This paper study on the distributed real-time and embedded system middleware. Presents a comprehensive overview of the Data Distribution Service standard (DDS) and describes its benefits for developing Distributed System applications. DDS is a platform-independent standard released by the Object Management Group (OMG) for data-centric publish-subscribe systems. The standard is particularly designed for real-time systems that need to control timing and memory resources, have low latency and high robustness requirements. To illustrate the benefits of DDS for precision assembly an example application is presented.

Based on the research of SVG and CIM/G vector graphics standards, through the analysis and comparison of the graphics files of SVG for substation and CIM/G for intelligent dispatching, the difference and correspondence relationship of basic and power graphics elements are found out. Adopting modular design ideas and cross platform technology, using dom4j of Java xml parser to parse the element definition and each power graphics layer of SVG file for substation, hierarchical and classified metafile set of CIM/G format, graphics files of CIM/G format and graphics mapping point tables are generated, according to the mode of element type and state fusion, and graphics element mapping relationship. Proved by engineering practice, the method realizes the seamless connection from the monitoring graphics for substation to the intelligent dispatching system, and the automatic correspondence of the graphics signal points, which can shorten the time of substation graphics standardization operation greatly and reduce engineering pressure on manual point.

According to the new changes brought out by the smart substation, including disappearance of the traditional concept of terminal and replacement of the original point to point cable connection by optical fiber network, a new design method of GOOSE “virtual terminal” is put forward. The method contains GOOSE “virtual terminal”, virtual terminal logic connection line, GOOSE configuration table and virtual terminal information flow diagram, and solves some problems of digital protection, measurement and control device, such as without contact, no terminal, no wiring etc. of GOOSE information. The design method was applied in the engineering practice of the south of Changshu 500kV smart substation in Suzhou, and the effect of designing was very good.

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In order to obtain road information to process and requiring movement precision for intelligent mobile robots, we propose solution based on data collection and analysis to control motor. First, we introduce the basic method of serial communication on Matlab. Then, we design PC serial communication and test platform with step motor in Matlab environment. Finally, we can control the mobile robots’ motor driver by processing external data with Matlab. The results show that the solution improves the data-process ability of intelligent sweep-robots, greatly simplifies the development process, improves the efficiency of system development, and can be humanized to write and modify mobile robots’ motion path by PC.