【烘手器電路】烘手機內部結構是什么 干手器電路板圖片

烘手器的工作(zuo)原(yuan)理(li)一般為傳感(gan)器檢(jian)測(ce)到信號(hao)(手(shou))，此(ci)信號(hao)看控制打開加(jia)熱電(dian)路繼(ji)(ji)電(dian)器及吹風(feng)電(dian)路繼(ji)(ji)電(dian)器，開始加(jia)熱、吹風(feng)。當(dang)傳感(gan)器檢(jian)測(ce)的信號(hao)消失時，釋放觸(chu)點，加(jia)熱電(dian)路及吹風(feng)電(dian)路繼(ji)(ji)電(dian)器斷開，停止加(jia)熱、吹風(feng)。那么(me)，烘手(shou)機內部結構是什么(me)？一起來看看烘手(shou)器電(dian)路說(shuo)明和干手(shou)器電(dian)路板圖(tu)片展示(shi)吧！

1、自動洗手器電路

自動洗手(shou)器的電(dian)路原(yuan)理(li)如圖一所示。

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220V 交流(liu)(liu)(liu)電(dian)(dian)路(lu)(lu)經(jing)(jing)變壓(ya)(ya)器(qi)(qi)T 降壓(ya)(ya)，變為(wei)(wei)(wei)(wei)低(di)壓(ya)(ya)交流(liu)(liu)(liu)電(dian)(dian)，經(jing)(jing)整流(liu)(liu)(liu)濾波(bo)，成為(wei)(wei)(wei)(wei)低(di)壓(ya)(ya)直流(liu)(liu)(liu)，再(zai)經(jing)(jing)三端(duan)集成穩(wen)壓(ya)(ya)電(dian)(dian)路(lu)(lu)7806穩(wen)壓(ya)(ya)，得(de)到(dao)6V直流(liu)(liu)(liu)電(dian)(dian)供給控制電(dian)(dian)路(lu)(lu)工(gong)作。H1為(wei)(wei)(wei)(wei)紅(hong)色發光二極管，作為(wei)(wei)(wei)(wei)電(dian)(dian)源指示。N2為(wei)(wei)(wei)(wei)紅(hong)外(wai)接收電(dian)(dian)路(lu)(lu)SFH506-38，N3為(wei)(wei)(wei)(wei)鎖相環音頻譯碼器(qi)(qi)LM567，N3與(yu)R3、C6組成振蕩器(qi)(qi)，R3、R6決(jue)定N3內部壓(ya)(ya)控振蕩器(qi)(qi)的(de)(de)中心頻率(lv)，LM567的(de)(de)3腳為(wei)(wei)(wei)(wei)信號輸(shu)(shu)入端(duan)，8腳為(wei)(wei)(wei)(wei)邏(luo)輯輸(shu)(shu)出(chu)端(duan)，其輸(shu)(shu)出(chu)端(duan)為(wei)(wei)(wei)(wei)OC門輸(shu)(shu)出(chu)，最大灌電(dian)(dian)流(liu)(liu)(liu)為(wei)(wei)(wei)(wei)100mA，LM567的(de)(de)工(gong)作電(dian)(dian)壓(ya)(ya)為(wei)(wei)(wei)(wei)4.75V～9V，工(gong)作頻率(lv)可(ke)從零點幾赫茲到(dao)500千赫，靜(jing)態工(gong)作電(dian)(dian)流(liu)(liu)(liu)為(wei)(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)(wei)NE555定時(shi)器(qi)(qi)，它(ta)與(yu)外(wai)圍元件組成單(dan)穩(wen)態定時(shi)電(dian)(dian)路(lu)(lu)，其目的(de)(de)是在人手偶爾(er)偏離了紅(hong)外(wai)線的(de)(de)探測范(fan)圍時(shi)，能保證洗手器(qi)(qi)的(de)(de)正(zheng)常出(chu)水(shui)。

