JPH08285550A - Instrument for measuring-steel plate displacement - Google Patents
Instrument for measuring-steel plate displacementInfo
- Publication number
- JPH08285550A JPH08285550A JP11008895A JP11008895A JPH08285550A JP H08285550 A JPH08285550 A JP H08285550A JP 11008895 A JP11008895 A JP 11008895A JP 11008895 A JP11008895 A JP 11008895A JP H08285550 A JPH08285550 A JP H08285550A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- steel sheet
- displacement
- displacement distance
- steel
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼材を熱間圧延して所
定厚さの鋼板を得る熱間圧延工程において、鋼板の厚さ
方向の変位、すなわち搬送中の鋼板の上下方向の変位を
測定する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in a hot rolling process in which a steel material is hot rolled to obtain a steel sheet having a predetermined thickness, the displacement of the steel sheet in the thickness direction, that is, the vertical displacement of the steel sheet during conveyance is Regarding a measuring device.
【０００２】[0002]
【従来の技術】鋼材を熱間圧延して所定形状の鋼板を製
造するためには、鋼板の板幅や板厚を精確に測定管理す
る必要がある。このため、圧延時の鋼板の板幅測定法と
して、鋼板の輻射光を電気信号に変換して鋼板の板幅方
向の像として検出し、この出力信号を増幅したのち複数
ビットに量子化して幅測定装置に入力することにより、
相対的な板幅を得る方法が知られている。例えば、特開
昭５７−１６３８０６号公報には複数ビットに量子化さ
れた鋼板の先端形状データを一時記憶装置に格納し、こ
のデータ群に対し局所ヒストグラム演算および空間微分
演算を実行した後、その処理結果に外周追跡法を適用す
ることにより外乱データの影響を排除する形状検出装置
が開示されている。2. Description of the Related Art In order to produce a steel sheet having a predetermined shape by hot rolling a steel material, it is necessary to accurately measure and control the width and thickness of the steel sheet. Therefore, as a method for measuring the strip width of the steel sheet during rolling, the radiant light of the steel sheet is converted into an electrical signal and detected as an image in the strip width direction of the steel sheet, and the output signal is amplified and then quantized into multiple bits to obtain the width. By inputting into the measuring device,
A method for obtaining a relative board width is known. For example, in Japanese Unexamined Patent Publication No. 57-163806, the tip shape data of a steel sheet quantized into a plurality of bits is stored in a temporary storage device, a local histogram calculation and a spatial differential calculation are performed on this data group, and then the There is disclosed a shape detection device that eliminates the influence of disturbance data by applying the outer circumference tracking method to the processing result.
【０００３】また、鋼板の側端位置をイメージセンサカ
メラで検出し、その撮像出力により両側端位置を検出し
て板幅を測定する方法があり、板材の表面温度に応じて
イメージセンサカメラの絞り開度を変化させることによ
り温度変化があっても板幅を精確に測定できる方法（特
開昭62−76402 号公報）も提案されている。Further, there is a method of detecting the side edge position of a steel plate with an image sensor camera and detecting the side edge positions from the image output to measure the plate width. The aperture of the image sensor camera is determined according to the surface temperature of the plate material. A method (Japanese Patent Laid-Open No. 62-76402) has also been proposed in which the plate width can be accurately measured by changing the opening even if the temperature changes.
【０００４】鋼板の板幅ばかりでなく、その蛇行を検出
する手段としては、例えば板幅縁部の一定点の幅方向の
位置の変位を検出し、該変位より板の蛇行量を検出する
方法および装置（特開昭51−17465 号公報）が提案され
ている。As a means for detecting not only the plate width of the steel plate but also its meandering, for example, a method of detecting the displacement of the widthwise position of a certain point on the edge of the plate width and detecting the meandering amount of the plate from the displacement. And an apparatus (JP-A-51-17465) have been proposed.
