The Design And Realization Of Graphical Remote Terminal Unit

Information Visualization is one new project that brought forward in recent years on the international. The intellectualized level of the system itself also is keeping much and much higher, but the workers still need to receive large amount of information, and make sure the interrelation and developing trend between the data and the result to make out a good judgement in time. So we can resort to the Visualization Technology. At present the study point is how to show the meaning of data and even the relationship among them for the dispatcher involving the software of applying and analyzing, human-computer interaction technology.By researching the state standards and the products and documents of home and abroad, this paper designs and develops a set of graphical Remote Terminal Unit.On hardware aspect, this paper uses hardware-synchronization alternating current sampling technology to sample alternating current electric signals quickly and accurately. Adopting multi CPUs distributed system structure,the core CPU is Intel586 and others are RISC micro controllers of ARM which realize input and output signals to accomplish the data collecttion ,adjustment and control at industry field.The set consists of power module,CPU module, MMI module,DI module, AIO module, DCI module and ACI module.On software aspect, the paper adopts ARM-based C language programming withμC/OS-II embedded real time operation system , and design acAI (alternating current analog input) , dcAI(direct current analog input) , DI(digital input) software sampling module.Software developing consists of theμC/OS-II migration and the application.Finally, the hardware and software test according to relevant requirements verifies the stability and robustness of the device in the field. After testing and analysis, gRTU meeting targets can be put in the scene.