Intelligent glove combining optical fiber sensing and space division multiplexing

Abstract

The utility model relates to the technical field of intelligent gloves, and particularly discloses an intelligent glove combining optical fiber sensing and space division multiplexing, which mainly realizes high-channel capacity sensing through a multi-core optical fiber and a space division multiplexer, improves signal anti-interference capability and system stability, increases activity allowance through spiral coiling, improves environment adaptability, and improves the performance of the intelligent glove. And the complex problem of segmented layout and wiring is reduced. According to the main technical scheme, the intelligent glove combining optical fiber sensing and space division multiplexing comprises a glove body, and the glove body comprises an inner layer, a middle layer and an outer layer which are arranged from inside to outside; sensing units are respectively arranged at the knuckles on one side of the hand back of the middle layer, and the multi-core optical fiber is spirally coiled in the finger area of the middle layer and is connected with the sensing units at the knuckles; the wrist ring is connected to the wrist of the glove body in a sleeving mode, an air division multiplexer is arranged in the wrist ring, and the multi-core optical fiber is electrically connected with the air division multiplexer. The hand motion sensing device is mainly used for sensing hand motions.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent glove technical field especially, it relates to a kind of intelligent gloves in combination with optical fiber sensing and space division multiplexing. BACKGROUND

[0002] As early as 1979, space division multiplexing technology based on multi-core optical fiber has been proposed, and due to the subsequent emergence of wavelength division multiplexing (WDM) and single-mode fiber system with coherent detection, space division multiplexing technology is temporarily shelved. In the 21st century, the optical network based on single-mode fiber is close to its theoretical capacity limit again, which causes researchers to be alert to the capacity crisis, and the research related to space division multiplexing also becomes a research hotspot again.

[0003] In recent years, the application of optical fiber sensing technology in intelligent wearable devices has gradually attracted attention, especially in the field of electronic skin, which shows broad application prospects. As an important branch of flexible sensing technology, electronic skin can realize the sensing of multiple physical quantities such as pressure, temperature, and bending, and has brought revolutionary breakthroughs in the fields of human-computer interaction, medical rehabilitation, and remote control. However, the optical fiber Bragg grating array or single-mode fiber bending loss detection method used in the prior art is limited by time division multiplexing or wavelength multiplexing technology, and the number of channels is limited, making it difficult to realize high-density multi-parameter sensing, which leads to significant bottlenecks in channel capacity, anti-interference, and dynamic response of existing optical fiber sensing electronic skin technology, making it difficult to meet the fine detection requirements in complex scenarios. UTILITY MODEL CONTENT

[0004] Therefore, the utility model embodiment provides an intelligent glove in combination with optical fiber sensing and space division multiplexing, mainly used to solve the problems of limited channel capacity, high dynamic response delay and insufficient environmental adaptability in existing optical fiber sensing gloves.

[0005] To achieve the above purpose, the utility model mainly provides the following technical scheme:

[0006] The utility model embodiment provides an intelligent glove in combination with optical fiber sensing and space division multiplexing, comprising:

[0007] The glove body includes an inner layer, a middle layer and an outer layer arranged from inside to outside;

[0008] A plurality of core optical fibers and a sensing unit are arranged at each knuckle on the back of the hand of the middle layer, and the plurality of core optical fibers are spirally wound in the finger area of the middle layer and connected to the sensing unit at each knuckle;

[0009] A wrist ring is sleeved on the wrist of the glove body, and a space division multiplexer is arranged in the wrist ring, and the plurality of core optical fibers are connected to the space division multiplexer.

[0010] The pitch of the spiral winding of the multi-core optical fiber at the finger region is greater than or equal to 1.3 mm and less than or equal to 1.7 mm.

[0011] The angle between the direction of the spiral winding of the multi-core optical fiber at the finger region and the extension direction of the finger region is greater than or equal to 40° and less than or equal to 50°.

[0012] The sensing unit and the multi-core optical fiber are connected by epoxy resin glue.

[0013] The outer layer includes a first fabric layer and a waterproof sealing layer arranged from inside to outside;

[0014] The material of the middle layer includes silica gel;

[0015] The inner layer includes a second fabric layer.

[0016] The outer layer is provided with a through hole, the wrist ring is provided with a connector, the multi-core optical fiber is threaded through the through hole, and a sealing ring is arranged between the multi-core optical fiber and the through hole;

[0017] The multi-core optical fiber is electrically connected with the connector, and the connector is electrically connected with the space division multiplexer.