【０００５】更に、圧延された鋼板の板厚測定として
は、従来から鋼板にガンマー線などの放射線を照射し
て、その放射線の透過率から測定する方法が採られてい
るが、放射線の代わりにレーザ光線を用いる方法も開発
されており、例えば特開昭６２−３５２１０号にはレー
ザー光線を照射し反射光を検出して距離を測定する第１
および第２の距離計と、第１および第２の距離計の間に
鋼板が介在しない場合の測定距離から、両距離計間に鋼
板が介在された場合に第１の距離計により測定された第
１の距離計と鋼板の一面までの第１の距離と、第２の距
離計により測定された第２の距離計と鋼板の他面までの
第２の距離とを差引くことによって鋼板の板厚を演算す
る演算手段とを備えた板厚測定装置が提案されている。Further, as a method for measuring the thickness of a rolled steel sheet, a method of irradiating the steel sheet with radiation such as gamma rays and measuring from the transmittance of the radiation has been conventionally used. A method using a laser beam has also been developed. For example, Japanese Patent Laid-Open No. 62-35210 discloses a method for irradiating a laser beam and detecting reflected light to measure a distance.
From the measurement distance when the steel plate is not interposed between the second distance meter and the first and second distance meters, the measurement is performed by the first distance meter when the steel plate is interposed between both distance meters. By subtracting the first distance to the first surface of the steel plate from the first distance meter and the second distance to the other surface of the steel plate measured by the second distance meter, There has been proposed a plate thickness measuring device including a calculation means for calculating the plate thickness.
【０００６】上記の特開昭６２−３５２１０号公報の方
法によれば、圧延中の鋼板の板厚を精度よく測定するこ
とができる。しかしながら、鋼板の板厚方向の変位、す
なわち搬送中の鋼板の上下方向の変位は測定することが
できない。According to the method disclosed in Japanese Patent Laid-Open No. 62-35210, it is possible to accurately measure the plate thickness of the steel plate during rolling. However, the displacement of the steel plate in the thickness direction, that is, the displacement of the steel plate in the vertical direction during conveyance cannot be measured.
【０００７】[0007]
【発明が解決しようとする課題】一般に圧延された鋼板
は、ロールによる搬送時に湾曲変形し、特に先端部は下
向きに変形し易い。例えば複数のロールで搬送する場合
には、図４に示すように鋼板１の先端が搬送ロール２に
衝突しながら矢印方向に上下動し、１′、１″のように
バウンドしながら移送される。この種の変形現象は、鋼
板の厚さが薄くなるほど大きくなり、搬送方向に対する
上下方向の変位も増大する。上下方向の変位が大きくな
ると鋼板の材質不良が生じるばかりでなく圧延ロールの
負荷が増大し、更に搬送ロール内への巻き込みが起こる
危険があるため操業トラブルの大きな発生原因となる
が、従来の技術ではこのような上下方向の変位を測定す
る手段がなかったため前記の操業トラブルを未然に防止
することができなかった。Generally, a rolled steel sheet is bent and deformed when it is conveyed by rolls, and especially the tip portion is easily deformed downward. For example, when carrying by a plurality of rolls, as shown in FIG. 4, the front end of the steel plate 1 collides with the carrying roll 2 and moves up and down in the direction of the arrow, and is transported while bouncing like 1 ′, 1 ″. This type of deformation phenomenon increases as the thickness of the steel sheet becomes thinner, and the vertical displacement with respect to the transport direction also increases. However, since there is no risk of measuring such displacement in the vertical direction in the conventional technology, the above-mentioned operational troubles are caused in advance. Could not be prevented.
