Articles
<![CDATA[Innovative non-contact r-r intervals estimation using viterbi algorithm with Squared Branch Metric (VSBM) ]]>
<![CDATA[Zar, Win Thu]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Naing, Zaw Min]]>
<![CDATA[ Jurnal Pendidikan Teknologi Kejuruan Vol 7 No 1 (2024): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/jptk.v7i1.35623
<![CDATA[Non-contact heartbeat detection with Doppler sensor is a critical component of remote health monitoring systems, enabling continuous and unobtrusive monitoring of an individual’s cardiovascular health. This paper reported an innovative approach for non-contact heartbeat detection using the Viterbi algorithm, leveraging the distribution of the difference of two adjacent R-R Intervals (RRIs). RRIs represented the time between successive peaks in the electrocardiogram (ECG) signal and are fundamental in analyzing heart rate variability, mental stress conditions and heart diseases. Numerous non-contact Doppler sensor-based methods have been proposed for heartbeat detection, leveraging the evaluation of RRIs without physical device attachment. However, challenges arise from unwanted peaks caused by respiration and slight body movements, even when the subject remains motionless with normal breathing. This study presented an innovative approach for selecting heartbeat peaks utilizing the Viterbi algorithm with the squared difference of two adjacent RRIs as the Branch Metric (BM). The preliminary experiments revealed that the difference between two adjacent RRIs closely follows a Gaussian distribution. Building upon this observation, this paper considered the Viterbi algorithm with Squared Branch Metric (VSBM) to estimate the heartbeat accurately. To assess the accuracy of peak selection method, an experiment was conducted by comparing it with two existing peak detection methods: (i) Doppler output after Low-Pass Filter (LPF)-based method and (ii) Spectrogram-based method. Results demonstrate that the proposed VSBM method is effective to detect the heartbeat accurately for each peak detection method. Furthermore, a comparison of the performance of “Spectrogram + VSBM” outperforms the “Doppler output after LPF + VSBM” method by the Root-Mean-Square Error (RMSE) of RRIs.]]>
<![CDATA[Analysis of Electromyography (EMG) Signal Processing with Filtering Techniques ]]>
<![CDATA[Oo, Nandar]]>;
<![CDATA[Aye, Mya Mya]]>;
<![CDATA[Oo, Thandar]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Tun, Hla]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 02 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i02.524
<![CDATA[The paper presents the Analysis of Electromyography (EMG) Signal Processing with Filtering Techniques. The problem in this study is how to consider the filtering techniques for fundamental EMG signal processing with high-level accuracy. The research method for designing the simulation codes for observing the EMG signal modeling and digital filtering techniques with mathematical approaches from the signals and systems concepts. The results confirm that the outcomes of this study met the performance target for noise removal techniques of EMG signals in real-world applications.]]>
<![CDATA[Analysis of Third-Generation Solar Cell Design with Physics of Semiconductor ]]>
<![CDATA[Tin Swe, Hsu Myat]]>;
<![CDATA[Ei Khin, Ei]]>;
<![CDATA[Soe, Khaing Thandar]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 02 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i02.525
<![CDATA[The paper presents the Analysis of Generation Solar Cell Design with Physics of Semiconductor. The research problem in this study is how to design a high-performance solar cell with novel semiconductor compounds that are fabricated in the laboratory based on the physical parameters. The approach to solving the proposed research problem is based on experimental studies through theoretical research in recent works. The first one is to develop the effective structure for solar cell design and the other is to develop the energy band structure of III-V compound-based third-generation solar cell. The simulation analyses were carried out with the help of MATLAB language. There are many steps to designing high-performance semiconductor devices for real-world applications. The results confirm that the numerical analyses of these two developments could be supported to estimate the outcomes of experimental studies without using real equipment in the laboratory. ]]>
<![CDATA[Analysis of Physics of Novel Light-Emitting Diode for Holographic Imaging ]]>
<![CDATA[Wah, Thae Nu]]>;
<![CDATA[Win, Thanda]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Hla Myo Tun]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 02 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i02.566
