JPS63229348A - Method for detecting small-size foreign matter in container - Google Patents
Method for detecting small-size foreign matter in containerInfo
- Publication number
- JPS63229348A JPS63229348A JP62064642A JP6464287A JPS63229348A JP S63229348 A JPS63229348 A JP S63229348A JP 62064642 A JP62064642 A JP 62064642A JP 6464287 A JP6464287 A JP 6464287A JP S63229348 A JPS63229348 A JP S63229348A
- Authority
- JP
- Japan
- Prior art keywords
- container
- small
- small foreign
- size
- size foreign
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9009—Non-optical constructional details affecting optical inspection, e.g. cleaning mechanisms for optical parts, vibration reduction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9018—Dirt detection in containers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0078—Testing material properties on manufactured objects
- G01N33/0081—Containers; Packages; Bottles
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は容器内に存在する紙粉や金属粉や砂粒などの小
異物の有無やその個数および大きさを検出するための容
器内小異物の検出方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a method for detecting the presence of small foreign objects such as paper powder, metal powder, sand grains, etc. in a container, as well as their number and size. Detection method.
容器内に存在する紙粉や金属粉や砂粒等の小異物を検出
するための従来の容器内小異物の検出方法は、その容器
の中に光ビームを照射し、小異物にあたって反射または
散乱した光をカメラで撮影した画像を処理して検出を行
うか、または容器の底面または側面に受光素子を配置し
、光ビーム分容器の上方向または横方向から照射して小
異物を透過する光ビームの光量の減少量を求めることに
よって検出を行うという手段を用いている。The conventional method for detecting small foreign objects in a container, such as paper powder, metal powder, or sand grains, is to irradiate a light beam into the container and detect the light that is reflected or scattered when it hits the small foreign object. Detection is performed by processing images taken with a camera, or a light receiving element is placed on the bottom or side of the container, and the light beam is irradiated from the top or side of the container to transmit a light beam that passes through small foreign objects. Detection is performed by determining the amount of decrease in the amount of light.
しかしながら、上述のような従来の容器内の小異物の検
出方法のうち、反射または散乱した光を画像としてとら
える前者の方法は、光ビームと小異物による光ビームの
反射光または散乱光とをとらえるなめ、カメラを容器内
面の各部を撮影できるように走査しなければならす、ま
た小異物の種類によっては、反射光量または散乱光量が
小さいために、その検出が困難な場合があるという欠点
を有している。また透過ビームの減少によって検出する
後者の方法は、懸濁液や煙については透過ヒームの減少
量によって検出することができるか、紙粉や金属粉や砂
粒などについては、光ビームを走査したとき、その透過
ビームを受ける受光素子らそれに従って移動するか、あ
るいは容器全体におおうように全面に配置しなければな
らないという欠点も有している。However, among the conventional methods for detecting small foreign objects in a container as described above, the former method captures reflected or scattered light as an image, but the former method captures the light beam and the reflected light or scattered light of the light beam by the small foreign object. However, the camera has to be scanned to take pictures of each part of the inner surface of the container, and depending on the type of foreign object, the amount of reflected light or scattered light is small, so it may be difficult to detect it. ing. The latter method, which detects by the decrease in the transmitted beam, can detect suspensions and smoke by the amount of decrease in the transmitted beam, and can detect paper powder, metal powder, sand grains, etc. by scanning the light beam. However, it also has the disadvantage that the light-receiving element that receives the transmitted beam must be moved accordingly or placed over the entire surface of the container.
本発明は、上述のような従来の容器内の小異物の検出方
法の欠点を除去して、簡単な構成で容易かつ確実に容器
内の小異物の存在の有無やその数および大きさを検出す
ることのできる容器内小異物の検出方法を提供すること
にある。The present invention eliminates the drawbacks of the conventional method of detecting small foreign objects in a container as described above, and easily and reliably detects the presence or absence of small foreign objects in a container, as well as their number and size with a simple configuration. The object of the present invention is to provide a method for detecting small foreign objects in a container.
本発明の容器内小異物の検出方法は、容器内に存在する
小異物を流体管から流体を噴出することによって容器の
上部に吹き上げ、この吹き上げられた小異物に対して容
器の側面から扇形状の光ビームを照射し、吹き上げられ
た小異物に当って反射または散乱した光ビームの反射光
または散乱光を容器の上方に配置した撮像部によって撮
影して画像処理部に送り、画像処理部において小異物の
存在の有無または小異物の個数または大きさを判定する
処理を行い、その結果を外部に出力するようにして構成
したものである。The method of detecting a small foreign object in a container according to the present invention blows up the small foreign object existing in the container to the upper part of the container by jetting fluid from a fluid pipe, and the small foreign object that is blown up is shaped like a fan from the side of the container. The reflected or scattered light of the light beam that hits the blown up small foreign matter is photographed by an imaging section placed above the container and sent to the image processing section. It is configured to perform processing to determine the presence or absence of small foreign objects, the number or size of small foreign objects, and output the results to the outside.
