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RANCANG BANGUN MEJA PINTAR MENGGUNAKAN SISTEM KOMUNIKASI CAHAYA arsyad ramadhan darlis; Zulqifli Maulana
Jurnal Elektro dan Telekomunikasi Terapan (e-Journal) Vol 6 No 1: JETT Juli 2019
Publisher : Direktorat Penelitian dan Pengabdian Masyarakat, Universitas Telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jett.v6i1.2534

Abstract

Sistem komunikasi cahaya (Visible Light Commuication) merupakan sistem komunikasi yang memanfaatkan cahaya tampak untuk mengirimkan sinyal informasi dari satu tempat ke tempat yang lain. Sistem ini dapat diterapkan dalam berbagai aplikasi, khususnya di dalam ruangan (indoor). Pada penelitian ini, diimplementasikan sebuah meja pintar yang diposisikan di dalam ruangan yang digunakan untuk mengirimkan sinyal audio yang berasal dari dalam meja menuju sistem penerima yang terletak di atas meja dengan memanfaatkan cahaya tampak yang dipancarcarkan. Sistem ini terdiri atas dua bagian, yaitu VLC Transmitter yang ditanam di dalam meja dan VLC Receiver yang diletakan di atas meja. Pada pengujian, bahan yang digunakan terdiri dari kaca bening, kaca gelap, akrilik bening, akrilik merah, akrilik hijau, dan akrilik biru sebagai pemisah antara VLC Transmitter dan Receiver. Pada Pengujian sistem, Sinyal informasi audio dengan menggunakan kaca dapat disampaikan memiliki kinerja paling baik dengan tegangan penerimaan maksimum 5 V dibandingkan akrilik. Dalam aplikasinya, kaca gelap lebih baik digunakan dengan mempertimbangkan tingkat kenyamanan pengguna terhadap tingkat penerimaan mata terhadap cahaya.
Remotely Garden Irrigation for Residential Area Based on Internet of Things (IoT) Lita Lidyawati; Lisa Kristiana; Arsyad Ramadhan Darlis; Lucia Jambola; Ratna Susana
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 1, No 1 (2020): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v1i1.35-44

Abstract

Activities such as planting and gardening become one of prominent hobbies. An issue of having such well grown plants is the impractical and unachieavable task to monitor 24 hours a day, thus we need a smart gardening system that can monitor the garden on demand. One of the problems in residential gardening systems is how to water the plants while the owner is not at home. Some of people have an adequate knowledge of using IoT to make their life easier. This paper proposes a simple automatic gardening system in watering several plants as programmed. In addition, this system allows human’s manual intervention either locally or remotely via Internet, to control a water pump. To build this smart gardening system, we use Xiaomi home application from Google Play. In this application, we can set the program to water the plants daily with definite time periodic independently.
Security and Watering System Counseling Based on Internet of Things (IoT) in Pondok Hijau Indah Residential Area Lita Lidyawati; Lucia Jambola; Arsyad Ramadhan Darlis; Lisa Kristiana; Ratna Susana
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 1, No 2 (2020): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v1i2.65-74

Abstract

Nowadays, security and gardening systems in densely populated residential areas are generally done manually. The security system in housing sometimes places security posts at street corners that are some distance from citizen’s homes thus they cannot be monitored at all times. Whereas other problem of watering system in citizen’s homes, someone has to water the plants one by one that it is not efficient in  energy, time and water availability thus that it can reduce the quality of the plants. Internet of Things (IoT) is a concept and method for remote control, monitoring, and various tasks. IoT is connected to a network that it can be accessed anywhere which can make things easier. IoT can be used to solve various problems. One of them is security issues and gardening activities. By using smart home technology, the security system is carried out by placing CCTV (Closed Circuit Television) which can be accessed by the home owner, anytime and anywhere the home owner is located. On the other hand, gardening is one of the most popular hobbies. In this field, IoT can be used to monitor and regulate various things to support gardening activities. In this community service activity, we are proposed a simple automatic gardening system for watering some plants programmatically in Pondok Hijau Indah residence. The system also allows manual human intervention either locally or remotely via the internet to control CCTV and water pumps. To build this smart Home system we will use the Xiaomi Home application from Google Play. In this application, we can set a program to control CCTV and water the plants every day at a certain time periodically, in this case, we set every 7 hours to watering the plants. 
Optical repeater for indoor visible light communication using amplify-forward method Arsyad Ramadhan Darlis; Lucia Jambola; Lita Lidyawati; Adisty Hanny Asri
Indonesian Journal of Electrical Engineering and Computer Science Vol 20, No 3: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v20.i3.pp1351-1360

