Multi-wire stay wire type displacement meter and measuring method thereof

Abstract

The invention provides a multi-wire stay wire type displacement meter and a measuring method thereof, and relates to the technical field of displacement meters, the displacement meter comprises a box body, a data transmission module and an information acquisition module, and the data transmission module and the information acquisition module are connected and arranged in the box body; the information acquisition module comprises three information acquisition units, and each information acquisition unit comprises a wire spool, an encoder, a connecting rod, a guide wheel and a flexible steel wire; the connecting rods are fixed on two opposite side surfaces of the box body; the guide wheel is arranged outside the box body; the encoder and the wire spool are fixed on the connecting rod; and the flexible steel wire is wound in the wire spool, penetrates through the encoder, penetrates out of the bottom of the box body and is connected with the wire guide wheel. By arranging the three groups of information acquisition units, displacement monitoring in three different directions or continuous deformation body displacement monitoring in the same direction can be realized, a plurality of displacement sensors do not need to be installed for multiple times, and thus the working efficiency and the measurement accuracy are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of displacement meters, and in particular to a multi-wire pulling type displacement meter and a measuring method thereof. Background Art

[0002] The statements in this section merely provide background art related to the present disclosure and do not necessarily constitute prior art.

[0003] The wire displacement meter is a unit of length measurement with the advantages of large range, dynamic measurement, and reliable facilities. It is widely used in various occasions where measurement is required, including linear guides, textile machinery, construction machinery, slope monitoring, rock collapse warning, bridge support displacement monitoring, etc.

[0004] In the prior art, Patent No.: ZL202221399218.5 discloses a new type of pull-wire displacement sensor, in which a guide device for changing the angle of the pull-wire outlet is provided at the upper end of the pull-wire box, which has the technical effect of realizing multi-angle measurement on multiple vertical planes and facilitating the adjustment of the angle and the height. However, the pull-wire displacement sensor adopts a single-wire structure, consisting of a steel wire and a measurement system for measuring the tensile length of the steel wire. In scenarios such as multi-directional displacement monitoring of bridge supports, dynamic monitoring of slope and rock collapse warnings, it is necessary to install multiple such pull-wire displacement sensors in multiple directions in succession. The use process is cumbersome and it is extremely inconvenient to install on some dangerous rock masses, and it is not very practical. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a multi-wire pull-wire displacement meter and a measurement method thereof, aiming to solve the problems of single application scenario, low working efficiency, inconvenient construction and installation of pull-wire displacement meters in the prior art.

[0006] The first aspect of the present invention provides a multi-wire pull-wire displacement meter, the displacement meter includes a box, a data transmission module and an information acquisition module, the data transmission module is connected to the information acquisition module and is arranged in the box;

[0007] The information collection module includes three groups of information collection units, each group of information collection units includes: a winding disk, an encoder, a connecting rod, a guide wheel and a flexible steel wire;

[0008] The connecting rod is fixed on two opposite sides of the box; the guide wheel is arranged outside the box; the encoder and the winding drum are fixed on the connecting rod; the flexible steel wire is wound in the winding drum, one end of the flexible steel wire passes through the encoder, passes out from the bottom of the box, and is fixed to the object to be measured after being guided by the wire wheel.

[0009] Furthermore, the data acquisition module also includes a motor, which is connected to the winding drum and is used to drive the winding drum to move.

[0010] Furthermore, the data transmission module includes a data transmission terminal, which is used to receive the displacement data collected by each group of information collection units and transmit it to an external terminal.

[0011] Furthermore, the data transmission module also includes a battery and a weak-current box; the data transmission terminal is fixed in the weak-current box, the battery is connected to the weak-current box, and the battery supplies power to the weak-current box.

[0012] Furthermore, a solar energy control module is also provided in the weak current box, and the solar energy control module is connected to the data transmission terminal.

[0013] Furthermore, the guide wheel is a 360° steering wheel, and the 360° guide wheel enables the winding wire to rotate in the X and Y directions.

