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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2023.tde-16032023-083921
Document
Author
Full name
Márcio Luís Munhoz Amorim
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2023
Supervisor
Committee
Carmo, João Paulo Pereira do (President)
Afonso, José Augusto
Ando Junior, Oswaldo Hideo
Title in Portuguese
Fonte inteligente para aplicações de Data logger
Keywords in Portuguese
data logger
fonte simétrica
microprocessada
nobreak
Abstract in Portuguese
Os data loggers são equipamentos baseados em processadores digitais. São dispositivos eletrônicos que registram dados ao longo do tempo em relação a um instrumento ou sensor. Esses dispositivos requerem uma fonte de energia limpa confiável e sem interrupção. O objetivo deste mestrado é desenvolver uma fonte inteligente para data logger, com componentes de baixo custo, desenhada e montada com partes feitas em impressoras 3D, possuindo abundantes no mercado; apresentar proteção contra queda de energia, possuindo nobreak interno (tipo Offline); possuir reguladores de precisão nas saídas DC, permitindo suporte para vários tipos de experimentos como: biossinais que requerem fontes simétricas de tensão positiva e negativa (-12V, +12V), circuito transistorizados e digitais (5V) e microeletrônica (+3.3V); e ser microprocessado. Características importantes da fonte envolvem a capacidade de informar eventos como o nível de bateria baixo, presença de tensão AC ou DC, excesso de temperatura, desligamento de emergência por motivo maior, também desligar por solicitação mecânica através do botão frontal, ou por solicitação lógica de sinal digital enviado por outro micro controlador; possuir comunicação externa UART; ser reprogramável, com capacidade de receber firmware remotamente e efetuar updates sem a necessidade de sua remoção ou abertura da fonte.
Title in English
Smart power supply for Data logger applications
Keywords in English
data logger
microprocessor
symmetrical power source
UPS
Abstract in English
Data loggers are equipment based on digital processors. They are electronic devices that record data over time in relation to an instrument or sensor. These devices require clean, reliable power source without interruption. The objective of this masters is to develop an open hardware power supply, with low cost components, designed and assembled with parts made on 3D printers, having components that are abundant in the market; provide protection against power failure by having an internal UPS (Offline type); have precision regulators on the DC outputs, allowing support for various types of experiments such as: biosignals that require symmetrical sources of positive and negative voltage (-12V, +12V), digital and transistorized circuits (5V) and microelectronics (+3.3V); and be microprocessed. Important features of the power supply involve the ability to report events such as low battery level, presence of AC or DC voltage, excess temperature, emergency shutdown, and shutdown by mechanical request through the front button, or by logical request of digital signal sent by another micro controller; have external UART communication; be reprogrammable, with the ability to receive firmware remotely and perform updates without having to remove it or open power supply.
 
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Publishing Date
2023-03-16
 
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