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All Journal Journal of ICT Research and Applications TESLA: Jurnal Teknik Elektro INSIST (International Series on Interdisciplinary Research) JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Teknosains Kodepena (Kodepena Journal of Technoscience) Jurnal Pengabdian dan Kewirausahaan Jurnal Teknosains Kodepena (Kodepena Journal of Technoscience) Prosiding Seminar Nasional Pemberdayaan Masyarakat (SENDAMAS) Journal of Scientific Insights Exhibition and Seminar on Science and Creative Technology – Al Azhar Proceeding Jurnal Elektronika dan Telekomunikasi
Dwi Astharini
Electrical Engineering Department, Universitas Al Azhar Indonesia, Jalan Sisingamangaraja, Kebayoran Baru, Jakarta, Indonesia 12110
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Implementasi Sistem Sensor Sederhana untuk Peringatan Banjir melalui SMS Octarina Nur Samijayani; Fadjar Iftikar; M. Hariomurti; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 2, No 1 (2013)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v2i1.94

Abstract

Menilik pada beberapa masalah yang sering terjadi terutama di kota besar Jakarta, diantaranya banjir, kawasan perumahan di daerah dataran rendah dan berada disekitar sungai besar merupakan daerah rawan banjir. Pengabdian masyarakat berbasis penelitian ini bertujuan untuk menerapkan keilmuan elektronika mengenai instrumentasi dan mikroprosesor yakni sistem sensor air yang didesain untuk mengetahui ketinggian air di sekitar sungai dan saluran air dekat perumahan. Sistem sensor ini bertujuan memberi isyarat akan adanya banjir melalui SMS, sehingga pompa air dapat segera diaktifkan untuk menyedot air agar dialirkan ke sungai. Hasil uji coba laboratorium untuk sistem sensor air dengan prinsip dasar bahwa air sebagai penghantar menggunakan dua pelat konduktor telah berhasil diimplementasikan. Uji coba sistem dengan microcontroller dan GSM Module juga telah berhasil mengirimkan SMS (sebagai alert banjir). Sistem GSM akan mengirimkan SMS jika rangkaian LM339 mengindikasikan bahwa air telah mencapai ketinggian yang berpotensi terjadinya banjir.
A Straightforward Design and Implementation of Real Time Pressure Monitoring System in Water Pipe Dwi Astharini; Arizka Arizka
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 1, No 4 (2012)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v1i4.89

Abstract

This paper reports the development of a real time system for pressure monitoring inside water pipe. In water supply industry it is valuable to know the water pressure inside the pipe. Thus the system created consisting hardware parts in compact form along with software in laptop for high mobility. In the hardware part, pressure gauge is chosen as sensor, and a conversion of the data into frequency is decided for better communication with the computer. The process in the software includes data captures, conversion, and display using visual basic MSviewer.
Perancangan Robot Pengikut Garis Sederhana Sebagai Perangkat Pelatihan Tingkat Pemula Dwi Astharini; Rona Regen; Nasrullah Nasrullah; Ibrahim Ibrahim; Surya Agam
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 1, No 2 (2011)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v1i2.25

Abstract

Tulisan ini melaporkan perancangan robot sederhana pengikut garis. Dalam hal ini hasil rancangan akan digunakan sebagai  perangkat pelatihan siswa sekolah menengah, sehingga rancangan dibatasi pada fungsi minimumnya agar pembuatan dapat dilakukan secara in house. Perangkat keras dibangun menggunakan photodioda dan LED IR pada sistem sensor, ATMega16 sebagai pengendali utama dan PCB buatan sendiri.Design of a simple line follower robot is reported in this paper. In order to meet the needs on training for school student, the design is restricted to have just the minimum function so that the implementation can be done in house. The hardware built utilizes photodiodes and IR LED as sensor system, ATMega16 as main controller and manually made PCB.
Model Petri Net untuk Otomatisasi Destilasi Bioethanol Dwi Astharini; Ahmad Zulkarnaen; Yaya Suryana
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 3, No 1 (2015)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v3i1.181

