Electromagnetic induction fabric with embedded conductors and magnetic fields and preparation method thereof

Abstract

This invention discloses an electromagnetic induction fabric with interlocking conductors and magnetic fields, and its preparation method. A pretreated elastic polymer and magnetic particles are mixed in a certain proportion, shaped, and magnetized to obtain magnetic fibers. A first hollow double-layer fabric is prepared by weft-forming the upper and lower layers separately using ordinary yarn as warp and weft. Then, a second hollow double-layer fabric is prepared by cyclically weft-forming the upper and lower layers using ordinary fibers as warp and conductive fibers as weft, connected to the first hollow double-layer fabric. The preparation operations of the first and second hollow double-layer fabrics are repeated to obtain a conductive fabric with several holes along the weft direction. Magnetic fibers are then inserted into the conductive fabric through the holes to obtain the electromagnetic induction fabric with interlocking conductors and magnetic fields. By utilizing the stretching / contraction of the electromagnetic induction fabric, the magnetic fibers move away / close, causing a change in the magnetic flux of the conductive fibers, thereby generating an induced electromotive force, realizing the combination of electromagnetic induction and a flexible sensor device.

Description

Technical Field

[0001] This invention relates to the field of flexible sensing fabric technology, and in particular to an electromagnetic induction fabric in which wires and magnetic fields are interlocked, and its preparation method. Background Technology

[0002] Currently, flexible sensing technology is developing rapidly and is gradually being applied in fields such as personal health monitoring, human-computer interaction, and soft robotics. However, this technology requires external power supply / storage devices (such as batteries), which limits its application range, lifespan, and lightweight design. Therefore, self-powering of flexible sensing devices is crucial.

[0003] Electromagnetic induction is the phenomenon where a change in magnetic flux through a closed loop induces an electromotive force. First discovered by Faraday, this phenomenon led to the emergence of self-generating devices based on electromagnetic induction, which gradually became an important energy harvesting method. However, in current self-generating devices, the conductive coils and magnets are primarily made of rigid materials, are heavy, and lack flexibility and elasticity, making it difficult to integrate them with flexible sensors for related applications.

[0004] In the prior art, invention patent CN 110184731 B discloses a fabric sensor with negative piezoresistive effect and its application. It uses an elastic knitted fabric as the substrate, immerses it in a dispersion of graphene-containing conductive material, increases the immersion rate through stirring and pressing, removes and dries, and repeats the above operation once or multiple times; then it is reduced with hydrazine hydrate, cleaned and dried to obtain a coated fabric sensor; at least two electrodes are set on the fabric, connected to an external current source and voltage measuring instrument through conductive silver paste, aluminum foil, copper wires, etc., and the strain sensing with negative piezoresistive effect is achieved by characterizing the piezoresistive effect of strains such as tension, compression, torsion, and oscillation. This fabric sensor has a simple process, is easy to operate, has low production cost, and stable function. However, the device requires an external current source during application, which limits its sensing use.

[0005] In view of this, it is necessary to design an electromagnetic induction fabric in which the conductor and the magnetic field are interlocked and a method for its preparation, in order to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an electromagnetic induction fabric that can be bent and spring back at will, without the need for external power supply devices such as batteries, and can detect human movements or external signals such as joint movements and external forces, and realize the combination of electromagnetic induction and flexible sensor devices, in which the wire and magnetic field are interembedded, and the method for preparing the same.

[0007] To achieve the above-mentioned objective, this invention provides a method for preparing an electromagnetic induction fabric in which the conductor and magnetic field are interlocked, comprising the following steps:

[0008] S1. Pretreated elastic polymer and magnetic particles are mixed in a certain proportion, extruded through a plastic container, and then shaped and magnetized to obtain magnetic fibers.

