Paddling Exercise Resistance Control With Head-Tracked Virtual Illumination

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Solution Overview

Problem

Conventional rowing machines lack the ability to provide a realistic paddling experience and dynamic resistance adjustment, failing to simulate the interaction of a paddle with water during different phases of a stroke, and often require manual adjustment for resistance changes.

Innovation Solution

An exercise apparatus with motorized force production and variable tension in cables, controlled by a controller to simulate different paddling strokes and environments, including virtual interactions via a virtual headlamp and cranial orientation detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional rowing machines use fixed resistance mechanisms (fans or springs), then the device structure is simple, but the ability to dynamically simulate water interaction during different paddling phases is poor

Engineering Contradiction:

Improvedynamic resistance adjustmentVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by transitioning from fixed resistance mechanisms to a motorized system that dynamically adjusts cable tension based on simulated water interaction. The motor controller modulates resistance in real-time to match the phase of the paddling stroke, providing high resistance during the power phase when the paddle blade is in water and low resistance during the recovery phase when the blade is in air.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the resistance parameter dynamically through motor control. The motor controller adjusts the tension force applied by the cable based on detected paddling phase and simulated water conditions, allowing the resistance parameter to vary continuously rather than remaining fixed as in conventional fan or spring systems.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If conventional rowing machines require manual adjustment for resistance changes, then the device structure is simple, but the user experience and workout engagement are poor

Engineering Contradiction:

Improveautomatic resistance controlVSAvoidcontrol system

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system performs self-service by automatically adjusting resistance based on its own detection of paddling phase and simulated water interaction. The motor controller monitors the exercise attachment movement and autonomously modulates cable tension without requiring user intervention, making the system self-regulating and eliminating manual adjustment needs.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements feedback by continuously monitoring the position and movement of the exercise attachment to determine paddling phase, then using this information to adjust motor output and cable tension. This closed-loop control enables automatic resistance adaptation based on real-time exercise dynamics.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If conventional rowing machines operate the same regardless of simulated environment, then the device is simple to manufacture, but the realism and immersion of the paddling experience are poor

Engineering Contradiction:

Improvevirtual environment interactionVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The motorized resistance system serves multiple functions: it simulates water resistance during the power phase, provides minimal resistance during the recovery phase, and can be programmed to represent different water conditions (calm water, rough water, currents). This single system handles various paddling scenarios that would otherwise require different physical resistance mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces complex mechanical resistance adjustment mechanisms with an electronically controlled motor system. Instead of using multiple physical components to simulate different water conditions, the system uses software-controlled motor output to dynamically adjust resistance, reducing mechanical complexity while enhancing virtual environment interaction.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12521619B2Exercise equipment with dynamic illumination of simulated environment

Publication Date: 2026.01.13 OXEFIT INC

AI summary

An exercise apparatus includes a motor, a cable coupled to the motor, an exercise attachment coupled to the cable such that the motor is operable to exert force on the exercise attachment via the cable, a display screen, and a controller. The controller is programmed to control the motor based on simulated progress through a virtual environment, determine a beam direction based on a cranial orientation of the user of the exercise apparatus, generate a graphical visualization of the virtual environment by casting a virtual light beam along the beam direction, and cause the display screen to display the visualization.