CN109190618A - High-temperature slag flow measurement device and method based on image recognition technology - Google Patents
High-temperature slag flow measurement device and method based on image recognition technology Download PDFInfo
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- CN109190618A CN109190618A CN201810940966.1A CN201810940966A CN109190618A CN 109190618 A CN109190618 A CN 109190618A CN 201810940966 A CN201810940966 A CN 201810940966A CN 109190618 A CN109190618 A CN 109190618A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/56—Extraction of image or video features relating to colour
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
Abstract
The invention discloses high-temperature slag flow measurement devices and method based on image recognition technology；A kind of high-temperature slag flow measurement device based on image recognition technology, including intermediate buffer device and granulation warehouse；Slag in intermediate buffer device flows to granulator by slag notch, and high-temperature slag fluid column is formed between slag notch and granulator；It is characterized by: high-speed camera is arranged in granulation warehouse, the camera of the high-speed camera is corresponding with high-temperature slag fluid column；It is disposed with water cooling valve jacket outside high-speed camera, the cooling water in water cooling valve jacket is driven by water circulating pump；High-speed camera is by data line by high-temperature slag fluid column image transmitting to computer；Fluid column limb recognition module, fluid column diameter calculation module, color threshold segmentation module, characteristic point position identification module, characteristic point speed calculation module and flow rate calculation module are provided in computer；The present invention can be widely used in the fields such as steel, metallurgy the measurement for carrying out high-temperature fusion fluid flow.
Description
Technical field
The present invention relates to high-temperature slag flow measurement device and methods, and in particular to the high temperature melting based on image recognition technology
Slag flow measurement device and method.
Background technique
Blast furnace ironmaking process generates a large amount of high-temperature slags, and common water quenching handles it at present, obtained high glass
The slag granules of body content can be used as cement additive, but this method produces huge energy waste, and generates water resource waste, ring
A series of problems, such as border is polluted.
For many drawbacks for solving high temperature furnace slag Water Quenching method, a variety of high-temperature slag dry treatment methods come into being.
Common high-temperature slag dry treatment method has rotary drum method, wind quenching shotting, centrifugal mixer method etc..Slag centrifugal granulation waste heat returns
Receipts technology is one of high-temperature slag dry treatment method of most prospect.Its main process is: by the high temperature of blast furnace interval discharge
Blast furnace slag enters in intermediate buffer device, due to gravity, is flowed continually out by intermediate buffer device lower end slag notch, and
High-temperature slag fluid column is formed, high-speed rotating granulator is flow to, sprawls, be granulated under the centrifugal action of granulator etc. and is capable
For.Molten slag is granulated resulting slag particle and flies out from granulator edge, falls after hitting granulation warehouse, later use moving bed or
The modes such as fluidized bed recycle the waste heat of slag particle.For cooling slag particle, cement filler can be made using it, realize recycling
It utilizes.
Slag centrifugal granulation heat recovery technology has the advantages such as compact-sized, energy consumption is low, the particle diameter of formation is small, obtains
To extensive concern both domestic and external.
However, slag centrifugal granulation heat recovery technology needs to keep slag stability of flow, the unstable of flow is easy to make
At serious consequences such as particle bonding, big, the waste heat recovery efficiency reductions of slag wool yield.But due at present can not be to high-temperature slag stream
Amount measures, and then can not regulate and control to flow.
Summary of the invention
Technical problem to be solved by the present invention lies in the high-temperature slag flow measurement provided based on image recognition technology dresses
It sets and method.
In order to solve the above-mentioned technical problem, first technical solution of the invention is: a kind of based on image recognition technology
High-temperature slag flow measurement device, including intermediate buffer device and granulation warehouse；Be provided with granulator in granulation warehouse, it is described in
Between buffer storage lower end be arranged slag notch, the slag notch is corresponding with granulator, the slag in intermediate buffer device by out
Cinder notch flows to granulator, and high-temperature slag fluid column is formed between slag notch and granulator；It is characterized by: in granulation warehouse
It is inside provided with high-speed camera, the camera of the high-speed camera is corresponding with high-temperature slag fluid column；To shoot high-temperature slag fluid column
Image；It is higher to be granulated storehouse body temperature, to protect high-speed camera, water cooling valve jacket, the water are disposed with outside the high-speed camera
Cooling water in cold valve jacket is driven by water circulating pump.
