太阳能LED路灯系统的设计

A Design of Solar LED Street Lamp Lighting System

针对传统路灯光效低、耗电量大的问题,设计了一种小功率太阳能LED路灯系统.对本地区的年总辐射量与功率为5 W的LED负载光源工作的状态进行分析.选择45 W太阳能电池板和12 Ah铅酸蓄电池,以AT89S52单片机核心,采用DS12887时钟芯片和HC-SR501人体红外等模块,对LED光源进行时间、红外控制.路灯在晚上自动点亮,无人时以2/3功率照明,有人时以全功率照明;早上自动熄灭.对设计的太阳能LED路灯系统进行实验测试,结果表明:该系统功耗较低,以全功率工作时,电压13.6 V,电流0.375 A,功率5.1 W;以2/3功率工作时,电压13.5 V,电流0.270 A,功率3.6 W,并在连续3个阴雨天的情形下也可正常工作.该路灯可广泛适用于居民小区和工厂等环境.

A miniwatt solar LED street lamp lighting system was designed to solve the problems of low efficiency and great power consumption for traditional street lamp. 45 W solar panels and 12 Ah lead-acid batteries were selected to analyze the region of annual radiation amount and the working status of 5 W LED load light source. LED light source was controlled by time and infrared though DS12887 clock chip, HC-SR501 human infrared sensor module and AT89S52 single chip microcomputer. It light up automatically in the evening. In case that no one comes nearly, it comsumes two-thirds power for lighting. When people come nearly, it lights up fully. It goes out automatically in the morning. The test results showed that it has low power consumption. When working at full power, namely 5.1 W, it requires 13.6 V and 0.375 A current;when working at two-thirds power, namely 3.6 W, it requires 13.5 V, and 0.270 A current. It can function for three consecutive rainy day. The street lamp is suitable for community and factory environment.