Arkhan Subari
PSD III Teknik Elektro Fakultas Teknik, Universitas Diponegoro Jl. Prof. Sudharto, SH, Kampus UNDIP Tembalang, Semarang 50275, Indonesia

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SIMULASI PENENTUAN LOKASI GANGGUAN SATU FASA PADA JARINGAN TEGANGAN MENENGAH 20 KV BERBASIS ARDUINO MEGA 2560 DILENGKAPI DENGAN MONITORING MELALUI VTSCADA Ashifa, Danu Nur; Subari, Arkhan
Gema Teknologi Vol 20, No 2 (2019): October 2018 - April 2019
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.159 KB) | DOI: 10.14710/gt.v20i2.23097

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Danu Nur Ashifa, Arkhan Subari in this paper explain that in a distribution network of 20 KV, short circuit interference often occurs. Short circuit interference will produce a fault current that is felt by protection equipment. Each fault current will differ depending on the distance of the interference. Determining the distance of interference can not be displayed in SCADA, SCADA will only display the amount of interference and which equipment works. Determination of distance is carried out after analysis by the officer. Based on this matter the compiler makes a simulation tool where the tool can monitor the location of the disturbance from the nearest protective equipment that feels a single phase short circuit interference. The simulation tool consists of Arduino Mega 2560 which functions as a control center. The input used is a potentiometer as a simulator of the impedance magnitude that occurs during a single phase short circuit where the potentiometer will provide input in the form of a signal. And Omron LY2N relay which functions as protection equipment. After the experiment, the results obtained are that the tool can determine the location of interference from the nearest protection equipment based on changes in the bits read by Arduino. The larger the bits read by Arduino, the more distant the interference occurs from the protection equipment. 125 bits will produce an Arduino impedance calculation of 2.6 ohms so that the fault location is 0 km from PMT while 1023 bits will produce an impedance calculation of 21.30 ohms so that the fault location is 4.5 km from SSO.
RANCANG BANGUN SISTEM MONITORING KETINGGIAN AIR DAN KELEMBABAN TANAH PADA PENYIRAM TANAMAN OTOMATIS DENGAN HMI (HUMAN MACHINE INTERFACE) BERBASIS RASPBERRY PI MENGGUNAKAN SOFTWARE NODE-RED Wiguna, Esa Hayyu; Subari, Arkhan
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.2 KB) | DOI: 10.14710/gt.v19i3.21878

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Esa Hayyu Wiguna, Arkhan Subari, in this paper explain that the monitoring system is a system used to monitor and control work processes in a plant design. This system is widely used and applied in the industrial world to find out the performance of a plant. To do the monitoring system, a lot of software can be used, which is then called the HMI (Human Machine Interface). The monitoring system with an interface in the form of HMI can be presented in various forms, such as buttons, or can also be displayed in the visualization of the plant while working. This monitoring system through an HMI interface uses supporting hardware in the form of a Raspberry Pi as a device to process the data that will be displayed on the display screen, while displaying its visualization uses an LCD touch screen. This LCD touch screen is connected to the Raspberry Pi via the LCD driver. The graphic form that will be displayed on the LCD touch screen is designed using Node-RED software. The visualization that will be displayed on the Touch Screen LCD will be adjusted to the working system of automatic plant sprinklers. This monitoring system using an HMI interface can display the plant's working system through indicators of water level and soil moisture. To test tube 2 water level measured through ultrasonic sensors through HMI has an error ratio of 1.01%, while for soil moisture measured through soil moisture sensors has an error ratio of 1.51%.
PEMBUATAN CREAM DETERGENT UNTUK MENINGKATKAN KETRAMPILAN IBU-IBU PKK Kusumayanti, Heny; Budiyono, Budiyono; Dwimawanti, Ida Hayu; Yesiana, Reny; Purwanto, Agus; Subari, Arkhan
Gema Teknologi Vol 19, No 4 (2018): October 2017 - April 2018
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.466 KB) | DOI: 10.14710/gt.v19i4.19170

