CN113550752A - Automatic tunnel section instrument based on galvanometer and construction method - Google Patents
Automatic tunnel section instrument based on galvanometer and construction method Download PDFInfo
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- CN113550752A CN113550752A CN202110898179.7A CN202110898179A CN113550752A CN 113550752 A CN113550752 A CN 113550752A CN 202110898179 A CN202110898179 A CN 202110898179A CN 113550752 A CN113550752 A CN 113550752A
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- light source
- tunnel
- galvanometer
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
Abstract
The invention provides an automatic tunnel section instrument based on a galvanometer, which comprises an X/Y galvanometer component, a detection light source, a display light source, a driving circuit, a light detection and distance measurement module and a signal processing and control component, wherein the detection light source and the display light source are electrically connected with the signal processing and control component; the signal processing and control assembly is electrically connected with the driving circuit, and the driving circuit is electrically connected with the X/Y galvanometer assembly and is used for driving the X/Y galvanometer assembly to reflect the light source to a preset position; the optical detection and ranging module is electrically connected with the signal processing and control assembly and is used for sending the received light source point cloud information to the signal processing and control assembly; the display light source is directed to the second input port of the light beam combiner, and the output port of the light beam combiner is directed to the X/Y galvanometer component, so that the detection light source and the display light source both provide light sources from the light beam combiner to the X/Y galvanometer component. The invention enables the profile information of the tunnel section to be unified with the auxiliary marking graph.
Description
Technical Field
The invention relates to light source measuring equipment, in particular to an automatic tunnel section instrument based on a galvanometer and a construction method.
Background
In the tunnel construction process, blast holes are drilled on the tunnel face according to design drawings, and the grid steel frame is positioned in the primary support process through manual operation. The existing problems are that the manual operation precision is not enough because the outline and the surface of the tunnel face are not regular. If the location is inaccurate, safety accidents easily occur, and the construction efficiency is lower. Chinese patent document CN105716576A describes a remote projection type light source profiler and a method thereof, which can superpose and project design data on a tunnel section on the basis of scanning the tunnel section, so that a constructor can accurately blast holes and accurately install a grid steel frame. However, in the scheme, the light source distance meter and the galvanometer system are two devices, namely, a distance is formed between the emission central point of the acquisition tunnel section and the emission central point of the projection image, so that data errors occur. The divergence angle theta of the scanning galvanometer is determined through the matching work of the X/Y scanning galvanometer and the light source distance meter, equipment cannot be placed at a position outside the central line of the tunnel, practical use limitation is increased, meanwhile, the tunnel section is defaulted to be an ideal plane in the scheme, the situation of surface unevenness is avoided, and errors caused by uneven section cannot be corrected. CN 110455260 a describes a method, an apparatus, and an electronic device for determining a tunnel cross-section contour, where the method and the apparatus determine coordinates of a central point by a light source image locator, and then transform and process contour image data corresponding to a current tunnel cross-section, and the same error problem also exists. CN 108844522A records a shield tunnel section center extraction method based on three-dimensional light source scanning, and provides a method for directly intercepting a section based on absolute coordinates and performing space circle fitting on a section point cloud under an absolute coordinate system. The method is to be matched with the technical scheme, the whole implementation is complex, and the limiting condition is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic tunnel profiler based on a galvanometer, which can overcome the problem of error between acquisition equipment and projection equipment in the prior art, improve the superposition projection precision, has small use limitation and does not need to determine the center line of the tunnel section.
