A slope radar monitoring system and method for micro-deformation monitoring

Abstract

The present invention relates to the field of distance measurement, and discloses a slope radar monitoring system and method for micro-deformation monitoring. The system is equipped with a radar transmitting module, a radar reflector, a signal processing module, a server, and an early warning module. The radar transmitting module transmits an electromagnetic wave signal, receives an echo signal reflected by a radar reflector, and obtains a difference frequency signal by mixing the echo signal; the signal processing module obtains the distance information between the radar transmitting module and the slope after analog-to-digital conversion of the difference frequency signal; the server compares the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed; the early warning module sends an early warning signal to the equipment end when the slope is deformed. In the present invention, the direction of the reflector is adjusted according to the slope angle of the slope at the actual installation position and the emission direction of the radar transmitting module, so that the reflective surface can be accurately controlled to be in the emission direction of the radar and can reflect electromagnetic waves, thereby ensuring smooth radar ranging.

Description

Technical Field

[0001] The present invention relates to the technical field of slope deformation monitoring, and in particular to a slope radar monitoring system and method for micro-deformation monitoring. Background Art

[0002] Through slope monitoring, the deformation data of the slope is measured, the dynamic change law of the slope is analyzed, and the possible damage to the slope project is predicted, providing a basis for disaster prevention and mitigation. Radar slope monitoring technology can be installed remotely and monitor slope deformation. Radar slope monitoring technology uses radar equipment to remotely scan the surface of the slope monitoring area to obtain high-precision displacement within the entire area.

[0003] The displacement obtained by radar slope monitoring is uploaded to the platform, and the monitoring personnel determine whether the displacement of the slope in the current period has the possibility of slope deformation and take disaster prevention measures. Slope deformation occurs occasionally. If the monitoring personnel do not know the displacement in time, they cannot take disaster prevention measures in time, which will cause disasters to harm the environment.

[0004] In addition, to improve the accuracy of radar monitoring, radar monitoring generally uses reflectors as reference objects for slopes, and uses the strong reflection signal of the reflector to calculate the displacement of the reflector, thereby obtaining the slope displacement. However, in actual operations, the slopes of different slopes are different, and the direction of the reflective surface of the reflector changes according to the different slope angles. This may cause the radar waves to pass through reflection surfaces in different directions and fail to accurately return to the radar monitor, thus limiting the slope displacement measurement process. Summary of the invention

[0005] To this end, the present invention provides a slope radar monitoring system and method for micro-deformation monitoring, which effectively solves the technical problems in the prior art that it is impossible to issue timely warnings and take disaster prevention measures, and it is impossible to ensure that the reflecting surface of the reflector is at an angle that accurately reflects radar microwaves, resulting in low accuracy in calculating the distance information of the slope.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a slope radar monitoring system for micro-deformation monitoring, comprising:

[0007] The radar transmitting module is used to send electromagnetic wave signals, receive echo signals reflected by radar reflectors, and obtain difference frequency signals by mixing the echo signals;

[0008] A radar reflector is installed on the surface of a slope, the radar reflector comprises a fixed frame, a telescopic frame, and a lifting frame, the fixed frame is fixed in the soil of the slope, a plurality of the telescopic frames are respectively installed at the corners of the fixed frame, the lifting frame can be lifted and installed at the center of the fixed frame, a plurality of reflective sheets as reflective media are installed between the telescopic frame and the lifting frame, the outer corners of the reflective sheets are movably installed at the top of the telescopic frame, and the inner corners of the reflective sheets are movably installed at the top of the lifting frame, and the direction of the reflective sheets is adjusted according to the slope angle of the slope by lifting and lowering the telescopic frame and / or the lifting frame, so that the adjusted reflective sheets can reflect echo signals back toward the radar transmitting module;

[0009] A signal processing module is connected to the radar transmitting module for communication. The signal processing module receives the difference frequency signal and obtains the distance information between the radar transmitting module and the slope after analog-to-digital conversion of the difference frequency signal.

[0010] A server is connected to the signal processing module for communication, and receives the distance information and compares the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed;

[0011] The early warning module is connected to the server for communication. The early warning module receives the deformation judgment result and sends an early warning signal to the equipment end in case of slope deformation.

[0012] Furthermore, a threaded column is fixedly mounted on the fixing frame;

[0013] The lifting frame includes a threaded sleeve threadedly mounted on the threaded column;

[0014] The outer wall of the threaded sleeve is provided with a ring groove, a ring seat is movably installed in the ring groove, and the end of the connecting frame is hingedly installed on the side of the ring seat.

[0015] Furthermore, a plurality of first welding rings are installed at the top of the threaded sleeve, and a first spring buckle is installed at the inner corner of the reflector, and is movably connected to the first welding ring through the first spring buckle;

[0016] A plurality of second welding rings are installed on the inner side wall of the telescopic frame, and a second spring buckle is installed on the outer corner of the reflector sheet, and is movably connected to the second welding ring through the second spring buckle.

[0017] Furthermore, a thrust spring is connected to the fixing frame, and the top end of the thrust spring is supported on the bottom of the threaded sleeve.

