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All Journal Jurnal Natur Indonesia JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Teori dan Aplikasi Fisika Journal of Multidisciplinary Applied Natural Science Journal of Energy, Material, and Instrumentation Technology Jurnal Abdimas Kartika Wijayakusuma Makara Journal of Technology
Sri Wahyu Suciyati
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Analisis Pemanfaatan Teknik Template Matching pada Sistem Akuisisi dan Pengenalan Karakter Citra Plat Nomor Kendaraan Pauzi, Gurum Ahmad; Suciyati, Sri Wahyu; Sahtoni, Sahtoni
Jurnal Teori dan Aplikasi Fisika Vol 1, No 1 (2013): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v1i1.485

Abstract

Sistem akuisisi dan pengenalan karakter pada plat nomor kendaraan merupakan salah satu aplikasi dalam ilmu komputer yang dapat membantu proses sistem pengolahan data kendaraan. Sistem ini memanfaatkan metode image processing yang diharapkan dapat meningkatkan kinerja dari sistem informasi pada area parkir. Terdapat beberapa tahapan dalam sistem pengenalan karakter ini yaitu pengambilan gambar plat menggunakan kamera (capture), cropping , proses grayscale, threshold, negasi dan scalling. Proses akhir adalah pengenalan pada setiap karakter dengan metode template matching. Dalam penelitian ini, analisa kemampuan sistem dilakukan terhadap empat sampel plat nomor kendaraan dengan empat jenis variabel percobaan yaitu berdasarkan pengambilan gambar plat terhadap jarak plat, sudut kemiringan vertikal plat, sudut ortogonal plat, dan hubungan pixel dengan waktu pengolahan. Dari hasil percobaan diperoleh hasil terbaik pengambilan gambar pada jarak 45 cm menggunakan level threshold 60 pada level range 0­-255, dimana keberhasilan mencapai 97%. Sudut kemiringan vertikal maksimum plat mencapai keberhasilan 75% pada sudut 1o, semakin tinggi sudut kemiringannya maka kemampuan sistem dalam mengenali plat semakin menurun. Sudut ortogonal maksimum dengan keberhasilan 78% pada sudut 10o, semakin tinggi sudut ortogonalnya maka kemampuan sistem dalam mengenali plat semakin menurun. Pengenalan ukuran pixel terbaik mencapai waktu rata-rata 00.05.45 detik, semakin tinggi ukuran pixelnya, maka akan semakin lama proses untuk mengenali karakternya. Kata Kunci: Citra, Pengolahan Citra, Template Matching, Nomor Kendaraan.
Rancang Bangun Sensor Extensometer Elektris sebagai Pendeteksi Pergeseran Permukaan Tanah dan Sistem Akuisisi Data pada Komputer Lisnawati, Lisnawati; Suciyati, Sri Wahyu; Warsito, Warsito
Jurnal Teori dan Aplikasi Fisika Vol 1, No 1 (2013): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v1i1.469

Abstract

Tanah longsor merupakan bencana yang sering terjadi di Indonesia. Bencana ini perlu antisipasi melalui monitoring daerah rawan dengan pengembangan sistem instrumentasi. Sensor extensometer elektris dibuat dengan sistem akuisisi data pada komputer melalui jalur komunikasi serial USB. Extensometer yaitu perangkat elektronik yang berfungsi sebagai sensor untuk mendeteksi pergeseran tanah dalam orde millimeter. Sensor extensometer sebelum digunakan sebagai pendeteksi pergeseran tanah, terlebih dahulu dilakukan pengukuran input output sensor untuk mengetahui karakteristiknya. Pengujian sensor dilakukan dengan menggeser tali per 5 mm. Pergeseran potensiometer menghasilkan perubahan tegangan keluaran ketika rangkaian sensor dihubungkan ke tegangan. Range tegangan keluaran sensor yang diperoleh sebesar 0,016 hingga 4,800 volt. Tegangan ini selanjutnya akan diubah menjadi data digital oleh ADC 8 bit mikrokontroler dan dikirimkan ke komputer untuk diolah dan ditampilkan ke monitor dalam bentuk nilai tegangan dan pergeseran yang terdeteksi oleh sensor. Hasil pengamatan menunjukkan bahwa respon pergeseran terhadap perubahan tegangan adalah linier. Sensor extensometer ini mempunyai sensitivitas tinggi, yaitu 34 mV/mm dan range pergeseran yang dapat dideteksi oleh sensor adalah 0 hingga 140 mm. Kata Kunci: Extensometer, pergeseran tanah, dan sistem akusisi data.
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).
Simulasi Model Dispersi Polutan Gas dan Partikulat Molekul Pada Pabrik Semen Dengan Menggunakan Software Matlab 7.12 Hasibuan, Febriandi; Warsito, W; Suciyati, Sri Wahyu
Jurnal Teori dan Aplikasi Fisika Vol 3, No 2 (2015): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v3i2.1299

