CN102567983A - Determining method for positions of monitored targets in instant infrared chart and application - Google Patents
Determining method for positions of monitored targets in instant infrared chart and application Download PDFInfo
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Abstract
The invention belongs to the technical field of infrared monitoring, relates to the panoramic equipment working temperature monitoring technology based on infrared, and specifically relates to a determining method for positions of monitored targets in an instant infrared chart. The method comprises the steps of: carrying out position registry on the instant infrared chart in an infrared panorama to obtain the corresponding region of the instant infrared chart in the infrared panorama, wherein the infrared panorama is synthesized in advance and the position of each monitored target is marked in the infrared panorama; and then determining the positions of the monitored targets in the instant infrared chart according to the monitored targets contained in the corresponding region and the relative position of the targets in the corresponding region. According to the method, the dependence of the position determining of the monitored targets on the presetting bit parameter and turning parameter of a cradle head device is eliminated, thus the precision for determining the positions of the monitored targets in the instant infrared chart is effectively improved, and a solid foundation is laid for realizing high-precision monitoring on the equipment temperature by an online infrared monitoring system.
Description
Technical field
The invention belongs to the infrared monitoring technical field, relate to based on ultrared panorama temperature monitoring technology, specifically, is to disclose a kind of definite method that is applied to based on monitored target location in the instant infrared chart in the ultrared panorama temperature monitoring system.
Technical background
According to the thermal radiation phenomena of object, utilize infra-red thermal imaging Equipment Inspection object temperature, with the technology of realization, be widely used in various productions and the life the monitoring of the temperature of object.At present; Product based on ultrared temperature monitoring technology mainly is divided into two big types, and one type is portable thermal imaging temperature testing equipment, needs hand-held to detect measured target; Analysis and the diagnosis then the heat picture that detects acquisition carried out on background PC computer; Belong to the monitoring of discontinuity, its shortcoming is to monitor with the diagnosis of nature of trouble in real time etc. to the heat distribution field, and this tends to cause keep watch on incurs loss through delay and cause bigger property loss.Use portable thermal imaging temperature testing equipment in addition, need operating personnel frequently to travel to and fro between monitored scene and background PC computer location, cause operator's fatigue easily or cause diagnosing problems such as untimely.Another kind of is online infrared supervisory system, and this system comprises online thermal infrared imager and controls the back bench control system that online thermal infrared imager is gathered infrared thermal imagery and the infrared thermal imagery of gathering is stored, analyzes, diagnosed.Online infrared supervisory system is the achievement that artificial intelligence, on-line monitoring technique, infrared thermal imaging technique further develop, and it makes at charging equipment under situation about not having a power failure, and it is carried out automatic safe detect and become possibility.Be particularly useful for working conditions such as repair based on condition of component, safe operation monitoring and the unattended operation transformer station monitoring of high voltage installation.New " charging equipment infrared diagnostics using standard " is also specially to having proposed requirement (8.6 use thermal infrared imager continuous detecting equipment under test in a period of time, the facilities for observation temperature is with the method for factors vary such as load, time) at the line style thermal imaging system.
When using online infrared supervisory system, if the scope of area to be monitored less than the camera lens visual angle of thermal infrared imager, then the infrared thermography camera lens need not to rotate, and can thermal infrared imager fixedly be assemblied in correct position and get final product.But because online infrared supervisory system cost is higher,, generally use it in the large-scale overall view monitoring,, comprehensive monitoring is constantly carried out in the monitoring area through rotating the mode of thermal infrared imager camera lens in order to improve the utilization factor of supervisory system.At this moment, thermal infrared imager then need be installed on the cradle head device, is cruised through cradle head device control thermal infrared imager by the back bench control system and scans whole monitoring area.In thermal infrared imager cruises scanning process, write down the real-time temperature information of target to be monitored in each instant thermography, finally realize overall view monitoring.Obviously, when using online infrared supervisory system that extensive area is carried out overall view monitoring, confirming the position of target to be monitored in the instant thermography, is the key point that realizes the device temperature monitoring.
At present, confirm that the method that adopt the position of target to be monitored in the instant thermography mainly contains two kinds.
