CN103605987A - Coal field fire area determining method and device - Google Patents
Coal field fire area determining method and device Download PDFInfo
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- CN103605987A CN103605987A CN201310634086.9A CN201310634086A CN103605987A CN 103605987 A CN103605987 A CN 103605987A CN 201310634086 A CN201310634086 A CN 201310634086A CN 103605987 A CN103605987 A CN 103605987A
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Abstract
The invention discloses a coal field fire area determining method and device. The coal field fire area determining method includes the steps of obtaining thermal infrared image data of a target area, obtaining land surface temperature information of the target area according to the thermal infrared image data of the target area, determining the position of the burning center of coal fire of the target area according to the land surface temperature information of the target area, and determining the burning area of a current coal field fire area in the target area according to the position of the burning center of the coal fire of the target area. By means of the coal field fire area determining method and device, the effect of improving monitoring accuracy of the coal field fire area is achieved.
Description
Technical field
The present invention relates to coalfield fire monitoring field, in particular to definite method and apparatus of a kind of coalfield flame range.
Background technology
Coal fire is the fire that coal combustion forms, existing coal fire remote sensing monitoring technology is by remote sensing, probing, physical prospecting, the method that on-site inspection combines is drawn a circle to approve coal fire distributive province, judgement coal fire combustion centre, wherein, remote sensing technique adopts satellite or aviation thermal infrared, near infrared data are as TM(Thematic Mapper, thematic mapper)/ETM+(Enhanced Thematic Mapper, Enhanced Thematic Mapper) data, ASTER(satellite sensor title) data, OMIS(Operational Modular Imaging Spectrometer) data and high spatial resolution data Quickbird, IKONOS(Yi Kenuosi satellite) etc. extract coal fire, satellite thermal imagery cannot carry out identification and the information extraction work of earth's surface coal fire by let us at all.For coal fire high temperature thermal anomaly district in outstanding satellite image, must take the disposal routes such as histogram linear stretch, exponential transform, exponential transform and linear stretch, the false colored enhancing of density slice, radiation calibration, geometry correction and temperature retrieval, complex disposal process.
The satellite remote-sensing image data acquisition time cycle is longer, and aviation thermal infrared flight needs spatial domain to examine the Complicated Flow waiting and affected by weather condition larger, needs geometric correction after obtaining Thermal Infrared Data, temperature retrieval, and the field survey of last field is verified.Need a large amount of time and easily omit high temperature abnormity point or exceptions area, the monitoring accuracy of coalfield flame range is low.
The low problem of monitoring accuracy for coalfield flame range in prior art, not yet proposes effective solution at present.
Summary of the invention
Fundamental purpose of the present invention is to provide definite method and apparatus of a kind of coalfield flame range, to solve the low problem of monitoring accuracy of coalfield flame range in prior art.
To achieve these goals, according to an aspect of the present invention, provide definite method of a kind of coalfield flame range.According to definite method of coalfield of the present invention flame range, comprise: the thermal infrared imagery data of obtaining target area; The surface temperature information of the thermal infrared imagery data acquisition target area by target area; According to the surface temperature information of target area, determine the position of the coal fire combustion centre of target area; And by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area.
Further, the surface temperature information of the thermal infrared imagery data acquisition target area by target area comprises: remove the disturbing factor in thermal infrared imagery data; Proofread and correct the temperature information of thermal infrared imagery data; And the temperature information that reads thermal infrared imagery data, the temperature information after reading is as surface temperature information.
Further, the surface temperature information of the thermal infrared imagery data acquisition target area by target area comprises: adopt different colors to show that different temperatures interval, to distinguish the temperature of the high temperature exceptions area in target area, determines that according to the surface temperature information of target area the position of the coal fire combustion centre of target area comprises: maximum temperature value and/or the minimum temperature value of determining high temperature exceptions area; The position of the coal fire combustion centre that determines target area by maximum temperature value and/or the minimum temperature value of high temperature exceptions area.
Further, the surface temperature information of the thermal infrared imagery data acquisition target area by target area comprises: the temperature value of the atural object that judgement thermal infrared imagery data show; Determine the scope of the temperature value of atural object, the position of determining the coal fire combustion centre of target area according to the surface temperature information of target area comprises: the set the goal combustion range of the current coalfield flame range in region of the circle of position of coal fire combustion centre of being determined the ，You target area, position of coal fire combustion centre by the scope of the temperature value of atural object comprises: obtain historical coalfield flame range information; Border by the historical coalfield of the position correction of coal fire combustion centre flame range, forms current coalfield flame range.
Further, after the surface temperature information of the thermal infrared imagery data acquisition target area by target area, the method for determining also comprises: obtain aviation spontaneous combustion cromogram; According to discernible atural object in aviation spontaneous combustion cromogram, thermal infrared imagery corresponding to thermal infrared imagery data carried out to partial correction; And the thermal infrared imagery using the image after partial correction as target area.
To achieve these goals, according to a further aspect in the invention, provide definite device of a kind of coalfield flame range.According to definite device of coalfield of the present invention flame range, comprise: the first acquiring unit, for obtaining the thermal infrared imagery data of target area; Second acquisition unit, for the surface temperature information of the thermal infrared imagery data acquisition target area by target area; Determining unit, for determining the position of the coal fire combustion centre of target area according to the surface temperature information of target area; And delineation unit, for the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre by target area.
Further, second acquisition unit comprises: remove module, for removing the disturbing factor of thermal infrared imagery data; Correction module, for proofreading and correct the temperature information of thermal infrared imagery data; And read module, for reading the temperature information of thermal infrared imagery data, the temperature information after reading is as surface temperature information.