以下本発明の実施例について図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例を用いた容器内小異物検出装
置の一例を示すブロック図である。FIG. 1 is a block diagram showing an example of a device for detecting small foreign objects in a container using an embodiment of the present invention.
第１図において、容器１の内部は気体で充満されており
、その中に小異物２が存在している。小異物２は、エア
ー管３がら噴出するエアー４によって容器１の上の方に
吹き上げられる。Ｈｅ−Ｎｅレーザ５からのレーザビー
ム光９ａは、凸レンズ７ａとコリメータ７ｂとから構成
されるエキスパンダ６でそのビーム径が拡大されてレー
ザビーム光９ｂとなって円柱レンズ８に入射し、ここで
扇形の光のスリットレーザ光（スリット光）９ｃとなる
。このスリット光９ｃは容器１の上端面の近傍に照射さ
れる。このように照射されたスリット光９ｃは、容器１
内に吹き上げられた小異物２に当り、その反射光または
散乱光は、容器１の上方に設けられたカメラ１０にフィ
ルタ１２とレンス１１とを介して入射し、カメラ１０に
よるその撮影画面はモニタ装置１４に表示されるととも
に画像信号として画像処理部１３に入力される。画像処
理部１３はこの入力した画像信号を処理して容器１内の
小異物２の有無やその個数および大きさの検出を行う。In FIG. 1, the inside of a container 1 is filled with gas, and a small foreign object 2 is present therein. The small foreign matter 2 is blown upward into the container 1 by the air 4 jetted from the air pipe 3. The laser beam light 9a from the He-Ne laser 5 is expanded in beam diameter by an expander 6 composed of a convex lens 7a and a collimator 7b, and becomes a laser beam light 9b, which enters the cylindrical lens 8. This becomes a fan-shaped slit laser beam (slit light) 9c. This slit light 9c is irradiated near the upper end surface of the container 1. The slit light 9c irradiated in this way is
The reflected light or scattered light from the small foreign matter 2 blown up inside the container 1 enters the camera 10 installed above the container 1 via the filter 12 and the lens 11, and the image taken by the camera 10 is displayed on the monitor. The image is displayed on the device 14 and is input to the image processing section 13 as an image signal. The image processing section 13 processes this input image signal to detect the presence or absence of small foreign objects 2 in the container 1, as well as their number and size.
なお、エアー４の吹き出しは、エアー送出制御部１７に
よって制御され、エアー４が吹き出された時点でエアー
送出信号１８を画像処理部１３に送り、画像処理部１３
にカメラ１０からの画像信号の取込みのタイミングのト
リガ入力信号を与える。画像処理部１３は、その後一定
時間の小異物の個数と大きさを判定する処理動作を行い
、その結果を外部出力信号１つとして外部機器に出力す
る。容器１とスリットレーザ光９ｃとをカメラ１０の視
野全体にわたって外部蔽光板１６で覆うことによって、
よりコントラストの高く従って高精度の小異物の検出が
可能となる。Note that the blowing out of the air 4 is controlled by the air sending control section 17, and when the air 4 is blown out, the air sending signal 18 is sent to the image processing section 13.
A trigger input signal for the timing of capturing the image signal from the camera 10 is given to the camera 10. The image processing unit 13 then performs a processing operation to determine the number and size of small foreign objects for a certain period of time, and outputs the result to an external device as one external output signal. By covering the container 1 and the slit laser beam 9c with the external light shielding plate 16 over the entire field of view of the camera 10,
It is possible to detect small foreign objects with higher contrast and higher precision.
第２図は本発明の他の実施例を用いた容器内小異物検出
装置の一例を示す斜視図である。FIG. 2 is a perspective view showing an example of a small foreign matter detection device in a container using another embodiment of the present invention.
第２図において容器３１の中には液体が充満されており
、液体の比重よりも大きい比重の小異物３２は液体管３
３から噴出される液体３４によって容器３１の上部に吹
き上げられる。Ｈｅ−Ｎｅレーザ３５とポリコンスキャ
ナミラー２０とによって作られたレーザビーム光３９ｃ
は、容器３１の上部の透明板２１を透過して液面の上面
付近に吹き上げられてきた小異物３２を照射する。レー
ザビーム光３９ｃは容器３１の入射面と反対側の側面に
配置されたミラー２２で反射され、再度液体３４を照射
するので、ミラー２２は、Ｈｅ−Ｎｅレーザ３５および
ポリゴンスキャナ２０と同等の役割を果たす。さらに他
の二つの側面のミラ−を配置すれば、小異物に照射する
レーザビーム光は四方からくることになり、反射光また
は散乱光量はより増大してカメラ４０による小異物の検
出は容易になる。In FIG. 2, a container 31 is filled with liquid, and a small foreign object 32 with a specific gravity greater than that of the liquid is placed in a liquid pipe 3.
