Remote Moving Body Control Under Communication Delay
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Solution Overview
Problem
Existing automatic driving vehicle control systems face intermittent control issues due to communication delays, degrading ride comfort by rejecting remote instructions even for minor changes in circumstances.
Innovation Solution
A device and method that evaluate the degree of change in external conditions using transmission and reception time information, along with recognition information, to determine if control based on remote operation information can be executed, allowing continuous control when changes fall within an allowable range and prohibiting it when they don't.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If remote instruction is rejected when communication delay is detected, then control safety is improved, but ride comfort deteriorates due to intermittent control
Solution Approach 1:
The patent changes the decision parameter from binary (reject/execute) to continuous (degree of change evaluation). By evaluating the degree of change in external conditions and comparing it against an allowable range, the system determines whether to execute remote instructions during communication delays. This resolves the contradiction by allowing continuous control when changes are within acceptable limits while maintaining safety when changes exceed thresholds.
2Ease of operation
If remote instruction is continuously executed during communication delay, then ride comfort is improved, but control safety deteriorates due to use of outdated information
Solution Approach 1:
The patent introduces feedback mechanisms by evaluating the degree of change in external conditions between transmission time and reception time. The system uses outside recognition information to assess how much the environment has changed, providing feedback on the validity of remote instructions. This feedback loop ensures safety by detecting when outdated information would lead to inappropriate control actions.
Solution Approach 2:
The patent performs preliminary evaluation of the degree of change before executing remote instructions during communication delays. By assessing whether external conditions have changed within an allowable range prior to control execution, the system prevents unsafe control actions while maintaining continuous operation when conditions permit.
3Measurement precision
If remote instruction is rejected due to communication delay, then control accuracy is improved, but productivity deteriorates due to interrupted operation
Solution Approach 1:
The patent makes the control system dynamic by adjusting its response based on real-time evaluation of external condition changes. Rather than statically rejecting all remote instructions during communication delays, the system dynamically determines whether to execute each instruction based on whether the degree of change falls within the allowable range. This dynamic approach maintains both accuracy and operational continuity.
Data Source
AI summary
A device for controlling a moving body on the basis of local operation or remote operation by a remote device, evaluates a degree of change of external conditions during an arbitrary time period from the transmission time when the remote operation information is transmitted from the remote device to the reception time when the moving body receives the remote operation information on the basis of the transmission time information, the reception time information, and the outside recognition information, and if the degree of change is evaluated to fall within an allowable range, allows execution of control of the moving body based on the remote operation information, and if the degree of change is evaluated to not fall within the allowable range, prohibits execution of control of the moving body based on the remote operation information.