Transducer surface mapping
US7535794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Aug 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method for adjusting the output of a phased array ultrasonic transducer using surface mapping. The transducer surface is mapped using a sensor, such as a hydrophone, to determine the actual location of each transducer element relative to the expected location of each transducer element. Mapping can be performed by measuring a distance between a hydrophone and each transducer element. At least one of the hydrophone and the transducer are moveable relative to each other to map the transducer surface. A determination is made whether the actual location of a transducer element differs from the expected location. Drive signals of certain transducer elements having actual locations that differ from expected locations are adjusted to control the output of the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.