CN101586984A - Color sensor - Google Patents
Color sensor Download PDFInfo
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- CN101586984A CN101586984A CNA2009100337207A CN200910033720A CN101586984A CN 101586984 A CN101586984 A CN 101586984A CN A2009100337207 A CNA2009100337207 A CN A2009100337207A CN 200910033720 A CN200910033720 A CN 200910033720A CN 101586984 A CN101586984 A CN 101586984A
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Abstract
The invention discloses a kind of color sensor, comprise radiation source, photoelectric sensor, microcontroller, display module, control circuit for light source and communication interface that the different light of at least 2 kinds of colors can be provided respectively with A/D translation function; Described microcontroller is connected with described radiation source by control circuit for light source, described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on the object under test, and described display module is connected with described microcontroller; Described communication interface is connected with described microcontroller.The present invention can detect the color of object under test exactly, can be applied to color measuring and identification in the general industry production; And easy to operate, simple in structure, cost is lower, is suitable for applying.
Description
Technical field
The present invention relates to a kind of color detection device, be specifically related to a kind of color sensor, be applied to color measuring and identification in the general industry production.
Background technology
Along with the development of modern industrialization production to high speed, automation direction, the production run midium or long term will be substituted by corresponding color sensor more and more with the active color identification of cause human eye work.For example: the library uses different colours that document is classified, and can improve work efficiencies such as framed bent management and statistics; At packaging industry, the packing of product utilizes different colors or decoration expression its different character or purposes; In addition, color sensor is in coating, textile and cosmetics manufacturing, and medical aspect also has a wide range of applications.
Existing color sensor is more rare, up to date along with the development of microelectric technique, colored CCD as image sensor application in industrial, civilian and special dimension.Yet owing to colored CCD is not to use as color sensor, the color information that obtain object also will be through complicated signal Processing.The color sensor TCS230 of TAOS (Texas Advanced Optoelectronic Solutions) the up-to-date release of company can realize the identification and the detection of color.TCS230 is integrated in configurable silicon photoelectric diode and current frequency converter on the single cmos circuit, simultaneously integrated three kinds of light filters of RGB (RGB) on one chip; Its output signal is a digital quantity, thereby need not external extra A/D change-over circuit.Yet the limitation of this color sensor that detects based on three primary colours can display in the lower application of light intensity, and the costing an arm and a leg of this color sensor, and is difficult to apply.Another kind of color detection instrument commonly used is the spectrophotometric colorimeter, its ultimate principle is to utilize the light source irradiation testee of different wave length, the luminous flux that passes or reflect from testee by detection, and carry out obtaining testing result after certain data processing.The precision of this instrument and resolution are all very high, but for environment for use comparatively strict requirement are arranged, so this instrument generally is used for lab analysis, are not suitable for color measuring and identification in the commercial production.
Summary of the invention
The purpose of this invention is to provide a kind of cheap color sensor, to be applied to color measuring and the identification in the general industry production.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of color sensor comprises radiation source, photoelectric sensor, the microcontroller with A/D translation function, display module, control circuit for light source and communication interface that the different light of at least 2 kinds of colors can be provided respectively; Described microcontroller is connected with described radiation source by control circuit for light source, described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on the object under test, and described display module is connected with described microcontroller; Described communication interface is connected with described microcontroller.
Above, described microcontroller is connected with described radiation source by control circuit for light source, is to produce the different monochromatic source of a plurality of colors so that measure in order to control; Described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on the object under test, be meant and adopt radiation source that object under test is shone, utilize photoelectric sensor to detect the intensity of reflected light of object under test, be converted into electric signal again and flow to microcontroller; Described display module is a prior art, can adopt LED demonstration, charactron demonstration or LCD or the like.Before detecting object under test, need demarcate standard detection sample with Standard Colors, the quantity of standard detection sample and color are determined according to practical situations.Described communication interface is a prior art, testing result can be sent to other equipment with prescribed form.
The generation of described radiation source can have following several method: (1) adopts white light source+color filter; (2) adopt white light source+Amici prism; (3) luminescent device of employing different colours, for example a plurality of monochromatic light LED; (4) employing can be sent the single led of different colours light in turn.
Optimized technical scheme, described radiation source are the LED luminescent device.In addition, can adopt the radiation source of a plurality of same colors to be set up in parallel, utilize the principle of shadowless lamp,, reduce the interference of extraneous light to improve the homogeneity of light.
Optimized technical scheme, described photoelectric sensor are phototriode.Described photoelectric sensor is a prior art, also can adopt conventional photodiode, photoresistance or photoelectric cell.
