Method and apparatus for calibrating an ultrasonic sensing system used to detect moving objects
US7685861B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2007 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Jul 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02433
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration device is described for use in calibrating an ultrasonic pulse echo apparatus for detecting a moving object in a fluid, where the ultrasonic pulse echo apparatus includes an ultrasonic transducer and calibration circuitry. A connector has a first end for connecting with a first fluid conduit and a second end for connecting with a second fluid conduit. A cavity between the first and second ends permits the fluid containing the moving object from the first conduit to flow through the connector cavity to the second fluid conduit. A first calibration sphere is positioned relative to the connector for reflecting an ultrasonic pulse signal transmitted by the ultrasonic transducer. The reflected ultrasonic pulse signal is useable by the calibration circuitry to calibrate the ultrasonic pulse echo apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.