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All Journal Indonesian Journal of Electronics and Instrumentation Systems Journal of Natural Sciences and Mathematics Research

Triyogatama Wahyu Widodo

Dapartment Of Computer Science And Electronics, Faculty Of Mathematics And Natural Science, Universitas Gadjah Mada, Yogyakarta

Author-ID : 416263

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

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The Application of Music Therapy For Children with Autism Based On Facial Recognition Using Eigenface Method Yusufiyah, Hesti Khuzaimah Nurul; Usuman, Ilona; Putra, Agfianto Eko; Widodo, Triyogatama Wahyu
Journal Of Natural Sciences And Mathematics Research Vol 3, No 1 (2017): Volume 3, Nomor 1, 2017
Publisher : Faculty of Science and Technology, State Islamic University Walisongo Central Java

This research is motivated by the condition of children with autism who require continuous monitoring without a parent accompany, and certain therapies who is capable to reduce repetitive behaviors and increase the concentration. Music therapy is one of the treatment which able to perform it. The implementation of this research is located in a special schools with autism, the perform is proper at certain times and requires tools for music therapy. Therefore, the integrated device was made to monitor the activities of children with autism, as well as providing music therapy automatic face recognition based on Eigenface method.This device perform when the children with autism under certain conditions (e.g. crying, the teacher would not work orders, etc.), then by capturing the the facial image, the system will process to compare the similarity with the existing database. Then, the shortest distance of euclidean is chosen. If the captured of facial image is similar to the one existing database, then the music is performed as music therapy for children with autism. The results of this system, indicates that the childs responses become more calm, easy concentration, and the repetitive attitude is reduced. While the accuracy of the system achieves by 80% (compare with the old and new database) and 20%. (without new database). Â©2017 JNSMR UIN Walisongo. All rights reserved.

Purwarupa Sistem Pembayaran Retribusi Jalan Tol Berbasis Teknologi RFID Vicky Primandani; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 2, No 1 (2012): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

AbstrakSistem pembayaran retribusi tol manual dan semi-otomatis yang diterapkan di Indonesia sering mengakibatkan terjadinya penumpukan kendaraan di gerbang tol. Hal tersebut disebabkan oleh lambatnya transaksi yang dibutuhkan oleh setiap kendaraan.Penelitian ini membahas tentang penggunaan RFID (Radio Frequency Identification) sebagai sistem identifikasi dan pembayaran retribusi tol. Tujuan utama sistem ini yaitu untuk meningkatkan kecepatan transaksi pembayaran tol sehingga penumpukan kendaraan yang sering terjadi di gerbang tol dapat ditanggulangi. Purwarupa sistem ini terdiri dari reader RFID dan tag RFID untuk mengidentifikasi kendaraan, portal gerbang tol, dan GUI untuk proses transaksi.Tag RFID mengirim data ke reader RFID yang telah terpasang di setiap gerbang tol. Jika data pada tag RFID telah teregistrasi, portal gerbang tol akan terbuka dan transaksi akan diproses. Tarif retribusi akan ditentukan berdasarkan dua parameter, yaitu golongan kendaraan yang melewati gerbang told an gerbang tol yang dilalui kendaraan.Sistem pembayaran retribusi sepenuhnya berjalan secara otomatis, pelanggan tidak perlu membuka kaca mobil untuk membayar retribusi tol. Semua otomasi dapat meningkatkan kecepatan sistem pembayaran retribusi tol sehingga penumpukan kendaraan yang sering terjadi di gerbang tol dapat ditanggulangi. Kata Kunci— gerbang tol, penumpukan kendaraan, RFID, retribusi tol AbstractManual and semi-automatic (e-toll) toll collection system in Indonesia often causes the queue in the toll gate. It is because the delay that necessary for each vehicle to do the transaction. This research talks about RFID using (Radio Frequency Identification) as a vehicle identification and toll collection system. The main purpose of the system is to improve the toll collection transaction speed thus the queue in the toll gate will be prevented. The prototype of the system consist of RFID reader and tag as a vehicle identification, a toll gate, and a GUI to process the transaction.RFID tag send the data to RFID reader that already installed on each toll gate. If the data was registered, the toll gate will open and the transaction will be processed. The tariff will be determined by two parameters, the type of the vehicle that passes the toll gate and the toll gate which passed by the vehicle.The toll collection process is fully automatic, no need to open the vehicle window, to pay the toll collection. All of the automation will improve the transaction speed of toll collection system thus the queue in the toll gate will be prevented. Keywords— toll gate, the queue, RFID, toll collection

