JPS5842904A - Length measuring device - Google Patents
Length measuring deviceInfo
- Publication number
- JPS5842904A JPS5842904A JP14157481A JP14157481A JPS5842904A JP S5842904 A JPS5842904 A JP S5842904A JP 14157481 A JP14157481 A JP 14157481A JP 14157481 A JP14157481 A JP 14157481A JP S5842904 A JPS5842904 A JP S5842904A
- Authority
- JP
- Japan
- Prior art keywords
- measurement
- length measuring
- length
- partial
- rolled 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、測長装置に係り、特に、圧延鋼板等の幅広材
の板幅を測定するのに好適な、測長装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a length measuring device, and particularly to a length measuring device suitable for measuring the width of a wide material such as a rolled steel plate.
一般に、鋼板等の板材の圧延に際しては、その板幅を監
視する必要があり、従って従来から、稽々の方法による
板幅測定が行なわれている。特に、近年開発された、測
定方向に走査される光線ビームを発生する平行走査光線
ビーム発生源２．測定対象を通過し九前記光線ビームの
明暗を検出する受光器とを備え、該受光器出力に応じて
前記光線ビームの明部又は暗部の時間の長さから測定対
象の長さを検出する高速度走査型レーザ測長機を用いれ
ば、非接触で圧延鋼板の板幅を測定でき、圧延鋼板が高
温の熱間圧延鋼板である場合にも適用できるものである
。しかしながら、一般に、このようなレーザ測長機は、
その走査幅が限られており、一台のレーザ測長様のみで
、板幅６００〜１５００ｆｉ程度の圧延鋼板の全板幅を
測定することは困難であった。なお、−前記のようなレ
ーザ測長機を圧延鋼板の測定“方向両端部近傍、即ち、
側端部近傍にそれぞれ配置し、各レーザ測長機出力の圧
延鋼板の側端部位置と、各レーザ測長機の配設間隔から
圧蝉鋼板の板幅を求めることも考えらｉ、６７５“・−
＊ＫｆＥ、ｇｘａ’＆゛、ｑａａａｘｔｃｎ−７４板幅
の偏差変動による圧延鋼板側端部位置の微小な変化の他
に、板幅の設定４変更或いは圧延鋼板のコ
蛇行等による圧延鋼板側端部位置の大幅な変化があり、
走査幅が狭いレーザ測長機では、板幅の設定変更或いは
圧延鋼板の蛇行があると、圧延鋼板の側端部位置がレー
ザ測長様の測長範囲外に出てしまい、圧延鋼板の板幅な
測定することが不可能となる場合があった。Generally, when rolling a plate material such as a steel plate, it is necessary to monitor the width of the plate, and therefore the width of the plate has been measured by a conventional method. In particular, recently developed parallel scanning light beam sources 2. and a light receiver for detecting the brightness or darkness of the light beam passing through the measurement object, and detecting the length of the measurement object from the length of time of the bright part or the dark part of the light beam according to the output of the light receiver. If a speed scanning laser length measuring machine is used, the width of a rolled steel plate can be measured without contact, and it can be applied even when the rolled steel plate is a hot rolled steel plate at a high temperature. However, in general, such laser length measuring machines are
The scanning width is limited, and it is difficult to measure the entire width of a rolled steel plate having a width of about 600 to 1500 fi using only one laser length measuring device. It should be noted that - the laser length measuring machine as described above is used to measure the rolled steel plate near both ends in the direction, i.e.
It is also conceivable that the width of the rolled steel plate could be determined from the position of the side edge of the rolled steel plate output by each laser length measuring machine and the spacing between the laser length measuring machines.675 “・−
*KfE, gxa'&゛, qaaaxtcn-74 In addition to minute changes in the position of the edge of the rolled steel plate due to deviation fluctuations in the plate width, the edge of the rolled steel plate due to changes in the plate width setting or meandering of the rolled steel plate, etc. There is a significant change in position,
With a laser length measuring machine with a narrow scanning width, if the plate width setting is changed or the rolled steel plate meanders, the side edge position of the rolled steel plate will be outside the length measurement range of the laser length measurement method, and the rolled steel plate will In some cases, it was impossible to make accurate measurements.
