CN1307225A - Measurement method by outomatic laser legnth measuring instrument - Google Patents
Measurement method by outomatic laser legnth measuring instrument Download PDFInfo
- Publication number
- CN1307225A CN1307225A CN 00100574 CN00100574A CN1307225A CN 1307225 A CN1307225 A CN 1307225A CN 00100574 CN00100574 CN 00100574 CN 00100574 A CN00100574 A CN 00100574A CN 1307225 A CN1307225 A CN 1307225A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- survey
- laser
- measuring
- measurement
- 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
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The measurement method uses measuring systems in the required number. The measurement system includes measuring reception box installed on one side of rolling bearing, optical filter to eliminate background light, receiving lens to image the steel plate to CCD, and after CCD light transfer the received light signal into electric signal fed to later processing circuit, processing circuit to amplify and digitize the electric signal, and computer terminal to calculate the length of steel plate.
Description
The present invention relates to a kind of industrial On-line Measuring Method, relate in particular to a kind of measuring method of utilizing the automatic horizontal metroscope of laser.
The equipment and the means of linear measure longimetry that prior art is used in the production run of hot rolled steel plate and control shear applications mainly comprise two classes: manual line is measured manually line shearing and the control of scale dolly is sheared.The process of these two kinds of methods and the problem of existence are described below.
With regard to manual mode, the operating process that this hand-guided is sheared comprises: a scale is set before the length shearer, is carved with the distance value apart from cutting edge on the scale.After being sheared steel plate arrival, the router marks the head shear line according to the wrench shape.The operative employee is according to the head of this line shearing steel plate.The router marks according to steel plate tail shape and the clipped position of production needs (scale or non-scale) with afterbody when shearing head.The operative employee controls steel plate and arrives the clipped position draw and shear.Finish shear history at last.Repeat above each step, enter next operating process.
The problem that the method exists mainly comprises: linear measure longimetry low precision, general 100mm one lattice of the scale on the scale.And temperature compensation will lean on manually rule of thumb and estimate, further influences measuring accuracy.Lumber recovery is low, and the mode of manually ruling does not occur short chi because error is big in order to guarantee product, adopts the length surplus of amplifying steel plate to reduce the lumber recovery of steel plate.Production efficiency is low, owing to adopt manual line and common alternating current generator, locating speed is slow, influences production efficiency.Labor strength is big, and environment is abominable.Temperature when steel plate is produced is generally about 200 ℃, sometimes up to 500 ℃.
With regard to the measurement control method of scale dolly, the application of scale dolly is developed for the poor efficiency, the low precision that solve scale plate production in the steel plate production run.The method of work of the method as shown in Figure 1.The device context that has shown the location dolly among the figure is installed.On installation one cover positioning system and basis 4 above the production roller-way, behind the shearer 1.The trolley 2 that wherein can move is a working portion.Photoelectric encoder and rack-and-pinion transmission 3 methods are adopted in the location survey of dolly and transmission.In the process of producing the scale steel plate, the operative employee's control of the definite back of sheared length will be located dolly 2 and be moved.The displacement of photoelectric encoder measurement and positioning dolly.The location dolly stops after the extension position that needs, and puts down the dolly baffle plate.Operative employee's operation roller to 6 will be waited to shear steel plate 5 and deliver to baffle position, and steel plate is forced to stop after installing to the location dolly.This moment, steel plate reached sheared length, and the operative employee operates scissors and carries out steel plate shearing.The operative employee lifts the dolly baffle plate and releases and shear the steel plate that finishes.This process is finished a shear history of steel plate.Repeat above process and promptly can shear next block plate.
The problem that the method exists mainly is: utilization contact type measurement localization method, and equipment bears bigger impulsive force, and equipment breaks down easily.Behind the dolly of steel plate bump location resilience is arranged, shear precision still is difficult to control.The equipment complexity is huge.Because steel plate is from focusing on more than 1 ton, inertia ratio is bigger among the operation.In order to allow steel plate stop to reach more than ten tons even tens tons of dolly, on production line a huge monster from important.And output investment ratio is bigger, and the site operation amount is bigger.The rising or falling speed of plant equipment is slow, and production efficiency is low.Can only shear the scale plate, can not use non-scale plate.
