Jurnal SPEKTRUM
Jurnal SPEKTRUM is peer review journal, published four times a year by the Department of Electrical Engineering, Faculty of Engineering, Universitas Udayana. This journal discusses the scientific works containing results of research in the field of electrical, include: power systems, telecommunications, computers, informatics, controls, and electronics. Authors are expected to include original scientific papers in accordance with the scope of the discussion of this journal including all aspects of the theory and practice are used.
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<![CDATA[RANCANG BANGUN OBJECT DETECTION PADA ROBOT SOCCER MENGGUNAKAN METODE SINGLE SHOT MULTIBOX DETECTOR (SSD MOBILENETV2) ]]>
<![CDATA[Cokorda Gde Wahyu Pramana]]>;
<![CDATA[Duman Care Khrisne]]>;
<![CDATA[Nyoman Putra Sastra]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p4
<![CDATA[Artificial intelligence or AI is a technology that emphasizes machine intelligence in respondinglike humans, developed to help support human work. AI has widely applied in various fieldssuch as industry, medical, education, business, and robotics. The development of AI in the fieldof robotics produces autonomous robots, one example is the KRSBI-Beroda soccer robot. Thisresearch discusses the application of AI in the design of object detection systems using thesingle-shot multibox detector (SSD) model on the KRSBI-Beroda soccer robot. This study aimsto produce an AI model in the form of an artificial neural network (ANN) implanted in the soccerrobot to distinguish between ball, goal, robot, and obstacle objects. This object detection systemwas built using a deep learning method assisted by the TensorFlow Object Detection APIframework using the MobileNetV2 SSD model which is run using the python programminglanguage on the NVIDIA Jetson Nano board which is integrated into the C922 Pro webcamcamera. The model was built using a dataset of 977 images consisting of 3064 objects thatwere trained as many as 200,000 steps on Google Colaboratory. The results showed a modelwith an average mAP of 0.80 with an average total loss of 1.5. Validation of the model resultedin a success rate of object prediction with an average accuracy of up to 98.45%.]]>
<![CDATA[RANCANG BANGUN SISTEM PEMANEN ENERGI ANGIN EXHAUST FAN TURBIN ANGIN SUMBU HORIZONTAL DENGAN PENGARAH ANGIN (WIND TUNNEL) ]]>
<![CDATA[Reki Aji Saputra]]>;
<![CDATA[Cokorde Gede Indra Partha]]>;
<![CDATA[I Wayan Sukerayasa]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p26
<![CDATA[Energy consumption in the current era is increasing and only focuses on the use of nonrenewableenergy in this case fossil energy, namely fuel oil which is limited in number and theprice is increasing. One solution is to use alternative energy that can be renewed or renewable,including water energy, solar energy, biomass energy, wind energy and others. Renewableenergy which has been widely used as electrical energy by developed countries is wind energy,in addition to the use of natural wind energy as alternative energy, there is also artificial wind,namely the waste energy from the exhaust fan can be used as a source of energy. analternative energy source option for Wind Power Plant (WPP). The characteristics of the windoutput from the exhaust fan itself spread the wind direction so that the wind energy that can becaptured by the wind turbine is less than optimal, so it is necessary to install a wind tunnel thatis useful for directing or focusing the wind distribution In this study, a wind tunnel has beendesigned which is placed in the direction of the exhaust wind output of the horizontal axis windturbine exhaust fan. With the addition of a wind tunnel, it can increase the wind speed from 3.3m/s to 5.8 m/s or an increase of 76% and power harvesters increase from 0.38 Watt to 0.96Watt or an increase of 153%.]]>
<![CDATA[KINERJA PROTOKOL NETWORK REDUNDANSI VRRP, HSRP DAN GLBP PADA LAYANAN VIDEO STREAMING ]]>
<![CDATA[I Putu Gede Krsna Yudha Dharma]]>;
<![CDATA[Pande Ketut Sudiarta]]>;
<![CDATA[Widyadi Setiawan]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p17
<![CDATA[Nowadays streaming video services have become the main need for internet users. Tokeep the streaming video service awake, an alternative path is needed to avoid network failure.In creating an alternative path, you can use first hop redundancy protocol (FHRP). In FHRPthere are three redundancy protocols including VRRP, HSRP and GLBP. The purpose of thisstudy is to find out better protocol performance, especially by using streaming video services.The method used is to simulate redundancy protocol using GNS-3 software with 3 scenariosthat run including normal network, down network and recovery network. As for testing eachscenario including testing routers with priority, route trace route, link transfer time and quality ofservice (QoS) video streaming. Based on the results of the study, it was obtained that GLBPprotocol has better performance with an average link transfer time of 1.51 seconds, delay of8.12 ms, packet loss of 0 % and throughput of 1,248 Mbps. This is because in GLBP protocolthere is a load balancing feature that can split the load equally and utilize resources moreeffectively from each router.]]>
