Dynamic Weight Measurement via Force and Acceleration Sensors
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Solution Overview
Problem
Conventional weight measurement systems require the measurement target to be still, limiting their convenience and flexibility in terms of measurement environment.
Innovation Solution
A measurement information output system using force sensors to detect the impact generated by a measurement target's motion and an acceleration sensor to detect acceleration, allowing for weight computation and output even when the target is not standing still, utilizing an arithmetic unit to process the detected force and acceleration values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a load cell is used to measure weight, then measurement precision is improved, but the measurement target must be still, reducing ease of operation
Solution Approach 1:
The patent transitions from a static measurement model to a dynamic one by incorporating acceleration sensors that detect motion during weight measurement. The system processes force sensor data combined with acceleration data to calculate weight, enabling accurate measurement even when the measurement target is moving, thus resolving the contradiction between measurement precision and ease of operation
Solution Approach 2:
The patent changes the measurement parameters by adding acceleration as a new variable to the weight calculation. Instead of relying solely on static force measurements, the system uses both force sensor data and acceleration sensor data to compute weight, allowing measurement during motion while maintaining precision
2Measurement precision
If conventional weight measurement systems are used, then measurement precision is maintained, but adaptability to different measurement environments is reduced
Solution Approach 1:
The patent creates a universal measurement system that can function in multiple scenarios - both static and dynamic measurement environments. By integrating force sensors, acceleration sensors, and motion detection algorithms, the system adapts to different measurement conditions (walking, running, standing still) while maintaining measurement precision across all these environments
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate weight measurement with minimal environmental restrictions, providing a highly convenient and portable weight measurement system that can track weight changes effectively.
Implementation Method 1
A measurement system which uses a load cell measures a weight by taking advantage of distortion which occurs at a portion which receives a load
Implementation Method 2
an acceleration sensor arranged so as to detect acceleration of the measurement target
Data Source
AI summary
A measurement information output system comprises an input unit and an output unit. The input unit is configured to input, to an arithmetic unit, a detected force value indicating the magnitude of force detected by one or more force sensors arranged so as to receive impact by motion of a measurement target and a detected acceleration value indicating the acceleration of the measurement target detected by an acceleration sensor arranged so as to detect the acceleration of the measurement target. The arithmetic unit is configured to compute the weight of the measurement target on the basis of the detected force value and the detected acceleration value. The output unit is configured to output, as a measured weight value, the weight of the measurement target computed by the arithmetic unit.