Elektron Jurnal Ilmiah (EJI - Department of Electrical Engineering, Politeknik Negeri Padang)
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Studi Kelayakan Sistem Pentanahan pada Gedung Teknik Elektro Universitas Andalas
Full text linkThe grounding system is one part of the electric power system that has an important role in flowing overcurrent from the electric power system to the ground due to electrical power system disturbances or lightning strikes that can endanger the building and its surroundings. This grounding system aims to protect humans, electrical equipment, and electrical installations from the danger of electrical short circuits. In compliance with official regulations, safety standards and according to general electrical installation regulatory standards (PUIL) to avoid the danger of lightning strikes in buildings, it is necessary to have grounding resistance value of less than five ohms and is made as small as possible. In this study, the measurement of grounding resistance seen from the depth of the grounding and the grounding resistance are arranged in parallel. The results of this study indicate that the parallel grounding resistance method produces a more significant reduction in the value of grounding resistance compared to the grounding resistance in a certain depth From the calculation results, the resistance value of the Electrical Engineering Building at Andalas University using a rod electrode with a diameter of 0.016 meters is 24.5 Ω with an electrode depth of 0.5 meters and at a depth of 1 meter a grounding value of 17.52 Ω is obtained. The deeper the depth of the electrode, the smaller the resulting resistance value, and installing a grounding system with the multirod method, namely arranging electrodes in parallel with a certain depth, obtains less resistance compared to not parallelizing the electrode
Alat Tanam Jagung dengan Kontrol Jarak Tanam dan Kualitas Biji Berdasarkan Ukuran
Full text linkA corn planting tool has been made by controlling spacing and seed quality based on size. The aim of this research is to make a prototype corn planting tool with plant spacing and seed quality control based on microcontroller controlled size. The research method starts from making a prototype, and measuring system performance. The results of measuring the performance of the tool are indicated by an error in the reading of the HC-SR04 ultrasonic sensor at a point of 2 cm with an error value of 10% which is close to the actual measurement value, while for reading the distance on the ultrasonic sensor at a point > 2 cm it can be said to be constant to the actual distance. The test results of the BTS7960 motor driver work according to the system work description and are able to control the pulse width modulation (PWM) and the direction of rotation of the DC motor properly. The 28BYJ-48 stepper motor can operate the seed rationing system properly and accurately to rotate the motor at an angle of 90o takes 30 seconds. Overall the tool can function properly. Suggestions for further research, can be added monitoring of corn planting results based on the Internet of Things (IoT)
Implementasi Sensor Getar dan PIR untuk Alat Pengaman Mobil Berbasis Internet of Things
Full text linkThe era of technology is developing rapidly along with the needs, various problems that arise can be overcome with technology. Internet Of Things (IOT) based car vehicle security system, using the NodeMCU ESP8266 microcontroller and a smartphone equipped with emergency safety features with accuracy and precision that support the realization of an interactive security system. This research starts from making the physical form of a car safety device with a control system using a microcontroller, programming the microcontroller and measuring system performance. Based on the test, it can be concluded, where this tool can function properly by combining hardware and software, namely the response time of the MCU Node sending messages to the owner's cellphone via telegram is 5.88 seconds. The security system can be monitored in real time without any distance limitations
Alat Pengukur Ketinggian Air Pada Landasan Pacu Pesawat Dengan Metode Image Processing
Full text linkAn aircraft accident are caused by several factors, one of which is the weather. High rainfall causes the runway to become slippery and wet. This will cause hydroplaning events on the plane. Hyproplaning is a skidding event caused by puddles of water on the runway. The maximum height of puddles on the runway is 3 mm. Currently, to measure the water level is still done in a conventional way and there is no sensor capable of measuring the water level in mm. To prevent accidents due to hydroplaning, a measuring device is needed that can monitor the water level in millimeters and has a long size range and is calibrated on the runway. This water level meter is made using a raspberry Pi 3 B+ miniPC. The stages in making this tool include hardware design and software design. Measurements were carried out using the image processing method with a Raspberry Pi camera and an optical liquid water sensor. The results of the measurements are displayed on the monitor screen with the VNC Viewer software. The measurement results using an optical liquid water level sensor are accurate with a relative error of 0% in each measurement, namely at 1 mm, 2 mm and 3 mm. For measurements using the image processing method, the average error generated is 2.3% at a height of 1 mm, 6.9% at a height of 2 mm, 3.3% at a height of 3 mm, 0.9% at a height of 4 mm and 0 .24% at 5 mm height
Pelacakan Perahu Masyarakat Yang Mengalami Kondisi Darurat Di Perairan Sipora Utara Kab. Kepulauan Mentawai Berbasis Internet Of Things
Full text linkTechnology in search and rescue has been growing at this time, especially in early detection systems. Basarnas as the leading sector in search and rescue, has used an early detection communication tool called Radio Beacon to quick response search and rescue for aircraft and ship accidents, and conditions that endanger humans. However, in its application in the field, this early detection system has not been touched by the local community, especially because the price is still relatively expensive and the socialization of the importance of safety itself has not been maximized in the community. From these problems, this paper designs a tracking device that works like a Radio Beacon where the switch will activate the Arduino device, GPS module and SIM800l module. The GPS module receives the location coordinates to be further processed by Arduino and sent using the SIM800l module to Firebase and notifications is received by the smartphone and the location can be monitored through an android application created using the MIT App Inventor platform. From the test results, it is found that the initial data transmission process starts from the switch is activated until the notification is received by the smartphone, a delay of 70 seconds occurs while in the process of repeating sending data there is a delay between 10-35 seconds from what has been set in the program looping every 50 seconds
