Underwater wireless electric energy data integrated transmission system with self-compatible function

Abstract

The invention provides an underwater wireless electric energy data integrated transmission system with a self-compatible function, which comprises a transmitting side controller, a transmitting side antenna, a receiving side controller and a receiving side antenna, the transmitting side controller and the transmitting side antenna are connected, the receiving side controller and the receiving side antenna are connected, and the transmitting side antenna is wirelessly connected with the receiving side antenna; the transmitting side controller is connected with the control center to receive electric energy and data signals to be transmitted, and the receiving side controller is connected with the equipment terminal to transmit the electric energy and data signals to the terminal equipment; electromagnetic decoupling is carried out in the transmitting side antenna and the receiving side antenna through the unipolar coil and the bipolar coil to reduce electric energy and data signal interference, and frequency domain decoupling is carried out in the transmitting side controller and the receiving side controller through the frequency division and OFDM technology to reduce electric energy and data signal interference. According to the invention, the reliability and integration of underwater wireless electric energy and data simultaneous transmission are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater wireless power transmission, and in particular to an underwater wireless power data integrated transmission system. Background Art

[0002] The ocean is rich in natural resources and also has important strategic significance. Therefore, the research and development of ocean equipment has accelerated, and it is also developing towards the direction of unmanned operation. Unmanned devices applied to the ocean environment mainly include unmanned underwater vehicles (UUVs), remotely operated vehicles (ROVs), etc. When UUVs and ROVs perform underwater operations such as seabed patrol and mapping, they need to transmit the information collected by sensors back to the data center. Moreover, most underwater devices rely on batteries for power supply. Therefore, data transmission and energy supply for underwater devices are two core problems.

[0003] To solve the problems of data transmission and energy supply for underwater devices, there are currently two main methods. One is to use the power of the underwater device itself to surface and then replace it manually. However, the process of the underwater device surfacing will waste a lot of electricity, resulting in a significant reduction in the working efficiency of the underwater device. The other method is to directly supply electrical energy to the underwater device through a wet pluggable connector at the bottom of the water, and at the same time, obtain the underwater information collected by the sensor through wired communication. Since the wet pluggable connector requires extremely high alignment accuracy and there are large mechanical stresses, this method is extremely inconvenient to operate in a complex underwater environment. Although some patents have proposed using wireless charging to supply electrical energy to underwater devices, the problem of obtaining data from underwater devices still cannot be solved. The invention patent with the publication number CN114448471A proposes a solution for simultaneous transmission of underwater power and data based on adaptive feedforward signal anti-interference, realizing the simultaneous transmission of the underwater energy and signal transmission system. However, the data transmission antenna and the power transmission antenna in this solution cannot be decoupled, and there is still some coupling. When transmitting high-power electrical energy, it will interfere with the data transmission channel. Summary of the Invention

[0004] Aiming at the technical problem of channel interference existing in the simultaneous transmission of underwater electrical energy and data in the prior art, the present invention proposes an underwater wireless power data integrated transmission system with self-compatible function. While being able to simultaneously transmit electrical energy and data, it realizes frequency-domain decoupling through frequency division and OFDM technology, and realizes physical electromagnetic decoupling through single and bipolar coils, improving the reliability and integration of underwater wireless power and data simultaneous transmission.

[0005] In order to achieve the above object, the technical solution of the present invention is realized as follows: An underwater wireless power and data integrated transmission system with self - compatibility function, comprising a transmitting - side controller, a transmitting - side antenna connected thereto, a receiving - side controller, and a receiving - side antenna connected thereto. The transmitting - side antenna is wirelessly connected to the receiving - side antenna; the transmitting - side controller is connected to a control center to receive the power and data signals to be transmitted, and the receiving - side controller is connected to a device terminal to transmit the power and data signals to the terminal device; in the transmitting - side antenna and the receiving - side antenna, electromagnetic decoupling is performed through unipolar coils and bipolar coils to reduce the interference of power and data signals, and in the transmitting - side controller and the receiving - side controller, frequency - domain decoupling is performed through frequency - division and OFDM technologies to reduce the interference of power and data signals.

[0006] Specifically, the transmitting - side controller includes a transmitting - side controller housing, a power - transmitting control module, and a data - transmitting control module; both the power - transmitting control module and the data - transmitting control module are arranged in the transmitting - side controller housing; both the power - transmitting control module and the data - transmitting control module are connected to the transmitting - side antenna through watertight lines; The transmitting - side antenna includes a transmitting - side antenna housing, a power - transmitting module, and a data - transmitting module; both the power - transmitting module and the data - transmitting module are arranged in the transmitting - side antenna housing. The power - transmitting module is connected to the power - transmitting control module through a watertight line, and the data - transmitting module is connected to the data - transmitting control module through a watertight line; both the power - transmitting module and the data - transmitting module are wirelessly connected to the receiving - side antenna.

