技術領域

本發明(ming)涉及一(yi)(yi)種傳感(gan)器(qi)(qi)及其制造方(fang)法，特別(bie)涉及一(yi)(yi)種用于(yu)在某一(yi)(yi)狹小接觸區域中(zhong)對(dui)一(yi)(yi)點(dian)接觸物體間(jian)的(de)壓力或集中(zhong)力進行檢測的(de)柔性(xing)單點(dian)力片式傳感(gan)器(qi)(qi)及其制造方(fang)法。

背景技術

壓(ya)力(li)傳感器及檢(jian)測技術(shu)在航(hang)空(kong)航(hang)天、軍(jun)事(shi)工業、汽車、船舶制造、工業自動(dong)化、醫學研究(jiu)、生物(wu)醫療等(deng)領域(yu)(yu)中(zhong)(zhong)發揮著重要(yao)的作用(yong)。然而(er)在上述應用(yong)領域(yu)(yu)，許多場(chang)合(he)需在某(mou)一(yi)狹(xia)小空(kong)間中(zhong)(zhong)對某(mou)一(yi)點接(jie)觸物(wu)體(ti)(ti)間的壓(ya)力(li)或集中(zhong)(zhong)力(li)進行檢(jian)測，例(li)如點接(jie)觸物(wu)體(ti)(ti)間在運動(dong)過(guo)程(cheng)(cheng)中(zhong)(zhong)摩擦力(li)相(xiang)互作用(yong)過(guo)程(cheng)(cheng)的研究(jiu)、例(li)如檢(jian)測空(kong)間凸輪與滾子從動(dong)件處于(yu)(yu)點接(jie)觸狀(zhuang)態下的相(xiang)互作用(yong)力(li)、檢(jian)測某(mou)一(yi)對牙齒嚙(nie)合(he)時的相(xiang)互作用(yong)力(li)等(deng)。由于(yu)(yu)受到傳感器重量、體(ti)(ti)積以及工作空(kong)間(如狹(xia)縫(feng))的限制，這時傳統(tong)壓(ya)力(li)傳感器便(bian)不能用(yong)于(yu)(yu)上述場(chang)合(he)下的使(shi)用(yong)來檢(jian)測某(mou)一(yi)點接(jie)觸物(wu)體(ti)(ti)間的壓(ya)力(li)或集中(zhong)(zhong)力(li)。即便(bian)勉強使(shi)用(yong)，也不能滿足(zu)操作便(bian)捷的要(yao)求(qiu)，

發明內容

本(ben)發(fa)明針對傳(chuan)(chuan)統壓力(li)傳(chuan)(chuan)感器(qi)(qi)不能對某一點(dian)(dian)接觸物體(ti)(ti)間壓力(li)進行(xing)檢測、體(ti)(ti)積大、重(zhong)量重(zhong)、操作不方便的(de)(de)缺點(dian)(dian)；提供了一種能夠檢測出某一點(dian)(dian)接觸物體(ti)(ti)間壓力(li)的(de)(de)柔(rou)性單點(dian)(dian)力(li)片(pian)式(shi)傳(chuan)(chuan)感器(qi)(qi)，該傳(chuan)(chuan)感器(qi)(qi)具(ju)有體(ti)(ti)積小、重(zhong)量輕、制作簡(jian)單、可低成本(ben)批量化生產的(de)(de)特點(dian)(dian)，并且可重(zhong)復使用、操作簡(jian)便。

