山东科学 ›› 2015, Vol. 28 ›› Issue (1): 51-55.doi: 10.3976/j.issn.1002-4026.2015.01.009

• 光纤与光子传感技术 • 上一篇    下一篇

基于薄壁圆筒结构的光纤光栅瓦斯压力传感器

宋广东,孟祥军,宫志杰,胡宾鑫,刘统玉,李连庆   

  1. 1. 山东省光纤传感技术重点实验室,山东 济南 250014;2. 山东省科学院激光研究所, 山东 济南 250014;3 兖州矿业集团有限公司,山东 济宁 273500
  • 收稿日期:2014-12-24 出版日期:2015-02-20 发布日期:2015-02-20
  • 作者简介:宋广东(1981-),男,助理研究员,工学硕士,研究方向为岩石力学与信号分析处理研究。Email:guangdongsgd@163.com
  • 基金资助:
    山东省科学院青年基金(2013QN005);山东省科技发展计划(2014GSF120017)

Thin-walled cylinder structure based optical fiber grating gas pressure sensor

SONG Guang-dong,MENG Xiang-jun,GONG Zhi-jie,HU Bin-xin,LIU Tong-yu,LI Lian-qing   

  1. 1.Shandong Provincial Key Laboratory for Optical Fiber Sensing Technology, Jinan 250014,China; 2.Laser Institute,Shandong Academy of Sciences, Jinan 250014, China; 3. Yanzhou Coal Mining Corporation Limited, Jining273500, China
  • Received:2014-12-24 Online:2015-02-20 Published:2015-02-20

摘要: 为提高瓦斯压力监测的精度和准确性,设计了一种带温度补偿、基于薄壁圆筒结构的高灵敏度新型光纤光栅瓦斯压力传感器。通过理论分析,确定了传感器的结构和尺寸。该传感器采用内径15 mm、壁厚0.13 mm、材料为30CrMnSiA的薄壁圆筒。通过测试,传感器灵敏度为220 pm/MPa,瓦斯压力为10 MPa时光纤光栅中心波长漂移量为2.93 nm,基本误差小于0.05 MPa,具有较好的可重复性。现场应用表明,新型传感器具有较高精度,克服了温度对监测结果的影响。

关键词: 薄壁圆筒, 光纤传感, 掘进巷道, 瓦斯压力

Abstract: We design a new high sensitive fiber grating gas pressure sensor with temperature compensation based on a thinwalled cylinder structure to improve the precision and accuracy of gas pressure sensing. We determine its structure and size through theory analysis. It has a thinwalled cylinder structure with inner diameter of 15 mm, wall thickness of 0.13 mm and 30CrMnSiA as material. Its sensitivity is 220 pm/MPa.The drift amount of its fiber grating central wavelength is 2.93 nm when gas pressure is 10 MPa.It has error of less than 0.05 MPa and better reproducibility.Practical application shows that it has higher accuracy and can overcome the impact of temperature on measurement results.

Key words: thinwalled cylinder structure, optical fiber sensing, excavation roadway, gas pressure

中图分类号: 

  • TD712