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All Journal BERKALA FISIKA YOUNGSTER PHYSICS JOURNAL Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Ilmiah Arena Tekstil Bulletin of Chemical Reaction Engineering & Catalysis
Sumariyah Sumariyah
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Chemical Engineering, Chemistry & Bioengineering Chemistry Industrial & Manufacturing Engineering Physics

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RANCANG BANGUN SISTEM KENDALI SUHU DAN KELEMBABAN DARI MINI GARDEN BUNGA KRISAN MENGGUNAKAN SMARTPHONE BERBASIS MIKROKONTROLER Dananjaya, Bachtiar Putra; Sumariyah, Sumariyah
BERKALA FISIKA Vol 24, No 1 (2021): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The  temperature  and  humidity  control  system  of  the  Krisan  Flower  Mini  Garden  has  been designed and implemented. The main components of this control systems were the NodeMCU 8266 microcontroller and smartphones that communicate using the internet of things (IoT). The system support components include the DHT 11 sensor module as a temperature and humidity sensor,  real time clock (RTC) module, liquid crystal display  (LCD) as a result viewer, relay board  module  and  pump.  The  microcontroller  read  and  processed  the  temperature  and humidity sensor output data in the form of a digital voltage signal. The measurement data were displayed on the LCD with an LED indicator and sent to the Telegram application. If the sensor output did not meet the needs of the Chrysanthemum flower, the microcontroller turned on the actuator to turn on the water pump and lights as irradiation. The system test was carried out in the Chrysanthemum Mini Garden by comparing the LCD reading with standard tools. The test results show a difference in temperature of about 0.2-3 oC and humidity of about 1-7%.
RANCANG BANGUN SISTEM KENDALI HUMIDIFIER JARAK JAUH BERBASIS MIKROKONTROLER DENGAN IoT (INTERNET OF THINGS) Zakiyyah, A.Z.; Sumariyah, Sumariyah; Suseno, Jatmiko Endro
BERKALA FISIKA Vol 24, No 4 (2021): Berkala Fisika
Publisher : BERKALA FISIKA

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Room conditions that are too dry or too humid are not good for human health, so we need a humidifier that can maintain humidity in the room. There has been no research on humidifiers that apply DHT22 and HC-SR04 sensors and smartphone as device controls. This reasearch is to design of a humidifier that can be controlled from a smartphone with the addition of these two sensors. In this study, the DHT22 sensor was used as a temperature and humidity detector, with a measurement error of 1.5% for temperature and 1.12% for humidity. The HC-SR04 sensor is used to detect the water capacity in the humidifier with a measurement error of 0.48%. The system is made using NodeMCU ESP8266 which can send sensor readings directly to WiFi. The sensor reading results are sent via the internet to the server and then displayed on the Blynk application on the smartphone. In the Blynk application, the desired humidity set point value can be adjusted, and the state of temperature, humidity, and water capacity in the humidifier can be monitored. This Blynk app can display a notification when the water inside humidifier is running low. The system can also display notifications based on set point and detected relative humidity value. If the detected humidity is lower than set point, a notification will appear and humidifier will be automatically turned on. Otherwise if the humidity is higher than set point, a notification will appear and humidifier will be automatically turned off.
RANCANG BANGUN PROTOTIPE SISTEM KONTROL PARKIR MENGGUNAKAN SENSOR FINGERPRINT BERBASIS ARDUINO UNO Sari, W.T.; Sumariyah, Sumariyah; Suseno, Jatmiko Endro
BERKALA FISIKA Vol 24, No 3 (2021): Berkala Fisika
Publisher : BERKALA FISIKA

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Sebagian  besar  tempat  parkir  menggunakan  cara  manual  sehingga  masih  banyak  memiliki kekurangan, salah satunya yaitu tingginya tingkat pencurian kendaran bermotor. Pada penelitian ini akan dibangun dan diimplementasikan sistem kontrol parkir menggunakan sensor fingerprint berbasis Arduino Uno. Pada penelitian ini, sistem parkir khusus yang sesuai dengan database sidik jari  yang  telah  terverifikasi  oleh  sensor  fngerprint  dan  tersimpan  pada  komputer,  selanjutnya ketika  user  akan  parkir,  user  hanya  menempelkan  sidik  jari  dan  mengunggu  sidik  jari teridentifikasi  dengan  database  sidik  jari  melalui  I2C  Arduino  Uno  ke  komputer.  Ketika  sudah teridentifikasi,  palang  pintu  parkir  akan  terbuka  dan  data  user  parkir  akan  disimpan  dalam database  parkir.  Namun,  apabila  sidik  jari  user  tidak  dapat  teridentifikasi,  maka  palang  pintu parkir tidak akan terbuka sehingga user tidak dapat parkir pada area tersebut. Pengujian sensor fingerprint dengan cara permukaan jari ditekan dan tanpa ditekan, dan didapatkan nilai rata-rata respon time dengan permukaan jari ditekan sebesar 1,37 s dengan tiga kali pengulangan dan nilai rata-rata respon time dengan permukaan jari tanpa ditekan  sebesar 2,16 s serta rata-rata nilai error yaitu 2,7%. Dengan rancang bangun ini, diharapkan dapat terbentuk sistem parkir khusus dengan menggunakan sistem kontrol. Sistem kontrol parkir ini perlu dan cocok diterapkan untuk parkir  karyawan  di  perkantoran,  rumah  sakit,  sekolah,  dan  perguruan  tinggi  karena  memiliki sistem keamanan yang lebih baik.
PEMBANGKITAN LUCUTAN PIJAR KORONA NEGATIF PADA KONDISI ATMOSFER DAN PENGARUHNYA TERHADAP RESAPAN AIR PADA KAIN KATUN DAN POLIESTER GREY Zaenul Muhlisin; Dhyan Prastiwi; Herli Darliawati; Achmad Sjaifudin Tayibnapis; Fajar Arianto; Asep Yoyo Wardaya; Sumariyah Sumariyah; Muhammad Nur
Arena Tekstil Vol 32, No 2 (2017)
Publisher : Balai Besar Tekstil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.885 KB) | DOI: 10.31266/at.v32i2.3573

