【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(de)工作原理一般(ban)為(wei)傳(chuan)感器(qi)(qi)檢測(ce)到信(xin)號(手(shou))，此信(xin)號看控制打開(kai)加(jia)熱電路繼電器(qi)(qi)及吹風電路繼電器(qi)(qi)，開(kai)始加(jia)熱、吹風。當(dang)傳(chuan)感器(qi)(qi)檢測(ce)的(de)信(xin)號消失(shi)時，釋放觸點，加(jia)熱電路及吹風電路繼電器(qi)(qi)斷(duan)開(kai)，停止加(jia)熱、吹風。那(nei)么(me)，烘手(shou)機內部(bu)結構是(shi)什么(me)？一起來看看烘手(shou)器(qi)(qi)電路說明和(he)干手(shou)器(qi)(qi)電路板圖片(pian)展示吧(ba)！

1、自動洗手器電路

自動洗手器的電(dian)路原(yuan)理如(ru)圖一所示(shi)。

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220V 交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)路(lu)(lu)經(jing)變壓器(qi)T 降壓，變為(wei)(wei)(wei)低壓交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)，經(jing)整流(liu)(liu)(liu)(liu)濾波，成為(wei)(wei)(wei)低壓直流(liu)(liu)(liu)(liu)，再經(jing)三端(duan)集成穩(wen)壓電(dian)(dian)(dian)路(lu)(lu)7806穩(wen)壓，得到6V直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)供給控(kong)(kong)制電(dian)(dian)(dian)路(lu)(lu)工作。H1為(wei)(wei)(wei)紅(hong)(hong)色發光(guang)二極管，作為(wei)(wei)(wei)電(dian)(dian)(dian)源指示。N2為(wei)(wei)(wei)紅(hong)(hong)外接(jie)收電(dian)(dian)(dian)路(lu)(lu)SFH506-38，N3為(wei)(wei)(wei)鎖相環音頻(pin)譯碼器(qi)LM567，N3與R3、C6組成振蕩(dang)器(qi)，R3、R6決定N3內部壓控(kong)(kong)振蕩(dang)器(qi)的(de)中心頻(pin)率，LM567的(de)3腳為(wei)(wei)(wei)信號輸入(ru)端(duan)，8腳為(wei)(wei)(wei)邏輯輸出端(duan)，其輸出端(duan)為(wei)(wei)(wei)OC門輸出，最大灌電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)為(wei)(wei)(wei)100mA，LM567的(de)工作電(dian)(dian)(dian)壓為(wei)(wei)(wei)4.75V～9V，工作頻(pin)率可從零點幾(ji)赫(he)茲到500千赫(he)，靜態工作電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)為(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)NE555定時(shi)器(qi)，它與外圍元件(jian)組成單穩(wen)態定時(shi)電(dian)(dian)(dian)路(lu)(lu)，其目(mu)的(de)是在(zai)人手偶爾偏離了(le)紅(hong)(hong)外線的(de)探(tan)測范圍時(shi)，能保證洗(xi)手器(qi)的(de)正常出水。

LM567芯片(pian)5腳(jiao)輸出(chu)(chu)的(de)(de)振蕩(dang)信號經(jing)三極(ji)管(guan)(guan)(guan)功率放(fang)(fang)(fang)大后，推(tui)動紅(hong)外(wai)(wai)發(fa)射二極(ji)管(guan)(guan)(guan)VD向外(wai)(wai)發(fa)射紅(hong)外(wai)(wai)線(xian)。沒有人(ren)洗(xi)(xi)手(shou)(shou)時(shi)，紅(hong)外(wai)(wai)接收電(dian)路N2接收不(bu)(bu)到(dao)VD向外(wai)(wai)發(fa)射的(de)(de)紅(hong)外(wai)(wai)線(xian)，N3的(de)(de)3腳(jiao)無(wu)(wu)信號輸入(ru)，8腳(jiao)為(wei)高電(dian)平，N4 的(de)(de)3 腳(jiao)為(wei)低(di)電(dian)平，三極(ji)管(guan)(guan)(guan)截(jie)止(zhi)，繼電(dian)器(qi)(qi)(qi)K 斷(duan)電(dian)處(chu)(chu)于(yu)釋(shi)放(fang)(fang)(fang)狀態，電(dian)磁閥(fa)Y 不(bu)(bu)動作(zuo)(zuo)，洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)無(wu)(wu)自(zi)來水放(fang)(fang)(fang)出(chu)(chu)。當(dang)人(ren)手(shou)(shou)放(fang)(fang)(fang)到(dao)洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)下(xia)時(shi)，N2 接收到(dao)人(ren)手(shou)(shou)反射的(de)(de)紅(hong)外(wai)(wai)線(xian)并經(jing)N2 放(fang)(fang)(fang)大后，輸入(ru)到(dao)N3的(de)(de)3腳(jiao)，由N3內部處(chu)(chu)理后使N3的(de)(de)8腳(jiao)輸出(chu)(chu)低(di)電(dian)平，從而(er)使N4的(de)(de)低(di)觸發(fa)端(duan)2腳(jiao)變為(wei)低(di)電(dian)位(wei)，導致(zhi)N4 的(de)(de)3 腳(jiao)輸出(chu)(chu)高電(dian)平，三極(ji)管(guan)(guan)(guan)導通，繼電(dian)器(qi)(qi)(qi)J1 吸合，使其常開觸點閉(bi)合，接通電(dian)磁閥(fa)Y 的(de)(de)220V 交(jiao)流電(dian)源，Y 開始動作(zuo)(zuo)，使洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)放(fang)(fang)(fang)出(chu)(chu)自(zi)來水，供人(ren)們洗(xi)(xi)滌之用，同時(shi)發(fa)光(guang)二極(ji)管(guan)(guan)(guan)LED2 發(fa)出(chu)(chu)綠光(guang)，指(zhi)示(shi)洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)正(zheng)工作(zuo)(zuo)于(yu)放(fang)(fang)(fang)水狀態。洗(xi)(xi)滌完畢，人(ren)手(shou)(shou)離開洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)后，N4 延時(shi)幾秒鐘后復位(wei)，使洗(xi)(xi)手(shou)(shou)器(qi)(qi)(qi)停止(zhi)放(fang)(fang)(fang)水。