The object of the present invention is to provide a kind of new measuring method, to solve problems of the prior art.Method provided by the invention problem to be solved mainly comprises: the reconfiguration touch is measured as the non-contact measurement mode, improves the automaticity of system.Solve the linear measure longimetry precision problem of online production process light plate, improve the measuring accuracy of equipment.The shearing function is measured and controlled to scale and non-scale steel plate simultaneously.Realize the automatic and manual dual mode continuous speed adjustment of roller-way, improve locating speed in the steel plate shearing process.Reduce the volume and the site operation amount of equipment.
Laser provided by the invention is surveyed rectangular method automatically and is comprised: utilize laser to survey the long pruning cutting apparatus automatically, comprise laser length measuring machine, frequency-changing control system, computer control terminal etc.Laser length measuring machine is the test section of system.Terminal is the control center of system.Frequency conversion speed-adjusting system is the topworks of system.The operative employee sets the length of producing steel plate.Computing machine calculates temperature compensation value according to real-time steel billet temperature and steel grade.Put the roller table speed maximal value, make steel plate enter measurement zone.When tested steel plate enter measure the control area after, it is steel plate length apart from the distance of cutting edge that laser length measuring machine detects steel plate head in real time, sends the data in real time of measuring to terminal then.Terminal calculates the steel plate length that shear according to the length tolerance of the sheared length of setting, infrared thermometer temperature value measured, setting, head position and mathematics of control Model Calculation according to present steel plate goes out real-time roller-way travelling speed and given frequency values then, passes through the running frequency and the roller-way travelling speed of control system control of conversion device simultaneously.Send order out of service when steel plate arrives the clipped position computer-chronograph to control system, Frequency Converter Control system control roller-way is out of service.Computing machine sends cut command.This process is promptly finished a cycle of operation.
Accompanying drawing 1 is the location dolly investigating method synoptic diagram of prior art.
Accompanying drawing 2 is that laser of the present invention is surveyed long pruning cutting apparatus workflow diagram automatically.
Accompanying drawing 3 is laser transmitting system synoptic diagram of the present invention.
Accompanying drawing 4 is laser length measurement instrument measurement method synoptic diagram of the present invention.
According to laser length measurement instrument measurement method of the present invention, as shown in Figure 3, wherein laser instrument 1 sends laser and is directional light through collimating optical system 2 collimation.Beam expander optical system 3 expands bundle with directional light and is strip light spots, forms and measures the beam shape that needs.Adopting bar shaped light beam is in order to solve the beat measuring error that causes and can't measuring of steel plate in motion process.Reflective optics forms measurement with shining hot spot with the head that measuring beam shines tested steel plate.Steel plate is with the hot spot scattering.The method of work of laser length measuring machine is based on the method for triangulation.Because being subjected to the unit number restriction of CCD device and each receiving system of restriction measurement range under the condition that guarantees measuring accuracy of optical system can only accomplish about 3M.Therefore can adopt the method realization high-acruracy survey of a plurality of receiving system splicings greater than the measuring system of 3M for measured zone.Optical filter with the bias light filtering after the current effective receiver lens with the image formation by rays of steel plate scattering to CCD.The system's light signal that receives is given post processing electric circuit after the CCD opto-electronic conversion.Treatment circuit to signal amplify, binary conversion treatment.Give terminal then.Terminal judges that at first steel plate is positioned at that measurement zone after receiving signal, goes out steel plate at the position of measurement zone X according to calculated signals.
X-steel plate head position
L-system object distance
F-optical system focal length
The position of Y-picture point on CCD
The angle of θ systematic optical axis and slotted line
The length value that computing machine calculates steel plate with the measurement area code and the extension position X of comprehensive steel plate.Calculation methods of length is as follows:
L-measures length
L
nThe length of-corresponding measurement zone
The X-measuring position
Laser length measuring machine is the core technology of system in this measuring method.
