检索结果-内蒙古大学图书馆

IEEE SSD International Multi-Conference on Systems, Signals and Devices

作者： Sajidah Al-Hammouri Rim Barioul Khaldon Lweesy Mohammed Ibbini Olfa Kanoun Jordan University of Science and Technology Irbid Jordan Professorship of Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany

In recent years, force myography (FMG) is considered a non-invasive method used for the recognition of different gestures such as the American sign language (ASL) by measuring presser changes due to different variations in muscle volume while performing different signs. In this work, only six FSR commercial sensors were inserted to the inner side of a bracelet to be in direct contact with the skin was used to collect the raw FMG signal from 10 healthy subjects with 10 trails. In this paper, an extreme learning machine (ELM) with cross-validation ( Kfold=5) was applied to test the accuracy of using raw FMG signal in comparison with only six time domain extracted features. The results show that the accuracy based on extracting six features was equal to 91.11%, which outperforms the raw FMG signal for gesture recognition where it reached only a testing accuracy of 85.56%.

关键词： Resistors Assistive technology Volume measurement Force Gesture recognition sensor phenomena and characterization Feature extraction

来源：评论

学校读者我要写书评

暂无评论

Bioimpedance Spectroscopy Improves Insulin Absorption measurement Method: A Feasibility In-Vivo Study Based on Saline

Bioimpedance Spectroscopy Improves Insulin Absorption Measur...

引用

Impedance Spectroscopy (IWIS), International Workshop on

作者： Pasquale Arpaia Ornella Cuomo Fortuna Galdieri Olfa Kanoun Francesca Mancino Nicola Moccaldi Hanen Nouri Department of Electrical Engineering and Information Technology (DIETI) University of Naples Federico II Naples Italy Department of Neuroscience and Reproductive and Odontostomatological Sciences University of Naples Federico II Naples Italy Department of Engineering for Innovation University of Salento Lecce Italy Department of Electrical Engineering and Information Technology Chemnitz University of Technology Chemnitz Germany Measurement and Sensor Technology Chemnitz University of Technology Chemnitz Germany

A feasibility of a method based on impedance spectroscopy and equivalent circuit approach to assess insulin bioavailability is realized in-vivo by exploiting a vehicle as insulin emulator. The vehicle bioavailability is indirectly assessed by measuring the local impedance variation due to the drug disappearance from the injection volume. An experimental campaign was carried out on a healthy subject to acquire bioimpedance spectra in the frequency range of [1-100] kHz during controlled administration of vehicle. A modified Tregear’s model is proposed to model the investigated phenomena. In particular, a linear relationship between the resistor used for modelling the hypodermis and the amount of vehicle injected was found. The method based on equivalent circuit exhibited an improvement in sensitivity (70 %) with respect to the approach based on percentage variation of impedance magnitude.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Modelling Propagation Loss of PECVD Silicon Nitride Strip Waveguides: Evaluation and Assessment of Width Dependency

Modelling Propagation Loss of PECVD Silicon Nitride Strip Wa...

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： Anton Buchberger Jozef Pulko Deborah Morecroft Omar Basso Jochen Kraft Alexander Bergmann ams AG Premstaetten Austria Institute of Electrical Measurement and Sensor Systems Graz University of Technology Graz Austria

measurements of the width-dependent propagation loss of 250 nm thick silicon nitride strip waveguides at 850 nm wavelength indicate good agreement with the theoretical model. The waveguides were fabricated by plasma-e... 详细信息

ISBN: (纸本)9781943580910

关键词： Strips Wavelength measurement Waveguide lasers Silicon nitride Waveguide theory Lasers and electrooptics Propagation losses

来源：评论

学校读者我要写书评

暂无评论

Collinear Photothermal Gas Sensing with a Custom-Made Dichroic and Fiber-Coupled Fabry-Pérot Etalon

引用

IEEE sensors Journal 2025年

作者： Tanzer, Manuel Lang, Benjamin Bergmann, Alexander Graz University of Technology Institute of Electrical Measurement and Sensor Systems Inffeldgasse 33I Graz8010 Austria

