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沈陽弱電工程

弱(ruo)電(dian)工(gong)程又叫智能建筑，也叫系統(tong)集成工(gong)程，所(suo)有與信息有關的(de)都(dou)屬于(yu)弱(ruo)電(dian)這一(yi)塊的(de)。弱(ruo)電(dian)是(shi)相(xiang)對于(yu)強(qiang)(qiang)電(dian)而(er)言(yan)的(de)強(qiang)(qiang)電(dian)和(he)弱(ruo)電(dian)從概念上講，一(yi)般是(shi)容(rong)易區別(bie)的(de)，主要區別(bie)是(shi)用途(tu)的(de)不同。強(qiang)(qiang)電(dian)是(shi)用作一(yi)種動力能源，弱(ruo)電(dian)是(shi)用于(yu)信息傳遞。

具體而言，它們大致有如下(xia)區別：

(1)功率(lv)、電(dian)壓及電(dian)流大小不同

強電(dian)(dian)功率以(yi)(yi)KW(千(qian)瓦(wa))、MW(兆(zhao)瓦(wa))計(ji)、電(dian)(dian)壓(ya)以(yi)(yi)V(伏(fu))、KV(千(qian)伏(fu))計(ji)，電(dian)(dian)流(liu)以(yi)(yi)A(安)、kA(千(qian)安)計(ji);弱電(dian)(dian)功率以(yi)(yi)W(瓦(wa))、mW(毫(hao)瓦(wa))計(ji)，電(dian)(dian)壓(ya)以(yi)(yi)V(伏(fu))、mV(毫(hao)伏(fu))計(ji)，電(dian)(dian)流(liu)以(yi)(yi)mA(毫(hao)安)、A(微安)計(ji)，因(yin)而其電(dian)(dian)路(lu)(lu)可以(yi)(yi)用(yong)印刷電(dian)(dian)路(lu)(lu)或(huo)集成(cheng)電(dian)(dian)路(lu)(lu)構(gou)成(cheng)。

(2)交流頻率不同

強(qiang)電的(de)頻(pin)(pin)率(lv)一般是50Hz(赫)，稱“工(gong)頻(pin)(pin)”，意即工(gong)業(ye)用電的(de)頻(pin)(pin)率(lv)：弱(ruo)電的(de)頻(pin)(pin)率(lv)往往是高頻(pin)(pin)或特高頻(pin)(pin)，以KHz(千(qian)赫)、MHz(兆赫)計。

(3)傳輸方式不同

強電以輸(shu)(shu)電線(xian)(xian)路(lu)傳(chuan)輸(shu)(shu)，弱電的傳(chuan)輸(shu)(shu)有(you)有(you)線(xian)(xian)與無線(xian)(xian)之分。無線(xian)(xian)電則以電磁波傳(chuan)輸(shu)(shu)。

當然，強電(dian)(dian)(dian)(dian)中也有高(gao)頻(數百KHz)與中頻設備(bei)，但電(dian)(dian)(dian)(dian)壓較(jiao)(jiao)高(gao)，電(dian)(dian)(dian)(dian)流也較(jiao)(jiao)大。又如(ru)手電(dian)(dian)(dian)(dian)筒與電(dian)(dian)(dian)(dian)動剃須刀雖(sui)然電(dian)(dian)(dian)(dian)壓很(hen)低，功率及電(dian)(dian)(dian)(dian)流很(hen)小(xiao)，仍屬強電(dian)(dian)(dian)(dian)。由(you)于(yu)現代技術的(de)發展，弱電(dian)(dian)(dian)(dian)己滲透到強電(dian)(dian)(dian)(dian)領域(yu)，如(ru)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)器件、無線遙控等(deng)，但這些只能(neng)算作強電(dian)(dian)(dian)(dian)中的(de)弱電(dian)(dian)(dian)(dian)控制部(bu)分，它與被(bei)控的(de)強電(dian)(dian)(dian)(dian)還是不同的(de)。