Foundation pit support pile displacement monitoring and early warning system based on laser technology

Abstract

The invention discloses a foundation pit support pile displacement monitoring and early warning system based on a laser technology, and the system comprises at least one collection module which is used for cooperating with a target disposed on a foundation pit support pile to collect the position data Xi of the foundation pit support pile, and is provided with a marking module; and the management and control terminal is wirelessly connected with the acquisition module, and is used for receiving, processing and analyzing the position data Xi of the foundation pit supporting piles, obtaining a result about whether the foundation pit supporting piles are displaced or not, giving out early warning when the result is that the foundation pit supporting piles are displaced, and driving the marking module to mark the displaced foundation pit supporting piles at the same time. The position data of the foundation pit supporting piles are collected through the collection module and processed and analyzed through the management and control terminal, when the result is that the foundation pit supporting piles are displaced, early warning is given out, meanwhile, the marking module marks the displaced foundation pit supporting piles, the follow-up analysis and processing work difficulty is reduced, and the working efficiency is improved. Related personnel can conveniently and accurately position the specific displacement position and take necessary measures.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit support pile monitoring, and in particular to a foundation pit support pile displacement monitoring and early warning system based on laser technology. Background Art

[0002] The foundation pit support piles are temporary support, reinforcement, protection and groundwater control measures for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. Since the support piles are subject to the pressure of the side wall soil, they will be displaced during the support process. Excessive displacement of the support piles may cause soil collapse, which has very serious consequences. Therefore, it is necessary to monitor and warn the displacement of the foundation pit support piles. At present, laser detectors are usually used in conjunction with targets installed on the outer wall of the foundation pit support piles to detect whether the foundation pit support piles are displaced, and an early warning is issued when the displacement of the foundation pit support piles is detected. However, this method has the following defects:

[0003] 1. It is impossible to mark the position of the foundation pit support piles where the displacement is detected, which makes subsequent analysis and processing difficult and it is difficult to quickly and accurately locate the specific position where the displacement occurs;

[0004] 2. Since foundation pit support piles are usually in a complex construction environment, the target is easily contaminated by external factors such as dust and soil. These pollutants will cover the surface of the target, affecting the reflection effect of the laser beam, thereby reducing the accuracy and reliability of displacement monitoring.

[0005] To this end, we propose a foundation pit support pile displacement monitoring and early warning system based on laser technology. Summary of the invention

[0006] The purpose of the present invention is to provide a foundation pit support pile displacement monitoring and early warning system based on laser technology to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The foundation pit support pile displacement monitoring and early warning system based on laser technology includes:

[0009] At least one acquisition module, used to cooperate with the target arranged on the foundation pit supporting pile to collect the foundation pit supporting pile position data Xi, and the acquisition module is provided with a marking module;

[0010] The control terminal is wirelessly connected to the acquisition module, and is used to receive, process and analyze the position data Xi of the foundation pit support piles, obtain the result of whether the foundation pit support piles are displaced, and issue an early warning when the result is that the foundation pit support piles are displaced, and at the same time drive the marking module to mark the displaced foundation pit support piles.

[0011] A further improvement is that the control terminal includes:

[0012] A data receiving module is used to receive the collected foundation pit support pile position data Xi;

[0013] The data analysis module is used to compare the collected foundation pit support pile position data Xi with the corresponding foundation pit support pile position data X stored in the database to obtain the result of whether the foundation pit support pile is displaced;

[0014] The early warning module is used to issue an alarm message when the result is displacement of foundation pit support piles.

[0015] A further improvement is that the data analysis module is also used to replace the corresponding foundation pit support pile position data X in the database with the collected foundation pit support pile position data Xi after comparison.

[0016] A further improvement is that the acquisition module includes:

[0017] Slide rails;

[0018] A sliding member, movably disposed on the slide rail;

[0019] A carrier frame is arranged on the sliding member;

[0020] The laser detector is mounted on the support frame through a bracket and is used to cooperate with the target to collect the position data Xi of the foundation pit support piles;

[0021] The electrical mechanism is arranged on the bracket and is used for electrically connecting the laser detector and the control terminal.