First method is: at first with certain some coordinate system as true origin structure monitoring area in the monitoring area, confirm each monitoring objective coordinate parameters in the coordinate system of monitoring area; The thermal infrared imager cradle head device accurately is installed then, is made a certain preferred coordinate in the accurate corresponding monitoring area of the presetting bit coordinate system of cradle head device; Measure The Cloud Terrace corner and monitoring area coordinate system coordinate corresponding relation; The Cloud Terrace corner parameter during according to instant thermography capture and monitoring objective coordinate parameters in the coordinate system of monitoring area calculates and obtains to comprise in the instant thermography which monitoring objective and the correspondence position in instant thermography thereof.
Second method is: all capture angles that at first preestablish thermal infrared imager; Then one by one in thermal infrared imager manual position of demarcating target to be monitored from the thermography that each capture angle obtains.When system moved, thermal infrared imager write down the operational temperature information of target to be monitored in each instant thermography then only in predefined each capture angle circulation capture.
Analyzing above two kinds of methods is not difficult to draw; Confirm that the method for the position of target to be monitored in the instant thermography all depends on the presetting bit parameter and the corner parameter of cradle head device for existing two kinds, the precision that the target to be monitored position is confirmed depends on the corner accuracy of cradle head device.Yet the rotation of cradle head device is realized by the motor driving machine gear train assembly; The driving error of gear train and the fluctuation of ac frequency variation cause the presetting bit precision and the corner accuracy of cradle head device limited, and general cradle head preset positions precision parameter all is smaller or equal to 1.5 °.Such error can cause when calling presetting bit parameter and corner parameter apart from the equipment outside 20 meters of the thermal infrared imagers, producing 0.5 meter error on the locus at image, so obtains the equipment work temperature and will there be bigger deviation in the real working temperature of equipment.This shows,, further improve the monitoring precision and be subjected to the serious restriction that is difficult to further improve this technical bottleneck of cradle head device precision for online infrared supervisory system based on above two kinds of methods.
Therefore, how to reduce or performance and the precision of avoiding The Cloud Terrace to the influence of testing result, become one and technical matters to be solved.
Summary of the invention
The objective of the invention is to solve the deficiency of the online infrared supervisory system of tradition on monitored target localization, a kind of method that can in instant infrared chart, accurately locate monitored target is provided.A kind of supervisory system based on accurate positioning method of the present invention is provided simultaneously, is intended to improve the Practical Performance and the fiduciary level of monitoring system.
To achieve these goals, the invention discloses definite method of monitored target location in a kind of instant infrared chart, this method comprises the steps:
A. the infrared panorama figure that synthesizes the area to be monitored in advance;
B. in infrared panorama figure, demarcate the position of each monitored target;
C. instant infrared chart is carried out position registration in infrared panorama figure, draw the corresponding region of instant infrared chart in infrared panorama figure;
D. according to the positional information of each monitored target of demarcating in advance, confirm to be included in monitored target and the relative position of this target in this corresponding region in this corresponding region;
E. the position of monitored target in the instant infrared chart of the relative position of this target in this corresponding region.
The present invention is through carrying out the method for position registration in the infrared panorama figure of area to be monitored to instant infrared chart; Broken away from the dependence of confirming of target to be monitored position to the presetting bit parameter and the corner parameter of cradle head device; Avoided being difficult to further improve this technical bottleneck of cradle head device precision cleverly; Can effectively improve the precision of in instant infrared chart, confirming the target to be monitored position, the high precision monitor of device temperature laid a solid foundation for realizing online infrared supervisory system.
In the method for the invention, can synthesize the infrared panorama figure of area to be monitored through following dual mode at least:
First kind of mode is pure manual mode; Comprise: at first manually control cradle head device and rotate capture; Obtain the sequence infrared thermography that comprises whole targets to be monitored in the monitoring area, manually splice the sequence infrared thermography then, constitute the infrared panorama figure of monitoring area.
The second way is that semi-intelligent is combined to mode; Comprise: at first set the horizontal capture initial angle, next capture drift angle of thermal infrared imager, the vertical drift angle of entering a new line; Wherein next capture drift angle is less than thermal infrared imager horizontal field of view angle, and the drift angle of vertically entering a new line is less than infrared thermal imagery instrument vertical field of view angle; Move the thermal infrared imager whole monitoring area of lining by line scan then, obtain and comprise in the monitoring area all sequence infrared thermographies of targets to be monitored; Last according to the superposition boundary that faces Infrared Thermogram mutually, through splicing by hand or utilizing the locus method for registering to splice the sequence infrared thermography automatically, constitute the infrared panorama figure of monitoring area.
In infrared panorama figure, each monitored target is carried out location position and can adopt following dual mode: the central point of one of which, the monitored target of demarcation.Two, frame selects monitored target, writes down the four angular coordinate and/or the centre coordinate of this frame favored area.
In the method for the invention, can instant infrared chart be carried out position registration in infrared panorama figure, also can carry out position registration automatically through the back bench control system through manual mode.
Back bench control system carries out position registration automatically and comprises several different methods; Wherein true a kind of method of seeing is; The method of really connecting global search calculates view data and the instant the highest image-region of infrared chart similarity, and this zone is the corresponding region of instant infrared chart in infrared panorama figure.But the shortcoming of this method is; 1, the data computation amount is huge, and higher to the background computer requirement, system responses is relatively slow; 2, when the fluctuation of target to be monitored working temperature is big, cause the position registration distortion easily, monitoring temperature lost efficacy.
In order to overcome above-mentioned shortcoming, the present invention also provides two kinds of improved position registration methods:
First kind is reference point mapping method for registering; This method is a benchmark image with the infrared panorama figure of monitoring area; With the instant infrared chart of current collection for treating registering images; Treating to select a plurality of characteristic temperature points on the registering images,, in benchmark image, find corresponding characteristic temperature point then like local maximum temperature point.At last so that certain is that reference point matees instant infrared chart in infrared panorama figure a bit in the characteristic temperature point.This mode is calculated with the similarity of the data block among a small circle around the characteristic temperature point and is replaced instant infrared chart all data similarity to calculate; Can reduce operand significantly; Help improving the response speed of system; Choosing of a plurality of characteristic temperature points also can effectively avoid the target to be monitored working temperature to fluctuate widely to the influence of position registration in addition.For this method for registering, increase the quantity of characteristic temperature point, can reduce the crash rate of reference point mapping registration; The raising system is in the suitable ability of various extreme occasions; But also can increase the operand of system simultaneously, reduce the response speed of system, therefore; According to the difference of applicable situation, should make suitable selection.
Second kind of improved method for registering is based on the position registration method of directional scanning; Promptly presetting bit parameter and the corner parameter according to cradle head device is limited to the corresponding region of instant infrared chart in infrared panorama figure in the small range; Calculate through similarity among a small circle at this then, confirm the accurate correspondence position of instant infrared chart in infrared panorama figure.Can reduce operand significantly equally like this, effectively improve the response speed of system.
Above-mentioned second kind of improved position registration method can be applied in first kind of improved method for registering too; Specifically; Promptly instant infrared chart is carried out pre-determined bit in infrared panorama figure, and then carry out position correction according to the reference point mapping techniques according to the presetting bit parameter and the corner parameter of cradle head device.
Definite method based on monitored target location in the above instant infrared chart; The present invention has further proposed a kind of high precision whole audience scape equipment work temperature monitoring method; This method adopts the TIR sensing apparatus to cruise and scans whole area to be monitored, according to the TIR data that scan each monitored target in the area to be monitored that obtains, and according to TIR intensity and temperature relation; Calculate the real-time temperature that generates each monitored target, comprise that specifically step is following:
A. scan whole area to be monitored with the TIR sensing apparatus, and the infrared panorama figure of the synthetic area to be monitored of whole infrared datas of the area to be monitored that obtains according to scanning.
B. in the infrared panorama figure of area to be monitored, demarcate the position of each monitored target, and with the positional information data-in storehouse of each monitored target among the infrared panorama figure.
C. the TIR sensing apparatus is according to preestablishing automatic cruising scanning area to be monitored; Or when scanning a certain appointed area according to current order; Whenever after obtaining the instant infrared chart of a width of cloth; Instant infrared chart is carried out position registration in infrared panorama figure,, confirm the accurate position of this target in instant thermal map according to monitored target of demarcating in this instant infrared chart corresponding region in infrared panorama figure and the relative position of this target in this corresponding region.Record is comprised in the instant infrared data of the monitored target in the instant thermal map, and then calculates the real-time temperature of this target, and the data-in storehouse.
D. basis preestablishes or the temperature data of current order through writing down in the display device video data storehouse, or the real-time temperature data in the instant infrared chart.