本発明は、前記従来の欠点を解消するべくなされたもの
で、一定対象の長さの大幅な変動にも追従して、測定対
象の長さを正確に測定することができる測長装置を提供
することを目的とする。The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides a length measuring device that can accurately measure the length of an object by following large variations in the length of a fixed object. The purpose is to
本発明は、測長装置において、測定対象の測定方向両端
部近傍にそれぞれ配置され、測定対象の分測長手段の相
対移動量を検出する相対移動量検出手段とを備え、測定
対象の測定方向端部位置が、対応する部分測長手段の測
長範囲外となる恐れがないときは、当該部分測長手段を
移動することなく、一方、測、！対象の測定方向端部位
置が、対応・□・１゜
する部分測長手段の測長範囲外となる恐れがあるときは
、測定方向端部位置が測長範囲内の所定値となるよう当
該部分測長手段を移動して、その時の部分測長手段及び
相対移動量検出手段の出力から、測定対象の長さを求め
るようにして、前記目的を達成したものである。The present invention provides a length measuring device that includes relative movement amount detection means that are arranged near both ends of the measurement object in the measurement direction and detect the relative movement amount of the length measurement means for the measurement object. When there is no risk that the end position will be outside the length measurement range of the corresponding partial length measuring means, the measurement is performed without moving the partial length measuring means. If there is a possibility that the end position in the measurement direction of the target is outside the length measurement range of the corresponding partial length measuring means, adjust the measurement direction so that the end position in the measurement direction becomes a predetermined value within the length measurement range. The above object is achieved by moving the partial length measuring means and determining the length of the object to be measured from the outputs of the partial length measuring means and the relative movement amount detecting means at that time.
又、前記部分測長手段を、測定方向に走査される光線ビ
ームを発生する平行走査、光線ビーム発生源と、測定対
象の端部近傍を通過、した前記光線ビームの明暗を検−
出する受光器とを備え、該受光器出力に応じて前記光線
ビームの明部又は暗部の時間の長さから測定対象の測、
定方向端部位置を検出する高速度走査型レーザ測長機と
したものである。Further, the partial length measuring means is scanned in parallel to generate a light beam that is scanned in the measurement direction, and the light and darkness of the light beam that passes through the light beam generation source and the vicinity of the end of the object to be measured is detected.
measuring the object to be measured from the length of time of the bright or dark part of the light beam according to the output of the light receiver;
This is a high-speed scanning laser length measuring machine that detects the end position in a fixed direction.
更に、前記相対移動量検出手段を、各部分測長手段の位
置をそれぞれ検出するための、一対の光電型測長機とし
だものである。Further, the relative movement amount detecting means is a pair of photoelectric length measuring machines for respectively detecting the position of each partial length measuring means.
以下図面を参照して、本発明の実施例を詳細に説明する
。Embodiments of the present invention will be described in detail below with reference to the drawings.
本実施例は、第１図に示す如く、圧延機等の幅制御装置
１０により板幅が制御されている、板幅６００〜１５０
０１１１程度ｐ圧延鋼板１２の板幅の測定に本発明を適
用したもので、圧延鋼板１２の両側端部近傍にそれぞれ
配置され、圧延鋼板１２の側端部位置をそれぞれ検出す
る、測定架台１４上を板幅方向にそれぞれ移動可能な、
一対の部分測長ユニット１６．１８と、該部分測長ユニ
ット１６．１８を、測定架台１４に対してそれぞれ移動
させるための、モータ２４．２６、送りねじ２８１．３
０からなる測長ユニット駆動装置２０．２２と、紋測長
ユニット駆動装置２０，２２のモータ２４．２６の回転
量から、前記部分測長ユニット１６．１８の移動量をそ
れぞれ検出する、一対の、例えば光電式の゛ロータリエ
ンコ、−ダ３２．３４と、前記部分測長ユニツ）１６．
１８が測定架台上の移動限度位置埠到達したことを検知
するためのセンサ３５ａ％ｂ、ｃ、ｄと、前記部分測長
ユニット１６．１８の出力から算出される板幅変化率及
び測長範囲内の側端位置に応じて１．圧延鋼板１２の側
端部位置が、対応する部分測長ユニットの測長範囲外と
なる恐れがない時は、当該部分測長ユニットを移動する
ことなく、一方、圧延鋼板１２０側端部位置が、対応す
る部分測長ユニットの測長範囲外となる恐れがあるとき
は、側端部位置が測長範囲内の所定値となるよう、アン
プ３６．３８を介して前記測長ユ・ニット駆動装置２０
，２２のモータ２４．２６により前記部分測長エニン）
１６．１８を移動限度内で移動して、その時の部分測長
エニン）１６．１８及びロータリエンコーダ３２．３４
出カから圧延鋼板１２の板＠Ｎを求めると共に、所定の
幅制御信号を前記幅制御装置１０に出方する駆動演算装
置４ｏとから構成されている。In this example, as shown in FIG.