Abstract

Telah dilakukan perancangan aplikasi komputer yang bertujuan untukmemvisualkan suatu pola sebaran polutan gas dan partikulat molekul yang berasal dari cerobong asap semen. Lokasi yang dipilih untuk menerapkan pemodelan dispersi polutan ini adalah Pembangkit Listrik Tenaga Uap Tarahan (PLTU), Lampung Selatan dengan data lingkungan (suhu lingkungan, arah angin dan kecepatan angin) yang diperoleh dari hasil pengukuran lapangan. Aplikasi ini berbentuk simulasi dengan disediakan berbagai macam parameter data masukan yaitu kecepatan angin, stabilitas atmosfer, kecepatan semburan emisi, suhu cerobong, suhu lingkungan, tinggi cerobong dan diameter cerobong danhasil simulasi ini ditampilkan dalam bentuk angka-angka, grafik dua dimensi maupun tiga dimensi dan pilihan bentuk grafik.Model matematis yang digunakan untuk memodelkan penyebaran polutan adalah model dispersi Gaussian tipe point sourcedengan asumsi dispersi polutan berasal dari cerobong asap, dispersi berlangsung dalam kondisi steady-state dan tidak ada reaksi kimia yang terjadi di udara. Dari hasil simulasi menunjukkan bahwa semakin kecil nilai perubahan suhu ( ) antara suhu dalam cerobong dengan suhu udara di sekitar cerobong asap, diameter pola sebaran pusat semakin panjang dan plume rise semakin kecil.Kemudian semakin besar kecepatan angin, pola penyebaran polutan semakin menyempit dan nilai konsentrasi polutan pada pusat sebaran semakin bertambah.
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.
Smart Green Box Trash Design Based on HC-SR04 Sensor Arduino Uno Integrated Dika, Mahardika Setiawan; Suciyati, Sri Wahyu; Supriyanto, Amir; Pauzi, Gurum Ahmad
Journal of Energy, Material, and Instrumentation Technology Vol 4 No 3 (2023): 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 | DOI: 10.23960/jemit.v4i1.115

Abstract

This research has realized the design of a smart green trash box based on the HC-SR04 sensor, which is integrated with Arduino Uno. This research aims to design and build a digital instrumentation system based on Arduino Uno, applying Ultrasonic Sensors to the Green Box Trash System. In addition, this system is equipped with an information display via LCD and speakers so that we can find out the contents of the green trash box. Data retrieval by detecting objects with a distance of less than 10 cm to open the trash and measure the volume in the green trash box. The research results are displayed as a prototype Smart Green Trash Box design. Based on the HC-SR04 Sensor Integrated by Arduino Uno. The ultrasonic sensor in the Green Box Trash system works well by measuring the volume and can detect when an object is approaching with a distance of less than 10 cm. Assembling the green box using the HC-SR04 sensor, which is integrated with Arduino Uno functions according to the program created if, in the green box, there is HC-SR04 1 sensor trash, it measure the volume of trash and then display it through the LCD, and if there is an object approaching the HC-SR04 sensor 2, then the servo moves so that the green trash box can be opened. The Green Trash box can display trash volume and time on the 16x2 character LCD in real-time with the program uploaded to Arduino as monitoring.
Design of a Classroom Noise Monitoring Tool Using a KY-037 Sound Sensor Based on Wemos D1R1 Rifqah, Raden Ayu Nurfadhillah; Suciyati, Sri Wahyu; Surtono, Arif; Pauzi, Gurum Ahmad
Journal of Energy, Material, and Instrumentation Technology Vol 4 No 4 (2023): 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 | DOI: 10.23960/jemit.v4i4.118

