CN203630036U - Cotton colourimetry device adopting optical spectroscopy - Google Patents
Cotton colourimetry device adopting optical spectroscopy Download PDFInfo
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- CN203630036U CN203630036U CN201320793924.2U CN201320793924U CN203630036U CN 203630036 U CN203630036 U CN 203630036U CN 201320793924 U CN201320793924 U CN 201320793924U CN 203630036 U CN203630036 U CN 203630036U
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a cotton colourimetry device adopting optical spectroscopy, aiming at providing a device which can be used for measuring the reflectivity of all wave lengths of cotton within the range of visible light so as to accurately calculate the color of the cotton, and has the characteristics of being simple in structure and convenient to use. The utility model has the technical scheme that the cotton colourimetry device adopting optical spectroscopy is characterized by comprising a sample measuring hole used for locating a cotton sample, a plurality of light sources used for irradiating the cotton sample, and a spectrograph used for receiving the light ray reflected by the cotton sample; the plurality of light sources are arranged by taking the center normal of the sample measuring hole as a symmetrical center line, so that the cotton sample can be evenly irradiated at multiple angles; the axis of a light receiving end of the spectrograph is coincided with the symmetrical center line.
Description
Technical field
The utility model relates to a kind of color measuring device for cotton, specifically a kind of optical spectroscopy color measuring device for cotton.
Background technology
Cotton color is an important indicator about cotton quality, has special instrument " cotton colorimeter " to measure it both at home and abroad.Current measuring method is such: with several standard sourcess irradiation cottons, irradiate and become about 45° angle with the normal of cotton face, then measure in the centre normal of face with the position of the face of measurement certain distance on place two photoelectric sensors, the spectrum sensitivity of these two photoelectric sensors is corrected into the X in standard colorimetric observer's spectral tristimulus value curve, the curve of spectrum of two valuess of Y.What proofread and correct employing is compound glass color filter, and electrooptical device great majority adopt silicon photocells, also have a small amount of employing selenium cell.Two photoelectric sensors are measured two value: Y in spectral tristimulus value, Z, then by calculating reflectivity and two indexs of the yellow degree of depth of cotton, this is so-called photoelectric integral method namely.Computing formula is as follows:
Reflectivity Rd=Y;
The yellow degree of depth+b=70f
y(Y-0.847Z);
Wherein f
y=0.51 (21+20Y)/(1+20Y);
The rank of cotton color is exactly by reflectivity (Rd) and (+b) these two indexs decisions of the yellow degree of depth.Due to the number of plies of color filter limited (being no more than 20), and the spectrum of color filter own is through the very difficult control of curve, is therefore difficult to accurately proofread and correct photronic sensitivity, finally causes the precision of test not high, and colour examining effect is unsatisfactory.The cotton color rank erroneous judgement causing because of colour examining error in use procedure is more common.
Utility model content
The purpose of this utility model is the deficiency that overcomes above-mentioned background technology, a kind of optical spectroscopy color measuring device for cotton is provided, this device can be measured the reflectivity of cotton each wavelength in visible-range, thereby accurately calculates the color of cotton, and has feature simple in structure and easy to use.
The technical scheme that the utility model provides is: a kind of color measuring device for cotton of optical spectroscopy, is characterized in that this device comprises that test sample mouth, multiple light sources that cotton sample is irradiated and the reception cotton sample of location cotton sample penetrate the spectrometer of light; Described multiple light sources arrange to realize the multi-angle uniform irradiation to cotton sample taking the centre normal of test sample mouth as symmetrical center line; The light receiving end axis of described spectrometer overlaps with described symmetrical center line.
Described multiple light sources and spectrometer are installed in a closed box; Described test sample mouth is positioned at the top of this casing, is formed by the through hole of a transparent glass isolation.
Described symmetrical center line overlaps with the centre normal of described transparent glass.
Principle of work of the present utility model is: use spectrum light source relatively uniformly, from multiple angles, cotton is carried out to uniform irradiation, then use its catoptrical spectrum of spectrometer measurement, calculate the reflectance spectrum curve in detected object visible-range by catoptrical spectrometer, can accurately calculate the tristimulus values X of this tested object under any light source according to reflectance spectrum curve again, Y, Z(is red, green, orchid), analyze its shades of colour index with this.
The beneficial effects of the utility model are: because the spectrum of radiation source is relatively even, X, Y, Z tristimulus values are complete complete; So calculate after the reflectance spectrum curve in detected object visible-range by the catoptrical curve of spectrum, can accurately calculate the tristimulus values X of tested object under any standard sources is irradiated according to this reflectance spectrum curve again, Y, Z, is just easy to calculate shades of colour index; And then increased substantially cotton measuring accuracy, efficiently solve the defect that existing cotton colorimeter causes cotton color grade to be judged by accident because of colour examining error; In addition, the utility model is simple in structure, manufactures and uses all simple and convenient.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram of the utility model embodiment.
Embodiment
Further illustrate below in conjunction with embodiment shown in the drawings.
