Autonomous Parking Trajectory Limiting via Sensor Detection Range
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Solution Overview
Problem
Fully automated valet parking systems face challenges in preventing accidents and collisions within parking lots, as existing technologies do not adequately ensure safe driverless travel for motor vehicles.
Innovation Solution
A method and device that determine the safe limit of a target trajectory for driverless travel within a parking lot, using environment sensors to ensure the motor vehicle can detect its surroundings, and a guidance system to drive the vehicle only up to that safe location, thereby reducing the risk of accidents and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor vehicle drives without a driver over the entire target trajectory, then the productivity of the valet parking system is improved, but the reliability of safe travel is worsened due to increased risk of accidents and collisions
Solution Approach 1:
The target trajectory is segmented into multiple sections based on sensor detection capabilities. The determination device divides the trajectory into a first section (within safe detection distance) and a second section (beyond safe detection distance). The vehicle only operates autonomously in the first section, while the second section requires manual intervention or alternative arrangements, thus segmenting the operational zones to balance automation and safety.
Solution Approach 2:
The determination device performs preliminary assessment of the target trajectory before the vehicle begins autonomous travel. It pre-determines the safe location based on sensor detection ranges and identifies sections where safe driverless travel is possible. This preliminary action allows the system to plan the autonomous portion of the journey in advance, ensuring safety constraints are met before execution.
2Productivity
If the vehicle travels beyond the detection range of environment sensors, then the productivity of the valet parking system is improved, but the risk of collision with undetected objects increases
Solution Approach 1:
The system applies partial action by allowing autonomous driverless travel only up to the safe location where sensor detection is guaranteed, rather than attempting to cover the entire target trajectory autonomously. The determination device calculates the maximum safe distance based on sensor capabilities and limits autonomous operation to that range, accepting that the remaining portion requires different operational modes to prevent undetected collisions.
3Reliability
If the safe travel location is determined based on sensor detection range, then the reliability of safe driverless travel is improved, but the travel distance the vehicle can cover autonomously is limited
Solution Approach 1:
The system uses feedback from environment sensors to continuously monitor the vehicle's surroundings and update the determination of safe travel location. The sensors provide real-time information about detected objects and conditions, which feeds back to the determination device to adjust the safe location calculation. This feedback mechanism ensures that autonomous travel is maintained only within ranges where sensor detection provides reliable safety assurance.
Data Source
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AI summary
The invention relates to a method for operating a motor vehicle traveling driverlessly within a parking space, having the following steps: - determining up to which location of a specified target trajectory a safe driverless travel of the motor vehicle is possible, wherein the target trajectory is to be traversed by the motor vehicle within the parking space, and - driverlessly driving the motor vehicle to the specified location on the basis of the specified target trajectory. The invention further relates to a corresponding device, to a motor vehicle, and to a computer program.