Wearable bracelet and preparation method thereof, sign language interaction system

Abstract

The present invention provides a wearable bracelet and its preparation method, and a sign language interaction system, including: preparing a wearable basic part, including a first wearable finger ring, a friction film layer, and a second wearable finger ring connected to each other; forming an ion film electrode layer and a packaging layer on the surface of the friction film layer in sequence, and leading out a wire; the friction film layer, the ion film electrode layer, and the packaging layer have strong stretchability. The friction film layer is in contact with the skin, and the friction between the gradient microstructure and the skin generates a microcurrent, thereby obtaining an accurate finger motion signal; the microcurrent can be accurately derived through the ion film electrode layer; the packaging layer can avoid signal interference caused by the environment, contact, etc., and improve the acquisition accuracy of the finger motion signal; the material of the entire wearable bracelet is flexible and stretchable, and can be adapted to various types of fingers, so that it can be mass-produced and reduce costs, solving the problem of high development cost and poor signal acquisition accuracy of existing wearable gloves.

Description

Technical Field

[0001] The present invention relates to the field of flexible electronic wearable and intelligent interaction technology, and in particular to a wearable bracelet and a preparation method thereof, and a sign language interaction system. Background Art

[0002] Hearing-impaired people usually communicate with each other using sign language, but when healthy people have not learned sign language, communication will be hindered, which will affect the daily life of hearing-impaired people to a certain extent. To solve this problem, sign language translation tools are usually used to translate sign language so that healthy people can "read" sign language.

[0003] Current sign language translation tools rely on computer vision algorithms, which collect sign language videos, perform target acquisition and analysis on them, and then output text or voice expressions of sign language. However, the video image data collected by computer vision algorithms is very large, the calculation algorithm is complex, and the collected information is easily affected by environmental factors (such as background and lighting), resulting in inaccurate sign language translation results.

[0004] With the diversification and intelligence of flexible wearable products, there is an application solution that uses flexible sensing smart gloves to realize sign language translation function, which to a certain extent solves the problems caused by relying on computer vision methods.

[0005] However, currently common wearable gloves are generally implemented by attaching sensors on fabric gloves. In order to ensure the accuracy of signal acquisition, it is usually necessary to customize the wearable gloves according to the size of the wearer's palm and the different joint positions. Therefore, this method is not universal and has high cost. In addition, the sensor devices attached to the fabric substrate are usually hard and not ductile, and have poor fit with the skin, resulting in the inability to accurately track the movement of the fingers, thereby affecting the accuracy of signal acquisition, and further resulting in unsatisfactory accuracy of the sign language translation results. Summary of the invention

[0006] The object of the present invention is to provide a wearable bracelet and a preparation method thereof, and a sign language interaction system to solve the problems of high development cost and poor signal acquisition accuracy of existing wearable gloves.

[0007] In order to solve the above technical problems, the present invention provides a method for preparing a wearable bracelet, comprising: Prepare a wear base member, the wear base member comprising a first wear finger ring, a second wear finger ring and a friction film layer, the first wear finger ring and the second wear finger ring are connected via the friction film layer; An ion film electrode layer is formed on a surface of the friction film layer that is away from the first wearing finger ring and the second wearing finger ring, and a wire is led out; forming an encapsulation layer on the surface of the ion film electrode layer to obtain a wearable wristband; Wherein, the friction film layer, the ion film electrode layer and the packaging layer are all flexible and stretchable.

[0008] Optionally, in the preparation method of the wearable bracelet, the material of the friction film layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution.

[0009] Optionally, in the method for preparing the wearable bracelet, the method for preparing the wearable base member includes: Provide basic parts mold; Prepare base component solution; The base piece solution is poured into a base piece mold and vacuum is applied to remove air bubbles to form a wear base piece.

[0010] Optionally, in the method for preparing the wearable bracelet, the method for forming an ion film electrode layer on a surface of the friction film layer that is away from the first wearable finger ring and the second wearable finger ring, and leading out a wire comprises: Provide electrode mold; Prepare electrode solution; pouring the electrode solution into the electrode mold and leading out the wire to form an ion gel; heating and drying the ion gel to obtain an ion film electrode layer; The ion film electrode layer is taken out from the electrode mold, and attached to a surface of the friction film layer on one side away from the first wearing ring and the second wearing ring.

[0011] Optionally, in the method for preparing the wearable bracelet, when the raw materials of the ion film electrode layer include PVA and phosphoric acid solution, the method for preparing the electrode solution includes: PVA and distilled water are mixed according to a preset weight ratio, and heated and stirred until the PVA is completely dissolved to obtain a PVA solution; The phosphoric acid solution and the PVA solution are uniformly mixed according to a preset weight ratio to obtain an electrode solution, wherein the mass fraction of the phosphoric acid solution is 5% to 30%.

