Vehicle Display for Fallen Object Alerts Without Gaze Shift
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Solution Overview
Problem
Existing vehicle display devices do not effectively prevent inattentive driving when an object suddenly falls inside the vehicle, as they fail to alert the driver without diverting their attention from the road.
Innovation Solution
A vehicle display device that uses sensors to detect fallen objects within the vehicle interior, determines the detection region based on passenger presence, and displays relevant information to the driver without requiring them to look away from the road.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the driver is alerted to fallen objects using traditional display methods, then the driver becomes aware of the fallen object, but the driver's line of sight moves away from the road causing inattentive driving
Solution Approach 1:
The patent transitions from traditional 2D planar displays to a three-dimensional volumetric display that projects images into the air space above the dashboard. This dimensional change allows the display to be viewed from multiple angles including peripheral vision, enabling the driver to perceive fallen object information without moving their line of sight from the road.
Solution Approach 2:
The patent introduces an acoustic field as an intermediary medium to convey information about fallen objects. By using sound waves to indicate the location and type of fallen objects, the system provides alerting information that does not require visual attention, thus maintaining driving safety while improving information delivery.
2Measurement precision
If a detection system covers the entire vehicle interior, then all fallen objects are detected, but the system complexity and processing load increase
Solution Approach 1:
The patent divides the vehicle interior detection space into multiple segmented regions using virtual walls and detection region division. By segmenting the monitoring space and focusing detection on relevant areas (such as areas near the driver or areas where objects are likely to fall), the system maintains high detection accuracy while reducing the overall processing load and complexity.
Solution Approach 2:
The patent applies different detection strategies and sensitivity levels to different regions of the vehicle interior. High-priority areas receive more intensive monitoring while lower-priority areas use reduced monitoring, optimizing the balance between detection accuracy and system complexity.
Data Source
AI summary
A vehicle display device includes: a first sensor (microphone) that senses a vehicle interior; a region decider that decides a detection region which is a region for detecting a fallen object; a determiner that determines, based on the result of the sensing performed by the first sensor, whether an object has fallen; and a controller that decides display content based on a determination that the object has fallen and the detection region, and the controller causes a display to display the display content decided by the controller.