【作者】 薛丰；

【导师】 熊有伦； 丁汉；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2004， 硕士

【摘要】 分布式测量与控制系统正在从基于现场总线技术的软硬件平台,转向支持开放的、标准化的技术解决方案。应用无线通信技术、Internet技术和标准智能传感器接口的测控系统可望形成下一代分布式测控系统的雏形。本文对应用无线通信技术、Internet技术和IEEE1451系列标准的分布式测控系统的设计与实现进行了深入系统的研究,并初步建立了一个分布式测控原型系统。本文首先分析了传统测控系统的特点,针对传统测控系统存在的不足,对比性的阐述了无线通信技术和Internet技术各自的优势与潜力,提出了构建以GPRS、Internet和IEEE1451标准为基础的分布式测控系统。通过分析市场对测控系统的功能需求,定义了系统的功能目标,建立了测控系统的层次结构模型,确定了C/S结构与B/S结构相结合的软件结构和应用模式。实现智能传感器与现有各种网络的无缝连接是一个关键而亟需解决的问题。IEEE1451标准的制定对解决该问题是一个重大进步。本文深入探讨了IEEE1451系列标准,分析了标准的优势与缺陷,并提出了基于TCP/IP协议的无线智能传感器的概念。在汲取IEEE1451标准的优点的基础上,本文提出了无线智能传感器的概念模型,给出了系统结构框架,从智能变送器接口STIM和无线网络适配器WNCAP两个方面阐述了无线智能传感器的设计思想、技术途径和实现过程,并着重阐述了电子数据表格TEDS、数据校正引擎、多变量STIM、数据发送机制和嵌入式TCP/IP协议栈等关键技术的实现机制。最后,本文论述了测控管理软件DRMC的设计与实现。DRMC是在Windows操作系统平台下,运用Visual C++ 6.0和MFC构建,采用多线程机制与同步Winsock相结合的方式实现了DRMC的多线程数据通信,应用DAO数据库编程接口实现了数据的管理,并借助软件芯片的概念,实现了基于软件芯片的信号处理,协作故障诊断。更多还原

【Abstract】 The distributed measurement and control system (DMCS) is migrating away from proprietary hardware and software platforms based on fieldbus in favor of open and standardized approaches. Wireless communication technology, Internet technology, and standardized transducer interfaces are serving to shape the next-generation DMCS landscape. This thesis discusses the design and implementation of standardized DMCS integration based on wireless communication technology 、Internet technology and the IEEE1451 family of standards, and establishes a prototype system.At first, the characters of traditional measurement and control system are discussed in detail. Then the thesis expounds the advantages and potential of wireless communication technology and Internet technology in application to DMCS contrastively aiming at the disadvantages of traditional measurement and control system, and proposes originally building the DMCS integration using GPRS、 Internet technology and the IEEE1451 family of standards. Based on the analysis of function demands of the market for the measurement and control system, the thesis makes sure the function goals of the system, builds framework structure of the system, determines the application model of the system and the software architecture, which is the combination of the C/S structure and B/S structure.Interfacing smart sensors to all kinds of exiting networks is a critical problem. The development of IEEE1451 family of standards is a significant advance to solve this problem. After making an approach to the IEEE1451 family of standards in detail, the advantages and disadvantages of standards are separately analyzed. As an improvement to one portion of IEEE1451, the concept of wireless smart sensor based on TCP/IP protocols is promoted.Deriving the advantages from IEEE1451 set of standards, the conceptual model and the system framework of wireless smart sensor are proposed. The thesis expounds detailedly the design principles、technique approaches and developing process of the wireless smart sensor which is divided into two parts: STIM and WNCAP, and highlights the implementation of key technologies, such as TEDS、correction engine、multi-variable STIM、data transmission mechanism and embedded TCP/IP protocols.At last, the design and implement of the management software DRMC is discussed. DRMC is developed using Visual C++ 6.0 and MFC with the support of Windows OS. The mode that is the combination of multithreading and synchronous Winsock is adopted to <WP=6>realize multithreading data communication. The data records get managed effectively using DAO. By applying the concept of Software Integrated Chip (SIC), DRMC realizes the signal processing function, which is important to fault diagnosis.更多还原