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All Journal Journal of Applied Information, Communication and Technology (JAICT) Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Abu Hasan
Politeknik Negeri Semarang
Computer Science & IT Control & Systems Engineering Engineering Mechanical Engineering Other

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Design of a Water Sprinkler System and Monitoring of Soil Moisture in Potato Cultivation of the Kledung Horticulture Seed Center based on the Internet of Things (IoT) Eko Supriyanto; Endro Wasito; Abu Hasan; Dhea Ernanda; Karenza Balqis
JAICT Vol 5, No 2 (2020)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jaict.v5i2.2023

Abstract

Potato is one of horticultural commodities that plays an important role to assure food security, mostly upper place such as plateau. Monitoring soil’s moisture and soil’s pH in potato plant tendance is the key point for good growth and development of potatoes. Soil moisture in a land is affected by the level of water contain in the soil. For that reason automatic monitoring system is needed to observe the land condition where the potato seedling is planted and a moisture control system that can ease the work. 40% to 70% of soil moisture is ideal for potatoes plant. The development of this design make use of wireless fidelity (wifi). This device keep the dampnes know less than 40%. If it’s less than 40%, the sensor will detected so the watering system will running and system will stop if reaching 70%. This design can monitor pH, temperature and humidity through the android application. With an accuracy level of the pH sensor for measuring 95.85% of acidity, the capacitive sensor for measuring soil moisture is 96.6% and DHT11 for measuring temperature and humidity at 99.75%.
Nutrient Film Technique (NFT) Hydroponic Monitoring System Helmy Helmy; Arif Nursyahid; Thomas Agung Setyawan; Abu Hasan
JAICT Vol 1, No 1 (2016)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2745.355 KB) | DOI: 10.32497/jaict.v1i1.425

Abstract

Plant cultivation using hydroponic is very popular today. Nutrient Film Technique (NFT) hydroponic system is commonly used by people. It can be applied indoor or outdoor. Plants in this systemneed nutrient solution to grow well. pH, TDS and temperature of the nutrient solution must be check to ensure plant gets sufficient nutrients. This research aims todevelop monitoring system of NFT hydroponic. Farmer will be able to monitor pH, TDS and temperature online. It will ease farmer to decide which plant is suitable to be cultivated and time to boost growth.Delay of the system will be measured to know system performance. Result shows that pH is directly proportional with TDS. Temperature value has no correlation with pH and TDS. System has highest delay during daylight and afternoon but it will decline in the night and morning. Average of delay in the morning is 11 s, 28.5 s in daylight, 32 s in the afternoon and 17.5 s in the night. 
Pengaruh Penggunaan Komposit –Rami Sebagai Penyerap Gelombang Radar Pada Stealth Technology Gayuh Pangestu Putri; Eddy Triyono; Budi Basuki S; Abu Hasan; Slamet Widodo; Suhendro Suhendro
Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (SENASTINDO) Vol 1 (2019): Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Publisher : Akademi Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.841 KB)

Abstract

Stealth technology (teknologi siluman) merupakan salah satu teknologi yang digunakan untuk menghilangkan jejak dari deteksi RADAR musuh dengan cara memperkecil RADAR Cross Section (RCS) pada target. Salah satu cara untuk memperkecil nilai RCS dapat menggunakan RADAR Absorber Material (RAM). maka dari itu munculah Inovasi membuat teknologi siluman dengan menggunakan material komposit ekonomis bersifat dielektrik berbahan rami dengan campuran bahan komposit serbuk Alumina (Al2O3) dan Resin Epoxy kemudian disebut dengan Komposit-Rami. Oleh karena itu, pada penelitian ini dimaksudkan untuk mengetahui nilai reflection loss Komposit-Rami dalam menyerap gelombang RADAR. Pengujian dilakukan pada rentang frekuensi 2 sampai 12 GHz dikarekterisasi dengan Vector Network Analyzer (VNA) menggunakan S-Parameter (S11). Dari hasil penelitian Komposit-Rami dengan ketebalan 5mm paling efektif untuk digunakan sebagai RADAR Absorber Material (RAM) dengan penyerapan optimum pada frekuensi S-Band sebesar -15,158 dB, C-Band sebesar -16,398 dB dan X-Band sebesar -23,135 dB. sedangkan dari tiga band frekuensi tersebut, nilai reflection loss yang tertinggi dan optimum terdapat pada frekuensi X-Band dengan ketebalan 5mm yaitu sebesar -23,135 dB dengan Lebar pita penyerapan 1000 MHz dan memiliki persentase penyerapan sebanyak 93,1 %. Sehingga Komposit-Rami sangat efektif digunakan sebagai RAM pada frekuensi X-Band.
Design of VHF Directional Antenna on Class B Automatic Identification System (AIS) for Vessel Traffic Monitoring Eko Supriyanto; Abu Hasan; Hutama Arif Bramantyo; Hanny Nurrani
JAICT Vol 8, No 2 (2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jaict.v8i2.5017

Abstract

The majority of Automatic Identification System (AIS) equipment used on ships, harbormasters, and monitoring stations utilizes antennas that possess an omnidirectional beam pattern, covering all directions in a 360-degree range. One limitation inherent to omnidirectional antennas is their susceptibility to signal dispersion, resulting in suboptimal signal gain in certain directions. In the context of using omnidirectional antennas at Port AIS stations or other Monitoring Stations situated in expansive terrestrial regions, it is observed that the monitoring range is reduced. The objective of this study is to develop a prototype of a directional antenna capable of enhancing the monitoring range of ship traffic monitoring stations in alignment with the specific direction requested by land-based monitoring stations. The approach being utilized is the prototype method. This methodology encompasses the sequential steps of data collection, material and issue identification, planning, modeling, building, testing, and implementation.
Co-Authors Arif Nursyahid Budi Basuki S Dhea Ernanda Eddy Triyono Eko Supriyanto Endro Wasito Gayuh Pangestu Putri Hanny Nurrani Hutama Arif Bramantyo Karenza Balqis Rahadian, Helmy Slamet Widodo Suhendro Suhendro Thomas Agung Setyawan