CN104251738B - A kind of helmet-type infrared radiation thermometer and its method - Google Patents
A kind of helmet-type infrared radiation thermometer and its method Download PDFInfo
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Abstract
The invention discloses a kind of helmet-type infrared radiation thermometer and its methods, the temperature measurer includes the helmet and the detector being arranged on the helmet, detector driving circuit, signal-processing board, power panel, SD card storage circuit, LCD eyepieces, battery and store button, wherein detector is arranged immediately ahead of the helmet, and LCD eyepieces and detector are coaxial；Thermometric step is：General supply is provided for power panel by battery, detector driving circuit configures detector, and detector starts to acquire the realtime graphic initial data of target；The realtime graphic initial data that detector driving circuit pick-up probe is sent, and signal-processing board is sent it to, Digital Image Processing is carried out, the temperature information image of target is obtained；The display chip of signal-processing board exports temperature information image to LCD eyepieces with VGA formats.Work efficiency is high, easy to operate for helmet-type infrared radiation thermometer of the present invention, can realize and carry out thermometric and imaging precisely in real time to tested target.
Description
Technical field
The invention belongs to infrared measurement of temperature and infrared thermal imaging technique field, especially a kind of helmet-type infrared radiation thermometer and
Its method.
Background technology
Currently, in branch company of national grid subordinate each province, the patrol worker of various regions power transformation base station is made mainly with people
What power carried out, the content of this inspection work includes mainly checking working condition, the inert gas delivery tube of large-scale power transformation unit
The leakage situation etc. in road.In practical inspection operation, the maximum problem encountered exactly accurately, timely can not be positioned and be found
Potential problem.If it is abnormal without significantly showing that potential working condition occurs in a work unit,
Operation maintenance personnel can not find that common polling period is monthly in time during when secondary inspection, that is to say, that when
Some unit when something goes wrong, could be sent out when having prodigious probability that this problem can be remained to next inspection by operation maintenance personnel
It is existing.For the equipment of power transformation unit high-pressure work strong in this way, there are prodigious danger for these potential problems.Therefore, it is necessary to
It designs and produces a portable instrument to allow operation maintenance personnel timely to find this potential problem and solution.
Infrared measurement of temperature is to apply a kind of very extensive monitoring mode at present, by the radiation level of measured target itself,
Infrared temperature measurement system can automatically identify and calculate the accurate temperature of measured target.During the inspection of electric system,
Very intuitive patrol officer can accurately be allowed to find the abnormal operation for being detected unit in the way of infrared measurement of temperature, to
Corresponding processing is made for it.Currently, the infrared measurement of temperature pattern of substation is that infrared radiation thermometer carries out in a handheld, in this way
Inspection thermometric pattern there are following significant drawbacks：
1. heavy workload, efficiency are low：Due to using portable equipment, this just needs operation maintenance personnel necessary during inspection
Temperature measurer is held using a hand, causing can only be with other operation during singlehanded progress O＆M, during thermometric, fortune
Dimension personnel are difficult to carry or use other instruments simultaneously, constrain significantly and obtain tested target multidimensional state letter using other instruments
The possibility of breath；
2. being easy to miss inspection, managing and being equipped with and is of high cost：Since operation maintenance personnel holds temperature measurer, lead to the region of temperature measurer detection
It is being observed with operation maintenance personnel human eye or the region observed is needed not to be consistent quickly, observation is wanted for operation maintenance personnel
Region need to be highlighted by way of manual search in the visual field of temperature measurer, seriously affected equipment deficiency recall rate
And O＆M efficiency；
3. handheld thermometer equipment cost is excessively high, it is not easy to extensively using popularization, and portable equipment power consumption is larger,
The battery that must be equipped with large capacity when in use leads to complete equipment heavier-weight, and volume is larger, is not easy to operation maintenance personnel and takes
Band.
Invention content
The purpose of the present invention is to provide a kind of helmet-type infrared radiation thermometers that work efficiency is high, at low cost, easy to operate
And its method, it realizes and thermometric and imaging precisely in real time is carried out to tested target.
