Matheus Souza, V. Brusamarello, E. Carvalho, Stéphane Carvalho, J. Carvalho, Frederico Oliveira
{"title":"A Novel Approach to Assessing Crop Health by Electrical Impedance Spectroscopy","authors":"Matheus Souza, V. Brusamarello, E. Carvalho, Stéphane Carvalho, J. Carvalho, Frederico Oliveira","doi":"10.1109/INSCIT55544.2022.9913751","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913751","url":null,"abstract":"Plant disease detection plays a crucial role in global agricultural production due to large losses in production caused by diseases. Thus, several approaches have been developed to detect diseases in plants at the initial stage of infection. In particular, a promising technique for the diagnosis of plant diseases at an early stage is Electrical Impedance Spectroscopy (EIS). However, despite the potential for early disease detection, EIS is sensitive to environmental variables, including temperature, moisture, and solar irradiation. This paper presents a novel approach to EIS measurements aiming to circumvent its sensitivity to environmental variables. The proposed approach consists of distributing an EIS sensors network throughout the crop including the spatial dimension in the measurement system. The results show the proposed approach has the potential to circumvent the EIS measurement sensitivity to environmental variables.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126443075","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}
Hugo B. S. Araujo, Rubens M. B. da S. Lima, Adna K. S. da Silva, C. P. de Souza
{"title":"A Performance Analysis of Reconstruction Algorithms for an Analog-to-Information Converter Architecture","authors":"Hugo B. S. Araujo, Rubens M. B. da S. Lima, Adna K. S. da Silva, C. P. de Souza","doi":"10.1109/INSCIT55544.2022.9913759","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913759","url":null,"abstract":"Compressed Sensing (CS) is a technique that allows the sampling of sparse signals with sub-Nyquist sampling rates. A device that implements the CS technique is the Analog-to-Information Converter (AIC), which compresses the input signal while sampling it. This paper presents CS principles and performance analysis of different reconstruction algorithms for a dual-tone sine signal applied to an adapted version of the Random Modulation Pre-Integrator (RMPI) AIC.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134126809","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}
Felipe Olivera Fernandes, E. Martins, M.T.C. de Andrade
{"title":"Hybrid Integrator Topology with Digital Input Control and Analog Signal Processing","authors":"Felipe Olivera Fernandes, E. Martins, M.T.C. de Andrade","doi":"10.1109/INSCIT55544.2022.9913760","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913760","url":null,"abstract":"In this paper, an Analog-Digital integrator topology with selecting the input by gain control and analog processing, for use in general-purpose computers is intended. The integration function, control and of inputs variables condition were performed through development of analog-digital integrator circuits. The results showed that the topology is flexible in real-time simulation and has good integration results in the tested conditions. The gain control architecture is a new way to control the input and the flexibility of the integrator.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417730","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}
{"title":"Evaluation of a Wireless Power Transfer System with Helmholtz and 3D coils for Biomedical Capsules","authors":"Jeferson Magnaguagno, F. L. Bertotti","doi":"10.1109/inscit55544.2022.9913756","DOIUrl":"https://doi.org/10.1109/inscit55544.2022.9913756","url":null,"abstract":"Wireless Power Transfer (WPT) systems are commonly found in battery charging solutions for electronic devices such as smartphones and tablets. In medicine, they are applied in biotelemetry systems with implantable units and in capsules to monitor parameters of the gastrointestinal tract. Several studies explored WPT systems with inductive links formed by two or more coils. However, few studies have considered inductive links with Helmholtz coils for application in capsules. This paper presents the development of a prototype of a WPT system suitable for monitoring capsules formed by live coils, three of which are a set of 3D receiver coils. The development of a class E amplifier allowed the power delivery to the link. In the experiments performed, the maximum energy (power) received in the load was 662.2 mW for the closest distance between transmitter and receiver coils, while the efficiency reached 3.31 %. Furthermore, the maximum achieved distance that maintained the regulated 3.3 Vcc power supply at load was 240 mm, even with changes in the orientation of the set of 3D receiver coils.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124862733","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}
Stéphane Carvalho, Matheus Souza, V. Brusamarello, Tawan Chrysther dos Santos, Elyson A. N. Carvalho, J. Carvalho, R. Freire
{"title":"Plant Health Evaluation Based on Bioimpedance Phase Measurement","authors":"Stéphane Carvalho, Matheus Souza, V. Brusamarello, Tawan Chrysther dos Santos, Elyson A. N. Carvalho, J. Carvalho, R. Freire","doi":"10.1109/INSCIT55544.2022.9913764","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913764","url":null,"abstract":"Crop diseases and pest infestation are one of the main causes of economic losses in the agriculture business and reduction in food production. In this context, the application of techniques for early diagnosis of crop health has been widely reported in recent literature and Electrical Impedance Spectroscopy (EIS) has been shown as a powerful tool. However, despite the EIS is the technique with the greatest potential to detect stresses in the initial stage, there are two main limitations that hinder the application of this technique: the sensitivity to environmental factors and the difficulty in classifying different types of stress. So, in this paper we propose a simple way of detecting plant stress through EIS from the analysis of the electrical model of plant tissue, measuring only one parameter (phase) of the bioimpedance. The results show that is possible to use single information, the phase change, and a particular range or even a fixed frequency, instead of dealing with a wide frequency range and several types of measurements simultaneously.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114284229","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}
