阅读说明：本技术 柔性导电纤维、柔性导线及其制备方法、可穿戴设备 (Flexible conductive fiber, flexible lead, preparation method of flexible conductive fiber and flexible lead, and wearable device ) 是由 钟君 刘永峰 成贤锴 蔡黎明 朱文亮 周虹 于 2021-08-06 设计创作，主要内容包括：本发明提供柔性导电纤维,包括导电线,所述导电线外表面设有信号屏蔽层；所述导电线形成电信号传输通道；所述信号屏蔽层用以屏蔽外界磁场干扰所述导电线的电信号传输工作。纤维本体通过导电线传输电信号,在导电线外周设置信号屏蔽层,信号屏蔽层用以屏蔽外界磁场对导电线信号传输的干扰,并能够保护微弱信号,提高信号抗干扰性、确保信号质量。纤维本体用于制备穿戴设备本体的导线本体,替代直接采用导电线应用于穿戴设备本体的方案,避免外界磁场干扰了导电线的信号传输。(The invention provides a flexible conductive fiber, which comprises a conductive wire, wherein a signal shielding layer is arranged on the outer surface of the conductive wire; the conductive wires form an electrical signal transmission channel; the signal shielding layer is used for shielding an external magnetic field from interfering the electric signal transmission work of the conducting wire. The fiber body transmits an electric signal through the conductive wire, the signal shielding layer is arranged on the periphery of the conductive wire and used for shielding the interference of an external magnetic field on the signal transmission of the conductive wire, weak signals can be protected, the anti-interference performance of the signals is improved, and the signal quality is ensured. The fiber body is used for preparing a lead body of the wearable device body, replaces a scheme of directly applying a conductive wire to the wearable device body, and avoids an external magnetic field from interfering signal transmission of the conductive wire.)

1. The flexible conductive fiber comprises a fiber body (31), and is characterized in that the fiber body (31) comprises a conductive wire, and a signal shielding layer (313) is arranged on the outer surface of the conductive wire;

the conductive wires form an electrical signal transmission channel; the signal shielding layer (313) is used for shielding an external magnetic field from interfering the electric signal transmission work of the conductive wire.

2. The flexible conductive fiber of claim 1, wherein the conductive wire comprises a flexible conductive core and a first insulating layer (312) disposed on an outer peripheral surface of the flexible conductive core.

3. The flexible conductive fiber of claim 2, wherein the flexible conductive core comprises a number of conductive filaments (311); the conductive wire (311) comprises a fiber wire (3111) and a metal conductive layer (3112) arranged on the outer surface of the fiber wire (3111); several conductive filaments (311) are twisted and wound to form a flexible conductive core.

4. The flexible conductive fiber of claim 3, wherein the fiber filaments (3111) comprise aramid fibers or PBO fibers; the flexible conductive core comprises 100 and 300 conductive wires (311).

5. The flexible conductive fiber of claim 1, wherein the signal shielding layer (313) is a silver plated layer.

6. The flexible conductive fiber according to any one of claims 1 to 5, wherein the signal shielding layer (313) covers the entire outer circumferential surface of the conductive wire;

or, the signal shielding layer (313) is in a grid shape and covers the peripheral surface of the conductive wire;

or the signal shielding layers (313) are arranged on the peripheral surface of the conductive wire in an array.

7. A flexible lead comprising a lead body (30) for wearing a device body (100); characterized in that the lead body (30) comprises:

flexible conductive fibers according to any one of claims 1 to 6;

a braided wire (32) comprising at least two yarns; at least two yarns are interwoven to form the braided wire (32) having a plurality of braiding eyelets;

the fiber body (31) is inserted into the weaving eyelets of the weaving wires (32) in a bending shape so as to be woven with the weaving wires (32) to form an integral structure.

