发明名称 |
Direct measurement ultrasonic velocity measuring system |
摘要 |
To determine the average velocity of a fluid stream, an ultrasonic signal is transmitted into the fluid and reflected ultrasonic signal received. The signals are mixed with a frequency of the transmitted ultrasonic signals. A Fourier transform is performed on the signals, the largest coefficient used to normalize the signal and certain of the weighted signals are averaged.
|
申请公布号 |
US5557536(A) |
申请公布日期 |
1996.09.17 |
申请号 |
US19940347282 |
申请日期 |
1994.11.30 |
申请人 |
ISCO, INC. |
发明人 |
NABITY, FREDERICK A.;FRITZ, LARRY L.;CARSON, DOUGLAS T. |
分类号 |
G01F1/00;G01F1/66;G01P5/24;(IPC1-7):G01F23/28 |
主分类号 |
G01F1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|