Breath sensor based on conductive foam: Idea, construction, and characterisation

This paper deals with breath sensor constructed based on conductive, polyurethane foam, which is usually used for storage of electronics devices. A piece of the foam with especially prepared terminals is placed under tight T-shirt at the chest of a monitored person. The paper presents the idea of the sensor, investigation on its construction and problems being faced with. Parameters assessment processes and results are described too, so finally well characterized electronics component, ready to use, is presented. Some examples of use of the sensor are presented at the end of the paper.