Industrial Vehicle Remote Operation Under Communication Delay
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Solution Overview
Problem
Industrial vehicle remote operation systems face communication delays due to varying environmental conditions, leading to reduced responsiveness and operability.
Innovation Solution
An industrial vehicle remote operation system that includes a vehicle communication unit and a remote operation device with a signal generation unit, delay time calculation unit, communication delay determination unit, and handling control unit, which calculates and manages communication delays by comparing reception and generation periods of remote operation signals to determine and handle delays effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is performed between remote operation device and industrial vehicle, then remote operation capability is achieved, but communication delay is caused reducing responsiveness
Solution Approach 1:
The system calculates delay time in advance by comparing reception period and generation period of remote operation signals, and prepares communication delay handling control strategies before actual delays affect operation responsiveness
Solution Approach 2:
The system continuously monitors communication delay by comparing signal generation timestamps with reception timestamps, and adjusts operation control based on the calculated delay time to maintain responsive remote operation
2Device complexity
If communication delay determination is made using only one remote operation signal, then determination process is simple, but accuracy of delay determination is reduced
Solution Approach 1:
The system divides delay determination into multiple measurement segments by analyzing multiple remote operation signals, calculating delay time for each signal and aggregating results to achieve accurate communication delay determination without excessive complexity
Data Source
AI summary
An industrial vehicle remote operation system includes an industrial vehicle that includes a vehicle communication unit performing wireless communication; and a remote operation device that includes a remote communication unit performing wireless communication with the vehicle communication unit. The industrial vehicle includes: a delay time calculation unit calculating a delay time corresponding to a difference between a reception period required for the vehicle communication unit to receive a plurality of remote operation signals and a generation period required for generating the plurality of remote operation signals; a communication delay determination unit performing a communication delay determination for determining whether or not a communication delay has been caused based on the delay time; and a communication delay handling control unit executing communication delay handling control corresponding to the communication delay when it is determined that the communication delay has been caused in the communication delay determination.