GNSS displacement precision testing device

Abstract

The embodiment of the utility model relates to the technical field of engineering measurement, and discloses a GNSS displacement precision testing device. The GNSS displacement precision testing device comprises a base, a driving assembly, a GNSS antenna, a displacement detector, a GNSS receiver and a controller. The driving assembly is arranged on the base and comprises a driver and a driving part, and the driver controls the driving part to work; the GNSS antenna is movably arranged on the base, and the GNSS antenna is connected with the output end of the driving part through a transmission structure; the displacement detector is movably arranged on the base, the displacement detector and the GNSS antenna can move synchronously, and the displacement detector is used for detecting the displacement amount of the GNSS antenna; the GNSS receiver is in communication connection with the GNSS antenna; and the controller is in communication connection with the driver, sends an instruction to the driver to control the driving piece to work, and judges the measurement precision of the GNSS receiver according to the displacement amount of the displacement detector and the displacement amount detected by the GNSS receiver. The GNSS displacement precision testing device provided by the embodiment of the utility model not only can realize a remote control function in an actual engineering environment, but also can efficiently and accurately test the displacement precision of the GNSS receiver.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of engineering measurement technology, and in particular to a GNSS displacement accuracy testing device. Background Art

[0002] As a special monitoring device for obtaining relative position information, high-precision GNSS receivers can provide users with all-weather three-dimensional coordinates, speed and time information, and are widely used in safety monitoring fields such as mine monitoring, reservoir dams, landslides and bridge deformation. As GNSS receivers play a vital role in preventing catastrophic events, their accuracy is required to be as high as millimeter level to ensure accurate warning and timely response.

[0003] At present, the accuracy test of GNSS receivers is mainly carried out by manufacturers in their respective experimental field environments. These tests are usually carried out in ideal outdoor environments with a wide field of view, no obstructions around, no vibration and no magnetic interference, in order to obtain very high measurement accuracy. During the test, the staff creates a known displacement by moving a single-axis or multi-axis slide to test the accuracy performance of the GNSS receiver. However, in actual engineering environments, due to the complexity and variability of environmental factors, GNSS receivers often fail to achieve the accuracy performance in the experimental field environment. Therefore, how to improve the effect of GNSS receiver displacement accuracy testing in actual engineering environments is an important issue. Utility Model Content

[0004] The purpose of the implementation mode of the present application is to provide a GNSS displacement accuracy testing device, which can not only realize the remote control function in an actual engineering environment, but also efficiently and accurately test the displacement accuracy of a GNSS receiver.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a GNSS displacement accuracy test device, which includes a base, a driving component, a GNSS antenna, a displacement detector, a GNSS receiver and a controller. The driving component is arranged on the base, including a driver and a driving member, and the driver controls the operation of the driving member; the GNSS antenna is movably arranged on the base, and the GNSS antenna is connected to the output end of the driving member via a transmission structure; the displacement detector is movably arranged on the base, and the displacement detector can move synchronously with the GNSS antenna and is used to detect the displacement of the GNSS antenna; the GNSS receiver is connected to the GNSS antenna in communication; the controller is connected to the driver in communication, and the controller sends instructions to the driver to control the operation of the driving member, and judges the measurement accuracy of the GNSS receiver according to the displacement of the displacement detector and the displacement detected by the GNSS receiver.

[0006] The GNSS displacement accuracy test device provided in the embodiment of the present application is used to solve the problem that the displacement accuracy test of the GNSS receiver in the actual engineering environment has a poor effect. The GNSS displacement accuracy test device is composed of a base, a drive component, a GNSS antenna, a displacement detector, a GNSS receiver and a controller. The controller remotely controls the drive component, and the drive component drives the transmission structure to work, so that the GNSS antenna and the displacement detector arranged on the base are synchronously displaced. The measurement accuracy of the GNSS receiver is judged based on the comparative analysis of the displacement of the displacement detector and the displacement detected by the GNSS receiver. In this way, the remote control function can be realized in the actual engineering environment, and the displacement accuracy of the GNSS receiver can be tested efficiently and accurately.

[0007] In some embodiments, the transmission structure includes a slide movably disposed on the base and a ball screw rotatably connected to the base and cooperating with the slide. The slide moves along a preset direction on the base via the drive of the ball screw.

[0008] In some embodiments, the GNSS antenna and the displacement detector are both fixedly mounted on the slide.

