CN212008912U - Vibration angle reflector for calibrating radar monitoring precision of bridge - Google Patents
Vibration angle reflector for calibrating radar monitoring precision of bridge Download PDFInfo
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- CN212008912U CN212008912U CN201922372080.4U CN201922372080U CN212008912U CN 212008912 U CN212008912 U CN 212008912U CN 201922372080 U CN201922372080 U CN 201922372080U CN 212008912 U CN212008912 U CN 212008912U
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- vibration
- workbench
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- flat plate
- bridge
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Abstract
The vibration angle reflector comprises a workbench, a vibration flat plate is arranged above the workbench, a plurality of pressure springs are arranged on the outer side between the vibration flat plate and the workbench along the vertical direction, the top ends of the pressure springs are respectively propped against the lower end face of the vibration flat plate, the bottom ends of the pressure springs are respectively propped against the upper end face of the workbench, an electromagnetic transmission device is arranged in the middle between the vibration flat plate and the workbench and comprises an electromagnetic coil, an armature and an iron core, the upper part of the armature is fixedly connected with the vibration flat plate, and the electromagnetic coil and the iron core are fixedly arranged on the vibration flat plate; the top of the vibrating flat plate is provided with an angle reflector through a supporting frame. The vibration corner reflector can simulate bridge target displacement, monitor the vibration state of the corner reflector in real time and provide guarantee for researchers to perform radar data contrastive analysis.
Description
Technical Field
The utility model relates to a vibration corner reflector for bridge radar monitoring precision is markd.
Background
Various existing bridge monitoring means such as manual arrangement of sensors, dynamometers, level gauges and the like on a bridge belong to contact point type and discontinuous type measurement, are easily influenced by the environment, and cannot meet the current situation of bridge health diagnosis, rapidness, no damage and full coverage requirements. Therefore, researchers begin to explore that the radar interferometry which is successfully applied in the mine and homeland industries is applied to deformation monitoring of bridge load tests, and a high-resolution and high-precision bridge radar monitoring system special for bridge vibration deformation is formed, so that the bridge safety monitoring requirement is met, the safe passing of various vehicles such as highways, railways and subways on bridges is ensured, and the development direction of the bridge monitoring technology is led.
At present, the monitoring precision of a radar system is verified by manually arranging passive reflector calibration equipment in a target area. The bridge radar monitoring precision calibration experiment requires that the corner reflector can roughly restore the vibration condition when a vehicle passes through a bridge, the corner reflecting surface is opposite to the sight direction of the radar, the strong reflection point can be accurately identified in a radar image, and researchers can timely acquire real and credible vibration data and compare the vibration data with the radar data, so that the monitoring precision of the bridge radar is verified.
The bridge radar belongs to a microwave remote sensing technology, is not influenced by environmental factors such as rain, snow and the like and illumination conditions, and can continuously work all day long and all weather. Based on above-mentioned bridge radar monitoring accuracy demarcation experiment requirement, the utility model relates to a vibration corner reflector of bridge target displacement can simulate facilitates for the researcher carries out data contrastive analysis.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can simulate bridge target displacement, real-time supervision corner reflector self vibration state carries out the vibration corner reflector that is used for bridge radar monitoring precision to mark that radar data contrastive analysis provides the guarantee for the researcher.
The utility model discloses a vibration corner reflector for calibration of bridge radar monitoring precision, comprises a workbench, the top of workstation is equipped with the vibrations flat board, the dull and stereotyped face of vibrations is located the horizontal direction, the outside between vibrations flat board and the workstation is equipped with a plurality of pressure springs along vertical direction, the top of a plurality of pressure springs pushes up respectively on the lower terminal surface of vibrations flat board, the bottom of a plurality of pressure springs pushes up respectively on the up end of workstation, the middle part between vibrations flat board and the workstation is equipped with electromagnetic drive device, electromagnetic drive device includes solenoid, armature and iron core, the upper portion of armature is fixed with the vibrations flat board and is linked to each other, solenoid and iron core installation are fixed on the vibrations flat board;
the top of the vibrating flat plate is provided with an angle reflector through a support frame, the angle reflector is formed by splicing 3 isosceles triangular metal plates into a regular triangular pyramid, the plane where the three bottom edges of the regular triangular pyramid are located forms the mouth surface of the angle reflector, and the mouth surface of the angle reflector is located in the vertical direction;
wave-absorbing materials are adhered to the surfaces of the workbench, the support frame and the vibration flat plate.
Preferably, the workbench is a rectangular body, and four corners of the bottom end of the workbench are respectively provided with supporting legs with adjustable heights.
Preferably, the vibration flat plate is a rectangular body, the number of the pressure springs is 4, and the top ends of the 4 pressure springs respectively abut against the corner of the vibration flat plate.
Preferably, the middle parts of the left side and the right side of the workbench are respectively provided with a workbench handle, and the corner reflector is made of 3 isosceles triangle-shaped aluminum alloy plates or galvanized steel plates.
