遥控电动小车装置的设计制作.doc

2012年山东省大学生电子竞赛 遥控电动小车装置的设计制作（G题） 高职高专组 2012年 9月17日 摘要 本遥控小车装置是采用凌阳61单片机作为主控制器，利用nRF2401无线通信模块实现实时通信，以满足使用遥控器实时控制小车的目的（通过无线遥控器的控制实现小车的前进、转向、倒退等动作）。 遥控器键盘采用4×4键盘设计；小车电机驱动采用L298电机驱动芯片；遥控器显示屏应用LCD12864液晶显示模块。单片机输出两路PWM波控制L298N驱动小车行走。通过无线遥控控制小车行走不同轨迹，使小车找到目的地。由于要实时显示小车的具体、准确的位置，所以我们通过测量小车走过的路程，进而确定小车的坐标，并以小于0.5秒的速度刷新坐标。 整个控制系统电路结构严谨，实用性强，可靠性高，稳定性好。经测试本系统的实验测试结果满足题目各项要求，实现了智能小车的设计与制作。 关键词：SPCE061A单片机 L298驱动 无线遥控技术 Abstract The remote control electric car device is to use two pieces of sunplus 61 single chip microcomputer as the main controller, using nRF2401 wireless communication module to realize real-time communication, in order to meet the real-time control using a remote control car purpose (complete use of wireless remote control to realize the car forward, steering, back). The remote control keyboard using 4 x 4 keyboard design; Car motor drive the L298 motor driver chip; The remote control application display LCD12864 liquid crystal display module; The car speed by single-chip microcomputer output two way PWM wave to control drive L298N finished, because the application of high performance L298N chip motor drive, makes the motor speed stability; The motor to control dc motor, through the wireless remote control car walk different track route, make the car find arrive at the destination route recently. Due to display the car of the specific, accurate position, so we used photoelectric pipe measuring car passes through the journey to display the car of the actual coordinates, and meet the refresh rate is less than 0.5 seconds. The whole control system circuit structure is rigorous, practical strong, high reliability, good stability. According to the test, the system of the experiment test results meet the requirements subject and realize the intelligent car design and production. Keywords: SPCE061A L298 drive wireless remote control technology 一 系统整体方案 3 二 方案论证与比较 4 1单片机的选择 4 2电机驱动的选择 5 3通信模块的选择 5 4坐标定位方法的选择 5 5按键控制的选择 6 6显示模块的选择 6 三 单片机供电、电机供电供电模块 6 四