The Design And Implementation Of Automatic Transportation And Sale System Based OPC Communication Interface

With the. development of industry and strengthen in assemble of automatic system that the industrial systematic software has made significant progress. During the work of production and sales in mineral corporations, most of the weighing apparatus work solely to finish simple work of display weight and print mission which kind of work style is not suitable for the need of information management development in modern corporations such as the truck scale, railroad scale, nuclear scale and so on. In order to solve the inconvenient in updating of industrial system hardware and made it much better to achieve the purpose of communication in different corporation's hardware products which could strengthen the stability and reliability of the system. The standardization and unionization of interface has become an unavoidable problem in the field of industrial controlment.The coal transportation and sale system is an information management system with the function that could achieve the coal company transportation and sale system to work from contract, plan, adjustment, balance to data statistic, decision support which including full course track in coal transportation and sale system, statistic and analysis and it also fits for the companies that need coal production and transportation. It mainly fits for the relevant charge department in coal production companies and related coal vocation. The application of coal transportation and sale management system could make the coal corporations to master the execute conditions accurately and promptly that could make the charge departments get the statistic collected data timely.This treatise do a deep research in OPC technology, COM/DCOM technology and Internet technology then put forward the achieve plans for the coal transportation and sale system which based on OPC data access standard and Internet technology and give a detailed introduction to the communication between client and server including OPC client development and OPC server development separately. This data collect system obey OPC data access standard which taking ASP.NET technology as distributed calculate method and combining the advantages in OPC and Internet technology which with acceptable open, expansionary and convenience. The experiment results deeply reveal that the system could satisfy the application need in coal transportation and sale system to a certain extent and it has significant general application with bright prospect.