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Electric energy and signal synchronous wireless transmission method based on soft switching harmonic characteristics

A technology of wireless transmission and signal synchronization, applied in the direction of electrical components, circuit devices, etc., can solve problems such as weak anti-interference ability, low signal transmission rate, and influence on system output voltage, and achieve stable output voltage, high signal transmission rate, and complex low degree of effect

Active Publication Date: 2020-11-13
CHINA UNIV OF MINING & TECH
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Problems solved by technology

These three methods are to realize the signal modulation by changing the input voltage of the inverter, the operating frequency and the phase shift angle, but these traditional modulation methods have the disadvantages of low signal transmission rate, weak anti-interference ability and easy to change the system output voltage. Disadvantages such as causing a large impact

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  • Electric energy and signal synchronous wireless transmission method based on soft switching harmonic characteristics
  • Electric energy and signal synchronous wireless transmission method based on soft switching harmonic characteristics
  • Electric energy and signal synchronous wireless transmission method based on soft switching harmonic characteristics

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Embodiment Construction

[0037] The realization principle of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 Shown is the system structure diagram of this implementation, specifically including DC power supply 1, high-frequency inverter circuit 2, signal modulation module 3, primary side power transmission circuit 4, secondary side power transmission circuit 5, signal detection circuit 6 and signal demodulation Circuit 7.

[0039] The signal modulation module 3 controls the operating frequency of the high-frequency inverter circuit 2 through the binary data of the baseband signal, so as to realize the transmission of digital signals. The power transmitting circuit 4 is composed of transmitting coil L p and resonant capacitor C p Composed in series, the internal resistance of the transmitting coil is R p . The square wave voltage output by the high frequency inverter circuit 2 is loaded on the ...

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Abstract

The invention provides an electric energy and signal synchronous wireless transmission method based on soft switching harmonic characteristics. According to the method, a stroboscopic mapping model isadopted to solve all soft switch working points existing in the system, the current resonance characteristics and harmonic content of a primary side current coil of the system under the soft switch working points are calculated and analyzed, fundamental waves of an inverter of the wireless power transmission system at the soft switch working points are taken as energy carriers, and third harmonics are taken as signal carriers. Based on the frequency deviation amplification effect, a binary frequency shift keying (2FSK) modulation method is adopted to achieve signal modulation, a demodulationcircuit is designed to achieve signal demodulation, and finally synchronous wireless transmission of electric energy and signals is achieved. The method can meet the requirements of high-speed and high-accuracy wireless transmission of signals while ensuring high-quality and high-stability electric energy transmission of the system.

Description

technical field [0001] The invention belongs to the technical field of wireless energy transmission, in particular to a method and system for synchronous wireless transmission of electric energy and signals based on soft-switching harmonic characteristics, and is a novel energy signal synchronous transmission technology. Background technique [0002] Wireless power transmission technology can overcome a series of disadvantages of friction, aging and poor contact caused by traditional wired power transmission, so it has received extensive attention from many scholars at home and abroad. Household and other fields have extensive application research and development. For most applications, stable signal transmission between the primary and secondary coils has become a hot spot in the field of wireless power technology, including output voltage feedback, load identification, foreign object detection, and multi-load simultaneous charging control. transmission. [0003] At prese...

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Application Information

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IPC IPC(8): H02J50/12H02J50/80H02J50/70
CPCH02J50/12H02J50/80H02J50/70Y02B70/10
Inventor 夏晨阳吴镇赵书泽周磊贾仁海廖志娟伍小杰程德强
Owner CHINA UNIV OF MINING & TECH
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