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Indonesian Journal of Electronics and Instrumentation Systems

ijeis
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Published by Universitas Gadjah Mada

ISSN : 20883714 EISSN : 24607681 DOI : -

Core Subject : Engineering,

Electrical & Electronics Engineering

IJEIS (Indonesian Journal of Electronics and Instrumentation Systems), a two times annually provides a forum for the full range of scholarly study. IJEIS scope encompasses all aspects of Electronics, Instrumentation and Control. IJEIS is covering all aspects of Electronics and Instrumentation including Electronics and Instrumentation Engineering.

Arjuna Subject : -

Articles 292 Documents

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Implementasi Pengolahan Citra Digital Sebagai Pengukur Nilai Resistor Pada Sistem Pemindai Resistor Berbasis Android Satrio Firmansyah; Danang Lelono; Rade Sumiharto
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

One of the gadget that is often used is Android smart phones. Android is an OpenSource, it could help user and developer to operate and develop Android Application. There are several problems that need image as an input system, it is caused by the humas’s ability in doing some mathematic functions or supported algorythm. To make the selection color used HSV color space. By using HSV color space allows a system to determine the color value resistor, because the hue value of the component is a representation of the actual color value. This is supported by the saturation level that serves as a color saturation and value as a brightness of color.The results of this research is an implementation of digital image processing as a measure of the value of the resistor. The system is tested by the influence of light intensity and the distance between the camera and resistor. The best results were achieved with the conditions of the room in light intensity between 400 lux to 1200 lux the detection distance between the camera and resistor is 20 cm of maximum value.

Analisis Perkiraan TDOA menggunakan Algoritma LMS Adaptif pada Pelacakan Paus Lodan Andriyan Permana; Agfianto Eko Putra; Catur Atmaji
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Research on TDOA estimation in sperm whale tracking has been done [1] that uses the Teager - Kaiser operator in improving accuracy the TDOA estimation using adaptive LMS algorithm on sperm whale tracking. However, further researches on the right convergence factor (μ) (fast and accurate) in TDOA estimation using adaptive LMS algorithms for sperm whale tracking have not been performed. Will be analyzed the TDOA estimation using adaptive LMS algorithm in sperm whale tracking with the variation of μ. As a reference to determine the right value of μ, the results of sperm whale tracking[2] is used.TDOA estimation using Adaptive LMS algorithm was first published by Benesty [3]. The approach taken is based on estimation of the impulse responses from source to receivers. In the adaptive LMS algorithm function updates the coefficient with μ as adaptation step. TDOA values obtained from the difference between the two impulse responses.From the results, values changing of μ affect the speed of TDOA estimation using the LMS adaptive algorithm. However, the wrong value of μ is lead to inaccurate sperm whale tracking results. The best value of μ for TDOA estimation using the LMS adaptive algorithm for sperm whale tracking is 0.01.

Purwarupa Alat Ukur Daya Listrik Berbasis Netduino Plus Irma Nirmalasari; Agfianto Eko Putra; Bambang Nurcahyo Prastowo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Along with the development of technology a lot of methods of current, voltage and power factor measurement are developed. In this research is developing innovative instrumentation systems that use electrical power measuring devices that can be accessed online so that information on the number of power consumption and the amount of the bill can be accessed through the website . This system was designed using the Netduino Plus, ACS712 5A as sensor for detecting current and also use voltage gauges module that is used to detect the voltage with using the principle of current rectifier with a voltage divider circuit . The mechanism of usage electricity accumulation which is calculated for every second. Prototypes of electric power measuring instrument is successfully made and it is known that the current sensor system has the percentage accuracy of 98.4 %, the voltage measuring module has a percentage accuracy of 96.6 % .

