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GEMA TEKNOLOGI

gema_teknologi
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Published by Universitas Diponegoro

ISSN : 08520232 EISSN : 2656582X DOI : -

Core Subject : Science,

Computer Science & IT

Gema Teknologi Journal (pISSN : 0852-0232, eISSN : 2656-582X) is an open access journal published by Vocational School, Diponegoro University, Indonesia. Gema Teknologi publishes articles from various engineering disciplines (the results of original scientific research or new scientific studies of literature). Editor receives articles both in English and Indonesian. Gema Teknologi Journal is published 2 (two) times a year, on April and October.

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Articles 166 Documents

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SIMULATOR GENERATOR HARMONIK Sasmoko, Priyo
Gema Teknologi Vol 16, No 3 (2011): April 2011 - October 2011
Publisher : Vocational School Diponegoro University

Priyo Sasmoko, in this paper explain that the need of electric power recently progressively complex, not only the requirement of availability of electricity, but the quality of energy have become prime facie demand. Studies of electricity quality have been conducted by many experts, one of them is about harmonic. Harmonic represent waving current or tension which is tension distortion at electric power system mains so that can result unideal waveform. The study of harmonic required appliance or obyek which need to be checked. In this research Simulator Generator Harmonik is madeÂ a harmonic generator module which can deputize the appliance or obyek yielding harmonic with harmonic component and the THD which can be varried. This module works by dividing one cycle of mains become some slots so it can be got harmonic component as desired. To change the THD,a variation of linear load is used so that the ratio of non-linear load current can be varried. Keywords : Simulator, Harmonic component, THD

SISTEM KEAMANAN RUMAH OTOMATIS MENGGUNAKAN SENSOR PIR, SENSOR SUHU, SENSOR GAS YANG TERHUBUNG DENGAN TELEPON SELULER BERBASIS MIKROKONTROLER ATMEGA8 DAN MIKROKONTROLER ATMEGA162 DENGAN BACKUP DAYA Sekar A, Khanina Rizki; Subali, Subali
Gema Teknologi Vol 17, No 2 (2013): October 2012 - April 2013
Publisher : Vocational School Diponegoro University

Khanina Rizki Sekar A, Subali, in paper Auto home security system using PIR sensor, temperature sensor, gas sensor connected with mobile phone based on microcontroller atmega162 and atmega8 with backup power explain that given the innumerable acts of criminality is happening around us, especially that threaten the security of residence so that the sense of security and peace becomes expensive. Along with the development of increasingly advanced technology make things easier including the automated home security systems are equipped with sensors, microcontrollers used as modem wavecom regulator as well as an information medium. Where in this system, every room in the house mounted sensor that functions to monitor the condition of the house. The sensor used is a PIR sensor for motion detection, temperature sensor to determine the room temperature and gas sensors to detect gas leaks. Results of the work detection sensor will be processed by a microcontroller ATmega8 then forwarded to the ATMega162 microcontroller via a serial port. Further information will be sent to the mobile phone via modem wavecom homeowners, so homeowners can know the condition of the house. The system is equipped with a battery backup, intended for home security control system to keep working in case of power outage suddenly. Keywords: PIR Sensor, Temperature Sensor, Gas Sensor, Microcontroller, Battery Backup

PERANCANGAN SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA) MENGGUNAKAN SOFTWARE CX-SUPERVISOR 3.1 PADA SIMULASI SISTEM LISTRIK REDUNDANT BERBASIS PROGRAMMABLE LOGIC CONTROLLER (PLC) OMRON CP1E NA-20-DRA Almuhtarom, Almuhtarom; Sasmoko, Priyo
Gema Teknologi Vol 18, No 2 (2015): October 2014 - April 2015
Publisher : Vocational School Diponegoro University

