CN116667869A - Communication device based on flexible magnet and preparation method of flexible magnet - Google Patents

Abstract

The disclosure provides a communication device based on a flexible magnet and a preparation method of the flexible magnet, wherein the device comprises: a flexible magnet for movement to generate a varying magnetic field; the magnetic sensing module is used for detecting the changing magnetic field to obtain a signal to be detected; the signal processing module is used for analyzing the waveform of the signal to be detected so as to judge the action of the flexible magnet; the flexible magnet is arranged on the face of the user, and the magnetic sensing module is arranged on the first bracket which is fixed relative to the face of the user. The device of the present disclosure can be applied to covert communication by generating a changing magnetic field by a flexible magnet provided on the face of a user, for example, magnetic hair, along with the movement of the face part, detecting the changing magnetic field, and analyzing the waveform of the changing magnetic field to determine the action of the face part.

Description

Communication device based on flexible magnet and preparation method of flexible magnet

technical field

The present disclosure relates to the technical field of wearable smart devices, in particular to a flexible magnet-based communication device and a preparation method of the flexible magnet.

Background technique

Blink detection and communication is a technology that communicates with the outside world by detecting blinking movements. It is mainly suitable for occasions where it is not convenient to use hands and voice, or people who cannot use hands and voice. Blink detection and communication techniques have many applications, such as barrier-free human-computer interaction, covert communication, medical diagnosis, etc. Existing technical solutions can be roughly divided into two categories: computer vision-based solutions and EEG-based solutions.

The computer vision-based solution captures images of human eyes through cameras or infrared detectors, and then uses artificial intelligence algorithms to analyze the images of human eyes. Since the camera or infrared detector must be exposed to receive optical signals, the concealment is poor and it is difficult to be used in covert communication occasions. Moreover, the shooting of optical images is easily affected by ambient light conditions, and the accuracy of judgment will be greatly reduced in dark environments, making it difficult to work in special environments such as darkness.

The solution based on EEG is to collect the EEG signals of the human head through electrodes, and then use signal processing algorithms to extract features related to eye blinking. Due to the need to attach multiple electrodes to the head to collect EEG signals, there are high requirements for the tightness of the attachment, and it is difficult to integrate into wearable devices such as smart glasses. And this solution is susceptible to signal interference caused by other facial movements.

Contents of the invention

(1) Technical problems to be solved

In view of the existing technical problems, the present disclosure provides a flexible magnet-based communication device and a method for preparing the flexible magnet, which are used to at least partly solve the above technical problems.

(2) Technical solution

The present disclosure provides a communication device based on a flexible magnet, including: a flexible magnet, which is used to move to generate a changing magnetic field; a magnetic sensing module, which is used to detect a changing magnetic field, and obtain a signal to be tested; a signal processing module, which is used to analyze the signal to be tested to judge the action of the flexible magnet; wherein, the flexible magnet is arranged on the user's face, and the magnetic sensing module is arranged on the first support which is fixed relative to the user's face.

Optionally, the flexible magnet includes: a composite material of a magnetic material and a flexible material, and a superimposition of the composite material and a second support; wherein the magnetic material includes a simple substance, an oxide materials and alloys; flexible materials include polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, Ecoflex, latex, silicone, and hydrogel; The second support includes natural fibers, man-made fibers and animal hair.

Optionally, the magnetic sensing module includes: a detection magnetic sensor, for detecting a changing magnetic field and a background magnetic field; a reference magnetic sensor, for detecting a background magnetic field; The sensor is arranged on the second area of the first support, and the distance between the first area and the flexible magnet is smaller than the distance between the second area and the flexible magnet.

Optionally, the detection magnetic sensor and the reference magnetic sensor include: any magnetic effect based on Hall, anisotropic magnetoresistance, giant magnetoresistance, tunneling magnetoresistance, giant magnetoresistance, fluxgate and magnetic induction coil Magnetic sensors and combinations thereof.

