Jurnal Rekayasa Elektrika
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Analisis Pengaruh Waktu Latensi Terhadap Akurasi Sistem SCADA Bacaan Metering Listrik Waktu Nyata Melalui Jaringan Internet
Get PDFSCADA (Supervisory Control and Data Acquisition) system of electricity metering using the internet network aims to monitor electrical energy remotely by utilizing internet services. The system consists of a meter that measures electric quantities acquired by a server located close to the meter. The client reads data acquired by the server through the internet network. The use of internet networks for data transmission generally results in latency time, which affects the validity of the data read by the client, resulting in reduced cumulative power calculation accuracy. In this article, energy calculations using current, voltage and power factor data on the client are compared with the energy value calculated by the power meter. Errors that occur are used to calculate the accuracy of the system. The experiment resulted in latency times ranging from 110 ms - 11219 ms with an average of 572.3025 ms with valid data ranging from 93% of population data and accuracy values ranging from 99.2974% to 99.8648%. The resulting accuracy is within the ANSI C12.20 standard
Sistem Monitoring Kolesterol Melalui Iris Mata dengan Metode Pengolahan Citra
Get PDFEarly detection to determine the presence or absence of cholesterol in the body is a necessity for everyonewho wants to live healthy. Many diseases can be caused by the presence of cholesterol such as heart disease, stroke,nerve disorders, kidney problems, hypertension, and etc. Therefore, cholesterol detection must be done regularly.This study discusses about the cholesterol detection system through the iris eyes using image processing andmonitoring progress in continously. Detection of cholesterol can be observed with Arcus Senilis or a gray ring inthe iris eyes. Tests carried using 15 samples which cholesterol identifed. The process of image processing consists ofimage acquisition, sharpening, segmentation, convert grayscale and binary images. Cholesterol can be identify withdifference between pixel values 0 (black) and pixel values 1 (white) in binary images. Research data will be storedin an Excel format database with adding some user data. From the test, results analysis carried the try and errorthreshold method using values of 80, 100, 150, and getting an accuracy of 87%, 73%, and 33%. Besides, monitoringcholesterol can be carried using a system interface and database with adding the required data and can display iton excel
Pengukuran RSSI Jaringan Sensor Nirkabel Berbasis ZigBee pada Berbagai Topologi
Get PDFIn order to get a good performance from a wireless sensor network, it is necessary to measure parameters of the network. RSSI (Received Signal Strength Indicator) is one of the network parameters that measure the signal strength received by a radio receiver in communication module. In this study the RSSI measurement experiment was performed in a wireless sensor network with the ZigBee protocol. Measurements were accomplished in three topologies, i.e. point-to-point, star, and mesh, both indoor and outdoor scenarios. Indoor measurements are carried out within the laboratory with concrete wall partition, while outdoor measurements are carried out in open space with the line-of-sight (LOS) conditions. XCTU software is used to measure RSSI measurements, by sending 100 data packets of 64 bytes with 1 second delivery intervals. Results show that the farther the data transmission distance, the RSSI value relatively decrease due to obstacles and reduced radio signal strength. While, in the mesh topology the addition of a router will also cause a slightly increase in the RSSI value
Perancangan Sistem Pemantauan Lokal dan Jarak Jauh bagi Panel Surya
Get PDFSolar photovoltaic monitoring system can be directly conducted locally for the experimental purposes. However, indirect or remote monitoring is also needed since the solar panel are often installed in a a high place, rural location, or remote area. This study offers a dual solar panel monitoring system i.e. local and remote. Local monitoring system consists of voltage, current, temperature and light intensity sensors that were integrated in a kit called PVmeter. The data in the local monitoring system were displayed on a LCD or on a PC monitor using data logger. While in the remote monitoring system, the data were uploaded to the internet and displayed on Thinkspeak website hence the data are accessible whenever and wherever needed. In the local system, monitored data were successfully displayed on *.txt file format for every 5 minutes. While in the remote system, the data were successfully displayed on Thinkspeak website with a mean transfer rate of 52.5 seconds
Pendeteksian Harmonisa Arus Berbasis Feed Forward Neural Network Secara Real Time
Get PDFThe development of power electronics converters has been widespread in the industrial, commercial, andhome applications. The device is considered to produce harmonics in non-linear loads. Harmonics cause a decreasein power quality in the electric power system. To prevent a decrease in power quality caused by harmonics inthe power system, the detection of harmonics has an important role. Therefore, this paper proposed feed forwardneural network (FFNN) for harmonic detection. The design of harmonic detection device is designed with a feedforward neural network method that it has two stages of information processing, namely the training stage andthe testing stage. FFNN has input harmonics and THDi as output. To detect harmonics, frst training is conductedto recognize waveform patterns and calculate the fast fourier transform (FFT) process ofine. Prototype using theAMC1100DUB current sensor, microcontroller and display. To validate the proposed algorithm, compared bystandard measurement tool and FFT. The results show the proposed algorithm has good performance with the averagepercentage error compared by standard measurement tool and FFT of 5.33 %
Penerapan Sampah Buah Tropis untuk Microbial Fuel Cell
