Proceedings of 7th International Electronic Conference on Sensors and Applications最新文献_第3页

Evaluation of Feature Selection Techniques in a Multifrequency Large Amplitude Pulse Voltammetric Electronic Tongue 多频大幅度脉冲伏安电子舌特征选择技术评价

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08242

Luis F. Villamil-Cubillos, Jersson X. Leon-Medina, Maribel Anaya, D. Tibaduiza

{"title":"Evaluation of Feature Selection Techniques in a Multifrequency Large Amplitude Pulse Voltammetric Electronic Tongue","authors":"Luis F. Villamil-Cubillos, Jersson X. Leon-Medina, Maribel Anaya, D. Tibaduiza","doi":"10.3390/ecsa-7-08242","DOIUrl":"https://doi.org/10.3390/ecsa-7-08242","url":null,"abstract":"An electronic tongue is a device composed of a sensor array that takes advantage of the cross sensitivity property of several sensors to perform classification and quantification in liquid substances. In practice, electronic tongues generate a large amount of information that needs to be correctly analyzed, to define which interactions and features are more relevant to distinguish one substance from another. This work focuses on implementing and validating feature selection methodologies in the liquid classification process of a multifrequency large amplitude pulse voltammetric (MLAPV) electronic tongue. Multi-layer perceptron neural network (MLP NN) and support vector machine (SVM) were used as supervised machine learning classifiers. Different feature selection techniques were used, such as Variance filter, ANOVA F-value, Recursive Feature Elimination and model-based selection. Both 5-fold Cross validation and GridSearchCV were used in order to evaluate the performance of the feature selection methodology by testing various configurations and determining the best one. The methodology was validated in an imbalanced MLAPV electronic tongue dataset of 13 different liquid substances, reaching a 93.85% of classification accuracy.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114742138","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

Low-Cost Cloud Enabled Wireless Monitoring System for Linear Fresnel Solar Plants 线性菲涅耳太阳能电站的低成本云无线监测系统

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08173

R. Meligy, P. López-Iturri, J. J. Astrain, I. Picallo, H. Klaina, M. Rady, F. Paredes, F. Montagnino, A. Alejos, F. Falcone

{"title":"Low-Cost Cloud Enabled Wireless Monitoring System for Linear Fresnel Solar Plants","authors":"R. Meligy, P. López-Iturri, J. J. Astrain, I. Picallo, H. Klaina, M. Rady, F. Paredes, F. Montagnino, A. Alejos, F. Falcone","doi":"10.3390/ecsa-7-08173","DOIUrl":"https://doi.org/10.3390/ecsa-7-08173","url":null,"abstract":"This paper presents the design of a cost-effective online wireless monitoring system for two linear Fresnel reflector (LFR) solar plants located in two different countries. The first LFR plant is installed in the SEKEM medical center near Belbis city, Egypt, while the second is installed in the campus of the University of Palermo, Italy. The proposed system is a standalone system that reduces the interaction of labor as it offers online wireless monitoring for important parameters of the LFR such as solar irradiance, ambient temperature, outlet and inlet collector temperature and heat transfer fluid flow. For that purpose, a wireless sensor network (WSN) based on Arduino Mega boards coupled with XBee modules are used. The ZigBee XBee modules operate at 2.4 GHz, which have the advantages of being low cost and relatively low power consumption. The wireless nodes are supplied by solar paneled power banks, and send the data to a cloud in order to monitor both LFR plants remotely. The proposed system has been implemented and tested successfully before the future deployment on the LFR plants.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117333465","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

A time series autoencoder for load identification via dimensionality reduction of sensor recordings 一种时间序列自编码器，通过降低传感器记录的维数来识别负载