【０００８】本発明の目的は、圧延ラインを搬送中の鋼
板先端部がロールに衝突し、搬送ロール上を鋼板がバウ
ンドし、上下動しながら搬送される際に生じる搬送方向
に対する上下方向の変位を精確に測定することのできる
鋼板の変位測定装置を提供することにある。An object of the present invention is to cause vertical displacement with respect to the transport direction which occurs when the leading end of a steel sheet during transport on a rolling line collides with a roll and the steel plate bounces on the transport roll and is transported while moving up and down. An object of the present invention is to provide a steel plate displacement measuring device capable of accurately measuring
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
めの、本発明による鋼板の変位測定装置は、熱間圧延ラ
インを搬送中の鋼板側面部から放出される放射光を鋼板
と水平方向の位置に設置した２次元ＣＣＤカメラにより
検出する検出手段と、検出された出力信号により鋼板の
側面形状を検知して保持するフレームメモリーと、フレ
ームメモリーの静止画像から鋼板が変形せずに搬送され
ているとした場合の仮想線を求めて鋼板と仮想線との変
位距離を計算する演算手段とを備え、前記の演算手段は
鋼板先端部および変位距離が最大となる点の座標位置を
算出し、搬送中の鋼板先端部および変位距離が最大とな
る点における仮想線との変位距離を演算処理する機構の
装置であることを構成上の特徴とする。In order to achieve the above-mentioned object, a steel sheet displacement measuring device according to the present invention is a device for measuring the radiant light emitted from a side surface portion of a steel sheet being conveyed through a hot rolling line in a horizontal direction with the steel sheet. The detection means for detecting by the two-dimensional CCD camera installed at the position, the frame memory for detecting and holding the side surface shape of the steel sheet by the detected output signal, and the steel sheet is conveyed from the still image of the frame memory without being deformed. And a calculation means for calculating the displacement distance between the steel plate and the virtual line in the case of the above, and the calculation means calculates the coordinate position of the tip of the steel plate and the point where the displacement distance is maximum. The structural feature is that it is a device of a mechanism that performs a calculation process of the displacement distance from the phantom line at the tip of the steel plate being conveyed and at the point where the displacement distance is maximum.
【００１０】図１は本発明の測定装置を例示した斜視図
で、鋼板１は熱間圧延ラインを矢印の方向（右から左）
に搬送されている。２次元ＣＣＤカメラ３は鋼板１の側
面と同一高さの水平位置に設置されており、鋼板１の側
面部の測定対象領域Ｘ〜Ｘ′から放出される放射光は２
次元ＣＣＤカメラ３により観測され、放射光が検出され
る。なお、２次元ＣＣＤカメラ３は近赤外領域に感度を
有するようにフィルター等により調整しておくことが検
出精度向上のために好ましい。FIG. 1 is a perspective view exemplifying the measuring apparatus of the present invention, in which a steel sheet 1 has a hot rolling line in the direction of the arrow (from right to left).
Have been transported to. The two-dimensional CCD camera 3 is installed at the horizontal position at the same height as the side surface of the steel plate 1, and the radiated light emitted from the measurement target regions X to X ′ on the side surface of the steel plate 1 is 2
It is observed by the three-dimensional CCD camera 3 and the emitted light is detected. The two-dimensional CCD camera 3 is preferably adjusted with a filter or the like so as to have sensitivity in the near infrared region in order to improve detection accuracy.
【００１１】２次元ＣＣＤカメラ３により検出された放
射光は、フレームメモリー４に入力され、搬送中の鋼板
１の側面形状が検知される。この場合、検知能力を高め
るためにフレームメモリー４の水平分解能を５１２ピク
セル以上とすることが好ましい。フレームメモリー４の
左端には鋼板検知ラインが設けられ、これにより他のト
リガパルス等を必要としないでシステム構築でき、また
搬送中の鋼板の映像を一定位置に固定することができ
る。そして、鋼板検知ラインを常時スキャンして定めら
れた閾値を越える点が連続して認められた場合に鋼板１
を検知したものとしてその映像をモニター６上に静止画
像として表示する。The radiated light detected by the two-dimensional CCD camera 3 is input to the frame memory 4 and the side surface shape of the steel plate 1 being conveyed is detected. In this case, it is preferable that the horizontal resolution of the frame memory 4 is 512 pixels or more in order to enhance the detection capability. A steel plate detection line is provided at the left end of the frame memory 4, so that the system can be constructed without the need for other trigger pulses and the image of the steel plate being conveyed can be fixed at a fixed position. Then, when the steel plate detection line is constantly scanned and points exceeding a predetermined threshold are continuously recognized, the steel plate 1
Is detected and the image is displayed on the monitor 6 as a still image.
