WO2024139610A1 - Non-contact electromagnetic field excitation apparatus and method, wearable device, and physiotherapy platform - Google Patents

Abstract

A non-contact electromagnetic field excitation apparatus (100) and method (1000), a wearable device (200), and a physiotherapy platform (300). The non-contact electromagnetic field excitation apparatus (100) comprises a signal control circuit (20), a driving tuning circuit (30), and a coil (10). The signal control circuit (20) is electrically connected to the coil (10) by means of the driving tuning circuit (30), and the driving tuning circuit (30) is provided with a plurality of tuning links (301) for adjusting resonance points of different frequencies of the coil (10).

Description

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

Related Applications

This application claims priority to Chinese patent application number 202211684234.3, filed on December 27, 2022, and entitled “Non-contact electromagnetic field excitation device, method, wearable device and physical therapy platform”, the entire text of which is hereby incorporated by reference.

Technical Field

The present application relates to the field of medical device technology, and in particular to a non-contact electromagnetic field excitation device, method, wearable device and physical therapy platform.

Background technique

With the development of medical device technology, wearable devices and other technologies for tumors (especially malignant tumors or cancers) have emerged. This technology stimulates tumor cells through external factors to inhibit division and spread, which in turn led to the current electric field therapy products.

Traditional electric field therapy products, one injects medium frequency current/voltage through surface electrodes to generate a medium frequency electric field at the tumor site to inhibit tumor cell mitosis. Its disadvantages are that the electrodes have to be in contact with the skin for a long time, the electrodes are prone to heat, and the electrodes and skin are prone to allergies/infections/ruptures, etc. The electrodes are not comfortable to wear and easy to use. The other method uses a closed magnetic ring or magnetic chain in a metal coil, and loads a preset alternating current on the metal coil to generate a preset alternating magnetic field in the magnetic ring or magnetic chain, and further forms a preset alternating electric field in a direction perpendicular to the magnetic ring. Its main disadvantage is that the electric field signal required for treatment needs to pass through components such as magnetic rings and magnetic chains. The hardware system is relatively complex and has a rigid structure. It cannot accurately fit the target, resulting in poor results.

Summary of the invention

According to various embodiments of the present application, a non-contact electromagnetic field excitation device, method, wearable device and physical therapy platform are provided.

In a first aspect, the present 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, and 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 to control the generation of an adjustable signal of corresponding signal frequency and signal type according to an external control instruction, and to generate a corresponding first control signal according to the adjustable signal. The driving tuning circuit is used to automatically configure a 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, wherein the alternating electromagnetic field excitation acts on the target object, and the coil is spaced apart from the target object.

In one embodiment, the drive tuning circuit includes a drive module and a tuning module, wherein 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, and the tuning module is used to convert the adjustable signal into a drive signal according to the first control signal. The signal automatically configures the tuning link of the drive signal output, and the drive signal of the tuning link drives the coil to generate a corresponding alternating electromagnetic field.

In one embodiment, the tuning module at least includes a multiplexing switch and tunable units in each tuning link, the driving module is electrically connected to one end of each tunable unit via the multiplexing switch, and the other end of each tunable unit is electrically connected to different taps of the coil, and the number of turns of the coil corresponding to different taps is different;

The multiplexer switch is used for selecting the tuning link, and the tunable unit is used for adjusting the frequency resonance point corresponding to the coil.

In one embodiment, the drive tuning circuit also includes an 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 according to the phase difference between the drive current and the drive voltage. The tuning module is also used to adjust the tunable unit according to the second control signal to adjust the transmission efficiency of the coil.

In one embodiment, the signal control circuit is further used to perform circuit monitoring and protection based on the driving current and driving voltage.

In one embodiment, the signal control circuit includes a micro-control unit, a digital signal synthesis module, an attenuator module, and an amplification and filtering module. The micro-control 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 driving tuning circuit via the amplification and filtering module.

