技術領域

本發明涉及一種(zhong)傳感器(qi)及其(qi)制造方(fang)法(fa)，特(te)別涉及一種(zhong)用于在某一狹小接觸(chu)區域中對一點接觸(chu)物體間的壓力或集中力進行檢測的柔性單點力片式傳感器(qi)及其(qi)制造方(fang)法(fa)。

背景技術

壓力(li)傳感器(qi)及(ji)(ji)檢測技(ji)術在(zai)(zai)航空(kong)航天、軍事(shi)工(gong)業(ye)、汽(qi)車、船舶(bo)制(zhi)造、工(gong)業(ye)自動化、醫學研究、生(sheng)物醫療(liao)等領域(yu)中(zhong)(zhong)發揮著重(zhong)要的(de)作(zuo)(zuo)用(yong)(yong)。然而(er)在(zai)(zai)上述應用(yong)(yong)領域(yu)，許(xu)多場(chang)合(he)需在(zai)(zai)某一狹小空(kong)間中(zhong)(zhong)對某一點(dian)(dian)接觸(chu)物體間的(de)壓力(li)或(huo)集中(zhong)(zhong)力(li)進行檢測，例如(ru)點(dian)(dian)接觸(chu)物體間在(zai)(zai)運動過程(cheng)中(zhong)(zhong)摩擦力(li)相互作(zuo)(zuo)用(yong)(yong)過程(cheng)的(de)研究、例如(ru)檢測空(kong)間凸(tu)輪與滾子從(cong)動件處(chu)于點(dian)(dian)接觸(chu)狀態下的(de)相互作(zuo)(zuo)用(yong)(yong)力(li)、檢測某一對牙齒嚙合(he)時的(de)相互作(zuo)(zuo)用(yong)(yong)力(li)等。由于受到傳感器(qi)重(zhong)量、體積以及(ji)(ji)工(gong)作(zuo)(zuo)空(kong)間(如(ru)狹縫)的(de)限制(zhi)，這時傳統壓力(li)傳感器(qi)便不(bu)(bu)能(neng)用(yong)(yong)于上述場(chang)合(he)下的(de)使用(yong)(yong)來(lai)檢測某一點(dian)(dian)接觸(chu)物體間的(de)壓力(li)或(huo)集中(zhong)(zhong)力(li)。即便勉(mian)強使用(yong)(yong)，也不(bu)(bu)能(neng)滿足操作(zuo)(zuo)便捷(jie)的(de)要求(qiu)，

發明內容

本發(fa)明針對(dui)傳(chuan)統壓(ya)力傳(chuan)感(gan)器(qi)不能對(dui)某一(yi)點(dian)(dian)接觸物(wu)體間壓(ya)力進行檢測(ce)、體積大、重(zhong)量(liang)(liang)重(zhong)、操作不方(fang)便的缺點(dian)(dian)；提供了一(yi)種能夠檢測(ce)出某一(yi)點(dian)(dian)接觸物(wu)體間壓(ya)力的柔性單點(dian)(dian)力片(pian)式(shi)傳(chuan)感(gan)器(qi)，該(gai)傳(chuan)感(gan)器(qi)具有體積小、重(zhong)量(liang)(liang)輕、制作簡單、可(ke)低成本批量(liang)(liang)化(hua)生產的特(te)點(dian)(dian)，并(bing)且可(ke)重(zhong)復使用、操作簡便。