The present invention also further proposed a kind of its in the whole audience scape equipment work temperature analysis monitoring system of above-mentioned high precision whole audience scape equipment work temperature monitoring method; Be used to monitor the real-time temperature and the temperature variation thereof of interior each the monitored target of scene on a large scale, its composition comprises:
A. thermal infrared imager is used to gather the infrared chart of monitoring area, and infrared chart is sent to processor;
B. drive unit is used to drive hot red line sniffer and rotates, and to change the visual field of TIR sniffer, makes its visual field progressively cover whole area to be monitored;
C. controller unit is electrically connected with drive unit, and according to preestablishing or user's current order is sent corresponding control signal to drive unit, the indication drive unit drives the TIR sniffer and rotates special angle;
D. processor unit receives, handles the electric signal that the TIR sniffer sends, and calculates temperature information according to this electric signal, and exports demonstration or deposit storer in;
E. memory cell, be used to store the area to be monitored infrared panorama figure and each monitored target go through official's temperature data.
F. the human-computer interaction interface unit comprises display device and message input device.
Description of drawings
Below will the present invention be described in more detail with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 has shown a kind of device according to configuration of the present invention.
Fig. 2 logical expressions the function of the program of inventing.
Fig. 3 has shown the infrared chart that 12 width of cloth are taken separately.
Fig. 4 has shown the process of a width of cloth large scale thermal map that obtains after the infrared chart that 12 width of cloth are taken separately synthesizes.
Fig. 5 has represented that two width of cloth space bit are equipped with the synoptic diagram that overlapping infrared chart carries out the locus registration.
Fig. 6 is in the process of infrared panorama figure marked equipment.
The operation normality sub-screen display effect figure of Fig. 7 system.
Fig. 8 monitors the temperature changing curve diagram that obtains in the instance.
What Fig. 9 showed is the design sketch with the synthetic panorama infrared chart of about 120 width of cloth infrared thermal imageries.
Figure 10 will treat that registering images is divided into 4 parts the synoptic diagram of cutting apart.
Embodiment
Below in conjunction with a kind of application example of the present invention the present invention is done further to explain and explanation.
Fig. 1 has showed a kind of application example of definite method of monitored target location in the instant infrared chart of the present invention; Be a kind of whole audience scape equipment work temperature analysis monitoring system; The thermal infrared imager 3 that this system comprises the control and treatment center and is connected to this control and treatment center through data line; Said thermal infrared imager 3 is installed in the protective cover 1, and said protective cover 1 is installed in one and can receives on the cradle head device 5 that computer control rotates.Said control and treatment center is by system's control and management software indication work; At least comprise a processing unit and a storage unit 9; This system also comprises input media; Its form is a keyboard 11 and mouse 23 that is connected to the control and treatment center, and this system can also comprise a display 7 that is connected to the control and treatment center equally.Said storage unit 9 comprises a memory storage 13, wherein comprises a plurality of data capsules 21, and this data capsule 21 is to be transferred in the memory storage 13 through data line by thermal infrared imager 3.
Each major part effect is following in the above-mentioned whole audience scape equipment work temperature analysis monitoring system:
Thermal imaging system protective cover 1: the online infrared thermography 3 of protection under outdoor work environment.
Mounting bracket 2: be used for fixing whole filming apparatus in the fixed position, working site.
Online infrared thermography 3: accept system control and management control of software, be used to gather the infrared thermal imagery of monitoring area, and infrared thermal imagery is stored in the computing machine.
The Cloud Terrace 5: accept system control and management control of software, make the online infrared thermography 3 that is mounted thereon, rotate arbitrarily in the scope of vertical (0-90 degree) at level (0-360 degree).
System's control and management software: at least two width of cloth sequence infrared thermal imagerys that 1, use online infrared thermography 3 to gather; Then 2, adopted a kind of infrared panorama drawing generating method to carry out manual space Matching Alignment based on sequence image; Or adopt a kind of infrared image intelligent identification technology that sequence image is carried out semi-automatic space Matching Alignment; The wide visual angle that processing back 3, synthetic at least one width of cloth comprise each image sequence information is scene, complete, the new infrared panorama image of high-resolution; 4, on this infrared panorama figure, proceed to the device location sign back of lacking one and form the working equipment tabulation of at least one; On above-mentioned data basis; 5, system patrols and examines in the process at least one width of cloth infrared chart of gathering arbitrarily automatically through the infrared image intelligent identification technology, obtains the exact position and the working temperature of all equipment that relate among this figure.
Fig. 2 has showed the set-up procedure of a kind of whole audience scape equipment work temperature analysis monitoring system shown in Figure 1 and the course of work of commencement of commercial operation.Mainly comprise 8 steps, specific as follows:
(2.1) The Cloud Terrace 5 is turned to reference position (for example: level 0 degree, vertical 0 degree).
