基于互联网的经编针织物CAD系统开发与实现

Development and realization of knitting fabric CAD system based on Internet

为打破单机版经编CAD软件的使用局限性,实现快速设计、快速仿真、虚拟展示、工艺计算、数据实时交互等功能,开发了一款基于互联网的经编针织物CAD系统。根据经编组织的编织规律和垫纱数码,建立垫纱图绘制及穿纱绘制的三维矩阵模型和数学模型;利用计算机图形学技术实现对仿真图的花型提取及循环处理,利用数据库技术实现送经量的估算等功能;最后利用VS开发环境将其转换成计算机语言。根据互联网技术原理,构建浏览器/服务器(B/S)结构完成交互设计,利用云服务平台实现大数据的存储与调用。最后利用发布后的系统进行简单经编方格织物的工艺设计,验证基于互联网的CAD系统的实用性和稳定性。

An Internet-based CAD system for warp knitted fabrics was developed to break the limits of standalone-version warp knitting CAD software and to realize functions of rapid design,simulation,virtual display techniques calculation and real-time data interaction.According to the knitting principle of warp-knitted structures and the basic chain notation,a mathematic model with three-dimensional matrixes for representing the lapping and threading diagram was established.The computer graphics technology was applied to realize the pattern extraction and circulation processing of the simulation diagram,and the database technology was applied to realize the estimation of the amount of let off,etc,which was then converted into the computer language in Visual Studio development environment.A B/S structure was used to complete the interactive design according to the Internet technology principles.The storage and calling of large data were efficiently solved by using the cloud service platform.This developed Internet-based CAD system using the post-release system was finally proved with practicality and stability by designing a simple warp knitted grid fabric.