Realize that the technical solution of the object of the invention is：A kind of helmet-type infrared radiation thermometer, including the helmet and setting
Detector, detector driving circuit, signal-processing board, power panel, SD card storage circuit, LCD eyepieces, battery on the helmet
And store button, wherein detector are arranged immediately ahead of the helmet and with helmet outer wall and are fixed as one, LCD eyepieces by holder with
The helmet is connected, and LCD eyepieces and detector are coaxial；
The output end of the detector is connect with detector driving circuit, and the output end of detector driving circuit passes through signal
Line is connect with signal-processing board, and the image signal output end of signal-processing board is respectively connected to SD card storage circuit and LCD eyepieces, deposits
The control terminal of button access signal-processing board is stored up, battery provides general supply for power panel, and the power output end of power panel accesses it
The power end of its all parts；
Detector driving circuit configures detector, and detector starts to acquire the realtime graphic initial data of target；
The realtime graphic initial data that detector driving circuit pick-up probe is sent, and the realtime graphic initial data received is sent out
It is sent to signal-processing board；Signal-processing board carries out Digital Image Processing to the realtime graphic initial data received and obtains target
Temperature information image；The display chip of signal-processing board handles obtained temperature information image, with VGA formats export to
LCD eyepieces.
A kind of temp measuring method based on the helmet-type infrared radiation thermometer, steps are as follows：
1st step, system initialization, set temperature alarm threshold value, detector driving circuit configure detector, detection
Device starts to acquire the realtime graphic initial data of target；
2nd step, the realtime graphic initial data that detector driving circuit pick-up probe is sent, and it is real-time by what is received
Original image data is sent to signal-processing board；
3rd step, signal-processing board carry out Digital Image Processing to the realtime graphic initial data received, carry out figure successively
As thermometric, image enhancement and pseudo-colours superposition, the temperature information image of target is obtained；
The display chip of 4th step, signal-processing board handles obtained temperature information image, is exported with VGA formats
To LCD eyepieces, for eye-observation.
Compared with prior art, the present invention its remarkable advantage：(1) for the first time by infrared temperature-test technology and helmet-type it is infrared heat at
As working method is combined, realize comprehensively during O＆M inspection " go to which, it is seen where, which is found " O＆M mode；(2)
Treatment technology is formed in original design structure of miniaturization thermal imaging system to break through, and only completes infrared measurement of temperature using processing chip,
Reduction in bulk is to 44.5mm × 44.5mm × 44.5mm, weight<1kg, power consumption<2w, realize it is small, light-weight, continuation of the journey when
Between long equal portable devices the characteristics of having, more traditional hand-held infrared radiation thermometer is under same battery capacity when off-line working
Between increase 300%-400%；(3) equipment, infrared radiation thermometer, human eye are detected by adjusting and realize coaxial observation so that operation maintenance personnel
Abnormal object can fast and accurately be navigated to and start troubleshooting, temperature measurement accuracy reaches actually required index, in addition, more traditional
Hand-held infrared radiation thermometer cost is easy to implement extensive equipment down to 30%-40%.
Description of the drawings
Fig. 1 is the helmet installation diagram of infrared radiation thermometer of the present invention.
Fig. 2 is the electrical block diagram of infrared radiation thermometer of the present invention.
Fig. 3 is the electrical block diagram of signal-processing board of the present invention.
Fig. 4 is the thermometric flow chart of helmet-type infrared radiation thermometer of the present invention.
Fig. 5 is temperature logs, wherein（a）It is temperature logs figure obtained by conventional method；（b）It is that wide temperature range of the present invention is black
The temperature logs figure of body calibration gained.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
In conjunction with Fig. 1~2, helmet-type infrared radiation thermometer of the present invention, including the helmet 9 and the detection that is arranged on the helmet 9
Device 1, detector driving circuit 2, signal-processing board 3, power panel 4, SD card storage circuit 5, LCD eyepieces 6, battery 7 and storage are pressed
The setting of button 8, wherein detector 1 is fixed as one in 9 front of the helmet and with helmet outer wall, and LCD eyepieces 6 pass through holder and the helmet
It is connected, and LCD eyepieces 6 and detector 1 are coaxial.
