Sensors, Vol. 24, Pages 2764: Deep Learning Models to Reduce Stray Light in TJ-II Thomson Scattering Diagnostic
Jesus Vega
Nuclear fusion is a potential source of energy that could supply the growing needs of the world population for millions of years. Several experimental thermonuclear fusion devices try to understand and control the nuclear fusion process. A very interesting diagnostic called Thomson scattering (TS) is performed in the Spanish fusion device TJ-II. This diagnostic takes images to measure the temperature and density profiles of the plasma, which is heated to very high temperatures to produce fusion plasma. Each image captures spectra of laser light scattered by the plasma under different conditions. Unfortunatel...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Ricardo Correa Gonzalo Farias Ernesto Fabregas Sebasti án Dormido-Canto Ignacio Pastor Jesus Vega Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2765: Developing a Novel Prosthetic Hand with Wireless Wearable Sensor Technology Based on User Perspectives: A Pilot Study
Hirotaka Mutsuzaki
Myoelectric hands are beneficial tools in the daily activities of people with upper-limb deficiencies. Because traditional myoelectric hands rely on detecting muscle activity in residual limbs, they are not suitable for individuals with short stumps or paralyzed limbs. Therefore, we developed a novel electric prosthetic hand that functions without myoelectricity, utilizing wearable wireless sensor technology for control. As a preliminary evaluation, our prototype hand with wireless button sensors was compared with a conventional myoelectric hand (Ottobock). Ten healthy therapists were enrolled in th...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Yukiyo Shimizu Takahiko Mori Kenichi Yoshikawa Daisuke Katane Hiroyuki Torishima Yuki Hara Arito Yozu Masashi Yamazaki Yasushi Hada Hirotaka Mutsuzaki Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2766: Optical Camera Communications in Healthcare: A Wearable LED Transmitter Evaluation during Indoor Physical Exercise
z-Jimenez
This paper presents an experimental evaluation of a wearable light-emitting diode (LED) transmitter in an optical camera communications (OCC) system. The evaluation is conducted under conditions of controlled user movement during indoor physical exercise, encompassing both mild and intense exercise scenarios. We introduce an image processing algorithm designed to identify a template signal transmitted by the LED and detected within the image. To enhance this process, we utilize the dynamics of controlled exercise-induced motion to limit the tracking process to a smaller region within the image. We demonstrate...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Eleni Niarchou Vicente Matus Jose Rabadan Victor Guerra Rafael Perez-Jimenez Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2767: An Online Monitoring System for In Situ and Real-Time Analyzing of Inclusions within the Molten Metal
incan Zheng
Traditional methods for assessing the cleanliness of liquid metal are characterized by prolonged detection times, delays, and susceptibility to variations in sampling conditions. To address these limitations, an online cleanliness-analyzing system grounded in the method of the electrical sensing zone has been developed. This system facilitates real-time, in situ, and quantitative analysis of inclusion size and amount in liquid metal. Comprising pneumatic, embedded, and host computer modules, the system supports the continuous, online evaluation of metal cleanliness across various metallurgical processes in ...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Yunfei Wu Hao Yan Jiahao Wang Xianzhao Na Xiaodong Wang Jincan Zheng Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2768: HALNet: Partial Point Cloud Registration Based on Hybrid Attention and Deep Local Features
Zhang
Point cloud registration is an important task in computer vision and robotics which is widely used in 3D reconstruction, target recognition, and other fields. At present, many registration methods based on deep learning have better registration accuracy in complete point cloud registration, but partial registration accuracy is poor. Therefore, a partial point cloud registration network, HALNet, is proposed. Firstly, a feature extraction network consisting mainly of adaptive graph convolution (AGConv), two-dimensional convolution, and convolution block attention (CBAM) is used to learn the features of the initial ...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Deling Wang Huadan Hao Jinsong Zhang Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2770: Transient Interference Excision and Spectrum Reconstruction with Partial Samples Using Modified Alternating Direction Method of Multipliers-Net for the Over-the-Horizon Radar
This article proposes a modified Alternating Direction Method of Multipliers (ADMM)-Net to reconstruct the target and clutter spectrum of sparse OTHR signals so that target detection can be performed normally. Firstly, transient interferences are identified based on the sparse basis representation and then excised. Therefore, the processed signal can be seen as a sparse OTHR signal. By solving the Doppler sparsity-constrained optimization with the trained network, the complete Doppler spectrum is reconstructed effectively for target detection. Compared with traditional sparse solution methods, the presented approach can ba...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Zhang Man Quan Huang Jia Duan Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2769: Design, Construction, and Validation of an Experimental Electric Vehicle with Trajectory Tracking
mez
This research presents an experimental electric vehicle developed at the Tecnológico Nacional de México Celaya campus. It was decided to use a golf cart-type gasoline vehicle as a starting point. Initially, the body was removed, and the vehicle was electrified, meaning its engine was replaced with an electric one. Subsequently, sensors used to measure the vehicle states were placed, calibrated, and instrumented. Additionally, a mathematical model was developed along with a strategy for the parametric identification of this model. A communication scheme was implemented consisting of fou...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Joel Artemio Morales Viscaya Alejandro Israel Barranco Guti érrez Gilberto Gonz ález Gómez Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2771: USV Trajectory Tracking Control Based on Receding Horizon Reinforcement Learning
