Parking Assist Obstacle Map Wheel Stop Detection
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Solution Overview
Problem
Conventional parking assist systems fail to account for obstacles and wheel stops in parking environments, leading to uncomfortable parking experiences due to potential collisions with pillars, fireplugs, or strong hits against wheel stops.
Innovation Solution
A parking assist apparatus that generates an obstacle map using vehicle-mounted sensors, detects wheel stops by dividing the map into areas, and sets a parking position based on the detected wheel stop, while also considering stall lines and obstacles to adjust the parking frame for optimal positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle parks by aligning with the positions of adjacent parked vehicles, then the parking operation is simplified, but the vehicle may collide with obstacles such as pillars and fireplugs
Solution Approach 1:
The system performs preliminary detection of obstacles and wheel stops before the vehicle completes parking. The sensor detects obstacles in advance, and the control unit pre-calculates the optimal parking position to avoid collisions, allowing the vehicle to park safely without manual intervention.
Solution Approach 2:
The system uses sensor feedback to continuously monitor the parking environment. The sensor detects obstacles and wheel stops, and the control unit adjusts the parking position based on this feedback information, enabling the vehicle to avoid obstacles while maintaining automated parking operation.
2Area of stationary object
If the vehicle parks close to the wheel stop, then the parking space utilization is maximized, but the wheels strongly hit the wheel stop causing discomfort
Solution Approach 1:
The system detects the wheel stop position in advance using the sensor, and the control unit pre-calculates the optimal parking position that maintains an appropriate distance from the wheel stop. This preliminary positioning prevents strong wheel impact while maximizing parking space utilization.
Solution Approach 2:
The sensor provides feedback on the wheel stop position, and the control unit continuously adjusts the parking position based on this information. The system feedback mechanism ensures the vehicle parks at an optimal distance from the wheel stop, avoiding strong impacts while maintaining efficient space use.
3Device complexity
If the parking position is determined without considering wheel stops and obstacles, then the parking assist system is simpler, but the parking experience becomes uncomfortable and unsafe
Solution Approach 1:
The sensor serves multiple functions: detecting obstacles, detecting wheel stops, and providing positioning information. The control unit integrates these multiple detection functions into a unified parking control system, achieving reliable and safe parking without significantly increasing device complexity.
Solution Approach 2:
The parking assist system automatically detects obstacles and wheel stops, and the control unit autonomously determines the optimal parking position without requiring manual input from the driver. The system serves itself by integrating sensor data and automatically adjusting the parking position for safety and comfort.
Data Source
AI summary
A parking assist apparatus includes: a map generation unit that generates an obstacle map showing a position of an obstacle existing in a surrounding of own vehicle based on a detected result of a sonar, and records data indicating existence of the obstacle on the obstacle map; a wheel-stop detection unit that divides the obstacle map generated by the map generation unit into a plurality of areas, counts a number of data pieces in each of the plurality of divided areas, and detects a position of a wheel stop based on the counted number of data pieces in each of the plurality of areas; and a parking position setting unit that sets a parking position for parking the own vehicle based on the position of the wheel stop detected by the wheel-stop detection unit.