Settlement monitoring system

Abstract

The invention provides a settlement monitoring system. The settlement monitoring system comprises a settlement monitoring device, a data transmission device and a data processing device. The settlement monitoring device is used for collecting sensor data, elevation data and guy meter data, the data transmission device is used for transmitting the sensor data, the elevation data and the guy meter data to the data processing device, and the data processing device is used for determining the settlement condition of the dam according to the sensor data, the elevation data and the guy meter data. The settlement monitoring system provided by the invention can ensure that the sensor is intact and smoothly installed in water, the elevation starting point is stable, the equipment is prevented from being damaged, the long-time stable operation is realized, and the open sea communication is reliable.

Description

Technical Field

[0001] The invention relates to the technical field of automatic settlement monitoring, and in particular to a settlement monitoring system. Background Art

[0002] Marine environmental governance and restoration projects have been launched one after another, and new aquaculture industries such as marine ranches have flourished. The construction of these projects involves the construction of marine dams. There are huge differences between marine dam construction and land roadbed construction. The base of marine dams is often silty and soft, which requires both building a solid bottom protection structure and squeezing out silt and draining water. The construction process is complex and the key processes and materials used in layered construction are different. The embankment is very prone to extrusion and settlement, and its settlement shows the characteristics of unevenness across the entire cross section.

[0003] Real-time monitoring of dam settlement can more scientifically determine soil consolidation and control construction progress, and is also conducive to the control of construction safety. The total settlement caused by extrusion and sinking is an important reference indicator for statistical material consumption. Due to the huge impact force and load pressure of layered loading in the marine embankment environment and the strong corrosiveness of seawater, the materials, range, hardness, corrosion resistance, compression resistance, and communication design used in the existing flexible array settlement monitoring equipment are mainly designed and manufactured for land construction projects. The current settlement monitoring technology cannot be directly applied to the full-section monitoring of the marine embankment base, and targeted research and development is required.

[0004] In summary, the settlement monitoring system currently used in land construction projects cannot be applied to marine construction scenarios. Therefore, there is an urgent need for a settlement monitoring system applied to marine construction scenarios. Summary of the invention

[0005] The embodiment of the present application provides a settlement monitoring system, which can ensure that the sensor is intact and can be smoothly installed in the water, the elevation starting point is stable, the equipment is protected from being damaged, the system operates stably for a long time, and the offshore communication is reliable.

[0006] An embodiment of the present application provides a settlement monitoring system, which includes a settlement monitoring device, a data transmission device and a data processing device; the settlement monitoring device includes a monitoring sensor group, a communication module, an elevation monitoring module, a data acquisition module and a wire gauge; the monitoring sensor group is used to monitor sensor data and send the sensor data to the data acquisition module; the elevation monitoring module is used to monitor elevation data and send the elevation data to the data acquisition module; the wire gauge is used to monitor wire gauge data and send the wire gauge data to the data acquisition module; the data acquisition module is used to collect the sensor data, the elevation data and the wire gauge data, and send them to the communication module; the communication module is used to send the sensor data, the elevation data and the wire gauge data to the data transmission device; the data transmission device is used to transmit the sensor data, the elevation data and the wire gauge data to the data processing device; the data processing device is used to determine the settlement of the dam based on the sensor data, the elevation data and the wire gauge data.

[0007] In one embodiment, the settlement monitoring device also includes a collection platform, an elevation calculation platform, a pulley and a guy rope; the collection platform includes an above-water platform, an intermediate support section and an underwater base; the communication module and the elevation monitoring module are installed on the top of the above-water platform, and the data collection module and the guy rope are installed inside the above-water platform; the elevation calculation platform is installed on the underwater base, and the monitoring sensor group is installed on the elevation calculation platform; the pulley includes a first pulley and a second pulley, the first pulley is installed on the above-water platform, and the second pulley is installed on the elevation calculation platform; one end of the guy rope is connected to the guy rope, and the other end is connected to the monitoring sensor group through the first pulley and the second pulley, so that the monitoring sensor group slides in the elevation calculation platform.

[0008] In one embodiment, the above-water platform is a rectangular structure, the top of the above-water platform is a first mounting platform, and the bottom of the above-water platform is a second mounting platform; the underwater base includes a third mounting platform and a plurality of column feet, one end of each of the plurality of column feet is connected to the third mounting platform; the second mounting platform is connected to the third mounting platform via the intermediate support section.

[0009] In one embodiment, the communication module and the elevation monitoring module are installed on the top of the water platform, including: the communication module and the elevation monitoring module are installed on the first mounting platform; the first pulley is installed on the water platform, including: the first pulley is installed on the edge of the second mounting platform; the second mounting platform is a solid structure; the data acquisition module and the wire gauge are installed inside the water platform, including: the data acquisition module is installed on the second mounting platform, and the wire gauge is installed on the data acquisition module; the elevation calculation platform is installed on the underwater base, including: the elevation calculation platform is installed on the third mounting platform.