Purwarupa Pengoperasian TV Dengan Mendeteksi Isyarat Jari Berbasis Pengolahan Citra Digital Handreas Okta Wibawa; Agus Harjoko
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

The development computer technology and electronics very rapidly at this time makes people start looking for other solutions to perform activities easier and more practical. Technologies are developed and can be used at this time it is possible to facilitate the activities human beings to operate TV with finger gesture. In this research, digital image processing of technology can be used to operate TV using webcam and computer as image processing. Input this research is hand image that catched by webcam on computer. Then hand image processed through image processing system to obtain results form value fingers. This value indicates the number equal to number fingers detected by webcam camera on monitor screen. Microcontroller function is receives serial data from results image processing and serves serial data conversion value into instructions can operate TV. Color model used in research is HSV. First step testing this research is setting room in order to capture image for get best results in any room. Results of the research found best value for testing operation TV with finger gesture is : for value light intensity is 12 lux, best distance is 70 cm and best baskground is blue.

Identifikasi Model dari Pesawat Udara Tanpa Awak Sayap Tetap Jenis Bixler Abdul Majid; Raden Sumiharto; Setyawan Bekti Wibisono
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Flight model is one of importing thing in fixed-wing unmanned aerial vehicle (UAV) control system development, mainly in the aircraft autopilot. Through this flight model, the aircraft motion can be represented and simulated.In this research, the flight model is obtained through system identification and system modelling of Bixler fixed-wing unmanned aerial vehicle. System identification is based on experiment data and use state-space model structure. There are three stages in this research, aircraft motion system modelling, flight data collecting, and flight model identification. Through those three stages, Bixler fixed-wing unmanned aerial vehicle flight model is obtained as represented in two modes, longitudinal mode and lateral modeThe Bixler fixed-wing unmanned aerial vehicle longitudinal mode flight model is obtained using 13 parameters. The lateral mode is obtained using 11 parameters. All modes are in 4th order state space model structure.

Rancang Bangun Sistem Pencampur Bahan Minuman Bersoda Berdasarkan Kadar Keasaman Berbasis PLC OMRON CP1H-XA40DR-A Rindi Kusumawardani; Raden Sumiharto
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Have been made a prototype of soft drinks mixing ingredients system based on acidity controled by PLC OMRON CP1H-XA40DR-A. This system have been made based on the importance of pH levels on soft drinks. This mixing ingredients system has Human Machine Interface (HMI) for control and input on the system. High accuracy is needed in the process of mixing the ingredients of soft drinks to mantain the quality of the product. One of the factor that is considered to mantain it quality is to ensure pH levels of the mixing to standard production. The automation of soft drinks mixing ingredients systems is based on PLC by OMRON with serial number CP1H-XA40DR-A. This system equipped with eTape height sensor to detect height of the fluid, motor washer to pump the fluid, pH electrode PE-03 sensor to read the acidity. The results of this study is a soft drinks mixing ingredients systems that automatically mixes the fluid according to the pH input by user. There are a range of acidity options available in this system, pH 4 to pH 6. The accuracy of the fluid mixing process is equal to 98,45%.

Sistem Pemantauan Ruangan Dengan Server Raspberry Pi Egrit Nurcahyo Wijatsongko; Agfianto Eko Putra; Bambang Nurcahyo Prastowo
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Continuous record will overload storage, due to big size recorded video files. One of the solution to this problem is to make system only record at necessary time. The example of the “necessary time” is when someone enter the room. Because of that, surveillance system which can detect motion in the room is needed. In this research, mentioned problem was tried to be solved by design and build a mini computer (Raspberry Pi) based room surveillance system. This surveillance system is made with Motion program. Motion program handle motion detection and streaming. Besides that, system also made so it can send notification via email, when motion is detected. For security and back up data reasons, system will also upload recorded video to Google Drive. System consists of one server and one client that are connected using WLAN network. The System performance was tested by observing recorded video frame rates as parameter. The motion detection of the system was also tested on various light intensity. From the test, got that the best condition for the system is at frame size 320x240 with light intensity more than 8 lux.

