強電這一(yi)概念是(shi)相對(dui)于弱電而言(yan)，一(yi)般并無電壓(ya)電流的(de)具體界限劃(hua)分。

　　電(dian)子類人們習慣分為強(qiang)電(dian)(電(dian)力)和弱(ruo)電(dian)(信息)兩部分。兩者既有聯系(xi)又(you)有區(qu)別，一般來(lai)說強(qiang)電(dian)的(de)(de)(de)處理對象是(shi)(shi)(shi)能(neng)源(yuan)(電(dian)力)，其特(te)點是(shi)(shi)(shi)電(dian)壓(ya)高、電(dian)流大、功率(lv)大、頻率(lv)低，主要(yao)考慮(lv)的(de)(de)(de)問(wen)題(ti)是(shi)(shi)(shi)減少損耗、提高效率(lv)，弱(ruo)電(dian)的(de)(de)(de)處理對象主要(yao)是(shi)(shi)(shi)信息，即信息的(de)(de)(de)傳送(song)(song)和控(kong)制，其特(te)點是(shi)(shi)(shi)電(dian)壓(ya)低、電(dian)流小、功率(lv)小、頻率(lv)高，主要(yao)考慮(lv)的(de)(de)(de)是(shi)(shi)(shi)信息傳送(song)(song)的(de)(de)(de)效果問(wen)題(ti)，如(ru)信息傳送(song)(song)的(de)(de)(de)保真度、速(su)度、廣度、可靠性(xing)。一般來(lai)說，弱(ruo)電(dian)工程(cheng)(cheng)包括電(dian)視工程(cheng)(cheng)、通信工程(cheng)(cheng)、消防工程(cheng)(cheng)、保安工程(cheng)(cheng)、影像工程(cheng)(cheng)等等和為上述工程(cheng)(cheng)服務的(de)(de)(de)綜合布(bu)線(xian)工程(cheng)(cheng)。弱(ruo)電(dian)是(shi)(shi)(shi)針(zhen)對強(qiang)電(dian)而言的(de)(de)(de)。強(qiang)電(dian)=(380/220)、高壓(ya)不管。

　　 在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力系統中(zhong)，36v以下的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)稱(cheng)(cheng)為(wei)(wei)安全電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，3kv以下的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)稱(cheng)(cheng)為(wei)(wei)低(di)壓(ya)(ya)(ya)，3kv以上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)稱(cheng)(cheng)為(wei)(wei)高壓(ya)(ya)(ya)，直接供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)給(gei)用戶的(de)線(xian)路稱(cheng)(cheng)為(wei)(wei)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)線(xian)路，如(ru)用戶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)380/220v，則稱(cheng)(cheng)為(wei)(wei)低(di)壓(ya)(ya)(ya)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)線(xian)路，也(ye)就(jiu)是(shi)家(jia)庭裝修(xiu)中(zhong)所說(shuo)的(de)強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(因它是(shi)家(jia)庭使用最高的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))。強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)一般是(shi)指交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)在24V以上。如(ru)家(jia)庭中(zhong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)燈、插座等(deng)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)在110V~220V。家(jia)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣中(zhong)的(de)照明燈具(ju)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)熱水器、取暖(nuan)器、冰箱、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)視機(ji)、空(kong)調、音響設(she)備(bei)等(deng)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器均為(wei)(wei)強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣設(she)備(bei)。

智(zhi)能化(hua)系統為建筑設備(bei)監控(kong)系統、安全防(fang)范(fan)系統、通訊網絡(luo)系統、信(xin)息網絡(luo)系統、火災自動報警及消防(fang)聯動等系統，以集中(zhong)監視(shi)(shi)、控(kong)制(zhi)和管(guan)理為目的(de)(de)構成的(de)(de)綜合系統;家(jia)庭(ting)(ting)內各種數據采集、控(kong)制(zhi)、管(guan)理及通訊的(de)(de)控(kong)制(zhi)或(huo)(huo)網絡(luo)系統等線(xian)(xian)路(lu)(lu)，則稱為智(zhi)能化(hua)線(xian)(xian)路(lu)(lu)(也就是(shi)家(jia)庭(ting)(ting)裝修中(zhong)所說的(de)(de)弱(ruo)(ruo)電(dian)(dian))。弱(ruo)(ruo)電(dian)(dian)一(yi)般(ban)是(shi)指直(zhi)流電(dian)(dian)路(lu)(lu)或(huo)(huo)音(yin)頻(pin)、視(shi)(shi)頻(pin)線(xian)(xian)路(lu)(lu)、網絡(luo)線(xian)(xian)路(lu)(lu)、電(dian)(dian)話線(xian)(xian)路(lu)(lu)，直(zhi)流電(dian)(dian)壓一(yi)般(ban)在24V以內。家(jia)用電(dian)(dian)氣中(zhong)的(de)(de)電(dian)(dian)話、電(dian)(dian)腦、電(dian)(dian)視(shi)(shi)機(ji)的(de)(de)信(xin)號(hao)輸(shu)(shu)入(有線(xian)(xian)電(dian)(dian)視(shi)(shi)線(xian)(xian)路(lu)(lu))、音(yin)響設備(bei)(輸(shu)(shu)出端線(xian)(xian)路(lu)(lu))等用電(dian)(dian)器均為弱(ruo)(ruo)電(dian)(dian)電(dian)(dian)氣設備(bei)。

