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 formed by a primary circuit and a secondary circuit. An energy emission circuit and an energy receiving circuit are both double resonance circuits. The primary circuit is provided with a 2FSK modulation circuit. The secondary circuit is provided with a 2FSK demodulation circuit. The 2FSK demodulation circuit includes two signal pickup loops. The two signal pickup loops are inductively coupled to the energy emission circuit. The resonant frequencies of the two signal pickup loops correspond to the two frequencies of high frequency inversion signals output by an inversion circuit respectively. Signals output from the two signal pickup loops demodulate digital signals emitted by the primary circuit through a voltage comparator. The substantial effects are that wireless energy transmission and information synchronous transmission are achieved, demodulated digital signals can be directly output without an MCU, 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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