嵌入式高速工业气动打印机的研制

发布时间：2018-03-06 10:48

本文选题：工业气动打印机　切入点：嵌入式系统　出处：《重庆大学》2012年硕士论文　论文类型：学位论文

【摘要】：工业气动打印机主要应用于汽车、机械、轻工等领域，可以对钢铁、木料等各种原材料制成的铭牌、零件等产品进行标记打印，是工业企业对产品进行标记、高效管理和分类的辅助工具。根据其系统结构和控制方式的不同，可以分为计算机控制、单片机控制和上下位机混合控制三种类型。针对目前进口气动打印机功能较完整，但是价格昂贵，而国内的气动打印机又存在打印速度低、体积庞大、精度较低等缺陷，本文提出了一种体积小、打印速度快、低成本、打印精度高、操作方便的嵌入式高速工业气动打印机。通过对嵌入式高速工业气动打印机的需求分析和各方案对比，同时为了保证打印精度和速度，系统采用上下位机混合结构与闭环控制方式。上位机采用目前广泛使用的32位高性能低功耗嵌入式RISC（Reduced Instruction Set Computer）处理器S3C2440，用于取代传统气动打印机中的通用计算机或单片机作为主控制器，下位机采用16位超低功耗微控制器MSP430作为打印驱动控制器。系统支持多种扩展接口以保证其通用性和可扩展性，并创新性的引入网络接口。上位机采用嵌入式Linux操作系统，并且基于Qt/E（Qt/Embedded）构建了自己的轻型GUI库，提供了高质量软件的同时保证了良好的用户体验。它主要完成人机交互、数据管理、轮廓提取、通信等功能。系统配备64MB内存保证了系统的高效运行；对TTF字体和PLT文件的支持丰富了打印内容，，满足了更多客户的需求；采用YAFFS2文件系统，提供了最低128MB的本地数据存储；系统还支持网络共享和远程控制，首次实现了打印机的网络化；人机交互采用LCD与触摸屏的设计，使得操作更加直观方便。由于下位机采用16位微控制器MSP430，系统增强了下位机的功能，并首次将部分打印算法下放以提高打印精度和速度。下位机主要完成通信、直线插补运算、打印驱动控制、信息反馈等功能。经过一年多的研制，实现了系统的全部功能。较长时间的运行调试和实际测试表明系统操作方便，速度快且打印精准，而且打印内容清晰、规范、美观，满足了当前市场对嵌入式高速工业打印机的系统需求，达到了市场领先水平，具有很好的市场竞争力。
[Abstract]:Industrial pneumatic printers are mainly used in automobile, machinery, light industry and other fields. They can mark and print the nameplates, parts and other products made of various raw materials, such as steel, wood, etc. Assistant tools for efficient management and classification. According to the different system structure and control mode, they can be divided into three types: computer control, single chip computer control and mixed control of upper and lower computers. But the price is expensive, and the domestic pneumatic printer has some defects, such as low printing speed, large volume, low precision and so on. In this paper, a kind of small volume, fast printing speed, low cost, high printing precision and so on is put forward. Easy to operate embedded high-speed industrial pneumatic printer. By analyzing the requirement of embedded high-speed industrial pneumatic printer and comparing various schemes, at the same time, in order to ensure the accuracy and speed of printing, The system adopts the hybrid structure of upper and lower computer and closed loop control mode. The upper computer adopts 32 bits high performance low power embedded RISC(Reduced Instruction Set computer processor S3C2440, which is widely used at present, to replace the common computer in traditional pneumatic printer. Single chip microcomputer as the main controller, A 16-bit ultra-low power microcontroller (MSP430) is used as the print drive controller. The system supports a variety of extended interfaces to ensure its generality and extensibility, and the network interface is introduced innovatively. The host computer adopts embedded Linux operating system, and builds its own lightweight GUI library based on QT / E / Q / embedded. It provides high quality software and ensures good user experience. It mainly completes man-machine interaction, data management, contour extraction, etc. The system is equipped with 64MB memory to ensure the efficient operation of the system, the support for TTF fonts and PLT files enriches the printing content and meets the needs of more customers, and the YAFFS2 file system provides a minimum 128MB local data storage. The system also supports network sharing and remote control, and realizes the network of printer for the first time. The design of human-computer interaction is based on LCD and touch screen. It makes the operation more intuitionistic and convenient. Because the lower computer adopts 16-bit microcontroller MSP430, the system enhances the function of the lower computer, and for the first time, the partial printing algorithm is lowered to improve the printing accuracy and speed. The lower computer mainly completes the communication and the linear interpolation operation. Print drive control, information feedback and other functions. After more than a year of development, the whole function of the system has been realized. The running and debugging for a long time and the actual test show that the system is easy to operate, fast and accurate, and the print content is clear, standard and beautiful. It meets the current market demand for embedded high speed industrial printers and reaches the market leading level and has a good market competitiveness.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP334.8

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