Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

GEMA TEKNOLOGI

gema_teknologi
Website

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.

Arjuna Subject : -

Articles 166 Documents

10 11 12 13 14

RANCANG BANGUN SISTEM KENDALI ALAT PENYORTIR BARANG BERWARNA MERAH DAN HIJAU DENGAN SENSOR TCS230 BERBASIS PLC SCHNEIDER Tarigan, Agri Denada Br; Setiono, Iman
Gema Teknologi Vol 20, No 1 (2018): April 2018 - October 2018
Publisher : Vocational School Diponegoro University

Agri Denada Br Tarigan, Iman Setiono, in this paper explain that temperature regulation is one of the most important needs for the industry. Lots of processes and production are carried out under certain temperature conditions and free from interference. Industrial temperature controller is one of the basic equipment to meet these needs. On the market there are various types, specifications, and brands of temperature controllers, but have similarities with one another mainly lies in the basic functions of temperature regulation capabilities. This article describes the background of industrial temperature controllers principal, also covers control concepts, basic controller configurations, control methods, actuator equipment support, and examples of sensor parameter settings and controls on the Autonics TC4S series temperature controllers.

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

Muhammad Khoiru Syabibi, Arkhan Subari Â 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.Â 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.Â 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.Â 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.Ã–zcan, 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.Â

ANALISA KERETAKAN PADA KONSTRUKSI GELADAK UTAMA KM. ADRI XLIV Djazuli Saâ€™id, Solichin
Gema Teknologi Vol 16, No 4 (2012): October 2011 - April 2012
Publisher : Vocational School Diponegoro University

Solichin Djazuli Saâ€™id, in this paper explain that ship KM. XLIV Adri is the kind of cargo ship (General Cargo). The ship has been designed in accordance with the rules and regulations of the class (Bureau of Classification Indonesia). From the results of the survey method of research vessel, discovered the damage to construction on the main deck, the cracks on the fulcrum side deck fit the front room and deck beams are broken the back of the main deck. Thus causing the curvature of the floor deck and it needs to be a replacement / repair of components damaged by construction ensuring shipping safety. From the calculation results and field studies, construction damage caused by welding is not good, cutting the material that is not true and the use of payload on the main deck in excess of the permitted capacity. Key words: Cargo Ship , Construction Damages, Main Deck

ACR (AUTOMATIC CONTROL ROBOT) BERBASIS ATMEGA 8535 SEBAGAI APLIKASI MODEL ROBOT MENGGUNAKAN REL Setiawan, Arif; Subali, Subali
Gema Teknologi Vol 17, No 3 (2013): April 2013 -October 2013
Publisher : Vocational School Diponegoro University

Arif Setiawan, Subali, in this paper explain that a fixed rail track used as a railway line. Application of rail as a direct path not only to train. However, there are also robots that use rail movement path. Rail crossings are used as the robot is not made of steel, but a line. This robot uses a single rail line is black with a white stripe background of a width adapted to the sensor mounted on the robot. Photodiode sensor lines will be detected, and then transmitted to the microcontroller 8535 as the brain or the source of the instruction that has been programmed. 8535 will detect the sensor output and then process the data received to proceed to the Driver that is connected to the DC motor. The output of the microcontroller 8535 will also be displayed through the LCD as the display position of the sensor and input characters. As an added speed control robot 4x1 keypad which will give instruction in the form of characters into the Microcontroller. Keywords: Rail, Sensor Photodiode, Microcontroller 8535, DC Motor Driver, LCD, Keypad, DC Motor.

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

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 componentâ€™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.

ALAT PENGHITUNG BERAT BADAN MANUSIA DENGAN STANDART BODY MASS INDEX (BMI) MENGGUNAKAN SENSOR LOAD CELL BERBASIS ARDUINO MEGA 2560 R3 Dewantara, Dewantara; Sasmoko, Priyo
Gema Teknologi Vol 18, No 3 (2015): April 2015 - October 2015
Publisher : Vocational School Diponegoro University

