拉曼(man)散射(she)(she)是(shi)由于(yu)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)分(fen)子(zi)的(de)(de)熱(re)振(zhen)(zhen)動(dong)和(he)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)子(zi)相互作(zuo)用(yong)發生能量交換(huan)而產生的(de)(de)，具體地(di)說，如(ru)果一(yi)部分(fen)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)能轉換(huan)成為(wei)(wei)熱(re)振(zhen)(zhen)動(dong)，那么將(jiang)發出一(yi)個(ge)(ge)(ge)比光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)源(yuan)波長(chang)(chang)更(geng)長(chang)(chang)的(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)，稱(cheng)為(wei)(wei)斯托克(ke)斯光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)（Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)），如(ru)果一(yi)部分(fen)振(zhen)(zhen)動(dong)轉換(huan)成為(wei)(wei)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)能，那么將(jiang)發出一(yi)個(ge)(ge)(ge)比光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)源(yuan)波長(chang)(chang)更(geng)短的(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)，稱(cheng)為(wei)(wei)反斯托克(ke)斯光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)（Anti-Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)）。其中(zhong)Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)強(qiang)度受(shou)溫度的(de)(de)影(ying)響很小，可忽略(lve)不(bu)計，而Anti-Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)的(de)(de)強(qiang)度隨溫度的(de)(de)變(bian)化(hua)而變(bian)化(hua)。Anti-Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)與(yu)Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)的(de)(de)強(qiang)度之比提供了一(yi)個(ge)(ge)(ge)關(guan)于(yu)溫度的(de)(de)函(han)數(shu)關(guan)系(xi)式。光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)在光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)中(zhong)傳輸時(shi)一(yi)部分(fen)拉曼(man)散射(she)(she)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)（后向拉曼(man)散射(she)(she)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)）沿光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)原路返回，被光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)探(tan)測(ce)單元接收。測(ce)溫主機通過測(ce)量背向拉曼(man)散射(she)(she)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)中(zhong)Anti-Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)與(yu)Stokes光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)的(de)(de)強(qiang)度比值的(de)(de)變(bian)化(hua)實現(xian)對(dui)外部溫度變(bian)化(hua)的(de)(de)監測(ce)。在時(shi)域中(zhong)，利用(yong)OTDR技術(shu)，根(gen)據(ju)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)在光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)中(zhong)的(de)(de)傳輸速率和(he)入(ru)射(she)(she)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)與(yu)后向拉曼(man)散射(she)(she)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)之間的(de)(de)時(shi)間差，可以(yi)對(dui)不(bu)同的(de)(de)溫度點進行定位，這(zhe)樣就可以(yi)得(de)到整根(gen)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)沿線上的(de)(de)溫度并精確(que)定位。我們的(de)(de)測(ce)溫光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)銷售(shou)方案，將(jiang)為(wei)(wei)您提供專業的(de)(de)售(shou)前咨詢(xun)、售(shou)中(zhong)服務和(he)售(shou)后支持(chi)。上海哪里有(you)測(ce)溫光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)大概(gai)多少錢(qian)

溫度曲線出現異常l請確認曲線異常的地方是否(fou)為光(guang)纖熔接(jie)點。l請檢查光(guang)纖連(lian)接(jie)頭(tou)。如果光(guang)纖連(lian)接(jie)頭(tou)污染，或(huo)者(zhe)受損(sun)，將影響溫度曲線。

請(qing)查(cha)看(kan)光纖(xian)是否彎折(zhe)。如(ru)果出現彎折(zhe)，請(qing)將光纖(xian)取(qu)直。如(ru)果光纖(xian)取(qu)直后，曲線仍異常，說明(ming)光纖(xian)已損壞，請(qing)更(geng)換光纖(xian)。

光纖(xian)末端一部分沒有(you)測量數據(ju)由于光纖(xian)尾端的端面反(fan)射比較大，會影響(xiang)前端的溫(wen)度測量，因(yin)此扣除尾端5m左右的溫(wen)度測量數據(ju)。

光纖末段(duan)5m加熱沒有報警(jing)理由(you)同(tong)上。光纖尾端(duan)的斷面(mian)反射(she)比較(jiao)大(da)，扣除(chu)了尾端(duan)5m左右(you)的溫度測量數(shu)據。