[0009] S2. Using ordinary yarn as warp and weft, the upper and lower layers are interlaced separately, and after a certain number of interlacing cycles, a first hollow double-layer fabric with a hollow structure is obtained; then, using ordinary fiber as warp and conductive fiber as weft, the upper and lower layers are interlaced cyclically, and after a certain number of interlacing cycles, a second hollow double-layer fabric containing annular conductive fiber loops perpendicular to the warp direction is obtained, and the second hollow double-layer fabric is connected to the first hollow double-layer fabric; repeating the preparation operations of the first hollow double-layer fabric and the second hollow double-layer fabric, a conductive fabric with several holes along the weft direction is obtained, and the several annular conductive fiber loops on the conductive fabric are connected to each other and spaced at a certain distance;

[0010] S3. Insert the magnetic fiber prepared in step S1 into the conductive fabric prepared in step S2 through the holes to obtain an electromagnetic induction fabric in which the wire and the magnetic field are interlocked.

[0011] As a further improvement of the present invention, in step S1, the magnetization operation is to magnetize the shaped fiber to be magnetized at a voltage of 1500-3000V for 1-2000ms to obtain the magnetic fiber.

[0012] As a further improvement of the present invention, in step S1, the mass ratio of the elastic polymer to the magnetic particles is 80:20 to 20:80.

[0013] As a further improvement of the present invention, the elastic polymer includes any one of polyvinyl alcohol, polyurethane, polydimethylsiloxane, polymethylvinylsiloxane, polypropylene, polyolefin and styrene polymer.

[0014] As a further improvement of the present invention, the magnetic particles include any one of neodymium iron boron magnetic powder, neodymium nickel cobalt magnetic powder, iron oxide magnetic powder, chromium dioxide magnetic powder, and cobalt-iron oxide magnetic powder.

[0015] As a further improvement of the present invention, in step S2, the conductive fiber includes any one of carbon fiber, graphene fiber, carbon nanotube fiber, silver-plated fiber, copper-plated fiber, gold-plated fiber, aluminum-plated fiber, iron-plated fiber, copper fiber, silver fiber, gold fiber, aluminum fiber, and iron fiber.

[0016] As a further improvement of the present invention, in step S2, the holes in the conductive fabric along the weft direction include a first hole corresponding to the interval area of ​​the annular conductive fiber loop and a second hole near the boundary of the sidewall of the conductive fabric.

[0017] As a further improvement of the present invention, in step S1, the pretreatment operation of the elastic polymer is to dissolve the elastic polymer granules in a corresponding solvent or to mix the raw materials of the elastic polymer in proportion to form an uncured elastic solution according to the properties of the elastic polymer.

[0018] As a further improvement of the present invention, in step S2, the ordinary fiber includes any one of cotton fiber, wool fiber, polyester fiber and nylon fiber; the conductive fabric is woven with ordinary fibers except for the annular conductive fiber loop.

[0019] The present invention also provides an electromagnetic induction fabric in which conductors and magnetic fields are interlocked. The electromagnetic induction fabric in which conductors and magnetic fields are interlocked is prepared by any of the above-mentioned technical solutions, including a conductive fabric with several holes along the weft direction and magnetic fibers located in the conductive fabric.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention involves mixing pretreated elastic polymers and magnetic particles in a certain proportion, followed by shaping and magnetization to prepare magnetic fibers. Simultaneously, using ordinary yarn as warp and weft, the upper and lower layers are separately weft-stitched to prepare a first hollow double-layer fabric. Then, using ordinary fibers as warp and conductive fibers as weft, the upper and lower layers are cyclically weft-stitched to prepare a second hollow double-layer fabric. The second hollow double-layer fabric is connected to the first hollow double-layer fabric. The preparation operations of the first and second hollow double-layer fabrics are repeated to obtain a conductive fabric with several holes along the weft direction. Magnetic fibers are inserted into the conductive fabric through the holes to obtain an electromagnetic induction fabric with interlocking wires and magnetic fields. The stretching / contraction of this electromagnetic induction fabric causes the magnetic fibers to move away / close, changing the magnetic flux of the conductive fibers and generating an induced electromotive force, thus realizing the combination of electromagnetic induction and a flexible sensor device.

