Preparation method of pressing interactive light-changing optical fiber fabric

Abstract

The invention relates to a preparation method of a pressing interactive light-changing optical fiber fabric, which is characterized in that a fabric main body adopts surface-inner layer-changing double-layer texture, optical fibers are used as surface weft yarns, conductive yarns are used as surface warp yarns, the conductive yarns and the optical fibers are arranged at intervals to form inner weft yarns, and polyester yarns are used as inner warp yarns; the proportion of each conductive yarn with the same weaving length in the weft yarns of the inner layer is controlled to be gradually reduced, and the integrally-formed flexible optical fiber fabric integrated with the conductive material is woven; then optical fiber branch bundling and laser engraving are carried out to obtain a bundled optical fiber fabric with patterns; and finally, the bundled optical fiber fabric is connected with a photoelectric signal conversion circuit module to obtain the pressing interactive light-changing optical fiber fabric. The polymer optical fibers are woven into the surface wefts and the inner wefts of the double-layer fabric, the conductive yarns are woven into the surface warps and the inner wefts of the double-layer fabric, and integrated weaving of conductive and luminescent materials is realized through yarn configuration and organization structure design; and the arrangement density of the conductive yarns in the inner weft is in a gradient change rule, so that the interactivity and functionality of the optical fiber fabric are enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent interactive textiles and relates to a method for preparing a press-interactive light-changing optical fiber fabric. Background Art

[0002] Since the 21st century, with the continuous development of new textile materials and electronic information technology, the development focus of the world's textile industry has shifted from the traditional garment industry to high-tech textiles, and has developed in the direction of multi-function and high added value. Smart interactive textiles are a popular technology developed in recent years. This technology adds conductive and other functional fibers or sensors to textiles to give traditional textiles more active interactive functions. Currently, it is widely used in smart homes, smart cockpits, smart wearables, medical health and other fields. People's demand for luminous interaction of related textiles is also becoming more and more important. Its function is no longer limited to lighting and decoration, but is expected to become a key window for human-computer interaction.

[0003] Conductive materials, as carriers of electronic circuits, play an important role in the development of smart textiles. Conductive materials often appear in smart textiles in the form of fibers, yarns, coatings or fabrics to meet different performance requirements and application scenarios. At present, smart textiles developed based on conductive materials basically have excellent conductive sensing performance, which is mainly manifested in high sensitivity and wide sensing range, but there are still difficulties in stabilizing the output of linear sensing electrical signals, and the current interactive functions of such textiles mostly rely on external electronic components for expression, lacking integrated and visualized interactive feedback.

[0004] Polymer optical fiber (POF) is used to construct luminous clothing and various household textiles due to its excellent properties of light weight, flexibility and easy processing. However, most of the existing optical fiber fabric products on the market have a single luminous mode and low functionality. At the same time, there is also the problem of unclear luminous effect in bright environments.

[0005] For example, in the literature (Novel Fabrication Method for Pressure-Sensing PolymericOptical Fiber(POF)Fabric with Non-Direct-Contact ConductiveSystem.Appl.Sci.2024,14,2284.https: / / doi.org / 10.3390 / app14062284), the conductive yarn in the weft of the double-layer fabric is evenly arranged, and the gradient change of the electrical signal cannot be achieved. At the same time, the fabric circuit structure is realized by additional conductive fabric patches, which is not conducive to the integrated weaving of the fabric.

[0006] Therefore, it is of great significance to study a method for preparing a press-interactive light-changing optical fiber fabric to solve the problems existing in the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the prior art and provide a method for preparing a press-interactive light-changing optical fiber fabric.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0010] (1) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the outer and inner layers, with optical fiber as the outer weft yarn (outer weft), conductive yarn as the outer warp yarn (outer warp), the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn (inner weft), and polyester yarn is used as the inner warp yarn (inner warp), and the proportion of the conductive yarn in each same weaving length in the inner weft yarn is controlled to gradually decrease, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials;

[0011] (2) Bundling the optical fiber sections not woven into the weft direction of the optical fiber fabric obtained in step (1), and sorting out the two ends of the conductive yarn in the inner weft yarn not woven into the weft direction;

[0012] (3) Laser engraving a complex pattern on the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0013] (4) The two ends of the conductive yarn not woven into the weft direction of the patterned bundled optical fiber fabric are used as input resistance signal modules and connected to the photoelectric signal conversion circuit module. The output of the photoelectric signal conversion circuit module is an RGB-LED light source. The RGB-LED light source is connected to the optical fibers bundled at both ends of the optical fiber fabric in the weft direction through a connector. When the power is turned on, a press-to-interactive light-changing optical fiber fabric is obtained.

