Magnetic Resistance Mechanism in Cable Exercise Machines
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Solution Overview
Problem
Cable exercise machines lack a mechanism to track the calories burned during workouts, relying on user estimation based on repetitions and resistance, which can be inaccurate due to lack of precise resistance tracking.
Innovation Solution
Incorporating a sensor to track the position of a flywheel within a magnetic resistance mechanism, which rotates with the pull cables, and an energy tracker to calculate calories burned based on the flywheel's rotations and resistance levels, ensuring accurate calorie counting by isolating return movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional weight stacks are used in cable machines, then resistance can be selected in discrete increments, but precise tracking of resistance levels and calories burned is not possible
Solution Approach 1:
The patent replaces traditional mechanical weight stacks with a magnetic resistance mechanism that uses magnetic fields to provide continuous, precisely controllable resistance. This substitution enables accurate tracking of resistance levels through sensors while eliminating the discrete increment limitations of mechanical systems.
Solution Approach 2:
The patent implements continuous adjustment of magnetic resistance parameters through electronic control, allowing resistance levels to be precisely modified during exercise. This parameter control enables accurate calorie tracking by monitoring real-time resistance variations, transforming the discrete weight selection into continuous parameter adjustment.
2Measurement precision
If return movements are included in calorie calculations, then all movements are counted, but inaccurate calorie tracking occurs due to lack of resistance tracking during return phase
Solution Approach 1:
The patent employs sensors to continuously monitor resistance levels and flywheel position throughout the entire exercise cycle, including both the outward and return movements. This feedback mechanism allows the system to distinguish between active exertion phases and return phases, providing accurate calorie tracking by only counting calories burned during resistance-overcoming movements.
Solution Approach 2:
The patent dynamically adjusts the calorie calculation based on real-time resistance measurements and movement direction. By making the calorie tracking dynamic rather than static, the system can accurately differentiate between phases of exercise, counting calories only when resistance is being overcome, thereby improving measurement precision without complicating user operation.
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
Provides accurate calorie tracking during workouts by isolating return forces and calculating calories consumed only during active exertion, allowing users to monitor progress effectively.
Implementation Method 1
the at least one resistance mechanism comprises a flywheel and a unit arranged to resist movement of the flywheel
Data Source
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AI summary
A cable exercise machine includes a first pull cable and a second pull cable incorporated into a frame. Each of the first pull cable and the second pull cable are linked to at least one resistance mechanism. The at least one resistance mechanism includes a flywheel and a magnetic unit arranged to resist movement of the flywheel.