The micro-control unit is used to control the signal frequency and signal type of the signal generated by the digital signal synthesis module according to the external control instructions, and to control the attenuation multiple 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.

In one of the embodiments, the signal control circuit further includes a communication module electrically connected to the micro-control unit, and configured to communicate with an external host computer to obtain control instructions.

The present application also provides a non-contact electromagnetic field excitation method, comprising the following steps:

Get control instructions;

Generate an adjustable signal corresponding to the signal frequency and signal type according to the control instruction, and generate a corresponding first control signal according to the adjustable signal;

A tuning link corresponding to the adjustable signal is automatically configured according to the first control signal, and the coil is driven to generate a corresponding alternating electromagnetic field through the tuning link according to the adjustable signal.

The present application also 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 the coil is arranged on a 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 head-mounted body, a belt-type body, a backpack-type body, or a clothing-type body.

In one embodiment, a temperature sensor electrically connected to the signal control circuit is also included, wherein the temperature sensor is arranged at a position corresponding to the coil in the wearable body and is used to detect the working 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.

In one embodiment, the non-contact electromagnetic field excitation device is provided with a plurality of coils, and the plurality of coils are laid flat and/or stacked, wherein the coils are rectangular or circular.

In one embodiment, the coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is fixed to the wearable body via an insulated braided wire or Velcro or a pocket.

The present application also provides a physical therapy platform, including a fixed platform and a non-contact electromagnetic field excitation device as described in any one of the above embodiments, wherein the coil is arranged on a side of the fixed platform close to the target object, and the coil and the target object are spaced apart.

The details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to better describe and illustrate the embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more drawings. The additional details or examples used to describe the drawings should not be considered as limiting the scope of the disclosed inventions, the embodiments and/or examples currently described, and any of the best modes of these inventions currently understood.

FIG. 1 is a structural block diagram of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 2 is a schematic diagram of an electromagnetic field of a non-contact electromagnetic field excitation device in one embodiment.

FIG3 is a diagram of a micro-control unit and a power supply circuit of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 4 is a circuit diagram of a digital signal synthesis module of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 5 is a circuit diagram of an attenuator module of a non-contact electromagnetic field excitation device in one embodiment.

FIG6 is a circuit diagram of an amplifying and filtering module of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 7 is a circuit diagram of a driving module of a non-contact electromagnetic field excitation device in one embodiment.

FIG8 is a circuit diagram of a tuning module of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 9 is a circuit diagram of a collection module of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 10 is a coil circuit diagram of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 11 is a diagram showing multiple resonance points of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 12 is a diagram showing test results of a non-contact electromagnetic field excitation device in one embodiment.

FIG. 13 is an overall flow chart of a non-contact electromagnetic field excitation method in one embodiment.

FIG. 14 is a structural diagram of a wearable device in one embodiment.

15 to 19 are structural diagrams of the wearable body in some embodiments.

FIG. 20 is a flattened structural diagram of multiple coils in a wearable device in one embodiment.

FIG. 21 is a diagram of a stacked structure of multiple coils in a wearable device in one embodiment.

FIG. 22 is a schematic diagram of the structure of a physical therapy platform in one embodiment.

Explanation of the accompanying drawings: 1. target object; 2. tumor cell; 3. host computer; 100. non-contact electromagnetic field excitation device; 10. coil; 20. signal control circuit; 21. micro-control unit; 22. digital signal synthesis module; 23. attenuator module; 24. amplification and filtering module; 25. communication module; 30. drive tuning circuit; 301. tuning link; 31. drive module; 32. tuning module; 321. multiplexing switch; 322. tunable unit; 33. acquisition module; 200. wearable device; 40. wearable body; 50. temperature sensor; 300. physical therapy platform; 310. fixed platform; 1000. non-contact electromagnetic field excitation method.

Detailed ways

In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

It can be understood that the terms "first", "second", etc. used in this application can be used in this article to describe various names of the same concept, but these names are not limited by these terms. These terms are only used to distinguish the first name from another name.

