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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JITEK (Jurnal Ilmiah Teknosains) Jurnal Ilmiah Teknik Mesin "MEKANIK" Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknologi Informasi dan Komunikasi Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Pengabdian Kepada Masyarakat Jurnal Elektro dan Teknologi Informasi
Imadudin Harjanto
Universitas PGRI Semarang
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Public Health Social Sciences Veterinary Other

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ANALISA EFISIENSI TURBIN FRANCIS DI PLTM KAREKAN PAGENTAN BANJARNEGARA hariyanti, Anggun; Margono, Margono; Harjanto, Imadudin
MEKANIK: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2021): Juni - November 2021
Publisher : Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Medan (ITM)

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Abstract

Permasalahan dalam penelitian ini adalah mengetahui kinerja turbin pada PLTM Karekan dengan menganalisis efisiensi turbin francis pada PLTM Karekan, jika efisiensi turbin pada PLTM Karekan rendah atau kurang dari 80% maka perlu dilakukan pemeliharaan (Maintenance) pada turbin tersebut. Pemeliharaan merupakan tindakan merawat mesin atau peralatan pabrik dengan memperbaharui umur masa pakai dan kegagalan/kerusakan mesin.Untuk mengetahui efisiensi turbin kita harus mengetahui jenis turbin terlebih dahulu. Pemilihan jenis turbin dapat ditentukan berdasarkan kelebihan dan kekurangan dari jenis-jenis turbin. Pada tahap awal, pemilihan jenis turbin dapat diperhitungkan dengan mempertimbangkan parameter-parameter khusus yang mempengaruhi sistem operasi turbin, yaitu : Faktor tinggi jatuhan air efektif dan debit, Faktor daya (power) yang diinginkan berkaitan dengan head dan debit yang tersedia, Kecepatan (putaran) turbin yang akan ditransmisikan ke generator. Dari parameter-parameter tersebut, PLTM Karekan lebih memilih turbin francis dikarenakan turbin francis efektif untuk operasi pada head sedang yaitu 10 < H < 350. Pendekatan yang digunakan dalam penelitian ini adalah menggunakan pendekatan kuantitatif. Metode ini disebut metode kuantitatif karena data penelitian lebih fokus pada data-data numerikal (angka) yang diolah atau dianalisa dengan menggunakan metode statistika dengan bantuan software Excel dan SPSS. Setelah melukan analisa di PLTM Karekan Pagentan Banjarnegara sendiri mendapatkan nilai rata-rata efisiensi sebesar 88% yang artinya dapat dikatakan memiliki efisiensi tinggi sehingga tidak perlu dilakukan pemeliharaan turbin dalam waktu dekat ini.
SISTEM KENDALI PERALATAN ON/OFF VIA WEB Muhammad Amiruddin; Imadudin Harjanto; Rio Seto Wardhana
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2014): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 5 2014
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Instrumentasi berbasis web adalah suatu sistem yang digunakan untuk memantau dan mengendalikan kondisi alam dan dapat dilakukan secara remote melalui media jaringan komputer. Pemantauan dapat meningkatkan efisiensi dan dapat mendukung fungsi pemeliharaan yang selalu dibutuhkan untuk menurunkan biaya. Dalam penelitian ini, dibangun perangkat keras berbasis IP dengan protokol HTTP dengan format data XML menggunakan modul Wiznet W5100 sebagai modul Ethernet yang dikendalikan oleh mikrokontroler ATMega32 dengan tatap muka SPI. Sebuah perangkat keras mempunyai 8 kanal relay yang digunakan untuk mengendalikan beban secara on/off.  Uji coba dan evaluasi hasil penelitian ini dilakukan dengan pengujian 3 buah perangkat keras dan 1 buah web server yang membentuk sebuah jaringan. Sebagai pusat kendali dan pemantauan, sebuah PC difungsikan sebagai web server  yang dibangun dengan platform PHP dan terhubung dengan basis data PostgreSQL 9.2. Pengujian sistem dilakukan dengan cara pembacaan status dan pengaturan relay dengan iterasi sebanyak 4008 kali, menghasilkan prosentase keberhasilan pembacaan status relay adalah sebesar 97%, prosentase keberhasilan pengaturan relay adalah sebesar 99,65%, dan waktu respon sistem sebesar 0,23s. Kata kunci: mikrokontroler, Wiznet W5100, instrumentasi berbasis web, kendali on/off
STUDI PENINGKATAN KADAR DISSOLVED OKSIGEN AIR, SETELAH DI INJEKSI DENGAN AERATOR KINCIR ANGIN SAVONIUS ARREUS, MENGGUNAKAN DO METER TYPE LUTRON DO-5510 Althesa Androva; Immadudin Harjanto
Jurnal Ilmiah Teknosains Vol 3, No 2 (2017): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (626.174 KB) | DOI: 10.26877/jitek.v3i2.1889

