CN106679815A - High temperature point precise locating method in infrared scanning temperature measurement of rotary kiln surface - Google Patents
High temperature point precise locating method in infrared scanning temperature measurement of rotary kiln surface Download PDFInfo
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- CN106679815A CN106679815A CN201611102152.8A CN201611102152A CN106679815A CN 106679815 A CN106679815 A CN 106679815A CN 201611102152 A CN201611102152 A CN 201611102152A CN 106679815 A CN106679815 A CN 106679815A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009529 body temperature measurement Methods 0.000 title abstract description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000004807 localization Effects 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
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- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0044—Furnaces, ovens, kilns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Radiation Pyrometers (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a high temperature point precise locating method in infrared scanning temperature measurement of a rotary kiln surface and belongs to a field of signal processing technology. Based on a traditional uniform angle locating algorithm, the invention takes practical conditions of an industrial field fully into consideration, introduces the height difference of a scanning instrument and the rotary kiln and combines with small deviation of the uniform angle locating algorithm and advantages of high real time performance and the like, and thus proposes the high temperature point precise locating method in infrared scanning temperature measurement of the rotary kiln surface. According to the invention, gaps among different scanning points are obtained based on the traditional uniform angle locating algorithm, a variable of the height difference of a scanning instrument and the rotary kiln is introduced and scanning point positions of the traditional algorithm are corrected further. Therefore, more accurate scanning point gap data is obtained and scanning point number corresponding to a high temperature point is found. The location of the high temperature point v is calculated, so that accurate location of the high temperature point is realized. The method provided by the invention is simple in implementation process, high in actual position matching level and high in application and promotion value.
Description
Technical field
The present invention relates to signal processing technology field, specifically a kind of method for correcting position of temperature scanning point.
Background technology
In recent years, with the high speed development of the industry such as China's building materials, metallurgy, chemical industry and environmental protection, revolution needed for these industries
The quantity of kiln also constantly increases.Rotary kiln is the nucleus equipment of raw material calcining link in production technology, the quality of its working order
It is directly connected to the Yield and quality and cost of clinker.Inner liner of rotary kiln is refractory material, in temperature factor, chemical erosion, machinery
Under the different situations such as abrasion, refractory material can be made different degrees of breakage to occur and come off, cause kiln body inside rough and uneven in surface, it is thick
Thin inequality.Once local refractory material comes off, can seriously be threatened to production and safety belt.The thickness degree master of inner liner of rotary kiln
If being detected by rotary kiln surface temperature.Then illustrate that kiln lining has been received herein when abnormal high temperature occurs in rotary kiln region
Damage, there is hot spot hidden danger.Once generation hot spot accident, it will the management and production to producer bring huge economic loss, or even
Threaten personal safety, it is therefore desirable to the temperature of real-time monitoring rotary kiln surface, be accurately positioned high temperature dot position, failure is found out in time
The position that may occur, instructs staff to adopt remedial measures, to ensure rotary kiln economy, stabilization, safely produce.Cause
This, this paper presents high temperature dot Precision Orientation Algorithm, is effectively prevented the appearance of the rotary kiln fault in production such as hot spot.
Existing location algorithm mainly has angularly location algorithm and equidistant location algorithm, and equidistant location algorithm is calculated
Simply, but position error is big, compared to equidistant location algorithm, angularly location algorithm positioning precision is higher, so in engineer applied
General to use angularly location algorithm, angularly localization method is according to the scan angle between the adjacent scanning element of each two of scanner
Degree is equal, and the scanning room between the adjacent scanning element of each two is calculated using the geometrical relationship between rotary kiln and scanner
Away from, but angularly scan and do not take into full account rotary kiln production scene actual conditions, and then assume that scanner is with rotary kiln
In same level, and be could possibly be higher than or less than the position of rotary kiln, therefore isogonism in ignoring scanner real work
Spend location algorithm to fail to realize high-precision scanning point location, the position where because can not accurately find out rotary kiln high temperature dot a bit.
The content of the invention
Present invention seek to address that above problem of the prior art.Propose one kind and realize the pinpoint method of high temperature dot.
Technical scheme is as follows：
A kind of accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point, it is comprised the following steps：
101st, scanner form is adjusted, its sweep limits is covered whole rotary kiln surface；
102nd, in-site measurement data below：Horizontal range H, the scanner to rotary kiln end distance of scanner and rotary kiln
L, rotary kiln length L, rotary kiln and scanner vertical drop h and the total number of scan points N of determination；
103rd, according to traditional angularly algorithm principle, it is assumed that the scanning angle between each two scanning element is equal, and
With reference to rotary kiln and scanner vertical drop h, scanner obtains more accurate sweep span Δ with the horizontal range H of rotary kiln
I computing formula；
104th, the temperature data that ultimate analysis scanner is collected, finds out the scanning period corresponding to highest warm spot, utilizes
High temperature dot ranging formulaCalculate physical locations of the high temperature dot n on rotary kiln.LnRepresent high temperature dot to revolution kiln hood
The length in portion.
