Calibration device for geological radar detection system
By designing a calibration device for a ground-penetrating radar detection system that is easy to disassemble and store, the problem of difficult operation in the calibration process of the ground-penetrating radar detection system is solved, and efficient calibration and data acquisition of the vehicle-mounted detection system are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-03-17
AI Technical Summary
The existing ground-penetrating radar detection system has a difficult calibration process and the calibration equipment is inconvenient to carry, making it difficult to meet the calibration requirements of vehicle-mounted ground-penetrating radar detection systems before periodic testing.
A calibration device for a ground-penetrating radar detection system was designed, including a support frame and calibration components, which are connected to each other by bolts and plugs, making them easy to disassemble and store. They can be used on a detection vehicle. The calibration components are placed at a height close to the ballast interface of the track, which improves the calibration efficiency.
It enables convenient calibration of the ground-penetrating radar detection system, meets the periodic pre-detection calibration requirements of vehicle-mounted detection systems, and improves the efficiency of calibration and the accuracy of data acquisition.
Smart Images
Figure CN224005246U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radar calibration technology, specifically a calibration device for a ground-penetrating radar detection system. Background Technology
[0002] Currently, major overhauls of railway lines in my country primarily employ a periodic maintenance model. However, the condition of railway lines across the network exhibits significant regional and temporal characteristics. With the expansion of the railway network and the scarcity of maintenance resources, condition-based maintenance is imperative. The severity and distribution characteristics of hidden structural defects under the track, such as track bed contamination, uneven thickness, and subgrade mud pumping, are crucial decision-making factors for condition-based maintenance. Practice has shown that ground-penetrating radar (GPR) technology is a vital technique for detecting hidden structural defects under the track. This technology offers the advantage of constant-velocity detection within clearance limits and provides the foundation for conducting periodic inspections across the entire railway network. Vehicle-mounted GPR systems require calibration before periodic inspections, but existing technologies suffer from difficulties in the calibration process and the inconvenience of carrying calibration equipment. Utility Model Content
[0003] To address the operational difficulties in the calibration process of existing ground-penetrating radar (GPR) detection systems, this invention provides a GPR detection system calibration device. This device features a simple structure and convenient operation, allowing for easy storage and use on a testing vehicle. It enables calibration of the GPR detection line system during vehicle inspection. This solves the current problem of difficult system calibration and meets the calibration requirements of vehicle-mounted GPR detection systems before periodic testing, thereby further satisfying data acquisition requirements.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A calibration device for a ground-penetrating radar detection system includes a support frame and a calibration assembly. The support frame comprises a front frame rod and a rear frame rod arranged at intervals. The front frame rod includes a front left rod segment, a front left support, a front middle rod segment, a front right support, and a front right rod segment connected sequentially from left to right. The rear frame rod includes a rear left rod segment, a rear left support, a rear middle rod segment, a rear right support, and a rear right rod segment connected sequentially from left to right. The calibration assembly includes a left calibration plate, a middle calibration plate, and a right calibration plate arranged sequentially from left to right. The left, middle, and right calibration plates are all horizontal. The left calibration plate is fixed to the front left and rear left pole sections, the middle calibration plate is fixed to the front middle and rear middle pole sections, and the right calibration plate is fixed to the front right and rear right pole sections. The front left, rear left, front right, and rear right supports are all connected with insulating layers. The front left and rear left supports can be insulatedly overlapped with the left side rail of the railway track, and the front right and rear right supports can be insulatedly overlapped with the right side rail of the railway track.
[0006] The front left support has an inverted U-shaped structure. The front left support contains the left horizontal section, the left vertical section, the upper horizontal section, the right vertical section, and the right horizontal section of the left support connected from left to right. The left vertical section, the upper horizontal section, and the right vertical section form a left groove, which can overlap with the left side rail of the railway track.
[0007] The right end of the front left rod segment is matched and inserted with the left transverse segment of the left support of the front left bearing, and the left end of the front middle rod segment is matched and inserted with the right transverse segment of the left support of the front left bearing. Both the front left rod segment and the front middle rod segment extend in the left and right directions.
[0008] The front left support has a rectangular cross-section. Both the front left and front middle rod sections are rectangular metal tubes. The length of the front left rod section is less than the length of the front middle rod section. The upper surfaces of the front left and front middle rod sections are located in the same horizontal plane.
[0009] The front left and front right segments are symmetrical and mirror images of each other, as are the front left and front right supports.
[0010] The connection method between the front left rod segment and the front left support is the same as the connection method between the front right rod segment and the front right support. The connection method between the front middle rod segment and the front left support is the same as the connection method between the front middle rod segment and the front right support.