【００１２】フレームメモリー４で捉えた鋼板１の側面
形状の静止画像から、ＣＰＵ５により搬送ロール上の鋼
板１が変形せずに搬送されているとした場合の仮想線を
求めて、鋼板１と仮想線との変位距離を計算する機構の
演算手段により鋼板１の変位距離が測定される。なお、
同期作動するように調整された２次元ＣＣＤカメラ３お
よびフレームメモリー４を各２式設置して、測定対象領
域の半分づつを各測定視野とすることによって更に測定
精度の向上を図ることもできる。From the still image of the side surface shape of the steel plate 1 captured by the frame memory 4, the CPU 5 obtains an imaginary line when the steel plate 1 on the transport roll is conveyed without being deformed, and the virtual line The displacement distance of the steel plate 1 is measured by the calculation means of the mechanism that calculates the displacement distance from the line. In addition,
It is also possible to further improve the measurement accuracy by installing two sets of the two-dimensional CCD cameras 3 and the frame memories 4 which are adjusted so as to operate in synchronization, and making half of the measurement target region each of the measurement fields of view.
【００１３】演算手段による変位測定は、次の手順によ
り行われる。搬送ロール上の鋼板１は図４に示したよう
にロールによりバウンドしながら上下動を繰り返しつつ
搬送されるが、搬送中の鋼板１の側面部の形態はフレー
ムメモリー４により静止画像化される。このようにして
画像処理された搬送中の鋼板１の側面部の形態を図２に
例示した。図２において鋼板１のＡ〜Ｂ区間は変形せず
に直進的に搬送されている鋼板側面部を示し、Ａを過ぎ
てから上方に湾曲が始まり、点Ｐの位置で最大のふくら
み変形が生じたのち先端部Ｅにかけて次第に下方に変形
する形態を示している。なお左端は鋼板検出ラインであ
る。The displacement measurement by the calculation means is performed by the following procedure. As shown in FIG. 4, the steel sheet 1 on the transport roll is transported while bouncing by the roll and repeating the vertical movement. The shape of the side surface portion of the steel sheet 1 being transported is made into a still image by the frame memory 4. The form of the side surface portion of the steel plate 1 which is image-processed and is thus conveyed is illustrated in FIG. In FIG. 2, sections A to B of the steel sheet 1 show the side surface portions of the steel sheet which are conveyed straight without being deformed, and the curve starts to rise upward after passing A, and the maximum bulge deformation occurs at the position of the point P. After that, a shape is shown in which the tip portion E gradually deforms downward. The left end is the steel plate detection line.
【００１４】図２において、点線Ｌは上記Ａ〜Ｂ間の直
進部を利用して最小２乗法により求めた鋼板１に変形を
生じていないとした場合の仮想線である。鋼板１の先端
部Ｅおよび最大のふくらみ変形が生じている、すなわち
変位距離が最大となる点Ｐの座標位置を算出し、仮想線
Ｌとの変位距離Ｏ1 ＥおよびＯ0 Ｐが演算される。In FIG. 2, a dotted line L is an imaginary line when the steel plate 1 obtained by the method of least squares using the straight section between A and B is not deformed. The coordinate position of the tip portion E of the steel plate 1 and the point P at which the maximum bulge deformation occurs, that is, the displacement distance becomes maximum, is calculated, and the displacement distances O 1 E and O 0 P with respect to the virtual line L are calculated. .
