JPS5896204A - Measuring method for size of material to be rolled - Google Patents
Measuring method for size of material to be rolledInfo
- Publication number
- JPS5896204A JPS5896204A JP19544081A JP19544081A JPS5896204A JP S5896204 A JPS5896204 A JP S5896204A JP 19544081 A JP19544081 A JP 19544081A JP 19544081 A JP19544081 A JP 19544081A JP S5896204 A JPS5896204 A JP S5896204A
- Authority
- JP
- Japan
- Prior art keywords
- rolled
- sectional shape
- image sensor
- width
- thickness
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B11/046—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width
Abstract
Description
【発明の詳細な説明】
本一羽は、被圧延材の寸法測定方法に係り、特に、圧延
された鋼板の平面形状をイメージセンサとｉイクロコン
ビ工−タにより自動認識する−に用いるに好適な、光源
とイメージセンナの聞に被圧延材を配置し、集光レンズ
によりイメージセンナ上に結像させた被圧砥材Ｏ陰影長
さから、被圧延材の板輻尋をＩ［定する被圧延材の寸法
測定方法の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the dimensions of a rolled material, and is particularly suitable for use in automatically recognizing the planar shape of a rolled steel plate using an image sensor and an i-microcombinator. , the material to be rolled is placed between the light source and the image sensor, and the plate radius of the material to be rolled is determined by This invention relates to improvements in methods for measuring dimensions of rolled materials.
圧延された鋼板の平面形状をイメージセンナとマイクロ
コンピュータ（より自動認識する方法が実用化されてい
る。これは、菖１図に示す如く。A method of automatically recognizing the planar shape of a rolled steel plate using an image sensor and a microcomputer has been put into practical use, as shown in Figure 1.
下部光源１０とイメージセンナ１２０間の搬送テーブル
ローラ上に鋼板１４を配置し、集光レンズ１６によりイ
メージ七ン？１２上に結像させた鋼板１４の陰影長さか
ら、鋼板１４の板幅Ｘ轡を測定するもので、鋼板１４下
側の下部光１［１０から光を照射し、鋼板１４の陰影を
集光レンズ１６を介してイメージセンナ１２上に結像す
ると、イメージセンサ１２の各ビットの出力は、陰影Ｓ
は’ Ｌｏｗ’ 、光Ｏ癲九る部分は’Ｈ１ｇｈ’とな
るので、ａ定有効輻をＷ、これに対応するイメージセン
ナｌ２の有効検出ピット数をにビットとすれば・、鋼１
［１４の陰影ｑ検出ビット数ｙから、次式を用いて、鋼
板１４Ｃ）板＠Ｘが算出できるもの′Ｃある。A steel plate 14 is placed on the conveying table roller between the lower light source 10 and the image sensor 120, and an image is captured by the condensing lens 16. The width of the steel plate 14 is measured from the length of the shadow of the steel plate 14 that is imaged on the steel plate 12. Light is irradiated from the lower light 1 [10] below the steel plate 14, and the shadow of the steel plate 14 is collected. When an image is formed on the image sensor 12 through the optical lens 16, the output of each bit of the image sensor 12 becomes a shadow S.
is 'Low' and the part where the light output is reduced is 'H1gh', so if the a constant effective radiation is W and the corresponding number of effective detection pits of image sensor l2 is bit, then steel 1
[There is a steel plate 14C) plate @X that can be calculated from the shadow q of 14 and the number of detected bits y using the following equation.
！ ｗａ ７ ｘ−Ｍ−・・・・・・・・・・・・・・
・（り従って、圧延された鋼４［１４の平面形状を自動
認識する一ＫＦｉ、前記のよう＃Ｃしてイメージセンサ
１３により鋼１［１４Ｃ）先後端クロップ形状と板幅を
検出すると共虻、メジャリングロールにより長さ方角Ｏ
検出を行ない、この２つの検出情報を組み舎せてマイク
ロコンピュータで形状ｔＷ識するよ５Ｋしていゐ。! wa 7 x-M-・・・・・・・・・・・・・・・
・(Accordingly, the planar shape of rolled steel 4 [14] is automatically recognized by KFi, and the front and rear end crop shapes and plate widths of steel 1 [14C] are detected by the image sensor 13 using #C as described above. , length direction O by measuring roll
Detection is performed, these two pieces of detection information are combined, and the shape is recognized using a microcomputer.
