Wireless powered device and control method thereof, electroencephalogram monitoring system

Abstract

This application relates to a wireless power supply device and its control method, as well as an electroencephalogram (EEG) signal monitoring system. The wireless power supply device includes an energy transmitting module and an energy receiving module, and a resonance compensation module connected between the energy transmitting module and the energy receiving module. The control method includes: acquiring the transmission efficiency of the wireless power supply device; and, if the transmission efficiency is less than a preset efficiency threshold, acquiring the phase angle of the energy transmitting module or the energy receiving module; and, if the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold, adjusting the parameters of the resonance compensation module until a preset condition is met; the first preset phase angle threshold is greater than a second preset phase angle threshold, and the preset condition includes the absolute value of the phase angle being less than the second preset phase angle threshold or the number of adjustments reaching a preset number threshold. Using the control method provided in this application, adjustments can be made when the transmission efficiency of the wireless power supply device decreases, so that the wireless power supply device can operate normally.

Description

Technical Field

[0001] This application relates to the field of medical electronics technology, and in particular to a wireless power supply device and its control method, and an electroencephalogram (EEG) signal monitoring system. Background Technology

[0002] With the development of biomedical electronics and integrated circuits, wearable implantable medical devices have also seen significant advancements. For example, stereotactic electroencephalography (SEEG) is a technique that uses electrodes implanted deep in the brain to precisely locate epileptic foci.

[0003] In traditional technologies, implantable medical devices are powered by wireless power transfer between an external wearable device and the implanted device. However, when patients move freely while wearing the implanted medical device, the efficiency of wireless power transfer decreases, and it can even lead to a power outage. Summary of the Invention

[0004] Therefore, it is necessary to provide a wireless power supply device and its control method, as well as an electroencephalogram (EEG) signal monitoring system, that can ensure the normal transmission of wireless energy, in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides a control method for a wireless power supply device. The wireless power supply device includes an energy transmitting module and an energy receiving module, as well as a resonance compensation module connected between the energy transmitting module and the energy receiving module. The control method includes:

[0006] Obtain the transmission efficiency of the wireless power supply device, and if the transmission efficiency is less than a preset efficiency threshold, obtain the phase angle of the energy transmitting module or the energy receiving module;

[0007] If the absolute value of the phase angle is greater than or equal to the first preset phase angle threshold, adjust the parameters of the resonance compensation module until the preset conditions are met; the preset conditions include the absolute value of the phase angle being less than the second preset phase angle threshold or the number of adjustments reaching the preset number threshold, and the first preset phase angle threshold being greater than the second preset phase angle threshold.

[0008] In one embodiment, after adjusting the parameters of the resonance compensation module, the control method further includes:

[0009] After a preset time period, determine whether the preset conditions are met;

[0010] If the preset conditions are not met, return to the step of adjusting the parameters of the resonance compensation module.

[0011] In one embodiment, the resonance compensation module includes a first resonance compensation component connected to the energy emission module. The first resonance compensation component includes a first adjustable capacitor, and a second resonance compensation component includes a second adjustable capacitor. The first preset phase threshold includes a first sub-threshold. Obtaining the phase angle of the energy emission module or the energy receiving module includes:

[0012] Obtain the phase angle at the input of the first resonant compensation component;

[0013] When the absolute value of the phase angle is greater than or equal to the first preset phase threshold, adjust the parameters of the resonance compensation module, including:

[0014] If the absolute value of the phase angle is greater than or equal to the first sub-threshold, the first comparison result is determined based on the phase angle and the first sub-threshold.

[0015] If the phase angle is greater than or equal to the first sub-threshold in the first comparison result, increase the capacitance value of the first adjustable capacitor;

[0016] If the first comparison result is a negative value where the phase angle is less than or equal to the first sub-threshold, the capacitance value of the first adjustable capacitor is reduced.

[0017] In one embodiment, the resonance compensation module includes a second resonance compensation component connected to the energy receiving module. The second resonance compensation component includes a second adjustable capacitor. The first preset phase threshold includes a second sub-threshold. Obtaining the phase angle of the energy transmitting module or the energy receiving module includes:

[0018] Obtain the phase angle at the output of the second resonant compensation component;

[0019] When the absolute value of the phase angle is greater than or equal to the first preset phase threshold, adjust the parameters of the resonance compensation module, including:

[0020] If the absolute value of the phase angle is greater than or equal to the second sub-threshold, the second comparison result is determined based on the phase angle and the second sub-threshold.

[0021] If the second comparison result is that the phase angle is greater than or equal to the second sub-threshold, reduce the capacitance value of the second adjustable capacitor;

[0022] If the second comparison result is a negative value where the phase angle is less than or equal to the second sub-threshold, the capacitance value of the second adjustable capacitor is increased.

[0023] In one embodiment, the control method further includes:

[0024] When the absolute value of the phase angle is less than the first preset phase angle threshold, the mutual inductance of the magnetic coupling coil in the resonant compensation module is determined.

[0025] Adjust the position of the transmitting coil in the resonant compensation module according to the mutual inductance until the transmitting coil in the resonant compensation module reaches the target position.

[0026] In one embodiment, the energy emission module includes a capacitor array assembly, and adjusting the position of the emission coil in the resonance compensation module according to mutual inductance includes:

[0027] The offset direction angle of the transmitting coil is determined based on the capacitor array assembly;

[0028] The offset distance of the transmitting coil is determined based on the mutual inductance and the preset mapping relationship; the preset mapping relationship refers to the correspondence between the mutual inductance and the offset distance.

[0029] Adjust the position of the transmitting coil based on the offset direction angle and offset distance.

[0030] Secondly, one embodiment of this application provides a wireless power supply device, including a control module, an energy transmitting module, an energy receiving module, and a resonance compensation module. The resonance compensation module is connected between the energy transmitting module and the energy receiving module, and the control module is connected to the energy transmitting module, the energy receiving module, and the resonance compensation module.

[0031] The energy transmitting module is used to transmit the electrical energy provided by the power supply module to the energy receiving module through the resonant compensation module;

[0032] The control module is used to execute the steps of the control method provided in the first aspect above.

[0033] In one embodiment, the control module includes a first control component and a second control component, and the resonance compensation module includes a first resonance compensation component, a magnetic coupling coil, and a second resonance compensation component.

[0034] The first control component is communicatively connected to the second control component, the first resonant compensation component is connected to the energy transmission module, the second resonant compensation component is connected to the energy receiving module, the first control component is connected to the first resonant compensation component and the energy transmission module, and the second control component is connected to the second resonant compensation component and the energy receiving module.