The invention aims to solve another technical problem of providing a construction method of an automatic tunnel profiler based on a galvanometer, which can improve the construction efficiency and correct errors caused by the concave-convex uneven surface of the tunnel section on the premise of ensuring the construction precision.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an automatic tunnel section instrument based on a galvanometer comprises an X/Y galvanometer component, a detection light source, a display light source, a driving circuit, a light detection and distance measurement module and a signal processing and control component, wherein the detection light source and the display light source are electrically connected with the signal processing and control component;
the signal processing and control assembly is electrically connected with the driving circuit, and the driving circuit is electrically connected with the X/Y galvanometer assembly and is used for driving the X/Y galvanometer assembly to reflect the light source to a preset position;
the optical detection and ranging module is electrically connected with the signal processing and control assembly and is used for sending the received light source point cloud information to the signal processing and control assembly;
the light beam combiner is also arranged, the detection light source points to the first input port of the light beam combiner, the display light source points to the second input port of the light beam combiner, the output port of the light beam combiner points to the X/Y galvanometer component, and light rays of the detection light source and the display light source output by the output port are in coaxial positions so that the detection light source and the display light source provide light sources from the light beam combiner to the X/Y galvanometer component.
In a preferred embodiment, the beam combiner has a structure in which a pentagonal crystal is connected to a triangular crystal, and an interface is formed at a surface of the pentagonal crystal connected to the triangular crystal.
In a preferred embodiment, no detection light source is provided in the light detection and ranging module.
In a preferred scheme, the tunnel profiler is positioned at the alignment midpoint or a position deviated from the midpoint of the tunnel.
The construction method of the automatic tunnel profiler based on the galvanometer comprises the following steps:
s1, selecting a working position of the tunnel section instrument, controlling the detection light source to project to the tunnel section through the light beam combiner and the X/Y galvanometer component in sequence by the signal processing and controlling component, controlling the driving circuit to scan the X/Y galvanometer component by the signal processing and controlling component, collecting light source light spot signals by the light detection and ranging module and transmitting the light source light spot signals to the signal processing and controlling component to obtain tunnel profile information at the tunnel section;
s2, the signal processing and control component matches the tunnel contour information with the auxiliary labeling graph to obtain coordinate information needing to be projected at the tunnel section;
s3, the signal processing and control assembly controls the display light source to project to the tunnel section through the light beam combiner and the X/Y galvanometer assembly in sequence, and the signal processing and control assembly controls the driving circuit to project to the X/Y galvanometer assembly according to the coordinate information;
through the steps, the required marking information is accurately projected on the section of the tunnel.
In a preferred scheme, the tunnel profiler is positioned at the alignment midpoint or a position deviated from the midpoint of the tunnel.
In a preferred scheme, in step S1, an optimal display area is projected from the tunnel profiler, and the optimal display area completely covers the tunnel profile to be marked when the tunnel profiler is placed;
the optimum display area is an area in which distortion can be corrected.
In a preferred embodiment, the tunnel profiler is arranged on a tripod or on a vehicle.
In a preferred embodiment, in step S2, the signal processing and control module converts the obtained light spot signal of the light source into three-dimensional matrix data, performs numerical calculation on the uneven position of the tunnel cross section, obtains planarized data of the tunnel cross section through calculation, stores the data, superimposes the data of the auxiliary labeling pattern and the planarized tunnel cross section data to obtain coordinate information to be projected, takes out the projection point where the projection accuracy of the uneven cross section is affected, corrects the coordinate information of the projection by the correction data, and projects the corrected three-dimensional matrix data onto the tunnel cross section.
In a preferred scheme, the signal processing and control assembly is connected with an input device so as to carry out manual fine adjustment, correction or confirmation on the local position of the marked information.
The invention provides an automatic tunnel section instrument based on a galvanometer and a construction method, and compared with the prior art, the automatic tunnel section instrument based on the galvanometer has the following beneficial effects:
1. the tunnel section instrument of the invention completes data acquisition and graphic projection operations by using the same X/Y galvanometer component, so that the profile information of the tunnel section and the auxiliary marking graphic information are unified, namely the error between the emission center point and the emission center point of the projection image is eliminated, and the marking precision is improved.
2. The tunnel profiler saves an X/Y galvanometer component and reduces the system cost.
3. The method automatically scans the profile at the tunnel section after the tunnel section is fully covered by the optimal display area, automatically displays the profile on the section after the marking information of the auxiliary marking graph is fused with the profile information at the tunnel section, automatically performs the whole process in a system without determining the tunnel center line where the middle point of the tunnel is located again, and improves the construction efficiency.
