DESIGN OF AN INTELLIGENT SOLAR-LED STREET LIGHT WITH DYNAMIC BRIGHTNESS REGULATION

Abstract

Rapid urbanization and the global push toward sustainable development have increased the demand for energy-efficient and environmentally friendly street lighting solutions. Conventional street lighting systems consume significant amounts of electricity and lack adaptability to varying environmental conditions, leading to energy wastage. This paper presents the design of an intelligent solarpowered LED street lighting system with dynamic brightness regulation, aimed at improving energy efficiency, sustainability, and operational reliability. The system integrates photovoltaic panels for renewable energy harvesting, energy storage units for continuous operation, and high-efficiency LED luminaires for illumination. A microcontroller-based control mechanism dynamically regulates brightness levels according to environmental inputs such as ambient light intensity and pedestrian/vehicle movement detected by sensors. The adaptive brightness feature ensures adequate illumination only when necessary, thereby extending battery life and reducing overall energy consumption. Additionally, the system supports remote monitoring and control through IoT integration, enhancing scalability for smart city applications. Simulation and prototype testing validate that the proposed intelligent street lighting system achieves significant energy savings, improved illumination management, and enhanced sustainability compared to conventional fixedbrightness systems.