Parallel wireless transmission system of power and signal controlled by multi-modulated wave compound spwm
A technology for wireless transmission and modulation of waves, applied in transmission systems, circuit devices, electrical components, etc., can solve problems such as slow transmission rates, and achieve the effects of increasing data volume, avoiding cross-coupling, and simplifying structure
Active Publication Date: 2021-11-19
CHINA UNIV OF MINING & TECH
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Problems solved by technology
The existing single-coil shared channel transmission technology generally has the problem of slow transmission rate
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Embodiment 1
[0041] In order to better describe a multi-modulation wave compound SPWM controlled power and signal parallel wireless transmission system and its control method, three signal transmission channels are selected to transmit power in parallel with a rate of 50kbit / s (transmission period T s =20us) serial binary bit as an example analysis, considering the parameter design condition in the claim description 3, select the electric energy modulation wave frequency f 0 =200kHz, signal channel 1 corresponds to the characteristic frequency f of the modulating wave 1 =600kHz, signal channel 2 corresponds to the characteristic frequency f of the modulating wave 2 =1000kHz, signal channel 3 corresponds to the characteristic frequency f of the modulating wave 3 = 1400kHz.
[0042] Step 1: Design the system structure:
[0043] A parallel wireless transmission system of electric energy and signals controlled by multi-modulation wave composite SPWM includes an AC power supply, a rectificat...
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The invention proposes a parallel wireless transmission system of electric energy and signals controlled by multi-modulation wave composite SPWM, including a primary circuit and a secondary circuit. In the primary side circuit, the high-speed serial bits form n-way parallel binary sequences through the encoder and send them to the multi-modulation wave composite SPWM control circuit for amplitude modulation modulation, and then output composite pulse waves based on SPWM control, which are generated by the primary side coil in the magnetic coupling coil Composite high frequency current. In the secondary circuit, the secondary coil and the secondary power compensation capacitor form a power transmission channel, which separates the frequency component of the power modulation wave in the composite high-frequency current to supply power to the load resistor, and the signal separation channel network separates n channels of signal modulation with different frequencies Wave component, the signal demodulation circuit network demodulates the signal and sends it to the decoder to recover high-speed serial bits. The invention realizes no cross-coupling interference and stable parallel synchronous transmission of electric energy and multi-channel signals, and effectively improves the signal transmission rate while ensuring the stability of electric energy.
Description
technical field [0001] The invention proposes a parallel wireless transmission system of electric energy and signals controlled by multi-modulated wave composite SPWM, which belongs to the technical field of wireless energy transmission. Background technique [0002] With the increasingly widespread application of smart electronic products, wireless power transfer technology has attracted more and more attention. In many cases, the system still needs to provide additional wireless communication capabilities on the basis of power transmission, such as underwater wireless exploration, human built-in equipment, etc. The synchronous parallel transmission of wireless power signals has gradually become an important topic to meet the needs of future development. [0003] Wireless Power Transfer (WPT for short) was first born in the United States in the 19th century. It is a new power access mode that realizes the transmission of electric energy from the source device to the power...
Claims
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IPC IPC(8): H04B14/02H04B14/04H02J50/80H02J50/20H02J50/12
CPCH04B14/023H04B14/026H04B14/042H02J50/12H02J50/20H02J50/80
Inventor 夏晨阳张宏泰魏楠吴镇贾仁海廖志娟刘旭伍小杰
Owner CHINA UNIV OF MINING & TECH