[0010] In one embodiment, the elevation calculation platform is a U-shaped groove structure, and a plurality of pipes are respectively connected to both sides of the elevation calculation platform in the opening direction of the U-shaped groove structure, and the second pulley is installed at one end of the elevation calculation platform.

[0011] In one embodiment, the monitoring sensor group includes a plurality of sensor components, and the plurality of sensor components are connected head to tail to form a continuous ruler chain structure; the sensor component includes a micro-electromechanical system MEMS sensor module, a protective cover, side wings and a U-shaped bottom groove, the MEMS sensor module is installed inside the U-shaped bottom groove, the protective cover is connected to the U-shaped bottom groove, and the side wings are installed on the outside of the U-shaped bottom groove; the side wings include a clip-type connector and a balance board, one end of the clip-type connector is connected to the outside of the U-shaped bottom groove, and the other end is connected to the balance board.

[0012] In one embodiment, the data transmission device is used to transmit the sensor data, the elevation data and the wire gauge data to the data processing device, including: the data transmission device transmits the sensor data, the elevation data and the wire gauge data to the data processing device through the short message communication function of the Beidou-3 satellite system.

[0013] In one embodiment, the sensor assembly is used to collect the offset angle of the sensor assembly in the vertical direction and the offset angle in the horizontal direction; the sensor data includes the length of each sensor assembly, the offset angle of each sensor assembly in the vertical direction and the offset angle of each sensor assembly in the horizontal direction.

[0014] In one embodiment, the data processing device is used to determine the settlement of the dam based on the sensor data, the elevation data and the wire gauge data, including: determining the node coordinates of the first sensor component based on the elevation data and the wire gauge data; determining the node coordinates of each sensor component based on the sensor data and the node coordinates of the first sensor component; determining the settlement of the dam based on the node coordinates of each sensor component at different time points.

[0015] In one embodiment, determining the node coordinates of each sensor component based on the sensor data and the node coordinates of the first sensor component includes: determining the vertical offset and the horizontal offset of each sensor component based on the length of each sensor component, the offset angle of each sensor component in the vertical direction, and the offset angle of each sensor component in the horizontal direction; determining the node coordinates of each sensor component based on the node coordinates of the first sensor component and the vertical offset and the horizontal offset of each sensor component.

[0016] The settlement monitoring system provided in the embodiment of the present application can ensure that the sensor is intact and can be smoothly installed in the water, the elevation starting point is stable, the equipment is protected from damage, the system operates stably for a long time, and the offshore communication is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application are briefly introduced below.

[0018] Figure 1 is a schematic diagram of the displacement of the settlement deformation sensor provided in an embodiment of the present application; Figure 2 is a schematic diagram of a settlement monitoring system provided in an embodiment of the present application; Figure 3 is a schematic diagram of a settlement monitoring device provided in an embodiment of the present application; Figure 4 is a schematic diagram of another settlement monitoring device provided in an embodiment of the present application; Figure 5 It is a schematic diagram of the elevation calculation platform provided in the embodiment of the present application; Figure 6 is a schematic diagram of the overall structure of the sensor assembly provided in an embodiment of the present application; Figure 7 is a schematic diagram of a split structure of a sensor assembly provided in an embodiment of the present application; Figure 8 is a schematic diagram of another sensor assembly split structure provided in an embodiment of the present application; Fig. 9 is a schematic diagram of a wing provided in an embodiment of the present application; Fig.10 is a schematic diagram of the wing assembly provided in an embodiment of the present application; Fig.11 is a schematic diagram of another settlement monitoring system provided in an embodiment of the present application; Fig.12 is a schematic diagram of the sensor assembly offset provided by an embodiment of the present application; Fig.13 It is a schematic diagram of the positional relationship between the GNSS monitoring point and the underwater elevation starting point provided in the embodiment of the present application; Fig.14 It is a reference diagram for settlement displacement calculation provided in the embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0020] Similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] Figure 1 is a schematic diagram of the displacement of the settlement deformation sensor provided in the embodiment of the present application, Figure 1 In the process of building a sea embankment, the load in the middle is the largest, and the settlement is also the largest. A large settlement in the middle will form a traction force on both ends, causing the sensors at both ends to slide toward the middle. Therefore, the sensors at both ends of the settlement monitoring cannot be fixed, otherwise, if the settlement in the middle is too large, the two ends will be broken if they are fixed. In addition to considering the problem of the sensor being intact, the settlement monitoring system used in marine construction scenarios also needs to consider a series of issues such as the smooth installation of the sensor in the water, the stability of the elevation starting point, long-term stable operation, and reliable offshore communication.