[0014] Furthermore, it also includes a fixture, one end of the flexible steel wire is connected to the fixture after being guided by the guide wheel, and is fixed to the object to be measured through the fixture.

[0015] Furthermore, bolt holes are arranged around the box body, and the box body is fixed through the bolt holes.

[0016] Furthermore, three small holes are sequentially opened at the bottom of the box, and the three small holes are used for the flexible steel wires of the three groups of information collection units to pass through.

[0017] A second aspect of the present invention provides a measurement method based on a multi-wire pull-wire displacement meter, comprising:

[0018] Step 1: Fix the wire displacement meter at a stable position at the monitoring point, and ensure that the bottom of the displacement meter box faces any one or more displacement directions to be monitored;

[0019] Step 2: Set a fixture on the surface of the object to be tested;

[0020] Step 3: Wind the flexible steel wire into the winding drum. One end of the flexible steel wire passes through the encoder and comes out from the bottom of the box. It is fixed on the fixture after being guided by the wire wheel.

[0021] Step 4: The object to be measured undergoes a change in any one or more displacement directions. The displacement of the object to be measured drives the displacement of the fixture. The displacement of the fixture drives the flexible steel wire to stretch or contract, driving the winding disk to rotate. The encoder collects the stretching or contraction data of the flexible steel wire in real time.

[0022] Step 5: The data transmission terminal transmits the stretching or contraction data of the flexible steel wire to an external terminal or a remote monitoring center;

[0023] Step 6: Obtain the stretching or contraction data of the flexible steel wire through an external terminal or a remote monitoring center, obtain the deformation in each displacement direction, and determine whether to issue an early warning message based on the deformation in each displacement direction.

[0024] Compared with the prior art, the multi-wire pull-wire displacement meter and the measurement method thereof provided by the present invention have the following beneficial effects:

[0025] (1) By setting up three groups of information acquisition units, the flexible steel wire of each group of information acquisition units passes vertically through a small hole to realize Z-axis displacement monitoring. It can simultaneously monitor the displacement changes of the continuous deformation body in the same direction without the need to install multiple displacement sensors multiple times, thereby greatly improving work efficiency and measurement accuracy.

[0026] (2) Each information collection unit is provided with a 360° steering wheel. The 360° steering wheels of any two of the three information collection units can realize the fixed setting of the flexible steel wire in the mutually perpendicular X and Y directions in a plane, thereby realizing the displacement monitoring in the direction perpendicular to the central axis of the bridge and in the direction parallel to the central axis of the bridge. Furthermore, the flexible steel wire of the third information collection unit moves along the Z axis, which can realize the displacement change monitoring in three different directions, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0028] Figure 1 A box body of the multi-wire pull-wire displacement meter provided by the present invention;

[0029] Figure 2 A fixture for the multi-wire pull-wire displacement meter provided by the present invention;

[0030] Figure 3 This is a schematic diagram of the multi-wire pull-wire displacement meter provided by the present invention being applied in a bridge support displacement monitoring scenario, wherein: Figure 3 A in the figure shows a schematic diagram viewed from a direction perpendicular to the central axis of the bridge. Figure 3 Figure B shows a schematic diagram along the central axis of the bridge.

[0031] Figure 4 This is a schematic diagram of the multi-wire pull-wire displacement meter provided by the present invention being applied in landslide and rock collapse monitoring scenarios.

[0032] Among them, 1. Battery; 2. Weak current box; 2.1. MPPT solar control module; 2.2. DTU data transmission terminal; 3. Motor; 4. Connecting rod; 5. Winding reel; 6. Flexible steel wire; 7. Encoder; 8. 360° steering wheel; 9. Fixer; 10. Threading hole; 11. Data transmission module; 12. Information collection module; 13. Pull-wire displacement meter box; 14. Reserved bolt holes. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "up and down, front and back, left and right, inner left module, front side panel, front side panel, left front side, right front side panel, inner right, front side panel, outer front, surrounding" and the like indicate the directions or positional relationships based on the present invention. Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] See also Figure 1 and 2 The present invention provides a multi-wire pull-wire displacement meter, which comprises a box (13), a data transmission module (11) and an information collection module (12), wherein the data transmission module is connected to the information collection module and is arranged in the box; the box is sealed and fixed together by six side panels, namely, upper and lower, front and rear, left and right, to prevent rainwater from penetrating and dust from entering, thereby ensuring the normal operation of the internal data transmission module and the information collection module, and improving the stability and service life of the device.