Further, second acquisition unit comprises: display module, for adopting different colors to show that different temperatures interval is to distinguish the temperature of the high temperature exceptions area of target area, determining unit comprises: the first determination module, for determining maximum temperature value and/or the minimum temperature value of high temperature exceptions area; The second determination module, determines the position of the coal fire combustion centre of target area for the maximum temperature value by high temperature exceptions area and/or minimum temperature value.
Further, second acquisition unit comprises: judge module, for judging the temperature value of the atural object that thermal infrared imagery data show; The 3rd determination module, for determining the scope of the temperature value of atural object, determining unit is also determined the position of coal fire combustion centre for the scope of the temperature value by atural object, delineation unit comprises: acquisition module, for obtaining the information of historical coalfield flame range; The first correction module, the border for the historical coalfield of the position correction by coal fire combustion centre flame range, forms current coalfield flame range.
Further, determining device also comprises: the 3rd acquiring unit, after the surface temperature information for the thermal infrared imagery data acquisition target area by target area, obtains aviation spontaneous combustion cromogram; Correcting unit, for carrying out partial correction according to the discernible atural object of aviation spontaneous combustion cromogram to the thermal infrared imagery of target area; And generation unit, for the thermal infrared imagery using the image after partial correction as target area.
By the present invention, adopt definite method of coalfield flame range, obtain the surface temperature information of target area, determine the position of the coal fire combustion centre of target area, thereby draw a circle to approve better the combustion range of current coalfield flame range, the distribution border of extracting the coalfield flame range of target area, has solved the low problem of monitoring accuracy of coalfield flame range in prior art, thereby has reached the effect that improves the monitoring accuracy of coalfield flame range.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the structural representation of definite device of the coalfield flame range of first embodiment of the invention;
Fig. 2 is according to the structural representation of definite device of the coalfield flame range of second embodiment of the invention
Fig. 3 is according to the structural representation of definite device of the coalfield flame range of third embodiment of the invention
Fig. 4 is according to the process flow diagram of definite method of the coalfield flame range of first embodiment of the invention;
Fig. 5 is according to the process flow diagram of definite method of the coalfield flame range of second embodiment of the invention; And
Fig. 6 is according to the process flow diagram of definite method of the coalfield flame range of third embodiment of the invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, the term " first " in instructions of the present invention and claims and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, and needn't be for describing specific order or precedence.Should be appreciated that the data of such use are suitably exchanging in situation, so that embodiments of the invention described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that the process that has comprised series of steps or unit, method, system, product or equipment are not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
The embodiment of the present invention provides definite device of a kind of coalfield flame range, and this device can be realized its function by computer equipment.
Fig. 1 is according to the structural representation of definite device of the coalfield flame range of first embodiment of the invention.As shown in Figure 1, definite device of this coalfield flame range comprises: the first acquiring unit 10, second acquisition unit 20, determining unit 30 and delineation unit 40.
The first acquiring unit 10 is for obtaining the thermal infrared imagery data of target area.
Target area for example, for carrying out the region of coalfield fire area monitoring, the Camel Hill of Inner Mongolia Autonomous Region.Target area can be selected as required, does not limit and concrete region.The thermal infrared imagery data of target area can be to adopt the unmanned plane of hedgehopping to obtain, because the time cycle of satellite remote-sensing image data acquisition is long, aviation thermal infrared flight needs the Complicated Flow that spatial domain examines etc. and affected by weather condition larger, after obtaining thermal infrared imagery data, need geometric correction, temperature retrieval, the field survey checking of last field.Need a large amount of time and easily omit high temperature abnormity point or region; And utilize hedgehopping (unmanned plane) can shorten time cycle quick obtaining thermal infrared imagery data, thereby can directly read, displays temperature information reduces field work amount.Then the first acquiring unit 10 can obtain this thermal infrared imagery data, so that the terrestrial reference temperature of target area is processed.
Second acquisition unit 20 is for the surface temperature information of the thermal infrared imagery data acquisition target area by target area.
Rock, soil, desert, forest, meadow, water body, animal due to ground surface, or road, railway, fix with the mobile mankind of grade and build facility etc., as long as it,, more than absolute temperature (273 ℃), all can pass through the outside emission of thermal radiation information of body surface.And the thermal information that different atural object is externally launched can carry out live capture by thermal infrared temperature measurer or thermal infrared imaging instrument, with different temperature form or image format, show, can be in order to judge caloradiance and the distributing position of different atural objects.Therefore after obtaining the thermal infrared imagery data of target area, can read by thermal infrared imagery data the atural object temperature information of this target area, the surface temperature information of the target area by thermal infrared imagery data acquisition not only can be from putting, face is found Ground Heat abnormal information, thermal anomaly information under silt can also being covered is observed out accurately, has improved the abnormal detectability of flame range Ground Heat.
Determining unit 30 is for determining the position of the coal fire combustion centre of target area according to the surface temperature information of target area.
After getting the surface temperature information of target area, can analyze by a large amount of earth's surfaces temperature information to obtaining, delimit different high temperature abnormal informations distributed areas, can descend tentatively definitely the position of coal fire combustion centre, so that draw a circle to approve maximum flame range combustion range.
The coalfield Ground Heat image obtaining for thermal infrared sensors such as mini-bus satellite, U.S. TM, ETM satellite, America and Japan Aster satellites, on thermal infrared wave band image, the pixel that gray-scale value is high represents that earth's surface is to the higher position of atmosphere radiation heat, on black-and-white image, tone is by white-ash-Hei, represent heat radiation by by force to weak alternation, i.e. surface temperature a kind of changes in distribution from high to low.The such thermal imagery of naked-eye observation is just as find linen piebald on a grey coloured paper, and these piebalds just represent the high-temperature region of coal fire burning, and utilize extreme low-altitude thermal infrared imagery data, not only can represent that different temperature ranges embodies the vs. temperature of high temperature exceptions area with different colours, but also concrete manifestation more accurately goes out maximum temperature value or the minimum temperature value of high temperature exceptions area.Can determine by maximum temperature value or minimum temperature value the position of the coal fire combustion centre of target area.
