Deepwater drilling closed annulus internal temperature and pressure wireless transmission device and method

Abstract

The invention provides a wireless transmission device and method for temperature and pressure in a deepwater drilling closed annulus. The wireless transmission device mainly comprises an electric energy wireless transmitting module, an electric energy wireless relay module, an electric energy wireless receiving module and a signal wireless transmission module. The electric energy wireless transmitting module is used for realizing non-contact electric energy transmission between the shaft and the annulus B; the electric energy wireless relay module is used for providing long-term power supply for the B annulus temperature and pressure gauge and realizing non-contact electric energy transmission between the B annulus and the C annulus; the electric energy wireless receiving module is used for providing long-term power supply for the C annulus temperature and pressure gauge; the signal wireless transmission module and the electric energy wireless transmission module share the same coil, after the battery is charged, the electric energy transmission part is closed, signal transmission is started, and signal half-duplex transmission is achieved. The electric energy and signal wireless transmission principle is based on the electromagnetic coupling principle, and has the advantages of being high in transmission efficiency, large in transmission power, stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas field development drilling, and particularly to a downhole wireless power signal transmission device and method based on electromagnetic coupling. Background Art

[0002] In the development of oil and gas fields, the regular monitoring of downhole temperature, pressure, flow rate and other information can provide the characteristics of well conditions during the oil well development process. However, the underwater wellhead annulus of deep-water gas wells is airtight and the environment is harsh, making it impossible to monitor and read data on site. Moreover, there is an annulus block between each layer of casing, making signal transmission even more difficult. Therefore, conservative casing designs are usually carried out according to the worst predicted values theoretically existing, resulting in over-designed casings and high costs. At present, there is a blank in the monitoring of casing annulus temperature and pressure data, and it is impossible to cope with the impact of casing failures on the safe production of oil and gas. Once an accident occurs, it is difficult to remedy in time. The traditional wired power supply method cannot be applied to the transmission of electric energy and signals in the drilling situation. Therefore, realizing wireless transmission of electric energy and signals in the closed annulus of deep-water drilling is crucial for ensuring the development of oil and gas fields.

[0003] CN 115664053A discloses a downhole electric energy and signal wireless transmission method and device based on electromagnetic coupling. The device includes a wireless power transmission inner cylinder, a wireless power transmission outer cylinder, an inner cylinder primary coil, an outer cylinder secondary coil, etc.

[0004] The advantage of this device / method is to achieve non-contact transmission of electric energy through electromagnetic coupling, realizing wireless communication from the ground control center to underground supporting equipment and from underground supporting equipment to the ground control center. However, this device does not consider the wireless transmission of electric energy and signals under the shielding of metal casings and cannot perform electric energy and signal transmission with temperature and pressure sensors in the closed annulus.

[0005] CN 113937904A discloses a multi-channel wireless power transmission coupling mechanism based on downhole rotary steering. The device includes an inner cylinder magnetic core, a primary energy transmitting coil 1, a primary energy transmitting coil 2, an outer cylinder magnetic core, a secondary energy receiving coil 1, a secondary energy receiving coil 2, etc. The advantage of this device is to adopt two sets of energy transmission channels, which can output two voltages to supply power to different downhole instruments. However, for downhole signal transmission and power transmission under the shielding of casings, this device will be greatly limited.

[0006] The purpose of the present invention is to construct a downhole wireless power signal transmission device and method, which can realize the transmission of electric energy and signals between multiple closed annuli downhole through the principle of electromagnetic coupling, and then monitor the temperature and pressure changes in the downhole B annulus and C annulus, and finally realize the wireless transmission of temperature and pressure signals in the closed annulus of deep-water drilling. At present, there is no report related to the said method and device. Summary of the Invention

[0007] In view of the above problems, the present invention provides a wireless temperature and pressure transmission device and method for a sealed annulus in deep - water drilling, which has a simple structure, high transmission efficiency, high transmission power, and is stable and reliable.

[0008] The device includes a wireless power - transmitting module, a wireless power - relaying module, a wireless power - receiving module, and a wireless signal - transmitting module.