(2.2) at least one width of cloth infrared chart of shooting reference position stores in the computing machine, and the horizontal level with The Cloud Terrace 5 turns an angle then, gathers at least one width of cloth infrared chart again, stores in the computing machine.Repeat said process up to collecting the horizontal infrared chart that is necessary on this horizontal level.
(2.3) horizontal level with The Cloud Terrace 5 turns to reference position, and the upright position rotates to be taken at least one width of cloth infrared chart behind the certain angle and store in the computing machine, then according to (2.2) process with the horizontal infrared chart that is necessary on this horizontal level.
(2.4) repeat (2.3) process, gather the infrared thermal-image data that is necessary.Obtain a cover sequence infrared thermal map, Fig. 3 has shown a cover 12 width of cloth sequence infrared thermal maps.
(2.5) using system control and management software carries out the locus registration with at least two width of cloth sequence infrared thermal maps of said process collection, sets up infrared panorama figure, and what Fig. 4 showed is the large scale panorama infrared chart that is spliced with 12 width of cloth sequence infrared thermal maps shown in Figure 3.What accompanying drawing 9 was showed is the power plant's panorama infrared chart that generates behind about 120 width of cloth sequence infrared thermal map registrations.
(2.6) using system control and management software carries out device identification on this infrared panorama figure, generates the device location parameter, and the running parameter tables of data.
(2.7) system's control and management software is in automatic cruising or artificial any time of cruising; The infrared chart that collects carries out the locus coupling through the infrared image intelligent identification technology in infrared panorama figure; Obtain this figure relative position in infrared panorama figure; In the device location parameter that generates according to (2.6) function, and the running parameter tables of data obtains all devices that comprised on this figure.Accompanying drawing 7 has shown the running status of system's control and management software.
(2.8) according to what (2.7) obtained location parameter and infrared chart data are set, calculate the accurate temperature of this equipment, and be recorded into database.Accompanying drawing 8 has shown the temperature changing curve diagram of back certain monitoring equipment of a period of time operation.
In the above-mentioned steps (2.2), the angle calculation formula that The Cloud Terrace horizontally rotates at every turn is following:
Horizontally rotate angle f=infrared thermal imagery instrument horizontal field of view angle-face mutually infrared chart lateral overlap angle f1
The numerical value of f1 is between (0.1-10) degree
In the above-mentioned steps (2.3), the angle calculation formula that The Cloud Terrace rotates at every turn vertically downward is following:
Vertical rotation angle f '=infrared thermal imagery instrument vertical field of view angle-face mutually infrared chart longitudinal overlap angle f2
The numerical value of f2 is between (0.1-8) degree
With reference to Fig. 5, the method for synthetic infrared panorama figure in the above-mentioned steps (2.5) and adjustment ambient temperature comprises following steps:
(4.1) read in first width of cloth at least one width of cloth sequence infrared thermal-image data, data are carried out statistics with histogram, obtain effective lower level of this width of cloth infrared thermal-image data (GMIN1) and boundary level (GMAX1).Calculate maximum temperature in this infrared thermal-image data (TMAX1) and end temperature (TMIN1).
(4.2) read in all data in the sequence infrared thermal-image data one by one, repeating step a obtains these objects lower level (GMINn), boundary level (GMAXn), maximum temperature (TMAXn), end temperature (TMINn) separately.
(4.4) utilize lower level (GMINn), the boundary level (GMAXn) of infrared thermal-image data) one by one the conversion of the infrared thermal-image data in the sequence is generated 256 grades of gray level images.Conversion formula is following:
y＝(BYTE)(((x-GMINn)*1.0)*255.0/(GMAXn-GMINn))
(4.5) adopt the mode of total man worker's aligning or semi-automatic aligning that 256 grades the gray level image that (4.4) generate is carried out position alignment, splicing infrared panorama figure.
(4.6) with the true origin of the upper left corner location positioning infrared panorama figure of first width of cloth figure in the sequence infrared thermal-image data, write down and store the relative position of the position, the upper left corner (true origin) of relative first width of cloth figure in position, the every other sequence infrared thermal-image data upper left corner.
(4.7) statistical computation obtains the maximum temperature (TtotalMax) in all sequences infrared thermal-image data, minimum temperature (TtotalMin).
