CN103698285A - Two-waveband-based online detection method and two-waveband-based online detection device for eggs with blood pots - Google Patents
Two-waveband-based online detection method and two-waveband-based online detection device for eggs with blood pots Download PDFInfo
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Abstract
The invention discloses a two-waveband-based online detection method and a two-waveband-based online detection device for eggs with blood pots, wherein a light source part is installed just below a conveying mechanism by a lower support arm; a detection unit is coaxially installed just above the conveying mechanism by an upper support arm; the conveying mechanism for the eggs is installed between the light source part and the detection unit; the detection unit is used for generating voltage signals; the voltage signals generated in two channels are converted to digital signals in a data processing unit by an amplifier and an A/D (analogue/digital converter); a binary Logistic discrimination model is combined, and the formula is Y = 121.9*A - 149.361*B - 16.028, wherein A is the average optical absorbance value in a waveband range of 580 +/- 10 nm, B is the average optical absorbance value in a waveband range of 600 +/- 10 nm; when Y is not less than 0, the judged result is that the eggs are normal, and when Y is less than 0, the judged result is that the eggs are provided with blood pots. According to the method and the device disclosed by the invention, the loss of optical intensity is reduced and the sensitivity of detection is improved on the premise of acquiring the spectral information of two wavebands simultaneously.
Description
Technical field
The present invention relates to online test method and device, especially relate to a kind of blood cake egg online test method and the device based on two waveband that adopts Vis/NIR technology.
Background technology
Egg nutrient is abundant, cheap, has become one of source of nutrition that the mankind are indispensable.China is egg big producing country, and output occupy first place, the world.Yet defect egg, as there is blood cake in egg, will have a strong impact on the quality of egg.Blood cake is the inner a kind of common defect of egg, mostly is punctation or striped, is common in yolk or albumen, normally because the factors such as hypovitaminosis, disease or heredity cause.Probably have in the egg of 2%-10% and all can occur blood cake, the existence of blood cake can affect consumer's perception and desire to buy, to the selling price of birds, beasts and eggs and export most important.On Dec 20th, 2011, the fresh hen egg of China Department of Commerce issue, the industry standard of FRESH DUCK EGGS classification are pointed out, have the egg of the foreign matters such as blood cake, meat spot for inside, be decided to be defective, edible not.And for the detection of this blood cake egg, be to adopt artificial candler to identify at present, this method time and effort consuming, and verification and measurement ratio is lower.
Vis/NIR detection technique, owing to having fast, can't harm, has become a kind of very welcome detection technique, and it is applicable to the commercial production of scale, robotization, can be used for the online detection of commodity, realizes the automatic classification of commodity.The device that has existed some to utilize Vis/NIR detection blood cake egg in existing technology, as:
In US Patent No. 2823800, a kind of device that detects blood cake egg with dual wavelength has been described.In order to obtain dual wavelength light spectrum information, this device rotates by synchronous motor driven rotary mirror, when rotating mirror turns to optical filter 1, can obtain the spectral information of 578 nm wavelength left and right, when rotating mirror turns to optical filter 2, can obtain the spectral information of 595 nm wavelength left and right.Although the method can obtain the spectral information under two different wave lengths, not to obtain simultaneously, egg need to stop when detecting, so this device detects, lacks real-time, and detection efficiency is low.
In US Patent No. 4039259, a kind of device that detects blood cake egg with dual wavelength has been described.In order to obtain dual wavelength light spectrum information, this device is separated by two optical filters 180 ° and is arranged on a disk, by driven by motor disc rotary.When optical filter 1 process light source, can obtain the spectral information of 575 nm wavelength left and right, when optical filter 2 process light source, can obtain the spectral information of 600 nm wavelength left and right.Similar with a upper patent, although this device can obtain two spectral informations under different wave length, not to obtain simultaneously, also lack real-time.
