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Dissertations / Theses on the topic 'Wireless vibration sensor'

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1

Kaplan, Shaun. "A wireless sensor network for vibration measurement." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/11424.

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Wireless sensor networks (sensornets) enable distributed sensing, opening up sensing possibilities not previously available. One application of sensornets is online, non-intrusive power transformer monitoring.
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2

Feng, Guojin. "Optimisation of vibration monitoring nodes in wireless sensor networks." Thesis, University of Huddersfield, 2016. http://eprints.hud.ac.uk/id/eprint/30320/.

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This PhD research focuses on developing a wireless vibration condition monitoring (CM) node which allows an optimal implementation of advanced signal processing algorithms. Obviously, such a node should meet additional yet practical requirements including high robustness and low investments in achieving predictive maintenance. There are a number of wireless protocols which can be utilised to establish a wireless sensor network (WSN). Protocols like WiFi HaLow, Bluetooth low energy (BLE), ZigBee and Thread are more suitable for long-term non-critical CM battery powered nodes as they provide inh
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3

Gajjala, Phani Kumar. "Energy efficient processor operation and vibration based energy harvesting schemes for wireless sensor nodes." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Gajjala_09007dcc803c4e49.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed December 11, 2007) Includes bibliographical references.
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4

Koskela, P. (Pekka). "Energy-efficient solutions for wireless sensor networks." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526217611.

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Abstract Wireless sensors play a bigger and bigger role in our everyday life and they have become a part of our life in homes, vehicles, traffic, food production and healthcare, monitoring and controlling our activities. Low-cost and resource-efficient solutions are an essential part of this development. The aim of the study was to develop solutions, which improve the energy efficiency of wireless sensor networks yet still fulfil the requirements of monitoring applications. In the study, five new solutions were developed to save energy in wireless sensor networks and all the solutions were stu
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5

Shahzad, Khurram. "Energy Efficient Wireless Sensor Node Architecture for Data and Computation Intensive Applications." Doctoral thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-21956.

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Wireless Sensor Networks (WSNs), in addition to enabling monitoring solutions for numerous new applications areas, have gained huge popularity as a cost-effective, dynamically scalable, easy to deploy and maintainable alternatives to conventional infrastructure-based monitoring solutions. A WSN consists of spatially distributed autonomous wireless sensor nodes that measure desired physical phenomena and operate in a collaborative manner to relay the acquired information wirelessly to a central location. A wireless sensor node, integrating the required resources to enable infrastructure-less di
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Obiora, Obinna Chukwuemeka. "Wireless condition monitoring to reduce maintenance resources in the Escravos–Gas–To–Liquids plant, Nigeria / Obiora, O.C." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7040.

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The purpose of this research is to reduce maintenance resources and improve Escravos–Gas–to–Liquids plant availability (EGTL) in Escravos, Nigeria using wireless condition monitoring. Secondary to the above is to justify the use of this technology over other conventional condition monitoring methods in petrochemical plants with specific reference to cost, reliability and security of the system. Wireless and continuous condition monitoring provides the means to evaluate current conditions of equipment and detect abnormalities. It allows for corrective measures to be taken to prevent upcoming fa
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7

Nguyen, Theanh. "SHM through flexible vibration sensing technologies and robust safety evaluation paradigm." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/78632/5/Andy%20Nguyen%20Thesis.pdf.

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This research has successfully developed a novel synthetic structural health monitoring system model that is cost-effective and flexible in sensing and data acquisition; and robust in the structural safety evaluation aspect for the purpose of long-term and frequent monitoring of large-scale civil infrastructure during their service lives. Not only did it establish a real-world structural monitoring test-bed right at the heart of QUT Gardens Point Campus but it can also facilitate reliable and prompt protection for any built infrastructure system as well as the user community involved.
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8

Du, Sijun. "Energy-efficient interfaces for vibration energy harvesting." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270359.

