This article has carried out business requirements analysis , service flow analysis , system oerverall architecture design ( including development and running platform design , security design , inter - system communication interface design ) 本文对长沙市商业银行网上银行系统进行了业务需求分析、业务流程分析、体系架构设计、系统开发与运行平台设计、系统安全性分析与设计、系统通讯接口分析与设计。
Based on study of the telecontrol protocol of the power system and the public switching telephone network ( pstn ) , it is proposed that after appropriate modification channels for power system communication can be established by using pstn 摘要通过对电力系统远动规约和公话交换网的研究,提出理论模型,即通过公话交换网建立通道,并将其用于电力系统通信通道,经过适当改进,运用于实际工程中,得到了满意的结果。
The paper begins with analyzing the development of electric system automation and the actuality of electric system communication , and makes a deep study in iec870 - 5 - 101 protocol produced by iec , puts forward the application thoughts of the protocols 本文从分析电力自动化的发展以及电力通信的现状为出发点,对iec制定的远动设备及系统传输规约iec870 - 5 - 101规约做了较为深入的研究分析,提出了101规约的应用思路。
After introduced the feasibility and the principle and method of using gprs cell - phone is discussed , a hydrology telemetric system based on gprs mobile phone is structured , planned , and designed , the central station and remote stations are realized , some improvement and a circuit graph of the structure of remote stations is given . finally , the main structure and some important part of system communication program is given . this dissertation also probed the cpfsk method using mcu 本文探讨了水情遥测系统的组成结构,现有的各类水情数据通信方式的优缺点,以及多种移动通信方式,并比较各种水情通信方式的优缺点;分析在水情遥测系统中使用gprs蜂窝电话的可行性及其选型原理等情况,并着重探讨了基于gsm通信方式的水情遥测系统的组成结构、工作原理及中心站、遥测站等,改进遥测站结构,并给出改进后的遥测站的实验电路图。
This software communicates real - timely with the slave computers of the coal gasification reactors using user - defined corresponding protocol , while its main interface simulates running environment of the scene , displays various parameters gathered from the coal gasification reactors ; at the same time the software stores data to exterior sql database , so as to realize the long keep of the real - time data and the historical data ; in addition , there is opc server interface embedded in the software , so this software successfully solves the difficult problem of different systems communication 该软件通过自定义的通信协议与造气炉下位机之间进行实时通信,利用主界面模拟现场运行环境,动态显示造气炉各类运行参数;同时,通过建立外部sql数据库,实现实时数据与历史数据的长久保存;另外,该软件设计有内嵌opc服务器接口,成功地解决了本系统与其它设备系统之间的通信难题。