[0018] The wrist ring includes an inner ring and an outer ring, both the inner ring and the outer ring have elasticity, the inner ring is connected with the glove body, the outer ring is located at the outer periphery of the inner ring, the outer ring is connected with the inner ring, and the outer ring and the inner ring enclose a containing cavity;

[0019] The space division multiplexer is arranged in the containing cavity and connected with the inner ring, and the inner ring is provided with a connector;

[0020] The outer ring is connected with a processor module and a charging module, the charging module is electrically connected with the processor module, and the processor module is electrically connected with the space division multiplexer.

[0021] The multi-core optical fiber is arranged and disposed from the finger root to the wrist in the palm region, and the length is greater than the minimum straight line distance from the finger root to the wrist.

[0022] A plurality of parallel arranged strip-shaped grooves are arranged on the inner surface of the inner layer at the wrist.

[0023] The surface of the glove body and the surface of the wrist ring are respectively covered with a flexible conductive film.

[0024] The utility model embodiment provides a kind of intelligent gloves of combination fiber sensing and space division multiplexing, adopt multi-core optical fiber and space division multiplexer, realize high channel capacity perception, significantly improve the anti-interference ability and system stability of signal transmission, provide the multi-core optical fiber sensing network of high channel density, can realize the multi-parameter cluster detection under complex environment, with high anti-interference ability, fast dynamic response and strong environmental adaptability. Through the mode of spiral coiling design cooperation sensing unit, avoid the complex problem of optical fiber wiring caused by multiple node discrete design, and spiral coiling increases the activity margin, reduces multi-core optical fiber abrasion, with better environmental adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 The utility model provides a kind of intelligent gloves of combination fiber sensing and space division multiplexing structure schematic view for utility model embodiment;

[0026] Fig. 2 The utility model provides a kind of intelligent gloves of combination fiber sensing and space division multiplexing structure schematic view of middle layer, multi-core optical fiber and sensing unit connection for utility model embodiment;

[0027] Fig. 3 The utility model provides a kind of intelligent gloves of combination fiber sensing and space division multiplexing structure schematic view of part of wrist ring for utility model embodiment.

[0028] Among them, middle layer-100, wrist ring groove-110, outer layer-200, multi-core optical fiber-300, sensing unit-400, wrist ring-500, inner ring-510, outer ring-520, space division multiplexer-600, processor module-700, charging module-800, charging port-810. DETAILED DESCRIPTION

[0029] To further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the following combines with the drawings and preferred embodiments, the specific implementation mode, structure, features and effects of the intelligent gloves of combination fiber sensing and space division multiplexing according to the utility model are described in detail as follows.

[0030] As Figs. 1-3 The utility model embodiment provides an intelligent glove of combination fiber sensing and space division multiplexing, including:

[0031] Glove body, glove body includes by inner layer, middle layer 100 and outer layer 200 from inside to outside setting;

[0032] Multi-core optical fiber 300 and sensing unit 400, the each knuckle of the back of hand side of middle layer 100 is respectively provided with sensing unit 400, and multi-core optical fiber 300 is spirally coiled in the finger area of middle layer 100, and is connected with sensing unit 400 at each knuckle.

[0033] A wrist ring 500 is sleeved on the wrist of the glove body, and a space division multiplexer 600 is arranged in the wrist ring 500, and the multi-core optical fiber 300 is connected with the space division multiplexer 600.

[0034] The inner layer, the middle layer 100 and the outer layer 200 are sequentially nested outwardly to form a glove body capable of accommodating a hand. The glove body includes five finger regions for accommodating five fingers, and a palm region for accommodating a palm. It can be understood that the inner layer, the middle layer 100 and the outer layer 200 each include a finger region and a palm region. The knuckles refer to the joints of the fingers that can be flexibly bent. For the thumb, one knuckle at the base of the finger and one knuckle at the middle of the finger are included. For the remaining four fingers, one knuckle at the base of the finger and two knuckles at the middle of the finger are included.

