CN115876095A - Bridge displacement monitoring method, system, equipment and storage medium - Google Patents
Bridge displacement monitoring method, system, equipment and storage medium Download PDFInfo
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Abstract
The invention provides a bridge displacement monitoring method, a system, equipment and a storage medium, wherein the method comprises the following steps: at a first moment, laser emitting elements of a plurality of monitoring points are aligned to the PSD position sensor and emit laser signals, and the position information of the holder and a first coordinate of the PSD position sensor are recorded; aligning the PSD position sensor by laser emitting elements of a plurality of monitoring points at a second moment and emitting laser signals, adjusting the position of the holder according to the holder position information, and recording a second coordinate of the PSD position sensor; and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate. The bridge displacement monitoring system can dynamically monitor the bridge displacement in real time, find the bridge displacement risk in time and give an alarm, thereby improving the bridge monitoring precision and reducing the monitoring cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a bridge displacement monitoring method, a bridge displacement monitoring system, bridge displacement monitoring equipment and a storage medium.
Background
In the construction process of the large-span bridge, a large amount of cables are used for bearing to increase the span, the cables are loaded on a bridge tower, the stress of the whole bridge is transmitted to the bridge tower through the cables and then transmitted to an underground foundation by the bridge tower, the position of the bridge tower is influenced by factors such as the temperature of the external environment, the wind power and the like, the bridge tower slightly deviates at every moment, if the position of the bridge tower greatly deviates, the side turning and the collapse of a bridge body are probably caused, and therefore the displacement of the bridge tower is an important parameter for measuring the displacement deviation of the bridge. At present, the traditional bridge displacement measurement method is characterized in that manual monitoring is used, or a camera is used to stare at a displacement monitoring point, so that the time and labor are wasted, and the precision is not high.
For example, chinese patent publication No. CN112762841a discloses a bridge dynamic displacement monitoring system based on multi-resolution depth features, which includes a plurality of monitoring extensions, a plurality of monitoring hosts, and a main server, where each monitoring extension transmits a collected bridge surface displacement video to a corresponding monitoring host through a data line, each monitoring host processes the collected bridge surface displacement video to obtain actual displacement data of the bridge surface, each monitoring host is connected with the main server through a network, and the main server analyzes and manages the obtained actual displacement data of the bridge surface. Although the method can realize the monitoring of the bridge displacement, the method needs to acquire the displacement video of the bridge for a long time and process the video data by means of edge calculation, and the method has complex algorithm and high cost.
For another example, chinese patent publication No. CN103808292a discloses a continuous measurement method for vertical relative displacement of a large-span bridge structure, which obtains a difference Δ H1 between differences of two fixed observation points by continuous two measurements; calculating a difference value h1 between the monitoring point to be detected of the bridge and the two fixed observation points; when the vertical displacement change of the monitoring point to be measured of the bridge is monitored, measuring to obtain a difference value between the height difference values of the two fixed observation points at the moment, and obtaining a difference value delta H2 between the height difference values obtained by measuring the two fixed observation points for the first time; and measuring the elevation of the monitoring point to be measured of the bridge at the moment, calculating the difference h2 between the monitoring point to be measured of the bridge and the fixed observation point at the moment, and obtaining the vertical relative displacement of the bridge structure according to the difference between h1 and h 2. According to the method, multiple times of measurement are needed at a fixed observation point manually, and only the vertical relative displacement of the bridge structure can be monitored, so that the bridge displacement cannot be dynamically and accurately monitored.
Disclosure of Invention
The invention mainly aims to provide a bridge displacement monitoring method, a system, equipment and a storage medium, and aims to dynamically monitor bridge displacement in real time, find bridge displacement risks in time and give an alarm, improve bridge monitoring precision and reduce monitoring cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bridge displacement monitoring method comprises the following steps:
laser emission elements are arranged at a plurality of monitoring points of a bridge, and a displacement monitoring device is arranged at a fixed point far away from the bridge, wherein the displacement monitoring device comprises a PSD position sensor, a holder capable of driving the PSD position sensor to rotate and a network communication module;
at a first moment, laser emitting elements of a plurality of monitoring points aim at the PSD position sensor and emit laser signals, and the position information of the holder and a first coordinate of the PSD position sensor are recorded;
aligning the PSD position sensor through laser emitting elements of a plurality of monitoring points at a second moment and emitting laser signals, adjusting the position of the holder according to the holder position information, and recording a second coordinate of the PSD position sensor;
and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate.