In US Patent No. 7545487, a kind of device that detects blood cake egg with dual wavelength has been described.In order to obtain dual wavelength light spectrum information, this device adopts translucent eyeglass, and the light that it can be realized under a certain wavelength reflects, and other light generation transmissions.When the light of reflection is after filtration during mating plate 1, can obtain the spectral information of 577 nm wavelength left and right; When transmitted ray enters to filter mating plate 2, can obtain the spectral information of 600 nm wavelength left and right.Although this device can obtain two spectral informations under different wave length simultaneously, can produce light intensity loss light transmissive time realizing the reflection of a part of light and another part with translucent eyeglass, make signal weaker, thereby have influence on the sensitivity of detection.
Summary of the invention
The object of this invention is to provide a kind of blood cake egg online test method and device based on two waveband, utilize bifurcated optical fiber, in assurance, obtain under the prerequisite of two waveband spectral information simultaneously, reduce the loss of light intensity, and in conjunction with binary Logistic discrimination model, realize the real-time online detection of blood cake egg.
The technical solution used in the present invention is as follows:
One, a kind of blood cake egg detection method based on two waveband
The present invention adopts two waveband method, the light beam of halogen tungsten lamp transmitting sees through egg, detected unit receives, received light beam has entered respectively two passages by bifurcated optical fiber, a passage is the wave band transmitted light that receives 580 ± 10 nm, another passage is the wave band transmitted light that receives 600 ± 10 nm, realizes the differentiation of blood cake egg at data processing unit in conjunction with binary Logistic discrimination model.
Described binary Logistic discrimination model, its discriminant value formula is Y=121.9*A-149.361*B-16.028, wherein A is the mean light absorbency value of 580 ± 10 nm wavelength band, B is the mean light absorbency value of 600 ± 10 nm wavelength band, when Y >=0, be judged as normal egg, when Y<0, be judged as blood cake egg.
Two, the blood cake egg pick-up unit based on two waveband
The present invention includes the Lights section, conveying mechanism, detecting unit and data processing unit; The Lights section by lower carriage arm be arranged on conveying mechanism under, detecting unit by upper bracket arm be coaxially arranged on conveying mechanism directly over, the conveying mechanism of egg is housed between the Lights section and detecting unit, and the voltage signal that detecting unit produces connects data processing unit.
Described the Lights section: comprise lampshade, halogen tungsten lamp, lens and fan; Lens are arranged on the front end of lampshade by threaded collar, halogen tungsten lamp is equipped with in lampshade rear end, and lens will equal the focal length of lens to the distance of halogen tungsten lamp, and fan is equipped with in halogen tungsten lamp side.
Described conveying mechanism: comprise chain, shape of a saddle conveying roller, little axle, track and friction belt, shape of a saddle conveying roller two outer side center all have little axle, a plurality of shape of a saddle conveying rollers are equidistantly arranged on chain by little axle separately, friction belt is arranged between track and shape of a saddle conveying roller, tested egg is placed on adjacent shape of a saddle conveying roller, when chain rotates, shape of a saddle conveying roller evenly rotates with chain translation and under the effect of friction belt, there is evenly upset in the egg that makes to be placed on adjacent shape of a saddle conveying roller, on track and friction belt, all have circular hole, the diameter of circular hole is identical with the spot size that the Lights section forms, and be just two ultimate ranges between shape of a saddle conveying roller, circular hole and the Lights section and detecting unit center being aligned during detection.
Described detecting unit: be fan-shaped of Y shape, there is the 3rd semi-permeable mirror fan-shaped lower stomidium is in-built, in the passage of two jags in fan-shaped upper end, in first passage from top to down, the first photodiode is housed successively, the first optical filter and the first semi-permeable mirror, in another passage from top to down, the second photodiode is housed successively, the second optical filter and the second semi-permeable mirror, the first semi-permeable mirror, the second semi-permeable mirror with after the 3rd semi-permeable mirror, through fiber optic connector separately, be connected bifurcated optical fiber respectively, the distance of the first semi-permeable mirror to the distance of the first photodiode and the second semi-permeable mirror to the second photodiode will equal the focal length of semi-permeable mirror separately,
Described data processing unit: comprise amplifier, A/D converter and computing machine; After changing into digital signal by amplifier and A/D converter, the voltage signal being produced by the first photodiode and the second photodiode connects computing machine.
The beneficial effect that the present invention has is:
The present invention has realized in assurance and having obtained under the prerequisite of two waveband spectral information simultaneously, reduces the loss of light intensity, has improved the sensitivity detecting; The present invention is simultaneously simple in structure, easy to operate, and the real-time online that can realize blood cake egg detects.
