Dynamic Data Exchange for Collaborative Design Based on Internet

The dynamic data exchange is the key to the realization of the collaborative design based on Internet. The features of data for collaborative design based on Internet are analyzed. The data transformation, the data transmission and the data transaction of collaborative design based on Internet are researched. The system configuration and organization mode of dynamic data exchange for collaborative design Internet-based are developed, in which, STEP serves as the product data exchange standard, and ORACLE is the kernel database of the system, so that each of the CAD systems can synchronously access the ORACLE database, share and exchange the design information. The STEP-ORACLE serves as the organizing mode of dynamic data exchange for the collaborative design based on Internet, which realizes the real-time exchange and consistency of the dynamic data between the different platforms and CAD systems.     

Realtime Collaborative Design System Based on AutoCAD

It is hard to realize the Realtime Collaborative Design due to the limitation of network bandwidth and some other reasons over Internet. A Realtime Collaborative Design System is constructed with complete distribution construction and concentrated distribution construction. Based on the research of outcome of the research group, the dynamic data format is modified and optimized, it reduces the load of network in collaborative design to meet the requirement of realtime and enhances the capacity of rapid response and stability of the system.     

Dynamic data exchange based on STEP-OODB for network-supported collaborative design

This paper analyzes the features of data for network-supported collaborative design, researches the data transformation, the data transmission and the data transaction of collaborative design. The system configuration and organization mode of dynamic data exchange for network-supported collaborative design are developed, in which, STEP serves as the product data exchange standard, what's more, Object-Oriented Database (OODB) is the kernel database of the system, so that each of the CAD systems can synchronously access the OODB, share and exchange the design information. The STEP-OODB serves as the organizing mode of dynamic data exchange for the network-supported collaborative design based on Internet, which realizes the real-time exchange and consistency of the dynamic data among the cross-platforms and CAD systems.     

Research on Independent Product Development for Concurrent Collaborative Environment & Supporting Technologies

This article deals with the research on the features and collaborative process of independent development of key automobile parts. It generally employed concurrent engineering theory and technologies of Internet & Intranet, computer aided design (CAD), computer aided manufacturing (CAM) and product data management (PDM). Field knowledge on independent development of key automobile parts was concluded and a set of concurrent collaborative environment and key enabling supporting technologies that face the independent development of automobile body panel dies were also built up. Meanwhile it introduced the secondary development methods of knowledge based engineering (KBE) to implement the knowledge transformation of designing and manufacturing experiences for an enterprise. The results was applied for the development & production of one of this enterprise's new automobile styles and work well.     

Solid Model Design on the Features of Products

To research the problem of plastic art design and emulation of products with the virtual reality technology can short the product development cycle and reduce the cost. This paper discusses the information based on the product feature ,solid model with parameters, the structure and function of this system. Combined the product properties with its solid model. Proposed a method with CAD to create the model of the product based on features in the product design. Expressed its feature parameter and shape of model fully .In the case for a deceleration box the feature model has solved the problem of physical information ,geometry information and the informative process in its production management system efficiently.     

Research on Cooperative Design Network Security Based on IP-VPN

As the important method and instrument of agile manufacture,the technology of distributed collaborative design and manufacturing has become the hotspot of manufacturing. The basic concept and key technologies of IP_VPN are introduced in this paper,and a collaborative design network model based on IP_VPN is presented. Distributed collaborative design is a multi_user,multitask involved system, which is consisted of lots of collaborative processs,so the network security is the key of distributed collaborative design. We research on the security of collaborative design network based on IP_VPN, hence get a conclusion:we can construct an economical?practical and secure collaborative design network system by the application of data encryption,user authentication and access control based on the role,etc.     

Development Trend of Computer Aided Architectural Design(CAAD)

Through the review of history of CAD and CAAD technology development,combined with the application condition of CAAD technology in architectural design,this paper analyzes the theory and advantage of Virtual Building design,dissertates the development trend of computer aided architectural design(CAAD).The Virtual Building model is a complete database including all of the building information,which can be applied in the whole building industry such as building design,structural design,facility management,costing etc.,so as to manage all of the information during the building's life circle.     

Application of at Algorithm in Shoe Last Deformation Design

Deformation design is main content of shoe last CAD system. This paper introduces adaptive tangency (AT) algorithm, which is used to calculate the sectional curve when a known plane section shoe last under a discrete model, and describes its application in shoe last deformation design. Shoe last data can be converted each other in shoe last deformation design, which ensures data format standardized in whole CAD procedure. The detailed algorithm in deformation design is fulfilled and an actual example is given, which shows AT algorithm's application is successful.     

Finite Element Simulation of Inhomogeneity and Anisotropy of Proximal Femur

To solve implant's looseness and subsidence, and to adapt for the requirement of custom-made hip endoprostheses' rapid automatic design and manufacture, a new method is presented for constituting the anisotropic and inhomogeneous model of proximal femur based on CT, CAD technology and finite element analysis during design of custom-made hip endoprostheses, Raw CT image data, 3-D modeling and finite element software is utilized to set up 3-D finite element model of proximal femur. The model is provided with anisotropy and inhomogeneity by self-developed specific software. The near true proximal femur model is structured and good biomechanics condition is provided for optimize design of custom-made hip endoprostheses. For simulating and analysing of proximal femur's structrue and material mechanics property, and determining stress ,strain and response after-operation under the action of physiological load more exactly, and supplying design of custom-made hip endoprostheses with data, the method can provide biomechanics condition for optimize design of custom-made hip prostheses.     