The high-speed camera is by data line by high-temperature slag fluid column image transmitting to computer.
Be provided in the computer fluid column limb recognition module, fluid column diameter calculation module, color threshold segmentation module,
Characteristic point position identification module, characteristic point speed calculation module and flow rate calculation module.
The fluid column limb recognition module is for knowing high-temperature slag fluid column image border using limb recognition function
Not.
The fluid column diameter calculation module, which is used to choose a horizontal plane in high-temperature slag liquid-column height direction, is characterized section,
The horizontal distance at the two slag fluid column edges highly located where characteristic cross-section is slag fluid column diameter.
Color threshold segmentation module is used for according to the correlation function of color threshold segmentation, using characteristic cross-section adjacent area as
Area-of-interest, then the rgb value range of given characteristic point, are carried out color threshold segmentation, are met in area-of-interest with color
The point of the rgb value range is as characteristic point.
Characteristic point position identification module obtains the same characteristic point in each frame image for being identified frame by frame to characteristic point
On coordinate.
Characteristic point speed calculation module is used to calculate the movement speed of characteristic point according to frame difference method；The shifting of the characteristic point
Dynamic speed is the flowing velocity of fluid column.
Flow rate calculation module is used to calculate the stream of slag fluid column according to the fluid column diameter and flowing velocity at characteristic cross-section
Amount.
The preferred embodiment of high-temperature slag flow measurement device according to the present invention based on image recognition technology, it is described
Data line is wrapped up by temperature-resistant material.
Second technical solution of the invention is: a kind of high-temperature slag flow-measuring method based on image recognition technology,
It is characterized by comprising following steps:
The image that shooting obtains high-temperature slag fluid column is carried out to high-temperature slag fluid column by high-speed camera.
Image border is identified using limb recognition function.
A horizontal plane, which is chosen, in picture altitude direction is characterized section, two highly located where characteristic cross-section slag liquid
The horizontal distance at column edge is slag fluid column diameter.
Using characteristic cross-section adjacent area as area-of-interest, then the rgb value range of given characteristic point, according to color threshold
The correlation function of segmentation carries out color threshold segmentation, meets the point of the rgb value range using color in area-of-interest as special
Sign point.
Characteristic point is identified frame by frame, obtains coordinate of the same characteristic point on each frame image.
According to frame difference method, the movement speed of characteristic point is calculated；The movement speed of the characteristic point is the flowing speed of fluid column
Degree.
According to the fluid column diameter and flowing velocity at characteristic cross-section, the flow of slag fluid column is calculated.
The present invention enters the high temperature blast furnace slag of blast furnace interval discharge in intermediate buffer device, due to gravity, by
Intermediate buffer device lower end slag notch, which flows continually out, flow to granulator, and forms high-temperature slag fluid column, utilizes slag fluid column temperature
It is high, the feature of strong light can be emitted to surrounding, the low time for exposure mode of high frame per second is set by high-speed camera, it is clapped
It takes the photograph.Simultaneously as slag fluid column corrosivity is strong, part can be flowed through to it and corroded, so that special containing a small amount of impurity in fluid column
Particle is levied, since the luminous frequency of different material is different, impurity characteristics particle presents different from slag mainstream fluid column in flowing
Color.According to this characteristic, the low time for exposure shooting of high frame per second is carried out to slag fluid column using high-speed camera, and utilize image
Identification technology identifies impurity characteristics particle, and analysing impurity characteristic particle present position, calculates flow stream velocity with this frame by frame；Meanwhile
Under conditions of the low time for exposure, ater is presented in background, and shiny red is presented in fluid column, identifies slag liquid using image recognition technology
The edge contour of column obtains fluid column diameter.According to speed and diameter information, it can be achieved that real-time detection to high-temperature slag flow.
The beneficial effect of high-temperature slag flow measurement device of the present invention based on image recognition technology and method is:
The present invention shoots slag fluid column using high-speed camera, and utilize image recognition technology, identification impurity characteristics particle and
The edge contour of slag fluid column realizes the measurement of high-temperature slag flow in centrifugal granulation system, is high-temperature slag flow control
It provides the foundation；The present invention also provides feasible program to shoot under hot environment in granulation storehouse using high-speed camera；This hair
It is bright to can be widely used in the fields such as steel, metallurgy the flow measurement for carrying out high-temperature fusion fluid.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the high-temperature slag flow measurement device based on image recognition technology of the present invention
Figure.
Fig. 2 is a kind of high-temperature slag flow-measuring method flow diagram based on image recognition technology.
Fig. 3 is the photo figure of the simulation slag flowing shot using high-speed camera.
Specific embodiment
Embodiment 1: referring to Fig. 1 and Fig. 2, a kind of high-temperature slag flow measurement device based on image recognition technology, including
Intermediate buffer device 1 and granulation warehouse 11；Granulator 4, the setting of intermediate buffer device lower end are provided in granulation warehouse 11
Slag notch 2, the slag notch 2 is corresponding with granulator 4, and the slag in intermediate buffer device 1 flows to granulation by slag notch 2
Device 4, and high-temperature slag fluid column 3 is formed between slag notch 2 and granulator 4；High-speed camera is provided in granulation warehouse 11
6, the camera of the high-speed camera 6 is corresponding with high-temperature slag fluid column 3；To shoot 3 image of high-temperature slag fluid column；It is granulated in warehouse
Temperature is higher, to protect high-speed camera 6, is disposed with water cooling valve jacket 5 outside the high-speed camera 6, cold in the water cooling valve jacket 5
But water carries out circulation driving by water pipe 7 by water circulating pump 8.
The high-speed camera 6 is by data line 9 by 3 image transmitting of high-temperature slag fluid column to computer 10；It is described
Data line 9 is wrapped up by temperature-resistant material.
Fluid column limb recognition module, fluid column diameter calculation module, color threshold segmentation mould are provided in the computer 10
Block, characteristic point position identification module, characteristic point speed calculation module and flow rate calculation module.
The fluid column limb recognition module is for knowing 3 image border of high-temperature slag fluid column using limb recognition function
Not.
The fluid column diameter calculation module, which is used to choose a horizontal plane in high-temperature slag liquid-column height direction, is characterized section,
The horizontal distance at the two slag fluid column edges highly located where characteristic cross-section is slag fluid column diameter.
Color threshold segmentation module is used for according to the correlation function of color threshold segmentation, using characteristic cross-section adjacent area as
Area-of-interest, then the rgb value range of given characteristic point, are carried out color threshold segmentation, are met in area-of-interest with color
The point of the rgb value range is as characteristic point.
Characteristic point position identification module obtains the same characteristic point in each frame image for being identified frame by frame to characteristic point
On coordinate.
Characteristic point speed calculation module is used to calculate the movement speed of characteristic point according to frame difference method；The shifting of the characteristic point
Dynamic speed is the flowing velocity of fluid column.
Flow rate calculation module is used to calculate the stream of slag fluid column according to the fluid column diameter and flowing velocity at characteristic cross-section
Amount.Resulting data on flows is shown on a computer display.
Embodiment 2, a kind of high-temperature slag flow-measuring method based on image recognition technology of referring to fig. 2, including walk as follows
It is rapid:
The image that shooting obtains high-temperature slag fluid column 3 is carried out to high-temperature slag fluid column 3 by high-speed camera 6；
Image border is identified using limb recognition function.
A horizontal plane, which is chosen, in picture altitude direction is characterized section, two highly located where characteristic cross-section slag liquid
The horizontal distance at column edge is slag fluid column diameter.
Using characteristic cross-section adjacent area as area-of-interest, then the rgb value range of given characteristic point, according to color threshold
The correlation function of segmentation carries out color threshold segmentation, meets the point of the rgb value range using color in area-of-interest as special
Sign point.
Characteristic point is identified frame by frame, obtains coordinate of the same characteristic point on each frame image.
According to frame difference method, the movement speed of characteristic point is calculated；The movement speed of the characteristic point is the flowing speed of fluid column
Degree.
According to the fluid column diameter and flowing velocity at characteristic cross-section, the flow of slag fluid column is calculated.
