Non-contact electromagnetic field excitation device, method, wearable device and physiotherapy platform

Abstract

The application relates to a non-contact electromagnetic field excitation device, method, wearable device and physiotherapy platform. The device comprises a signal control circuit, a drive tuning circuit and a coil, the signal control circuit is electrically connected with the coil through the drive tuning circuit, the drive tuning circuit is provided with a plurality of tuning links for adjusting different frequency resonance points of the coil; the signal control circuit is used for controlling an adjustable signal corresponding to a signal frequency and a signal type according to an external control instruction, and generating a corresponding first control signal according to the adjustable signal; the drive tuning circuit is used for automatically configuring a tuning link corresponding to the adjustable signal according to the first control signal, and driving the coil to generate a corresponding alternating electromagnetic field through the tuning link according to the adjustable signal. The application can realize multi-resonance points, adjustable resonance points, wider frequency bands, wider application ranges, higher energy efficiency, no contact with a target object, comfortable fitting and physiotherapy requirements of various required modes.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a non-contact electromagnetic field excitation device, method, wearable device, and physiotherapy platform. Background Technology

[0002] With the development of medical device technology, wearable devices targeting tumors (especially malignant tumors or cancer) have emerged. This technology stimulates tumor cells externally to inhibit their division and spread, leading to the current electric field therapy products.

[0003] Traditional electric field therapy products come in two main forms. One type injects mid-frequency current / voltage through electrodes on the skin surface to generate a mid-frequency electric field at the tumor site that inhibits tumor cell mitosis. However, this method has drawbacks such as prolonged contact between the electrodes and the skin, potential heat generation, and the risk of allergies, infections, or ulceration between the electrodes and the skin. The electrodes also offer poor comfort and ease of use. The other type uses a closed magnetic ring or chain within a metal coil. By applying a preset alternating current to the metal coil, a preset alternating magnetic field is generated within the magnetic ring or chain, further forming a preset alternating electric field perpendicular to the magnetic ring. The main drawback of this method is that generating the desired therapeutic electric field signal requires components such as magnetic rings and chains, resulting in a complex hardware system. Furthermore, the rigid structure of these components makes it difficult to accurately adhere to the target, leading to poor efficacy. Summary of the Invention

[0004] Based on this, it is necessary to address the above-mentioned technical problems by providing a non-contact electromagnetic field excitation device, method, wearable device, and physiotherapy platform that features multiple resonant points, adjustable resonant points, wider frequency bands, broader applicability, higher energy efficiency, comfortable fit, and ease of use.

[0005] In a first aspect, this application provides a non-contact electromagnetic field excitation device, including: a signal control circuit, a drive tuning circuit, and a coil. The signal control circuit is electrically connected to the coil via the drive tuning circuit. The drive tuning circuit is provided with multiple tuning links for adjusting the resonant points of the coil at different frequencies.

[0006] The signal control circuit is used to control the generation of an adjustable signal with corresponding signal frequency and signal type according to external control commands, and to generate a corresponding first control signal according to the adjustable signal. The drive tuning circuit is used to automatically configure the tuning link corresponding to the adjustable signal according to the first control signal, and to drive the coil to generate a corresponding alternating electromagnetic field according to the adjustable signal through the tuning link. The alternating electromagnetic field excites the target object, and the coil and the target object are spaced apart.

[0007] In one embodiment, the drive tuning circuit includes a drive module and a tuning module. The drive module is electrically connected to the coil via the tuning module. The drive module is used to convert the adjustable signal into a drive signal. The tuning module is used to automatically configure the tuning link of the drive signal output according to the first control signal, and drive the coil to generate a corresponding alternating electromagnetic field via the drive signal of the tuning link.

[0008] In one embodiment, the tuning module includes at least a multiplexer and tunable units in each tuning link. The driving module is electrically connected to one end of each tunable unit via the multiplexer, and the other end of each tunable unit is electrically connected to different taps of the coil. The different taps correspond to different numbers of turns in the coil.

[0009] The multiplexer switch is used to select the tuning link, and the tunable unit is used to adjust the frequency resonant point of the coil.

[0010] In one embodiment, the drive tuning circuit further includes a data acquisition module for acquiring the drive current and drive voltage of the drive signal output. The signal control circuit is also used to generate a second control signal based on the phase difference between the drive current and the drive voltage. The tuning module is also used to adjust the tunable unit based on the second control signal to adjust the coil's emission efficiency.

[0011] In one embodiment, the signal control circuit is also used for circuit monitoring and protection based on drive current and drive voltage.