本發(fa)明的另一個目(mu)的是提供一種(zhong)該傳感(gan)器的制造方法。

為達到上述目的，本發明是采取如下技(ji)術方案予以實現的：

一種柔性單點力片(pian)(pian)式(shi)傳感器，包括壓敏(min)(min)體(ti)(ti)、分(fen)別(bie)設置在壓敏(min)(min)體(ti)(ti)上(shang)(shang)(shang)下(xia)(xia)端(duan)面(mian)的(de)(de)兩個電(dian)(dian)(dian)極(ji)(ji)連接(jie)(jie)(jie)片(pian)(pian)，其特征在于(yu)，還包括有形狀大(da)小相同的(de)(de)上(shang)(shang)(shang)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)和下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)，上(shang)(shang)(shang)、下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)之(zhi)間(jian)由粘接(jie)(jie)(jie)層封接(jie)(jie)(jie)；在上(shang)(shang)(shang)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)長度方(fang)向的(de)(de)一側設置有一凸起(qi)；在相對該凸起(qi)的(de)(de)下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)上(shang)(shang)(shang)設置有一凹(ao)陷，該凹(ao)陷與所(suo)述(shu)凸起(qi)之(zhi)間(jian)形成(cheng)一個密閉的(de)(de)壓敏(min)(min)體(ti)(ti)室(shi)，其中封裝有所(suo)述(shu)的(de)(de)壓敏(min)(min)體(ti)(ti)及電(dian)(dian)(dian)極(ji)(ji)連接(jie)(jie)(jie)片(pian)(pian)，所(suo)述(shu)壓敏(min)(min)體(ti)(ti)室(shi)的(de)(de)大(da)小剛(gang)好與壓敏(min)(min)體(ti)(ti)的(de)(de)大(da)小吻合(he)；所(suo)述(shu)下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1沿其長度方(fang)向設置有兩條(tiao)(tiao)相互(hu)平行的(de)(de)印(yin)刷(shua)電(dian)(dian)(dian)極(ji)(ji)6，每個印(yin)刷(shua)電(dian)(dian)(dian)極(ji)(ji)分(fen)別(bie)連接(jie)(jie)(jie)位于(yu)壓敏(min)(min)體(ti)(ti)上(shang)(shang)(shang)或下(xia)(xia)端(duan)面(mian)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)連接(jie)(jie)(jie)片(pian)(pian)9和伸出(chu)(chu)下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)引(yin)出(chu)(chu)片(pian)(pian)3；所(suo)述(shu)下(xia)(xia)基(ji)(ji)(ji)板(ban)(ban)(ban)(ban)上(shang)(shang)(shang)的(de)(de)兩條(tiao)(tiao)印(yin)刷(shua)電(dian)(dian)(dian)極(ji)(ji)6從連接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)連接(jie)(jie)(jie)片(pian)(pian)9到連接(jie)(jie)(jie)電(dian)(dian)(dian)極(ji)(ji)引(yin)出(chu)(chu)片(pian)(pian)3一段的(de)(de)上(shang)(shang)(shang)表面(mian)設置有電(dian)(dian)(dian)極(ji)(ji)保護膜。

一種上述柔性單點力片式(shi)傳感器的制造方法，其特征在(zai)于，包括如下步驟：

a.先制備形狀大小相同(tong)的(de)(de)(de)上基(ji)(ji)板和下(xia)基(ji)(ji)板，在(zai)上基(ji)(ji)板長(chang)度方向的(de)(de)(de)一側設(she)置(zhi)一凸起；在(zai)相對該凸起的(de)(de)(de)下(xia)基(ji)(ji)板上設(she)置(zhi)一凹陷；

b.將(jiang)下基(ji)板1固定在絲(si)網印刷機(ji)的(de)印刷臺(tai)上(shang)，用導電料漿沿(yan)下基(ji)板長度方向(xiang)從(cong)遠(yuan)離(li)凹(ao)陷一側到凹(ao)陷的(de)上(shang)表面(mian)印制(zhi)兩(liang)條(tiao)印刷電極，干燥后，在下基(ji)板遠(yuan)離(li)凹(ao)陷的(de)一側設置兩(liang)個外露的(de)電極引出(chu)片(pian)3。

