KR100929016B1 - 와전류 센서를 이용한 도금강판의 용접점 검출 장치 - Google Patents
와전류 센서를 이용한 도금강판의 용접점 검출 장치 Download PDFInfo
- Publication number
- KR100929016B1 KR100929016B1 KR1020020081749A KR20020081749A KR100929016B1 KR 100929016 B1 KR100929016 B1 KR 100929016B1 KR 1020020081749 A KR1020020081749 A KR 1020020081749A KR 20020081749 A KR20020081749 A KR 20020081749A KR 100929016 B1 KR100929016 B1 KR 100929016B1
- Authority
- KR
- South Korea
- Prior art keywords
- steel sheet
- eddy current
- current sensor
- heads
- output signal
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Description
Claims (1)
- 도금강판의 용접점을 검출하는 장치에 있어서,도금강판의 용접점의 검출에 이용할 주파수 신호를 제공하는 오실레이터;상기 오실레이터로부터 주파수 신호를 입력받아 전류증폭하는 전력증폭기;각각, 상기 전력증폭기의 출력신호를 입력받아 자기장을 발생시키는 자화코일과 상기 자기장에 의해 도금강판에서 발생하는 와전류를 검출하는 검출코일을 갖는 두 개의 헤드로 구성되고, 상기 두 개의 헤드를 서로 가까이 위치시키고 두 헤드의 검출코일을 차동으로 결선한 와전류 센서;상기 두 개의 와전류 센서 헤드의 검출코일의 출력신호를 입력받아, 전처리하는 프리 앰프;상기 프리 앰프의 출력신호를 입력받아, 출력신호중에서 상기 와전류 센서로 입력된 주파수 부분만을 추출하는 락 인 앰프;상기 락 인 앰프가 추출한 주파수중에서 각종 노이즈를 제거하는 대역통과필터; 및상기 대역통과필터의 출력신호를 입력받아, 출력신호중에서 피크를 검출하는 피크 검출기를 포함하는 것을 특징으로 하는 와전류 센서를 이용한 도금강판의 용접점 검출 장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020081749A KR100929016B1 (ko) | 2002-12-20 | 2002-12-20 | 와전류 센서를 이용한 도금강판의 용접점 검출 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020081749A KR100929016B1 (ko) | 2002-12-20 | 2002-12-20 | 와전류 센서를 이용한 도금강판의 용접점 검출 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040055133A KR20040055133A (ko) | 2004-06-26 |
KR100929016B1 true KR100929016B1 (ko) | 2009-11-26 |
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KR1020020081749A KR100929016B1 (ko) | 2002-12-20 | 2002-12-20 | 와전류 센서를 이용한 도금강판의 용접점 검출 장치 |
Country Status (1)
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KR (1) | KR100929016B1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR200446524Y1 (ko) * | 2007-11-14 | 2009-11-05 | (주)레이나 | 금속물체의 결함 및 두께 측정용 검출기 |
CN104615032A (zh) * | 2014-11-28 | 2015-05-13 | 柳州振业焊接机电设备制造有限公司 | 一种全自动输送焊接装置的控制器 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020011372A (ko) * | 1999-03-18 | 2002-02-08 | 야마오카 요지로 | 결함 마킹방법 및 장치 |
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- 2002-12-20 KR KR1020020081749A patent/KR100929016B1/ko active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020011372A (ko) * | 1999-03-18 | 2002-02-08 | 야마오카 요지로 | 결함 마킹방법 및 장치 |
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KR20040055133A (ko) | 2004-06-26 |
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