2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)最新文献

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Active ISFET sensor readout circuit 有源ISFET传感器读出电路
Luciano Lourenço Furtado da Silva, Felipe Silveira, C. A. de Moraes Cruz, Thiago Daniel de Oliveira Moura
{"title":"Active ISFET sensor readout circuit","authors":"Luciano Lourenço Furtado da Silva, Felipe Silveira, C. A. de Moraes Cruz, Thiago Daniel de Oliveira Moura","doi":"10.1109/INSCIT.2017.8103515","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103515","url":null,"abstract":"An improved readout circuit interface for ion-sensitive field-effect transistor (ISFET) is proposed in this work. When compared with conventional topologies found on the literature, the proposed ISFET readout circuit presents at least two advantages. The first concerns the simplicity of the new circuity topology, and the second is the additional gain conferred to the sensor output signal. The performance of the proposed readout circuit integrated with the electrical ISFET model was investigated through BSIM3v3 simulations. The conventional ISFET readout topologies are found not to confer gain to the electrical ISFET output signal, and the sensor output signal has its limit predicted by the Nernst s model. Simulation results shows that the proposed ISFET readout circuit topology grants additional gain to the sensor output signal increasing its sensitivity up to three times the Nernst limit.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130337957","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
Surface plasmon resonance features of corrugatec copper and gold films: Grating mode operation with wavelength interrogation 波纹铜和金薄膜的表面等离子体共振特性:波长询问的光栅模式操作
E. P. Rodrigues, A. Lima, L.C. Oliveira, Tales Abreu Tavares de Sousa, H. Neff
{"title":"Surface plasmon resonance features of corrugatec copper and gold films: Grating mode operation with wavelength interrogation","authors":"E. P. Rodrigues, A. Lima, L.C. Oliveira, Tales Abreu Tavares de Sousa, H. Neff","doi":"10.1109/INSCIT.2017.8103505","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103505","url":null,"abstract":"This work presents a theoretical and experimental results obtained with surface resonance sensors operating in the periodic grating mode. The spatial periodicity of the corrugated surface of the manufactured devices was set to 478 nm. Two types of metallic layers have been tested, one of 50 nm of gold and another of 100 nm of copper. The wavelength interrogation mode has been used and the beam of incident light was shined directly onto the metal layer. The characteristics of the transducer manufactured with the two corrugated surfaces have been explored in the Kretschmann configuration to determine the sensors responsivities. The obtained results confirmed the correctness of the proposed methodology and the feasibility of the proposed transducer designs. The sensor system was tested for situations where a change in the refractive index of the gas occurs due to the insertion of condensed water vapor. Both transducers are tested and results as sensibility and detection limit are presented and compared.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130049757","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
A low-power FPN attenuation method in the double-log PMOS APS 双对数PMOS APS中的低功耗FPN衰减方法
C. A. de Moraes Cruz, D. W. de Lima Monteiro, G. Sicard, Francelino Freitas, Alexandre Kennedy Pinto Souza
{"title":"A low-power FPN attenuation method in the double-log PMOS APS","authors":"C. A. de Moraes Cruz, D. W. de Lima Monteiro, G. Sicard, Francelino Freitas, Alexandre Kennedy Pinto Souza","doi":"10.1109/INSCIT.2017.8103521","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103521","url":null,"abstract":"The active-pixel-sensor (APS) imagers operating in logarithmic mode yield high-dynamic-range images. However, this pixel exhibits a small output signal voltage swing. The double-log PMOS APS improves the signal swing in a factor higher than two compared with the conventional log APS. Fixed-pattern noise across the focal-plane array is particularly critical in the log mode, but can be reduced by double sampling techniques with a voltage reference. This voltage reference is established by means of an internal current and is subject to higher power consumption. In this work an in-pixel voltage reference in voltage mode is proposed, providing a more efficient control and consuming less power than the previous solution, while preserving five transistors per pixel, as before.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116357155","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 noise-cancelling technique for data acquisition systems: A case study on embedded ADCs 数据采集系统的降噪技术:以嵌入式adc为例
Jamelly Ferreira, Isabela Trindade, Leonardo Ramalho, Ilan Sousa, A. Klautau
