Adaptive antenna system, medical device, method, electronic device, and medium

Abstract

The application provides an adaptive antenna system, a medical device, a method, an electronic device and a medium. The adaptive antenna system comprises a coupling circuit, a control module, an antenna matching matrix and an antenna module which are electrically connected; the coupling circuit is configured to collect real-time signal strength of the antenna module and send the real-time signal strength to the control module; the control module is configured to judge whether frequency deviation occurs in the antenna module according to the real-time signal strength and target signal strength; if yes, the control module is further configured to adjust working frequency point of itself according to a first preset rule and / or perform antenna matching adjustment on the antenna matching matrix according to a second preset rule, so that the antenna module works at a correct frequency point. The application can improve signal receiving and transmitting sensitivity of the implantable medical device, maintain high communication quality and reduce power consumption of the implantable medical device.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an adaptive adjustment antenna system, medical device, method, electronic device, and medium. Background Technology

[0002] Implantable medical devices are among the most effective treatments for cardiovascular and cerebrovascular diseases, orthopedic conditions, and other ailments. In particular, their ability to provide real-time biological data from within the body via telemetry technology has led to their increasingly widespread application in recent years. However, besides communication protocols and low-power circuit design, battery consumption significantly impacts the performance of implantable medical devices. Antenna performance is a crucial factor to consider when implementing a link between implantable active medical devices and external medical control equipment. Since the antenna performance of implantable medical devices is highly susceptible to factors such as human muscle tissue, temperature, and errors in radio frequency devices, it has always been a key technology of great interest to those skilled in the art.

[0003] Research has found that when the center frequency of an antenna shifts, it not only increases transmission power, power consumption, and reception sensitivity, but also affects communication quality. Currently, most electronic products with antennas rely on manual adjustment via external programmable devices to ensure they operate at the correct frequency. However, manually adjusting the antenna for implantable medical devices requires minimally invasive surgery, which is not only wasteful of medical resources and imposes unnecessary economic and psychological burdens on patients, but is also inefficient.

[0004] Therefore, how to provide an antenna system for implantable medical devices that enables the implantable medical devices to maintain high-quality communication and reduce power consumption has become an increasingly pressing technical problem for those skilled in the art.

[0005] It should be noted that the information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to address the problem in existing technologies where implantable medical devices cannot detect frequency deviations in antennas in a timely manner and where adjustment is inconvenient when frequency deviations occur. This invention provides an adaptive antenna adjustment system, medical device, method, electronic device, and medium. This invention can automatically and promptly detect whether the antenna module has a frequency deviation without minimally invasive surgery, and when a frequency deviation occurs, it can ensure that the antenna module operates at the correct frequency. This improves the sensitivity of the implantable medical device in transmitting and receiving signals, maintains high communication quality, and reduces the power consumption of the implantable medical device, thereby saving medical resources, manpower, and economic costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an adaptive adjustment antenna system for implantable medical devices, comprising: an electrically connected coupling circuit, a control module, an antenna matching matrix, and an antenna module;

[0008] The coupling circuit is configured to acquire the real-time signal strength of the antenna module and send the real-time signal strength to the control module;

[0009] The control module is configured to determine whether the antenna module has a frequency offset based on the real-time signal strength and the target signal strength. If so, the control module is further configured to adjust its own operating frequency according to a first preset rule and / or adjust the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency.

[0010] Optionally, the control module includes a main chip and an RF front-end circuit, the main chip is connected to the antenna matching matrix through the RF front-end circuit, and the coupling circuit is connected to the main chip;

[0011] The control module is further configured to adjust its own operating frequency according to a first preset rule so that the antenna module operates at the correct frequency, including:

[0012] The main chip is used to adjust the operating frequency of the radio frequency front-end circuit according to a first preset rule so that the antenna module operates at the correct frequency.

[0013] Optionally, the antenna matching matrix includes at least one antenna matching element;

[0014] When the number of antenna matching units is equal to or greater than two, each antenna matching unit is connected in series with its corresponding switch to form an antenna matching branch, and each antenna matching branch is connected in parallel to form the antenna matching matrix.

[0015] Each antenna matching unit includes an inductor and a capacitor, wherein the equivalent inductance of the inductor and / or the equivalent capacitance of the capacitor are adjustable; one end of each inductor is connected to the control module via the switch; the other end of each inductor and one end of the corresponding capacitor are connected together and then connected to the antenna module, and the other end of each capacitor is grounded; the control module is further configured to adjust the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency, including:

[0016] When the antenna matching matrix includes one antenna matching unit, the control module is used to adjust the equivalent inductance value of the inductor and / or the equivalent capacitance value of the capacitor according to the second preset rule, so that the antenna module operates at the correct frequency.

[0017] When the antenna matching matrix includes two or more antenna matching units, the control module is used to control the switch of each antenna matching unit to be turned on or off, and to adjust the equivalent inductance value of the inductor and / or the equivalent capacitance value of the capacitor of each antenna matching unit according to the second preset rule, so that the antenna module works at the correct frequency.

[0018] Optionally, the inductor includes a digitally controlled variable inductor, and / or the capacitor includes a digitally controlled variable capacitor.

[0019] Optionally, the control module is used to adjust the equivalent inductance value of the inductor, including: adjusting the voltage applied to the terminals of the inductor to change the inductance value of the inductor;

[0020] And / or the control module is used to adjust the equivalent capacitance value of the capacitor, including: adjusting the voltage applied to the terminals of the capacitor to change the electrostatic capacitance value of the capacitor.

[0021] Optionally, the control module is configured to determine whether the antenna module has a frequency offset based on the real-time signal strength and the target signal strength, including:

[0022] When the implantable medical device sends a signal to the external programmable device, the target signal strength is obtained based on the transmission power of the implantable medical device, the gain of the antenna module, the path loss of the signal, and the circuit preset error.

[0023] If the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the first error threshold, then the antenna module exhibits frequency deviation; otherwise, the antenna module operates at a preset frequency.

[0024] When the implantable medical device receives a signal from the external programmable device, it obtains the target signal strength based on the received signal strength information, signal path loss, and circuit preset error.

[0025] If the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second error threshold, then the antenna module exhibits frequency deviation; otherwise, the antenna module operates at a preset frequency.

