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All Journal Bulletin of Electrical Engineering and Informatics Jurnal IPTEK Jurnal Sinergitas PkM & CSR Journal of Robotics and Control (JRC) Journal of Applied Smart Electrical Network and System (JASENS) Jurnal Jaringan Telekomunikasi Jurnal Pengabdian Polinema Kepada Masyarakat
Amalia Eka Rakhmania
State Polytechnic of Malang
Aerospace Engineering Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

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Digital centralized water meter using 433 MHz LoRa Hudiono Hudiono; Mochammad Taufik; Ridho Hendra Yoga Perdana; Amalia Eka Rakhmania
Bulletin of Electrical Engineering and Informatics Vol 10, No 4: August 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i4.2950

Abstract

The local water supply corporation in Indonesia only uses analog water meter so that the monitoring of water usage information was conducted by officers manually. Officers must physically monitor the value in the customer's water meter that can lead to unreliable reading and ineffectiveness of process. Smart meter is one of the smart city metrics which could overcome this problem. This research uses the flow sensor to design and incorporate automated water meters. The measured value is then passed via the 433 MHz LoRa, a low-power wide-area network protocol, to the local hub, then forwarded to the server via the internet based cellular network. Results show that our proposed system's accuracy hit 97.31% at an ideal distance of 200 meters from customer to the local hub. The customer's water usage could be tracked in real time with our proposed system. Furthermore, the original water meter need not to be replaced which may minimize capital costs for this system.
Online Digital Image Stabilization for an Unmanned Aerial Vehicle (UAV) Wahyu Rahmaniar; Amalia Eka Rakhmania
Journal of Robotics and Control (JRC) Vol 2, No 4 (2021): July
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.2484

Abstract

The Unmanned Aerial Vehicle (UAV) video system uses a portable camera mounted on the robot to monitor scene activities. In general, UAVs have very little stabilization equipment, so getting good and stable images of UAVs in real-time is still a challenge. This paper presents a novel framework for digital image stabilization for online applications using a UAV. This idea aims to solve the problem of unwanted vibration and motion when recording video using a UAV. The proposed method is based on dense optical flow to select features representing the displacement of two consecutive frames. K-means clustering is used to find the cluster of the motion vector field that has the largest members. The centroid of the largest cluster was chosen to estimate the rigid transform motion that handles rotation and translation. Then, the trajectory is compensated using the Kalman filter. The experimental results show that the proposed method is suitable for online video stabilization and achieves an average computation time performance of 47.5 frames per second (fps).
Sistem Monitoring Keberadaan Pengunjung Pariwisata Secara Realtime Dengan Metode Wireless Network Clustering Mochammad Taufik; Hudiono Hudiono; Amalia Eka Rakhmania; Ridho Hendra Yoga P
Jurnal IPTEK Vol 23, No 2 (2019)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2019.v23i2.516

Abstract

Di era saat ini, perkembangan teknologi sangat pesat, termasuk di bidang pariwisata. Salah satu hal utama yang menjadi perhatian di bidang pariwisata adalah kenyamanan pengunjung, yang dipengaruhi oleh faktor keamanan, terutama keamanan anak-anak. Masalah yang sering terjadi adalah terpisahnya anak dengan keluarganya di tengah keramaian pengunjung pariwisata. Sistem monitoring yang dapat memantau posisi anak-anak merupakan solusi dari permasalahan ini. Sistem monitoring yang diajukan menggunakan metode wireless network clustering dan terdiri dari perangkat statis node, mobile node danserver. Mobile node merupakan perangkat yang dibawa oleh pengunjung anak-anak yang berfungsi mengirimkan data posisi secara realtime ke statis node menggunakan modul transmisi RF HC-12, sedangkan statis node berfungsi sebagai penangkap pancaran dari mobile node, yang kemudian mengirimkan data pada server untuk kemudian ditampilkan di perangkat android yang dibawa oleh orang tua atau keluarganya. Hasil pengujian menunjukkan bahwa data dapat dikirim dengan optimal ketika pengaturan RF HC-12 menggunakan daya transmisi 20 dBm dan posisi antenna spring vertikal. Statis node dipasang dengan jarak 15 meter satu sama lain, sesuai dengan radius maksimal pengiriman data RF HC-12. Akurasi yang didapat mencapai 92% dengan 1000 kali percobaan pengiriman data. 
TEKNOLOGI DIGITAL UNTUK PEMBERDAYAAN PEDAGANG SAYUR TRADISIONAL [DIGITAL TECHNOLOGY FOR EMPOWERING TRADITIONAL VEGETABLE PEDDLER] Moechammad Sarosa; Nurafni Eltivia; Putri Elfa Mas’udia; Mochammad Junus; Amalia Eka Rakhmania; Usman Zulhijah Muhamma6
Jurnal Sinergitas PKM & CSR Vol 4, No 1 (2019): October
Publisher : Universitas Pelita Harapan