[0018] Furthermore, a mounting bolt is installed at the bottom of the fixing frame, and an expansion element is embedded in the mounting bolt. The expansion element is externally connected to a connecting frame, and is connected to the lifting frame through the connecting frame. When the lifting frame rises, it drives the expansion element to expand outward through the connecting frame.

[0019] A plurality of elastic sheets are installed in the circumferential direction of the bottom of the mounting bolt, and an axial groove is opened in the mounting bolt along the central axis;

[0020] The expansion element comprises an expansion shaft slidably mounted in the axial groove and an expansion cone column connected to the bottom end of the expansion shaft, wherein the top end outer diameter of the expansion cone column is smaller than the inner diameter of the elastic sheet, and the bottom end outer diameter thereof is larger than the inner diameter of the elastic sheet;

[0021] The expansion cone column can move inwardly of the elastic sheet along a vertical direction to support the elastic sheet outwardly.

[0022] Furthermore, a central groove is provided in the expansion shaft, and a lifting shaft is movably provided in the central groove, the top end of the lifting shaft is hinged to the end of the connecting frame, and a connecting spring is provided between the bottom end of the lifting shaft and the inside of the central groove;

[0023] A limiting arc plate is installed in the axial groove, and the inner diameter of the limiting arc plate is larger than the outer diameter of the expansion shaft.

[0024] Further, the threaded column is externally threaded with an adjusting screw sleeve, the adjusting screw sleeve is provided with at least two first threaded holes, the threaded sleeve is provided with a second threaded hole, the first threaded hole corresponds to the second threaded hole, and a positioning bolt is internally threaded with the first threaded hole;

[0025] The top of the threaded column is connected to a distance-adjusting stud, a limit screw sleeve is threadedly installed on the distance-adjusting stud, a buffer spring is installed at the bottom of the limit screw sleeve, a movable ring is connected to the bottom of the buffer spring, an annular groove is opened at the top of the adjusting screw sleeve, and the movable ring is movably installed in the annular groove;

[0026] A ball is installed between the movable ring and the annular groove.

[0027] Furthermore, a vertical groove is formed on the outer wall of the threaded sleeve, and a telescopic shaft is hinged in the vertical groove;

[0028] The outer wall of the limiting screw sleeve is provided with at least two vertically arranged synchronous grooves, and the synchronous grooves can be used for placing the telescopic shaft rod;

[0029] The outer wall of the adjusting screw sleeve is provided with a through groove for the telescopic shaft rod to pass through;

[0030] Wherein, the diameter of the telescopic shaft is smaller than the width of the synchronous groove and the vertical groove, and the diameter of the top rod section of the telescopic shaft is equal to the inner width of the synchronous groove.

[0031] Further, the pitch of the thread groove on the pitch-adjusting stud is twice the pitch of the thread groove on the threaded column;

[0032] A limiting sleeve is installed on the top end of the distance adjusting stud.

[0033] In order to solve the above technical problems, the present invention further provides the following technical solutions: a monitoring and early warning method for slope micro-deformation, comprising the following steps:

[0034] Install the radar reflector on the slope, and adjust the reflection direction of the reflector according to the slope so that the reflector can reflect the echo signal to the position of the radar transmitting module;

[0035] The radar transmitting module sends electromagnetic wave signals, which are reflected by the radar reflector to obtain echo signals;

[0036] The echo signal is processed by mixing and analog-to-digital conversion to obtain the distance information between the radar transmitting module and the slope;

[0037] Compare the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed;

[0038] When the slope deforms, an early warning signal is sent to the equipment end.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The monitoring and early warning system provided by the present invention can calculate the real-time slope distance information according to the echo signal, judge whether the slope is deformed by comparing the slope distance information, and send an early warning signal to the equipment end in time when the slope is deformed, so as to take disaster prevention measures in time, thereby realizing the slope monitoring and early warning at all times;

[0041] Furthermore, by adding a liftable telescopic frame and a lifting frame to adjust the direction of the reflector, the direction of the reflector is adjusted according to the slope angle of the slope at the actual installation position and the emission direction of the radar transmitting module. The reflective surface can be accurately controlled to be in the emission direction of the radar and can reflect electromagnetic waves back to the radar transmitting module to ensure smooth radar ranging. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0043] Figure 1 Schematic diagram of the structure of a radar transmitting module and a radar reflector in an embodiment of the present invention;

[0044] Figure 2 is a schematic structural diagram of a radar reflector in an embodiment of the present invention;

[0045] Figure 3 It is a schematic structural diagram of a radar reflector from a lower right perspective in an embodiment of the present invention;

[0046] Figure 4 is a schematic diagram of the front view structure of a radar reflector in an embodiment of the present invention;

[0047] Figure 5 It is a schematic diagram of the structure of the fixing frame, the threaded column and the lifting frame in the embodiment of the present invention;

[0048] Figure 6 It is a structural schematic diagram of a threaded column, a lifting frame, a limiting screw sleeve, and an adjusting screw sleeve in an embodiment of the present invention;

[0049] Figure 7 is a schematic diagram of a top view of the structure of a radar reflector in an embodiment of the present invention;

[0050] Figure 8 for Figure 7 Schematic diagram of the structure in the middle AA direction;

[0051] Fig. 9 for Figure 8 A is a schematic diagram of the enlarged structure of the middle part;

[0052] Fig.10 It is a schematic diagram of the structure of the meshing of the thread lines between the threaded sleeve and the threaded column in the embodiment of the present invention;

[0053] Fig.11 A structural block diagram of a slope radar monitoring system for micro-deformation monitoring provided by an embodiment of the present invention.