Abstract

Pada penelitian ini akan diungkapkan tentang lucutan korona negatif pada kondisi atmosfer dan bagaimana pengaruhnya terhadap sifat resapan air di kain poliester grey. Tujuan dari penelitian ini adalah membandingkan pembangkitan lucutan pijar korona negatif dengan dua jenis elektroda yang berbeda geometri dan mengamati sifat serapan air pada kain poliester grey yang telah diiradiasi dengan lucutan ini. Pembangkitan lucutan korona negatif pada kondisi atmosfer ini dilakukan dengan menggunakan dua jenis geometri elektroda, yaitu elektroda titik-bidang dan elektroda garis-bidang. Elektroda titik maupun garis diperlakukan sebagai katoda dan elektroda bidang diperlakukan sebagai elektroda anoda. Pengukuran beda potensial dan arus menggunakan multimeter digital. Iradiasi kain dilakukan dengan menempatkan kain katun maupun poliester pada elektroda bidang. Uji tetes dilakukan untuk mendapatkan karakter serapan air terhadap kain yang telah diiradiasi. Lucutan yang dibangkitkan pada kondisi atmosfer akan meningkat arusnya ketika diberi penambahan tegangan. Karakteristik lucutan saat kain berada anoda sedikit berbeda bila dibandingkan tanpa adanya kain, namun pola lucutan masih relatif sama. Pada uji tetes menunjukkan bahwa lucutan korona negatif pada kain poliester maupun katun berpengaruh pada penurunan waktu serap. Selain itu, durasi iradiasi terhadap kain sangat berpengaruh terhadap penurunan waktu serap air di kain katun maupun poliester. Penurunan mencolok terlihat pada kain poliester grey dimana sebelumnya 16 detik menjadi kurang dari 2 detik.
Karakterisasi sistem pembangkit aliran elektrohidrodinamika lucutan korona positif berkonfigurasi elektroda kawat-bidang Sumariyah Sumariyah; Azzuma Hasna Azzulkha; Muhammad Nur; Zaenul Muhlisin
Youngster Physics Journal Vol 6, No 2 (2017): Youngster Physics Journal April 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The characterization of electrohidrodynamic flow generation system (EHD) has been performed utilizing positive corona discharge configured wire-plate electrode. In this study, the characteristics of the EHD flow generation system in the form of current characteristics as a function of voltage or I-V characteristics with fixed geometry factor, in the without of lubricating oil and with the lubricating oil. The fixed geometry factor was obtained from the radius of the fixed point (r) electrode with various the electrode distance (d). This research was conducted by using positive corona incandescent discharges with wire field electrode configuration. The wire electrode used is made of stainless steel having a length of 5 cm, with wire diameter 0.11 mm, 0.14 mm, 0.21 mm, 0.36 mm, and 0.38 mm. Electrode of field used in the form of circle with diameter 20 cm. Data collection system with variation of voltage, variation of electrode distance, and variation of wire electrode diameter used. Furthermore, data analysis of measurement results was carried out. From the result of characteristic research of EHD flow generator system in the form of current as a function of voltage shows that the increase of voltage is proportional to current increase. While the current as a function of geometry shows the value of the current flowing inversely proportional to the geometry factor of the electrode distance change.Keywords:electrohydrodinamic, ion wind, positive corona discharge 
Penentuan sudut arah angin ion pada lucutan korona positif berkonfigurasi elektroda titik-bidang Sumariyah Sumariyah; Maryam Restiwijaya; Muhammad Nur
Youngster Physics Journal Vol 6, No 4 (2017): Youngster Physics Journal Oktober 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Determination of the ion wind angle of positive corona discharge with point to plane electrode geometry configuration has been done. Point electrode was made from stainless steel with various radiuses of 0.26 mm, 0.28 mm, 0.35 mm, and 0.47 mm. The plane electrode with circle form was made from stainless steel with diameter of 20 cm. Determination of the ion wind angle was carried out by measuring the current, the radius of deformation of lubricating oil at various voltage, electrode spacing, and the radius of the point electrode. The results showed that the angle of the ion wind direction is affected by a given voltage, the distance between electrodes, and the radius of the point electrode. Value of the ion wind flow direction angle is inversely proportional to the distance between the electrode and the radius of the point electrode. When the voltage is increased, the angle of ion wind direction will be larger but would reach saturation at the region of corona discharge which is close to the arc discharge.Keywords: Ion wind, positive corona discharges, point to plane electrode.
Evaluation of Novel Integrated Dielectric Barrier Discharge Plasma as Ozone Generator Muhammad Nur; Ade Ika Susan; Zaenul Muhlisin; Fajar Arianto; Andi Wibowo Kinandana; Iis Nurhasanah; Sumariyah Sumariyah; Pratama Jujur Wibawa; Gunawan Gunawan; Anwar Usman
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 1 Year 2017 (April 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (692.696 KB) | DOI: 10.9767/bcrec.12.1.605.24-31

