Method for improving the transmission quality between a data collector and a plurality of autonomous measuring units, and communication system

Abstract

The invention relates to a method for improving the transmission quality between a data collector (3) and a plurality of measuring units, in particular consumption measuring devices (2), in a communication system (1) with preferably bidirectional radio transmission with a first communication module (10), wherein the first communication module (10) is associated with the data collector (3), and twoor more second communication modules (17), wherein each second communication module (17) is associated with one measuring unit, wherein the second communication module (17) is provided for sending data to the first communication module (10) by means of radio signals, preferably in the form of at least one radio telegram (4) preferably comprising a plurality of data packet(s), wherein the first communication module (10) is provided for receiving the data from the second communication module (17), wherein the first communication module (10) comprises a first frequency reference device (11), wherein the second communication module (17) comprises a second frequency reference device (18), wherein the radio signals transferred from the second communication module (17) to the first communicationmodule (10) in the data transmission are dependent on the second frequency reference device (18), wherein at least one parameter of the radio signal sent out by the second communication module (17) and received by the first communication module (10), from the parameter group comprising bandwidth, data rate, data rate offset, temperature from the data packet, delta frequency, modulation index, and / or reception time by the first communication module (10), is measured, an error of the second frequency reference device (18) is estimated on the basis of the parameter measurement values or values derived therefrom, and the frequency of the first frequency reference device (11) and / or at least one parameter in the first communication module (10) from the group comprising data rate, data rate offset, modulation index and frequency shift is adjusted in such a way that the error of the second frequency reference device (18) or the parameter error dependent thereon is reduced or eliminated.

Description

technical field [0001] The invention relates to a method for improving the quality of transmission between a data collector and a plurality of autonomous measuring units according to the preamble of claim 1 and a corresponding communication system according to the preamble of claim 13 . The method and the communication system according to the invention are particularly suitable for detecting the consumption of heat or energy, electricity, gas or water by means of a consumption measuring device. Background technique [0002] Smart consumption meters (also referred to as smart meters) are consumption meters, for example for heat or energy, electricity, gas and water, which are connected to the supply network to the corresponding connected The user displays the actual consumption and connects to the communication network. Smart consumption meters have the advantage of eliminating manual meter readings and faster billing from suppliers based on actual consumption. Faster readi...

AI Technical Summary

Problems solved by technology

For example a quartz error of 50ppm in standard quartz results in a deviation of 4.3 seconds per day or 26 minutes per year

This in turn leads to an increase in the deviation of time synchronization, so the reception characteristics are increasingly degraded

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