Abstract

Abstrak – Petri net adalah satu di antara yang digunakan untuk pemodelan sistem otomatis. Tulisan ini melaporkan penggunaan model petri net pada purwarupa alat destilasi etanol otomatis, menggunakan PLC sebagai pengendali utama. Model proses mencakup perangkat keras dan lunak. Sistem pengaturan yang dimodelkan bertujuan menjaga agar suhu dalam wadah pemanas berada dalam kisaran titik didih etanol yaitu 80 ºC, serta pengamanan perangkat terutama terkait elemen pemanas. Pemodelan sistem pengaturan dikembangkan menggunakan petri net bebas, untuk implementasi pada PLC. Implementasi menghasilkan perangkat yang secara konsisten melakukan destilasi secara otomatis, dan menghasilkan cairan dengan kadar etanol 80% dari cairan awal berkadar 40%. Kata kunci – Petri net, PLC, destilasi, pengaturan suhu, pemanasAbstract – Petri net is on of models commonly used for automation and manufacture. This paper reports the use of petri net in modeling automated distillation process of ethanol, using PLC as main controller. The model encompassed hardware and software parts of the prototype built. The control system was aimed to keep the system at ethanol’s boiling point of 80ºC, while maintaining the hardware’s safety especially the heater. Free style petri net was used, then implemented on PLC. The resulting prototype has performed consistent performance of automatic distillation, producing 80% ethanol out of 40% ethanol.Keyword – Petri net, PLC, distillation, temperature control, heater
Design and Implementation of Electronic Control System of Blood Pump for Hemodialysis Machine Andi Iswahyudi; Pratondo Busono; Yaya Suryana; Anwar Mujadin; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 3, No 3 (2016)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v3i3.221

Abstract

Abstract – there are three methods of renal therapies, hemodialysis is the primary choise. This is because of the cheaper price compared to the CAPD. In addition, people in indonesia are still not understand the CAPD method. However, there are still many problems in the therapy using hemodialysis machine. This research aims to develop and to know the performance of the electronic control system for blood pump to match the ideal flowrate that will be used in hemodialysis treatment. This research resulting the blood pump charateristic is 179,4 step/ml when using glucose 10% and 168,2 step/ml when using glucose 20%. Based on fluid density, glucose 20% have the best performance with relative of error 0,06% at rpm 5 with 400 ml volume desired. From the result with rpm variation, the system has linearity with the slope M = 8970 step/ml = 4,2 rotation/ml using glucose 10%, and M = 8410 step/ml = 3,97 rotation/ml using glucose 20%. Which mean the slope is equivalent with the increased volume around 48,4 - 53,3 ml. It mean the blood pump rotation is constant and the system is working according the flowrate desired. It is found from the result, that many hardware factors can reducing the blood pump performance such as the roller degradation and the flexibility of the hose. Keywords – Renal Disease, Hemodialysis, CAPD, Blood pump, Flowrate
Mendisain GUI Untuk Menampilkan Nilai FFT dan IFFT Menggunakan LabVIEW Riny Alfina; Indrawan Arifianto; Dwi Astharini; Putri Wulandari
TESLA: Jurnal Teknik Elektro Vol 21, No 1 (2019): TESLA: Jurnal Teknik Elektro
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.264 KB) | DOI: 10.24912/tesla.v21i1.3250

Abstract

Methods FFT (Fast Fourier Transform) is a method for solving discrete signals which method IFFT (Inverse Fast Fourier Transform) is the reciprocal of the FFT method. Basically FFT only used for transformation and must not be separated from the method DFT (Discrete Fourier Transform). DFT is a mathematical transformation method for discrete time signal into a frequency domain. Examples for use of FFT-IFFT such as voice processing, OFDM and others. In this project the author designed the GUI for displaying the FFT and IFFT using LabVIEW. GUI design using Labview will inputed signal infromation or sample as desired and can be changed. From these results we obtained the value of V (amplitude), the value of the frequency and I/O (input/output) can be displayed in a single VI.Metode FFT (Fast Fourier Transform) merupakan metode untuk pemecahan sinyal diskrit yang mana metode IFFT (Inverse Fast Fourier Transform) adalah kebalikan dari metode FFT. Pada dasarnya FFT hanya digunakan untuk melakukan transformasi dan tentunya tidak lepas dari metode DFT (Discrete Fourier Transform). DFT merupakan metode transformasi matematis untuk sinyal waktu diskrit ke dalam domain frekuensi. Contoh untuk penggunaan FFT- IFFT seperti pengolahan suara, OFDM dan lain-lain. Pada projek ini penulis mendisain GUI untuk menampilkan nilai FFT dan IFFT menggunakan LabVIEW. Disain GUI menggunakan LabVIEW ini akan diinput sinyal informasi atau sample sesuai yang diinginkan dan dapat diubah-ubah. Dari hasil tersebut maka didapatkan nilai V (Amplitude), nilai frekuensi dan I/O (Input/Output) dapat ditampilkan dalam satu VI.
Performance of Interconnected Hybrid ZigBee-Optic for Extended Wireless Sensor Networks Octarina Nur Samijayani; Aina Sabrina; Raihan Zaky Thamrin; Dwi Astharini; Ary Syahriar
Journal of ICT Research and Applications Vol. 18 No. 1 (2024)
Publisher : DRPM - ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2023.18.1.5

