JP2004325071A - In-vessel bubble decision method and device therefor - Google Patents

In-vessel bubble decision method and device therefor Download PDF

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JP2004325071A
JP2004325071A JP2003115584A JP2003115584A JP2004325071A JP 2004325071 A JP2004325071 A JP 2004325071A JP 2003115584 A JP2003115584 A JP 2003115584A JP 2003115584 A JP2003115584 A JP 2003115584A JP 2004325071 A JP2004325071 A JP 2004325071A
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container
reflected light
transmitted light
light
bubble
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JP4163039B2 (en
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Shigeru Sato
茂 佐藤
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M I L KK
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M I L KK
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Abstract

<P>PROBLEM TO BE SOLVED: To accurately distinguish a bubble mixed into a liquid vessel. <P>SOLUTION: In this in-vessel bubble decision method, by imparting an intensity difference to transmitting light 2a and reflected light 3a on the same optical axis irradiated on the vessel from opposite positions sandwiching the sealed transparent or semitransparent vessel with a liquid, suspended matter inside the vessel wherein an outside portion f (a first portion) recognized in a high luminance and an inside portion i (a second portion) recognized in a low luminance are mixed is confirmed, and it is decided that the suspended matter is the bubble if magnitude relation of the luminance between the outside portion and the inside portion of the suspended matter reverses when reversing intensity relation between the transmitting light and the reflected light. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、液体が封入された透明又は半透明の容器に光を照射して容器内の気泡を判定する方法及び装置に関する。
【０００２】
【従来の技術】
例えば、点滴パック等の液体充填容器内の気泡を判定する方法として本出願人により出願され公開された方法が知られている。この方法では、容器に透過光と反射光を照射して輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在している容器内浮遊物の全体が高輝度に表出されるように透過光と反射光の光量を調整することで、全体が高輝度に表出された浮遊物を気泡と判定する（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開２００１−１１６７０３号公報
【０００４】
【発明が解決しようとする課題】
特許文献１の方法によれば、気泡全体を高輝度に表出させるために透過光と反射光の光量を調整しなければならず、面倒であった。また、容器内にプラスチック粉が混入している場合、このプラスチック粉が混入しているものは不良品として排除しなければならないが、特許文献１の方法では、プラスチック粉も常に薄い輝度で明るく表出されるので、液体容器内に混入している気泡とプラスチック粉とを正確に判別することができないという課題があった。
