Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 22 for “"Piezoelectric Energy Harvesting"”.
-
Multifunctional Piezoelectric Energy Harvesting Concepts
Energy harvesting technology has the ability to create autonomous, self-powered electronic systems that do not rely on battery power for their operation. The term energy harvesting describes the process of converting ambient energy surrounding a system into useful electrical energy through the use …
-
Piezoelectric Energy Harvesting for Roadways
Energy harvesting technologies have drawn much attention as an alternative power source of roadway accessories in different scales. Piezoelectric energy harvesting consisting of PZT piezoceramic disks sealed in a protective package is developed in this work to harness the deformation energy of …
-
Tiny Piezoelectric Energy-Harvesting CMOS Charger
… industries, and human bodies can save money, energy, and lives. They have to be compact to access difficult places, and their tiny on-board batteries drain quickly to support the functionality. Fortunately, piezoelectric transducer can draw kinect energy from ambient vibrations to constantly …
-
Piezoelectric Energy Harvesting for Powering Wireless Monitoring Systems
… led to an explosion of research in substitute energy technologies. Traditional batteries are still the most widely used power source for these applications currently but have been blamed for chemical pollution, high maintenance cost, bulky volume, and limited energy capacity. Ambient energy in …
-
Broadband Piezoelectric Energy Harvesting and Vibration Suppression Using Nonlinear Mechanisms
Harvesting ambient vibration energy provides a promising solution to implement self-powered microwatts to milliwatts low-power electronic devices, as an alternative to batteries. Due to the high power density and simple construction, piezoelectric transducers have attracted the most attention in …
-
A study of a piezoelectric energy harvesting system using magnetorheological fluids
This thesis reports the study of a piezoelectric energy harvesting system using a thin layer of magnetorheological fluid as a soft impact mechanism to enhance the frequency of the energy generator. Currently, the major bottleneck of vibration energy harvesting is the dynamic nature of vibrations in …
-
Improving piezoelectric energy harvesting power bandwidth with the bias-flip method
Vibration energy harvesters may be used as robust and reliable sources of energy for low-power devices such as wireless sensors. Of the many type of vibration energy harvesters, the piezoelectric energy harvesting device (PEHD) is favored for its high energy density and ability to self-start. As a …
-
Low resonant frequency beam design for a piezoelectric energy harvesting device
… project deals with powering these sensors by harvesting environmental vibrational energy and eliminating the need for batteries. Using MEMS technology, a thin film Piezoelectric Micropower Generator device could be constructed. The PMPG is simply a cantilever structure tuned to resonate at …
-
Low-Power Piezoelectric Energy Harvesting Circuit to Power Wind Turbine Sensors
… lifetime and the difficulty of maintenance. Energy harvesting offers a possible solution to this issue. By attaching a piezoelectric transducer to the blades of the wind turbine, energy can be harvested from vibrations during operation and used to supply power to a wireless sensor that …
-
Global Nonlinear Analysis of Piezoelectric Energy Harvesting from Ambient and Aeroelastic Vibrations
Converting vibrations to a usable form of energy has been the topic of many recent investigations. The ultimate goal is to convert ambient or aeroelastic vibrations to operate low-power consumption devices, such as microelectromechanical systems, heath monitoring sensors, wireless sensors or …
-
Piezoelectric energy harvesting: vortex induced vibrations in plants, soap films, and arrays of cylinders
… the collective oscillating motion of multiple piezoelectric devices. These devices would be an alternative to rotating turbine designs for low power generation, for use in applications such as remote power generation. A series of inexpensive devices were developed that harvested energy from …
-
Design and analysis of an ASIC for energy harvesting applications
… analysis of the power conditioning circuits of a piezoelectric energy harvesting system. Commercial piezoelectric generators with a frequency range of 26 – 205 Hz were used to convert kinetic energy to electric energy. A 6 stage AC/DC charge pump designed by a previous student was redesigned to …
-
Evaluation of smart-fabric approach to biomechanical energy harvesting
This thesis evaluates the proposed use of piezoelectric energy harvesting methods as a power source for light-up sneakers. Light-up sneakers currently marketed for purposes of pedestrian visibility and personal fashion are powered by primary or secondary batteries; maintenance requirements could …
-
Smart E-Textiles Integrated into Human Health Monitoring Systems
… was redesigned for improved fit and accuracy. Piezoelectric energy harvesting was explored as a possible power source for using this e-textile as a completely portable device. Not only was developing an e-textile to measuring respiratory rate monitoring explored but integrating other devices …
-
Design and reliability-based optimization of the piezoelectric flex transducer
… devices has resulted in a high demand for mobile energy harvesters. The main contribution of this thesis is to optimize the novel piezoelectric energy harvesting device called the piezoelectric flex transducer, which was developed by other researchers for the purpose of harvesting biokinetic …
-
The study and development of distributed devices for concurrent vibration attenuation and energy harvesting
… employs a new perspective of vibrational energy harvesting devices. The first part of the research studies and develops a continuously distributed vibration control device which combines the benefits of point mass-spring-dampers at low frequencies as well as the resistive or dissipative …
-
Electromechanical Modeling of Piezoelectric Energy Harvesters
Vibration-based energy harvesting has been investigated by several researchers over the last decade. The ultimate goal in this research field is to power small electronic components (such as wireless sensors) by using the vibration energy available in their environment. Among the basic transduction …
-
Investigations on Vortex-induced Vibration (VIV) Phenomena of Single-and-double-cylinder Flexible Beam Arrangements of Energy Harvesters
… and the need for periodical replacement, energy-harvesting is an actual alternative as a power source for low power devices in some special areas. And among them, the piezoelectric energy-harvesting, which converts mechanical (vibration) into electric energy, is the fastest development one …
-
A comparison of power harvesting techniques and related energy storage issues
Power harvesting, energy harvesting, power scavenging, and energy scavenging are four terms commonly used to describe the process of extracting useful electrical energy from other ambient energy sources using special materials called transducers that have the ability to convert one form of energy …
-
MICRO-CIRCUIT DIODE FOR ULTRA-LOW-POWER ENERGY HARVESTING
Harvesting energy from ultra-low-power vibration energy sources typically employs a rectifier circuit as the first power conditioning stage. The Schottky diode has a 0.15 V - 0.2 V threshold voltage and can not extract energy efficiently at low voltage. Other technologies such as MOSFET bridge or …
Page 1 of 2