Preparation method of multifunctional textile-based sports sweat monitoring intelligent hair band

Abstract

The invention discloses a preparation method of a multifunctional textile-based sports sweat monitoring intelligent hair band, and relates to the technical field of intelligent wearing. According to the hair band, water-absorbing textile fibers are adopted as a sweat collecting part, the surface of the sweat collecting part is coated with a conductive material to form a flexible electrode sensing layer, and meanwhile, a selective recognition material is modified to detect sweat components such as glucose, the pH value, Na < + > and K < + >. In addition, the textile-based temperature sensor is prepared based on a conductive filament or conductive coating composite technology. The hair band integrates the sweat sensor, the temperature sensor and the inertial sensor, can monitor the movement distance, the stride frequency, the step speed, the step number and the calorie consumption, fixes the inertial sensor in a bonding mode through liquid silica gel, and enables a collector to be close to the forehead through the combination of a hook-and-loop fastener and a hair band base body. Through material innovation, process optimization and system integration, unification of comfort, functionality and economical efficiency is achieved, and an efficient and universal technical scheme is provided for development of intelligent sports wearable equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent wearable devices, and particularly relates to a preparation method of a multifunctional textile-based sports sweat monitoring intelligent headband. Background Art

[0002] An intelligent sports sweat monitoring headband is worn on the head to real-time monitor indicators such as the sweat components (glucose, sodium ions, potassium ions, pH value), movement distance, step frequency, step speed, number of steps, sweat components and calories of athletes, analyze the physical condition and movement monitoring, help athletes adjust training plans, prevent overtraining, and thus optimize sports performance and improve competitive level. It can also be used for early health problems such as dehydration or electrolyte imbalance, etc., and is an important tool for daily health management.

[0003] Currently, the portable products with sweat monitoring functions on the market mainly rely on sweat test patches, but there are still many disadvantages and deficiencies. First of all, the wearing comfort of patch-type products is poor. Since it needs to be directly pasted on the skin surface, long-term wearing may cause discomfort. Especially during exercise, the stretching and friction of the skin may cause a foreign body sensation, affecting the use experience. In addition, the air permeability of such patches is insufficient. Most materials are difficult to balance air permeability and adhesiveness, and the skin in the wearing area is prone to being stuffy and airtight. Long-term use may cause skin discomfort and even trigger allergic or irritant reactions.

[0004] Secondly, the sweat test patch is prone to falling off after sweating, especially during heavy sweating or strenuous exercise. Due to the wetting effect of sweat, the adhesion of the patch will be reduced, making it difficult to maintain stability, thus affecting the continuity and accuracy of monitoring. In addition, the service life of such patches is limited, usually for one-time or short-term use. Frequent replacement not only increases the use cost, but also causes a certain burden on the environment.

[0005] In terms of functions, the current sweat test patches mainly focus on monitoring functions such as the total amount of sweat and the proportion of each component in the lost body fluid, but often lack the ability to monitor sports data such as the number of steps and step frequency, and cannot provide a comprehensive sports assessment. This results in that users need to rely on other devices (such as smart watches, sports bracelets) at the same time to supplement sports data when using, which is not conducive to the integrated development of products. Summary of the Invention

[0006] Aiming at the problems that the current portable sweat monitoring products on the market mainly rely on sweat test patches, and still have problems such as poor wearing comfort, insufficient air permeability, easy to fall off, and limited service life, the present invention provides a preparation method of a multifunctional textile-based sports sweat monitoring intelligent headband.

[0007] The present invention is implemented as follows. A method for preparing a multifunctional textile-based sports sweat monitoring intelligent headband, characterized by comprising the following steps:

[0008] S1. Preparation of sweat monitoring fibers:

[0009] Use water-absorbent textile fibers as the sweat collection part, and the water-absorbent textile fibers are selected from one or more of cotton fibers, viscose fibers, acetate fibers, polyester / cotton blended fibers, polyvinyl alcohol fibers or cuprammonium fibers;

[0010] Coat the surface of the sweat collection part with a conductive material to form a flexible electrode sensing layer; the conductive material includes carbon nanotubes, graphene, metal nanoparticles, conductive filaments or conductive coatings;

