一、通信設備是什么設備
通信(xin),指人與人或(huo)人與自(zi)然之間通過某種行為或(huo)媒介進(jin)行的(de)信(xin)息(xi)交(jiao)流與傳(chuan)遞,從廣義上指需要(yao)信(xin)息(xi)的(de)雙方(fang)或(huo)多(duo)方(fang)在不違(wei)背各自(zi)意(yi)愿的(de)情(qing)況(kuang)下采用任意(yi)方(fang)法、任意(yi)媒質,將信(xin)息(xi)從某方(fang)準確(que)安全地傳(chuan)送(song)到另一方(fang)。
通信(xin)設備是(shi)用于通信(xin)的(de)設備器(qi)材,指設置在一(yi)定地域上,用以傳送電波信(xin)息的(de)通信(xin)器(qi)材,一(yi)般是(shi)通過計算(suan)機(ji)網(wang)絡系(xi)統(tong)和數據(ju)通信(xin)系(xi)統(tong)實(shi)現(xian)數據(ju)的(de)端到端傳輸的(de)設備。
二、通信設備有哪些種類
通(tong)信(xin)設備一般包括(kuo)用于工控環境的有(you)線通(tong)信(xin)設備和(he)無線通(tong)信(xin)設備:
1、有線通信設備
有(you)線(xian)(xian)通(tong)(tong)信(xin)是(shi)指通(tong)(tong)信(xin)設(she)(she)備傳(chuan)輸間需要經過(guo)線(xian)(xian)纜連接,即利用架空線(xian)(xian)纜、同軸(zhou)線(xian)(xian)纜、光纖(xian)、音(yin)頻線(xian)(xian)纜等(deng)傳(chuan)輸介質(zhi)傳(chuan)輸信(xin)息(xi)方(fang)式;有(you)線(xian)(xian)通(tong)(tong)信(xin)設(she)(she)備最大優勢(shi)就是(shi)抗干擾(rao)性(xing)強,穩定性(xing)高,具備一定的保密性(xing),傳(chuan)輸速率快,帶寬能(neng)夠無限(xian)大;但有(you)線(xian)(xian)通(tong)(tong)信(xin)受環境(jing)影響較(jiao)大,擴展性(xing)較(jiao)弱,有(you)衰減(jian),施(shi)工難度大,移動性(xing)差,費(fei)用高。
常(chang)用的有(you)線通信設備主要有(you):電(dian)腦、電(dian)視、電(dian)話、PCM、光端機、服(fu)務器(qi)等。
2、無線通信設備
無線(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin)是指不需要(yao)物理連接線(xian)的通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin),即利用電磁(ci)波信(xin)(xin)(xin)(xin)號可以在自由(you)空(kong)間中傳(chuan)播的特征進行信(xin)(xin)(xin)(xin)息交換的一種通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin)方式。無線(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin)設備最大優(you)點(dian)就是環(huan)境,不需要(yao)受線(xian)的限(xian)制(zhi),具有(you)一定的移(yi)動性,可以在移(yi)動狀態下通(tong)(tong)(tong)(tong)過無線(xian)連接進行通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin),施工難度低,成本低;但無線(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)(xin)設備抗干擾較弱,傳(chuan)輸(shu)速(su)率較慢,帶寬(kuan)有(you)限(xian),傳(chuan)輸(shu)距離也有(you)限(xian)制(zhi),費用低。
常(chang)用的無線通信設備主要(yao)有(you):衛星、無線電(dian)臺、無線電(dian)視(公交(jiao)車或地鐵上)、無線局域網、移動電(dian)話(手(shou)機(ji))、手(shou)機(ji)GPRS上網等。