Elkha Jurnal Teknik Elektro最新文献_第5页

Deep Learning for Channel Estimation and Signal Detection in OFDM-Based Communication Systems 基于ofdm的通信系统中信道估计和信号检测的深度学习

Elkha Jurnal Teknik Elektro Pub Date : 2022-04-20 DOI: 10.26418/elkha.v14i1.53962

Kah Jing Wong, F. Juwono, R. Reine

引用次数: 2

Application of Genetic Algorithm for Economical Optimization of School Room Lighting According to SNI 03-6575-2001 基于SNI 03-6575-2001的遗传算法在教室照明经济优化中的应用

Elkha Jurnal Teknik Elektro Pub Date : 2022-04-20 DOI: 10.26418/elkha.v14i1.53979

Uli Watini, R. Kurnianto, M. Yusuf, Purwoharjono Purwoharjono

{"title":"Application of Genetic Algorithm for Economical Optimization of School Room Lighting According to SNI 03-6575-2001","authors":"Uli Watini, R. Kurnianto, M. Yusuf, Purwoharjono Purwoharjono","doi":"10.26418/elkha.v14i1.53979","DOIUrl":"https://doi.org/10.26418/elkha.v14i1.53979","url":null,"abstract":"The use of 24 and 30 FL for classrooms (9×8 m) and libraries (10×8 m), respectively, at SMP Negeri 25 Pontianak has not satisfied the lumen standard according to SNI 03-6575-2001. Replacing FL with LED requires calculation of budgets and lumen, including optimization of lamp distance configuration. Thus, replacing FL with LED through an adapted lumen of SNI 03-6575-2001 standard will need 15 and 20 lamps for classrooms and library, respectively. Later, the position of the LED placement has been optimized with the help of a genetic algorithm (GA) and drawing the lamp configuration using Dialux. Before optimization, the calculation result of luminaires for the classroom is 262 lux with a distance of x1 = 1.8 m and x2 = 2.67 m. After optimization, it is obtained that Eav = 283.513 lux and the distance between lamps x1 = 1.586 m and x2 = 2.67 m. The luminaire of library room before optimization is 322 lux, with a distance of x1 = 2 m and x2 = 2 m. After optimization the Eav is 384.9569 lux with x1 = 1.9119 m and x2 = 1.9 m. The lumen standard of replacing FL with LED has complied with SNI with cheaper procurement costs, i.e., for FL Rp.45,152,860.80 and for LED Rp.41,778,528.00 (saving Rp. 3,374,332.80).","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75791495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Implementation of Real-Time Flood Early Warning System (FEWS) Based on IoT Blynk Application 基于IoT Blynk应用的实时洪水预警系统(FEWS)设计与实现

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.49003

H. N. P. Wisudawan

{"title":"Design and Implementation of Real-Time Flood Early Warning System (FEWS) Based on IoT Blynk Application","authors":"H. N. P. Wisudawan","doi":"10.26418/elkha.v13i2.49003","DOIUrl":"https://doi.org/10.26418/elkha.v13i2.49003","url":null,"abstract":"Disaster occurrence in Indonesia needs attention and role from all parties including the community to reduce the risks. Disaster mitigation is one of the ways to reduce the disaster risk through awareness, capacity building, and the development of physical facilities, for example by applying disaster mitigation technology (early warning system, EWS). EWS is one of the effective methods to minimize losses due to disasters by providing warning based on certain parameters for disasters which usually occur such as floods. This research promotes a real-time IoT-based EWS flood warning system (Flood Early Warning System, FEWS) using Arduino and Blynk as well as Global System for Mobile Communication network (GSM) as the communication medium. The steps for implementing FEWS system in real locations are also discussed in this paper. Parameters such as water level, temperature, and humidity as well as rain conditions that are read by the EWS sensor can be accessed in real-time by using android based Blynk application that has been created. The result of the measurement of average temperature, humidity, and water level were 28.6 oC, 63.7 %, and 54.5 cm. Based on this analysis, the parameters indicated that the water level is in normal condition and there are no signs indicating that there will be flooding in the 30 days observation. Based on the data collected by the sensor, FEWS can report four conditions, namely Normal, Waspada Banjir (Advisory), Siaga Banjir (Watch), and Awas Banjir (Warning) that will be sent immediately to the Blynk FEWS application user that has been created.","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"27 12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82712017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Analysis of VRLA Battery for DC Load at Telecommunication Base Station 通信基站直流负载用VRLA蓄电池性能分析

