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Title: A VxD-based automatic blending system using multithreaded programming
Authors: Wang, L.
Jiang, X. 
Chen, Y.
Tan, K.C. 
Keywords: Automatic blending system
Multithreaded data communication
Object orientation
Programmable logic controller
Software engineering
Virtual X device driver
Issue Date: Jan-2004
Citation: Wang, L.,Jiang, X.,Chen, Y.,Tan, K.C. (2004-01). A VxD-based automatic blending system using multithreaded programming. ISA Transactions 43 (1) : 99-109. ScholarBank@NUS Repository.
Abstract: This paper discusses the object-oriented software design for an automatic blending system. By combining the advantages of a programmable logic controller (PLC) and an industrial control PC (ICPC), an automatic blending control system is developed for a chemical plant. The system structure and multithread-based communication approach are first presented in this paper. The overall software design issues, such as system requirements and functionalities, are then discussed in detail. Furthermore, by replacing the conventional dynamic link library (DLL) with virtual X device drivers (VxD's), a practical and cost-effective solution is provided to improve the robustness of the Windows platform-based automatic blending system in small- and medium-sized plants. © 2004 ISA - The Instrumentation, Systems, and Automation Society.
Source Title: ISA Transactions
ISSN: 00190578
Appears in Collections:Staff Publications

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