This project report summarizes a wireless sensor network project completed by three students. It describes the objectives and types of routing protocols used in wireless sensor networks, focusing on the LEACH hierarchical routing protocol. It then discusses some weaknesses of LEACH and proposes an improved DECSA algorithm that selects cluster heads based on both distance and remaining energy to try to overcome LEACH's energy imbalance issues and extend network lifetime.
Motion sensors have a long history dating back to when early humans used movements of stars and crops to determine seasons. They were first widely used in World War II in mines and claymores to detect enemy movement. Technologically, motion sensors work by emitting waves that bounce off objects and are detected, with the information used to trigger a device. Today they have many applications in security, lighting, tracking, and more, bringing both benefits like convenience and disadvantages like easy accidental triggering. Motion sensors continue advancing, with potential uses like tracking performance through sensors embedded in clothing.
Sensor fusion between car and smartphoneGabor Paller
This document discusses sensor fusion between a car and smartphone to enable new applications. It describes relevant sensors on each device - cars provide power, position and built-in sensors while phones contribute GPS, accelerometer, gyroscope and compass. Obtaining car data via OBDII is described, along with challenges like magnetic interference. Two use cases are proposed: dead reckoning navigation without GPS by combining car speed and phone direction, and vibration analysis using the phone's accelerometer to detect road conditions when driving. Overall, integrating car and phone sensors can provide richer data but also requires handling sensor limitations.
Better motion control using accelerometer/gyroscope sensor fusionGabor Paller
This document discusses using accelerometer and gyroscope sensor fusion to improve motion control. It begins by reviewing a previous presentation on using only an accelerometer for motion recognition. It then describes how each sensor - accelerometer, gyroscope, and compass - measures motion differently, with strengths and weaknesses. The main idea is to use a gyroscope to compensate for the gravity component detected by the accelerometer, allowing separation of gravity from motion acceleration. This allows more accurate motion recognition compared to using just acceleration. Implementation examples and conclusions are provided on potential applications and approaches to sensor fusion.
The document discusses the history and evolution of the English language from its origins as Anglo-Frisian dialects brought to Britain by Anglo-Saxon settlers in the 5th century AD. Over time, the language was influenced by Old Norse with the Viking invasions and later by Norman French following the Norman conquest, and has continued to change with waves of loanwords from Latin, Greek and other languages. The document provides context around the development of English up to its emergence as a global language in the modern era.
The document discusses the history and development of chocolate over centuries. It details how cocoa beans were first used as currency by the Maya and Aztecs before being introduced to Europe in the 16th century. The document then explains how chocolate became popularized as a drink in Europe in the 17th century and how its production and consumption expanded globally over subsequent centuries.
This project report summarizes a wireless sensor network project completed by three students. It describes the objectives and types of routing protocols used in wireless sensor networks, focusing on the LEACH hierarchical routing protocol. It then discusses some weaknesses of LEACH and proposes an improved DECSA algorithm that selects cluster heads based on both distance and remaining energy to try to overcome LEACH's energy imbalance issues and extend network lifetime.
Motion sensors have a long history dating back to when early humans used movements of stars and crops to determine seasons. They were first widely used in World War II in mines and claymores to detect enemy movement. Technologically, motion sensors work by emitting waves that bounce off objects and are detected, with the information used to trigger a device. Today they have many applications in security, lighting, tracking, and more, bringing both benefits like convenience and disadvantages like easy accidental triggering. Motion sensors continue advancing, with potential uses like tracking performance through sensors embedded in clothing.
Sensor fusion between car and smartphoneGabor Paller
This document discusses sensor fusion between a car and smartphone to enable new applications. It describes relevant sensors on each device - cars provide power, position and built-in sensors while phones contribute GPS, accelerometer, gyroscope and compass. Obtaining car data via OBDII is described, along with challenges like magnetic interference. Two use cases are proposed: dead reckoning navigation without GPS by combining car speed and phone direction, and vibration analysis using the phone's accelerometer to detect road conditions when driving. Overall, integrating car and phone sensors can provide richer data but also requires handling sensor limitations.
Better motion control using accelerometer/gyroscope sensor fusionGabor Paller
This document discusses using accelerometer and gyroscope sensor fusion to improve motion control. It begins by reviewing a previous presentation on using only an accelerometer for motion recognition. It then describes how each sensor - accelerometer, gyroscope, and compass - measures motion differently, with strengths and weaknesses. The main idea is to use a gyroscope to compensate for the gravity component detected by the accelerometer, allowing separation of gravity from motion acceleration. This allows more accurate motion recognition compared to using just acceleration. Implementation examples and conclusions are provided on potential applications and approaches to sensor fusion.