[0014] The present invention adopts the method of weaving polymer optical fiber into the surface weft and inner weft of a double-layer fabric, and weaving conductive yarn into the surface warp and inner weft, so as to realize the integrated weaving of optical fiber fabric with integrated conductive materials. The method of weaving polymer optical fiber into the surface weft and inner weft of a double-layer fabric is to construct the main body of the luminous fabric, ensure the luminous effect and structural stability of the fabric surface, and because the polymer optical fiber cannot withstand the huge tension in the warp weaving process, it is generally woven into the fabric as a weft yarn. At the same time, the method of weaving conductive yarn into the surface warp and inner weft of a double-layer fabric is to form a fabric circuit, the conductive yarn woven into the inner weft constitutes a fixed value resistor, and the conductive yarn woven into the surface warp constitutes a short-circuit switch, so as to realize the effect of pressing the fabric surface after power is turned on, and the surface warp contacts the conductive yarn in the inner weft, changing the resistance of the fabric. In addition, weaving conductive yarn into the surface warp and inner weft can effectively prevent the conductive yarn from being exposed too much to the fabric surface, thereby ensuring the appearance effect of the luminous fabric, and preventing the unstable pressing signal caused by hand sweat and dirt contacting the fabric.

[0015] The conductive yarns in the inner weft of the prior art double-layer fabric are evenly arranged in order to achieve that when the fabric is pressed, the short-circuited resistance value is basically the same, or in a certain range. The photoelectric signal conversion circuit module only needs to identify the electrical signal that changes in this interval and give a specific optical signal feedback. However, the present invention is different from the prior art. The density of the conductive yarns in the inner weft changes in a gradient. The effect achieved is that the resistance value formed by it also changes in a gradient in the same weaving length. This makes it possible to press and touch the warp of the fabric surface with a finger after power is turned on. The conductive yarns in the surface warp will contact the conductive yarns with a gradient arrangement density in the inner weft, short-circuiting the resistance of this part of the conductive yarn in the inner weft. The resistance value of this part that is short-circuited also changes in a gradient. This gradient-changing electrical signal will be identified and processed in the photoelectric signal conversion circuit module, and finally expressed as different luminous color changes of the fabric. The gradient-changing electrical signal enables different luminous color interaction effects when pressing and touching different positions on the warp of the fabric surface, giving the optical fiber fabric richer interactivity and is expected to achieve more functionality. The methods used in the prior art to achieve similar effects usually include constructing resistive, capacitive, and piezoelectric sensors in the fabric, thereby obtaining the effect of generating a gradient-changing electrical signal in response to external pressure. However, the sensor structure of this implementation method is complex, and it is difficult to achieve the integrated weaving formation of the flexible optical fiber fabric with integrated conductive materials in the present invention, and the integrated and visualized interactive feedback in the present invention is also lacking.

[0016] As the preferred technical solution:

[0017] In the method for preparing the pressed interactive light-changing optical fiber fabric as described above, in step (1), both the surface layer and the inner layer of the fabric are made of plain weave.

[0018] A method for preparing a press-interactive light-changing optical fiber fabric as described above, wherein the polyester yarn and the conductive yarn are arranged in an alternating manner before weaving and warping, drawing-in and reeding are performed in a ratio of 1:1;

[0019] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0020] The polyester yarn has a linear density of 20 to 60S / 2 and is white in color; the conductive yarn is a gray silver-plated nylon fiber sewing thread with a linear density of 200 to 300D, and the resistance of the conductive yarn is 2 to 4Ω / cm.

[0021] In the method for preparing a pressed interactive light-changing optical fiber fabric as described above, the optical fiber in step (1) is a polymer optical fiber with a diameter of 0.25 to 0.5 mm, the core layer of the optical fiber is PMMA, and the skin layer is fluororesin.

[0022] In the method for preparing a pressed interactive light-changing optical fiber fabric as described above, in step (1), the same weaving length is 7.5-12.5 mm, and the ratio of the spacing between the conductive yarn and the optical fiber in the inner weft yarn gradually changes from 1:1 to 1:2, 1:3, 1:4...1:10.