本発明は、液体容器内に混入する気泡を簡単かつ正確に判別できる方法及び装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明の容器内気泡判定方法は、液体が封入された透明または半透明の容器を挟んで相対向する位置から容器に照射する同一光軸の透過光と反射光とに強弱差を付けることにより、輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在している容器内浮遊物を確認し、その後、透過光と反射光の強弱関係を逆転させた場合に上記浮遊物の第１部分と第２部分の輝度の高低関係が反転したならば当該浮遊物を気泡であると判定する。
本発明の容器内気泡判定装置は、液体が封入された透明または半透明の容器を挟んで相対向する一方の位置に透過光発生部を備えるとともに他方の位置に反射光発生部を備え、透過光発生部は所定時間毎に容器に照射する強い透過光と弱い透過光とを交互に発生するものであり、反射光発生部は透過光と同一光軸の反射光を発生するものであって、透過光発生部が強い透過光を発生している時には弱い反射光を発生し、透過光発生部が弱い透過光を発生している時には強い反射光を発生するものであり、さらに、透過光及び反射光が照射される容器内浮遊物の画像を撮像して画像フレーム又はフィールド毎の画像信号を出力する検査カメラと、時間的に連続する画像フレーム間又はフィールド間の画像信号を比較し、輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在していた容器内浮遊物の第１部分と第２部分の輝度の高低関係が反転したことを検出した場合に当該浮遊物を気泡であると判定する判定手段とを備えた。
【０００６】
【発明の実施の形態】
本発明による気泡判定装置は、例えば、点滴パック、ガラス製，プラスチック製等の医薬品容器、飲料容器、工業液体収容パック等の容器の良品及び不良品の選別検査をする際に用いるものである。容器には各種用途に応じた液体が充填されて使用されるものであるが、液体充填時において、空気が混入したり、容器あるいは液体注入手段等に付着する各種浮遊物が混入してしまう場合がある。この浮遊物としては、気泡のほかに、虫、塵埃、毛、プラスチック粉等の異物が想定される。そして、気泡については容器内に浮遊していても製品の品質には全く影響がないが、仮に上記異物が混入している容器については不良品として製品から排除する必要がある。本発明の気泡判定装置によれば、製品の品質に影響のない気泡を正確に判別でき、良品と不良品とを正確に峻別できるようになる。
【０００７】
図１は本発明の実施の形態による容器内気泡判定方法に使用する容器内気泡判定装置の構成図である。
図１に示すように、実施の形態による容器内気泡判定装置は、液体が封入された透明または半透明の容器１を挟んで相対向する位置から同一光軸の透過光２ａと反射光３ａとを容器１に照射するために、上記相対向する一方の位置に設けられた透過光発生部と、上記相対向する他方の位置に設けられた反射光発生部と、透過光２ａ及び反射光３ａが照射される容器１内浮遊物の画像を撮像して画像フレーム又はフィールド毎の画像信号を出力する検査デジタルカメラＫと、時間的に連続する画像フレーム間又はフィールド間の画像信号を比較し、輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在していた容器１内浮遊物の第１部分と第２部分の輝度の高低関係が反転したことを検出した場合に当該浮遊物を気泡であると判定するコンピュータ等による判定手段Ｐとを備える。
【０００８】
透過光発生部は、所定時間毎に強い透過光と弱い透過光を交互に発生するものであり、反射光発生部は、透過光発生部が強い透過光を発生している時には弱い反射光を発生して、透過光発生部が弱い透過光を発生している時には強い反射光を発生するものである。
透過光発生部は、例えば、ストロボ光源２により構成される。
反射光発生部は、例えば、ストロボ光源３と、このストロボ光源３からの光を反射して透過光２ａとは反対側から当該透過光２ａの光軸と同一光軸の反射光３ａを容器１に照射するハーフミラー４とにより構成される。
【０００９】
尚、５はシェーディング（画面の輝度ムラ）を防止するための拡散板、６は容器１内に流れを誘発して気泡と異物とに動きを誘発する動作誘発手段である。この動作誘発手段６としては、例えば、容器１を回転させることにより容器１内に流れを誘発させる構成とすることができる。このため、例えば、この動作誘発手段６は容器１の上下部を掴む把持部６ａとこの把持部６ａを図示のように水平方向へ回転自在に支持する支持棒６ｂとから構成することができる。これにより容器１内には気泡及び異物を水平方向へ回転させる流れが生じる。この動作誘発手段６は容器１を回転させる以外に、容器１を上，下あるいは左，右に振るようにして、流れを誘発するものであってもよい。
【００１０】
次に実施の形態の容器内気泡判定装置による判定方法について図１及び図２に基づき説明する。
動作誘発手段６により容器１内に流れを誘発させ、透過光用のストロボ光源２及び反射光用のストロボ光源３の電源を投入する。すると、ストロボ光源２，３は所定時間毎に強い光を発生する状態と弱い光を発生する状態を交互に繰り返す。ここで、ストロボ光源２，３は強い光を発生するタイミングと弱い光を発生するタイミングが逆になっている。即ち、透過光用のストロボ光源２が強い透過光を発生している時には反射光用のストロボ光源３は弱い反射光を発生し、透過光用のストロボ光源２が弱い透過光を発生している時には反射光用のストロボ光源３は強い反射光を発生するようになっている。
