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Title:
ELECTROMAGNETIC INDUCTION PRINCIPLE BASED NONLINEAR RESONANCE TYPE MAGNETIC FIELD ENERGY COLLECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/001343
Kind Code:
A1
Abstract:
Disclosed in the present invention is an electromagnetic induction principle based nonlinear resonance type magnetic field energy collecting device, comprising: a fixing framework; a rotation unit comprising a rotatable permanent magnet and at least one shaft; at least one winding coil; and at least one fixed permanent magnet which restricts the rotatable permanent magnet to a position of balance. When in operation, the rotatable permanent magnet performs a periodic shift around the position of balance under the action of a magnetic field generated by a current-carrying conductor; a moving magnetic field generated by means of said shifts can induce in at least one winding coil enough electrical energy to support the normal work of a sensing node; and the strength of a direct current bias magnetic field is adjusted so that the rotatable permanent magnet can achieve a state of resonance under power frequency conditions, the state of resonance having non-linear characteristics. The collecting device has the advantages of high power density, a wide frequency band, high reliability, and of being non-invasive and low in cost. The device can better meet the demands of magnetic field energy collection at the periphery of the conductor, and can ensure the sensing device supplies energy reliably.

Inventors:
HU, Jun (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
WANG, Zhongxu (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
HE, Jinliang (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
WANG, Shanxiang (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
ZHAO, Gen (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
OUYANG, Yong (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
Application Number:
CN2018/092247
Publication Date:
January 03, 2019
Filing Date:
June 21, 2018
Export Citation:
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Assignee:
TSINGHUA UNIVERSITY (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
International Classes:
H02K35/02
Foreign References:
CN107196422A2017-09-22
CN106160395A2016-11-23
CN104038102A2014-09-10
US20070040455A12007-02-22
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301, Trade BuildingZhaolanyuan, Tsinghua University,Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
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