本發明的另一(yi)個目的是提供(gong)一(yi)種(zhong)該傳感器的制造方法(fa)。

為達(da)到上述目的，本發明是采取如下技術(shu)方案予(yu)以(yi)實現的：

一(yi)種柔性單點(dian)力(li)片(pian)式傳感(gan)器，包括壓(ya)敏(min)體(ti)、分別設置在(zai)(zai)壓(ya)敏(min)體(ti)上下端面的(de)(de)(de)(de)(de)(de)兩(liang)個電極(ji)連(lian)接(jie)(jie)(jie)片(pian)，其(qi)(qi)特征(zheng)在(zai)(zai)于，還包括有(you)(you)形狀大(da)小(xiao)相同的(de)(de)(de)(de)(de)(de)上基(ji)(ji)(ji)(ji)板(ban)(ban)和下基(ji)(ji)(ji)(ji)板(ban)(ban)，上、下基(ji)(ji)(ji)(ji)板(ban)(ban)之(zhi)間由粘接(jie)(jie)(jie)層(ceng)封接(jie)(jie)(jie)；在(zai)(zai)上基(ji)(ji)(ji)(ji)板(ban)(ban)長度(du)方(fang)向(xiang)的(de)(de)(de)(de)(de)(de)一(yi)側設置有(you)(you)一(yi)凸起(qi)；在(zai)(zai)相對該(gai)凸起(qi)的(de)(de)(de)(de)(de)(de)下基(ji)(ji)(ji)(ji)板(ban)(ban)上設置有(you)(you)一(yi)凹陷，該(gai)凹陷與所述(shu)凸起(qi)之(zhi)間形成一(yi)個密閉的(de)(de)(de)(de)(de)(de)壓(ya)敏(min)體(ti)室(shi)，其(qi)(qi)中封裝有(you)(you)所述(shu)的(de)(de)(de)(de)(de)(de)壓(ya)敏(min)體(ti)及電極(ji)連(lian)接(jie)(jie)(jie)片(pian)，所述(shu)壓(ya)敏(min)體(ti)室(shi)的(de)(de)(de)(de)(de)(de)大(da)小(xiao)剛好與壓(ya)敏(min)體(ti)的(de)(de)(de)(de)(de)(de)大(da)小(xiao)吻合(he)；所述(shu)下基(ji)(ji)(ji)(ji)板(ban)(ban)1沿其(qi)(qi)長度(du)方(fang)向(xiang)設置有(you)(you)兩(liang)條相互(hu)平行的(de)(de)(de)(de)(de)(de)印(yin)刷電極(ji)6，每個印(yin)刷電極(ji)分別連(lian)接(jie)(jie)(jie)位于壓(ya)敏(min)體(ti)上或下端面的(de)(de)(de)(de)(de)(de)電極(ji)連(lian)接(jie)(jie)(jie)片(pian)9和伸(shen)出下基(ji)(ji)(ji)(ji)板(ban)(ban)的(de)(de)(de)(de)(de)(de)電極(ji)引出片(pian)3；所述(shu)下基(ji)(ji)(ji)(ji)板(ban)(ban)上的(de)(de)(de)(de)(de)(de)兩(liang)條印(yin)刷電極(ji)6從連(lian)接(jie)(jie)(jie)電極(ji)連(lian)接(jie)(jie)(jie)片(pian)9到連(lian)接(jie)(jie)(jie)電極(ji)引出片(pian)3一(yi)段的(de)(de)(de)(de)(de)(de)上表(biao)面設置有(you)(you)電極(ji)保護膜。

一種上述柔(rou)性單(dan)點力片式(shi)傳感器的制(zhi)造方法，其(qi)特征(zheng)在于，包(bao)括如下步驟：

a.先制(zhi)備形狀大小相同的上基板(ban)(ban)和下基板(ban)(ban)，在(zai)上基板(ban)(ban)長度方向的一(yi)側(ce)設置一(yi)凸起(qi)；在(zai)相對(dui)該凸起(qi)的下基板(ban)(ban)上設置一(yi)凹陷；

b.將下基(ji)板1固定在絲網印(yin)刷(shua)機的印(yin)刷(shua)臺上，用導電料漿沿下基(ji)板長度方(fang)向從遠(yuan)離(li)凹陷一側到凹陷的上表面(mian)印(yin)制兩(liang)條印(yin)刷(shua)電極(ji)，干(gan)燥(zao)后，在下基(ji)板遠(yuan)離(li)凹陷的一側設置(zhi)兩(liang)個外(wai)露的電極(ji)引出片3。