[0026] Optionally, when the control module determines that the antenna module has a frequency offset, the control module is further configured to:

[0027] If the absolute value of the difference between the real-time signal strength and the target signal strength is less than a first adjustment threshold, the control module adjusts its own operating frequency according to a first preset rule; otherwise, the control module adjusts the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency.

[0028] Optionally, the control module is further configured to adjust its own operating frequency according to a first preset rule, including:

[0029] Centered on the current operating frequency of the implantable medical device, the operating frequency of the control module is gradually adjusted to the left and / or right according to the first adjustment step size until any of the following conditions are met:

[0030] Condition 1: The adjusted operating frequency ensures that the antenna module operates at the correct frequency.

[0031] Condition 2: The working frequency point after adjustment to the left is less than the lowest frequency of the working bandwidth of the implantable medical device, and the working frequency point after adjustment to the right is greater than the highest frequency of the working bandwidth of the implantable medical device, but the antenna module still does not work at the correct frequency point.

[0032] Wherein, the first adjustment step size is an integer multiple of the communication channel.

[0033] Optionally, the method further includes: when adjusting the operating frequency of the control module according to the first preset rule still fails to make the antenna module work at the correct frequency, the control module is further configured to take the most matching operating frequency as the current operating frequency corresponding to the strongest real-time signal strength collected by the coupling circuit, and adjust the antenna matching matrix according to the second preset rule so that the antenna module works at the correct frequency; wherein, the most matching operating frequency is the operating frequency corresponding to the strongest real-time signal strength collected by the coupling circuit during the adjustment of the operating frequency of the control module.

[0034] Optionally, the control module is further configured to adjust the antenna matching matrix according to a second preset rule, including:

[0035] The control module is further configured to use the second adjustment step size as the adjustment step size for switching the resonant frequency of the antenna module; and to determine whether the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second adjustment threshold. If so, the third adjustment step size is used as the adjustment step size for switching the resonant frequency of the antenna module, wherein the third adjustment step size is N times the second adjustment step size, and N is an integer greater than 1.

[0036] The control module is configured to adjust the inductance value of the equivalent inductance of the antenna matching matrix, the capacitance value of the equivalent capacitance of the antenna matching matrix, and / or the switching of the antenna matching matrix, so that the antenna module gradually switches the resonant frequency of the antenna module with the current center frequency as the center, and simultaneously to the left and right with the adjustment step size of the resonant frequency, until the antenna module operates at the correct frequency.

[0037] To achieve the above objectives, the present invention also provides an implantable medical device comprising the adaptive adjustment antenna system described in any of the preceding claims.

[0038] To achieve the above objectives, the present invention also provides a control method for an adaptive antenna system, the adaptive antenna system comprising an electrically connected coupling circuit, a control module, an antenna matching matrix, and an antenna module; the control method includes:

[0039] The real-time signal strength of the antenna module is collected and sent to the control module.

[0040] Based on the real-time signal strength and the target signal strength, it is determined whether the antenna module has a frequency offset. If so, the operating frequency point is adjusted according to the first preset rule and / or the antenna matching matrix is ​​adjusted according to the second preset rule so that the antenna module operates at the correct frequency point.

[0041] To achieve the above objectives, the present invention also provides an electronic device, which includes a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the above-described control method for the adaptive adjustment antenna system is implemented.

[0042] To achieve the above objectives, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described control method for an adaptive adjustment antenna system.

[0043] Compared with the prior art, the adaptive adjustment antenna system, medical device, method, electronic device, and medium provided by the present invention have the following beneficial effects:

[0044] This invention provides an adaptive adjustment antenna system for implantable medical devices, comprising: an electrically connected coupling circuit, a control module, an antenna matching matrix, and an antenna module; the coupling circuit is configured to acquire the real-time signal strength of the antenna module and send the real-time signal strength to the control module; the control module is configured to determine whether the antenna module has a frequency offset based on the real-time signal strength and the target signal strength; if so, the control module is further configured to adjust its own operating frequency according to a first preset rule and / or adjust the antenna matching matrix according to a second preset rule, so that the antenna module operates at the correct frequency. Therefore, the adaptive adjustment antenna system provided by this invention can automatically and promptly detect whether the antenna module has a frequency offset without minimally invasive surgical intervention, and when the antenna module has a frequency offset, it can automatically adjust the operating frequency of the adaptive adjustment antenna system and / or adjust the antenna matching matrix to ensure that the antenna module operates at the correct frequency, thereby improving the sensitivity of the implantable medical device in transmitting and receiving signals, maintaining high communication quality, and reducing the power consumption of the implantable medical device, thus saving medical resources, manpower, and economic costs.

[0045] Since the implantable medical device, the control method for the adaptive adjustment antenna system, the electronic device and the computer-readable storage medium provided by this invention belong to the same inventive concept as the adaptive adjustment antenna system provided by this invention, they have at least the same beneficial effects. To avoid redundancy, they will not be described in detail here. Attached Figure Description

[0046] Figure 1 This is a schematic diagram showing the frequency offset of the antenna standing wave.

[0047] Figure 2 This is a schematic diagram of the structure of an adaptive adjustment antenna system provided in one embodiment of the present invention;

[0048] Figure 3 A schematic diagram of the equivalent circuit structure of an antenna matching matrix provided in one embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the structure of an antenna matching unit provided in one embodiment of the present invention;

[0050] Figure 5 This is a schematic diagram of the antenna matching matrix structure in the prior art;

[0051] Figure 6This is a schematic diagram of frequency adjustment within the operating bandwidth provided by one embodiment of the present invention;

[0052] Figure 7 A flowchart illustrating a control method for an adaptive adjustment antenna system according to an embodiment of the present invention;

[0053] Figure 8 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention;

[0054] The reference numerals in the attached figures are explained as follows:

[0055] 100-Coupled circuit, 200-Control module, 210-Main chip, 220-RF front-end circuit, 300-Antenna matching matrix, 310-Antenna matching unit, 311-Switch, 400-Antenna module;

[0056] 510 - Processor, 520 - Memory, 530 - Communication interface, 540 - Communication bus;

[0057] LeqN, L1, L2, LN - Inductors; CeqN, C1, C2, CN - Capacitors. Detailed Implementation

