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<![CDATA[Rancang Bangun Prototype Deteksi Emergency Kondisi Pasien Penyakit Jantung Berbasis Sistem Benam ]]>
<![CDATA[Adi Siswanto]]>;
<![CDATA[A Sumarudin]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v2i1.27
<![CDATA[Vital signs can be seen human health than body temperature, breathing, blood pressure, and pulse. In this study, designed a prototype monitoring the health condition of the human heart Microcontroller-based devices using GPRS connection to be made in the form of a small box that consists of two measurement points. The steps taken to design a monitoring system jatung human health is to design a system of hardware and software. The sensor used is Pulse Sensor and IC-LM35 spread across two measurement points. These sensors as detection of heart rate, and changes in body temperature, and heart rate measurement results and the temperature will be read and processed in the microcontroller-based Arduino and the measurement results will be stored in SDcard to log data. If there is a weakening of the heart rate in humans this device will send an emergency signal to the server that is the hospital, then the hospital will conduct an emergency response to pasienya. The results of the measurement of body temperature has an error rate of 0.73% and heart rate measurement with ECG sensor error rate of 3% and with manual measurement error of 2%.]]>
<![CDATA[STUDI NUMERIK UMUR KELELAHAN (FATIGUE LIFE) PADA PROPELLER KAPAL PENANGKAP IKAN DENGAN KAPASITAS MESIN 24 HP ]]>
<![CDATA[Rizqi Ilmal Yaqin]]>;
<![CDATA[Angger Bagus Prasetiyo]]>;
<![CDATA[Pritiansyah Pritiansyah]]>;
<![CDATA[Muhammad Haritsah Amrullah]]>;
<![CDATA[Binsar Maruli Tua Pakpahan]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v6i1.245
<![CDATA[Propeller is part of a key component in fishing boat propulsion. Propeller can provide momentum to the fluid which can be a thrust on the ship. However, The failure of the propeller found prematurely. The failure of the propeller maybe because of overload on the propeller model so the fatigue life of the propeller becomes low. On the other hand, the rapid development of technology can simulate a design model to look for failures that occur. Finite Element Analysis is one of the designer solutions to determine the age of failure of a model and failure-prone areas in a model. This study uses propeller model data from fishing boat with engine 24HP in Dumai City TPI that always fail prematurely. The material used is copper alloy. While the drawing model uses Autodesk Inventor and Finite Element Analysis simulation using ANSYS R17.2 software with the number of model nodes is 51108 and the number of elements of the model is 26268. The results obtained from this study are Von Mises stress on the simulation model that is equal to 613.33 MPa to 0.01164 MPa. While the deformation value due to the effect of loading on the model is 5,3657 mm to 0 mm. These results affect the age of fatigue (fatigue life) on the model with the highest value 109 and the lowest 0. The results of the fatigue life value on the model affect the results of the level of damage and the safety number of the model with successive values of 1032 to 1 and 15 to 0.32446. The conclusion of the result is the propeller will fail prematurely.]]>
<![CDATA[Pengkondisian Udara Secara Otomatis Pada Proses Pasteurisasi Kumbung Jamur Merang Menggunakan ATMEGA8535 ]]>
<![CDATA[Wardika Wardika]]>;
<![CDATA[Karsid Karsid]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v2i1.25
<![CDATA[In this research designed an air conditioning system that is capable of reaching temperatures needed in the pasteurization process in miniature kumbung. The temperature required is approximately 70-80oC. The temperature was maintained for 4 hours. To maintain at that temperature control system designed 'on-off' by using a microcontroller ATMega 8535. This system works by shutting down the system when the temperature has been reached and revive the system when the temperature has dropped to the lower limit temperature setpoint. The results of this research in terms of the time required for the pasteurization process kumbung automatic mushroom faster at less than 5 hours compared kumbung regular mushrooms is 7-8 hours.]]>
<![CDATA[PENGARUH KOMPOSISI DAN WAKTU FERMENTASI CAMPURAN LIMBAH INDUSTRI TAHU DAN KOTORAN SAPI TERHADAP KANDUNGAN GAS METHANE PADA PEMBANGKIT BIOGAS ]]>
<![CDATA[Mohammad Nurhilal]]>;
<![CDATA[Purwiyanto Purwiyanto]]>;
<![CDATA[Galih Mustiko Aji]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v6i1.239