[0007] Specifically, the receiving - side antenna includes a receiving - side antenna housing, a power - receiving module, and a data - receiving module; both the power - receiving module and the data - receiving module are arranged in the receiving - side antenna housing. The power - receiving module is wirelessly connected to the power - transmitting module, and the data - receiving module is wirelessly connected to the data - transmitting module; both the power - receiving module and the data - receiving module are connected to the receiving - side controller through watertight lines; The receiving - side controller includes a receiving - side controller housing, a power - receiving control module, and a data - receiving control module; both the power - receiving control module and the data - receiving control module are arranged in the receiving - side controller housing; the power - receiving control module is connected to the power - receiving module through a watertight line, and the data - receiving control module is connected to the data - receiving module through a watertight line.

[0008] Specifically, the power - transmitting control module, the power - transmitting module, the power - receiving module, and the power - receiving control module jointly form a power - transmission circuit; The data - transmitting control module, the data - transmitting module, the data - receiving module, and the data - receiving control module jointly form a data - transmission circuit.

[0009] Specifically, the electric energy transmission control module includes a transmitting - side power converter and a transmitting - side compensation network connected in sequence; the transmitting - side power converter is connected to the DC power supply of the control center, converts the DC electric energy signal into an AC electric energy signal distinguishable from the data signal frequency to achieve the frequency - division transmission of the electric energy signal and the data signal, and the transmitting - side compensation network is connected to the electric energy transmitting module through a watertight line; The electric energy reception control module includes a receiving - side compensation network and a receiving - side power converter connected in sequence; the receiving - side compensation network is connected to the electric energy receiving module through a watertight line; the receiving - side power converter is connected to the equipment terminal.

[0010] Specifically, the transmitting - side antenna housing includes a first upper housing and a first lower housing; the electric energy transmitting module includes a transmitting - side electric energy coil and a transmitting - side electric energy magnetic core, and the transmitting - side electric energy coil is connected to the transmitting - side compensation network; the data transmitting module includes a transmitting - side data coil and a transmitting - side data magnetic core, and the transmitting - side data coil is connected to the data transmitting control module; the transmitting - side electric energy coil and the transmitting - side data coil are arranged in a spaced - apart and tiled manner on the first lower housing; the transmitting - side electric energy magnetic core is tiled on the transmitting - side electric energy coil, and the transmitting - side data magnetic core is tiled on the transmitting - side data coil; grooves are provided on the inner - end - face edges of both the first upper housing and the first lower housing, and O - type coils are respectively arranged in the grooves, and the first upper housing and the first lower housing seal the transmitting - side antenna through the O - type coils; The receiving - side antenna housing includes a second upper housing and a second lower housing; the electric energy receiving module includes a receiving - side electric energy coil and a receiving - side electric energy magnetic core, the receiving - side electric energy coil is coupled to the transmitting - side electric energy coil, the receiving - side electric energy coil is coupled to the transmitting - side electric energy coil, and the receiving - side electric energy coil is connected to the receiving - side compensation network; the data receiving module includes a receiving - side data coil and a receiving - side data magnetic core, the receiving - side data coil is coupled to the transmitting - side data coil, and the receiving - side data coil is connected to the data receiving control module; the receiving - side electric energy coil and the receiving - side data coil are arranged in a spaced - apart and tiled manner on the second lower housing, the receiving - side electric energy magnetic core is tiled on the receiving - side electric energy coil, and the receiving - side data magnetic core is tiled on the receiving - side data coil; grooves are provided on the inner - end - face edges of both the second upper housing and the second lower housing, and O - type coils are respectively arranged in the grooves, and the second upper housing and the second lower housing seal the transmitting - side antenna through the O - type coils.

[0011] Specifically, the data transmitting control module is a transmitting - side signal conditioning circuit. The transmitting - side signal conditioning circuit uses an OFDM modulation module to perform high - frequency modulation distinguishable from the electric energy signal frequency to achieve the frequency - division transmission of the electric energy signal and the data signal, couples the modulation signal to the transmitting - side data coil through a Cdp capacitor, and performs tuning with the transmitting - side data coil and filters out signal interference; The data reception control module is a reception-side signal conditioning circuit; the reception-side signal conditioning circuit couples the data signal received from the reception-side data coil to the OFDM demodulation module through a Cds capacitor, tunes with the reception-side data coil, and filters out signal interference.

[0012] Specifically, the transmitting-side power converter is a full-bridge inverter circuit, the receiving-side power converter is a full-bridge rectifier circuit, and the transmitting-side compensation network is an LCC-type compensation network.

[0013] Specifically, in the same transmitting-side antenna or the same receiving-side antenna, one of the power coil and the data coil is a unipolar coil, and the other is a bipolar coil.

[0014] Specifically, the OFDM modulation module decomposes the original data signal into multiple low-speed sub-signals, and modulates them onto multiple mutually orthogonal sub-carriers for transmission respectively to achieve interference suppression and improve spectrum efficiency.