Implementasi DuinOS pada Purwarupa Sistem Penyortiran Barang Berbasis Arduino Uno Ferry Agusta Putra; Andi Dharmawan; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 2, No 2 (2012): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

AbstrakTelah dibuat sebuah purwarupa sistem penyortiran barang berdasarkan ketinggian menggunakan RTOS. RTOS sendiri merupakan hasil pengembangan pada bidang IT yang kemudian bisa diadaptasikan untuk bidang otomatisasi, salah satunya digunakan untuk merancang sistem kontrol secara real time dan multitasking. Sistem ini menggunakan devolepment board Arduino Uno sebagai pusat pengendali. Sedangkan RTOS yang digunakan adalah DuinOS. Untuk mendeteksi ketinggian benda digunakan sensor SRF06 sedangkan untuk mengetahui keadaan suhu mesin konveyor digunakan sensor LM35. Antarmuka pada Personal Computer menggunakan Borland Delphi 7. Pada antar muka ini untuk mengendalikan motor dan pengaturan setpoint batas ketinggian benda yang akan disortir kemudian data disimpan pada sebuah file. Sistem yang telah dibuat mampu melakukan proses otomasi pendeteksian ketinggian barang dan dilanjutkan dengan proses penyortiran barang. Model barang terdapat 5 buah dengan variasi ketinggian yang berbeda-beda mulai dari 3 cm hingga 7 cm dengan panjang 5 cm dan lebar 3 cm. Antarmuka yang telah dibuat mampu melakukan pengaturan dan pemantauan sistem. Memori yang digunakan sistem sebesar 11.332 byte pada memori flash dan 1680 byte digunakan pada memori RAM. Tick time default sebesar 1 milidetik telah digunakan pada sistem dan sistem sudah bisa bekerja dengan baik. Kata Kunci— DuinOS, Arduino UNO, RTOS, task, multitasking. AbstractHave made a prototype system based on the height of sorting items using RTOS. RTOS itself is the result of the development in the field of IT which can then be adapted to the field of automation, one of which is used to design the control system in real time and multitasking.The system uses an Arduino Uno board devolepment as the central controller. While the RTOS used is DuinOS. To detect the height of the goods, is used SRF06 sensor. while to see how the engine temperature conveyors, is used sensor LM35. Interface on Personal Computer using Borland Delphi 7. At this interface is able to control the motor and height limit setpoint adjustment items to be sorted then the data is stored in a file.The system has been made capable of performing detection process automation the height of goods and continued with the process of sorting goods. Models goods are 5 pieces with a variety of different heights ranging from 3 cm to 7 cm by 5 cm long and 3 cm wide. The interface has been made capable of setting and monitoring the system. The memory used by the system to 11 332 bytes and 1680 bytes of flash memory used in RAM memory. The default tick time of 1 ms was is used in the system and the system is able to work properly.Keywords: DuinOS, Arduino UNO, RTOS, task, multitasking. Keywords— DuinOS, Arduino UNO, RTOS, task, multitasking.

