Tilt sensor based on three electrodes dielectric liquid capacitive sensor

This paper presents a design, fabrication and characterization of a low-cost capacitive tilt sensor. The proposed sensor consists of a three-electrode capacitor, which contains two-phase of the air and liquid as the dielectric media. The three electrodes hold a plastic tube and the tube is positioned on a printed circuit board (PCB) which consists of a 127 kHz sine wave generator, a pre-Amplifier, a rectifier and a low pass filter. The proposed sensor structure can measure tilt angles in the rage of 0° to 75°, where the linear relationship between the angle to be measured and the output signal was observed in the range of 0° to 50°. The sensitivity and resolution of the sensor are measured to be 40mV/degree and 0.5 degree, respectively.

Title: Tilt sensor based on three electrodes dielectric liquid capacitive sensor
Authors: Dinh Tiep, D.
My, B.N.
Tuan, V.Q., (...)
Tung, B.T.
Trinh, C.D.
Keywords: Capacitive sensor, Comsol multiphysics, Tilt angle measurement
Issue Date: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: Scopus
Abstract: This paper presents a design, fabrication and characterization of a low-cost capacitive tilt sensor. The proposed sensor consists of a three-electrode capacitor, which contains two-phase of the air and liquid as the dielectric media. The three electrodes hold a plastic tube and the tube is positioned on a printed circuit board (PCB) which consists of a 127 kHz sine wave generator, a pre-Amplifier, a rectifier and a low pass filter. The proposed sensor structure can measure tilt angles in the rage of 0° to 75°, where the linear relationship between the angle to be measured and the output signal was observed in the range of 0° to 50°. The sensitivity and resolution of the sensor are measured to be 40mV/degree and 0.5 degree, respectively.
Description: 2016 IEEE 6th International Conference on Communications and Electronics, IEEE ICCE 2016 7 September 2016, Article number 7562631, Pages 172-175
URI: http://ieeexplore.ieee.org/document/7562631/
http://repository.vnu.edu.vn/handle/VNU_123/34076
ISBN: 978-150901931-1
Appears in Collections:Bài báo của ĐHQGHN trong Scopus
 

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