[0012] In one embodiment, the signal control circuit includes a microcontroller unit, a digital signal synthesis module, an attenuator module, and an amplification and filtering module. The microcontroller unit is electrically connected to the digital signal synthesis module and the attenuator module, respectively. The digital signal synthesis module is electrically connected to the attenuator module, and the attenuator module is electrically connected to the drive tuning circuit via the amplification and filtering module.

[0013] The microcontroller unit is used to control the signal frequency and signal type of the signal generated by the digital signal synthesis module according to external control commands, and to control the attenuation factor of the attenuator module. The amplification and filtering module is used to amplify and filter the signal generated by the digital signal synthesis module and output by the attenuator module to obtain an adjustable signal.

[0014] In one embodiment, the signal control circuit further includes a communication module electrically connected to the microcontroller unit for communicating with an external host computer to obtain control commands.

[0015] Secondly, this application provides a non-contact electromagnetic field excitation method, comprising the following steps:

[0016] Obtain control commands;

[0017] The system generates an adjustable signal with corresponding frequency and type according to the control command, and generates a corresponding first control signal based on the adjustable signal.

[0018] The tuning link corresponding to the adjustable signal is automatically configured according to the first control signal, and the corresponding alternating electromagnetic field is generated by driving the coil through the tuning link according to the adjustable signal.

[0019] Thirdly, this application provides a wearable device, including a wearable body and a non-contact electromagnetic field excitation device as described in any of the above embodiments, wherein a coil is disposed on the side of the wearable body close to the target object, and the coil and the target object are spaced apart, and the wearable body is a headband body, a belt body, a backpack body, or a clothing body.

[0020] In one embodiment, a temperature sensor electrically connected to the signal control circuit is also included. The temperature sensor is located in the wearable body at a position corresponding to the coil and is used to detect the operating temperature of the coil. The signal control circuit is also used to adjust the adjustable signal or turn off the output of the adjustable signal according to the operating temperature.

[0021] In one embodiment, the non-contact electromagnetic field excitation device has multiple coils that are laid flat and / or stacked together, wherein the coils are rectangular or circular.

[0022] In one embodiment, the coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is secured to the wearable body via insulated braided wire, Velcro, or a pocket-style fastener.

[0023] Fourthly, this application provides a physiotherapy platform, including a fixed platform and a non-contact electromagnetic field excitation device as described in any of the above embodiments, wherein a coil is disposed on the side of the fixed platform close to the target object, and the coil and the target object are spaced apart.

[0024] The aforementioned non-contact electromagnetic field excitation device, method, wearable device, and physiotherapy platform, on the one hand, can form multiple resonant points on the same coil through the drive output of multiple different tuning links, thereby covering a wider frequency band and having a wider range of applications. Especially in the case of drive output such as frequency sweeping and frequency conversion, it can ensure that the emission efficiency of the coil is always maintained above the required efficiency, thereby ensuring the excitation effect and further improving energy efficiency. Moreover, the corresponding resonant frequency can be independently adjusted through each tuning link, and the frequency band range can be precisely adjusted through the adjustment of each resonant point, further improving the applicability. On the other hand, the coil fits well with the target object while maintaining a certain distance from the target object, eliminating the risk of infection and ulceration, making it comfortable and easy to use. Furthermore, the shape of the coil conforms to the physiotherapy area of ​​the target object, achieving the best physiotherapy effect. At the same time, through the control drive circuit electrically connected to the coil, the electromagnetic field generated by the coil can be easily controlled, thereby realizing various required physiotherapy modes. The operation is simple and the effect is good. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural block diagram of a non-contact electromagnetic field excitation device in one embodiment;

[0027] Figure 2 This is a schematic diagram of the electromagnetic field of a non-contact electromagnetic field excitation device in one embodiment.

[0028] Figure 3 This is a microcontroller unit and power supply circuit diagram of a non-contact electromagnetic field excitation device in one embodiment;

[0029] Figure 4 This is a circuit diagram of the digital signal synthesis module of a non-contact electromagnetic field excitation device in one embodiment.

[0030] Figure 5 This is a circuit diagram of the attenuator module of a non-contact electromagnetic field excitation device in one embodiment.

[0031] Figure 6 This is a circuit diagram of the amplification and filtering module of a non-contact electromagnetic field excitation device in one embodiment.

[0032] Figure 7 This is a circuit diagram of the drive module of a non-contact electromagnetic field excitation device in one embodiment.

[0033] Figure 8 This is a circuit diagram of the tuning module of a non-contact electromagnetic field excitation device in one embodiment.

[0034] Figure 9 This is a circuit diagram of the acquisition module of a non-contact electromagnetic field excitation device in one embodiment;

[0035] Figure 10 This is a coil circuit diagram of a non-contact electromagnetic field excitation device in one embodiment;

[0036] Figure 11 This is a diagram illustrating the multiple resonant points of a non-contact electromagnetic field excitation device in one embodiment.