[0035] The sensing unit 400 can adopt a variety of optical fiber sensors or a setting of a fiber grating-based bending sensor, which mainly includes an alloy sheet or an alloy wire, and the multi-core optical fiber 300 is attached to the alloy sheet or the alloy wire. The alloy sheet or the alloy wire is used to be attached to the middle layer 100, and with the bending of the fingers, the alloy sheet or the alloy wire will be deformed, thereby generating a change in the optical signal. When specifically arranged, one sensing unit 400 is arranged at a distance of 12 mm and 25 mm from the fingertip in the thumb region to realize the arrangement of the two knuckles of the thumb. One sensing unit 400 is arranged at a distance of 10 mm, 23 mm and 37 mm from the fingertip for the remaining four fingers to realize the arrangement of the three knuckles of the remaining four fingers. The size of the sensing unit 400 can be adjusted according to the size of the glove body. For example, the length of the sensing unit 400 is greater than or equal to 1.3 mm and less than or equal to 1.7 mm, and the width of the sensing unit 400 is greater than or equal to 1.3 mm and less than or equal to 1.7 mm. For example, the size of the sensing unit 400 can be 1.5*1.5 mm. 2 .

[0036] Multi-Core Fiber (MCF) 300 is a kind of optical fiber with multiple independent optical cores, such as 7-core fiber, 8-core fiber, each core diameter 8 μm, cladding 125 μm. Cooperating with space division multiplexer 600, it realizes per-core multiplexing, that is, capacity improvement by increasing the number of cores in a single optical fiber to realize high channel capacity perception. To increase the sensitivity and comprehensiveness of the finger area, the multi-core optical fiber 300 adopts a spiral winding method in the finger area, and connects the sensing unit 400 at the knuckle to increase the sensitivity. In specific arrangement, the multi-core optical fiber 300 starts from the fingertip, winds to the side of the finger root in a snake shape, and when it meets the sensing unit 400 closest to the fingertip, it connects with the sensing unit 400, then the multi-core optical fiber 300 is led out from the sensing unit 400 and continues to wind to the finger root in a snake shape, connects with the next sensing unit 400, and finally connects with the sensing unit 400 at the finger root. The multi-core optical fiber 300 led out from the sensing unit 400 at the finger root continues to extend to the palm area and is arranged along the metacarpal bone in combination with the space division multiplexer 600 of the wrist ring 500.

[0037] The wrist ring 500 is a hollow ring sleeved on the wrist area. In some embodiments, the outer layer 200 is bonded with the middle layer 100 in the area corresponding to the wrist ring 500, and a wrist ring groove 110 is arranged in the area to realize embedded fixation of the wrist ring 500, so that the wrist ring 500 is stable in position and more beautiful in appearance.

[0038] The intelligent glove combining optical fiber sensing and space division multiplexing according to the embodiments of the present application innovatively adopts multi-core optical fiber and space division multiplexer to realize high channel capacity perception, significantly improve the anti-interference ability and system stability of signal transmission, provide a multi-core optical fiber sensing network with high channel density, and can realize multi-parameter aggregation detection in complex environments, with high anti-interference ability, fast dynamic response and strong environmental adaptability. Through the spiral winding design in cooperation with the sensing unit, the problem of complex optical fiber wiring caused by multi-node discrete design is avoided, and the spiral winding increases the activity allowance and reduces the wear of the multi-core optical fiber, with better environmental adaptability.

[0039] The greater the winding density of the multi-core optical fiber 300, the higher the sensitivity of the sensing, but the higher the requirement for channel capacity. To balance the sensing ability and meet the limitation of channel capacity, the pitch of the spiral winding of the multi-core optical fiber 300 in the finger area is greater than or equal to 1.3 mm and less than or equal to 1.7 mm, and the angle between the direction of the spiral winding of the multi-core optical fiber 300 in the finger area and the extension direction of the finger area is greater than or equal to 40° and less than or equal to 50°. The extension direction of the finger area refers to the direction from the fingertip to the finger root in the natural state.

[0040] The multi-core optical fiber 300 is wound in a serpentine shape at the knuckles with a 45° inclination, and the pitch of the multi-core optical fiber 300 is 1.5 mm. In some embodiments, the multi-core optical fiber 300 is not in close contact with the middle layer 100 in all areas, but the multi-core optical fiber 300 reserves a linear redundancy section of 1-1.5 mm for each knuckle, which can adapt to the adjustment of hand movement. In some embodiments, the multi-core optical fiber 300 is arranged and laid from the finger root to the wrist in the palm area, and the length is greater than the straight-line distance from the finger root to the wrist. That is, a redundancy section is left in the area of the multi-core optical fiber 300 between the finger root and the wrist, that is, a small amount of length of the multi-core optical fiber 300 is reserved as a margin for the outward protrusion of the finger root. An elastic mechanical clamping sheet can be used to fix the redundancy spacing of the middle layer 100 by 5 mm, so as to press down the mechanical clamping sheet and release the margin when pulled.

