According to the program , set forth the exploitation and realizing methods of the opc control of keeping and getting data and trendy picture display and the alarm control , subsequently introduce how to set the control in the asp page , how to release the asp page through the web server and realize browsing real - time measured data in ie browser 在此基础上，运用activex控件技术开发出了opc数据读取及趋势图显示的opc - activex控件和opc报警控件。其后又将该控件嵌入asp网页，并通过web服务器的发布，实现了在ie浏览器中实时浏览被测量的趋势图。
The four modules in the system basically satisfied with the management requirement of middle and small foundry enterprises . especially in the quality management module , the general casting defects are displayed in the manner of histogram and trend chart . the manager and technician could know the situation of casting defects clearly and take the corresponding measures to improve the quality of castings 该系统设计的四个模块基本满足中小铸造企业管理的需要，特别是质量管理模块对铸造生产中常见的几种缺陷以直方图和趋势图的方式显示出来，使得企业管理者和工程技术人员清楚地了解了废品情况，从而采取相应的改进措施来提高产品的质量。
According to the real raw material purchase situation of a certain metallurgy enterprise , a purchase model is established and the chaotic neural network is applied to the model to obtain an optimized purchase strategy . results show that , with this optimized strategy , a considerable amount of capital has been saved 该系统不仅包括原料采购决策、原料库存优化和原料采购量价预警这三个部分，还具有各种数据的输入、历史的或实时的趋势图的显示以及各种报表的打印等功能。
In this text , the study was conducted to the diesel engine running - in on test bed by advanced oil analysis , surface analysis and characteristic parameters analysis of diesel engine during running - in . based on the spectrographic analysis , ferrographic analysis , particle counting , and scanning electronic microscope analysis , the extraction of lubricant analysis results have been completed by various methods as limits method , fuzzy synthesis analysis , tendency chart analysis . on the basis of information , issued from above analysis the quality comprehensive assessment model of diesel engine running - in has been established , used to assess the diesel engine running - in quality and engine test - bed running - in quality 本文以柴油机台架磨合过程为研究范围，采用先进的油液分析技术，表面分析技术和柴油机性能参数分析技术相结合的方法，在采集柴油机台架磨合阶段磨合润滑油样和相关信息，对柴油机台架磨合润滑油样的光谱分析、铁谱分析、颗粒计数分析等技术手段获得的各种信息进行特征提取，结合来自于分析铁谱和扫描电镜的特征图像信息，以及柴油机性能参数中的特征信息，用界限值分析法、模糊综合分析法和趋势图分析法等多种方法，并融合其他相关的特征信息，建立柴油机台架磨合质量综合评价数学模型，综合分析柴油机台架磨合质量，研制开发了柴油机台架磨合质量综合评价系统。
Plc is widely used in automatic control for its strong function , high reliability , wide applicability , modular structure and etc . many customer services , such as showing process - flow charts , displaying dynamic - data - base interfaces , editing tables , generating charts , managing production and etc , can be provided by connecting personal computers ( pcs ) to a plc network . in a plc - pc system , plcs , which serves as the low - level units , are used to collect and control the data , ( for example , the on / off quantities and analog input / output quantities ) 把个人计算机连入plc网络可以向用户提供诸如工艺流程图显示、动态数据画面显示、报表编制、趋势图生成、窗口技术以及生产管理等多种功能，作为底层单元的plc完成对现场开关量、模拟输入输出量的控制处理，而利用微型计算机良好的人机对话界面和数据处理功能，实现对一台或多台plc进行监控，充分发挥plc可靠、灵活的控制性能和计算机在管理、监控等方面的优势，提高控制系统的整体自动化程度。