Abstract

Teknologi budidaya perikanan makin maju, semakin meningkat padat tebar, makin besar pula kebutuhan Aerasi. Namun alat aerator relatif mahal, baik harga beli maupun biaya operasionalnya.Disisi lain, arus angin di daerah pesisir sangat besar. Merupakan potensi yang sangat besar untuk energi terbaharukan, maupun untuk aerasi. Tujuan penelitian ini adalah untuk mengetahui kinerja dari aerator savonius darreus untuk meningkatkan kadar Desolve Oksigen dalam air. Aerator savonius darreius telah dicoba mampu berputar mulai kecepatan angin 2,5 M/S. Aerator savonius darreeius diuji pada tiga tempat yang berbeda, yaitu diuji pada akuarium, pada kolam terbuka, dan pada tambak pembibitan ikan bandeng. Metode pengukuran Desolve Oksigen pada penelitian ini menggunakan DO Meter Type Lutron DO-5510. Pada percobaan dalam akuarium, aerator ssavonius darreius mampu meningkatkan kadar Desolve Oksigen sebesar 0,7 Mg/L3 dalam 50 menit percobaan di siang hari.Pada percobaan dalam kolam terbuka, aerator ssavonius darreius mampu meningkatkan kadar Desolve Oksigen sebesar 0,2 Mg/L3 dalam 50 menit percobaan di siang hari.Pada percobaan dalam tambak pembibitan ikan bandeng, aerator ssavonius darreius belum mampu meningkatkan kadar Desolve Oksigen
IOT GATEWAY MENGGUNAKAN PROTOKOL MQTT PADA PERANGKAT KENDALI BERBASIS MODBUS-RTU Imadudin Harjanto
Jurnal Ilmiah Teknosains Vol 6, No 1 (2020): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.139 KB) | DOI: 10.26877/jitek.v6i1.5957

Abstract

One of the main goal of IoT implementation is to integrate existing device to the global information and communication infrastructure. Nowadays, most of new product have been designated to be IoT ready with, some feature to easily integrated to the internet world. The challenging is how to integrate old existing devices which doesn’t support new communication protocol. One of example is Autonics TK4S, a temperature monitoring controller based on Modbus RTU serial line communication which is very usual in industry. This paper discussed the scenario how to implement IoT to the device with Modbus RTU communication protocol to integrate with global internet while still maintaining the Modbus and MQTT character: lightweight and flexibility. Next thing to discuss is the security problem in Modbus. After some examination, we get result that security can be implemented by adding authentication. Meanwhile, the lightweight and flexibility still can be maintained.  In our scenario, latency of the system is still low at less than 0,3 s for Modbus-MQTT broker-client communication and less than 0,01 s for the MQTT communication alone. Data rate is still can be maintained at less than 9kbps.
Feasibility Study of Solar Power Generation System for Public Street Lighting Muhammad Fadel Ibrahim; Imadudin Harjanto; Bambang Hadi Kunaryo
Advance Sustainable Science Engineering and Technology Vol 4, No 2 (2022): May-October
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v4i2.13378

Abstract

One of the uses of electricity that is widely used by society today is as a source of lighting. The increasing level of community mobility makes all activities require lighting. One part that is important and requires lighting is a highway or public road. PJU is a lighting lamp that is public (for the common good) and is usually installed on roads and certain places such as parks and other public places. PJU (street lighting) or road lighting is a light source that is installed as street lighting at night. Public street lighting using solar power is a cheap and economical alternative to be used as a source of lighting electricity because it uses a new and unlimited renewable energy source that comes from nature, namely solar energy. This study aims to determine the feasibility of solar street lighting in the future as a substitute for conventional public street lighting in the future by looking at the Net present cost, and Break even point assisted by HOMER software version 3.10.3. And the results obtained from the calculation of the Net present cost of conventional street lighting costs less, which is only Rp. 30,245,473 and the Net present cost of solar street lighting costs an initial investment of Rp. 128,341,312 and the BEP (Break even point) graph that has not been found to break even. 
Pendampingan Pembenahan Instalasi Sistem CCTV untuk Masjid Baitul Rohmah Pudak Payung Semarang Muhammad Amiruddin; Imadudin Harjanto; Bambang Hadi Kunaryo; Margono Margono
PaKMas: Jurnal Pengabdian Kepada Masyarakat Vol 3 No 1 (2023): Mei 2023
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/pakmas.v3i1.1653

