CN103698285B - Ecchymosis egg online test method and device based on two waveband - Google Patents

Ecchymosis egg online test method and device based on two waveband Download PDF

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Publication number
CN103698285B
CN103698285B CN201310691480.6A CN201310691480A CN103698285B CN 103698285 B CN103698285 B CN 103698285B CN 201310691480 A CN201310691480 A CN 201310691480A CN 103698285 B CN103698285 B CN 103698285B
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China
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egg
detection unit
light source
ecchymosis
pellicle mirror
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CN201310691480.6A
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CN103698285A (en
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徐惠荣
陈猛
张卢锐
郎雷
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浙江大学
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Abstract

The invention discloses a kind of ecchymosis egg online test method based on two waveband and device. light source part is arranged on the underface of conveying mechanism by lower carriage arm, detection unit is coaxially mounted to the surface of conveying mechanism by upper bracket arm, equipped with the conveying mechanism of egg between light source part and detection unit, the voltage signal that detection unit produces, in data processing unit, by amplifier and A/D converter, the voltage signal that two passages produce is changed into digital signal, and in conjunction with binary Logistic discrimination model, formula is Y=121.9*A-149.361*B-16.028, does is wherein A 580 �� 10? the mean absorbance values of nm wavelength band, B is the mean absorbance values of 600 �� 10nm wavelength band, when Y>=0, it is judged as normal egg, when Y is<when 0, it is judged as ecchymosis egg. the present invention ensures, under the premise of acquisition two waveband spectral information simultaneously, to reduce the loss of light intensity, improve the sensitivity of detection.

Description

Ecchymosis egg online test method and device based on two waveband

Technical field

The present invention relates to online test method and device, especially relate to adopt a kind of ecchymosis egg online test method based on two waveband and the device of Vis/NIR technology.

Background technology

Egg nutrient enriches, cheap, it has also become one of source of nutrition that the mankind are indispensable. China is egg big producing country, and yield occupy first place, the world. But, defect egg, ecchymosis occurs in egg, it will had a strong impact on the quality of egg. Ecchymosis is the internal a kind of common defect of egg, mostly is punctation or striped, is common in egg yolk or albumen, it is common that owing to the factors such as vitamin deficiency, disease or heredity cause. Probably having in the egg of 2%-10% and ecchymosis all can occur, the existence of ecchymosis can affect perception and the desire to buy of consumer, to the selling price of fowl egg and export most important. On December 20th, 2011, fresh hen egg, the industry standard of FRESH DUCK EGGS classification that Department of Commerce of China issues point out inside is existed to the egg of the foreign body such as ecchymosis, meat spot, are decided to be defective, inedible. And for the detection of this ecchymosis egg, being currently the artificial candler of employing identifies, this method time and effort consuming, and verification and measurement ratio is relatively low.

Vis/NIR detection technique is quick, lossless owing to having, and has become a kind of very popular detection technique, and it is applicable to the commercial production of scale, automatization, can be used for the on-line checking of commodity, it is achieved the automatic classification of commodity. Existing technology has existed some devices utilizing Vis/NIR detection ecchymosis egg, as:

In US Patent No. 2823800, describe the device of a kind of double UV check ecchymosis egg. In order to obtain dual wavelength light spectrum information, this device is rotated mirror by synchronous motor and rotates, the spectral information about 578nm wavelength can be obtained when revolving mirror turns to optical filter 1, when revolving mirror turns to optical filter 2, the spectral information about 595nm wavelength can be obtained.Although the method can obtain the spectral information under two different wave lengths, but is not obtain simultaneously, egg needs when detection to stop, so the detection of this device lacks real-time, detection efficiency is low.

In US Patent No. 4039259, describe the device of a kind of double UV check ecchymosis egg. In order to obtain dual wavelength light spectrum information, two optical filters are separated by 180 �� and are arranged on a disk by this device, by driven by motor disc rotary. When optical filter 1 is through light source, it is possible to obtain the spectral information about 575nm wavelength, when optical filter 2 is through light source, it is possible to obtain the spectral information about 600nm wavelength. Similar with a upper patent, although this device can obtain the spectral information under two different wave lengths, but it not obtain simultaneously, lack real-time yet.

In US Patent No. 7545487, describe the device of a kind of double UV check ecchymosis egg. In order to obtain dual wavelength light spectrum information, this device adopts translucent eyeglass, and the light that it can realize under a certain wavelength reflects, and other light generation transmissions. When the light of reflection is through optical filter 1, it is possible to obtain the spectral information about 577nm wavelength; When transmitted ray entered optical filter 2, it is possible to obtain the spectral information about 600nm wavelength. Although this device can obtain the spectral information under two different wave lengths simultaneously, but realizing a part of luminous reflectance with translucent eyeglass and another part can produce light intensity loss time light transmissive so that signal weaker, thus having influence on the sensitivity of detection.

