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conference on sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace systems

作者： Farhangdoust, Saman Aghaei, Sadegh Mehdi Amirahmadi, Maryam Pala, Nezih Mehrabi, Armin Florida Int Univ Dept Civil & Environm Engn Miami FL 33199 USA Worcester Polytech Inst Dept Mech Engn Worcester MA 01609 USA Namazi Hosp Cardiothorac Surg Unit Shiraz Iran Florida Int Univ Dept Elect & Comp Engn Miami FL 33199 USA

ISBN: (数字)9781510635364

ISBN: (纸本)9781510635364

In this paper, an auxetic design is proposed for the flexible membrane of a piezoelectric pulse sensor and computationally analyzed for a high-sensitivity vibration sensing in micro electro-mechanical system (MEMS). Auxetics are metamaterial structures with negative Poisson's ratio which enables sensor's flexible diaphragm to be expanded in both longitudinal and transverse directions easily. The sensitivity of a pulse sensor with an auxetic membrane was studied and compared to an equivalent plain membrane when the substrate was under harmonic bending. The sensing response was determined for the both models using detailed Finite Element Model (FEM) simulations. The sensor with the auxetic membrane demonstrated excellent sensitivity output over a harmonic pressure input which shows its strong potential for high-sensitive MEMS sensing applications. A detailed fabrication process is also discussed.

关键词： Auxetic MEMS sensor Wearable Pulse sensor Metamaterials Auxetic Membrane Piezoelectric Implantable Cardiovascular sensors

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Integrated monitoring of wind plant systems

Integrated monitoring of wind plant systems

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conference on Smart sensor, Phenomena, Technology, Networks, and systems

作者： Whelan, Matthew J. Janoyan, Kerop D. Qiu, Tong Clarkson Univ Dept Civil & Environm Engn Potsdam NY 13699 USA

ISBN: (纸本)9780819471192

Wind power is a renewable source of energy that is quickly gaining acceptance by many. advanced sensor technologies have currently focused solely on improving wind turbine rotor aerodynamics and increasing of the efficiency of the blade design and concentration. Alternatively, potential improvements in wind plant efficiency may be realized through reduction of reactionary losses of kinetic energy to the structural and substructural systems supporting the turbine mechanics. Investigation of the complete dynamic structural response of the wind plant is proposed using a large-scale, high-rate wireless sensor network. The wireless network enables sensors to be placed across the sizable structure, including the rotating blades, without consideration of cabling issues and the economic burden associated with large spools of measurement cables. A large array of multi-axis accelerometers is utilized to evaluate the modal properties of the system as well as individual members and would enable long-term structural condition monitoring of the wind turbine as well. Additionally, environmental parameters, including wind speed, temperature, and humidity, are wirelessly collected for correlation. Such a wireless system could be integrated with electrical monitoring sensors and actuators and incorporated into a remote multi-turbine centralized plant monitoring and control system.

关键词： Wind turbine technology Wind energy sensor networks sensors Aerodynamics Energy efficiency Humidity Mechanics sensor technology System integration

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3D Gait Recognition Based on a CNN-LSTM Network with the Fusion of SkeGEI and DA Features 16

3D Gait Recognition Based on a CNN-LSTM Network with the Fus...

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16th IEEE International conference on advanced Video and Signal Based Surveillance (AVSS)

作者： Liu, Yu Jiang, xinghao Sun, Tanfeng xu, Ke Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn 800 Dongchuan RD Shanghai Peoples R China

ISBN: (纸本)9781728109909

Gait recognition is a promising technology in biometrics in video surveillance applications for its characteristics of non-contact and uniqueness. With the popularization of the Kinect sensor, human gait can be recognized based on the 3D skeletal information. For exploiting raw depth data captured by Kinect device effectively, a novel gait recognition approach based on Skeleton Gait Energy Image (SkeGEI) and Relative Distance and Angle (DA) features fusion is proposed. They are fused in backward to complement each other for gait recognition. In order to maintain as much gait information as possible, a CNN-LSTM network is designed to extract the temporal-spatial deep feature information from SkeGEI and DA features. The experiments evaluated on three datasets show that our approach performs superior to most gait recognition approaches with multi-directional and abnormal patterns.

关键词： Security systems

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An Accuracy-Area Tradeoff for Mixed-Signal Computation in Programmable Smart Image sensors 16

An Accuracy-Area Tradeoff for Mixed-Signal Computation in Pr...

