This document outlines the presentation of the course "EEL7020 - Digital Systems" being taught at the Federal University of Santa Catarina. It introduces the course objectives, methodology, bibliography and schedule. It also provides information on the course website, organizational structure of the university and department, teaching assistants, and evaluation criteria which emphasizes that engineering errors can result in human and economic losses. Examples of past engineering errors that led to disasters are also presented.
WHAT TO DO WHEN YOU’RE FACED WITH A CAR ACCIDENTcarcluster
Car accidents are quite a common sight these days. Accidents can take place at any moment of your life and it is always best to be prepared. Here is some invaluable advice to help you in case you get involved in a vehicular accident.
Media Trendy 2012 Bernhard Glock - What Inspires Me Most Today After Having L...Media Trendy
Main issues: The secret to effective communication. Understanding the new consumer media behavior at the start of the media process. Creativity becomes core work of media agencies. Truly integrated communication cuts through all lines. The new emerging media trends and companies become the new players in media. My 8 key learnings how to win in media in the future.
Recently, research has picked up a fervent pace in the area of fault diagnosis of electrical vehicle. Like failures of a position sensor, a voltage sensor, and current sensors. Three-phase induction motors are the “workhorses” of industry and are the most widely used electrical machines. This paper presents a scheme for Fault Detection and Isolation (FDI). The proposed approach is a sensor-based technique using the mains current measurement. Current sensors are widespread in power converters control and in electrical drives. Thus, to ensure continuous operation with reconfiguration control, a fast sensor fault detection and isolation is required. In this paper, a new and fast faulty current sensor detection and isolation is presented. It is derived from intelligent techniques. The main interest of field programmable gate array is the extremely fast computation capabilities. That allows a fast residual generation when a sensor fault occurs. Using of Xilinx System Generator in Matlab / Simulink allows the real-time simulation and implemented on a field programmable gate array chip without any VHSIC Hardware Description Language coding. The sensor fault detection and isolation algorithm was implemented targeting a Virtex5. Simulation results are given to demonstrate the efficiency of this FDI approach.
Development of Assessment tool for vital body parameters measurement Ankita Khadatkar
Development of Assessment tool for vital body parameters measurement to continuously monitor health of a person & take intelligent decision based on collected data & also to reduce overall cost on Medicare system
Maintain Peace of Mind 24/7 with Lab Monitoring and AlertingElemental Machines
Slides from an informative webinar by Elemental Machines' Founder and CEO, Sridhar Iyengar, discussing how you can use Elemental Machines’ platform and wireless sensors to not only monitor your lab assets in real time from anywhere, at any time, but also instantly be notified the moment an asset malfunctions, the power fails, or a metric falls out of range. Watch the full webinar here: https://elementalmachines.com/maintain-peace-of-mind-24-7-with-lab-monitoring-and-alerting
The Elemental Machines platform empowers Lab and Q&A managers to maintain peace of mind 24/7, establish a historical record without additional effort, fine tune your maintenance forecasts with data and AI and account and adjust for environmental variables in the lab.
WHAT TO DO WHEN YOU’RE FACED WITH A CAR ACCIDENTcarcluster
Car accidents are quite a common sight these days. Accidents can take place at any moment of your life and it is always best to be prepared. Here is some invaluable advice to help you in case you get involved in a vehicular accident.
Media Trendy 2012 Bernhard Glock - What Inspires Me Most Today After Having L...Media Trendy
Main issues: The secret to effective communication. Understanding the new consumer media behavior at the start of the media process. Creativity becomes core work of media agencies. Truly integrated communication cuts through all lines. The new emerging media trends and companies become the new players in media. My 8 key learnings how to win in media in the future.
Recently, research has picked up a fervent pace in the area of fault diagnosis of electrical vehicle. Like failures of a position sensor, a voltage sensor, and current sensors. Three-phase induction motors are the “workhorses” of industry and are the most widely used electrical machines. This paper presents a scheme for Fault Detection and Isolation (FDI). The proposed approach is a sensor-based technique using the mains current measurement. Current sensors are widespread in power converters control and in electrical drives. Thus, to ensure continuous operation with reconfiguration control, a fast sensor fault detection and isolation is required. In this paper, a new and fast faulty current sensor detection and isolation is presented. It is derived from intelligent techniques. The main interest of field programmable gate array is the extremely fast computation capabilities. That allows a fast residual generation when a sensor fault occurs. Using of Xilinx System Generator in Matlab / Simulink allows the real-time simulation and implemented on a field programmable gate array chip without any VHSIC Hardware Description Language coding. The sensor fault detection and isolation algorithm was implemented targeting a Virtex5. Simulation results are given to demonstrate the efficiency of this FDI approach.
Development of Assessment tool for vital body parameters measurement Ankita Khadatkar
Development of Assessment tool for vital body parameters measurement to continuously monitor health of a person & take intelligent decision based on collected data & also to reduce overall cost on Medicare system
Maintain Peace of Mind 24/7 with Lab Monitoring and AlertingElemental Machines
Slides from an informative webinar by Elemental Machines' Founder and CEO, Sridhar Iyengar, discussing how you can use Elemental Machines’ platform and wireless sensors to not only monitor your lab assets in real time from anywhere, at any time, but also instantly be notified the moment an asset malfunctions, the power fails, or a metric falls out of range. Watch the full webinar here: https://elementalmachines.com/maintain-peace-of-mind-24-7-with-lab-monitoring-and-alerting
The Elemental Machines platform empowers Lab and Q&A managers to maintain peace of mind 24/7, establish a historical record without additional effort, fine tune your maintenance forecasts with data and AI and account and adjust for environmental variables in the lab.
Fault detection and diagnosis of high speed switching devices in power invertereSAT Journals
Abstract
Power electronic based inverters are the major components in industry. A fault diagnostics framework composed of a pattern recognition system, having machine learning technology as its integral part is utilized for failure detection of different switches and tracing multiple types of faults in an inverter. Hardware point of view power electronics inverter can be considered to be the weakest link. Hence, this work is carried on detecting faults and classifies which switches in the inverter cause the fault. Diagnosis can help to avoid unplanned breakdown, to make possible to run an emergency operation in case of a fault. On the basis of theoretical foundations of electronic power inverter a simulation model has been developed to simulate the healthy condition and all single-switch open circuit faults. The generated signal is processed using Discrete Wavelet Transform (DWT) and Fuzzy Inference Logic (FIL). A smart and accurate classification of faults is obtained using simulation results, which are tested on a wide operation domain and various load conditions.
Keywords: Fault Diagnosis, DWT, Fuzzy Logic, Artificial Intelligence (AI).
Power Failure Detection System and Intimation over InternetDr. Amarjeet Singh
Electricity is a crucial and necessary aspect of modern life. Electricity is used to power appliances, computers, electronics, machinery, and public transportation systems, as well as for lighting, heating, cooling, and refrigeration.
When the electricity goes out, understanding what caused it can help you predict when it will be restored. The weather is the primary cause of power outages. Human mistake, equipment failure, and scheduled maintenance could all be factors.
As a result, we're using this project to detect power outages and notify users via a connected smartphone notification.
WiRoTip: an IoT-based Wireless Sensor Network for Water Pipeline MonitoringIJECEIAES
One of the key components of the Internet of Things (IoT) is the Wireless Sensor Network (WSN). WSN is an effective and efficient technology. It consists of senor nodes; smart devices that allows data collection and pre-processing wirelessly from real world. However, issues related to power consumption and computational performance still persist in classical wireless nodes since power is not always available in application like pipeline monitoring. Moreover, they could not be usually suitable and adequate for this kind of application due to memory shortage and performance constraints. Designing new IoT WSN system that matches the application specific requirements is extremely important. In this paper, we present WiRoTip, a WSN node prototype for water pipeline application. An experimental and a comparative studies have been performed for the different node’s components to achieve a final adequate design.
WiRoTip: an IoT-based Wireless Sensor Network for Water Pipeline Monitoring
Lab1 apresentacao disciplina
1. Universidade Federal de Santa Catarina
Centro Tecnológico – CTC
Departamento de Engenharia Elétrica
http://gse.ufsc.br
“EEL7020 – Sistemas Digitais”
Prof. Eduardo Augusto Bezerra
Eduardo.Bezerra@eel.ufsc.br
Florianópolis, agosto de 2012.
3. Roteiro da aula – Parte I
1. Apresentação do site da disciplina
• Ementa, objetivos, metodologia, bibliografia
• Ferramentas, materias, recursos pedagógicos
• Cronograma previsto para as aulas
2. Organograma
3. Monitoria e equipe de apoio
4. Avaliação e discussão
EEL7020 – Sistemas Digitais 3/11
4. Site da disciplina
http://gse.ufsc.br/bezerra
• Menu (barra superior) – Teaching
• Seguir link EEL7020 Sistemas Digitais
EEL7020 – Sistemas Digitais 4/11
5. Organograma – UFSC / CTC / EEL / EEL-7020
Reitoria
Chefe do Departamento EEL
Prof. Fernando Azevedo
Coordenador do Curso de Eng. Elétrica
Prof. Renato Pacheco
Professores de Sistemas Digitais
Prof. Djones Lettnin, Prof. Joni Fraga, Prof. Eduardo Bezerra
Alunos de pós-graduação em estágio docência e monitores
MSc Roberto de Matos, Eng. Frederico Ferlini, Monitor da disciplina
Alunos de graduação da Eng. Elétrica, Automação e Produção Elétrica
EEL7020 – Sistemas Digitais 5/11
6. Monitoria e equipe de apoio
• Monitor da disciplina
• Estágio docência
EEL7020 – Sistemas Digitais 6/11
7. Avaliação criteriosa. O erro de um engenheiro pode
resultar em perdas humanas e materiais.
