CN111397589A - Deformation monitoring and measuring method - Google Patents
Deformation monitoring and measuring method Download PDFInfo
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- CN111397589A CN111397589A CN202010264385.8A CN202010264385A CN111397589A CN 111397589 A CN111397589 A CN 111397589A CN 202010264385 A CN202010264385 A CN 202010264385A CN 111397589 A CN111397589 A CN 111397589A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- 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
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Abstract
The invention discloses a deformation monitoring and measuring method, which comprises the following steps of equipment installation: fixing the laser emitting device at a detection position; the controller is in communication connection with the laser emitting device; installing intelligent targets and detection mechanisms on a plurality of measured points, wherein the detection mechanisms are in communication connection with a controller; and (3) reference detection: the controller controls the laser emitting equipment to emit laser towards the intelligent target, and the detection mechanism detects the position signal of the standard light spot and transmits the position signal to the controller; deformation detection: the controller controls the laser emitting device to emit laser towards the intelligent target, the detection mechanism detects the position signal of the detection light spot and transmits the position signal to the controller, and the controller calculates the deformation of the measured point according to the position difference between the detection light spot and the standard light spot. The laser emitting equipment does not need to be moved frequently after being installed, so that the manual operation amount is reduced, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of construction detection, in particular to a deformation monitoring and measuring method.
Background
Some construction projects may be deformed due to various reasons, for example, during construction of tunnels, foundation pits, etc., a part constructed first may be deformed due to interference of subsequent construction, and in order to ensure the quality of the construction projects, the deformation of the construction projects needs to be measured.
The existing measuring equipment is a total station, during measurement, a prism is placed at a measured point, the total station is manually moved to a detection position, laser emitted by the total station is emitted to the prism, the laser is reflected by the prism after reaching the prism, the total station receives the reflected laser, coordinates of a light spot irradiated on the prism by the laser are calculated, and indexes such as size error, flatness and the like of tunnel construction can be calculated. Because a plurality of point locations of construction engineering need be detected, consequently detect the position and detect the completion back at a, need remove the total powerstation to next detection position, because the total powerstation belongs to precision instrument, the position precision need reach millimeter level and just can guarantee the precision that detects, and all need releveling after removing at every turn, this process is carried out by the workman manually, and the operation is more troublesome, and is inefficient.
Disclosure of Invention
The invention aims to solve the technical problem of providing a deformation monitoring and measuring method, which can carry out multiple detections on a plurality of detected points by placing a total station at a detection position, thereby calculating the deformation of each detected point, reducing the manual operation amount and improving the detection efficiency.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the deformation monitoring and measuring method comprises the following steps:
equipment installation: fixing a laser emitting device at a detection position; arranging a controller which is in communication connection with the laser emitting device; installing intelligent targets and detection mechanisms for detecting laser light spot positions on a plurality of measured points, wherein each detection mechanism is in communication connection with a controller;
and (3) reference detection: the controller controls the laser emitting equipment to emit laser to each intelligent target, a standard light spot is formed on each intelligent target, and the detection mechanism detects a position signal of the standard light spot and transmits the position signal to the controller;
deformation detection: the controller controls the laser emitting device to emit laser to each intelligent target, a detection light spot is formed on each intelligent target, the detection mechanism detects a position signal of the detection light spot and transmits the position signal to the controller, and the controller calculates the deformation of the measured point according to the position difference between the detection light spot and the standard light spot.
Further, the laser emission device is installed on the multi-axis rotating platform, and the emission angle of the laser emission device is adjusted through the multi-axis rotating platform, so that the same laser emission angle for performing reference detection and deformation detection on the same measured point is ensured.
Further, the detection mechanism comprises an image recognition mechanism and a communication module, the image recognition mechanism is electrically connected with the communication module, and the communication module is in communication connection with the controller.
Further, the intelligent target comprises a laser receiving surface, and the image recognition mechanism faces the laser receiving surface.
Furthermore, the intelligent target comprises a box body, the laser receiving surface is a transparent or semitransparent side surface of the box body, and the image recognition mechanism and the communication module are both located inside the box body.
Further, the laser receiving surface is a ground glass plate.
Further, the image recognition mechanism is a camera.
Further, the communication module is a wireless communication module.
Compared with the prior art, the invention has the beneficial effects that: the invention can detect a plurality of detection points after the laser emitting device is fixed at one detection position, and can calculate the deformation of each detected point by comparing the results of the reference detection and the deformation detection. The laser emitting equipment does not need to be moved frequently after being installed, so that the manual operation amount is reduced, and the detection efficiency is improved.