The output end of the detector 1 is connect with detector driving circuit 2, and the output end of detector driving circuit 2 passes through
Signal wire is connect with signal-processing board 3, and the image signal output end of signal-processing board 3 is respectively connected to SD card storage circuit 5 and LCD
Eyepiece 6, store button 8 access the control terminal of signal-processing board 3, and battery 7 is that power panel 4 provides general supply, the power supply of power panel 4
Output end accesses the power end of other all parts, and the operating voltage of all parts needs is provided for whole system normal work.
Detector driving circuit 2 provides necessary number and analog signal for the normal work of detector 1, what pick-up probe 1 exported
14-bit data image signals are simultaneously sent to signal-processing board 3；
In conjunction with Fig. 3, the signal-processing board 3 is integrated with fpga chip, and connect with fpga chip memory, detection
Device drive interface, power supply plate interface, buzzer and display chip, detector drive interface and detector driving circuit
2 connections, power supply plate interface are connect with power panel 4, the output end access SD card storage circuit 5 and LCD eyepieces 6 of display chip；
Fpga chip has the function of Digital Image Processing, Threshold Alerts, Digital Image Processing result is sent to display chip, and produce
Raw alarm signal controls buzzer.
Battery 7 is that power panel 4 provides general supply, and detector driving circuit 2 configures detector 1, and detector 1 starts
Acquire the realtime graphic initial data of target；The realtime graphic initial data that 2 pick-up probe 1 of detector driving circuit is sent,
And the realtime graphic initial data received is sent to signal-processing board 3；Signal-processing board 3 is former to the realtime graphic received
Beginning data carry out Digital Image Processing and obtain the temperature information image of target；The temperature that the display chip of signal-processing board 3 will obtain
Degree frame is handled, and is exported to LCD eyepieces 6 with VGA formats.
In conjunction with Fig. 4, the temp measuring method of helmet-type infrared radiation thermometer of the present invention, steps are as follows：
1st step is that power panel 4 provides general supply by battery 7, set temperature alarm threshold value, and detector driving circuit 2 is right
Detector 1 is configured, and detector 1 starts to acquire the realtime graphic initial data of target；
2nd step, the realtime graphic initial data that 2 pick-up probe 1 of detector driving circuit is sent, and the reality that will be received
When original image data be sent to signal-processing board 3；
3rd step, signal-processing board 3 carry out Digital Image Processing to the realtime graphic initial data received, carry out successively
Image thermometric, image enhancement and pseudo-colours superposition, obtain the temperature information image of target.The Digital Image Processing, specifically
Process is as follows：
（3.1）Realtime graphic initial data is handled, it will be real-time using the First Input First Output fifo inside FPGA
Each row data of original image data are end to end, obtain the continuous original image of a frame；
（3.2）It is operated the background removal of original image by single point correction：Detector is placed on using a uniform black matrix
In front of camera lens, the gray average of each pixel is sought with detector acquisition Q frame consecutive images, determination obtains background image, often
The new image of frame all makees difference with the background image to get to visual infrared image in output, and formula is as follows：
In formula, Icalibration(i, j) is the gray scale output valve of pixel (i, j) after correction, Ioriginal(i, j) is original
The gray scale output valve of pixel (i, j),For the gray scale output valve of background image pixels point (i, j), N is
The frame number of timing acquisition, wherein N, i, j are positive integer, and 200≤Q≤400,0 ＜ i≤320,0 j≤56 ＜；
（3.3）The high-frequency noise that visual infrared image is removed by the way of medium filtering obtains thermometric pre-image；If
It needs to store, selects store button（8）, SD card storage circuit（5）Acquisition signal-processing board in real time（3）What display chip was sent out
Thermometric pre-image, and store into SD card；
（3.4）Temperature logs are obtained using wide temperature range blackbody demarcation technology, is determined according to the temperature logs and is surveyed per frame
The position that gray scale, that is, temperature maximum occurs in warm pre-image, and calculate coordinate of the position in entire thermometric pre-image；Sentence