Auto-Configuration of Wireless Sensor Networks on Area Border Pole Triyogatama Wahyu Widodo; Sigit Diantoro
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 4, No 1 (2014): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Penelitian Mobile Ad-Hoc Networks (MANET) merupakan salah satu perkembangan teknologi jaringan sensor nirkabel (JSN). Berbagai metode akses jaringan juga telah diteliti, salah satunya teknik token ring. Teknik ini menggunakan prinsip ring dimana setiap node terhubung satu arah dengan node lainnya sehingga membentuk sebuah topologi ring. Berdasarkan perkembangan tersebut, dibuatlah sebuah sistem konfigurasi otomatis dari jaringan sensor nirkabel yang memiliki kemampuan autonomous server/client, pemberian alamat node, sinkronisasi paket data, dan deteksi adanya node yang masuk atau keluar secara otomatis dan dinamis.Penerapan JSN juga telah merambah berbagai bidang keilmuan. Salah satunya pemanfaatan JSN pada patok batas wilayah yang memiliki kemampuan menghitung keliling dan luas terhadap tata letak patoknya, menggunakan bantuan metode haversine untuk mencari jarak antar patok dan rumus matriks untuk menghitung luas. Patok adalah node yang tersusun dari sensing unit, computation unit, dan communication unit. Dengan modul GPS sebagai sensing unit, ATmega128 sebagai computation unit, dan Xbee sebagai communication unit. Hasil dari penelitian ini adalah protokol konfigurasi otomatis yang diterapkan pada patok batas wilayah, dengan kemampuan mengukur keliling dan luas wilayah. Sistem telah diuji dan didapatkan hasil terhadap perilaku node yang telah ditanamkan protokol konfigurasi otomatis. Kata kunci — mobile ad-hoc networks, token ring, jaringan sensor nirkabel, haversine, Xbee Research on mobile ad-hoc networks (MANET) is one of wireless sensor networks (WSN) technology development. Any routing methods have been researched, one is token ring technique. This technique use principle of ring that every node is connected one direction with the other, so make the ring topology. Based on that development, it was made an auto-configuration system of wireless sensor network that have ability to autonomous server/client, giving destination of node, data package synchronization, and detect node in or node out with autonomous and dynamic.Application of WSN is also touch any science sector. One is WSN’s usage on area border pole that have ability to count perimeter and area base on location of pole, with help from haversine method to know the distance between the pole and matrix formula to count the area. Pole is node that arranged from sensing unit, computation unit, and communication unit. With GPS module as sensing unit, ATmega128 as computation unit, and Xbee module as communication unit.The result is a protocol of auto-configuration that applicated on area border pole, with ability to count perimeter and area. The sistem was tested and get the result by node behavior that have embedd the protocol. Keywords— mobile ad-hoc networks, token ring, wireless sensor network, haversine, Xbee

Purwarupa Mekanisme Akuisisi Data Rotary Vane Positive Displacement Flowmeter dengan Kompensasi Suhu Ahmad Fajrul Falah; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 4, No 1 (2014): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Rotary vane positive displacement (PD) flowmeter termasuk dalam kategori flowmeter yang bekerja menggunakan prinsip operasi volumetric flow. Perubahan suhu pada fluida akan mengakibatkan perubahan pada volume fluida baik berupa penyusutan maupun pemuaian. Penelitian ini bertujuan untuk merancang dan mengimplementasikan purwarupa mekanisme akuisisi data rotary vane PD flowmeter dengan turut menyertakan suhu sebagai variabel kompensasi pengukuran.Aliran fluida disimulasikan menggunakan motor DC yang memutar model chamber, sedangkan perubahan suhu lingkungan disimulasikan menggunakan elemen pemanas. Nilai suhu standar yang digunakan sebagai acuan adalah 15°C. Pengujian dilakukan dengan memberikan variasi nilai pengaturan koefisien muai 0,0007/°C dan 0,001/°C, kecepatan aliran 335 L/min, 506 L/min, dan 556 L/min, serta nilai pengaturan suhu 30°C, 35°C, 40°C, 45°C, dan 50°C.Hasil percobaan didapatkan nilai kompensasi volume tertinggi adalah 65,854 liter sedangkan yang terendah adalah 10,530 liter. Pada nilai volume dan suhu yang sama, semakin tinggi nilai koefisien muai suatu fluida maka semakin tinggi pula nilai kompensasi yang diberikan demikian juga sebaliknya. Kata kunci— Rotary Vane PD Flowmeter, Kompensasi Suhu, Koefisien Muai Rotary vane positive displacement (PD) flowmeter is included in the category of flowmeter that works using the principle of volumetric flow operation. Changes in fluid temperature will result in changes in the volume of fluid in the form of shrinkage or expansion. This research aims to design and implement a prototype of rotary vane PD flowmeter data acquisition mechanism with also include measurement of temperature as a variable compensation.Fluid flow is simulated using DC motors that rotate the chamber model, although changes in environmental temperature are simulated using a heating element. Temperature value is used as the reference standard is 15°C. Testing is done by providing a variety of setting value of expansion coefficient at 0,0007/°C and 0,001/°C, flow rate at 335 L/min, 506 L/min, dan 556 L/min, and also temperature setting value at 30°C, 35°C, 40°C, 45°C, and 50°C.The results is the highest volume compensation value is 65,854 liters, while the lowest value is 10,530 liters. Meanwhile value of volume and temperature, the higher the coefficient of expansion of a fluid, the higher the value of the compensation given conversely. Keywords—Rotary Vane PD Flowmeter, Temperature Compensation, Coefficient of Expansion

