CAJ | 학술논문

系统以ATmega128单片机为控制核心，设计电路并实现手写绘图板功能。包括控制电路、电压采集电路、放大电路、稳压源电路、显示电路等。当表笔接触镀铜板表面时，电压采集电路、放大电路能够采集到单片机能够识别的电压信号，通过单片机算法能够算出表笔点触镀铜板位置的坐标，并能够在显示电路中显示坐标，从而实现手写绘图板功能。
계통이ATmega128단편궤위공제핵심，설계전로병실현수사회도판공능。포괄공제전로、전압채집전로、방대전로、은압원전로、현시전로등。당표필접촉도동판표면시，전압채집전로、방대전로능구채집도단편궤능구식별적전압신호，통과단편궤산법능구산출표필점촉도동판위치적좌표，병능구재현시전로중현시좌표，종이실현수사회도판공능。
This system takes the mega128 singIe chip as the controI core,circuit design and reaIize handwritten drawing board function.It incIudes a controI circuit,a voItage sampIing circuit,ampIifying circuit,power source circuit,dispIay circuit etc..When the pen contact pIating copper surface,voItage acquisition circuit,ampIifying circuit,can coI ect the voItage signaI microcon-troI er can identify,through the microcontroI er aIgorithm can coordinate caIcuIated pen point contact pIating copper position, and be abIe to coordinate dispIay circuit dispIays,so as to reaIize the handwriting drawing board function.