Summary of the invention

It is an object of the invention to provide a kind of ecchymosis egg online test method based on two waveband and device, utilize bifurcated optical fiber, under ensureing the premise simultaneously obtaining two waveband spectral information, reduce the loss of light intensity, and realize the real-time online detection of ecchymosis egg in conjunction with binary Logistic discrimination model.

The technical solution used in the present invention is as follows:

One, a kind of ecchymosis egg detection method based on two waveband

The present invention adopts two waveband method, the light beam that halogen tungsten lamp is launched is through egg, detected unit receives, the light beam received has respectively enterd two passages by bifurcated optical fiber, one passage is the wavelength region light of reception 580 �� 10nm, another passage is the wavelength region light of reception 600 �� 10nm, realizes the differentiation of ecchymosis 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 absorbance values of 580 �� 10nm wavelength band, B is the mean absorbance values of 600 �� 10nm wavelength band, when Y>=0, it is judged as normal egg, when Y is<when 0, it is judged that for ecchymosis egg.

Two, based on the ecchymosis egg detecting device of two waveband

The present invention includes light source part, conveying mechanism, detection unit and data processing unit; Light source part is arranged on the underface of conveying mechanism by lower carriage arm, detection unit is coaxially mounted to the surface of conveying mechanism by upper bracket arm, equipped with the conveying mechanism of egg between light source part and detection unit, the voltage signal that detection unit produces connects data processing unit.

Described light source part: include lampshade, halogen tungsten lamp, lens and fan; Lens are arranged on the front end of lampshade by threaded collar, and lampshade rear end is equipped with halogen tungsten lamp, and lens will equal to the focal length of lens to the distance of halogen tungsten lamp, and halogen tungsten lamp side is equipped with fan.

Described conveying mechanism: include chain, shape of a saddle conveying roller, little axle, track and friction belt;Shape of a saddle conveying roller two outer side center all has little axle, multiple shape of a saddle conveying rollers are equidistantly mounted on chain by respective little axle, 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 with chain translation and under the effect of friction belt uniform rotation, make the egg being placed on adjacent shape of a saddle conveying roller that uniformly upset to occur, track and friction belt all have circular hole, the spot size that the diameter of circular hole is formed with light source part is identical, and be just the ultimate range between two shape of a saddle conveying rollers, circular hole and light source part and detection unit center being aligned during detection.

Described detection unit: for the fan-shaped frame of Y shape, under fan-shaped frame, stomidium is built with the 3rd pellicle mirror, in the passage of two jags in fan-shaped frame upper end, first passage from top to down is sequentially arranged with the first photodiode, first optical filter and the first pellicle mirror, another passage from top to down is sequentially arranged with the second photodiode, second optical filter and the second pellicle mirror, first pellicle mirror, bifurcated optical fiber is connected through respective fiber optic connector respectively after second pellicle mirror and the 3rd pellicle mirror, first pellicle mirror to be equal to the focal length of respective pellicle mirror to the distance of the first photodiode and the second pellicle mirror to the distance of the second photodiode,

Described data processing unit: include amplifier, A/D converter and computer; The voltage signal produced by the first photodiode and the second photodiode changes into digital signal by amplifier and A/D converter and is followed by computer.

The invention have the advantages that:

Present invention achieves under ensureing the premise simultaneously obtaining two waveband spectral information, reduce the loss of light intensity, improve the sensitivity of detection; Present configuration is simple simultaneously, easy to operate, it may be achieved the real-time online detection of ecchymosis egg.

Accompanying drawing explanation

Fig. 1 is the multichannel overall schematic of the present invention.

Fig. 2 is the single channel overall schematic of the present invention.

Fig. 3 is the single channel of the present invention schematic diagram when not working.

Fig. 4 is the light source partial interior sectional view of the present invention.

Fig. 5 is the detection unit internal view of the present invention.

Fig. 6 is the single channel conveying mechanism front view of the present invention.

Fig. 7 is the single channel conveying mechanism top view of the present invention.

Fig. 8 is the experimental result classification chart of the present invention.

In figure: 1, light source part; 2, transmission mechanism; 3, egg; 4, detection unit; 5, upper bracket arm; 6, data processing unit; 7, track; 8, data line; 9, amplifier; 10, A/D converter; 11, power line; 12, halogen tungsten lamp; 13, lampshade; 14, lens; 15, threaded collar; 16a, pellicle mirror; 16b, pellicle mirror; 16c, pellicle 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 frame; 23, chain; 24, shape of a saddle conveying roller; 25, little axle; 26, circular hole; 27, friction belt; 28, lower carriage arm; 29, fan.

