CN101587079B - Multispectral chromatic polarization detection method of foreign impurity in the textile raw material - Google Patents
Multispectral chromatic polarization detection method of foreign impurity in the textile raw material Download PDFInfo
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Abstract
The present invention relates to a multispectral chromatic polarization detection method of foreign impurity in the textile raw material and a device thereof, which belongs to the field of automatic detecting technique and optical detecting in the textile industry. According to the method of the invention, the textile raw material to be detected is irradiated with the white polarized light. When the foreign impurity appears, the kind of the foreign impurity, the color spectrum interfered by the white polarized light and the thickness and light intensity information of the textile raw material are obtained through the image analysis. Then the foreign impurity is irradiated by the modulated multispectral polarized light, and the foreign impurity is identified from the obtained multispectral polarized image. The device of the invention comprises a transmittance and reflection ultraviolet multispectral polarized light source, an optical wave plate, a polarized light analyzer, a color camera or a color infrared camera, an image analyzer and a dispersion prism. The method and the device of the invention have the advantages of simple operation, low detection cost, and capacity for simultaneously detecting out the dominant impurities of cotton, wool, etc. in the textile raw material and the implicit impurity that is hard to detect by the prior method.
Description
Technical field
The present invention relates to the multispectral chromatic polarization detection method and the device thereof of foreign impurity in a kind of textile raw material, belong to textile industry test technique automatic and optical detective technology field.
Technical background
In recent years, it is outstanding unusually to mix the problem of foreign impurity in the textile raw material such as cotton, wool.The foreign impurity that is mingled in the textile raw material not only influences the quality grade of textile raw material, and brings serious problems for follow-up weaving processing.For example, when foreign impurity entered the fabrics printing and dyeing operation, many defectives such as the fault that can not dye can appear in textile surface, breakpoint had a strong impact on the quality grade of textile; And for example, mix the textile raw material that foreign impurity is arranged and in spinning process, can cause yarn breakage, knotting, influence its production efficiency.
The foreign impurity that is mingled in the textile raw material mainly is divided into two big classes: a class be on color and the form with coloured foreign impurity of textile raw material obvious difference, as flax silk, colored plastic film and coloured man-made fiber etc., be called dominance impurity; An other class is to occur more and impalpable white and colourless foreign impurity in recent years, as colourless agricultural mulching, colourless plastic sheeting, white polypropylene fibre silk and white hair (as the pig hair) etc., is called recessive impurity.Dominance impurity and recessive impurity are mingled in the textile raw material, processing through follow-up spinning process, longitudinal fracture, laterally separately, quantity is multiplied, become tiny fibrous impurity (being commonly called as " foreign fiber "), be difficult to identification, thereby before entering spinning process, remove the common recognition that the dominance impurity be mingled in the textile raw material and recessive impurity have become textile industry.
Owing to be mixed with textile raw material big flow rapid movement on production line of foreign impurity, human eye identification is extremely difficult, basically can't pick, therefore adopt the foreign impurity in the instrument letter sorting textile raw material to become domestic and international textile industry problem demanding prompt solution, the foreign impurity detection method also becomes the focus of domestic and international research.At present, the method that is used for discerning textile raw material foreign impurities such as cotton, wool mainly contains following several: X-ray imaging analysis method, infrared thermography, ultrasonic imaging method, photodiode arrangement probe method and color camera scanning imagery method.Wherein, though X-ray imaging analysis method and infrared thermography have certain detection effect to foreign impurity, because constructing system costs an arm and a leg, resolution is low, and detection speed is low etc., and factor is difficult to use in industry spot; And ultrasonic imaging method, photodiode arrangement probe method be also because detection speed is low, and imaging resolution is low, can't detect tiny factors such as foreign impurity and also be difficult to use in industry spot.