Here, we present the implementation of a compact, collinear photothermal interferometry configuration for gas sensing based on a custom-made dichroic and fiber-coupled Fabry-Ṕerot etalon. By overcoming the design obstacles imposed by such a configuration, advantage of the strong signal enhancement due to the larger overlap of the pump and probe beam volumes was taken. A competitive NNEA of (Formula presented) and a limit of detection of 38.8 ppmv were achieved. Additionally, the more compact architecture of the sensing unit allows for further miniaturization of photothermal gas sensors. The proposed solution has been fabricated and tested, showing great promise for highly sensitive, selective and miniaturized gas sensors. © 2001-2012 IEEE.

关键词： Fabry-Perot interferometers

来源：评论

学校读者我要写书评

暂无评论

Smart Multi-coil Inductive Power Tranmission with IoT Based Visulization 6

Smart Multi-coil Inductive Power Tranmission with IoT Based ...

引用

6th IEEE World Forum on Internet of Things, WF-IoT 2020

作者： Bouattour, Ghada Hu, Zheng Jmeaa Derbel, Houda Ben Kanoun, Olfa Technische Universität Chemnitz Chair for Measurement and Sensor Technology Chemnitz Germany University of Sfax Department of Electrical Engineering Sfax Tunisia

ISBN: (纸本)9781728155036

Multi-coil inductive power transmission technology has been widely investigated due to their ability to charge devices in large transmission area. In this paper, an implementation of multi-coil inductive power transmission system has been presented. The proposed system is composed by 16 coils organized in 4 columns and 4 rows controlled by switches. A small size sending side circuit is used, which is composed of a singular AC oscillator, power amplifier, resonant compensation capacitor and a passive voltage. This circuit offers a small size electronic parts, simplicity during implementation and low cost. An IoT Android application offers to the user the possibility of tracking the device to be charged on top of multicoil sending inductive power transmission system. A Bluetooth module has been connected to the sending side circuit to establish the communication with the user smartphone. To show the electronic circuit voltages, an LTspice simulation using realistic components has been presented. The proposed multi-coil system with the developed Android App. has been experimentally implemented. © 2020 IEEE.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

VelObPoints: a Neural Network for Vehicle Object Detection and Velocity Estimation for Scanning LiDAR sensors

VelObPoints: a Neural Network for Vehicle Object Detection a...

引用

IEEE sensorS

作者： Lukas Haas Nico Leuze Arsalan Haider Matthias Kuba Thomas Zeh Alfred Schöttl Martin Jakobi Alexander W. Koch Institute for Driver Assistance Systems and Connected Mobility Kempten University of Applied Sciences Germany Institute for Measurement Systems and Sensor Technology Technical University of Munich Germany Institute for Applications of Machine Learning and Intelligent Systems University of Applied Sciences Munich Germany Faculty of Electrical Engineering University of Applied Sciences Kempten Germany

ISBN: (数字)9798350363517

ISBN: (纸本)9798350363524

LiDAR sensors are crucial sensors for highly automated vehicles. Relevant information about the vehicle's sur-roundings can be obtained from 3D point clouds, which serves as a basis for decision-making for further control of the vehicle. For this purpose, information about the type and position of objects in the vehicle's environment and their velocity and movement direction is essential. In this paper, we present VelObPoints, a neural network architecture that estimates the longitudinal and lateral velocity and performs object detection on a single LiDAR point cloud. Compared to existing tracking methods, the neural network allows this information to be extracted from a single LiDAR frame. We propose a simulated dataset for training and testing, containing motion distortion effects. The neural network achieves a mean Intersection over Union of 0.863 and a mean average velocity error of 0.332 m s −l . Based on a single point cloud, this information, consisting of the object's scaling, position, and rotation, as well as its velocities in the longitudinal and lateral directions, is immediately available for the driving function. For subsequent motion prediction, and object tracking, leading to more quickly available velocity and motion direction information and higher redundancy in sensor data fusion.

