Research On Database Of The Supervisory Control Configuration Software

With the rapid evolvement of the technologies of computer, communication, and industry control, People hope our industry equipment can be more intelligent, the remote supervisory control of the industry equipment has been the hot-topic in the field of industry control research.This thesis meets the need of the remote supervisory control in industry field, studies the client supervisory control configuration software and its core—database. Its background is a task of remote supervisory control round-net printer. Firstly, the mentality and method of designing the supervisory control configuration software is dissertated. In the design of its structure, the systematic development environment and running environment are detached;they are linked by self-defined configuration files. The structure of graph, control, interface and the source of PLC etc are defined in it. It is described in C, which is a condition for the supervisory control configuration software to apply in different flat. Then, the mentality and method of designing the database which based on it is studied emphatically and a series of methods are adopted to enhance the capability of database. For example, time dimensionality is added to the database and the data are bound with time tags, so we can evaluate the real-time ability of data through the PRI based on time;The HASH table that is a high efficient structure is adapted to express the organization form of the database and the index. This kind of structure makes the search of position of data more rapidly;contra-posing the characteristic of the supervisory control configuration software, the mechanism combined with windows multi-thread mechanisms, which enable the real-time database system to fully utilize the advantage of windows systematic mechanism is adopted to deal with the real-time transactions. Finally instantiation the mentality and method of designing through apply it to the control system of the round network printer.The item which the thesis based on has been checked and accepted, introduction of the different methods and technological means described above, the supervisory control configuration software and its database can obtain better performance, so it satisfies the user.