{"title":"A noise-cancelling technique for data acquisition systems: A case study on embedded ADCs","authors":"Jamelly Ferreira, Isabela Trindade, Leonardo Ramalho, Ilan Sousa, A. Klautau","doi":"10.1109/INSCIT.2017.8103529","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103529","url":null,"abstract":"The noise present in embedded analog-to-digital converter (ADC) of microcontrollers (MCUs) and other System-on-chips (SoCs) is a limiting factor that can impede their use in some application. This noise can be caused due to the proximity between ADCs and digital circuits whose switching couples to the analog signals and degrades the input signal integrity. Moreover, many models of microcontrollers have more than one ADC input channel, and their inputs suffer impairments due to those noise sources. Because the noise source can be the same for all the inputs, the noise is correlated and it can be exploited to increase the signal quality in the digital domain. This paper proposes a novel adaptive noise canceler based on the normalized least mean squares (NLMS) adaptive noise cancellation algorithm. In the proposed technique, three analog inputs of the microcontroller are used, where two are used as reference and one is used for acquiring the desired signal. An experimental setup was implemented for testing the proposed scheme and the results show improvement of more than 20 dB in the noise floor, in cases of noisy power supply.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121222069","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
Estimation of lithium-ion battery model parameters using experimental data 用实验数据估计锂离子电池模型参数
Rafael M. Santos, C. L. G. S. Alves, E. Macedo, J. Villanueva, L. V. Hartmann
{"title":"Estimation of lithium-ion battery model parameters using experimental data","authors":"Rafael M. Santos, C. L. G. S. Alves, E. Macedo, J. Villanueva, L. V. Hartmann","doi":"10.1109/INSCIT.2017.8103527","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103527","url":null,"abstract":"Lithium battery cells are commonly modeled using an equivalent circuit with large lookup tables for each circuit element, allowing flexibility for the model to match measured data as close as possible. Pulse discharge curves and charge curves are collected experimentally to characterize the battery performance at various operating points. It can be extremely difficult to fit the simulation model to the experimental data using optimization algorithms, due to the number of values in the lookup tables. This paper describes a detailed procedure of how estimate the battery model parameters using experimental data. the experiment is realized with a computer that realize the control of charge and discharge process sending SCPI commands via serial communication to the Four Quadrant Power Supply from Kepco Inc. with 100V and 10A as limits. The estimation of each battery model parameter is made to lithium-ion battery with a capacity of 20 Ah, and the presented methodology can be easily adapted to any type of battery. The mean objective of the results is estimate the battery parameters to posteriorly use the battery model to estimate the SoC by adaptive method. As results, after the estimation of each parameter, it is possible to observe the resistances exponential behavior, where they decrease as SoC decrease. As conclusions, this paper can contribute to the field of measurement of magnetic and non electric quantities, where it helps to determine the Battery Equivalent Circuit Model and its parameters.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134390036","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: 18
A cosmic rays based method to detect and correct PMT gain variations for the ν-Angra veto system 基于宇宙射线的ν-Angra否决系统PMT增益变化检测和校正方法
L. Melo, G. Lopes, D. M. Souza, I. A. Costa, A. F. Junior, R. Nobrega, J. Anjos, H. Lima, G. Cernichiaro, I. Pepe, E. D. S. Filho, D. Ribeiro, P. Chimenti, G. Guedes, E. Kemp
{"title":"A cosmic rays based method to detect and correct PMT gain variations for the ν-Angra veto system","authors":"L. Melo, G. Lopes, D. M. Souza, I. A. Costa, A. F. Junior, R. Nobrega, J. Anjos, H. Lima, G. Cernichiaro, I. Pepe, E. D. S. Filho, D. Ribeiro, P. Chimenti, G. Guedes, E. Kemp","doi":"10.1109/INSCIT.2017.8103526","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103526","url":null,"abstract":"The Neutrinos Angra (ν-Angra) Experiment aims to construct an antineutrinos detection device capable of monitoring the Angra dos Reis nuclear reactor activity. The proposed system considers a detector operating on the surface, which makes it exposed to a high rate of background noise, mainly due to cosmic rays. Therefore, the veto system has a fundamental role in the experiment viability. This paper proposes an innovative methodology to monitor the gain variation of the photomultiplier tubes in the veto system, during operation, based on cosmic rays muons.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122642311","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: 1
