Dynamic Battery State Detection for Activity Monitors
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Solution Overview
Problem
Existing activity monitoring devices face challenges in accurately managing battery state and power consumption, leading to inaccurate battery life estimates and inefficient power usage, especially during dynamic charge and discharge cycles.
Innovation Solution
The implementation of a dynamic battery state detection system that uses voltage measurements and filtered values to update battery charge tables, allowing for real-time monitoring and management of battery state changes, and prioritizing function deactivation to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dynamic battery state detection with voltage measurements and filtered values is implemented, then battery life estimate accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic battery state detection by continuously monitoring voltage measurements and applying filtered values that adapt to changing battery conditions. The system updates battery charge tables in real-time based on observed voltage patterns during charge and discharge cycles, allowing accurate battery life estimation without requiring complex static lookup tables for every possible state.
Solution Approach 2:
The system employs feedback mechanisms where voltage measurements are continuously taken, filtered through processing algorithms, and used to update battery state information. The filtered values provide feedback about actual battery behavior, which is then used to refine charge table data and improve subsequent battery life predictions, creating a self-correcting system.
2Loss of energy
If real-time monitoring and management of battery state changes is implemented, then power usage optimization is improved, but use of energy increases
Solution Approach 1:
The patent implements periodic voltage measurements rather than continuous monitoring, taking samples at intervals during battery operation. The system updates battery state information at specific checkpoints during charge and discharge cycles, reducing the energy overhead of monitoring while still capturing sufficient data to maintain accurate battery life estimates and optimize power usage.
3Measurement precision
If battery charge tables are updated with filtered voltage values, then state of charge detection accuracy is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent introduces filtered voltage values as an intermediary between raw voltage measurements and battery state determination. The filtering process smooths out measurement noise and variations, creating a more stable intermediate value that is used to update charge tables. This intermediary layer reduces the impact of manufacturing tolerances and measurement imperfections on the final state of charge accuracy.
Data Source
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AI summary
Batteries for an athletic activity monitoring device may be managed in both charged and discharged state to provide more accurate state information and/or expected charge times. Additionally or alternatively, various power management processes may be executed to maximize an amount of battery charge remaining.