Title :
Study of highly sensitive smell sensing system using gas detector tube combined with optical scanner
Author :
Tanaka, Y. ; Nakamoto, T. ; Moriizumi, T.
Author_Institution :
Graduate Sch. of Sci. & Eng., Tokyo Inst. of Technol., Japan
Abstract :
We describe rapid and low-cost system for monitoring bad smells in the living environment. This system consists of a conventional gas detector tube and an optical scanner. It was found that methyl mercaptan, hydrogen sulfide and propionaldehyde with the concentrations down to 29 ppb, 19 ppb and 46 ppb respectively were detectable. The sensitivity increased about 10 times larger than that of the conventional detector tube utilizing the accumulation effect. Moreover, we are currently developing a portable system using a one-dimensional CCD image sensor. The distribution of bad smell will be monitored using multiple portable sensors in the near future.
Keywords :
CCD image sensors; chemical variables measurement; gas sensors; optical scanners; portable instruments; CCD image sensor; bad smell monitoring; gas detector tube; hydrogen sulfide; living environment; methyl mercaptan; optical scanner; portable sensors; portable system; propionaldehyde; smell sensing system; Charge-coupled image sensors; Chemical analysis; Gas detectors; Gases; Hydrogen; Interference; Monitoring; Optical pumping; Optical sensors; Optical signal processing;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on
Print_ISBN :
0-7803-8994-8
DOI :
10.1109/SENSOR.2005.1497463
