CN116047439A - Comprehensive calibration measurement device for ground penetrating radar - Google Patents
Comprehensive calibration measurement device for ground penetrating radar Download PDFInfo
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- CN116047439A CN116047439A CN202310158227.8A CN202310158227A CN116047439A CN 116047439 A CN116047439 A CN 116047439A CN 202310158227 A CN202310158227 A CN 202310158227A CN 116047439 A CN116047439 A CN 116047439A
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- ground penetrating
- penetrating radar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a comprehensive calibration measurement device of a ground penetrating radar, which comprises a bearing frame, a thickness experiment block, a ground penetrating radar, a reflecting plate for bearing the thickness experiment block, a clamp mechanism for clamping the ground penetrating radar and a bearing platform for bearing the reflecting plate, wherein four corners of the bearing frame are respectively connected with a lifting screw rod, each lifting screw rod is in threaded connection with one bearing platform, a group of lifting supporting mechanisms are respectively arranged at four corners of the reflecting plate, and the reflecting plate is lapped on the bearing platform through the lifting supporting mechanisms at the four corners; the fixture mechanism is positioned right above the reflecting plate and is fixedly connected to the top of the bearing frame, so that the problems of low universality and low calibration efficiency of the conventional ground penetrating radar calibration equipment are solved, the calibration of the relative error of radar wave speed measurement and radar thickness measurement error of the ground penetrating radar can be realized, radar antennas with different volumes and shapes are met, and the universality of the calibration device is improved.
Description
Technical Field
The invention relates to the technical field of radar calibration equipment, in particular to a comprehensive calibration measurement device for a ground penetrating radar.
Background
Ground penetrating radar is a broad spectrum technique for determining the distribution of subsurface media. The device is generally composed of a transmitting antenna, a receiving antenna and a control unit, wherein the transmitting antenna transmits electromagnetic waves with specific frequency ranges into a medium according to instructions of the control unit, the electromagnetic waves are reflected and refracted when encountering medium change in the propagation process, and the reflected electromagnetic waves are received by the receiving antenna and transmitted back to the control unit, so that corresponding targets or interface information is detected. The ground penetrating radar can be used for detecting concrete structures of roads, bridges and tunnels, such as highway pavement and tunnel lining thickness, void and cavity, concrete uniformity and compactness, leakage tape and undercompaction of backfill. At present, the requirements on the detection precision of the ground penetrating radar are gradually improved, the radar detection precision is accurately calibrated in a periodic manner in the use stage of the ground penetrating radar, the calibration method for measuring the relative error of the wave speed of the ground penetrating radar and the indication error of the thickness measurement is gradually mature, but the ground penetrating radar has different volumes and shapes due to different types and center frequencies, so that the calibration devices adopted in the standard calibration of different ground penetrating radars are various, cannot be effectively unified, the universality is poor, and the adjustment of the radar and related equipment thereof in the calibration process is relatively inconvenient, so that the calibration efficiency is low. Therefore, it is needed to design a comprehensive calibration measurement device for the ground penetrating radar, which has high versatility, is convenient to use and has high calibration efficiency, so that the comprehensive calibration measurement device is suitable for the calibration process of the relative error of the wave velocity measurement and the indication error of the thickness measurement of the ground penetrating radar.
Disclosure of Invention
The invention aims to solve the technical problem of providing a comprehensive calibration measurement device for a ground penetrating radar, which solves the problems of low universality and low calibration efficiency of the existing ground penetrating radar calibration equipment, thereby overcoming the defects of the prior art.
In order to solve the technical problems, the invention discloses a comprehensive calibration measurement device for a ground penetrating radar, which comprises a bearing frame, a thickness experiment block, the ground penetrating radar, a reflecting plate for bearing the thickness experiment block, a clamp mechanism for clamping the ground penetrating radar and a bearing platform for bearing the reflecting plate.