[0022] 2. This invention fully enhances the magnetism of magnetic fibers through magnetization treatment, thereby ensuring that the electromagnetic induction fabric with interlocking wires and magnetic fields can generate sufficient electrical signal changes when stretching / contraction deformation occurs, so as to monitor human movements or external signals such as joint movement and external force pulling.

[0023] 3. The electromagnetic induction fabric of this invention, with its interlocking wires and magnetic fields, features magnetic fibers that are essentially undamaged after prolonged friction due to the conductive fabric covering the magnetic fibers. This results in excellent wear resistance. Furthermore, the magnetic fibers can be replaced / removed as needed, preventing the magnetic force from weakening over time and thus ensuring a weak sensing signal. The sensing method of this invention's interlocking wire and magnetic field electromagnetic induction fabric is convenient, and the complete fabric structure ensures its stability. Moreover, it eliminates the need to stretch the magnetic fibers; induced electromotive force is generated simply by stretching the fabric, significantly extending the lifespan of the self-powered sensing fabric.

[0024] 4. The electromagnetic induction fabric of the present invention, which integrates power supply and sensing on the fabric and clothing by interlocking the conductor and magnetic field, utilizes the flexibility of the fiber to bend and rebound at will, making it easy for the human body to wear. Moreover, it does not require the use of external power supply equipment such as batteries. It can generate electrical signals through human body movements and external forces, and has a wide range of application prospects. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the electromagnetic induction fabric structure with interlocking wires and magnetic fields prepared in Example 1.

[0026] Figure 2 This is a schematic diagram of the electromagnetic induction fabric structure in Example 1, in which the conductor and magnetic field are interlocked.

[0027] Figure 3 This is a schematic diagram of the stretched side of the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1.

[0028] Figure 4 This is a schematic diagram of the shrinkage side of the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1.

[0029] Figure 5 The voltage change detection results are for the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1.

[0030] Figure 6 The voltage change detection results are for the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Comparative Example 1.

[0031] Figure 7 The voltage change detection results are for the electromagnetic induction fabric with interlocking wires and magnetic fields prepared for Comparative Example 2.

[0032] Figure 8 The voltage change detection results are for the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1.

[0033] Figure 9 A schematic diagram of an electromagnetic induction fabric structure in which the conductor and magnetic field are interlocked, prepared for Comparative Example 2.

[0034] Figure 10 This is a schematic diagram of the stretching direction of the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1.

[0035] Figure 11 A schematic diagram of the stretching direction of the electromagnetic induction fabric with interlocking wires and magnetic fields prepared for Comparative Example 2. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0038] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] This invention provides a method for preparing an electromagnetic induction fabric in which conductors and magnetic fields are interlocked, comprising the following steps:

[0040] S1. Pretreated elastic polymer and magnetic particles are mixed in a certain proportion, extruded through a plastic container, and then shaped and magnetized to obtain magnetic fibers.

[0041] S2. Using ordinary yarn as warp and weft, the upper and lower layers are interlaced separately, and after a certain number of interlacing cycles, a first hollow double-layer fabric with a hollow structure is obtained. Then, using ordinary fiber as warp and conductive fiber as weft, the upper and lower layers are interlaced cyclically, and after a certain number of interlacing cycles, a second hollow double-layer fabric containing annular conductive fiber loops perpendicular to the warp direction is obtained. The second hollow double-layer fabric is connected to the first hollow double-layer fabric. The preparation operations of the first hollow double-layer fabric and the second hollow double-layer fabric are repeated to obtain a conductive fabric with several holes along the weft direction. The several annular conductive fiber loops on the conductive fabric are connected to each other and spaced at a certain distance.

[0042] S3. Insert the magnetic fiber prepared in step S1 into the conductive fabric prepared in step S2 through the holes to obtain an electromagnetic induction fabric in which the wire and the magnetic field are interlocked.