We present a novel approach for achieving high-precision trajectory tracking control in an unmanned surface vehicle (USV) through utilization of receding horizon reinforcement learning (RHRL). The control architecture for the USV involves a composite of feedforward and feedback components. The feedforward control component is derived directly from the curvature of the reference path and the dynamic model. Feedback control is acquired through application of the RHRL algorithm, effectively addressing the problem of achieving optimal tracking control. The methodology introduced in this paper synergizes with the rolling time d...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Yinghan Wen Yuepeng Chen Xuan Guo Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2772: Identifying Characteristic Fire Properties with Stationary and Non-Stationary Fire Alarm Systems
limczak
The article reviews issues associated with the operation of stationary and non-stationary electronic fire alarm systems (FASs). These systems are employed for the fire protection of selected buildings (stationary) or to monitor vast areas, e.g., forests, airports, logistics hubs, etc. (non-stationary). An FAS is operated under various environmental conditions, indoor and outdoor, favourable or unfavourable to the operation process. Therefore, an FAS has to exhibit a reliable structure in terms of power supply and operation. To this end, the paper discusses a representative FAS monitoring a facility and presents...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Micha ł Wiśnios Sebastian Tatko Micha ł Mazur Jacek Pa ś Jaros ław Mateusz Łukasiak Tomasz Klimczak Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2774: Grating (Moir & eacute;) Microinterferometric Displacement/Strain Sensor with Polarization Phase Shift
This article proposes a modification to the conventional waveguide interferometer head, enabling the implementation of a polarization fringe phase shift for automatic fringe pattern analysis. This article presents both the theoretical considerations associated with the proposed solution and its experimental verification, along with the concept of in-plane displacement/strain sensing using the described head. (Source: Sensors)
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Sa łbut Łukaszewski Piekarska Tags: Communication Source Type: research
Sensors, Vol. 24, Pages 2773: Self-Powered Pressure & ndash;Temperature Bimodal Sensing Based on the Piezo-Pyroelectric Effect for Robotic Perception
Sensors, Vol. 24, Pages 2773: Self-Powered Pressure–Temperature Bimodal Sensing Based on the Piezo-Pyroelectric Effect for Robotic Perception
Sensors doi: 10.3390/s24092773
Authors:
Xiang Yu
Yun Ji
Xinyi Shen
Xiaoyun Le
Multifunctional sensors have played a crucial role in constructing high-integration electronic networks. Most of the current multifunctional sensors rely on multiple materials to simultaneously detect different physical stimuli. Here, we demonstrate the large piezo-pyroelectric effect in ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) single crystals for simultaneous pressure and temp...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Xiang Yu Yun Ji Xinyi Shen Xiaoyun Le Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2776: Through-Ice Acoustic Communication for Ocean Worlds Exploration
The objective of this task is to develop the capability to wirelessly communicate through kilometers of ice and thus complement the potentially failure-prone tethers deployed behind an ice-penetrating probe on Ocean Worlds. In this paper, the preliminary work on the development of wireless deep-ice communication is presented and discussed. The communication test and acoustic attenuation measurements in ice have been made by embedding acoustic transceivers in glacial ice at the Matanuska Glacier, Anchorage, Alaska. Field test results show that acoustic communication is viable through ice, demonstrating the transmission of d...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Hyeong Jae Lee Yoseph Bar-Cohen Mircea Badescu Stewart Sherrit Benjamin Hockman Scott Bryant Samuel M. Howell Elodie Lesage Miles Smith Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2775: A Versatile Approach for Adaptive Grid Mapping and Grid Flex-Graph Exploration with a Field-Programmable Gate Array-Based Robot Using Hardware Schemes
na
Sanjay Dubey
Robotic exploration in dynamic and complex environments requires advanced adaptive mapping strategies to ensure accurate representation of the environments. This paper introduces an innovative grid flex-graph exploration (GFGE) algorithm designed for single-robot mapping. This hardware-scheme-based algorithm leverages a combination of quad-grid and graph structures to enhance the efficiency of both local and global mapping implemented on a field-programmable gate array (FPGA). This novel research work involved using sensor fusion to analyze a robot’s behavior and flexibility in the prese...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Mudasar Basha Munuswamy Siva Kumar Mangali Chinna Chinnaiah Siew-Kei Lam Thambipillai Srikanthan Gaddam Divya Vani Narambhatla Janardhan Dodde Hari Krishna Sanjay Dubey Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2777: Recent Development in Intelligent Compaction for Asphalt Pavement Construction: Leveraging Smart Sensors and Machine Learning
In conclusion, leveraging emerging sensing and artificial intelligence presents opportunities to optimize the IC process and address key challenges. However, cooperation across disciplines will be vital to test and refine technologies under real-world conditions. This study serves to advance understanding and highlight priority areas for future research toward the realization of IC’s full potential. (Source: Sensors)
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Yudan Wang Jue Li Xinqiang Zhang Yongsheng Yao Yi Peng Tags: Review Source Type: research
Sensors, Vol. 24, Pages 2778: Research on Tire Surface Damage Detection Method Based on Image Processing
gping Zhang
The performance of the tire has a very important impact on the safe driving of the car, and in the actual use of the tire, due to complex road conditions or use conditions, it will inevitably cause immeasurable wear, scratches and other damage. In order to effectively detect the damage existing in the key parts of the tire, a tire surface damage detection method based on image processing was proposed. In this method, the image of tire side is captured by camera first. Then, the collected images are preprocessed by optimizing the multi-scale bilateral filtering algorithm to enhance the detailed information o...
Source: Sensors - April 26, 2024 Category: Biotechnology Authors: Jiaqi Chen Aijuan Li Fei Zheng Shanshan Chen Weikai He Guangping Zhang Tags: Article Source Type: research
