KR20020050832A - 고온물체 속도측정장치 및 방법 - Google Patents
고온물체 속도측정장치 및 방법 Download PDFInfo
- Publication number
- KR20020050832A KR20020050832A KR1020000080016A KR20000080016A KR20020050832A KR 20020050832 A KR20020050832 A KR 20020050832A KR 1020000080016 A KR1020000080016 A KR 1020000080016A KR 20000080016 A KR20000080016 A KR 20000080016A KR 20020050832 A KR20020050832 A KR 20020050832A
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- South Korea
- Prior art keywords
- polarization
- laser
- light
- steel sheet
- beams
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 title claims description 3
- 230000010287 polarization Effects 0.000 claims abstract description 63
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 230000001678 irradiating effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 15
- 239000004065 semiconductor Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
- G01P3/685—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light for projectile velocity measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
Claims (3)
- 2개의 레이저 빔을 이송되는 강판에 조사하고 그로 인해 산란되는 산란광의 세기를 광검출기에서 검출한 후 주파수 분석수단과 속도측정수단을 통해 강판의 이송속도를 측정하는 속도측정장치에 있어서,레이저 빔을 조사하는 레이저와, 상기 레이저에서 조사된 레이저 빔을 주파수가 다른 2개의 빔으로 나누는 브래그 셀(Brag cell)과, 상기 브래그 셀로 인해 분할된 2개의 빔을 각각 전송하는 광파이버와, 상기 광파이버에 의해 각각 전송되는 레이저 빔을 각각 θ의 각도로 측정대상인 고온의 강판의 동일위치에 조사하는 센서헤드와, 상기 강판에서 산란된 산란광을 전송하는 광파이버와, 상기 광파이버를 통해 전송된 광의 세기를 검출하는 광검출기와, 상기 광검출기에서 검출한 광의 세기를 통해 주파수를 분석하는 주파수 분석수단 및, 상기 주파수 분석수단을 통해 분석한 주파수를 통해 파형으로 신호처리하여 강판의 이송속도를 측정하는 속도측정수단을 포함하며,상기 센서헤드는 상기 광파이버를 통해 각각 전송되는 레이저 빔을 수직편광와 수평편광으로 나누는 편광용 광분할기와, 상기 편광용 광분할기에서 나누어진 수평편광을 수직편광으로 변환하는 편광회절자 및, 상기 편광회절자에서 각각 변환된 수직편광을 이전의 수직편광과 합쳐 상기 강판에 조사하는 다른 편광용 광분할기를 포함하는 것을 특징으로 하는 고온물체 속도측정장치.
- 제1항에 있어서, 상기 산란광에서 발생되는 고온 잡음광의 영향을 제거하는 단파장 투과필터를 더 포함하는 것을 특징으로 하는 고온물체 속도측정장치.
- 2개의 레이저 빔을 이송되는 강판에 조사하고 그로 인해 산란되는 산란광의 세기를 통해 강판의 이송속도를 측정하는 속도측정방법에 있어서,레이저 빔을 조사하는 조사단계와, 조사된 레이저 빔을 주파수가 다른 2개의 빔으로 나누는 분할단계와, 분할된 2개의 빔을 각각 전송하는 전송단계와, 각각 전송된 레이저 빔을 수직편광와 수평편광으로 나누는 분할단계와, 분할된 수평편광을 수직편광으로 각각 변환하는 변환단계와, 각각 변환된 수직편광을 이전의 수직편광과 합쳐 상기 강판에 조사하는 조사단계와, 상기 강판에서 산란된 산란광을 전송하는 전송단계와, 전송된 산란광의 세기를 검출하는 검출단계와, 검출한 산란광의 세기를 통해 주파수를 분석하는 분석단계 및, 분석한 주파수를 통해 파형으로 신호처리하여 강판의 이송속도를 측정하는 측정단계를 포함하는 것을 특징으로 하는 고온물체 속도측정방법.
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KR10-2000-0080016A KR100448440B1 (ko) | 2000-12-22 | 2000-12-22 | 고온물체 속도측정장치 및 방법 |
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KR10-2000-0080016A KR100448440B1 (ko) | 2000-12-22 | 2000-12-22 | 고온물체 속도측정장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20020050832A true KR20020050832A (ko) | 2002-06-28 |
KR100448440B1 KR100448440B1 (ko) | 2004-09-13 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100797354B1 (ko) * | 2006-07-24 | 2008-01-22 | 주식회사 포스코 | 산업용 레이저 속도 측정장치 |
WO2009028883A1 (en) * | 2007-08-28 | 2009-03-05 | Posco | Device and method for optically detecting surface defect of round wire rod |
RU2638110C1 (ru) * | 2016-06-28 | 2017-12-11 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | Лазерный доплеровский измеритель скорости |
KR20210036616A (ko) * | 2019-09-26 | 2021-04-05 | 이재혁 | 레이저 헤드 보호 장치 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100799445B1 (ko) | 2006-07-07 | 2008-01-30 | 주식회사 포스코 | 산업용 레이저 속도 측정방법 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4345412C2 (de) * | 1993-11-26 | 1999-11-11 | Boll & Kirch Filter | Filterkerze |
KR100217854B1 (ko) * | 1995-12-30 | 1999-09-01 | 이구택 | 강판의 길이측정방법 및 그 장치 |
KR100299445B1 (ko) * | 1996-12-19 | 2001-11-22 | 이구택 | 고온의열연강판의변태량측정장치및그방법 |
KR19980053194A (ko) * | 1996-12-26 | 1998-09-25 | 김종진 | 열연강판의 선후단부 크롭절단방법 |
-
2000
- 2000-12-22 KR KR10-2000-0080016A patent/KR100448440B1/ko active IP Right Grant
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100797354B1 (ko) * | 2006-07-24 | 2008-01-22 | 주식회사 포스코 | 산업용 레이저 속도 측정장치 |
WO2009028883A1 (en) * | 2007-08-28 | 2009-03-05 | Posco | Device and method for optically detecting surface defect of round wire rod |
KR100891842B1 (ko) * | 2007-08-28 | 2009-04-07 | 주식회사 포스코 | 원형 선재 광학결함 검출장치 및 방법 |
US8306308B2 (en) | 2007-08-28 | 2012-11-06 | Posco | Method for optically detecting surface defect of round wire rod |
RU2638110C1 (ru) * | 2016-06-28 | 2017-12-11 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | Лазерный доплеровский измеритель скорости |
KR20210036616A (ko) * | 2019-09-26 | 2021-04-05 | 이재혁 | 레이저 헤드 보호 장치 |
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Publication number | Publication date |
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KR100448440B1 (ko) | 2004-09-13 |
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