<![CDATA[The paper focuses on the analysis of the physics of a novel light-emitting diode for holographic imaging. The research problems in this study are based on the specific challenges that were discussed in the introduction. The solution for this research problem is accomplished with two approaches such as (i) device modeling, physics of LEDs, and characteristics of LEDs under the theoretical analysis and (ii) fabrication of LEDs, PL and FTIR measurement, performance check, and performance comparison under the experimental studies. The specific objectives of this research are to advance the LED design for optical transmission in 5G communication systems, to recognize the semiconductor material for LED structure, and to approach theoretical and numerical calculations for LED. In these analyses, there are two main approaches for solving the performance of the novel light-emitting diodes. The first one is to develop the effective structure for light emitting diode and the other is to develop the energy diagram design of III-V and II-VI compound-based LED. The simulation analyses were carried out with the help of MATLAB language. The results confirm that the numerical analyses of these two developments could be supported to estimate the outcomes of experimental studies without using real equipment in the laboratory.]]>
<![CDATA[Transparent Film Profiling and Analysis by White Light Scanning Interferometry ]]>
<![CDATA[Hlaing, Nway Nway]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 03 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i03.569
<![CDATA[This paper describes the use of white light scanning interferometry with a Super luminescent diode (SLD) for thin film surface measurement. The technique provides 3D top surface and thickness profiles of transparent films, as well as detailed properties of multilayer film stacks, including material optical properties. The setup involves splitting a laser beam with a beam splitter, generating interference signals detected by a photodetector, and then converting analog signals to digital using an A/D converter for further analysis with LabView and MATLAB software. In this paper, the theoretical analysis and simulation study of white light scanning interferometry for transparent film measurement is discussed. This approach offers a flexible tool for both engineering and structured surface measurements.]]>
<![CDATA[Development of Novel Solar Cell Design based on Current Energy Converted from Phonon Energy by Controlling the Phonon Transport ]]>
<![CDATA[Tin Swe, Hsu Myat]]>;
<![CDATA[Hla Myo Tun]]>;
<![CDATA[Pradhan, Devasis]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Khin, Ei Ei]]>;
<![CDATA[Soe, Khaing Thandar]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 03 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i03.626
<![CDATA[The paper mainly focuses on the Development of Novel Solar Cell Design based on Current Energy Converted from Phonon Energy by Controlling the Phonon Transport. The research challenges in this study are: to find a means of the control of phonon transport or phonon accumulation and propose a novel solar cell structure to convert the phonon energy to the current energy; to study phonon control method for III-nitrides and the properties of phonon transport; to analyze the phonon absorption in a short time for III-nitrides is higher than gallium arsenide by one order, which makes it possible to extract higher current than previous materials. The research objectives are: to design the novel solar cell structure to convert Phonon Energy to Current Energy; to analyze the physics of solar cell structure with numerical approaches; to model the Quantum Well in the proposed solar cell structure; to set the experimental measurement system for physical characteristics of novel solar cells; to confirm the results from the analysis of Control of Phonon Transport. The conversion of current energy from the phonon energy by controlling the phonon transport depends on the structure of the solar cell stacking system. The implementation of this study was accomplished based on the specific model, especially Quantum Well Structure. The results confirm that the performance specification of targeted solar cell structures in real-world applications.]]>
<![CDATA[Implementation of the Process for Contamination in Electromyography (EMG) Signal by Using Noise Removal Techniques ]]>
<![CDATA[Oo, Nandar]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Pradhan, Devasis]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Aye, Mya Mya]]>;
<![CDATA[Oo, Thandar]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 3 No. 03 (2024): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v3i03.627
<![CDATA[The paper describes the analysis of electromyography (EMG) signals using noise removal techniques. The problem in this study is to consider a noise removal technique for basic EMG signal processing by the Band Pass Filter method. A research approach to designing simulation codes for observing EMG signal modeling and noise removal techniques through mathematical methods from signals and systems concepts. The results confirm that it can provide high-performance target monitoring of the EMG signal in real-world applications.]]>