c.在下(xia)基(ji)板凹陷中涂(tu)敷(fu)壓(ya)敏(min)電(dian)(dian)阻(zu)油墨，并放(fang)置一個壓(ya)敏(min)體，該壓(ya)敏(min)體上(shang)、下(xia)端面(mian)事先分別焊接好(hao)兩(liang)個電(dian)(dian)極(ji)連接片9，位(wei)于壓(ya)敏(min)體上(shang)、下(xia)端面(mian)的(de)(de)兩(liang)電(dian)(dian)極(ji)連接片9分別連接至位(wei)于下(xia)基(ji)板上(shang)的(de)(de)兩(liang)條印刷(shua)(shua)電(dian)(dian)極(ji)6的(de)(de)一端，兩(liang)條印刷(shua)(shua)電(dian)(dian)極(ji)6的(de)(de)另一端連接外露(lu)的(de)(de)兩(liang)個電(dian)(dian)極(ji)引出片3；同時，在上(shang)基(ji)板4的(de)(de)凸起(qi)內表(biao)面(mian)上(shang)涂(tu)敷(fu)壓(ya)敏(min)電(dian)(dian)阻(zu)油墨。

d.在下(xia)基板的(de)兩條印刷電(dian)極6上(shang)從(cong)連接電(dian)極連接片9到連接電(dian)極引出(chu)片3的(de)一段上(shang)表面涂敷(fu)一層電(dian)極保護膜(mo)并干燥。

e.將上(shang)、下基板用粘接層復合(he)，使所(suo)述凸起與凹陷之(zhi)間形成一個(ge)的密閉壓(ya)(ya)敏(min)體(ti)(ti)室(shi)，將壓(ya)(ya)敏(min)體(ti)(ti)及電極(ji)連接片(pian)封裝在其(qi)內，壓(ya)(ya)敏(min)體(ti)(ti)室(shi)的大(da)小(xiao)剛(gang)好與壓(ya)(ya)敏(min)體(ti)(ti)的大(da)小(xiao)吻合(he)，同時兩條印刷電極(ji)相(xiang)互平(ping)行。

以(yi)上方(fang)法中，所述的(de)(de)(de)(de)印刷電極用導(dao)電漿(jiang)料為銀導(dao)電漿(jiang)料；所述的(de)(de)(de)(de)電極保護(hu)膜材(cai)料采用羥乙基(ji)纖(xian)維素；所述的(de)(de)(de)(de)壓敏(min)電阻(zu)油(you)墨(mo)采用碳二硫化(hua)鉬油(you)墨(mo)；所述的(de)(de)(de)(de)上、下基(ji)板采用聚氯乙烯材(cai)料制成矩形基(ji)片；所述的(de)(de)(de)(de)粘接層(ceng)采用環氧樹脂。

本(ben)發明的(de)(de)柔性單(dan)點(dian)力(li)(li)片(pian)(pian)式傳感器不需要外加保(bao)護(hu)裝置，不用將壓(ya)敏(min)電(dian)阻直接置入被測對(dui)象(xiang)內部，只需將被測對(dui)象(xiang)的(de)(de)點(dian)接觸部位與壓(ya)敏(min)電(dian)阻所對(dui)應的(de)(de)壓(ya)敏(min)體室的(de)(de)聚(ju)氯乙(yi)(yi)烯PVC絕緣基片(pian)(pian)直接接觸即可(ke)；同時壓(ya)敏(min)電(dian)阻材(cai)料在工作過程中始(shi)終(zhong)受(shou)到(dao)了(le)聚(ju)氯乙(yi)(yi)烯PVC片(pian)(pian)的(de)(de)絕緣保(bao)護(hu)。由(you)于兩條(tiao)銀導電(dian)電(dian)極(ji)均處(chu)于羥乙(yi)(yi)基纖維(wei)素(su)HEC的(de)(de)絕緣保(bao)護(hu)下，可(ke)有效防止(zhi)兩電(dian)極(ji)間間距(ju)太(tai)小而引起的(de)(de)電(dian)子遷移(yi)所造成(cheng)的(de)(de)電(dian)極(ji)間短路現象(xiang)。該柔性單(dan)點(dian)力(li)(li)片(pian)(pian)式傳感器只有電(dian)極(ji)引出片(pian)(pian)部分(fen)區域外露(lu)，因此具有抗強干擾的(de)(de)優(you)點(dian)。

