CN2935106Y - Detection apparatus for high temperature field, flame image - Google Patents
Detection apparatus for high temperature field, flame image Download PDFInfo
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- CN2935106Y CN2935106Y CN 200620115795 CN200620115795U CN2935106Y CN 2935106 Y CN2935106 Y CN 2935106Y CN 200620115795 CN200620115795 CN 200620115795 CN 200620115795 U CN200620115795 U CN 200620115795U CN 2935106 Y CN2935106 Y CN 2935106Y
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Abstract
The utility model discloses a detection device for high temperature field and flame image, which adopts mixed images to receive optical fiber array and computer temperature video frequency processing and is able to provide image of high temperature field, meanwhile, the device splits light of the temperature optical fiber regularly separated from the receiving optical array of the mixed images through Y-shaped optical fiber coupler, adopts colorimetric temperature measuring technology to accurately detect temperatures of each preset point in the temperature field, through temperature field interpolation processing, while providing images of high temperature field, precisely calculates temperatures of high temperature field and each other points, and the device has extensive application, being able to adapt to severe environment such as metallurgic oven that contains plenty of powder.
Description
Technical field
The utility model relates to a kind of device that detects high-temperature temperature field, flame image.
Background technology
Along with the continuous progress of metallurgical technology, measurement and control to temperature in the metallurgical technology are more and more important.In some large and medium-sized enterprise, mainly adopt colored industrial camera or industrial TV monitoring High-temp. kiln flame image current, the flame image that the testing staff arrives according to the observation is in conjunction with the temperature in the practical experience judgement high temperature furnace.This dependence manual observation, the detection method of rule of thumb judging, accuracy is relatively poor.In addition, this method that Chinese patent 94111569.0 discloses a kind of " furnace of power-plant boilers combustion distribution detection method and device thereof " is on furnace of power-plant boilers flame television monitoring device basis, on imaging optical path, put into a kind of color filter of wavelength, under single wavelength is the flame radiation image to obtain, video camera changes picture signal into electric signal, enter computing machine by image pick-up card, go into computing machine with the temperature mould of any in the employing pyrometer couple actual measurement stove, computer is handled as calculated, with the distribution of two-dimentional flame temperature field in the real-time detection stove, and on display monitor central monitoring system, export.But this method once can only be surveyed the temperature of a point during to the detection in temperature field.At present adopt total radiation pyrometer or colorimetric pyrometer that the temperature in the high temperature furnace is detected in addition, but this method once also can only be surveyed the temperature of a point, in testing process, need mobile total radiation pyrometer or colorimetric pyrometer could survey zones of different, very inconvenient.In recent years, along with development of electronic technology, the maturation of camcorder technology and universal, there is the Temperature Distribution that adopts thermal infrared imager to realize furnace temperature to detect, but because the thermal infrared imager cost is higher, and the work spectral coverage of its best is the measurement of middle low temperature, and is not suitable for working in rugged surroundings such as high temperature.
The utility model content
The purpose of this utility model provides high-temperature temperature field, the fire image detecting device of a kind of flame detection image simultaneously and high-temperature temperature field each point point temperature.
The total technical conceive of the utility model is: the physical method basis of radiation temperature measurement is Planck (Ptanck) thermal radiation law, according to Planck (Ptanck) thermal radiation law, the spectral radiance L of absolute black body (λ, T) determine by Planck law with the relation of its wavelength X, thermodynamic temperature T:
In the formula, λ is the radiation wavelength that object sends; T is a thermodynamic temperature;
C1=2 π c
2H---Planck first radiation constant, C
1=3.7418 * 10
-16Wm
2,
C
2=hc/k---Planck second radiation constant, C
2=1.438786 * 10
-2MK (wherein, h is a Planck's constant, and k is a Boltzmann constant, and c is an electromagnetic wave speed in a vacuum)
According to the spectrophotometric curve of absolute black body under different temperatures that planck formula is made, every curve is represented a fixing temperature, and every curve all has a maximum value, and this extreme value is to move along with the temperature rising and to the short direction of wavelength; Curve under the different temperatures, the wavelength X m of its peak of curve point and temperature T all satisfy Wien's displacement law:
λ mT=constant
Promptly when temperature raise, the spectral distribution of blackbody radiation energy will change.Radiation peak moves to the short direction of wavelength on the one hand, and the slope of spectral distribution curve will obviously increase on the other hand; The increase of slope causes the spectral energy of two wavelength correspondences than obvious variation takes place.Come the Measuring Object method of temperature to claim two-color thermometry according to measuring two spectral energies than (brightness ratios under two wavelength).