[0043] Specifically, in step S1, the magnetization operation involves magnetizing the shaped fiber to be magnetized at a voltage of 1500-3000V for 1-2000ms to obtain the magnetic fiber.

[0044] Specifically, in step S1, the mass ratio of the elastic polymer to the magnetic particles is 80:20 to 20:80; the elastic polymer includes any one of polyvinyl alcohol, polyurethane, polydimethylsiloxane, polymethylvinylsiloxane, polypropylene, polyolefin, and styrene polymer; the magnetic particles include any one of neodymium iron boron magnetic powder, neodymium nickel cobalt magnetic powder, iron oxide magnetic powder, chromium dioxide magnetic powder, and cobalt-iron oxide magnetic powder.

[0045] Specifically, in step S1, the pretreatment operation of the elastic polymer involves dissolving the elastic polymer granules in a corresponding solvent or mixing the raw materials of the elastic polymer in a certain proportion to form an uncured elastic solution, depending on the properties of the elastic polymer; the shaping container is a syringe needle.

[0046] Specifically, in step S2, the conductive fiber includes any one of carbon fiber, graphene fiber, carbon nanotube fiber, silver-plated fiber, copper-plated fiber, gold-plated fiber, aluminum-plated fiber, iron-plated fiber, copper fiber, silver fiber, gold fiber, aluminum fiber, and iron fiber; the ordinary fiber includes any one of cotton fiber, wool fiber, polyester fiber, and nylon fiber; and the conductive fabric, except for the annular conductive fiber loop, is woven with ordinary fibers.

[0047] Specifically, in step S2, the holes in the conductive fabric along the weft direction include a first hole corresponding to the interval area of ​​the annular conductive fiber loop and a second hole near the sidewall boundary of the conductive fabric.

[0048] The present invention also provides an electromagnetic induction fabric in which conductors and magnetic fields are interlocked. The electromagnetic induction fabric in which conductors and magnetic fields are interlocked is prepared according to the preparation method of electromagnetic induction fabric in which conductors and magnetic fields are interlocked, and includes a conductive fabric with several holes along the weft direction and magnetic fibers located in the conductive fabric.

[0049] The preparation method of the electromagnetic induction fabric with interlocking wires and magnetic fields provided by the present invention will be described below with reference to specific embodiments.

[0050] Example 1

[0051] This embodiment provides a method for preparing an electromagnetic induction fabric in which the conductor and magnetic field are interlocked, including the following steps:

[0052] S1. According to the instructions, the purchased polydimethylsiloxane silicone elastomer was mixed with solutions A and B in a mass ratio of 10:1 to obtain uncured polydimethylsiloxane silicone elastomer. Neodymium iron boron magnetic powder was added at the same time. The mixture was extruded through a syringe and dried at 80°C for 2 hours for curing and shaping. The cured and shaped fibers were then magnetized at 2000V for 20ms to obtain magnetic fibers. The mass ratio of polydimethylsiloxane to neodymium iron boron magnetic powder was 20:80.

[0053] S2. Using polyester fibers as warp and weft yarns, the upper and lower layers are interlaced separately, and after a certain number of interlacing cycles, a first hollow double-layer fabric with a hollow structure is obtained, namely... Figure 2 In region A, polyester fiber is used as the warp and copper fiber as the weft. The upper and lower layers are interlaced and interwoven repeatedly for a certain number of cycles to obtain a second hollow double-layer fabric containing annular conductive fiber loops perpendicular to the warp direction. Figure 2 In region B, the second hollow double-layer fabric is connected to the first hollow double-layer fabric; the preparation operations of the first hollow double-layer fabric and the second hollow double-layer fabric are repeated to obtain a conductive fabric with several holes along the weft direction. The holes include first holes corresponding to the interval regions of the annular conductive fiber loops and second holes near the sidewall boundary of the conductive fabric. The several annular conductive fiber loops on the conductive fabric are connected to each other and spaced at a certain distance. Except for the annular conductive fiber loops, the conductive fabric is woven with polyester fibers.