[0037] Figure 12 This is a test result diagram of a non-contact electromagnetic field excitation device in one embodiment;

[0038] Figure 13 This is an overall flowchart of a non-contact electromagnetic field excitation method in one embodiment;

[0039] Figure 14 This is a structural diagram of a wearable device in one embodiment;

[0040] Figures 15 to 19 Here are structural diagrams of the wearable body in some embodiments;

[0041] Figure 20 This is a tiled structure diagram of multiple coils in a wearable device in one embodiment;

[0042] Figure 21 This is a diagram showing the stacked structure of multiple coils in a wearable device in one embodiment.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Target object; 2. Tumor cells;

[0045] 10. Coil; 20. Signal control circuit; 21. Microcontroller unit; 22. Digital signal synthesis module; 23. Attenuator module; 24. Amplification and filtering module; 30. Drive and tuning circuit; 31. Drive module; 32. Tuning module; 321. Multiplexer switch; 322. Tunable unit; 33. Acquisition module; 40. Wearable body; 50. Temperature sensor. Detailed Implementation

[0046] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0048] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various names of the same concept, but these names are not limited by these terms. These terms are only used to distinguish one name from another.

[0049] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0050] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0051] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" 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 invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0052] In one embodiment, such as Figure 1 As shown, a non-contact electromagnetic field excitation device is provided, including: a signal control circuit 20, a drive tuning circuit 30 and a coil 10. The signal control circuit 20 is electrically connected to the coil 10 via the drive tuning circuit 30. The drive tuning circuit 30 is provided with multiple tuning links for adjusting the resonant points of the coil at different frequencies.

[0053] The signal control circuit 20 is used to control the generation of an adjustable signal with corresponding signal frequency and signal type according to external control instructions, and to generate a corresponding first control signal according to the adjustable signal. The drive tuning circuit 30 is used to automatically configure the tuning link corresponding to the adjustable signal according to the first control signal, and to drive the coil to generate a corresponding alternating electromagnetic field according to the adjustable signal through the tuning link. The alternating electromagnetic field excites the target object, and the coil and the target object are spaced apart.

[0054] Specifically, the signal control circuit receives external control commands and generates adjustable signals with corresponding signal frequencies and types. The signal control circuit generates adjustable signals through signal modulation. The adjustable signals can control the frequency and electric field strength of the alternating electromagnetic field. Specifically, the signal control circuit controls the alternating electromagnetic field through the signal frequency, signal type, and signal strength. At the same time, the signal control circuit is also used to control the selection and configuration of the tuning link in the drive tuning circuit. Specifically, it generates a corresponding first control signal based on the adjustable signal to achieve relevant control of the drive tuning circuit.

[0055] Specifically, an adjustable signal controls a driving tuning circuit to drive a coil to generate an alternating electromagnetic field. The driving tuning circuit selects a tuning link for its drive output based on a first control signal corresponding to the adjustable signal. The output of each tuning link is connected to the coil. The tuning link transmits the alternating current signal driven by the driving tuning circuit to the coil to drive it to generate an alternating electromagnetic field. Different tuning links correspond to different frequency resonance points of the coil. Specifically, a suitable tuning link can be matched according to the signal frequency of the adjustable signal so that the frequency of the alternating electromagnetic field generated by the output driving coil is near the corresponding frequency resonance point, thereby achieving good transmission efficiency. In some embodiments, the tuning link achieves antenna tuning through tunable units. Specifically, the driving tuning circuit adjusts the tunable units in each tuning link according to the range of the adjustable signal to adjust each resonance point, thereby ensuring that the frequency band of the entire coil covers the required range. Further, the tunable unit can be a device such as an adjustable capacitor.

[0056] In some embodiments, the coil may be a planar coil, and the shape of the planar coil may be circular, elliptical, square, or rectangular to approximate the shape of the treatment area of ​​the target object. The number of coils may be one or more, and multiple coils may be arranged side-by-side or opposite to each other to fully cover the area requiring treatment. See also Figure 2 The generated alternating electromagnetic field acts on the tumor cells 2 of the target object 1, which can be any part of the body. The coil 10 is attached to the target object 1 and maintains a certain distance from the target object 1, and the two are very close to each other to ensure the best electromagnetic field effect. Specifically, some insulating materials can be used to separate them.