[0012] Optionally, in the method for preparing the wearable bracelet, the method for forming an encapsulation layer on the surface of the ion film electrode layer to obtain the wearable bracelet includes: Prepare encapsulation solution; pouring the encapsulation solution into the base component mold formed with the ion film electrode layer; Vacuuming and heating and drying to form a packaging layer; Remove the wearable bracelet from the base mold.

[0013] In order to solve the above technical problems, the present invention also provides a wearable bracelet, which is manufactured using the preparation method of the wearable bracelet as described in any of the above items, and the wearable bracelet includes a first wearing ring, a second wearing ring and a sensing connector; the sensing connector includes a friction film layer, an ion film electrode layer and a packaging layer stacked in sequence, the friction film layer is close to the first wearing ring and the second wearing ring, and the ion film electrode layer has a wire leading out.

[0014] Optionally, in the wearable bracelet, the friction film layer has a functional area, and a functional microstructure is formed on a side of the functional area close to the first wearable ring and the second wearable ring; the size of the functional microstructure is 0.1~4mm.

[0015] Optionally, in the wearable bracelet, the ion film electrode layer covers the functional area; and the encapsulation layer covers the ion film electrode layer.

[0016] Optionally, in the wearable bracelet, the materials of the first wearable ring, the second wearable ring and the sensing connecting component are all elastic; and the material of the friction film layer is electronegative.

[0017] Optionally, in the wearable bracelet, the material of the friction film layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution.

[0018] Optionally, in the wearable bracelet, the thickness of the friction film layer is 80-120 μm; the thickness of the packaging layer is 80-120 μm.

[0019] Optionally, in the wearable bracelet, the diameter of the first wearable ring is 1.27-1.9 cm; the diameter of the second wearable ring is 1.52-2.1 cm; and a wire is led out from the side of the ion membrane electrode layer close to the second wearable ring.

[0020] In order to solve the above technical problems, the present invention also provides a sign language interaction system, comprising at least one wearable bracelet as described in any one of the above items.

[0021] Optionally, in the sign language interaction system, the sign language interaction system also includes a signal processing module and a sign language recognition module; the signal processing module is used to receive the finger motion signal output by the wearable bracelet through the wire, and filter and denoise the received finger motion signal, amplify the signal and perform analog-to-digital conversion processing to obtain a digital signal; the sign language recognition module is used to analyze and process the digital signal using a pre-trained sign language recognition model to obtain the language expression content corresponding to the digital signal.

[0022] Optionally, in the sign language interaction system, the sign language interaction system also includes an interconnection communication module; the interconnection communication module includes a large language model service, which is used to use the wearable bracelet to communicate intelligently with the system user.

[0023] The wearable wristband and its preparation method and sign language interaction system provided by the present invention include: preparing a wearable basic component, wherein the wearable basic component includes a first wearable finger ring, a second wearable finger ring and a friction film layer, wherein the first wearable finger ring and the second wearable finger ring are connected via the friction film layer; forming an ion film electrode layer on the surface of the friction film layer away from the first wearable finger ring and the second wearable finger ring, and leading out a wire; forming an encapsulation layer on the surface of the ion film electrode layer; wherein the friction film layer, the ion film electrode layer and the encapsulation layer are all flexible and stretchable. By making the friction film layer contact with the skin, microcurrent can be generated through the friction between the skin, and then accurate finger movement signals can be obtained through the microcurrent; at the same time, by successively forming an ion film electrode layer and a packaging layer on the friction film layer, not only can the microcurrent be accurately derived through the ion film electrode layer, but also the signal interference caused by the environment, contact, etc. can be avoided through the packaging layer, thereby improving the acquisition accuracy of the finger motion signal; in addition, the entire wearable bracelet material has strong stretchability and can be adapted to the fingers of all kinds of people, so that it can be mass-produced and reduce costs, solving the problems of high development cost and poor signal acquisition accuracy of existing wearable gloves. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A flowchart of a method for preparing a wearable bracelet provided in this embodiment; Figure 2 A schematic diagram of the structure of the basic component mold provided in this embodiment; Figure 3 A schematic diagram of the structure of the electrode mold provided in this embodiment; Figure 4 A schematic diagram of the structure of a wearable wristband provided in this embodiment; Figure 5 A physical picture of the ion film electrode layer provided in this embodiment; Figure 6 A schematic diagram of wearing a wearable wristband provided in this embodiment; Figure 7 A schematic diagram of the relationship between the degree of finger bending and the signal voltage collected by the wearable wristband provided in this embodiment; Figure 8 A structural block diagram of the sign language interaction system provided in this embodiment; Fig. 9 Schematic diagram of wearing FPC on the back of the hand to collect wearable wristband signals; Fig.10 A comparison diagram of the signal collected by the signal processing module provided in this embodiment and the finger posture and manipulator posture; Fig.11 A schematic diagram of sign language provided for this embodiment; Fig.12 A comparison diagram of various sign languages ​​and finger movement signals provided in this embodiment; Fig.13 A schematic diagram of a confusion matrix for training a sign language recognition algorithm provided in this embodiment; The descriptions of the reference numerals are as follows: 110-first wearable ring; 120-second wearable ring; 130-sensing connector; 131-friction film layer; 1311-functional microstructure; 132-ion film electrode layer; 133-encapsulation layer; 200-base mold; 201-first side; 202-second side; 203-middle part; 204-fastener; 205-mold microstructure; 300-Electrode mold. DETAILED DESCRIPTION

[0025] The wearable bracelet, its preparation method, and the sign language interaction system proposed in the present invention are further described in detail below in combination with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the accompanying drawings is often part of the actual structure. In particular, the emphasis that each drawing needs to show is different, and sometimes different proportions are used.