[0054] The numbers in the figure represent the following:

[0055] 1-fixed frame; 2-telescopic frame; 3-lifting frame; 4-expansion element; 5-radar transmitting module; 6-mounting bolt; 7-reflector; 8-connecting frame; 9-threaded column; 10-first welding ring; 11-first spring buckle; 12-second welding ring; 13-second spring buckle; 14-thrust spring; 15-elastic sheet; 16-axial groove; 17-adjusting screw sleeve; 18-first threaded hole; 19-second threaded hole; 20-positioning bolt; 21-adjusting stud; 22-limiting screw sleeve; 23-buffer spring; 24-movable ring; 25-annular groove; 26-vertical groove; 27-telescopic shaft; 28-synchronous groove; 29-through groove; 30-limiting sleeve; 31-arc seat;

[0056] 301-threaded sleeve; 302-ring groove; 303-ring seat;

[0057] 401- expansion shaft; 402- expansion cone column; 403- center groove; 404- lifting shaft; 405- connecting spring; 406- limiting arc plate. DETAILED DESCRIPTION

[0058] 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.

[0059] like Fig.11 As shown, the present invention provides a slope radar monitoring system for micro-deformation monitoring, including a radar transmitting module 5, a radar reflector, a signal processing module, and a server.

[0060] The radar transmitting module 5 is used to send electromagnetic wave signals, receive echo signals reflected by radar reflectors, and obtain difference frequency signals by mixing the echo signals.

[0061] The radar reflector is installed on the slope surface. The radar reflector can adjust the angle of its own reflective medium according to the slope angle of the installation position, so as to reflect the echo signal to the position of the radar transmitting module 5 after receiving the electromagnetic wave signal.

[0062] The signal processing module is connected to the radar transmitting module 5 for communication. The signal processing module receives the difference frequency signal and obtains the distance information between the radar transmitting module 5 and the slope after analog-to-digital conversion of the difference frequency signal.

[0063] The server is connected to the signal processing module in communication, and the server receives the distance information and compares the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed.

[0064] The early warning module is connected to the server for communication. The early warning module receives the deformation judgment result and sends an early warning signal to the equipment end in case of slope deformation.

[0065] The specific signal transmission and data processing process of each of the above modules is as follows: the radar transmitting module 5 sends an electromagnetic wave signal, receives the echo signal reflected by the radar reflector, and the echo signal is mixed to output a difference frequency signal containing distance information. After the difference frequency signal is processed by analog-to-digital conversion, a complex fast Fourier transform is performed to convert the difference frequency signal from a time domain signal into a frequency domain spectrum line. The distance information between the radar transmitting module 5 and the slope is obtained according to the frequency domain spectrum line, and is transmitted to the early warning module through the data transmission module. The distance information is compared with the initial distance information of the slope. When the distance information changes, a warning signal is sent to the device end, and the historical slope distance information is stored.

[0066] Based on the above process, if the comparison result between the initial distance information of the slope and the distance information obtained in real time is inconsistent or the difference exceeds a certain threshold, an early warning will be triggered.

[0067] The radar reflector of the present invention comprises a fixing frame 1, a telescopic frame 2, a lifting frame 3, an expansion element 4 and the like.

[0068] A mounting bolt 6 is installed at the bottom of the fixing frame 1 and is positioned in the slope soil through the mounting bolt 6 .

[0069] The telescopic frames 2 are respectively installed at the corners of the fixed frame 1. A plurality of reflective sheets 7 are installed on the inner side of the top of the telescopic frame 2. The reflective sheets 7 serve as reflective media, and their surfaces are coated with radar reflective materials, which can reflect electromagnetic wave signals.

[0070] The reflector sheet 7 is a quadrilateral or triangular body, and its two outer corners are respectively installed on the top of the adjacent telescopic frame 2. The lifting frame 3 can be lifted and installed above the center of the fixed frame 1, and the inner corner of the reflector sheet 7 is installed on the top of the lifting frame 3.

[0071] In order to provide space for the reflection sheet 7 to move up and down to avoid being restricted, a certain gap may be provided between adjacent reflection sheets 7 .

[0072] The telescopic frame 2 can move up and down in the vertical direction, and the lifting frame 3 can move up and down in the vertical direction. The lifting and lowering adjustment of the telescopic frame 2 and the lifting frame 3 drives the adjustment of the overall angle of the multiple reflective sheets 7 to adjust the direction of the reflective sheets according to the slope angle of the slope. In other words, the angle of the reflective sheet 7 relative to the radar transmitting module 5 is adjusted by lifting and lowering the telescopic frame 2 and the lifting frame 3.

