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All Journal Media Informatika Jurnal Ilmiah Poli Rekayasa Elektron Jurnal Ilmiah Jurnal Teknik Elektro Prosiding Semnastek Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat

Yul Antonisfia

Politeknik Negeri Padang

Author-ID : 229959

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Mechanical Engineering

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Ekstraksi Ciri pada Isyarat Suara Jantung Menggunakan Power Spectral Density Berbasis Metode Welch Yul Antonisfia; Romi Wiryadinata
Media Informatika Vol. 6 No. 1 (2008)
Publisher : Department of Informatics,Faculty of Industrial Technology,Islamic University of Indonesia

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

Telah dilakukan ekstraksi ciri data EKG untuk jantung murmur dan normal dengan mengklasifikasikan 24 isyarat murmur dan beberapa jantung normal. Perekaman menggunakan stetoskop dengan penguat berlebar bidang 1 kHz direkam suara jantung normal dari beberapa orang sampel dan untuk melengkapi data murmur patalogis maka di-download suara murmur jantung dari situs internet. Isyarat suara jantung kemudian dianalisis spektral dayanya untuk diekstraksi ciri dan dicari beberapa resolusi spectral-nya. Hasil yang diperoleh menunjukan bahwa dengan ekstraksi ciri menggunakan metode spektral dapat membedakan suara jantung normal dan murmur. Keberhasilan isyarat yang bercampur derau dengan SNR 10 dB dapat mencapai 90% dengan resolusi 125 cacah cuplikan frekuensi. Makin besar derau yang mempengaruhi isyarat suara jantung (SNR makin kecil) maka keberhasilan pengujian semakin mengecil.

Home Automation dengan Memanfaatkan Mini Komputer Raspberry Pi sebagai Pengontrol Perangkat Elektronik melalui Jaringan Lokal Aprinal Adila Asril; Yul Antonisfia; Ihsan Lumasa Rimra; . Lifwarda
Jurnal Ilmiah Poli Rekayasa Vol 15, No 1 (2019): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Meningkatnya kesibukan manusia yang tidak dapat ditunda dalam kehidupan sehari-hari mengakibatkan manusia sekarang tidak memiliki cukup waktu luang untuk melakukan banyak kegiatan dalam waktu yang sama. Disinilah peran teknologi untuk mempermudah dan memperlancar kegiatan manusia dalam kehidupan sehari-hari. Dengan menggunakan Raspberry Pi, dibuatlah sistem Home Automation yang dapat menyelesaikan permasalahan tersebut. Sistem ini juga sangat berguna untuk membantu manusia yang memiliki kebiasaan buruk dalam hal penghematan daya listrik dan jangka waktu pakai sebuah perangkat elektronik, contoh sederhananya kebiasaan lupa dalam mematikan televisi. Pada tugas akhir ini dirancang sebuah sistem dimana, nantinya user dapat melakukan kontrol terhadap beberapa perangkat elektronik yang terdapat pada miniature rumah. Pengontrolan dilakukan dengan mengakses ke webserver yang terdapat pada Raspberry Pi, kemudian melakukan kontrol melalui jaringan lokal. Jaringan lokal tersebut, terdiri dari 3 jaringan yang terhubung oleh 2 wireless router Linksys cisco WRT120N. Dalam melakkukan kontrol Raspberry Pi terhubung pada modul relay yang berfungsi sebagai pemutus dan penyambung arus listrik perangkat elektronik. Hasil pengujian Home automation menunjukkan bahwa untuk dapat mengakses perangkat elektronik yang berada pada miniature rumah maka user dan server harus terhubung dalam jaringan lokal. Sistem ini diakses dengan media kabel dan wireless, dengan melewati beberapa wireless router sistem ini nantinya dapat diimplementasikan pada internet. Kata kunci: Home Automation, Raspberry Pi, wireless router, Linksys Cisco WRT120N, webserver

PENGISIAN AKI DENGAN BUCK CONVERTER Yul Antonisfia; era madona
Elektron : Jurnal Ilmiah Vol 5 No 1 (2013): Elektron Jurnal Ilmiah
Publisher : Teknik Elektro Politeknik Negeri Padang

Buck converter is one of DC chopper which has the function of stabilizing the voltage to lower voltage where the output voltage is lower than the input voltage without having to remove power is relatively large. By using a buck converter is a high voltage can be reduced to lower as you wish without losing power is relatively large. The voltage output of the buck converter is able to charge the battery. The magnitude of the output voltage depends dutycyle switching generated by the microcontroller. This tool is also equipped with a flow sensor is used to detect the charging current into the battery. If the charging current is reduced, the buzzer will sound. The tool is based microcontrollers using BASCOM ATMEGA8535, which can generate a PWM with dutycyle specified. Dutycyle determined the size of the input voltage and the desired output.