The bearing frame is of a frame structure, four corners of the bearing frame are respectively connected with a vertically arranged lifting screw rod, and the lower end of each lifting screw rod is connected with a group of driving motors; each group of lifting screw rods is in threaded connection with one bearing platform, and the axial lead of each lifting screw rod is perpendicular to the bearing surface of the bearing platform; the four corners of the reflecting plate are respectively provided with a group of lifting supporting mechanisms, the lower part of each group of lifting supporting mechanisms corresponds to a bearing platform, and the reflecting plate is lapped on the bearing platform through the lifting supporting mechanisms at the four corners; the clamp mechanism is positioned right above the reflecting plate and is fixedly connected to the top of the bearing frame.
As an improvement of the invention, the bearing frame comprises a transverse connecting piece and two groups of vertical supporting pieces, wherein the vertical supporting pieces adopt a rectangular frame with a half opening, the rectangular frame is downwards opened, the two groups of vertical supporting pieces are oppositely arranged, the transverse connecting piece is positioned in the middle of the two groups of vertical supporting pieces, the end parts of the transverse connecting piece are respectively connected to the middle parts of the top sides of the two groups of vertical supporting pieces, and at least two clamp fixing holes are formed in the middle parts of the transverse connecting pieces.
As a further improvement of the invention, a guide rod with the same length is also arranged at the side of each lifting screw rod, the guide rods are parallel to the lifting screw rods, a guide hole and a threaded hole are arranged on the same bearing platform, the guide holes are coaxially sleeved on the guide rods, and the threaded holes are in threaded fit with the lifting screw rods.
As an improvement of the invention, the clamp mechanism comprises a clamp mounting frame, two screw handrails and two clamping pieces which are oppositely arranged, wherein the clamp mounting frame comprises a transverse connecting plate and vertical fixing plates with two opposite parallel sides, and the vertical fixing plates are vertically connected with the transverse connecting plate; the surface of each vertical fixing plate of the fixture mounting rack is respectively provided with an adjusting nut, the adjusting nuts freely rotate along the circumferential direction relative to the vertical fixing plates, the adjusting nuts on the vertical fixing plates on two sides are positioned on the same axis, each screw rod handrail corresponds to one adjusting nut, and the screw rod handrails are coaxially connected in the adjusting nuts; the two clamping pieces are respectively arranged at the opposite ends of the two screw rod armrests, and the screw rod armrests are enabled to relatively displace relative to the vertical fixing plate in the axial direction by respectively screwing the adjusting nuts, so that the distance between the two clamping pieces is adjusted.
As a further improvement of the invention, the middle part of the transverse connecting plate of the clamp mounting frame is provided with the fixing bolts, the number and the positions of the fixing bolts are in one-to-one correspondence with the number and the positions of the clamp fixing holes of the transverse connecting piece on the bearing frame, and the clamp mounting frame is fixedly connected in the clamp fixing holes through the fixing bolts.
As a further improvement of the invention, a group of universal wheels are respectively arranged at four corners of the lower surface of the reflecting plate, and lifting supporting mechanisms are arranged at four corners of the reflecting plate and are used for lifting the reflecting plate and enabling the universal wheels at the bottom of the reflecting plate to be separated from the bearing platform.
As a further improvement of the invention, the bearing platform adopts a fan-shaped structure with a central angle of 90 degrees.
As a further improvement of the invention, the comprehensive calibration measurement device of the ground penetrating radar further comprises a ground lining plate, wherein the ground lining plate is parallel to the reflecting plate, the ground lining plate is arranged at the lower end of the lifting screw, and when the bearing platform descends to the bottommost position of the lifting screw, the upper surface of the bearing platform is level with the upper surface of the ground lining plate.
As a further improvement of the invention, the four corners of the upper surface of the thickness experiment block are respectively provided with a first displacement sensor, and the first displacement sensors are used for monitoring the displacement distance between the thickness experiment block and the ground penetrating radar.
As a further improvement of the invention, the four corners of the upper surface of the reflecting plate are respectively provided with a second displacement sensor, and the second displacement sensors are used for monitoring the displacement distance between the reflecting plate and the ground penetrating radar.
