Weight Variation Measurement Device for Physical Activity
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Solution Overview
Problem
Existing weight variation measurement devices are inadequate for accurately measuring small weight changes due to physical activities performed in short time periods, such as hours or minutes, as they use large units (100 g) and infrequent measurements, making it difficult to track variations in activities like running or exercise.
Innovation Solution
A measurement device that stores weight data measured in small units (10 g) before and after a physical activity, calculates and displays the variation amount, and uses regression analysis to fit the data into an approximate straight line or curve, allowing for precise display of weight changes over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weight measurement uses a large unit (100 g) and long time-interval (per month), then the device complexity is reduced and ease of operation is improved, but the measurement precision deteriorates and cannot accurately capture small weight variations due to short-duration physical activities
Solution Approach 1:
The patent segments the weight measurement process into multiple short-time-interval measurements during a single physical activity session. Instead of one monthly measurement, the system performs multiple measurements (e.g., every few minutes) throughout the activity, allowing precise tracking of weight changes that occur during exercise. This segmentation enables capture of small weight variations (as small as 10g) that would be missed by traditional single-point measurements.
2Measurement precision
If weight measurement is performed multiple times in short time-interval with small unit (10 g), then the measurement precision is improved, but the device complexity and data processing requirements increase
Solution Approach 1:
The patent introduces a control element as an intermediary that automatically processes the multiple weight measurements. This control element receives weight data from the measurement element, performs regression analysis to fit the data points to a straight line or curve, calculates the weight variation amount, and generates the display output. By automating the data processing through this intermediary control system, the patent reduces the manual data processing difficulty while maintaining high measurement precision through multiple frequent measurements.
3Ease of operation
If the measurement unit is 100 g and measurement interval is monthly, then the ease of operation is improved, but the ability to detect small weight changes during physical activity deteriorates
Solution Approach 1:
The patent changes the measurement parameters from traditional monthly/100g intervals to frequent/small-unit measurements (e.g., every few minutes at 10g precision). This parameter change allows the system to detect small weight variations during physical activities while maintaining ease of operation through automatic measurement and display. The control element automatically manages the frequent measurements and processes the data, so users benefit from high precision without the operational burden of manual frequent measurements.
Data Source
AI summary
A variation measurement device for a physical activity includes a display element that displays a variation amount of a weight data from a benchmark of the weight data, which varies depending on the physical activity of the measurement subject.