P1AP.19 - Effects of Gas Sensor Location in Olfactory Assist Mask

17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria
P-1 - Applications of Chemical Sensors
H. Matsukura - Osaka University, Osaka (Japan), S. Okuda, H. Ishida - Tokyo University of Agriculture and Technology, Tokyo (Japan)
472 - 473


Experimental investigations conducted to show the effects of gas sensor location in an olfactory assist mask system is reported. An olfactory assist mask is an olfactory amplifier, which consists of a gas sensor and an odor generator. The sensor measures the concentration variations of a gaseous chemical compound wafting in the air. Then, the odor generator presents the user with an odor with amplified intensity. Therefore, the user of the olfactory assist mask can detect dilute gas as if his/her olfactory sensitivity were enhanced. Here we show that the usability of the olfactory assist mask can be improved by changing the position of the gas sensor. An experimental result is presented to show that placing a gas sensor on a foot of a human subject has an effect similar to putting his/her nose close to the ground. A gas plume trailing along the ground can be detected while walking upright, like a dog sniffing its nose near the ground by crouching down. An experimental result is also reported to show that the fluctuations of the response of a metal-oxide gas sensor which is caused by strong wind can be effectively reduced by placing the gas sensor in a flow cell.