[0022] A further improvement is that the marking module includes:

[0023] The outer shell is mounted on the lower part of one side of the support frame through an installation frame, and a top cover is detachably provided on the top;

[0024] A rotating disk is rotatably disposed in the housing, and a plurality of groups of fluorescent marking elements are inserted in a circular array on the rotating disk;

[0025] An outlet is provided at the bottom of the housing and directly corresponds to one of the fluorescent marking elements, and a plurality of rubber sheets are provided on the inner wall of the outlet in a circular array;

[0026] A pressing plate is movably arranged in the through opening on the top cover and corresponds to the outlet. The pressing plate is connected to a connecting frame, and the connecting frame is connected to the top cover through a telescopic device. The telescopic device drives the connecting frame to drive the pressing plate to push the fluorescent marker out of the outlet.

[0027] A rotating device 1, provided on the top cover, for driving the rotating disk to rotate at a preset angle;

[0028] The detection sensor is arranged on the inner wall of the top cover and is electrically connected to the electrical mechanism, and is used to enable the electrical mechanism to control the rotating device to work after detecting the pressure plate signal.

[0029] A further improvement is that the fluorescent marker comprises:

[0030] The limiting column is movably inserted into a movable opening provided on the rotating disk;

[0031] An insert, provided at the bottom of the limit column, for inserting into the soil at the foundation pit support pile;

[0032] A transparent cylinder is arranged on the top of the limiting column and contains fluorescent material;

[0033] The cover body is detachably arranged on the top of the transparent tube.

[0034] A further improvement is that the displacement monitoring and early warning system further comprises a target cleaning module arranged outside the bearing frame, which is used to clean the target on the foundation pit support pile;

[0035] The target cleaning module includes:

[0036] A support frame, which is movably sleeved on the outside of the bearing frame, and the support frame is connected to the second telescopic device and is driven by the second telescopic device to move horizontally relative to the bearing frame;

[0037] Two sets of movable frames are respectively slidably sleeved on both sides of the support frame, and the movable frames and the support frame are connected by elastic connecting pieces;

[0038] A contact wheel is rotatably mounted on a movable frame and is used for sliding contact with the outer wall of the foundation pit support pile;

[0039] The brush member contacts the outer wall of the foundation pit supporting pile when the contact wheel contacts the outer wall of the foundation pit supporting pile, and is used for cleaning the target.

[0040] A further improvement is that the brush member is arranged at one end of the transmission telescopic rod, the movable section of the transmission telescopic rod is rotatably inserted on the movable frame, the fixed section of the transmission telescopic rod is rotatably inserted on the bearing plate, the bearing plate is fixed in the support frame, and a second rotating device is provided on the bearing plate, and the second rotating device is transmission-connected to the transmission telescopic rod.

[0041] A further improvement is that the second telescopic device is fixed on a sliding plate, the sliding plate is slidably arranged in a vertical through hole opened on the support frame, the sliding plate is threadedly sleeved on an adjusting screw, and the adjusting screw is rotatably arranged in the vertical through hole.

[0042] A further improvement is that a protective plate is provided on the top of the laser detector, and a photovoltaic panel electrically connected to the electrical mechanism is provided on the protective plate.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The present invention collects the position data of foundation pit support piles through the collection module and processes and analyzes it through the control terminal. When the result is that the foundation pit support piles are displaced, not only an early warning is issued, but also the marking module is used to mark the displaced foundation pit support piles, thereby reducing the difficulty of subsequent analysis and processing work, and facilitating relevant personnel to accurately locate the specific location where the displacement occurs and take necessary measures;