[0057] The aforementioned non-contact electromagnetic field excitation device, on the one hand, can form multiple resonant points on the same coil through the drive output of multiple different tuning links, thereby covering a wider frequency band and having a wider range of applications. Especially in the case of drive output such as frequency sweeping and frequency conversion, it can ensure that the coil's emission efficiency always remains above the required efficiency, thereby ensuring the excitation effect and further improving energy efficiency. Moreover, the corresponding resonant frequency can be independently adjusted through each tuning link, and the frequency band range can be precisely adjusted by adjusting each resonant point, further improving the applicability. On the other hand, the coil fits well with the target object while maintaining a certain distance from the target object, eliminating the risk of infection and ulceration, making it comfortable and easy to use. Furthermore, the shape of the coil conforms to the physiotherapy area of ​​the target object, achieving the best physiotherapy effect. At the same time, through the control drive circuit electrically connected to the coil, the electromagnetic field generated by the coil can be easily controlled, thereby realizing various required physiotherapy modes. It is simple to operate and has good effects.

[0058] In one embodiment, see Figure 1 The signal control circuit 20 includes a microcontroller unit 21, a digital signal synthesis module 22, an attenuator module 23, and an amplification and filtering module 24. The microcontroller unit 21 is electrically connected to the digital signal synthesis module 22 and the attenuator module 23, respectively. The digital signal synthesis module 22 is electrically connected to the attenuator module 23, and the attenuator module 23 is electrically connected to the drive tuning circuit 30 via the amplification and filtering module 24. The microcontroller unit 21 is used to control the signal frequency and signal type of the signal generated by the digital signal synthesis module 22 according to external control commands, and to control the attenuation factor of the attenuator module 23. The amplification and filtering module 24 is used to amplify and filter the signal generated by the digital signal synthesis module 22 and output by the attenuator module 23 to obtain an adjustable signal.

[0059] Specifically, see Figure 3 The microcontroller unit can be implemented using a microcontroller chip or other control circuits, such as a CPU, and is powered by a power supply chip. The microcontroller unit communicates with an external host computer to obtain control commands. By parsing the control commands, it obtains the corresponding configuration data, which includes, but is not limited to, the configuration information of the data signal synthesis module and the attenuator module. Based on the configuration data, it controls the digital signal synthesis module and the attenuator module to achieve control of the adjustable signal.

[0060] Specifically, see Figure 4The digital signal synthesis module can be implemented using a digital signal synthesis chip or other signal generators. For example, it can be composed of a reference oscillator, a frequency synthesis module, a modulation module, and a level control module. It receives configuration information from the microcontroller unit and generates the required signal using digital signal synthesis technology. The signal type can be a sine wave, a square wave, a triangle wave, etc., and the signal frequency can range from 0.1kHz to 1MHz. The corresponding output forms of the signal include fixed frequency mode and sweep frequency mode. Fixed frequency mode is a fixed frequency output, and sweep frequency mode is a variable frequency output. By different combinations of signal type, signal frequency, and signal output form, a variety of different signals can be formed, thereby generating different alternating electromagnetic fields.

[0061] Specifically, see Figure 5 and Figure 6 The attenuator module can be implemented using an attenuator chip or other attenuators. The amplification and filtering module uses an operational amplifier. The attenuator module and the amplification and filtering module work together to control the signal strength of the adjustable signal, thereby adjusting the electric field strength of the alternating electromagnetic field generated by the coil. The attenuator module receives configuration information from the microcontroller unit and sets the signal attenuation factor. The signal output from the digital signal synthesis module is attenuated by the attenuator module and then amplified by the amplification and filtering module to obtain the desired adjustable signal. In some embodiments, the amplification and filtering module further includes a filter for signal filtering to remove interference signals from the signal.

[0062] In one embodiment, the signal control circuit further includes a communication module electrically connected to the microcontroller unit for communicating with an external host computer to obtain control commands. The communication module can be based on wired communication, such as serial communication or bus communication, or on wireless communication, such as Bluetooth, WIFI, Zigbee and other wireless communication technologies.

[0063] In one embodiment, see Figure 1 The drive tuning circuit 30 includes a drive module 31 and a tuning module 32. The drive module 31 is electrically connected to the coil 10 via the tuning module 32. The drive module 31 is used to convert the adjustable signal into a drive signal. The tuning module 32 is used to automatically configure the tuning link of the drive signal output according to the signal frequency of the adjustable signal. The drive signal drives the coil 10 to generate an alternating electromagnetic field via the tuning link.

[0064] Specifically, see Figure 7The drive module includes at least a current drive chip for converting adjustable signals into drive signals. The current drive chip generates a corresponding alternating current signal based on the input adjustable signal to drive the coil to generate an alternating electromagnetic field. Different adjustable signals result in different output alternating current signals. The frequency and type of the output alternating current signal are controlled by the signal frequency and signal type of the adjustable signal, thereby controlling the frequency and electric field strength of the alternating electromagnetic field.

