Mechanical Head-Worn Visual Reference for Motion Sickness
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Solution Overview
Problem
Motion sickness, spatial disorientation, and vertigo pose significant challenges in various environments, including vehicles, simulators, and virtual reality, due to mismatches between visual, proprioceptive, and vestibular sensory inputs, leading to nausea, vomiting, and impaired human performance.
Innovation Solution
The development of head-worn devices that use mechanical pendulums, fluid systems, or optical elements to provide visual cues matching the user's head movements, thereby overriding dysfunctional vestibular signals and eliminating sensory mismatches, without requiring electricity or electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic systems are used to provide visual feedback, then the effectiveness of motion sickness mitigation is improved, but the device complexity and power requirements increase
Solution Approach 1:
The patent replaces electronic systems with purely mechanical components including pendulums, rolling elements, and fluid-level indicators. These mechanical elements respond to head movements and gravitational forces to provide visual feedback that matches vestibular sensations, eliminating the need for batteries, sensors, and electronic processing while maintaining effectiveness in mitigating motion sickness
Solution Approach 2:
The mechanical components automatically respond to head movements and gravitational forces without requiring external power sources or electronic control. The pendulums swing, rolling elements move, and fluid levels change in direct response to the user's motion, providing self-regulating visual feedback that reduces device complexity
2Reliability
If visual feedback is provided continuously, then motion sickness mitigation is improved, but energy consumption increases
Solution Approach 1:
The patent eliminates electronic power requirements by using mechanical systems that passively respond to gravitational forces and head movements. The pendulums, rolling elements, and fluid indicators require no energy input beyond the natural forces already present during motion, achieving continuous visual feedback with zero energy consumption
Solution Approach 2:
The visual feedback system uses the user's own motion and gravitational forces to drive the mechanical indicators, requiring no external energy source. The system harvests the natural physical forces present during movement to provide continuous visual information about head orientation and acceleration
3Reliability
If mechanical or fluid systems are used to provide visual reference, then sensory mismatch is reduced, but device weight increases
Solution Approach 1:
The patent divides the visual reference system into separate functional components: pendulums for pitch indication, rolling elements for roll indication, and fluid-level indicators for additional orientation information. This segmentation allows each component to be optimized for its specific function while keeping individual weights minimal, distributing the total weight across multiple lightweight elements rather than one heavy system
Solution Approach 2:
The patent employs thin optical elements, transparent or translucent materials, and lightweight mechanical structures for the visual reference components. These thin-film and lightweight constructions provide the necessary visual indication while minimizing added weight compared to solid, rigid alternatives
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
These devices effectively mitigate motion sickness and spatial disorientation by providing continuous visual feedback, enhancing cognitive and motor skills and reducing symptoms of nausea and disorientation in motion-provoking environments.
Implementation Method 1
The visual reference may be controlled through a mechanical or fluid system responsive to gravitational forces
Implementation Method 2
The visual reference may be controlled through a mechanical or fluid system responsive to gravitational forces
Data Source
AI summary
A non-electronic head-worn system for providing visual inertial head orientation information to a person is disclosed. The system comprises a head-worn unit that displays at least one orientation reference symbol to the person wearing the unit wherein the orientation reference symbol stays in a fixed visual position for the person when the person's head changes orientation. The system comprises an optical element located in the optical path between the user's eye and the orientation reference symbol, such as a lens, mirror, a prism, a beam splitter, a retro-reflector, or any other device or medium that can change the appearance or apparent location of an image. The system further comprises a pitch indicator that gives visual pitch information to the person and/or a roll indicator that gives visual roll information to the person. The pitch indicator and the roll indicator are responsive to a pendulum, a rolling element, or a fluid in a reservoir. The pitch element and the roll element do not use electricity or electronics.