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IEEE Conference on Dependable and Secure Computing

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

ISBN: (数字)9798331540289

ISBN: (纸本)9798331540296

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.

关键词： Protocols Reviews Authentication Physical unclonable function Vectors Security Internet of Things Servers Object recognition Field programmable gate arrays

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Usability Tests on the Temperature-Induced Changes in Magnetic Hysteresis During Steel Production

Usability Tests on the Temperature-Induced Changes in Magnet...

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Impedance Spectroscopy (IWIS), International Workshop on

作者： Marc Simoneit Jonas Brodmann Stephan Schulze Andreas Hennig Jörg Himmel Institute for Measurement Engineering and Sensor Technology University of Applied Sciences Ruhr West Mülheim a. d. Ruhr Germany Senior Expert Research & Development SMS Group GmbH Düsseldorf Germany

This paper presents an inductive measuring system using a two-pancake coil setup for monitoring the electromagnetic properties of steel sheets. An experimental setup was developed to perform measurements on cooling sheet metal samples during real structural transformations. Additional to the experiments with hot steel sheets, a simulation in COMSOL Multiphysics was used to validate the measurement results. The experiments conducted with the cooling material confirmed the suitability of the measurement system for the application described. The results obtained in this work show that by evaluating the phase shift between the exciting magnetic field H and the induction B, the structural transformation can be reliably monitored. In this work, a phase shift of 2 degrees was measured when a steel sheet was cooled by about 200 degrees Celsius.

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Development of a 2–4 Double Arbiter PUF Design on FPGA with Enhanced Performance

Development of a 2–4 Double Arbiter PUF Design on FPGA with...

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IEEE sensorS

ISBN: (数字)9798350363517

ISBN: (纸本)9798350363524

Implementation of delay-based Physical Unclonable Functions (PUFs) on FPGAs poses significant challenges due to high requirements, such as the generation of unique and reliable keys. These requirements must be fulfilled, especially when using PUFs in security applications, otherwise security cannot be guaranteed. In addition, it must be ensured that physical disturbances such as fluctuations in the ambient temperature do not have a major impact on the performance of the PUF and therefore on security. In this paper, the implementation and evaluation of a novel 56-bit 2–4 Double Arbiter PUF (DAPUF) is presented. For performance analysis, the proposed 2–4 DAPUF is investigated with 20 Digilent Nexys-3 (AMD-Xilinx Spartan-6 FPGA) boards and a large data set of 30 million challenges under varying ambient temperature in the range from 0°C to 50°C. Our experimental results show that the proposed 2–4 DAPUF is resistant to temperature fluctuations. Here, the maximum change in reliability amounts to 1.18 %. For randomness and uniqueness, the changes are less than 0.50 %. Furthermore, our results show that performance can be significantly improved by combining PUFs with XOR operations.

关键词： Resistance Temperature distribution Fluctuations Physical unclonable function sensors Performance analysis Security Field programmable gate arrays

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Investigation of Electrochemical Detection of Nitrite and Nitrate in Water for Environmental Application 9

Investigation of Electrochemical Detection of Nitrite and Ni...

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

作者： Talbi, Malak Al-Hamry, Ammar Lu, Tianqi Ali, Mounir Ben Kanoun, Olfa Professorship of Measurement and Sensor Technology Technische Universität Chemnitz Reichenhainer Str.70 Chemnitz09126 Germany NANOMISENE Lab LR16CRMN01 Centre for Research on Microelectronics and Nanotechnology of Sousse University of Sousse Sousse4034 Tunisia Electronic Department University of Sousse Higher Institute of Applied Science and Technology of Sousse Sousse4003 Tunisia

ISBN: (纸本)9789299009031

This paper is about electrochemical investigations of nitrite (NO2−) and nitrate (NO3−) detection in water. Herein, a study based on functionalization of carbon screen-printed electrodes (CSPE) with chitosan and tetrasulfonated copper (II) phthalocyanine nanocomposite (Chit/Ts-CuPc). Cyclic voltammetry (CV) surveys were carried out with ferri/ferrocyanide probe and analytes for preliminary investigations to confirm the efficacity of the electrode's functionalization. Differential pulse voltammetry (DPV) measurements then were performed for more precise and sensitive detection with different analytes concentrations. Further studies regarding pH optimization, electrodes kinetics and calibration curve will be performed to calculate the sensor's figures of merits. As well as a real sample test is to be done to prove that the developed sensors are very promising for effective nitrite and nitrate detection. © 2022 9th EnvIMEKO Symposium of Environmental Instrumentation and measurements, EnvIMEKO 2022. All Rights Reserved.