8. A flexible conductor according to claim 7, characterized in that the number of said fibrous bodies (31) is 2-4.

9. A method of making a flexible conductor according to claim 7 or 8, comprising the steps of:

s1, forming the signal shielding layer (313) outside the conductive wire to obtain the fiber body (31);

s2, at least two yarns are woven with each other to form the weaving wire (32) with a plurality of weaving eyelets;

s3, inserting the fiber body (31) into the weaving eyelets of the weaving wires (32) in a bending shape, and weaving to obtain the lead body (30).

10. A wearable device comprising at least one flexible lead according to claim 7 or 8, electrically connected by a lead body (30).

Technical Field

The invention relates to the technical field of flexible electronics, in particular to flexible conductive fibers, a flexible lead, a preparation method of the flexible conductive fibers and the flexible lead, and wearable equipment.

Background

With people's health concerns, people are more and more concerned about their physiological health status, and wearable devices are thus entering the market. With the rise of wearable devices, flexible electronics is receiving more and more attention. Among them, the flexibility of the wire is also one of the directions that the skilled person continuously strives to study. The existing wire is manufactured by adopting a metal wire structure, so that the flexibility is limited, and the bending resistance is poor; some use flexible fiber wire to provide flexibility, and the stability of transmitting electric signal is influenced by external electromagnetic field.

Disclosure of Invention

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The invention provides a flexible conductive fiber, which comprises a fiber body, wherein the fiber body comprises a conductive wire, and a signal shielding layer is arranged on the outer surface of the conductive wire;

the conductive wires form an electrical signal transmission channel; the signal shielding layer is used for shielding an external magnetic field from interfering the electric signal transmission work of the conducting wire.

Preferably, the conductive wire comprises a flexible conductive core and a first insulating layer arranged on the outer peripheral surface of the flexible conductive core.

Preferably, the flexible conductive core comprises a number of conductive filaments; the conductive wire comprises a fiber wire and a metal conductive layer arranged on the outer surface of the fiber wire; a plurality of conductive wires are twisted and wound to form a flexible conductive core.

Preferably, the fiber filaments comprise aramid fibers or PBO fibers; the flexible conductive core comprises 100-300 conductive wires.

Preferably, the signal shielding layer is a silver plated layer.

Preferably, the signal shielding layer covers the entire outer circumferential surface of the conductive wire;

or, the signal shielding layer is in a grid shape and covers the peripheral surface of the conductive wire;

or the signal shielding layers are arranged on the peripheral surface of the conductive wire in an array. The second object of the invention is to provide a flexible lead, which comprises a lead body for wearing the equipment body; the lead body includes:

flexible conductive fibers as described above;

a braided wire comprising at least two yarns; at least two yarns are mutually woven to form the weaving wire with a plurality of weaving eyelets;

the fiber body is inserted into the weaving eyelets of the weaving wires in a bending shape so as to weave the weaving wires into an integral structure.

Preferably, the number of the fiber bodies is 2-4.

It is a third object of the present invention to provide a method for preparing a flexible wire as described above, comprising the steps of:

s1, forming the signal shielding layer outside the conductive wire to obtain the fiber body

S2, at least two yarns are mutually woven to form the weaving wire with a plurality of weaving eyelets;

and S3, inserting the fiber body into the weaving eyelets of the weaving wires in a bending shape, and weaving to obtain the lead body.

The fourth purpose of the present invention is to provide a wearable device, which comprises at least one flexible wire as described above, and the wire body is used for electrical connection.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a flexible conductive fiber, wherein a fiber body transmits an electric signal through a conductive wire, a signal shielding layer is arranged on the periphery of the conductive wire and used for shielding the interference of an external magnetic field on the signal transmission of the conductive wire, a weak signal can be protected, the anti-interference performance of the signal is improved, and the signal quality is ensured. The fiber body is used for preparing a lead body of the wearable device body, replaces a scheme of directly applying a conductive wire to the wearable device body, and avoids an external magnetic field from interfering signal transmission of the conductive wire.