[0022] In view of this, in order to solve the above problems, an embodiment of the present application provides a settlement monitoring system, which can ensure that the sensor is intact and can be installed smoothly in the water, the elevation starting point is stable, the equipment is protected from damage, the system operates stably for a long time, and the offshore communication is reliable.

[0023] Figure 2 is a schematic diagram of a settlement monitoring system provided in an embodiment of the present application, Figure 2 In the embodiment, the settlement monitoring system comprises a settlement monitoring device 1, a data transmission device 2 and a data processing device 3. The settlement monitoring device 1 is used to collect sensor data, elevation data and wire gauge data, the data transmission device 2 is used to transmit the sensor data, elevation data and wire gauge data to the data processing device 3, and the data processing device 3 is used to determine the settlement of the dam according to the sensor data, elevation data and wire gauge data.

[0024] Figure 3 is a schematic diagram of a settlement monitoring device provided in an embodiment of the present application, Figure 3In the embodiment, the settlement monitoring device 1 includes a collection platform 10, an elevation calculation platform 11, a monitoring sensor group 12, a communication module 13, an elevation monitoring module 14, a data collection module 15, a pulley 16, a cable gauge 17 and a cable rope 18. The monitoring sensor group 12 is used to monitor sensor data and send the sensor data to the data collection module 15; the elevation monitoring module 14 is used to monitor elevation data and send the elevation data to the data collection module 15; the cable gauge 17 is used to monitor the cable gauge data and send the cable gauge data to the data collection module 15; the data collection module 15 is used to collect sensor data, elevation data and cable gauge data and send them to the communication module 13; the communication module 13 is used to send the sensor data, elevation data and cable gauge data to the data transmission device 2. The communication module 13 can be, for example, a Beidou transmitter.

[0025] Figure 4 is a schematic diagram of another settling monitoring device provided in an embodiment of the present application, Figure 4 In the figure, the collection platform 10 includes an above-water platform 101, an intermediate support section 102 and an underwater base 103. The main structure of the collection platform 10 is made of steel pipes, and the collection platform 10 is used to provide a stable basic carrying platform. The above-water platform 101 is a rectangular parallelepiped structure. The top of the above-water platform 101 is a first mounting platform 104, which can be a hollow structure. The bottom of the above-water platform 101 is a second mounting platform 105, which can be a solid structure. The above-water platform 101 is surrounded by a fence for connecting the first mounting platform 104 and the second mounting platform 105, which can be a hollow structure. The underwater base 103 includes a third mounting platform 106 and a plurality of column feet 107, and the number of the column feet can be 6. One end of each column foot of the plurality of column feet 107 is connected to the third mounting platform 106, and the other end is connected to the dam to be monitored, and is used to be attached to the marine structure or welded to the bored pile foundation. The second mounting platform 105 and the third mounting platform 106 are connected via the middle support section 102 , and the connection can be achieved by welding or integral molding, which is not limited here.

[0026] The communication module 13 and the elevation monitoring module 14 are installed on the top of the water platform 101. The communication module 13 can be a Beidou communication antenna pole, and the elevation monitoring module 14 can be a GNSS (Global Navigation Satellite System) elevation monitoring pole, whose top is a GNSS monitoring point. The communication module 13 is used to send the sensor data, the elevation data and the wire gauge data to the data transmission device, such as for the transmission of wire gauge information, GNSS information, and MEMS (Micro-Electro-Mechanical System) monitoring information. The elevation monitoring module 14 is used to monitor elevation data, such as for monitoring the elevation change of the platform frame, and calculating it to the underwater elevation starting point. The communication module 13 and the elevation monitoring module 14 are installed on the top of the water platform 101, specifically including: the communication module 13 and the elevation monitoring module 14 are installed on the first installation platform 104. The communication module 13 and the elevation monitoring module 14 should not be too high, otherwise the pole will shake due to airflow, affecting the monitoring and communication effects.

[0027] The data acquisition module 15 and the cable gauge 17 are installed inside the water platform 101. The data acquisition module 15 is used to collect the sensor data, the elevation data and the cable gauge data, such as collecting cable gauge information, GNSS information, MEMS monitoring information, and performing data analysis, re-editing, format standardization, etc., and sending them to the communication module 13. The cable gauge 17 is used to monitor the cable gauge data, such as detecting the slippage of the monitoring sensor group 12. The second installation platform 105 is a solid structure, such as a steel plate; the data acquisition module 15 and the cable gauge 17 are installed inside the water platform 101, specifically including: the data acquisition module 15 is installed on the second installation platform 105, and the cable gauge 17 is installed on the data acquisition module 15.