Abstract

In this paper, the implementation of an optical repeater for indoor visible light communication using the amplify-forward method was proposed. In indoor, visible light communication (VLC) can occur by transmitting information signals from lamps as a VLC transmitter toward the VLC receiver as line-of-sight (LOS) that is located with only a few meters. In the non-los (NLOS) communication, the signal will be attenuated, so it needs to amplify to improve good signal quality in a VLC receiver. The optical repeater could be used to improve the signal quality that attenuating due to distance. The audio signal was generated and sent using VLC Transmitter toward the light emitting diode (LED). Then, the electrical signal was converted to become visible light, and it was amplified using an optical amplifier with an amplify-forward method. The signal in the form of visible light that had been amplified would be received by the photodiode (PD), and the VLC receiver processed it. The measurement results showed the system that used the optical repeater could improving the distance until 9.5 m with frequency 6000 Hz, where the best signal quality at a frequency of 3000 Hz. The measurement result showed that the use of repeater components with the amplify-forward method for VLC systems, especially in the room, can increase the range until 4.5 m compare without an optical repeater. This result exceeds the minimum distance of an indoor visible light communication system, with an average distance of the roof to the floor is 3.5 m.
Implementasi Sistem Penyiaran Musik Digital di Kafe menggunakan Visible Light Communication DARLIS, DENNY; DARLIS, ARSYAD RAMADHAN; ABIBI, MUHAMMAD HIDAYAT
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 5, No 1: Published January - June 2017
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v5i1.60

Abstract

ABSTRAKTeknologi penyiaran dengan frekuensi radio menggunakan teknik modulasi frekuensi (FM) telah dikenal sejak lama. Teknologi ini memfasilitasi pengiriman suara melalui sinyal analog dari pemancar kepada penerima. Pengembangan teknologi komunikasi menggunakan cahaya tampak yang memanfaatkan lampu LED sebagai pengirim informasi cukup banyak dilakukan. Pada penelitian ini diimplementasi sistem pengiriman dan penerimaaan siaran musik digital dengan memanfaatkan cahaya tampak yang berasal dari lampu penerangan di kafe. Sistem visible light communication (VLC) diimplementasikan dengan menggunakan metoda modulasi intensitas dan deteksi langsung (IM/DD). Dari hasil pengujian dapat ditunjukkan bahwa sistem ini dapat melewatkan siaran musik digital dengan redaman rata-rata 7,77 dB pada jarak maksimal adalah 3 meter. Hasil dari sistem yang telah dirancang dan diimplementasikan menunjukan hasil yang baik sehingga layak untuk diterapkan pada system penyiaran musik digital di kafe.Kata kunci: Visible Light Communication, IM/DD, Sistem Penyiaran Musik Digital, Sistem Penerangan Kafe.ABSTRACTBroadcasting technology uses radio frequency and technique of frequency modulation (FM) has been known for a long time. This technology allows the transmission of voice through analog signals from transmitter to receiver. Currently, many research on visible light communication technology utilizes LED lights as the sender. In this paper presented the results of transmitter and receiver system implementation of digital musik broadcast for use in the cafe. Visible light communication (VLC) system is implemented using intensity modulation and direct detection (IM/DD) method. From the test results can be shown that this system can pass digital musik broadcast with an average attenuation of 7.77 dB at maximum distance is 3 meters. Results of the system that has been designed and implemented shows good results, so it deserves to be applied to the digital musik broadcasting system in the cafe.Keywords: Visible Light Communication, IM/DD, Radio Broadcasting, Café Lighting.
Analisis Kinerja EIGRP dan OSPF pada Topologi Ring dan Mesh ARYANTA, DWI; DARLIS, ARSYAD RAMADHAN; PRIYAMBODHO, DIMAS
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 1: Published January - June 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i1.53