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.49202

I. Simanjuntak, H. Heryanto, Yossy Rahmawaty, Tulus Manurung

引用次数: 1

Designing a Firing Control System on S-60 57mm Cannon S-60 57毫米火炮射击控制系统设计

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.47343

Kurnia Gunadi As'ad, Rachmad Setiawan, M. Rameli

引用次数: 0

Development of Integrated Distribution and Inventory System Simulation Model Using Mobile Depot 基于移动仓库的综合配送与库存系统仿真模型的开发

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.48896

N. H. Djanggu

{"title":"Development of Integrated Distribution and Inventory System Simulation Model Using Mobile Depot","authors":"N. H. Djanggu","doi":"10.26418/elkha.v13i2.48896","DOIUrl":"https://doi.org/10.26418/elkha.v13i2.48896","url":null,"abstract":"Distribution activities are carried out to move an item from one point to another. Product distribution activities are conducted from the production area to the distribution or warehouse area, then from the warehouse to the retailer or consumer. Distribution activities can be established using various modes of land, river, ocean, and air transportation. Land transportation is greatly influenced by road conditions. River and sea transportation excels in carrying capacity which leads to the reduction of distribution costs. The disadvantages of water transportation are longer moving duration and dependence on weather. A warehouse is a typical facility used to accommodate inventory. Inventory system will generate holding costs. River transportation with a large carrying capacity can be used as a distribution medium and temporary warehouse. The land route in the West Kalimantan region is suitable for trucks with a moderate carrying capacity. River routes in West Kalimantan can reach several strategic areas, and river conditions have appropriate specifications for transportation mode with large capacities. The distribution and inventory system integration model using a mobile depot has been proposed in previous studies. Therefore, this research focuses on developing a simulation model for the aforementioned system. The results of this study are expected to provide information about the optimal value of the model configuration and strategy.","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75710388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison and Analysis of Neural Solver Methods for Differential Equations in Physical Systems 物理系统微分方程神经解算器方法的比较与分析

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.49097

Fabio M Sim, E. Budiarto, Rusman Rusyadi

{"title":"Comparison and Analysis of Neural Solver Methods for Differential Equations in Physical Systems","authors":"Fabio M Sim, E. Budiarto, Rusman Rusyadi","doi":"10.26418/elkha.v13i2.49097","DOIUrl":"https://doi.org/10.26418/elkha.v13i2.49097","url":null,"abstract":"Differential equations are ubiquitous in many fields of study, yet not all equations, whether ordinary or partial, can be solved analytically. Traditional numerical methods such as time-stepping schemes have been devised to approximate these solutions. With the advent of modern deep learning, neural networks have become a viable alternative to traditional numerical methods. By reformulating the problem as an optimisation task, neural networks can be trained in a semi-supervised learning fashion to approximate nonlinear solutions. In this paper, neural solvers are implemented in TensorFlow for a variety of differential equations, namely: linear and nonlinear ordinary differential equations of the first and second order; Poisson’s equation, the heat equation, and the inviscid Burgers’ equation. Different methods, such as the naive and ansatz formulations, are contrasted, and their overall performance is analysed. Experimental data is also used to validate the neural solutions on test cases, specifically: the spring-mass system and Gauss’s law for electric fields. The errors of the neural solvers against exact solutions are investigated and found to surpass traditional schemes in certain cases. Although neural solvers will not replace the computational speed offered by traditional schemes in the near future, they remain a feasible, easy-to-implement substitute when all else fails.","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78902258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Web-based Application Forecasting of Components and Tools for Practicum in Telecommunication Engineering Laboratory/ Workshop of State Polytechnic of Sriwijaya 斯里维加亚国立理工学院电信工程实验室/车间基于网络的组件和工具应用预测实习