本發明采用基于絲網印(yin)刷工藝(yi)的(de)(de)(de)制(zhi)造方(fang)法，使制(zhi)得的(de)(de)(de)單點(dian)力傳(chuan)感器具有重量輕、體積小(片狀)、成本低、制(zhi)作(zuo)簡單、可(ke)批量化生產的(de)(de)(de)特(te)點(dian)，并(bing)可(ke)重復使用、操作(zuo)便捷。該傳(chuan)感器可(ke)應用于工作(zuo)空間(jian)(jian)狹小的(de)(de)(de)某一點(dian)接(jie)觸物體間(jian)(jian)的(de)(de)(de)壓力或集中力的(de)(de)(de)檢測以及類似特(te)殊應用場(chang)合。

附圖說明

圖1為本發明柔(rou)性(xing)單點力片式傳感器結構(gou)示意圖。圖中：1、下基板(ban)；2、粘接層；3、電(dian)極(ji)(ji)引出片；4、上基板(ban)；5、電(dian)極(ji)(ji)保護膜；6、印刷電(dian)極(ji)(ji)；7、壓敏體。

圖(tu)(tu)2為圖(tu)(tu)1的俯(fu)視其(qi)及印刷(shua)電極的局(ju)部剖視圖(tu)(tu)。圖(tu)(tu)中：8、上基板凸起；9、電極連接片(pian)。

圖(tu)3為圖(tu)2的(de)剖面圖(tu)。圖(tu)中：10、下基板(ban)凹陷。

圖(tu)4為本發明(ming)柔性單點(dian)力片式傳感器(qi)一(yi)個應用實例(li)的測量電路原理圖(tu)。

具體實(shi)施方式

下面結(jie)合(he)附圖及實施例對(dui)本發明作進一步的詳(xiang)細說明。

如圖1-圖3所(suo)示，一(yi)(yi)種柔性(xing)單(dan)點力(li)片(pian)(pian)式傳感器(qi)，包括上(shang)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4和下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1、壓(ya)敏(min)(min)體(ti)7、設(she)置(zhi)在壓(ya)敏(min)(min)體(ti)7垂直兩(liang)(liang)端(duan)面的(de)(de)(de)兩(liang)(liang)個(ge)電(dian)(dian)極(ji)(ji)連接(jie)(jie)片(pian)(pian)9，上(shang)、下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)之(zhi)間由(you)環氧樹脂粘接(jie)(jie)層2封接(jie)(jie)；上(shang)、下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4、1可(ke)由(you)聚氯(lv)乙(yi)烯(PVC)制成相同大(da)小(xiao)尺寸的(de)(de)(de)矩形(xing)基(ji)(ji)(ji)(ji)片(pian)(pian)；在靠近上(shang)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)4長(chang)度方向的(de)(de)(de)左側設(she)置(zhi)有一(yi)(yi)凸起(qi)8；在相對(dui)該(gai)凸起(qi)8的(de)(de)(de)下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)上(shang)設(she)置(zhi)有一(yi)(yi)凹(ao)陷(xian)(xian)(xian)10，該(gai)凹(ao)陷(xian)(xian)(xian)與凸起(qi)之(zhi)間形(xing)成一(yi)(yi)個(ge)的(de)(de)(de)密(mi)閉壓(ya)敏(min)(min)體(ti)室，其中封裝有壓(ya)敏(min)(min)體(ti)7及電(dian)(dian)極(ji)(ji)連接(jie)(jie)片(pian)(pian)9，壓(ya)敏(min)(min)體(ti)室的(de)(de)(de)大(da)小(xiao)剛好與壓(ya)敏(min)(min)體(ti)7的(de)(de)(de)大(da)小(xiao)吻合(he)，壓(ya)敏(min)(min)體(ti)7為圓片(pian)(pian)或方塊形(xing)壓(ya)敏(min)(min)電(dian)(dian)阻(zu)；下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1上(shang)設(she)置(zhi)有兩(liang)(liang)條沿其長(chang)度方向相互平(ping)行(xing)的(de)(de)(de)印(yin)(yin)刷電(dian)(dian)極(ji)(ji)6，印(yin)(yin)刷電(dian)(dian)極(ji)(ji)6為銀導電(dian)(dian)帶(dai)狀薄(bo)膜(mo)。每(mei)條印(yin)(yin)刷電(dian)(dian)極(ji)(ji)在凹(ao)陷(xian)(xian)(xian)右(you)邊沿處(chu)的(de)(de)(de)一(yi)(yi)端(duan)連接(jie)(jie)一(yi)(yi)個(ge)電(dian)(dian)極(ji)(ji)連接(jie)(jie)片(pian)(pian)9；遠離凹(ao)陷(xian)(xian)(xian)到(dao)下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)1右(you)側處(chu)的(de)(de)(de)另一(yi)(yi)端(duan)連接(jie)(jie)一(yi)(yi)個(ge)電(dian)(dian)極(ji)(ji)引出片(pian)(pian)3，該(gai)電(dian)(dian)極(ji)(ji)引出片(pian)(pian)3外露下(xia)(xia)基(ji)(ji)(ji)(ji)板(ban)(ban)(ban)(ban)右(you)側；印(yin)(yin)刷電(dian)(dian)極(ji)(ji)6從連接(jie)(jie)電(dian)(dian)極(ji)(ji)連接(jie)(jie)片(pian)(pian)9到(dao)連接(jie)(jie)電(dian)(dian)極(ji)(ji)引出片(pian)(pian)3的(de)(de)(de)一(yi)(yi)段上(shang)表面設(she)置(zhi)有電(dian)(dian)極(ji)(ji)保(bao)護(hu)膜(mo)5，該(gai)電(dian)(dian)極(ji)(ji)保(bao)護(hu)膜(mo)為羥(qian)乙(yi)基(ji)(ji)(ji)(ji)纖維(wei)素(HEC)膜(mo)層。