Abstract

The noise level in the room is one of the factors that can influence teaching and learning activities. Research on classroom noise levels has been done using the Wemos D1 R1-based KY-037 sound sensor. This research aims to determine the noise level in the classroom and be able to monitor the noise level in the room. Data collection was carried out by sound detection in the classrooms of SMA Negeri 13 Palembang from 07.00 – 12.00 WIB for seven days. The research results show that the system is functioning well, indicated by the situation when the noise level is less than 45 dB, and the LED lights up. When the noise level is more than or equal to 45 dB, then the yellow LED, mini DFPlayer, and speaker will light up, and when the noise level is more than or equal to 55 dB, then the red USB LED, mini DFPlayer, and speaker will light up. Data on noise levels and LED conditions received can be monitored via the web server. The system used on the web server is localhost access on a computer that can be monitored within the school environment.
Design and Electrical Characterization of Plant Microbial Fuel Cell (PMFC) Using Eichhornia crassipes by Varying the Electrode Distance and Effect Light of the Sun Suryani, Mei; Pauzi, Gurum Ahmad; Junaidi, Junaidi; Suciyati, Sri Wahyu
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 1 (2024): 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 | DOI: 10.23960/jemit.v5i1.159

Abstract

The Plant Microbial Fuel Cell (PMFC) design using water hyacinth has been successfully created. The PMFC was then treated by varying the distance of the electrode and giving the effect of sunlight. The electrodes used are Cu-Zn pairs where the electrode distance varies, with values of 3, 6, 9, and 12 cm. Furthermore, the data was taken with PMFC conditions placed outside and indoors for 14 days (331 hours). The results showed that PMFC with an electrode distance of 3 cm produced a more excellent value of electrical power than the other electrode distances, which was 0.6786 mW on the second day at the 37th hour or in the afternoon at 13.00 WIB. In general, the electrical characteristics produced by PMFCs, which are affected by sunlight, produce greater electrical power than PMFCs indoors.
The Effect of H2SO4 Variations on the Synthesis and Characterization of Nanocellulose Using Pineapple Peel Fiber Sitohang, Rosanti; Manurung, Posman; Suciyati, Sri Wahyu; Karo, Pulung Karo
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 2 (2024): 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 | DOI: 10.23960/jemit.v5i2.168

Abstract

Manufacturing nanocellulose made from pineapple peel fiber has been carried out using acid hydrolysis. This study aims to determine the effect of variations in H2SO4 on the synthesis of nanocellulose in pineapple peel fibers and on the crystal structure, surface morphology, and constituent elements of pineapple skin fiber nanocellulose. The variations of H2SO4 used were 5, 10, 15 and 20%. X-ray diffraction (XRD) and Scanning Electron microscopy (SEM) are characterizations used. The results of XRD characterization showed that the size of the resulting crystallite had met the appropriate size in the range of values from 2.03 – 2.21 nm. The results of SEM characterization show that the image is not porous and lumpy.
Effect of Variation H2SO4 on the Manufacture of Nanocellulose from Corn Cobs Pertiwi, Mega; Manurung, Posman; Suciyati, Sri Wahyu; Karo, Pulung Karo
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 3 (2024): 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 | DOI: 10.23960/jemit.v5i3.173

Abstract

The acid hydrolysis method has been used to manufacture nanocellulose from corn cobs. This study aims to determine the effect of variations in the concentration of H2SO4 on the characteristics of nanocellulose produced from corn cobs and their surface morphology. The variations of H2SO4 used were 5, 10, 15, and 20%. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) are characterizations used. The results of XRD characterization showed that the crystallite size obtained followed the nanocellulose crystallite size, which was 1.79-2.59 nm. The SEM characterization showed that the resulting nanocellulose's surface morphology was lumpy and non-porous.
Co-Authors Abd. Rasyid Syamsuri Abidin, Ramadhani Aewaditha, Randha Kentama Ahmad Saudi Samosir Akhmad Dzakwan, Akhmad Anggraini, Anisyah Aprilia, Ayu Apriyanto, Donni Kis Dika, Mahardika Setiawan Dwi Asmi Dyan Isworo Gultom, Rysa Sonya Reni Paulin Gurum A P Gurum A P, Gurum A P Hasibuan, Febriandi Humairoh Ratu Ayu Junaidi Junaidi Karo Karo, Pulung Karo, Pulung Karo Mega Pertiwi, Mega Muhammad Syarif Hidayatullah, Muhammad Syarif Nurcahayaniati, Hikmah Pauzi, Gurum Ahmad Posman Manurung Pubiyanti, Intan Putra, Dio Aditia Putri, Faradilla Nabila Rifqah, Raden Ayu Nurfadhillah Sahtoni Sahtoni, Sahtoni Shabrina, Shabrina Yakosati Sitohang, Rosanti Sri Ratna Sulistiyanti Supriyanto, Amir Supriyanto, Amir Surtono, Arif Suryani, Mei Susi Harnani, Susi Syafriadi Syafriadi Vicias, Icha Arum Warsito Warsito Warsito, W Wasinton Simanjuntak Yanti Yulianti Yuniar, Noeris