[0054] S3. Insert the magnetic fibers obtained in step S1 into the conductive fabric prepared in step S2 through the holes to obtain an electromagnetic induction fabric in which the wires and magnetic field are interlocked, such as... Figure 1 and Figure 2 As shown.

[0055] like Figures 3-4 As shown, when the electromagnetic induction fabric with interlocking conductors and magnetic fields undergoes stretching / contraction deformation, the magnetic fibers move away from or closer to each other, and the magnetic flux of the conductive fibers changes, thereby generating an induced electromotive force.

[0056] Examples 2-3

[0057] Examples 2 and 3 respectively provide a method for preparing an electromagnetic induction fabric in which the conductor and the magnetic field are interlocked. Compared with Example 1, the mass ratio of polydimethylsiloxane to NdFeB magnetic powder in Example 2 is 50:50, and the mass ratio of polydimethylsiloxane to NdFeB magnetic powder in Example 3 is 80:20. The remaining steps are the same as in Example 1 and will not be repeated here.

[0058] Comparative Examples 1-2

[0059] Comparative Examples 1 and 2 respectively provide a method for preparing an electromagnetic induction fabric in which the conductor and magnetic field are interlocked. Compared with Example 1, step S1 of Comparative Example 1 does not involve magnetization, while in Comparative Example 2, copper fibers are wound around magnetic fibers to form a closed circuit. Figure 9 As shown, the remaining steps are the same as in Example 1, and will not be repeated here.

[0060] The voltage changes generated by deformation of the electromagnetic induction fabrics with interlocking wires and magnetic fields prepared in Example 1 and Comparative Examples 1-2 were detected, and the detection results are as follows: Figures 5-8 As shown.

[0061] like Figure 5 and Figure 6 As shown, after magnetizing the magnetic fibers, under the same continuous bending, the voltage signal generated by the electromagnetic induction fabric with interlocking conductors and magnetic fields increases from approximately ±2–4 μV to approximately ±35–48 μV, indicating a significant increase in voltage variation with deformation. Meanwhile, the electromagnetic induction fabric with interlocking conductors and magnetic fields prepared by winding copper fibers with magnetic fibers in Comparative Example 2 shows a similar voltage variation with bending. Figure 7 The difference is significantly lower than that of the electromagnetic induction fabric with interlocking wires and magnetic fields prepared in Example 1. Figure 8 Additionally, such as Figure 10 and Figure 11 As shown, existing fabrics generate induced electromotive force by stretching magnetic fibers, while the present invention generates induced electromotive force by stretching the fabric itself, without stretching the magnetic fibers, which greatly extends the lifespan of the self-powered sensing fabric.

