In the monitoring and control aspect , we establish the layered and distributed architecture of the computer network based on the pattern of dcs by the configure software , and developed the communication software among the multi - stations and between the instruments and the pc 论文分为两个部分，在计算机监控方面，以gefanuc公司的组态软件cimplicity为基础，构造了基于dcs模式的分层分布式计算机监控网络结构。开发出多站点间、工业仪表与站点间的通讯软件。
Aiming at the controlling to production of beer with usual equipment in many beer factories of our country , there ' re many disadvantages in such production process the data of product ca n ' t be protected and analyses , controlling accuracy and mobility ca n ' t satisfy and easily produce the problem of the qualityc it adopts ipc - plc distributed control system , the function of the system is very higl reliability and practically techniques advancement completely meets the demand of modern production , furthermore , improves the demand of development the thesis mainly improves bp neural networks fuzzy controlling self - adaptive controlling arithmetic , according to characteristics of inertia and time lag in beer ' s fermentation process . 本文针对我国大部分啤酒生产工艺虽然开始启用一些控制设备，但多数存在控制过程简单，可视性差，生产过程数据不能进行有效地保存和分析，控制精度和灵活性也欠佳，很容易出现质量的问题。为此我们采用了工业控制计算机与可编程序控制器组成分布式计算机控制系统( ipc ? plcdcs ) 。该系统性能/价格比高、可靠实用、技术先进，完全满足啤酒生产发酵工艺的技术要求，并兼顾了发展的需求。
The third generation of scada , based on the technology of distributing computer net and relation data base , could realize the large - scale internet connection , which is currently applied in data collection , surveillance control and processing control in the fields of electric power system , water supply system , petroleum and chemical industry etc . the fourth generation of scada would adopt the internet technology , object oriented technology , neural network as well as java technology as its main development tendency , aiming at enlarging the integration of scada and other systems , which could finally meet the needs of business management and integrated security economic circulation 现在的基于分布式计算机网络以及关系数据库技术的能够实现大范围联网的第三代scada系统被广泛应用于电力系统、给水系统、石油、化工等领域的数据采集与监视控制以及过程控制等诸多领域。第四代scada系统的主要发展趋势是采用internet技术、面向对象技术、神经网络技术以及java技术等技术，继续扩大scada系统与其它系统的集成，综合安全经济运行以及商业化运营的需要。
In order to reach the requirement of applying for the multi - objective and multi - parameter measuring , we adopt the distributing computer controlling system which the at89c52 single chip was used as core in the system , also the circuit of signal conditioning and data acquisition and processing are all integrated in the system . we use nixie tube to fullfill the displaying function and adopt high - capacity memory to record the data of production process 同时为适应工厂要求对多目标、多参数进行监测的要求，采用了分布式计算机控制系统，该系统以at89c52单片机为核心，内部集成了信号调理、数据采集与处理、显示等电路并扩展了大容量存储器以保存最近几次生产过程的检测数据，同时还采用了rs485网络总线技术可以方便的将数据传输给上位控制中心。
Distributed computing is very important in today ' s computer science and technology development . with the advance of computer networking and communication , more and more computer systems are connected to meet the need of information communicating and source sharing , which constitute distributed computer systems . the programming of distributed systems must be based on the use of distributed algorithms , so that the research on distributed algorithm naturally becomes an active field 计算机网络互连技术与通信技术的发展使越来越多的计算机系统可以通过互连形成网络计算机系统以满足各种数据处理中信息通信和资源共享的需要，从而构成各种分布式计算机系统，并在此基础上发展了大量的各种计算机应用，由此极大地促进了分布式计算理论、方法与技术的发展。
This dissertation analyzes the products quality measurement and control methods and concept and theory of computer aided quality system , studied , put forward a distributed computer aided quality measurement and control method based on network which integrated the distributed quality control cell , collecting and delivering quality information through network and database system in time . it coordinates the activity of quality that involves products whole life cycle proceeded . at last , it is discussed through an application instance that the framework model of computer aided quality system under environment of cims and the information - integrating technique of the system to adapt to cims environment 本文着眼产品质量系统，着重分析和应用了产品质量检测与控制方法和计算机辅助质量系统的技术和理论，提出了基于网络的分布式计算机辅助质量检测、控制，通过计算机网络和数据库系统，把企业相互分离的单元质量保证、质量控制系统和技术有机结合起来，及时采集、处理并传递质量信息，使涉及产品整个生命周期的质量活动得以协调进行，在此基础上通过应用实例探讨了cims环境下的计算机辅助质量系统构架模型及系统适应cims环境信息集成的技术。
In systematic structure the whole system adopts three layers of c / s structure distributed calculation mode it put application logic on the application server of the intermediate level to prevent a large amount of data exchange between the customer end and database . all of these make the system has fast response ability , opening ability and can meet the request of grouping enterprises ; in realizing the system , it has adopted the visual modeling tool and developing instrument when mrpii system developed 在系统体系结构方面，整个系统采用三层c s结构的分布式计算机模式，将应用的逻辑放在中间层的应用服务器上避免了客户端和数据库之间的大量的数据交互，使系统有快速的响应能力、开放性和满足集团化企业的要求；在系统实现方面， mrpii系统开发中采用了可视化建模工具和开发工具。
With regard to the distributed computer control system , the paper gives a minute description on the hardware structure of the control computer , what ' s more , it provides a full and accurate supplement about the software design of the control computer system : data acquisition program , asynchronous serial communication program , command processing program , da output program etc . in addition , according to the standard of rs232 , it works out and realizes a convenient protocol which suits the asynchronous serial communication between the acquisition computer and the control computer 在分布式计算机控制系统方面，文中详细介绍了下位控制计算机系统的硬件结构和软件发计，包括数据采集程序、串行通讯程序、命令处理程序、控制输出程序的设计。此外，本文基于rs232标准，设计了简便的适合于本系统的串口通讯协议，并从软件上给予了实现。论文通过机理分析的方法建立了系统模型。
Icx implement a new e - business application architecture and data integration service based on xml and web service . with xml as data exchange standard format , web service as distributed computing method , icx system realize the transparent communication between heterogeneous applications through soap message 在icx系统中设计了一种新型的基于xml web服务的电子商务应用体系结构，同时研制了一个新型的基于xml web服务的数据集成器，以xml为标准数据交换格式，以web服务为分布式计算机制，通过soap消息实现异构应用间的无缝交互。
At present time , there are some primary shortages in distributed computer monitoring system : due to different communication protocols used in monitoring system , which brings on difficulties when we integrate system ; the application software of monitoring system is poor in interoperability and reusability ; the isomeric characters of net in computer monitoring make it hard to integrate system 目前分布式计算机监控系统存在的主要问题包括：系统中由于现场设备的通信协议以及现场通信网络的差异而导致系统难以集成；监控系统的应用软件的互操作性差、可重用性不强；以及监控系统中网络异构等问题。