The technique effect that the present invention is reached compared with the prior art mainly contains: adopt laser and CCD measuring technique, realized non-contact measurement.Remove the parts that withstand shocks in the equipment, can improve the serviceable life and the time between failures of equipment to a great extent.The measuring accuracy of system and control accuracy height, measuring accuracy are ± 5mm control shear precision 0-15mm.Adopt the automatic accounting temperature compensating length of infrared temperature measurement system value, eliminate human factor measuring the influence of shearing.Use behind the native system steel plate shearing and aim at the time by bringing up to for 10 seconds in original 25 seconds.Enhance productivity.Scale and non-scale plate have same shear precision.Use performance element raising system control accuracy and the speed of variable-frequence governor, alleviate working strength of workers as system.Has energy-conservation effect simultaneously.Because the length surplus of the raising steel plate shearing of length shear precision reaches 10mm by being reduced in the 15mm more than the original 25mm on the material-saving length direction of every block plate.Equipment is small and exquisite, flexible, and installing and debugging does not need the large-scale retrofit work of production line seat.Because equipment is installed on the both sides of production line, the maintenance of equipment and maintenance do not influence the normal operation of production line.
Below to one embodiment of the present of invention, promptly realize that at middle board assembly line automatic shearing is described.Laser is surveyed the long pruning cutting apparatus automatically and is comprised laser length measuring machine, frequency-changing control system, computer measurement control terminal, operation board etc.Laser length measuring machine is the test section of system.Terminal is the control center of system.Frequency conversion speed-adjusting system is the topworks of system.
The automatic shearing work process of laser length measurement comprises: laser is surveyed the long pruning cutting apparatus automatically and is comprised laser length measuring machine, frequency-changing control system, computer control terminal etc.Laser length measuring machine is the test section of system.Terminal is the control center of system.Frequency conversion speed-adjusting system is the topworks of system.The operative employee sets the length of producing steel plate.Computing machine calculates temperature compensation value according to real-time steel billet temperature and steel grade.Obtain target sheared length value.Putting roller table speed is maximal value, makes steel plate enter measurement zone.When tested steel plate enter measure the control area after, it is steel plate length apart from the distance of cutting edge that laser length measuring machine detects steel plate head in real time, sends the data in real time of measuring to terminal then.Terminal goes out real-time roller-way travelling speed and given frequency values according to the target sheared length, the head position of steel plate, the mathematics of control Model Calculation that calculate, passes through the running frequency and the roller-way travelling speed of control system control of conversion device simultaneously.Send order out of service when steel plate arrives the clipped position computer-chronograph to control system, Frequency Converter Control system control roller-way is out of service.Computing machine sends cut command.This process is promptly finished a cycle of operation.
The laser length measurement instrument measurement method comprises: laser instrument, optical alignment system, beam expander optical system are made firing box be installed on roller-way one side.The reflecting prism optical system is installed in the roller-way.Laser instrument 1 sends laser and is directional light through collimating optical system 2 collimations.Beam expander optical system 3 expands bundle with directional light and is strip light spots, forms and measures the beam shape that needs.Bar shaped light beam can accurately be caught the head of steel plate.Reflective optics forms measurement with shining hot spot with the head that measuring beam shines tested steel plate.Steel plate scatters out luminous energy.The method of work of laser length measuring machine is based on the method for triangulation.Can only accomplish 3M owing to be subjected to the unit number restriction of CCD device and each receiving system of restriction measurement range under the condition that guarantees measuring accuracy of optical system.Therefore can adopt the method realization high-acruracy survey of a plurality of receiving system splicings greater than the measuring system of 3M for measured zone.Choose the measuring system quantity of use according to the needs of measuring.The principle of choosing foundation of quantity is: (measuring length range-initial measurement length)/3.The opposite side that receiving magazine is installed on roller-way will be measured.Optical filter with the bias light filtering after the current effective receiver lens with the image formation by rays of steel plate scattering to CCD.The system's light signal that receives is given post processing electric circuit after the CCD opto-electronic conversion.Treatment circuit to signal amplify, binary conversion treatment.Give terminal then.Terminal judges that at first steel plate head is positioned at that measurement zone after receiving signal, goes out steel plate head at the position of this measurement zone X according to calculated signals.