[0011] The front and rear calibration rods are symmetrical and mirror images of each other. The upper surfaces of the left, middle, and right calibration plates are located in the same horizontal plane.
[0012] The left calibration plate consists of an upper plate and a lower rib connected vertically. The upper plate is parallel to the horizontal plane, and the lower rib is upright. The lower rib extends in the front-to-back direction. A front left insertion port is provided on the front left segment, and a rear left insertion port is provided on the rear left segment. The front end of the lower rib is matched and inserted into the front left insertion port, and the front end of the lower rib is matched and inserted into the rear left insertion port.
[0013] The left and right calibration plates are symmetrical and mirror images of each other. The front left and front right pole segments are symmetrical and mirror images of each other. The rear left and rear right pole segments are symmetrical and mirror images of each other. The connection method between the left calibration plate and the front left and rear left pole segments is the same as the connection method between the right calibration plate and the front right and rear right pole segments.
[0014] The calibration plate contains two central calibration sub-plates connected on the left and right. The two central calibration sub-plates are symmetrical and mirror images of each other. The left calibration plate and the central calibration sub-plate are also symmetrical and mirror images of each other. The connection method between the left calibration plate and the front left pole segment and the rear left pole segment is the same as the connection method between the central calibration sub-plate and the front middle pole segment and the rear middle pole segment.
[0015] The beneficial effects of this utility model are:
[0016] 1. The components are connected to each other by bolts and plugs, which makes them easy to disassemble and store. They can be stored on a detection vehicle equipped with a ground-penetrating radar detection system.
[0017] 2. The calibration components are placed at a height similar to the ballast interface of the track, which closely matches the actual testing environment and improves the efficiency of calibration. Attached Figure Description
[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0019] Figure 1 This is a schematic diagram of the calibration device for the ground-penetrating radar detection system described in this utility model.
[0020] Figure 2 This is an exploded view of the calibration device for the ground-penetrating radar detection system described in this utility model.
[0021] Figure 3 This is a schematic diagram of the support frame.
[0022] Figure 4 This is a schematic diagram of the front left support.
[0023] Figure 5 This is a schematic diagram of the left calibration plate.
[0024] Figure 6 This is a schematic diagram showing the working state of the calibration device of the ground-penetrating radar detection system described in this utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Support frame; 2. Calibration components; 3. Railway track; 4. Inspection vehicle;
[0027] 11. Front frame pole; 12. Rear frame pole;
[0028] 21. Left calibration plate; 22. Middle calibration plate; 23. Right calibration plate;
[0029] 31. Left rail; 32. Right rail;
[0030] 41. Left radar; 42. Middle radar; 43. Right radar;
[0031] 111. Front left shaft segment; 112. Front left bearing; 113. Front middle shaft segment; 114. Front right bearing; 115. Front right shaft segment;
[0032] 121. Rear left shaft segment; 122. Rear left bearing; 123. Rear middle shaft segment; 124. Rear right bearing; 125. Rear right shaft segment;
[0033] 211. Upper plate; 212. Lower rib;
[0034] 221. Central calibration plate;
[0035] 1111, Front left socket; 1211, Rear left socket;
[0036] 1121. Left horizontal section of left support; 1122. Left vertical section of left support; 1123. Upper horizontal section of left support; 1124. Right vertical section of left support; 1125. Right horizontal section of left support; 1126. Left groove. Detailed Implementation
[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0038] For ease of understanding and description, the following description of this utility model uses absolute positional relationships. Unless otherwise specified, the directional word "above" indicates... Figure 6 The direction above, the directional word "down" indicates Figure 6 The lower side of the middle, the directional word "left" indicates Figure 6 The left side of the direction, the directional word "right" indicates Figure 6 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 6 The direction of the paper and pointing inwards from the paper; the directional word "back" indicates perpendicular to the paper. Figure 6 The orientation of the paper is pointed outwards from the paper surface. This invention is described from the perspective of a reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the dimensions and angles of the components, those skilled in the art can determine them specifically based on actual needs or a limited number of experiments.