It should be noted that when an 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 intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.

When used herein, the singular forms "a", "an", and "said/the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include/comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

In one embodiment, as shown in FIG. 1 , a non-contact electromagnetic field excitation device 100 is provided, comprising: a signal control circuit 20, a drive tuning circuit 30 and a coil 10, wherein the signal control circuit 20 is electrically connected to the coil 10 via the drive tuning circuit 30, and the drive tuning circuit 30 is provided with a plurality of tuning links 301 for adjusting different frequency resonance points of the coil;

The signal control circuit 20 is used to control the generation of adjustable signal corresponding to the signal frequency and signal type according to the external control instruction. signal, and generates a corresponding first control signal according to the adjustable signal, the driving tuning circuit 30 is used to automatically configure the tuning link 301 corresponding to the adjustable signal according to the first control signal, and drive the coil to generate a corresponding alternating electromagnetic field through the tuning link 301 according to the adjustable signal, wherein the alternating electromagnetic field excitation acts on the target object, and the coil is spaced apart from the target object.

Specifically, the signal control circuit receives external control instructions to control the generation of an adjustable signal corresponding to the signal frequency and signal type, wherein the signal control circuit generates the adjustable signal by signal modulation, and the adjustable signal 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 frequency, signal type, and signal strength of the signal. 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, and specifically generates a corresponding first control signal according to the adjustable signal to realize the relevant control of the drive tuning circuit.

Specifically, the driving tuning circuit drives the coil to generate an alternating electromagnetic field through the control of an adjustable signal, wherein the driving tuning circuit selects the tuning link of its driving output according to the first control signal corresponding to the adjustable signal, the output end of each tuning link is connected to the coil, and the tuning link transmits the alternating current signal driven by the driving tuning circuit to the coil to drive the coil to generate an alternating electromagnetic field, wherein the frequency resonance points of the coils corresponding to different tuning links are different, and 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 the purpose of antenna tuning through the tunable unit therein, and 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, so that the frequency band of the entire coil covers the required range, and further, the tunable unit can be a device such as an adjustable capacitor.

In some embodiments, the coil can be a planar coil, and the shape of the planar coil can be circular, oval, square, or rectangular, so as to be similar to the shape of the treatment part of the target object. At the same time, the number of coils can be one or more, and multiple coils can be arranged side by side or opposite to each other to fully cover the part that needs treatment. Referring to FIG. 2 , the generated alternating electromagnetic field acts on the tumor cells 2 of the target object 1, and the target object 1 can be various parts of the body. The coil 10 fits the target object 1 and maintains a certain distance between the target object 1, and the two are very close to each other to ensure the best electromagnetic field effect, which can be separated by some insulating materials.

The above-mentioned non-contact electromagnetic field excitation device, on the one hand, can form multiple resonance points on the same coil through the driving output of multiple different tuning links, thereby covering a wider frequency band and having a wider range of applications. Especially in the case of driving output such as sweeping frequency and variable frequency, it can ensure that the transmission efficiency of the coil is always maintained above the required efficiency, thereby ensuring the excitation effect and further improving the energy efficiency. Moreover, the corresponding resonant frequency can be independently adjusted through each tuning link, and the range of the frequency band can be accurately adjusted by adjusting each resonance point, further improving the scope of application. On the other hand, the coil fits the target object well and maintains a certain distance from the target object, without the risk of infection and rupture, and is comfortable and easy to use. The coil fits the shape of the treatment part of the target object, and can achieve the best treatment effect. At the same time, through The control drive circuit electrically connected to the coil can conveniently control the electromagnetic field generated by the coil, thereby achieving various required modes of physical therapy needs, with simple operation and good effects.

In one embodiment, referring to FIG. 1 , the signal control circuit 20 includes a micro-control unit 21, a digital signal synthesis module 22, an attenuator module 23, and an amplifying and filtering module 24. The micro-control 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. The attenuator module 23 is electrically connected to the driving tuning circuit 30 via the amplifying and filtering module 24. The micro-control 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 an external control instruction, and to control the attenuation multiple of the attenuator module 23. The amplifying and filtering module 24 is used to amplify and filter the signal generated by the digital signal synthesis module 22 and outputted through the attenuator module 23 to obtain an adjustable signal.

Specifically, referring to Figure 3, the micro-control unit can be implemented using a micro-control chip, or other control circuits, such as a CPU, and powered by a power chip. The micro-control unit communicates with an external host computer 3 to obtain control instructions, parses the control instructions, and obtains corresponding configuration data. The configuration data includes but is not limited to configuration information of a data signal synthesis module and an attenuator module. Based on the configuration data, the digital signal synthesis module and the attenuator module are controlled to achieve control of the adjustable signal.

Specifically, referring to FIG4 , the digital signal synthesis module can be implemented by a digital signal synthesis chip, or other signal generators can be used. For example, a signal generator is composed of a reference oscillator, a frequency synthesis module, a modulation module, a level control module, etc., wherein the required signal is generated by receiving the configuration information of the micro-control unit through the 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 output forms corresponding to the signal include a fixed frequency mode and a swept frequency mode. The fixed frequency mode is a fixed frequency output, and the swept frequency mode is a variable frequency output. Through 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.

Specifically, referring to FIG. 5 and FIG. 6, the attenuator module can be implemented by an attenuator chip or other attenuators, and the amplifying and filtering module uses an operational amplifier, wherein the attenuator module cooperates with the amplifying and filtering module to realize the signal strength control of the adjustable signal to adjust the electric field strength of the alternating electromagnetic field generated by the coil, the attenuator module receives the configuration information of the micro-control unit, sets the signal attenuation multiple, and the signal output by the digital signal synthesis module is attenuated by the attenuator module, and then amplified by the amplifying and filtering module to obtain the required adjustable signal. In some embodiments, the amplifying and filtering module also includes a filter for signal filtering processing to filter out interference signals in the signal.

In one embodiment, the signal control circuit also includes a communication module 25 electrically connected to the micro-control unit, which is used to communicate with the external host computer 3 to obtain control instructions. The communication module 25 can be based on wired communication, such as serial communication, bus communication, etc., or based on wireless communication, such as Bluetooth, WIFI, ZigBee and other wireless communication technologies.

In one embodiment, referring to FIG. 1 , the driving tuning circuit 30 includes a driving module 31 and a tuning module 32. The module 31 is electrically connected to the coil 10 via the tuning module 32. The driving module 31 is used to convert the adjustable signal into a driving signal. The tuning module 32 is used to automatically configure the tuning link 301 for outputting the driving signal according to the signal frequency of the adjustable signal. The driving signal drives the coil 10 to generate an alternating electromagnetic field via the tuning link 301.

Specifically, referring to FIG7 , the driving module at least includes a current driving chip for converting an adjustable signal into a driving signal. The current driving chip generates a corresponding alternating current signal according to the input adjustable signal to drive the coil to generate an alternating electromagnetic field, wherein different adjustable signals have different output alternating current signals, and 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.

Specifically, referring to FIG8 , the tuning module 32 includes at least a multiplexing switch 321 and tunable units 322 in each tuning link 301. The driving module is electrically connected to one end of each tunable unit 322 via the multiplexing switch 321. The other end of each tunable unit 322 is electrically connected to different taps of the coil. Referring to FIG10 , the number of turns of the coil corresponding to different taps is different. Among them, the micro-control unit in the above-mentioned signal control module generates a first control signal according to the output frequency of the adjustable signal to control the multiplexing switch to select the tuning link 301 corresponding to the adjustable signal, that is, the tuning link 301 of the drive signal output, so as to achieve the matching of the frequency of the adjustable signal with the resonant frequency. At the same time, the signal control module can also control the tunable unit in each tuning link 301 to achieve the adjustment of the frequency resonance point corresponding to the coil, and adjust the corresponding number of coil turns through different taps connected to the tuning link 301 to achieve the adjustment of the frequency resonance point corresponding to the coil, that is, adjust the number of coil turns to achieve the coarse adjustment function of the frequency resonance point, set the tunable unit to achieve the fine adjustment function of the frequency resonance point, and the two cooperate to achieve the precise adjustment of the frequency resonance point of the coil. Referring to Figure 11, multiple resonance points of the coil are formed by adjusting multiple tuning links 301, and each resonance point can be adjusted by the corresponding tunable unit, so that the coverage of a wide range of frequency bands is achieved, ensuring that the transmission efficiency of the coil under the covered frequency band is maximized.

In one embodiment, referring to FIG. 1 and FIG. 9 , the drive tuning circuit 30 further includes an acquisition module 33 for acquiring the drive current and the drive voltage output by the drive signal. The signal control circuit 20 is further used to generate a second control signal according to the phase difference between the drive current and the drive voltage. The tuning module 32 is further used to adjust the tunable unit according to the second control signal to adjust the transmission efficiency of the coil.

Specifically, the micro-control unit in the signal control circuit obtains the driving signal output by the acquisition module, the driving current and driving voltage, and configures each tunable unit through the second control signal, so that the phase difference between the driving current and the driving voltage tends to 0 or reaches the preset requirement, so that the transmission efficiency of the coil is maximized or reaches the preset requirement. Referring to Figure 9, this embodiment collects current and voltage through a sampling resistor, and identifies the phase difference between the driving current and the driving voltage through a phase detector, so that the micro-control unit can adjust the transmission efficiency, so that the transmission efficiency of the coil is maximized or reaches the preset requirement.

In some embodiments, the micro-control unit in the signal control circuit can also perform circuit monitoring based on the driving current and driving voltage, and connect the output status of the driving tuning circuit. When abnormal conditions such as short circuit and overvoltage occur, the output of the driving tuning circuit is stopped in time through the control of the micro-control unit to achieve the purpose of circuit protection.

In one embodiment, the coil is disposed on a PCB substrate (Process Control Block) or an FPC substrate (Flexible Printed Circuit). The PCB substrate is a rigid substrate suitable for the flat body surface of the target object, and 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 two ways to better fit the body surface of the target object, thereby fully covering the area requiring physical therapy.

This embodiment is now described in detail in conjunction with a specific circuit, but is not limited thereto.

3 to 10 , in this embodiment, a microcontroller unit (MCU) controls a digital signal synthesis module (DDS: Data Distribution Service) to generate a signal A of a required frequency, which may be a sine wave, square wave or other signal. Signal A passes through an attenuator module to obtain a signal B, which is then amplified by an amplifying and filtering module to generate an adjustable signal C. The adjustable signal C is input to a driving module to generate a driving signal D. At the same time, the microcontroller unit controls a multiplexer switch in a tuning module to select a tuning link 301 corresponding to a matching resonant frequency according to the frequency of the adjustable signal. The driving signal D passes through the tuning link 301 automatically selected in the tuning module to drive the coil to generate an alternating electromagnetic field.

In the specific circuit, referring to Figures 3 to 10, the host computer 3 configures the micro-control unit MCU through the Bluetooth communication module 25. The micro-control unit MCU configures the digital signal synthesis module through the MCU_SPI signal of the SPI pin according to the configuration data. The micro-control unit configures the attenuation multiple of the attenuator module through the CONTROL[0...6] signal of the GPIO pin. The digital signal synthesis module generates a sine wave A of the corresponding frequency at the IOUTB end, and the signal A is input to RF1 of the signal digital attenuator module. The attenuated signal B is output from RF2. The signal B is amplified by the operational amplifier of the amplification and filtering module to generate a signal C. The signal C is input to the current driving chip from the INP interface to generate a driving signal D and output from the OUT pin to the tuning module. The micro-control unit controls the multiplexing switch to select the tuning link 301S1~S4 of the output of the driving signal D through the MCU_SWITCH_EN and MCU_SWITCH_CTR[0...3] signals of the GPIO pin. The driving signal D is input to the tap corresponding to the coil through the selected tuning link 301, thereby driving the coil to generate an alternating electromagnetic field. At the same time, the acquisition module collects the voltage and current signals of the driving signal D, identifies the phase difference between the two through the phase detector, and feeds back to the micro-control unit through the MCU_VPHS signal. The micro-control unit adjusts the size of the capacitor through the CTR[0…3] of the GPIO interface, thereby maximizing the transmission efficiency of the coil or reaching the preset requirements.

This embodiment is now described in detail in conjunction with the test results, but is not limited thereto.

The device of this embodiment can control the output of an alternating electromagnetic field with a frequency of 0.1kHz to 1MHz and an electric field strength of 0.1V/cm to 10V/cm. Through testing and analysis, the output waveforms can include: sine wave, square wave, triangle wave, etc., and the alternating electromagnetic field with a sweep frequency of 10kHz to 1MHz, a step frequency of 10kHz, and an electric field strength of 1V/cm is used to act on tumor cells. The changes in the tumor cells are shown in Figure 12. As can be seen from the figure, the OD values of the two groups of tumor cells, group AB, before placement are both 1.0. After 48 hours, the OD value of the tumor cells in group A, which has not been subjected to the electric field strength of this method, is about 1.3, and the OD value of the tumor cells in group B after the above-mentioned electromagnetic field sweep frequency action is 0.9, which shows that the device of this embodiment is effective for the separation of tumor cells. It has an inhibitory effect on cracking and diffusion.

Based on the same inventive concept, the embodiment of the present application also provides a non-contact electromagnetic field excitation method 1000 for realizing the non-contact electromagnetic field excitation device 100 involved above. The implementation scheme for solving the problem provided by the method is similar to the implementation scheme recorded in the above-mentioned device, so the specific limitations in one or more embodiments of the non-contact electromagnetic field excitation method 1000 provided below can refer to the limitations of the non-contact electromagnetic field excitation device 100 above, and will not be repeated here.

In one embodiment, as shown in FIG. 13 , a non-contact electromagnetic field excitation method 1000 is provided, comprising the following steps:

S100: Obtain control instructions;

S200: generating an adjustable signal corresponding to a signal frequency and a signal type according to a control instruction, and generating a corresponding first control signal according to the adjustable signal;

S300: automatically configuring a tuning link 301 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 301 according to the adjustable signal.

In one embodiment, automatically configuring a tuning link 301 corresponding to an adjustable signal according to a first control signal, and driving a coil to generate a corresponding alternating electromagnetic field through the tuning link 301 according to the adjustable signal includes: a driving module converting the adjustable signal into a driving signal, a tuning module automatically configuring a tuning link 301 outputting a driving signal according to the first control signal, and driving the coil to generate a corresponding alternating electromagnetic field through the driving signal of the tuning link 301.

In one embodiment, the method further includes: collecting the driving current and driving voltage output by the driving signal, the signal control circuit generates a second control signal according to the phase difference between the driving current and the driving voltage, and the tuning module adjusts the tunable unit according to the second control signal to adjust the transmission efficiency of the coil.

In one embodiment, the signal control circuit also performs circuit monitoring and protection based on the driving current and the driving voltage.

In one embodiment, generating an adjustable signal corresponding to a signal frequency and a signal type according to a control instruction includes: a micro-control unit controls a digital signal synthesis module to generate a signal frequency and a signal type according to an external control instruction, and controls an attenuation multiple of an attenuator module; an amplifying and filtering module performs amplification filtering and signal filtering on the signal generated by the digital signal synthesis module and outputted by the attenuator module to obtain an adjustable signal.