The liquid 34 spouted from the container 31 is blown up to the upper part of the container 31. Laser beam light 39c generated by He-Ne laser 35 and polycon scanner mirror 20
irradiates the small foreign matter 32 that has passed through the transparent plate 21 at the top of the container 31 and has been blown up near the top of the liquid surface. The laser beam light 39c is reflected by a mirror 22 disposed on the opposite side of the incident surface of the container 31 and irradiates the liquid 34 again, so the mirror 22 plays the same role as the He-Ne laser 35 and the polygon scanner 20. fulfill. Furthermore, by arranging the other two side mirrors, the laser beam light irradiating the small foreign object will come from all directions, and the amount of reflected light or scattered light will further increase, making it easier for the camera 40 to detect the small foreign object. Become.
以上説明したように、本発明による容器内の小異物検出
方法を用いることにより、比較的簡単な構成によって容
易かつ高精度に容器内の小異物を検出することができる
という効果かある。As explained above, by using the method for detecting small foreign objects in a container according to the present invention, there is an effect that small foreign objects in a container can be easily and highly accurately detected with a relatively simple configuration.
第１図は本発明の一実施例を用いた容器内小異物検出装
置の一例を示すブロック図、第２図は本発明の他の実施
例を用いた容器内小異物検出装置の一例を示す斜視図で
容器内が液体で充たされている場合を示す図である。
１・３１・・・容器、２・３２・・・小異物、３・・・
流体管（エアー管）、４・・・液体（エアー）、５・３
５・・・Ｈｅ−Ｎｅレーザ、６・・・エキスパンダ、７
ａ・・・凸レンズ、７ｂ・・・コリメータ、８・・・円
柱レンズ、９ａ・９ｂ・・・レーザビーム光、９ｃ・・
・スリット光、１０・４０・・・カメラ、１１・４１・
・・レンズ、１２・４２・・・フィルタ、１３・・・画
像処理部、１４・・・モニタ装置、１５・・・小異物の
画像、１６・・・外光蔽光板、１７・・・エアー送出制
御部、１８・・・エアー送出信号、１９・・・外部出力
信号、２ｏ・・・ポリゴンミラー、２１・・・透明板、
２２・・・ミラー、３３川液体管、３４・・・液体、３
９ｃ・・・レーザビーム光。
ｒ＼FIG. 1 is a block diagram showing an example of a device for detecting small foreign objects in a container using an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a device for detecting small foreign objects in a container using another embodiment of the present invention. FIG. 3 is a perspective view showing a case where the inside of the container is filled with liquid. 1.31...Container, 2.32...Small foreign matter, 3...
Fluid pipe (air pipe), 4...Liquid (air), 5.3
5... He-Ne laser, 6... Expander, 7
a... Convex lens, 7b... Collimator, 8... Cylindrical lens, 9a, 9b... Laser beam light, 9c...
・Slit light, 10.40...Camera, 11.41.
... Lens, 12.42 ... Filter, 13 ... Image processing section, 14 ... Monitor device, 15 ... Image of small foreign object, 16 ... External light shielding plate, 17 ... Air Sending control unit, 18... Air sending signal, 19... External output signal, 2o... Polygon mirror, 21... Transparent plate,
22...mirror, 33 river liquid pipe, 34...liquid, 3
9c...Laser beam light. r＼
Claims (1)
在する小異物を前記容器の上部に吹き上げ、前記容器の
上部の側面から前記吹き上げた小異物に扇形状の光ビー
ムを照射し、前記吹き上げた小異物に当って反射または
散乱した前記光ビームの反射光または散乱光を前記容器
の上方に配置した撮像部によって撮影し、前記撮影した
映像を画像処理部に送って前記画像処理部において小異
物の存在の有無または小異物の個数または大きさを判定
する処理を行い、前記処理結果を外部に出力することを
特徴とする容器内小異物の検出方法。ejecting fluid from a fluid pipe into a container to blow up small foreign objects present in the container to the top of the container, and irradiating the blown up small foreign objects with a fan-shaped light beam from a side surface of the top of the container; The reflected light or scattered light of the light beam that is reflected or scattered by the blown up small foreign matter is photographed by an imaging unit disposed above the container, and the photographed image is sent to an image processing unit. 1. A method for detecting small foreign objects in a container, comprising: performing a process of determining the presence or absence of a small foreign object, or the number or size of the small foreign objects, and outputting the processing result to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62064642A JPS63229348A (en) | 1987-03-18 | 1987-03-18 | Method for detecting small-size foreign matter in container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62064642A JPS63229348A (en) | 1987-03-18 | 1987-03-18 | Method for detecting small-size foreign matter in container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63229348A true JPS63229348A (en) | 1988-09-26 |
| JPH0559377B2 JPH0559377B2 (en) | 1993-08-30 |
Family
ID=13264122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62064642A Granted JPS63229348A (en) | 1987-03-18 | 1987-03-18 | Method for detecting small-size foreign matter in container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63229348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005283527A (en) * | 2004-03-31 | 2005-10-13 | Hitachi High-Technologies Corp | Apparatus for detecting foreign substance |
-
1987
- 1987-03-18 JP JP62064642A patent/JPS63229348A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005283527A (en) * | 2004-03-31 | 2005-10-13 | Hitachi High-Technologies Corp | Apparatus for detecting foreign substance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0559377B2 (en) | 1993-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |