CN110487415A - Molten metal fluid volume data detection device, method and system - Google Patents
Molten metal fluid volume data detection device, method and system Download PDFInfo
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- CN110487415A CN110487415A CN201910763242.9A CN201910763242A CN110487415A CN 110487415 A CN110487415 A CN 110487415A CN 201910763242 A CN201910763242 A CN 201910763242A CN 110487415 A CN110487415 A CN 110487415A
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Classifications
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
- G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
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- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
- G01J5/485—Temperature profile
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J5/80—Calibration
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- G—PHYSICS
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The present invention relates to metallurgical detection technique fields, a kind of molten metal fluid volume data detection device, method and system are disclosed, with on-line synchronous detection and the space temperature and velocity profile information of compatible different industries high-temperature molten metal fluid, the volume data of high-temperature molten metal fluid is obtained.Apparatus of the present invention include: the first functional unit, for obtaining molten metal fluid synchronous thermal-induced imagery and visible light video；Second functional unit carries out the temperature that molten metal fluid is calculated to the molten metal fluid in localization region for carrying out the zone location of molten metal fluid in the thermal-induced imagery；Third functional unit, for decompositing frame image from the visible light video, the velocity field in camera coordinates system of molten metal fluid is obtained according to the characteristics of image of the molten metal fluid of extraction, and the velocity field under the camera coordinates system is converted into the velocity field in world coordinate system and calculates the flow velocity of molten metal fluid.
Description
Technical field
The present invention relates to metallurgical detection technique field more particularly to a kind of molten metal fluid volume data detection devices, side
Method and system.
Background technique
In metallurgy industry, most metal is generated by smelting in high temperature reaction stove.By being reacted in high-temperature closed
The raw materials such as investment metallic ore, coke, form high-temperature molten metal stream after complex redox reaction in cupola well in furnace
Body, including molten iron, molten aluminum, copper water etc..When molten metal solutions reach a certain amount of in reacting furnace, it can be flowed out from outflow port high speed.
The multiclass Heterogeneous Spatial Information such as temperature, flow velocity of molten metal fluid reflect molten metal quality, reaction in-furnace temperature and
The operation conditions such as pressure, be regulate and control molten metal mass, calculate reacting furnace block up the time, monitoring outflow port state of wear it is important
Parameter foundation is to ensure that molten metal meets the key of subsequent product specification, Improving The Quality of Products and the factor of merit.Therefore, it melts
The online accurate detection of metal fluid status information is most important for smelting process.
Since molten metal has the characteristics that temperature is high, flow velocity is fast, corrosivity is strong, surface easily forms oxide layer and slagging,
Cause the status information of molten metal fluid to be difficult to real-time online to accurately measure.The infomation detection master of existing molten metal fluid
The detection for concentrating on single piece of information, online complete detection molten metal fluid multiclass Heterogeneous Spatial Information can be synchronized by lacking
Device.
Whether the detection for high-temperature molten metal fluid temperature (F.T.) contacts with tested melt flow stream according to detection device, can
Existing detection device is divided into contact-type detection and contactless detection device.Contact device includes thermocouple, black
Body cavity etc., contactless device include infrared radiation thermometer and thermal infrared imager etc..When using thermocouple temperature measurement, since melting is flowed
Temperature is very high, and each thermometric can all consume a thermocouple, and since operator's needs are close to high-temperature fusion gold when thermometric
Belong to fluid, faces certain danger.Blackbody cavity device is easy due to needing directly to contact with high-temperature molten metal fluid by height
The erosion of warm molten metal fluid, service life are limited.Infrared radiation thermometer can obtain the point source temperature of molten metal fluid online
Degree, thermal infrared imager can obtain the face source temperature of molten metal fluid online, but due to high-temperature molten metal fluid flow rate
Comparatively fast, and there are many kinds of substance such as oxide layer, slag on its surface, cause the precision of infrared measurement of temperature result poor.
The detection device of existing high-temperature molten metal fluid flow rate is broadly divided into contact and contactless detection device two
Kind, contact flow monitor is directly contacted using heat-resisting material with high-temperature fusion fluid, and measurable data are generated
Achieve the purpose that real-time detection high-temperature fusion fluid flow rate, however swiftly flowing high temperature fluid can gradually wear out erosion high temperature resistant
Material causes device poor repeatability, service life short, moreover, equally can under a large amount of dust and the adverse circumstances of high temperature
The service life and service performance for influencing device, lead to that cost of investment is high, accuracy in detection is low so that contact-type detection by
Biggish limitation is arrived；Contactless flow monitor is then the infrared figure that melt flow stream is obtained by device non-intrusion type
Picture carries out signature tracking using the feature of image intensity, but in reacting furnace goes out stream scene there are a large amount of dust can cause image
The variation of intensity, to seriously affect the accuracy of flow rate detection.
