CN1356186A - Linearl laser detector of plate shape - Google Patents
Linearl laser detector of plate shape Download PDFInfo
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- CN1356186A CN1356186A CN 02100348 CN02100348A CN1356186A CN 1356186 A CN1356186 A CN 1356186A CN 02100348 CN02100348 CN 02100348 CN 02100348 A CN02100348 A CN 02100348A CN 1356186 A CN1356186 A CN 1356186A
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Abstract
A laser detector for in-line measuring the flatness of steel band or plate in its cold rolling, hot rolling or straightening step is composed of steel band, supporting rollers, working rollers, longitudinal linear semiconducto laser device, transverse linear semiconductor laser device, longitudinal laser device supporter and position regulator, transverse laser device supporter and position regulator, camera supporter and position regulator, several planar array CCD cannerals and optical filters, and computer processing system. Its advantages include simple structure, easy operation and high precision.
Description
Technical field:
The invention belongs to the detection technique in the plate shape operation of rolling, be applicable to the on-line measurement of the strip glacing flatness of cold rolling, the hot rolling of iron and steel enterprise and aligning, finishing procedure.
Background technology:
The control of belt plate shape becomes the emphasis of countries in the world research.Realize that can the key that plate shape is controlled automatically be realize the online automatic detection of plate shape, provide plate shape information accurately and reliably because have only to plat control system, control system could be regulated executing agency to plate shape and be sent correct regulation and control instruction.Plate shape checkout gear can be divided into contact and contactless two kinds.At present, testing technique for shape of strip commonly used both at home and abroad has: cut apart the roller type tension detection technique, laser triangulation detection technique, Moire technique detection technique.
Cutting apart roll-type survey tension plate shape testing instrument is a kind of contact plate shape checkout gear, detect principle for being with steel to cutting apart the distribution of roll pressure along the strip width direction by measuring, obtain the distribution of the inner tensile stress broad ways of band steel, the relative elongation of extrapolating band steel longitudinal fiber bar distributes, thereby obtains the information of plate shape glacing flatness.Cut apart roll-type survey tension plate shape testing instrument and be suitable for cold rolling strip steel plate shape detection, the plate shape that is unsuitable for cut deal is detected.In addition, because belonging to contact, this detection mode detects the belt steel surface that weares and teares easily, and complex structure, cost height.
From the development of plate shape checkout gear in the last few years, contactless plate shape checkout gear is occupied an leading position gradually.This mainly is because contactless plate profile instrument has simple in structure, harmless belt steel surface, advantage such as is easy to safeguard, price is low.Typical contactless plate shape checkout gear has: laser triangulation, Moire technique.
The essence of laser triangulation is to use the laser detection displacement.The flatness measurement that is used for hot-strip the earliest.Its principle is: along the strip width direction 3 above laser displacement sensors are set, measure the displacement of band steel because of the shape wave bob by laser displacement sensor, extrapolate along the longitudinal fiber length of strip width direction difference, thereby obtain plate shape information.Because this flatness measurement method is simple, response speed is fast, and is simple in structure, and online data is handled easily and realized, still is widely used in the plate shape measurement field up to now.But laser triangulation can't be avoided owing to the band steel vibrates the measure error that causes.This error sometimes even can make measurement result opposite fully with true plate shape situation.For plat control system provides full of prunes information.And measure because this measuring method belongs to discrete point, the plate shape information that provides is limited.
The measuring principle of Moire technique is: the illumination light of sending from spot light projects grid by on the measuring tape steel, and along with the variation of band steel shape, the grid image that forms at belt steel surface can be deformed into different " distortion grids ".If go to observe " distortion grid " by grid from another point, just can see the Moire fringe contour that two overlap of grating form.Because the distortion grid is comprising by the three-dimensional information of measuring tape steel shape, therefore, More's contour reflects by the 3D shape of measuring tape steel.Moire technique belongs to method for measuring three-dimensional shape, can measure the true shape of band steel in real time, thereby can obtain plate shape information in real time.Can overcome the band steel by suitable data processing beats to the influence of glacing flatness.Yet when adopting the grid irradiation to measure belt plate shape, need a large-scale heat-resisting grid.In actual measurement, the processing of large-scale grid, heat-resisting, distortion, and near tested hot-strip installation etc., all hindered the reliability of measuring system.
It is a kind of simple in structure that the object of the invention is to provide, and can accurately measure the contactless plate shape checkout gear of the glacing flatness of band steel.