Drawings
FIG. 1 is a schematic top view of a laser emitting device and an intelligent target for tunnel inspection according to the present invention;
FIG. 2 is a schematic diagram of a laser emitting device irradiating an intelligent target during reference detection;
FIG. 3 is a schematic diagram of laser irradiation of an intelligent target during deformation detection;
reference numerals: 1-measured point; 2-intelligent target; 21-a laser receiving face; 22-image recognition means; 23-a communication module; 3-laser emitting equipment; 4-a controller; 5-detecting the light spot; 6-standard light spot.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The deformation monitoring and measuring method comprises the following steps:
a laser emitting device 3 is fixed at a detection position. Taking tunnel construction as an example, as shown in fig. 1, according to the tunnel construction requirement, a plurality of measured points 1 need to be selected on the inner wall of the tunnel, and the flatness of the measured points 1 is measured to determine whether the construction error of the tunnel meets the requirement. The positions of the measured points 1 are generally determined by designers, and the positions of the measured points 1 are determined when designing a tunnel construction scheme, so that the positions of the measured points 1 are known. The detection positions, namely the positions of the detection devices (laser emission devices 3), can be determined according to the positions of the measured points 1, specifically determined by constructors, so that each detection position can effectively detect a plurality of measured points 1, and the number of the detection positions is ensured to be as small as possible under the condition that all the measured points 1 can be detected.
The laser emitting device 3 can be a device capable of emitting laser, and can adopt various existing laser emitters, and the main components are a fixed laser and a galvanometer, and can also adopt a total station instrument and the like. The laser emitting device 3 is mounted on a multi-axis rotary platform, which is fixed on the ground. The multi-axis rotating platform can rotate towards multiple directions, such as horizontally or vertically, so as to drive the laser emitting equipment 3 to move, so that the laser emitting direction of the total station can be adjusted, and the multi-axis rotating platform can aim at multiple measured points 1 at different positions and emit laser to the multiple measured points 1.
A controller 4 is provided, and the controller 4 is in communication connection with the laser emitting device 3. The controller 4 may be an existing control device, such as a computer, for controlling the operation of the laser emitting device 3 and calculating the detection result.
An intelligent target 2 and a detection mechanism for detecting the position of a laser light spot are arranged on a plurality of measured points 1, and each detection mechanism is in communication connection with a controller 4. The intelligent target 2 is used for receiving laser light, and when the laser emitting device 3 emits the laser light toward the intelligent target 2, a laser light spot can be formed on the intelligent target 2. The detection mechanism is then used to detect the position of the laser spot and can transmit the detection result to the controller 4.
Specifically, the detection mechanism includes an image recognition mechanism 22 and a communication module 23, the image recognition mechanism 22 and the communication module 23 are electrically connected, and the communication module 23 is in communication connection with the controller 4. The intelligent target 2 comprises a transparent or semitransparent laser receiving surface 21, and the image recognition mechanism 22 faces the laser receiving surface 21. The laser receiving surface 21 is used for receiving laser emitted by the laser emitting device 3, the laser irradiates the laser receiving surface 21 to form a light spot, the image recognition mechanism 22 is used for measuring the position of the light spot on the laser receiving surface 21, a high-precision camera can be used, and the communication module 23 is used for transmitting the detection result to the controller 4. The communication module 23 may be a wired communication device, and is connected to the controller 4 through a cable, and for implementation convenience, the communication module 23 is a wireless communication module, and specifically may be a 4G communication module, a bluetooth module, and the like.
The laser receiving surface 21 may be a plate, and the image recognition mechanism 22 and the communication module 23 are disposed outside the plate through a bracket, etc., in order to reduce the volume of the intelligent target 2, as a preferred embodiment: the intelligent target 2 comprises a box body which can be a cuboid box body made of plastics or metal materials, the laser receiving surface 21 is a side surface of the box body and is made of transparent or semitransparent materials, and therefore it is guaranteed that the image recognition mechanism 22 can detect the detection light spot 5 formed when the laser irradiates the laser receiving surface 21. Specifically, the laser receiving surface 21 may be made of a transparent or translucent material such as a transparent plastic plate, a glass plate, or a frosted glass plate. The image recognition mechanism 22 and the communication module 23 are both located inside the box body, the image recognition mechanism 22 and the communication module 23 are protected, and damage to the image recognition mechanism 22 and the communication module 23 caused by external dust, moisture and the like is avoided.
And (3) reference detection: as shown in fig. 2, the controller 4 controls the laser emitting device 3 to emit laser light toward each of the intelligent targets 2, forms a standard light spot 6 on the intelligent target 2, and the detection mechanism detects a position signal of the standard light spot 6 and transmits the position signal to the controller 4.
In the process, after the group intelligent target 2 and the detection mechanism at one measured point 1 are installed, the measured point 1 can be subjected to benchmark detection immediately, or after the group intelligent targets 2 and the detection mechanisms at a plurality of measured points 1 are installed, the measured points 1 can be subjected to benchmark detection one by one.