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Cream detergent is often used in everyday life, serves to wash and clean the dirt (fat). In order to commemorate the day of kartini in 2018, held a training on making cream detergent in Kp. Krapyak RT 07 RW 11 Bintoro Demak. The pH cream detergent generated from this training is 11, this is in accordance with SNI 0062: 2016, where the pH max cream detergent is 11. The purpose of this devotion provides the transfer of science and technology appropriately to the mother of PKK and also to provide skills and entrepreneurship to PKK mothers.
SIMULASI PELIMPAHAN BEBAN SISTEM PMT KOPEL TO KOPEL PADA SAAT PEMELIHARAAN TRAFO BERBASIS ARDUINO MEGA 2560 MENGGUNAKAN VT SCADA 11.2 Samputro, Muhammad Rizki; Subari, Arkhan
Gema Teknologi Vol 20, No 3 (2019): April 2019 - October 2019
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.265 KB) | DOI: 10.14710/gt.v20i3.25749

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Mochammad Rizki Samputro, Arkhan Subari in this paper explains that the need for electricity in everyday life demands PT. PLN to always maintain the distribution of electrical energy to customers. Therefore, it is necessary to use a strategy to prevent blackouts if the transformer is being maintained, that is by maneuvering the load through the network or by using a 20 KV coupling system. The 20 KV Coupling System consists of PMT Kopel Transformer 1 and PMT Kopel Transformer 2 or often called PMT Kopel to Kopel. In this research, a Kopel to Kopel PMT simulation tool is used to transfer transformer loads during maintenance using a LY2N DPDT 12 V relay, ZMCT103C current transformer sensor, voltage sensor, tap changer and use Arduino Mega 2560 as a delivery choice change. After the experiment, the total current size of transformer 1 and transformer 2 exceeds the capacity of transformer which is 4.29 A and the voltage difference is 0.71 V (5.9 %). Therefore it is necessary to adjust the current and voltage regulation so that it becomes 2.82 A and 0.06 V (0.5 %). After that the transfer of load Transformer 2 to Transformer 1 using PMT Kopel to Kopel can be done. The load transfer is done by entering the PMT Kopel 1 and PMT Kopel 2 simultaneously and the Incoming 2 PMT is released. For the normalization, PMT Incoming 2 is entered and PMT Kopel 1 and Kopel 2 are released simultaneously.
REALISASI PENGENDALI ON-OFF HISTERISIS DENGAN OPERATIONAL AMPLIFIER (OP-AMP) Tadeus, Dista Yoel; Subari, Arkhan; Manan, Saiful
Gema Teknologi Vol 19, No 4 (2018): October 2017 - April 2018
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.573 KB) | DOI: 10.14710/gt.v19i4.19150

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The realization of the On-Off control system can be built using the comparator principle. The principle has a weakness that is the possibility of chattering due to 'thin' limit of comparator switching. Low immunity to noise increases chances of chattering, if not anticipated it will cause 'fatigue' on actuator thus reducing component?s lifetime. Hysteresis has features to suppress chattering. This article describes how to realize the hysteresis On-Off controller using Operational Amplifier (Op-Amp) which is simple and cheap discrete electronics component, by modifying the Op-Amp comparator circuit so that it has the hysteresis band with minimum and maximum limit variable so that the reference point of the comparator can be shifted.
RANCANG BANGUN SISTEM MONITORING KEAMANAN RUMAH BERBASIS WEB MENGGUNAKAN RASPBERRY PI B+ SEBAGAI SERVER DAN MEDIA KONTROL Syabibi, Muhammad Khoiru; Subari, Arkhan
Gema Teknologi Vol 19, No 1 (2016): April 2016 - October 2016
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.955 KB) | DOI: 10.14710/gt.v19i1.21959

