A dam deformation monitoring device based on interferometric synthetic aperture radar technology

Abstract

The application discloses a kind of dam deformation monitoring devices based on interferometric synthetic aperture radar technology, it is related to geotechnical test technical field, first by monitoring adjusting component, signal wave receiving concave plate cooperation synthetic aperture radar is carried out imaging angle adjustment, it is convenient for the wave band of synthetic aperture radar to be made to be under the receiving reflection of signal wave receiving concave plate, form multi-angle and multi-wide area detection wave operation, second, under the action of PLC controller and wave frequency modulation device, modulate synthetic aperture radar wave frequency, form low frequency-high frequency-low frequency discontinuity monitoring, for dam body inside multilayer accumulation monitoring feedback operation, improve the accuracy of dam body inside deformation monitoring, third, combined with synthetic aperture radar and wave direction imager, the deformation degree data change in dam body inside is reconstructed to three-dimensional image picture, realize dam real-time monitoring target.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil mechanics test, in particular to a dam deformation monitoring device based on interferometric synthetic aperture radar technology. BACKGROUND

[0002] In dam danger, dam seepage damage accounts for the first of various dangers, but the material used in conventional indoor dam test is not transparent, and the traditional test method can only get the seepage condition of the surface of the soil body, and it is difficult to obtain the seepage condition of the internal soil body. For this reason, domestic and foreign scholars have carried out a lot of research and put forward many solutions, but these solutions often arrange sensors in the dam body, which will interfere with the test results, and the high cost of the test also limits the wide application of these methods. The interferometric synthetic aperture radar (InSAR) is a radar technology applied to surveying and mapping and remote sensing. It is a technology that uses synthetic aperture radar to observe two complex-valued image data of the same area to obtain the surface elevation information.

[0003] However, when monitoring the deformation of the dam by traditional digital image acquisition and processing technology, there are certain limitations in obtaining the dam seepage field and stress field; single image may lead to failure of three-dimensional reconstruction and reduction of deformation monitoring precision without database as prior knowledge to constrain the model, so a dam deformation monitoring device based on interferometric synthetic aperture radar technology is needed. SUMMARY

[0004] The purpose of the present application is to provide a dam deformation monitoring device based on interferometric synthetic aperture radar technology to solve the limitations of the above-mentioned technology in obtaining the dam seepage field and stress field, i.e. weak constraints of single image on the model without database as prior knowledge, which may lead to failure of three-dimensional reconstruction and reduction of deformation monitoring precision.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a dam deformation monitoring device based on interferometric synthetic aperture radar technology, comprising a dam body, a stable frame is tightly installed on the outer wall surface of the dam body, the stable frame is provided as four groups, the side end of each group of the stable frame is tightly connected with a positioning plate, and a monitoring and adjusting assembly is installed on the upper and lower ends of the positioning plate;

[0006] The monitoring adjusting assembly comprises a bogie which is fixed and installed in an opposite and height-difference manner on both sides of the positioning plate, an inner installation of the bogie is provided with a rotating shaft sleeve, the rotating shaft sleeve is provided in two groups, a side installation of one group of the rotating shaft sleeve is provided with a first short-direction rotating screw, a center end of the bogie is externally installed with a first vertical frame, an inner opposite installation of the first vertical frame is provided with a first bearing piece, a center end of the first bearing piece is installed and provided with a first screw gear, a side installation of the first vertical frame is externally installed with a first high-angle adjusting motor, both side surfaces of the bogie are provided with a rotating installation groove, an inner installation of the rotating installation groove is provided with an adjusting telescopic rod, the adjusting telescopic rod is provided in two groups, the bottom side end of each group of the adjusting telescopic rod is fixedly connected with an adjusting support telescopic column, the top end of the adjusting telescopic rod is fixedly connected with an installation base plate, and the two ends of the adjusting support telescopic column are fixedly connected with the installation base plate and the adjusting telescopic rod respectively, the surface of one group of the installation base plate is fixedly installed with a synthetic aperture radar, the surface of the other group of the installation base plate is fixedly installed with a signal wave receiving concave plate, and a side installation of the other group of the rotating shaft sleeve is provided with a second short-direction rotating screw, a center end of the bogie is externally installed with a second vertical frame, an inner opposite installation of the second vertical frame is provided with a second bearing piece, a center end of the second bearing piece is installed and provided with a second screw gear, and an external installation of the second vertical frame is installed with a second high-angle adjusting motor.