光(guang)纖(xian)頭(tou)部20m溫(wen)度(du)測量不(bu)準確(que)由于光(guang)纖(xian)頭(tou)部的反射光(guang)比(bi)較大(da)，影響(xiang)頭(tou)部20m范圍內的溫(wen)度(du)測量值，可能造成誤報，因此光(guang)纜布設時需扣除前(qian)段20m，推薦(jian)將頭(tou)部20m盤繞在機(ji)柜內。

插拔光纖(xian)時出現誤報(bao)警(jing)(jing)插拔光纖(xian)時由于長度發(fa)生變(bian)化，可能造成(cheng)溫度測量(liang)異常以及誤報(bao)警(jing)(jing)。因此，若需(xu)插拔光纖(xian)，請先停止測量(liang)。

光纖(xian)斷(duan)(duan)裂(lie)(lie)瞬間(jian)出現誤(wu)報(bao)(bao)警(jing)系統能自動檢測光纖(xian)斷(duan)(duan)裂(lie)(lie)情況，并準確定位(wei)斷(duan)(duan)纖(xian)位(wei)置。由于光纖(xian)長度發生變化，光纖(xian)斷(duan)(duan)裂(lie)(lie)瞬間(jian)可能造成(cheng)溫(wen)度測量異常，并造成(cheng)誤(wu)報(bao)(bao)警(jing)。

電源(yuan)開關已啟(qi)動，主機(ji)不啟(qi)動l請檢(jian)查保(bao)險絲是(shi)否燒壞。l消防電源(yuan)輸出端子的接法是(shi)否正確。ü繼(ji)電器與主機(ji)已連(lian)接，但操(cao)作主機(ji)時，繼(ji)電器不工作請檢(jian)查繼(ji)電器與主機(ji)的連(lian)接是(shi)否正確。貴州什(shen)么是(shi)測(ce)(ce)溫光纖(xian)(xian)施工我們(men)的測(ce)(ce)溫光纖(xian)(xian)銷售方案，將為您提供詳細的培訓和技(ji)術支(zhi)持，確保(bao)您能夠充分利用測(ce)(ce)溫光纖(xian)(xian)的優勢。

系統設置調試：用(yong)戶可以(yi)使(shi)用(yong)測(ce)(ce)溫(wen)(wen)(wen)軟(ruan)件配(pei)置DTS光(guang)纖感溫(wen)(wen)(wen)火災探測(ce)(ce)器主機(ji)(ji)，監控由DTS分布式光(guang)纖測(ce)(ce)溫(wen)(wen)(wen)主機(ji)(ji)產生的溫(wen)(wen)(wen)度數(shu)據(ju)和報(bao)(bao)警并(bing)(bing)記錄主機(ji)(ji)運(yun)行(xing)中(zhong)采(cai)集的數(shu)據(ju)。測(ce)(ce)溫(wen)(wen)(wen)軟(ruan)件剛(gang)開始運(yun)行(xing)時(shi)要求(qiu)使(shi)用(yong)出廠(chang)配(pei)置文(wen)件或(huo)者直接(jie)讀取設備上保存(cun)的參(can)數(shu)，用(yong)戶需要連(lian)接(jie)光(guang)纜，調試并(bing)(bing)校準獲得匹配(pei)當前(qian)光(guang)纜的參(can)數(shu)、并(bing)(bing)設置相應報(bao)(bao)警參(can)數(shu)，之(zhi)后可以(yi)設置為自動測(ce)(ce)量。報(bao)(bao)警信(xin)息可主動顯(xian)示在軟(ruan)件界面的上層(ceng)，并(bing)(bing)保存(cun)到(dao)歷史記錄中(zhong)，供(gong)用(yong)戶查詢。

主(zhu)界面各功能(neng)區(qu)(qu)域說明如下：1.菜(cai)單(dan)欄2.數據和(he)信(xin)息(xi)顯示區(qu)(qu)域3.坐標設定(ding)及標記區(qu)(qu)域4.系(xi)統測量(liang)狀(zhuang)態(tai)及測量(liang)通(tong)道指示區(qu)(qu)域5.安全狀(zhuang)態(tai)區(qu)(qu)域6.通(tong)道選擇區(qu)(qu)域7.（測量(liang)）操(cao)作區(qu)(qu)域8.系(xi)統狀(zhuang)態(tai)信(xin)息(xi)及操(cao)作信(xin)息(xi)區(qu)(qu)域