Really be applied at present industry spot and what occupy market is color camera scanning imagery method.Color camera scanning imagery method had become in recent years the difficult point of research both at home and abroad to better, still but very difficult to the detection of recessive impurity with the dominance impurity detection effect of cotton obvious difference on color and the form.At present, can detect the white polypropylene fibre silk that part contains whitening agent in conjunction with the color camera scanning imagery method of Ultraluminescence effect detection method, but to do not contain lower white polypropylene fibre silk of whitening agent or whitening agent content and colourless agricultural mulching, colourless plastic sheeting, animality white protein matter fiber recessive impurity such as (as the pig hairs) but can't detect.
Summary of the invention
The objective of the invention is to propose the multispectral chromatic polarization detection method and the device thereof of foreign impurity in a kind of textile raw material, to overcome the weak point of existing detection method and technology, dominance impurity in the textile raw materials such as cotton, wool and recessive impurity are detected simultaneously.
The multispectral chromatic polarization detection method of foreign impurity in the textile raw material that the present invention proposes may further comprise the steps:
(1) contain the tested textile raw material of foreign impurity with the white polarizing light irradiation in the multispectral polarizing light source of ultraviolet enhancement, after this white polarized light changes polarization state through foreign impurity in the tested textile raw material, outgoing from tested textile raw material;
(2) to above-mentioned from tested textile raw material the white polarized light of outgoing carry out the polarization of phase compensation and polarization, obtain the chromatic polarization of the white polarized light of foreign impurity in the textile raw material;
(3) gather the chromatic polarization image of above-mentioned white polarized light with video-unit, this image analysis is obtained the kind of foreign impurity with the morphology disposal route; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal; According to the kind of foreign impurity in the above-mentioned tested textile raw material, when foreign impurity did not have fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained multispectral polarized light; When foreign impurity had fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained the multispectral polarized light of ultraviolet enhancement;
(4) making above-mentioned multispectral polarized light that obtains or the multispectral polarizing light irradiation of ultraviolet enhancement to the tested textile raw material that contains foreign impurity, is multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode that polarization state changes through the polarized light of textile raw material outgoing;
(5) multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode to outgoing in the step (4) carries out phase compensation and polarization polarization, obtains the multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode of foreign impurity in the tested textile raw material;
(6) utilize described video-unit to gather above-mentioned multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode, from this image, discern foreign impurity.
The multispectral chromatic polarization pick-up unit of foreign impurity in the textile raw material that the present invention proposes, first kind of frame mode comprises:
The multispectral polarizing light source of ultraviolet transmissive enhancement mode, place a side of tested textile raw material, be used for producing a kind of of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement, and vertical irradiation contains the tested textile raw material of foreign impurity, after foreign impurity changes polarization state in textile raw material, transmission from textile raw material;
The multispectral polarizing light source of reflection ultraviolet enhancement, place the opposite side of tested textile raw material, be used for producing a kind of of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement, and vertical irradiation contains the tested textile raw material of foreign impurity, after foreign impurity changes polarization state in textile raw material, from textile raw material, reflect;
An Amici prism is used to make the optical path direction of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement that the multispectral polarizing light source of above-mentioned reflection ultraviolet enhancement sends to change the tested textile raw material of 90 degree back vertical incidence; The multispectral polarized light of white polarized light, multispectral polarized light or ultraviolet enhancement after transmission and the polarization state that reflects change from above-mentioned tested textile raw material forms and detects light path;
An optical wave plate, a polarized light analyzing device and a video-unit, the three is installed on the above-mentioned detection light path from left to right successively, and described optical wave plate is used for compensating from the white polarized light of tested textile raw material outgoing and the interference phase difference of multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode; Described polarized light analyzing device is used for carrying out the polarization polarization to above-mentioned through two kinds of polarized lights after the phase compensation; Described video-unit is used to gather white polarized light chromatic polarization image, multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode that forms after above-mentioned polarized light analyzing device polarization polarization;
An image dissector is used for the chromatic polarization image of the above-mentioned white polarized light of video-unit collection is analyzed; With the morphology disposal route this image is analyzed, obtained the kind of foreign impurity; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal.