[0073] The expansion element 4 is embedded in the installation bolt 6, and the expansion element 4 is externally connected to the connecting frame 8, and is connected to the lifting frame 3 through the connecting frame 8. The lifting frame 3 rises and drives the expansion element 4 to expand outward through the connecting frame 8 to expand the lateral positioning area and enhance the positioning effect.

[0074] In the present invention, the telescopic frame 2 and the lifting frame 3 are raised and lowered to drive the angles of the multiple reflective sheets 7 to change, thereby adjusting the angles of the reflective sheets 7. The directions of the reflective sheets 7 are adjusted according to the slope angle of the slope at the actual installation position and the emission direction of the radar transmitting module 5. The reflecting surface of the reflective sheet 7 can be accurately controlled to be in the emission direction of the radar transmitting module 5 and to reflect electromagnetic waves, thereby avoiding the situation where the reflected signal deviates from the direction of the radar transmitting module 5, and improving the measurement accuracy of the distance information.

[0075] In addition, the entire structure is installed on the slope through the mounting bolts 6, and the lifting frame 3 rises to drive the expansion element 4 to expand outward through the connecting frame 8, further ensuring the positioning effect of the structure on the slope, avoiding the relative displacement between the structure and the slope that causes data errors, and improving data accuracy.

[0076] In order to realize the lifting of the lifting frame 3, the present invention makes the following designs: Figure 5 As shown, a threaded column 9 is fixedly mounted on the fixing frame 1 , and the lifting frame 3 includes a threaded sleeve 301 threadedly mounted on the threaded column 9 .

[0077] By manually turning the threaded sleeve 301 to rotate, the rotation on the threaded column 9 can drive the threaded sleeve 301 to gradually rise or fall, thereby driving the inner corner of the reflective sheet 7 to move up or down accordingly.

[0078] Among them, Figure 5 and Figure 6 As shown, the outer wall of the threaded sleeve 301 is provided with a ring groove 302 , a ring seat 303 is movably installed in the ring groove 302 , and the end of the connecting frame 8 is hingedly installed on the side of the ring seat 303 .

[0079] During the rotation of the threaded sleeve 301, the ring seat 303 will not rotate along with the threaded sleeve 301 under the traction of the connecting frame 8, that is, the ring seat 303 rises and falls along with the threaded sleeve 301 but will not rotate along with the threaded sleeve 301, and during the lifting process, a relative rotational motion occurs between the ring seat 303 and the threaded sleeve 301.

[0080] In addition, during the rotation of the threaded sleeve 301, the reflective sheet 7 will also be involved in the threaded sleeve 301. In order to prevent the threaded sleeve 301 from driving the reflective sheet 7 to rotate and causing the inner corner of the reflective sheet 7 to rotate and cause confusion, the present invention also has a circle of arc seat 31 installed on the upper surface of the threaded sleeve 301 that rotates around a circular ring. The inner corner of the reflective sheet 7 is installed on the arc seat 31. Similarly, during the rotation of the threaded sleeve 301, the arc seat 31 only follows the threaded sleeve 301 to rise and fall, and does not rotate with the threaded sleeve 301. That is to say, during the spiral motion of the threaded sleeve 301, the arc seat 31 drives the inner corner of the reflective sheet 7 to rise and fall.

[0081] In order to fix the inner and outer corners of the reflector 7, the present invention also makes the following design: Figure 2 and Figure 3 As shown, a plurality of first welding rings 10 are installed on the top of the threaded sleeve 301, a first spring buckle 11 is installed on the inner corner of the reflector 7, and is movably connected to the first welding ring 10 through the first spring buckle 11, a plurality of second welding rings 12 are installed on the inner side wall of the telescopic frame 2, a second spring buckle 13 is installed on the outer corner of the reflector 7, and is movably connected to the second welding ring 12 through the second spring buckle 13.

[0082] The first spring buckle 11 and the second spring buckle 13 are designed to reserve a certain buffer distance when the lifting directions of the inner and outer corners of the reflective sheet 7 are different. For example, during the lifting and adjusting process, the reflective sheet 7 gradually tends from an inclined state to a horizontal state, and the area occupied in the horizontal direction increases. Then, the edge of the reflective sheet 7 is closer to the lifting frame 3 and the telescopic frame 2 than in the inclined state. The design of the first spring buckle 11 and the second spring buckle 13 can prevent the reflective sheet 7 from interfering with the lifting frame 3 and the telescopic frame 2 during the movement.

[0083] In order to prevent the threaded sleeve 301 from rotating slightly due to environmental factors, which may cause the reflector 7 to move, the present invention also makes the following design: Figure 5 As shown, a thrust spring 14 is connected to the fixing frame 1 , and the top end of the thrust spring 14 is supported on the bottom of the threaded sleeve 301 .

