電子圍欄系統如何防止入侵的?
傳統(tong)(tong)的紅外對(dui)射、泄(xie)漏電纜或微(wei)波(bo)等(deng)系統(tong)(tong),只具有(you)報警功能(neng)(neng)(neng)(neng),而沒(mei)有(you)阻(zu)擋(dang)功能(neng)(neng)(neng)(neng)。入侵者往往能(neng)(neng)(neng)(neng)毫無阻(zu)擋(dang)地跨越警戒線(xian)。也就是(shi)說(shuo),當(dang)有(you)人(ren)入侵時,在系統(tong)(tong)發生(sheng)報警之(zhi)前,就可能(neng)(neng)(neng)(neng)已進入安防(fang)區域之(zhi)內。這使事件處(chu)理可能(neng)(neng)(neng)(neng)復(fu)雜化。
電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)系統(tong)在(zai)防區的周邊架設了一道電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)。如(ru)果有人(ren)企圖入(ru)侵,首先看到掛在(zai)圍(wei)(wei)(wei)欄(lan)(lan)上的"小心電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)"警示(shi)牌,給(gei)予心理上的威懾感。如(ru)果企圖跨(kua)越(yue)(yue)當觸(chu)及(ji)電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)時,便給(gei)予電(dian)擊,使之退縮(suo)離開,且不(bu)敢再(zai)次(ci)觸(chu)及(ji)。如(ru)果強行攀(pan)登,則系統(tong)發出報警。再(zai)則,電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)采用了帶(dai)有彈性的掛線桿。當入(ru)侵者(zhe)(zhe)企圖跨(kua)越(yue)(yue)時,撓性的圍(wei)(wei)(wei)欄(lan)(lan)不(bu)給(gei)予支持(chi)力,使入(ru)侵者(zhe)(zhe)無法(fa)跨(kua)越(yue)(yue)。這就是電(dian)子(zi)圍(wei)(wei)(wei)欄(lan)(lan)的有效(xiao)阻擋功能。
●脈(mo)(mo)沖電子圍(wei)欄系(xi)統(tong)的(de)電脈(mo)(mo)沖對人身安(an)(an)全是否有保(bao)障(zhang)?脈(mo)(mo)沖電子圍(wei)欄系(xi)統(tong)雖然脈(mo)(mo)沖電壓達6000-10000V,但是脈(mo)(mo)沖的(de)重復頻率極低(di),每(mei)秒僅1次。脈(mo)(mo)沖的(de)持(chi)續時間≤0.1秒。脈(mo)(mo)沖最大能(neng)量(liang)5焦耳,脈(mo)(mo)沖最大電量(liang)2.5毫(hao)科倫。由此可見,ypj2009kjhkijh其(qi)(qi)能(neng)量(liang)很小(xiao),不會(hui)傷人,僅給予入侵者較(jiao)難受的(de)警告,動搖其(qi)(qi)攀越圍(wei)欄的(de)能(neng)力與動機(ji),達到了安(an)(an)全阻(zu)擋的(de)目的(de)。
●脈沖電子(zi)圍(wei)欄(lan)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)功能是怎樣實現的(de)(de)?傳(chuan)統(tong)(tong)的(de)(de)紅外對(dui)射報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)(xi)(xi)統(tong)(tong),只要有(you)(you)人或(huo)物(wu)經過警(jing)(jing)(jing)(jing)戒線(xian)(xian)(xian)時(shi),就(jiu)會(hui)發(fa)生報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)。貓或(huo)狗等(deng)(deng)動物(wu)經過時(shi),照樣會(hui)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)。因此,不(bu)(bu)該(gai)報(bao)(bao)(bao)(bao)的(de)(de)也報(bao)(bao)(bao)(bao)了。如(ru)(ru)果(guo)遇到暴雨、濃霧等(deng)(deng)惡劣天氣,系(xi)(xi)(xi)統(tong)(tong)失效,該(gai)報(bao)(bao)(bao)(bao)的(de)(de)又不(bu)(bu)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)。新型的(de)(de)脈沖電子(zi)圍(wei)欄(lan)系(xi)(xi)(xi)統(tong)(tong)具(ju)有(you)(you)區分偶然觸及(ji)和強(qiang)行侵入的(de)(de)功能,如(ru)(ru)果(guo)有(you)(you)人不(bu)(bu)當(dang)心而觸及(ji)圍(wei)欄(lan),或(huo)其它物(wu)體(如(ru)(ru)樹枝)瞬間碰及(ji)圍(wei)欄(lan),因為這不(bu)(bu)屬于真(zhen)正的(de)(de)入侵,系(xi)(xi)(xi)統(tong)(tong)具(ju)有(you)(you)鑒別能力而不(bu)(bu)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)。只有(you)(you)當(dang)入侵者強(qiang)行入侵,攀越電子(zi)圍(wei)欄(lan)時(shi),造成(cheng)系(xi)(xi)(xi)統(tong)(tong)斷線(xian)(xian)(xian)(開路)或(huo)持續碰線(xian)(xian)(xian)(短路)時(shi),會(hui)發(fa)出報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)。因此,脈沖電子(zi)圍(wei)欄(lan)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)具(ju)有(you)(you)智能功能,該(gai)報(bao)(bao)(bao)(bao)則報(bao)(bao)(bao)(bao),不(bu)(bu)該(gai)報(bao)(bao)(bao)(bao)則不(bu)(bu)報(bao)(bao)(bao)(bao)。誤報(bao)(bao)(bao)(bao)率極低。
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