しかしながら、前記のような、鋼板の板幅をその陰影長
さから検出する方法においては、鋼板の板厚或いは板一
方向端部断面形状が変化するとイメージセン１０視距離
が変化してしまうため、従来は、精ｔｏ良い板幅を検出
することが困麹でめった。However, in the above-mentioned method of detecting the width of a steel plate from its shadow length, if the thickness of the steel plate or the cross-sectional shape of the edge in one direction changes, the viewing distance of the image sensor 10 changes. In the past, it was difficult to accurately detect the board width.
本斃＠は、前記従来の欠点を解消するべくなされえもＯ
て、被圧延材の板厚或いは寸法測定方向端部断面形状の
変化による寸法検出誤差を防止することができ、従って
、被圧延材の寸法を、高精度で、且つ、迅速に求めるこ
とができる被圧延材の寸法一定方性を提供するととを目
的とする。This is an attempt to overcome the drawbacks of the conventional technology.
Therefore, it is possible to prevent dimension detection errors due to changes in the plate thickness of the rolled material or the end cross-sectional shape in the dimension measurement direction, and therefore, the dimensions of the rolled material can be determined with high accuracy and quickly. The purpose is to provide dimensional uniformity of rolled material.
本発明Ｆｉ、光源とイメージセンナの間ＫＩｌ［圧延材
を配置し、集光レンズによりイメージセンナ上に結儂さ
せた被圧延材の陰影長さから、被圧砥材の板幅等を測定
する被圧砥材Ｏ寸法測定方法において、前記イメージセ
ンサによる測定値を、被圧砥材の板厚及び寸法測定方向
端部断面形状に応じて補正して、被圧延材の寸法を求め
るようにして、前記目的を達、成したものである。In the present invention, KIl is placed between the light source and the image senna [the rolled material is placed, and the plate width of the pressed abrasive material is measured from the shadow length of the rolled material condensed on the image senna by a condensing lens. In the pressure abrasive material O dimension measurement method, the measurement value by the image sensor is corrected according to the plate thickness of the pressure abrasive material and the cross-sectional shape of the end in the dimension measurement direction to determine the dimensions of the rolled material. , the above objectives have been achieved.
又、前記イメージセンサによる測定値を、まず。Also, first, let's look at the measured values by the image sensor.
被圧延材の板厚に応じて補正し、次いで、被圧延材の寸
法測定方向端部断面形状の予測或は認識パターンに応じ
て作成した補正係数を乗じて補正するよ５Ｋしたもので
ある。5K is calculated by correcting according to the thickness of the material to be rolled, and then multiplying by a correction coefficient created according to a predicted or recognized pattern of the end cross-sectional shape of the material to be rolled in the dimension measurement direction.
以下図面を参照して、本発明０＠縮例を詳細に説明する
。DESCRIPTION OF THE PREFERRED EMBODIMENTS A reduced example of the present invention will be described in detail below with reference to the drawings.
イメージセンサ罠よる鋼板等の被圧延材の平面形状認識
では、板厚或いは寸法測定方向端部断面形状が変化する
と、イメージセンナの視距離が変化するため、被圧延材
の陰影長さ、即ち、イメージセンナ出力が変化する０例
えば、第２図に示す如く、被圧延材１例えば鋼板１４の
寸法測定方向端部断面形状が剪断後の状態、即ち矩形で
ある場合ＫＦｉ、イメージセンナ１２を視距離（基準距
離）ＤＩｅけ離して設定して板厚ｔの鋼板１４を検出す
る場合、鋼板１４（ＤＸＣ）［幅ｄＫ対し、イメージセ
ンサ１２が出力する板幅（以下見かけの板幅と称する）
Ｆｉｊとな９゛、鋼板１４の端部断面形状が矩形である
場合の真の板幅ｄは次式で示される如くとなる。When recognizing the planar shape of a rolled material such as a steel plate using an image sensor trap, if the thickness of the plate or the cross-sectional shape of the end in the dimension measurement direction changes, the visual distance of the image sensor changes. For example, as shown in FIG. 2, when the end cross-sectional shape in the dimension measurement direction of the rolled material 1, for example, a steel plate 14, is in the state after shearing, that is, it is rectangular, KFi, the image sensor 12 is set at a viewing distance. (Reference distance) When detecting a steel plate 14 with a thickness t by setting DIe apart, the steel plate 14 (DXC) [The plate width output by the image sensor 12 (hereinafter referred to as apparent plate width) with respect to the width dK]
Fij=9゛, and when the end cross-sectional shape of the steel plate 14 is rectangular, the true plate width d is as shown by the following equation.