The document discusses the history and evolution of the English language from its origins as Anglo-Frisian dialects brought to Britain by Anglo-Saxon settlers in the 5th century AD. Over time, the language was influenced by Old Norse with the Viking invasions and later by Norman French following the Norman conquest, and has continued to change with waves of loanwords from Latin, Greek and other languages. The document provides context around the development of English up to its emergence as a global language in the modern era.
The document discusses the history and development of chocolate over centuries. It details how cocoa beans were first used as currency by the Maya and Aztecs before being introduced to Europe in the 16th century. The document then explains how chocolate became popularized as a drink in Europe in the 17th century and how its production and consumption expanded globally over subsequent centuries.
Este documento discute os desafios enfrentados por pequenas empresas durante a pandemia de COVID-19. Muitas pequenas empresas tiveram que fechar temporariamente e lidar com a queda nas vendas, enquanto tentavam manter seus funcionários. Algumas receberam auxílio do governo para continuar operando e pagando seus funcionários durante este período difícil.
Este documento não contém nenhum conteúdo legível. Consiste apenas de uma série de caracteres repetidos que não formam palavras ou frases com sentido. Portanto, não é possível resumir seu conteúdo de forma concisa em 3 frases ou menos.
O documento discute os desafios enfrentados pelas empresas de tecnologia na moderação de conteúdo. Ele destaca como a desinformação, discurso de ódio e conteúdo prejudicial representam problemas crescentes que exigem novas abordagens para identificar e remover esse tipo de conteúdo de forma justa e equilibrada.
A empresa está enfrentando desafios financeiros devido à queda nas vendas e precisa cortar custos. O departamento de marketing será reestruturado e alguns funcionários serão demitidos, enquanto outros serão transferidos para novas funções. Uma consulta externa foi contratada para ajudar a redesenhar o departamento de marketing para melhorar a eficiência e reduzir gastos.
O documento discute os desafios enfrentados pelas empresas de tecnologia na moderação de conteúdo. Afirma que as empresas precisam equilibrar a liberdade de expressão com a necessidade de remover conteúdo prejudicial, e que não há soluções fáceis para esse problema complexo.
The document discusses the history of chocolate, from its origins in Mesoamerica to its popularity in Europe. Cacao beans were first used as currency and medicine by the Olmec and Mayans. Spanish conquistadors introduced chocolate to Europe in the 16th century, where it became a popular drink among the elite. By the 19th century, chocolate had evolved into a global commodity.
The document discusses the history and development of the internet over the past 50 years, from its origins as a US military program called ARPANET to the commercialization of the world wide web in the 1990s. It grew exponentially from the 1980s onward and became a major force in communications, business, and society through new technologies and greater public access to computers and online content.
Este documento discute os desafios enfrentados por pequenas empresas durante a pandemia de COVID-19. Muitas pequenas empresas tiveram que fechar temporariamente e lidar com a queda nas vendas, enquanto tentavam manter seus funcionários. Algumas receberam auxílio do governo para continuar operando e pagando seus funcionários durante este período difícil.
Este documento não contém nenhum conteúdo legível. Consiste apenas de uma série de caracteres repetidos que não formam palavras ou frases com sentido. Portanto, não é possível resumir seu conteúdo de forma concisa em 3 frases ou menos.
O documento discute os desafios enfrentados pelas empresas de tecnologia na moderação de conteúdo. Ele destaca como a desinformação, discurso de ódio e conteúdo prejudicial representam problemas crescentes que exigem novas abordagens para identificar e remover esse tipo de conteúdo de forma justa e equilibrada.
A empresa está enfrentando desafios financeiros devido à queda nas vendas e precisa cortar custos. O departamento de marketing será reestruturado e alguns funcionários serão demitidos, enquanto outros serão transferidos para novas funções. Uma consulta externa foi contratada para ajudar a redesenhar o departamento de marketing para melhorar a eficiência e reduzir gastos.
O documento discute os desafios enfrentados pelas empresas de tecnologia na moderação de conteúdo. Afirma que as empresas precisam equilibrar a liberdade de expressão com a necessidade de remover conteúdo prejudicial, e que não há soluções fáceis para esse problema complexo.
The document discusses the history of chocolate, from its origins in Mesoamerica to its popularity in Europe. Cacao beans were first used as currency and medicine by the Olmec and Mayans. Spanish conquistadors introduced chocolate to Europe in the 16th century, where it became a popular drink among the elite. By the 19th century, chocolate had evolved into a global commodity.
The document discusses the history and development of the internet over the past 50 years, from its origins as a US military program called ARPANET to the commercialization of the world wide web in the 1990s. It grew exponentially from the 1980s onward and became a major force in communications, business, and society through new technologies and greater public access to computers and online content.