[0028] The elevation calculation platform 11 is installed on the underwater base 103, and the monitoring sensor group 12 is installed on the elevation calculation platform 11. The elevation calculation platform 11 is used to maintain the underwater initial elevation. As long as the first section of the sensor assembly does not slide out of the groove of the elevation calculation platform 11, the initial elevation can be calculated according to the elevation monitoring module 14. The monitoring sensor group 12 is used to monitor sensor data, for example, to monitor the settlement information of each node of the entire cross-section of the base. The elevation calculation platform 11 is installed on the underwater base 103, specifically including: the elevation calculation platform 11 is installed on the third installation platform 106. The elevation calculation platform 11 and the third installation platform 106 can be connected by welding.

[0029] The pulley 16 includes a first pulley 108 and a second pulley 109, and the two pulleys are used to turn the pull rope 18 between the pull rope meter 17 and the monitoring sensor group. The first pulley 108 is installed on the water platform 101, and the second pulley 109 is installed on the elevation calculation platform 11. The first pulley 108 is installed on the water platform 101, specifically including: the first pulley 108 is installed on the edge of the second installation platform 105. The first pulley 108 is used to turn the pull rope 18 downward, and the second pulley 109 is used to turn the pull rope upward. The first pulley 108 and the second pulley 109 can be change-of-direction pulleys.

[0030] One end of the pull rope 18 is connected to the pull rope meter 17, and the other end is connected to the monitoring sensor group 12 through the first pulley 108 and the second pulley 109, so that the monitoring sensor group 12 slides in the height calculation platform 11. The pull rope 18 can be a steel wire rope.

[0031] Figure 5 is a schematic diagram of the elevation calculation platform provided in the embodiment of the present application. Figure 5 In the figure, the elevation calculation platform 11 is a U-shaped groove structure, which is convenient for the monitoring sensor group 12 to stably place the section calculated in the groove and prevent it from sliding out of the groove. In the opening direction of the U-shaped groove structure, multiple row pipes 110 are connected to both sides of the elevation calculation platform 11. The row pipes 110 can be welded on the elevation calculation platform 11, kept vertically upward, and exposed to water at the lowest tide, so that when installing or subsequently adding the sensor assembly 111, it can be smoothly inserted into the groove with reference to the dew point position. A second pulley 109 is installed at one end of the elevation calculation platform 11.

[0032] The monitoring sensor group 12 includes a plurality of sensor components 111, which are connected head to tail to form a continuous scale chain structure. Among the plurality of sensor components 111, the first sensor component (i.e., the first sensor component) is closest to the second pulley, and the first sensor component is connected to the pull rope 18. Among the plurality of sensor components 111, the section in the groove of the elevation calculation platform 11 is the section where the monitoring sensor group 12 is calculated. It is necessary to ensure that the first sensor component is in the groove in order to calculate the starting elevation. The end of the first sensor component connected to the pull rope 18 is the underwater elevation calculation starting point.

[0033] Figure 6 is a schematic diagram of the overall structure of the sensor assembly provided in an embodiment of the present application, Figure 7 is a schematic diagram of a split structure of a sensor assembly provided in an embodiment of the present application, Figure 6 and Figure 7In the figure, the sensor assembly 111 includes a micro-electromechanical system MEMS sensor module 112, a protective cover 113, side wings 114 and a U-shaped bottom groove 115. The MEMS sensor module 112 is installed inside the U-shaped bottom groove 115, the protective cover 113 is connected to the U-shaped bottom groove 115, and the side wings 114 are installed on the outside of the U-shaped bottom groove 115.

[0034] Figure 8 is a schematic diagram of another sensor assembly split structure provided in an embodiment of the present application, Figure 8 In the figure, the MEMS sensor module 112 is encapsulated in a stainless steel box body with a 3M epoxy resin potting glue with high corrosion resistance. The two ends of the bottom plate of the MEMS sensor module 112 are semicircular, and the first screw holes 116 are reserved at both ends to facilitate fixing the sensor on the second screw hole 117 of the U-shaped bottom groove 115. There are connecting parts 118 at both ends of the U-shaped bottom groove 115. The top of the connecting part 118 is designed to be semicircular. A third screw hole 119 is provided in the connecting part to facilitate the connection between multiple sensor components to form a continuous scale chain structure. The spacing between the third screw holes 119 at both ends is the hypotenuse reference value of the settlement amount calculated by trigonometric height. The fourth screw hole 120 is designed on the upper part of the groove body of the U-shaped bottom groove, which is used to fix it with the fifth screw hole 121 of the protective cover 113 through screws. The protective cover 113 and the U-shaped bottom groove 115 can both be made of stainless steel.