[0009] In some embodiments, the base is provided with a first limit switch and a second limit switch, and the first limit switch and the second limit switch are arranged away from each other on the moving path of the slide and are used to detect the moving position of the slide.

[0010] In some embodiments, the controller is respectively connected to the first limit switch and the second limit switch for communication. When the slide moves to trigger the first limit switch or the second limit switch, the controller controls the slide to stop moving.

[0011] In some embodiments, a chassis is further included, in which the controller is disposed. The chassis also includes a wireless terminal, which is communicatively connected with the controller and is used for transmitting data and remotely controlling the controller.

[0012] In some embodiments, the transmission structure further includes a coupling, which connects the driving member and the ball screw.

[0013] In some embodiments, the base is disc-shaped, and a mounting hole is provided at the bottom of the base.

[0014] In some embodiments, a protective cover is provided on the base, and the protective cover is spherical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 is a schematic diagram of the structure of a GNSS displacement accuracy testing device provided in some embodiments of the present application;

[0017] Figure 2 is a hardware topology diagram of a GNSS displacement accuracy test device provided in some embodiments of the present application;

[0018] Figure 3 It is a schematic diagram of the chassis structure of the GNSS displacement accuracy testing device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0021] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0022] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0024] GNSS receivers have extremely high requirements for accuracy. However, in actual engineering scenarios, due to the complex and changeable environment and often not ideal conditions, GNSS receivers often find it difficult to achieve the expected accuracy standards. This decrease in accuracy affects the performance of GNSS receivers in actual applications, making it difficult to meet actual needs.

[0025] To this end, some embodiments of the present application provide a GNSS displacement accuracy test device. The GNSS displacement accuracy test device aims at the problem that the displacement accuracy test of the GNSS receiver in the actual engineering environment has a poor effect. The controller remotely controls the drive component, and the drive component drives the transmission structure to work, so that the GNSS antenna and the displacement detector arranged on the base are synchronously displaced, and the measurement accuracy of the GNSS receiver is judged based on the comparative analysis of the displacement of the displacement detector and the displacement detected by the GNSS receiver. In this way, the remote control function can be realized in the actual engineering environment, and the displacement accuracy of the GNSS receiver can be tested efficiently and accurately.

[0026] Combine the following Figures 1 to 3 , describing the GNSS displacement accuracy testing device provided in some embodiments of the present application.

[0027] like Figure 1As shown, the GNSS displacement accuracy test device provided by some embodiments of the present application includes a base 10, a driving component, a GNSS antenna 30, a displacement detector 40, a GNSS receiver and a controller 61. The driving component is arranged on the base 10, including a driver 21 and a driving member 22, and the driver 21 controls the operation of the driving member 22; the GNSS antenna 30 is movably arranged on the base 10, and the GNSS antenna 30 is connected to the output end of the driving member 22 via a transmission structure; the displacement detector 40 is movably arranged on the base 10, and the displacement detector 40 can move synchronously with the GNSS antenna 30 and is used to detect the displacement of the GNSS antenna 30; the GNSS receiver is connected to the GNSS antenna 30 in communication; the controller 61 is connected to the driver 21 in communication, and the controller 61 sends instructions to the driver 21 to control the operation of the driving member 22, and judges the measurement accuracy of the GNSS receiver according to the displacement of the displacement detector 40 and the displacement detected by the GNSS receiver. The GNSS displacement accuracy test device provided by the embodiment of the present application can not only realize the remote control function in an actual engineering environment, but also efficiently and accurately test the displacement accuracy of the GNSS receiver.

[0028] The base 10 can be made of aluminum alloy material. Aluminum alloy has a light weight and good strength, which helps to reduce the overall weight of the device, facilitates movement and installation, and also ensures the stability and load-bearing capacity of the base 10. In addition, aluminum alloy has good corrosion resistance and can resist the erosion of various environmental factors, so that the device can maintain stable performance in various harsh engineering environments and extend its service life. The base 10 can also be provided with a plurality of supporting aluminum alloy blocks, and the driving member 22 is fixed on the supporting aluminum alloy blocks to ensure the stability of the driving member 22.

[0029] The driving assembly includes a driver 21 and a driving member 22. The controller 61 can control the operation of the driver 21 by communicating with the driver 21. The driver 21 can control the driving member 22 to rotate according to a specified number of circles, thereby driving the GNSS antenna 30 located on the transmission structure to move. The driving member can use a precise servo motor, so that it can accurately execute the instructions of the driver 21 and ensure that the displacement of the GNSS antenna 30 meets the preset requirements.

