CN110907037A - Fabric color online detection system and detection method based on photoelectric integration method - Google Patents
Fabric color online detection system and detection method based on photoelectric integration method Download PDFInfo
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- CN110907037A CN110907037A CN201911236225.6A CN201911236225A CN110907037A CN 110907037 A CN110907037 A CN 110907037A CN 201911236225 A CN201911236225 A CN 201911236225A CN 110907037 A CN110907037 A CN 110907037A
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- 239000004744 fabric Substances 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000010354 integration Effects 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000004075 alteration Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000004753 textile Substances 0.000 description 5
- 238000004043 dyeing Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/465—Measurement of colour; Colour measuring devices, e.g. colorimeters taking into account the colour perception of the eye; using tristimulus detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J2003/467—Colour computing
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Abstract
The invention discloses a fabric color online detection system based on a photoelectric integration method, which comprises 4 guide rollers which are arranged in a black box in sequence along the advancing direction of a detected fabric, wherein a pair of guide rollers positioned at the upper part are positioned on the same horizontal plane, a pair of guide rollers positioned at the lower part are also positioned on the same horizontal plane, an upper pair of guide rollers and a lower pair of guide rollers are mutually parallel, a D50 annular light source is also arranged above the middle position between the pair of guide rollers positioned at the upper part, a telecentric lens and an XYZ tristimulus value sensor are sequentially arranged above the D50 annular light source, the XYZ tristimulus value sensor is connected with an embedded controller, and the embedded controller is also in communication connection with an industrial personal computer positioned outside the black box through a CAN bus. The invention also discloses a detection method of the on-line detection system for the fabric color based on the photoelectric integration method. The invention solves the problems of large error of manual detection, more limitation of equipment detection objects, low efficiency and high price in the prior art.
Description
Technical Field
The invention belongs to the technical field of color detection, particularly relates to an on-line fabric color detection system based on a photoelectric integration method, and further relates to a detection method of the on-line fabric color detection system based on the photoelectric integration method.
Background
In the field of textile printing and dyeing, color is an important index for controlling the quality of finished products by enterprises, and the technology for preventing and controlling chromatic aberration is a difficult point and a key point, at present, many printing and dyeing enterprises adopt an off-line mode for chromatic aberration control and manually match colors, and the mode has many defects: the manual visual inspection mode not only consumes labor, but also cannot accurately judge the chromatic aberration through visual inspection, so that misjudgment often occurs, and production problems cannot be timely found through off-line detection, so that a large amount of resources are wasted.
With the improvement of the market on the quality requirement of textiles and the development of high and new technologies, the traditional manual method is gradually replaced by the instrument color measurement. At present, a spectrophotometer is the most commonly used device for measuring and controlling the color of textiles. This color measurement method has high accuracy, but has disadvantages such as many limitations on measurement objects, low efficiency, and high price.
Therefore, an efficient and accurate online color difference measurement mode is a technical problem which needs to be solved urgently in the dyeing and finishing industry of China.
Disclosure of Invention
The invention aims to provide an on-line detection system for fabric color based on a photoelectric integration method, which solves the problems of large manual detection error, more limitation on equipment detection objects, low efficiency and high price in the prior art.
The invention also aims to provide a detection method of the online fabric color detection system based on the photoelectric integration method.
The invention adopts a first technical scheme that the on-line detection system for the fabric color based on the photoelectric integration method comprises 4 guide rollers which are arranged in a black box in sequence along the advancing direction of a detected fabric, a pair of guide rollers positioned at the upper part are positioned on the same horizontal plane, a pair of guide rollers positioned at the lower part are also positioned on the same horizontal plane, an upper pair of guide rollers and a lower pair of guide rollers are parallel to each other, a D50 annular light source is also arranged above the middle position between the pair of guide rollers positioned at the upper part, a telecentric lens and an XYZ tristimulus value sensor are sequentially arranged above the D50 annular light source, the XYZ tristimulus value sensor is connected with an embedded controller, and the embedded controller is also in communication connection with an industrial personal computer positioned outside the black box through a.
The first technical aspect of the present invention is also characterized in that,
the XYZ tristimulus value sensor is a 16-bit XYZ tristimulus color sensor AS73211 of an EMIES semiconductor AMS, and the telecentric lens is a large constant photoelectric GCO-2302+ GCO-2306 type lens.
