CN102538983A - CCD (Charge Coupled Device) temperature measuring device - Google Patents
CCD (Charge Coupled Device) temperature measuring device Download PDFInfo
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- CN102538983A CN102538983A CN201210000302XA CN201210000302A CN102538983A CN 102538983 A CN102538983 A CN 102538983A CN 201210000302X A CN201210000302X A CN 201210000302XA CN 201210000302 A CN201210000302 A CN 201210000302A CN 102538983 A CN102538983 A CN 102538983A
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Abstract
The invention discloses a CCD (Charge Coupled Device) temperature measuring device, comprising a high-temperature lens which is provided with a light incoming end pointing to a detected view field and is enclosed by a protection cylinder. A light outgoing end of the high-temperature lens is provided with a spectroscope; two paths of light obtained through the spectroscope are output to a colorimetric probe and a near-infrared CCD camera. Signals measured by the colorimetric probe and the near-infrared CCD camera are transmitted to a processor. A temperature in the entire view field is obtained by processing of the processor. The colorimetric probe used in the CCD temperature measuring device is an infrared temperature measuring probe and uses a colorimetric temperature measuring method for measuring the temperature, so that the influences of all environment factors to temperature measurement can be removed, and the measurement range is large.
Description
Technical field
The present invention relates to measurement mechanism, specifically is exactly temperature measuring equipment.
Background technology
Temperature survey is very common in industrial and agricultural production and daily life; Adopt thermometer under the general environment; Temperature survey under the particular surroundings then need rely on special devices or device, and for example, the heating furnace of hot environment, the temperature survey over-borrowing in the smelting furnace help the CCD temperature measuring equipment.
The temperature measurement system of a both useful CCD in the prior art, also useful two CCD, used ultimate principle all is based on the blackbody radiation basis.
For the temperature measurement system of a Near Infrared CCD, generally be on CCD, to install infrared fileter additional, obtain near infrared black white image.Because the spectral response of CCD is between 0.4～1.1 micron, 0.4～0.76 micron is the visible light section, and near-infrared image is the black white image of 0.8～1.1 micron of target.According to the blackbody radiation principle, the temperature of target is directly proportional with the brightness of pixel in the image.In the laboratory, utilize the high temperature black matrix to the calibration that system carries out temperature and brightness, just can be converted into temperature so in actual use according to the object brightness of actual measurement.
The shortcoming of the temperature measurement system of a Near Infrared CCD is that precision can't guarantee.Because thermometric is to be based upon on the basis of blackbody radiation, and in the reality the target of surveying be not desirable black matrix.In the laboratory, come base measuring temperature according to black matrix, but actual measurement target and non-black-body have so just brought deviation inevitably, this deviation can't be proofreaied and correct.The variation of environment is very big to the measurement result influence in addition; Because this kind method only is to confirm the temperature of target according to brightness of image; If have smog, water vapour to exist in the thermometric environment; With the brightness that influences image, and the absorption coefficient of light, the blackness of measured target of medium all exerts an influence to the brightness of image that obtains between observation point and the target.This defective is unsurmountable in this type of is measured.Temperature measurement range is limited; Owing to be to confirm temperature through the brightness of CCD; The auto iris function of CCD camera must be closed like this, otherwise the brightness value that can't obtain seeking unity of standard, can be in case close the auto iris function of CCD camera; The dynamic range of CCD is limited, the great like this measurement range that limits temperature.
Another kind is two near infrared CCD thermometrics, and this type of thermometric is to have used two near infrared CCD, has added the optical filter of different infrared bands separately, elects 0.85 micron as like the wave band that sees through of an optical filter, and another is selected in 0.95 micron.When measuring, can obtain the image of two different infrared bands,, can obtain the temperature of measured target through the relatively brightness and the high temperature of blackbody calibration of two width of cloth images.Name is called " based on the image temperature probe of colored and Near-infrared Double CCD " (document number CN2697613Y); Two ccd video cameras in its technical scheme are formed high temperature image probe 5; In two ccd video cameras one is a high-temperature color ccd video camera 3, another is high temperature Near Infrared CCD video camera 4; Two-path video picture signal (colour and near-infrared image signal) by high temperature image probe 5 obtains is handled through the laggard circumstances in which people get things ready for a trip degree analysis of collection, gamma correction scheduling algorithm in micro computer image and data processing equipment 8, obtains the comprehensive temperature information of target.