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08255

Luca Rosafalco, A. Manzoni, A. Corigliano, S. Mariani

{"title":"A time series autoencoder for load identification via dimensionality reduction of sensor recordings","authors":"Luca Rosafalco, A. Manzoni, A. Corigliano, S. Mariani","doi":"10.3390/ecsa-7-08255","DOIUrl":"https://doi.org/10.3390/ecsa-7-08255","url":null,"abstract":"Current progress in sensor technology is setting the ground to push toward satisfactory solutions to challenging engineering problems, like e.g., system identification and Structural Health Monitoring (SHM). In civil engineering, SHM is often based on the analysis of vibrational recordings, represented by time histories of displacements and/or accelerations, collected through pervasive sensor networks and shaped as Multivariate Time Series (MTS). Despite the great advances in soft computing techniques such as neural networks, inverse problems featuring regression tasks on raw vibrational measurements are still challenging. Developing dimensionality reduction tools, able to infer complex correlations within and across the recorded time series, is then of paramount importance. In this work, we designed an AutoEncoder (AE) capable of condensing MTS-shaped data in a reduced format featuring a few latent variables only. The obtained reduced data representation enhances the solution of inverse problems, like e.g., the identification of the parameters governing the dynamic load applied to a structural system. Numerical examples, aimed at the identification of the loading conditions on a shear-type building, are reported to assess the effectiveness of the proposed procedure.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124764476","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

Inkjet-Printed Flexible Temperature Sensor Based on Silver Nanoparticles Ink 基于银纳米颗粒油墨的喷墨印刷柔性温度传感器

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08216

Q. J. Liew, A. Aziz, Hing Wah Lee, Mai Woon Lee, H. F. Hawari, M. Khir

引用次数: 7

Enhancement of Power Quality Using Voltage and Hall Effect Current Sensors Applied on Controlled Single-Phase Active Power Filter. 电压和霍尔效应电流传感器在受控单相有源电力滤波器上的应用提高电能质量。

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08212

F. Barnabé, M. Rocha, G. Clerice

{"title":"Enhancement of Power Quality Using Voltage and Hall Effect Current Sensors Applied on Controlled Single-Phase Active Power Filter.","authors":"F. Barnabé, M. Rocha, G. Clerice","doi":"10.3390/ecsa-7-08212","DOIUrl":"https://doi.org/10.3390/ecsa-7-08212","url":null,"abstract":"Switched-mode power supply and semiconductor devices have been gaining more and more applicability in the industrial scenario. With the massive use of these devices, several problems related to power quality and equipment degradation have been arising, caused mainly by the harmonic content present in current and voltage. Power quality problems have direct implications for business productivity, causing high economic losses. Therefore, it is mandatory to develop solutions that mitigate these problems. Active power filters (APF) are power electronic equipment capable of compensating power quality problems. Moreover, it presents the ability to dynamically adjust their modes of operation in response to changes in load or the power systems. Active power filters present the economical advantage of using the same current and voltage sensors already existing in a power system. Aiming to develop an APF for single-phase applications, this work proposes a shunt controlled active power filter using hall effect current and voltage sensor, aiming to compensate harmonic currents provided by nonlinear loads. It was proposed two proportional-integral compensators, where the external loop is responsible for link-CC control and the inner loop is responsible for current compensation. The results show the applicability of the proposed APF, since all harmonic content was filtered.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127510777","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 Combined Model-Order Reduction and Deep Learning Approach for Structural Health Monitoring Under Varying Operational and Environmental Conditions 一种结合模型阶数约简和深度学习的结构健康监测方法