[0023] In the method for preparing a pressed interactive light-changing optical fiber fabric as described above, in step (2), the optical fiber in the weft direction of the optical fiber fabric is woven in individually, and 10 to 15 cm of optical fiber is reserved at each end and not woven in; the conductive yarn in the inner weft yarn is woven in continuously, and 10 to 15 cm of conductive yarn is reserved at each end and not woven in.

[0024] In the method for preparing the pressed interactive light-changing optical fiber fabric as described above, the partial optical fiber bundling in step (2) refers to using a heat shrink tube with a diameter of 3 to 7 mm to partially wrap the optical fiber, and using a hot air gun to heat shrink and shape it, and then cutting the optical fiber bundle to make the end flat.

[0025] In the method for preparing a press-interactive light-changing optical fiber fabric as described above, the laser engraving in step (3) uses a CO2 laser with a laser wavelength of 9.3 μm, a laser power of 15 to 35 W, an engraving speed of 2000 mm / s, and a filling density of 0.2 mm.

[0026] In the method for preparing a press-to-interactive light-changing optical fiber fabric as described above, the photoelectric signal conversion circuit module in step (4) refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer. In the single-chip microcomputer, the voltage signal is converted into a standard digital signal. The light-emitting control circuit determines the standard digital signal and outputs a corresponding pulse width modulated pulse signal to the light-emitting module to control the RGB-LED light-emitting signal.

[0027] In the method for preparing the press-interactive light-changing optical fiber fabric as described above, the RGB-LED light source in step (4) is a lamp bead that can convert light of different wavelengths;

[0028] The power supply is a detachable rechargeable power supply with a capacity of 2000 to 10000 mA.

[0029] Beneficial effects:

[0030] (1) A method for preparing a press-to-interactive light-changing optical fiber fabric of the present invention comprises weaving polymer optical fibers into the surface warp and the inner weft of a double-layer fabric to form a luminous fabric body, and weaving conductive yarns into the surface warp and the inner weft of the double-layer fabric to form a fabric circuit. The integrated weaving of conductive and luminescent materials is achieved through yarn configuration and organizational structure design;

[0031] (2) A method for preparing a press-activated interactive light-changing optical fiber fabric of the present invention, wherein the arrangement density of the conductive yarn in the inner weft changes in a gradient pattern, and after power is turned on, fingers are used to press different positions on the surface of the fabric, so that the conductive yarn in the outer warp contacts the conductive yarn of different arrangement density in the inner weft, and the resistance of this part of the conductive yarn in the inner weft is short-circuited. The change in the electrical signal is processed by a photoelectric signal conversion circuit module, and is finally expressed as a change in the luminous color of the fabric. The design of pressing the surface of the fabric to stimulate the change in the luminous color of the fabric enhances the interactivity and functionality of the optical fiber fabric;

[0032] (3) The present invention relates to a method for preparing a press-to-interactive light-changing optical fiber fabric. The laser engraving process destroys the core-skin structure of the polymer optical fiber, that is, by destroying the total reflection of light in the optical fiber, the light is scattered well from the side of the optical fiber, thereby improving the side-luminescence effect of the optical fiber. The present invention performs high-speed laser marking on the surface of the optical fiber fabric, so that the fabric has a complex pattern luminescence effect that is still very obvious in bright environments, thereby improving the aesthetics of the optical fiber fabric. This interactive luminous textile is expected to be applied and developed in the fields of smart homes, smart cockpits, smart wearables, and medical health. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1This is a loom diagram of a double-layer fabric in a preparation method of a pressed interactive light-changing optical fiber fabric proposed in the present invention; Figure (a) is before layer change, and Figure (b) is after layer change, wherein 1 and 2 represent surface layer tissues, and I and II represent inner layer tissues; the upper left corner figures of Figures (a) and (b) are drawing-in diagrams, the arrangement of × represents the use of 8 heald frames and the straight drawing method, the middle left figure is the reed drawing diagram, the arrangement of black grids represents the insertion of 2 yarns into each reed, the lower left figure is the tissue diagram, the black grids represent the warp tissue points of the surface layer of the fabric, the × grids represent the warp tissue points of the inner layer of the fabric, the ○ grids represent the unique warp tissue points formed by lifting all the surface warps when weaving the inner weft, and the lower right figure is the loom diagram input to the loom.

