Implementing Breath to Improve Response of Gas Sensors for Leak Detection in Plume Tracker Robots

Odor leak localization is playing a critical role in industry, especially in the case of combustible and toxic gas as well as security applications. This research has tried to address the need of a sniffing system to improve the gas sensor (TGS 2620) response. The novel algorithm named “Breath ADJ” based on biological sniffing and smelling is implemented in a sniffing system designed. And tested at various distances from the source. The Breath ADJ algorithm is aimed at realization of breath inhalation and exhalation to suck the odor on the sensor for improving the response and clean off the odor during recovery period of sensor response. The improvement in the system response has been evaluated by three features of slope during the rise of sensor response, Odor reach time and a maximum value of sensor response. The results based on an optimum Breath ADJ algorithm are promising. The algorithm is successful in sensing/detecting odor at a distance of 90 cm from the odor source in an indoor arena and 60 cm in outdoor door arena.