Microprocessor based new technique for measuring pneumatic pressure using optocoupler controlled vibrating wire transducer

Author

Balasubramanian, Karuppanan ; Güven, Kamil ; Altun, Ziya Gokalp

Author_Institution

Dept. of Electr. & Electron. Eng., Cukurova Univ., Adana, Turkey

fYear

1994

fDate

10-12 May 1994

Firstpage

464

Abstract

A new and sensitive pneumatic pressure measuring device is proposed. The sensor consists of a diaphragm and a string fixed inside a hollow cylinder attached to a pneumatic medium. While one side of the diaphragm is exposed to pneumatic pressure, the string is stretched on the other side. With the use of a microprocessor, the string is periodically excited through an electromagnet and the vibrating frequency is measured from the signal obtained at an optocoupler. The frequency is calibrated to indicate the pressure

Keywords

computerised instrumentation; frequency measurement; microcomputer applications; opto-isolators; pneumatic systems; pressure measurement; pressure transducers; vibration measurement; diaphragm; electromagnet; hollow cylinder; microprocessor; optocoupler controlled vibrating wire transducer; pneumatic medium; pneumatic pressure measurement; string; vibrating frequency; Electric variables measurement; Engine cylinders; Equations; Frequency; Microprocessors; Pressure control; Pressure measurement; Transducers; Vibration measurement; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE

Conference_Location

Hamamatsu

Print_ISBN

0-7803-1880-3

Type

conf

DOI

10.1109/IMTC.1994.351919

Filename

351919