Further, in the above bridge displacement monitoring method, the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate specifically includes:
Further, in the above bridge displacement monitoring method, the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate further includes:
acquiring the distance between the first coordinate of each monitoring point and the center coordinate of the bridge, and taking the reciprocal of the numerical value of the distance as the weight of the displacement of the corresponding monitoring point;
normalizing the weight of the displacement of the monitoring point;
calculating according to the first coordinate and the second coordinate of each monitoring point to obtain the displacement of each monitoring point;
and calculating the displacement of each monitoring point according to the weight of the displacement of the corresponding monitoring point to obtain the integral displacement of the bridge.
Further, in the above-mentioned bridge displacement monitoring method, the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate further includes:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
Further, in the above bridge displacement monitoring method, the cradle head position information includes a horizontal rotation angle and a vertical rotation angle of the cradle head.
Further, in the bridge displacement monitoring method, the client is a computer, a tablet or a mobile phone.
In addition, the invention also provides a bridge displacement monitoring system, which comprises:
displacement monitoring unit, install in keeping away from the fixed point of bridge, it includes:
the PSD position sensor is used for acquiring displacement information of a plurality of monitoring points of the bridge;
the holder is used for driving the PSD position sensor to rotate; and
the network communication module is used for uploading the monitoring data of the PSD position sensor to a remote server;
the laser emission unit is arranged at a plurality of monitoring points of the bridge and is used for aligning the PSD position sensor at a first moment and a second moment and emitting laser signals;
the calculation and judgment unit is used for recording the holder position information and the first coordinate of the PSD position sensor at a first moment, adjusting the holder position according to the holder position information at a second moment and recording the second coordinate of the PSD position sensor; and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate.
Further, in the above bridge displacement monitoring system, the calculation and judgment unit is further configured to:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
In addition, the invention also provides bridge displacement monitoring equipment, which comprises: the bridge displacement monitoring system comprises a memory, a processor and a bridge displacement monitoring program which is stored on the memory and can run on the processor, wherein the bridge displacement monitoring program is configured to realize the steps of the bridge displacement monitoring method.
In addition, the invention also provides a storage medium, wherein the storage medium is stored with a bridge displacement monitoring program, and the bridge displacement monitoring program realizes the steps of the bridge displacement monitoring method when being executed by a processor.
The bridge displacement monitoring method, the system, the equipment and the storage medium can dynamically monitor the bridge displacement in real time, find the bridge displacement risk in time and give an alarm, improve the bridge monitoring precision and reduce the monitoring cost.
Drawings
Fig. 1 is a schematic structural diagram of a bridge displacement monitoring device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an embodiment of a bridge displacement monitoring method according to the present invention;
FIG. 3 is a schematic view of a bridge and a displacement monitoring device according to the present invention;
FIG. 4 is a schematic diagram of a PSD position sensor according to the present invention;
fig. 5 is a schematic structural diagram of an embodiment of a bridge displacement monitoring system according to the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a bridge displacement monitoring device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the bridge displacement monitoring apparatus may include: a processor 1001 such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be appreciated by those skilled in the art that the structure shown in figure 1 does not constitute a limitation of the bridge displacement monitoring apparatus and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a bridge displacement monitoring program.
In the bridge displacement monitoring device shown in fig. 1, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the bridge displacement monitoring device of the present invention may be disposed in the bridge displacement monitoring device, and the bridge displacement monitoring device calls the bridge displacement monitoring program stored in the memory 1005 through the processor 1001 and executes the bridge displacement monitoring method provided by the embodiment of the present invention.
An embodiment of the present invention provides a bridge displacement monitoring method, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of bridge displacement monitoring according to the present invention.
In this embodiment, the bridge displacement monitoring method includes:
step S1: laser emission elements are arranged at a plurality of monitoring points of a bridge, and a displacement monitoring device is arranged at a fixed point far away from the bridge, wherein the displacement monitoring device comprises a PSD position sensor, a holder capable of driving the PSD position sensor to rotate and a network communication module;
in a specific implementation, as shown in fig. 3, in order to facilitate the monitoring method of the present invention, first, laser emitting elements I, II, and iii.. Are arranged at a plurality of monitoring points on a bridge 10 according to actual requirements, wherein the laser emitting elements are laser diodes, are used for emitting laser, and are matched with a displacement monitoring device 20 to perform displacement monitoring; the displacement monitoring device 20 is installed at a fixed point far away from the bridge 10, and the fixed point can be selected at will according to requirements, but it is required to ensure that the displacement monitoring device 20 can monitor all monitoring points, that is, the laser signals emitted by the laser emitting elements I, II, iii. In this embodiment, the PSD position sensor 201 is a two-dimensional PSD position sensor, which can measure the lateral and longitudinal displacement of the laser emitting element at the monitoring point on the bridge 100. One end of the cradle head 202 is fixed to a fixed point, and the other end is connected to the PSD position sensor 201, the cradle head 202 can drive the PSD position sensor 201 to rotate to a fixed position, so that the PSD position sensor 201 can be conveniently monitored, and the network communication module (not shown) is connected to the PSD position sensor 201 and can upload monitoring data of the PSD position sensor 201 to a remote server.
