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All Journal Jurnal Informatika dan Teknik Elektro Terapan International Journal of Applied Sciences and Smart Technologies
Dani Kurniawan
Universitas Negeri Padang
Computer Science & IT

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Design of a Portable Air Quality Monitoring System Using Internet of Things Based Multisensor Mona Berlian Sari; Dani Kurniawan
International Journal of Applied Sciences and Smart Technologies Vol. 8 No. 02 (2026): December 2026 — Forthcoming
Publisher : Faculty of Science and Technology, Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/1xvrjw93

Abstract

The rise in air pollution in the modern era, particularly in urban areas, has hurt public health. Current conventional systems can only measure a limited number of parameters. While several air quality monitoring systems exist, they are extremely expensive and therefore inaccessible to the general public. The objective of this system is to monitor air quality by detecting harmful gases and fine particles in indoor air at a low cost. This system uses a multisensor setup consisting of a DHT11 sensor, an MQ-135 sensor, and a GP2Y1010AU0F sensor to measure temperature, humidity, CO gas levels, and fine particle levels in the air. The method applied is an engineering research approach to design a portable air quality monitoring system. The result of this research is a portable air quality monitoring system based on the Internet of Things. The results of the characterization tests for each sensor in the system indicate that the system can measure the parameters accurately. The DHT11 sensor has a coefficient of determination of 0.998 and 0.998, the MQ-135 sensor has a coefficient of 0.986 and 0.957, and the GP2Y1010AU0F sensor has a coefficient of 1. Based on the regression equations obtained, the performance of the DHT11, MQ-135, and GP2Y1010AU0F sensors indicates that they can effectively respond to changes in temperature, CO levels, and dust levels occurring in the environment.
PERANCANGAN SISTEM OPTOELEKTRONIKA SEDERHANA MENGGUNAKAN CAHAYA ULTRAVIOLET UNTUK ANALISIS INTERAKSI CAHAYA DENGAN ZAT Dani Kurniawan; Mona Berlian Sari; Yohandri; Rahmat Hidayat
Jurnal Informatika dan Teknik Elektro Terapan Vol. 14 No. 3 (2026)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v14i3.11021

Abstract

Analisis sifat penyerapan cahaya suatu zat memainkan peran penting dalam menentukan konsentrasi komponen penyusunnya yang memengaruhi stabilitas larutan, arah dan laju reaksi, serta sifat kimiawi zat-zat yang terkandung di dalamnya. Saat ini, pengujian kandungan dan konsentrasi zat dilakukan dengan menggunakan metode spektrofotometri, yang menawarkan akurasi pengukuran tinggi; namun, harga pembelian dan biaya pemeliharaan yang relatif tinggi membuat metode ini sulit diakses oleh masyarakat umum. Penelitian ini bertujuan untuk merancang sistem optoelektronik sederhana guna menganalisis interaksi cahaya dengan zat menggunakan radiasi ultraviolet. Penelitian ini menggunakan pendekatan teknik, dimulai dengan identifikasi masalah, tinjauan pustaka, analisis spesifikasi komponen, serta perancangan sistem optik dan elektronik, dan diakhiri dengan pembuatan dan pengujian. Sistem ini dirancang dengan LED UV 10W sebagai sumber cahaya dan sensor GUVA-S12SD sebagai detektor. Pengujian dilakukan melalui karakterisasi sensor dan pengujian akurasi. Hasil menunjukkan bahwa uji karakterisasi menghasilkan koefisien determinasi mendekati 1, sedangkan uji akurasi menunjukkan bahwa instrumen spektrofotometer ultraviolet memiliki akurasi rata-rata sebesar 98,99
Co-Authors Mona Berlian Sari Rahmat Hidayat Yohandri