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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Jurnal Natur Indonesia Teknika TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics JURNAL FISIKA SEMIRATA 2015 Prosiding Semnastek JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JOIV : International Journal on Informatics Visualization Spektra: Jurnal Fisika dan Aplikasinya Jurnal Teori dan Aplikasi Fisika Indonesian Journal of Electrical Engineering and Computer Science Journal of Energy, Material, and Instrumentation Technology Makara Journal of Technology NEAR: Jurnal Pengabdian kepada Masyarakat
Warsito .
Universitas Lampung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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PERHITUNGAN DEBIT ALIRAN PADA SISTEM ALIRAN TERBUKA MELALUI PENGUKURAN TINGGI MUKA AIR MENGGUNAKAN TRANSDUSER ULTRASONIK Gurum A P, Gurum A P; Kalpataru I, Kalpataru I; Warsito, Warsito
SEMIRATA 2015 Prosiding Bidang Fisika
Publisher : SEMIRATA 2015

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (619.782 KB)

Abstract

Kemampuan pengukuran debit aliran sangat diperlukan untuk mengetahui potensi sumberdaya air di suatu wilayah aliran sungai, mengevaluasi ketersediaan air, dan simulasi pada sistem peringatan dini banjir.  Perhitungan besarnya debit air yang mengalir pada saluran sistem open channel lebih komplek dibandingkan saluran tertutup (close channel). Hal ini disebabkan berbagai factor seperti bahan pembentuk saluran, derajat ketidakteraturan, variasi penampang, besarnya pengaruh penghambat, dan derajat kelokan yang harus diperhitungkan, dan disebut sebagai koefisien manning. Besarnya debit aliran pada sistem open channel akan berdampak langsung pada perubahan level permukaan aliran. Persamaan Chezy akan memudahkan untuk pengukuran debit aliran secara real time melalui pengukuran tinggi permukaan aliran. Pada penelitian ini telah dikembangkan alat yang mampu mengukur level muka aliran sekaligus besarnya debit aliran sungai menggunakan sinyal ultrasonik dengan memperhitungkankoefisien manning. Alat yang dibuat memiliki kesalahan pengukuran tinggi muka air sebesar 1,16 % dan kesalahan perhitungan debit sebesar 2,42%. Kata kunci : Open channel, keofisien manning, debit aliran
Desain dan Analisis Pengukuran Viskositas dengan Metode Bola Jatuh Berbasis Sensor Optocoupler dan Sistem Akuisisinya pada Komputer Warsito, Warsito; Suciyati, Sri Wahyu; Isworo, Dyan
Jurnal Natur Indonesia Vol 14, No 3 (2012)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.777 KB) | DOI: 10.31258/jnat.14.3.230-235

Abstract

It has been designed and analyzed the low cost viscometer using falling ball method, the sample analyzed is glycerin fluid at 20oC. Two optocoupler circuits have been used as time measurement system of falling ball between two references point, light source used was infrared laser diode. The computer acquisition system use serial communication and it has been perfectly made and characterized. The velocity measurement system has 0.75 x 10-1 s resolution, but the resolution of integrated system both of hardware and acquisition software, is about 10-1 s. The theoretical viscosity value has been calculated and simulated to abtain the absolute viscosity value. This simulation results have been analyzed and compared with the experiment results. The correction factor for velocity calculation has been discussed and gave the optimum value of velocity correction factor (0.4425), regarding to the dimension of tube and ball used in this research. Based on the experiment, the viscosity of glycerin obtained was 1418.0309±1.6157 mPa.s., this value was with similar with the literatures and has a 0.57% of accuracy error (ε0).
Calibration of Geomagnetic and Soil Temperatur Sensor for Earthquake Early Warning System Dodi Yudo Setyawan; Dona Yuliawati; Warsito Warsito; Warsono Warsono
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 5: October 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i5.7592

Abstract

The study of Design of Earthquake Early Warning System for Real Time Using Geomagnetism and Total Electron Content with Fuzzy Logic through competitive grants scheme has obtained the prototype of the earthquake early warning system. However, it still needs improvements on in the calibration of thesensor system especially for MAG3110 sensor and DHT11 sensor. This calibration was done by adjusting the sensor system to the existing measuring devices standards in the Physics Department laboratory of the Sains Faculty Lampung University, to obtain measurement accuracyand to get a good result about where and when the earthquake would occurand how strong the earthquake would be. The calibration of MAG3110 sensor and DHT11 sensor obtained the standard correction results, the standard deviation of MAG3110 from 3 axes, namely x axis was 8.5, y axis was 2.66, and z axis was 1.9, whereas the standard deviation for DH11 sensor was 0.1161.
Web Monitoring CO, CO2 dan Suhu secara Real Time Ahmad Zainuri; Gurum Ahmad Pauzi; Junaidi; Warsito
Journal of Energy, Material, and Instrumentation Technology Vol 1 No 1 (2020): Journal Of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.661 KB) | DOI: 10.23960/jemit.v1i1.4

