Patent · US Active

Energy storage at elevated voltage in a radar level gauge

US8688279B2 · kind B2 · utility

5Cited by

8References

15Claims

0Family size

Assignee

ROSEMOUNT TANK RADAR AB · SE

Inventors

Leif Nilsson · Lidingö, SE
Thomas Lundin · Borensberg, SE

Key dates

Filing date	Oct 21, 2009
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Apr 30, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/345
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A power management circuitry for a radar level gauge including a first voltage converter, having a low-voltage end for receiving a drive voltage from a power interface and a high-voltage end for supplying an intermediate voltage higher than the required operating voltage, a temporary energy store arranged to be charged by the intermediate voltage, a second voltage converter, having a high-voltage end for receiving an input voltage from the energy store, and a low-voltage end for providing the operating voltage lower than the input voltage.By storing energy at a higher voltage, a different type of energy store (e.g. low capacity capacitor) may be used. As a consequence, the cost and start-up time of the energy store is significantly reduced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.