Because its temperature of any object surpasses absolute zero, all can belong to the wavelength region may of visible light and infrared light for its energy wavelength of thermal-flame field with form of electromagnetic wave emittance towards periphery.In fiber array, tell temperature set-point optical fiber by rule, the detection of each optical fiber set point temperatures is to tell two-way light by the coupled fiber beam split, two-way light uses different filtering glass to carry out bandpass filtering respectively, and use the infrasil photoelectric cell to detect the intensity signal of two-way light, through conditioning and A/D conversion, obtain the light intensity ratio under the two-way wavelength, utilize Wien's displacement law and scaling method to measure the temperature of this point in the temperature field at last.Other any point temperature can utilize the method for interpolation to calculate according to the point of known temperature.By software with temperature field calculating chart real-time rendering on computer screen, add the flame image that the ccd image process software shows on screen, just can on screen, realize the demonstration in flame and each point temperature field simultaneously.
The technical scheme that realizes the utility model purpose is a kind of high-temperature temperature field, fire image detecting device, includes the converging optical element, fiber array, the color image sensor that set gradually; Above-mentioned color image sensor is connected with microcomputer by microcomputer one video acquisition interface; It is characterized in that telling by rule the optical fiber of temperature set-point from described fiber array, the output terminal of the optical fiber of temperature set-point is connected with the input end of fiber coupler, two output terminals of Y shape fiber coupler are respectively equipped with first, second different filter glass of filter wavelength relatively, with the corresponding one by one infrared temperature sensor that is provided with of light signal by first, second filter glass, the output terminal of each infrared temperature sensor is connected with the input end of processes temperature signal circuit, and the output terminal of processes temperature signal circuit is connected with microcomputer by another interface of microcomputer.
From described fiber array afterbody by "
*" the shape rule tells at least 25 temperature set-point optical fiber.
Described converging optical element is a focusing objective len: described color image sensor is the CCD digital camera of adjustable focal length.
Described infrared temperature sensor is the infrasil photoelectric cell, and the photronic sensitive surface of infrasil is relative with two output terminals of fiber coupler.
Described processes temperature signal circuit is by electronic switch and form with the transport and placing device of the corresponding connection of each electronic switch respectively; Each input end of electronic switch connects with the output terminal of corresponding silicon photocell, and the output terminal of each transport and placing device all is connected with the input end of microcomputer interface circuit.
The utlity model has positive effect: owing to adopt image and temperature hybrid fiber array, and microcomputer temperature field Video processing can in time provide the image of high-temperature temperature field, simultaneously isolated design temperature point optical fiber in the fiber array is passed through the beam split of Y shape fiber coupler, adopt the color comparison temperature measurement technology, can accurately detect the temperature of each set point in the temperature field, handle by the Interpolation of Temperature of computer again, in the image that the high-temperature temperature field is provided, can accurately calculate the temperature of other each points of high-temperature temperature field, work spectral coverage of the present utility model can be high, in, low temperature can be suitable for the more rugged surroundings of dust such as metallurgical furnace.
Description of drawings
Fig. 1 is the structured flowchart of the utility model pick-up unit;
Fig. 2 is the circuit theory diagrams of the utility model pick-up unit;
Fig. 3 be among Fig. 2 A to view;
Fig. 4 is a temperature interpolation synoptic diagram of the present utility model;
Fig. 5 is the flow chart of testing process of the present utility model.