Preferably, the support frame includes the base, the front end at base top passes through the hinge and links to each other with the front end installation of returning face plate, the rear end of returning face plate links to each other with adjusting screw's top is articulated, adjusting screw's lower part is passed and is adopted two nuts to fix on the returning face plate after being located the through-hole on returning face plate rear portion face, the middle part of returning face plate rear end is fixed with down the mount pad, cartridge is fixed with the cross axle on the mount pad down, the axis of cross axle is located left right horizontal direction, adopt clearance fit cover to overlap on the cross axle to be equipped with the mount pad, it is equipped with the jackscrew to go up the mount pad top spin, the inner end top of jackscrew is on the periphery of cross axle, it.
The utility model discloses a vibration corner reflector for bridge radar monitoring accuracy is markd when using, usable electromagnetic transmission lets the dull and stereotyped vibration that produces of vibrations, and the regulation and control lets in electromagnetic transmission's solenoid's current frequency, and is just changeable dull and stereotyped vibration frequency of vibrations, and then can let the corner reflector be in different displacement states to simulation bridge target displacement. Therefore, the utility model discloses a vibration corner reflector for bridge radar monitoring accuracy is markd has the displacement of simulation bridge target, monitors corner reflector self vibration state in real time, provides the characteristics of guarantee for the researcher carries out radar data contrastive analysis.
The present invention will be described in detail with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 is a front view of a schematic structural diagram of a vibration corner reflector for calibrating radar monitoring precision of a bridge according to the present invention;
fig. 2 is a side view of fig. 1.
Detailed Description
As shown in fig. 1 and fig. 2, the utility model discloses a vibration corner reflector for calibration of bridge radar monitoring precision, including workstation 1, workstation 1's top is equipped with vibrations flat board 2, vibrations flat board 2's face is located the horizontal direction, the outside between vibrations flat board 2 and the workstation 1 is equipped with a plurality of pressure springs 3 along vertical direction, the top of a plurality of pressure springs 3 pushes up respectively on vibrations flat board 2's lower terminal surface, the bottom of a plurality of pressure springs 3 pushes up respectively on workstation 1's up end, the middle part between vibrations flat board 2 and the workstation 1 is equipped with electromagnetic drive 4, electromagnetic drive 4 includes solenoid 401, armature 402 and iron core 403, the upper portion of armature 402 is fixed with vibrations flat board 2 and is connected, solenoid 401 and iron core 403 are installed and are fixed on vibrations flat board 2;
the top of the vibrating flat plate 2 is provided with an angle reflector 6 through a support frame, the angle reflector 6 is formed by splicing 3 isosceles triangular metal plates into a regular triangular pyramid, the plane where three bottom edges 5 of the regular triangular pyramid are located forms the opening surface of the angle reflector 6, and the opening surface of the angle reflector 6 is located in the vertical direction;
wave-absorbing materials are adhered to the surfaces of the workbench 1, the support frame and the vibration flat plate 2.
As a further improvement of the utility model, the workbench 1 is a rectangular body, and the four corners of the bottom end of the workbench 1 are respectively provided with the supporting legs 7 with adjustable height.
As a further improvement, the above-mentioned dull and stereotyped 2 that shakes is the cuboid, and the quantity of pressure spring 3 is 4, and the top of 4 pressure springs 3 pushes up respectively in the bight of shaking dull and stereotyped 2.
As a further improvement of the utility model, the middle parts of the left side and the right side of the workbench 1 are respectively provided with a workbench handle 14, and the corner reflector 6 is made of 3 isosceles triangle aluminum alloy plates or galvanized steel plates.
As a further improvement of the utility model, above-mentioned support frame includes base 8, the front end at 8 tops of base passes through the hinge and links to each other with the front end installation of returning face plate 9, the rear end of returning face plate 9 links to each other with adjusting screw 10's top is articulated, adjusting screw 10's lower part is passed and is adopted two nuts to fix on returning face plate 9 after being located the through-hole on returning face plate 9 rear portion face, the middle part of returning face plate 9 rear end is fixed with down mount pad 11, cartridge is fixed with cross axle 12 on the mount pad 11 down, horizontal direction about the axis of cross axle 12 is located, adopt clearance fit cover to overlap on cross axle 12 to be equipped with mount pad 13, it is equipped with the jackscrew to go up mount pad 13 top spin, the inner end top of jackscrew is on cross axle 12's periphery, it links to go up the middle.
The corner reflector 6 is also called a radar reflector, and is a radar wave reflector with different specifications, which is made of metal plates according to different purposes. When the radar electromagnetic wave is scanned to the angle for reflection, the electromagnetic wave can be refracted and amplified on the metal angle to generate a strong echo signal, and a strong echo target appears on the screen of the radar.
The corner reflector 6 is made of 3 isosceles triangular aluminum alloy plates or steel plates, and when the incident angle changes, the corner reflector with the triangular surface can obtain larger echo power in a larger angle range.