The multispectral chromatic polarization pick-up unit of foreign impurity in the textile raw material that the present invention proposes, second kind of frame mode comprises:
The multispectral polarizing light source of ultraviolet transmissive enhancement mode, place a side of tested textile raw material, be used for producing a kind of of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement, and contain the tested textile raw material of foreign impurity with small angle inclination irradiation, after foreign impurity changes polarization state in textile raw material, transmission from textile raw material;
The multispectral polarizing light source of reflection ultraviolet enhancement, place the opposite side of tested textile raw material, be used for producing a kind of of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement, and contain the tested textile raw material of foreign impurity with small angle inclination irradiation, after foreign impurity changes polarization state in textile raw material, from textile raw material, reflect; The reflected light of the transmitted light of transmission and above-mentioned tested textile raw material reflection merges formation detection light path from above-mentioned tested textile raw material;
An optical wave plate, a polarized light analyzing device and a video-unit, the three is installed on the above-mentioned detection light path from left to right successively; Described optical wave plate is used for compensating from the white polarized light of tested textile raw material outgoing and the interference phase difference of multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode; Described polarized light analyzing device is used for carrying out the polarization polarization to above-mentioned through two kinds of polarized lights after the phase compensation; Described video-unit is used to gather white polarized light chromatic polarization image, multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode that forms after above-mentioned polarized light analyzing device polarization polarization;
An image dissector is used for the chromatic polarization image of the above-mentioned white polarized light of video-unit collection is analyzed, and with the morphology disposal route this image is analyzed, and obtains the kind of foreign impurity; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal.
In the device of above-mentioned two kinds of frame modes, multispectral polarizing light source of ultraviolet transmissive enhancement mode or reflection ultraviolet enhancement multispectral polarizing light source comprise: heat dissipation base, by a plurality of white light emitting diodes and linear at interval linear diode array, cylindrical lens and the polaroid that rearranges of a plurality of multispectral auxiliary light emission diodes; Described heat dissipation base is fixed in the rear portion in the housing; Described linear diode array is fixed on the interior heat dissipation base of housing; Described cylindrical lens places the place ahead of linear diode array; Described polaroid places housing foremost.Wherein, multispectral auxiliary light emission diode can in the multispectral light emitting diode of colour, ultraviolet spectrum light emitting diode or the infrared spectrum light emitting diode any one or multiple; Polaroid can be visible light polaroid or visible light infrared polarization sheet.
In the device of above-mentioned two kinds of frame modes, video-unit is color camera or color infrared camera.
In the device of above-mentioned two kinds of frame modes, polarized light analyzing device is visible light polarized light analyzing device or visible light infrared polarization light analyzer.
The multispectral chromatic polarization detection method and the device thereof of foreign impurity in the textile raw material that the present invention proposes, its advantage is: make multispectral polarizing light source of ultraviolet transmissive enhancement mode and the multispectral polarizing light source of reflection ultraviolet enhancement send white polarized light by spectrum light intensity control signal, and tested textile raw material is carried out transmission and reflection.When foreign impurity occurring in the tested textile raw material, video-unit is gathered the white polarized light chromatic polarization image of this foreign impurity, after analyzing this image, image dissector obtains spectrum light intensity control signal, control the multispectral polarizing light source of above-mentioned ultraviolet transmissive enhancement mode and make it send multispectral polarized light or the multispectral polarized light of ultraviolet enhancement, and shine the tested textile raw material that contains this foreign impurity once more with the multispectral polarizing light source of reflection ultraviolet enhancement.Multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode after changing from the polarization state of above-mentioned tested textile raw material transmission and reflection, form multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode through phase compensation and polarization polarization back, identify this foreign impurity after gathering above-mentioned multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode with video-unit.Owing to adopted the detection method of multispectral chromatic polarization or the multispectral chromatic polarization of ultraviolet enhancement, improved the discrimination of foreign impurity in the tested textile raw material.Compare with like product, patent and detection technique, detection method of the present invention and device are not only simple to operate, the detection cost is low, and dominance impurity in the textile raw materials such as cotton, wool and existing method can't can be detected by detected recessive impurity simultaneously.
Description of drawings
Fig. 1 is an index path of implementing the inventive method.
Fig. 2 is an another kind of index path of implementing the inventive method.