In a preferred scheme, the fiber body is provided with a flexible conductive core, a first insulating layer, a signal shielding layer and a second insulating layer from inside to outside in sequence. The flexible conductive core has good flexibility and good electrical property and is used for transmitting electrical signals; in addition, the outer fiber yarns are pressed to the inner fiber yarns to generate centripetal force, and the fiber yarns in the conductive yarns obtain friction along the length direction of the conductive yarns, so that the strength of the conductive yarns is increased. The first insulating layer is used for preventing the flexible conductive core from contacting the signal shielding layer to generate short circuit. The second insulating layer is used for preventing the signal shielding layer from contacting other electronic elements or electrical appliances or human body sweat to introduce conduction interference. The fiber body has good conductivity, flexibility, stretch resistance, folding resistance, signal interference resistance, good use safety and water resistance, and shields an external magnetic field to ensure the stability of signal transmission.

The invention provides a flexible lead, which is characterized in that a fiber body is woven in a braided wire to form a lead body, the fiber body is distributed in a bent shape to improve the flexibility of the lead body, so that the elasticity of the lead body is ensured, and the lead body has good conductivity, flexibility, stretch resistance, folding resistance and signal interference resistance. The initial resistivity of the lead body is 0.1-10 s/cm; 50% deformation and 1000 times of stretching, and the resistivity change is less than 5%.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a structural cross-sectional view of a fiber body of the present invention;

fig. 2 is a structural sectional view of a conductive yarn of the present invention;

fig. 3 is a structural front view of the lead of the present invention;

FIG. 4 is a photograph of a wire of the present invention;

FIG. 5 is a process flow diagram of a method of making a lead body according to the present invention;

FIG. 6 is a process flow diagram of a method of making a fiber body of the present invention;

FIG. 7 is a front view of an inner surface of a body of a wearable device in an embodiment of the invention;

fig. 8 is a schematic diagram illustrating a connection relationship between a signal processing device and a signal acquisition device according to an embodiment of the present invention.

In the figure: 100. a wearable device body;

10. a signal processing device;

20. an electrode assembly;

30. a lead body; 31. a fiber body; 311. a conductive filament; 3111. fiber yarn; 3112. a metal conductive layer; 312. a first insulating layer; 313. a signal shielding layer; 314. a second insulating layer;

40. a garment;

50. a temperature sensor;

60. a respiration sensor.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Example 1

The invention provides a flexible conductive fiber, as shown in fig. 1, comprising a fiber body 31, wherein the fiber body 31 comprises a conductive wire, and a signal shielding layer 313 is arranged on the outer surface of the conductive wire;

the conductive wires form an electrical signal transmission channel; the signal shielding layer 313 is used for shielding an external magnetic field from interfering with the electric signal transmission operation of the conductive wire. Specifically, in the wearing equipment field, the wire structure of adoption is the electric conductor that cladding insulating material usually, and insulating material is used for preventing the electric conductor from contacting other electrically conductive objects, and such wire structure signal transmission easily receives external magnetic field interference. The signal shielding layer 313 is arranged on the outer surface of the conductive wire and used for shielding the interference of an external magnetic field on the signal transmission of the flexible conductive core, so that weak signals can be protected, the anti-interference performance of the signals is improved, and the quality of the signals is ensured.

In one embodiment, as shown in fig. 1, the conductive wire includes a flexible conductive core and a first insulating layer 312 disposed on an outer peripheral surface of the flexible conductive core. The conductive core has good flexibility and good electrical property and is used for transmitting electrical signals; the first insulating layer 312 is used to separate the flexible conductive core from the signal shielding layer 313, so as to prevent the flexible conductive core from contacting the signal shielding layer 313 to cause short circuit, thereby avoiding conduction interference caused by conduction of human sweat.

In one embodiment, as shown in fig. 1 and fig. 2, the flexible conductive core includes a plurality of conductive filaments 311; the conductive wire 311 includes a fiber wire 3111 and a metal conductive layer 3112 coated on an outer surface of the fiber wire 3111; several conductive filaments 311 are twisted and wound to form a flexible conductive core. Specifically, the fiber yarn 3111 has good flexibility, and further the conductive yarn 311 is endowed with flexibility; the flexible conductive core is formed by twisting and winding a plurality of conductive wires 311 with good flexibility, and the formed flexible conductive core has good flexibility and good electrical property and is used for transmitting electrical signals; further, the outer fiber is pressed against the inner fiber to generate a centripetal force, and the fibers in the conductive yarn 311 are rubbed in the longitudinal direction thereof, thereby increasing the strength of the conductive yarn 311.