Approximately 0111p The present invention is applied to the measurement of the plate width of the rolled steel plate 12, and the measurement stand 14 is placed near both side ends of the rolled steel plate 12 and detects the side edge positions of the rolled steel plate 12. movable in the board width direction,
A pair of partial length measuring units 16.18 and a motor 24.26 and a feed screw 281.3 for moving the partial length measuring units 16.18 with respect to the measuring stand 14, respectively.
A pair of length measuring unit drive devices 20.22 and 24.26, each of which detects the amount of movement of the partial length measuring unit 16.18 from the amount of rotation of the motor 24.26 of the length measuring unit drive device 20.22 consisting of 0. , for example, a photoelectric rotary encoder (32.34) and the partial length measurement unit)16.
Sensors 35a%b, c, and d for detecting that 18 has reached the movement limit position on the measurement stand, and the plate width change rate and length measurement range calculated from the output of the partial length measurement unit 16.18. 1. Depending on the position of the inner side edge. When there is no possibility that the side end position of the rolled steel plate 12 will be outside the length measurement range of the corresponding partial length measuring unit, the side end position of the rolled steel plate 120 can be adjusted without moving the partial length measuring unit. , when there is a possibility that the length of the corresponding partial length measuring unit is outside the length measuring range, the length measuring unit is driven via the amplifiers 36 and 38 so that the side end position becomes a predetermined value within the length measuring range. device 20
, 22 motors 24, 26)
Move 16.18 within the movement limit and measure the partial length at that time) 16.18 and rotary encoder 32.34
It is comprised of a drive calculation device 4o which determines the plate @N of the rolled steel plate 12 from the output and outputs a predetermined width control signal to the width control device 10.
前記部分測長エニン）１６、ｉｓａ、いずれも、第２図
に詳細に示す如く、レーザビーム５２を発生するレーザ
管５ｏと、固定ミラー５４にょシ反射されたレーザビー
ム５２を走査ビーム５７に変換するための回転ミラー５
６と、この走査ビーム５７を平行走査光線ビーム６０に
変換するための■。As shown in detail in FIG. 2, both of the partial length measurement Enin) 16 and isa include a laser tube 5o that generates a laser beam 52, and a fixed mirror 54 that converts the reflected laser beam 52 into a scanning beam 57. Rotating mirror 5 for
6, and ■ for converting this scanning beam 57 into a parallel scanning light beam 60.
６０を集光するための集光レンズ６２と、該集光レンズ
６２により集光された走査ビーム６３の明暗を検知する
ための、集光レンズ６２の焦点位置に配設された受光素
子６４と、該受光素子６４の出力を増幅するプリアンプ
６６と、該プリアンプ６６の出力に応じて、圧延鋼板１
２が走査されている時間ｔの間だけ出方電圧■を発生す
るセグメント選択回路６Ｂと、クロックパルスＣＰを発
生するクロックパルス発振器７ｏと、該クロックパルス
発振器７ｏ出カのクロックパルスＣＰを、前記セグメン
ト選択回路６８の出方電圧Ｖが発生している時間ｔだけ
通過するゲート回路７２と、該ゲート回路７２出カの、
圧延鋼板１２０側端部位置に対応した時間ｔに対応する
クロックパルスＰを計数して側端部位置信号を出方する
計数回路７４と、前記クロックパルス発振器７ｏ出カの
クロッ諺パルスＣＰと同期して正弦波を発生する同期正
弦波発振器７６と、該同期正弦波発振器７６出力を増幅
するパワーアンプ７８と、該パワーアンプ７８の出力に
応じて前記回転ミラー５６を回転駆動する同期モータ８
ｏとから構成される、高速度走査型レーザ測長機とされ
ている。a condenser lens 62 for condensing the scanning beam 60; and a light receiving element 64 disposed at the focal position of the condenser lens 62 for detecting the brightness of the scanning beam 63 condensed by the condenser lens 62. , a preamplifier 66 that amplifies the output of the light receiving element 64; and a preamplifier 66 that amplifies the output of the light receiving element 64;
A segment selection circuit 6B that generates the output voltage ■ only during the time t during which 2 is being scanned, a clock pulse oscillator 7o that generates the clock pulse CP, and a clock pulse CP output from the clock pulse oscillator 7o as described above. A gate circuit 72 through which the output voltage V of the segment selection circuit 68 is generated for the time t, and the output of the gate circuit 72.
A counting circuit 74 that counts clock pulses P corresponding to time t corresponding to the side edge position of the rolled steel plate 120 and outputs a side edge position signal, and is synchronized with the clock pulse CP output from the clock pulse oscillator 7o. a synchronous sine wave oscillator 76 that generates a sine wave, a power amplifier 78 that amplifies the output of the synchronous sine wave oscillator 76, and a synchronous motor 8 that rotationally drives the rotating mirror 56 in accordance with the output of the power amplifier 78.
