Auxiliary Control Units for Autonomous Vehicle Failsafe Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Autonomous vehicles face challenges in urban settings due to crowded conditions, which can lead to errors in sensor information interpretation, posing safety risks and limiting their effectiveness in handling unpredictable events such as road construction, obstructions, and emergencies.
Innovation Solution
The implementation of multiple independent control systems within autonomous vehicles, including a primary control system and auxiliary control units that operate independently to provide redundancy and implement predefined responses to safety-critical events, such as potential collisions, by processing sensor data and communicating with vehicle interfaces to control steering, braking, and other functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single primary control system is used in autonomous vehicles, then the device complexity is reduced, but the reliability decreases when the vehicle operates in crowded urban conditions that may cause sensor interpretation errors
Solution Approach 1:
The control system is segmented into multiple independent auxiliary control units, each capable of independently monitoring sensor data and executing safety responses. This segmentation allows the system to maintain high reliability through distributed intelligence while keeping each individual control unit relatively simple in structure.
Solution Approach 2:
The auxiliary control units are pre-programmed with safety response protocols and can immediately execute predetermined safety actions when sensor interpretation errors are detected, without waiting for the primary control system's processing. This preliminary preparation of response mechanisms enhances reliability during critical urban driving conditions.
2Reliability
If multiple independent control systems are implemented, then the reliability improves through redundancy, but the device complexity increases
Solution Approach 1:
The control system is segmented into multiple independent auxiliary control units, each capable of independently monitoring sensor data and executing safety responses. This segmentation allows the system to maintain high reliability through distributed intelligence while keeping each individual control unit relatively simple in structure.
Solution Approach 2:
The system changes the parameter of control unit independence, allowing each auxiliary control unit to operate with autonomous decision-making capability rather than hierarchical subordination. This parameter change enables reliability through redundancy while managing complexity by standardizing the functional parameters of each unit.
3Adaptability or versatility
If auxiliary control units with independent response capability are added, then the ability to handle unpredictable urban events improves, but the ease of operation deteriorates due to multiple competing control signals
Solution Approach 1:
The primary control system acts as an intermediary that coordinates between the auxiliary control units and the vehicle's physical interfaces. It receives safety responses from auxiliary units, reconciles any competing control signals, and executes the final coordinated action, thereby maintaining ease of operation while enabling versatile independent responses to urban events.
Data Source
AI summary
An autonomous vehicle which includes multiple independent control systems that provide redundancy as to specific and critical safety situations which may be encountered when the autonomous vehicle is in operation.