4. The method can reduce the projection coordinate correction of the convex-concave regular plane of the tunnel section caused by construction, and further improve the construction precision.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic layout of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural diagram of the optical combiner of the present invention.
In the figure: the device comprises a tunnel profiler 1, a tunnel section 2, a tunnel midpoint 3, a tunnel profile 4, an X/Y galvanometer component 5, a light beam combiner 6, a pentagonal crystal 61, a triangular crystal 62, an interface 63, a first input port 64, a second input port 65, an output port 66, a light detection and distance measurement module 7, a driving circuit 8, a detection light source 9, a display light source 10, a signal processing and control component 11 and an auxiliary labeling graph 12.
Detailed Description
Example 1:
as shown in fig. 1-2, an automatic tunnel profiler based on a galvanometer, the tunnel profiler 1 includes an X/Y galvanometer component 5, a detection light source 9, a display light source 10, a driving circuit 8, a light detection and ranging module 7 and a signal processing and control component 11, the detection light source 9 and the display light source 10 are electrically connected with the signal processing and control component 11;
the signal processing and control assembly 11 is electrically connected with the driving circuit 8, and the driving circuit 8 is electrically connected with the X/Y galvanometer assembly 5 and is used for driving the X/Y galvanometer assembly 5 to reflect a light source to a preset position; in a preferable scheme, a plurality of reflecting mirrors with variable inclination angles are arranged on the X/Y galvanometer component (5) so as to reflect the light source to a preset position. Preferably, the light source is a laser light source.
The optical detection and ranging module 7 is electrically connected with the signal processing and control component 11 and is used for sending the received light source point cloud information to the signal processing and control component 11;
the optical beam combiner 6 is further arranged, the detection light source 9 points to a first input port 64 of the optical beam combiner 6, the display light source 10 points to a second input port of the optical beam combiner 6, an output port 66 of the optical beam combiner 6 points to the X/Y galvanometer component 5, and light rays of the detection light source 9 and the display light source 10 output by the output port 66 are in coaxial positions, so that the detection light source 9 and the display light source 10 both provide light sources for the X/Y galvanometer component 5 from the optical beam combiner 6. According to the structure, the emission and the graphic projection of light source light point data are simultaneously realized by one X/Y galvanometer component 5, so that the coordinate position error between the collected tunnel contour 4 information and the graphic projection information is eliminated, the projection precision is greatly improved, the position of the middle point 3 in the tunnel is not required, the tunnel profiler 1 is convenient to arrange, and the projection light source can be prevented from being shielded by an operator. The scheme of the invention can save a set of X/Y galvanometer component 5, a driving circuit 8 and a control component, and reduce the use cost of the equipment.
In a preferred embodiment, as shown in fig. 3, the beam combiner 6 has a structure in which a penta-rhomb crystal 61 is connected to a triangular crystal 62, and an interface 63 is formed on a surface where the penta-rhomb crystal 61 is connected to the triangular crystal 62. With this structure, the beam combination of different light sources can be realized.
In a preferred embodiment, as shown in fig. 2, the optical detection and ranging module 7 is integrated with other functional components to form an equipment system, and the optical detection and ranging module 7 is not provided with a detection light source 9. By the structure, the overall structure of the system is simplified, and the contact ratio of the detection coordinate and the projection coordinate is improved.
In a preferred scheme, the tunnel profiler 1 is positioned at the alignment midpoint 3 or at a position deviated from the tunnel midpoint 3. Preferably, the tunnel profiler 1 is located at a position offset from the tunnel midpoint 3, further improving ease of deployment. And the personnel who construct at the face are difficult for sheltering from the projection light.