[0011] Modify the electrode surface of the flexible electrode sensing layer with a selective recognition material for detecting glucose, pH value, Na+ or K+ in sweat;

[0012] S2. Preparation of textile-based temperature sensors:

[0013] Use conductive filaments or conductive coatings to composite the conductive material into the sweat monitoring fibers to form a temperature sensor;

[0014] S3. Assembly of the collector and the headband:

[0015] Integrate the sweat sensor, temperature sensor and inertial sensor into the collector housing, and the inertial sensor is used to count the movement distance, step frequency, step speed, number of steps and calorie consumption;

[0016] Fix the inertial sensor on the surface of the collector housing through a liquid silicone bonding process;

[0017] The collector is combined with the headband matrix through Velcro, and the back of the collector is close to the forehead.

[0018] In the above technical solution, preferably, the conductive material is coated on the surface of the sweat collection part through inkjet printing, screen printing, electrostatic spraying, magnetron sputtering or electrochemical deposition process; through knitting, embroidery, sewing, screen printing, electrostatic spraying or magnetron sputtering process, the conductive material is composited into the sweat monitoring fibers to form a temperature sensor.

[0019] In the above technical solution, preferably, the temperature coefficient of resistance (TCR) of the conductive material is 1×10-3 - 5×10-3 K-1; the curing temperature for fixing the inertial sensor on the surface of the collector housing through the liquid silicone bonding process is 40 - 80 °C, and the curing time is 0.5 - 5 hours.

[0020] In the above technical solution, preferably, the process parameters of the inkjet printing are as follows: the inkjet speed is 3 - 20 cm / s, and the droplet volume is 10 - 50 nL; the process parameters of the screen printing are as follows: the gap distance of the squeegee is 10 - 50 microns; the process parameters of the magnetron sputtering are as follows: the sputtering intensity is 5 - 6000 W, the sputtering time is 1 - 10 minutes, and the vacuum degree is 10^(-2) - 10^(-5) Pa.

[0021] In the above technical solution, preferably, the selective recognition material includes a specific reaction enzyme for glucose detection; or includes a Na⁺, K⁺ ion selective membrane for Na⁺, K⁺ detection.

[0022] In the above technical solution, preferably, the conductive coating is conductive silver paint or conductive graphene paint, and the conductive filament is silver - plated conductive yarn, carbon nanotube yarn or graphene yarn.

[0023] In the above technical solution, preferably, the inertial sensor is fixed through the following steps: scrape liquid silicone onto the surface of the collector housing, heat it to a semi - solid state at a temperature of 40 - 80 °C for 0.5 - 5 hours; place the inertial sensor on the surface of the semi - solid silicone, and continue heating and curing until it is completely bonded.

[0024] The preparation method of the multifunctional textile - based sports sweat monitoring smart headband proposed by the present invention has the following remarkable advantages and effects:

[0025] First, using a textile - based material as the core carrier, its advantages of breathability and comfort are fully utilized. By carefully selecting water - absorbent textile fibers as the sweat collection layer, it can not only efficiently adsorb human sweat, but also avoid the skin discomfort or patch detachment problems caused by poor breathability of traditional patch - type monitoring devices, especially suitable for long - term sports wear. At the same time, the flexibility of the textile material has a high degree of fit with the human skin, which can reduce the foreign body sensation caused by movement friction and significantly improve the wearing comfort.

[0026] Second, through an innovative integration process, a high degree of integration of micro - sensors and textile fibers is achieved. The sweat sensor, temperature sensor and inertial sensor are embedded in the fabric through various processes such as inkjet printing, magnetron sputtering, knitting and embroidery, which not only retains the lightweight characteristics of the fabric, but also ensures the stability and sensitivity of the sensors.

[0027] Third, the preparation method is both flexible and scalable. Through modular design, the sensor combination and process parameters can be quickly adjusted according to specific application scenarios.

[0028] Finally, this preparation method simplifies the complex production process of traditional smart wearable devices and reduces costs. Through the in-situ integration of the textile substrate and the sensor, the additional assembly steps are eliminated, and the Velcro connection design facilitates the disassembly and maintenance of the collector. In addition, the all-textile-based structure does not rely on a rigid circuit board, further reducing the device weight and extending the service life.

