I Putu Eka Widya Pratama | Institut Teknologi Sepuluh Nopember (original) (raw)
Papers by I Putu Eka Widya Pratama
Bulletin of Electrical Engineering and Informatics, 2024
Recently, a problem which often experienced by the Environmental Agencyis to monitor the quality ... more Recently, a problem which often experienced by the Environmental Agencyis to monitor the quality of industrial waste. The problem comes frommanual monitoring of wastewater and the high cost of laboratory tests foreach variable for the waste. This system is intended to develop a wastewatermonitoring system considering the state of the environment and technology.This system uses 5 types of sensors to measure the quality of wastewater.The sensor will display measurement data both offline via liquid crystaldisplay (LCD) and online via the website. For the pH sensor test, weobtained an error value approximately of 1.32% and accuracy of 98.68%.For the oxidation reduction potential (ORP) sensor test, we obtained an errorvalue of 1.4% with 98.6% accuracy. We obtained an error value of 0.22%with 99.78% accuracy for the temperature sensor test. For the total dissolvedsolid (TDS) sensor test, we obtained an error value of 1.02% with 98.98%accuracy. The color sensor is validated using a spectrometer to measure thevariation of color in remazol waste concentration. For the Client - Servercommunication test, the system has a delay of 2 seconds. One of theadvantages of using a web server is the system has minimum network traffic.
International Journal of Electrical and Computer Engineering (IJECE), 2024
The water quality is vital for the vannamei shrimp pond's productivity. Manual monitoring at Gunu... more The water quality is vital for the vannamei shrimp pond's productivity. Manual monitoring at Gunung Anyar's vannamei shrimp pond is timeconsuming, ineffective, and potentially harmful. In this research, we developed a real-time monitoring system for the water quality of the vannamei shrimp pond. This monitoring system is integrated with a solarbased aerator. To address this, water quality monitoring in a solar-based aerator system tracks the degree of acidity (pH), temperature, and total dissolved solids (TDS) remotely using a website and real-time mobile phone Android application with 98.57% accuracy and 1.43% error. Seven days of data revealed the degree of acidity between 6.92 and 7.34 is indicated poor conditions of the pond While the temperatures from 23.59 °C to 38.32 °C, and TDS from 628.65 to 652.34 ppm indicate the good condition of the shrimp pond. This real-time monitoring system can help vannamei shrimp farmers monitor the actual conditions of their ponds
Lamp automation is utilized to adjust the lighting in the classroom by adjusting to the level of ... more Lamp automation is utilized to adjust the lighting in the classroom by adjusting to the level of sunlight intensity outside the classroom. The light intensity will be adjusted to the utilization of lights as indicated by the need to enlighten a room. Therefore, this research aims to depict the design of a light intensity measurement system using a BH1750 sensor that will be carried out to measure the intensity of sunlight in units of light (lux). The signal from the sensor will be transmitted to a mini pc which functions to process measurement data and display it on the graphical user interface (GUI). As a result, the sensor will instruct the dimmer as an actuator to control the classroom lights according to the lighting from the sun. This system is already installed in the classroom and can save energy around 35 kWh a year.
Zenodo (CERN European Organization for Nuclear Research), 2023
The continuous use of boilers in the manufacture spun pile concretes company causes increased exh... more The continuous use of boilers in the manufacture spun pile concretes company causes increased exhaust gas emissions such as NOX gas from boiler combustion. In order to reduce NOX gas emission, clean water is used in the absorption process to tie the gases. The water resulting from the NOX gas binder will change color to become more concentrated which makes the water saturated in binding NOX gas. It is necessary to change the water in the tub shelter. Meanwhile the process of replacing cloudy water from tub shelter is still done manually. Therefore, in this research, a monitoring and control system for water turbidity is designed to improve the performance of the NOX gas binder. The monitoring system designed using a 16x2 LCD as a GUI will display the turbidity value on the NTU scale, while the control system designed uses Arduino Uno as a microcontroller and then uses a solenoid valve as an actuator to regulate the flow rate of water. Turbidity sensor type SEN-0189 is used as a water turbidity sensor and using a float switch to control the water level in the reservoir. The results show that the system is able to reduce the turbidity of the water from 250 NTU on the to 114 NTU.
Jurnal Otomasi Kontrol dan Instrumentasi
In the digital transformation of manufacturing and service companies towards Industry 4.0, it wil... more In the digital transformation of manufacturing and service companies towards Industry 4.0, it will require the presentation of digital information as cognitive support for their work. Pupuk Indonesia encourages its subsidiaries to implement digitalization innovations to strengthen subsidiary synergy, namely the implementation of the Digital Fertilizer system. Digital Fertilizer is a system that functions to monitor factory performance online which is useful to support increasing the reliability of production facilities. Therefore, PT Pupuk Indonesia Utilitas Gresik Gas Co-Generation Plant (GGCP) implemented the innovation suggested by PT Pupuk Indonesia (Persero). In mid-2022, the e-Monitoring and e-Logsheet projects started. In this study, we will discuss the implementation of e-Monitoring and e-Logsheet at the GGCP Factory.
