Rancang Bangun Sistem Monitoring Arus dan Tegangan pada Peralatan Listrik Jarak Jauh Berbasis Teknologi Komunikasi Long Range

Abstract

The voltage and electric current connected to an electrical device can be monitored remotely without using cables (wireless). This article discusses the design of a system for monitoring the value of current and voltage using LoRa (long range) wireless technology. The design is carried out using an Arduino Uno as a microcontroller component, a PZEM-004T sensor as a voltage and current measurement device, and a LoRa Ra-02 SX1278 as a LoRa wireless communication module. Based on the test results, the design is able to detect voltage and current at a distance. The range that can be achieved is 500 meters without obstacles with a delay of 13 seconds. The loss that occurs at a distance of 130 meters is 150.29 dB, while the loss at a distance of 500 meters is 165.50 dB. The attenuation value produced by the system is -52.54 dB at a distance of 130 meters, while at a distance of 500 meters, the attenuation produced is -40.84 dB. The accuracy of the PZEM-004T sensor reading is very good, with an average error rate of only 0.098% in measuring current and voltage.