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检索条件"任意字段=Conference on Advanced Sensor Systems and Applications IV"

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Suppressing Laser Triangulation sensors Optical Aberrations by Replacing the Lens with a Slit 12

Suppressing Laser Triangulation Sensors Optical Aberrations ...

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12th IEEE International conference on Intelligent Data Acquisition and advanced Computing systems: Technology and applications, IDAACS 2023

作者： Lapointe-Pinel, Benjamin Pigeon, Steven Université du Québec À Rimouski RimouskiQCG5L 3A1 Canada

ISBN: (纸本)9798350358056

This paper presents a new capture method for laser triangulation sensors consisting in replacing the lens with a slit - effectively making it a pinhole camera - and exploiting diffraction effects. This new method circumvents optical aberrations such as spherical, defocusing, coma, field curvature, and lens distortion, as well as lens flare to a point where it can be virtually ignored. Moreover, using a slit reduces the number of optical parts and simplifies the modeling of the laser spot to find its center. To test our proposed method, we generated data sets taking pictures with both a lens and a slit on different materials placed on a worm gear with its position controlled by a high-precision step motor. With this data, we extracted the center of the laser spot with different image processing algorithms. It was then possible to assess the goodness of fit of the triangulation curve using the sets of captured points by both methods. We show that not only we circumvent the adverse effects of optical aberrations and lens flares, we obtain a more accurate estimation of the actual known distance of the target. © 2023 IEEE.

关键词： diffraction displacement sensor distance measurement laser laser triangulation lens non-contact measurement optical aberration optics pinhole camera pinhole optics range sensor sensor triangulation

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Robust physical quantities estimation for diesel engine emission reduction using sensor fusion

Robust physical quantities estimation for diesel engine emis...

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IEEE conference on Control Technology and applications (CCTA)

作者： Benaitier, Alexis Krainer, Ferdinand Jakubek, Stefan Hametner, Christoph TU Wien Christian Doppler Lab Innovat Control & Monitorin Vienna Austria AVL List GmbH Hans List Pl 1 A-8020 Graz Austria TU Wien Inst Mech & Mechatron Vienna Austria

ISBN: (数字)9781665473385

ISBN: (纸本)9781665473385

Lowering heavy-duty emission thresholds towards ultra-low emission transportation systems constitute a serious challenge. Indeed, the engine and exhaust aftertreatment systems have been complexified for decades to fulfill always stricter regulations. As a result, the powertrain represents a significant part of the final vehicle price. Therefore, advanced control methods are required to meet the upcoming emission thresholds without drastically increasing the system cost and complexity. Such control designs have already shown promising results but require accurate physical estimates - particularly the oxygen content in the intake and the exhaust manifold are essential information for a precise engine and aftertreatment systems control. Although observer methods exist for such accurate and robust estimations, they are not suitable for hardware implementation due to their complexity. This paper introduces an observer to estimate oxygen content-related physical signals. The proposed method takes advantage of all existing sensors and a simple dynamic model within a sensor fusion framework. The observer is implemented in an advanced simulation platform, where the observer estimates are shown to be unbiased and robust to noise and sensor inaccuracies. These results suggest that an advanced controller combined with the proposed observer method could reduce the engine-out transient emissions without supplementary hardware cost or complexity.

关键词： Diesel engine emissions air path observer nonlinear Kalman filter sensor fusion

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APPLICATION AND OPTIMIZATION OF FPGA-BASED REAL-TIME MOTION CONTROL systems IN ROBOTICS

APPLICATION AND OPTIMIZATION OF FPGA-BASED REAL-TIME MOTION ...

