Smart textile with visual sensing and interaction function and application thereof

Abstract

The application provides a kind of smart textile with visual sensing and interactive function and its application, comprising: textile display screen formed by interweaving two different fibers, textile sensor and control chip; textile display screen is connected with textile sensor through control chip, information collected by textile sensor is transmitted to control chip, control chip transmits feedback signal to textile display screen by information processing and analysis, so as to display different graphic pattern information.The smart textile of the application has low manufacturing cost, short process and wide application range.

Description

A smart textile with visual sensing and interactive functions and its applications Technical Field

[0001] This invention relates to the field of wearable smart electronic textile technology, and in particular to a smart textile with visual sensing and interactive functions and its applications. Background Technology

[0002] Visual feedback is considered a promising interaction method due to its intuitiveness, efficiency, and high responsiveness. More importantly, it possesses unique technological advantages when combined with wearable sensors, bringing more scientific, effective, and autonomous data interaction and feedback to various applications such as health monitoring, exercise assessment, rehabilitation training, and telemedicine. For example, a wearable insole pressure visual feedback system, consisting of a pressure data acquisition insole and a visual feedback terminal, has unique advantages in the rehabilitation training of stroke patients. Therefore, wearable sensing systems with visual feedback capabilities have enormous application potential in various fields. Textile displays, as a visualization medium, have also received widespread attention.

[0003] Currently, fiber displays offer significant advantages over fabric-based displays in terms of pixel-based fabric topologies. For fiber-based electroluminescent (EL) textiles, a key challenge is constructing complex multilayer structures within limited fiber shapes while maintaining the flexibility and extensibility of the fiber device. One approach involves using commercially available fibers modified with noble metals (such as Ag) as internal electrodes, coating the coaxial fibers with an EL layer (typically phosphor), and interweaving them with another electrode yarn to form a textile display. A unique advantage of this method is the ability to directly construct EL fibers on commercially available fibers, facilitating mass production and commercialization. The requirement for electrode uniformity and high conductivity leads to the use of noble metals as electrode materials; however, large-area textile displays incur higher fixed costs compared to existing noble metal electrode applications (such as solar cells, organic light-emitting diodes, and supercapacitors). Another direction involves utilizing hydrogels, poly(ionic liquids), or ionic conductors as electrode materials, and constructing EL fibers through a co-extrusion spinning process with a light-emitting layer and a dielectric layer. The resulting fibers possess excellent tensile properties and unique three-dimensional twisting characteristics; however, these emerging electrode materials are not yet mature enough for large-scale preparation and application. Therefore, how to balance cost control and production capacity based on commercial fibers is a crucial issue worthy of attention in the research of electroluminescent fiber preparation. Summary of the Invention

[0004] This invention proposes a method for preparing electroluminescent fibers that balances cost control and mass production capability, and uses these fibers as light-emitting units to create a novel textile display fabric for visual sensing and human-computer interaction applications.

[0005] Specifically, the present invention provides the following technical solution:

[0006] A smart textile with visual sensing and interactive functions includes:

[0007] The system employs a textile display screen, textile sensor, and control chip formed by interweaving two different fibers. The textile display screen and textile sensor are connected through the control chip. The information collected by the textile sensor is transmitted to the control chip, and the control chip processes and analyzes the information, then transmits the feedback signal back to the textile display screen to display different graphic patterns.

[0008] Furthermore, the textile display screen is formed by interlacing electroluminescent fibers and transparent conductive fibers in a warp and weft manner. This interlacing method facilitates the formation of pixels similar to those in an LED screen, which is beneficial for controlling graphic patterns.

[0009] Furthermore, the electroluminescent fibers were prepared using the following method:

[0010] Step S1: Wet spinning of polyacrylonitrile fibers, and adding copper source, vulcanizing agent and reducing agent to the coagulation bath to prepare conductive polyacrylonitrile fibers; In the coagulation process of wet spinning, the present invention directly adds copper source, vulcanizing agent and reducing agent to the coagulation bath, and performs conductive treatment by forming conductive fibers in one step; The added copper source is 5% to 50% of the fiber mass, the vulcanizing agent is 8% to 80% of the fiber mass, and the reducing agent is 0.1% to 8% of the fiber mass. When adding the above substances, the temperature of the coagulation bath is controlled at 70 to 120°C.

[0011] Step S2: Electroluminescent fibers are formed by coating conductive polyacrylonitrile fibers, which serve as internal electrodes, with an electroluminescent particle coating. The proportion of luminescent particles added to the luminescent coating of the conductive polyacrylonitrile fibers is 10% to 40% (wt). The luminescent particles are attached to the surface of the conductive polyacrylonitrile fibers by coating.