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

Abstract

Rapid growth of online vegetable traders make the traditional one worry about their future, in which the bankruptcy is in near future, like several department store and other conventional businesses. The proposed digital technology is an online business tool for traditional vegetable peddlers aimed at supporting them to compete with online vegetable traders, building a better trading management, and equip them with information technology development and usability. Customer could order vegetables to the peddler through an application. The application will notify peddlers about the corresponding order, thus the peddler could pack and deliver the orders along with that day’s orders to the correct address. Market potential of this apps is highly large, due to the number of potential customers as well as the peddlers. To make it more efficient, this application implement zoning approach, in which customers areas are divided into several zone, differ from its number of population and area size. By implementing this method, the delivery process could be arranged in accordance with the shipping line in each zones, resulted in minimizing our shipping cost. The implementation of this application aimed to secure the peddlers job, protecting them from the unhealthy development and growth of online vegetable traders.
Implementasi Lampu Peringatan Pada Perlintasan Tanpa Palang Pintu Kereta Api Berbasis Mikrokontroler Aad Hariyadi; Moh. Syakur Romadhoni; M. Abdullah Anshori; Amalia Eka Rakhmania
Journal of Applied Smart Electrical Network and Systems Vol 2 No 01 (2021): Vol 2 No 01 (2021): June 2021
Publisher : Indonesian Society of Applied Science (ISAS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jasens.v2i01.188

Abstract

This research aims to make a warning light with a microcontroller base as a control system. With the aim of reducing the use of manual systems in general that are in use today. The advantage of this warning light control system is that it functions to reduce the number of accidents that occur and can be used for railroad crossings where there are still no latches that have not been installed on the railroad railroad crossing (wild road). The display of the work system that is made will be monitored using a web monitoring display that supports and is easy to understand. Even though it has some delay in the process, the planned system has run well based on the average delay value. The experimental results show the average delay measured in the system is 0.31 seconds before sending from the node and 0.49 seconds when there is a change in conditions, while when there is data transmission from the node. The measured packet loss on the system is 0% before transmission and fans and 8.88% when data is transmitted from the node.
Design and Optimization of Solar Panel Based on Sun Detector Junaedi Adi Prasetyo; M. Dimyati Ayatullah; Amalia Eka Rakhmania
Jurnal Jaringan Telekomunikasi Vol 12 No 2 (2022): Vol. 12 No. 02 (2022) : June 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i2.330

Abstract

Many factors cause people to be reluctant to apply solar panel technology as a source of renewable electrical energy, one of which is the efficiency level of solar panels which is still very low because the position of solar panels is generally facing in one direction. In this study, we designed a tool that can automatically drive the solar panel motor according to the comparison value obtained from the LDR sensor. There are four LDR sensors for comparison that are used as a reference tool to move towards the brightest light intensity. From this solar panel, the power will be stored in the battery which at the same time drives the motor so that the rays obtained are more optimal and faster for charging the battery. From the results of the research conducted, the energy efficiency in a day is 9 percent from normal conditions without using optimization. It is hoped that this tool can help the community to use alternative renewable energy sources that are more effective and efficient.
Pelatihan Pemasangan Lampu Otomatis pada Panti Asuhan Al-Husna Landungsari Kabupaten Malang Waluyo Waluyo; Moechammad Sarosa; Ahmad Wilda Yulianto; Rachmad Saptono; Amalia Eka Rakhmania
Jurnal Pengabdian Polinema Kepada Masyarakat Vol. 9 No. 2 (2022): Jurnal Pengabdian Polinema Kepada Masyarakat
Publisher : UPT Penelitian dan Pengabdian Kepada Masyarakat Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jppkm.v9i2.160

Abstract

Pengabdian kepada masyarakat ini ditujukan pada warga panti asuhan Al-Husna, untuk memberikan bekal keterampilan tentang dasar-dasar prinsip dasar rangkaian otomatisasi listrik. Dengan adanya pelatihan ini diharapkan peserta anak didik panti bisa lebih memahami dan mempunyai minat yang besar, khususnya tentang dunia elektronika dan aplikasi sensor otomasi. Kegiatan diawali dengan penjelasan singkat mengenai komponen elektronika yang digunakan dan cara kerjanya, eksperimen pada protoboard, kemudian pengujian lampu otomatis. Sensor passive infra red (PIR) digunakan pada pelatihan ini karena sifat kerjanya yang sederhana, sehingga mudah dipahami oleh peserta awam. Di akhir kegiatan, terlihat bahwa kemampuan dan pengetahuan peserta mengenai komponen elektronika meningkat. Peserta dengan tingkat pendidikan yang lebih tinggi, dalam hal ini SMA dapat menyerap informasi dan keterampilan yang lebih baik dibandingkan peserta dengan tingkat pendidikan SMP karena sudah memiliki dasar ilmu kelistrikan yang lebih baik.
Prototype of implementation of hybrid visible light communication technology for tele controlling systems in archives warehouse Yurike Aditya Eka Putri; Amalia Eka Rakhmania; Azam Muzakhim Imammuddien
Jurnal Jaringan Telekomunikasi Vol 12 No 4 (2022): Vol. 12 No. 04 (2022) : December 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i4.415

