Transport Vehicle Controller Push Out Logic
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Solution Overview
Problem
Conventional transport vehicle systems face increased processing load and potential chain of travel due to push out control, leading to unnecessary vehicle movement and energy inefficiency, as they require complex route calculations and designation of push out destinations.
Innovation Solution
A transport vehicle system that performs push out control by transmitting travel commands along predetermined loop paths without designating a push out destination, using a first distance when a transport command is assigned and a shorter second distance when none is assigned, thereby reducing unnecessary travel and avoiding chain reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If push out control is performed by designating a push out destination, then the transport vehicle can be moved to a specific location, but complicated processing such as route calculation is required which increases processing load and processing time
Solution Approach 1:
The invention extracts the push out destination designation from the control process entirely. Instead of calculating and specifying a destination, the system simply transmits a travel command without destination information, allowing the vehicle to travel along the loop path until it encounters an obstacle or completes a lap. This eliminates the need for complex route calculation while still achieving the push out effect.
Solution Approach 2:
The invention inverts the conventional approach by not specifying where the vehicle should go, but rather allowing the vehicle to go wherever the loop path leads it. The push out effect is achieved not by directing the vehicle to a specific destination, but by allowing it to travel freely along the loop until it naturally encounters conditions that cause it to stop or be pushed out.
2Use of energy by moving object
If multiple transport vehicles are sequentially stopped to suppress unnecessary travel, then energy saving is promoted, but a chain of travel is caused by push out control which prevents vehicles from being stopped
Solution Approach 1:
The invention applies preliminary action by transmitting travel commands to vehicles before they would otherwise be pushed out by subsequent vehicles. The controller proactively manages vehicle movement by issuing travel commands in advance, preventing the chain reaction of push out control that would otherwise occur when vehicles are stopped to save energy.
3Device complexity
If push out control is performed without designating a push out destination, then complicated processing is eliminated, but the transport vehicle may travel longer distances causing unnecessary movement
Solution Approach 1:
The invention uses periodic action by having vehicles travel along the loop path for one complete lap or until they encounter an obstacle. This periodic traversal ensures that vehicles do not travel indefinitely without purpose, as the loop structure naturally limits travel distance to one cycle unless push out conditions are met.
Data Source
AI summary
A transport vehicle system includes a controller that controls multiple transport vehicles. The controller performs, push out control to, when a transport vehicle travelling on a main route approaches a push out target vehicle, transmit a travel command to the push out target vehicle, and travel stop control, when there is no transport vehicle to which a transport command is assigned on the main route, sequentially transmit a travel stop command to the multiple transport vehicles travelling on the main route. In push out control, when there is a transport vehicle to which a transport command is assigned on the main route, a first travel command for a first distance is transmitted, and when there is no transport vehicle to which a transport command is assigned on the main route, a second travel command for a second distance smaller than the first distance is transmitted.