[0015] The beneficial effects of the present invention are as follows: Compared with the traditional methods of replacing the battery of underwater equipment, using wet-pluggable wired connection, or having only single wireless charging function, the present invention integrates two functions of underwater wireless power transmission and radio data transmission. These two functions do not interfere with each other and are self-compatible, and have good tolerance to offset underwater, which is convenient for underwater docking and separation.

[0016] The integrated unipolar coil and bipolar coil mechanism proposed by the present invention can effectively solve the interference problem between the power coil and the data coil in the same enclosed housing, realizing the decoupling of power and data from the physical structure, and improving the reliability and integration of underwater wireless power and data simultaneous transmission.

[0017] While achieving decoupling through the structure, the power line communication control strategy of frequency division plus OFDM proposed by the present invention also avoids the crosstalk between power and data algorithmically, operates power and data in different frequency bands, and improves the utilization rate of the frequency band within the limited carrier frequency band through OFDM technology to increase the communication rate and achieve high-speed underwater data integrated transmission. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall system structure diagram of the present invention.

[0020] Figure 2 This is the working circuit diagram of the overall system of the present invention.

[0021] Figure 3 This is the schematic diagram of the structure of the transmitting antenna or receiving antenna of the present invention.

[0022] Figure 4 This is the coupling circuit diagram of the transmission coil of the present invention.

[0023] Figure 5 This is the schematic diagram of the magnetic coupling magnetic field distribution in Embodiment 2 of the present invention.

[0024] Figure 6 This is the schematic diagram of the magnetic coupling magnetic field distribution in Embodiment 3 of the present invention. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1 An underwater wireless power and data integrated transmission system with self-compatible function, as Figure 1 shown, includes a connected transmitting-side controller, a transmitting-side antenna, a connected receiving-side controller, and a receiving-side antenna. The transmitting-side antenna is wirelessly connected to the receiving-side antenna. The transmitting-side antenna and the receiving-side antenna are respectively used for wireless transmission and reception of power signals and data signals. The transmitting-side controller is connected to the control center to receive the power and data signals to be transmitted. The transmitting-side controller is used for transformation compensation of the transmitted power signal and conditioning of the data signal; the receiving-side controller is connected to the device terminal to transmit the power and data signals to the device terminal. The transmitting-side controller is used for compensation change of the received power signal and conditioning of the data signal; electromagnetic decoupling is performed through single and bipolar coils in the transmitting-side antenna and the receiving-side antenna to reduce interference of power and data signals, and frequency-domain decoupling is performed through frequency division and OFDM in the transmitting-side controller and the receiving-side controller to reduce interference of power and data signals.

[0027] Specifically, as Figure 1As shown, the transmitting - side controller includes a transmitting - side controller housing 9, an electric - energy transmitting control module, and a data - transmitting control module. The electric - energy transmitting control module is used to convert the electric energy of a DC power supply into high - frequency alternating current, providing a suitable AC form for subsequent electric - energy transmission (such as through components like coupling coils), and performing power compensation, adjusting impedance matching and tuning to reduce system losses. The data - transmitting control module is used to perform OFDM modulation on data signals to achieve frequency division from electric - energy signals, enabling the data signals to operate at a frequency different from that of the electric energy, avoiding interference between the two, and ensuring the accuracy and stability of data transmission. Through frequency - division, the frequency - domain decoupling of data signals and electric - energy signals is achieved.

[0028] Both the electric - energy transmitting control module and the data - transmitting control module are arranged inside the transmitting - side controller housing 9. Both the electric - energy transmitting control module and the data - transmitting control module are connected to the transmitting - side antenna through watertight lines. The integration of the electric - energy transmitting control module and the data - transmitting control module into the transmitting - side controller simplifies the hardware structure, reduces complexity, and optimizes resource utilization.

[0029] Specifically, as Figure 1 As shown, the transmitting - side antenna includes a transmitting - side antenna housing 19, an electric - energy transmitting module, and a data - transmitting module. The electric - energy transmitting module is used to achieve wireless transmission of electric - energy signals, and the data - transmitting module is used to achieve wireless transmission of data signals. The electromagnetic decoupling between the electric - energy transmitting module and the data - transmitting module is realized through the physical structure of single - and double - polarity coils, reducing the interference between electric energy and data signals.

[0030] Both the electric - energy transmitting module and the data - transmitting module are arranged inside the transmitting - side antenna housing 19. The electric - energy transmitting module is connected to the electric - energy transmitting control module through a watertight line, and the data - transmitting module is connected to the data - transmitting control module through a watertight line. Both the electric - energy transmitting module and the data - transmitting module are wirelessly connected to the receiving - side antenna.