[0035] Thirdly, one embodiment of this application provides an electroencephalogram (EEG) signal monitoring system, including an external device and an internal implantable device. The external device includes a power supply module, a first control component, an energy transmission module, a first resonance compensation component, and a transmitting coil in a magnetic coupling coil, as provided in the second aspect above. The internal implantable device includes a second control component, an energy receiving module, a second resonance compensation component, and a receiving coil in a magnetic coupling coil, as provided in the second aspect above.

[0036] In one embodiment, the implantable device further includes an electrical stimulation component, electrode leads, and an electrical signal acquisition component, with the second control component connected to the electrical stimulation component and the electrical signal acquisition component.

[0037] The second control component is used to receive the electrical stimulation command sent by the first control component, and control the electrical stimulation component to generate electrical pulse signals based on the electrical stimulation command;

[0038] The second control component is also used to acquire electrical signals on the electrode wires through the electrical signal acquisition component.

[0039] The aforementioned wireless power supply device and its control method, as well as the EEG signal monitoring system, involve a control method that acquires the transmission efficiency of the wireless power supply device. When the transmission efficiency is less than a preset efficiency threshold, the method acquires the phase angle of the energy transmitting module or energy receiving module. When the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold, the method adjusts the parameters of the resonant module until preset conditions are met. These preset conditions include the absolute value of the phase angle being less than a second preset phase angle threshold or the number of adjustments reaching a preset number threshold, and the first preset phase angle threshold being greater than the second preset phase angle threshold. In this embodiment, when the transmission efficiency of the wireless power supply device decreases, and it is determined that the decrease is due to the wireless power supply device being in a detuned state (i.e., the absolute value of the phase angle of the energy transmitting module or energy receiving module is greater than the first preset phase angle threshold), resonance compensation of the wireless power supply device can be achieved by adjusting the parameters of the resonance compensation module. In other words, this embodiment can provide high-precision dynamic compensation for resonant frequency shifts caused by environmental temperature drift or component aging in the wireless power supply device, thereby improving the transmission efficiency of the wireless power supply device, ensuring its normal operation, and thus making the control method of the wireless power supply device more practical. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a wireless power supply device in one embodiment;

[0042] Figure 2 This is a schematic diagram of the wireless power supply device in another embodiment;

[0043] Figure 3 This is a flowchart illustrating the steps of a control method for a wireless power supply device in one embodiment.

[0044] Figure 4 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0045] Figure 5 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0046] Figure 6 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0047] Figure 7 This is a schematic diagram of the structure of the first adjustable capacitor in one embodiment;

[0048] Figure 8 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0049] Figure 9 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0050] Figure 10 This is a flowchart illustrating the steps of a control method for a wireless power supply device in another embodiment.

[0051] Figure 11 This is a schematic diagram of the structure of an electroencephalogram (EEG) signal monitoring system in one embodiment;

[0052] Figure 12 This is a schematic diagram of the structure of an implanted device in one embodiment;

[0053] Figure 13 This is a schematic diagram of the control link of an EEG signal monitoring system in one embodiment. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0055] It should be noted that the terms "first," "second," etc., used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion.

[0056] First, before introducing the technical solutions of the embodiments disclosed in this application, the background technology or technological evolution on which the embodiments of this application are based will be introduced. In the field of medical electronics technology, with the development of biomedical electronic technology and integrated circuits, wearable implantable medical devices have also seen great development. For example, stereotactic electroencephalography (SEEG) is a technology that uses electrodes implanted deep in the brain to precisely locate epileptic foci. The treatment period usually lasts 2-4 weeks, during which the implanted electrodes need to continuously monitor the electrical activity of the epileptic focus 24 hours a day. Traditional methods restrict the patient's range of motion to the vicinity of the bed due to physical cables, which not only reduces the quality of life but also increases the risk of infection and electrode displacement. Wearable wireless power supply systems can solve the above problems, that is, through wireless power transmission between the external head-mounted device and the subcutaneous implanted device, physical cable connections can be eliminated and the patient's freedom of movement can be improved. However, this free-movement characteristic poses a challenge to power supply stability: daily patient movements may cause relative displacement of coils within the wearable wireless power supply system, leading to a decrease in magnetic coupling efficiency; temperature changes caused by environmental variations can cause drift in the parameters of high-frequency circuit components within the system, exacerbating the detuning of the resonant circuit; and alterations in the electrical properties of biological tissues during long-term implantation can further change the response of the compensation network in the system. These disturbances can cause a sharp drop in the energy transmission efficiency of the wearable wireless power supply system, and may even lead to a power outage. Therefore, this application provides a control method for a wireless power supply device that ensures normal power supply to the wearable wireless power supply system.

[0057] The technical solution of this application and how the technical solution of this application solves the technical problem are described in detail below with specific embodiments.

[0058] The control method for wireless power supply devices provided in this application embodiment can be applied to, for example... Figure 1 The wireless power supply device 10 shown includes an energy transmitting module 11, a resonance compensation module 12, and an energy receiving module 13. The energy transmitting module 11 wirelessly transmits electrical energy supplied by the power supply module to the energy receiving module 13 via the resonance compensation module 12. The wireless power supply device 10 also includes a control module 14, which controls the operation of the energy transmitting module 11, the resonance compensation module 12, and the energy receiving module 13 within the wireless power supply device 10.

[0059] like Figure 1As shown, the resonant compensation module 12 includes a first resonant compensation component 121, a transmitting coil 122, a receiving coil 123, and a second resonant compensation component 124. The transmitting coil 122 and the receiving coil 123 form a magnetically coupled coil 125. The input terminal of the first resonant compensation component 121 is connected to the energy transmitting module 11, and the output terminal of the first resonant compensation component 121 is connected to the transmitting coil 122. The receiving coil 123 is connected to the input terminal of the second resonant compensation component 124, and the output terminal of the second resonant compensation component 124 is connected to the energy receiving module 13. The transmitting coil 122 and the receiving coil 123 achieve wireless power transmission through magnetic resonant coupling. The first resonant compensation component 121 is used to compensate for the energy emitted by the energy transmitting module 11, and the second resonant compensation component 124 is used to compensate for the energy received by the energy receiving module 13.