[0026] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish similar objects in order to describe the embodiments of the present invention, rather than to describe a specific order or sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In order to better illustrate the implementation scheme of the present application, the relevant terms and abbreviations are explained as follows: Ecoflex: Here refers to Ecoflex 0030, a silicone material with a Young's modulus close to that of human skin and excellent flexibility and stretchability; PDMS: polydimethylsiloxane; PVA: polyvinyl alcohol; PEG: polyethylene glycol PU: Polyurethane, the full name is polyurethane.

[0028] This embodiment provides a method for preparing a wearable bracelet, such as Figure 1 As shown, including: S1, preparing a wearable basic component, wherein the wearable basic component comprises a first wearable finger ring, a second wearable finger ring and a friction film layer, wherein the first wearable finger ring and the second wearable finger ring are connected via the friction film layer; S2, forming an ion film electrode layer on a surface of the friction film layer that is away from the first wearable finger ring and the second wearable finger ring, and leading out a wire; S3, forming an encapsulation layer on the surface of the ion film electrode layer to obtain a wearable bracelet.

[0029] Wherein, the friction film layer, the ion film electrode layer and the packaging layer are all flexible and stretchable.

[0030] The preparation method of the wearable bracelet provided in this embodiment is that the prepared wearable bracelet contacts the skin through the friction film layer, can generate microcurrent through the friction between the skin, and then can obtain accurate finger motion signals through the microcurrent; at the same time, by sequentially forming an ion film electrode layer and a packaging layer on the friction film layer, not only can the microcurrent be accurately derived through the ion film electrode layer, but also the signal interference caused by the environment, contact, etc. can be avoided through the packaging layer, thereby improving the acquisition accuracy of the finger motion signal; in addition, the material of the entire wearable bracelet is stretchable and can be adapted to the fingers of various people, so that it can be mass-produced and reduce costs, solving the problems of high development cost and poor signal acquisition accuracy of existing wearable gloves.

[0031] Specifically, in the present embodiment, the material of the friction film layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution, so that the prepared wearable bracelet has a certain ductility, so that it can better fit various types of finger skin and obtain accurate finger movement signals.

[0032] Hereinafter, the preparation method of the wearable bracelet provided in this embodiment is specifically described by taking the example that the material of the friction film layer is Ecoflex film, the material of the encapsulation layer is Ecoflex film, and the raw materials of the ion film electrode layer include PVA and phosphoric acid solution.

[0033] In this embodiment, step S1, a method for preparing a wearable basic component includes: S11, provide basic parts mold.

[0034] Specifically, Figure 2 As shown, the main body of the basic mold 200 is in a bow shape, the first side surface 201 and the second side surface 202 are used to form the first wear ring 110 and the second wear ring 120 respectively, and the middle part 203 is used to form the sensing connection part 130 connecting the first wear ring 110 and the second wear ring 120. In this embodiment, the first side surface 201 and the second side surface 202 are respectively provided with a detachable fastener 204, so that when the fastener 204 is locked, the first side surface 201 and the second side surface 202 form a cavity for forming the first wear ring 110 and the second wear ring 120; after the fastener 204 is removed, the first wear ring 110 and the second wear ring 120 can be taken out of the basic mold 200, and thus removed from the basic mold 200 together with the sensing connection part 130.

[0035] The material of the base mold 200 is not limited, as long as it can form a cavity to fill the material liquid to form a wearable bracelet, and the wearable bracelet can be taken out by disassembling the parts. The specific structural design and manufacturing implementation of the base mold 200 can be designed and produced by those skilled in the art according to the structure of the wearable bracelet, and this application will not repeat them.

[0036] S12, preparing a base component solution.

[0037] Since the material used to prepare the friction film layer in this embodiment is Ecoflex, this step specifically includes: weighing equal masses of Ecoflex A solution and B solution and mixing them to obtain Ecoflex solution, which is the base component solution.

[0038] Of course, in other embodiments, those skilled in the art can obtain a method for preparing the base component solution according to the material of the selected friction film layer, which will not be described in detail in this application.

[0039] S13, pouring the base component solution into the base component mold, and vacuuming to remove bubbles to form a wearable base component.

