JP2000241347A - Method and apparatus for examining egg - Google Patents
Method and apparatus for examining eggInfo
- Publication number
- JP2000241347A JP2000241347A JP11044877A JP4487799A JP2000241347A JP 2000241347 A JP2000241347 A JP 2000241347A JP 11044877 A JP11044877 A JP 11044877A JP 4487799 A JP4487799 A JP 4487799A JP 2000241347 A JP2000241347 A JP 2000241347A
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- Japan
- Prior art keywords
- wavelength
- egg
- intensity
- light
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、卵の内部異常の有
無を非破壊にて検査する方法、及びその実施に使用する
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for non-destructively inspecting an egg for internal abnormalities and an apparatus used for carrying out the method.
【0002】[0002]
【従来の技術】養鶏場で生産される鶏卵には、卵殻内に
小血塊が混入した血班卵、肉用物質が卵白中に浮遊した
又はカラザに絡みついた肉班混入卵等の異常卵が混在し
ているため、食に供する正常卵を出荷すべく、集めた複
数の卵が異常卵であるか否かを非破壊で検査している。2. Description of the Related Art Eggs produced in a poultry farm include abnormal eggs such as blood spot eggs in which small clots are mixed in the eggshell, and eggs mixed with meat spots in which meat substances are suspended in egg white or entangled in karaza. In order to ship normal eggs to be eaten, non-destructive inspection is performed to determine whether or not a plurality of collected eggs are abnormal eggs.
【0003】卵を非破壊で検査するには、検査員が、蛍
光灯等の光源から出射された光内に卵をかざし、目視す
ることによって異常卵であるか否かを判断していた。し
かし、このような検査には熟練した検査員が必要である
一方、熟練した検査員であっても検査作業を長時間行う
ことはできないという問題があった。In order to non-destructively inspect an egg, an inspector holds the egg over light emitted from a light source such as a fluorescent lamp and visually judges whether or not the egg is abnormal. However, while such an inspection requires a skilled inspector, there is a problem that even an experienced inspector cannot perform inspection work for a long time.
【0004】そのため、特公昭56−735 号公報には次の
ような検卵装置が開示されている。投光装置によって卵
に投光し、その透過光を受光装置によって受光する。受
光装置には、受光した光の強度に応じた電気信号を出力
する2つのフォトトランジスタが設けてある。一方のフ
ォトトランジスタの受光部には波長が575nmの光を
透過する光学フィルタが、また他方のフォトトランジス
タの受光部には波長が590nmの光を透過する光学フ
ィルタが配設してあり、卵の透過光は両光学フィルタを
経て対応するフォトトランジスタにそれぞれ入射され、
そこで光電変換される。[0004] Therefore, Japanese Patent Publication No. 56-735 discloses the following egg testing apparatus. Light is emitted to the egg by the light emitting device, and the transmitted light is received by the light receiving device. The light receiving device is provided with two phototransistors that output an electric signal according to the intensity of the received light. An optical filter transmitting light having a wavelength of 575 nm is provided in the light receiving portion of one phototransistor, and an optical filter transmitting light having a wavelength of 590 nm is provided in the light receiving portion of the other phototransistor. The transmitted light is incident on the corresponding phototransistor through both optical filters, respectively.
There, photoelectric conversion is performed.
【0005】一方のフォトトランジスタから出力された
第1信号、及び他方のフォトトランジスタから出力され
た第2信号は演算装置に与えられる。演算装置は、第1
信号を第2信号で除算することによって第1信号を正規
化し、正規化信号のレベルが予め定めたレベル以下であ
る場合、血班卵であると判定する。[0005] The first signal output from one phototransistor and the second signal output from the other phototransistor are provided to an arithmetic unit. The arithmetic unit is the first
The first signal is normalized by dividing the signal by the second signal. If the level of the normalized signal is equal to or less than a predetermined level, it is determined that the egg is a blood spot egg.
【0006】このように、白色又は褐色等、卵殻の色に
よって変化する590nmの透過光の強度によって、血
塊に吸収される575nmの透過光の強度を正規化する
ため、卵殻の色の影響を低減することができる。[0006] As described above, the intensity of the transmitted light of 575 nm absorbed by the blood clot is normalized by the intensity of the transmitted light of 590 nm that changes depending on the color of the eggshell, such as white or brown, so that the influence of the color of the eggshell is reduced. can do.