Abstract

Apart from being a place of worship, the mosque has a function to improve community relations in the environment around the mosque in particular. In order to improve community relations, it is necessary to hold several activities involving the community under the auspices of the mosque. In order for community activities to take place, the mosque is equipped with several assets such as electronic devices, sound systems, air conditioning, infaq contacts/charity boxes and some other supporting furniture. So mosque assets need to be maintained in the security aspect. To support the security aspects of the mosque's environment, in this service there will be mentoring and training on the CCTV (Close Circuit Television) system. This service activity is carried out by technicians, mosque congregation and accompanied by a service team, including; needs assessment, field survey, network design and layout, preparation of budget plans and device requirements, device installation and device firmware settings. After being agreed by the team, this service installed 5 camera points to monitor 4 areas, parking area, yard, congregation area and priest area. From the results of this activity, that the installation of cameras at 5 points in accordance with the planned survey results and needs assessment can provide comprehensive monitoring of environmental conditions outside and inside the mosque, so that it can better guarantee security in the mosque and its surroundings.
STUDI ANALISA PENGGUNAAN BATERAI LI-ION DAN LI-PO PADA SISTEM IOT HIDROPONIK Khalif Zusrifal Rifal; Adhi Kusmantoro; Imadudin harjanto
JETI (Jurnal Elektro dan Teknologi Informasi) Vol. 1 No. 1 (2024): APRIL
Publisher : Program Studi Teknik Elektro Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jeti.v1i1.580

Abstract

Seiring berkembangnya teknologi modern, kebutuhan akan listrik menjadi kebutuhan yang semakin mendasar. Baterai merupakan perangkat yang sangat dibutuhkan bagi peralatan elektronik untuk menyimpan energi. Peran baterai sangat penting, salah satunya dalam penggunaan sistem IoT, terutama jika diaplikasikan di daerah yang memiliki keterbatasan energi listrik. Konsumsi daya listrik pada baterai dipengaruhi oleh desain dari sistem IoT tersebut. Pada penelitian ini penulis melakukan analisis ketahanan baterai pada sistem monitoring hidroponik dengan menggunakan dua jenis baterai yang berbeda: Baterai Lithium-polymer (Li-Po) dan Lithium-ion (Li-ion) dengan kapasitas masing-masing 12V 5000mAH. Pada pengujian ini baterai akan digunakan untuk menyuplai sistem pemantauan hidroponik berbasis Internet of Things (IoT). Dari penelitian tersebut diketahui nilai efisiensi baterai paling rendah yaitu baterai Li-Po dengan durasi pengiriman data 5 detik yaitu sebesar 8,9% dan nilai efisiensi baterai paling tinggi adalah baterai Li-Ion dengan durasi pengiriman data 15 menit yaitu sebesar 77%
RANCANGAN BANGUN KEBUTUHAN ACESSPOINT DI GEDUNG UTAMA UNIVERSITAS PGRI SEMARANG Kunaryo, Bambang Hadi; Harjanto, Imadudin; Amiruddin, Muhammad
JURNAL TEKNOLOGI INFORMASI DAN KOMUNIKASI Vol 14 No 2 (2023): September
Publisher : UNIVERSITAS STEKOM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/jtikp.v14i2.893

