Wireless energy and analog-digital mixed signal synchronous transmission circuit and method based on coaxial coil

Abstract

The invention discloses a wireless energy and analog-digital mixed signal synchronous transmission circuit and method based on a coaxial coil, and relates to the technical field of wireless power transmission. The technical problems that in the prior art, an existing transmission system only considers single digital signal transmission, the requirement for system analog and digital diverse signal mixed transmission is difficult to meet, high quantization errors are generated, and real-time performance and precision are difficult to consider at the same time are solved. According to the technical scheme provided by the invention, the wireless energy and analog-digital mixed signal synchronous transmission circuit based on the coaxial coil comprises a power channel and a communication channel, the power channel comprises a direct-current power supply, an inverter, a compensation circuit I, a power coil, a compensation circuit II and a rectifier; the communication channel comprises a signal modulation part, a signal transceiving circuit, a communication coil, a filter and a demodulation circuit; the signal modulation part comprises an analog signal modulation circuit and a digital signal modulation circuit. The device is suitable for wireless power supply and signal transmission.

Description

Technical Field

[0001] It relates to the field of wireless power transmission technology, and specifically relates to a system for synchronously transmitting energy and analog-digital hybrid modulation signals. Background Art

[0002] Wireless power transmission (WPT) is widely used in the field of underwater power transmission in the ocean, such as underwater unmanned equipment and deep-sea sensors, due to its flexible, safe and convenient power supply characteristics. Information interaction often accompanies wireless power supply, such as the feedback of control information and the transmission of monitoring information. Therefore, data transmission is required while wireless power is being transmitted. For data transmission during wireless power transmission, traditional underwater acoustic communication has the problem of low communication rate, and electromagnetic communication methods such as WiFi, Zigbee, and Bluetooth have problems such as high latency and high attenuation. Therefore, the technology of simultaneous wireless power and data transmission (SWPDT) is considered a potential solution to these challenges.

[0003] Previous studies only considered the transmission of digital signals. In control systems that require fine adjustment and real-time feedback, single digital signal transmission is difficult to meet the requirements. For example, in the scenario of an underwater sensor network in the sea, information interaction of control signals and feedback signals is carried out between the base station and the sensors, and the sensors transmit continuous signals such as monitored temperature, pressure, and seismic activity parameters to the energy base station. For such a system with mixed transmission of digital and analog signals, the method of single digital signal transmission has great limitations, manifested as (1) only using digital modulation for transmission will inevitably use additional ADC chips, increasing the complexity of the hardware circuit, occupying a large amount of frequency band resources, introducing quantization errors, and increasing system costs. (2) Digital signals such as control signals require high accuracy in transmission, while analog signals such as monitoring signals require high precision. When both are transmitted as digital signals, the accuracy characteristics of the monitoring signals are damaged, and the system performance is reduced. Summary of the Invention

[0004] To solve the technical problems existing in the prior art, that is, the existing wireless power supply and data transmission systems only consider digital signal transmission, and when there is a mixed transmission of analog and digital signals, only using digital communication will introduce quantization errors and the signal transmission accuracy will decrease. Considering the above challenges, this paper proposes a synchronous transmission scheme for underwater wireless power and analog-digital hybrid signals based on coaxial coils. The technical solution provided by the present invention is as follows:

[0005] A synchronous transmission circuit for wireless energy and analog-digital hybrid signals based on coaxial coils, the circuit comprising:

[0006] A power channel and a communication channel;

[0007] The power channel includes: a DC power supply, an inverter, a first compensation circuit, and a primary power coil, as well as a secondary power coil, a second compensation circuit, and a rectifier;

[0008] The communication channel includes: a signal modulation section, a signal transceiver circuit, and a primary communication coil, as well as a secondary communication coil, a filter, and a demodulation circuit;

[0009] The inner ring of the coaxial coil is a communication coil, and the outer ring of the coaxial coil is a power coil;

[0010] Both ends of the primary signal transceiver circuit are sequentially connected to both ends of the primary communication coil, and both ends of the secondary signal transceiver circuit are connected to both ends of the secondary communication coil;

[0011] The first compensation circuit of the power channel is connected in parallel across both ends of the primary power coil, and the second compensation circuit is connected in parallel across both ends of the secondary power coil.