【0007】[0007]
【発明が解決しようとする課題】しかしながら、特公昭
56−735 号公報に開示された検卵装置にあっては、前述
した如く、正規化信号のレベルが予め定めたレベル以下
である場合、血班卵であると判定するため、微小な血塊
が混入していた場合、正規化信号のレベルがさほど低く
ないので、これを見落とす虞があった。また、575n
mの透過光の強度は卵のサイズ(透過光路長)及び卵殻
の色の濃淡によっても変化するため、異常卵検出の精度
が低いという問題もあった。[Problems to be solved by the invention]
In the egg test apparatus disclosed in JP-A-56-735, as described above, when the level of the normalized signal is equal to or lower than a predetermined level, it is determined that the egg is a bloody egg, so that a minute clot is formed. If they are mixed, the level of the normalized signal is not so low, and there is a risk of overlooking this. 575n
Since the intensity of the transmitted light of m also changes depending on the size of the egg (transmitted light path length) and the shade of the color of the eggshell, there is also a problem that the accuracy of abnormal egg detection is low.
【0008】本発明はかかる事情に鑑みてなされたもの
であって、その目的とするところは卵の透過光を用い
て、卵の内部異常による吸収が大きい第1波長の強度、
卵殻の種類によって吸収が異なる第2波長の強度、及び
内部異常による吸収が小さい第3波長の強度を測定し、
得られた第3波長の強度及び第1波長の強度を第2波長
の強度によってそれぞれ正規化し、正規化した第1波長
の強度及び第3波長の強度の差分を算出し、得られた差
分に基づいて卵が内部異常であるか否かを判断すること
によって、卵のサイズ及び卵殻の色の濃淡に拘わらず、
高精度に異常卵を検出することができる検卵方法、及び
その実施に使用する装置を提供することにある。The present invention has been made in view of the above circumstances, and has as its object to use the transmitted light of an egg to obtain an intensity of a first wavelength which is largely absorbed by an internal abnormality of the egg.
Measure the intensity of the second wavelength where absorption differs depending on the type of eggshell, and the intensity of the third wavelength where absorption due to internal abnormalities is small,
The obtained intensity of the third wavelength and the intensity of the first wavelength are normalized by the intensity of the second wavelength, respectively, and the difference between the normalized intensity of the first wavelength and the intensity of the third wavelength is calculated. By determining whether the egg is internal abnormal or not based on the size of the egg and the color of the eggshell,
An object of the present invention is to provide an egg test method capable of detecting an abnormal egg with high accuracy, and an apparatus used for carrying out the method.
【0009】[0009]
【課題を解決するための手段】第1発明に係る検卵方法
は、光源から所要波長を含む光を卵に照射して透過光を
得、その透過光を用いて、卵の内部異常による吸収が大
きい第1波長の強度、及び前記卵殻の種類によって吸収
が異なる第2波長の強度をそれぞれ測定し、得られた第
1波長の強度及び第2波長の強度に基づいて、卵の内部
異常を検出する検卵方法において、前記透過光を用い
て、前記内部異常による吸収が小さい第3波長の強度を
測定し、得られた第3波長の強度及び前記第1波長の強
度を前記第2波長の強度によってそれぞれ正規化し、正
規化した第1波長の強度及び第3波長の強度の差分を算
出し、得られた差分に基づいて前記卵が内部異常である
か否かを判断することを特徴とする。According to a first aspect of the present invention, there is provided a method for detecting an egg, wherein the egg is irradiated with light having a required wavelength from a light source to obtain transmitted light, and the transmitted light is used to absorb the egg due to an internal abnormality of the egg. The intensity of the first wavelength is large, and the intensity of the second wavelength, the absorption of which differs depending on the type of the eggshell, is measured. Based on the obtained intensity of the first wavelength and the intensity of the second wavelength, the internal abnormality of the egg is determined. In the egg detection method for detecting, the transmitted light is used to measure the intensity of the third wavelength having a small absorption due to the internal abnormality, and the obtained intensity of the third wavelength and the intensity of the first wavelength are converted to the second wavelength. And a difference between the normalized first and third wavelength intensities is calculated, and it is determined whether the egg has an internal abnormality based on the obtained difference. And