It is a high-speed scanning laser length measuring machine consisting of:
この高速度走査型レーザ測長機においては、レーザ管５
０からレーザビーム５２を固定ミラ−５４に向けて発振
し、この固定ミラー５４により反射されたレーザービー
ム５２を回転ミラー５６によって走査ビーム５７に変換
し、この走査ビーム５７をコリンータレンズ５８によっ
て平行走査光線ビーム６０に変換し、この平行走査光線
ビーム６０によプコリメータレンズ５８と集光レンズ６
２の間に配置した圧延鋼板１２の側端部近傍を高速走査
し、その時圧延鋼板１２によって生じる明部又は暗部の
時間の長さから、圧延鋼板１２の側端部位置を測定する
ものである。即ち、平行走査光線ビーム６０の明ＮＦｉ
、集光レンズ６２の焦点位置にある受光素子６４の出力
電圧の変化となって検出され、該受光素子６４からの信
号は、プリアンプ６６に入力され、ここで増幅された後
、セグメント選択回路６８に送られる。このセグメント
選択回路６８は、受光素子６４の出力電圧から圧延鋼板
１２が走査されている時間ｔの間だけ、ゲート回路７２
を開くための電圧Ｖを発生、して。In this high-speed scanning laser length measuring machine, the laser tube 5
A laser beam 52 is oscillated from zero toward a fixed mirror 54, the laser beam 52 reflected by the fixed mirror 54 is converted into a scanning beam 57 by a rotating mirror 56, and this scanning beam 57 is converted into a parallel scanning beam by a colinter lens 58. The parallel scanning light beam 60 is converted into a beam 60, and the collimator lens 58 and the condenser lens 6
The position of the side edge of the rolled steel plate 12 is measured by scanning the vicinity of the side edge of the rolled steel plate 12 placed between 2 at high speed, and measuring the length of the bright or dark area generated by the rolled steel plate 12 at that time. . That is, the bright NFi of the parallel scanning light beam 60
, is detected as a change in the output voltage of the light receiving element 64 located at the focal position of the condensing lens 62, and the signal from the light receiving element 64 is input to the preamplifier 66, where it is amplified and then sent to the segment selection circuit 68. sent to. This segment selection circuit 68 is connected to the gate circuit 72 only during the time t during which the rolled steel plate 12 is scanned from the output voltage of the light receiving element 64.
Generate a voltage V to open.
ゲート回路７２に出力するようｋされてでる。このゲー
ト回路７２には、クロックパルス発振器７０からクロッ
クパルスＣＰが入力されているので、ゲート回路７２か
らは、圧延鋼板１２０側端部位置く対応した時間ｔＫ対
応するクロックパルスＰを計数回路７４に入力する。計
数回路７４は、仁のクセツクパルスＰを計数して、計数
信号、即ち、側端部位置信号を出方する。一方、前記回
転ミラー５６は、前記クロックパルス発振器７ｏ出カと
同期して正弦波を発生する同期正弦波発振器７６及びパ
ワーアンプ７８の出力によシ同期駆動声れている同期モ
ータ８ｏにより、前記クロックパルス発振器７ｏ出カの
クロックパルスＣＰと同期して回転され、測定精度を維
持するよう咳されている。It is output to the gate circuit 72. Since the clock pulse CP from the clock pulse oscillator 70 is input to this gate circuit 72, the clock pulse P corresponding to the time tK corresponding to the end position of the rolled steel plate 120 is input from the gate circuit 72 to the counting circuit 74. do. The counting circuit 74 counts the number of odd pulses P and outputs a count signal, that is, a side edge position signal. On the other hand, the rotating mirror 56 is driven by a synchronous motor 8o which is synchronously driven by the output of a power amplifier 78 and a synchronous sine wave oscillator 76 which generates a sine wave in synchronization with the output of the clock pulse oscillator 7o. It is rotated in synchronization with the clock pulse CP output from the clock pulse oscillator 7o to maintain measurement accuracy.
