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蘇州無線對講系統有什么優點?
由(you)于(yu)在(zai)戶(hu)外(wai)(wai)、室內等(deng)(deng)(deng)區域,無(wu)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)的(de)信(xin)號(hao)強度較(jiao)弱(ruo),而且采用(yong)(yong)(yong)頻率調制技術(如 MHZ、 NMR、 BSI等(deng)(deng)(deng))產(chan)生的(de)信(xin)號(hao)傳輸時(shi)延(yan)大(da),傳輸距(ju)離遠(yuan)。因此有(you)(you)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)不適(shi)合在(zai)戶(hu)外(wai)(wai)環境使(shi)(shi)用(yong)(yong)(yong),特別是(shi)在(zai)冬天及(ji)低風(feng)速季(ji)節(jie)使(shi)(shi)用(yong)(yong)(yong)。雖然無(wu)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)也有(you)(you)著不錯的(de)效果。但由(you)于(yu)系(xi)統(tong)(tong)工(gong)作時(shi)會有(you)(you)一(yi)定的(de)干擾,使(shi)(shi)對(dui)(dui)講(jiang)(jiang)效果下降,另外(wai)(wai)在(zai)信(xin)號(hao)較(jiao)弱(ruo)時(shi)對(dui)(dui)用(yong)(yong)(yong)戶(hu)語音產(chan)生了影響。特別是(shi)在(zai)人員復(fu)雜、通(tong)信(xin)距(ju)離較(jiao)短或需(xu)(xu)要(yao)較(jiao)長時(shi)間使(shi)(shi)用(yong)(yong)(yong)時(shi)。因此,更需(xu)(xu)要(yao)有(you)(you)一(yi)個可(ke)靠的(de)無(wu)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)提(ti)供與(yu)有(you)(you)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)一(yi)樣的(de)語音信(xin)息與(yu)控制。無(wu)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)具有(you)(you)很高的(de)靈(ling)活性,它(ta)能夠滿足現場中所有(you)(you)環境使(shi)(shi)用(yong)(yong)(yong)需(xu)(xu)求并能隨(sui)時(shi)切換(如在(zai)野外(wai)(wai)、戶(hu)外(wai)(wai)電話等(deng)(deng)(deng)),用(yong)(yong)(yong)戶(hu)可(ke)以在(zai)任何地點(dian)使(shi)(shi)用(yong)(yong)(yong)、隨(sui)時(shi)、隨(sui)地進行通(tong)訊。使(shi)(shi)用(yong)(yong)(yong)方便、節(jie)省成本(ben)、節(jie)約(yue)費(fei)用(yong)(yong)(yong)。下面(mian)我(wo)們來了解一(yi)下無(wu)線(xian)(xian)對(dui)(dui)講(jiang)(jiang)系(xi)統(tong)(tong)它(ta)主(zhu)要(yao)是(shi)什么優(you)點(dian)?