[0065] Specifically, see Figure 8 The tuning module 32 includes at least a multiplexer 321 and tunable units 322 in each tuning link. The drive module is electrically connected to one end of each tunable unit 322 via the multiplexer 321, and the other end of each tunable unit 322 is electrically connected to different taps of the coil. See [reference needed] Figure 10 Different taps correspond to different numbers of coil turns. The microcontroller unit in the signal control module generates a first control signal based on the output frequency of the adjustable signal. This signal controls the multiplexer to select the tuning link corresponding to the adjustable signal, i.e., the tuning link driving the signal output, thus matching the frequency of the adjustable signal with the resonant frequency. Simultaneously, the signal control module can also control the tunable unit in each tuning link to adjust the frequency resonant point of the coil. By adjusting the number of coil turns through different taps connected to the tuning link, the frequency resonant point of the coil can be adjusted. In other words, adjusting the number of coil turns achieves coarse adjustment of the frequency resonant point, while setting up tunable units achieves fine adjustment. Together, these two methods achieve precise adjustment of the coil's frequency resonant point. (See also...) Figure 11 By adjusting multiple tuning links, multiple resonant points of the coil are formed, and each resonant point can be adjusted by a corresponding tunable unit. In this way, a wide range of frequency bands are covered, ensuring that the transmission efficiency of the coil is maximized in the covered frequency bands.

[0066] In one embodiment, see Figure 1 and Figure 9 The drive tuning circuit 30 also includes a data acquisition module 33 for acquiring the drive current and drive voltage of the drive signal output. The signal control circuit 20 is also used to generate a second control signal based on the phase difference between the drive current and the drive voltage. The tuning module 32 is also used to adjust the tunable unit based on the second control signal to adjust the coil's emission efficiency.

[0067] Specifically, the microcontroller unit in the signal control circuit acquires the drive signal from the acquisition module, outputting the drive current and drive voltage. It then configures each tunable unit via a second control signal, causing the phase difference between the drive current and drive voltage to approach zero or reach a preset requirement, thereby maximizing the coil's emission efficiency or achieving the preset requirement. (See also...) Figure 9In this embodiment, current and voltage are collected by sampling resistor, and the phase difference between driving current and driving voltage is identified by phase detector, so that the microcontroller unit can adjust the transmission efficiency to maximize the transmission efficiency of the coil or reach the preset requirements.

[0068] In some embodiments, the microcontroller unit in the signal control circuit can also monitor the circuit based on the drive current and drive voltage, and connect to the output status of the drive tuning circuit. When abnormal conditions such as short circuit or overvoltage occur, the output of the drive tuning circuit can be stopped in a timely manner through the control of the microcontroller unit to achieve the function of circuit protection.

[0069] In one embodiment, the coil is disposed on a PCB substrate or an FPC substrate. The PCB substrate is a rigid substrate, suitable for the flat body surface of the target object, while the FPC substrate is a flexible substrate, suitable for the curved body surface of the target object. Of course, the coil can be combined in both ways to better fit the body surface of the target object, thereby fully covering the area to be treated.

[0070] This embodiment will now be described in detail with reference to a specific circuit, but it is not limited thereto.

[0071] See Figures 3 to 10 In this embodiment, a microcontroller unit (MCU) controls a digital signal synthesis module (DDS) to generate a signal A of the required frequency. This signal can be a sine wave, square wave, or other similar signal. Signal A passes through an attenuator module to obtain signal B, which is then amplified by an amplification and filtering module to generate an adjustable signal C. The adjustable signal C is then input to a drive module to generate a drive signal D. Simultaneously, the MCU controls a multiplexer in the tuning module to select a tuning link corresponding to a matching resonant frequency based on the frequency of the adjustable signal. The drive signal D drives a coil through the automatically selected tuning link in the tuning module to generate an alternating electromagnetic field.

[0072] For the specific circuit details, please refer to... Figures 3 to 10The host computer configures the microcontroller unit (MCU) via the Bluetooth communication module. Based on the configuration data, the MCU configures the digital signal synthesis module via the MCU_SPI signal on the SPI pin. The MCU configures the attenuation factor of the attenuator module via the CONTROL[0…6] signal on the GPIO pin. The digital signal synthesis module generates a sine wave A at the corresponding frequency at the IOUTB terminal. Signal A is input to RF1 of the digital signal attenuator module, and the attenuated signal B is output from RF2. Signal B is amplified by the operational amplifier of the amplification and filtering module to generate signal C. Signal C is input to the current drive chip from the INP interface to generate a drive signal D, which is output from the OUT pin to the tuning module. The MCU controls the multiplexer switch to select the tuning link S1 to S4 of the drive signal D output via the MCU_SWITCH_EN and MCU_SWITCH_CTR[0…3] signals on the GPIO pin. The drive signal D is input to the corresponding tap of the coil via the selected tuning link, thereby driving the coil to generate an alternating electromagnetic field. Meanwhile, the voltage and current signals of the drive signal D are acquired by the acquisition module, the phase difference between the two is identified by the phase detector, and the feedback is sent to the microcontroller unit via the MCU_VPHS signal. The microcontroller unit adjusts the size of the capacitor through the CTR[0…3] of the GPIO interface, thereby maximizing the emission efficiency of the coil or reaching the preset requirements.

