Water Level Monitoring System for Flood Notification via LINE Application Using Narrowband IoT

Abstract

This research presents a water level monitoring system for flood notification via the LINE application using Narrowband IoT (NB-IoT). The objectives of this research are as follows: 1) To design and develop a prototype device that measures the water level using NB-IoT technology. 2) To design and develop an information system for monitoring, measuring, and comparing water level. 3) To evaluate the efficiency of the water level monitoring system in issuing flood notifications through the LINE application. The research methodology is divided into 2 parts: Firstly, design and develop a prototype device using NB-IoT technology, which sending real-time water level data from natural water sources in risk areas to the information system. Secondly, design and develop an information system utilizing to measure and compare water level data, consisting of a module that retrieves real-time water level data from the M7 water level measuring station of the Moon River, Mueang District, Ubon Ratchathani Province, a module that receives data from the prototype device, and a module to compare water level data from both sources based on predefined alarm thresholds: the prototype device and the M7 water level measuring station. If the water level of either source reaches the predetermined alarm threshold, flood risk alert messages are sent through the LINE notification. The performance evaluation revealed that the prototype device accurately transmitted water level data with NB-IoT technology, achieving a representation accuracy of 96.68%. Moreover, the system precisely issued flood alerts through the LINE notification, representing 97.33%.