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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 6 Documents

Search results for , issue "Vol 19, No 3 (2017): April 2017 - October 2017" : 6 Documents clear

RANCANG BANGUN ALAT PEMANTAUAN PENGATURAN KECEPATAN PUTAR MOTOR DC POWER WINDOWS BERBASIS PLC PANASONIC MENGGUNAKAN HUMAN MACHINE INTERFACE (HMI) Anarwati, Agustin; Setiono, Iman
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Agustin Anarwati, Iman Setiono, today human life is very rapidly developing, one of them in the field of technology as time advances. This requires the creation of ideas to make a variety of equipment that is more practical and more reliable in meeting needs. In the industrial world today, most equipment uses PLC as a controller for various existing equipment, while the Human Machine Interface (HMI) is used to simplify monitoring existing equipment. In the automotive world, the power windows system is part of the body's electrical circuit which aims to make it easier for motorists to operate car windows. The driver can adjust the work of the power windows through a switch. When the driver presses the switch then the motor power window will rotate and will make the window work both open and close. The type of motor used in the power window system is a DC motor. One of the features of this DC motor is its speed can be controlled easily. In this case, I tried to make the design of the monitoring device setting the DC power speed of the windows power using PLC and HMI as monitors and controllers for operating the DC power windows rotating speed to make it easier, the speed can be adjusted through the output voltage from the PLC to the driver, starting from 0 VDC up to 5 VDC. if the voltage is 5 VDC then the motor will rotate with a maximum speed of 100%, whereas if given a 2.5 VDC input, the motor speed will be half of the 5 VDC rotational speed.

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.

IMPLEMENTASI SCADA UNTUK MONITORING DAN CONTROLING SERTA KOORDINASI SISTEM PROTEKSI GARDU INDUK SISTEM 1,5 BREAKER PADA GARDU INDUK TEGANGAN EKSTRA TINGGI BERBASIS ARDUINO MEGA 2560 DENGAN TAMPILAN HMI Gumelar B, Muhammad Adi; Ariyanto, Eko
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Muhammad Adi Gumelar B, Eko Ariyanto, SCADA is one tool that can monitor and control the system at the substation and can coordinate the protection system area when a disturbance occurs. SCADA monitors the device continuously. This paper is to understand Differential protection areas, CCP, Buspro, and CBF that work when there is interference, namely internal and external interference by applying SCADA as its coordination. 12V DC relay is used as PMT, ACS712 as CT, and Ethernet Shield as Modbus to connect Arduino Mega 2560 with SCADA. Arduino Mega 2560 functions as a controlling center of input and output. The input used is the ACS712 sensor as a detector of the current flowing in the circuit. The Arduino Mega 2560 output signal will be sent to SCADA using an Ethernet Shield and router. Status of substations 1.5 breakers can be monitored with HMI from anywhere by using the SCADA application. In the event of a disturbance, each ACS712 will start reading the current changes and will be processed by Arduino Mega 2560, so that it can determine the protection area that works and trip the relay, SCADA will automatically record disturbances and give an alarm to occur by turning on the protection LED and sounding buzzer alarm.

RANCANG BANGUN MEMONITOR ARUS DAN TEGANGAN SERTA KECEPATAN MOTOR INDUKSI 3 FASA MENGGUNAKAN WEB BERBASIS ARDUINO DUE Wilutomo, Resnu Mauliyana Mukti; Yuwono, Teguh
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Resnu Mauliyana Mukti Wilutomo, Teguh Yuwono, 3 phase induction motor must work well and safely. Many types of interference have the potential to interfere with motor performance or even damage the motor itself, including due to power instability which includes imbalance between phase voltages and more phase currents. Monitoring an industrial activity especially monitoring the protection system is very important, it is intended that the disturbance that occurs in the 3 phase induction motor can be analyzed for the value and type of interference. Rapid technological development requires a monitoring system that is practical, fast and accurate. Sensors installed on this device are current sensors, voltage sensors, and speed sensors. The read, current, voltage and speed will be used as input signals to Arduino using the ADC (Analog to Digital Converter) process, Arduino programming uses C ++ language. ESP8266 wifi module) will upload the data from the ADC (Analog to Digital Converter) process to the database which is then displayed on the web using the available internet network. The web programming language used is PHP. This tool makes it easy to monitor a 3 phase induction motor because it can be done anytime and anywhere. There was a difference of Â± 0.24A between the Tang Ampere measuring instrument and reading on the web. A Â± 4V difference occurs between the Multimeter measuring instrument with readings on the Web. The maximum speed of the 3-phase induction motor with no load is 22Rpm between the tachometer gauge and the web display.

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.

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

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%.

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