83 results about "Target fibers" patented technology

A wool and cashmere identification algorithm based on a gray level co-occurrence matrix model comprises an on-line identification process and a model learning process. The on-line identification process comprises the following steps: (1) taking an image of wool and cashmere fibers; (2) using a Gaussian filter to smoothly filter the image; (3) extracting a target from the image through canny-based edge detection and contour; (4) calculating the texture feature quantity, and using four statistical magnitudes, namely, contrast, energy, entropy, and correlation, to represent the texture; and (5) directly using an obtained feature vector as an input feature vector. The model learning process comprises the following steps: (1) accumulating a large number of wool and cashmere databases; (2) carrying out artificial labeling to make a machine clear about the type and location of a target fiber; (3) preprocessing and extracting the features of fiber images in the databases; and (4) adopting a three-layer artificial neural network. Through the algorithm, the type of fiber of wool and cashmere can be judged intelligently and accurately.

Provided is a fiber for detecting a target, a method of preparing the fiber for detecting the target, a method of detecting the target in a sample, a fiber complex including the fiber for detecting the target, and a kit including the fiber for detecting the target. The fiber may include a polymer, a target detecting material, and a metal nanoparticle, wherein the target material and the metal nanoparticle are fixed to the polymer. The method of preparing a fiber may include preparing a composition that includes a polymer, a target detecting material, and a metal nanoparticle and spinning the composition to prepare the fiber.

Specific types of compounds that impart highly effective softening, antistatic, and ironability characterostics to and for various types of launderable fabrics (such as garments, tablecloths, draperies, and the like) through a rinse-cycle application within a standard machine laundering process are provided. Such compounds provide effective lubricity to target fibers as well as simultaneous static dissipative characteristics either alone or, as one preferred embodiment, in combination with other typical fabric softening agents. Such a composition comprising or method utilizing such compounds thus provides a relatively simple, yet highly effective manner of imparting these highly desired properties to fabrics. A fabric treated with such compounds or in accordance with this method is also provided.

The invention provides a method for automatically forwardly/reversely tapering a fiber. According to the method, the external envelope of a flame in a fiber heating area in the tapering process is calculated according to the shape of a target fiber, and reciprocating of a flame front is controlled, so that a tapered fiber conforming to a target shape is prepared. Post-treatment of a fiber waveguide is realized by constant-speed reciprocating heating of the dotted flame and simultaneous stretch or compression of two ends of the fiber, and the movement speed of the dotted flame front and the stretch/compression speed of the two ends of the fiber can be optionally adjusted in the forward/reverse tapering process. The linear dispersion characteristic and the nonlinear Kerr characteristic of the tapered fiber can be greatly changed. The tapered fiber can be efficiently and laterally coupled with an external environment. The properties are quite widely applied to fiber optics and a plurality of fields including fiber sensing, optical frequency conversion, super-continuum broadening, quantum optics and the like.

The embodiments of the invention provide a multi-core fiber grating, a fiber sensor, and a manufacturing method of the multi-core fiber grating, and relate to the technical field of fiber sensors. Themulti-core fiber grating comprises a plurality of fiber cores and a cladding, wherein the cladding is wrapped by the plurality of fiber cores; the target fiber core among the plurality of fiber coresis arranged at the center of the cladding; and when the plurality of fiber cores generate bending strain, the wavelength of each fiber core is provided with different strain response rules so as to measure the amplitude and the direction of the bending strain generated from the plurality of fiber cores. The multi-core fiber grating is simple in structure.

The invention discloses a wool cashmere recognition algorithm based on Gabor wavelet analysis, and the algorithm comprises an online recognition flow and a model learning flow. The online recognition flow comprises the following steps: (1), taking an image of wool cashmere fibers (2), carrying out the smooth filtering of the image through employing a Gaussian filter, and achieving the image enhancement through the gray scale adjustment of the image; (3), extracting an image target through employing the edge detection and contour extraction based on canny; (4), extracting Gabor characteristics; (5), calculating a result. The model learning model comprises the following steps: (1), accumulating a large amount of wool cashmere data in a database; (2), determining the class of a target fiber and the position of the target fiber through manual marking; (3), carrying out the preprocessing and feature extraction of the fiber image in the database, wherein the step (3) is consistent with the steps (2) and (4) in the online recognition flow; (4), employing a two-class SVM classifier in a learning process. The method can achieve a high recognition rate, is quick in recognition speed, is high in accuracy of the recognition result, and is high in applicability.