[0035] Fig. 9 is a schematic diagram of the wing provided in the embodiment of the present application, Fig. 9 In the embodiment, the side wing 114 includes a clip-type connector 122 and a balance plate 123 , one end of the clip-type connector 122 is connected to the outer side of the U-shaped bottom groove 115 , and the other end is connected to the balance plate 123 .

[0036] Fig.10 is a schematic diagram of the wing assembly provided in the embodiment of the present application, Fig.10 In the embodiment, the clamp-type connector 122 allows the balance board 123 to rotate 45° left and right, so that it can rotate to form a fishbone-shaped balance array when pulled or squeezed underwater, so as to keep the sensor assembly 111 stable underwater. The clamp-type connector 122 is connected to the balance board 123 by screws, and fixes the balance board in the clamp shape. The balance board 123 is composed of a straight plate and a semicircular plate. The semicircular structure of the semicircular plate is convenient for reducing the sliding resistance and preventing it from being torn off when pulled underwater. The side wing 114 is fixed to the sixth screw hole 124 of the U-shaped bottom groove 115 by screws. The sixth screw hole 124 is located on the side of the U-shaped bottom groove 115 near the bottom, so as to be close to the mud surface.

[0037] Fig.11 is a schematic diagram of another settlement monitoring system provided in an embodiment of the present application, Fig.11In the embodiment, the settlement monitoring device 1 includes a Beidou transmitter, which is used to send sensor data, elevation data and wire gauge data to the data transmission device 2. The data processing device 3 includes a Beidou receiver, which is used to receive the sensor data, elevation data and wire gauge data from the data transmission device 2. The data transmission device 2 is used to transmit the sensor data, elevation data and wire gauge data to the data processing device 3, including: the data transmission device 2 transmits the sensor data, elevation data and wire gauge data to the data processing device 3 through the short message communication function of the Beidou-3 satellite system.

[0038] In some embodiments, the settlement monitoring device 1 is also used to pre-process the sensor data, elevation data and wire gauge data, such as re-encoding and encryption. At this time, the Beidou transmitter is used to send the pre-processed sensor data, elevation data and wire gauge data to the data transmission device 2, and the data transmission device 2 receives the pre-processed sensor data, elevation data and wire gauge data through the short message communication function of the Beidou-3 satellite system, and at the same time, transmits the pre-processed sensor data, elevation data and wire gauge data to the Beidou receiver. The data processing device 3 is also used to post-process the pre-processed sensor data, elevation data and wire gauge data, such as decryption, analysis, verification and other information processing technologies. At this time, the data processing device determines the settlement of the dam based on the post-processed data.

[0039] The sensor assembly 111 is used to collect the offset angle of the sensor assembly 111 in the vertical direction and the offset angle in the horizontal direction; the sensor data includes the length of each sensor assembly, the offset angle of each sensor assembly in the vertical direction and the offset angle of each sensor assembly in the horizontal direction. Fig.12 is a schematic diagram of the sensor component offset provided in an embodiment of the present application, Fig.12 In the figure, J0J1 can be any one of the multiple sensor components. After J0J1 is placed on the ocean dam for settlement monitoring, the sensor component will be offset to J0J1'. The angle α between J0J1' and the horizontal plane is the offset angle of the sensor component in the vertical direction. The angle β between the projection of J0J1' on the horizontal plane and J0J1 is the offset angle of the sensor component in the horizontal direction.

[0040] The data processing device is used to determine the settlement of the dam based on the sensor data, the elevation data and the wire gauge data, specifically including: determining the node coordinates of the first sensor component based on the elevation data and the wire gauge data; determining the node coordinates of each sensor component based on the sensor data and the node coordinates of the first sensor component; determining the settlement of the dam based on the node coordinates of each sensor component at different time points.

[0041] The node coordinates of each sensor component are determined according to the sensor data and the node coordinates of the first sensor component, specifically including: determining the vertical offset and the horizontal offset of each sensor component according to the length of each sensor component, the offset angle of each sensor component in the vertical direction, and the offset angle of each sensor component in the horizontal direction; determining the node coordinates of each sensor component according to the node coordinates of the first sensor component and the vertical offset and the horizontal offset of each sensor component.