[0073] The present embodiment will now be described in detail based on the test results, but it is not limited thereto.

[0074] The device in this embodiment can control the output of an alternating electromagnetic field with a frequency of 0.1 kHz to 1 MHz and an electric field strength of 0.1 V / cm to 10 V / cm. Through testing and analysis, the output waveform can include sine waves, square waves, triangular waves, etc. Using an alternating electromagnetic field with a frequency sweep of 10 kHz to 1 MHz, a step frequency of 10 kHz, and an electric field strength of 1 V / cm, the alternating electromagnetic field is applied to tumor cells, and the changes in the tumor cells are as follows... Figure 12 As shown in the figure, the OD values ​​of the two groups of tumor cells, A and B, were both 1.0 before placement. After 48 hours, the OD value of the tumor cells in group A, which was not subjected to the electric field strength of this method, was about 1.3, while the OD value of group B, after the electromagnetic field sweeping effect, was 0.9. This indicates that the device of this embodiment has an inhibitory effect on the division and spread of tumor cells.

[0075] Based on the same inventive concept, this application also provides a non-contact electromagnetic field excitation method for implementing the aforementioned non-contact electromagnetic field excitation device. The solution provided by this method is similar to the solution described in the aforementioned device; therefore, the specific limitations in one or more embodiments of the non-contact electromagnetic field excitation method provided below can be found in the limitations of the non-contact electromagnetic field excitation device described above, and will not be repeated here.

[0076] In one embodiment, such as Figure 13 As shown, a non-contact electromagnetic field excitation method is provided, including the following steps:

[0077] S100: Obtain control commands;

[0078] S200: Generates an adjustable signal with corresponding signal frequency and signal type according to the control command, and generates a corresponding first control signal according to the adjustable signal;

[0079] S300: Automatically configures the tuning link corresponding to the adjustable signal according to the first control signal, and drives the coil to generate the corresponding alternating electromagnetic field according to the adjustable signal via the tuning link.

[0080] In one embodiment, automatically configuring the tuning link corresponding to the adjustable signal according to the first control signal, and driving the coil to generate the corresponding alternating electromagnetic field according to the adjustable signal via the tuning link includes: the driving module converting the adjustable signal into a driving signal, the tuning module automatically configuring the tuning link output by the driving signal according to the first control signal, and driving the coil to generate the corresponding alternating electromagnetic field via the driving signal of the tuning link.

[0081] In one embodiment, the method further includes: acquiring the drive current and drive voltage of the drive signal output; the signal control circuit generating a second control signal based on the phase difference between the drive current and the drive voltage; and the tuning module adjusting the tunable unit based on the second control signal to adjust the emission efficiency of the coil.

[0082] In one embodiment, the signal control circuit also performs circuit monitoring and protection based on the drive current and drive voltage.

[0083] In one embodiment, generating an adjustable signal with corresponding signal frequency and signal type according to control instructions includes: the microcontroller unit controlling the signal frequency and signal type of the signal generated by the digital signal synthesis module according to external control instructions, and controlling the attenuation factor of the attenuator module; the amplification and filtering module amplifying and filtering the signal generated by the digital signal synthesis module and output by the attenuator module to obtain the adjustable signal.

[0084] In one embodiment, such as Figure 14As shown, a wearable device is provided, including: a wearable body 40, and a non-contact electromagnetic field excitation device as described in any of the above embodiments, wherein a coil 10 is disposed on the side of the wearable body 40 near a target object, and the coil 10 is spaced apart from the target object. In some embodiments, see Figures 15 to 19 The wearable body can be a headband-style body, a belt-style body, a backpack-style body, or a clothing-style body. The headband-style body can be a hat-shaped body, a headband-shaped body, etc. The belt-style body can be a leather belt-shaped body, etc. The backpack-style body can be a crossbody style, a double-shoulder style, etc. The clothing-style body can be an underwear style, an outer garment style, a scarf style, etc.

[0085] Specifically, the coil can be rectangular or circular, or other shapes adapted to the wearable body, so as to better fit the user's surface, reduce gaps and improve the effect.

[0086] Specifically, the coil can be a coil obtained based on ordinary winding methods, such as winding with silk-covered wire, winding with enameled wire, winding with silk-covered wire on a ferrite magnetic sheet, etc. The coil can also be a coil obtained based on printed circuit board (PCB) manufacturing process or flexible circuit board (FPC) manufacturing process. The coil can also be a coil obtained based on braiding process, such as braiding conductive wires (silk-covered wire, enameled wire) into wearable clothing according to the coil arrangement process to improve the comfort of wearable clothing.

