熔锥耦合型光纤声发射传感器系统及其应用
An Optical Fiber Acoustic Emission Sensing System Based on the Fiber Fused Tapered and Coupling Technique and Its Application
摘 要
介绍了基于熔锥耦合技术的光纤声发射传感器和系统。系统响应频率为20~180 kHz，有效峰值灵敏度为-55 dB ref 1 V/μbar。使用该系统实现了对局部放电超声信号的有效测量。光纤传感具有本质安全，抗电磁干扰等优点，在高电压强磁场环境下工作可实现高灵敏度、长期稳定的远程监测，该系统有望在电力变压器局部放电在线监测中得到应用。
光纤耦合
局部放电
Acoustic emission testing
Fiber coupler
Partial discharge
Abstract
An optical fiber acoustic emission sensing system based on the fiber fused tapered and coupling technique was introduced. Its working frequency was 20 ~ 180 kHz and the effective peak sensitivity was about -55 dB ref 1 V/μbar. This sensing system could effectively detect the ultrasound signal of partial discharge. It was proved to be suitable for online monitoring of the electric power equipments safety.
中图分类号 TG115.28
所属栏目 仪器研制
基金项目 山东省科技攻关计划资助项目(2010GGX10103)；山东省科学院科技发展基金资助项目(鲁科院字［2008］102号)
收稿日期 2010/8/24
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备注祁海峰(1980-)，男，助理研究员，博士，主要从事光纤传感、激光检测技术等研究。
引用该论文: QI Hai-Feng,MA Liang-Zhu,CHANG Jun,YIN Kui-Long,CHEN Yu-Feng. An Optical Fiber Acoustic Emission Sensing System Based on the Fiber Fused Tapered and Coupling Technique and Its Application[J]. Nondestructive Testing, 2011, 33(6): 66～69
祁海峰,马良柱,常军,尹奎龙,陈玉峰. 熔锥耦合型光纤声发射传感器系统及其应用[J]. 无损检测, 2011, 33(6): 66～69
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参考文献
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