一、測溫(wen)原(yuan)理：A、激光(guang)器發出一束(shu)激光(guang)，通過耦合器調制(zhi)后(hou)射入測溫(wen)光(guang)纖中；B、光(guang)纖中反(fan)(fan)射回的(de)拉(la)曼散射光(guang)通過光(guang)譜分(fen)離(li)模塊分(fen)解(jie)成(cheng)不同波(bo)長的(de)Stokes反(fan)(fan)射光(guang)和(he)Antistokes反(fan)(fan)射光(guang)。其中Stokes反(fan)(fan)射光(guang)的(de)強(qiang)(qiang)度(du)與(yu)溫(wen)度(du)弱相關；而Antistokes反(fan)(fan)射光(guang)的(de)強(qiang)(qiang)度(du)與(yu)傳(chuan)輸介質的(de)溫(wen)度(du)強(qiang)(qiang)相關。C、通過對兩束(shu)光(guang)信號進行處理和(he)對比計算得出溫(wen)度(du)沿(yan)光(guang)纖的(de)分(fen)布曲線。

二、定(ding)位原理：激光(guang)(guang)器發(fa)出(chu)的(de)脈沖光(guang)(guang)信號在(zai)光(guang)(guang)纖中傳輸(shu)時(shi)(shi)，在(zai)不同(tong)位置產生的(de)后向(xiang)散射光(guang)(guang)沿光(guang)(guang)纖達到探測器的(de)時(shi)(shi)間不同(tong)，將后向(xiang)散射光(guang)(guang)到達探測器與激光(guang)(guang)器發(fa)出(chu)光(guang)(guang)脈沖的(de)時(shi)(shi)間差乘以(yi)光(guang)(guang)在(zai)光(guang)(guang)纖中的(de)傳輸(shu)速度再除以(yi)2，即可得到散射點在(zai)光(guang)(guang)纖上的(de)位置。測溫光(guang)(guang)纖的(de)優勢在(zai)于其(qi)智(zhi)能化程(cheng)度高，可實現遠(yuan)程(cheng)監控和(he)智(zhi)能控制。

分布式(shi)光(guang)(guang)(guang)(guang)(guang)纖測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)系(xi)統主要(yao)由測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)主機、測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)光(guang)(guang)(guang)(guang)(guang)纜組成。測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)光(guang)(guang)(guang)(guang)(guang)纜敷設(she)在(zai)隧(sui)道內(nei)高 壓電(dian)纜表面，每根測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)光(guang)(guang)(guang)(guang)(guang)纜測(ce)(ce)(ce)(ce)量一(yi)根電(dian)纜；測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)光(guang)(guang)(guang)(guang)(guang)纜同時具備信息傳(chuan)輸(shu)功能，可將測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)信 息送至測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)主機。測(ce)(ce)(ce)(ce)溫(wen)(wen)(wen)主機實時監(jian)測(ce)(ce)(ce)(ce)被測(ce)(ce)(ce)(ce)對(dui)象的溫(wen)(wen)(wen)度，一(yi)旦探測(ce)(ce)(ce)(ce)到溫(wen)(wen)(wen)度異常(chang)，立(li)即通(tong)過聲 光(guang)(guang)(guang)(guang)(guang)報警器等(deng)提示運維值班人員(yuan)。

可(ke)靠性高，不存(cun)在監測(ce)(ce)盲區(qu)(qu)，反(fan)應迅速、準確、連續(xu)；內置(zhi)多種接(jie)口，易于(yu)系(xi)統擴展(zhan)與集成，配置(zhi)便捷，可(ke)單(dan)獨編程、授權(quan)配置(zhi)；系(xi)統具(ju)備(bei)實時(shi)在線監測(ce)(ce)電纜表面溫(wen)度(du)的(de)功(gong)(gong)能，具(ju)備(bei)集溫(wen)度(du)測(ce)(ce)量、分區(qu)(qu)設置(zhi)、報警(jing)設置(zhi)、報警(jing)判斷等功(gong)(gong)能于(yu)一體(ti)的(de)集成操作界面。系(xi)統應具(ju)備(bei)定(ding)溫(wen)預警(jing)、報警(jing)和差溫(wen)報警(jing)等功(gong)(gong)能；

系(xi)(xi)(xi)統(tong)(tong)具備系(xi)(xi)(xi)統(tong)(tong)自檢(jian)和異(yi)常溫(wen)(wen)度(du)報警處理功(gong)能(neng)，自檢(jian)出系(xi)(xi)(xi)統(tong)(tong)異(yi)常和溫(wen)(wen)度(du)異(yi)常時，可支持外部(bu)接點發出報警信(xin)號;系(xi)(xi)(xi)統(tong)(tong)具備自動校準(zhun)能(neng)力，防(fang)雷擊(ji)、耐高(gao)壓(ya)、安全性高(gao)，使(shi)用(yong)壽命長；系(xi)(xi)(xi)統(tong)(tong)采用(yong)總線架構，傳感器(qi)可擴展性強；

