電源作為整個(ge)安防系統的(de)動力(li)來源，消費者(zhe)在選(xuan)擇(ze)時應該重(zhong)之又重(zhong)，如果只是出于節(jie)省(sheng)成本的(de)目(mu)的(de)，隨意選(xuan)購(gou)安防監控(kong)電源，就會為(wei)以后安防(fang)系統(tong)的正常工作(zuo)埋下隱患(huan)，在選購安防(fang)電(dian)源

選購安防監控(kong)電源時(shi)應(ying)注重以下要點(dian)

一、明確(que)用途，正確(que)選擇

首(shou)先，確定搭配使(shi)用(yong)的(de)(de)監(jian)控(kong)攝像頭(tou)的(de)(de)輸(shu)(shu)入電(dian)(dian)(dian)壓(ya)(ya)大小、輸(shu)(shu)入電(dian)(dian)(dian)流類型。一般(ban)來說(shuo)，監(jian)控(kong)攝像頭(tou)的(de)(de)輸(shu)(shu)入電(dian)(dian)(dian)壓(ya)(ya)多為12V或24V，輸(shu)(shu)入電(dian)(dian)(dian)流類型多為直(zhi)流電(dian)(dian)(dian)，少(shao)數球(qiu)機輸(shu)(shu)入電(dian)(dian)(dian)流為交流電(dian)(dian)(dian)，部分攝像機交流電(dian)(dian)(dian)、直(zhi)流電(dian)(dian)(dian)通用(yong)。

其次(ci)，確定供電方(fang)(fang)式(shi)(shi)。目前主(zhu)要供電方(fang)(fang)式(shi)(shi)包(bao)括獨立(li)供電方(fang)(fang)式(shi)(shi)和(he)集中(zhong)供電方(fang)(fang)式(shi)(shi)。集中(zhong)供電存在(zai)較(jiao)多弊端，例如集中(zhong)供電模(mo)式(shi)(shi)下的監控攝像(xiang)機，會因為(wei)距離(li)的不(bu)同而導致實際輸入電源的不(bu)同。在(zai)此不(bu)一(yi)(yi)一(yi)(yi)細述(shu)。

確定(ding)監控攝(she)像(xiang)頭所需的(de)輸(shu)入電(dian)(dian)壓大(da)小、輸(shu)入電(dian)(dian)流類型后，則根據監控攝(she)像(xiang)頭的(de)額度功率選(xuan)擇合(he)適的(de)電(dian)(dian)源(yuan)安(an)數，一般來說(shuo)，選(xuan)個(ge)安(an)數稍高(gao)的(de)安(an)防(fang)監控電(dian)(dian)源(yuan)最為(wei)合(he)適。安(an)數過(guo)低，帶不(bu)起監控攝(she)像(xiang)頭或者影(ying)響(xiang)監控攝(she)像(xiang)頭的(de)壽命。安(an)防(fang)監控電(dian)(dian)源(yuan)安(an)數越(yue)高(gao)，其售價(jia)也(ye)高(gao)，若選(xuan)擇安(an)數過(guo)高(gao)的(de)安(an)防(fang)監控電(dian)(dian)源(yuan)，則增加不(bu)必要的(de)成本支出。

二(er)、了解使(shi)用環境及電源(yuan)的防護功能

監控(kong)(kong)攝像(xiang)頭的(de)使用環境(jing)主要(yao)包括室(shi)內(nei)及室(shi)外(wai)(wai)。安(an)裝在室(shi)外(wai)(wai)的(de)監控(kong)(kong)攝像(xiang)頭尤(you)其要(yao)注(zhu)重安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)的(de)防(fang)(fang)(fang)(fang)水功(gong)能(neng)(neng)。除了(le)防(fang)(fang)(fang)(fang)水功(gong)能(neng)(neng)外(wai)(wai)，還(huan)要(yao)注(zhu)重安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)的(de)防(fang)(fang)(fang)(fang)雷功(gong)能(neng)(neng)、散(san)(san)熱性(xing)(xing)能(neng)(neng)。安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)的(de)散(san)(san)熱性(xing)(xing)能(neng)(neng)尤(you)為重要(yao)。一般來說，攝像(xiang)頭基本都是24小(xiao)時(shi)(shi)不(bu)間(jian)斷(duan)工(gong)作，這意味著安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)同時(shi)(shi)也是24小(xiao)時(shi)(shi)不(bu)間(jian)斷(duan)運(yun)行。安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian) 源(yuan)(yuan)(yuan)的(de)散(san)(san)熱性(xing)(xing)能(neng)(neng)越(yue)好(hao)，其電(dian)(dian)子元器件(jian)的(de)工(gong)作壽(shou)命越(yue)長(chang)，這就保證了(le)監控(kong)(kong)系(xi)統(tong)持(chi)續(xu)工(gong)作，同時(shi)(shi)也降低了(le)監控(kong)(kong)系(xi)統(tong)的(de)運(yun)行成本。安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)的(de)散(san)(san)熱性(xing)(xing)能(neng)(neng)與其電(dian)(dian)路設(she)計(ji)有(you)很大關系(xi)。電(dian)(dian)路設(she)計(ji)越(yue)是合理的(de)安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)，其轉換效率越(yue)高，其自身散(san)(san)發的(de)熱量越(yue)少。此(ci)外(wai)(wai)，安(an)防(fang)(fang)(fang)(fang)監控(kong)(kong)電(dian)(dian)源(yuan)(yuan)(yuan)的(de)散(san)(san)熱性(xing)(xing)能(neng)(neng)還(huan)跟其外(wai)(wai)殼有(you)很大關系(xi)，金(jin)屬(shu)外(wai)(wai)殼比塑(su)料(liao)外(wai)(wai)殼導熱性(xing)(xing)能(neng)(neng)更(geng)佳(jia)。

三、合(he)理預算，勿因小失大

目(mu)前(qian)安(an)防市(shi)場存在大(da)量偷(tou)工減料的電(dian)源(yuan)(yuan)，甚至(zhi)部分不良廠家用大(da)量用回收料生(sheng)產電(dian)源(yuan)(yuan)。這些劣質(zhi)電(dian)源(yuan)(yuan)的售價(jia)往往低(di)得不合常理。從外觀(guan)上看(kan)(kan)(kan)，跟(gen)優質(zhi)電(dian)源(yuan)(yuan)沒有(you)太大(da)差異。然而(er)拆(chai)開外殼，從線路板的布(bu)線、元器(qi)件便可清楚看(kan)(kan)(kan)出劣質(zhi)電(dian)源(yuan)(yuan)的低(di)價(jia)緣(yuan)由(you)。建(jian)議(yi)顧(gu)客在選購電(dian)源(yuan)(yuan)前(qian)進行(xing)相關測試，如果條(tiao)件允許，最(zui)好打開外殼，仔細(xi)查看(kan)(kan)(kan)其(qi)內部結(jie)構。

只有選擇(ze)了合適的(de)安(an)防監(jian)控電源，才能為整個安(an)防監(jian)控系統提供穩固(gu)的(de)保障。