Remote gas sensing in full-scale fire with sub-terahertz waves
- Resource Type
- Conference
- Authors
- Shimizu, Naofumi; Ikari, Tomofumi; Kikuchi, Ken'ichi; Matsuyama, Ken; Wakatsuki, Atsushi; Kohjiro, Satoshi; Fukasawa, Ryoichi
- Source
- 2011 IEEE MTT-S International Microwave Symposium Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International. :1-4 Jun, 2011
- Subject
- Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fires
Absorption
Sensors
Mixers
Testing
Gases
Receivers
gas detector
optical mixing
remote sensing
submillimeter wave measurements
- Language
- ISSN
- 0149-645X
A remote gas sensor based on a continuous-wave sub-terahertz spectrometer with an operation bandwidth between 200 and 500 GHz has been developed. The performance of the developed system was investigated in a full-scale fire. The measured transmission spectra of smoke show the existence of hydrogen cyanide (HCN) and water molecules, which were generated due to the combustion of a foam urethane block. The HCN content estimated from the absorption intensity agrees quite well with that obtained from the chemical analysis of gases sampled from the fire site. These results demonstrate the potential of the developed sensing system as a remote toxic gas sensor at disaster sites.