Dynamic Sampling Rate Control for Wearable Exercise Sensors
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Solution Overview
Problem
Wearable exercise sensors face challenges in extending battery life when power consumption is high, often requiring reduction in sampling rates or device shutdown, which can impact data accuracy and user experience.
Innovation Solution
Incorporating a battery remaining amount acquisition device, time information acquisition device, and electric power control device that dynamically adjusts the sampling rate based on planned exercise duration and battery capacity, ensuring data collection only during scheduled exercise times to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the sampling rate is decreased or sensor is stopped to reduce power consumption, then battery life is extended, but data accuracy and measurement precision deteriorate
Solution Approach 1:
The patent implements dynamic adjustment of sampling rates based on real-time battery remaining amounts. The control device switches between multiple sampling rates (first, second, third rates) according to battery status, allowing the system to maintain high data accuracy when battery is sufficient while extending operation time when battery is low, thus resolving the contradiction between measurement precision and battery life
Solution Approach 2:
The system changes the sampling rate parameter dynamically based on battery remaining amount thresholds. When battery remaining amount is between first and second thresholds, a moderate sampling rate is used; when between second and third thresholds, a lower sampling rate is applied; this parameter adaptation resolves the contradiction by adjusting measurement intensity to available energy
2Measurement precision
If the sampling rate is maintained at high level for continuous data collection, then data accuracy is maintained, but power consumption increases
Solution Approach 1:
The system dynamically adjusts sampling rates based on battery status rather than maintaining a fixed high sampling rate. The control device selects from multiple sampling rates according to real-time battery remaining amount, ensuring data accuracy is maintained when energy is sufficient while reducing power consumption when battery is low
Solution Approach 2:
The system applies partial sampling action by using different sampling rates appropriate to battery status. Instead of always using maximum sampling rate, it uses only the necessary sampling intensity for current battery conditions, reducing excessive power consumption while maintaining adequate data accuracy
Data Source
AI summary
An exercise information acquisition equipment of the present invention is an electronic equipment which builds therein a battery, is driven with electric power of the battery and acquires information relating to an exercise that a user performs and includes a battery remaining amount acquisition device which acquires a battery remaining amount of the battery, a time information acquisition device which acquires information relating to a time taken for the exercise which is information that how long the user plans to perform the exercise and an electric power control device which controls an operation pertaining to a power consumption reduction of the electronic equipment on the basis of the battery remaining amount and the information relating to the time taken for the exercise.