[0007] Preferably, the side of the positioning plate is fixedly connected with a side frame, the inner side end of the side frame is fixedly installed with an adjusting extension assembly, the bottom end of the side frame is installed and provided with a movable telescopic column, the middle end of the movable telescopic column is installed and provided with a connecting seat, the side surface of the connecting seat is fixedly connected with a transverse extension frame, and the middle end of the transverse extension frame is installed and provided with a detection assembly. The movable telescopic column can be used for active adjustment and installation during dam body monitoring operation, and the whole device can be provided in multiple groups and installed in a triangular array or a cross array on the surface of the dam body, so as to facilitate accurate monitoring of dam body deformation.

[0008] Preferably, the adjusting extension assembly comprises a forked movable frame, the connecting end of the forked movable frame is installed and provided with a rotating shaft ring, the shaft center end of the rotating shaft ring is installed and provided with a micro air cylinder, the output end of the micro air cylinder is connected with a telescopic air rod, and the side end of the telescopic air rod is fixedly connected with a cross connecting frame. The cross movable frame is used for monitoring the dam body after the extension operation of the whole device, and the micro air cylinder drives the telescopic air rod and the cross connecting frame to perform a telescopic operation on the preset monitoring point after the whole device is installed on the preset monitoring point.

[0009] Preferably, the side end of the cross connection frame is fixedly installed with a hollow adapter seat, the side of the hollow adapter seat is provided with an installation hole diameter, and the inside of the hollow adapter seat is provided with a servo motor, the output end of the servo motor is connected with a resistance feeding rod, after the telescopic air rod performs telescopic operation, the hollow adapter seat, the servo motor and the resistance feeding rod are driven to perform synchronous operation, then the servo motor drives the resistance feeding rod to perform drilling operation, and the drilling operation of the resistance feeding rod can form phased operation under the control of the PLC controller.

[0010] Preferably, the detection assembly comprises a translation guide rail frame, the side of the translation guide rail frame is provided with a moving clamping key, the outside of the translation guide rail frame is slidably connected with a clamping cylinder, and the inside of the clamping cylinder is provided with a magnetic flux inclination data acquisition instrument, under the action of the translation guide rail frame, the clamping cylinder can drive the magnetic flux inclination data acquisition instrument to perform fixed-point moving operation under the cooperation of the moving clamping key, the magnetic flux inclination data acquisition instrument cooperates with the drilling operation of the resistance feeding rod, so that the inclination data of the inside of the dam body can be monitored in real time.

[0011] Preferably, the side of the magnetic flux inclination data acquisition instrument is connected with an adjusting seat, and the top of the adjusting seat is provided with an adjusting cylinder, under the cooperation of the adjusting cylinder and the adjusting seat, the magnetic flux inclination data acquisition instrument can be driven to rotate for angle adjustment, and the data of the resistance feeding rods arranged at the left and right ends during operation can be monitored.

[0012] Preferably, the side of the magnetic flux inclination data acquisition instrument is connected with an adjusting seat, and the top of the adjusting seat is provided with an adjusting cylinder, under the cooperation of the adjusting cylinder and the adjusting seat, the magnetic flux inclination data acquisition instrument can be driven to rotate for angle adjustment, and the data of the resistance feeding rods arranged at the left and right ends during operation can be monitored.

[0013] Preferably, the center of the positioning plate is provided with a spiral opening, and the inside of the spiral opening is threadedly connected with an adjusting threaded rod, under the cooperation of the adjusting threaded rod, the inside of the spiral opening can be adjusted to rotate spirally.

[0014] Preferably, the side end of the adjusting threaded rod is fixedly connected with a positioning fixed drill bit, and the other side end of the adjusting threaded rod is fixedly connected with an adjusting wheel, and the adjusting wheel can drive the adjusting threaded rod to rotate, so that the positioning fixed drill bit is fixedly installed on the outer wall surface of the dam body.