Almuhtarom, Priyo Sasmoko, in this paper explain that the existence of electrical energy for human needs can not be separated, the electrical energy used by all humans on this planet of small-scale (household) to large-scale industry. Demand the amount of electrical energy and the quality of the electricity transmission system has increased over time. Disruptions in electricity transmission system could be fatal for the electrical components or the operating loss in an industry. SCADA is proposed to accommodate this problem. SCADA is able to monitor and control the disturbances in electrical systems redundant. The purpose of this final project is to simulate a SCADA system to eliminate redundant electric power transmission network failures such as open-circuit, short circuit, and overload that can be controlled directly from the plant or via an interface on the computer. Ladder diagram programming languages â€‹â€‹used to design the PLC system. Hardware and software to support this thesis, such as plant redundant electrical systems, Omron PLC CP1E NA-20-DRA, Laptop, CX One 9.3 software for programming the PLC and the CX Supervisor 3.1 for building HMI. The test results indicate that the current sensor can be used to detect if an interruption occurs in the form of overload and short circuit simulate disturbances. Plant redundant electrical system can be monitored and controlled through input-output of the plant, computer interface, and the World Wide Web. There is a relay on a plant that can connect to the electricity grid cut power lines when an interruption occurs. If an interruption occurs in the form of an open circuit, short circuit or overload, alarm and disturbance indicators will be active. Keywords: SCADA, PLC, open circuit, short circuit, overload

SISTEM KONTROL SUHU AIR MENGGUNAKAN PENGENDALI PID. DAN VOLUME AIR PADA TANGKI PEMANAS AIR BERBASIS ARDUINO UNO Megido, Adiel; Ariyanto, Eko
Gema Teknologi Vol 18, No 4 (2016): October 2015 - April 2016
Publisher : Vocational School Diponegoro University

Adiel Megido, Eko AriyantoÂ in this paper explain that the temperature control system on water heaters that use electric heaters, generally uses ON-OFF voltage control. Apart from this system being less efficient in using electricity, the limited range of voltage settings provided also lacks the output accuracy value required by the control system. So that for some applications it can cause a response to the temperature control system that oscillates. Another alternative in controlling the heating voltage is by using the PID control method (Proportional - Integral - Derifative), this method provides a wider range of voltage settings, so that it can provide the output accuracy value needed by the control system, thus making it possible to obtain system responses finer (minimum oscillation amplitude). In addition to problems with the temperature control system, the water volume control system in the water heater tank generally still uses probes that are installed at certain levels. The limitations in reading each change in height / volume of water causes the system output to be less linear (discrete). To produce linear readings and outputs in each change in water volume, a voltage divider can be used. In this final project design will use an electric water heater tank as a medium to determine the ability of the PID controller to control water temperature according to the set-point and control the height / volume of water in the tank using a voltage divider.Â Keywords : PID (Proporsional â€“ Integral â€“ Derifatif), Berosilasi, Set-pointReferencesMalvino, Albert Paul. 1981. Prinsip-prinsip Elektronik edisi kedua. Jakarta: Erlangga.Gunterus, Frans. 1994. Falsafah Dasar : Sistem Pengendalian Proses.Jakarta:Elex Media KomputindoEfendy, Marwan.n.d. Bab 1 Sistem Pengendalian. Surakarta: Universitas Muhamadiyah SurakartaBolton, W. 2009. Sistem Instrumentasi dan Sistem Kontrol. Jakarta:ErlanggaOgata, Katsuhiko. 1996. Teknik Kontrol Automatik Jilid 1-2, Diterjemahkan oleh Ir. Edi Laksono. Jakarta : Erlangga.sPetruzella, Frank D. 1996. Elektronika Industri. Yogyakarta: Andi Yogyakarta.Rashid, H Muhammad. 1999. Elektronika Daya Jilid 1. Jakarta: Prehalindo.Michael Tooley, BA. 2003. Rangkaian Elektronik Prinsip dan Aplikasi Edisi kedua. Jakarta : Erlangga.Bishop, Owen. 2004. Dasar-Dasar Elektronika. Jakarta : Erlangga.Majid, Saifulloh Agung. 2009. Pengontrolan Temperatur Menggunakan Metode Kontrol PID Berbasis Mikrokontroler AT90S8515. Semarang: Jurusan Teknik Elektro Fakultas Teknik Universitas Diponegoro.Surono, dkk. 2009. Bahasa Indonesia Untuk Perguruan Tinggi. Semarang: Farindo Press.Laksono, Suryo Krido, Sumardi, dan Aris Triwiyatno. 2010. Pengaturan Sudut Fasa Berbasis Logika Fuzzy Untuk Sistem Pengaturan Temperatur. Semarang: Jurusan Teknik Elektro Fakultas Teknik Universitas Diponegoro.Firsyari, Akhmad Salmi, Purwanto, M Aziz Muslim. 2013. Sistem Pengendalian Suhu Pada Proses Distilasi Vakum Bioetanol Dengan Menggunakan Arduino. Semarang: Jurusan Teknik Elektro Fakultas Teknik Universitas Diponegoro.Azaria Mutia Suriatmadja. 2013. Modul Kontrol Temperatur Air Berbasis PID Menggunakan Matlab Simulink. Semarang: PSD III Teknik Elektronika Jurusan Teknik Elektro Politeknik Negeri Semarang

