Parking Frame Width Calculation Using Vehicle Distance Data
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Solution Overview
Problem
Existing parking assist devices face challenges in accurately setting parking frames due to errors between the set and actual widths of parking frames, which affects the precision of parking frame placement.
Innovation Solution
The method involves acquiring recognition information about parked vehicles, selecting representative points, calculating distances between these points, and determining the width of parking frames based on these distances to minimize errors, using a process that sets an assumed value for the frame width and adjusts it to match the actual frame widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the width of parking frames is preliminarily set, then the device complexity is reduced, but the manufacturing precision deteriorates due to errors between set and actual widths
Solution Approach 1:
The patent changes the parameter of parking frame width from a fixed preliminary set value to a dynamically calculated value based on actual measured distances between parked vehicles. The control unit calculates the width by measuring distances between multiple parked vehicles and determining the most frequent distance value, thereby adapting the parameter to actual conditions and eliminating the contradiction between simple device operation and precise frame width setting
Solution Approach 2:
The patent replaces the mechanical/manual method of setting fixed frame widths with an automated sensing and calculation system. The radar device measures actual distances between vehicles, and the control unit processes this data to calculate optimal frame widths, substituting manual configuration with automated detection and computation to achieve higher precision without significantly increasing device complexity
2Ease of operation
If the width of parking frames is preliminarily set, then the ease of operation is improved, but the measurement precision deteriorates due to errors between set and actual widths
Solution Approach 1:
The system performs self-measurement by using the radar device to automatically detect and measure the actual distances between parked vehicles in the parking lot. The control unit then processes these measurements to calculate the appropriate frame widths, enabling the system to self-determine the correct parameters without requiring manual measurement or external input, thus maintaining ease of operation while achieving high measurement precision
Solution Approach 2:
The patent implements a feedback mechanism where the radar device continuously monitors the positions of parked vehicles, and the control unit uses this feedback information to calculate and adjust the parking frame widths. The system measures actual vehicle positions, compares them with the preliminary set widths, and determines the optimal frame width based on the measured data, creating a closed-loop system that maintains both operational simplicity and measurement accuracy
Data Source
AI summary
A method is provided which comprises: acquiring, from a set of ranging sensors, recognition information about a plurality of parked vehicles existing in a parking frame group comprising a plurality of parking frames arranged side by side; selecting representative points of the parked vehicles from the recognition information; calculating a distance between representative points that is a distance between the representative points adjacent to each other; and calculating a width of the parking frames on the basis of the distance between representative points.