[0058] To make the objectives, advantages, and features of the present invention clearer, the adaptive adjustment antenna system, medical device, method, electronic device, and medium proposed by the present invention are further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise scales, used only to facilitate and clarify the illustration of the embodiments of the present invention. It should be understood that the drawings do not necessarily show the specific structure of the invention to scale, and the illustrative features used to illustrate certain principles of the invention in the drawings are also drawn in a slightly simplified manner. Specific design features of the present invention disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and environment in which they are used. Furthermore, in the embodiments described below, the same reference numerals are sometimes used across different drawings to denote the same parts or parts having the same function, and their repeated descriptions are omitted. In this specification, similar reference numerals and letters are used to denote similar items; therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0059] Where appropriate, these terms may be replaced. Similarly, if the methods described herein comprise a series of steps, and the order of these steps presented herein is not necessarily the only possible order in which these steps can be performed, and some of the described steps may be omitted and / or some other steps not described herein may be added to the method.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] The core idea of ​​this invention is to provide an adaptive adjustment antenna system, medical device, method, electronic device, and medium. This invention can automatically and promptly detect whether the antenna module has a frequency offset without minimally invasive surgery, and when the antenna module has a frequency offset, it can make the antenna module work at the correct frequency point, thereby improving the sensitivity of the implantable medical device in transmitting and receiving signals, maintaining high communication quality, and reducing the power consumption of the implantable medical device, thereby saving medical resources, manpower, and economic costs.

[0062] To realize the above ideas, the inventors of this invention, through extensive research and continuous in-depth practice, discovered that: when implantable active medical devices (unless otherwise specified, "implantable medical device" in this context refers to implantable active medical devices) are implanted into different human bodies, the tissue size varies among individuals, or the surrounding tissues change over time after implantation. This causes changes in the environment around the antenna, resulting in a shift in the antenna's resonant frequency, i.e., a change in the antenna's operating frequency, thus degrading the antenna's performance. For details, please refer to... Figure 1 It schematically illustrates a diagram showing the frequency offset of an antenna standing wave in one embodiment. Figure 1 In the diagram, position ① represents the desired antenna operating frequency, while positions ② and ③ indicate a shift in the antenna's operating frequency due to changes in the surrounding environment. As mentioned earlier, frequency shift not only increases transmit power, power consumption, and receiver sensitivity, but also affects communication quality.

[0063] Further research by the inventors revealed that the common practice in existing technologies to determine whether an antenna is experiencing frequency deviation is to measure its reflection coefficient. However, for implantable active medical devices, the device size is small, while the antenna reflection coefficient measurement circuit is relatively complex and difficult to miniaturize, making it unsuitable for direct application. Through repeated investigation, research, and practice, the inventors creatively proposed a method to acquire the antenna's signal strength via a coupling circuit. The method then uses the acquired signal strength to determine if the antenna is experiencing frequency deviation. When frequency deviation is detected, a switching circuit is used to switch the antenna to the correct frequency.

[0064] Based on the above research, the adaptive adjustment antenna system, medical device, method, electronic device and medium provided by the present invention will be described by way of example below.

[0065] This embodiment provides an adaptive antenna adjustment system. Please refer to [link / reference]. Figure 2 The diagram illustrates the structure of the adaptive adjustment antenna system provided in this embodiment. Figure 2 As can be seen, the adaptive adjustment antenna system provided in this embodiment includes: an electrically connected coupling circuit 100, a control module 200, an antenna matching matrix 300, and an antenna module 400.

[0066] Specifically, the coupling circuit 100 is configured to acquire the real-time signal strength of the antenna module 400 and send the real-time signal strength to the control module 200; the control module 200 is configured to determine whether the antenna module 400 has a frequency offset based on the real-time signal strength and the target signal strength. If so, the control module 200 is further configured to adjust its own operating frequency according to a first preset rule and / or adjust the antenna matching matrix 300 according to a second preset rule so that the antenna module 400 operates at the correct frequency.

[0067] With this configuration, the adaptive adjustment antenna system provided in this embodiment can adjust the control module 200 and / or switch the antenna module 400 of the adaptive antenna system. It can automatically and promptly detect whether the antenna module 400 has a frequency offset without minimally invasive surgical intervention. When the antenna module 400 has a frequency offset, it can automatically adjust the control module 200 and / or the antenna module 400 of the adaptive adjustment antenna system so that the antenna module 400 operates at the correct frequency. This improves the sensitivity of the implantable medical device in transmitting and receiving signals, maintains high communication quality, and reduces the power consumption of the implantable medical device, thereby saving medical resources, manpower, and economic costs.

[0068] Specifically, in one preferred embodiment, the electrical connection between the coupling circuit 100, the control module 200, the antenna matching matrix 300, and the antenna module 400 includes: the input terminal of the coupling circuit 100 is connected to one end of the antenna module 400; the output terminal of the coupling circuit 100 is connected to one end of the control module 200; the other end of the control module 200 is connected to one end of the antenna matching matrix 300; and the other end of the antenna matching matrix 300 is connected to the other end of the antenna module 400.

[0069] Preferably, in one exemplary embodiment, the control module 200 includes a main chip 210 and an RF front-end circuit 220, the main chip 210 being connected to the antenna matching matrix 300 through the RF front-end circuit 220, and the coupling circuit 100 being connected to the main chip 210.

[0070] Accordingly, the control module 200 is also used to adjust its own operating frequency according to the first preset rule so that the antenna module 400 operates at the correct frequency, including: the main chip 210 is used to adjust the operating frequency of the radio frequency front-end circuit 220 according to the first preset rule so that the antenna module 400 operates at the correct frequency.

[0071] It should be specifically noted that the main chip 210 includes a microprocessor and a computer program capable of running on the microprocessor. As those skilled in the art will understand, this invention does not limit the specific architecture of the microprocessor, including but not limited to ARM, MIPS, PowerPC, X86, and SH. Furthermore, for the working principle and components of the RF front-end circuit 220, please refer to the prior art; this invention does not impose any limitations in this regard and will not elaborate further here.

[0072] Please continue reading Figure 2 Preferably, the antenna matching matrix 300 includes at least one antenna matching unit 310. More specifically, when the number of antenna matching units 310 is equal to or greater than two, each antenna matching unit 310 is connected in series with its corresponding switch 311 to form an antenna matching branch (not shown in the figure), and the antenna matching branches are connected in parallel to form the antenna matching matrix 300.

[0073] For more details, please see Figure 3 and Figure 4 ,in, Figure 3 A schematic diagram of the equivalent circuit structure of the antenna matching matrix provided in this embodiment is given. Figure 4 This is a schematic diagram of the structure of an antenna matching unit provided in one embodiment of the present invention. From... Figure 3 and Figure 4 It can be seen that each of the antenna matching units 310 includes an inductor LeqN and a capacitor CeqN, and the equivalent inductance value of the inductor LeqN and / or the equivalent capacitance value of the capacitor CeqN are adjustable.