PEMBERDAYAAN INDUSTRI KECIL KERIPIK PISANG DALAM UPAYA MENUJU INDUSTRI MANDIRI Pudjihastuti, Isti; Supriyo, Edy; Hartati, Retno
Gema Teknologi Vol 16, No 2 (2011): October 2010 - April 2011
Publisher : Vocational School Diponegoro University

IstiPudjihastuti, Edy Supriyo, Retno Hartati, in this paper explain that the development of micro industries, in banana chip Â micro industry to the Â member of group which is culinary enterprise Pemalang speciallized is give suitable solution to Â consument for giving natural culinary with high nutrition value independently and cheap. The development of microÂ industries is circular activity that consist of briefing about the use of gelatse system in banana chip production by naturally and independently, the suitable tachnique of banana chip production, production of furnace completely by steack as pilot plan, assitancy when the producer makes snack in gelatse system. Moreover, the taste of snack more delicious, the market bigger. Â Key words: micro industries banana chip

ALAT PENGGERUS OBAT OTOMATIS BERBASIS MIKROKONTROLER AVR ATMEGA 16 DISERTAI TAMPILAN LCD Noviana, Eva; Manan, Saiful
Gema Teknologi Vol 17, No 1 (2012): April 2012 - October 2012
Publisher : Vocational School Diponegoro University

Eva Noviana, Saiful Manan, in paper otomatic drug muller based on ATMEGA16 mikrokontroler with LCD monitor explain that in a pharmacy a pharmacist made â€‹â€‹in accordance with the prescription drugs that have been recommended from the doctor to the patient. The drug is sometimes exist in the form of capsules, so the pharmacist must erode the drug first. Usually the process is still done manually which is less saves time. Because in today's tools - the tools are completely automated. With Automatic Tool muller Drugs Accompanied ATmega16 AVR Microcontroller Based LCD Display is possible to ease the burden on pharmacists, where the application is made up of four series, namely a series of push buttons, ATmega16 AVR microcontroller series, LCD series, muller motor driver circuit. Push button as input in the form of a pushbutton. ATmega16 AVR microcontroller as the central control input and outputan the grinding process medication. LCD ( Liquid Crystal Display ) as output capable of displaying output characters , either letters or numbers. Muller motor driver as government Universal AC to drive the motor. As for writing the program used in this application using C language C language is the software that becomes part of the system which are programs that regulate the working of the microcontroller ATmega16 and overall hardware (hardware ) is connected to the microcontroller ATmega16. Keywords : ATmega16 AVR microcontroller, LCD, muller motor driver.

APLIKASI PROGRAMMABLE LOGIC CONTROLLER (PLC) OMRON CP1E NA20 DRA DALAM PROSES PENGATURAN SISTEM KERJA MESIN PEMBUAT PELET IKAN Dewi, Tiar Kusuma; Sasmoko, Priyo
Gema Teknologi Vol 17, No 4 (2014): October 2013 - April 2014
Publisher : Vocational School Diponegoro University

Tiar Kusuma Dewi, Priyo Sasmoko, in paper application of programmable logic controller (PLC) omron CP1E NA20 DRA in control system of fish pellets builders engine explain that better known as PLC or Programmable Logic Controller is an electronic apparatus that works digitally , has a programmable memory , save the commands to perform specific functions such as logic , timing , counting and arithmatik to control different types of machines or processes through modules input / output analog or digital . PLC will run the display module according to the mnemonic code is entered into the PLC via the Programming Console or the CX - Programmer programs . However , here are discussed PLC using the CX - Programmer . OMRON PLC used is CP1E NA20 DRA . PLC works by observing input ( via sensors related ) , then the process and take action as needed , ie turn on or turn off the output ( logic 0 or 1 ) . Users create a program that will then be executed by the PLC in question , so that the tool Fish Pellet Machine Manufacturers Automatic will work as desired . Keyword : OMRON PLC CP1E NA30 DRA , the CX - Programer