In one embodiment, the fiber filaments 3111 comprise aramid fibers or PBO fibers having a diameter of 10 μm to 50 μm; the flexible conductive core comprises 100 pieces and 300 pieces of the conductive wires 311. Specifically, the aramid fiber has the characteristics of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and ageing resistance; the PBO fiber has high strength, heat resistance and flame retardancy, and has good mechanical properties and chemical properties. The aramid fiber or PBO fiber can ensure long service life under repeated wearing or repeated washing. The lead body 30 manufactured by subsequent processing is high temperature resistant, can be suitable for a high temperature welding process, is also suitable for sewing or conductive paint bonding, is convenient for the connection of the lead body 30 and an electronic element, and has wide application range.

In one embodiment, the metal conductive layer 3112 is a silver plated layer with a thickness of 0.1 μm to 2 μm. The silver coating is easy to process and control in thickness, and can be formed by chemical plating. The thickness of the metal conductive layer 3112 is 0.1 μm-2 μm, and the prepared conductive wire 311 has good conductivity; by controlling the thickness of the metal conductive layer 3112, on one hand, the conductive wire 311 is prevented from being too thin, so that the formed flexible conductive core has higher impedance, and subsequently acquired signals are weakened; on the other hand, the conductive wires 311 are prevented from being too thick, so that the diameter of the flexible conductive core formed by twisting and winding the conductive wires 311 is large, and a large parasitic capacitance is generated during subsequent wiring to cause signal attenuation.

In one embodiment, the signal shielding layer 313 is a metal shielding layer with a thickness of 3 μm to 5 μm. Preferably, the signal shielding layer 313 is silver plated, the silver plated layer is easy to process and control the thickness, and the silver plated layer can be formed by chemical plating.

In one embodiment, the signal shielding layer 313 covers the entire outer circumferential surface of the conductive line;

or, the signal shielding layer 313 is in a grid shape and covers the peripheral surface of the conductive wire;

or, the signal shielding layers 313 are arranged on the outer peripheral surface of the conductive wire in an array.

Specifically, when the signal shielding layer 313 covers the entire outer circumferential surface of the conductive line, the magnetic field interference resistance is improved. When the signal shielding layer 313 is in a grid shape, the magnetic field interference resistance is good, and the weight of the fiber body 31 is reduced. When the signal shielding layers 313 are arranged on the outer peripheral surface of the conductive wire in an array, the weight of the fiber body 31 is reduced, and the fiber body has certain magnetic field anti-interference capability.

In one embodiment, the first insulating layer 312 and/or the second insulating layer 314 is selected from at least one of a silicone rubber layer, a polyurethane layer, a polyamide layer, a polyethylene layer, and a polyimide layer. Specifically, silicone rubber has excellent electrical insulation properties, corona resistance, arc resistance, and water resistance; the polyurethane has insulating and heat-insulating properties and waterproof properties; the polyamide has excellent electrical insulation performance, weather resistance, waterproofness and mechanical properties; the polyethylene has good electrical insulation performance and waterproofness; polyimide has excellent electrical insulation performance and good water resistance. Any one of the materials is adopted to form the first insulating layer 312 on the outer layer of the flexible conductive core, so that the contact between external water vapor and the flexible conductive core is isolated while the insulating effect is achieved, and the fiber body 31 can be repeatedly washed by water. Any material is adopted to form the second insulating layer 314 on the outer layer of the signal shielding layer 313, so that the contact between external water vapor and the signal shielding layer 313 is isolated while the insulating effect is achieved, and the normal use of the signal shielding layer 313 is ensured. In addition, the second insulating layer 314 also plays a role of protection and buffering. The two insulating layer structures ensure the insulating and waterproof performance and the water resistance of the fiber body 31, and avoid the conduction interference caused by the conduction of human sweat.