[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown in the figure, a calibration device for a ground-penetrating radar detection system according to an embodiment of the present invention includes a support frame 1 and a calibration assembly 2. The support frame 1 includes a front frame rod 11 and a rear frame rod 12 arranged at intervals. The front frame rod 11 includes a front left rod segment 111, a front left support 112, a front middle rod segment 113, a front right support 114, and a front right rod segment 115 connected sequentially from left to right. The rear frame rod 12 includes a rear left rod segment 121, a rear left support 122, a rear middle rod segment 123, a rear right support 124, and a rear right rod segment 125 connected sequentially from left to right. The calibration assembly 2 includes a left calibration plate 21, a middle calibration plate 22, and a right calibration plate arranged sequentially from left to right. 23. The left calibration plate 21, the middle calibration plate 22, and the right calibration plate 23 are all in a horizontal state. The left calibration plate 21 is fixed on the front left pole section 111 and the rear left pole section 121. The middle calibration plate 22 is fixed on the front middle pole section 113 and the rear middle pole section 123. The right calibration plate 23 is fixed on the front right pole section 115 and the rear right pole section 125. The front left support 112, the rear left support 122, the front right support 114, and the rear right support 124 are all connected with an insulating layer. The front left support 112 and the rear left support 122 can be insulatedly overlapped with the left rail 31 of the railway track 3. The front right support 114 and the rear right support 124 can be insulatedly overlapped with the right rail 32 of the railway track 3.
[0040] like Figure 4 As shown, the front left support 112 is roughly an inverted U-shaped structure (or it can also be called a Z-shaped structure). The front left support 112 contains the left horizontal section 1121, the left vertical section 1122, the upper horizontal section 1123, the right vertical section 1124, and the right horizontal section 1125 of the left support connected from left to right. The left horizontal section 1121, the upper horizontal section 1123, and the right horizontal section 1125 of the left support all extend in the left-right direction. The left vertical section 1122 and the right vertical section 1124 of the left support all extend in the up-down direction. The left vertical section 1122, the upper horizontal section 1123, and the right vertical section 1124 of the left support form a left groove 1126. The opening of the left groove 1126 faces downward. The left groove 1126 can overlap with the left rail 31 of the railway track 3 vertically.
[0041] The left horizontal segment 1121 and the right horizontal segment 1125 of the left support are symmetrical and mirror images of each other. The left vertical segment 1122 and the right vertical segment 1124 of the left support are symmetrical and mirror images of each other. The right end of the front left rod segment 111 is matched and inserted with the left horizontal segment 1121 of the left support of the front left support 112. The left end of the front middle rod segment 113 is matched and inserted with the right horizontal segment 1125 of the left support of the front left support 112. Both the front left rod segment 111 and the front middle rod segment 113 extend in the left-right direction.
[0042] like Figures 1 to 3As shown, the cross-sections of the front left rod segment 111, the front middle rod segment 113, and the front left support 112 are all rectangular. The front left rod segment 111 and the front middle rod segment 113 are both metal square tubes. The length of the front left rod segment 111 is less than the length of the front middle rod segment 113. The upper surfaces of the front left rod segment 111 and the front middle rod segment 113 are located in the same horizontal plane.
[0043] The front left segment 111 and the front right segment 115 are symmetrical and mirror images of each other. The front left support 112 and the front right support 114 are also symmetrical and mirror images of each other. The connection method between the front left segment 111 and the front left support 112 is the same as the connection method between the front right segment 115 and the front right support 114 (mirrors of each other). The connection method between the front middle segment 113 and the front left support 112 is the same as the connection method between the front middle segment 113 and the front right support 114 (mirrors of each other).
[0044] like Figures 1 to 3 As shown, the front frame rod 11 and the rear frame rod 12 are symmetrical and mirror images of each other. The front frame rod 11 and the rear frame rod 12 are the same and can be interchanged. The front left rod segment 111, the front right rod segment 115, the rear left rod segment 121 and the rear right rod segment 125 are the same and can be interchanged. The front middle rod segment 113 and the rear middle rod segment 123 are the same and can be interchanged. The front left support 112, the front right support 114, the rear left support 122 and the rear right support 124 are the same and can be interchanged.
[0045] The left calibration plate 21, the middle calibration plate 22 and the right calibration plate 23 can all be made of aluminum plates. The left calibration plate 21, the middle calibration plate 22 and the right calibration plate 23 are arranged alternately from left to right. The upper surface of the left calibration plate 21, the upper surface of the middle calibration plate 22 and the upper surface of the right calibration plate 23 are located in the same horizontal plane.
[0046] like Figure 3 and Figure 5 As shown, the left calibration plate 21 includes an upper plate 211 and a lower rib 212 connected vertically. The upper plate 211 is parallel to the horizontal plane, and the lower rib 212 is in an upright state, extending in the front-to-back direction. The upper surface of the front left rod segment 111 is provided with a front left insertion port 1111, and the upper surface of the rear left rod segment 121 is provided with a rear left insertion port 1211. The front end of the lower rib 212 is matched and inserted into the front left insertion port 1111, and the front end of the lower rib 212 is matched and inserted into the rear left insertion port 1211. The upper plate 211 is stacked and connected to the front left rod segment 111, and the upper plate 211 is stacked and connected to the rear left rod segment 121.