[0015] Preferably, the side wall surface of the positioning plate is provided with a PLC controller, and the PLC controller is electrically connected with the first high-angle adjusting motor, the second high-angle adjusting motor, the servo motor, the micro pneumatic cylinder and the adjusting pneumatic cylinder through lines, so that the overall device is controlled under the action of the PLC controller, so that the overall device forms an integrated electrical control system, and the dam body is monitored in real time and accurately by cooperating with the synthetic aperture radar and the magnetic flux inclination data acquisition instrument.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、In the present application, under the cooperation of the monitoring and adjusting assembly, the fluctuation frequency modulator and the signal wave adapter, the first high-angle adjusting motor, the first screw gear, the first short-direction rotating screw rod and a group of shaft sleeves are used to drive the adjusting telescopic rod in the turning installation groove to adjust, so that the adjusting telescopic rod drives a group of installation base plates and the synthetic aperture radar to work outside the dam body under the cooperation of the adjusting support telescopic column, and another group of installation base plates and the signal wave receiving concave plate are adjusted under the cooperation of the second high-angle adjusting motor, the second screw gear, the second short-direction rotating screw rod and another group of shaft sleeves, so that the wave band worked by the synthetic aperture radar is received and fed back, the wave band worked by the synthetic aperture radar forms multi-angle and multi-wide area detection wave operation under the receiving and reflecting action of the signal wave receiving concave plate, the wave frequency generated by the synthetic aperture radar is adjusted by the fluctuation frequency modulator, the inside of the dam body is monitored and fed back, the overall frequency is controlled by the PLC controller and the fluctuation frequency modulator to form low frequency-high frequency-low frequency intermittent monitoring, the accuracy of the deformation monitoring data collection of the dam body is improved, and then the radar wave signal of the synthetic aperture radar received by the signal wave receiving concave plate is transmitted to the synthetic aperture radar under the cooperation of the signal wave adapter, so that the synthetic aperture radar obtains two single-view complex images with coherence in the same area of the dam body with a certain view angle difference, and the three-dimensional image picture of the dam body is reconstructed by cooperating with the wave imaging instrument to change the deformation degree data of the dam body, so that the staff can monitor in real time, and once the deformation degree of the dam body exceeds the tolerance threshold of the dam body, the staff is warned by the external warning device, and the property and personnel loss is reduced.

[0018] 2、The present application, by adjusting the extension assembly and the detection assembly cooperate, use micro-cylinder drive telescopic air rod, cross connecting frame, hollow adapter, servo motor and into the material bar to install preset monitoring point for fixed point telescopic operation, synchronous use servo motor drive into the material bar drilling operation, and into the material bar drilling operation can be under the control of PLC controller form stage operation, then under the action of the translation guide rail frame, so that the clamping cylinder can drive the magnetic flux inclination data acquisition instrument in the cooperation of the moving clamping key for fixed point movement operation, and under the cooperation of the adjusting cylinder and the adjusting seat, it is convenient to drive the magnetic flux inclination data acquisition instrument to adjust the angle rotation, the magnetic flux inclination data acquisition instrument cooperate with the drilling operation of the material bar, it is convenient to monitor the internal inclination data of the dam body in real time.

[0019] 3、The present application, by adjusting the extension assembly, movable telescopic column and transverse extension frame, when the whole device is installed on the surface of the dam, the installation operation can be carried out by installing the preset monitoring point, and the whole device can be set as multiple groups, which is installed in the shape of a triangle array or a cross array on the surface of the dam, so as to accurately monitor the deformation of the dam, and under the action of the PLC controller, the whole device is controlled to form an integrated electrical control system, which cooperates with the synthetic aperture radar and the magnetic flux inclination data acquisition instrument to accurately monitor the internal of the dam in real time. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a main installation position structure diagram of the dam deformation monitoring device based on the interference synthetic aperture radar technology in the application;

[0021] Figure 2 It is an installation position diagram of the monitoring adjusting assembly in the dam deformation monitoring device based on the interference synthetic aperture radar technology in the application;

