Rancang Bangun Sistem Monitoring Nitrogen, Fosfor, Kalium (NPK), dan pH untuk Analisis Perubahan Kadar Nutrisi Tanah

Nurisalam, Royhan (2025) Rancang Bangun Sistem Monitoring Nitrogen, Fosfor, Kalium (NPK), dan pH untuk Analisis Perubahan Kadar Nutrisi Tanah. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tanaman bawang merah (Allium ascalonicum L.) merupakan salah satu komoditas hortikultura bernilai ekonomi tinggi di Indonesia, sehingga membutuhkan perhatian terhadap pemeliharaan kondisi tanah yang optimal. Keseimbangan unsur hara seperti Nitrogen (N), Fosfor (P), Kalium (K), dan tingkat keasaman (pH) tanah memegang peranan penting dalam pertumbuhan dan produktivitas tanaman. Penelitian ini bertujuan untuk merancang sistem monitoring kadar NPK dan pH tanah secara real-time berbasis Internet of Things (IoT) yang terintegrasi dengan sensor berbasis RS485, mikrokontroler Arduino Mega 2560, serta modul komunikasi seluler SIM7000E. Data sensor dikirim melalui jaringan seluler menggunakan protokol MQTT, disimpan di database InfluxDB yang di-host pada Virtual Private Server (VPS), dan divisualisasikan melalui antarmuka aplikasi web. Pengujian sistem dilakukan selama tujuh hari dengan perlakuan berbeda, yaitu pemberian pupuk cair pada hari Kamis dan Jumat, serta tanpa perlakuan pada hari lainnya. Hasil validasi menunjukkan akurasi sensor pH sebesar 94,73%, sedangkan sensor NPK mencatat akurasi sebesar 91,61% untuk Nitrogen, 90,03% untuk Fosfor, dan 91,95% untuk Kalium. Sistem berhasil mentransmisikan data dengan interval pembaruan 10 detik dan latensi respon aplikasi kurang dari 500 ms. Uji coba latensi jaringan menunjukkan rata-rata keterlambatan waktu pengiriman data sebesar 2 detik. Sistem juga mampu beroperasi secara stabil dalam jaringan GSM/LTE dengan kekuatan sinyal −70 dBm, meskipun jaringan NB-IoT belum tersedia di lokasi pengujian.
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Shallot (Allium ascalonicum L.) is one of the horticultural commodities with high economic value in Indonesia, so it requires attention to the maintenance of optimal soil conditions. The balance of nutrients such as Nitrogen (N), Phosphorus (P), Potassium (K), and soil acidity (pH) plays an important role in plant growth and productivity. This research aims to design an Internet of Things (IoT)-based real-time monitoring system of soil NPK and pH levels integrated with RS485-based sensors, Arduino Mega 2560 microcontroller, and SIM7000E cellular communication module. Sensor data is sent over the cellular network using the MQTT protocol, stored in the InfluxDB database hosted on a Virtual Private Server (VPS), and visualized through a web application interface. System testing was carried out for seven days with different treatments, namely the application of liquid fertilizer on Thursday and Friday, and without treatment on other days. The validation results showed the accuracy of the pH sensor was 94.73%, while the NPK sensor recorded an accuracy of 91.61% for Nitrogen, 90.03% for Phosphorus, and 91.95% for Potassium. The system successfully transmits data with an update interval of 10 seconds and application response latency of less than 500 ms. Network latency trials showed an average delay of 2 seconds in data transmission time. The system is also able to operate stably in GSM/LTE networks with a signal strength of -70 dBm, even though NB-IoT networks are not yet available at the test site.

Item Type:	Thesis (Other)
Subjects:	Q Science S Agriculture > S Agriculture (General) T Technology > T Technology (General)
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Royhan Nurisalam
Date Deposited:	04 Aug 2025 02:04
Last Modified:	04 Aug 2025 02:04
URI:	http://repository.its.ac.id/id/eprint/126367

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