[0009] Furthermore, the wireless power - transmitting module is based on the electromagnetic - coupling principle and wirelessly transmits electrical energy into the B annulus through coil coupling. It includes a protective housing, a cable connector, a rectifying and voltage - stabilizing module, a high - frequency inverter module, a compensation module, a power - transmitting coil, and a steel magnetic core.

[0010] During charging, the module is lowered to the downhole equipment to be charged through the winch on the upper part of the platform for coupling.

[0011] The protective housing is hollow inside, and the wireless power - transmitting module is placed therein. The power - transmitting coil is wound around the internal steel magnetic core.

[0012] The cable connector is used to connect the surface cable to the wireless power - transmitting module.

[0013] The rectifying and voltage - stabilizing module and the compensation module are responsible for converting alternating current into direct current and further stabilizing the direct current to keep the output ripple within the allowable range to ensure power quality.

[0014] Furthermore, the wireless power - relaying module is based on the electromagnetic - coupling principle and receives the electrical energy transmitted through coil coupling into the B annulus. It consists of a protective housing, a power - relaying coil, a rectifying and voltage - stabilizing module, a compensation module, a relay - end processing module, and a high - capacity battery module.

[0015] The B annulus is the annulus formed by the production casing and the technical casing of the subsea wellhead.

[0016] The wireless power - relaying module is installed in the protective housing. The protective housing is hollow inside and designed with grooves, and is fixed to the outside of the production casing through bolts. The power - relaying coil is wound in the internal grooves of the housing. The length of the relaying coil should be greater than the length of the transmitting coil, and the two should be coaxial.

[0017] The rectifying and voltage - stabilizing module, the compensation module, and the relay - end processing module are sequentially connected to the front end of the power - relaying coil.

[0018] The high - capacity battery module is connected to the rear end of the power - relaying coil. It includes multiple batteries and a battery management circuit (BMS) for monitoring the battery state. The multiple batteries are accommodated in the accommodation grooves in the module, and the battery management circuit is connected to the battery module.

[0019] Furthermore, the wireless power receiving module is based on the principle of electromagnetic coupling and wirelessly transmits power into the C annulus through coil coupling. It consists of a protective housing, a power receiving coil, a rectification and voltage regulation module, a compensation module, a receiving-end processing module, and a high-capacity battery module.

[0020] The C annulus is the annulus formed between the technical casing and the surface casing of the underwater wellhead.

[0021] The wireless power receiving module is installed in the protective housing. The inside of the protective housing is hollow and designed with a groove, and it is fixed to the outside of the technical casing by bolts. The power receiving coil is wound in the groove inside the housing. The length of the receiving coil should be greater than that of the relay coil, and the two should be coaxial.

[0022] The rectification and voltage regulation module, the compensation module, and the receiving-end processing module are sequentially connected to the front end of the power relay coil.

[0023] The high-capacity battery module is connected to the rear end of the power relay coil and includes multiple batteries and a battery management circuit for monitoring the battery status. The battery management circuit is connected to the battery module.

[0024] Furthermore, the wireless power relay module and the wireless power receiving module are respectively connected to the temperature and pressure gauges in the B annulus and the C annulus for power signal transmission.

[0025] Furthermore, after the charging is completed, the platform central control issues a control command to turn off the power transmission part for signal transmission.

[0026] The signal transmission module includes a signal wireless transmission module, a signal wireless relay module, and a signal wireless receiving module.

[0027] The coupling coils of the signal transmission module include a signal transmitting coil, a signal relay coil, and a signal receiving coil, and adopt a time-division multiplexing design with the coils of the power transmission module.

[0028] Furthermore, the signal wireless transmission module consists of a microcontroller module, a signal conditioning module, and a signal transmitting coil.

[0029] The microcontroller module integrates a driving module, an inverter module, and a signal modulation module. The driving module, the inverter module, and the signal modulation module are respectively connected to the downhole temperature and pressure gauge in the C annulus in sequence.

[0030] The signal conditioning module is connected to the microcontroller module and transmits the C annulus temperature and pressure signal to the signal transmitting coil.

[0031] The signal transmitting coil receives the temperature and pressure signal from the C annulus and transmits it to the signal relay module.

[0032] Further, the signal wireless relay module consists of a microcontroller module, a signal conditioning module, and a signal relay coil.

