Pub Date : 2022-09-29DOI: 10.24843/spektrum.2022.v09.i03.p13
N. Trisnawati, N. Wirastuti, I. Hartawan
The computational load and implementation costs of a system are affected by its complexity. The Fast Fourier Transform(FFT).algorithm use in an OFDM system necessitates intensive calculations, which affects the computational load and system complexity. There is a Very Fast Fourier Transform(VFFT) algorithm which has lower complexity than the FFT, and can replace FFT with Floating-Point accuracy. The aim of this study is to determine the performance of the OFDM system by using the FFT and VFFT algorithms over the AWGN channel, based on parameter value of BER vs. Eb/No. According to the simulation results, show that the OFDM (FFT) system has a better BER value, where when Eb/No reaches 6 dB the BER value is less than 10-2, while the OFDM(VFFT) system with a BER value is 10-2, but still has almost the same trend. This is because there is non uniform row gain in the OFDM(VFFT) system. However, with this weakness, OFDM(VFFT) can minimize the complexity of the OFDM system.
{"title":"UNJUK KERJA SISTEM OFDM DENGAN MENGGUNAKAN ALGORITMA VFFT PADA KANAL AWGN","authors":"N. Trisnawati, N. Wirastuti, I. Hartawan","doi":"10.24843/spektrum.2022.v09.i03.p13","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p13","url":null,"abstract":"The computational load and implementation costs of a system are affected by its complexity. The Fast Fourier Transform(FFT).algorithm use in an OFDM system necessitates intensive calculations, which affects the computational load and system complexity. There is a Very Fast Fourier Transform(VFFT) algorithm which has lower complexity than the FFT, and can replace FFT with Floating-Point accuracy. The aim of this study is to determine the performance of the OFDM system by using the FFT and VFFT algorithms over the AWGN channel, based on parameter value of BER vs. Eb/No. According to the simulation results, show that the OFDM (FFT) system has a better BER value, where when Eb/No reaches 6 dB the BER value is less than 10-2, while the OFDM(VFFT) system with a BER value is 10-2, but still has almost the same trend. This is because there is non uniform row gain in the OFDM(VFFT) system. However, with this weakness, OFDM(VFFT) can minimize the complexity of the OFDM system.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80228676","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}
Pub Date : 2022-09-29DOI: 10.24843/spektrum.2022.v09.i03.p2
I. P. Dio Gangga Saskara, N. Pramaita, I. Diafari Djuni H
The signal that arrives at the receiving end is the sum of the various transmissions passed by the signal (multipath) which is influenced by the channel so that there is signal interference. Many innovations have been made so that the received signal can have high security, one of which is spread spectrum with a dual access scheme to increase the ability of many spectrum users in a limited number without disturbing one another. This simulation was tested with the aim of spreading the spectrum with different code lengths for the same bit length of information, and observed from the change in the BER value obtained from the MATLAB 2018a simulation results to find out how the barker code performance on the frequency selective fading channel on a single user. The analysis of this research is obtained from the simulation results in the form of a graph that shows the BER value compared to Eb/No. The BER value shown by the barker code performance on the flat fading channel, which is compared based on the existing flat theory, shows the graph trend and the BER value generated from the simulation is close to the theoretical flat BER value. The performance of the barker code on the frequency selective fading channel is carried out by varying the number of multipath components 7, 5, and 3. The simulation results show that multipath 3 is the best with the smallest bit error value compared to multipath 7 and 5. Barker code performance is strongly influenced by the number of multipath components, the more the number of multipath components, the more performance of the barker code bit error, and vice versa.