[0060] like Figure 2 As shown, the energy transmitting module 11 is an inverter, the resonant compensation module 12 is an LCC-S compensation network, and the energy receiving module 13 is a rectifier. The first resonant compensation component 121 includes an inductor. ,capacitance First adjustable capacitor The second resonant compensation component 124 includes a second adjustable capacitor. . Figure 2 Chinese V AB V can be supplied by the power supply module via a DC-DC converter. AB The control module 14 regulates the power supply to meet the power requirements of the energy receiving module 13 while achieving optimal efficiency for the wireless power supply device 10. The inverter acquires AC energy, voltage, and current. The frequency of this AC energy is set and regulated by the control module 14, and then output to the gates of the inverter's various field-effect transistors via the driver chip for switching control. AC energy of a specific frequency is transferred to the energy receiving module 13 through a resonant compensation module. The resonant compensation module includes resonant elements. , The values ​​of C1 and C2, the resonant elements, can be expressed as: , , The resonant compensation module enables a coupling-independent resonant state, meaning the values ​​of the resonant components are independent of the mutual inductance of the magnetic coupling coil 125, as well as the distance and position of the transmitting and receiving coils. In other words, misalignment between the transmitting and receiving coils will not affect the resonant state of the wireless power supply device. Furthermore, the resonant compensation module ensures that the voltage at the rectifier port is a constant voltage independent of the load, allowing the wireless power supply device to withstand a wide range of load variations.

[0061] Please see Figure 3This application provides a control method for a wireless power supply device in one embodiment, and will describe the method using an application to a control module in the wireless power supply device as an example. In this embodiment, the control method includes:

[0062] Step 300: Obtain the transmission efficiency of the wireless power supply device, and if the transmission efficiency is less than a preset efficiency threshold, obtain the phase angle of the energy transmitting module or the energy receiving module.

[0063] The transmission efficiency of a wireless power supply device refers to the ratio between the energy received by the energy receiving module and the energy emitted by the energy transmitting module. The control module acquires the first energy received by the energy receiving module and the second energy emitted by the energy transmitting module, and calculates the ratio of the first energy to the second energy to obtain the transmission efficiency of the wireless power supply device.

[0064] In an optional embodiment, the control module acquires the output voltage of the energy receiving module, i.e., the voltage after rectification by the rectifier. and current The first power of the energy receiving module can be calculated. ; Obtain the voltage at the input terminal of the energy emission module, i.e., the input terminal of the inverter. and current The second power of the energy emission module can be calculated. Transmission efficiency of wireless power supply equipment .

[0065] The preset efficiency threshold can be set by the user and stored in the control module. Specifically, the preset efficiency threshold is 80% of the maximum transmission efficiency. After obtaining the transmission efficiency of the wireless power supply device, the control module compares this efficiency with the preset efficiency threshold. If the transmission efficiency is greater than or equal to the preset efficiency threshold, it indicates that the wireless power supply device is working normally; if the transmission efficiency is less than the preset efficiency threshold, it indicates that the relative displacement of the transmitting and receiving coils in the wireless power supply device or environmental changes have caused detuning of the resonant circuit in the wireless power supply device, resulting in a decrease in transmission efficiency. In this case, the phase angle of the energy transmitting module or the phase angle of the energy receiving module is obtained. If compensation for the resonant frequency of the energy transmitting module is required, the input voltage and current of the energy transmitting module are obtained, and the phase angle of the energy transmitting module is determined based on these voltage and current. If compensation for the resonant frequency of the energy receiving module is required, the output voltage and current of the energy receiving module are obtained, and the phase angle of the energy receiving module is determined based on these voltage and current.

[0066] Step 310: When the absolute value of the phase angle is greater than or equal to the first preset phase angle threshold, adjust the parameters of the resonance compensation module until the preset conditions are met; the preset conditions include that the absolute value of the phase angle is less than the second preset phase angle threshold or the number of adjustments reaches the preset number threshold, and the first preset phase angle threshold is greater than the second preset phase angle threshold.

[0067] The first and second preset phase angle thresholds can be preset by the user according to the actual application scenario and stored in the control module. After obtaining the phase angle of the energy transmission module, the control module compares the absolute value of the phase angle with the first sub-threshold in the first preset phase angle threshold. If the absolute value of the phase angle is greater than or equal to the first sub-threshold, it indicates that the reduced transmission efficiency of the wireless power supply device is caused by detuning on the energy transmission module side. The parameters of the resonance compensation module are then adjusted to compensate for the resonant frequency of the energy transmission module. This adjustment process is repeated until the absolute value of the phase angle is less than (or equal to) the second preset phase angle threshold or the number of adjustments reaches a preset threshold. The absolute value of the phase angle of the energy transmission module being less than (or equal to) the second preset phase angle threshold indicates that by adjusting the parameters of the resonance compensation module, the energy transmission module is brought to near a fully resonant state, meaning that the resonance compensation module can accurately compensate for the detuning on the energy transmission module side. Specifically, the preset threshold is 5 times.

[0068] Similarly, after acquiring the phase angle of the energy receiving module, the control module compares the absolute value of the phase angle with the second sub-threshold in the first preset phase angle threshold. If the absolute value of the phase angle is greater than or equal to the second sub-threshold, it indicates that the reduced transmission efficiency of the wireless power supply device is caused by detuning on the energy receiving module side. The parameters of the resonance compensation module are then adjusted to compensate for the resonant frequency of the energy receiving module. This adjustment process is repeated until the absolute value of the phase angle is less than (or equal to) the second preset phase angle threshold or reaches a preset number of times. The absolute value of the phase angle of the energy receiving module being less than (or equal to) the second preset phase angle threshold indicates that by adjusting the parameters of the resonance compensation module, the energy receiving module is brought closer to a fully resonant state, meaning the resonance compensation module can accurately compensate for the detuning on the energy receiving module side. The second preset phase angle threshold can also be different for the energy transmitting module and the energy receiving module. Optionally, the second sub-threshold is 5 degrees, and the second preset phase angle threshold is 2 degrees.

[0069] The control method for a wireless power supply device provided in this application embodiment obtains the transmission efficiency of the wireless power supply device, and when the transmission efficiency is less than a preset efficiency threshold, obtains the phase angle of the energy transmitting module or the energy receiving module; when the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold, adjusts the parameters of the resonant module until a preset condition is met; the first preset phase angle threshold is greater than a second preset phase angle threshold; the preset condition includes the absolute value of the phase angle being less than the second preset phase angle threshold or the number of adjustments reaching a preset number threshold. In this embodiment, when the transmission efficiency of the wireless power supply device decreases, and it is determined that the decrease in transmission efficiency is due to the wireless power supply device being in a detuned state, i.e., the absolute value of the phase angle of the energy transmitting module or the energy receiving module is greater than or equal to the first preset phase angle threshold, then the resonant compensation of the wireless power supply device can be achieved by adjusting the parameters of the resonant compensation module. In other words, this embodiment can provide high-precision dynamic compensation for the frequency shift of the resonant point caused by environmental temperature drift or component aging in the wireless power supply device, which can improve the transmission efficiency of the wireless power supply device, ensure the normal operation of the wireless power supply device, and thus make the control method for the wireless power supply device more practical.

[0070] In one embodiment, such as Figure 4 As shown, after adjusting the parameters of the resonance compensation module, the control method further includes the following steps:

[0071] Step 400: After a preset time period, determine whether the preset conditions are met.

[0072] After the control module adjusts the parameters of the resonance compensation module, after a preset time interval, the phase angle of the energy transmitting module or the energy receiving module is acquired again. The absolute value of this phase angle is compared with a second preset phase angle threshold to determine whether the absolute value of the phase angle is less than the second preset phase angle threshold; or after a preset time interval, it is determined whether the number of adjustments has reached a preset number threshold. Optionally, the preset time interval is 10ms or 20ms.

[0073] If the preset conditions are not met, return to the step of adjusting the parameters of the resonance compensation module.

[0074] If the control module determines that the preset conditions are not met, i.e., the absolute value of the phase angle of the energy transmitting module or the energy receiving module is greater than or equal to the second preset phase angle threshold, or the number of adjustments has not reached the preset number threshold, then it returns to the step of adjusting the parameters of the resonance compensation module.

[0075] In this embodiment, after adjusting the parameters of the resonance compensation module, a preset time interval is followed by a determination of whether the preset conditions are met. This ensures that the resonance compensation module is in a steady state after parameter adjustment before judging whether the preset conditions are met, which improves the accuracy of the judgment and thus enhances the effectiveness of compensating for the detuning of the wireless power supply device. Consequently, the control method of the wireless power supply device has higher reliability.

[0076] In one embodiment, the resonant compensation module includes a first resonant compensation component and a second resonant compensation component. The first resonant compensation component includes a first adjustable capacitor, and the second resonant compensation component includes a second adjustable capacitor. The first preset phase threshold includes a first sub-threshold and a second sub-threshold. The first sub-threshold and the second sub-threshold are different.

[0077] When the phase angle of the energy emission module is obtained, such as Figure 5 As shown, one implementation method involves obtaining the phase angle of an energy transmitting module or an energy receiving module, and the implementation method includes:

[0078] Step 500: Obtain the phase angle of the input terminal of the first resonant compensation component.

[0079] If the control module obtains the phase angle of the energy emission module, that is, the phase angle of the output terminal of the energy emission module, in other words, it obtains the phase angle of the input terminal of the first resonant compensation component, that is, it calculates the phase angle based on the obtained voltage and current of the input terminal of the first resonant compensation component.

[0080] Having obtained the phase angle at the input of the first resonant compensation component, the subsequent adjustment of the parameters of the resonant compensation module involves adjusting the capacitance value of the corresponding first adjustable capacitor in the first resonant compensation component. Based on this, an implementation method is provided for adjusting the parameters of the resonant compensation module when the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold. This implementation method includes:

[0081] Step 510: If the absolute value of the phase angle is greater than or equal to the first sub-threshold, determine the first comparison result based on the phase angle and the first sub-threshold.

[0082] When the control module determines that the absolute value of the phase angle is greater than or equal to the first sub-threshold in the first preset phase angle threshold, it will determine the first comparison result based on the phase angle and the first sub-threshold. It is understandable that the phase angle can be compared with the first sub-threshold, or it can be compared with the negative value of the first sub-threshold.

[0083] Step 520: If the phase angle is greater than or equal to the first sub-threshold in the first comparison result, increase the capacitance value of the first adjustable capacitor.

[0084] If the control module compares the phase angle with the first sub-threshold and determines that the phase angle is greater than or equal to the first sub-threshold, it indicates that the wireless power supply device is capacitively detuned, that is, the resonant compensation module is capacitively detuned, and then the capacitance value of the first adjustable capacitor is increased.

[0085] Step 530: If the first comparison result is a negative value of the phase angle less than or equal to the first sub-threshold, reduce the capacitance value of the first adjustable capacitor.

[0086] If the control module compares the phase angle with the negative value of the first sub-threshold and determines that the phase angle is less than or equal to the negative value of the first sub-threshold, it indicates that the wireless power supply device is inductively detuned, that is, the resonant compensation module is inductively detuned, and then the capacitance value of the first adjustable capacitor is reduced.

[0087] In this embodiment, adjusting the parameters of the resonant compensation component mainly involves adjusting the first adjustable capacitor of the first resonant compensation component in the resonant compensation module. This method of adjusting the parameters of the resonant compensation module is simple and easy to implement. Furthermore, based on the first comparison result between the phase angle and the first sub-threshold, it can be determined whether the resonant compensation module is inductively detuned or capacitively detuned, and the capacitance value of the first adjustable capacitor can be adjusted accordingly. This allows for more accurate detuning compensation for the wireless power supply device, ensuring its normal operation and thus enhancing its practicality. In addition, by adjusting the first adjustable capacitor, the adjusted resonant frequency can be anchored to a preset frequency, maintaining resonance synchronization between the energy transmitting module and the energy receiving module, and significantly suppressing reactive power dissipation.

[0088] In addition, this embodiment can provide flexible adjustment variables for soft-switching regulation of the inverter in the energy emission module.

[0089] When the phase angle of the energy receiving module is obtained, such as Figure 6 As shown, another implementation method for obtaining the phase angle of an energy transmitting module or an energy receiving module is provided, which includes:

[0090] Step 600: Obtain the phase angle of the output terminal of the second resonant compensation component.

[0091] If the control module obtains the phase angle of the energy receiving module, that is, the phase angle of the output terminal of the energy receiving module, in other words, it obtains the phase angle of the output terminal of the second resonant compensation component, that is, it calculates the phase angle based on the obtained voltage and current of the output terminal of the second resonant compensation component.

[0092] Having obtained the phase angle at the output of the second resonant compensation component, the subsequent adjustment of the parameters of the resonant compensation module involves adjusting the capacitance value of the corresponding second adjustable capacitor in the second resonant compensation component. Based on this, another implementation method is provided for adjusting the parameters of the resonant compensation module when the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold. This implementation method includes:

[0093] Step 610: If the absolute value of the phase angle is greater than or equal to the second sub-threshold, determine the second comparison result based on the phase angle and the second sub-threshold.

[0094] When the control module determines that the absolute value of the phase angle is greater than or equal to the second sub-threshold in the first preset phase angle threshold, it will determine a second comparison result based on the phase angle and the second sub-threshold. It is understandable that the phase angle can be compared with the second sub-threshold, or it can be compared with the negative value of the second sub-threshold.

[0095] Step 620: If the second comparison result is that the phase angle is greater than or equal to the second sub-threshold, reduce the capacitance value of the second adjustable capacitor.

[0096] If the control module compares the phase angle with the second sub-threshold and determines that the phase angle is greater than or equal to the second sub-threshold, it indicates that the wireless power supply device is inductively detuned, that is, the resonant compensation module is inductively detuned, and then the capacitance value of the second adjustable capacitor is reduced.

[0097] Step 630: If the second comparison result is a negative value of the phase angle less than or equal to the second sub-threshold, increase the capacitance value of the second adjustable capacitor.

[0098] If the control module compares the phase angle with the negative value of the second sub-threshold and determines that the phase angle is less than or equal to the negative value of the second sub-threshold, it indicates that the wireless power supply device is capacitively detuned, that is, the resonant compensation module is capacitively detuned, and then the capacitance value of the second adjustable capacitor is increased.

[0099] In this embodiment, adjusting the parameters of the resonant compensation component mainly involves adjusting the second adjustable capacitor of the second resonant compensation component in the resonant compensation module. This method of adjusting the parameters of the resonant compensation module is simple and easy to implement. Furthermore, based on the second comparison result between the phase angle and the second sub-threshold, it can be determined whether the resonant compensation module is inductively detuned or capacitively detuned, and the capacitance value of the second adjustable capacitor can be adjusted accordingly. This allows for more accurate detuning compensation for the wireless power supply device, ensuring its normal operation and thus enhancing its practicality. In addition, by adjusting the second adjustable capacitor, the adjusted resonant frequency can be anchored to a preset frequency, maintaining resonance synchronization between the energy transmitting module and the energy receiving module, and significantly suppressing reactive power dissipation.

[0100] In an optional embodiment, the structure of the first adjustable capacitor or the second adjustable capacitor is as follows: Figure 7 As shown, it includes two field-effect transistors and an adjustable capacitor C. adj and fixed capacitor C const The gate S of the two field-effect transistors a and S b This is the control terminal for the adjustable capacitor. It is the alternating current flowing through the transmitting and receiving coils in the resonant compensation module, which is adjusted by regulating the drive signal and current of the field-effect transistor. The phase difference between the phase angles is used to equivalently change the capacitance value of the circuit. It can be understood that the control module includes a phase-shifting control unit, which calculates the required phase adjustment amount based on the acquired phase angle. This generates a corresponding PWM drive signal with a phase shift. This PWM drive signal, amplified by the gate driver, controls the conduction timing of the field-effect transistor (FET). By precisely controlling the conduction phase of the FET during the AC cycle, the conduction timing of the FET is controlled within a fixed capacitor C. const Based on this, an adjustable capacitor C is generated. adj This enables continuous and precise adjustment of the capacitance value. If the control module determines that the phase angle at the input of the first resonant compensation component is less than or equal to the negative value of the first sub-threshold, the phase-shift control unit in the control module generates a phase-leading PWM drive signal, which controls the drive signal of the field-effect transistor relative to the coil current. A phase-leading signal effectively reduces the circuit capacitance, i.e., reduces the capacitance of the first adjustable capacitor. If the control module determines that the phase angle at the input of the first resonant compensation component is greater than or equal to the first sub-threshold, the phase-shift control unit in the control module generates a phase-lagging PWM drive signal, which controls the drive signal of the field-effect transistor relative to the coil current. Phase lag effectively increases the circuit capacitance, i.e., increases the capacitance of the first adjustable capacitor. If the control module determines that the phase angle at the output of the second resonant compensation component is greater than or equal to the second sub-threshold, the phase-shift control unit in the control module generates a phase-leading PWM drive signal, which controls the drive signal of the field-effect transistor relative to the coil current. A phase-leading signal effectively reduces the circuit capacitance, i.e., reduces the capacitance of the second adjustable capacitor. If the control module determines that the phase angle at the output of the second resonant compensation component is less than or equal to the negative value of the second sub-threshold, the phase-shift control unit in the control module generates a phase-lagging PWM drive signal, which controls the drive signal of the field-effect transistor relative to the coil current. Phase lag effectively increases the circuit capacitance, which means increasing the capacitance of the second adjustable capacitor.

[0101] In one embodiment, such as Figure 8 As shown, the control method also includes:

[0102] Step 800: When the absolute value of the phase angle is less than the first preset phase angle threshold, determine the mutual inductance of the magnetic coupling coil in the resonant compensation module.

[0103] If the control module compares the absolute value of the phase angle with a first preset phase angle threshold and determines that the absolute value of the phase angle is less than the first preset phase angle threshold, it indicates that the reduced transmission efficiency of the wireless power supply device is caused by a positional shift between the energy transmitting module and the energy receiving module in the wireless power supply device, i.e., a shift between the transmitting coil and the receiving coil in the magnetic coupling coil. In this case, the control module needs to adjust the position of the energy transmitting module. Before adjusting the position of the energy transmitting module, the control module first calculates the mutual inductance of the magnetic coupling coils (transmitting coil and receiving coil) in the resonant compensation module.

[0104] In an optional embodiment, the control module can acquire the voltage U at the output terminal (receiving coil) of the magnetically coupled coil and the current I at the input terminal (transmitting coil) of the magnetically coupled coil, and calculate the mutual inductance based on the voltage and current. The mutual inductance M can be expressed as... f is the operating frequency of the current.

[0105] Step 810: Adjust the position of the transmitting coil in the resonant compensation module according to the mutual inductance until the transmitting coil in the resonant compensation module reaches the target position.

[0106] After determining the mutual inductance of the magnetic coupling coils in the resonance compensation module, the control module adjusts the position of the transmitting coil in the resonance compensation module according to the mutual inductance until the transmitting coil in the resonance compensation module reaches the target position, that is, the relative displacement deviation between the transmitting coil and the receiving coil in the resonance compensation module is approximately zero.

[0107] In this embodiment, when the absolute value of the phase angle is less than the first preset phase angle threshold, the mutual inductance of the magnetic coupling coil in the resonance compensation module is determined; the position of the transmitting coil in the resonance compensation module is adjusted according to the mutual inductance until the transmitting coil reaches the target position; this can solve the problem of reduced transmission efficiency of the wireless power supply device caused by the positional offset between the transmitting coil and the receiving coil in the magnetic coupling coil of the wireless power supply device, thereby ensuring that the wireless power supply device can work normally, and thus making the wireless power supply device more practical.