Abstract

This paper presents a characterization of an integrated ozone generator constructed by seven of reactors of Dielectric Barrier Discharge Plasma (DBDP). DBDP a has spiral-cylindrical configuration. Silence plasma produced ozone inside the DBDP reactor was generated by AC-HV with voltage up to 25 kV and maximum frequency of 23 kHz. As a source of ozone, dry air was pumped into the generator and controlled by valves system and a flowmeter. We found ozone concentration increased with the applied voltage, but in contrary, the concentration decreased with the flow rate of dry air. It was also found that a maximum concentration was 20 mg/L and ozone capacity of 48 g/h with an input power of 1.4 kW. Moreover, in this generator, IP efficiency of 8.13 g/kWh was obtained at input power 0.45 kW and air flow rate of 9 L/min. Therefore, be the higher ozone capacity can be produced with higher input power; however, it provided lower IP efficiency. The effect of dry air flow rate and applied voltage on ozone concentrations have been studied. At last, spiral wire copper was very corrosive done to the interaction with ozone, and it is necessary to do a research for finding the best metals as an active electrode inside of the quartz dielectric. 
Evaluation of Novel Integrated Dielectric Barrier Discharge Plasma as Ozone Generator Muhammad Nur; Ade Ika Susan; Zaenul Muhlisin; Fajar Arianto; Andi Wibowo Kinandana; Iis Nurhasanah; Sumariyah Sumariyah; Pratama Jujur Wibawa; Gunawan Gunawan; Anwar Usman
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 1 Year 2017 (April 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.1.605.24-31

Abstract

This paper presents a characterization of an integrated ozone generator constructed by seven of reactors of Dielectric Barrier Discharge Plasma (DBDP). DBDP a has spiral-cylindrical configuration. Silence plasma produced ozone inside the DBDP reactor was generated by AC-HV with voltage up to 25 kV and maximum frequency of 23 kHz. As a source of ozone, dry air was pumped into the generator and controlled by valves system and a flowmeter. We found ozone concentration increased with the applied voltage, but in contrary, the concentration decreased with the flow rate of dry air. It was also found that a maximum concentration was 20 mg/L and ozone capacity of 48 g/h with an input power of 1.4 kW. Moreover, in this generator, IP efficiency of 8.13 g/kWh was obtained at input power 0.45 kW and air flow rate of 9 L/min. Therefore, be the higher ozone capacity can be produced with higher input power; however, it provided lower IP efficiency. The effect of dry air flow rate and applied voltage on ozone concentrations have been studied. At last, spiral wire copper was very corrosive done to the interaction with ozone, and it is necessary to do a research for finding the best metals as an active electrode inside of the quartz dielectric. 
Co-Authors Achmad Sjaifudin Tayibnapis Ade Ika Susan Agus Sudarmanto Ahmad Suseno Andi Wibowo Kinandana Andi Wibowo Kinandana Anjar Widiyatmoko Anwar Usman Arif Ismul Hadi Aris Supriati Asep Yoyo Wardaya Aziz, Fariz Abdul Azzuma Hasna Azzulkha Binu Soesanto, Qidir Maulana Bukit Yuta Wirawan Cecep Kusmana Choirul Anam AM Diponegoro Dananjaya, Bachtiar Putra Darliawati, Herli Dhyan Prastiwi Dyah Hari Setyaningrum Evi Setiawati Fajar Arianto Fajar Arianto Fitria L Gunawan Gunawan Herli Darliawati Ibnu Arimono Iis Nurhasanah Isnain Gunadi Jatmiko Endro Suseno Jumadi Priyono K. Sofjan Firdausi M. Dahlan Maryam Restiwijaya Moh. Yusron Mohammad Munir Mohtar Mohtar Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur N. Ayu Ketut Umiati Noviyani, Siti Nugroho, Hafidz Nur, Muhammad Pandji Triadyaksa Prastiwi, Dhyan Pratama Jujur Wibawa Sari, W.T. Sartinah Sartinah Setyawati, Rohmah Cahya Eka Sri Muryani, Sri Suryono Suryono Syaiful Mujib Tanza, Nendya Ertika Tayibnapis, Achmad Sjaifudin Wahyu Adi Wijaya Yusup Hidayat Zaenal Arifin Zaenul Muhlisin Zaenul Muhlisin Zakiyyah, A.Z.