Ball With Embedded Nine-Axis Sensor for Movement Analysis
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Solution Overview
Problem
Existing ball monitoring systems face challenges in accurately detecting and recording movement while maintaining the ball's weight, balance, and durability due to the need for incorporating sensors and control devices, which complicates the integration of necessary hardware.
Innovation Solution
A system comprising a ball with a nine-axis sensor (triaxial acceleration, gyro, and geomagnetic sensors) that wirelessly transmits data to a mobile terminal, which acquires external information to generate comprehensive ball movement data, allowing for accurate analysis and recording of the ball's movement without compromising the ball's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors and control devices are incorporated into the ball to accurately detect movement, then measurement precision is improved, but device complexity and weight increase
Solution Approach 1:
The system divides functionality between the ball and mobile terminal. The ball contains only essential sensors (acceleration, gyro, geomagnetic) for detecting movement, while the mobile terminal handles complex processing, data association with external information, and analysis. This segmentation reduces ball complexity while maintaining measurement precision.
Solution Approach 2:
The mobile terminal acts as an intermediary between the ball's sensors and the final movement analysis. It receives sensor data, associates it with external information (flight direction, distance), and generates comprehensive ball movement data, thereby simplifying the ball's hardware requirements.
2Measurement precision
If multiple sensors and batteries are incorporated into the ball to enable accurate detection, then measurement precision is improved, but the ball's weight and balance are compromised
Solution Approach 1:
The system segments heavy components (processing unit, large battery) from the ball and places them in the mobile terminal. The ball retains only minimal sensing components, significantly reducing its weight while preserving measurement precision through wireless data transmission.
3Measurement precision
If additional sensors are added to the ball to detect external environment information, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The mobile terminal serves as an intermediary that acquires external environment information (flight direction, distance, position) independently and associates it with the ball's sensor data. This approach achieves comprehensive measurement precision without adding complex sensors to the ball.
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 precise detection and recording of the ball's movement, including angular velocity, acceleration, and rotational state, while maintaining the ball's weight and balance, by combining sensor data with external environment information, allowing for real-time and retrospective analysis of flight states and pitching motions.
Implementation Method 1
a first sensor that functions as at least a triaxial acceleration sensor
Implementation Method 2
a triaxial gyro sensor
Implementation Method 3
a triaxial geomagnetic sensor
Implementation Method 4
a first communication unit that wirelessly transmits sensor data detected by the first sensor
Data Source
AI summary
There is provided a system (1) including a ball (10), which incorporates a first sensor that functions as at least a triaxial acceleration sensor, a triaxial gyro sensor, and a triaxial geomagnetic sensor and also includes a first communication unit (16) that wirelessly transmits sensor data detected by the first sensor; and a mobile terminal (20) including a second communication unit (21) that is paired with the first communication unit. The mobile terminal includes: a unit (61) that acquires external information indicating an environment in which the paired ball moves independently; and a unit (63) that generates ball movement data (55) of the paired ball in which the sensor data of the paired ball obtained via the first communication unit and the second communication unit is associated with the external information.