The present invention with asking a kind of color detection method of protection, comprises the steps: simultaneously
(1) the different light of at least 2 kinds of colors that utilizes radiation source to produce shines at least 2 standard detection samples respectively, receive the catoptrical light intensity signal that is radiated on the standard detection sample by photoelectric sensor, obtain the detection data of at least 2 standard detection samples;
(2) the different light of at least 2 kinds of colors that utilizes radiation source to produce again shines object under test respectively, receives the catoptrical light intensity signal that is radiated on the object under test by photoelectric sensor, obtains the detection data of object under test;
(3) respectively the detection data of the standard detection sample in the step (1) and the detection data of the object under test in the step (2) are carried out sum of squares of deviations calculating, and relatively big or small, wherein the color of the pairing standard detection sample of minimum value is the color of object under test.
Above, described step (1) is equivalent to transducer calibration, can be carried out in advance by production firm.
Principle of work of the present invention is as follows: adopt the radiation source of different wave length (color) that object under test is shone, utilize photoelectric sensor to detect the intensity of reflected light of object under test simultaneously, because the object under test surface of different colours is different for the light reflection strength of different wave length, therefore basis just can be judged the color of object under test for the testing result of the irradiates light of different wave length.Before formally detecting, need advanced rower fixed, promptly earlier each standard detection sample is shone under the irradiates light of different wave length, record detects light intensity then; When object under test is detected, will detect data and sample data compares, get with the most approaching pairing color of data of standard detection sample as testing result.
Situation with two standard detection samples (red, green) is an example, respectively with red and green light source irradiation standard detection sample, and detects the intensity of reflected light of demarcating the standard detection sample, can obtain corresponding two groups respectively and detect data:
C1＝[C11，C21]，C2＝[C12，C22]
Respectively with red and green light source irradiation object under test, obtain one group and detect data again:
S＝[S1，S2]
The distance of definition object under test color and standard detection sample of color is as follows:
D1
2＝(S1-C11)
2+(S2-C21)
2
D2
2＝(S1-C12)
2+(S2-C22)
2
If D1＜D2 judges that then the object under test color is red (C1); Otherwise, judge that then the object under test color is green (C2).
For generalized case, the accurate detection of bidding sample number is n, and light source kind (wavelength) number that the standard detection sample is shone is m.Then can obtain n standard detection sample C1, C2..., the detection data of Cn are:
C1＝[C11，...，Cm1]
C2＝[C12，...，Cm2]
……
Cn＝[C1n，...，Cmn]
Respectively with m the light source irradiation object under test of demarcating, obtain one group and detect data again:
S＝[S1，...，Sm]
Calculate the distance of object under test color and standard detection sample of color respectively:
D1
2＝(S1-C11)
2+(S2-C21)
2+...+(Sm-Cm1)
2
D2
2＝(S1-C12)
2+(S2-C22)
2+...+(Sm-Cm2)
2
……
Dn
2＝(S1-C1n)
2+(S2-C2n)
2+...+(Sm-Cmn)
2
Compare D1, D2 ... Dn, get the wherein pairing standard detection sample of color of reckling, be the measurement result of object under test color.
Because the employing of technique scheme, compared with prior art, the present invention has following advantage:
1. the present invention utilizes radiation source, photoelectric sensor and device of micro controller to prepare color sensor, can detect the color of object under test exactly, can be applied to color measuring and identification in the general industry production.
2. the present invention is higher for the recognition accuracy of color, and easy to operate, simple in structure, and cost is lower, is suitable for applying.
Description of drawings
Fig. 1 is the composition structural representation of the embodiment of the invention one;
Fig. 2 is the detection synoptic diagram that has 2 LED radiation sources in the embodiment of the invention one.
Embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment one
Shown in accompanying drawing 1～2, a kind of color sensor comprises radiation source, at least 2 standard detection samples, photoelectric sensor, the microcontroller with A/D translation function, display module, control circuit for light source and communication interfaces that the different light of at least 2 kinds of colors can be provided respectively; Described microcontroller is connected with described radiation source by control circuit for light source, described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on standard detection sample or the object under test, described display module is connected with described microcontroller, and described communication interface is connected with described microcontroller.Described radiation source is the LED luminescent device; Described photoelectric sensor is a phototriode.
Above, described microcontroller is connected with described radiation source by control circuit for light source, is to produce the different monochromatic source of a plurality of colors so that measure in order to control; Described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on the object under test, be meant and adopt radiation source that object under test is shone, utilize photoelectric sensor to detect the intensity of reflected light of object under test, be converted into electric signal again and flow to microcontroller; Described display module is a prior art, can adopt LED demonstration, charactron demonstration or LCD or the like.Before detecting object under test, need demarcate standard detection sample with Standard Colors, the quantity of standard detection sample and color are determined according to practical situations.
