Automated Street Lighting Using a PIR Sensor, Arduino, and LDR
Keywords:
Arduino, Automated street lighting, Energy efficiency, LDR, PIR sensor, Smart lightingAbstract
Street lighting is essential for maintaining road safety and security at night; however, traditional systems often rely on manual or timed controls, which can result in excessive energy consumption and increased maintenance challenges. This project aims to tackle the issue of unnecessary energy use resulting from streetlights being illuminated during daylight or in areas with no activity. To address these shortcomings, an automated street lighting system was created using Light Dependent Resistors (LDRs) and Passive Infrared (PIR) sensors, all connected to an Arduino microcontroller. The LDR measures the intensity of ambient light to differentiate between day and night, while the PIR sensor detects the presence of people or vehicles. The microcontroller analyzes the inputs from these sensors to automatically turn the streetlights on or off, depending on the ambient light conditions and detected motion. The implemented system effectively reduces energy consumption by ensuring lights operate only when required. Experimental results demonstrated that the system successfully optimized power usage, minimized manual intervention, and provided reliable illumination when necessary. Overall, the project achieved a cost-effective, sustainable, and intelligent lighting solution suitable for modern smart city applications.
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