Deformation detection can be performed at intervals after the reference detection, so that the deformation condition of the measured point 1 can be known, specifically, as shown in fig. 3, the controller 4 controls the laser emitting device 3 to emit laser to each intelligent target 2, a detection light spot 5 is formed on each intelligent target 2, the detection mechanism detects a position signal of the detection light spot 5 and transmits the position signal to the controller 4, the controller 4 compares the position difference between the detection light spot 5 and the standard light spot 6, and the deformation amount of the measured point 1 can be calculated according to the position change of the detection light spot 5. The deformation rule of the measured point 1 can be obtained according to the result of each datum detection, so that the construction process can be determined more safely.
Because the laser emission device 3 is installed on the multi-axis rotating platform, the emission angle of the laser emission device 3 can be adjusted through the multi-axis rotating platform, the same laser emission angle for performing reference detection and deformation detection on the same measured point 1 is ensured, and thus the measurement error is reduced.
According to the invention, after the laser emitting device 3 is fixed at a detection position, the laser emitting device 3 does not need to be moved, so that the amount of manual labor is reduced. And the laser emission equipment 3 can detect the deformation conditions of the multiple measured points 1 at intervals, so that constructors can better know the deformation rule of the measured points 1, and the method is favorable for making a countermeasure in time and ensures the construction safety.
Claims (8)
1. The deformation monitoring and measuring method is characterized by comprising the following steps of:
equipment installation: fixing a laser emitting device (3) at a detection position; arranging a controller (4), wherein the controller (4) is in communication connection with the laser emitting equipment (3); installing intelligent targets (2) and detection mechanisms for detecting laser spot positions on a plurality of measured points (1), wherein each detection mechanism is in communication connection with a controller (4);
and (3) reference detection: the controller (4) controls the laser emitting device (3) to emit laser to each intelligent target (2), a standard light spot (6) is formed on each intelligent target (2), and the detection mechanism detects a position signal of the standard light spot (6) and transmits the position signal to the controller (4);
deformation detection: the controller (4) controls the laser emitting device (3) to emit laser to each intelligent target (2), a detection light spot (5) is formed on each intelligent target (2), the detection mechanism detects a position signal of the detection light spot (5) and transmits the position signal to the controller (4), and the controller (4) calculates the deformation amount of the measured point (1) according to the position difference between the detection light spot (5) and the standard light spot (6).
2. The deformation monitoring and measuring method according to claim 1, characterized in that the laser emitting device (3) is mounted on a multi-axis rotating platform, and the emitting angle of the laser emitting device (3) is adjusted by the multi-axis rotating platform to ensure that the emitting angles of the laser emitting device are the same for the benchmark detection and the deformation detection of the same measured point (1).
3. The deformation monitoring and measuring method according to claim 1, wherein the detecting mechanism comprises an image recognition mechanism (22) and a communication module (23), the image recognition mechanism (22) and the communication module (23) are electrically connected, and the communication module (23) is in communication connection with the controller (4).
4. The deformation monitoring measuring method according to claim 3, wherein the intelligent target (2) comprises a laser receiving surface (21), and the image recognition mechanism (22) faces the laser receiving surface (21).
5. The deformation monitoring and measuring method according to claim 4, wherein the intelligent target (2) comprises a box body, the laser receiving surface (21) is a transparent or semitransparent side surface of the box body, and the image recognition mechanism (22) and the communication module (23) are both positioned inside the box body.
6. The deformation monitoring and measuring method according to claim 5, characterized in that the laser receiving surface (21) is a ground glass plate.
7. The deformation monitoring measuring method according to claim 4, wherein the image recognition means (22) is a camera.
8. The deformation monitoring and measuring method according to claim 3, characterized in that the communication module (23) is a wireless communication module.
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| CN202010264385.8A CN111397589A (en) | 2020-04-07 | 2020-04-07 | Deformation monitoring and measuring method |
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| CN202010264385.8A CN111397589A (en) | 2020-04-07 | 2020-04-07 | Deformation monitoring and measuring method |
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Cited By (5)
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| CN113390346A (en) * | 2021-05-20 | 2021-09-14 | 爱司凯科技股份有限公司 | Track geometric parameter measuring instrument using double-galvanometer laser scanning module |
| CN113446943A (en) * | 2021-05-27 | 2021-09-28 | 上海工程技术大学 | Rock-soil body inner space displacement monitoring device and system based on image recognition |
| CN113653107A (en) * | 2021-08-05 | 2021-11-16 | 中国建筑第八工程局有限公司 | Foundation pit monitoring method and system based on 5G + informatization |
| CN114623776A (en) * | 2022-05-16 | 2022-06-14 | 四川省公路规划勘察设计研究院有限公司 | Tunnel damage prediction method based on tunnel deformation monitoring |
| WO2022142065A1 (en) * | 2020-12-30 | 2022-07-07 | 张东昱 | Synchronous monitoring system for multi-point displacement and rotation response of large-scale structure and data analysis method therefor |
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