Fig. 3 is the structural representation of the multispectral polarizing light source of ultraviolet enhancement that uses in the inventive method.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the circuit block diagram of image dissector in apparatus of the present invention.
Among Fig. 1-Fig. 4, the 1st, tested textile raw material, the 2nd, the multispectral polarizing light source of ultraviolet transmissive enhancement mode, the 3rd, the multispectral polarizing light source of reflection ultraviolet enhancement, the 4th, detect light path, the 5th, optical wave plate, the 6th, polarized light analyzing device, the 7th, color camera or color infrared camera, the 8th, video signal, the 9th, image dissector, the 10th, spectrum light intensity control signal, the 11st, Amici prism, the 12nd, heat dissipation base, the 13rd, white light emitting diode, the 14th, multispectral auxiliary light emission diode, the 15th, cylindrical lens, the 16th, polaroid, the 17th, white polarized light, the multispectral polarized light of multispectral polarized light or ultraviolet enhancement, the 18th, housing, the 19th, multispectral light emitting diode matrix.
Embodiment
The multispectral chromatic polarization detection method of foreign impurity in the textile raw material that the present invention proposes may further comprise the steps:
(1) contain the tested textile raw material of foreign impurity with the white polarizing light irradiation in the multispectral polarizing light source of ultraviolet enhancement, after this white polarized light changes polarization state through foreign impurity in the tested textile raw material, outgoing from tested textile raw material;
(2) to above-mentioned from tested textile raw material the white polarized light of outgoing carry out the polarization of phase compensation and polarization, obtain the chromatic polarization of the white polarized light of foreign impurity in the textile raw material;
(3) gather the chromatic polarization image of above-mentioned white polarized light with video-unit, this image analysis is obtained the kind of foreign impurity with the morphology disposal route; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal; According to the kind of foreign impurity in the above-mentioned tested textile raw material, when foreign impurity did not have fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained multispectral polarized light; When foreign impurity had fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained the multispectral polarized light of ultraviolet enhancement;
(4) making above-mentioned multispectral polarized light that obtains or the multispectral polarizing light irradiation of ultraviolet enhancement to the tested textile raw material that contains foreign impurity, is multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode that polarization state changes through the polarized light of textile raw material outgoing;
(5) multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode to outgoing in the step (4) carries out phase compensation and polarization polarization, obtains the multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode of foreign impurity in the tested textile raw material;
(6) utilize described video-unit to gather above-mentioned multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode, from this image, discern foreign impurity.
Figure 1 shows that a kind of embodiment of apparatus of the present invention, be the coaxial-type light path, by the multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode, the multispectral polarizing light source 3 of reflection ultraviolet enhancement, optical wave plate 5, polarized light analyzing device 6, color camera or color infrared camera 7, image dissector 9 and Amici prism 11 are formed.At first spectrum light intensity control signal 10 multispectral polarizing light source 2 of control ultraviolet transmissive enhancement mode and the multispectral polarizing light sources 3 of reflection ultraviolet enhancement that produce with image dissector 9 make it send white polarized light, and the tested textile raw material 1 of vertical irradiation.Wherein reflect the multispectral polarizing light source 3 of ultraviolet enhancement send white polarized light need be after Amici prism 11 changes optical path direction 90 degree could the tested textile raw material 1 of vertical incidence on.When foreign impurity occurring in the tested textile raw material 1, after above-mentioned white polarized light changed polarization state through foreign impurity in the textile raw material, transmission and reflection from textile raw material formed and detect light path 4.Carry out the polarization of phase compensation and polarization respectively with the white polarized light on optical wave plate 5 and 6 pairs of above-mentioned detection light paths 4 of polarized light analyzing device, obtain the chromatic polarization of the white polarized light of foreign impurity in the textile raw material.With the chromatic polarization image of color camera or the above-mentioned white polarized light of color infrared camera 7 collections, with image dissector 9 this image is analyzed then.With the form of foreign impurity in the white of the edge extracting Algorithm Analysis in the morphology disposal route polarized light chromatic polarization image, obtain the kind of foreign impurity; Analyze the color of foreign impurity in the white polarized light chromatic polarization image with RGB color space disposal route, obtain