Abstract

ABSTRAKEIGRP (Enhanced Interior Gateway Routing Protocol) dan OSPF (Open Shortest Path Fisrt) adalah routing protokol yang banyak digunakan pada suatu jaringan komputer. EIGRP hanya dapat digunakan pada perangkat Merk CISCO, sedangkan OSPF dapat digunakan pada semua merk jaringan. Pada penelitian ini dibandingkan delay dan rute dari kedua routing protokol yang diimplementasikan pada topologi Ring dan Mesh. Cisco Packet Tracer 5.3 digunakan untuk mensimulasikan kedua routing protokol ini. Skenario pertama adalah perancangan jaringan kemudian dilakukan pengujian waktu delay 100 kali dalam 5 kasus. Skenario kedua dilakukan pengujian trace route untuk mengetahui jalur yang dilewati paket data lalu memutus link utama. Pada skenario kedua juga dilakukan perbandingan nilai metric dan cost hasil simulasi dengan perhitungan rumus. Skenario ketiga dilakukan pengujian waktu konvergensi untuk setiap routing protokol pada setiap topologi. Hasilnya EIGRP lebih cepat 386 µs daripada OSPF untuk topologi Ring sedangkan OSPF lebih cepat 453 µs daripada EIGRP untuk topologi Mesh. Hasil trace route menunjukan rute yang dipilih oleh routing protokol yaitu nilai metric dan cost yang terkecil. Waktu konvergensi rata-rata topologi Ring pada EIGRP sebesar 12,75 detik dan 34,5 detik pada OSPF sedangkan topologi Mesh di EIGRP sebesar 13 detik dan 35,25 detik di OSPF.Kata Kunci: EIGRP, OSPF, Packet Tracer 5.3, Ring, Mesh, KonvergensiABSTRACTEIGRP (Enhanced Interior Gateway Routing Protocol) and OSPF (Open Shortest Path Fisrt) is the routing protocol that is widely used in a computer network. EIGRP can only be used on devices Brand CISCO, while OSPF can be used on all brands of network. In this study comparison of both the delay and the routing protocol implemented on Ring and Mesh topology. Cisco Packet Tracer 5.3 is used to simulate both the routing protocol. The first scenario is the design of the network and then do the test of time delay 100 times in 5 cases. The second scenario tested trace route to determine the path of the data packet and then disconnect the main link. In the second scenario also conducted a cost comparison of metrics and the simulation results with the calculation formula. The third scenario testing time for each routing protocol convergence on any topology. The result EIGRP faster than 386 microseconds for a ring topology while OSPF OSPF 453 microseconds faster than EIGRP for Mesh topology. The results showed trace route chosen by the routing protocol metric value and cost is the smallest. Average convergence time in the EIGRP topology Ring of 12.75 seconds and 34.5 seconds, while the Mesh topology in an OSPF EIGRP for 13 seconds and 35.25 seconds in OSPF.Keywords: EIGRP,OSPF, Packet Tracer 5.3, Ring, Mesh, Convergence
Sistem Komunikasi Suara Bawah Air dengan Metoda Simplex menggunakan Visible Light Communication (VLC) JAMBOLA, LUCIA; DARLIS, ARSYAD RAMADHAN; LIDYAWATI, LITA; HUSAENI, DZIKRI FACHRI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 2: Published May 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i2.253

Abstract

ABSTRAKSistem komunikasi suara bawah air telah dikenal sejak lama, diantaranya sonar dan akustik. Seiring perkembangan zaman dan kemajuan teknologi, kini hadir komunikasi dengan media transmisi cahaya tampak yaitu Visible Light Communication (VLC) yang dapat diterapkan pada komunikasi bawah air. Pada penelitian ini telah dilakukan komunikasi suara bawah air (simplex) menggunakan VLC, dengan media akuarium berisi air dan beberapa pengujian diantaranya menggunakan color filter, didapat hasil pengujian terbaik yaitu tegangan 4,4 Vpp dan frekuensi 3,003 kHz untuk color filter yellow, pengujian menggunakan lensa didapat hasil pengujian terbaik yaitu tegangan 4,4 Vp-p dan frekuensi 3,051 kHz untuk lensa (+50), dan pengujian terakhir menggunakan lampu UV didapat hasil pengujian terbaik dengan tegangan 4,4 Vp-p dan frekuensi 3,010 kHz. Implementasi sistem VLC ini menunjukkan hasil yang baik dan layak untuk diterapkan pada komunikasi suara bawah air (simplex).Kata kunci: VLC, Komunikasi Suara Bawah Air, Simplex. ABSTRACTUnderwater voice communication systems have been known for a long time, including sonar and acoustics. Along with the development and advancement of technology, now there is communication with visible light transmission media, namely Visible Light Communication (VLC) which can be applied to underwater communication. Under this study underwater voice communication (simplex) has been carried out using VLC, with aquarium media containing water and several tests including using a color filter, the best test results obtained are voltage 4.4 Vp-p and frequency 3.003 kHz for yellow color filter, testing using the lens obtained the best test results namely voltage 4.4 Vp-p and frequency 3.051 kHz for lenses (+50), and the last test using UV lights obtained the best test results with a voltage of 4.4 Vp-p and a frequency of 3.010 kHz. The implementation of the VLC system shows good and feasible results to be applied to underwater voice communication (simplex).Keywords: VLC, Underwater Voice Communication, Simplex.
Perancangan dan Implementasi Sistem Remote Tilting Antenna untuk Aplikasi Base Station DARLIS, ARSYAD RAMADHAN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 1, No 2: Published July - December 2013
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v1i2.93

Abstract

ABSTRAKPada kondisi pembangunan suatu jaringan seluler baru, permasalahan coverage area terkadang perlu penanganan khusus. Jika coverage area dari suatu base station terlalu besar maka dapat mengakibatkan saling tumpang tindih (overlap) dengan sel yang berdekatan. Hal ini akan meningkatkan interferensi daya antar sel, yang kemudian berakibat pada penurunan kualitas layanan. Salah satu bentuk solusi untuk dapat memenuhi persyaratan coverage area, kinerja jaringan seluler, dan juga memenuhi tingkat keselamatan engineer adalah dengan menggunakan metoda down tilting antenna melalui wireless. Penetapan metoda down tilting antenna dilakukan dengan membuat suatu peralatan yang dapat menggerakkan posisi antenna pada base station. Perangkat yang diimplementasikan terdiri atas Transmitter, Receiver, Motor DC, Driver Motor, Logam Pengait, dan Antena. Sinyal yang berfungsi sebagai pengendali masuk ke Transmitter dan selanjutnya diolah oleh Receiver. Sinyal keluaran dari Receiver digunakan untuk mengendalikan motor DC melalui driver motor yang mengendalikan pergerakan dari Antenna Base Station. Pada penelitian ini, sistem telah dapat diuji memalui pergerakan antenna sampai dengan jarak 10 m. Tingkat kemiringan antena dibandingkan dengan pergeseran logam berkait menunjukan hasil yang linear. Setiap pergeseran 0,5 cm akan menyebabkan perubahan kemiringan antenna sebesar 1 derajat. Kata kunci: Remote Tilting, Motor DC, Transmitter, Receiver, Base StationABSTRACTOn the state of development of a new mobile network, problem coverage area sometimes need special handling. If the coverage area of a Base Station is too big then it may lead to overlap ( overlap ) with adjacent cells. This will improve inter- cell interference power, which then resulted in a decrease in the quality of service. One form of solutions to meet the requirements of the coverage area, the performance of cellular networks, and also meet the level of safety engineers is to use the method of tilting down through a wireless antenna. Determination method of antenna down tilting is done by creating a device that can move the position of the antenna on Base Station. The device is implemented consisting of Transmitter, Receiver, Motor DC Motor Driver, Metal Hook , and Base Station Antennas. Which serves as a signal controlling entry into Transmitter and subsequently processed by the Receiver. The output signal of the receiver is used to control a DC motor through a motor driver that controls the movement of Base Station Antenna. In this study, the system has to be tested memalui antenna movement up to a distance of 10 m. Levels compared to the friction slope antenna hooked metal has showed linear results. Each shift will lead to a change of 0.5 cm by 1 degree slope antenna.Key words: Remote Tilting, DC Motor, Transmitter, Receiver, Base Station
Deep Learning RetinaNet based Car Detection for Smart Transportation Network DEWI, IRMA AMELIA; KRISTIANA, LISA; DARLIS, ARSYAD RAMADHAN; DWIPUTRA, REZA FADILAH
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 3: Published September 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i3.570

