Laser Projection System for Real-Time Field Marking
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Solution Overview
Problem
Current systems for projecting boundary markings and reference lines in outdoor sporting events, such as football, are inefficient and inaccurate due to reliance on traditional chain-based measurements, which cause delays and do not provide real-time visibility for spectators, and existing augmented reality solutions do not offer a real-world equivalent visible to attendees.
Innovation Solution
A system using movable laser projectors that can project a visible first down line and other markings onto a field, integrated with detection and reporting systems, and augmented reality methods to provide real-time visibility of the line to all spectators, ensuring safety and accuracy while conforming to eye-safety regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional chain-based measurements are used to mark boundary lines, then the markings are visible and tangible, but the process causes game delays and is inefficient
Solution Approach 1:
The patent replaces the mechanical chain-based measurement system with a laser projection system that uses optical technology to mark boundary lines and first-down positions. The laser projector automatically projects visible lines onto the field surface, eliminating the need for manual chain measurement and physical markers, thereby significantly improving measurement efficiency and eliminating game delays.
Solution Approach 2:
The laser projection system pre-projects the first-down line and boundary markings before the play begins, allowing officials and spectators to see the exact positions in advance. This preliminary marking eliminates the need for time-consuming post-play measurements and chain dragging, as all position information is already visually established on the field.
2Loss of information
If augmented reality solutions are used to display the first down line, then real-time visibility is provided to spectators, but the line is not visible in the real world to attendees
Solution Approach 1:
The patent merges augmented reality technology with physical laser projection to create a hybrid system. The laser projector casts a visible first-down line onto the actual field surface that can be seen by all spectators in the stadium, while simultaneously transmitting this visual information to augmented reality devices for enhanced viewing. This combination ensures both real-world visibility and digital enhancement, solving the limitation of AR-only solutions.
3Measurement precision
If laser projectors are used to project visible lines, then real-time accuracy and visibility are improved, but eye-safety regulations must be strictly conformed to
Solution Approach 1:
The patent employs controlled laser parameters including specific wavelength selection, power level regulation, and pulse duration optimization to achieve visible line projection while maintaining eye-safety compliance. The system dynamically adjusts laser intensity and exposure time to provide sufficient visibility for accurate positioning without exceeding safety thresholds, thereby resolving the contradiction between precision and safety.
4Reliability
If multiple detection systems are integrated for delineation detection and reporting, then measurement accuracy and game rule enforcement are improved, but system complexity increases
Solution Approach 1:
The patent integrates multiple detection functions into a unified laser projection and detection system that serves multiple purposes: projecting boundary lines, marking first-down positions, detecting ball breakage events, and providing real-time reporting. This multi-functional approach achieves high detection accuracy and reliability while managing system complexity through centralized control and coordinated operation of integrated components.
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
The system enables accurate and timely measurement of player positions and ball placement, enhances the spectator experience by providing real-time visibility of the first down line, reduces game delays, and improves safety by allowing players to see the line without contorting, thus reducing injury risks.
Implementation Method 1
a laser source at an elevated location relative to the target surface and operative to project visible light upon the target surface
Data Source
AI summary
A sports detection and reporting system that locates the players and the ball to determined if certain play criteria have been met. The system also displays on the field detected locations relevant to the players and the play in real time.