International Journal of Scientific Engineering and Technology

Angelo A. Beltran ¹, Francisco I. Alano ¹, Vernadette B. Alvarez ¹, Rey Jerald D. Habab ¹, Peter Mark P. Buay ¹

Affiliations
1 ECE Department, Adamson University, Manila, PH

Abstract

This paper presents Matlab simulation which was used to create a virtual environment using the graphical user interface that contains parameters to reproduce conditions in real environment situations. The system identifies the signal strength of a signal from an antenna array, which can be directional by using beam forming. The concept allows better reception for intended users and almost no signal for the non intended users.

Keywords

Beam Forming, Linear Phased Array, Uniform Linear Array.

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Angelo A. Beltran ¹, Erick Powell S. Baldivicio ¹, Kathleen Zillah G. Espere ¹, Jhalysa Mae R. Maminta ¹, Kimberly D. Villostas ¹

Affiliations
1 ECE Department, Adamson University, Manila, PH

Abstract

This paper presents a approach on how to reduce stress and fatigability in the user’s eyes, muscles and also backbone when the user is using a computer. The study uses image processing technique for the detection of the face of the user. The monitor of the desktop computer is connected with a DC motor that will auto align itself to the face of the user in order to make sure it is in front of the user’s face. If the user moves its head sideward the monitor will align and this will help the user to have movements of the bone and also muscles on its back. The movement of the monitor through the microcontroller and also the face detection part was programmed on the python software.

Keywords

Computer Workstation, Ergonomic, Face Detection, Image Processing.

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Angelo A. Beltran ¹, Cayetano D. Hiwatig ², Nelor Jane R. Laguna–Agustin ², Marjorie B. Villanueva ²

Affiliations
1 ECE Department, Adamson University, Manila, PH
2 ECE Department, Technological Institute of the Philippines, Manila, PH

Abstract

Majority of engineering colleges, universities and the technical institutions are undertaking all initiatives to stay competitive. Efforts are exerted to continuously improve the curriculum in order to provide quality and relevant education for the students in response to global call for outcomes-based education. This paper presents the procedures, techniques, methods, and advantages of using Altium Designer software in teaching electronic circuits. Altium Designer is a schematic capture, simulation, and PCB design software, dedicated to analyzing electronic circuits which is based on interconnected icons of electronic components. The approach makes it easier for the students to visualize the system they are attempting to design, model, and study. Likewise, it makes debugging and error correction simpler. Moreover, an example has been provided also to show how to use the software for teaching and research in electronic circuits.

Keywords

Altium Designer, Computer Simulation, Electronic Circuit Analysis, PCB, Schematic Circuit, Teaching Strategy.

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Joanna Marie M. Baroro ¹, Melchizedek I. Alipio ¹, Michael Lawrence T. Huang ¹, Teodoro M. Ricamara ¹, Angelo A. Beltran ¹

Affiliations
1 School of Graduate Studies, Mapua Institute of Technology, PH

Abstract

This paper presents an automation of packaging and material handling using a programmable logic controller. The idea is to automate the process of placing the materials inside a box, detecting good and bad items in terms of weight, and sealing using a packaging tape. The purpose of the study is to replace the manual system being used in the industry, compare the time, and manpower requirement for both the existing system with the proposed automated system. The Mitsubishi FX series programmable logic controller is used to mechanize the system. Sensors such as proximity and load sensor are used to provide the input to the system. The motors, pneumatics, and also the solenoids serve as the output. The researchers used a ladder diagram as a software that will control then the whole system between its input and output components. An experimental prototype is produced to fully automate the system. The experimentation is done through different trials and the rate of travel time is measured thru averaging. It is found out that the system decreases time and manpower requirements for every station as compared with traditional manual system. A reduction of 50% to 75% was observed in terms of time allotment for filling, weighing, and sealing stations. About 90% of full automation without human is specified also in the system. The paper ends with the recommendation of integrating the experimental prototype with the human machine interface or HMI, and feedback mechanisms for the rejected items using artificial intelligence techniques and methods.

Keywords

Packaging, Programmable Logic Controller, Material Handling, Load, Sensor.

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Angelo A. Beltran ¹

Affiliations
1 School of GS and School of EECE, Mapua Institute of Technology, PH

Abstract

Sinusoidal pulse width modulation is a popular modulation for most alternating current induction motor. It only requires fewer calculations and is easy to implement. However, the shortcomings of using it are low DC voltage utilization, and poor inverter transmission capability. In recent years, there is an increasing trend and more research concentration of using space vector pulse width modulation in adjustable speed drives and renewable energy systems because it has better DC bus utilization, better performance, lower loss, lower ripples, and wide application range. This paper introduces space vector pulse width modulation and applies to speed control of alternating current induction motor. The three phase alternating current induction motor is reviewed based upon space vector representation. The development of space vector pulse width modulation and implementation to speed control of induction motor is done using Matlab/Simulink. The simulation is conducted by analyzing the response of stator current, stator voltage, speed, voltage, frequency, and the electromagnetic torque. Simulation results shows that space vector pulse width modulation which generates the voltage patterns at real time is able to control the speed of a three phase alternating current induction motor. It indicates the validity of space vector pulse width modulation in controlling the speed of a three phase alternating current induction motor (ACIM). In conclusion, the use and realization of space vector pulse width modulation has been validated by the Matlab/Simulink simulation experiment for controlling the speed of a three phase alternating current induction motor.

Keywords

Induction Motor, Simulation, Space Vector Pulse Width Modulation, Speed Control.

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Angelo A. Beltran ¹, Christian Deus T. Cayao ¹, Jay-K. V. Delicana ¹, Benjamin B. Agraan ¹

Affiliations
1 School of GS and School of EECE, Mapua Institute of Technology, PH

Abstract

This paper presents reduced image noise on shape recognition by incorporating singular value decomposition. The singular value decomposition is used for image noise reduction for pick and place robotic system. It is possible to find the best approximation of the original data points using fewer dimensions; hereby, processing the edges of the image by smoothening. Experimental studies have been carried out to verify the effectiveness of the proposed scheme. The graphical user interface (GUI) uses the image acquisition toolbox of Matlab and it is used to capture the image. The object borders are decomposed into the vector points in the form of matrix. Results have shown that the proposed method is effective and the robotic arm then enables to determine the object through various tests of the different shapes. By using the proposed scheme, additional functions can be added such as monitoring, roaming, etc. leading to a smart pick and place robotic system.

Keywords

Noise Reduction, Singular Value Decomposition, Shape Recognition, Robotic Arm, Vector Points.

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