JPS5943477A - Reading method of tracking of pipe or bar material - Google Patents
Reading method of tracking of pipe or bar materialInfo
- Publication number
- JPS5943477A JPS5943477A JP15436782A JP15436782A JPS5943477A JP S5943477 A JPS5943477 A JP S5943477A JP 15436782 A JP15436782 A JP 15436782A JP 15436782 A JP15436782 A JP 15436782A JP S5943477 A JPS5943477 A JP S5943477A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- mark
- code
- dimensional sensor
- picture
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Discharge Of Articles From Conveyors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は管材又は棒材の円周に複数のリング状マークを
伺けてコード化し、骸コードを２次元センサーを用いて
２次元的に判別し、読取りエラーの防止を図ると共に管
材又ｌｉ棒材の径変化に対して何ら対処することなくコ
ードを確実に判別できる管・棒拐のトラッキング読取り
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention codes a plurality of ring-shaped marks on the circumference of a pipe or bar, and identifies the skeleton code two-dimensionally using a two-dimensional sensor to prevent reading errors. The present invention relates to a method for tracking and reading pipes and rods, in which the code can be reliably determined without having to take any measures against changes in the diameter of the pipe or Li rod.
一般に鋼管・棒体１等の製造ラインにおけるリング状バ
ーコードの読取装置イ１には、レーザースギャン方式や
ビームスイッチを用いた装置、或いは一次元ＣＯＤ （
ラインセンサー）を用いた装置１ｔなどがあるが、いず
れにしてもリング状バーコ〜ドを直線的に読取るもので
あった。このため、バーコードにローラ軸受関係潤滑油
や防錆油、スケール等の汚れが剛着していたり或いはギ
ツカー、搬送用■ローラ、転送用スキッドレール宿との
接触・摩擦によりバーコード自体が部分的にｆｌ Ｅｉ
ｆ、 Ｌ／ 、、 Ｗｆｒ取エシエラ−じる欠点があっ
た。Generally, the ring-shaped barcode reading device 1 on the production line for steel pipes, rods 1, etc. is a device using a laser beam switch or a one-dimensional COD (
There is a device 1t using a line sensor), but in any case, the ring-shaped barcode is read linearly. For this reason, the barcode may be contaminated with roller bearing-related lubricating oil, anti-rust oil, scale, etc., or the barcode itself may become partially damaged due to contact or friction with the roller bearing, conveyance roller, or transfer skid rail housing. fl Ei
f, L/,, Wfr had some drawbacks.
従来では、このＭｃ取エラーを無くすため、読取センサ
ーを円周方向に核数個設けて、確実なるｉ）’ＣＣクシ
行なうようにしているが、それでも前記バーコードの汚
れがひどい場合等にはエラーが発生することがあり、ま
たコストアップの原因になる欠点があった。Conventionally, in order to eliminate this Mc reading error, several reading sensors are provided in the circumferential direction to ensure reliable i)' CC combing, but if the bar code is still heavily soiled, etc. Errors may occur, and there are drawbacks that increase costs.
寸だ従来にあっては、鋼管・棒餉等の径変化に対（〜Ｃ
ば、対物距離を一定にするためにセンザー位置をプリセ
ットし７たり、対物距離−の変化による視野変動を油止
する必要があり、径情報は読取Ｍｆ」にこれを知らなけ
ればならなかった。In the past, it was difficult to deal with changes in the diameter of steel pipes, rods, etc.
For example, it is necessary to preset the sensor position to keep the object distance constant, or to prevent fluctuations in the field of view due to changes in the object distance, and the diameter information must be known to the reader Mf.
本発明は従来の上記欠点に鑑みてこれを改良除去したも
のであって、管材又は捧Ｉの円周に複数のリング状マー
クを付けてコード化し、該コードを２次元センサーを用
いて２次元的に判別し、読Ｊｌ■ニジ−の防止を図ると
共に管材又は棒材の径変化に対して何ら対処することな
くコードを確実に判別できる管・棒材のトラッキング読
取シ方法に閂するものである。In view of the above-mentioned drawbacks of the conventional art, the present invention improves and eliminates them.The present invention involves attaching a plurality of ring-shaped marks to the circumference of a pipe or a support I, and coding the code in a two-dimensional manner using a two-dimensional sensor. This is a method for tracking and reading pipes and bars that can accurately distinguish codes, prevent reading errors, and reliably identify codes without having to take any measures against changes in the diameter of pipes or bars. be.