[0041] The multi-core optical fiber 300 can be laid by using a negative pressure suction device, and the vacuum degree is adjusted to -85 kPa. The multi-core optical fiber 300 is adhered to the surface of the middle layer 100 according to the predetermined path.

[0042] In some embodiments, the sensing unit 400 is connected with the multi-core optical fiber 300 through epoxy resin glue. Epoxy resin glue is dropped and applied at the junction of the sensing unit 400 and the multi-core optical fiber 300, the viscosity of the epoxy resin glue is 350 cps, and then ultraviolet curing is adopted to realize the coupling and connection of the sensing unit 400 and the multi-core optical fiber 300.

[0043] The inner layer, the middle layer 100 and the outer layer 200 can be made of various materials. In some embodiments, the outer layer 200 has waterproofness. More specifically, the outer layer 200 includes a first fabric layer and a waterproof sealing layer arranged from inside to outside. The waterproof sealing layer adopts a nano film and a liquid silicone film. The first fabric layer is composed of a composite fabric of thermoplastic polyurethane elastomer rubber (TPU) and nylon material. The outer layer 200 adopts a multi-layer sealing structure of PTFE nano film and liquid silicone, and the outline conforms to the ergonomic design, such as an ergonomic curved surface fitting error <0.3 mm. In order to verify the stability of the embodiment in a high humidity environment, the environmental humidity is controlled to be greater than 95% during testing, and a PTFE nano film with a pore size of 0.2 μm and liquid silicone are used for secondary injection molding, so as to ensure that the IP68 level protection performance is reached. Under the condition that the humidity is greater than 95%, the test shows that the system error rate is less than 10-9, and the signal transmission is stable and reliable.

[0044] The material of the middle layer 100 includes silica gel, such as a pure silica gel layer, such as a thin layer composed of high-density flexible silica gel, and the multi-core optical fiber 300 network covers the middle layer 100. The inner layer includes a second fabric layer, which can also be composed of a composite fabric of flexible TPU and nylon material, but the inner layer does not need to have PTFE + silica gel encapsulation again, otherwise it will affect the air permeability and fit, and similarly, the ergonomic curvature fitting error of the inner layer is <0.3 mm, which can be tightly fitted with the hand.

[0045] The tensile strength of the inner layer, the middle layer 100, and the outer layer 200 is greater than 7 MPa (in both the warp and weft directions), and needs to meet the bending life > 5 million times (ASTM D4065 standard). The thickness of the outer layer 200 can be 0.75-0.85 mm, such as 0.8 mm, and the outer layer 200 is thickened to 1.2 mm at the knuckles, which is used to protect the sensing unit 400 and avoid excessive bending. The thickness of the middle layer 100 can be 0.2-0.4 mm, such as 0.3 mm. The thickness of the inner layer can be 0.4-0.6 mm, such as 0.5 mm.

[0046] In some embodiments, UV curing glue points are dripped at the knuckles of the outer layer 200, such as with a diameter of 0.5 mm and a spacing of 2 mm, to form a wrinkle structure, so that the knuckles are more comfortable.

[0047] In one embodiment, a through hole is formed on the outer layer 200, a connector is provided on the wrist ring 500, the multi-core optical fiber 300 is connected to the through hole, and a sealing ring is provided between the multi-core optical fiber 300 and the through hole. The through hole is prefabricated on the wrist area of the outer layer 200. The sealing ring provided between the multi-core optical fiber 300 and the through hole can improve the system stability and waterproof capability. A polytetrafluoroethylene (PTFE) annular reinforcing sheet can be wrapped around the edge of the through hole. A TPU sheath or liquid silicone sealing ring is wrapped around the area where the multi-core optical fiber 300 is connected to the through hole, to ensure that the multi-core optical fiber 300 has good flexibility, buffering and protection performance when passing through the outer layer 200, prevent water vapor from entering the middle layer 100, and can also buffer mechanical pulling.