【００１５】[0015]
【作用】本発明の鋼板の変位測定装置によれば、熱間圧
延ラインを搬送中の鋼板の側面部から放出される放射光
を２次元ＣＣＤカメラにより検出し、検出信号に基づき
フレームメモリーが鋼板先端部が一定位置に到達したと
見做せる時点で映像を停止して静止画像を得、該静止画
像を基に鋼板が変形せずに直進的に搬送されていると見
做せる搬送状態を示す仮想線と鋼板との変位距離を演算
するものであるから、鋼板の搬送ロール上のバウンドに
よる上下動の影響を回避した鋼板１の先端部および最大
変形部の変位距離ならびに曲がりはじめの位置などの変
位測定が可能となる。According to the steel sheet displacement measuring device of the present invention, the radiant light emitted from the side surface of the steel sheet which is being conveyed through the hot rolling line is detected by the two-dimensional CCD camera, and the frame memory stores the steel sheet on the basis of the detection signal. At the time when it can be considered that the tip has reached a certain position, the video is stopped to obtain a still image, and based on the still image, the steel sheet is conveyed straight without being deformed. Since the displacement distance between the imaginary line shown and the steel plate is calculated, the displacement distance of the tip portion and the maximum deformation portion of the steel plate 1 and the position of the beginning of bending, which avoids the influence of vertical movement due to the bouncing of the steel plate on the transport roll, etc. It is possible to measure the displacement of.
【００１６】このようにして、鋼板の搬送方向に対する
上下方向の変位を的確に測定することができるから、熱
間圧延ラインを搬送中の鋼板の変形による搬送トラブル
を未然に防止するための操業パラメータとして活用する
ことができる。In this way, since the vertical displacement of the steel sheet with respect to the conveying direction can be accurately measured, the operating parameter for preventing the conveying trouble due to the deformation of the steel sheet during the conveyance on the hot rolling line. Can be used as
【００１７】[0017]
【実施例】以下、本発明の実施例を詳細に説明する。EXAMPLES Examples of the present invention will be described in detail below.
【００１８】図１に示した測定装置により、板厚２０m
m、長さ４０m 、鋼材温度６００〜８００℃、搬送速度
０．５m/秒で搬送中の鋼板について測定した。２次元Ｃ
ＣＤカメラはｆ＝１６mmのＣマウントレンズを取り付け
た工業用白黒カメラ、フレームメモリーはＮＴＳＣ入力
で分解能５１２×５１２ピクセル、またＣＰＵはＮＥＣ
９８００シリーズを用いた。カメラは１／１０００の電
子シャッターをかけ、測定鋼板との距離は１m とした。
なお、測定は図３に示すアルゴリズムにしたがって行っ
た。With the measuring device shown in FIG. 1, a plate thickness of 20 m
The measurement was performed on a steel sheet being conveyed at m, a length of 40 m, a steel material temperature of 600 to 800 ° C., and a conveying speed of 0.5 m / sec. Two-dimensional C
The CD camera is an industrial black and white camera with a f = 16mm C-mount lens attached, the frame memory is NTSC input and the resolution is 512 × 512 pixels, and the CPU is NEC.
The 9800 series was used. The camera was equipped with a 1/1000 electronic shutter, and the distance to the measurement steel plate was 1 m.
The measurement was performed according to the algorithm shown in FIG.
【００１９】フレームメモリーは通常１／３０秒で映像
の取り込みを完了するが、この間も鋼板は動いているの
でシャッタースピードを上げてブレを抑えるとともに偶
奇フィールド間での露出タイミングやデータ処理時間を
的確に考慮しなければ、検出ラインを大きくはずれた静
止画像を得てしまう可能性がある。このため図３のアル
ゴリズムではフレームメモリーの初期化後、先ず偶数フ
ィールドの取り込みを行い、次に奇数フィールドの取り
込み指令をリードウエアに出した直後に初めに取り込ん
だ偶数フィールドに鋼板が検出されたかどうかのチェッ
クを行う。すなわち、奇数フィールドの取り込みを行い
ながら、偶数フィールドのチェックを並行して行うこと
により、偶数（又は奇数）フィールドの取り込み指令、
奇数（又は偶数）フィールドのチェックを繰り返し行う
ことにより、鋼板が検出された瞬間がキャッチされる。The frame memory normally completes capturing the image in 1/30 seconds, but the steel plate is still moving during this period, so the shutter speed is increased to suppress blurring and the exposure timing and data processing time between even and odd fields are accurately set. If not taken into consideration, there is a possibility that a still image with a large deviation from the detection line may be obtained. Therefore, in the algorithm of FIG. 3, after the frame memory is initialized, the even field is first captured, and immediately after the odd field capture command is issued to the leadware, whether the steel plate is detected in the first even field captured is detected. Check. That is, while the odd-numbered fields are being fetched, the even-numbered fields are checked in parallel to obtain an even-numbered (or odd-numbered) field fetch command,
By repeating the check of the odd (or even) field, the moment when the steel plate is detected is caught.
