Abstract
The researches of wind energy harvesting have been more and more popular in recent years. In the paper, a vibration energy caused by a breeze is harvested with a cantilevered beam using a piezoelectric patch. When a swaging fan applies a breeze environment, the alternating voltage generates from the piezoelectric patch. Moreover, by designing a full wave rectifier, the alternating voltage from the piezoelectric patch is transformed as a DC voltage. Through some experiments, the amplitude of the alternating voltage is about 2.70 V and its frequency is 2.60 Hz (the first natural frequency of the cantilevered beam). And the gained DC voltage is about 2.45 V and can be made a luminous diode be on. These experimental results indicate that vibration energy caused by the breeze can be harvested with a full wave rectifier.
Highlights
With modern electronic technology’s faster and faster development, the circuit system has become more to miniaturization and integration [1]
The wind speed is measured with a anemometer with a distance about 10 cm from the fan in Fig. 3, and the wind speed of the breeze is 3.4 m/s-5.4 m/s
An alternating voltage generated from a piezoelectric patch is collected with the vibration of the cantilevered beam when an alternating breeze acts on the free end of the smart beam
Summary
With modern electronic technology’s faster and faster development, the circuit system has become more to miniaturization and integration [1]. The traditional power supply mode has the characteristics of short life time, high cost, and even cause great pollution to the surrounding environment. It will further affect more widely application of the MEMS in various fields. Wind energy is a kind of clean and renewable energy and is widely existed in the surrounding environment, especially the low-speed breeze. The fluid kinetic energy collection of low-speed breeze is easier to realize than the energy conversion of large rotating wind turbines. The study of wind induced vibration energy collection is the main trend [10]. A BREEZE ENERGY HARVESTING OF VIBRATION CAUSED WITH A CANTILEVERED PIEZOELECTRIC BEAM.
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