【烘手器電路】烘手機內部結構是什么 干手器電路板圖片

烘手器的工作原(yuan)理一般為傳感器(qi)(qi)(qi)(qi)檢測到信號(hao)(手(shou))，此信號(hao)看(kan)控制打(da)開加(jia)(jia)熱電(dian)(dian)(dian)路(lu)繼電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)及吹(chui)風電(dian)(dian)(dian)路(lu)繼電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)，開始加(jia)(jia)熱、吹(chui)風。當傳感器(qi)(qi)(qi)(qi)檢測的信號(hao)消失時，釋放觸點(dian)，加(jia)(jia)熱電(dian)(dian)(dian)路(lu)及吹(chui)風電(dian)(dian)(dian)路(lu)繼電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)斷開，停止(zhi)加(jia)(jia)熱、吹(chui)風。那(nei)么(me)，烘手(shou)機內部結構是什么(me)？一起來看(kan)看(kan)烘手(shou)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)路(lu)說明和干手(shou)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)路(lu)板圖(tu)片展示吧！

1、自動洗手器電路

自動洗手器的電路原理如(ru)圖一所示(shi)。

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220V 交(jiao)(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)路(lu)經變壓(ya)(ya)器T 降壓(ya)(ya)，變為(wei)低壓(ya)(ya)交(jiao)(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)，經整流(liu)(liu)濾(lv)波，成(cheng)為(wei)低壓(ya)(ya)直流(liu)(liu)，再經三(san)端集成(cheng)穩(wen)(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)路(lu)7806穩(wen)(wen)壓(ya)(ya)，得到6V直流(liu)(liu)電(dian)(dian)(dian)(dian)供(gong)給控制電(dian)(dian)(dian)(dian)路(lu)工作。H1為(wei)紅色發(fa)光二極管，作為(wei)電(dian)(dian)(dian)(dian)源指示。N2為(wei)紅外接收電(dian)(dian)(dian)(dian)路(lu)SFH506-38，N3為(wei)鎖相環音頻譯(yi)碼器LM567，N3與(yu)R3、C6組成(cheng)振蕩器，R3、R6決(jue)定N3內部壓(ya)(ya)控振蕩器的中心頻率，LM567的3腳為(wei)信號輸(shu)入端，8腳為(wei)邏輯(ji)輸(shu)出(chu)端，其(qi)(qi)輸(shu)出(chu)端為(wei)OC門輸(shu)出(chu)，最(zui)大灌電(dian)(dian)(dian)(dian)流(liu)(liu)為(wei)100mA，LM567的工作電(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)4.75V～9V，工作頻率可從零點(dian)幾赫茲到500千赫，靜態工作電(dian)(dian)(dian)(dian)流(liu)(liu)為(wei)8mA。N4為(wei)NE555定時器，它與(yu)外圍(wei)元件組成(cheng)單穩(wen)(wen)態定時電(dian)(dian)(dian)(dian)路(lu)，其(qi)(qi)目的是在(zai)人手偶爾(er)偏離了紅外線的探(tan)測(ce)范(fan)圍(wei)時，能保證洗手器的正常(chang)出(chu)水。