Layar Sentuh Berbasis FTIR (Frustrated Total Internal Reflection) Sebagai Papan Tulis Elektronik Afriyani Soraya Sari; Agus Harjoko; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 4, No 2 (2014): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Abstrak Teknologi berkembang dengan kian pesat dan telah diterapkan disegala aspek dan bidang. Dunia pendidikan pun menjadi salah satu target pengembangan teknologi tersebut. Sebagai contoh konkrit adalah digunakannya dukungan teknologi audio visual dalam upaya meningkatkan efektifitas proses pengajaran.Penelitian ini bertujuan untuk mengimplementasikan salah satu metode layar sentuh berbasis Frustrated Total Internal Reflection (FTIR) sebagai papan tulis elektronik. Sistem ini dibangun dari layar akrilik, LED inframerah, proyektor LCD, webcam inframerah, CCV (Community Core Vision) sebagai software pengolah citra serta program aplikasi papan tulis yang dibuat dengan Adobe Flash. Mekanisme kerja sistem cukup sederhana, yakni ketika jari pengguna ditekankan pada layar akrilik, akan timbul distorsi pada titik sentuh sehingga webcam dapat menangkap blob yang terbentuk dari gerakan tersebut menggunakan CCV, dimana data dari CCV tersebut digunakan sebagai input masukan untuk papan tulis elektronik. Hasil dari penelitian ini adalah sebuah papan tulis elektronik yang diwujudkan dalam bentuk perangkat lunak dan perangkat keras. Pengujian model dilakukan dengan uji efektifitas fungsional sistem sebagai papan tulis elektronik. Hasil pengujian dengan variasi pencahayaan didapatkan sistem dapat bekerja optimal dalam ruang tertutup dengan tidak adanya gangguan sinar inframerah lain termasuk cahaya matahari. Kata kunci— Layar Sentuh, FTIR, CCV, Papan tulis elektronik. Abstract The technology has grown rapidly and its application in many aspects and fields. The education became one of the target of these technology development. As an example is the use of audio-visual technology in effort of increasing the effectiveness in teaching process.This research is aimed to implement a touch-screen method based on Frustrated Total Internal Reflection (FTIR) as an Electronic Blackboard. This system is constructed from acrylic screen, infrared LED, LCD projector, infrared webcam, CCV as image processing software and blackboard application program created with Adobe Flash. The mechanism is quite simple, i.e. when the user’s finger touch the acrylic screen, distortion will occur at the touching point so that the webcam can capture the movement of blob uses CCV, where the CCV’s data is used as an input for the Electronic Blackboard.Result from this research is electronic blackboard manifested in the form of software and hardware. The model is tested with the functional system effectiveness as an electronic blackboard. The test result with the variety of lighting conditions, the system can work optimally in a confined space with non interupting infrared light including the sunlight. Keywords— Touch Screen, FTIR, CCV, Electronic Blackboard

Rancang Bangun Sistem Jaringan Nirkabel untuk Pemantauan Penggunaan Air Pelanggan PDAM Sean Satya Henura; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 2 (2015): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

This study builds system prototype to monitor customer’s usage of water provided by PDAM through wireless network. The system were made to help customers who don’t have access to their water usage history, preventing them to properly manage it. On a bigger scale, this system could be solution to the company problem on collecting their customer usage data which have to be done by visiting each customer’s house monthly.This system was made by attaching components to water meter that capable of sending meter data to a server to be saved on MySQL database. For usage monitoring, an app made for android smartphone that sends request to server asking for usage data of certain time wanted by the user was used. The data were sent using HTTP protocol on internet connectivity gained from Ethernet module on water meter part and either cellular connection or Wi-Fi on android smartphone part. Results gotten from the conducted tests show that functional-wise, the monitoring can be done accurately using 1.046 KBps bandwith during process. Of the 5 protocol tested, all proved to be working as designed. The tests show that data sending of water meter and data saving on server database are working.

