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宿遷無線對講系統有什么優點?

2022-11-23 閱讀 82774

由于在(zai)(zai)戶(hu)(hu)外(wai)、室內等(deng)區域(yu),無線(xian)對(dui)(dui)講系統(tong)(tong)(tong)的(de)(de)信(xin)(xin)(xin)號(hao)強度較(jiao)弱(ruo),而且采用(yong)(yong)頻率調(diao)制技術(如 MHZ、 NMR、 BSI等(deng))產(chan)生(sheng)的(de)(de)信(xin)(xin)(xin)號(hao)傳輸時(shi)延(yan)大,傳輸距離(li)遠。因(yin)此(ci)有(you)(you)線(xian)對(dui)(dui)講系統(tong)(tong)(tong)不適合在(zai)(zai)戶(hu)(hu)外(wai)環境(jing)使(shi)用(yong)(yong),特(te)別是(shi)在(zai)(zai)冬天(tian)及低風速季節使(shi)用(yong)(yong)。雖然無線(xian)對(dui)(dui)講系統(tong)(tong)(tong)也(ye)有(you)(you)著不錯的(de)(de)效果。但由于系統(tong)(tong)(tong)工(gong)作時(shi)會有(you)(you)一(yi)(yi)定的(de)(de)干(gan)擾,使(shi)對(dui)(dui)講效果下降,另外(wai)在(zai)(zai)信(xin)(xin)(xin)號(hao)較(jiao)弱(ruo)時(shi)對(dui)(dui)用(yong)(yong)戶(hu)(hu)語音產(chan)生(sheng)了影響(xiang)。特(te)別是(shi)在(zai)(zai)人員(yuan)復雜、通(tong)信(xin)(xin)(xin)距離(li)較(jiao)短(duan)或需要(yao)較(jiao)長時(shi)間(jian)使(shi)用(yong)(yong)時(shi)。因(yin)此(ci),更(geng)需要(yao)有(you)(you)一(yi)(yi)個(ge)可靠的(de)(de)無線(xian)對(dui)(dui)講系統(tong)(tong)(tong)提供與有(you)(you)線(xian)對(dui)(dui)講系統(tong)(tong)(tong)一(yi)(yi)樣(yang)的(de)(de)語音信(xin)(xin)(xin)息(xi)與控制。無線(xian)對(dui)(dui)講系統(tong)(tong)(tong)具有(you)(you)很高的(de)(de)靈活(huo)性,它能(neng)夠滿足現(xian)場中(zhong)所有(you)(you)環境(jing)使(shi)用(yong)(yong)需求并(bing)能(neng)隨時(shi)切換(如在(zai)(zai)野外(wai)、戶(hu)(hu)外(wai)電話等(deng)),用(yong)(yong)戶(hu)(hu)可以在(zai)(zai)任何地(di)點使(shi)用(yong)(yong)、隨時(shi)、隨地(di)進行通(tong)訊。使(shi)用(yong)(yong)方(fang)便、節省(sheng)成本、節約費用(yong)(yong)。下面我們來了解(jie)一(yi)(yi)下無線(xian)對(dui)(dui)講系統(tong)(tong)(tong)它主(zhu)要(yao)是(shi)什(shen)么優點?

