Step Count Measuring System Battery Replacement Time Accuracy
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Solution Overview
Problem
Existing step count measuring systems face inaccuracies in recording time due to battery replacement, as they fail to account for the time gap between the old and new battery, leading to discrepancies in step count data.
Innovation Solution
A step count measuring system that includes a pedometer and a managing apparatus capable of communicating, where the pedometer distinguishes between initial and post-reset time data, allowing the managing apparatus to set recording times accurately based on both the pedometer's time and its own time, ensuring continuity and accuracy post-battery replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If recording time is added to step count using only pedometer time or external terminal time as reference, then the system is simple to operate, but accuracy of recording time deteriorates when battery is replaced
Solution Approach 1:
The patent divides time data into two distinct segments: first time data recorded before battery replacement and second time data recorded after battery replacement. This segmentation allows the system to handle time discontinuities caused by battery replacement by treating pre- and post-replacement time periods separately, thereby maintaining accurate recording time attribution for step counts across the battery replacement event.
Solution Approach 2:
The patent performs preliminary action by storing the pedometer's time information (first time data) before battery replacement occurs. This pre-stored time data is then preserved and associated with step counts recorded after battery replacement, allowing the system to maintain accurate time attribution without requiring continuous pedometer operation through the battery replacement event.
2Measurement precision
If pedometer time is used for recording time, then cost of pedometer can be reduced, but accuracy of recording time deteriorates due to time gap from battery replacement
Solution Approach 1:
The patent introduces an intermediary mechanism where the managing apparatus acts as a mediator between the pedometer's time data and the final recording time assignment. The managing apparatus receives both the pedometer's first time data and its own second time data, then intelligently assigns appropriate recording times to step counts based on whether they occurred before or after battery replacement, thereby achieving accurate time attribution without requiring the pedometer to maintain high-precision timekeeping through battery replacement.
Solution Approach 2:
The patent creates a copy of the pedometer's time information (first time data) and stores it in the managing apparatus before battery replacement. This copied time data is then preserved and used to assign accurate recording times to step counts recorded after battery replacement, eliminating the need for the pedometer to maintain continuous accurate timekeeping and allowing use of lower-cost timekeeping components.
3Measurement precision
If blank time from battery replacement is not considered, then processing is simpler, but accuracy of recording time before and after battery replacement deteriorates
Solution Approach 1:
The patent implements a dynamic time assignment approach where the system automatically switches between using first time data (before battery replacement) and second time data (after battery replacement) based on the timing of step count events. This dynamic adaptation allows the system to maintain accurate recording time assignment throughout the battery replacement process without requiring complex manual intervention or reducing processing efficiency.
Data Source
AI summary
A step count measuring system includes a pedometer and a step count managing apparatus which are able to communicate with each other. In the pedometer, a step count value sequentially detected for each unit of time is stored, and a time counted in the pedometer is stored as first time data by being brought into associated with each of the step count values. When a battery is replaced in the pedometer, a reset is executed to start initialization processing, and the time stored as first time data is stored as second time data which can be discriminated from the first time data. A recording time of each of the step count values being associated with the first time data before the initialization processing is set on the basis of the time counted by the step count managing apparatus, and a recording time of each of the step count values being associated with the second time data after the initialization processing is set on the basis of the second time data.