1.性能(neng)穩(wen)定(ding),可靠性高
在相同無線(xian)(xian)(xian)(xian)(xian)傳輸(shu)距(ju)離下,無線(xian)(xian)(xian)(xian)(xian)傳輸(shu)信(xin)(xin)號更穩定(ding)(ding)(ding)由于使(shi)用了(le)功率放大(da)器來對(dui)無線(xian)(xian)(xian)(xian)(xian)信(xin)(xin)號進行壓(ya)縮和(he)放大(da),使(shi)無線(xian)(xian)(xian)(xian)(xian)信(xin)(xin)號更加(jia)穩定(ding)(ding)(ding)可(ke)靠。無線(xian)(xian)(xian)(xian)(xian)信(xin)(xin)號在弱電(dian)磁(ci)環境下也能(neng)保持(chi)(chi)較(jiao)好(hao)的(de)(de)(de)性(xing)能(neng)。無線(xian)(xian)(xian)(xian)(xian)對(dui)講系統(tong)具有(you)發(fa)(fa)射(she)(she)功率小(xiao)、抗千(qian)擾(rao)能(neng)力(li)強(與有(you)線(xian)(xian)(xian)(xian)(xian)對(dui)講系統(tong)比較(jiao))和(he)抗電(dian)磁(ci)干擾(rao)能(neng)力(li)強(與有(you)線(xian)(xian)(xian)(xian)(xian)對(dui)講系統(tong)比較(jiao))的(de)(de)(de)特點(dian)。無線(xian)(xian)(xian)(xian)(xian)對(dui)講系統(tong)發(fa)(fa)射(she)(she)信(xin)(xin)號在發(fa)(fa)射(she)(she)前和(he)發(fa)(fa)射(she)(she)后均能(neng)保持(chi)(chi)良好(hao)的(de)(de)(de)性(xing)能(neng),使(shi)用過程中,發(fa)(fa)射(she)(she)信(xin)(xin)號與接收信(xin)(xin)號完全不受任何千(qian)擾(rao),可(ke)保持(chi)(chi)很好(hao)的(de)(de)(de)穩定(ding)(ding)(ding)性(xing),具有(you)良好(hao)的(de)(de)(de)抗千(qian)擾(rao)性(xing)和(he)抗低頻干擾(rao)能(neng)力(li),即使(shi)在惡劣的(de)(de)(de)環境下也能(neng)保持(chi)(chi)較(jiao)好(hao)的(de)(de)(de)性(xing)能(neng)。因此無線(xian)(xian)(xian)(xian)(xian)系統(tong)有(you)較(jiao)高的(de)(de)(de)可(ke)靠性(xing)。
2.功(gong)耗(hao)小、不受天氣、濕(shi)度的(de)影響
無(wu)線對講系統在不同(tong)的(de)環境中,無(wu)線通信設備(bei)(bei)和有線通信設備(bei)(bei)一(yi)(yi)(yi)樣都要(yao)進(jin)行(xing)電(dian)(dian)(dian)能的(de)消耗(hao)。當環境溫度在-40°C以(yi)下時,無(wu)線通信設備(bei)(bei)需要(yao)每(mei)天工作8小(xiao)時左(zuo)右;當環境溫度為-20°C時,每(mei)天工作8小(xiao)時左(zuo)右;當環境溫度為-30°C時,每(mei)天工作4小(xiao)時左(zuo)右。目前(qian)市場上常見的(de)無(wu)線對講系統有兩種(zhong)電(dian)(dian)(dian)源輸(shu)入(ru)方式(shi),一(yi)(yi)(yi)種(zhong)是電(dian)(dian)(dian)源輸(shu)入(ru),另一(yi)(yi)(yi)種(zhong)是電(dian)(dian)(dian)源輸(shu)出。從這兩種(zhong)方式(shi)對系統的(de)功耗(hao)來(lai)看,電(dian)(dian)(dian)源輸(shu)入(ru)方式(shi)的(de)功耗(hao)更(geng)大一(yi)(yi)(yi)些,但是功耗(hao)很小(xiao)。并且設備(bei)(bei)的(de)工作環境不同(tong),對電(dian)(dian)(dian)池的(de)需求量(liang)也不同(tong),所(suo)以(yi)功耗(hao)也不同(tong)。
3信號不受干擾