<![CDATA[Analysis of High-Performance Step-Down DC to DC Converter Design Based on Zero Voltage Switching with Pulse Width Modulation Technique for Electric Vehicles ]]>
<![CDATA[Nyo, Hnin Wint War]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Win, Thanda]]>;
<![CDATA[Khin, Ei Ei]]>;
<![CDATA[Aye, Mya Mya]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 4 No. 01 (2025): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v4i01.775
<![CDATA[The paper mainly focuses on analyzing high-performance step-down DC to DC converter based on zero voltage switching with pulse width modulation technique for electric vehicles. In this paper, PI, fuzzy PI, and adaptive network-based fuzzy inference system (ANFIS)control methods are applied to the phase shift full-bridge (PSFB) zero voltage switching (ZVS) converter for auxiliary components in electric vehicles. The robust analysis of three control methods is compared by using the AC small-signal mathematical model. Traditional PI control uses specific mathematical equations with errors and derivatives. Fuzzy PI control utilizes fuzzy logic rules with linguistic variables such as high, medium, and low. ANFIS combines fuzzy logic and neural networks to capture both benefits. The three control designs' switching losses and load changes are analyzed and implemented with the MATLAB/SIMULINK Software platform. From the simulation results, traditional PI control works with 92% efficiency. Fuzzy PI control and ANFIS work with 93% efficiency at full load capacity.]]>
<![CDATA[Design of Multi-Level Inverter Design for Charging Stations of Electric Vehicles ]]>
<![CDATA[Htay, Aung Kyaw]]>;
<![CDATA[Tun, Hla Myo Tun]]>;
<![CDATA[Pradhan, Devasis]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Khin, Ei Ei]]>;
<![CDATA[Soe, Khaing Thandar]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 2 (2024): July, 2024 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v4i2.136
<![CDATA[The paper mainly focuses on the Design of Multi-Level Inverter Design for Charging Stations of Electric Vehicles. The research challenges in this study are: the lack of technology for higher level design of multilevel inverter systems for electric vehicles (EVs) is facing to solve the high performance and robustness of the system in reality, the control algorithm for maximum power observing is a crucial challenge in the designing and implementing such kind of multilevel inverter design, the pure sine wave inverter approaches with higher number steps could be a candidate for electric vehicles (EVs) in real world applications. That problems could be solved based on the knowledge and idea of power electronic circuits and systems. The implementation of this study was accomplished based on the specific model especially based on the circuit theory and microelectronic devices. The results confirm that the performance specification of targeted multilevel inverter (MLI) in real world applications.]]>
<![CDATA[Analysis on Wideband Channel Model for High Speed Wireless Communication Systems ]]>
<![CDATA[Mon, Myint Myint]]>;
<![CDATA[Tun, Hla Myo]]>;
<![CDATA[Win, Lei Lei Yin]]>;
<![CDATA[Win, Thanda]]>;
<![CDATA[Aye, Mya Mya]]>;
<![CDATA[Soe, Khaing Thandar]]>;
<![CDATA[Pradhan, Devasis]]>
<![CDATA[ Journal of Novel Engineering Science and Technology Vol. 4 No. 01 (2025): Journal of Novel Engineering Science and Technology ]]>
Publisher : <![CDATA[The Indonesian Institute of Science and Technology Research ]]>
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DOI: 10.56741/jnest.v4i01.803
<![CDATA[The paper emphasizes on the analysis on wideband channel model for high speed wireless communication systems. The research problem in this study are based on the following concepts such as (i) Firstly, it is necessary to change to the appropriate physical devices that can support 5G system, (ii) It is required to design a channel that will adapt to the medium that will be convenient for the changed physical devices, and (iii) Mobile terminals that currently use 4G cannot be used in 5G system. The objectives in this study are - to analyze the existing channel model for mobile communication, to analyze the mathematical and dynamical model for wireless propagation channel, to implement the wireless propagation channel with specific purposes, to implement the optimized channel model performance, and to evaluate the performance of the developed channel design. The numerical analyses in this study are conducted by using MATLAB language. The research direction in this study are based on the channel system functions, and tapped delay-line models. The simulation results are confirmed that the 12 taps in this study for the high speed wireless communication system design.]]>
