In-Vehicle Rod and Frame Testing for Motion Sickness Prevention
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Solution Overview
Problem
Existing methods fail to effectively detect and address individual susceptibility to motion sickness in vehicle passengers, particularly with the rise of autonomous driving, where passengers engage in activities that exacerbate motion sickness, limiting the accessibility of advanced autonomy levels.
Innovation Solution
A method utilizing the Rod and Frame Test, conducted within a vehicle, where a passenger is presented with a tilted rod and frame on a display, and their input to correct it is recorded and evaluated, allowing for personalized countermeasures to prevent motion sickness through visual, acoustic, or environmental adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If autonomous driving is implemented and passengers engage in activities like reading or working on mobile devices, then productivity and ease of operation are improved, but the incidence of motion sickness increases significantly
Solution Approach 1:
The system performs the rod and frame test before the actual journey to determine the passenger's susceptibility to motion sickness. This preliminary assessment allows the system to prepare appropriate countermeasures in advance, such as adjusting environmental conditions or providing preventive information, thereby preventing motion sickness before it occurs while allowing passengers to engage in productive activities
Solution Approach 2:
The system uses the results of the rod and frame test to provide feedback about the passenger's susceptibility to motion sickness. Based on this feedback, the system adapts the vehicle environment and provides personalized recommendations, creating a closed-loop system that continuously monitors and adjusts conditions to prevent motion sickness while maintaining productivity
2Measurement precision
If the rod and frame test is conducted in a darkened room with the subject isolated from external references, then measurement precision is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The system uses existing vehicle components (display screens, speakers, microphones, and standard input devices) to conduct the rod and frame test, rather than requiring specialized equipment. The display serves multiple functions: presenting the test stimulus, providing instructions, and displaying results. This multi-functionality approach maintains measurement precision while avoiding additional complex hardware
Solution Approach 2:
The system uses the passenger's own voice or existing vehicle controls to provide input during the test, eliminating the need for specialized input devices. The evaluation device processes the passenger's responses automatically, making the system self-sufficient and reducing operational complexity despite maintaining precise measurement capabilities
3Reliability
If individualized countermeasures are provided based on rod and frame test results, then motion sickness prevention effectiveness is improved, but loss of time for testing and processing increases
Solution Approach 1:
The system implements a simplified version of the rod and frame test that captures the essential measurements needed to determine motion sickness susceptibility without requiring the full complexity of the traditional test protocol. This partial action approach provides sufficient information for effective countermeasure selection while significantly reducing the time required for testing and processing
Solution Approach 2:
The rod and frame test is conducted during a brief period before the journey begins, allowing the system to have the evaluation results and personalized countermeasures ready in advance. This preliminary timing ensures that no significant journey time is lost to testing, as the results are available immediately when needed for motion sickness prevention
Data Source
AI summary
A method for detecting the tendency of a passenger of a vehicle to get motion sickness by using a rod and frame test is disclosed. An image designed to carry out a rod and frame test is displayed in the vehicle. The rod and the frame each enclose an angle greater than 0 degrees and less than 90 degrees with a horizontal spatial axis and/or a vertical spatial axis. A request is issued to correct the rod into a vertical or horizontal position by means of an input device. An input carried out by the passenger to correct the rod is recorded. The rod and frame test is evaluated by an evaluation device based on the recorded input of the passenger, and at least one measure is issued to prevent and/or combat the occurrence of motion sickness, depending on the result of the evaluation.