Optionally, the signal processing module is used to analyze the waveform of the signal to be measured by any one or more of a threshold method, a waveform matching method and a machine learning algorithm; wherein the threshold method includes a dynamic threshold method.

Optionally, the flexible magnet is arranged on the user's eyebrows or eyelashes; and the signal processing module is used to judge the user's blinking or frowning action.

Optionally, the magnetic sensing module is disposed inside the first bracket.

Optionally, the flexible magnet-based communication device also includes: a basic functional module, including a wireless communication unit, for wirelessly transmitting the signal to be tested to the signal processing module, or outputting an action judgment result; a control unit for controlling the magnetic sensing module and the operation of the wireless communication unit; and the power supply unit, which is used to supply power to the magnetic sensing module, the wireless communication unit and the control unit; and/or the auxiliary function module, including the speaker module, the earpiece module, the GPS positioning module, the attitude sensor module, the light One or more of a sensor module, a temperature sensor module, a touch sensing module, a storage module, and a wireless charging module.

Optionally, the first support is a first smart terminal, and the communication device is used to control the operation of the first smart terminal and/or the second smart terminal; wherein, the second smart terminal is communicatively connected with the first smart terminal.

Another aspect of the present disclosure provides a method for preparing a flexible magnet, including: preparing a mixed solution of a magnetic material and a flexible material; molding the mixed solution through a template provided with holes, or coating the mixed solution on a second support; The template or the second bracket is heated and solidified to obtain an initial flexible magnet; the initial flexible magnet is magnetized to obtain a flexible magnet; wherein, the magnetic material includes any one or more elements of iron, nickel, and cobalt. and alloys; flexible materials include polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, Ecoflex, latex, silicone, and hydrogel; second Scaffolds include natural fibers, man-made fibers, and animal hair.

(3) Beneficial effects

Compared with the prior art, the flexible magnet-based communication device and the preparation method of the flexible magnet provided by the present disclosure have at least the following beneficial effects:

(1) In the communication device of the present disclosure, a flexible magnet installed on the user's face generates a changing magnetic field with the movement of the face part, and then detects the changing magnetic field and analyzes the waveform of the changing magnetic field to determine the movement of the face part . Therefore, the communication device of the present disclosure is a wearable smart device based on magnetic induction, which is insensitive to ambient light and can work in a dark environment.

(2) In the communication device of the present disclosure, the flexible magnet can be magnetic hair, which is placed on the eyebrows or eyelashes of the person, and has good concealment, and the small-volume magnetic sensing module can be set inside the first bracket, which can be applied in covert communication occasions.

(3) In the method for preparing the flexible magnet disclosed in the present disclosure, the flexible magnet can be prepared through two different molding processes. Wherein, the use of the second bracket is environmentally friendly. The composite material technology is adopted, the cost is low, and it is convenient for large-scale production.

Description of drawings

The above and other objects, features and advantages of the present disclosure will be more clearly described through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

FIG. 1 schematically shows a block diagram of a flexible magnet-based communication device according to an embodiment of the present disclosure;

Figure 2A schematically illustrates a physical view of a flexible magnet according to an embodiment of the present disclosure;

FIG. 2B schematically illustrates a life-scale view of a flexible magnet according to an embodiment of the disclosure;

Fig. 3A schematically shows a diagram of a flexible magnet installation location according to an embodiment of the present disclosure;

Fig. 3B schematically shows a diagram of installation positions of flexible magnets according to another embodiment of the present disclosure;

FIG. 4 schematically shows a diagram of installation positions of components such as a magnetic sensing module according to an embodiment of the present disclosure;

FIG. 5 schematically shows a waveform diagram of a signal to be tested according to an embodiment of the present disclosure;

Fig. 6 schematically shows the results of the application of a flexible magnet-based communication device in covert communication according to an embodiment of the present disclosure;

Fig. 7 schematically shows a flowchart of a method for preparing a flexible magnet according to an embodiment of the present disclosure.

