Automated Valet Parking Follow-Up Distance for Smooth Deceleration
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Solution Overview
Problem
In automated valet parking systems, when multiple autonomous driving vehicles follow the same path, the intermingling of deceleration and acceleration instructions can lead to repetitive acceleration and deceleration, reducing traveling efficiency.
Innovation Solution
The system sets a stop position and calculates a deceleration start distance for the following vehicle, then sets a target vehicle-to-vehicle distance that is longer than the sum of the deceleration start distance and a margin distance, ensuring efficient follow-up traveling by avoiding unnecessary acceleration and deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the parking place control server issues deceleration instructions to avoid approach to the preceding vehicle while the succeeding vehicle performs follow-up traveling, then the safety and proper spacing between vehicles is improved, but the traveling efficiency deteriorates due to repetitive acceleration and deceleration
Solution Approach 1:
The system performs preliminary action by setting the target vehicle-to-vehicle distance in advance to be longer than the deceleration start distance plus margin distance. This pre-calculated distance ensures that the succeeding vehicle maintains a safe distance from the preceding vehicle without requiring continuous deceleration instructions, thereby preventing repetitive acceleration and deceleration cycles while improving traveling efficiency
Solution Approach 2:
The system applies dynamics by making the target vehicle-to-vehicle distance adjustable based on vehicle speed and deceleration characteristics. The control server dynamically sets the target distance according to the current driving conditions, allowing the vehicle to maintain optimal spacing without unnecessary speed changes, thus resolving the contradiction between safety spacing and traveling efficiency
Data Source
AI summary
System that causes a first vehicle and a second vehicle to perform automated valet parking includes one or more processors configured to cause, a second vehicle to perform follow-up traveling to follow a first vehicle; set a stop position between the first vehicle and the second vehicle when the second vehicle is performing the follow-up traveling to follow the first vehicle in the parking place; calculate, between the stop position and a position where the second vehicle starts deceleration to stop at the stop position; and set a target vehicle-to-vehicle distance of the second vehicle from the first vehicle, and set, as the target vehicle-to-vehicle distance, a distance longer than a sum of the deceleration start distance and a margin distance from the stop position to the first vehicle.