Sewagati
Produksi tempe di Bagusari, Keluarahan Jogotrunan, Kabupaten Lumajang sudah ada sejak sekitar 75 ... more Produksi tempe di Bagusari, Keluarahan Jogotrunan, Kabupaten Lumajang sudah ada sejak sekitar 75 tahun yang lalu. Hampir 90% masyarakat Bagusari memproduksi dan menjual tempe sebagai pekerjaan utama. Kendala yang biasanya dihadapi oleh produsen tempe yaitu faktor cuaca. Proses pematangan tempe yang dipengaruhi cuaca dan suhu lingkungan berkaitan dengan proses fermentasi tempe. Produsen masih menggunakan cara konvensional pada proses fermentasi tempe, maka solusi untuk mengatasinya, yaitu dengan menggantikan cara konvensional (manual) tersebut menjadi otomatis agar suhu dan kelembapan pada proses fermentasi tetap terjaga. Berangkat dari keluhan UMKM produsen tempe di Bagusari maka pada abdimas dibuat mesin oven untuk pengendali suhu dan kelembapan pada proses fermentasi tempe dan dilengkapi modul Internet of Things sebagai upaya optimalisasi waktu produksi tempe. Dengan mesin oven diperoleh hasil bahwa fermentasi kedelai dengan massa 250 gram menggunakan alat lebih cepat 11,4 jam dib...
IOP Conference Series: Earth and Environmental Science
The operational conditions of the anaerobic bioreactor can be predicted using three parameters, s... more The operational conditions of the anaerobic bioreactor can be predicted using three parameters, such as biogas pressure, biogas mass flow rate, and methane gas content. This research will present a monitoring system for the operational conditions of an anaerobic bioreactor through the measurement of those operational parameters based on knowledge data. The knowledge-based monitoring system is equipped with an interface for connectivity with pressure sensor, mass flow rate and methane gas content sensor, so that it can monitor the condition of the bioreactor in real time. The implementation of bioreactor monitoring is applied at bioreactors in Pakal Benowo Forest, Surabaya. The trial test was carried out under three different conditions: In the morning (around 08.00 AM) indicated information on the methane gas content of 72.5% LEL, biogas pressure 7.3 kPa and mass flow rate biogas 0.3 liters per minute. The second one during the day (around 11.00 AM) indicates information on the meth...
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON FRONTIER OF DIGITAL TECHNOLOGY TOWARDS A SUSTAINABLE SOCIETY
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON FRONTIER OF DIGITAL TECHNOLOGY TOWARDS A SUSTAINABLE SOCIETY
JURNAL OTOMASI KONTROL DAN INSTRUMENTASI , 2023
Dalam transformasi digital perusahaan manufaktur maupun jasa menuju Industri 4.0, maka dibutuhkan... more Dalam transformasi digital perusahaan manufaktur maupun jasa menuju Industri 4.0, maka dibutuhkan penyajian informasi digital sebagai dukungan kognitif untuk pekerjaan mereka. Pupuk Indonesia mendorong anak perusahaan untuk menerapkan inovasi digitalisasi untuk memperkuat sinergi anak perusahaan yaitu penerapan sistem Digital Fertilizer. Digital Fertilizer merupakan sistem yang berfungsi untuk memantau performa pabrik secara online yang berguna untuk mendukung peningkatan keandalan fasilitas produksi. Oleh karena itu, PT Pupuk Indonesia Utilitas Pabrik Gresik Gas Co-Generation Plant (GGCP) menerapkan inovasi yang telah disarankan oleh PT Pupuk Indonesia (Persero). Pada pertengahan tahun 2022, proyek e-Monitoring dan e-Logsheet telah dimulai. Pada penelitian ini, dibahas implementasi e-Monitoring dan e-Logsheet pada Pabrik GGCP.
Res Militaris, 2023
The continuous use of boilers in the manufacture spun pile concretes company causes increased exh... more The continuous use of boilers in the manufacture spun pile concretes company causes increased exhaust gas emissions such as NOX gas from boiler combustion. In order to reduce NOX gas emission, clean water is used in the absorption process to tie the gases. The water resulting from the NOX gas binder will change color to become more concentrated which makes the water saturated in binding NOX gas. It is necessary to change the water in the tub shelter. Meanwhile the process of replacing cloudy water from tub shelter is still done manually. Therefore, in this research, a monitoring and control system for water turbidity is designed to improve the performance of the NOX gas binder. The monitoring system designed using a 16x2 LCD as a GUI will display the turbidity value on the NTU scale, while the control system designed uses Arduino Uno as a microcontroller and then uses a solenoid valve as an actuator to regulate the flow rate of water. Turbidity sensor type SEN-0189 is used as a water turbidity sensor and using a float switch to control the water level in the reservoir. The results show that the system is able to reduce the turbidity of the water from 250 NTU on the to 114 NTU.
