摘要
设计以STC89C58单片机为核心的最小系统。采用L297与L298控制、驱动步进电机;音频放大器采用CX20106芯片,信号频率选择、放大性能好;同时具有433MHz无线接收发模块等。音频接收器接收小车发出的15kHz音频信号,通过采集、放大、滤波等环节传送至接收端单片机;利用时间差作为变量,将对应的信息无线发送回小车处理器,控制小车移动到达预定位置。
A minimum system is designed with STC89C58 as core chip.L297 and L298 are responsible to control and drive the stepper motor.The audio amplifier uses CX20106,shows good frequency selection and amplification performance,and has a 433 MHz wireless receiver.The audio receiver receives 15 kHz audio signal transmitted from a car and sends the signal to the receiver microcontroller by signal collection,amplification,filtering,etc.Using the time difference as a variable,the information is sent back to the car processors wirelessly,and controls the car to reach its intended location.
出处
《单片机与嵌入式系统应用》
2010年第8期54-56,60,共4页
Microcontrollers & Embedded Systems