TtotalMax＝MAX(TMAX1，TMAX2，……TMAXn)；
TtotalMin＝MAX(TMIN1，TMIN2，……TMINn)；
(4.8) according to maximum temperature (TtotalMax), minimum temperature (TtotalMin), the corresponding with it maximum level (GTMAXn) and minimum level (GTMINn) of every width of cloth infrared thermal-image data in the sequence of calculation infrared thermal-image data.
GTMAXn＝fn(TtotalMax)
GTMINn＝fn(TtotalMin)
Fn ()=be the computing formula that the corresponding temperature transition of every width of cloth infrared data becomes grey level.
(4.9) utilize maximum level (GTMAXn), the minimum level (GTMINn) of the infrared thermal-image data that (4.8) calculate one by one the conversion of the infrared thermal-image data in the sequence to be generated 256 grades of gray level images.Conversion formula is following:
y＝(BYTE)(((x-GTMINn)*1.0)*255.0/(GTMAXn-GTMINn))；
(4.10) 256 grades of grayscale image sequence that (4.9) process generated, the station-keeping data of respectively scheming that generates according to (4.6) process synthesizes, and just can generate the consistent infrared panorama figure of a width of cloth ambient temperature, and is as shown in Figure 9.
With reference to Fig. 6, the monitored target of in infrared panorama figure, demarcating described in the above-mentioned steps (2.6) comprises the steps:
(5.1) with the position of mode each target to be monitored of mark in infrared panorama figure of frame choosing;
(5.2) write down and store the position of corresponding point in infrared panorama figure, the square frame upper left corner of a institute's mark in the step, and write down the length and the width of this square frame;
(5.3) data such as the name of the square frame of institute's mark, alarm temperature during record and storage a go on foot.
Infrared image intelligent identification technology described in the above-mentioned steps (2.7) is meant: the reference point mapping techniques that two width of cloth infrared charts is carried out the space Matching Alignment.Specifically comprise the steps:
(6.1) be benchmark image S at first, for treating registering images,, in benchmark image, find corresponding characteristic temperature point then treating to find the characteristic temperature point on the registering images with second images with infrared panorama figure.
(6.2) be that W highly is that the image of H is an example with width shown in Figure 10; In treating registering images, select the characteristic temperature point methods to be: will treat that registering images is divided into 4 parts; In every partial images, search out the temperature peak respectively, will find the temperature peak to confirm as the temperature profile point: S1, S2, S3, S4.It is shown in figure 10 to cut apart signal.
(6.3) be the center with the temperature profile point, in treating the registering images data, choosing length width all is the data computation basis of the infrared data piece T of M as the calculating similarity measurement, and wherein the value of M is 21 pixels.
(6.4) in benchmark image S, adopt the method for global search to calculate and the highest data block of T data block similarity, computing formula is following:
S wherein
IjBe illustrated in the benchmark image with coordinate (i, j) position is that the length width at center all is the infrared data piece of M, wherein the span of i is (M/2) to (W-M/2); The span of j is (M/2) to (H-M/2).
(6.5) add up all R (i, the maximal value in j), this numerical value (i is exactly a benchmark image and treat the location point that the characteristic temperature point is complementary in the registering images j).
(6.7) can and treat that registering images obtains 4 couples of location point S1 that are complementary, T1, S2 from benchmark image according to the process of (6.2) to (6.5); T2, S3, T3; S4; Whether T4 calculates S1 and divides and be clipped to distance that S2, S3, S4 order and divide with T1 and be clipped to distance error that T2, T3, T4 order in 3 pixels, if confirm then confirm that the S1 point is benchmark image and the Matching Alignment point of treating registering images.
A kind of explanation that above content is just made the present invention; But not the restriction that the present invention is carried out; Main points of the present invention are: after obtaining instant infrared chart, be not the information of confirming target to be monitored in the infrared chart according to the presetting bit parameter and the capture angle parameter of thermal infrared imager.But adopt the image intelligent recognition technology, instant infrared chart is had among the infrared panorama figure of target to be monitored information in synthetic and demarcation in advance carry out independently position registration.To confirm the accurate position of target to be monitored in this instant infrared chart.All innovation and creation based on these main points all should fall in protection scope of the present invention.