Dewantara, Priyo Sasmoko, in this paper explain that a measuring instrument is a tool used by humans to help determine parameters such as height and weight. Most height and weight gauges used today still use simple and still conventional equipment. In addition, if manually, there are still frequent measurement errors that come from the measuring instrument itself or from the human. This happens because of inaccuracies in reading measuring instruments that lack precision or perhaps from the human factor itself. The purpose of this study was to create a digital height and weight automation system accompanied by displaying its ideal weight based on height. This system is built using Arduino as a system controller. The ultrasonic sensor is used as a measure of height. Load cell is used as a measure of weight. And a 20x4 LCD to display the output. From testing and analyzing the results of measurements of height according to the actual height, the results of measurements of weight have an error percentage of 0.53% - 2.77%. The system determines the ideal or not body weight based on BMI.Â Keywords: 20x4 LCD, Load Cell Sensor, Arduino.ReferencesFogaswara, Eka. 2013. Prinsip Dasar Kelistrikan dan konversi energy untuk SMK/MAK. Bandung: CV ARMICO.Massimo dkk, Arduino/Genuino Mega 2560. 28 Juli 2015. Â https://www.arduino.cc/en/Ma in/ArduinoBoardMega2560. Diakses pada 28 Juli 2015.Anonim. Sensor. 5 September 2015. http://id.wikipedia.org/wiki/sensor. DiaksesÂ pada 5 September 2015Anonim. HX711 Weight Scale ADC Modul. 6 September 2015. http://www.vcc2gnd.com/Diakses pada 6 September 2015Arifai, Samsul. Dkk, 2014, Rangkain Catu Daya. http://s3.amazonaws.com/academia.e du.documents/ DiaksesÂ pada 24 Agustus 2015Malvino, Prinsip-prinsip Elektronika, Buku satu, Salemba Teknika, hal 66Anonim. Catu daya. 6 September 2015. http://profil.widodoonline.com /Elektronika/komponen/praktik um/teori-dasar-catu-daya.html

SIMULASI SISTEM EKSITASI UNTUK KONDENSATOR SINKRON PADA PEMBANGKIT LISTRIK TENAGA ANGIN Sukmadi, Tejo
Gema Teknologi Vol 16, No 4 (2012): October 2011 - April 2012
Publisher : Vocational School Diponegoro University

Tejo Sukmadi, in paper a model of Â wind energy power generation excitation system will be simulated. TheÂ focuse was on the modelling and parameters optimization of the DC1A type excitation systems for synchronous condenser as voltage regulation on the power plant. Excitation system optimization is made by using genetic algorithms method. The parameters optimization should have the optimal combination and the voltage regulation of wind energy power plants model find the best vale when there is a change in the wind speed. The simulation and analysis found that systems with excitation system parameterized combination of genetic algorithms experiment using crossovers opportunities 0.6 and mutations opportunities 0.032, which Ka = 297.2350, Ke = 0.6162, Kf = 0.01, Ta = 0.01, Te = 0.01 and Tf = 0.6278 is the best combination of excitation parameters obtained. By generating the 115.6604 ITAE value, over shoot 1,54%, steady state 0,44 s, the smallest voltage value after wind speed change is 0.9957 pu and the largest voltage value after wind speed change is 1.0025 pu. Keywords : wind energy power generation, excitation system, synchronous condenser, genetic algorithms.

KWH METER DIGITAL DENGAN SISTEM PRABAYAR BERBASIS IC BL0932 DAN MIKROKONTROLER 38024 Lukito, Bimo Kristianto; Winarno, Heru
Gema Teknologi Vol 17, No 2 (2013): October 2012 - April 2013
Publisher : Vocational School Diponegoro University

Bimo Kristianto Lukito, Heru Winarno, in paper prepaid digital KWH meter based on IC BL0932 and microcontroller 38024 explain that an analog meter kWh used by PLN placed in homes. Has several drawbacks, including the effects of age and weather making its numbers less opaque and can be seen. Read error resulted in the use of electrical power and recording electricity bills electricity that could harm users. To overcome these problems made â€‹â€‹a digital kWh meter with prepaid systems, with the advantages of digital display are lit and large enough. The system replaced the way payments are prepaid, by using an electronic prepaid card replacement bills. Digital kWh meter is controlled by a microcontroller with type 38024 and type IC BL0932 uses a function to read the voltage and current (with load reaches 1300 watts) to determine the energy used in home installations using the LCD as a data viewer that the amount of electrical energy used at home . The payment system by purchasing an electronic voucher, containing a digital scale (functioning as a pulse) as a comparison of the amount of energy used. This system automatically decides if the magnitude of the voltage reaches a value of 0. Keywords : digital kWh meter, IC BL0932, microcontroller 38024

MINIATUR PENGAMAN TOWER TERHADAP PENCURI BERBASIS MIKROKONTROLER ATMEGA8 MENGGUNAKAN SENSOR PIR (PASSIVE INFRA RED) DAN LIMIT SWITCH DENGAN SISTEM SCADA Utami, Dyah Palupi; Subali, Subali
Gema Teknologi Vol 17, No 4 (2014): October 2013 - April 2014
Publisher : Vocational School Diponegoro University

