【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)理一(yi)般為傳感器檢(jian)測到(dao)信(xin)號(hao)(hao)(手)，此信(xin)號(hao)(hao)看控(kong)制打開加(jia)熱(re)(re)電(dian)(dian)(dian)(dian)路繼(ji)電(dian)(dian)(dian)(dian)器及吹(chui)風電(dian)(dian)(dian)(dian)路繼(ji)電(dian)(dian)(dian)(dian)器，開始加(jia)熱(re)(re)、吹(chui)風。當傳感器檢(jian)測的信(xin)號(hao)(hao)消失時(shi)，釋(shi)放(fang)觸點，加(jia)熱(re)(re)電(dian)(dian)(dian)(dian)路及吹(chui)風電(dian)(dian)(dian)(dian)路繼(ji)電(dian)(dian)(dian)(dian)器斷開，停(ting)止加(jia)熱(re)(re)、吹(chui)風。那么(me)，烘手機內部(bu)結構是什么(me)？一(yi)起(qi)來看看烘手器電(dian)(dian)(dian)(dian)路說明和干手器電(dian)(dian)(dian)(dian)路板圖(tu)片展示吧！

1、自動洗手器電路

自(zi)動洗(xi)手器的電路原理如圖一(yi)所示。

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220V 交流(liu)(liu)(liu)電(dian)路(lu)經變壓(ya)器(qi)(qi)T 降壓(ya)，變為(wei)(wei)(wei)(wei)低(di)壓(ya)交流(liu)(liu)(liu)電(dian)，經整流(liu)(liu)(liu)濾波，成(cheng)(cheng)為(wei)(wei)(wei)(wei)低(di)壓(ya)直流(liu)(liu)(liu)，再經三端集成(cheng)(cheng)穩(wen)(wen)壓(ya)電(dian)路(lu)7806穩(wen)(wen)壓(ya)，得(de)到6V直流(liu)(liu)(liu)電(dian)供給(gei)控制電(dian)路(lu)工(gong)(gong)作(zuo)。H1為(wei)(wei)(wei)(wei)紅(hong)(hong)色發光二極管，作(zuo)為(wei)(wei)(wei)(wei)電(dian)源指示。N2為(wei)(wei)(wei)(wei)紅(hong)(hong)外接收電(dian)路(lu)SFH506-38，N3為(wei)(wei)(wei)(wei)鎖相環(huan)音頻譯碼器(qi)(qi)LM567，N3與(yu)R3、C6組成(cheng)(cheng)振蕩器(qi)(qi)，R3、R6決定N3內部壓(ya)控振蕩器(qi)(qi)的(de)(de)中心頻率，LM567的(de)(de)3腳(jiao)為(wei)(wei)(wei)(wei)信號(hao)輸入端，8腳(jiao)為(wei)(wei)(wei)(wei)邏輯(ji)輸出(chu)(chu)端，其輸出(chu)(chu)端為(wei)(wei)(wei)(wei)OC門輸出(chu)(chu)，最大灌(guan)電(dian)流(liu)(liu)(liu)為(wei)(wei)(wei)(wei)100mA，LM567的(de)(de)工(gong)(gong)作(zuo)電(dian)壓(ya)為(wei)(wei)(wei)(wei)4.75V～9V，工(gong)(gong)作(zuo)頻率可從零(ling)點幾赫茲到500千赫，靜(jing)態工(gong)(gong)作(zuo)電(dian)流(liu)(liu)(liu)為(wei)(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)(wei)NE555定時器(qi)(qi)，它(ta)與(yu)外圍元件組成(cheng)(cheng)單穩(wen)(wen)態定時電(dian)路(lu)，其目的(de)(de)是在人手(shou)(shou)偶爾偏離了紅(hong)(hong)外線(xian)的(de)(de)探測范圍時，能保證洗手(shou)(shou)器(qi)(qi)的(de)(de)正常出(chu)(chu)水。