Detailed description of the invention

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 ecchymosis egg, both may be used for single channel detection, it is also possible to for multi-channel detection, can select upper bracket arm 5 and the length of lower carriage arm 28 according to port number.

As shown in Figure 2 and Figure 3, the present invention includes light source part 1, conveying mechanism 2, detection unit 4 and data processing unit 6; Light source part 1 is arranged on the underface of conveying mechanism 2 by lower carriage arm 28, detection unit 4 passes through upper bracket arm 5 and is coaxially mounted to the surface of conveying mechanism 2, equipped with the conveying mechanism 2 of egg 3 between light source part 1 and detection unit 4, the voltage signal that detection unit 4 produces connects data processing unit 6. The center of light source part 1 and detection unit 4 is on same straight line, and it is positioned at the centre of two shape of a saddle conveying rollers 24, that so design in order that realize when egg 3 passes through light source part 1 and detects unit 4, light can farthest be radiated on egg 3, and so detection unit 4 can obtain the strongest transmission light. When the present invention is not when having in harness, detection unit 4 can be turned to horizontal level, so be easily installed, keep in repair and clean. Upper bracket arm 5 and lower carriage arm 28 are hollow inside it, and data line 8 is arranged in the inside of upper bracket arm 5, and power line 11 is arranged in the inside of lower carriage arm 28, so can protection circuit without damage.

As shown in Figure 3, Figure 4, described light source part 1 includes 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, and lampshade 13 rear end is equipped with halogen tungsten lamp 12, and lens 14 will equal to the focal length of lens 14 to the distance of halogen tungsten lamp 12, and halogen tungsten lamp 12 side is equipped with fan 29. Operationally, halogen tungsten lamp 12 can produce substantial amounts of heat, if the heat that leaves not in time can cause the instability of light source, in order to ensure the stability of light source, therefore, in the one end near halogen tungsten lamp 12 equipped with fan 29.

As shown in Figure 6, Figure 7, described conveying mechanism 2 includes 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, multiple shape of a saddle conveying rollers 24 are equidistantly mounted on chain 23 by respective little axle 25, 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 with chain 23 translation and under the effect of friction belt 27 uniform rotation, make the egg 3 being placed on adjacent shape of a saddle conveying roller 24 that uniform upset to occur, so can ensure that when detection, detection unit 4 can obtain the information of egg 3 complete cycle. Track 7 and friction belt 27 all have circular hole 26, the spot size that the diameter of circular hole 26 is formed with light source part 1 is identical, and be just the ultimate range between two shape of a saddle conveying rollers 24, circular hole 26 and light source part 1 and detection unit 4 center being aligned during detection, ensure that the optical energy irradiation of light source part 1 generation is to egg 3, and it is possible to prevent veiling glare to enter detection unit 4, improve accuracy of detection.

As shown in Figure 5, described detection unit 4 is the fan-shaped frame 22 of Y shape, at fan-shaped 22 times stomidiums of frame built with the 3rd pellicle mirror 16c, in the passage of two jags in fan-shaped frame 22 upper end, being sequentially arranged with the first photodiode 20a(model in first passage 21a from top to down is SM1PD1A), first optical filter 19a(centre wavelength is 580nm, peak width is 10nm) and the first pellicle mirror 16a, being sequentially arranged with the second photodiode 20b(model in another passage 21b from top to down is SM1PD1A), second optical filter 19b(centre wavelength is 600nm, peak width is 10nm) and the second pellicle mirror 16b, first pellicle mirror 16a, bifurcated optical fiber 18 is connected through respective fiber optic connector respectively after second pellicle mirror 16b and the three pellicle mirror 16c, the distance of the first pellicle mirror 16a to first photodiode 20a and the distance of the second pellicle mirror 16b to second photodiode 20b to be equal to the focal length of respective pellicle mirror.Adopt bifurcated optical fiber 18 that the loss of light intensity under ensureing the premise simultaneously obtaining two waveband spectral information, can be reduced.

As it is shown in figure 5, it is AD8021AR that described data processing unit 6 includes amplifier 9(model), A/D converter 10(model be AD7705BNZ) and computer; The voltage signal produced by the first photodiode 20a and the second photodiode 20b is changed into digital signal be followed by computer by amplifier 9 and A/D converter 10.