Abstract

ABSTRAKDeteksi objek yang merupakan salah satu bagian utama dari sistem Smart Transportasion Network (STN) diajukan pada penelitian ini. Penelitian ini menggunakan salah satu model STN yaitu Infrastructure-to-Vehicle (I2V), dimana sistem ini bekerja dengan mendeteksi kendaraan mobil menggunakan model arsitektur RetinaNet dengan backbone Resnet101 dan FPN (Feature Pyramid Network), kemudian hasil deteksi mentrigger VLC transmitter yang terpasang di lampu penerangan jalan mengirimkan sinyal informasi menuju VLC receiver yang dipasang di mobil. Pada tahap proses training, jumlah dataset mobil yang digunakan adalah sekitar 1600 image dan 400 validation image serta pengulangan proses sebanyak 100 epoch. Berdasarkan 50 kali pengujian pada image test, diperoleh nilai precision mencapai 86%, nilai recall mencapai 85% dan f1-score mencapai 84%.Kata kunci: Object detection, RetinaNet, Resnet101, STN, VLC, I2V ABSTRACTObject detection is one of the main part in Smart Transportation Network (STN) system proposed in this research. This research used one of the STN models, namely Infrastructure-to-Vehicle (I2V), a system works by detecting car using RetinaNet architecture model with ResNet 101 and FPN (Feature Pyramid Network) as backbone, then the detection result triggers VLC transmitter set up on the street lighting to transmit information signal to the VLC receiver which set up in the car. At the training process stage, the number of car datasets is approximately 1600 images, 400 validation images and repetition of processes about 100 epochs. Based on the 50 times testing process on a image test, it is obtained 86% of a precision value, by reaching 85% of recall value, and 84% of f1-score. Keywords: Object detection, RetinaNet, Resnet101, STN, VLC, I2V
Simulasi Perancangan Filter Analog dengan Respon Chebyshev RUSTAMAJI, RUSTAMAJI; DARLIS, ARSYAD RAMADHAN; SUPARMAN, SOLIHIN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 1, No 2: Published July - December 2013
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v1i2.106

Abstract

ABSTRAKDalam suatu sistem komunikasi penggunaan rangkaian filter sangat penting. Salah satu cara untuk memudahkan dalam perancangan sebuah filter dilakukanlah teknik simulasi. Penelitian ini bertujuan untuk merancang simulasi yang menghasilkan respon filter jenis chebyshev serta menghasilkan nilai komponen induktor (L) dan kapasitor (C) yang dibutuhkan untuk merangkai filter. Simulasi yang dirancang pada penelitian ini menggunakan Graphical User Interface (GUI). Dari simulasi yang dilakukan, didapatkan respon Chebyshev pada low pass filter, high pass filter, band pass filter, dan band stop filter sudah sesuai dengan input yang dimasukkan ke dalam parameter program dan sesuai dengan teori respon filter Chebyshev. Hasil Simulasi dari rangkaian band pass filter dan band stop filter dengan menggunakan Electronic Workbench (EWB), menunjukkan respon dengan pergeseran frekuensi sebesar 0,1 kHz lebih tinggi dari frekuensi yang diharapkan.Kata Kunci: filter, Chebyshev, band, respon frekuensi. ABSTRACTOn communication system using filter is very important. One way to simplify the design of filter undertaken a simulation technique. This research aims to design a simulation that generates the filter response of chebyshev and generate the value component of the inductor (L) and capacitor (C) that needed for constructing the filter. This Simulation using Graphical User Interface (GUI). From result simulation, response in low pass filter, high pass filter, band pass filter, band stop filter and is in compliance with the input entered into the program and in accordance with the theory of Chebyshev filter response. The simulation of the band pass filter and bands stop filter by using electronic workbench ( EWB ), show a response with shifts frequency of 0.1 khz higher than frequency expected.Keywords: filter, Chebyshev, band, frequency respons