Papers by Author: Xiao Lin Lu

Abstract: Streamline visualization is very important for the fluid dynamics and manufacture design. The visualization method constructed by the stream function and fluid flow model can not interactively change the visualization shapes upon the request to amend the surface. This paper presents a new visualization method with Bézier control mesh to achieve the streamline fluid flow visualization. The stream function is in accordance with the principles of fluid motion by using Bézier surfaces to find the constraint condition. The constructed surfaces can be interactively modified accurately to reflect the local details of the flow field to meet the engineering requirements. The streamline visualization can be modified and controlled interactively by a set of control parameters like the Bézier surface. It has an important practical value for fluid flow design and manufacturing.

Abstract: The Data Acquisition Systems (DAS) are the basis for building monitoring tools that enable the supervision of local and remote systems. A variety of communications and data transmission system has been adopted DAS to exchange information. The special-purpose DAS has a very important practical value. This paper presents the circuit and system design for a new micro type of remote data acquisition system. It consists of an integrated circuit, a phone dialer, modulation devices, central processing unit, buttons, input devices and display devices. The system and circuit design has been described in detail. It can be used to transmit data through the public switched telephone network. It is suitable for constructing a mini scale communication network at low cost for data acquisition through the PSTN.

Abstract: In surface modeling, it is important to reconstruct the smooth connecting surface for the polyhedron vertex and edge rendering. The general method by using the spherical and cylindrical surfaces do not possess the geometric continuity. This paper proposed a geometric modeling method of reconstruction vertices and edges with smooth surface for the polyhedron corner rendering with high order geometric continuity. The proposed method is based on the principle of the theory of geometry continuity through a geometry drawing algorithm. The reconstructed surface can be connected neighboring surfaces with G1 geometry continuity. The results show that the reconstructed surfaces can polish and render the polyhedron corner with good geometry continuity property.