{"title":"DESAIN SIMULASI UNJUK KERJA BARKER CODE PADA KANAL FREQUENCY SELECTIVE FADING","authors":"I. P. Dio Gangga Saskara, N. Pramaita, I. Diafari Djuni H","doi":"10.24843/spektrum.2022.v09.i03.p2","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p2","url":null,"abstract":"The signal that arrives at the receiving end is the sum of the various transmissions passed by the signal (multipath) which is influenced by the channel so that there is signal interference. Many innovations have been made so that the received signal can have high security, one of which is spread spectrum with a dual access scheme to increase the ability of many spectrum users in a limited number without disturbing one another. This simulation was tested with the aim of spreading the spectrum with different code lengths for the same bit length of information, and observed from the change in the BER value obtained from the MATLAB 2018a simulation results to find out how the barker code performance on the frequency selective fading channel on a single user. The analysis of this research is obtained from the simulation results in the form of a graph that shows the BER value compared to Eb/No. The BER value shown by the barker code performance on the flat fading channel, which is compared based on the existing flat theory, shows the graph trend and the BER value generated from the simulation is close to the theoretical flat BER value. The performance of the barker code on the frequency selective fading channel is carried out by varying the number of multipath components 7, 5, and 3. The simulation results show that multipath 3 is the best with the smallest bit error value compared to multipath 7 and 5. Barker code performance is strongly influenced by the number of multipath components, the more the number of multipath components, the more performance of the barker code bit error, and vice versa.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85257813","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}
Pub Date : 2022-09-29DOI: 10.24843/spektrum.2022.v09.i03.p5
I. G. N. Agastya Citranath, L. Jasa, I. Suartika
Vortex turbine is a reaction water turbine that can utilize energy from low headed waterway. The power output of generator on microhydro power plant will differ depend on the input parameters used, such as water flow rates. Hence, this research goal is to find out the power output of generator from various water flow rates with an artificial waterway on a vortex turbine within the microhydro power plant prototype. This research consist a free variable of water flow rates of 2,5 l/s, 3,5 l/s, and 4,5 l/s using 9 blades turbine and paralel load lamps. From the experiment, raises of water flow rate is proportional to the increase of generator’s power output. The power output generated by each water flow rates used are 0,085 W at 2,5 l/s water flow rate, 0,256 at 3,5 l/s, and 0,387 at 4,5 l/s. Based on the experiment, it can be concluded that the increase of input water flow rate is equal to the increase of the power output generated by the generator. It is caused by the rotation of the turbine will be adjusted by the water flow rate used.
{"title":"ANALISIS DAYA OUTPUT GENERATOR BERDASARKAN VARIASI DEBIT AIR PADA PROTOTYPE PLTMH DENGAN TURBIN VORTEX","authors":"I. G. N. Agastya Citranath, L. Jasa, I. Suartika","doi":"10.24843/spektrum.2022.v09.i03.p5","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p5","url":null,"abstract":"Vortex turbine is a reaction water turbine that can utilize energy from low headed waterway. The power output of generator on microhydro power plant will differ depend on the input parameters used, such as water flow rates. Hence, this research goal is to find out the power output of generator from various water flow rates with an artificial waterway on a vortex turbine within the microhydro power plant prototype. This research consist a free variable of water flow rates of 2,5 l/s, 3,5 l/s, and 4,5 l/s using 9 blades turbine and paralel load lamps. From the experiment, raises of water flow rate is proportional to the increase of generator’s power output. The power output generated by each water flow rates used are 0,085 W at 2,5 l/s water flow rate, 0,256 at 3,5 l/s, and 0,387 at 4,5 l/s. Based on the experiment, it can be concluded that the increase of input water flow rate is equal to the increase of the power output generated by the generator. It is caused by the rotation of the turbine will be adjusted by the water flow rate used.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90988178","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}
Pub Date : 2022-09-29DOI: 10.24843/spektrum.2022.v09.i03.p4
Kadek Rekha Agustha, L. Jasa, I. Suartika
Micro-hydro power plants using vortex turbines have the advantage that their operation can be carried out at low levels of falling water or head. One of the problems that exist in vortex turbine is there is no equation to determine the maximum output generated by the number of blades used. Based on the problems described, a prototype of micro-hydro power plants using vortex was made to test the variations in the number of blades to get the best efficiency. The prototype test in this study used a turbine with various number of blades of 3, 5, and 9 blades. Based on the research conducted, the increase of micro-hydro power plant prototype performance equals to number of blades used. When the system was set with a discharge of 4.5 liters per second paired with a turbine consisted of 9 blades which produced 303.8 rpm of turbine rotation before coupled by the generator and 230.5 rpm after coupled by the generator, the generator rotation was 653.5 rpm, the generator output voltage was 8.29 Volts, generator current output was 0.046, generator power output was 0.387 Watt, torque was 0.0393 Nm, and the highest efficiency was 2.92%