以(yi)上柔性(xing)單點力片式傳感器制造方法，包括下述步(bu)驟：

a.先(xian)制備形狀大小相同的(de)上(shang)基(ji)板和下基(ji)板，在上(shang)基(ji)板長度方向的(de)一(yi)側設置一(yi)凸(tu)起；在相對該凸(tu)起的(de)下基(ji)板上(shang)設置一(yi)凹陷；

b.將下(xia)(xia)基(ji)板1固定在絲網印刷(shua)機的印刷(shua)臺上，用(yong)導(dao)電(dian)料漿(jiang)沿(yan)下(xia)(xia)基(ji)板長度方向從(cong)遠離(li)凹(ao)陷一側到凹(ao)陷的上表(biao)面印制兩(liang)條印刷(shua)電(dian)極，干燥后，在下(xia)(xia)基(ji)板遠離(li)凹(ao)陷的一側設(she)置兩(liang)個外露的電(dian)極引(yin)出片3。

c.在(zai)下(xia)基板(ban)(ban)凹陷中涂敷壓(ya)敏(min)電阻油(you)墨(mo)，并(bing)放置一(yi)個壓(ya)敏(min)體(ti)，該壓(ya)敏(min)體(ti)上(shang)、下(xia)端面(mian)事先分別(bie)焊(han)接好兩(liang)個電極連(lian)接片(pian)9，位(wei)(wei)于壓(ya)敏(min)體(ti)上(shang)、下(xia)端面(mian)的兩(liang)電極連(lian)接片(pian)9分別(bie)連(lian)接至位(wei)(wei)于下(xia)基板(ban)(ban)上(shang)的兩(liang)條印刷(shua)電極6，兩(liang)條印刷(shua)電極6的另一(yi)端連(lian)接外露(lu)的兩(liang)個電極引出片(pian)3；同時，在(zai)上(shang)基板(ban)(ban)4的凸(tu)起內表面(mian)上(shang)涂敷壓(ya)敏(min)電阻油(you)墨(mo)。

d.在下基板的兩條印刷(shua)電極(ji)6上從(cong)連接(jie)電極(ji)連接(jie)片9到(dao)連接(jie)電極(ji)引出片3的一段上表面涂敷一層電極(ji)保護膜并(bing)干燥(zao)。

e.將上(shang)、下基板(ban)用粘接層(ceng)復合(he)，使所述凸起(qi)與凹陷之間(jian)形(xing)成一個的密閉(bi)壓(ya)敏體(ti)室(shi)(shi)，將壓(ya)敏體(ti)及電極(ji)連接片封裝在其內，壓(ya)敏體(ti)室(shi)(shi)的大小(xiao)剛(gang)好與壓(ya)敏體(ti)的大小(xiao)吻合(he)，同(tong)時兩條印刷電極(ji)相互平(ping)行(xing)。