[0034] Figure 2 The schematic diagram of the cross-sectional structure of a double-layer fabric in the method for manufacturing a press-interactive light-changing optical fiber fabric proposed in the present invention.

[0035] Figure 3 This is a schematic diagram of the design of a fabric interaction system in a method for making a press-interactive light-changing optical fiber fabric proposed in the present invention.

[0036] Figure 4 This is a schematic diagram of the light-emitting process controlled by a photoelectric signal conversion circuit module in a method for making a press-interactive light-changing optical fiber fabric proposed in the present invention.

[0037] Figure 5 This is a graph showing the change in resistance value of the conductive part of the interactive light-changing optical fiber fabric when pressed in Example 1.

[0038] Figure 6 This is a graph showing the luminous performance test results of the press-activated interactive light-changing optical fiber fabric in Example 1.

[0039] Among them, 1-conductive yarn I, 2-optical fiber I, 3-polyester yarn, 4-conductive yarn II, 5-optical fiber II, 6-laser engraving, 7-conductive yarn reserved for weft direction, 8-photoelectric signal conversion circuit module, 9-RGB-LED light source, 10-power supply, 11-optical fiber segment bundling, 12-press interactive light-changing optical fiber fabric. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0041] The test methods involved in the performance indicators of the present invention are as follows:

[0042] The pressure sensing performance index refers to the stability and repeatability of the change in the resistance value of the conductive part of the fabric when the fabric surface is pressed, as well as the gradient of the change in the resistance value of the conductive part of the fabric when different positions on the fabric surface are pressed and touched, that is, the specific resistance value needs to be measured. The VC890D multimeter (Shenzhen Yisheng Shengli Technology Co., Ltd., Shenzhen, China) is adjusted to the resistance value measurement gear (using 20kΩ) range, and the red and black electrodes are connected to the ends of the inner conductive yarn of the double-layer fabric respectively, and the resistance value (initial value) of the conductive part of the fabric measured at this time is recorded; press a certain position on the fabric surface with a finger, record the measured resistance value (pressing value), and after the finger leaves the fabric, record the measured resistance value (recovery value), and repeat the operation 1000 times; fix the horizontal position, press different positions on the fabric surface at the same distance in the warp direction, and repeat the above operation at each position; plot the measured resistance value change results of the conductive part of the fabric into a chart to obtain the test results of the fabric pressure sensing performance.

[0043] Luminescence performance index: Luminescence performance refers to the surface luminescence brightness value after the optical fiber fabric is coupled with the light source, especially the comparison between the luminescence brightness value of the complex pattern area after laser engraving and other areas. TES-137 luminance meter (TES Electronics Industrial Co., Ltd., Taiwan, China) can be used to measure the brightness value of the surface of luminous fabric. Place the fabric flat in a dark room and connect it to the light source. The luminance meter light detector can capture the luminescence brightness value of the fabric side in real time. The multi-point sampling method is used in the process to ensure the feasibility of the final result. In the test, the complex pattern area (laser engraving) and other areas (non-engraving) of the fabric are sampled at multiple points (20 random positions) in turn, and the brightness value box lines of each area are drawn to obtain the test results of the fabric luminescence performance.

[0044] Example 1

[0045] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0046] (1) Raw materials preparation:

[0047] Optical fiber: polymer optical fiber with a diameter of 0.25 mm (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), the core layer of the optical fiber is PMMA, and the skin layer is fluororesin;

[0048] Polyester yarn: linear density is 40S / 2, color is white;

[0049] Conductive yarn: gray silver-plated nylon fiber sewing thread with a linear density of 260D, the resistance of the conductive yarn is 3Ω / cm;

[0050] Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1;

[0051] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0052] (2) Figures 1-2 As shown, the main body of the fabric adopts a double-layer structure with a surface and an inner layer alternating between the surface and the inner layer, and the surface and the inner layer of the fabric adopt a plain weave structure; optical fiber I 2 is used as the surface weft yarn, conductive yarn I1 is used as the surface warp yarn, conductive yarn II 4 and optical fiber II 5 are arranged alternately to form the inner weft yarn, polyester yarn 3 is used as the inner warp yarn, and the proportion of conductive yarn in the inner weft yarn is controlled to gradually decrease for every 10 mm of the same weaving length, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials;