以下に本発明の方法を管わをトラッキングする場合に基
づいて説明すると次の辿シである。The method of the present invention will be explained below based on the case of tracking a pipe.
第１図は本発明の具体的な実ｈ１！４例を示すものであ
る。同図において、１は鋼管、２は投・受光器３．４よ
りなる鋼管］−の管端１ａを検出するための検出器、５
は＠７管１の管端１ａから所定距期（はなれた位置にお
いて、円周に設けられた複数個のリング状バーコードで
ある。該バーコード５は、第２図に示すように読取開始
位置マーク５ａと、内容を表すコード５ｂ乃至５ ｍと
、読取終了位僅マーク５ｎを有する。６ｔ」、背端検出
器２のイ、：丁−妙により一定時間間隔で発光するスト
ロボ、７け撮像装置としての２次元センサー、８は該セ
ンサー７からの信号を表示するモニターテレビで、また
９Ｑよ２次元センサー７の低温を両像処理する装置であ
る。FIG. 1 shows a concrete example of h1!4 of the present invention. In the same figure, 1 is a steel pipe, 2 is a steel pipe consisting of a projector/receiver 3.4] - a detector for detecting the pipe end 1a, 5
@7 is a plurality of ring-shaped barcodes provided around the circumference at a predetermined distance from the tube end 1a of the tube 1.The barcode 5 starts reading as shown in FIG. It has a position mark 5a, codes 5b to 5m representing the contents, and a reading end mark 5n. A two-dimensional sensor as an imaging device, 8 is a monitor television that displays the signal from the sensor 7, and 9Q is a device that processes the low temperature of the two-dimensional sensor 7 in both images.
この装置ｉ？ ９はストロボ６と２次元センーν”−７
で捉えた静止画像を記憶１７て、所定のスライスレベル
で２値化し、２値化画像上での読取開始位ｈ″′１：マ
〜りと終了体部マークから視野を求め、これに応じて内
容を示すコード部の各構成ビットに対応する部分に所定
ｒｉｊのウィンド一部１１を設定して、この中の画７Ｉ
ＩＪｉ−にのマークを検出している画素数を計数する。This device i? 9 is a strobe 6 and a two-dimensional sensor ν"-7
The still image captured in 17 is stored, binarized at a predetermined slice level, the field of view is determined from the reading start position h'''1: mark and the end body mark on the binarized image, and the field of view is determined according to this. A window part 11 of a predetermined rij is set in the part corresponding to each constituent bit of the code part indicating the content, and the window 7I in this is set.
The number of pixels detecting the mark on IJi- is counted.
この画素数がある一定以上であえＬげ「マーク有り」と
４４Ｊ定１−１一定の数取下であれば「マーク無し」と
判定する。そして「マーク有り」に１“を与え、「マー
ク無し」に”０“を与え、読取開始位置マーク側を最上
位ビット、終了位置マ面して、画像処理装置９のウィン
ド一部１１０幅及び間隔と、バーコード５０幅及び間隔
並びに基準となる画素数の設定は、２次元センサー７と
紹管１の距離及び２次元センサー７の視野等を考ム１３
、して決定される。If the number of pixels exceeds a certain level and a certain number of pixels are removed, it is determined that there is no mark. Then, 1" is given to "marked", "0" is given to "no mark", and the reading start position mark side is the most significant bit, the end position is set to the uppermost bit, and the width of the window part 110 of the image processing device The spacing, the barcode 50 width and spacing, and the reference number of pixels are set by considering the distance between the two-dimensional sensor 7 and the introduction tube 1, the field of view of the two-dimensional sensor 7, etc.13
, is determined.