[0033] The microcontroller module integrates a drive module, an inverter module, and a signal modulation module, and the drive module, the inverter module, and the signal modulation module are respectively connected to the B-annulus downhole temperature and pressure gauge in sequence.

[0034] The signal conditioning module is connected to the microcontroller module and transmits the B-annulus temperature and pressure signal to the signal relay coil.

[0035] The signal relay coil receives the temperature and pressure signals from the B-annulus and the C-annulus and transmits them to the signal receiving module.

[0036] Further, the signal wireless receiving module consists of a microcontroller module, a signal conditioning module, a digital signal acquisition module, and a signal receiving coil.

[0037] The microcontroller module is connected to the digital signal acquisition module, integrates a drive module, an inverter module, and a signal demodulation module, demodulates the conditioned signal, and the demodulation method needs to match the modulation method at the transmitting end.

[0038] The digital signal acquisition module is connected to the cable, converts the analog signal into a digital signal and transmits it to the platform central control.

[0039] Further, the signal wireless transmission and the electric energy wireless transmission adopt wireless signal transmission methods with different frequency bands. The electric energy wireless transmission adopts low-frequency current, and the signal wireless transmission adopts high-frequency modulated wireless signals to gain the directional transmission level, improve the anti-interference ability of the signal, and transmit the data signal after modulation by loading it onto the electric energy transmission channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of a device for wireless transmission of temperature and pressure in a sealed annulus of a deepwater drilling rig proposed by the present invention

[0041] Figure 2 Flow chart of the electric energy wireless transmission of a device for wireless transmission of temperature and pressure in a sealed annulus of a deepwater drilling rig proposed by the present invention

[0042] Figure 3 Flow chart of the signal wireless transmission of a device for wireless transmission of temperature and pressure in a sealed annulus of a deepwater drilling rig proposed by the present invention

[0043] In the above figures, 1. Platform central control; 2. Platform power generation device; 3. Winch; 4. Semi-submersible platform; 5. Water surface; 6. Cable; 7. Riser; 8. Wellhead blowout preventer; 9. Wellhead deck; 10. Seabed mud surface; 11. Production casing; 12. Annulus B; 13. Technical casing; 14. Annulus C; 15. Surface casing; 16. Formation; 17. Annulus C temperature and pressure gauge; 18. Receiver high-capacity battery module; 19. Receiver power processing device and transmitter signal processing device; 20. Cable joint; 21. Transmitter power processing device; 22. Receiver signal processing device; 23. Power transmission coil; 24. Power relay coil; 25. Power receiving coil; 26. Steel magnetic core; 27. Protective housing of power wireless relay module; 28. Protective housing of power wireless receiving module; 29. Protective housing of power wireless transmitting module; 30. Power signal processing device at the relay end; 31. Relay end high-capacity battery module; 32. Annulus B temperature and pressure gauge; 33. Cement sheath. Detailed implementation manners

[0044] Next, the present invention will be specifically described through exemplary implementation manners. However, it should be understood that, without further description, the elements, structures and features in one implementation manner can also be beneficially combined into other implementation manners;

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. is based on the positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] Refer to Figures 1-3 , the present invention provides a device and method for wirelessly transmitting temperature and pressure in a sealed annulus of a deepwater well. The device and method are integrated in the modules 1-28, and the main implementation process is as follows:

[0047] 1) Initialize and self-check the device for wirelessly transmitting temperature and pressure in the sealed annulus of a deepwater well on the ground. If all components can work normally, proceed to the next step; otherwise, repeat this step.

[0048] 2) During the operation of running the casing, fix the power wireless relay module and the power wireless receiving module to the outer wall of the technical casing 13 and the outer wall of the surface casing 15 respectively by means of bolt fixation, and ensure that the power relay coil 24 and the power receiving coil 25 are coaxial.