With such a design, the invention has at least the following advantages:
(1) The comprehensive calibration measurement device for the ground penetrating radar realizes the integration of radar calibration equipment, meets the calibration requirements of the ground penetrating radar on the relative error of radar wave velocity measurement and the radar thickness measurement indication error, and can realize the calibration of the ground penetrating radar on the relative error of radar wave velocity measurement and the radar thickness measurement error under the condition of not dismantling the ground penetrating radar; and the distance between the clamping pieces can be adjusted by adjusting the displacement distance of the screw rod handrail, so that the clamping of different radars is realized, radar antennas with different volumes and shapes are met, and the universality of the calibrating device is improved.
(2) According to the invention, the distance between the reflecting plate and the bottom of the ground penetrating radar can be conveniently adjusted through the cooperation of the lifting screw and the bearing platform, so that the position requirements of the metal plate on 200mm, 400mm, 600mm and 800mm in the vertical direction from the metal plate surface are met, the height adjusting function is realized, the levelness of the reflecting plate can be finely adjusted, the calibration requirements of different types of ground penetrating radars are met, the operation is simple and convenient, and the calibration device can provide a reliable basis for data evaluation of the ground penetrating radars.
(3) The universal wheels are arranged at the bottoms of the reflecting plates for bearing the thickness test blocks, the thickness test blocks can be conveniently moved through the universal wheels, and further the thickness test blocks with different thicknesses can be conveniently assembled and disassembled on the reflecting plates, meanwhile, lifting supporting mechanisms are arranged at four corners of the reflecting plates, and when the ground penetrating radar works, the lifting supporting mechanisms are used for lifting the reflecting plates and enabling the universal wheels at the bottoms of the reflecting plates to be separated from the bearing platform, so that the thickness test blocks are stably and fixedly supported, the thickness test blocks and the reflecting plates are prevented from falling from the bearing platform, and the safety of equipment is improved.
Drawings
The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.
Fig. 1 is a schematic diagram of the front view structure of a comprehensive calibration measurement device for a ground penetrating radar in an embodiment of the present invention.
Fig. 2 is a schematic side view of a comprehensive calibration measurement device for a ground penetrating radar according to an embodiment of the present invention.
Fig. 3 is a schematic top view of a comprehensive calibration measurement device (without a reflecting plate) for a ground penetrating radar according to an embodiment of the present invention.
Fig. 4 is an enlarged view of the position a in fig. 2.
Fig. 5 is a schematic elevational view of the clamp mechanism in an embodiment of the invention.
FIG. 6 is a schematic side view of a clamp mechanism in accordance with an embodiment of the invention.
FIG. 7 is a schematic top view of a clamp mechanism according to an embodiment of the invention.
Fig. 8 is a schematic bottom view of a reflection plate provided with a thickness test block according to an embodiment of the present invention.
Fig. 9 is a schematic side view of a reflection plate provided with a thickness test block according to an embodiment of the present invention.
Meaning of reference numerals in the drawings:
1-a carrier; 101-a transverse connector; 102-vertical supports; 103-a clamp fixing hole; 2-thickness experiment block; 3-reflecting plates; 301-universal wheels; 302-lifting support mechanism; 4-a clamp mechanism; 401-a clamp mount; 402-adjusting the nut; 403-lead screw armrests; 404-clamping piece; 405-fixing bolts; 5-a bearing platform; 6-lifting a screw rod; 7-a ground lining plate; 8-a first displacement sensor; 9-a guide rod.
Detailed Description
Examples of embodiments of the invention are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout, or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of the two parts. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present invention.
Referring to fig. 1-3, the embodiment specifically discloses a comprehensive calibration measurement device for a ground penetrating radar, which comprises a bearing frame 1, a thickness experiment block 2, a ground penetrating radar, a reflecting plate 3 for bearing the thickness experiment block 2, a clamp mechanism 4 for clamping the ground penetrating radar, and a bearing platform 5 for bearing the reflecting plate 3.