Further, the thickness of the first insulating layer 312 and/or the second insulating layer 314 is 200 μm to 300 μm, so that the thickness of the fiber body 31 is reduced while the insulating property of the first insulating layer 312 and/or the second insulating layer 314 is ensured, the miniaturization design of the fiber body 31 is facilitated, and further, the foreign body sensation brought by the wire body 30 to a user is reduced while the wire body 30 made of the fiber body 31 is routed in the wearable device body 100 for electrical connection.

Specifically, in one embodiment, as shown in fig. 1 and 2, the fiber body 31 includes:

the conductive wire 311 comprises a fiber wire 3111 and a metal conductive layer 3112 coated on the outer surface of the fiber wire 3111; several conductive filaments 311 are twisted and wound to form a flexible conductive core.

A first insulating layer 312 coated on the outer peripheral surface of the flexible conductive core;

a signal shielding layer 313 covering the outer peripheral surface of the first insulating layer 312; the first insulating layer 312 is used to separate the flexible conductive core from the signal shielding layer 313;

a second insulating layer 314 covering the outer peripheral surface of the signal shielding layer 313 for separating the signal shielding layer 313 from external electronic components;

the flexible conductive core forms an electric signal transmission channel; the signal shielding layer 313 is used for shielding an external magnetic field from interfering with the electric signal transmission operation of the flexible conductive core.

The first insulating layer 312, the signal shielding layer 313 and the second insulating layer 314 are sequentially coated outside the flexible conductive core, and the second insulating layer 314 is used for separating the signal shielding layer 313 from the outside, so that when the fiber body 31 contacts other electronic elements or electrical appliances, the signal shielding layer 313 directly contacts other electronic elements or electrical appliances to generate electrical transmission, and the normal operation of the fiber body 31 and other electronic elements or electrical appliances is influenced. That is, the fiber body 31 has good conductivity and flexibility through the flexible conductive core, the first insulating layer 312, the signal shielding layer 313 and the second insulating layer 314 which are sequentially arranged from inside to outside, and shields an external magnetic field to ensure the stability of signal transmission.

Example 2

The present invention provides a flexible lead, as shown in fig. 1 to 4, including a lead body 30 for wearing a device body 100; the lead body 30 includes:

flexible conductive fibers as described above;

a braided wire 32 comprising at least two yarns; at least two yarns are interwoven to form the braided wire 32 having a plurality of braided eyelets;

the fiber body 31 is inserted into the weaving eyelets of the weaving wires 32 in a curved shape so as to weave with the weaving wires 32 into an integral structure.

Specifically, at least two yarns are fixed on a knitting machine through a doubling machine, and are knitted through the knitting machine, the knitting density is determined according to the production process, and a plurality of knitting eyelets (not shown in the figure) are arranged in the knitting line 32 formed by knitting. The fiber body 31 is woven to form the wire body 30 by sequentially passing through a plurality of weave eyelets on the weaving wire 32. The fiber body 31 is fixed on the braided wire 32 in a bending shape, when the lead body 30 is stretched or twisted along with the wearable device body 100, the fiber body 31 can be stretched or twisted, so that the elasticity of the lead body 30 is improved, and the lead body 30 is anti-folding and anti-stretching and is suitable for flexible wearable devices.

Further, the fiber body 31 extends in a wave shape, and has a symmetrical structure, so that the resistance values of all parts of the lead body 30 are uniform, and the signal transmission performance is stable.

In one embodiment, the number of the fiber bodies 31 is 2-4, so as to ensure that the prepared lead body 30 has good electrical conductivity. For the miniaturized design of the lead body 30, the number of the fiber bodies 31 is two.

In one embodiment, for the compact design of the lead body 30, the number of the braided wires 32 is two, and the fiber body 31 extending in a curved shape can be stably fixed.

