DSP cross-correlator for use in a thermal flow meter

Author

Xu, Y. ; de Graaf, G. ; Wolffenbuttel, R.F.

Author_Institution

Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands

Volume

1

fYear

1996

fDate

1996

Firstpage

519

Abstract

The design realisation and performance of a thermal flowmeter using real-time Cross Correlation based on digital signal processing (DSP) are described. The system employs a hybrid circuit with a TMS320C50 DSP chip to interface a thermal flow meter to measure the flow velocity. A compact, high-speed and low-cost hardware implementation was obtained. Using this system data from two temperature sensors was sampled and cross-correlation Was performed within 384 msec and the flow velocity was calculated real-time with an inaccuracy smaller than 2% in a range from 2 mm/sec to over 50 mm/sec

Keywords

computer interfaces; computerised instrumentation; correlation methods; digital signal processing chips; flow measurement; flowmeters; peripheral interfaces; real-time systems; signal processing equipment; velocity measurement; DSP cross-correlator; NTC thermistor; TMS320C50 DSP chip; digital signal processing; flow velocity; real-time; thermal flow meter; Circuits; Digital signal processing; Digital signal processing chips; Fluid flow measurement; Hardware; Real time systems; Semiconductor device measurement; Signal design; Temperature sensors; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE

Conference_Location

Brussels

Print_ISBN

0-7803-3312-8

Type

conf

DOI

10.1109/IMTC.1996.507436

Filename

507436