[0048] The multi-core optical fiber 300 is electrically connected to the connector, and the connector is electrically connected to the space division multiplexer 600. The connector can be a multi-core optical fiber plug connector (MPO), and the tail end of the multi-core optical fiber 300 is connected to the space division multiplexer 600 in the wrist ring 500 through the MPO. The MPO has a positioning guide structure and low-loss coupling performance for optical signals, and the number of plug-in times is >1000, and the insertion loss is <0.5 dB. The MPO supports reliable coupling between the multi-core optical fiber 300 and the space division multiplexer 600, while ensuring that the wrist ring 500 can still maintain the integrity of the optical signal and stable transmission when it is disassembled or replaced.

[0049] In some embodiments, the wrist ring 500 comprises an inner ring 510 and an outer ring 520, both of which are flexible. For example, the inner ring 510 and the outer ring 520 can be made of a soft ceramic material such as zirconia toughened ceramic (fracture toughness 8 MPa·m 1 / 2 ) to enhance the wearing comfort, and to allow the inner circumference of the wrist ring 500 to be adjusted to a range of 15-25 cm and to be expanded by pulling to allow the hand to be inserted, so as to adapt to the wrist circumference of an adult. The width of the wrist ring 500 can range from 10-20 mm, for example, 15 mm, and the thickness of the wrist ring 500 can range from 3-4 mm, for example, 3.2 mm. The ceramic forming of the wrist ring 500 can be gel casting (solid content 55 vol%), and after sintering at 1500°C, polishing to Ra<0.1 μm.

[0050] The inner ring 510 is fixedly connected to the glove body, for example, the outer layer 200, and the outer ring 520 is located outside the inner ring 510. The outer ring 520 is connected to the inner ring 510, and the outer ring 520 and the inner ring 510 form a containing cavity. The outer ring 520 forms a protective shell, and the outer ring 520 and the inner ring 510 can be connected by a quick-release positioning structure, for example, a plurality of clamping joints and clamping grooves can be arranged at the edges of the outer ring 520 and the inner ring 510. The outer ring 520 can be rotatably clamped with the inner ring 510, so as to facilitate the user to open the outer ring 520, quickly replace the faulty module, and perform maintenance and upgrading.

[0051] The spatial division multiplexer 600 is arranged in the containing cavity and is connected to the inner ring 510. The inner ring 510 is provided with a connector, and the outer ring 520 is connected with a processor module 700 and a charging module 800. The charging module 800 is electrically connected with the processor module 700, and the processor module 700 is electrically connected with the spatial division multiplexer 600. The above arrangement can realize functional partitioning and packaging, that is, the charging module 800 and the processor module 700 can be individually disassembled, so as to avoid affecting the connection of the multi-core optical fiber 300 during disassembly. The charging module 800 can be a battery with a USB charging port fixed on the outer ring 520, or can be a battery using wireless charging. The processor module 700 can be a PCB board, and a wireless transceiver module can be integrated on the PCB board to transmit signals to an upper computer for data analysis, etc. Alternatively, the processor module 700 can comprise a PCB board and a data interface fixed on the outer ring 520, and an external upper computer is connected through the interface, and then data transmission is performed. Alternatively, in some embodiments, the processor module 700 and the charging module 800 can not be arranged in the wrist ring 500, but an interface electrically connected to the spatial division multiplexer 600 is arranged on the wrist ring 500, and an external processor is connected through the interface to realize online data processing.

[0052] In a more specific embodiment, the PCB board is embedded with a nut, the torque is controlled at 0.15 N·m, and the PCB board is installed on the inner wall of the outer ring 520 relative to the inner ring 510. The charging module 800 can adopt a flexible lithium battery and be placed in the outer ring 520 in a ring shape. The capacity of the charging module 800 is 120 mAh. When the multi-core optical fiber 300 is a 7-core optical fiber, the space division multiplexer 600 adopts a 7-core single-mode optical fiber bundle with a cladding diameter of 250 μm as a sensing backbone. The space division multiplexer 600 is set to a channel interval of 200 GHz (1.6 nm), and the insertion loss is less than 3 dB. The channel consistency is ±0.5 dB.

[0053] In an embodiment, a plurality of parallel strip-shaped channels are arranged on the inner surface of the inner layer at the wrist, and the strip-shaped channels form a 3D micro-channel structure. The groove depth of the channel can be 90-110 μm, for example, 100 μm. The groove width of the channel can be 150-220 μm, for example, 200 μm. The spacing between adjacent channels can be 200-400 μm, for example, 300 μm. The strip-shaped channels are used to guide the sweat secreted by the skin to flow in a predetermined direction. For example, the channels extend towards the opening edge of the glove body, forming a sweat dispersion channel towards the outside of the edge, preventing water vapor from penetrating into the middle layer 100, and ensuring the signal stability of the system in a high-humidity environment. At the same time, the 3D micro-channel structure has surface fitting adjustment and micro-elastic buffer functions, which can improve the uneven fitting problem caused by skin texture and bone protrusions at the wrist, and further improve the signal recognition accuracy and wearing comfort.

