The RTDT technology are of the following features:
• RTDT system adopts modular architecture to build the system, making the system of being robustness and flexibility;
• RTDT system is generic enough to handle various scenarios occurring in shop floor production, such as high-mix high-volume (HMHV), high-mix low-volume (HMLV), and low-mix high- volume (LMHV).
• RTDT system is capable to optimally handle urgent orders scenario with mixed WO priority and meet customers’ urgency delivery requirement.
• RTDT system provides options for technology adopters to choose using either autonomous transportation system (such as AIV/AGV, etc.) for material handling if the adopter has such a system, or manual transportation system (manual way for material handling) if the adopter does not have autonomous vehicle yet.
• RTDT system is a web-based system, does not require installation.
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The production dashboard shows production related dynamic information, such as Overall Production status (Planned vs Actual), Production Progress in terms of Over-Due, On-Schedule and Ahead-of-Schedule WOs, as well as WO Progress Details. If any WO is in Over-Due, the WO will be highlighted in WO Progress Details screen to alert person-in-charge of the WO to take immediate action, so as to shorten the response time to such an unexpected event.
RTMC is to fetch various machine events in real-time to support needs in production execution and tracking. RTMC realizes the real-time data collection/events capture through publish-subscribe network protocol to transports messages between producers (Machines) and consumers (Task Handlers). RTMC adopts multi-threading technology to handle multiple event producers and consumers with capability of dynamic creation and closure of threads based on length of Message Queue.
The RTMC enables various real-time tracking and monitoring functionality, such as tracking static Machine and Storage, mobile Vehicle, Container, Product (Part) location, etc. The above figure shows the real-time status of all machines in the shop floor.
PETE enables WO execution control through WO prioritization/dispatching which can be either Rule-Based WO prioritization and dispatching (Full-Auto Mode) or manual prioritization and dispatching (Manual Mode). The rules adopted include First-In-First-Out (FIFO), Shortest Processing Time First (SPTF), WO Priority-based, etc. In Manual Mode, Production Manager can assign partial quantity of a WO for execution first. RTDT realizes the real-time production tracking through Watch Dog thread that monitors all real-time machines operations and WOs execution.
Material Handling System (MHS) is responsible for moving the WIP work pieces from one machine to another to complete entire process route. RTDT realizes WIP handling through an optimized MHS algorithm with considering multiple factors, such as Machine status, Buffer status, WO priority and AIV/AGV current position, etc. RTDT also implements a Fleet Management for different types of vehicles, which synergistically works with the optimized MHS to achieve an effective and efficient MHS.