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.48029

Elmerillia Elmerillia, L. Lindawati, I. Salamah

{"title":"Web-based Application Forecasting of Components and Tools for Practicum in Telecommunication Engineering Laboratory/ Workshop of State Polytechnic of Sriwijaya","authors":"Elmerillia Elmerillia, L. Lindawati, I. Salamah","doi":"10.26418/elkha.v13i2.48029","DOIUrl":"https://doi.org/10.26418/elkha.v13i2.48029","url":null,"abstract":"State Polytechnic of Sriwijaya is an Indonesian vocational institution that incorporates practical learning into all of its existing study programs. In each laboratory of the study program, students will find the supporting components and resources they need for practicum. Telecommunication engineering is one of them. Currently, the component retrieval and tool borrowing system is still manual, both in the retrieval and return stages, by filling out the given hard-file form sheet. Therefore, a web-based inventory monitoring application is required for laboratory technicians. The creation of this application implements the Prototype Method. The implementation of this method aims to make the application that is created to fit the needs of the user. This system helps laboratory technicians and Telecommunication Engineering students in the process of component retrieval and tool borrowing to be more organized and scheduled and can store reports in the form of soft-files. This information system can also be used by students to monitor the number of components and tools available in real-time. This application are also equipped with forecasting the number of practicum components to kwowing the needs of student practicum in the next year. Forecasting was created using the Weighted Moving Average method. Black box testing is carried out in each menu on the application and gives valid results so that the application can be used. ","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78087134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Performance and Analysis of Indirect Torque Control-Based Three-Phase Induction Motor 基于间接转矩控制的三相异步电动机性能与分析

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.49181

A. Pradipta, S. Triwijaya, M. Ridwan

引用次数: 1

Power Outage Sensing Device based on IOT for Service Quality Evaluation in the PLN Distribution System 基于物联网的PLN配电系统服务质量评估停电传感装置

Elkha Jurnal Teknik Elektro Pub Date : 2021-10-22 DOI: 10.26418/elkha.v13i2.43741

Adryan Fahri Zul Fauzi, Agus Kiswantono, S. Saidah

{"title":"Power Outage Sensing Device based on IOT for Service Quality Evaluation in the PLN Distribution System","authors":"Adryan Fahri Zul Fauzi, Agus Kiswantono, S. Saidah","doi":"10.26418/elkha.v13i2.43741","DOIUrl":"https://doi.org/10.26418/elkha.v13i2.43741","url":null,"abstract":"In overcoming electrical disturbances, PLN implements an equipment protection system that aims to reduce the areas experiencing power outage. However, this protection system has not been integrated with the SCADA system. As a parameter to maintain customer service continuity, PLN uses customer-based indexes, i.e., the Customer Average Interruption Duration Index (CAIDI) and Customer Average Interruption Frequency Index (CAIFI). In the calculation of those index values, the record of power outage occurrence at PLN is still not accurate because the duration and frequency of power outage based on customer complaints. In this study, a Power Outage Sensing device is installed on the secondary distribution system transformer 380/220 which can ensure the location, record the frequency and duration of power outage and serve customers in real time based on IOT using WEMOS D1 and optocoupler sensors which can then be accessed on a web. In its implementation, all power outage is recorded in the database and can be accessed on the web interface. This device can speed up the recovery of disturbances in the system after an outage and perform accurate CAIDI and CAIFI index calculations as customer service evaluations.","PeriodicalId":32754,"journal":{"name":"Elkha Jurnal Teknik Elektro","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82012086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3