前記駆動演算装置４０ｔｊ、前出第１図に示した如く、
板幅Ｎの演算に必要な各種定数を設定するための定弊設
定器８２と、皺定数設定幸８２出カの各種定数、及び、
前記部分測長ユニット１６．１８出力の圧延鋼板１２の
側端部位置、及び、前記ロータリエンコーダ３２．３４
出カの部分測長エニン）１６．１８の位置から圧延鋼板
１２の板幅Ｎを算出する板幅演算回路８４と、蚊板幅演
算回路８４の出力に応じて、圧延縦板１２の板幅Ｎをそ
のままデジタル表示する板幅表示器８６と。The drive calculation device 40tj, as shown in FIG. 1 above,
A constant setting device 82 for setting various constants necessary for calculating the plate width N, various constants output from the wrinkle constant setting device 82, and
The side end position of the rolled steel plate 12 output from the partial length measuring unit 16.18 and the rotary encoder 32.34
The width of the rolled vertical plate 12 is calculated according to the output of the plate width calculation circuit 84 that calculates the plate width N of the rolled steel plate 12 from the position of 16.18, and the mosquito plate width calculation circuit 84. A board width display 86 that directly displays N digitally.
前記板幅演算回路８４出力の板幅Ｎ及び前記定数設定器
８２出力の目標板幅Ｎｏとの偏差ΔＮを演算し、必要に
応じて、前記幅制御装置１ｏに幅制御信号を出力する板
幅偏差演算回路８８と、該板幅偏差演算回路８８出力の
板幅偏差ΔＮをデジタル表示する板幅偏差表示器９０と
、前記板幅演算量する板幅変化率演算回路９２と、該板
幅変化率演算回路９２出力の板幅変化率、前記部分測長
ユニット１６．１８出力の測長範囲内の側端部位置。A board width that calculates the deviation ΔN between the board width N output from the board width calculation circuit 84 and the target board width No output from the constant setter 82, and outputs a width control signal to the width control device 1o as necessary. a deviation calculation circuit 88, a board width deviation display 90 that digitally displays the board width deviation ΔN output from the board width deviation calculation circuit 88, a board width change rate calculation circuit 92 that calculates the board width calculation amount, and a board width change rate calculation circuit 92 that displays the board width deviation ΔN output from the board width deviation calculation circuit 88; The plate width change rate output by the rate calculation circuit 92, and the side edge position within the length measurement range output by the partial length measurement unit 16.18.
前記ロータリエンコーダ３２．３４出力の部分測長エニ
ツ）１６．１８の現在位置、及び、センサ３５ａ、ｂ、
ｃ、ｄの出力に応じて、圧延鋼板１２の側端部位置が、
対応する部分測長ユニットの測長範囲外となる恐れがあ
る時は、前記アンプ３６．３８を介して前記測長ｗ＝ニ
ット動装置２０．２２のモータ２４．２６を回動し、圧
延鋼板１２の側端部位置が副長範囲内の所定値、例えば
、平行走査光線ビーム６０の走査幅の中央位置となるよ
う当紋部分副長ユニットを移動限度内で移動すると共に
、必要に応じて、前記幅制御装置ｌＯに幅制御信号を出
力する分配回路９４とから構成されている。Partial length measurement of the rotary encoder 32.34 output) 16.18 current position and sensors 35a, b,
Depending on the outputs of c and d, the side end position of the rolled steel plate 12 is
When there is a possibility that the length will be outside the length measurement range of the corresponding partial length measurement unit, the length measurement w=motor 24.26 of the knit movement device 20.22 is rotated via the amplifier 36.38, and the rolled steel plate is 12 is moved within the movement limit so that the side end position of 12 is a predetermined value within the sub-length range, for example, the center position of the scanning width of the parallel scanning light beam 60, and if necessary, the above-mentioned The distribution circuit 94 outputs a width control signal to the width control device IO.
以下作用を説明する。The action will be explained below.
一般Ｋ、部分測長エニツ）１６．１８の基準位置Ｏｘ、
Ｏｔ間の距離Ｌｏ と、部分測長ユニット１６．１８の
測定値Ａｏ％Ｂｏと、ｐ−タリエンコーダ３２．３４出
力の部分測長ユニット１６．１８の基準位置０１．０茸
からの移動量Ｃ％Ｄと、圧延鋼板１２の板幅Ｎの間には
、第３図から明らかな如く、次式に示すような関係が成
立している。General K, partial length measurement) 16.18 reference position Ox,
The distance Lo between Ot, the measured value Ao%Bo of the partial length measuring unit 16.18, and the amount of movement C of the partial length measuring unit 16.18 from the reference position 01.0 mushroom of the p-tari encoder 32.34 output. As is clear from FIG. 3, a relationship as shown in the following equation is established between %D and the plate width N of the rolled steel plate 12.