关键词： Nitrates

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Inductive sensor for Magnetic Property Evaluation in Hot Rolling Mill Wire Production

Inductive Sensor for Magnetic Property Evaluation in Hot Rol...

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Impedance Spectroscopy (IWIS), International Workshop on

作者： Jonas Brodmann Marc Simoneit Stephan Schulze Andreas Hennig Jörg Himmel Institute for Measurement Engineering and Sensor Technology Ruhr West University of Applied Sciences Mülheim a. d. Ruhr Germany Senior Expert Research & Development SMS Group GmbH Düsseldorf Germany

This paper presents the results of a preliminary investigation for the development of an inductive sensor system for in-situ measurements in hot rolling mill steel wire production. The developed system should monitor the surface layer of the wire concerning changes in the microstructural composition using magnetic property evaluation. The sensor consists of two surrounding coils and evaluates a measure related to the slope of the commutation curve around the origin of the coordinate system This presented preliminary investigation discussed, whether the evaluation of the AC commutation curve under nonnegligible eddy currents is suitable to distinguish between two different microstructures. In addition, it was investigated, whether the measurement concept remains valid under plant conditions with high temperatures up to 600 °C. Within this work, two samples of 17 mm diameter and 175 mm length with different microstructural compositions could be distinguished under laboratory conditions at room temperature and in high-temperature experiments. The results could be plausibilized using the virgin magnetization curve in COMSOL Multiphysics, which was modified to model the magnetic behavior of the material for higher temperatures.

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Full-Waveform Modeling for Time-of-Flight measurements based on Arrival Time of Photons

arXiv

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arXiv 2022年

作者： Fink, Maximilian Schardt, Michael Baier, Valentin Wang, Kun Jakobi, Martin Koch, Alexander W. Technical University of Munich Department of Electrical and Computer Engineering Institute for Measurement Systems and Sensor Technology Munich80333 Germany Blickfeld GmbH Munich80339 Germany

Modern LiDAR sensors find increasing use in safety-critical applications. Therefore, highly accurate modeling of the system’s behavior under demanding environmental conditions is necessary. In this paper, we present a modular structure to accurately simulate the amplified raw detector signal of a direct time-of-flight LiDAR system for coaxial transmitter-receiver optics. Our model describes, a measurement system based on standard optical components and a detector able of converting single photons to an electrical signal. To verify the model’s predictions, single-point measurements for targets of different reflectivity at defined distances were performed. Statistical analysis shows an R-squared value greater than 0.990 for simulated and measured signal amplitude levels. Noise modeling shows good accordance with the performed measurements for different target irradiance levels. The presented results have a guiding significance in the modeling of the complex signal processing chain of LiDAR systems, as it enables the prediction of key parameters of the system early in the development process. Hence, unnecessary costs by design flaws can be mitigated. The modular structure allows easy adaption for arbitrary LiDAR systems. Copyright © 2022, The Authors. All rights reserved.

关键词： Optical radar

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An Empirical Model for State of Charge Estimation Based on Electrochemical Impedance Spectroscopy

An Empirical Model for State of Charge Estimation Based on E...

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International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

作者： Khaled Ibrahim Silvester Sabathiel Farhan Farooq Günter Hofer Alexander Bergmann Rudolf Heer Electronic Sensors Silicon Austria Labs Graz University of Technology Graz Austria Collaborative Perception and Learning Silicon Austria Labs Graz Austria Electronic Sensors Silicon Austria Labs Graz Austria Infineon Technologies Graz Austria Institute of Electrical Measurement and Sensor Systems Graz University of Technology Graz Austria

ISBN: (数字)9798350373905

ISBN: (纸本)9798350373912

Electrochemical Impedance Spectroscopy (EIS) is an accurate method used to study the internal properties of lithium-ion (Li-ion) battery cells. It is important to accurately estimate the State of Charge (SoC) of Li-ion battery cells for safety and longevity considerations. There are several methods to estimate the SoC; however, accurate methods require a lot of computational resources and increase the system complexity. This paper proposes an EIS-based experimental method for SoC estimation based on calculating the area under the EIS magnitude vs. frequency curve and correlating the result with SoC. The results demonstrate a relationship between the EIS magnitude and the SoCs within a certain range and under specific conditions. Furthermore, the suggested method reduces the errors and eliminates the need for fitting the EIS impedance spectrum for SoC estimation.