Abstract

Paper is one type of archive that is stored in the Archives Building. Maintenance of paper type archives needs to be considered to avoid mold growth and discoloration due to cigarette smoke. Therefore, a telecontrolling device is needed that can maintain a stable air humidity at 30% - 55% and a temperature of 15 °C - 22 °C. However, devices with a frequency of 2.4 GHz should not be used simultaneously in the same area because it will cause interference that can reduce performance. In this study, a temperature tele controlling system and smoke detection in the archive warehouse were made using hybrid visible light communication technology to improve data transmission performance. The system consists of 1 transmitter node connected to DHT 22, MQ 2, LED laser and WiFi network, as well as 2 receiver nodes to control the fan and water pump. The data from the receiver will be passed through the photodiode and then processed by the microcontroller. If the temperature value reaches the threshold, the receiver node will send a command so that the fan will turn on automatically, then if the smoke value reaches the threshold, the water pump will turn on automatically. The temperature and smoke values ??can be monitored in real time through the android application. The test results show that the use of hybrid visible light communication technology in the tele controlling system makes the delivery performance better.
Prototype of Cluster Housing Portal Security System Using Fingerprint and One Time Password Based on Internet of Things Mochammad Taufik; Anastasya Meliana C; Amalia Eka Rakhmania
Jurnal Jaringan Telekomunikasi Vol 12 No 4 (2022): Vol. 12 No. 04 (2022) : December 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i4.417

Abstract

Cluster housing is chosen by many people because of the security system is uses one gate system. However, the housing portal system that is often encountered still uses human labor and guest data recording is also still done manually.  It often happens that the housing portal is always open, so that residents and non-residents can enter and exit the housing freely. Based on the existing problems, this research proposes an innovation, namely "Prototype of Cluster Housing Portal Security System Using Fingerprint and One Time Password Based on Internet of Things". Fingerprint is used for portal access by residents, while One Time Password (OTP) is used by guests to access the portal. The OTP is made through the citizen's website. The OTP will later be sent by residents to guests, so they can access the portal without having to have a security guard. All portal access data and guest data can be monitored through the security officer's website. The test parameters in this study are the accuracy of the fingerprint sensor, the suitability of the OTP code, the accuracy of the proximity sensor E18-D80NK, Quality of services (QoS), and the overall system test.
Prediction of signal attenuation value caused by weather changes on cellular communication networks using backpropagation algorithm Hudiono Hudiono; Aurel Yllonia; Amalia Eka Rakhmania; Nurul Hidayati
Jurnal Jaringan Telekomunikasi Vol 12 No 4 (2022): Vol. 12 No. 04 (2022) : December 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i4.548

Abstract

The value of signal attenuation by the resulting weather changes may differ at any time. The collection of signal power data with different times, weather, humidity, rainfall, and temperatures using the drive test method in Malang area will be processed using machine learning methods and backpropagation algorithms. The process is carried out using Matlab software. In this study, data collection is carried out on four BTS ranges. In addition to these data, it is also necessary to calculate the value of signal attenuation by weather changes in order to find out whether the weather category is good or bad for telecommunications activities. When the weather is sunny and cloudy it has an RSSI range value of -85 dBm to -75 dBm, while in cloudy and rainy weather it has an RSSI range of -104,2 dBm to -87 dBm. Data from the results of the drive test measurements obtained the signal attenuation value by the largest weather change of 40.49718 dB and the largest rainfall of 681.8 mm / hour. Based on the test data, the signal attenuation value when the weather is sunny and cloudy is worth 0.096164 dB to 8.61604 dB, and in cloudy and rainy weather it has a greater attenuation value, from 12.3466 dB to 21.0098 dB. Using the backpropagation algorithm, the accuracy rate in this prediction reaches 99.7 %.
Co-Authors Anastasya Meliana C Aurel Yllonia Azam Muzakhim Imammuddien Hariyadi, Aad Hudiono Hudiono Hudiono Hudiono Junaedi Adi Prasetyo Junaedi Adi Prasetyo M. Abdullah Anshori M. Dimyati Ayatullah Mochammad Junus Mochammad Taufik Mochammad Taufik Moechammad Sarosa Moh. Syakur Romadhoni Nurafni Eltivia Nurul Hidayati Putri Elfa Mas’udia Rachmad Saptono Ridho Hendra Yoga P ridho hendra yoga perdana Rizky Refiza Usman Zulhijah Muhamma6 Wahyu Rahmaniar Waluyo Waluyo Yulianto Yulianto Yurike Aditya Eka Putri