CN203830424U - Symmetric double-laser plate shape detection device - Google Patents
Symmetric double-laser plate shape detection device Download PDFInfo
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- CN203830424U CN203830424U CN201420187035.6U CN201420187035U CN203830424U CN 203830424 U CN203830424 U CN 203830424U CN 201420187035 U CN201420187035 U CN 201420187035U CN 203830424 U CN203830424 U CN 203830424U
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Abstract
The utility model discloses a symmetric double-laser plate shape detection device. A pair of supporting rollers and a pair of working rollers are arranged at a plate inlet of the detection device, a portal frame is provided with a laser Doppler velocimeter and a matrix CMOS camera in the plate advancing direction, the laser Doppler velocimeter for detecting the plate running speed is installed on one side of the portal frame, and the plate inlet of the detection device is located on the side. The matrix CMOS camera for plate image acquisition is located on the other side of the portal frame. Two symmetrically-distributed rotatable line laser transmitters are installed under the matrix CMOS camera, and in a shooting region of the outputs of the matrix CMOS camera, the laser Doppler velocimeter and the matrix CMOS camera are connected with a computer, and inputs of the rotatable line laser transmitters are connected with the computer. The symmetric double-laser plate shape detection device adopts non-contact measurement, has the advantages of being high in measurement accuracy, high in speed and the like and meets the actual demand for current band steel production.
Description
Technical field
The utility model belongs to detection technique field, relates to the two Laser Slabs shape checkout gears of a kind of symmetrical expression.
Background technology
In band steel is produced, the control of plate shape is most important for raising strip surface quality, stable rolling process.It is the necessary condition that plate shape is controlled automatically that plate shape is detected automatically, and all plate shape information is all from plate shape checkout gear, and advanced strip-mill strip generally disposes plate shape on-line detecting system.
Plate shape checkout gear can be divided into contact and contactless two kinds.At present, conventional testing technique for shape of strip has the roller type tension of cutting apart detection technique, laser triangulation detection technique both at home and abroad.
Cutting apart roller type tension detection technique is a kind of contact type plate shape checkout gear, detect principle for by measurement with steel to cutting apart roll pressure along the distribution of strip width direction, obtain the distribution with the inner tensile stress broad ways of steel, the relative elongation of extrapolating with steel longitudinal fiber bar distributes, thereby obtains the information of plate shape glacing flatness.Cut apart roller type tension detection technique and be suitable for cold rolling thin band steel sheet shape detection, the plate shape that is unsuitable for cut deal is detected.In addition, cutting apart roller type tension checkout gear must contact with Cold-strip Steel Surface, because strip speed and roll speed are difficult to guarantee absolute consistent, contact-making surface with steel and roller has relative friction unavoidably, not only plate shape measurement roller easily scratches, and template measuring roller also can scratch belt steel surface, affect cold-strip steel template quality.
The measuring principle of Moire technique is that the illumination light of sending from spot light is irradiated to grid by measuring tape steel, and along with the variation with steel shape, the grid image forming 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.Yet while adopting 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.
Laser triangulation detection method is by measuring laser strip in the displacement of belt steel surface, contrasts with the laser strip position of demarcating, and by the measurement of a plurality of location points, the percentage elongation calculating with steel longitudinal fiber bar distributes.The method belongs to non-contact type and detects, equipment simplicity of design, and cost is lower, and the subject matter of existence is effectively to avoid the measure error causing with steel vibration.
Summary of the invention
The purpose of this utility model is to solve the accurate not shortcoming of existing plate shape checkout gear precision and cannot avoids vibration to cause the shortcoming of error, thereby provides a kind of novel symmetrical expression two laser detectors.
The utility model is comprised of portal frame, backing roll, working roll, LDV, Matrix C MOS camera, rotatable line laser transmitter and computer, sheet material entrance at checkout gear, be provided with a pair of backing roll and a pair of working roll, a pair of working roll is arranged in a pair of backing roll, portal frame is along being provided with LDV, Matrix C MOS camera on sheet material direct of travel, wherein for the LDV of the speed of service of drafting board material, be contained in a side of portal frame, the sheet material entrance that this side is checkout gear; For the Matrix C MOS camera of sheet material IMAQ, be positioned at the opposite side of portal frame; Two symmetrical rotatable line laser transmitter of laying are arranged on Matrix C MOS camera below, and outside the shooting area of Matrix C MOS camera, wherein the laser incident angle of rotatable line laser transmitter regulates by rotary chuck, its adjustable range is 15 °～30 °, and the input that the output of LDV and Matrix C MOS camera connects computer, rotatable line laser transmitter connects computer.
The features such as the utility model adopts non-contact measurement, has certainty of measurement high, and speed is fast, meet current actual demand of producing with steel.