[0030] The displacement detector 40 is movably disposed on the base 10 and moves synchronously with the GNSS antenna 30, so that the displacement detector 40 can measure the displacement of the GNSS antenna 30 in real time, thereby providing accurate position information to the user, which is particularly suitable for application scenarios that require real-time displacement monitoring of the target. The displacement detector 40 can use a digital scale, which is a high-precision linear position sensor that can measure the displacement of the target in real time and display the measurement results on a digital display. The digital display can intuitively display the displacement value, which is convenient for the user to observe and record the displacement accuracy in real time. The displacement detector 40 can also be provided with a bracket structure, which can be fixed on both sides of the supporting aluminum alloy block to increase the stability of the displacement detector.

[0031] The GNSS receiver is connected to the GNSS antenna 30 for communication, and the GNSS antenna 30 can transmit the received satellite signals to the GNSS receiver via a coaxial cable. In the GNSS receiver, by decoding and processing these signals, the three-dimensional coordinates, speed, time and other information of the receiver's location can be calculated. By comparing the displacement detected by the GNSS receiver with the displacement displayed by the displacement detector, the displacement accuracy of the GNSS receiver can be known.

[0032] In some embodiments, the transmission structure includes a slide 51 movably disposed on the base 10 and a ball screw 52 rotatably connected to the base 10 and cooperating with the slide 51 . The slide 51 moves along a preset direction on the base 10 driven by the ball screw 52 .

[0033] The ball screw 52 is rotatably connected to the base 10 and used in conjunction with the slide 51. The ball screw 52 is used to convert rotational motion into linear motion. Under the action of the driving force, the ball screw 52 can provide efficient and stable linear displacement control for the slide 51 and ensure the accuracy of the motion displacement, thereby meeting the requirements of high-precision motion control.

[0034] In some embodiments, the GNSS antenna 30 and the displacement detector 40 are both fixedly mounted on the slide 51 .

[0035] The GNSS antenna 30 and the displacement detector 40 are both fixedly arranged on the slide 51, and the displacement detector 40 can be bolted to the slide 51. A fixed connection relationship can be formed among the displacement detector 40, the GNSS antenna 30 and the slide 51. When the slide 51 moves along a preset direction on the base 10, the GNSS antenna 30 and the displacement detector 40 can be synchronously displaced along the preset direction.

[0036] In some embodiments, the base 10 is provided with a first limit switch 11 and a second limit switch 12 . The first limit switch 11 and the second limit switch 12 are arranged away from each other on the moving path of the slide 51 and are used to detect the moving position of the slide 51 .

[0037] The first limit switch 11 is located on one side of the moving path of the slide 51, and the second limit switch 12 is located on the other side of the moving path of the slide 51. This design is used to regulate the slide 51 to reach a preset range of the moving path to prevent the slide 51 from exceeding the predetermined moving range.

[0038] In some embodiments, the controller 61 is respectively connected to the first limit switch 11 and the second limit switch 12 for communication. When the slide 51 moves to trigger the first limit switch 11 or the second limit switch 12, the controller 61 controls the slide 51 to stop moving.

[0039] The first limit switch 11 and the second limit switch 12 are both communicatively connected to the controller 61. When the slide 51 moves to the first limit switch 11 or the second limit switch 12, the first limit switch 11 or the second limit switch 12 sends a signal to the controller 61, indicating that the slide 51 has reached the farthest position, and the controller 61 controls the slide 51 to stop moving.

[0040] In some embodiments, a chassis 60 is also included, and a controller 61 is set in the chassis 60. The chassis 60 also includes a wireless terminal 62, which is communicatively connected with the controller 61 and is used to transmit data and remotely control the controller 61.

[0041] like Figure 2 As shown, the controller 61, the wireless terminal 62, the displacement detector 40 and the driver 21 can establish a communication network through the RS485 bus. The controller 61 can receive remote instructions from the cloud platform through the wireless terminal 62, and can also read the value of the displacement detector 40 and send the current displacement data to the cloud platform. The controller 61 has programmable capabilities and can be built-in with an automated test program, saving time and effort.