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Muhammad Khoiru Syabibi, Arkhan Subari  in this paper explain that Along with the progress of era, the development of advanced technology also impacts on the development of security systems. Sophisticated security systems that digitally integrated has been growing, one of them is a web-based security system. This web-based home security monitoring system uses a raspberry pi b + that serves as a server and media controller, then for the web programming, it uses HTML, CSS and Javascript. This web-based home security monitoring system home uses a webcam (web camera) that functions like CCTV which can be monitored via a web browser, magnetic switch as security detector, keypad as access control to turn off security monitoring system for 10 seconds, and the buzzer and LED as security indicators. When someone enter the house, he/she must press the keypad. If keypad input is correct according to the passcode then the LED will turn off, indicate that home security monitoring system off for 10 seconds. If he/she enter the house without pressing the keypad according to the passcode then when the door opens, a switch magnetic will active, then buzzer will sound and the indicator on the web will change, indicate that he/she is a person who will do the crime.Keyword : raspberry pi b+, webcam, magnetic switch, keypad, buzzer and LED. ReferencesAndre. 2014. Sejarah PHP dan Perkembangan Versi PHP. http://www.duniailkom.com/sejarah-php-dan-perkembangan-versi-php.Apache Software Foundation. About the Apache HTTP Server Project. http://httpd.apache.org/ABOUT_APACHE.html.Arfa. 2014. Akses Kontrol Kendaraan Bermotor Roda Empat Menggunakan Password dan Sensor. Skripsi. Jakarta: STMIK Raharja.Aziz, Abdul. 2012. Pengertian, Fungsi, Serta Cara Kerja Web Server. http://www.dedeerik.com/pengertian-fungsi-serta-cara-kerja-web-server.Baharudin, M. 2011. Pengertian Website. http://www.naevaweb.com/pengertian-website/arsip.html.Cox, Tim. 2014. Raspberry Pi Cookbook. Birmingham: Packt Publishing.Embedded Linux Wiki. Raspberry Pi, Low-level Peripherals. http://elinux.org/RPi_Low- level_peripherals.Embededdlinux. Raspberry Mode B-Block diagram. Diunduh http://embeddelinux01.com.Faizal. 2011. Prinsip Kerja Piezoelectric. http://www.insinyoer.com/prinsip-kerja-piezoelectric.Friedl, Stave. 2015. Secure Linux/Unix Access With Putty and Open SSH. http://unixwiz.net/techtips/putty-openssh.html/2015.Gudang Linux. 2011. Python. http://gudanglinux.com/glossary/python.Gurevich, Vladimir. 2011. Electric Relays: Principles and Applications. London: CRC Press.Harian Android. 2014. Pengertian dan Fungsi SD Card. http://www.harianandroid.com/2014/04/pengertian-dan-fungsi-sd-card.html.Heranudin. 2011. Rancang Bangun Sistem Keamanan Ruangan Menggunakan Radio Frequency. Skripsi. Depok: FT UI.Iswan, Agusta. 2012. Sistem Proteksi Brankas Berpassword Menggunakan Magnetic Doorlock sebagai Penggerak Doorstrike Berbasis Mikrokontroller. Tugas Akhir D3 Teknik Elektro. Semarang: FT UNNES.Kho, Dickson. 2012. Dioda dan Fungsi Dioda. http://teknikelektronika.com/-dioda-fungsi-dioda.Kho, Dickson. 2012. Pengertian LED (Light Emitting Diode) dan Cara Kerjanya. http://teknikelektronika.com/pengertian-led-light-emitting-diode-cara-kerja.Kho, Dickson. Pengertian Resistor dan Jenis Resistor. http://teknikelektronika.com/pengertian-resistor-jenis-jenis-resistor.Komponen Elektronika. 2011. Rangkaian Buzzer. http://komponenelektronika.com/rangkaian- buzzer.html.MS-1 Magnetic Door Switch datasheet. http://www.braude.ac.il/files/departments/electrical_electronic_engineering/labs/data_pages/p3.pdfNasih, Muhammad Usman. 2013. Alat Pengaman Kendaraan Bermotor Menggunakan Password dan SMS. Tugas Akhir. Yogyakarta: STMIK El Rahma.Özcan, Yakut. 2014. Piezoelektrik.Paul Malvino, Albert. 2010. Prinsip-Prinsip Elektronika. Jakarta: Erlangga.Pemrograman Komputer. 2012. Petunjuk Praktikum Pemrograman Komputer. Semarang: D3 Teknik Elektro UNDIP.Prayitno, Indra. 2010. Kupas Tuntas Malwar. Jakarta: Elex Media Komputindo.Raspberry Pi Fondation. GPIO Raspberry Pi Model A dan B. https://www.raspberrypi.org/documentation/usage/gpio/2009Raspberry Pi Fondation. Setting Up And Apache Web Server On A Raspberry Pi. https://www.raspberrypi.org/documentation/remote-access/web-server/apache.md.Raspberrry Pi Fondation. SSH Using Windows. http://raspberrypi.org/documentation/remote-access/ssh/windows.md/2014Richardson, Matt dan Shawn Wallace. 2015. Make: Getting Started with Raspberry Pi. Sebastopol: Maker Media.Robinson, Andrew dan Mike Cook. 2014. Raspberry Pi Projects. Chichester: John Wiley & Sons Ltd.Rohiman, Ao. 2011. Pengertian dan cara kerja router.http://www.catatanteknisi.com/2011/05/pengertian-cara-kerja-router.html.Sidik, Betha. 2011. Javascript. Jakarta: Informatika.Wahyu. Pengertian Webcam dan Fungsinya. http://wahyu.blog.fisip.uns.ac.id/2011/12/06/pengertian-web-cam-dan-fungsinya.Wikipedia. Secure Digital. https://en.wikipedia.org/wiki/Secure_Digital#Micro. 
RANCANG BANGUN DAN MONITORING PENYEARAH DAN ATS (AUTO TRANSFER SWITCH) PADA SISTEM MONITORING SUMBER DC GARDU INDUK BERBASIS ARDUINO MEGA 2560 Wirawan, Herdoyo; Subari, Arkhan
Gema Teknologi Vol 19, No 2 (2017): October 2016 - April 2017
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.622 KB) | DOI: 10.14710/gt.v19i2.21867

