A new ultrasonic water meter with window time adjustment algorithm

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Luo, Anhua^1 ; Jiang, Yanfu^2 ; Li, Zhongyang^3 ; Zhao, Weiguo^1

China Jiliang University, Hangzhou

310018, China^1

Hangzhou SECK Intelligent Technology Co. Ltd., Hangzhou

311121, China^2

Zhejiang Cangnan Instrument Group Co. Ltd., Cangnan, 325800, China^3

关键词: Echo signals;    Impact of noise;    Noise signals;    Received signals;    Thresholding;    Time adjustment algorithms;    Transit time;    Transit time measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/5/052070/pdf
DOI  :  10.1088/1757-899X/569/5/052070

来源: IOP

【 摘 要 】

The ultrasonic water meter with small pipeline is easily affected by the installation environment and noise signal. The short sound path, weak echo signal and different temperature gradient result in the decline of accuracy and stability. The traditional thresholding detection is easily flooded by noise signal, leading to the measurement of transit-time inaccurately, too. Aiming at these phenomenons, an algorithm is proposed utilizing a window time to slide through the received signal automatically with the U pipeline, which can effectively reduce the impact of noise signals on transit-time measurement, and improve the quality of signal obviously.