【００１１】
図２は、容器１内に浮遊する気泡Ａ及び異物Ｂに透過光２ａ及び反射光３ａが照射された場合の光学的状態を示す。
例えば、図２（１）（ア）に示すように、透過光用のストロボ光源２が強い透過光２ａを発生し、反射光用のストロボ光源３が弱い反射光３ａを発生している状態においては、図２（１）（イ）に示すように、同一光軸の透過光２ａ及び反射光３ａが照射される気泡Ａの外側部分ｆは透過光２ａによって白く光って輝度が高く認識されるが、気泡Ａの内側部分ｉは透過光２ａによる影となって暗くなり、輝度が低い状態に認識される。
次に、図２（２）（ア）に示すように、透過光用のストロボ光源２が弱い透過光２ａを発生し、反射光用のストロボ光源３が強い反射光３ａを発生している状態においては、図２（２）（イ）に示すように、同一光軸の透過光２ａ及び反射光３ａが照射される気泡Ａの外側部分ｆは透過光２ａが照射されていないため暗くなり、輝度が低く認識されるが、気泡Ａの内側部分ｉは反射光３ａによって白く光って輝度が高い状態に認識される。
【００１２】
従って、浮遊物の輝度状態が図２（１）（イ）の状態から図２（２）（イ）の状態に変化したこと（あるいは図２（２）（イ）の状態から図２（１）（イ）の状態に変化したこと）、即ち、同一光軸の透過光２ａ及び反射光３ａが照射される浮遊物の外側部分ｆと内側部分ｉの輝度の高低関係が反転したことを判定手段Ｐで判定することにより該当浮遊物が気泡Ａであると判定される。
即ち、上述のように透過光２ａ及び反射光３ａを照射した容器１内浮遊物の画像を検査デジタルカメラＫで撮像して画像フレーム又はフィールド毎の画像信号を判定手段Ｐに出力することで、判定手段Ｐが時間的に連続する画像フレーム間又はフィールド間の画像信号を比較して浮遊物の外側部分ｆ（第１部分）と内側部分ｉ（第２部分）の輝度の高低関係が反転したことを検出することで当該浮遊物を気泡Ａであると判定して判定結果を出力する。
【００１３】
一方、虫、塵埃、毛等の浮遊物については全体形状が気泡Ａのように球状ではなく不規則の形状をしているため、図２（３）（ア）に示すように、反射光３ａが乱反射されてしまい、その結果、同図（３）（イ）に示すように、常に輝度の低い黒い状態に把握されるので、これを判定手段Ｐで認識することで、当該浮遊物が異物Ｂであると判定できる。即ち、判定手段Ｐにより、時間的に連続する画像フレーム間又はフィールド間の画像信号を比較することで浮遊物を追尾し、容器１内を下方へ移動する（下降する）浮遊物を検出することで当該浮遊物が異物Ｂであると判定したり、あるいは浮遊物の形状又は面積が変化しているものを検出することで当該浮遊物が異物Ｂであると判定する。
【００１４】
尚、浮遊物がプラスチック粉である場合は、当該プラスチック粉に透過光２ａ及び反射光３ａが照射されると当該プラスチック粉は常に薄い輝度で明るく表出され、気泡Ａのように外側と内側の輝度の高低関係が反転することはない。従って、プラスチック粉と気泡とを確実かつ正確に判別できる。即ち、確実かつ正確に容器１内の気泡を判別できるようになる。
【００１５】
実施の形態による装置によれば、製品の品質に影響のない気泡を簡単かつ正確に判定でき、気泡のみが混入した製品を不良品として排除することが無いようにできて製品の歩留まりを向上させることができ、また、虫、塵埃、毛、プラスチック粉等の異物が混入した製品のみを簡単かつ正確に判別できて排除できるようになる。尚、上述した気泡判定処理及び異物判定処理は、気泡判定処理及び異物判定処理プログラムを実行するコンピュータによるソフトウェア処理で実現できる。
【００１６】
また、図１に示す如く、上記ハーフミラー４に代えて、検査デジタルカメラＫ方向に膨出して容器１側が凹状となった縦置の放物線状の凹形ハーフミラー４Ａを採用することが望ましい。これは、平板形のハーフミラー４では、容器１の表面の反射が強くなってしまい、内部の浮遊物を透過光で十分に強調できないが、上記凹形ハーフミラー４Ａを用いると、光が散乱光となるために、容器１の表面の形状に関わりなく、影の無い、正反射も無い映像を得ることができる。即ち、容器１の表面において満遍無く同一輝度の画像が得られる。
【００１７】
尚、ストロボ光源２，３として、所定時間毎に点滅するストロボ光源を用いてもよい。
【００１８】
【発明の効果】
本発明によれば、簡単かつ正確に容器内の気泡を判別できるようになり、良品と不良品とを正確に峻別できるようになる。
【図面の簡単な説明】
【図１】本発明の実施の形態による容器内気泡判定装置を示す構成図。
【図２】実施の形態による容器内気泡判定方法を説明するための図。
【符号の説明】
１ 容器、２，３ ストロボ光源、４ ハーフミラー、Ａ 気泡、Ｂ 異物、Ｋ 検査デジタルカメラ、Ｐ 判定手段、ｆ 外側部分（第１部分）、ｉ 内側部分（第２部分）。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for irradiating a transparent or translucent container filled with a liquid with light to determine bubbles in the container.