The invention discloses a two-core optical splitter. The two-core optical splitter comprises a coupling fiber optic which is in butt joint with a target fiber optic and same with or similar to the target fiber optic in structure, wherein the coupling fiber optic is fixed on a first substrate and contacted with and fixed on one side of a double-line optical waveguide substrate; a first fiber core and a second fiber core in the coupling fiber optic are aligned with a first optical waveguide and a second optical waveguide of the double-line optical waveguide substrate; a first single core fiber optic and a second single core fiber optic are fixed on a second substrate and contacted with and fixed on the other side of the double-line optical waveguide substrate; and a third fiber core and a fourth fiber core of the first single core fiber optic and the second single core fiber optic in the coupling fiber optic are respectively aligned with the first optical waveguide and the second optical waveguide of the double-line optical waveguide substrate. According to the two-core optical splitter, two fiber cores of a two-core fiber optic can respectively conduct coupling and butt joint with independent fiber optics, respective output of optical signals transmitted in the two core through two single core fiber optics can be achieved, the two-core optical splitter is convenient to use, simple in structure, and low in cost, and has excellent application prospects.

The invention discloses a method for detecting the fiber distribution in a mixed fiber product. The method comprises the following steps: 1, collecting an original image of the mixed fiber product, and obtaining a low-noise gray scale image through denoising and gray scale transformation; 2, setting any fiber as target or non-target fibers; 3, cutting that image of the step '1' into small pixel maps, and selecting an appropriate threshold value to process the small pixel maps; 4, extracting that eigenvalue of the non-target fiber as noise, performing two-dimensional multi-level stochastic resonance on the image of the step '3', and extracting the target fiber accord to the result; 5, binarizing that image of the step '4', recombine the small images into the binarized images of the original size accord to the original cutting order, if the binarized images can display the target fiber outline, carrying out the next step, otherwise returning to the step '4'; 6, counting that number of target fib pixels of the restored image, and giving the fib distribution value of the mixed fiber product. By extracting the eigenvalues of the target and non-target fibers and by removing the non-target fibers to highlight the target fibers, the present invention has the advantages of simple operation and high processing accuracy.

The embodiment of the invention provides a multi-parameter optical fiber sensing detection method and system for a leading-down optical cable. The method comprises the steps that a detection system sends a detection signal to a target fiber core in a to-be-detected leading-down optical cable; a distributed optical fiber sensor is arranged along the line of the leading-down optical cable to be measured, and an optical fiber Bragg grating sensor and a Fabry-Perot grating sensor are arranged in the cable trench respectively and are welded to a target fiber core through optical fiber couplers respectively; the detection system receives a spectral signal reflected from the target fiber core, and determines comprehensive parameters of the to-be-detected leading-down optical cable according to the spectral signal. According to the multi-parameter optical fiber sensing detection method and system for the leading-down optical cable, multiple parameters of the leading-down optical cable are detected in a mode of combining distributed optical fiber sensors and point type optical fiber sensors, the physical state of the leading-down optical cable is fully visible, the leading-down optical cable is protected, and safe and reliable operation and maintenance are achieved.

The invention provides a method and a device used for preparing multifunctional anisotropic fiber with an adverse solvent. According to the method, channel number is changed to obtain anisotropic fiber of different surface numbers; channel opening shell structure shape can be changed to obtain anisotropic fiber of different morphologies; a polymer solution is added into a receiving bath solution so as to obtain target fiber. Fiber collecting is carried out using pulleys, and a collecting device. No chemical or ultraviolet light curing is adopted, and continuous obtaining of fiber is realized.Water is taken as the adverse solvent to prepare fiber, especially the multi-surface anisotropic fiber, and micrometer grade fiber is provided with a plurality of functions. Experiment equipment is simple, assembling is convenient, the adopted materials are degradable, no pollution is caused by the adopted material, the preparation method is simple and green, preparation is rapid, size is uniform,and the application prospect of the multifunctional anisotropic fiber is promising.

The invention relates to fiber and preparation methods thereof, in particular to a preparation of antistatic modified PBT fiber. The preparation method includes following steps: (1), adding modified graphene, a nano metal compound and butanediol into a reaction kettle; (2), adding terephthalic acid and a catalyst into the reaction kettle of the step (1), and rising temperature of a system to 200-220 DEG C for reaction for 2-3 h; (3), adding an antioxidant and a stabilizer, vacuumizing, rising temperature to 250-280 DEG C, and performing polycondensation to obtain modified PBT polyester; (4), subjecting the modified PBT polyester obtained in the step (3) to fusion spinning and cooling, and treating to obtain the target fiber. The antistatic modified PBT fiber prepared by the method has efficient and lasting antistatic performance, nontoxicity, high heat resistance and washing resistance and stable performance and is suitable for various application fields.