{"title":"PENGARUH VARIASI JUMLAH SUDU TERHADAP EFISIENSI PADA PROTOTYPE PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) DENGAN MENGGUNAKAN TURBIN VORTEX","authors":"Kadek Rekha Agustha, L. Jasa, I. Suartika","doi":"10.24843/spektrum.2022.v09.i03.p4","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p4","url":null,"abstract":"Micro-hydro power plants using vortex turbines have the advantage that their operation can be carried out at low levels of falling water or head. One of the problems that exist in vortex turbine is there is no equation to determine the maximum output generated by the number of blades used. Based on the problems described, a prototype of micro-hydro power plants using vortex was made to test the variations in the number of blades to get the best efficiency. The prototype test in this study used a turbine with various number of blades of 3, 5, and 9 blades. Based on the research conducted, the increase of micro-hydro power plant prototype performance equals to number of blades used. When the system was set with a discharge of 4.5 liters per second paired with a turbine consisted of 9 blades which produced 303.8 rpm of turbine rotation before coupled by the generator and 230.5 rpm after coupled by the generator, the generator rotation was 653.5 rpm, the generator output voltage was 8.29 Volts, generator current output was 0.046, generator power output was 0.387 Watt, torque was 0.0393 Nm, and the highest efficiency was 2.92%","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"224 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75891360","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}
Pub Date : 2022-09-29DOI: 10.24843/spektrum.2022.v09.i03.p12
Yohanes Andre Setiawan, Y. Divayana, W. Widiadha
Supervised Machine Learning can make robots smarter by making decisions automatically. This study compares various Supervised Machine Learning algorithms to determine the best algorithm that can be used on Robot Assistant Udayana 02 (RATNA02). The algorithms to be compared are Artificial Neural Network (ANN), Support Vector Machine (SVM), Decision Tree (DT), Random Forest (RF), Naïve Bayesian (NB), and K-Nearest Neighbor (KNN). Models were created using the TensorFlow and SKLearn libraries. The model is trained using 100.000 data of left sensor, right sensor, front sensor, robot offset, and data label. Data preprocessing is done using MinMaxScalar and LabelEncoder. The comparisons that will be measured are accuracy, training duration, and file size of the model. DT and RF algorithms get 100% accuracy followed by ANN, KNN and SVM with 99.87%, 97.42% and 98.52% respectively, and NB with 87.34%. Fastest training duration was achieved by NB for 0.03 seconds, followed by DT for 0.08 seconds, while other algorithms took more than one second. The smallest file size is owned by NB with a size of 2kb and DT ranks second with 4kb, other algorithms have a file size of more than 25kb. Decision Tree Algorithm is the best because the duration of the model training is relatively fast, the file size is small, and the accuracy is high.
{"title":"PERBANDINGAN ALGORITMA SUPERVISED MACHINE LEARNING UNTUK SISTEM PENGHINDARAN HALANGAN PADA ROBOT ASSISTANT UDAYANA 02 (RATNA02)","authors":"Yohanes Andre Setiawan, Y. Divayana, W. Widiadha","doi":"10.24843/spektrum.2022.v09.i03.p12","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i03.p12","url":null,"abstract":"Supervised Machine Learning can make robots smarter by making decisions automatically. This study compares various Supervised Machine Learning algorithms to determine the best algorithm that can be used on Robot Assistant Udayana 02 (RATNA02). The algorithms to be compared are Artificial Neural Network (ANN), Support Vector Machine (SVM), Decision Tree (DT), Random Forest (RF), Naïve Bayesian (NB), and K-Nearest Neighbor (KNN). Models were created using the TensorFlow and SKLearn libraries. The model is trained using 100.000 data of left sensor, right sensor, front sensor, robot offset, and data label. Data preprocessing is done using MinMaxScalar and LabelEncoder. The comparisons that will be measured are accuracy, training duration, and file size of the model. DT and RF algorithms get 100% accuracy followed by ANN, KNN and SVM with 99.87%, 97.42% and 98.52% respectively, and NB with 87.34%. Fastest training duration was achieved by NB for 0.03 seconds, followed by DT for 0.08 seconds, while other algorithms took more than one second. The smallest file size is owned by NB with a size of 2kb and DT ranks second with 4kb, other algorithms have a file size of more than 25kb. Decision Tree Algorithm is the best because the duration of the model training is relatively fast, the file size is small, and the accuracy is high.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78792984","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}
Pub Date : 2022-07-21DOI: 10.24843/spektrum.2022.v09.i02.p16
I. K. Adi Febriana Putra, I. A. Dwi Giriantari, I. W. Sukerayasa
PLN's electricity sales in 2020 reached 234.5 TWh, while electricity consumption in Bali Province throughout 2020 was 4.9 TWh. In this study, PLTS roof supporting parking at the Office of the Manpower and ESDM Office of the Province of Bali is used as a location for installing PLTS in the use of new and renewable energy which has an impact on saving electricity bills and reducing CO? emissions. PLTS is installed with a total capacity of 40 kWp with an on grid configuration. Based on the research results, the simulation uses HelioScope software using two scenarios. In scenario 1 with an optimal inclination angle of 14.79°, the potential for energy production is 59.251,00 kWh/year, while in scenario 2 with an optimal tilt angle of 6.35°, the potential for energy production is 59.251,00 kWh/year. PLTS production from June to December 2021 is 35,287.90 kWh with savings on electricity bill costs of Rp. 67,640,740.00 and is able to reduce total CO? gas emissions by 27,233.33 kg CO?.
