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監控系統光纖傳輸接線圖解

在監控系統(tong)傳(chuan)輸(shu)(shu)線(xian)(xian)路中，常見(jian)的有網線(xian)(xian)傳(chuan)輸(shu)(shu)和(he)光纖傳(chuan)輸(shu)(shu)。網線(xian)(xian)由于材質等影響(xiang)超(chao)(chao)過(guo)100米(mi)后(hou)信號就開始衰減(jian)，影響(xiang)監控系統(tong)信號傳(chuan)輸(shu)(shu)。因此超(chao)(chao)過(guo)100米(mi)之后(hou)，我們(men)考慮使(shi)用光纖傳(chuan)輸(shu)(shu)。光纖傳(chuan)輸(shu)(shu)可達20Km，在大型視頻監控系統(tong)中經常使(shi)用。

光(guang)纖(xian)傳(chuan)輸(shu)由于需要將(jiang)電信(xin)(xin)號(hao)轉(zhuan)化為(wei)光(guang)信(xin)(xin)號(hao)，因此需要專門的設備進行(xing)轉(zhuan)換，這種(zhong)設備就是光(guang)纖(xian)收(shou)發(fa)器(qi)(qi)。光(guang)纖(xian)收(shou)發(fa)器(qi)(qi)是成對來使用的。當攝像頭把視頻信(xin)(xin)號(hao)轉(zhuan)化為(wei)電信(xin)(xin)號(hao)后，經過(guo)網線(xian)傳(chuan)輸(shu)到光(guang)纖(xian)收(shou)發(fa)器(qi)(qi)。光(guang)纖(xian)收(shou)發(fa)器(qi)(qi)再將(jiang)電信(xin)(xin)號(hao)轉(zhuan)化為(wei)光(guang)信(xin)(xin)號(hao)通(tong)過(guo)光(guang)纖(xian)發(fa)送到監控(kong)室的收(shou)發(fa)器(qi)(qi)，監控(kong)室收(shou)發(fa)器(qi)(qi)再將(jiang)光(guang)信(xin)(xin)號(hao)轉(zhuan)化為(wei)電信(xin)(xin)號(hao)，通(tong)過(guo)網線(xian)傳(chuan)輸(shu)到硬盤錄像機里(li)面，然(ran)后硬盤錄像機通(tong)過(guo)HDMI或(huo)VGA線(xian)將(jiang)信(xin)(xin)號(hao)發(fa)送到顯示器(qi)(qi)，這個時候(hou)我們就可以看到監控(kong)錄像了。

光(guang)纖(xian)(xian)(xian)收發(fa)(fa)器(qi)也分(fen)為很多種(zhong)。從(cong)光(guang)纖(xian)(xian)(xian)的(de)性質(zhi)來劃分(fen)，可以分(fen)為多模(mo)光(guang)纖(xian)(xian)(xian)收發(fa)(fa)器(qi)和單模(mo)光(guang)纖(xian)(xian)(xian)收發(fa)(fa)器(qi)。它們兩者(zhe)的(de)區別在于所傳輸的(de)距離不一(yi)樣，多模(mo)收發(fa)(fa)器(qi)一(yi)般(ban)的(de)傳輸距離在2公(gong)(gong)里(li)到5公(gong)(gong)里(li)之間，而單模(mo)收發(fa)(fa)器(qi)覆蓋的(de)范圍可以從(cong)20公(gong)(gong)里(li)至(zhi)120公(gong)(gong)里(li)。

按(an)收(shou)發數據(ju)可分為單(dan)纖光纖收(shou)發器和雙(shuang)纖光纖收(shou)發器是按(an)所需(xu)光纖分類的，單(dan)纖光纖收(shou)發器是接(jie)收(shou)發送的數據(ju)在一根光纖上(shang)傳輸(shu)(shu)；而(er)雙(shuang)纖光纖收(shou)發器接(jie)收(shou)發送的數據(ju)在一對光纖上(shang)傳輸(shu)(shu)。

另(ling)外，根(gen)據其功能(neng)不同(tong)又可以分為(wei)網管型光(guang)纖(xian)收發器(qi)和非網管型光(guang)纖(xian)收發器(qi)。一般根(gen)據監控(kong)系統安裝方案(an)設(she)計要求進行設(she)備(bei)選擇(ze)和采購。不同(tong)的設(she)備(bei)價格(ge)和性能(neng)都有(you)很(hen)大區別(bie)，所以購買和選擇(ze)時(shi)要注(zhu)意查看(kan)功能(neng)參(can)數是否(fou)匹配。

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