[0087] In one embodiment, see Figure 14 It also includes a temperature sensor 50 electrically connected to the signal control circuit 20. The temperature sensor 50 is located in the wearable body 40 at a position corresponding to the coil 10 and is used to detect the operating temperature of the coil 10. The signal control circuit 20 is also used to adjust the adjustable signal or turn off the output of the adjustable signal according to the operating temperature.

[0088] Specifically, the temperature sensor can be placed at the center of the coil to accurately measure the temperature of the coil when it is working. However, if the coil temperature is too high, the signal control circuit in the non-contact electromagnetic field excitation device can reduce the output power of the drive tuning circuit by adjusting the output of the adjustable signal, or it can turn off the output of the adjustable signal to stop the output of the drive tuning circuit, thereby ensuring the safety and comfort of the wearer.

[0089] In one embodiment, see Figure 20 and Figure 21 The non-contact electromagnetic field excitation device has multiple coils, which are laid flat and / or stacked together.

[0090] Specifically, the coils can be connected in series or in parallel, as shown in [reference needed]. Figure 20Any two coils can be laid flat together to obtain a larger electromagnetic field area, thus enabling them to act on a larger area. See [link / reference]. Figure 21 Furthermore, any two coils can be stacked to obtain a greater electromagnetic field strength, thus enabling them to act on deeper areas. Moreover, the above two methods can be combined according to actual needs to obtain an electromagnetic field with a larger area and stronger intensity.

[0091] In one embodiment, the coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is secured to the wearable body via insulated braided wire, Velcro, or a pocket-style fastener.

[0092] Specifically, a plug-in interface is used between the coil and the drive tuning circuit, allowing for easy replacement of different coils and facilitating the multi-purpose use of the non-contact electromagnetic field excitation device. The coil can be fixed to the wearable device using insulated braided wire, Velcro, or a pocket-style attachment. The braided method uses insulated braided wire to secure the coil to the wearable garment, ensuring a tight fit and seamless integration without noticeable obstruction, and preventing it from easily falling off. The Velcro method involves attaching Velcro (LOOP) to the back of the coil, securing it to the corresponding Velcro (HOOK) position on the wearable device. This method is detachable, relatively convenient and simple to use, and also facilitates cleaning of the wearable device. The pocket-style attachment method involves sewing a pocket matching the coil into the corresponding position on the wearable garment to place and secure the coil, thus fixing its position and preventing it from easily falling off.

[0093] For other specific limitations regarding wearable devices, please refer to the limitations on non-contact electromagnetic field excitation devices mentioned above, which will not be repeated here.

[0094] In one embodiment, a physiotherapy platform is provided, including a fixed platform and a non-contact electromagnetic field excitation device as described in any of the above embodiments, wherein a coil is disposed on the side of the fixed platform near the target object, and the coil and the target object are spaced apart. In some embodiments, the fixed platform may be a structure for lying down, such as a bed structure, or a structure for sitting or lying down, such as a reclining chair structure, etc.

[0095] For specific limitations regarding the physiotherapy platform, please refer to the limitations on non-contact electromagnetic field excitation devices mentioned above, which will not be repeated here.

[0096] 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 specification.

[0097] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. 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 patent application should be determined by the appended claims.

Claims

1. A non-contact electromagnetic field excitation device, characterized in that, include: The system includes a signal control circuit, a drive tuning circuit, and a coil. The signal control circuit is electrically connected to the coil via the drive tuning circuit. The drive tuning circuit has multiple tuning links for adjusting the different frequency resonance points of the coil. The signal control circuit is used to control the generation of an adjustable signal with a corresponding signal frequency and signal type according to an external control command, and to generate a corresponding first control signal according to the adjustable signal. The drive tuning circuit is used to automatically configure the tuning link corresponding to the adjustable signal according to the first control signal, and to drive the coil to generate a corresponding alternating electromagnetic field through the tuning link according to the adjustable signal. The alternating electromagnetic field excites the target object, and the coil and the target object are spaced apart. The drive tuning circuit includes a drive module and a tuning module. The drive module is electrically connected to the coil via the tuning module. The drive module is used to convert the adjustable signal into a drive signal. The tuning module is used to automatically configure the tuning link output by the drive signal according to the first control signal, and drive the coil to generate the corresponding alternating electromagnetic field via the drive signal of the tuning link. The tuning module includes at least a multiplexer and tunable units in each of the tuning links. The driving module is electrically connected to one end of each of the tunable units via the multiplexer, and the other end of each of the tunable units is electrically connected to different taps of the coil. The number of turns of the coil corresponds to different taps. The multiplexer is used to select the tuning link, and the tunable unit is used to adjust the frequency resonant point corresponding to the coil. The drive tuning circuit also includes a signal control module. The microcontroller unit in the signal control module generates a first control signal based on the output frequency of the adjustable signal to control the multiplexer to select the tuning link corresponding to the adjustable signal, that is, the tuning link output by the drive signal, so as to achieve the matching of the frequency of the adjustable signal with the resonant frequency. The signal control module controls the tunable unit in each tuning link to adjust the frequency resonance point of the coil. By adjusting the number of coil turns through different taps connected to the tuning link, the frequency resonance point of the coil can be adjusted. The adjustment of multiple tuning links forms multiple resonance points of the coil, and each resonance point can be adjusted by the corresponding tunable unit.