Step S2: at a first moment, laser emitting elements of a plurality of monitoring points are aligned to the PSD position sensor and emit laser signals, and the position information of the holder and a first coordinate of the PSD position sensor are recorded;
during specific implementation, during initial installation, all the laser adjustment directions of all the monitoring points are aligned with the displacement monitoring devices, and after each monitoring point alignment device, the position information of the pan-tilt and the photoelectric position (coordinate information) of the PSD when each monitoring point at a first moment (initial moment) is aligned with the displacement monitoring device are recorded; and recording the position of the holder and the photoelectric position of the PSD when each monitoring point is aligned with the device, and recording the position of the holder so as to monitor the same monitoring point at the same position of the holder next time, so that the data accuracy is ensured, wherein the position information of the holder comprises the horizontal rotation angle and the vertical rotation angle of the holder.
As shown in fig. 4, the principle of PSD photoelectric position calculation is as follows: in this embodiment, the PSD position sensor is a two-dimensional PSD photoelectric device, and the two-dimensional PSD photoelectric device can directly detect and obtain coordinate information of a monitoring point. Setting the geometric central position of the two-dimensional PSD as an origin, the coordinates of a light spot central point P as (X, Y), the distance between the two electrodes and the origin as L, the abscissa of the output signal (photocurrent) of the two electrodes as X1 and X2, and the ordinate of the output signal (photocurrent) of the two electrodes as Y1 and Y2, then the two electrodes have
And step S3: aligning the PSD position sensor by laser emitting elements of a plurality of monitoring points at a second moment and emitting laser signals, adjusting the position of the holder according to the holder position information, and recording a second coordinate of the PSD position sensor;
in a specific implementation, when a second moment (which may be continuously monitored in real time or monitored at regular time) is obtained after a fixed time interval from the first moment (the bridge monitoring method of the present invention), the laser emitting elements of the plurality of monitoring points are aligned with the PSD position sensor and emit laser signals, and the position of the cradle head 202 is adjusted according to the cradle head position information (the cradle head position information recorded at the first moment), so that the cradle head 202 rotates back to the cradle head position corresponding to each monitoring point, and the second coordinate of the PSD position sensor 201 is recorded.
And step S4: calculating the displacement of the monitoring point according to the first coordinate and the second coordinate;
in concrete implementation, the displacement of each monitoring point is assumed
The coordinate point of the first coordinate and the second coordinate of each monitoring point->
And &>
And then calculating the Euclidean distance according to the coordinates of the two points to obtain the displacement of each monitoring point: />
It should be noted that, after the coordinate information of a plurality of monitoring points is acquired, the overall displacement of the bridge can be calculated according to the layout positions of the bridge monitoring points, so that the overall accuracy of bridge displacement monitoring is improved. Namely, the step S4 further includes:
acquiring the distance between the first coordinate of each monitoring point and the center coordinate of the bridge, and taking the reciprocal of the numerical value of the distance as the weight of the displacement of the corresponding monitoring point;
normalizing the weight of the displacement of the monitoring point;
calculating according to the first coordinate and the second coordinate of each monitoring point to obtain the displacement of each monitoring point;
and calculating the displacement of each monitoring point according to the weight of the displacement of the corresponding monitoring point to obtain the integral displacement of the bridge.
In addition, after the step S4, the method further includes:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
And when the displacement is judged to be larger than a preset threshold value, sending the alarm information of the bridge monitoring to a client.
It should be noted that, in this embodiment, the client includes a computer, a tablet, a mobile phone, and the like.
In addition, referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of the bridge displacement monitoring system of the present invention. The monitoring system of the invention comprises:
the PSD position sensor 101 is used for acquiring displacement information of a plurality of monitoring points of the bridge;
the holder 102 is used for driving the PSD position sensor to rotate; and
a network communication module 103, configured to upload monitoring data of the PSD location sensor 101 to a remote server;
the laser emitting unit 200 is installed at a plurality of monitoring points of the bridge, and is used for aligning the PSD position sensor 101 at a first moment and a second moment and emitting laser signals;
a calculating and judging unit 300, configured to record the cradle head position information and a first coordinate of the PSD position sensor 101 at a first time, adjust the position of the cradle head 102 according to the position information of the cradle head 102 at a second time, and record a second coordinate of the PSD position sensor 101; and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate.
The calculation judgment unit 300 is further configured to:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
The specific implementation of the bridge displacement monitoring system of the present invention is substantially the same as the embodiments of the bridge displacement monitoring method, and is not described herein again.
