Forklift Remote Stop Control With Steering Angle Retention
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Solution Overview
Problem
Industrial vehicle remote operation systems face safety concerns due to continued travel in inappropriate situations, leading to potential accidents and instability during forced stops.
Innovation Solution
An industrial vehicle remote operation system that includes a vehicle communication unit, a remote communication unit for wireless communication, and a forced stop control unit that decelerates and forcibly stops the vehicle while maintaining the steering angle when a forced stop condition is met, preventing unintended travel directions and reducing operational instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the industrial vehicle continues traveling in inappropriate situations for remote operation, then the remote operation system maintains operational continuity, but the safety is lowered
Solution Approach 1:
The forced stop control unit preemptively stops the industrial vehicle when a forced stop condition is detected during remote operation, preventing potential safety incidents before they occur. This preliminary anti-action overrides continued operational continuity to ensure safety.
2Speed
If the industrial vehicle is forcibly stopped by decelerating without maintaining steering angle, then the forced stop is achieved quickly, but the vehicle may travel in a direction not intended by the operator
Solution Approach 1:
The forced stop control unit stores the steering angle at the moment the forced stop condition is met, and maintains this steering angle throughout the deceleration process. This preliminary action ensures the vehicle continues along the operator's intended trajectory even during forced stopping.
3Productivity
If remote operation is allowed to resume immediately after forced stop control, then operational efficiency is maintained, but instability of vehicle behavior occurs
Solution Approach 1:
The remote operation control unit implements a buffer mechanism that prevents remote operation from resuming immediately after forced stop control. This cushioning period allows the vehicle to stabilize its behavior before accepting new remote operation commands, preventing instability.
4Ease of operation
If the remote operation corresponds to operation performed for the remote operation device is performed during forced stop control, then operational responsiveness is improved, but inconveniences and instability occur
Solution Approach 1:
The remote operation control unit extracts or suspends remote operation functionality during the forced stop control period. By removing the remote operation capability when the vehicle is being forcibly stopped, the system prevents conflicting commands and maintains vehicle behavior stability.
Data Source
AI summary
An industrial vehicle remote operation system includes a forklift truck that includes a vehicle communication unit, a remote operation device that includes a remote communication unit performing wireless communication with the vehicle communication unit and is used for remotely operating the industrial vehicle, and a forced stop control unit configured to decelerate and forcibly stop traveling of the industrial vehicle while maintaining a steering angle of the industrial vehicle formed when a forced stop condition is met, in a case where the forced stop condition is met during a remote operation of traveling of the industrial vehicle using the remote operation device.