PERANCANGAN SISTEM PEMANTAUAN PARAMETER FISIS AIR BERBASIS INTERNET OF THINGS (IoT) MENGGUNAKAN RASPBERRY PI

In this study, a water physical parameter monitoring system based on the Internet of Things (IoT) has been designed using a Raspberry Pi. Parameters monitored in this system are pH, water temperature, water turbidity, and water level. These parameters are essential to determine the level of water quality and quantity. The sensors used are temperature sensor type DS18B20, turbidity sensor type SEN0189, water pH sensor type SEN0161, and ultrasonic sensor HCSR04 trigger for water level. The software system is a program that is embedded in the Raspberry Pi microprocessor. The working mechanism of the monitoring system is that the system detects the physical parameters of the sensors. The signal results from the sensors will be processed via the Raspberry Pi. The processed data is stored on a server that can be accessed via the web. The working mechanism of the monitoring system is that the system detects the physical parameters of the sensor, the signal results from the sensor will be processed via the Raspberry Pi, and the processed data is stored on a server that can be accessed via the web. The sensor sensitivity levels obtained from observations of the system for parameters of pH, turbidity, temperature, and water level are 52.715 mV/pH, 0.0005 V/NTU, 0.0255 V/°C, and 0.0583 milliseconds/cm, respectively. The accuracy obtained in the system test is an average of 96.86% to 99.9%. The precision of the system ranges from 0.94 to 0.99. From the accuracy and precision test results, the water physical parameter monitoring system can work well.