Whether disconnected temperature maximum is higher than preset temperature alarming threshold value, if then sending out alarm control signal, control buzzer carries out
Alarm, does not otherwise alarm；The wide temperature range blackbody demarcation technology, is as follows：
（3.4.1）It places the detector and is demarcated in the blackbody chamber room for be filled with liquid nitrogen first：By blackbody temperature from 0 DEG C
Start often to increase image data of 2 DEG C of acquisitions, it is each to demarcate temperature T continuous acquisition δ frame image datas and record, by δ
The gray value of all pixels point is cumulative in frame image finds out gray value totality desired value, i.e. reality of the detector in calibration temperature T
Border gray value, is shown below：
In formula, E (IT) it is the overall desired value for demarcating gray value under temperature T, i.e. actual grey value；δ is continuous acquisition figure
The frame number of picture, 100≤δ≤400；ITThe gray value of pixel (m, n) under (m, n) expression calibration temperature T, 1≤m≤M, 1≤n≤
N；M × N is dimension, that is, image size of image；
To demarcate temperature as ordinate, gray value is abscissa, makes calibration temperature T and actual grey E (IT) first
Calibration curve；
（3.4.2）It places the detector in glass container, container inner wall plates mercury layer, detector camera lens and container inner wall
It is bonded closed, which is placed in the blackbody chamber room vacuumized, according to step（3.4.1）Method demarcated, do bid
Constant temperature degree T and actual grey E (IT) the second calibration curve, the deviation of the second calibration curve and the first calibration curve is due to being
It unites caused by the heat that work generates；
（3.4.3）It places the detector in the blackbody chamber room without any processing, and keeps laboratory environment constant temperature permanent
It is wet, according to step（3.4.1）Method demarcated, make calibration temperature T and actual grey E (IT) third calibration curve,
The deviation E of third calibration curve and the first calibration curve1It is that the heat generated with system work due to environment temperature is caused jointly
, the deviation E of third calibration curve and the second calibration curve2It is then caused by environment temperature；
（3.4.4）According to the deviation between three calibration curves, determine that the corresponding system work of each calibration temperature T generates
Heat compensation amount and ambient temperature compensation amount, by the deviation E of third calibration curve and the first calibration curve1It is calibrated with third bent
The deviation E of line and the second calibration curve2After summation divided by 2 obtain E3, by E3Third calibration curve correcting process is superimposed to be surveyed
Warm curve, the temperature logs meet second-degree parabola equation：
T (X)=aX2+bX+c （3）
In formula, T (X) is the corresponding actual temperature values of gray value of image X, and X indicates gray value, and a, b, c are respectively curve control
Coefficient processed.
（3.5）Original 14 are that 14-bit thermometric pre-image changes into 8 i.e. 8-bit after histogram equalization processing
Format, obtain normal visual pattern；
（3.6）The i.e. temperature maximum of gray scale is found in normal visual pattern by way of pipeline data replacement
Position coordinates are used in combination box to mark the point around temperature character adding to the point, obtain the temperature information image of target；
Pass through（3.4）~（3.5）Two steps have obtained maximum temperature information and normal visual pattern in thermometric pre-image, by this two
Partial fusion is got up to be shown to user；
（3.7）By temperature information image magnification to be suitble to the display dimension of eyepiece；For example, by using detector be 320 ×
240 pixel dimension, and the display dimension of eyepiece is 640 × 480, it is therefore desirable to by image magnification 4 again to be suitble to eyepiece
Show dimension, method is delayed to each pixel point value continuously inputted with 4 times of clock faster than pixel clock
It deposits and reads, the data of an original pixel are read 4 times within the scope of sphere of movements for the elephants lattice, this completes 4 times of image
Amplification.
（3.8）Amplified temperature information image is converted into coloured image by pseudo-color coding.
4th step, signal-processing board（3）Display chip obtained temperature information image is handled, it is defeated with VGA formats
Go out to LCD eyepieces（6）, for eye-observation.
