CN111289185A - Tunnel water leakage detection system based on multispectral imaging technology - Google Patents
Tunnel water leakage detection system based on multispectral imaging technology Download PDFInfo
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- CN111289185A CN111289185A CN202010264560.3A CN202010264560A CN111289185A CN 111289185 A CN111289185 A CN 111289185A CN 202010264560 A CN202010264560 A CN 202010264560A CN 111289185 A CN111289185 A CN 111289185A
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- infrared
- visible light
- detection
- module
- detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
Abstract
The invention discloses a tunnel water leakage detection system based on a multispectral imaging technology, wherein an infrared lens module images infrared heat radiation of a detection target onto a photosensitive surface of a detector through an infrared focusing module, a visible lens module images the detection target onto the photosensitive surface of a visible light detector through a visible light focusing system, and a background processing module combines visible light imaging and a thermal infrared multispectral image to output a detection result. The tunnel detection construction method comprises the following steps: 1) measurement preparation; 2) infrared inspection: 3) manually spraying paint; 4) opening a hole and sampling; 5) and (6) analyzing the data. The infrared data acquisition system acquires infrared image information, visible light carries out accurate qualitative and quantitative analysis on a suspected water leakage target point of the alarm of the intelligent analysis system in a bright environment, and the imaging of the visible light is combined with a thermal infrared multispectral image to ensure that naked eyes can accurately identify and detect; the high-precision thermal infrared detector is used for tunnel detection construction, so that the detection efficiency is improved, the accuracy is improved, and the time cost is reduced.
Description
Technical Field
The invention relates to the technical field related to tunnel water leakage detection, in particular to a tunnel water leakage detection system based on a multispectral imaging technology.
Background
The infrared temperature identification method has the advantages of being high in temperature identification rate, low in false alarm rate, clear in image, high in intelligent analysis degree and the like. At present, most of high-speed rail tunnels, urban tunnels, river-crossing tunnels and mine tunnels adopt a handheld thermal infrared detection mode. The detection mode has slow detection speed and small coverage area, and has the biggest defect that the detection has missed points. The coordinates of the leakage detection position cannot be positioned in time, so that the position cannot be accurately positioned when the board is opened for repair, and great carelessness exists.
Disclosure of Invention
The invention aims to provide a tunnel leakage water detection system based on a multispectral imaging technology, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a tunnel water leakage detection system based on a multispectral imaging technology comprises an infrared detection module, a visible light detection module and a background processing module, wherein the infrared detection module comprises an infrared lens module, an infrared focusing module and an infrared detector, the visible light detection module comprises a visible light lens module, a visible light focusing system and a visible light detector, the infrared lens module images infrared heat radiation of a detection target on a photosensitive surface of the detector through the infrared focusing module, the visible light lens module images the detection target on the photosensitive surface of the visible light detector through the visible light focusing system, signal output ends of the infrared detection module and the visible light detection module are respectively connected with a signal input end of the background processing module, the infrared detection module and the visible light detection module transmit detection signals to the background processing module, and the background processing module combines the multispectral visible light imaging and the thermal infrared image to output detection results, besides the device, the system also comprises visible light and thermal infrared detection equipment, a servo turntable, a display control system (PC host), a vehicle-mounted power supply and a vehicle.
Preferably, the construction method for detection comprises the following steps:
(1) measurement preparation: arriving at a measurement place in advance, installing and debugging equipment, and confirming a measurement environment;
(2) infrared inspection;
(3) manual painting: manually operating a manual paint spraying rod to align the dome for spraying according to the position of the light spot foot point of the infrared positioning director;
(4) opening a hole for sampling: perforating the position of the leakage point, and photographing and sampling the position of the dome leakage point;
(5) and (3) data analysis: and carrying out effective data acquisition on the visible light and thermal infrared pictures acquired by the high-precision thermal infrared detector, and finishing and outputting a detection report after the acquisition is finished.
Preferably, the infrared inspection in the step (2) comprises the following steps;
1) measuring the ambient temperature in the tunnel by using a thermal infrared hand-held temperature measuring instrument, and inputting the measured ambient temperature into a system to automatically judge the comparison between the ambient temperature and the temperature of an actual leakage point;
2) the inspection vehicle moves at a certain travelling speed to enter a tunnel for detection, a high-precision thermal infrared detector is mounted at the top of the inspection vehicle, when a suspected leakage point position appears, whether a tunnel dome leaks or not is judged by observing the thermal infrared imaging effect of the high-precision thermal infrared detector, when the leakage point is confirmed, an infrared positioning pointing instrument is arranged, and a switch is turned on to enable the position of a light spot falling foot to be the leakage point position.