In metallurgical process high quality development, new demand is proposed to the detection of metallurgical process, it is desired to be able to describe
Complex relationship between multiclass Heterogeneous Spatial Information, it more desirable to obtain these multiclass Heterogeneous Spatial Informations online.For full scale image
Ground describes the multiclass Heterogeneous Spatial Information such as the temperature of high-temperature molten metal fluid, flow velocity, and the present invention proposes molten metal fluid body
The structural data that the multiclass such as temperature, flow velocity Heterogeneous Spatial Information and its coupled relation are constituted is defined as body by the concept of data
Data, its minimum constituent unit are the voxels with space geometry attribute, temperature field and stream such as high-temperature molten metal fluid
Fast field etc..
CN104748793A discloses a kind of aluminum electrolysis cell melt temperature and flow velocity combined in real time measuring device and its measurement side
Method, the temperature flow speed real-time measurement device of the patent include distributed measurement pop one's head in transparency protected device, infrared detection sensor,
Subscriber Interface Module SIM and temperature and speed measurement module.Device need to be immersed in aluminium cell in melt when detection, by red
Outer detection sensor obtains the infrared image of melt, and temperature detecting module detects 950 DEG C or so using color comparison temperature measurement method
Aluminium cell is calculated according to the processing result of different moments infrared image in melt in aluminium cell, flow rate detection module
The flow velocity of interior melt.
But above-mentioned patent is just for the melt of single physical property, and when physical property is different in molten metal, temperature-measuring results will
In the presence of very large deviation.The patent regards melt flows in aluminium cell as simple rigid body movement, ignores the fortune of internal fluid
It is dynamic, in addition the influence of random noise is difficult to find that region identical with characteristic area on the image, leads to this after time t
The flow rate detection effect of patent is poor.In addition, the patent belongs to contact-type detection, it is easy to be worn, service life has
Limit.
CN 201251439Y discloses a kind of flow velocity temperature measuring device of water depth.The patent specifically discloses a kind of measurement
The depth of water, flow velocity, temperature vertical continuous measuring device, the device is by instrument box, motor-driven mechanism, straight-line motion mechanism and survey
The compositions such as measuring mechanism are, it can be achieved that the water velocity of different depth and the continuous precise measurement of temperature.But the patent belongs to contact
Detection device, and be intended for low temperature water flow, be easy to be damaged when detecting high-temperature fusion fluid.And the temperature of the patent
The core sensors such as sensor, flow sensor are difficult to be suitable for high-temperature fusion fluid.
Summary of the invention
Present invention aims at a kind of molten metal fluid volume data detection device, method and system is disclosed, with online same
The space temperature and velocity profile information of step detection and compatible different industries high-temperature molten metal fluid, obtain high-temperature molten metal
The volume data of fluid.
In order to achieve the above object, the present invention discloses a kind of molten metal fluid volume data detection method, comprising:
Obtain molten metal fluid synchronous thermal-induced imagery and visible light video；
The zone location that molten metal fluid is carried out in the thermal-induced imagery, to the motlten metal stream in localization region
Body carries out the temperature that molten metal fluid is calculated；
Frame image is decomposited from the visible light video, is obtained according to the characteristics of image of the molten metal fluid of extraction molten
Melt the velocity field in camera coordinates system of metal fluid, and the velocity field under the camera coordinates system is converted into world coordinates
Velocity field in system and the flow velocity for calculating molten metal fluid；
The synchronous temperature of obtained molten metal fluid and flow velocity are associated in molten metal fluid volume data.
In order to achieve the above object, invention additionally discloses a kind of molten metal fluid volume data detection devices, comprising:
First functional unit, for obtaining molten metal fluid synchronous thermal-induced imagery and visible light video；
Second functional unit, for carrying out the zone location of molten metal fluid in the thermal-induced imagery, to positioning
Molten metal fluid in region carries out the temperature that molten metal fluid is calculated；
Third functional unit, for decompositing frame image from the visible light video, according to the motlten metal stream of extraction
The characteristics of image of body obtains the velocity field in camera coordinates system of molten metal fluid, and by the stream under the camera coordinates system
Fast field is converted to the velocity field in world coordinate system and calculates the flow velocity of molten metal fluid.
Preferably, apparatus of the present invention may further comprise: the 4th functional unit, and the molten metal fluid for will obtain is same
The temperature and flow velocity of step are associated in molten metal fluid volume data.
In order to achieve the above object, invention additionally discloses a kind of molten metal fluid volume data detection systems, including at least just like
The upper molten metal fluid volume data detection device.Optionally, the molten metal fluid volume data detection device setting
In in the three-dimensional cloud platform of blast furnace external alignment high-temperature molten metal fluid, the molten metal fluid volume data detection device with
Computer foundation has network connection.