S. Grazioso, A. Tedesco, R. Sabella, Salvatore Fusco, M. Selvaggio, Luigi Duraccio, E. De Benedetto, A. Lanzotti, D. Dallet, L. Angrisani
{"title":"Soft Growing Robot to Enable Monitoring Applications in Remote Constrained Environments","authors":"S. Grazioso, A. Tedesco, R. Sabella, Salvatore Fusco, M. Selvaggio, Luigi Duraccio, E. De Benedetto, A. Lanzotti, D. Dallet, L. Angrisani","doi":"10.1109/INSCIT55544.2022.9913747","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913747","url":null,"abstract":"Soft continuum robots are a new class of robotic devices, which are very promising for enabling measurement applications especially in remote, difficult-to-reach environments. In this work, we propose the use of a particular soft robot, which is able to evert and steer from the tip, as a sensor delivery system. The measurement system consists of two major sections: i) the robotic platform for movement purposes; and ii) the sensing part (i.e., a sensor attached to its tip to enable the measurement). As a case study of the use of the soft-growing robot as a sensor-delivery system, the transportation of a wireless temperature sensor towards a remote hot source was considered. The preliminary results anticipate the suitability of soft continuum robotic platforms for remote applications in confined and constrained environments.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"17 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125785183","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}
{"title":"A LabVIEW application for the characterization of high-frequency resonant sensors using a software-defined radio platform","authors":"Heron E. L. Avila, R. A. Romero Antayhua","doi":"10.1109/INSCIT55544.2022.9913755","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913755","url":null,"abstract":"Microwave resonant sensors have been extensively employed in a wide range of applications. This sensor is generally used to infer a specific parameter of interest by means of its resonance frequency, and it is designed taking into account the boundary conditions of each application. After the implementation, a Vector Network Analyzer (VNA) is generally used to validate and compare the simulated and experimental results. VNAs are ex-pensive instruments, hence, low-cost alternatives, such as portable VNAs, can also be used, although these instruments generally run over limited applications. On the other hand, Software-Defined Radio (SDR) platforms have been used in several applications, beyond their common employment in communication systems. In this work is presented a detailed procedure to implement a LabVIEW application for the characterization of high-frequency resonant sensors using an SDR platform. The application was able to extract the magnitude and phase information from a resonant cavity sensor, demonstrating that it can also serve as a basis for the implementation of more sophisticated routines, with few modifications.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129199395","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}
José Hélio Bento Da Silva, Lucas Dantas de Oliveira, J. Villanueva
{"title":"Application of Wavelet Transform for Ultrasonic Time of Flight Estimation","authors":"José Hélio Bento Da Silva, Lucas Dantas de Oliveira, J. Villanueva","doi":"10.1109/INSCIT55544.2022.9913752","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913752","url":null,"abstract":"The measurement of wind speed is a key issue for the optimization of energy generation in wind farms. Currently, there are numerous ways to perform its estimation, however, the usual mechanical anemometers are rudimentary and have a considerable margin of error due to friction between parts and the inertia of the system. In this way, it is observed in the current scenario a greater trend towards the use of ultrasonic anemometers, which are based on the calculation of the time of flight of the ultrasonic wave, a variable that consists of the time interval required for a wave emitted from a ultrasonic transducer to reach a receiving transducer. Thus, one of the techniques to estimate the time of flight of the ultrasonic wave is Threshold Detection, however, this method is profoundly affected by noisy signals. In this paper, in order to make this method more robust, an application of the Wavelet Transform integrated to the Threshold Detection method is presented, its construction commented as well as its results.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134213646","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}
Tawan Chrysther dos Santos, Aclécio de Jesus dos Santos, Raphael Cardoso, Elyson A. N. Carvalho, R. Freire, José G. N. C. Filho
{"title":"Design of a Phase Readout Circuit For SAW Sensors With an Equivalent Circuit Model","authors":"Tawan Chrysther dos Santos, Aclécio de Jesus dos Santos, Raphael Cardoso, Elyson A. N. Carvalho, R. Freire, José G. N. C. Filho","doi":"10.1109/INSCIT55544.2022.9913754","DOIUrl":"https://doi.org/10.1109/INSCIT55544.2022.9913754","url":null,"abstract":"Surface acoustic wave (SAW) sensors have been extensively investigated in recent years due to their wide applications, detecting SAW in diverse contexts. To embed these sensors in real-life applications, it is necessary to design application-specific circuits to optimize cost, power consumption, and space. During the design of such circuits, an engineer must consider specific SAW device characteristics, which is facilitated by equivalent models that can be simulated along with the surrounding electronics in the time-domain. These models are rare in SAW literature, and their usability for circuit co-simulation is not discussed. In this work, we explore a recently published model and how it behaves in a bigger-scale system. To do so, we demonstrate the design of a phase-shift circuit, which allows to read out perturbations on a SAW sensor based on the phase delay caused by a perturbation. All our simulations were performed in LTSpice, based on a Love wave sensor resonant at 116 MHz.","PeriodicalId":348937,"journal":{"name":"2022 6th International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128582620","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}