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International Conference on Engineering and Emerging Technologies (ICEET)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C. National Yunlin University of Science and Technology Taiwan R.O.C.

ISBN: (纸本)9781665427159

The embedded platform of vehicle introduced as edge computing vision and deep learning for advanced driver assistance systems (ADAS). The proposed phase locked loop design of millimeter wave receiver consists of phase frequency detector with charge pump, loop filter and injection locked frequency divider for radar detection. In terms of receiving data, this article uses the array headlamp module as the optical fusion, the millimeter wave receiver module as the distance experiments source, and then compile C++ with NVIDIA Jetson Nano for image lane analysis, while MobileNet uses the Yolov3-tiny algorithm for image object detection.

关键词： Optical filters Integrated optics Laser radar Radar detection Optical imaging Optical receivers Optical pumping

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Millimeter Wave Receiver Of Radar And Lidar Detection With Deep Neural Network For Edge Electromobility

Millimeter Wave Receiver Of Radar And Lidar Detection With D...

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International Microsystems, Packaging, Assembly and Circuits Technology (IMPACT)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C. National Yunlin University of Science and Technology Taiwan R.O.C.

ISBN: (纸本)9781665431927

This article proposed integrated millimeter wave receiver with hybrid beamforming of radar detection with deep learning, high performance, and low power dissipation. The microsystem also designs lidar detection to upgrade accuracy on embedded electromobility. The traditional pedestrian detection system (PDS) on embedded platform introduced as edge computing vision for advanced driver assistance systems (ADAS). The millimeter wave receiver promoted to reduce image computation with featured object and enhance throughput with parallel processing on deep convolutional layers of ARM Neon to comparison with produce MobileNet and training of others neural network.

关键词： Micromechanical devices Deep learning Training Laser radar Neural networks Radar detection Receivers

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A Continuous-Time Quadrature Bandpass Sigma-Delta Modulator with Capacitive Feedforward Chip Design for Phase Locked Loop Controllers

A Continuous-Time Quadrature Bandpass Sigma-Delta Modulator ...

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International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C National Yunlin University of Science and Technology Taiwan R.O.C

ISBN: (纸本)9781665449670

A continuous-time quadrature bandpass sigma-delta (ΣΔ) modulator consisting of a chain of integrators with weighted capacitive feedforward summation (CICFF) topology is presented for LTE-A wireless controllers. The main advantage of the proposed modulator adopts the weighted capacitor technology to save a feedforward summation amplifier, hence reduces power consumption from QVCO. The phase locked loop was implemented in tsmc 0.18 μm CMOS process. With 1.8 V supply voltage and 160 M-samples/s and - 1.0 dBm 1 MHz sinusoid, measured results have achieved a dynamic range of 56 dB, a peak SNDR of 52.8 dB, a SFDR of 59 dB, an ENOB of 8.49-bit over 2.5 MHz signal bandwidth and a power dissipation of 18.5 mW. Including pads, the chip area is 1.3×1.5 mm 2 .

关键词： Wireless communication Sigma-delta modulation Voltage measurement Power demand Phase modulation Modulation Dynamic range

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A Machine Learning Algorithm to Automate Vehicle Classification and License Plate Detection

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Wireless Communications and Mobile Computing 2022年第0期2022卷

作者： Srividhya, S.R. Kavitha, C. Lai, Wen-Cheng Mani, Vinodhini Khalaf, Osamah Ibrahim Department Of Computer Science And Engineering Sathyabama Institute Of Science And Technology Chennai India Bachelor Program In Industrial Projects National Yunlin University Of Science And Technology Douliu640301 Taiwan Department Electronic Engineering National Yunlin University Of Science And Technology Douliu640301 Taiwan Al-Nahrain University Al-Nahrain Nanorenewable Energy Research Center Baghdad Iraq

