Partial probe mapping
US5973637A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jan 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for processing a time domain reflectometry (TDR) signal having a plurality of reflection pulses to generate a valid output result corresponding to a process variable for a material in a vessel. The method includes the steps of determining a background signal for a probe and detecting a sample TDR signal for the probe in the vessel. At least one transition point is established on the sample TDR signal and the background signal. A portion of the sample TDR signal on one side of the at least one transition point is combined with a portion of the background signal on the other side of the at least one transition point to establish an initial boundary signal, and the initial boundary signal is stored. The method also includes the steps of detecting the TDR signal and calculating the output result using the initial boundary signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.