Abstract

This research is related to making a web to display data on CO, CO2 and temperature monitoring results in real time. The measuring instrument used consisted of an MQ-7 sensor to detect CO gas, a MQ-135 sensor to detect CO2 gas, a DHT-22 sensor to measure the temperature and a microcontroller as a control system. CO, CO2 and temperature measurements were carried out at the University of Lampung with 10 different points. Measurements were made for three days in the morning, afternoon and evening with the duration of measurement of each location 5 minutes. Measurement data is displayed on the PC server using an interface created through the Visual Basic 2010 program and saved to the Mysql database. Data from the database is sent to the web server. Based on the results of tests conducted, the web monitoring system is running well. The web can display CO, CO2 and temperature measurement data in the form of graphs and tables in real time. The web can be accessed by web browser at devices that are connected to the internet.
Monitoring Data Perubahan Suhu, CO dan CO2 Secara Real Time Menggunakan MySQL Randi Setiawan; Warsito Warsito; Junaidi Junaidi; Sri Wahyu Suciyati
Journal of Energy, Material, and Instrumentation Technology Vol 1 No 2 (2020): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.861 KB) | DOI: 10.23960/jemit.v1i2.25

Abstract

This research is related to making a system to display data on temperature changes, CO, and CO2 monitoring results in real time make use of MySQL. The measuring instrument used consisted of an MQ-7 sensor to detect CO gas, a MQ-135 sensor to detect CO2 gas, a DHT-22 sensor to measure the temperature and a microcontroller as a control system. Measurement data is displayed on the PC server using an interface created through the Visual Basic 2010 program and saved to the Mysql database. In this research, a baudrate of 19200 bps was used so that data transmission could be faster so that it supported realtime data transmission. Based on the research, it was found that the greater the boudrate value used, the faster time it takes to send data. In this study, a baudrate of 19200 bps was used so that data transmission could be faster so that it supported realtime data transmission. Based on the research, it was found that the greater the boltrate value used, the faster time it takes to send data. Based on the results of tests conducted, MySQL monitoring system is running well. The MySQL can display data on temperature changes, CO, and CO2 measurement data in the form of tables in real time.
KARAKTERISASI KELISTRIKAN AIR PAYAU DAN AIR SUNGAI SEBAGAI BAHAN ELEKTROLIT SW Suciyati; Warsito Warsito; Amir S; Arif S; Giri AM; Gurum AP
Spektra: Jurnal Fisika dan Aplikasinya Vol 3 No 1 (2018): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 3 Issue 1, April 2018
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (316.589 KB) | DOI: 10.21009/SPEKTRA.031.07

Abstract

Abstrak Air payau dan air sungai memiliki potensi sebagai sumber energi alternatif terbaharui. Studi kelistrikan mereka berhasil dilakukan menggunakan prinsip elektrokimia sel volta, yaitu dengan membuat pasangan elektroda disusun secara seri dalam 20 kotak persegi panjang. Elektroda yang dipakai adalah tembaga (Cu), dan seng (Zn), sedangkan sebagai elektrolit adalah larutan air payau dan air sungai. Karakteristik bahan elektrolit diketahui melalui pengukuran tegangan dan arus yang mengalir pada LED (1,2 watt) yang diletakkan pada rangkaian sel elektroda. Pengambilan data pengukuran dilakukan selama 3 hari dengan selang 2 jam. Hasil pengukuran dan analisis untuk kombinasi elektroda Cu-Zn, menunjukkan air payau memiliki daya kelistrikan lebih besar daripada air sungai, dengan rasio 12,008 : 5,84 (hari pertama) dan 1,752 : 0,572 (hari ketiga). Nilai ini juga menunjukkan bahwa air payau sebagai larutan elektrolit mampu menghasilkan energi untuk menghidupkan LED selama 72 jam dengan nilai rata-rata intensitas LED yaitu 322,8 lux. Kata-kata kunci: elektrolit, air payau, sel elektroda, intensitas LED Abstract Brackish water and river water have the potential as an alternative renewable energy source. Their electrical studies have been successfully conducted using the electrochemical principle of voltaic cells, by making electrode pairs arranged in series in 20 rectangular squares. Electrodes used are copper (Cu), and zinc (Zn), while as an electrolyte is some brackish water and river water. The characteristic of the electrolyte material is known by measuring the voltage and current flowing on the LED (1.2 watt) placed on the electrode cell circuit. Taking measurement data is done for three days with 2 hour interval. The results of measurement and analysis for Cu-Zn electrode combinations have shown that brackish water has greater electrical power than river water, with a ratio of 12.008: 5.84 (day one) and 1.752: 0.572 (third day). This value also shows that brackish water as electrolyte solution has been able to produce energy to turn on the LED for 72 hours with an average value of LED intensity of 322.8 lux. Keywords: electrolyte, brackish water, electrode cell, LED intensity
Desain dan Realisasi Akumulator Elektrolit Air Laut dengan Penambahan Sodium Bicarbonate (NaHCO3) sebagai Sumber Energi Alternatif Gurum Ahmad Pauzi; Randha Kentama Aewaditha; Amir Supriyanto; Sri Wahyu Suciyati; Arif Surtono; Junaidi Junaidi; Warsito Warsito
Jurnal Fisika Vol 8, No 2 (2018)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v8i2.16982