In the field of intelligent transportation systems (ITS), video surveillance is a hot research topic;this surveillance is used in a variety of applications, such as detecting the cause of an accident, tracking down a specific vehicle, and discovering routes between major locations. Object detection and shadow elimination are the main tasks in this area. Object detection in computer vision is a critical and vital part of object and scene recognition, and its applications are vast in the fields of surveillance and artificial intelligence. Additionally, other challenges arise in regard to video surveillance, including the recognition of text. Based on shadow elevation, we present in this work an inner-outer outline profile (IOOPL) algorithm for detecting the three levels of object boundaries. A system of video surveillance monitoring of traffic can be incorporated into this method. It is essential to identify the type of detected objects in intelligent transportation systems (ITS) to track safely and estimate traffic parameters correctly. This work addresses the problem of not recognizing object shadows as part of the object itself in-vehicle image segmentation. This paper proposes an approach for detecting and segmenting vehicles by eliminating their shadow counterparts using the delta learning algorithm (Widrow-Hoff learning rule), where the system is trained with various types of vehicles according to their appearance, colors, and build types. An essential aspect of the intelligent transportation system is recognizing the type of the detected object so that it can be tracked reliably and the traffic parameters can be estimated correctly. Furthermore, we propose to classify vehicles using a machine learning algorithm consisting of artificial neural networks trained using the delta learning algorithm, a high-performance machine learning algorithm, to obtain information regarding their travels. The paper also presents a method for recognizing the number plate using tex

关键词： Object detection

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Antibacterial and Photocatalytic Dye Degradation Activities of Green Synthesized NiSe Nanoparticles from Hibiscus rosa-sinensis Leaf Extract

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Water (Switzerland) 2023年第7期15卷 1380页

作者： Velayutham, Lakshmi Parvathiraja, C. Anitha, Dhivya Christo Mahalakshmi, K. Jenila, Mary Gupta, Jeetendra Kumar Wabaidur, Saikh Mohammad Siddiqui, Masoom Raza Aftab, Sikandar Lai, Wen-Cheng Palayamkottai Manonmaniam Sundaranar University Tamilnadu Tirunelveli627012 India Department of Physics Manonmaniam Sundaranar University Tamilnadu Tirunelveli627012 India Chemistry Department College of Science King Saud University Riyadh11451 Saudi Arabia Department of Intelligent Mechatronics Engineering Sejong University 209 Neungdong-ro Gwangjin-gu Seoul05006 Korea Republic of Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Douliu640301 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Douliu640301 Taiwan

Ecosystems worldwide face a serious and life-threatening water crisis due to water contamination. Nanotechnology offers a promising solution to this issue by providing methods for removing pollutants from aquatic sources. In this study, we utilized a green and simple approach to biosynthesize NiSe NPs using Hibiscus rosa-sinensis extract as the bio-source. The plant extract acts as a reducing, stabilizing, and capping agent in the synthesis process. A simple hydrothermal method was employed to blend the NiSe NPs photocatalysts. UV-Visible DRS spectroscopy was utilized to confirm the reduction in and stabilization of Ni2+ and Se2− ions. The resulting NiSe NPs have a bandgap of 1.74 eV, which facilitates electron and hole production on their surfaces. To characterize the functional groups on the NiSe NPs and their surface interactions with bio-compounds, FTIR spectroscopy was utilized. XRD analysis revealed the crystallite size of the NiSe NPs to be 24 nm, while FE-SEM and TEM imaging showed their spherical shape and material distribution. EDX spectroscopy confirmed the integrity of the NiSe NPs’ material. XPS analysis provided information on the chemical composition, nickel and selenium valency, and their interface. The efficacy of the NiSe NPs as a blended photocatalyst in photodegrading Methylene Blue (MB) dye was tested under visible light, resulting in 92% degradation. Furthermore, the NiSe NPs exhibited bactericidal activity against Escherichia coli and Staphylococcus aureus bacteria due to their advanced oxidation and reduction in charge particles, which increased the degradation efficiency and suppressed cell proliferation. Based on the obtained findings, the NiSe NPs show promise as a powerful agent for water remediation and microbial resistance. © 2023 by the authors.