　　弱電

　　弱電(dian)一(yi)般(ban)是指(zhi)直(zhi)(zhi)流電(dian)路(lu)或音(yin)頻、視頻線(xian)路(lu)、網絡線(xian)路(lu)、電(dian)話線(xian)路(lu)，直(zhi)(zhi)流電(dian)壓(ya)一(yi)般(ban)在32V以(yi)內。家用(yong)電(dian)器(qi)中的(de)(de)電(dian)話、電(dian)腦、電(dian)視機的(de)(de)信(xin)號輸(shu)(shu)入(有線(xian)電(dian)視線(xian)路(lu))、音(yin)響設(she)備(輸(shu)(shu)出端線(xian)路(lu))等用(yong)電(dian)器(qi)均為弱電(dian)電(dian)氣設(she)備。

　建筑(zhu)中的(de)(de)弱(ruo)(ruo)電(dian)(dian)主要有兩類：一類是國家規(gui)定的(de)(de)安全電(dian)(dian)壓(ya)等級及控(kong)制弱(ruo)(ruo)電(dian)(dian)電(dian)(dian)壓(ya)等低電(dian)(dian)壓(ya)電(dian)(dian)能(neng)，有交流(liu)與直流(liu)之分，如(ru)24V直流(liu)控(kong)制電(dian)(dian)源，或應急照明燈備用電(dian)(dian)源。另(ling)一類是載有語音、圖(tu)像、數據等信(xin)息(xi)的(de)(de)信(xin)息(xi)源，如(ru)電(dian)(dian)話、電(dian)(dian)視、計算(suan)機的(de)(de)信(xin)息(xi)。

　　狹義上的建筑弱電主要是指(zhi)：安防(監控、周(zhou)界報(bao)警、停車場)、消防(電氣部分)、樓控以(yi)及網絡綜合布線(xian)和音頻系(xi)統等。

　　與(yu)強電(dian)的(de)區別(bie)

　　強(qiang)電(dian)和弱電(dian)從概(gai)念上講，一(yi)般是(shi)容易區(qu)別(bie)(bie)的(de)，主要區(qu)別(bie)(bie)是(shi)用(yong)途的(de)不同(tong)。強(qiang)電(dian)是(shi)用(yong)作(zuo)一(yi)種動力能(neng)源，弱電(dian)是(shi)用(yong)于信息傳遞。它們大致有如下區(qu)別(bie)(bie)：

　　交流頻(pin)率不同

　　強電的頻(pin)率一般是50Hz(赫)，稱“工頻(pin)”，意即(ji)工業用電的頻(pin)率：弱電的頻(pin)率往(wang)往(wang)是高頻(pin)或特高頻(pin)，以KHz(千赫)、MHz(兆赫)計。

　　傳輸方式不同

　　強電(dian)(dian)以(yi)輸電(dian)(dian)線(xian)(xian)路傳(chuan)輸，弱(ruo)電(dian)(dian)的傳(chuan)輸有(you)(you)有(you)(you)線(xian)(xian)與無線(xian)(xian)之分(fen)。無線(xian)(xian)電(dian)(dian)則以(yi)電(dian)(dian)磁波傳(chuan)輸。

功率、電壓及電流大小不同(tong)

　分(fen)類

建筑中的弱電(dian)(dian)(dian)主要有兩類(lei)(lei)：一(yi)類(lei)(lei)是國家規定的安全(quan)電(dian)(dian)(dian)壓(ya)等(deng)級及控制電(dian)(dian)(dian)壓(ya)等(deng)低電(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)能(neng)，有交流與直流之分，如24V直流控制電(dian)(dian)(dian)源，或應急照明燈(deng)備用電(dian)(dian)(dian)源。另(ling)一(yi)類(lei)(lei)是載(zai)有語音、圖像、數據等(deng)信息(xi)的信息(xi)源，如電(dian)(dian)(dian)話、電(dian)(dian)(dian)視、計算(suan)機的信息(xi)。

