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慶陽無線對講系統有什么優點?

2022-11-23 閱讀 82586

由(you)于(yu)在(zai)(zai)戶外、室內等區(qu)域(yu),無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統的(de)信(xin)(xin)號(hao)強度較弱(ruo),而且采用(yong)(yong)(yong)頻率調(diao)制(zhi)技術(如 MHZ、 NMR、 BSI等)產(chan)生(sheng)(sheng)的(de)信(xin)(xin)號(hao)傳(chuan)輸時(shi)延大,傳(chuan)輸距(ju)離遠(yuan)。因此(ci)有(you)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統不適合在(zai)(zai)戶外環境使(shi)(shi)(shi)用(yong)(yong)(yong),特別是在(zai)(zai)冬天及(ji)低風速季節使(shi)(shi)(shi)用(yong)(yong)(yong)。雖然無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統也有(you)著不錯的(de)效果。但由(you)于(yu)系(xi)統工(gong)作時(shi)會(hui)有(you)一定(ding)的(de)干擾(rao),使(shi)(shi)(shi)對(dui)(dui)講(jiang)(jiang)(jiang)效果下(xia)降,另外在(zai)(zai)信(xin)(xin)號(hao)較弱(ruo)時(shi)對(dui)(dui)用(yong)(yong)(yong)戶語音(yin)(yin)產(chan)生(sheng)(sheng)了(le)影響。特別是在(zai)(zai)人員復雜、通信(xin)(xin)距(ju)離較短或(huo)需要(yao)較長時(shi)間使(shi)(shi)(shi)用(yong)(yong)(yong)時(shi)。因此(ci),更需要(yao)有(you)一個可靠的(de)無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統提供與有(you)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統一樣的(de)語音(yin)(yin)信(xin)(xin)息與控制(zhi)。無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統具有(you)很高的(de)靈(ling)活性,它能夠(gou)滿足現場中所有(you)環境使(shi)(shi)(shi)用(yong)(yong)(yong)需求并(bing)能隨(sui)(sui)時(shi)切換(如在(zai)(zai)野外、戶外電話等),用(yong)(yong)(yong)戶可以在(zai)(zai)任何地點使(shi)(shi)(shi)用(yong)(yong)(yong)、隨(sui)(sui)時(shi)、隨(sui)(sui)地進行通訊。使(shi)(shi)(shi)用(yong)(yong)(yong)方便(bian)、節省成本、節約費用(yong)(yong)(yong)。下(xia)面我們(men)來了(le)解一下(xia)無(wu)線(xian)對(dui)(dui)講(jiang)(jiang)(jiang)系(xi)統它主要(yao)是什么優點?

1.性(xing)能穩定(ding),可靠性(xing)高

在相(xiang)同無(wu)線(xian)(xian)(xian)傳輸距離下(xia),無(wu)線(xian)(xian)(xian)傳輸信號(hao)(hao)更穩定由于使(shi)用了功(gong)率放(fang)大器來對(dui)無(wu)線(xian)(xian)(xian)信號(hao)(hao)進行壓縮和放(fang)大,使(shi)無(wu)線(xian)(xian)(xian)信號(hao)(hao)更加穩定可(ke)靠(kao)。無(wu)線(xian)(xian)(xian)信號(hao)(hao)在弱電磁環境下(xia)也能保(bao)(bao)持較好(hao)的性(xing)(xing)(xing)能。無(wu)線(xian)(xian)(xian)對(dui)講(jiang)系統(tong)(tong)(tong)具有(you)發(fa)射(she)(she)功(gong)率小(xiao)、抗(kang)千(qian)擾(rao)(rao)能力強(與(yu)有(you)線(xian)(xian)(xian)對(dui)講(jiang)系統(tong)(tong)(tong)比較)和抗(kang)電磁干擾(rao)(rao)能力強(與(yu)有(you)線(xian)(xian)(xian)對(dui)講(jiang)系統(tong)(tong)(tong)比較)的特點。無(wu)線(xian)(xian)(xian)對(dui)講(jiang)系統(tong)(tong)(tong)發(fa)射(she)(she)信號(hao)(hao)在發(fa)射(she)(she)前和發(fa)射(she)(she)后均能保(bao)(bao)持良好(hao)的性(xing)(xing)(xing)能,使(shi)用過程中,發(fa)射(she)(she)信號(hao)(hao)與(yu)接收信號(hao)(hao)完全(quan)不(bu)受任(ren)何千(qian)擾(rao)(rao),可(ke)保(bao)(bao)持很好(hao)的穩定性(xing)(xing)(xing),具有(you)良好(hao)的抗(kang)千(qian)擾(rao)(rao)性(xing)(xing)(xing)和抗(kang)低頻干擾(rao)(rao)能力,即使(shi)在惡劣(lie)的環境下(xia)也能保(bao)(bao)持較好(hao)的性(xing)(xing)(xing)能。因此無(wu)線(xian)(xian)(xian)系統(tong)(tong)(tong)有(you)較高的可(ke)靠(kao)性(xing)(xing)(xing)。

2.功耗(hao)小(xiao)、不(bu)受天氣、濕度的影響(xiang)