[0047] The left calibration plate 21 and the right calibration plate 23 are symmetrical and mirror images of each other. The front left link segment 111 and the front right link segment 115 are symmetrical and mirror images of each other. The rear left link segment 121 and the rear right link segment 125 are symmetrical and mirror images of each other. The connection method between the left calibration plate 21 and the front left link segment 111 and the rear left link segment 121 is the same as the connection method between the right calibration plate 23 and the front right link segment 115 and the rear right link segment 125 (mirrors of each other).
[0048] like Figures 1 to 3 As shown, the calibration plate 22 contains two central calibration sub-plates 221 connected from the left and right. The two central calibration sub-plates 221 are symmetrical and mirror images of each other. The left calibration plate 21 and the central calibration sub-plate 221 are also symmetrical and mirror images of each other. The connection method between the left calibration plate 21 and the front left rod segment 111 and the rear left rod segment 121 is the same as the connection method between the central calibration sub-plate 221 and the front middle rod segment 113 and the rear middle rod segment 123. That is, the central calibration sub-plate 221 also contains an upper plate and a lower rib connected vertically. The front middle rod segment 113 and the rear middle rod segment 123 are both provided with upper insertion ports, and the lower ribs are matched and inserted into the upper insertion ports. The left calibration plate 21, the central calibration sub-plate 221 and the right calibration plate 23 are the same and can be interchanged.
[0049] The upper surfaces of the upper plate 211 of the left calibration plate 21, the upper plate of the upper plate of the middle calibration plate 221, and the upper plate of the upper plate of the right calibration plate 23 are all located in the same horizontal plane. In the calibration device of the ground-penetrating radar detection system, adjacent components can be fixed together by screws.
[0050] The working process of the calibration device for the ground-penetrating radar detection system is described below.
[0051] Typically, the calibration device for the ground-penetrating radar detection system is disassembled into components for easy storage. When the inspection vehicle 4 containing the ground-penetrating radar detection system is inspected upon entering the warehouse, the components of the calibration device are removed from the inspection vehicle 4 and assembled to form the ground-penetrating radar detection system calibration device.
[0052] like Figure 6 As shown, the front left support 112 and rear left support 122 of the ground-penetrating radar detection system calibration device are inserted vertically and vertically into the left rail 31 of the railway track 3, and the front right support 114 and rear right support 124 are inserted vertically and vertically into the right rail 32 of the railway track 3. The ground-penetrating radar detection system calibration device is located on the railway track 3. Insulating pads are provided on the lower surfaces of the front left support 112, the rear left support 122, the front right support 114, and the rear right support 124.
[0053] The insulating pad connected to the front left support 112 is located between the front left support 112 and the left rail 31 of the railway track 3. The insulating pad connected to the rear left support 122 is located between the rear left support 122 and the left rail 31 of the railway track 3. The insulating pad connected to the front right support 114 is located between the front right support 114 and the right rail 32 of the railway track 3. The insulating pad connected to the rear right support 124 is located between the rear right support 124 and the right rail 32 of the railway track 3.
[0054] The calibration component 2 is placed at a height close to the ballast interface of the railway track, which closely matches the actual detection environment. That is, when the ground-penetrating radar detection system calibration device is installed on the railway track 3, the upper surfaces of the left calibration plate 21, the middle calibration plate 22, and the right calibration plate 23 are flush with the actual ballast interface of the railway track 3.
[0055] The ground-penetrating radar of the detection vehicle 4 includes a left radar 41, a middle radar 42, and a right radar 43. These radars correspond vertically to the left calibration plate 21, the middle calibration plate 22, and the right calibration plate 23, respectively. The left radar 41 measures the left calibration plate 21, the middle radar 42 measures the middle calibration plate 22, and the right radar 43 measures the right calibration plate 23. The actual distance between the ground-penetrating radar and the calibration assembly 2 can be measured using existing measuring tools. By comparing and adjusting the measured values of the ground-penetrating radar with the actual distance, the ground-penetrating radar can be calibrated.
[0056] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within the scope of this utility model. Furthermore, the technical features, technical features and technical solutions, and technical solutions in this utility model can be freely combined and used.