Further, step 103 combines rotary kiln and scanner vertical drop h, the level of scanner and rotary kiln away from
Obtaining more accurate Δ i computing formula from H includes：
According to traditional angularly algorithm principle, it is assumed that the scanning angle between each two scanning element is equal, is calculated
The separation delta i of each scanning element；
Difference in height variable h is introduced, by triangle AA1Frontier juncture system between O calculate scanner to rotary kiln it is true away from
From H1；
With scanner to rotary kiln actual distance H1, instead of the approximate distance H of scanner in Δ i expression formulas to rotary kiln,
Obtain more accurate sweep span Δ i computing formula.
Further, the computing formula of traditional angularly algorithm principle scanning element Δ i is：
Δ i=H (tan (arctan (l/H)-i* Δ θ)
-tan(arctan(l/H)-(i+1)*Δθ))
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the distance of rotary kiln, and l represents kiln hood
To the distance of scanner and rotary kiln intersection point point, i represents scanning period, and Δ θ represents the angle between adjacent scanning element.
Further, actual distance H of the scanner to rotary kiln1Computing formula is：Wherein H is to sweep
The approximate distance of instrument and rotary kiln is retouched, h represents the vertical drop of rotary kiln and scanner.
Further, by H1Instead of obtained after H be accurately positioned after Δ i computing formula：
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the approximate distance of rotary kiln, and l is represented
To the distance of scanner and rotary kiln intersection point point, i represents scanning period to kiln hood, and Δ θ represents the angle between adjacent scanning element, h
Represent the vertical drop of rotary kiln and scanner.
Further, L in the step 104nComputing formula is：Wherein n is represented corresponding to maximum temperature
Scanning period, Δ i represents the distance between each scanning element after introducing difference in height variable.
Further, the scanning period that the step 104 is found out corresponding to highest warm spot includes：Infrared probe is in stepping electricity
Under machine drives, with horizontal direction 360 degree of scannings rotary kiln, because rotary kiln surface temperature is typically 100 to 500 degree, with environment
Temperature gap is very big, therefore the temperature data higher than 100 degree can be judged as valid data, therefore need to only intercept and be wherein more than
It is valid data that 100 degree of temperature data possesses, and is sent to the supporting thermometric softwares of PC, the trip temperature that thermometric software will be received
Data are compared, and find out the wherein highest temperature and its corresponding scanning period.
Advantages of the present invention and have the beneficial effect that：
The present invention has taken into full account industry spot actual conditions, scanner and rotary kiln difference in height is introduced, with reference to isogonism
Spend the little deviation of location algorithm, it is real-time the advantages of, it is proposed that a kind of rotary kiln surface infrared scan thermometric high temperature point essence
True localization method.The method includes that draw the spacing between each scanning element by traditional angularly location algorithm, then introducing is scanned
Instrument and this variable of rotary kiln difference in height, further correct the scanning element position of traditional algorithm, so as to draw more accurate scan point
Spacing data, finally finds out the scanning period corresponding to high temperature dot, and the position where calculating high temperature dot realizes that high temperature dot is accurate
Positioning.The inventive method implementation process is simple and the physical location goodness of fit is high, with application higher and promotional value.
Brief description of the drawings
Fig. 1 is prior art moderate angles algorithm schematic diagram；L represents rotary kiln length in figure, and l represents kiln hood to rotary kiln
With the distance of scanner intersection point point, H represents scanner to the distance of rotary kiln, and Δ i represents i-th sweep span；
Accompanying drawing 2 is scanner schematic view of the mounting position；
Accompanying drawing 3 is that scanner installs illustraton of model；Figure midpoint A represents scanner position, and line segment BC represents rotary kiln, A1
The position of scanner assumed in traditional angularly location algorithm is represented, β represents the scanning angle of depression.H1Represent scanner to rotary kiln
Actual range；
The localization method flow chart of the embodiment of the present invention of accompanying drawing 4.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, detailed
Carefully describe.Described embodiment is only a part of embodiment of the invention.
The present invention solve above-mentioned technical problem technical scheme be,
To realize being accurately positioned invention introduces rotary kiln and scanner difference in height variable h, as shown in figure 3, introducing high
Degree difference h scanners are then changed into H to the distance of rotary kiln from H1, and H1More meet practical engineering application situation.
The technical scheme of rotary kiln surface infrared scan thermometric high temperature point accurate positioning method is as follows：
101st, according to traditional angularly algorithm principle, it is assumed that the scanning angle between each two scanning element is equal, meter
The separation delta i of each scanning element is calculated, angularly algorithm schematic diagram is as shown in Figure 1.
