The automatic solar street light control system includes a solar power supply part, microcontroller part, and output part. The solar power supply part is mainly composed of solar panel, solar cell controller and battery, which converts solar energy into electric energy and stores it in the battery. The microcontroller is composed of a clock chip, photosensitive sensor, infrared sensor, single-chip computer, key, and display part. During the day, the output signal of a single-chip microcomputer mainly depends on the photosensitive sensor. When the light intensity is lower than the set value, the street lamp will be on, and the brightness will change with the change of light intensity. From 11:00 P.M. to 5:00 A.M., the street light is off under the control of the single-chip microcomputer. When a pedestrian passes by, the street light is on for 30 seconds and then off. The key part can modify the clock time, and the display part is used to display the time and light intensity. The output part is realized by a two-stage operational amplifier with triode and MOS, which amplifies the current and voltage signals of the PWM wave. Moreover, the output can be switched from solar power supply to municipal power supply. So far, the design of the automatic solar street lamp controller has been completed.

At present, the production technology of high-power LED lamps has been more mature, and the production industry has a certain scale. LED street lamps have been popularized in Shanghai, Shenzhen and other cities in China. In the next 50 to 100 years, the traditional energy will tend to be exhausted. With its inexhaustible advantages, solar energy will play an important role in the future energy application. The LED street lamp lighting facilities powered by solar energy will be popularized and play an important role in the near future.