[0038] The information acquisition module comprises three groups of information acquisition units, each of which comprises: a winding disk (5), an encoder (7), a connecting rod (4), a guide wheel (8) and a flexible steel wire (6); the three groups of information acquisition units are fixed in parallel from left to right in the displacement meter housing. The three groups of information acquisition units can realize displacement monitoring in three different directions, and can also realize displacement monitoring of a continuous deformable body in the same direction, thereby improving the reliability and efficiency of displacement monitoring. The three different directions include three mutually perpendicular directions of X, Y and Z. The X and Y directions are realized by a guide wheel (8), and the guide wheel (8) is a 360° steering wheel. The 360° guide wheel realizes the rotation of the winding steel wire in the X and Y directions. The diameter of the 360° guide wheel is 4-8 cm. In one embodiment, the diameter of the 360° guide wheel is 6 cm. The 360° steering wheel can realize the fixed arrangement of the flexible steel wire in two mutually perpendicular directions in a plane. In addition, the flexible steel wire can also move along the axial direction of the 360° steering wheel, thereby realizing displacement monitoring in the Z direction.

[0039] The connecting rod (4) is fixed on two opposite sides of the box; the guide wheel (8) is arranged outside the box; the encoder (7) and the winding drum (5) are fixed on the connecting rod (4); the flexible steel wire (6) is wound in the winding drum (5), one end of the flexible steel wire passes through the encoder (7), passes out from the bottom of the box, and is fixed to the object to be measured after being guided by the wire wheel (8).

[0040] The data acquisition module also includes a motor, which is connected to the winding drum and is used to drive the winding drum to move.

[0041] The winding reel in each information acquisition unit is used to reel in or release the flexible steel wire, and the encoder is used to record the length of the reel or release of the flexible steel wire, so as to accurately calculate the displacement. The connecting rod connects the winding reel and the encoder to ensure the relative position between them is stable, while the guide wheel guides the flexible steel wire to move along the predetermined path to ensure the accuracy of the displacement measurement.

[0042] The data transmission module (11) comprises a data transmission terminal (2.2), which is used to receive the displacement data collected by each group of information collection units and transmit it to an external terminal. The external terminal includes but is not limited to computers, mobile phones, tablet computers and other smart devices, so that users can view and analyze the displacement data anytime and anywhere.

[0043] The data transmission module (11) also includes a storage battery (1) and a weak current box (2); the data transmission terminal (2.2) is fixed in the weak current box (2), the storage battery (1) is connected to the weak current box (2), and the storage battery supplies power to the weak current box.

[0044] A solar energy control module (2.1) is also arranged in the weak current box, and the solar energy control module is connected to the data transmission terminal.

[0045] In one embodiment, the solar control module adopts MPPT (Maximum Power Point Tracking) technology, based on which the working point of the solar panel is adjusted in real time according to changes in the light intensity of the external environment, so that it always operates at the maximum power point voltage, thereby maximizing the utilization of solar energy, ensuring that the battery can be charged continuously and stably, extending the endurance of the equipment, and improving the stability and reliability of the equipment.

[0046] In one embodiment, the data transmission terminal adopts DTU (Data Transfer Unit) technology, based on which remote data transmission and real-time monitoring are realized. Through the DTU data transmission terminal, the displacement data recorded by the encoder can be transmitted to the remote monitoring center, which is convenient for the staff to conduct real-time monitoring and analysis of the displacement of monitoring objects such as bridge bearings, landslides, and rock collapses.

