A method for preparing press-interactive light-changing optical fiber fabric

Abstract

The present invention relates to a method for preparing a press-to-interactive light-changing optical fiber fabric. The fabric body adopts a double-layer structure with alternating layers, with optical fibers as the surface weft yarns and conductive yarns as the surface warp yarns. The conductive yarns and optical fibers are arranged alternately to form the inner weft yarns, and polyester yarns are used as the inner warp yarns. The proportion of conductive yarns of the same weaving length in the inner weft yarns is controlled to gradually decrease, thereby weaving an integrated flexible optical fiber fabric with integrated conductive materials. The optical fibers are then partially bundled and laser engraved to obtain a bundled optical fiber fabric with a pattern. Finally, the fabric is connected to a photoelectric signal conversion circuit module to obtain a press-to-interactive light-changing optical fiber fabric. The present invention incorporates polymer optical fibers into the surface weft and inner weft of the double-layer fabric, and conductive yarns into the surface warp and inner weft of the double-layer fabric. Through yarn configuration and structural design, the integrated weaving of conductive and luminescent materials is achieved. The density of the conductive yarns in the inner weft varies in a gradient pattern, enhancing the interactivity and functionality of the optical fiber fabric.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent interactive textiles and relates to a method for preparing 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 global textile industry has shifted its focus from traditional garment manufacturing to high-tech textiles, moving towards multifunctionality and high added value. Smart interactive textiles are a popular technology that has emerged in recent years. By incorporating conductive and other functional fibers or sensors into textiles, this technology imbues traditional textiles with more proactive interactive capabilities. Currently widely used in smart homes, smart cockpits, smart wearables, and healthcare, the demand for luminous interactivity in these textiles is growing. Their functions are no longer limited to lighting and decoration, but are expected to become a key window for human-computer interaction.

[0003] Conductive materials, as carriers of electronic circuits, play a crucial 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 diverse performance requirements and application scenarios. Currently, smart textiles developed based on conductive materials generally exhibit excellent conductive sensing properties, primarily characterized by high sensitivity and a wide sensing range. However, there are still difficulties in stabilizing the output of linear sensing electrical signals. Furthermore, the interactive functions of these textiles currently rely primarily on external electronic components, lacking integrated, visual 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 that the luminous effect is not obvious in bright environments.

[0005] For example, in the literature (Novel Fabrication Method for Pressure-Sensing PolymericOptical Fiber (POF) Fabric with Non-Direct-Contact Conductive System. Appl. Sci. 2024, 14, 2284. https: / / doi.org / 10.3390 / app14062284), the conductive yarns in the weft of the double-layer fabric are evenly arranged, which cannot achieve gradient changes in electrical signals. 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 preparation method of 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-activated interactive light-changing optical fiber fabric.

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

[0009] A method for preparing a press-activated 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), conductive yarn and optical fiber arranged alternately to form the inner weft yarn (inner weft), polyester yarn as the inner warp yarn (inner warp), and the proportion of 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 material;

[0011] (2) Bundling the optical fiber sections 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 is not woven into the weft end;

[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 utilizes a method of weaving polymer optical fibers into the surface and inner weft of a double-layer fabric, and conductive yarns into the surface and inner weft, enabling the integrated weaving of optical fiber fabrics with integrated conductive materials. Weaving polymer optical fibers into the surface and inner weft of the double-layer fabric is intended to construct the main body of the luminous fabric, ensuring the surface luminescence effect and structural stability of the fabric. Since polymer optical fibers cannot withstand the significant tension during warp weaving, they are typically woven into the fabric as weft yarns. Furthermore, weaving conductive yarns into the surface and inner weft of the double-layer fabric is intended to create a fabric circuit. The conductive yarns woven into the inner weft form a fixed resistor, while the conductive yarns woven into the surface warp act as a short-circuit switch. This allows the fabric's resistance to change when the surface warp contacts the conductive yarns in the inner weft after power is applied. Furthermore, weaving the conductive yarns into the surface and inner weft effectively prevents excessive exposure of the conductive yarns to the fabric surface, thereby maintaining the luminous fabric's aesthetic quality and preventing unstable pressure signals caused by hand sweat and dirt contacting the fabric.

