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Buletin Ilmiah Sarjana Teknik Elektro
Published by Universitas Ahmad Dahlan
ISSN : 26857936     EISSN : 26859572     DOI : 10.12928
Core Subject : Engineering,
Electrical & Electronics Engineering
Buletin Ilmiah Sarjana Teknik Elektro (BISTE) adalah jurnal terbuka dan merupakan jurnal nasional yang dikelola oleh Program Studi Teknik Elektro, Fakultas Teknologi Industri, Universitas Ahmad Dahlan. BISTE merupakan Jurnal yang diperuntukkan untuk mahasiswa sarjana Teknik Elektro. Ruang lingkup yang diterima adalah bidang teknik elektro dengan konsentrasi Otomasi Industri meliputi Internet of Things (IoT), PLC, Scada, DCS, Sistem Kendali, Robotika, Kecerdasan Buatan, Pengolahan Sinyal, Pengolahan Citra, Mikrokontroller, Sistem Embedded, Sistem Tenaga Listrik, dan Power Elektronik. Jurnal ini bertujuan untuk menerbitkan penelitian mahasiswa dan berkontribusi dalam pengembangan ilmu pengetahuan dan teknologi.
Arjuna Subject : -
Articles 6 Documents
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Search results for , issue "Vol. 4 No. 3 (2022): December" : 6 Documents clear
Design an Internet of Things-Based LPG Gas Leak Detection System Mustofa Mustofa; Abdul Fadlil
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.5572

Abstract

LPG currently plays a big role in human life, both in industry and households. However, since the existence of LPG, there have been many cases of fires caused by LPG gas leaks. Undetected LPG gas leaks can cause sparks and can trigger fires. Therefore, currently an LPG gas detection device is needed. The system designed in this study uses an MQ-6 sensor to detect LPG gas, and NodeMCU as a microcontroller. This system not only detects leaking gas, but can also provide alerts and information to the Blynk application on smartphones by utilizing the Internet of Things (IoT). System testing resulted in an error value in detecting gas of 9.52% and the distance between the system and the smartphone was 500 meters. The sensor can detect gas well when the distance between the gas and the sensor is no more than 10 cm. The system can provide information to the smartphone if a gas leak is detected and can provide alerts by turning on the buzzer and LEDs.
Automatic Liquid Filling in Deep Water Culture Hydroponic System Based on Water Level and TDS Meter Value Ahmad Faiz Al Hakam; Riky Dwi Puriyanto
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.6726

Abstract

Currently, the filling of nutrient fluids for hydroponic systems is still carried out manually or conventionally. In this study, an automatic liquid filling system was made in the DWC hydroponic system based on water level and TDS Meter values. The controlling process uses an Arduino Uno microcontroller. The sensor is used to perform readings of nutrient values using a TDS sensor, for the measurement of water level distances using an ultrasonic sensor HC-SR04. The 16x2 LCD is used to display distance values and TDS values. Meanwhile, to drain nutrient fluids using a 12V pump. The results of this study the system as a whole can carry out the process of filling nutrient fluids automatically when the water level distance is >3.5 cm or the TDS value <700 PPM. Meanwhile, if the water level distance is <3.5 cm and the TDS value is >700 PPM, the pump will turn off. The result of this study was that the ultrasonic sensor HC-SR04 got an average error value of 0.12%. TDS sensors get an average error value of 6.02%.
Character Translation on Plate Recognition with Intelligence Approaches Haris Imam Karim Fathurrahman; Chin Li-Yi
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.7161

Abstract

In recent years, the number of automobiles in Indonesia has expanded. This rise has a knock-on impact on street crime. On this problem based, a preventative road safety prevention system is required. This research contribution is to develop an efficient algorithm for detecting vehicle license plates. This study's technique incorporates artificial intelligence technology with character translation. Yolov3 and Yolov4 are the artificial intelligence systems employed in this study. The detection of objects in the form of license plates is the result of this approach. In artificial intelligence, object detection results are utilized as input for image processing. The image processing method is used to translate characters. Optical Character Recognition (OCR) is used to decode the characters in the image precisely. The artificial intelligence data training resulted in a 76.53% and 89.55% mean average precision (mAP) level. Using OCR, the system is capable of character translation. These results give an opportunity to develop more complex image-processing applications.
Design of One-Phase Inverter Using EGS002 with SPWM Nisfa Sri Ayu Kaliky; Son Ali Akbar; Ahmad Raditya Cahya Baswara
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.6567

Abstract

The more advanced the development of the technological world in Indonesia, the needs of the community in the use of electrical energy are also higher so that an alternative tool is needed that can produce a voltage source such as PLN. In this thesis, a 1-phase inverter will be designed that can produce output in the form of an AC voltage of 220 volts with a frequency of 50 Hz and has a good feedback voltage so that the inverter output voltage can be stable at an AC voltage value of 220 volts. The 1-phase inverter is made using a full bridge inverter circuit, the SPWM (sinusoidal pulse width modulation) signal is generated using EGS002 by ASIC (Application Specific Integreted Circuit), and the voltage correction transformer used has a maximum working power of 600 watts. According to the results of the no-load test the 1-phase inverter can produce an AC voltage on the output side of 220 to 230 volts with 50 Hz frequencys and the results of the load test show that the inverter has a good feedback voltage so that even when the input voltage drops, the inverter output voltage value is still above 220 volts.
Prototype of Automatic Sorting of Goods in Cosmetics Warehouse Aliim Muqaffi Siswanto; Muchlas Muchlas
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.6919

Abstract

One of the tasks of the warehouse as a vital support unit for the distribution process and inventory of goods is sorting. Especially for cosmetic warehouses. Product sorting in warehouses so far is still done manually which can cause negligence and take time when collecting stored product data. A storage system is the process of placing and acquiring goods and products to and from a specific location within an industrial plant or warehouse. To solve this problem, the warehouse needs an automatic sorting tool. This allows employees to easily record products stored in warehouses without using a large number of staff. The method applied to this tool is microcontroller-based automation which includes hardware design in the form of conveyor design, flow charts, and board layouts. Software design includes listing code, block diagram explanations and system flowcharts. Testing system working tools such as barcode scanning, servo angle, infrared sensor and conveyor. The items used as experimental samples totaled 9 pieces with the categories of facial wash, lipstick, and shampoo. Based on the tests that have been carried out, the prototype of automatic sorting of goods is already working as expected.
Chili Plants Soil Fertility Monitoring System Based on Internet of Things (IoT) Wahyu Prawoto; Anton Yudhana
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.5298

Abstract

Soil fertility is one of the main factors in cultivating chili peppers. Variables that need to be considered to support chili growth include soil temperature and pH. This study aims to monitor soil fertility using the DS18B20 temperature sensor and an Internet of Things (IoT)-based soil pH sensor combined with the Geographical Information System (GIS) algorithm. Ituses parameters of temperature values and soil pH values with geographic readings via GIS. The DS18B20 temperature sensor values and ground pH sensor are processed on the ESP8266 NodeMCU then displayed on a 20x4 LCD and sent to the ThingSpeak website in real time. Soil fertility testing is carried out in the morning and evening by comparing the measurement results of the DS18B20 temperature sensor and soil pH sensor with a standard tool, namely the 4in1Soil Survey Instrument. The results of soil fertility testing using the DS18B20 temperature sensor and soil pH sensor conducted in the morning obtained a temperature accuracy of 95.36% and a pH accuracy of 95.96%. Meanwhile, the results carried out in the afternoon obtained a temperature accuracy of 94.36% and a pH accuracy of 89.96%. The implementation of GIS in this study succeeded in mapping the fertility of good and bad soils.

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