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Herdoyo Wirawan, Arkhan Subari, in this paper explain that the DC source at a PLN substation has a very important role in the smooth operation of the substation itself in a protection and serving the electricity needs of customers. This DC source serves to drive protective equipment, emergency lighting, and others.When the DC source on the receptor is interrupted, the dc source used is a DC source that comes from the battery. When certain conditions cannot guarantee whether the battery capacity is capable of supporting the load borne by the battery, it must always be monitored with a voltage sensor. In order for the protective equipment to continue to work, when the rectifier from the PLN power supply is cut off, a voltage source from 12VDC batteries is used. Switching the voltage source between the rectifier and the battery is done automatically by using the ATS (Automatic Transfer Switch) circuit. When the DC source from the PLN electricity supply will return it will be detected by an optocoupler sensor which later ATS will automatically switch the voltage source again.
RANCANG BANGUN APLIKASI PENGUKURAN TINGGI BADAN, BERAT BADAN, SUHU TUBUH, DAN TEKANAN DARAH BERBASIS MIKTROKONTROLER ATMEGA16 Dewi, Ratih Kusuma; Subari, Arkhan
Gema Teknologi Vol 17, No 1 (2012): April 2012 - October 2012
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.291 KB) | DOI: 10.14710/gt.v17i1.8916

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Ratih Kusuma Dewi, Arkhan Subari, in paper design and application of measurement stature , body weight , body temperature , and pressure based miktrokontroler atmega16 explain that now almost all uses of automation , both in the world of health . Equipment needed is the automation of the measurement tool capable of measuring several variables simply using a tool . The tool consists of ultrasonic sensors as a means of height measurement , the sensor strain guage as a means of weight measurement , LM35 temperature sensor as a means mengkuran body temperature , as well as a combination of MPX5100DP pressure sensors , motor driver , relay driver , as well as a mini compressor pressure gauge blood . The method used in the manufacture and testing of the tool by comparing the output of this tool with measuring devices in the market . The measurement results will be issued in the form of LCD , Voice Processor , and Database . Height measurement tool using these tools has a percentage error of 1.52 % , while for 2.314 % of body weight , body temperature by 1.62% , to pressure systole of 1.41 % , and for the pressure dystole of 0.858 % . Keywords : Ultrasonic Sensor, Strain Guage Sensor, Sensor LM35, MPX 5100DP, Microcontroller ATMega16.
SISTEM PAKAR KESEHATAN PADA IBU HAMIL BERBASIS MOBILE WEBSITE Setiyani, Umi; Subari, Arkhan
Gema Teknologi Vol 18, No 3 (2015): April 2015 - October 2015
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.856 KB) | DOI: 10.14710/gt.v18i3.21930