SIMULASI SISTEM PERINGATAN DINI KETINGGIAN AIR SUNGAI DENGAN MENGGUNAKAN ALARM DAN SMS GATEWAY BERBASIS AT-MEGA 16 Firdaus, Muhammad; yuniarto, yuniarto
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Muhammad Firdaus, Yuniarto, in this paper explain that river is one of the important and supporting places for human life, some uses of the river include supporting industrial activities, tourism and much more, besides that many in some river function sites are used as dams for use as an area of electricity generation or just for control water content, but from rivers also natural disasters can occur, which is like a flood caused by overflowing river water The alert system will flood from overflowing rivers until now it cannot work automatically to determine the river's water level. This causes the average local population not to know when the river surface will overflow. In this study a flood detection system was designed that works automatically by knowing the level (level) of the river's water level In designing this tool, the system will be made on the basis of the Atmega 16 microcontroller, where as an input electrodes will be used as detection of water level, and the output will be an alarm with a certain type of sound that adjusts the water level. destination number in the form of notification of the condition of the river water level to be detected.

EVALUASI KINERJA BANGUNAN AKIBAT PENGARUH GEMPA RENCANA PADA STRUKTUR GEDUNG 3 LANTAI BERDASAR SNI 03-1726-2003 Christiawan, Ignatius
Gema Teknologi Vol 16, No 1 (2010): April 2010 - October 2010
Publisher : Vocational School Diponegoro University

Ignatius Christiawan, in this paper explain that In effort fulfill requirement the well building infrastructure, safety of building user such as building avalanche damage as result of earthquake is principal priority. Due to user safety to building avalanche as result of earthquake then it was issued the Procedure of Earthquake Endurance Planning SNI 03-1726-2003 that regulates of planning, build or operates a building. Problem emerge at the building which have the old regulation plan, so it was need evaluation based on the new regulation. Evaluation is conducted at the 3 floor laboratory and lecturing building. Research was focused on performance evaluation of structure on existing condition relate at regulation of the Procedure of Concrete Structure Calculation for the SNI 2847-2002, application for earthquake based on SNI-1726-2002. SAP 2000 is used to analyze the pushover to obtain the building ductility value and the reduction factor value (R) from the building. The result of material test was obtained foâ€™ existing 17 Mpa and fy existing 390 Mpa. The result of structure performance evaluation was obtained the service limit performance and the building unlimited performance fulfilling condition SNI â€“ 1726 â€“ 2002. Keywords: plan earthquake, evaluation, safety.

RANCANG BANGUN PROTOTIPE SISTEM KENDALI IRON REMOVAL FILTER (IRF) PADA UNIT PENGOLAHAN AIR BERSIH BERBASIS PLC Karyadi, Kukuh; Suseno, Jatmiko Endro
Gema Teknologi Vol 20, No 2 (2019): October 2018 - April 2019
Publisher : Vocational School Diponegoro University

Kukuh Karyadi, Jatmiko Endro Suseno in this paper explain that Water is a necessity of life that is very important for mankind. The availability of clean water has been sought to be fulfilled in various ways. One of them is by making a clean water treatment plant that can process water that is not yet suitable for consumption to be more feasible and ready to be consumed for everyday life. The operation of water treatment plant is still manually operated such as in the Iron Removal Filter (IRF) control system so that the processing is not easy to operate. To facilitate the operation of a clean water treatment unit, a control system based on a Programmable Logic Controller (PLC) is created on the Iron Removal Filter (IRF) processing unit.Â Control system consisting of PLC, relay circuit, power supply and Human Machine Interface (HMI), works to control the clean water processing unit including controlling the process on the IRF automatically. Also made a prototype of a water treatment plant consisting of an aerator unit, an IRF unit, a storage tank, several pumps and several control valves to be controlled by the control system in operation. The control system uses PLC as a control center because PLC is a controller that is simple, easy to program and very reliable as already widely used in the industrial world. The PLC brand used is Omron because it is cheap, reliable and has software named CX-Programmer which is easy in programming. The control system uses laptop computer as an HMI in the operation. HMI uses VTScada software and is connected to a PLC using OPC CX-Server software. The control system that is made can control the clean water processing unit in the form of a prototype. Operation on HMI is so easy and has a very attractive appearance. So it is highly recommended to be used in the actual clean water treatment unit

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