A fully fiber-based pressure monitoring system

Abstract

The present invention provides an all-fiber-based pressure monitoring system, relating to the field of pressure monitoring. The all-fiber-based pressure monitoring system comprises: an upper electrode layer, an intermediate sensing microstructure layer, a lower electrode layer, and at least one pressure sensor; the upper electrode layer comprises first conductive stripes and first non-conductive stripes spaced apart; the lower electrode layer comprises second conductive stripes and second non-conductive stripes spaced apart; the mirror image of the first conductive stripes on the lower electrode layer intersects the second conductive stripes at a set angle; the intermediate sensing microstructure layer is located between the upper and lower electrode layers; the intermediate sensing microstructure layer is a conductive fabric; the pressure sensor is located between the upper and lower electrode layers; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripes, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripes. The present invention can achieve pressure monitoring while maintaining comfort.

Description

Technical Field

[0001] The present invention relates to the field of pressure monitoring, and in particular to a full-fiber-based pressure monitoring system. Background Art

[0002] With the development and progress of society, wearable technology, along with the advancement of artificial intelligence, has rapidly become a research hotspot. Wearable technology aims to integrate electronic devices with sensing capabilities into clothing or accessories, giving them the combined functions of multiple technologies such as multimedia, sensors, and wireless communications, enabling the rapid capture, analysis, and feedback of human physiological signals.

[0003] Currently, traditional rigid sensors suffer from rigidity, poor washability, poor air and moisture permeability, poor fit, and poor integration with the human body. These limitations make them unable to meet the comfort, thermal, and even visual requirements of wearable devices. Flexible sensors, due to their flexibility and excellent compatibility with the human body, have attracted widespread attention in applications such as motion detection, healthcare, bionic prostheses, and human-machine interfaces. Therefore, the development of flexible sensors holds immense research value. Flexible pressure sensors are generally categorized into four types: piezoresistance, piezoelectric, and triboelectric. Pressure sensors made from polymer composites have the advantages of lightweight, flexible design, high sensitivity, and high resolution, making them a research hotspot in recent years. However, these sensors are often thin-film or gel-like in form, which significantly impacts the flexibility, air and moisture permeability, heat dissipation, and thermal insulation properties of wearable devices.

[0004] Textiles, as essential components of human wear, are a crucial vehicle for the development of wearable technology, with smart textiles being a crucial component of wearable devices. Sensors are at the core of smart textiles, enabling them to sense and detect pressure, strain, temperature, humidity, displacement, and speed. Currently, textile-based flexible sensors include pressure, displacement, speed, temperature, humidity, and gas sensors. Pressure sensors, among others, can be used to sense human motion signals and are key components for collecting human body data. Summary of the Invention

[0005] The object of the present invention is to provide a fully fiber-based pressure monitoring system that achieves pressure monitoring while maintaining comfort.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A fully fiber-based pressure monitoring system, comprising: an upper electrode layer, a middle sensing microstructure layer, a lower electrode layer, and at least one pressure sensor;

[0008] The upper electrode layer includes first conductive stripes and first non-conductive stripes distributed at intervals; the first conductive stripes are conductive fabrics; the first non-conductive stripes are non-conductive fabrics;

[0009] The lower electrode layer includes second conductive stripes and second non-conductive stripes spaced apart; the second conductive stripes are conductive fabrics; the second non-conductive stripes are non-conductive fabrics; the mirror image of the first conductive stripes on the lower electrode layer intersects with the second conductive stripes at a set angle;

[0010] The intermediate sensing microstructure layer is located between the upper electrode layer and the lower electrode layer; the intermediate sensing microstructure layer is a conductive fabric;

[0011] The pressure sensor is located between the upper electrode layer and the lower electrode layer; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripe, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripe.

[0012] Optionally, the set angle is 90°.

[0013] Optionally, the conductive fabric is made of conductive filaments.

[0014] Optionally, the non-conductive fabric is made of non-conductive material; the non-conductive material is one or more blended yarns of cotton, wool, silk, linen, aerogel, polyester, nylon, polypropylene, spandex, vinylon, chloroprene, aramid and glass fiber, or a non-conductive fabric with functional properties such as antibacterial, far infrared, deodorizing, negative ion, and cooling.

