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Actuators, IoT and IP Address as Training in Actuators, IoT and IP Address for Senior High School Teachers and StudentsBasic Industrial Instrumentation Waluyo, Waluyo; Widura, Andre; Aryanta, Dwi; Darlis, Arsyad Ramadhan; Subarna, Nana; Rustamaji, Rustamaji; Sawitri, Kania; Fauziah, Dini; Syahrial, Syahrial; Syafitri, Niken; Hadiatna, Febrian
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 1, No 1 (2020): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v1i1.10-24

The third mission of a university is a community service. Based on this mission, this paper presents the activity of community service. The activity was training for senior high school students and teachers. The subjects of the training are actuators, IoT, and IP address. These components or subsystems are very important basic industrial instrumentation for further automation. These subsystems are very correlated with each other. Some actuators are electric, hydraulic, and pneumatic types. There are many applications of IoT and IP addresses, such as smart grids and communications.

Studi Keandalan Ketersediaan Daya Pembangkit Listrik pada Jaringan Daerah â€œXâ€ SYAHRIAL, SYAHRIAL; SAWITRI, KANIA; GEMAHAPSARI, PARTRIANTI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 5, No 1: Published January - June 2017
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v5i1.93

ABSTRAKKeandalan tenaga listrik didefinisikan sebagai peluang dari suatu peralatan untuk beroperasi sesuai dengan fungsinya dalam suatu selang waktu tertentu dan dalam suatu kondisi operasi tertentu, sehingga dapat memenuhi kebutuhan listrik konsumen. Keandalan ketersediaan daya suatu sistem pembangkit dapat diketahui berdasarkan indeks keandalan yaitu LOLP (Loss of Load Probability) dan UE (Unserved Energy). Penelitian dilakukan dengan merancang 2 model konfigurasi sistem pembangkit berdasarkan nilai beban puncak, kemudian mengambil data laju kegagalan dan laju perbaikan dari masing-masing komponen sistem pembangkit yang selanjutnya dipakai untuk menghitung nilai FOR (Forced Outage Rate). Nilai FOR yang telah diperoleh digunakan untuk menghitung nilai indeks keandalan menggunakan metode segmentasi. Konfigurasi sistem pembangkit skenario ke-2 memiliki nilai indeks keandalan lebih kecil dibandingkan dengan konfigurasi sistem pembangkit skenario ke-1 yaitu dengan LOLP sebesar 0,0000088248 hari/tahun dan UE sebesar 0,0584 KWH/tahun dengan total perkiraan biaya pada konfigurasi ini sebesar Rp 587.567.108,00.Kata kunci: Keandalan, metode segmentasi, LOLP, FOR, UEABSTRACTThe reliability of electric power is defined as the chance of an apparatus to operate in accordance with its function in a certain interval of time and in a certain operating conditions, so as to meet the electricity needs of consumers. The reliability of a power generation system availability can be determined based on the reliability index is LOLP (Loss of Load Probability) and UE (Unserved Energy). The study was conducted by designing two models generating system configuration based on the value of the peak load, and then retrieve the data failure rate and the rate of repair of the individual components of the next generation system which is used to calculate the value FOR (Forced Outage Rate). FOR Value that has been obtained is used to calculate the reliability index using segmentation method. Generating system configuration scenarios to-2 has a reliability index value is smaller than the generating system configuration scenarios to-1 that is by LOLP of 0.0000088248 days / year and the EU amounted to 0.0584 KWH / year with a total estimated cost in this configuration Rp 587,567,108.00.Keywords: Reliability, segmentation method, LOLP, FOR, UE

Pemodelan pada Proses Cyclostationarity Berdasarkan Data Pasut Cilacap Tahun 2007-2015 Larasati S. Cendani; N.M.R.R. Cahya Perbani; Kania Sawitri
REKA GEOMATIKA Vol 2017, No 1
Publisher : Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar

ABSTRAK Sesuai prosedur dalam penentuan MSL sejati, pengamatan pasut dilakukan secara terus-menerus selama 18,61 tahun dengan selang waktu satu jam tanpa jeda. Pengamatan pasut tersebut bukanlah suatu hal yang mudah dan hampir tidak dapat untuk dilakukan, MSL yang digunakan untuk kepentingan teknis umumnya ditentukan berdasarkan data pengamatan pasut periode pendek selama 15 atau 29 hari. Periode pendek tersebut memiliki keterbatasan dalam mengakomodasi seluruh faktor yang mempengaruhi MSL. Hipotesis pada penelitian ini MSL bulanan juga memiliki sifat cyclostationarity berdasarkan penelitian pasang tinggi di Benoa, Bali yang memiliki sifat yang sama. Penelitian ini bertujuan memodelkan terjadinya proses cyclostationarity untuk dijadikan sebagai model koreksi mean sea level bulanan dan untuk mengetahui variasi yang terjadi. Pemodelan dilakukan menggunakan fungsi gelombang dua konstanta pasut periode panjang Sa dan Ssa menggunakan analisis harmonik kuadrat terkecil melalui Deret Fourier. Dari penelitian yang telah dilakukan diketahui bahwa model gelombang yang dihasilkan sudah 80% mewakili perilaku MSL bulanan dan simpangan maksimum terhadap MSL bulanan rata-rata sebesar 245 mm. Kata kunci: MSL bulanan, cyclostationarity, fungsi gelombang ABSTRACT In procedure to determine the true mean sea level (MSL), hourly tide measurement should be taken for 18,61 years continuously. That such measurement is not simple and barely possible to establish. In most technical cases, MSL is determined from shot period measurement 15 or 29 days. The limitation of that such short period data is in accommodating all factors with action MSL. In this study the monthly MSL is a cyclostationarity process like spring tides in Benoa, Bali is taken as the hypothesis. This study directed to model cyclostationarity process to build the model of monthly MSL and to find it’s variation. The modeling is accomplished using wave function two long period constituents (Sa and Ssa). Least square harmonic analysis by means of Fourier series is applied. It is found that the wave model from this study represent about 80% of monthly MSL behavior and the average of maximum deviation is 245 mm. Keywords: monthly MSL, cyclostationarity, wave function

Perancangan Transmitter Gelombang Akustik pada VLF Band untuk Bawah Air Kania Sawitri; Rustamaji Rustamaji; Rian Mahesa Putra
TELKA - Jurnal Telekomunikasi, Elektronika, Komputasi dan Kontrol Vol 4, No 1 (2018): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v4n1.11-23

Teknologi akustik saat ini banyak digunakan untuk keperluan sarana navigasi, komunikasi, dan pendeteksian. Sinyal akustik dapat dideteksi dan dihasilkan oleh perangkat transducer electroacoustic. Perangkat untuk mengubah energi akustik menjadi energi listrik disebut hydrophones atau received transducer, dan untuk mengubah energi elektrik menjadi energi akustik disebut proyektor atau transmit transducer. Dalam penelitian ini dilakukan perancangan dan realisasi transmitter (Tx) sinyal akustik pada very low frequency (VLF) band untuk bawah air, terdiri dari pulse signal generator, power amplifier, dan transmit transducer. Berdasarkan hasil pengukuran dan pengujian transmitter (Tx): Tx mampu membangkitkan sinyal suara (gelombang akustik) pada rentang frekuensi 12.67 s.d 33.68 kHz; tanpa pelindung anti air mampu memancarkan gelombang akustik (suara) pada rentang frekuensi 13.16 s.d 21.38 kHz, dengan pelindung anti air mampu memancarkan gelombang akustik (suara) pada rentang frekuensi 12.69 s.d 20.75 kHz, dan mampu memancarkan gelombang akustik (suara) di dalam air pada rentang frekuensi 13.10 s.d 18.91 kHz.