2020年，PLN的电力销售达到234.5太瓦时，而巴厘岛省2020年全年的用电量为4.9太瓦时。在这项研究中，在巴厘岛省人力资源和ESDM办公室的办公室，PLTS屋顶支持停车场被用作安装PLTS的地点，使用新能源和可再生能源，这对节省电费和减少二氧化碳产生了影响。排放。PLTS的总容量为40 kWp，并网配置。在研究结果的基础上，利用HelioScope软件进行了两种场景的仿真。当最佳倾角为14.79°时，情景1的产能潜力为59.25.1万千瓦时/年;当最佳倾角为6.35°时，情景2的产能潜力为59.25.1万千瓦时/年。从2021年6月到12月，PLTS的产量为35,287.90千瓦时，节省电费成本为67,640,740.00卢比，并能够减少总CO?气体排放量减少27,233.33 kg CO?
{"title":"ANALISIS PENGHEMATAN BIAYA LISTRIK DI KANTOR DINAS KETENAGAKERJAAN DAN ESDM PROVINSI BALI PASCA TERPASANG PLTS ATAP 40 KWP","authors":"I. K. Adi Febriana Putra, I. A. Dwi Giriantari, I. W. Sukerayasa","doi":"10.24843/spektrum.2022.v09.i02.p16","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p16","url":null,"abstract":"PLN's electricity sales in 2020 reached 234.5 TWh, while electricity consumption in Bali Province throughout 2020 was 4.9 TWh. In this study, PLTS roof supporting parking at the Office of the Manpower and ESDM Office of the Province of Bali is used as a location for installing PLTS in the use of new and renewable energy which has an impact on saving electricity bills and reducing CO? emissions. PLTS is installed with a total capacity of 40 kWp with an on grid configuration. Based on the research results, the simulation uses HelioScope software using two scenarios. In scenario 1 with an optimal inclination angle of 14.79°, the potential for energy production is 59.251,00 kWh/year, while in scenario 2 with an optimal tilt angle of 6.35°, the potential for energy production is 59.251,00 kWh/year. PLTS production from June to December 2021 is 35,287.90 kWh with savings on electricity bill costs of Rp. 67,640,740.00 and is able to reduce total CO? gas emissions by 27,233.33 kg CO?.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"80 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84069412","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}
Pub Date : 2022-06-30DOI: 10.24843/spektrum.2022.v09.i02.p17
Ida Bagus Gede Wira Negara, I. Janardana, I. A. Arta Wijaya
In addition to solar and wind energy, the hydrological cycle can be used for energysources by utilizing waves or currents or water potential e nergy due to differences in water level.This water energy is energy that has not been utilized optimally. In general, the utilization of thisenergy source is carried out on a large scale and requires very large costs. According toobservations, the Dukuh Moncos Traditional Village has the potential for generating electricitybecause the river flows are quite stable and sustainable. In this study, a study was conductedon the potential of the Werdi Putra Sedana irrigation river flow around the Kelaci Templ e, DukuhMoncos Traditional Village, Sobangan Village, Mengwi District, Badung Regency to be utilizedas a pico hydro power plant with quantitative and descriptive methods. This study was carriedout by measuring the water flow rate then measuring the head or height difference then continuously measuring the hydraulic potential, from the measurement stage and obtaining theresults then calculating the potential power generated by the irrigation river so that the powergenerated was obtained. The flow of the Werdi Putra Sedana subak river in Banjar HamletMoncos, Sobangan Village, Mengwi District, Badung Regency has the potential to be used asan alternative energy source, namely a pico hydro power plant (PLTPH) with an average powerof 3.86 kW.