【0010】第2発明に係る検卵装置は、所要波長を含
む光を卵に照射して得た透過光に含まれ、卵の内部異常
による吸収が大きい第1波長の強度を測定する測定部
と、前記透過光を用いて、前記卵殻の種類によって吸収
が異なる第2波長の強度を測定する測定部と、得られた
第1波長の強度及び第2波長の強度に基づいて、卵の内
部異常を検出する検出器とを備える検卵装置において、
前記透過光を用いて、前記内部異常による吸収が小さい
第3波長の強度を測定する測定部を備え、前記検出器
は、該第3強度及び前記第1強度を前記第2強度によっ
てそれぞれ正規化する手段と、正規化した第1強度及び
第3強度の差分を算出する手段とを具備することを特徴
とする。[0010] The egg inspection apparatus according to the second invention is a measuring section for measuring the intensity of the first wavelength included in the transmitted light obtained by irradiating the egg with light having a required wavelength and having a large absorption due to an internal abnormality of the egg. And a measurement unit that measures the intensity of the second wavelength having different absorption depending on the type of the eggshell using the transmitted light, and the inside of the egg based on the obtained intensity of the first wavelength and the intensity of the second wavelength. In an egg inspection apparatus including a detector that detects an abnormality,
A measuring unit that measures an intensity of a third wavelength having a small absorption due to the internal abnormality using the transmitted light; and the detector normalizes the third intensity and the first intensity by the second intensity, respectively. And means for calculating the difference between the normalized first and third intensities.
【0011】ランプ又は自然光等の光源から所要波長を
含む光を卵に照射して透過光を得、その透過光を用い
て、卵の内部異常による吸収が大きい第1波長の強度、
卵殻の種類によって吸収が異なる第2波長の強度、及び
前記内部異常による吸収が小さい第3波長の強度を測定
する。[0011] The egg is irradiated with light containing a required wavelength from a light source such as a lamp or natural light to obtain transmitted light, and the transmitted light is used to obtain an intensity of a first wavelength, which is greatly absorbed by an abnormality inside the egg.
The intensity of the second wavelength having different absorption depending on the type of eggshell and the intensity of the third wavelength having small absorption due to the internal abnormality are measured.
【0012】図2は、血液の吸収スペクトルと複数の卵
の透過度の変動係数とを示すグラフであり、図中、左側
縦軸は吸光度を、右側縦軸は光透過度の変動係数(標準
偏差/平均値)を、また横軸は波長をそれぞれ示してい
る。また、図中、a線は血液の吸収スペクトルを、b線
は複数の波長に対する光透過度の変動係数をそれぞれ示
している。FIG. 2 is a graph showing the absorption spectrum of blood and the coefficient of variation of the transmittance of a plurality of eggs. In the figure, the left vertical axis represents the absorbance, and the right vertical axis represents the variation coefficient of the light transmittance (standard). Deviation / average value), and the horizontal axis represents wavelength. In the figure, line a shows the absorption spectrum of blood, and line b shows the variation coefficient of light transmittance for a plurality of wavelengths.
【0013】図2に示したa線から明らかな如く、血液
の吸光度は540nm付近及び575nm付近に極大値
を、また560nm付近に極小値をそれぞれ有してお
り、610nmより長波長側では、血液による吸収はほ
とんどない。また、b線から明らかな如く、色の濃淡及
びサイズが異なる複数の卵の光透過度の変動係数は、血
液による吸収がほんどない645nmで大きい。As is apparent from the line a shown in FIG. 2, the blood absorbance has a maximum value near 540 nm and 575 nm, and a minimum value near 560 nm, and the blood absorbance at a wavelength longer than 610 nm. There is almost no absorption. Further, as is clear from the b-line, the coefficient of variation of the light transmittance of a plurality of eggs having different shades and sizes of color is large at 645 nm, where there is almost no absorption by blood.
【0014】従って、内部異常が血塊である場合、前述
した第2波長は645nm付近とし、第3波長は560
nm付近とする。また、第1波長は、検出感度が高い5
75nm付近とする。Therefore, when the internal abnormality is a blood clot, the above-mentioned second wavelength is set to around 645 nm and the third wavelength is set to 560 nm.
nm. Further, the first wavelength has a high detection sensitivity 5.
It is set to around 75 nm.
