Study of AC drive type fluid-based resistive inclination sensor

Hidemi Kawano, Yoshinori Matsumoto

Research output: Contribution to journalArticlepeer-review


In this research, one-axis high sensitive and low power consumption inclination sensor has been developed. The electric resistance of fluid between two electrodes is used to realize the sensor. A cap was attached to PCB board on which three electrodes were patterned. And propylene carbonate was encapsulated in it. Equivalent circuit model of the sensor was modeled using AC impedance method. DC and AC voltage were applied to a semicircle electrode, the other electrode was grounded and the voltage of an arc electrode was measured. The AC sensitivity was six times higher than the DC sensitivity at Vdd=5 V. The sensor can operate even at low AC voltage of IV. In addition, custom driving and detection circuit were developed and evaluated for practical application.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
Journalieej transactions on sensors and micromachines
Issue number10
Publication statusPublished - 2010


  • Fluid
  • Inclination sensor
  • Low power consumption
  • Propylene carbonate
  • Resistance change

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering


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