Sistem Monitoring Horizontal Axial Wind Turbine (HAWT) Berbasis Internet Of Things
No full textWind power is one of the renewable energy sources used to generate electrical energy and is generally implemented in areas with large wind potential sources. The monitoring process of the power plant is usually carried out by the operator or user by recording the current, voltage, power, and wind speed produced by the wind turbine manually or conventionally. This direct monitoring process requires greater effort and takes a long time and the data obtained is less accurate. Therefore, a monitoring system is needed that is capable of remote monitoring and applies the concept of the Internet of Things (IoT) so that the current, voltage, power, and wind speed values can be obtained by users in real time through a prototype website designed. Some of the tests carried out in this study were testing the accuracy of sensor readings by looking for error values, sending data by looking for delay values, and user experience when using the website using the User Experience Questions (UEQ) method. The results showed that the monitoring system was able to provide information to users through the website with an average response time of 12.60 seconds, error in current readings of 3.51% and voltage of 0.22%. Then for the UEQ score, the website obtained a score above the average on the aspects of clarity, attractiveness, novelty, efficiency, accuracy and got a good score on the stimulation aspect
Pengujian Perangkat Lunak Aplikasi Studio Musik Nedd Audio Production Menggunakan Teknik Boundary Value Analysis
Full text linkNEDD Audio Production is a recording studio that provides on-site music or track recording services and track sales. The owner still uses the manual system for scheduling records and still uses social media for track sales. This causes inefficient owner performance. To create a website that provides booking services for recording schedules and purchasing tracks that can help the owner in placing the recording schedule and purchasing tracks efficiently. The design used to create a website using UML (Unified Modeling Language), which consists of Use Case Diagrams.. Meanwhile, the programming language uses PHP and MySQL as a database. The implementation of this website uses a third-party service, namely Midtrans, which is a payment gateway service provider website from Indonesi
Penggunaan Metode You Only Look Once dalam Penentu Pindah Tanaman Cabai Besar Ternotifikasi Telegram
Full text linkCapsicum Annuum L. is one of the vegetable commodities that have high economic value in fulfilling Indonesia's domestic needs with an area of chili harvest of around 11,400 ha per month. One of the stages in the cultivation of chili plants is the process of transplanting after sowing, namely the condition of the seeds having 4-5 permanent leaves. The impact if it is not immediately transferred is that the plant does not have enough adaptation period in completing its vegetative growth so that the plant quickly ages and enters the generative stage. Digital image processing can be applied to the identification and calculation of permanent leaves of large chili plants with a deep learning approach. One method that can be used is You Only Look Once version 4, which is the development of a convolutional neural network in object detection in the form of boundary box prediction results with a CSPdarknet53 backbone. The YOLOv4 model is integrated with the Raspberry Pi 4 Model B mini computer and sends notifications via the Bot feature in the Telegram application. The image dataset used is 135 pieces with 1409 samples for permanent class and 1945 samples for the young class. This system was successfully implemented with the identification and calculation accuracy value of 92.85% and the inference time value for the detection of one plant was 11.88 seconds and for sending notifications was 25.29 seconds
Rancang Bangun Alat Pemberi Makan Ikan Menggunakan Blynk Untuk Keramba Jaring Apung Berbasis IoT
Full text linkResearch has been carried out on the Design of Fish Feeding Equipment for IoT-Based Floating Cages. The purpose of this study was to design a fish feeder for floating net cages using ESP-32 CAM, ultrasonic sensor, RTC module and servo motor. The research stages start from hardware design, software design, testing and analysis. The results showed that the RTC Module was functioning properly according to the Blynk Application Time Input Widget. A notification will be sent to the smartphone when the remaining volume of fish feed is less than 20%. ESP32-CAM can send images and stored on webhosting the results of the images displayed are affected by the signal speed. Overall the tool can function well. For further research, you can add a weight sensor to find out how much feed is given in each specified time
Analisa Pengujian Kelayakan PMT 150 kV Bay Mandirancan I Berdasarkan Parameter Breaker Analyzer di Gardu Induk Sunyaragi
Full text linkElectricity is an energy that is very important in all aspects of people's life. PT. PLN (Persero) as a provider and supplier of electrical energy in Indonesia, is absolutely required to supply electricity to the community properly. One of the efforts to do this is to ensure the appropriateness and reliability of the equipment used in the electric power transmission system by carrying out routine testing and maintenance. The equipment that plays a vital role in the electric power transmission system is the Circuit Breaker (CB) because it functions as a mechanical switch used to cut off the flow of the load current which plays an important role when a disturbance occurs to protect other equipment from damage. Therefore, the reliability of this CB must always be maintained. In this study, tests were carried out four times on the CB 150 kV Mandirancan I contacts by measuring the synchronization of working time for open, close, reclose, and OCO (Open - Close - Open) contacts using a Breaker Analyzer measuring instrument. The test results show an anomaly in terms of the synchronization of the contacts, where one of the contacts works faster when it closes due to the longer pull of the motor than the other contacts. To overcome this, it is recommended to reset the Motor Run Limit Switch PMT so that the length of time the motor works is similar in all of its contacts