Parking Assistant Rearward Movement Starting Position Calculator
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Solution Overview
Problem
Conventional parking assistants are unable to assist drivers in parking when obstacles are present near the rearward movement starting position, as they only provide a single position for starting rearward movement.
Innovation Solution
A parking assistant system that includes a shooting part, a parking target position setter, a rearward movement starting position calculator, a movement calculator, and an image generator, which superposes information images on vehicle surroundings images to display multiple rearward movement starting positions, allowing the vehicle to be parked safely by selecting a position that avoids obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only one rearward movement starting position is provided, then the device complexity is reduced, but the reliability of parking assistance decreases when obstacles are present
Solution Approach 1:
The patent segments the single rearward movement starting position into multiple candidate positions (first rearward movement starting position and second rearward movement starting position). This segmentation allows the system to provide alternative parking paths when obstacles are detected, thereby improving reliability without significantly increasing system complexity.
Solution Approach 2:
The patent implements dynamic selection of rearward movement starting positions based on real-time obstacle detection. The system dynamically switches between the first and second rearward movement starting positions depending on the presence of obstacles, making the parking assistance system adaptive and reliable under varying conditions.
2Adaptability or versatility
If multiple rearward movement starting positions are calculated and displayed, then the adaptability to different parking scenarios improves, but the device complexity increases
Solution Approach 1:
The patent applies local quality by providing different types of information for different rearward movement starting positions. The first rearward movement starting position is displayed with normal information, while the second rearward movement starting position is displayed with alternative path information when obstacles are detected. This localized differentiation enhances adaptability without overwhelming the system with uniform complexity.
Solution Approach 2:
The patent performs preliminary calculation of multiple rearward movement starting positions before actual parking execution. By pre-calculating both the first and second starting positions and their associated track lines, the system prepares multiple contingency plans in advance, enabling quick adaptation to different parking scenarios without increasing real-time computational complexity.
3Measurement precision
If the system provides detailed track line information for multiple positions, then the measurement precision of parking guidance improves, but the loss of information increases due to the complexity of processing multiple positions
Solution Approach 1:
The patent implements partial action by selectively displaying track line information based on the selected rearward movement starting position. When the first position is selected, only the first track line is displayed with detailed guidance. When the second position is selected due to obstacles, the second track line is displayed instead. This selective display provides precise guidance for the active path without overwhelming the driver with unnecessary information from alternative paths.
Data Source
AI summary
A parking assistant includes: shooting part shooting surroundings; parking target position setter setting parking target position in surroundings image by shooting part; rearward movement starting position calculator calculating rearward movement starting position based on: target position by position setter, and vehicle's movable area, rearward movement starting position denoting position stopping vehicle and starting rearward movement of vehicle, to park vehicle in target position; movement calculator sensing movement direction and movement amount of vehicle; and image generator superposing an information image on surroundings image based on movement direction and amount which are sensed with movement calculator. Information image denotes rearward movement starting position for allowing vehicle to be parked in target position. According to vehicle's movement, image generator generates, with different displays, following sub-positions of rearward movement starting position: first sub-position allowing vehicle to move to target position, and second sub-position failing to allow vehicle to be parked in target position.