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Ultra low power wireless sensors and sensor systems are of increasing interest in a variety of applications ranging from structural health monitoring to industrial process control. Electrochemical batteries have thus far remained the primary energy sources for such systems despite the finite associated lifetimes imposed due to limitations associated with energy density. However, certain applications (such as implantable biomedical electronic devices and tire pressure sensors) require the operation of sensors and sensor systems over significant periods of time, where battery usage may be imprac
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9

Ou, Qing. "Vibration-based Energy Harvesting for Wireless Sensors used in Machine Condition Monitoring." Thesis, University of Canterbury. Mechanical Engineering, 2012. http://hdl.handle.net/10092/7234.

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In a wide range of industries, machine condition monitoring is one of the most cost effective ways to minimise maintenance efforts and machine downtime. To implement such a system, wireless solutions have increasingly become an attractive proposition due to the ease of installation and minimal infrastructure alternation. However, currently most wireless sensors in the world are powered by a finite battery source. The dependence of batteries not only requires frequent maintenance, but also has adverse environmental consequences associated with battery disposal. These reasons render massive depl
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10

Wu, Yipeng. "Récupération d'énergie vibratoire large bande à partir de transducteurs piézoélectriques." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENA018/document.

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La technologie de récupération d’énergie correspond au processus de conversion de l’énergie ambiante en énergie électrique utile à travers l’utilisation d’un matériau ou d’un transducteur spécifique. Cette énergie ambiante est présente généralement dans l’environnement du dispositif électronique autonome. L’exploitation de cette énergie peut permettre d’alimenter des dispositifs électroniques autonomes, sans l’utilisation de batteries conventionnelles. Parmi les différentes sources d’énergie ambiantes (solaire, flux d’air, flux thermiques, vibrations, etc.), les vibrations ambiantes sont une d
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11

Xinwei, Cai. "Towards achieving higher throughput with microchip based small footprint wireless vibration sensors using Zigbee and IEE802.15.4 protocol." Click HERE to connect, 2008. http://digital.library.okstate.edu/etd/XINWEI_okstate_0664M_10012.pdf.

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12

Esu, Ozak O. "Vibration-based condition monitoring of wind turbine blades." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/21679.

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Significant advances in wind turbine technology have increased the need for maintenance through condition monitoring. Indeed condition monitoring techniques exist and are deployed on wind turbines across Europe and America but are limited in scope. The sensors and monitoring devices used can be very expensive to deploy, further increasing costs within the wind industry. The work outlined in this thesis primarily investigates potential low-cost alternatives in the laboratory environment using vibration-based and modal testing techniques that could be used to monitor the condition of wind turbin
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13

Chen, Tian-Le, and 陳天樂. "Ambient Vibration Measurement of Stay Cables with Wireless Sensor Network." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/05826517536158744764.

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碩士<br>雲林科技大學<br>營建工程系碩士班<br>98<br>Ambient vibration measurement has been used widely in structural health monitoring in recent years. Most research on the ambient vibration measurement of stay cables in Taiwan adopted a seismic monitoring system SPC51 with velocity sensors VSE-15D, which is a cable transmission system developed by Tokyo Sokushin Co., Ltd. This system can be used to measure structural ambient vibration via high sensitivity servo velocity sensors. However, in situ measurement with a cable transmission system sometimes might encounter trouble, e.g., location limitation of sensor
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14

Chang, Hao-Chun, and 張皓鈞. "Building a Vibration Monitoring Wireless Sensor Network in Industrial Environment." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/87335902332661665648.

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碩士<br>國立中正大學<br>通訊工程研究所<br>100<br>Factory machines typically are equipped with motors for their operations. When motors in production line are faulty, all products will be affected. In this thesis, we use the wireless sensor network technology to implement a vibration monitoring system. On the sensor side, acceleration sensors sense the vibration of the motor. Then the fast Fourier transform is used to transform the complicated time-domain information into concise frequency-domain information. The transformed sensor data is sent to the central console station in order to let factory operator t
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15

Dierks, Eric Carl. "Design of an electromagnetic vibration energy harvester for structural health monitoring of bridges employing wireless sensor networks." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-4221.

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Energy harvesting is playing an increasingly important role in supplying power to monitoring and automation systems such as structural health monitoring using wireless sensor networks. This importance is most notable when the structures to be monitored are in rural, hazardous, or limited access environments such as busy highway bridges where traffic would be greatly disrupted during maintenance, inspection, or battery replacement. This thesis provides an overview of energy harvesting technologies and details the design, prototyping, testing, and simulation of an energy harvester which converts
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16

Hsu, Yin-Chieh, and 許音傑. "Study and Implementation of a Wireless Sensor Network System Combined with Vibration Sensing and GPS Positioning." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24229618419038244115.

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碩士<br>中華大學<br>電機工程學系(所)<br>96<br>The real-time structural health monitoring (SHM) system of civil engineering requires the more reliable and more prolonged lifetime deployments for potentially a very large number of wireless sensor and actuator nodes. As the wireless sensing components become cheaper and smaller, these miniaturized nodes offer the opportunity for the electronic sensor to be embedded unobtrusively into the civil structure and everyday environments. At present, the wireless sensor network (WSN) provides the characteristics of an effective, feasible and fairly reliable monitoring
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17

Weaver, Jason Michael. "Innovative energy harvesting technology for wireless bridge monitoring systems." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-3956.

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Energy harvesting is a promising and evolving field of research capable of supplying power to systems in a broad range of applications. In particular, the ability to gather energy directly from the environment without human intervention makes energy harvesting an excellent option for powering autonomous sensors in remote or hazardous locations. This dissertation examines the possibility of using energy harvesting in new and innovative ways to power wireless sensor nodes placed in the substructures of highway bridges for structural health monitoring. Estimates for power requirements are establ
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18

Emami, Ehsan. "Wireless Sensors and their Applications in Controlling Vibrations." Thesis, 2010. http://hdl.handle.net/10012/5173.

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As wireless devices are becoming more powerful, more flexible and less costly to produce, they are often being applied in new ways. Combining wireless technology with new types of sensors results in the ability to monitor and control the environment in ways not previously possible. For example, an intelligent wireless sensor system that consists of a sensor, digital processor and a transceiver can be mounted on a board the size of a coin. The data collected by these devices are then transmitted to a central unit which is able to thoroughly process and store this data. Not only can the central
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19

Wang, Lei. "Vibration energy harvesting by magnetostrictive material for powering wireless sensors." 2007. http://www.lib.ncsu.edu/theses/available/etd-04242007-154142/unrestricted/etd.pdf.

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20

Liao, Yun-Chih, and 廖允智. "charging circuit design for vibrational energy harvester and application to wireless sensor network." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/67495311326193297913.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>97<br>The demand for portable electronics is growing rapidly. Being Portable, they need to earn their own power. In most case the power supply is batteries. However, problems are related to their finite lifespan and dissipate labor cost of replacing batteries. For this reasons, recently energy harvester or energy scavenging system is developed to solve these problems. The concept is that energy is derived from external sources (eg solar power, thermal energy, wind energy and kinetic energy), captured and stored. Then the energy is applied to electronic devices ins
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21

Adams, Jacob Allan. "Design of vibrational and solar energy harvesting systems for powering wireless sensor networks in bridge structural health monitoring applications." Thesis, 2014. http://hdl.handle.net/2152/28283.

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Structural health monitoring systems provide a promising route to real-time data for analyzing the current state of large structures. In the wake of two high-profile bridge collapses due to an aging highway infrastructure, the interest in implementing such systems into fracture-critical and structurally deficient bridges is greater now than at any point in history. Traditionally, these technologies have not been cost-effective as bridges lack existing wiring architecture and the addition of this is cost prohibitive. Modern wireless sensor networks (WSN) now present a viable alternative to trad
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