Specifically, as shown in fig. 1, the carrier 1 is a frame structure, the carrier 1 includes a transverse connector 101 and two sets of vertical supports 102, the vertical supports 102 adopt a rectangular frame with a half opening, and the rectangular frame is opened downwards, the two sets of vertical supports 102 are oppositely disposed, the transverse connector 101 is located in the middle of the two sets of vertical supports 102, the ends of the transverse connector 101 are respectively connected to the top middle positions of the sets of vertical supports 102, and preferably, in this embodiment, the transverse connector 101 is integrally connected with the vertical supports 102.
In this embodiment, four corners of the carrier 1 are respectively connected with a vertically arranged lifting screw rod 6, and the lower end of each lifting screw rod 6 is connected with a group of driving motors; each group of lifting screw rods 6 are in threaded connection with one bearing platform 5, the axial lead of each lifting screw rod 6 is vertical to the bearing surface of the bearing platform 5, and each lifting screw rod 6 can be driven to independently rotate through a driving motor, so that the corresponding bearing platform 5 can lift; still further, the side at every lift lead screw 6 still is equipped with the guide bar 9 of an identical length, guide bar 9 is parallel with lift lead screw 6, is equipped with guiding hole and screw hole on the same loading platform 5, the coaxial cover of guiding hole is located on guide bar 9, screw hole and lift lead screw 6 screw-thread fit, as shown in fig. 2 and 4, when lift lead screw 6 rotary motion, lift lead screw 6 passes through loading platform 5 screw hole drive loading platform 5 vertical movement, and loading platform 5 displacement in the horizontal direction can be restricted to guide bar 9, and loading platform 5's guiding hole is along 9 axial sliding of guide bar to ensure loading platform 5 stable vertical displacement, avoid reflecting plate 3 to break away from loading platform 5.
The four corners of the reflecting plate 3 are respectively provided with a group of lifting supporting mechanisms 302, and a bearing platform 5 is correspondingly arranged below each group of lifting supporting mechanisms 302, the reflecting plate 3 is lapped on the bearing platform 5 through the lifting supporting mechanisms 302 at the four corners, and when the ground penetrating radar works, the lifting supporting mechanisms 302 are used for lifting the reflecting plate 3 and enabling universal wheels 301 at the bottom of the reflecting plate 3 to be separated from the bearing platform 5, so that stable and fixed supporting of the thickness test assembly is realized, the thickness test assembly and the reflecting plate 3 are prevented from falling off from the bearing platform 5, and the safety of equipment is improved;
in this embodiment, the clamping mechanism 4 is located right above the reflecting plate 3, and the clamping mechanism 4 is fixedly connected to the top of the carrier 1. More specifically, referring to fig. 7-9, in this embodiment, the fixture mechanism 4 includes a fixture mounting frame 401, two screw handrails 403, and two clamping members 404 disposed opposite to each other, where the fixture mounting frame 401 includes a transverse connection plate and two vertical fixing plates with two opposite sides parallel to each other, and the vertical fixing plates are vertically connected to the transverse connection plate; the surface of each vertical fixing plate of the fixture mounting rack 401 is respectively provided with an adjusting nut 402, the adjusting nuts 402 rotate freely along the circumferential direction relative to the vertical fixing plates, the adjusting nuts 402 on the vertical fixing plates on two sides are positioned on the same axis, each screw rod handrail 403 corresponds to one adjusting nut 402, and the screw rod handrails 403 are coaxially connected in the adjusting nuts 402; the two clamping pieces 404 are respectively arranged at opposite ends of the two screw armrests 403, and the screw armrests 403 are relatively displaced in the axial direction relative to the vertical fixing plate by respectively screwing the adjusting nuts 402, so that the distance between the two clamping pieces 404 is adjusted.
