CN112415528B - Tunnel deformation on-line monitoring system and detection control method thereof - Google Patents
Tunnel deformation on-line monitoring system and detection control method thereof Download PDFInfo
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- CN112415528B CN112415528B CN202011158402.6A CN202011158402A CN112415528B CN 112415528 B CN112415528 B CN 112415528B CN 202011158402 A CN202011158402 A CN 202011158402A CN 112415528 B CN112415528 B CN 112415528B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000008054 signal transmission Effects 0.000 claims abstract description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 14
- 230000005856 abnormality Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
Abstract
The invention provides a tunnel deformation on-line monitoring system, which comprises: a plurality of tunnel data detection and transmission units, each tunnel data detection and transmission unit comprising: the 532nm green laser ranging module is arranged at the top end and can rotate around the axis; the control module is used for controlling the 532nm green laser ranging module to work and acquiring deformation information of the tunnel according to the data of the 532nm green laser ranging module; the signal transmission module is connected with the control module; the reflectors are arranged at two sides of the cross section of the tunnel at intervals, and are of a hemispherical structure with a reflecting layer plated on the surface; and the cloud processing end is used for carrying out early warning according to the tunnel deformation information of each tunnel data detection and transmission unit. The invention further provides a detection control method of the tunnel deformation on-line monitoring system.
Description
Technical Field
The invention relates to a tunnel deformation online monitoring system and a detection control method thereof.
Background
Tunnel facilities have become an important component of traffic systems at present. With the expansion of traffic scale, the tunnel facilities are more and more complex in environment. For example, the overlapping area between the area under the mountain or the large building member and the tunnel is a high-risk area, and disasters such as settlement, collapse, displacement and the like are liable to occur, and it is necessary to monitor the tunnels in these areas all-weather and uninterrupted for disaster prevention and danger avoidance.
In the prior art, the deformation of the tunnel structure is generally monitored by adopting modes such as laser ranging and the like. However, the control method of the monitoring technology in the prior art is complex, and the laser device is generally disposed at one side. This arrangement has the following disadvantages: because tunnel deformation generally occurs at the top first, this kind of arrangement is difficult to fast, accurate deformation at feedback top.
Disclosure of Invention
The invention provides a tunnel deformation on-line monitoring system and a detection control method thereof, which can effectively solve the problems.
The invention is realized in the following way:
the invention further provides a tunnel deformation on-line monitoring system based on a 532nm green laser ranging module, which comprises:
a plurality of tunnel data detection and transmission units, each of which includes:
the 532nm green laser ranging module is arranged at the top end, and the 532nm green laser ranging module can rotate around the axis of the 532nm green laser ranging module;
the control module is used for controlling the 532nm green laser ranging module to work and acquiring deformation information of the tunnel according to the data of the 532nm green laser ranging module;
the signal transmission module is connected with the control module; and
the reflectors are arranged at two sides of the cross section of the tunnel at intervals, and are of a hemispherical structure with a reflecting layer plated on the surfaces;
and the cloud processing end is used for carrying out early warning according to the tunnel deformation information of each tunnel data detection and transmission unit.
As a further improvement, the 532nm green laser ranging module is used for filtering out indirectly reflected laser and accurately ranging according to the laser directly reflected by the reflecting mirror.
As a further improvement, the reflectors are symmetrically arranged on two sides of the 532nm green laser ranging module along the central axis of the tunnel.
The invention further provides a detection control method of the tunnel deformation on-line monitoring system, which comprises the following steps:
s1, controlling the 532nm green laser ranging module to rotate and sequentially scan through all reflectors on the cross section of the tunnel, and obtaining the 532nm green laserThe initial distance from the light ranging module to each mirror is defined as A n，m Wherein n is the serial number of each reflector, and m is the serial number of each 532nm green laser ranging module;
s2, controlling the 532nm green laser ranging module to rotate at preset intervals to sequentially scan through all the reflectors on the cross section of the tunnel, and obtaining the actual distance from the 532nm green laser ranging module to each reflector, wherein the actual distance is defined as B n，m ；
S3, obtaining the absolute value of the difference value from each reflector to the 532nm green laser ranging module, and marking the absolute value as C n，m Wherein C n，m ＝|B n，m -A n，m |；
S4, the C is carried out n，m And transmitting the data to the cloud processing end.
As a further improvement, in step S1 or S2, the 532nm green laser ranging module filters out the indirectly reflected laser, and performs accurate ranging according to the laser directly reflected by the reflecting mirror.
As a further improvement, in step S4, further comprising:
s41, judging C n，m Whether or not is greater than the first threshold D, when C n，m C ≡D n，m ' and i is the number greater than or equal to the first threshold D.
As a further improvement, in step S4, further comprising:
s42, obtaining the ratio eta=i/n of i and n, and carrying out early warning at different levels along with the rising of eta.
As a further improvement, in step S4, further comprising:
s43, the cloud processing end further performs the following steps according to C n，m ' judging the specific deformation position of the cross section of the tunnel.