The invention adopts the second technical scheme that after being guided by a guide roller along the advancing direction, when passing below a D50 annular light source, light rays emitted by a D50 annular light source are subjected to diffuse reflection on the surface of a detected fabric, the reflected light reaches an XYZ tristimulus value sensor after passing through a telecentric lens, and an embedded controller takes XYZ tristimulus values out of the XYZ tristimulus value sensor and combines the XYZ tristimulus values with a reference XYZ tristimulus value of the D50 annular light source to be converted into L through calculation*a*b*In the color space, the embedded controller transmits the final result to the industrial personal computer through CAN bus communication, and the industrial personal computer real-timely transmits the final detection result and the L of the standard color of the fabric variety*a*b*Value comparison, calculating color difference delta E* abAnd will be Δ E in real time* abAnd drawing a curve with the time t, so as to reflect the color fluctuation condition of the fabric variety in the production process, and timely adjusting production equipment according to the result.
The second technical aspect of the present invention is also characterized in that,
XYZ tristimulus values to L*a*b*The conversion process of the color space data is specifically as follows:
L*a*b*lightness L in color space*And chromaticity coordinate a*、b*The calculation formula of (2) is as follows:
in the formula: x0，Y0，Z0The tristimulus values of a standard light source impinging on a fully diffuse reflective surface,the three stimulations of the D50 standard light source under the field of view of 10 degrees are obtained by inquiring the 'scattered three stimulations value of the common standard light source': x0＝96.72，Y0＝100，Z081.43, the XYZ tristimulus value to L is obtained after the substitution*a*b*Color space data conversion results.
The measurement precision of the XYZ tri-stimulus value sensor is
Namely, it is
Obtaining an equation (2) by fully differentiating the equation set (1)
Substituting dX, dY, dZ into equation (2) to obtain L*a*b*The precision expression of (2) is shown as formula (3):
substituting the formula (3) into a chromatic aberration calculation formula (4) to obtain a chromatic aberration precision expression:
as can be seen from equation (3), when X, Y, Z is close to X0、Y0、Z0When is Δ L*＝5.9/100＝0.059，Δa*≈0.0000085，Δb*About-0.0000228 with equation (4)
Namely, the system color difference precision is 0.059.
The invention has the beneficial effects that the 16-bit novel XYZ tri-stimulus is selected by the on-line detection system of the fabric color based on the photoelectric integration methodThe color sensor is matched with a telecentric lens and a D50 standard illuminator, XYZ tristimulus values are read and calibrated under a standard color chart, the target fabric is measured on line after calibration, the XYZ tristimulus values are obtained through measurement, and the XYZ tristimulus values are converted into CIE recommended L mainly used for the textile printing and dyeing and other surface color material industries*a*b*And finally, uploading the data to a computer for analysis and processing in the color space. The invention can realize the rapid, accurate and objective online uninterrupted detection of the fabric color, discover the color change of the fabric in time, detect efficiently and provide basic data for the color management of textiles.
Drawings
FIG. 1 is a schematic structural diagram of a fabric color online detection system based on a photoelectric integration method.
In the figure, an XYZ tri-stimulus value sensor, 2 a telecentric lens, 3D 50 annular light source, 4 tested fabric, 5 a guide roller, 6 a black box, 7 an embedded controller and 8 an industrial personal computer.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a fabric color online detection system based on a photoelectric integration method, which has a structure shown in figure 1 and comprises 4 guide rollers 5 which are arranged in a black box 6 in sequence along the advancing direction of a detected fabric 4, wherein a pair of guide rollers 5 positioned at the upper part are positioned on the same horizontal plane, a pair of guide rollers 5 positioned at the lower part are also positioned on the same horizontal plane, an upper pair of guide rollers 5 and a lower pair of guide rollers 5 are parallel to each other, a D50 annular light source 3 is also arranged above the middle position between the pair of guide rollers 5 positioned at the upper part, a telecentric lens 2 and an XYZ tristimulus value sensor 1 are sequentially arranged above the D50 annular light source 3, the XYZ tristimulus value sensor 1 is connected with an embedded controller 7, and the embedded controller 7 is also in communication connection with an industrial personal computer 8.
The XYZ tristimulus value sensor 1 is a 16-bit XYZ tristimulus color sensor AS73211 of an EMIES semiconductor AMS, and the telecentric lens 2 is a large constant photoelectric GCO-2302+ GCO-2306 type lens.