The advantage of this scheme is the environmental impact factor that has solved an above-mentioned CCD temp measuring system; Through the mode of colorimetric, can eliminate light absorption system basically, the blackness of measured target influences the precision of thermometric to the change of brightness of image owing to smog, water vapour and medium in the environment.
The shortcoming of this scheme is that CCD temp measuring system of texture ratio is complicated, and cost is slightly high.Precision can't guarantee, still can't eliminate owing to measured target is not the influence that black matrix brings, because temperature is demarcated with black matrix in the laboratory, if measured target is not an ideal black-body, when reality is used, still can bring deviation to the temperature of measuring.Temperature measurement range is limited, although can obtain the relative brightness of two CCD through the method for colorimetric, can't the auto iris of two CCD is synchronous, and in use still must close the auto iris function.
Summary of the invention
The purpose of this invention is to provide a kind of temperature measuring equipment, be intended to measure rapidly and accurately the temperature of each point in the temperature field to be measured.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: a kind of CCD temperature measuring equipment; Comprise the high temperature camera lens of being gone along with sb. to guard him by protection tube of the tested visual field of light inputting end direct detection, it is characterized in that: the bright dipping end of high temperature camera lens is provided with spectroscope, and spectroscope is told two-way light and exported colorimetric probe and Near Infrared CCD video camera respectively to; The signal that described colorimetric probe and Near Infrared CCD video camera record transfers to processor, and processor processes gets the temperature in the whole visual field.
Because the colorimetric of in this device, using probe is an infrared temperature probe, what colorimetric probe thermometric used is color comparison temperature measurement method, can eliminate all environmental factors to thermometric influence.Measurement range is big; In device owing to be to pop one's head in special-purpose colorimetric to obtain the temperature of RP; Other regional temperature obtains temperature through the relative brightness that the Near Infrared CCD video camera records, and Near Infrared CCD video camera auto iris function need not to close like this, as long as in the temperature measurement range of colorimetric probe; Through the adjusting of auto iris, can obtain the temperature in the tested zone.And the temperature-measuring range of colorimetric probe is bigger; Like the near infrared color comparison temperature measurement of Raytek probe, temperature-measuring range can be from 600 ℃～3000 ℃, and the colorimetric probe also has high precision (full scale ± 0.75%); High duplication (full scale ± 0.3%), high-temperature resolution (1 ℃).
Summary of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
In conjunction with Fig. 1; The CCD temperature measuring equipment comprises the high temperature camera lens 10 of being gone along with sb. to guard him by protection tube of the tested visual field of light inputting end direct detection; The bright dipping end of high temperature camera lens 10 is provided with spectroscope 20; Spectroscope 20 is told two-way light and is exported colorimetric probe 30 and Near Infrared CCD video camera 40 respectively to, and described colorimetric probe 30 transfers to processor with the signal that Near Infrared CCD video camera 40 records, and processor processes gets the temperature in the whole visual field.
Near Infrared CCD video camera 40 is gathered and is obtained near infrared black white image in the tested visual field; Colorimetric probe 30 is measured the temperature of RP in the tested visual field, the temperature that relatively obtains each point in the whole tested visual field of other brightness on the temperature that records through this RP and this RP brightness and the image.
The side of described colorimetric probe 30 is provided with high-temperature color ccd video camera 70; The entrance point of described colorimetric probe 30 is provided with semi-transparent semi-reflecting lens 60; The light one tunnel of injecting semi-transparent semi-reflecting lens 60 is through being transmitted through colorimetric probe 30, and another road is through reflexing to high-temperature color ccd video camera 70.
The light inlet of described high-temperature color ccd video camera 70 is provided with reflective mirror 80, and it is incident light that reflective mirror 80 receives the reflected light of injecting semi-transparent semi-reflecting lens 60, and reflected light is pointed to high-temperature color ccd video camera 70.The signal that described high-temperature color CD video camera 70 collects can show by direct display, is convenient to the observation to the visual field environment.