Desain dan Implementasi On-Board Computer/ On-Board Data Handling (OBDH) pada UGM-SAT Bakhtiar Alldino Ardi Sumbodo; Agfianto Eko Putra
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

The engineering model of OBDH for UGM-SAT was designed to control data handling program and tointerface the satellite subsystems to OBDH. The OBDH’s based on the Microchip microcontroller PIC16F877A with 20 Mhz clock speed. The system’s equipped with four external 24LC512 EEPROM’s with a storage capacity of 256 kB. The external memories’re used to store housekeeping information. The system’s equipped with a ACS712ELCTR-05B-T current sensor, voltage sensor and LM335Z temperature sensor. The accuracy of the measurements’re more than 99%. The system’s also equipped with IC Real Time Clock (RTC) DS3232M with an internal clock of 32.768 Hz, which’s used to synchronize the time between OBDH with other subsystems.The components of OBDH was chosen with industrial standards, small packages and low power. OBDH’s designed to operate in environments with extreme temperature conditions. The communication with other subsystems was designed to use I2C-bus. Protocol data for communication between the satellite subsystems have been designed. A HammingCode(8,4) algorithm has been implemented to protect housekeeping information from being corrupted due to radiation. Error detection and correction speed is 1.800 byte/s. The engineering model of OBDH for UGM-SAT have met the standard specifications, and ready for further testing hardware and software.

Balancing Robot Menggunakan Metode Kendali Proporsional Integral Derivatif Rizka Bimarta; Agfianto Eko Putra; Andi Dharmawan
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Center of gravity’s inverted pendulum is located above its pivot point therefore inverted pendulum is unstable. Specific control is needed so that inverted pendulum stable which is by move the cart where the pendulum is mounted. Inverted pendulum application can be found in balancing robot. The purpose of this research is to design a system to control a two wheeled robot using the control system to balance it.The inputs are accelerometer to measure angular acceleration (m/s2) and gyroskop to measure angular velocity (rad/s). The output’s of accelerometer and gyroscope are fused by complementary filter algorithm method to get the actual angle. The actual angle is then compared to set point which is 0o. The differences between set point and actual angle are processed using Proportional Integral Derivative control method. The process of PID control is programmed using Arduino IDE which its result is fed to DC motors. The direction of DC motors are determined by two conditions, if actual angle less than zero then DC motors will spin backwards. Whereas if actual angle more than zero then DC motors will spin forward. The PID control’s constans value based on Ziegler-Nichols Oscillation tuning method are Kp=1.5, Ki=0.75, Kd=1.875 and complementary filter’s coefficient is a=0.96.

Implementasi Kontrol Model Prediksi Berbasis ANFIS Pada Mesin Penghasil Uap Air Rangga Kurniawan Ladioktaviagusdi; Raden Sumiharto
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 1 (2015): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Steam generator has problem such as dependent variable on the output parameters, therefore it is needed a way to get system behavior of steam generator which is represented by model of the plant. Implementation of the model predictive control in this research was represented by using simulation, so the object that was controlled was virtual steam generator. In this research was used MATLAB software as a virtual steam generator and also for computes ANFIS, whereas the LabVIEW software was used as a representation of control room.From the research, it was found the best parameters for each ANFIS that was used as a model unit in the model predictive control, that was by using historical data 4th as much as 800 datas, the percentage ratio of learning for training data and checking data on each ANFIS for each model structures sequentially by 90% and 10%, except the percentage ratio for ANFIS on water flow parameter sequentially by 80% and 20%. The results of validation RMSE (Root Mean Square Error) by testing for 100 datas, it was obtained values as follows: water flow=1.9941, water pressure=48.0236, air flow=604.0621, fuel gas pressure=0.7087, fuel gas temperature=18.6594, O2 content=0.9591, steam pressure=76.1557, steam quality=3.9734 and steam flow=264.9173.

Page 9 of 30 | Total Record : 292

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