c.在下(xia)基(ji)板凹陷(xian)中涂敷(fu)壓(ya)敏電阻油墨，并放置(zhi)一(yi)個(ge)壓(ya)敏體，該壓(ya)敏體上(shang)、下(xia)端(duan)面(mian)(mian)事先分別(bie)焊接好(hao)兩(liang)個(ge)電極(ji)連接片9，位(wei)于(yu)壓(ya)敏體上(shang)、下(xia)端(duan)面(mian)(mian)的兩(liang)電極(ji)連接片9分別(bie)連接至位(wei)于(yu)下(xia)基(ji)板上(shang)的兩(liang)條印刷電極(ji)6的一(yi)端(duan)，兩(liang)條印刷電極(ji)6的另一(yi)端(duan)連接外露的兩(liang)個(ge)電極(ji)引出片3；同時(shi)，在上(shang)基(ji)板4的凸起內表面(mian)(mian)上(shang)涂敷(fu)壓(ya)敏電阻油墨。

d.在下基(ji)板的兩條(tiao)印(yin)刷電(dian)(dian)極(ji)6上從連(lian)(lian)接(jie)電(dian)(dian)極(ji)連(lian)(lian)接(jie)片9到連(lian)(lian)接(jie)電(dian)(dian)極(ji)引出片3的一(yi)段上表面(mian)涂(tu)敷一(yi)層電(dian)(dian)極(ji)保護膜并(bing)干燥。

e.將上(shang)、下基板用粘接層復合，使所述凸(tu)起與凹陷(xian)之間形成(cheng)一個(ge)的(de)密閉(bi)壓敏體室(shi)(shi)，將壓敏體及電極(ji)連接片(pian)封裝在其內，壓敏體室(shi)(shi)的(de)大(da)小(xiao)剛好與壓敏體的(de)大(da)小(xiao)吻(wen)合，同時(shi)兩條印刷電極(ji)相互平(ping)行(xing)。

以上(shang)方法中，所述(shu)的(de)印刷(shua)電(dian)極用(yong)導電(dian)漿(jiang)料為銀導電(dian)漿(jiang)料；所述(shu)的(de)電(dian)極保護膜材料采(cai)(cai)用(yong)羥乙基纖維(wei)素；所述(shu)的(de)壓敏電(dian)阻油墨采(cai)(cai)用(yong)碳(tan)二硫化鉬油墨；所述(shu)的(de)上(shang)、下基板采(cai)(cai)用(yong)聚(ju)氯(lv)乙烯材料制成矩形(xing)基片(pian)；所述(shu)的(de)粘接層采(cai)(cai)用(yong)環氧(yang)樹脂。

本發明的柔(rou)性(xing)單(dan)點(dian)力片(pian)式傳感器不(bu)需(xu)要外加保護(hu)(hu)裝置，不(bu)用(yong)將(jiang)壓(ya)(ya)敏電(dian)(dian)阻直(zhi)接(jie)(jie)置入被測對(dui)象內部，只需(xu)將(jiang)被測對(dui)象的點(dian)接(jie)(jie)觸部位與(yu)壓(ya)(ya)敏電(dian)(dian)阻所(suo)對(dui)應的壓(ya)(ya)敏體室的聚(ju)氯(lv)乙(yi)烯PVC絕緣(yuan)(yuan)基(ji)片(pian)直(zhi)接(jie)(jie)接(jie)(jie)觸即可(ke)；同時壓(ya)(ya)敏電(dian)(dian)阻材料在工作(zuo)過程(cheng)中始(shi)終(zhong)受到了聚(ju)氯(lv)乙(yi)烯PVC片(pian)的絕緣(yuan)(yuan)保護(hu)(hu)。由(you)于(yu)兩(liang)(liang)條銀(yin)導電(dian)(dian)電(dian)(dian)極(ji)均處(chu)于(yu)羥(qian)乙(yi)基(ji)纖維素(su)HEC的絕緣(yuan)(yuan)保護(hu)(hu)下，可(ke)有(you)效防止兩(liang)(liang)電(dian)(dian)極(ji)間(jian)間(jian)距太小而(er)引(yin)起的電(dian)(dian)子遷(qian)移所(suo)造成的電(dian)(dian)極(ji)間(jian)短路現象。該柔(rou)性(xing)單(dan)點(dian)力片(pian)式傳感器只有(you)電(dian)(dian)極(ji)引(yin)出(chu)片(pian)部分區域(yu)外露，因(yin)此(ci)具有(you)抗(kang)強干擾的優(you)點(dian)。