[0074] Additionally, it should be noted that the accompanying drawings are for easier understanding. Figure 4 The following explanation uses only the example of a variable capacitor, CeqN.

[0075] Specifically, when there is one antenna matching unit 310, one end of the inductor LeqN is directly connected to the control module 200. When there are two or more antenna matching units 310, one end of the inductor LeqN is connected to the control module 200 through the switch 311. The other end of the inductor LeqN is connected to the antenna module 400 after sharing one end of the capacitor CeqN, and the other end of the capacitor CeqN is grounded.

[0076] Accordingly, the control module 200 is further configured to adjust the antenna matching matrix 300 according to a second preset rule so that the antenna module 400 operates at the correct frequency, including:

[0077] When the antenna matching matrix 300 includes an antenna matching unit 310, the control module 200 is used to adjust the equivalent inductance value of the inductor LeqN and / or the equivalent capacitance value of the capacitor CeqN according to the second preset rule, so that the antenna module 400 operates at the correct frequency.

[0078] When the antenna matching matrix 300 includes two or more antenna matching units 310, the control module 200 is used to control the switch 311 of each antenna matching unit 310 to open or close, and to adjust the equivalent inductance value of the inductor LeqN and / or the equivalent capacitance value of the capacitor CeqN of each antenna matching unit 310 according to the second preset rule, so that the antenna module 400 operates at the correct frequency.

[0079] Therefore, the antenna matching matrix 300 of the adaptive adjustment antenna system provided by the present invention, when having one antenna matching unit 310, allows the equivalent inductance value of the inductor LeqN and / or the equivalent capacitance value of the capacitor CeqN to be adjustable. When having two or more antenna matching units 310, the antenna matching units 310 can be freely combined, thereby laying a solid foundation for the resonant frequency of the antenna module 400 to cover the entire communication frequency band.

[0080] It should be specifically noted that, as those skilled in the art will understand, the number of antenna matching units 310 in the antenna matching matrix 300 should be reasonably selected according to actual needs, and the present invention does not impose any restrictions on this. Furthermore, the present invention does not limit the specific form of the switch 311. In one embodiment, the switch 311 of each antenna matching unit 310 can also be integrated into a single single-throw or single-throw switch to switch the antenna matching unit. Additionally, when there are multiple antenna matching units 310, the multiple antenna matching units 310 can be the same or different, and the present invention does not impose any restrictions on this.

[0081] Preferably, in one exemplary embodiment, the inductor LeqN comprises a numerically controlled variable inductor, and / or the capacitor CeqN comprises a numerically controlled variable capacitor.

[0082] For a better understanding of this invention, please refer to [link / reference]. Figure 5 It schematically illustrates the antenna matching matrix structure in the prior art. From Figure 5 It can be seen that the antenna matching units of a traditional antenna matching matrix include inductors L1, L2...Ln and capacitors C1, C2...Cn. The inductors L1, L2...Ln of each antenna matching unit are not adjustable. Moreover, the existing technology simply stacks the antenna matching units directly. This simple stacking of antenna matching units will result in the antenna matching occupying too much space, leading to an increase in the size of the implantable medical device, which is not suitable for implantable medical devices.

[0083] Therefore, the adaptive adjustment antenna system provided in this embodiment utilizes a digitally controlled variable capacitor CeqN with semiconductor properties. Since the digitally controlled variable capacitor CeqN has more linear adjustability than a varactor diode, the capacitance value can be changed by applying voltage to the terminals, which can achieve a change of approximately 50% in capacitance. This allows only one antenna matching matrix to be used to achieve multiple resonant frequencies by controlling the voltage, reducing the number of antenna matching units 310 and thus significantly reducing the size of the implantable medical device.

[0084] Preferably, please continue to see Figure 4 ,from Figure 4 As can be seen, the control module 200 is used to adjust the equivalent capacitance value of the capacitor CeqN, including: adjusting the voltage applied to the terminals of the capacitor CeqN to change the electrostatic capacitance value of the capacitor CeqN.

[0085] Furthermore, in other embodiments, the control module 200 is used to adjust the equivalent inductance value of the inductor LeqN, including: adjusting the voltage applied to the terminals of the inductor LeqN to change the inductance value of the inductor. It should be specifically noted that, as those skilled in the art will understand, the present invention does not limit the specific implementation method of changing the inductance value of the inductor LeqN. For example, the inductance value of the inductor LeqN can be changed by altering the voltage across a power device (not shown in the figure) connected to the inductor LeqN, thereby changing the inductance value of the inductor LeqN through the power device.

[0086] Therefore, the adaptive adjustment antenna system provided in this embodiment utilizes a digitally controlled variable capacitor CeqN with semiconductor properties. Since the digitally controlled variable capacitor CeqN has more linear adjustability than a varactor diode, the adaptive adjustment antenna system provided by this invention changes the capacitance value by applying voltage to the terminals. This not only makes the control simple and easy to implement, but also provides important technical support for realizing the automatic adjustment of the adaptive adjustment antenna system.

[0087] Preferably, in one exemplary embodiment, the control module 200 is configured to determine whether the antenna module 400 has a frequency offset based on the real-time signal strength and the target signal strength, including:

[0088] When the implantable medical device sends a signal to the external programmable device (not shown in the figure), the target signal strength is obtained based on the transmission power of the implantable medical device, the gain of the antenna module, the path loss of the signal, and the preset error of the circuit.

[0089] If the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the first error threshold, then the antenna module exhibits frequency deviation; otherwise, the antenna module operates at a preset frequency.

[0090] When the implantable medical device receives a signal from the external programmable device, it obtains the target signal strength based on the received signal strength information, signal path loss, and circuit preset error.

[0091] If the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second error threshold, then the antenna module exhibits frequency deviation; otherwise, the antenna module operates at a preset frequency.