The invention has the following advantages:
The space temperature and velocity profile information of energy on-line synchronous detection high-temperature molten metal fluid, obtain high-temperature fusion gold
Belong to the volume data of fluid；And easy for installation, safe operation, it can be suitably used for the smelting scene of bad environments, can be widely applied
There is the acquisition of information of multiclass isomeric space characteristic distributions in temperature, flow velocity of different industries high-temperature molten metal fluid etc..
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the integration module block diagram of molten metal fluid volume data detection device disclosed by the embodiments of the present invention.
Fig. 2 is molten metal fluid volume data detection system block diagram disclosed by the embodiments of the present invention.
Fig. 3 is infrared/visible light integrated optical module frame chart disclosed by the embodiments of the present invention.
Fig. 4 is the FPGA hardware module frame chart of thermal-induced imagery pretreatment unit disclosed by the embodiments of the present invention.
Fig. 5 is the DSP hardware module frame chart of molten metal fluid temperature (F.T.) voxel detection unit disclosed by the embodiments of the present invention.
Fig. 6 is the FPGA hardware structural block diagram of visible light video pretreatment unit disclosed by the embodiments of the present invention.
Fig. 7 is the DSP hardware structural block diagram of molten metal fluid flow velocity voxel detection unit disclosed by the embodiments of the present invention.
Fig. 8 is the protection module block diagram of molten metal fluid volume data detection device disclosed by the embodiments of the present invention.
Fig. 9 is blast furnace iron notch molten iron liquid data detection device on-the-spot schematic disclosed by the embodiments of the present invention.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Embodiment one
The present embodiment discloses a kind of molten metal fluid volume data detection method, includes the following steps:
Step S1, molten metal fluid synchronous thermal-induced imagery and visible light video are obtained.
Optionally, which can be synchronized red based on infrared/visible light integrated optical module acquisition molten metal fluid
Outer thermal image and visible light video.Specifically, primary mirror optical path is arranged in the infrared/visible light integrated optical module, divides
Light microscopic, reflecting mirror and transmission optical path array, infrared light and visible light share primary mirror optical path, and optical signal divides after primary mirror optical path
Optical signal is divided into two by light microscopic, the optical signal after segmentation respectively by transmission optical path array, be incident on charge-coupled device and
Non-refrigeration focal surface detection array is to be respectively formed thermal-induced imagery and visible light video.
Step S2, the zone location that molten metal fluid is carried out in the thermal-induced imagery, to molten in localization region
Melt metal fluid and carries out the temperature that molten metal fluid is calculated；At the same time, frame is decomposited from the visible light video
Image obtains the flow velocity in camera coordinates system of molten metal fluid according to the characteristics of image of the molten metal fluid of extraction
, and the velocity field under the camera coordinates system is converted into the velocity field in world coordinate system and calculates molten metal fluid
Flow velocity.
In this step, it merges pyramid optical flow method and cross-correlation method calculates the flow velocity of molten metal fluid.Further,
Its infrared emittance can be also corrected according to the physical parameter of molten metal fluid.It is directed to the influence of dust simultaneously, establishes
Thermometric correction model, to improve the precision of online accurate detection temperature voxel.
Step S3, the synchronous temperature of obtained molten metal fluid and flow velocity are associated with molten metal fluid volume data
In.
Based on the present embodiment method, optionally, molten metal fluid is carried out respectively with two sets of independent FPGA+DSP resources
Temperature Treatment and molten metal flow velocity processing, wherein FPGA resource it is preposition in DSP resource accordingly to be pre-processed.It is preferred that
Ground, is arranged protection module outside the circuit resource for data processing, and the protection module includes: the protection with air cooling protection
Cylinder, air inlet, exhaust outlet and protection camera lens；The exhaust outlet is set to the front end of the protection module, utilizes the air inlet
While the cold wind or nitrogen being passed through take away heat via the exhaust outlet, the protection camera lens is purged.
Further, also automatic clearing mechanism can be arranged on above-mentioned protection module in the present embodiment, the automatic sweeping machine
Structure is used for: in the case where not having to the dormant state of acquisition thermal-induced imagery and visible light video, being carried out at cleaning to the protection camera lens
Reason, after cleaning, closes the lid automatically to prevent dust pollution；And in starting thermal-induced imagery and visible light video acquisition
Afterwards, lid is automatically opened.
Embodiment two
The present embodiment discloses a kind of for executing the corollary apparatus and system of above-described embodiment method.
