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行業新聞

常州無線對講系統有什么優點?

2022-11-23 閱讀 82723

由于在(zai)(zai)戶(hu)外、室內等區域,無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)的信號強度較(jiao)弱,而且采(cai)用(yong)(yong)頻(pin)率(lv)調(diao)制技(ji)術(如 MHZ、 NMR、 BSI等)產(chan)生(sheng)的信號傳(chuan)輸(shu)時(shi)(shi)延大,傳(chuan)輸(shu)距(ju)離遠(yuan)。因此有(you)(you)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)不適合在(zai)(zai)戶(hu)外環境使(shi)(shi)(shi)(shi)用(yong)(yong),特別(bie)是(shi)在(zai)(zai)冬(dong)天及低風速(su)季(ji)節(jie)使(shi)(shi)(shi)(shi)用(yong)(yong)。雖(sui)然無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)也(ye)有(you)(you)著不錯的效果。但由于系(xi)(xi)(xi)統(tong)工作時(shi)(shi)會有(you)(you)一(yi)定的干(gan)擾,使(shi)(shi)(shi)(shi)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)效果下(xia)降,另外在(zai)(zai)信號較(jiao)弱時(shi)(shi)對(dui)(dui)用(yong)(yong)戶(hu)語(yu)音產(chan)生(sheng)了(le)影(ying)響(xiang)。特別(bie)是(shi)在(zai)(zai)人(ren)員復雜、通信距(ju)離較(jiao)短(duan)或需要較(jiao)長時(shi)(shi)間使(shi)(shi)(shi)(shi)用(yong)(yong)時(shi)(shi)。因此,更需要有(you)(you)一(yi)個(ge)可靠(kao)的無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)提供(gong)與有(you)(you)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)一(yi)樣的語(yu)音信息(xi)與控制。無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)具有(you)(you)很高的靈活性,它(ta)能夠(gou)滿(man)足現場中所有(you)(you)環境使(shi)(shi)(shi)(shi)用(yong)(yong)需求并(bing)能隨(sui)(sui)時(shi)(shi)切換(如在(zai)(zai)野外、戶(hu)外電話等),用(yong)(yong)戶(hu)可以在(zai)(zai)任何地點使(shi)(shi)(shi)(shi)用(yong)(yong)、隨(sui)(sui)時(shi)(shi)、隨(sui)(sui)地進行通訊。使(shi)(shi)(shi)(shi)用(yong)(yong)方(fang)便、節(jie)省成本、節(jie)約費用(yong)(yong)。下(xia)面我們來了(le)解一(yi)下(xia)無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)(jiang)系(xi)(xi)(xi)統(tong)它(ta)主要是(shi)什么(me)優點?

