CN106932099A - A kind of multispectral Online color-difference measurement instrument and its application - Google Patents
A kind of multispectral Online color-difference measurement instrument and its application Download PDFInfo
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- CN106932099A CN106932099A CN201710343225.0A CN201710343225A CN106932099A CN 106932099 A CN106932099 A CN 106932099A CN 201710343225 A CN201710343225 A CN 201710343225A CN 106932099 A CN106932099 A CN 106932099A
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- 238000005259 measurement Methods 0.000 title claims abstract description 39
- 239000000523 sample Substances 0.000 claims abstract description 58
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 230000004075 alteration Effects 0.000 claims description 22
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 244000174681 Michelia champaca Species 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004737 colorimetric analysis Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000009123 feedback regulation Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D25/00—Control of light, e.g. intensity, colour or phase
- G05D25/02—Control of light, e.g. intensity, colour or phase characterised by the use of electric means
-
- 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
- G01J2003/466—Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour
Abstract
The invention belongs to optical detecting instrument field, and disclose a kind of multispectral Online color-difference measurement instrument, including observation ball, shifting axle, spectrometer, data processing module, control module and position detecting device, observation ball includes industrial camera, integrating sphere light source and fibre-optical probe, industrial camera is connected with data processing module, and fibre-optical probe is connected with the spectrometer；Spectrometer has external trigger module and data transmission module, and external trigger module is connected with the control module, and data transmission module is connected with data processing module；Control module connects the position detecting device, is positioned with the positional information and measuring targets that read object under test, then controls spectrometer to measure by external trigger module again.The present invention improves online quality of colour detection efficiency, and percent defective is effectively reduced by automatically controlling for ink usage, and product quality and production efficiency can be greatly improved.
Description
Technical field
The invention belongs to optical detecting instrument field, more particularly, to a kind of multispectral Online color-difference measurement instrument and its
Using.
Background technology
In the industrial production, quality control is highly important link, and quality of colour control is even more the most important thing.Now
The chromatism measurement mode that most enterprises are used is still workman and is sampled the measurement that aberration is carried out using off-line device, offline
Color detection product it is very ripe, but make inefficiency in this way and cannot real-time detection go out misalignment, make
Obtain percent defective to improve, and destruction may be produced to product so that product quality is difficult to effectively improve.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of multispectral Online color-difference measurement instrument
And its application, multispectral Online color-difference measurement instrument direct-on-line real-time detection product aberration, find to stop automatically during substandard product
Line is simultaneously alarmed, to realize the effective control to product quality.
To achieve the above object, it is proposed, according to the invention, there is provided a kind of multispectral Online color-difference measurement instrument, it is characterised in that
Including observation ball, shifting axle, spectrometer, data processing module, control module and position detecting device, wherein,
The observation ball includes industrial camera, integrating sphere light source and fibre-optical probe, and the shell of the industrial camera is arranged on
On the shifting axle, the integrating sphere light source and the fibre-optical probe are installed on the shell of the industrial camera, and institute
It is acute angle to state the axis of fibre-optical probe and angle formed by the axis of the industrial camera camera lens, the industrial camera by serial ports with
Data processing module is connected, and the fibre-optical probe is connected by optical cable with the spectrometer；
The spectrometer has external trigger module and data transmission module, and the external trigger module connects with the control module
Connect, the data transmission module is connected with the data processing module；
The control module connects the position detecting device, to read the positional information and measuring targets of object under test
Positioned, then control spectrometer to measure by external trigger module again.
Preferably, the industrial camera is installed on the shifting axle by link activity.
Preferably, the observation ball is provided with multiple and they are installed on the shifting axle.
Preferably, the quantity of the spectrometer is consistent with the quantity of the industrial camera.
Preferably, the data processing module includes product selecting module, data acquisition module and real-time monitoring module, its
In,
The product selecting module is used to carry out the selection of object under test；
The collection that the data acquisition module is used to carry out chromatism data shows that it includes aberration chart module, color difference number
According to module and parameter setting module, the aberration chart module is used for display chromatic curve in real time and is sat in △ L* △ a* △ b*
Mark on a map middle display △ L* △ a* △ b* color difference components, then the maximum color difference components of the numerical value that will obtain are used as adjustment ink usage
With reference to, wherein △ L* represent luminance deviation, its take on the occasion of when explanation sample it is brighter than standard sample, otherwise it is then darker；△a*
Represent red green axle deviation, its take on the occasion of when explanation sample it is partially redder than standard sample, otherwise it is then partially green；It is inclined that △ b* represent champac axle
Difference, its take on the occasion of when explanation sample it is partially more yellow than standard sample, otherwise it is then partially blue；The chromatism data module is used for color difference number
The query function of data is shown and provided according to table；The parameter setting module is used for the setting of measurement parameter；
The real-time monitoring module is used to showing the monitored picture passed back of observation ball and measures auxiliary positioning a little,
And alarmed by alarm when aberration exceedes threshold value.
According to another aspect of the present invention, the side that multispectral Online color-difference measurement instrument adjusts ink in printing press is additionally provided
Method, it is characterised in that comprise the following steps：
1) shifting axle is installed in the frame of printing machine；
2) observation ball is moved to standard sample top to carry out parameter calibration, to determine standard sample L*a*b* values；
3) observation ball is moved to standard white plate top to carry out white calibration, for determining the L*a*b* of reference white
Value；
4) observation ball is moved to measurement position, starts to measure and open production line；
5) spectrometer reads reflected light wavelength, so as to obtain tristimulus values, and then obtains the L*a*b* values of sample；
6) data processing equipment step 2) Plays sample L*a*b* values, step 3) Plays white L*a*b* values with
Step 5) in the L*a*b* values of sample carry out Colorimetry, obtain the △ L* △ a* △ b* values and aberration of sample
Value, and the △ L* △ a* △ b* values of acquisition, value of chromatism and ink usage now are stored in database in case subsequent treatment and
Analysis；
7) aberration result of calculation is shown in real time；
8) relationship analysis of ink usage and aberration quality is carried out using neutral net, ink usage and aberration quality is obtained
Relational model, feedback regulation is carried out to the ink usage of production line using this model.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show
Beneficial effect：
1) the observation ball of this multispectral Online color-difference measurement instrument be placed in testing sample top product is carried out data acquisition with
And real-time monitoring, the position of testing sample is accurately positioned by position detecting device, treated when position detecting device is navigated to
Test sample product constantly control module by external trigger mode control multispectral instrument carry out data acquisition and send to data processing fill
Put and shown and processed, so as to improve online quality of colour detection efficiency；
2) present invention is controlled so as to difference quality measurement of checking colors forms closed-loop control according to the data for collecting to ink usage,
Rate of effectively reducing the number of rejects and seconds is automatically controlled by ink usage, product quality and production efficiency can be greatly improved.
Brief description of the drawings
Fig. 1 is simplified schematic diagram when multispectral Online color-difference measurement instrument adjusts ink on the printer in the present invention；
Fig. 2 is the structural representation of observation ball in the present invention；
Fig. 3 is the structured flowchart of multispectral Online color-difference measurement instrument in the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method
Not constituting conflict each other can just be mutually combined.
1~Fig. 3 of reference picture, a kind of multispectral Online color-difference measurement instrument, including observation ball 6, shifting axle 5, spectrometer, data
Processing module, control module and position detecting device, wherein,
The observation ball 6 includes industrial camera 61, integrating sphere light source 63 and fibre-optical probe 62, outside the industrial camera 61
Shell is arranged on the shifting axle 5, and the integrating sphere light source 63 and the fibre-optical probe 62 are installed in the industrial camera 61
Shell on, and angle formed by the axis of the axis of the fibre-optical probe 62 and the camera lens of the industrial camera 61 is acute angle, institute
State industrial camera 61 to be connected with data processing module by serial ports, the fibre-optical probe 62 is connected by optical cable with the spectrometer
Connect；
The spectrometer has external trigger module and data transmission module, and the external trigger module connects with the control module
Connect, the data transmission module is connected with the data processing module；
The control module connects the position detecting device, to read the positional information of object under test 3 and to determinand
Body 3 is positioned, and then controls spectrometer to measure by external trigger module again.
Further, the industrial camera 61 is installed on the shifting axle 5 by link activity, and such industrial camera 61 is just
Adjustment position can be carried out along the longitudinal sliding motion of shifting axle 5.
Further, the observation ball 6 is provided with multiple and they are installed on the shifting axle 5, so observes ball 6
Can just be shot in the big visual angle compared.
Further, the quantity of the spectrometer is consistent with the quantity of the industrial camera 61.Each spectrometer correspondence one
Individual industrial camera 61, industrial camera 61 is connected with data processing module, for monitoring the situation of measurement point and carrying out measurement point
Auxiliary positioning, it is to avoid the data of read error；The daylighting of industrial camera 61 is similarly from integrating sphere light source 63.