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2024 International conference on Electrical Engineering and Intelligent Control, EEIC 2024

作者： Chen, Zimo School of Electrical Electronic and Mechanical Engineering University of Bristol BristolBS8 1QU United Kingdom

ISBN: (纸本)9781837242672

With the increasing popularity of robotic applications in various fields and the important role robots play in technological innovation and high-end manufacturing, it is crucial to optimise their performance. Field Programmable Gate Arrays (FPGAs) have greatly advanced control technology, leading to their integration into traditional robotic motion control systems, thereby enhancing performance, efficiency, and flexibility. The paper reviews traditional motion control techniques such as open-loop, closed-loop, model predictive, and adaptive control, then explores the unique capabilities of FPGAs, including parallel processing, data acceleration, system-level integration, and low-power design. These capabilities are analyzed in the context of improving sensor data processing, motion control algorithms, path planning, motor control, communication, image processing, safety, and power management in robots. The article demonstrates the advantages of using FPGAs for precise control, efficient data processing, parallel processing, and low power consumption in robot motion control. It reveals the great potential of FPGA technology in improving robot performance and efficiency. This not only provides a new path to enhance the adaptability and robustness of robots in complex environments, but also provides guidance for future technology development and industrial applications. © The Institution of Engineering & Technology 2024.

关键词： Adaptive control systems

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Analysis of factors affecting the accuracy of the rotation angle measurement using nanostructured metasurfaces 12

Analysis of factors affecting the accuracy of the rotation a...

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conference on advanced sensor systems and applications XII

作者： Prokhorova, U., V Shalymov, E., V Shoev, V., I Venediktov, V. Yu Kukaev, A. S. St Petersburg Electrotech Univ LETI Laser Measurement & Nav Syst Dept St Petersburg 197376 Russia

ISBN: (纸本)9781510657090;9781510657083

The work is devoted to the analysis of the accuracy characteristics of rotation angle sensors using angular scales from nanostructured metasurfaces. The principle of their operation is based on the dependence of the frequency response of metasurfaces on the orientation of the incident light polarization plane. The influence of the noise characteristic of angle sensors on the measurement result is considered. It is shown that for the sensors considered in the work, it might be on the order of units of arc seconds. The influence on the accuracy characteristics of misalignments of the angular scale and thermal effects that the sensor may experience during operation is analyzed. Recommendations to reduce the influence of parasitic effects and further improve the accuracy characteristics are given.

关键词： metasurfaces nanostructured materials nanophotonics position control systems angle sensor

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Enhancing Movie Recommendation systems through Demographic and Content-Based Filtering Using TF-IDF and Cosine Similarity

Enhancing Movie Recommendation Systems through Demographic a...

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2024 International conference on Artificial Intelligence and Quantum Computation-Based sensor applications, ICAIQSA 2024

作者： Shaikh, Shakila Dani, Diksha SVKM's NMIMS Computer Engineering Mukesh Patel School of Technology Management & Engineeringdept Mumbai India

ISBN: (数字)9798331517953

ISBN: (纸本)9798331517953

the need of data collection in recent years has piloted into a transformative era of information utilization. The recommendation systems represent a specialized type of information filtering mechanisms designed to improve the quality of search outcomes by suggesting items that are highly related to user queries or aligned with their historical interactions. This research uses demographic filtering for a recommending popular and well rated movies to users with similar demographic backgrounds irrespective of genre or other parameters. The methodology used in this paper computes pairwise similarity scores for all movies based on the parameter of descriptions and recommend movies to the users based on that similarity score. TF ∗ IDF is used to calculate the relative frequency that is the importance of the words in description. It vectorizes the object to generate TDF-IDF matrix of plots of movies. Cosine similarity is applied to find similarities between each pair of movies. The above approach generates a matrix in which each column represents a movie and each column has a word from the overview vocabulary that appear in at least one document. This is practiced to decrease the value of words that occur frequently in plot description, and hence reduces their impact in calculating the final similarity score. Demographic and content-based filtering is used for recommendation in this paper, while demographic filtering provides a very fundamental method for recommendation and cannot be used practically, whereas content-based filtering is more advanced and powerful. © 2024 IEEE.

关键词： Wiener filtering

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Distributed sapphire fiber sensors for steel-making industrial applications 3

Distributed sapphire fiber sensors for steel-making industri...

