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Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Published by Institut Teknologi Nasional Yogyakarta
ISSN : 19075995     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation
Sub – Tema : Manajemen EBT (Energi Baru Terbarukan) & Energy Harvesting IOT Robotika Era Industry 4.0 Green Manufacturing Sains Terapan Berbasis Kecerdasan Teknologi Transportasi Cerdas & Ramah Lingkungan Rekayasa Material Maju & Teknologi Nano Teknologi Eksplorasi Mineral, Limbah & Lingkungan Sistem Peringatan Dini & Mitigasi Bencana Alam Teknologi Penanganan Pandemi Covid-19 Teknologi Informasi & Komunikasi Berkesinambungan Berbasis Layanan Technology in Teaching Technology of Online Business Perguruan Tinggi Dalam Pemberdayaan Masyarakat Pengembangan Ekonomi Kreatif di Indonesia Pembangunan Masyarakat Madani Siap Era Industri 4.0 & Society 5.0 Perencanaan Wilayah Kota Berkelanjutan Peran Teknologi Digital Pasca Pandemi & Perubahan Budaya Kerja Rekayasa Infrastruktur Berbasis Manajemen Resiko Bencana Proses Peer Review Editor akan menyerahkan tulisan yang telah diterima kepada tim redaksi untuk menentukan review bagi tulisan yang telah diterima. Pada dasarnya setiap tulisan akan direview oleh seorang ahli (mitra bestari) yang berkompeten di bidang yang menjadi fokus tulisan. Berdasar hasil review pertama, Editor akan menentukan prosedur lanjutan dari sebuah tulisan, diterima dengan perbaikan minor; diterima dengan perbaikan mayor, atau ditolak. Tulisan yang telah direview dan memerlukan perbaikan, akan segera dikirim kepada penulis melalui kontak yang tertera dalam tulisan. Selain substansi tulisan yang diatur dalam proses review, Redaksi juga berhak meminta perbaikan teknis, sebelum tulisan benar-benar diterbitkan. Waktu perbaikan harus memenuhi ketentuan seperti yang diberikan. Setelah proses perbaikan selesai, dan tulisan dinyatakan siap terbit, maka penulis juga harus menyerahkan pernyataan pengalihan hak cipta bagi distribusi tulisan kepada Redaksi Jurnal ReTII atau Penerbit. Semua tulisan yang masih dalam proses review, menjadi tanggung jawab redaksi dan redaksi akan bertanggung jawab terhadap kerahasiaan isi tulisan. Semua tulisan dan dokumen lain yang telah diserahkan kepada redaksi tidak akan dikembalikan
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 905 Documents
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SISTEM PENDEKTEKSI GAS CO RUANG PARKIR DI BASEMENT BERBASIS IOT Iyus Rusmana; Sudiana
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Parking spaces located in malls or in tall buildings if the ground conditions are not wide enough, usually placed in basement spaces. There are many drawbacks that can be found from this condition, especially in terms of air exchange in the basement area. The air exchange must be designed in such a way that the air condition remains fresh. In this study, CO gas levels were detected by Gas sergeant MQ7. From this sensor with various stages initiating the Air Fan to enter fresh air, initiating the Exhaust Fan, initiating the communication system. The communication system, both buzzer and related party communication, is carried out after the MQ7 gas sensor approaches a predetermined threshold. Because if humans resemble high levels of CO gas, the risk is death. CO gas is a type of hazardous / poisonous gas. The effect of carbon monoxide gas for levels of 50 ppm is still relatively safe, while more than that it can cause harmful effects to the body. If in small amounts, inhaling CO can cause headaches, dizziness, lightheadedness, weakness and nausea. The air exchange system is designed in such a way that the energy consumed is more efficient. To be able to activate the sensor to remove CO gas and enter fresh air is easier automatically with the IOT system Keyword: CO gas, buzzer, MQ7 gas sensor, IOT System
Model Predictive Control Untuk Kendali Konverter Buck-Boost Adelhard Beni Rehiara; Yanty Rumengan
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The process of converting DC electric current is not like converting an AC electric current. In the process of converting DC current, a DC-DC converter is needed. The buck-boost converter is a type of DC-DC converter that can either increase or decrease the output voltage simultaneously. MPC has interested mankind to be developed, in order to get a reliable type of controller. In this research, MPC has been developed utilizing the Laguerre function which is used as a buck-boost converter controller with the network length N = 4, the scale factor a= 0,7, the prediction horizon Np = 20 and the control horizon Nc = 2. Simulations were carried out with variations in load resistance between 10-40 Ω and setpoint alteration among 10-70 V. The simulation results show that MPC based on the Laguerre function can control the buck-boost converter system properly without overshoot with peak time and steady state about 0.001 second.
