4ASK-based high-speed full-duplex wireless electric energy and data synchronous transmission system
A full-duplex radio and data synchronization technology, applied to electrical components, circuit devices, etc., can solve the problems of slow transmission rate and poor anti-noise performance, and achieve the effect of strong anti-interference, good electromagnetic compatibility, and simple structure
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Embodiment 1
[0079] The 4ASK-based high-speed full-duplex wireless energy power and data synchronous transmission system of this embodiment includes a primary circuit, a secondary circuit and a magnetic coupling unit.
[0080] The primary side circuit includes an inverter unit, a primary side compensation unit, a forward signal modulation unit and a loading unit, a backward signal extraction unit and a demodulation unit. The inverter unit is used to convert the DC voltage signal output by the DC voltage source into a high-frequency AC voltage signal; the primary side compensation unit is used to provide the reactive power required for the operation of the primary circuit and filter out the high-order harmonics output by the inverter circuit wave; the forward signal modulation unit and loading unit are to perform 4ASK modulation on the signal data to be transmitted forward, and load the modulated signal to the energy signal to be transmitted; the backward signal extraction unit and demodulat...
Embodiment 2
[0084] On the basis of Example 1, such as figure 1 As shown, for the power transfer channel, V in with V out are the DC input and output voltages of the wireless power transfer system, L pi 、C pt , L si with C st is the bilateral compensation unit, L pt with L st Self-inductance of the magnetically coupled unit, S p1 -S p4 with S s1 -S s4 The switching signals of the primary side inverter and the secondary side rectifier respectively, C f For the rectifier filter capacitor.
[0085] For the forward data transmission channel, the forward loading unit and the extraction unit are through the data loading transformer T f1 with data loading transformer T f2 Connected in series with the power coupling coil, L f2 、C f1 , L f3 with C f2 form a double harmonic filter, L f5 、C f3 , L f6 with C f4 Symmetrically equal to it, both have 2 series resonant frequencies (ω 1 with ω 3 ) and a parallel resonant frequency (ω 2 ),It can be expressed as:
[0086]
[0087]...
Embodiment 3
[0109] On the basis of Embodiment 1, the mechanism of the forward and backward signal modulation and demodulation units based on 4ASK is consistent, and the forward and backward signal modulation units are as follows: Figure 4 As shown, it includes a four-to-one analog switch, a two-to-one analog switch and a Class A and B power amplifier circuit. When transmitting data 0, the binary strobe signal is 00, and the one-of-four analog switch selects a square wave signal S0 with a duty cycle of 15%; when transmitting data 1, the binary strobe signal is 01, and the analog switch for one-of-four selection Strobe a square wave signal S1 with a duty cycle of 30%; when transmitting data 2, the binary strobe signal is 10, and an analog switch that selects one of four selects a square wave signal S2 with a duty cycle of 45%; when transmitting data 3 , the binary strobe signal is 11, and the one-of-four analog switch strobes a square wave signal S3 with a duty cycle of 60%. The square wa...
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