In addition, the present invention further provides a bridge displacement monitoring device, which includes a memory, a processor, and a bridge displacement monitoring program stored in the memory and operable on the processor, wherein: when the bridge displacement monitoring program is executed by the processor, the bridge displacement monitoring method of each embodiment of the invention is realized.
In addition, the invention also provides a computer readable storage medium, on which the bridge displacement monitoring program is stored. The computer-readable storage medium may be a Memory in the terminal in fig. 1, and may also be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, where the computer-readable storage medium includes several instructions for causing a bridge displacement monitoring device with a processor to execute the bridge displacement monitoring method according to the embodiments of the present invention.
Compared with the prior art, the bridge displacement monitoring method, the system, the equipment and the storage medium can dynamically monitor the bridge displacement in real time, find the bridge displacement risk in time and give an alarm, improve the bridge monitoring precision and reduce the monitoring cost.
The description and applications of the invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
Claims (10)
1. A bridge displacement monitoring method is characterized by comprising the following steps:
laser emission elements are arranged at a plurality of monitoring points of a bridge, and a displacement monitoring device is arranged at a fixed point far away from the bridge, wherein the displacement monitoring device comprises a PSD position sensor, a holder capable of driving the PSD position sensor to rotate and a network communication module;
at a first moment, laser emitting elements of a plurality of monitoring points aim at the PSD position sensor and emit laser signals, and the position information of the holder and a first coordinate of the PSD position sensor are recorded;
aligning the PSD position sensor by laser emitting elements of a plurality of monitoring points at a second moment and emitting laser signals, adjusting the position of the holder according to the holder position information, and recording a second coordinate of the PSD position sensor;
and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate.
2. The bridge displacement monitoring method according to claim 1, wherein the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate specifically comprises:
3. The bridge displacement monitoring method according to claim 2, wherein the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate further comprises:
acquiring the distance between the first coordinate of each monitoring point and the center coordinate of the bridge, and taking the reciprocal of the numerical value of the distance as the weight of the displacement of the corresponding monitoring point;
carrying out normalization processing on the weight of the displacement of the monitoring point;
calculating according to the first coordinate and the second coordinate of each monitoring point to obtain the displacement of each monitoring point;
and calculating the displacement of each monitoring point according to the weight of the displacement of the corresponding monitoring point to obtain the integral displacement of the bridge.
4. The bridge displacement monitoring method according to claim 1, wherein the step of calculating the displacement of the monitoring point according to the first coordinate and the second coordinate further comprises the following steps:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
5. The bridge displacement monitoring method of claim 1, wherein the cradle head position information includes a cradle head horizontal rotation angle and a cradle head vertical rotation angle.
6. The bridge displacement monitoring method according to any one of claims 1 to 5, wherein the client is a computer, a tablet or a mobile phone.
7. A bridge displacement monitoring system, the system comprising:
displacement monitoring unit, install in keeping away from the fixed point of bridge, it includes:
the PSD position sensor is used for acquiring displacement information of a plurality of monitoring points of the bridge;
the holder is used for driving the PSD position sensor to rotate; and
the network communication module is used for uploading the monitoring data of the PSD position sensor to a remote server;
the laser emission unit is arranged at a plurality of monitoring points of the bridge and is used for aligning the PSD position sensor at a first moment and a second moment and emitting laser signals;
the calculation and judgment unit is used for recording the holder position information and the first coordinate of the PSD position sensor at a first moment, adjusting the holder position according to the holder position information at a second moment and recording the second coordinate of the PSD position sensor; and calculating the displacement of the monitoring point according to the first coordinate and the second coordinate.
8. The bridge displacement monitoring system of claim 7, wherein the calculation and determination unit is further configured to:
and judging whether the displacement of the monitoring point is greater than a preset threshold value, and sending alarm information to a client through a network communication module under the condition that the displacement is greater than the preset threshold value.
9. A bridge displacement monitoring device, the device comprising: a memory, a processor, and a bridge displacement monitoring program stored on the memory and executable on the processor, the bridge displacement monitoring program configured to implement the steps of the bridge displacement monitoring method of any of claims 1 to 6.
10. A storage medium having stored thereon a bridge displacement monitoring program, which when executed by a processor, implements the steps of the bridge displacement monitoring method according to any one of claims 1 to 6.
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| CN202310188258.8A CN115876095A (en) | 2023-03-02 | 2023-03-02 | Bridge displacement monitoring method, system, equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1651855A (en) * | 2005-02-06 | 2005-08-10 | 重庆大学 | 2-D, large range laser deflection / displacement measuring method and apparatus |
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Application publication date: 20230331 |