Hydrogen gas diffusion imaging using multiple FET type gas sensors

T. Kiwa, T. Yamaguchi, K. Tsubota, W. Naruyama, H. Yamada, K. Tsukada

Research output: Contribution to journalArticlepeer-review


Imaging of hydrogen gas concentrations were demonstrated using arrayed sensors system in the cylindrical diffusion tank-shaped simulator. The field effect transistor type hydrogen sensors with platinum gate electrode were used. The sensitivity of the sensors was around -34.1 mV/dec. and the response time was 1.2 sec. in average. By applying a sensor drive circuit to each sensor, the diffusion processes of the hydrogen gas were successfully obtained in time domain and two different processes were demonstrated using 100% hydrogen gas. These results indicate that real-time monitoring of the hydrogen gas distribution can be possible. Additionally, the calibration method of the acquired data was proposed.

Original languageEnglish
Pages (from-to)219-224
Number of pages6
JournalInternational Journal of Advanced Mechatronic Systems
Issue number4
Publication statusPublished - 2010


  • gas distribution
  • hydrogen gas sensor
  • sensor network

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering


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