LM567芯(xin)片5腳(jiao)輸(shu)(shu)出(chu)的(de)(de)(de)振蕩信號經三(san)(san)極(ji)(ji)管(guan)功率放(fang)(fang)大(da)后(hou)(hou)，推動紅(hong)(hong)外(wai)發(fa)射(she)二極(ji)(ji)管(guan)VD向(xiang)外(wai)發(fa)射(she)紅(hong)(hong)外(wai)線(xian)。沒有人洗(xi)手(shou)時(shi)，紅(hong)(hong)外(wai)接收(shou)電(dian)(dian)(dian)(dian)路N2接收(shou)不(bu)到(dao)VD向(xiang)外(wai)發(fa)射(she)的(de)(de)(de)紅(hong)(hong)外(wai)線(xian)，N3的(de)(de)(de)3腳(jiao)無信號輸(shu)(shu)入，8腳(jiao)為高電(dian)(dian)(dian)(dian)平(ping)，N4 的(de)(de)(de)3 腳(jiao)為低(di)(di)電(dian)(dian)(dian)(dian)平(ping)，三(san)(san)極(ji)(ji)管(guan)截止，繼(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)K 斷電(dian)(dian)(dian)(dian)處于釋(shi)放(fang)(fang)狀態，電(dian)(dian)(dian)(dian)磁閥Y 不(bu)動作(zuo)，洗(xi)手(shou)器(qi)(qi)無自來水放(fang)(fang)出(chu)。當人手(shou)放(fang)(fang)到(dao)洗(xi)手(shou)器(qi)(qi)下時(shi)，N2 接收(shou)到(dao)人手(shou)反射(she)的(de)(de)(de)紅(hong)(hong)外(wai)線(xian)并經N2 放(fang)(fang)大(da)后(hou)(hou)，輸(shu)(shu)入到(dao)N3的(de)(de)(de)3腳(jiao)，由(you)N3內部(bu)處理后(hou)(hou)使(shi)N3的(de)(de)(de)8腳(jiao)輸(shu)(shu)出(chu)低(di)(di)電(dian)(dian)(dian)(dian)平(ping)，從而使(shi)N4的(de)(de)(de)低(di)(di)觸(chu)發(fa)端2腳(jiao)變為低(di)(di)電(dian)(dian)(dian)(dian)位，導(dao)致N4 的(de)(de)(de)3 腳(jiao)輸(shu)(shu)出(chu)高電(dian)(dian)(dian)(dian)平(ping)，三(san)(san)極(ji)(ji)管(guan)導(dao)通(tong)(tong)，繼(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)J1 吸(xi)合(he)，使(shi)其常開(kai)觸(chu)點(dian)閉合(he)，接通(tong)(tong)電(dian)(dian)(dian)(dian)磁閥Y 的(de)(de)(de)220V 交流電(dian)(dian)(dian)(dian)源，Y 開(kai)始(shi)動作(zuo)，使(shi)洗(xi)手(shou)器(qi)(qi)放(fang)(fang)出(chu)自來水，供人們洗(xi)滌(di)之用，同時(shi)發(fa)光二極(ji)(ji)管(guan)LED2 發(fa)出(chu)綠(lv)光，指示洗(xi)手(shou)器(qi)(qi)正工作(zuo)于放(fang)(fang)水狀態。洗(xi)滌(di)完畢(bi)，人手(shou)離開(kai)洗(xi)手(shou)器(qi)(qi)后(hou)(hou)，N4 延時(shi)幾秒鐘后(hou)(hou)復位，使(shi)洗(xi)手(shou)器(qi)(qi)停(ting)止放(fang)(fang)水。

圖1中(zhong)，變(bian)壓器(qi)T采(cai)用220V/9V小型交(jiao)流變(bian)壓器(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)用JRX-13F、6V小型直(zhi)流繼電(dian)器(qi)，Y采(cai)用市(shi)售的220V交(jiao)流電(dian)磁(ci)閥，其余(yu)元件型號與(yu)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)手器電路(lu)圖如圖二(er)所示，電路(lu)由紅外發(fa)射部分與紅外接收控制部分組(zu)成。

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紅(hong)外(wai)發(fa)射(she)部(bu)分(fen)由(you)555時基(ji)電路產生頻率為(wei)5kHz，占空比為(wei)50％的方波信號，驅(qu)動紅(hong)外(wai)發(fa)射(she)管發(fa)射(she)紅(hong)外(wai)線(xian)。

在手置于干手器下部時(shi)，由(you)于手(shou)對(dui)紅(hong)(hong)外線(xian)的(de)(de)反(fan)射作(zuo)用(yong)，接(jie)收電(dian)(dian)路中的(de)(de)PH302將接(jie)收到的(de)(de)紅(hong)(hong)外線(xian)變成電(dian)(dian)信(xin)號，經IC1、IC2、IC3 組成的(de)(de)選頻(pin)放大器(qi)(qi)，其輸出信(xin)號經放大、整形(xing)、濾波變成直流信(xin)號進人(ren)比較器(qi)(qi)IC4。比較器(qi)(qi)的(de)(de)門(men)限電(dian)(dian)壓為7V，設(she)(she)置較高，其目的(de)(de)是提高電(dian)(dian)路的(de)(de)抗干擾能力(li)。當IC4 的(de)(de)輸人(ren)電(dian)(dian)平超過(guo)7V 時(shi)，其輸出變為低電(dian)(dian)平，觸(chu)發(fa)IC5 定(ding)時(shi)器(qi)(qi)開(kai)始定(ding)時(shi)，同(tong)時(shi)該定(ding)時(shi)器(qi)(qi)的(de)(de)3 腳變為高電(dian)(dian)平，使3DG130 導通(tong)，繼電(dian)(dian)器(qi)(qi)觸(chu)點吸合(he)，接(jie)通(tong)電(dian)(dian)阻絲和風機(ji)。在定(ding)時(shi)器(qi)(qi)的(de)(de)2 腳設(she)(she)置了手(shou)動開(kai)關S1，可進行手(shou)動操作(zuo)，還可通(tong)過(guo)S2 選擇(ze)冷風或熱風。