The present embodiment molten metal fluid volume data detection device includes at least following first to fourth functional units.Each group
The function of part is described below:
First functional unit, for obtaining molten metal fluid synchronous thermal-induced imagery and visible light video.Optionally,
First functional unit includes: infrared/visible light integrated optical module.Specifically, infrared/visible light integrated optical the mould
Block includes: primary mirror optical path, spectroscope, reflecting mirror and transmission optical path array；Wherein, infrared light and visible light share primary mirror optical path,
After primary mirror optical path, optical signal is divided into two optical signal by spectroscope, and the optical signal after segmentation is respectively by transmission optical path battle array
Column, are incident on charge-coupled device and non-refrigeration focal surface detection array to be respectively formed thermal-induced imagery and visible light video.
Second functional unit, for carrying out the zone location of molten metal fluid in the thermal-induced imagery, to positioning
Molten metal fluid in region carries out the temperature that molten metal fluid is calculated.
Third functional unit, for decompositing frame image from the visible light video, according to the motlten metal stream of extraction
The characteristics of image of body obtains the velocity field in camera coordinates system of molten metal fluid, and by the stream under the camera coordinates system
Fast field is converted to the velocity field in world coordinate system and calculates the flow velocity of molten metal fluid.
4th functional unit, the temperature and flow velocity that the molten metal fluid for will obtain synchronizes are associated with motlten metal stream
In body volume data.
Preferably, the present embodiment carries out the Temperature Treatment of molten metal fluid with two sets of independent FPGA+DSP resources respectively
With molten metal flow velocity processing, wherein FPGA resource it is preposition in DSP resource accordingly to be pre-processed.
Molten metal fluid volume data detection system disclosed in the present embodiment, including at least one molten metal as described above
Fluid volume data detection device.Optionally, which is set to blast furnace external alignment high temperature
In the three-dimensional cloud platform of molten metal fluid, the molten metal fluid volume data detection device and computer foundation have network company
It connects.
To better understand the present invention convenient for those skilled in the art, below in subordinate concept combination concrete application scene
Logical architecture setting be described further:
The molten metal fluid volume data detection device that the present embodiment proposes is mainly by infrared/visible light integrated optical mould
Block, temperature voxel detection integration module, flow velocity voxel detection integration module and protection module etc. are constituted, and wherein temperature voxel detects
Integration module and flow velocity voxel detection integration module are the nucleus modules of the present apparatus, as shown in Figure 1.In detection high-temperature molten metal
When the volume data of fluid, volume data detection device, gigabit Ethernet, computer and three-dimensional holder etc. together constitute molten metal
The volume data detection system of fluid, as shown in Figure 2, wherein structure title corresponding to each label is respectively as follows: 40 --- melting gold
Category fluid volume data detection device, 50 --- three-dimensional platform, 100 --- gigabit Ethernet, 200 --- computer.Using this
When embodiment device on-line checking molten metal fluid volume data, device is fixed on three-dimensional holder, by adjusting device
Installation site and angle, make device be aligned high-temperature molten metal fluid, thus obtain molten metal fluid thermal-induced imagery and
Visible light video.A large amount of on-line checking data high-speeds are transmitted in computer using gigabit Ethernet.
Infrared/visible light integrated optical module is made of primary mirror optical path, spectroscope, reflecting mirror and transmission optical path array.
Infrared light and visible light share primary mirror optical path, and after primary mirror optical path, optical signal is divided into two optical signal by spectroscope, after segmentation
Optical signal respectively into cross transmission optical path array, be incident on charge-coupled device (CCD) and non-refrigeration focal surface detection array.Such as
Shown in Fig. 3.When detecting the volume data of molten metal fluid, infrared/visible optical module can receive the red of molten metal fluid
External radiation and visible light make charge-coupled device (CCD) receive visible light using spectroscope, can with form molten metal
Light-exposed image makes non-refrigeration focal surface detection array receive molten metal for detecting the speed voxel of molten metal fluid
Infrared light, to form the thermal-induced imagery of molten metal, for detecting the temperature voxel of molten metal.
Temperature voxel detection integration module includes thermal-induced imagery acquisition unit, thermal-induced imagery pretreatment unit, melting
Metal fluid temperature voxel detection unit etc..
Thermal-induced imagery acquisition unit is mainly by non-refrigeration focal surface infrared acquisition element array, A/D conversion chip, power supply etc.
It constitutes.Non-refrigeration focal surface infrared acquisition element array perceives the infra-red radiation of molten metal fluid, and infra-red radiation is converted to
Analog signal recycles A/D conversion chip to convert analog signals into the digital signal convenient for processing, is sent to FPGA and DSP etc.
In the signal processing circuit of composition.
