Method and system for processing measurement signals to obtain a value for physical parameter
US6481289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jan 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a measurement system wherein time-varying physical signals containing frequency information related to a physical parameter of an object are measured to obtain corresponding time-varying measurement signals, a method and system are disclosed for processing the measurement signals to obtain a value for the physical parameter by first extracting the frequency information from the measurement signals. The frequency information includes at least one desired frequency and its amplitude and decay rate. Then, the frequency information is converted to a value for the physical parameter. The measurement signals are discrete time ultrasonic signals. Extraction is performed by transforming the ultrasonic signals to a Z-domain and converting at least one zero or pole in the Z-domain to the at least one frequency and its decay rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.