1.性(xing)(xing)能穩定,可(ke)靠(kao)性(xing)(xing)高

在相同無(wu)(wu)(wu)(wu)線(xian)傳(chuan)輸距離下(xia)(xia),無(wu)(wu)(wu)(wu)線(xian)傳(chuan)輸信(xin)(xin)(xin)號(hao)(hao)更穩定(ding)(ding)由于使(shi)(shi)用了功(gong)率(lv)放大器來對無(wu)(wu)(wu)(wu)線(xian)信(xin)(xin)(xin)號(hao)(hao)進行壓(ya)縮和(he)放大,使(shi)(shi)無(wu)(wu)(wu)(wu)線(xian)信(xin)(xin)(xin)號(hao)(hao)更加穩定(ding)(ding)可靠。無(wu)(wu)(wu)(wu)線(xian)信(xin)(xin)(xin)號(hao)(hao)在弱電磁環境下(xia)(xia)也(ye)(ye)能(neng)(neng)保持(chi)較(jiao)好(hao)的(de)(de)性能(neng)(neng)。無(wu)(wu)(wu)(wu)線(xian)對講(jiang)系(xi)(xi)統具(ju)有(you)發(fa)(fa)射(she)功(gong)率(lv)小、抗(kang)千擾(rao)(rao)能(neng)(neng)力(li)強(qiang)(與(yu)有(you)線(xian)對講(jiang)系(xi)(xi)統比(bi)(bi)較(jiao))和(he)抗(kang)電磁干擾(rao)(rao)能(neng)(neng)力(li)強(qiang)(與(yu)有(you)線(xian)對講(jiang)系(xi)(xi)統比(bi)(bi)較(jiao))的(de)(de)特點(dian)。無(wu)(wu)(wu)(wu)線(xian)對講(jiang)系(xi)(xi)統發(fa)(fa)射(she)信(xin)(xin)(xin)號(hao)(hao)在發(fa)(fa)射(she)前(qian)和(he)發(fa)(fa)射(she)后(hou)均(jun)能(neng)(neng)保持(chi)良好(hao)的(de)(de)性能(neng)(neng),使(shi)(shi)用過程中,發(fa)(fa)射(she)信(xin)(xin)(xin)號(hao)(hao)與(yu)接收信(xin)(xin)(xin)號(hao)(hao)完全不受(shou)任(ren)何(he)千擾(rao)(rao),可保持(chi)很好(hao)的(de)(de)穩定(ding)(ding)性,具(ju)有(you)良好(hao)的(de)(de)抗(kang)千擾(rao)(rao)性和(he)抗(kang)低頻干擾(rao)(rao)能(neng)(neng)力(li),即使(shi)(shi)在惡劣的(de)(de)環境下(xia)(xia)也(ye)(ye)能(neng)(neng)保持(chi)較(jiao)好(hao)的(de)(de)性能(neng)(neng)。因(yin)此(ci)無(wu)(wu)(wu)(wu)線(xian)系(xi)(xi)統有(you)較(jiao)高(gao)的(de)(de)可靠性。

2.功(gong)耗小、不受天氣、濕度(du)的影(ying)響(xiang)

無線(xian)對(dui)講(jiang)系統在不(bu)同(tong)(tong)的環(huan)境(jing)中,無線(xian)通信設(she)(she)備(bei)和有線(xian)通信設(she)(she)備(bei)一(yi)樣都要進(jin)行電(dian)能的消耗(hao)。當環(huan)境(jing)溫度(du)在-40°C以下時,無線(xian)通信設(she)(she)備(bei)需要每天(tian)工(gong)作(zuo)8小(xiao)時左右;當環(huan)境(jing)溫度(du)為-20°C時,每天(tian)工(gong)作(zuo)8小(xiao)時左右;當環(huan)境(jing)溫度(du)為-30°C時,每天(tian)工(gong)作(zuo)4小(xiao)時左右。目前市場上常見的無線(xian)對(dui)講(jiang)系統有兩種(zhong)電(dian)源(yuan)輸(shu)入方(fang)式(shi)(shi),一(yi)種(zhong)是(shi)電(dian)源(yuan)輸(shu)入,另一(yi)種(zhong)是(shi)電(dian)源(yuan)輸(shu)出。從這兩種(zhong)方(fang)式(shi)(shi)對(dui)系統的功耗(hao)來看,電(dian)源(yuan)輸(shu)入方(fang)式(shi)(shi)的功耗(hao)更大一(yi)些,但(dan)是(shi)功耗(hao)很小(xiao)。并且設(she)(she)備(bei)的工(gong)作(zuo)環(huan)境(jing)不(bu)同(tong)(tong),對(dui)電(dian)池的需求(qiu)量(liang)也不(bu)同(tong)(tong),所(suo)以功耗(hao)也不(bu)同(tong)(tong)。

3信號不受干擾

在一(yi)些(xie)有(you)(you)干(gan)(gan)(gan)擾(rao)(rao)的(de)地方,例如(ru)野外、機場、工(gong)廠等(deng),一(yi)般采用(yong)分(fen)頻(pin)(pin)(pin)方式。分(fen)頻(pin)(pin)(pin)方式的(de)抗干(gan)(gan)(gan)擾(rao)(rao)能力(li)(li)不強(qiang),其(qi)(qi)(qi)抗干(gan)(gan)(gan)擾(rao)(rao)能力(li)(li)主要取決于射(she)頻(pin)(pin)(pin)功(gong)率(lv)的(de)大(da)小。分(fen)頻(pin)(pin)(pin)技(ji)術的(de)功(gong)率(lv)一(yi)般是(shi)50dB在50dB左右(you)時,其(qi)(qi)(qi)抗干(gan)(gan)(gan)擾(rao)(rao)能力(li)(li)強(qiang)。但由(you)于分(fen)頻(pin)(pin)(pin)的(de)干(gan)(gan)(gan)擾(rao)(rao)與(yu)噪(zao)聲(主要是(shi)周邊(bian)噪(zao)聲)具有(you)(you)很(hen)強(qiang)的(de)互通性,當分(fen)頻(pin)(pin)(pin)發(fa)(fa)射(she)的(de)信(xin)(xin)號(hao)超(chao)過50dB時,其(qi)(qi)(qi)抗千(qian)擾(rao)(rao)能力(li)(li)就會(hui)減弱。另(ling)外,在一(yi)些(xie)有(you)(you)噪(zao)音(yin)的(de)環境(jing)中(zhong)(zhong)使(shi)用(yong)分(fen)頻(pin)(pin)(pin)技(ji)術,會(hui)使(shi)分(fen)頻(pin)(pin)(pin)信(xin)(xin)號(hao)無法到達發(fa)(fa)射(she)端的(de)接收(shou)機或者造成發(fa)(fa)射(she)端信(xin)(xin)號(hao)與(yu)接收(shou)端信(xin)(xin)號(hao)的(de)糟(zao)合而(er)造成分(fen)頻(pin)(pin)(pin)或干(gan)(gan)(gan)擾(rao)(rao)(例如(ru)在使(shi)用(yong)室外電(dian)話時) 。而(er)采用(yong)分(fen)頻(pin)(pin)(pin)技(ji)術的(de)無線(xian)對講(jiang)系(xi)統(tong)(tong)由(you)于發(fa)(fa)射(she)功(gong)率(lv)小,分(fen)頻(pin)(pin)(pin)后(hou)的(de)信(xin)(xin)號(hao)強(qiang)度比有(you)(you)線(xian)對講(jiang)系(xi)統(tong)(tong)高很(hen)多(在實(shi)(shi)際使(shi)用(yong)中(zhong)(zhong)分(fen)頻(pin)(pin)(pin)設(she)備(bei)一(yi)般可(ke)以將系(xi)統(tong)(tong)信(xin)(xin)號(hao)分(fen)頻(pin)(pin)(pin)到50dB以上),信(xin)(xin)號(hao)不受干(gan)(gan)(gan)擾(rao)(rao)。如(ru)果(guo)采用(yong)分(fen)頻(pin)(pin)(pin)技(ji)術,需要在較大(da)的(de)回(hui)波(bo)功(gong)率(lv)下才(cai)能實(shi)(shi)現(xian)信(xin)(xin)號(hao)的(de)分(fen)頻(pin)(pin)(pin)工(gong)作(如(ru)分(fen)頻(pin)(pin)(pin)器發(fa)(fa)射(she)信(xin)(xin)號(hao)與(yu)接收(shou)信(xin)(xin)號(hao)重疊時產生的(de)千(qian)擾(rao)(rao))和發(fa)(fa)送信(xin)(xin)號(hao)強(qiang)度降低(同頻(pin)(pin)(pin)帶內的(de)兩只天(tian)線(xian)對同一(yi)信(xin)(xin)道傳輸的(de)信(xin)(xin)號(hao)強(qiang)度基本一(yi)致);如(ru)果(guo)采用(yong)混響技(ji)術,則可(ke)以實(shi)(shi)現(xian)對無線(xian)信(xin)(xin)號(hao)干(gan)(gan)(gan)擾(rao)(rao)的(de)抑制(zhi)或降低。

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