The 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 ecchymosis egg, when transporting velocity is 4/second, obtains spectroscopic data and modeling analysis obtains. By 96 normal eggs, it is divided into modeling collection 64, it was predicted that collect 32; 98 ecchymosis eggs, are divided into modeling collection 66, it was predicted that collect 32. Fig. 8 is modeling of class result figure, classification binary Logistic discrimination model is Y=121.9*A-149.361*B-16.028, wherein A is the mean absorbance values of 580 �� 10nm wavelength band, B is the mean absorbance values of 600 �� 10nm wavelength band, when Y>=0, it is judged as normal egg, when Y is<when 0, it is judged that for ecchymosis 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 ecchymosis egg has all reached 96.9%, it is possible to meet the testing requirement of ecchymosis egg.

Table 1 is the experimental result of the present invention

Above-mentioned detailed description of the invention is used for illustrating the present invention, rather than limits the invention, in the spirit and scope of the claims of the present invention, and any amendment that the present invention is made and change, both fall within protection scope of the present invention.

Claims (1)

1. the ecchymosis egg on-line measuring device based on two waveband, it is characterized in that: adopt two waveband method, the light that halogen tungsten lamp is launched passes through egg by lampshade and lens bunchy, detected unit receives, in detection unit, the light beam being polymerized to by lens has respectively enterd two passages by bifurcated optical fiber, one passage is built with the first photodiode, first optical filter, its centre wavelength is 580nm, peak width is the wavelength region light that 10nm and the first pellicle mirror receives 580 �� 10nm, another passage is built with the second photodiode, second optical filter, its centre wavelength is 600nm, peak width is the wavelength region light that 10nm and the second pellicle mirror receives 600 �� 10nm, the differentiation of ecchymosis egg is realized in conjunction with binary Logistic discrimination model at data processing unit,
Described binary Logistic discrimination model, its discriminant value formula is Y=121.9*A-149.361*B-16.028, wherein A is the mean absorbance values of 580 �� 10nm wavelength band, B is the mean absorbance values of 600 �� 10nm wavelength band, when Y>=0, it is judged as normal egg, when Y is<when 0, it is judged that for ecchymosis egg;
Implementing the device of the method, it includes: light source part (1), conveying mechanism (2), detection unit (4) and data processing unit (6); Light source part (1) is arranged on the underface of conveying mechanism (2) by lower carriage arm (28), detection unit (4) is coaxially mounted to the surface of conveying mechanism (2) by upper bracket arm (5), equipped with the conveying mechanism (2) of egg (3) between light source part (1) and detection unit (4), the voltage signal that detection unit (4) produces connects data processing unit (6);
Described light source part (1): include 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), lampshade (13) rear end is equipped with halogen tungsten lamp (12), lens (14) to be equal to the focal length of lens (14) to the distance of halogen tungsten lamp (12), and halogen tungsten lamp (12) side is equipped with fan (29);
Described conveying mechanism (2): include 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 has little axle (25), multiple shape of a saddle conveying rollers (24) are equidistantly mounted on chain (23) by respective little axle (25), 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) with chain (23) translation and under the effect of friction belt (27) uniform rotation, make the egg (3) being placed on adjacent shape of a saddle conveying roller (24) that uniformly upset to occur, track (7) and friction belt (27) all have circular hole (26), the spot size that the diameter of circular hole (26) is formed with light source part (1) is identical, and be just the ultimate range between two shape of a saddle conveying rollers (24), circular hole (26) and light source part (1) and detection unit (4) center being aligned during detection,
Described detection unit (4): for the fan-shaped frame (22) of Y shape, under fan-shaped frame (22), stomidium is built with the 3rd pellicle mirror (16c), in the passage of two jags in fan-shaped frame (22) upper end, first passage (21a) from top to down is sequentially arranged with the first photodiode (20a), first optical filter (19a) and the first pellicle mirror (16a), another passage (21b) from top to down is sequentially arranged with the second photodiode (20b), second optical filter (19b) and the second lens (16b), first pellicle mirror (16a), second pellicle mirror (16b) and the 3rd pellicle mirror (16c) connect bifurcated optical fiber (18) through respective fiber optic connector below respectively, first pellicle mirror (16a) to be equal to the focal length of respective pellicle mirror to the distance of the first photodiode (20a) and the second pellicle mirror (16b) to the distance of the second photodiode (20b),
Described data processing unit (6): include amplifier (9), A/D converter (10) and computer; The voltage signal produced by the first photodiode (20a) and the second photodiode (20b) is changed into digital signal be followed by computer by amplifier (9) and A/D converter (10).
CN201310691480.6A 2013-12-17 2013-12-17 Ecchymosis egg online test method and device based on two waveband CN103698285B (en)

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CN105911000B (en) * 2016-04-15 2018-10-19 华中农业大学 The blood cake egg online test method of feature based wave band

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