[0045] 2. The marking module of the present invention has a plurality of fluorescent marking parts. Different fluorescent marking parts can be made to correspond to the outlets by rotating the rotating disk and the rotating device. When marking, the fluorescent marking parts are pushed out of the outlets and inserted into the soil by the pressing plate, the connecting frame and the telescopic device to realize marking. It is easy to use. At the same time, the fluorescent marking parts used can easily help relevant personnel find the marked foundation pit support pile positions even at night or in an environment with insufficient light;

[0046] 3. The present invention is also provided with a target cleaning module. When the sliding part moves on the slide rail and the displacement of the foundation pit support pile is monitored by the laser detector, the brush part is driven to rotate through the transmission telescopic rod and the rotating device to rub the target before the laser detector corresponds to the corresponding target on the outer wall of the foundation pit support pile, so as to pre-clean the target and effectively remove dust, dirt and other impurities on the surface of the target to prevent affecting the reflection effect of the laser beam, thereby improving the accuracy and stability of the laser detector in identifying the target and ensuring the accuracy and reliability of displacement monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the acquisition module in the displacement monitoring and early warning system of the present invention;

[0048] Figure 2 For the present invention Figure 1 Another perspective structural diagram;

[0049] Figure 3 It is a schematic diagram of the structure of the marking module of the present invention;

[0050] Figure 4 For the present invention Figure 3 Middle structure cross-section view.

[0051] In the figure: 1. slide rail; 2. sliding part; 3. bearing frame; 4. laser detector; 5. photovoltaic panel; 6. electrical mechanism; 7. marking module; 71. housing; 72. mounting frame; 73. rotating disk; 74. outlet; 75. rubber sheet; 76. limit column; 77. insert; 78. transparent tube; 79. fluorescent material; 710. cover; 711. top cover; 712. pressure plate; 713. connecting frame; 714. telescopic device 1; 715. rotating device 1; 716. detection sensor; 8. target cleaning module; 81. supporting frame; 82. telescopic device 2; 83. movable frame; 84. elastic connecting member; 85. transmission telescopic rod; 86. contact wheel; 87. brush member; 88. rotating device 2; 89. adjusting screw; 9. target. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The foundation pit support pile displacement monitoring and early warning system based on laser technology includes:

[0054] At least one acquisition module, used to cooperate with the target 9 provided on the foundation pit support pile to collect the foundation pit support pile position data Xi (including three-dimensional coordinates, inclination angle, etc.), and the acquisition module is provided with a marking module 7 to facilitate rapid identification and processing by on-site personnel;

[0055] Common types of targets 9 include spherical targets, planar targets (such as checkerboard targets), etc., which are usually made of high-reflectivity materials, such as metal or plastic with special coatings. These materials can ensure strong reflection of laser signals and improve the recognition rate and positioning accuracy of targets 9. They are usually used in conjunction with laser detection equipment, which measures the distance and shape of the target object by emitting a laser beam and receiving the signal reflected by the target 9;

[0056] The control terminal is wirelessly connected to the acquisition module to receive, process and analyze the position data Xi of the foundation pit support piles. The two realize data transmission through wireless communication technologies such as Wi-Fi, 4G / 5G, LoRa, etc., to ensure the real-time and reliability of the monitoring data, obtain the result of whether the foundation pit support piles are displaced, and issue an early warning when the result is that the foundation pit support piles are displaced, and drive the marking module 7 to mark the displaced foundation pit support piles;

[0057] Preferably, the control terminal of this embodiment includes:

[0058] The data receiving module is used to receive the collected foundation pit support pile position data Xi to ensure the integrity and accuracy of the data;

[0059] The data analysis module is used to compare the collected foundation pit support pile position data Xi with the corresponding foundation pit support pile position data X stored in the database, and to determine whether the support pile has been displaced by calculating parameters such as displacement and inclination angle change, and obtain the result of whether the foundation pit support pile has been displaced;

[0060] The early warning module is used to issue an alarm message when the result is displacement of foundation pit support piles, for example, to notify relevant personnel through various means such as sound, light, text message, email, etc.