[0012] Furthermore, in step S1, the copper source is selected from at least one of copper sulfate, copper chloride, copper nitrate, copper oxide, cuprous sulfate, and cuprous oxide; the sulfiding agent is selected from at least one of sodium thiosulfate, sulfur dioxide, sodium pyrosulfate, and sodium bisulfite; and the reducing agent includes at least one of silver nitrate, sodium hypochlorite, ferrous sulfate, and amino salts.

[0013] Furthermore, the electroluminescent particles in step S2 are selected from at least one of ZnS:Cu, ZnS:Mn, ZnS:Cd, ZnS:Al, and ZnS:Ag.

[0014] Furthermore, the transparent conductive fibers are prepared using the following method:

[0015] Step S1': Mix choline chloride and acrylic acid in a certain proportion, and heat and stir until transparent;

[0016] Step S2': After cooling to room temperature, add TPO (diphenyl(2,4,6-trimethylbenzoyl)phosphorus oxide) and PEGDA (polyethylene glycol diacrylate) as photoinitiator and crosslinking agent, stir in the dark for a period of time, and then let stand to remove bubbles to obtain the precursor liquid;

[0017] Step S3': Place the precursor liquid into a syringe and inject it into a polytetrafluoroethylene tube. After curing with ultraviolet light, remove the liquid to obtain transparent conductive fibers.

[0018] Furthermore, in step S1', the molar ratio of choline chloride to acrylic acid is 1:2, and the mixture is heated at 80-100°C; in step S2', the stirring time is 2-3 hours; and in step S3', the curing time is 1-5 minutes.

[0019] Furthermore, textile sensors are flexible sensors based on textiles, including tensile (strain) sensors, pressure sensors, and temperature and humidity sensors. These sensors can be selected from existing corresponding sensors.

[0020] Furthermore, the control chip includes a textile display driver module, a sensor module, an ADC module, an MCU module, and a push-button switch module; the sensor module is used to connect to the textile sensor input signal; the textile display driver module is used for output; the ADC module and the MCU module are used for signal conversion and control, respectively; and the push-button switch module is used for opening and closing the circuit.

[0021] Furthermore, the smart textiles of the present invention are used in wearable textiles.

[0022] The beneficial effects of the technical solution provided by this invention include at least the following:

[0023] This invention discloses a smart textile for visualization and interaction, integrating intuitive, efficient, and highly responsive visual feedback with wearable sensing, demonstrating unique technological advantages. It will bring more scientific, effective, and autonomous data interaction and feedback to various applications such as health monitoring, exercise assessment, rehabilitation training, and telemedicine. The textile display screen included in this invention relates to a method for preparing electroluminescent fibers that balances cost control and mass production capabilities. Compared to existing electroluminescent fibers using silver-plated fibers as core electrodes, this method reduces the use of precious metals and avoids the problems of high toxicity and waste liquid / gas pollution associated with the use of strong reducing agents such as formaldehyde in the silver-plated fiber preparation process. This not only makes the process environmentally friendly but also significantly reduces production costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 is a circuit diagram of the textile display screen, textile sensor and control chip of the present invention;

[0026] Figure 2 is a schematic diagram of the smart textiles of the present invention used in smart clothing. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] Polyacrylonitrile fibers were obtained by wet spinning. During the coagulation process of the polyacrylonitrile fibers, copper sulfate, sodium thiosulfate, and silver nitrate were directly added to the coagulation bath. Conductive treatment was carried out by one-time forming of conductive fibers to obtain conductive polyacrylonitrile fibers. The added copper source was 30% of the fiber mass, the vulcanizing agent was 40% of the fiber mass, and the reducing agent was 0.2% of the fiber mass. When adding the above substances, the coagulation bath temperature was controlled at 90℃.

[0030] ZnS:Cu was coated on the surface of conductive polyacrylonitrile fibers, and the amount of electroluminescent particles added was 10% of the mass of the conductive polyacrylonitrile fibers, to obtain electroluminescent fibers.

[0031] Choline chloride and acrylic acid were mixed in a molar ratio of 1:2 and heated and stirred at 80°C until transparent. After cooling to room temperature, TPO and PEGDA were added and stirred in the dark for 2 hours. Then, the mixture was allowed to stand to remove air bubbles and obtain a precursor liquid. The precursor liquid was placed in a syringe and injected into a polytetrafluoroethylene tube. After curing with a UV lamp for 1 minute, the liquid was removed to obtain transparent conductive fibers.

[0032] The obtained electroluminescent fibers and transparent conductive fibers are woven together in a warp and weft manner to form a textile display screen. After being further connected with textile sensors and control chips in a certain circuit relationship, a smart textile that can be used in wearable textiles is obtained for visual sensing, motion monitoring, rehabilitation exercises, and human-computer interaction.