In this embodiment, at least two fixture fixing holes 103 are provided in the middle of the transverse connector 101 in the carrier 1. The middle part of the transverse connection plate of the clamp mounting frame 401 is provided with fixing bolts 405, the number and the positions of the fixing bolts 405 are in one-to-one correspondence with the number and the positions of the clamp fixing holes 103 of the transverse connection piece 101 on the bearing frame 1, and the clamp mounting frame 401 and the bearing frame 1 are fixed by penetrating and connecting the fixing bolts 405 in the clamp fixing holes 103.
Furthermore, in this embodiment, in order to ensure that the calibration is accurate, the area of the reflecting plate 3 generally needs to be ensured to be greater than 4 times of the area of the bottom of the ground penetrating radar, meanwhile, a group of universal wheels 301 are respectively disposed at four corners of the lower surface of the reflecting plate 3, lifting supporting mechanisms 302 are disposed at four corners of the reflecting plate 3, and the lifting supporting mechanisms 302 are used for lifting the reflecting plate 3 and separating the universal wheels 301 at the bottom of the reflecting plate 3 from the bearing platform 5, as shown in fig. 5 and 6, preferably, the lifting supporting mechanisms 302 can adopt structures such as lifting cylinders, telescopic cylinders, hydraulic cylinders, screw rods, and the like, and other structures capable of realizing the lifting function of the reflecting plate 3 can also be adopted.
Further, in this embodiment, the carrying platform 5 adopts a fan-shaped structure with a central angle of 90 °. Meanwhile, the comprehensive calibration measurement device for the ground penetrating radar further comprises a ground lining plate 7, the ground lining plate 7 is parallel to the reflecting plate 3, the ground lining plate 7 is arranged at the lower end of the lifting screw rod 6, and when the bearing platform 5 descends to the bottommost position of the lifting screw rod 6, the upper surface of the bearing platform 5 is flush with the upper surface of the ground lining plate 7. When the thickness experiment module 2 is assembled and disassembled by the reflecting plate 3, the reflecting plate 3 can stably move, and the problem that the bearing platform 5 is higher than the ground due to the influence of the thickness structure of the bearing platform 5, so that the universal wheels 301 at the lower part of the reflecting plate 3 cannot stably move from the ground to the bearing platform 5 is avoided.
Preferably, as shown in fig. 6, in this embodiment, first displacement sensors 8 are respectively disposed at four corners of the upper surface of the thickness experiment block 2, and the first displacement sensors 8 are used for monitoring the displacement distance between the thickness experiment block 2 and the ground penetrating radar. Furthermore, in this embodiment, second displacement sensors (not shown in the drawing) are respectively disposed at four corners of the upper surface of the reflecting plate 3, and the second displacement sensors are used for monitoring the displacement distance between the reflecting plate 3 and the ground penetrating radar, and it should be noted that the installation of the displacement sensors on the reflecting plate 3 may be implemented by being built in the grooves on the surface of the reflecting plate 3, or the displacement sensors may be placed on the upper surface when the measurement is needed, and removed after the measurement is completed, and similarly, the displacement sensors on the thickness experiment block 2 may also adopt the above-mentioned means. The levelness of the reflecting plate 3 or the thickness experiment block 2 can be respectively adjusted through the first displacement sensor 8 or the second displacement sensor so as to improve the calibration effect.
The comprehensive calibration measurement device for the ground penetrating radar can be used for measuring relative error of radar wave velocity measurement and measuring radar thickness measurement error.
The comprehensive calibration measurement device for the ground penetrating radar of the embodiment performs a radar wave velocity measurement relative error measurement process, and comprises the following specific steps:
firstly, starting a ground penetrating radar, and electrifying and preheating for not less than 10min;
secondly, the height of the bearing platform 5 is adjusted through the lifting screw rod 6, so that the distance between the ground penetrating radar and the reflecting plate 3 is adjusted, the bottom surface of the ground penetrating radar is parallel to the reflecting plate 3, and the center of the bottom surface of the ground penetrating radar and the center of the reflecting plate 3 are required to be coaxial;
then, in the vertical direction, selecting positions of the reflecting plate 3, which are 200mm, 400mm, 600mm and 800mm away from the metal plate surface, as a measuring point 1, a measuring point 2, a measuring point 3 and a measuring point 4, and sequentially placing ground penetrating radars on the clamp mechanism 4 at each measuring point;
and finally, after measuring for 1min at each measuring point, randomly selecting 5 groups of test data of each measuring point, and calculating the average value of the air radar wave speed of the 5 groups of test data to obtain the radar wave speed value of the current radar at each detecting point.