X-steel plate head position
L-system object distance
F-optical system focal length
The position of Y-picture point on CCD
The angle of θ systematic optical axis and slotted line
The length value that computing machine calculates steel plate with the measurement area code N and the extension position X of comprehensive steel plate.Calculation methods of length is as follows:
L-measures length
L
nThe length of-corresponding measurement zone
The X-measuring position
N steel plate head place measurement zone
Claims (8)
1, a kind of laser length measurement method is characterized in that: laser instrument, optical alignment system, beam expander optical system are made firing box and are installed on roller-way one side; The reflecting prism optical system is installed in the roller-way; Laser instrument sends laser and is directional light through the collimating optical system collimation; Beam expander optical system expands bundle with directional light and is strip light spots, forms and measures the beam shape that needs; Reflective optics forms measurement with shining hot spot with the head that measuring beam shines tested steel plate; Steel plate scatters out luminous energy.
2,, it is characterized in that choosing the measuring system quantity of use according to the needs of measuring according to the rectangular method of the survey of claim 1.
3,, it is characterized in that measuring the opposite side that receiving magazine is installed on roller-way according to the rectangular method of the survey of claim 1.
4, according to the rectangular method of the survey of claim 1, it is characterized in that optical filter is with the bias light filtering after, by the current effective receiver lens with the image formation by rays of steel plate scattering to CCD.
5,, it is characterized in that the system's light signal that receives gives post processing electric circuit after the CCD opto-electronic conversion according to the rectangular method of the survey of claim 1.
6,, it is characterized in that treatment circuit amplifies, after the binary conversion treatment, gives terminal signal according to the rectangular method of the survey of claim 1.
7, according to the rectangular method of the survey of claim 1, it is characterized in that judging that at first steel plate head is positioned at that measurement zone after terminal receives signal, go out the position of steel plate head according to calculated signals at this measurement zone.
8,, it is characterized in that the length value that computing machine calculates steel plate with the measurement area code and the extension position of comprehensive steel plate according to the rectangular method of the survey of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00100574XA CN1136432C (en) | 2000-01-26 | 2000-01-26 | Measurement method by outomatic laser legnth measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00100574XA CN1136432C (en) | 2000-01-26 | 2000-01-26 | Measurement method by outomatic laser legnth measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1307225A true CN1307225A (en) | 2001-08-08 |
| CN1136432C CN1136432C (en) | 2004-01-28 |
Family
ID=4575541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00100574XA Expired - Lifetime CN1136432C (en) | 2000-01-26 | 2000-01-26 | Measurement method by outomatic laser legnth measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1136432C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101954512A (en) * | 2010-09-17 | 2011-01-26 | 重庆钢铁(集团)有限责任公司 | Medium-thick plate cut-to-length shearing method |
| CN102288784A (en) * | 2011-06-24 | 2011-12-21 | 上海瑞伯德智能系统科技有限公司 | Steel tube conveying state visual detection system based on structured light technology |
| CN104515471A (en) * | 2013-09-30 | 2015-04-15 | 宝山钢铁股份有限公司 | Method for measuring length of steel plate |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
| CN106392187A (en) * | 2016-06-22 | 2017-02-15 | 河北钢铁股份有限公司邯郸分公司 | Position-based steel rail length measurement system and measurement method |
| CN109740596A (en) * | 2018-12-28 | 2019-05-10 | 中冶京诚工程技术有限公司 | Intelligent video identification system and method for steel plate head cutting positioning |
-
2000
- 2000-01-26 CN CNB00100574XA patent/CN1136432C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101954512A (en) * | 2010-09-17 | 2011-01-26 | 重庆钢铁(集团)有限责任公司 | Medium-thick plate cut-to-length shearing method |
| CN102288784A (en) * | 2011-06-24 | 2011-12-21 | 上海瑞伯德智能系统科技有限公司 | Steel tube conveying state visual detection system based on structured light technology |
| CN102288784B (en) * | 2011-06-24 | 2012-10-10 | 上海瑞伯德智能系统科技有限公司 | Steel tube conveying state visual detection system based on structured light technology |
| CN104515471A (en) * | 2013-09-30 | 2015-04-15 | 宝山钢铁股份有限公司 | Method for measuring length of steel plate |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