Accompanying drawing explanation
Fig. 1 is the two Laser Slabs shape structure of the detecting device schematic diagrams of symmetrical expression.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, be the composition schematic diagram of the two Laser Slabs shape checkout gears of symmetrical expression of the present utility model.The two Laser Slabs shape checkout gears of symmetrical expression of the present utility model, comprise backing roll 1, working roll 2, LDV 4, Matrix C MOS camera 5, rotatable line laser transmitter 6, bracing frame 7.Basler industry CMOS camera for band steel image detecting element Bian, camera lens adopts that Nikon50mm focuses, light is adjustable camera lens.Camera is installed on across on the portal frame crossbeam with steel 3 widths, adjusts imaging plane and band steel transporting rail plane parallel that camera makes camera.The line laser light source of two symmetric configurations is arranged on the support across strip width direction, and laser incident angle can regulate continuously by rotary chuck.Doppler anemometer is arranged in before surveyed area, is used for the speed of service of drafting board band.
It is 30 °～60 ° that single laser oblique incidence formula laser triangulation detects common angle, and the two laser of symmetrical expression of the present embodiment is compared single laser more high-resolution, and this device is decreased to 15 °～30 ° by laser angle and detects.The two laser projections of symmetrical expression form parallel double laser rays to band steel plane.Distance between two laser that are arranged symmetrically with need to meet when band steel is when roller plane (highly for 0mm), and both sides lasing area is also crossing.The intersection that is the laser light face of symmetric double laser will be below roller plane.Thereby be applicable to the on-line measurement of the strip glacing flatness in the cold-rolled process of iron and steel enterprise.
Computer is mainly responsible for checkout equipment and is demarcated control, checkout equipment operating ambient temperature, controls and adjust line laser incident angle and communicate by letter with Doppler anemometer and obtain real-time strip speed parameter.Wherein demarcate to control and laser angle control is to realize by the control to stepper motor, temperature detection is to simulate Bian truck and PT100 temperature sensor is realized by ADAM4117.The image capturing system of employing based on EPGA and CamerarLink interface is responsible for high speed image data Bian collection.And use DSP to process image, and directly extract the characteristic information of image, greatly reduced to the data volume of host computer transmission, avoid transfer of data to take a large amount of cpu resources and make system response slack-off.
Claims (2)
1. two Laser Slabs shape checkout gears of symmetrical expression, by portal frame, backing roll, working roll, LDV, Matrix C MOS camera, rotatable line laser transmitter and computer form, it is characterized in that: at the sheet material entrance of checkout gear, be provided with a pair of backing roll and a pair of working roll, a pair of working roll is arranged in a pair of backing roll, portal frame is along being provided with LDV on sheet material direct of travel, Matrix C MOS camera, wherein for the LDV of the speed of service of drafting board material, be contained in a side of portal frame, this side is the sheet material entrance of checkout gear, for the Matrix C MOS camera of sheet material IMAQ, be positioned at the opposite side of portal frame, two symmetrical rotatable line laser transmitter of laying are arranged on Matrix C MOS camera below, and outside the shooting area of Matrix C MOS camera, wherein the laser incident angle of rotatable line laser transmitter regulates by rotary chuck, its adjustable range is 15 °～30 °, and the input that the output of LDV and Matrix C MOS camera connects computer, rotatable line laser transmitter connects computer.
2. two Laser Slabs shape checkout gears of symmetrical expression according to claim 1, is characterized in that: described Matrix C MOS camera, its camera lens adopts that Nikon50mm focuses, light is adjustable camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187035.6U CN203830424U (en) | 2014-04-17 | 2014-04-17 | Symmetric double-laser plate shape detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187035.6U CN203830424U (en) | 2014-04-17 | 2014-04-17 | Symmetric double-laser plate shape detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203830424U true CN203830424U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420187035.6U Expired - Fee Related CN203830424U (en) | 2014-04-17 | 2014-04-17 | Symmetric double-laser plate shape detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203830424U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517646A (en) * | 2020-11-17 | 2021-03-19 | 娄底市洪申科技有限公司 | Steel plate online flatness detection device and detection method thereof |
| CN113819841A (en) * | 2021-08-27 | 2021-12-21 | 西安理工大学 | Machine vision-based plate shape detection device and detection method thereof |
| US11703315B2 (en) | 2019-09-20 | 2023-07-18 | Nordson Corporation | Laser interferometry systems and methods |
-
2014
- 2014-04-17 CN CN201420187035.6U patent/CN203830424U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11703315B2 (en) | 2019-09-20 | 2023-07-18 | Nordson Corporation | Laser interferometry systems and methods |
| CN112517646A (en) * | 2020-11-17 | 2021-03-19 | 娄底市洪申科技有限公司 | Steel plate online flatness detection device and detection method thereof |
| CN113819841A (en) * | 2021-08-27 | 2021-12-21 | 西安理工大学 | Machine vision-based plate shape detection device and detection method thereof |
| CN113819841B (en) * | 2021-08-27 | 2023-10-27 | 西安理工大学 | Plate shape detection device based on machine vision and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150417 |
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| EXPY | Termination of patent right or utility model |