• AVINAV PRASAD
• AKASH A S
• BHARATH KUMAR K
• CHIRANTH C
• SUMA SANTOSH

Real-time monitoring for unauthorized physical intrusion is a critical security challenge, particularly in restricted or remote areas where conventional systems can be complex and costly. This paper presents the design and implementation of a low-cost, real-time ground intrusion detection system. The primary objective is to develop a prototype capable of sensing ground vibrations and instantly notifying a user both locally and remotely. The system architecture is centered on an Arduino UNO microcontroller, utilizing an SW-420 vibration sensor for disturbance input, a passive buzzer for the local audible alert, an HC-05 Bluetooth module for remote wireless notification to a paired mobile device and an ESP32 cam for live monitoring. The software employs edge-detection logic to process the sensor's digital output, ensuring that a single, precise alert is generated per intrusion event rather than continuous, redundant triggers. The resulting prototype successfully identifies vibration events that exceed a user-calibrated sensitivity threshold, concurrently sounding the alarm and transmitting an alert string to a smartphone. This work demonstrates a viable and highly accessible solution for small-scale security, providing an effective, dual-alert mechanism suitable for asset protection or temporary perimeter monitoring.

Arduino uno, Intrusion detection, Vibration sensor, Sw-420, Real Time Monitoring, Wireless Alert, Security system, Microcontroller

"UNMANNED GROUND INTRUSION DETECTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 11, page no.f567-f573, November-2025, Available :http://www.jetir.org/papers/JETIR2511587.pdf

"UNMANNED GROUND INTRUSION DETECTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 11, page no. ppf567-f573, November-2025, Available at : http://www.jetir.org/papers/JETIR2511587.pdf