Further, the data processing module includes product selecting module, data acquisition module and real-time monitoring module, its
In,
The product selecting module is used to carry out the selection of object under test 3；
The collection that the data acquisition module is used to carry out chromatism data shows that it includes aberration chart module, color difference number
According to module and parameter setting module, the aberration chart module is used for display chromatic curve in real time and is sat in △ L* △ a* △ b*
Mark on a map middle display color difference components, then the maximum color difference components of the numerical value that will obtain are used as the reference of adjustment ink usage, wherein △
L* represents luminance deviation, its take on the occasion of when explanation sample it is brighter than standard sample, otherwise it is then darker；It is inclined that △ a* represent red green axle
Difference, its take on the occasion of when explanation sample it is partially redder than standard sample, otherwise it is then partially green；△ b* represent champac axle deviation, its take on the occasion of
When explanation sample it is partially more yellow than standard sample, otherwise it is then partially blue；The chromatism data module is used to show chromatism data table
Show and provide the query function of data；The parameter setting module is used for the setting of measurement parameter；
The real-time monitoring module is used to show that the monitored picture that observation ball 6 is passed back and the auxiliary for measuring a little are determined
Position, and alarmed by alarm when aberration exceedes threshold value.
According to another aspect of the present invention, the side that multispectral Online color-difference measurement instrument adjusts ink in printing press is additionally provided
Method, it is characterised in that comprise the following steps：
1) shifting axle 5 is installed in the frame of printing machine；
2) observation ball 6 is moved to the top of standard sample 2 to carry out parameter calibration, to determine standard sample L*a*b* values；
3) observation ball 6 is moved to the top of standard white plate 4 to carry out white calibration, for determining the L*a* of reference white
B* values；
4) observation ball 6 is moved to measurement position, starts to measure and open production line 1；
5) spectrometer reads reflected light wavelength, so as to obtain tristimulus values, and then obtains the L*a*b* values of sample；
6) data processing equipment step 2) Plays sample L*a*b* values, step 3) Plays white L*a*b* values with
Step 5) in the L*a*b* values of sample carry out Colorimetry, obtain the △ L* △ a* △ b* values and aberration of sample
Value, and the △ L* △ a* △ b* values of acquisition, value of chromatism and ink usage now are stored in database in case subsequent treatment and
Analysis；
7) result of calculation is shown in real time；
8) relationship analysis of ink usage and aberration quality is carried out using neutral net, ink usage and aberration quality is obtained
Relational model, feedback regulation is carried out to the ink usage of production line 1 using this model.
As shown in Fig. 2 being combined into observation ball 6 by integrating sphere light source 63, industrial camera 61 and fibre-optical probe 62.Such as Fig. 1 institutes
Show, observation ball 6 is placed in testing sample top, can be moved on shifting axle 5 to measure diverse location, can on a shifting axle 5
To lay multiple observation balls 6.Standard white plate 4 and sample are used for the parameter calibration of multispectral instrument.
As shown in figure 3, the fibre-optical probe 62 of observation ball 6 is connected with spectrometer, spectrometer and industrial camera 61 pass through serial ports
It is connected with data processing module；The external trigger end of spectrometer is connected with control module, and control module passes through position detecting device pair
Measurement point is positioned, and an external trigger signal control spectrometer collection data are sent when navigating to measurement point.It is of the invention
Position detecting device is preferably mounted to encoder and photoelectric sensor on production line 1.
Data processing module can carry out the selection of product category, and measurement point is carried out in real time by industrial camera 61
Monitoring, carries out data acquisition and is analyzed by spectrometer, and measurement result is shown in real time, and the record of production is stored in into backstage
It is for future reference in database.When aberration goes beyond the scope alarm.
The test side of multispectral instrument is connected with fibre-optical probe 62, is placed in directly over product, is carried out using integrating sphere light source 63
Illumination, to ensure the uniform of illumination, minimum is reduced to by the measurement error that illumination brings.
The external trigger end of multispectral instrument is connected with control module, and control module is using encoder and photoelectric sensor to measurement
Point is positioned, and sending trigger signal makes spectrometer read data.
Each spectrometer one industrial camera 61 of correspondence, industrial camera 61 is connected with computer, for monitoring measurement point
Situation simultaneously carries out the auxiliary positioning of measurement point, it is to avoid the data of read error.The light source of industrial camera 61 equally uses integrating sphere
Light source 63.
The Survey Software of top layer is developed using c++ and qt quick technologies, coordinates Database Systems to carry out production number
According to preservation and analysis work, and to measurement plan as a whole, there is provided the interface of multichannel multimetering.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (6)
1. a kind of multispectral Online color-difference measurement instrument, it is characterised in that including observation ball, shifting axle, spectrometer, data processing mould
Block, control module and position detecting device, wherein,
The observation ball includes industrial camera, integrating sphere light source and fibre-optical probe, and the shell of the industrial camera is arranged on described
On shifting axle, the integrating sphere light source and the fibre-optical probe are installed on the shell of the industrial camera, and the light
The axis of fibre probe is acute angle with angle formed by the axis of the industrial camera camera lens, and the industrial camera passes through serial ports and data
Processing module is connected, and the fibre-optical probe is connected by optical cable with the spectrometer；
The spectrometer has external trigger module and data transmission module, and the external trigger module is connected with the control module,
The data transmission module is connected with the data processing module；
The control module connects the position detecting device, is carried out with the positional information and measuring targets that read object under test
Positioning, then controls spectrometer to measure by external trigger module again.