ＣＤ−ｔ）・ｌ
ｄ＝ Ｄ ・・・・・・・・・・・・（２）し
かしながら、実際には鋼板１４の端部断面形状が矩形で
あることは殆んどなく、圧延過程の条件によｐ種々様々
な形状をしているため、端部断面形状Ｋｉじて補正され
た鋼板の真の板幅ｄ′は次式で示す如くとなる。CD-t)・l d= D (2) However, in reality, the end cross-sectional shape of the steel plate 14 is almost never rectangular, and the rolling process Since P has various shapes depending on the conditions, the true width d' of the steel plate corrected by the end cross-sectional shape Ki is as shown in the following equation.
ｄ’＝に−ｄ ・・・・・・・・・・・・・・・（
３）ここでＫは、鋼板の端部断ＩＩＩ形状に応じて作成
した補正係数であり、端部断面形状が矩形である時は、
ｌとする。d'=to-d ・・・・・・・・・・・・・・・(
3) Here, K is a correction coefficient created according to the end cross-sectional shape of the steel plate, and when the end cross-sectional shape is rectangular,
Let it be l.
鋼板の端部断面形状は圧延過１１０条件により変化する
ため、前記補正係数Ｘも変化する。従って、本発明にお
いては、例えばｌＩＦ５図（４）及びＣＢ）Ｋ示すよう
な２種のパターンを想定する。命、ｌｌ３１ＥＩ（Ａ）
Ｋ示すような端部断面形状をパターン人と称し、第３Ｗ
Ａ＠ＩＫ示すような断［形状をパターンＢと称すること
に丁れば、パターン人の場合、実際の板厚ｔＫ対して、
イメージセンｔ１２が出力する見かけＯ板幅ＩＦｉ、真
の板幅ｄ′より大となる。従って、実際の板厚ｔの代り
に、他の板厚ｔｌを補正に用いれば、求められる板幅Ｆ
ｉｄ“となり、誤差を非常に小さくすることができる。Since the end cross-sectional shape of the steel plate changes depending on the rolling conditions, the correction coefficient X also changes. Therefore, in the present invention, two types of patterns are assumed, for example, as shown in FIG. 5(4) and CB)K. Life, ll31EI(A)
The cross-sectional shape of the end as shown in K is called a pattern person, and the 3rd W
A@IK [If the shape is referred to as pattern B, in the case of a pattern person, for the actual plate thickness tK,
The apparent O plate width IFi output by the image center t12 is larger than the true plate width d'. Therefore, if another plate thickness tl is used for correction instead of the actual plate thickness t, the obtained plate width F
id", and the error can be made very small.
又、パターンＢの場合は、更に端部断面形状が複雑とな
るため、板厚ｔ、を補正に用いるだけでなく、上側端部
と下側端ｓＯ央出長さｏｓ’ｂ１両看Ｏ見込角ｅ等を用
いることにより、補正精度を上げることができる。In the case of pattern B, the cross-sectional shape of the end is even more complicated, so in addition to using the plate thickness t for correction, the estimated length of the upper and lower ends sO center length os'b1 By using the angle e etc., the correction accuracy can be improved.
なお前記パターンＡとパターンＢＣ）判定は、圧延工＠
に＄Ｐける圧延条件、スラブ条件等により。Note that the above pattern A and pattern BC) are determined by rolling mill@
Depending on rolling conditions, slab conditions, etc.
皺蟲被圧延材一枚毎に１次の予測式により決定すること
ができる。It can be determined for each sheet of wrinkle-rolled material using a first-order prediction formula.
