CN205265377U - Wireless power and signal synchronization transmission system based on magnetic coupling resonance - Google Patents

Abstract

The utility model is a wireless energy and signal synchronous transmission system based on magnetic coupling resonance. Signal modulation system, forward signal modulation system at the transmitting end and forward signal demodulation system at the receiving end. While realizing wireless energy transmission, the system also realizes half-duplex communication of signals. The system belongs to the frontier cross field of high-frequency electromagnetic theory engineering and signal transmission application, and solves the problem of synchronous wireless transmission of electric energy and signals. The utility model is a system with simple structure, high reliability and good electromagnetic compatibility, and has great application prospects.

Description

Wireless Power and Signal Synchronous Transmission System Based on Magnetic Coupling Resonance

technical field

The invention relates to a magnetic coupling resonance-based wireless energy and signal synchronous transmission system. In particular, it relates to a wireless synchronous transmission system of energy and signal with simple structure, high reliability and good electromagnetic compatibility.

Background technique

With the development of wireless power transmission technology, people's requirements for automation and intelligence are increasing. Synchronous transmission technology of wireless power and signal will become a key technology. The synchronous transmission of wireless energy and signals will free the terminal from the double constraints of power lines and signal lines, enhancing the flexibility and wide applicability of the equipment.

The synchronous transmission technology of wireless energy and signals can be widely used in various occasions such as intelligent transportation, intelligent communication, manufacturing, and medical equipment.

Contents of the invention

The technical problem to be solved by the present invention is to propose a wireless energy and signal synchronous transmission system based on magnetic coupling resonance, which realizes half-duplex two-way communication of information during the energy transmission process. The system has the characteristics of simple structure, high reliability and good electromagnetic compatibility.

The technical proposal of the present invention is a wireless energy and signal synchronous transmission system based on magnetic coupling resonance. It mainly includes the primary part and the secondary part.

A wireless power and signal synchronous transmission system based on magnetic coupling resonance, including a power supply (1), a power and signal transmitting system (2), a power and signal receiving system (3), a load (4), and a reverse signal solution at the transmitting end modulation system (5), a reverse signal modulation system (6) at the receiving end, a forward signal modulation system (7) at the transmitting end and a forward signal demodulation system (8) at the receiving end; it is characterized in that the power supply (1) is connected with the electric energy and the signal The transmitting system (2) is connected, and the electric energy and signal transmitting system (2) is respectively connected with the forward signal modulation system (7) of the transmitting end and the reverse signal demodulation system (5) of the transmitting end. The power and signal receiving system (3) is respectively connected to the receiving end reverse signal modulation system (6) and the receiving end forward signal demodulation system (8), the power and signal receiving system (3) is connected to the load (4), and the power and signal receiving system (3) is connected to the load (4). The signal transmitting system (2) is not connected with the electric energy and signal receiving system (3), and performs electric energy and signal transmission in a wireless manner.

The power and signal transmission system includes: a radio frequency source (21), a multiplier (22), a power amplifier (23), a transmitter coding unit (24), a transmitter control signal (25), a transmitter feedback signal (26) ), feedback demodulation circuit (27), reverse signal extraction coil L ₁ (28), energy transmitting coil L ₂ (29), feedback signal decoding unit (30), transmitting end energy resonant coil L ₃ (20); It is characterized in that the radio frequency source (21) is connected with the multiplier (22), the control signal of the transmitting end (25) is connected with the encoding unit (24) of the transmitting end, the encoding unit (24) of the transmitting end is connected with the multiplier (22), and the multiplication The device (22) is connected with the power amplifier (23), the power amplifier (23) is connected with the energy transmission coil L ₂ (29), the reverse signal extraction coil L ₁ (28) is connected with the feedback demodulation circuit (27), and the feedback solution The modulation circuit (27) outputs the transmitting end feedback signal (26), the energy transmitting coil L ₂ (29) is not connected to the transmitting end energy resonant coil L ₃ (20) and transmits energy wirelessly; the reverse signal extracting coil L ₁ ( 28) It is also not connected to the energy transmitting coil L ₂ (29), and the reverse signal extracting coil L ₁ (28) extracts magnetic field change energy from space in a wireless manner.

The power and signal receiving system includes: receiving end energy resonance coil L ₄ (31), forward signal extraction coil L ₆ (32), demodulation unit (33), control signal (34), rectification unit (35) , filtering unit (36), pressure changing unit (37), compensation selection unit (38), feedback coding unit (39), receiving end feedback signal (40), decoding unit (41), energy receiving coil L ₅ (42 ), the load (4); it is characterized in that the energy receiving coil L ₅ (42) is connected with the rectification unit (35), the rectification unit (35) is connected with the filter unit (36), and the filter unit (36) is connected with the pressure changing unit ( 37), the pressure change unit (37) is connected to the load (4); the receiving end feedback signal (40) is connected to the feedback coding unit (39), the feedback coding unit (39) is connected to the compensation selection unit (38), and the compensation selection The unit (38) is connected to the energy receiving coil L ₂ (42); the forward signal extraction coil L ₆ (32) is connected to the demodulation unit (33), and the demodulation unit (33) demodulates the control signal (34); The terminal energy resonant coil L ₄ (31) is connected with the energy receiving coil L ₅ (42) and transmits energy wirelessly; the forward signal extraction coil L ₆ (32) is not connected with the energy receiving coil L ₆ (42) and forward The signal extraction coil L ₆ (32) extracts magnetic field variation energy from space.

The radio frequency source is used to generate a sinusoidal signal with high frequency and low power.

The power amplifier amplifies weak signals.

The multiplier implements the multiplication of two mutually uncorrelated signals, that is, the output signal is proportional to the product of the two input signals.

The encoding unit compiles and converts control signals (such as bit streams) or data into signal forms that can be used for communication, transmission and storage.

The modulation unit and the feedback signal demodulation are to put the message into the message carrier, which is convenient for transmission or processing.

The demodulation unit and the feedback signal demodulation circuit are a process of recovering a message from the modulated signal carrying the message.

The feedback signal decoding unit and the decoding unit are the inverse process of encoding, and at the same time remove the noise mixed in the bit stream during propagation. Decoding is used to translate a series of signals representing a certain item of information into the original information.

The compensation selection unit selects different compensation forms according to the high and low level information of the feedback encoding unit.

The rectification unit is used to rectify the energy received by the energy receiving coil.

The filtering unit is used to filter out clutter from the electric energy rectified by the rectifying unit.

The voltage conversion unit converts the electric energy after the filter unit to voltage conversion to obtain electric energy suitable for the load.

The invention has the advantages that half-duplex communication of signals can be realized while realizing wireless energy transmission. Moreover, the whole system has the characteristics of simple structure, high reliability and good electromagnetic compatibility. Further improve the automation of the system.

Description of drawings

Figure 1 is the overall block diagram of the design system;

Figure 2 is a system block diagram of the primary side;

Figure 3 is a system block diagram of the secondary side.

detailed description

The invention provides a wireless energy and signal synchronous transmission system based on magnetic coupling resonance with simple structure, high reliability and good electromagnetic compatibility. The wireless power and signal synchronous transmission system based on magnetic coupling resonance of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

The technical proposal of the present invention is a wireless energy and signal synchronous transmission system based on magnetic coupling resonance. It mainly includes the primary part and the secondary part.

As shown in Figure 1: the primary side includes a radio frequency source, a multiplier, a power amplifier, a transmitter encoding unit, a transmitter control signal, a transmitter feedback signal, a feedback demodulation circuit, a reverse signal extraction coil L ₁ , and an energy transmitter coil L ₂ , the energy resonant coil L ₃ at the transmitting end.

The secondary part includes receiving end energy resonant coil L ₄ , forward signal extraction coil L ₆ , demodulation unit, control signal, rectification unit, filter unit, voltage conversion unit, load, compensation selection unit, feedback encoding unit, receiving end feedback Signal and energy receiving coil L ₅ .

As shown in Fig. 2: In the primary side part, the radio frequency source generates a sinusoidal signal with the same resonance frequency as the energy resonance coil. The control signal is encoded by the encoding unit and becomes different high level and low level. High level represents "1" and low level represents "0". Then the sinusoidal signals generated by different high and low levels and radio frequency sources pass through the multiplier and become energy signals with different amplitudes. "1" and the sine wave pass through the multiplier to obtain a sine wave with an amplitude of A ₁ , and "0" and the sine wave pass through the multiplier to obtain a sine wave with an amplitude of A ₂ . The modulated wave composed of amplitude A ₁ and amplitude A ₂ is amplified by the power amplifier. _A sine wave of amplitude A1 _{becomes a} sine wave of amplitude A3, and a sine wave of amplitude A2 becomes a sine wave of amplitude A4 _. The amplified modulated wave composed of amplitude A ₃ and amplitude A ₄ is loaded to the energy transmitting coil L ₂ , and then generates high-frequency electromagnetic waves that can be generated in the air, and then transmits the energy of the electromagnetic wave through the energy resonance coil L ₃ .