the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With the thickness degree of textile raw material diverse location in the gradation of image spatial manipulation methods analyst white polarized light chromatic polarization image, obtain the thickness intensity signal of diverse location; At last, in conjunction with the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of diverse location, produce the spectrum light intensity control signal 9 of multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement.When the foreign impurity of textile raw material did not have fluorescent effect, above-mentioned spectrum light intensity control signal was regulated the spectrum and the light intensity of multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement, obtains multispectral polarized light; When the foreign impurity in the textile raw material has fluorescent effect, above-mentioned spectrum light intensity control signal is regulated the spectrum and the light intensity of multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement, obtains the multispectral polarized light of ultraviolet enhancement.Shine tested textile raw material 1 once more with above-mentioned multispectral polarized light that obtains or the multispectral polarized light of ultraviolet enhancement, transmission and reflection from tested textile raw material 1 behind the above-mentioned foreign impurity change polarization state in textile raw material obtains multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode that polarization state changes; The multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode that change with optical wave plate 5 and 6 pairs of above-mentioned polarization states of polarized light analyzing device carry out the polarization of phase compensation and polarization respectively, obtain the multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode of foreign impurity in the textile raw material; Gather above-mentioned multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode with above-mentioned color camera or color infrared camera 7, this foreign impurity of identification from image.
Figure 2 shows that the another kind of embodiment of apparatus of the present invention, be low-angle incident-type light path.Be with above-mentioned coaxial-type light path difference, white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement that multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement send are all with the tested textile raw material 1 of the direct oblique illumination of low-angle, transmission and reflection from tested textile raw material 1 respectively again, the detection light path 4 of formation small angle inclination.
In apparatus of the present invention, tested textile raw material 1 is the textile raw material thin layer of thickness less than the high-speed motion of 8mm, and its width is by the resolution decision of color camera or color infrared camera 7.If when the resolution of color camera or color infrared camera 7 was 2048 pixels, the width of textile raw material was 400mm; When resolution was 4096 pixels, the width of textile raw material was 800mm.
In apparatus of the present invention, the multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode is the identical light sources of structure with the multispectral polarizing light source 3 of reflection ultraviolet enhancement, just the installation site difference.Reflection ultraviolet enhancement multispectral polarizing light source 3 is installed in the homonymy of tested textile raw material 1 with color camera or color infrared camera 7; The multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode then is installed in the opposite side of tested textile raw material 1.As shown in Figure 3, the structure of multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement comprises heat dissipation base 12, multispectral light emitting diode matrix 19, cylindrical lens 15, polaroid 16 and housing 18.Above-mentioned multispectral light emitting diode matrix 19, as shown in Figure 4, by white light emitting diode 13 and multispectral auxiliary light emission diode 14 uniformly-spaced linear array form.Multispectral auxiliary light emission diode 14 can be one or more in colored multispectral light emitting diode, ultraviolet spectrum light emitting diode or the infrared spectrum light emitting diode.White light wave, multispectral light wave or the multispectral light wave of ultraviolet enhancement that multispectral light emitting diode matrix 19 sends in multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement assembled through cylindrical lens 15 respectively and the white polarized light in polaroid 16 polarizations polarization back, multispectral polarized light or the multispectral polarized light 17 of ultraviolet enhancement.Polaroid 16 is visible light polaroid or visible light infrared polarization sheet.When using infrarede emitting diode in the multispectral auxiliary light emission diode 14, polaroid 16 is selected visible light infrared polarization sheet for use, polarized light analyzing device 6 is selected the infrared analyzer of visible light for use, video-unit is selected the color infrared camera for use, purpose is to gather visible light chromatic polarization image and infrared colour polarization image simultaneously, and the visible light that obtains foreign impurity in the textile raw material is to the multispectral chromatic polarization detection method of the fluorescence enhancement mode of infrared band.