<![CDATA[Biogas is alternative energy produced from the anaerobic activity process of methane bacteria obtained by fermentation. Anaerobic activation is a sequence of microorganism processes breaking down biodegradable materials without oxygen. Biogas is mostly produced from cow dung and tofu industry waste that has the potential to contain methane (CH4), carbon dioxide (CO2) and hydrogen sulfide (H2S). To reduce the content of (CO2) and (H2S) and to increase the element of methane gas, the purification process is needed to do. Purification can be carried out by absorption techniques using water, NaOH solution, and zeolite/silica gel. The purpose of this study is to examine the methane gas content of variations in the composition of cow dung and tofu liquid waste and the fermentation time. The method used was an experiment by varying the composition of cow dung and tofu liquid waste by 40%: 60%; 50%: 50%; and 60%: 40%, as well as variations in the fermentation time of120, 168 and 216 hours of fermentation. The results showed that the highest methane gas content in the composition of a mixture of cow dung and tofu liquid waste was 50:50 in 168 hours of fermentation which was equal to 2.806%. The content of methane gas was influenced by the fermentation time, the pH conditions in the digester, and the intensity of stirring the biogas material in the digester.]]>
<![CDATA[Penerapan Termoelektrik Ganda pada Mesin Pendingin Air Minum sebagai Solusi Penghematan Energi ]]>
<![CDATA[Amrullah Amrullah]]>;
<![CDATA[Zuryati Djafar]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v1i1.34
<![CDATA[Modul termoelektrik merupakan suatu alat yang bekerja untuk menghasilkan dingin dengan memanfaatkan energi listrik. Pemilihan modul ini didasarkan pada beban kalor, beda temperatur dan daya listrik yang digunakan. Termoelektrik pendingin memiliki beberapa kelebihan diantaranya tidak berisik, mudah perawatan, tidak memerlukan banyak komponen tambahan dan ramah lingkungan. Penerapan termoelektrik dengan dua tingkat atau lebih yang dikombinasikan pada mesin pendingin merupakan metode penting untuk meningkatkan kinerja termoelektrik. Pada penelitian ini akan dilakukan pengujian kinerja modul termoelektrik pendingin pada dispenser air minum dengan memanfaatkan tegangan listrik DC. Model termoelektrik yang akan diuji adalah modul ganda yang dirangkai secara seri listrik dan paralel listrik dengan meninjau temperatur air yang didinginkan, daya listrik yang digunakan termoelektrik dan kecepatan pendinginan. Hasil penelitian menunjukkan bahwa modul terbaik dari segi temperatur air, kecepatan pendinginan dan penghematan energi listrik adalah termoelektrik ganda yang dirangkai secara seri pada tegangan 10 V. Hal ini dapat dilihat setelah 360 menit dengan temperatur air yang didinginkan 12oC, beda temperatur 28oC, kalor yang diserap 19.52810 W ,dan COP 1.25268.]]>
<![CDATA[Sistem Keamanan Pintu Laboratorium Berbasis Sensor Fingerprint dan Magnetic Lock ]]>
<![CDATA[Ardhi Wicaksono Santoso]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v6i1.236
<![CDATA[Abstrak-- Sistem pintu keamanan di laboratorium biasanya menggunakan kunci konvensional. Departemen Teknik Listrik dan Informatika, Perguruan Tinggi Kejuruan, Universitas Gadjah Mada memiliki 24 laboratorium dan puluhan ruang kelas. Semakin tinggi jumlah laboratorium dan ruang kelas, semakin banyak kunci yang dibutuhkan. Kendala yang dihadapi oleh asisten laboratorium adalah sulitnya menemukan kunci dan kehilangan kunci.Salah satu cara mengatasi masalah di atas membuat sistem penguncian pintu otomatis menggunakan sensor sidik jari. Sistem ini bertujuan untuk meningkatkan keamanan dan memfasilitasi akses untuk mengunci ruangan. Sistem ini dibuat menggunakan mikrokontroler sebagai prosesor dan sensor sidik jari. Identitas pengakses laboratorium disimpan dalam memori untuk membuka kunci pintu. Di pintu masuk, pintu kunci magnetik dipasang, yang terhubung ke sistem mikrokontroler. Sistem dapat berjalan seperti yang dimaksudkan dan dapat mendeteksi sidik jari yang tersimpan dalam memori. Sistem dapat mengidentifikasi sidik jari pengguna yang disimpan dalam memori dengan persentase keberhasilan 95% dari total 40 percobaan membuka kunci.Kata Kunci: Sidik Jari, Kunci Magnetic, Mikrokontroller, Sistem Kunci Pintu, Keamanan]]>
<![CDATA[ANALISA KINERJA MESIN REFRIGERASI RUMAH TANGGA DENGAN VARIASI REFRIGERAN ]]>
<![CDATA[Amrullah Amrullah]]>;
<![CDATA[Zuryati Djafar]]>;
<![CDATA[Wahyu Haryadi Piarah]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 3, No 2 (2017): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v3i2.55
<![CDATA[The most important component in the refrigerator is the refrigerant. The refrigerant absorbs heat from one side and throw it to another side through the mechanism of evaporation and condensation. This research aims to develop a refrigeration machine using different refrigerants that can be observed with the performance of the compressor, evaporator performance and COP, and hoped this research can show the installation as a medium of learning in applying the working principle of refrigerator. The research method was experimental at setting 8 refrigeration machine with data collection for the pressure and temperature of R-12 and R-134a were measured at the compressor inlet and outlet for 300 minutes. Determining the value of the enthalpy at any point by using REFPROP program. The use of different refrigerants in a refrigeration machine indicates that the refrigerant R-134a better than R-12. It can be seen after 300 minutes for R-134a, compressor performance 29.4 kJ / kg, the performance of the evaporator is 144.5 kJ / kg, COP 4.9 while for R-12 compressor performance 21.8 kJ / kg, the performance of the evaporator is 12.3 kJ / kg, COP 4.6.]]>