Abstract

Penyebaran jaringan internet menggunakan wirelles sekarang ini sangatlah besar, Apalagi jika di dalam sarana pendidikan tinggi, tentu sangat dibutuhkan. Koneksi jaringan internet tidak hanya dibutuhkan oleh mahasiswa, namun juga di butuhkan untuk layanan tenaga pendidik dan semua dosen dalam melaksanakan pendidikan. Penyebaran internet yang efektif sangatlah diperlukan agar dapat menjangkau ke seluruh ruangan di gedung utama. Gedung utama Universitas PGRI Semarang sangatlah unik, karena berbentuk seperti bentuk U, hal ini perlu dilakukan perancangan kebutuhan yang tepat. Jumlah acesspoint dapat efektif melayani ke seluruh pengguna yang menyebar di segala ruangan. Dari hasil perencanaan diperoleh hasil bahwa untuk dapat melayani sebanyak 400 orang, dengan ukuran panjang lorong gedung 180 m, lebar 8 m, tinggi 4 m. Maka dibutuhkan 3 buah acesspoint di setiap lorong.
DESAIN SISTEM KENDALI SUHU RUANG PEMANAS DENGAN METODE ULTIMATE CYCLE Muhammad Amiruddin; Imadudin Harjanto; Bambang Hadi Kunaryo
JURNAL TEKNOLOGI INFORMASI DAN KOMUNIKASI Vol 15 No 2 (2024): September
Publisher : UNIVERSITAS STEKOM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/jtikp.v15i2.895

Abstract

A room heating device equipped with a temperature control system that will be used to regulate the room temperature so that it is stable at a certain value. Before designing the hardware and setting the control methods that will be used, to simplify the design, a system response simulation is first carried out. In order to simulate the response of the temperature control system in the heating room, a mathematical model of the heating room and the temperature control system used is needed. Therefore, an approach using the FOPDT method is used to determine the mathematical model of the heating space. After obtaining a suitable mathematical model for the heating room in this research case, it is continued by providing a control gain (P-I-D) so that the performance of the heating room control system meets the requirements. To get the gain value (P-I-D), tuning is carried out using the ultimate cycle method. Providing Kp=0.06 to this temperature control system provides a steady state error performance of 5°C, rise time of 247 seconds and overshoot of 10°C. The addition of 1/Ti = 0.00133 and the change in Kp = 0.027 resulting from ultimate cycle tuning, have the effect of eliminating the steady state error but increasing the rise time to 530 seconds. The addition of Td = 112.5 and changes in 1/Ti = 0.0022 and Kp = 0.036 resulting from ultimate cycle tuning, have the effect of reducing the rise time to 380 seconds, but increasing the overshoot to 18°C
OPTIMASI MODEL DEEP LEARNING UNTUK RASPBERRY MENGGUNAKAN PRUNING DAN KUANTISASI Harjanto, Imadudin; Amiruddin, Muhammad; Kunaryo, Bambang Hadi
JURNAL TEKNOLOGI INFORMASI DAN KOMUNIKASI Vol 15 No 2 (2024): September
Publisher : UNIVERSITAS STEKOM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/jtikp.v15i2.898

Abstract

Artificial intelligence with deep learning. Has been widely used at many field especially in computer vision technology. It can be found in many purpose and variety of device for it’s deplayment. Deep learning is a neural network that is arranged in very deep layers in order to extract information in more detail. However, with the high level of performance can be achieved, in other hand, another problem arises; the need for very large computing resources in the process. This study has objective to find method and strategies for optimizing edge device in order to continue implementing deep learning with good performance even with limited computing resources. This study uses pruning and quantization methods. After the conventional training process, additional treatment is carried out by reducing the layers and quantizing the weights to reduce the fractional numbers on each weight. At the final step, the conversion of the optimized model into a format suitable for Raspberry Pi 4 is carried out. The results of these experiment showed a significant increase in prediction latency of 2.8x faster and a decrease in file size to 13.74% smaller. This is very beneficial in the implementation of deep learning on Raspberry Pi which has minimal memory and computing capacity.
Co-Authors Adhi Kusmantoro Adhi Kusmantoro Androva, Althesa Bambang Hadi Kunaryo Carsoni Carsoni, Carsoni Hakim, Muhammad Afta Dzikril hariyanti, Anggun Harto Nuroso Hasto, Ken Irna Farikhah Khalif Zusrifal Rifal Margono Margono Margono Margono Margono Margono Muhammad Amiruddin Muhammad Amiruddin Muhammad Amiruddin Muhammad Fadel Ibrahim Nur Aksin Nur Aksin, Nur Rifal, Khalif Zusrifal Rio Seto Wardhana Slamet Supriyadi Ummi Kaltsum Yuris Setyoadi