The beneficial effects of the invention are as follows: firstly, the 532nm green laser ranging module is creatively arranged at the top end of the cross section of the tunnel, so that any deformation of the top end which is most easy to generate deformation can be directly and quickly reacted to the 532nm green laser ranging moduleSo that the light source can directly and rapidly change with different reflecting mirrors; thereby improving the corresponding speed and accuracy of the whole system. Secondly, the invention can also perform early warning of different grades according to the distance from the 532nm green laser ranging module to the reflector; in addition, according to C i，m And judging the specific position of the deformation of the cross section of the tunnel, further improving the response speed and providing a basis for subsequent maintenance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an installation schematic diagram of a tunnel deformation online monitoring system based on a 532nm green laser ranging module provided by an embodiment of the invention.
Fig. 2 is a schematic diagram of laser ranging in a tunnel deformation online monitoring system based on a 532nm green laser ranging module provided by an embodiment of the invention.
Fig. 3 is a frame diagram of a tunnel deformation online monitoring system based on a 532nm green laser ranging module provided by an embodiment of the invention.
Fig. 4 is a flowchart of a detection control method in a tunnel deformation online monitoring system based on a 532nm green laser ranging module provided by an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1-3, an embodiment of the present invention provides a tunnel deformation online monitoring system based on a 532nm green laser ranging module, including:
a plurality of tunnel data detecting and transmitting units 100, each of which tunnel data detecting and transmitting units 100 includes:
the 532nm green laser ranging module 11 is arranged at the top end, wherein the 532nm green laser ranging module can rotate around the axis of the 532nm green laser ranging module;
the control module 10 is used for controlling the 532nm green laser ranging module 11 to work and acquiring deformation information of the tunnel according to the data of the 532nm green laser ranging module 11;
a signal transmission module 13 connected to the control module 10; and
a plurality of reflectors 12 arranged at two sides of the cross section of the tunnel at intervals, wherein the reflectors 12 are of a hemispherical structure with a reflecting layer plated on the surfaces;
the cloud processing end 200 is configured to perform early warning according to the tunnel deformation information of each tunnel data detection and transmission unit 100.
As a further improvement, the 532nm green laser ranging module 11 is configured to filter out the indirectly reflected laser, and perform accurate ranging according to the laser directly reflected by the reflecting mirror 12. Referring to fig. 2, the 532nm green laser ranging module 11 may sequentially pass through light paths of light L1, L2, L3, etc. in the process of scanning and ranging the reflecting mirror 12, and in these light paths, L2 is directly reflected back by the reflecting mirror 12, which reaches a predetermined intensity, so that light rays with accurate ranging can be used. The light L1 is reflected twice by the tunnel surface and the reflecting mirror 12 in order, and it is difficult to reach a predetermined intensity, and is not used as a light for accurate ranging. L3 is not reflected back to the 532nm green laser ranging module 11, and therefore cannot be used as test data.
The reflecting mirror 12 has a hemispherical structure with a reflecting layer plated on the surface, so that it can be ensured that at least one optical path passing through the center of the 532nm green laser ranging module 11 can be reflected in the scanning process, and accurate ranging can be performed.
As a further improvement, the reflecting mirrors 12 are symmetrically arranged at two sides of the 532nm green laser ranging module 11 along the central axis of the tunnel.
Referring to fig. 4, the embodiment of the invention further provides a detection control method of the tunnel deformation online monitoring system, which includes the following steps:
s1, controlling the 532nm green laser ranging module 11 to rotate and sequentially scan through all the reflectors 12 on the cross section of the tunnel, and obtaining the initial distance from the 532nm green laser ranging module 11 to each reflector 12, which is defined as A n，m Wherein n is the serial number of each reflecting mirror 12, and m is the serial number of each 532nm green laser ranging module 11;
s2, controlling the 532nm green laser ranging module 11 to rotate and sequentially scan through all the reflectors 12 on the cross section of the tunnel at preset intervals, and obtaining the actual distance from the 532nm green laser ranging module 11 to each reflector 12, which is defined as B n，m ；
S3, obtaining the absolute value of the difference value from each reflecting mirror 12 to the 532nm green laser ranging module 11, and marking as C n，m Wherein C n，m ＝|B n，m -A n，m |；
S4, the C is carried out n，m To the cloud processing terminal 200.
As a further improvement, in step S1 or S2, the 532nm green laser ranging module 11 filters out the indirectly reflected laser light, and performs accurate ranging according to the laser light directly reflected by the reflecting mirror 12.
As a further improvement, in step S4, further comprising:
s41, judging C n，m Whether or not is greater than the first threshold D, when C n，m C ≡D n，m ' and i is the number greater than or equal to the first threshold D.
As a further improvement, in step S4, further comprising:
s42, obtaining the ratio eta=i/n of i and n, and carrying out early warning at different levels along with the rising of eta.