Prototipe Hydrophone untuk Komunikasi Bawah Air RUSTAMAJI, RUSTAMAJI; SAWITRI, KANIA; HIDAYAT, NUR WAHYU
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 6, No 1: Published January 2018
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v6i1.49

ABSTRAKDalam pencarian suatu obyek di bawah air dibutuhkan metode khusus yang digunakan dengan suara (gelombang akustik), dikarenakan suara dapat merambat dalam jarak jauh pada air. Frekuensi yang dapat diterima oleh SONAR bergantung pada alat penerima yang mengubah suara menjadi sinyal elektrik agar dapat mendeteksi frekuensi, alat penerima ini dinamakan hydrophone. Dalam penelitian ini dibuat perancangan prototipe hydrophone, yang tersusun dari transducer (akustik-elektrik) dan penguat. Berdasarkan perancangan yang telah dibuat prototipe hydrophone mampu menerima (menangkap) gelombang akustik pada range frekuensi 100 Hz â€“ 60 kHz, dengan menggunakan transducer berupa condenser microphone yang diselimuti oleh bahan karet tipis. Prototipe hydrophone tanpa pelindung anti air, dengan pelindung anti air, dan di dalam air dapat menerima (menangkap) gelombang akustik.Kata Kunci: SONAR, hydrophone, transducerÂ ABSTRACTIn finding an object beneath the water there has to be a specific method used sound (accoustic wave) in keeping with it can apread in long distance in the depth of water. The frequency which can be detected by sonar system, counts on the receiver which converts sound to electric signal so that the frequency can be detected and it is called hydrophone. In this research, there is hydrophone prototype which piled up by tranducer and amplifier. Based on the trial, hydrophone prototype can detect accoustic wave in range 100 Hz-60 kHz with the condensor microphone as a transducer covered of thin rubber material. Besides, hydrophone prototype with or without water resistor is still capable to detect acoustic wave.Â Â Keywords: SONAR, hydrophone, transducer

Perancangan Prototipe Transmitter Beacon Black Box Locator Acoustic 37.5 kHz Pingers RUSTAMAJI, RUSTAMAJI; SAWITRI, KANIA; GUNAWAN, RUDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 4, No 2: Published July - December 2016
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v4i2.170

ABSTRAKPingers transmitter berfungsi untuk memancarkan sinyal atau getaran pulsa akustik pada black box. Frekuensi sinyal yang dipancarkan sebesar 37,5 kHz yang dimodulasikan oleh pulsa dengan durasi 10 ms setiap interval 1 second. Modulasi yang digunakan adalah modulasi on off keying. Dalam penelitian ini dibuat perancangan pingers transmitter yang tersusun atas rangkaian osilator, timer, inverter, switch dan rangkaian amplifier. Frekuensi 37,5 kHz tersebut dibangkitkan oleh rangkaian osilator colpitts, sedangkan lebar pulsa dengan durasi 10 ms dan pengulangan pulsa setiap interval 1 second dibangkitkan oleh rangkaian timer. Berdasarkan perancangan yang telah dibuat, output sinyal yang dihasilkan oleh prototipe pingers transmitter tersebut sebesar 37,69 kHz dengan lebar pulsa 9,8 ms setiap interval 1 second.Kata kunci: Black box, pingers transmitter, on off keying.Â ABSTRACTPingers transmitter is used to emits a signal or pulse of acoustic vibrationsÂ in black box. The frequency of the transmitted signal is 37.5 kHz which is modulated by pulses with a duration of 10 ms every interval 1 second. The modulation that used this research is on off keying modulation. In this research, made the design of pingers transmitter which arrange of the oscillator circuit,timer, inverter, switch, and amplifier circuit. The 37.5 kHz frequency is generated by the colpitts oscillator circuit, while the pulse width with a duration of 10 ms,and each pulse repetition interval of 1 second generated by timer circuit. Based on the design that have made, signal output from the pingers transmitter prototype is 37.69 kHz, with the pulse width 9.8 ms every 1 second interval.Keywords: Black box, pingers transmitter, on off keying.

