Implementation of Real-Time Reservoir Water Turbidity Monitoring System with Automatic Alarm and Control Using Blynk

Abstract

The quality of reservoir water can deteriorate due to the accumulation of particles such as mud, sand, and microorganisms, making the water cloudy and unusable. This condition is difficult to monitor directly, especially in reservoirs located at high altitudes. This research developed a real-time IoT-based reservoir water turbidity monitoring system equipped with alarms and automatic drain features through an application. The system is designed using the ESP32 microcontroller, the SEN-0175 turbidity sensor, the HC-SR04 ultrasonic sensor, the buzzer, the DN20 solenoid valve, and the Blynk platform. The turbidity sensor is capable of detecting increased turbidity from 2 NTU to 50 NTU. The ultrasonic sensor shows high accuracy with an average error of 0.41%. The buzzer activates automatically when the turbidity exceeds 25 NTU. The solenoid valve responds to application commands within 2 seconds. The app can display real-time data, notify, and control drainage. This system has been proven to be effective in monitoring water quality, providing early warnings, and facilitating the process of draining reservoirs.