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Hybrid System Using Two Panel Parallel Solar Cells 110 WP and PLN Power Source Sarono Widodo
JAICT Vol 3, No 2 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (802.045 KB) | DOI: 10.32497/jaict.v3i2.1286

Abstract

The limited availability of electricity and its continued use need to was sought for savings by providing alternative energy. New renewable energy sourced from sunlight can be an energy solution for electrical energy needs. Savings can be done using hybrid techniques from two sources to supply the load. This research makes hybrid plants utilizing sunlight using two panels of 110 wp capacity solar cells installed parallel to get a large output current. In this hybrid system used a deep cycle 12v / 100 Ah battery to supply 100-250 watts of light for three to four hours. The test results show that battery charging is very dependent on solar radiation and is needed for seven hours to reach 88% capacity and the inverter supplies a load of 213.5 watts on average for 45 minutes requiring 20% of battery capacity.
RANCANG BANGUN MODEL MONITORING DAN PENGENDALIAN AIR DALAM SISTEM SMART BUILDING BERBASIS IoT Yulia Setiani; Fitri Yuni Astuti; Sarono Widodo; Arif Nursyahid
Jurnal Teknologi Terapan Vol 8, No 1 (2022): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v8i1.338

Abstract

Instalasi air pada gedung-gedung umumya hanya diatur dengan menggunakan kran manual. Sistem instalasi air tidak dilengkapi dengan pemantauan dan pengendalian penggunaan air pada setiap ruang atau gedung. Rancang bangun pada penelitian ini adalah sebuah solusi untuk menjadikan instalasi air pada gedung mudah dipantau dan dikendalikan jika terjadi kebocoran pipa istalasi atau penggunaan air yang tidak wajar. Sistem  pematauan dan pengendalian berbasis IoT sehingga mudah mendapatkan data penggunaan air secara realtime dan dapat dikendaalikan melalui perangkat smartphone atau web. sistem ini menggunakan sensor flowmeter untuk membaca aliran air dan selenoid valve untuk membuka dan menutup aliran air yang mengalir pada pipa air. data sensor yang dibaca dikirim ke mikrokontroler untuk diolah dan selanjutnya dikirimkan ke internet melalui gateway LoRa. Data yang tersimpan pada database dapat diakses sekaligus dimonitor melalui smartphone dan web. sistem ini dilengkapi dengan pesan sebagai notifikasi kebocoran atau pemakaian air tidak wajar yang dikirimkan melalui telegram.                                                                                      Kata kunci :Internet of Things, Pengendali, Pemantau, Instalasi Air  
Design Build Temperature and Humidity Monitoring Internet of Things based for Optimization Oyster Mushroom Growth Waluyo, Catur Budi; Alsah Nur Laila; Sasya Puteri Setyahadi; Sarono Widodo; Abu Hasan; Thomas Agung Setiawan; Budi Basuki Subagio; Muhlasah Novitasari Mara
JAICT Vol. 12 No. 1 (2026): JAICT
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Oyster mushroom (Pleurotus ostreatus) cultivation in Indonesia faces challenges in maintaining stable temperature and humidity in the growing room, particularly because monitoring is still performed manually, which increases the risk of errors. To address this issue, Sasya Puteri Setyahadi and Alsah Nur Laila designed an Internet of Things (IoT)-based temperature and humidity monitoring system that can be accessed in real time and remotely. The system uses the SHT31 sensor for data acquisition, an ESP32 microcontroller as the main processor, and the Firebase platform for data storage and visualization. Data are displayed through a web application and are integrated with an automatic watering response when parameter values fall outside the optimal range of 16–30 °C for temperature and 80–95% for humidity. Testing results showed that the system is capable of reading and transmitting data accurately and quickly. The main contribution of this study is the development of an environmental monitoring system for oyster mushroom cultivation with an automatic notification feature based on threshold values, which can serve as a foundation for future automated control systems. Comparative testing showed that the SHT31 sensor had an average temperature measurement error of 1.427% (accuracy 98.573%) and an average humidity measurement error of 2.017% (accuracy 97.983%) compared to the HTC-1 reference instrument. Meanwhile, the JSN-SR04T water level sensor achieved an average error of 2.076% (accuracy 97.924%). Furthermore, the system demonstrated an average data transmission delay of 1488.89 ms and an average jitter of 11.588 ms. Overall, the high accuracy across tests, combined with relatively low delay and jitter values, indicates that the system performs effectively and reliably in maintaining the mushroom house environment within the ideal range required to support optimal oyster mushroom growth.