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Development of process control technology development from discrete devices to share the equipment, from the means of control points, it has gone through four stages of development: the stage of manual control, analog instrumentation control system phase (1950s), a centralized computer supervisory control system phase (60 , began), distributed control systems (DCS) stage (mid 70s). At present, most of the the cabin automatic monitoring system using distributed control system (DCS), the system has the characteristics of centralized management of distributed control, but there are also disadvantages such as risk concentration. The newly emerging field bus control system can achieve real decentralized control, with the advantages of openness and interoperability. But so far, in the field of automation, fieldbus applications mainly been promoted to succeed in the PLC control system developed in the past 20 years (mainly discrete control system). And the earliest demand control of the bus, its system structure and control requirements of complex process control systems, the the fieldbus applications are still in the pilot and the initial stage. This article focuses on the fieldbus technology and applications in the industrial process, LonWorks and CAN fieldbus technology in-depth study, and their characteristics, they successfully applied to the automatic engine room monitoring system and shipping simulation center fire anti-theft monitoring alarm system. Fieldbus technology-based alarm monitoring system as part of the the large ship automation cabin simulation system, changing the traditional DCS control, whether from system design, project implementation, management and maintenance, or from the point of view of the human and material savings point of view, are other technologies beyond. Greatly reduce the use of fieldbus technology after development costs, cabling and installation costs, greatly improve operational reliability, field bus technology in industrial automation, especially in the the ship unmanned automation cabin applications very good prospects. Shipping Simulation Center Laboratory Lonworks bus technology an integral the powerful alarm monitoring system, and the video signal and monitoring system to monitor various areas of the laboratory, to achieve the purpose of the fire security, joint control alarm network era of innovation, and monitoring in the traditional sense is a breakthrough. The paper also explores the application of the remote monitoring system based on fieldbus technology and the web server technology, Internet network - enterprise networks - Fieldbus three modes constitutes a real-time Internet-based remote monitoring system, not only to achieve remote monitoring, also You can achieve a wide range of resource sharing. Real-time monitoring application system architecture on the Internet in the computer environment, from the many ways to improve the performance and scalability of the monitoring system to enhance the system functions, the application prospects.
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