The Research And Application Of Mes-Based Ship Point Of Production Management System

Chinese traditional shipbuilding mode often relies on the experience of managers, coordinating types of work and production activities according to industrial art. It's a type of vague management without precise data of implementation as support. Some shipping companies do have the support of information systems, but the data collected is often fragmented, inaccurate and seriously delayed, which is caused by a non-standard processes and an incomplete system design. In this background, the research on MES-based ship production plan and management system turns out to be a subject of great value.We are confronted with the following problems. On account of the roughness of the block production plan, we can only break main production plan into big point or big craft stage, but not sub-branch processes which can guide actual production of teams in the workshop. Meanwhile, several casual disturbances cannot be solved in time, such as device-breaking down or inspection, duty adjustment or position removal and etc., because of a long time feedback and the lack of essential live information. In particular, many ship types (product tankers, large bulk carriers, offshore platforms, etc.), large design changes and much workload and complexity cause lots of problems in the process, such as process instability, and lack of flexibility.The main ideas to solve these problems are presented as follows. For the discrete planning and scheduling, such as building blocks, schedules of process-level and device-level work plan should be adjusted according to its priority, stuff proficiency, equipments capabilities, and balanced production. This schedule, based on the limited capability, can calculate the processes'start, end and preparation time by considering its staggered, overlapping and parallel operations, can also improve efficiency through better refinement of operational phases. The research is focused on the agility mode of ship block production and management in modern shipbuilding enterprise, which is characterized by the fastest and best response in a complex, changing environment. Therefore it is, by combining the concept of MES functions, to achieve agility in data collection, data analysis, data processing, and data transfer. The key points are rational allocation of resources, optimization of production scheduling and control, improving production management and core of operation which comply with MES. Therefore, in the foreseeable future, more and more modern enterprise focusing on effective management will choose MES implementation and management system on the aspect of informationized management.In the research of the business process, we use the method of combining actual business with on-site, and master the combined scale of both effectiveness and practice. Each business process optimization must be confirmed through various aspects, and data must be calculated and simulated, so that the business processes can meet the status and reflect the systemic integration.In the system architecture design process, we use a service-oriented method to consider the overall architecture design. Different sorts of operating systems, application software, system software are intertwined, and some of the existing applications are used to deal with current business processes. In this way, the enterprise should be able to respond quickly to the changes, with the assistance of the existing applications and infrastructure's investment to address new business needs.Through system design and application process, we can achieve some MES management functions, in order to enhance the ship manufacturing execution level, to help manufacturers reduce the on-spot response time in changing circumstances, to rapidly collect, analyze, and forecast first-hand data and finally provide decision support.