[0002]
[Prior art]
For example, as a method of determining air bubbles in a liquid-filled container such as a drip pack, a method applied and published by the present applicant is known. According to this method, the entire floating substance in the container in which the first part where the luminance is recognized high and the second part where the luminance is recognized low are mixed together by irradiating the container with the transmitted light and the reflected light to have a high luminance By adjusting the light amounts of the transmitted light and the reflected light so as to be expressed, the floating matter which is entirely expressed with high luminance is determined to be a bubble (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-116703 A
[Problems to be solved by the invention]
According to the method of Patent Literature 1, the amount of transmitted light and reflected light must be adjusted in order to express the entire bubble with high brightness, which is troublesome. Further, when plastic powder is mixed in the container, the mixed plastic powder must be excluded as a defective product. However, according to the method of Patent Document 1, the plastic powder is always brightly displayed with low brightness. As a result, there is a problem that it is impossible to accurately discriminate bubbles and plastic powder mixed in the liquid container.
An object of the present invention is to provide a method and an apparatus that can easily and accurately determine bubbles mixed in a liquid container.
[0005]
[Means for Solving the Problems]
The method for judging air bubbles in a container of the present invention is to provide a strong or weak difference between transmitted light and reflected light of the same optical axis that irradiate the container from positions opposed to each other across a transparent or translucent container filled with liquid. When a floating substance in the container in which the first part where the luminance is recognized as high and the second part where the luminance is recognized as low is mixed, and then the intensity relationship between the transmitted light and the reflected light is reversed, If the brightness relationship between the first portion and the second portion of the floating object is reversed, the floating object is determined to be a bubble.
The in-vessel air bubble determination device of the present invention includes a transmitted light generation unit at one position opposed to the transparent or translucent container in which the liquid is sealed, and a reflected light generation unit at the other position. The light generating section alternately generates strong transmitted light and weak transmitted light that irradiate the container at predetermined time intervals, and the reflected light generating section generates reflected light having the same optical axis as the transmitted light. When the transmitted light generator is generating strong transmitted light, it generates weak reflected light, and when the transmitted light generator is generating weak transmitted light, it generates strong reflected light. And the inspection camera that captures an image of the floating substance in the container where the reflected light is irradiated and outputs an image signal for each image frame or field, and compares the image signal between temporally successive image frames or fields, The brightness is recognized high When it is detected that the relationship between the brightness of the first portion and the second portion of the floating material in the container, in which the portion and the second portion whose brightness is recognized as low are mixed, the floating material is a bubble. Determination means for determining
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The bubble determination device according to the present invention is used, for example, for screening and inspecting non-defective products and defective products of containers such as drip packs, pharmaceutical containers made of glass or plastic, beverage containers, and industrial liquid storage packs. Containers are used by filling them with liquids according to various uses.However, when filling the liquid, air may be mixed in, or various floating substances adhering to the container or liquid injection means may be mixed. There is. As the suspended matter, in addition to bubbles, foreign substances such as insects, dust, hair, plastic powder and the like are assumed. Although air bubbles have no effect on the quality of the product even if they float in the container, it is necessary to exclude the container containing the foreign matter from the product as a defective product. ADVANTAGE OF THE INVENTION According to the bubble determination apparatus of this invention, the bubble which does not affect the quality of a product can be correctly discriminated, and it becomes possible to distinguish a non-defective product from a defective product accurately.