Ｌｏ＝Ａｏ＋Ｂｏ＋Ｃ＋Ｄ＋Ｎ ・曲間（１）従って
、圧延銅板１２の板幅Ｎは次式によって算出できる。
゛
Ｎ−Ｌｏ （Ａｏ＋Ｂｏ） （Ｃ＋Ｄ） ””
（２）よって、圧延鋼板１２の板幅が安定しており、圧
延鋼板に蛇行が存在しないか、或い＃：ｔ、各部分測長
ユニット１６．１８の測長範囲Ａ、Ｂを越える恐れのな
い程度の小さな蛇行がある通常の場合には、部分測長ユ
ニット１６．１８を移動することなく（従って、Ｃ，Ｄ
は一定）、前記部分測長ユニット１６．１８の出力Ａｏ
％Ｂｏから、次式を用いて、圧延鋼板１２の板＠Ｎを求
めることができる。Lo=Ao+Bo+C+D+N ・Distance (1) Therefore, the plate width N of the rolled copper plate 12 can be calculated by the following formula.
゛N-Lo (Ao+Bo) (C+D) ””
(2) Therefore, the width of the rolled steel plate 12 is stable and there is no meandering in the rolled steel plate, or #:t, there is a risk of exceeding the length measurement ranges A and B of each partial length measurement unit 16.18. In the normal case where there is a small meander with no
is constant), the output Ao of the partial length measuring unit 16.18
From %Bo, plate @N of the rolled steel plate 12 can be determined using the following formula.
Ｎ＝Ｋｏ＋ −（Ａｏ ＋Ｂｏ ） ・−−−−−−−
−（３）Ｋｏｔ ＝Ｌｏ −（Ｃ＋Ｄ） −（４）一方
、圧延鋼板１２の板幅の設定変更の際、或いは、圧延鋼
板の蛇行が大きな場合のように、圧延鋼板１２の板幅が
部分測長ユニット１６．１８の測長範囲Ａ、Ｂを越えて
大幅に変化する恐れがある場合には、測定値等に応じて
駆動演算装置４０により部分測長ユニット１６．１８を
板幅方向に移動して、圧延鋼板１２０両側端部位置が、
それぞれ部分測長ユニット１６．１８の測長ｉ囲Ａ、Ｈ
の中央位置になるようにして、この状態（Ａｏ、Ｂｏは
一定）で、次式により圧延鋼板１２の板幅Ｎを算出する
。N=Ko+ −(Ao +Bo) ・−−−−−−
-(3) Kot = Lo -(C+D) -(4) On the other hand, when changing the setting of the width of the rolled steel plate 12, or when the rolled steel plate has a large meandering, the width of the rolled steel plate 12 may be partially changed. If there is a risk that the length of the length measuring unit 16.18 will change significantly beyond the measurement ranges A and B, the drive calculation device 40 will move the partial length measuring unit 16.18 in the width direction of the plate depending on the measured value etc. After moving, the positions of both ends of the rolled steel plate 120 are
Length measurement ranges A and H of partial length measurement units 16 and 18, respectively
In this state (Ao and Bo are constant), the plate width N of the rolled steel plate 12 is calculated using the following formula.
Ｎ＝ Ｋｏｔ−（Ｃ＋Ｄ） −（５）Ｋｏ、＝ Ｌｏ
−（Ａｏ＋Ｂｏ） ＝ （６）更に、測長装置の校正を
行なう場合Ｋｔｊ、校正長さＮｏ を有する校正用の板
材を部分測長エニツ）１６．１８の間に配設し、前出（
１）式より対応する測定値を算出し、この値を駆動演算
装置４ｏ内で記憶して＃けばよい。N=Kot-(C+D)-(5)Ko,=Lo
-(Ao+Bo) = (6) Furthermore, when calibrating the length measuring device, a plate material for calibration having Ktj and the calibration length No. is arranged between the partial length measuring units) 16.18, and the above (
1) A corresponding measurement value may be calculated from the formula, and this value may be stored in the drive calculation device 4o.
本実施例におムては、駆動演算装置４ｏ内に板を算出す
るようにしているので、部分測長ユニット１６．１８の
移動の要否の判断が適確になされるだけでなく、幅制御
装置１０に補正指令を出力すること゛も容易である。In this embodiment, since the plate is calculated in the drive calculation device 4o, not only is it possible to accurately determine whether or not to move the partial length measuring unit 16, 18, but also the width It is also easy to output a correction command to the control device 10.
又、本実施例においては、部分測長ユニットとして、高
速度走査型レーザ測長様を用いているので、熱間圧延鋼
板等の高速で移動する高温物体の長さく板幅）を、移動
速度の変動に拘らず高精度で測定できるもめであるが、
部分副長ユニットの構ａ！はこれに限定さ？Ｌない。In addition, in this example, since a high-speed scanning laser length measurement system is used as the partial length measurement unit, the length and width of a high-temperature object that moves at high speed, such as a hot-rolled steel plate, can be measured by the moving speed. Although it is possible to measure with high accuracy regardless of fluctuations in
Structure of the partial vice-chief unit a! Is it limited to this? No L.
