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陽江無線對講系統有什么優點?

2022-11-23 閱讀 82595

由于(yu)在戶(hu)外(wai)(wai)、室內等區域(yu),無(wu)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)的(de)(de)(de)(de)信(xin)(xin)號強度較弱,而且采用(yong)(yong)(yong)頻率調制(zhi)技術(如(ru) MHZ、 NMR、 BSI等)產生(sheng)的(de)(de)(de)(de)信(xin)(xin)號傳(chuan)輸時(shi)(shi)延大,傳(chuan)輸距離遠。因(yin)(yin)此有(you)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)不適合在戶(hu)外(wai)(wai)環境(jing)使(shi)(shi)用(yong)(yong)(yong),特(te)別是(shi)在冬(dong)天及低風速季節(jie)使(shi)(shi)用(yong)(yong)(yong)。雖然無(wu)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)也有(you)著不錯的(de)(de)(de)(de)效果。但(dan)由于(yu)系(xi)(xi)統(tong)工作時(shi)(shi)會有(you)一(yi)定(ding)的(de)(de)(de)(de)干(gan)擾,使(shi)(shi)對(dui)講(jiang)(jiang)效果下降,另外(wai)(wai)在信(xin)(xin)號較弱時(shi)(shi)對(dui)用(yong)(yong)(yong)戶(hu)語音(yin)(yin)產生(sheng)了(le)影(ying)響(xiang)。特(te)別是(shi)在人員復雜、通信(xin)(xin)距離較短(duan)或需(xu)(xu)要(yao)較長時(shi)(shi)間使(shi)(shi)用(yong)(yong)(yong)時(shi)(shi)。因(yin)(yin)此,更需(xu)(xu)要(yao)有(you)一(yi)個可靠的(de)(de)(de)(de)無(wu)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)提供與(yu)有(you)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)一(yi)樣的(de)(de)(de)(de)語音(yin)(yin)信(xin)(xin)息與(yu)控制(zhi)。無(wu)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)具有(you)很(hen)高的(de)(de)(de)(de)靈活性,它(ta)(ta)能(neng)夠(gou)滿(man)足現場中所有(you)環境(jing)使(shi)(shi)用(yong)(yong)(yong)需(xu)(xu)求并能(neng)隨時(shi)(shi)切(qie)換(如(ru)在野(ye)外(wai)(wai)、戶(hu)外(wai)(wai)電話等),用(yong)(yong)(yong)戶(hu)可以在任(ren)何地點使(shi)(shi)用(yong)(yong)(yong)、隨時(shi)(shi)、隨地進行通訊(xun)。使(shi)(shi)用(yong)(yong)(yong)方(fang)便、節(jie)省成(cheng)本(ben)、節(jie)約費用(yong)(yong)(yong)。下面我們來了(le)解一(yi)下無(wu)線(xian)(xian)對(dui)講(jiang)(jiang)系(xi)(xi)統(tong)它(ta)(ta)主要(yao)是(shi)什么優點?

1.性能穩定,可靠(kao)性高(gao)