【0015】なお、第1乃至第3波長の強度は、透過光
を分光し、各波長の強度を測定してもよいし、また各波
長を通過させる光学フィルタに透過光を入射し、その通
過光の強度を測定してもよい。The intensity of the first to third wavelengths may be measured by dispersing the transmitted light and measuring the intensity of each wavelength. Alternatively, the transmitted light may be incident on an optical filter that transmits each wavelength, The light intensity may be measured.
【0016】このようにして得られた第3波長の強度及
び第1波長の強度を、例えば第2波長の強度によってそ
れぞれ除算することによってそれぞれ正規化し、正規化
した第1波長の強度及び第3波長の強度の差分を算出
し、得られた差分が予め設定した値より小さい場合、異
常卵であると判定する。The intensity of the third wavelength and the intensity of the first wavelength obtained in this way are normalized by, for example, respectively dividing by the intensity of the second wavelength, and the normalized intensity of the first wavelength and the intensity of the third wavelength are respectively divided. The difference between the wavelength intensities is calculated, and if the obtained difference is smaller than a preset value, it is determined that the egg is abnormal.
【0017】このように、内部異常による吸収が大きい
第1波長の強度、及び内部異常による吸収が小さい第3
波長の強度を、卵のサイズ及び卵殻の色の濃淡によって
吸収が異なる第2波長の強度によって正規化するため、
卵のサイズ及び卵殻の色の濃淡の影響を低減することが
できる。更に、正規化した第1波長の強度及び第3波長
の強度の差分を求めるため、卵のサイズ及び卵殻の色の
濃淡の影響を更に低減して、内部異常の存否を正確に判
断することがきる。これによって、卵殻の色の濃淡及び
卵のサイズに拘わらず、微少な内部異常を検出すること
ができ、異常卵を高精度に検出することができる。As described above, the intensity of the first wavelength at which absorption due to the internal abnormality is large, and the intensity of the third wavelength at which absorption due to the internal abnormality is small
In order to normalize the intensity of the wavelength by the intensity of the second wavelength, the absorption of which depends on the size of the egg and the shade of the eggshell,
The effects of egg size and shade of eggshell color can be reduced. Furthermore, in order to obtain the difference between the normalized intensity of the first wavelength and the intensity of the third wavelength, the influence of the size of the egg and the shade of the color of the eggshell can be further reduced, and the presence or absence of an internal abnormality can be accurately determined. Wear. Thereby, regardless of the shade of the color of the eggshell and the size of the egg, a minute internal abnormality can be detected, and the abnormal egg can be detected with high accuracy.
【0018】[0018]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて具体的に説明する。図1は、本発明に係る検
卵装置の構成を示すブロック図であり、図中、6は、ハ
ロゲンランプ等、500nm〜700nmの波長を含む
光を出射する光源である。光源6から所定距離を隔てて
リフレクタ7が配置してあり、光源6から放射された光
及びリフレクタ7によって反射された光は第1レンズ11
に入射される。第1レンズ11は入射された光を卵Eの断
面面積と略同じ断面面積の平行光とし、該第1レンズ11
に対向配置した第2レンズ12へ出射する。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of an egg test apparatus according to the present invention. In the figure, reference numeral 6 denotes a light source such as a halogen lamp that emits light having a wavelength of 500 nm to 700 nm. A reflector 7 is disposed at a predetermined distance from the light source 6, and the light emitted from the light source 6 and the light reflected by the reflector 7 are transmitted through the first lens 11.
Is incident on. The first lens 11 converts the incident light into parallel light having substantially the same cross-sectional area as the cross-sectional area of the egg E.
The light exits to the second lens 12 disposed to face the lens.
【0019】第1レンズ11と第2レンズ12との間に卵E
が配置されおり、卵Eを透過した透過光は第2レンズ12
で集光される。第2レンズ12から出射された光の光路に
は、第1及び第2ハーフミラー21,22が適宜距離を隔て
て、光路に対して所定の角度になるように配置してあ
り、第1ハーフミラー21によって反射された光は、例え
ば、血塊による吸収が大きい575nm付近の波長の光
を通過させる第1バンドパスフィルタ31を介して、第1
光電変換器41に入射される。An egg E is provided between the first lens 11 and the second lens 12.
Is disposed, and the transmitted light transmitted through the egg E is transmitted through the second lens 12.