[0061] Preferably, the data analysis module of this embodiment is also used to replace the corresponding foundation pit support pile position data X in the database with the collected foundation pit support pile position data Xi after comparison. By replacing the old data X with the latest data Xi, the timeliness and accuracy of the database are maintained, which facilitates long-term monitoring and trend analysis.

[0062] See also Figure 1-Figure 2 Preferably, the acquisition module of this embodiment includes:

[0063] Slide rail 1, horizontally laid at the foundation pit support piles to be monitored;

[0064] A sliding member 2 is movably disposed on the slide rail 1, and the sliding member 2 is, for example, a sliding seat slidably sleeved on the slide rail 1 and an electric pulley disposed on the sliding seat;

[0065] The carrier 3 is arranged on the sliding member 2 and moves on the slide rail 1 along with the sliding member 2;

[0066] The laser detector 4 is mounted on the support frame 3 through a bracket, and is used to cooperate with the target 9 to collect the position data Xi of the foundation pit support piles. The laser detector 4 is a conventional device in the art and will not be described in detail here.

[0067] The electrical mechanism 6 is arranged on the bracket and is used to electrically connect the laser detector 4 and the control terminal. The electrical mechanism 6 includes a housing 71, a battery arranged in the housing 71, a wireless communicator, a controller, etc.;

[0068] During monitoring, the sliding member 2 drives the carrier frame 3 to move along the slide rail 1. During the movement, the laser detector 4 intermittently corresponds to different foundation pit support piles, and the laser detector 4 cooperates with the target 9 on the foundation pit support pile to collect the position data Xi of the foundation pit support pile.

[0069] Preferably, a protective plate is provided on the top of the laser detector 4 of this embodiment to protect the laser detector 4 from rain, and a photovoltaic panel 5 electrically connected to the electrical mechanism 6 is provided on the protective plate. The photovoltaic panel 5 is used to cooperate with the battery to power the electrical equipment in this system.

[0070] See also Figure 3-Figure 4

[0071] Preferably, the marking module 7 of this embodiment includes:

[0072] The housing 71 has a circular cross section and is disposed at the lower part of one side of the support frame 3 through a mounting frame 72. A top cover 711 is detachably disposed on the top of the housing 71. The housing 71 and the top cover 711 can be connected by a bolt-type structure.

[0073] The rotating disk 73 is rotatably disposed in the housing 71 via an axis, and a plurality of groups of fluorescent markers are inserted in a circular array on the rotating disk 73;

[0074] The outlet 74 is provided at the bottom of the housing 71 and corresponds to one of the fluorescent markers, so that the fluorescent marker passes through the outlet 74 and enters the soil at the corresponding position. The inner wall of the outlet 74 is provided with a plurality of rubber sheets 75 in a circular array. When the fluorescent marker does not pass through the outlet 74, the rubber sheet 75 does not deform so that the fluorescent marker does not move downward. When the fluorescent marker is pressed downward, the rubber sheet 75 deforms so that the fluorescent marker passes through the outlet 74.

[0075] The pressing plate 712 is movably disposed in the through opening of the top cover 711 and corresponds to the outlet 74. The pressing plate 712 is connected to a connecting frame 713. The connecting frame 713 is connected to the top cover 711 through a telescopic device 1 714. The telescopic device 1 714 drives the connecting frame 713 to drive the pressing plate 712 to push the fluorescent marker out of the outlet 74. The telescopic device 1 714 is, for example, an electric telescopic rod.

[0076] The first rotating device 715 is disposed on the top cover 711 and is used to drive the rotating disk 73 to rotate at a preset angle. The first rotating device 715 is, for example, a motor and a reducer. Each time the first rotating device 715 drives the rotating disk 73 to rotate to a preset angle, a fluorescent marking element is aligned with the outlet 74.

