PENGEMBANGAN SISTEM PROTEKSI OVERCURRENT DAN OVERVOLTAGE DENGAN HUMAN MACHINE INTERFACE (HMI) BERBASIS LIQUID CRYSTAL DISPLAY (LCD) THIN FILM TRANSISTOR (TFT) 2.4 INCH

MAHFUD, KHOIRUL (2026) PENGEMBANGAN SISTEM PROTEKSI OVERCURRENT DAN OVERVOLTAGE DENGAN HUMAN MACHINE INTERFACE (HMI) BERBASIS LIQUID CRYSTAL DISPLAY (LCD) THIN FILM TRANSISTOR (TFT) 2.4 INCH. S1 thesis, Universitas PGRI Madiun.

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Abstract

This study aims to design, test the validity of, and determine user response to a prototype overcurrent and overvoltage protection system with a Human Machine Interface (HMI) based on a 2.4-inch Thin Film Transistor (TFT) Liquid Crystal Display (LCD). The method used was Research and Development (R&D) based on the ADDIE model. The prototype integrates an Arduino Uno as the controller, a PZEM-004T sensor as the electrical parameter reader, a relay and buzzer as protection actuators, and a TFT LCD touchscreen as the interface. Test results show that the PZEM-004T sensor has high accuracy, with an average voltage error of 0.41% and a current error of 4.36%, and that the system is capable of detecting overcurrent and overvoltage and automatically cutting off the power supply. Validation by 5 experts yielded a score of 90.4% (Highly Acceptable), feedback from 5 auto shop owners scored 90.8% (Highly Acceptable), and feedback from 21 students scored 89.2% (Good). The prototype was deemed suitable for use as both an electrical protection system and an interactive learning tool that supports contextual learning. Keywords: Protection System, Overcurrent, Overvoltage, Human Machine Interface, Contextual Learning.

Item Type:	Thesis/Skripsi/Tugas Akhir (S1)
Kata Kunci:	Kata Kunci : Sistem proteksi, arus lebih, tegangan lebih, Human Machine Interface, pembelajaran kontekstual. Keywords: Protection System, Overcurrent, Overvoltage, Human Machine Interface, Contextual Learning.
Subjects:	L Education > L Education (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Fakultas Keguruan dan Ilmu Pendidikan > Pendidikan Teknik Elektro
Depositing User:	KHOIRUL MAHFUD KHOIRUL
Date Deposited:	17 Sep 2026 03:20
Last Modified:	17 Sep 2026 03:20
URI:	http://eprint.unipma.ac.id/id/eprint/9704

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