设计,建造和初步测试一个便携式甲测量平台.
Stuart N Riddick1,2, John C Riddick3, Elijah Kiplimo2
1Department of Science, Engineering and Aviation, University of the Highlands and Islands Perth, Crieff Road, Perth PH1 2NX, UK.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
新的,低成本的甲传感器正在测试准确度和分辨率. 无线自主可运输甲排放报告系统 (WATCH4ERS) 评估了有效监测甲排放和实现气候目标的四种技术.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 仪器仪表和测量仪器的使用
背景情况:
- 精确的甲度测量对于量化排放和评估减缓气候变化战略至关重要.
- 传统甲分析仪的高成本限制了对数以百万计的排放场所进行监测的广泛部署.
- 开发低成本的传感器技术对于扩大甲监测覆盖范围至关重要.
研究的目的:
- 开发和评估无线自主可携带甲排放报告系统 (WATCH4ERS),集成四种不同的甲检测技术.
- 评估商业上可用的低成本甲传感器的性能,准确性和分辨率.
- 通过了解不同传感器技术的成本效益平衡,为未来的大规模甲监测策略提供信息.
主要方法:
- 将四种传感技术集成到WATCH4ERS单元中:金属氧化物 (MOx),非分散红外线 (NDIR),集成红外线 (INIR) 和可调节二极管激光吸收光谱仪 (TDLAS).
- 最初的校准程序和受控的甲释放实验,以评估传感器响应.
- 分析传感器性能,包括响应时间,准确性和检测极限.
主要成果:
- 在500ppm以下的甲度下,INIR传感器的效用有限.
- MOx传感器表现出对数回应,但对分钟以下的度变化显示出反应时间较慢.
- NDIR传感器提供了高达600ppm的线性响应,但显示了延迟并错过了快速度变化. TDLAS提供了完整的检测,但成本很高.
结论:
- 每个传感器技术都有可能量化甲排放,但需要通过运营设计或部署战略进行优化.
- 将在现实环境中部署WATCH4ERS单位,以进一步调查这些多样化的甲探测技术的实际实用性.
- 结果将有助于理解成本效益的权衡,并为增加甲监测覆盖率的战略提供信息.
相关概念视频
Design Example: Measuring Distance Between Two Points with Obstructions
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
Introduction and Methods of Leveling
Leveling is a surveying procedure used to determine elevation differences between distant points. Elevation refers to the vertical distance above or below a reference datum, typically mean sea level (MSL). In the United States, elevations are often referenced to the mean sea level station at Father Point Rimouski along the St. Lawrence Seaway. To make the datum accessible, permanent markers are established throughout the region. These markers, called benchmarks, have known elevations. If the...
Leveling Equipment
As leveling involves measuring vertical distances relative to a horizontal line of sight, it requires a graduated rod, called a level rod, for vertical measurements and an instrument called a level for a horizontal sight line. A level includes a high-powered telescope with a mechanism for leveling to ensure the line of sight is horizontal when the bubble in the spirit level is centered. Leveling rods, made of wood, metal, or fiberglass, are graduated in feet or meters and commonly used in two-...
Differential Leveling
Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
Design Example: Maintaining Level of an Embankment
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...


