OPC服务器向OPC-XML服务器转换技术的研究

在深入分析COM和WEB服务的核心构件的基础上,利用VS.net对现有OPC服务器转换,通过COMInterop连接低层的OPC服务器,访问现场数据;然后按照OPCXML规范具体实现OPCXML应具有的功能;最后按照SOAP和WSDL协议,实现OPCXML服务器的WEB服务。完成对现有的基于OPCCOM接口规范的工业数据的XML化工作,很方便地实现了现存的基于COM技术的OPC服务器的升级,使得这两种接口可以和谐地共存。

OPC-XML服务器转换技术的研究及其实现

在深入分析COM和WEB服务的构件组成的基础上,利用VS.NET对现有OPC服务器进行转换,通过COM Interop连接低层的OPC服务器,访问现场数据;然后按照OPC XML规范具体实现OPC XML应具有的功能;最后按照SOAP和WSDL协议,实现OPC XML服务器的WEB服务。完成对现有的基于OPCCOM接口规范的工业数据的XML化工作,很方便地实现了现存的基于COM技术的OPC服务器的升级,使得这两种接口可以和谐地共存。

CIT/XML Security Platform Syntax and Processing

Today companies and organizations are using the Web as the main informationdissemination means both at internal and external level. Information dissemination often takes theform of XML documents that are made available at Web servers, or that are actively broadcasted byWeb servers to interested clients. These documents often contain information at different degrees ofsensitivity, therefore a strong XML security platform and mechanism is needed. In this paper wedeveloped CIT/XML security platform and take a close look to syntax and processing of CIT/digitalsignature model, CIT/encryption model, CIT/smart card crypto and SPKI interface security models.Security services such as authentication, integrity and confidentiality to XML documents and non-XMLdocuments, which exchanged among various servers, are provided.

数字化变电站系统移动端工业监控设计与实现

近几年来,手机、平板等移动端应用越来越广泛,其优点不断凸显。实现移动端的工业监控,成为非常具有实用价值的研究课题。该设计中,实现了以PHP语言为基础的服务器端,并设计以Java Script、HTML5和CSS语言为基础的移动端,服务器端经COM组件访问数据库,并将客户端要请求的数据信息更新至XML文档,实现了在移动端对工业进行实时监控。经实际测试,该设计有良好的稳定性和实时性。