[0108] In one embodiment, the energy emission module includes a capacitor array assembly, meaning that the capacitor array assembly is disposed on the housing of the energy emission module. Specifically, capacitors are disposed in all four directions of the housing of the energy emission module, forming the capacitor array assembly. That is, the capacitor array assembly includes capacitors C3, C4, C5, and C6. In this case, as... Figure 9As shown, this relates to an implementation method for adjusting the position of the transmitting coil in a resonant compensation module based on mutual inductance. The steps of this implementation method include:

[0109] Step 900: Determine the offset direction angle of the transmitting coil based on the capacitor array assembly.

[0110] The control module obtains the capacitance value of each capacitor in the capacitor array assembly to determine the offset direction of the transmitting coil in the resonance compensation module.

[0111] In an optional embodiment, the control module can calculate the offset direction angle of the transmitting coil in the resonance compensation module based on the capacitance changes of the four capacitors in the four directions of the capacitor array assembly, i.e., the four-way capacitance sensing vector. , .

[0112] Step 910: Determine the offset distance of the transmitting coil based on the mutual inductance and the preset mapping relationship; the preset mapping relationship refers to the correspondence between the mutual inductance and the offset distance.

[0113] The preset mapping relationship can be pre-established by the user through electromagnetic simulation and stored in the control module. The preset mapping relationship can convert mutual inductance transformation into offset distance transformation. After determining the mutual inductance of the magnetic coupling coil of the resonant compensation module, the control module looks up the corresponding offset distance in the preset mapping relationship and determines this offset distance as the offset distance of the transmitting coil in the resonant compensation module.

[0114] Step 920: Adjust the position of the transmitting coil according to the offset direction angle and offset distance.

[0115] After determining the offset direction angle and offset distance, the control module controls the transmitting coil in the resonant compensation module to move according to the offset direction angle and offset distance, so that the transmitting coil moves to the position opposite to the receiving coil, that is, so that there is no positional offset between the transmitting coil and the receiving coil.

[0116] In an optional embodiment, the control module includes a display screen. After obtaining the offset direction angle and offset distance, the control module can display these parameters on the display screen, allowing the user to move the resonant compensation module according to the displayed offset direction angle and offset distance. This enables the transmitting coil and receiving coil in the resonant compensation module to restore optimal coupling, and the user can confirm this on the display screen. The display screen can show a deviation graph corresponding to the offset direction angle and offset distance, along with a navigation interface with dynamic directional arrows.

[0117] In another alternative embodiment, after obtaining the offset direction angle and offset distance, the control module can automatically control the transmitting coil to move according to the offset direction angle and offset distance, so that the transmitting coil moves to a position relative to the receiving coil.

[0118] In this embodiment, the offset direction angle of the resonant compensation module is determined based on the capacitor array assembly; the offset distance of the transmitting coil is determined based on the mutual inductance and the preset mapping relationship; the preset mapping relationship refers to the correspondence between the mutual inductance and the offset distance; the position of the transmitting coil is adjusted based on the offset direction angle and the offset distance. This method of adjusting the position of the transmitting coil by determining the offset direction angle and the offset distance is quick and easy to implement, and can improve the practicality of the wireless power supply device.

[0119] Please see Figure 10 One embodiment of this application provides a control method for a wireless power supply device, the steps of which include:

[0120] Step 1001: Obtain the transmission efficiency of the wireless power supply device;

[0121] Step 1002: Determine whether the transmission efficiency is less than the preset efficiency threshold; if not, return to step 1001.

[0122] Step 1003: If the transmission efficiency is less than the preset efficiency threshold, obtain the phase angle of the energy receiving module;

[0123] Step 1004: Determine whether the absolute value of the phase angle is greater than or equal to the first preset phase angle threshold;

[0124] Step 1005: If the absolute value of the phase angle is greater than or equal to the first preset phase angle threshold, determine the third comparison result between the phase angle and the second sub-threshold.

[0125] Step 1006: If the third comparison result is that the phase angle is greater than or equal to the second sub-threshold, reduce the capacitance value of the second adjustable capacitor and proceed to step 1008.

[0126] Step 1007: If the third comparison result is a negative value of the phase angle less than or equal to the second sub-threshold, increase the capacitance value of the second adjustable capacitor and proceed to step 1008.

[0127] Step 1008: After a preset time period, determine whether the absolute value of the phase angle is less than the second preset phase angle threshold; if it is not less than, return to step 1006 or step 1007.

[0128] Step 1009: If the absolute value of the phase angle is greater than or equal to the second preset phase angle threshold, maintain the capacitance value of the second adjustable capacitor.

[0129] Step 1010: If the absolute value of the phase angle is less than the first preset phase angle threshold, determine the mutual inductance of the magnetic coupling coil in the resonant compensation module, and determine the offset distance of the transmitting coil according to the mutual inductance and the preset mapping relationship.

[0130] Step 1011: Determine the offset direction angle of the transmitting coil based on the capacitor array assembly;

[0131] Step 1012: Adjust the position of the transmitting coil according to the offset direction angle and offset distance;

[0132] Step 1013: Determine whether the transmitting coil has reached the target position; if the transmitting coil has reached the target position, return to step 1001; if the transmitting coil has not reached the target position, return to step 1010.

[0133] In the above embodiments, under the detuned mode of the wireless power supply device, a phase-shift controllable adjustable capacitor scheme can be adopted. Based on high-precision phase angle diagnosis, the phase difference between the driving signal and the coil current in the second adjustable capacitor is dynamically adjusted by the first control component. This allows for continuous and shock-free equivalent fine-tuning of the capacitance value of the second adjustable capacitor, thereby accurately pulling the offset resonant frequency back to the design value within 120ms. This not only achieves sub-picofarad level adjustment resolution but also fundamentally avoids the transient losses of traditional capacitor switching and the detuning contradiction on the energy transmission module side caused by frequency modulation measurement, rapidly and efficiently improving the energy transmission efficiency of the wireless power supply device. Furthermore, this embodiment generates a navigation interface based on the offset direction angle and offset distance, which can significantly reduce the operation time and cognitive burden of patient self-calibration. Through the closed-loop coordination of phase-shift capacitor adjustment and assisted navigation, the wireless power supply device can maintain sustainable and efficient energy transmission even in scenarios where the patient is free to move. When the wireless power supply device is applied to EEG signal monitoring, it can effectively ensure the continuity of long-term EEG monitoring and provide a new path for the mobile and precise localization of epileptic foci.

[0134] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0135] Please see Figure 1One embodiment of this application provides a wireless power supply device 10, including a control module 14, an energy transmitting module 11, an energy receiving module 13 and a resonance compensation module 12. The resonance compensation module 12 is connected between the energy transmitting module 11 and the energy receiving module 13, and the control module 14 is connected to the energy transmitting module 11, the energy receiving module 13 and the resonance compensation module 12.