本發明采用(yong)(yong)基于(yu)絲網印刷工藝的制造方法(fa)，使制得的單點(dian)力(li)(li)傳感(gan)器具有重(zhong)量(liang)輕、體積小(片狀)、成本低、制作簡單、可(ke)批(pi)量(liang)化生產的特點(dian)，并可(ke)重(zhong)復使用(yong)(yong)、操作便捷。該(gai)傳感(gan)器可(ke)應(ying)(ying)用(yong)(yong)于(yu)工作空(kong)間狹小的某(mou)一點(dian)接(jie)觸物體間的壓力(li)(li)或(huo)集中(zhong)力(li)(li)的檢測以及(ji)類似特殊(shu)應(ying)(ying)用(yong)(yong)場合。

附圖說明

圖1為本發明柔性單點力片式傳感(gan)器(qi)結構示(shi)意圖。圖中：1、下(xia)基板；2、粘接層；3、電極(ji)(ji)(ji)引出片；4、上(shang)基板；5、電極(ji)(ji)(ji)保(bao)護膜；6、印刷(shua)電極(ji)(ji)(ji)；7、壓敏體。

圖2為圖1的(de)俯視(shi)其及印(yin)刷電(dian)極(ji)的(de)局部剖視(shi)圖。圖中：8、上基板(ban)凸起(qi)；9、電(dian)極(ji)連接片。

圖3為圖2的剖(pou)面圖。圖中(zhong)：10、下基板凹陷。

圖4為本發明柔性單(dan)點力片(pian)式(shi)傳感(gan)器(qi)一個(ge)應用實例的(de)測量電路原理圖。

具(ju)體實施方(fang)式

下面結合附圖(tu)及實施例對本發明作進一步的詳細說明。

如圖1-圖3所示，一(yi)種柔性單(dan)點力片(pian)式傳感器(qi)，包括上(shang)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4和下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1、壓敏(min)(min)體(ti)7、設(she)置(zhi)在(zai)壓敏(min)(min)體(ti)7垂直兩(liang)端面(mian)的(de)兩(liang)個(ge)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)9，上(shang)、下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)之(zhi)間由(you)環氧樹脂(zhi)粘(zhan)接(jie)(jie)(jie)層2封(feng)接(jie)(jie)(jie)；上(shang)、下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4、1可(ke)由(you)聚氯乙烯(PVC)制成相同大(da)(da)小尺寸的(de)矩形(xing)基(ji)(ji)(ji)(ji)片(pian)；在(zai)靠(kao)近上(shang)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4長度(du)方(fang)(fang)向(xiang)的(de)左(zuo)側(ce)設(she)置(zhi)有(you)(you)一(yi)凸(tu)起8；在(zai)相對該凸(tu)起8的(de)下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)上(shang)設(she)置(zhi)有(you)(you)一(yi)凹陷10，該凹陷與凸(tu)起之(zhi)間形(xing)成一(yi)個(ge)的(de)密(mi)閉壓敏(min)(min)體(ti)室，其(qi)中封(feng)裝(zhuang)有(you)(you)壓敏(min)(min)體(ti)7及電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)9，壓敏(min)(min)體(ti)室的(de)大(da)(da)小剛(gang)好與壓敏(min)(min)體(ti)7的(de)大(da)(da)小吻合，壓敏(min)(min)體(ti)7為圓片(pian)或方(fang)(fang)塊形(xing)壓敏(min)(min)電(dian)(dian)(dian)(dian)阻；下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1上(shang)設(she)置(zhi)有(you)(you)兩(liang)條沿其(qi)長度(du)方(fang)(fang)向(xiang)相互平行的(de)印(yin)刷(shua)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6，印(yin)刷(shua)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6為銀導電(dian)(dian)(dian)(dian)帶狀薄膜。每條印(yin)刷(shua)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)在(zai)凹陷右(you)邊(bian)沿處的(de)一(yi)端連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)一(yi)個(ge)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)9；遠(yuan)離凹陷到(dao)下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1右(you)側(ce)處的(de)另一(yi)端連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)一(yi)個(ge)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出片(pian)3，該電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出片(pian)3外露(lu)下(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)右(you)側(ce)；印(yin)刷(shua)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)6從連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)片(pian)9到(dao)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)引(yin)出片(pian)3的(de)一(yi)段上(shang)表面(mian)設(she)置(zhi)有(you)(you)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)保護膜5，該電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)保護膜為羥(qian)乙基(ji)(ji)(ji)(ji)纖維素(HEC)膜層。