Embodiment 1
Helmet-type infrared radiation thermometer of the present invention has following parameter：
1）, the helmet 9：Using the power department standard helmet, weight ＜ 1kg, waterproofing grade ＞ IPX5；
2）, detector 1：Use the Minitype infrared thermal imaging system using uncooled fpa detector as core；
3）, battery 7：It, can continuous work 8 hours to the present invention using 1900mA lithium batteries；
4）, store button 8：There are two off-line working buttons for tool, are to correct and take pictures respectively, system can after working long hours
By correcting key come update the system error；
5）, LCD eyepieces 6：Using 640 × 480 standard VGA colour display eyepieces, 0.61 inch of eyepiece size installs lens additional
Group is by screen magnifying to 2 inches for eye-observation；
6）, SD card storage circuit 5：Using FAT32 file system, by the current frame image acquired in real time storage to SD card
In, it is furnished with VGA signal intensifier circuits, can be shown for multipath VGA signal；
7）, signal-processing board 3：Fpga chip uses altera corp's EP3C80F484U4 chips, and the chip is in speed, appearance
It measures and all meets design requirement in price, fully take into account the external memory space realized needed for hardware algorithm, present treatment electricity
Road arranged in pairs or groups 1 model MT48LC4M32B2 SDRAM as the soft core running spaces of NIOS, size 128Mb；It takes simultaneously
The SRAM of 3 model IS61WV102416BLL is matched as chip external memory, every SRAM size is 1M × 16, can be with
Store three frame images；
8）, preset temperature alarming threshold value：It is required to be set as 55 degrees Celsius according to power department；
Using above-mentioned infrared radiation thermometer, calibration obtains temperature logs equation：
T (X)=aX2+bX+c
In formula, T (X) is the corresponding actual temperature values of gray value of image X, and X indicates gray value, and a, b, c are respectively curve control
The value of coefficient processed, each coefficient is respectively a=- 3 × 10-6, b=0.065, c=- 176.15.Fig. 5（a）It is thermometric obtained by conventional method
Curve graph；Fig. 5（b）It is the temperature logs figure obtained by wide temperature range blackbody demarcation of the present invention, in order to make to see more clearly, interception
Part of the temperature section from 22 degree to 64 degree is as shown in table 1, and original temperature is the temperature of black matrix；First calibration curve value is resonable
Think environmental condition, the heat without system work generation and the value obtained by the influence of environment temperature；Temperature logs value is in reality
In environment, the corresponding value of temperature logs of gained after heat and ambient temperature compensation is generated to system work；As can be seen that final
The temperature logs of fitting are the result is that global optimizing, realization obtain corresponding output temperature value to the gray value of input.According in table
Data can be seen that the temperature logs after temperature-compensating, residual standard deviation 0.952 has compared with ideal temperature measurement accuracy
Declined, but be already higher than traditional temperature measurement accuracy, can reached for the final temperature measurement accuracy in the present invention and be set with conventional hand
Standby comparable precision provides Mathematics Proof.The fitting result is very accurate, more complicated for the non-linear relation between variable
The case where also can be good at adapting to.
In conclusion the present invention uses the technology for being combined infrared measurement of temperature mode with helmet-type imaging mode, one is formed
The novel thermometric mode of kind, during being mainly used for power department to the various equipment O＆M inspections of large-scale power transformation base station.This hair
It is bright that there is the physics advantages such as small, light-weight, length in cruise duration, the both hands of operation maintenance personnel can be liberated comprehensively, make operation maintenance personnel
More inspection devices can be operated tested target is adjusted and be safeguarded；By adjusting be detected equipment, infrared radiation thermometer,
Human eye realizes coaxial observation so that operation maintenance personnel can fast and accurately navigate to abnormal object and start troubleshooting.Meanwhile in skill
It is realized for the first time in art using the accurate infrared temperature-test technology that single FPGA is core on the thermal imaging system of miniaturization, not only thermometric is smart
Degree can reach the temperature measurement accuracy of con-ventional handheld temperature measurer, simultaneously because having abandoned processor core expensive in portable equipment
Piece greatly reduces product cost, and the cost of the design only accounts for the 30%-40% of con-ventional handheld equipment at present, convenient for high-volume
Equipment ensures that every operation maintenance personnel can equip, substantially increases routing inspection efficiency and failure recall rate.