[0029] In summary, through material innovation, process optimization, and system integration, the present invention realizes the unity of comfort, functionality, and economy, providing an efficient and universal technical solution for the development of smart sports wearable devices. Brief Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the headband described in the present invention. Detailed Description of the Preferred Embodiments

[0031] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] To solve the problems that the current portable sweat monitoring products on the market mainly rely on sweat test patches, and still have problems such as poor wearing comfort, insufficient breathability, easy detachment, and limited service life, the present invention specifically provides a preparation method for a multifunctional textile-based sports sweat monitoring smart headband. To further illustrate the structure of the present invention, it is described in detail below with reference to the drawings:

[0033] A preparation method for a multifunctional textile-based sports sweat monitoring smart headband includes the preparation of sweat monitoring fibers, the preparation of textile-based temperature sensors, and the assembly of the collector and the headband.

[0034] Preparation of sweat monitoring fibers:

[0035] An absorbent textile fiber is used as the sweat collection part, and the absorbent textile fiber is selected from one or more of cotton fiber, viscose fiber, acetate fiber, polyester / cotton blended fiber, polyvinyl alcohol fiber, or cuprammonium fiber. A conductive material is coated on the surface of the sweat collection part to form a flexible electrode sensing layer; the conductive material includes carbon nanotubes, graphene, metal nanoparticles, conductive filaments, or conductive coatings. A selective recognition material is modified on the electrode surface of the flexible electrode sensing layer for detecting glucose, pH value, Na+, or K+ in sweat.

[0036] Specifically, the preparation of the sweat monitoring fiber includes a sweat collection part, a flexible electrode sensing part, and a circuit connection. Among them, the sweat collection part is used to collect the sweat excreted by the human body. A water-absorbent textile fiber is used as the sweat collection part, and one or several of cotton fiber, viscose fiber, acetate fiber, polyester / cotton blended fiber, polyvinyl alcohol fiber, cuprammonium fiber, etc. can be selected. The flexible electrode sensing part is the core detection part, and there are three preparation schemes. Scheme one, if the electrode is a powder material such as carbon nanotubes, graphene, metal nanoparticles, etc., it is coated on the surface of the sweat collection fiber through processes such as inkjet printing, screen printing, electrostatic spraying, and magnetron sputtering. Using the inkjet printing technology, according to the electrode size structure, the dripping inkjet is positioned and released, with a speed of 3 - 20 cm / s and a released dripping volume of 10 - 50 nL; using the screen printing process, according to the electrode size structure, a planar screen printing stencil is designed, the conductive coating is placed on the planar screen, and printing treatment is carried out with a squeegee, and the gap distance of the squeegee is 10 - 50 microns; or using electrostatic spraying, according to the electrode size structure, the spraying thickness is designed, with an electrostatic field of 5 - 50 kV and an air flow rate of 10 - 70 m / s; or using the magnetron sputtering process, according to the electrode size structure, a magnetron sputtering template is designed, the magnetron sputtering intensity of thiophene is 5 - 6000 W, the magnetron sputtering time is 1 - 10 minutes, and the vacuum degree is 10 -2 -10 -5 Pa. Scheme two, if the electrode is a conductive filament, it is compounded into the sweat collection fiber through processes such as knitting, weaving, embroidery, sewing, etc. Scheme three, if the electrode material is polyaniline (PANI), etc., the electrochemical deposition technology can be used, with a voltage of 0.7 - 1.1xx, a deposition time of 20 - 40 minutes, and the solution composition being 0.1 - 1M sulfuric acid and 0.1 - 1M aniline. For the circuit connection, the wire is connected to the sensing electrode and also connected to the power supply.

[0037] Preparation of the textile-based temperature sensor:

[0038] Using a conductive filament or a conductive coating, the conductive material is compounded into the sweat monitoring fiber to form a temperature sensor.