Claims (9)
1. definite method of monitored target location in the instant infrared chart, this method is applied to it is characterized in that based in the ultrared full equipment work temperature monitoring system, comprises the steps:
A. the infrared panorama figure that synthesizes the area to be monitored in advance;
B. in infrared panorama figure, demarcate the position of each monitored target;
C. instant infrared chart is carried out position registration in infrared panorama figure, draw the corresponding region of instant infrared chart in infrared panorama figure;
D. according to the positional information of each monitored target of demarcating in advance, confirm to be included in monitored target and the relative position of this monitored target in this corresponding region in this corresponding region;
E. the position of monitored target in the instant infrared chart of the relative position of this target in this corresponding region.
2. definite method of monitored target location in the instant infrared chart according to claim 1; It is characterized in that; The infrared panorama figure synthetic method of area to be monitored is: at first use the thermal infrared imager collection to cover the overlapping sequence infrared thermography of adjacent infrared chart segment boundary of whole area to be monitored; According to the superposition boundary splicing sequence infrared thermography of adjacent Infrared Thermogram, constitute the infrared panorama figure of monitoring area then.
3. definite method of monitored target location in the instant infrared chart according to claim 2; It is characterized in that; When synthesizing the infrared panorama figure of area to be monitored; At first set the horizontal capture start bit, next capture drift angle of thermal infrared imager, the vertical drift angle of entering a new line, wherein next capture drift angle is less than thermal infrared imager horizontal field of view angle, and the drift angle of vertically entering a new line is less than infrared thermal imagery instrument vertical field of view angle; Move the thermal infrared imager whole monitoring area of lining by line scan then, obtain and comprise in the monitoring area all sequence infrared thermographies of targets to be monitored; According to the superposition boundary of adjacent Infrared Thermogram,, constitute the infrared panorama figure of monitoring area at last through splicing by hand or utilizing the locus method for registering to splice the sequence infrared thermography automatically.
4. definite method of monitored target location is characterized in that in the instant infrared chart according to claim 2, and splicing sequence infrared thermography comprises the steps:
A. read the data of at least one width of cloth Infrared Thermogram in the sequence infrared thermography; Data are carried out statistics with histogram; Obtain effective lower level of this width of cloth Infrared Thermogram (GMIN1) and boundary level (GMAX1), calculate maximum temperature in this Infrared Thermogram (TMAX1) and end temperature (TMIN1);
B. read in all data in the sequence infrared thermal-image data one by one, repeating step a obtains these objects lower level (GMINn), boundary level (GMAXn), maximum temperature (TMAXn), end temperature (TMINn) separately;
C. utilize lower level (GMINn), the boundary level (GMAXn) of infrared thermal-image data) one by one the conversion of the infrared thermal-image data in the sequence is generated 256 grades of gray level images, conversion formula is following:
y＝(BYTE)(((x-GMINn)*1.0)*255.0/(GMAXn-GMINn))
D. adopt the mode of total man worker's aligning or semi-automatic aligning that 256 grades the gray level image that the c step generates is carried out position alignment, splicing infrared panorama figure.
5. definite method of monitored target location is characterized in that in the instant infrared chart according to claim 4, and the adjustment ambient temperature comprises the steps: in the splicing infrared panorama figure process
A. the position, the upper left corner of first width of cloth figure in the sequence infrared thermography is decided to be the true origin of infrared panorama figure, writes down and store the relative position of the position, the upper left corner (true origin) of relative first width of cloth figure in position, the every other sequence infrared thermal-image data upper left corner;
B. statistical computation obtains the maximum temperature (TtotalMax) in all sequences infrared thermal-image data, minimum temperature (TtotalMin);
TtotalMax＝MAX(TMAX1，TMAX2，……TMAXn)；
TtotalMin＝MAX(TMIN1，TMIN2，……TMINn)；
C. according to maximum temperature (TtotalMax), minimum temperature (TtotalMin), the corresponding with it maximum level (GTMAXn) and minimum level (GTMINn) of every width of cloth infrared thermal-image data in the sequence of calculation infrared thermal-image data;
GTMAXn＝fn(TtotalMax)；
GTMINn＝fn(TtotalMin)；
Fn ()=be the computing formula that the corresponding temperature transition of every width of cloth infrared data becomes grey level.
D. utilize maximum level (GTMAXn), the minimum level (GTMINn) of the infrared thermal-image data that aforementioned calculation obtains one by one the conversion of the infrared thermal-image data in the sequence to be generated 256 grades of gray level images.Conversion formula is following:
y＝(BYTE)(((x-GTMINn)*1.0)*255.0/(GTMAXn-GTMINn))；
E. 256 grades of grayscale image sequence that said process generated are synthesized according to the station-keeping data of respectively scheming that generates in a step, just can generate the consistent infrared panorama figure of a width of cloth ambient temperature.
