Design and realization of a capacitive sensor measurement system

2017 ◽  
Author(s):  
Cong Long ◽  
Tao Huang
Keyword(s):  
Measurement System ◽  
Capacitive Sensor ◽  
Sensor Measurement

Capacitive sensor measurement rate improves by pre-stretching *

2021 ◽  
Author(s):  
Elze Porte ◽  
Thomas Sipple ◽  
Lina Sanchez Botero ◽  
Dylan Shah ◽  
Rebecca Kramer-Bottiglio
Keyword(s):  
Capacitive Sensor ◽  
Sensor Measurement ◽  
Measurement Rate

scholarly journals Measurement System for Lossy Capacitive Sensors: Application to Edible Oils Quality Assessment

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4299 ◽  
Author(s):  
Ahmed Fendri ◽  
Ahmed Yahia Kallel ◽  
Hanen Nouri ◽  
Hamadi Ghariani ◽  
Olfa Kanoun
Keyword(s):  
Measurement System ◽  
Relative Permittivity ◽  
Edible Oils ◽  
Low Cost ◽  
Oil Quality ◽  
Capacitive Sensor ◽  
Polar Compounds ◽  
Coefficient Of Determination ◽  
Chemical Parameters ◽  
Dielectric Parameters

This paper aimed to develop a portable, low-cost, and easy-to-use measurement system for oil quality degradation assessment. The main two chemical parameters affected by frying are the total polar compounds (TPC) and free fatty acids. The system should characterize the change of chemical parameters by measuring the changes in its dielectric parameters. The dielectric parameters, relative permittivity, and conductivity are measured by measuring the capacitance and resistance of a capacitive sensor dipped in oil. The main challenges are that the corresponding changes of the capacitance and resistance are very small and the presence of stray effects. For this reason, the measurement system should be able to detect changes in capacitance and resistance with high resolution and with good immunity to stray effects. The proposed measurement system is based on the conversion of impedance to voltage and time and combining, therefore, having two measurement methods in one circuit. In this way, it is possible to measure the dielectric and resistive parameters and not only the relative permittivity as was done in previous works. The results showed a strong correlation between the chemical and electrical parameters with a coefficient of determination in the range of 0.9.

An application of magnet and magnetic sensor: measurement system for tooth movement

1990 ◽  
Vol 37 (10) ◽  
pp. 919-924 ◽  
Author(s):  
Y. Yamada ◽  
N. Yoshida ◽  
K. Kobayashi ◽  
K. Yamauchi
Keyword(s):  
Measurement System ◽  
Tooth Movement ◽  
Magnetic Sensor ◽  
Sensor Measurement

Wheel-Tooling Gap Measurement System for Conform™ Extrusion Machinery Based on a Capacitive Sensor

2005 ◽  
Vol 127 (2) ◽  
pp. 394-401 ◽  
Author(s):  
K. Khawaja ◽  
L. Seneviratne ◽  
K. Althoefer
Keyword(s):  
Measurement System ◽  
Capacitive Sensor ◽  
Extrusion Process ◽  
Monitoring And Control ◽  
Sensing System ◽  
Gap Measurement ◽  
Wide Range ◽  
On Line ◽  
And Control ◽  
First Time

Conform™ extrusion is a very versatile manufacturing process enabling the production of a wide range of extruded profiles. It is critical to maintain a precise predefined wheel-tooling gap for the efficient running of the Conform extrusion process and to maintain high product quality. However, this is a challenging task due to the hostile environment, high operating temperatures, and required accuracy. An accurate high-temperature gap measurement system for Conform extrusion machinery, using a capacitive sensing system, is developed in this study. The sensor is implemented in a copper Conform extrusion machine, and experimental results are presented, providing for the first time a detailed view of Conform Extrusion gap behavior during production. It is shown that the proposed gap-sensing and control system results in a number of advantages, including reduced machine setup times, reduced flash (waste) rates, and on-line monitoring and control of gap size. The research is carried out in collaboration with Holton Machinery Ltd., a leading manufacturer of Conform Extrusion machinery.

scholarly journals Temperature Sensor Measurement System for Firefighter Gloves

2012 ◽  
Vol 47 ◽  
pp. 611-614 ◽  
Author(s):  
D. Mrugala ◽  
F. Ziegler ◽  
J. Kostelnik ◽  
W. Lang
Keyword(s):  
Measurement System ◽  
Temperature Sensor ◽  
Sensor Measurement

scholarly journals Parasitic consideration for differential capacitive sensor

2019 ◽  
Vol 8 (3) ◽  
pp. 798-807
Author(s):  
Nurul Arfah Che Mustapha ◽  
A. H. M. Zahirul Alam ◽  
Sheroz Khan ◽  
Amelia Wong Azman
Keyword(s):  
Energy Harvesting ◽  
Capacitive Sensor ◽  
Capacitive Sensing ◽  
Simulation Test ◽  
Good Linearity ◽  
Sensor Measurement ◽  
Parasitic Impedance

Parasitic integration for a single supply differential capacitive sensing technique is presented in this paper. In real capacitive sensor measurement, parasitic impedance exists in its measurement. This paper objective is to study the effect of capacitive and resistive parasitic to the capacitive sensor circuit. The differential capacitive sensor circuit derivation theory is elaborated first. Then, comparison is made using simulation. Test was carried out using frequency from 40 kHz up to 400 kHz. Result is presented and have shown good linearity of 0.99984 at 300 kHz, R-squared value. This capacitive sensor is expected to be used for energy harvesting application.

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