[0077] The detection sensor 716 is disposed on the inner wall of the top cover 711 and is electrically connected to the electrical mechanism 6, and is used to enable the electrical mechanism 6 to control the rotation device 715 to work after detecting the signal of the pressure plate 712. The detection sensor 716 is, for example, a pressure sensor, and its model is not described in detail here;

[0078] During marking, the telescopic device 714 drives the connecting frame 713 to drive the pressure plate 712 to push the corresponding fluorescent marking piece out of the outlet 74 and insert it into the soil. Then, the telescopic device 714 drives the connecting frame 713 to drive the pressure plate 712 to reset. The pressure plate 712 resets and contacts the detection sensor 716. After the detection sensor 716 detects the signal of the pressure plate 712, the electrical mechanism 6 controls the rotating device 715 to work. The rotating device 715 drives the rotating disk 73 to rotate a preset angle and then closes, so that another fluorescent marking piece corresponds to the outlet 74.

[0079] Preferably, the fluorescent marker of this embodiment includes:

[0080] The limiting post 76 is movably inserted into a movable opening formed on the rotating disk 73;

[0081] The insert 77 is provided at the bottom of the limit column 76 and is used to be inserted into the soil at the foundation pit support pile. The insert 77 is conical in shape, and a ball can be embedded at the bottom end thereof to contact the bottom inner wall of the housing 71 to prevent the tip of the insert 77 from damaging the bottom wall of the housing 71, while not affecting its movement with the rotating disk 73;

[0082] The transparent cylinder 78 is arranged on the top of the limiting column 76, and a fluorescent material 79 is stored inside the transparent cylinder. The fluorescent material 79 is, for example, fluorescent powder. The fluorescent material 79 can emit light at night. After the fluorescent marker is inserted into the soil, it can also play a role in reminding relevant personnel at night, thereby improving the marking effect.

[0083] The cover 710 is detachably mounted on the top of the transparent tube 78 . The cover 710 and the transparent tube 78 can be connected by bolts or threads to facilitate replacement of the fluorescent material 79 inside.

[0084] It should be noted that a plurality of strip-shaped openings are provided on the side wall of the housing 71 so that the fluorescent material 79 in the transparent tube 78 can store light energy during the day.

[0085] Preferably, the displacement monitoring and early warning system of this embodiment further includes a target cleaning module 8 disposed outside the carrier 3, which is used to clean the target 9 on the foundation pit support pile to prevent the target 9 from being contaminated with dust and affecting the use of the laser detector 4, thereby avoiding affecting the measurement accuracy;

[0086] The target cleaning module 8 includes:

[0087] The support frame 81 is U-shaped and is movably sleeved on the outside of the carrier frame 3. The support frame 81 is connected to the second telescopic device 82 and is driven by the second telescopic device 82 to move horizontally relative to the carrier frame 3. The second telescopic device 82 is, for example, an electric telescopic rod, etc. The position of the support frame 81 can be adjusted by the second telescopic device 82;

[0088] Two groups of movable frames 83 are respectively slidably sleeved on both sides of the support frame 81, and the movable frame 83 and the support frame 81 are connected by an elastic connecting member 84. Specifically, the movable frame 83 has a slider, and the support frame 81 is provided with a sliding opening adapted to the slider. The movable frame 83 can move relative to the support frame 81 through the slider matching the sliding opening. The elastic connecting member 84 is, for example, a guide rod arranged in the sliding opening and a spring arranged on the outer wall of the guide rod. The guide rod movably passes through the slider, and one end of the spring is connected to the inner wall of one side of the sliding opening, and the other end is connected to the slider.

[0089] The contact wheel 86 is rotatably arranged on the movable frame 83 and is used for sliding contact with the outer wall of the foundation pit supporting pile. When the sliding member 2 moves along the slide rail 1, the contact wheel 86 rolls along the outer wall of the foundation pit supporting pile. The movable frame 83 and the support frame 81 can move relative to each other. Even if the surface of the foundation pit supporting pile is uneven, the contact wheel 86 can maintain a stable rolling state through adaptive adjustment.