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08258

Matteo Torzoni, Luca Rosafalco, A. Manzoni

{"title":"A Combined Model-Order Reduction and Deep Learning Approach for Structural Health Monitoring Under Varying Operational and Environmental Conditions","authors":"Matteo Torzoni, Luca Rosafalco, A. Manzoni","doi":"10.3390/ecsa-7-08258","DOIUrl":"https://doi.org/10.3390/ecsa-7-08258","url":null,"abstract":"The aging, deterioration and failure of civil structures are nowadays challenges of paramount importance, increasingly motivating the search of advanced Structural Health Monitoring (SHM) tools. In this work, we propose a SHM strategy for real time structural damage detection and localization, combining Deep Learning (DL) and Model-Order Reduction (MOR). The developed data-based procedure is driven by the analysis of vibration and temperature recordings, shaped as multivariate time series and collected on the fly through pervasive sensor networks. Damage detection and localization are treated as a supervised classification task considering a finite number of predefined damage scenarios. During a preliminary offline phase, for each damage scenario, a collection of synthetic structural responses and temperature distributions is numerically generated through a physics-based model. Several loading and thermal conditions are considered thanks to a suitable parametrization of the problem, which controls the dependency of the model on operational and environmental conditions. Because of the huge amount of model evaluations, required by the construction of a dataset such as to guarantee a good enough exploration of the parametric space, MOR techniques are employed to relieve the computational burden of the procedure. Finally, a DL network, featuring a stack of convolutional layers, is trained by assimilating both the vibrational and thermal data. During the online phase, the trained DL network processes new experimental recordings to classify the actual state of the structure, and thus providing information about the presence and the localization of the damage, if any. Numerical performances of the proposed approach are assessed through a numerical example involving the monitoring of a two-storey frame under low intensity seismic excitation.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126715959","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: 6

Analysis, Design and Practical Validation of an Augmented Reality Teaching System Based on Microsoft HoloLens 2 and Edge Computing 基于Microsoft HoloLens 2和边缘计算的增强现实教学系统分析、设计与实践验证

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08210

A. Vidal-Balea, Ó. Blanco-Novoa, Imanol Picallo-Guembe, M. Celaya-Echarri, P. Fraga-Lamas, P. López-Iturri, L. Azpilicueta, F. Falcone, T. Fernández-Caramés

{"title":"Analysis, Design and Practical Validation of an Augmented Reality Teaching System Based on Microsoft HoloLens 2 and Edge Computing","authors":"A. Vidal-Balea, Ó. Blanco-Novoa, Imanol Picallo-Guembe, M. Celaya-Echarri, P. Fraga-Lamas, P. López-Iturri, L. Azpilicueta, F. Falcone, T. Fernández-Caramés","doi":"10.3390/ecsa-7-08210","DOIUrl":"https://doi.org/10.3390/ecsa-7-08210","url":null,"abstract":"In recent years, the education sector has incorporated the use of new technologies and computing devices into classrooms, which allowed for implementing new ways for enhancing teaching and learning. One of these new technologies is augmented reality (AR), which enables creating experiences that mix reality and virtual elements in an attractive and visual way, thus helping teachers to foster student interest in learning certain subjects and abstract concepts in novel visual ways. This paper proposes to harness the potential of the latest AR devices in order to enable giving AR-enabled lectures and hands-on labs. Specifically, it proposes an architecture for providing low-latency AR education services in a classroom or a laboratory. Such a low latency is achieved thanks to the use of edge computing devices, which offload the cloud from the traditional tasks that are required by dynamic AR applications (e.g., near real-time data processing, communications among AR devices). Depending on the specific AR application and the number of users, the wireless link (usually WiFi) could be overloaded if the network has not been properly designed, and the overall performance of the application can be compromised, leading to high latency and even to wireless communication failure. In order to tackle this issue, radio channel measurements and simulation results have been performed by means of an in-house developed 3D ray-launching tool, which is able to model and simulate the behaviour of an AR-enabled classroom/laboratory in terms of radio propagation and quality of service. To corroborate the obtained theoretical results, a Microsoft HoloLens 2 teaching application was devised and tested, thus demonstrating the feasibility of the proposed approach.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127226987","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: 12

Morphological study of insect Mechanoreceptors to develop Artificial Bio-inspired mechanosensors 昆虫机械感受器形态学研究开发人工仿生机械感受器