[0022] Figure 3 It is an installation structure diagram of the adjusting wheel, adjusting screw rod and positioning fixed drill bit in the dam deformation monitoring device based on the interference synthetic aperture radar technology in the application;

[0023] Figure 4 It is a structure diagram of the adjusting extension assembly in the dam deformation monitoring device based on the interference synthetic aperture radar technology in the application;

[0024] Figure 5 It is a structure diagram of the detection assembly in the dam deformation monitoring device based on the interference synthetic aperture radar technology in the application;

[0025] Figure 6It is the separation structure schematic view of the adjustment extension assembly in the dam deformation monitoring device based on the interferometric synthetic aperture radar technology of the application;

[0026] Figure 7 It is the structure schematic view of the monitoring adjustment assembly in the dam deformation monitoring device based on the interferometric synthetic aperture radar technology of the application;

[0027] Figure 8 It is the amplification structure schematic view of the dam deformation monitoring device based on the interferometric synthetic aperture radar technology of the application; Figure 7

[0028] In the figure: 1, dam body; 2, positioning plate; 3, monitoring adjustment assembly; 31, bogie; 32, rotating shaft sleeve; 33, adjustment telescopic rod; 34, installation base plate; 35, synthetic aperture radar; 36, signal wave receiving concave plate; 37, turning installation groove; 38, first short direction rotating screw; 39, first stand; 391, first bearing part; 392, first screw gear; 393, first high angle adjustment motor; 394, second short direction rotating screw; 395, second stand; 396, second bearing part; 397, second screw gear; 398, second high angle adjustment motor; 4, side frame; 5, movable telescopic column; 6, adjustment extension assembly; 61, fork movable frame; 62, rotating shaft ring; 63, micro air cylinder; 64, telescopic air rod; 65, hollow connection seat; 66, servo motor; 67, resistance feeding rod; 68, cross connection frame; 69, installation aperture; 7, connection seat; 8, transverse extension frame; 9, detection assembly; 91, translation guide rail frame; 92, moving clamping key; 93, clamping air cylinder; 94, adjustment seat; 95, adjustment air cylinder; 96, magnetic flux inclination data acquisition instrument; 10, adjustment wheel; 11, adjustment threaded rod; 12, positioning fixed drill bit; 13, stable frame. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0030] REFERENCE Figures 1-8 ​As shown: a dam deformation monitoring device based on interferometric synthetic aperture radar technology, comprising a dam body 1, a stable frame 13 is tightly installed on the outer wall surface of the dam body 1, the stable frame 13 is provided as four groups, the side end of the four groups of stable frames 13 is tightly connected with a positioning plate 2, and the upper and lower ends of the positioning plate 2 are both installed with a monitoring adjusting assembly 3; the monitoring adjusting assembly 3 comprises a bogie 31, the bogie 31 is tightly installed on the two sides of the positioning plate 2 with a height difference, the inside of the bogie 31 is installed with a rotating shaft sleeve 32, the rotating shaft sleeve 32 is provided as two groups, the side of one group of rotating shaft sleeves 32 is installed with a first short directional rotating screw 38, the center end of the bogie 31 is externally installed with a first vertical frame 39, the inside of the first vertical frame 39 is oppositely installed with a first bearing 391, the center end of the first bearing 391 is installed with a first screw gear 392, the side of the first vertical frame 39 is externally installed with a first high-angle adjusting motor 393, and the two side surfaces of the bogie 31 are both provided with a turning installation groove 37, the inside of the turning installation groove 37 is installed with an adjusting telescopic rod 33, the adjusting telescopic rod 33 is provided as two groups, the bottom side end of the two groups of adjusting telescopic rods 33 is tightly connected with an adjusting support telescopic column, the top end of the adjusting telescopic rod 33 is tightly connected with an installation base plate 34, and the two ends of the adjusting support telescopic column are tightly connected with the installation base plate 34 and the adjusting telescopic rod 33, respectively, the surface of one group of installation base plates 34 is tightly installed with a synthetic aperture radar 35, and the surface of the other group of installation base plates 34 is tightly installed with a signal wave receiving concave plate 36, and the side of the other group of rotating shaft sleeves 32 is installed with a second short directional rotating screw 394, the center end of the bogie 31 is externally installed with a second vertical frame 395, the inside of the second vertical frame 395 is oppositely installed with a second bearing 396, the center end of the second bearing 396 is installed with a second screw gear 397, and the outside of the second vertical frame 395 is externally installed with a second high-angle adjusting motor 398.

