ON THE INTERFACE BETWEEN AUTOCAD AND THE ADVANCED LANGUAGE

This paper comprehensively discusses the interface between AutoCAD and the advanced language. It presents three main ways: by means of . DXF file, SCR file and AutoLISP language. The former two have been used by some people in China. This paper presents the method with its programs for its accomplishment. As to the last one, the author has developed its application with the method for its accomplishment, the problem and the handling method for deletion of library function. AutoCAD can be used as support software for microcomputer CAD. This paper provides some references for technical personnel concerned. The programs in this paper have been all verified by IBM PC/XT, GWO520-CH. The pictures are drawn by DMP-56A.     

Application of Dot-matrix LCD in Speech Terminal

Dot-matrix LCD makes a feature of low power dissipation,small volume,and displaying more information,also widely used in automatic instrument.To provide more better user interface, dot-matrix LCD is used as a displayer.The interface circuit for dot-matrix LCD with MCS-51 singlechip microcomputer and the design of software corresponding are described in detail.Meanings of sixteen signal wires of a port is explained.the initial program of LCD is given,and the principle of Chinese charater and menu display is introduced. The hardware design of speech terminal is simple with a LCD module,while the user interface is more beautiful with the technology of chinese character and menu display. The adjustment of LCD contrast is discussed,and the solution is given.     

Research of CAD System for Space -grid Structures Based on ObjectARX

This paper first presented the architecture of the CAD system for space - grid structures based on ObjectARX, then some key technologies were studied to realize the system, such as interface control method on MFC, graphic database and parametric drive. A CAD system for space -grid structures based on ObjectARX was develooed with AutoCAD API and the Object- oriented technique.     

Expert System for Artificial Intelligence Blast Furnace Smelting Process

In order to upgrade traditional industry and realize the automation of furnace condition judgement and standardization of operation, an expert system for various furnace conditions and breakdown judgement and operation guidance on blast furnace are developed based on the theory of artificial intelligence and knowledge engineering. The system is fulfilled through C++Builder and combined with the actual production picture. The system has efficient and convenient man-machine interface by using menu operation method. The testing and operation of actual production data in simulation system indicate that the system is exact and reliable and can provide both the warning of various furnace breakdown and corresponding operation guidance.     

Database Queries of Drawing''s Associated Information and Its Application

AutoCAD is a plotting tool familiarized and often used. If the database information associated with the graph can be directly found in AutoCAD, It will not only save cost when the user does not purchase softwares such as Mapinfo,Automap etc., but also lighten the user's learning burden. This method has been realized by using ActiveX Automation technique and VB6.0. Firstly, a selection set of current entity graph is constructed to form a block, and the block is named by the associated searching keyword. Secondly,when searching database information associated with the graph, users can click this block and get this block name and the searching result will be displayed by using the block name as the searching keyword. The above implementation method is discussed and some key source codes is given in this paper. A application example to search the devices information in power supply departments' hookup is also given.     

安徽省小麦主要病害预测及管理系统研究

利用Visual Basic 6.0组建了安徽省小麦纹枯病和赤霉病等病害预测及管理系统，系统由病害诊断、预测及防治决策、系统说明等模块组成。整个系统采用菜单提示选择和人机对话方式，使用者只需在合适的运行环境下启动该系统，便可出现主菜单，然后根据自己的目的，从菜单中选择所要执行的项目或输入必要的信息，即能得到满意的运行效果。系统的用户界面友好，一切操作均有屏幕汉字提示。系统经过测试，达到了设计要求，能够准确可靠地运行，与传统的人工管理系统相比，具有明显的优越性。     

The Software System for Computation and Drawing of Ship Properties

The softwa re system suggested in this paper is applied to replace the traditionalhanded-computation forms. It uses the cubic sample interpolation and numerical integral,and is writ-ten with FORTRAN according to the accurate formula. With this software system,the nine sorts ofcomputation results of ship properties can be obtained. The system is con nected through SCR filewith AutoCAD,and ean draw automatically eleven sorts of pictures according to the computation re-sults.     

