【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(gong)作原理一般為傳感(gan)器(qi)(qi)檢(jian)測(ce)到信號(手(shou))，此信號看(kan)控制(zhi)打(da)開(kai)加(jia)(jia)熱電(dian)(dian)路(lu)(lu)繼(ji)電(dian)(dian)器(qi)(qi)及吹(chui)(chui)風(feng)電(dian)(dian)路(lu)(lu)繼(ji)電(dian)(dian)器(qi)(qi)，開(kai)始加(jia)(jia)熱、吹(chui)(chui)風(feng)。當傳感(gan)器(qi)(qi)檢(jian)測(ce)的(de)信號消失時，釋(shi)放觸點(dian)，加(jia)(jia)熱電(dian)(dian)路(lu)(lu)及吹(chui)(chui)風(feng)電(dian)(dian)路(lu)(lu)繼(ji)電(dian)(dian)器(qi)(qi)斷開(kai)，停止加(jia)(jia)熱、吹(chui)(chui)風(feng)。那么，烘(hong)手(shou)機內部(bu)結(jie)構是什么？一起來看(kan)看(kan)烘(hong)手(shou)器(qi)(qi)電(dian)(dian)路(lu)(lu)說明和干手(shou)器(qi)(qi)電(dian)(dian)路(lu)(lu)板圖片展示吧！

1、自動洗手器電路

自動洗手器的電(dian)路原理(li)如圖一所示。

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220V 交(jiao)流(liu)電(dian)(dian)路(lu)經變壓器(qi)T 降(jiang)壓，變為(wei)(wei)(wei)(wei)(wei)(wei)低(di)壓交(jiao)流(liu)電(dian)(dian)，經整流(liu)濾波，成(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)低(di)壓直流(liu)，再經三端集成(cheng)穩壓電(dian)(dian)路(lu)7806穩壓，得到(dao)6V直流(liu)電(dian)(dian)供給控(kong)制電(dian)(dian)路(lu)工(gong)作。H1為(wei)(wei)(wei)(wei)(wei)(wei)紅(hong)色發光二極(ji)管，作為(wei)(wei)(wei)(wei)(wei)(wei)電(dian)(dian)源指示。N2為(wei)(wei)(wei)(wei)(wei)(wei)紅(hong)外接收電(dian)(dian)路(lu)SFH506-38，N3為(wei)(wei)(wei)(wei)(wei)(wei)鎖相(xiang)環音頻(pin)(pin)譯碼器(qi)LM567，N3與R3、C6組成(cheng)振蕩器(qi)，R3、R6決定N3內(nei)部(bu)壓控(kong)振蕩器(qi)的(de)中心(xin)頻(pin)(pin)率，LM567的(de)3腳為(wei)(wei)(wei)(wei)(wei)(wei)信號輸入端，8腳為(wei)(wei)(wei)(wei)(wei)(wei)邏輯輸出端，其(qi)(qi)輸出端為(wei)(wei)(wei)(wei)(wei)(wei)OC門(men)輸出，最(zui)大(da)灌電(dian)(dian)流(liu)為(wei)(wei)(wei)(wei)(wei)(wei)100mA，LM567的(de)工(gong)作電(dian)(dian)壓為(wei)(wei)(wei)(wei)(wei)(wei)4.75V～9V，工(gong)作頻(pin)(pin)率可從零(ling)點幾(ji)赫(he)茲到(dao)500千赫(he)，靜(jing)態工(gong)作電(dian)(dian)流(liu)為(wei)(wei)(wei)(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)(wei)(wei)(wei)NE555定時器(qi)，它(ta)與外圍元(yuan)件組成(cheng)單穩態定時電(dian)(dian)路(lu)，其(qi)(qi)目的(de)是在人手偶爾偏離了(le)紅(hong)外線的(de)探(tan)測范圍時，能保證(zheng)洗(xi)手器(qi)的(de)正常出水。

