Banca de DEFESA: SERGIO FORCELLINI
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : SERGIO FORCELLINI
DATA : 31/01/2020
HORA: 14:30
LOCAL: sala S17, Térreo, Bloco Delta, Campus SBC da Fundação Universidade Federal do ABC, localizada na Alameda da Universidade, s/n, Bairro Anchieta - São Bernardo do Campo, SP.
TÍTULO:
Contruction and evaluation of monopolar and bipolar current sources for electrical impedance tomography
PÁGINAS: 100
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Biomédica
SUBÁREA: Engenharia Médica
ESPECIALIDADE: Instrumentação Odontológica e Médico-Hospitalar
RESUMO:
It is proposed in this work the construction of monopolar and bipolar current sources for use in the electrical impedance tomography, whose main component is the Analog Devices (AD8250 part number) instrumentation amplifier in buffer configuration. These sources are stable and easy to calibrate as they are used on the internal resistors of the AD8250 amplifier. The current source output impedance depends only on the relationship between the AD8250's 10kΩ internal resistors, which are the precise resistors. The output current intensity is adjusted by the gain of the instrumentation amplifier through straps and through an external resistor. As current sources have two inputs, allow the application of two different frequency signals, without the need for a sum of signals. Finally, since the gain of the instrumentation amplifier, multiplexer, and output coaxial cable is frequency dependent, it is proposed to use a parallel RC network in place of the gain adjustment resistor to compensate for the drop in gain with the frequency. and improve output impedance and current response with respect to frequency and load increase.
MEMBROS DA BANCA:
Presidente - Interno ao Programa - 2123666 - FERNANDO SILVA DE MOURA
Membro Titular - Examinador(a) Interno ao Programa - 044.443.978-10 - RAUL GONZALEZ LIMA - USP
Membro Titular - Examinador(a) Externo ao Programa - 1610505 - DANIEL PAPOTI
Membro Suplente - Examinador(a) Interno ao Programa - 2352005 - RENATO NAVILLE WATANABE
Membro Suplente - Examinador(a) Interno ao Programa - 2418537 - DANIEL BOARI COELHO