Embodiment
See Fig. 1 and Fig. 2, this device includes heat insulation converging optical element 1, fiber array 2, the color image sensor 3 that sets gradually.Above-mentioned converging optical element 1 is the flat focusing objective len of the protruding one side of one side, and focusing objective len is installed in the pick-up unit shell foremost, and focusing objective len is gathered the image of high-temperature temperature field by the heat-protecting glass on the wall of the high temperature scene of a fire 11; Above-mentioned fiber array 2 adopts the G.651 fiber array of unprotect cover bare fibre composition, and fiber array 2 is by more than the 30000 circular arrays of multimode bare fibre L2 proper alignment; The CCD digital camera that above-mentioned color image sensor 3 is adjustable focal lengths, can use 1/3 inch CCD computer camera PC2032, the output of camera and fiber array L2 is oppositely arranged, and the output terminal of CCD digital camera is connected with microcomputer 10 by microcomputer one video acquisition interface 4.From above-mentioned fiber array 2, press "
*" the shape rule tells 31 design temperature point optical fiber 2-1, as shown in Figure 3, the representative of figure orbicular spot be the optical fiber of thermometric degree, the optical fiber of the optical fiber of thermometric degree and other transitive graph picture is as broad as long.The output terminal of design temperature point optical fiber 2-1 is connected with the input end of Y shape fiber coupler 5, relatively two output terminals of Y shape fiber coupler 5 be respectively equipped with filter wavelength different first, the second filter glass 6-1,6-2, above-mentioned first, the second filter glass 6-1,6-2 is the bandpass filtering glass sheet of λ 1=0.8 and λ 2=1.0, with by first, the second filter glass 6-1, the light signal of 6-2 correspondence one by one is provided with infrared temperature sensor 7, infrared temperature sensor 7 is the infrasil photoelectric cell, can adopt 2DR type infrasil photoelectric cell, 62 light paths that corresponding 31 fixed temperature point optical fiber are told are provided with 62 infrasil photoelectric cells.The output terminal of each optical fiber is oppositely arranged one by one in photronic sensitive surface of each infrasil and the Y shape fiber coupler, accepts the light signal by filter glass.
Microcomputer 10 is to use and has PCI slot and USB serial port PIII type machine, and the plug-in card of microcomputer interface 9 is selected AMPCI9102 type plug-in card for use, and this card interface provides 8 tunnel 12 A/D, 4 tunnel 12 D/A, 16 way words input DI, 16 way words output DO also provides positive and negative 5V and positive and negative 12V direct supply.Temperature Array Signal Processing circuit 8 selects 1 electronic switch IC1 to form with 4 corresponding with each electronic switch IC1 respectively transport and placing device IC2 that are connected by 4 16 the tunnel.Transport and placing device IC2 can use high-operational amplifier OP07, and electronic switch IC1 can use 16 to select 1 integrated circuit 4067.The photronic voltage output end of each infrasil connects with the input end of corresponding electronic switch IC1 respectively, the positive input terminal of the corresponding transport and placing device IC2 with each of the output terminal of each electronic switch IC1 connects, 4 geocoding ends of each electronic switch are connected with 16 digital output ends of the plug-in card of microcomputer interface 9, the negative input end of 4 transport and placing device IC2 is connected with the output terminal of each transport and placing device itself, the output terminal of 4 transport and placing device IC2 is connected with 4 A/D input ends of the plug-in card of microcomputer interface 9 respectively, and plug-in card is inserted in the PCI slot of microcomputer.
