Wireless power supply device and method based on lamb wave

A technology of wireless energy supply and transducer, which is applied in circuit devices, battery circuit devices, transportation and packaging, etc., to achieve high transmission efficiency, high energy conversion efficiency, and improved efficiency

Inactive Publication Date: 2017-06-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the above problems, the purpose of the present invention is to provide a wireless energy supply device and method based on Lamb waves, which is used to solve the problem in the prior art t

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  • Wireless power supply device and method based on lamb wave
  • Wireless power supply device and method based on lamb wave
  • Wireless power supply device and method based on lamb wave

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Embodiment Construction

[0029] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0030] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the co...

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Abstract

A wireless power supply device and method based on a lamb wave are provided. The device comprises a signal generator, a voltage amplifier, an excitation transducer, a metal sheet member, a receiving transducer, an energy acquisition circuit and an energy storage element, and has advantages that the Lamb wave in the metal sheet member is used as an energy carrier so as to achieve wireless transmission of energy and to power a structure health monitoring sensor on the metal sheet member, thereby reducing the wiring and maintenance cost of a traditional sensor system and improving system stability. A piezoelectric ceramic transducer is used as a main component, high in conversion efficiency, small in size, and low in cost. Because of an active excitation way, the Lamb wave frequency can be close to the resonant frequency of the excitation and reception transducers, thereby greatly improving the efficiency of the traditional method. The lamb wave belonging to the ultrasonic waveguide is as the energy carrier, so the energy is low in attenuation and high in transmission efficiency. Since the transmission is in a continuous mode, it is not necessary to consider the frequency dispersion effect of the Lamb wave.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic wireless energy transmission, and in particular relates to a wireless energy supply device and method based on Lamb waves. Background technique [0002] Sheet metal components, especially sheet metal parts with a thickness of less than 8mm, are widely used in aerospace, automobile, shipbuilding, pressure vessels, and large chemical containers. Due to damage and destruction of sheet metal components during production and use, it poses a great threat to the safety of its structure. On-line, real-time and effective monitoring through structural health monitoring technology, so that timely detection of fatigue and damage in these materials is very important to prevent accidents. [0003] Structural health monitoring technology needs to use the sensor system integrated or attached to the structure to obtain information related to the structural health status online and in real time, and combine sig...

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Application Information

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IPC IPC(8): H02J50/15H02J7/02
CPCH02J7/025
Inventor 芮小博李一博曾周末刘圆圆封皓黄新敬
Owner TIANJIN UNIV
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