Benefits of virtual sensors for air quality monitoring in humid conditions

SENSORS AND ACTUATORS B-CHEMICAL

卷:344

Article

Domenech-Gil, Guillem¹  Puglisi, Donatella¹ 

[1] Linkoping Univ, Dept Phys Chem & Biol, Div Sensor & Actuator Syst, Linkoping, Sweden

关键词: Gas sensor;    Virtual array;    Air quality monitoring;    Signal processing;    Temperature cycle;   

DOI  :  10.1016/j.snb.2021.130294

来源: Elsevier

【 摘 要 】

The gas sensing mechanisms, response, and behaviour of a real and a virtual solid-state chemical gas sensor operating either in static or in dynamic mode have been compared. The analysis was done by exposing simultaneously both sensors to different concentrations of various volatile organic compounds diluted in dry, as well as humid, synthetic air. The results revealed similar responses and behaviours for both types of measurement modes when the sensors were exposed towards single gas compounds, but a sensitivity enhancement in measurements comprising mixtures of gases when the sensors were operated in dynamic mode. The method used is able to overcome surface saturation problems and is beneficial for applications where mixtures of gases diluted in relative humidity are present.

【 授权许可】

Free