【００２０】このようにして鋼板を検出した最初のフィ
ールドを解析用フィールドとして静止画像化し、フレー
ムメモリーの左端からスキャンを行い、鋼板先端部の座
標を算出する。次にその右側で変形のない鋼板部分すな
わち鋼板の直進部分から最小２乗法により仮想線を求
め、画像を走査して仮想線より変位の最も大きい位置の
座標を算出する。これらの座標から鋼板先端部と仮想線
までの変位距離および変位の最も大きい点と仮想線まで
の変位距離が演算される。The first field in which the steel sheet is detected in this manner is used as a field for analysis to form a still image, and scanning is performed from the left end of the frame memory to calculate the coordinates of the tip of the steel sheet. Next, an imaginary line is obtained by the least square method from the steel plate portion without deformation on the right side, that is, the straight running portion of the steel plate, and the image is scanned to calculate the coordinates of the position having the largest displacement from the imaginary line. From these coordinates, the displacement distance from the tip of the steel plate to the imaginary line and the displacement distance from the point with the largest displacement to the imaginary line are calculated.
【００２１】このようにして測定された変位距離を、搬
送ライン上で実際に鋼板を停止させて実測した測定値と
対比して表１に示した。表１の結果から本発明の変位測
定装置による測定値は、実測値に極めて近い値が得られ
ることが判る。The displacement distances measured in this way are shown in Table 1 in comparison with the measurement values actually measured by actually stopping the steel sheet on the conveying line. From the results in Table 1, it can be seen that the measured value by the displacement measuring device of the present invention is very close to the measured value.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【発明の効果】以上のとおり、本発明の鋼板の変位測定
装置によれば、２次元ＣＣＤカメラを用い搬送中の鋼板
が一定位置に搬送されたところで映像を停止して、鋼板
側面部の形態を示す静止画像から鋼板先端部および最大
変位点における仮想線との距離を演算することにより、
ライン搬送中の鋼板の上下方向の変位距離を精確に測定
することができるので、熱間圧延ラインの運転管理の上
で極めて有用である。As described above, according to the steel sheet displacement measuring apparatus of the present invention, the image is stopped when the steel sheet being conveyed is conveyed to a certain position by using the two-dimensional CCD camera, and the shape of the side surface of the steel sheet is changed. By calculating the distance between the steel plate tip and the virtual line at the maximum displacement point from the still image showing
Since it is possible to accurately measure the vertical displacement distance of the steel sheet during line transportation, it is extremely useful for operation management of the hot rolling line.
【図１】本発明の鋼板の変位測定装置を例示した斜視図
である。FIG. 1 is a perspective view illustrating a steel sheet displacement measuring device according to the present invention.
【図２】鋼板の側面部の形態を示す静止画面を模式的に
例示した断面図である。FIG. 2 is a cross-sectional view schematically illustrating a still screen showing a form of a side surface portion of a steel plate.
【図３】本発明の検出システムのフローシートを示した
系統図である。FIG. 3 is a system diagram showing a flow sheet of the detection system of the present invention.
【図４】搬送中の鋼板の側面部の形態を模式的に例示し
た説明図である。FIG. 4 is an explanatory view schematically illustrating a form of a side surface portion of a steel sheet being conveyed.