In one embodiment, as shown in FIG14 , a wearable device 200 is provided, comprising: a wearable body 40, and a non-contact electromagnetic field excitation device 100 as in any of the above embodiments, wherein the coil 10 is arranged on the side of the wearable body 40 close to the target object, and the coil 10 is arranged at an interval between the target object. In some embodiments, referring to FIG15 to FIG19 , the wearable body is a head-mounted body or a belt-mounted body or a backpack-mounted body or a clothing-mounted body, the head-mounted body can be a hat-type, a headband-type, etc., the belt-type body can be a belt-type, etc., the backpack-type body can be a diagonal-type, a shoulder-type, etc., and the clothing-type body can be an underwear-type, an outerwear-type, a scarf-type, etc.

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

Specifically, the coil can be a coil obtained based on an ordinary winding method, for example, winding with silk-wrapped wire, winding with enameled wire, winding silk-wrapped wire on a ferrite magnetic sheet, etc. The coil can also be a coil obtained based on a printed circuit board manufacturing process (PCB) or a flexible circuit board manufacturing process (FPC). The coil can also be a coil obtained based on a weaving process, for example, the conductive wire (silk-wrapped wire, enameled wire) is woven into wearable clothing according to a coil arrangement method using a weaving process to improve the comfort of the wearable clothing.

In one embodiment, referring to Figure 14, it also includes a temperature sensor 50 electrically connected to the signal control circuit 20, wherein the temperature sensor 50 is arranged at a position corresponding to the coil 10 in the wearable body 40, and is used to detect the working temperature of the coil 10. The signal control circuit 20 is also used to adjust the adjustable signal according to the working temperature or turn off the output of the adjustable signal.

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. When the coil temperature is too high, the signal control circuit in the non-contact electromagnetic field excitation device 100 can adjust the output of the adjustable signal to reduce the output power of the driving tuning circuit, or can also turn off the output of the adjustable signal to stop the output of the driving tuning circuit, thereby ensuring the safety and comfort of wearing.

In one embodiment, referring to FIG. 20 and FIG. 21 , the non-contact electromagnetic field excitation device 100 includes a plurality of coils, and the plurality of coils are laid out and/or stacked.

Specifically, the coils can be connected in series or in parallel. Referring to FIG20 , any two coils can be laid flat to obtain a larger electromagnetic field area, so that they can act on a larger part. Referring to FIG21 , any two coils can also be stacked to obtain a greater electromagnetic field intensity, so that they can act on a deeper part. Furthermore, the above two methods can be combined with each other according to actual needs to obtain an electromagnetic field with a larger area and stronger intensity.

In one embodiment, the coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is fixed to the wearable body via an insulated braided wire or Velcro or a pocket.

Specifically, a plug-in interface is used between the coil and the drive tuning circuit, which can facilitate the replacement of different coils and facilitate the realization of the non-contact electromagnetic field excitation device 100 with multiple uses. The coil can be fixed on the wearable body by means of insulated braided wire, Velcro, pocket type, etc. Among them, the braiding method uses an insulated braided wire to fix the coil on the wearable clothing. This method can make the coil fit closely with the wearable clothing and integrate with the wearable body without obvious abruptness, and it is not easy to fall off. The Velcro method is to attach Velcro (LOOP) to the back of the coil, so as to fix it to the Velcro (HOOK) position corresponding to the wearable body. This method can be disassembled, relatively convenient and simple to use, and also convenient for cleaning the wearable body. The pocket fixing method is to sew a pocket matching the coil on the corresponding position of the wearable clothing to place and fix the coil. This method fixes the relative position and is not easy to fall off.

For other specific limitations on the wearable device 200 , please refer to the above limitations on the non-contact electromagnetic field excitation device 100 , which will not be repeated here.

Referring to Fig. 22, in one embodiment, a physical therapy platform 300 is provided, including a fixed platform 310, and a non-contact electromagnetic field excitation device 100 as in any of the above embodiments, wherein the coil is arranged on a side of the fixed platform 310 close to the target object, and the coil and the target object are arranged at intervals. In some embodiments, the fixed platform 310 can be a structure for lying down, such as a bed structure, and the fixed platform 310 can also provide a structure for sitting or lying down, such as a reclining chair structure, and so on.