[0015] Optionally, the all-fiber-based pressure monitoring system further comprises: a first packaging layer located on the upper surface of the upper electrode layer and a second packaging layer located on the lower surface of the lower electrode layer;

[0016] The first encapsulation layer and the second encapsulation layer are both fabrics.

[0017] Optionally, the all-fiber-based pressure monitoring system further comprises: a data acquisition device;

[0018] The data acquisition device is connected to the first conductive stripes and the second conductive stripes respectively; the data acquisition device is used to acquire and output the pressure data obtained by the pressure sensor.

[0019] Optionally, the all-fiber-based pressure monitoring system further comprises: a first wire interface, a second wire interface, a first wire bundle bar, a second wire bundle bar, a first wire bundle strip, and a second wire bundle strip;

[0020] Each of the first conductive stripes is provided with a first wire interface; the first wire bundling strip is provided on the upper electrode layer; the first wire interface is connected to one end of the first wire bundling strip via the first wire bundling strip; the other end of the first wire bundling strip is connected to the data acquisition device;

[0021] A second wire interface is provided on each second conductive stripe; the second wire bundling strip is provided on the lower electrode layer; the second wire interface is connected to one end of the second wire bundling strip via the second wire bundling strip; the other end of the second wire bundling strip is connected to the data acquisition device.

[0022] Optionally, the data acquisition device includes: a first acquisition port, a second acquisition port, a data acquisition box and an output port;

[0023] The first acquisition port is connected to the first wire bundling bar; the second acquisition port is connected to the second wire bundling bar; the first acquisition port, the second acquisition port and the output port are all arranged on the data acquisition box.

[0024] Optionally, the width of the first conductive stripe and the width of the second conductive stripe are both in the range of 1 mm to 50 mm.

[0025] Optionally, the width of the first non-conductive stripes and the second non-conductive stripes are both in the range of 1 mm to 100 mm.

[0026] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0027] The present invention provides an all-fiber-based pressure monitoring system, which includes an upper electrode layer, an intermediate sensing microstructure layer, a lower electrode layer and at least one pressure sensor; the upper electrode layer includes a first conductive stripe and a first non-conductive stripe distributed at intervals; the lower electrode layer includes a second conductive stripe and a second non-conductive stripe distributed at intervals; the mirror image of the first conductive stripe on the lower electrode layer intersects with the second conductive stripe at a set angle; the intermediate sensing microstructure layer is located between the upper electrode layer and the lower electrode layer; the pressure sensor is located between the upper electrode layer and the lower electrode layer; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripe, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripe, so that the pressure sensor forms a sensing array on the all-fiber-based pressure monitoring system, thereby being able to comprehensively realize pressure identification and monitoring. In addition, the first conductive stripe and the second conductive stripe are both conductive fabrics; the first non-conductive stripe and the second non-conductive stripe are both non-conductive fabrics, which can ensure good conductivity while also ensuring comfort. By combining the pressure sensor, the conductive fabric and the non-conductive fabric, pressure monitoring and wearing comfort can be achieved simultaneously. Therefore, the present invention can achieve pressure monitoring while maintaining comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A structural diagram of a full-fiber-based pressure monitoring system provided by an embodiment of the present invention;

[0030] Figure 2 A diagram illustrating the arrangement of a pressure sensor according to an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of a first sensor array provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of a second sensor array provided by an embodiment of the present invention.