LM567芯片5腳(jiao)(jiao)輸(shu)(shu)(shu)出(chu)(chu)(chu)的(de)(de)振蕩信號(hao)經三極管(guan)功(gong)率放(fang)(fang)(fang)大后(hou)，推動(dong)(dong)紅外(wai)(wai)(wai)發射(she)二極管(guan)VD向外(wai)(wai)(wai)發射(she)紅外(wai)(wai)(wai)線。沒有人洗(xi)(xi)(xi)手(shou)(shou)(shou)時(shi)，紅外(wai)(wai)(wai)接收電(dian)(dian)(dian)(dian)路N2接收不(bu)(bu)到(dao)VD向外(wai)(wai)(wai)發射(she)的(de)(de)紅外(wai)(wai)(wai)線，N3的(de)(de)3腳(jiao)(jiao)無信號(hao)輸(shu)(shu)(shu)入，8腳(jiao)(jiao)為(wei)高電(dian)(dian)(dian)(dian)平(ping)，N4 的(de)(de)3 腳(jiao)(jiao)為(wei)低電(dian)(dian)(dian)(dian)平(ping)，三極管(guan)截止(zhi)，繼電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)K 斷(duan)電(dian)(dian)(dian)(dian)處于釋放(fang)(fang)(fang)狀態，電(dian)(dian)(dian)(dian)磁(ci)(ci)閥Y 不(bu)(bu)動(dong)(dong)作，洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)無自來水(shui)放(fang)(fang)(fang)出(chu)(chu)(chu)。當人手(shou)(shou)(shou)放(fang)(fang)(fang)到(dao)洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)下(xia)時(shi)，N2 接收到(dao)人手(shou)(shou)(shou)反射(she)的(de)(de)紅外(wai)(wai)(wai)線并經N2 放(fang)(fang)(fang)大后(hou)，輸(shu)(shu)(shu)入到(dao)N3的(de)(de)3腳(jiao)(jiao)，由N3內(nei)部處理后(hou)使(shi)N3的(de)(de)8腳(jiao)(jiao)輸(shu)(shu)(shu)出(chu)(chu)(chu)低電(dian)(dian)(dian)(dian)平(ping)，從而使(shi)N4的(de)(de)低觸發端2腳(jiao)(jiao)變為(wei)低電(dian)(dian)(dian)(dian)位(wei)，導(dao)致N4 的(de)(de)3 腳(jiao)(jiao)輸(shu)(shu)(shu)出(chu)(chu)(chu)高電(dian)(dian)(dian)(dian)平(ping)，三極管(guan)導(dao)通，繼電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)J1 吸(xi)合(he)，使(shi)其常開(kai)(kai)觸點閉合(he)，接通電(dian)(dian)(dian)(dian)磁(ci)(ci)閥Y 的(de)(de)220V 交流電(dian)(dian)(dian)(dian)源，Y 開(kai)(kai)始(shi)動(dong)(dong)作，使(shi)洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)放(fang)(fang)(fang)出(chu)(chu)(chu)自來水(shui)，供人們(men)洗(xi)(xi)(xi)滌之用，同時(shi)發光(guang)二極管(guan)LED2 發出(chu)(chu)(chu)綠光(guang)，指示(shi)洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)正工作于放(fang)(fang)(fang)水(shui)狀態。洗(xi)(xi)(xi)滌完畢，人手(shou)(shou)(shou)離開(kai)(kai)洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)后(hou)，N4 延時(shi)幾秒鐘后(hou)復位(wei)，使(shi)洗(xi)(xi)(xi)手(shou)(shou)(shou)器(qi)(qi)(qi)(qi)停止(zhi)放(fang)(fang)(fang)水(shui)。

圖1中，變(bian)壓器(qi)T采(cai)用(yong)(yong)220V/9V小型交流變(bian)壓器(qi)，VD為(wei)PH303紅(hong)外發射二極(ji)(ji)管(guan)，VT1為(wei)8050三極(ji)(ji)管(guan)，VT2為(wei)9013三極(ji)(ji)管(guan)，J1采(cai)用(yong)(yong)JRX-13F、6V小型直流繼電(dian)器(qi)，Y采(cai)用(yong)(yong)市售的(de)220V交流電(dian)磁閥，其余元(yuan)件型號與(yu)數據見圖1 中所標參數。

2、自動干手器電路

自動干手器電路圖如圖二所(suo)示，電路由紅(hong)外(wai)(wai)發(fa)射部分與紅(hong)外(wai)(wai)接(jie)收控制部分組成(cheng)。

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紅外發(fa)(fa)射部分由(you)555時基電(dian)路產生(sheng)頻(pin)率為5kHz，占空比(bi)為50％的方(fang)波(bo)信號，驅動紅外發(fa)(fa)射管(guan)發(fa)(fa)射紅外線。

在手置于干手器下部時(shi)(shi)，由(you)于(yu)手對紅(hong)外線(xian)的(de)(de)反射作用，接收電(dian)路(lu)中的(de)(de)PH302將(jiang)接收到的(de)(de)紅(hong)外線(xian)變(bian)成(cheng)(cheng)電(dian)信(xin)號，經(jing)IC1、IC2、IC3 組成(cheng)(cheng)的(de)(de)選頻放大器(qi)，其(qi)輸出(chu)信(xin)號經(jing)放大、整形、濾波變(bian)成(cheng)(cheng)直流信(xin)號進人比較(jiao)器(qi)IC4。比較(jiao)器(qi)的(de)(de)門限電(dian)壓為7V，設置較(jiao)高，其(qi)目的(de)(de)是提高電(dian)路(lu)的(de)(de)抗干擾能力。當IC4 的(de)(de)輸人電(dian)平(ping)超過7V 時(shi)(shi)，其(qi)輸出(chu)變(bian)為低電(dian)平(ping)，觸發(fa)IC5 定(ding)時(shi)(shi)器(qi)開始定(ding)時(shi)(shi)，同時(shi)(shi)該定(ding)時(shi)(shi)器(qi)的(de)(de)3 腳變(bian)為高電(dian)平(ping)，使3DG130 導通，繼電(dian)器(qi)觸點吸(xi)合，接通電(dian)阻(zu)絲和風(feng)機。在定(ding)時(shi)(shi)器(qi)的(de)(de)2 腳設置了手動開關S1，可進行手動操(cao)作，還(huan)可通過S2 選擇冷(leng)風(feng)或(huo)熱風(feng)。