CN101750022B - Sintering layer thickness on-line detecting method - Google Patents
Sintering layer thickness on-line detecting method Download PDFInfo
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- CN101750022B CN101750022B CN 200810229765 CN200810229765A CN101750022B CN 101750022 B CN101750022 B CN 101750022B CN 200810229765 CN200810229765 CN 200810229765 CN 200810229765 A CN200810229765 A CN 200810229765A CN 101750022 B CN101750022 B CN 101750022B
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Abstract
The present invention discloses a sintering layer thickness on-line detecting method. Two point light sources are arranged at the upper side of a trolley of a sintering machine to enable a flat surface formed by the light rays of the two point light sources vertical to the wall and the bottom of the trolley. In the vertical flat surface, two light rays are gathered on one point of the bottom of the trolley; one of the two light rays is vertical to the bottom of the trolley, and the other one forms an acute angle a wit the bottom of the trolley. Image collecting equipment is arranged above the trolley to enable an image collecting range bigger than the lighting range of the two point light source on a charge level. Light point distance Lp of the two point light sources projected on the charge level by the image collecting equipment is collected in a computer, images are processed, and the material layer thickness is calculated by a formula H = tga*Li*g. The present invention solves the problems of equipment loss, large maintaining volume and the like caused by touching measurement, can be suitable to the bed environment of sintering production, and has the advantages of low equipment cost, small volume, easy arrangement, reliable work, convenient use and the like.
Description
Technical field
The present invention relates to a kind of computer picture that utilizes and detect and the online test method of processing, especially to sintering machine pre-coated layer thickness on-line detecting method.
Background technology
Thickness of feed layer is a key operation parameter in the SINTERING PRODUCTION, also is the important indicator of examination sintering machine intermediary operation, and thickness of feed layer and stability thereof directly affect the Yield and quality of sintering deposit.Realize the online detection of chassis thickness of feed layer, can understand early the bed of material and change, provide reference for regulating layer thickness, sintering machine machine speed, bellows air door, ignition operation and sintering end point control etc.
At present the measuring method of batch layer thickness of sintering machine mainly contained floating-board type, Weight type, ultrasonic type etc.Because SINTERING PRODUCTION scene temperature height, high humidity, dust are many, environment is abominable, especially existing various detection methods all need its probe, installation of sensors directly over sintering machine, and close together so then causes sensor to be subject to mechanical collision and high temperature and damages.
The utility model of Sintering Bed Depth Instrument (number of patent application 03234293.4): comprise that gage beam, runner and signal measurement apparatus form, contact with charge level by gage beam and drive the runner rotation, rotate radian according to runner and calculate the charge level height.This method and is vulnerable to mechanical collision and damages because wearing and tearing and the corrosion meeting of gage beam impacts measurement result; The utility model of Integral ultrasonic level-sensing device (number of patent application 200420060206.5): be to utilize ultrasound wave on charge level, can reflect, can calculate the charge level height by the mistiming of emission and the signal that reclaims.But this method is higher to environment and measured object structural requirement, can not adapt to preferably the rugged surroundings at sintering scene, and equipment is fragile; The utility model of weight dropper charge level indicator (number of patent application 200520093892.0): brake when arriving charge level by weight, pulling force diminishes, and produces signal, determines the charge level height according to the weight falling head.This method is because the wearing and tearing of weight and corrosion also can impact measurement result, and the same a kind of invention equally has more mechanical part, damages than being easier to, and maintenance is larger.
Summary of the invention
The object of the present invention is to provide and a kind ofly can adapt to SINTERING PRODUCTION rugged surroundings, fragile, not contactless sintering layer thickness on-line detecting method.