[0031] Specifically, as Figure 1 As shown, the receiving - side antenna includes a receiving - side antenna housing 20, an electric - energy receiving module, and a data - receiving module. The electric - energy receiving module is used to achieve wireless transmission of electric - energy signals, and the data - receiving module is used to achieve wireless transmission of data signals. Similarly, the electromagnetic decoupling is realized through the physical structure of single - and double - polarity coils, reducing the interference between electric energy and data signals.

[0032] Both the electric - energy receiving module and the data - receiving module are arranged inside the receiving - side antenna housing 20. The electric - energy receiving module is wirelessly connected to the electric - energy transmitting module, and the data - receiving module is wirelessly connected to the data - transmitting module. Both the electric - energy receiving module and the data - receiving module are connected to the receiving - side controller through watertight lines.

[0033] Specifically, as Figure 1As shown, the receiving - side controller includes a receiving - side controller housing 10, a power - receiving control module, and a data - receiving control module. The power - receiving control module is used to perform resonance compensation and load impedance matching on the received power signal, and convert high - frequency alternating current into direct current to provide a stable DC power supply for subsequent loads. The data - receiving control module is used to perform OFDM demodulation on the data signal and transmit the demodulated data signal to the terminal device.

[0034] Both the power - receiving control module and the data - receiving control module are arranged inside the receiving - side controller housing 10. The power - receiving control module is connected to the power - receiving module through a watertight line, and the data - receiving control module is connected to the data - receiving module through a watertight line.

[0035] Specifically, the power - transmitting control module, the power - transmitting module, the power - receiving module, and the power - receiving control module together form a power - transmission circuit. Specifically, the data - transmitting control module, the data - transmitting module, the data - receiving module, and the data - receiving control module together form a data - transmission circuit.

[0036] Preferably, as Figure 2 shown, the data - transmitting control module is a transmitting - side signal conditioning circuit 1. The transmitting - side signal conditioning circuit 1 uses an OFDM modulation module to perform high - frequency modulation that is distinguishable from the frequency of the power signal to achieve frequency - division transmission of the power signal and the data signal. The modulation signal is coupled to the transmitting - side data coil 21 through a Cdp capacitor, and is tuned with the transmitting - side data coil 21 and signal interference is filtered out. Preferably, as Figure 2 shown, the data - receiving control module is a receiving - side signal conditioning circuit 4. The receiving - side signal conditioning circuit 4 couples the data signal received from the receiving - side data coil 25 to the OFDM demodulation module through a Cds capacitor, and is tuned with the receiving - side data coil 25 and signal interference is filtered out.

[0037] The conductive characteristics of seawater make it impossible to use a relatively high frequency band for underwater wireless data transmission. Otherwise, the signal attenuation will be extremely fast. Therefore, only a relatively low MHz frequency band can be selected for transmission. The OFDM modulation module decomposes the original data signal into multiple low-speed sub-signals, which are respectively modulated onto multiple mutually orthogonal sub-carriers for transmission. The frequencies of these sub-carriers are allowed to partially overlap, and the orthogonality ensures that the signals do not overlap during demodulation, improving the spectral efficiency of data transmission. In the data transmission circuit, the OFDM modulator processes the input data signal to form a specific orthogonal sub-carrier distribution in the frequency domain. This modulation method essentially standardizes the frequency domain structure of the data signal. Even if there is a weak energy leakage of the electrical energy signal into the data frequency band, the orthogonality of OFDM can ensure that the interference between data sub-carriers is effectively suppressed. On the basis of using frequency division technology, other stray signals except the data signal are further filtered out.

[0038] Regarding the watertight line, as Figure 1 shown, taking the transmitting side as an example, the first watertight cable 11 and the third watertight cable 13 are respectively connected to the transmitting side compensation network 3 in the electrical energy transmitting control module and the transmitting side electrical energy coil 14 in the electrical energy transmitting module for transmitting electrical energy. One end of the second watertight cable 12 is connected to the Cdp capacitor and the OFDM modulator in the data transmitting control module, and the other end of the watertight cable 12 is connected to the transmitting side data coil 21 in the data transmitting module for transmitting data signals.

[0039] Embodiment 2 An underwater wireless electrical energy and data integrated transmission system with self-compatible function, as Figure 1 shown, includes a connected transmitting side controller, a transmitting side antenna, and a connected receiving side controller, a receiving side antenna. The transmitting side antenna is wirelessly connected to the receiving side antenna. The transmitting side antenna and the receiving side antenna are respectively used for wireless transmission and reception of electrical energy signals and data signals. The transmitting side controller is connected to the control center to receive the electrical energy and data signals to be transmitted. The transmitting side controller is used for transformation compensation of the transmitted electrical energy signal and conditioning of the data signal; the receiving side controller is connected to the device terminal (connector 8) to transmit the electrical energy and data signals to the device terminal. The receiving side controller is used for compensation change of the received electrical energy signal and conditioning of the data signal; in the transmitting side antenna and the receiving side antenna, electromagnetic decoupling is performed through single and bipolar coils to reduce the interference between electrical energy and data signals. In the transmitting side controller and the receiving side controller, frequency domain decoupling is performed through frequency division and OFDM to reduce the interference between electrical energy and data signals.