[0053] (3) In step (2), the optical fiber fabric is woven in a single fiber in the weft direction, and 10 cm of optical fiber is reserved at both ends of each fiber. The optical fiber is partially wrapped with a 5 mm diameter heat shrink tube, and heat-shrinked and shaped with a hot air gun. The optical fiber bundle is then cut to make the end flat, thus completing the fiber bundle;

[0054] (4) The conductive yarn in the inner weft yarn of step (2) is woven in continuously, and 10 cm of conductive yarn is reserved at both ends. The two ends of the conductive yarn in the inner weft yarn that are not woven in are arranged;

[0055] (5) using a CO2 laser to laser engrave the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0056] Among them, the laser wavelength is 9.3μm, the laser power is 30W, the engraving speed is 2000mm / s, and the filling density is 0.2mm;

[0057] (6) Figure 3 As shown, the two ends of the conductive yarn 7 reserved for weft direction in the bundled optical fiber fabric with pattern are connected to the photoelectric signal conversion circuit module 8 as input resistance signal modules, and the output of the photoelectric signal conversion circuit module 8 is the RGB-LED light source 9. The RGB-LED light source 9 is connected to the optical fibers bundled at the two ends of the optical fiber fabric in the weft direction (i.e., the optical fiber partial bundle 11) through a connector, and the power supply 10 is turned on to obtain the press-interactive light-changing optical fiber fabric 12;

[0058] Among them, the RGB-LED light source is a lamp bead that can change different wavelengths of color light, and the applicable current is 450-2000mA; the power supply is a 10000mA detachable rechargeable power supply;

[0059] like Figure 4As shown, the photoelectric signal conversion circuit module refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer STM32. In the single-chip microcomputer STM32, the voltage signal is converted into a standard digital signal. The light-emitting control circuit determines the standard digital signal and outputs a corresponding pulse width modulation PWM pulse signal to the light-emitting module WS2812B to control the RGB-LED light-emitting signal, thereby changing the light-emitting color of the fabric. Through the above-mentioned fabric interactive system design, the present invention can obtain a press-interactive light-changing optical fiber fabric that is both functional and aesthetic.

[0060] The measured resistance change of the conductive part of the fabric is plotted as Figure 5 In the figure, the horizontal axis represents the number of presses, and the vertical axis represents the rate of change of resistance value. It can be seen from the figure that when pressing this position on the surface of the fabric with a finger, the rate of change of resistance value of the conductive part of the fabric is basically stable at about 20%, and the same position is pressed repeatedly. This electrical signal change is repeatable. The test results of the fabric pressure sensing performance can provide a basis for the subsequent design of the photoelectric signal conversion circuit module in the embodiment of the present invention.

[0061] According to the luminous performance test method, the complex pattern area (laser engraving) and other areas (non-engraving) of the fabric are sampled at multiple points (20 random positions) in turn, and the brightness value box lines of each area are drawn as follows: Figure 6 As shown in the figure, the average luminous values ​​of the complex pattern area and other areas are 62.06cd / m 2 and 21.21cd / m 2 The luminous value of the complex pattern area is significantly higher than that of other areas. The test results of the luminous performance of the fabric show that the embodiment of the present invention has a complex pattern luminous effect that is still very obvious in a bright environment.

[0062] Example 2

[0063] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0064] (1) Raw materials preparation:

[0065] Optical fiber: polymer optical fiber with a diameter of 0.3 mm (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), the core layer of the optical fiber is PMMA, and the skin layer is fluororesin;

[0066] Polyester yarn: linear density is 20S / 2, color is white;

[0067] Conductive yarn: gray silver-plated nylon fiber sewing thread with a linear density of 200D, the resistance of the conductive yarn is 2Ω / cm;

[0068] Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1;

[0069] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0070] (2) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the optical fiber and the conductive yarn, and the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and the polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is gradually reduced for every 7.5 mm of the same weaving length, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials; wherein the surface layer and the inner layer of the fabric are both plain weaves;

[0071] (3) In step (2), the optical fiber in the weft direction of the optical fiber fabric is woven in individually, and 11 cm of optical fiber is reserved at both ends of each fiber. The optical fibers are partially wrapped with heat shrink tubing with a diameter of 3 mm, and heat-shrinked and shaped with a hot air gun. The optical fiber bundle is then cut to make the end flat, thus completing the optical fiber bundle.