[0092] Specifically, for the signal emitted from the implantable medical device to the external programmable device, the transmission power of the implantable medical device, the gain of the antenna module 400, and the path loss of the signal are all relatively fixed values. Therefore, when the antenna module 400 does not exhibit frequency offset, the real-time signal strength acquired by the coupling circuit 100 should be the theoretical target signal strength, which is also a relatively fixed value, as shown in the following formula:

[0093]

[0094] In the above formula, The target signal strength, The transmission power of the implantable medical device. The gain of the antenna module 400, The path loss of the signal. An error is preset for the circuit (i.e., the inherent error range of the circuit itself). Therefore, the real-time signal strength acquired by the coupling circuit 100 should be within the target signal strength range. and Between, among them, This is the first error threshold (i.e., the allowable error factor). Therefore, if the real-time signal strength acquired by the coupling circuit 100 is not within this range, it is determined that the antenna module 400 has a frequency offset, and the adaptive adjustment function of the adaptive antenna system should be activated to adjust it so that the antenna module 400 operates at the correct frequency.

[0095] Similarly, for the signal received by the implantable medical device from the external programming device, since the signal path loss and circuit preset error are relatively fixed values, and the external programming device broadcasts the signal strength information in the broadcast information before establishing a wireless connection with the implantable medical device, the real-time signal strength collected by the coupling circuit 100 should be the theoretical target signal strength when the antenna module 400 does not exhibit frequency offset. That is, there is a quantitative relationship between the target signal strength and the real-time signal strength collected by the coupling circuit 100, as shown in the following formula:

[0096]

[0097] In the above formula, The target signal strength (i.e. the theoretically received signal strength) is calculated by the main chip 210 based on the broadcast from the external programmable device. The signal strength information acquired by the coupling circuit 100 The path loss of the signal. An error is preset for the circuit (i.e., the inherent error range of the circuit itself). Therefore, the real-time signal strength acquired by the coupling circuit 100 should be within the target signal strength range. 2 and Between, among them, This is the second error threshold (i.e., the allowable error factor). Therefore, if the real-time signal strength acquired by the coupling circuit 100 is not within this range, it is determined that the antenna module 400 has a frequency offset, and the adaptive adjustment function of the adaptive antenna system should be activated to adjust it so that the antenna module 400 operates at the correct frequency.

[0098] It should be noted that the present invention does not limit the specific values ​​of the first error threshold and the second error threshold. The first error threshold may be the same as or different from the second error threshold. In practical applications, it should be set reasonably according to the actual situation.

[0099] Preferably, in one exemplary embodiment, when the control module 200 determines that the antenna module has a frequency offset, the control module 200 is further configured to:

[0100] If the absolute value of the difference between the real-time signal strength and the target signal strength is less than a first adjustment threshold, the control module 200 adjusts its own (i.e., the RF front-end circuit 220) operating frequency according to a first preset rule; otherwise, the control module 200 adjusts the antenna matching matrix 300 according to a second preset rule so that the antenna module 400 operates at the correct frequency.

[0101] Therefore, the adaptive adjustment antenna system provided by the present invention can adopt different adjustment strategies according to the frequency deviation of the antenna module 400, thereby enabling the antenna module 400 to work at the correct frequency more efficiently.

[0102] Specifically, in one preferred embodiment, the control module 200 is further configured to adjust its own (i.e., the RF front-end circuit 220) operating frequency according to a first preset rule, including:

[0103] Centered on the current operating frequency of the implantable medical device, the operating frequency of the control module 200 is gradually adjusted to the left and / or right according to the first adjustment step size until any of the following conditions are met:

[0104] Condition 1: The adjusted operating frequency ensures that the antenna module 400 operates at the correct frequency.

[0105] Condition 2: The working frequency point after adjustment to the left is less than the lowest frequency of the working bandwidth of the implantable medical device, and the working frequency point after adjustment to the right is greater than the highest frequency of the working bandwidth of the implantable medical device, but the antenna module 400 still does not work at the correct frequency point.

[0106] Wherein, the first adjustment step size is an integer multiple of the communication channel.

[0107] Specifically, please see Figure 6The diagram illustrates frequency adjustment within the operating bandwidth according to an embodiment of the present invention. Specifically, when a frequency offset is detected in the antenna module 400, since the wireless communication of the implantable medical device operates within a certain frequency range of communication bandwidth, the operating frequency point of the antenna module 400 can be adjusted in conjunction with the antenna matching matrix 300 within the operating bandwidth. If a satisfactory operating frequency point is found within the operating bandwidth, the current operating frequency point of the RF front-end circuit 220 is adjusted to ensure that the antenna module 400 operates at the correct frequency point. For example, the adaptive adjustment antenna system operates within the operating bandwidth range F0 to F1, and the interval between adjacent communication channels is ∆F. The current operating frequency point is F01. If a frequency offset is detected in the antenna module 400 at this time, the frequency offset is adjusted by ∆F. △F、……、M Adjust △F gradually left and right until either condition one or condition two is met. For example... Figure 6 As shown, M is an integer equal to or greater than 1. For example, when the current operating frequency is adjusted from F01 to F03, the antenna module 400 operates at the correct frequency. In this case, F03 is taken as the adjusted current operating frequency, and there is no need to use the antenna matching matrix 300 for further antenna matching adjustment.

[0108] It should be noted that the above-described method of gradually adjusting around the current operating frequency is only a description of a preferred embodiment and not a limitation of the present invention. In other embodiments, the current operating frequency of the RF front-end circuit 220 can also be deduced from the correct operating frequency and frequency offset of the antenna module 400 before calibration, thereby significantly saving the adjustment time of the antenna module 400 and further improving the efficiency of frequency offset adjustment.

[0109] Preferably, in one exemplary embodiment, if the antenna module 400 still fails to operate at the correct frequency after adjusting the operating frequency of the RF front-end circuit 220 according to the first preset rule, the control module 200 is further configured to take the most matching operating frequency as the current operating frequency and adjust the antenna matching matrix 300 according to the second preset rule to ensure that the antenna module 400 operates at the correct frequency. The most matching operating frequency is the operating frequency corresponding to the strongest real-time signal strength acquired by the coupling circuit 100 during the adjustment of the operating frequency of the RF front-end circuit 220.

[0110] Combined with appendix Figure 6If the current operating frequency cannot make the antenna module 400 work at the correct frequency (i.e., there is still a frequency offset) within the entire operating frequency range from F0 to F1, then the frequency point with the strongest signal collected by the coupling circuit 100 is locked (for example, the most matching operating frequency point when the current operating frequency point is at frequency point F03), and on this basis, the matching adjustment of the antenna module 400 is further performed through the antenna matching matrix 300.

