Pulsed level gauge system with adaptive transceiver control

US8844352B2 · kind B2 · utility

Assignee

• ROSEMOUNT TANK RADAR AB · SE

Inventors

• Leif Nilsson · Lidingö, SE
• Håkan Nyberg · Linköping, SE
• Håkan Delin · Linköping, SE

Key dates

• Filing date: Jun 18, 2012
• Grant date: Sep 30, 2014
• Expiry date: Apr 23, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/88
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The method comprises the steps of generating a transmission signal; propagating the transmission signal towards the product; receiving a reflected signal; providing a reference signal exhibiting a time-varying phase difference in relation to the transmission signal; forming a measurement signal; and determining the filling level based on the measurement signal. The method further comprises the steps of: determining a reduced time period comprising a time when the time-varying phase difference corresponds to an anticipated filling level, the reduced time period being shorter than the measurement sweep time period; controlling the level gauge system to change from a low-power state to a high-power state at a start of the reduced time period; and controlling the level gauge system to change back from the high-power state to the low-power state at an end of the reduced time period.