A forced centering beidou high-precision roadbed settlement monitoring device

Abstract

The utility model discloses a kind of Beidou high-precision roadbed settlement monitoring devices of forced centring, including Beidou positioning module, standard thread interface, fixed-length support rod, support base, Beidou positioning module includes signal connection's Beidou multi-frequency positioning reference station and Beidou positioning receiver, one end of fixed-length support rod is fixed with support base, standard thread interface is installed on the other end, Beidou positioning receiver is installed on standard thread interface.The utility model is aimed at the condition of roadbed settlement monitoring tube, design support base and thread interface, through the design of fixed structure and thread interface and forced centring, so that roadbed settlement monitoring can be realized by Beidou high-precision positioning technology, avoid the influence of incidental error of leveling measurement;Through the design of strict thread interface, the fixed length of support rod and the design of support base avoids installation error when monitoring at different times, structure is stable and has strong impact resistance, adapt to construction site, facilitate long-term monitoring.

Description

Technical Field

[0001] This utility model relates to the field of settlement monitoring, and in particular to a Beidou high-precision roadbed settlement monitoring device with forced centering. Background Technology

[0002] The official completion of the BeiDou Navigation Satellite System has enabled the further development and application of high-precision positioning technology based on the BeiDou system. Its dynamic centimeter-level and static millimeter-level relative positioning accuracy has played a crucial role in engineering construction. In particular, in settlement monitoring, it has become a monitoring method that can replace fourth-order leveling techniques.

[0003] Currently, the commonly used settlement monitoring technologies in highway construction include settlement plates, settlement pipes, and leveling, which suffer from high costs and labor costs. Furthermore, unlike some engineering projects where it's convenient to set up GNSS receivers for deformation monitoring, highway construction requires processes such as soil compaction. The installation errors of conventional GNSS receiver setup methods themselves have a significant impact on settlement monitoring, making them unsuitable for highway settlement monitoring. Utility Model Content

[0004] Purpose of the utility model: In view of the above problems, the purpose of this utility model is to provide a Beidou high-precision roadbed settlement monitoring device with forced centering, so as to solve the problem of random error introduced by repeated equipment installation in roadbed settlement monitoring.

[0005] Technical solution: A forced centering Beidou high-precision roadbed settlement monitoring device, including a Beidou positioning module, a standard threaded interface, a fixed-length support rod, and a support base. The Beidou positioning module includes a Beidou multi-frequency positioning reference station and a Beidou positioning receiver connected by signals. One end of the fixed-length support rod is fixed to the support base, and a standard threaded interface is installed on the other end. The Beidou positioning receiver is installed on the standard threaded interface.

[0006] The BeiDou positioning module completes the core data acquisition and calculation, collecting high-quality observation data to achieve high-precision relative positioning. The BeiDou positioning receiver is responsible for collecting data and forming a double-difference model with the base station for baseline calculation. This device uses a standardized, mechanical standard threaded interface design to rigidly connect the phase center of the BeiDou positioning receiver to the roadbed settlement pipe. The elevation changes through BeiDou's high-precision relative positioning reflect the roadbed settlement without the need for manual intervention in measurement.

[0007] Furthermore, BeiDou multi-frequency positioning reference stations are located in unobstructed, electromagnetically free, and stable locations with reliable network and power supply, and are not prone to subsidence. This ensures high-quality reference station data, providing differential information to user stations and eliminating errors from the ionosphere, troposphere, and other environments.

[0008] Furthermore, the vertical cross-section of the support base is an inverted U-shaped structure, and the support base is fitted onto the settlement pipe.

[0009] Ideally, the support base should have a wall thickness of 4–8 mm, an inner cavity height of 90–92 mm, and a width of 90–94 mm.

[0010] Ideally, the interface should be compatible with the standard threaded interface of the BeiDou positioning receiver, with an internal thread diameter of 15–18 mm. This ensures that each settlement monitoring session only tracks changes in elevation at the monitoring point.

[0011] Ideally, the length of the fixed-length support rod should be 1500–1600 mm.