[0033] Explanation of symbols:

[0034] Upper electrode layer-1, middle sensing microstructure layer-2, lower electrode layer-3, pressure sensor-4, first conductive stripe-5, first non-conductive stripe-6, second conductive stripe-7, second non-conductive stripe-8, first packaging layer-9, second packaging layer-10, first wire interface-11, second wire interface-12, first wire bundling strip-13, second wire bundling strip-14, first wire bundling strip-15, second wire bundling strip-16, first acquisition port-17, second acquisition port-18, data acquisition box-19, output port-20, power port-21. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The object of the present invention is to provide a fully fiber-based pressure monitoring system, which comprises an upper electrode layer, an intermediate sensing microstructure layer, a lower electrode layer and at least one pressure sensor; the upper electrode layer comprises a first conductive stripe and a first non-conductive stripe distributed at intervals; the lower electrode layer comprises a second conductive stripe and a second non-conductive stripe distributed at intervals; the mirror image of the first conductive stripe on the lower electrode layer intersects with the second conductive stripe at a set angle; the intermediate sensing microstructure layer is located between the upper electrode layer and the lower electrode layer; the pressure sensor is located between the upper electrode layer and the lower electrode layer; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripe, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripe, so that the pressure sensor forms a sensing matrix on the fully fiber-based pressure monitoring system, thereby being able to comprehensively realize pressure identification and monitoring. In addition, the first conductive stripe and the second conductive stripe are both conductive fabrics; the first non-conductive stripe and the second non-conductive stripe are both non-conductive fabrics, which can ensure good conductivity while also ensuring comfort. By combining the pressure sensor, the conductive fabric and the non-conductive fabric, pressure monitoring and wearing comfort can be achieved simultaneously. Therefore, the present invention can achieve pressure monitoring while maintaining comfort.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a full-fiber-based pressure monitoring system, which includes: an upper electrode layer 1, a middle sensing microstructure layer 2, a lower electrode layer 3 and at least one pressure sensor 4.

[0039] The upper electrode layer 1 includes first conductive stripes 5 and first non-conductive stripes 6 that are distributed at intervals. The first conductive stripes 5 are conductive fabrics; and the first non-conductive stripes 6 are non-conductive fabrics.

[0040] The lower electrode layer 3 includes second conductive stripes 7 and second non-conductive stripes 8 distributed at intervals; the second conductive stripes 7 are conductive fabrics; the second non-conductive stripes 8 are non-conductive fabrics; the mirror image of the first conductive stripes 5 on the lower electrode layer 3 intersects with the second conductive stripes 7 at a set angle.

[0041] The pressure sensor 4 is located between the upper electrode layer 1 and the lower electrode layer 3 ; the mirror image of the pressure sensor 4 in the upper electrode layer 1 is located on the first conductive stripe 5 , and the mirror image of the pressure sensor 4 in the lower electrode layer 3 is located on the second conductive stripe 7 .

[0042] The upper electrode layer 1 and the lower electrode layer 3 are made of the same material, and the conductive stripes of the two, namely the first conductive stripes 5 of the upper electrode layer 1 and the second conductive stripes 7 of the lower electrode layer 3, are arranged at a set angle in space. For example, the set angle is 90°. Figure 2 As shown, the first conductive stripes 5 and the second conductive stripes 7 are vertically staggered at 90 degrees in space, and a pressure sensor 4 is set at each staggered point. Then, the multiple pressure sensors 4 can form a sensor array, thereby realizing pressure recognition and monitoring functions.

[0043] The area of ​​the pressure sensor 4 can be controlled by the number of parallel-connected first conductive stripes 5 and the number of parallel-connected second conductive stripes 7, which can directly affect the imaging resolution of the full-fiber-based pressure monitoring system.

[0044] The upper electrode layer 1 contains 1 to 200 first conductive stripes 5, and the lower electrode layer 3 contains 1 to 200 second conductive stripes 7, which together with the middle sensing microstructure layer 2 ultimately form 1 to 40,000 pressure sensors 4. The pressure sensor 4 is a flexible pressure sensor with a sensitivity of 0.1 to 2 kPa. -1 , pressure test range is 1Pa~100MPa, response time <100ms, durability>10000 times, air permeability 200mm / s~500mm / s, moisture permeability 1~6×10 3 g / (m 2 24h), washable.

[0045] The middle sensing microstructure layer 2 is located between the upper electrode layer 1 and the lower electrode layer 3; the middle sensing microstructure layer 2 is a conductive fabric. Specifically, the middle sensing microstructure layer 2 is a conductive fabric with a microstructure.