このような構成のシステムにおいて、先づ伸１４管ｌが
第１図の矢符の如く搬送され、その管端１ａが管端検出
器２の投・受光器３，４を押ぎると、ストロボライト６
が一定時間のあいだ、一定の間１（Ｍで発光を開始する
。すると、これに同１１］シて２次元センサ・−７及び
モニターテレビ８、画像処理装置ｉ５ｉ ９に静止画像
が写し出される。画像処理装↑秤゛イ。In a system with such a configuration, first the 14-tube l is conveyed as shown by the arrow in FIG. 6
starts emitting light at 1 (M) for a certain period of time, then a still image is projected on the two-dimensional sensor -7, the monitor television 8, and the image processing device i5i 9. Image processing device↑Weighing.
９ ｉｆ；ｊ２、上記静止画像を記憶し、読取開始位置
マーク５ａと読取終了位置マーク５ｎが画像処理装置９
の画面１０全体にキャッチされるまで続行する。9 if; j2, the above still image is stored, and the reading start position mark 5a and the reading end position mark 5n are stored in the image processing device 9.
Continue until the entire screen 10 is captured.
すなわち、コードマーク５全体が２次元センサー７の画
面１０内にキャッチされるまで続行する。That is, the process continues until the entire code mark 5 is captured within the screen 10 of the two-dimensional sensor 7.
尚、２次元センサー７の視野の大きさは設定が任意であ
り、これを犬きく取ることによシ、コードマーク５全体
をキャッチすることが容易であるばかシでなく、鋼管１
の外径変化に対しても、伺ら対応することなく判定が可
能である。その半面画面上のマーク巾に対応する画素数
が減少し、分角ｔ゛能が落ちるため、これらのかね合い
によシ祝野を決定する。The size of the field of view of the two-dimensional sensor 7 can be set arbitrarily, and by carefully picking up the field of view, it is possible to easily catch the entire code mark 5.
It is also possible to judge changes in the outer diameter of the tube without having to deal with them. The number of pixels corresponding to the width of the mark on the half-screen decreases, and the minute angle capability decreases, so the field is determined based on these considerations.
画像処Ｐ１１装置９では、第２図に示すように、読取開
始位置マーク５ａのエツジ検出け、２値化画像１０の濱
〔１取開始位置マーク側の端より縦１列４ｉｒに各画素
数をチェックし、マークを検出している画素数がその列
の画素数に対して所定の割合以上となる最初の列とする
。同様に他の一方の端よりチェックし、読取終了位置マ
ークのエツジ部を」Ｊ、つける。このようにして、読取
開始位置マーク５ａと最終位置マーク５ｎがわかれば、
コード５の各′４黄成ビットと対応して設けられたウィ
ンド一部１１内のマークを検出している仙１素数を割数
゛する。そして、これが刑定数以上であれは、夫々のウ
ィンドー１ｉｌｉｌｌのエリアは「マークイ］シ」とし
て１１１全力え、滴定数以下であれば「マーク無し」と
して１０１を力える。この操作を５ｂ〜５＋ｎｔでの全
ビットに対して行い、得られたｓｌｍ、＊□ｉの列の５
ｂをｔ１◇上位ピント、５ｍを最下位ビットとするパイ
ナリーコー ドとしてＲノ〔、取る。In the image processing P11 device 9, as shown in FIG. is checked, and the first column in which the number of pixels in which marks are detected is equal to or greater than a predetermined ratio to the number of pixels in that column is selected. Check from the other end in the same way, and add "J" to the edge of the reading end position mark. Once the reading start position mark 5a and final position mark 5n are known in this way,
The 1 prime number detecting the mark in the window part 11 provided corresponding to each '4 yellow bit of the code 5 is divided by a divisor. If this is above the titration constant, the area of each window 1ilill is set to 111 as a "mark", and if it is below the titration, 101 is set as "no mark". This operation is performed for all bits from 5b to 5+nt, and the obtained slm, 5 of the column of *□i
Take R as a pinary code with b as t1◇upper focus and 5m as the least significant bit.
