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IEEE sensors Applications Symposium, SAS

作者： Tra Nguyen Phan Ye Xu Olfa Kanoun Bengt Oelmann Sebastian Bader Department of Computer and Electrical Engineering Mid Sweden University Sundsvall Sweden Measurement and Sensor Technology Chemnitz University of Technology Chemnitz Germany

ISBN: (数字)9798350369250

ISBN: (纸本)9798350369267

Energy harvesting has been proposed to support or replace battery-based energy supplies in low-power loT systems. However, manual design and optimization is currently required to implement energy harvesters. This implies significant time and cost requirements, reducing the competitiveness of energy harvesting solutions in many applications. In this paper, we propose and study a method for the automated design of ortho-planar springs in vibration energy harvesters. The proposed method uses a Python tool that has been developed to translate parametric descriptions of the spring into 2D and 3D spring CAD models. The tool is combined with a black-box optimization algorithm in order to identify optimized spring parameters. An evaluation of the proposed method on a case study of an electromagnetic vibration energy harvester demonstrates that the approach successfully results in spring designs that perform well in the energy harvesting application. Consequently, the requirement of expert competence to adjust an energy harvester to new application constraints is significantly reduced, contributing to the availability and competitiveness of energy harvesting solutions in real world applications.

关键词： Vibrations Solid modeling Three-dimensional displays Closed box Voltage Energy harvesting Springs

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Influences on the propagation of light beams by the near surface layer of atmosphere and the correction methods 6

Influences on the propagation of light beams by the near sur...

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6th Conference on Frontiers in Optical Imaging and technology: Imaging Detection and Target Recognition

作者： Yunqiang, Lai Shangmin, Lin Hu, Wang Xuan, Zhang Yu, Jin Wenlong, He Yaoke, Xue Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences Xi’an710119 China Beijing101408 China Xi’an Space Sensor Optical Technology Engineering Research Center Xi'an710119 China Key Laboratory of Space Precision Measurement Technology Chinese Academy of Sciences Xi’an710119 China

ISBN: (数字)9781510679733

ISBN: (纸本)9781510679726

With the increasingly widespread and important application of optics in modern human life and production, research on the propagation characteristics and correction methods of light beams in the atmosphere near the ground surface is becoming increasingly important. The complex atmospheric environment near the ground can affect the propagation of light beams, causing effects such as energy attenuation, beam expansion, beam drift, intensity flicker, phase fluctuations, etc., reducing the quality of beam propagation and affecting the performance of optical applications in various fields. A review was conducted on the impact of near-Earth atmosphere on beam propagation and its correction methods, mainly elaborating on the effects of atmospheric absorption, scattering, and turbulence on beam propagation. Correction methods such as adaptive optics, large aperture receiving, spatial diversity, partially coherent light propagation, and image processing are proposed. © 2024 SPIE. All rights reserved.

关键词： Optical data processing

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Inverse Problem Approach for Estimating Operating Conditions and Uncertainty Quantification in Actual Forced Convection System

Inverse Problem Approach for Estimating Operating Conditions...

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2024 International Congress on Advances in Nuclear Power Plants, ICAPP 2024

作者： Kim, Haeseong Cetiner, Sacit Bucci, Matteo Nuclear Science and Technology Department Massachusetts Institute of Technology CambridgeMA United States INL MIT Center for Reactor Instrumentation and Sensor Physics MIT Nuclear Reactor Laboratory CambridgeMA United States Measurement Sciences Laboratory Idaho National Laboratory Idaho FallID United States

ISBN: (纸本)9780894487996

In this work, we apply the inverse problem method to infer operating conditions and simultaneously quantify uncertainties in steady-state turbulent forced convection systems. This approach dealt with reduced variable dimensions using prior knowledge of the system to avoid underdetermined problems. The methodology encompasses modeling the heat transfer system with the energy equation, employing Newton's method to solve the inverse problem, and quantifying total uncertainties arising from various sources. Significantly, this study extends the inverse heat transfer problem's scope to the actual thermal-fluid problem, overcoming the challenge of minimal sensor usage while ensuring the accuracy of estimation. This work not only demonstrates the application of inverse problem-solving in thermal-fluid systems but also contributes to the further development of sparse sensing methods. The results of this study enhance thermal system monitoring and control efficiency with broader industrial and environmental applications. They also lay the groundwork for advanced sparse sensing and inverse problem-solving, transforming thermal system analysis and optimization methods. © ICAPP *** rights reserved.