<![CDATA[RANCANG BANGUN APLIKASI SELULER PENYEDIA JASA PERAWATAN DAN KECANTIKAN MENGGUNAKAN FRAMEWORK FLUTTER ]]>
<![CDATA[Jauzaa Maylia Suhendro]]>;
<![CDATA[Made Sudarma]]>;
<![CDATA[Duman Care Khrisne]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p9
<![CDATA[The development of technology in this era of globalization has provided many benefitsin human life, one of which is smartphones. In this modern era, looking neat and attractive is adaily necessity for people, especially women. To get beauty care services, people usually haveto look salons and wait their turn. This takes a long time for beauty care service enthusiasts.Based on the existing background, a beauty care service provider application design was builtusing the flutter framework and android operating system with the aim of making it easier forusers to find care and beauty services. In this application there are 3 users, namelyAdministrators who are in charge of controlling Customer and Partner data, Customers as userswho are looking for care and beauty services, and Partners as people who offer care andbeauty services. Based on tests carried out using the Black Box method, the overallfunctionality of the application has been declared successful in accordance with its respectivefunctions and objectives. While the test results using the System Usability Scale (SUS) methodin the application, respondents gave a score with an average value of 73.75 which means thatthe test results have a value above average. It can be concluded that the application can runwell and can be Accepted (Acceptable).]]>
<![CDATA[PERANCANGAN PLTS ATAP PADA GEDUNG KANTOR BUPATI TAPANULI UTARA DENGAN ARSITEKTUR RUMAH ADAT BATAK TOBA ]]>
<![CDATA[Irwan Octopianus Silaban]]>;
<![CDATA[I Nyoman Satya Kumara]]>;
<![CDATA[I Nyoman Setiawan]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p31
<![CDATA[Solar Power Plant (PLTS) is a technology to convert solar energy into electricity. RUEN statesthat the potential for solar electricity in Indonesia is estimated at 207.89 GW and it has beendetermined that the national PLTS capacity target in 2025 is 6.5 GW and continues to increaseto 45 GW in 2050. One of the efforts that can be made to achieve this target is to usegovernment buildings as a place to install PLTS. This study was conducted to find out howmuch potential electrical energy is generated on the rooftop PLTS of the North TapanuliRegent's office which has a roof slope of 52.70. It was found that the PLTS of the NorthTapanuli Regent's office has the potential to generate 39.6 kWp of electrical power. Thesimulation shows the energy data produced by the PV system is 45,646 kWh in one year andhas a role in supplying electrical energy up to 52.9%. So the total of the PV system with Gridelectrical energy supplied to the load is 86,233 kWh/year.]]>
<![CDATA[RANCANG BANGUN SISTEM PEMANEN ENERGI ANGIN EXHAUST FAN DENGAN PENGARUH JARAK TURBIN ANGIN SUMBU HORIZONTAL BILAH EXHAUST FAN ]]>
<![CDATA[Mawadah Wr Febriyani]]>;
<![CDATA[I Wayan Sukerayasa]]>;
<![CDATA[Cokorde Gede Indra Partha]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p22
<![CDATA[Energy demand in Indonesia is increasing, especially in the realization of electricityconsumption which reached 20.18 TWh in July 2020. In fulfilling energy, Indonesia is stillsupported by fossil energy. Indonesia's fossil energy reserves continue to decline, so it isnecessary to increase the non-fossil energy, one of which is wind energy. Wind exhaust fanoutput is waste energy that has the potential to be developed as a micro-scale wind powerplant. The Design and Construction of the Exhaust Fan Wind Energy Harvesting System withthe Effect of the Horizontal Axis Wind Turbine Distance (HAWT) of the Exhaust Fan Blade hasbeen done, the test of this study determine the optimal output power of the generator byconsidering the exhaust fan performance. The test results show that the closest distance of 10cm produces maximum wind speed and power, but the optimal placement distance for theturbine designed is 20 cm with an output power of 1.50 Watt and an increase in exhaust fanconsumption power of 0.38, with the power that can be harvested is 1.50-0.38 = 1.12 Watt,greater than the other test distances.]]>
<![CDATA[STUDI KOORDINASI KERJA RELAI JARAK SEBAGAI PENGAMAN CADANGAN PADA SALURAN 150 KV GIS PESANGGARAN-GI NUSA DUA ]]>
<![CDATA[Deoka Gusti]]>;
<![CDATA[I Gede Dyana Arjana]]>;
<![CDATA[Cokorde Gede Indra Partha]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p14
