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Master's Dissertation
DOI
10.11606/D.54.1992.tde-03092010-132508
Document
Author
Full name
Alvaro Macedo da Silva
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1992
Supervisor
Committee
Roda, Valentin Obac (President)
Altafim, Ruy Alberto Corrêa
Garcia Neto, Alvaro
Title in Portuguese
Monitor para caracterização de ruídos em redes de corrente alternada.
Keywords in Portuguese
Descarga atmosférica
Rede Elétrica
Ruído
Sobretensão
Surto de tensão
Abstract in Portuguese
Distúrbios em redes elétricas podem causar danos materiais e/ou operacionais em equipamentos eletrônicos sensíveis, em particular, sistemas em microcomputadores. Com o objetivo de registrar esses distúrbios, um monitor para redes elétricas foi desenvolvido. O equipamento desenvolvido é controlado por um microprocessador 80C86-2. Os seguintes distúrbios podem ser monitorados: desvios da freqüência nominal da rede, interferências de rádio freqüência, subtensão, sobretensão e surtos de tensão. Para minimizar o gargalo de Von Neumann, os circuitos foram projetados de forma que a maior parte das leituras é solicitada via interrupção. O equipamento foi testado a nível de laboratório e os resultados são apresentados.
Title in English
Monitor to characterise electrical noise in alternate current network.
Keywords in English
Electrical network
Eletrical noise
Lightening
Overvoltage
Voltage surge
Abstract in English
Power line disturbances can adversely affect electronic sensitive equipment, particularly microcomputer based systems. In order to register these disturbances a power line monitor has been developed. The developed instrument is microprocessor based using a 80C86-2 as the main CPU. The following electrical disturbances can be monitored: nominal frequency deviations, radio-frequency interference, under and overvoltages, transient over voltages. Attempting to minimize Von Neumann´s bottle neck, the hardware was designed in such a way that most of the readings were requested through interrupts. The equipment was tested through a series of disturbance simulations, and the results are presented.
 
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Publishing Date
2010-09-08
 
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