[0047] The apparatus also includes a fixture (9), one end of the flexible steel wire (6) is connected to the fixture (9) after being guided by the guide wheel (8), and is fixed to the object to be measured through the fixture, and the object to be measured includes but is not limited to a bridge support, a landslide and a collapsed rock mass. There are three fixtures (9) matched with the cable displacement meter box (15), which correspond to the three groups of information collection units.

[0048] The box (13) is provided with four bolt holes around it, and the box is fixed by the bolt holes. The reserved bolt holes are provided around the box, so that the user can select a suitable installation position according to the actual situation, and fix the box in a stable place without displacement by bolts. The wire hole is provided on the right side of the front side plate of the box, and three small holes are provided in sequence, and the three small holes are used for the flexible steel wires of the three groups of information collection units to pass through and lead out.

[0049] In one embodiment, three small holes are sequentially opened on the right side of the front side plate of the box body (13). The three small holes correspond to the flexible steel wires in the three groups of information collection units, and are used for the insertion and extraction of the flexible steel wires. The small holes are treated to reduce drag and resist friction. The flexible steel wire in each group of information collection units passes through the corresponding small holes into the box body, and then is guided by the guide wheel, wound around the encoder, and finally wound on the winding reel. This design ensures the stability and accuracy of the flexible steel wire during movement, and also facilitates the installation and maintenance of the flexible steel wire.

[0050] Embodiment 2

[0051] The present invention provides a measurement method based on a multi-wire pull-wire displacement meter, comprising:

[0052] Step 1: Fix the wire displacement meter at a stable position at the monitoring point, and ensure that the bottom of the displacement meter box faces any one or more displacement directions to be monitored;

[0053] Step 2: Set a fixture on the surface of the object to be tested;

[0054] Step 3: Wind the flexible steel wire into the winding drum. One end of the flexible steel wire passes through the encoder and comes out from the bottom of the box. It is fixed on the fixture after being guided by the wire wheel.

[0055] Step 4: The object to be measured undergoes a change in any one or more displacement directions. The displacement of the object to be measured drives the displacement of the fixture. The displacement of the fixture drives the flexible steel wire to stretch or contract, driving the winding disk to rotate. The encoder collects the stretching or contraction data of the flexible steel wire in real time.

[0056] Step 5: The data transmission terminal transmits the stretching or contraction data of the flexible steel wire to an external terminal or a remote monitoring center;

[0057] Step 6: Obtain the stretching or contraction data of the flexible steel wire through an external terminal or a remote monitoring center, obtain the deformation in each displacement direction, and determine whether to issue an early warning message based on the deformation in each displacement direction.

[0058] After the multi-wire pull-wire displacement meter is installed, when the monitored object moves, the flexible steel wire will stretch or contract accordingly, and this change will be accurately recorded by the encoder.

[0059] The displacement data recorded by the encoder is then transmitted to the data transmission module. In the data transmission module, the battery provides power support for the entire system, while the weak current box is responsible for receiving data from the encoder and processing and remotely transmitting the data through the internal solar control module and data transmission terminal. The solar control module uses MPPT technology to ensure that the battery can be charged efficiently and stably, thereby extending the battery life of the equipment. The data transmission terminal uses DTU technology to achieve remote transmission and real-time monitoring of data, allowing staff to obtain the displacement of the monitored object anytime and anywhere.

[0060] By setting up three groups of information collection units, the present invention can simultaneously monitor the displacement changes of the continuous deformation body in the same direction, without the need to install multiple displacement sensors multiple times, thereby greatly improving the work efficiency and measurement accuracy. At the same time, each information collection unit is provided with a 360° steering wheel. The design of the 360° steering wheel also allows the flexible steel wire to be fixed in two mutually perpendicular directions in a plane and move along the axial direction, which can realize the monitoring of displacement changes in three different directions, further improving the flexibility of displacement monitoring.