Abstract

Wireless sensor networks (WSNs) are widely used to monitor remote areas far away from the monitoring center. For large-scale or high-capacity WSNs, when they contain many sensor nodes, a transmission system with low latency and large bandwidth is required. In order to extend the network range, the use of optical communication is one of the alternatives to provide more capacity and a longer range. This study discusses the performance of a range-extended WSN utilizing a hybrid of ZigBee and optic transmission. The performance of the proposed method was evaluated by analyzing the throughput, delay per meter, package loss, and error, which were then compared to a ZigBee-Wifi based system. The experimental results showed that the throughput of the hybrid ZigBee-Fiber Optic (ZigBee FO) system was about 12% greater than that of the ZigBee-Wifi system, and it transmitted the sensor data with a significantly lower delay, reduced by 83%, compared to the ZigBee-Wifi. The package loss and error of ZigBee-FO was 35.7% lower than that of ZigBee-Wifi. Based on these results, the ZigBee-FO WSN has the advantage of significantly improving network performance by reducing the transmission delay, therefore it is beneficial in extending the WSN range.
PROGRAM PEMBENTUKAN DAN PENGEMBANGAN WIRAUSAHA BERBASIS ICT DI FAKULTAS SAINS DAN TEKNOLOGI (FST), UNIVERSITAS AL AZHAR INDONESIA (UAI) Parwati, Niken; Tanjung, Widya Nurcahayanty; Safitri, Riri; Astharini, Dwi
Jurnal Pengabdian dan Kewirausahaan Vol 2, No 2 (2018): Jurnal Pengabdian dan Kewirausahaan
Publisher : Universitas Bunda Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30813/jpk.v2i2.1360

Abstract

ABSTRACTEntrepreneurship initiating and development program as a supporter of university programs as an enterprising university is designed to produce new entrepreneurs from FST UAI students and alumni. The activity plan starts from initial mapping, training, strengthening and launching. Preliminary Mapping takes SWOT measurements to map current tenants' strengths and weaknesses, to maximize opportunities and minimize threats that also accompany them. Followed by the trainings in seven parts, namely, business planning, financial planning, marketing management, E-Commerce, product development, Branding, IPR, and Muslimpreneur. Strengthening Phase 1 is the FGD regarding improvements and innovations, expansion and diversification, efficiency and utilization. In strengthening phase 2 there was discussion of real problems faced by tenants. The activity ended with the launch of 6 new ICT-based entrepreneurs per year and the publication of results. Keywords: entrepreneur, syariah, ICT, UAI
Penerapan Teknologi Peningkatan Penggunaan Panel Surya untuk Energi Mandiri di Rumah Gemilang Indonesia Depok Astharini, Dwi; Auni, Khairul; Subakti, Subakti; Putra, Geordiano D.K.; Pranata, A.J.; Alamsyah, Rahmadina; Rahmatia, Suci; Lubis, Ahmad Husin
Prosiding Seminar Nasional Pemberdayaan Masyarakat (SENDAMAS) Vol 3, No 1 (2023): Desember 2023
Publisher : UniversitasAl Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/psn.v3i1.2548

