Sensor-Based Optical Projector Kickboard for Swimming Feedback
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Solution Overview
Problem
Conventional swimming instruction methods, such as group instruction, limit individualized feedback and attention, leading to inefficient learning due to high costs and limited personalized instruction.
Innovation Solution
A swimming instruction system comprising a buoyant kickboard with an optical projector, limb sensors, and a controller that provides individualized feedback by analyzing limb motion data and projecting user advice onto the kickboard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If group instruction is used to reduce costs, then cost is reduced, but individual feedback and attention are limited
Solution Approach 1:
The system continuously captures limb motion data through sensors, processes it to detect deviations from proper technique, and provides real-time visual feedback through an optical projector displayed on the kickboard. This closed-loop feedback system enables individualized instruction without requiring a coach present, resolving the contradiction between cost reduction and maintenance of personalized feedback quality
Solution Approach 2:
The system allows students to independently monitor and correct their own swimming technique by displaying instructional content and real-time performance feedback directly on their kickboard. Each student receives personalized guidance autonomously, eliminating the need for expensive one-on-one coaching while maintaining high-quality individualized instruction
2Loss of information
If one-on-one instruction is provided to maximize individual feedback, then individual feedback quality is improved, but cost increases significantly
Solution Approach 1:
The system creates a virtual copy of the coaching experience by using sensors to capture actual limb motion data and projecting visual representations of proper technique and real-time feedback onto the kickboard. This digital replication of personalized instruction delivers one-on-one quality feedback at the cost of group instruction, resolving the contradiction between feedback quality and cost
Solution Approach 2:
The patent replaces the mechanical system of human coaches providing individualized instruction with an automated electronic system comprising sensors, processors, and optical projectors. This substitution maintains the quality of personalized feedback while eliminating the high cost associated with hiring individual coaches
3Quantity of substance
If conventional instruction methods are used, then equipment and curriculum costs are reduced, but learning effectiveness decreases due to lack of personalized feedback
Solution Approach 1:
The system segments the instruction delivery by providing personalized feedback to each student individually through their own kickboard device, rather than providing generic group instruction. Each student receives tailored guidance based on their specific technique deviations, maintaining low equipment costs while dramatically improving learning effectiveness through personalized attention
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 personalized and efficient swimming instruction by providing real-time, user-specific feedback on limb motion and posture, enhancing learning effectiveness and reducing costs compared to traditional methods.
Implementation Method 1
an optical projector disposed on the buoyant kickboard configured to project user-readable information onto the buoyant kickboard
Implementation Method 2
a buoyant kickboard
Data Source
AI summary
A swimming instruction system including a buoyant kickboard, an optical projector disposed on the buoyant kickboard to project user-readable information onto the buoyant kickboard, a limb piece comprising a limb sensor, and a controller to receive sensor data from the wrist piece and/or the ankle piece and transmit user-readable information to the optical projector. The swimming instruction system analyzes sensor data from limb sensors to detect a limb motion, compare a detected limb motion with a predicted limb motion, generate a user advice, transmit to the optical projector user-readable information including the user advice, and display the user advice using the optical projector. The swimming instruction system is used in a method of teaching a user to swim.