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| A Strain Sensor Based on OTDR for Gas Trunk Pipelines | |
| 作者姓名： | LIU Tiegen LI Chuan ZHANG Yimo LI Xin |
| 作者单位： | LIU Tiegen:The Key Laboratory of Optoelectronics Information Science & Technology,EMC, The Institute of Optoelectronics Precision Instrument,Tianjin University, Tianjin 300072, China LI Chuan:The Key Laboratory of Optoelectronics Information Science & Technology,EMC, The Institute of Optoelectronics Precision Instrument,Tianjin University, Tianjin 300072, China ZHANG Yimo:The Key Laboratory of Optoelectronics Information Science & Technology,EMC, The Institute of Optoelectronics Precision Instrument,Tianjin University, Tianjin 300072, China LI Xin:The Key Laboratory of Optoelectronics Information Science & Technology,EMC, The Institute of Optoelectronics Precision Instrument,Tianjin University, Tianjin 300072, China |
| 基金项目： | SupportedbytheNationalNatureScienceFoundationof China !( 69392 4 0 2 )，the 30 7Subjectofthe 863High TechnologyProgram，th |
| 摘 要： | 1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｔｈｅｌａｎｄｓｕｂｓｉｄｅｎｃｅｅｆｆｅｃｔｏｎｕｎｄｅｒｇｒｏｕｎｄｐｉｐｅｌｉｎｅｉｓｓｅｖｅｒｅ ,ｂｅｃａｕｓｅｔｈｅｓｅｐｉｐｅｌｉｎｅｓａｒｅｕｓｕａｌｌｙｂｕｒｉｅｄｂｅｌｏｗｇｒｏｕｎｄａｂｏｕｔ1 .5ｍ .Ｆｏｒｅｘａｍｐｌｅ,ｔｈｅａｖｅｒａｇｅｈｅｉｇｈｔｏｆｌａｎｄｓｕｂｓｉｄｅｎｃｅｉｓ 50～ 1 0 0ｍｍｉｎＸｉｑｉｎＤｉｓｔｒｉｃｔ,ａｎａｃｔｉｖｅｓｕｂｓｉｄｉｎｇｒｅｇｉｏｎｉｎＴｉａｎｊｉｎ .Ｔｈｅａｃｃｕｍｕｌａｔｅｄｓｕｂｓｉｄｅｎｃｅ… |
| 收稿时间： | 2000/6/7 |
A Strain Sensor Based on OTDR for Gas Trunk Pipelines |
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| LIU Tiegen,LI Chuan,ZHANG Yimo,LI Xin.A Strain Sensor Based on OTDR for Gas Trunk Pipelines[J].中国激光(英文版),2001,10(1):24-28. | |
| Abstract: | A strain sensor based on optical time domain reflectometer (OTDR) was designed, in which an optic fiber is bonded on each detecting point. It is worth noting that the distortion of pipelines can be measured partly by detecting the strain at the joint of gas trunk pipelines. Based on detecting single point strain of markedly different from the remainder of the fiber, the loss modulation approach is suitable to monitor the distortion of gas trunk pipelines. |
| Keywords: | OTDR (optical time domain reflectometer) land subsidence gas trunk pipelines optic fiber strain sensor |