[0040] Preferably, as Figure 3As shown, the transmitting - side antenna housing 19 includes a first upper housing and a first lower housing; the electric - energy transmitting module includes a transmitting - side electric - energy coil 14 and a transmitting - side electric - energy magnetic core 23, and the transmitting - side electric - energy coil 14 is connected to the transmitting - side compensation network 3; the data - transmitting module includes a transmitting - side data coil 21 and a transmitting - side data magnetic core 22, and the transmitting - side data coil 21 is connected to the data - transmitting control module; the transmitting - side electric - energy coil 14 and the transmitting - side data coil 21 are arranged in a spaced - apart and tiled manner on the first lower housing; the transmitting - side electric - energy magnetic core 23 is tiled on the transmitting - side electric - energy coil 14, and the transmitting - side data magnetic core 22 is tiled on the transmitting - side data coil 21; grooves are provided on the inner - end - face edges of both the first upper housing and the first lower housing, and O - shaped coils are respectively provided in the grooves, and the first upper housing and the first lower housing seal the transmitting - side antenna through the O - shaped coils.

[0041] Preferably, as Figure 3 shown, the receiving - side antenna housing 20 includes a second upper housing and a second lower housing; the electric - energy receiving module includes a receiving - side electric - energy coil 15 and a receiving - side electric - energy magnetic core 24, and the receiving - side electric - energy coil 15 is coupled to the transmitting - side electric - energy coil 14, and the coupling connection method is as Figure 5 shown, the receiving - side electric - energy coil 15 is connected to the receiving - side compensation network 5; the data - receiving module includes a receiving - side data coil 25 and a receiving - side data magnetic core 26, and the receiving - side data coil 25 is coupled to the transmitting - side data coil 21, and the coupling connection method is as Figure 5 shown, the receiving - side data coil 25 is connected to the data - receiving control module; the receiving - side electric - energy coil 15 and the receiving - side data coil 25 are arranged in a spaced - apart and tiled manner on the second lower housing, the receiving - side electric - energy magnetic core 24 is tiled on the receiving - side electric - energy coil 15, and the receiving - side data magnetic core 26 is tiled on the receiving - side data coil 25. Grooves are provided on the inner - end - face edges of both the second upper housing and the second lower housing, and O - shaped coils are respectively provided in the grooves, and the second upper housing and the second lower housing seal the transmitting - side antenna through the O - shaped coils. The transmitting - side electric - energy coil 14 and the receiving - side electric - energy coil 15 are in contact through the first upper housing and the second upper housing for coupling connection.

[0042] In use, the power converter 2 on the transmitting side of the wireless power channel is connected to a DC power supply. The power converter on the transmitting side converts direct current into high-frequency alternating current and then connects it to the compensation network 3 on the transmitting side. After compensation by the said compensation network on the transmitting side, the electrical energy signal is sent to the transmitting-side electrical energy coil 14. Through the contact between the first upper housing and the second upper housing, the transmitting-side electrical energy coil 14 is coupled to the receiving-side electrical energy coil 15. The transmitting-side electrical energy coil 14 converts electrical energy into electromagnetic waves for wireless transmission in a marine environment. The receiving-side electrical energy coil 15 converts the high-frequency electromagnetic waves generated on the transmitting side into high-frequency alternating current and then transmits it to the receiving-side compensation network 5 for compensation. The receiving-side power converter 6 converts the high-frequency alternating current into direct current and then connects it to the load for output. Another path of the radio data channel: The signal conditioning circuit 1 on the transmitting side is connected to the signal input source in a wired manner. The transmitting signal conditioning circuit 1 completes OFDM modulation and impedance matching on the original signal and then connects it to the transmitting-side data coil 21. The transmitting-side data coil 21 converts the data signal into electromagnetic waves for wireless transmission in a marine environment. The receiving-side data coil 25 converts the high-frequency electromagnetic waves generated on the transmitting side into high-frequency alternating current and then connects it to the receiving-side signal conditioning circuit 4. The receiving-side signal conditioning circuit 4 demodulates the signal by OFDM and then sends it to the terminal device on the receiving side.

