2021 International Workshop on Impedance Spectroscopy (IWIS)最新文献_第2页

Investigation and Implementation of Elastomer Filament Strain Sensors for Monitoring of Hand Gestures 用于手势监测的弹性体丝应变传感器的研究与实现

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711913

J. R. Bautista-Quijano, Kaiss Ghrairi, Bilel Ben Atitallah, O. Kanoun

{"title":"Investigation and Implementation of Elastomer Filament Strain Sensors for Monitoring of Hand Gestures","authors":"J. R. Bautista-Quijano, Kaiss Ghrairi, Bilel Ben Atitallah, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711913","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711913","url":null,"abstract":"The recognition of human gestures in real-time using body attached sensors has brought attention in recent years due to the manifold potential applications. The implemented sensors must be flexible, easy to adapt to bodily parts, highly sensitive and biocompatible. In this work a novel strain sensor is investigated which is based on a conductive thermoplastic polyurethane (CTPU) blended with a biocompatible soft thermoplastic polyurethane polymer (STPU). The sensor shows a high capability to transfer the mechanical deformation into an electrical response with high sensitivity. An investigation of the sensing properties using different mixture percentage of STPU/CTPU starting from 10/0 to 0/10 is carried out. The sensing behavior is characterized based on several mechanical and electrical properties e.g. stretchability, sensitivity, linearity, repeatability and hysteresis. The composition STPU/CTPU 7/3 showed a better performance compared to other studied compositions, where the elastic zone estimated was ∼13 (linearity = 0.98 within elastic zone) and 39 of sensitivity. The mentioned sensor's response demonstrates high repeatability and low hysteresis effect. Finally, the selected sensor composition was attached to a glove where the movement of a finger was successfully tracked.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133988655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Comparative Study of Lead-free Ferroelectric Nanoparticles to Boost the Performance of Flexible Nanogenerators 提高柔性纳米发电机性能的无铅铁电纳米粒子的比较研究

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711874

Khawla Jeder, A. Bouhamed, Amina Ben Ayed, Hanen Nouri, H. Khemakhem, O. Kanoun

引用次数: 0

Regularized Linear Kramers-Kronig Transform for Consistency Check of Noisy Impedance Spectra with Logarithmic Frequency Distribution 对数频率分布噪声阻抗谱一致性检验的正则线性Kramers-Kronig变换

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711895

Ahmed Yahia Kallel, O. Kanoun

{"title":"Regularized Linear Kramers-Kronig Transform for Consistency Check of Noisy Impedance Spectra with Logarithmic Frequency Distribution","authors":"Ahmed Yahia Kallel, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711895","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711895","url":null,"abstract":"Measured impedance spectra can be noisy or can be affected by artifacts due to system nonlinearity or instability. Methods, such as the Linear Kramers-Kronig help to check consistency of measurements, but have massive problems with noisy spectra. Filtering or averaging, which are often used for noise reduction, are not always efficient. They lead, in some cases, in impedance spectra, which are still noisy or having blurred features or oscillating due to over-correction. In this paper, we propose a Tikhonov regularized linear Kramers-Kronig transform (LKK) for checking consistency and correct noisy impedance spectra. The proposed method introduces damped weights bias [1] to regularize the inverse problem related to the parameter extraction for the Voigt model building the basis for the LKK. This results in a Kramers-Kronig-compliant, corrected, impedance spectrum with significantly reduced noise effects. Applied on a measured noisy RC impedance spectrum, as example, and and an impedance spectrum of lithium-ion battery. The proposed method reduces measurement deviation from a RMSE of $35 Omega$ to a RMSE of $14 Omega$.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"16 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134120692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Oxygen Transport Impedance in a Polymer Electrolyte Membrane Fuel Cell Equivalent Electrical Circuit 聚合物电解质膜燃料电池等效电路中的氧传输阻抗

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711832

William Aït-Idir, S. Touhami, Meriem Daoudi, J. Dillet, J. Mainka, O. Lottin

{"title":"Oxygen Transport Impedance in a Polymer Electrolyte Membrane Fuel Cell Equivalent Electrical Circuit","authors":"William Aït-Idir, S. Touhami, Meriem Daoudi, J. Dillet, J. Mainka, O. Lottin","doi":"10.1109/IWIS54661.2021.9711832","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711832","url":null,"abstract":"One common way to interpret the data of Electrochemical Impedance Spectroscopy (EIS) with Polymer Exchange Membrane Fuel Cells (PEMFC) consists in using an Equivalent Electrical Circuit (EEC). There are however various issues in EEC modeling, among which the location and expression of the oxygen transport impedance. In this work, we compare the results obtained using a Randles circuit with those of an EEC where the oxygen diffusion impedance is connected in series with the circuit of the Cathode Catalyst Layer (CCL). In the Randles circuit, the oxygen transport impedance is in series with the charge transfer resistance of the Oxygen Reduction Reaction (ORR), implying that the CCL (pores and/or ionomer) is governing oxygen diffusion. In the other case, the oxygen diffusion impedance is outside of the CCL circuit, which implicates that the Gas Diffusion Layer (GDL) governs oxygen diffusion. In addition, two expressions of the GDL oxygen diffusion impedance were tested: the usual finite Warburg impedance and an alternative expression derived by Kulikovsky that considers the impact of the double-layer capacity on oxygen concentration at the CCL/GDL interface. The parameters obtained with these EEC are used to estimate the main characteristic diffusion length, for various cells and operating conditions. The same trend was observed in all cases: the values of the characteristic diffusion length are found to be of the order of the GDL thickness.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128332770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Crest-Factor Optimization Algorithm for Multisine Signals based on the Evolutionary Role Playing Game Theory 基于进化角色扮演博弈论的多正弦信号波峰因子优化算法

