AGV Departure Priority Control for Port Queue Saturation
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Solution Overview
Problem
In automated guided vehicle systems, when a large number of shelves waiting to be transported are present at the starting point, process efficiency decreases due to inefficient departure management.
Innovation Solution
A method and system for managing the departure of automated guided vehicles by generating work orders with priorities based on the number of shelves waiting to be transported at each port, and resetting these priorities in real-time based on port saturation levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the automated guided vehicle departs to ports with large number of waiting shelves, then the process efficiency is improved, but the departure management complexity increases
Solution Approach 1:
The patent implements dynamic priority adjustment for port selection based on real-time queue values. The system continuously monitors the number of waiting shelves at each port and adjusts the work order priorities dynamically, allowing the automated guided vehicle to adapt its departure destinations in real-time according to changing workload conditions, thereby improving process efficiency without requiring complex static management rules
Solution Approach 2:
The system employs feedback mechanisms by calculating queue values for each port based on the number of waiting shelves and using this information to reset work order priorities. The departure management system receives feedback about port saturation levels and adjusts vehicle dispatch decisions accordingly, creating a closed-loop control system that balances efficiency improvement with manageable complexity
2Productivity
If the number of shelves waiting to be transported at the starting point is large, then the port priority increases, but the vehicle departure timing becomes more complex to manage
Solution Approach 1:
The system performs preliminary calculations of queue values for all ports before generating work orders. By pre-assessing the number of waiting shelves at each port and setting initial priorities based on these queue values, the system prepares departure information in advance, reducing the complexity of real-time decision-making and optimizing vehicle departure timing
Solution Approach 2:
The patent changes the priority parameter of work orders based on port queue values. When a port's queue value (number of waiting shelves) exceeds a threshold, the system resets the work order priority to ensure preferential handling. This parameter adjustment mechanism automatically manages departure timing based on workload conditions without requiring complex manual scheduling
Data Source
AI summary
A method of managing a departure of an automated guided vehicle includes generating a work order for transporting an article stored on shelves immediately next to a first port from the first port to a second port and setting a priority of the work order, generating a movement order for moving the automated guided vehicle from a current point of the automated guided vehicle to the first port based on the work order and the priority of the work order, determining a queue value of the first port which is a number of the shelves storing the article included in the first port, and setting a port priority based on the queue value of the first port and resetting the priority of the work order based on the port priority.