Vehicular Display Device Speed-Adaptive Direction Guide
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Solution Overview
Problem
Current vehicular head-up displays fail to accurately show turn positions to drivers at varying speeds, leading to insufficient margin at high speeds and unnecessary early display at low speeds, potentially causing misidentification of intersections.
Innovation Solution
A vehicular display device that adjusts the display pattern of direction guide images based on vehicle speed, increasing image length, number of icons, and display timing to ensure accurate and timely indication of turn positions at all speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display pattern of direction guide images is kept constant, then the display system is simple, but the accuracy of showing turn positions varies with traveling speed
Solution Approach 1:
The display pattern is made dynamic by adjusting the length of direction guide images based on traveling speed. At higher speeds, longer images are displayed to provide sufficient margin and advance notice, while at lower speeds, shorter images are displayed to avoid premature indication. This dynamic adjustment resolves the contradiction by adapting the display to varying operational conditions.
Solution Approach 2:
The system changes the parameter of image length in the display pattern based on traveling speed. By modifying this visual parameter dynamically, the system maintains high accuracy in turn position indication across different speed conditions without requiring a completely complex control system.
2Reliability
If the direction guide image is displayed earlier to provide sufficient margin at high speeds, then the safety margin is improved, but the driver experiences unnecessary early display and potential misidentification at low speeds
Solution Approach 1:
The display pattern is customized according to local conditions - specifically the traveling speed. By adjusting the image length to match the current speed condition, the system provides appropriate safety margins only when needed (high speeds) while avoiding premature display at low speeds, thus eliminating driver confusion without compromising safety.
3Loss of information
If the display shows multiple coin-shaped icon images, then the direction guidance is comprehensive, but the processing time and cognitive load increase
Solution Approach 1:
The system extracts only the essential direction guidance information needed for the current situation and displays it in an optimized format. By adjusting the display pattern to show only necessary icons at appropriate distances, the system maintains comprehensive direction guidance while reducing unnecessary visual elements that would increase processing time and cognitive load.
Data Source
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AI summary
A vehicular display device comprises: a display processor configured to display a direction guide image in a display area, the direction guide image showing a turn position where a vehicle is to make a turn; and a display pattern determiner configured to determine a display pattern of the direction guide image based on the traveling speed of the vehicle. The display pattern determiner determines the display pattern such that the higher the traveling speed of the vehicle is, the longer a length from a top end to a bottom end of the direction guide image is. The display processor displays the direction guide image in the display area based on the display pattern determined by the display pattern determiner.