CN203490378U - Infrared thermal imaging system applied to dam panel cavity detection - Google Patents
Infrared thermal imaging system applied to dam panel cavity detection Download PDFInfo
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- CN203490378U CN203490378U CN201320628298.1U CN201320628298U CN203490378U CN 203490378 U CN203490378 U CN 203490378U CN 201320628298 U CN201320628298 U CN 201320628298U CN 203490378 U CN203490378 U CN 203490378U
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- 238000001931 thermography Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 13
- 230000000149 penetrating effect Effects 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an infrared thermal imaging system applied to dam panel cavity detection. The infrared thermal imaging system applied to the dam panel cavity detection comprises a processing unit. The processing unit is connected with an infrared thermal imager and a communication unit, the infrared thermal imager is used for dam panel cavity detection, and the communication unit is used for communicating with a remote terminal. By employing the infrared thermal imaging system, the greatest disadvantage of a ground penetrating radar is that the higher the number of layers of panel steel bars is, the higher the density of the steel bars is, and the larger the protection layer thickness is, a positive-phase reflecting interface between a concrete zone and a cushion zone of the panel is even not obvious, and the ground penetrating radar cannot identify the concrete zone and the cushion zone of the panel through images is overcome.
Description
Technical field
The utility model relates to the dam face slab inspection field of coming to nothing, and is especially a kind ofly applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks.
Background technology
Ground penetrating radar is to utilize the nondestructive detection instrument of broadband high frequency electromagnetic wave signal probing medium locations of structures and distribution, during work under radar host computer is controlled, pulse produces periodically nanosecond broadband high frequency electromagnetic wave signal the emitting antenna of directly feeding, when being coupled to underground signal running into medium heterogeneous body (face) on travel path via transmitting, produce reflected signal, the receiving antenna that is positioned at ground is directly transferred to receiver after receiving underground echo, mode with level diagram shows after treatment, can be used to judge the degree of depth of buried target, size, the characteristic parameters such as position.
Dam face slab comes to nothing while checking, because having highly permeable for this kind of dam body, the interior underground water without free state of dam body more than phreatic line, so the stuff that come to nothing are only a kind of medium of air; For the non-district of coming to nothing, concrete lower one deck medium is bed course district.Therefore, when nothing is come to nothing phenomenon, the boundary reflection of panel concrete and bed course district, bed course district and transition bed is negative reflection, and while there is coming to nothing phenomenon, boundary reflection is normal reflection.With respect to ground exploring radar antenna, panel surface opposed flattened, makes the coupling of antenna and panel good, and equal propagation is consistent with the Amplitude Comparison that transmits and receives signal under conditioned reflex, is also conducive to distinguish the size of signal amplitude.Ground penetrating radar image is divided into 3 types: the 1st type is obviously to distinguish the reflection of steel bar layer positive phase, minus phase reflection with panel concrete and bed course district, the 2nd type is the minus phase reflection that can obviously distinguish the reflection of steel bar layer positive phase and bed course district, but panel concrete and bed course district reflecting interface are not obvious or disappearance, the 3rd type is obviously to distinguish steel bar layer positive phase reflection, but the minus phase reflecting interface in panel concrete and bed course interval does not exist and by positive phase sphere generation.The shortcoming of ground penetrating radar maximum is exactly that to lay the number of plies more when slab reinforcement; reinforcing bar density is closeer; protective layer thickness is less; the minus phase reflecting interface in panel concrete and bed course interval is more not obvious; image None-identified panel concrete district and bed course district, also just cannot inquire into measure whether have the district of coming to nothing.
When slab reinforcement, to lay the number of plies more; reinforcing bar density is closeer, and protective layer thickness is less, and the minus phase reflecting interface in panel concrete and bed course interval is more not obvious; image None-identified panel concrete district and bed course district, also just cannot inquire into measure whether have the district of coming to nothing.Need seek a kind of slab reinforcement can not affect the new technology of detection, namely the variation in the district of coming to nothing under panel can be reflected on panel and can receive this variation.Infrared thermal imaging technique is the thermal capacity at normal position and thermal capacity inconsistent at the position of coming to nothing that utilizes panel, when environment temperature changes, the temperature changing speed at normal position is not identical, in panel outside, just can see temperature contrast, also with regard to having realized the rate temperature change difference in the district of coming to nothing under panel, on panel, reflect.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of infra-red thermal imaging system that dam face slab comes to nothing and checks that is applied to.