Abstract

Penelitian tentang karakteristik elektrik sel elektrokimia dengan elektrolit air laut dengan penambahan NaHCO3 menggunakan elektroda Cu-Zn telah dilakukan. Sistem elektrokimia ini dirancang agar dapat dilakukan penggantian elektrolit air laut tanpa membuat elektroda yang digunakan terpapar udara secara langsung. Pengukuran karakteristik elektrik  meliputi tegangan, arus, dan  daya, serta luminasi yang dihasilkan beban LED 1,2 watt. Penelitian ini melakukan perbandingan karakteristik elektrik sel elektrokimia dengan dan dengan tanpa penambahan NaHCO3. Pengukuran dilakukan selama 5 hari (120 jam) dengan penggantian elektrolit setiap 24 jam. Hasil penelitian menunjukkan bahwa sistem elektrokimia  dengan penambahan NaHCO3 mampu menyalakan LED lebih lama (5 hari) dibandingkan dengan tanpa penambahan NaHCO3 yang hanya mampu menyalakan LED selama 3 hari. Laju korosi pada elektroda Cu-Zn tanpa penambahan NaHCO3 semakin lama digunakan semakin besar, sedangkan dengan penambahan NaHCO3 tidak terjadi korosi.
Study of 2D and 3D Optical Beam Induced Voltage Imaging Using Photoresistor Sensor Warsito, Warsito; Suciyati, Sri Wahyu; Harnani, Susi; Dzakwan, Akhmad
Makara Journal of Technology Vol. 9, No. 1
Publisher : UI Scholars Hub

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

Abstract

Study of 2D and 3D Optical Beam Induced Voltage Imaging Using Photoresistor Sensor. This article shows a method to study OBIV (optical beam induced voltage) imagerie system, that usually employ a laser scanning microscopy system. The OBIV imagerie system developed use a photoresistor sensor as a sample and simultaneously it can be used for analyzing its inhomogeneity response. Resolution of the system is still low, about 350μm due to high value of incident light diameter. The results inform that photoresistor sensors gave an optimum response if the incident light hits the center of sensible zone.
Pelatihan Penulisan Karya Ilmiah Bagi Guru Sekolah Menengah Pertama (SMP) Kota Metro Amir Supriyanto; Sri Wahyu Suciyati; Gurum Akhmad Pauzi; Arif Surtono; Warsito Warsito; Junaidi Junaidi
NEAR: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 1 (2022): NEAR
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/nr.v1i2.480

Abstract

Penelitian dan publikasi ilmiah guru merupakan bagian dari penilaian kompetensi guru. Sehingga pembinaan dan bimbingan terhadap guru untuk dapat melakukan penelitian dan pubikasi ilmiah sangat diperlukan. Karena secara umum semua guru memiliki kemampuan untuk melakukan penelitian dan publikasi ilmiah. Tujuan kegiatan adalah memberikan pengetahuan kepada guru dalam melakukan penelitian, baik penelitian tindakan kelas (PTK) maupun penelitian konten bidang ilmu dilanjutkan dengan publikasi ilmiah hasil penelitiannya. Metode pelaksanaan kegiatan meliputi: tes awal, pemaparan materi (ceramah dilengkapi dengan praktek yang diikuti peserta), dan tes akhir. Pelaksanaan kegiatan dilakukan selama satu hari, bertempat di SMPN 1 Metro. Kegiatan diikuti oleh oleh 28 orang, terdiri atas guru SMP negeri dan swasta Kota Metro. Hasil tes awal menggambarkan pengetahuan guru terhadap penelitian dan publikasi ilmiah masih rendah, yaitu nilai terendah 11, tertinggi 30, dan rata-rata 29. Sedangkan hasil tes akhir diperoleh nilai terendah 39, tertinggi 67, dan rata-rata 52. Hasil tes akhir menunjukkan peningkatan pemahaman guru yang ditunjukkan melalui peningkatan nilai tes akhir yaitu nilai terendah meningkat 167%, nilai tertinggi meningkat 71 %, dan rata-rata meningkat 81 %..
Analisis Prosedur Koneksi Ulang Sistem Internet of Things (IoT) Studi Kasus Pada Pertanian Cerdas Dodi Yudo Setyawan; Warsito; Roniyus Marjunus; Sumaryo
TEKNIKA Vol. 17 No. 2 (2023): Teknika Juli - Desember 2023
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10252337

