Smart Meter Metrological Data Hashing for Low-Bandwidth Transmission
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Solution Overview
Problem
The transmission of metrological data from smart meters to collecting servers often involves excessive metadata, leading to unnecessary bandwidth consumption, especially in noisy communication networks, due to frequent format changes in smart meters that are not efficiently managed.
Innovation Solution
Implementing a method where smart meters detect configuration changes, determine a hash code of metadata representing the transmission format, and send this hash code along with the data, allowing the collecting server to identify the format using a lookup table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metadata describing the format of metrological data is transmitted before the data themselves, then the collecting server can correctly interpret the data, but the volume of transmitted data becomes excessively large
Solution Approach 1:
The patent extracts only the essential identifying feature of the metadata (a characteristic value or hash code) and transmits it separately from the full metadata. This allows the server to identify the data format without receiving the complete metadata description, thus reducing transmitted volume while maintaining interpretation accuracy.
Solution Approach 2:
Instead of transmitting the original metadata directly, the patent uses a simplified representation (characteristic value or hash code) that serves as a reference key. The server uses this key to retrieve or identify the corresponding format information from its stored metadata database, eliminating the need to transmit redundant format description data.
2Adaptability or versatility
If configuration changes in smart meters are frequently accommodated, then the system becomes more adaptable, but bandwidth consumption increases due to repeated metadata transmissions
Solution Approach 1:
The patent performs preliminary hashing or extraction of the metadata's characteristic value when the configuration changes in the smart meter. This pre-processed identifier is then transmitted instead of the full metadata, allowing the system to adapt to configuration changes while minimizing the data volume that needs to be transmitted over the network.
Solution Approach 2:
The patent transforms the metadata from its original detailed format into a condensed parameter representation (hash code or characteristic value). This parameter transformation maintains the essential information needed for format identification while dramatically reducing the data size, enabling frequent configuration updates without proportional increases in bandwidth consumption.
Data Source
AI summary
A method for transmitting metrological data from a measuring device and to a collecting server, implemented in the measuring device configured for converting a physical quantity into metrological data, includes: detecting a modification of the configuration of the measuring device, in relation to metrological data to be transmitted; determining a series of information representing a transmission format of said metrological data to be transmitted; determining a hash code of the information representing the transmission format; sending, to the collecting device, the hash code and then the metrological data to be transmitted.