[0012] Furthermore, a preferred embodiment is provided. For a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on a coaxial coil, it is characterized in that the signal modulation section, the signal transceiver circuit, and the primary communication coil are sequentially connected in series, and the secondary communication coil, the filter, and the demodulation circuit are sequentially connected in series; the signal modulation section includes an analog signal modulation circuit and a digital signal modulation circuit.

[0013] Furthermore, a preferred embodiment is provided. For a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on a coaxial coil, it is characterized in that the modulation signals generated by the analog signal modulation circuit and the digital signal modulation circuit are connected to the signal transceiver circuit in a parallel superposition manner.

[0014] Furthermore, a preferred embodiment is provided. For a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on a coaxial coil, it is characterized in that the demodulation circuit is connected in parallel across both ends of the secondary communication coil.

[0015] Furthermore, a preferred embodiment is provided. For a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on a coaxial coil, it is characterized in that the output end of the rectifier serves as the output end of the circuit.

[0016] Based on the same inventive concept, the present invention also provides a method for synchronous transmission of wireless energy and analog-digital hybrid modulation signals. The method is applied to the circuit described above and includes:

[0017] In the communication path, steps of converting binary data into a high-frequency data carrier and converting an analog signal into a high-frequency modulated signal;

[0018] The step of sending the high-frequency modulated signal after modulating and mixing the analog signal and the digital signal to a transmission path and a corresponding data transceiver;

[0019] The step of restoring the original transmitted digital signal and analog signal according to the high-frequency modulated signal;

[0020] In the power transmission path, the step of converting direct current into high-frequency alternating current;

[0021] The step of transforming the high-frequency alternating current to a preset voltage and then rectifying it into direct current as the output.

[0022] Furthermore, a preferred embodiment is provided, in which the high-frequency modulated signal is sent to the signal transmission path and the corresponding data transceiver through a communication coil.

[0023] Furthermore, a preferred embodiment is provided, in which the high-frequency modulated signal passing through the secondary communication coil undergoes filtering and sampling demodulation to restore the original transmitted digital signal and analog signal.

[0024] Based on the same inventive concept, the present invention also provides a computer storage medium for storing a computer program, and when the computer program is read by a computer, the computer executes the method.

[0025] Based on the same inventive concept, the present invention also provides a computer, including a processor and a storage medium, and when the processor reads the computer program stored in the storage medium, the computer executes the method.

[0026] Compared with the prior art, the beneficial effects of the technical solution provided by the present invention are as follows:

[0027] A wireless energy and analog-digital hybrid signal synchronous transmission circuit provided by the present invention can, while the system transmits power, realize the independent transmission of digital signals and analog signals using different modulation methods, retain the characteristics of high reliability of digital signals and high accuracy of analog signals, and improve the overall performance of the system.

[0028] A wireless energy and analog-digital hybrid signal synchronous transmission circuit provided by the present invention designs a coaxial planar coupling coil and analyzes a method for reducing the crosstalk between the power channel and the communication channel through coil design, and the coupling mechanism has a simple structure.

[0029] A wireless energy and analog-digital hybrid signal synchronous transmission circuit provided by the present invention uses distributed compensation capacitors to greatly reduce the voltage stress at the transceiver ports.

[0030] It is suitable for applications in wireless power supply and data transmission work. Description of the Drawings

[0031] Figure 1Schematic circuit diagram of a wireless energy and analog-digital hybrid signal synchronous transmission system mentioned in Embodiment 1

[0032] Figure 2 Schematic equivalent circuit diagram of the power channel mentioned in Embodiment 1;

[0033] Figure 3 Schematic equivalent circuit diagram of the communication channel mentioned in Embodiment 1;

[0034] Figure 4 Graph showing the variation of the circuit gain Gs with the self-inductance L of the coil and the frequency f mentioned in Embodiment 1;

[0035] Figure 5 Schematic diagram of the mathematical model of the communication power co-transmission system based on coaxial coils mentioned in Embodiment 1;