A study of distance/similarity measurements in the context of signal processing (density estimation) 信号处理(密度估计)中距离/相似性测量的研究
D. M. Souza, I. A. Costa, R. Nobrega
{"title":"A study of distance/similarity measurements in the context of signal processing (density estimation)","authors":"D. M. Souza, I. A. Costa, R. Nobrega","doi":"10.1109/INSCIT.2017.8103517","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103517","url":null,"abstract":"Currently the number of applications where the data generation function is not known has been growing, making necessary the use of non-parametric estimation techniques to describe such model. Therefore, relevant questions emerge regarding the quality of the model that represents some dataset and how to quantify this quality. This article aims to evaluate some of the measurements presented in the literature used for this purpose, evaluating different pdf regions in the context of goodness of fit.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122741721","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: 1
Semiconductor bending setup for electrical characterization of mechanical stress 机械应力电学表征用半导体弯曲装置
R. Bühler, A. Perin, R. Giacomini
{"title":"Semiconductor bending setup for electrical characterization of mechanical stress","authors":"R. Bühler, A. Perin, R. Giacomini","doi":"10.1109/INSCIT.2017.8103520","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103520","url":null,"abstract":"This work proposes and describes in details a complete setup solution for testing of non-encapsulated electronic devices under mechanical stress. The equipment was implemented and calibrated to later use in electrical characterization of devices, such as MOSFETs and diodes under controlled mechanical stress. The semiconductor bending equipment allows the electrical characterization of devices using already existent probe stations in laboratories without additional modifications, as presented here.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129924835","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
Modeling and practical evaluation of a class-E amplifier with a three-coil inductive link 带三圈电感链路的e类放大器的建模与实用评价
Luian H. Zanoni, F. L. Bertotti
{"title":"Modeling and practical evaluation of a class-E amplifier with a three-coil inductive link","authors":"Luian H. Zanoni, F. L. Bertotti","doi":"10.1109/INSCIT.2017.8103532","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103532","url":null,"abstract":"This paper presents the state-space modeling of a system consisting of a class-E amplifier and an inductive link with three coils, featuring a reading unit and a sensor unit. From the developed model, it was possible to carry out a series of simulations in order to evaluate and improve the system performance before its implementation. The inductive link is able to perform the energy transfer from the reading unit to the sensing unit, in order to supply power to a given load in the sensing unit. The class-E amplifier and inductive link were implemented and the results showed that it is possible to supply a low power microcontroller and a sensor with the class-E amplifier at a supply voltage of 15V for a maximum distance of 30 mm between the reading and sensing unit coils.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"489 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115881757","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 low-cost solar generation monitoring system suitable for internet of things 一种适合物联网的低成本太阳能发电监测系统
Ricardo Mazza Zago, F. Fruett
{"title":"A low-cost solar generation monitoring system suitable for internet of things","authors":"Ricardo Mazza Zago, F. Fruett","doi":"10.1109/INSCIT.2017.8103509","DOIUrl":"https://doi.org/10.1109/INSCIT.2017.8103509","url":null,"abstract":"This work presents an internet of things low cost instrument specially developed to measure and quantify the energy generation of photovoltaic panels. A hub was developed, capable of managing networks with hundreds of nodes, storing the data locally and being able to transmit relevant information to cloud services, besides that, hosts a HTML page for local and internet access to data. The sensor nodes can measure solar panel DC outputs up to 60 V and 30 A. Besides the system was designed to have low-power consumption. A display interface to manage data from many sensors allows view and generate period reports in XLS, CSV and PDF formats.","PeriodicalId":416167,"journal":{"name":"2017 2nd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125234082","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
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