2. The apparatus according to claim 1, characterized in that, The drive tuning circuit further includes a data acquisition module for acquiring the drive current and drive voltage output by the drive signal. The signal control circuit is also used to generate a second control signal based on the phase difference between the drive current and the drive voltage. The tuning module is also used to adjust the tunable unit based on the second control signal to adjust the emission efficiency of the coil.

3. The apparatus according to claim 2, characterized in that, The signal control circuit is also used for circuit monitoring and protection based on the drive current and the drive voltage.

4. The apparatus according to any one of claims 1 to 3, characterized in that, The signal control circuit includes a microcontroller unit, a digital signal synthesis module, an attenuator module, and an amplification and filtering module. The microcontroller unit is electrically connected to the digital signal synthesis module and the attenuator module, respectively. The digital signal synthesis module is electrically connected to the attenuator module. The attenuator module is electrically connected to the drive tuning circuit via the amplification and filtering module. The microcontroller unit is used to control the signal frequency and signal type of the signal generated by the digital signal synthesis module according to external control commands, and to control the attenuation factor of the attenuator module. The amplification and filtering module is used to amplify and filter the signal generated by the digital signal synthesis module and output by the attenuator module to obtain the adjustable signal.

5. The apparatus according to claim 4, characterized in that, The signal control circuit also includes a communication module electrically connected to the microcontroller unit for communicating with an external host computer to obtain control commands.

6. A non-contact electromagnetic field excitation method, characterized in that, Includes the following steps: Obtain control commands; The control command generates an adjustable signal with corresponding signal frequency and signal type, and the adjustable signal generates a corresponding first control signal. The tuning link corresponding to the adjustable signal is automatically configured according to the first control signal, and the corresponding alternating electromagnetic field is generated by driving the coil through the tuning link according to the adjustable signal. Automatically configure the tuning link corresponding to the adjustable signal according to the first control signal, and generate a corresponding alternating electromagnetic field by driving the coil through the tuning link according to the adjustable signal, including: The adjustable signal is converted into a driving signal, and the tuning link output by the driving signal is automatically configured according to the first control signal. The driving signal of the tuning link drives the coil to generate the corresponding alternating electromagnetic field. The first control signal is generated based on the output frequency of the adjustable signal to control the multiplexer to select the tuning link corresponding to the adjustable signal, that is, the tuning link of the drive signal output, so as to achieve the matching of the frequency of the adjustable signal with the resonant frequency. By adjusting the number of turns of the corresponding coil through different taps connected by the tuning links, the frequency resonance point of the coil can be adjusted; the adjustment of multiple tuning links forms multiple resonance points of the coil.

7. A wearable device, characterized in that, The device includes a wearable body and a non-contact electromagnetic field excitation device as described in any one of claims 1 to 5, wherein a coil is disposed on the side of the wearable body close to the target object, and the coil is spaced apart from the target object, and the wearable body is a headband body, a belt body, a backpack body, or a clothing body.

8. The wearable device according to claim 7, characterized in that, It also includes a temperature sensor electrically connected to the signal control circuit, wherein the temperature sensor is located in the wearable body at a position corresponding to the coil, and is used to detect the operating temperature of the coil. The signal control circuit is also used to adjust the adjustable signal or turn off the output of the adjustable signal according to the operating temperature.

9. The wearable device according to claim 7, characterized in that, The non-contact electromagnetic field excitation device is provided with multiple coils, which are laid flat and / or stacked together.

10. The wearable device according to claim 7, characterized in that, The coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is fixed to the wearable body by insulated braided wire, Velcro, or pocket-style fastening.

11. A physiotherapy platform, characterized in that, The device includes a fixed platform and a non-contact electromagnetic field excitation device as described in any one of claims 1 to 5, wherein a coil is disposed on the side of the fixed platform near the target object, and the coil is spaced apart from the target object.

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