尚、前記実施例においそは、部分測長ユニット１６．１
８間の相対移動量を、各部分測長ユニット１６．１８の
位置をそれぞれ検出する、一対のロータリーエンコーダ
３２．３４を用いて構成していたが、部分測長ユニット
間の相対移動量を検出する相対移動量検出手段はこれに
限定されず、例えば、光電式のりニヤスケールを用いた
り、或いは、磁気式のロータリーエンコーダ或いはりニ
ヤエンコーダを用いたり、更には、部分測長ユニット１
６．１８間の相対移動量を直接検出する一台の差動トラ
ンスを用いることも勿論可能である。In the above embodiment, the partial length measuring unit 16.1
A pair of rotary encoders 32 and 34 were used to detect the position of each partial length measuring unit 16 and 18, respectively, to detect the relative movement between the partial length measuring units. The means for detecting the amount of relative movement is not limited to this, for example, a photoelectric linear scale, a magnetic rotary encoder or a linear encoder, or a partial length measuring unit 1 may be used.
Of course, it is also possible to use a single differential transformer that directly detects the amount of relative movement between 6 and 18.
前記実施例は、本発明を、圧延鋼板の板幅の測定に適用
したものであるが、本発明の適用範囲はこれに限定され
ず、棒状材の長さ、或いは、同じく棒状材の直径の測定
にも同様に適用できることは明らかである。In the above embodiment, the present invention is applied to the measurement of the width of a rolled steel plate, but the scope of the present invention is not limited to this, and the present invention is applied to the measurement of the length of a bar-shaped material or the diameter of a bar-shaped material. It is clear that the same applies to measurements as well.
以上説明した通り、本発明によれば、測定対象１“：、
：；
の測定方向端部位置の変動に”応じて部分測長手段が追
従するので、測定対象の長さの大幅な変動に拘らず、測
定対象の長さを正確に求めることができるという優れた
効果を有する。As explained above, according to the present invention, measurement object 1":
:; Since the partial length measuring means follows the variation in the end position in the measurement direction, the length of the object to be measured can be accurately determined regardless of large variations in the length of the object to be measured. It has a great effect.
第１図は、本発明に係る測長装置の実施例である、圧延
鋼板の板幅測定装置の全体構成を示す、一部ブロック線
図を含む斜視図、ｔＪｃＺ図は、前記実施例で用いられ
てい尿部分測長ユニットの構成を示すブロック線図、第
３図は、前記実施例における測定原理を説明するための
要部断面図である。
１２・・・圧延鋼板、１６．１８・・・部分副長ユニッ
ト、１４・・・測定架台、２０．２２・・・測長ユニッ
ト駆動装置、２４．２６・・・モータ、２８．３ｏ・・
・送りねじ、３２．３４・・・ロータリーエンコーダ、
３６．３８・・・アンプ、４０・・・駆動演算装置。
代理人 高 矢 論
（ほか１名）
゛。FIG. 1 is a perspective view including a partial block diagram showing the overall configuration of a width measuring device for rolled steel sheets, which is an embodiment of the length measuring device according to the present invention; FIG. 3 is a block diagram showing the configuration of the urine partial length measuring unit, and is a sectional view of the main part for explaining the measurement principle in the embodiment. 12... Rolled steel plate, 16.18... Partial sub-length unit, 14... Measuring frame, 20.22... Length measuring unit drive device, 24.26... Motor, 28.3o...
・Feed screw, 32.34...rotary encoder,
36.38...Amplifier, 40...Drive calculation device. Agent Takaya Ron (and 1 other person) ゛.
Claims (3)
置され、測定対象の測定方向端部位置をそれぞれ検出す
る、測定方向に相対移動可能な、一対の部分測長手段と
、該部分測長手段の相対移動量を検出する相対移動量検
出手段とを備え、測定対象の測定方向端部位置が、対応
する部分測長手段の測長範囲外となる恐れがないときは
、当該部分測長手段を移動することなく、一方、測定対
象の測定方向端部位置が、対応する部分副長手段の測長
範囲外と々る恐れがあるときは、測定方向端部位置が測
長範囲内の所定値となるよう当該部分測長手段を移動し
て、その時の部分測長手段及び相対移動量検出手段の出
力から、測定対象の長さを求めるようにしたことを特徴
とする測長装置。(1) A pair of partial length measuring means that are disposed near both ends of the measuring object in the measuring direction and that are movable relative to each other in the measuring direction, each detecting the position of the end of the measuring object in the measuring direction, and the partial length measuring means. and a relative movement amount detection means for detecting the relative movement amount of the partial length measurement means. On the other hand, if there is a risk that the end position in the measurement direction of the object to be measured may be outside the length measurement range of the corresponding partial sub-length means, the end position in the measurement direction may be set to a predetermined value within the length measurement range. A length measuring device characterized in that the partial length measuring means is moved so that the length of the object to be measured is determined from the outputs of the partial length measuring means and the relative movement amount detecting means at that time.
