Title :
A New Design for Ultrasonic Gas Flowmeter
Author :
Ha, Zhang ; Gu, Yu ; Zhou, Kangyuan ; Shi, Jun
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Abstract :
An ultrasonic gas flowmeter with high precision was designed for the situation of small tube caliber and fluctuating flow speed. Both weak signal detection and advanced high frequency CPLD circuit were used in this design. The flowmeter had the features of digital automatic gain control (AGC), adaptive error correction and high frequency counting. It worked in multiple MCU pipeline structure and provided several standard industrial output interfaces. The tests in industrial environment showed that its maximum measure range was plusmn30m/s and its precision was plusmn0.5%
Keywords :
flowmeters; pipe flow; ultrasonic measurement; CPLD circuit; MCU pipeline structure; adaptive error correction; complex programmable logic device; digital automatic gain control; fluctuating flow speed; high frequency counting; microcontroller unit; standard industrial output interface; tube caliber; ultrasonic gas flowmeter; weak signal detection; Circuits; Design engineering; Electron tubes; Error correction; Frequency; Gain control; Information science; Programmable control; Signal design; Signal detection; digital AGC; error correction; high frequency counting; ultrasonic flowmeter;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1713388