[0072] (4) The conductive yarn in the inner weft yarn of step (2) is woven in continuously, and 11 cm of conductive yarn is reserved at both ends. The two ends of the conductive yarn in the inner weft yarn that are not woven in are arranged;

[0073] (5) using a CO2 laser to laser engrave the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0074] Among them, the laser wavelength is 9.3μm, the laser power is 15W, the engraving speed is 2000mm / s, and the filling density is 0.2mm;

[0075] (6) connecting the two ends of the conductive yarn reserved for weft direction in the bundled optical fiber fabric with pattern as input resistance signal module to the photoelectric signal conversion circuit module, the output of the photoelectric signal conversion circuit module is RGB-LED light source, the RGB-LED light source is connected to the optical fiber bundled at both ends of the optical fiber fabric in weft direction through a connector, and the power is turned on to obtain the press-to-interactive light-changing optical fiber fabric;

[0076] The RGB-LED light source is a lamp bead that can change different wavelengths of light; the power supply is a 2000mA detachable rechargeable power supply;

[0077] The photoelectric signal conversion circuit module refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer STM32. In the single-chip microcomputer STM32, the voltage signal is converted into a standard digital signal. The light-emitting control circuit judges the standard digital signal and outputs the corresponding pulse width modulation PWM pulse signal to the light-emitting module WS2812B to control the RGB-LED light-emitting signal.

[0078] Example 3

[0079] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0080] (1) Raw materials preparation:

[0081] Optical fiber: polymer optical fiber with a diameter of 0.35 mm (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), the core layer of the optical fiber is PMMA, and the skin layer is fluororesin;

[0082] Polyester yarn: linear density is 30S / 2, color is white;

[0083] Conductive yarn: gray silver-plated nylon fiber sewing thread with a linear density of 220D, the resistance of the conductive yarn is 2.5Ω / cm;

[0084] Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1;

[0085] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0086] (2) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the optical fiber and the conductive yarn, and the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and the polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is gradually reduced for every 9 mm of the same weaving length, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials; wherein the surface layer and the inner layer of the fabric both adopt plain weave;

[0087] (3) In step (2), the optical fiber fabric is woven in a single fiber in the weft direction, and 12 cm of optical fiber is reserved at both ends of each fiber. The optical fiber is partially wrapped with a heat shrink tube with a diameter of 4 mm, and heat-shrinked and shaped with a hot air gun. The optical fiber bundle is then cut to make the end flat, thus completing the fiber bundle.

[0088] (4) The conductive yarn in the inner weft yarn of step (2) is woven in continuously, and 12 cm of conductive yarn is reserved at both ends. The two ends of the conductive yarn in the inner weft yarn that are not woven in are arranged;

[0089] (5) using a CO2 laser to laser engrave the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0090] Among them, the laser wavelength is 9.3μm, the laser power is 20W, the engraving speed is 2000mm / s, and the filling density is 0.2mm;

[0091] (6) connecting the two ends of the conductive yarn reserved for weft direction in the bundled optical fiber fabric with pattern as input resistance signal module to the photoelectric signal conversion circuit module, the output of the photoelectric signal conversion circuit module is RGB-LED light source, the RGB-LED light source is connected to the optical fiber bundled at both ends of the optical fiber fabric in weft direction through a connector, and the power is turned on to obtain the press-to-interactive light-changing optical fiber fabric;

[0092] The RGB-LED light source is a lamp bead that can change different wavelengths of light; the power supply is a 4000mA detachable rechargeable power supply;

[0093] The photoelectric signal conversion circuit module refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer STM32. In the single-chip microcomputer STM32, the voltage signal is converted into a standard digital signal. The light-emitting control circuit judges the standard digital signal and outputs the corresponding pulse width modulation PWM pulse signal to the light-emitting module WS2812B to control the RGB-LED light-emitting signal.