Studi Pemilihan Transportasi Publik di Kota Yogyakarta Dwi Kunto Nurkukuh
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

One of the problems in Yogyakarta is the increase in vehicle volume. One solution to reduce the volume of vehicles using private vehicles to public transportation. Public interest in public transportation in the city of Yogyakarta has decreased. The purpose of examining people's preferences in choosing the mode of public transportation in Yogyakarta City. The research method was carried out through a descriptive quantitative approach using the AHP method. Sampling was done by accidental sampling. Public transportation in Yogyakarta City is divided into 2 types, namely online and conventional public transportation modes. From the results of this study it can be seen that the people of Yogyakarta City prefer to use online public transportation modes. The people of the city of Yogyakarta in choosing a mode of public transportation consider the criteria in the following order: safety, comfort, time, then cost. The Online Public Transportation mode is preferred by the people of Yogyakarta City because it meets the criteria of cost (more economical), time (faster), easier to obtain), security (safer), and convenience (more comfortable) compared to conventional public transportation modes. The use of types of public transportation vehicles selected based on the highest order, namely online motorbike taxis, offline motorbike taxis, online car ojek, Trans Yogyakarta buses, pedicab, then conventional taxis.
Analisis Kestabilan Lereng dengan Pendekatan Probabilitas Longsor pada Penambangan Batubara Pit 8an East Block PT Indominco Mandiri Ilham Firmansyah; Barlian Dwinagara; Untung Sukamto; Bagus Wiyono; Tedi Agung Cahyadi
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The stability analysis of the design of the mining slope at Pit 8AN East Block PT. Indominco Mandiri refers to the old regulation, namely using the Safety Factor in determining the slopes are safe or not. Meanwhile, according to the Minister of Energy and Mineral Resources Decree No. 1827 K/30/MEM In 2018, the determination of safe slopes or not is based on the Safety Factor (SF) and the Probability of Failure (PoF). This research was conducted to analyze the stability of the final pit slope design so that the slope design can be categorized as safe or unsafe. Based on geotechnical investigations and field observations, the types of failure that occur are a circular failure for slopes highwall and plane failure for slopes lowwall. Slope stability analysis using the limit equilibrium method (Bishop Simplified) assisted by software Slide v.8.0 (Rocscience). Meanwhile, the probability of failure analysis uses the Monte Carlo method. Based on the analysis, it is known that the design of the final mining slope, both Slope A and Slope B, are categorized as safe. Variations were made to the design of the two final mining slopes by increasing the overall slope angle. On slope A by increasing the angle of the single-slope and on slope B by reducing the width of the berm. Thus, the value of the slope safety factor decreases to be more than or equal to 1.3, and the probability of failure value increases to a maximum limit of 10%. The impact of slope optimization is an increase in coal reserves. Keywords: Limit Equilibrium Method, Safety Factor, Probability of Failure, Slope A, Slope B
- Analisis Pemanfaatan Limbah B3 Batubara dan Gamping Serbuk sebagai Bahan Tambah Semen terhadap Kekuatan Beton Ifa Aulia Chusna; Muhammad Wildan Ilyasa; Rahmat Aditya; Tedy Agung Cahyadi; Heru Suharyadi
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The planning of 497 steam power plants (PLTU) is one solution in meeting the growing electricity needs (Strategic Plan of Directorate of Electricity, 2015). The development of PLTU in Indonesia, then the waste of Hazardous and Toxic Materials (B3) due to the remaining burning of coal in the form of fly ash and bottom ash is increasing. This B3 waste can pollute the environment if not managed and used properly. This research aims to find out optimal strength if the fly ash, bottom ash, and limestone are used for cement-added materials. The test used is a compression strength test. The molding time of the tube-shaped sample is 28 days with a volume of 196.40 cm3. Sample A as a sample indicator consisting of cement, sand, and gravel with a ratio of 1:2:3. Sample B is made of limestone, sample C is made of bottom ash, and sample D is made of fly ash. The comparison of cement-added materials in each sample was 5%, 15%, and 18% of the cement volume in sample A. The level of use of limestone as a cement added material is 5-15%, while the use of fly ash is optimal at 15-18% content, and the use of bottom ash is only optimal at 5% content.