[0084] Under the action of the thrust spring 14, the internal thread in the threaded sleeve 301 is pressed upward against the external thread of the threaded column 9. Fig.10As shown, assuming that in the initial state, the internal thread line in the threaded sleeve 301 contacts the external thread lines a and b of the adjacent threaded column 9 in the upper and lower directions respectively, under the action of the thrust spring 14, the internal thread line in the threaded sleeve 301 is closer to the external thread line a of the adjacent threaded column 9 and away from the external thread line b, which increases the friction resistance between the thread lines. The threaded sleeve 301 is subjected to greater resistance when relative rotation occurs, thereby further ensuring the stability of the threaded sleeve 301.

[0085] In order to achieve that the threaded sleeve 301 can drive the installation bolt 6 to be more firmly fixed in the slope when it rises, the present invention also makes the following design, such as Figure 7 and Figure 8 , Fig. 9 As shown, a plurality of elastic sheets 15 are installed in the circumferential direction of the bottom of the installation bolt 6, and an axial groove 16 is opened in the installation bolt 6 along the central axis.

[0086] The expansion element 4 includes an expansion shaft 401 slidably installed in the axial groove 16 and an expansion cone column 402 connected to the bottom end of the expansion shaft 401. The top outer diameter of the expansion cone column 402 is smaller than the inner diameter of the elastic sheet 15, and the bottom outer diameter is larger than the inner diameter of the elastic sheet 15.

[0087] A center groove 403 is opened in the expansion shaft 401, and a lifting shaft 404 is movably arranged in the center groove 403. The top end of the lifting shaft 404 is hinged to the end of the connecting frame 8, and a connecting spring 405 is arranged between the bottom end of the lifting shaft 404 and the inside of the center groove 403. A limiting arc plate 406 is installed in the axial groove 16, and the inner diameter of the limiting arc plate 406 is larger than the outer diameter of the expansion shaft 401.

[0088] During the process of the threaded sleeve 301 rising, the ring seat 303 is driven to rise, thereby driving the lifting shaft 404 to rise through the connecting frame 8. The rising of the lifting shaft 404 can drive the expansion shaft 401 to rise through the connecting spring 405, and drive the expansion cone column 402 to rise to the inside of the elastic sheet 15. Since the bottom size of the expansion cone column 402 is relatively large, during the process of the expansion cone column 402 rising to the inside of the elastic sheet 15, the elastic sheet 15 is gradually pushed outward, so that the elastic sheet 15 expands outward to a radius greater than the initial radius.

[0089] In the actual positioning process, an opening should be made at the corresponding position on the slope so that the mounting bolt 6 is opposite to the hole and inserted into the hole. Then, during the process of the elastic sheet 15 expanding outward, the elastic sheet 15 at the bottom of the mounting bolt is gradually positioned in the hole, further achieving the fixing effect.

[0090] In the above embodiment, a spring connection is set between the lifting shaft 404 and the expansion shaft 401, and a limiting arc plate 406 is installed in the axial groove 16 in order to limit the expansion shaft 401. When the expansion cone column 402 drives the elastic sheet 15 to expand outward to a certain radius, the expansion shaft 401 just rises to the limiting arc plate 406. The limiting arc plate 406 prevents the expansion shaft 401 from continuing to rise. Afterwards, assuming that the lifting shaft 404 continues to rise following the connecting frame 8, the connecting spring 405 is gradually stretched. The above design is to prevent the lifting shaft 404 from rising and directly driving the expansion cone column 402 to leave the height area of ​​the elastic sheet 15, resulting in failure of expansion positioning. On the other hand, it is also to prevent the expansion cone column 402 from preventing the lifting shaft 404, the connecting frame 8 and the threaded sleeve 301 from continuing to rise and adjust.

[0091] In actual application, if the threaded sleeve 301 is manually moved directly, the friction resistance between the thread lines described above will make the adjustment process more difficult. To avoid the above situation, the present invention makes the following design: Figure 5 and Figure 6 As shown, the threaded column 9 is externally threaded with an adjusting screw sleeve 17, and the adjusting screw sleeve 17 is provided with at least two first threaded holes 18. The threaded sleeve 301 is provided with a second threaded hole 19, and the first threaded hole 18 corresponds to the second threaded hole 19. The first threaded hole 18 is internally threaded with a positioning bolt 20.

[0092] The top of the threaded column 9 is connected to a distance adjusting stud 21, a limit screw sleeve 22 is threadedly installed on the distance adjusting stud 21, a buffer spring 23 is installed at the bottom of the limit screw sleeve 22, a movable ring 24 is connected to the bottom of the buffer spring 23, an annular groove 25 is opened at the top of the adjusting screw sleeve 17, and the movable ring 24 is movably installed in the annular groove 25;

[0093] Balls are installed between the movable ring 24 and the annular groove 25 .

[0094] A vertical groove 26 is formed on the outer wall of the threaded sleeve 301, and a telescopic shaft 27 is hinged in the vertical groove 26;

[0095] The outer wall of the limiting screw sleeve 22 is provided with at least two vertically arranged synchronous grooves 28, and the synchronous grooves 28 can be used to place the telescopic shaft rod 27;

[0096] The outer wall of the adjusting screw sleeve 17 is provided with a through slot 29 for the telescopic shaft rod 27 to pass through;

[0097] The diameter of the telescopic shaft rod 27 is smaller than the width of the synchronous groove 28 and the vertical groove 26 , and the diameter of the top rod section of the telescopic shaft rod 27 is equal to the inner width of the synchronous groove 28 .