[0015] In existing double-layer fabrics, the conductive yarns in the inner weft are evenly arranged to ensure that when the fabric is pressed, the short-circuited resistance value remains essentially the same, or within a certain range. The optoelectronic signal conversion circuit module only needs to identify the electrical signal changes within this range and provide a specific optical signal feedback. However, the present invention differs from the existing technology by adopting a gradient pattern in the inner weft. This results in a gradient-like resistance value within the same weaving length. This allows a finger to press and touch adjacent warp locations on the fabric surface after power is applied. The conductive yarns in the outer warp come into contact with the gradient-arranged conductive yarns in the inner weft, short-circuiting the resistance of these portions of the inner weft. The short-circuited resistance value also changes in a gradient pattern. This gradient-like electrical signal is then recognized and processed by the optoelectronic signal conversion circuit module, ultimately expressing itself as different luminous color variations in the fabric. This gradient-like electrical signal creates a different luminous color interaction effect when pressing and touching different warp locations on the fabric surface, giving the fiber optic fabric greater interactivity and the potential for greater functionality. Existing methods for achieving similar effects typically involve constructing resistive, capacitive, or piezoelectric sensors within the fabric, generating a gradient-changing electrical signal in response to external pressure. However, these approaches employ complex sensor structures, making it difficult to achieve the integrated weaving of the flexible fiber optic fabric with integrated conductive material as in the present invention. Consequently, the integrated, visual, interactive feedback provided by the present invention is lacking.

[0016] As the preferred technical solution:

[0017] In the method for preparing the press-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] The method for preparing the press-interactive light-changing optical fiber fabric as described above comprises the following steps: (1) before weaving, the polyester yarn and the conductive yarn are arranged in an alternating manner and warped, drawn in, and reeded in a ratio of 1:1;

[0019] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

[0020] The polyester yarn has a linear density of 20 to 60 S / 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 300 D, and the resistance of the conductive yarn is 2 to 4 Ω / cm.

[0021] In the method for preparing the press-activated 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 sheath layer is fluororesin.

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

[0023] According to the method for preparing a press-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 of each fiber 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 press-type interactive light-changing optical fiber fabric as described above, the partial optical fiber bundling in step (2) refers to wrapping the optical fibers partially with heat shrink tubing with a diameter of 3 to 7 mm, performing heat shrinkage and shaping with a hot air gun, and then shearing the optical fiber bundle to make the end flat.

[0025] In the method for preparing the 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-activated 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 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.

[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 range of 2000 to 10000 mA.

[0029] Beneficial effects:

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

[0031] (2) The present invention provides a method for preparing a press-activated interactive light-changing optical fiber fabric, wherein the arrangement density of the conductive yarn in the inner weft changes in a gradient pattern. After power is applied, the conductive yarn in the outer warp contacts the conductive yarn of different arrangement density in the inner weft, short-circuiting the resistance of the conductive yarn in the inner weft. The change in the electrical signal is processed by a photoelectric signal conversion circuit module and is ultimately expressed as a change in the luminous color of the fabric. By pressing the surface of the fabric to stimulate the change in the luminous color of the fabric, the interactivity and functionality of the optical fiber fabric are enhanced.

[0032] (3) The present invention relates to a method for preparing a press-activated interactive light-changing optical fiber fabric. Laser engraving processing 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 press-interactive light-changing optical fiber fabric proposed in the present invention; Figure (a) is before the layer change, and Figure (b) is after the layer change, wherein 1 and 2 represent the surface layer structure, and I and II represent the inner layer structure; the upper left corner figures of Figures (a) and (b) are the weft drawing diagrams, the arrangement of × indicates the use of 8 heald frames and the forward drawing method, the middle left figure is the reed drawing diagram, the arrangement of black grids indicates that 2 yarns are passed through each reed, the lower left figure is the structure diagram, the black grids represent the warp structure points of the surface layer of the fabric, the × grids represent the warp structure points of the inner layer of the fabric, and the ○ grids represent the unique warp structure 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 weaving machine.

[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of a double-layer fabric in a 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 the fabric interaction system in the method for manufacturing the 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 the photoelectric signal conversion circuit module in the method for manufacturing the press-interactive light-changing optical fiber fabric proposed by the present invention.

[0037] Figure 5 This is a graph showing the change in resistance 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 segmentation and bundling, 12-press-interactive light-changing optical fiber fabric. DETAILED DESCRIPTION

[0040] Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only used to illustrate the present invention and are not used in limiting the scope of the present invention.In addition, 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 equally within the scope limited by the appended claims of the application.

[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 resistance of the fabric's conductive part when pressing the fabric surface, as well as the gradient of the change in resistance when pressing and touching different locations on the fabric surface. Specifically, the specific resistance value needs to be measured. A VC890D multimeter (Shenzhen Yisheng Shengli Technology Co., Ltd., Shenzhen, China) was set to the resistance measurement range (20 kΩ). The red and black electrodes were connected to the ends of the inner conductive yarn of the double-layer fabric, respectively. The measured resistance value of the fabric conductive part (initial value) was recorded. A finger was pressed on a certain location on the fabric surface, and the measured resistance value (pressing value) was recorded. After the finger was released from the fabric, the measured resistance value (recovery value) was recorded. This operation was repeated 1000 times. While maintaining a fixed transverse position, the same distance was applied to different locations on the fabric surface along the warp direction, and the above operation was repeated for each location. The measured resistance change of the fabric conductive part was plotted on a graph to obtain the fabric pressure-sensing performance test results.

[0043] Luminous performance index: Luminous performance refers to the surface luminous brightness value of the optical fiber fabric after coupling with the light source, especially the comparison between the luminous brightness value of the complex pattern area after laser engraving and other areas. The TES-137 luminance meter (TES Electronics Industrial Co., Ltd., Taiwan, China) can be used to measure the brightness value of the surface of the 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 luminous 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 luminous performance.

[0044] Example 1

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

[0046] (1) Raw material preparation:

[0047] Optical fiber: 0.25 mm diameter polymer optical fiber (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), with a core layer of PMMA and a sheath of 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, and a resistance of 3Ω / cm;

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

[0051] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

[0052] (2) Figures 1-2 As shown, the fabric body adopts a double-layer structure with alternating layers on the surface and on the back. Both the surface and back layers of the fabric adopt a plain weave. Optical fiber I 2 is used as the surface weft yarn, conductive yarn I 1 is used as the surface warp yarn, conductive yarn II 4 and optical fiber II 5 are arranged alternately to form the back weft yarn, and polyester yarn 3 is used as the back warp yarn. The proportion of conductive yarn in the back weft yarn is gradually reduced for every 10 mm of the same weaving length, thereby weaving an integrated flexible optical fiber fabric with integrated conductive materials.

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

[0054] (4) The conductive yarn in the inner weft yarn of step (2) is woven 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 are sorted out;

[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 non-woven in the weft direction of the patterned bundled optical fiber fabric are connected as input resistor signal modules to the photoelectric signal conversion circuit module 8. The output of the photoelectric signal conversion circuit module 8 is an 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. When the power supply 10 is turned on, the press-sensitive interactive light-changing optical fiber fabric 12 is obtained.

[0058] The RGB-LED light source is a lamp bead that can convert different wavelengths of light, with an applicable current of 450 to 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 resistance signals into RGB-LED light signals. It includes a signal conditioning circuit, a light control circuit, a single-chip microcomputer, and a light module. When powered on, the signal conditioning circuit converts the resistance signal into a voltage signal and inputs it into the STM32 single-chip microcomputer. In the STM32 single-chip microcomputer, the voltage signal is converted into a standard digital signal. The light control circuit judges the standard digital signal and outputs a corresponding pulse-width modulated (PWM) pulse signal to the WS2812B light module, controlling the RGB-LED light signal and thus changing the light color of the fabric. Through the above-mentioned fabric interactive system design, the present invention can obtain a press-to-interactive light-changing fiber fabric that is both functional and aesthetically pleasing.

[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. It can be seen from the figure that when pressing a position on the fabric surface with a finger, the rate of change of the resistance value of the conductive part of the fabric is basically stable at about 20%, and this electrical signal change is repeatable when the same position is pressed repeatedly. 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 shown in the figure. Figure 6 As shown, 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-activated interactive light-changing optical fiber fabric comprises the following steps:

[0064] (1) Raw material preparation:

[0065] Optical fiber: 0.3 mm diameter polymer optical fiber (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), with a core layer of PMMA and a sheath of 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 alternating manner and warped, drawn in, and reeded in a 1:1 ratio;

[0069] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

[0070] (2) The main body of the fabric adopts a double-layer structure with alternating layers on the surface and on the inside, with optical fiber as the surface weft yarn and conductive yarn as the surface warp yarn. The conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is controlled to gradually decrease 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 both the surface layer and the inner layer of the fabric adopt plain weave;

[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 each end of each fiber. The optical fibers are partially wrapped with 3 mm diameter heat shrink tubing, and heat shrinked and shaped using a hot air gun. The optical fiber bundle is then cut to make the ends flat, thus completing the optical fiber bundle.