Accompanying drawing explanation
Fig. 1 is Multi-channel integral schematic diagram of the present invention.
Fig. 2 is single channel overall schematic of the present invention.
Fig. 3 is the schematic diagram of single channel of the present invention when not working.
Fig. 4 is the Lights section internal view of the present invention.
Fig. 5 is detecting unit internal view of the present invention.
Fig. 6 is single channel conveying mechanism front view of the present invention.
Fig. 7 is single channel conveying mechanism vertical view of the present invention.
Fig. 8 is experimental result classification chart of the present invention.
In figure: 1, the Lights section; 2, transport sector; 3, egg; 4, detecting unit; 5, upper bracket arm; 6, data processing unit; 7, track; 8, data line; 9, amplifier; 10, A/D converter; 11, power lead; 12, halogen tungsten lamp; 13, lampshade; 14, lens; 15, threaded collar; 16a, semi-permeable mirror; 16b, semi-permeable mirror; 16c, semi-permeable mirror; 17a, fiber optic connector; 17b, fiber optic connector; 17c, fiber optic connector; 18, bifurcated optical fiber; 19a, optical filter; 19b, optical filter; 20a, photodiode; 20b, photodiode; 21a, passage; 21b, passage; 22, fan-shaped; 23, chain; 24, shape of a saddle conveying roller; 25, little axle; 26, circular hole; 27, friction belt; 28, lower carriage arm; 29, fan.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
As shown in Figure 1 and Figure 2, the present invention, when detecting blood cake egg, both can detect for single channel, also can, for multi-channel detection, can select according to port number the length of upper bracket arm 5 and lower carriage arm 28.
As shown in Figure 2 and Figure 3, the present invention includes the Lights section 1, conveying mechanism 2, detecting unit 4 and data processing unit 6; The Lights section 1 by lower carriage arm 28 be arranged on conveying mechanism 2 under, detecting unit 4 by upper bracket arm 5 be coaxially arranged on conveying mechanism 2 directly over, the conveying mechanism 2 of egg 3 is housed between the Lights section 1 and detecting unit 4, and the voltage signal that detecting unit 4 produces connects data processing unit 6.The center of the Lights section 1 and detecting unit 4 is on same straight line, and be positioned at the centre of two shape of a saddle conveying rollers 24, the object of design is in order to realize when egg 3 passes through the Lights section 1 and detecting unit 4 like this, light can farthest be radiated on egg 3, and detecting unit 4 can obtain the strongest transmitted light like this.When the present invention is not having in harness time, detecting unit 4 can be turned to horizontal level, be convenient to like this installation, maintenance and clean.Upper bracket arm 5 and lower carriage arm 28 its inside are hollow, and data line 8 is arranged in the inside of upper bracket arm 5, and power lead 11 is arranged in the inside of lower carriage arm 28, can not be damaged by protection circuit like this.
As shown in Figure 3, Figure 4, described the Lights section 1 comprises lampshade 13, halogen tungsten lamp 12, lens 14 and fan 29; Lens 14 are arranged on the front end of lampshade 13 by threaded collar 15, halogen tungsten lamp 12 is equipped with in lampshade 13 rear ends, and lens 14 will equal the focal length of lens 14 to the distance of halogen tungsten lamp 12, and fan 29 is equipped with in halogen tungsten lamp 12 sides.When work, halogen tungsten lamp 12 can produce a large amount of heats, if the heat that leaves not in time can cause the unstable of light source, in order to guarantee the stability of light source, therefore, in the one end near halogen tungsten lamp 12, fan 29 is housed.
