"基于单片机的教室智能灯光控制系统设计与实现"

This paper details the design of a classroom lighting control system based on a microcontroller. After extensive research on the usage characteristics and lighting needs of university classrooms, as well as the problems that exist, the paper proposes a solution using a microcontroller. The system utilizes the AT89S51 microcontroller as its core component, and employs a passive infrared sensor to detect the presence of people, as well as a light-sensitive circuit to detect the intensity of the ambient light. By analyzing the signals from these sensors, the system can intelligently control the classroom lighting, thereby reducing energy waste and achieving energy conservation goals. In addition, the system is equipped with an alarm function and anti-interference measures such as hardware and software "watchdogs". With these features, the system can meet the lighting control requirements of various educational institutions and significantly contribute to energy saving efforts. Keywords: microcontroller; intelligent control; passive infrared sensor; X5045