RAHMAN, FIKRI AULIA (2025) RANCANG BANGUN PROTOTYPE SISTEM MONITORING SUHU DAN KELEMBABAN RUANG SERVER DENGAN KONSEP MULTI-NODE BERBASIS INTERNET OF THINGS. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
A server room is a vital infrastructure that serves as the central hub for storing and processing critical data, requiring optimal temperature and humidity control to maintain performance, prevent hardware damage, and avoid downtime that can disrupt company operations. Environmental parameter deviations may lead to degraded server performance, permanent component damage, and even critical data loss, thus demanding a reliable, accurate, and responsive monitoring system. This study aims to design and implement a prototype Internet of Things (IoT)-based temperature and humidity monitoring system for server rooms using a multi-node sensor concept to detect environmental conditions at multiple points in real-time. The method involves four sensor nodes based on Arduino Nano with DHT22 sensors, communicating with an ESP32-based master node via the nRF24L01+ PA/LNA wireless module. Data received by the master node is stored in a database and displayed through a web dashboard. The system is equipped with automatic notifications via the Telegram platform to provide alerts when temperature or humidity exceeds predefined thresholds, as well as an automatic air conditioning (AC) speed control feature through a remote node connected to an infrared transmitter. Testing results show that the system can read and display temperature data with an average error of 0.96% and humidity data with an average error of 2.38% compared to a reference hygrometer. The system can also provide fast and accurate alerts when environmental parameters exceed set limits, while enabling remote monitoring through the web dashboard and Telegram. With high accuracy, multinode coverage, and real-time notification integration, this prototype enhances monitoring reliability and minimizes the risk of operational disruptions in server rooms. Keywords: Internet of Things, temperature monitoring, air humidity, server room, multi-node sensor, ESP32, nRF24L01, DHT22. Ruang server merupakan infrastruktur vital yang menjadi pusat penyimpanan dan pengolahan data penting, sehingga memerlukan pengendalian suhu dan kelembapan udara yang optimal untuk menjaga kinerja, mencegah kerusakan perangkat keras, dan menghindari downtime yang dapat merugikan operasional perusahaan. Ketidaksesuaian parameter lingkungan dapat menyebabkan penurunan performa server, kerusakan komponen permanen, hingga kehilangan data kritis, sehingga dibutuhkan sistem pemantauan yang andal, akurat, dan responsif. Penelitian ini bertujuan merancang dan mengimplementasikan prototipe sistem monitoring suhu dan kelembapan ruang server berbasis Internet of Things (IoT) dengan konsep multi-node sensor untuk mendeteksi kondisi lingkungan di berbagai titik ruangan secara real-time. Metode yang digunakan melibatkan empat node sensor berbasis Arduino Nano dengan sensor DHT22, yang berkomunikasi dengan node master berbasis ESP32 melalui modul nRF24L01+ PA/LNA. Data yang diterima node master kemudian disimpan dalam database dan ditampilkan melalui dashboard web. Sistem dilengkapi dengan notifikasi otomatis melalui platform Telegram untuk memberikan peringatan ketika suhu atau kelembapan berada di luar rentang yang ditetapkan, serta fitur pengaturan kecepatan pendingin (AC) secara otomatis melalui node remote yang terhubung ke infrared transmitter. Hasil pengujian menunjukkan bahwa sistem mampu membaca dan menampilkan data suhu dengan rata-rata error sebesar 0,96% dan rata-rata error kelembapan sebesar 2,38% dibandingkan hygrometer referensi. Sistem juga dapat memberikan peringatan secara cepat dan akurat ketika parameter lingkungan melebihi ambang batas, serta memungkinkan pemantauan jarak jauh melalui dashboard web maupun Telegram. Dengan akurasi tinggi, jangkauan multi-node, dan integrasi notifikasi real-time, prototipe ini dapat meningkatkan keandalan pemantauan dan meminimalkan risiko gangguan operasional pada ruang server. Kata kunci: Internet of Things, monitoring suhu, kelembapan udara, ruang server, multi-node sensor, ESP32, nRF24L01, DHT22.
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