Table 1
Claims (1)
1. a kind of temp measuring method of helmet-type infrared radiation thermometer, which is characterized in that the helmet-type infrared radiation thermometer includes the helmet (9)
And detector (1), detector driving circuit (2), signal-processing board (3), power panel (4), the SD being arranged on the helmet (9)
Card storage circuit (5), LCD eyepieces (6), battery (7) and store button (8), wherein detector (1) setting the helmet (9) just before
It is fixed as one just and with helmet outer wall, LCD eyepieces (6) are connected by holder with the helmet, and LCD eyepieces (6) and detector
(1) coaxial；
The output end of the detector (1) is connect with detector driving circuit (2), and the output end of detector driving circuit (2) is logical
It crosses signal wire to connect with signal-processing board (3), the image signal output end of signal-processing board (3) is respectively connected to SD card storage circuit
(5) and LCD eyepieces (6), store button (8) access the control terminal of signal-processing board (3), and battery (7) is that power panel (4) provides always
The power output end of power supply, power panel (4) accesses the power end of other all parts；Steps are as follows：
1st step, system initialization, set temperature alarm threshold value, detector driving circuit (2) configure detector (1), visit
Device (1) is surveyed to start to acquire the realtime graphic initial data of target；
2nd step, the realtime graphic initial data that detector driving circuit (2) pick-up probe (1) is sent, and the reality that will be received
When original image data be sent to signal-processing board (3)；
3rd step, signal-processing board (3) carry out Digital Image Processing to the realtime graphic initial data received, carry out figure successively
As thermometric, image enhancement and pseudo-colours superposition, the temperature information image of target is obtained；
The display chip of 4th step, signal-processing board (3) handles obtained temperature information image, with VGA formats export to
LCD eyepieces (6), for eye-observation；
Digital Image Processing described in above-mentioned 3rd step, detailed process are as follows：
(3.1) realtime graphic initial data is handled, using the First Input First Output fifo inside FPGA by realtime graphic
Each row data of initial data are end to end, obtain the continuous original image of a frame；
(3.2) pass through single point correction operation by the background removal of original image：Detector camera lens is placed on using a uniform black matrix
The gray average of each pixel is sought in front with detector acquisition Q frame consecutive images, and determination obtains background image, new per frame
Image all make difference with the background image to get to visual infrared image in output, formula is as follows：
In formula, Icalibration(i, j) is the gray scale output valve of pixel (i, j) after correction, Ioriginal(i, j) is original image vegetarian refreshments
The gray scale output valve of (i, j),For the gray scale output valve of background image pixels point (i, j), Q is timing
The frame number of acquisition, wherein Q, i, j are positive integer, and 200≤Q≤400,0 ＜ i≤320,0 j≤56 ＜；
(3.3) high-frequency noise that visual infrared image is removed by the way of medium filtering obtains thermometric pre-image；SD card stores
Circuit (5) acquires the thermometric pre-image that signal-processing board (3) display chip is sent out in real time, and stores into SD card；
(3.4) temperature logs are obtained using wide temperature range blackbody demarcation technology, is determined according to the temperature logs pre- per frame thermometric
The position that gray scale, that is, temperature maximum occurs in image, and determine coordinate of the position in entire thermometric pre-image；Judge temperature
Spend whether maximum value is higher than preset temperature alarming threshold value, if then sending out alarm control signal, control buzzer is alarmed,
Otherwise it does not alarm；
(3.5) histogram equalization processing is carried out to original thermometric pre-image, obtains normal visual pattern；
(3.6) the gray scale i.e. position of temperature maximum is found in normal visual pattern by way of pipeline data replacement
Coordinate is used in combination box to mark the point around temperature character adding to the point, obtains the temperature information image of target；
(3.7) by temperature information image magnification to be suitble to the display dimension of eyepiece；
(3.8) amplified temperature information image is converted into coloured image by pseudo-color coding；
Wide temperature range blackbody demarcation technology described in above-mentioned (3.4) step, is as follows：