<![CDATA[The development of Pesanggaran Conventional Substation into the Pesanggaran GasInsulated Switchgear (GIS) as a form of increasing the reliability of the electric power system inBali which led to changes in the protection system configuration on the transmission lineconnecting the GIS Pesanggaran and Nusa Dua Substation. The distance relay that waspreviously functioning as a primary protection was changed to backup protection due to the lackof selectivity of the distance relay in isolate the disruption and as the backup protection if themain protection experiencing a failure. Simulation testing using power system analysis softwareafter determining the value of the distance relay setting and tested with short circuit at 110%and 180% of the transmission line length shows the distance relay has worked according to theP3B JB regulation No. 211/151/P3B/2010 and distance relay can detect disruption in zone 2with a delay time of 0,815 seconds and detect disruption in zone 3 with a delay time of 1,615seconds.]]>
<![CDATA[STUDI LITERATUR PERKEMBANGAN GREEN BUILDING DI INDONESIA ]]>
<![CDATA[Bayu Widiarsa Kadek]]>;
<![CDATA[INS Kumara]]>;
<![CDATA[Rukmi Sari Hartati]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p5
<![CDATA[Green building is an alternative to anticipate damage to the earth due to development activities. This studyreviews the development of green building inkIndonesia with a systematic literature method. The reviewthat was carried out included regulations, implementation and implementation of green building inIndonesia. The development of government regulations on green buildings requires that every buildingmeet the criteria of a green building. There are 20 buildings that have been certified green building by 2018with the gold to platinum category. Research in the field of green building has also developed with 53scientific publications. From the latest reviews, it is found that the implementation of green building inIndonesia has been carried out in various aspects of the building. In the future, policies and regulations atthe national and regional levels are integrated with each other to implement green buildingcomprehensively in Indonesia.]]>
<![CDATA[PROTOTIPE SISTEM MONITORING DAN PENGGANTIAN OTOMATIS INTRAVENOUS FLUID DROPS ]]>
<![CDATA[Afrizal Awlan Suryandaru]]>;
<![CDATA[Nyoman Putra Sastra]]>;
<![CDATA[Gst A Komang Diafari Djuni]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p27
<![CDATA[The giving of intravenous fluids to patients is dispense fluids into the veins using aninfusion set with a certain amount and period. Patients who are given intravenous fluids willconstantly be monitored by a nurse manually and regularly. In this study, a monitoring systemand automatic replacement of intravenous fluids drops were designed to make it easier fornurses to monitor and change infusions automatically. The monitoring system is designed totake advantage of the Telegram communication application integrated with the NodeMCUESP8266. In contrast, the automatic replacement system utilizes an infrared sensor to detectfluid availability. Based on the research results, the infrared sensor will have a logic '1' if infusionfluid is more than 50ml, and the sensor will have a logic '0' if infusion fluid is less than 50ml. Thefastest system response to send sensor data to Telegram Bot reached 01.10 seconds, while thefastest system response to receive orders from Telegram Bot reached 05.70 seconds.]]>
<![CDATA[RANCANG BANGUN PROTOTYPE TURBIN KAPLAN SKALA PLTMH ]]>
<![CDATA[Made Andi Kusumayana B]]>;
<![CDATA[I Wayan Arta Wijaya]]>;
<![CDATA[I Gusti Ngurah Janardana]]>
<![CDATA[ Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM ]]>
Publisher : <![CDATA[Program Studi Teknik Elektro UNUD ]]>
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DOI: 10.24843/SPEKTRUM.2021.v08.i02.p18
<![CDATA[PLTMH is a type of generator that utilizes water resources for its workings. Utilization ofwater resources is still minimally carried out by the community, especially by students ofElectrical Engineering at Udayana University because it must be implemented directly on alarge enough river flow so that it is difficult to study. So, in this study, a prototype modeling ofMHP using a Kaplan turbine was designed which is useful for the learning process before beingimplemented directly in the river. The Kaplan turbine prototype is designed with a head of 2 m,an input pipe of 2xdimxand a discharge of 12 L/s, has a total of 30 guide blades,xwith an openingangle of 30o, with a lengthxofx0.05 meters, a widthxof 0.045 meters, an inside diameterxofx0.33metersxandxan outerxdiameterxofx0.42 meters. Thisxprototype has a total of 5 driving blades,withxanxouter diameterxofx0.16xmeters, a shaft neck diameterxof 0.06 meters, xaxrunner widthofx0.05 meters. The resultsxofxthe Kaplan turbine prototype test are able to produce axpowerxof3.64xwatts, a torquexofx0.231xNm, andxanxefficiencyxof 1.54%.]]>