In apparatus of the present invention, after detecting light path 4 and be the tested textile raw material 1 of white polarized light, multispectral polarized light or the multispectral polarizing light irradiation of ultraviolet enhancement that multispectral polarizing light source 2 of ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement send, the optical beam path that transmitted light that obtains and reflected light form.Optical wave plate 5, polarized light analyzing device 6 and color camera or color infrared camera 7 are installed on the above-mentioned detection light path 4 from left to right successively.Optical wave plate 5 is quarter wave plate or 1/2 wave plate, be used for compensating interference phase difference from the multispectral polarized light of fluorescence enhancement mode of tested textile raw material 1 outgoing, purpose is the interference light intensity of colour developing light wave during the chromatic polarization of enhancing foreign impurity is interfered, and then improves the discrimination of foreign impurity in the textile raw material.The multispectral polarized light of fluorescence enhancement mode through phase compensation of 6 pairs of incidents of polarized light analyzing device carries out the polarization polarization.Wherein, because polarization state remains unchanged substantially, polarized light analyzing device will stop that this multispectral polarized light enters color camera or color infrared camera 7 from the multispectral polarized light of textile raw material outgoing; And foreign impurity is because significant optics anisotropic becomes the multispectral elliptically polarized light of fluorescence enhancement mode with the multispectral polarized light of fluorescence enhancement mode of incident, to interfere mutually after the polarization polarization through polarized light analyzing device 5 and develop the color, form multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode, gather above-mentioned image by color camera or color infrared camera 7 at last.
In apparatus of the present invention, color camera or color infrared camera 7 are multi-color cord array camera or the multi-thread array camera of color infrared, are used to gather white polarized light chromatic polarization image, multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode that forms after the polarization of polarized light analyzing device 6 polarizations.
In apparatus of the present invention, image dissector 9 is that the video signal 8 to 7 outputs of color camera or color infrared camera carries out graphical analysis, produces spectrum light intensity control signal.As shown in Figure 5, this image dissector 9 comprises pretreater (adopting chip EP2SGX60CF780C5N), core processor 1 (adopting chip TMS320C6474), core processor 2 (adopting chip TMS320C6474), memory module 1 (adopting two DDR2 memory chip MT47H64M16HR-3:E), memory module 2 (adopting two DDR2 memory chip MT47H64M16HR-3:E), memory module 3 (adopts four DDR2 memory chip MT47H32M16HR-3:B, a slice flash memory chip S29GL512N11FFIV1, two SRAM memory chip K1B3216B2E-BI70), spectrum light intensity control logic module is (by programmable logic chip EPM2210GF256C3N, opto-coupler chip PS2501, voltage amplification chip MC1413 and light-emitting diodes pipe driving chip LT3474EFE-1 form).The principle of work of above-mentioned image dissector 9 is: at first with pretreater the video signal 8 of color camera or color infrared camera 7 outputs is carried out the data-switching in RGB color space and gradation of image space, and the data after will changing by quick IO interface (SRIO) are passed to core processor 1 and core processor 2 respectively.Secondly, in pretreater,, obtain the kind of foreign impurity with the form of foreign impurity in the white of the edge extracting Algorithm Analysis in the morphology disposal route polarized light chromatic polarization image; In core processor 1, analyze the color of foreign impurity in the white polarized light chromatic polarization image, obtain the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity with RGB color space disposal route; In core processor 2,, obtain the thickness intensity signal of diverse location with the thickness degree of textile raw material diverse location in the gradation of image spatial manipulation methods analyst white polarized light chromatic polarization image; Once more, by quick IO interface (SRIO) above-mentioned colour developing spectrum and thickness intensity signal that core processor 1 and core processor 2 obtain are passed to pretreater, pretreater will obtain kind, colour developing spectrum and the thickness intensity signal of foreign impurity and pass to spectrum light intensity control logic module after comprehensive; At last, produce spectrum light intensity control signal, the spectrum and the light intensity of multispectral polarizing light source 2 of control ultraviolet transmissive enhancement mode and the multispectral polarizing light source 3 of reflection ultraviolet enhancement by spectrum light intensity control logic module.
