基于嵌入式计算机的电脑绣花机控制器设计

【作者】 向兵；

【导师】 孙瑜；

【作者基本信息】 南京理工大学 ， 检测技术与自动化装置， 2009， 硕士

【摘要】 随着纺织行业的快速发展,刺绣品需求量急剧增加,从而高性能的电脑绣花机越来越受到人们的青睐。我国是纺织大国,而电脑绣花机控制系统发展相对而言比较落后,因此,研究高性能电脑绣花机控制器具有非常重要的意义。本文以嵌入式计算机为核心,结合EDA技术设计电脑绣花机控制器,主要研究工作如下:(1)对电脑绣花机工作原理和功能进行分析的基础上,提出了以“嵌入式计算机+PC/104总线控制卡+嵌入式Linux”为软硬件平台的电脑绣花机控制器方案。(2)选用深圳科思公司带有PC/104模块的嵌入式计算机CS-2215,以可编程逻辑器件EPM7160STC100为核心设计PC/104总线控制卡,利用VHDL实现了PC/104总线控制卡中各个模块的功能,并设计了这些模块与外设之间的接口电路。(3)采用嵌入式Linux操作系统设计控制器的软件。详细介绍了DSB格式花样文件的存储格式、花样数据的获取与解析;对主轴伺服电机和绣框步进电机的协调运动进行了详细地分析和设计;并实现了自动换色、剪线、断线检测、绣框越限处理等功能。(4)利用QuartusⅡ仿真验证了PC/104总线控制卡的各个模块的功能,并把设计的PC/104总线控制卡与嵌入式计算机连接起来,接入到绣花机系统中,联机调试控制器的功能。本文设计的控制器实现了对绣花机的控制。通过现场测试,该控制器能够控制绣花机的刺绣、自动换色、剪线和一些故障处理(如断线检测、绣框越限等),符合设计要求。更多还原

【Abstract】 With the rapid development of textile industry, demand for textile has increased dramatically. As the result, the computerized embroidery with high-performance is becoming more concerned. The technology of the computerized embroider machine control system is not advanced enough to meet the strong domestic require of textile, therefore, developing on high-performance computerized embroidery machine controller has very important significance. This paper focuses on the design of the computerized embroidery machine’s controller based on embedded computer and EDA technology, the main research works are listed as follows:(1) Based on the analysis of the basic working principle of the computerized embroidery machines, this paper proposed a design of computerized embroidery machine controller, taking embedded computer, PC/104 bus control card, embedded Linux as the software and hardware platform, combined with the requirement of computerized embroidery machine.(2) According to the selection of embedded computer with PC/104 module of Shenzhen CONSYS, this paper designed the PC/104 bus control card based on EPM7160STC100 and realized every function module of PC/104 bus control card using VHDL, and designed the interface circuit between these modules and peripherals.(3) The software of the controller is designed based on the embedded Linux operation system. The storage format and acquirement method of the DSB embroidery data file are detailedly discussed in this paper. The coordinate motion between the principal axis servo motor and the stepping motor is detailedly analyzed and designed. Functions such as automatically color-changing, shear thread, detection of thread breaking are also realized.(4) Every module of PC/104 bus control card has been simulated and testified through the software Quartus II. PC/104 bus control card is connected with the embedded computer, and every function of the controller is debugged finally.In this paper, a perfect control of the embroidery can be achieved by the controller. It can embroider, automatically change color, shear thread, and process some errors such as thread breakage, tabouret overstep the boundary. The functions of the controller can be achieved to meet the requirements.更多还原