[Description of Reference Signs]

1-flexible magnet; 10-glue strip; 2-magnetic sensing module; 21-detection magnetic sensor; 22-reference magnetic sensor; 3-signal processing module; 4-wireless communication unit; 5-control unit; 6-power supply unit ; 7-Auxiliary function module.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. The technical features in the various embodiments exemplified in the description can be freely combined to form a new solution under the premise of no conflict. In addition, each claim can be used as an embodiment alone or the technical features in each claim can be combined as a new solution. and in the drawings, the shape or thickness of the embodiments may be enlarged, and marked for simplification or convenience. Furthermore, elements or implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values within acceptable error margins or design constraints.

Unless there are technical obstacles or contradictions, the above-mentioned various embodiments of the present disclosure can be freely combined to form other embodiments, and these other embodiments are all within the protection scope of the present disclosure.

Although the present disclosure has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present disclosure, and should not be construed as a limitation of the present disclosure. The size ratios in the drawings are only schematic and should not be construed as limiting the present disclosure.

While certain embodiments of the disclosed general inventive concept have been shown and described, those of ordinary skill in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the disclosed general inventive concept. The scope is defined by the claims and their equivalents.

Fig. 1 schematically shows a block diagram of a flexible magnet-based communication device according to an embodiment of the present disclosure.

The present disclosure provides a communication device 100 based on a flexible magnet, as shown in FIG. 1 , for example, including: a flexible magnet 1 for generating a changing magnetic field by movement. The magnetic sensing module 2 is used to detect the changing magnetic field and obtain the signal to be measured. The signal processing module 3 is used to analyze the waveform of the signal to be measured to judge the action of the flexible magnet. Wherein, the flexible magnet 1 is arranged on the user's face, and the magnetic sensing module 2 is arranged on a first support which is fixed relative to the user's face.

According to an embodiment of the present disclosure, the flexible magnet 1 includes, for example: a composite material of a magnetic material and a flexible material, and a superposition of the composite material and a second bracket. Wherein, the magnetic material includes simple substance, oxide and alloy containing any one or more elements of iron, nickel and cobalt. Flexible materials include polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, Ecoflex, latex, silicone, and hydrogel. The second support includes natural fibers, man-made fibers and animal hair.

FIG. 2A schematically shows a structural diagram of a flexible magnet according to an embodiment of the present disclosure. FIG. 2B schematically illustrates a dimensional drawing of a flexible magnet according to an embodiment of the disclosure.

For example, the flexible magnet 1 is magnetic hair, which can be artificial false hair. As shown in FIG. 2A , when the flexible magnet is artificial hair, it can be a composite material of magnetic material and flexible material. Wherein, the magnetic material is, for example, magnetic particle NdFeB with a diameter of micron scale, and the flexible material is polydimethylsiloxane (Polydimethylsiloxane, PDMS). The mixed solution of the two is heated and solidified and magnetized to obtain a cilia array (flexible magnet). As shown in FIG. 2B , observed and measured by an optical microscope, the size of the artificial wig of the present disclosure can reach, for example, a diameter of 120.034 μm, which is very close to the size of real human eyelashes or eyebrows. The prepared composite material flexible magnet 1 can be installed in false eyelashes, which is convenient for users to wear.

It can be understood that the magnetic material can also be other magnetic substances including iron, nickel, cobalt and other magnetic elements, such as simple substances, oxides and alloys, or a combination thereof. The flexible material can also be any other material or combination of materials that has elasticity and plasticity, does not cause damage to eyes, and can be loaded with magnetic substances. Examples: Polyethylene Terephthalate (PET), Polyethylene (PE), Polyurethane (PU), Polyimide (PI), Polyvinyl Alcohol (PVA), Ecoflex, Latex, Silicone, Hydrogel .