2021 International Conference on Advanced Mechatronics, Intelligent Manufacture and Industrial Automation (ICAMIMIA), 2021
The content of methane gas (CH4) in biogas varies depending on livestock feed and the weather aro... more The content of methane gas (CH4) in biogas varies depending on livestock feed and the weather around the bioreactor, so that it will have an impact on the heat generated in the combustion chamber of the electric generator. For this reason, it is necessary to measure the content of methane gas in biogas. The information on the content of methane gas in biogas is very useful for regulating the ratio of air supply and biogas supply in maintaining the quality of the heat produced in the combustion chamber. So that the operation of the electric generator can be maintained. The methane gas content device consists of a methane gas sensor, a data processing circuit and a personal computer equipped with a GUI (Graphical User Interface), the measurement data can be integrated with the ratio control program on a PC which also functions as a controller. So that the PC can generate a control signal to adjust the ratio of air supply and biogas supply to the biogas as a power electric generator.
IOP Conference Series: Earth and Environmental Science, 2022
Incomplete combustion process from boiler in palm oil processing industry usually discharged into... more Incomplete combustion process from boiler in palm oil processing industry usually discharged into the air in the form of black smoke due to the high water contain in the fuel of the boiler which will pollute the air. With this problem the research was conducted of designing a simulation of fuel dryer to dry out the boiler fuel before it used by utilizing the exhaust heat of the combustion system in the boiler. The simulation design of the fuel dryer is based on computational fluid dynamic (CFD) with parameters control are air velocity and heat temperature of fuel dryer. The results obtained the distribution of air velocity in the dryer has a value range of 0-40 m/s with the highest velocity occurring when hot exhaust air enters the dryer while the temperature distribution inside the dryer has a value range of 90-270 °C with the highest temperature appearing around hot air inlet exhaust and the lowest temperature appears in the hot air outlet section of the dryer.
Universitas Gadjah Mada, 2014
We do theoretical study of properties of outer crust of neutron stars from Hartree Fock Bogoliubo... more We do theoretical study of properties of outer crust of neutron stars from Hartree Fock Bogoliubov (HFB) mass models approximation at temperature limit to zero. This HFB mass models are studied by mass models HFB-19, HFB-20 and HFB-21 and using interaction force BSK-19, BSK-20 and BSK-21. This mass mod els are used for derive the properties of neutron star crust such as mass of outer crust, density level of outer crust and proper depth of outer crust. Neutron stars model will be studied in this Bachelor Thesis are neutron stars model have mass 1, 5M and radius 14 km.
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Pencatatan pesanan pada restoran atau rumah makan secara manual dapat meningkatkan peluangterjadi... more Pencatatan pesanan pada restoran atau rumah makan secara manual dapat meningkatkan peluangterjadinya kesalahan. Hal tersebut pernah terjadi pada Warung Deso Mbok Tum yang masih menggunakan sistempelayanan kasir secara manual. Selain itu, peluang terjadi kesalahan pada saat menyiapkan pesanan di dapur jugamenjadi kelemahan dari penggunaan sistem pelayanan secara manual. Oleh karena itu, diciptakan aplikasi yang dapatmemudahkan pelayanan kasir yang terintegrasi dengan dapur. Metode pembuatan aplikasi ini dengan urutan CDIO(Conceive, Design, Implement, Operation). Aplikasi yang diciptakan adalah Armyntik, yaitu aplikasi yang menggunakanAppSheet untuk pencatatan pesanan di kasir yang terintegrasi dengan dapur. Pesanan dari kasir akan otomatis masukpada database yang kemudian muncul pada monitor dapur. Sehingga pelayan pada dapur dapat menyiapkan pesanansesuai urutan yang muncul pada monitor. Pengguna dari aplikasi ini adalah manajer restoran/administrator, adminkasir, dan koordinator pengelolaan pesanan makanan. Kebutuhan utama dari aplikasi ini adalah fitur add, delete, edit,dan sync
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Penelitian ini merupakan gagasan teknologi yang berkaitan dengan perancangan dan implementasidash... more Penelitian ini merupakan gagasan teknologi yang berkaitan dengan perancangan dan implementasidashboard menggunakan software R-studio untuk melakukan analisis regresi linear berganda. Penduduk Indonesiaserta sebagian besar penduduk di dunia menggunakan beras sebagai bahan makanan utama mereka. Beras diIndonesia menempati posisi pertama sebagai bahan pangan pokok yang akan terus dibutuhkan manusia setiap saatbahkan dalam sepanjang waktu. Bila terdapat pergerakan harga yang terus meningkat karena ketidakseimbanganpermintaan serta kebutuhan maka masyarakat dengan kelas ke bawah hingga menengah menjadi pihak yang palingterkena akibat peningkatan harga tersebut. Regresi linear berganda diperlukan pada penelitian ini yaitu suatu metodeanalisis dan juga sebagai estimasi model untuk harga beras. Regresi linear berganda adalah metode yang digunakanuntuk mengetahui adanya hubungan antara dua atau lebih peubah prediktor pada peubah respon Tujuan pembuatanaplikasi ini adalah mempermudah masyarakat untuk menganalisis dan mendapatkan informasi mengenai estimasiharga beras dengan menggunakan dashboard regresi linear berganda. Tujuan penelitian yang dilakukan berdasarkanregresi linear berganda adalah untuk mendapati pengaruh beberapa peubah bebas terhadap peubah tidak bebas
