Direct measurement ultrasonic velocity measuring system
US5557536A · kind A · utility
9Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Nov 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/663
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.