本文以AT89S52单片机为核心，设计了全自动洗衣机控制系统。本系统实现了对洗衣机整个洗衣过程的控制，包括用户参数输入、洗衣、脱水和结束演奏四个阶段。控制系统主要由电源电路、数字控制电路和机械控制电路三大模块构成。电源电路为数字控制电路提供稳定的5V直流电压，为电动机提供220V市电；数字控制电路负责控制洗衣机的工作过程，主要由AT89S52单片机、两位共阴数码管、按键、蜂鸣器、LED指示灯组成；机械控制电路实现水位检测、电机驱动、进水、排水等功能，主要由水位检测器、电动机、传动系统部件、进水排水电磁阀组成。-In this paper, AT89S52 microcontroller core, design a fully automatic washing machine control system. The system of washing machines to achieve the control of the entire laundry process, including user parameter input, laundry, dehydration and the end of playing four stages. Control system mainly consists of power circuit, digital control circuit and mechanical control circuit constituted the three major modules. Power supply circuit for the digital control circuit to provide a stable 5V DC voltage for the motor to provide 220V electricity　digital control circuitry responsible for controlling the washing machine s working process, mainly by the AT89S52 microcontroller, two were overcast digital control, button, buzzer, LED instruction Light composition　mechanical control circuit water level detection, motor, water, drainage and other functions, mainly by the water level detectors, motors, transmission parts, water drain solenoid valve component.