6. definite method of monitored target location is characterized in that in the instant infrared chart according to claim 1, in infrared panorama figure, demarcates monitored target and comprises the steps:
A. with the position of mode each target to be monitored of mark in infrared panorama figure of frame choosing;
B. write down and store the position of corresponding point in infrared panorama figure, the square frame upper left corner of a institute's mark in the step, and write down the length and the width of this square frame;
C. write down and store the data such as name, alarm temperature of the square frame of institute's mark in a step.
7. definite method of monitored target location is characterized in that in the instant infrared chart according to claim 1, and the instant position registration of infrared chart in infrared panorama figure comprises the steps:
A. be benchmark image S at first with infrared panorama figure, with the instant infrared chart of current collection for treating registering images;
B. will treat that registering images is divided into 4 parts, in every partial images, search out the temperature peak respectively, will find the temperature peak to confirm as the temperature profile point: S1, S2, S3, S4;
C. be the center with the temperature profile point, in treating the registering images data, choosing length width all is the data computation basis of the infrared data piece T of M as the calculating similarity measurement, and wherein the value of M all is 21 pixels;
D. in benchmark image S, adopt the method for global search to calculate and the highest data block of T data block similarity, computing formula is following:
S wherein
IjBe illustrated in the benchmark image with coordinate (i, j) position is that the length width at center all is the infrared data piece of M, wherein the span of i is (M/2) to (W-M/2), the span of j be that (M/2) arrives (H-M/2);
E. add up all R (i, the maximal value in j), this numerical value (i, j) be exactly on the benchmark image with treat the location point that the characteristic temperature point is complementary in the registering images, be respectively T1, T2, T3, T4.
F. calculate S1 and divide and to be clipped to distance that S2, S3, S4 order and whether to divide and be clipped to distance error that T2, T3, T4 order in 3 pixels, if meet then confirm that the S1 point is benchmark image and the Matching Alignment point of treating registering images with T1.
8. high precision whole audience scape working temperature monitoring method based on the said method of claim 1; This method adopts the TIR sensing apparatus to cruise and scans whole area to be monitored; According to the TIR data that scan each monitored target in the area to be monitored that obtains, and, calculate the real-time temperature that generates each monitored target according to TIR intensity and temperature relation; It is characterized in that this method comprises the steps:
A. scan whole area to be monitored with the TIR sensing apparatus, and the infrared panorama figure of the synthetic area to be monitored of whole infrared datas of the area to be monitored that obtains according to scanning.
B. in the infrared panorama figure of area to be monitored, demarcate the position of each monitored target, and with the positional information data-in storehouse of each monitored target among the infrared panorama figure.
C. the TIR sensing apparatus is according to preestablishing automatic cruising scanning area to be monitored; Or when scanning a certain appointed area according to current order; Whenever after obtaining the instant infrared chart of a width of cloth; Instant infrared chart is carried out position registration in infrared panorama figure,, confirm the accurate position of this target in instant thermal map according to monitored target of demarcating in this instant infrared chart corresponding region in infrared panorama figure and the relative position of this target in this corresponding region.Record is comprised in the instant infrared data of the monitored target in the instant thermal map, and then calculates the real-time temperature of this target, and the data-in storehouse.
D. basis preestablishes or the temperature data of current order through writing down in the display device video data storehouse, or the real-time temperature data in the instant infrared chart.
9. whole audience scape equipment work temperature analysis monitoring system based on the said method of claim 8 is used to monitor the real-time temperature and the temperature variation thereof of each monitored target in the scene, it is characterized in that, comprising:
A. thermal infrared imager is used to gather the infrared chart of monitoring area, and infrared chart is sent to processor;
B. drive unit is used to drive hot red line sniffer and rotates, and to change the visual field of TIR sniffer, makes its visual field progressively cover whole area to be monitored;
C. controller is electrically connected with drive unit, and according to preestablishing or user's current order is sent corresponding control signal to drive unit, the indication drive unit drives the TIR sniffer and rotates special angle;
D. processor receives, handles the electric signal that the TIR sniffer sends, and calculates temperature information according to this electric signal, and exports demonstration or deposit storer in;
E. storer, be used to store the area to be monitored infrared panorama figure and each monitored target go through official's temperature data;
F. human-computer interaction interface comprises display device and message input device.
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