[0031] According to Figure 1 and Figure 2 , the side of the positioning plate 2 is tightly connected with a side frame 4, the inside end of the side frame 4 is tightly installed with an adjusting extension assembly 6, the bottom end of the side frame 4 is installed with a movable telescopic column 5, the middle end of the movable telescopic column 5 is provided with a connecting seat 7, the side surface of the connecting seat 7 is tightly connected with a transverse extension frame 8, the middle end of the transverse extension frame 8 is installed with a detection assembly 9, the whole can be adjusted and installed by using the movable telescopic column 5 when monitoring the dam body 1, and the whole device can be provided as multiple groups, which is installed in a triangular array or a cross array on the surface of the dam body 1, so as to facilitate accurate monitoring of the deformation of the dam body 1.

[0032] According to Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the adjusting and expanding assembly 6 comprises a clamping movable frame 61, the connecting end of the clamping movable frame 61 is provided with a rotating shaft ring 62, the shaft end of the rotating shaft ring 62 is provided with a micro pneumatic cylinder 63, the output end of the micro pneumatic cylinder 63 is connected with a telescopic pneumatic rod 64, the side end of the telescopic pneumatic rod 64 is fixedly connected with a cross connecting frame 68, by using the cross movable frame 61, the dam body 1 can be monitored after the overall device is stretched, and then the micro pneumatic cylinder 63 drives the telescopic pneumatic rod 64 and the cross connecting frame 68 to perform the telescopic operation on the preset monitoring point.

[0033] According to Figure 1 , Figure 2 , Figure 4 and Figure 6 , the side end of the cross connecting frame 68 is fixedly installed with a hollow connecting seat 65, the side of the hollow connecting seat 65 is provided with an installation hole 69, and the inside of the hollow connecting seat 65 is provided with a servo motor 66, the output end of the servo motor 66 is connected with a resistance feeding rod 67, after the telescopic pneumatic rod 64 performs the telescopic operation, the hollow connecting seat 65, the servo motor 66 and the resistance feeding rod 67 are driven to perform the synchronous operation, then the servo motor 66 drives the resistance feeding rod 67 to perform the drilling operation, and the drilling operation of the resistance feeding rod 67 can be controlled by the PLC controller to form a phased operation.

[0034] According to Figure 1 , Figure 2 and Figure 5 , the detection assembly 9 comprises a translation guide rail frame 91, the side of the translation guide rail frame 91 is provided with a moving clamping key 92, the outside of the translation guide rail frame 91 is slidably connected with a clamping pneumatic cylinder 93, the inside of the clamping pneumatic cylinder 93 is provided with a magnetic flux inclination data acquisition instrument 96, under the action of the translation guide rail frame 91, the clamping pneumatic cylinder 93 can drive the magnetic flux inclination data acquisition instrument 96 to perform the point moving operation under the cooperation of the moving clamping key 92, by using the magnetic flux inclination data acquisition instrument 96 cooperating with the drilling operation of the resistance feeding rod 67, the inclination data inside the dam body 1 can be monitored in real time.

[0035] According to Figure 1 , Figure 2 and Figure 5 , the side of the magnetic flux inclination data acquisition instrument 96 is connected with an adjusting seat 94, the top of the adjusting seat 94 is provided with an adjusting pneumatic cylinder 95, under the cooperation of the adjusting pneumatic cylinder 95 and the adjusting seat 94, the magnetic flux inclination data acquisition instrument 96 can be driven to rotate for angle adjustment, and the data of the resistance feeding rod 67 arranged at the left and right ends during the operation can be monitored.

