Driving Operation Handover System Using Virtual Vehicle State Comparison
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Solution Overview
Problem
Existing driving operation handover systems require vehicles to stop before switching between an occupant and a remote operator, increasing the time required for handover and inefficiency.
Innovation Solution
A system that acquires and compares characteristic values of the vehicle's operation state with a virtual vehicle's state, allowing seamless handover without stopping by calculating a difference value and switching operations when it falls below a threshold, while preventing handover in non-switchable sections and managing load application to confirm handover status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle stops before switching operation between occupant and remote operator, then the handover can be performed safely, but the handover time increases and efficiency decreases
Solution Approach 1:
The system changes the parameter of vehicle motion state from stationary to moving during handover. By calculating the difference between actual vehicle state and virtual vehicle state while the vehicle is traveling, and switching operation when the difference is within threshold, the patent enables handover without stopping the vehicle, thus reducing handover time while maintaining safety
Solution Approach 2:
The system continuously monitors the difference value between actual vehicle operation state and virtual vehicle operation state, and provides feedback to determine when handover conditions are met. This real-time feedback mechanism allows the system to perform handover safely during motion by ensuring state consistency between occupant and remote operator operations
2Ease of operation
If the vehicle stops during handover, then operation switching can be completed, but productivity and efficiency are reduced
Solution Approach 1:
The system maintains continuous vehicle operation during handover by preventing stops. The virtual vehicle simulation runs continuously and compares state differences in real-time, allowing operation switching to occur while the vehicle keeps moving, thus maintaining productivity and efficiency without interruption
3Loss of time
If operation handover is performed while the vehicle is traveling, then time is saved, but the risk of error increases in critical driving conditions
Solution Approach 1:
The virtual vehicle acts as an intermediary between the actual vehicle and the remote operator. It simulates vehicle behavior and provides a reference state for comparison, enabling safe handover during motion by mediating the transition and ensuring state consistency without requiring vehicle stops
Solution Approach 2:
The system performs preliminary simulation of vehicle operation through the virtual vehicle before actual handover occurs. By pre-calculating state differences and preparing handover conditions while the vehicle is traveling, the system enables safe and timely operation switching without stopping
Data Source
AI summary
A driving operation handover system includes a memory and a processor, wherein the processor is configured to: acquire a first characteristic value of preset setting characteristics during travel of a vehicle equipped with a manual operation unit that an occupant operates; acquire a second characteristic value of the preset setting characteristics during travel of a virtual vehicle that simulates the vehicle, which a remote operator operates using a remote operation unit; calculate a difference value between the first characteristic value and the second characteristic value; in a case in which the difference value is lower than a setting threshold value, notify the occupant and the remote operator that operation of the vehicle can be handed over; and after notification, switch operation of the vehicle from one of the remote operator or the occupant to another of the remote operator or the occupant.