Claims
1. A calibration device for a ground penetrating radar detection system, characterized in that, The ground penetrating radar detection system calibration device comprises a support frame (1) and a calibration assembly (2); The support frame (1) comprises front and rear frame rods (11) and (12) arranged at intervals, the front frame rod (11) comprises front left, middle and right rod sections (111, 113 and 115) and left and right supports (112 and 114) connected in sequence from left to right, and the rear frame rod (12) comprises rear left, middle and right rod sections (121, 123 and 125) and left and right supports (122 and 124) connected in sequence from left to right; The calibration assembly (2) comprises left, middle and right calibration plates (21, 22 and 23) arranged in sequence from left to right, and the left, middle and right calibration plates (21, 22 and 23) are all in a horizontal state, the left calibration plate (21) is fixed on the front left and rear left rod sections (111 and 121), the middle calibration plate (22) is fixed on the front middle and rear middle rod sections (113 and 123), and the right calibration plate (23) is fixed on the front right and rear right rod sections (115 and 125); The left and right supports (112 and 122) can be insulated and lapped with the left rail (31) of the railway track (3), and the left and right supports (114 and 124) can be insulated and lapped with the right rail (32) of the railway track (3).
2. The ground penetrating radar system calibration device of claim 1, wherein, The left support left and right vertical sections (1122 and 1124) and the left support upper horizontal section (1123) surround a left groove (1126), and the left groove (1126) can be inserted into the left rail (31) of the railway track (3).
3. The GPR system calibration device of claim 2, wherein, The right end of the front left rod section (111) is matched and inserted into the left support left horizontal section (1121) of the front left support (112), the left end of the front middle rod section (113) is matched and inserted into the left support right horizontal section (1125) of the front left support (112), and the front left and middle rod sections (111 and 113) extend along the left-right direction.
4. The GPR system calibration device of claim 3, wherein, The front left support (112) has a rectangular cross section, the front left and middle rod sections (111 and 113) are rectangular metal pipes, the length of the front left rod section (111) is less than that of the front middle rod section (113), and the upper surfaces of the front left and middle rod sections (111 and 113) are located in the same horizontal plane.
5. The ground penetrating radar system calibration device of claim 1, wherein, The front left and right rod sections (111 and 115) are left-right symmetrical and mirror images of each other, and the front left and right supports (112 and 114) are left-right symmetrical and mirror images of each other.
6. The GPR system calibration device of claim 5, wherein, The connection mode of the front left rod segment (111) and the front left support (112) is the same as the connection mode of the front right rod segment (115) and the front right support (114), and the connection mode of the front middle rod segment (113) and the front left support (112) is the same as the connection mode of the front middle rod segment (113) and the front right support (114).
7. The ground penetrating radar system calibration device of claim 1, wherein, The front frame rod (11) and the rear frame rod (12) are symmetrical and mirror images of each other, and the upper surfaces of the left calibration plate (21), the middle calibration plate (22) and the right calibration plate (23) are located in the same horizontal plane.
8. The ground penetrating radar system calibration device of claim 1, wherein, The left calibration plate (21) comprises an upper flat plate (211) and a lower rib (212) connected in series, the upper flat plate (211) is parallel to the horizontal plane, and the lower rib (212) is in an upright state and extends in the front-rear direction, the front left rod segment (111) is provided with a front left socket (1111), the rear left rod segment (121) is provided with a rear left socket (1211), the front end of the lower rib (212) is matched and inserted with the front left socket (1111), and the front end of the lower rib (212) is matched and inserted with the rear left socket (1211).
9. The GPR system calibration device of claim 8, wherein, The left calibration plate (21) and the right calibration plate (23) are symmetrical and mirror images of each other, the front left rod segment (111) and the front right rod segment (115) are symmetrical and mirror images of each other, the rear left rod segment (121) and the rear right rod segment (125) are symmetrical and mirror images of each other, and the connection mode of the left calibration plate (21) and the front left rod segment (111) and the rear left rod segment (121) is the same as the connection mode of the right calibration plate (23) and the front right rod segment (115) and the rear right rod segment (125).
10. The ground penetrating radar system calibration device of claim 8, wherein, The middle calibration plate (22) comprises two middle calibration sub-plates (221) connected in series, the two middle calibration sub-plates (221) are symmetrical and mirror images of each other, the left calibration plate (21) and the middle calibration sub-plate (221) are symmetrical and mirror images of each other, and the connection mode of the left calibration plate (21) and the front left rod segment (111) and the rear left rod segment (121) is the same as the connection mode of the middle calibration sub-plate (221) and the front middle rod segment (113) and the rear middle rod segment (123).