基于单片机的LED调光控制器设计  

Design of LED dimming controller based on MCU

作　　者：祝建科[1] 

机构地区：[1]四川信息职业技术学院,四川广元628017

出　　处：《现代电子技术》2014年第21期127-129,134,共4页Modern Electronics Technique

摘　　要：以单片机为核心控制元件,设计一个电子调光控制器。该方案由单片机、数码管、按键开关等构成电子调光控制器,通过按键输入调光信号,经过单片机处理。该电路利用PWM脉宽控制电路来调节LED灯光亮度,具有10级调光功能,亮度变化呈阶梯变化,不会发生忽暗忽明现象,利用一个两位一体数码管来显示调光等级。此设计实用性强,判断精确,扩展功能强。An electronic dimming controller taking single-chip microcomputer as the core control component was designed.The electronic dimming controller is composed of a single chip computer,digital tube,button switch,etc. The dimming signal is input through the keyboard,and processed by SCM. PWM pulse width control circuit is adopted to regulate the LED brightness,which has the dimming function of 10 stages. Its brightness change appears in stepping state,unnecessary to worry about the flashing on and off phenomena. A two-in-one digital tube is employed to display the dimming level. This design has strong practicability,accurate judgment and strong function expansion.

关 键 词：电子调光控制器 数码管 按键开关 LED 

分 类 号：TN312.8[电子电信—物理电子学]