Radar northern angle calibration tool capable of being stored
By designing a storable radar north angle calibration tooling and utilizing the sliding and screw fixing structure of the main cross arm and the extension arm, the problem of poor portability during transportation and carrying is solved, and stability during calibration and convenience during carrying are achieved.
Patent Information
- Application Number
- CN202422595053.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing radar north angle calibration tooling has the problem of poor portability during transportation or carrying, especially the antenna baseline length is difficult to meet the index requirements, resulting in inconvenience in carrying.
A storable radar north angle calibration tooling was designed. The sliding and screw fixing structure of the main cross arm and the extension arm enables the tooling to be unfolded and folded, which facilitates meeting the baseline distance requirements during calibration and meeting the size requirements when carrying.
The stability and accuracy requirements of the tooling during calibration are achieved, while the convenience of carrying meets the portability requirements and adapts to switching between different usage states.
Smart Images
Figure CN223401038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of millimeter wave radar north angle calibration, in particular to a stowable radar north angle calibration tool. Background Art
[0002] Currently, radar northing angle calibration typically requires a dual-GNSS antenna positioning and orientation system. This system consists of two GNSS antennas and an RTK motherboard system. The two GNSS antennas are fixed in a straight line at equal heights on either side of the radar antenna array. The primary and secondary antennas form a dual-antenna system that simultaneously receives signals from GNSS satellites. Differential analysis of the device's secondary antenna with the primary antenna determines the relative position of the secondary antenna relative to the primary antenna, and thus the heading angle (northing angle) can be calculated. The radar's northing angle effectively improves the radar's target indication and positioning capabilities. For dual-GNSS antenna orientation accuracy, the greater the distance between the two antennas (commonly known as the baseline), the higher the accuracy.
[0003] For the radar north angle calibration tooling, the portability of the tooling and ensuring that the antenna baseline length meets the index requirements must be considered during transportation or carrying. If the tooling is too long and too heavy during carrying or transportation, it will become difficult to carry. Utility Model Content
[0004] In order to solve the above technical problems, an embodiment of the utility model provides a storable radar north angle calibration tool, which can be effectively and conveniently unfolded or storable, making it easy to switch between the use state and the carrying state.
[0005] The utility model is achieved through the following technical solutions:
[0006] A stowable radar north angle calibration tool comprises a main cross arm with two extension arms slidingly provided on the main cross arm. The two extension arms are extended on the main cross arm for calibration. After the two extension arms slide together, they are retracted and fixed on the main cross arm. The ends of the two extension arms are respectively provided with disc fixing positions for fixing the antenna.
[0007] Further preferably, the main cross arm is provided with a slide groove, and the bottoms of the two extended arms are respectively provided with slide bars that slide in cooperation with the slide groove.
[0008] Further preferably, a sliding stopper 1 is provided at both ends of the main horizontal arm, and a sliding stopper 2 is detachably provided on the two extension arms for cooperating with the sliding stopper 1 to limit the extension arms.
[0009] Further preferably, threaded hole one is provided in the middle of the main cross arm, threaded holes four are provided at both ends of the main cross arm, and threaded holes three are provided at the adjacent ends of the two extension arms respectively. Threaded hole three and threaded hole four are used to cooperate with screws to fix the extended extension arms after they are extended.
[0010] Further preferably, threaded hole two is provided on both sides of threaded hole one on the main cross arm, and threaded hole two and threaded hole three are used to cooperate with screws to fix the extended support arm after closing.
[0011] Further preferably, a magnetic base is provided in the disc fixing position for adsorbing and stabilizing the antenna.
[0012] Beneficial effects of the utility model:
[0013] The main cross arm and two extension arms of the utility model are fixed by screws, which can effectively and conveniently limit the extension arms, so that the extension arms can be extended or scaled relative to the main cross arm, and maintain the stability of the connection between the main cross arm itself and the extension arms in the corresponding state. When the extension arms are unfolded, the GNSS antenna baseline calibration distance requirements are met, and when the extension arms are folded, the size requirements for carrying are met.
[0014] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 The utility model is a structural schematic diagram of a stowable radar north angle calibration tool after being extended.
[0017] Figure 2 The utility model is a structural schematic diagram of a stowable radar north angle calibration tool after being folded.
[0018] Figure 3 The utility model is a structural schematic diagram of a main cross arm in a stowable radar north angle calibration tool.
[0019] Figure 4 The utility model is a schematic diagram of a state of a stowable radar north angle calibration tool when calibrating a radar.
[0020] 1- Main cross arm, 2- Extension arm, 3- Disc fixing position, 4- Slide slot, 5- Sliding block 1, 6- Sliding block 2, 7- Threaded hole 1, 8- Threaded hole 2, 9- Threaded hole 3, 10- Threaded hole 4, 11- Magnetic base. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.
[0022] refer to Figure 1-4 A stowable radar north angle calibration tool comprises a main cross arm 1, on which two extension arms 2 are slidingly provided, and at the ends of the two extension arms 2 are respectively provided with disc fixing positions 3 for fixing GNSS antennas. After the two extension arms 2 are stretched on the main cross arm 1, a calibration tool with a length that meets the requirements is obtained for calibration. After the two extension arms 2 are closed, they are just retracted on the main cross arm 1 and can be stowed, making it easy to carry the entire tool.
