【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(yi)般為傳感器(qi)(qi)(qi)檢(jian)測(ce)到信(xin)號(手)，此(ci)信(xin)號看(kan)(kan)控制打(da)開加(jia)熱(re)電(dian)路(lu)繼(ji)電(dian)器(qi)(qi)(qi)及吹風電(dian)路(lu)繼(ji)電(dian)器(qi)(qi)(qi)，開始加(jia)熱(re)、吹風。當傳感器(qi)(qi)(qi)檢(jian)測(ce)的(de)信(xin)號消(xiao)失時，釋放觸點，加(jia)熱(re)電(dian)路(lu)及吹風電(dian)路(lu)繼(ji)電(dian)器(qi)(qi)(qi)斷開，停止加(jia)熱(re)、吹風。那(nei)么，烘手機內部結構(gou)是什么？一(yi)起來看(kan)(kan)看(kan)(kan)烘手器(qi)(qi)(qi)電(dian)路(lu)說明和干手器(qi)(qi)(qi)電(dian)路(lu)板圖片展示吧！

1、自動洗手器電路

自動洗手器的電路原(yuan)理如圖(tu)一所示(shi)。

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220V 交流(liu)電(dian)(dian)(dian)路經(jing)變壓(ya)器(qi)T 降壓(ya)，變為(wei)(wei)(wei)低壓(ya)交流(liu)電(dian)(dian)(dian)，經(jing)整(zheng)流(liu)濾波，成(cheng)(cheng)為(wei)(wei)(wei)低壓(ya)直流(liu)，再經(jing)三(san)端(duan)集成(cheng)(cheng)穩壓(ya)電(dian)(dian)(dian)路7806穩壓(ya)，得到6V直流(liu)電(dian)(dian)(dian)供給控制(zhi)電(dian)(dian)(dian)路工(gong)作(zuo)(zuo)(zuo)。H1為(wei)(wei)(wei)紅(hong)色(se)發光(guang)二極管，作(zuo)(zuo)(zuo)為(wei)(wei)(wei)電(dian)(dian)(dian)源(yuan)指示。N2為(wei)(wei)(wei)紅(hong)外(wai)(wai)接(jie)收電(dian)(dian)(dian)路SFH506-38，N3為(wei)(wei)(wei)鎖相(xiang)環音(yin)頻(pin)譯(yi)碼(ma)器(qi)LM567，N3與R3、C6組(zu)成(cheng)(cheng)振蕩器(qi)，R3、R6決(jue)定(ding)N3內部壓(ya)控振蕩器(qi)的(de)中心(xin)頻(pin)率，LM567的(de)3腳為(wei)(wei)(wei)信(xin)號輸入(ru)端(duan)，8腳為(wei)(wei)(wei)邏輯輸出(chu)端(duan)，其(qi)輸出(chu)端(duan)為(wei)(wei)(wei)OC門(men)輸出(chu)，最(zui)大灌電(dian)(dian)(dian)流(liu)為(wei)(wei)(wei)100mA，LM567的(de)工(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)壓(ya)為(wei)(wei)(wei)4.75V～9V，工(gong)作(zuo)(zuo)(zuo)頻(pin)率可從(cong)零(ling)點幾赫茲到500千赫，靜(jing)態(tai)(tai)工(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)為(wei)(wei)(wei)8mA。N4為(wei)(wei)(wei)NE555定(ding)時(shi)器(qi)，它與外(wai)(wai)圍(wei)元件組(zu)成(cheng)(cheng)單穩態(tai)(tai)定(ding)時(shi)電(dian)(dian)(dian)路，其(qi)目的(de)是在人手(shou)偶爾偏離了紅(hong)外(wai)(wai)線的(de)探測范圍(wei)時(shi)，能(neng)保證(zheng)洗手(shou)器(qi)的(de)正常出(chu)水。

LM567芯片5腳(jiao)(jiao)(jiao)(jiao)輸出的(de)(de)(de)振(zhen)蕩信號經(jing)三(san)極(ji)管功率(lv)放大后，推動(dong)紅(hong)外發(fa)射(she)二極(ji)管VD向外發(fa)射(she)紅(hong)外線(xian)。沒有人洗(xi)(xi)手(shou)時，紅(hong)外接(jie)收(shou)(shou)(shou)電(dian)路N2接(jie)收(shou)(shou)(shou)不(bu)到(dao)VD向外發(fa)射(she)的(de)(de)(de)紅(hong)外線(xian)，N3的(de)(de)(de)3腳(jiao)(jiao)(jiao)(jiao)無信號輸入(ru)(ru)，8腳(jiao)(jiao)(jiao)(jiao)為高電(dian)平，N4 的(de)(de)(de)3 腳(jiao)(jiao)(jiao)(jiao)為低電(dian)平，三(san)極(ji)管截止，繼電(dian)器(qi)K 斷電(dian)處于釋放狀態(tai)，電(dian)磁閥(fa)Y 不(bu)動(dong)作，洗(xi)(xi)手(shou)器(qi)無自(zi)來(lai)水(shui)(shui)放出。當(dang)人手(shou)放到(dao)洗(xi)(xi)手(shou)器(qi)下時，N2 接(jie)收(shou)(shou)(shou)到(dao)人手(shou)反(fan)射(she)的(de)(de)(de)紅(hong)外線(xian)并經(jing)N2 放大后，輸入(ru)(ru)到(dao)N3的(de)(de)(de)3腳(jiao)(jiao)(jiao)(jiao)，由N3內部處理后使(shi)(shi)N3的(de)(de)(de)8腳(jiao)(jiao)(jiao)(jiao)輸出低電(dian)平，從(cong)而(er)使(shi)(shi)N4的(de)(de)(de)低觸(chu)發(fa)端2腳(jiao)(jiao)(jiao)(jiao)變為低電(dian)位，導(dao)(dao)致N4 的(de)(de)(de)3 腳(jiao)(jiao)(jiao)(jiao)輸出高電(dian)平，三(san)極(ji)管導(dao)(dao)通，繼電(dian)器(qi)J1 吸合，使(shi)(shi)其常開觸(chu)點閉合，接(jie)通電(dian)磁閥(fa)Y 的(de)(de)(de)220V 交流電(dian)源，Y 開始動(dong)作，使(shi)(shi)洗(xi)(xi)手(shou)器(qi)放出自(zi)來(lai)水(shui)(shui)，供(gong)人們洗(xi)(xi)滌(di)之用，同時發(fa)光(guang)二極(ji)管LED2 發(fa)出綠光(guang)，指示洗(xi)(xi)手(shou)器(qi)正工作于放水(shui)(shui)狀態(tai)。洗(xi)(xi)滌(di)完畢(bi)，人手(shou)離開洗(xi)(xi)手(shou)器(qi)后，N4 延時幾秒(miao)鐘后復(fu)位，使(shi)(shi)洗(xi)(xi)手(shou)器(qi)停止放水(shui)(shui)。

圖1中，變(bian)壓(ya)器T采用(yong)220V/9V小型(xing)交(jiao)流(liu)變(bian)壓(ya)器，VD為PH303紅外發射二極(ji)(ji)管(guan)，VT1為8050三極(ji)(ji)管(guan)，VT2為9013三極(ji)(ji)管(guan)，J1采用(yong)JRX-13F、6V小型(xing)直流(liu)繼電器，Y采用(yong)市售的(de)220V交(jiao)流(liu)電磁閥(fa)，其余(yu)元件型(xing)號與數據見圖1 中所標參數。

2、自動干手器電路

自動干手(shou)器電(dian)路圖如圖二所示，電(dian)路由紅外發射(she)部(bu)分與紅外接收控制(zhi)部(bu)分組成。

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紅(hong)外發射部分(fen)由555時基(ji)電(dian)路產(chan)生頻率(lv)為5kHz，占空比為50％的方波信號，驅(qu)動(dong)紅(hong)外發射管發射紅(hong)外線。

在手置于干手器下部時(shi)，由于手(shou)對(dui)紅外線(xian)的(de)(de)(de)反射作用，接收(shou)電(dian)(dian)(dian)路中的(de)(de)(de)PH302將(jiang)接收(shou)到(dao)的(de)(de)(de)紅外線(xian)變成電(dian)(dian)(dian)信(xin)號(hao)，經IC1、IC2、IC3 組(zu)成的(de)(de)(de)選頻放大(da)器(qi)(qi)(qi)，其(qi)(qi)輸出信(xin)號(hao)經放大(da)、整形、濾波變成直流信(xin)號(hao)進(jin)人(ren)比較器(qi)(qi)(qi)IC4。比較器(qi)(qi)(qi)的(de)(de)(de)門限電(dian)(dian)(dian)壓為(wei)(wei)(wei)7V，設(she)置較高(gao)(gao)，其(qi)(qi)目的(de)(de)(de)是提(ti)高(gao)(gao)電(dian)(dian)(dian)路的(de)(de)(de)抗干(gan)擾能力(li)。當(dang)IC4 的(de)(de)(de)輸人(ren)電(dian)(dian)(dian)平(ping)(ping)超過7V 時(shi)，其(qi)(qi)輸出變為(wei)(wei)(wei)低(di)電(dian)(dian)(dian)平(ping)(ping)，觸(chu)發IC5 定時(shi)器(qi)(qi)(qi)開始定時(shi)，同時(shi)該(gai)定時(shi)器(qi)(qi)(qi)的(de)(de)(de)3 腳變為(wei)(wei)(wei)高(gao)(gao)電(dian)(dian)(dian)平(ping)(ping)，使(shi)3DG130 導通(tong)，繼電(dian)(dian)(dian)器(qi)(qi)(qi)觸(chu)點吸合，接通(tong)電(dian)(dian)(dian)阻絲和風(feng)機。在(zai)定時(shi)器(qi)(qi)(qi)的(de)(de)(de)2 腳設(she)置了手(shou)動開關S1，可進(jin)行手(shou)動操作，還可通(tong)過S2 選擇冷風(feng)或(huo)熱風(feng)。