Mchale Laura E, Martinez Benjamin, Miller Thomas W, Yalin Azer P
Opt Express. 2019 Jul 8;27(14):20084-20097. doi: 10.1364/OE.27.020084.
We present the design, development, and testing results of a novel laser-based cavity ring-down spectroscopy (CRDS) sensor for methane detection. The sensor is specifically oriented for mobile (i.e. vehicle deployed) monitoring of natural gas emissions from oil and infrastructure. In contrast to most commercial CRDS sensors, we employ an open-path design which allows higher temporal response and a lower power and mass package more suited to vehicle integration. The system operates in the near-infrared (NIR) at 1651 nm with primarily telecom components and includes cellular communication for wireless data transfer. Along with basic sensor design and lab testing, we present results of field measurements showing performance over a range of ambient conditions and examples of methane plume detection.
我们展示了一种用于甲烷检测的新型基于激光的光腔衰荡光谱（CRDS）传感器的设计、开发和测试结果。该传感器专门用于对石油和基础设施的天然气排放进行移动（即车辆部署）监测。与大多数商业CRDS传感器不同，我们采用了开放路径设计，这种设计具有更高的时间响应速度，以及更低的功耗和更轻的质量，更适合车辆集成。该系统在1651 nm的近红外（NIR）波段运行，主要采用电信组件，并包括用于无线数据传输的蜂窝通信。除了基本的传感器设计和实验室测试外，我们还展示了现场测量结果，这些结果显示了在一系列环境条件下的性能以及甲烷羽流检测示例。