The comprehensive calibration measurement device for the ground penetrating radar can also be used for measuring the radar thickness measurement error, and the method comprises the following specific steps:
firstly, measuring experimental blocks with different thicknesses by using a laser interferometer, wherein i=1, 2, & gt, n-1, n; each thickness experiment block i is provided with test points which are uniformly distributed, the number of the test points is more than or equal to 20, and the average value of thickness measurement is taken as the standard thickness of the thickness experiment block i;
secondly, arranging the thickness experiment block on a reflecting plate 3 of the comprehensive calibration measuring device of the ground penetrating radar and leveling, then installing the ground penetrating radar, and ensuring that the center of the bottom surface of the ground penetrating radar is coaxial with the center of the reflecting plate 3;
and then selecting a thickness experiment block with an intermediate thickness value from the thickness experiment blocks as a thickness experiment block for radar wave speed calibration, after stable measurement for 1min, randomly taking 10 test data, recording a radar wave double-pass time average value in the current thickness experiment block, calculating the radar wave speed in the thickness experiment block, and calibrating the ground penetrating radar.
d) After the calibrated ground penetrating radar is used for stably measuring the ith thickness experiment block for 1min, 10 test data are randomly taken, the thickness is calculated according to the calibrated wave speed, an average value is taken as a thickness test value of the ith thickness experiment block, the thickness test value is compared with the standard thickness of the current thickness experiment block, and the radar thickness measurement error calibration is completed.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.
Claims (10)
1. A comprehensive calibration measurement device of a ground penetrating radar is characterized by comprising a bearing frame, a thickness experiment block, a ground penetrating radar, a reflecting plate for bearing the thickness experiment block, a clamp mechanism for clamping the ground penetrating radar and a bearing platform for bearing the reflecting plate,
the bearing frame is of a frame structure, four corners of the bearing frame are respectively connected with a vertically arranged lifting screw rod, and the lower end of each lifting screw rod is connected with a group of driving motors; each group of lifting screw rods is in threaded connection with one bearing platform, and the axial lead of each lifting screw rod is perpendicular to the bearing surface of the bearing platform; the four corners of the reflecting plate are respectively provided with a group of lifting supporting mechanisms, the lower part of each group of lifting supporting mechanisms corresponds to a bearing platform, and the reflecting plate is lapped on the bearing platform through the lifting supporting mechanisms at the four corners; the clamp mechanism is positioned right above the reflecting plate and is fixedly connected to the top of the bearing frame.
2. The comprehensive calibration measurement device for the ground penetrating radar according to claim 1, wherein the bearing frame comprises a transverse connecting piece and two groups of vertical supporting pieces, the vertical supporting pieces adopt a rectangular frame with a half opening, the rectangular frame is downward in opening, the two groups of vertical supporting pieces are oppositely arranged, the transverse connecting piece is positioned in the middle of the two groups of vertical supporting pieces, the end parts of the transverse connecting piece are respectively connected to the middle positions of the top sides of the two groups of vertical supporting pieces, and at least two clamp fixing holes are formed in the middle of the transverse connecting piece.
3. The comprehensive calibration measurement device for the ground penetrating radar according to claim 2, wherein a guide rod with the same length is further arranged on the side of each lifting screw rod, the guide rods are parallel to the lifting screw rods, guide holes and threaded holes are formed in the same bearing platform, the guide holes are coaxially sleeved on the guide rods, and the threaded holes are in threaded fit with the lifting screw rods.