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16th IEEE International New Circuits and systems conference (NEWCAS)

作者： Le Hir, Juliette Vinci dos Santos, Filipe Kolar, Anthony UPMC Univ Paris 06 Sorbonne Univ Univ Paris Saclay Univ Paris SudCent SupelecGeePsUMR CNRS 8507 Gif Sur Yvette France Cent Supelec SANA Adv Analog Design Grp Gif Sur Yvette France

ISBN: (纸本)9781538648599

Tightly embedded systems often require low power real time processing of acquired sensor data. This paper presents the design and transistor-level implementation of a mixed-signal processing element for highly area-constrained systems in applications where approximate computing is sufficient. The analog processing unit consists of a switched capacitor circuit whose imperfections such as finite gain or offset errors are evaluated here through theoretical analyses and Monte Carlo simulations for a CMOS 0.35 mu m technology. Transistor-level simulation results further demonstrate that this processing unit is suitable for image pre-processing tasks such as spatial convolution for edge detection.

关键词： lived analog-digital electronics approximate computing algorithm-architecture matching smart image sensor vision system on a chip (VSoC)

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Adding extra sensitivity to the SMART non-linear actuator using sensor fusion

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INDUSTRIAL ROBOT-THE INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH AND APPLICATION 2004年第2期31卷 179-188页

作者： Montes, H Pedraza, L Armada, M Akinfiev, T Caballero, R Ind Automat Inst Dept Automat Control Madrid Spain Univ Tecnol Panama Panama City Panama

The prospect of using humanoid robots in practical applications attracts an important research effort and the latest steps forward in robot technology show many remarkable achievements where design aspects, control systems and software evolution regarding humanoid machines have been realised. While aiming to improve humanoid robots' overall performance, it is required that they could work for a long time spending minimum energy without losing their kinematic skills. In this direction, a new kind of non-linear actuator, SMART, based on quasi-resonance principle, has been developed by the Industrial Automation Institute to improve the overall performance of biped locomotion.

关键词： sensors sensor fusion robotics actuators

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Methodology to assess security risks involved in networked systems

Methodology to assess security risks involved in networked s...

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International conference on advanced Computing and Communications

作者： Nandini, P. Sarukesi, K. Rajalakshmi Engn Coll Madras Tamil Nadu India

ISBN: (纸本)9781424407156

The security risks associated with network systems is a topic that has become increasingly significant in this millennium. The increased visibility, the catastrophic financial effects of a number of corporate security breaches have made the management of risk of all types is the front-burner issue of all corporate sectors. This paper assesses Information Security that commences with a statement of the problem of information security risks and presents a comprehensive methodology to analyze security risks along with suitable parameters and areas of risks involved. The final outcome of this research is assessing security that is practical enough to be used in real applications with acceptable results, without having to be an expert in the security arena. It is built upon the concepts drawn from the computer security leaders in the industry and are tested.

关键词： business risks security countermesaures solution class

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Low Cost Wireless Accelerometer sensor Platform with Internet-of-Things for Manufacturing (IOT4MFG) applications 11

Low Cost Wireless Accelerometer Sensor Platform with Interne...

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Micro- and Nanotechnology sensors, systems, and applications xI conference / SPIE Defense and Security Symposium

作者： Saleeby, Kyle S. Kurfess, Thomas R. Georgia Inst Technol 771 Ferst Dr NW Atlanta GA 30313 USA Oak Ridge Natl Lab 2350 Cherahala BlvdMS 6470 Knoxville TN 37932 USA

ISBN: (纸本)9781510626300

sensors are ubiquitous in modern manufacturing operations, and they generate significant quantities of data. With the advent of low cost, readily available broad band communication and virtually infinite cloud storage, many of the old stigmatisms related to taking data from a plant are no longer of concern. However, the question still remains as to what to do with the data. This lecture will discuss the use of large scale data sets from production operations and how they can be leveraged to better understand not only traditional operations, but untapped opportunities from data that are readily available today. Such opportunities provide an improved platform for classical analytic techniques as well as more modern, data intensive approaches to process and operations modeling. The talk will then focus on a specific next generation digital representations and their application to low cost, highly flexible implementations. Examples will be given for both manufacturing operations (additive and subtractive) and validation/verification, as well as how this capability is extensible to cloud computing operations, and next generation technology and business models such as Desktop as a Service (DAAS). A Wireless Accelerometer sensor Platform (WASP) is presented as an extremely low-cost, wireless, and robust method to monitor manufacturing equipment of any age. The talk will conclude with a discussion of the technology, workforce and infrastructural directions and needs to fully enable the next generation digital twin, and where such a capability will drive the future of manufacturing.

