The design and implementation of ups monitoring and communication software are presented in the second chapter . after a comparison of different serial communication methods , the event - driven method implemented by using activex components is chosen for the ups monitoring and communication software design . this software provides an implementation mechanism for system monitoring and information communication between the ups and user computers 第二章讨论了ups的通信监控软件的设计和实现,在vc + + 6 . 0的编程环境下,经过串口通信的各种方法的比较,选择了利用activex控件的事件触发法设计和实现了ups的通信监控软件,它包括了ups的下位机和上位机的通信监控软件和ups参数的界面显示软件。
Involuntarily , questions of these engineering datas " management appear , datas " persistance only depending relational model and rdbms is greatly insufficient , so this paper carefully studies object - relational mapping based on rdbms based on the analyse of home & overseas actualities , correlative theories and realizing methods of object - relational mapping , we find opl based on rdbms is the most suitable for object relatinoal mapping of clera . based on the engineering application analyse of opl in clera , function requirements , database modes , interface criterions and functions , running modes of opl have being detailedly described . with the framework of microsoft dna , a kind of realizing method of opl based on com / dcom / activex component technology has being brought forward , and this paper describes realizing keys from base tables " definition , object id and class hx class and inheritance of class , object storage , parallel control and affair , object query , object nesting , relations between objects , support of complex data types , right control of object and buffer management of object 本文在分析对象?关系映射技术的国内外现状、相关理论及实现方法的基础上,研究发现基于rdbms的opl是目前最适合clera的对象?关系映射方法;在clera的opl应用分析的基础上,详细描述了opl的功能要求、数据库模式、接口规范与功能、运行方式等内容;结合microsoftdna开发框架,提出了一种基于com dcom activex组件技术的opl实现思路,并从基本表定义、对象标识与类标识、类与类继承、对象存储、并发控制与事务、对象查询、对象嵌套、对象间联系、复杂数据类型的支持、对象级权限控制及对象缓冲管理等几方面概述了实现要点。
Filiale subsystem sofiware uses b / s three layers framework , sql server database , technologies of asp , ado and activex component to realize functions , such as installation , review elevator information , seal - time monitor , at - once monitor , alert monitor , data analysis , event analysis and so on 该软件采用b s三层体系结构,以sqlserver作为后台数据库,利用asp 、数据库访问和activx控件技术,实现了分公司电梯的系统初装、参数浏览、实时监测、即时监测、报警监测、数据分析和事件分析等功能。
This paper first analyses the developing direction of cad system in the era of internet , and discusses several key technologies of web - based remote design system , including network technique , three - ply architecture based on b / s , asp technique and the method to call remote program using activex components which is based on the theory of com / dcom 本文首先分析了internet时代cad系统的发展方向,研究了基于web的cad远程设计中的主要理论和关键技术,包括网络技术、基于browser server的三层体系结构、 asp开发技术以及利用以com dcom原理为基础的activex组件实现远程程序调用的方法。
We may say that publish subscribe model is success both in theory and application , its development is meaningful to whole communication system . this essay , together with the feather of scada system , examines the principle and model of publish subscribe , describes the architectural advantages and limitations of it , and introduces a network middleware that implements publish subscribe in the way of activex components . at last we compare our design with other products abroad and make further prediction 本论文结合监控系统的特点介绍了realtimepublish subscribe的结构原理和实现模型,分析了rtps相对于其它通讯模式的优点和不足,给出了以activex形式实现的中间件详细的设计实现方案,最后将本设计与国内外相关产品进行了比较并指出了下一步的工作方向。