Experimental Confirmation of Cylindrical Electromagnetic Sensor Design for Liquid Detection Application

  • K. Tashiro
  • H. Wakiwaka
  • T. Mori
  • R. Nakano
  • N. H. Harun
  • N. Misron
Part of the Smart Sensors, Measurement and Instrumentation book series (SSMI, volume 12)


Design of cylindrical electromagnetic sensor is discussed. The purpose of this sensor is to detect a change in the conductivity or permittivity of the liquid. If the evaluation frequency is less than 100 kHz, skin effects would be negligible. The proposed sensor consists of two cylindrical sensors, a solenoid coil and a cylindrical capacitor. For an ideal shape condition, estimation methods for inductance and capacitance have been already proposed. However, the practical issues need to be clarified. It starts with fabrication of several coils and capacitors, to confirm the validity of the estimation methods. From experimental results, it was found that, the estimation error and existence of the parasitic element could not be neglected. Liquid detection demonstrations with fabricated sensors are also demonstrated.


Liquid detection sensor Electromagnetic field Low-frequency Cylindrical capacitor Solenoid coil 


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • K. Tashiro
    • 1
  • H. Wakiwaka
    • 1
  • T. Mori
    • 1
  • R. Nakano
    • 1
  • N. H. Harun
    • 2
  • N. Misron
    • 2
  1. 1.Spin Device Technology Center (SDTC)Shinshu UniversityNaganoJapan
  2. 2.Faculty of EngineeringUniversity Putra MalaysiaKuala LumpurMalaysia

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