[0046] The first conductive stripes 5 and the second conductive stripes 7 are conductive fabrics made of conductive filaments. In other words, the conductive fabrics are made of conductive filaments. The conductive fabrics are knitted fabrics, woven fabrics or non-woven fabrics.

[0047] The conductive fabric is made of non-coated conductive filaments and has good wear resistance and washability. The upper electrode layer 1 and the lower electrode layer 3 are highly conductive fabrics with a surface resistance of 0.1Ω to 10Ω. They are composed of one or more of silver-plated fibers, copper-plated fibers, stainless steel fibers, and nickel-plated fibers. The middle sensing microstructure layer 2 is a non-coated conductive fabric with a microstructure and a surface resistance of 1.0×10 4 Ω~1.0×10 6 Ω, composed of one or more of carbon black fiber, graphene fiber, graphite fiber, carbon nanotube fiber, and the microstructure mainly includes knitted, woven, non-woven and braided microstructures.

[0048] The non-conductive fabric is made of non-conductive materials; the non-conductive material is one or more blended yarns of cotton, wool, silk, linen, aerogel, polyester, nylon, polypropylene, spandex, vinylon, chloroprene, aramid and glass fiber, or a non-conductive fabric with functional properties such as antibacterial, far infrared, deodorizing, negative ion, and cooling.

[0049] The intermediate sensing microstructure layer 2 can be a conductive fabric made from conductive filaments, or a conductive fabric made using a conventional padding-drying-baking process. The intermediate sensing microstructure layer 2 is made by weaving, knitting, braiding, or non-woven processes. The surface density of the intermediate sensing microstructure layer 2 is approximately 200 g / m 2 , the resistance is about 136.7kΩ / cm.

[0050] The width of the first conductive stripe 5 and the width of the second conductive stripe 7 are both in the range of 1 mm to 50 mm. Therefore, the width of the first conductive stripe 5 and the width of the second conductive stripe 7 can be selected to be 6 mm.

[0051] The spacing between the first conductive stripes 5 and the second conductive stripes 7 also falls within a set range. This spacing can be greater than or less than a second set value; the second set value can be 4 mm. Therefore, the distance between the first conductive stripes 5 and the distance between the second conductive stripes 7 can be 4 mm. In other words, the widths of the first non-conductive stripes 6 and the second non-conductive stripes 8 are both 4 mm. In short, the widths of the first non-conductive stripes 6 and the second non-conductive stripes 8 range from 1 mm to 100 mm. Any value within this range is acceptable.

[0052] In addition, the resistance of the first conductive stripes 5 and the resistance of the second conductive stripes 7 are both approximately 3.4Ω / cm. The above values ​​are the main factors that can affect the sensing imaging resolution and the area of ​​a single pressure sensor 4.

[0053] As an optional embodiment, the all-fiber-based pressure monitoring system further includes: a first encapsulation layer 9 located on the upper surface of the upper electrode layer 1, and a second encapsulation layer 10 located on the lower surface of the lower electrode layer 3; both the first encapsulation layer 9 and the second encapsulation layer 10 are fabrics. In short, both the first encapsulation layer 9 and the second encapsulation layer 10 are all washable, breathable, and moisture-permeable all-fiber-based fabrics.

[0054] The first and second encapsulation layers 9 and 10 are used to protect the upper electrode layer 1, the middle sensing microstructure layer 2, and the lower electrode layer 3. The first and second encapsulation layers 9 and 10 can be selected or replaced with various materials, areas, or patterns based on specific needs and application scenarios to achieve personalized design.

[0055] The all-fiber-based pressure monitoring system also includes a data acquisition device connected to the first conductive stripes 5 and the second conductive stripes 7, respectively. The data acquisition device is used to collect and output pressure data obtained by the pressure sensor 4. Furthermore, it can be driven by a low voltage of 1 to 5V.

[0056] Specifically, the all-fiber-based pressure monitoring system further includes: a first wire interface 11 , a second wire interface 12 , a first wire bundling bar 13 , a second wire bundling bar 14 , a first wire bundling strip 15 and a second wire bundling strip 16 .