It is directly to measure that temperature measuring equipment great advantage provided by the invention is the temperature in the visual field.Colorimetric probe 30 can obtain in the temperature field certain any temperature in real time, and temperature and the relative brightness in the near-infrared image through this point just can obtain the temperature in the whole visual field again.And other method all is to calibrate through the black matrix in the laboratory to obtain certain any temperature, obtains the temperature in the whole visual field through the temperature of this point and the relative brightness of near-infrared image again.Because in the laboratory is to come base measuring temperature with black matrix; Very big with the environment for use difference at scene; So just brought thermometric error inevitably; And use the colorimetric probe can directly obtain the temperature of measured target point, thereby avoided effectively because the thermometric error that the difference between site environment and the ideal black-body is brought.
Another advantage is that temperature is a real-time measurement values; Obtain the temperature field in the whole visual field through the relative brightness on the near-infrared image; The aperture of Near Infrared CCD video camera is can be self-regulating like this; To obtain best brightness value, this can not influence thermometric result, has enlarged the dynamic range of whole system measurement temperature.And the aperture of single CCD system is can not be self-regulating, if aperture has become, thinks that so right brightness value has just become, and this just needs to demarcate with black matrix again.Concerning the two CCD systems of different-waveband, it is different that the aperture of two CCD is regulated, if aperture can be regulated automatically, the relative brightness of two CCD will change so, and this also needs to demarcate with black matrix again.So no matter concerning single CCD and two CCD systems, the auto iris function all must be closed, this will greatly limit the temperature measurement range of system.
Claims (5)
1. CCD temperature measuring equipment; A high temperature camera lens (10) of going along with sb. to guard him by protection tube that comprises the tested visual field of light inputting end direct detection; It is characterized in that: the bright dipping end of high temperature camera lens (10) is provided with spectroscope (20); Spectroscope (20) is told two-way light and is exported colorimetric probe (30) and Near Infrared CCD video camera (40) respectively to, and the signal that described colorimetric probe (30) and Near Infrared CCD video camera (40) record transfers to processor, and processor processes gets the temperature in the whole visual field.
2. CCD temperature measuring equipment according to claim 1; It is characterized in that: Near Infrared CCD video camera (40) collection obtains near infrared black white image in the tested visual field; Colorimetric probe (30) is measured the temperature of RP in the tested visual field, the temperature that relatively obtains each point in the whole tested visual field of other brightness on the temperature that records through this RP and this RP brightness and the image.
3. CCD temperature measuring equipment according to claim 1 and 2; It is characterized in that: spectroscope (20) is a semi-transparent semi-reflecting lens; The light one tunnel of injecting this spectroscope (20) is through being transmitted through colorimetric probe (30), and another road is through reflexing to Near Infrared CCD video camera (40).
4. CCD temperature measuring equipment according to claim 1 and 2; It is characterized in that: the side of described colorimetric probe (30) is provided with high-temperature color ccd video camera (70); The entrance point of described colorimetric probe (30) is provided with semi-transparent semi-reflecting lens (60); The light one tunnel of injecting semi-transparent semi-reflecting lens (60) is through being transmitted through colorimetric probe (30), and another road is through reflexing to high-temperature color ccd video camera (70).