Delineation unit 40 is for the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre by target area.
Because coalfield flame range is in the different time periods, can produce certain variation, wherein, current coalfield flame range is the coalfield flame range in current monitoring period of time target area, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area, can be, by the position of coal fire combustion centre, revision is proofreaied and correct in the border of historical coalfield flame range, thereby form the combustion range of current coalfield flame range, and then form the distribution plan of current coalfield, target area flame range.After determining the maximum temperature value or minimum temperature value of high temperature exceptions area, combustion centre in high temperature exceptions area be can judge, thereby distribution border and the coalfield flame range surface temperature information of coalfield flame range extracted better, can also judge coal fire burning degree.
According to the embodiment of the present invention, by obtaining the surface temperature information of target area, determine the position of the coal fire combustion centre of target area, thereby draw a circle to approve better the combustion range of current coalfield flame range, extract the distribution border of the coalfield flame range of target area, solve the low problem of monitoring accuracy of coalfield flame range in prior art, thereby reached the effect that improves the monitoring accuracy of coalfield flame range.
Fig. 2 is according to the structural representation of definite device of the coalfield flame range of second embodiment of the invention.Definite device of the coalfield flame range of this embodiment can be used as a kind of preferred implementation of definite device of the coalfield flame range of above-described embodiment.As shown in Figure 2, definite device of this coalfield flame range comprises: the first acquiring unit 10, second acquisition unit 20, determining unit 30 and delineation unit 40, wherein, second acquisition unit 20 comprises removes module 201, correction module 202 and read module 203.The first acquiring unit 10, determining unit 30 and delineation unit 40 and the first acquiring unit 10 shown in Fig. 1, determining unit 30 and to draw a circle to approve unit 40 functions identical, do not repeat here.
Remove module 201 for removing the disturbing factor of thermal infrared imagery data.
After obtaining the thermal infrared imagery data of target area, can adopt image data to process relevant professional software thermal infrared imagery data are carried out to pre-service, for example, by the parameters such as radiance, spectral range, transmission, absorption, air humidity, disappearance are set on software, thereby remove the disturbing factor in thermal infrared imagery data.Due in the thermal infrared imagery data obtaining due to impacts such as various environmental factors, there will be some disturbing factors, affect temperature on thermal infrared imagery and show, by removing disturbing factor, can improve the precision of the surface temperature of target area.
Correction module 202 is for proofreading and correct the temperature information of thermal infrared imagery data.
After removing disturbing factor, can proofread and correct the temperature information of thermal infrared imagery data, proofread and correct the temperature information due to disturbing factor impact, thereby make the temperature information of target area more accurate.
Read module 203 is for reading the temperature information of thermal infrared imagery data, and the temperature information after reading is as surface temperature information.
After proofreading and correct the temperature information of thermal infrared imagery data, read module 203 can directly read the temperature information of the thermal infrared imagery data after correction, and the surface temperature information using the temperature information reading as target area, so that the temperature value of the abnormal atural object of high temperature that judgement thermal infrared imagery data show, thereby can identify coal fire distribution situation.
Fig. 3 is according to the structural representation of definite device of the coalfield flame range of third embodiment of the invention.Definite device of the coalfield flame range of this embodiment can be used as a kind of preferred implementation of definite device of the coalfield flame range of above-described embodiment.As shown in Figure 3, definite device of this coalfield flame range comprises: the first acquiring unit 10, second acquisition unit 20, determining unit 30 and delineation unit 40.Wherein, second acquisition unit 20 comprises display module 204, and determining unit 30 comprises the first determination module 301 and the second determination module 302.The first acquiring unit 10 is identical with delineation unit 40 functions with the first acquiring unit 10 shown in Fig. 1 with delineation unit 40, does not repeat here.
Display module 204 is for adopting different colors to show that different temperatures interval is to distinguish the temperature of the high temperature exceptions area of target area.
The thermal infrared imagery data that unmanned plane by hedgehopping obtains, can show different temperature ranges with different colours, in order to distinguish the temperature of the high temperature exceptions area of target area.Make the temperature of high temperature exceptions area in target area corresponding from different color demonstrations, with respect to black-and-white image data, there is stronger identification, can very clearly reflect the terrestrial reference temperature information of target area.
The first determination module 301 is for determining maximum temperature value and/or the minimum temperature value of high temperature exceptions area.
By different colors, show that different temperatures is interval, thereby can specifically demonstrate more accurately maximum temperature value and/or the minimum temperature value of high temperature exceptions area.The first determination module 301 is determined maximum temperature value and/or the minimum temperature value of high temperature exceptions area, so that determine the position of the coal fire combustion centre of target area by maximum temperature value and/or minimum temperature value.
The second determination module 302 is determined the position of the coal fire combustion centre of target area for the maximum temperature value by high temperature exceptions area and/or minimum temperature value.
After determining the maximum temperature value and/or minimum temperature value of high temperature exceptions area, can judge by maximum temperature value and/or minimum temperature value the position of the coal fire combustion centre of target area.
Preferably, second acquisition unit comprises judge module and the 3rd determination module, and judge module is for judging the temperature value of the atural object that thermal infrared imagery data show.
Therefore owing to can show different temperature ranges with different colours in thermal infrared imagery, in order to distinguish the temperature of the high temperature exceptions area of target area, by different colors, can judge the temperature of the atural object on the thermal infrared imagery of target area.For example, unmanned plane hedgehopping simultaneously, at the chimney of industrial and mining enterprises, ground crack, massif etc., locate to choose a plurality of atural object high temperature abnormity point and ground normal temperature point, use Portable thermal infrared thermoviewer to measure its temperature value scope, so that the temperature value of check thermal infrared imagery data.
