Autonomous Vehicle Control System with Priority-Based Safety Verification
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Solution Overview
Problem
Current control systems for autonomous vehicles can only operate in either automatic or override modes, lacking the ability to generate control outputs based on verified safety, which is inconvenient and limits user usability.
Innovation Solution
A control system that includes a manipulation interface unit generating manipulation value and priority information, an automatic control unit, and a safety verification unit, allowing the output control unit to produce control outputs based on automatic control, manipulation value information, or both, within verified safety ranges, and prioritizing user intervention accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only automatic control or override state is selected, then control simplicity is maintained, but user usability and flexibility are reduced
Solution Approach 1:
The control system dynamically adjusts the degree of safety verification based on priority information from manipulation inputs. When priority information indicates high urgency or importance, the system reduces safety verification restrictions to allow faster response. When priority information indicates routine operations, full safety verification is applied. This dynamic adjustment enables three operation modes (automatic control, override with safety verification, and unrestricted override) without requiring complex manual mode switching, thus improving usability while managing system complexity.
2Reliability
If safety verification is applied to all control outputs, then safety is ensured, but response time in emergency situations is delayed
Solution Approach 1:
The system changes the parameter of safety verification strictness based on priority information derived from manipulation inputs. When priority information exceeds a threshold indicating emergency situations, the system reduces safety verification restrictions, allowing control outputs to be generated faster. When priority information is below the threshold, full safety verification is applied. This parameter adjustment resolves the contradiction between ensuring safety and maintaining fast response times in emergencies.
Solution Approach 2:
Priority information acts as an intermediary between manipulation inputs and safety verification. The manipulation interface unit generates priority information that mediates the level of safety verification applied to control outputs. This intermediary mechanism allows the system to intelligently balance safety requirements with response speed based on the urgency indicated by the user's manipulation, rather than applying fixed safety verification to all cases.
3Speed
If full override is allowed without safety verification, then response speed is improved, but safety risks increase
Solution Approach 1:
The system dynamically changes the safety verification parameter based on priority information. When priority information indicates emergency situations requiring immediate response, the system reduces safety verification to allow full override capability. When priority information indicates non-critical situations, full safety verification is applied. This conditional parameter adjustment allows the system to provide fast response when needed while maintaining safety in routine operations.
Data Source
AI summary
A control system includes: an operation interface generates operation amount information and priority information on the basis of an operation amount; an automatic control unit generates an automatic control output based on a predetermined input; a safety verification unit verifies the safety of the automatic control output; and an output control unit produces a control output in accordance with the automatic control output or the operation amount information on the basis of the automatic control output, the operation amount information, the priority information, and the safety verification result from the safety verification unit. The control output is generated in accordance with the automatic control output, in accordance with the operation amount information only when the control output is verified as safe by the safety verification unit, or in accordance with the operation amount information regardless of whether the control output is verified as safe by the safety verification unit.