[0057] A first wire interface 11 is provided on each first conductive stripe 5; a first wire bundling strip 15 is provided on the upper electrode layer 1; the first wire interface 11 is connected to one end of the first wire bundling strip 13 via the first wire bundling strip 15; the other end of the first wire bundling strip 13 is connected to the data acquisition device.

[0058] A second wire interface 12 is provided on each second conductive strip 7; a second wire bundling strip 16 is provided on the lower electrode layer 3; the second wire interface 12 is connected to one end of the second wire bundling strip 14 via the second wire bundling strip 16; the other end of the second wire bundling strip 14 is connected to the data acquisition device.

[0059] like Figure 3 As shown, the first wire interface 11 can also be provided on the first non-conductive stripe 6, with the first wire bundle bar 13 connecting the two first conductive stripes 5 to the first wire interface 11. Similarly, the second wire interface 12 can also be provided on the second non-conductive stripe 8, with the second wire bundle bar 14 connecting the two second conductive stripes 7 to the second wire interface 12. The mirror image of the pressure sensor 4 on the upper electrode layer 1 is located on the first conductive stripe 5, and the mirror image on the lower electrode layer 3 is located on the second conductive stripe 7. The sensor array in this case corresponds to a sensor array consisting of two first conductive stripes 5 and two second conductive stripes 7. In short, the sensor array formed by one first wire interface 11 and one second wire interface 12 in this all-fiber-based pressure monitoring system is a 2x2 array.

[0060] like Figure 4 As shown, the first wire interface 11 is provided on the first conductive stripe 5, and the three first conductive stripes 5 are connected to the first wire interface 11 via the first wire bundling bar 13. Similarly, the second wire interface 12 is provided on the second conductive stripe 7, and the three second conductive stripes 7 are connected to the second wire interface 12 via the second wire bundling bar 14. Thus, the sensing array formed by one first wire interface 11 and one second wire interface 12 on the all-fiber-based pressure monitoring system is a 3*3 array.

[0061] The data acquisition device includes: a first acquisition port 17, a second acquisition port 18, a data acquisition box 19 and an output port 20; the first acquisition port 17 is connected to the first wire bundling bar 13; the second acquisition port 18 is connected to the second wire bundling bar 14; the first acquisition port 17, the second acquisition port 18 and the output port 20 are all set on the data acquisition box 19.

[0062] The data acquisition box 19 is also provided with a power port 21. The power port 21 can be a USB port to be plugged into an external USB power supply port for power supply.

[0063] The operation of the all-fiber-based pressure monitoring system in actual application is as follows:

[0064] When the all-fiber-based pressure monitoring system is subjected to external pressure, the contact resistance of the internal structure of the intermediate sensing microstructure layer 2, detected by the first conductive stripes 5 of the upper electrode layer 1 and the second conductive stripes 7 of the lower electrode layer 3, changes. This means that as pressure acts, the contact resistance between the layers changes, increasing the number of contact points between the fiber structure and the tissue structure within the conductive fabric, and decreasing the resistance. The electrical signals representing the resistance changes in the conductive circuit between the first conductive stripes 5 of the upper electrode layer 1 and the intermediate sensing microstructure layer 2 are collected via the first wire bundle strip 13 connected to the first wire bundle strip 15 via the first wire interface 11 and sent to the first acquisition port 17 of the data acquisition device.

[0065] The electrical signal of the resistance change of the conductive circuit between each second conductive stripe 7 of the lower electrode layer 3 and the intermediate sensing microstructure layer 2 is collected through the second wire bundle strip 14 connected to the second wire bundle strip 16 to the second collection port 18 of the data acquisition device through the second wire interface 12.

[0066] The electrical signals collected by the first acquisition port 17 and the second acquisition port 18 form an array signal in the data acquisition box 19. The array signal is transmitted to the external pressure monitoring software through the output port 20, and the applied pressure is then inferred through the resistance change, and a pressure image is displayed on the monitor to realize the pressure recognition and monitoring functions.