[0049] 3) Connect the surface cable 6 to the wireless power transmission module through the cable joint 20;

[0050] 4) The winch 3 on the upper part of the platform lowers the wireless power transmission module to the downhole equipment to be charged for coupling, ensuring that the centers of the power transmission coil 23, the power relay coil 24, and the power receiving coil 25 are coaxial;

[0051] 5) The platform central control 1 issues a charging command to drive the platform power generation device to generate electricity, and transmits the electric energy to the wireless power transmission module through the cable 6;

[0052] 6) The transmitting - end power processing device 21 integrated in the wireless power transmission module converts the alternating current into direct current, further stabilizes the direct current, and finally transmits it to the power transmission coil 23;

[0053] 7) The above - mentioned forms a coupling coil with the power relay coil 24 for wireless power transmission. The relay - end power signal processing device 30 integrated in the wireless power relay module transmits the electric energy to the relay - end high - capacity battery module 31, and finally supplies power to the B - annulus temperature and pressure gauge 32;

[0054] 8) The power relay coil 24 further forms a coupling coil with the power receiving coil 25 for wireless power transmission. The receiving - end power processing device 19 integrated in the wireless power receiving module transmits the electric energy to the receiving - end high - capacity battery module 18, and finally supplies power to the C - annulus temperature and pressure gauge 17;

[0055] 9) After the battery is fully charged, the platform central control 1 issues a control command to turn off the power transmission part and perform signal transmission.

[0056] 10) The C - annulus temperature and pressure gauge 17 transmits the temperature and pressure signals to the signal wireless transmission module. The transmitting - end signal processing device 19 integrated in the signal wireless transmission module modulates the signals, converts the digital signals into analog signals suitable for wireless transmission, and transmits them to the signal transmission coil;

[0057] 11) The above - mentioned forms a coupling coil with the signal relay coil for wireless signal transmission. The relay - end power signal processing device 30 integrated in the signal wireless relay module modulates the temperature and pressure data stored in the B - annulus temperature and pressure gauge 32, and transmits it together with the temperature and pressure data transmitted by the signal transmission coil

[0058] to the signal receiving coil;

[0059] 12) The signal receiving coil transmits the received temperature and pressure data to the receiving - end signal processing device 22. After filtering and demodulation, the analog

[0060] signal is converted into a digital signal and transmitted to the platform central control 1 through the cable 6 to complete the signal transmission;

[0061] 13) After the wireless transmission of the electrical energy signal ends, the winch 3 hoists the wireless electrical energy transmission module to the platform to complete the recovery.

Claims

1. A device and method for wireless transmission of temperature and pressure in a closed annulus of deepwater drilling, characterized in that: include: Electric energy wireless transmission module: Based on the principle of electromagnetic coupling, the electric energy is wirelessly transmitted to the B ring space through coil coupling. It consists of a rectifier and voltage regulator module, a high-frequency inverter module, a compensation module and an electric energy transmitting coil. Power wireless relay module: Based on the principle of electromagnetic coupling, it provides long-term power supply to the B annulus temperature and pressure gauge, and realizes non-contact power transmission between the B annulus and the C annulus. It consists of a relay end processing module, a rectifier and voltage regulator module, a compensation module, a high-capacity battery module and a power relay coil. Power wireless receiving module: Based on the principle of electromagnetic coupling, it provides long-term power supply to the C annular temperature and pressure gauge. It consists of a receiving end processing module, a rectifier and voltage regulator module, a compensation module, a high-capacity battery module and a power receiving coil. Signal wireless transmission module: used to transmit the temperature and pressure signals in the B and C annuli underground to the central control of the wellbore platform. It includes a microcontroller module, a signal conditioning module, a digital signal acquisition module and a signal transmission coil. The signal transmission coil and the power wireless transmission module reuse the same coil. After the battery is charged, the power transmission part is turned off to perform signal transmission. A wireless transmission device for temperature and pressure in a closed annulus of a deep-water drilling well: a downhole wireless transmission device integrating a wireless power transmission module, a wireless power relay module, a wireless power receiving module, and a wireless signal transmission module. The wireless transmission principle of the device is based on the principle of electromagnetic coupling, and realizes wireless transmission of power signals in multiple layers of closed annuli underground. The wireless power transmission module is composed of a rectifier and voltage regulator module, a high-frequency inverter module, a compensation module, and a power transmission coil, and transmits power wirelessly to the B annulus through coil coupling; the wireless power relay module is composed of a relay end processing module, a rectifier and voltage regulator module, a compensation module, a high-capacity battery module, and a power relay coil, and provides long-term power supply to the B annulus temperature and pressure gauge, and realizes non-contact power transmission between the B annulus and the C annulus; the wireless power receiving module is composed of a receiving end processing module, a rectifier and voltage regulator module, a compensation module, a high-capacity battery module, and a power receiving coil, and provides long-term power supply to the C annulus temperature and pressure gauge. The signal wireless transmission module is composed of a microcontroller module, a signal conditioning module, a digital signal acquisition module and a signal transmission coil. The signal transmission coil and the power wireless transmission module reuse the same coil. After the battery is charged, the power transmission part is turned off and signal transmission is performed to transmit the temperature and pressure signals in the B annulus and C annulus underground to the central control of the well platform.