In apparatus of the present invention, Amici prism 11 is common Amici prisms, also can use energy Amici prism or polarization splitting prism.The effect of Amici prism 11 is that the optical path direction of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement that reflection ultraviolet enhancement multispectral polarizing light source 3 is sent changes the tested textile raw material of 90 degree back vertical incidence.
Claims (8)
1. the multispectral chromatic polarization detection method of foreign impurity in the textile raw material is characterized in that this method may further comprise the steps:
(1) contain the tested textile raw material of foreign impurity with the white polarizing light irradiation in the multispectral polarizing light source of ultraviolet enhancement, after this white polarized light changes polarization state through foreign impurity in the tested textile raw material, outgoing from tested textile raw material;
(2) to above-mentioned from tested textile raw material the white polarized light of outgoing carry out the polarization of phase compensation and polarization, obtain the chromatic polarization of the white polarized light of foreign impurity in the textile raw material;
(3) gather the chromatic polarization image of above-mentioned white polarized light with video-unit, this image analysis is obtained the kind of foreign impurity with the morphology disposal route; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal; According to the kind of foreign impurity in the above-mentioned tested textile raw material, when foreign impurity did not have fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained multispectral polarized light; When foreign impurity had fluorescent effect, spectrum and light intensity with above-mentioned spectrum light intensity control signal is regulated the multispectral polarizing light source of ultraviolet enhancement obtained the multispectral polarized light of ultraviolet enhancement;
(4) making above-mentioned multispectral polarized light that obtains or the multispectral polarizing light irradiation of ultraviolet enhancement to the tested textile raw material that contains foreign impurity, is multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode that polarization state changes through the polarized light of textile raw material outgoing;
(5) multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode to outgoing in the step (4) carries out phase compensation and polarization polarization, obtains the multispectral chromatic polarization or the multispectral chromatic polarization of fluorescence enhancement mode of foreign impurity in the tested textile raw material;
(6) utilize described video-unit to gather above-mentioned multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode, from this image, discern foreign impurity.
2. the multispectral chromatic polarization pick-up unit of foreign impurity in the textile raw material is characterized in that this device comprises:
The multispectral polarizing light source of ultraviolet transmissive enhancement mode, place a side of tested textile raw material, at first be used to produce white polarized light, spectrum light intensity control signal according to image dissector produces multispectral polarized light or the multispectral polarized light of ultraviolet enhancement then, the light vertical irradiation that the multispectral polarizing light source of ultraviolet transmissive enhancement mode sends contains the tested textile raw material of foreign impurity, after foreign impurity changes polarization state in textile raw material, transmission from textile raw material;
The multispectral polarizing light source of reflection ultraviolet enhancement, place the opposite side of tested textile raw material, at first be used to produce white polarized light, spectrum light intensity control signal according to image dissector produces multispectral polarized light or the multispectral polarized light of ultraviolet enhancement then, the light vertical irradiation that the multispectral polarizing light source of reflection ultraviolet enhancement sends contains the tested textile raw material of foreign impurity, after foreign impurity changes polarization state in textile raw material, from textile raw material, reflect;
An Amici prism is used to make the optical path direction of white polarized light, multispectral polarized light or the multispectral polarized light of ultraviolet enhancement that the multispectral polarizing light source of above-mentioned reflection ultraviolet enhancement sends to change the tested textile raw material of 90 degree back vertical incidence; The multispectral polarized light of white polarized light, multispectral polarized light or ultraviolet enhancement after transmission and the polarization state that reflects change from above-mentioned tested textile raw material forms and detects light path;
An optical wave plate, a polarized light analyzing device and a video-unit, the three is installed on the above-mentioned detection light path from left to right successively, and described optical wave plate is used for compensating from the white polarized light of tested textile raw material outgoing and the interference phase difference of multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode; Described polarized light analyzing device is used for carrying out the polarization polarization to above-mentioned through two kinds of polarized lights after the phase compensation; Described video-unit is used to gather white polarized light chromatic polarization image, multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode that forms after above-mentioned polarized light analyzing device polarization polarization;
An image dissector is used for the chromatic polarization image of the above-mentioned white polarized light of video-unit collection is analyzed; With the morphology disposal route this image is analyzed, obtained the kind of foreign impurity; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal.
