(huo)者模擬(ni)信(xin)(xin)號(hao)(hao)(hao)處理(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板。