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Umi Setiyani, Arkhan Subari, in this paper explain that the maternal mortality rate in Indonesia is still high, every 1 hour, 2 maternal death. Lack of information about the health of pregnant women, to be one cause. By utilizing the WAP ( Wireless Application Protocol ) and expert systems can be made to maternal health expert system -based mobile website. Maternal health expert system is able to diagnose 15 to 61 illnesses symptoms often suffered by pregnant women . Diagnosis of the disease is designed using forward chaining inference engine with the aid of decision tables and decision trees . In addition the system is also able to calculate the daily calories needed by pregnant women using cooper . So with this system can help pregnant mothers to know their health condition . Keywords : expert system , Wireless Application Protocol , the health of pregnant women.ReferencesNatalia, Deasy Astrid. 2006. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Penyakit Paru pada Anak. SurabayaBroto, Adi Sadewo.2010. Perancangan dan Impelentasi Sistem Pakar untuk Analisa Penyakit Dalam. Semarang : Unversitas Diponegoro.Giarratano, J.C & Rilley G. 1994. Expert Systems: Principles and Programming, 2sd edition. USA : PWS Publishing Co.Kusrini. 2008. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Martin dan Oxman dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Turban, E. 1995. Decision Support System dan Expert System. USA  :Prentice Hall International IncMulyono, Djoko. 2008. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Menemukan Penyebab Kerusakan Mesin Isuzu Panther. Semarang : UnakiSurono, dkk.2009. Bahasa Indonesia Untuk Perguruan Tinggi. Semarang: Fasindo PressMc Leod dalam Turban,E. 1995. Decision Support System dan Expert System. USA : Prentice Hall International Inc.Turban dalam Mulyono, Djoko. 2008. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Menemukan Penyebab Kerusakan Mesin Isuzu Panther. Semarang : UnakiWilson dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Giarratano dan Rilley dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Solichin,Achmad. 2013. Pemrograman Web dengan PHP dan MySQL. Jakarta: UBLJuman, Kundang K. 2009. Komunikasi Multimedia.JakartaNokia. 2002. XHTML Guidlines. Finlandia : Nokia Corporation.Priyandari. 2013. Tutorial Database II, Mengenal RDBMS MySQL, http://blog.priyandari.net/2013/tutorial-database-ii-mengenal-rdbms-mysql-1/, diiakses tanggal 15 Agustus 2013.Anonim. 2013. XHTML MP (eXtensible HyperText Markup Language Mobile Profile). http://www.developesrhome.com/, diakses tanggal 4 Juni 2013Dinkes Jateng. 2011. Profil Kesehatan Jateng 2011. Semarang : Dinkes JatengSetiawan (Ed). 1998. Ilmu Kebidanan, Penyakit Kandungan, dan Keluarga Berencana. Finlandia: Penerbit Buku Kedokteran EGCWiknjosastro, Hanifa. 2005. Ilmu Kandungan. Jakarta : Yayasan Bina Pustaka Sarwono Prawirohardjo.Saifuddin, Abdul Bari. 2006. Buku Acuan Nasional Pelayanan Kesehatan Maternal dan Neonatal. Jakarta : Yayasan Bina Pustaka Sarwono Prawirohardjo.Poedyasmoro, SKM. 2005. Buku Praktisi Ahli Gizi (Buku Kuliah Politeknik Kesehatan Malang). MalangWahyudi, doni. 2004. Data Mining Email. Bandung
RANCANG BANGUN SISTEM PENGONTROL BATCH MIXER PADA INDUSTRI MINUMAN DENGAN METODE PID BERBASIS ARDUINO UNO R3 Hati, Redi Permata; Subari, Arkhan
Gema Teknologi Vol 20, No 1 (2018): April 2018 - October 2018
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (437.652 KB) | DOI: 10.14710/gt.v20i1.21077

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Redi Permata Hati, Arkhan Subari, in this paper explain that batch Mixer is a tool that accommodates some of the raw materials to be mixed so that it becomes a usable product. Raw materials can be a liquid, solid and gas. The use of raw materials and way of mixing the raw materials that distinguish Batch Mixer design at each industry. In this thesis, design Batch Mixer consists of two tanks, namely the mixing tank and tank heaters. In the mixing tank, there HCSR-04 Ultrasonic sensor that functions as a detector of the level of the liquid level, and the stirrer motor-driven DC 12 V. While the heater tank, there MAX6675 Thermocouple temperature sensor and heater. There are also three pumps that pump fluid 1, pump 2 and pump fluid mixing. Batch Mixer working process is controlled automatically using the Arduino Uno R3 displayed via HMI Raspberry Pi. The use Arduino Uno R3 allows users to create a variety of issues related to the microcontroller. The control system is used to control the work process in a plant. The control system in the Batch Mixer works by two indicators: the water level and water temperature. In the manufacturing system, water temperature control using PID control (Proportional Integral Derivative) with PID tuning method to find the value of Kp, Kd, and Ki. Based on test results, use the most optimal value for use PID control value Kp = 60, Ki = 0.005 and Kd = 0.5. By using the value of the achievement level will be faster and the value of the maximum error of 2.5% is still within the tolerance limits of 3%.