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Terbatasnya pasar komoditas dan buruknya sistem promosi bagi masyarakat menyebabkan tidaktercapai... more Terbatasnya pasar komoditas dan buruknya sistem promosi bagi masyarakat menyebabkan tidaktercapainya penghasilan laba dari pemilik usaha kecil. Penjualan sederhana seperti menampilkan produk danmelakukan pemesana dengan menghubungi kontak yang dicantumkan, namun pemasaran seperti ini belum bisamenjangkau masyarakat secara keseluruhan, sehingga penulisan ini memberikan solusi belanja kebutuhan sehari-haridengan lebih mudah dengan inovasi baru yang ditawarkan adalah pembuatan website yang bekerja sama denganpemilik toko kelontong. Kegunaan website tersebut bertujuan memberikan solusi promosi produk yang dijual olehpemilik toko kelontong di daerah setempat, berawal dari kondisi lingkungan di daerah bahwa masyarakat kesusahanmenjangkau tempat perbelanjaan. Website ini bisa diakses tanpa biaya pendaftaran bagi penjual yang bergabungdengan “Daily Needs” yang memberikan wadah bagi pengusaha kecil dan konsumen dengan mudah membeli sembakodengan lebih efisien dengan menggunakan website yang sudah dibuat. Penggunaan perlengkapan sekolah dalamproses belajar mengajar memiliki kemampuan untuk menimbulkan minat, motivasi dan rangsangan, sehinggamempengaruhi psikologi siswa. Pengembangan bahan ajar pada website berpotensi meningkatkan motivasi belajarsiswa dan meningkatkan hasil belajar siswa. Penelitian ini bertujuan untuk menghasilkan materi pembelajaranberbasis web menggunakan Wix yang telah diuji kelayakannya dan dapat digunakan sebagai perangkat yang sesuaiuntuk membantu proses pembelajaran berbasis minyak gas di WSAN kelas XI 8 Kota Jambi. Jenis penelitian ini adalahpenelitian dan pengembangan dan pengembangan, metode yang digunakan untuk menghasilkan produk multimediapembelajaran. Data dari penelitian diperoleh dari angket kelayakan setelah divalidasi oleh ahli media, ahli materi,praktisi, dan umpan balik siswa terhadap media pembelajaran. Hasil penelitian dikumpulkan dari tim ahli dokumenterdan komunikasi, masing-masing dengan skor rata-rata ,38 (sangat positif) dengan tingkat 87,62%; ,5 (sangat bisadilakukan) pada 90,00% dan mengklaimsangat layak untuk diuji. Selanjutnya berdasarkan umpan balik dan review dari guru bidang penelitian kimia diperolehnilai rata-rata, 6 (sangat baik) dengan nilai 89,33% dan mendapat tanggapan sangat baik dari siswa siswa dengannilai siswa menjawab adalah 83,18%
Bulletin of Electrical Engineering and Informatics
The research consists of two parts, the first one is to design the dynamic plant model of polishi... more The research consists of two parts, the first one is to design the dynamic plant model of polishing unit using artificial neural network (ANN) type backpropagation, and the second one is to design a simulation of a close loop control system on Simulink consisting of logic solver, control valve and ANN polishing unit. The ANN polishing unit was trained and obtained the best model structure 4-24-3 with four inputs chemical oxygen demand (COD) influent, oil in water (OIW) influent, urea, and triple superphosphate (TSP), twenty-four hidden layer nodes, and three outputs (OIW effluent, COD effluent and dissolved oxygen (DO)). The mean square error (MSE) and root mean square error (RMSE) from ANN trained were 0.00485 and 0.06964, obtained by the second iteration. From the simulation results on Simulink by giving several scenarios in the logic solver condition table, the action is brought in the form of urea and TSP nutrition issued by the control valve. The values are used to achieve the ...
Bulletin of Electrical Engineering and Informatics, 2023
The research consists of two parts, the first one is to design the dynamic plant model of polishi... more The research consists of two parts, the first one is to design the dynamic plant model of polishing unit using artificial neural network (ANN) type backpropagation, and the second one is to design a simulation of a close loop control system on Simulink consisting of logic solver, control valve and ANN polishing unit. The ANN polishing unit was trained and obtained the best model structure 4-24-3 with four inputs chemical oxygen demand (COD) influent, oil in water (OIW) influent, urea, and triple superphosphate (TSP), twenty-four hidden layer nodes, and three outputs (OIW effluent, COD effluent and dissolved oxygen (DO)). The mean square error (MSE) and root mean square error (RMSE) from ANN trained were 0.00485 and 0.06964, obtained by the second iteration. From the simulation results on Simulink by giving several scenarios in the logic solver condition table, the action is brought in the form of urea and TSP nutrition issued by the control valve. The values are used to achieve the DO setpoint (2 mg/L), among others: when COD and OIW influent exceed the quality standard, COD exceeds the quality standard, and OIW does not exceed the quality standard, and the DO error is below zero.