[0036] Figure 6 Schematic diagram of the system parameters mentioned in Embodiment 11;

[0037] Figure 7 Picture of the physical object of the system mentioned in Embodiment 11;

[0038] Figure 8 Picture of the coaxial coil mentioned in Embodiment 11;

[0039] Figure 9 Schematic diagram of the digital signal and analog signal transmission mentioned in Embodiment 11;

[0040] Among them, (a) represents bidirectional data transmission, and (b) represents unidirectional analog signal transmission;

[0041] Figure 10 Schematic diagram of the waveforms of power transmission and simultaneous transmission of analog-digital hybrid signals mentioned in Embodiment 11; Specific implementation mode

[0042] To make the advantages and beneficial effects of the technical solution provided by the present invention more clearly reflected, the technical solution provided by the present invention will now be further described in detail with reference to the accompanying drawings. Specifically:

[0043] Embodiment 1. Combining Figures 1-5 To illustrate this embodiment, this embodiment provides a wireless energy and high-speed data synchronous transmission circuit, and the circuit includes:

[0044] A power channel and a communication channel;

[0045] The power channel includes: a DC power supply, an inverter, a first compensation circuit, and a primary power coil, as well as a secondary power coil, a second compensation circuit, and a rectifier;

[0046] The communication channel includes: a signal modulation section, a signal transceiver circuit, and a primary communication coil, as well as a secondary communication coil, a filter, and a demodulation circuit;

[0047] The inner ring of the coaxial coil is the communication coil, and the outer ring of the coaxial coil is the power coil;

[0048] Both ends of the primary side signal transceiver circuit are sequentially connected to both ends of the primary communication coil, and both ends of the secondary side signal transceiver circuit are connected to both ends of the secondary communication coil;

[0049] The first compensation circuit of the power channel is connected in parallel across both ends of the primary power coil, and the second compensation circuit is connected in parallel across both ends of the secondary power coil.

[0050] Specifically,

[0051] This embodiment is to solve the problem that the existing wireless energy and data synchronous transmission system only considers digital signal transmission. When there is a mixed transmission of analog signals and digital signals, only using digital communication will introduce quantization errors, increase the complexity of the hardware circuit, and damage the accuracy characteristics of analog signals, reducing the system performance. Moreover, a coaxial planar coil coupling mechanism is designed, an equivalent mathematical model of the power and communication channels is established, and a method for reducing the crosstalk between the power channel and the communication channel is analyzed. The coupling mechanism has a simple structure.

[0052] The wireless energy and analog-digital hybrid signal synchronous transmission system described in this embodiment consists of two parts: an energy transmission loop and a data transmission loop. The schematic diagram is as Figure 1 shown.

[0053] This system consists of a power channel and a communication channel.

[0054] The power channel consists of a DC power supply, an inverter, a compensation circuit, a power coil, and a rectifier.

[0055] The communication channel consists of a signal modulation section, a signal transceiver circuit, a communication coil, a filter, and a demodulation circuit.

[0056] The power channel circuit can be simplified to Figure 2 , and in this embodiment, the power circuit resonance is achieved by configuring a bilateral LCC circuit. The compensation topology satisfies the following conditions:

[0057]

[0058] Where, ω p = 2πf p , f p is the operating frequency of the system power channel, L p1 , L p2 are the resonant inductors of the system circuit, L pp , L psis the self - inductance of the power coil, C p1 , C p2 , C pp , C ps are the compensation capacitors of the power circuit.

[0059] When analyzing the communication channel alone, the equivalent circuit of the information transmission channel is Figure 3 . To enhance the transmission of the data carrier and block the influence of the power channel on the communication channel, the transceiver circuit of the communication channel adopts a bilateral CLC circuit, and the gain of the communication circuit varying with frequency is Figure 4 . For the convenience of analysis and design, the circuit parameters of the communication channel are preset to be symmetric, so that the forward and reverse transmission characteristics are the same. The specific parameter settings are as follows:

[0060] C s1 = C s2 = C1

[0061] C sp = C ss = C2

[0062] L s1 = L s2 = L1

[0063] The carrier frequency of the forward communication transmission is set to ω s , expressed as

[0064]

[0065] Among them, L s1 , L s2 are the inductances of the communication transceiver circuit, L sp , L ss are the self - inductances of the communication coils, C s1 , C s2 , C sp , C ss are the capacitors in the communication transceiver circuit.