除了太阳能和风能之外，水循环还可以利用波浪或水流或由于水位差异而产生的水势能作为能源。这种水能是没有得到最佳利用的能量。一般来说，这种能源的利用是大规模进行的，需要非常高的成本。根据我们的观察，Dukuh Moncos传统村具有发电的潜力，因为河流的流量相当稳定和可持续。本研究采用定量和描述的方法，对巴东县蒙威区索邦干村DukuhMoncos传统村克拉奇寺周围Werdi Putra Sedana灌溉河流量作为微型水力发电厂的潜力进行了研究。本研究是通过测量水流流量，测量水头或高差，然后连续测量水势，从测量阶段得到结果，然后计算灌溉河流产生的势能，从而得到所产生的功率。位于巴东县蒙威区索邦干村Banjar HamletMoncos的Werdi Putra Sedana subak河的流量具有替代能源的潜力，即平均功率为3.86千瓦的微型水力发电厂(PLTPH)。
{"title":"STUDI POTENSI PEMBANGKIT LISTRIK TENAGA PIKO HIDRO DI ALIRAN SUNGAI IRIGASI SUBAK WERDI PUTRA SEDANA KABUPATEN BADUNG","authors":"Ida Bagus Gede Wira Negara, I. Janardana, I. A. Arta Wijaya","doi":"10.24843/spektrum.2022.v09.i02.p17","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p17","url":null,"abstract":"In addition to solar and wind energy, the hydrological cycle can be used for energysources by utilizing waves or currents or water potential e nergy due to differences in water level.This water energy is energy that has not been utilized optimally. In general, the utilization of thisenergy source is carried out on a large scale and requires very large costs. According toobservations, the Dukuh Moncos Traditional Village has the potential for generating electricitybecause the river flows are quite stable and sustainable. In this study, a study was conductedon the potential of the Werdi Putra Sedana irrigation river flow around the Kelaci Templ e, DukuhMoncos Traditional Village, Sobangan Village, Mengwi District, Badung Regency to be utilizedas a pico hydro power plant with quantitative and descriptive methods. This study was carriedout by measuring the water flow rate then measuring the head or height difference then continuously measuring the hydraulic potential, from the measurement stage and obtaining theresults then calculating the potential power generated by the irrigation river so that the powergenerated was obtained. The flow of the Werdi Putra Sedana subak river in Banjar HamletMoncos, Sobangan Village, Mengwi District, Badung Regency has the potential to be used asan alternative energy source, namely a pico hydro power plant (PLTPH) with an average powerof 3.86 kW.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75743669","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}
Pub Date : 2022-06-30DOI: 10.24843/spektrum.2022.v09.i02.p10
Novian Bayu Putranto, Agus Dharma, Putu Ayu Rhamani Suryadhi
An energy audit is needed to find out energy saving opportunities (PHE) so that it will reduce the amount of electricity bills at the Denpasar Art Center which is used as a cultural performance center in Bali. A more specific location in this research is the Ksirarnawa Art Center Denpasar Building in the lighting section. The energy audit in this study is combined with an IoT-based electrical energy monitoring tool so that electricity usage can be monitored in real time. This IoT-based electrical energy monitoring uses Arduino Nano as a data processor as well as sending data to a site service called Thingspeak to record and display data from sensors. The sensors used are the ZMPT101B voltage sensor and the YHDC SCT 013-000 current sensor which are integrated with the NodeMCU as a module to connect to a wireless network. The results of the energy audit at the Denpasar Art Center got a potential Energy Saving Opportunity (PHE) of 33.6% with suggestions to related parties being to replace lamps using LEDs and to regularly set on/off times.