For the specific definition of the physiotherapy platform 300, please refer to the definition of the non-contact electromagnetic field excitation device 100 above, which will not be repeated here.

The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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.

The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims (13)

A non-contact electromagnetic field excitation device, characterized in that it comprises: a signal control circuit, a drive tuning circuit and a coil, wherein the signal control circuit is electrically connected to the coil via the drive tuning circuit, and 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 to control the generation of an adjustable signal of corresponding signal frequency and signal type according to an external control instruction, 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 drive the coil to generate a corresponding alternating electromagnetic field through the tuning link according to the adjustable signal, wherein the alternating electromagnetic field excitation acts on a target object, and the coil is spaced apart from the target object. The device according to claim 1, wherein the drive tuning circuit comprises 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 the corresponding alternating electromagnetic field via the drive signal of the tuning link. The device according to claim 2, wherein the tuning module comprises at least a multiplexing switch 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 multiplexing switch, and the other end of each of the tunable units is electrically connected to different taps of the coil, and the number of turns of the coil corresponding to different taps is different; The multiplexer switch is used for selecting the tuning link, and the tunable unit is used for adjusting the frequency resonance point corresponding to the coil. The device according to claim 2, wherein the drive tuning circuit further includes an acquisition module for acquiring a drive current and a drive voltage output by the drive signal, the signal control circuit is further used to generate a second control signal according to a phase difference between the drive current and the drive voltage, and the tuning module is further used to adjust the tunable unit according to the second control signal to adjust the transmission efficiency of the coil. The device according to claim 4, wherein the signal control circuit is further used to perform circuit monitoring and protection based on the drive current and the drive voltage. The device according to any one of claims 1 to 5, wherein the signal control circuit comprises a micro-control unit, a digital signal synthesis module, an attenuator module, and an amplification and filtering module, the micro-control 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; The microcontrol unit is used to control the signal frequency of the signal generated by the digital signal synthesis module according to the external control instruction. 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. The device according to claim 6, wherein the signal control circuit further comprises a communication module electrically connected to the micro-control unit, and configured to communicate with an external host computer to obtain control instructions. A non-contact electromagnetic field excitation method, characterized in that it comprises the following steps: Get control instructions; Generate an adjustable signal corresponding to the signal frequency and signal type according to the control instruction, and generate a corresponding first control signal according to the adjustable signal; A tuning link corresponding to the adjustable signal is automatically configured according to the first control signal, and a coil is driven to generate a corresponding alternating electromagnetic field through the tuning link according to the adjustable signal. A wearable device, characterized in that it includes a wearable body and a non-contact electromagnetic field excitation device as described in any one of claims 1 to 7, wherein the coil is arranged on a side of the wearable body close to a target object, and the coil and the target object are spaced apart, and the wearable body is a head-mounted body, a belt-type body, a backpack-type body, or a clothing-type body. The wearable device according to claim 9, further comprising a temperature sensor electrically connected to the signal control circuit, wherein the temperature sensor is arranged at a position corresponding to the coil in the wearable body, and is used to detect the operating temperature of the coil, and the signal control circuit is also used to adjust the adjustable signal according to the operating temperature or turn off the output of the adjustable signal. The wearable device according to claim 9, wherein the non-contact electromagnetic field excitation device is provided with a plurality of coils, and the plurality of coils are laid flat and/or stacked. The wearable device according to any one of claims 9 to 11, wherein the coil is electrically connected to the drive tuning circuit via a plug-in interface, and the coil is fixed to the wearable body via an insulated braided wire or Velcro or a pocket. A physiotherapy platform, characterized in that it includes a fixed platform and a non-contact electromagnetic field excitation device as described in any one of claims 1 to 7, wherein the coil is arranged on a side of the fixed platform close to the target object, and the coil is spaced apart from the target object.