工作原理簡介
帶電電纜識別儀的發射(she)(she)機(ji)(ji)和(he)接收(shou)(shou)(shou)機(ji)(ji)采用單(dan)片機(ji)(ji)編(bian)碼(ma)、解碼(ma)技術(shu)(shu)和(he)廣泛應用在通信(xin)(xin)領域里(li)的PSK技術(shu)(shu)。在發射(she)(she)卡(ka)鉗(qian)上發射(she)(she)平均(jun)值為0 的相(xiang)位(wei)編(bian)碼(ma)信(xin)(xin)號(hao)，接收(shou)(shou)(shou)機(ji)(ji)中的單(dan)片機(ji)(ji)對接收(shou)(shou)(shou)的信(xin)(xin)號(hao)經過硬件(jian)(jian)和(he)軟件(jian)(jian)的濾波后，再進(jin)行相(xiang)位(wei)識(shi)(shi)別(bie)(bie)(bie)。將(jiang)(jiang)發射(she)(she)卡(ka)鉗(qian)和(he)接收(shou)(shou)(shou)卡(ka)鉗(qian)的箭頭指向電(dian)(dian)(dian)(dian)纜(lan)終端，當接收(shou)(shou)(shou)機(ji)(ji)卡(ka)鉗(qian)鉗(qian)住某根(gen)電(dian)(dian)(dian)(dian)纜(lan)，接收(shou)(shou)(shou)機(ji)(ji)電(dian)(dian)(dian)(dian)流(liu)表右偏(pian)，同(tong)時伴有聲光指示(shi)。而(er)鉗(qian)住其它的電(dian)(dian)(dian)(dian)纜(lan)，電(dian)(dian)(dian)(dian)流(liu)表左偏(pian)，電(dian)(dian)(dian)(dian)流(liu)方(fang)向與被(bei)識(shi)(shi)別(bie)(bie)(bie)電(dian)(dian)(dian)(dian)纜(lan)的電(dian)(dian)(dian)(dian)流(liu)方(fang)向相(xiang)反(fan)，沒有聲光指示(shi)。這就體現了被(bei)識(shi)(shi)別(bie)(bie)(bie)的目標電(dian)(dian)(dian)(dian)纜(lan)的特(te)性。很(hen)容易將(jiang)(jiang)被(bei)識(shi)(shi)別(bie)(bie)(bie)電(dian)(dian)(dian)(dian)纜(lan)從多根(gen)電(dian)(dian)(dian)(dian)纜(lan)中做出明確(que)判別(bie)(bie)(bie)。又由(you)于被(bei)識(shi)(shi)別(bie)(bie)(bie)電(dian)(dian)(dian)(dian)纜(lan)上的信(xin)(xin)號(hao)電(dian)(dian)(dian)(dian)流(liu)強度(du)全線都是(shi)一(yi)樣(yang)的，接收(shou)(shou)(shou)卡(ka)鉗(qian)在電(dian)(dian)(dian)(dian)纜(lan)沿線所接收(shou)(shou)(shou)到(dao)的電(dian)(dian)(dian)(dian)磁(ci)信(xin)(xin)號(hao)強度(du)一(yi)致，識(shi)(shi)別(bie)(bie)(bie)的電(dian)(dian)(dian)(dian)纜(lan)不受被(bei)識(shi)(shi)別(bie)(bie)(bie)電(dian)(dian)(dian)(dian)纜(lan)長度(du)的限(xian)制。

電(dian)纜(lan)識(shi)別(bie)(bie)儀(yi)(yi)在電(dian)力電(dian)纜(lan)架設(she)、遷移、維(wei)護以及(ji)故(gu)障(zhang)處理(li)中(zhong)(zhong)用來判別(bie)(bie)一束電(dian)纜(lan)中(zhong)(zhong)欲(yu)尋找(zhao)的(de)一根特定的(de)電(dian)纜(lan)；具(ju)有(you)判別(bie)(bie)電(dian)纜(lan)準確、快速、操作簡單、應用范圍廣等特點(dian)。它是電(dian)纜(lan)施(shi)工及(ji)維(wei)護工作中(zhong)(zhong)*的(de)檢測儀(yi)(yi)器。