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conference on Optical Waveguide and Laser sensors III

作者： Mumtaz, Farhan Tekle, Hanok Zhang, Bohong Smith, Jeffrey D. O'Malley, Ronald J. Gerald, Rex. E., II Huang, Jie Missouri Univ Sci & Technol Dept Elect & Comp Engn Rolla MO 65409 USA Missouri Univ Sci & Technol Dept Mat Sci & Engn Rolla MO USA

ISBN: (纸本)9781510674073;9781510674066

This research demonstrates femtosecond (FS) laser-written distributed fiber Bragg gratings (FBGs) sensors within sapphire crystalline fiber, tailored for steelmaking applications. The study precisely assesses sensor stability during a 72-hour exposure to severe conditions, including temperatures reaching 1600 degrees C. The FBGs exhibit excellent signal strength and a maintained high signal-to-noise ratio (SNR) by averting external surface reactions with the sapphire fiber. Extensive annealing at 1600 degrees C purifies the sheathing material. By utilizing an extended 1-meter sapphire fiber, this work surmounts the challenges of cascading FBGs in highly multimode waveguides, enabling FBG signal capture in demanding applications. This research enhances our comprehension of FBG performance in high-temperature environments and paves the way for robust optical fiber systems in steelmaking applications, including tundish probes and submerge entry nozzles (SEN) for molten metal casting. Additionally, the exceptional efficiency and precision of sapphire FBG sensors, in contrast to conventional thermocouples, offer the potential to boost productivity, lower energy consumption, and reduce the carbon footprint in the steel industry.

关键词： Sapphire FBGs sensor distributed thermal mapping harsh environment femtosecond laser fiber Bragg gratings steelmaking industry applications tundish probe submerge entry nozzle

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A Simple and Lightweight Mutual Authentication Protocol for Wireless sensor Networks 17

A Simple and Lightweight Mutual Authentication Protocol for ...

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17th IEEE International conference on advanced Networks and Telecommunications systems, ANTS 2023

作者： Vyas, Sauhard Jain, Usha Manipal University Jaipur Department of Computer & Communication Engineering Jaipur India Manipal University Jaipur Department of Computer Science Engineering Jaipur India

ISBN: (纸本)9798350307672

Wireless sensor networks (WSNs) are widely employed in a wide range of applications;because of technological improvements, extremely small sensors are now widely accessible, and their utilisation decreases costs. Because of power and computational limits, wireless network protocols cannot be used on networks with small nodes. We propose a node authentication for nodes in WSNs to avoid security threats and create secure communication between them, based on our understanding of the importance of security in WSNs and the resource constraints of small WSNs. In the proposed Protocol, a base station (S) creates and maintains a secret value and a random number is present in each sensor node. The sensor node authenticates itself by using a secret value and hash functions. Timestamps promotes freshness, efficiency, and durability. Because the proposed protocol is lightweight cryptography, it necessitates little computing, communication, and storage resources. The proposed mechanism's security analysis revealed no security flaws, and it was discovered to have lower storage, communication, and compute overheads. As a result, the proposed is best suited for WSNs with small nodes. © 2023 IEEE.

关键词： sensor nodes

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DBCS-SMJF: Designing a BLDCM Control System for Small Machine Joints Using FOC 19th

DBCS-SMJF: Designing a BLDCM Control System for Small Machin...