[0061] Specifically, when it is necessary to monitor displacements in multiple directions (bridge support displacement monitoring scenario), the fixture is fixed on the target to be detected in different directions, and then the flexible steel wires in different directions are fixed in sequence to achieve multi-directional displacement monitoring;

[0062] When it is necessary to monitor multiple displacements in the same direction (landslide and rock collapse monitoring scenarios), fix the fixture at multiple displacements (each crack deformation), and then fix the flexible steel wires at the multiple displacements in turn to accurately monitor the relative displacement and overall deformation of each displacement (each crack).

[0063] (I) Bridge support displacement monitoring scenario

[0064] See also Figure 3 , Figure 3 The present invention provides an installation diagram of a multi-wire pull-wire displacement meter in a bridge support displacement monitoring scenario, and the specific working principle is as follows:

[0065] Step 1: Fix the wire displacement meter axially on the bridge pier, making sure the displacement meter wire is facing the bottom of the bridge.

[0066] Step 2: Fix the 360° steerable guide wheel to the bottom of the bridge along the longitudinal axis of the bridge so that the rope can pass through it.

[0067] Step 3: Fix the fixing device to the bottom of the bridge along the longitudinal axis of the bridge so that the rope is fixed on the fixing device.

[0068] Step 4: Select a wire rope from the pull-wire displacement meter, pass it through the 360° steerable guide wheel, and fix it on the fixture. This wire rope is set to the X-axis direction to monitor the displacement of the bridge in the X direction.

[0069] Step 5. Similarly, fix the fixture to the bottom of the bridge along the Y-axis direction so that a wire rope in the pull-wire displacement meter is fixed on it. This wire rope is set in the Y-axis direction to monitor the displacement and settlement of the bridge in the Y-axis direction.

[0070] In particular, the wire ropes in the pull-wire displacement meter are used independently and do not interfere with each other. They monitor the displacement deformation in different directions and send the data to the data transmission module through the encoder. After the data transmission module receives the displacement data collected by the encoder, it further transmits it to the external terminal. After the staff obtains the displacement deformation data through the external terminal, they can directly observe the deformation in each direction and determine whether to issue an early warning message.

[0071] In particular, the present invention integrates displacement deformation monitoring in different directions into a single draw-wire displacement meter, which facilitates the installation, data communication and processing of the displacement meter, and solves the problems of cumbersome installation work, inconvenient data communication and processing when three single-wire draw-wire displacement meters are used to obtain the position of unknown points, thereby reducing measurement costs and improving monitoring efficiency.

[0072] (II) Landslide and rock collapse monitoring scenarios

[0073] See also Figure 4 , Figure 4 The present invention provides a schematic diagram of the installation of a multi-wire pull-wire displacement meter in a landslide and rock collapse monitoring scenario, and the specific working principle is as follows;

[0074] Step 1: Select a relatively stable place on the top of the landslide or rock collapse to fix the cable displacement meter box.

[0075] Step 2: The wire of the pull-wire displacement meter is directed toward the crack opening, and the flexible steel wire is directly pulled out from the small hole without being turned by the steering wheel to achieve Z-axis monitoring.

[0076] Step 3: Fix each fixture behind the crack of the dangerous rock mass so that each wire rope passes through the crack and is fixed on the fixture.

[0077] Step 4: There are three situations:

[0078] Case 1: When each crack deforms independently, the wire displacement meter only monitors the displacement of the crack at the independent deformation location.

[0079] Case 2: When the deformation of the rear part drives the deformation of the front part as well, the deformation is mainly due to the deformation of the rear part, and the relative deformation between each crack is the deformation of the rear part minus the deformation of the front part (for example ①-②, ①-③, ①-②-③).

[0080] Case 3: When the deformation of the front drives the deformation of the rear, the deformation amount is dominated by the deformation of the front, and the relative deformation between each crack is the deformation of the front minus the deformation of the rear (for example ②-①, ③-②, ③-②-①).