关键词： Degradation

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Chip Sigma-Delta Modulator with Frequency Synthesizers for Phase-Locked Loop Control

Chip Sigma-Delta Modulator with Frequency Synthesizers for P...

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International Conference on Computing, Communication & Automation (ICCCA)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin Univ. of Science and Technology Taiwan R. O. C. National Yunlin Univ. of Science and Technology Taiwan R. O. C.

ISBN: (纸本)9781665447539

The article presents phase - locked loop consists of frequency synthesizers and multi-bands low-pass continuous-time $\Sigma-\Delta$ modulators. The promoted sigma - delta $(\Sigma-\Delta)$ modulators with cascaded integrator and frequency synthesizers are presented for phase locked loop controller. The promoted integration of phase - locked loop was implemented in tsmc 0.18 μm CMOS process. Experimental has achieved the SNDR of 42/ 33 dB over half MHz, phase noise of voltage-controlled oscillator (VCO) produces -120.08 dBc/Hz at 1MHz offset, and phase noise of PLL produces - 113.2 dBc/Hz at 1MHz offset, respectively. This dual-bands phase-locked loop (PLL) are carefully integrated for low dissipation sensor control applications.

关键词： Phase noise Frequency synthesizers Sigma-delta modulation Frequency modulation Phase measurement Phase modulation Voltage-controlled oscillators

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Mixing Wake-up Receiver of Low Noise Amplifier with Back-gated QVCO

Mixing Wake-up Receiver of Low Noise Amplifier with Back-gat...

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Electrical, Computer and Energy Technologies (ICECET), International Conference on

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin Univ. of Science and Technology Taiwan R. O. C. National Yunlin Univ. of Science and Technology Taiwan R. O. C.

ISBN: (纸本)9781665442329

This article presents mixing receiver of the low noise amplifier with back-gated QVCO using double balance mixer with doublers to merge low noise amplifier and LC-resonator quadrature voltage-controlled oscillator (QVCO) form balun circuit. The proposed QVCO can degrade NMOS subthreshold voltage. The proposed double balance mixer with doublers describes broadband integrated design, operation principle and experimental of the mixing receiver from low noise amplifier (LNA) and QVCO with balun circuit. The proposed QVCO circuit is composed of an LC resonator (C is a parasitic capacitor), NMOS cross-coupled, back gate resister, bias resistor, and DC block of capacitors. The mixing receiver implemented in tsmc CMOS process can be used in wireless radio frequency communication systems.

关键词： Wireless communication Resistors Low-noise amplifiers Baluns Voltage-controlled oscillators Capacitors Receivers

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Bandpass Continuous-time Sigma-delta Modulators for PLL Chip Design in Wireless Charging Module

Bandpass Continuous-time Sigma-delta Modulators for PLL Chip...

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International Future Energy Electronics Conference (IFEEC)

作者： Wen-Cheng Lai Wen Liu Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C. National Yunlin University of Science and Technology Taiwan R.O.C. School of Advanced Technology Xi’an Jiaotong-Liverpool University Suzhou China

ISBN: (纸本)9781665434492

This article employing PLL frequency synthesis to consist of continuous-time (CT) sigma-delta ($\Sigma \Delta$) modulator, voltage-controlled oscillator with divider and bandpass filter with phase detector is presented and implemented in tsmc 0.18 um CMOS technology. The phase lock loop (PLL) is proposed to lock the phase discrepancy among the wireless charging transmitting current and receiving voltage, at which report the module achieves excellence efficiency from RF wireless analog transmitter and receiver.

关键词： Wireless communication Radio frequency Sigma-delta modulation Transmitters Inductive charging Receivers Detectors

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Neural Network Architecture Based on Wavelet Transform for Electro-mobility Detection

Neural Network Architecture Based on Wavelet Transform for E...