Bulletin of Electrical Engineering and Informatics, 2024
Recently, a problem which often experienced by the Environmental Agencyis to monitor the quality ... more Recently, a problem which often experienced by the Environmental Agencyis to monitor the quality of industrial waste. The problem comes frommanual monitoring of wastewater and the high cost of laboratory tests foreach variable for the waste. This system is intended to develop a wastewatermonitoring system considering the state of the environment and technology.This system uses 5 types of sensors to measure the quality of wastewater.The sensor will display measurement data both offline via liquid crystaldisplay (LCD) and online via the website. For the pH sensor test, weobtained an error value approximately of 1.32% and accuracy of 98.68%.For the oxidation reduction potential (ORP) sensor test, we obtained an errorvalue of 1.4% with 98.6% accuracy. We obtained an error value of 0.22%with 99.78% accuracy for the temperature sensor test. For the total dissolvedsolid (TDS) sensor test, we obtained an error value of 1.02% with 98.98%accuracy. The color sensor is validated using a spectrometer to measure thevariation of color in remazol waste concentration. For the Client - Servercommunication test, the system has a delay of 2 seconds. One of theadvantages of using a web server is the system has minimum network traffic.
International Journal of Electrical and Computer Engineering (IJECE), 2024
The water quality is vital for the vannamei shrimp pond's productivity. Manual monitoring at Gunu... more The water quality is vital for the vannamei shrimp pond's productivity. Manual monitoring at Gunung Anyar's vannamei shrimp pond is timeconsuming, ineffective, and potentially harmful. In this research, we developed a real-time monitoring system for the water quality of the vannamei shrimp pond. This monitoring system is integrated with a solarbased aerator. To address this, water quality monitoring in a solar-based aerator system tracks the degree of acidity (pH), temperature, and total dissolved solids (TDS) remotely using a website and real-time mobile phone Android application with 98.57% accuracy and 1.43% error. Seven days of data revealed the degree of acidity between 6.92 and 7.34 is indicated poor conditions of the pond While the temperatures from 23.59 °C to 38.32 °C, and TDS from 628.65 to 652.34 ppm indicate the good condition of the shrimp pond. This real-time monitoring system can help vannamei shrimp farmers monitor the actual conditions of their ponds
Lamp automation is utilized to adjust the lighting in the classroom by adjusting to the level of ... more Lamp automation is utilized to adjust the lighting in the classroom by adjusting to the level of sunlight intensity outside the classroom. The light intensity will be adjusted to the utilization of lights as indicated by the need to enlighten a room. Therefore, this research aims to depict the design of a light intensity measurement system using a BH1750 sensor that will be carried out to measure the intensity of sunlight in units of light (lux). The signal from the sensor will be transmitted to a mini pc which functions to process measurement data and display it on the graphical user interface (GUI). As a result, the sensor will instruct the dimmer as an actuator to control the classroom lights according to the lighting from the sun. This system is already installed in the classroom and can save energy around 35 kWh a year.
Zenodo (CERN European Organization for Nuclear Research), 2023
The continuous use of boilers in the manufacture spun pile concretes company causes increased exh... more The continuous use of boilers in the manufacture spun pile concretes company causes increased exhaust gas emissions such as NOX gas from boiler combustion. In order to reduce NOX gas emission, clean water is used in the absorption process to tie the gases. The water resulting from the NOX gas binder will change color to become more concentrated which makes the water saturated in binding NOX gas. It is necessary to change the water in the tub shelter. Meanwhile the process of replacing cloudy water from tub shelter is still done manually. Therefore, in this research, a monitoring and control system for water turbidity is designed to improve the performance of the NOX gas binder. The monitoring system designed using a 16x2 LCD as a GUI will display the turbidity value on the NTU scale, while the control system designed uses Arduino Uno as a microcontroller and then uses a solenoid valve as an actuator to regulate the flow rate of water. Turbidity sensor type SEN-0189 is used as a water turbidity sensor and using a float switch to control the water level in the reservoir. The results show that the system is able to reduce the turbidity of the water from 250 NTU on the to 114 NTU.
Jurnal Otomasi Kontrol dan Instrumentasi
In the digital transformation of manufacturing and service companies towards Industry 4.0, it wil... more In the digital transformation of manufacturing and service companies towards Industry 4.0, it will require the presentation of digital information as cognitive support for their work. Pupuk Indonesia encourages its subsidiaries to implement digitalization innovations to strengthen subsidiary synergy, namely the implementation of the Digital Fertilizer system. Digital Fertilizer is a system that functions to monitor factory performance online which is useful to support increasing the reliability of production facilities. Therefore, PT Pupuk Indonesia Utilitas Gresik Gas Co-Generation Plant (GGCP) implemented the innovation suggested by PT Pupuk Indonesia (Persero). In mid-2022, the e-Monitoring and e-Logsheet projects started. In this study, we will discuss the implementation of e-Monitoring and e-Logsheet at the GGCP Factory.