[0067] The fabrication method for the all-fiber-based pressure monitoring system includes three main steps: Step 1: Fabrication of the upper electrode layer 1 and the lower electrode layer 3; Step 2: Fabrication of the intermediate sensing microstructure layer 2; and Step 3: Assembly of the all-fiber-based pressure monitoring system.

[0068] Specifically, regarding the preparation of the upper electrode layer 1 and the lower electrode layer 3:

[0069] The first conductive stripes 5 and the second conductive stripes 7 are both made of conductive filaments. Based on the requirements and application scenario, the required material (e.g., copper wire, silver-plated conductive yarn, carbon nanotube yarn, graphene yarn, etc.), width (e.g., 4mm, 6mm, 8mm, 10mm, etc.), and spacing (e.g., 3mm, 4mm, 5mm, 6mm, etc.) are determined. The material of the first non-conductive stripes 6 and the second non-conductive stripes 8 is determined (e.g., cotton, wool, silk, linen, polyester, nylon, polypropylene, spandex, vinylon, chloroprene, aramid, glass fiber, etc.). The upper electrode layer 1 and the lower electrode layer 3 are produced using knitting, weaving, or non-woven processes.

[0070] Regarding the preparation of the intermediate sensing microstructure layer 2:

[0071] The middle sensing microstructure layer 2 includes not only conductive filaments but also fabric, ie base fabric.

[0072] Option 1: The intermediate sensing microstructure layer 2 is a conductive fabric made from conductive filaments. The intermediate sensing microstructure layer 2 is made from a selection of materials (e.g., copper wire, silver-plated conductive yarn, carbon nanotube yarn, graphene yarn, etc.) and is fabricated through weaving, knitting, braiding, or non-woven processes. The surface density of the intermediate sensing microstructure layer 2 is approximately 200 g / m 2 , the resistance is about 136.7kΩ / cm.

[0073] Option 2: The intermediate sensing microstructure layer 2 is a conductive fabric made by the traditional dipping-padding-drying-baking process. Determine the raw material of the base fabric (such as cotton, wool, silk, linen, polyester, nylon, polypropylene, spandex, vinylon, chloroprene, aramid, glass fiber, etc.), and prepare the required base fabric by knitting, weaving or non-woven technology. First, soak the base fabric in a conductive finishing agent (carbon black finishing liquid, Mxene finishing liquid or graphene finishing liquid, etc.) with a bath ratio of 1:30 for 30 minutes; secondly, use a one-dip and one-padding process for pulping, with a rolling rate of 80%; then, rinse the sample with deionized water to remove the residual solution; finally, bake at 120°C for 5 minutes and dry at room temperature to obtain the intermediate sensing microstructure layer 2. The surface density of the intermediate sensing microstructure layer 2 is about 200g / m 2 , the resistance is about 136.7kΩ / cm.

[0074] About the all-fiber-based pressure monitoring system assembly:

[0075] It includes the connection between the upper electrode layer 1, the lower electrode layer 3 and the data acquisition device; the composite assembly of each layer; and the connection of the power supply, pressure monitoring software and display during actual use.

[0076] First, the conductive filaments are integrated into small bundles at the tail end of the first conductive stripe 5 of the upper electrode layer 1, and the conductive filaments are integrated into small bundles at the tail end of the second conductive stripe 7 of the lower electrode layer 3, and then the first wire interface 11 set on the corresponding first conductive stripe 5 and the second wire interface 12 set on the second conductive stripe 7 are obtained.

[0077] Each first wire interface 11 is sequentially connected to the first wire bundling strip 13 in the first wire bundling strip 15 ; each second wire interface 12 is sequentially connected to the wires in the second wire bundling strip 16 .

[0078] First wire bundling strips 13 in first wire bundling strip 15 are connected to first data acquisition port 17 in the same direction. Second wire bundling strips 14 in second wire bundling strip 16 are connected to second data acquisition port 18 in the same direction. Both first data acquisition port 17 and second data acquisition port 18 are located on and connected to data acquisition box 19, thereby forming an array signal at data acquisition box 19.