Alternatively, the flexible magnet can also be artificial wigs attached with magnetic substances, wherein the artificial wigs can be natural fibers or artificial fibers, natural fibers such as cotton, silk, etc., artificial fibers such as nylon, polyester, etc. When the flexible magnet is artificial hair attached with magnetic substances, the above mixed solution can be coated on the artificial hair, and then heated, solidified and magnetized to obtain the flexible magnet.

Alternatively, the flexible magnet can also be natural hair, including human or other animal hair, to which magnetic substances are attached. When the flexible magnet is natural hair attached with a magnetic substance, the above-mentioned mixed solution can be coated on the natural hair, and then heated, solidified and magnetized to obtain a flexible magnet.

It should be noted that, in order to ensure the safety of users, even if human hair is used, the flexible magnet needs to be processed in an isolated state before being bonded to the human body.

According to an embodiment of the present disclosure, the magnetic sensing module 2 includes, for example: a detection magnetic sensor 21 for detecting a changing magnetic field and a background magnetic field. Reference is made to the magnetic sensor 22 for detecting the background magnetic field. Wherein, the detection magnetic sensor 21 is arranged in the first area of the first support, and the reference magnetic sensor 22 is arranged in the second area of the first support, and the distance between the first area and the flexible magnet is smaller than the distance between the second area and the flexible magnet.

According to an embodiment of the present disclosure, the flexible magnet 1 is disposed, for example, on the user's eyebrows or eyelashes, and the signal processing module 3 is used to judge the user's blinking or frowning motion.

Fig. 3A schematically shows a diagram of a flexible magnet installation location according to an embodiment of the present disclosure. Fig. 3B schematically shows a diagram of installation positions of flexible magnets according to another embodiment of the present disclosure. Fig. 4 schematically shows an installation location diagram of components such as a magnetic sensing module according to an embodiment of the present disclosure.

For example, as shown in FIG. 3A , the flexible magnet 1 can be glued to the eyebrows on the left and right sides of a person through glue strips 10 . The first bracket may be a head wearable smart device integrated with multiple magnetic sensors, such as glasses. As shown in FIG. 4 , a detection magnetic sensor 21 can be respectively arranged on the left and right sides of the upper side of the mirror frame, and a reference magnetic sensor 22 can be respectively arranged on the left and right sides of the lower side of the mirror frame. At this time, it is possible to detect, for example, frowning motions of single eyebrows and double eyebrows.

It can be understood that the reference magnetic sensor 22 is set to measure the background magnetic field or disturbing magnetic field in the environment, such as the earth's magnetic field, and can also be installed on the temples and other positions farther away from the eyebrows. The detection magnetic sensor 21 can be installed in any position of the frame where the magnetic hair magnetic field change can be detected, and the reference magnetic sensor 22 can be installed in any position of the frame where the magnetic hair magnetic field change cannot be detected or the magnetic field of the detected magnetic hair is less than a certain intensity position.

Alternatively, as shown in FIG. 3B , for example, the flexible magnet 1 can also be bonded to the eyelashes of a person through an adhesive strip 10 . The flexible magnet 1 can be set on the eyelashes of one side, for example, the eyelashes of the left eye are provided with the flexible magnet 1, and the detection magnetic sensor 21 is installed on the upper or lower side of the left side of the frame, and the upper or lower side of the right side of the frame. A reference magnetic sensor 22 is mounted sideways. The flexible magnets 1 can also be arranged on the eyelashes of both eyes, and the detection magnetic sensors 21 are respectively arranged on the upper side and/or the lower side of both sides of the frame, and the reference magnetic sensors 22 are installed on the mirror legs, etc., farther away from the eyebrows. In this case, eg blinking of one or both eyes can be detected. The judgment of blinking can be used to control smart glasses, such as controlling answering and hanging up calls, controlling playing and pausing music, and controlling taking pictures. This control method does not require touch and other operations, which is more convenient and quicker, and this control method can also help people with physical disabilities to achieve barrier-free human-computer interaction.

