Transportation System Load Port Prediction
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Solution Overview
Problem
Existing transportation systems face inefficiencies in direct load port transportation due to unpredictable availability of load ports, leading to increased temporary storage times and reduced transportation efficiency.
Innovation Solution
A prediction mechanism is implemented to determine whether a load port will be available within a predetermined time, allowing for direct transportation to the load port if available or temporary storage in buffers if not, with the ability to adjust transportation commands based on estimated arrival and removal times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If articles are transported to load ports without prediction of availability, then transportation commands can be issued simply, but transportation efficiency decreases due to increased temporary storage time
Solution Approach 1:
The system performs preliminary prediction of load port availability before issuing transportation commands. The prediction unit estimates when load ports will become vacant, and this information is used to make advance decisions about whether to transport articles directly to load ports or to buffers, thereby avoiding unnecessary temporary storage and improving transportation efficiency
Solution Approach 2:
The system establishes a feedback loop where the actual availability of load ports is monitored and compared with predicted availability. This feedback information is used to refine future predictions and adjust transportation commands, creating a continuous improvement mechanism that enhances transportation efficiency while reducing temporary storage time
2Productivity
If articles are transported directly to load ports, then transportation efficiency improves, but the system becomes vulnerable when load ports are unavailable
Solution Approach 1:
The prediction unit performs preliminary assessment of load port availability before committing articles to direct transportation. By estimating vacancy times in advance, the system can make informed decisions about direct transportation versus buffer storage, thereby improving both efficiency and reliability
Solution Approach 2:
The system uses buffers as a cushioning mechanism for cases where direct transportation is not feasible. When prediction indicates load ports will be unavailable, articles are routed to buffers instead, providing a backup path that maintains system reliability while minimizing the impact on transportation efficiency
3Productivity
If prediction mechanism is implemented, then direct transportation opportunities increase, but system complexity increases
Solution Approach 1:
The prediction mechanism uses feedback from monitored load port status and historical data to make predictions. This feedback-based approach allows the system to implement sophisticated prediction logic without requiring overly complex infrastructure, as the prediction unit leverages existing system data and observation mechanisms
Solution Approach 2:
The prediction unit acts as an intermediary layer between the transportation command issuer and the physical transportation system. This intermediary processes availability information and translates it into optimized transportation commands, thereby increasing direct transportation opportunities while managing system complexity through a dedicated prediction module rather than distributed complexity
Data Source
AI summary
In the case of transporting an article to a load port which is occupied by another article, at the time of generating a transportation command, estimated arrival time T1 when the article arrives at the load port and estimated removal time T2 when the article which occupies the load port is removed are compared with each other. If the time T2 is earlier than the time T1, a transportation command for transporting the article to the load port is assigned. If the time t2 is later than the time T1, a transportation command for transporting the article to a buffer on the upstream side of the load port is assigned.