Sewagati
Produksi tempe di Bagusari, Keluarahan Jogotrunan, Kabupaten Lumajang sudah ada sejak sekitar 75 ... more Produksi tempe di Bagusari, Keluarahan Jogotrunan, Kabupaten Lumajang sudah ada sejak sekitar 75 tahun yang lalu. Hampir 90% masyarakat Bagusari memproduksi dan menjual tempe sebagai pekerjaan utama. Kendala yang biasanya dihadapi oleh produsen tempe yaitu faktor cuaca. Proses pematangan tempe yang dipengaruhi cuaca dan suhu lingkungan berkaitan dengan proses fermentasi tempe. Produsen masih menggunakan cara konvensional pada proses fermentasi tempe, maka solusi untuk mengatasinya, yaitu dengan menggantikan cara konvensional (manual) tersebut menjadi otomatis agar suhu dan kelembapan pada proses fermentasi tetap terjaga. Berangkat dari keluhan UMKM produsen tempe di Bagusari maka pada abdimas dibuat mesin oven untuk pengendali suhu dan kelembapan pada proses fermentasi tempe dan dilengkapi modul Internet of Things sebagai upaya optimalisasi waktu produksi tempe. Dengan mesin oven diperoleh hasil bahwa fermentasi kedelai dengan massa 250 gram menggunakan alat lebih cepat 11,4 jam dib...
IOP Conference Series: Earth and Environmental Science
The operational conditions of the anaerobic bioreactor can be predicted using three parameters, s... more The operational conditions of the anaerobic bioreactor can be predicted using three parameters, such as biogas pressure, biogas mass flow rate, and methane gas content. This research will present a monitoring system for the operational conditions of an anaerobic bioreactor through the measurement of those operational parameters based on knowledge data. The knowledge-based monitoring system is equipped with an interface for connectivity with pressure sensor, mass flow rate and methane gas content sensor, so that it can monitor the condition of the bioreactor in real time. The implementation of bioreactor monitoring is applied at bioreactors in Pakal Benowo Forest, Surabaya. The trial test was carried out under three different conditions: In the morning (around 08.00 AM) indicated information on the methane gas content of 72.5% LEL, biogas pressure 7.3 kPa and mass flow rate biogas 0.3 liters per minute. The second one during the day (around 11.00 AM) indicates information on the meth...
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON FRONTIER OF DIGITAL TECHNOLOGY TOWARDS A SUSTAINABLE SOCIETY
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON FRONTIER OF DIGITAL TECHNOLOGY TOWARDS A SUSTAINABLE SOCIETY
JURNAL OTOMASI KONTROL DAN INSTRUMENTASI , 2023
Dalam transformasi digital perusahaan manufaktur maupun jasa menuju Industri 4.0, maka dibutuhkan... more Dalam transformasi digital perusahaan manufaktur maupun jasa menuju Industri 4.0, maka dibutuhkan penyajian informasi digital sebagai dukungan kognitif untuk pekerjaan mereka. Pupuk Indonesia mendorong anak perusahaan untuk menerapkan inovasi digitalisasi untuk memperkuat sinergi anak perusahaan yaitu penerapan sistem Digital Fertilizer. Digital Fertilizer merupakan sistem yang berfungsi untuk memantau performa pabrik secara online yang berguna untuk mendukung peningkatan keandalan fasilitas produksi. Oleh karena itu, PT Pupuk Indonesia Utilitas Pabrik Gresik Gas Co-Generation Plant (GGCP) menerapkan inovasi yang telah disarankan oleh PT Pupuk Indonesia (Persero). Pada pertengahan tahun 2022, proyek e-Monitoring dan e-Logsheet telah dimulai. Pada penelitian ini, dibahas implementasi e-Monitoring dan e-Logsheet pada Pabrik GGCP.
Res Militaris, 2023
The continuous use of boilers in the manufacture spun pile concretes company causes increased exh... more The continuous use of boilers in the manufacture spun pile concretes company causes increased exhaust gas emissions such as NOX gas from boiler combustion. In order to reduce NOX gas emission, clean water is used in the absorption process to tie the gases. The water resulting from the NOX gas binder will change color to become more concentrated which makes the water saturated in binding NOX gas. It is necessary to change the water in the tub shelter. Meanwhile the process of replacing cloudy water from tub shelter is still done manually. Therefore, in this research, a monitoring and control system for water turbidity is designed to improve the performance of the NOX gas binder. The monitoring system designed using a 16x2 LCD as a GUI will display the turbidity value on the NTU scale, while the control system designed uses Arduino Uno as a microcontroller and then uses a solenoid valve as an actuator to regulate the flow rate of water. Turbidity sensor type SEN-0189 is used as a water turbidity sensor and using a float switch to control the water level in the reservoir. The results show that the system is able to reduce the turbidity of the water from 250 NTU on the to 114 NTU.