Abstract

Rumah Gemilang Indonesia (RGI) adalah unit program pemberdayaan dan pusat pelatihan dalam binaan Lembaga Amil Zakat Nasional (LAZ) Al Azhar dengan format pesantren singkat. Pada kampus Depok yang merupakan kampus utama RGI, telah  dilakukan pemasangan solar panel pada 2022 untuk menghasilkan energi mandiri, namun masih terdapat permasalahan terkait perangkat penyimpanan energi dan pengaturan aliran energi ke beban dan ke penyimpanan. Pada kegiatan ini dilakukan penerapan teknologi yaitu peningkatan penggunaan solar panel di RGI Depok. Solusi yang ditawarkan adalah menyelesaikan permasalahan sistem penyimpanan daya oleh tim abdimas dengan melibatkan pihak RGI secara teknis. Langkah kegiatan meliputi pengambilan data teknis awal, penyiapan perangkat, instalasi, pemantauan, dan evaluasi. Keseluruhan pelaksanaan melibatkan mitra yaitu tutor, peserta, dan pengelola RGI. Kegiatan tahun 2023 telah meningkatkan pasokan panel surya harian dari 5.24 Kwh menjadi 16.25 Kwh, serta menambah fitur pemantauan system berbasis IoT yang meningkatkan keterlibatan mitra khususnya tim computer dan jaringan RGI.Kata kunci: Panel Surya, Energi Mandiri, Rumah Gemilang Indonesia, IoT
Honey Price Classification using K-Nearest Neighbor Machine Learning Budi Aribowo; Aprilia Tri Purwandari; Tsabitah, Nimah; Reudinta Zesha; Dwi Astharini
Journal of Scientific Insights Vol. 2 No. 1 (2025): February
Publisher : Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/jsi.v2i1.222

Abstract

The global honey market faces significant challenges due to price inconsistencies, which often do not correlate with the actual quality of the honey. This research aims to develop a honey price classification model based on quality using the K-Nearest Neighbor (K-NN) machine learning method. The contribution in this research is a machine learning model that can classify honey prices validated by measured variables of honey concentration. Data was collected on 14 types of honey, focusing on price per 100 ml, pcategorized into 'cheap' and 'expensive' classifications. Data processing includes statistical testing using T-Test to determine the significance of price differences, followed by applying the K-NN algorithm for classification. Model performance is evaluated using metrics such as accuracy, the Receiver Operating Characteristic (ROC) curve, a graph used to evaluate the performance of binary classification models, and the Area Under the Curve (AUC). The results show that the K-NN model achieves an optimal accuracy of 100% and an AUC of 1.00 when the K parameter is set to 3, indicating excellent classification ability. It is hoped that these findings will increase market transparency, set fairer price standards, and help consumers and producers in making decisions in purchasing honey.
Co-Authors Abdillah, Muhammad Hasya Afisha, Rifqy Ahmad Husin Lubis Ahmad Zulkarnaen Aina Sabrina Alamsyah, Rahmadina Alamtaha, Rahmat Amjat Al Baihaqi Andi Iswahyudi Anwar Mujadin Aprilia Tri Purwandari Arizka Arizka Ary Mayola Ary Syahriar Aryadi, Kian Assidqi, Nurul Imam Aulia, Tsaura Auni, Khairul Azmi Azizah Azzahra Azzahra, Azmi Azizah Bambang Kurniawan Budi Aribowo Damar Royyan Saputra Danny M Gandana Denny Hermawan Dharmawan, Fauzan Fadjar Iftikar Fiqri Ibrahim Amien Gandana, Danny M Hamid, Sofian Ibrahim Ibrahim Ibrohim Hasan Imam Wahyudi Indrawan, Imam Wahyudi Indrawan Arifianto Lubis, Ahmad Husin M. Hariomurti Mayola, Ary Moh. Ismail Mohamad Fauzi Radsanjani Muhammad Ismail Nasril Nasril Nasrullah Nasrullah Niken Parwati Nita Noriko Pranata, A.J. Pratondo Busono Putra, Dwi Putra, Geordiano D.K. Putri Wulandari PUTRI WULANDARI Putri Wulandari Rahmat Alamtaha Rahmatia, Suci Raihan Zaky Thamrin Raja P Batubara Ramadhan, Fahri Reudinta Zesha Rifqy Afisha Riny Alfina Riri Safitri Romilado, Fither Rona Regen Sabilah, Muhammad Arip Putra Samijayani, Octarina Nur Shafira, Rizka Sofian Hamid Stirman, Aini Nur Rachimah Subakti, Subakti Suci Rahmatia Suherman, Andika Surya Agam Tanjung, Widya Nurcahayanty Tio Apridinata Tsabitah, Nimah Tsaura Aulia Yaya Suryana Yaya Suryana Yunus Effendi