In one embodiment, to ensure the elasticity of the lead body 30, the braided wire 32 is braided with a yarn having elasticity. Furthermore, the yarns are spandex yarns and have good elasticity.

The lead body 30 provided by the invention has the advantages of water resistance, tensile resistance, folding resistance and signal interference resistance. When the fiber body 31 is sequentially provided with the flexible conductive core, the first insulating layer 312, the signal shielding layer 313 and the second insulating layer 314 from inside to outside, the initial resistivity of the prepared lead body 30 is 0.1-10 s/cm; 50% deformation and 1000 times of stretching, and the resistivity change is less than 5%. The electrical connection mode with the electronic element includes but is not limited to high temperature welding or sewing connection or conductive paint connection process, and the application range is wide.

Example 3

The present invention provides a method for preparing a flexible wire as described above, as shown in fig. 5, comprising the steps of:

s1, forming the signal shielding layer 313 outside the conductive wire to obtain the fiber body 31;

s2, at least two yarns are woven with each other to form the weaving wire 32 with a plurality of weaving eyelets;

and S3, inserting the fiber body 31 into the weaving eyelets of the weaving wires 32 in a bending shape, and weaving to obtain the lead body 30.

Further, as shown in fig. 6, the preparation of the fiber body 31 includes the following steps:

s11, performing chemical plating treatment on the surface of the fiber yarn 3111 to form a metal conductive layer 3112, and preparing the conductive yarn 311;

s12, fixing one end of each of the conductive wires 311, rotating the other end of each of the conductive wires, and twisting and winding to obtain the flexible conductive core;

s13, passing the flexible conductive core through a die containing a molten insulating material, and cooling to form a coating structure of the first insulating layer 312 to obtain a conductive wire;

s14, plating a metal layer on the outer peripheral surface of the conductive wire to form a signal shielding layer 313;

s15, cladding the fiber with the molten insulation material again, and cooling the fiber to form the second insulation layer 314, thereby obtaining the fiber body 31.

In one embodiment, the preparation of the conductive filament 311 includes the following steps:

chemical silver plating treatment: putting the whole fiber strand 3111 into a mixed solution of absolute ethyl alcohol and purified water, wherein each liter of the mixed solution contains 5-25g of absolute ethyl alcohol; coarsening for 30-90min at 60-80 ℃, and then washing to be neutral by water; placing the coarsened fiber tows into an acid solution with the volume concentration of 20-100m1/L, and hydrolyzing for 10-80min at the temperature of 40-80 ℃; then washing with water to neutrality, putting the fiber bundle after hydrolysis treatment into a mixed solution containing 5-20ml of hydrochloric acid, 0.1-1g of palladium chloride, 10-30g of stannous chloride and purified water per liter of mixed solution, and activating with palladium salt for 10-30min at 40-80 ℃; putting the fiber tows activated by the palladium salt into a mixed solution containing 10-100ml of hydrochloric acid, 1-6g of sodium hypophosphite and purified water per liter of mixed solution, reducing for 1-5min at room temperature, and then washing with water to be neutral; placing the fiber tows after reduction treatment into chemical silver plating solution containing 1-5g of silver nitrate, 0.02-0.5g of sodium hydroxide, 1.5-10ml of ammonia water, 0.lg-5g of complexing agent, 3-20g of reducing agent and purified water per liter of chemical silver plating solution, chemically plating silver for 30-90min at the temperature of 30-60 ℃, then washing the chemical silver plating solution to be neutral by water, and air-drying or drying the chemical silver plating solution to obtain the conductive wire 311;

wherein the acid solution is at least one selected from hydrochloric acid, nitric acid and sulfuric acid solution; the complexing agent is ethylene diamine tetraacetic acid monosodium; the reducing agent is at least one selected from glucose, sodium tartrate and potassium sodium tartrate.

Further, the preparation of the conductive wire 311 further includes thickening the silver-plated layer on the surface of the fiber wire by using electroplating or magnetron sputtering treatment or vacuum evaporation treatment to increase the conductivity of the conductive wire 311.