102nd, according to schematic diagram 2, the difference in height variable h of introducing is gone out, by triangle AA1Frontier juncture system between O calculates sweeps
Retouch instrument to the actual distance H of rotary kiln1。
103rd, with scanner to rotary kiln actual distance H1, instead of scanner in Δ i expression formulas in 101 to the near of rotary kiln
Like apart from H, more accurate Δ i computing formula are obtained.
104th, the scanning period n where the analysis temperature data that is collected of scanner finds out maximum temperature point, then by height
N sweep span before warm spot adds up, then can obtain physical location L of the high temperature dot apart from kiln hoodn。
Preferably, the computing formula of scanning element Δ i is in step 101：
Δ i=H (tan (arctan (l/H)-i* Δ θ)
-tan(arctan(l/H)-(i+1)*Δθ))
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the distance of rotary kiln, and l represents kiln hood
To the distance of scanner and rotary kiln intersection point point, i represents scanning period, and Δ θ represents the angle between adjacent scanning element.
Preferably, in a step 102, H1Computing formula is：Wherein H is that scanner is near with rotary kiln
Like distance, h represents the vertical drop of rotary kiln and scanner.
Preferably, in step 103, by H1Instead of obtained after H be accurately positioned after Δ i computing formula：
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the approximate distance of rotary kiln, and l is represented
To the distance of scanner and rotary kiln intersection point point, i represents scanning period to kiln hood, and Δ θ represents the angle between adjacent scanning element, h
Represent the vertical drop of rotary kiln and scanner.
Preferably, at step 104, LnComputing formula is：Wherein n represents the scanning corresponding to maximum temperature
Period, Δ i represents the distance between each scanning element after introducing difference in height variable.
Rotary kiln infrared scanning temperature measurement system is made up of infrared scanner with the supporting temperature monitoring software at PC ends, infrared to sweep
Motor is used and angularly horizontally rotated during the infrared detection head retouched carries out data acquisition, the present invention under the drive of motor
Mode.Therefore infrared probe will horizontal sweep rotary kiln data line from left to right under motor driving.Rotary kiln and scanner
Relation schematic diagram as shown in Fig. 2 scanner be arranged on the high building of rotary kiln certain distance, to prevent barrier from blocking.
The present invention is illustrated using southwestern Cement Co., Ltd Guangan, Xiushan Mountain production line actual production data.Arrive first
Rotary kiln production scene measures data below as shown in Figure 1：Rotary kiln length is L=60m, rotary kiln and horizontal scan apart from H
=30m, scanner are apart from kiln hood apart from l=30m, scanner and rotary kiln vertical drop h=5m.This infrared scanning system
Unite total number of scan points N=600.
Again the separation delta between each two scanning element is calculated by data above and according to localization method proposed by the present invention
i.Then the scan data that PC ends thermometric software is sent to by scanner is analyzed, highest warm spot institute is right in finding out a line temperature data
The scanning period answered.
Finally according to high temperature dot ranging formulaDraw physical locations of the high temperature dot n on rotary kiln.
The present invention proposes rotary kiln surface temperature Precision Orientation Algorithm, introduces scanner scanning luffing angle, thus obtains
Scanner and the vertical drop of rotary kiln, belong to industrial safety-security area.Rotary kiln engineer applied actual conditions of the present invention, fully
Consider the factor of various influence position errors, height between scanner and rotary kiln is taken into full account on the basis of angularly algorithm
Influence of the difference to positioning precision, drastically increases positioning precision.Inventive algorithm is simple, and operand is small, with larger application
Prospect.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limits the scope of the invention.
Read after the content of record of the invention, technical staff can make various changes or modifications to the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (7)
1. a kind of accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point, it is characterised in that including following step
Suddenly：
101st, scanner form is adjusted, its sweep limits is covered whole rotary kiln surface；
102nd, in-site measurement data below：The horizontal range H of scanner and rotary kiln, scanner to rotary kiln end apart from l, time
Rotary kiln length L, rotary kiln and scanner vertical drop h and the total number of scan points N of determination；
103rd, according to traditional angularly algorithm principle, it is assumed that the scanning angle between each two scanning element is equal, and is combined
Rotary kiln and scanner vertical drop h, scanner obtain more accurate sweep span Δ i meters with the horizontal range H of rotary kiln
Calculate formula；
104th, the temperature data that ultimate analysis scanner is collected, finds out the scanning period corresponding to highest warm spot, using high temperature
Point location formulaCalculate physical locations of the high temperature dot n on rotary kiln, LnRepresent high temperature dot to rotary kiln head
Distance.
2. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 1, its feature
It is that step 103 combines rotary kiln and scanner vertical drop h, scanner obtains more accurate with the horizontal range H of rotary kiln
Δ i computing formula include：
According to traditional angularly algorithm principle, it is assumed that the scanning angle between each two scanning element is equal, calculates and respectively sweeps
The separation delta i of described point；
Difference in height variable h is introduced, by triangle AA1Frontier juncture system between O calculates scanner to the actual distance H of rotary kiln1；
With scanner to rotary kiln actual distance H1, instead of scanner in Δ i expression formulas to the approximate distance H of rotary kiln, obtain more
Accurate sweep span Δ i computing formula.
3. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 2, its feature
It is that the computing formula of traditional angularly algorithm principle scanning element Δ i is：
Δ i=H (tan (arctan (l/H)-i* Δ θ)
-tan(arctan(l/H)-(i+1)*Δθ))
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the distance of rotary kiln, and l represents kiln hood to sweeping
The distance of instrument and rotary kiln intersection point point is retouched, i represents scanning period, and Δ θ represents the angle between adjacent scanning element.
4. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 2, its feature
It is, the actual distance H of scanner to rotary kiln1Computing formula is：Wherein H is scanner and rotary kiln
Approximate distance, h represents the vertical drop of rotary kiln and scanner.
5. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 2, its feature
It is, by H1Instead of obtained after H be accurately positioned after Δ i computing formula：
Wherein Δ i represents i-th sweep span of scanning element, and H represents scanner to the approximate distance of rotary kiln, and l represents kiln hood
To the distance of scanner and rotary kiln intersection point point, i represents scanning period, and Δ θ represents the angle between adjacent scanning element, and h is represented
The vertical drop of rotary kiln and scanner.
6. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 1, its feature
It is, L in the step 104nComputing formula is：Wherein n represents the scanning period corresponding to maximum temperature, Δ i
Represent the distance between each scanning element after introducing difference in height variable.
7. the accurate positioning method of rotary kiln surface infrared scan thermometric high temperature point according to claim 1, its feature
It is that the scanning period that the step 104 finds out corresponding to highest warm spot includes：Infrared probe under driving stepper motor, with
Horizontal direction 360 degree of scannings rotary kiln, because rotary kiln surface temperature is typically 100 to 500 degree, with environment temperature difference very
Greatly, therefore the temperature data higher than 100 degree valid data can be judged as, therefore the temperature wherein more than 100 degree need to be only intercepted
It is valid data that degrees of data possesses, and is sent to the supporting thermometric softwares of PC, and a line temperature data that thermometric software will be received is carried out
Compare, find out the wherein highest temperature and its corresponding scanning period.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611102152.8A CN106679815A (en) | 2016-12-05 | 2016-12-05 | High temperature point precise locating method in infrared scanning temperature measurement of rotary kiln surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539780A (en) * | 2018-11-29 | 2019-03-29 | 重庆邮电大学 | Based on each thermometric independent positioning method of rotary kiln surface angularly scanned |
| CN109583087A (en) * | 2018-11-30 | 2019-04-05 | 重庆邮电大学 | A kind of rotary kiln surface temperature-compensation method based on multi-faceted fusion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203323890U (en) * | 2013-07-02 | 2013-12-04 | 北京汉能清源科技有限公司 | Cement rotary kiln temperature measurement system |
| KR20140086039A (en) * | 2012-12-28 | 2014-07-08 | 주식회사 에스엔엔씨 | Rotary kiln have device for sensing temperature |
| CN105157843A (en) * | 2015-04-30 | 2015-12-16 | 无锡市崇安区科技创业服务中心 | Temperature measuring system for the surface of a rotary kiln body |
-
2016
- 2016-12-05 CN CN201611102152.8A patent/CN106679815A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140086039A (en) * | 2012-12-28 | 2014-07-08 | 주식회사 에스엔엔씨 | Rotary kiln have device for sensing temperature |
| CN203323890U (en) * | 2013-07-02 | 2013-12-04 | 北京汉能清源科技有限公司 | Cement rotary kiln temperature measurement system |
| CN105157843A (en) * | 2015-04-30 | 2015-12-16 | 无锡市崇安区科技创业服务中心 | Temperature measuring system for the surface of a rotary kiln body |
Non-Patent Citations (1)
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|---|
| SHAOSHENG DAI ET AL.: "Research on high precision equal-angle scanning method in rotary kiln temperature measurement system", 《INFRARED PHYSICS & TECHNOLOGY》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539780A (en) * | 2018-11-29 | 2019-03-29 | 重庆邮电大学 | Based on each thermometric independent positioning method of rotary kiln surface angularly scanned |
| CN109583087A (en) * | 2018-11-30 | 2019-04-05 | 重庆邮电大学 | A kind of rotary kiln surface temperature-compensation method based on multi-faceted fusion |
| CN109583087B (en) * | 2018-11-30 | 2023-05-30 | 重庆邮电大学 | Rotary kiln surface temperature compensation method based on multidirectional fusion |
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