As shown in Figure 6, Figure 7, described conveying mechanism 2 comprises chain 23, shape of a saddle conveying roller 24, little axle 25, track 7 and friction belt 27; 24 liang of outer side center of shape of a saddle conveying roller all have little axle 25, a plurality of shape of a saddle conveying rollers 24 are equidistantly arranged on chain 23 by little axle 25 separately, friction belt 27 is arranged between track 7 and shape of a saddle conveying roller 24, tested egg 3 is placed on adjacent shape of a saddle conveying roller 24, when chain 23 rotates, shape of a saddle conveying roller 24 evenly rotates with chain 23 translations and under the effect of friction belt 27, there is evenly upset in the egg 3 that makes to be placed on adjacent shape of a saddle conveying roller 24, can guarantee that like this detecting unit 4 can obtain the information of egg 3 complete cycles when detecting.On track 7 and friction belt 27, all have circular hole 26, the diameter of circular hole 26 is identical with the spot size that the Lights section 1 forms, and be just the ultimate range of 24 of two shape of a saddle conveying rollers, circular hole 26 and the Lights section 1 and detecting unit 4 center being aligneds during detection, guarantee that the optical energy irradiation of the Lights section 1 generation is to egg 3, and can prevent that parasitic light from entering detecting unit 4, improve accuracy of detection.
As shown in Figure 5, described detecting unit 4 is Y shape fan-shaped 22, there is a 3rd semi-permeable mirror 16c fan-shaped 22 times stomidium are in-built, in the passage of fan-shaped 22 two jags in upper end, in first passage 21a from top to down, the first photodiode 20a(model being housed is successively SM1PD1A), the first optical filter 19a(centre wavelength is 580 nm, peak width is 10 nm) and the first semi-permeable mirror 16a, in another passage 21b from top to down, the second photodiode 20b(model being housed is successively SM1PD1A), the second optical filter 19b(centre wavelength is 600 nm, peak width is 10 nm) and the second semi-permeable mirror 16b, the first semi-permeable mirror 16a, the second semi-permeable mirror 16b with after the 3rd semi-permeable mirror 16c, through fiber optic connector separately, be connected bifurcated optical fiber 18 respectively, the distance of the first semi-permeable mirror 16a to the distance of the first photodiode 20a and the second semi-permeable mirror 16b to the second photodiode 20b will equal the focal length of semi-permeable mirror separately.Adopt bifurcated optical fiber 18 to obtain under the prerequisite of two waveband spectral information in assurance simultaneously, reduce the loss of light intensity.
As shown in Figure 5, described data processing unit 6 comprises that amplifier 9(model is AD8021AR), A/D converter 10(model is AD7705BNZ) and computing machine; After changing into digital signal by amplifier 9 and A/D converter 10, the voltage signal being produced by the first photodiode 20a and the second photodiode 20b connects computing machine.
Discrimination model of the present invention is to adopt 194 these eggs, and gives this 194 egg labels, and 1-96 is as normal egg, and the egg of 97-194 numbering is blood cake egg, is under the condition of 4/second in transporting velocity, obtains spectroscopic data and modeling analysis obtains.By 96 normal eggs, be divided into 64 of modeling collection, 32 of forecast sets; 98 blood cake eggs, are divided into 66 of modeling collection, 32 of forecast sets.Fig. 8 is modeling classification results figure, classification is Y=121.9*A-149.361*B-16.028 with binary Logistic discrimination model, wherein A is the mean light absorbency value of 580 ± 10 nm wavelength band, B is the mean light absorbency value of 600 ± 10 nm wavelength band, when Y >=0, be judged as normal egg, when Y<0, be judged as blood cake egg.Table 1 is the concrete outcome of discriminant classification, and as can be seen from the table, the overall differentiation rate of normal egg and blood cake egg has all reached 96.9%, can meet the testing requirement of blood cake egg.
Table 1 is experimental result of the present invention
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (7)
1. the blood cake egg online test method based on two waveband, it is characterized in that: adopt two waveband method, the light beam of halogen tungsten lamp transmitting sees through egg, detected unit receives, received light beam has entered respectively two passages by bifurcated optical fiber, a passage is the wave band transmitted light that receives 580 ± 10 nm, and another passage is the wave band transmitted light that receives 600 ± 10 nm, realizes the differentiation of blood cake egg at data processing unit in conjunction with binary Logistic discrimination model.
2. a kind of blood cake egg online test method based on two waveband according to claim 1, it is characterized in that: described binary Logistic discrimination model, its discriminant value formula is Y=121.9*A-149.361*B-16.028, wherein A is the mean light absorbency value of 580 ± 10 nm wavelength band, B is the mean light absorbency value of 600 ± 10 nm wavelength band, when Y >=0, is judged as normal egg, when Y<0, be judged as blood cake egg.
