2fsk-based wireless energy and signal synchronous transmission system and method

Abstract

The invention discloses a 2FSK-based wireless energy and signal synchronous transmission system and method. The system is composed of a primary side circuit and a secondary side circuit, in which the energy transmitting circuit and the energy receiving circuit are both double resonant circuits. The side circuit is also provided with a 2FSK modulation circuit, and the secondary side circuit is also provided with a 2FSK demodulation circuit. The 2FSK demodulation circuit includes two signal pickup loops, and the two signal pickup loops are connected to the energy emission circuit respectively. Inductive coupling, the resonant frequencies of the two signal pickup circuits correspond to the two frequencies of the high-frequency inverter signal output by the inverter circuit. The signals output by the two signal pickup circuits are demodulated by the voltage comparator to obtain the signal emitted by the primary circuit. Digital signal. Its significant effects are: wireless energy transmission and information synchronous transmission are realized; the demodulated digital signal can be directly output without an MCU, and the circuit structure is simpler and the cost is lower.

Description

technical field [0001] The invention relates to the technical field of wireless energy signal transmission, in particular, a 2FSK-based wireless energy and signal synchronous transmission system and method. Background technique [0002] With the development and improvement of wireless energy transmission technology, wireless energy transmission technology has been widely used in industrial production, human implanted medical electronics, consumer electronics, electric vehicles, underwater detectors, smart ammunition and other fields; especially based on magnetic resonance The coupled wireless energy transmission technology has the most extensive application prospects, with long transmission distance, high efficiency, moderate power, multiple loads, and strong applicability in free locations. [0003] In the process of wireless energy transmission, many application scenarios need to transmit data. The traditional way is to transmit data through a separate wireless communicati...

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Problems solved by technology

[0003] In the process of wireless energy transmission, many application scenarios need to transmit data. The traditional way is to transmit data through a separate wireless communication module (such as Bluetooth), which is costly and complicated; there are also some technical solutions that are The energy signal is amplitude modulated according to the different signals, and the corresponding digital signal is demodulated by picking up the energy amplitude. Although the signal transmission can be realized, this way of modulating the energy amplitude will affect the energy transmission efficiency. The wireless energy transmission system does not Able to obtain continuous and stable power output

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