[0042] Fig.13 is a schematic diagram of the positional relationship between the GNSS monitoring points and the underwater elevation starting points provided in the embodiment of the present application. Fig.13 In the equation, the elevation data is the coordinates of the GNSS monitoring point, specifically (x0, y0, h0). The wire gauge data is the distance from the underwater elevation starting point to the initial position. Initially, the sensor assembly is not offset and the wire gauge is not stretched. According to the wire gauge data, the initial position of the GNSS monitoring point and the underwater elevation starting point, the plane deviation △X, △Y, and the height difference △H of the underwater elevation starting point are determined, and the coordinates of the underwater elevation starting point are (x0-△X, y0-△Y, h0-△H). The vertical angle and horizontal angle of the sensor assembly in Section i are (α i , β i ), where the angle α extends outward from the underwater elevation starting point, with positive values ​​for upward and negative values ​​for downward; the angle β is positive for the left and negative for the right. The node coordinates of the i-th sensor component are (x i ,y i ,h i ), L j is the length of the jth sensor assembly. Fig.14 is a reference diagram for calculating the settlement displacement provided in the embodiment of the present application. Fig.14 The node coordinates can be calculated by the following formula: (x i ,y i ,h i ):

[0043] The settlement of the dam can be determined based on the node coordinates of each sensor component at different time points. The details are as follows: The settlement and translation are as follows:

[0044] Then, after obtaining the settlement amount for each period, comprehensively evaluate the settlement trend, characteristics and its impact: (1) Time trend analysis, draw a curve of the change of settlement amount over time to determine whether the settlement tends to be stable. v=Δh i / Δt , v is the sedimentation rate, Δt To compare the monitoring interval before and after, calculate the sedimentation rate v , analyze the fast and slow stages of the soft foundation consolidation process. (2) Spatial distribution analysis, compare the settlement of each node, identify the uneven settlement area, and focus on analyzing the settlement of key parts of the dam. Combine vertical and horizontal displacements to determine whether there is a large lateral displacement or settlement difference. (3) Cumulative settlement assessment, calculate the cumulative settlement of each node, evaluate the safety of the dam structure, and determine whether it meets the design standards. (4) Trend prediction and adjustment, based on the settlement law, predict the subsequent settlement trend, determine whether the settlement is stable, and provide a basis for the next step of construction. If abnormal settlement is found, adjust the construction plan or take remedial measures in a timely manner.

[0045] The monitoring sensor group 12, the communication module 13, the elevation monitoring module 14, the data acquisition module 15, and the wire gauge 17 are all power-consuming devices. In one embodiment, by integrating a power controller and developing a sleep and work control program through an embedded program, the switch power and work mode control of each power-consuming module are realized, and the power consumption of the base full-section settlement monitoring system is controlled at the lowest level to reduce the risk of power failure.

[0046] The above-mentioned embodiments of the present application provide a settlement monitoring system, which can ensure that the sensor is intact and can be smoothly installed in the water, the elevation starting point is stable, the equipment is protected from damage, the system operates stably for a long time, and the offshore communication is reliable.

[0047] The design concept of this application is to ensure that the underwater starting end is free and not fixed through the independent design of the above-water part (collection platform) and the underwater part (elevation calculation platform), install a cable gauge on the above-water part, bypass the upper and lower turning pulleys to connect the first section of the sensor kit, monitor the slippage of the first section of the sensor kit at the elevation calculation end, and solve the information connection problem between the above-water part (collection platform) and the underwater part (elevation calculation platform). By integrating the GNSS automatic monitoring module, the elevation changes of the entire platform are monitored in real time and calculated to the underwater elevation calculation platform according to the relative position relationship. Through the design of the stainless steel outer shell, the protective cover is used to avoid underwater collision and damage as much as possible; the side wing structure is developed to reduce the risk of underwater rollover and ensure stable underwater operation. In order to solve the problem of too many sensors and high power consumption, the power control unit is integrated in the data acquisition module, and the sleep and working modes are set separately through programming to reduce the operating power consumption of each power-consuming module. In view of the situation where 4G, radio relay stations and other communication methods cannot be used in marine engineering, Beidou-3 short message communication is adopted and a data encoding program is developed to solve the problem of long-distance communication of marine monitoring data.