The object of the present invention is achieved like this, a kind of sintering layer thickness on-line detecting method, two pointolites are set above sintering pallet, make the light formed plane while of two pointolites perpendicular to car wall and the bottom of chassis, in this vertical plane, article two, light converges on the pallet bottom a bit, and wherein a light is vertical with pallet bottom, and another light and pallet bottom acutangulate α; An image capture device is set above chassis, makes the scope of image acquisition greater than the range of exposures of two pointolites on charge level, two pointolites are throwed the distance L of luminous point at charge level by image capture device
pCollect in the computing machine, and image is processed, utilize at last formula H=tg α * L
i* g calculates thickness of feed layer,
In the formula, H is tested thickness of feed layer;
α is the angle of a light and pallet bottom;
L
iFor image capture device collects point-to-point transmission pixel value shown in the computing machine with two pointolites in the distance of charge level projection luminous point;
G is the equipment coefficient, g=L
p/ L
i
Wherein: L
pDistance for actual measurement projection luminous point.
A kind of sintering layer thickness on-line detecting method of the present invention, a pointolite can be arranged on chassis one sidecar wall directly over, and perpendicular to pallet bottom, another pointolite and image capture device are arranged on the top, the outside of another car wall of chassis.In order to make the detection better effects if, also can be with the axis of image capture device and two formed planes of pointolite axis in same plane.
The air line distance that the present invention utilizes two pointolites to form two reflection light points on the charge level surface changes with thickness of feed layer, and the axis of two pointolites and the thick-and-thin rule of the angle between charge level, by image capture device two reflection light points that form on the charge level are collected and to carry out image in the computing machine and process, detect the air line distance of two reflection light points, utilize at last the trigonometric function formula to calculate actual thickness of feed layer.
This method is compared with prior art, has following beneficial effect:
1, non-contact measurement is avoided the equipment consume; 2, machinery-free composition reduces maintenance cost; 3, adapt to site environment, reliable operation, not fragile; 4, equipment cost is low, and volume is little, is easy to install; 5, principle is easy, is easy to realize.
Description of drawings
Fig. 1 is the sintering pallet sectional schematic diagram;
Fig. 2 is the video camera shooting picture of seeing in the display.
Embodiment
As shown in Figure 1, 2, a kind of sintering layer thickness on-line detecting method of the present invention, two pointolite 3-1,3-2 are set above sintering pallet, make the light formed plane while of two pointolites perpendicular to car wall 5-1,5-2 and the bottom 1 of chassis, in this vertical plane, article two, light converges on the pallet bottom a bit, and wherein a light is vertical with pallet bottom, and another light and pallet bottom acutangulate α; An image capture device 4 is set above chassis, makes the scope of image acquisition greater than the range of exposures of two pointolites on charge level, by image capture device with the distance L of two pointolites at charge level 2 projection luminous points
pCollect in the computing machine, and image is processed, utilize at last formula H=tg α * L
i* g calculates thickness of feed layer,
In the formula, H is tested thickness of feed layer;
α is the angle of a light and pallet bottom;
L
iFor image capture device collects point-to-point transmission pixel value shown in the computing machine with two pointolites in the distance of charge level projection luminous point;
G is the equipment coefficient, g=L
p/ L
i
Wherein: L
pDistance for actual measurement projection luminous point.
As shown in Figure 1, pointolite 3-1 is directly over chassis wall 5-1, and perpendicular to pallet bottom 1, pointolite 3-2 and image capture device 4 are above the outside of chassis wall 5-2,1 one-tenth α angle of pointolite 3-2 and pallet bottom, the light source point of pointolite 3-1,3-2 emission converges in the C point on the intersection of sky pallet bottom 1 and chassis wall 5-1, and pointolite 3-1,3-2 plane of living in is vertical with the chassis traffic direction.
As shown in Figure 1, during the chassis cloth, pointolite 3-1,3-2 form projection luminous point A, B at cloth charge level 2,2 line is perpendicular to chassis wall 5-1,5-2, image capture device 4 is installed in the position that can collect simultaneously projection luminous point A, B, position and the angle of point of fixity light source 3-1,3-2 and image capture device 4.Utilize the projection luminous point A, the B that form on 4 pairs of chassis clothes of image capture device charge level to carry out image acquisition, then show on computers, Fig. 2 is the synoptic diagram of the demonstration of image on graphoscope that collect of image capture device 4, point D, E are corresponding with projection luminous point A, B among Fig. 1 respectively, L
iFor the distance between D, the E (point-to-point transmission pixel value on the image), utilize H=tg α * L
i* g calculates the actual (real) thickness H of the bed of material.
The demarcation of equipment coefficient g: chassis is not during cloth, pointolite 3-1,3-2 converge at the C point at the intersection of pallet bottom 1 and chassis wall 5-1, when chassis was furnished with the certain thickness material, pointolite 3-1,3-2 formed projection luminous point A, B at the cloth charge level, and the distance of actual measurement projection luminous point is L
p, the distance with projection luminous point A, some D, E that B is corresponding that shows on the computing machine is L
i, then equipment coefficient g is g=L
p/ L
iH=tg α * L
iThe derivation of * g: can obtain the actual (real) thickness H of the bed of material and the actual range L that two pointolites are transmitted into the formed projection luminous point in charge level surface from Fig. 1
pBetween the pass be H=tg α * L
p, and g=L
p/ L
i, so H=tg α * L
i* g.
Claims (5)
1. sintering layer thickness on-line detecting method, it is characterized in that: two pointolites are set above sintering pallet, make the light formed plane while of two pointolites perpendicular to car wall and the bottom of chassis, in this vertical plane, article two, light converges on the pallet bottom a bit, wherein a light is vertical with pallet bottom, and another light and pallet bottom acutangulate α; An image capture device is set above chassis, makes the scope of image acquisition greater than the range of exposures of two pointolites on charge level, two pointolites are throwed the distance L of luminous point at charge level by image capture device
pCollect in the computing machine, and image is processed, utilize at last formula H=tg α * L
i* g calculates thickness of feed layer,
In the formula, H is tested thickness of feed layer;
α is the angle of a light and pallet bottom;
L
iFor image capture device collects point-to-point transmission pixel value shown in the computing machine with two pointolites in the distance of charge level projection luminous point;
G is the equipment coefficient, g=L
p/ L
i
Wherein: L
pDistance for actual measurement projection luminous point.
2. a kind of sintering layer thickness on-line detecting method according to claim 1, it is characterized in that: a pointolite (3-1) be arranged on chassis one sidecar wall (5-1) directly over, and perpendicular to pallet bottom (1), another pointolite (3-2) and image capture device (4) are arranged on the top, the outside of another car wall (5-2) of chassis.
3. a kind of sintering layer thickness on-line detecting method according to claim 1, it is characterized in that: the axis of image capture device (4) and two formed planes of pointolite axis are in same plane.
4. a kind of sintering layer thickness on-line detecting method according to claim 1, it is characterized in that: image capture device (4) Real-time Collection is incident upon formed image on the charge level by pointolite.
5. a kind of sintering layer thickness on-line detecting method according to claim 1 is characterized in that: computing machine carries out denoising, binaryzation and the value of light spot position pixel count to the image that gathers to be processed.
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CN108713128A (en) * | 2016-03-16 | 2018-10-26 | 海克斯康测量技术有限公司 | Probe clip for coordinate measuring machine |
CN106289093B (en) * | 2016-11-15 | 2019-01-11 | 成都先进金属材料产业技术研究院有限公司 | Metallurgical equipment lining cutting depth of erosion device for fast detecting and method |
CN106352831B (en) * | 2016-11-15 | 2019-06-04 | 攀钢集团攀枝花钢铁研究院有限公司 | The device and method of metallurgical equipment lining cutting depth of erosion detection |
CN107014295B (en) * | 2017-05-31 | 2023-11-24 | 顺丰科技有限公司 | Volume measuring device, use method and conveying device with volume measuring function |
CN109855548A (en) * | 2019-01-30 | 2019-06-07 | 中南大学 | Analyze the method and system of the red flame layer thickness of sintering cup test |
CN110567345A (en) * | 2019-09-04 | 2019-12-13 | 北京信息科技大学 | Non-contact type pipe wall thickness measuring method and system based on machine vision |
CN113739709A (en) * | 2021-09-08 | 2021-12-03 | 中冶长天国际工程有限责任公司 | Online detection method and online detection system for thickness of sintering material layer |
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