As shown in Figure 3: in the secondary part, the energy resonance coil L ₄ receives the energy transmitted by the energy resonance coil L ₃ , and then the energy resonance coil L ₄ transmits the energy to the energy receiving coil L ₅ through electromagnetic waves. Then the sine wave with varying amplitude is received, and after passing through the rectification unit, filter unit, and voltage conversion unit, it becomes a stable voltage and supplies it to the load. The signal extraction coil L ₆ passes through the demodulation unit and the decoding unit to obtain the control signal of the primary side.

As shown in FIG. 2 : the reverse signal transmission of the secondary part is characterized in that: the feedback signal passes through the feedback encoding unit and then obtains different high levels and low levels. High level represents "1" and low level represents "0". Then "1" and " ₀ " represent different compensations for the energy receiving coil L5, and due to different compensations, the current magnitude of the energy transmitting coil L2 _on the primary side changes. Then the signal extraction coil L ₁ on the primary side passes the extracted signal through a feedback signal demodulation unit and a feedback signal decoding unit to obtain a feedback signal.

The above schematically describes the present invention and its embodiments, and the description is not limiting, and what is shown in the drawings is only one of the embodiments of the present invention. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, adopt other forms of similar components or other forms of layout of each component, without creatively designing a structure similar to the technical solution. The technical solutions and embodiments should all belong to the protection scope of the present invention.

Claims (1)

1. A wireless power and signal synchronous transmission system based on magnetic coupling resonance, including a power supply (1), a power and signal transmitting system (2), a power and signal receiving system (3), a load (4), and the transmitting end reverse A signal demodulation system (5), a reverse signal modulation system (6) at a receiving end, a forward signal modulation system (7) at a transmitting end and a forward signal demodulation system (8) at a receiving end; it is characterized in that the power supply (1) and the electric energy Connected with the signal transmitting system (2), the electric energy and the signal transmitting system (2) are respectively connected with the forward signal modulation system (7) of the transmitting end and the reverse signal demodulation system (5) of the transmitting end, and the electric energy and the signal receiving system (3) It is respectively connected with the reverse signal modulation system (6) at the receiving end and the forward signal demodulation system (8) at the receiving end, and the electric energy and signal receiving system (3) is connected with the load (4); the electric energy and signal transmitting system (2) includes: radio frequency source (21), multiplier (22), power amplifier (23), transmitter encoding unit (24), transmitter control signal (25), transmitter feedback signal (26), feedback demodulation circuit (27), Reverse signal extraction coil L ₁ (28), energy transmitting coil L ₂ (29), transmitting end energy resonant coil L ₃ (20); the radio frequency source (21) is connected with the multiplier (22), and the transmitting end control signal (25 ) is connected with the transmitting end encoding unit (24), the transmitting end encoding unit (24) is connected with the multiplier (22), the multiplier (22) is connected with the power amplifier (23), and the power amplifier (23) is connected with the energy transmitting coil L ₂ (29) is connected, and the reverse signal extraction coil L ₁ (28) is connected with the feedback demodulation circuit (27), and the feedback demodulation circuit (27) outputs the transmitter feedback signal (26); the electric energy and signal receiving system (3) includes : receiving end energy resonant coil L ₄ (31), forward signal extraction coil L ₆ (32), demodulation unit (33), control signal (34), rectification unit (35), filter unit (36), voltage changer unit (37), load (4), compensation selection unit (38), feedback encoding unit (39), receiving end feedback signal (40), decoding unit (41), energy receiving coil L ₅ (42); energy receiving The coil L ₅ (42) is connected to the rectification unit (35), the rectification unit (35) is connected to the filter unit (36), the filter unit (36) is connected to the pressure changing unit (37), and the pressure changing unit (37) is connected to the load ( 4) connected; the receiving end feedback signal (40) is connected to the feedback coding unit (39), the feedback coding unit (39) is connected to the compensation selection unit (38), and the compensation selection unit (38) is connected to the energy receiving coil L ₅ (42) connected; the forward signal extraction coil L ₆ (32) is connected to the demodulation unit (33), and the demodulation unit (33) demodulates the control signal (34).