Static Magnetic Field Meter Using Rotating Search Coil Method Rustamaji, Rustamaji; Sawitri, Kania
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.6678

Abstract Static magnetic fields always exist the environment around us; besides being useful there are also negative impacts on humans, therefore it is necessary to have a tool to measure static magnetic fields. The purpose of this research is to produce a static magnetic field meter that can measure weak magnetic field. In this research, the design and realization of a static magnetic field meter using rotating search coil method is carried out, including: search coil, instrumentation and calibration amplifier, and display. Based on the results of measurements and tests that have been carried out, a static magnetic field meter with a coil area A = m2 and the number of turns N = 14 at a certain angular frequency (ω), can detect and measure a fairly small static magnetic field density (B) from various sources, for stable conditions: in the laboratory without any source of magnetic field can detect B = 2.127 to 2.375 mT, and with magnetic source (circular can detect B = 7.422 to 8.194 mT, neodymium can detect B = 11.03 to 11.84 mT, and smartphone X can detect B = 10.37 to 11.78 mT). Overall the device can work to detect and measure weak static magnetic fields with good measurement stability as seen from the relationship curve between supply voltage and the DC motor rotation which is linear, and measurement sensitivity up to B = 2.127 mT.

RADIO KOMUNITAS SEBAGAI TEKNOLOGI TEPAT GUNA UNTUK KOMUNIKASI MASYARAKAT Rustamaji, Rustamaji; Sawitri, Kania
Jurnal Borneo Saintek Vol 6, No 1 (2023): Jurnal Borneo Saintek
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/borneo_saintek.v6i1.4197

At this time there are various types of equipment for electronic communication or often called telecommunications equipment that can be used by the public. Difficulties for students who do not have or master the use of the latest telecommunications equipment, and live in areas that are not covered by telecommunications networks. Of course there must be an appropriate alternative technology that can be used. Where one of them uses broadcast technology through "community radio". Community radio is a radio broadcasting station that is owned, managed, earmarked, initiated, and established by a community. Community radio to disseminate or broadcast information in the form of sound (audio) such as talk, news, or music, through radio waves at a certain frequency. Community radio is useful for distance learning activities, both in situations where there is a pandemic that limits face-to-face activities, or situations without a pandemic, such as overcoming technological limitations in areas that are not covered by cable or cellular telecommunications networks for internet applications.

Training on Arduino Uno-based Smart Home Installation at SMK Al Falah Dago Anwari, Sabat; Sawitri, Kania; Rustamaji, Rustamaji; Lidyawati, Lita; Siswanto, Wahyu Dwi; Ramdhani, Teguh; Latif, Mochamad Fazri Abdul
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 6, No 2 (2025): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v6i2.186-195

Understanding smart home technology is increasingly important as automation and IoT become integral parts of modern living and industry. Arduino is a microcontroller that is widely used in practical technology applications, including smart home technology. Smart home systems are computer-based systems that provide comfort, safety, security, and energy savings automatically. They can be programmed via a computer connected to the internet and can manage electrical equipment that can be controlled, monitored, or accessed remotely. To connect Arduino to the internet, the ESP8266 is used. The ESP8266 is a low-cost Wi-Fi microchip with built-in TCP/IP networking software and microcontroller capability. The Arduino system for education and learning at SMK Al Falah Dago is based on an ESP8266 microcontroller embedded in the Arduino Uno Smart Home Installation for connecting to cellphones, relays, lights, and fans as controlled electronic devices. SMK AL Falah Dago is a vocational high school that offers a program in electrical engineering scope, so this training is crucial to equip students with the necessary expertise to design, install, and maintain smart home systems, preparing them to meet the demands of the evolving technological landscape.

Actuators, IoT and IP Address as Training in Actuators, IoT and IP Address for Senior High School Teachers and StudentsBasic Industrial Instrumentation Waluyo, Waluyo; Widura, Andre; Aryanta, Dwi; Darlis, Arsyad Ramadhan; Subarna, Nana; Rustamaji, Rustamaji; Sawitri, Kania; Fauziah, Dini; Syahrial, Syahrial; Syafitri, Niken; Hadiatna, Febrian
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 1, No 1 (2020): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v1i1.10-24

The third mission of a university is a community service. Based on this mission, this paper presents the activity of community service. The activity was training for senior high school students and teachers. The subjects of the training are actuators, IoT, and IP address. These components or subsystems are very important basic industrial instrumentation for further automation. These subsystems are very correlated with each other. Some actuators are electric, hydraulic, and pneumatic types. There are many applications of IoT and IP addresses, such as smart grids and communications.

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