In device shown in Fig. 1, multiple light sources 4 and spectrometer 5 are all installed in a closed box 6; A through hole is offered on the top of this this casing, and (glass window is changeable, determines as required by a transparent glass isolation sealing; Conventionally get now 10 centimeter square), form described test sample mouth 3.When test, sample cotton 2 is placed on transparent glass, is imposed certain pressure position above sample by briquetting 1.
In casing, several light sources are evenly arranged (conventionally can and be uniformly distributed around the centre normal symmetry of transparent glass); Light source can not be standard sources (conventional lighting device; As incandescent lamp, iodine-tungsten lamp and LED etc.), but spectral distribution is roughly even.Under transparent glass, (being the centre normal direction of transparent glass) installs a spectrometer 5, and light receiving end axis 5-1 should overlap substantially with the centre normal of transparent glass; Gather the reflectance spectrum of sample cotton.
The above all parts all can be made by oneself or directly outsourcing acquisition.
The utility model can calculate the reflectance spectrum curve in detected object visible-range by the catoptrical curve of spectrum, can accurately calculate the tristimulus values X of tested object under any standard sources is irradiated, Y, Z according to this reflectance spectrum curve; Had tristimulus values, be just easy to accurately calculate reflectivity (Rd) and the yellow degree of depth (+b) these two indexs:
Reflectivity Rd=Y;
The yellow degree of depth+b=70f
y(Y-0.847Z);
Wherein f
y=0.51 (21+20Y)/(1+20Y);
Thereby by these two indexs, cotton is carried out to color grading.
Claims (3)
1. a color measuring device for cotton for optical spectroscopy, is characterized in that this device comprises the test sample mouth (3) of location cotton sample (2), multiple light sources (4) that cotton sample is irradiated and receives the spectrometer (5) of cotton sample emission of light; Described multiple light sources arrange to realize the multi-angle uniform irradiation to cotton sample taking the centre normal of test sample mouth as symmetrical center line; The light receiving end axis (5-1) of described spectrometer overlaps with described symmetrical center line.
2. the color measuring device for cotton of a kind of optical spectroscopy according to claim 1, is characterized in that: described multiple light sources and spectrometer are installed in a closed box (6); Described test sample mouth is positioned at the top of this casing, is formed by the through hole of a transparent glass isolation.
3. the color measuring device for cotton of a kind of optical spectroscopy according to claim 2, is characterized in that: described symmetrical center line overlaps with the centre normal of described transparent glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793924.2U CN203630036U (en) | 2013-12-04 | 2013-12-04 | Cotton colourimetry device adopting optical spectroscopy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793924.2U CN203630036U (en) | 2013-12-04 | 2013-12-04 | Cotton colourimetry device adopting optical spectroscopy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630036U true CN203630036U (en) | 2014-06-04 |
Family
ID=50816502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320793924.2U Expired - Fee Related CN203630036U (en) | 2013-12-04 | 2013-12-04 | Cotton colourimetry device adopting optical spectroscopy |
Country Status (1)
| Country | Link |
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| CN (1) | CN203630036U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389150A (en) * | 2014-11-17 | 2015-03-04 | 苏州市光华电测技术研究所 | Comparison device for inspecting rolling quality and colors of cotton |
| CN107101955A (en) * | 2017-01-11 | 2017-08-29 | 中国计量科学研究院 | A kind of LED cottons chromatic measuring system and a kind of LED cottons method for measuring color |
| CN107192456A (en) * | 2017-06-22 | 2017-09-22 | 温州大学 | A kind of color measuring multi-optical spectrum imaging system based on LED illumination |
| CN110108659A (en) * | 2019-05-28 | 2019-08-09 | 杭州电子科技大学 | One kind being based on near-infrared reflection formula soil humidity measuring device and its detection method |
| CN112345471A (en) * | 2020-11-10 | 2021-02-09 | 深圳拓匠印前科技有限公司 | Hand-held intelligent color measuring instrument |
-
2013
- 2013-12-04 CN CN201320793924.2U patent/CN203630036U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389150A (en) * | 2014-11-17 | 2015-03-04 | 苏州市光华电测技术研究所 | Comparison device for inspecting rolling quality and colors of cotton |
| CN104389150B (en) * | 2014-11-17 | 2016-05-25 | 苏州市光华电测技术研究所 | A kind of comparison device of checking cotton Ginning Quality and color |
| CN107101955A (en) * | 2017-01-11 | 2017-08-29 | 中国计量科学研究院 | A kind of LED cottons chromatic measuring system and a kind of LED cottons method for measuring color |
| CN107192456A (en) * | 2017-06-22 | 2017-09-22 | 温州大学 | A kind of color measuring multi-optical spectrum imaging system based on LED illumination |
| CN107192456B (en) * | 2017-06-22 | 2018-07-10 | 温州大学 | A kind of color measuring multi-optical spectrum imaging system based on LED illumination |
| CN110108659A (en) * | 2019-05-28 | 2019-08-09 | 杭州电子科技大学 | One kind being based on near-infrared reflection formula soil humidity measuring device and its detection method |
| CN112345471A (en) * | 2020-11-10 | 2021-02-09 | 深圳拓匠印前科技有限公司 | Hand-held intelligent color measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20161204 |