[0098] In the above embodiments, the adjusting screw sleeve 17 is an auxiliary component specially used for adjusting the threaded sleeve 301. From the cross section, the adjusting screw sleeve 17 is an I-shaped sleeve. When the threaded sleeve 301 needs to be threadedly adjusted, the adjusting screw sleeve 17 is rotated so that a certain distance is maintained between the adjusting screw sleeve 17 and the threaded sleeve 301, and the positioning bolt 20 is turned so that the positioning bolt 20 is fixed in the second threaded hole 19 and the first threaded hole 18, thereby realizing the connection between the adjusting screw sleeve 17 and the threaded sleeve 301. After the adjusting screw sleeve 17 and the threaded sleeve 301 are connected, the adjusting screw sleeve 17 and the threaded sleeve 301 can be regarded as a whole structure that can perform a spiral action. The bottom of the spiral structure is acted upon by the thrust of the thrust spring 14, so that its internal internal thread line approaches the external thread line of the threaded column 9 upward (the approach here refers to the increase in the pressure of the internal thread line on the external thread line a, thereby increasing the friction resistance therebetween). In addition, the top of the spiral structure is also acted upon by the elastic force of the buffer spring 23, so that the overall force of the spiral structure is offset up and down, and its internal internal thread line neither approaches the external thread line a upward, nor approaches the external thread line b upward, but is only in contact with the upper and lower external thread lines or has a certain gap. In this case, rotating and moving the entire spiral structure will no longer be subject to great friction resistance, thereby reducing the difficulty of operation.

[0099] In order to make the forces of the thrust spring 14 and the buffer spring 23 offset each other, it is necessary to set the specifications of the thrust spring 14 and the buffer spring 23 to be completely consistent, and after the initial adjustment screw sleeve 17 and the threaded sleeve 301 are connected, the stretching lengths of the thrust spring 14 and the buffer spring 23 remain consistent, thereby ensuring that the forces of the thrust spring 14 and the buffer spring 23 in the initial state can offset each other.

[0100] In addition, the present invention further has the following design: the pitch of the thread groove on the pitch-adjusting stud 21 is twice the pitch of the thread groove on the threaded column 9 .

[0101] After the adjusting screw sleeve 17 and the threaded sleeve 301 are connected to form a whole spiral structure, the top end of the telescopic shaft 27 extends to a position above the synchronous groove 28, thereby the telescopic shaft 27 can synchronously drive the limit screw sleeve 22 to rotate on the pitch adjusting stud 21. Since the pitch of the thread groove on the pitch adjusting stud 21 is twice the pitch of the thread groove on the threaded column 9, if the telescopic shaft 27 rotates a° following the threaded sleeve 301, the corresponding rising height is h1, then the limit screw sleeve 22 is driven to rotate a°, and the corresponding rising height is 2h2.

[0102] Assuming that in the initial state, the length of the thrust spring 14 is h and it is in a compressed state, the length of the buffer spring 23 is h and it is in a compressed state, the distance between the limit screw sleeve 22 and the adjusting screw sleeve 17 is h, and after the threaded sleeve 301 rotates a°, the entire spiral structure rises h1, the adjusting screw sleeve 17 rises h1, and the limit screw sleeve 22 rotates a°, and the corresponding rising height is 2h2. During this process, the thrust spring 14 is adjusted to h+h1, and the buffer spring 23 is also adjusted to h+h1. That is to say, during the spiral adjustment action of the spiral structure, the thrust spring 14 can always maintain the same size as the buffer spring 23, thereby ensuring that the forces exerted on the spiral structure by the thrust spring 14 and the buffer spring 23 are of the same magnitude and opposite direction, and offset each other, thereby achieving partial offsetting of the forces during the entire spiral adjustment process, thereby reducing the difficulty of spiral adjustment of the spiral structure.

[0103] Among them, after the spiral adjustment for a distance, the bottom of the lifting shaft 404 at one end of the connecting frame 8 may be pulled by the connecting spring 405, making it impossible to completely achieve force offset in the entire adjustment process. However, in actual operation, most of the time, the telescopic adjustment of the external telescopic frame 2 drives the angle adjustment of the reflector 7, and the internal lifting frame 3 is a small-amplitude adjustment, usually a small-amplitude adjustment. During the adjustment process, achieving partial force offset can easily achieve the goal of moving the threaded sleeve.

[0104] In the present invention, when no adjustment is required, the adjusting screw sleeve 17 is away from the threaded sleeve 301 , and when adjustment is required, the adjusting screw sleeve 17 is close to the threaded sleeve 301 and connected to form a spiral structure for adjustment.