[0081] In particular, each preset situation is set in the data transmission terminal DTU with coding, so there is no need to manually calculate each displacement separately. In addition, each wire rope in the wire-type displacement meter is used independently and does not interfere with each other, and each monitors the displacement deformation at different positions. The displacement deformation sends data to the data transmission module through the encoder, and the data transmission module sends the signal to the remote monitoring center. The staff can directly observe the deformation in each direction after getting the displacement data and determine whether to issue an early warning message.

[0082] In particular, the above embodiment reduces the number of displacement meters used by installing three measuring points on a pull-wire displacement meter, facilitates the installation, data communication and processing of the displacement meter, thereby reducing costs and improving measurement efficiency; at the same time, since the three steel wires belong to the same displacement meter, in addition to monitoring continuous landslide bodies, the relative displacement deformation of each landslide body can also be monitored, greatly improving the use efficiency.

[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-wire pull-wire displacement meter, characterized in that: The displacement meter comprises a box, a data transmission module and an information acquisition module, wherein the data transmission module is connected to the information acquisition module and is arranged in the box; The information acquisition module includes three groups of information acquisition units, each group of information acquisition units includes: a winding disk, an encoder, a connecting rod, a guide wheel and a flexible steel wire; The connecting rod is fixed on two opposite sides of the box; the guide wheel is arranged on the outside of the box; the encoder and the winding drum are fixed on the connecting rod; the flexible steel wire is wound in the winding drum, one end of the flexible steel wire passes through the encoder, passes out from the bottom of the box, and is fixed to the object to be measured after being guided by the wire wheel.

2. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: The data acquisition module also includes a motor, which is connected to the winding drum and is used to drive the winding drum to move.

3. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: The data transmission module includes a data transmission terminal, and the data transmission terminal is used to receive the displacement data collected by each group of information collection units and transmit the data to an external terminal.

4. The multi-wire draw-wire displacement meter according to claim 3, characterized in that: The data transmission module also includes a battery and a weak current box; the data transmission terminal is fixed in the weak current box, the battery is connected to the weak current box, and the battery supplies power to the weak current box.

5. The multi-wire draw-wire displacement meter according to claim 4, characterized in that: A solar energy control module is also provided in the weak current box, and the solar energy control module is connected to the data transmission terminal.

6. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: The guide wheel is a 360° steering wheel, and the 360° guide wheel enables the winding wire to rotate in the X and Y directions.

7. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: It also includes a fixture, one end of the flexible steel wire is connected to the fixture after being guided by the guide wheel, and is fixed to the object to be tested through the fixture.

8. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: The box body is provided with bolt holes around it, and the box body is fixed through the bolt holes.

9. The multi-wire draw-wire displacement meter according to claim 1, characterized in that: The bottom of the box is provided with three small holes in sequence, and the three small holes are used for the flexible steel wires of three groups of information collection units to pass through.

10. A measurement method based on the multi-wire pull-wire displacement meter according to any one of claims 1 to 9, characterized in that: include: Step 1: Fix the wire displacement meter at a stable position at the monitoring point, and ensure that the bottom of the displacement meter box faces any one or more displacement directions to be monitored; Step 2: Set a fixture on the surface of the object to be tested; Step 3: Wind the flexible steel wire into the winding drum, pass one end of the flexible steel wire through the encoder, come out from the bottom of the box, and fix it on the fixture after being guided by the wire wheel; Step 4: The object to be measured undergoes a change in any one or more displacement directions. The displacement of the object to be measured drives the displacement of the fixture. The displacement of the fixture drives the flexible steel wire to stretch or contract, driving the winding disk to rotate. The encoder collects the stretching or contraction data of the flexible steel wire in real time. Step 5: The data transmission terminal transmits the stretching or contraction data of the flexible steel wire to an external terminal or a remote monitoring center; Step 6: Obtain the stretching or contraction data of the flexible steel wire through an external terminal or a remote monitoring center, obtain the deformation in each displacement direction, and determine whether to issue an early warning message based on the deformation in each displacement direction.

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