The major function of thermal-induced imagery pretreatment unit is that molten metal fluid is oriented by image processing algorithm, from
And obtain the corresponding temperature data of molten metal fluid.It also include it due to both including molten metal fluid in thermal-induced imagery
His non-substances of interest.Therefore, it is necessary to carry out localization process to thermal-induced imagery, obtain only corresponding comprising molten metal fluid
Temperature data.Due to the temperature difference of molten metal fluid and other non-substances of interest, the molten metal on thermal-induced imagery
There are apparent boundaries with other non-substances of interest for fluid, therefore, carry out edge inspection to thermal-induced imagery using canny operator
It surveys, to obtain the boundary of molten metal fluid, and then orients the position of molten metal fluid.Then, molten metal is utilized
The boundary information of fluid and original thermal-induced imagery obtain thermal-induced imagery region only comprising molten metal fluid.
The hardware module of thermal-induced imagery pretreatment unit is as shown in figure 4, include communication control module, flash storage mould
Block, logic and timing management module and execution module.Communication control module is responsible for distributing thermal-induced imagery information to be processed
Give flash memory module；Storage and calling of the flash memory module for required algorithm or parameter；Execution module is responsible for red
Outer thermal image is handled；Logic and timing management module are responsible for thermal-induced imagery acquisition unit and provide data drive signal,
It is responsible for logic and timing management between algorithm and between multiple execution modules simultaneously.Pre-processing obtained molten metal fluid mass will
For molten metal fluid temperature (F.T.) voxel detection unit.
Molten metal fluid temperature (F.T.) voxel detection unit is the core cell of device detection temperature voxel, using pre-processing
The molten metal fluid mass arrived finally obtains the temperature of molten metal fluid by temperature voxel detection unit.In melting gold
When belonging to the scene of smelting using thermal infrared imager thermometric, need to be corrected its emissivity, to guarantee original thermal-induced imagery temperature
The accuracy of degree evidence.Molten metal smelts environment often relatively badly, and there are the influences of splashing clinker, random distribution dust.
When there are environmental disturbances such as dust, molten metal temperature result is repaired using the Temperature correction model influenced for dust
Just, to obtain accurate molten metal temperature.
Optionally, the hardware module of molten metal fluid temperature (F.T.) voxel detection unit is as shown in figure 5, include buffer area, life
Enable module, DSP, external SRAM etc..Buffer area can cache the thermal-induced imagery of molten metal fluid mass；Command module is to receive
When issuing idle signal to all dsp chips, the task management module is transmitted a signal to, task division module appoints processing
Business is divided, and issues operating instruction to DSP；DSP is responsible for initiation parameter storage, the transmitting of thermal-induced imagery temperature data
Rate calculates, correction coefficient calculates etc.；The parameters such as emissivity, correction coefficient can be loaded into progress molten metal temperature in external SRAM
Spend the calculating of voxel.
In the present embodiment specific application example, flow velocity voxel detect integration module can by visible light video acquisition unit,
Visible images pretreatment unit, fluid flow rate voxel detection unit etc..
Visible light video acquisition unit is mainly made of CCD, high-speed video capture card and video compressing module etc..It utilizes
CCD acquires high-temperature fusion fluid and goes out the high frame-rate video stream information flowed, and is transferred to high-speed collection card, by high-speed collection card
A/D conversion module the high frame-rate video source analog signal received is converted into digital signal, then by digital signal send to
It, again will be big by the video compress chip carried on video frequency collection card after storage a period of time in the included memory of high-speed collection card
The video signal compression of amount, and the vision signal compressed is sent to the visible light video pretreatment unit of rear end, at the same time,
High-speed video capture card is opened up new memory space in memory and is regarded for storing current video flowing collected, and in the last period
Its memory space is discharged after frequency stream end of transmission.
Visible light video pretreatment unit includes video flowing decomposing module, frame image denoising module, melt flow stream positioning mould
Block etc..The video flowing decomposing module compressed video data signal decomposition framing image that transmits video acquisition unit first, with
N number of frame image in time T is to divide the period, and in chronological order, all frame images, which are divided into n, has same number of frames N's
Frame image group.In view of site environment is severe, there are the interference of the external noises such as dust, contains in the video stream signal of acquisition and make an uproar
Therefore sound using the filter in frame image denoising module, removes the noise in frame image group.Pretreated visible light frame
Image group will be transmitted to molten metal fluid flow velocity online detection unit for calculating fluid flow rate voxel.
The hardware configuration of visible light video pretreatment unit is as shown in fig. 6, include communication control module, flash storage mould
Block, logic and timing management module and execution module.Communication control module is responsible for high frame rate video flow point dispensing to be processed
Flash memory module；Flash memory module is used for video flowing decomposition algorithm, Image denoising algorithm and melt flow stream location algorithm
Storage and calling；Execution module have it is multiple, be responsible for high frame frequency image carry out parallel processing；Logic and timing management module are negative
Duty is that high-speed video acquisition unit provides data drive signal, at the same logic between responsible algorithm and between multiple execution modules and when
Sequence management.Molten metal fluid flow velocity voxel detection unit will be used for by pre-processing obtained molten metal fluid mass.
