Non-contact energy and signal synchronous transmission system and transmission method

A signal synchronization and transmission system technology, applied in transmission systems, near-field transmission systems, electrical components, etc., can solve problems such as the influence of system energy transmission, low signal transmission rate, etc., to improve stability, reduce bit error rate, The effect of improving energy utilization

Active Publication Date: 2018-08-10
CHINA UNIV OF MINING & TECH
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AI Technical Summary

Problems solved by technology

[0006] For the several energy and signal synchronous transmission methods proposed above, the signal transmission rate is generally relatively low, and it also has an impact on the system energy transmission

Method used

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  • Non-contact energy and signal synchronous transmission system and transmission method
  • Non-contact energy and signal synchronous transmission system and transmission method
  • Non-contact energy and signal synchronous transmission system and transmission method

Examples

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specific Embodiment

[0041] Such as figure 1 As shown, the DC power supply 1 generates a high-frequency AC voltage square wave after passing through the high-frequency inverter 2. When the duty cycle of the inverter is 50%, the Fourier expression of the inverted AC voltage square wave is

[0042]

[0043] In the formula, U d is the DC power supply voltage value, ω 0 High-frequency inverter operating angular frequency, t is time.

[0044] The high-frequency AC square wave voltage passes through the DC blocking capacitor and the transmitting coil to generate a triangular wave current, and the Fourier decomposition expression of the triangular wave current is

[0045]

[0046] In the formula, I pm Is the amplitude of the triangular wave current, and k is the harmonic order.

[0047] It can be seen from the above formula that the triangular wave current contains rich harmonics, so the fundamental wave is used to transmit energy, and the harmonics are used to transmit signals. After the tria...

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Abstract

The invention discloses an energy and signal synchronous transmission system and a transmission method in a wireless power transmission technology, which is applicable to the field of wireless charging. The system comprises a DC power supply, a high-frequency inverter, a primary-side energy transmitting module, a signal modulation module, a secondary-side energy receiving module, a signal demodulation module and a load, a blocking capacitor and the primary-side energy transmitting module are connected in series after the high-frequency inverter so as to form a triangular wave extraction channel; and the signal modulation module loads baseband signals to triangular waves through changing the operating frequency of the high-frequency inverter, the energy and signals are simultaneously transmitted to the secondary side through a loosely coupled transformer, the energy and the signals in the channel are separated through the secondary-side energy receiving module and the signal demodulation module, and synchronous transmission of the energy and the signals is realized. The non-contact energy and signal synchronous transmission system is stable in output power, high in signal transmission rate and small in system size.

Description

technical field [0001] The invention relates to an energy and signal synchronous transmission system and transmission method, and is especially suitable for a non-contact energy and signal synchronous transmission system and transmission method. Background technique [0002] The traditional method of power transmission is to transmit power from the grid to the electrical equipment through connecting equipment such as cables, and this physical connection will cause electric sparks or damage due to frequent movement and exposure, which not only greatly shortens the life of electrical equipment. It also seriously threatens the safety of electricity use, especially in coal mines, underwater and other harsh environments, and may even cause serious electrical accidents. Therefore, in its present form, the demand for non-contact power transfer technology has greatly increased. Non-contact power transmission technology, as the name suggests, no longer needs connecting equipment suc...

Claims

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Application Information

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IPC IPC(8): H02J50/12H04B5/00
CPCH02J50/12H04B5/263H04B5/72H04B5/79
Inventor 夏晨阳朱文婷朱从刘利民马念伍小杰陈俊
Owner CHINA UNIV OF MINING & TECH
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