[0040] Specifically, in this embodiment, the base component solution needs to fill the cavity of the first side 201, the cavity of the second side 202, and the bottom of the middle part 203 of the base component mold, and the base component solutions in the three areas are interconnected to ensure that the first wear ring 110 and the second wear ring 120 of the manufactured wearable wristband are reliably connected through the friction film layer 131. That is to say, in this embodiment, the first wear ring 110 and the second wear ring 120 are specifically connected through the friction film layer 131 in the sensor connector 130.

[0041] It should be noted that in order to improve the structural stability of the manufactured wearable bracelet and prevent the multi-layer structure from separating after being pulled, in the present embodiment, the friction film layer 131 is not cured here, but is cured together after the encapsulation layer 133 is prepared.

[0042] Preferably, in order to increase the contact surface area between the friction film layer 131 and the finger skin, thereby improving the accuracy of the wearable bracelet in generating microcurrent, in the present embodiment, a mold microstructure 205 is further provided in the middle portion of the base mold 200, so that a functional area having a functional microstructure 1311 is formed on the surface of one side of the formed friction film layer 131 close to the first wearing ring 110 and the second wearing ring 120 (the side in contact with the finger skin).

[0043] In practical applications, the functional microstructure 1311 can be specifically pyramidal, hemispherical, conical, etc. Preferably, in order to obtain a better microcurrent collection effect, the size of the functional microstructure 1311 is 0.1-4 mm and arranged in an array. Those skilled in the art can know the specific design scheme of the mold microstructure 205 of the middle part 203 of the base mold 200 according to the structure and layout of the functional microstructure 1311, and this application will not repeat it.

[0044] Furthermore, in this embodiment, in step S2, the method of forming an ion film electrode layer on a surface of the friction film layer that is away from the first wearable ring and the second wearable ring, and leading out a wire comprises: S21, providing an electrode mold.

[0045] Specifically, Figure 3 As shown, the electrode mold 300 is a flat plate with enclosures, so that a planar ion film electrode layer 132 can be formed. The size of the area of ​​the electrode mold 300 used to form the ion film electrode layer 132 needs to be compatible with the size of the middle part 203 of the base mold 200, so as to ensure that the ion film electrode layer 132 can cover the functional area of ​​the friction film layer 131 without exceeding the friction film layer 131.

[0046] S22, prepare the electrode solution.

[0047] Since the raw materials selected for preparing the ion membrane electrode layer in this embodiment are PVA and phosphoric acid solution, this step may specifically include: First, PVA and distilled water are mixed in a preset weight ratio, and heated and stirred, and a PVA solution is obtained after the PVA is completely dissolved. For example, PVA and distilled water are mixed in a weight ratio of 1:9, and heated and stirred at 115±5°C for 120±20 minutes to obtain a PVA solution.

[0048] In a specific embodiment, 0.6 g of PVA is weighed, 5.4 g of distilled water is added, and the mixture is heated at 115° C. with stirring for 2 hours to obtain a PVA solution.

[0049] Then, the phosphoric acid solution (H3PO4) and the PVA solution are uniformly mixed according to a preset weight ratio to obtain an electrode solution, wherein the mass fraction of the phosphoric acid solution is 5% to 30%.

[0050] The weight ratio of the H3PO4 solution to the PVA solution should satisfy the mass fraction of H3PO4 in the electrode solution. Specifically, when 0.6 g of PVA is added to 5.4 g of distilled water to obtain a PVA solution, it can be mixed with 1.85 g of a phosphoric acid solution with a concentration of 85 wt%.

[0051] Of course, in other embodiments, those skilled in the art can obtain the preparation method of the electrode solution according to the material of the selected ion membrane electrode layer, and this application will not go into details.

[0052] S23, pouring the electrode solution into the electrode mold and leading out the wire to form an ion gel.

[0053] In this step, it is necessary to ensure that the electrode solution fills the groove area of ​​the electrode mold 300 and ensure that the surface of the electrode solution is flat, free of bubbles and impurities.

[0054] S24, heating and drying the ion gel to obtain an ion thin film electrode layer.

[0055] Specifically, it can be dried at 50±5°C for 5±0.5 hours to obtain the ion film electrode layer 132. Of course, in practical applications, due to the different shapes of electrode molds and the different thicknesses of the poured electrode solution, it is necessary to select a suitable temperature and duration according to actual conditions to ensure that the ion film electrode layer 132 is completely cured.

[0056] S25, taking out the ion film electrode layer from the electrode mold, and attaching it to the surface of the friction film layer on one side away from the first wearing ring and the second wearing ring.

[0057] Specifically, with the help of tools (such as tweezers), the solidified ion film electrode layer 132 is covered on the friction film layer 131 at the middle part 203 of the base mold 200, and it is noted that the ion film electrode layer 132 is flat without curling, deflection, or damage, and there is no gap or bubble between the ion film electrode layer 132 and the friction film layer 131, and the functional area of ​​the friction film layer 131 is completely covered.