It will be appreciated that the description will be given taking the tunnel cross section provided with 8 mirrors 12 as an example, i.e. n=8. When i is 1, eta is about 0.125, which indicates that a point on one side of the tunnel cross section is possibly deformed abnormally or misinformation generated by data measurement accuracy errors, and low-level early warning can be performed; when i is 4, eta is about 0.5, which indicates that deformation abnormality occurs on the whole side surface of the tunnel cross section, and medium-level early warning can be performed; when i is 8, η is about 1, which indicates that deformation abnormality may occur at the tunnel top, and thus, high-level early warning may be performed. As a further improvement, it can be further judged that C n，m And if ' is larger than the second threshold value ', when the ' is larger than the second threshold value, indicating that the deformation is larger, and carrying out high-level early warning.
As a further improvement, in step S4, further comprising:
s43, the cloud processing end 200 further performs the following steps according to C n，m ' judging the specific deformation position of the cross section of the tunnel.
Please refer to fig. 1, specifically, when i is 1, and C 4，m ' it is stated that deformation abnormality may occur at the position of the tunnel cross section marks (4, 1); when i is 2, and C 6，m ’、C 7，m ' it is stated that deformation abnormality may occur at the positions of the tunnel cross section marks (6, 1) to (7, 1); when i is 4, and C 1，m ’、C 2，m ’、C 3，m ’、C 4，m ' it is stated that deformation abnormality may occur on one entire side of the tunnel cross section; when i is 8, C 1，m ’、C 2，m ’、C 3，m ’、C 4，m ’、C 5，m ’、C 6，m ’、C 7，m ’、C 8，m ' it is stated that deformation anomalies may occur at the tunnel roof. In other words, it can be according to C n，m The specific position of n in' determines the deformation position.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. Tunnel deformation on-line monitoring system based on 532nm green laser rangefinder module, its characterized in that includes:
a plurality of tunnel data detection and transmission units (100), each tunnel data detection and transmission unit (100) comprising:
the 532nm green laser ranging module (11) is arranged at the top end, wherein the 532nm green laser ranging module can rotate around the axis of the 532nm green laser ranging module;
the control module (10) is used for controlling the 532nm green laser ranging module (11) to work and acquiring deformation information of the tunnel according to the data of the 532nm green laser ranging module (11);
a signal transmission module (13) connected with the control module (10); and
a plurality of reflectors (12) which are arranged at two sides of the cross section of the tunnel at intervals, wherein the reflectors (12) are of a hemispherical structure with a reflecting layer plated on the surface;
the cloud processing end (200) is used for carrying out early warning according to the tunnel deformation information of each tunnel data detection and transmission unit (100);
the reflectors (12) are symmetrically arranged at two sides of the 532nm green laser ranging module (11) along the central axis of the tunnel;
the detection control method of the tunnel deformation on-line monitoring system comprises the following steps:
s1, controlling the 532nm green laser ranging module (11) to rotate and sequentially scan through all the reflectors (12) on the cross section of the tunnel, and obtaining the initial distance from the 532nm green laser ranging module (11) to each reflector (12), which is defined as A n，m Wherein n is the serial number of each reflector (12), and m is the serial number of each 532nm green laser ranging module (11);
s2, controlling the 532nm green laser ranging module (11) to rotate at intervals of preset time to sequentially scan through all the reflectors (12) on the cross section of the tunnel, and obtaining the actual distance from the 532nm green laser ranging module (11) to each reflector (12), wherein the actual distance is defined as B n，m ；
S3, obtaining the absolute value of the difference value from each reflecting mirror (12) to the 532nm green laser ranging module (11), and marking as C n，m Wherein C n，m ＝|B n，m -A n，m |；
S4, the C is carried out n，m Transmitting to the cloud processing end (200);
s41, judging C n，m Whether or not is greater than the first threshold D, when C n，m C ≡D n，m ' and i is the number greater than or equal to the first threshold D;
s42, obtaining the ratio eta=i/n of i and n, and carrying out early warning at different levels along with the rising of eta.
2. The tunnel deformation on-line monitoring system based on the 532nm green laser ranging module according to claim 1, wherein the 532nm green laser ranging module (11) is configured to filter out indirectly reflected laser light and perform accurate ranging according to the laser light directly reflected by the reflecting mirror (12).
3. The online tunnel deformation monitoring system based on the 532nm green laser ranging module according to claim 1, wherein in step S4, the system comprises:
s43, the cloud processing end (200) is used for processing the cloud according to C n，m ' judging the specific deformation position of the cross section of the tunnel.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074653B (en) * | 2021-03-31 | 2022-10-14 | 中煤科工集团重庆研究院有限公司 | Tunnel section deformation monitoring device |
| CN113074652B (en) * | 2021-03-31 | 2022-10-14 | 中煤科工集团重庆研究院有限公司 | Tunnel section deformation monitoring method |
| CN113374527B (en) * | 2021-07-02 | 2023-05-23 | 福州大学 | Tunnel structure safety assessment method based on full-section deformation data |
| CN116697923B (en) * | 2023-08-07 | 2023-10-27 | 石家庄铁道大学 | Full-automatic monitoring method and device for railway tunnel deformation |
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