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来源：百度知道 编辑：UC知道 时间：2024/06/17 03:28:35
摘要：AT89C52单片机是一款高性能的8位单片机，它的功能强大，易于拓展，适用于许多复杂的控制应用场合。本设计以单片机AT89C52作为控制核心，以3行4列矩阵键盘为输入，键盘向单片机输入相应控制指令来驱动电机，实现电机启动、正转、反转、停止和转速的控制。使用霍尔传感器测量电机的转速，而电机的运转状态则通过数码管显示出来，因此完成了基本要求和发挥部分的要求。
本设计中，电机的驱动电路采用了L298N驱动集成电路，因为它提供带有光耦隔离的驱动模块，利用这个模块可以把单片机电源与直流电机电源隔离开，从而可以避免直流电机对单片机的干扰。
关键词：单片机、电机驱动、调速、LED显示、霍尔传感器

AT89C52 is a high-performance single-chip 8-bit single-chip, and its powerful, easy to expand, applicable to many complex control applications. The AT89C52 single-chip design as a control core and the 3 line 4 matrix keyboard for input, keyboard input corresponding to the single-chip control commands to drive the motor, electric start implementation is transferred, reverse, stop and speed control. Using Hall sensor measuring motor speed, and motor functioning status through digital tube display, so the completion of the basic requirements and the requirements to play a part.
This design, the motor drive circuit used L298N driver integrated circuits, as it provides an optocoupler isolated driver modules, this module can be put to use single-chip power supply with power isolated DC motor, which can be avoided on a single DC motor machine interference.
Key words: microcontroller, motor drive, speed control, LED display, Hall sensor

Abstract: AT89C52 single chip comput