Ｙｍａｓ＋ａｔＨｐ＋ａｔＨａ＋ａｓＨｐｍ〒＋ａａＨ
ｎｖ ・・−”・ （４）ここで、 Ｈｐは製品板
厚、Ｈａはスラブ厚さ、ＨＤＢテは成形終了時の厚さ、
ＨｎｖＦｉ幅出し終了時の厚さ％ ａｇｂ ｌ１％ａｙ
ｓ ａｓ、ａａ １１定数である。具体的には前出（４
）式の左辺の値ｙｔ算出し、Ｙの値が正である場合には
、パターンＡであると予測判定し、例えばに−０，５と
し、Ｙの値が負である場合ＫＦｉ、パターンＢであると
予測判定し１例えばに富０．３〜０．８とする。Ymas+atHp+atHa+asHpm〒+aaH
nv ・-”・ (4) Here, Hp is the product plate thickness, Ha is the slab thickness, HDBte is the thickness at the end of molding,
HnvFi Thickness at the end of tentering %agb l1%ay
s as, aa 11 constants. Specifically, the above (4)
) Calculate the value yt on the left side of the equation, and if the value of Y is positive, it is predicted to be pattern A, for example -0,5, and if the value of Y is negative, KFi, pattern B. For example, it is predicted that the value is 0.3 to 0.8.
本発明に係る被圧延材の寸法測定方法のフローを第４図
に示す、即ち、ｔず、イメージ輿ンサ１２の出力から、
見かけの板幅１１に求め、この見かけの板幅ノと予め設
定されている視距＠Ｄ及び板厚ｔを用いて、前出（２）
弐により被圧延材の端部断面形状が矩形であると仮定し
た場合の板幅ｄを求める。更に、前出（４）弐尋を用い
て予め予測判定された被圧延材の端部断面形状のパター
ンに応じて、補正用板厚ｔｌ、ｔｔ、突出長さの差す、
見込み負０尋のパラメータを用いて補正係数Ｋを作成し
、前出（３）式により真の板＠ｄ′を得るものである。The flow of the method for measuring dimensions of a rolled material according to the present invention is shown in FIG. 4, namely, from the output of the image sensor 12,
Obtain the apparent board width 11, and use the apparent board width, the preset sight distance @D, and the board thickness t, as described in (2) above.
2, the plate width d is determined assuming that the end cross-sectional shape of the rolled material is rectangular. Furthermore, according to the pattern of the end cross-sectional shape of the rolled material that has been predicted and determined in advance using the above-mentioned (4) Nihiro, the correction plate thicknesses tl and tt, and the protrusion length are added,
A correction coefficient K is created using the parameter of a negative prospect of 0 fathoms, and the true plate @d' is obtained by the above-mentioned equation (3).
１配の補正Ｆｉ、例えば、マイクロコンピュータ内のソ
フト処理で行なうことができる。The correction Fi can be performed by, for example, software processing in a microcomputer.
なお前記実施例においては、被圧延材の寸法−１定方向
端部断面形状のパターンを、被圧延材の圧延工１！にお
ける圧延条件、スラブ条件等により、各被圧延材毎に予
測判定するようＫしていたが、端部断面形状のパターン
を判定する方法はこれに限定されず１例えば、被圧延材
の端部断面形状を検出する検出器を配設し、該検出器に
より被圧延材毎に実際の端部断面形状を検出し、その結
果を第４図のフローで用いたり、或いは勿論目視によっ
ても端部断面形状を判定して、Ｉ（ターンＡ、 Ｂを決
定することも可能である。In the above embodiments, the pattern of the cross-sectional shape of the end portion in a constant direction of dimension -1 of the material to be rolled is used in the rolling process 1! of the material to be rolled. However, the method for determining the pattern of the end cross-sectional shape is not limited to this, and for example, A detector is installed to detect the cross-sectional shape, and the detector detects the actual end cross-sectional shape for each rolled material, and the result can be used in the flow shown in Figure 4, or of course, the end shape can also be visually inspected. It is also possible to determine I (turns A and B) by determining the cross-sectional shape.
以上説明した通り、本発明によれば、被圧延材の板厚或
いは寸法測定方向端部断面形状の変化による寸法測定誤
差を解消することができ、被圧延材の寸法を、高精１で
、且つ、迅速に得ることができる。従って、イメージセ
ンサによる鋼板醇の平面形状の自動認識を高精縦で行な
うことができるようになるという優れた効果を有する。As explained above, according to the present invention, it is possible to eliminate dimensional measurement errors due to changes in the plate thickness of the rolled material or the end cross-sectional shape in the dimension measurement direction, and to measure the dimensions of the rolled material with high precision. Moreover, it can be obtained quickly. Therefore, it has the excellent effect that the image sensor can automatically recognize the planar shape of the steel plate with high accuracy and vertically.