溫(wen)(wen)度(du)測量、分區(qu)設置(zhi)、報(bao)(bao)警(jing)(jing)(jing)設置(zhi)、報(bao)(bao)警(jing)(jing)(jing)判(pan)斷、報(bao)(bao)警(jing)(jing)(jing)輸出(chu)等工(gong)作均直接由光(guang)纖(xian)(xian)測溫(wen)(wen)主(zhu)機來完(wan)成，中(zhong)間環(huan)節少，報(bao)(bao)警(jing)(jing)(jing)迅速，系統可靠性高；內置(zhi)國際通用(yong)的ModbusTCP協議，可方(fang)便(bian)的與第三(san)方(fang)系統進行(xing)數(shu)據傳(chuan)輸和(he)系統融合。測溫(wen)(wen)光(guang)纖(xian)(xian)的優勢在(zai)于(yu)其(qi)可靠性高，可保證長(chang)時間穩定運行(xing)，減(jian)少故(gu)障率(lv)和(he)維(wei)護成本。湖(hu)北LNG測溫(wen)(wen)光(guang)纖(xian)(xian)價格(ge)

測溫光纖的優(you)勢在于其(qi)使用壽命長，可大幅降(jiang)低(di)更換和(he)維護成本(ben)。上海哪(na)里有測溫光纖大概多少錢

空(kong)間(jian)分辨(bian)(bian)率(lv)：系統連(lian)接所允(yun)許的(de)測(ce)(ce)量(liang)距離的(de)傳(chuan)感(gan)光(guang)(guang)(guang)纖(xian)，傳(chuan)感(gan)光(guang)(guang)(guang)纖(xian)放置(zhi)于恒定(ding)(ding)的(de)室溫(wen)(wen)(wen)下。傳(chuan)感(gan)光(guang)(guang)(guang)纖(xian)任意位置(zhi)取(qu)一段長度(du)(du)(du)(du)為空(kong)間(jian)分辨(bian)(bian)率(lv)的(de)光(guang)(guang)(guang)纖(xian)，同時在傳(chuan)感(gan)光(guang)(guang)(guang)纖(xian)頭部(bu)另取(qu)一段長度(du)(du)(du)(du)為10m的(de)光(guang)(guang)(guang)纖(xian)（大于空(kong)間(jian)分辨(bian)(bian)率(lv)的(de)長度(du)(du)(du)(du)），一同放入溫(wen)(wen)(wen)度(du)(du)(du)(du)為85℃的(de)恒溫(wen)(wen)(wen)箱或恒溫(wen)(wen)(wen)水浴槽中，觀察兩者的(de)溫(wen)(wen)(wen)度(du)(du)(du)(du)測(ce)(ce)量(liang)值的(de)偏差。溫(wen)(wen)(wen)度(du)(du)(du)(du)偏差應(ying)滿足測(ce)(ce)量(liang)精度(du)(du)(du)(du)要(yao)求，若(ruo)溫(wen)(wen)(wen)度(du)(du)(du)(du)偏差超出測(ce)(ce)量(liang)精度(du)(du)(du)(du)范圍(wei)需繼續放入傳(chuan)感(gan)光(guang)(guang)(guang)纖(xian)直至滿足測(ce)(ce)量(liang)精度(du)(du)(du)(du)要(yao)求，此(ci)時的(de)光(guang)(guang)(guang)纜長度(du)(du)(du)(du)即是該測(ce)(ce)量(liang)主機(ji)的(de)真實空(kong)間(jian)分辨(bian)(bian)率(lv)。（如(ru)下圖(tu)所示，0%~100%即為真實空(kong)間(jian)分辨(bian)(bian)率(lv)判(pan)定(ding)(ding)；10%~90%為常規空(kong)間(jian)分辨(bian)(bian)率(lv)判(pan)定(ding)(ding)。）上海(hai)哪里有測(ce)(ce)溫(wen)(wen)(wen)光(guang)(guang)(guang)纖(xian)大概多少錢

本文來自沈陽喜(xi)納(na)多采暖(nuan)工程有限公司：//zjlong.cn/Article/95c399558.html