[0048] Specifically, considering that the full-section settlement monitoring device of the offshore dam project base requires stable power supply and communication, stable elevation calculation benchmark, and the impact of slip, pulling, squeezing, collision, corrosion, etc. on the monitoring device during the settlement of the underwater dam base, it is necessary to establish a relatively stable full-section automatic monitoring device for the marine dam base. However, most marine projects are open waters, and it is difficult to find a stable hydraulic structure as an attachment to build a collection platform. In addition, the full-section monitoring of the base mainly relies on the monitoring sensor chain (that is, the monitoring sensor group) formed by the interconnection of sensor components. In order to avoid the need to climb the slope when the sensor chain is connected to the water platform, resulting in a large suspended section, the possibility of subsequent damage is increased. By designing a mode in which the collection platform and the elevation calculation platform are separated, the water part of the collection platform is a water outlet structure, which is convenient for collecting solar energy, carrying communication modules, GNSS elevation monitoring modules, and data acquisition modules. The elevation calculation platform is an underwater structure with a U-shaped trough structure, which makes it easy for the sensor chain to be stably placed in the trough and not to slip out easily; the length of the trough structure is the lateral slippage allowed by the device, and the starting section of the sensor chain has not slipped out of the trough, that is, the elevation of the bottom surface of the trough can be considered as the starting point for monitoring the sensor chain elevation. In order to monitor the change in slippage and ensure that the sensor chain is reconnected before sliding out of the trough, the mode of cable gauge + wire rope + pulley is used to monitor the slippage of the sensor chain. The data acquisition module in the upper acquisition platform synchronously collects the slippage and sends it back to the shore through the Beidou third-generation communication module (also known as the communication module). According to this separate design of the above-water and underwater platforms, the sensor chain does not need to be directly connected to the upper part of the above-water acquisition platform, but only needs to be kept in the trough of the underwater elevation calculation platform.

[0049] The data processing device, such as the shore end, monitors the slippage and issues an alarm in time when the slippage is too large and is about to slide out of the trough of the elevation calculation platform, and the technical personnel plan the follow-up work in time. When low tide is selected on site, the first section of the sensor assembly is pulled up and the sensor assembly of the corresponding length is connected; with the help of low tide, the water outlet pipes on both sides of the trough are indicated, and the trough is lowered again, the wire rope is tightened again, and the cable gauge is reconnected for monitoring. Considering that the settlement process is usually slow, this method ensures that the sensor starting end is always in the trough; the tension of the cable gauge is set to more than 20 kilograms to ensure that small shaking will not produce slippage and cause slippage monitoring errors.

[0050] In order to prevent the equipment from drifting and deviating from the designed position during the lowering process due to ocean tides, currents, and wind and wave movements, and to prevent it from being displaced by water impact for a period of time after lowering, and considering the corrosiveness of the marine environment, 316 stainless steel with a relatively strong texture is used as the outer shell structure. The shorter stainless steel ruler chain has less deformation and is used as the hypotenuse when calculating the settlement in trigonometric height, so the settlement calculation is relatively accurate. After the sensor is lowered into the water, a protective cover design is used to avoid collisions with construction ships, anchor chains, and other water carriers to protect the sensor module to the greatest extent. The core MEMS sensor is encapsulated with 3M epoxy resin potting glue with high corrosion resistance to fundamentally solve the risk of corrosion of core circuits and components.

[0051] The two sides of the scale chain adopt a wing structure design, and the clip-shaped connecting parts of the wing are designed with left and right movable joints. The balance board head adopts a circular design and can rotate 45° left and right. When the sensor scale chain is pulled, it can reduce the sliding resistance and still maintain balance, so that the sensor will not flip over.

[0052] Sensor data, elevation data and wire gauge data are collected through the data acquisition module, and embedded programs are written to pre-process and re-encode all monitoring data, which are directly transmitted to the shore through the Beidou-3 short message communication method. The shore side analyzes, calculates and stores the data, and calculates the vertical settlement and horizontal displacement through the Pythagorean theorem to further realize release and early warning.

[0053] The above-mentioned embodiments of the present application aim at the problems of difficulty in maintaining the elevation starting point, strong corrosion, high risk of damage, poor pulling and squeezing stability, communication difficulties, and power supply difficulties in offshore dam projects. It provides a monitoring system that integrates a monitoring sensor group, a communication module, an elevation monitoring module, a data acquisition module, a wire gauge, etc., and realizes automatic data collection and transmission through the development of programs such as data collection, real-time re-editing, and format standardization; and realizes power consumption control through the development of power controllers and control programs. The embodiments of the present application have modular characteristics, which are convenient for processing, manufacturing, optimization and upgrading, and provide a new technical solution for full-section monitoring of offshore dam bases. The embodiments of the present application fill the gap in the technology of full-section settlement monitoring of the base of marine dams, and realize the automatic monitoring of full-section settlement of the base in special scenarios of offshore dam projects.

[0054] In several embodiments provided in the present application, the disclosed device can also be implemented in other ways. The device embodiments described above are merely schematic, for example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and a module, a program segment or a part of a code contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0055] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

Claims

1. A settlement monitoring system, characterized in that: The settlement monitoring system includes a settlement monitoring device, a data transmission device and a data processing device; The settlement monitoring device includes a monitoring sensor group, a communication module, an elevation monitoring module, a data acquisition module and a wire gauge; the monitoring sensor group is used to monitor sensor data and send the sensor data to the data acquisition module; the elevation monitoring module is used to monitor elevation data and send the elevation data to the data acquisition module; the wire gauge is used to monitor wire gauge data and send the wire gauge data to the data acquisition module; the data acquisition module is used to collect the sensor data, the elevation data and the wire gauge data, and send them to the communication module; the communication module is used to send the sensor data, the elevation data and the wire gauge data to the data transmission device; The data transmission device is used to transmit the sensor data, the elevation data and the wire gauge data to the data processing device; The data processing device is used to determine the settlement of the dam based on the sensor data, the elevation data and the wire gauge data.