3. the multispectral chromatic polarization pick-up unit of foreign impurity in the textile raw material is characterized in that this device comprises:
The multispectral polarizing light source of ultraviolet transmissive enhancement mode, place a side of tested textile raw material, at first be used to produce white polarized light, spectrum light intensity control signal according to image dissector produces multispectral polarized light or the multispectral polarized light of ultraviolet enhancement then, the light that the multispectral polarizing light source of ultraviolet transmissive enhancement mode sends contains the tested textile raw material of foreign impurity with the small angle inclination irradiation, after foreign impurity changes polarization state in textile raw material, transmission from textile raw material;
The multispectral polarizing light source of reflection ultraviolet enhancement, place the opposite side of tested textile raw material, at first be used to produce white polarized light, spectrum light intensity control signal according to image dissector produces multispectral polarized light or the multispectral polarized light of ultraviolet enhancement then, the light that the multispectral polarizing light source of reflection ultraviolet enhancement sends contains the tested textile raw material of foreign impurity with the small angle inclination irradiation, after foreign impurity changes polarization state in textile raw material, from textile raw material, reflect; The reflected light of the transmitted light of transmission and above-mentioned tested textile raw material reflection merges formation detection light path from above-mentioned tested textile raw material;
An optical wave plate, a polarized light analyzing device and a video-unit, the three is installed on the above-mentioned detection light path from left to right successively; Described optical wave plate is used for compensating from the white polarized light of tested textile raw material outgoing and the interference phase difference of multispectral polarized light or the multispectral polarized light of fluorescence enhancement mode; Described polarized light analyzing device is used for carrying out the polarization polarization to above-mentioned through two kinds of polarized lights after the phase compensation; Described video-unit is used to gather white polarized light chromatic polarization image, multispectral chromatic polarization image or the multispectral chromatic polarization image of fluorescence enhancement mode that forms after above-mentioned polarized light analyzing device polarization polarization;
An image dissector is used for the chromatic polarization image of the above-mentioned white polarized light of video-unit collection is analyzed, and with the morphology disposal route this image is analyzed, and obtains the kind of foreign impurity; With RGB color space disposal route this image is analyzed, obtained the colour developing spectrum of the white polarized light chromatic polarization of foreign impurity; With gradation of image spatial manipulation method this image is analyzed, obtained the thickness intensity signal of tested textile raw material; According to the colour developing spectrum of the white polarized light chromatic polarization of the kind of the above-mentioned foreign impurity that obtains, foreign impurity and the thickness intensity signal of tested textile raw material, produce spectrum light intensity control signal.
4. as claim 2 or 3 described devices, it is characterized in that multispectral polarizing light source of wherein said ultraviolet transmissive enhancement mode or the multispectral polarizing light source of reflection ultraviolet enhancement comprise: heat dissipation base, by a plurality of white light emitting diodes and linear at interval linear diode array, cylindrical lens and the polaroid that rearranges of a plurality of multispectral auxiliary light emission diodes; Described heat dissipation base is fixed in the rear portion in the housing; Described linear diode array is fixed on the interior heat dissipation base of housing; Described cylindrical lens places the place ahead of linear diode array; Described polaroid places housing foremost.
5. as claim 2 or 3 described devices, it is characterized in that wherein said video-unit is color camera or color infrared camera.
6. as claim 2 or 3 described devices, it is characterized in that wherein said polarized light analyzing device is visible light polarized light analyzing device or visible light infrared polarization light analyzer.
7. device as claimed in claim 4, it is characterized in that wherein said multispectral auxiliary light emission diode be in colored multispectral light emitting diode, ultraviolet spectrum light emitting diode or the infrared spectrum light emitting diode any one or multiple.
8. device as claimed in claim 4 is characterized in that wherein said polaroid is visible light polaroid or visible light infrared polarization sheet.
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