[0066] Considering the interference problem between the power coils and communication coils on the same plane and different planes, the equivalent circuit analysis of the power channel and communication channel is carried out. The mathematical model of the communication - power co - transmission system based on coaxial coils is established as Figure 5 . The interference problem can be manifested in the reflection impedances Z p_sp , Z p_ss , Z s_sp , Z s_ss . The reflection impedance Z p_sp (Z p_ss ) from the communication channel to the power channel is much less than 0 and can be regarded as a short - circuit in circuit analysis. The reflection impedance Z s_sp (Z s_ss) is relatively high. Therefore, when analyzing the power channel, the influence of the communication channel on the power channel can be ignored. However, when analyzing the communication channel, the influence of the power channel on the communication channel is relatively large and cannot be ignored.

[0067] The interference of the power channel on the communication channel can be calculated from the equivalent circuit as follows:

[0068]

[0069] where k is a constant. It can be seen from the simplified result that the interference on the communication part mainly comes from the direct influence of the power primary coil of k 14 to the communication secondary coil and the indirect influence of k 12 , k 24 from the power primary coil of k 13 , k 34 to the power secondary coil and then to the communication secondary coil. The indirect interference of k 12 , k 24 and k 14 can be ignored. To improve the power transmission efficiency, increase k 12 , that is, the coupling coefficient of the power coil. At the same time, to reduce the influence of power transmission on communication transmission, reduce k 24 and k 14 . By increasing the distance difference between the inner and outer rings of the coaxial coils on the same plane, the coupling coefficients k 24 and k 14 are reduced, thereby reducing the interference of the power channel on the communication channel.

[0070] When transmitting analog signals, the carrier frequency is selected at a frequency that is quite different from the carrier frequency of digital signals, and the communication channel has a high gain at this frequency.

[0071] Embodiment 2: This embodiment further limits a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on coaxial coils provided in Embodiment 1. The signal modulation part, the signal transceiver circuit, and the primary communication coil are connected in series in sequence, and the secondary communication coil, the filter, and the demodulation circuit are connected in series in sequence; the signal modulation part includes an analog signal modulation circuit and a digital signal modulation circuit.

[0072] Embodiment 3: This embodiment further limits a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on coaxial coils provided in Embodiment 2. The modulation signals generated by the analog signal modulation circuit and the digital signal modulation circuit are connected in parallel and superimposed to connect to the signal transceiver circuit.

[0073] Embodiment 4: This embodiment further limits a wireless energy and analog-digital hybrid signal synchronous transmission circuit based on coaxial coils provided in Embodiment 3. The demodulation circuit is connected in parallel across the two ends of the secondary communication coil.

[0074] Embodiment 5. This embodiment further limits a wireless energy and analog-digital hybrid signal synchronous transmission circuit provided in Embodiment 1, and the output end of the rectifier is used as the output end of the circuit.

[0075] Embodiment 6. This embodiment provides a synchronous transmission of wireless energy and analog-digital hybrid modulation signals. The method is applied to the circuit provided in Embodiment 1, and the method includes:

[0076] In the communication path, steps of converting binary data into a high-frequency data carrier wave and converting an analog signal into a high-frequency modulated signal;

[0077] Steps of sending the high-frequency modulated signal after modulating and mixing the analog signal and the digital signal to the transmission path and the corresponding data transceiver;

[0078] Steps of restoring the original transmitted digital signal and analog signal according to the high-frequency modulated signal;

[0079] In the power transmission path, steps of converting direct current into high-frequency alternating current;

[0080] Steps of transforming the high-frequency alternating current to a preset voltage and then rectifying it into direct current as the output.

[0081] Specifically, the working principle of the system mentioned in Embodiment 1 is as follows:

[0082] The inverter in the power channel converts direct current into high-frequency alternating current, which is input into the power transmitting coil after passing through the compensation circuit. The coil generates an alternating magnetic field. After the power receiving coil senses the voltage, it is connected to the rectifier bridge through the compensation circuit. The rectifier bridge rectifies the high-frequency alternating current into direct current to supply power to the load.

