1、太阳能 LED 路灯照明节能控制系统控制器设计 摘要 随着太阳能照明技术的发展，近几年太阳能路灯行业发展迅速，规模不断扩大 ，并且随着新型节能 LED 灯具的出现，太阳能 LED 路灯以其节能性好的优势得到了广泛的推广。 本文介绍了 脉冲宽度调制 技术 PWM 控制 LED 暗亮 的 原理 ，设计了一种基于 MSP430F149 单片机的太阳能 LED 路灯照明节能控制系统的控制器。整个控制器包括硬件电路的设计和软件电路的设计，硬件部分给出了 控制器硬件电路原理图 ，设计了 LED 恒流驱动电路、单片机控制电路、传感检测电路 和键盘显示电路。软件部分给出了 亮度自适应节能控制算法 流程图 和
2、C 语言源程序 ，该 算法可根据时段、环境亮度和人员活动情况改变 PWM 信号的占空比，自动调节 LED 的亮度，充分利用LED 的可控性，实现最佳照度控制，达到节能目的。 关键词 ： LED 恒流驱动； MSP430 单片机； LED 照明； PWM 控制；亮度自适应节能控制。 太阳能 LED 路灯照明节能控制系统控制器设计 Abstract With the development of solar lighting technology, in recent years the solar street lamp industry is developing rapidly, conti
3、nues to expand the scale, and with the new energy-saving LED lamp, solar LED street lamps have been widely promoted for its good energy saving advantage. This paper introduces the principle of pulse width modulation technology of PWM control LED dark bright, design a controller of MSP430F149 solar L
4、ED street lighting energy-saving control system based on. The controller includes hardware circuit design and software design of the hardware circuit, gives the hardware circuit principle diagram design of the controller, LED constant current drive circuit, control circuit, sensor detection circuit
5、and the keyboard and display circuit. The software part of the adaptive brightness control algorithm flow chart and the C language source code, the algorithm according to the time, the brightness of the environment and personnel activities change the duty ratio of PWM signal, automatic adjustment of brightness of LED, make full use of the controllability of the LED, to achieve the best illumination control, to achieve the purpose of energy saving. Keywords: LED constant current drive； MSP430 microcontroller； LED lighting； PWM control； adaptive energy-saving control brightness.