弱(ruo)電系統

智(zhi)能(neng)(neng)建筑(zhu)(zhu)的(de)(de)弱(ruo)(ruo)電(dian)(dian)系統(tong)，是智(zhi)能(neng)(neng)建筑(zhu)(zhu)中(zhong)智(zhi)能(neng)(neng)化群體的(de)(de)基本成弱(ruo)(ruo)電(dian)(dian)員(yuan)(yuan)，也是智(zhi)能(neng)(neng)建筑(zhu)(zhu)的(de)(de)關(guan)鍵組成部分，并且(qie)是建筑(zhu)(zhu)電(dian)(dian)氣專業人員(yuan)(yuan)日常工(gong)作的(de)(de)主(zhu)要對象(xiang)。70年代以(yi)前的(de)(de)弱(ruo)(ruo)電(dian)(dian)設計，只(zhi)有電(dian)(dian)話與廣播設計，而到(dao)了80年代以(yi)后，在它的(de)(de)內容(rong)中(zhong)增加了消防報警與聯動控制(zhi)、共用天線、保安監(jian)視(shi)、空調DDC控制(zhi)等。

弱電設(she)計(ji)的設(she)計(ji)內容在一步步擴大(da)、擴展，技(ji)術越(yue)來(lai)越(yue)新，工(gong)作量也越(yue)來(lai)越(yue)大(da)，智能(neng)化(hua)(hua)大(da)廈弱電系(xi)(xi)(xi)(xi)統(tong)一般包括以下(xia)幾個分(fen)系(xi)(xi)(xi)(xi)統(tong)：樓宇自動化(hua)(hua)管理分(fen)系(xi)(xi)(xi)(xi)統(tong)(BAS)、消防自動報(bao)警(jing)(jing)分(fen)系(xi)(xi)(xi)(xi)統(tong)(FAS)、安保監控分(fen)系(xi)(xi)(xi)(xi)統(tong)(CCTV)、衛(wei)星接收及(ji)有線(xian)電視(shi)分(fen)系(xi)(xi)(xi)(xi)統(tong)(CATV)、地下(xia)車庫管理分(fen)系(xi)(xi)(xi)(xi)統(tong)(CPS)、公共(gong)廣播及(ji)緊急廣播分(fen)系(xi)(xi)(xi)(xi)統(tong)(PAS)、程(cheng)控交換(huan)機分(fen)系(xi)(xi)(xi)(xi)統(tong)(PABX)、結構(gou)化(hua)(hua)綜合布線(xian)系(xi)(xi)(xi)(xi)統(tong)(PDS)在樓宇自動化(hua)(hua)管理分(fen)系(xi)(xi)(xi)(xi)統(tong)中往往包含(han)出入口控制(zhi)分(fen)系(xi)(xi)(xi)(xi)統(tong)及(ji)防盜報(bao)警(jing)(jing)分(fen)系(xi)(xi)(xi)(xi)統(tong)。

智能(neng)化大廈各個分系(xi)統為(wei)大廈提(ti)(ti)供了(le)(le)各類機電(dian)設備的監控管理，為(wei)大廈用戶創造(zao)了(le)(le)安全、健康、舒適宜人(ren)并且(qie)能(neng)提(ti)(ti)高工作(zuo)效率的辦公環境，提(ti)(ti)供了(le)(le)現代化的通訊手段與(yu)辦公條件，滿足了(le)(le)多種用戶對不同環境、功能(neng)的要求。

樓宇自動化管理分系統 (BAS)

樓宇(yu)自動化(hua)管理分(fen)系統(tong)(tong)是(shi)智能化(hua)大廈弱(ruo)(ruo)電(dian)系統(tong)(tong)的核(he)心，它(ta)的高(gao)可靠(kao)性是(shi)整個弱(ruo)(ruo)電(dian)系統(tong)(tong)高(gao)可靠(kao)性的基(ji)石(shi)，因此BAS系統(tong)(tong)采取三級控(kong)制方(fang)式(shi)。

消防(fang)自動(dong)報(bao)警分系(xi)統(FAS)

采用(yong)智能型煙(yan)霧(wu)感(gan)應(ying)(ying)探頭(tou)和溫(wen)度感(gan)應(ying)(ying)探頭(tou)，能夠智能地感(gan)應(ying)(ying)煙(yan)霧(wu)與(yu)熱(re)量，給出(chu)相應(ying)(ying)的(de)模(mo)擬量值，通過先進(jin)的(de)算法，能使(shi)系統區分真實報(bao)(bao)警(jing)(jing)和誤報(bao)(bao)干擾。系統的(de)顯示屏上可圖(tu)形化顯示火警(jing)(jing)的(de)確(que)(que)切地點及報(bao)(bao)警(jing)(jing)性質。消(xiao)防(fang)(fang)報(bao)(bao)警(jing)(jing)確(que)(que)認(ren)后，系統可自(zi)動(dong)發出(chu)相應(ying)(ying)的(de)消(xiao)防(fang)(fang)緊急廣播及消(xiao)防(fang)(fang)聯動(dong)控制，為人員的(de)安全疏(shu)散和正確(que)(que)有效地撲滅(mie)火災(zai)奠定了基礎(chu)。

安保(bao)監(jian)控系(xi)統(CCTV)由閉路電視監視系統、出入口控制、巡更系統及防盜報警系統組成。衛星接收及有線電視分系統衛星接收及有線電視分系統(CATV)是現在普遍設置的基本系統。衛星接收系統就是利用衛星來直接轉發電視信號的系統，其作用相當于一個空間轉發站，是解決電視復蓋率問題和高質量傳輸電視圖象信號的最好方法。有線電視(公用天線)系統采用一組優質天線，以有線方式將電視信號分送到電視系統的各用戶，具有雙向通訊、可視電話、圖文傳輸功能，并可與家用計算機終端聯網 。

地(di)下(xia)車庫管(guan)理系統(CPS)以計算機網絡為核心，配備現代化停車場必需的各種裝置如發票/驗票機、自動柵欄機、車輛感應線圈、收費機等，系統可采用全自動或半自動管理兩大模式動作。

公共廣播系統(PAS)主要在大樓內的商場、商務中心、大堂、餐廳、公共走道等部分使用，可提供調頻、調幅廣播節目、雙卡放音信號、激光唱機信號及話筒信號，通過混音器可任選上述任何一路音源，經過音量控制電路將音量調整至合適水平，再經區域選擇器輸出至給定的區域廣播。當有消防報警信號時，系統會自動關閉公共廣播，并自動將著火層及其上、下層切換至緊急廣播，必要時，亦可手動用機附話筒進行人工指揮。

數字程控電話交換機系統(PABX)提供足夠的話路容量保證大樓內所有用戶的使用要求，并為將來的擴容留有余量。系統可通過簡單配置提供接口來實現ISDN功能，并可通過選配X..25接口實現分組交換或選配其他接口實現諸如數據通訊的功能，通過軟件設置，可實現在本系統內建立專用虛擬網功能。系統具有縮位撥號、呼叫特種業務、電話會議、遇忙回叫、通話保密、電子信箱、語音信箱等多種功能，系統還具有日常自動檢測、診斷、定位及主機嚴重故障時自動切換到備用機的功能。

結構化綜合(he)布線系統(PDS)是整幢大樓的"神經系統"，提高語音通訊、傳真等圖象資料、電視會議等視頻信號及數據通訊等的聯網應用。結構化綜合布線系統由六個獨立的子系統組成，即工作區子系統、水平子系統、管理子系統、垂直主干子系統、設備間子系統、建筑群子系統。

功能及(ji)應用

電力(li)應用(yong)(yong)(yong)按照電力(li)輸送功率的強(qiang)弱可(ke)以分(fen)為(wei)(wei)強(qiang)電與弱電兩(liang)類。建筑及(ji)建筑群(qun)用(yong)(yong)(yong)電一(yi)般指交流220V50Hz及(ji)以上的強(qiang)電。主要向(xiang)人們提供電力(li)能源(yuan)，將(jiang)電能轉(zhuan)換(huan)為(wei)(wei)其(qi)他能源(yuan)，例(li)如空調用(yong)(yong)(yong)電，照明用(yong)(yong)(yong)電，動力(li)用(yong)(yong)(yong)電等(deng)等(deng)。

智能建筑中的(de)弱電(dian)(dian)(dian)(dian)主要有(you)兩類，一(yi)類是國家規(gui)定的(de)安全電(dian)(dian)(dian)(dian)壓等(deng)級及控(kong)制電(dian)(dian)(dian)(dian)壓等(deng)低電(dian)(dian)(dian)(dian)壓電(dian)(dian)(dian)(dian)能，有(you)交(jiao)流(liu)與直(zhi)流(liu)之(zhi)分，交(jiao)流(liu)36V以下(xia)，直(zhi)流(liu)24V以下(xia)，如24V直(zhi)流(liu)控(kong)制電(dian)(dian)(dian)(dian)源(yuan)，或(huo)應急照(zhao)明燈備用電(dian)(dian)(dian)(dian)源(yuan)。另一(yi)類是載(zai)有(you)語音、圖(tu)像、數據等(deng)信(xin)(xin)(xin)息的(de)信(xin)(xin)(xin)息源(yuan)，如電(dian)(dian)(dian)(dian)話、電(dian)(dian)(dian)(dian)視、計算機(ji)的(de)信(xin)(xin)(xin)息。

人們習慣把弱(ruo)(ruo)電(dian)(dian)(dian)(dian)方面的(de)技(ji)術(shu)(shu)稱之(zhi)為(wei)弱(ruo)(ruo)電(dian)(dian)(dian)(dian)技(ji)術(shu)(shu)。可見智(zhi)能(neng)建筑弱(ruo)(ruo)電(dian)(dian)(dian)(dian)技(ji)術(shu)(shu)基本涵(han)義仍(reng)然是原(yuan)來(lai)意(yi)義上(shang)的(de)弱(ruo)(ruo)電(dian)(dian)(dian)(dian)技(ji)術(shu)(shu)。只不過隨(sui)著現(xian)代弱(ruo)(ruo)電(dian)(dian)(dian)(dian)高新技(ji)術(shu)(shu)的(de)迅速(su)發展，智(zhi)能(neng)建筑中的(de)弱(ruo)(ruo)電(dian)(dian)(dian)(dian)技(ji)術(shu)(shu)應(ying)用(yong)越(yue)來(lai)越(yue)廣(guang)泛。 一般情況下，弱(ruo)(ruo)電(dian)(dian)(dian)(dian)系(xi)統工(gong)程(cheng)指第二類應(ying)用(yong)。

主(zhu)要包括：1、電(dian)視(shi)信號(hao)工(gong)(gong)(gong)程，如電(dian)視(shi)監控系(xi)統，有(you)線(xian)電(dian)視(shi)。2、通信工(gong)(gong)(gong)程，如電(dian)話(hua)。3、智能消防(fang)工(gong)(gong)(gong)程。4、擴聲與音響工(gong)(gong)(gong)程，如小(xiao)區(qu)的(de)(de)中(zhong)背景(jing)音樂廣播(bo)，建筑物中(zhong)的(de)(de)背景(jing)音樂。5、綜合(he)布(bu)線(xian)工(gong)(gong)(gong)程，主(zhu)要用于(yu)計算機網(wang)絡。隨著計算機技術(shu)的(de)(de)飛速發(fa)展，軟硬件功(gong)能的(de)(de)迅速強大(da)，各種弱電(dian)系(xi)統工(gong)(gong)(gong)程和計算機技術(shu)的(de)(de)完美(mei)結合(he)，使(shi)以往的(de)(de)各種分類(lei)不再像以前那么清晰。各類(lei)工(gong)(gong)(gong)程的(de)(de)相互融合(he)，就是系(xi)統集成(cheng)。

常見(jian)的(de)(de)弱電(dian)(dian)(dian)系統工作電(dian)(dian)(dian)壓(ya)(ya)包(bao)括：24VAC、16.5VAC、12VDC，有(you)的(de)(de)時候220VAC也算(suan)弱電(dian)(dian)(dian)系統，比(bi)如有(you)的(de)(de)由攝像機(ji)的(de)(de)工作電(dian)(dian)(dian)壓(ya)(ya)是220VAC，我們就不(bu)能把它們歸入強電(dian)(dian)(dian)系統。弱電(dian)(dian)(dian)系統主要針對的(de)(de)是建筑物，包(bao)括大(da)廈、小區、機(ji)場(chang)、碼頭、鐵路(lu)、高速公路(lu)等。

常(chang)見(jian)的弱電系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)包括(kuo)：閉路電視監控系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、防盜報(bao)警系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、門禁系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、電子巡(xun)更系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、停車(che)場管(guan)理(li)系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、可(ke)視對講系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、家庭智能化系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)及安防系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、背景音樂(le)系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、LED顯示系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、等(deng)離子拼(pin)接屏系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、DLP大屏系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、三表抄送系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、樓宇自控系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、防雷與(yu)接地系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、尋呼對講及專業對講系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong)、弱電管(guan)道(dao)系(xi)(xi)(xi)(xi)(xi)(xi)(xi)(xi)統(tong)(tong).

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        編輯：梁靜茹