[0083] The digital signal and the analog signal are respectively modulated by their respective modulation modules to generate two high-frequency signal carriers, which are connected in parallel and superimposed on both ends of the signal transceiver circuit. Subsequently, the high-frequency carrier passes through the signal transceiver network composed of capacitors and inductors and is loaded onto the communication coil through the coil tap. The demodulation module on the other side samples and filters the signal of the signal transceiver circuit, separates the two modulated signals of digital and analog, and then demodulates them respectively to restore the original transmitted digital signal and analog signal.

[0084] The functions of the data transceiver circuit are as follows. On the one hand, it reduces the current flowing into the communication channel at the working frequency of the power channel, thereby reducing the influence of the power channel on the communication channel; on the other hand, it uses two inductors and four capacitors at the transmitting end and the receiving end, and combines with the coupling coil to form a high-order circuit topology, so that the data channel generates communication frequency bands in multiple frequency bands to achieve multi-channel signal transmission.

[0085] Embodiment 7. This embodiment further limits the synchronous transmission of wireless energy and analog-digital hybrid modulation signals provided in Embodiment 6. The high-frequency modulated signal is sent to the signal transmission path and the corresponding data transceiver through the communication coil.

[0086] Embodiment 8. This embodiment further limits the synchronous transmission of wireless energy and analog-digital hybrid modulation signals provided in Embodiment 6. The high-frequency modulated signal passing through the secondary communication coil is filtered and sampled and demodulated to recover the original transmitted digital signal and analog signal.

[0087] Embodiment 9. This embodiment provides a computer storage medium for storing a computer program. When the computer program is read by a computer, the computer executes the method described above.

[0088] Embodiment 10. This embodiment provides a computer, including a processor and a storage medium. When the processor reads the computer program stored in the storage medium, the computer executes the method described above.

[0089] Embodiment 11. Combining Figures 6-10 to illustrate this embodiment, this embodiment provides a specific implementation of the circuit provided in Embodiment 1. Specifically:

[0090] This embodiment provides a set of 400W wire wireless energy and analog-digital hybrid modulation signal synchronous transmission system, which realizes the transmission of 1Mbps bidirectional digital signals and unidirectional 20kHz analog signals. The system circuit schematic diagram is as Figure 1 shown. The system parameters are calculated to be Figure 6 , where f p represents the operating frequency of the power channel, f s1 represents the carrier frequency of the forward digital signal transmission, f s2 represents the carrier frequency of the backward digital signal transmission, f s3 represents the carrier frequency of the analog signal transmission. Figure 7 is a physical photo of the system. Figure 8 is a physical photo of the coaxial coil.

[0091] Figure 9 shows the waveforms of the mixed transmission of the system's analog signal and digital signal, Figure 10 shows the waveforms of the system's energy and analog-digital hybrid transmission. Random sequences are sent simultaneously on the primary and secondary sides of the communication channel and received on the opposite side. It can be seen that the channel realizes full-duplex 1Mbit / s digital communication. The waveform of the analog signal sent by the primary side is received on the secondary side. It can be seen that the channel realizes unidirectional analog communication. The digital communication delay is 4.98us, and the analog signal transmission delay is 2.31us.

[0092] In summary, the wireless energy and analog-digital hybrid modulation signal synchronous transmission system mentioned in Embodiment 1 can meet the expected goals. It can achieve full-duplex digital communication at a rate of 1 Mbps and analog communication at 20 kHz while transmitting power. It has a simple structure, stable and reliable performance, and is expected to be widely applied in the fields of aerospace, navigation, consumer electronics, etc.