Summary of the invention:
The present invention relates to a kind of linear pattern Laser Slabs shape checkout gear, this device is by band steel (1), backing roll (2), working roll (3), vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6), camera bracing frame and situation monitoring mechanism (8), 1～20 area array CCD camera and optical filter (9), computer processing system (10) is formed, it is characterized in that this device installed 1～20 vertical linear pattern semiconductor laser generator (7), horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4) also have been installed simultaneously, 1～20 horizontal linear pattern semiconductor laser generator (5), can regulate distance and laser beam angle of inclination between the laser beam that shines on the strip by vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6) and horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4), distance between the laser beam is 20mm～5000mm, and the laser beam angle of inclination is 15 °～75 °.
Aforesaid plate shape checkout gear, an installation number average that it is characterized in that vertical linear pattern semiconductor laser generator (7) and horizontal linear pattern semiconductor laser generator (5) are 3～7 and are the best; Distance between the laser beam is equidistant irradiation, and distance is that 40mm～300mm is the best, and the laser beam angle of inclination is 30 °～60 ° and is the best.
Structural principle of the present invention is as shown in Figure 1: point type semiconductor laser generator expands bundle through the post mirror, forms linear pattern laser.Use such 1～20 linear pattern laser instrument (7),, make the linear pattern laser instrument along vertical (rolling direction) the equidistant oblique illumination of strip by vertical laser position angle regulating and controlling mechanism (6).The angle of inclination is 15 °～75 °.Shine between the laser beam on the strip apart from 20mm～5000mm.Use 1～20 same linear pattern laser instrument (5),, make it along the significant points such as middle part, limit portion and 1/4 limit portion of strip lateral inclination irradiation strip by horizontal laser position angle regulating and controlling mechanism (4).Along strip laterally, directly over vertical, horizontal laser rays intersection point, place 1～20 area array CCD camera, make it to lay respectively at middle part, limit portion and the 1/4 limit portion of strip by the situation monitoring mechanism (8) of camera.Before each CCD camera, optical filter is installed, with the light source that filters out impurities (as hot rolled strip time near infrared light).If the strip surface is smooth, projecting then that longitudinal and transverse two on the strip be reflected among the CCD to laser rays all is straight lines, if there is shape wave on the strip surface, then project longitudinal and transverse two on the strip to laser rays be curve when being reflected among the CCD.The vertical and horizontal curve is in conjunction with the three-dimensional information that can obtain the strip deflection deformation.The image that comprises laser rays of each CCD picked-up is carried out amalgamation, form the horizontal complete image of a former band, then image is carried out image and handle, extract the indicatrix in the image, the analytical characteristic curve finally obtains plate shape glacing flatness information.Perhaps every width of cloth ccd image is carried out Treatment Analysis respectively, handle the indicatrix in every width of cloth image, carry out analysis-by-synthesis at last, obtain the glacing flatness information of plate shape.
The computer control system course of work as shown in Figure 2.Import longitudinal and transverse two to laser instrument incidence angle and positional information to computer, computer is by stepping motor control card, control longitudinal and transverse two to laser instrument and CCD cam movement to assigned address.CCD camera picked-up plate shape image information enters computer through image pick-up card and handles the plate shape information that obtains.The computer that plate shape information is sent to the template control system is finished plate shape control task.
The present invention is simple in structure, is convenient to make, maintenance and operation, and expense is low, can be used for various strips (hot rolling, cold rolling thin, in, slab) plate shape detect; And, therefore can obtain the three dimensional panel shape information of any position of belt steel surface owing to be to adopt horizontal continuity point to measure, can effectively avoid because the measure error of being with the vibration of steel to cause, and not damage belt steel surface.
Description of drawings:
Fig. 1 is a linear pattern laser template measurement mechanism structure principle chart.
Fig. 2 is that computer control system and data are handled schematic diagram.
The specific embodiment:
Embodiment 1. is by band steel (1), backing roll (2), working roll (3), horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4), 3 horizontal linear pattern semiconductor laser generators (5), vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6), 3 vertical linear pattern semiconductor laser generators (7), camera bracing frame and situation monitoring mechanism (8), 5 area array CCD cameras and optical filter (9), computer processing system (10) is formed, linear pattern laser template measurement mechanism, distance between the laser beam adopts equidistant irradiation, distance is 100mm, and the laser beam angle of inclination is 35 °.
Embodiment 2. is by band steel (1), backing roll (2), working roll (3), horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4), 5 horizontal linear pattern semiconductor laser generators (5), vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6), 5 vertical linear pattern semiconductor laser generators (7), camera bracing frame and situation monitoring mechanism (8), 5 area array CCD cameras and optical filter (9), computer processing system (10) is formed, linear pattern laser template measurement mechanism, distance between the laser beam adopts equidistant irradiation, distance is 50mm, and the laser beam angle of inclination is 45 °.
Embodiment 3. is by band steel (1), backing roll (2), working roll (3), horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4), 7 horizontal linear pattern semiconductor laser generators (5), vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6), 7 vertical linear pattern semiconductor laser generators (7), camera bracing frame and situation monitoring mechanism (8), 8 area array CCD cameras and optical filter (9), computer processing system (10) is formed, linear pattern laser template measurement mechanism, distance between the laser beam adopts equidistant irradiation, distance is 30mm, and the laser beam angle of inclination is 40 °.
Claims (2)
1. the present invention relates to a kind of linear pattern Laser Slabs shape checkout gear, this device is by band steel (1), backing roll (2), working roll (3), vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6), camera bracing frame and situation monitoring mechanism (8), 1～20 area array CCD camera and optical filter (9), computer processing system (10) is formed, it is characterized in that this device installed 1～20 vertical linear pattern semiconductor laser generator (7), horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4) also have been installed simultaneously, 1～20 horizontal linear pattern semiconductor laser generator (5), can regulate distance and laser beam angle of inclination between the laser beam that shines on the strip by vertical laser instrument bracing frame and laser positions angle regulating and controlling mechanism (6) and horizontal laser instrument bracing frame and laser positions angle regulating and controlling mechanism (4), distance between the laser beam is 20mm～5000mm, and the laser beam angle of inclination is 15 °～75 °.
2. plate shape checkout gear as claimed in claim 1, an installation number average that it is characterized in that vertical linear pattern semiconductor laser generator (7) and horizontal linear pattern semiconductor laser generator (5) are 3～7 and are the best; Distance between the laser beam is equidistant irradiation, and distance is that 40mm～300mm is the best, and the laser beam angle of inclination is 30 °～60 ° and is the best.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021003483A CN1161194C (en) | 2002-01-11 | 2002-01-11 | Linearl laser detector of plate shape |
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|---|---|---|---|
| CNB021003483A CN1161194C (en) | 2002-01-11 | 2002-01-11 | Linearl laser detector of plate shape |
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| CN1356186A true CN1356186A (en) | 2002-07-03 |
| CN1161194C CN1161194C (en) | 2004-08-11 |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336618C (en) * | 2005-12-20 | 2007-09-12 | 太原理工大学 | Capacitance sensor type on-line steel band deviation detecting system |
| CN101264485B (en) * | 2007-03-16 | 2010-06-23 | 宝山钢铁股份有限公司 | Magnetic suspension type dynamic sheet shape testing method |
| CN101221040B (en) * | 2007-01-11 | 2010-07-21 | 宝山钢铁股份有限公司 | Steel bar plate dimensional measurement method and device |
| CN101852595A (en) * | 2010-06-20 | 2010-10-06 | 武汉钢铁(集团)公司 | Online sheet shape measurer |
| CN101979168A (en) * | 2010-10-13 | 2011-02-23 | 北京金自天正智能控制股份有限公司 | High-precision online measuring instrument and measuring method for strip shape of plate and strip |
| CN101450352B (en) * | 2007-12-04 | 2011-06-15 | 上海宝钢工业检测公司 | Tandem-mill strip-steel vibration marks detection method |