1.性能穩定,可靠性高

在(zai)(zai)相同無(wu)線(xian)傳輸距離下(xia),無(wu)線(xian)傳輸信(xin)號更(geng)(geng)穩定由于(yu)使(shi)用了功率放大器來對無(wu)線(xian)信(xin)號進行壓縮和(he)(he)放大,使(shi)無(wu)線(xian)信(xin)號更(geng)(geng)加穩定可靠(kao)。無(wu)線(xian)信(xin)號在(zai)(zai)弱(ruo)電(dian)磁環(huan)境下(xia)也能(neng)(neng)(neng)(neng)(neng)(neng)保(bao)持(chi)較(jiao)(jiao)(jiao)好(hao)(hao)的(de)(de)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)。無(wu)線(xian)對講(jiang)系(xi)統具(ju)有(you)發(fa)射(she)(she)功率小、抗(kang)(kang)千(qian)(qian)擾(rao)能(neng)(neng)(neng)(neng)(neng)(neng)力(li)強(qiang)(與有(you)線(xian)對講(jiang)系(xi)統比較(jiao)(jiao)(jiao))和(he)(he)抗(kang)(kang)電(dian)磁干擾(rao)能(neng)(neng)(neng)(neng)(neng)(neng)力(li)強(qiang)(與有(you)線(xian)對講(jiang)系(xi)統比較(jiao)(jiao)(jiao))的(de)(de)特(te)點。無(wu)線(xian)對講(jiang)系(xi)統發(fa)射(she)(she)信(xin)號在(zai)(zai)發(fa)射(she)(she)前和(he)(he)發(fa)射(she)(she)后(hou)均(jun)能(neng)(neng)(neng)(neng)(neng)(neng)保(bao)持(chi)良好(hao)(hao)的(de)(de)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng),使(shi)用過程中,發(fa)射(she)(she)信(xin)號與接收信(xin)號完全不受任(ren)何千(qian)(qian)擾(rao),可保(bao)持(chi)很(hen)好(hao)(hao)的(de)(de)穩定性(xing),具(ju)有(you)良好(hao)(hao)的(de)(de)抗(kang)(kang)千(qian)(qian)擾(rao)性(xing)和(he)(he)抗(kang)(kang)低頻干擾(rao)能(neng)(neng)(neng)(neng)(neng)(neng)力(li),即使(shi)在(zai)(zai)惡劣的(de)(de)環(huan)境下(xia)也能(neng)(neng)(neng)(neng)(neng)(neng)保(bao)持(chi)較(jiao)(jiao)(jiao)好(hao)(hao)的(de)(de)性(xing)能(neng)(neng)(neng)(neng)(neng)(neng)。因(yin)此無(wu)線(xian)系(xi)統有(you)較(jiao)(jiao)(jiao)高的(de)(de)可靠(kao)性(xing)。

2.功耗(hao)小、不受天氣、濕度的影(ying)響

無線(xian)對講(jiang)系統在不同的(de)(de)(de)(de)環(huan)境(jing)中,無線(xian)通信(xin)(xin)設備和(he)有(you)線(xian)通信(xin)(xin)設備一樣(yang)都要(yao)進行電(dian)(dian)能的(de)(de)(de)(de)消耗(hao)(hao)。當(dang)環(huan)境(jing)溫度(du)在-40°C以下時(shi),無線(xian)通信(xin)(xin)設備需要(yao)每天(tian)工(gong)作(zuo)8小時(shi)左右;當(dang)環(huan)境(jing)溫度(du)為-20°C時(shi),每天(tian)工(gong)作(zuo)8小時(shi)左右;當(dang)環(huan)境(jing)溫度(du)為-30°C時(shi),每天(tian)工(gong)作(zuo)4小時(shi)左右。目前市場上常見的(de)(de)(de)(de)無線(xian)對講(jiang)系統有(you)兩種電(dian)(dian)源輸入方(fang)式(shi),一種是(shi)電(dian)(dian)源輸入,另一種是(shi)電(dian)(dian)源輸出。從這兩種方(fang)式(shi)對系統的(de)(de)(de)(de)功(gong)耗(hao)(hao)來(lai)看,電(dian)(dian)源輸入方(fang)式(shi)的(de)(de)(de)(de)功(gong)耗(hao)(hao)更大一些(xie),但是(shi)功(gong)耗(hao)(hao)很小。并且設備的(de)(de)(de)(de)工(gong)作(zuo)環(huan)境(jing)不同,對電(dian)(dian)池的(de)(de)(de)(de)需求量也不同,所以功(gong)耗(hao)(hao)也不同。

