Emergency Notification System with LoRa Technology for Elevator Case Study: Prince of Songkla University, Phuket Campus

Main Article Content

Jirawat Thaenthong
Sara Laeman
Worarutai Duangdee

Abstract

Nowadays, when the elevator stuck at nighttime. Getting help is difficult because there may not be anyone who hears the signal. Also, some elevators with thick walls will block mobile signals. In this paper, we developed an emergency notification system with LoRa technology for the elevator. The proposed system uses the ESP32 microcontroller built-in LoRa module for long-distance communications. It has two versions. Version 1 used the Point-to-Point technique with one sender and receiver unit, and version 2 includes the relay unit to extend signal coverage distance. The testing results showed device version 1 can send an emergency signal with limited range, the signal transmission between the transmitter and receiver in building 5 is 40 meters, and building 6 is 20 meters. Version 2, with only one relay module, provides the distance at building 5 and building 6 better than version 1, about 12.5% and 50% of the length, respectively. The device version 2 improves the range of communication-based on the number of relay units.

Article Details

How to Cite
Thaenthong, J., Laeman, S., & Duangdee, W. (2020). Emergency Notification System with LoRa Technology for Elevator Case Study: Prince of Songkla University, Phuket Campus. Journal of Science Ladkrabang, 29(2), 72–85. Retrieved from https://li01.tci-thaijo.org/index.php/science_kmitl/article/view/240088
Section
Research article

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