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ECSA-7-08199

Shashikanth Chakilam, Dan Li, Z. Xi, R. Gaidys, Audrone Lupeikiene

{"title":"Morphological study of insect Mechanoreceptors to develop Artificial Bio-inspired mechanosensors","authors":"Shashikanth Chakilam, Dan Li, Z. Xi, R. Gaidys, Audrone Lupeikiene","doi":"10.3390/ECSA-7-08199","DOIUrl":"https://doi.org/10.3390/ECSA-7-08199","url":null,"abstract":"Mechanoreceptors of the insect play a vital role for the insect to sense and monitor the environmental parameters, like flow, tactile pressure, etc. This paper presents the studies made on the morphology of the mechanoreceptor of the insect Blattella asahinai (scientific name of cockroach) that is a hair-like structure known as trichoid sensilla, by scanning electron microscope and confocal laser microscope. The scanned images show the details of sensilla components in which the hair is embedded in the sockets, which are connected with the cuticle and joint membrane, where the dendrite touches at the base of the hair passing through the cuticle layers. The images also show that the tubular bodies and microtubules are tightly compacted inside the dendrite. This paper presents the details of how the sensilla work when an external stimulus act on them. The hair deflects with the disturbance of the cuticle and joint membrane, and this deformed hair leans on the dendrite, which is attached at the base of the hair that in turn presses the tubular bodies and microtubules, which develop negative ions passing down through the dendrite to the neuron, which provides information as an electric signal to the brain of the insect so that it responds for necessary action. Based on the morphological studies, sensing mechanism, material properties of the components, and design principles will be evolved for the development of an artificial bio-inspired sensor. A solid works model of the sensilla is also presented.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132022023","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: 5

Design and simulation of Point of Care microfluidic device for acoustic blood cell separation 点式微流体声学血细胞分离装置的设计与仿真

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08221

F. Sharifi, A. Sedighi, M. Rehman

{"title":"Design and simulation of Point of Care microfluidic device for acoustic blood cell separation","authors":"F. Sharifi, A. Sedighi, M. Rehman","doi":"10.3390/ecsa-7-08221","DOIUrl":"https://doi.org/10.3390/ecsa-7-08221","url":null,"abstract":"Hematology tests, considered as an initial step in the patient diagnostic process, require laboratory equipment and technicians which is a time- and labor-consuming procedure. Such facilities may be available in a few central laboratories in under-resourced countries. The growing need for low cost and rapid diagnostic tests contributes to point-of-care (POC) medical diagnostic devices providing convenient and rapid test tools particularly in areas with limited medical resources. In the present study, a comprehensive numerical simulation of a POC blood cell separation device (POC-BCS) has been modeled using a finite element method. Tag-less separation of blood cells, i.e., platelets, red blood cells, and white blood cells, was carried out using standing surface acoustic waves (SSAWs) generated by interdigital transducers (IDTs) located at lateral sides of the microfluidic channel. Blood sample intake along with sheath flow was introduced via two symmetrical tilted angle inlets and a middle inlet, respectively. Superposition of acoustic radiation force applied by SSAWs accompanied by drag force caused by medium flow drove the blood cells toward different path lines correlated to their size. White blood cells were sorted out in the middle outlet and red blood cells and platelets were sorted out through the separate locations of the side outlets. Each cell was then guided to their respected visualization chamber for further image processing analysis. The results of the presented numerical study would be very promising in designing and optimizing the POC blood testing device.","PeriodicalId":270652,"journal":{"name":"Proceedings of 7th International Electronic Conference on Sensors and Applications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129581461","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

Multimodal stimulation system to control fibroblast proliferation using optical and ultrasonic stimulation 利用光学和超声刺激控制成纤维细胞增殖的多模态刺激系统

Proceedings of 7th International Electronic Conference on Sensors and Applications Pub Date : 2020-11-14 DOI: 10.3390/ecsa-7-08163

D. An, S. Choe

引用次数: 1