Example 2:
the construction method of the automatic tunnel profiler based on the galvanometer comprises the following steps:
s1, selecting a working position of the tunnel profiler 1, controlling the detection light source 9 to project to the tunnel section 2 through the light beam combiner 6 and the X/Y galvanometer component 5 by the signal processing and control component 11, controlling the driving circuit 8 to scan the X/Y galvanometer component 5 by the signal processing and control component 11, collecting light source light spot signals by the light detection and ranging module 7, and transmitting the light spot signals to the signal processing and control component 11 to obtain tunnel profile 4 information at the tunnel section 2;
s2, the signal processing and control component 11 matches the tunnel contour information with the auxiliary labeling graph 12 to obtain the coordinate information to be projected at the tunnel section 2;
s3, the signal processing and control component 11 controls the display light source 10 to project to the tunnel section 2 through the light beam combiner 6 and the X/Y galvanometer component 5 in sequence, and the signal processing and control component 11 controls the driving circuit 8 to project to the X/Y galvanometer component 5 according to the coordinate information;
through the steps, the required marking information is accurately projected on the tunnel section 2.
In a preferred scheme, the tunnel profiler 1 is positioned at the alignment midpoint 3 or at a position deviated from the tunnel midpoint 3.
In a preferred scheme, in step S1, an optimal display area is projected from the tunnel profiler 1, and the tunnel profile 2 to be marked is completely covered with the optimal display area when placed;
the optimum display area is an area in which distortion can be corrected.
In a preferred embodiment, the tunnel profiler 1 is arranged on a tripod or on a vehicle.
In a preferred embodiment, in step S2, the signal processing and control module 11 converts the obtained light spot signal of the light source into three-dimensional matrix data, performs numerical calculation on the rugged position of the tunnel section 2, obtains planarized data of the tunnel section 2 through calculation, stores the data, superimposes the data of the auxiliary labeling pattern 12 and the planarized tunnel section data to obtain coordinate information to be projected, takes out the correction data to perform correction operation on the projected coordinate information of the rugged section, and projects the corrected three-dimensional matrix data to the tunnel section 2. In the preferred scheme, a signal processing and control component (11) converts an obtained light source light spot signal into three-dimensional matrix data, levels the rugged position of the tunnel section (2), namely the tunnel section (2) is positioned on the same plane to obtain leveled tunnel section data, stores correction data in the leveling process, wherein the correction data refers to a vector difference value between the leveled coordinate of the tunnel section (2) and the rugged position coordinate, superposes the data of an auxiliary marking graph (12) and the leveled tunnel section data to obtain coordinate information to be projected, takes out the correction data to calculate the coordinate information to be projected, namely performs vector summation operation on the vector difference value between the leveled coordinate of the tunnel section (2) and the rugged position coordinate and the coordinate information to be projected to restore the original rugged three-dimensional matrix data, then projected to the tunnel section (2).
In a preferred embodiment, the signal processing and control module 11 is connected to an input device for manually fine-tuning, correcting or confirming the local position of the labeled information.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides an automatic tunnel section appearance based on mirror shakes, tunnel section appearance (1) include that X/Y shakes mirror subassembly (5), detection light source (9), display light source (10), drive circuit (8), light detection and range finding module (7) and signal processing and control assembly (11), characterized by: the detection light source (9) and the display light source (10) are electrically connected with the signal processing and controlling component (11);
the signal processing and control assembly (11) is electrically connected with the driving circuit (8), and the driving circuit (8) is electrically connected with the X/Y galvanometer assembly (5) and is used for driving the X/Y galvanometer assembly (5) to reflect a light source to a preset position;
the optical detection and ranging module (7) is electrically connected with the signal processing and control assembly (11) and is used for sending the received light source point cloud information to the signal processing and control assembly (11);
the X/Y vibration mirror is also provided with a light beam combiner (6), the detection light source (9) points to a first input port (64) of the light beam combiner (6), the display light source (10) points to a second input port of the light beam combiner (6), an output port (66) of the light beam combiner (6) points to the X/Y vibration mirror assembly (5), and light rays of the detection light source (9) and the display light source (10) output by the output port (66) are in coaxial positions, so that the detection light source (9) and the display light source (10) provide light sources from the light beam combiner (6) to the X/Y vibration mirror assembly (5).
