Smart Meter Dual-Channel Switching for Communication Continuity
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Solution Overview
Problem
Existing smart meter systems face delays in data collection and reconfiguration when the cellular communication infrastructure is unavailable, leading to inefficiencies in data transmission and management.
Innovation Solution
Implementing a smart meter with dual communication interfaces, one via the internet and one via a cellular network, allowing switching between primary and secondary channels based on operational status, with a media converter as an intermediary for short-range communication, ensuring continuous data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single cellular communication interface is used for smart meter data transmission, then device complexity is reduced, but reliability deteriorates when cellular infrastructure is unavailable
Solution Approach 1:
The communication interface is segmented into two independent channels: a primary cellular communication interface and a secondary internet-based communication interface. Each interface operates independently through its own communication protocol and network infrastructure, allowing the system to maintain data transmission capability even when one channel fails. This segmentation directly resolves the contradiction by providing redundancy without requiring a completely complexified single interface.
Solution Approach 2:
The system dynamically changes communication parameters by switching between different communication protocols (cellular vs. internet-based) depending on channel availability. When the primary cellular channel is unavailable, the system automatically transitions to using the secondary internet channel, thereby maintaining reliability while managing complexity through adaptive parameter selection rather than permanent dual-interface complexity.
2Reliability
If dual communication interfaces are implemented for redundancy, then reliability improves, but device complexity increases
Solution Approach 1:
The patent merges two different communication technologies (cellular and internet-based) into a unified communication system with a single communication manager. This manager coordinates both interfaces, handles protocol conversions, and manages the switching logic, thereby providing redundancy while containing complexity through integrated management rather than separate independent systems.
Solution Approach 2:
A communication manager acts as an intermediary between the smart meter's processing unit and the two communication interfaces. This intermediary handles all the complexity of dual-interface management, including protocol conversions, channel selection, and coordination with the information system, thereby isolating the complexity from the core metering functions and maintaining overall system reliability.
3Productivity
If automatic switching between communication modes is implemented, then productivity is maintained during channel failures, but ease of operation deteriorates due to increased control complexity
Solution Approach 1:
The communication manager implements continuous feedback monitoring of channel availability and transmission status. It automatically detects when the primary cellular channel fails and switches to the secondary internet channel without human intervention. This feedback mechanism maintains productivity during failures while the automated nature of the switching reduces the operational burden on users.
Solution Approach 2:
The communication system performs self-service by automatically monitoring its own operational status and making autonomous decisions about channel switching. The communication manager continuously assesses channel availability and executes mode transitions without requiring external control or user input, thereby maintaining data collection productivity while simplifying operation through automation.
Data Source
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AI summary
A smart meter (211, 212) includes a first communication interface (230) enabling a first communication channel with an information system (110) using the Internet (101) via a residential gateway (201, 202), and a second communication interface (250) enabling a second communication channel using a cellular network (102). The smart meter (211, 212) implements a first communication mode in which one main communication channel is used to transmit data related to metering operations, and operational verification messages are transmitted on the other communication channel. In a second communication mode, the reverse is implemented.The smart meter (211, 212) switches to the second communication mode when the main communication channel becomes inoperative, and switches back to the first communication mode when at least one functionality check message receives an acknowledgment on the main communication channel.