[0033] Example 2

[0034] Polyacrylonitrile fibers were obtained by wet spinning. During the coagulation process of the polyacrylonitrile fibers, copper chloride, sodium bisulfite, and ferrous sulfate were directly added to the coagulation bath. Conductive treatment was carried out by one-time forming of conductive fibers to obtain conductive polyacrylonitrile fibers. The added copper source was 20% of the fiber mass, the vulcanizing agent was 30% of the fiber mass, and the reducing agent was 1% of the fiber mass. When adding the above substances, the coagulation bath temperature was controlled at 80℃.

[0035] ZnS:Cu was coated on the surface of conductive polyacrylonitrile fibers, and the amount of electroluminescent particles added was 20% of the mass of the conductive polyacrylonitrile fibers, to obtain electroluminescent fibers.

[0036] Choline chloride and acrylic acid were mixed in a molar ratio of 1:2 and heated and stirred at 80°C until transparent. After cooling to room temperature, TPO and PEGDA were added and stirred in the dark for 2 hours. Then, the mixture was allowed to stand to remove air bubbles and obtain a precursor liquid. The precursor liquid was placed in a syringe and injected into a polytetrafluoroethylene tube. After curing with a UV lamp for 1 minute, the liquid was removed to obtain transparent conductive fibers.

[0037] The obtained electroluminescent fibers and transparent conductive fibers are woven together in a warp and weft manner to form a textile display screen. After being further connected with textile sensors and control chips in a certain circuit relationship, a smart textile that can be used in wearable textiles is obtained for visual sensing, motion monitoring, rehabilitation exercises, and human-computer interaction.

[0038] Example 3

[0039] Polyacrylonitrile fibers were obtained by wet spinning. During the coagulation process of the polyacrylonitrile fibers, copper sulfate, sodium bisulfite, and silver nitrate were directly added to the coagulation bath. Conductive treatment was carried out by one-time forming of conductive fibers to obtain conductive polyacrylonitrile fibers. The added copper source was 10% of the fiber mass, the vulcanizing agent was 20% of the fiber mass, and the reducing agent was 1% of the fiber mass. When adding the above substances, the coagulation bath temperature was controlled at 100℃.

[0040] ZnS:Cu was coated on the surface of conductive polyacrylonitrile fibers, and the amount of electroluminescent particles added was 30% of the mass of the conductive polyacrylonitrile fibers, to obtain electroluminescent fibers.

[0041] Choline chloride and acrylic acid were mixed in a molar ratio of 1:2 and heated and stirred at 80°C until transparent. After cooling to room temperature, TPO and PEGDA were added and stirred in the dark for 2 hours. Then, the mixture was allowed to stand to remove air bubbles and obtain a precursor liquid. The precursor liquid was placed in a syringe and injected into a polytetrafluoroethylene tube. After curing with a UV lamp for 1 minute, the liquid was removed to obtain transparent conductive fibers.

[0042] The obtained electroluminescent fibers and transparent conductive fibers are woven together in a warp and weft manner to form a textile display screen. After being further connected with textile sensors and control chips in a certain circuit relationship, a smart textile that can be used in wearable textiles is obtained for visual sensing, motion monitoring, rehabilitation exercises, and human-computer interaction.

[0043] Example 4

[0044] Polyacrylonitrile fibers were obtained by wet spinning. During the coagulation process of the polyacrylonitrile fibers, copper sulfate, sodium pyrosulfate, and sodium hypochlorite were directly added to the coagulation bath. Conductive treatment was carried out by one-time forming of conductive fibers to obtain conductive polyacrylonitrile fibers. The added copper source was 10% of the fiber mass, the vulcanizing agent was 20% of the fiber mass, and the reducing agent was 1% of the fiber mass. When adding the above substances, the coagulation bath temperature was controlled at 100℃.

[0045] ZnS:Mn was coated on the surface of conductive polyacrylonitrile fibers, and the amount of electroluminescent particles added was 10% of the mass of the conductive polyacrylonitrile fibers to obtain electroluminescent fibers.

[0046] Choline chloride and acrylic acid were mixed in a molar ratio of 1:2 and heated and stirred at 80°C until transparent. After cooling to room temperature, TPO and PEGDA were added and stirred in the dark for 2 hours. Then, the mixture was allowed to stand to remove air bubbles and obtain a precursor liquid. The precursor liquid was placed in a syringe and injected into a polytetrafluoroethylene tube. After curing with a UV lamp for 1 minute, the liquid was removed to obtain transparent conductive fibers.

[0047] The obtained electroluminescent fibers and transparent conductive fibers are woven together in a warp and weft manner to form a textile display screen. After being further connected with textile sensors and control chips in a certain circuit relationship, a smart textile that can be used in wearable textiles is obtained for visual sensing, motion monitoring, rehabilitation exercises, and human-computer interaction.

