The Technion Center of Excellence in Exposure Science and Environmental Health (TCEEH), Faculty of Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa, Israel.
The Technion Center of Excellence in Exposure Science and Environmental Health (TCEEH), Faculty of Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa, Israel.
Sci Total Environ. 2017 Jan 1;575:639-648. doi: 10.1016/j.scitotenv.2016.09.061. Epub 2016 Sep 24.
Recent developments in sensory and communication technologies have made the development of portable air-quality (AQ) micro-sensing units (MSUs) feasible. These MSUs allow AQ measurements in many new applications, such as ambulatory exposure analyses and citizen science. Typically, the performance of these devices is assessed using the mean error or correlation coefficients with respect to a laboratory equipment. However, these criteria do not represent how such sensors perform outside of laboratory conditions in large-scale field applications, and do not cover all aspects of possible differences in performance between the sensor-based and standardized equipment, or changes in performance over time. This paper presents a comprehensive Sensor Evaluation Toolbox (SET) for evaluating AQ MSUs by a range of criteria, to better assess their performance in varied applications and environments. Within the SET are included four new schemes for evaluating sensors' capability to: locate pollution sources; represent the pollution level on a coarse scale; capture the high temporal variability of the observed pollutant and their reliability. Each of the evaluation criteria allows for assessing sensors' performance in a different way, together constituting a holistic evaluation of the suitability and usability of the sensors in a wide range of applications. Application of the SET on measurements acquired by 25 MSUs deployed in eight cities across Europe showed that the suggested schemes facilitates a comprehensive cross platform analysis that can be used to determine and compare the sensors' performance. The SET was implemented in R and the code is available on the first author's website.
近年来，传感和通信技术的发展使得便携式空气质量（AQ）微传感器单元（MSU）的开发成为可能。这些 MSU 允许在许多新的应用中进行 AQ 测量，例如流动暴露分析和公民科学。通常，这些设备的性能是使用平均误差或与实验室设备的相关系数来评估的。然而，这些标准不能代表这些传感器在大规模现场应用的实验室条件之外的性能，也不能涵盖基于传感器的设备和标准化设备之间性能差异的所有方面，或者随着时间的推移性能的变化。本文提出了一个全面的空气质量微传感器单元评估工具箱（SET），通过一系列标准来评估空气质量微传感器单元，以更好地评估它们在不同应用和环境中的性能。在 SET 中包括了四个新的方案，用于评估传感器：定位污染源的能力；在粗略的尺度上代表污染水平的能力；捕捉观察到的污染物的高时间变异性及其可靠性的能力。每个评估标准都允许以不同的方式评估传感器的性能，共同构成对传感器在广泛应用中的适用性和可用性的全面评估。在欧洲 8 个城市部署的 25 个 MSU 采集的测量数据上应用 SET 表明，所提出的方案有助于进行全面的跨平台分析，可用于确定和比较传感器的性能。SET 是用 R 语言实现的，代码可在第一作者的网站上获得。