The detection method of above-mentioned detection device is as follows:
See Fig. 1～Fig. 5, the light wave that send the high-temperature temperature field is accepted by fiber array 2 through scene of a fire heat-protecting glass 11 and focusing objective len 1 back, fiber array 2 offers microcomputer 10 to light-wave information by CCD digital camera 3 and video acquisition interface 4 on the one hand, utilizes 10 pairs of scene of a fire lightwave signals of microcomputer to carry out the video display process; On the other hand light-wave information through from fiber array 2 by "
*" the shape rule tells 31 design temperature point optical fiber and deliver to y-type optical fiber coupling mechanism 5; y-type optical fiber coupling mechanism 5 is divided into two-way light again with every design temperature point optical fiber; two-way light is sent into filtering in the different filter glass of filter wavelength respectively; by the infrasil photoelectric cell filtered light intensity is become the size of voltage again; after handling through electronic switch with by the processes temperature signal circuit 8 that transport and placing device constitutes; signal is transported to microcomputer 10 by microcomputer interface 9, utilize software to obtain the ratio of color comparison temperature measurement, demarcate the temperature value that form can obtain 31 design temperature points according to Wien's displacement law with by looking into.According to the temperature of measured 31 points, adopt the cubic spline function interpolation can calculate the temperature of arbitrfary point, 2 temperature values are t as is known
i, t
I-1, obtain this 2 t
iAnd t
I-1Between the temperature value of any point t (h), use following equation:
In the formula, h
I-1Be t
iAnd t
I-1Between distance, h is t
iAnd t
I-1Between some t (h) and t
iBetween distance, M
I-1And M
iThe second derivative that is respectively t (h) is at h=h
I-1Derivative with the h=0 place.Utilize 2 t
iAnd t
I-1The continuity of place's numerical value and first order derivative just can be obtained t
iAnd t
I-1Between the numerical value of arbitrfary point temperature, thereby can obtain the numerical value of arbitrfary point temperature in the temperature field.
Claims (5)
1, a kind of high-temperature temperature field, fire image detecting device include the converging optical element (1), fiber array (2), the color image sensor (3) that set gradually; Above-mentioned color image sensor (3) is connected with microcomputer (10) by microcomputer one video acquisition interface (4); It is characterized in that: the optical fiber of telling temperature set-point from described fiber array (2) by rule, the output terminal of the optical fiber of temperature set-point (2-1) is connected with the input end of fiber coupler (5), relatively two output terminals of Y shape fiber coupler (5) be respectively equipped with filter wavelength different first, second filter glass (the 6-1,6-2), with by first, second filter glass (the 6-1, light signal 6-2) correspondence one by one is provided with infrared temperature sensor (7), the output terminal of infrared temperature sensor (7) is connected with the input end of processes temperature signal circuit (8), and the output terminal of processes temperature signal circuit (8) is connected with microcomputer (10) by another interface of microcomputer (9).
2, high-temperature temperature according to claim 1 field, fire image detecting device is characterized in that: tell at least 25 temperature set-point optical fiber from described fiber array (2) afterbody by " * " shape rule.
3, high-temperature temperature according to claim 1 field, fire image detecting device, it is characterized in that: described converging optical element is focusing objective len (1): described color image sensor (3) is the CCD digital camera of adjustable focal length.
4, high-temperature temperature according to claim 1 field, fire image detecting device, it is characterized in that: described infrared temperature sensor (7) is the infrasil photoelectric cell, and the photronic sensitive surface of infrasil is relative with two output terminals of fiber coupler (5).