[0036] According toFigure 1 And Figure 2 As shown in , the side wall surface of the positioning plate 2 is provided with a signal wave adapter, the side end of the signal wave adapter is connected with the synthetic aperture radar 35 through a line, and the surface of the signal wave adapter is connected with the external wave imager through a line. The synthetic aperture radar 35 is connected with a wave frequency modulator through a line. Under the cooperation of the signal wave adapter, the radar wave signal received by the signal wave receiving concave plate 36 is transmitted to the synthetic aperture radar 35 (InSAR, Interferometric Synthetic Aperture Radar, model HAWK-R2S, based on frequency modulation continuous wave radar system, through circular aperture synthesis aperture imaging and differential interferometric measurement technology, realizing high resolution imaging and sub-millimeter level deformation measurement precision, which can realize omnidirectional, non-contact and high-precision monitoring of the micro deformation of the slope body). The synthetic aperture radar 35 uses two SAR antennas (or one antenna repeatedly observed) with interference imaging capability to obtain two single-view complex images with coherence of the same area of the dam body 1 with a certain angle difference, and obtains the internal deformation information of the dam body 1 from the interference phase information, so as to cooperate with the wave imager to reconstruct the three-dimensional image of the dam body 1. The deformation degree of the dam body 1 is convenient for staff to monitor in real time. Once the deformation degree of the dam body 1 exceeds the tolerance threshold of the dam body 1, the external warning device alarms the staff to reduce the loss of property and personnel.

[0037] According to Figure 2 , Figure 3 and Figure 7 , the center end of the positioning plate 2 is provided with a spiral port, and the inside of the spiral port is threadedly connected with an adjusting threaded rod 11. Under the cooperation of the adjusting threaded rod 11, the spiral rotation adjustment in the spiral port is facilitated.

[0038] According to Figure 3 and Figure 7 , the side end of the adjusting threaded rod 11 is tightly connected with a positioning fixed drill bit 12, and the other side end of the adjusting threaded rod 11 is tightly connected with an adjusting wheel 10. The adjusting wheel 10 can drive the adjusting threaded rod 11 to rotate, so that the positioning fixed drill bit 12 is fixedly installed on the outer wall surface of the dam body 1.

[0039] According to Figure 1 and Figure 2As shown, the side wall surface of the positioning plate 2 is provided with a PLC controller, which is electrically connected with the first high-angle adjusting motor 393, the second high-angle adjusting motor 398, the servo motor 66, the micro cylinder 63 and the adjusting cylinder 95 through lines, and under the action of the PLC controller, the overall device is controlled, so that the overall device forms an integrated electrical control system, cooperates with the synthetic aperture radar 35 and the magnetic flux inclination data acquisition instrument 96 to perform real-time and accurate monitoring operation on the inside of the dam body 1.

[0040] The wiring diagram of the synthetic aperture radar 35, the signal wave receiving concave plate 36, the first high-angle adjusting motor 393, the second high-angle adjusting motor 398, the micro cylinder 63, the servo motor 66, the adjusting cylinder 95 and the magnetic flux inclination data acquisition instrument 96 in the application belongs to the common knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use; therefore, the control mode and the wiring arrangement of the synthetic aperture radar 35, the signal wave receiving concave plate 36, the first high-angle adjusting motor 393, the second high-angle adjusting motor 398, the micro cylinder 63, the servo motor 66, the adjusting cylinder 95 and the magnetic flux inclination data acquisition instrument 96 are not explained in detail.

