Automatic Parking Evacuation by Failure Type

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Solution Overview

Problem

Existing automatic parking systems do not adequately address the need to determine appropriate evacuation spaces for autonomous driving vehicles based on specific failure types, potentially causing obstruction or unsafe conditions due to uniform evacuation instructions.

Innovation Solution

An automatic parking system that includes a failure type determination unit, an evacuation space determination unit, and a vehicle instruction unit to instruct autonomous driving vehicles to evacuate to specific spaces based on the type of failure, ensuring safe and efficient parking lot management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If uniform evacuation position is determined for all autonomous driving vehicles, then the evacuation process is simple and quick, but the evacuation space may not be appropriate for specific failure types causing obstruction or unsafe conditions

Engineering Contradiction:
Improveevacuation process simplicityVSAvoidevacuation space appropriateness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent segments the evacuation process by determining evacuation positions based on different failure types (e.g., autonomous driving ECU abnormality, external sensor abnormality, brake abnormality). Instead of a uniform evacuation position, the system divides evacuation scenarios into multiple categories, each with specific position determination rules that account for the nature of the failure, thereby ensuring appropriate and safe evacuation spaces for each failure type.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If autonomous driving vehicles continue to stop at the contact position after failure, then the vehicle remains in place, but it obstructs the passage of other vehicles and creates unsafe conditions

Engineering Contradiction:
Improvevehicle position stabilityVSAvoidobstruction of passage
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent applies preliminary action by determining and instructing the evacuation position before the vehicle needs to move. The system determines the appropriate evacuation position based on the failure type, then instructs the autonomous driving vehicle to evacuate to that position proactively. This prevents the vehicle from remaining stationary and obstructing the passage, while ensuring the evacuation is performed to a safe and appropriate location.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If detailed failure type determination and customized evacuation space determination are implemented, then the evacuation is more appropriate and safe, but the system complexity increases

Engineering Contradiction:
Improveevacuation space appropriatenessVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements self-service by enabling the autonomous driving vehicle to automatically determine its own evacuation position based on its failure type. The vehicle's own information (failure type, position information) is used to determine the evacuation position without requiring complex external intervention for each case. This reduces system complexity while maintaining high reliability through automated, failure-type-specific evacuation position determination.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system uses feedback from the failure type determination to adjust the evacuation position determination. The failure type information feeds back into the evacuation position determination process, allowing the system to select appropriate evacuation positions based on the specific failure characteristics. This feedback mechanism ensures high reliability without requiring overly complex manual intervention for each failure scenario.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11458962B2Automatic parking system
Publication Date: 2022.10.04 TOYOTA JIDOSHA KK
  • US11458962B2 patent drawing
  • US11458962B2 patent drawing
  • US11458962B2 patent drawing

AI summary

An automatic parking system park autonomous driving vehicles in a target parking space in a parking lot by instructing the autonomous driving vehicle in the parking lot. The system includes: a failure type determination unit configured to determine a failure type from among a plurality of preset failure type candidates, when a vehicle-induced failure occurs in an automated vehicle under autonomous driving in accordance with the instruction, an evacuation space determination unit configured to determine an evacuation space based on the failure type determined by the failure type determination unit, the position information of the autonomous driving vehicle, and the parking lot map information, and a vehicle instruction unit configured to execute an evacuation instruction to evacuate the autonomous driving vehicle to the evacuation space.