无线遥控小车
摘要 为了达到设计的要求，我们使用了 MSP430F149 为车上主控制芯片，STC12C5A 为遥控控制芯片。
无线传输使用了 315M 无线传输模块，该模块采用了 PT2262/PT2272 进行编解码，拥有 6 位数据端管脚；遥
控采用了摇杆电位器，将电位器滑动端的电压与参考电压比较，得到摇杆的位置，通过单片机编码，传输
给小车上的单片机，小车上的单片机通过解码来控制小车的行驶及各种动作；电机驱动使用了 L298N，通过
单片机输出的 PWM 波来控制小车行驶的速度、小车行驶的方向；小车系统使用 12V 可充电锂电池进行供电，
遥控使用 9V 的碳性电池进行供电，传输距离可达５０ｍ，抗干扰能力强，系统可靠稳定。
关键词 无线遥控小车 315MHz 电波 PWM 波 L298N
Abstract In order to meet the design requirements for the vehicle we use the main control chip
MSP430F149, STC12C5A for the remote controller. 315M wireless transmission using the wireless
transmission module, the module uses PT2262/PT2272 for encoding and decoding, with 6-bit data-side
pin; remote control using a joystick potentiometer, the potentiometer wiper voltage is compared with
the reference voltage to obtain rocker position, through the microcontroller code, transmitted to the
microcontroller small car, small car microcontroller to control the car by driving decoding and a variety of
actions; motor drive using the L298N, the output of the PWM wave through the microcontroller to
control the speed of car travel, car driving directions; car systems supply power to 12V rechargeable
lithium battery, remote control with 9V battery powered carbon of the transmission distance up to 50m,
anti-interference ability, reliable system stability.
Keywords small wireless control car 315MHz Electromagnetic waves PWM waves L298N
