Electronic Device Pause Detection with Dual Speed Thresholds
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Solution Overview
Problem
Existing systems struggle to accurately determine whether a user is in a moving or pause state due to measurement errors in positioning, leading to erroneous determinations.
Innovation Solution
An electronic device with a speed acquisition unit and processor that uses distinct speed thresholds and determination values to differentiate between moving and pause states, including pause and moving speed thresholds, determination values, and counters to track state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a speed threshold is used to determine pause state, then pause detection is enabled, but measurement errors cause erroneous determinations
Solution Approach 1:
The system performs preliminary actions by counting the number of times speed is below the threshold before making a final pause determination. This preliminary counting mechanism filters out transient measurement errors and confirms that the pause condition is sustained, not just a momentary fluctuation in speed measurement.
Solution Approach 2:
The system uses feedback by continuously monitoring speed measurements and adjusting the determination based on the count of consecutive threshold violations. The feedback loop ensures that pause state is only confirmed when the threshold is violated multiple times, providing a self-correcting mechanism against measurement errors.
2Measurement precision
If distinct determination values are used for moving and pause states, then state transition accuracy is improved, but system complexity increases
Solution Approach 1:
The determination system is segmented into distinct components: a pause determination value for detecting pause state transitions and a moving determination value for detecting moving state transitions. This segmentation allows each threshold to be optimized for its specific function, improving overall accuracy while maintaining clear separation of concerns in the logic structure.
Solution Approach 2:
Different determination values are applied locally to different state transitions. The pause determination value is specifically tuned for detecting transitions to pause state, while the moving determination value is tuned for transitions to moving state. This local optimization ensures that each transition type is detected with the appropriate sensitivity.
Data Source
AI summary
An electronic device which is capable of determining whether a user is moving or stationary, includes a speed acquisition unit that acquires a user's moving speed and a processor that determines whether the user is in a moving state or in a pause state. In the moving state, the processor determines that a transition from the moving state to the pause state has occurred in the case where the moving speed acquired by the speed acquisition unit is less than the pause speed threshold. In the pause state, the processor determines that a transition from the pause state to the moving state has occurred in the case where the moving speed acquired by the speed acquisition unit is equal to or more than the moving speed threshold.