光線ビームを発光する平行走査光線ビーム発生源と、測
定対象の端部近傍を通過した前記光線ビームの明暗を検
出する受光器とを備え、該受光器出力に応じて前記光線
ビームの明部又は暗部の請求の範囲第１項に記載の測長
装置。(2) The partial length measuring means includes a parallel scanning light beam generation source that emits a light beam that is scanned in the measurement direction, and a light receiver that detects the brightness of the light beam that has passed near the end of the object to be measured. 2. The length measuring device according to claim 1, further comprising: measuring a bright portion or a dark portion of the light beam depending on the output of the light receiver.
置をそれぞれ検出するための、一対の光電型−測長機か
らなる特許請求の範囲第１項に記載の測長装置。(3) The length measuring device according to claim 1, wherein the relative movement amount detecting means comprises a pair of photoelectric length measuring machines for respectively detecting the position of each partial length measuring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14157481A JPS5842904A (en) | 1981-09-08 | 1981-09-08 | Length measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14157481A JPS5842904A (en) | 1981-09-08 | 1981-09-08 | Length measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5842904A true JPS5842904A (en) | 1983-03-12 |
Family
ID=15295139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14157481A Pending JPS5842904A (en) | 1981-09-08 | 1981-09-08 | Length measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842904A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61155803A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Width measuring instrument |
| JPS6273206U (en) * | 1985-10-29 | 1987-05-11 | ||
| JPS63247252A (en) * | 1987-04-02 | 1988-10-13 | Sanki Kogyo:Kk | Running guide and width increasing device for sheetform product |
| JPH0680306A (en) * | 1992-02-11 | 1994-03-22 | Bst Servo Technik Gmbh | Sensor setting method for web transfer control device |
| JPH06115782A (en) * | 1991-12-30 | 1994-04-26 | Bst Servo Technik Gmbh | Device and method for controlling sensor position in web movement control device |
| KR20010063525A (en) * | 1999-12-22 | 2001-07-09 | 이구택 | Apparatus for detecting the edge of colded roll |
| KR100685052B1 (en) | 2006-04-12 | 2007-02-22 | 주식회사 포스코 | Device for measuring the center position of strip |
| CN107521999A (en) * | 2017-09-22 | 2017-12-29 | 瑞光（上海）电气设备有限公司 | One kind changes a yard detection means |
| WO2022176119A1 (en) * | 2021-02-18 | 2022-08-25 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ 株式会社 | Abnormality determination device, control device, rolling equipment, abnormality determination method, and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107851A (en) * | 1975-03-19 | 1976-09-24 | Ono Sokki Seisakusho Kk | HISETSUSHOKUSHIKI SUNHOKENSHUTSUSOCHI |
-
1981
- 1981-09-08 JP JP14157481A patent/JPS5842904A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107851A (en) * | 1975-03-19 | 1976-09-24 | Ono Sokki Seisakusho Kk | HISETSUSHOKUSHIKI SUNHOKENSHUTSUSOCHI |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61155803A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Width measuring instrument |
| JPS6273206U (en) * | 1985-10-29 | 1987-05-11 | ||
| JPS63247252A (en) * | 1987-04-02 | 1988-10-13 | Sanki Kogyo:Kk | Running guide and width increasing device for sheetform product |
| JPH06115782A (en) * | 1991-12-30 | 1994-04-26 | Bst Servo Technik Gmbh | Device and method for controlling sensor position in web movement control device |
| JPH0680306A (en) * | 1992-02-11 | 1994-03-22 | Bst Servo Technik Gmbh | Sensor setting method for web transfer control device |
| KR20010063525A (en) * | 1999-12-22 | 2001-07-09 | 이구택 | Apparatus for detecting the edge of colded roll |
| KR100685052B1 (en) | 2006-04-12 | 2007-02-22 | 주식회사 포스코 | Device for measuring the center position of strip |
| CN107521999A (en) * | 2017-09-22 | 2017-12-29 | 瑞光（上海）电气设备有限公司 | One kind changes a yard detection means |
| WO2022176119A1 (en) * | 2021-02-18 | 2022-08-25 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ 株式会社 | Abnormality determination device, control device, rolling equipment, abnormality determination method, and control method |
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