关键词： IoT4MFG machine monitoring low-cost sensor wireless communication bearing analysis industrial IoT

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Feature-based anomaly detection

Feature-based anomaly detection

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conference on Signal Processing, sensor Fusion, and Target Recognition xVI

作者： Carlotto, Mark J. General Dynamics Advanced Information Systems (United States)

ISBN: (纸本)9780819466891

A feature-based approach for detecting anomalies in spectral, spatial, temporal, and other domains is described. When the frequency of occurrence is small relative to the background, anomalies such as man-made objects in natural image backgrounds do not form their own clusters, but are instead assigned the nearest background cluster, becoming an outlier (statistical anomaly) in that cluster. Our method clusters data, which may be spectral, spatial, or temporal in nature, into one or more background types and computes the Mahalanobis distance between the data and assigned model (background cluster). The detection of a variety of objects and phenomena in panchromatic and multispectral imagery, and video are illustrated.

关键词： spectral spatial and temporal anomnaly detection Mahalanobis distance background modeling wedge-ring filters

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Analysis of LPFG sensor systems for Aircraft Wing Drag Optimization 5

Analysis of LPFG Sensor Systems for Aircraft Wing Drag Optim...

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conference on Photonics applications for Aviation, Aerospace, Commercial, and Harsh Environments V

作者： Kazemi, Alex A. Ishihara, Abe Boeing Commercial Airplane Co Everett WA 98204 USA ARK Int Pasadena CA 91101 USA Carnegie Mellon Univ Moffett Field CA 94035 USA

ISBN: (纸本)9781628412291

In normal fiber, the refractive indices of the core and cladding do not change along the length of the fiber;however, by inducing a periodic modulation of refractive index along the length in the core of the optical fiber, the optical fiber grating is produced. This exhibits very interesting spectral properties and for this reason we propose to develop and integrate a distributed sensor network based on long period fiber gratings (LPFGs) technology which has grating periods on the order of 100 mu m to 1 mm to be embedded in the wing section of aircraft to measure bending and torsion in real-time in order to measure wing deformation of commercial airplanes resulting in extensive benefits such as reduced structural weight, mitigation of induced drag and lower fuel consumption which is fifty percent of total cost of operation for airline industry. Fiber optic sensors measurement capabilities are as vital as they are for other sensing technologies, but optical measurements differ in important ways. In this paper we focus on the testing and aviation requirements for LPFG sensors. We discuss the bases of aviation standards for fiber optic sensor measurements, and the quantities that are measured. Our main objective is to optimize the design for material, mechanical, optical and environmental requirements. We discuss the analysis and evaluation of extensive testing of LPFG sensor systems such as attenuation, environmental, humidity, fluid immersion, temperature cycling, aging, smoke, flammability, impact resistance, flexure endurance, tensile, vitiation and shock.

关键词： Analysis Fiber Optic Testing Long Period Fiber Gratings (LPFG) sensor Drag Optimization Wing Section of Aircraft Aviation

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Performance Analysis of End-to-End sensor-to-Cloud Personal Living Platform 8

Performance Analysis of End-to-End Sensor-to-Cloud Personal ...

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8th International conference on Emerging Ubiquitous systems and Pervasive Networks (EUSPN) / 7th International conference on Current and Future Trends of Information and Communication Technologies in Healthcare (ICTH)

作者： Goleva, Rossitza Stainov, Rumen Kletnikov, Nikola Achkoski, Jugoslav Mirtchev, Seferin Ganchev, Ivan Savov, Aleksandar Tech Univ Sofia Comicon Ltd Dept Commun Networks Kl Ohridski Blvd 8 Sofia 1756 Bulgaria Univ Appl Sci Appl Comp Sci Dept Fulda Germany Ss Cyril & Methodius Univ Mil Acad Gen Mihailo Apostolski Skopje Fac Comp Sci & Engn Dept Secur Crisis Protect & RequeueFYROM Skopje Macedonia Univ Limerick Limerick Ireland Univ Plovdiv Paisii Hilendarski Plovdiv Bulgaria Comicon Ltd Mladost 4AL Paskalev StrBitov kombinatFl 2 Sofia 1715 Bulgaria

This paper presents a performance analysis of the end-to-end sensor-to-cloud personal living platform. The analysis is based on a typical architecture starting from a single sensor and actuator and continuing to the virtualized services at smart dust, dew, fog and cloud level. The system is diverse and allows interconnection of different sensors/ actuators technologies directly or throughout gateways. The experiments in a living lab presented use energy harvesters and ZigBee PRO sensors. The results from sensor network are applicable for non-real-time and non-critical data connection. As a final conclusion, we claim that for critical and non-critical measurements that need to be supported in a typical living environment there is a necessity to use different priorities of the services and different sensors as well. (c) 2017 The Authors. Published by Elsevier B.V.

关键词： sensor technology cloud performance analysis living lab non-real-time communication critical and non-critical data

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