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An oil control system based on single chip is introduced in this paper, which mainly uses 80c51f020 microcontroller as the core device, and the MODEL2201D expansion module to coupl PC software. The principal computer uses industrial PC match with MODEL2201D communication module, and The communication between principal computer and lower level computer following RS485 agreement. The preccise oil delivering...
Up to now, the “4+1” View model, which has been approbated widely, has become an authoritative method to depict the architecture of software. In pragmatic application, however, this comprehensive description has not been applied well and the relevant research about it has ceased for long time. In this paper, we analyze the core conceptions of the “4+1” View model, and discuss its advantages and limitations...
Computer is the vital element for safety-critical control system. This paper presents a component-based fail-safe computer in railway signal interlocking system (safety interlock computer - SIC). We discuss the methodology and the safety tactics of SIC in detail, moreover, the architecture and safety computation principle are deeply analyzed. The hardware safety integrity level of SIC has been verified...
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