[0058] Furthermore, in this embodiment, step S3, forming an encapsulation layer on the surface of the ion film electrode layer to obtain a wearable bracelet includes: S31, preparing encapsulation solution.

[0059] Specifically, in this embodiment, in order to reduce the complexity of the preparation process, the material of the encapsulation layer 133 is consistent with the material of the friction film layer 131, so the encapsulation solution and the base component solution are shared. When Ecoflex is selected as the encapsulation layer material, the encapsulation solution is Ecoflex solution, and its preparation method can refer to step S12.

[0060] S32, pouring the encapsulation solution into the base component mold formed with the ion film electrode layer.

[0061] In this step, the packaging solution should completely cover the friction film layer 131 and the ion film electrode layer 132 to achieve complete packaging of the friction film layer 131 and the ion film electrode layer 132. At the same time, it is necessary to ensure that the surface of the packaging solution is flat, free of bubbles and impurities.

[0062] S33, vacuuming, and heating and drying to form an encapsulation layer.

[0063] After vacuuming to remove bubbles, the whole is heated and dried, such as drying at 40±5°C for 60±10 minutes, to obtain the encapsulation layer 133. Of course, in practical applications, due to the different shapes of the base component molds and the different thicknesses of the poured base component solution and encapsulation solution, it is necessary to select a suitable temperature and duration according to actual conditions to ensure that the friction film layer 131 and the encapsulation layer 133 are completely cured.

[0064] Since the base component solution is not solidified in step S1, solidification in this step can simultaneously complete the solidification of the first wearing ring 110, the second wearing ring 120, the friction film layer 131 and the packaging layer 133, thereby realizing the integrated preparation of the wearable wristband, which not only does not need to be worn with the help of other fabric gloves, but also ensures the connection reliability of each structural level, thereby ensuring the sensitivity and accuracy of the finger motion signal collection.

[0065] S34, removing the wearable bracelet from the base component mold.

[0066] The wearable bracelet prepared according to the above-selected materials is transparent and has high stretchability. It is easy to wear and suitable for all kinds of fingers. At the same time, after the wearable bracelet is worn on the finger, when the finger is bent and straightened, the finger skin contacts / separates from the functional microstructure 1311 of the friction film layer 131, thereby obtaining different micro signals, and then being able to detect the bending of the finger at different angles according to the different micro signals, thereby improving the precision and accuracy of finger gesture detection.

[0067] Of course, in other embodiments, the color of the wearable bracelet can be changed by adding a masterbatch. And, those skilled in the art can obtain a preparation method for a wearable bracelet using other materials according to the above steps. The preparation method corresponding to other materials selected without violating the main purpose of this application should also fall within the scope of protection of this application.

[0068] Based on the preparation method of the wearable bracelet provided in this embodiment, this embodiment also provides a wearable bracelet, such as Figure 4As shown, the wearable bracelet includes a first wearable finger ring 110, a second wearable finger ring 120 and a sensor connector 130; the sensor connector 130 includes a friction film layer 131, an ion film electrode layer 132 and a packaging layer 133 stacked in sequence, the friction film layer 131 is close to the first wearable finger ring 110 and the second wearable finger ring 120, and the ion film electrode layer 132 has a wire leading out.

[0069] The wearable bracelet provided in this embodiment contacts the skin through the friction film layer 131, can generate microcurrent through friction between the skin, and then can obtain accurate finger motion signals through the microcurrent; at the same time, by sequentially forming the ion film electrode layer 132 and the encapsulation layer 133 on the friction film layer 131, not only can the microcurrent be accurately derived through the ion film electrode layer 132, but also the signal interference caused by the environment, contact, etc. can be avoided through the encapsulation layer 133, thereby improving the acquisition accuracy of the finger motion signal; in addition, the material of the entire wearable bracelet is elastic and can be adapted to the fingers of all kinds of people, so that it can be mass-produced and reduce costs; the wearable bracelet is manufactured in one piece, and does not need to be worn with the help of additional fabric gloves, and also ensures the reliability of the connection of each functional level, solving the problem of high development cost and poor signal acquisition accuracy of existing wearable gloves.

[0070] In practical applications, the first wearable finger ring 110 and the second wearable finger ring 120 are used to be put on fingers to wear and fix the wearable bracelets; the sensor connector 130 is used to be attached to the skin on the surface of the finger to collect the microcurrent generated by the movement of the finger.

[0071] Furthermore, in other embodiments, the widths of the first wearable finger ring 110 and the second wearable finger ring 120 may be designed differently, and the first wearable finger ring 110 and the second wearable finger ring 120 may even be connected to form a finger sleeve. Other wearable wristband structural designs that do not violate the subject matter of this application should also fall within the protection scope of this application.