[0042] like Figure 3As shown, the chassis 60 may include a chassis bottom plate 63, a guide rail, a switch power supply 64, an air switch 65, a 4G antenna 66, a controller 61 and a wireless terminal 62. The chassis 60 is fixedly connected to the chassis bottom plate 63, and a guide rail may be provided on the chassis bottom plate 63. The air switch 65, the controller 61 and the switch power supply 64 may be arranged on the guide rail. The 4G antenna 66 may be installed on the side wall of the chassis 60, and the wireless terminal 62 may be electrically connected to the 4G antenna 66. The wireless terminal 62 may be installed on the chassis bottom plate 63, and the controller 61 is connected to the wireless terminal 62 for communication to realize data exchange and control operations. The switch power supply 64 may be electrically connected to the air switch 65, the controller 61, the driver 21 and the wireless terminal 62. The air switch 65 may also be connected to an external mains power supply.

[0043] In some embodiments, the transmission structure further includes a coupling 53 , which connects the driving member 22 and the ball screw 52 .

[0044] The transmission structure may further include a coupling 53, which may function to connect the drive member 22 and the ball screw 52. When the distance between the drive member 22 and the ball screw 52 is insufficient for direct connection, the coupling 53 may make up for the distance difference, ensuring that the two can be stably and effectively connected together. The coupling 53 may also reduce vibration and impact during the transmission process to a certain extent, thereby improving the stability and reliability of the entire transmission structure.

[0045] In some embodiments, the base 10 is disc-shaped, and a mounting hole is provided at the bottom of the base 10 .

[0046] The base 10 may be disc-shaped, and a mounting hole may be provided at the bottom of the base 10 for fixing the forced centering disk on site. The forced centering disk may be fixed to the base 10 by threaded holes or other means, thereby ensuring the accuracy and stability of the assembly and improving the performance and reliability of the device.

[0047] In some embodiments, a protective cover 60 is disposed on the base 10 , and the protective cover 60 is spherical.

[0048] The base 10 may be provided with a protective cover 60, which may be spherical, and not only completely covers the base 10, the drive assembly, the GNSS antenna 30, the displacement detector 40, the slide 51, the ball screw 52, ​​the coupling 53, the first limit switch 11 and the second limit switch 12, but also makes the entire device rainproof and can be used outdoors for a long time. The protective cover 60 will not affect the signal reception of the GNSS antenna. The protective cover 50 may be made of plastic.

[0049] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A GNSS displacement accuracy test device, characterized in that: include: Base; A driving assembly, arranged on the base, comprising a driver and a driving member, wherein the driver controls the driving member to work; A GNSS antenna is movably disposed on the base, and the GNSS antenna is connected to an output end of the driving member via a transmission structure; A displacement detector is movably disposed on the base, and the displacement detector can move synchronously with the GNSS antenna and is used to detect the displacement of the GNSS antenna; A GNSS receiver, communicatively connected to the GNSS antenna; A controller is connected to the driver for communication. The controller sends instructions to the driver to control the operation of the driving member, and determines the measurement accuracy of the GNSS receiver according to the displacement of the displacement detector and the displacement detected by the GNSS receiver.

2. A GNSS displacement accuracy test device according to claim 1, characterized in that: The transmission structure includes a slide movably arranged on the base and a ball screw rotatably connected to the base and cooperating with the slide. The slide is driven by the ball screw to move along a preset direction on the base.

3. A GNSS displacement accuracy test device according to claim 2, characterized in that: The GNSS antenna and the displacement detector are both fixedly arranged on the slide.

4. A GNSS displacement accuracy test device according to claim 2, characterized in that: The base is provided with a first limit switch and a second limit switch, and the first limit switch and the second limit switch are arranged away from each other on the moving path of the slide and are used to detect the moving position of the slide.

5. A GNSS displacement accuracy testing device according to claim 4, characterized in that: The controller is in communication connection with the first limit switch and the second limit switch respectively. When the slide moves to trigger the first limit switch or the second limit switch, the controller controls the slide to stop moving.

6. A GNSS displacement accuracy test device according to claim 4, characterized in that: It also includes a chassis, the controller is arranged in the chassis, and the chassis also includes a wireless terminal, the wireless terminal is communicatively connected with the controller and is used for transmitting data and remotely controlling the controller.

7. A GNSS displacement accuracy test device according to claim 2, characterized in that: The transmission structure also includes a coupling, which connects the driving member and the ball screw.

8. The GNSS displacement accuracy test device according to claim 1, characterized in that: The base is disc-shaped, and a mounting hole is provided at the bottom of the base.

9. A GNSS displacement accuracy test device according to claim 1, characterized in that: A protective cover is arranged on the base, and the protective cover is spherical.

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