[0041] The method for using the device and the working principle are as follows: firstly, when the internal deformation of the dam body 1 needs to be monitored in real time, the overall device is extended and adjusted under the assistance of the staff, by means of the movable telescopic column 5, the clamping fork movable frame 61 and the transverse extension frame 8; then, after the installation of the preset monitoring point is adjusted to the point, the stable frame 13 is attached to the outer wall surface of the dam body 1; then, the positioning fixed drill bit 12 is fixed and installed on the outer wall surface of the dam body 1 by rotating the adjusting wheel 10 manually to drive the adjusting threaded rod 11 to rotate; then, the overall device is installed and arranged. Then, the preset monitoring point is fixed and extended by means of the micro-cylinder 63, the telescopic air rod 64, the cross connecting frame 68, the hollow connecting seat 65, the servo motor 66 and the in-and-out material taking rod 67; the in-and-out material taking rod 67 is drilled by the servo motor 66 at the same time, and the drilling operation of the in-and-out material taking rod 67 can be carried out in stages under the control of the PLC controller. Then, under the action of the translation guide rail frame 91, the magnetic flux inclination data acquisition instrument 96 is moved in a fixed position by means of the clamping cylinder 93 and the moving clamping key 92; and under the cooperation of the adjusting cylinder 95 and the adjusting seat 94, the magnetic flux inclination data acquisition instrument 96 is rotated for angle adjustment; the internal inclination data of the dam body 1 is monitored in real time by means of the magnetic flux inclination data acquisition instrument 96 cooperating with the drilling operation of the in-and-out material taking rod 67. Secondly, the overall device is controlled by means of the PLC controller, so that the overall device forms an integrated electrical control system, and the internal part of the dam body 1 is monitored in real time and accurately by means of the synthetic aperture radar 35 and the magnetic flux inclination data acquisition instrument 96. When the installation of the overall device is completed, the first high-angle adjusting motor 393 drives the first screw gear 392 to rotate, so that the first short-direction rotating screw rod 38 rotates under the cooperation of a group of rotating shaft sleeves 32, thereby driving the adjusting telescopic rod 33 in the turning installation groove 37 to adjust, so that the adjusting telescopic rod 33 drives a group of installation base plates 34 and the synthetic aperture radar 35 to work outside the dam body 1 under the cooperation of the adjusting support telescopic column. At the same time, the second high-angle adjusting motor 398 drives the second screw gear 397 to rotate, so that the second short-direction rotating screw rod 394 rotates under the cooperation of another group of rotating shaft sleeves 32, thereby driving another group of installation base plates 34 and the signal wave receiving concave plate 36 to adjust, so as to receive and feedback the wave band worked by the synthetic aperture radar 35, so that the wave band worked by the synthetic aperture radar 35 forms multi-angle and multi-wide area detection wave operation under the receiving and reflecting action of the signal wave receiving concave plate 36. And under the action of the wave frequency modulator, the wave frequency generated by the synthetic aperture radar 35 is adjusted by the wave frequency modulator, so as to monitor and feedback the internal multi-level of the dam body 1, so that the overall frequency is controlled by the PLC controller and the wave frequency modulator, forming low frequency-high frequency-low frequency intermittent monitoring, improving the accuracy of the internal deformation monitoring data collection of the dam body 1.Afterwards, under the cooperation of the signal wave adapter, the radar wave signals received by the signal wave receiving concave plate 36 are transmitted to the synthetic aperture radar 35, so that the synthetic aperture radar 35 uses two SAR antennas (or one antenna repeatedly observes) with interference imaging capability to obtain two single-view complex images with coherence of the same area of the dam body 1 with a certain view angle difference, and obtains the internal deformation information of the dam body 1 from the interference phase information, so as to cooperate with the wave-to-image instrument to reconstruct the three-dimensional image of the dam body 1 according to the internal deformation data change of the dam body 1, so as to facilitate real-time monitoring of the staff, and once the internal deformation of the dam body 1 exceeds the tolerance threshold of the dam body 1, the staff is warned through the external warning device, reducing the property and personnel loss.

