High-precision RTK measuring device based on GPS

Abstract

The utility model relates to the technical field of measuring instruments, in particular to a high-precision RTK (Real Time Kinematic) measuring device based on a GPS (Global Positioning System), which comprises a mounting base station, an RTK measuring instrument and a fixed base, the RTK measuring instrument is installed on the top of the installation base station, the RTK measuring instrument installed on the installation base station is mainly a global positioning system (GPS)-based global navigation satellite system (GNSS) receiver, the GNSS receiver is matched with the GPS to carry out high-precision measurement, the bottom of the installation base station is connected with a group of rotary lifting mechanisms, and the bottoms of the rotary lifting mechanisms are installed on the fixed base. The RTK measuring instrument is driven by the rotary lifting mechanism to continuously rotate, and the height is adjusted according to the requirement of height measurement, so that the RTK measuring instrument is controlled to carry out omnibearing continuous measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, specifically a high-precision RTK measuring device based on GPS. Background Technique

[0002] The high-precision RTK measuring device based on GPS is an advanced measuring technology, which combines the Global Positioning System (GPS) and Real-Time Kinematic (RTK) technology to obtain high-precision position information. This device is widely used in fields such as surveying and mapping, engineering, and agriculture; the main components of the RTK measuring device include a reference station: a GNSS receiver fixed at a known coordinate point, a rover: a movable GNSS receiver for actual measurement, a data link: a communication system for transmitting correction data between the reference station and the rover, such as radio or mobile network, and a controller: a handheld device or tablet computer for operation and data processing.

[0003] The existing patent authorization number is: CN214669620U, which discloses a high-precision measuring instrument based on GPS-RTK technology, solving the problems that it is impossible to simply and accurately obtain the height of the instrument, resulting in large errors in measurement results; the GPS-RTK measuring instrument is not perfect enough in terms of rain and sun shading; the fixed tripod needs to be disassembled and installed, and it is not convenient to carry. After analyzing this measuring instrument, it can be seen that it mainly solves the problem of inconvenient carrying. However, for the RTK measuring device, its moving frequency is not high. Once it is fixed and used in engineering, agriculture and other occasions, the usage cycle is relatively long. The convenience of carrying does not play a major role in the whole device. For the RTK measuring device, real-time all-weather measurement is adopted during use. Therefore, during operation, it is required to maintain a good and stable measurement range. At the same time, to improve the measurement accuracy, good adjustment ability is required; however, for the above-mentioned measuring instruments, the corresponding functions are lacking;

[0004] Therefore, in view of the above existing problems, the present technical solution proposes a high-precision RTK measuring device based on GPS. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-precision RTK measuring device based on GPS to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A high-precision RTK measurement device based on GPS, including an installation base, an RTK measuring instrument, and a fixed base; the RTK measuring instrument is installed on the top of the installation base, and the RTK measuring instrument installed on the installation base is mainly a GNSS receiver based on GPS, which performs high-precision measurement by cooperating with GPS through the GNSS receiver. A set of rotary lifting mechanisms are connected to the bottom of the installation base, and the bottom of the rotary lifting mechanism is installed on the fixed base. The rotary lifting mechanism drives the RTK measuring instrument to rotate continuously and adjusts the height according to the measurement height requirement, so as to control the RTK measuring instrument to perform all-round continuous measurement:

[0007] The rotary lifting mechanism includes a support disk arranged parallel to the upper part of the fixed base. Both sides of the bottom of the support disk are fixed on the fixed base through two main brackets. A driven gear is rotatably installed on the outside of the support disk. One side of the driven gear meshes with a main driving gear. The bottom of the main driving gear is connected with a servo motor I. One side of the bottom of the servo motor I is fixed on the side wall of the main bracket through a support rod. Two telescopic members are symmetrically installed on both sides of the top of the driven gear, and the top of the telescopic members is fixedly connected to the bottom of the installation base. Starting the servo motor I to drive the main driving gear to rotate, and then driving the two telescopic members at the top of the driven gear to rotate by the meshing of the main driving gear and the driven gear, thereby driving the RTK measuring instrument on the installation base to rotate. At the same time, a lead screw hole is opened at the center of the support disk, and a lead screw is arranged inside the lead screw hole. The bottom end of the lead screw is connected with a bevel gear II through a connecting rod. One side of the bevel gear II is vertically meshed with a bevel gear I. The center of one side of the bevel gear I is connected with a servo motor II fixed on the main bracket. A lifting cylinder is sleeved on the lead screw. A nut threadedly connected to the lead screw is installed at the inner bottom end. A guiding device for restricting its self-rotation is arranged on the nut. The top end of the lifting cylinder is rotatably connected to the inside of the bottom of the installation base. That is, starting the servo motor II to drive the bevel gear I to rotate, and then driving the bevel gear II to drive the lead screw to rotate, and then controlling the nut to drive the lifting cylinder to move vertically in a cyclic reciprocating manner along the lead screw, thereby adjusting the height of the installation base. When the height of the installation base is adjusted, the two telescopic members on both sides extend synchronously, that is, to ensure that the rotation and lifting of the installation base do not affect each other, thereby realizing the full-range rotation measurement of the RTK measuring instrument and having the function of adjusting the measurement height.

