可调式智能窗帘控制系统.本设计是采用stc89c52单片机对步进电机进行控制，光敏二极管在受到不同亮度和强度的光照射的时候，电阻的变化为单片机输入控制信号，单片机通过IO口输出的有时序的方波作为步进电机的控制信号，信号经过ULN2003A驱动步进电机；同时，也可以采用独立连接式非编码键盘对电机的状态进行控制，并用发光二极管显示单片机的工作状态，单片机输出控制信号，通过驱动芯片放大后，给步进电机提供时序脉冲，来控制步进电机的转向，从而实现对门帘的智能控制其收起或者放下的动作。-Adjustable intelligent curtain control system of this design is the use of the stc89c52 single-chip stepper motor control photodiode by different brightness and intensity of the light irradiation, the change in resistance of the MCU input control signal, microcontroller IO port output sometimes sequence square wave as a stepper motor control signal, the signal after the the ULN2003A drive stepper motor　simultaneously, can also be non-coded keyboard by independent connections to control the state of the motor, and a light emitting diode display the working status of the microcontroller, the microcontroller outputs a control signal to the stepper motor driver chip amplification provides timing pulses to control the stepper motor, steering, put away or put down the action in order to achieve the curtain intelligent control.