[0042] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dam deformation monitoring device based on interferometric synthetic aperture radar technology, comprising a dam body (1), characterized in that: The outer wall surface of the dam body (1) is fastened with a stabilizing frame (13). The stabilizing frame (13) is set into four groups. The side ends of the four groups of stabilizing frames (13) are fastened with positioning plates (2). The upper and lower ends of the positioning plates (2) are equipped with monitoring and adjustment components (3). The monitoring and adjustment assembly (3) includes a bogie (31). The bogie (31) is fastened to both sides of the positioning plate (2) with a vertical height difference. A rotating bushing (32) is installed inside the bogie (31). The rotating bushing (32) is configured in two sets. A first short-direction rotating screw (38) is installed on the side of one set of the rotating bushing (32). A first upright (39) is mounted on the outside of the center end of the bogie (31). A first bearing component (391) is installed opposite to the inside of the first upright (39). A first screw gear (392) is installed on the center end of the first bearing component (391). A first high-angle adjustment motor (393) is mounted on the side of the first upright (39). A steering mounting groove (37) is opened on both sides of the bogie (31). An adjusting telescopic rod (33) is installed inside the steering mounting groove (37). The adjusting telescopic rod (33) is configured in two sets. The bottom side of each of the adjustable telescopic rods (33) is fastened with an adjustable support telescopic column, and the top of each of the adjustable telescopic rods (33) is fastened with a mounting base plate (34). The two ends of the adjustable support telescopic column are fastened to the mounting base plate (34) and the adjustable telescopic rod (33) respectively. A synthetic aperture radar (35) is fastened to the surface of one set of mounting base plates (34), and a signal wave receiving concave plate (36) is fastened to the surface of another set of mounting base plates (34). A second short-direction rotating screw (394) is installed on the side of another set of rotating bushings (32). A second upright (395) is mounted on the outside of the center end of the bogie (31). A second bearing component (396) is mounted opposite each other inside the second upright (395). A second screw gear (397) is mounted on the center end of the second bearing component (396). A second high-angle adjustment motor (398) is mounted on the outside of the second upright (395).

2. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 1, characterized in that: The positioning plate (2) is fastened to the side of a side frame (4), and an adjustment extension component (6) is fastened to the inner end of the side frame (4). A movable telescopic column (5) is installed at the bottom end of the side frame (4), and a connecting seat (7) is installed at the middle end of the movable telescopic column (5). A transverse extension frame (8) is fastened to the side surface of the connecting seat (7), and a detection component (9) is installed at the middle end of the transverse extension frame (8).

3. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 2, characterized in that: The adjustment and extension assembly (6) includes a fork-type movable frame (61), a rotating shaft ring (62) is installed at the connecting end of the fork-type movable frame (61), a miniature cylinder (63) is installed at the axial end of the rotating shaft ring (62), a telescopic air rod (64) is connected to the output end of the miniature air rod (63), and a cross connecting frame (68) is fastened to the side end of the telescopic air rod (64).

4. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 3, characterized in that: A hollow connecting seat (65) is fastened to the side end of the cross connecting frame (68). The side of the hollow connecting seat (65) is provided with a through mounting hole (69). A servo motor (66) is installed inside the hollow connecting seat (65). The output end of the servo motor (66) is connected to a push-in material picking rod (67).

5. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 2, characterized in that: The detection component (9) includes a translation guide rail (91), on which a moving locking key (92) is provided on the side. A clamping cylinder (93) is slidably connected to the outside of the translation guide rail (91), and a magnetic flux tilt data acquisition instrument (96) is installed inside the clamping cylinder (93).

6. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 5, characterized in that: The magnetic flux tilt data acquisition instrument (96) has an adjustment seat (94) connected inside its side, and an adjustment cylinder (95) is installed on the top of the adjustment seat (94).

7. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 1, characterized in that: A signal wave converter is installed on the side wall surface of the positioning plate (2). The side end of the signal wave converter is connected to the synthetic aperture radar (35) via a line, and the surface of the signal wave converter is connected to an external waveguide imager via a line. The synthetic aperture radar (35) is connected to a waveguide frequency tuner via a line.

8. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 1, characterized in that: The center end of the positioning plate (2) is provided with a spiral opening, and the internal thread of the spiral opening is connected to an adjusting thread rod (11).

9. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 8, characterized in that: The adjusting threaded rod (11) is fastened to a positioning and fixing drill bit (12) on one side, and an adjusting wheel (10) is fastened to the other side of the adjusting threaded rod (11).

10. The dam deformation monitoring device based on interferometric synthetic aperture radar technology according to claim 1, characterized in that: A PLC controller is installed on the side wall surface of the positioning plate (2). The PLC controller is electrically connected to the first high angle adjustment motor (393), the second high angle adjustment motor (398), the service motor (66), the micro cylinder (63), and the adjustment cylinder (95) through a circuit.

Images