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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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GUI Design for Comparative Output Signal DFT and DTFT with LabVIEW Dwi Astharini; Tsaura Aulia; Putri Wulandari; Rahmat Alamtaha; Rifqy Afisha
INSIST Vol 4, No 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.272 KB) | DOI: 10.23960/ins.v4i1.210

Abstract

An application GUI (Graphical User Interface) is designed as a software simulation to compare the output signal of DFT and DTFT. DFT (Discrete Fourier Transform) and DTFT (Discrete Time Fourier Transform) are part of the digital signal processing. Digital signal processing is an analog signal processing method uses a mathematical technique to perform a transformation or retrieving information in digital form. One of the benefits of digital signal processing is to facilitate the representation of the signal, because the signal in digital form will be more visible, easily processed and has high accuracy. This GUI application designed using LabVIEW from National Instruments.  LabVIEW is a software graphical programming or a block diagram. LabVIEW program known as VI or Virtual Instrument. The input signal in this application is a square signal
Uji Kinerja Modul Pelatihan Motor Penunjang Mata Kuliah Mekatronika 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.v3i3.217

Abstract

Abstrak – Teknis pemberian pulse width modulation (PWM) menjadi sangat penting terutama dalam pengendalian motor seperti pada motor direct current (motror DC), motor stepper maupun motor servo. Lebar pulsa duty cycle dalam satu perioda waktu  PWM akan menentukan tingkat keakuratan kecepatan maupun sudut. PWM diatur memggunakan program (assembly),  kemudian kecepatanya diamati menggunakan alat ukur laser tachometer sedangkan tingkat kepersisian sudutnya diukur menggunakan pola kertas (template). Untuk mendapatkan performa independensi setiap motor, maka motor dikendalikan dan diujicobakan tanpa menggunakan beban  (tidak ada uji torsi). Kata kunci- pulse width modulation mekatronika motor traineer. Abstract – the pulse width modulation (PWM) is especially inportant for motor controlling such as in DC motor, stepper motor and servo motor. The width of duty cycle in time period will determine speed and angle accurately. PWM wil be generated by using low level programm code of microcontroller (assembler), then speed of motor observed by laser tachometer and angle rotation observed by paper patern template. To get the performance independence of each motor, the motor is controlled and tested without the use of loads (no test of torque). Keywords – pulse width modulation motor traineer for mechatronic modules.
Lokalisasi Jarak dan Sudut Pembacaan Kartu Radio Frequecy Identification (RFID) Anwar Mujadin; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 3, No 2 (2015)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v3i2.187

Abstract

Abstrak – Teknis pembacaan kartu RFID (tag) dimana pembaca kartunya (card reader) diletakan dekat permukaan logam akan memiliki pelemahan sensitivitas  sinyal penerimaan radio frekuensi yang cukup significan. Dari hasil percobaan membuktikan bahwa received signal strength index (RSSI) akan berkurang 14 dBm bila reader diletakan dekat dengan permukaan logam. RSSI adalah sebuah pendekatan cermat untuk optimasi jarak dan sudut antara pemancar (tag) dan penerima (reader). Dari hasil percobaan  menunjukan pula bahwa bukan hanya jarak, sudut maupun logam yang mempengaruhi besaran nilai RSSI namun besaran kendali daya pemancar (reader) agar tag aktif dalam jarak dan sudut yang telah dilokalisai. Dalam paper ini akan dijelaskan dengan singkat hubungan antara kendali daya dan RSSI dalam mengaktifasi kartu RFID (tag). Kata Kunci - RFID received signal strength index, RFID Sensitivity reading tag Abstract – RFID card (tag) and card reader are placed near metal surfaces, will be have attenation  sensititivity of receiver signal radio frequency significantly. The result of exsperiment shown that distance between the tag and the reader using the received signal strength index (RSSI) will be reduce by 14 dBm from the beginning when RFID card reader placed near metal surface. RSSI is an careful approach to optimation the distance between a sender and a receiver. The our experiments shown that power control results are more stable and accurate than RSSI results. In this paper, will be  explain briefly the relationship between power control and RSSI in activates the RFID card (tag). Keywords – RFID received signal strength index, RFID Sensitivity reading tag
Prototipe Tempat Sampah Elektronik Bersuara Berbasis Mikrokontroler ATMega328P dan Decoder VS1011 Anwar Mujadin; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 1 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i1.242

