摘要
光纤传感检测技术近年来发展较快,尤其是分布式光纤传感检测技术已广泛应用于各领域工程实际中。针对分布式光纤传感检测技术在大坝监测应用中存在的不完善之处,提出弹簧式光纤传感器检测新方法。该检测方法以弹簧式光纤传感器为一个连接的整体,改善了以往传感器在弯曲处整体性的不足,从而使得结构在传感器弯曲处发生微小裂缝或轻微应变,均可被传感器灵敏地反映出来。试验表明,改进后的弹簧式光纤传感器可以更真实准确地对大坝工作中应变和裂缝生成过程进行及时跟踪和监测。
Optical fiber sensor monitoring technology has developed rapidly in recent years. The distributed optical fiber sensor technology has been applied widely in many engineering fields. Aiming at the disadvantages in the application of the distributed optical fiber sensor in monitoring Dams, the spring optical fiber sensor technology is put forward in this paper. In this technology we connect the spring optical fiber sensor as whole and this improves the integrity of sensors at the bending area. Thus this makes it possible to reflect the minor cracks and strain at the bending area. Experiments prove that this spring optical fiber sensor can trace and monitor strain and the development of cracks of Dam more accurately and timely.
出处
《水力发电》
北大核心
2008年第8期56-58,共3页
Water Power
基金
国家科技支撑计划课题(2006BAC14B03)
国家自然科学基金重点项目(50539010,50539110)