在一(yi)(yi)些有干(gan)(gan)擾(rao)(rao)的(de)地方(fang),例如(ru)(ru)野外、機(ji)(ji)場、工廠等,一(yi)(yi)般(ban)采(cai)(cai)用分頻(pin)(pin)(pin)(pin)方(fang)式。分頻(pin)(pin)(pin)(pin)方(fang)式的(de)抗干(gan)(gan)擾(rao)(rao)能(neng)力不(bu)強(qiang)(qiang),其(qi)抗干(gan)(gan)擾(rao)(rao)能(neng)力主(zhu)(zhu)要取決于(yu)(yu)射頻(pin)(pin)(pin)(pin)功率(lv)的(de)大(da)小(xiao)。分頻(pin)(pin)(pin)(pin)技術(shu)的(de)功率(lv)一(yi)(yi)般(ban)是50dB在50dB左右時,其(qi)抗干(gan)(gan)擾(rao)(rao)能(neng)力強(qiang)(qiang)。但(dan)由于(yu)(yu)分頻(pin)(pin)(pin)(pin)的(de)干(gan)(gan)擾(rao)(rao)與噪聲(主(zhu)(zhu)要是周邊噪聲)具有很強(qiang)(qiang)的(de)互通性(xing),當分頻(pin)(pin)(pin)(pin)發射的(de)信(xin)(xin)號(hao)(hao)(hao)超過50dB時,其(qi)抗千(qian)擾(rao)(rao)能(neng)力就會(hui)減弱。另(ling)外,在一(yi)(yi)些有噪音的(de)環境中(zhong)使(shi)用分頻(pin)(pin)(pin)(pin)技術(shu),會(hui)使(shi)分頻(pin)(pin)(pin)(pin)信(xin)(xin)號(hao)(hao)(hao)無法到達發射端(duan)的(de)接收(shou)機(ji)(ji)或者造成發射端(duan)信(xin)(xin)號(hao)(hao)(hao)與接收(shou)端(duan)信(xin)(xin)號(hao)(hao)(hao)的(de)糟合而造成分頻(pin)(pin)(pin)(pin)或干(gan)(gan)擾(rao)(rao)(例如(ru)(ru)在使(shi)用室外電話時) 。而采(cai)(cai)用分頻(pin)(pin)(pin)(pin)技術(shu)的(de)無線(xian)(xian)對講系(xi)(xi)統由于(yu)(yu)發射功率(lv)小(xiao),分頻(pin)(pin)(pin)(pin)后的(de)信(xin)(xin)號(hao)(hao)(hao)強(qiang)(qiang)度比有線(xian)(xian)對講系(xi)(xi)統高(gao)很多(duo)(在實(shi)際(ji)使(shi)用中(zhong)分頻(pin)(pin)(pin)(pin)設備一(yi)(yi)般(ban)可以將(jiang)系(xi)(xi)統信(xin)(xin)號(hao)(hao)(hao)分頻(pin)(pin)(pin)(pin)到50dB以上(shang)),信(xin)(xin)號(hao)(hao)(hao)不(bu)受干(gan)(gan)擾(rao)(rao)。如(ru)(ru)果(guo)采(cai)(cai)用分頻(pin)(pin)(pin)(pin)技術(shu),需(xu)要在較大(da)的(de)回波功率(lv)下(xia)才能(neng)實(shi)現(xian)信(xin)(xin)號(hao)(hao)(hao)的(de)分頻(pin)(pin)(pin)(pin)工作(如(ru)(ru)分頻(pin)(pin)(pin)(pin)器發射信(xin)(xin)號(hao)(hao)(hao)與接收(shou)信(xin)(xin)號(hao)(hao)(hao)重(zhong)疊時產生的(de)千(qian)擾(rao)(rao))和發送信(xin)(xin)號(hao)(hao)(hao)強(qiang)(qiang)度降(jiang)低(di)(同(tong)頻(pin)(pin)(pin)(pin)帶內的(de)兩只天線(xian)(xian)對同(tong)一(yi)(yi)信(xin)(xin)道傳(chuan)輸的(de)信(xin)(xin)號(hao)(hao)(hao)強(qiang)(qiang)度基本一(yi)(yi)致);如(ru)(ru)果(guo)采(cai)(cai)用混響技術(shu),則可以實(shi)現(xian)對無線(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)干(gan)(gan)擾(rao)(rao)的(de)抑制(zhi)或降(jiang)低(di)。
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