The 3rd determination module is for determining the scope of the temperature value of atural object.
After temperature value by the atural object on the thermal infrared imagery of judgement target area, can obtain temperature anomaly point and the ground normal temperature point of the atural object in target area, thereby learn the Temperature Distribution situation of the atural object in this region, determine the scope of temperature value of the atural object of target area, so that determine the position of coal fire combustion centre.
Determining unit 30 is also determined the position of coal fire combustion centre for the scope of the temperature value by atural object.
After the scope of temperature value of determining atural object, determine the position of coal fire combustion centre, that is to say the combustion centre that determines coalfield flame range.
Delineation unit comprises acquisition module and the first correction module.Acquisition module is for obtaining the information of historical coalfield flame range.
Historical coalfield flame range also can be called serious district, can be the coalfield flame range in target area before this monitoring.Because the coalfield flame range in each region can change along with the time, when the flame range of the coalfield in this monitoring objective region, can obtain the historical coalfield flame range of last monitoring, by checking historical coalfield flame range, find new flame range.
The first correction module, for the border of the historical coalfield of the position correction by coal fire combustion centre flame range, forms current coalfield flame range.
After obtaining the information of historical coalfield flame range, the position of the coal fire combustion centre that can obtain by monitoring is revised and is proofreaied and correct the border of historical coalfield flame range, thereby completes the distribution plan of new coalfield flame range.
Preferably, definite device of coalfield flame range also comprises the 3rd acquiring unit, correcting unit and generation unit.
After the surface temperature information of the 3rd acquiring unit for the thermal infrared imagery data acquisition target area by target area, obtain aviation spontaneous combustion cromogram.
Because the thermal infrared imagery getting by low latitude there will be geometric distortion, need to carry out image rectification, and be mounted on correct geographic coordinate, therefore after the surface temperature information of the thermal infrared imagery data acquisition target area by target area, can obtain aviation spontaneous combustion cromogram, and the basic map using this aviation spontaneous combustion cromogram as extreme low-altitude thermal infrared imagery geometry correction, thereby the abnormal thermal infrared imagery based on aviation spontaneous combustion cromogram formation target area.
Correcting unit is for carrying out partial correction according to the discernible atural object of aviation spontaneous combustion cromogram to the thermal infrared imagery of target area.
The extreme low-altitude thermal infrared imagery that every course line of unmanned plane can be gathered is according to discernible atural object in aviation natural color figure, (such as buildings, cheuch, well head, road, rock ditch etc.) chooses same place, from the geometry correction of local image, starts the correction that block-by-block completes the thermal infrared imagery of whole target area.
Generation unit is for the thermal infrared imagery using the image after partial correction as target area.
After the thermal infrared imagery of target area carries out partial correction, the image mosaic of partial correction can be become to the thermal infrared imagery of whole target area, image after inlaying is as the thermal infrared imagery of target area, thereby forms the thermal infrared imagery of whole target area.
By the embodiment of the present invention, by the thermal infrared imagery to target area, proofread and correct, form the thermal infrared imagery of the most final target area, thereby improved the accuracy of image.
The embodiment of the present invention also provides definite method of a kind of coalfield flame range.The method operates on computer equipment.It should be noted that, definite device of the coalfield flame range that definite method of the coalfield flame range of the embodiment of the present invention can provide by the embodiment of the present invention is carried out, definite method of the coalfield flame range that definite device of the coalfield flame range of the embodiment of the present invention also can provide for the execution embodiment of the present invention.
Fig. 4 is according to the process flow diagram of definite method of the coalfield flame range of first embodiment of the invention.As shown in Figure 4, definite method of this coalfield flame range comprises that step is as follows:
Step S101, obtains the thermal infrared imagery data of target area.
Target area for example, for carrying out the region of coalfield fire area monitoring, the Camel Hill of Inner Mongolia Autonomous Region.Target area can be selected as required, does not limit and concrete region.The thermal infrared imagery data of target area can be to adopt the unmanned plane of hedgehopping to obtain, because the time cycle of satellite remote-sensing image data acquisition is long, aviation thermal infrared flight needs the Complicated Flow that spatial domain examines etc. and affected by weather condition larger, after obtaining thermal infrared imagery data, need geometric correction, temperature retrieval, the field survey checking of last field.Need a large amount of time and easily omit high temperature abnormity point or region; And utilize hedgehopping (unmanned plane) can shorten time cycle quick obtaining thermal infrared imagery data, thereby can directly read, displays temperature information reduces field work amount.Obtain this thermal infrared imagery data, so that the terrestrial reference temperature of target area is processed.
Step S102, the surface temperature information of the thermal infrared imagery data acquisition target area by target area.
Rock, soil, desert, forest, meadow, water body, animal due to ground surface, or road, railway, fix with the mobile mankind of grade and build facility etc., as long as it,, more than absolute temperature (273 ℃), all can pass through the outside emission of thermal radiation information of body surface.And the thermal information that different atural object is externally launched can carry out live capture by thermal infrared temperature measurer or thermal infrared imaging instrument, with different temperature form or image format, show, can be in order to judge caloradiance and the distributing position of different atural objects.Therefore after obtaining the thermal infrared imagery data of target area, can read by thermal infrared imagery data the atural object temperature information of this target area, the surface temperature information of the target area by thermal infrared imagery data acquisition not only can be from putting, face is found Ground Heat abnormal information, thermal anomaly information under silt can also being covered is observed out accurately, has improved the abnormal detectability of flame range Ground Heat.
