【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)為傳感器(qi)(qi)檢(jian)測(ce)到信號(hao)(手(shou))，此信號(hao)看控(kong)制打開加熱(re)(re)電(dian)(dian)(dian)路(lu)(lu)繼電(dian)(dian)(dian)器(qi)(qi)及吹風電(dian)(dian)(dian)路(lu)(lu)繼電(dian)(dian)(dian)器(qi)(qi)，開始加熱(re)(re)、吹風。當傳感器(qi)(qi)檢(jian)測(ce)的(de)信號(hao)消失時，釋放觸點，加熱(re)(re)電(dian)(dian)(dian)路(lu)(lu)及吹風電(dian)(dian)(dian)路(lu)(lu)繼電(dian)(dian)(dian)器(qi)(qi)斷開，停止加熱(re)(re)、吹風。那么(me)，烘手(shou)機內部結構(gou)是(shi)什么(me)？一起來看看烘手(shou)器(qi)(qi)電(dian)(dian)(dian)路(lu)(lu)說明和干手(shou)器(qi)(qi)電(dian)(dian)(dian)路(lu)(lu)板圖片展(zhan)示吧！

1、自動洗手器電路

自動洗手器的電路原理(li)如圖一所示(shi)。

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220V 交(jiao)(jiao)流(liu)(liu)電(dian)(dian)路經變壓(ya)(ya)(ya)器(qi)(qi)(qi)T 降壓(ya)(ya)(ya)，變為(wei)(wei)(wei)低壓(ya)(ya)(ya)交(jiao)(jiao)流(liu)(liu)電(dian)(dian)，經整(zheng)流(liu)(liu)濾(lv)波，成(cheng)(cheng)為(wei)(wei)(wei)低壓(ya)(ya)(ya)直流(liu)(liu)，再經三端(duan)集(ji)成(cheng)(cheng)穩壓(ya)(ya)(ya)電(dian)(dian)路7806穩壓(ya)(ya)(ya)，得到(dao)6V直流(liu)(liu)電(dian)(dian)供給控制電(dian)(dian)路工作。H1為(wei)(wei)(wei)紅(hong)色發光二(er)極管，作為(wei)(wei)(wei)電(dian)(dian)源指示。N2為(wei)(wei)(wei)紅(hong)外接收電(dian)(dian)路SFH506-38，N3為(wei)(wei)(wei)鎖相環音頻譯碼器(qi)(qi)(qi)LM567，N3與(yu)R3、C6組成(cheng)(cheng)振蕩(dang)器(qi)(qi)(qi)，R3、R6決定(ding)N3內部壓(ya)(ya)(ya)控振蕩(dang)器(qi)(qi)(qi)的(de)(de)(de)中(zhong)心頻率，LM567的(de)(de)(de)3腳為(wei)(wei)(wei)信號輸(shu)入(ru)端(duan)，8腳為(wei)(wei)(wei)邏(luo)輯輸(shu)出(chu)(chu)端(duan)，其輸(shu)出(chu)(chu)端(duan)為(wei)(wei)(wei)OC門(men)輸(shu)出(chu)(chu)，最(zui)大灌電(dian)(dian)流(liu)(liu)為(wei)(wei)(wei)100mA，LM567的(de)(de)(de)工作電(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)(wei)4.75V～9V，工作頻率可從零點幾赫茲到(dao)500千赫，靜態(tai)工作電(dian)(dian)流(liu)(liu)為(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)NE555定(ding)時器(qi)(qi)(qi)，它與(yu)外圍(wei)元件組成(cheng)(cheng)單穩態(tai)定(ding)時電(dian)(dian)路，其目的(de)(de)(de)是在人手(shou)偶爾偏離了紅(hong)外線的(de)(de)(de)探測范圍(wei)時，能(neng)保(bao)證洗手(shou)器(qi)(qi)(qi)的(de)(de)(de)正常出(chu)(chu)水。

