一个带有温度补偿的空中CH4传感器,基于小型光学结构,用于天然气管道泄漏分析
Guolin Li1, Haoran Yuan1, Yingjie Zhao1
1The Shandong Provincial Engineering Research Center of Intelligent Sensing and Measurement and Control Technology, College of Control Science & Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
概括
一个新的空中甲传感器使用无人机上的可调节二极管激光吸收光谱来有效地检测天然气管道泄漏. 这种先进的传感器为关键基础设施监控提供了高精度和快速响应时间.
科学领域:
- 环境科学 环境科学
- 频谱学是一种光谱学.
- 传感器技术 传感器技术
背景情况:
- 天然气管道运输对于能源勘探和输送至关重要.
- 甲 (CH4) 泄漏带来了重大的环境和安全风险.
- 现有的检测方法可能缺乏大规模管道监测的效率和便利性.
研究的目的:
- 开发一个紧的,空中甲传感器用于管道泄漏分析.
- 为了利用可调节二极管激光吸收光谱 (TDLAS) 与波长调制光谱 (WMS) 进行高精度测量.
- 将传感器与无人机 (UAV) 集成,以实现高效的现场部署.
主要方法:
- 设计了一个超紧的NIR传感器,采用1653.7nm激光和36厘米光学路径.
- 实现了温度补偿,以提高测量准确度.
- 利用成吉思汗鱼优化器优化的变化模式分解 (GKSO-VMD) 进行信号消噪.
- 采用双向长短期记忆 (GKSO-BiLSTM) 算法进行甲度逆转.
主要成果:
- 在测量和真实甲度之间达到0.9996的高相关系数 (R2).
- 展示了大约6秒的快速响应时间.
- 证实了极好的长期传感器稳定性.
- 估计的检测极限 (LoD) 为613ppb,整合时间为230秒.
结论:
- 开发的空中NIR甲传感器为天然气管道泄漏分析提供了有效和准确的方法.
- 传感器的紧设计,高灵敏度和快速响应使其适用于基于无人机的监控.
- 这项技术提高了天然气基础设施管理的安全性和效率.
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