１ 鋼板 ２ 搬送ロール ３ ２次元ＣＣＤカメラ ４ フレームメモリー ５ ＣＰＵ ６ モニター画面 1 Steel plate 2 Transport roll 3 Two-dimensional CCD camera 4 Frame memory 5 CPU 6 Monitor screen
Claims (1)
ら放出される放射光を鋼板と水平方向の位置に設置した
２次元ＣＣＤカメラにより検出する検出手段と、検出さ
れた出力信号により鋼板の側面形状を検知して保持する
フレームメモリーと、フレームメモリーの静止画像から
鋼板が変形せずに搬送されているとした場合の仮想線を
求めて鋼板と仮想線との変位距離を計算する演算手段と
を備え、前記の演算手段は鋼板先端部および変位距離が
最大となる点の座標位置を算出し、搬送中の鋼板先端部
および変位距離が最大となる点における仮想線との変位
距離を演算処理する機構の装置であることを特徴とする
鋼板の変位測定装置。1. A detecting means for detecting a radiant light emitted from a side surface portion of a steel sheet which is being conveyed through a hot rolling line by a two-dimensional CCD camera installed at a horizontal position with respect to the steel sheet, and a steel sheet according to the detected output signal. Calculation of the displacement distance between the steel plate and the virtual line by obtaining the virtual line when the steel plate is conveyed without deformation from the frame memory that detects and holds the side shape of the steel plate and the still image of the frame memory Means for calculating the coordinate position of the steel plate tip and the point at which the displacement distance is maximized, and the displacement distance between the steel plate tip during conveyance and the imaginary line at the point where the displacement distance is maximized is calculated. A steel sheet displacement measuring device, which is a device having a mechanism for performing arithmetic processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008895A JPH08285550A (en) | 1995-04-10 | 1995-04-10 | Instrument for measuring-steel plate displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008895A JPH08285550A (en) | 1995-04-10 | 1995-04-10 | Instrument for measuring-steel plate displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08285550A true JPH08285550A (en) | 1996-11-01 |
Family
ID=14526726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11008895A Pending JPH08285550A (en) | 1995-04-10 | 1995-04-10 | Instrument for measuring-steel plate displacement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08285550A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188907A (en) * | 2000-10-03 | 2002-07-05 | Nkk Corp | Sheet shape control device and manufacturing method for plated sheet |
| JP2009250723A (en) * | 2008-04-03 | 2009-10-29 | Nippon Steel Corp | System and method for detecting warp of steel plate |
| JP2012044289A (en) * | 2010-08-16 | 2012-03-01 | Shimatec:Kk | Imaging apparatus, and remote measurement apparatus having imaging apparatus |
| CN103697814A (en) * | 2014-01-02 | 2014-04-02 | 东华大学 | Reflecting on-line measuring device and method for textile material spherical compression surface morphology |
| CN103727893A (en) * | 2014-01-02 | 2014-04-16 | 东华大学 | Device and method for online measurement of form of spherically-compressed surface of textile material |
| JP2017215187A (en) * | 2016-05-31 | 2017-12-07 | トヨタ車体株式会社 | Warpage measurement method of workpiece and warpage measurement method |
-
1995
- 1995-04-10 JP JP11008895A patent/JPH08285550A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188907A (en) * | 2000-10-03 | 2002-07-05 | Nkk Corp | Sheet shape control device and manufacturing method for plated sheet |
| JP2009250723A (en) * | 2008-04-03 | 2009-10-29 | Nippon Steel Corp | System and method for detecting warp of steel plate |
| JP2012044289A (en) * | 2010-08-16 | 2012-03-01 | Shimatec:Kk | Imaging apparatus, and remote measurement apparatus having imaging apparatus |
| CN103697814A (en) * | 2014-01-02 | 2014-04-02 | 东华大学 | Reflecting on-line measuring device and method for textile material spherical compression surface morphology |
| CN103727893A (en) * | 2014-01-02 | 2014-04-16 | 东华大学 | Device and method for online measurement of form of spherically-compressed surface of textile material |
| JP2017215187A (en) * | 2016-05-31 | 2017-12-07 | トヨタ車体株式会社 | Warpage measurement method of workpiece and warpage measurement method |
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