Method and apparatus for bidirectional communication between measuring devices and a data collector

US10805142B2 · kind B2 · utility

Assignee

• Diehl Metering Systems GmbH · DE

Inventors

• Hristo Petkov · Nuremberg, DE
• Thomas Lautenbacher · Erlangen, DE
• Thomas Kauppert · Nuremberg, DE
• Klaus Gottschalk · Winkelhaid, DE
• Raphael Mzyk · Kammerstein, DE

Key dates

• Filing date: Oct 26, 2018
• Grant date: Oct 13, 2020
• Expiry date: Oct 26, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y04S20/30
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

To optimally receive smart meter control messages transmitted by a concentrator, in a meter having a transceiver for bidirectional data interchange, despite its minimal resources, a current modulation reference frequency which is subject to drift is shifted by the instantaneous frequency difference between the current transmitter-side reference frequency and the current transceiver-side reference frequency in the concentrator. Therefore, the current reference frequencies correspond in the downlink without having to intervene in the meter. This frequency difference in the concentrator is obtained by comparing the current receiver-side demodulation reference frequency with the current transmitter-side reference frequency, and the current transceiver-side reference frequency, on the other hand, from messages from the transmitter of the concentrator and from the transceiver of the meter which are received using the receiver of the concentrator. A frequency-measuring comparator only needs to be connected upstream and downstream of the demodulator in the concentrator for this purpose.