激光技术
激光技術
격광기술
LASER TECHNOLOGY
2014年
6期
759-763
,共5页
熊显名%闵旺%秦祖军
熊顯名%閔旺%秦祖軍
웅현명%민왕%진조군
激光技术%全光纤电流互感器%温度补偿%椭圆偏振光长轴斜率
激光技術%全光纖電流互感器%溫度補償%橢圓偏振光長軸斜率
격광기술%전광섬전류호감기%온도보상%타원편진광장축사솔
laser technique%all optical fiber current sensor%temperature compensation%the longer axis slope of elliptic polarized light
为了解决传感光纤的弯曲、扭转以及外界工作环境的变化导致全光纤电流传感器测量精度降低的问题，提出了一种基于输出椭圆偏振光长轴斜率的全光纤电流传感器温度补偿方法。论证了椭圆偏振光长轴斜率能够反应输出椭圆偏振光的光椭率的大小，利用TMS320F28335和对应算法求出斜率，实验中使用输出椭圆偏振光长轴斜率对传感器进行修正并进行了实际测量。结果表明，基于该修正方法的测量系统，实现了在单次变温条件20℃～60℃内变化时测量结果偏差满足0．2s。这一结果对全光纤实用化研究是有帮助的。
為瞭解決傳感光纖的彎麯、扭轉以及外界工作環境的變化導緻全光纖電流傳感器測量精度降低的問題，提齣瞭一種基于輸齣橢圓偏振光長軸斜率的全光纖電流傳感器溫度補償方法。論證瞭橢圓偏振光長軸斜率能夠反應輸齣橢圓偏振光的光橢率的大小，利用TMS320F28335和對應算法求齣斜率，實驗中使用輸齣橢圓偏振光長軸斜率對傳感器進行脩正併進行瞭實際測量。結果錶明，基于該脩正方法的測量繫統，實現瞭在單次變溫條件20℃～60℃內變化時測量結果偏差滿足0．2s。這一結果對全光纖實用化研究是有幫助的。
위료해결전감광섬적만곡、뉴전이급외계공작배경적변화도치전광섬전류전감기측량정도강저적문제，제출료일충기우수출타원편진광장축사솔적전광섬전류전감기온도보상방법。론증료타원편진광장축사솔능구반응수출타원편진광적광타솔적대소，이용TMS320F28335화대응산법구출사솔，실험중사용수출타원편진광장축사솔대전감기진행수정병진행료실제측량。결과표명，기우해수정방법적측량계통，실현료재단차변온조건20℃～60℃내변화시측량결과편차만족0．2s。저일결과대전광섬실용화연구시유방조적。
In order to solve the low measurement precision of all optical fiber current sensors induced by the bend and twist of sensor fiber and the change of external environment , a new method was proposed to realize the temperature compensation based on the longer axis slope of elliptic polarized light .It was demonstrated that elliptical polarized light long axis slope can response the change of the output light elasticity .The slope was calculated by TMS320F28335 and some algorithms.The sensor was modified by the elliptical polarized light long axis slope and some actual measurements was done.The experiment results show that the measurement system based on the revised method can meet the required precision of 0.2s in a single temperature change of 20℃~60℃.The result is helpful for the research of all optical fiber current sensors .