Referring to Fig. 3, Fig. 3 is the photo figure of the simulation slag flowing shot using high-speed camera, the short transverse in figure
It chooses a horizontal plane and is characterized section, using limb recognition function, edge and environment, meter are identified by given threshold grey scale value
The horizontal distance for calculating two slag fluid column edges for obtaining highly locating where characteristic cross-section is slag fluid column diameter；It gives again
The rgb value range of characteristic point, using Threshold segmentation function, the point for meeting the rgb value range using color obtains frame by frame as characteristic point
Characteristic point coordinate is taken, its movement speed is calculated, obtains the flow velocity of fluid column；Using diameter and flow velocity as calculation basis, flow is calculated.Benefit
With this method, error is less than 5%.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (3)
1. a kind of high-temperature slag flow measurement device based on image recognition technology, including intermediate buffer device (1) and granulation storehouse
Body (11)；Granulation warehouse (11) in is provided with granulator (4), intermediate buffer device lower end be arranged slag notch (2), it is described go out
Cinder notch (2) is corresponding with granulator (4), and the slag in intermediate buffer device (1) flows to granulator (4) by slag notch (2),
And high-temperature slag fluid column (3) are formed between slag notch (2) and granulator (4)；It is characterized by: being set in granulation warehouse (11)
High-speed camera (6) are equipped with, the camera of the high-speed camera (6) is corresponding with high-temperature slag fluid column (3)；To shoot high-temperature slag
Fluid column (3) image；It is disposed with water cooling valve jacket (5) outside the high-speed camera (6), the cooling water in the water cooling valve jacket (5) is by following
Ring water pump (8) driving；
The high-speed camera (6) gives high-temperature slag fluid column (3) image transmitting to computer (10) by data line (9)；
Be provided in the computer (10) fluid column limb recognition module, fluid column diameter calculation module, color threshold segmentation module,
Characteristic point position identification module, characteristic point speed calculation module and flow rate calculation module；
The fluid column limb recognition module is for knowing high-temperature slag fluid column (3) image border using limb recognition function
Not；
The fluid column diameter calculation module, which is used to choose a horizontal plane in high-temperature slag liquid-column height direction, is characterized section, in spy
The horizontal distance at two slag fluid column edges where levying section at height is slag fluid column diameter；
The color threshold segmentation module is used for according to the correlation function of color threshold segmentation, using characteristic cross-section adjacent area as
Area-of-interest, then the rgb value range of given characteristic point, are carried out color threshold segmentation, are met in area-of-interest with color
The point of the rgb value range is as characteristic point；
The characteristic point position identification module obtains the same characteristic point in each frame image for being identified frame by frame to characteristic point
On coordinate；
The characteristic point speed calculation module is used to calculate the movement speed of characteristic point according to frame difference method；The shifting of the characteristic point
Dynamic speed is the flowing velocity of fluid column；
The flow rate calculation module is used to calculate the stream of slag fluid column according to the fluid column diameter and flowing velocity at characteristic cross-section
Amount.
2. the high-temperature slag flow measurement device according to claim 1 based on image recognition technology, it is characterised in that: number
It is wrapped up according to transmission line (9) by temperature-resistant material.
3. a kind of high-temperature slag flow-measuring method based on image recognition technology, characterized by the following steps:
The image that shooting obtains high-temperature slag fluid column (3) is carried out to high-temperature slag fluid column (3) by high-speed camera (6)；
Image border is identified using limb recognition function；
A horizontal plane, which is chosen, in picture altitude direction is characterized section, two highly located where characteristic cross-section slag fluid column side
The horizontal distance of edge is slag fluid column diameter；
Using characteristic cross-section adjacent area as area-of-interest, then the rgb value range of given characteristic point, according to color threshold segmentation
Correlation function, carry out color threshold segmentation, meet the point of the rgb value range using color in area-of-interest as feature
Point；
Characteristic point is identified frame by frame, obtains coordinate of the same characteristic point on each frame image；
According to frame difference method, the movement speed of characteristic point is calculated；The movement speed of the characteristic point is the flowing velocity of fluid column；
According to the fluid column diameter and flowing velocity at characteristic cross-section, the flow of slag fluid column is calculated.
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Cited By (1)
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| CN110305997A (en) * | 2019-07-30 | 2019-10-08 | 青岛大学 | A kind of molten slag granulating device with slag particle diameter monitoring function |
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