LM567芯片(pian)5腳(jiao)輸出(chu)的(de)振蕩信號經三(san)極(ji)(ji)管功(gong)率放(fang)大后(hou)，推動紅外(wai)(wai)發(fa)(fa)(fa)射二極(ji)(ji)管VD向外(wai)(wai)發(fa)(fa)(fa)射紅外(wai)(wai)線(xian)。沒有人洗(xi)手(shou)(shou)時，紅外(wai)(wai)接(jie)收電(dian)(dian)路N2接(jie)收不到VD向外(wai)(wai)發(fa)(fa)(fa)射的(de)紅外(wai)(wai)線(xian)，N3的(de)3腳(jiao)無信號輸入(ru)(ru)，8腳(jiao)為高電(dian)(dian)平(ping)，N4 的(de)3 腳(jiao)為低(di)電(dian)(dian)平(ping)，三(san)極(ji)(ji)管截(jie)止(zhi)，繼電(dian)(dian)器(qi)(qi)K 斷電(dian)(dian)處(chu)于(yu)釋放(fang)狀(zhuang)態，電(dian)(dian)磁閥Y 不動作，洗(xi)手(shou)(shou)器(qi)(qi)無自(zi)來水放(fang)出(chu)。當人手(shou)(shou)放(fang)到洗(xi)手(shou)(shou)器(qi)(qi)下時，N2 接(jie)收到人手(shou)(shou)反(fan)射的(de)紅外(wai)(wai)線(xian)并經N2 放(fang)大后(hou)，輸入(ru)(ru)到N3的(de)3腳(jiao)，由(you)N3內部處(chu)理(li)后(hou)使(shi)N3的(de)8腳(jiao)輸出(chu)低(di)電(dian)(dian)平(ping)，從而(er)使(shi)N4的(de)低(di)觸(chu)發(fa)(fa)(fa)端(duan)2腳(jiao)變為低(di)電(dian)(dian)位(wei)，導(dao)致(zhi)N4 的(de)3 腳(jiao)輸出(chu)高電(dian)(dian)平(ping)，三(san)極(ji)(ji)管導(dao)通，繼電(dian)(dian)器(qi)(qi)J1 吸(xi)合(he)，使(shi)其常開觸(chu)點閉合(he)，接(jie)通電(dian)(dian)磁閥Y 的(de)220V 交(jiao)流(liu)電(dian)(dian)源(yuan)，Y 開始動作，使(shi)洗(xi)手(shou)(shou)器(qi)(qi)放(fang)出(chu)自(zi)來水，供人們洗(xi)滌之用，同時發(fa)(fa)(fa)光二極(ji)(ji)管LED2 發(fa)(fa)(fa)出(chu)綠(lv)光，指示(shi)洗(xi)手(shou)(shou)器(qi)(qi)正工(gong)作于(yu)放(fang)水狀(zhuang)態。洗(xi)滌完畢，人手(shou)(shou)離開洗(xi)手(shou)(shou)器(qi)(qi)后(hou)，N4 延時幾秒鐘后(hou)復位(wei)，使(shi)洗(xi)手(shou)(shou)器(qi)(qi)停(ting)止(zhi)放(fang)水。

圖1中(zhong)，變壓器T采(cai)用220V/9V小(xiao)型(xing)交流變壓器，VD為PH303紅外發射(she)二極管，VT1為8050三極管，VT2為9013三極管，J1采(cai)用JRX-13F、6V小(xiao)型(xing)直流繼電器，Y采(cai)用市(shi)售的220V交流電磁閥，其余(yu)元件型(xing)號(hao)與數(shu)據見圖1 中(zhong)所標參數(shu)。

2、自動干手器電路

自(zi)動干(gan)手器(qi)電路(lu)圖(tu)如圖(tu)二(er)所示，電路(lu)由紅(hong)(hong)外發(fa)射部(bu)分(fen)與紅(hong)(hong)外接收(shou)控(kong)制部(bu)分(fen)組成。

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紅(hong)外發射部分由555時(shi)基電路產生頻率為5kHz，占(zhan)空比為50％的方波信號，驅(qu)動紅(hong)外發射管發射紅(hong)外線。

在手置于干手器下部時(shi)(shi)(shi)，由(you)于手(shou)對(dui)紅(hong)外(wai)線的(de)(de)反射作(zuo)用，接收(shou)電(dian)(dian)(dian)路中的(de)(de)PH302將接收(shou)到的(de)(de)紅(hong)外(wai)線變成電(dian)(dian)(dian)信(xin)號(hao)(hao)，經IC1、IC2、IC3 組成的(de)(de)選頻(pin)放大(da)器，其輸(shu)出(chu)信(xin)號(hao)(hao)經放大(da)、整形、濾波變成直流信(xin)號(hao)(hao)進人比較器IC4。比較器的(de)(de)門限電(dian)(dian)(dian)壓為7V，設置較高(gao)，其目的(de)(de)是提高(gao)電(dian)(dian)(dian)路的(de)(de)抗干擾(rao)能力。當(dang)IC4 的(de)(de)輸(shu)人電(dian)(dian)(dian)平(ping)超過7V 時(shi)(shi)(shi)，其輸(shu)出(chu)變為低電(dian)(dian)(dian)平(ping)，觸發(fa)IC5 定(ding)時(shi)(shi)(shi)器開(kai)始定(ding)時(shi)(shi)(shi)，同時(shi)(shi)(shi)該(gai)定(ding)時(shi)(shi)(shi)器的(de)(de)3 腳變為高(gao)電(dian)(dian)(dian)平(ping)，使3DG130 導通，繼電(dian)(dian)(dian)器觸點吸合，接通電(dian)(dian)(dian)阻絲和風機(ji)。在定(ding)時(shi)(shi)(shi)器的(de)(de)2 腳設置了手(shou)動開(kai)關S1，可進行手(shou)動操作(zuo)，還可通過S2 選擇冷(leng)風或熱風。