Features Recognition of Parts Drawing Based on BP Neural Network of Genetic Algorithms

This paper gives a new approach to solve the problem of features recognition of parts drawing form by means of multi - layers BP neural network. The concept and arithmetic of expanding property matrix of parts drawing are brought forward. A feature recognition and extraction system of 2D revolving parts drawing is developed by means of secondary development of AutoCAD R2000. These works have high theoretical and practical value.     

DEVELOPMENT OF COMPUTER AIDED PROCESS PLANNING SUBSYSTEM FOR A CAD/CAPP INTEGRATED SYSTEM

Based on Group Technology, a CAD/CAPP integrated system is developed. This paper mainly covers the research work of the CAPP subsystem. In this subsystem, geometric and manufacturing information is obtained from the CAD data base, modular block programming and full Chinese menu are adopted, process planning is produced with the semi-generative method, and process card involved the operation charts is yielded by printer. The operation is simple and convenient, and the performance is quick. The ? CAPP subsystem is successfully integrated with the CAD subsystem. The subsystem is an advanced CAPP system.     

Study on Pre- & Post- Processing Program for Multi -storey & Tall Steel Frame

A vast amount of information data must be input before finite element analysis of steel frames, such as node information, element information and load information. It is necessary to develop a computer aided design system with 3D interactive function. A CAD system for steel frame based on object ARX is developed with AutoCAD API and the Object -oriented technique. In this paper, some key programming technologies is studied, including design of structures, identification of floor system, also, it has presented the relevant implementing code.     

Design and Implementation of Role-based Access Control in a Teaching System

This paper discusses how to design and implement a security subsystem, which based on the Role-based Access Control technology. By taking a teaching web system as a practical example, the paper establishes an access control matrix, so dynamic menu, page jump, and data access control are loaded. The experimental shows that, the system can controls the access authorized data, and to avoid the illegality access. The practicability and robust in the system is evident.     

基于ES的植被景观多样性评价模型研究

介绍植被景观多样性评价模型的设计思想,然后进行构造其专家系统,该系统采用模块化程序设计技术,分为预处理、综合库、知识库、推理机、知识获取及知识管理和总菜单等6个模块,整个系统在主菜单控制下运行,各模块能独立运行。专家系统程序采用雄风专家系统开发平台VisualXF6.1,GIS由Arc/Info系统支撑。最后以永泰县为应用实例进行研究,创建永泰县植被景观多样性评价专家系统,对全县进行植被景观多样性评价,按景观多样性程度由高到低共评价5个等级,2243.4km2,评价结果与实际情况一致。     

Reserach on the Die Forging CAD System of Long Shaft Type Forgings

This paper,by using AutoCAD Advanced Modeling Extension(AME),solvesthe difficulty of three-dimensional solid object modeling of forging die CAD on a porsonal computer,sets up the die forging CAD system(DFCAD system)of long shaft type forgings. It is convenient todesign die forging processes and forging dies , and can get 3-D and 2-D forging die drawings.     

Portable Data Acquisition Instrument Based on MSP430F149 Micro Controller

This paper introduces the portable data acquisition system based on MSP430F149 micro controller. In this system, PGA chip MCP6s28 is applied to reduce the quantity of devices and power dissipation of the system. Real-time transmission is implemented by the wireless data transceiver. Large memory capacity make it convenient for field operation. The system realizes the menu management by using the graphic LCD. It has the features of small size,low power dissipation, high conversion rate.Therefore,the system is suitable to use dry battery and work in confined space.     