Step S103, determines the position of the coal fire combustion centre of target area according to the surface temperature information of target area.
After getting the surface temperature information of target area, can analyze by a large amount of earth's surfaces temperature information to obtaining, delimit different high temperature abnormal informations distributed areas, can descend tentatively definitely the position of coal fire combustion centre, so that draw a circle to approve maximum flame range combustion range.
The coalfield Ground Heat image obtaining for thermal infrared sensors such as mini-bus satellite, U.S. TM, ETM satellite, America and Japan Aster satellites, on thermal infrared wave band image, the pixel that gray-scale value is high represents that earth's surface is to the higher position of atmosphere radiation heat, on black-and-white image, tone is by white-ash-Hei, represent heat radiation by by force to weak alternation, i.e. surface temperature a kind of changes in distribution from high to low.The such thermal imagery of naked-eye observation is just as find linen piebald on a grey coloured paper, and these piebalds just represent the high-temperature region of coal fire burning, and utilize extreme low-altitude thermal infrared imagery data, not only can represent that different temperature ranges embodies the vs. temperature of high temperature exceptions area with different colours, but also concrete manifestation more accurately goes out maximum temperature value or the minimum temperature value of high temperature exceptions area.Can determine by maximum temperature value or minimum temperature value the position of the coal fire combustion centre of target area.
Step S104, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area.
Because coalfield flame range is in the different time periods, can produce certain variation, wherein, current coalfield flame range is the coalfield flame range in current monitoring period of time target area, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area, can be, by the position of coal fire combustion centre, revision is proofreaied and correct in the border of historical coalfield flame range, thereby form the combustion range of current coalfield flame range, and then form the distribution plan of current coalfield, target area flame range.After determining the maximum temperature value or minimum temperature value of high temperature exceptions area, combustion centre in high temperature exceptions area be can judge, thereby distribution border and the coalfield flame range surface temperature information of coalfield flame range extracted better, can also judge coal fire burning degree.
According to the embodiment of the present invention, by obtaining the surface temperature information of target area, determine the position of the coal fire combustion centre of target area, thereby draw a circle to approve better the combustion range of current coalfield flame range, extract the distribution border of the coalfield flame range of target area, solve the low problem of monitoring accuracy of coalfield flame range in prior art, thereby reached the effect that improves the monitoring accuracy of coalfield flame range.
Fig. 5 is according to the process flow diagram of definite method of the coalfield flame range of second embodiment of the invention.Definite method of the coalfield flame range of this embodiment can be used as a kind of preferred implementation of definite method of the coalfield flame range of above-described embodiment.As shown in Figure 5, definite method of this coalfield flame range comprises that step is as follows:
Step S201, obtains the thermal infrared imagery data of target area.
Target area for example, for carrying out the region of coalfield fire area monitoring, the Camel Hill of Inner Mongolia Autonomous Region.Target area can be selected as required, does not limit and concrete region.The thermal infrared imagery data of target area can be to adopt the unmanned plane of hedgehopping to obtain, because the time cycle of satellite remote-sensing image data acquisition is long, aviation thermal infrared flight needs the Complicated Flow that spatial domain examines etc. and affected by weather condition larger, after obtaining thermal infrared imagery data, need geometric correction, temperature retrieval, the field survey checking of last field.Need a large amount of time and easily omit high temperature abnormity point or region; And utilize hedgehopping (unmanned plane) can shorten time cycle quick obtaining thermal infrared imagery data, thereby can directly read, displays temperature information reduces field work amount.Obtain this thermal infrared imagery data, so that the terrestrial reference temperature of target area is processed.
Step S202, removes the disturbing factor in thermal infrared imagery data.
After obtaining the thermal infrared imagery data of target area, can adopt image data to process relevant professional software thermal infrared imagery data are carried out to pre-service, for example, by the parameters such as radiance, spectral range, transmission, absorption, air humidity, disappearance are set on software, thereby remove the disturbing factor in thermal infrared imagery data.Due in the thermal infrared imagery data obtaining due to impacts such as various environmental factors, there will be some disturbing factors, affect temperature on thermal infrared imagery and show, by removing disturbing factor, can improve the precision of the surface temperature of target area.
Step S203, proofreaies and correct the temperature information of thermal infrared imagery data.
After removing disturbing factor, can proofread and correct the temperature information of thermal infrared imagery data, proofread and correct the temperature information due to disturbing factor impact, thereby make the temperature information of target area more accurate.
Step S204, reads the temperature information of thermal infrared imagery data, and the temperature information after reading is as surface temperature information.
After proofreading and correct the temperature information of thermal infrared imagery data, can directly read the temperature information of the thermal infrared imagery data after correction, and the surface temperature information using the temperature information reading as target area, so that the temperature value of the abnormal atural object of high temperature that judgement thermal infrared imagery data show, thereby can identify coal fire distribution situation.
Step S205, determines the position of the coal fire combustion centre of target area according to the surface temperature information of target area.
After getting the surface temperature information of target area, can analyze by a large amount of earth's surfaces temperature information to obtaining, delimit different high temperature abnormal informations distributed areas, can descend tentatively definitely the position of coal fire combustion centre, so that draw a circle to approve maximum flame range combustion range.
The coalfield Ground Heat image obtaining for thermal infrared sensors such as mini-bus satellite, U.S. TM, ETM satellite, America and Japan Aster satellites, on thermal infrared wave band image, the pixel that gray-scale value is high represents that earth's surface is to the higher position of atmosphere radiation heat, on black-and-white image, tone is by white-ash-Hei, represent heat radiation by by force to weak alternation, i.e. surface temperature a kind of changes in distribution from high to low.The such thermal imagery of naked-eye observation is just as find linen piebald on a grey coloured paper, and these piebalds just represent the high-temperature region of coal fire burning, and utilize extreme low-altitude thermal infrared imagery data, not only can represent that different temperature ranges embodies the vs. temperature of high temperature exceptions area with different colours, but also concrete manifestation more accurately goes out maximum temperature value or the minimum temperature value of high temperature exceptions area.Can determine by maximum temperature value or minimum temperature value the position of the coal fire combustion centre of target area.