The utility model discloses a vibration corner reflector for bridge radar monitoring accuracy is markd when using, usable electromagnetic drive device 4 lets vibrations 2 dull and stereotyped production vibrations, and the regulation and control lets in electromagnetic drive device 4's solenoid 401's current frequency, and 2 vibration frequency of vibrations dull and stereotyped just can change, and then can let corner reflector 6 be in different displacement state to simulation bridge target displacement. Therefore, the utility model discloses a vibration corner reflector for bridge radar monitoring accuracy is markd has the displacement of simulation bridge target, monitors corner reflector self vibration state in real time, provides the characteristics of guarantee for the researcher carries out radar data contrastive analysis.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art are intended to fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. A vibration corner reflector for bridge radar monitoring accuracy is markd, characterized by: the vibration plate comprises a workbench (1), a vibration plate (2) is arranged above the workbench (1), the surface of the vibration plate (2) is located in the horizontal direction, a plurality of pressure springs (3) are arranged on the outer side between the vibration plate (2) and the workbench (1) along the vertical direction, the top ends of the pressure springs (3) are respectively propped against the lower end face of the vibration plate (2), the bottom ends of the pressure springs (3) are respectively propped against the upper end face of the workbench (1), an electromagnetic transmission device (4) is arranged in the middle between the vibration plate (2) and the workbench (1), the electromagnetic transmission device (4) comprises an electromagnetic coil (401), an armature (402) and an iron core (403), the upper part of the armature (402) is fixedly connected with the vibration plate (2), and the electromagnetic coil (401) and the iron core (403) are fixedly arranged on the vibration plate (2);
the top of the vibrating flat plate (2) is provided with an angle reflector (6) through a support frame, the angle reflector (6) is formed by splicing 3 isosceles triangular metal plates into a regular triangular pyramid, the plane where three bottom edges (5) of the regular triangular pyramid are located forms an opening surface of the angle reflector (6), and the opening surface of the angle reflector (6) is located in the vertical direction;
the surfaces of the workbench (1), the support frame and the vibration flat plate (2) are coated with wave-absorbing materials.
2. The oscillating corner reflector for bridge radar monitoring accuracy calibration of claim 1, wherein: the workbench (1) is a rectangular body, and four corners of the bottom end of the workbench (1) are respectively provided with supporting legs (7) with adjustable heights.
3. The oscillating corner reflector for bridge radar monitoring accuracy calibration of claim 2, wherein: the vibration flat plate (2) is a rectangular body, the number of the pressure springs (3) is 4, and the top ends of the 4 pressure springs (3) respectively push against the corner of the vibration flat plate (2).
4. The oscillating corner reflector for bridge radar monitoring accuracy calibration of claim 3, wherein: the middle parts of the left side and the right side of the workbench (1) are respectively provided with a workbench handle (14), and the corner reflector (6) is made of 3 isosceles triangle-shaped aluminum alloy plates or galvanized steel plates.
5. The oscillating corner reflector for bridge radar monitoring accuracy calibration according to any one of claims 1 to 4, characterized in that: the support frame includes base (8), the front end at base (8) top is passed through the hinge and is linked to each other with the front end installation of returning face plate (9), the rear end of returning face plate (9) links to each other with the top of adjusting screw (10) is articulated, the lower part of adjusting screw (10) is passed and is adopted two nuts to fix on returning face plate (9) behind the through-hole that is located returning face plate (9) rear portion face, the middle part of returning face plate (9) rear end is fixed with down mount pad (11), cartridge is fixed with cross axle (12) on lower mount pad (11), the axis of cross axle (12) is located horizontal direction about, adopt clearance fit cover to overlap on cross axle (12) and be equipped with mount pad (13), it is equipped with the jackscrew to go up mount pad (13) top spin, the inner end top of jackscrew is on the periphery of cross axle (12), it is fixed continuous with the middle part of corner reflector (6) rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922372080.4U CN212008912U (en) | 2019-12-25 | 2019-12-25 | Vibration angle reflector for calibrating radar monitoring precision of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922372080.4U CN212008912U (en) | 2019-12-25 | 2019-12-25 | Vibration angle reflector for calibrating radar monitoring precision of bridge |
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| Publication Number | Publication Date |
|---|---|
| CN212008912U true CN212008912U (en) | 2020-11-24 |
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| CN201922372080.4U Expired - Fee Related CN212008912U (en) | 2019-12-25 | 2019-12-25 | Vibration angle reflector for calibrating radar monitoring precision of bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234828A (en) * | 2021-11-29 | 2022-03-25 | 北京航空航天大学 | High-temperature strain measuring device |
-
2019
- 2019-12-25 CN CN201922372080.4U patent/CN212008912U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234828A (en) * | 2021-11-29 | 2022-03-25 | 北京航空航天大学 | High-temperature strain measuring device |
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