Rancang Bangun Antena Mikrostrip Bowtie Pada Frekuensi 5,2 Ghz Aprinal Adila Asril; Lifwarda Lifwarda; Yul antonisfia
Elektron : Jurnal Ilmiah Vol 10 No 2 (2018): Elektron Jurnal Ilmiah
Publisher : Teknik Elektro Politeknik Negeri Padang

Microstrip antennas are very concerned shapes and sizes. Can be viewed in terms of simple materials, shapes, sizes and dimensions smaller antennae, the price of production is cheaper and able to provide a reasonably good performance, in addition to having many advantages, the microstrip antenna also has its drawbacks one of which is a narrow bandwidth. In this research will be designed a microstrip antenna bowtie which works at a frequency of 5.2 GHz which has a size of 68mm x 33mm groundplane. For the length and width of 33mm x 13mm patch. This antenna is designed on a printed cicuit board (PCB) FR4 epoxy with a dielectric constant of 4.7 and has a thickness of 1,6mm. This bowtie microstrip antenna design using IE3D software. This antenna has been simulated using IE3D software showed its resonance frequency is 5.270 GHz with a return loss -23 595 dB bandwidth of 230 MHz, VSWR 1,142, unidirectional radiation pattern and impedance 43,919Ω. The results of which have been successfully fabricated antenna with a resonant frequency of 5.21 GHz with a return loss -16.813 dB bandwidth of 79 MHz, VSWR 1.368, unidirectional radiation pattern, impedance 43,546Ω and HPBW 105 °.

Simulasi Sistem Monitoring Arus Lebih Pada Jaringan PLN Satu Fasa Menggunakan Web Berbasis Mikrokontroller Yul Antonisfia; Muhammad Irmansyah; Anggara Nasution
Elektron : Jurnal Ilmiah Vol 10 No 2 (2018): Elektron Jurnal Ilmiah
Publisher : Teknik Elektro Politeknik Negeri Padang

Modernization is indeed very influential in the lives of people today, with the existence of this modern era, everything is always related to technology. The place is far enough and to find out the condition of the excess current makes the PLN officials also have difficulty because there is no monitoring tool from the situation. From the description above, the author found the idea to make a Simulation System for Monitoring Overcurrent Systems in the PLN Phase One Phase Using a Microcontroller-Based Web. The tool uses the Arduino Mega microcontroller coupled with ACS712 Flow sensors, and Ethernet Shield Modules. The way this tool works is to detect the electric current that enters the Input from the electrical equipment load on the ACS712 sensor. In testing the author only uses 3 pieces of light as a burden to determine the state of excess current. If you use 1 load, the current that is read is 0.44A with a 100 Watt lamp power. And if the load is added by 1 load with 75 Watt of light power, the current that is read becomes 0.77A. Then the load is added with 1 lamp with a power of 60 Watt, then the current becomes 1.05A with the result at all three drop loads.

Simulasi Starter Mobil Dengan Kontrol Suara Menggunakan Android Model Berbasis Mikrokontroler Yul antonisfia; Andrizal andrizal; Rio Aditama
Elektron : Jurnal Ilmiah Vol 9 No 1 (2017): Elektron Jurnal Ilmiah
Publisher : Teknik Elektro Politeknik Negeri Padang

Kemajuan teknologi saat ini memudahkan pengguna kendaraan. Penggunaan kunci pada kendaraan bisa tergantikan dengan suara dengan perintah yang tepat. Simulasi ini menggunakan mikrokontroler Arduino Uno 328 untuk memproses data setelah adanya perintah suara dari android. Simulasi ini juga menggunakan modul Bluetooth sebagai penghubung antara Mikrokontroler Arduino dan Android. Perintah suara yang di masukan ke android akan mengirimkan data ke mikrokontroler, dan kemudian relay 1 sebagai indikator akan menyala (keadaan kontak mobil menyala dalam simulasi), dan ketika perintah untuk menghidupkan mobil maka relay 2 akan menyala (keadaan starter mobil menyala dalam simulasi). Dan perintah terakhir untuk mematikan kedua relay indikator (keadaan mobil dimatikan dalam simulasi).

Sistem Pengendalian dan Monitoring Distribusi Air Berbasis Nodemcu 8266 Laxmy Devy; Yul Antonisfia; Monica Febrina; Suryadi suryadi
Elektron : Jurnal Ilmiah Volume 12 Nomor 1 Tahun 2020
Publisher : Teknik Elektro Politeknik Negeri Padang

Clean water management is managed by a Perusahaan Daerah Air Minum (PDAM), which is centered on each local government. The distribution of water to consumers cannot be done evenly because of the water distribution system and manual monitoring. Overcoming these problems, the Water Distribution Equity System to Consumers can be used to monitor and control water distribution. This system regulates the debit and time zone for water distribution to consumers. Water discharge is detected by the water flow sensor, and the valve is connected to the servo and time zone using RTC DS1307. The water pump is controlled to maintain the volume of water in the reservoir. The water level in the reservoir is detected using the HC-SR04 ultrasonic sensor. Water distribution is monitored on PCs (Personal Computers) and smartphones using Delphi programming and Thingspeak. The reading of water discharge is generated during peak use times for each faucet is 1.9: 1.8: 1.8 while at the time of normal use the ratio of the initial distribution to each faucet is 2.5: 2.3, 1: 1, and 2.5: 2.3.