[0039] Specifically, there are two preparation schemes for this step. In Scheme 1, if the electrode is a conductive filament, it is compounded and processed into the sweat collection fiber through processes such as knitting, embroidery, and sewing. In Scheme 2, if the electrode is a conductive coating, it is coated on the surface of the sweat collection fiber through processes such as screen printing, electrostatic spraying, and magnetron sputtering. Using the screen printing process, a planar screen printing stencil is designed according to the size and structure of the textile-based temperature sensor. The conductive coating is placed on the planar screen, and printing is carried out with a squeegee. The gap distance of the squeegee is 5 - 50 microns; or electrostatic spraying is used, and the spraying thickness is designed according to the size and structure of the textile-based temperature sensor. The electrostatic field is 5 - 50 kV, and the air flow rate is 10 - 70 m / s; or the magnetron sputtering process is used, and a magnetron sputtering template is designed according to the size and structure of the textile-based temperature sensor. The magnetron sputtering intensity is 5 - 6000 W, the magnetron sputtering time is 1 - 10 minutes, and the vacuum degree is 10 -2 -10 -5 Pa. The textile-based temperature sensor sends the resistance change signal data to the data processing system embedded in the DC power supply, and can monitor the temperature of the sports intelligent headband in real time. The adjustable ranges of the inkjet printing speed (3 - 20 cm / s) and the magnetron sputtering intensity (5 - 6000 W) are wide, which can adapt to the electrode processing with different precision requirements; the liquid silicone bonding process (curing temperature 40 - 80 °C, time 0.5 - 5 hours) can not only ensure the stable connection between the sensor and the collector housing, but also avoid the damage of high temperature to the flexible material. This flexibility enables the product to be widely used in competitive sports training, daily fitness monitoring, and the health management of special populations (such as diabetic patients), meeting personalized needs.

[0040] The adjustable ranges of the inkjet printing speed (3 - 20 cm / s) and the magnetron sputtering intensity (5 - 6000 W) are wide, which can adapt to the electrode processing with different precision requirements; the liquid silicone bonding process (curing temperature 40 - 80 °C, time 0.5 - 5 hours) can not only ensure the stable connection between the sensor and the collector housing, but also avoid the damage of high temperature to the flexible material. This flexibility enables the product to be widely used in competitive sports training, daily fitness monitoring, and the health management of special populations (such as diabetic patients), meeting personalized needs.

[0041] Assembly of the collector and the headband:

[0042] Integrate the sweat sensor, temperature sensor, and inertial sensor into the collector housing. The inertial sensor is used to count the movement distance, step frequency, step speed, number of steps, and calorie consumption. The inertial sensor is fixed on the surface of the collector housing through the liquid silicone bonding process. The collector is combined with the headband matrix through Velcro, and the back of the collector is close to the forehead.

[0043] Specifically, the collector includes a sweat sensor, a temperature sensor, an inertial sensor, a collector housing, and a circuit board. The inertial sensor is used to count the number of steps and calorie consumption. The inertial sensor is bonded to the collector housing using liquid silicone. First, the liquid silicone is scraped and coated on the surface of the collector housing and heated to a semi-solid state at a heating temperature of (40 - 80°C) for a time of (0.5 - 5 h); then the inertial sensor is fixed on the surface of the collector housing and further heated and cured at a heating temperature of (40 - 80°C) for a time of (0.5 - 5 h), and finally a stable bond is formed between the inertial sensor and the collector housing. The collector and the headband are fixed using Velcro. When in use, the front of the collector faces outward, and the back of the collector is close to the forehead.

[0044] Please refer to Figure 1 , the multifunctional textile-based sports sweat monitoring smart headband of the present invention includes two parts, a headband base 1 and a collector 2. The collector contains three sensors, namely a sweat sensor, a temperature sensor, and an inertial sensor. First, the sweat sensor is divided into glucose sensing yarn, pH sensing fiber, Na+ sensing yarn, and K+ sensing yarn. The sensitivity of the glucose sensing yarn is 60 - 120 nA μM-1 (detection range: 0 - 250 μM), the sensitivity of the pH sensing fiber is 30 - 80 mV pH-1 (detection range: 3 - 7), the sensitivity of the Na+ sensing yarn is 20 - 90 mV dec-1 (detection range: 10 - 160×10 -3 mM), and the sensitivity of the K+ sensing yarn is 20 - 90 mV dec-1 (detection range: 2 - 32×10 -3 mM).