[0111] According to the resonance formula of the antenna matching matrix 300 and Figure 4 It can be seen that the resonant frequency of the antenna module 400 can be adjusted by changing the equivalent inductance and equivalent capacitance values ​​of the antenna matching matrix 300.

[0112] The resonance formula is as follows:

[0113]

[0114] In the above formula, The resonant frequency of the antenna matching matrix is... It is the equivalent inductance value of the antenna matching matrix 300. It is the equivalent capacitance value of the antenna matching matrix 300.

[0115] Preferably, in one exemplary embodiment, the control module 200 is further configured to adjust the antenna matching matrix 300 according to a second preset rule, including:

[0116] The control module 200 is further configured to use the second adjustment step size as the adjustment step size for switching the resonant frequency of the antenna module 400; and to determine whether the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second adjustment threshold. If so, the third adjustment step size is used as the adjustment step size for switching the resonant frequency of the antenna module 400, wherein the third adjustment step size is N times the second adjustment step size, and N is an integer greater than 1.

[0117] The control module 200 is configured to adjust the inductance value of the equivalent inductance of the antenna matching matrix 300, the capacitance value of the equivalent capacitance of the antenna matching matrix 300, and / or the switch 311 of the antenna matching matrix 300, so that the antenna module 400 gradually switches the resonant frequency of the antenna module 400 with the current center frequency as the center, and simultaneously to the left and right with the adjustment step size of the resonant frequency, until the antenna module operates at the correct frequency.

[0118] Specifically, in one preferred embodiment, if the offset of the real-time signal strength acquired by the coupling circuit 100 is small (e.g., less than the second adjustment threshold; as those skilled in the art will understand, the second adjustment threshold is greater than the first adjustment threshold, and the first adjustment threshold is greater than the first error threshold and the second error threshold), then the frequency adjustment of the antenna matching matrix 300 is at an interval equal to one communication channel interval. Starting from this point, by adjusting the control voltage of the numerically controlled variable inductor LeqN and / or the numerically controlled variable capacitor CeqN and the switch 311, the center frequency points of the antenna module 400 are respectively... and and to and The two sets of signals are judged separately to determine whether the antenna module 400 can operate at the correct frequency. If so, the control parameters of the antenna matching matrix 300 (including the control voltage applied to the capacitor CeqN and inductor LeqN of the antenna matching unit 310) are used when the signal quality of the antenna module 400 is at its best. If not, the control voltage of the digitally controlled variable inductor LeqN and / or the digitally controlled variable capacitor CeqN and the switch 311 are adjusted again to make the center frequency of the antenna module 400 respectively... and F0-2*△F, and on The two sets of signals are judged separately, and the value of the center frequency is gradually decreased and increased simultaneously with a step size of ΔF, up to f0±3*ΔF, ..., until the antenna module 400 operates at the correct frequency. If the offset of the real-time signal strength acquired by the coupling circuit 100 is large (for example, greater than the second adjustment threshold), the frequency adjustment of the antenna matching matrix 300 starts with N (N is an integer greater than 1) times the interval ΔF of the communication channel. The control voltage of the digitally controlled variable inductor LeqN and / or the digitally controlled variable capacitor CeqN and the switch 311 are adjusted so that the center frequencies of the antenna module 400 are f0+N*ΔF and F0-N*ΔF, respectively. The two sets of signals f0+N*ΔF and F0-N*ΔF are judged separately to see if the antenna module 400 can operate at the correct frequency. If so, the antenna module is used. When the signal quality of block 400 is at its best, the control parameters of the antenna matching matrix 300 (the control parameters include the control voltage applied to the capacitor CeqN and the inductor LeqN of the antenna matching unit 310) are controlled; otherwise, the control voltage of the digitally controlled variable inductor LeqN and / or the digitally controlled variable capacitor CeqN and the switch 311 are adjusted again so that the center frequency points of the antenna module 400 are f0+2*N*△F and F0-2*N*△F respectively, and the two sets of signals f0+2*N*△F and F0-2*N*△F are judged respectively. With N*△F as the step size, the value of the center frequency point is gradually decreased and increased simultaneously until ... until the antenna module 400 operates at the correct frequency.

[0119] Therefore, the adaptive adjustment antenna system provided by this invention employs different frequency offset adjustment strategies depending on the difference between the real-time signal strength acquired by the coupling circuit 100 and the target signal strength when the antenna module 400 experiences frequency offset: the smaller the signal strength frequency offset, the smaller the range requiring frequency adjustment; conversely, the smaller the signal strength frequency offset, the larger the range requiring frequency adjustment. With this configuration, the adaptive adjustment antenna system provided by this invention can not only automatically adapt to the correct frequency of the antenna module 400 but also significantly save automatic adjustment time, further improving the efficiency of frequency offset adjustment.

[0120] It should be noted that the present invention does not impose any limitations on the antenna module 400. For example, in terms of the shape of the antenna module 400, it can be a sheet-like (a square piece of metal), an array-like (a bundle of sheets in a well-organized two-dimensional pattern), a horn-like, a dish-like, or other forms and types of antennas.

[0121] In summary, the adaptive adjustment antenna system provided by this invention can not only automatically detect whether the antenna module 400 has a frequency offset, but also automatically adjust the operating frequency of the adaptive adjustment antenna system and / or adjust the antenna matching matrix when the antenna module 400 detects a frequency offset, so that the antenna module operates at the correct frequency, thereby improving the sensitivity of the implantable medical device in transmitting and receiving signals, maintaining high communication quality, and enabling the implantable medical device to adapt to different environments; and can also reduce the power consumption of the implantable medical device, thereby saving medical resources, manpower and economic costs.

[0122] Another embodiment of the present invention provides an implantable medical device, which includes the adaptive adjustment antenna system described in any of the above embodiments. It should be specifically noted that the present invention does not limit the specific use of the implantable medical device, which includes, but is not limited to, implantable neurostimulation systems (including but not limited to deep brain stimulation (DBS), implantable cerebral cortex stimulation (CNS), implantable spinal cord stimulation (SCS), implantable sacral nerve stimulation (SNS), implantable vagus nerve stimulation (VNS), etc.), implantable cardiac stimulation systems (commonly known as pacemakers), implantable drug infusion systems (IDDS), etc.

[0123] Since the implantable medical device provided by this invention and the adaptive adjustment antenna system provided by this invention belong to the same inventive concept, it has at least all the advantages of the adaptive adjustment antenna system, which will not be elaborated here.