| CN105136040B (en) * | 2015-07-24 | 2018-05-18 | 衡阳镭目科技有限责任公司 | A kind of method and device for measuring continuous casting fixed-length length |
| CN106392187A (en) * | 2016-06-22 | 2017-02-15 | 河北钢铁股份有限公司邯郸分公司 | Position-based steel rail length measurement system and measurement method |
| CN109740596A (en) * | 2018-12-28 | 2019-05-10 | 中冶京诚工程技术有限公司 | Intelligent video identification system and method for steel plate head cutting positioning |
| CN109740596B (en) * | 2018-12-28 | 2021-03-30 | 中冶京诚工程技术有限公司 | Intelligent video identification system and method for steel plate head cutting positioning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1136432C (en) | 2004-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104785960B (en) | A kind of robot welding equipment being applicable to network part vertical weld and welding method | |
| CN1136432C (en) | Measurement method by outomatic laser legnth measuring instrument | |
| CN103964154B (en) | Control method of combined positioning control system | |
| JPH03151180A (en) | Joint chasing type precision laser welding system | |
| CN102897503B (en) | Combined positioning control system | |
| CN114083051B (en) | Steel plate fixed-length shearing system and method based on line structured light | |
| CN203541170U (en) | T-shaped elevator guide rail straightener | |
| NL2028218B1 (en) | Device and method for automatically straightening body of scraper conveyor based on spatial position information capture | |
| CN100405009C (en) | Symmetrical closed laser arch dam deformation monitoring method | |
| CN1415976A (en) | Laser range finding method of robot system for cutting and ruling profile steel | |
| CN103438835A (en) | Device and method for detecting bending angle of plate | |
| CN209925010U (en) | Shield constructs section of jurisdiction position control device based on machine vision | |
| CN209927093U (en) | Shield tail clearance measuring device based on laser radar | |
| CN111649698A (en) | Non-contact steel pipe pile curvature radius measurement system | |
| CN1049995A (en) | Automatic cut-to-length sizes machine with functions of non-contact detection | |
| CN107457571A (en) | A kind of strand scale system and method | |
| CN214224118U (en) | Pushing construction monitoring structure of prestressed concrete continuous beam bridge | |
| CN211977844U (en) | Circular position measuring structure for measuring curvature radius of non-contact steel pipe pile | |
| CN114440797A (en) | Straightening detection device and method suitable for steel rails in whole road section | |
| CN112797962B (en) | Pushing construction monitoring structure and monitoring method for prestressed concrete continuous beam bridge | |
| CN107024163B (en) | A kind of laser detector for the pre- twisted blade of steam turbine | |
| CN203556830U (en) | Movable online casting blank length measuring device | |
| AU703606B2 (en) | A crane positioning system | |
| CN110193645A (en) | The accurate positioning method that continuous casting steel billet two is cut | |
| CN217101749U (en) | Accurate positioning system on assembly line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1086848 Country of ref document: HK |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHONGYUAN OPTOELECTRONIC MEASUREMENT + CONTROL TEC Free format text: FORMER OWNER: NO. 27 INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION Effective date: 20111125 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: NO. 27 INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY G Free format text: FORMER NAME: NO.27 ELECTRONICS INST., MINISTRY OF INFORMATION INDUSTRY |
|
| CP03 | Change of name, title or address |
Address after: 450007 1000 erudite Road, Zheng Dong New District, Henan, Zhengzhou Patentee after: NO.27 RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY Group Corp. Address before: 450005 No. 71, middle navigation road, Henan, Zhengzhou Patentee before: NO 27 ELECTRONICS INST MINISTR |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111125 Address after: 450007 1000 erudite Road, Zheng Dong New District, Henan, Zhengzhou Patentee after: Zhongyuan Photoelectric Measurement Control Technology Co. Address before: 450007 1000 erudite Road, Zheng Dong New District, Henan, Zhengzhou Patentee before: NO.27 RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY Group Corp. |
|
| C56 | Change in the name or address of the patentee |
Owner name: HE'NAN ZHONGYUAN PHOTOELECTRIC MEASUREMENT AND CON Free format text: FORMER NAME: ZHONGYUAN OPTOELECTRONIC MEASUREMENT + CONTROL TECHNOLOGY CO. |
|
| CP03 | Change of name, title or address |
Address after: 450007 1000 erudite Road, Zheng Dong New District, Zhengzhou Patentee after: HENAN ZHONGYUAN OPTOELECTRONIC MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Address before: 450007 1000 erudite Road, Zheng Dong New District, Henan, Zhengzhou Patentee before: Zhongyuan Photoelectric Measurement Control Technology Co. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20040128 |
|
| CX01 | Expiry of patent term |