The light is focused. In the optical path of the light emitted from the second lens 12, first and second half mirrors 21 and 22 are arranged at an appropriate distance from each other and at a predetermined angle with respect to the optical path. The light reflected by the mirror 21 passes through the first band-pass filter 31 that passes light having a wavelength near 575 nm, which is largely absorbed by the blood clot, for example.
The light enters the photoelectric converter 41.
【0020】第1ハーフミラー21を通過し、第2ハーフ
ミラー22によって反射された光は、卵殻の色によって吸
収が異なる645nm付近の波長の光を通過させる第2
バンドパスフィルタ32を介して、第2光電変換器42に入
射され、第1ハーフミラー21及び第2ハーフミラー22を
通過した光は、血塊による吸収が小さい560nm付近
の波長の光を通過させる第3バンドパスフィルタ33を介
して、第3光電変換器43に入射される。The light passing through the first half mirror 21 and reflected by the second half mirror 22 passes light having a wavelength of about 645 nm, whose absorption varies depending on the color of the eggshell.
The light incident on the second photoelectric converter 42 via the band-pass filter 32 and passing through the first half mirror 21 and the second half mirror 22 passes light having a wavelength of about 560 nm, which is less absorbed by the blood clot. The light enters the third photoelectric converter 43 via the three-bandpass filter 33.
【0021】なお、第1ハーフミラー21及び第2ハーフ
ミラー22は、第1ハーフミラー21によって反射された光
の強度、第1ハーフミラー21を通過し、第2ハーフミラ
ー22によって反射された光の強度、並びに第1ハーフミ
ラー21及び第2ハーフミラー22を通過した光の強度はそ
れぞれ同じ値になるようになしてある。The first half mirror 21 and the second half mirror 22 have the intensity of the light reflected by the first half mirror 21 and the light reflected by the second half mirror 22 after passing through the first half mirror 21. And the intensities of the light passing through the first half mirror 21 and the second half mirror 22 have the same value.
【0022】第1〜第3光電変換器41〜43は、入射光を
その強度に応じた電気信号に変換し、得られた電気信号
をアナログ/ディジタル変換器9,9,9を介して、演
算装置1の正規化部2にそれぞれ与える。正規化部2
は、第1光電変換器41から与えられた第1信号を、第2
光電変換器42から与えられた第2信号で除算すると共
に、第3光電変換器43から与えられた第3信号を前記第
2信号で除算することによって、第1信号及び第3信号
から卵殻による影響を除去する正規化処理を行い、正規
化した第1信号及び第3信号を差分算出部3に与える。The first to third photoelectric converters 41 to 43 convert the incident light into electric signals corresponding to the intensity of the incident light, and convert the obtained electric signals via analog / digital converters 9, 9 and 9, It is given to the normalization unit 2 of the arithmetic unit 1, respectively. Normalization unit 2
Converts the first signal provided from the first photoelectric converter 41 into the second signal
By dividing by the second signal given from the photoelectric converter 42 and dividing the third signal given from the third photoelectric converter 43 by the second signal, the eggshell is obtained from the first signal and the third signal. Normalization processing for removing the influence is performed, and the normalized first signal and third signal are given to the difference calculation unit 3.
【0023】差分算出部3は、第3信号から第1信号を
減じて両者の差分を算出し、それを判定部4に与える。
判定部4には、卵の良否を判定する閾値が予め設定して
あり、判定部4は与えられた差分と閾値とを比較し、閾
値以下である場合、異常卵であると判定して信号を出力
する。The difference calculation section 3 calculates the difference between the third signal and the first signal by subtracting the first signal from the third signal, and supplies the difference to the determination section 4.
In the determination unit 4, a threshold value for determining the quality of the egg is set in advance, and the determination unit 4 compares the given difference with the threshold value. If the difference is equal to or less than the threshold value, the determination unit 4 determines that the egg is abnormal and outputs a signal. Is output.