Molten metal fluid flow velocity voxel detection unit is the core cell of device flow velocity voxel detection.Firstly, using can
Each frame image group that light-exposed video pre-processing units generate is mentioned by image processing algorithms such as edge detection, Morphological scale-spaces
The characteristics of image of molten metal fluid in n frame image is taken, and selects interested characteristics of image, can be reduced at image in this way
The time of reason.Secondly the thick velocity field of molten metal fluid is obtained respectively using pyramid optical flow method and cross-correlation method, and be based on
Blending algorithm obtains smart velocity field.The calibration under world coordinate system is carried out to high speed camera again, by the essence under camera coordinates system
Velocity field is transformed under world coordinate system, the final smart velocity field for obtaining molten metal fluid.
The hardware module of molten metal fluid flow velocity voxel detection unit as shown in fig. 7, comprises buffer area, command module,
Multichannel DSP and external SRAM etc..Buffer area can cache the high frame frequency image of molten metal fluid mass；Command module receives institute
When thering is dsp chip to issue idle signal, transmit a signal to the task management module, task division module to processing task into
Row divides, and issues operating instruction to DSP, makes the high frame frequency image of multichannel DSP parallel processing molten metal fluid；Multichannel DSP
Using embedded pyramid optical flow algorithm, cross correlation algorithm and thick flow field blending algorithm, the thick of high frame frequency visible images is calculated
Velocity field；Thick flow velocity field data can be loaded into the calculating that molten metal flow velocity voxel is carried out in corresponding external SRAM.
Further, since molten metal smelts bad environments, there are hyperthermia radiation, clinkers to splash, random distribution dust
Deng interference, in order to which molten metal body data detection device can smelt live operation steady in a long-term, it is necessary to be carried out to device
Protection.The protection module of high-temperature molten metal fluid volume data detection device is mainly by protection cylinder, protection camera lens, automatic sweeping machine
Structure, air inlet etc. are constituted, as shown in Figure 8, wherein structure title corresponding to each label is respectively as follows: 1 --- automatic sweeping machine
Structure, 2 --- protection cylinder, 3 --- air inlet, 4 --- flange, 5 --- incoming line, 6 --- composite cable, 7 --- protective glass,
8 --- optical system, temperature and flow velocity voxel detection module.In order to avoid hyperthermia radiation influences the detection accuracy of detection device,
Devise with air cooling protection protection cylinder, cold wind or nitrogen are passed through by air inlet, make flowing cold wind or nitrogen with it is interior
Continuous heat exchange is carried out between portion's detection module, and heat is taken away by the exhaust outlet of detection device front end, is reached to detection
Device carries out the purpose of air cooling cooling, so that device can be used in industry spot steadily in the long term.Meanwhile considering high-temperature fusion gold
It is larger to belong to dust in the smelting environment of fluid, and high-temperature fusion fluid easily splashes, to avoid dust, clinker etc. from being splashed to internal mirror
On head, protection camera lens is devised, is played a protective role to the internal lens of temperature and flow velocity voxel detection module.Device is working
When, if dust is covered on protection camera lens, it will cause rear end imaging and shadow occur.Protective glasses head surface when working for avoiding device
By dust pollution, automatic clearing mechanism is devised, the cold wind or nitrogen being passed through using air inlet are taken away via front end exhaust outlet
While heat, protection camera lens is purged, guarantees that thermal-induced imagery and visible light video acquisition unit can collect clearly
Clear high-temperature fusion fluid image.In addition, automatic clearing mechanism carries out the protection camera lens of device within the device non-working time
Cleaning processing, after cleaning, closes the lid automatically to prevent dust pollution.When detection device is started to work, automatic cleaning
Mechanism automatically opens lid, so that device can collect the image or video of high-temperature fusion fluid.
Further, referring to Fig. 9, wherein structure title corresponding to each label is respectively as follows: 10 --- blast furnace, 20 ---
Tapping hole, 30 --- molten hot metal fluid, 40 --- molten metal fluid volume data detection device, 50 --- three-dimensional platform,
6 --- composite cable.The present embodiment is using the 2650m3 large blast furnace in certain iron-smelter as experiment porch, by the molten metal of invention
Fluid volume data detection device is applied in No. 1 tapping hole hot metal flow detection of the blast furnace.
In order to meet the needs of high-speed and high-temperature hot metal flow temperature flow rate detection, non-refrigeration focal surface detects element array resolution ratio
For 1024*768, infrared measurement of temperature frame frequency is 30Hz, and CCD resolution ratio is 1280*720, it is seen that flash ranging temperature frame frequency is 240Hz, front end
Field angle is 30 °.Detection device is mounted on beside the station of No. 1 tapping hole, and from tapping hole 8m, building is as of fig. 9 shown
The implementation steps of detection system, the detection of molten iron volume data are as follows:
1. the fixing body data detection device near blast furnace operating platform makes the front lens face blast furnace iron notch iron of device
Water flow.The molten iron temperature below high tapping hole is detected using fast thermocouple, infrared emission is obtained based on emissivity bearing calibration
Rate.According to the in-site installation parameter of detection device, Visible Light Camera is demarcated, determines that world coordinate system and image pixel are sat
Relationship between mark.
2. being acquired using infrared/visible light integrated optical module, thermal-induced imagery acquisition unit and visible light video single
Member obtains the thermal-induced imagery and visible light video of hot metal flow, and is transmitted in FPGA and DSP hardware and carries out Parallel preconditioning.
3. being calculated in the FPGA hardware platform of processing thermal-induced imagery using the hot metal flow zone location in FPGA
Method, the corresponding temperature data in detent rail water flow spaces.Simultaneously in the FPGA hardware platform of processing visible light video, using being embedded in
Frame picture breakdown algorithm, Image denoising algorithm in FPGA hardware platform obtain visible light frame image group.
4. the hot metal flow regional temperature data and visible light frame image group that multichannel FPGA hardware platform exports are inputted respectively
The multichannel DSP hardware structure for the detection of molten iron flow rates voxel is neutralized to the DSP hardware structure detected for molten iron temperature voxel
In, temperature field and the velocity field of high-temperature fusion molten iron are obtained, to constitute molten iron volume data.
To sum up, the present embodiment has the characteristics that following:
(1), temperature, the flow velocity etc. for being put forward for the first time high-temperature molten metal fluid volume data to describe molten metal fluid have
The information of multiclass isomeric space characteristic distributions.
(2), design high-temperature molten metal fluid volume data detection device detects the volume data of molten metal fluid for the first time,
The multiclass Heterogeneous Information of detection molten metal fluid can be synchronized.
(3), infrared/visible light integrated optical module is devised, the infra-red radiation and visible light of molten metal fluid are total
With primary mirror optical path, and by spectroscope and transmission optical path array, non-refrigeration focal surface detection element array is made to receive infra-red radiation,
Ccd is set to receive visible light.
(4), molten metal fluid temperature (F.T.) voxel detection module is devised.It is right according to the physical parameter of molten metal fluid
Its infrared emittance is corrected.It is directed to the influence of dust simultaneously, establishes thermometric correction model, can accurately detect temperature online
Spend voxel.
(5), molten metal flow velocity voxel detection module is devised.Obtain the high frame frequency visible light video of molten metal fluid
Image, merges pyramid optical flow method and cross-correlation method obtains the flow velocity voxel of molten metal fluid.
(6), the protection cylinder with air cooling protection and automatic clearing mechanism is devised, to overcome the hyperthermia radiation at the scene of smelting
The pollution of influence and dust to detection device to internal detection circuitry.
To sum up, molten metal fluid volume data detection device, method disclosed in the various embodiments described above institute of the present invention difference and
System, at least have it is following the utility model has the advantages that
The space temperature and velocity profile information of energy on-line synchronous detection high-temperature molten metal fluid, obtain high-temperature fusion gold
Belong to the volume data of fluid；And easy for installation, safe operation, it can be suitably used for the smelting scene of bad environments, can be widely applied
There is the acquisition of information of multiclass isomeric space characteristic distributions in temperature, flow velocity of different industries high-temperature molten metal fluid etc..
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of molten metal fluid volume data detection device characterized by comprising
First functional unit, for obtaining molten metal fluid synchronous thermal-induced imagery and visible light video；
Second functional unit, for carrying out the zone location of molten metal fluid in the thermal-induced imagery, to localization region
In molten metal fluid carry out the temperature that molten metal fluid is calculated；
Third functional unit, for decompositing frame image from the visible light video, according to the molten metal fluid of extraction
Characteristics of image obtains the velocity field in camera coordinates system of molten metal fluid, and by the velocity field under the camera coordinates system
It is converted to the velocity field in world coordinate system and calculates the flow velocity of molten metal fluid.
2. molten metal fluid volume data detection device according to claim 1, which is characterized in that further include:
4th functional unit, the temperature and flow velocity that the molten metal fluid for will obtain synchronizes are associated with molten metal fluid body
In data.
3. molten metal fluid volume data detection device according to claim 1 or 2, which is characterized in that first function
Can component include:
Infrared/visible light integrated optical module, for obtaining the synchronous thermal-induced imagery of molten metal fluid and visible light view
Frequently.
4. molten metal fluid volume data detection device according to claim 3, which is characterized in that described infrared/visible
Light integrated optical module includes: primary mirror optical path, spectroscope, reflecting mirror and transmission optical path array；Wherein, infrared light and visible light
Primary mirror optical path is shared, after primary mirror optical path, optical signal is divided into two optical signal by spectroscope, and the optical signal after segmentation passes through respectively
Cross transmission optical path array, be incident on charge-coupled device and non-refrigeration focal surface detection array be respectively formed thermal-induced imagery and
Visible light video.
5. molten metal fluid volume data detection device according to claim 1 or 2, which is characterized in that independent with two sets
FPGA+DSP resource carry out respectively molten metal fluid Temperature Treatment and molten metal flow velocity processing, wherein FPGA resource
It is preposition in DSP resource accordingly to be pre-processed.
6. molten metal fluid volume data detection device according to claim 1 or 2, which is characterized in that further include:
Protection module is set to outside the circuit resource for data processing, and the protection module includes: with the anti-of air cooling protection
Casing, air inlet, exhaust outlet and protection camera lens；The exhaust outlet is set to the front end of the protection module, utilizes the air inlet
While the cold wind or nitrogen that hole is passed through take away heat via the exhaust outlet, the protection camera lens is purged.
7. molten metal fluid volume data detection device according to claim 6, which is characterized in that further include:
The automatic clearing mechanism being set on the protection module, is used for: having to acquisition thermal-induced imagery and visible light video
Dormant state under, cleaning processing is carried out to the protection camera lens, after cleaning, is closed the lid automatically to prevent dust dirty
Dye；And after starting thermal-induced imagery and visible light video acquisition, automatically open lid.
8. a kind of molten metal fluid volume data detection method characterized by comprising
Obtain molten metal fluid synchronous thermal-induced imagery and visible light video；
In the thermal-induced imagery carry out molten metal fluid zone location, to the molten metal fluid in localization region into
The temperature of molten metal fluid is calculated in row；
Frame image is decomposited from the visible light video, and melting gold is obtained according to the characteristics of image of the molten metal fluid of extraction
Belong to the velocity field in camera coordinates system of fluid, and the velocity field under the camera coordinates system is converted in world coordinate system
Velocity field and calculate the flow velocity of molten metal fluid；
The synchronous temperature of obtained molten metal fluid and flow velocity are associated in molten metal fluid volume data.
9. molten metal fluid volume data detection method according to claim 8, which is characterized in that based on infrared/visible
Light integrated optical module obtains the synchronous thermal-induced imagery and visible light video of molten metal fluid.
10. molten metal fluid volume data detection method according to claim 9, which is characterized in that it is described it is infrared/can
Primary mirror optical path, spectroscope, reflecting mirror and transmission optical path array are set in light-exposed integrated optical module, and infrared light and visible light are total
With primary mirror optical path, after primary mirror optical path, optical signal is divided into two optical signal by spectroscope, and the optical signal after segmentation passes through respectively
Optical path array is transmitted, is incident on charge-coupled device and non-refrigeration focal surface detection array to be respectively formed thermal-induced imagery and can
Light-exposed video.
11. according to any molten metal fluid volume data detection method of claim 8 to 10, which is characterized in that with two
Cover Temperature Treatment and the processing of molten metal flow velocity that independent FPGA+DSP resource carries out molten metal fluid respectively, wherein
FPGA resource it is preposition in DSP resource accordingly to be pre-processed.
12. according to any molten metal fluid volume data detection method of claim 8 to 10, which is characterized in that with
In protection module is arranged outside the circuit resource of data processing, the protection module includes: with the protection cylinder protected, air inlet of being gas-cooled
Hole, exhaust outlet and protection camera lens；The exhaust outlet is set to the front end of the protection module, is passed through using the air inlet cold
While wind or nitrogen take away heat via the exhaust outlet, the protection camera lens is purged.
13. molten metal fluid volume data detection method according to claim 12, which is characterized in that further include:
Automatic clearing mechanism is set, and the automatic clearing mechanism is used on the protection module: having to acquisition infrared chart
Under the dormant state of picture and visible light video, cleaning processing is carried out to the protection camera lens, after cleaning, is closed the lid automatically
To prevent dust pollution；And after starting thermal-induced imagery and visible light video acquisition, automatically open lid.
14. a kind of molten metal fluid volume data detection system characterized by comprising
At least just like any molten metal fluid volume data detection device of claim 1 to 7.
15. molten metal fluid volume data detection system according to claim 14, which is characterized in that the molten metal
Fluid volume data detection device is set in the three-dimensional cloud platform of blast furnace external alignment high-temperature molten metal fluid, the melting gold
Belonging to fluid volume data detection device and computer foundation has network connection.
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