<![CDATA[STUDI KARAKTERISTIK REAKTOR GASIFIKASI TYPE DOWNDRAFT SERBUK KAYU DENGAN VARIASI EQUIVALENSI RATIO ]]>
<![CDATA[Suliono Suliono]]>;
<![CDATA[Bambang Sudarmanta]]>;
<![CDATA[Felix Dionisius]]>;
<![CDATA[Imam Maolana]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 3, No 2 (2017): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v3i2.60
<![CDATA[The depletion of fossil fuel reserves and natural gas makes people rethink to find alternative energy substitutes. Biomass is an alternative energy that is still abundant and has not been fully utilized. Gasification is one of alternative in gas making that change from solid fuel (wood powder) to thermochemical flammable gas. The research used downdraft gasification with experimental wood powder. The implementation of research was done in workshop of Indramayu State of Polytechnic, using batch system, it means once the import of biomass in the furnace from the beginning until the biomass out by 5 kg of wood powder biomass. Equivalence Ratio (ER) performed 4 variations namely: 1.01; 1.13; 1.34; 1.52. The recorded data are: temperature inside reactor, gasification operation time, air intake, syngas content, and flame visualization. The results obtained from the gasification process showed if the Equivalence Ratio (ER) is higher so the heating value of syngas decrease. LHV at ER 1.52 of 3980,306 Kj / m3 and the synthetis gas content decreased as much as 21,7806 %]]>
<![CDATA[Prototype of Monitoring and Control System of SCADA-based Water Tank Level ]]>
<![CDATA[Irvawansyah Irvawansyah]]>;
<![CDATA[Abdul Azis Rahmansyah]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v4i1.88
<![CDATA[The monitoring and water level controlling system is one sample of the simple industrial automation. Monitoring and controlling SCADA based water level can make it easier to do observation and controlling real time. This research have to design system water level control using ultrasonic sensors and equipped with display interface on laptop. This research is an R&D research that starts from the phase of problem identification, desing, and testing. Test results show good performance in accordance with the desired, where the water pump can be turned on when the water level at the reservoir reaches 10 cm and will be stopped automatically if the water level in tank reaches 70 cm. Monitoring and controlling water level can be done in real time on the laptop interface. So this system can be used as an alternative SCADA learning Media.]]>
<![CDATA[Perancangan Sistem Daur Ulang Pasir Pada Industri Pengecoran Logam Skala Kecil Untuk Peningkatan Efisiensi Biaya Dan Pengurangan Limbah ]]>
<![CDATA[Darma Firmansyah Undayat]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v4i1.77
<![CDATA[Metal casting is a part of the manufacturing process to produce products that generally have intricate shapes or materials that can not be processed by ordinary machining. The complexity of the product can be achieved with the use of sand molds and the use of cores that are also made of sand. The process of recycling sand can be done by mechanical, thermal and chemical recycling methods. The sand system that has been used to produce waste in the form of waste sand, dust and other contaminants. This waste can be used for several purposes, among others: reused as metal casting sand, road construction, brick material etc. So far, recycling has been done on large scale metal casting. For medium and small scale this is not done. Used sand is treated as waste that is discarded and not utilized. The manufacture of a sand recycling system for metal casting allows the reuse of waste sand for print sand with the technical properties of sand that meet the desired quality. It will also be able to reduce waste disposed by metal casting. The study began with a literature study to find out the characteristics of used sand. Next is to plan the recycling process of the former sand, which then continued with manual sand recycling experiment. Against the recycled sand is then tested to determine its properties. The results of recycling experiments and test results are then analyzed to serve as a basis for designing and manufacturing sand recycling machines for small scale metal casting. The type of sand to be recycled is the CO2 process sand with a base of quartz sand. Based on the research that has been done, the following conclusions are obtained: CO2 process recycling sand technology produced is in the form of recycling system and analysis / study on the quality of recycling; design prototype sand recycling machine CO2 process produced is a design engine jaw crusher and hammer mill machine design.]]>