Online detection of fabric color based on photoelectric integration methodThe detection method of the measuring system comprises the steps that after a measured fabric 4 is guided by a guide roller 5 along the advancing direction, when the measured fabric passes below a D50 annular light source 3, light rays emitted by the D50 annular light source 3 are subjected to diffuse reflection on the surface of the measured fabric 4, the reflected light reaches an XYZ tri-stimulus value sensor 1 after passing through a telecentric lens 2, an embedded controller 7 takes the XYZ tri-stimulus value out of the XYZ tri-stimulus value sensor 1 and combines the XYZ tri-stimulus value with a reference XYZ tri-stimulus value of the D50 annular light source 3, and the XYZ tri-stimulus value is converted into L through operation*a*b*In the color space, the embedded controller 7 transmits the final result to the industrial personal computer 8 through CAN bus communication, and the industrial personal computer 8 transmits the final detection result and the L of the standard color of the fabric variety in real time*a*b*Value comparison, calculating color difference delta E* abAnd will be Δ E in real time* abAnd drawing a curve with the time t, so as to reflect the color fluctuation condition of the fabric variety in the production process, and timely adjusting production equipment according to the result.
Wherein XYZ tristimulus values to L*a*b*The conversion process of the color space data is specifically as follows:
L*a*b*lightness L in color space*And chromaticity coordinate a*、b*The calculation formula of (2) is as follows:
in the formula: x0，Y0，Z0For the tristimulus values of the standard light source irradiating the complete diffuse reflection surface, the tristimulus values of the D50 standard light source under the field of view of 10 degrees are obtained by inquiring the scattered tristimulus values of the common standard light source as shown in the table 1: x0＝96.72，Y0＝100，Z081.43, the XYZ tristimulus value to L is obtained after the substitution*a*b*Color space data conversion results.
TABLE 1 Tri-stimulus values of commonly used standard light sources
Wherein, the measurement precision of the XYZ tri-stimulus value sensor (1) is
Namely, it is
Obtaining an equation (2) by fully differentiating the equation set (1)
Substituting dX, dY, dZ into equation (2) to obtain L*a*b*The precision expression of (2) is shown as formula (3):
substituting the formula (3) into a chromatic aberration calculation formula (4) to obtain a chromatic aberration precision expression:
as can be seen from equation (3), when X, Y, Z is close to X0、Y0、Z0When is Δ L*＝5.9/100＝0.059，Δa*≈0.0000085，Δb*About-0.0000228 with equation (4)
Namely, the system color difference precision is 0.059.
Since XYZ is close to the light source, X/X0、Y/Y0、Z/Z0The ratio of (A) is closest to 1, and the XYZ of the other colors may only be smaller than the X0Y0Z0 of the light source, i.e. X/X0,Y/Y0,Z/Z0Is always less than 1, is substituted into the Δ L calculated by equation (3)*Δa*Δb*All to meet ratioThe calculated value is small according to XYZ of the white light, so that the white light chromatic aberration is the maximum error, and the maximum position of the system chromatic aberration precision is 0.059.
Claims (6)
1. The on-line detection system for the fabric color based on the photoelectric integration method is characterized by comprising 4 guide rollers (5) which are arranged in a black box (6) in sequence along the advancing direction of a detected fabric (4), wherein a pair of guide rollers (5) positioned at the upper part are positioned on the same horizontal plane, a pair of guide rollers (5) positioned at the lower part are also positioned on the same horizontal plane, an upper pair of guide rollers and a lower pair of guide rollers (5) are parallel to each other, a D50 annular light source (3) is also arranged above the middle position between the pair of guide rollers (5) positioned at the upper part, a telecentric lens (2) and an XYZ tri-stimulus value sensor (1) are sequentially arranged above the D50 annular light source (3), the XYZ tri-stimulus value sensor (1) is connected with an embedded controller (7), and the embedded controller (7) is further in communication connection with an industrial personal computer (8) positioned outside the black box (.
2. The on-line fabric color detection system based on the photoelectric integration method AS claimed in claim 1, wherein the XYZ tristimulus value sensor (1) is a 16-bit XYZ tristimulus color sensor AS73211 of an EMIS semiconductor AMS, and the telecentric lens (2) is a large constant photoelectric GCO-2302+ GCO-2306 type lens.
