Patent · US Active

Method for control of phase in an oscillatory circuit

US9252787B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

Martin Urban · Bad Kötzting, DE
Tobias Brengartner · Emmendingen, DE

Key dates

Filing date	Jun 20, 2011
Grant date	Feb 2, 2016
Priority date	—
Expiry date	May 5, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01F23/2966
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for the control of a phase shift between a transmission signal and a received signal of an electromechanical transducer unit to a predetermined value in an oscillatory circuit. The received signal is sampled at discrete points in time predetermined based on the transmission signal. Sampled voltage values are compared with desired values, which the received signal assumes at the respective points in time, when the predetermined phase shift is present, and, in the case of a deviation of a voltage value from its desired value, based on the sign of the deviation, the frequency of the transmission signal is decreased or increased.

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