文档介绍：摘要
摘 要
,不能采用现有的设备互操作解决方案。为此,开发了基于XML的可扩展的设备描述语言XDDL。在XDDL的基础上,本文扩展了设备描述元素,并与EPA 功能块相结合描述设备。本文主要工作如下。
(1)深入研究已有的EPA功能块。在分析功能块的结构、组织调度方法的基础上,
对EPA功能块的通信机制和通信接口进行深入剖析。(2)深入分析XML的优势和XDDL的应用模型与应用过程。XDDL定义的基本结
构要素并不完善,不能完备地描述复杂的设备。本文扩展了XDDL的描述元素,设计了界面描述模块、数据描述模块以及通信描述模块,初步建立了一个描述元素库。
通过开发设备描述元素库,并将其与功能块相结合,,方便了设备开发商和用户。关键词:互可操作技术,EPA功能块,XML,设备描述语言
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Abstract
Abstract
Interoperability between devices of different models and different protocols is always one of the key problems that need to be solved in control the proposal of EPA standard, the existing device interoperable solutions are not suitable to an XML-based extensible device description language一一XDDL Was the basis of XDDL,this thesis expanded device description bined with EPA function blocks to describe devices. The main work in this thesis iS listed as follows:
(1)A deep research on the existing EPA function blocks Was the basis of analysis of anization and scheduling method of EPA function blocks,further analysis was conducted munication mechanism munication interface of EPA function blocks.
(parison of advantages of XML and the application model and application process of XDDL were structure elements of XDDL are plete and it Can not plicated paper extended element of XDDL,designed interface module,data module munication module,and built a description elements library
preliminary.
(3)Device description method based on XML and EPA function blocks Was designed,and the new method Was applied in the EPA configuration files management module, link objects configuration module and device management module were designed and the functions of each module were also tested.
The development of device description elements library and bination with function blocks make the description of devices more new device description method plete and convenie