[0008] Compared with the prior art, the beneficial effects of the present utility model are: By arranging a rotary lifting mechanism at the bottom of the installation base, controlling the installation base to rotate in real time or adjustably, controlling the RTK measuring instrument to perform real-time measurement within a circular range, and synchronously adjusting the measurement height of the RTK measuring instrument, further increasing the measurement adjustment ability of the device, and then using the RTK measuring instrument to cooperate with GPS to perform high-precision measurement, realizing the efficient measurement function of the device. Description of the Drawings

[0009] Figure 1Schematic diagram of the three-dimensional structure of a high-precision RTK measurement device based on GPS.

[0010] Figure 2 Schematic diagram of the front view structure of a high-precision RTK measurement device based on GPS.

[0011] Figure 3 Schematic diagram of the top view structure of the support disk in a high-precision RTK measurement device based on GPS.

[0012] Figure 4 Schematic diagram of the internal partial structure of the lifting cylinder in a high-precision RTK measurement device based on GPS.

[0013] Wherein: mounting base 10, RTK measuring instrument 11, fixed base 12, main bracket 13, servo motor I 14, servo motor II 15, main driving gear 16, driven driving gear 17, support disk 18, rotating ring 19, lead screw hole 20, telescopic rod cylinder 21, telescopic rod 22, lead screw 23, lifting cylinder 24, auxiliary bracket 25, sleeve 26, connecting block 27, rotating shaft 28, nut 29, bevel gear I 30, bevel gear II 31. Detailed implementation manners

[0014] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0015] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0016] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0017] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0018] Please refer to Figures 1-4 , a high-precision RTK measurement device based on GPS, including an installation base 10, an RTK measuring instrument 11, and a fixed base 12; the RTK measuring instrument 11 is installed on the top of the installation base 10. The RTK measuring instrument 11 installed on the installation base 10 is mainly a GNSS receiver based on GPS, and high-precision measurement is carried out by the GNSS receiver in cooperation with GPS. A set of rotary lifting mechanisms are connected and arranged at the bottom of the installation base 10, and the bottom of the rotary lifting mechanism is installed on the fixed base 12. The rotary lifting mechanism drives the RTK measuring instrument 11 to rotate continuously, and the height is adjusted according to the requirements of the measurement height, so as to control the RTK measuring instrument 11 to perform all-round continuous measurement:

[0019] The rotary lifting mechanism includes a support disk 18 arranged parallel to the upper side of the fixed base 12. Both sides of the bottom of the support disk 18 are fixed to the fixed base 12 through two main brackets 13. A driven gear 17 is rotatably installed on the outer side of the support disk 18. One side of the driven gear 17 meshes with a main drive gear 16. The bottom of the main drive gear 16 is connected to a servo motor I 14. One side of the bottom of the servo motor I 14 is fixed to the side wall of the main bracket 13 through a support rod. Two telescopic members are symmetrically installed on both sides of the top of the driven gear 17. The top of the telescopic members is fixedly connected to the bottom of the installation base 10. Starting the servo motor I 14 to drive the main drive gear 16 to rotate, and then driving the two telescopic members at the top of the driven gear 17 to rotate by the meshing of the main drive gear 16 and the driven gear 17, thereby driving the RTK measuring instrument 11 on the installation base 10 to rotate. At the same time, a lead screw hole 20 is provided at the center of the support disk 18. A lead screw 23 is arranged inside the lead screw hole 20. The bottom end of the lead screw 23 is connected to a bevel gear II 31 through a connecting rod. One side of the bevel gear II 31 is vertically meshed with a bevel gear I 30. The center of one side of the bevel gear I 30 is connected to a servo motor II 15 fixed to the main bracket 13. A lifting cylinder 24 is sleeved on the lead screw 23. A nut 29 threadedly connected to the lead screw 23 is installed at the inner bottom end. A guiding device for restricting its self-rotation is provided on the nut 29. The top end of the lifting cylinder 24 is rotatably connected to the inside of the bottom of the installation base 10. That is, starting the servo motor II 15 to drive the bevel gear I 30 to rotate, and then driving the bevel gear II 31 to drive the lead screw 23 to rotate, and then controlling the nut 29 to drive the lifting cylinder 24 to move vertically in a cyclic reciprocating manner along the lead screw 23, thereby adjusting the height of the installation base 10. When the height of the installation base 10 is adjusted, the two telescopic members on both sides extend synchronously, that is, ensuring that the rotation and lifting of the installation base 10 do not affect each other, thereby realizing the full-range rotation measurement of the RTK measuring instrument 11 and having the function of adjusting the measurement height.