[0136] The energy transmitting module 11 is used to transmit electrical energy provided by the power supply module to the energy receiving module through the resonant compensation module. The control module 14 is used to execute the steps of the control method of the wireless power supply device provided in the above embodiment.

[0137] The power supply module can be a battery assembly. The electrical energy provided by the power supply module is transmitted to the energy transmission module 11. The energy transmission module 11 transmits the energy to the energy receiving module 13 through the resonant compensation module.

[0138] The control module 14 in the wireless power supply device 10 provided in this application embodiment is used to execute the steps of the control method of the wireless power supply device described above. Therefore, the wireless power supply device 10 has all the beneficial effects of the control method described above, which will not be repeated here.

[0139] In one embodiment, such as Figure 1 As shown, the control module 14 includes a first control component 141 and a second control component 142, and the resonance compensation module 12 includes a first resonance compensation component 121, a magnetic coupling coil 125, and a second resonance compensation component 124.

[0140] The first control component 141 is communicatively connected to the second control component 142, the first resonant compensation component 121 is connected to the energy transmission module 11, the second resonant compensation component 124 is connected to the energy receiving module 13, the first control component 141 is connected to the first resonant compensation component 121 and the energy transmission module 11, and the second control component 142 is connected to the second resonant compensation component 124 and the energy receiving module 13.

[0141] The magnetic coupling coil 125 includes a transmitting coil 122 and a receiving coil 123. The output terminal of the first resonant compensation component 121 is connected to the transmitting coil 122, and the receiving coil 123 is connected to the input terminal of the second resonant compensation component 124.

[0142] The first control component 141 and the second control component 142 may be the same or different in type and structure. Both the first control component 141 and the second control component 142 may be microcontroller units (MCUs). Both the first control component 141 and the second control component 142 include a wireless communication module, and are wirelessly connected via this module. The acquisition of relevant data for the second resonant compensation component 124 and the energy receiving module 13 can be performed by the second control component 142 and transmitted to the first control component 141. The control method of the aforementioned wireless power supply device is executed by the first control component 141. For example, the voltage and current of the energy receiving module are acquired by the second control component 142 and transmitted to the first control component 141. The adjustment of the capacitance value of the second adjustable capacitor can be performed by the first control component 141 sending an adjustment command to the second control component 142, which then adjusts the capacitance according to the command.

[0143] The descriptions of the first resonant compensation component 121, the transmitting coil 122, the receiving coil 123, and the second resonant compensation component 124 can be found in the detailed descriptions of the above embodiments, and will not be repeated here.

[0144] Please see Figure 11 One embodiment of this application provides an electroencephalogram (EEG) signal monitoring system 20, including an external device 21 and an internal implantable device 22. The external device 21 includes a power supply module 211, a first control component 141 as in the wireless power supply device 10 provided in the above embodiment, an energy transmission module 11, a first resonance compensation component 121, and a transmitting coil 122 in the magnetic coupling coil 125. The internal implantable device 22 includes a second control component 142 as in the wireless power supply device 10 provided in the above embodiment, an energy receiving module 13, a second resonance compensation component 124, and a receiving coil 123 in the magnetic coupling coil.

[0145] The implanted device 22 does not have a power supply. Through the wireless power supply device, the external device 21 can supply power to the implanted device 22 through the power supply module 211 to ensure the normal operation of each component in the implanted device 22.

[0146] The EEG signal monitoring system 20 provided in this application embodiment uses the wireless power supply device 10 provided in the above embodiments to power the external device 21 to the implanted device 22, and has all the beneficial effects of the wireless power supply device 10 provided in the above embodiments, which will not be repeated here. Furthermore, using the wireless power supply device 10 ensures the normal operation of both the external device 21 and the implanted device 22, thereby enabling the EEG signal monitoring system 20 to evolve from bedside monitoring in hospitals to assessment during free movement at home, providing a more physiologically realistic EEG data basis for lesion localization, and thus improving the practicality and reliability of EEG signal monitoring.

[0147] In one embodiment, such as Figure 12 As shown, the implantable device 22 also includes an electrical stimulation component 221, an electrode lead 222, and an electrical signal acquisition component 223. The second control component 142 is connected to the electrical stimulation component 221 and the electrical signal acquisition component 223.

[0148] The second control component 142 is used to receive the electrical stimulation command sent by the first control component 141, and control the electrical stimulation component 221 to generate electrical pulse signals based on the electrical stimulation command. The second control component 142 is also used to acquire the electrical signals on the electrode wires 222 through the electrical signal acquisition component 223.

[0149] The second control component 142 can be connected via either wired or wireless communication with the electrical stimulation component 221 and the electrical signal acquisition component 223. The electrical stimulation component 221 can be an electrical stimulation controller. When electrical stimulation of the target area is required, the first control component 141 receives a user instruction and sends an electrical stimulation command to the second control component 142 based on the instruction. The second control component 142 controls the electrical stimulation component to generate an electrical pulse signal based on the received electrical stimulation command. Simultaneously, the first control component 141 sends a command to the second control component 142 to open the channel between the electrical stimulation component 221 and the electrode wire 222 at the target area, so as to perform electrical stimulation on the target area through the electrical pulse signal generated by the electrical stimulation component 221. The electrical pulse signal is an electrical pulse signal with a preset waveform, preset frequency, and preset pulse.

[0150] When it is necessary to collect electrical signals from the target area, the second control component 142 will open the switch between the electrode wire 222 and the electrical signal acquisition component 223 in the target area. The electrical signal acquisition component 223 can collect electrical signals on the electrode wire and transmit the electrical signals to the second control component 142. The second control component 142 can transmit the electrical signals to the first control component 141 for analysis and processing.

[0151] In this embodiment, the EEG signal monitoring system 20, through the first control component 141, the second control component 142, the electrical stimulation component 221, the electrode wire 222, and the electrical signal acquisition component 223, can realize electrical stimulation of the target area and also acquire the electrical signal of the target area, thereby improving the practicality of the EEG signal monitoring system 20.