[0023] The main cross arm 1 is provided with a slide groove 4, and the bottom of the two extension arms 2 is provided with a slide bar (not shown in the figure). The two extension arms 2 slide in cooperation with the slide groove 4 on the main cross arm 1 through the slide bar. A sliding stopper 1 5 is provided at both ends of the main cross arm 1, and a sliding stopper 2 6 is detachably provided on the two extension arms 2. After the sliding stopper 1 5 and the sliding stopper 2 6 come into contact, they are used to limit the two extension arms 2 from sliding out of the main cross arm 1.
[0024] A threaded hole 7 is provided in the middle of the main cross arm 1. When the two extension arms 2 are extended, screws are inserted into the threaded hole 7 to fix the main cross arm 1 to the hole above the radar.
[0025] Threaded holes 2 8 are respectively provided on both sides of the threaded hole 1 7 on the main cross arm 1, and threaded holes 3 9 are respectively provided on the adjacent ends of the two extension arms 2. When the two extension arms 2 are closed, the threaded holes 3 9 on the two extension arms 2 correspond to the threaded holes 2 8 on the same side of the main cross arm 1, and then the two extension arms 2 are fixed and stored to the main cross arm 1 by passing screws through the threaded holes 3 9 and the threaded holes 2 8, making it easy to carry.
[0026] There are four threaded holes 10 at both ends of the main cross arm 1, and the four threaded holes 10 at both ends correspond to the three threaded holes 9 on the two extension arms 2 respectively. Then, after screws are passed through the three threaded holes 9 and the four threaded holes 10, the two extended extension arms 2 are fixed to the main cross arm 1, so as to maintain the stability of the connection between the extension arms 2 themselves and the main cross arm 1 during calibration.
[0027] A magnetic base 11 is provided in the disc fixing position 3 for adsorbing the GNSS antenna to maintain the stability of the GNSS antenna during calibration.
[0028] Working principle: When calibrating the north angle of the radar, slide the two extension arms 2 along the slider on the main cross arm 1 to the two ends of the main cross arm 1, and then use screws to pass through the threaded hole three 9 and the threaded hole four 10 in turn, and fix the two extension arms 2 to the two ends of the main cross arm 1, and then use screws to pass through the threaded hole one 7 to fix the main cross arm 1 to the radar to be calibrated. When fixing, make sure that the tooling and the radar are flush, and then adsorb the GNSS antenna on the magnetic base 11, and then you can calibrate. After the calibration is completed, remove the GNSS antenna, screws and the entire tooling, move the two extension arms 2 closer to the middle along the slider, and then use screws to pass through the threaded hole three 9 and the threaded hole two 8, and fix the two extension arms 2 to the main cross arm 1. The two extension arms 2 and the main cross arm 1 are stored for easy carrying.
[0029] The utility model provides a stowable radar north angle calibration tool, two extension arms 2 slide on the main cross arm 1, and the main cross arm 1 is fixed to the two extension arms 2 by screws, which are used to extend and resize the arms and adjust the length of the entire tool. The extension arms 2 can be effectively and conveniently limited so that the extension arms 2 can be expanded or closed relative to the main cross arm 1, and the connection stability of the extension arms 2 themselves and the main cross arm 1 can be maintained in the corresponding state. When the extension arms 2 are expanded, the baseline distance requirement of the Beidou antenna is met, and when the extension arms 2 are closed, the size requirement for carrying is met.
[0030] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0031] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.
Claims
1. A stowable radar north angle calibration tool, characterized by: The invention comprises a main cross arm (1), two extension arms (2) are slidingly provided on the main cross arm (1), the two extension arms (2) are calibrated after being extended on the main cross arm (1), and the two extension arms (2) are contracted and fixed on the main cross arm (1) after sliding together, and the ends of the two extension arms (2) are respectively provided with a disc fixing position (3) for fixing the antenna.
2. The stowable radar north angle calibration tool according to claim 1, characterized in that: The main cross arm (1) is provided with a slide groove (4), and the bottoms of the two extension arms (2) are respectively provided with a slide bar that slides in cooperation with the slide groove (4).
3. The stowable radar north angle calibration tool according to claim 2, characterized in that: Sliding stoppers (5) are provided at both ends of the main cross arm (1), and sliding stoppers (6) are detachably provided on the two extension arms (2) and cooperate with the sliding stoppers (5) to limit the extension arms (2).
4. The stowable radar north angle calibration tool according to claim 1, characterized in that: A threaded hole one (7) is provided in the middle of the main cross arm (1), threaded holes four (10) are provided at both ends of the main cross arm (1), and threaded holes three (9) are provided at the adjacent ends of the two extension arms (2), respectively. The threaded holes three (9) and the threaded holes four (10) are used to cooperate with screws to fix the extension arms (2) after they are extended.
5. The stowable radar north angle calibration tool according to claim 4, characterized in that: Threaded hole two (8) is provided on both sides of the threaded hole one (7) on the main cross arm (1), and the threaded hole two (8) and the threaded hole three (9) are used to cooperate with screws to fix the extended support arm (2) after closing.
6. The stowable radar north angle calibration tool according to claim 1, characterized in that: A magnetic base (11) is provided in the disc fixing position (3) for adsorbing and stabilizing the antenna.