It can be understood that the numbers of the detection magnetic sensor 21 and the reference magnetic sensor 22 may be the same or different, and may be one or more. Single or multiple magnetic cilia can be directly attached to human eyelashes or commercial false eyelashes, or a film of magnetic powder mixed with a flexible substance and cured can be pasted on the eyelashes, or a combination of magnetic powder and flexible substance can be pasted on the eyelashes. After mixing the solution and then curing, etc., the hair is magnetic. In addition to placing a viscous substance (adhesive strip 10 ) on the human eyebrows or eyelashes and then adhering the magnetic cilia array, it is also possible to place a viscous substance on the cilia array to make the cilia array itself viscous. In addition to sticking the entire array of cilia to the eyebrows or eyelashes, the magnetic cilia can also be pasted to the eyebrows or eyelashes one by one, and the magnetic cilia can also be grafted or implanted into the eyelids or eyebrows of a person.

According to an embodiment of the present disclosure, the detection magnetic sensor 21 and the reference magnetic sensor 22 include, for example: Hall-based, anisotropic magneto-resistance, giant magneto-resistance, tunneling magneto-resistance, giant magneto-impedance, fluxgate, and induction coil, etc. A magnetic sensor with any magnetic effect and its combination. Among them, magnetic sensors based on the Hall effect can be used to detect large magnetic fields. Magnetic sensors based on giant magnetoresistance effect and tunneling magnetoresistance effect can be used to detect small magnetic fields. Magnetic sensors based on the giant magneto-impedance effect require the use of alternating current. Magnetic sensors based on induction coils can be used to detect dynamic magnetic fields. Moreover, the above-mentioned types of magnetic sensors can all be prepared as small-volume magnetic sensors, which can then be installed inside the mirror frame. Hall sensors and magnetoresistive sensors, whose size can be in the millimeter or even micron range, are smaller than camera modules, so they are more suitable for wearable applications such as smart glasses, and the small size also prevents them from blocking the user's line of sight , with higher security.

For example, both the detection magnetic sensor 21 and the reference magnetic sensor 22 are magnetic sensors based on giant magnetoresistance effect.

It can be understood that the detection magnetic sensor 21 and the reference magnetic sensor 22 may also use different types of magnetic sensors or a combination of multiple magnetic sensors.

According to an embodiment of the present disclosure, the signal processing module is used to analyze the waveform of the signal to be tested by using any one or more of threshold method, waveform matching method and machine learning algorithm, for example. Wherein, the threshold method includes a dynamic threshold method.

Fig. 5 schematically shows a waveform diagram of a signal to be tested according to an embodiment of the present disclosure.

For example, the flexible magnet-based communication device of the present disclosure is used to detect blinking of a user. Since flexible magnets, such as magnetic hair, are magnetic, for example, if they are placed on the eyelashes of a person, there will be a magnetic field of a certain strength around the eyes of the person. When blinking moves the magnetic hairs up and down, the size and direction of the magnetic field around the eye also changes. For example, wearing smart glasses with magnetic sensors can detect this change with magnetic sensors. By performing data processing on the signal collected by the magnetic sensor, the specific mode of blinking (such as single blink and double blink, light blink and heavy blink, etc.) can be known. When blinking three times, the signal to be tested collected by the magnetic sensing module 2 is shown in FIG. 5 . It can be seen that the eye blink signal is very obvious, and it can be known whether an eye blink has been performed through algorithm processing such as threshold method, waveform matching method, or machine learning. Among them, due to the influence of the geomagnetic field or the movement of the eyeballs with the line of sight, the movement of the flexible magnet 1 will also cause the waveform of the signal to be tested to change, but the range of change in a short period of time is not as large as that of blinking. big. Therefore, the dynamic threshold method can filter out the waveform changes caused by eye movement, which improves the accuracy of blink judgment.

It should be noted that the signal to be measured collected by the magnetic sensing module 2 includes the signals collected by the detection magnetic sensor 21 and the reference magnetic sensor 22, and it is necessary to subtract the waveform of the signal collected by the detection magnetic sensor 21 from the signal collected by the reference magnetic sensor 22. The waveform of the received signal is obtained to obtain the waveform of the signal to be measured caused by eye blinking.