Abstract

Abstrak – Perilaku membuang sampah sembarangan tidak pernah lepas dari pengaruh lingkungan sekitar. Saat ini, dalam menangggapi masalah buang sampah sembarangan sudah menjadi kebiasaan dimasyarakat yang biasa karena semua orang melakukannya. Merubah prilaku orang sangatlah tidak mudah perlu cara yang luar biasa. Pada penelitian ini telah dirancang bangun sebuah divais yang menyuguhkan beraneka ragam suara “aneh” yang menyebabkan si pembuang sampah selalu ingin melempar sampahnya pada divais ini. Prototipe menggunakan mikrokontroler ATMega328P dan decoder VS1011 sebagai pemutar suara dalam format MP3. Sistem elektronik menggunakan catu daya operasi baterai 12V, 5V dan 3.3V. Tulisan ini akan menjelaskan teknis optocoupler, power regulator dan karakteristik baterai. Kata Kunci – Tempat Sampah Elektronik, Teknis Optocoupler, Power Regulator dan Karakteristik Baterai Abstract – Behavior of littering is never out of the environment. Currently, in dealing with the problem of littering has become a habit in the ordinary community because everyone is doing it. Changing people’s behavior is not easy to need a great way. In this research has been designed to build a device that presents a variety of "weird" sound that causes the garbage disposal always wants to throw the garbage on this device. The prototype uses an ATMega328P microcontroller and VS1011 decoder as a sound player in MP3 format. Electronic systems use battery operation power supply 12V, 5V and 3.3V. This paper will explain the technical optocoupler, power regulator and battery characteristics. Keywords – Electronic Bin, Technical Optacoupler, Power Regulator, and Battery Characteristics
Penerapan Metode Simulasi Pra-Praktikum Menggunakan Graphic User Interface (GUI) dan FDATOOL, Matlab Octarina Nur Samijayani; Dwi Astharini
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.v1i4.87

Abstract

Dalam rangka upaya meningkatkan metode pengajaran, penerapan metode simulasi berbasis komputer pada tahap pra-praktikum telah diuji coba untuk Praktikum Telekomunikasi pada semester genap tahun ajaran 2010/2011. Simulasi mengenai materi yang akan dipraktekkan diberikan sebelum praktikum sebenarnya dilaksanakan. Berdasarkan hasil evaluasi yang dilakukan dengan teknik survei kuesioner, dapat disimpulkan bahwa metode simulasi pada tahap pra-praktikum ini memberikan manfaat utama yaitu menumbuhkan ketertarikan mahasiswa untuk melakukan praktikum serta dapat membantu persiapan materi oleh para praktikan sebelum praktikum dimulai. Secara keseluruhan, penerapan metode simulasi dinilai baik untuk dilakukan untuk dapat memberi manfaat positif bagi pelaksanaan praktikum, dan tentunya untuk meningkatkan pemahaman mahasiswa akan materi yang diajarkan.AbstractThe improvement of teaching method with simulation computer based have been implemented for Telecommunication System subject course in University Al Azhar Indonesia, year of 2010/2011. The simulation is presented before the laboratory experiment using the real equipments. The evaluation brings the conclusion that the simulation as the preliminary stage done before the laboratory experiment is useful and brings more benefits. The main contribution is to raise the interest of students to do the laboratory experiment and also to help the preparation before the experiment. As the conclusion, this simulation learning method is useful and gives positive result to increase the understanding of student.
Ball On Plate Balancing System Pada KIT Praktek PID Mata Kuliah Dasar Sistem Kendali 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.v3i3.218

Abstract

Abstrak – Ball on plate adalah sistem pengendalian cerdas untuk mengarahkan bola  yang ada diatas plate sesuai dengan pola gerakan yang diinginkan tanpa menjatuhkan bola. Ball on plate ini digerakan oleh dua buah motor servo sebagai aktuator (keluaran) untuk menentukan posisi bola. Sedangkan kamera ditempatkan diatas plate sebagai sensor (masukan). Image yang ditangkap oleh kamera kemudian diolah oleh labview menjadi pixel posisi X dan Y. Kerjasama antar mikrokontroler Arduino Uno  dan Labview membentuk sebuah pengendalaian close loop system. Pada tulisan ini akan dibahas parameter penting dalam menganalisa  rise time, overshoot, settling time dan steady state error pada pengendalian sistem ball on plate menggunakan PID.Kata kunci - Arduino Uno R3 Ball on plate Controller, Abstract – Ball on the plate is an intelligent control system to steer the ball over the plate that is in accordance with the desired pattern of movement without dropping the ball. Ball on plate is controlled  by two servo motors as actuators (output) to determine the position of the ball. While the camera is placed on the plate as a sensor (input). Image captured by the camera and processed by labview to pixel positions X and Y. The cooperation among the microcontroller Arduino Uno and Labview configurate a close loop system. In this paper will discuss important parameter in analyzing the rise time, overshoot, settling time and steady state error in the control system using PID ball on the plate.Keywords – Arduino Uno R3 Ball on plate Controller 
Optimization of Hydraulic Servo Parameter for Semi-Solid Machine using Aerotech A3200 Fiqri Ibrahim Amien; Danny M Gandana; Nasril Nasril; Dwi Astharini; Ahmad Husin Lubis
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 2 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i2.258