當(dang)上述絲網印(yin)刷單點(dian)力片式傳感器與(yu)外接(jie)(jie)(jie)電路連接(jie)(jie)(jie)并通過能(neng)正常工作的測試(shi)后，該傳感器外露部分(fen)電極引出片3與(yu)外接(jie)(jie)(jie)導(dao)線連接(jie)(jie)(jie)部分(fen)用(yong)絕(jue)緣硅膠(jiao)將其覆蓋以防銀電極長期處于在(zai)空氣中(zhong)被氧化而削弱或喪失了其導(dao)電性能(neng)。

本發(fa)明柔(rou)性單點力片式傳感器的(de)(de)(de)(de)檢測(ce)原(yuan)理如下：當處于(yu)點接(jie)觸狀(zhuang)態時物體間的(de)(de)(de)(de)一(yi)(yi)集(ji)中(zhong)(zhong)載(zai)荷(he)(集(ji)中(zhong)(zhong)力)作用于(yu)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻(zu)(zu)7上時，壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻(zu)(zu)因(yin)受到了壓(ya)(ya)(ya)力作用便(bian)發(fa)生了一(yi)(yi)定的(de)(de)(de)(de)壓(ya)(ya)(ya)縮變(bian)(bian)形，從而(er)引起了壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻(zu)(zu)值(zhi)的(de)(de)(de)(de)變(bian)(bian)化，反映(ying)在(zai)電(dian)(dian)(dian)路上便(bian)是兩銀導電(dian)(dian)(dian)電(dian)(dian)(dian)極6之(zhi)間電(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)的(de)(de)(de)(de)改變(bian)(bian)；根(gen)據壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻(zu)(zu)上電(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)相對(dui)于(yu)最初電(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)的(de)(de)(de)(de)變(bian)(bian)化量便(bian)可反映(ying)出點接(jie)觸處壓(ya)(ya)(ya)力或集(ji)中(zhong)(zhong)載(zai)荷(he)的(de)(de)(de)(de)大小。集(ji)中(zhong)(zhong)載(zai)荷(he)與軸向(xiang)(xiang)長度(du)、電(dian)(dian)(dian)阻(zu)(zu)阻(zu)(zu)值(zhi)與軸向(xiang)(xiang)長度(du)的(de)(de)(de)(de)關(guan)系(xi)、電(dian)(dian)(dian)壓(ya)(ya)(ya)與電(dian)(dian)(dian)阻(zu)(zu)的(de)(de)(de)(de)關(guan)系(xi)如下：

ΔL=FLES---(1)

其中：L——壓敏電(dian)阻的原(yuan)始厚度；

S——壓敏電阻的橫截面面積；

F——作用于壓敏(min)電阻上的(de)集中載荷(he)；

E——壓敏(min)電阻(zu)的彈性模量；

ΔL——壓敏電阻油墨厚度的改(gai)變量。

R=ρLS---(2)

其中：L——壓敏電阻油墨的厚度；

S——壓敏電阻油墨的橫截面面積(ji)；

ρ——壓敏電阻(zu)油墨(mo)的電阻(zu)率；

R——壓敏電(dian)阻油墨的電(dian)阻值。

                U＝IR        (3)

