Title :
High-Precision Flow Measurement for an Ultrasonic Transit Time Flowmeter
Author :
Hua, Meng ; Hui, Wang ; Mingwei, Li
Author_Institution :
Sch. of Control Sci. & Eng., Dalian Univ. of Technol., Dalian, China
Abstract :
In order to realize high-precision and real-time flow measurement, in this paper according to the measurement principle of ultrasonic transit time method, a low-power microprocessor MSP430 is used as the core of this system, and a high-precision measurement chip TDC-GP2 is specially adopted to collect the time difference signals in real time, hereby we design a new ultrasonic transit time flow-meter. On the basis of advanced hardware design above, to further improve the accuracy of flow measurement, a digital signal processing algorithm based on wavelet transform is adopted to de-noise the measured signals, which is rapidly realized in DSP chip. The experimental results show that the proposed method can effectively improve the measurement accuracy and real time performance, and meet the measurement requirements of flow-meter.
Keywords :
digital signal processing chips; flow measurement; flowmeters; signal denoising; ultrasonic measurement; wavelet transforms; DSP chip; TDC-GP2; digital signal processing algorithm; high precision flow measurement; high precision measurement chip; low power microprocessor MSP430; measured signal denoising; time difference signals; ultrasonic transit time flow meter; ultrasonic transit time flowmeter; wavelet transform; Fluid flow measurement; Noise reduction; Semiconductor device measurement; Time measurement; Ultrasonic variables measurement; Wavelet transforms; measuring accuracy; transit time method; ultrasonic flowmeter; wavelet de-noising method;
Conference_Titel :
Intelligent System Design and Engineering Application (ISDEA), 2010 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-8333-4
DOI :
10.1109/ISDEA.2010.138