| CN102500627A (en) * | 2011-10-19 | 2012-06-20 | 北京金自天正智能控制股份有限公司 | Plate width, side shape and side defect measuring instrument and measuring method thereof |
| CN103128099A (en) * | 2013-02-25 | 2013-06-05 | 南通宝钢钢铁有限公司 | System and method for hot rolling |
| CN103302111A (en) * | 2013-07-01 | 2013-09-18 | 莱芜钢铁集团有限公司 | Steel section bending online measurement device and steel section bending online measurement method |
| CN103984825A (en) * | 2014-05-20 | 2014-08-13 | 南京航空航天大学 | Three-dimensional plate shape dynamic simulation method |
| CN104174703A (en) * | 2014-07-09 | 2014-12-03 | 燕山大学 | Device for online detection of medium plate flatness |
| CN104936713A (en) * | 2012-12-11 | 2015-09-23 | 首要金属科技奥地利有限责任公司 | Flatness measuring and measuring of residual stresses for a metallic flat product |
| CN105444676A (en) * | 2014-09-30 | 2016-03-30 | 宝山钢铁股份有限公司 | Measuring probe multi-directional positioning device applicable to online scanning |
| CN105527978A (en) * | 2014-09-29 | 2016-04-27 | 宝山钢铁股份有限公司 | Device and method for controlling lift-off value |
| CN106323203A (en) * | 2015-06-29 | 2017-01-11 | 罗伯特·博世有限公司，香港 | Surface flatness indicating method and device |
| CN106345824A (en) * | 2016-08-25 | 2017-01-25 | 杭州五星铝业有限公司 | Battery-foil multi-use variable off-line sheet meter |
| CN106984654A (en) * | 2017-04-14 | 2017-07-28 | 邹平德利科技板材有限公司 | The offline template detection means of novel aluminium foil and its detection method |
| CN109108096A (en) * | 2018-08-20 | 2019-01-01 | 山西太钢不锈钢股份有限公司 | A kind of hot-rolled leveling unit Laser Slabs shape monitoring method and its system |
| CN109675966A (en) * | 2019-02-13 | 2019-04-26 | 南通航力重工机械有限公司 | A kind of shear machine testing smoothing feeding mechanism |
| CN109675936A (en) * | 2019-01-13 | 2019-04-26 | 上海务宝智能装备有限公司 | Strip shape wave on-line detecting system and method |
| CN111054782A (en) * | 2019-12-31 | 2020-04-24 | 太原科技大学 | Wide and thick plate shape detection device and method |
| CN111215458A (en) * | 2019-11-12 | 2020-06-02 | 中冶京诚工程技术有限公司 | Rolling mill area production equipment with laser scribing positioning device and hot rolling production line |
| CN112212790A (en) * | 2020-09-29 | 2021-01-12 | 黄献泛 | Use method of intelligent measuring device for cement concrete prefabricated part production |
| CN112964178A (en) * | 2021-02-07 | 2021-06-15 | 佛山科学技术学院 | Amorphous strip transmission position measuring method and device |
| CN115647079A (en) * | 2022-12-27 | 2023-01-31 | 北京科技大学 | Offline comprehensive plate shape detector and detection method |
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| CN100460099C (en) * | 2006-12-08 | 2009-02-11 | 广州珠江钢铁有限责任公司 | Rolling process of hot rolled steel sheet |
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2002
- 2002-01-11 CN CNB021003483A patent/CN1161194C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100336618C (en) * | 2005-12-20 | 2007-09-12 | 太原理工大学 | Capacitance sensor type on-line steel band deviation detecting system |
| CN101221040B (en) * | 2007-01-11 | 2010-07-21 | 宝山钢铁股份有限公司 | Steel bar plate dimensional measurement method and device |
| CN101264485B (en) * | 2007-03-16 | 2010-06-23 | 宝山钢铁股份有限公司 | Magnetic suspension type dynamic sheet shape testing method |
| CN101450352B (en) * | 2007-12-04 | 2011-06-15 | 上海宝钢工业检测公司 | Tandem-mill strip-steel vibration marks detection method |
| CN101852595A (en) * | 2010-06-20 | 2010-10-06 | 武汉钢铁(集团)公司 | Online sheet shape measurer |
| CN101979168A (en) * | 2010-10-13 | 2011-02-23 | 北京金自天正智能控制股份有限公司 | High-precision online measuring instrument and measuring method for strip shape of plate and strip |
| CN101979168B (en) * | 2010-10-13 | 2012-12-19 | 北京金自天正智能控制股份有限公司 | High-precision online measuring instrument and measuring method for strip shape of plate and strip |
| CN102500627A (en) * | 2011-10-19 | 2012-06-20 | 北京金自天正智能控制股份有限公司 | Plate width, side shape and side defect measuring instrument and measuring method thereof |
| CN104936713A (en) * | 2012-12-11 | 2015-09-23 | 首要金属科技奥地利有限责任公司 | Flatness measuring and measuring of residual stresses for a metallic flat product |
