Felipe Walter Dafico Pfrimer

@utfpr.edu.br

Professor – Department of Electronic Engineering (UTFPR – Campus Toledo)
Federal University of Technology

Felipe Walter Dafico Pfrimer


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https://researchid.co/fpfrimer

RESEARCH, TEACHING, or OTHER INTERESTS

Electrical and Electronic Engineering, Multidisciplinary
10

Scopus Publications

Scopus Publications

  • Portable and low-cost 3D-printed visible-near infrared (vis-NIR) spectrometer using a linear charge-coupled device (CCD) sensor array
    Bruno Vinicius Machado Castanho, Felipe Walter Dafico Pfrimer, Ricardo Schneider, Douglas José Coutinho
    Measurement Journal of the International Measurement Confederation, 2025
  • Apparatus for three-dimensional emission pattern estimation of acoustic emitters
    Alberto Yoshihiro Nakano, Artur Adolfo Falkovski, Mayconvorgel Ibrahim Ribeiro, Felipe Walter Dafico Pfrimer
    Journal of the Acoustical Society of America, 2023
    An acoustic emitter based on electrical–mechanical transduction is designed to have a projected emission pattern. However, due to constructive features, design flaws, and different material qualities, the final device does not match project specifications which may cause, among other things, the reduction of performance, loss of emission power, and undesirable noise. In this work, an apparatus for acoustic characterization comprising a turntable and an arc is developed to estimate the emission power of acoustic emitters. The time-stretched pulse method is used as a test signal to obtain the emission power for each emitter's azimuth and elevation angles. Processing the acquired signals gives an estimated radiation pattern in the three-dimensional space, which visually allows the analysis of the emission characteristics of the acoustic source.
  • Low-Cost Water Quality Sensors for IoT: A Systematic Review
    Edson Tavares de Camargo, Fabio Alexandre Spanhol, Juliano Scholz Slongo, Marcos Vinicius Rocha da Silva, Jaqueline Pazinato, et al.
    Sensors, 2023
    In many countries, water quality monitoring is limited due to the high cost of logistics and professional equipment such as multiparametric probes. However, low-cost sensors integrated with the Internet of Things can enable real-time environmental monitoring networks, providing valuable water quality information to the public. To facilitate the widespread adoption of these sensors, it is crucial to identify which sensors can accurately measure key water quality parameters, their manufacturers, and their reliability in different environments. Although there is an increasing body of work utilizing low-cost water quality sensors, many questions remain unanswered. To address this issue, a systematic literature review was conducted to determine which low-cost sensors are being used for remote water quality monitoring. The results show that there are three primary vendors for the sensors used in the selected papers. Most sensors range in price from US$6.9 to US$169.00 but can cost up to US$500.00. While many papers suggest that low-cost sensors are suitable for water quality monitoring, few compare low-cost sensors to reference devices. Therefore, further research is necessary to determine the reliability and accuracy of low-cost sensors compared to professional devices.
  • Analysis of Vegetable Oil from Different Suppliers by Chemometric Techniques to Ensure Correct Classification of Oil Sources to Deal with Counterfeiting
    Antonio Cesar Godoy, Patrícia Daniele Silva dos Santos, Alberto Yoshihiro Nakano, Rafael Admar Bini, David Antônio Brum Siepmann, et al.
    Food Analytical Methods, 2020
  • Snapshots Analyses for Turbidity Measurements in Water
    Antonio Cesar Godoy, Alberto Yoshihiro Nakano, David Antônio Brum Siepmann, Ricardo Schneider, Felipe Walter Dafico Pfrimer, et al.
    Water Air and Soil Pollution, 2018
  • How to Develop a Single Channel Electrocardiograph with a Low Budget
    Amanda Costa Martinez, Felipe Walter Dafico Pfrimer, Mathias Scroccaro Costa, Alberto Yoshihiro Nakano
    IEEE Latin America Transactions, 2018
  • A closed-loop interrogation technique for multi-point temperature measurement using fiber bragg gratings
    Felipe Walter Dafico Pfrimer, Marcela Koyama, Alex Dante, Elnatan Chagas Ferreira, Jose Antonio Siqueira Dias
    Journal of Lightwave Technology, 2014
  • A low-cost technique for simulation and characterization of fibre Bragg grating sensors in undergraduate instructional laboratories
    Alex Dante, Felipe Walter Dafico Pfrimer, Elnatan Chagas Ferreira, José Antonio Siqueira Dias
    International Journal of Electrical Engineering and Education, 2014
    Fibre optic sensors are becoming so important in engineering that it is important to introduce this new subject in Electrical Engineering courses. This work describes the construction of a simple, low-cost fibre Bragg grating (FBG) electronic interrogation system that uses LabVIEW as a tool for simulation, measurement interface and parameter extraction of the FBGs. Although the system is relatively slow (a precise FBG characterization takes 10 minutes to be performed), the students can observe, while performing the assigned tasks, all the signals in the interrogator circuit, resulting in an extremely useful didactic tool. The measurements obtained with the system are in very good agreement with results measured on expensive Optical Spectrum Analysers when obtaining a full FBG profile. The system can also be used to measure and characterize FBGs submitted to external strains (e.g., temperature and force) demonstrating the Bragg shift caused by these strains on FBG sensors.
  • Closed-loop interrogation techniques for temperature measurement using fibre bragg gratings
    Photoptics 2013 Proceedings of the International Conference on Photonics Optics and Laser Technology, 2013
  • Design of a new electromechanical platform for ankle sprain simulation and measurement of the muscle reaction time through electromyography
    Recent Advances in Applied and Biomedical Informatics and Computational Engineering in Systems Applications Aic 11 Bebi 11, 2011