A large Flow Signal Processing and Measurement Method based on Ultrasonic Gas Meter
A large Flow Signal Processing and Measurement Method based on Ultrasonic Gas Meter
复制标题
基于超声波燃气表的大流量信号处理与测量方法
DOI：
10.1088/1742-6596/1607/1/012065
复制
发表时间：
2020-08
期刊：
影响因子：
--
通讯作者：
Meng Li
中科院分区：
文献类型：
--
作者：
Piao-xia Zhu;Yue-zhong Li;Yu-hua Zhang;Meng Li
Ultrasonic flowmeter is extensively used in petrochemical, metallurgical and other industries for its non-contact measurement, large measuring range, stable measurement results and no pressure loss. The time difference measurement method is adopted by the ultrasonic gas meter that can reduce the error caused by the variation of sound velocity with the temperature of the fluid. But there are some problems in the large flow point and small flow point in the time difference measurement method, such as low precision, low repeatability, poor stability. According to study the influence of flow velocity on ultrasonic echo signals, a method of variable threshold and variable gain based on peak detection is proposed and the prototype of gas ultrasonic flowmeter is designed in this paper. The national standard device, 100L automatic bell cover test device, is applied to verify the design scheme proposed in this paper. The experimental results indicates that the validity of variable threshold and variable gain ultrasonic signal processing method based on peak sampling is verified, in addition, the measurement accuracy and repeatability of the ultrasonic gas meter are enhanced at the point of large flow (large flow rate).
影响因子：
2.2
作者：
M. Takamoto;H. Ishikawa;K. Shimizu;H. Monji;G. Matsui
通讯作者：
M. Takamoto;H. Ishikawa;K. Shimizu;H. Monji;G. Matsui
DOI：
10.1109/i2mtc.2017.7969954
发表时间：
2017-05
期刊：
2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
影响因子：
--
作者：
Weiguo Zhao;Jieyong Yu;Shengyi Zhang;Chaochuan Huang;Jing-Wei Lin
通讯作者：
Weiguo Zhao;Jieyong Yu;Shengyi Zhang;Chaochuan Huang;Jing-Wei Lin
影响因子：
2.2
作者：
M. Reader-Harris
通讯作者：
M. Reader-Harris