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711767

Ahmed Yahia Kallel, O. Kanoun

引用次数: 1

Comparative Study of Optimization Methods Proposed for the Extreme Learning Machine (ELM) 极限学习机(ELM)优化方法比较研究

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711902

Tayssir Chouikh, Hiba Hellara, Rim Barioul, Faten Sandid, O. Kanoun

{"title":"Comparative Study of Optimization Methods Proposed for the Extreme Learning Machine (ELM)","authors":"Tayssir Chouikh, Hiba Hellara, Rim Barioul, Faten Sandid, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711902","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711902","url":null,"abstract":"The Extreme Learning Machine (ELM) is a learning algorithm used for training a single hidden layer feed-forward neural network (SLFN). It leads to a better generalization performance and fast learning speed and many more advantageous properties. The first step of an ELM is to assign random values to the input weights and biases. Then it will determine the output weights in a single step using the generalized Moore-Penrose method. The random initialization of weights and biases and a large number of hidden nodes can affect the performance of the ELM. Several optimizers were proposed aiming to increase generalization performance and produce more compact networks. This paper presents a comparative study of ELM optimization in the state of the art using existing algorithms namely Optimally Pruned ELM (OP-ELM), Grey Wolf Optimizer (GWO), Salp Swarm Algorithm (SSA), Bat Algorithm (BA), and Particle Swarm Optimization (PSO) which are swarm intelligence-based ELMs. Also Genetic Pruning Algorithm (GPA) and Enhanced Genetic Algorithm (EGA) which are pruning methods using evolutionary algorithms. Results prove that SSA-ELM improves the accuracy in most benchmark datasets and shows better results than the other comparing methods while OP-ELM gives the most compact model with a high level of accuracy.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122413906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Epileptic Seizure Motion Classification based on sEMG and Artificial Neural Network 基于表面肌电和人工神经网络的癫痫发作运动分类

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711793

Achraf Djemal, D. Bouchaala, A. Fakhfakh, O. Kanoun

{"title":"Epileptic Seizure Motion Classification based on sEMG and Artificial Neural Network","authors":"Achraf Djemal, D. Bouchaala, A. Fakhfakh, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711793","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711793","url":null,"abstract":"According to the World Health Organization (WHO), 70% of all epileptic seizures are convulsive, making the EMG signal one of the essential signals used for epilepsy treatment. Nevertheless, epileptic seizure classification remains a challenge. Suitable machine learning classifiers and features are the critical metrics for good performance. In this paper, a collection of widely used time-domain features of surface electromyography (sEMG) signals is illustrated and an investigation of their ability to distinguish epileptic seizures is reported for five subjects performing myoclonic and tonic seizures using eight sEMG sensors placed on different muscles: Biceps brachii, flexor carpi ulnaris, gastrocnemius, and quadriceps. Feature selection step is required to eliminate information redundancy and irrelevant before epileptic seizure classification. The results show that extracting Waveform Length, Integrated EMG, Variance, Shannon Entropy, Complexity, Skewness, and Root Mean Square values are more significant for myoclonic-tonic seizure classification based on sEMG signal analysis. Selected features have been subjected to the Artificial Neural Network classifier. An overall epileptic seizure accuracy of 96% could be achieved by the ANN algorithm based on seven selected features.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115735728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

High Frequency Impedance Spectroscopy for Biotechnological Applications 高频阻抗谱在生物技术中的应用

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711786

Y. Zaikou, T. Nacke, U. Pliquett

引用次数: 0

Early Altered Cells Health Status Detection via Label Free Impedance and Broadband dielectric Spectroscopy 通过无标签阻抗和宽带介电光谱检测早期改变的细胞健康状态

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711769

M. Ambrico, M. Lasalvia, T. Ligonzo, P. Ambrico, G. Perna, V. Capozzi

引用次数: 0

Cole-Cole Parameter Extraction from Electrical Impedance Spectroscopy for Real-time Monitoring of Vegetal Tissue: Case Study with a Single Celery Stalk 基于电阻抗光谱的Cole-Cole参数提取用于植物组织的实时监测:以一根芹菜茎为例

2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711854

Soufiane Aouane, R. Claverie, D. Técher, I. Durickovic, Lionel Rousseau, P. Poulichet, O. Français

引用次数: 1