LYDS-II型帶電電纜識別儀主要特點

本儀(yi)器由電(dian)(dian)纜(lan)(lan)識別發(fa)射(she)機，電(dian)(dian)纜(lan)(lan)識別接(jie)(jie)(jie)收(shou)(shou)機、發(fa)射(she)卡鉗(qian)和(he)接(jie)(jie)(jie)收(shou)(shou)卡鉗(qian)及輸出(chu)信號(hao)連(lian)接(jie)(jie)(jie)線組成。它(ta)具有大(da)(da)功(gong)(gong)率(lv)電(dian)(dian)流脈沖輸出(chu)；現場接(jie)(jie)(jie)收(shou)(shou)信號(hao)特征(zheng)清晰，輕便靈(ling)活，靈(ling)敏度高，能有效(xiao)抑制(zhi)現場工(gong)頻干擾；判斷準確、快速；保護電(dian)(dian)路(lu)可(ke)靠，不怕輸出(chu)短路(lu)；大(da)(da)鉗(qian)口ф125適合各種(zhong)截面積的(de)動(dong)力(li)電(dian)(dian)纜(lan)(lan)；內部具有大(da)(da)功(gong)(gong)率(lv)隔離變(bian)壓器，操作者(zhe)與(yu)市電(dian)(dian)不存在(zai)任何電(dian)(dian)氣上的(de)直接(jie)(jie)(jie)接(jie)(jie)(jie)觸。極大(da)(da)的(de)保證(zheng)了(le)人(ren)身安(an)全。帶(dai)電(dian)(dian)電(dian)(dian)纜(lan)(lan)識別時不需(xu)要(yao)斷開各電(dian)(dian)纜(lan)(lan)兩(liang)端(duan)與(yu)變(bian)配電(dian)(dian)設備間(jian)(jian)的(de)連(lian)接(jie)(jie)(jie)，可(ke)在(zai)電(dian)(dian)纜(lan)(lan)處(chu)于帶(dai)電(dian)(dian)的(de)狀(zhuang)態下(xia)進行在(zai)線識別，提高了(le)識別的(de)效(xiao)率(lv)，大(da)(da)大(da)(da)減(jian)少了(le)由于停電(dian)(dian)所造成的(de)直接(jie)(jie)(jie)和(he)間(jian)(jian)接(jie)(jie)(jie)的(de)經濟損失。

本(ben)儀器的最大特點(dian)是：

1、將(jiang)帶(dai)電識(shi)別和不帶(dai)電識(shi)別功能(neng)合二為一，不僅適合停(ting)運電纜(lan)的(de)(de)識(shi)別與(yu)(yu)判(pan)斷，而且也(ye)適合帶(dai)點電纜(lan)的(de)(de)識(shi)別與(yu)(yu)判(pan)斷，操作(zuo)極其簡單，使用非常(chang)方便。

2、該電纜識別儀與常規的識別儀不同，采用了最新的通信技術，在發射端采用單片機技術對發射信號進行編碼、功率驅動，將信號耦合到電纜上；接收機中的單片機對接收的相位編碼信號解碼和相位識別。根據目標電纜上的信號相位特征的特性將目標電纜從一大束電纜中識別出來。因此工作性能可靠，對超長電纜也能做到準確判別，是一種輕小型、緊湊型、便攜式儀器。適用于各種類型的高低壓動力電纜。

LYDS-II型帶電電纜識別儀性能指標

發射機：

1. 最(zui)大脈沖峰值輸出電流(liu)：20A

2．脈沖重復頻率：1次/2秒

3．電源電壓：AC220V(±10%)

4．重量： 8kg

接收機：

1．接(jie)收機靈敏度： 40dB

2．電(dian)(dian)源：兩(liang)節5號電(dian)(dian)池

3．重量：0.2kg