2. The electric energy wireless transmission module as claimed in claim 1, when charging, is lowered to the underground device to be charged by the winch on the upper part of the platform for coupling. It includes a protective shell, a cable connector, a rectifier and voltage regulator module, a high-frequency inverter module, a compensation module, an electric energy transmission coil, and a steel magnetic core. The protective shell is hollow inside, and the electric energy wireless transmission module is placed inside. The electric energy transmitting coil is wound on the internal steel core, which can increase the magnetic flux and thus enhance the magnetic field coupling between the transmitting end and the receiving end, so that the magnetic field generated by the transmitting coil is more concentrated around the receiving coil, thereby increasing the coil coupling coefficient. According to the wireless power transmission power formula (Where P is the transmission power, k is the coupling coefficient, M is the mutual inductance, P1 and P2 are the input powers of the transmitting end and the receiving end respectively). Increasing the coupling coefficient k can increase the transmission power to a certain extent. The cable joint is used to connect the well cable with the electric energy wireless transmission module and keep the joint sealed and insulated. The core of the rectification and voltage stabilization module is a full-wave rectification circuit, a filtering circuit and a voltage stabilization circuit, which can filter out the AC component in the rectified pulsating DC power, and further stabilize the voltage to keep the output ripple within the allowable range, ensure the power quality, and finally convert the AC power into DC power. The core of the high-frequency inverter module is a full-bridge high-frequency inverter circuit. By combining multiple electrolytic capacitors and high-frequency film capacitors in parallel, the impact of input power supply voltage fluctuations on the entire system is reduced. The full-bridge inverter circuit is also equipped with a negative voltage circuit, which can effectively limit the ringing phenomenon caused by parasitic inductance and capacitance, and reduce the misconduction problem caused by electromagnetic interference. The core of the compensation module is the compensation circuit, which offsets the reactive power demand of the inductive load by providing reactive power, thereby improving the power factor of the system, reducing voltage fluctuations in the power grid, maintaining voltage stability, and reducing line losses.

3. The electric energy wireless relay module as described in claim 1 comprises a protective shell, an electric energy relay coil, a rectifier and voltage regulator module, a compensation module, a relay end processing module and a high-capacity battery module. The protective shell is hollow and has a groove, which is fixed to the outside of the production casing by bolts. The power relay coil is wound in the groove inside the shell. The length of the relay coil should be greater than the length of the transmitting coil, and when charging and signal transmission are performed, the two are ensured to be coaxial to improve coupling efficiency and reduce magnetic field leakage. The three modules of the rectification and voltage stabilization module, the compensation module, the relay end processing module and the electric energy wireless transmission module have the same composition and function. The high-capacity battery module includes a plurality of batteries and a battery management circuit for monitoring the battery status. The plurality of batteries are accommodated in a receiving slot within the module, and the battery management circuit is connected to the internal batteries. The battery management circuit is mainly used to monitor the changes in internal battery parameters. It includes a power module, a detection module and an active balancing module. The power module is connected to the battery module to control the battery module to power the underground temperature and pressure gauge equipment; the detection module is used to monitor the voltage, current and temperature of the battery module and provide overvoltage and overcurrent protection. The active balancing module uses capacitive balancing to keep the voltage of each single cell consistent and extend the service life of the battery pack.