在(zai)相同無(wu)(wu)線(xian)(xian)(xian)傳輸(shu)距離(li)下,無(wu)(wu)線(xian)(xian)(xian)傳輸(shu)信(xin)號(hao)(hao)(hao)(hao)(hao)更穩(wen)(wen)定由于使(shi)用(yong)了功率(lv)放大器(qi)來對無(wu)(wu)線(xian)(xian)(xian)信(xin)號(hao)(hao)(hao)(hao)(hao)進行(xing)壓縮(suo)和(he)放大,使(shi)無(wu)(wu)線(xian)(xian)(xian)信(xin)號(hao)(hao)(hao)(hao)(hao)更加(jia)穩(wen)(wen)定可(ke)(ke)靠。無(wu)(wu)線(xian)(xian)(xian)信(xin)號(hao)(hao)(hao)(hao)(hao)在(zai)弱(ruo)電(dian)磁環(huan)境下也能(neng)(neng)保持較好的(de)(de)性(xing)(xing)能(neng)(neng)。無(wu)(wu)線(xian)(xian)(xian)對講系(xi)統(tong)具有發(fa)射(she)功率(lv)小(xiao)、抗(kang)(kang)千擾能(neng)(neng)力強(與(yu)有線(xian)(xian)(xian)對講系(xi)統(tong)比較)和(he)抗(kang)(kang)電(dian)磁干擾能(neng)(neng)力強(與(yu)有線(xian)(xian)(xian)對講系(xi)統(tong)比較)的(de)(de)特點(dian)。無(wu)(wu)線(xian)(xian)(xian)對講系(xi)統(tong)發(fa)射(she)信(xin)號(hao)(hao)(hao)(hao)(hao)在(zai)發(fa)射(she)前和(he)發(fa)射(she)后(hou)均能(neng)(neng)保持良好的(de)(de)性(xing)(xing)能(neng)(neng),使(shi)用(yong)過程中,發(fa)射(she)信(xin)號(hao)(hao)(hao)(hao)(hao)與(yu)接收信(xin)號(hao)(hao)(hao)(hao)(hao)完全不受任何千擾,可(ke)(ke)保持很好的(de)(de)穩(wen)(wen)定性(xing)(xing),具有良好的(de)(de)抗(kang)(kang)千擾性(xing)(xing)和(he)抗(kang)(kang)低頻干擾能(neng)(neng)力,即使(shi)在(zai)惡劣的(de)(de)環(huan)境下也能(neng)(neng)保持較好的(de)(de)性(xing)(xing)能(neng)(neng)。因此無(wu)(wu)線(xian)(xian)(xian)系(xi)統(tong)有較高的(de)(de)可(ke)(ke)靠性(xing)(xing)。

2.功(gong)耗小(xiao)、不(bu)受(shou)天氣、濕度的影響

無線(xian)(xian)對(dui)講系(xi)統在不同(tong)的環境中,無線(xian)(xian)通信設(she)(she)(she)備(bei)和有(you)(you)線(xian)(xian)通信設(she)(she)(she)備(bei)一(yi)樣都要進行電能的消耗(hao)(hao)。當環境溫度在-40°C以下時(shi),無線(xian)(xian)通信設(she)(she)(she)備(bei)需(xu)要每天工作(zuo)8小(xiao)時(shi)左(zuo)(zuo)右(you);當環境溫度為(wei)(wei)-20°C時(shi),每天工作(zuo)8小(xiao)時(shi)左(zuo)(zuo)右(you);當環境溫度為(wei)(wei)-30°C時(shi),每天工作(zuo)4小(xiao)時(shi)左(zuo)(zuo)右(you)。目前市場上常見的無線(xian)(xian)對(dui)講系(xi)統有(you)(you)兩(liang)(liang)種(zhong)電源輸(shu)入(ru)方(fang)式(shi),一(yi)種(zhong)是(shi)電源輸(shu)入(ru),另一(yi)種(zhong)是(shi)電源輸(shu)出。從這兩(liang)(liang)種(zhong)方(fang)式(shi)對(dui)系(xi)統的功耗(hao)(hao)來看,電源輸(shu)入(ru)方(fang)式(shi)的功耗(hao)(hao)更大(da)一(yi)些(xie),但是(shi)功耗(hao)(hao)很小(xiao)。并且設(she)(she)(she)備(bei)的工作(zuo)環境不同(tong),對(dui)電池的需(xu)求量也不同(tong),所以功耗(hao)(hao)也不同(tong)。

3信號不受干擾

在(zai)(zai)(zai)(zai)一(yi)些有(you)干(gan)(gan)擾(rao)的(de)(de)地(di)方(fang)(fang),例(li)(li)如(ru)野外、機場、工(gong)廠等,一(yi)般采(cai)(cai)用(yong)分(fen)頻(pin)(pin)方(fang)(fang)式。分(fen)頻(pin)(pin)方(fang)(fang)式的(de)(de)抗干(gan)(gan)擾(rao)能(neng)力(li)不強(qiang),其(qi)抗干(gan)(gan)擾(rao)能(neng)力(li)主(zhu)要取決于(yu)(yu)射(she)頻(pin)(pin)功(gong)率(lv)(lv)的(de)(de)大小(xiao)。分(fen)頻(pin)(pin)技(ji)(ji)(ji)術(shu)的(de)(de)功(gong)率(lv)(lv)一(yi)般是50dB在(zai)(zai)(zai)(zai)50dB左右(you)時(shi),其(qi)抗干(gan)(gan)擾(rao)能(neng)力(li)強(qiang)。但由于(yu)(yu)分(fen)頻(pin)(pin)的(de)(de)干(gan)(gan)擾(rao)與(yu)(yu)噪聲(sheng)(sheng)(主(zhu)要是周邊噪聲(sheng)(sheng))具(ju)有(you)很強(qiang)的(de)(de)互通性,當分(fen)頻(pin)(pin)發射(she)的(de)(de)信(xin)(xin)號(hao)超(chao)過50dB時(shi),其(qi)抗千(qian)(qian)擾(rao)能(neng)力(li)就會(hui)減弱。另外,在(zai)(zai)(zai)(zai)一(yi)些有(you)噪音的(de)(de)環(huan)境中使(shi)用(yong)分(fen)頻(pin)(pin)技(ji)(ji)(ji)術(shu),會(hui)使(shi)分(fen)頻(pin)(pin)信(xin)(xin)號(hao)無(wu)(wu)法到達發射(she)端的(de)(de)接(jie)收(shou)機或(huo)者造成(cheng)發射(she)端信(xin)(xin)號(hao)與(yu)(yu)接(jie)收(shou)端信(xin)(xin)號(hao)的(de)(de)糟合而(er)造成(cheng)分(fen)頻(pin)(pin)或(huo)干(gan)(gan)擾(rao)(例(li)(li)如(ru)在(zai)(zai)(zai)(zai)使(shi)用(yong)室(shi)外電話時(shi)) 。而(er)采(cai)(cai)用(yong)分(fen)頻(pin)(pin)技(ji)(ji)(ji)術(shu)的(de)(de)無(wu)(wu)線對(dui)講系統由于(yu)(yu)發射(she)功(gong)率(lv)(lv)小(xiao),分(fen)頻(pin)(pin)后的(de)(de)信(xin)(xin)號(hao)強(qiang)度(du)比(bi)有(you)線對(dui)講系統高很多(在(zai)(zai)(zai)(zai)實際使(shi)用(yong)中分(fen)頻(pin)(pin)設備一(yi)般可以將系統信(xin)(xin)號(hao)分(fen)頻(pin)(pin)到50dB以上),信(xin)(xin)號(hao)不受干(gan)(gan)擾(rao)。如(ru)果(guo)采(cai)(cai)用(yong)分(fen)頻(pin)(pin)技(ji)(ji)(ji)術(shu),需要在(zai)(zai)(zai)(zai)較大的(de)(de)回波(bo)功(gong)率(lv)(lv)下才能(neng)實現(xian)信(xin)(xin)號(hao)的(de)(de)分(fen)頻(pin)(pin)工(gong)作(如(ru)分(fen)頻(pin)(pin)器發射(she)信(xin)(xin)號(hao)與(yu)(yu)接(jie)收(shou)信(xin)(xin)號(hao)重疊時(shi)產生的(de)(de)千(qian)(qian)擾(rao))和發送信(xin)(xin)號(hao)強(qiang)度(du)降低(同(tong)頻(pin)(pin)帶內的(de)(de)兩只(zhi)天線對(dui)同(tong)一(yi)信(xin)(xin)道(dao)傳輸的(de)(de)信(xin)(xin)號(hao)強(qiang)度(du)基本一(yi)致);如(ru)果(guo)采(cai)(cai)用(yong)混響技(ji)(ji)(ji)術(shu),則(ze)可以實現(xian)對(dui)無(wu)(wu)線信(xin)(xin)號(hao)干(gan)(gan)擾(rao)的(de)(de)抑制或(huo)降低。

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