[0105] In addition, before starting to adjust the threaded sleeve 301, it is not only necessary to adjust the position of the adjusting screw sleeve 17 to be close to the threaded sleeve 301 (the first threaded hole 18 and the second threaded hole 19 need to be opposite to each other, so as to establish a connection between the threaded sleeve 301 and the adjusting screw sleeve 17), but also necessary to adjust the distance between the adjusting screw sleeve 17 and the limiting screw sleeve 22 to adjust the degree of extrusion of the buffer spring 23. In this process, it is necessary to rotate the adjusting screw sleeve 17 and the limiting screw sleeve 22, and relative rotation is inevitable between the adjusting screw sleeve 17 and the limiting screw sleeve 22. In addition, after the threaded sleeve 301 and the adjusting screw sleeve 17 are connected into a whole spiral structure, they both need to be rotated, and the spiral structure also rotates relative to the limiting screw sleeve 22. In order to reduce the resistance generated during the relative rotation, balls are installed between the movable ring 24 and the annular groove 25 to reduce the friction generated by the relative activity.

[0106] In addition, during the rotation of the threaded sleeve 301, relative friction will also be generated between the top of the thrust spring 14 and the threaded sleeve 301. In order to reduce the friction, a movable ring can be set at the top of the thrust spring 14, and an annular groove 25 can be set at the bottom of the threaded sleeve 301. The movable ring can move freely in the annular groove 25, and a ball is additionally set between the annular groove and the movable ring to reduce the friction generated during the relative sliding process.

[0107] As another embodiment of the present invention, the compression length of the buffer spring 23 in the initial state can be made greater than the length of the thrust spring 14, so that the force generated by the buffer spring 23 can always be smaller than the force generated by the thrust spring 14, and the entire spiral structure is subjected to an upward force of the thrust spring 14, and a downward force of the buffer spring 23 and the connecting spring 405 at the bottom of the connecting frame 8, thereby enabling the thrust spring 14 to offset at least part of the force generated at the bottom of the connecting frame 8.

[0108] like Figure 5 As shown, in the present invention, a limiting sleeve 30 is installed at the top end of the distance adjusting stud 21.

[0109] In actual application, the greater the slope, the greater the angle of the reflector. However, when the slope reaches a certain level, the angle cannot be increased any further and is adjusted in the opposite direction so that the inner side of the reflector 7 reflects electromagnetic waves.

[0110] The present invention also provides a monitoring method of a slope radar monitoring system for micro-deformation monitoring, which specifically comprises the following steps:

[0111] The radar reflector is installed on the slope, and the reflection direction of the reflector 7 is adjusted according to the slope of the slope, so that the reflector 7 can reflect the echo signal to the position of the radar transmitting module 5;

[0112] The radar transmitting module 5 sends an electromagnetic wave signal, which is reflected by the radar reflector to obtain an echo signal;

[0113] The echo signal is processed by mixing and analog-to-digital conversion to obtain the distance information between the radar transmitting module and the slope;

[0114] Compare the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed;

[0115] When the distance information changes, a warning signal is sent to the device.

[0116] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A slope radar monitoring system for micro-deformation monitoring, characterized in that: have: A radar transmitting module (5) is used to send electromagnetic wave signals, receive echo signals reflected by a radar reflector, and obtain a difference frequency signal by mixing the echo signals; A radar reflector is installed on a slope surface, the radar reflector comprising a fixed frame (1), a telescopic frame (2), and a lifting frame (3), the fixed frame (1) being fixed in the soil of the slope, a plurality of the telescopic frames (2) being respectively installed at the corners of the fixed frame (1), the lifting frame (3) being movably installed at the center of the fixed frame (1), a plurality of reflective sheets (7) serving as a reflective medium being installed between the telescopic frame (2) and the lifting frame (3), the outer corners of the reflective sheets (7) being movably installed at the top of the telescopic frame (2), and the inner corners of the reflective sheets (7) being movably installed at the top of the lifting frame (3), and the direction of the reflective sheets (7) being adjusted according to the slope angle of the slope by lifting and lowering the telescopic frame (2) and / or the lifting frame (3), so that the adjusted reflective sheets (7) can reflect echo signals back toward the radar transmitting module (5); a signal processing module, which is in communication connection with the radar transmitting module (5), the signal processing module receiving the difference frequency signal, and obtaining distance information between the radar transmitting module (5) and the slope after performing analog-to-digital conversion on the difference frequency signal; A server is connected to the signal processing module for communication, and receives the distance information and compares the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed; An early warning module is connected to the server for communication, and receives the deformation judgment result and sends an early warning signal to the equipment end in case of slope deformation; A threaded column (9) is fixedly mounted on the fixing frame (1); The lifting frame (3) comprises a threaded sleeve (301) threadedly mounted on the threaded column (9); The outer wall of the threaded sleeve (301) is provided with an annular groove (302), and a ring seat (303) is movably installed in the annular groove (302); A mounting bolt (6) is installed at the bottom of the fixing frame (1), an expansion element (4) is embedded in the mounting bolt (6), the expansion element (4) is externally connected to a connecting frame (8), and is connected to the lifting frame (3) via the connecting frame (8), the lifting frame (3) rises to drive the expansion element (4) to expand outwards via the connecting frame (8), and the end of the connecting frame (8) is hingedly installed on the side of the ring seat (303); By manually turning the threaded sleeve (301) to rotate, the rotation on the threaded column (9) can drive the threaded sleeve (301) to gradually rise or fall, thereby driving the inner corner of the reflective sheet (7) to move up or down accordingly.