BIM Based on Intelligent Parametric Modeling Technology

In order to push the informationization process of the building industry,promote sustainable architectural design and enhance the competitiveness of China's building industry,the authors study BIM(Building Information Modeling) based on intelligent parametric modeling technology.BIM is a new technology in the field of computer aided architectural design,which contains not only geometric data but also the great amount of engineering data throughout the lifecycle of a building.The authors also compare BIM technology with 2D CAD technology,and demonstrate the advantages and characteristics of intelligent parametric modeling technology.BIM,which is based on intelligent parametric modeling technology,will certainly replace traditional computer aided architectural design and become a new driving force to push forward China's building industry in this Information Age.     

Opening Architecture of Collaborative Design Grid and Its Key Techniques

OGSA, as a universal grid computing frame, has resolved a good many problems in the CSCD, and provides a new solution for the network-based collaborative design. This paper studied the main problems in application of the grid technology to network-based collaborative design system by the OGSA based the WSRF, which is used as the basic platform of collaborative design grid. The meaning of the collaborative design grid is explained, and then the opening architecture of collaborative design grid design process on the condition of eoll is presented based on the function analysis in detail. Meanwhile, the collaborative aborative design grid is explained, and the key technologies of the collaborative design grid are analyzed deeply. The results provide a solution and groundwork for the more research on the collaborative design grid and its implementation.     

XMPP应用于物联网通讯协议的研究

为解决物联网系统之间的信息交换、互联共享问题,探索一种以XMPP协议为基础的物联网通讯协议。本协议定义了物联网端、网关、服务器3个角色,服务器承担各物联网的信息记录、连接管理和信息路由等功能,网关承担不同物联网系统之间的互联互通,各物联网之间相互通信的指令和数据采用XML数据流,采用类似电子邮件地址结构进行寻址。该标准技术协议在农情监测系统中进行了试用,能同时采集不同物联网系统的数据,相互之间还能进行数据交换,可促进物联网系统的整合和综合应用。     

Communication Platform Based CORBA and java in Collaborative Design

The present status and problem for collaborative design are analyzed. A communication system structure based CORBA principle and the Java distributed programming technology is developed. The capability of CORBA and Java supplying is compensated each other in this structure system. The integration of CORBA and Java is proved to be a more effective designing platform for distributed collaborative design in the area developing WWW-based applications. Highly efficient safe communication is realized for collaborative design.     

南昌市绿色廊道景观格局研究

根据南昌市廊道特点,将廊道划分为：灰色廊道、绿色廊道和蓝色廊道,利用GIS和CAD的图形分析和处理功能,获取了南昌市各类廊道现状图,并绘制出相应拓扑图。对南昌市绿色廊道景观构成和网络结构进行分析评价,指出南昌市绿色廊道存在的问题和不足,并提出建设建议。     

基于ZigBee技术的物流仓库温湿度监控系统设计

针对电商快速发展导致物流交易量增加,从而给仓库存储带来较高成本的问题,提出了一种基于ZigBee技术的物流仓库温湿度监控系统设计。本文结合快速发展的无线传感器网络技术,对物流仓库的温度和湿度状态进行监测,并通过ZigBee技术将传感器数据传输至汇聚节点和嵌入式网关设备,并由嵌入式网关设备将数据转发至监控中心,同时监控中心可以根据仓库状态自动开启相关控温和控湿设备。经实际运行验证,本系统可以实现数据自动化采集、传输和显示温湿度,所设计的系统可以有效提升物流企业的仓库状态监控效率,达到智能化管理要求。     

Application of ObjectARX Technology in Power CAD

Considering Object oriented design, abstract mechanism of object and technology of procedure design in ObjectARX are introduced.By analyzing characteristics of power network, the puper it elaborates process of definition special object by using of open structure of AutoCAD inner database , base class provided by ARX and mechanism of calss inheritance and derivative. The class definition of elemens is also given in power system as well. Technology of data exchange is also elaborated. On this base ,object models of power CAD are constructed.Date exchange between PWCAD and the external database is also realized.     

Task decomposition and resources allocation of product collaboration innovative design

To deal with the complexity problems of design tasks decomposition and allocation in the process of product collaborative innovation, a task decomposition model based on mapping level function, structure and task and fuzzy search and matching collaborative partners is proposed by considering the dependencies between the design tasks and the design capacity constraints of innovative subjects. Then on the basis of studying the classification and attributes of design resource, a design resources allocation model with resource use threshold is established to compensate the lack of resource allocation by the priority strategy for design tasks, and the simulation modeling for task-resource allocation based on the time colored Petri net is carried out. Finally, a product collaborative innovation design R & D case of a certain brand phone is imported to verify the effectiveness of the proposed model.     

管控一体化在粮库中的应用

管控一体化是控制领域中的一个热门技术。在信息、电子、通讯、控制等技术的快速推动下，管理网络和控制网络的一体化技术取得了长足进步，管控一体化在工业控制系统中的应用也十分广泛。本文以中央储备粮赤壁直属库为例，介绍了直属库管理监控系。统的总体设计和具体实现，展现了一种结合Internet、Intranet和Infranet的应用模式。     

Supplier management model in collaborative product development

Abstract:To manage suppliers who are involved in product collaborative design and innovation, on the basis of collating and analyzing 35 literatures related to co design process and supplier management activities, a three tier model of supplier management in collaborative product development is put forward, which includes tiers of long term strategic management, product development project and co design task. In terms of collaborative product development process, an overall management activities model about suppliers is built. Methods of supplier selection and performance evaluation are studied. A case study related to supplier management in equipment co design from a steel company is provided to verify the theory and methods.