Fig. 2 is one only to be used 2 led light sources (concrete glow color will be determined according to the measured target color, the monochromatic light LED that can buy in the market has red, green, blue, Huang Si kind color) and photoelectric sensor receive the system of reflected light signal, can be used for the detection and the identification of simple color.The principle of work of this system is as follows: make L1 light the irradiation target by microcontroller (MCU), detect the received signal of photoelectric sensor then; L2 is lighted, detect the received signal of photoelectric sensor then, obtain two and detect data; According to these two detect that data can calculate and the standard detection sample between sum of squares of deviations, the color relation of the pairing standard detection sample of wherein less sum of squares of deviations is a testing result.Testing result can be sent to miscellaneous equipment by communication interface.Utilize this color sensor can make automatic detection device at the vegetable and fruit color and luster.In industrial production line, logistics course of conveying, can stick the sign of different colours to object of different nature, utilize this color pick-up unit to detect then and handle respectively, for example goods sorting etc.This device can be eliminated the error that artificial differentiation causes.
Claims (4)
1. color sensor is characterized in that: comprise radiation source, photoelectric sensor, the microcontroller with A/D translation function, display module, control circuit for light source and communication interface that the different light of at least 2 kinds of colors can be provided respectively; Described microcontroller is connected with described radiation source by control circuit for light source, described microcontroller receives described radiation source by photoelectric sensor and is radiated at the catoptrical light intensity signal that produces on the object under test, and described display module is connected with described microcontroller; Described communication interface is connected with described microcontroller.
2. color sensor according to claim 1 is characterized in that: described radiation source is the LED luminescent device.
3. color sensor according to claim 1 is characterized in that: described photoelectric sensor is a phototriode.
4. a color detection method is characterized in that, comprises the steps:
(1) the different light of at least 2 kinds of colors that utilizes radiation source to produce shines at least 2 standard detection samples respectively, receive the catoptrical light intensity signal that is radiated on the standard detection sample by photoelectric sensor, obtain the detection data of at least 2 standard detection samples;
(2) the different light of at least 2 kinds of colors that utilizes radiation source to produce again shines object under test respectively, receives the catoptrical light intensity signal that is radiated on the object under test by photoelectric sensor, obtains the detection data of object under test;
(3) respectively the detection data of the standard detection sample in the step (1) and the detection data of the object under test in the step (2) are carried out sum of squares of deviations calculating, and relatively big or small, wherein the color of the pairing standard detection sample of minimum value is the color of object under test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100337207A CN101586984A (en) | 2009-06-02 | 2009-06-02 | Color sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100337207A CN101586984A (en) | 2009-06-02 | 2009-06-02 | Color sensor |
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|---|---|
| CN101586984A true CN101586984A (en) | 2009-11-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101393A (en) * | 2013-01-18 | 2013-05-15 | 河北工业大学 | Automatic mixing device for pigment |
| CN105223627A (en) * | 2015-09-21 | 2016-01-06 | 福州果核电子科技有限公司 | A kind of cupboard and storing detection method thereof |
| CN105445203A (en) * | 2015-09-28 | 2016-03-30 | 蒙泽新 | Fruit surface color detection device |
| CN106486258A (en) * | 2016-12-20 | 2017-03-08 | 朱小菊 | Self- recoverage respirator |
| CN108398389A (en) * | 2018-04-04 | 2018-08-14 | 嘉善卡勒机车零部件有限公司 | Locomotive element detection device |
| CN112129716A (en) * | 2020-08-25 | 2020-12-25 | 江苏大学 | Green plant identification probe with adjustable sensitivity |
-
2009
- 2009-06-02 CN CNA2009100337207A patent/CN101586984A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101393A (en) * | 2013-01-18 | 2013-05-15 | 河北工业大学 | Automatic mixing device for pigment |
| CN103101393B (en) * | 2013-01-18 | 2015-03-11 | 河北工业大学 | Automatic mixing device for pigment |
| CN105223627A (en) * | 2015-09-21 | 2016-01-06 | 福州果核电子科技有限公司 | A kind of cupboard and storing detection method thereof |
| CN105223627B (en) * | 2015-09-21 | 2019-09-10 | 福州果核电子科技有限公司 | A kind of cabinet and its storing detection method |
| CN105445203A (en) * | 2015-09-28 | 2016-03-30 | 蒙泽新 | Fruit surface color detection device |
| CN106486258A (en) * | 2016-12-20 | 2017-03-08 | 朱小菊 | Self- recoverage respirator |
| CN107910164A (en) * | 2016-12-20 | 2018-04-13 | 朱小菊 | Electric power transformer breathing apparatus |
| CN107910164B (en) * | 2016-12-20 | 2019-04-05 | 南京禹智智能科技有限公司 | Electric power transformer breathing apparatus |
| CN108398389A (en) * | 2018-04-04 | 2018-08-14 | 嘉善卡勒机车零部件有限公司 | Locomotive element detection device |
| CN112129716A (en) * | 2020-08-25 | 2020-12-25 | 江苏大学 | Green plant identification probe with adjustable sensitivity |
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