3. a kind of blood cake egg on-line measuring device based on two waveband that implements the claims method described in 1, is characterized in that: comprise the Lights section (1), conveying mechanism (2), detecting unit (4) and data processing unit (6); The Lights section (1) by lower carriage arm (28) be arranged on conveying mechanism (2) under, detecting unit (4) by upper bracket arm (5) be coaxially arranged on conveying mechanism (2) directly over, the conveying mechanism (2) of egg (3) is housed between the Lights section (1) and detecting unit (4), and the voltage signal that detecting unit (4) produces connects data processing unit (6).
4. a kind of blood cake egg on-line measuring device based on two waveband according to claim 3, is characterized in that described the Lights section (1): comprise lampshade (13), halogen tungsten lamp (12), lens (14) and fan (29); Lens (14) are arranged on the front end of lampshade (13) by threaded collar (15), halogen tungsten lamp (12) is equipped with in lampshade (13) rear end, lens (14) will equal the focal length of lens (14) to the distance of halogen tungsten lamp (12), and fan (29) is equipped with in halogen tungsten lamp (12) side.
5. a kind of blood cake egg on-line measuring device based on two waveband according to claim 3, it is characterized in that described conveying mechanism (2): comprise chain (23), shape of a saddle conveying roller (24), little axle (25), track (7) and friction belt (27), shape of a saddle conveying roller (24) two outer side center all have little axle (25), a plurality of shape of a saddle conveying rollers (24) are equidistantly arranged on chain (23) by little axle (25) separately, friction belt (27) is arranged between track (7) and shape of a saddle conveying roller (24), tested egg (3) is placed on adjacent shape of a saddle conveying roller (24), when chain (23) rotates, shape of a saddle conveying roller (24) evenly rotates with chain (23) translation and under the effect of friction belt (27), there is evenly upset in the egg (3) that makes to be placed on adjacent shape of a saddle conveying roller (24), on track (7) and friction belt (27), all have circular hole (26), the diameter of circular hole (26) is identical with the spot size that the Lights section (1) forms, and be just the ultimate range between two shape of a saddle conveying rollers (24), circular hole during detection (26) and the Lights section (1) and detecting unit (4) center being aligned.
6. a kind of blood cake egg on-line measuring device based on two waveband according to claim 3, it is characterized in that: described detecting unit (4): be fan-shaped (22) of Y shape, there is the 3rd semi-permeable mirror (16c) fan-shaped (22) lower stomidium is in-built, in the passage of two jags in fan-shaped (22) upper end, in first passage (21a) from top to down, the first photodiode (20a) is housed successively, the first optical filter (19a) and the first semi-permeable mirror (16a), in another passage (21b) from top to down, the second photodiode (20b) is housed successively, the second optical filter (19b) and the second semi-permeable mirror (16b), the first semi-permeable mirror (16a), the second semi-permeable mirror (16b) and the 3rd semi-permeable mirror (16c) are connected bifurcated optical fiber (18) through fiber optic connector separately respectively below, the distance of the first semi-permeable mirror (16a) to the distance of the first photodiode (20a) and the second semi-permeable mirror (16b) to the second photodiode (20b) will equal the focal length of semi-permeable mirror separately.
7. a kind of blood cake egg on-line measuring device based on two waveband according to claim 3, is characterized in that: described data processing unit (6): comprise amplifier (9), A/D converter (10) and computing machine; After changing into digital signal by amplifier (9) and A/D converter (10), the voltage signal being produced by the first photodiode (20a) and the second photodiode (20b) connects computing machine.
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| CN105911000A (en) * | 2016-04-15 | 2016-08-31 | 华中农业大学 | Characteristic wave band based blood spot egg on-line detection method |
| CN112154326A (en) * | 2018-05-30 | 2020-12-29 | 塞莱格特有限公司 | Method for determining the sex of chicken embryos |
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| CN112154326B (en) * | 2018-05-30 | 2023-11-21 | 塞莱格特有限公司 | Method for determining sex of chicken embryo |
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