4. The electric energy wireless receiving module as described in claim 1 comprises a protective shell, an electric energy receiving coil, a receiving end processing module, a rectifying and voltage stabilizing module, a compensation module, and a high-capacity battery module. The protective shell is hollow and has a groove, which is fixed to the outside of the technical sleeve by bolts. The power receiving coil is wound in the groove inside the shell. The length of the receiving coil should be greater than the length of the relay coil. When charging and signal transmission are performed, the two are ensured to be coaxial to improve coupling efficiency and reduce magnetic field leakage. The three modules of the rectification and voltage stabilization module, the compensation module, the relay-end processing module, the electric energy wireless transmission module and the electric energy wireless relay module have the same composition and function. The high-capacity battery module and the battery module in the electric energy wireless relay module have the same composition and function.

5. The signal wireless transmission module according to claim 1, characterized in that: The signal wireless transmission coil and the power wireless transmission coil are time-division multiplexed, and are composed of a signal wireless transmission module, a signal wireless relay module, and a signal wireless receiving module, which are used to transmit the temperature and pressure signals in the B annulus and C annulus underground to the platform central control on the well. When the battery is fully charged, the platform central control issues a control command to turn off the power transmission part and perform signal transmission. The command signal is transmitted from the platform central control through a cable to the microcontroller module in the signal receiving module for modulation, and the signal is analyzed by the microcontroller module in the signal transmission module to realize the signal transmission start control. The signal wireless transmission module is composed of a microcontroller module, a signal conditioning module and a signal transmission coil. The microcontroller module is characterized in that it integrates a drive module, an inverter module and a signal modulation module. The drive module, the inverter module and the signal modulation module are connected to the C-annulus downhole temperature and pressure gauge in order, respectively. The weak signal output by the drive module control circuit is converted into a high-voltage, high-current drive signal; the inverter module is used to reduce the input DC power supply voltage fluctuation to ensure the stable operation of the system; the signal modulation module converts the digital signal stored in the downhole temperature and pressure gauge into an analog signal suitable for wireless transmission. The signal conditioning module processes the weak and noisy signal through a signal conditioning circuit (amplifier, filter) to improve the signal-to-noise ratio. The signal transmission coil is the same coil that adopts a time-sharing multiplexing design with the power receiving coil. The signal wireless relay module is composed of a microcontroller module, a signal conditioning module and a signal relay coil, and is used to process the temperature and pressure data stored in the B-annulus downhole temperature and pressure gauge, and transmit the temperature and pressure data stored in the C-annulus downhole temperature and pressure gauge transmitted by the signal transmitting coil to the signal receiving coil. The design and function of the microcontroller module and the signal conditioning module are the same as those of the corresponding modules in the signal wireless transmitting module; the signal relay coil is the same coil that uses a time-division multiplexing design with the power relay coil. The signal wireless receiving module is composed of a microcontroller module, a signal conditioning module, a digital signal acquisition module and a signal receiving coil, which is used to receive the temperature and pressure data transmitted by the signal relay coil and send it to the platform central control through a cable for processing. The microcontroller module is characterized in that it integrates a drive module, an inverter module and a signal demodulation module. The drive module, the inverter module and the corresponding modules in the signal wireless transmitting module have the same design and function. The signal demodulation module demodulates the conditioned signal, and the demodulation method needs to match the modulation method of the transmitting end; the signal conditioning module and the corresponding modules in the signal wireless transmitting module have the same design and function; the digital signal acquisition module is connected to the cable, converts the analog signal into a digital signal and transmits it to the platform central control; the signal receiving coil is the same coil that adopts a time-division multiplexing design with the power transmitting coil.

6. The wireless transmission of signals as described in claim 5 adopts a wireless signal transmission method with a different frequency band from the wireless transmission of electric energy, and realizes the transmission of electric energy and signals through time-division multiplexing in the same coil. The wireless transmission of electric energy adopts low-frequency current, which has better propagation characteristics in the underground environment compared with high-frequency current, and has strong penetration and anti-interference capabilities. It can penetrate thicker rock formations and casings, and has less propagation loss in complex geological structures and narrow spaces, ensuring the stability of electric energy transmission. In addition, low-frequency current is not easily affected by high-frequency interference sources such as underground drilling equipment and other electronic equipment, and can provide a more stable energy transmission channel. The wireless transmission of signals adopts high-frequency modulated wireless signals to increase the level of gain-oriented transmission, improve the anti-interference ability of the signal, and transmit it by modulating the data signal and loading it onto the electric energy transmission channel.

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