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Performance Comparison Study of Cherry Tomato Ripeness Detection Using Multiple YOLO Models

Journal of Institute of Control, Robotics and systems 2024年第11期30卷 1214-1220页

作者： Yang, Dayeon Son, Hyoung Il Ju, Chanyoung Department of Convergence Biosystems Engineering Chonnam National University Korea Republic of Interdisciplinary Program in IT-Bio Convergence System Chonnam National University Korea Republic of Research Center for Biological Cybernetics Chonnam National University Korea Republic of Purpose Built Mobility Group Korea Institute of Industrial Technology Korea Republic of

Millions of tons of cherry tomatoes are produced annually, with the harvesting process being crucial. This paper presents a deep learning-based approach to distinguish the ripeness of cherry tomatoes during the harvesting process. It specifically analyzes the performance of the YOLO (You Only Look Once)v5 and YOLOv8 models, which are designed to rapidly detect the ripeness of cherry tomatoes in real time. The proposed system is expected to resolve rural issues caused by population decline and enhance productivity in cherry tomato harvesting environments. Future research will aim to apply this technology to harvesting robots for the automatic recognition and harvesting of cherry tomatoes. © 2024, Institute of Control, Robotics and systems. All rights reserved.

关键词： Fruits

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The development of a general purpose embedded board for driving the mobile robot supporting various communication and various sensors 26

The development of a general purpose embedded board for driv...

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26th International Conference on Electrical Machines and systems, ICEMS 2023

作者： Kim, Jisu Ahn, Minsung Han, Jeakweon Hanyang University ERICA The Department of Interdisciplinary Robot Engineering Systems Ansan15588 Korea Republic of University of California The Department of Mechanical and Aerospace Engineering Los AngelesCA90095 United States Hanyang University ERICA Department of Robotics Ansan15588 Korea Republic of

ISBN: (纸本)9798350317589

The development of a mobile robot entails the utilization of diverse components such as motors, sensors, controllers, and communication systems. Integrating all these components can be a time-consuming and labor-intensive task. Typically, robot engineers need to search for motor drivers, sensors, and controllers individually and integrate them to develop a mobile robot. However, most motor drivers on the market are not specifically designed for mobile robots, and other platforms are not specialized for this purpose either. Therefore, this paper aims to facilitate the development of mobile robots by providing a general-purpose embedded board that supports various communication and sensor systems. © 2023 IEEE.

关键词： Mobile robots

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Modified Sliding Model Control for Resilient Speed Control of Wind Energy systems

Modified Sliding Model Control for Resilient Speed Control o...

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2024 IEEE/PES Transmission and Distribution Conference and Exposition, T and D 2024

作者： Abu-Askar, Abdulrahman Khan, Khalid Abdullah Khalid, Muhammad Sustainable Innovations Company Limited Al-Khobar34627 Saudi Arabia Electrical Engineering Department Dhahran Saudi Arabia KFUPM Interdisciplinary Research Center for Renewable Energy and Power Systems Dhahran Saudi Arabia

ISBN: (纸本)9798350316377

This research presents an improved control approach for wind turbine system using an observer-based sliding model control (SMC) approach with an extended state observer (ESO) to estimate and compensate for the system disturbances. The effectiveness of the proposed ESO-enhanced SMC controller is demonstrated through simulation using Python. The simulation results shows that the ESO-enhanced SMC controller outperforms the classic SMC controller in terms of control effort and disturbance rejection, in addition to minimizing high frequency switching of the controller output and minimizing chattering of the system states. The proposed controller provides a practical and efficient solution for regulating wind turbines in variable wind condition, while reducing the wear and tear of the system components. The controller's design and performance evaluation can be extended to other applications with similar nonlinear dynamics and disturbances. © 2024 IEEE.

关键词： Controllers

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Long-range enhancement for fluorescence and Raman spectroscopy using Ag nanoislands protected with column-structured silica overlayer

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Light(Science & Applications) 2024年第12期13卷 3158-3170页

作者： Takeo Minamikawa Reiko Sakaguchi Yoshinori Harada Hiroki Tanioka Sota Inoue Hideharu Hase Yasuo Mori Tetsuro Takamatsu Yu Yamasaki Yukihiro Morimoto Masahiro Kawasaki Mitsuo Kawasaki Department of Systems Innovation Graduate School of Engineering ScienceOsaka UniversityOsaka 560-8531Japan Division of Interdisciplinary Researches for Medicine and Photonics Institute of Post-LED PhotonicsTokushima UniversityTokushima 770-8506Japan Department of Pathology and Cell Regulation Graduate School of Medical ScienceKyoto Prefectural University of MedicineKyoto 602-8566Japan PRESTO Japan Science and Technology Agency(JST)Tokushima 770-8506Japan Institute for Integrated Cell-Material Sciences(iCeMS) Kyoto UniversityKyoto 606-8501Japan Department of Synthetic Chemistry and Biological Chemistry Graduate School of EngineeringKyoto UniversityKyoto 615-8510Japan Department of Medical Photonics Graduate School of Medical ScienceKyoto Prefectural University of MedicineKyoto 602-8566Japan Technology and Engineering Division Ushio Inc.Hyogo 671-0224Japan The Institute of Science and Industrial Research Osaka UniversityOsaka 567-0047Japan Department of Molecular Engineering Graduate School of EngineeringKyoto UniversityKyoto 615-8510Japan

We demonstrate long-range enhancement of fluorescence and Raman scattering using a dense random array of Ag nanoislands(AgNIs)coated with column-structured silica(CSS)overlayer of over 100 nm thickness,namely,remote plasmonic-like enhancement(RPE).The CSS layer provides physical and chemical protection,reducing the impact between analyte molecules and metal *** plates are fabricated with high productivity using sputtering and chemical immersion in gold(I)/halide *** RPE plate significantly enhances Raman scattering and fluorescence,even without proximity between analyte molecules and metal *** maximum enhancement factors are 10^(7)-fold for Raman scattering and 102-fold for *** is successfully applied to enhance fluorescence biosensing of intracellular signalling dynamics in HeLa cells and Raman histological imaging of oesophagus *** findings present an interesting deviation from the conventional near-field enhancement theory,as they cannot be readily explained within its ***,based on the phenomenological aspects we have demonstrated,the observed enhancement is likely associated with the remote resonant coupling between the localised surface plasmon of AgNIs and the molecular transition dipole of the analyte,facilitated through the CSS *** further investigation is warranted to fully understand the underlying mechanisms,the RPE plate offers practical advantages,such as high productivity and biocompatibility,making it a valuable tool for biosensing and biomolecular analysis in chemistry,biology,and *** anticipate that RPE will advance as a versatile analytical tool for enhanced biosensing using Raman and fluorescence analysis in various biological contexts.

关键词： structure silica protected

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Effect of chemical composition and microstructure on the thermal conductivity of Mg-Al-Ca alloys

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Keikinzoku/Journal of Japan Institute of Light Metals 2024年第1期74卷 9-13页

作者： Kirimoto, Yuichi Kondo, Natsuki Ito, Mizuki Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Department of Nano and Functional Material Science Graduate School of Science and Engineering for Education University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan School of Sustainable Design Materials and Engineering University of Toyama Toyama-shi Toyama Japan Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama Toyama-shi Toyama Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama-shi Toyama Japan CHUETSU METAL WORKS CO. LTD. Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Kawaguchi-shi Saitama Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu-shi Toyama Japan

In recent years, the increasing demand for electric vehicles, digital devices such as PCs and smartphones, and renewable energy storage systems has created a need for higher-performance batteries. Accordingly, the thermal conductivity of the case that houses the battery is becoming increasingly important. In this study, compositions with high thermal conductivity and good castability were investigated, focusing on Mg-Al-Ca alloys, and the relationship between the two was examined through thermal conductivity measurements and microstructural observations. As a result, the Mg-6%Al-4%Ca alloy was optimal in terms of castability and thermal conductivity. It was confirmed that a lower Al solid solution capacity and a higher purity of the matrix phase are important to improve the thermal conductivity. It is also suggested that the second phase, platelet Al2Ca, is likely to be recognized and enriched in the matrix, contributing to the improvement of thermal conductivity. The amount of Ca solid solution in the matrix was suggested to be reduced by the enrichment of Al in the matrix. The Ca solid solution in the matrix was found to be less effective in reducing thermal conductivity than the Al solid solution. © 2024 The Japan Institute of Light Metals.

关键词： Magnesium alloys

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All-optical tunable integrator based on microring resonator assisted by GST superlattice 2

All-optical tunable integrator based on microring resonator ...

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2nd International Conference on Optical Communication and Optical Information Processing, OCOIP 2024

作者： Zhong, Wentao Dong, Yida Shen, Mei Lei, Lei Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen518060 China China College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Academy for Advanced Interdisciplinary Studies Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen518000 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

This paper presents the design and simulation analysis of a tunable optical integrator based on ZnS-SiO2/Ge2Sb2Te5 superlattice (GST-SL) phase change material (PCM). The transfer function of the integrator is realized through a silicon microring resonator cladded with a three-layer GST-SL (GST-SL3-MRR). The integration of the PCM into the microring resonator enables a reconfigurable Q-factor, allowing for tunable integration orders between 0.5th and 1st. Through laser-induced phase transitions between amorphous and crystalline states, the transmission spectrum of the MRR can be dynamically adjusted. Simulation results show that the integration time window reaches 300 ps for the first-order integration, and the tunable integration results closely align with the ideal mathematical predictions. demonstrating the device's highly tunable performance. Further simulations of applications for quickly solving ordinary differential equations highlight the potential applications of our device in areas such as optical signal processing and image recognition. © 2025 SPIE.

关键词： Zinc Selenide

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A Novel Layered Double Hydroxide and Dodecyl Alcohol Assisted PCM Composite with High Latent Heat Storage Capacity and Thermal Conductivity

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Journal of Thermal Science 2024年第2期33卷 537-547页

作者： AL-AHMED Amir SARI Ahmet KHAN Firoz AL-RASHEIDI Masoud Hekimoğlu Gökhan AFZAAL Mohammad A.ALSULAMI Ahmed DAFALLA Hatim SALHI Billel A.ALSULAIMAN Fahad Interdisciplinary Research Center for Renewable Energy and Power Systems(IRC-REPS) King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Metallurgical and Material Engineering Karadeniz Technical UniversityTrabzon61080Turkey Maths and Natural Sciences Division Higher Colleges of TechnologyP.O.Box 7947SharjahUnited Arab Emirates Department of Mechanical Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Core Research Facilities King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Interdisciplinary Research Center for Membranes and Water Security King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia

Dodecyl alcohol(DDA) is a promising solid-liquid phase change material(PCM) due to its favorable latent heat storage(LHS) ***,the leakage issue of PCM in a melted state during the heating period and low thermal conductivity restricts its utilization potential in thermal energy storage(TES) *** the same context,the present work aims to overcome the leakage issue and improve the thermal conductivity of the *** this in mind,a novel leak-proof layered double hydroxide(LDH)/DDA composite PCM is proposed through a solution-based impregnation *** leak-proof impregnation ratio of the DDA impregnated within the cavities of the synthesized Al/Fe-LDH was determined to be 60%.Detailed morphological,physicochemical,and thermal properties of the fabricated composite were studied by scanning electron microscopy(SEM),Fourier transforms infrared(FTIR) spectroscopy,X-ray diffraction(XRD)spectroscopy,differential scanning calorimetry(DSC),thermalgravimetric analysis(TGA),and thermal cycling *** results show that the LDH/DDA composite has a suitable phase change temperature(about 20℃) for passive solar thermal management of building *** composite PCM showed high LHS enthalpy(about136 J/g),good thermal stability,and cycling LHS *** also showed nearly 152% higher thermal conductivity compared to that of pure DDA,ultimately reducing the melting and solidification time of the pure DDA by 44.9% and 45.5%,respectively.

关键词： dodecyl alcohol layered double hydroxide composite PCM thermal conductivity thermal energy storage(TES)

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Reconfigurable optical matrix operations based on GST superlattice microring array 2

Reconfigurable optical matrix operations based on GST superl...

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2nd International Conference on Optical Communication and Optical Information Processing, OCOIP 2024

作者： Pang, Zhizhong Dong, Yida Shen, Mei Ge, Yanqi Lei, Lei Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen518060 China China College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Academy for Advanced Interdisciplinary Studies Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen518000 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

This paper presents a reconfigurable matrix operations for optical digital computing using microring resonator (MMR) array assisted by ZnS-SiO2/Ge2Sb2Te5 superlattice (GST-SL) phase-change material (PCM). By overlaying the GST-SL onto the MMR array, the resonant state of each MMR element can be adjusted according to the assigned matrix weights, thereby modifying the optical matrix transfer function to yield specific logical operations. This device combines both nonlinear and linear operations to achieve the building blocks, including logic minterms and maxterms, for complex logic functions. Based on the basic logic units, combinational logic functions such as full addition and full subtraction have been numerically demonstrated. Our nanostructure reduces computational complexity and provides a basis for future array expansion, offering a promising new approach for integrated optical computing and optical signal processing. © 2025 SPIE.

