3-Axis Acceleration Sensor Fitness Assessment System
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Solution Overview
Problem
Existing fitness measurement instruments provide insufficient quantitative data and have limited utility, making it difficult to accurately assess fitness and physical balance in a comprehensive manner.
Innovation Solution
A fitness testing system utilizing a 3-axis acceleration sensor attached to the test subject, which transmits signals through RF communication to an assessment and analysis unit for processing, detecting maximum acceleration and repetition counts, and analyzing movements to provide quantitative assessment results, including rankings among test subjects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing fitness measurement instruments are used, then measurement function is provided, but quantitative assessment capability is insufficient
Solution Approach 1:
The patent replaces complex mechanical fitness measurement instruments with a mobile device-based acceleration sensor system. The acceleration sensor device attached to the subject's body captures motion data, which is then processed by a server to provide quantitative fitness assessment, eliminating the need for specialized mechanical equipment while improving measurement precision.
Solution Approach 2:
The patent makes mobile devices serve multiple functions: they act as acceleration sensors for fitness measurement, communication devices for data transmission, and processing units for exercise guidance. This multi-functionality allows existing mobile devices to replace dedicated fitness measurement instruments, reducing device complexity while maintaining quantitative assessment capability.
2Measurement precision
If traditional fitness test methods are used, then exercise guidance is provided, but accurate fitness measurement is difficult
Solution Approach 1:
The system enables self-service fitness testing where the subject attaches the acceleration sensor to their mobile device and performs exercises independently. The server automatically processes the acceleration data, provides real-time exercise guidance, and generates fitness assessment reports without requiring operators or specialized equipment, thus improving both measurement accuracy and convenience.
Solution Approach 2:
The server acts as an intermediary between the acceleration sensor device and the user. It receives raw acceleration data, processes it to extract fitness metrics, provides exercise guidance based on real-time measurements, and returns assessment results. This intermediary processing layer enables accurate fitness measurement while maintaining ease of operation through automated analysis.
3Measurement precision
If mobile devices with acceleration sensors are used, then quantitative fitness assessment is enabled, but device attachment and signal transmission complexity increases
Solution Approach 1:
The patent merges the acceleration sensor functionality with the mobile device itself. The mobile device's built-in acceleration sensor is utilized for fitness measurement, and its existing communication capabilities (WiFi, Bluetooth, cellular) are used for data transmission to the server. This merging eliminates the need for separate sensor devices and complex attachment mechanisms, reducing overall system complexity while maintaining quantitative assessment capability.
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 a quantitative assessment of fitness and physical balance, allowing for convenient and economical fitness testing, suitable for institutions promoting fitness and rehabilitation, and potentially integrating with smart devices for future applications.
Implementation Method 1
an acceleration sensor device has a 3-axis acceleration sensor, measures the 3-axis acceleration signals according to the movements of the test subject
Implementation Method 2
The belt holder has 'L' shape, and is located on the top and bottom parts at both left and right sides of the acceleration sensor device... The belt is inserted from a belt holder on one side, passed through the belt insertion unit, pulled out from the belt holder on the other side, and wrapped around the waist of the test subject
Data Source
AI summary
The present invention relates to a fitness testing system using an acceleration sensor, of which a mobile device containing an acceleration sensor is attached to the body of the test subject and the test subject is induced to perform an exercise according to the fitness test instructions provided through the fitness testing process installed in a personal computer during which the acceleration signals are measured through RF communication for an output of the fitness test and assessment results. For this purpose, the present invention embodies a fitness measurement system consisting of an acceleration sensor device with a 3-axis acceleration sensor that is attached to the test subject to detect the 3-axis acceleration signals produced according to the test subject's movement and transmits the signals through RF communication; and an assessment and analysis unit that receives 3-axis acceleration signals from the acceleration sensor device through a host gateway and detects the maximum acceleration from the 3-axis acceleration signals received as the exercise intensity; wherein the execution processing unit of the assessment and analysis unit, in case the test items is “balance”, receives the x-axis acceleration signals, which are related to the left and right movement of the test subject, and z-axis acceleration signals, which are related to the forward and backward movement, via the host gateway and detects the trajectory according to the input x- and z-axis acceleration signals and the maximum acceleration value according to the forward, backward, left and right movements.