2. a kind of multispectral Online color-difference measurement instrument according to claim 1, it is characterised in that the industrial camera passes through
Link activity is installed on the shifting axle.
3. a kind of multispectral Online color-difference measurement instrument according to claim 1, it is characterised in that the observation ball is provided with
It is multiple and they be installed on the shifting axle.
4. a kind of multispectral Online color-difference measurement instrument according to claim 3, it is characterised in that the quantity of the spectrometer
Quantity with the industrial camera is consistent.
5. a kind of multispectral Online color-difference measurement instrument according to claim 1, it is characterised in that the data processing module
Including product selecting module, data acquisition module and real-time monitoring module, wherein,
The product selecting module is used to carry out the selection of object under test；
The collection that the data acquisition module is used to carry out chromatism data shows that it includes aberration chart module, chromatism data mould
Block and parameter setting module, the aberration chart module are used for display chromatic curve in real time and in △ L* △ a* △ b* coordinate diagrams
Middle display △ L* △ a* △ b* color difference components, then the maximum color difference components of the numerical value that will obtain are used as the ginseng of adjustment ink usage
Examine, wherein △ L* represent luminance deviation, its take on the occasion of when explanation sample it is brighter than standard sample, otherwise it is then darker；△ a* generations
The red green axle deviation of table, its take on the occasion of when explanation sample it is partially redder than standard sample, otherwise it is then partially green；It is inclined that △ b* represent champac axle
Difference, its take on the occasion of when explanation sample it is partially more yellow than standard sample, otherwise it is then partially blue；The chromatism data module is used for color difference number
The query function of data is shown and provided according to table；The parameter setting module is used for the setting of measurement parameter；
The real-time monitoring module is used to showing the monitored picture passed back of observation ball and measures auxiliary positioning a little, and
Alarmed by alarm when aberration exceedes threshold value.
6. the method that any described multispectral Online color-difference measurement instrument adjusts ink in printing press in Claims 1 to 5, its feature
It is to comprise the following steps：
1) shifting axle is installed in the frame of printing machine；
2) observation ball is moved to standard sample top to carry out parameter calibration, to determine standard sample L*a*b* values；
3) observation ball is moved to standard white plate top to carry out white calibration, for determining the L*a*b* values of reference white；
4) observation ball is moved to measurement position, starts to measure and open production line；
5) spectrometer reads reflected light wavelength, so as to obtain tristimulus values, and then obtains the L*a*b* values of sample；
6) data processing equipment step 2) Plays sample L*a*b* values, step 3) Plays white L*a*b* values and step
5) the L*a*b* values of sample carry out Colorimetry in, obtain the △ L* △ a* △ b* values and value of chromatism of sample, and
The △ L* △ a* △ b* values of acquisition, value of chromatism and ink usage now are stored in database in case subsequent treatment and analysis；
7) aberration result of calculation is shown in real time；
8) relationship analysis of ink usage and aberration quality is carried out using neutral net, the pass of ink usage and aberration quality is obtained
It is model, feedback regulation is carried out to the ink usage of production line using this model.
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| CN201710343225.0A CN106932099B (en) | 2017-05-16 | 2017-05-16 | A kind of multispectral Online color-difference measurement instrument and its application |
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| CN201710343225.0A CN106932099B (en) | 2017-05-16 | 2017-05-16 | A kind of multispectral Online color-difference measurement instrument and its application |
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| CN106932099B CN106932099B (en) | 2019-04-12 |
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Cited By (3)
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|---|---|---|---|---|
| CN113485700A (en) * | 2021-07-07 | 2021-10-08 | 华中科技大学鄂州工业技术研究院 | Qt-based design method and device for opto-electro-mechanical modular control software |
| CN113777056A (en) * | 2021-08-13 | 2021-12-10 | 昆山格博尔智能科技有限责任公司 | Ink color matching detection method based on multispectral CMOS image chip |
| WO2022037062A1 (en) * | 2020-08-17 | 2022-02-24 | 武汉钢铁有限公司 | On-line color difference measurement system and method |
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| US20130293702A1 (en) * | 2010-11-01 | 2013-11-07 | The Hong Kong Research Institute Of Textiles And Apparel Limited | Multispectral imaging color measurement system and method for processing imaging signals thereof |
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| CN106932099B (en) | 2019-04-12 |
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