Atmospheric pollution is one of the biggest concerns for public health. Air quality monitoring is currently performed by expensive and cumbersome monitoring stations. For this reason, they are sparse, and therefore, inadequate to provide enough accurate information on the personal exposure to pollutant gases. The current worldwide trend to address this issue consists in the use of low-cost small gas sensors, already available on the market, with a wide range of costs and performances. However, the performance of these sensors is heavily affected by the environmental conditions of the specific location used for their deployment. For this reason, it is of fundamental importance to test them in real-world scenarios. Field evaluation of sensor performance could be a challenging task because, on the one hand, they have heterogeneous output signals, and on the other hand, there is no widely shared evaluation protocol. The SentinAir system has been designed and developed to facilitate this task. It can carry out performance evaluations for any type of sensor thanks to its configurable and adaptable sensing capability, multiple wireless sensor network compatibility, flexibility, and usability. In order to evaluate SentinAir capabilities and functionalities, the performances of CO₂, NO₂, and O₃ sensors were tested in real-world scenarios against reference instruments. To the best of our knowledge, there is no previous study providing information about the performance of SP-61 (O₃ sensor), IRC-A1 (CO₂ sensor), and TDS5008 (CO₂ sensor) achieved during on-field tests. On the contrary, results obtained by OXB431 (O₃ sensor) and NO2B43F (NO₂ sensor) are consistent with the ones shown in previous studies carried out in similar conditions. During validation tests, we have found for the best performing NO₂ sensor, and for the best O₃ sensor. Concerning the indoor experiment, the best CO₂ sensor performance showed an excellent . In conclusion, the effectiveness of this tool in evaluating the performance of heterogeneous gas sensors in different real-world scenarios has been demonstrated. Therefore, we anticipate that the use of SentinAir will facilitate researchers to carry out these challenging tasks.

中文翻译：

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用于气体传感器现场评估的灵活，即插即用，具有成本效益的工具的设计和开发

大气污染是公共卫生面临的最大问题之一。当前，空气质量监测是由昂贵而繁琐的监测站进行的。因此，它们是稀疏的，因此不足以提供有关个人暴露于污染物气体的足够准确的信息。当前解决该问题的全球趋势包括使用低成本小型气体传感器，该传感器已经在市场上出售，具有广泛的成本和性能。但是，这些传感器的性能在很大程度上取决于部署它们所使用的特定位置的环境条件。因此，在实际场景中对其进行测试至关重要。传感器性能的现场评估可能是一项艰巨的任务，因为一方面，它们具有异构的输出信号，另一方面，没有广泛共享的评估协议。的SentinAir系统已经过设计和开发，以简化此任务。凭借其可配置和自适应的感应功能，多种无线传感器网络兼容性，灵活性和可用性，它可以对任何类型的传感器进行性能评估。为了评估SentinAir的功能和功能，在实际情况下使用参考仪器测试了CO ₂，NO ₂和O ₃传感器的性能。据我们所知，以前没有研究提供有关SP-61（O ₃传感器），IRC-A1（CO ₂传感器）和TDS5008（CO ₂传感器）。相反，OXB431（O ₃传感器）和NO2B43F（NO ₂传感器）获得的结果与先前在类似条件下进行的研究结果一致。在验证测试中，我们发现以获得性能最佳的NO ₂传感器，以及以获得最佳的O ₃传感器。关于室内实验，最佳的CO ₂传感器性能显示出优异的。总之，已经证明了该工具在评估不同现实情况下的异质气体传感器性能方面的有效性。因此，我们预计SentinAir的使用将有助于研究人员执行这些具有挑战性的任务。