Compared with the prior art, the invention has the beneficial effects that:
1) the infrared data acquisition system acquires infrared image information, visible light carries out accurate qualitative and quantitative analysis on a suspected water leakage target point of the alarm of the intelligent analysis system in a bright environment, and the imaging of the visible light is combined with a thermal infrared multispectral image to ensure that naked eyes can accurately identify and detect.
2) The self-closed design of the visible lens module and the visible focusing system ensures the appearance and simultaneously enhances the use flexibility and the installation convenience of a single system.
3) The tunnel detection construction is carried out by using the high-precision thermal infrared detector, so that the detection efficiency is effectively improved, the accuracy is improved, and the time cost is reduced.
4) Compared with the traditional detection mode: the traditional method can identify the water only when the water leaks and drips obviously, and the patent can identify the water at the initial stage of water leakage (a covering plate with a certain thickness is arranged on the surface of the shield body, the water is arranged between the shield body and the covering plate in the interlayer at the initial stage of water leakage, the traditional method can not detect the water by common eyes, and the detection can be only realized by adopting the patent); since water will flow in the interlayer, the point of seepage of water is usually not at the same point as the source of the seepage. The traditional method can only identify seepage points, and the patent can directly detect seepage sources, seepage flow directions and seepage points through imaging. The positioning is more accurate, and the troubleshooting accuracy is higher.
Drawings
FIG. 1 is a schematic diagram of the structure of a high-precision thermal infrared detector;
FIG. 2 is a schematic structural view of an IR lens module;
FIG. 3 is a schematic structural view of a visible light lens module;
fig. 4 is a schematic structural diagram of the visible light detection module.
In the figure: the device comprises a visible light lens 1, a visible light lens focal length adjusting mechanism 2, a visible light CCO 3, an infrared lens 4, a focusing motor 5, an infrared detector 6, a microswitch 7, an adjusting cam 8 and an angle sensor 9.
Detailed Description
The embodiment of the application solves the problems in the prior art by providing a tunnel leakage water detection system based on a multispectral imaging technology; the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-4, the present embodiment provides a tunnel leakage water detection system based on a multispectral imaging technology, including an infrared detection module, a visible light detection module and a background processing module, where the infrared detection module includes an infrared lens module, an infrared focusing module and an infrared detector, the visible light detection module includes a visible light lens module, a visible light focusing system and a visible light detector, the infrared lens module images infrared heat radiation of a detection target onto a photosensitive surface of the detector through the infrared focusing module, the visible light lens module images the detection target onto the photosensitive surface of the visible light detector through the visible light focusing system, signal output ends of the infrared detection module and the visible light detection module are respectively connected with a signal input end of the background processing module, the infrared detection module and the visible light detection module transmit detection signals to the background processing module, the background processing module is combined with the visible light imaging and the thermal infrared multispectral image to output a detection result, and the system further comprises visible light and thermal infrared detection equipment, a servo turntable, a display control system (PC host), a vehicle-mounted power supply and a vehicle loader besides the device.
The detection construction method comprises the following steps:
(1) measurement preparation: arriving at a measurement place in advance, installing and debugging equipment, and confirming a measurement environment;
(2) infrared inspection;
(3) manual painting: manually operating a manual paint spraying rod to align the dome for spraying according to the position of the light spot foot point of the infrared positioning director;
(4) opening a hole for sampling: perforating the position of the leakage point, and photographing and sampling the position of the dome leakage point;
(5) and (3) data analysis: and carrying out effective data acquisition on the visible light and thermal infrared pictures acquired by the high-precision thermal infrared detector, and finishing and outputting a detection report after the acquisition is finished.
The infrared inspection in the step (2) comprises the following steps;
1) measuring the ambient temperature in the tunnel by using a thermal infrared hand-held temperature measuring instrument, and inputting the measured ambient temperature into a system to automatically judge the comparison between the ambient temperature and the temperature of an actual leakage point;
2) the inspection vehicle moves at a certain travelling speed to enter a tunnel for detection, a high-precision thermal infrared detector is mounted at the top of the inspection vehicle, when a suspected leakage point position appears, whether a tunnel dome leaks or not is judged by observing the thermal infrared imaging effect of the high-precision thermal infrared detector, when the leakage point is confirmed, an infrared positioning pointing instrument is arranged, and a switch is turned on to enable the position of a light spot falling foot to be the leakage point position.