According to an embodiment of the present disclosure, as shown in FIG. 4 , the flexible magnet-based communication device further includes, for example: a basic functional module, including a wireless communication unit 4, which is used to wirelessly transmit the signal to be tested to the signal processing module 3, or output an action judgment result. The control unit 5 is used to control the operation of the magnetic sensing module 2 and the wireless communication unit 4 . And a power supply unit 6 for supplying power to the magnetic sensing module 2 , the wireless communication unit 4 and the control unit 5 . And/or the auxiliary function module 7, for example including one or more of a speaker module, an earpiece module, a GPS positioning module, an attitude sensor module, a light sensor module, a temperature sensor module, a touch sensing module, a storage module, a wireless charging module, etc. .

For example, the signal processing module 3 can be integrated with the control unit 5, and be arranged in the first bracket, at this time, the wireless communication unit 4 can transmit the signal to be tested to the signal processing module 3, and then the signal processing module 3 judges the blink action Afterwards, the judgment result of the blinking action is sent to an external signal receiving terminal through the wireless communication unit 4 . Alternatively, the signal processing module 3 can also be arranged on an external mobile or fixed terminal, and after the magnetic sensing module 2 detects the signal to be tested, the signal to be tested is directly transmitted to the signal processing module on the external terminal through the wireless communication unit 4 3 to analyze and get the action judgment result. According to different blink patterns, the wireless communication unit 4 sends corresponding signals to the outside to realize the communication function. For example, one or more control chips are arranged in the control unit 5 .

For example, the wireless communication unit 4 can be a combination of one or more communication modules such as Bluetooth, WIFI, ZigBee, LoRa based on non-cellular communication, 2G, 3G, 4G, 5G and narrowband Internet of Things based on cellular communication. The power supply unit 6 is a battery or a battery pack.

It can be understood that the wireless communication unit 4 , the control unit 5 and the power supply unit 6 can be arranged at any position on the first support if the technological conditions permit, and can be integrated or installed separately. The wireless communication unit 4, the control unit 5 and the power supply unit 6 can also be concealedly installed inside the first bracket.

For example, the auxiliary function module 7 can be a loudspeaker module for controlling playing sound, or an earpiece module for collecting sound, or a GPS positioning module for locating the user, or an attitude sensor module for sensing The posture of the user, such as standing, sitting or lying, or a light sensor module for sensing light, or a temperature sensor module for sensing temperature, or a touch sensing module for sensing touch operations, or for The storage module is used to store system data and application data, or is a wireless charging module, used to wirelessly charge the power supply unit 6 .

It can be understood that the auxiliary function module 7 can be any one of the above-mentioned speakers and other modules, and can also be an integrated combination of multiple modules. The auxiliary function module 7 can also be concealedly installed inside the first bracket.

According to an embodiment of the present disclosure, the magnetic sensing module 2 is, for example, disposed inside the first bracket.

For example, in order to improve the concealment of the communication device based on flexible magnets, so that it can be applied to covert communication scenarios, both the detection magnetic sensor 21 and the reference magnetic sensor 22 can be installed inside the mirror frame. Because the magnetic hair is located on the eyebrows or eyelashes, it has good concealment and aesthetics. The magnetic sensing module does not need to be exposed outside the frame, but can also be completely encapsulated inside the frame. Moreover, the volume of magnetic sensors based on magnetic effects such as Hall and magneto-resistance can be in the order of millimeters or even microns, and packaging them into glasses will not cause a significant increase in volume. Therefore, the present disclosure can realize the function of secretly transmitting signals (such as Morse code) in specific occasions.

Fig. 6 schematically shows the application results of the flexible magnet-based communication device in covert communication according to an embodiment of the present disclosure.

