【自動門(men)遙(yao)控(kong)器】自動門(men)遙(yao)控(kong)器的系統組成 自動門(men)遙(yao)控(kong)器工作頻率(lv)是(shi)多少

自動門遙控器的系統組成

常用的自動門遙控系統一般(ban)分發射和(he)接收兩個部分。

發(fa)射部分一(yi)(yi)般分為(wei)兩種類(lei)型，即遙控(kong)(kong)(kong)(kong)(kong)器與發(fa)射模(mo)塊(kuai)，遙控(kong)(kong)(kong)(kong)(kong)器和遙控(kong)(kong)(kong)(kong)(kong)模(mo)塊(kuai)是(shi)對(dui)于使(shi)用(yong)(yong)(yong)(yong)(yong)方式來說的(de)(de)，遙控(kong)(kong)(kong)(kong)(kong)器可以當一(yi)(yi)個(ge)整機來獨(du)立使(shi)用(yong)(yong)(yong)(yong)(yong)，對(dui)外引出線(xian)有接線(xian)樁(zhuang)頭；而遙控(kong)(kong)(kong)(kong)(kong)模(mo)塊(kuai)在(zai)電路(lu)中，當一(yi)(yi)個(ge)元件來使(shi)用(yong)(yong)(yong)(yong)(yong)，根據(ju)其引腳定義(yi)進(jin)行(xing)應用(yong)(yong)(yong)(yong)(yong)，使(shi)用(yong)(yong)(yong)(yong)(yong)遙控(kong)(kong)(kong)(kong)(kong)模(mo)塊(kuai)的(de)(de)優勢在(zai)于可以和應用(yong)(yong)(yong)(yong)(yong)電路(lu)天(tian)衣無縫的(de)(de)連(lian)接、體積小、價格(ge)低、物盡其用(yong)(yong)(yong)(yong)(yong)，但使(shi)用(yong)(yong)(yong)(yong)(yong)者必須真正懂得(de)電路(lu)原理，否則(ze)還是(shi)用(yong)(yong)(yong)(yong)(yong)遙控(kong)(kong)(kong)(kong)(kong)器來的(de)(de)方便。

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接(jie)收(shou)(shou)部分一(yi)般來說也(ye)(ye)分為兩種類型(xing)，即超(chao)(chao)外(wai)(wai)差與超(chao)(chao)再(zai)(zai)生(sheng)(sheng)接(jie)收(shou)(shou)方式(shi)(shi)，超(chao)(chao)再(zai)(zai)生(sheng)(sheng)解調電(dian)(dian)路(lu)(lu)(lu)(lu)也(ye)(ye)稱超(chao)(chao)再(zai)(zai)生(sheng)(sheng)檢波(bo)電(dian)(dian)路(lu)(lu)(lu)(lu)，它實際(ji)上是工作在間歇振(zhen)(zhen)蕩狀態下(xia)的再(zai)(zai)生(sheng)(sheng)檢波(bo)電(dian)(dian)路(lu)(lu)(lu)(lu)。超(chao)(chao)外(wai)(wai)差式(shi)(shi)解調電(dian)(dian)路(lu)(lu)(lu)(lu)與超(chao)(chao)外(wai)(wai)差收(shou)(shou)音機(ji)相同(tong)，它是設置(zhi)一(yi)本機(ji)振(zhen)(zhen)蕩電(dian)(dian)路(lu)(lu)(lu)(lu)產(chan)生(sheng)(sheng)振(zhen)(zhen)蕩信號，與接(jie)收(shou)(shou)到(dao)的載頻(pin)信號混(hun)頻(pin)后，得到(dao)中頻(pin)（一(yi)般為465kHz）信號，經中頻(pin)放(fang)大和檢波(bo)，解調出(chu)數據信號。由于(yu)載頻(pin)頻(pin)率是固定的，所以其電(dian)(dian)路(lu)(lu)(lu)(lu)要(yao)比收(shou)(shou)音機(ji)簡單一(yi)些。超(chao)(chao)外(wai)(wai)差式(shi)(shi)的接(jie)收(shou)(shou)器(qi)穩(wen)定、靈敏(min)度(du)高(gao)、抗干(gan)擾能力(li)也(ye)(ye)相對較好(hao)；超(chao)(chao)再(zai)(zai)生(sheng)(sheng)式(shi)(shi)的接(jie)收(shou)(shou)器(qi)體(ti)積小、價格便宜。

自動門遙控器工作頻率是多少

自動門遙控(kong)常用的載波頻(pin)(pin)(pin)率為(wei)315mHz或(huo)者433mHz，遙控(kong)器使用的是國(guo)(guo)家規(gui)定的開放頻(pin)(pin)(pin)段(duan)(duan)(duan)，在這(zhe)一頻(pin)(pin)(pin)段(duan)(duan)(duan)內，發射功率小(xiao)于(yu)10mW、覆蓋(gai)范圍(wei)小(xiao)于(yu)100m或(huo)不超(chao)過本單位范圍(wei)的，可以不必經過“無線電管(guan)理委員會(hui)”審批而(er)自由使用。我國(guo)(guo)的開放頻(pin)(pin)(pin)段(duan)(duan)(duan)規(gui)定為(wei)315mHz，而(er)歐美(mei)等國(guo)(guo)家規(gui)定為(wei)433mHz，所以出口到(dao)上述國(guo)(guo)家的產品應(ying)使用433mHz的遙控(kong)器。

自動門遙控器與紅外線遙控器的區別

紅外(wai)(wai)(wai)遙(yao)控(kong)(kong)和(he)無(wu)(wu)線遙(yao)控(kong)(kong)是(shi)(shi)對(dui)不(bu)(bu)同的載波來說的，紅外(wai)(wai)(wai)遙(yao)控(kong)(kong)器(qi)(qi)(qi)是(shi)(shi)用(yong)紅外(wai)(wai)(wai)線來傳(chuan)送控(kong)(kong)制(zhi)信號的，它的特(te)點是(shi)(shi)有(you)(you)方向性(xing)、不(bu)(bu)能有(you)(you)阻擋、距離一般不(bu)(bu)超(chao)過7米(mi)、不(bu)(bu)受(shou)電磁(ci)干擾，電視機遙(yao)控(kong)(kong)器(qi)(qi)(qi)就是(shi)(shi)紅外(wai)(wai)(wai)遙(yao)控(kong)(kong)器(qi)(qi)(qi)；自(zi)動(dong)門(men)(men)遙(yao)控(kong)(kong)器(qi)(qi)(qi)是(shi)(shi)用(yong)無(wu)(wu)線電波來傳(chuan)送控(kong)(kong)制(zhi)信號的，它的特(te)點是(shi)(shi)無(wu)(wu)方向性(xing)、可以(yi)不(bu)(bu)“面對(dui)面”控(kong)(kong)制(zhi)、距離遠(yuan)(yuan)（可達數(shu)(shu)十米(mi)，甚(shen)至數(shu)(shu)公里）、容易受(shou)電磁(ci)干擾。在需要遠(yuan)(yuan)距離穿透(tou)或(huo)者(zhe)無(wu)(wu)方向性(xing)控(kong)(kong)制(zhi)領(ling)域，比(bi)如工業(ye)控(kong)(kong)制(zhi)等等，使用(yong)自(zi)動(dong)門(men)(men)遙(yao)控(kong)(kong)器(qi)(qi)(qi)較易解決(jue)。

影響自動門遙控距離的因素有哪些

1、發射功率：自動門遙控器的發射功率大則距(ju)離遠，但耗電(dian)大，容易產生干擾；

2、接收(shou)(shou)靈敏度：接收(shou)(shou)器(qi)的接收(shou)(shou)靈敏度提高，遙控距(ju)離增大，但容(rong)易受干(gan)擾造成誤(wu)動或失控；

3、天線(xian)：采用(yong)直線(xian)型(xing)天線(xian)，并且相(xiang)互平行，遙控距離(li)(li)遠(yuan)，但占據空間大，在使用(yong)中把天線(xian)拉(la)長、拉(la)直可(ke)增(zeng)加遙控距離(li)(li)；

4、高度：天線越高，遙控距離越遠，但受(shou)客觀(guan)條件限制；

5、阻(zu)擋：無線遙控器使用(yong)(yong)國家規定的UHF頻(pin)段，其(qi)傳播特性和光近似，直線傳播，繞(rao)射較(jiao)小，發射器和接(jie)收器之間如有墻壁(bi)阻(zu)擋將(jiang)大大打折遙控距離，如果是鋼筋(jin)混泥(ni)土的墻壁(bi)，由(you)于(yu)導體對電波(bo)的吸收作用(yong)(yong)，影響更甚(shen)。