【0024】なお、本実施の形態では、血塊による吸収
が大きい575nm付近の波長の光を通過させる第1バ
ンドパスフィルタ31を介して得た第1信号を用いて卵E
を検査しているが、本発明はこれに限らず、第1信号に
代えて、又は第1信号に加えて、肉用物質又は卵白の濁
度等、他の内部異常に応じた波長の光を通過させるバン
ドパスフィルタを介して得た信号を用いて卵Eを検査す
るようになしてもよい。この場合、得られた信号を前述
した第2信号を用いて正規化し、正規化した信号と、正
規化した第3信号又は、当該内部異常による吸収が小さ
い他の波長の光を光電変換し、正規化した信号との差分
を求める。これによって、卵殻の種類及び卵のサイズに
拘わらず、微少な内部異常を検出することができ、異常
卵を高精度に検査することができる。In the present embodiment, the egg E is obtained by using the first signal obtained through the first band-pass filter 31 that passes light having a wavelength of about 575 nm, which is largely absorbed by the blood clot.
However, the present invention is not limited to this, and instead of or in addition to the first signal, light having a wavelength corresponding to other internal abnormalities such as meat substance or egg white turbidity is used. The egg E may be inspected using a signal obtained through a band-pass filter that passes through the egg E. In this case, the obtained signal is normalized using the above-described second signal, and the normalized signal and the normalized third signal or the light of another wavelength whose absorption due to the internal abnormality is small are photoelectrically converted, Find the difference from the normalized signal. Thereby, regardless of the type of the eggshell and the size of the egg, a minute internal abnormality can be detected, and the abnormal egg can be inspected with high accuracy.
【0025】[0025]
【実施例】次に比較試験を行った結果について説明す
る。図4は、特公昭56−735 号公報に開示された装置に
よって正常卵及び血塊が混入した異常卵を検査した結果
を示すグラフであり、縦軸は第2信号で正規化した第1
信号のレベルを示している。この場合、第1信号は、5
75nmの光を通過する光学フィルタを用いて得、第2
信号は、590nmの光を透過する光学フィルタを用い
て得た。Next, the results of a comparative test will be described. FIG. 4 is a graph showing the results of inspection of normal eggs and abnormal eggs mixed with blood clots using the apparatus disclosed in Japanese Patent Publication No. 56-735, with the vertical axis representing the first signal normalized by the second signal.
The signal level is shown. In this case, the first signal is 5
Obtained using an optical filter that passes light of 75 nm,
The signal was obtained using an optical filter transmitting 590 nm light.
【0026】また、図5は、第2信号を得るための光学
フィルタの通過波長を異ならせた従来の装置によって正
常卵及び血塊が混入した異常卵を検査した結果を示すグ
ラフである。この場合、第1信号は、575nmの光を
通過する光学フィルタを用いて得、第2信号は、645
nmの光を透過する光学フィルタを用いて得た。FIG. 5 is a graph showing the results of inspection of normal eggs and abnormal eggs mixed with blood clots by a conventional apparatus in which the passing wavelength of an optical filter for obtaining the second signal is changed. In this case, the first signal is obtained using an optical filter that passes light of 575 nm, and the second signal is
Obtained using an optical filter that transmits light of nm.
【0027】一方、図3は、本発明装置によって正常卵
及び血塊が混入した異常卵を検査した結果を示すグラフ
であり、縦軸は第2信号で正規化した第1信号と第2信
号で正規化した第3信号との差分レベルを示している。
本発明装置では、575nmの光を通過する光学フィル
タを用いて第1信号を得、645nmの光を通過する光
学フィルタを用いて第2信号を得、560nmの光を通
過する光学フィルタを用いて第3信号を得た。On the other hand, FIG. 3 is a graph showing the results of inspection of normal eggs and abnormal eggs mixed with blood clots by the apparatus of the present invention. The vertical axis represents the first signal and the second signal normalized by the second signal. The level of difference from the normalized third signal is shown.
In the apparatus of the present invention, a first signal is obtained by using an optical filter that transmits light of 575 nm, a second signal is obtained by using an optical filter that transmits light of 645 nm, and an optical filter that transmits light of 560 nm is obtained. A third signal was obtained.
【0028】図4及び図5から明らかな如く、従来の装
置では、第2信号を得るための光学フィルタの通過波長
に拘わらず、正常卵の検査結果の一部と異常卵の検査結
果の一部とが重なっており、これによって誤検出又は異
常卵の見逃しが発生する。一方、図3から明らかな如
く、本発明装置では、正常卵の検査結果と異常卵の検査
結果とは重なっておらず、例えば、閾値を0.10に定
めておくことによって、異常卵を高精度に検出すること
ができる。As is clear from FIGS. 4 and 5, in the conventional apparatus, a part of the test result of the normal egg and one of the test results of the abnormal egg are obtained regardless of the passing wavelength of the optical filter for obtaining the second signal. This causes false detection or overlooking of abnormal eggs. On the other hand, as is clear from FIG. 3, in the apparatus of the present invention, the test result of the normal egg and the test result of the abnormal egg do not overlap, and for example, by setting the threshold value to 0.10. It can be detected with high accuracy.