[0152] In an optional embodiment, the EEG signal monitoring system further includes an EEG processing device, the EEG processing module being communicatively connected to the first control component and the second control component. The control link of the EEG signal monitoring system 20 is as follows: Figure 13 As shown. Figure 13 The lower part represents the external device, and the upper part represents the internal implanted device. The first control component, through a power device, can adjust the frequency to drive the inverter to output the required AC energy. This AC energy, after compensation by the first resonant compensation component, is transmitted to the internal implanted device via a magnetic coupling coil. Upon receiving the AC energy from the magnetic coupling coil, the internal implanted device undergoes compensation by the second resonant compensation component, followed by rectification by a rectifier to obtain the subsequent power supply. By acquiring the power of this subsequent power supply, the second control component can obtain the receiving-side power signal and transmit it to the first control component via both the internal and external wireless communication modules. The first control component determines the transmission efficiency based on the receiving-side power signal and the power setting (transmitting-side power signal). Based on the transmission efficiency determination and the phase angle acquired in the internal implanted device, the first control component can adjust the resonant compensation parameters of the internal implanted device using the aforementioned control method. The first control component can also acquire the capacitance value of the capacitor array component on the external casing, perform offset acquisition based on this capacitance value, and determine the offset direction angle. The first control component can also send an electrical stimulation command to the second control component, which then controls the electrical stimulation controller to generate electrical pulse stimulation according to the command. The second control component can also control the connection between the electrode wires and the electrical signal acquisition component to acquire electrical signals through the electrode wires and transmit the acquired electrical signals to the EEG processing device so that the EEG processing device can analyze and process the electrical signals.

[0153] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0154] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A control method of a wireless powered device, characterized by, The wireless power supply device includes an energy transmitting module and an energy receiving module, as well as a resonance compensation module connected between the energy transmitting module and the energy receiving module. The control method includes: The transmission efficiency of the wireless power supply device is obtained, and when the transmission efficiency is less than a preset efficiency threshold, the phase angle of the energy transmitting module or the energy receiving module is obtained. If the absolute value of the phase angle is greater than or equal to the first preset phase angle threshold, the parameters of the resonance compensation module are adjusted until a preset condition is met; the preset condition includes that the absolute value of the phase angle is less than the second preset phase angle threshold or the number of adjustments reaches a preset number threshold, and the first preset phase angle threshold is greater than the second preset phase angle threshold.

2. The control method according to claim 1, characterized by, After adjusting the parameters of the resonance compensation module, the control method further includes: After a preset time period, determine whether the preset conditions are met; If the preset conditions are not met, return to the step of adjusting the parameters of the resonance compensation module.

3. The control method according to claim 1, characterized by, The resonance compensation module includes a first resonance compensation component, which is connected to the energy emission module. The first resonance compensation component includes a first adjustable capacitor. The first preset phase threshold includes a first sub-threshold. Obtaining the phase angle of the energy emission module or the energy receiving module includes: Obtain the phase angle at the input terminal of the first resonant compensation component; When the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold, adjusting the parameters of the resonance compensation module includes: If the absolute value of the phase angle is greater than or equal to the first sub-threshold, a first comparison result is determined based on the phase angle and the first sub-threshold. If the first comparison result is that the phase angle is greater than or equal to the first sub-threshold, the capacitance value of the first adjustable capacitor is increased; If the first comparison result is a negative value of the phase angle that is less than or equal to the first sub-threshold, the capacitance value of the first adjustable capacitor is reduced.

4. The control method according to claim 1, characterized in that, The resonance compensation module includes a second resonance compensation component, which is connected to the energy receiving module. The second resonance compensation component includes a second adjustable capacitor. The first preset phase threshold includes a second sub-threshold. Obtaining the phase angle of the energy transmitting module or the energy receiving module includes: Obtain the phase angle at the output of the second resonant compensation component; When the absolute value of the phase angle is greater than or equal to a first preset phase angle threshold, adjusting the parameters of the resonance compensation module includes: If the absolute value of the phase angle is greater than or equal to the second sub-threshold, a second comparison result is determined based on the phase angle and the second sub-threshold. If the second comparison result is that the phase angle is greater than or equal to the second sub-threshold, the capacitance value of the second adjustable capacitor is reduced. If the second comparison result is a negative value of the phase angle that is less than or equal to the second sub-threshold, the capacitance value of the second adjustable capacitor is increased.

5. The control method according to any one of claims 1-4, characterized in that, The control method further includes: If the absolute value of the phase angle is less than the first preset phase angle threshold, the mutual inductance of the magnetic coupling coil in the resonant compensation module is determined. Adjust the position of the transmitting coil in the resonance compensation module according to the mutual inductance until the transmitting coil in the resonance compensation module reaches the target position.

6. The control method according to claim 5, characterized in that, The energy emission module includes a capacitor array assembly, and adjusting the position of the emission coil in the resonant compensation module according to the mutual inductance includes: The offset direction angle of the transmitting coil is determined based on the capacitor array assembly; The offset distance of the transmitting coil is determined based on the mutual inductance and the preset mapping relationship; the preset mapping relationship refers to the correspondence between the mutual inductance and the offset distance. The position of the transmitting coil is adjusted according to the offset direction angle and the offset distance.

7. A wireless power supply device, characterized in that, It includes a control module, an energy transmission module, an energy receiving module, and a resonance compensation module. The resonance compensation module is connected between the energy transmission module and the energy receiving module. The control module is connected to the energy transmission module, the energy receiving module, and the resonance compensation module. The energy transmitting module is used to transmit the electrical energy provided by the power supply module to the energy receiving module through the resonant compensation module; The control module is used to execute the control method according to any one of claims 1-6.

8. The wireless power supply device according to claim 7, characterized in that, The control module includes a first control component and a second control component, and the resonance compensation module includes a first resonance compensation component, a magnetic coupling coil, and a second resonance compensation component. The first control component is communicatively connected to the second control component, the first resonant compensation component is connected to the energy transmitting module, the second resonant compensation component is connected to the energy receiving module, the first control component is connected to both the first resonant compensation component and the energy transmitting module, and the second control component is connected to both the second resonant compensation component and the energy receiving module.

9. A brainwave signal monitoring system, characterized in that, The device includes an external device and an internal implantable device. The external device includes a power supply module, a first control component, an energy transmission module, a first resonant compensation component, and a transmitting coil in a magnetic coupling coil, as described in claim 8. The internal implantable device includes a second control component, an energy receiving module, a second resonant compensation component, and a receiving coil in a magnetic coupling coil, as described in claim 8.

10. The system according to claim 9, characterized in that, The implantable device further includes an electrical stimulation component, electrode leads, and an electrical signal acquisition component, and the second control component is connected to the electrical stimulation component and the electrical signal acquisition component. The second control component is used to receive an electrical stimulation command sent by the first control component, and control the electrical stimulation component to generate an electrical pulse signal based on the electrical stimulation command; The second control component is also used to acquire electrical signals on the electrode wires through the electrical signal acquisition component.

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