Smart Meter Transmission Rate Control for Battery Life
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Solution Overview
Problem
Battery-powered smart meters face challenges in extending battery life due to increased energy demands from enhanced capabilities, as current battery technologies have not kept pace with these demands, leading to reduced operational periods without recharging or battery replacement.
Innovation Solution
Implementing techniques to adjust message size and transmission rates in battery-powered devices, such as smart meters, by removing or omitting data fields and adjusting transmission rates based on criteria like battery level, data receipt acknowledgment, and usage patterns to conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If smart meters continuously transmit data at high rates to maintain real-time monitoring capabilities, then data freshness and monitoring accuracy are improved, but battery consumption increases significantly
Solution Approach 1:
The patent implements dynamic transmission rate adjustment where the smart meter adapts its data transmission frequency based on battery charge levels. When battery charge is above a first threshold, the meter transmits at a first rate; when between thresholds, it transmits at a second rate; and when below a second threshold, it transmits at a third rate. This dynamic adaptation resolves the contradiction by making transmission behavior flexible rather than fixed, allowing the system to maintain data freshness when energy is abundant while conserving battery when energy is limited.
Solution Approach 2:
The patent changes the transmission rate parameter based on battery charge conditions. By monitoring battery charge levels and adjusting the transmission rate parameter accordingly, the system optimizes the balance between data freshness and energy consumption. This parameter change approach allows the smart meter to operate efficiently across different energy states without sacrificing monitoring capability entirely.
2Adaptability or versatility
If smart meters adopt new capabilities and features to enhance functionality, then device versatility and monitoring capabilities are improved, but energy demand increases beyond what current battery technologies can support
Solution Approach 1:
The patent enables battery-powered smart meters to adopt advanced capabilities by implementing dynamic operation modes that adapt to battery charge levels. The meter can operate in full functionality mode when charged, in reduced functionality mode when charge is moderate, and in minimal operation mode when charge is low. This dynamic capability adaptation allows the device to leverage new features when energy is available while ensuring continuous operation even when energy is constrained.
Solution Approach 2:
The patent employs periodic transmission intervals that are adjusted based on battery charge levels. Instead of continuous high-rate transmission, the system uses periodic transmissions at varying frequencies. This periodic action reduces average power consumption while maintaining the ability to utilize advanced metering capabilities when energy is sufficient.
3Reliability
If smart meters transmit data frequently to ensure reliable utility communication, then communication reliability is improved, but battery life is reduced
Solution Approach 1:
The patent implements dynamic transmission rate adjustment based on battery charge thresholds. The system transitions between different transmission rates (first rate, second rate, third rate) depending on whether battery charge is above the first threshold, between thresholds, or below the second threshold. This dynamic approach maintains communication reliability when energy is sufficient while extending battery life when energy is limited.
Solution Approach 2:
The patent incorporates feedback mechanisms where the smart meter monitors its own battery charge level and adjusts transmission behavior accordingly. This self-regulating feedback loop ensures that communication reliability is maintained within the constraints of available energy, allowing the system to adapt its transmission schedule based on real-time battery status.
Data Source
AI summary
Disclosed are techniques to conserve battery of an endpoint device. Example techniques include adjusting the size of messages transmitted by an endpoint device and/or adjusting the transmission rate of an endpoint device. In some configurations, the one or more criteria are used by an endpoint device to determine what data fields to include within a message and/or adjust a transmission rate associated with the transmission of messages by the endpoint device. For instance, the one or more criteria may include the battery level of the device, the time of year, whether the data has already been transmitted by the endpoint device, whether the data has been acknowledged as received by another device, whether the endpoint device has been instructed by another device to reduce the message size and/or adjust the transmission rate, and the like.