遥控绘图小车.doc

遥控绘图小车（C题） 目 录 摘 要 ……………………………………………………………………2 Abstract……………………………………………………………………2 一、系统方案………………………………………………………………2 1、总体实现方法…………………………………………………………2 2、系统设计………………………………………………………………2 3、结构框图………………………………………………………………2 3.1 A控制单元框图………………………………………………………3 3.2 B小车单元系统框图…………………………………………………3 4、方案实现及其电路图…………………………………………………2 4.1 A，B主控单元模块 …………………………………………………2 4.2 电机模块 ……………………………………………………………3 4.3 A 单元显示模块 ……………………………………………………3 4.4 小车电源模块 ………………………………………………………3 4.5 无线发送接收模块 …………………………………………………3 4.6 位置传感器模块 ……………………………………………………4 二、控制方法和理论计算…………………………………………………4 1、超声波测距……………………………………………………………4 2、画圆……………………………………………………………………4 3、画正方形………………………………………………………………4 4、画三角形………………………………………………………………5 5、写汉字“五”…………………………………………………………5 三、电路与程序设计………………………………………………………5 1、总体电路图……………………………………………………………5 2、软件和控制流程图……………………………………………………6 2.1 A控制单元流程图……………………………………………………6 2.2 B小车单元流程图……………………………………………………6 四、系统测试………………………………………………………………6 1、测试工具………………………………………………………………6 2、测试方法和测试结果…………………………………………………7 2.1 画固定半径圆测量 …………………………………………………7 2.2 画固定边长正方形测量 ……………………………………………7 2.3 画三角形测量 ………………………………………………………7 2.4 写汉字“五”的测量 ………………………………………………7 五、结果分析………………………………………………………………7 1、创新发挥………………………………………………………………7 2、测试结果分析…………………………………………………………7 摘 要 Abstract In order to meet the demand of the title, we use the STC89C52 as the MPU of the A and B unit. Unit A we use 12864LCD to show the figures and Chinese character. A wireless sending module is used to send signals to communicate with unit B. Unit B runs on the basis of the signals received though the wireless receiving module on itself. We build a battle with the height of 20cm in order to use the ultrasonic wave sensor to judge the position of the car. MAIN CHARACTERISTIC : The 12864LCD use the serial-communication-means. We build a battle around the coordinate in order to use the ultrasonic wave sensor to judg