Abstract

Pertanian cerdas yang terintegrasi dengan IoT menjadi kebutuhan yang sangat penting ditengah tingginya jumlah penduduk serta lahan pertanian yang semakin sempit. Sistem IoT memanfaatkan jaringan internet untuk mengontrol dan memonitor lahan pertanian dengan memanfaatkan device wifi NodeMCU dan sensor. Kestabilan koneksi jaringan internet menjadi sangat penting untuk sustainability sistem dalam keadaan on atau online karena proses pertanian seperti irigasi dan pemupukan tergantung pada konektivitas jaringan internet. Analisis prosedur koneksi ulang sistem IoT untuk menjaga sustainability sistem dalam keadaan on atau online dengan cara membandingkan dengan sistem IoT device wifi NodeMCU tanpa prosedur koneksi ulang. Analisis ini menghasilkan sistem IoT device wifi NodeMCU yang mampu melakukan koneksi ulang secara otomatis ketika koneksi jaringan internet terputus. Hasil pengujian menunjukan koneksi ulang dengan baik ketika NodeMCU A terputus dari router pada pukul 11:15 sampai dengan 12:00 dan NodeMCU B tidak dapat terkoneksi ulang dengan router. Kata Kunci: pertanian cerdas, IoT, sustainability, NodeMCU
Co-Authors Abd. Rasyid Syamsuri Abimanyu Yogadita R Admi Syarif Aewaditha, Randha Kentama Afrida Hafizhatul Ulum Agus Hermawan Agus Riyanto Agus Wantoro Ahmad Zainuri Akhmad Dzakwan Alfiansyah, Irfan Ali Akbar Raksa Gandi Amir S Amir Supriyanto Amir Supriyanto Amria Sukma Ringkeh Aprilia Habibah Apriyanto, Donni Kis Aptridio S Yusuf Ari Fiyanti Arif S Arum Masitoh Ayu Sangging, Putu Ristyaning Dainty Ambarina Darti Nopilawati Defi Setiawati Dewi Sartika Rhomadhani Dewi, S. K. Dewi, S. K. Dona Yuliawati Donni Kis Apriyanto Dwi Vaolina Sari Dyan Isworo Fat’hul Bari Febriandi Hasibuan Fitria Yunita Giri AM Giri Amirul Mukminin Gurum A P Gurum A P, Gurum A P Gurum Ahmad P Gurum Ahmad Pauzi Gurum Ahmad Pauzi Gurum Ahmad Pauzi Gurum Akhmad Pauzi Gurum AP Heni Sulistiani Husnul Muttaqin Ilfa Yuni Arta Juli A Prastyo Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Kalpataru I Kalpataru I, Kalpataru I Khairun Nisa Kurnia Muludi Lisnawati Lisnawati M Mardianto Maria Sova Maria Yeni Hermawati Marjunus, Roniyus Markoni Markoni Marsi Marsi Mufli Fita Firna Sari Muhammad Iqbal Yuliansyah Nisa Berawi, Khairun Nopilawati, Darti Novia Puspasari Pauzi, Gurum Ahmad Randha Kentama Aewaditha Randi Setiawan Redy Susanto, Erliyan Renih Hayati Rita Budiati Riza Septiani S Syafriadi Sabaruddin Sabaruddin Sanjaya Nugraha Sari, Dwi Vaolina Setyawan, Dodi Yudo Shintha Yunia Ulfa Siti Wahyuni Sri Ratna Sulistiyanti Sri Suciyati Sri Suciyati, Sri Sri Wahyu Suciyati Sri Wahyu Suciyati Sri Wahyu Suciyati Sri Wahyu Suciyati Sumaryo Sumaryo Gitosaputro Sumaryo Sumaryo Supriyanto, Amir Surtono, Arif Susi Harnani Susi Harnani, Susi SW Suciyati Syafruddin Syam Wahyu Handriyanto Warsono Warsono Widoretno, W. Widoretno, W. Winda Elsa Marelita Yanti Yulianti Yodhi Yuniarthe Yuri Pramono Yuyun Yulianti Yuyun Yulianti Z Zaitun