[0012] Beneficial effects: Compared with the prior art, the advantages of this utility model are:

[0013] For the roadbed settlement monitoring pipe, a support base and threaded interface are designed. Through the design of the fixed structure and threaded interface, forced centering is achieved, enabling roadbed settlement monitoring to be realized through Beidou high-precision positioning technology, avoiding the influence of random errors in leveling measurements. The strict design of the threaded interface, the fixed length of the support rod, and the design of the support base avoid installation errors when monitoring at different times. Compared with traditional methods, this device reduces manpower and material costs, avoids random errors, and can also be automated and operate in all weather conditions. At the same time, the hollow base design utilizes the existing settlement pipe structure, which is structurally stable, has strong impact resistance, is adaptable to the construction site, and is convenient for long-term monitoring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of a standard threaded interface. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0017] A high-precision BeiDou-based roadbed settlement monitoring device with forced centering, such as Figure 1 , 2 As shown, it includes a Beidou positioning module, a standard threaded interface 1, a fixed-length support rod 2, and a support base 3.

[0018] The BeiDou positioning module includes a BeiDou multi-frequency positioning reference station and a BeiDou positioning receiver connected by signals. The BeiDou multi-frequency positioning reference station is located in a space where there are no obstructions, no electromagnetic interference, stable network and power, and it is not easy to sink.

[0019] The bottom end of the fixed-length support rod 2 is welded and fixed to the top surface of the support base 3, and a standard threaded interface 1 is installed on the top end. The Beidou positioning receiver is installed on the standard threaded interface 1.

[0020] In a preferred embodiment, the standard threaded interface 1 is a 5 / 8 threaded interface with an internal thread diameter of 15mm to ensure that there is no loose gap after the Beidou positioning receiver is tightened, thus ensuring that the settlement monitoring is not affected by the installation of the user receiver; the fixed-length support rod 2 is made of high-strength material and is treated with rust prevention, and the length of the fixed-length support rod 2 is strictly cut and calibrated to 1.5m.

[0021] The vertical cross-section of the support base 3 is an inverted U-shape, and it is fitted onto the settlement pipe. The inner cavity width of the support base 3 is 90mm, and the spacing between the two outer walls is 98mm, resulting in an 8mm wall thickness that provides a certain degree of impact resistance. The overall height of the support base 3 is 94mm, with an inner cavity height of 90mm and a 4mm thickness for support to facilitate welding with the support rod. After welding, vertical alignment is performed to ensure that the rod axis is strictly perpendicular to the bottom surface of the base.

[0022] The working principle of this utility model is as follows:

[0023] Before conducting roadbed settlement monitoring, the site selection, installation, and data quality testing of the benchmark station should be completed;

[0024] See attached document Figure 1 By welding a fixed-length support rod 2 to a fixed-width support base 3, the soil and debris around the settlement pipe are first cleared during roadbed settlement monitoring, exposing a certain length of the pipe opening. The support base 3 is then fitted onto the settlement pipe to ensure that the height change of the settlement pipe is measured during each settlement monitoring session. A Beidou positioning receiver is then connected via a standard threaded interface 1 with a fixed inner diameter to achieve forced centering. Finally, the elevation change calculated from the observation data collected at different times before and after the Beidou high-precision positioning receiver represents the settlement status of the settlement pipe.

Claims

1. A forced centering BeiDou high-precision roadbed settlement monitoring device, characterized in that: It includes a Beidou positioning module, a standard threaded interface (1), a fixed-length support rod (2), and a support base (3). The Beidou positioning module includes a Beidou multi-frequency positioning reference station and a Beidou positioning receiver connected by signals. One end of the fixed-length support rod (2) is fixed to the support base (3), and the other end is equipped with a standard threaded interface (1). The Beidou positioning receiver is installed on the standard threaded interface (1).

2. The forced centering BeiDou high-precision roadbed settlement monitoring device according to claim 1, characterized in that: The BeiDou multi-frequency positioning reference station is located in a spatial location that is unobstructed, free from electromagnetic interference, has a stable network and power supply, and is not prone to subsidence.

3. The forced centering BeiDou high-precision roadbed settlement monitoring device according to claim 1, characterized in that: The vertical cross section of the support base (3) is an inverted U-shaped structure, and the support base (3) is fitted onto the settlement pipe.

4. The forced centering BeiDou high-precision roadbed settlement monitoring device according to claim 3, characterized in that: The support base (3) has a wall thickness of 4-8mm, an inner cavity height of 90-92mm, and a width of 90-94mm.

5. The forced centering BeiDou high-precision roadbed settlement monitoring device according to claim 1, characterized in that: The standard threaded interface (1) is compatible with the Beidou positioning receiver interface. The internal thread diameter of the standard threaded interface (1) is 15-18mm.

6. The forced centering BeiDou high-precision roadbed settlement monitoring device according to claim 1, characterized in that: The length of the fixed-length support rod (2) is 1500-1600mm.

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