[0054] In an embodiment, the surface of the glove body and the surface of the wrist ring 500 are covered with a flexible conductive film. For example, antimony-doped tin oxide (ATO) is sprayed on the outer layer 200 of the glove body and the surface of the wrist ring 500 to form a continuous and uniform flexible transparent film. The surface resistance of the flexible transparent film is not greater than 10 Ω / sq, which is used to improve the anti-electromagnetic interference capability and device protection capability of the system.

[0055] In the test, through the space division multiplexer 600 built-in the wrist ring 500, cooperating with the FPGA real-time processing system, the demodulation and data fusion of multi-channel signals can be completed. The dynamic response bandwidth of the system can reach 1.2 kHz, which can stably cope with high-frequency dynamic change scenes, realize rapid feedback and high-precision identification under complex motion states. In the application of complex tasks (such as assembling precision instruments, complex gesture control, etc.), it shows extremely high sensitivity and stability. The spatial resolution of each sensing unit 400 reaches 0.8 mm 2 , and the channel capacity reaches 56, which significantly improves the fineness and accuracy of data acquisition. It provides important technical support for the application of industrial operation, remote control and medical rehabilitation. Its excellent anti-interference capability and dynamic response characteristics make the utility model perform well in complex environments, and also show strong environmental adaptability and expansion potential.

[0056] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A smart glove incorporating fiber optic sensing and space division multiplexing, characterized in that, The glove body comprises an inner layer, a middle layer and an outer layer arranged from inside to outside; A plurality of fiber-optic sensors are arranged on the middle layer of the glove body, and a plurality of sensing units are arranged on the back of the hand of the middle layer respectively at each knuckle, and a plurality of multi-core optical fibers are spirally wound in the finger region of the middle layer and connected with the sensing units at each knuckle; A wrist ring is sleeved on the wrist of the glove body, and an air-space multiplexer is arranged in the wrist ring, and the multi-core optical fibers are connected with the air-space multiplexer.

2. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein the pitch of the spiral winding of the multi-core optical fibers in the finger region is greater than or equal to 1.3 mm and less than or equal to 1.7 mm.

3. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein the angle between the direction of the spiral winding of the multi-core optical fibers in the finger region and the extension direction of the finger region is greater than or equal to 40° and less than or equal to 50°.

4. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein the sensing units are connected with the multi-core optical fibers by epoxy resin glue.

5. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein the outer layer comprises a first fabric layer and a waterproof sealing layer arranged from inside to outside; the material of the middle layer comprises silica gel; the inner layer comprises a second fabric layer.

6. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein a plurality of perforations are formed on the outer layer, a connector is arranged on the wrist ring, the multi-core optical fibers are threaded through the perforations, and a sealing ring is arranged between the multi-core optical fibers and the perforations; the multi-core optical fibers are electrically connected with the connector, and the connector is electrically connected with the air-space multiplexer.

7. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 6, wherein the wrist ring comprises an inner ring and an outer ring, the inner ring and the outer ring are both elastic, the inner ring is connected with the glove body, the outer ring is located at the outer periphery of the inner ring, the outer ring is connected with the inner ring, and the outer ring and the inner ring enclose a containing cavity; the air-space multiplexer is arranged in the containing cavity, and the air-space multiplexer and the connector are both connected with the inner ring; a processor module and a charging module are connected on the outer ring, the charging module is electrically connected with the processor module, and the processor module is electrically connected with the air-space multiplexer.

8. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein the multi-core optical fibers are arranged from the finger root to the wrist in the palm region, and the length is greater than the minimum straight-line distance from the finger root to the wrist.

9. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein a plurality of strip-shaped grooves arranged in parallel are arranged on the inner surface of the inner layer at the wrist.

10. The intelligent glove combined with fiber-optic sensing and air-space multiplexing according to claim 1, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ The surface of the glove body and the surface of the wrist ring are respectively covered with a flexible conductive film. The surface of the glove body and the surface of the wrist ring are respectively covered with a flexible conductive film.

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