4. The comprehensive calibration measurement device for the ground penetrating radar according to claim 2, wherein the clamp mechanism comprises a clamp mounting frame, two screw handrails and two clamping pieces which are oppositely arranged, the clamp mounting frame comprises a transverse connecting plate and vertical fixing plates with two opposite parallel sides, and the vertical fixing plates are vertically connected with the transverse connecting plate; the surface of each vertical fixing plate of the fixture mounting rack is respectively provided with an adjusting nut, the adjusting nuts freely rotate along the circumferential direction relative to the vertical fixing plates, the adjusting nuts on the vertical fixing plates on two sides are positioned on the same axis, each screw rod handrail corresponds to one adjusting nut, and the screw rod handrails are coaxially connected in the adjusting nuts; the two clamping pieces are respectively arranged at the opposite ends of the two screw rod armrests, and the screw rod armrests are enabled to relatively displace relative to the vertical fixing plate in the axial direction by respectively screwing the adjusting nuts, so that the distance between the two clamping pieces is adjusted.
5. The comprehensive calibration measurement device for the ground penetrating radar according to claim 4, wherein fixing bolts are arranged in the middle of the transverse connecting plate of the fixture mounting frame, the number and the positions of the fixing bolts are in one-to-one correspondence with the number and the positions of fixture fixing holes of the transverse connecting piece on the bearing frame, and the fixture mounting frame and the bearing frame are fixed through penetrating and connecting the fixing bolts in the fixture fixing holes.
6. The integrated calibration measurement device for a ground penetrating radar according to any one of claims 1 to 5, wherein a set of universal wheels are respectively arranged at four corners of the lower surface of the reflecting plate, lifting support mechanisms are arranged at four corners of the reflecting plate, and the lifting support mechanisms are used for lifting the reflecting plate and enabling the universal wheels at the bottom of the reflecting plate to be separated from the bearing platform.
7. The ground penetrating radar comprehensive calibration measurement device according to any one of claims 1 to 5, wherein the carrying platform adopts a fan-shaped structure with a central angle of 90 degrees.
8. The ground penetrating radar comprehensive calibration measurement device of any one of claims 1 to 5, further comprising a ground lining plate, wherein the ground lining plate is parallel to the reflecting plate, and the ground lining plate is arranged at the lower end of the lifting screw, and when the bearing platform descends to the bottommost position of the lifting screw, the upper surface of the bearing platform is flush with the upper surface of the ground lining plate.
9. The comprehensive calibration measurement device for the ground penetrating radar according to claim 1, wherein first displacement sensors are respectively arranged at four corners of the upper surface of the thickness experiment block, and the first displacement sensors are used for monitoring displacement distances between the thickness experiment block and the ground penetrating radar.
10. The comprehensive calibration measurement device for the ground penetrating radar according to claim 1, wherein second displacement sensors are respectively arranged at four corners of the upper surface of the reflecting plate, and the second displacement sensors are used for monitoring displacement intervals between the reflecting plate and the ground penetrating radar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310158227.8A CN116047439A (en) | 2023-02-23 | 2023-02-23 | Comprehensive calibration measurement device for ground penetrating radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310158227.8A CN116047439A (en) | 2023-02-23 | 2023-02-23 | Comprehensive calibration measurement device for ground penetrating radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116381821A (en) * | 2023-06-05 | 2023-07-04 | 中国科学院地质与地球物理研究所 | Device and method for indoor verification of detection resolution of ground penetrating radar on complex stratum |
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2023
- 2023-02-23 CN CN202310158227.8A patent/CN116047439A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116381821A (en) * | 2023-06-05 | 2023-07-04 | 中国科学院地质与地球物理研究所 | Device and method for indoor verification of detection resolution of ground penetrating radar on complex stratum |
| CN116381821B (en) * | 2023-06-05 | 2023-08-08 | 中国科学院地质与地球物理研究所 | Device and method for indoor verification of detection resolution of ground penetrating radar on complex stratum |
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