[0072] Specifically, in this embodiment, the friction film layer 131 has a functional area, and a functional microstructure 1311 is formed on one side of the functional area close to the first wear ring 110 and the second wear ring 120. In order to ensure accurate collection of microcurrents generated by friction in various areas of the finger, the size of the functional microstructure 1311 is 0.1-4 mm.

[0073] In practical applications, the functional microstructure 1311 may be in a pyramidal shape, a hemispherical shape, a conical shape, etc. Preferably, in order to obtain a better microcurrent collection effect, the functional microstructure 1311 is arranged in an array.

[0074] Furthermore, in order to ensure that the microcurrent collected by each functional microstructure 1311 of the friction film layer 131 can be completely extracted by the ion film electrode layer 132, in this embodiment, the ion film electrode layer 132 covers the functional area. Also, in order to avoid interference of environmental factors on the collected signal and ensure the accuracy and stability of the output signal of the ion film electrode layer 132, in this embodiment, the encapsulation layer 133 covers the ion film electrode layer 132.

[0075] In addition, in order to fit various types of fingers and ensure the accuracy and sensitivity of collecting finger motion signals, in this embodiment, the materials of the first wearable ring 110, the second wearable ring 120 and the sensor connector 130 are all stretchable; and the material of the friction film layer 131 is electronegative.

[0076] In practical applications, the material of the friction film layer 131 is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer 133 is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer 132 include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution.

[0077] In order to reduce the difficulty of the process, the preparation process of the first wearing ring 110 and the second wearing ring 120 can be carried out simultaneously with the preparation of the friction film layer 131, that is, the material of the first wearing ring 110 and the second wearing ring 120 is the same as the material of the friction film layer 131, and they are manufactured as one piece.

[0078] Currently, in other embodiments, the material of the first wearing ring 110 and the second wearing ring 120 may also be other elastic materials, and the present application does not impose any limitation on this.

[0079] Furthermore, in this embodiment, the thickness of the friction film layer is 80-120 μm, the thickness of the packaging layer is 80-120 μm, and the diameter of the first wearing ring is 1.27-1.9 cm, and the diameter of the second wearing ring is 1.52-2.1 cm.

[0080] In order to facilitate the export of the collected finger motion signal and to ensure that the finger motion is not restricted, in this embodiment, a wire is led out from the ion film electrode layer 132 from a side close to the second wearable ring.

[0081] In the wearable wristband provided in this embodiment, the physical object of the ion film electrode layer 132 is as follows: Figure 5As shown. Figure 5 It can be seen that the ion film electrode layer 132 is transparent; the ion film electrode layer 132 has excellent tensile properties and can return to its original state after the external force is removed.

[0082] Wear the wearable bracelet provided in this embodiment on your finger, such as Figure 6 As shown, the transparent and elastic wearable bracelet is integrated in appearance; the first wear ring and the second wear ring of the wearable bracelet can freely adjust the tightness to adapt to the finger sizes of different wearers; the sensor connector of the wearable bracelet also has strong stretchability, and when the finger is bent at different angles, it will generate different sizes of electrical signals (finger movement signals) output. Figure 7 As shown in the figure, as the finger bending angle increases, the voltage amplitude also gradually increases. Among them, by comparing the test results of the friction film layer with different functional microstructures (including 3-2-3mm functional microstructure, 4mm functional microstructure, and 0mm functional microstructure), it can be found that the wearable bracelet with 3-2-3mm functional microstructure has the best linearity, that is, it has the best collection effect of finger motion signals.

[0083] Furthermore, this embodiment also provides a sign language interaction system, comprising at least one wearable bracelet as described above.

[0084] Specifically, in this embodiment, if Figure 8 As shown, the sign language interaction system also includes a signal processing module and a sign language recognition module; the signal processing module is used to receive the finger motion signal output by the wearable bracelet through the wire, and filter and de-noise the received finger motion signal, amplify the signal and perform analog-to-digital conversion processing to obtain a digital signal; the sign language recognition module is used to analyze and process the digital signal using a pre-trained sign language recognition model to obtain the language expression content corresponding to the digital signal.

[0085] In practical applications, the signal processing module can be integrated into FPC (flexible circuit board), such as Fig. 9 As shown, the signal processing module is designed as an FPC and worn on the back of the hand, and is electrically connected to the wearable bracelet through a wire to receive the finger motion signal generated by the wearable bracelet.

[0086] The signal processing module usually includes a preprocessing circuit, a serial communication circuit, a wireless communication circuit and a microcontroller, wherein the preprocessing circuit can realize filtering, denoising and amplification of the finger motion signal; the serial communication circuit is used for the user to issue instructions to the microcontroller to realize control of the signal processing module; the microcontroller is used to perform analog-to-digital processing on the finger motion signal according to the instructions to generate a digital signal; the wireless communication circuit is used to transmit the digital signal generated by the microcontroller to other functional modules such as the sign language recognition module by wireless communication.