Dyah Palupi Utami, Subali, in this paper explain that information security is a very important thing, therefore we need a system that can identify the users who will be accessing an information system security. SCADA stands for Supervisory Control And Data Acquisition meaningful data acquisition and supervisory control according to the indication. SCADA is not a complete control system, but more focused on the level of supervision. Thus, SCADA is a software package that is positioned to hardware connected to the system, generally through a microcontroller. PIR sensors and touch sensors. Where the sensor will detect the presence of human presence and sends a signal to the microcontroller. Indicator lights and an alarm will sound. The microcontroller will send a signal to the PC. In this study, applied in the security tower using a computer to pengkontrolan system as well as a display monitor and a monitoring system security information on this tool. Safety and time efficiency into consideration in making this tool, where the use of an identification system is needed. This research is focused on developing the design and simulation of SCADA systems used in information security. Keywords: tower, microcontroller, PIR sensors, SCADA

PEMBUATAN KWH METER DIGITAL 1 FASA BERBASIS ARDUINO MEGA 2560 Afria B, Muhammad Gifar; Winarno, Heru
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Muhammad Gifar Afria B, Heru Winarno, in general, a digital kWh meter that can be used to monitor the cosphi value is a 3 phase kWh meter. For 1 phase kWh meters it can only be used to monitor voltage and load usage. In this tool a 1 phase digital kWh meter prototype is made that can be used to monitor cosphi. Cosphi can be compared by comparing voltage and current signals using LM 393 IC. The reading results from IC LM 393 are compared with EX-OR IC so that high signal is obtained when voltage and current have phase difference only. The output of the EX-OR IC is inserted into Arduino to be read and calibrated so that it can be displayed on the LCD. for the process of reading the current magnitude used ACS 712 current sensor, while for the voltage sensor reading step down transformer is used with the principle of voltage divider. In this system, the Arduino MEGA 2560 microcontroller is used as a sensor reading processor that is programmed using the C ++ language so that it can be displayed on a 16x4 LCD. This digital KWH is also equipped with overcurrent protection using a 5vdc relay that is set to work with a driver in the form of an NPN transistor program on Arduino MEGA 2560. In its appearance this tool can provide information in the form of current, voltage, cosphi and the amount of power used in units of time and has been converted into units of rupiah. This tool can help read electrical instrumentation for homes that are still using analog KWH meters. In the process of measuring this device has an error rate of 0% for current reading, 0.4 for voltage reading, 0.07 for cosphi reading and 4.5% for kWh reading.

Page 12 of 17 | Total Record : 166

10 11 12 13 14

Filter by Year

2010 2022

Filter By Issues

All Issue Vol 21, No 4 (2022): October 2021 - April 2022 Vol 21, No 3 (2021): April 2021 - October 2021 Vol 21, No 2 (2021): October 2020 - April 2021 Vol 21, No 1 (2020): April 2020 - October 2020 Vol 20, No 4 (2020): October 2019 - April 2020 Vol 20, No 3 (2019): April 2019 - October 2019 Vol 20, No 2 (2019): October 2018 - April 2019 Vol 20, No 1 (2018): April 2018 - October 2018 Vol 19, No 4 (2018): October 2017 - April 2018 Vol 19, No 3 (2017): April 2017 - October 2017 Vol 19, No 2 (2017): October 2016 - April 2017 Vol 19, No 1 (2016): April 2016 - October 2016 Vol 18, No 4 (2016): October 2015 - April 2016 Vol 18, No 3 (2015): April 2015 - October 2015 Vol 18, No 2 (2015): October 2014 - April 2015 Vol 18, No 1 (2014): April 2014 - October 2014 Vol 17, No 4 (2014): October 2013 - April 2014 Vol 17, No 3 (2013): April 2013 -October 2013 Vol 17, No 2 (2013): October 2012 - April 2013 Vol 17, No 1 (2012): April 2012 - October 2012 Vol 16, No 4 (2012): October 2011 - April 2012 Vol 16, No 3 (2011): April 2011 - October 2011 Vol 16, No 2 (2011): October 2010 - April 2011 Vol 16, No 1 (2010): April 2010 - October 2010 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota semarang,

Jawa tengah

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota semarang, Jawa tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota semarang,

Jawa tengah

INDONESIA