3信號不受干擾

在(zai)一些(xie)有干(gan)擾(rao)的(de)(de)(de)地方,例(li)如(ru)野外(wai)、機場、工(gong)廠等,一般采(cai)用(yong)(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)方式(shi)(shi)。分(fen)頻(pin)(pin)(pin)(pin)方式(shi)(shi)的(de)(de)(de)抗干(gan)擾(rao)能力(li)(li)不強(qiang)(qiang)(qiang),其(qi)抗干(gan)擾(rao)能力(li)(li)主要(yao)取決于射(she)頻(pin)(pin)(pin)(pin)功率的(de)(de)(de)大(da)小。分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)(shu)(shu)的(de)(de)(de)功率一般是(shi)50dB在(zai)50dB左右時,其(qi)抗干(gan)擾(rao)能力(li)(li)強(qiang)(qiang)(qiang)。但由于分(fen)頻(pin)(pin)(pin)(pin)的(de)(de)(de)干(gan)擾(rao)與(yu)(yu)噪(zao)聲(sheng)(主要(yao)是(shi)周邊噪(zao)聲(sheng))具有很(hen)強(qiang)(qiang)(qiang)的(de)(de)(de)互通性(xing),當分(fen)頻(pin)(pin)(pin)(pin)發(fa)射(she)的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)超(chao)過(guo)50dB時,其(qi)抗千擾(rao)能力(li)(li)就會(hui)減弱。另(ling)外(wai),在(zai)一些(xie)有噪(zao)音(yin)的(de)(de)(de)環境中使(shi)用(yong)(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)(shu)(shu),會(hui)使(shi)分(fen)頻(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)無法(fa)到(dao)達(da)發(fa)射(she)端(duan)的(de)(de)(de)接(jie)收(shou)機或者造成發(fa)射(she)端(duan)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)與(yu)(yu)接(jie)收(shou)端(duan)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)糟(zao)合(he)而造成分(fen)頻(pin)(pin)(pin)(pin)或干(gan)擾(rao)(例(li)如(ru)在(zai)使(shi)用(yong)(yong)(yong)室外(wai)電話時) 。而采(cai)用(yong)(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)(shu)(shu)的(de)(de)(de)無線(xian)對(dui)(dui)講系(xi)統由于發(fa)射(she)功率小,分(fen)頻(pin)(pin)(pin)(pin)后的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)比(bi)有線(xian)對(dui)(dui)講系(xi)統高很(hen)多(在(zai)實(shi)(shi)際使(shi)用(yong)(yong)(yong)中分(fen)頻(pin)(pin)(pin)(pin)設備一般可(ke)以將(jiang)系(xi)統信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)分(fen)頻(pin)(pin)(pin)(pin)到(dao)50dB以上),信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)不受干(gan)擾(rao)。如(ru)果采(cai)用(yong)(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)(shu)(shu),需要(yao)在(zai)較大(da)的(de)(de)(de)回波功率下才能實(shi)(shi)現信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)分(fen)頻(pin)(pin)(pin)(pin)工(gong)作(如(ru)分(fen)頻(pin)(pin)(pin)(pin)器發(fa)射(she)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)與(yu)(yu)接(jie)收(shou)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)重(zhong)疊時產生(sheng)的(de)(de)(de)千擾(rao))和發(fa)送信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)降(jiang)(jiang)低(同頻(pin)(pin)(pin)(pin)帶內的(de)(de)(de)兩只天線(xian)對(dui)(dui)同一信(xin)(xin)(xin)(xin)(xin)道傳輸的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)基本一致);如(ru)果采(cai)用(yong)(yong)(yong)混響技(ji)(ji)術(shu)(shu)(shu),則可(ke)以實(shi)(shi)現對(dui)(dui)無線(xian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)干(gan)擾(rao)的(de)(de)(de)抑制或降(jiang)(jiang)低。

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