基于单片机的智能教室照明系统的设计

该文介绍如何设计一种基于单片机的智能教室照明系统,采用STC89C52单片机作为主控芯片,使用热敏电阻和热释电传感器分别实现教室内的光照度以及人体存在信息的采集;使用光驱动芯片PT4115结合基于PWM的调光方法,通过改变输入波形的脉冲宽度即可调整LED光源的亮度。还可通过单片机设定自动和手动两种模式,以便适应复杂的高校教室用灯环境,实现教室照明系统的智能化和人性化,达到节能环保的目的。

This work designed a set of intelligent classroom lighting system based on MCU. Use STC89C52 as main control chip. Use the thermistor and pyroelectric sensor obtained the light of the classroom and the existence of human body information. Use light chip PT4115 and dimming method based on PWM. By changing the pulse width of input waveform to adjust the brightness of the light source. Also can control MCU to set manual and automatic mode. In order to adapt to the complex light environment of col. lege classroom. To realize the intelligent and humanization classroom lighting system .This system has the power to save energy and protect the environment.