JPS6425748U - - Google Patents
Info
- Publication number
- JPS6425748U JPS6425748U JP12077587U JP12077587U JPS6425748U JP S6425748 U JPS6425748 U JP S6425748U JP 12077587 U JP12077587 U JP 12077587U JP 12077587 U JP12077587 U JP 12077587U JP S6425748 U JPS6425748 U JP S6425748U
- Authority
- JP
- Japan
- Prior art keywords
- light
- steel plate
- steel sheet
- sheet surface
- effective bits
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
第１図ａ，ｂは本考案による溶接部検出装置の
一実施例を示す構成図、第２図は同実施例におけ
る信号処理装置の一例を示すブロツク図、第３図
ａ，ｂおよび第４図ａ，ｂは同実施例における作
用を説明するための図、第５図ａ，ｂ乃至第７図
ａ，ｂは本考案による溶接部検出装置の他の実施
例をそれぞれ示す構成図である。
１……ブライドルロール、２……鋼板、３１，
３２……第１、第２の投光装置、４１，４２……
第１、第２の受光装置、５１，５２……第１、第
２の信号処理装置、５１ａ，５２ａ……第１、第
２の増幅器、５１ｂ，５２ｂ……第１、第２の２
値化回路、５１ｃ，５２ｃ……第１、第２の計数
器、５１ｄ，５２ｄ……第１、第２の比較器、６
……論理和演算回路、７……タンデムステアリン
グロール、８……架台、９……ＣＡＬブライドル
ロール。
1A and 1B are block diagrams showing an embodiment of a welding part detection device according to the present invention, FIG. 2 is a block diagram showing an example of a signal processing device in the same embodiment, and FIGS. Figures a and b are diagrams for explaining the operation of the same embodiment, and Figures 5a and b to 7a and b are configuration diagrams showing other embodiments of the welding part detection device according to the present invention, respectively. . 1... Bridle roll, 2... Steel plate, 31,
32...first and second light projecting devices, 41, 42...
First and second light receiving devices, 51, 52...first and second signal processing devices, 51a, 52a...first and second amplifiers, 51b, 52b...first and second 2
Value conversion circuit, 51c, 52c...first, second counter, 51d, 52d...first, second comparator, 6
...OR circuit, 7...Tandem steering roll, 8...Mountain frame, 9...CAL bridle roll.
Claims (1)
板の溶接部を検出する装置において、前記鋼板の
進行方向から鋼板表面に光を投射する投光装置と
、光軸が前記投光装置の光軸と鋼板表面で一致し
ないように投光装置に対応して配設され、鋼板表
面で反射された反射光を受光して鋼板表面の板幅
方向の光度分布を検出するイメージセンサを備え
た受光装置と、この受光装置からの検出信号を予
め設定された２値化レベルにて２値化し、かつそ
の有効ビツトを計数して得られる有効ビツト数Ｎ
と予め設定された最小有効ビツト数Ｎ′との大小
関係を比較し、その結果Ｎ＞Ｎ′であることを判
定したことにより溶接部検出信号を出力する信号
処理装置とを備えて成ることを特徴とする溶接部
検出装置。 (2) 投光装置および受光装置を複数組設置し、
各々の組の装置による溶接部検出信号の論理和を
出力する論理和演算手段を備えるようにした実用
新案登録請求の範囲第(1)項記載の溶接部検出装
置。[Claims for Utility Model Registration] (1) A device for detecting a welded part of a steel plate in a continuous line such as a tandem line, which includes a light projecting device that projects light onto the surface of the steel plate from the traveling direction of the steel plate, and an optical axis that is An image of a lighting device installed so that the optical axis of the lighting device does not coincide with the steel sheet surface, and detecting the luminous intensity distribution in the sheet width direction on the steel sheet surface by receiving the reflected light from the steel sheet surface. A light receiving device equipped with a sensor, and the number N of effective bits obtained by binarizing the detection signal from this light receiving device at a preset binarization level and counting the effective bits.
and a signal processing device that compares the magnitude relationship between the number of bits and a preset minimum number of effective bits N', and outputs a weld detection signal when it is determined that N>N'. Characteristic welding part detection device. (2) Install multiple sets of light emitters and light receivers,
The welding part detection device according to claim 1, which is a utility model, and includes a logical sum operation means for outputting a logical sum of the welded part detection signals from each set of devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077587U JPS6425748U (en) | 1987-08-06 | 1987-08-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077587U JPS6425748U (en) | 1987-08-06 | 1987-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425748U true JPS6425748U (en) | 1989-02-13 |
Family
ID=31367186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12077587U Pending JPS6425748U (en) | 1987-08-06 | 1987-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425748U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381511B2 (en) | 2003-06-02 | 2008-06-03 | Ricoh Company, Ltd. | Photoreceptor, image forming method and image forming apparatus using the photoreceptor, process cartridge using the photoreceptor and coating liquid for the photoreceptor |
| JP2008183589A (en) * | 2007-01-30 | 2008-08-14 | Nippon Steel Engineering Co Ltd | Method of detecting joined place |
| JP2010008297A (en) * | 2008-06-30 | 2010-01-14 | Jfe Steel Corp | Detection method of position of welding hole |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892938A (en) * | 1981-11-30 | 1983-06-02 | Matsushita Electric Ind Co Ltd | Flaw measuring device |
| JPS5944604A (en) * | 1982-09-08 | 1984-03-13 | Nippon Kokan Kk <Nkk> | Detection of seam position of pickled coil |
-
1987
- 1987-08-06 JP JP12077587U patent/JPS6425748U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892938A (en) * | 1981-11-30 | 1983-06-02 | Matsushita Electric Ind Co Ltd | Flaw measuring device |
| JPS5944604A (en) * | 1982-09-08 | 1984-03-13 | Nippon Kokan Kk <Nkk> | Detection of seam position of pickled coil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381511B2 (en) | 2003-06-02 | 2008-06-03 | Ricoh Company, Ltd. | Photoreceptor, image forming method and image forming apparatus using the photoreceptor, process cartridge using the photoreceptor and coating liquid for the photoreceptor |
| JP2008183589A (en) * | 2007-01-30 | 2008-08-14 | Nippon Steel Engineering Co Ltd | Method of detecting joined place |
| JP2010008297A (en) * | 2008-06-30 | 2010-01-14 | Jfe Steel Corp | Detection method of position of welding hole |
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