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IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Ching-Lung Su Wen-Cheng Lai Jun-Yao Zhong National Yunlin University of Science and Technology Taiwan R. O.C. Research and Implementation Center of Intelligent Electronic Product National Yunlin Univ. of Science and Technology Taiwan R. O. C. Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R. O. C.

This article discusses the development of a neural network model for long-distance objects and a small-scale of computing. The proposed architecture of wavelet object detection is based on merge other frequency domains of the image into reference. The Experiments is applied for long-distance scenes to provide higher accuracy assume as lower computational complexity. Feasibility of the proposed wavelet neural networks has been evaluated and verified on vehicle detection. The architecture of wavelet object detection promoted low latency and high frame per second (fps) to porting on the NVIDIA JETSON AGX XAVIER evaluation board for artificial intelligence applications.

关键词： Wavelet transforms Wavelet domain Vehicle detection Frequency-domain analysis Conferences Neural networks Computer architecture

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Green Synthesis and Characterizations of Cobalt Oxide Nanoparticles and Their Coherent Photocatalytic and Antibacterial Investigations

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Water (Switzerland) 2023年第5期15卷 910页

作者： Chelliah, Parvathiraja Wabaidur, Saikh Mohammad Sharma, Hari Prapan Jweeg, Muhsin J. Majdi, Hasan Sh. AL. Kubaisy, Munthir Mohammed Radhy Iqbal, Amjad Lai, Wen-Cheng Department of Physics Manonmaniam Sundaranar University Tamilnadu Tirunelveli627012 India Department of Chemistry College of Science King Saud University P.O. Box-2455 Riyadh11451 Saudi Arabia Department of Business Management GLA University Uttar Pradesh Mathura281406 India College of Technical Engineering Al-Farahidi University Baghdad10070 Iraq Department of Chemical Engineering and Petroleum Industries Al-Mustaqbal University College Babylon51001 Iraq Department of Medical Physics The University of Mashreq Baghdad10001 Iraq Department of Materials Technologies Silesian University of Technology Gliwice44-100 Poland Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Douliu640301 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Douliu640301 Taiwan

Water pollution is a serious concern for developing and undeveloped countries. Photocatalytic degradation of organic pollutants is an effective degradation method to restrain the green ecosystem. This research article presents a green, low-cost, and benevolent eco-friendly biosynthesis of cobalt oxide (Co3O4) nanoparticles using Curcuma longa plant extract. The UV and visible region absorbance of Co3O4 nanoparticles estimated the Co2+ and Co3+ transitions on the lattice oxygen, and their bandgap of 2.2 eV was confirmed from the UV-DRS spectroscopy. The cubic structure and spherical shape of Co3O4 nanoparticles were estimated by using XRD and TEM characterizations. Plant molecules aggregation and their agglomerations on the nanoparticles were established from FTIR and EDX spectroscopy. Multiple cobalt valences on the oxygen surfaces and their reaction, bonding, and binding energies were analyzed from XPS measurements. The biogenic Co3O4 nanoparticles were executed against gram-positive (Staphylococcus aureus—S. aureus) and gram-negative (Escherichia coli—E. coli) bacteria. A gram-positive bacterial strain exhibited great resistivity on Co3O4 nanoparticles. Degradation of organic dye pollutants on the Co3O4 nanoparticles was performed against methylene blue (MB) dye under the conditions of visible light irradiation. Dye degradation efficiency pseudo-first-order kinetics on the pseudo-first-order kinetics denotes the rate of degradation over the MB dye. This research work achieved enhanced degradation potency against toxic organic dye and their radicals are excited from visible light irradiations. Absorption light and charged particle recombinations are reformed and provoked by the plant extract bio-molecules. In this process, there is no inferior yield development, and electrons are robustly stimulated. Furthermore, the biosynthesized Co3O4 nanoparticles determined the potency of bacterial susceptibility and catalytic efficacy over the industrial dye pollutants. © 202

关键词： Fourier transform infrared spectroscopy

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