Abstract

Abstract – Hydraulics machines are important parts in semi solid metal forging machine, to form the workpiece by pressing. Semi-solid machine positioning movements are required to have a high accuration, to get the high accuracy of the movement system a servo hydraulic control is added ,which consist of servo valve and digital controller (Aerotech A3200). The digital control parameters (kpos, kp, ki) are used to enhanced the hydraulic movement. To get the effect of the control parameters of the plant (hydraulic servo), a mathematical approach is used for simulation in matlab. In this research, study was done by optimize kp and ki parameters of the control system. Prior to the optimization, simulation was conducted using matlab. Where the simulated testing is using the input unit (step) and frequency (bode) to predict the circumstances that occurred to the plan which is then compared with experimental results. a step response was simulated in matlab to analyze the error of the hydraulic system. Having obtained the minimum error from adjusting kp and ki in matlab, a trend graphic error was used as a guideline to adjust parameter in actual system. The last step is to implement and adjust kp/ki in actual system and measure the real position error.Based on this research, it concluded that the error before adjustment are 0.6118-1.2642 mm for autotune  parameter kp 3500000, ki 50000. The result of average error in this experiments after adjustment are 0.017-0.166 mm for parameter kp 250000, ki 10000. Keywords - Hydraulic Servo, Aerotech A3200, Step response, Bode plot, Semi-Solid Machine.
Prototipe Pengendalian pH dan Elektro Konduktivitas Pada Cairan Nutrisi Tanaman Hidroponik Anwar Mujadin; Dwi Astharini; Octarina Nur Samijayani
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 1 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i1.241

Abstract

Abstrak – Prduk komuditas budidaya cara hidroponik saat ini  hasilnya belum optimal, ini disebabkan karena pemberian nutrisi pada tanaman hidroponik masih diperlakukan sama untuk semua jenis tanaman. Padahal setiap tanaman memiliki karakteristik sendiri terhadap nutrisi yang diserapnya. Parameter keberhasilan budidaya tanaman hidroponik tergantung pada pH dan densitas (kekentalan) dari cairan nutrisi yang diberikan. Dalam tulisan ini akan dijelaskan mengenai rangkaian elektronika pengukuran pH dan densitas nutrisi tanaman hidroponik. Hasil pengujian prototipe mampu diterapkan pada pembacaan  pH 5-9 dengan resolusi 0.63V/pH dan electro conductivitas sebesar Y= 2900e-X. Kata Kunci – Hidroponik, pH dan Masa jenis dari nutrisi tanaman hidroponik Abstract – Currently, commodity product of hydroponics plant has not optimal yet caused by giving nutrients in hydroponic plants are still treated equally for all types of plants. Whereas  each plant had own characteristics of the nutrients absorbed. pH meter and viscosity(electro conductivity)  are the parameters decided for growing plant. In this paper will be explained clearly of electronics circuit  pH measurement and electro conductivity. At eksperiment prototipe   can  be  reading  at pH 5-9  with  resolution  0.63V/pH  and electro conductivitas atY= 2900e-X. Keywords – Hydroponics, pH and Density of liquid nutrient plant
Pengembangan Sistem Pendeteksi Lokasi Titik Api dalam Ruangan Terbatas Dwi Astharini; Suci Rahmatia; Tio Apridinata; Raja P Batubara
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 2, No 2 (2013)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v2i2.129

Abstract

Abstrak - Tulisan ini melaporkan pengembangan perangkat untuk pendeteksian adanya api dan menentukan arah lokasi api. Lokasi titik api dinyatakan jarak relatif terhadap sensor. Penelitian dibatasi untuk menentukan lokasi titik api pada ruangan tertutup, di mana suhu ruangan lebih terkendali dan diharapkan tidak terpengaruh pengaruh lingkungan seperti cuaca. Perangkat yang dikembangkan menggunakan sistem minimum berbasis mikrokontroler ATMega16, memanfaatkan sensor panas array TPA81 dan display LCD. Sistem telah mampu mendeteksi dan menentukan lokasi lilin pada radius 0,5 m 180 derajat. Abstract - This paper reports the development of a fire detection detection device for closed room. The device detects and locates the present of fire in a room. Location of fire or heatsource is defined as relative distance to the sensor. The development was limited for usage within closed room with normally controlled temperature.  The device was developed using a minimum system on microcontroller ATMega16, array heat sensor TPA81 and LCD display. The prototype introduced was firmly successful in detecting and locating a single candle within 0.5 m distance and 180 degree angle scope, assuming the device to be planted on a wall in a room.
PC Based Real Time Control of DC Motor Mohamad Fauzi Radsanjani; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 2 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i2.259

Abstract

Abstract – This final project report present a Pc based real time control of DC motor. Real time control systems can be defined as a technology which is related to mechanical application, electronic, and computer-based systems. In general, the equipment that is often used for controlling speed system is Arduino Mega 2560, DC motor, motor driver IC L298N, speed sensor IC LM393, and voltage sensor. Software in the system I used Matlab Simulink to monitor and control the speed of dc motor will show real data, they are displayed in signal RPM and signal Voltage, Matlab Simulink is used program to let the operator operates the system well. This monitor and control system can improve the effectiveness and efficiency in various industrial fields. Keyword – PC, Real Time, Control, DC Motor 
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