[0007]
FIG. 1 is a configuration diagram of an in-vessel bubble determining apparatus used in the in-vessel bubble determining method according to the embodiment of the present invention.
As shown in FIG. 1, the apparatus for determining bubbles in a container according to the embodiment includes a transmitted light 2 a and a reflected light 3 a having the same optical axis from opposite positions across a transparent or translucent container 1 in which a liquid is sealed. In order to irradiate the container 1, the transmitted light generator provided at one of the opposing positions, the reflected light generator provided at the other opposing position, the transmitted light 2a and the reflected light 3a Is compared with an inspection digital camera K that captures an image of a floating substance in the container 1 to be irradiated and outputs an image signal for each image frame or field, and an image signal between temporally continuous image frames or fields, It has been detected that the brightness relationship between the first portion and the second portion of the suspended matter in the container 1 in which the first portion where the brightness is recognized as high and the second portion where the brightness is recognized as low are mixed is reversed. If the suspended matter is air bubbles And a determination unit P by determining a computer or the like.
[0008]
The transmitted light generator alternately generates strong transmitted light and weak transmitted light at predetermined intervals, and the reflected light generator emits weak reflected light when the transmitted light generator is generating strong transmitted light. When the transmitted light is generated and the transmitted light generator is generating weak transmitted light, it generates strong reflected light.
The transmitted light generation unit is constituted by, for example, a strobe light source 2.
The reflected light generating unit, for example, reflects the light from the strobe light source 3 and the reflected light 3a having the same optical axis as the optical axis of the transmitted light 2a from the side opposite to the transmitted light 2a by reflecting the light from the strobe light source 3. And a half mirror 4 for irradiating the light.
[0009]
Reference numeral 5 denotes a diffusion plate for preventing shading (luminance unevenness on a screen), and reference numeral 6 denotes an operation inducing means for inducing a flow in the container 1 to induce movement of bubbles and foreign matter. For example, the operation inducing means 6 may be configured to induce a flow in the container 1 by rotating the container 1. Therefore, for example, the motion inducing means 6 can be constituted by a grip 6a for gripping the upper and lower portions of the container 1 and a support bar 6b for rotatably supporting the grip 6a in the horizontal direction as shown in the drawing. Thereby, a flow for rotating bubbles and foreign matters in the horizontal direction is generated in the container 1. In addition to rotating the container 1, the operation inducing means 6 may induce the flow by swinging the container 1 up, down, left, or right.
[0010]
Next, a determination method by the air bubble determination device in the embodiment will be described with reference to FIGS.
The flow is induced in the container 1 by the operation inducing means 6, and the power of the strobe light source 2 for transmitted light and the strobe light source 3 for reflected light is turned on. Then, the strobe light sources 2 and 3 alternately repeat a state of generating strong light and a state of generating weak light at predetermined time intervals. Here, the timings of the strobe light sources 2 and 3 generating strong light and the timings of generating weak light are reversed. That is, when the strobe light source 2 for transmitted light is generating strong transmitted light, the strobe light source 3 for reflected light generates weak reflected light, and the strobe light source 2 for transmitted light is generating weak transmitted light. Sometimes the strobe light source 3 for reflected light generates strong reflected light.
[0011]
FIG. 2 shows an optical state when the transmitted light 2a and the reflected light 3a are applied to the bubbles A and the foreign matter B floating in the container 1.
For example, as shown in FIGS. 2A and 2A, in a state where the strobe light source 2 for transmitted light generates strong transmitted light 2a and the strobe light source 3 for reflected light generates weak reflected light 3a. As shown in FIGS. 2A and 2B, the outer portion f of the bubble A irradiated with the transmitted light 2a and the reflected light 3a having the same optical axis shines white by the transmitted light 2a and is recognized as having high luminance. However, the inner part i of the bubble A becomes dark as a shadow due to the transmitted light 2a, and is recognized as having a low luminance.