| CN104936713B (en) * | 2012-12-11 | 2017-05-10 | 首要金属科技奥地利有限责任公司 | Flatness measuring and measuring of residual stresses for a metallic flat product |
| CN103128099A (en) * | 2013-02-25 | 2013-06-05 | 南通宝钢钢铁有限公司 | System and method for hot rolling |
| CN103128099B (en) * | 2013-02-25 | 2016-01-06 | 南通职业大学 | A kind of hot rolling system and method |
| CN103302111B (en) * | 2013-07-01 | 2015-05-27 | 莱芜钢铁集团有限公司 | Steel section bending online measurement device and steel section bending online measurement method |
| CN103302111A (en) * | 2013-07-01 | 2013-09-18 | 莱芜钢铁集团有限公司 | Steel section bending online measurement device and steel section bending online measurement method |
| CN103984825A (en) * | 2014-05-20 | 2014-08-13 | 南京航空航天大学 | Three-dimensional plate shape dynamic simulation method |
| CN103984825B (en) * | 2014-05-20 | 2017-02-15 | 南京航空航天大学 | Three-dimensional plate shape dynamic simulation method |
| CN104174703A (en) * | 2014-07-09 | 2014-12-03 | 燕山大学 | Device for online detection of medium plate flatness |
| CN104174703B (en) * | 2014-07-09 | 2016-03-02 | 燕山大学 | A kind of cut deal glacing flatness on-line measuring device |
| CN105527978A (en) * | 2014-09-29 | 2016-04-27 | 宝山钢铁股份有限公司 | Device and method for controlling lift-off value |
| CN105444676A (en) * | 2014-09-30 | 2016-03-30 | 宝山钢铁股份有限公司 | Measuring probe multi-directional positioning device applicable to online scanning |
| CN105444676B (en) * | 2014-09-30 | 2018-07-06 | 宝山钢铁股份有限公司 | Suitable for the multi-faceted positioning device of online scanning survey probe |
| CN106323203A (en) * | 2015-06-29 | 2017-01-11 | 罗伯特·博世有限公司，香港 | Surface flatness indicating method and device |
| CN106345824B (en) * | 2016-08-25 | 2018-08-17 | 杭州五星铝业有限公司 | Battery foil multipurpose can be changed offline template instrument |
| CN106345824A (en) * | 2016-08-25 | 2017-01-25 | 杭州五星铝业有限公司 | Battery-foil multi-use variable off-line sheet meter |
| CN106984654A (en) * | 2017-04-14 | 2017-07-28 | 邹平德利科技板材有限公司 | The offline template detection means of novel aluminium foil and its detection method |
| CN109108096A (en) * | 2018-08-20 | 2019-01-01 | 山西太钢不锈钢股份有限公司 | A kind of hot-rolled leveling unit Laser Slabs shape monitoring method and its system |
| CN109675936A (en) * | 2019-01-13 | 2019-04-26 | 上海务宝智能装备有限公司 | Strip shape wave on-line detecting system and method |
| CN109675966A (en) * | 2019-02-13 | 2019-04-26 | 南通航力重工机械有限公司 | A kind of shear machine testing smoothing feeding mechanism |
| CN111215458A (en) * | 2019-11-12 | 2020-06-02 | 中冶京诚工程技术有限公司 | Rolling mill area production equipment with laser scribing positioning device and hot rolling production line |
| CN111054782A (en) * | 2019-12-31 | 2020-04-24 | 太原科技大学 | Wide and thick plate shape detection device and method |
| CN111054782B (en) * | 2019-12-31 | 2021-08-13 | 太原科技大学 | Wide and thick plate shape detection device and method |
| CN112212790A (en) * | 2020-09-29 | 2021-01-12 | 黄献泛 | Use method of intelligent measuring device for cement concrete prefabricated part production |
| CN112964178A (en) * | 2021-02-07 | 2021-06-15 | 佛山科学技术学院 | Amorphous strip transmission position measuring method and device |
| CN115647079A (en) * | 2022-12-27 | 2023-01-31 | 北京科技大学 | Offline comprehensive plate shape detector and detection method |
| CN115647079B (en) * | 2022-12-27 | 2023-04-28 | 北京科技大学 | Off-line comprehensive plate shape detector and detection method |
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Assignee: Guangzhou Xinnan Digital Control Technology Co., Ltd. Assignor: University of Science and Technology Beijing Contract fulfillment period: 2009.5.12 to 2014.5.12 contract change Contract record no.: 2009990000699 Denomination of invention: Linearl laser detector of plate shape Granted publication date: 20040811 License type: Exclusive license Record date: 2009.6.29 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.12 TO 2014.5.12; CHANGE OF CONTRACT Name of requester: GUANGZHOU XINNAN NUMERICAL CONTROL SCIENCE AND TEC Effective date: 20090629 |
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