【0029】[0029]
【発明の効果】以上詳述した如く、本発明にあっては、
卵殻の種類及び卵のサイズに拘わらず、微少な内部異常
を検出することができ、卵の良否を高精度に検査するこ
とができる等、本発明は優れた効果を奏する。As described in detail above, in the present invention,
The present invention has excellent effects, such as being able to detect minute internal abnormalities regardless of the type of eggshell and the size of the eggs and to inspect the quality of the eggs with high accuracy.
【図1】本発明に係る検卵装置の構成を示すブロック図
である。FIG. 1 is a block diagram showing a configuration of an egg inspection apparatus according to the present invention.
【図2】血液の吸収スペクトルと複数の卵の透過度の変
動係数とを示すグラフである。FIG. 2 is a graph showing an absorption spectrum of blood and a coefficient of variation of transmittance of a plurality of eggs.
【図3】本発明装置によって正常卵及び血塊が混入した
異常卵を検査した結果を示すグラフである。FIG. 3 is a graph showing a result of inspection of a normal egg and an abnormal egg mixed with a blood clot by the device of the present invention.
【図4】特公昭56−735 号公報に開示された装置によっ
て正常卵及び血塊が混入した異常卵を検査した結果を示
すグラフである。FIG. 4 is a graph showing the results of inspection of normal eggs and abnormal eggs mixed with blood clots using the apparatus disclosed in Japanese Patent Publication No. 56-735.
【図5】第2信号を得るための光学フィルタの通過波長
を異ならせた従来の装置によって正常卵及び血塊が混入
した異常卵を検査した結果を示すグラフである。FIG. 5 is a graph showing a result of examining a normal egg and an abnormal egg mixed with a blood clot by a conventional device in which a passing wavelength of an optical filter for obtaining a second signal is changed.
1 演算装置 2 正規化部 3 差分算出部 4 判定部 6 光源 21 第1ハーフミラー 22 第2ハーフミラー 31 第1バンドパスフィルタ 32 第2バンドパスフィルタ 33 第3バンドパスフィルタ 41 第1光電変換器 42 第2光電変換器 43 第3光電変換器 Reference Signs List 1 arithmetic unit 2 normalization unit 3 difference calculation unit 4 determination unit 6 light source 21 first half mirror 22 second half mirror 31 first bandpass filter 32 second bandpass filter 33 third bandpass filter 41 first photoelectric converter 42 2nd photoelectric converter 43 3rd photoelectric converter
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2G051 AA90 AB20 BA20 CA07 CB02 CC07 EA08 EA12 EB01 EB02 EC03 2G059 AA05 BB11 CC20 DD13 EE01 FF06 GG10 HH02 HH06 JJ03 JJ11 JJ14 JJ22 KK03 MM01 MM05 MM09 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G051 AA90 AB20 BA20 CA07 CB02 CC07 EA08 EA12 EB01 EB02 EC03 2G059 AA05 BB11 CC20 DD13 EE01 FF06 GG10 HH02 HH06 JJ03 JJ11 JJ14 JJ22 KK03 MM01 MM05 MM09
Claims (2)
て透過光を得、その透過光を用いて、卵の内部異常によ
る吸収が大きい第1波長の強度、及び前記卵殻の種類に
よって吸収が異なる第2波長の強度をそれぞれ測定し、
得られた第1波長の強度及び第2波長の強度に基づい
て、卵の内部異常を検出する検卵方法において、 前記透過光を用いて、前記内部異常による吸収が小さい
第3波長の強度を測定し、得られた第3波長の強度及び
前記第1波長の強度を前記第2波長の強度によってそれ
ぞれ正規化し、正規化した第1波長の強度及び第3波長
の強度の差分を算出し、得られた差分に基づいて前記卵
が内部異常であるか否かを判断することを特徴とする検
卵方法。An egg is illuminated with light having a required wavelength from a light source to obtain transmitted light, and the transmitted light is used to determine the intensity of the first wavelength, which is largely absorbed by an internal abnormality of the egg, and the type of the eggshell. The intensity of the second wavelength having different absorption is measured,
In the egg detection method for detecting an internal abnormality of an egg based on the obtained intensity of the first wavelength and the intensity of the second wavelength, the intensity of the third wavelength having a small absorption due to the internal abnormality is reduced using the transmitted light. Measured, the intensity of the obtained third wavelength and the intensity of the first wavelength are normalized by the intensity of the second wavelength, respectively, and the difference between the normalized intensity of the first wavelength and the intensity of the third wavelength is calculated. An egg inspection method comprising: determining whether the egg has an internal abnormality based on the obtained difference.
