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| 基于高频微波技术的分布式布里渊光纤温度传感器 | |
| 引用本文： | 陈福昌,胡佳成,张承涛,林尊琪. 基于高频微波技术的分布式布里渊光纤温度传感器[J]. 中国激光, 2012, 39(6): 605009-135 |
| 作者姓名： | 陈福昌 胡佳成 张承涛 林尊琪 |
| 作者单位： | 陈福昌:中国科学院上海光学精密机械研究所高功率激光物理国家实验室， 上海 201800 胡佳成:中国科学院上海光学精密机械研究所高功率激光物理国家实验室， 上海 201800 张承涛:中国科学院上海光学精密机械研究所高功率激光物理国家实验室， 上海 201800 林尊琪:中国科学院上海光学精密机械研究所高功率激光物理国家实验室， 上海 201800 |
| 摘 要： | 提出了一种基于分布式布里渊光纤传感系统的温度快速测量方案。该方案基于外差相干检测原理,利用高速脉冲检波管对布里渊散射信号进行直接探测,从而缩短了测量时间;并结合累加平均与小波变换技术,减小了布里渊散射信号中的噪声,通过对去噪后的信号进行解调实现了长距离温度测量。实验结果表明,在24.8km的长度范围内,温度测量误差小于3℃,测量时间小于3s。 |
| 关 键 词： | 传感器 布里渊散射 高频微波 温度测量 小波变换 |
| 收稿时间： | 2011-12-29 |
Distributed Brillouin Optical Fiber Temperature Sensor Based on High Frequency Microwave Technology |
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| Chen Fuchang Hu Jiacheng Zhang Chengtao Lin Zunqi. Distributed Brillouin Optical Fiber Temperature Sensor Based on High Frequency Microwave Technology[J]. Chinese Journal of Lasers, 2012, 39(6): 605009-135 | |
| Authors: | Chen Fuchang Hu Jiacheng Zhang Chengtao Lin Zunqi |
| Affiliation: | Chen Fuchang Hu Jiacheng Zhang Chengtao Lin Zunqi(National Laboratory of High Power Laser Physics,Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Shanghai 201800,China) |
| Abstract: | A scheme for fast temperature measurement based on distributed Brillouin optical fiber sensor is proposed. The Brillouin scattering signal is detected by the high speed pulse RF detector based on the principle of heterodyne coherent detection, with which the measuring time can be decreased. Moreover, the noise of the Brillouin scattering signal is decreased by combining cumulative average technology with wavelet transform technology. Thus the de-noised signal is demodulated for temperature measurement within large distance. The experimental results make it clear that a temperature measurement error of less than 3 ℃ and a measuring time of less than 3 s can be achieved at a distance of 24.8 km. |
| Keywords: | sensors Brillouin scattering high frequency microwave temperature measurement wavelet transform |
| 本文献已被 CNKI 等数据库收录！ | |