Port Logistics Equipment, Multi-network Interconnect Technology

Regarding the "Container Port Logistics Information Platform Key Technologies" subject as background, this thesis researches the connection of the isomerous network of port logistics equipment information. Based on the technologies of components oriented, it putsforward a scheme of real-time information transparent transmission in soft environment, and the entire network-sharings.According to the developing requirement of port modernization, information and digitalization, the system of logistics equipment control and management was divided into three tiers from the bottom : the control net, the management net and the decision-making net, which consist the key center of the whole text, putting forward a sharing scheme of the three tiers of network. By using OPC technology based on the Component Object Model (COM)as a communication bridge, the control net part mainly researches the development of OPC data access server. And by means of standard OPC server real-time data interface, this part not only shields the isomerization of various ways of hardware driving and data accessing but also completes the real-time communications of control net and logistics equipment while builting the human-machine interface and the date access, by. Between the control net and management net there is a real-time database as the transitional tier which is used for realizing the unification of spot data collections and backup copies. The management netperforms as the basic practice of the application system which makes advantage of real-time information comprehensively. It selects multilayer models which are based on the middleware technology. The design of each model complies with the principle of reuse, encapsulation, standardization and weak coupling. The decision-making net chooses the application integration technology based on EAI to integrate different datas, applications and procedures of different system. And by using Web Services solutions based on data transmission, this part is able to achieve the integration of Internet-class applications.This paper focuses on the control net part and describes the entire design and...