论文标题:基于互联网的暖通CAD开发方法的研究
Active Power Correction Strategy Research in Reliability Worth Assessment of Composite System
论文作者 张泉
论文导师 陈在康,论文学位 博士,论文专业 供热、供燃气、通风及空调工程
论文单位 湖南大学,点击次数 5,论文页数 116页File Size8069k
2001-11-12论文免费下载 http://paper.dic123.com/lunwen_106408107/ 互联网;暖通CAD;三层结构;组件;数据库
Internet,HVAC CAD,three-tier architecture,Component object model,database
互联网环境下的暖通CAD提供了互动设计方式，其设计过程模式发生了根本变化，为设计数据共享与优化提供了可能。互联网技术及计算机技术发展为网络化暖通CAD软件开发提供了技术基础，本文在分析互联网环境下的暖通CAD开发总体环境、开发机理、总体应用构架的基础上，提出了开发中的关键技术。具体内容如下： 1、在分析传统暖通CAD开发语言的发展历程、特点基础上，给出了基于互联网的暖通CAD混合式语言的具体配置开发环境。根据互联网环境下暖通CAD功能模块需求，提出软件总体构架和开发CAD软件数据流程和组件技术两个关键技术。最后在比较了传统典型的软件开发模型基础上，创造性地提出面向对象与演化型原型模型的组合模型作为网络化暖通CAD的总体开发模型。 2、通过对网络拓扑结构、数据传输机理、网络化暖通数据库组织形式及其开发方法的具体探讨，提出了互联网环境下的暖通CAD数据库实现技术。通过互联网环境数据库使厂商与设计人员能够互动利用数据资源，克服传统暖通CAD数据更新困难和难以保证数据时效性等缺点。 3、分析并建立了基于互联网的三层结构及其开发环境，提出了面向组件的开发方法及其开发流程构架：为了提高对遗传软件模块的复用，创造性地将逆向软件和再工程的概念及方法应用于暖通CAD开发过程。 4、暖通CAD设计中关键环节是决策，其直接决定其它模块的设计结果，本文针对冷热源多因素的决策状况，引入层次化的决策模型，说明在互联网环境下的决策开发方法。并在此基础上探讨了相关模块使用决策结果的关键技术，动态图示参数化设计方法，在设计中可以调用数据库中的数据。最后对暖通CAD图数一体化方法进行研究，分析了其中关键技术，并给出了具体的实现方法，目的是提高设计过程的效率。 5、基于互联网的暖通CAD界面是设计人员输入功能模块初始化数据的媒介，论文给出了应用程序与界面控件的数据传输机制。针对传统暖通CAD帮助文件难以更新的缺点，提出了互联网环境下暖通CAD软件的功能模块中参数、不易记忆的设计规范条文、设计文件的归类存档等环节的帮助文件开发方法。 基于互联网的暖通CAD软件开发方法研究，是将互联网技术引入到专业软件开发应用环节，旨在减少开发中的重复劳动，并通过互联网的信息共享、互动的设计特点，提高设计效率和设计质量。
HVAC CAD based on Internet provides active design mode that is different from the traditional HVAC CAD, the data can be shared in more degree and the designing result can be optimized. It provides the base for developing the HVAC CAD with the developing technology of Internet and computer. The paper analyzed developing environment, mechanism, the overall application framework and then presents the key technology in the process of developing the HVAC CAD. It Includes:1. On the base of analyzing the developing process of traditional HVAC CAD and feature of developing language, the author presents the configure of hybrid language for the Internet environment. On the base of the requirement of HVAC CAD"s module based on Internet, presents the software"s whole framework and the two key technologies, which are data flow and component object model. At the last, analyzes the software"s traditional typical developing model and selects the combination model of the object-oriented method and quick prototyping method as developing the whole HVAC CAD model based on network.2. With the research of the topological architecture of LAN, communication mechanism, the organization type of HVAC database and its developing method, presents several realization technology of database based on the Internet. The disadvantage of updating the data not on time can be overcome, because the designer and manufacturer can actively use data resource with the database on the server.3. Analyzing and building the three-tier architecture of network and developing environment, presents the method of component-object-model and develops framework of data flow. In order to improve reusability of hereditary software module, presents the concept and method of reverse software and reengineer.4. The key technology in the designing process of HVAC CAD is making-decision that directly decides the designing result. Aiming at the condition of many variable factor making-decision of the heater/chiller plant, the author puts forward the AHP (analytic hierarchy process) model to explain the method of the making-decision in the Internet environment. The key technology was pointed out that is the dynamic drawing method, and the parameter was cited from the database of the server in the designing process. At last, the key technology was analyzed and the method was pointed out after researching method of data and drawing integrated in HVAC CAD, in order to improve the efficient in the designing process.5. The HVAC CAD"s interface based on Internet is media which designer can inputthe data and the module can be initialized. The mechanism that the data transmitted between interface and application was presented in the paper. Due to the difficulty for the helping file updating, the paper presents the method of building the helping file in the Internet environment of the HVAC CAD which included the method of using the module, designing criteria, classifying and saving the documents.The purpose of researching method to develop HVAC CAD based on Internet are applying the its technology to HVAC designing and reducing the repeated labor during the developing software, improving the designing efficiency and designing quality with the Internet"s feature which is sharing information and active designing mode.
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