JPS5913902A - Detector for position, shape, or sectional area of metallic material - Google Patents
Detector for position, shape, or sectional area of metallic materialInfo
- Publication number
- JPS5913902A JPS5913902A JP12322582A JP12322582A JPS5913902A JP S5913902 A JPS5913902 A JP S5913902A JP 12322582 A JP12322582 A JP 12322582A JP 12322582 A JP12322582 A JP 12322582A JP S5913902 A JPS5913902 A JP S5913902A
- Authority
- JP
- Japan
- Prior art keywords
- metal material
- metallic material
- detector
- sectional area
- shape
- 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
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、静電容量による金属材料の位置、形状断面
積の検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting the position and shape cross-sectional area of a metal material using capacitance.
たとえば、鋼ストリップの処理ラインにおいて、走行中
の鋼ストリップの幅方向変位（蛇行）量を検出してその
トラッキング制御を行なう場合や、鋼管の製造プロセス
において、鋼管の真円度を検出して処理過程にフィード
バックする場合のように、金属材料の位置、形状および
断面積等を非接触で、連続的に測定することは工業上極
めて重要である。For example, in a steel strip processing line, the amount of displacement in the width direction (meandering) of a running steel strip is detected and tracking control is performed, and in a steel pipe manufacturing process, the roundness of the steel pipe is detected and processed. It is extremely important industrially to continuously measure the position, shape, cross-sectional area, etc. of metal materials in a non-contact manner, such as when providing feedback to processes.
従来、たとえば鋼ストリップのトラッキング制御（エツ
ジポジションコントロール）を行なうために、鋼ストリ
ップの縁辺部の幅方向変位量を検出する手段として、空
気流の如き流体束を使用し、鋼ストリップの縁辺によっ
て遮蔽される割合によって受流孔において圧力変化する
ものを利用するものや、流体束の代りに光束を利用する
ものがある。Conventionally, for example, in order to perform tracking control (edge position control) of a steel strip, a fluid flux such as an air flow is used as a means for detecting the amount of widthwise displacement of the edge of the steel strip, and a fluid flux that is shielded by the edge of the steel strip is used. There are those that use pressure that changes in the receiving hole depending on the rate of fluid flow, and those that use light flux instead of fluid flux.
しかしながら、従来のこれらセンサは、たとえば空気流
の如き流束体を利用するセンサにおいては（１）測定範
囲が狭くせいぜい±６ｗ程度である、（２）厚さ寸法の
大きな金属材料には適用できない、（６）流体束を利用
するからたとえば鋼ストリップを測定対象とする場合、
ストリップのばたつきがあると乱流を生じ誤差が大きく
なる。However, these conventional sensors, for example sensors that use flux bodies such as airflow, (1) have a narrow measurement range of about ±6w at most, and (2) cannot be applied to metal materials with large thickness dimensions. , (6) Since fluid flux is used, for example, when measuring a steel strip,
If the strip flaps, it will cause turbulence and increase errors.
また、光束を利用する如き光学式センサにあっては（１
）価格が高い、（２）高温材料の測定ができない、（３
）メンテナンスが難しい、といった欠点を有する。In addition, in optical sensors that utilize luminous flux (1
) High price, (2) Cannot measure high temperature materials, (3
) has the disadvantage of being difficult to maintain.
この発明は、これら従来技術における欠点を解消した、
金属材料の位置、形状および断面積等測定手段を得るこ
とを目的としてなされた。This invention eliminates these drawbacks in the prior art,
The aim was to obtain a means for measuring the position, shape, cross-sectional area, etc. of metal materials.
この発明は、金属材料の変位、形状域は断面積を、電場
における金属材料の占める寸法と静電容量の関係を利用
して検出するものである。第１図に示す如く金属材料１
２０を挾んで、間隔をおいて相対向する如く電極１０１
，１０２を設けるとともに、該電極の一方に交流電流を
供給する交流発振器１１０を設けさらに他方の電極から
出力される、電極板間で電極に平行な方向において前記
金属材料１２０が占める寸法の大きさに対応する電流を
増幅する増幅器１１１とからなる金属材料の位置、形状
検出装置については先に提案した（ 願昭
号）。本発明は、これに更に改良を加え発展させたも
のである。以下に詳細に説明する。This invention detects the displacement of a metal material, the shape area, and the cross-sectional area by using the relationship between the size occupied by the metal material in an electric field and the capacitance. Metal material 1 as shown in FIG.
The electrodes 101 are sandwiched between the electrodes 101 and are opposed to each other at intervals.
, 102, and an AC oscillator 110 that supplies alternating current to one of the electrodes, and the size of the dimension occupied by the metal material 120 in the direction parallel to the electrodes between the electrode plates, which is output from the other electrode. We have previously proposed a device for detecting the position and shape of a metal material, which consists of an amplifier 111 that amplifies the current corresponding to the current.
issue). The present invention further improves and develops this. This will be explained in detail below.
本発明の１例を第２図に示す。図に示す如く本発明は、
静電容量を検出する検出器５、検出器５内の片方の電極
板１に交流電圧を供給する交流発振器１０、もう一方の
電極板２には変位電流を検出し増幅する増幅器１１、増
幅器１１の交流出力信号を直流信号に変換するＡＣ／Ｉ
）Ｃ変換器１２から構成されている。An example of the present invention is shown in FIG. As shown in the figure, the present invention
A detector 5 that detects capacitance, an AC oscillator 10 that supplies an AC voltage to one electrode plate 1 in the detector 5, and an amplifier 11 that detects and amplifies a displacement current on the other electrode plate 2. AC/I converts AC output signal into DC signal
) C converter 12.
第２図（ａ）に示すように検出器５は金属材料２゜に対
向して配置されている。検出器５は第２図（ａ）。As shown in FIG. 2(a), the detector 5 is placed facing the metal material 2°. The detector 5 is shown in FIG. 2(a).
（ｂ）に示すように電極板１，２、シールドケース３、
絶縁保持具４から構成されている。電極板１，２は絶縁
保持具４でシールドケース３に固定されている。電極板
１，２は電気的にシールドケース３と絶縁されている。As shown in (b), electrode plates 1 and 2, shield case 3,
It is composed of an insulating holder 4. The electrode plates 1 and 2 are fixed to a shield case 3 with an insulating holder 4. Electrode plates 1 and 2 are electrically insulated from shield case 3.
シールドケース３は、電極板１．２の対向面以外の浮遊
容量の影響を防止するために設けた。電極板１には交流
発振器１ｏが接続されている、電極板１から電流が変位
電流として電極板２に流出する。この変位電流の大きさ
は電極板１，２と金属材料２０との空間の大きさによっ
て決まる静電容量Ｃｘの大きさに比例する。即ち第２図
（、）に示す如く検出器５と金属材料２ｏとの間隔ｄと
同図（ｂ）に示すように検出器５の大きさと金属材料２
０の大きさの関係によってきまる。The shield case 3 is provided to prevent the influence of stray capacitance on surfaces other than those facing the electrode plate 1.2. An AC oscillator 1o is connected to the electrode plate 1, and current flows from the electrode plate 1 to the electrode plate 2 as a displacement current. The magnitude of this displacement current is proportional to the magnitude of the electrostatic capacitance Cx, which is determined by the size of the space between the electrode plates 1 and 2 and the metal material 20. That is, the distance d between the detector 5 and the metal material 2o as shown in FIG. 2(,) and the size of the detector 5 and the metal material 2 as shown in FIG.
It depends on the relationship of the magnitude of 0.
電極板２で検出された変位電流は増幅器１１で増幅され
る。増幅器１１の交流出力信号はＡＣ／ＤＣ変換器１２
で直流信号に変換され、間隔ｄに比例した信号を出力す
る。The displacement current detected by the electrode plate 2 is amplified by an amplifier 11. The AC output signal of the amplifier 11 is sent to the AC/DC converter 12.
It is converted into a DC signal at , and outputs a signal proportional to the interval d.
第２図に示す装置（ＡＣ／ＤＣ変換器１２）の出力特性
を第３図に示す。検出器５と金属材料２０と゛の間隔ｄ
を一定に保ち、金属材料２０の幅ｔを変えた場合の出力
特性を第３図（ａ）に示す。第３図（ｂ）は金属材料２
０の幅を一定とし、間隔ｄを変化した場合の出力特性を
示す。従って本装謹により、金属材料２０の幅や厚み変
動を測定することができる。即ち、幅と厚みから面積を
求めていることになる。The output characteristics of the device (AC/DC converter 12) shown in FIG. 2 are shown in FIG. 3. Distance d between the detector 5 and the metal material 20
FIG. 3(a) shows the output characteristics when the width t of the metal material 20 is varied while keeping the width t constant. Fig. 3(b) shows the metal material 2.
The output characteristics are shown when the width of 0 is constant and the interval d is changed. Therefore, with this arrangement, variations in the width and thickness of the metal material 20 can be measured. In other words, the area is calculated from the width and thickness.
第２図に示す本発明の特徴は次の通シである。The features of the present invention shown in FIG. 2 are as follows.
（１）金属材料の幅測定ができる。(1) The width of metal materials can be measured.
（２）金属材料の厚み測定ができる。(2) The thickness of metal materials can be measured.
（３）金属材料の左右の振動の影響を受けない。(3) Not affected by horizontal vibration of metal materials.
（４）金属材料に対して検出器を回転することによシ金
属材料の形状を測定することができる。(4) The shape of the metal material can be measured by rotating the detector relative to the metal material.
本発明を更に発展させた装置を第４図に示す。An apparatus in which the invention is further developed is shown in FIG.
製造工程に於いて、金属材料２０は一般にローラーテー
ブル上を移動している。移動中に金属材料２０は左右、
上下方向に振動をともなっている。During the manufacturing process, the metal material 20 is typically moved on a roller table. While moving, the metal material 20 moves left and right,
It is accompanied by vibrations in the vertical direction.
第４図に示す装置は第２図に示した装置を応用したもの
である。第４図に示すように、金属材料２０に対して上
下に検出器５を配置する。上下の電極板１−１．１−２
および２−１．２−２は電線で接続されている。従って
検出器５は電極板の対向面積（空間）の静電容量Ｃｘを
検出する。第４図に示す如く、金属材料２０が検出器５
内を挿入又は通過しているとすれば、金属材料２０の断
面積だけ空間が小さくなる。即ち電極板１−１．１−２
に交流発振器１０が接続されている。電極板１−ｉ 、
１−２からの変位電流は電極板２−１．２−２によっ
て検出され増幅器１１で増幅される。増幅された交流信
号はＡＣ／ＤＣ変換器１２で直流に変化され、断面積に
比例した信号を出力することになる。The apparatus shown in FIG. 4 is an application of the apparatus shown in FIG. As shown in FIG. 4, detectors 5 are placed above and below the metal material 20. Upper and lower electrode plates 1-1.1-2
and 2-1.2-2 are connected by electric wires. Therefore, the detector 5 detects the capacitance Cx of the area (space) where the electrode plates face each other. As shown in FIG. 4, the metal material 20
If the metal material 20 is inserted or passed through, the space becomes smaller by the cross-sectional area of the metal material 20. That is, electrode plate 1-1.1-2
An AC oscillator 10 is connected to the AC oscillator 10 . Electrode plate 1-i,
The displacement current from 1-2 is detected by electrode plate 2-1, 2-2 and amplified by amplifier 11. The amplified alternating current signal is converted to direct current by the AC/DC converter 12, and a signal proportional to the cross-sectional area is output.
第４図に示す本発明の装置は検出器５の対向する電極間
の空間の静電容量を測定するものであるから次の特徴が
ある。The device of the present invention shown in FIG. 4 measures the capacitance of the space between opposing electrodes of the detector 5, and therefore has the following features.
（１）金属材料の上下、左右振動の影響を全く受けない
。(1) It is completely unaffected by vertical and horizontal vibrations of metal materials.
（２）金属材料の断面積を測定することができる。(2) The cross-sectional area of metal materials can be measured.
（６）金属材料の厚み変動がなければ幅測定もできる。(6) Width measurement is also possible if there is no variation in the thickness of the metal material.
（４）、、金属材料の形状の影響を受けない。(4), It is not affected by the shape of the metal material.
（５）金属材料が検出器よりも大きければ金属材料の厚
み測定が出来る。(5) If the metal material is larger than the detector, the thickness of the metal material can be measured.
