Vehicle Warning Device Prioritizing Shortest Collision Time
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Solution Overview
Problem
Conventional warning devices confuse drivers by displaying multiple obstacle directions simultaneously, making it difficult for them to determine which direction to focus attention, especially when detecting obstacles in the front and side areas independently.
Innovation Solution
A warning device with detection units for the front and side areas, a candidate selection unit to identify obstacles with high collision probability, and a display unit that guides the driver's attention to the obstacle with the shortest collision time period, using distinct display elements to differentiate between front and side area obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple object images are displayed to indicate multiple obstacle directions simultaneously, then the driver can be warned of multiple obstacles, but the driver becomes confused and cannot determine which direction to pay attention to
Solution Approach 1:
The patent segments the obstacle information display by separating front area obstacles (detected by first detection unit) from side area obstacles (detected by second detection unit). Each detection unit and corresponding display element handles specific spatial zones independently, allowing the driver to process information from different directions separately rather than being overwhelmed by multiple simultaneous displays.
Solution Approach 2:
The patent applies local quality by using distinct display elements for different spatial zones: front area obstacles are displayed using first display elements while side area obstacles use second display elements. This differentiation in display characteristics based on spatial location helps the driver quickly identify and prioritize obstacles in critical directions without confusion from uniform displays.
2Measurement precision
If obstacles in front area and side area are detected independently by separate detection units, then each detection unit can specialize in its area, but the driver receives multiple separate warnings that cause confusion
Solution Approach 1:
The patent merges the independent detection results from the first detection unit (front area) and second detection unit (side area) into a unified warning system. The control unit integrates information from both units and coordinates their display elements to work together, combining the advantages of specialized detection while presenting unified, non-confusing information to the driver about obstacle priorities.
Solution Approach 2:
The control unit acts as an intermediary that receives detection results from both detection units, processes the information to determine obstacle priorities, and coordinates the display elements accordingly. This intermediary function synthesizes the separate detection outputs into a coherent warning message that preserves detection precision while preventing information overload for the driver.
Data Source
AI summary
A warning device selects, as a first candidate, an obstacle whose collision time period is equal to or shorter than a threshold time period and is the shortest among at least one obstacle which is present either in a front area or in a side area. The warning device selects, as a second candidate, the obstacle whose collision time period is equal to or shorter than a threshold time period and is the shortest among at least one obstacle which is present in the side area. The warning device displays a warning screen which guides driver's eyes to a direction of one candidate with the shortest collision time period from the first candidate and the second candidate.