5, high-temperature temperature according to claim 1 field, fire image detecting device, it is characterized in that: described processes temperature signal circuit (8) is by electronic switch (IC
1) and respectively with each electronic switch (IC
1) the corresponding transport and placing device (IC that connects
2) form; Electronic switch (IC
1) each input end connect each transport and placing device (IC with the output terminal of corresponding silicon photocell
2) output terminal all be connected with the input end of microcomputer interface circuit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115795 CN2935106Y (en) | 2006-06-08 | 2006-06-08 | Detection apparatus for high temperature field, flame image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115795 CN2935106Y (en) | 2006-06-08 | 2006-06-08 | Detection apparatus for high temperature field, flame image |
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| Publication Number | Publication Date |
|---|---|
| CN2935106Y true CN2935106Y (en) | 2007-08-15 |
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ID=38351795
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|---|---|---|---|
| CN 200620115795 Expired - Lifetime CN2935106Y (en) | 2006-06-08 | 2006-06-08 | Detection apparatus for high temperature field, flame image |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456004C (en) * | 2006-06-08 | 2009-01-28 | 江苏技术师范学院 | Detection apparatus for high-temperature temperature field and flame image and deteting method |
| CN101403639B (en) * | 2008-11-17 | 2010-04-14 | 华中科技大学 | Temperature image and blackness image detection method for carbon hydrogen flame |
| CN101625269B (en) * | 2009-07-27 | 2010-12-01 | 北京航空航天大学 | Method for simultaneously monitoring two-dimensional distribution of combustion flame temperature field and concentration of combustion flame intermediate product |
| CN102435306A (en) * | 2011-10-21 | 2012-05-02 | 湖南镭目科技有限公司 | Device for detecting light intensity of flame |
| CN102605137A (en) * | 2012-04-13 | 2012-07-25 | 湖南镭目科技有限公司 | Rotating furnace molten steel temperature measurement device |
| CN102954486A (en) * | 2012-12-10 | 2013-03-06 | 中国船舶重工集团公司第七一一研究所 | Integral flame monitoring device |
| CN104501993A (en) * | 2014-11-27 | 2015-04-08 | 江汉大学 | Method and apparatus for monitoring temperature of workpiece in ionitriding furnace |
| CN108168712A (en) * | 2018-03-26 | 2018-06-15 | 朱清 | A kind of optical fiber interconnected array temperature field tablet detection device |
| CN110954222A (en) * | 2019-12-18 | 2020-04-03 | 北京理工大学 | Optimized temperature measurement method based on single-camera colorimetric temperature measurement system |
| CN116543522A (en) * | 2023-06-06 | 2023-08-04 | 应急管理部沈阳消防研究所 | Temperature measurement type electric fire detection device and method based on AI image compounding |
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2006
- 2006-06-08 CN CN 200620115795 patent/CN2935106Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456004C (en) * | 2006-06-08 | 2009-01-28 | 江苏技术师范学院 | Detection apparatus for high-temperature temperature field and flame image and deteting method |
| CN101403639B (en) * | 2008-11-17 | 2010-04-14 | 华中科技大学 | Temperature image and blackness image detection method for carbon hydrogen flame |
| CN101625269B (en) * | 2009-07-27 | 2010-12-01 | 北京航空航天大学 | Method for simultaneously monitoring two-dimensional distribution of combustion flame temperature field and concentration of combustion flame intermediate product |
| CN102435306B (en) * | 2011-10-21 | 2013-09-11 | 湖南镭目科技有限公司 | Device for detecting light intensity of flame |
| CN102435306A (en) * | 2011-10-21 | 2012-05-02 | 湖南镭目科技有限公司 | Device for detecting light intensity of flame |
| CN102605137A (en) * | 2012-04-13 | 2012-07-25 | 湖南镭目科技有限公司 | Rotating furnace molten steel temperature measurement device |
| CN102954486A (en) * | 2012-12-10 | 2013-03-06 | 中国船舶重工集团公司第七一一研究所 | Integral flame monitoring device |
| CN102954486B (en) * | 2012-12-10 | 2015-04-15 | 中国船舶重工集团公司第七一一研究所 | Integral flame monitoring device |
| CN104501993A (en) * | 2014-11-27 | 2015-04-08 | 江汉大学 | Method and apparatus for monitoring temperature of workpiece in ionitriding furnace |
| CN104501993B (en) * | 2014-11-27 | 2017-07-21 | 江汉大学 | A kind of method and apparatus for monitoring ion nitriding furnace workpiece temperature |
| CN108168712A (en) * | 2018-03-26 | 2018-06-15 | 朱清 | A kind of optical fiber interconnected array temperature field tablet detection device |
| CN110954222A (en) * | 2019-12-18 | 2020-04-03 | 北京理工大学 | Optimized temperature measurement method based on single-camera colorimetric temperature measurement system |
| CN116543522A (en) * | 2023-06-06 | 2023-08-04 | 应急管理部沈阳消防研究所 | Temperature measurement type electric fire detection device and method based on AI image compounding |
| CN116543522B (en) * | 2023-06-06 | 2024-02-09 | 应急管理部沈阳消防研究所 | Temperature measurement type electric fire detection device and method based on AI image compounding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090128 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |