Weight Scale Daily Fluctuation Trend Analysis
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Solution Overview
Problem
Existing weight scales fail to accurately grasp weight change trends due to daily fluctuations, requiring continuous measurement over a long period, and do not provide users with clear guidance on achieving desired weight changes.
Innovation Solution
A weight scale that measures and displays the percentage of days within a predetermined weight fluctuation range between morning and night, using a reference range of ±500 grams, allowing users to understand their weight change trend and lifestyle habits through graphical and animated displays, and adjusts the reference range based on individual progress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weight measurement is performed continuously for a long period to grasp the correct trend, then measurement precision is improved, but loss of time increases and motivation is difficult to maintain
Solution Approach 1:
The patent extracts and displays only the essential information needed for motivation - the percentage of days within reference range and achievement scores - rather than requiring users to analyze long-term continuous data. This selective extraction allows trend grasping without requiring long measurement periods.
Solution Approach 2:
The patent changes the evaluation parameter from absolute weight change to a normalized percentage metric (days within reference range / total days). This parameter transformation enables meaningful assessment with shorter measurement periods by focusing on relative performance rather than absolute trends.
2Measurement precision
If daily fluctuation is taken into consideration by comparing with reference data, then measurement precision is improved, but device complexity increases and reference data creation requires continuous measurement
Solution Approach 1:
The system automatically creates and updates reference data from the user's own measurement history without requiring manual input or complex external processing. The reference range is self-adjusting based on accumulated data, reducing system complexity while maintaining precision.
Solution Approach 2:
The patent establishes a predetermined reference range (±500g) that can be applied immediately without requiring extensive preliminary data collection. This preliminary parameter setting allows the system to provide meaningful feedback from the start while continuing to refine the reference range over time.
3Loss of information
If only weight value and body composition value history is displayed, then information completeness is maintained, but ease of operation decreases as users cannot easily understand how to achieve desired weight change
Solution Approach 1:
The patent uses color-coded visual indicators (green for achievement, red for non-achievement) to provide intuitive feedback on weight management progress. This visual encoding transforms raw data into easily understandable guidance without losing underlying measurement information.
Solution Approach 2:
The system provides immediate feedback through achievement scores and percentage displays that directly indicate whether the user is meeting their weight management goals. This feedback mechanism guides user behavior without requiring complex data interpretation.
Data Source
AI summary
A weight scale includes weight measurement means, storage means for storing a weight measurement value along with a measurement day and time, determination means for determining whether a fluctuation range of the weight measurement value in the same day is within a predetermined reference range, and display means for displaying a percentage of days determined that the daily weight fluctuation is within the reference range. In this manner, a trend in weight change can be grasped even with the measurement of a relatively short period.