IoT SMART HEALTH UNTUK MONITORING DAN KONTROL SUHU DAN KELEMBABAN RUANG PENYIMPAN OBAT BERBASIS ANDROID DI RUMAH SAKIT UMUM PUSAT Dr. SARDJITO YOGYAKARTA Sindung Hadwi Widi Sasono
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Penyimpanan bahan baku dan produk farmasi di gudang industri farmasi adalah salah satu tahapan penting dalam rangka menjaga kualitas produk agar tetap memenuhi persyaratan sampai produk di tangan konsumen. Terdapat banyak faktor yang mempengaruhi kondisi penyimpanan diantaranya yaitu suhu, kelembaban, kebersihan, pencahayaan, ventilasi atau kualitas udara serta adanya segregasi atau pemisah. Sistem ini terdiri dari monitoring dan kontrol suhu dan kelembaban pada ruang penyimpanan obat di gudang farmasi Rumah Sakit Umum Pusat Dr. Sardjito Yogyakarta. Penelitian ini membahas dan melakukan analisis data node sensor menggunakan beberapa jenis sensor suhu dan kelembaban berbasis Internet of Things. Node sensor menghasilkan data dan diproses dengan mikrokontroler NodeMCU ESP8266, data yang dihasilkan kemudian ditransmisikan oleh jaringan internet yang menggunakan MQTT broker dan disimpan dalam database. Hasil data tersebut kemudian dianalisa untuk memantau kondisi ruang penyimpanan obat. Sensor SHT30 bekerja paling baik dalam pengukuran suhu dengan rata-rata kesalahan yang paling kecil yaitu 0,043oC dan tingkat keakuratan pengukuran suhu paling tinggi sebesar 99,76% serta bekerja paling baik dalam pengukuran kelembaban dengan rata-rata kesalahan paling kecil yaitu 2,76% dan tingkat keakuratan pengukuran paling tinggi sebesar 95,49% dibandingkan dengan sensor DHT11 dan DHT22. Selain itu sistem kontrol bekerja dengan baik dalam melakukan kontrol terhadap AC dengan delay 3 detik dalam mengirimkan perintah hingga perintah dijalankan.
Performa Kontroler MPC Berbasis Fungsi Laguerre dan Kontroler PID Untuk Kendali Konverter Buck-Boost Adelhard Beni Rehiara; Yanty Rumengan
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The buck-boost converter is a device to change the amount of DC electricity. This device is very non-linear, so a better controller is needed to improve its performance. In this research, a Laguerre function based MPC has been made to control the converter. A simulation to determine the performance of the MPC on the buck-boost converter is done by comparing it with the existing PID controller. The simulation setting is done by providing an input voltage of 55V with loads of 25W, 60W and 100W within a setpoint of 100V. The simulation results show that the MPC has a high response speed in the order of milliseconds even though there is still an overshoot of 12.4% when compared to the PID controller which does not have overshoot but has a slower response with a little steady state errors and some spikes along the simulation.