[0093] The above further describes the technical solutions provided by the present invention through several specific embodiments to highlight the advantages and beneficial effects of the technical solutions provided by the present invention. However, the above several specific embodiments are not used as limitations on the present invention. Any reasonable modifications and improvements, combinations of embodiments, and equivalent replacements based on the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0094] In the description of this specification, it is only a preferred embodiment of the present invention and cannot be used to limit the scope of rights of the present invention; in addition, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or N embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined. Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more N executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present invention includes additional implementations, where the functions can be executed in a manner that is not in the order shown or discussed, including in a substantially simultaneous manner according to the functions involved or in a reverse order, which should be understood by those skilled in the art of the embodiments of the present invention. The logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing a logical function, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with such instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection part (electronic device) having one or N wirings, a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM).In addition, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation or other suitable processing when necessary, and then stored in a computer memory. It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application specific integrated circuits with suitable combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0095] Those of ordinary skill in the art can understand that all or part of the steps carried out in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments. In addition, in each of the embodiments of the present invention, the functional units can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

Claims

1. A wireless energy and analog digital mixed signal synchronous transmission circuit based on a coaxial coil, characterized in that: The circuit comprises: Power channel and communication channel; The power channel includes: a DC power supply, an inverter, a compensation circuit 1 and a primary power coil, and a secondary power coil, a compensation circuit 2 and a rectifier; The communication channel includes: a signal modulation part, a signal transceiver circuit and a primary communication coil, and a secondary communication coil, a filter and a demodulation circuit; The inner ring of the coaxial coil is a communication coil, and the outer ring of the coaxial coil is a power coil; The two ends of the primary signal transceiver circuit are connected to the two ends of the primary communication coil in sequence, and the two ends of the secondary signal transceiver circuit are connected to the two ends of the secondary communication coil; The compensation circuit 1 of the power channel is connected in parallel to both ends of the primary power coil, and the compensation circuit 2 is connected in parallel to both ends of the secondary power coil.

2. According to claim 1, a wireless energy and analog-digital mixed signal synchronous transmission circuit based on a coaxial coil is characterized in that: The signal modulation part, signal transceiver circuit and primary communication coil are connected in series in sequence, and the secondary communication coil, filter and demodulation circuit are connected in series in sequence; the signal modulation part includes an analog signal modulation circuit and a digital signal modulation circuit.

3. According to claim 2, a wireless energy and analog-digital mixed signal synchronous transmission circuit based on a coaxial coil is characterized in that: The modulation signals generated by the analog signal modulation circuit and the digital signal modulation circuit are superimposed in parallel and used to connect the signal transceiver circuit.

4. According to claim 2, a wireless energy and analog-digital mixed signal synchronous transmission circuit based on a coaxial coil is characterized in that: The demodulation circuit is connected in parallel at both ends of the secondary communication coil.

5. The wireless energy and analog-digital mixed signal synchronous transmission circuit based on a coaxial coil according to claim 1, characterized in that: The output end of the rectifier serves as the output end of the circuit.

6. Synchronous transmission of wireless energy and analog-digital mixed signals based on coaxial coils, characterized in that: The method is applied to the circuit according to claim 1, and the method comprises: In the communication path, the step of converting binary data into a high-frequency data carrier, the step of converting an analog signal into a high-frequency modulated signal; The step of sending the high-frequency modulated signal obtained by modulating the analog signal and the digital signal to a transmission path and a corresponding data transceiver; The step of restoring the original transmitted digital signal and analog signal based on the high frequency modulated signal; The step of converting direct current into high-frequency alternating current in the power transmission path; The high-frequency alternating current is transformed to a preset voltage and then rectified into direct current as an output step.

7. The synchronous transmission of wireless energy and analog-digital mixed signals based on a coaxial coil according to claim 6, characterized in that: The high frequency modulated signal is sent to the signal transmission path and the corresponding data transceiver through the communication coil.

8. The synchronous transmission of wireless energy and analog-digital mixed signals based on a coaxial coil according to claim 6, characterized in that: The high frequency modulated signal passing through the secondary communication coil is filtered and sampled and demodulated to restore the original transmitted digital signal and analog signal.

9. A computer storage medium for storing a computer program, characterized in that: When the computer program is read by a computer, the computer executes the method according to claim 6.

10. A computer, comprising a processor and a storage medium, characterized in that: When the processor reads the computer program stored in the storage medium, the computer executes the method of claim 6 .

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