Monitoring dan Kontrol Gas CO Dalam Ruangan Berbasis Pemrograman LabVIEW dan Mikrokontroler Andrizal Andrizal; Yul Antonisfia
Elektron : Jurnal Ilmiah Volume 13 Nomor 1 Tahun 2021
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/eji.0.0.210

Carbon dioxide is gas produced by industrial pollution and motor vehicle exhaust emissions. The air is declared clean and healthy for human activities if the CO level does not exceed 15 ppm. Industrial pollution or motor vehicle pollution does not only pollute the outdoor air, but it is very likely to pollute the indoor air. For this reason, a system that is able to monitor and control CO levels in the room has been designed so that it is safe for users while doing this activities. The research stage is carried out by making a series of sensors to detect CO gas and then the sensor circuit is connected to the Arduino UNO microcontroller as an interface with a PC. The program used is LabVIEW programming as a neural programming for displaying Virtual Instruments as display media. The output system is an air purifier system that cleans the indoor air when the CO level is more than 15 ppm. Based on the results of trials and analyzes, the response of the sensor system is able to detect changes in CO gas within 7 seconds. The average monitoring of CO levels result when observed 30 times was 11.47 ppm. The air purifier response time is able to restore indoor CO levels to the maximum threshold of 15 ppm in the fastest time of 3 minutes and 22 seconds.

Implementasi Sistem Payment Toll Dengan Barcode Reader Berbasis Mikrokontroler Yultrisna Yultrisna; Yul Antonisfia; Andi Syofian
Jurnal Teknik Elektro Vol 8, No 1 (2019): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.365 KB)

Nowadays, to pass through the toll road, mostly riders often complain that the queue is quite long and quite long. Implementing Tool for Toll Payment Systems Using a Microcontroller-based Bar Code Reader is designed to facilitate transaction processing and make the time spent in the process of using the toll road more efficient. This paper describes the process of making automatic vehicle detection devices so that drivers do not need to stop to process the toll road usage. This tool is designed using a barcode reader as input data, Ethernet shield as an internet network (local), Arduino Uno as a process controller in sending data from barcode reader into SPT application, servo motor / as a driver to automatically open the gate and Android as notification/notification for toll road users. From the results of testing all input and output functions can be performed. In testing using a toy car unit, the reading distance of the barcode with the barcode reader is ± 7cm. In this case, the system can run well and has a pretty good performance because the barcode reader can read a maximum of ± 15cm.

IMPLEMENTASI MOVING AVERAGE FILTER PADA MIKROKONTROLER SEBAGAI PEREDAM NOISE SENSOR PIEZO ELEKTRIK UNTUK MENDETEKSI GELOMBANG SEISMIK (GEMPA BUMI) Zulharbi Zulharbi; Firdaus Firdaus; Yul Antonisfia; Sarjon Defit
Prosiding Semnastek PROSIDING SEMNASTEK 2014
Publisher : Universitas Muhammadiyah Jakarta

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

Getaran akibat gempa bumi akan mengakibatkan adanya frekuensi gelombang seismik denganfrekuensi rendah (0Hz - 20Hz), untuk mendeteksi keberadaan frekuensi gelombang seismiktersebut dapat menggunakan sensor piezo elektrik. Piezo elektrik adalah sebuah sensor seismikyang mempunyai getaran gempa beramplitudo rendah dan sangat mudah terkontaminasi noisesehingga dibutuhkan filter untuk meredam sinyal noise tersebut. Moving Average (MA) filteradalah suatu metode yang sederhana dan berguna untuk menapis derau acak yang terdapat padaderau asli. MA filter bekerja dengan cara meratakan sejumlah titik tertentu dari isyarat masukanuntuk menghasilkan tiap titik dari isyarat luaran. Gelombang seismic (getaran buatan) padapenelitian ini adalah dengan memberikan amplitudo sensor piezo PVDF antara 3mm, 5mm, 7mm,9mm dan 12mm pada frekuensi 2 Hz (konstan). Sensor piezo mendeteksi kekuatan getaran buatandengan menggunakan Moving Average Filter yang menghasilkan nilai SNR (signal to noiseratio) lebih kecil dibandingkan tidak menggunakan MAF Nilai PGA (peak groundacceleration) dalam satuan grafitasi akan tinggi pada saat sinyal amplitude getaran yangdiberikan juga tinggi (PGA = 0,01G pada saat amplitude getaran 3mm dan 1,43G pada saatamplitude getaran 12 mm).

Co-Authors - Andrizal - Hendrick - Suryadi Albar - Amril amril Andi Syofian Anggara Nasution Anton Hidayat Aprinal Adila Asril David Eka Putra Dedi Kurniadi Era Madona Firdaus Firdaus Ifni Joi Laxmy Devy Laxsmy Devy Lifwarda Lifwarda Monica Febrina Muhammad irmansyah Nadia Alfitri Randy Heriyanto Rangga Ade Julianto Rieke Syochrani Zaef Rimra, Ihsan Lumasa Rio Aditama romi wiryadinata Roza Susanti Sarjon Defit Tuti Anggraini Yuhefizar Yuhefizar Yultrisna yultrisna Zhefry Anovra Zulharbi Zulharbi - Zulharbi Zulharbi

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