NexusGuard AI System: An AI and IoT-Enabled Integrated Smart Infrastructure for Campus Safety and Sustainability

NexusGuard AI presents an integrated approach to campus safety and sustainability by combining artificial intelligence, Internet of Things technologies, embedded controllers, environmental sensors, camera-based surveillance, smart lighting, emergency response, cloud monitoring, and renewable power into a unified smart-pole architecture. The ESP32 functions as the main sensor and control controller, while the Raspberry Pi 4 performs AI-based camera processing. A collection of sensors provides information about movement, smoke, gases, flame, temperature, humidity, sound, and ambient light, while the actuator section enables local warning and control through LEDs, siren or buzzer, speaker, OLED display, and relay devices. Wi-Fi and MQTT provide network communication, Firebase provides real-time cloud management, and the dashboard or mobile application allows remote monitoring. Solar power, battery storage, and DC-DC conversion support autonomous operation. Overall, the proposed architecture aims to overcome the limitations of fragmented campus systems by providing a centralized, intelligent, scalable, and energy-conscious infrastructure for safety and sustainability.

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