LM567芯片(pian)5腳輸出(chu)的(de)振蕩信號(hao)經(jing)三(san)(san)極(ji)管(guan)(guan)功率放大后(hou)，推動紅(hong)(hong)外(wai)發射(she)二極(ji)管(guan)(guan)VD向(xiang)外(wai)發射(she)紅(hong)(hong)外(wai)線。沒有(you)人(ren)洗(xi)手(shou)(shou)時(shi)(shi)，紅(hong)(hong)外(wai)接收(shou)電(dian)(dian)路(lu)N2接收(shou)不(bu)到(dao)VD向(xiang)外(wai)發射(she)的(de)紅(hong)(hong)外(wai)線，N3的(de)3腳無(wu)信號(hao)輸入(ru)，8腳為高電(dian)(dian)平，N4 的(de)3 腳為低(di)(di)電(dian)(dian)平，三(san)(san)極(ji)管(guan)(guan)截止(zhi)，繼電(dian)(dian)器K 斷電(dian)(dian)處(chu)于(yu)釋放狀態，電(dian)(dian)磁閥Y 不(bu)動作(zuo)，洗(xi)手(shou)(shou)器無(wu)自來水放出(chu)。當(dang)人(ren)手(shou)(shou)放到(dao)洗(xi)手(shou)(shou)器下(xia)時(shi)(shi)，N2 接收(shou)到(dao)人(ren)手(shou)(shou)反(fan)射(she)的(de)紅(hong)(hong)外(wai)線并經(jing)N2 放大后(hou)，輸入(ru)到(dao)N3的(de)3腳，由(you)N3內部處(chu)理后(hou)使(shi)N3的(de)8腳輸出(chu)低(di)(di)電(dian)(dian)平，從而使(shi)N4的(de)低(di)(di)觸(chu)發端2腳變為低(di)(di)電(dian)(dian)位，導致N4 的(de)3 腳輸出(chu)高電(dian)(dian)平，三(san)(san)極(ji)管(guan)(guan)導通(tong)，繼電(dian)(dian)器J1 吸(xi)合，使(shi)其常開觸(chu)點閉(bi)合，接通(tong)電(dian)(dian)磁閥Y 的(de)220V 交流(liu)電(dian)(dian)源，Y 開始動作(zuo)，使(shi)洗(xi)手(shou)(shou)器放出(chu)自來水，供人(ren)們洗(xi)滌之用，同時(shi)(shi)發光(guang)(guang)二極(ji)管(guan)(guan)LED2 發出(chu)綠光(guang)(guang)，指(zhi)示洗(xi)手(shou)(shou)器正工作(zuo)于(yu)放水狀態。洗(xi)滌完畢，人(ren)手(shou)(shou)離開洗(xi)手(shou)(shou)器后(hou)，N4 延時(shi)(shi)幾(ji)秒鐘后(hou)復(fu)位，使(shi)洗(xi)手(shou)(shou)器停止(zhi)放水。

圖(tu)1中，變(bian)壓(ya)器(qi)T采(cai)(cai)用(yong)220V/9V小型(xing)(xing)交流(liu)(liu)變(bian)壓(ya)器(qi)，VD為PH303紅外發射二極(ji)管，VT1為8050三極(ji)管，VT2為9013三極(ji)管，J1采(cai)(cai)用(yong)JRX-13F、6V小型(xing)(xing)直流(liu)(liu)繼電(dian)器(qi)，Y采(cai)(cai)用(yong)市售的220V交流(liu)(liu)電(dian)磁閥，其余元件型(xing)(xing)號與數(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(qi)電路(lu)圖(tu)如圖(tu)二所示(shi)，電路(lu)由紅外發射部(bu)分與紅外接收控制部(bu)分組成(cheng)。

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紅(hong)外發射(she)(she)部分由555時基電(dian)路產生頻率為5kHz，占空比為50％的方波信號，驅動(dong)紅(hong)外發射(she)(she)管發射(she)(she)紅(hong)外線。

在手置于干手器下(xia)部時(shi)，由于(yu)手對紅外線的(de)反(fan)射作(zuo)用，接收(shou)電(dian)(dian)路中的(de)PH302將接收(shou)到(dao)的(de)紅外線變成(cheng)電(dian)(dian)信號，經IC1、IC2、IC3 組成(cheng)的(de)選頻放大器(qi)，其輸(shu)出信號經放大、整(zheng)形(xing)、濾波變成(cheng)直流信號進人比較(jiao)器(qi)IC4。比較(jiao)器(qi)的(de)門限(xian)電(dian)(dian)壓為7V，設(she)(she)置較(jiao)高，其目的(de)是提高電(dian)(dian)路的(de)抗干擾能力。當IC4 的(de)輸(shu)人電(dian)(dian)平(ping)超過7V 時(shi)，其輸(shu)出變為低電(dian)(dian)平(ping)，觸(chu)發IC5 定(ding)(ding)時(shi)器(qi)開(kai)始定(ding)(ding)時(shi)，同時(shi)該定(ding)(ding)時(shi)器(qi)的(de)3 腳(jiao)變為高電(dian)(dian)平(ping)，使3DG130 導(dao)通(tong)，繼電(dian)(dian)器(qi)觸(chu)點吸(xi)合(he)，接通(tong)電(dian)(dian)阻絲和(he)風(feng)機。在定(ding)(ding)時(shi)器(qi)的(de)2 腳(jiao)設(she)(she)置了手動開(kai)關S1，可進行手動操作(zuo)，還可通(tong)過S2 選擇冷風(feng)或(huo)熱風(feng)。