关键词： Forced convection

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An ultrastable metrology laser for traceable length metrology in nanopositioning machines – Towards a 10−12 uncertainty level

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measurement: sensors 2025年 38卷

作者： Blumröder, Ulrike Köchert, Paul Fröhlich, Thomas Ortlepp, Ingo Kissinger, Thomas Manske, Eberhard Technische Universität Ilmenau Institute of Process Measurement and Sensor Technology Ilmenau Germany Precision Engineering Division Braunschweig Germany

In this contribution we propose the incorporation of a diode laser stabilized to an ultrastable cavity (ORS) as a metrology laser within the interferometric length measurement system of a nanopositioning and -measuring machine with a lateral measurement range of 200 mm. Based on a frequency instability analysis of the ORS against a GPS-referenced frequency comb we observed a frequency drift of 6.2 kHz(Δf/f = 1.3∙10−11) during the course of one day and peak-to-peak variations below 81 kHz (Δf/f = 1.7∙10−10) over observation times up to ten days. Within daily operation of the NPMM-200, the influence of cavity-related frequency changes practically falling below the current digital resolution limit of the interferometric measurement system (2.86∙10−11) and can therefore be neglected, if a sufficient predetermination of the absolute frequency using an optical frequency comb has been applied. To guarantee an absolute tracking of the laser frequency within a non-stop service operation of the ORS at an uncertainty level of 1∙10−12, a suitable correction for the long-term frequency changes of the cavity with the help of the frequency comb has to be established. © 2024

关键词： Frequency stability

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Simulation of a temperature-compensated palladium-based fiber optic hydrogen sensor and comparison with measurements

Simulation of a temperature-compensated palladium-based fibe...

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2023 European Workshop on Optical Fibre sensors, EWOFS 2023

作者： Buchfellner, Fabian Bian, Qiang Röhrl, Alexander Zhang, Fan Hu, Wenbin Yang, Minghong Koch, Alexander W. Roths, Johannes Photonics Lab Munich University of Applied Sciences Munich80335 Germany Institute for Measurement Systems and Sensor Technology Technical University Munich Munich80333 Germany National Engineering Research Center for Optical Fiber Sensing Technology Wuhan University of Technology Wuhan430070 China

ISBN: (纸本)9781510665002

A temperature-compensated sensor architecture for a fiber optic hydrogen sensor consisting of a partly palladium-coated pi-shifted fiber Bragg grating was modeled and compared with measurements. The transfer matrix formalism was used to calculate the spectral line shape of the pi-shifted FBG with a hydrogen-induced, non-homogeneous strain distribution along the grating axis. The temperature response of the grating itself can be compensated by referencing the notch to the flank wavelength. In addition, the hydrogen solubility in Pd shows a non-linear temperature dependence that was also included in the sensor performance calculations. For the investigated H2 concentration range of 200 ppm to 20000 ppm and between 15 °C and 40 °C, measurement data fit well to the simulation above 3000 ppm but become diffuse below, indicating deviations from the expected dependence according to Sieverts’ square root law. © 2023 SPIE.

关键词： Fiber Bragg gratings

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Design of an Energy Efficient sensor Node for Wearable Applications

Design of an Energy Efficient Sensor Node for Wearable Appli...

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IEEE Instrumentation and measurement technology Conference

作者： Abdallah Adawy Achraf Djemal Lidu Wang Ghada Bouattour Ahmed Fakhfakh Olfa Kanoun Measurement and Sensor Technology Faculty of Electrical Engineering and Information Technology Chemnitz University of Technology Chemnitz Germany Laboratory of Signals Systems Artificial Intelligence and Networks Digital Research Centre of Sfax National School of Electronics and Telecommunications of Sfax Technopole of Sfax Tunisia Measurement and Sensor Technology in Production Engineering Leuphana University Lüneburg Germany

ISBN: (数字)9798350380903

ISBN: (纸本)9798350380910

The demand for compact and low-power sensor nodes (SNs) as wearable devices has increased significantly as they contribute significantly to the monitoring of people's health status, providing valuable information for the treatment of various diseases. To address this issue for epilepsy diagnosis, we propose an energy-efficient SN design. The SN incorporates both accelerometer and gyroscope sensors monitoring movements and can be easily attached to an electromyography (EMG) sensor monitoring muscle activities. An internal contact socket allows seamless integration of both devices. The designed system has been tested on a healthy subject and has demonstrated high-quality data measurement. The SN uses low-power Bluetooth 5.0 to communicate with the mobile application, which is designed to modify the built-in sensor parameters and monitor sensor output in real-time. It has an average current consumption of 14.3 mA. In addition, all data from the developed system can be stored on an attached SD card, providing a reliable storage solution.

关键词： Accelerometers Wireless sensor networks Three-dimensional displays Epilepsy Electromyography Real-time systems Energy efficiency

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Direct Comparison of the Strain measurement Performance of Fibre Bragg Gratings and Fibre Segment Interferometry 28

Direct Comparison of the Strain Measurement Performance of F...