[0048] Example 5

[0049] Polyacrylonitrile fibers were obtained by wet spinning. During the coagulation process of the polyacrylonitrile fibers, copper sulfate, sodium pyrosulfate, and sodium hypochlorite were directly added to the coagulation bath. Conductive treatment was carried out by one-time forming of conductive fibers to obtain conductive polyacrylonitrile fibers. The added copper source was 20% of the fiber mass, the vulcanizing agent was 30% of the fiber mass, and the reducing agent was 1% of the fiber mass. When adding the above substances, the coagulation bath temperature was controlled at 100℃.

[0050] ZnS:Mn was coated on the surface of conductive polyacrylonitrile fibers, and the amount of electroluminescent particles added was 20% of the mass of the conductive polyacrylonitrile fibers, to obtain electroluminescent fibers.

[0051] Choline chloride and acrylic acid were mixed in a molar ratio of 1:2 and heated and stirred at 80°C until transparent. After cooling to room temperature, TPO and PEGDA were added and stirred in the dark for 2 hours. Then, the mixture was allowed to stand to remove air bubbles and obtain a precursor liquid. The precursor liquid was placed in a syringe and injected into a polytetrafluoroethylene tube. After curing with a UV lamp for 1 minute, the liquid was removed to obtain transparent conductive fibers.

[0052] The obtained electroluminescent fibers and transparent conductive fibers are woven together in a warp and weft manner to form a textile display screen. After being further connected with textile sensors and control chips in a certain circuit relationship, a smart textile that can be used in wearable textiles is obtained for visual sensing, motion monitoring, rehabilitation exercises, and human-computer interaction.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A smart textile with visual sensing and interactive functions, characterized in that, include: Textile displays, textile sensors, and control chips are formed by interlacing electroluminescent fibers and transparent conductive fibers in a warp and weft manner. The textile display screen and textile sensor are connected via a control chip. Information collected by the textile sensor is transmitted to the control chip, which processes and analyzes the information, then transmits feedback signals to the textile display screen to display different graphic patterns. The electroluminescent fiber is prepared using the following method: Step S1, wet spinning of polyacrylonitrile fiber, and adding a copper source, vulcanizing agent, and reducing agent to a coagulation bath to prepare conductive polyacrylonitrile fiber; Step S2, coating the conductive polyacrylonitrile fiber as an internal electrode with an electroluminescent particle coating to form the electroluminescent fiber; In Step S1, the copper source is selected from at least one of copper sulfate, copper chloride, copper nitrate, copper oxide, cuprous sulfate, and cuprous oxide; the vulcanizing agent is selected from at least one of sodium thiosulfate, sulfur dioxide, sodium pyrosulfate, and sodium bisulfite. The reducing agent includes at least one of silver nitrate, sodium hypochlorite, ferrous sulfate, and amino salts; the transparent conductive fiber is prepared by the following method: Step S1': choline chloride and acrylic acid are mixed in a certain proportion and heated and stirred until transparent; Step S2': after cooling to room temperature, TPO and PEGDA are added as photoinitiators and crosslinking agents, stirred for a period of time in the dark, and then allowed to stand to remove bubbles to obtain a precursor liquid; Step S3': the precursor liquid is placed in a syringe and injected into a polytetrafluoroethylene tube, cured under ultraviolet light, and the liquid is removed to obtain transparent conductive fiber; in Step S1', the molar ratio of choline chloride to acrylic acid is 1:2, and it is heated at 80~100℃; in Step S2', the stirring time is 2~3h; in Step S3', the curing time is 1~5min.

2. The smart textile according to claim 1, characterized in that, In step S1, the copper source added is 5% to 50% of the mass of polyacrylonitrile fiber, the vulcanizing agent is 8% to 80% of the mass of polyacrylonitrile fiber, the reducing agent is 0.1% to 8% of the mass of polyacrylonitrile fiber, and the coagulation bath temperature is 70 to 120°C.

3. The smart textile according to claim 1, characterized in that, In step S2, the amount of electroluminescent particles added is 10% to 40% of the conductive polyacrylonitrile fiber.

4. The smart textile according to claim 1, characterized in that, The electroluminescent particles in step S2 are selected from at least one of ZnS:Cu, ZnS:Mn, ZnS:Cd, ZnS:Al, and ZnS:Ag.

5. The smart textile according to claim 1, characterized in that, Textile sensors are flexible sensors based on textiles, selected from at least one of tensile sensors, strain sensors, pressure sensors, and temperature and humidity sensors.

6. The smart textile according to claim 1, characterized in that, The control chip includes a textile display driver module, a sensor module, an ADC module, an MCU module, and a push-button switch module; the sensor module is used to connect to the textile sensor input signal; the textile display driver module is used for output; the ADC module and MCU module are used for signal conversion and control, respectively; and the push-button switch module is used for opening and closing the circuit.

7. The application of the smart textile according to any one of claims 1-6 in wearable textiles.

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