[0124] Another embodiment of the present invention provides a control method for an adaptive antenna system. The adaptive antenna system includes an electrically connected coupling circuit, a control module, an antenna matching matrix, and an antenna module. For a detailed description of the adaptive antenna system, please refer to the descriptions of the adaptive antenna systems in the above embodiments; to avoid redundancy, further descriptions will not be provided here.

[0125] Specifically, please see Figure 7 This is a flowchart illustrating a control method for an adaptive adjustment antenna system according to an embodiment of the present invention. From... Figure 7 It can be seen that the control method includes:

[0126] S100: Collect the real-time signal strength of the antenna module and send the real-time signal strength to the control module;

[0127] S200: Based on the real-time signal strength and the target signal strength, determine whether the antenna module has a frequency offset. If so, adjust its own operating frequency point according to the first preset rule and / or adjust the antenna matching matrix according to the second preset rule so that the antenna module works at the correct frequency point.

[0128] With this configuration, the control method for the adaptive antenna system provided by the present invention, based on the adaptive antenna system provided in the above embodiments, can automatically and promptly detect whether the antenna module has a frequency offset without minimally invasive surgical intervention. When the antenna module has a frequency offset, it can automatically adjust the operating frequency of the adaptive antenna system and / or adjust the antenna matching matrix to ensure that the antenna module operates at the correct frequency. This improves the sensitivity of the implantable medical device in transmitting and receiving signals, maintains high communication quality, and reduces the power consumption of the implantable medical device, thereby saving medical resources, manpower, and economic costs.

[0129] Since the control method of the adaptive adjustment antenna system provided by the present invention is similar in basic principle to the adaptive adjustment antenna systems provided in the above embodiments, it will not be described in detail here to avoid redundancy. For more detailed information, please refer to the relevant description of the adaptive adjustment antenna system above.

[0130] Based on the same inventive concept, the present invention also provides an electronic device, please refer to... Figure 8 A block diagram illustrating an embodiment of the electronic device provided by the present invention is shown. Figure 8 As shown, the electronic device includes a processor 510 and a memory 520. The memory 520 stores a computer program. When the computer program is executed by the processor 510, it implements the control method of the adaptive adjustment antenna system described in the above embodiments.

[0131] Since the electronic device provided by this invention and the control method of the adaptive antenna system described above belong to the same inventive concept, the electronic device provided by this invention has all the advantages of the control method of the adaptive antenna system described above, so it will not be described again.

[0132] like Figure 8As shown, the electronic device also includes a communication interface 530 and a communication bus 540, wherein the processor 510, the communication interface 530, and the memory 520 communicate with each other via the communication bus 540. The communication bus 540 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus 540 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used to represent it in the figure, but this does not indicate that there is only one bus or one type of bus. The communication interface 530 is used for communication between the aforementioned electronic device and other devices.

[0133] The processor 510 referred to in this invention can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor 510 is the control center of the electronic device, connecting various parts of the entire electronic device through various interfaces and lines.

[0134] The memory 520 can be used to store the computer program, and the processor 510 implements various functions of the electronic device by running or executing the computer program stored in the memory 520 and calling the data stored in the memory 520.

[0135] The memory 520 may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0136] It should be noted that the systems and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0137] In addition, the functional modules in the various embodiments of this article can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0138] Another embodiment of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the control method for the adaptive antenna system described above. Since the electronic device and computer-readable storage medium provided by the present invention belong to the same inventive concept as the control method for the adaptive antenna system provided by the present invention, they have at least the same beneficial effects. Therefore, to avoid redundancy, they will not be described in detail here.

[0139] The readable storage medium of embodiments of the present invention can be any combination of one or more computer-readable media. The readable medium can be a computer-readable signal medium or a computer-readable storage medium. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable computer hard disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus, or device.

[0140] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0141] It should be noted that computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0142] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0143] In summary, the adaptive adjustment antenna system, medical device, method, electronic device, and medium provided in this embodiment can adjust the control module 200 of the adaptive antenna system and / or switch the antenna module 400. It can automatically and promptly detect whether the antenna module 400 has a frequency offset without minimally invasive surgical intervention. When the antenna module 400 has a frequency offset, it can automatically adjust the operating frequency of the adaptive adjustment antenna system and / or adjust the antenna matching matrix to ensure that the antenna module 400 operates at the correct frequency. This improves the sensitivity of the implantable medical device in transmitting and receiving signals, maintains high communication quality, and reduces the power consumption of the implantable medical device, thereby saving medical resources, manpower, and economic costs.

[0144] In summary, the above embodiments have provided detailed descriptions of different configurations of the adaptive adjustment antenna system, medical device, method, electronic device, and medium proposed by the present invention. Of course, the above descriptions are only descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention in any way. The present invention includes, but is not limited to, the configurations listed in the above embodiments. Those skilled in the art can draw inferences from the above embodiments. Any changes or modifications made by those skilled in the art based on the above disclosure are within the protection scope of the claims.

Claims

1. An adaptive adjustment antenna system for implantable medical devices, characterized in that, include: Electrically connected coupling circuit, control module, antenna matching matrix, and antenna module; The coupling circuit is configured to acquire the real-time signal strength of the antenna module and send the real-time signal strength to the control module; The control module is configured to determine whether the antenna module has a frequency offset based on the real-time signal strength and the target signal strength. If so, the control module is further configured to adjust its own operating frequency according to a first preset rule and / or adjust the antenna matching matrix according to a second preset rule to ensure that the antenna module operates at the correct frequency. Specifically, when the implantable medical device sends a signal to the external programmable device, the target signal strength is obtained based on the transmission power of the implantable medical device, the gain of the antenna module, the path loss of the signal, and the preset circuit error. When the implantable medical device receives a signal from the external programmable device, the target signal strength is obtained based on the received signal strength information, the path loss of the signal, and the preset circuit error. When the control module determines that the antenna module has a frequency offset, the control module is further configured to: If the absolute value of the difference between the real-time signal strength and the target signal strength is less than a first adjustment threshold, the control module adjusts its own operating frequency according to a first preset rule; otherwise, the control module adjusts the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency.