[0079] During the assembly process, attention should be paid to the consistency of the sequence of the conductive stripes and the acquisition ports to ensure that the final array signal is consistent with the array formed by each layer of the all-fiber-based pressure monitoring system.

[0080] Next, from bottom to top, arrange the second packaging layer 10, lower electrode layer 3, middle sensing microstructure layer 2, upper electrode layer 1, and first packaging layer 9 in this order. Note that the middle sensing microstructure layer 2 has a 1 cm excess length and width compared to the lower electrode layer 3, upper electrode layer 1, and first packaging layer 9, and the second packaging layer 10 has a 2 to 4 cm excess length and width compared to the middle sensing microstructure layer 2. Fold the edges of the second packaging layer 10 upward to wrap around the edges of the lower electrode layer 3, middle sensing microstructure layer 2, upper electrode layer 1, and first packaging layer 9 above it, and sew the layers together at the edges. During this process, be careful not to allow the sewing thread to pass through the second conductive stripes 7 of the lower electrode layer 3 and the first conductive stripes 5 of the upper electrode layer 1. When sewing and securing the fabric layers, leave a small opening for the first and second conductor bundling strips 15 and 16 to pass through. Finally, secure the fabric to the all-fiber-based pressure monitoring system.

[0081] Finally, the power interface such as USB power port 21 can be plugged into a USB power supply port for power supply. The output port 20 such as a data output USB port can be plugged into a device equipped with pressure monitoring software and a display for data output, data processing and data display.

[0082] The sensing performance of the all-fiber-based pressure monitoring system provided by the embodiments of the present invention has the following four advantages:

[0083] 1. It has a low minimum detection limit, and a 2g weight can make its resistance change rate exceed 3%.

[0084] 2. It still maintains high sensitivity (about 0.41kPa) in the low pressure range (0-3kPa) -1 ), and has excellent linearity and better low-voltage identification and monitoring functions.

[0085] 3. The response time is less than 50ms, which is sufficient for monitoring various human motion signals.

[0086] 4. Experiments show that the resistance change remains stable after 8,000 pressure cycles, demonstrating excellent durability. This is mainly due to the excellent and stable conductivity of the middle layer of conductive fabric and the upper and lower striped conductive fabrics.

[0087] The wearable and comfortable performance of the all-fiber-based pressure monitoring system provided by the embodiments of the present invention has the following three advantages:

[0088] 1. Better air permeability, the air permeability is about 270.49mm / s.

[0089] 2. Good moisture permeability, the moisture permeability is 3.42×103g / (m 2 ·24h).

[0090] 3. Tests show that after 30 washes, the electronic fabric's resistance only increases by approximately 18%, yet it remains sensitive to applied pressure and maintains excellent sensing performance. Therefore, it meets the requirements for contact comfort, thermal and moisture comfort, and cleanability required in daily life. This is primarily due to its all-textile composition.

[0091] The all-fiber-based pressure monitoring system provided by this embodiment of the invention can be driven by a low voltage (1V to 5V) and conveniently powered by the USB port of a laptop, power bank, charger, or other device. Furthermore, the all-fiber-based pressure monitoring system of the present invention has a simple preparation process, enabling large-scale mass production.