Example two
Referring to fig. 1-4, a further improvement is made on the basis of embodiment 1:
the background processing module is combined with the visible light imaging and the thermal infrared multispectral image to output a detection result; the infrared lens module adopts a positive-negative-positive Kock three-piece structure, two positive lenses adopt germanium materials, and a negative film adopts a zinc sulfide material; the visible lens module adopts a plurality of separated meniscus lenses, and the bending directions of the lenses are all bent to the diaphragm; the infrared focusing module comprises an external copper cam and a microswitch limiting structure, the external copper cam ensures that the focusing lens group performs linear motion, and the microswitch limiting structure ensures that all components do not exceed a designed stroke in the focusing process; the visible light lens module and the visible light focusing system adopt a self-closed design, and the use flexibility and the installation convenience of a single set of system are guaranteed.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A tunnel water leakage detection system based on a multispectral imaging technology is characterized in that: the infrared detection module comprises an infrared lens module, an infrared focusing module and an infrared detector, the visible light detection module comprises a visible light lens module, a visible light focusing system and a visible light detector, the infrared lens module images the infrared heat radiation of a detection target on the photosensitive surface of the detector through the infrared focusing module, the visible light lens module images the detection target on the photosensitive surface of the visible light detector through the visible light focusing system, the signal output ends of the infrared detection module and the visible light detection module are respectively connected with the signal input end of the background processing module, the infrared detection module and the visible light detection module transmit the detection signal to the background processing module, the background processing module combines the visible light imaging and the thermal infrared multispectral image to output the detection result, besides the device, the system also comprises visible light and thermal infrared detection equipment, a servo turntable, a display control system (PC host), a vehicle-mounted power supply and a vehicle.
2. The system according to claim 1, wherein the tunnel leakage water detection system based on multispectral imaging technology comprises: the detection construction method comprises the following steps:
(1) measurement preparation: arriving at a measurement place in advance, installing and debugging equipment, and confirming a measurement environment;
(2) infrared inspection;
(3) manual painting: manually operating a manual paint spraying rod to align the dome for spraying according to the position of the light spot foot point of the infrared positioning director;
(4) opening a hole for sampling: perforating the position of the leakage point, and photographing and sampling the position of the dome leakage point;
(5) and (3) data analysis: and carrying out effective data acquisition on the visible light and thermal infrared pictures acquired by the high-precision thermal infrared detector, and finishing and outputting a detection report after the acquisition is finished.
3. The system for detecting tunnel water leakage based on multispectral imaging technology as claimed in claim 2, wherein the infrared inspection in the step (2) comprises the following steps;
1) measuring the ambient temperature in the tunnel by using a thermal infrared hand-held temperature measuring instrument, and inputting the measured ambient temperature into a system to automatically judge the comparison between the ambient temperature and the temperature of an actual leakage point;
2) the inspection vehicle moves at a certain travelling speed to enter a tunnel for detection, a high-precision thermal infrared detector is mounted at the top of the inspection vehicle, when a suspected leakage point position appears, whether a tunnel dome leaks or not is judged by observing the thermal infrared imaging effect of the high-precision thermal infrared detector, when the leakage point is confirmed, an infrared positioning pointing instrument is arranged, and a switch is turned on to enable the position of a light spot falling foot to be the leakage point position.
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| CN202010264560.3A CN111289185A (en) | 2020-04-07 | 2020-04-07 | Tunnel water leakage detection system based on multispectral imaging technology |
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| CN202010264560.3A CN111289185A (en) | 2020-04-07 | 2020-04-07 | Tunnel water leakage detection system based on multispectral imaging technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984288A (en) * | 2021-10-22 | 2022-01-28 | 中国能源建设集团江苏省电力设计院有限公司 | Cable tunnel lining water leakage detection device and method |
| CN115457735A (en) * | 2022-07-21 | 2022-12-09 | 山东大学 | Inrush water wireless monitoring device and method based on infrared thermal imaging and video monitoring |
| CN116299485A (en) * | 2023-05-16 | 2023-06-23 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
| CN113984288B (en) * | 2021-10-22 | 2024-05-03 | 中国能源建设集团江苏省电力设计院有限公司 | Device and method for detecting leakage water of cable tunnel lining |
-
2020
- 2020-04-07 CN CN202010264560.3A patent/CN111289185A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984288A (en) * | 2021-10-22 | 2022-01-28 | 中国能源建设集团江苏省电力设计院有限公司 | Cable tunnel lining water leakage detection device and method |
| CN113984288B (en) * | 2021-10-22 | 2024-05-03 | 中国能源建设集团江苏省电力设计院有限公司 | Device and method for detecting leakage water of cable tunnel lining |
| CN115457735A (en) * | 2022-07-21 | 2022-12-09 | 山东大学 | Inrush water wireless monitoring device and method based on infrared thermal imaging and video monitoring |
| CN116299485A (en) * | 2023-05-16 | 2023-06-23 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
| CN116299485B (en) * | 2023-05-16 | 2023-12-26 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
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Application publication date: 20200616 |