Method and system for realizing near-field communication based on converter inductance or transformer leakage inductance

A near-field communication and converter technology, applied in near-field transmission systems, transmission systems, electrical components, etc., to solve problems such as inability to transmit information

Active Publication Date: 2022-03-25
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above-mentioned patents and documents, there is an electrical connection between the signal sending end and the receiving end, which belongs to wired communication. If there is no electrical connection between the signal generating device and the signal receiving device, the transmission of information cannot be carried out.

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  • Method and system for realizing near-field communication based on converter inductance or transformer leakage inductance
  • Method and system for realizing near-field communication based on converter inductance or transformer leakage inductance
  • Method and system for realizing near-field communication based on converter inductance or transformer leakage inductance

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Embodiment Construction

[0027] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] figure 1 It is a structural block diagram of the system for realizing near field communication based on the converter inductance or transformer leakage inductance of the present invention, and the system includes a power electronic converter, a controller and a signal receiving circuit. Wherein: the power electronic converter includes at least one inductor or transformer element A1 and a switching device, the converter transmits the modulated information to the current of A1 through the driving signal of the switching device modulated by the power / information composite PWM, and uses the near field The magnetic field is sent to the outer space.

[0029] The signal receiving circuit includes a magnetic field sensor, a signal conditioning and filtering...

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Abstract

The invention discloses a method and system for realizing near-field communication based on converter inductance or transformer leakage inductance. The converter includes at least one inductance or transformer element A1 and a switching device, and the converter uses power / information composite PWM The modulated switching device driving signal transmits the modulated information to the current of the inductor or transformer element A1, and sends it to the external space in the form of a near-field magnetic field. Finally, data reception is realized by detecting the near-field magnetic field. Data modulation can be performed on the power electronic converter to realize near-field communication. The signal receiving end does not need to add capacitors to decouple power and information, and there is no strict limit on the number of signal receiving ends. On this basis, various data modulation methods can be realized, including FSK, PSK, DPSK, FH‑DPSK modulation, etc.

Description

technical field [0001] The invention belongs to the technical field of wireless near field communication, and in particular relates to a method and a system for realizing near field communication based on converter inductance or transformer leakage inductance. Background technique [0002] With the development of information technology, the network of information communication has gradually extended to the wider physical world. The rise and development of the Internet of Things requires that all kinds of electrical equipment and other external equipment can communicate with each other. In order to simplify the electrical connection, the power line carrier communication technology (PLC) can be used to realize the data transmission. However, traditional PLC communication requires additional signal modulation and demodulation circuits, which increases the complexity of the circuit, and for low-power and small-volume equipment, adding additional circuits reduces the power densit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B5/00H02J50/10
CPCH04B5/0075H02J50/10
Inventor 陈竞辉刘科明吴建德
Owner ZHEJIANG UNIV
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