其(qi)中(zhong)：I——流經壓(ya)敏電(dian)阻(zu)的電(dian)流值；

R——壓敏電阻(zu)油(you)墨(mo)的電阻(zu)值；

U——壓(ya)敏(min)電阻油墨的電壓(ya)值；

如圖4所(suo)示，絲網印刷單(dan)點力片(pian)式傳(chuan)感(gan)器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)為只受(shou)到(dao)軸向壓(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)變(bian)(bian)(bian)(bian)形而引(yin)起(qi)了(le)(le)其(qi)(qi)阻(zu)(zu)(zu)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)，因(yin)此在測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)可(ke)(ke)以被當作(zuo)電(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)可(ke)(ke)變(bian)(bian)(bian)(bian)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)對待(dai)；同(tong)時又由于壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)引(yin)起(qi)了(le)(le)加在壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)兩(liang)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)，因(yin)此壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)可(ke)(ke)以被當作(zuo)檢測(ce)(ce)電(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)入(ru)變(bian)(bian)(bian)(bian)量(liang)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)。由于單(dan)點力傳(chuan)感(gan)器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)因(yin)外(wai)(wai)(wai)力作(zuo)用(yong)(yong)而引(yin)起(qi)了(le)(le)加在其(qi)(qi)兩(liang)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)，反相(xiang)(xiang)比(bi)(bi)例(li)(li)放(fang)(fang)(fang)(fang)(fang)大(da)電(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)入(ru)端(duan)(duan)(duan)恰(qia)好是壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)端(duan)(duan)(duan)；因(yin)此壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)端(duan)(duan)(duan)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)必然引(yin)起(qi)了(le)(le)反相(xiang)(xiang)比(bi)(bi)例(li)(li)放(fang)(fang)(fang)(fang)(fang)大(da)電(dian)(dian)(dian)(dian)路(lu)(lu)I輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)，也(ye)就是說(shuo)單(dan)點力傳(chuan)感(gan)器(qi)(qi)受(shou)外(wai)(wai)(wai)力作(zuo)用(yong)(yong)是可(ke)(ke)以引(yin)起(qi)測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)相(xiang)(xiang)應(ying)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)的(de)(de)(de)(de)(de)(de)(de)(de)。當外(wai)(wai)(wai)力作(zuo)用(yong)(yong)于單(dan)點力傳(chuan)感(gan)器(qi)(qi)后(hou)(hou)(hou)由于壓(ya)(ya)(ya)(ya)(ya)(ya)敏(min)(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)(bian)(bian)而產生(sheng)了(le)(le)一定的(de)(de)(de)(de)(de)(de)(de)(de)微弱(ruo)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)，通(tong)(tong)過反相(xiang)(xiang)比(bi)(bi)例(li)(li)放(fang)(fang)(fang)(fang)(fang)大(da)器(qi)(qi)I將該(gai)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)放(fang)(fang)(fang)(fang)(fang)大(da)；然后(hou)(hou)(hou)再通(tong)(tong)過低(di)通(tong)(tong)濾(lv)波器(qi)(qi)將其(qi)(qi)他高頻干擾(rao)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)過濾(lv)或(huo)者去除(chu)；接著再通(tong)(tong)過反相(xiang)(xiang)比(bi)(bi)例(li)(li)放(fang)(fang)(fang)(fang)(fang)大(da)器(qi)(qi)II將電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)還原到(dao)最初的(de)(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)位(因(yin)為前后(hou)(hou)(hou)經(jing)過了(le)(le)兩(liang)次反相(xiang)(xiang)放(fang)(fang)(fang)(fang)(fang)大(da)，因(yin)此經(jing)過處(chu)理(li)(li)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)可(ke)(ke)以恢復到(dao)原來的(de)(de)(de)(de)(de)(de)(de)(de)正電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)值(zhi)(zhi)，同(tong)時將微弱(ruo)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)值(zhi)(zhi)放(fang)(fang)(fang)(fang)(fang)大(da)了(le)(le))；最后(hou)(hou)(hou)再通(tong)(tong)過A/D轉換器(qi)(qi)限壓(ya)(ya)(ya)(ya)(ya)(ya)轉換將外(wai)(wai)(wai)力引(yin)起(qi)的(de)(de)(de)(de)(de)(de)(de)(de)并經(jing)過處(chu)理(li)(li)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)轉換為計(ji)算機能識別的(de)(de)(de)(de)(de)(de)(de)(de)數字電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)，當然也(ye)可(ke)(ke)以直接將反相(xiang)(xiang)比(bi)(bi)例(li)(li)放(fang)(fang)(fang)(fang)(fang)大(da)器(qi)(qi)II處(chu)理(li)(li)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)直接輸(shu)入(ru)至(zhi)可(ke)(ke)以接收該(gai)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)(de)模(mo)擬顯(xian)示儀器(qi)(qi)或(huo)處(chu)理(li)(li)儀器(qi)(qi)例(li)(li)如模(mo)擬信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)示波顯(xian)示器(qi)(qi)或(huo)者模(mo)擬信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)處(chu)理(li)(li)電(dian)(dian)(dian)(dian)路(lu)(lu)板。