Trampoline Bed Calibration Using Laser Markers
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Solution Overview
Problem
Current scoring systems in trampolining cannot directly measure the landing position on a trampoline bed unit, making it difficult to accurately determine the region corresponding to the calculated landing position for scoring purposes.
Innovation Solution
A calibration method using a laser ranging sensor to measure markers on the trampoline bed unit, calculating coordinates in a first coordinate system, and converting them into a second coordinate system with the center of the bed unit as the origin, allowing for precise determination of the landing position and corresponding score based on predefined regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a laser ranging sensor is used to measure markers on the trampoline bed unit, then measurement precision of landing position is improved, but device complexity increases due to coordinate system conversion requirements
Solution Approach 1:
The patent applies preliminary action by pre-defining the coordinate system conversion parameters and relationships before actual measurement. The conversion formula between the sensor coordinate system and trampoline coordinate system is established in advance, allowing the system to directly compute landing positions without complex real-time transformations during competition.
Solution Approach 2:
The patent uses markers attached to the trampoline bed unit as intermediaries. These markers serve as reference points that bridge the sensor coordinate system and the trampoline coordinate system, enabling accurate position measurement through a defined transformation relationship rather than direct complex coordinate conversion.
2Measurement precision
If coordinate conversion is implemented to determine landing position regions, then scoring accuracy is improved, but calculation time increases
Solution Approach 1:
The patent divides the trampoline bed unit into predetermined scoring regions in advance and establishes the coordinate boundaries for each region before competition. This allows the system to simply check which predefined region the calculated landing position falls into, rather than performing complex real-time region determination calculations.
Solution Approach 2:
The patent calculates the complete coordinate transformation and landing position with higher precision than minimum requirements, then uses this comprehensive calculation result to determine the scoring region. This approach ensures accuracy while avoiding the need for multiple separate calculation steps.
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 scoring by determining the region of the landing position on the trampoline bed unit, improving the fairness and precision of scoring in trampolining competitions.
Implementation Method 1
measuring, with a laser ranging sensor, markers attached to at least two predetermined positions of a bed portion of a trampoline
Data Source
AI summary
A calibration method implemented by a computer, includes: measuring, with a laser ranging sensor, markers attached to at least two predetermined positions of a bed portion of a trampoline and calculating coordinates of the markers in a first coordinate system with a position of the laser ranging sensor being an origin; and calculating a conversion parameter to convert coordinates of respective positions of the first coordinate system into coordinates of respective positions of a second coordinate system with a center position of the bed portion being an origin based on a relationship between the calculated coordinates of the markers and the at least two predetermined positions of the bed portion.