A conically tapered optical fiber with a small half-angle γ (e.g., less than 10⁻²) has been found able to support whispering gallery mode (WGM) resonances and can therefore be used to form a high-Q cavity. This finding has led to the ability to measure angstrom-level variations in the radius of an optical fiber by viewing the resonance spectrum at various locations where a sensor contacts an optical fiber being measured. An evaluation process is proposed where a microfiber sensor is brought into contact with a target fiber and the created WGM resonance is measured so that location radius variation can be characterized. The sensor is then removed from the target fiber and re-positioned to contact the fiber to another location to repeat the evaluation.

The invention discloses a method for preparing degradable fibers with good resilience. The method comprises the following steps of: mixing components A, B and C in a mass ratio of 100:(1.5-10):(0.5-2.5), spinning by using melt spinning and coiling equipment to obtain primary fibers, and balancing, drawing and shaping to obtain blend fibers; and balancing the blend fibers again to obtain the target fibers. The fibers prepared by the method are biomass polyester-based elastic fibers, and a main component P(3HB-co-4HB) has high biocompatibility and biodegradability and is sourced from biofermentation but not petroleum, so that the fibers are green sustainable environment-friendly fibers. The elastic fibers are prepared by a melting spinning technology, non polyurethane fibers are prepared by a solution spinning technology, and organic solvents are not used in the production process to avoid environmental pollution.

The invention relates to the technical field of electrospinning direct writing, in particular to a near field direct writing focusing and micro pattern separating method based on a PEO electrospinningfilm substrate, according the method, the electrospinning substrate combining the PEO electrospinning film and an aluminum foil is used for realizing focusing of electrospinning direct-writing jet flows and non-destructive separation of a micro-pattern of an electrospinning material which is insoluble in water. The method comprises the following steps: firstly, spinning a layer of water-soluble PEO fiber membrane on a grounding metal substrate by an electrostatic spinning technology to prepare a composite electrospinning substrate, then using an electrospinning direct-writing technology to print the micro-pattern on the substrate, and finally, soaking the composite substrate together with the micro-pattern into a selected solution, the PEO can be dissolved, the micro-pattern cannot be dissolved, and at the moment, due to the fact that a material connected with the target fiber membrane and the substrate is dissolved, the micro-pattern is separated from the substrate. According to themethod, the self-focusing of electrospinning direct-writing and non-destructive separation of the electrospinning direct-writing micro-pattern and the metal substrate can be realized.

The invention provides a data processing method, device and system. As fiber channel identification of fiber channel nodes and medium access control addresses in the Ethernet are configured by address distributing equipment located in the Ethernet according to an IP broadcast protocol, when the first fiber channel code in the Ethernet requires communication interaction with the target node, a broadcast message comprising source fiber channel identification of the first fiber channel node and target fiber channel identification of the target node is sent, and when the first fiber channel code receives a response message comprising the first medium access control address, corresponding to the target fiber channel identification of the target node and being returned back by the second fiber channel node in the Ethernet, information to be transmitted is directly sent to the target node according to the first medium access control address. Accordingly, when the fiber channel nodes in the Ethernet conduct communication interaction, data forwarding is conducted not through an FCF, processing sources are saved, and data transmission efficiency is improved.

The present invention relates to the technical field of functional fiber preparation, and provides a functional fiber preparation device and method, the functional fiber preparation device at least comprises: a hot drawing structure suitable for drawing a preform into a to-be-pressed fiber; the pressing structure comprises a pressing roller and a driving device, the surface of the pressing roller is provided with a micro-nano structure, and the feeding end of the pressing roller corresponds to the discharging end of the hot drawing structure; and the driving device is connected with the pressing roller and is suitable for driving the pressing roller to rotate so as to press the to-be-pressed fibers into target fibers with micro-nano structures on the surfaces. According to the preparation device of the functional fiber, the preform is subjected to wire drawing operation through the hot drawing structure, so that the fiber to be pressed is formed; and pressing the to-be-pressed fiber by adopting a pressing roller with a micro-nano structure on the surface so as to form a target fiber with a micro-nano structure on the surface. Waste gas and waste water are not generated in the preparation process, so that the influence on the environment is avoided.