菖１図は、イメージセンサを用いた寸法測定方法の厘ｍ
ｔ示す断面図、第２図は、本発明の原理を説−するため
の、端部断面形状が矩形である被圧延材における見かけ
の板幅と真の板幅の関係を示す断面図、第３図囚、（６
）は、同じく本発明の詳細な説明する丸めの、被圧延材
の端部断面形状の各パターンを示す断面図、第４図は、
本発明に係る被ＥＥＷ材の寸法測定方法のフローを示す
流れ図である。
ｌＯ・・・下部光源、１２・・・イメージセンサ。
１４・・・鋼板、１６・・・集光レンズ。
代理人 高 矢 論
（ほか１名）Diagram 1 shows the method for measuring dimensions using an image sensor.
2 is a cross-sectional view showing the relationship between the apparent width of a rolled material and the true width of a rolled material having a rectangular end cross-sectional shape, for explaining the principle of the present invention. 3 prisoners, (6
) is a cross-sectional view showing each pattern of the rounded end cross-sectional shape of the rolled material, which also explains the present invention in detail, and FIG.
1 is a flowchart showing a flow of a method for measuring dimensions of an EEW material according to the present invention. lO: Lower light source, 12: Image sensor. 14... Steel plate, 16... Condensing lens. Agent Takaya Ron (and 1 other person)
Claims (1)
し、集光レンズによりイメージセンナ上に結像させた被
圧砥材の陰影長さから、被圧延材の板幅等を一定する被
圧延材の寸法測定方法において。 前記イメージセンサによる測定値を、被圧延材の板厚及
び寸法一定方一端部断面形状に応じて補正して、被圧砥
材の寸法を求めるよ５ｔＣしたことを特徴とする被圧砥
材Ｏ寸法測定方法。 偵） 前記イメージセンナによる測定値を、まず被圧延
材の板厚に応じて補正し１次いで、被圧延＃Ｏ寸寸法測
定方法部断Ｉ形状の予測或いは認識バーーンに応じて作
成した補正係数を乗じて補正するよ５ＫＬ′＃−特許請
求の範ｌ！ｌ第１項に記載の被圧延材の寸法測定方法。(1) A material to be rolled is placed between a light source and an image sensor, and from the shadow length of the abrasive material imaged on the image sensor by a condensing lens, it is possible to determine the width of the material to be rolled, etc. In a method for measuring dimensions of rolled materials. A pressurized abrasive material O characterized in that the measured value by the image sensor is corrected according to the plate thickness and dimension constant of the rolled material and the cross-sectional shape of one end portion to determine the dimensions of the pressurized abrasive material. Dimension measurement method. First, the measured value by the image sensor is corrected according to the thickness of the material to be rolled, and then a correction coefficient created according to the prediction or recognition burn of the rolled #O dimension measurement method section is calculated. Multiply and correct 5KL'#-Claims l! 1. The method for measuring dimensions of a rolled material according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19544081A JPS5896204A (en) | 1981-12-04 | 1981-12-04 | Measuring method for size of material to be rolled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19544081A JPS5896204A (en) | 1981-12-04 | 1981-12-04 | Measuring method for size of material to be rolled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5896204A true JPS5896204A (en) | 1983-06-08 |
Family
ID=16341090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19544081A Pending JPS5896204A (en) | 1981-12-04 | 1981-12-04 | Measuring method for size of material to be rolled |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896204A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109202A (en) * | 1987-10-22 | 1989-04-26 | Fanuc Ltd | Visual sensor with parallax correction |
| JPH01116401A (en) * | 1987-10-30 | 1989-05-09 | Fanuc Ltd | Parallax correction system for visual sensor |
| JP2009175147A (en) * | 2008-01-21 | 2009-08-06 | Texmag Gmbh Vertriebsgesellschaft | Calibration element for calibrating image-forming magnification of camera, and calibration method for camera |
| CN108398088A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | A kind of strip width measure in vibration error bearing calibration |
-
1981
- 1981-12-04 JP JP19544081A patent/JPS5896204A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109202A (en) * | 1987-10-22 | 1989-04-26 | Fanuc Ltd | Visual sensor with parallax correction |
| JPH01116401A (en) * | 1987-10-30 | 1989-05-09 | Fanuc Ltd | Parallax correction system for visual sensor |
| JP2009175147A (en) * | 2008-01-21 | 2009-08-06 | Texmag Gmbh Vertriebsgesellschaft | Calibration element for calibrating image-forming magnification of camera, and calibration method for camera |
| CN108398088A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | A kind of strip width measure in vibration error bearing calibration |
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