以上柔性單點(dian)力(li)片式(shi)傳感器制造方(fang)法，包括下述步(bu)驟：

a.先制備形狀(zhuang)大小相同的(de)上基(ji)板(ban)和下基(ji)板(ban)，在(zai)(zai)上基(ji)板(ban)長度(du)方向(xiang)的(de)一(yi)側設置(zhi)一(yi)凸起；在(zai)(zai)相對該凸起的(de)下基(ji)板(ban)上設置(zhi)一(yi)凹陷；

b.將下(xia)基(ji)板1固定在絲網印(yin)刷(shua)機的(de)印(yin)刷(shua)臺上(shang)，用導電(dian)料漿(jiang)沿(yan)下(xia)基(ji)板長度方向從遠離(li)凹(ao)陷(xian)一側到凹(ao)陷(xian)的(de)上(shang)表(biao)面印(yin)制兩條印(yin)刷(shua)電(dian)極，干燥后，在下(xia)基(ji)板遠離(li)凹(ao)陷(xian)的(de)一側設(she)置(zhi)兩個外(wai)露的(de)電(dian)極引出(chu)片(pian)3。

c.在下基(ji)板(ban)凹陷中涂敷壓(ya)(ya)敏(min)(min)電阻油墨，并放置一個壓(ya)(ya)敏(min)(min)體(ti)，該壓(ya)(ya)敏(min)(min)體(ti)上(shang)(shang)、下端面事先分別焊接(jie)好兩(liang)個電極(ji)(ji)(ji)連(lian)接(jie)片9，位于壓(ya)(ya)敏(min)(min)體(ti)上(shang)(shang)、下端面的(de)(de)(de)兩(liang)電極(ji)(ji)(ji)連(lian)接(jie)片9分別連(lian)接(jie)至(zhi)位于下基(ji)板(ban)上(shang)(shang)的(de)(de)(de)兩(liang)條(tiao)(tiao)印刷電極(ji)(ji)(ji)6，兩(liang)條(tiao)(tiao)印刷電極(ji)(ji)(ji)6的(de)(de)(de)另(ling)一端連(lian)接(jie)外露的(de)(de)(de)兩(liang)個電極(ji)(ji)(ji)引(yin)出(chu)片3；同時，在上(shang)(shang)基(ji)板(ban)4的(de)(de)(de)凸(tu)起(qi)內表面上(shang)(shang)涂敷壓(ya)(ya)敏(min)(min)電阻油墨。

d.在下(xia)基板的兩條印刷電極(ji)6上(shang)從連接電極(ji)連接片(pian)9到連接電極(ji)引出片(pian)3的一段上(shang)表(biao)面涂敷一層電極(ji)保護(hu)膜并干燥。

e.將(jiang)上、下基板用粘接層復合，使(shi)所述(shu)凸(tu)起與凹陷之間(jian)形成一(yi)個的密(mi)閉(bi)壓敏(min)體(ti)室，將(jiang)壓敏(min)體(ti)及電極連接片(pian)封(feng)裝在(zai)其內(nei)，壓敏(min)體(ti)室的大小(xiao)剛好與壓敏(min)體(ti)的大小(xiao)吻合，同時(shi)兩條印刷電極相互平行。

當上(shang)述絲網印刷(shua)單點力片式傳感器與(yu)外(wai)接(jie)電(dian)路連接(jie)并通過能(neng)正常工(gong)作的測(ce)試后，該傳感器外(wai)露部(bu)分(fen)電(dian)極(ji)(ji)引出片3與(yu)外(wai)接(jie)導(dao)(dao)線連接(jie)部(bu)分(fen)用絕緣硅(gui)膠將其覆(fu)蓋以防銀電(dian)極(ji)(ji)長期處于在空氣(qi)中被氧化而削弱或喪失了其導(dao)(dao)電(dian)性能(neng)。

本發明柔性單點(dian)力片(pian)式傳(chuan)感器的(de)(de)檢測原(yuan)理(li)如下：當處于(yu)點(dian)接觸狀態時(shi)物(wu)體間的(de)(de)一集中(zhong)載(zai)(zai)(zai)荷(he)(集中(zhong)力)作用于(yu)壓(ya)(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)7上時(shi)，壓(ya)(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)因受到了(le)(le)壓(ya)(ya)(ya)(ya)力作用便發生了(le)(le)一定的(de)(de)壓(ya)(ya)(ya)(ya)縮變(bian)形，從而(er)引起了(le)(le)壓(ya)(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)的(de)(de)變(bian)化，反映在電(dian)(dian)(dian)(dian)(dian)路上便是兩(liang)銀導電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極6之間電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)的(de)(de)改(gai)變(bian)；根據壓(ya)(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)上電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)相(xiang)對(dui)于(yu)最(zui)初電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)的(de)(de)變(bian)化量便可反映出點(dian)接觸處壓(ya)(ya)(ya)(ya)力或集中(zhong)載(zai)(zai)(zai)荷(he)的(de)(de)大小。集中(zhong)載(zai)(zai)(zai)荷(he)與軸(zhou)向長度(du)、電(dian)(dian)(dian)(dian)(dian)阻(zu)阻(zu)值(zhi)與軸(zhou)向長度(du)的(de)(de)關系(xi)、電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)與電(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)關系(xi)如下：

ΔL=FLES---(1)

其中：L——壓敏電阻的原始厚度(du)；

S——壓敏電阻的橫截面(mian)面(mian)積；

F——作用于壓敏電阻上的(de)集中載荷；

E——壓敏電阻的彈性模量；

ΔL——壓(ya)敏電阻油墨厚度(du)的改(gai)變量。

R=ρLS---(2)

其中：L——壓敏(min)電阻油墨的厚度；

S——壓敏電阻油墨(mo)的橫截面面積(ji)；

ρ——壓(ya)敏(min)電阻油(you)墨的電阻率；

R——壓敏電(dian)阻油(you)墨(mo)的電(dian)阻值(zhi)。

                U＝IR        (3)

其中：I——流經(jing)壓敏電阻(zu)的電流值(zhi)；

R——壓敏電(dian)(dian)阻(zu)油墨的電(dian)(dian)阻(zu)值；

U——壓敏電阻油墨的電壓值；

如圖4所示(shi)(shi)，絲(si)網印刷單(dan)點(dian)力(li)片式傳(chuan)感(gan)(gan)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)因為只受到軸向壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮變(bian)(bian)(bian)(bian)形(xing)而引(yin)起(qi)了(le)(le)其(qi)阻(zu)(zu)(zu)(zu)值的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，因此(ci)(ci)在測(ce)量電(dian)(dian)路(lu)中(zhong)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)可(ke)(ke)(ke)(ke)以被當作電(dian)(dian)路(lu)中(zhong)的(de)(de)(de)(de)(de)可(ke)(ke)(ke)(ke)變(bian)(bian)(bian)(bian)電(dian)(dian)阻(zu)(zu)(zu)(zu)對待；同(tong)時(shi)又由(you)(you)于(yu)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)引(yin)起(qi)了(le)(le)加在壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)兩(liang)端(duan)(duan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，因此(ci)(ci)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)可(ke)(ke)(ke)(ke)以被當作檢測(ce)電(dian)(dian)路(lu)的(de)(de)(de)(de)(de)輸(shu)入(ru)變(bian)(bian)(bian)(bian)量信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)。由(you)(you)于(yu)單(dan)點(dian)力(li)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)因外力(li)作用而引(yin)起(qi)了(le)(le)加在其(qi)兩(liang)端(duan)(duan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，反(fan)相比(bi)(bi)例(li)放(fang)(fang)(fang)大(da)(da)電(dian)(dian)路(lu)的(de)(de)(de)(de)(de)輸(shu)入(ru)端(duan)(duan)恰好是(shi)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)端(duan)(duan)；因此(ci)(ci)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)端(duan)(duan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)必(bi)然(ran)引(yin)起(qi)了(le)(le)反(fan)相比(bi)(bi)例(li)放(fang)(fang)(fang)大(da)(da)電(dian)(dian)路(lu)I輸(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)值的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)，也(ye)就是(shi)說(shuo)單(dan)點(dian)力(li)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)受外力(li)作用是(shi)可(ke)(ke)(ke)(ke)以引(yin)起(qi)測(ce)量電(dian)(dian)路(lu)中(zhong)相應電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)的(de)(de)(de)(de)(de)。當外力(li)作用于(yu)單(dan)點(dian)力(li)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)后(hou)(hou)由(you)(you)于(yu)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)敏電(dian)(dian)阻(zu)(zu)(zu)(zu)值的(de)(de)(de)(de)(de)改(gai)(gai)(gai)(gai)(gai)變(bian)(bian)(bian)(bian)而產生了(le)(le)一定的(de)(de)(de)(de)(de)微弱電(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)，通(tong)過(guo)反(fan)相比(bi)(bi)例(li)放(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)I將(jiang)該信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)放(fang)(fang)(fang)大(da)(da)；然(ran)后(hou)(hou)再(zai)通(tong)過(guo)低通(tong)濾波器(qi)(qi)(qi)將(jiang)其(qi)他高頻干擾信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)過(guo)濾或(huo)者(zhe)去除；接著再(zai)通(tong)過(guo)反(fan)相比(bi)(bi)例(li)放(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)II將(jiang)電(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)還(huan)原到最初(chu)的(de)(de)(de)(de)(de)相位(因為前后(hou)(hou)經過(guo)了(le)(le)兩(liang)次反(fan)相放(fang)(fang)(fang)大(da)(da)，因此(ci)(ci)經過(guo)處(chu)(chu)理(li)(li)后(hou)(hou)的(de)(de)(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)可(ke)(ke)(ke)(ke)以恢復到原來(lai)的(de)(de)(de)(de)(de)正電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)值，同(tong)時(shi)將(jiang)微弱電(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)值放(fang)(fang)(fang)大(da)(da)了(le)(le))；最后(hou)(hou)再(zai)通(tong)過(guo)A/D轉換器(qi)(qi)(qi)限壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)轉換將(jiang)外力(li)引(yin)起(qi)的(de)(de)(de)(de)(de)并經過(guo)處(chu)(chu)理(li)(li)的(de)(de)(de)(de)(de)電(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)轉換為計算機能識別的(de)(de)(de)(de)(de)數字電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)，當然(ran)也(ye)可(ke)(ke)(ke)(ke)以直接將(jiang)反(fan)相比(bi)(bi)例(li)放(fang)(fang)(fang)大(da)(da)器(qi)(qi)(qi)II處(chu)(chu)理(li)(li)后(hou)(hou)的(de)(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)直接輸(shu)入(ru)至可(ke)(ke)(ke)(ke)以接收(shou)該信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)(de)模(mo)擬(ni)顯示(shi)(shi)儀(yi)器(qi)(qi)(qi)或(huo)處(chu)(chu)理(li)(li)儀(yi)器(qi)(qi)(qi)例(li)如模(mo)擬(ni)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)示(shi)(shi)波顯示(shi)(shi)器(qi)(qi)(qi)或(huo)者(zhe)模(mo)擬(ni)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)處(chu)(chu)理(li)(li)電(dian)(dian)路(lu)板。