過光に含まれ、卵の内部異常による吸収が大きい第1波
長の強度を測定する測定部と、前記透過光を用いて、前
記卵殻の種類によって吸収が異なる第2波長の強度を測
定する測定部と、得られた第1波長の強度及び第2波長
の強度に基づいて、卵の内部異常を検出する検出器とを
備える検卵装置において、 前記透過光を用いて、前記内部異常による吸収が小さい
第3波長の強度を測定する測定部を備え、前記検出器
は、該第3強度及び前記第1強度を前記第2強度によっ
てそれぞれ正規化する手段と、正規化した第1強度及び
第3強度の差分を算出する手段とを具備することを特徴
とする検卵装置。2. A measuring unit for measuring an intensity of a first wavelength included in transmitted light obtained by irradiating an egg with light having a required wavelength and having a large absorption due to an internal abnormality of the egg, and using the transmitted light. A measuring unit that measures the intensity of the second wavelength having different absorption depending on the type of the eggshell, and a detector that detects an internal abnormality of the egg based on the obtained intensity of the first wavelength and the intensity of the second wavelength. An egg test apparatus comprising: a measuring unit configured to measure, using the transmitted light, an intensity of a third wavelength having a small absorption due to the internal abnormality, wherein the detector measures the third intensity and the first intensity by the second intensity. An egg inspection apparatus, comprising: means for normalizing each of the two intensities; and means for calculating a difference between the normalized first and third intensities.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04487799A JP3541291B2 (en) | 1999-02-23 | 1999-02-23 | Egg test method and egg test device |
EP00904090A EP1074831A4 (en) | 1999-02-23 | 2000-02-21 | Method and device for candling eggs |
KR1020007011745A KR20010042925A (en) | 1999-02-23 | 2000-02-21 | Egg inspecting method and egg inspecting device |
PCT/JP2000/000998 WO2000050873A1 (en) | 1999-02-23 | 2000-02-21 | Method and device for candling eggs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04487799A JP3541291B2 (en) | 1999-02-23 | 1999-02-23 | Egg test method and egg test device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000241347A true JP2000241347A (en) | 2000-09-08 |
JP3541291B2 JP3541291B2 (en) | 2004-07-07 |
Family
ID=12703734
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JP04487799A Expired - Fee Related JP3541291B2 (en) | 1999-02-23 | 1999-02-23 | Egg test method and egg test device |
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JP2008032678A (en) | 2006-06-29 | 2008-02-14 | Naberu:Kk | Egg quality index inspection apparatus |
JP2009145145A (en) * | 2007-12-13 | 2009-07-02 | Dkk Toa Corp | Light diesel oil identifying method and light diesel oil monitor |
JP2011106892A (en) * | 2009-11-14 | 2011-06-02 | Naberu:Kk | Hatching egg examination device |
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JP2008032678A (en) | 2006-06-29 | 2008-02-14 | Naberu:Kk | Egg quality index inspection apparatus |
JP2009145145A (en) * | 2007-12-13 | 2009-07-02 | Dkk Toa Corp | Light diesel oil identifying method and light diesel oil monitor |
JP2011106892A (en) * | 2009-11-14 | 2011-06-02 | Naberu:Kk | Hatching egg examination device |
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JP2018510334A (en) * | 2015-02-25 | 2018-04-12 | アウトセンス ダイアグノスティクス リミテッド | Analysis of human excreta |
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KR20170122228A (en) * | 2015-02-25 | 2017-11-03 | 아웃센스 다이아그나스틱스 엘티디. | Analysis of body emissions |
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