Pulsed radar level gauge system and method for energy efficient filling level determination
US8044844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/406
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention sets forth a method of determining a filling level of a product contained in a tank using a radar level gauge system. The steps include generating a transmission signal using first pulse generating circuitry outputting a first signal having a first oscillation frequency having a first pulse repetition frequency. The invention uses a second pulse generating circuitry having a resonator element having an input and an output, a reference signal in the form of a second pulse train having a second pulse repetition frequency which differs from the first pulse repetition frequency by a predetermined frequency difference. The invention forms a measurement signal including a sequence of values representing a time correlation between a pulse of the reference signal and the reflected signal, and determines the filling level based on the measurement signal. The step of generating the reference signal includes providing the first signal to the input of the resonator element in the second pulse generating circuitry, monitoring an output signal from the resonator element, the output signal substantially corresponding to the first signal being delayed by a time delay, controlling at …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.