Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328612