[0090] The brush member 87 contacts the outer wall of the foundation pit support pile when the contact wheel 86 contacts the outer wall of the foundation pit support pile, and is used to clean the target 9 from the surrounding Figure 2 It can be seen that the brush member 87 is located at the side of the support frame 81, and the laser detector 4 can rub the target 9 on the outer wall of the corresponding foundation pit support pile by the brush member 87 to pre-clean the target 9;

[0091] It should be noted that, initially, the position of the brush member 87 corresponds to the target 9 on the outer wall of the foundation pit supporting pile being detected.

[0092] Preferably, the brush member 87 of the present embodiment is arranged at one end of the transmission telescopic rod 85, the movable section of the transmission telescopic rod 85 is rotatably inserted on the movable frame 83 through a bearing, and the fixed section of the transmission telescopic rod 85 is rotatably inserted on the bearing plate through a bearing. The fixed section of the transmission telescopic rod 85 is cylindrical, and a rectangular through hole is opened inside it. The vertical cross-section of the movable section of the transmission telescopic rod 85 is rectangular. When the fixed section of the transmission telescopic rod 85 rotates, it can synchronously drive the movable section of the transmission telescopic rod 85 to rotate, and at the same time does not affect the movement of the brush member 87 with the movable frame 83 relative to the support frame 81. The support plate is fixed in the support frame 81, and a rotating device 88 is provided on the support plate. The rotating device 88 is, for example, a motor. The rotating device 88 and the transmission telescopic rod 85 are connected in transmission, and the two can be connected in transmission by a sprocket transmission group, and the sprocket transmission group includes a sprocket and a chain.

[0093] Preferably, the telescopic device 2 82 of this embodiment is fixed on a sliding plate, and the sliding plate is slidably arranged in a vertical opening opened on the carrier frame 3. The sliding plate is threadedly sleeved on an adjusting screw 89, and the adjusting screw 89 is rotatably arranged in the vertical opening. Two groups of adjusting screws 89 can be provided, and the threads respectively pass through the two sides of the sliding plate. The two groups of adjusting screws 89 can be connected to a handwheel structure through a sprocket transmission group. The handwheel structure is rotatably arranged on the inner wall of the vertical opening. The adjusting screw 89 can be rotated by rotating the handwheel structure, and then the adjusting screw 89 drives the sliding plate to move, so as to facilitate the adjustment of the position of the brush member 87 to make it correspond to the target 9.

[0094] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The foundation pit support pile displacement monitoring and early warning system based on laser technology is characterized by: include: At least one acquisition module, used for cooperating with a target (9) arranged on a foundation pit support pile to acquire foundation pit support pile position data Xi, wherein the acquisition module is provided with a marking module (7); The control terminal is wirelessly connected to the acquisition module, and is used to receive, process and analyze the position data Xi of the foundation pit support piles, obtain the result of whether the foundation pit support piles are displaced, and issue an early warning when the result is that the foundation pit support piles are displaced, and at the same time drive the marking module (7) to mark the displaced foundation pit support piles.

2. The displacement monitoring and early warning system according to claim 1 is characterized in that: The control terminal includes: A data receiving module is used to receive the collected foundation pit support pile position data Xi; The data analysis module is used to compare the collected foundation pit support pile position data Xi with the corresponding foundation pit support pile position data X stored in the database to obtain the result of whether the foundation pit support pile is displaced; The early warning module is used to issue an alarm message when the result is displacement of foundation pit support piles.

3. The displacement monitoring and early warning system according to claim 2 is characterized in that: The data analysis module is also used to replace the corresponding foundation pit support pile position data X in the database with the collected foundation pit support pile position data Xi after comparison.

4. The displacement monitoring and early warning system according to claim 1, characterized in that: The acquisition module comprises: Slide rail (1); A sliding member (2) is movably disposed on the slide rail (1); A carrier frame (3) is arranged on the sliding member (2); A laser detector (4) is mounted on the support frame (3) via a bracket and is used to cooperate with the target (9) to collect the position data Xi of the foundation pit support piles; The electrical mechanism (6) is arranged on the bracket and is used to electrically connect the laser detector (4) and the control terminal.

