Systems and methods for remotely measuring a liquid level using time-domain reflectometry (TDR)
US11428564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2015 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Oct 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2605
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A remote pulse TDR liquid level measurement system and method may include inserting a probe into a body of water. The probe has a probe/air interface, and the body of water includes an air/water interface. A narrow pulse is remotely transmitted to the probe via a coaxial cable. A first impedance mismatch is received from the probe/air interface in a form of a positive reflected pulse, and a second impedance mismatch is received from the air/water interface in a form of a negative reflected pulse. A time between the positive reflected pulse and the negative reflected pulse is calculated, and the time is converted to a distance, the distance being indicative of the water level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.