Get PDFMicrobial Fuel Cell (MFC) is one tool that uses microbes to produce electrical energy. The main componentsof MFC support are anodes, cathodes, and salt bridges. In this paper, the application of tropical fruit waste to MFCis presented. Tropical fruit waste used here are pineapples, oranges, bananas, watermelons, mangos, and papayas.The fruit waste is extracted and fermented to produce microbial. The microbial produces ions attached to the anode.Measurement of system current and voltage is carried out using a digital multimeter. In pineapple substrate MFC,Voc has a maximum of 485 mV, maximum current density is 163 mA/m2 and maximum power density of 11mW/m2.The orange substrate obtained Voc maximum of 805 mV, maximum current density of 661 mA/m2 and maximumpower density of 62 mW/m2. Voc banana substrate has a maximum of 312 mV, maximum current density of 118 mA/m2 and maximum power density of 5.9 mW/m2. The Voc watermelon substrate has a maximum of 451 mV, maximumcurrent density of 306 mA/m2 and maximum power density of 18.6 mW/m2. Voc mango substrate has a maximum of 586 mV, maximum current density of 229 mA/m2 and maximum power density of 4.3 mW/m2. Voc papaya substrateis a maximum of 338 mV, maximum current density of 58 mA/m2 and maximum power density of 2.9 mW/m2. Theseresults show the potential for renewable electricity sources
Pemanfaatan Fasilitas IT untuk Jaringan Pencahayaan LED di Smartroom
Get PDFIn this research, proposed lighting in smartroom with PoE technology (Power over Ethernet). IT facilityis PoE Switch, Ethernet Cable and LAN network. Smartroom in this study is defined as meeting room in a high risebuilding that has LAN network. This research is motivated by many lighting lamps that use AC power, when thefuture use of AC source will be reduced, even with PoE switch voltage source still use AC, but can eliminate the pitchof light that still uses conventional AC. Building infrastructure systems tend to be developed towards IP protocols.An area where the electrical area becomes fully integrated into the IP network. This is made possible through theuse of LED with low voltage and low current. However, in order to utilize the technical and economic advantagesoffered by LED Lighting Solutions, the addition of light sensor and motion as a switch will make it more complete.The results of the study obtained a cheaper cost than the use without PoE.this research, proposed lighting in smartroom with PoE technology (Power over Ethernet). IT facilityis PoE Switch, Ethernet Cable and LAN network. Smartroom in this study is defined as meeting room in a high risebuilding that has LAN network. This research is motivated by many lighting lamps that use AC power, when thefuture use of AC source will be reduced, even with PoE switch voltage source still use AC, but can eliminate the pitchof light that still uses conventional AC. Building infrastructure systems tend to be developed towards IP protocols.An area where the electrical area becomes fully integrated into the IP network. This is made possible through theuse of LED with low voltage and low current. However, in order to utilize the technical and economic advantagesoffered by LED Lighting Solutions, the addition of light sensor and motion as a switch will make it more complete.The results of the study obtained a cheaper cost than the use without PoE
Pengembangan Sistem Presensi Menggunakan Quick Response Code Dinamis untuk Madrasah Aliyah Al Mukhlisin Bandung
Get PDFQR Code is the development of barcode technology that is able to store various kinds of informationsuch as URLs, telephone numbers, SMS messages or other texts. At first, this technology was used for trackingvehicle parts in automotive industry. This study aims to develop an automatic presence system by utilizing QR Codetechnology, so that the presence process is more effective when compared to the presence manually since it was usingdigital technology. The implementation of the presence system with a QR Code was carried out at the MadrasahAliyah Al Mukhlisin Bandung, to help solving some problems in school administration. The system was built inthe form of an application installed on each teachers smartphone. Every student tapped their QR code image toconfirm their attendance before the lesson begins. The advantage of this application was that it has an advantageon generated image of QR Code changed every user login. The results of development and testing showed that thedeveloped system can be a solution for the presence process through the application of ICT technology with a QRCode. Testing of Quality of Service (QoS) on developed system was appropriate with ITU recommendation. Surveyof users was applied to check the properness of application
Grid SVM: Aplikasi Machine Learning dalam Pengolahan Data Akuakultur
Get PDFWater condition is the main factor that affects the success rate of aquaculture, especially in shrimp cultivation. However, the farmer often experiences difficulties in determining the condition which is stated based on the measurement of various water parameter. Therefore, a proper classification model is needed to help the farmer in classifying the water condition in a pond. By knowing the condition, then proper and correct treatment can be given. In this research, a machine learning algorithm called SVM is used to make a model from an aquaculture dataset. Another processing technique like data normalization and the usage of optimization algorithm named grid search is also performed to improve the modelling result. Furthermore, a test scheme with using k-fold cross-validation is performed to know the performance of the model which is measured by the value of accuracy, precision, recall, f-measure, and AUROC. Then, the SVM model is compared with several models which are made by usinganother machine learning algorithm such as KNN, CNB, RF, MLP, and LR in order to know the best model to be implemented on cultivation process. From the experiment results, the model which is made with SVM and gridsearch optimization has the best performance in the validation process with the performance score of 3.54383
