基于覆铜板的手写绘图板设计  

Design of Drawing Board for Simple Hand Input Based on Copper Clad Panel

作　　者：梁仲华 庄兆永 洪远泉[1] 

机构地区：[1]韶关学院物理与机电工程学院,广东韶关512005

出　　处：《韶关学院学报》2015年第10期41-44,共4页Journal of Shaoguan University

基　　金：广东省教育厅科技创新项目(2013KJCX0169);韶关学院2014年国家级大学生创新训练项目(201410576012)

摘　　要：系统以MSP430单片机为控制核心,包含有手写输入电路、输入检测放大电路、绘图铜板和液晶显示等接口的电路.绘图笔尖在铜板上滑动,笔尖点与覆铜板的四个顶点之间的阻值会发生变化,产生相应微小变化电压,对此微小信号检测、放大、变换等处理,最后显示相应图形的形状、坐标、位置等相关信息.经测试,系统能较好地实现手写绘图功能.The system is basically controlled by the MCU （Micro Controller Unit） named MSP430. The interface mainly contains circuits of handwriting input, input detecting amplifying circuits, drawing copper, LCD circuits and so on. When moving the multi-meter probes, there is an extremely slight change in resistance from that point to the four vertexes by testing the surface resistance of the copper clad laminate, and there is tiny corre-sponding voltage. Then the graphic shape, coordinate and the location can be shown on the display screen by testing, amplification, converting and programmatically manipulating of the tiny signal. The system can success-fully conduct the drawing functions after testing.

关 键 词：单片机 手写输入 覆铜板 位置 坐标 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]