2021 International Conference on Advanced Mechatronics, Intelligent Manufacture and Industrial Automation (ICAMIMIA), 2021
The content of methane gas (CH4) in biogas varies depending on livestock feed and the weather aro... more The content of methane gas (CH4) in biogas varies depending on livestock feed and the weather around the bioreactor, so that it will have an impact on the heat generated in the combustion chamber of the electric generator. For this reason, it is necessary to measure the content of methane gas in biogas. The information on the content of methane gas in biogas is very useful for regulating the ratio of air supply and biogas supply in maintaining the quality of the heat produced in the combustion chamber. So that the operation of the electric generator can be maintained. The methane gas content device consists of a methane gas sensor, a data processing circuit and a personal computer equipped with a GUI (Graphical User Interface), the measurement data can be integrated with the ratio control program on a PC which also functions as a controller. So that the PC can generate a control signal to adjust the ratio of air supply and biogas supply to the biogas as a power electric generator.
IOP Conference Series: Earth and Environmental Science, 2022
Incomplete combustion process from boiler in palm oil processing industry usually discharged into... more Incomplete combustion process from boiler in palm oil processing industry usually discharged into the air in the form of black smoke due to the high water contain in the fuel of the boiler which will pollute the air. With this problem the research was conducted of designing a simulation of fuel dryer to dry out the boiler fuel before it used by utilizing the exhaust heat of the combustion system in the boiler. The simulation design of the fuel dryer is based on computational fluid dynamic (CFD) with parameters control are air velocity and heat temperature of fuel dryer. The results obtained the distribution of air velocity in the dryer has a value range of 0-40 m/s with the highest velocity occurring when hot exhaust air enters the dryer while the temperature distribution inside the dryer has a value range of 90-270 °C with the highest temperature appearing around hot air inlet exhaust and the lowest temperature appears in the hot air outlet section of the dryer.
Universitas Gadjah Mada, 2014
We do theoretical study of properties of outer crust of neutron stars from Hartree Fock Bogoliubo... more We do theoretical study of properties of outer crust of neutron stars from Hartree Fock Bogoliubov (HFB) mass models approximation at temperature limit to zero. This HFB mass models are studied by mass models HFB-19, HFB-20 and HFB-21 and using interaction force BSK-19, BSK-20 and BSK-21. This mass mod els are used for derive the properties of neutron star crust such as mass of outer crust, density level of outer crust and proper depth of outer crust. Neutron stars model will be studied in this Bachelor Thesis are neutron stars model have mass 1, 5M and radius 14 km.
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Pencatatan pesanan pada restoran atau rumah makan secara manual dapat meningkatkan peluangterjadi... more Pencatatan pesanan pada restoran atau rumah makan secara manual dapat meningkatkan peluangterjadinya kesalahan. Hal tersebut pernah terjadi pada Warung Deso Mbok Tum yang masih menggunakan sistempelayanan kasir secara manual. Selain itu, peluang terjadi kesalahan pada saat menyiapkan pesanan di dapur jugamenjadi kelemahan dari penggunaan sistem pelayanan secara manual. Oleh karena itu, diciptakan aplikasi yang dapatmemudahkan pelayanan kasir yang terintegrasi dengan dapur. Metode pembuatan aplikasi ini dengan urutan CDIO(Conceive, Design, Implement, Operation). Aplikasi yang diciptakan adalah Armyntik, yaitu aplikasi yang menggunakanAppSheet untuk pencatatan pesanan di kasir yang terintegrasi dengan dapur. Pesanan dari kasir akan otomatis masukpada database yang kemudian muncul pada monitor dapur. Sehingga pelayan pada dapur dapat menyiapkan pesanansesuai urutan yang muncul pada monitor. Pengguna dari aplikasi ini adalah manajer restoran/administrator, adminkasir, dan koordinator pengelolaan pesanan makanan. Kebutuhan utama dari aplikasi ini adalah fitur add, delete, edit,dan sync
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Penelitian ini merupakan gagasan teknologi yang berkaitan dengan perancangan dan implementasidash... more Penelitian ini merupakan gagasan teknologi yang berkaitan dengan perancangan dan implementasidashboard menggunakan software R-studio untuk melakukan analisis regresi linear berganda. Penduduk Indonesiaserta sebagian besar penduduk di dunia menggunakan beras sebagai bahan makanan utama mereka. Beras diIndonesia menempati posisi pertama sebagai bahan pangan pokok yang akan terus dibutuhkan manusia setiap saatbahkan dalam sepanjang waktu. Bila terdapat pergerakan harga yang terus meningkat karena ketidakseimbanganpermintaan serta kebutuhan maka masyarakat dengan kelas ke bawah hingga menengah menjadi pihak yang palingterkena akibat peningkatan harga tersebut. Regresi linear berganda diperlukan pada penelitian ini yaitu suatu metodeanalisis dan juga sebagai estimasi model untuk harga beras. Regresi linear berganda adalah metode yang digunakanuntuk mengetahui adanya hubungan antara dua atau lebih peubah prediktor pada peubah respon Tujuan pembuatanaplikasi ini adalah mempermudah masyarakat untuk menganalisis dan mendapatkan informasi mengenai estimasiharga beras dengan menggunakan dashboard regresi linear berganda. Tujuan penelitian yang dilakukan berdasarkanregresi linear berganda adalah untuk mendapati pengaruh beberapa peubah bebas terhadap peubah tidak bebas
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI), 2021
Terbatasnya pasar komoditas dan buruknya sistem promosi bagi masyarakat menyebabkan tidaktercapai... more Terbatasnya pasar komoditas dan buruknya sistem promosi bagi masyarakat menyebabkan tidaktercapainya penghasilan laba dari pemilik usaha kecil. Penjualan sederhana seperti menampilkan produk danmelakukan pemesana dengan menghubungi kontak yang dicantumkan, namun pemasaran seperti ini belum bisamenjangkau masyarakat secara keseluruhan, sehingga penulisan ini memberikan solusi belanja kebutuhan sehari-haridengan lebih mudah dengan inovasi baru yang ditawarkan adalah pembuatan website yang bekerja sama denganpemilik toko kelontong. Kegunaan website tersebut bertujuan memberikan solusi promosi produk yang dijual olehpemilik toko kelontong di daerah setempat, berawal dari kondisi lingkungan di daerah bahwa masyarakat kesusahanmenjangkau tempat perbelanjaan. Website ini bisa diakses tanpa biaya pendaftaran bagi penjual yang bergabungdengan “Daily Needs” yang memberikan wadah bagi pengusaha kecil dan konsumen dengan mudah membeli sembakodengan lebih efisien dengan menggunakan website yang sudah dibuat. Penggunaan perlengkapan sekolah dalamproses belajar mengajar memiliki kemampuan untuk menimbulkan minat, motivasi dan rangsangan, sehinggamempengaruhi psikologi siswa. Pengembangan bahan ajar pada website berpotensi meningkatkan motivasi belajarsiswa dan meningkatkan hasil belajar siswa. Penelitian ini bertujuan untuk menghasilkan materi pembelajaranberbasis web menggunakan Wix yang telah diuji kelayakannya dan dapat digunakan sebagai perangkat yang sesuaiuntuk membantu proses pembelajaran berbasis minyak gas di WSAN kelas XI 8 Kota Jambi. Jenis penelitian ini adalahpenelitian dan pengembangan dan pengembangan, metode yang digunakan untuk menghasilkan produk multimediapembelajaran. Data dari penelitian diperoleh dari angket kelayakan setelah divalidasi oleh ahli media, ahli materi,praktisi, dan umpan balik siswa terhadap media pembelajaran. Hasil penelitian dikumpulkan dari tim ahli dokumenterdan komunikasi, masing-masing dengan skor rata-rata ,38 (sangat positif) dengan tingkat 87,62%; ,5 (sangat bisadilakukan) pada 90,00% dan mengklaimsangat layak untuk diuji. Selanjutnya berdasarkan umpan balik dan review dari guru bidang penelitian kimia diperolehnilai rata-rata, 6 (sangat baik) dengan nilai 89,33% dan mendapat tanggapan sangat baik dari siswa siswa dengannilai siswa menjawab adalah 83,18%
Bulletin of Electrical Engineering and Informatics
The research consists of two parts, the first one is to design the dynamic plant model of polishi... more The research consists of two parts, the first one is to design the dynamic plant model of polishing unit using artificial neural network (ANN) type backpropagation, and the second one is to design a simulation of a close loop control system on Simulink consisting of logic solver, control valve and ANN polishing unit. The ANN polishing unit was trained and obtained the best model structure 4-24-3 with four inputs chemical oxygen demand (COD) influent, oil in water (OIW) influent, urea, and triple superphosphate (TSP), twenty-four hidden layer nodes, and three outputs (OIW effluent, COD effluent and dissolved oxygen (DO)). The mean square error (MSE) and root mean square error (RMSE) from ANN trained were 0.00485 and 0.06964, obtained by the second iteration. From the simulation results on Simulink by giving several scenarios in the logic solver condition table, the action is brought in the form of urea and TSP nutrition issued by the control valve. The values are used to achieve the ...
Bulletin of Electrical Engineering and Informatics, 2023
The research consists of two parts, the first one is to design the dynamic plant model of polishi... more The research consists of two parts, the first one is to design the dynamic plant model of polishing unit using artificial neural network (ANN) type backpropagation, and the second one is to design a simulation of a close loop control system on Simulink consisting of logic solver, control valve and ANN polishing unit. The ANN polishing unit was trained and obtained the best model structure 4-24-3 with four inputs chemical oxygen demand (COD) influent, oil in water (OIW) influent, urea, and triple superphosphate (TSP), twenty-four hidden layer nodes, and three outputs (OIW effluent, COD effluent and dissolved oxygen (DO)). The mean square error (MSE) and root mean square error (RMSE) from ANN trained were 0.00485 and 0.06964, obtained by the second iteration. From the simulation results on Simulink by giving several scenarios in the logic solver condition table, the action is brought in the form of urea and TSP nutrition issued by the control valve. The values are used to achieve the DO setpoint (2 mg/L), among others: when COD and OIW influent exceed the quality standard, COD exceeds the quality standard, and OIW does not exceed the quality standard, and the DO error is below zero.