2. The adaptive adjustment antenna system according to claim 1, characterized in that, The control module includes a main chip and an RF front-end circuit. The main chip is connected to the antenna matching matrix through the RF front-end circuit, and the coupling circuit is connected to the main chip. The control module is further configured to adjust its own operating frequency according to a first preset rule so that the antenna module operates at the correct frequency, including: The main chip is used to adjust the operating frequency of the radio frequency front-end circuit according to a first preset rule so that the antenna module operates at the correct frequency.

3. The adaptive adjustment antenna system according to claim 1, characterized in that, The antenna matching matrix includes at least one antenna matching element; When the number of antenna matching units is equal to or greater than two, each antenna matching unit is connected in series with its corresponding switch to form an antenna matching branch, and each antenna matching branch is connected in parallel to form the antenna matching matrix. Each antenna matching unit includes an inductor and a capacitor, the equivalent inductance of the inductor and / or the equivalent capacitance of the capacitor are adjustable; one end of each inductor is connected to the control module via the switch; the other end of each inductor and one end of the corresponding capacitor are connected together and then connected to the antenna module, and the other end of each capacitor is grounded; The control module is further configured to adjust the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency, including: When the antenna matching matrix includes one antenna matching unit, the control module is used to adjust the equivalent inductance value of the inductor and / or the equivalent capacitance value of the capacitor according to the second preset rule, so that the antenna module operates at the correct frequency. When the antenna matching matrix includes two or more antenna matching units, the control module is used to control the switch of each antenna matching unit to be turned on or off, and to adjust the equivalent inductance value of the inductor and / or the equivalent capacitance value of the capacitor of each antenna matching unit according to the second preset rule, so that the antenna module works at the correct frequency.

4. The adaptive adjustment antenna system according to claim 3, characterized in that, The inductor includes a digitally controlled variable inductor, and / or the capacitor includes a digitally controlled variable capacitor.

5. The adaptive adjustment antenna system according to claim 4, characterized in that, The control module is used to adjust the equivalent inductance value of the inductor, including: adjusting the voltage applied to the terminals of the inductor to change the inductance value of the inductor; And / or the control module is used to adjust the equivalent capacitance value of the capacitor, including: adjusting the voltage applied to the terminals of the capacitor to change the electrostatic capacitance value of the capacitor.

6. The adaptive adjustment antenna system according to claim 1, characterized in that, The control module is configured to determine whether the antenna module has a frequency offset based on the real-time signal strength and the target signal strength, including: When the implantable medical device sends a signal to the external programmable device, if the absolute value of the difference between the real-time signal strength and the target signal strength is greater than a first error threshold, then the antenna module will show a frequency offset; otherwise, the antenna module will operate at a preset frequency. When the implantable medical device receives a signal from the external programmable device, if the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second error threshold, then the antenna module will experience frequency deviation; otherwise, the antenna module will operate at a preset frequency.

7. The adaptive adjustment antenna system according to claim 1, characterized in that, The control module is also used to adjust its own operating frequency according to a first preset rule, including: Centered on the current operating frequency of the implantable medical device, the operating frequency of the control module is gradually adjusted to the left and / or right according to the first adjustment step size until any of the following conditions are met: Condition 1: The adjusted operating frequency ensures that the antenna module operates at the correct frequency. Condition 2: The working frequency point after adjustment to the left is less than the lowest frequency of the working bandwidth of the implantable medical device, and the working frequency point after adjustment to the right is greater than the highest frequency of the working bandwidth of the implantable medical device, but the antenna module still does not work at the correct frequency point. Wherein, the first adjustment step size is an integer multiple of the communication channel.

8. The adaptive adjustment antenna system according to claim 7, characterized in that, It also includes the following: when adjusting the operating frequency of the control module according to the first preset rule still fails to make the antenna module work at the correct frequency, the control module is further configured to take the most matching operating frequency as the current operating frequency, and adjust the antenna matching matrix according to the second preset rule so that the antenna module works at the correct frequency; wherein, the most matching operating frequency is the operating frequency corresponding to the strongest real-time signal strength collected by the coupling circuit during the adjustment of the operating frequency of the control module.

9. The adaptive adjustment antenna system according to claim 1, characterized in that, The control module is further configured to adjust the antenna matching matrix according to a second preset rule, including: The control module is further configured to use the second adjustment step size as the adjustment step size for switching the resonant frequency of the antenna module; and to determine whether the absolute value of the difference between the real-time signal strength and the target signal strength is greater than the second adjustment threshold. If so, the third adjustment step size is used as the adjustment step size for switching the resonant frequency of the antenna module, wherein the third adjustment step size is N times the second adjustment step size, and N is an integer greater than 1. The control module is configured to adjust the inductance value of the equivalent inductance of the antenna matching matrix, the capacitance value of the equivalent capacitance of the antenna matching matrix, and / or the switching of the antenna matching matrix, so that the antenna module gradually switches the resonant frequency of the antenna module with the current center frequency as the center, and simultaneously to the left and right with the adjustment step size of the resonant frequency, until the antenna module operates at the correct frequency.

10. An implantable medical device, characterized in that, Includes the adaptive adjustment antenna system according to any one of claims 1-9.

11. A control method for an adaptive adjustment antenna system, characterized in that, The adaptive adjustment antenna system is used in implantable medical devices. The adaptive adjustment antenna system includes an electrically connected coupling circuit, a control module, an antenna matching matrix, and an antenna module. The control method includes: The real-time signal strength of the antenna module is collected and sent to the control module. Based on the real-time signal strength and the target signal strength, it is determined whether the antenna module has a frequency offset. If so, its own operating frequency is adjusted according to a first preset rule and / or the antenna matching matrix is ​​adjusted according to a second preset rule to ensure that the antenna module operates at the correct frequency. Specifically, when the implantable medical device sends a signal to the external programmable device, the target signal strength is obtained based on the transmission power of the implantable medical device, the gain of the antenna module, the path loss of the signal, and the preset circuit error. When the implantable medical device receives a signal from the external programmable device, the target signal strength is obtained based on the received signal strength information, the path loss of the signal, and the preset circuit error. When the control module determines that the antenna module has a frequency offset, the control method further includes: If the absolute value of the difference between the real-time signal strength and the target signal strength is less than a first adjustment threshold, the control module adjusts its own operating frequency according to a first preset rule; otherwise, the control module adjusts the antenna matching matrix according to a second preset rule so that the antenna module operates at the correct frequency.

12. An electronic device, characterized in that, It includes a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the control method of the adaptive adjustment antenna system as described in claim 11.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the control method for the adaptive adjustment antenna system as described in claim 11.

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