2. The settlement monitoring system according to claim 1, characterized in that: The settlement monitoring device also includes a collection platform, an elevation calculation platform, a pulley and a pull rope; The collection platform includes an above-water platform, an intermediate support section and an underwater base; The communication module and the elevation monitoring module are installed on the top of the water platform, and the data acquisition module and the cable meter are installed inside the water platform; The elevation calculation platform is installed on the underwater base, and the monitoring sensor group is installed on the elevation calculation platform; The pulley comprises a first pulley and a second pulley, the first pulley is installed on the above-water platform, and the second pulley is installed on the elevation calculation platform; One end of the pull rope is connected to the pull rope meter, and the other end is connected to the monitoring sensor group through the first pulley and the second pulley, so that the monitoring sensor group can slide in the elevation calculation platform.

3. The settlement monitoring system according to claim 2, characterized in that: The above-water platform is a rectangular parallelepiped structure, the top of the above-water platform is a first installation platform, and the bottom of the above-water platform is a second installation platform; The underwater base comprises a third mounting platform and a plurality of column feet, one end of each of the plurality of column feet being connected to the third mounting platform; The second mounting platform is connected to the third mounting platform via the middle supporting section.

4. The settlement monitoring system according to claim 3, characterized in that: The communication module and the elevation monitoring module are installed on the top of the above-water platform, including: the communication module and the elevation monitoring module are installed on the first installation platform; The first pulley is installed on the above-water platform, comprising: the first pulley is installed on the edge of the second installation platform; The second installation platform is a solid structure; the data acquisition module and the cable gauge are installed inside the water platform, including: the data acquisition module is installed on the second installation platform, and the cable gauge is installed on the data acquisition module; The elevation calculation platform is installed on the underwater base, including: the elevation calculation platform is installed on the third installation platform.

5. The settlement monitoring system according to claim 2, characterized in that: The elevation calculation platform is a U-shaped groove structure, and a plurality of pipes are respectively connected to both sides of the elevation calculation platform in the opening direction of the U-shaped groove structure, and the second pulley is installed at one end of the elevation calculation platform.

6. The settlement monitoring system according to claim 2, characterized in that: The monitoring sensor group includes a plurality of sensor components, and the plurality of sensor components are connected head to tail to form a continuous ruler chain structure; The sensor assembly includes a micro-electromechanical system MEMS sensor module, a protective cover, side wings and a U-shaped bottom groove, wherein the MEMS sensor module is installed inside the U-shaped bottom groove, the protective cover is connected to the U-shaped bottom groove, and the side wings are installed outside the U-shaped bottom groove; The side wing comprises a clip-type connector and a balance plate, one end of the clip-type connector is connected to the outer side of the U-shaped bottom groove, and the other end is connected to the balance plate.

7. The settlement monitoring system according to claim 1, characterized in that: The data transmission device is used to transmit the sensor data, the elevation data and the wire gauge data to the data processing device, and includes: The data transmission device transmits the sensor data, the elevation data and the wire gauge data to the data processing device through the short message communication function of the Beidou-3 satellite system.

8. The settlement monitoring system according to claim 6, characterized in that: The sensor assembly is used to collect the offset angle of the sensor assembly in the vertical direction and the offset angle in the horizontal direction; The sensor data includes a length of each sensor component, an offset angle of each sensor component in a vertical direction, and an offset angle of each sensor component in a horizontal direction.

9. The settlement monitoring system according to claim 8, characterized in that: The data processing device is used to determine the settlement of the dam according to the sensor data, the elevation data and the wire gauge data, including: Determining the node coordinates of the first sensor assembly based on the elevation data and the wire gauge data; Determining the node coordinates of each sensor component based on the sensor data and the node coordinates of the first sensor component; The dam settlement is determined based on the node coordinates of each sensor component at different time points.

10. The settlement monitoring system according to claim 9, characterized in that: Determining the node coordinates of each sensor component according to the sensor data and the node coordinates of the first sensor component includes: Determine a vertical offset and a horizontal offset of each sensor assembly according to the length of each sensor assembly, an offset angle of each sensor assembly in a vertical direction, and an offset angle of each sensor assembly in a horizontal direction; The node coordinates of each sensor component are determined according to the node coordinates of the first sensor component and the vertical offset and the horizontal offset of each sensor component.

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