Dual-Zone Passenger Display for Motion Sickness Reduction
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Solution Overview
Problem
Passengers in the front seat of a vehicle experience discomfort and nausea when switching between viewing content on a display device and observing the external environment while the vehicle is in motion, as this transition can cause disorientation.
Innovation Solution
A passenger content display device for a road vehicle that includes a screen divided into two portions: one for projecting multimedia or informational content and another for projecting a video stream of the external environment, with adjustable brightness controlled by a unit that exploits existing vehicle sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device shows distracting contents to the front passenger, then the passenger can enjoy multimedia content, but the driver may be distracted from driving
Solution Approach 1:
The display screen is divided into multiple independent display zones: a first display area showing distracting content for the passenger, and a second display area showing non-distracting content (such as navigation or vehicle information) visible to the driver. This segmentation allows both functions to coexist without compromising driving safety.
2Ease of operation
If the display shows fixed content to the passenger, then the passenger can enjoy content, but switching to external viewing generates discomfort and nausea
Solution Approach 1:
The display system dynamically adjusts the content shown in different display areas based on vehicle motion state. When the vehicle is moving, the system automatically switches between showing distracting content and showing content related to the external environment (such as scenery or navigation), preventing the abrupt transitions that cause motion sickness while maintaining an engaging viewing experience.
Solution Approach 2:
The control unit receives feedback from vehicle sensors (such as acceleration sensors or GPS) to detect vehicle motion state, and automatically adjusts the display content accordingly. This feedback mechanism ensures that the display adapts to the passenger's physiological state, preventing nausea by avoiding abrupt transitions between fixed and moving views during vehicle operation.
3Object-affected harmful factors
If additional sensors are added to detect vehicle motion state, then the display can adapt to reduce nausea, but the device complexity and cost increase
Solution Approach 1:
The control unit is designed to utilize existing vehicle sensors (such as acceleration sensors, GPS, or other sensors already present in modern vehicles) for multiple purposes: both for vehicle control functions and for detecting motion state to adjust display content. This multi-functionality approach eliminates the need for dedicated additional sensors, reducing system complexity and cost while achieving nausea reduction.
Data Source
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AI summary
A device (3) for displaying contents to a passenger (P) of a road vehicle (1); the device (3) for displaying contents comprising: a support element (5) configured to be mounted at a dashboard (4) of the road vehicle (1); at least one screen (6) mechanically connected to the support element (5) and configured to be visible to the passenger (P) while the vehicle is being driven; a first portion (7) configured to project contents while the vehicle is being driven; a second portion (8), adjacent to the first portion (7) and configured to project a video stream (VF) of at least part of the environment external to the road vehicle (1).