Elevator Command Filtering for Safe Robot Passenger Interaction
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Solution Overview
Problem
The interaction between elevator systems and machine passengers, such as robots, can lead to unsafe commands that cause abnormal operation of the elevator system, increasing the workload of the control device and potentially compromising safety and reliability.
Innovation Solution
An interaction safety control method that receives commands from machine passengers, determines their safety based on predefined safe sub-interfaces, time intervals, and system compatibility, and filters out unsafe commands before sending them to the elevator control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the elevator control device accepts all commands from machine passengers without filtering, then the system is highly adaptable to machine passengers, but unsafe commands may cause abnormal operation and compromise system reliability
Solution Approach 1:
The patent introduces an interaction safety control apparatus as an intermediary component between the machine passenger and the elevator control device. This apparatus receives commands from the machine passenger, determines their safety based on predefined criteria (safe sub-interfaces, time intervals, compatibility), and only forwards safe commands to the elevator control device. This mediator structure enables the system to maintain high adaptability to machine passengers while ensuring system reliability by filtering out unsafe commands before they reach the control device.
2Productivity
If the elevator control device processes all received commands, then complete command processing is achieved, but the workload increases and may affect system performance
Solution Approach 1:
The patent extracts the command filtering function from the elevator control device and places it in a separate interaction safety control apparatus. The safety control apparatus pre-processes commands by comparing them against safety criteria (safe sub-interfaces, time intervals, machine passenger-elevator compatibility) before forwarding to the control device. This extraction reduces the workload of the elevator control device while maintaining complete and accurate command processing, as the filtering apparatus handles the preliminary validation separately.
3Reliability
If safe sub-interfaces are predefined and restricted, then system safety is improved, but the ease of operation for machine passengers may be reduced
Solution Approach 1:
The interaction safety control apparatus automatically performs safety determination by comparing machine passenger commands against predefined safe sub-interfaces, time intervals, and compatibility criteria without requiring manual intervention. The system self-services the safety validation process, continuously monitoring and filtering commands based on established safety rules. This automated approach maintains interaction safety while preserving ease of operation for machine passengers, as they can issue commands naturally without manually checking safety constraints.
Data Source
AI summary
An interaction safety control between an elevator system and a machine passenger. An interaction safety control method between an elevator system and a machine passenger, which includes: receiving a command from the machine passenger; based on a received command, determining the safety of the command with respect to the elevator system; and in case that the command is determined to be unsafe with respect to the elevator system, not sending the command to an elevator control device of the elevator system.