Exemplos de erros de engenheiros que resultaram em
catástrofes:
July 28, 1962 -- Mariner I space probe. A bug in the flight
software for the Mariner 1 causes the rocket to divert from
its intended path on launch. Mission control destroys the
rocket over the Atlantic Ocean. The investigation into the
accident discovers that a formula written on paper in pencil
was improperly transcribed into computer code, causing
the computer to miscalculate the rocket's trajectory.
EEL7020 – Sistemas Digitais 7/11
8. 1985-1987 -- Therac-25 medical accelerator. A radiation therapy
Avaliação
device malfunctions and delivers lethal radiation doses at
several medical facilities. Based upon a previous design, the
Therac-25 was an "improved" therapy system that could deliver
two different kinds of radiation: either a low-power electron
beam (beta articles) or X-rays. The Therac-25's X-rays were
generated by smashing high-power electrons into a metal target
positioned between the electron gun and the patient. A second
"improvement" was the replacement of the older Therac-20's
electromechanical safety interlocks with software control, a
decision made because software was perceived to be more
reliable. What engineers didn't know was that both the 20 and
the 25 were built upon an operating system that had been
kludged together by a programmer with no formal training.
Because of a subtle bug called a "race condition," a quick-
fingered typist could accidentally configure the Therac-25 so the
electron beam would fire in high-power mode but with the metal
X-ray target out of position. At least five patients die; others are
seriously injured. EEL7020 – Sistemas Digitais 8/11
9. Avaliação criteriosa. O erro de um engenheiro pode
resultar em perdas humanas e materiais.
1993 -- Intel Pentium floating point divide. A silicon error
causes Intel's highly promoted Pentium chip to make
mistakes when dividing floating-point numbers that occur
within a specific range. For example, dividing
4195835.0/3145727.0 yields 1.33374 instead of 1.33382, an
error of 0.006 percent. Although the bug affects few users, it
becomes a public relations nightmare. With an estimated 3
million to 5 million defective chips in circulation, at first Intel
only offers to replace Pentium chips for consumers who can
prove that they need high accuracy; eventually the company
relents and agrees to replace the chips for anyone who
complains. The bug ultimately costs Intel $475 million.
EEL7020 – Sistemas Digitais 9/11
10. Avaliação criteriosa. O erro de um engenheiro pode
resultar em perdas humanas e materiais.
June 4, 1996 -- Ariane 5 Flight 501. Working code for the
Ariane 4 rocket is reused in the Ariane 5, but the Ariane 5's
faster engines trigger a bug in an arithmetic routine inside the
rocket's flight computer. The error is in the code that converts
a 64-bit floating-point number to a 16-bit signed integer. The
faster engines cause the 64-bit numbers to be larger in the
Ariane 5 than in the Ariane 4, triggering an overflow condition
that results in the flight computer crashing.
EEL7020 – Sistemas Digitais 10/11
11. November 2000 -- National Cancer Institute, Panama City. In a
Avaliação
series of accidents, therapy planning software created by Multidata
Systems International, a U.S. firm, miscalculates the proper dosage
of radiation for patients undergoing radiation therapy. Multidata's
software allows a radiation therapist to draw on a computer screen
the placement of metal shields called "blocks“ designed to protect
healthy tissue from the radiation. But the software will only allow
technicians to use four shielding blocks, and the Panamanian
doctors wish to use five. The doctors discover that they can trick
the software by drawing all five blocks as a single large block with
a hole in the middle. What the doctors don't realize is that the
Multidata software gives different answers in this configuration
depending on how the hole is drawn: draw it in one direction and
the correct dose is calculated, draw in another direction and the
software recommends twice the necessary exposure. At least eight
patients die, while another 20 receive overdoses likely to cause
significant health problems. The physicians, who were legally
required to double-check the computer's calculations by hand, are
indicted for murder.
EEL7020 – Sistemas Digitais 11/11