The utility model adopts following scheme to realize: be a kind ofly applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks, it is characterized in that: comprise a processing unit, described processing unit connects an infrared thermography and a communication unit, described infrared thermography is for dam face slab inspections of coming to nothing, and described communication unit is used for carrying out communication with a remote terminal.
In the utility model one embodiment, described processing unit is a single-chip microcomputer or ARM module.
In the utility model one embodiment, described communication unit is a GPRS module, wifi module or gsm module.
In the utility model one embodiment, described remote terminal is an industrial computer or a mobile phone terminal.
It is more that the utility model can be laid the number of plies at slab reinforcement; reinforcing bar density is closeer; protective layer thickness is less; the minus phase reflecting interface in panel concrete and bed course interval is more not obvious; when ground penetrating radar is passed through image None-identified panel concrete district and bed course district, make up the disadvantage of ground penetrating radar.
For making the purpose of this utility model, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the utility model be described in further detail.
Accompanying drawing explanation
Fig. 1 is system principle diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of infra-red thermal imaging system that dam face slab comes to nothing and checks that is applied to, comprise a processing unit, described processing unit connects an infrared thermography and a communication unit, described infrared thermography is for dam face slab inspections of coming to nothing, and described communication unit is used for carrying out communication with a remote terminal.
Preferably, described processing unit is a single-chip microcomputer or ARM module, and single-chip microcomputer model can be AT89C51, AT89S51 or MSP430 etc.Described communication unit is a GPRS module or wifi module, corresponding, described remote terminal is an industrial computer; Described communication unit can be also a gsm module, corresponding, described remote terminal is a mobile phone terminal.
Infrared Thermography Technology can show the temperature field of body surface intuitively, not affected by high light, be widely used, infrared thermal imaging can be measured the height of body surface each point temperature simultaneously, the temperature field that shows intuitively body surface, and show with image format, due to infrared thermal imaging be detection of a target object infrared emanation energy size and unlike low-light strengthens instrument, there will be halation or close in high light environment time, therefore do not like high light impact, according to this feature of infrared imaging, and the thermal capacity at the thermal capacity at the normal position of panel and the position of coming to nothing is inconsistent, therefore the temperature changing speed at normal position is not identical when environment temperature changes, in panel outside, just can see temperature contrast.Plate thickness is little, and the temperature variation of panel surface can have influence on lower one deck medium, and the temperature of layer dielectric also can reflect by panel.Thereby the reinforcing bar in panel is just very little on the impact of Infrared Thermography Technology, just in time made up the shortcoming of ground penetrating radar maximum.In the detection of coming to nothing, the thermal conductivity of reinforced concrete panel is the highest, and taking second place in bed course district, is finally air, and air thermal conductivity is obviously low than other 2 kinds of media.Therefore under solar radiation, panel absorbs the radiations heat energy from sunlight, exists the panel zone coming to nothing because air heat-conductive characteristic is poor, to make temperature raise very fast, and the panel in the non-district of coming to nothing is because heat easily raises slower to the conduction of dam body deep.At night, no matter be that the district of coming to nothing is also the non-district of coming to nothing, the heat that absorb their daytimes is by panel to air radiation, and panel temperature declines, and the district's panel that comes to nothing is due to the low dam body heat supplement that is difficult to obtain of lower layer of air pyroconductivity, and temperature is lower; The panel in the non-district of coming to nothing is due to the dam body heat supplement that is easy to get of the bed course district thermal conductivity ratio air Gao Ergeng under it, and temperature is relatively high.Hence one can see that, adopts infrared thermography to detect panel and come to nothing and have good Geophysical Condition, can generally investigate the panel situation of coming to nothing.Utilize high temperature exceptions area and low temperature exceptions area (claiming temperature anomaly district) period in the afternoon the period in the morning, thereby analyze analysis temperature abnormal formation reason, meet and because coming to nothing below panel, exist the temperature anomaly district that causes to explain, just regard as below panel and exist and come to nothing.