[0043] It should be noted that there are two methods proposed in the present invention to solve the crosstalk between electrical energy and data. First, the power converter 2 on the transmitting side and the signal conditioning circuit 1 on the transmitting side are used to make the electrical energy and data work at different frequencies. However, due to the large power of the electrical energy, even if they work at different frequencies, the harmonics of the electrical energy will still interfere with the data. Figure 4 Characterizes Figure 3 the coupling relationship between the electrical energy coil and the data coil. L1 and L2 are the self-inductances of the electrical energy coil, L3 and L4 are the self-inductances of the data coil, k12 is the mutual inductance of the electrical energy coil, k34 is the mutual inductance of the data coil, and k12 and k34 are the mutual inductances actually required in the process of transmitting electrical energy and data. In addition, there are also stray mutual inductances in the integrated coil, such as k13, k14, k23, and k24. These stray mutual inductances will cause crosstalk between electrical energy and data. Therefore, the second solution is to use Figure 3Decouple the single - and bipolar coil structures shown. Among them, the transmitting - side power coil 14 and the receiving - side power coil 15 adopt bipolar coupling coils, and the transmitting - side power coil 14 and the receiving - side power coil 15 are coupled. The transmitting - side data coil 21 and the receiving - side data coil 25 adopt single - polar coupling coils, and the transmitting - side data coil 21 and the receiving - side data coil 25 are coupled. The power coil generates a unipolar magnetic field, and the data coil generates a bipolar magnetic field. Different magnetic - field directions make the magnetic - field actions relatively independent during the power and data transmission processes, reducing the interference between them. Stray mutual inductance causes crosstalk because the magnetic - field interaction between coils is complex and chaotic. In this structure, different - polarity magnetic fields can reduce this complex interaction, suppress the influence of stray mutual inductance, and then reduce crosstalk to achieve decoupling. The magnetic - field directions generated after applying excitation are as Figure 5 shown. It can be seen that the magnetic - field direction generated by the power coil is unipolar, and the magnetic - field direction generated by the data coil is bipolar. Decoupling between the coils is achieved through different magnetic - field directions.

[0044] Specifically, the power - transmitting control module, the power - transmitting module, the power - receiving module, and the power - receiving control module together constitute a power - transmission circuit; Preferably, as Figure 1 shown, the power - transmitting control module includes a transmitting - side power converter 2 and a transmitting - side compensation network 3 connected in sequence. The transmitting - side power converter 2 is connected to the power supply of the control center (through a connector 7), converts the DC power signal into an AC power signal distinguishable from the data - signal frequency to achieve frequency - division transmission of the power signal and the data signal. The transmitting - side compensation network 3 is connected to the power - transmitting module through a watertight line, used to compensate for the resonant characteristics of the components, reduce the reactive - power flow in the circuit, and improve the power factor; optimize the impedance of the transmitting - side circuit, ensure matching with the power - coupling coil and the subsequent transmission channel, reduce energy reflection loss, form resonance at a specific frequency, reduce system loss, improve the efficiency and power capacity of wireless power transmission, and ensure that energy is stably and efficiently transmitted to the receiving side through the power - coupling coil. In this embodiment, the transmitting - side power converter 2 is a full - bridge inverter circuit, and the transmitting - side compensation network 33 is an LCC - type compensation network.

[0045] Preferably, as Figure 1As shown in the figure, the power receiving control module includes a receiving-side compensation network 5 and a receiving-side power converter 6 connected in sequence; the receiving-side compensation network 5 is connected to the power receiving module through a watertight line, and is used for performing resonance compensation on the received power signal, improving efficiency, adjusting the impedance characteristics of the receiving-side circuit, making it match the load, reducing energy reflection loss, ensuring that more energy is transmitted to the load, and enhancing the system power transmission capacity and stability; the receiving-side power converter 6 is connected to the device terminal, and the receiving-side power converter 6 is used to convert high-frequency alternating current into direct current to provide a stable DC power supply for the subsequent load. In this embodiment, the receiving-side power converter 6 is a full-bridge rectifier circuit. The receiving-side compensation network 5 uses a single capacitor Cs.

[0046] Other structures are the same as those in Embodiment 1.

[0047] Embodiment 3 An underwater wireless power and data integrated transmission system with self-compatible function, as Figure 1 shown, includes a connected transmitting-side controller, a transmitting-side antenna, and a connected receiving-side controller and receiving-side antenna. The transmitting-side antenna is wirelessly connected to the receiving-side antenna. The transmitting-side antenna and the receiving-side antenna are respectively used for wireless transmission and reception of power signals and data signals. The transmitting-side controller is connected to the control center to receive the power and data signals to be transmitted, and the transmitting-side controller is used for transformation compensation of the transmitted power signal and conditioning of the data signal; the receiving-side controller is connected to the device terminal to transmit the power and data signals to the device terminal, and the transmitting-side controller is used for compensation change of the received power signal and conditioning of the data signal; in the transmitting-side antenna and the receiving-side antenna, electromagnetic decoupling is performed through single- and bipolar coils to reduce interference between power and data signals, and in the transmitting-side controller and the receiving-side controller, frequency-domain decoupling is performed through frequency division and OFDM to reduce interference between power and data signals.