以上盾、明１７たように本発明ｔ」１、青オ」又はイ４
・旧の円周に核ＩＱＩのリング状マークを付けてコード
化し、該コードを２次元センサーを用いて２次元的に判
別するようにしたから、マークに汚れ箔・があっても読
取エラーがない。甘た読取操作の都吸視ＩＱ：を１棒１
ｉ、ＩＩ検出する方式であるためその視野の設定が任し
くτであり、これを予め犬きく取っておけば管胴やイト
相の径）〕化に対しても何ら対応することなく、コード
の牛１」男ｌｉ ′／）′−司可能ある。The above shield, Ming 17, the present invention T"1, Blue O" or A4
・A nuclear IQI ring-shaped mark is attached to the old circumference and coded, and the code is determined two-dimensionally using a two-dimensional sensor, so even if there is dirt or foil on the mark, there will be no reading errors. do not have. Miyako's IQ for naive reading operations: 1 bar 1
Since it is a method that detects i and The cow 1'man li'/)'- is possible.
第］ １＋ｘｌは本発明の一実、！／ｌｔｉ例をボす全
体システム図、第２図Ｃ」、ｌ？ｉＪ実施１．＋すにお
ける画保処理装置白の画面々鋼管のコードの関係を示す
図面である。
１・・・鋼管 ５・・・コード ５ａ乃至５ ｎ 用マ
ーク７・・・２次元センサー
特許出願人 住友金属工業株式会社
代理人弁、Ｙ＃（士内［（１敏が] 1+xl is a fruit of the present invention! Overall system diagram showing /lti example, Figure 2C'', l? iJ implementation 1. FIG. 1...Steel pipe 5...Code 5a to 5n Mark 7...Two-dimensional sensor patent applicant Sumitomo Metal Industries Co., Ltd. attorney, Y# (Shinai [(1 Satoshi)
Claims (1)
ード化し、２次元センサーを管・枠側に近接して配設置
７て、前記コードが２次元センサーの識別エリア内にあ
るかどうかを、２次元センサーの画面上に捉えられた所
定範囲のマークをイ突出している画素数を割数すること
によシ！ＦＪＪ別し、前記コードの全数が２ ｒＫ元セ
ンヤーの識別エリア内に入った時点の前記各コード化さ
れ／こマークに対応する部分の画面上のマークを検出し
ている画素数をそれぞれ１数してコード化されたマーク
の有無を判定しコードの内容を判１ｔＪｒするようにし
たことを特徴とする％・棒材のトラッキング読取り方法
。l A plurality of ring-shaped marks are attached to the circumference of the pipe/bar to code it, a two-dimensional sensor is placed close to the pipe/frame side7, and it is checked whether the code is within the identification area of the two-dimensional sensor. This can be determined by dividing the number of pixels that stand out from the mark in a predetermined range captured on the screen of the two-dimensional sensor. By FJJ, the total number of the above codes is 2. The number of pixels detecting the mark on the screen corresponding to each coded mark at the time of entering the identification area of the rK original sensor is 1 each. A method for tracking and reading % bars, characterized in that the presence or absence of a coded mark is determined, and the content of the code is determined by the size of 1tJr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15436782A JPS5943477A (en) | 1982-09-03 | 1982-09-03 | Reading method of tracking of pipe or bar material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15436782A JPS5943477A (en) | 1982-09-03 | 1982-09-03 | Reading method of tracking of pipe or bar material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5943477A true JPS5943477A (en) | 1984-03-10 |
| JPS642996B2 JPS642996B2 (en) | 1989-01-19 |
Family
ID=15582605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15436782A Granted JPS5943477A (en) | 1982-09-03 | 1982-09-03 | Reading method of tracking of pipe or bar material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460509A2 (en) * | 1990-06-02 | 1991-12-11 | Prestek Limited | Binary bar code reader |
| JP2011525424A (en) * | 2008-06-26 | 2011-09-22 | ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Individual tracking method for hollow metal bodies |
-
1982
- 1982-09-03 JP JP15436782A patent/JPS5943477A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460509A2 (en) * | 1990-06-02 | 1991-12-11 | Prestek Limited | Binary bar code reader |
| JP2011525424A (en) * | 2008-06-26 | 2011-09-22 | ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Individual tracking method for hollow metal bodies |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS642996B2 (en) | 1989-01-19 |
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