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28th International Conference on Optical Fiber sensors, OFS 2023

作者： Barrington, James H. Kissinger, Thomas James, Stephen W. Tatam, Ralph P. Centre for Engineering Photonics Cranfield University CranfieldMK43 0AL United Kingdom Institute of Process Measurement and Sensor Technology Technical University of Ilmenau PF 100565 Ilmenau98694 Germany

ISBN: (纸本)9781957171302

The strain sensing performance of an optical fibre Bragg grating (FBG), demodulated using a state-of-the-art commercial interrogator, is compared directly with that of a fibre segment interferometer (FSI) of near equivalent gauge length. It is shown that the FSI segment displayed a 5 fold improvement in noise, 1 nΕ/√Hz for a bandwidth of 1 kHz, compared to 5 nΕ/√Hz at 1 kHz to that of the FBG. Furthermore, by exploiting a longer gauge length, it was also demonstrated that this could further reduce noise levels. © Optica Publishing Group 2023, © 2023 The Author(s)

关键词： Fiber Bragg gratings

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Vulnerabilities and Challenges in the Development of PUF-Based Authentication Protocols on FPGAs: A Brief Review 7

Vulnerabilities and Challenges in the Development of PUF-Bas...

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7th IEEE Conference on Dependable and Secure Computing, DSC 2024

作者： Yavuz, Sinan Naroska, Edwin Daniel, Kai University of Siegen Department of Electrical Engineering and Computer Science Siegen Germany Niederrhein University of Applied Sciences Department of Electrical Engineering and Computer Science Krefeld Germany Institute of Measurement and Sensor Technology University of Applied Sciences Ruhr West Mülheim Germany

ISBN: (纸本)9798331540289

The security of IoT (Internet of Things) devices and the protection of sensitive information processed by these devices such as personal data, sensor values, process-related information is an important and difficult challenge. A major task in IoT communication is secure identification of devices. Unfortunately, traditional cryptographic methods are often not suitable for IoT devices due to their limited hardware resources. However, typical methods are computationally intensive, require a large amount of memory, and have a high-power consumption. On the other hand, Physical Unclonable Functions (PUFs) are low-cost and lightweight hardware-based primitives that can be used as a security component to protect data against third parties and thus increase security of a device. In this paper, the challenges and vulnerabilities in the development of PUF-based authentication protocols are presented. To this end, a security analysis of different approaches known from literature are discussed. Furthermore, possible attack vectors and prevention techniques are also considered. © 2024 IEEE.

关键词： Authentication Protocol

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Towards an Enhanced Metrology Analysis Procedure for Assessing Position Accuracy of Edge-Emitting Lasers to Photonic Integrated Circuits

Towards an Enhanced Metrology Analysis Procedure for Assessi...

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IEEE Photonics Conference (IPC)

作者： Jakob Wilhelm Hinum-Wagner Jochen Kraft Victor Sidorov Samuel Hoermann Gandolf Feigl Alexander Bergmann Ams Osram Group Premstaetten Austria Institute of Electrical Measurement and Sensor Systems Graz University of Technology Graz Austria

ISBN: (数字)9798350361957

ISBN: (纸本)9798350361964

Advanced photonic integrated systems require precise light source coupling, especially with edge-emitting lasers. This paper discusses how passive 2D alignment achieves below-micron accuracy. It introduces a metrology procedure for consistent analysis of the positioning process in manufacturing, ensuring optimal performance and reliable failure analysis.

关键词： Semiconductor device measurement Micrometers Accuracy Lasers Photonic integrated circuits Metrology Assembly Surface treatment Standards Photonics

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IONIC LIQUID FUNCTIONALIZED GRAPHENE OXIDE DECORATED BY GOLD NANOPARTICLES FOR ELECTROCHEMICAL DETECTION OF PIRIMICARB PESTICIDES 9

IONIC LIQUID FUNCTIONALIZED GRAPHENE OXIDE DECORATED BY GOLD...

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9th EnvIMEKO Symposium of Environmental Instrumentation and measurements, EnvIMEKO 2022

作者： Weheabby, Saddam Al-Hamry, Ammar Deller, Andrei E. Ruthes, Jean G.A. Silva, Rafael J. Kanoun, Olfa Professorship of Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany Research Group of Macromolecules and Interfaces Universidade Federal do Paraná Brazil

ISBN: (纸本)9789299009031

Monitoring pesticide contaminants in diverse environmental systems has become a significant concern. A non-enzymatic electrochemical sensor for pirimicarb pesticide detection has been produced by functionalization of the screen-printed carbon electrodes (SPCE) with graphene oxide, ionic liquid, and gold nanoparticles (GO/IL/AuNps/SPCE). Cyclic voltammetry and electrochemical impedance spectroscopy techniques were applied for the electrochemical characterization of the modified electrode in the presence of [Fe(CN)6]3-/4- as a redox probe. The system showed an exponential response in a concentration range from 50 pM to 500 nM of pirimicarb with a sensitivity of 5.74 × 10-3 µA pM-1 mm-2, and the Limit of detection (LOD) is 10.30 pM. © 2022 9th EnvIMEKO Symposium of Environmental Instrumentation and measurements, EnvIMEKO 2022. All Rights Reserved.

关键词： Gold nanoparticles

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