关键词： Point cloud compression Laser radar Three-dimensional displays Neural networks Data integration sensor fusion Distortion sensor systems sensors Object tracking

来源：评论

学校读者我要写书评

暂无评论

A Polynomial Curve Fitting of Bioimpedance Data for Parameter Estimation of the Cole-Impedance Model

A Polynomial Curve Fitting of Bioimpedance Data for Paramete...

引用

Impedance Spectroscopy (IWIS), International Workshop on

作者： Mitar Simić Todd J. Freeborn Fernando Seoane Olfa Kanoun Faculty of Technical Sciences University of Novi Sad Novi Sad Serbia Department of Electrical and Computer Engineering University of Alabama Tuscaloosa Alabama USA Department of Clinical Science Intervention and Technology Karolinska Institutet Stockholm Sweden Department of Clinical Physiology Karolinska University Hospital Stockholm Sweden Department of Medical Technology Karolinska University Hospital Stockholm Sweden Department of Textile Technology University of Borås Borås Sweden Chair of Measurement and Sensor Technology Chemnitz University of Technology Chemnitz Germany

ISBN: (数字)9798331507626

ISBN: (纸本)9798331507633

The rapid advancements in technology have led to a significant increase in the number of portable and wearable devices, driving the demand for efficient and reliable methods for bioimpedance analysis suitable for compact embedded-hardware platforms. In this paper, a method for complex bioimpedance curve fitting with the second order polynomial is derived and validated with synthetic datasets as well as experimentally obtained bioimpedance. The main advantages are independence of the frequency data (which results in reduction of the dataset by 1/3), and the elimination of dependence on characteristic frequency estimation. More importantly, it is possible to estimate parameters of the Cole-impedance model (R∞, R1 and $a$ ) from obtained polynomial coefficients in a very efficient micro controller-based realization. Raspberry Pi Pico-based execution time was around 9 ms for 256 datapoints, which is more than 1000 times shorter when compared to the relevant references. Moreover, here presented method required 22.05% less flash memory and 43.64% less SRAM. Experimental bioimpedance of human volunteer was obtained using the ImpediMed SFB7 device. Relative deviations of the estimated values of the Cole-impedance model with the proposed method and BioImp software were around 5%. The proposed method's suitability for applications involving portable and cost-effective bioimpedance measurement and processing units was demonstrated by achieving a mean relative deviation of less than 2 % between the fitted and measured bioimpedance of pear slices over a three-hour period.

关键词： Spectroscopy Biological system modeling Bioimpedance Polynomials Frequency estimation Data models Software Curve fitting Wearable devices Synthetic data

来源：评论

学校读者我要写书评

暂无评论

Cole-Cole Bio-Impedance Parameters Estimation From Sinewave Excitation Signal with a Minimum Number of Frequencies

Cole-Cole Bio-Impedance Parameters Estimation From Sinewave ...

引用

Impedance Spectroscopy (IWIS), International Workshop on

作者： Nour Ammar Cherif Ouni Ahmed Yahia Kallel Hanen Nouri Bilel Ben Atitallah Nabil Derbel Olfa Kanoun Measurement and Sensor Technology Faculty of Electrical Engineering and Information Technology Chemnitz University of Technology Chemnitz Germany Control and Energy Management Laboratory National Engineering School of Sfax University of Sfax Sfax Tunisia Laboratory of Signals Systems Artificial Intelligence and Networks Digital Research Centre of Sfax National School of Electronics and Telecommunications of Sfax Technopole of Sfax Ons City Tunisia