圖(tu)1中，變(bian)壓器(qi)(qi)T采(cai)用(yong)220V/9V小(xiao)型交(jiao)流(liu)變(bian)壓器(qi)(qi)，VD為PH303紅外發射二極管，VT1為8050三極管，VT2為9013三極管，J1采(cai)用(yong)JRX-13F、6V小(xiao)型直流(liu)繼電(dian)(dian)器(qi)(qi)，Y采(cai)用(yong)市售的220V交(jiao)流(liu)電(dian)(dian)磁閥(fa)，其余元(yuan)件(jian)型號(hao)與數(shu)據見圖(tu)1 中所標參數(shu)。

2、自動干手器電路

自動干手器電(dian)路(lu)圖如(ru)圖二(er)所示，電(dian)路(lu)由紅(hong)外發(fa)射部分(fen)與(yu)紅(hong)外接(jie)收控制部分(fen)組成。

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紅(hong)外(wai)發射部分由555時基電路產生頻率為5kHz，占(zhan)空比為50％的方波信號，驅動(dong)紅(hong)外(wai)發射管發射紅(hong)外(wai)線(xian)。

在手置于干手器下部時，由于手對紅外線的(de)(de)(de)(de)(de)(de)(de)反射作(zuo)用，接(jie)收電(dian)(dian)(dian)路(lu)中(zhong)的(de)(de)(de)(de)(de)(de)(de)PH302將接(jie)收到的(de)(de)(de)(de)(de)(de)(de)紅外線變(bian)成(cheng)電(dian)(dian)(dian)信(xin)號，經(jing)IC1、IC2、IC3 組(zu)成(cheng)的(de)(de)(de)(de)(de)(de)(de)選頻放大器(qi)，其(qi)輸(shu)出(chu)信(xin)號經(jing)放大、整形、濾(lv)波變(bian)成(cheng)直流信(xin)號進人(ren)比較器(qi)IC4。比較器(qi)的(de)(de)(de)(de)(de)(de)(de)門限電(dian)(dian)(dian)壓(ya)為(wei)7V，設置較高，其(qi)目的(de)(de)(de)(de)(de)(de)(de)是提高電(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)(de)抗干擾能力。當IC4 的(de)(de)(de)(de)(de)(de)(de)輸(shu)人(ren)電(dian)(dian)(dian)平(ping)(ping)超過(guo)7V 時，其(qi)輸(shu)出(chu)變(bian)為(wei)低電(dian)(dian)(dian)平(ping)(ping)，觸發IC5 定(ding)時器(qi)開始定(ding)時，同時該定(ding)時器(qi)的(de)(de)(de)(de)(de)(de)(de)3 腳(jiao)變(bian)為(wei)高電(dian)(dian)(dian)平(ping)(ping)，使3DG130 導(dao)通(tong)，繼電(dian)(dian)(dian)器(qi)觸點吸(xi)合，接(jie)通(tong)電(dian)(dian)(dian)阻絲和風機。在(zai)定(ding)時器(qi)的(de)(de)(de)(de)(de)(de)(de)2 腳(jiao)設置了手動開關S1，可進行手動操作(zuo)，還可通(tong)過(guo)S2 選擇冷風或(huo)熱風。