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All Journal RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Jurnal Mantik Penusa Jurnal Abdi Ilmu Jurnal Mantik Instal : Jurnal Komputer Jurnal Mandiri IT Jurnal Teknologi Rekayasa Jaringan Telekomunikasi (TRekRiTel) International Journal of Research in Vocational Studies (IJRVOCAS) Jurnal Pengabdian Kepada Masyarakat dan Desa (PASSA) ATDS Saintech Journal of Engineering
Hutajulu, Elferida
Jurusan Teknik Elektro Politeknik Negeri Medan
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Journal : Jurnal Mandiri IT

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Implementation of PZEM-004T and LoRa for Internet of Things–Based Monitoring of Power Supply Sources in Laboratory Building Sirait, Regina; Pardede, Morlan; Hutajulu, Elferida; Junaidi, Junaidi; Pardede, Stephanie Ch Y; Pakpahan, Arnold
Jurnal Mandiri IT Vol. 14 No. 2 (2025): Computer Science and Field
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v14i2.457

Abstract

This research develops an Internet of Things (IoT)-based system to monitor electrical voltage parameters in two rooms of the Telecommunication Laboratory at Medan State Polytechnic. The system employs two sensor nodes (PZEM-004T, ESP32, and LoRa SX1276) and a gateway node integrated with WiFi and the Blynk cloud. The sensors measure voltage, current, power, energy consumption, frequency, and power factor, which are processed by ESP32 and transmitted via a LoRa multi-point network to the gateway for online monitoring. An automatic cut-off mechanism and email notifications are provided when abnormal voltage or current conditions occur. Experimental results show high measurement accuracy with a maximum error of 0.29% for voltage and 2.52% for current. However, data transmission experienced 20% packet loss, with an average delay of 11 seconds on Blynk and 37 seconds for email notifications. These findings indicate that the proposed system is effective in protecting laboratory equipment from abnormal power sources and provides reliable online and offline monitoring, although transmission performance requires further optimization.
Co-Authors Arnold Pakpahan Bakti Viyata Sundawa Banurea, Waldemar Ginting, Berta Br. Henry Toruan, Henry Hutagalung, Elizabeth Tania Henditia Imnadir, Imnadir Junaidi Junaidi Junaidi Junaidi Lumbantoruan, Heddy Lumbantoruan, Henry Hasian Melvin Emil Simanjuntak Morlan Pardede Morlan Pardede Morlan Pardede Mulyadi, Sangap Napitu, Daniel Pakpahan, Arnold Pakpahan, Binsar Maruli Tua Panjaitan, Berman P Pardede, Morlan Pardede, Stephanie Ch Y Purba, Angelia Purba, Arlina Regina Sirait Regina Sirait Regina Sirait Rianawati, Yunni Sikumbang, Ismael Simatupang, Eva sinabutar, dohar Sirait, Regina Siregar, Arfanda Sitanggang, Ernie Sitorus, M.B.H. Susaidin Toruan, Henry Hasian Lumban Udur 1 Januari Hutabarat, Udur 1 Januari