In one embodiment, the coating of the first insulating layer 312 specifically includes the following steps:

preparing insulating material particles, placing the insulating material particles in a mould, heating and melting, passing the flexible conductive core through the mould at a speed of 1-5 m/s, so that the outer peripheral surface of the flexible conductive core is coated with the molten insulating material, and cooling and solidifying the molten insulating material to form the first insulating layer 312 through natural cooling or ventilation cooling.

In one embodiment, the signal shielding layer 313 is formed by a magnetron sputtering process or a vacuum evaporation process.

In one embodiment, the coating of the second insulating layer 314 specifically includes the following steps:

preparing insulating material particles, placing the insulating material particles in a mould, heating and melting, allowing the semi-finished product prepared in the step S4 to pass through the mould at a speed of 1-5 m/S, coating the surface of the semi-finished product with the molten insulating material, and naturally cooling or cooling with ventilation so that the molten insulating material is cooled and solidified to form the second insulating layer 314.

The preparation method provided by the invention is simple in process, easy to operate and suitable for batch production. The manufactured lead body 30 has good conductivity, flexibility, strength and signal interference resistance.

Example 4

The invention provides a wearable device, as shown in fig. 1 to 8, comprising a wearable device body 100, wherein the wearable device body 100 comprises at least one flexible wire as described above, and the wire body 30 is adopted to realize electrical connection.

In an embodiment, the wearable device body 100 adopts the garment 40 as a carrier, and is highly wearable.

In one embodiment of the present invention, the substrate is,

the garment 40 includes:

the signal acquisition device is used for acquiring human body bioelectricity signals;

and the signal processing device 10 is used for processing the human body bioelectricity signals acquired by the signal acquisition device. A flexible cloth is arranged between the signal processing device 10 and the skin of the human body to avoid discomfort of the user caused by the direct contact of the signal processing device 10 with the skin of the human body.

In one embodiment, the signal acquisition device comprises five electrode assemblies 20 for detecting electrocardiosignals, a temperature sensor 50 for detecting the current body temperature, and a respiration sensor 60 for detecting respiration strain, wherein the respiration sensor 60 is in a belt shape and is arranged between the fabrics at two sides; the five electrode assemblies 20 are used for collecting electrocardiosignals, and the two electrode assemblies 20 arranged close to the chest are also used for detecting the impedance of the chest; the remaining three electrode assemblies 20 are disposed corresponding to the left lower rib, the right lower abdomen, and the left lower abdomen, respectively. The lead bodies 30 are nine in number, five of which are from five electrode assemblies 20. The signal processing device 10 receives and processes the electrocardiosignals collected by the five electrode assemblies 20, the temperature electrical signals collected by the temperature sensor 50, the respiratory strain electrical signals collected by the respiratory sensor 60 and the thoracic impedance electrical signals collected by the two electrode assemblies 20 close to the chest, so as to realize the monitoring of three-lead electrocardio, one-lead respiration and one-lead temperature; wherein the thoracic impedance multiplexes two electrodes in the three lead electrodes.

The signal processing device further comprises a main control module, a storage module, a Bluetooth module, an AD module and a power module. When the signal processing device is electrically connected with the signal acquisition device of the garment 40 through a wire, the human body bioelectricity signals acquired by the signal acquisition device are transmitted to the AD module. Specifically, the AD module is electrically connected with the signal acquisition device through a wire and used for receiving human body bioelectricity signals acquired by the signal acquisition device, carrying out analog-to-digital conversion on the human body bioelectricity signals and converting the human body bioelectricity signals into digital signals. The main control module is electrically connected with the AD module, the storage module, the Bluetooth module and the power module respectively. The main control module is used for receiving the digital signals processed by the AD module and converting the digital signals into a data form required by a user through data analysis and operation. The storage module is used for storing data formed after the processing of the main control module. The Bluetooth module is connected with the remote intelligent terminal device through a wireless signal and used for sending data processed by the main control module to the remote intelligent terminal device. The power module is used for supplying power to other modules.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.