第１図は先に提案した寸法、形状測定用の装置構成を示
す断面図であり、第２図は本発明の１つである寸法、形
状、位置、断面積測定の装置構成を示す断面図および平
面図であ）、第３図は第２図に示す装置の出力特性を示
すグラフであり、第４図は本発明の１つである寸法、形
状、断面積、位置測定用の装置構成を示す断面図および
平面図である。
１．２ 、１−１ 、１−２ 、２−１．２−２ ：電
極板、６：シールドケース、４：絶縁保持具、５：検出
器、１０：交流発振器、１１：増幅器、 １２：ＡＣ／
ＤＣ変換器、２０：金属材料。
出願人 新日本製鐵株式会社
代理人弁理士 背 柳 稔□晃
３図 （ｂ）
□ｄ
手続補正書（自発）
昭和５７年特許願第’１２３２２５号
２発明の名称
金属材料の位置、形状、断面積検出装置６、補正をする
者
事件との関係 特許出願人
住 所 東京都千代田区大手町二丁目６番６号名称
（６６５）新日本製錬株式会社
代表者 武 １） 豊
４、代 理 人 〒１０１
住 所 束尿都千代田区岩本町３丁目４番５号第−東
ビル６、補正釦より増加する発明の数 な しＺ補正
の対象 明細書の発明の詳細な説明の欄ａ補正の内容
（１）明細書第３頁１７行の「（願昭 号）」を「
（特願昭５７−３Ｓ２５７号）」に補正する。
１５−FIG. 1 is a cross-sectional view showing the configuration of the device for measuring dimensions and shape proposed earlier, and FIG. 2 is a cross-sectional view showing the configuration of the device for measuring size, shape, position, and cross-sectional area, which is one of the aspects of the present invention. FIG. 3 is a graph showing the output characteristics of the device shown in FIG. FIG. 1.2, 1-1, 1-2, 2-1.2-2: Electrode plate, 6: Shield case, 4: Insulating holder, 5: Detector, 10: AC oscillator, 11: Amplifier, 12: AC/
DC converter, 20: Metal material. Applicant Nippon Steel Corporation Representative Patent Attorney Minoru Seyanagi 3 Figure (b) □d Procedural amendment (spontaneous) 1982 Patent Application No. '123225 2 Name of the invention Position, shape of metal material, Relationship between cross-sectional area detection device 6 and the amended person case Patent applicant address 2-6-6 Otemachi, Chiyoda-ku, Tokyo Name
(665) Shin Nippon Seiren Co., Ltd. Representative Takeshi 1) Yutaka 4, Agent 101 Address 6-Higashi Building, 3-4-5 Iwamoto-cho, Chiyoda-ku, Chiyoda-ku, Inventions that increase from the correction button Number None Z Subject of amendment Detailed description of the invention in the specification column a Contents of the amendment (1) Change “(Gansho No.)” on page 3, line 17 of the specification to “
(Patent Application No. 57-3S257)”. 15-
Claims (1)
前記金属材料に離隔して少なくともその一方側に一対配
設し、該一対の電極の一方に交流電流を供給する交流発
振器を設け、さらに他方の電極から出力される、電極間
で電極に平行な方向において金属材料が占める寸法およ
び電極と金属°材料間の距離の何れか一方または双方に
対応する電流を増幅する増幅器とからなる金属材料の位
置、形状、断面積検出装置。An electrode with a side dimension larger than the width of the metal material,
A pair of alternating current oscillators are disposed on at least one side of the metal material and are spaced apart from each other, and supply an alternating current to one of the pair of electrodes, and an alternating current oscillator is provided between the electrodes parallel to the electrodes and output from the other electrode. A device for detecting the position, shape, and cross-sectional area of a metal material, comprising an amplifier that amplifies a current corresponding to one or both of the dimensions occupied by the metal material in the direction and the distance between the electrode and the metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12322582A JPS5913902A (en) | 1982-07-15 | 1982-07-15 | Detector for position, shape, or sectional area of metallic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12322582A JPS5913902A (en) | 1982-07-15 | 1982-07-15 | Detector for position, shape, or sectional area of metallic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5913902A true JPS5913902A (en) | 1984-01-24 |
Family
ID=14855295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12322582A Pending JPS5913902A (en) | 1982-07-15 | 1982-07-15 | Detector for position, shape, or sectional area of metallic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04305280A (en) * | 1991-03-30 | 1992-10-28 | Japan Small Corp | Device for measuring size of solid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826169A (en) * | 1971-08-09 | 1973-04-05 |
-
1982
- 1982-07-15 JP JP12322582A patent/JPS5913902A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826169A (en) * | 1971-08-09 | 1973-04-05 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04305280A (en) * | 1991-03-30 | 1992-10-28 | Japan Small Corp | Device for measuring size of solid |
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