Briket Biomassa Berbahan Dasar Serat TKKS Dengan Penambahan Serbuk Pinus dan Kanji pada Sistem Screw Ekstruder Terhadap Kekuatan Nofriady Handra
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Empty Fruit Bunches (EFB) are one of the solid wastes produced by the palm oil industry. One of the uses of EFB is as a raw material for making alternative briquettes to overcome dependence on fossil energy. In this research, the utilization of natural waste empty fruit bunches and pine bark which is processed into powder as an added material is an innovation to obtain the output of biomass briquettes for toughness and ignition quality. The addition of a certain amount of pine bark powder is an added function to see the quality of combustion. In the process of making bio-briquettes, the binder material is needed so that the briquettes are not easily crushed by 15% and the powder composition is 10%, 15%, and 20%. The tests carried out on the sample are drop test according to the ASTM D 440-86 R02 standard, and an ignition test to obtain the ash content produced from the combustion process. The results showed, at the composition of 20/15%, the ignition quality of the briquettes was higher in volume compared to the ignition of briquettes at the composition of 10/15% and 15/15%, and resulted in smoother and more uniform burning ash. On the other hand, in this composition too, the percentage of damaged briquette fibers during the drop test is 0.09%.
Lapisan condensed section pada batulempung gampingan Nanggulan, Pegunungan Kulonprogo, DIY siti nuraini
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Condensed section (cs) is defined as later stage of transgressive cycle which situated to the uppermost transgressive layer before reaching regressive phase of highstand systems tract (HST). This layer sometimes embraces to mfs (maximum flooding surface) as indicator of deepening depositional environment (Vail et all., 1984; Loutit et all., 1988). One of condensed section character is displayed by abundant glauconite minerals ((K, Na) (Fe3+, Al, Mg)2 (Si, Al)4O10 (OH)2) within fine grained lithology together with organic matters. These cs layer preserved in an oxidizing environment due to slow sedimentation process. In fact, within calcareous claystone of Nanggulan Formation is found accumulation of authigenic glauconite mineral. The purpose of this study to investigate condensed section (cs) character by microscopic observation of thin sections from Songgo and Watupuru of Nanggulan’s lithology. Basically, glauconite mineral shows spherical or ovoid shape, green color, dull or earthy luster, embedded to calcareous claystone and also filled larger benthonic foraminifera tests. Glauconite only encountered to the fine grain rocks (calcareous claystone) however none to the underlying or upperlying of cs layer itself in Nanggulan Formation (such as sandstone, conglomeratic sandstone or siltstone). If it presents there, very few and indicating a reworking process of altered clay and ferroan oxidic minerals. Condensed section in Nanggulan Formation merges with fossil layer of Nummulites djogyakartae (Mark, 1956) which is interpreted to be a key indicator of post transgressive event in depth approximately 20- 60 m (boundary of inner neritic to middle neritic). In other word, transgressive phase had ever happened during Nanggulan age (Middle Eocene) which caused a decreasing clastic sediment supply to the basin.
Analisa ANALISA STRUKTUR MIKRO, KANDUNGAN LIGNIN DAN HEMISELULOSA SERAT PELEPAH SAWIT AKIBAT PERLAKUAN ALKALI Hendriwan Fahmi; syaiful malik jenifer; anrinal anrinal
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The use of natural fibers from palm frond fibers in the manufacture of composite materials has its advantages, including high specific strength and modulus, low price, low density, lower population emissions, and is common or recyclable. The production of the material starts from the natural decomposition of the palm frond fibers. After the palm fronds have rotted, the process of extracting fibers is carried out using a cloth brush or beating them against the board so that the dirt is removed so that it gets the best fiber. Furthermore, the fibers were soaked in 5% NaOH solution for 1,2,3,4 hours and without NaOH treatment, after that, they were dried using an oven at 105 ° C. Tests carried out the lignin and hemicellulose content and the microstructure of the palm frond fibers with the effect of 5% NaOH treatment and without treatment. From the test results, it was found that the lowest lignin content was in 5% NaOH treatment for 4 hours 22.1030%, and the highest lignin content was in 5% NaOH treatment for 1 hour 29, 8694%, and the highest hemicellulose was found without NaOH treatment, namely 26.6343% and the lowest was the need for NaOH for 1 hour 22,1164%. As well as the results of research on the microstructure of palm frond fibers without treatment and with 5% NaOH treatment for 1,2,3, and 4 hours, there were cavities in the fibers. The longer the treatment, the cavities become more open

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