Smart Water Monitoring System using Ultrasonic and pH Sensor with IoT Platform

Abstract

During floods and water pollution, delayed operations by corresponding authorities and communities have led to significant damage. The existing monitoring systems for flooding and water quality are inefficient because they function independently. Besides that, the conventional method of collecting information is time-consuming, and current systems do not alert people immediately. The current system must be upgraded to a real-time smart monitoring system so that people can access information immediately via their smartphones. The aim of this research is to develop a smart water monitoring system capable of monitoring water level and water quality in terms of pH level at a specific location. Both parameters can be tracked simultaneously by the proposed system. Ultrasonic and pH sensors are utilized to gather data. The microprocessor processed the data before sending it to the system's outputs, which include a Liquid Crystal Display (LCD), buzzer, and ThingSpeak as the IoT platform, which can be accessed via a smartphone. The results show that the JSN-SR04T is the best ultrasonic sensor to use for detecting water level because its percentage of error is only 1.38% and it can also reduce the system's power consumption by 13.89%. Furthermore, due to its low percentage of error 2.72%, the analog pH metre SKU: SEN 0161 is the appropriate pH sensor to detect a relatively correct pH level. Hence, by incorporating both sensors, a reliable system can be developed.