[0094] Example 4

[0095] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0096] (1) Raw materials preparation:

[0097] Optical fiber: polymer optical fiber with a diameter of 0.4 mm (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), the core layer of the optical fiber is PMMA, and the skin layer is fluororesin;

[0098] Polyester yarn: linear density is 50S / 2, color is white;

[0099] Conductive yarn: gray silver-plated nylon fiber sewing thread with a linear density of 240D, the resistance of the conductive yarn is 3.5Ω / cm;

[0100] Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1;

[0101] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0102] (2) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the optical fiber and the conductive yarn, and the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and the polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is gradually reduced for every 11 mm of the same weaving length, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials; wherein the surface layer and the inner layer of the fabric both adopt plain weave structure;

[0103] (3) In step (2), the optical fiber fabric is woven in a single fiber in the weft direction, and 13 cm of optical fiber is reserved at both ends of each fiber. The optical fiber is partially wrapped with a heat shrink tube with a diameter of 6 mm, and heat-shrinked and shaped with a hot air gun. The optical fiber bundle is then cut to make the end flat, thus completing the fiber bundle.

[0104] (4) The conductive yarn in the inner weft yarn of step (2) is woven in continuously, and 14 cm of conductive yarn is reserved at both ends. The two ends of the conductive yarn in the inner weft yarn that are not woven in are arranged;

[0105] (5) using a CO2 laser to laser engrave the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0106] Among them, the laser wavelength is 9.3μm, the laser power is 25W, the engraving speed is 2000mm / s, and the filling density is 0.2mm;

[0107] (6) connecting the two ends of the conductive yarn reserved for weft direction in the bundled optical fiber fabric with pattern as input resistance signal module to the photoelectric signal conversion circuit module, the output of the photoelectric signal conversion circuit module is RGB-LED light source, the RGB-LED light source is connected to the optical fiber bundled at both ends of the optical fiber fabric in weft direction through a connector, and the power is turned on to obtain the press-to-interactive light-changing optical fiber fabric;

[0108] The RGB-LED light source is a lamp bead that can change different wavelengths of light; the power supply is a 6000mA detachable rechargeable power supply;

[0109] The photoelectric signal conversion circuit module refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer STM32. In the single-chip microcomputer STM32, the voltage signal is converted into a standard digital signal. The light-emitting control circuit judges the standard digital signal and outputs the corresponding pulse width modulation PWM pulse signal to the light-emitting module WS2812B to control the RGB-LED light-emitting signal.

[0110] Example 5

[0111] A method for preparing a press-interactive light-changing optical fiber fabric comprises the following steps:

[0112] (1) Raw materials preparation:

[0113] Optical fiber: polymer optical fiber with a diameter of 0.5 mm (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), the core layer of the optical fiber is PMMA, and the skin layer is fluororesin;

[0114] Polyester yarn: linear density is 60S / 2, color is white;

[0115] Conductive yarn: gray silver-plated nylon fiber sewing thread with a linear density of 280D, the resistance of the conductive yarn is 4Ω / cm;

[0116] Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1;

[0117] Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn;

[0118] (2) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the optical fiber and the conductive yarn, and the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and the polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is gradually reduced for every 12.5 mm of the same weaving length, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials; wherein the surface layer and the inner layer of the fabric are both plain weaves;

[0119] (3) In step (2), the optical fiber in the weft direction of the optical fiber fabric is woven in individually, and 15 cm of optical fiber is reserved at both ends of each fiber. The optical fiber is partially wrapped with a heat shrink tube with a diameter of 7 mm, and heat-shrinked and shaped with a hot air gun. The optical fiber bundle is then cut to make the end flat, thus completing the optical fiber partial bundling;

[0120] (4) The conductive yarn in the inner weft yarn of step (2) is woven in continuously, and 15 cm of conductive yarn is reserved at both ends. The two ends of the conductive yarn in the inner weft yarn that are not woven in are arranged;

[0121] (5) using a CO2 laser to laser engrave the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern;

[0122] Among them, the laser wavelength is 9.3μm, the laser power is 35W, the engraving speed is 2000mm / s, and the filling density is 0.2mm;

[0123] (6) connecting the two ends of the conductive yarn reserved for weft direction in the bundled optical fiber fabric with pattern as input resistance signal module to the photoelectric signal conversion circuit module, the output of the photoelectric signal conversion circuit module is RGB-LED light source, the RGB-LED light source is connected to the optical fiber bundled at both ends of the optical fiber fabric in weft direction through a connector, and the power is turned on to obtain the press-to-interactive light-changing optical fiber fabric;

[0124] The RGB-LED light source is a lamp bead that can change different wavelengths of light; the power supply is a detachable rechargeable power supply of 8000mA;

[0125] The photoelectric signal conversion circuit module refers to a circuit module that converts a resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer STM32. In the single-chip microcomputer STM32, the voltage signal is converted into a standard digital signal. The light-emitting control circuit judges the standard digital signal and outputs the corresponding pulse width modulation PWM pulse signal to the light-emitting module WS2812B to control the RGB-LED light-emitting signal.