Step S206, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area.
Because coalfield flame range is in the different time periods, can produce certain variation, wherein, current coalfield flame range is the coalfield flame range in current monitoring period of time target area, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area, can be, by the position of coal fire combustion centre, revision is proofreaied and correct in the border of historical coalfield flame range, thereby form the combustion range of current coalfield flame range, and then form the distribution plan of current coalfield, target area flame range.After determining the maximum temperature value or minimum temperature value of high temperature exceptions area, combustion centre in high temperature exceptions area be can judge, thereby distribution border and the coalfield flame range surface temperature information of coalfield flame range extracted better, can also judge coal fire burning degree.
Fig. 6 is according to the process flow diagram of definite method of the coalfield flame range of third embodiment of the invention.Definite method of the coalfield flame range of this embodiment can be used as a kind of preferred implementation of definite method of the coalfield flame range of above-described embodiment.As shown in Figure 6, definite method of this coalfield flame range comprises that step is as follows:
Step S301, obtains the thermal infrared imagery data of target area.
Target area for example, for carrying out the region of coalfield fire area monitoring, the Camel Hill of Inner Mongolia Autonomous Region.Target area can be selected as required, does not limit and concrete region.The thermal infrared imagery data of target area can be to adopt the unmanned plane of hedgehopping to obtain, because the time cycle of satellite remote-sensing image data acquisition is long, aviation thermal infrared flight needs the Complicated Flow that spatial domain examines etc. and affected by weather condition larger, after obtaining thermal infrared imagery data, need geometric correction, temperature retrieval, the field survey checking of last field.Need a large amount of time and easily omit high temperature abnormity point or region; And utilize hedgehopping (unmanned plane) can shorten time cycle quick obtaining thermal infrared imagery data, thereby can directly read, displays temperature information reduces field work amount.Obtain this thermal infrared imagery data, so that the terrestrial reference temperature of target area is processed.
Step S302, adopts different colors to show that different temperatures interval is to distinguish the temperature of the high temperature exceptions area in target area.
The thermal infrared imagery data that unmanned plane by hedgehopping obtains, can show different temperature ranges with different colours, in order to distinguish the temperature of the high temperature exceptions area of target area.Make the temperature of high temperature exceptions area in target area corresponding from different color demonstrations, with respect to black-and-white image data, there is stronger identification, can very clearly reflect the terrestrial reference temperature information of target area.
Step S303, determines maximum temperature value and/or the minimum temperature value of high temperature exceptions area.
By different colors, show that different temperatures is interval, thereby can specifically demonstrate more accurately maximum temperature value and/or the minimum temperature value of high temperature exceptions area.The first determination module 301 is determined maximum temperature value and/or the minimum temperature value of high temperature exceptions area, so that determine the position of the coal fire combustion centre of target area by maximum temperature value and/or minimum temperature value.
Step S304, the position of the coal fire combustion centre that determines target area by maximum temperature value and/or the minimum temperature value of high temperature exceptions area.
After determining the maximum temperature value and/or minimum temperature value of high temperature exceptions area, can judge by maximum temperature value and/or minimum temperature value the position of the coal fire combustion centre of target area.
Step S305, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area.
Because coalfield flame range is in the different time periods, can produce certain variation, wherein, current coalfield flame range is the coalfield flame range in current monitoring period of time target area, by the set the goal combustion range of the current coalfield flame range in region of the circle of position of the coal fire combustion centre of target area, can be, by the position of coal fire combustion centre, revision is proofreaied and correct in the border of historical coalfield flame range, thereby form the combustion range of current coalfield flame range, and then form the distribution plan of current coalfield, target area flame range.After determining the maximum temperature value or minimum temperature value of high temperature exceptions area, combustion centre in high temperature exceptions area be can judge, thereby distribution border and the coalfield flame range surface temperature information of coalfield flame range extracted better, can also judge coal fire burning degree.
Preferred, step S102 comprises step S1021 and step S1022:
Step S1021, the temperature value of the atural object that judgement thermal infrared imagery data show.
Therefore owing to can show different temperature ranges with different colours in thermal infrared imagery, in order to distinguish the temperature of the high temperature exceptions area of target area, by different colors, can judge the temperature of the atural object on the thermal infrared imagery of target area.For example, unmanned plane hedgehopping simultaneously, at the chimney of industrial and mining enterprises, ground crack, massif etc., locate to choose a plurality of atural object high temperature abnormity point and ground normal temperature point, use Portable thermal infrared thermoviewer to measure its temperature value scope, so that the temperature value of check thermal infrared imagery data.
Step S1022, determines the scope of the temperature value of atural object.
After temperature value by the atural object on the thermal infrared imagery of judgement target area, can obtain temperature anomaly point and the ground normal temperature point of the atural object in target area, thereby learn the Temperature Distribution situation of the atural object in this region, determine the scope of temperature value of the atural object of target area, so that determine the position of coal fire combustion centre.
Step S103 comprises step S1031, is determined the position of coal fire combustion centre by the scope of the temperature value of atural object.
After the scope of temperature value of determining atural object, determine the position of coal fire combustion centre, that is to say the combustion centre that determines coalfield flame range.
Step S104 comprises step S1041 and step S1022:
Step S1041, obtains historical coalfield flame range information.
Historical coalfield flame range also can be called serious district, can be the coalfield flame range in target area before this monitoring.Because the coalfield flame range in each region can change along with the time, when the flame range of the coalfield in this monitoring objective region, can obtain the historical coalfield flame range of last monitoring, by checking historical coalfield flame range, find new flame range.
The border of the historical coalfield of the position correction flame range of step S1042 ，You coal fire combustion centre, forms current coalfield flame range.
After obtaining the information of historical coalfield flame range, the position of the coal fire combustion centre that can obtain by monitoring is revised and is proofreaied and correct the border of historical coalfield flame range, thereby completes the distribution plan of new coalfield flame range.
Preferably, after step S102, definite method of coalfield flame range is further comprising the steps of:
Step S1, obtains aviation spontaneous combustion cromogram.
Because the thermal infrared imagery getting by low latitude there will be geometric distortion, need to carry out image rectification, and be mounted on correct geographic coordinate, therefore after the surface temperature information of the thermal infrared imagery data acquisition target area by target area, can obtain aviation spontaneous combustion cromogram, and the basic map using this aviation spontaneous combustion cromogram as extreme low-altitude thermal infrared imagery geometry correction, thereby the abnormal thermal infrared imagery based on aviation spontaneous combustion cromogram formation target area.
Step S2, carries out partial correction according to discernible atural object in aviation spontaneous combustion cromogram to thermal infrared imagery corresponding to thermal infrared imagery data.
The extreme low-altitude thermal infrared imagery that every course line of unmanned plane can be gathered is according to discernible atural object in aviation natural color figure, (such as buildings, cheuch, well head, road, rock ditch etc.) chooses same place, from the geometry correction of local image, starts the correction that block-by-block completes the thermal infrared imagery of whole target area.
Step S3, the thermal infrared imagery using the image after partial correction as target area.
It should be noted that, in the step shown in the process flow diagram of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
After the thermal infrared imagery of target area carries out partial correction, the image mosaic of partial correction can be become to the thermal infrared imagery of whole target area, image after inlaying is as the thermal infrared imagery of target area, thereby forms the thermal infrared imagery of whole target area.
By the embodiment of the present invention, by the thermal infrared imagery to target area, proofread and correct, form the thermal infrared imagery of final target area, thereby improved the accuracy of image.
Be the description of an application scenarios of the present invention below, wherein the Camel Hill of Inner Mongolia Autonomous Region is target area.
Near peace ditch colliery, the Camel Hill colliery of Inner Mongolia Autonomous Region, use thermal imaging to carry out extreme low-altitude unmanned plane thermal infrared imaging, the flight of unmanned plane North and South direction, 12 flight line of aerial photographies are arranged from east to west.Thermal infrared photographic aviation design area 50km
2left and right.
Unmanned plane during flying parameter: with 10 seconds intervals, take continuously against the wind, 67.7%, with 8 seconds intervals, to take continuously with the wind, longitudinal overlap rate is 38.0%; Image sidelapping rate: 31.3%; Individual image: long 746m, wide 576m; Ground resolution: 2.4m.
Thermal infrared imaging instrument technical parameter: 25mm standard lens: field angle 32x25 °/0.3m, 1.8mrad; Heat sensitivity is better than 30 ℃ of 0.08 ℃ of@; Infrared imaging speed 50/60HZ; Digital picture is amplified 4.2 times; Non-refrigeration focal surface trace thermal detector 320x240 pixel; Spectral range 7.5～14um; Temperature-measuring range-40～+ 1200 ℃; Calibration range is changed automatically; The colored view finder of high definition TFT; 3.8 inches of TFT chromatic liquid crystal screens: 180 ° of inclination angles and 280 ° of corners, brightness is adjustable.
Unmanned plane hedgehopping simultaneously, at the chimney of industrial and mining enterprises, ground crack, massif etc., locate to choose a plurality of atural object high temperature abnormity point and ground normal temperature point, use Portable thermal infrared thermoviewer to measure its temperature value scope, so that the temperature value of check thermal infrared imagery data.
After the extreme low-altitude thermal infrared imaging flight of unmanned plane, the thermal infrared imagery data that obtain, utilize thermal infrared imagery data processing professional software, by the setting parameter to radiance, spectral range, transmission, absorption, air humidity, disappearance, remove disturbing factor, the temperature information of proofreading and correct thermal infrared imagery data, directly reads atural object temperature value.The temperature value of the abnormal atural object of high temperature that judgement thermal infrared imagery data show, can identify coal fire distribution situation.The object temperature of analyzing thermal infrared imagery atural object is interval, can fully demonstrate atural object temperature range value in image, is convenient to differentiate burning degree.
Because low latitude obtains thermal imagery, there is geometric distortion, must carry out image rectification, be mounted on correct geographic coordinate.Step is:
The first step: Camel Hill-Ping ditch colliery aviation natural color figure is as the gradient map of extreme low-altitude thermal imagery geometry correction.
Second step: by the extreme low-altitude thermal infrared imagery in every course line according to discernible atural object in aviation natural color figure, (buildings, cheuch, well head, road, rock ditch etc.) choose same place, start block-by-block complete whole Camel Hill-Ping ditch colliery thermal imagery and proofread and correct from the geometry correction of local image.
The 3rd step: utilize projection inlaying process that the several piece aviation thermal infrared images after geometry correction is set into the extreme low-altitude thermal anomaly image in whole Camel Hill-Ping ditch colliery.
After extreme low-altitude thermal infrared imagery completes, carry out field and verify work on the spot, excluded ranges: industrial and mining enterprises, the vehicle of mucking haulage, sandstone etc.For example: thermal infrared imagery in indoor interpretation, find northeast, Ping Gou colliery, there is thermal anomaly information in a ground, place, is shown as the slag muck of burning on aviation natural color image.When field is verified, find that the blue or green cigarettes of these slag mucks curl up, diffused air pungent taste, and observed temperature is in the temperature value interval of thermal infrared imagery; Another place, can see that the slag muck of burning is broken, and because burning, all become bolarious burnt rock, ground actual measurement slag muck temperature is 286 ℃.
Through field, many places, verify on the spot again: combustion in situ situation and thermal infrared imagery information are very identical.
After field is verified on the spot and is finished, the non-coal fire of the fragmentary something lost coal of indoor rejecting coal yard laydown area, waste dump, sandstone, by the temperature value scope in extreme low-altitude thermal infrared imagery data, determine the combustion centre of flame range, revise the border in serious district, finally complete making Camel Hill-Ping ditch colliery flame range distribution plan.
It should be noted that, application scenarios of the present invention, just in order to describe better the present invention, does not have improper restriction to the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a definite method for coalfield flame range, is characterized in that, comprising:
Obtain the thermal infrared imagery data of target area;
By the surface temperature information of target area described in the thermal infrared imagery data acquisition of described target area;
According to the surface temperature information of described target area, determine the position of the coal fire combustion centre of described target area; And
By the position of the coal fire combustion centre of described target area, drawn a circle to approve the combustion range of the current coalfield flame range in described target area.
2. definite method of coalfield according to claim 1 flame range, is characterized in that, the surface temperature information by target area described in the thermal infrared imagery data acquisition of described target area comprises:
Remove the disturbing factor in described thermal infrared imagery data;
Proofread and correct the temperature information of described thermal infrared imagery data; And
Read the temperature information of described thermal infrared imagery data, the temperature information after reading is as surface temperature information.
3. definite method of coalfield according to claim 1 flame range, is characterized in that,
Surface temperature information by target area described in the thermal infrared imagery data acquisition of described target area comprises: adopt different colors to show that different temperatures interval is to distinguish the temperature of the high temperature exceptions area in described target area,
The position of determining the coal fire combustion centre of described target area according to the surface temperature information of described target area comprises: maximum temperature value and/or the minimum temperature value of determining described high temperature exceptions area; The position of determining the coal fire combustion centre of described target area by maximum temperature value and/or the described minimum temperature value of described high temperature exceptions area.
4. definite method of coalfield according to claim 1 flame range, is characterized in that,
Surface temperature information by target area described in the thermal infrared imagery data acquisition of described target area comprises: the temperature value that judges the atural object that described thermal infrared imagery data show; Determine the scope of the temperature value of described atural object,
The position of determining the coal fire combustion centre of described target area according to the surface temperature information of described target area comprises: by the scope of the temperature value of described atural object, determined the position of described coal fire combustion centre,
The combustion range of being drawn a circle to approve the current coalfield flame range in described target area by the position of the coal fire combustion centre of described target area comprises: obtain historical coalfield flame range information; Border by the historical coalfield of the position correction flame range of described coal fire combustion centre, forms described current coalfield flame range.
5. definite method of coalfield according to claim 1 flame range, is characterized in that, after the surface temperature information of target area described in the thermal infrared imagery data acquisition by described target area, described definite method also comprises:
Obtain aviation spontaneous combustion cromogram;
According to discernible atural object in described aviation spontaneous combustion cromogram, thermal infrared imagery corresponding to described thermal infrared imagery data carried out to partial correction; And
Thermal infrared imagery using the image after partial correction as described target area.
6. a definite device for coalfield flame range, is characterized in that, comprising:
The first acquiring unit, for obtaining the thermal infrared imagery data of target area;
Second acquisition unit, for the surface temperature information of target area described in the thermal infrared imagery data acquisition by described target area;
Determining unit, for determining the position of the coal fire combustion centre of described target area according to the surface temperature information of described target area; And
Draw a circle to approve unit, for the position of the coal fire combustion centre by described target area, draw a circle to approve the combustion range of the current coalfield flame range in described target area.
7. definite device of coalfield according to claim 6 flame range, is characterized in that, described second acquisition unit comprises:
Remove module, for removing the disturbing factor of described thermal infrared imagery data;
Correction module, for proofreading and correct the temperature information of described thermal infrared imagery data; And
Read module, for reading the temperature information of described thermal infrared imagery data, the temperature information after reading is as surface temperature information.
8. definite device of coalfield according to claim 6 flame range, is characterized in that,
Described second acquisition unit comprises: display module, and for adopting different colors to show that different temperatures interval is to distinguish the temperature of the high temperature exceptions area of described target area,
Described determining unit comprises: the first determination module, for determining maximum temperature value and/or the minimum temperature value of described high temperature exceptions area; The second determination module, determines the position of the coal fire combustion centre of described target area for the maximum temperature value by described high temperature exceptions area and/or described minimum temperature value.
9. definite device of coalfield according to claim 6 flame range, is characterized in that,
Described second acquisition unit comprises: judge module, for judging the temperature value of the atural object that described thermal infrared imagery data show; The 3rd determination module, for determining the scope of the temperature value of described atural object,
Described determining unit is also determined the position of described coal fire combustion centre for the scope of the temperature value by described atural object,
Described delineation unit comprises: acquisition module, for obtaining the information of historical coalfield flame range; The first correction module, the border for the historical coalfield of the position correction by described coal fire combustion centre flame range, forms described current coalfield flame range.
10. definite device of coalfield according to claim 6 flame range, is characterized in that, described determining device also comprises:
The 3rd acquiring unit, after the surface temperature information for target area described in the thermal infrared imagery data acquisition by described target area, obtains aviation spontaneous combustion cromogram;
Correcting unit, for carrying out partial correction according to the discernible atural object of described aviation spontaneous combustion cromogram to the thermal infrared imagery of described target area; And
Generation unit, for the thermal infrared imagery using the image after partial correction as described target area.
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