Implementasi Optical Character Recognition Berbasis Backpropagation untuk Text to Speech Perangkat Android Kristina Apriyanti; Triyogatama Wahyu Widodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 6, No 1 (2016): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Procedures using text to speech application on a mobile device generally at this time is user must manually enter the word to be actualized in speech. In this study, designed a words input system for text to speech application using digital image processing. This system makes users simply to do the words capturing that will be voiced without manually typing in the text area input.The method used in this system includes image acquisition, image pre-processing, character segmentation, character recognition, and integration with text to speech engine on mobile devices. Image acquisition was performed using the camera on a mobile device to capture the word to be entered. Character recognition using back propagation algorithm. Image processing system successfully created and then integrated with Google Text to Speech engine.Character recognition system in this study using a model of neural networks (ANN) with an accuracy of 97.58%. The system is able to recognize some types of font that is Arial, Calibri, and Verdana. The mean recognition accuracy on the test sample used in this study 94.7% with distance shooting conditions within the range 3-8 cm and the camera upright position facing the letter.

Sistem Kontrol Torsi pada Motor DC Arifin Wahid Ibrahim; Triyogatama Wahyu Widodo; Tri Wahyu Supardi
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 6, No 1 (2016): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

The use of a DC motor in the industrialized world is very important. Speed of DC motor and torque of DC motor greatly affects quality and quantity of product. Therefore, we need control system of a DC motor that can be set speed and torque. The number of industry players complained about damage to the DC motor because transported load torque of motor exceeds capabilities of torque of DC motor. Based on these problem, we should make torque control system in DC motor.Torque control system made by regulating armature current of DC motor separately excited with current field constant condition. Torque control system consist of speed control and current control, namely control system two level. Output signal speed control system will be the current reference signal.Testing has been carried out with a maximum load of 3690 grams and a nominal current of 0.8 A or nominal torque of 0.323 Nm. The results shows the effective torque of motor is able to be set in the range of 0.182 Nm - 0,243 Nm. Expected to value effective of regulated torque is able to withstand infinite heavy loads without damaging the motor.

Sistem Pengendali Pengambilan Gambar Pada Kamera DSLR Melalui Protokol PTP Muhammad Iqbal; Triyogatama Wahyu Widodo; Bakhtiar Aldino Ardi Sumbodo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 6, No 2 (2016): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

DSLR is a professional camera that uses a high-quality digital sensor with high image sharpness. This camera can use various lenses based on user needs. Taking pictures using a digital SLR camera is not an easy matter, the position of object, location, and intensity of light affect the resulting image. In this research, designed and built a system that can control the DSLR cameras via PTP protocol. Image capture is implemented using the USB Host Shield, which is a tool that is used as a connector between a DSLR camera with an Arduino as a controller. Results of this research is a tool that is capable of taking pictures on the object by sending instructions via existing command on the Arduino serial monitor. The system test is done by testing image capturing through the PTP protocol, the change of the camera position, the influence of the camera's sensitivity to light, as well as the influence of light intensity. The result is DSLR cameras via PTP protocol can take a picture, adjust the position, adjust the ISO in accordance with the needs of the object, and set the white balance according to the location where the image capturing done.

Co-Authors Afriyani Soraya Sari Agfianto Eko Putra Agfianto Eko Putra Agus Harjoko Ahmad Fajrul Falah Andi Dharmawan Arifin Wahid Ibrahim Bakhtiar Aldino Ardi Sumbodo Bakhtiar Alldino Ardi Sumbodo Brisma Meihar Arsandi Chrisal Aji Lintang Dewinta Nila Hapsari Eviyan Fajar Anggara Faizah Faizah Farida Isroani Ferry Agusta Putra Gong Matua Hesti Khuzaimah Nurul Yusufiyah Ikhwannuary Raditya Priyadana Ilona Usuman Ilona Usuman Inca Inca Kristina Apriyanti Leonard Fidelcristo Supit Mitrayana - Sean Satya Henura Sigit Diantoro Soca Baskara Tri Wahyu Supardi Tri Wahyu Supardi Vicky Primandani Yusufiyah, Hesti Khuzaimah Nurul

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