This paper presents the design and implementation of a LoRa-Enabled Disaster Management and Emergency Communication System. The system integrates an emergency trigger button, a GPS module for real-time location capture, and a LoRa transceiver (STM32 + ESP8266) for long range, low-power wireless communication. At the receiver side, a control station displays incoming alerts on an LCD and activates an alarm for rescue coordination. The system operates entirely without GSM networks or internet connectivity, making it robust for remote and disaster-affected areas. Prototype testing confirms reliable alert transmission, accurate GPS location tagging, and successful receiver-side notification. Abstract— This paper presents the design and implementation of a LoRa-Enabled Disaster Management and Emergency Communication System. The system integrates an emergency trigger button, a GPS module for real-time location capture, and a LoRa transceiver (STM32 + ESP8266) for long-range, low-power wireless communication. At the receiver side, a control station displays incoming alerts on an LCD and activates an alarm for rescue coordination. The system operates entirely without GSM networks or internet connectivity, making it robust for remote and disaster-affected areas. Prototype testing confirms reliable alert transmission, accurate GPS location tagging, and successful receiver-side notification.

The LoRa-Enabled Disaster Management and Emergency Communication System was successfully designed and partially validated at prototype level. The STM32 transmitter unit correctly detects emergency events, acquires GPS coordinates, and transmits alert packets via LoRa. The ESP8266 receiver station reliably decodes and displays incoming alerts while activating the alarm module. LoRa’s long-range, low-power characteristics make the system uniquely suited for villages, coastal zones, and mountainous regions where conventional infrastructure is unavailable or unreliable. GPS integration ensures that every alert carries actionable location data, directly improving rescue response time and overall public safety. Future work will incorporate a web dashboard for real-time alert visualisation, solar power harvesting for indefinite field operation, and multi-node LoRa mesh networking to extend system coverage across large disaster zones.

[1]P. Ramesh et al., “IoT Assisted Fisherman Aid to Detect Bordersand Alert System using Intelligent GPS Technology,” 2023. [2]G. M. Karthik et al., “An Improved GPS Assisted Fishermen Tracking System using Internet of Things with Smart Sensors Association,” 2024. [3]Adhithyan K., S. M. Jainth, B. Priya, “Fisherman Border DetectorUsing IoT and LoRa,” 2023. [4]Divya B. et al., “Border Detection for Fishermen Using IoT,”2024. Ajay Koppaka et al., “Navigating the Waves: IoT Border AlertSystem for Maritime Safety,” 2024.

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