基于LonWorks现场总线技术的可视化组态监视系统的设计与实现

【作者】 林述民；

【导师】 沈德耀；

【作者基本信息】 中南大学 ， 计算机应用技术， 2002， 硕士

【摘要】 本文主要讨论了基于LonWorks可视化组态控制、监视系统的实现原理，并进一步详述了组态监视系统的设计与实现过程。系统的下位机采用动态组合Neuron C函数模块的方式实现控制程序的组态；上位机组态控制平台通过可视化方法建立组态控制参数，再把参数以显示报文分帧的形式传送到下位机；组态监视平台以网络变量方式获取下位机数据，上位机和下位机的两种通信方式通过建立动态数据链接DDE(Dynamic Data Exchange)完成。系统的用户界面采用全中文方式显示，控制和监视功能由图形模块以组态方式完成，这些图形模块以ActiveX控件的形式在存在于系统中，分别用于组态控制以及动态显示下位机的网络变量运行情况。 以可视化组态方式开发LonWorks现场总线系统是对原有LonWorks技术的进一步改进。本系统使用简单、操作方便，用户不必有资深的LonWorks开发经经验也可以进行实践操作。经实际测试，系统在LonWorks实验系统的应用中取得了良好的使用效果。更多还原

【Abstract】 The paper has discussed emphatically on the proceeding of VCSC (Visual Control & Supervising Configuration) system. It also decrypted the design and implements of the supervising system in more details. In the system, programs in the nodes construct control system dynamically by using Neuron C function modules. The upper computer collects user’s control parameters and cuts them into frames that will be sent into the nodes. As for the supervising platform, the computer use standard net variable to communicate with the nodes. The two-communication method is based on DDE (Dynamic Data Exchange). The system has an entire Chinese GUI (Graphic User Interface). All the function modules are saved as ActiveX and they carry out the entire configuration steps in the application, which arranges the user’s control and supervising functions graphically and visually.The VCSC system has improved the LonWorks technique by visual configuration. It is easy to use and can be operated with less LonWorks developing experience. In the runtime test, it works efficiently and has a perfect effect on the LonWorks field bus svstem.更多还原