LM567芯片5腳(jiao)輸出(chu)(chu)的(de)振蕩信號(hao)經(jing)三極(ji)管(guan)(guan)功率放(fang)(fang)大后(hou)(hou)，推動(dong)(dong)紅外(wai)發(fa)(fa)(fa)射二極(ji)管(guan)(guan)VD向外(wai)發(fa)(fa)(fa)射紅外(wai)線(xian)。沒有人(ren)(ren)洗(xi)(xi)(xi)手(shou)(shou)時，紅外(wai)接收(shou)電(dian)(dian)路(lu)N2接收(shou)不到(dao)(dao)VD向外(wai)發(fa)(fa)(fa)射的(de)紅外(wai)線(xian)，N3的(de)3腳(jiao)無(wu)信號(hao)輸入，8腳(jiao)為(wei)高電(dian)(dian)平(ping)(ping)(ping)，N4 的(de)3 腳(jiao)為(wei)低(di)(di)(di)電(dian)(dian)平(ping)(ping)(ping)，三極(ji)管(guan)(guan)截(jie)止，繼電(dian)(dian)器(qi)(qi)K 斷電(dian)(dian)處(chu)于(yu)釋放(fang)(fang)狀(zhuang)(zhuang)態(tai)，電(dian)(dian)磁(ci)閥Y 不動(dong)(dong)作(zuo)，洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)無(wu)自來水放(fang)(fang)出(chu)(chu)。當人(ren)(ren)手(shou)(shou)放(fang)(fang)到(dao)(dao)洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)下時，N2 接收(shou)到(dao)(dao)人(ren)(ren)手(shou)(shou)反射的(de)紅外(wai)線(xian)并經(jing)N2 放(fang)(fang)大后(hou)(hou)，輸入到(dao)(dao)N3的(de)3腳(jiao)，由N3內部(bu)處(chu)理后(hou)(hou)使(shi)N3的(de)8腳(jiao)輸出(chu)(chu)低(di)(di)(di)電(dian)(dian)平(ping)(ping)(ping)，從而(er)使(shi)N4的(de)低(di)(di)(di)觸(chu)發(fa)(fa)(fa)端2腳(jiao)變(bian)為(wei)低(di)(di)(di)電(dian)(dian)位，導(dao)致N4 的(de)3 腳(jiao)輸出(chu)(chu)高電(dian)(dian)平(ping)(ping)(ping)，三極(ji)管(guan)(guan)導(dao)通(tong)，繼電(dian)(dian)器(qi)(qi)J1 吸合，使(shi)其(qi)常(chang)開(kai)(kai)觸(chu)點閉合，接通(tong)電(dian)(dian)磁(ci)閥Y 的(de)220V 交(jiao)流電(dian)(dian)源，Y 開(kai)(kai)始動(dong)(dong)作(zuo)，使(shi)洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)放(fang)(fang)出(chu)(chu)自來水，供人(ren)(ren)們洗(xi)(xi)(xi)滌之用，同(tong)時發(fa)(fa)(fa)光二極(ji)管(guan)(guan)LED2 發(fa)(fa)(fa)出(chu)(chu)綠光，指示(shi)洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)正工作(zuo)于(yu)放(fang)(fang)水狀(zhuang)(zhuang)態(tai)。洗(xi)(xi)(xi)滌完畢，人(ren)(ren)手(shou)(shou)離開(kai)(kai)洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)后(hou)(hou)，N4 延時幾(ji)秒鐘(zhong)后(hou)(hou)復位，使(shi)洗(xi)(xi)(xi)手(shou)(shou)器(qi)(qi)停止放(fang)(fang)水。

圖(tu)1中，變壓器(qi)T采(cai)用220V/9V小(xiao)型(xing)交流(liu)變壓器(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JRX-13F、6V小(xiao)型(xing)直流(liu)繼電器(qi)，Y采(cai)用市售的220V交流(liu)電磁閥，其余元件型(xing)號與數(shu)據見圖(tu)1 中所(suo)標參數(shu)。

2、自動干手器電路

自動干手器電路圖(tu)如圖(tu)二所示，電路由紅(hong)外發射部(bu)分與(yu)紅(hong)外接(jie)收控制部(bu)分組成。

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紅外(wai)(wai)發射部分由555時基電路產生(sheng)頻率為(wei)5kHz，占空比(bi)為(wei)50％的方波信號，驅動紅外(wai)(wai)發射管發射紅外(wai)(wai)線。

在手置于干手器下部時，由于手對紅(hong)外線的(de)(de)反射作用，接(jie)收電(dian)(dian)路(lu)中(zhong)的(de)(de)PH302將接(jie)收到的(de)(de)紅(hong)外線變(bian)(bian)成電(dian)(dian)信(xin)號，經IC1、IC2、IC3 組成的(de)(de)選(xuan)頻放(fang)大(da)器(qi)(qi)，其輸(shu)出信(xin)號經放(fang)大(da)、整(zheng)形、濾(lv)波變(bian)(bian)成直流信(xin)號進人比(bi)較(jiao)器(qi)(qi)IC4。比(bi)較(jiao)器(qi)(qi)的(de)(de)門限(xian)電(dian)(dian)壓為(wei)7V，設置(zhi)較(jiao)高(gao)，其目的(de)(de)是提(ti)高(gao)電(dian)(dian)路(lu)的(de)(de)抗干擾(rao)能(neng)力(li)。當IC4 的(de)(de)輸(shu)人電(dian)(dian)平(ping)超過7V 時，其輸(shu)出變(bian)(bian)為(wei)低電(dian)(dian)平(ping)，觸發IC5 定(ding)時器(qi)(qi)開始定(ding)時，同時該定(ding)時器(qi)(qi)的(de)(de)3 腳(jiao)變(bian)(bian)為(wei)高(gao)電(dian)(dian)平(ping)，使3DG130 導通，繼電(dian)(dian)器(qi)(qi)觸點吸合，接(jie)通電(dian)(dian)阻絲和風(feng)機。在定(ding)時器(qi)(qi)的(de)(de)2 腳(jiao)設置(zhi)了手動(dong)開關S1，可進行手動(dong)操作，還可通過S2 選(xuan)擇(ze)冷風(feng)或熱風(feng)。