In order to allow those skilled in the art better understand hardware structure of the present utility model, below in conjunction with whole hardware structure, its principle of work and flow process are described further.
By using infrared thermography to detect dam face slab, and by communication unit, the thermal-induced imagery collecting is transferred to remote terminal and identifies.Remote terminal can be divided into 6 basic steps thermal-induced imagery is processed:
(1) check the thermal-induced imagery of panel, by panel surface color, the dark or more regional extent of residue, claims empty exceptions area;
(2) search high temperature exceptions area and low temperature exceptions area the period in the morning the period in the afternoon, claim temperature anomaly district;
(3) region without temperature anomaly by infrared thermal imaging, is judged to be infrared non-exceptions area;
(4) analysis temperature abnormal formation reason (comprising panel surface color deeply or the more outward appearance reason of residue), non-come to nothing and cause abnormal as dark in panel surface color, is infrared non-exceptions area by corresponding regional determination;
(5) if within Bu Xu exceptions area, temperature anomaly district, or high and low temperature exceptions area cannot coincide and may be interpreted as to come to nothing and cause, this temperature anomaly region is decided to be infrared anomaly district;
(6) finally draw a circle to approve the scope boundary line in infrared non-exceptions area and infrared anomaly district.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. one kind is applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks, it is characterized in that: comprise a processing unit, described processing unit connects an infrared thermography and a communication unit, described infrared thermography is for dam face slab inspections of coming to nothing, and described communication unit is used for carrying out communication with a remote terminal.
2. be according to claim 1ly applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks, it is characterized in that: described processing unit is a single-chip microcomputer or ARM module.
3. be according to claim 1ly applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks, it is characterized in that: described communication unit is a GPRS module, wifi module or gsm module.
4. be according to claim 1ly applied to the infra-red thermal imaging system that dam face slab comes to nothing and checks, it is characterized in that: described remote terminal is an industrial computer or a mobile phone terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628298.1U CN203490378U (en) | 2013-10-12 | 2013-10-12 | Infrared thermal imaging system applied to dam panel cavity detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320628298.1U CN203490378U (en) | 2013-10-12 | 2013-10-12 | Infrared thermal imaging system applied to dam panel cavity detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062300A (en) * | 2014-07-07 | 2014-09-24 | 温州大学 | Seawall nondestructive testing method based on infrared ray thermal imaging technology |
| CN104988884A (en) * | 2015-05-19 | 2015-10-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Concrete faced rock-fill dam void deformation monitoring device and installation method thereof |
| CN108444936A (en) * | 2018-03-27 | 2018-08-24 | 重庆交通大学 | A kind of nondestructive detection system that concrete filled steel tube comes to nothing and method |
| CN113622239A (en) * | 2021-09-28 | 2021-11-09 | 吴海涛 | Local strengthening method for road subgrade |
-
2013
- 2013-10-12 CN CN201320628298.1U patent/CN203490378U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062300A (en) * | 2014-07-07 | 2014-09-24 | 温州大学 | Seawall nondestructive testing method based on infrared ray thermal imaging technology |
| CN104988884A (en) * | 2015-05-19 | 2015-10-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Concrete faced rock-fill dam void deformation monitoring device and installation method thereof |
| CN108444936A (en) * | 2018-03-27 | 2018-08-24 | 重庆交通大学 | A kind of nondestructive detection system that concrete filled steel tube comes to nothing and method |
| CN108444936B (en) * | 2018-03-27 | 2020-05-22 | 重庆交通大学 | Nondestructive testing system and method for concrete filled steel tube void |
| CN113622239A (en) * | 2021-09-28 | 2021-11-09 | 吴海涛 | Local strengthening method for road subgrade |
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