[0087] In practical applications, those skilled in the art can design implementation schemes of preprocessing circuits, serial communication circuits, wireless communication circuits, and microcontrollers according to actual needs, and the wireless communication circuits can be implemented in the form of Bluetooth, WIFI, 4G networks, 5G networks, etc. This application does not limit the specific structure and implementation of the signal processing module. The structure of any signal processing module that does not violate the subject matter of this application shall fall within the scope of protection of this application.

[0088] In a specific embodiment, the digital signal collected by the signal processing module is used to control the posture of the robot. Fig.10 FIG. 1 is a comparison diagram of the signal collected by the signal processing module provided in this embodiment and the finger posture and manipulator posture. Fig.10 It can be seen that different finger postures correspond to different signals, and the collected signals can be used to control the robot to assume the same posture as the fingers, proving the accuracy of the collected signals.

[0089] And, in this embodiment, the sign language recognition module has a built-in sign language recognition algorithm and a gesture signal data set, wherein the gesture signal data set includes sign language indications of 26 English letters and 3 landmark gestures and their corresponding finger movement signals (digital signals).

[0090] In a specific embodiment, the sign language of 26 English letters and 3 sign gestures is as follows Fig.11 As shown in the figure, the three sign gestures represent "space", "send word", and "send to server" respectively; the finger movement signals (digital signals) corresponding to the 29 gestures are as follows Fig.12 shown.

[0091] The hand gesture signal data set can be used to train the sign language recognition algorithm. In this embodiment, 100 sets of data can be collected for each gesture, totaling 2900 (29×100) sample data. Each sample data contains the signal data of the wearable bracelet of 7 channels within a 3s time window. The data set is then input into the sign language recognition algorithm for multiple iterations of training, and finally the accuracy rate is 98% on the training set. The confusion matrix is ​​as follows: Fig.13As shown. In particular, since there are many types of labels in this example application, data enhancement methods can also be adopted in actual applications, such as noise superposition, time shift, proportional scaling, etc., to achieve the same prediction accuracy with less sampling data, thereby reducing the acquisition cost. After the training is completed, the sign language recognition algorithm can be used to recognize the gestures to output the corresponding language expression content.

[0092] Of course, in other embodiments, different gesture postures and meanings may be set so that different finger motion signals (digital signals) correspond to different meanings, and after being processed by the sign language recognition algorithm, the corresponding language expression content is output.

[0093] Furthermore, in this embodiment, the sign language interaction system also includes an interconnection communication module, and the interconnection communication module is used to use the wearable bracelet to realize interconnection communication with a large language model of a remote server.

[0094] In practical applications, the interconnection communication module may specifically include an interactive host computer, such as a VR interactive device, which includes a large language model service. In this way, when a user wears the wearable bracelet provided in this embodiment and makes relevant gestures, the signal processing module receives the corresponding finger movement signal, and the sign language recognition module obtains the corresponding language expression content according to the finger movement signal. The interconnection communication module can perform intelligent interaction according to the content output by the sign language recognition module, such as remotely sending the language expression content to the interactive object end or server, and the server returns a response based on a network search, etc., so as to realize the sign language interaction between the user and the interactive object or server.

[0095] Of course, in other embodiments, the interconnection communication module may also have other functions, such as virtual characters, dialogue scenes, etc., and this application does not limit this.

[0096] The sign language interaction system provided in this embodiment can accurately collect the user's hand gestures and accurately translate the hand gestures into corresponding language expressions, so that the meanings expressed by various gestures can be known; the sign language interaction system provided in this embodiment can realize remote interaction, thereby expanding the application scenarios of sign language.

[0097] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present invention is not limited to this.

[0098] The wearable wristband and its preparation method and sign language interaction system provided in this embodiment include: preparing a wearable base component, the wearable base component includes a first wearable finger ring, a second wearable finger ring and a friction film layer, the first wearable finger ring and the second wearable finger ring are connected through the friction film layer; forming an ion film electrode layer on the surface of the friction film layer away from the first wearable finger ring and the second wearable finger ring, and leading out a wire; forming an encapsulation layer on the surface of the ion film electrode layer; wherein the friction film layer, the ion film electrode layer and the encapsulation layer are all flexible and stretchable. By making the friction film layer contact with the skin, microcurrent can be generated through the friction between the skin, and then accurate finger movement signals can be obtained through the microcurrent; at the same time, by successively forming an ion film electrode layer and a packaging layer on the friction film layer, not only can the microcurrent be accurately derived through the ion film electrode layer, but also the signal interference caused by the environment, contact, etc. can be avoided through the packaging layer, thereby improving the acquisition accuracy of the finger motion signal; in addition, the material of the entire wearable bracelet is elastic and can be adapted to the fingers of all kinds of people, so that it can be mass-produced and reduce costs, solving the problems of high development cost and poor signal acquisition accuracy of existing wearable gloves.