关键词： Optical signal processing

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Phasor-FSTM:a new paradigm for multicolor super-resolution imaging of living cells based on fluorescence modulation and lifetime multiplexing

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Light(Science & Applications) 2025年第1期14卷 258-270页

作者： Luwei Wang Yue Chen Jiaqing Guo Xiaoyu Weng Wei Yan Jun Song Tong Ye Junle Qu Center for Biomedical Optics and Photonics&College of Physics and Optoelectronic Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhen518060China The Photonics Center of Shenzhen University Shenzhen UniversityShenzhen518060China Department of Bioengineering CU-MUSC Bioengineering ProgramClemson UniversityCharlestonSouth Carolina29634USA

Multicolor microscopy and super-resolution optical microscopy are two widely used techniques that greatly enhance the ability to distinguish and resolve structures in cellular *** methods have individually transformed cellular imaging by allowing detailed visualization of cellular and subcellular structures,as well as organelle ***,integrating multicolor and super-resolution microscopy into a single method remains challenging due to issues like spectral overlap,crosstalk,photobleaching,phototoxicity,and technical *** challenges arise from the conflicting requirements of using different fluorophores for multicolor labeling and fluorophores with specific properties for super-resolution *** propose a novel multicolor super-resolution imaging method called phasor-based fluorescence spatiotemporal modulation(Phasor-FSTM).This method uses time-resolved detection to acquire spatiotemporal data from encoded photons,employs phasor analysis to simultaneously separate multiple components,and applies fluorescence modulation to create super-resolution ***-FSTM enables the identification of multiple structural components with greater spatial accuracy on an enhanced laser scanning confocal microscope using a single-wavelength *** demonstrate the capabilities of Phasor-FSTM,we performed two-color to four-color super-resolution imaging at a resolution of~λ/5 and observed the interactions of organelles in live cells during continuous imaging for a duration of over 20 *** method stands out for its simplicity and adaptability,seamlessly fitting into existing laser scanning microscopes without requiring multiple laser lines for excitation,which also provides a new avenue for other super-resolution imaging technologies based on different principles to build multi-color imaging systems with the requirement of a lower budget.

关键词： resolution lifetime simplicity

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Suppressing Anodic Degradation of Lithium-Ion Batteries by Sinusoidal Waveform Charging Method

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IEEE Access 2024年 12卷 59996-60003页

作者： Sangeetha, Thangavel Mon-Yan, Wei Wu, Yi-Shiuan Yang, Chun-Chen Chen, Po-Tuan Yang, Cheng-Jung National Taipei University of Technology Research Center of Energy Conservation for New Generation of Residential Commercial and Industrial Sectors Department of Energy and Refrigerating Air-Conditioning Engineering Taipei10608 Taiwan Ming Chi University of Technology Battery Research Center of Green Energy New Taipei City24301 Taiwan National Taipei University of Technology Department of Vehicle Engineering Taipei10608 Taiwan National Sun Yat-Sen University Program in Interdisciplinary Studies Kaohsiung80424 Taiwan

The effects of Constant current- Constant voltage charging and combined sinusoidal waveform charging methods on the internal structure of LiFePO4 battery have been discussed in detail in this study. Experimental results clearly indicated that after 600 cycles, the battery that utilized the charging method had retained about 94% of state of health. In the electrochemical impedance analysis and cyclic voltammetry tests, the portion of the SEI film impedance was increased about 0.08 text{m}Omega . In the micro structured view, no significant SEI film formation was observed on the surface of the negative electrode that used the battery in the present charging method. Finally, in the analysis of the SEI film composition, it was found that the Li2CO3 and Li2O content in the Li element was only about 15.97% and 4.42% in the battery employing this charging method, and the battery component contents in the CC-CV charging method were 27.2% and 6.69% respectively. © 2013 IEEE.

关键词： Electrolytes

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