[0048] Preferably, as Figure 3 shown, the housing 19 of the transmitting-side antenna includes a first upper housing and a first lower housing; the power transmitting module includes a transmitting-side power coil 14 and a transmitting-side power magnetic core 23, and the transmitting-side power coil 14 is connected to the transmitting-side compensation network 3; the data transmitting module includes a transmitting-side data coil 21 and a transmitting-side data magnetic core 22, and the transmitting-side data coil 21 is connected to the data transmitting control module; the transmitting-side power coil 14 and the transmitting-side data coil 21 are arranged side by side and flat on the first lower housing; the transmitting-side power magnetic core 23 is laid flat on the transmitting-side power coil 14, and the transmitting-side data magnetic core 22 is laid flat on the transmitting-side data coil 21; grooves are provided on the inner end face edges of the first upper housing and the first lower housing, and O-shaped coils are respectively provided in the grooves. The first upper housing and the first lower housing seal the transmitting-side antenna through the O-shaped coils.

[0049] Preferably, as Figure 3 shown, the receiving-side antenna housing 20 includes a second upper housing and a second lower housing; the power receiving module includes a receiving-side power coil 15 and a receiving-side power magnetic core 24, and the receiving-side power coil 15 is connected to the receiving-side compensation network 5; the data receiving module includes a receiving-side data coil 25 and a receiving-side data magnetic core 26, and the receiving-side data coil 25 is connected to the data receiving control module; the receiving-side power coil 15 and the receiving-side data coil 25 are arranged in a spaced and tiled manner on the second lower housing, the receiving-side power magnetic core 24 is tiled on the receiving-side power coil 15, the receiving-side data magnetic core 26 is tiled on the receiving-side data coil 25, grooves are provided on the inner end face edges of the second upper housing and the second lower housing, O-shaped coils are respectively provided in the grooves, and the second upper housing and the second lower housing seal the transmitting-side antenna through the O-shaped coils, and the transmitting-side power coil 14 and the receiving-side power coil 15 are in contact through the first upper housing and the second upper housing for coupled connection.

[0050] As Figure 6 shown, the transmitting-side power coil 14 and the receiving-side power coil 15 adopt unipolar coupled coils, the transmitting-side power coil 14 and the receiving-side power coil 15 are coupled, the transmitting-side data coil 21 and the receiving-side data coil 25 adopt bipolar coupled coils, and the transmitting-side data coil 21 and the receiving-side data coil 25 are coupled.

[0051] Other structures are the same as those in Embodiment 1.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underwater wireless power and data integrated transmission system with self-compatible function, characterized in that, It includes a connected transmitting - side controller, a transmitting - side antenna, a connected receiving - side controller, and a receiving - side antenna. The transmitting - side antenna is wirelessly connected to the receiving - side antenna; the transmitting - side controller is connected to a control center to receive electrical energy and data signals to be transmitted, and the receiving - side controller is connected to a device terminal to transmit the electrical energy and data signals to the terminal device; in the transmitting - side antenna and the receiving - side antenna, electromagnetic decoupling is carried out through unipolar coils and bipolar coils to reduce interference of electrical energy and data signals, and in the transmitting - side controller and the receiving - side controller, frequency - domain decoupling is carried out through frequency division and OFDM technology to reduce interference of electrical energy and data signals.

2. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 1, characterized in that, The said transmitting - side controller includes a transmitting - side controller housing (9), an electrical - energy transmitting control module, and a data - transmitting control module; both the electrical - energy transmitting control module and the data - transmitting control module are arranged inside the transmitting - side controller housing (9); both the electrical - energy transmitting control module and the data - transmitting control module are connected to the said transmitting - side antenna through watertight lines; The said transmitting - side antenna includes a transmitting - side antenna housing (19), an electrical - energy transmitting module, and a data - transmitting module; both the electrical - energy transmitting module and the data - transmitting module are arranged inside the transmitting - side antenna housing (19). The electrical - energy transmitting module is connected to the said electrical - energy transmitting control module through a watertight line, and the data - transmitting module is connected to the said data - transmitting control module through a watertight line; both the electrical - energy transmitting module and the data - transmitting module are wirelessly connected to the said receiving - side antenna.

3. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 2, characterized in that The said receiving - side antenna includes a receiving - side antenna housing (20), an electrical - energy receiving module, and a data - receiving module; both the electrical - energy receiving module and the data - receiving module are arranged inside the receiving - side antenna housing (20). The electrical - energy receiving module is wirelessly connected to the said electrical - energy transmitting module, and the data - receiving module is wirelessly connected to the said data - transmitting module; both the electrical - energy receiving module and the data - receiving module are connected to the said receiving - side controller through watertight lines; The said receiving - side controller includes a receiving - side controller housing (10), an electrical - energy receiving control module, and a data - receiving control module; both the electrical - energy receiving control module and the data - receiving control module are arranged inside the receiving - side controller housing (10); the electrical - energy receiving control module is connected to the electrical - energy receiving module through a watertight line, and the data - receiving control module is connected to the data - receiving module through a watertight line.

4. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 3, characterized in that, The said electrical - energy transmitting control module, electrical - energy transmitting module, electrical - energy receiving module, and electrical - energy receiving control module together form an electrical - energy transmission circuit; The said data - transmitting control module, data - transmitting module, data - receiving module, and data - receiving control module together form a data - transmission circuit.

5. The underwater wireless power and data integrated transmission system with self - compatibility function according to any one of claims 2 to 4, characterized in that, The said electrical - energy transmitting control module includes a transmitting - side power converter (2) and a transmitting - side compensation network (3) connected in sequence; the transmitting - side power converter (2) is connected to the DC power supply of the control center, converts the DC electrical - energy signal into an AC electrical - energy signal distinguishable from the frequency of the data signal to achieve frequency - division transmission of the electrical - energy signal and the data signal, and the transmitting - side compensation network (3) is connected to the said electrical - energy transmitting module through a watertight line; The described power receiving control module includes a receiving-side compensation network (5) and a receiving-side power converter (6) connected in sequence; the receiving-side compensation network (5) is connected to the power receiving module through a watertight line; the receiving-side power converter (6) is connected to the device terminal.

6. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 5, characterized in that The described transmitting-side antenna housing (19) includes a first upper housing and a first lower housing; the power transmitting module includes a transmitting-side power coil (14) and a transmitting-side power magnetic core (22), and the transmitting-side power coil (14) is connected to the transmitting-side compensation network (3); the data transmitting module includes a transmitting-side data coil (21) and a transmitting-side data magnetic core (22), and the transmitting-side data coil (21) is connected to the data transmitting control module; the transmitting-side power coil (14) and the transmitting-side data coil (21) are arranged side by side and tiled on the first lower housing; the transmitting-side power magnetic core (23) is tiled on the transmitting-side power coil (14), and the transmitting-side data magnetic core (22) is tiled on the transmitting-side data coil (21); grooves are provided on the inner end face edges of the first upper housing and the first lower housing, and O-shaped coils are respectively provided in the grooves, and the first upper housing and the first lower housing seal the transmitting-side antenna through the O-shaped coils; The described receiving-side antenna housing (20) includes a second upper housing and a second lower housing; the power receiving module includes a receiving-side power coil (15) and a receiving-side power magnetic core (24), and the receiving-side power coil (15) is coupled to the transmitting-side power coil (14), and the receiving-side power coil (15) is coupled to the transmitting-side power coil (14), and the receiving-side power coil (15) is connected to the receiving-side compensation network (5); the data receiving module includes a receiving-side data coil (25) and a receiving-side data magnetic core (26), and the receiving-side data coil (25) is coupled to the transmitting-side data coil (21), and the receiving-side data coil (25) is connected to the data receiving control module; the receiving-side power coil (15) and the receiving-side data coil (25) are arranged side by side and tiled on the second lower housing, the receiving-side power magnetic core (24) is tiled on the receiving-side power coil (15), and the receiving-side data magnetic core (26) is tiled on the receiving-side data coil (25); grooves are provided on the inner end face edges of the second upper housing and the second lower housing, and O-shaped coils are respectively provided in the grooves, and the second upper housing and the second lower housing seal the transmitting-side antenna through the O-shaped coils.

7. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 6, characterized in that, The described data transmitting control module is a transmitting-side signal conditioning circuit (1), and the transmitting-side signal conditioning circuit (1) uses an OFDM modulation module to perform high-frequency modulation that differentiates from the power signal frequency to achieve frequency-division transmission of the power signal and the data signal, and couples the modulation signal to the transmitting-side data coil (21) through a Cdp capacitor, and performs resonance matching with the transmitting-side data coil (21) and filters out signal interference; The data receiving control module is a receiving-side signal conditioning circuit (4); the receiving-side signal conditioning circuit (4) couples the data signal received from the receiving-side data coil (25) to the OFDM demodulation module through a Cds capacitor, tunes with the receiving-side data coil (25), and filters out signal interference.

8. The underwater wireless power and data integrated transmission system with self-compatible function according to claim 6 or 7, characterized in that The transmitting-side power converter (22) is a full-bridge inverter circuit, the receiving-side power converter (6) is a full-bridge rectifier circuit, and the transmitting-side compensation network (3) is an LCC-type compensation network.

9. The underwater wireless power and data integrated transmission system with self - compatibility function according to claim 6 or 7, characterized in that, In the same transmitting-side antenna or the same receiving-side antenna, one of the power coil and the data coil is a unipolar coil, and the other is a bipolar coil.

10. The underwater wireless power and data integrated transmission system with self - compatibility function according to claim 7, characterized in that, The OFDM modulation module decomposes the original data signal into multiple low-speed sub-signals, modulates them onto multiple mutually orthogonal sub-carriers for transmission respectively, so as to achieve interference suppression and improve spectrum efficiency.

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