AutoCAD在测量苹果砧木枝条解剖结构中的应用

为了验证AutoCAD在测量苹果砧木枝条解剖结构中的应用,以2年生Y-1苹果矮化砧木植株为试材,实例介绍了用AutoCAD软件测量解剖结构组织长度及面积的方法,通过分别用IPE法和AutoCAD法测量了精确1mm和1mm2台尺的长度,苹果砧木Y-1 1年生枝各组织厚度、不同部位导管及筛管面积,比较了2种方法的精确度及对苹果砧木枝条解剖结构各组织测量值的差异显著性。结果表明,和IPE法相比,AutoCAD法测量精确度较高,且用2种方法测量苹果砧木Y-1 1年生枝横断面各组织厚度及面积的测量值差异不显著。得出,用AutoCAD软件对苹果砧木1年生枝横断面各组织厚度和面积进行测量比用IPE软件更精确、便捷,功能强大,提出用AutoCAD软件测量苹果砧木枝条解剖结构各组织长度与面积是一种值得推荐的方法,可在其他植物组织解剖结构的显微测量中推广应用。     

COUPLING ANALYSIS METHOD FOR INTERACTION BETWEEN FOUNDATION WITH CAVERN AND FRAME STRUCTURE

In this paper,the interaction between foundation withcavern and frame structure is studied by the coupling methods of BEMand FEM.On the interface between the foundation and structure,thecoupling analysis needs to satisfy both the condition of displacementcompatibility and force equilibrum.A calculating program for two-dim-ensional problem is worked out in the computer,SIEMENS 7570C.Twoengineering examples are calculated and the results are compared withthose obtained by the comventional simplified method and with the observedresults from the engieering structures.It indicates that it is necessaryfor the weak rock foundation with shallow cavern,in the buried depth,to take the interaction into account.     

Simple Shear Test of Interface between Sand and Structure under High Stress

By using a simple shear apparatus that is developed from RMT-150B,a series of simple shear tests of interface between saturated sand and structure under high normal stress were carried out to study constitutive law and shearing stiffness of interface to provide some theoretical evidences for design and calculation of projects concerned with mechanical problem of interface.In test,sand was consolidated in upper shearing box firstly,then,shear was started and testing data was recorded under high and constant normal stress.During the process,sand can deform relatively freely.It is shown that the relation curve between shear stress and shear displacement under high normal stress in simple shear tests is different from that in direct shear tests,and the complete shearing deformation process of interface under high stress can be described as a nonlinear elastic-perfect plastic form;Weibull distribution with three parameters can overcome the mathematical deficiencies of hyperbola in NEPP.The new model which is established by substituting Weibull distribution for the hyperbola of NEPP better agrees with the testing data.The regressive results of the initial shearing stiffness demonstrate that the linear function is slightly better than power function to express the relation between the initial shearing stiffness and normal stress.Based on the new interface model,the formula of tangential shearing stiffness is proposed,meantime,the change trend of tangential shearing stiffness of the new model is compared with that of NEPP.     

Several Kinds of CommunicationStandards and IC Circuit Interface

The improvement of Data Communication has made the design of line driver,line receiver and other interface circuits complicated.In accordance with some communication protocols,this paper recommends several IC interface chips and their application in overcoming the influence of noise.     

Conceptual Design of Themed Restaurant in Colleges and Universities

Creative themed restaurants not only meet the needs of dining of people, but also provide consumers with a unique experience, which accounts for its popularity. This paper, based on the existing locomotive in University of Science and Technology Liao Ning, expounds the conceptual design scheme of "Next Station" campus train-themed restaurant from three aspects: theme design, menu and service design and space environment design.     

A MP3 Player Solution Based On Universal Microchip

This paper introduces a MP3 player solution based on universal microchip, Intel 8 bit microchip. It downloads music by USB interface and stores files into compact flash card. This paper specifies the usb interface technology between microchip and computer, interface design between microchip and compact flash card, and the control method of STA013 ,a mp3 decoding chip. The discrete audio signal is transformed into the continual audio signal by D/A transformer CS4334. Because of using a universal microchip, this system can also be embeded into other microcontrol system to achieve an apparatus with MP3 player.