無(wu)線(xian)對(dui)(dui)講(jiang)系(xi)統在不同的(de)環(huan)境(jing)中,無(wu)線(xian)通(tong)(tong)信(xin)設(she)備和有線(xian)通(tong)(tong)信(xin)設(she)備一樣都要進行電(dian)(dian)(dian)能(neng)的(de)消耗(hao)。當(dang)環(huan)境(jing)溫度(du)(du)在-40°C以下時(shi),無(wu)線(xian)通(tong)(tong)信(xin)設(she)備需要每(mei)(mei)天(tian)(tian)工(gong)(gong)作(zuo)8小時(shi)左右(you);當(dang)環(huan)境(jing)溫度(du)(du)為-20°C時(shi),每(mei)(mei)天(tian)(tian)工(gong)(gong)作(zuo)8小時(shi)左右(you);當(dang)環(huan)境(jing)溫度(du)(du)為-30°C時(shi),每(mei)(mei)天(tian)(tian)工(gong)(gong)作(zuo)4小時(shi)左右(you)。目(mu)前市場(chang)上常見的(de)無(wu)線(xian)對(dui)(dui)講(jiang)系(xi)統有兩種(zhong)(zhong)電(dian)(dian)(dian)源輸入方式,一種(zhong)(zhong)是(shi)電(dian)(dian)(dian)源輸入,另(ling)一種(zhong)(zhong)是(shi)電(dian)(dian)(dian)源輸出。從這(zhe)兩種(zhong)(zhong)方式對(dui)(dui)系(xi)統的(de)功(gong)(gong)耗(hao)來(lai)看,電(dian)(dian)(dian)源輸入方式的(de)功(gong)(gong)耗(hao)更(geng)大一些,但是(shi)功(gong)(gong)耗(hao)很(hen)小。并且設(she)備的(de)工(gong)(gong)作(zuo)環(huan)境(jing)不同,對(dui)(dui)電(dian)(dian)(dian)池的(de)需求量也不同,所以功(gong)(gong)耗(hao)也不同。

3信號不受干擾

在(zai)(zai)一(yi)些(xie)有(you)(you)干(gan)擾(rao)(rao)(rao)(rao)的(de)地(di)方,例如(ru)野外(wai)、機場、工廠等,一(yi)般采(cai)(cai)用分(fen)(fen)頻(pin)(pin)(pin)方式。分(fen)(fen)頻(pin)(pin)(pin)方式的(de)抗干(gan)擾(rao)(rao)(rao)(rao)能力(li)不(bu)強,其(qi)抗干(gan)擾(rao)(rao)(rao)(rao)能力(li)主要取決(jue)于(yu)射(she)(she)頻(pin)(pin)(pin)功率(lv)(lv)的(de)大(da)(da)小。分(fen)(fen)頻(pin)(pin)(pin)技術的(de)功率(lv)(lv)一(yi)般是50dB在(zai)(zai)50dB左右時(shi)(shi)(shi)(shi),其(qi)抗干(gan)擾(rao)(rao)(rao)(rao)能力(li)強。但由于(yu)分(fen)(fen)頻(pin)(pin)(pin)的(de)干(gan)擾(rao)(rao)(rao)(rao)與(yu)噪聲(主要是周邊噪聲)具有(you)(you)很(hen)強的(de)互通性,當分(fen)(fen)頻(pin)(pin)(pin)發射(she)(she)的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)超過(guo)50dB時(shi)(shi)(shi)(shi),其(qi)抗千(qian)擾(rao)(rao)(rao)(rao)能力(li)就會減弱。另外(wai),在(zai)(zai)一(yi)些(xie)有(you)(you)噪音的(de)環境中(zhong)使(shi)(shi)用分(fen)(fen)頻(pin)(pin)(pin)技術,會使(shi)(shi)分(fen)(fen)頻(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)無(wu)法到(dao)達(da)發射(she)(she)端的(de)接收機或(huo)(huo)者造(zao)成(cheng)發射(she)(she)端信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)與(yu)接收端信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)糟合而(er)造(zao)成(cheng)分(fen)(fen)頻(pin)(pin)(pin)或(huo)(huo)干(gan)擾(rao)(rao)(rao)(rao)(例如(ru)在(zai)(zai)使(shi)(shi)用室外(wai)電話(hua)時(shi)(shi)(shi)(shi)) 。而(er)采(cai)(cai)用分(fen)(fen)頻(pin)(pin)(pin)技術的(de)無(wu)線(xian)對(dui)講(jiang)系(xi)統(tong)由于(yu)發射(she)(she)功率(lv)(lv)小,分(fen)(fen)頻(pin)(pin)(pin)后(hou)的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)強度比有(you)(you)線(xian)對(dui)講(jiang)系(xi)統(tong)高很(hen)多(在(zai)(zai)實際使(shi)(shi)用中(zhong)分(fen)(fen)頻(pin)(pin)(pin)設備一(yi)般可(ke)(ke)以將系(xi)統(tong)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)分(fen)(fen)頻(pin)(pin)(pin)到(dao)50dB以上),信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)不(bu)受干(gan)擾(rao)(rao)(rao)(rao)。如(ru)果采(cai)(cai)用分(fen)(fen)頻(pin)(pin)(pin)技術,需要在(zai)(zai)較大(da)(da)的(de)回(hui)波功率(lv)(lv)下才能實現(xian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)分(fen)(fen)頻(pin)(pin)(pin)工作(如(ru)分(fen)(fen)頻(pin)(pin)(pin)器(qi)發射(she)(she)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)與(yu)接收信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)重疊時(shi)(shi)(shi)(shi)產生的(de)千(qian)擾(rao)(rao)(rao)(rao))和發送信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)強度降低(di)(同頻(pin)(pin)(pin)帶內的(de)兩只天線(xian)對(dui)同一(yi)信(xin)(xin)(xin)(xin)(xin)道(dao)傳(chuan)輸的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)強度基本一(yi)致);如(ru)果采(cai)(cai)用混響技術,則可(ke)(ke)以實現(xian)對(dui)無(wu)線(xian)信(xin)(xin)(xin)(xin)(xin)號(hao)(hao)干(gan)擾(rao)(rao)(rao)(rao)的(de)抑制或(huo)(huo)降低(di)。

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