For example, as shown in FIG. 6 , the difference in signal between a single blink and a double blink in a short period of time can be used to convey different information. It can be seen from Fig. 6 that the number of peaks of the signal waveforms of single blink and double blink is different. For example, the digital "1" is represented by a single blink waveform, and the digital "0" is represented by a double blink waveform. Then the test signal can represent that the number to be sent is "10010". For example, it is also possible to use a single blink to represent the symbol ".", a double blink to represent the symbol "-", and a non-blink to represent a space, then the flexible magnet-based communication device of the present disclosure can also be used to send Morse code, namely The waveform shown in Figure 6 can also represent the Morse code ".--.-". Therefore, the flexible magnet-based communication device of the present disclosure has extremely important application value in covert communication.

According to an embodiment of the present disclosure, the flexible magnet-based communication device of the present disclosure may be used, for example, to control the operation of the first smart terminal and/or the second smart terminal. Wherein, the second smart terminal communicates with the first smart terminal.

For example, the first bracket is a first smart terminal, such as smart glasses, etc., and the second smart terminal is one or more other smart terminals that are wirelessly and/or wiredly connected to the first smart terminal, such as smart speakers, smart watches, Mobile phones, tablets, etc.

It can be understood that the operation of the first intelligent terminal can be controlled by blinking, and then the operation of the second intelligent terminal can be controlled by the first intelligent terminal, the operation of the second intelligent terminal can also be directly controlled by blinking, and the second intelligent terminal can also be controlled simultaneously by blinking. Operation of an intelligent terminal and a second intelligent terminal.

Fig. 7 schematically shows a flowchart of a method for preparing a flexible magnet according to an embodiment of the present disclosure.

Another aspect of the present disclosure provides a method for preparing a flexible magnet, as shown in FIG. 7 , for example including:

S710, preparing a mixed solution of the magnetic material and the flexible material. Wherein, the magnetic material includes simple substance, oxide and alloy containing any one or more elements of iron, nickel and cobalt. Flexible materials include polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, Ecoflex, latex, silicone, and hydrogel.

For example, the magnetic particle NdFeB with a diameter of micron is fully mixed with the uncured flexible material PDMS (Polydimethylsiloxane, polydimethylsiloxane) and vacuumized to remove bubbles.

S720, molding the mixed solution through a template provided with holes, or coating the mixed solution on the second support. Wherein, the second support includes natural fiber, artificial fiber and animal hair.

For example, the above-mentioned mixed solution is poured onto an acrylic template with a single row of holes made by laser drilling, and a vacuum is drawn so that the mixed solution fills the holes on the template.

S730, heating and curing the template or the second support to obtain an initial flexible magnet.

For example, the template is cured by heat, and the cured array of cilia in the holes is then peeled away from the template. The heating temperature is, for example, 50°C to 150°C.

S740, magnetizing the initial flexible magnet to obtain a flexible magnet.

For example, magnetizing an array of cilia in a strong magnetic field makes them more magnetic.

To sum up, the embodiments of the present disclosure propose a flexible magnet-based communication device and a method for fabricating the flexible magnet. Through the flexible magnet installed on the user's face, for example, magnetic hair generates a changing magnetic field with the movement of the facial part, and then detects the changing magnetic field and analyzes the waveform of the changing magnetic field to judge the movement of the facial part, which can be used in concealment In communication.

Details not mentioned in the method embodiments are similar to those in the device embodiments, please refer to the device embodiments, and will not be repeated here.

It is understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy.

It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, not Used to limit the protection scope of this disclosure. Throughout the drawings, the same elements are indicated by the same or similar reference numerals. Conventional structures or constructions are omitted when they may obscure the understanding of the present disclosure. And the shape, size, and positional relationship of each component in the figure do not reflect the actual size, proportion and actual positional relationship.