5. CCD temperature measuring equipment according to claim 4; It is characterized in that: the light inlet of described high-temperature color ccd video camera (70) is provided with reflective mirror (80); It is incident light that reflective mirror (80) receives the reflected light of injecting semi-transparent semi-reflecting lens (60), and reflected light is pointed to high-temperature color ccd video camera (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210000302 CN102538983B (en) | 2011-12-20 | 2012-01-04 | CCD (Charge Coupled Device) temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110429677.3 | 2011-12-20 | ||
| CN201110429677 | 2011-12-20 | ||
| CN 201210000302 CN102538983B (en) | 2011-12-20 | 2012-01-04 | CCD (Charge Coupled Device) temperature measuring device |
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| CN102538983A true CN102538983A (en) | 2012-07-04 |
| CN102538983B CN102538983B (en) | 2013-11-06 |
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| CN 201210000302 Active CN102538983B (en) | 2011-12-20 | 2012-01-04 | CCD (Charge Coupled Device) temperature measuring device |
| CN2012200004507U Withdrawn - After Issue CN202471261U (en) | 2011-12-20 | 2012-01-04 | CCD temperature measuring device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837237A (en) * | 2012-11-23 | 2014-06-04 | 哈尔滨市三和佳美科技发展有限公司 | Dual-color infrared thermometer special for measuring train axle temperature |
| CN104215334A (en) * | 2014-08-14 | 2014-12-17 | 合肥瑞石测控工程技术有限公司 | Real-time online monitoring method of temperature of molten steel in RH refining furnace |
| CN105784121A (en) * | 2016-04-01 | 2016-07-20 | 华北电力大学 | Nine-channel adaptive large-range two-dimensional temperature field measuring device and measuring method thereof |
| CN105890776A (en) * | 2016-06-02 | 2016-08-24 | 中国工程物理研究院流体物理研究所 | Light splitting and coupling device |
| CN105910712A (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学 | Five-channel adaptive two-dimensional temperature field measurer and measurement method thereof |
| CN107450622A (en) * | 2017-08-18 | 2017-12-08 | 曹阳 | Furnace temperature of heating furnace intelligence control system and control method |
| CN111458033A (en) * | 2020-04-30 | 2020-07-28 | 中国科学院金属研究所 | Dual-wavelength temperature measuring device and method for steel-making furnace |
| CN112301421A (en) * | 2019-07-31 | 2021-02-02 | 内蒙古中环光伏材料有限公司 | Photosensitive rapid ending method suitable for large-size monocrystalline silicon |
| CN113483662A (en) * | 2021-04-29 | 2021-10-08 | 大连耐视科技有限公司 | Visual detection device for improving crystal pulling quality |
| CN114749495A (en) * | 2022-03-18 | 2022-07-15 | 武汉钢铁有限公司 | On-line detection and coupling correction control method for slab temperature field |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538983B (en) * | 2011-12-20 | 2013-11-06 | 合肥金星机电科技发展有限公司 | CCD (Charge Coupled Device) temperature measuring device |
| CN109030546B (en) * | 2018-07-23 | 2019-09-20 | 清华大学 | High temperature deformation and temperature measurement system and method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837237A (en) * | 2012-11-23 | 2014-06-04 | 哈尔滨市三和佳美科技发展有限公司 | Dual-color infrared thermometer special for measuring train axle temperature |
| CN104215334A (en) * | 2014-08-14 | 2014-12-17 | 合肥瑞石测控工程技术有限公司 | Real-time online monitoring method of temperature of molten steel in RH refining furnace |
| CN105784121B (en) * | 2016-04-01 | 2018-10-26 | 华北电力大学 | The a wide range of two-dimension temperature field measurement device of nine channel adaptives and its measurement method |
| CN105784121A (en) * | 2016-04-01 | 2016-07-20 | 华北电力大学 | Nine-channel adaptive large-range two-dimensional temperature field measuring device and measuring method thereof |
| CN105910712A (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学 | Five-channel adaptive two-dimensional temperature field measurer and measurement method thereof |
| CN105910712B (en) * | 2016-04-01 | 2018-10-26 | 华北电力大学 | Five-channel self-adaption two-dimensional temperature field measuring apparatus and its measurement method |
| CN105890776A (en) * | 2016-06-02 | 2016-08-24 | 中国工程物理研究院流体物理研究所 | Light splitting and coupling device |
| CN107450622A (en) * | 2017-08-18 | 2017-12-08 | 曹阳 | Furnace temperature of heating furnace intelligence control system and control method |
| CN112301421A (en) * | 2019-07-31 | 2021-02-02 | 内蒙古中环光伏材料有限公司 | Photosensitive rapid ending method suitable for large-size monocrystalline silicon |
| CN111458033A (en) * | 2020-04-30 | 2020-07-28 | 中国科学院金属研究所 | Dual-wavelength temperature measuring device and method for steel-making furnace |
| CN113483662A (en) * | 2021-04-29 | 2021-10-08 | 大连耐视科技有限公司 | Visual detection device for improving crystal pulling quality |
| CN114749495A (en) * | 2022-03-18 | 2022-07-15 | 武汉钢铁有限公司 | On-line detection and coupling correction control method for slab temperature field |
| CN114749495B (en) * | 2022-03-18 | 2023-11-17 | 武汉钢铁有限公司 | On-line detection and coupling correction control method for slab temperature field |
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| CN202471261U (en) | 2012-10-03 |
| CN102538983B (en) | 2013-11-06 |
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