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網(wang)絡視頻(pin)監(jian)控系(xi)統(tong)的設計(ji)要點分(fen)析(xi)

1、加強電(dian)(dian)(dian)(dian)(dian)力(li)保護：網絡(luo)視(shi)頻監控系統依托于網絡(luo)，取電(dian)(dian)(dian)(dian)(dian)是通過(guo)PoE交換機或從弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)井(jing)和弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)間取電(dian)(dian)(dian)(dian)(dian)。因此(ci)，弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)井(jing)和弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)間的(de)電(dian)(dian)(dian)(dian)(dian)力(li)安(an)全(quan)就非常(chang)重要(yao)。如若停電(dian)(dian)(dian)(dian)(dian)，不光是全(quan)院的(de)網絡(luo)癱瘓(huan)(huan)，視(shi)頻監控系統也會跟著癱瘓(huan)(huan)，這就要(yao)求在設計(ji)的(de)時候一定要(yao)提高弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)井(jing)和弱(ruo)(ruo)電(dian)(dian)(dian)(dian)(dian)間的(de)用電(dian)(dian)(dian)(dian)(dian)安(an)全(quan)級(ji)別，增加UPS電(dian)(dian)(dian)(dian)(dian)源與備用供電(dian)(dian)(dian)(dian)(dian)線路；

2、前端IP攝(she)(she)像(xiang)(xiang)機(ji)按需配(pei)置：IP攝(she)(she)像(xiang)(xiang)機(ji)種類很(hen)多，不是(shi)很(hen)重要的(de)(de)(de)地點，配(pei)置720P的(de)(de)(de)IP攝(she)(she)像(xiang)(xiang)機(ji)就可(ke)以了，畢竟帶寬有(you)限，以后需要提高畫質(zhi)，再更(geng)換更(geng)高像(xiang)(xiang)素的(de)(de)(de)IP攝(she)(she)像(xiang)(xiang)機(ji)也很(hen)方便。據(ju)筆者使(shi)(shi)用經驗，使(shi)(shi)用CMOS圖(tu)像(xiang)(xiang)傳感(gan)(gan)器(qi)的(de)(de)(de)攝(she)(she)像(xiang)(xiang)機(ji)只(zhi)要不經常(chang)在低照度下(xia)工作，完全可(ke)以代替使(shi)(shi)用CCD圖(tu)像(xiang)(xiang)傳感(gan)(gan)器(qi)的(de)(de)(de)攝(she)(she)像(xiang)(xiang)機(ji)，價(jia)格便宜(yi)，功耗(hao)、體積也小。由于IP攝(she)(she)像(xiang)(xiang)機(ji)增加了視頻(pin)壓(ya)縮與網絡傳輸(shu)部分，其散熱上(shang)對比模擬(ni)攝(she)(she)像(xiang)(xiang)機(ji)有(you)更(geng)高要求；

3、合理(li)分(fen)(fen)配網(wang)段：大規模部署IP攝(she)(she)像(xiang)機對于(yu)IPV4網(wang)絡有網(wang)段分(fen)(fen)配問題，一個(ge)網(wang)段最多容納254臺攝(she)(she)像(xiang)機，超過了(le)需跨網(wang)段，增加了(le)網(wang)絡設置的復(fu)雜程度(du)，可通過NVR分(fen)(fen)段管(guan)理(li)IP攝(she)(she)像(xiang)機來(lai)解決這個(ge)問題。比(bi)如(ru)，中南財經政(zheng)法大學武(wu)漢學院(yuan)正(zheng)在(zai)建的黃(huang)家湖新(xin)校區，將新(xin)裝IP攝(she)(she)像(xiang)機1000臺左右，打算(suan)按地域(yu)劃分(fen)(fen)為(wei)10個(ge)區域(yu)來(lai)管(guan)理(li)，每(mei)個(ge)區域(yu)劃分(fen)(fen)一個(ge)網(wang)段，配置一臺NVR，通過監(jian)控管(guan)理(li)平臺管(guan)理(li)；

4、分(fen)(fen)布與(yu)集(ji)中(zhong)式存(cun)儲(chu)(chu)(chu)靈活(huo)配(pei)置(zhi)：大規(gui)模部署IP攝(she)像(xiang)機集(ji)中(zhong)存(cun)儲(chu)(chu)(chu)對網絡(luo)的(de)(de)(de)壓力也是(shi)一個問題，網絡(luo)視頻監控(kong)(kong)系(xi)統本就是(shi)一個很靈活(huo)的(de)(de)(de)系(xi)統，建議(yi)分(fen)(fen)布式存(cun)儲(chu)(chu)(chu)與(yu)集(ji)中(zhong)式存(cun)儲(chu)(chu)(chu)按(an)需靈活(huo)配(pei)置(zhi)，如(ru)：道(dao)路監控(kong)(kong)、重(zhong)(zhong)要出入(ru)口可集(ji)中(zhong)存(cun)儲(chu)(chu)(chu)，樓宇監控(kong)(kong)可分(fen)(fen)布存(cun)儲(chu)(chu)(chu)，也可設定計劃任務(wu)，利(li)用晚間網絡(luo)空閑(xian)期把(ba)分(fen)(fen)布存(cun)儲(chu)(chu)(chu)的(de)(de)(de)重(zhong)(zhong)要錄像(xiang)，同(tong)步到集(ji)中(zhong)存(cun)儲(chu)(chu)(chu)中(zhong)來(lai)。不(bu)過筆者認(ren)為，目前利(li)用虛擬存(cun)儲(chu)(chu)(chu)技術，組建云存(cun)儲(chu)(chu)(chu)平(ping)臺(tai)才是(shi)網絡(luo)監控(kong)(kong)系(xi)統解(jie)決(jue)存(cun)儲(chu)(chu)(chu)問題的(de)(de)(de)發展(zhan)方向(xiang)。