[0072] (4) The conductive yarn in the inner weft yarn of step (2) is woven 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 are sorted out;

[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) The two ends of the conductive yarn not woven into the weft direction of the bundled optical fiber fabric with a pattern are connected as input resistance signal modules 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. The power is turned on to obtain a 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 resistance signals into RGB-LED light-emitting signals. It includes 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 STM32 single-chip microcomputer. In the STM32 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 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-activated interactive light-changing optical fiber fabric comprises the following steps:

[0080] (1) Raw material preparation:

[0081] Optical fiber: 0.35 mm diameter polymer optical fiber (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), with a core layer of PMMA and a sheath of 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 and a resistance of 2.5Ω / cm;

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

[0085] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

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

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

[0088] (4) The conductive yarn in the inner weft yarn of step (2) is woven 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 are sorted out;

[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) The two ends of the conductive yarn not woven into the weft direction of the bundled optical fiber fabric with a pattern are connected as input resistance signal modules 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. The power is turned on to obtain a 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 resistance signals into RGB-LED light-emitting signals. It includes 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 STM32 single-chip microcomputer. In the STM32 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 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-activated interactive light-changing optical fiber fabric comprises the following steps:

[0096] (1) Raw material preparation:

[0097] Optical fiber: 0.4 mm diameter polymer optical fiber (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), with a core layer of PMMA and a sheath of 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 alternating manner and warped, drawn in, and reeded in a 1:1 ratio;

[0101] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

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

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

[0104] (4) The conductive yarn in the inner weft yarn of step (2) is woven 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 are sorted out;

[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) The two ends of the conductive yarn not woven into the weft direction of the bundled optical fiber fabric with a pattern are connected as input resistance signal modules 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. The power is turned on to obtain a 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 resistance signals into RGB-LED light-emitting signals. It includes 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 STM32 single-chip microcomputer. In the STM32 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 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-activated interactive light-changing optical fiber fabric comprises the following steps:

[0112] (1) Raw material preparation:

[0113] Optical fiber: 0.5 mm diameter polymer optical fiber (manufacturer: Hubei Senwo Optoelectronics Technology Co., Ltd., brand No. SWO211251D3Q), with a core layer of PMMA and a sheath of 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 alternating manner and warped, drawn in, and reeded in a 1:1 ratio;

[0117] Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn;

[0118] (2) The main body of the fabric adopts a double-layer structure with alternating layers on the surface and the inner layer, with optical fiber as the surface weft yarn and conductive yarn as the surface warp yarn. The conductive yarn and the optical fiber are arranged alternately to form the inner weft yarn, and polyester yarn is used as the inner warp yarn. The proportion of the conductive yarn in the inner weft yarn is controlled to gradually decrease 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, both the surface layer and the inner layer of the fabric adopt plain weave;

[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 each end of each fiber. The optical fibers are partially wrapped with 7 mm diameter heat shrink tubing, and heat shrinked and shaped using a hot air gun. The optical fiber bundle is then cut to make the ends flat, thus completing the optical fiber bundle.

[0120] (4) The conductive yarn in the inner weft yarn of step (2) is woven 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 are sorted out;

[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) The two ends of the conductive yarn not woven into the weft direction of the bundled optical fiber fabric with a pattern are connected as input resistance signal modules 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. The power is turned on to obtain a 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 8000mA rechargeable power supply;

[0125] The photoelectric signal conversion circuit module refers to a circuit module that converts resistance signals into RGB-LED light-emitting signals. It includes 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 STM32 single-chip microcomputer. In the STM32 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 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 press-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. The polyester yarn is used as the inner warp yarn, and the proportion of the conductive yarn in each same weaving length in the inner weft yarn is controlled to gradually decrease, thereby weaving an integrated flexible optical fiber fabric with integrated conductive materials; (2) Bundling the optical fiber sections 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 is 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 alternating manner and warped, drawn in, and reeded in a ratio of 1:1; Drawing in the healds means using 8 heald frames on the loom and adopting the straight-through 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 reeds, two yarns are drawn into each reed, one each of polyester yarn and conductive yarn; The polyester yarn has a linear density of 20 to 60 S / 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 300 D, and the resistance of the conductive yarn is 2 to 4 Ω / 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 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.

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 wrapped with a heat shrink tube with a diameter of 3 to 7 mm, and heat-shrinked and shaped with a hot air gun, and then the optical fiber bundle is cut 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 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.

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 modulation 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 range of 2000 to 10000 mA.

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