Claims

1. A method for preparing a pressed interactive light-changing optical fiber fabric, characterized in that The steps include: (1) The main body of the fabric adopts a double-layer structure with an inner and outer layer alternating between the optical fiber and the conductive yarn, and the conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and the polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in each same weaving length in the inner weft yarn is controlled to gradually decrease, so as to weave an integrated flexible optical fiber fabric with integrated conductive materials; (2) bundling the optical fiber portions not woven into the weft ends of the optical fiber fabric obtained in step (1), and sorting out the two ends of the conductive yarn in the inner weft yarn that are not woven into the fabric; (3) performing laser engraving on the surface of the optical fiber fabric to obtain a bundled optical fiber fabric with a pattern; (4) The two ends of the conductive yarn not woven into the weft direction of the patterned bundled optical fiber fabric are used as input resistance signal modules and connected to the photoelectric signal conversion circuit module. The output of the photoelectric signal conversion circuit module is an RGB-LED light source. The RGB-LED light source is connected to the optical fibers bundled at both ends of the optical fiber fabric in the weft direction through a connector. When the power is turned on, a press-to-interactive light-changing optical fiber fabric is obtained.

2. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: Step (1) The surface layer and the inner layer of the fabric are both made of plain weave.

3. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: Step (1) Before weaving, the polyester yarn and the conductive yarn are arranged in an alternate manner and warped, drawn in and reeded in a ratio of 1:1; Drawing in the heald means using 8 heald frames on the loom and adopting the straight drawing method, with the polyester yarn and the conductive yarn being drawn into the odd-numbered heald frames and the even-numbered heald frames respectively; when drawing in the reed, two yarns are drawn into each reed, one each of the polyester yarn and the conductive yarn; The polyester yarn has a linear density of 20 to 60S / 2 and is white in color; the conductive yarn is a gray silver-plated nylon fiber sewing thread with a linear density of 200 to 300D, and the resistance of the conductive yarn is 2 to 4Ω / cm.

4. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: The optical fiber in step (1) is a polymer optical fiber with a diameter of 0.25 to 0.5 mm, the core layer of the optical fiber is PMMA, and the skin layer is fluororesin.

5. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: The same weaving length in step (1) is 7.5 to 12.5 mm.

6. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: In step (2), the optical fiber in the weft direction of the optical fiber fabric is woven in individually, and 10 to 15 cm of optical fiber is reserved at both ends of each fiber. The conductive yarn in the inner weft yarn is woven in continuously, and 10 to 15 cm of conductive yarn is reserved at both ends.

7. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: In step (2), the optical fiber bundle is partially bundled by using a heat shrink tube with a diameter of 3 to 7 mm to wrap the optical fiber partially, and using a hot air gun to heat shrink and shape it, and then cutting the optical fiber bundle to make the end flat.

8. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: In step (3), the laser engraving adopts a CO2 laser, the laser wavelength is 9.3 μm, the laser power is 15-35 W, the engraving speed is 2000 mm / s, and the filling density is 0.2 mm.

9. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: The photoelectric signal conversion circuit module in step (4) refers to a circuit module that converts the resistance signal into an RGB-LED light-emitting signal, including a signal conditioning circuit, a light-emitting control circuit, a single-chip microcomputer and a light-emitting module. After power is turned on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the single-chip microcomputer. In the single-chip microcomputer, the voltage signal is converted into a standard digital signal. The light-emitting control circuit judges the standard digital signal and outputs a corresponding pulse width modulated pulse signal to the light-emitting module to control the RGB-LED light-emitting signal.

10. The method for preparing a press-interactive light-changing optical fiber fabric according to claim 1, characterized in that: In step (4), the RGB-LED light source is a lamp bead that can convert light of different wavelengths; The power supply is a detachable rechargeable power supply with a capacity of 2000 to 10000 mA.

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