2. The automatic tunnel profiler based on a galvanometer according to claim 1, characterized in that: the structure of the light beam combiner (6) is that a penta-rhomb crystal (61) is connected with a triangular crystal (62), and an interface (63) is formed on the surface where the penta-rhomb crystal (61) is connected with the triangular crystal (62).
3. The automatic tunnel profiler based on a galvanometer according to claim 1, characterized in that: the light detection and distance measurement module (7) is not provided with a detection light source (9).
4. The automatic tunnel profiler based on a galvanometer according to claim 1, characterized in that: the tunnel profiler (1) is positioned at the alignment midpoint (3) or the position deviated from the tunnel midpoint (3).
5. A construction method of the automatic tunnel profiler based on the galvanometer, which is characterized by comprising the following steps:
s1, selecting a working position of the tunnel profiler (1), controlling a detection light source (9) to project to the tunnel section (2) by a signal processing and control assembly (11) through a light beam combiner (6) and an X/Y galvanometer assembly (5) in sequence, controlling a driving circuit (8) to scan the X/Y galvanometer assembly (5) by the signal processing and control assembly (11), collecting light source light spot signals by a light detection and ranging module (7) and transmitting the light spot signals to the signal processing and control assembly (11), and obtaining tunnel profile (4) information at the tunnel section (2);
s2, the signal processing and control component (11) matches the tunnel contour information with the auxiliary marking graph (12) to obtain coordinate information needing to be projected at the tunnel section (2);
s3, the signal processing and control assembly (11) controls the display light source (10) to project to the tunnel section (2) through the light beam combiner (6) and the X/Y galvanometer assembly (5) in sequence, and the signal processing and control assembly (11) controls the driving circuit (8) to project to the X/Y galvanometer assembly (5) according to the coordinate information;
through the steps, the required marking information is accurately projected on the tunnel section (2).
6. The automatic tunnel profiler based on a galvanometer according to claim 5, characterized in that: the tunnel profiler (1) is positioned at the alignment midpoint (3) or the position deviated from the tunnel midpoint (3).
7. The automatic tunnel profiler based on a galvanometer according to claim 5, characterized in that: in the step S1, projecting an optimal display area from the tunnel section plotter (1), and completely covering the tunnel section (2) to be marked with the optimal display area when the tunnel section plotter is placed;
the optimum display area is an area in which distortion can be corrected.
8. The automatic tunnel profiler based on a galvanometer according to claim 5, characterized in that: the tunnel profiler (1) is arranged on a tripod or a vehicle.
9. The automatic tunnel profiler based on a galvanometer according to claim 5, characterized in that: in step S2, the signal processing and control module (11) converts the obtained light spot signal of the light source into three-dimensional matrix data, performs numerical calculation on the uneven position of the tunnel section (2), obtains the planar data of the tunnel section (2) through calculation, stores the data, superimposes the data of the auxiliary labeling pattern (12) and the planar tunnel section data to obtain coordinate information to be projected, takes out the correction data to perform correction operation on the projected coordinate information of the uneven section, and projects the corrected three-dimensional matrix data to the tunnel section (2).
10. A galvanometer-based automatic tunnel profiler as set forth in any one of claims 5 or 9, wherein: the signal processing and control assembly (11) is connected with an input device to perform manual fine adjustment, correction or confirmation on the local position of the marked information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110898179.7A CN113550752B (en) | 2021-08-05 | 2021-08-05 | Automatic tunnel section instrument based on vibrating mirror and construction method |
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| CN202110898179.7A CN113550752B (en) | 2021-08-05 | 2021-08-05 | Automatic tunnel section instrument based on vibrating mirror and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115289981A (en) * | 2022-08-30 | 2022-11-04 | 武汉新朗光电科技有限公司 | Multipoint laser displacement monitoring device, system and method |
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