(3.4.1) is placed the detector first to be demarcated in the blackbody chamber room for be filled with liquid nitrogen：By blackbody temperature since 0 DEG C
Image data of 2 DEG C of acquisitions is often increased, it is each to demarcate temperature T continuous acquisition δ frame image datas and record, by δ frame figures
The gray value of all pixels point is cumulative as in finds out gray value totality desired value, i.e. practical ash of the detector in calibration temperature T
Angle value is shown below：
In formula, E (IT) it is the overall desired value for demarcating gray value under temperature T, i.e. actual grey value；δ is the frame of continuous acquisition image
Number, 100≤δ≤400；IT(m, n) indicates the gray value of pixel (m, n) under calibration temperature T, 1≤m≤M, 1≤n≤N；M×N
For dimension, that is, image size of image；
To demarcate temperature as ordinate, gray value is abscissa, makes calibration temperature T and actual grey E (IT) the first calibration it is bent
Line；
(3.4.2) is placed the detector in glass container, and container inner wall plates mercury layer, and detector camera lens is bonded with container inner wall
It is closed, which is placed in the blackbody chamber room vacuumized, is demarcated according to the method for step (3.4.1), calibration temperature is made
Spend T and actual grey E (IT) the second calibration curve；
(3.4.3) is placed the detector in the blackbody chamber room without any processing, and keeps laboratory environment constant temperature and humidity, is pressed
It is demarcated according to the method for step (3.4.1), makes calibration temperature T and actual grey E (IT) third calibration curve；
(3.4.4) determines that the corresponding system work of each calibration temperature T generates heat according to the deviation between three calibration curves
Three calibration curves are modified processing and obtain temperature logs, the temperature logs by compensation rate and ambient temperature compensation amount
Meet second-degree parabola equation：
T (X)=aX2+bX+c (3)
In formula, T (X) is the corresponding actual temperature values of gray value of image X, and X indicates gray value, and a, b, c are respectively curve controlled system
Number.
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| CN106418865A (en) * | 2016-11-10 | 2017-02-22 | 国家电网公司 | Intelligent patrol safety helmet for transformer substation |
| CN107124199A (en) * | 2017-05-16 | 2017-09-01 | 上海欧忆能源科技有限公司 | Intelligent helmet, cognitive method and storage medium with Internet of Things perceptional function |
| CN111415431A (en) * | 2020-02-26 | 2020-07-14 | 国网宁夏电力有限公司电力科学研究院 | Inspection method and system for transformer substation, control platform and wearable device |
| CN111476130A (en) * | 2020-03-27 | 2020-07-31 | 深圳光启超材料技术有限公司 | Target object processing method, head-mounted device, storage medium and electronic device |
| CN111700336B (en) * | 2020-06-18 | 2021-06-22 | 深圳市卓炜视讯科技有限公司 | Intelligent temperature measurement helmet |
| CN112991696A (en) * | 2021-02-27 | 2021-06-18 | 郑州海威光电科技有限公司 | Infrared thermal image low-power-consumption transmission method |
| CN114459611A (en) * | 2021-11-11 | 2022-05-10 | 国网江西省电力有限公司吉安供电分公司 | Intelligent temperature measurement method based on infrared detection, readable storage medium and intelligent temperature measurement inspection tour instrument |
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| CN101867797A (en) * | 2010-07-09 | 2010-10-20 | 公安部上海消防研究所 | Helmet type infrared detection and image transmission processing system |
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| CN102680109A (en) * | 2012-05-21 | 2012-09-19 | 浙江雷邦实业有限公司 | Helmet type thermal imager system |
| CN202614381U (en) * | 2012-05-03 | 2012-12-19 | 浙江雷邦实业有限公司 | Helmet type fire fighting thermal imager |
| CN203323880U (en) * | 2013-06-25 | 2013-12-04 | 南京理工大学 | Infrared helmet type temperature measurer |
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| US6255650B1 (en) * | 1998-12-11 | 2001-07-03 | Flir Systems, Inc. | Extreme temperature radiometry and imaging apparatus |
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| CN101806627A (en) * | 2010-03-30 | 2010-08-18 | 中国计量学院 | Method for measuring influence of background factors to infrared temperature measurement |
| CN101867797A (en) * | 2010-07-09 | 2010-10-20 | 公安部上海消防研究所 | Helmet type infrared detection and image transmission processing system |
| CN102419208A (en) * | 2011-06-07 | 2012-04-18 | 张伯文 | Headmounted internal-display type fire-fighting night-vision dual-purpose thermal imager |
| CN202614381U (en) * | 2012-05-03 | 2012-12-19 | 浙江雷邦实业有限公司 | Helmet type fire fighting thermal imager |
| CN102680109A (en) * | 2012-05-21 | 2012-09-19 | 浙江雷邦实业有限公司 | Helmet type thermal imager system |
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