关键词： Temperature measurement Lithium-ion batteries Accuracy Impedance measurement Fitting Estimation Frequency measurement State of charge Impedance Electrochemical impedance spectroscopy

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Precise Resonance Frequency Tracking Based on a DSP-Implemented Virtual Vector Voltmeter

Precise Resonance Frequency Tracking Based on a DSP-Implemen...

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IEEE International Symposium on Applications of Ferroelectrics (ISAF)

作者： Jan Helge Dörsam Sven Suppelt Tobias Bossert Alexander A. Altmann Claas Hartmann Christoph Haugwitz Yannick Schroedel Tino Lang Anne Harth Christoph Heyl Mario Kupnik Measurement and Sensor Technology Group Technical University of Darmstadt Germany Deutsches Elektronen-Synchrotron DESY Hamburg Germany Helmholtz Institute Jena Jena Germany GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Center of Optical Technologies Aalen University Aalen Germany

ISBN: (数字)9798350371901

ISBN: (纸本)9798350371918

Maintaining the resonance frequency of high-power ultrasound transducers is essential for applications such as sonochemistry, acoustic levitation and acousto-optic manipulation. This work presents a method to achieve resonance frequency tracking using a digital signal processor (DSP) implemented virtual vector voltmeter (VVV) for accurate phase detection. The system integrates three subsystems: a DSP for signal generation and phase detection, a microcontroller for control algorithms, and a custom PCB for signal amplification and measurement. Phase detection accuracy was evaluated over target phases from -5° to +5° using two bolt-clamped Langevin transducers with resonant frequencies of 28 kHz and 40 kHz, respectively. A 50-minute long-term performance test with the 40 kHz transducer showed phase tracking errors within ±0.35°, with maximum phase measurement uncertainties of ±0.0229° at 28 kHz and ±0.0213° at 40 kHz. These results demonstrate the DSP-implemented VVV’s ability to maintain precise phase tracking and resonance frequency adjustment, ensuring optimal performance in various ultrasound applications.

关键词： Transducers Ultrasonic imaging Accuracy Target tracking Voltmeters Resonant frequency Resonance Vectors Acoustics Frequency control

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Multicomponent force/torque sensor with integrated calibration system 19

Multicomponent force/torque sensor with integrated calibrati...

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19th ITG/GMA-Symposium on sensors and Measuring Systems 2018

作者： Marangoni, Rafael R. Schleichert, Jan Fröhlich, Thomas Technische Universität Ilmenau Institute for Process Measurement and Sensor Technology PF 100565 Ilmenau98684 Germany

ISBN: (纸本)9783800748662

A multicomponent force and torque sensor with integrated calibration capabilities is shown. The system uses the Kibble-balance principle to provide traceable force and torque measurements. This is possible by integrating standards for position, angle, voltage, resistance and time measurement. In this way, calibration operations based on deadweights and the use of local gravity acceleration are avoided. A prototype of the system for measuring forces and torques in a range of ±2 N and ±0.1 N m respectively was implemented. A maximal relative expanded measurement uncertainty (k=2) of 1·10-4 is expected for the force and torque measurements. Experimental results used to calibrate the integrated position/ angle and voltage measuring systems are shown. © VDE VERLAG GMBH · Berlin · Offenbach

关键词： Torque

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Photothermal trace gas measurement with a compact fiber-coupled Fabry–Pérot interferometer

Photothermal trace gas measurement with a compact fiber-coup...

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Optics and Photonics for Sensing the Environment, ES 2020 - Part of Optical sensors and Sensing Congress 2020

作者： Breitegger, Philipp Lang, Benjamin Bergmann, Alexander Institute of Electrical Measurement and Sensor Systems Graz University of Technology Inffeldgasse 10/II Graz8010 Austria

sensors for the reliable measurement of trace gases are of high interest. A compact and robust fiber-coupled Fabry–Pérot interferometer is employed in photothermal spectroscopy to measure nitrogen dioxide concen... 详细信息

ISBN: (纸本)9781557528209

关键词： Gases

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