[0099] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A method for preparing a wearable bracelet, characterized in that: include: Prepare a wear base member, the wear base member comprising a first wear finger ring, a second wear finger ring and a friction film layer, the first wear finger ring and the second wear finger ring are connected via the friction film layer; An ion film electrode layer is formed on a surface of the friction film layer that is away from the first wearing finger ring and the second wearing finger ring, and a wire is led out; forming an encapsulation layer on the surface of the ion film electrode layer to obtain a wearable wristband; Wherein, the friction film layer, the ion film electrode layer and the packaging layer are all flexible and stretchable.

2. The method for preparing a wearable bracelet according to claim 1, characterized in that: The material of the friction film layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution.

3. The method for preparing a wearable bracelet according to claim 1, characterized in that: The method for preparing the wear base member comprises: Provide basic parts mold; Prepare base component solution; The base piece solution is poured into a base piece mold and vacuum is applied to remove air bubbles to form a wear base piece.

4. The method for preparing a wearable bracelet according to claim 1, characterized in that: The method of forming an ion film electrode layer on a surface of the friction film layer that is away from the first wearing ring and the second wearing ring, and leading out a wire comprises: Provide electrode mold; Prepare electrode solution; pouring the electrode solution into the electrode mold and leading out the wire to form an ion gel; heating and drying the ion gel to obtain an ion film electrode layer; The ion film electrode layer is taken out from the electrode mold, and attached to a surface of the friction film layer on one side away from the first wearing ring and the second wearing ring.

5. The method for preparing a wearable bracelet according to claim 4, characterized in that: When the raw materials of the ion film electrode layer include PVA and phosphoric acid solution, the method for preparing the electrode solution includes: PVA and distilled water are mixed according to a preset weight ratio, and heated and stirred until the PVA is completely dissolved to obtain a PVA solution; The phosphoric acid solution and the PVA solution are uniformly mixed according to a preset weight ratio to obtain an electrode solution, wherein the mass fraction of the phosphoric acid solution is 5% to 30%.

6. The method for preparing a wearable bracelet according to claim 3, characterized in that: The method for forming an encapsulation layer on the surface of the ion film electrode layer to obtain a wearable bracelet comprises: Prepare encapsulation solution; pouring the encapsulation solution into the base component mold formed with the ion film electrode layer; Vacuuming and heating and drying to form a packaging layer; Remove the wearable bracelet from the base mold.

7. A wearable bracelet, manufactured using the method for preparing a wearable bracelet according to any one of claims 1 to 6, characterized in that: The wearable bracelet includes a first wearable finger ring, a second wearable finger ring and a sensor connector; the sensor connector includes a friction film layer, an ion film electrode layer and a packaging layer stacked in sequence, the friction film layer is close to the first wearable finger ring and the second wearable finger ring, and a wire is led out of the ion film electrode layer.

8. The wearable bracelet according to claim 7, characterized in that: The friction film layer has a functional area, and a functional microstructure is formed on a side of the functional area close to the first wearing ring and the second wearing ring; the size of the functional microstructure is 0.1-4 mm.

9. The wearable bracelet according to claim 8, characterized in that: The ion film electrode layer covers the functional area; the packaging layer covers the ion film electrode layer.

10. The wearable bracelet according to claim 7, characterized in that: The materials of the first wearing finger ring, the second wearing finger ring and the sensing connecting piece are all flexible and stretchable; the material of the friction film layer is electronegative.

11. The wearable bracelet according to claim 10, characterized in that: The material of the friction film layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the material of the encapsulation layer is one of Ecoflex film, PDMS, rubber, hydrogel, and dielectric elastomer; the raw materials of the ion film electrode layer include a polymer matrix and an ion conductive liquid, the polymer matrix includes one of PVA, PEG, and PU, and the ion conductive liquid includes one of a phosphoric acid solution and a boric acid solution.

12. The wearable bracelet according to claim 7, characterized in that: The thickness of the friction film layer is 80-120 μm; the thickness of the packaging layer is 80-120 μm.

13. The wearable bracelet according to claim 7, characterized in that: The diameter of the first wearing ring is 1.27-1.9 cm; the diameter of the second wearing ring is 1.52-2.1 cm; a wire is led out of the ion membrane electrode layer from a side close to the second wearing ring.

14. A sign language interaction system, characterized in that: Comprising at least one wearable bracelet as described in any one of claims 7 to 13.

15. The sign language interaction system according to claim 14, characterized in that: The sign language interaction system also includes a signal processing module and a sign language recognition module; the signal processing module is used to receive the finger motion signal output by the wearable bracelet through the wire, and filter and de-noise the received finger motion signal, amplify the signal and perform analog-to-digital conversion processing to obtain a digital signal; the sign language recognition module is used to analyze and process the digital signal using a pre-trained sign language recognition model to obtain the language expression content corresponding to the digital signal.

16. The sign language interaction system according to claim 15, characterized in that: The sign language interaction system also includes an interconnection communication module; the interconnection communication module includes a large language model service, which is used to use the wearable bracelet to communicate intelligently with the system user.

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