Next, as shown in FIGS. 2 (2) and 2 (a), a state in which the strobe light source 2 for transmitted light generates weak transmitted light 2a and the strobe light source 3 for reflected light generates strong reflected light 3a. In FIG. 2B, as shown in FIG. 2B, the outer portion f of the bubble A irradiated with the transmitted light 2a and the reflected light 3a having the same optical axis becomes dark because the transmitted light 2a is not irradiated. Although the brightness is recognized to be low, the inner part i of the bubble A is illuminated white by the reflected light 3a and is recognized to be in a state of high brightness.
[0012]
Accordingly, the change of the brightness state of the floating object from the state of FIG. 2 (1) (a) to the state of FIG. 2 (2) (a) (or from the state of FIG. 2 (2) (a) to FIG. That is, the state has changed to the state of (a)), that is, it is determined that the relationship between the brightness of the outer portion f and the inner portion i of the floating object irradiated with the transmitted light 2a and the reflected light 3a having the same optical axis has been reversed. By the determination by the means P, it is determined that the suspended matter is the bubble A.
That is, as described above, the image of the floating matter in the container 1 irradiated with the transmitted light 2a and the reflected light 3a is captured by the inspection digital camera K, and the image signal for each image frame or field is output to the determination unit P. The judging means P compares the image signals between the temporally continuous image frames or between the fields, and the level relationship of the brightness of the outer portion f (first portion) and the inner portion i (second portion) of the floating object is inverted. By detecting this, the suspended matter is determined to be the bubble A, and the determination result is output.
[0013]
On the other hand, since floating substances such as insects, dust, hairs, and the like have an irregular shape rather than a spherical shape like the bubble A, the reflected light 3a as shown in FIG. Is irregularly reflected, and as a result, as shown in FIGS. 3 (a) and 3 (b), a black state with low luminance is always grasped. B can be determined. That is, the floating means is tracked by comparing image signals between temporally continuous image frames or between fields by the determination means P, and a floating substance which moves downward (falls) in the container 1 is detected. It is determined that the floating substance is a foreign substance B by detecting that the floating substance is a foreign substance B, or by detecting a floating substance having a changed shape or area.
[0014]
When the suspended matter is plastic powder, when the transmitted light 2a and the reflected light 3a are irradiated on the plastic powder, the plastic powder is always brightly expressed with a low brightness, and the outer and inner portions of the plastic powder are like air bubbles A. The relationship between the brightness levels is not reversed. Therefore, the plastic powder and the bubbles can be reliably and accurately distinguished. That is, the bubbles in the container 1 can be reliably and accurately determined.
[0015]
According to the apparatus according to the embodiment, air bubbles that do not affect the quality of the product can be easily and accurately determined, and a product containing only air bubbles can be prevented from being excluded as a defective product, thereby improving the product yield. In addition, it is possible to easily and accurately discriminate and eliminate only products containing foreign substances such as insects, dust, hairs, and plastic powder. The above-described bubble determination processing and foreign substance determination processing can be realized by software processing by a computer that executes a bubble determination processing and foreign substance determination processing program.
[0016]
Further, as shown in FIG. 1, it is preferable to employ a vertically arranged parabolic concave half mirror 4A which bulges in the direction of the inspection digital camera K and has a concave shape on the container 1 side, instead of the half mirror 4. This is because, in the case of the flat half mirror 4, the reflection on the surface of the container 1 becomes strong and the suspended matter inside cannot be sufficiently emphasized by the transmitted light. However, when the concave half mirror 4 A is used, the light is scattered. Since it becomes light, an image without shadows and without regular reflection can be obtained regardless of the shape of the surface of the container 1. That is, images of the same luminance can be uniformly obtained on the surface of the container 1.
[0017]
Note that, as the strobe light sources 2 and 3, a strobe light source that blinks every predetermined time may be used.
[0018]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to easily and accurately determine the air bubbles in the container, and it is possible to accurately distinguish non-defective products from defective products.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an apparatus for determining bubbles in a container according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a method for determining bubbles in a container according to an embodiment.
[Explanation of symbols]
1 container, 2, 3 strobe light source, 4 half mirror, A bubble, B foreign matter, K inspection digital camera, P determination means, f outside part (first part), i inside part (second part).