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19th International conference on advanced Intelligent Computing Technology and applications (ICIC)

作者： Zhang, Leyi Long, Yingjie Hu, Yingbiao Li, Huinian Guangdong Univ Technol Sch Automat Guangzhou 510006 Peoples R China South China Normal Univ Sch Comp Sci Guangzhou 510631 Peoples R China Macao Polytech Univ Fac Appl Sci Macau 999078 Peoples R China Macao Univ Sci & Technol Sch Comp Sci & Engn Macau 999078 Peoples R China

ISBN: (纸本)9789819947607;9789819947614

This paper proposes a new motor field-oriented control scheme for robot joint control that utilizes linear Hall position sensors. The proposed position sensor can obtain rotor position information of the motor with high precision and low cost, overcoming the limitations of traditional motor control systems that use expensive and bulky encoders. The proposed plan includes a Hall sensor module, an electromagnetic detection module, a motor drive module, and a motor. It has been tested and verified using Ansys magnetic field simulation. The proposed system can improve the accuracy and stability of robot joint control while reducing costs compared to traditional motor Field-Oriented Control (FOC) systems. Using linear Hall position sensors can make the system more compact and lightweight. Future work may focus on further optimizing and refining the design for real-world applications.

关键词： SVPWM FOC Linear Hall sensor Motor PI Controller MCU

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Exploring the Nexus between sensor Reliability and System Performance: A Comprehensive Analysis 16

Exploring the Nexus between Sensor Reliability and System Pe...

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16th Annual conference of the Prognostics and Health Management Society, PHM 2024

作者： Tripathy, Deepak Gottumukkala, Rahul Kim, Derek PHM Technology North FitzroyVIC3068 Australia

ISBN: (纸本)9781936263059

In contemporary technological landscapes, sensors play a pivotal role in enabling diverse applications across industries, from healthcare to manufacturing. This paper undertakes a thorough investigation on system performance (reliability and availability of a system), focusing on the critical interplay between baseline performance, performance with integrated sensors and performance considering sensor reliability, recognizing the foundational importance of sensors in data-driven decision-making processes. The research employs a causation-based approach to systematically develop functional relations within the system. The failures identified of each component and functional relationships will then be analyzed using a simulation technique to understand the inherent performance of the engineering system. From here, a genetic algorithm is used to design a sensor set and tailor it for an engineering system, providing a foundation for conducting trade studies in the paper's subsequent sections. Through rigorous quantitative analysis and simulations, we compare the impacts of the performance of the sensor set design compared to the baseline performance. The paper then investigates the complexities of sensor reliability on overall system performance. Through advanced simulations, we elucidate the potential cascading effects that variations in sensor reliability can have on the system's performance. By exploring these ripple effects, we aim to provide a comprehensive understanding of how sensor reliability plays a crucial role in determining the success of complex systems. Beyond the immediate considerations of sensor characteristics, the paper analyses the maintenance aspects of sensors by performing a series of analyses to suggest maintenance aimed at improving the sensor and hence system reliability. Highlighting the relationship between sensor reliability and system performance, this section stresses the critical role of consistent maintenance practices in ensuring susta

关键词： Decision making

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MEMS sensor Based V2V Communication Using Li-Fi Technology 9

MEMS Sensor Based V2V Communication Using Li-Fi Technology

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9th International conference on advanced Computing and Communication systems, ICACCS 2023

作者： Thandapani, Kavitha Nagarajan, P. Pappa, C. Kanmani Ashokkumar, N. VelTech Rangarajan Dr.Sagunthala Rand D Institute of Science and Technology Department of ECE Tamilnadu India SRMIST Department of ECE Vadapalni Campus Tamililnadu Chennai India Mohan Babu University Department of ECE AndraPradesh Tirupati India

ISBN: (纸本)9798350397376

Due to its extensive use in intelligent transportation systems, the topic of traffic accident detection is quickly becoming one of the most fascinating ones. The absence of inexperienced drivers, driving while intoxicated, driving too fast, and driving while sleepy are the main contributors to these traffic accidents. Numerous measures have been used to stop these traffic accidents. However, the majority of them failed to stop this. We demonstrate an upgraded Li-Fi accident detection method in this study. The proposed model offers an intelligent system for the identification and avoid of accidents for the protection of human life. sensors like mems sensors and ultrasonic sensors are used in that preventative component. When a sensor determines there is not enough space between two vehicles, it notifies the vehicle in front of it. © 2023 IEEE.

关键词： Ultrasonic applications

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