5. The displacement monitoring and early warning system according to claim 4 is characterized in that: The marking module (7) comprises: The outer shell (71) is arranged on the lower part of one side of the support frame (3) through the mounting frame (72), and a top cover (711) is detachably provided on the top of the outer shell; A rotating disk (73) is rotatably disposed in the housing (71), and a plurality of groups of fluorescent marking elements are inserted in a circular array on the rotating disk (73); An outlet (74) is provided at the bottom of the housing (71) and directly corresponds to one of the fluorescent marking elements, and a plurality of rubber sheets (75) are provided in a circular array on the inner wall of the outlet (74); A pressing plate (712) is movably disposed in a through opening on the top cover (711) and is directly corresponding to the outlet (74); the pressing plate (712) is connected to a connecting frame (713); the connecting frame (713) is connected to the top cover (711) via a telescopic device (714); the telescopic device (714) drives the connecting frame (713) to drive the pressing plate (712) to push the fluorescent marker out of the outlet (74); A rotating device (715) is provided on the top cover (711) and is used to drive the rotating disk (73) to rotate at a preset angle; The detection sensor (716) is arranged on the inner wall of the top cover (711) and is electrically connected to the electrical mechanism (6), and is used to enable the electrical mechanism (6) to control the rotation device (715) to work after detecting the signal of the pressure plate (712).

6. The displacement monitoring and early warning system according to claim 5, characterized in that: The fluorescent marker comprises: A limiting post (76) is movably inserted into a movable opening formed on the rotating disk (73); An insert (77) is provided at the bottom of the limit column (76) and is used for being inserted into the soil at the foundation pit support pile; A transparent cylinder (78) is arranged on the top of the limiting column (76), and contains fluorescent material (79); The cover (710) is detachably mounted on the top of the transparent tube (78).

7. The displacement monitoring and early warning system according to claim 1, characterized in that: The displacement monitoring and early warning system also includes a target cleaning module (8) arranged outside the support frame (3) and used for cleaning the target (9) on the foundation pit support pile; The target cleaning module (8) comprises: A support frame (81) is movably sleeved on the outside of the bearing frame (3), the support frame (81) is connected to the second telescopic device (82), and is driven by the second telescopic device (82) to move horizontally relative to the bearing frame (3); Two groups of movable frames (83) are respectively slidably mounted on both sides of the support frame (81), and the movable frames (83) and the support frame (81) are connected via an elastic connecting piece (84); A contact wheel (86) is rotatably mounted on the movable frame (83) and is used for sliding contact with the outer wall of the foundation pit support pile; The brush member (87) contacts the outer wall of the foundation pit supporting pile when the contact wheel (86) contacts the outer wall of the foundation pit supporting pile, and is used for cleaning the target (9).

8. The displacement monitoring and early warning system according to claim 7, characterized in that: The brush member (87) is arranged at one end of the transmission telescopic rod (85); the movable section of the transmission telescopic rod (85) is rotatably inserted on the movable frame (83); the fixed section of the transmission telescopic rod (85) is rotatably inserted on the bearing plate; the bearing plate is fixed in the support frame (81); a second rotating device (88) is arranged on the bearing plate; the second rotating device (88) is transmission-connected to the transmission telescopic rod (85).

9. The displacement monitoring and early warning system according to claim 7, characterized in that: The second telescopic device (82) is fixed on a sliding plate, the sliding plate is slidably arranged in a vertical opening opened on the support frame (3), the sliding plate is threadedly sleeved on an adjusting screw (89), and the adjusting screw (89) is rotatably arranged in the vertical opening.

10. The displacement monitoring and early warning system according to claim 4, characterized in that: A protective plate is provided on the top of the laser detector (4), and a photovoltaic panel (5) electrically connected to the electrical mechanism (6) is provided on the protective plate.

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