[0062] In summary, the electromagnetic induction fabric with interlocking conductors and magnetic fields disclosed in this invention and its preparation method involve mixing pretreated elastic polymers and magnetic particles in a certain proportion, followed by shaping and magnetization to obtain magnetic fibers. Simultaneously, using ordinary yarn as warp and weft, the upper and lower layers are separately weft-stitched to prepare a first hollow double-layer fabric. Then, using ordinary fibers as warp and conductive fibers as weft, the upper and lower layers are cyclically weft-stitched to prepare a second hollow double-layer fabric. The second hollow double-layer fabric is connected to the first hollow double-layer fabric, and the preparation operations of the first and second hollow double-layer fabrics are repeated to obtain a conductive fabric with several holes along the weft direction. This invention involves inserting magnetic fibers through holes into conductive fabric to create an electromagnetic induction fabric in which wires and magnetic fields are interlocked. The stretching / contraction of this fabric causes the magnetic fibers to move closer to or further away from each other, changing the magnetic flux of the conductive fibers and generating an induced electromotive force. This combines electromagnetic induction with a flexible sensor. During the fabrication process, magnetization treatment enhances the magnetism of the magnetic fibers, ensuring that the interlocking electromagnetic induction fabric generates sufficient voltage signal changes during stretching / contraction deformation. This voltage signal can then be used to monitor human movements such as joint motion and external forces, or to monitor external signals. This invention integrates power supply and sensing into the fabric and clothing. Utilizing the flexibility of the fibers, it can be bent and spring back arbitrarily, making it easy to wear. Furthermore, it eliminates the need for external power supplies such as batteries, generating electrical signals directly from human movement and external forces, thus offering broad application prospects.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for preparing an electromagnetic induction fabric in which conductors and magnetic fields are interlocked, characterized in that, Includes the following steps: S1. Pretreated elastic polymer and magnetic particles are mixed in a certain proportion, extruded through a plastic container, and then shaped and magnetized to obtain magnetic fibers. S2. Using ordinary yarn as warp and weft yarn, the upper and lower layers are separately interlaced, and after a certain number of cycles of interlacing, a first hollow double-layer fabric with a hollow structure is obtained. Then, using ordinary fibers as warp yarns and conductive fibers as weft yarns, the upper and lower layers are repeatedly interlaced and interwoven for a certain number of cycles to obtain a second hollow double-layer fabric containing annular conductive fiber loops perpendicular to the warp direction. The second hollow double-layer fabric is connected to the first hollow double-layer fabric. The preparation operations of the first hollow double-layer fabric and the second hollow double-layer fabric are repeated to obtain a conductive fabric with several holes along the weft direction. The several annular conductive fiber loops on the conductive fabric are connected to each other and spaced a certain distance apart. S3. Insert the magnetic fiber prepared in step S1 into the conductive fabric prepared in step S2 through the holes to obtain an electromagnetic induction fabric in which the wire and the magnetic field are interlocked. The electromagnetic induction fabric utilizes the stretching / contraction of the interlocking wires and magnetic field of the fabric to move the magnetic fibers away from or towards each other, causing a change in the magnetic flux of the conductive fibers, thereby generating an induced electromotive force.

2. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S1, the magnetization operation involves magnetizing the shaped fiber to be magnetized at a voltage of 1500~3000V for 1~2000ms to obtain the magnetic fiber.

3. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S1, the mass ratio of the elastic polymer to the magnetic particles is 80:20 to 20:

80.

4. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 3, characterized in that: The elastic polymer includes any one of polyvinyl alcohol, polyurethane, polydimethylsiloxane, polymethylvinylsiloxane, polypropylene, and styrene polymers.

5. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 3, characterized in that: The magnetic particles include any one of neodymium iron boron magnetic powder, neodymium nickel cobalt magnetic powder, iron oxide magnetic powder, chromium dioxide magnetic powder, and cobalt-iron oxide magnetic powder.

6. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S2, the conductive fiber includes any one of carbon fiber, graphene fiber, carbon nanotube fiber, silver-plated fiber, copper-plated fiber, gold-plated fiber, aluminum-plated fiber, iron-plated fiber, copper fiber, silver fiber, gold fiber, aluminum fiber, and iron fiber.

7. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S2, the holes in the conductive fabric along the weft direction include a first hole corresponding to the interval area of ​​the annular conductive fiber loop and a second hole near the sidewall boundary of the conductive fabric.

8. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S1, the pretreatment operation of the elastic polymer is to dissolve the elastic polymer granules in a corresponding solvent or to mix the raw materials of the elastic polymer in a certain proportion to form an uncured elastic solution, according to the properties of the elastic polymer.

9. The method for preparing an electromagnetic induction fabric with interlocking conductors and magnetic fields according to claim 1, characterized in that: In step S2, the ordinary fiber includes any one of cotton fiber, wool fiber, polyester fiber and nylon fiber; the conductive fabric is woven with ordinary fibers except for the annular conductive fiber loop.

10. An electromagnetic induction fabric in which conductors and magnetic fields are interlocked, characterized in that, The electromagnetic induction fabric in which the conductor and magnetic field are interlocked is prepared by any one of claims 1-9, comprising a conductive fabric with several holes along the weft direction and magnetic fibers located in the conductive fabric.

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