[0092] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0093] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A fully fiber-based pressure monitoring system, characterized in that: The all-fiber-based pressure monitoring system includes: an upper electrode layer, a middle sensing microstructure layer, a lower electrode layer, a data acquisition device, and at least one pressure sensor; The upper electrode layer includes first conductive stripes and first non-conductive stripes distributed at intervals; the first conductive stripes are conductive fabrics; the first non-conductive stripes are non-conductive fabrics; The lower electrode layer includes second conductive stripes and second non-conductive stripes spaced apart; the second conductive stripes are conductive fabrics; the second non-conductive stripes are non-conductive fabrics; the mirror image of the first conductive stripes on the lower electrode layer intersects with the second conductive stripes at a set angle; The intermediate sensing microstructure layer is located between the upper electrode layer and the lower electrode layer; the intermediate sensing microstructure layer is a conductive fabric; wherein the base fabric is immersed in a conductive finishing agent at a bath ratio of 1:30 for 30 minutes; secondly, pulping is performed using a one-dip and one-pad process with a pulping rate of 80%; then, the sample is rinsed with deionized water to remove residual solution; finally, baked at 120°C for 5 minutes and dried at room temperature to obtain the intermediate sensing microstructure layer; the surface density of the intermediate sensing microstructure layer is about 200g / m 2 The surface resistance of the fabric in the middle sensing microstructure layer is 1.0×10 4 Ω~1.0×10 6 Ω; The pressure sensor is located between the upper electrode layer and the lower electrode layer; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripe, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripe; The data acquisition device is connected to the first conductive stripes and the second conductive stripes respectively; the data acquisition device is used to collect and output the pressure data obtained by the pressure sensor; The data acquisition device includes: a first acquisition port, a second acquisition port, a data acquisition box and an output port; The first acquisition port is connected to a first wire bundle bar; the second acquisition port is connected to a second wire bundle bar; the first acquisition port, the second acquisition port, and the output port are all provided on the data acquisition box; the electrical signals collected by the first acquisition port and the second acquisition port form an array signal within the data acquisition box, and the array signal is transmitted to an external pressure monitoring software through the output port, thereby inferring the applied pressure through the resistance change, and displaying a pressure image on the display; The non-conductive fabric is made of non-conductive material; the non-conductive material is one or more blended yarns of cotton, wool, silk, linen, aerogel, polyester, nylon, polypropylene, spandex, vinylon, chloroprene, aramid and glass fiber, or non-conductive fabric with functional properties such as antibacterial, far infrared, deodorizing, negative ion, and cooling properties; The area of ​​the pressure sensor is controlled by the number of parallel-connected first conductive stripes and the number of parallel-connected second conductive stripes; The pressure sensor is a flexible pressure sensor with a sensitivity of 0.1~2kPa -1 , pressure test range is 1Pa~100MPa, response time <100ms, durability>10000 times, air permeability 200mm / s~500mm / s, moisture permeability 1~6×10 3 g / (m 2 24h), washable; The resistance of the fabric surface of the upper electrode layer and the lower electrode layer is 0.1Ω~10Ω, and the middle sensing microstructure layer is a non-coated conductive fabric with a microstructure, and the fabric surface resistance is 1.0×10 4 Ω~1.0×10 6 Ω; The width of the first conductive stripe and the width of the second conductive stripe are both in the range of 1 mm to 50 mm; The width of the first non-conductive stripes and the second non-conductive stripes are both in the range of 1 mm to 100 mm; The setting angle is 90°; The first conductive stripes and the second conductive stripes are vertically staggered at 90 degrees in space, and a pressure sensor is set at each staggered point; multiple pressure sensors can form a sensor array; The 2g weight makes the resistance change rate of the all-fiber-based pressure monitoring system exceed 3%.

2. The all-fiber-based pressure monitoring system according to claim 1, characterized in that: The conductive fabric is made of conductive filaments.

3. The all-fiber-based pressure monitoring system according to claim 1, characterized in that: The all-fiber-based pressure monitoring system further comprises: a first packaging layer located on the upper surface of the upper electrode layer and a second packaging layer located on the lower surface of the lower electrode layer; The first encapsulation layer and the second encapsulation layer are both fabrics.

4. The all-fiber-based pressure monitoring system according to claim 1, characterized in that: The all-fiber-based pressure monitoring system further includes: a first wire interface, a second wire interface, a first wire bundle bar, a second wire bundle bar, a first wire bundle strip and a second wire bundle strip; Each of the first conductive stripes is provided with a first wire interface; the first wire bundling strip is provided on the upper electrode layer; the first wire interface is connected to one end of the first wire bundling strip via the first wire bundling strip; the other end of the first wire bundling strip is connected to the data acquisition device; A second wire interface is provided on each second conductive stripe; the second wire bundling strip is provided on the lower electrode layer; the second wire interface is connected to one end of the second wire bundling strip via the second wire bundling strip; the other end of the second wire bundling strip is connected to the data acquisition device.

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