2. The slope radar monitoring system for micro-deformation monitoring according to claim 1 is characterized in that: A plurality of first welding rings (10) are installed at the top end of the threaded sleeve (301), and a first spring buckle (11) is installed at the inner corner of the reflector sheet (7), and is movably connected to the first welding ring (10) via the first spring buckle (11); A plurality of second welding rings (12) are installed on the inner side wall of the telescopic frame (2), and a second spring buckle (13) is installed on the outer corner of the reflector sheet (7), and is movably connected to the second welding ring (12) via the second spring buckle (13).

3. The slope radar monitoring system for micro-deformation monitoring according to claim 1 is characterized in that: The fixing frame (1) is connected to a thrust spring (14), and the top end of the thrust spring (14) is supported on the bottom end of the threaded sleeve (301).

4. The slope radar monitoring system for micro-deformation monitoring according to claim 1 is characterized in that: A plurality of elastic sheets (15) are installed in the circumferential direction of the bottom of the mounting bolt (6), and an axial groove (16) is provided inside the mounting bolt (6) along the central axis; The expansion element (4) comprises an expansion shaft (401) slidably mounted in the axial groove (16) and an expansion cone column (402) connected to the bottom end of the expansion shaft (401), wherein the top end outer diameter of the expansion cone column (402) is smaller than the inner diameter of the elastic sheet (15), and the bottom end outer diameter thereof is larger than the inner diameter of the elastic sheet (15); The expansion cone column (402) can move inwardly of the elastic sheet (15) along a vertical direction to support the elastic sheet (15) outwardly.

5. The slope radar monitoring system for micro-deformation monitoring according to claim 4 is characterized in that: A central groove (403) is provided in the expansion shaft (401), and a lifting shaft (404) is movably provided in the central groove (403); the top end of the lifting shaft (404) is hinged to the end of the connecting frame (8), and a connecting spring (405) is provided between the bottom end of the lifting shaft (404) and the inside of the central groove (403); A limiting arc plate (406) is installed in the axial groove (16), and the inner diameter of the limiting arc plate (406) is larger than the outer diameter of the expansion shaft (401).

6. The slope radar monitoring system for micro-deformation monitoring according to claim 3 is characterized in that: The threaded column (9) is externally threaded with an adjusting screw sleeve (17), the adjusting screw sleeve (17) is provided with at least two first threaded holes (18), the threaded sleeve (301) is provided with a second threaded hole (19), the first threaded hole (18) corresponds to the second threaded hole (19), and the first threaded hole (18) is internally threaded with a positioning bolt (20); The top of the threaded column (9) is connected to a distance-adjusting stud (21), a limit screw sleeve (22) is threadedly mounted on the distance-adjusting stud (21), a buffer spring (23) is mounted at the bottom of the limit screw sleeve (22), a movable ring (24) is connected to the bottom of the buffer spring (23), an annular groove (25) is formed at the top of the adjusting screw sleeve (17), and the movable ring (24) is movably mounted in the annular groove (25); A ball is installed between the movable ring (24) and the annular groove (25).

7. The slope radar monitoring system for micro-deformation monitoring according to claim 6 is characterized in that: The outer wall of the threaded sleeve (301) is provided with a vertical groove (26), and a telescopic shaft (27) is hinged in the vertical groove (26); The outer wall of the limiting screw sleeve (22) is provided with at least two vertically arranged synchronous grooves (28), wherein the synchronous grooves (28) can accommodate the telescopic shaft rod (27); The outer wall of the adjusting screw sleeve (17) is provided with a through slot (29) for the telescopic shaft rod (27) to pass through; The diameter of the telescopic shaft rod (27) is smaller than the width of the synchronous groove (28) and the vertical groove (26), and the diameter of the top rod section of the telescopic shaft rod (27) is equal to the inner width of the synchronous groove (28).

8. The slope radar monitoring system for micro-deformation monitoring according to claim 7 is characterized in that: The pitch of the thread groove on the pitch-adjusting stud (21) is twice the pitch of the thread groove on the threaded column (9); A limiting sleeve (30) is installed at the top end of the distance adjusting stud (21).

9. A monitoring and early warning method of a slope radar monitoring system for micro-deformation monitoring according to any one of claims 1 to 8, characterized in that: The following steps are involved: The radar reflector is installed on the slope, and the reflection direction of the reflective sheet (7) is adjusted according to the slope of the slope, so that the reflective sheet (7) can reflect the echo signal to the position of the radar transmitting module (5); The radar transmitting module (5) sends an electromagnetic wave signal, which is reflected by the radar reflector to obtain an echo signal; The echo signal is subjected to frequency mixing and analog-to-digital conversion to obtain distance information between the radar transmitting module (5) and the slope; Compare the initial distance information of the slope with the distance information obtained in real time to determine whether the slope is deformed; When the slope deforms, an early warning signal is sent to the equipment end.

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