Cole-Cole impedance model is widely used in electrical bioimpedance measurements to characterize biological tissues. Accurate estimation of the Cole-Cole impedance parameters is crucial in bioimpedance measurements to obtain reliable results. Many studies have proposed approaches to estimate the Cole-Cole impedance parameters with high accuracy and minimal error. However, there is still a need to investigate the minimum number and positions of frequencies required to accurately estimate the Cole-Cole impedance parameters and, thus, efficiently reconstruct the impedance spectrum. This paper proposes a novel approach to reconstruct Cole-Cole bioimpedance parameters using a minimum number of frequencies. The study utilizes an IV method-based system implemented on an STM32 platform to perform impedance measurements. The results obtained from this system are compared with those obtained from a commercial impedance analyzer, Agilent 4294A, in the frequency range of 1 kHz to 1 MHz. After applying nonlinear least squares fitting, the results of two and three impedance measurement frequencies showed that selecting certain positions significantly affects the accuracy. Using three frequencies, including the extreme points and an additional point in the high-frequency range, gave better results with 0.56%. The results described here may be useful in other implementations of impedance spectroscopy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Comparative Study of Lead-free Ferroelectric Nanoparticles to Boost the Performance of Flexible Nanogenerators

Comparative Study of Lead-free Ferroelectric Nanoparticles t...

引用

Impedance Spectroscopy (IWIS), International Workshop on

作者： Khawla Jeder Ayda Bouhamed Amina Ben Ayed Hanen Nouri Hamadi Khemakhem Olfa Kanoun Laboratory of multifunctional materials and application (LaMMA) Faculty of sciences of Sfax University of Sfax Sfax Tunisia Professorship of Measurement and Sensor Technology Chemnitz Germany Professorship of Measurement and Sensor Technology Chemnitz University of Technology Chemnitz Germany Faculty of sciences of Sfax University of Sfax Sfax Tunisia Chemnitz University of Technology Chemnitz Germany

Due to its excellent piezoelectric, ferroelectric and dielectric properties, lead-free ceramic BaTiO3 has attracted much attention for the production of nanogenerator materials. In the present paper, lead-free piezoelectric materials (Ba, Ca)(Zr, Ti)O 3 was synthesized by the sol-gel method. In addition, Ca 2+ and Zr 4 + were substituted into the BaTiO3 crystal lattice to replace Ba 2+ and Ti 4+ , respectively, to enhance the material properties. Subsequently, the ((Ba, Ca)(Zr, Ti)O 3 powders were firstly mixed with poly(vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP) to prepare nanocomposite films. The performance of the fabricated nanocomposites was studied using both impedance and piezoelectric measurements. In this work, a maximum output voltage (∼1.8 V) and power density $(\sim 1.9\ \mu \mathrm{W}/\text{cm}^{3})$ were achieved for the composite incorporating BCZT particles. These results demonstrate the advantage of doping A and B sites for improving the piezoelectric performance.

关键词： Nanoparticles Spectroscopy Power system measurements Barium Powders Doping Production

来源：评论

学校读者我要写书评

暂无评论

A Double Node Thin-Film Thermocouples for In-Situ measurement

A Double Node Thin-Film Thermocouples for In-Situ Measuremen...

引用

Automation, Robotics and Computer Engineering (ICARCE), International Conference on

作者： Rong Ma Meiju Zhang Zhongkai Zhang Manguo Huang Xiaobo Liang Jiangjiang Liu Zhaojun Liu Bian Tian State Key Laboratory for Mechanical Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an China Beijing Changcheng Aeronautic Measurement and Control Technology Research Institute Aviation Key Laboratory of Science and Technology on Special Condition Monitoring Sensor Technology Beijing China

ISBN: (纸本)9781665475495

The design, fabrication, testing and implementation of a new high-performance tungsten-rhenium thin film thermocouple are introduced. In this paper, tungsten-rhenium TFTCs are taken as the research object, after simulation analysis in COMSOL software and design, it is made by screen-printing technology and magnetron sputtering. This kind of thin film thermocouple primarily utilizes two kinds of electrode materials with varying composition combination, mainly tungsten with 5% rhenium and tungsten with 26% rhenium. Furthermore, high-temperature annealing is performed to maintain the mechanical properties and thus improve thermoelectric performance. The results demonstrate that the performance is reliable in the temperature range of 150-600 C° with a repeatability of 2.02%, providing application value for high-temperature in-situ sensing.

关键词： Temperature measurement Temperature distribution Thermocouples Tungsten Robot sensing systems Software sensors

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：