A Semi-Cylindrical Capacitive Sensor with Interface Circuit using for Fluidic Measuring

Author

Chiang, Cheng-Ta ; Huang, Yu-Chung

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsing Chu

fYear

2006

fDate

24-27 April 2006

Firstpage

2318

Lastpage

2322

Abstract

In this paper, a semi-cylindrical capacitive sensor with interface circuit using for fluidic measuring is newly proposed. The numerical analysis method to calculate the capacitance of the semi-cylindrical capacitive sensor is analyzed and discussed. Besides, the interface circuit is compact to simplify the circuit complexity, and could be easily implemented for fluidic measuring. The pF-range capacitive variation of the semi-cylindrical capacitive sensor can he detected and converted into voltage variation by the interface circuit. All the functions of the interface circuit are proved successfully through HSPICE simulation. These simulation results have successfully confirmed the correct functions and performance of the semi-cylindrical capacitive sensor with interface circuit using for fluidic measuring

Keywords

SPICE; capacitive sensors; circuit complexity; numerical analysis; switched capacitor networks; HSPICE; capacitive sensor; circuit complexity; fluidic measuring; interface circuit; switched-capacitor circuits; voltage variation; Capacitance; Capacitive sensors; Capacitors; Circuit simulation; Circuit testing; Complexity theory; Dielectric constant; Electrostatic analysis; Instrumentation and measurement; Numerical analysis; Capacitive sensor; HSPICE; fluidic measuring; interface circuit; switched-capacitor;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE

Conference_Location

Sorrento

ISSN

1091-5281

Print_ISBN

0-7803-9359-7

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2006.328612

Filename

4124774