3. A method for detecting a fabric color online detection system based on photoelectric integration method according to claim 2, characterized in that after a detected fabric (4) is guided by a guide roller (5) along the advancing direction, when the detected fabric passes under a D50 annular light source (3), light emitted by the D50 annular light source (3) is diffused and reflected on the surface of the detected fabric (4), the reflected light passes through a telecentric lens (2) and reaches an XYZ tristimulus value sensor (1), and an embedded controller (7) takes the XYZ tristimulus values from the XYZ tristimulus value sensor (1), combines the XYZ tristimulus values with a reference XYZ tristimulus value of the D50 annular light source (3), and converts the XYZ tristimulus values into L after operation*a*b*In the color space, the embedded controller (7) transmits the final result to the industrial personal computer (8) through CAN bus communication, and the industrial personal computer (8) transmits the final detection result and the L of the standard color of the fabric variety in real time*a*b*Value comparison, calculating color difference delta E* abAnd will be Δ E in real time* abAnd drawing a curve with the time t, so as to reflect the color fluctuation condition of the fabric variety in the production process, and timely adjusting production equipment according to the result.
4. The detection method of the on-line detection system for fabric color based on the photoelectric integration method as claimed in claim 3, wherein the XYZ tristimulus values to L*a*b*The conversion process of the color space data is specifically as follows:
L*a*b*lightness L in color space*And chromaticity coordinate a*、b*The calculation formula of (2) is as follows:
in the formula: x0，Y0，Z0For the tristimulus values of the standard light source irradiating the complete diffuse reflection surface, the tristimulus values of the D50 standard light source under the field of view of 10 degrees are obtained by inquiring the scattered tristimulus values of the common standard light source: x0＝96.72，Y0＝100，Z081.43, the XYZ tristimulus value to L is obtained after the substitution*a*b*Color space data conversion results.
5. The method for detecting the fabric color online detection system based on the photoelectric integration method as claimed in claim 4, wherein the measurement accuracy of the XYZ tri-stimulus value sensor (1) is
Namely, it is
6. The method for detecting the fabric color on-line detection system based on the photoelectric integration method as claimed in claim 5, wherein the equation (2) is obtained by fully differentiating the equation set (1)
Substituting dX, dY, dZ into equation (2) to obtain L*a*b*The precision expression of (2) is shown as formula (3):
substituting the formula (3) into a chromatic aberration calculation formula (4) to obtain a chromatic aberration precision expression:
as can be seen from equation (3), when X, Y, Z is close to X0、Y0、Z0When is Δ L*＝5.9/100＝0.059，Δa*≈0.0000085，Δb*About-0.0000228 with equation (4)
Namely, the system color difference precision is 0.059.
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|---|---|---|---|---|
| US20030058447A1 (en) * | 2001-08-14 | 2003-03-27 | Nireco Corporation | Colorimeter apparatus for color printer ink |
| CN101692008A (en) * | 2009-08-20 | 2010-04-07 | 浙江工业大学 | On-line color photometer facing to dyeing industrial process |
| US20130003063A1 (en) * | 2010-12-10 | 2013-01-03 | Advanced Vision Technology (A.V.T.) Ltd | Conveying apparatus with an imaging backing surface |
| CN206431038U (en) * | 2017-01-10 | 2017-08-22 | 西安工程大学 | Fabric Online color-difference measurement device based on fiber spectrometer |
| CN108221339A (en) * | 2018-03-14 | 2018-06-29 | 嘉兴万源时装有限公司 | A kind of perching machine detecting device of clothes processing |
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2019
- 2019-12-05 CN CN201911236225.6A patent/CN110907037A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030058447A1 (en) * | 2001-08-14 | 2003-03-27 | Nireco Corporation | Colorimeter apparatus for color printer ink |
| CN101692008A (en) * | 2009-08-20 | 2010-04-07 | 浙江工业大学 | On-line color photometer facing to dyeing industrial process |
| US20130003063A1 (en) * | 2010-12-10 | 2013-01-03 | Advanced Vision Technology (A.V.T.) Ltd | Conveying apparatus with an imaging backing surface |
| CN206431038U (en) * | 2017-01-10 | 2017-08-22 | 西安工程大学 | Fabric Online color-difference measurement device based on fiber spectrometer |
| CN108221339A (en) * | 2018-03-14 | 2018-06-29 | 嘉兴万源时装有限公司 | A kind of perching machine detecting device of clothes processing |
Non-Patent Citations (1)
| Title |
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| 刘澎: "胶版印刷机印品质量在线测控技术方法研究", 《博士论文数据库》 * |
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