Safety-Enabled Control Architecture for Authorized Autonomous Switching
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Solution Overview
Problem
Current system control technologies lack robust mechanisms for ensuring safety-enabled control of systems, particularly in transitioning between supervised and autonomous modes without explicit authorization and intent.
Innovation Solution
The proposed system integrates a safety system with a control system, utilizing a safety-enabled control architecture that includes a safety system coupled with a control system, interface devices, remote control units, and a management platform. This architecture ensures that switching to autonomous mode requires explicit authorization and intent, and allows for controlled operation in both supervised and autonomous modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system allows automatic switching between supervised and autonomous modes, then operational efficiency is improved, but safety control is worsened due to lack of explicit authorization
Solution Approach 1:
The patent introduces an intermediary authorization mechanism that mediates between mode switching requests and actual mode transitions. The system requires explicit authorization (such as user confirmation or supervisor approval) before switching between supervised and autonomous modes, preventing unauthorized or accidental mode changes while still allowing efficient operation once authorized.
2Reliability
If the system requires explicit authorization for mode switching, then safety control is improved, but device complexity is worsened due to additional authorization mechanisms
Solution Approach 1:
The patent segments the control system into distinct functional modules: mode switching logic, authorization verification logic, and execution logic. This segmentation allows the authorization mechanism to be implemented as a separate, manageable component rather than embedding complex authorization checks throughout the entire control system, thereby reducing overall complexity while maintaining safety.
3Ease of operation
If multiple remote control units can operate the system simultaneously, then ease of operation is improved, but safety control is worsened due to potential conflicting commands
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors which remote control units are connected and active. When multiple units are connected, the system provides feedback about the current control state to all units and requires coordination or explicit authorization for mode changes, preventing conflicting commands while allowing multiple users to operate the system.
Data Source
AI summary
Systems and methods for safety-enabled control by: establishing a wireless communication channel with a plurality of remote control units via the wireless interface device; in response to establishing the wireless communication channels, operating a system-under-control in a supervised mode based on input received from at least one of the plurality of remote control units; in response to a mode switch command received from a first remote control unit of the plurality of remote control units, providing the other remote control units with a request for a mode switch confirmation; and, in response to confirming receipt of a safety-rated input from an autonomous control system and receipt of a mode switch confirmation from each of the other remote control units, operating the system-under-control in an autonomous mode based on input received from the autonomous control system.