Helmet HUD Guidance Display for Direction Focus Near Turns
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Solution Overview
Problem
In head-up display devices of vehicles, existing systems display distance and direction information that can distract drivers near guidance points, leading to incorrect judgments due to the prominence of numerical distance values, which may not accurately represent the actual distance to the guidance point.
Innovation Solution
A display light emitting device on a helmet that adjusts the display of distance and direction images based on proximity to the guidance point, transitioning from combined distance and direction displays to solely direction displays as the point is approached, using color and arrow changes to maintain driver focus on the correct route.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If both distance image and direction image are displayed all the time, then the driver receives complete navigation information, but the driver may be distracted by prominent numerical distance values near guidance points leading to incorrect judgments
Solution Approach 1:
The display system dynamically changes its output based on the vehicle's proximity to the guidance point. When approaching the guidance point (distance ≤ threshold), the system automatically switches from displaying both distance and direction images to displaying only the direction image, thus adapting the information presentation to the current navigation context and preventing driver distraction from misleading distance values.
2Measurement precision
If numerical distance values are displayed prominently, then the driver can see the distance to the guidance point, but the rough measurement values may mislead the driver to mistake wrong points for guidance points
Solution Approach 1:
The system extracts and removes the distance image from the display when the vehicle is near the guidance point (distance ≤ threshold). By taking out the potentially misleading numerical distance information and displaying only the direction image, the system eliminates the source of confusion while maintaining essential navigation guidance.
3Ease of operation
If the display switches to flashing mode near guidance points, then the driver's attention is attracted to the display, but the driver may adhere to the numerical value and mistake a wrong point for the guidance point
Solution Approach 1:
The system converts the potential harm of prominent distance display into a benefit by using the switching action itself to draw attention. The change in display content (from both images to direction image only) near the guidance point serves as an attention-grabbing event that alerts the driver to pay close attention, while the removed distance information prevents misinterpretation.
Data Source
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AI summary
When the distance indicated by distance information received by a Bluetooth module (31) is less than a predetermined first reference distance (KY1), a guidance image (33) including a distance image (33a) and a direction image (33b) is generated, and this guidance image (33) is displayed on a combiner (26) of a helmet (20). By stopping the display of the distance image (33a) of the guidance image (33) and continuing to display the direction image (33b) from when the distance indicated by the distance information becomes less than a second reference distance (KY2) shorter than the first reference distance (KY1) to when the guidance point is reached, the driver's attention is focused on the direction image (33b), so that a mistake in the direction of travel at the guidance point can be prevented.