[0045] The flexible electrode sensing layer uses materials such as carbon nanotubes, graphene, or conductive filaments to form a highly conductive network through precise coating or composite processes, combined with surface-modified selective recognition materials (such as specific reaction enzymes or ion-selective membranes), which can achieve high-precision real-time monitoring of multiple physiological indicators such as glucose, pH value, Na+, and K+ in sweat without damaging the fabric structure. In addition, the textile-based temperature sensor is directly integrated through conductive paint or conductive filaments, and its temperature coefficient of resistance (TCR) can reach 1×10 -3 -5×10 -3 K-1, which can dynamically track changes in body temperature, work in cooperation with the inertial sensor, and synchronously record data on movement frequency, distance, and calorie consumption to form a multi-dimensional sports health monitoring system.

[0046] In the present invention, an inertial sensor is built in to count the movement distance, movement frequency, movement speed, number of steps, and calorie consumption.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A preparation method of a multifunctional textile-based sports sweat monitoring intelligent headband, characterized in that, It includes the following steps: S1. Preparation of sweat monitoring fiber: Using water-absorbent textile fiber as the sweat collection part, and the water-absorbent textile fiber is selected from one or more of cotton fiber, viscose fiber, acetate fiber, polyester / cotton blended fiber, polyvinyl alcohol fiber or cuprammonium fiber; Coating a conductive material on the surface of the sweat collection part to form a flexible electrode sensing layer; the conductive material includes carbon nanotubes, graphene, metal nanoparticles, conductive filaments or conductive coatings; Modify the electrode surface of the flexible electrode sensing layer with a selective recognition material for detecting glucose, pH value, Na + or K + ; S2. Preparation of textile-based temperature sensor: Using a conductive filament or a conductive coating to compound the conductive material into the sweat monitoring fiber to form a temperature sensor; S3. Assembly of the collector and the headband: Integrating the sweat sensor, the temperature sensor and the inertial sensor into the collector housing, and the inertial sensor is used to count the movement distance, step frequency, step speed, number of steps and calorie consumption; Fixing the inertial sensor on the surface of the collector housing through a liquid silicone bonding process; The collector is combined with the headband base through Velcro, and the back of the collector is close to the forehead.

2. The preparation method of the multifunctional textile-based sports sweat monitoring smart headband according to claim 1, wherein: Coating the conductive material on the surface of the sweat collection part through inkjet printing, screen printing, electrostatic spraying, magnetron sputtering or electrochemical deposition process; Compounding the conductive material into the sweat monitoring fiber through knitting, embroidery, sewing, screen printing, electrostatic spraying or magnetron sputtering process to form a temperature sensor.

3. The preparation method of the multifunctional textile-based sports sweat monitoring smart headband according to claim 2, characterized in that: The temperature coefficient of resistance (TCR) of the conductive material is 1×10 -3 -5×10 -3 K -1 ; The curing temperature for fixing the inertial sensor on the surface of the collector housing through the liquid silicone bonding process is 40-80°C, and the curing time is 0.5-5 hours.

4. The preparation method of the multifunctional textile-based sports sweat monitoring smart headband according to claim 3, wherein: The process parameters of the inkjet printing are: the inkjet speed is 3-20 cm / s, and the droplet volume is 10-50 nL; The process parameters of the screen printing are: the blade gap is 10-50 microns; The process parameters of the magnetron sputtering are as follows: the sputtering intensity is 5 - 6000 W, the sputtering time is 1 - 10 minutes, and the vacuum degree is 10 -2 -10 -5 Pa.

5. The preparation method of the multifunctional textile-based sports sweat monitoring intelligent headband according to claim 4, characterized in that: The selective recognition material includes a specific reaction enzyme for glucose detection; or includes Na + , K + ion selective membranes for Na + , K + detection.

6. The preparation method of the multifunctional textile-based sports sweat monitoring smart headband according to claim 5, wherein: The conductive coating is conductive silver paint or conductive graphene paint, and the conductive filament is silver-plated conductive yarn, carbon nanotube yarn or graphene yarn.

7. The preparation method of the multifunctional textile-based sports sweat monitoring intelligent headband according to claim 6, characterized in that: The inertial sensor is fixed through the following steps: Scraping the liquid silicone onto the surface of the collector housing and heating it to a semi-solid state, the temperature is 40-80°C, and the time is 0.5-5 hours; Placing the inertial sensor on the surface of the semi-solid silicone and continuing to heat and cure until completely bonded.

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