Claims (2)

液体が封入された透明または半透明の容器を挟んで相対向する位置から容器に照射する同一光軸の透過光と反射光とに強弱差を付けることにより、輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在している容器内浮遊物を確認し、その後、透過光と反射光の強弱関係を逆転させた場合に上記浮遊物の第１部分と第２部分の輝度の高低関係が反転したならば当該浮遊物を気泡であると判定することを特徴とする容器内気泡判定方法。A first portion that is recognized to have high brightness by making a difference in intensity between transmitted light and reflected light of the same optical axis that irradiate the container from opposite positions with a transparent or translucent container filled with liquid interposed therebetween. And the second part which is recognized as having low brightness is confirmed as a floating substance in the container, and then, when the strength relationship between the transmitted light and the reflected light is reversed, the first part and the second A method for judging air bubbles in a container, characterized in that the floating matter is judged to be air bubbles when the level relationship of the luminance of the portion is reversed. 液体が封入された透明または半透明の容器を挟んで相対向する一方の位置に透過光発生部を備えるとともに他方の位置に反射光発生部を備え、透過光発生部は所定時間毎に容器に照射する強い透過光と弱い透過光とを交互に発生するものであり、反射光発生部は透過光と同一光軸の反射光を発生するものであって、透過光発生部が強い透過光を発生している時には弱い反射光を発生し、透過光発生部が弱い透過光を発生している時には強い反射光を発生するものであり、さらに、透過光及び反射光が照射される容器内浮遊物の画像を撮像して画像フレーム又はフィールド毎の画像信号を出力する検査カメラと、時間的に連続する画像フレーム間又はフィールド間の画像信号を比較し、輝度が高く認識される第１部分と輝度が低く認識される第２部分とが混在していた容器内浮遊物の第１部分と第２部分の輝度の高低関係が反転したことを検出した場合に当該浮遊物を気泡であると判定する判定手段とを備えたことを特徴とする容器内気泡判定装置。A transmissive light generator is provided at one position facing the transparent or translucent container filled with liquid, and a reflected light generator is provided at the other position. The transmitted strong light and the weak transmitted light are alternately generated, and the reflected light generator generates reflected light having the same optical axis as the transmitted light. The transmitted light generator generates strong transmitted light. It generates weak reflected light when it is generated, and generates strong reflected light when the transmitted light generator is generating weak transmitted light. An inspection camera that captures an image of an object and outputs an image signal for each image frame or field, and compares an image signal between temporally consecutive image frames or fields, and a first portion whose luminance is recognized as being high. The brightness is recognized as low Determination means for determining that the suspended matter is an air bubble when detecting that the luminance relationship between the first part and the second part of the suspended matter in the container in which the part is mixed is inverted; A bubble judging device in a container characterized by the above-mentioned.
JP2003115584A 2003-04-21 2003-04-21 In-container bubble determination method and apparatus Expired - Fee Related JP4163039B2 (en)

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JP2012112938A (en) * 2010-11-25 2012-06-14 Mettler-Toledo Ag Apparatus and method for detecting solid substances in liquid phase
JP2013246174A (en) * 2012-05-24 2013-12-09 G D Spa Inspection method of product in packaging machine
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JP2001116703A (en) * 1999-10-21 2001-04-27 M I L:Kk Method and apparatus for discriminating flotage in container
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Cited By (8)

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Publication number Priority date Publication date Assignee Title
JP2012112938A (en) * 2010-11-25 2012-06-14 Mettler-Toledo Ag Apparatus and method for detecting solid substances in liquid phase
JP2013246174A (en) * 2012-05-24 2013-12-09 G D Spa Inspection method of product in packaging machine
WO2016103622A1 (en) * 2014-12-26 2016-06-30 五洋商事株式会社 External appearance inspection device and inspection system
WO2020188730A1 (en) * 2019-03-19 2020-09-24 日本電気株式会社 Inspection device, inspection method, and non-transitory computer-readable medium
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CN110261322A (en) * 2019-06-21 2019-09-20 山东明佳科技有限公司 A kind of bottled clear solution minute impurities detection optical imagery system and method
CN110261322B (en) * 2019-06-21 2023-03-14 山东明佳科技有限公司 Optical imaging system and method for detecting tiny impurities in bottled transparent solution

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