{"title":"AUDIT ENERGI DAN MONITORING BERBASIS IOT UNTUK PENINGKATAN EFISIENSI PENGGUNAAN LISTRIK DI ART CENTER DENPASAR","authors":"Novian Bayu Putranto, Agus Dharma, Putu Ayu Rhamani Suryadhi","doi":"10.24843/spektrum.2022.v09.i02.p10","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p10","url":null,"abstract":"An energy audit is needed to find out energy saving opportunities (PHE) so that it will reduce the amount of electricity bills at the Denpasar Art Center which is used as a cultural performance center in Bali. A more specific location in this research is the Ksirarnawa Art Center Denpasar Building in the lighting section. The energy audit in this study is combined with an IoT-based electrical energy monitoring tool so that electricity usage can be monitored in real time. This IoT-based electrical energy monitoring uses Arduino Nano as a data processor as well as sending data to a site service called Thingspeak to record and display data from sensors. The sensors used are the ZMPT101B voltage sensor and the YHDC SCT 013-000 current sensor which are integrated with the NodeMCU as a module to connect to a wireless network. The results of the energy audit at the Denpasar Art Center got a potential Energy Saving Opportunity (PHE) of 33.6% with suggestions to related parties being to replace lamps using LEDs and to regularly set on/off times.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85501213","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}
Pub Date : 2022-06-30DOI: 10.24843/spektrum.2022.v09.i02.p8
I. N. Tri Juliarta, A. A. G. Maharta Pemayun, Gd Dyana Arjana
The existence of public street lighting (APJ) as a means of supporting the road is very necessary to provide comfort, security, and safety for road users. Public street lighting that is not in accordance with the 2008 Indonesian National Standard (SNI) can cause road problems. SNI 2008 requires primary arterial roads to have an average illumination of 11-20 lux. The problem of lack of illumination occurs on the By Pass Munggu Tanah Lot road from the Seseh Beach traffic light intersection to the Singing beach road intersection, which has a length of 1.47 Km with a total of 21 street lighting points that produce an average illumination of 4,58 lux. The problem of harmonics in the electric power system is increasingly complex with the increasing use of non-linear equipment (eg LED lamps), where this equipment produces harmonics in voltage and current waves. In this study, harmonic calculations will be carried out on LED lamps and mercury lamps. The method used in the preparation of this research is a method of comparing the characteristics of mercury lamps and LED lamps, which is to compare from a technical and economic point of view. After that, match the provisions and conformity which in this case refers to SNI 2008.
公共街道照明(APJ)的存在作为一种支持道路的手段是非常必要的，为道路使用者提供舒适性，安全性和安全性。不符合2008年印尼国家标准(SNI)的公共街道照明可能会导致道路问题。SNI 2008要求主干道的平均照度为11-20勒克斯。照明不足的问题发生在从Seseh Beach交通灯路口到Singing Beach路路口的By Pass Munggu Tanah Lot道路上，该道路全长1.47公里，共有21个路灯点，平均照度为4,58勒克斯。随着越来越多地使用非线性设备(如LED灯)，电力系统中的谐波问题变得越来越复杂，这些设备在电压和电流波中产生谐波。在本研究中，将对LED灯和汞灯进行谐波计算。在本研究的准备中使用的方法是比较汞灯和LED灯的特性的方法，即从技术和经济的角度进行比较。之后，匹配规定和一致性，这里指的是SNI 2008。
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Pub Date : 2022-06-30DOI: 10.24843/spektrum.2022.v09.i02.p2
I. N. Agus Junaedi, A. A. N. Amrita, I. N. Setiawan
Plant factory is a technological development in agriculture that is able to overcome the decline in productivity in the agricultural sector caused by limited agricultural land. The concept of the plant factory itself is the application of a good environmental condition for plants to grow indoors which is easy to control so that they are not affected by the weather outside. The temperature and humidity in the plant factory must be monitored and controlled in real time with an Internet of Things (IoT) technology that utilizes internet connectivity to connect and transmit data. The system is designed using two microcontrollers, namely Arduino nano which functions as an input reader for temperature and humidity sensors, namely the DHT22 sensor, while ESP32 functions as a module for sending DHT22 sensor data to the Blynk via an internet connection to be stored in the database and can be accessed via the smartphone user. The ESP32 also functions as an automatic control of air humidity and air conditioning (AC) control remotely via a smartphone.
{"title":"IMPLEMENTASI SISTEM PEMANTAUAN SUHU DAN KELEMBABAN UDARA BERBASIS IOT PADA PLANT FACTORY KEBUN PERCOBAAN FAKULTAS PERTANIAN UNIVERSITAS UDAYANA","authors":"I. N. Agus Junaedi, A. A. N. Amrita, I. N. Setiawan","doi":"10.24843/spektrum.2022.v09.i02.p2","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i02.p2","url":null,"abstract":"Plant factory is a technological development in agriculture that is able to overcome the decline in productivity in the agricultural sector caused by limited agricultural land. The concept of the plant factory itself is the application of a good environmental condition for plants to grow indoors which is easy to control so that they are not affected by the weather outside. The temperature and humidity in the plant factory must be monitored and controlled in real time with an Internet of Things (IoT) technology that utilizes internet connectivity to connect and transmit data. The system is designed using two microcontrollers, namely Arduino nano which functions as an input reader for temperature and humidity sensors, namely the DHT22 sensor, while ESP32 functions as a module for sending DHT22 sensor data to the Blynk via an internet connection to be stored in the database and can be accessed via the smartphone user. The ESP32 also functions as an automatic control of air humidity and air conditioning (AC) control remotely via a smartphone.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86157344","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}
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