In the foregoing Detailed Description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, the disclosure lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby expressly incorporated into the Detailed Description, with each claim standing on its own as a separate preferred embodiment of this disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Where the term "comprises" is used in the specification or claims, the word is encompassed in a manner similar to the term "comprises" as construed when "comprises" is used as a link in the claims. Any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present disclosure in detail. It should be understood that the above descriptions are only specific embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims (10)

1. A flexible magnet-based communications device, comprising:

a flexible magnet for movement to generate a varying magnetic field;

the magnetic sensing module is used for detecting the changing magnetic field to obtain a signal to be detected;

the signal processing module is used for analyzing the waveform of the signal to be detected so as to judge the action of the flexible magnet;

the flexible magnet is arranged on the face of the user, and the magnetic sensing module is arranged on a first bracket which is fixed relative to the face of the user.

2. The apparatus of claim 1, wherein the flexible magnet comprises:

a composite of a magnetic material and a flexible material, the composite being superimposed with a second scaffold;

wherein the magnetic material comprises a simple substance, an oxide and an alloy containing any one or more elements of iron, nickel and cobalt;

the flexible material comprises polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, ecoflex, latex, silica gel and hydrogel;

the second scaffold includes natural fibers, artificial fibers, and animal hair.

3. The apparatus of claim 1, wherein the magnetic sensing module comprises:

a detection magnetic sensor for detecting the varying magnetic field and the background magnetic field;

a reference magnetic sensor for detecting the background magnetic field;

the detection magnetic sensor is arranged in a first area of the first support, the reference magnetic sensor is arranged in a second area of the first support, and the distance between the first area and the flexible magnet is smaller than that between the second area and the flexible magnet.

4. The apparatus of claim 3, wherein the detection magnetic sensor and the reference magnetic sensor comprise:

magnetic sensors based on any one of hall, anisotropic magnetoresistance, giant magnetoresistance, tunneling magnetoresistance, giant magnetoresistance, fluxgate, and magnetically sensitive coil magnetic effects, and combinations thereof.

5. The apparatus of claim 1, wherein the signal processing module is configured to analyze the waveform of the signal under test using any one or more of a thresholding method, a waveform matching method, and a machine learning algorithm;

wherein the thresholding method comprises a dynamic thresholding method.

6. The device of claim 1, wherein the flexible magnet is disposed at an eyebrow or eyelash of the user; and

the signal processing module is used for judging the blinking action or the eyebrow tattooing action of the user.

7. The device of claim 6, wherein the magnetic sensing module is disposed inside the first bracket.

8. The apparatus as recited in claim 1, further comprising:

the basic function module comprises a wireless communication unit and is used for wirelessly transmitting the signal to be detected to the signal processing module or outputting an action judging result;

the control unit is used for controlling the operation of the magnetic sensing module and the wireless communication unit;

the power supply unit is used for supplying power to the magnetic sensing module, the wireless communication unit and the control unit; and/or

The auxiliary function module comprises one or more of a loudspeaker module, a receiver module, a GPS positioning module, a gesture sensor module, a light sensor module, a temperature sensor module, a touch sensing module, a storage module and a wireless charging module.

9. The device according to any one of claims 1 to 8, wherein the first support is a first intelligent terminal, and the communication device is configured to control operation of the first intelligent terminal and/or a second intelligent terminal;

the second intelligent terminal is in communication connection with the first intelligent terminal.

10. A method of manufacturing a flexible magnet, comprising:

preparing a mixed solution of a magnetic material and a flexible material;

forming the mixed solution through a template provided with holes, or coating the mixed solution on a second bracket;

heating and curing the template or the second bracket to obtain an initial flexible magnet;

magnetizing the initial flexible magnet to obtain the flexible magnet;

wherein the magnetic material comprises a simple substance, an oxide and an alloy containing any one or more elements of iron, nickel and cobalt;

the flexible material comprises polydimethylsiloxane, polyethylene terephthalate, polyethylene, polyurethane, polyimide, polyvinyl alcohol, ecoflex, latex, silica gel and hydrogel;

the second scaffold includes natural fibers, artificial fibers, and animal hair.