[0020] In the embodiment of the present invention, for the RTK measuring instrument 11 based on GPS, its composition and working principle are briefly described as follows: The reference station receives GPS signals, calculates its position error, and the reference station transmits error correction data to the mobile station in real time through a data link. The mobile station receives GPS signals and correction data, and performs real-time position calculation. Through differential correction, centimeter-level positioning accuracy can be obtained within a short time; for the detailed operation process and operation process, since it belongs to the prior art, it will not be elaborated here;

[0021] Installation holes are provided on the fixed base 12. The fixed base 12 is fixed by means of structures such as bolts in cooperation with the installation holes, so as to ensure the stability of the operation of the RTK measuring instrument 11; A sleeve 26 is sleeved in the middle of the lifting cylinder 24. Two auxiliary brackets 25 are symmetrically installed on both sides of the sleeve 26. The bottom ends of the auxiliary brackets 25 are fixed to the support disk 18, and the sleeve 26 is used to improve the stability of the vertical movement of the lifting cylinder 24;

[0022] A connecting block 27 is installed at the top of the lifting cylinder 24, and a rotating shaft 28 is installed at the top of the connecting block 27. The rotating shaft 28 is rotatably connected to the inside of the bottom of the mounting base 10, that is, it is ensured that the rotation of the mounting base 10 will not affect the height adjustment of the mounting base 10 during the lifting of the lifting cylinder 24.

[0023] In an example of the present invention, the telescopic member includes a telescopic rod cylinder 21 with its bottom fixed to the top of the driven gear 17. A telescopic rod 22 is telescopically connected inside the telescopic rod cylinder 21, and the top of the telescopic rod 22 is fixed to the bottom of the mounting base 10. That is, when the mounting base 10 is lifted or lowered, the telescopic rod 22 is synchronously driven to move inside the telescopic rod cylinder 21;

[0024] Specifically, a rotating ring 19 is installed on the outer wall of the circumferential direction of the support disk 18. A rotating groove is opened inside the corresponding driven gear 17 of the rotating ring 19, and the rotating ring 19 is rotatably connected in the rotating groove, that is, it is ensured that when the driven gear 17 rotates, it will not affect the support disk 18.

[0025] The working principle of the present utility model is as follows: At the idle position of the present device, all the above-mentioned driving parts, which refer to power elements, electrical parts and the adapted power supply, are connected by wires, and the electrical connection is completed for the sequential working order among the electrical parts. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and will not explain the electrical control. During operation, the RTK surveying instrument 11 is installed on the mounting base 10, and then the main bracket 13 is fixed through the fixed base 12. Then the RTK surveying instrument 11 is started to cooperate with the GPS for measurement. During the measurement process, according to the required measurement height and placement angle, the servo motor I 14 is started to drive the main driving gear 16 to rotate, thereby driving the driven gear 17 to rotate. Then, under the connection of the telescopic member, the rotation of the mounting base 10 is controlled, that is, the placement angle of the RTK surveying instrument 11 is adjusted. It is also possible to control the continuous rotation of the mounting base 10 for real-time measurement within a circular range. It is also possible to start the servo motor II 15 to drive the bevel gear I 30 to drive the bevel gear II 31 to rotate, and then drive the lifting cylinder 24 to move up and down along the lead screw 23 to adjust the measurement height of the RTK surveying instrument 11 and expand the measurement range.

[0026] The above has made a detailed description of the preferred embodiment of this patent, but this patent is not limited to the above embodiment. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of this patent.

Claims

1. High-precision RTK measurement device based on GPS, characterized in that: The invention comprises a mounting base (10), an RTK measuring instrument (11), and a fixed base (12); the RTK measuring instrument (11) is mounted on the top of the mounting base (10); a group of rotating lifting mechanisms are connected to the bottom of the mounting base (10); the bottom of the rotating lifting mechanism is mounted on the fixed base (12); the rotating lifting mechanism comprises a support plate (18) arranged in parallel and just above the fixed base (12); the bottom sides of the support plate (18) are fixed to the fixed base (12) via two main brackets (13); a slave drive tooth (17) is rotatably mounted on the outer side of the support plate (18); a main drive tooth (16) is meshed on one side of the slave drive tooth (17); a servo motor I (14) is connected to the bottom of the main drive tooth (16); the bottom side of the servo motor I (14) is fixed to the main bracket (13) via a support rod. ) side wall, two telescopic parts are symmetrically installed on both sides of the top of the driving tooth (17), the top of the telescopic part is fixedly connected to the bottom of the mounting base (10), a screw hole (20) is opened at the center of the support plate (18), a screw hole (20) is arranged inside the screw hole (20), the bottom end of the screw (23) is connected to a bevel gear II (31) through a connecting rod, one side of the bevel gear II (31) is vertically meshed with a bevel gear I (30), and the center of one side of the bevel gear I (30) is connected to a servo motor II (15) fixed on the main bracket (13), a lifting cylinder (24) is mounted on the screw (23), a nut (29) threadedly connected to the screw (23) is installed at the inner bottom end, and a guide device for limiting its rotation is arranged on the nut (29), and the top end of the lifting cylinder (24) is rotatably connected to the bottom of the mounting base (10).

2. The high-precision RTK measurement device based on GPS according to claim 1, characterized in that: A cylinder sleeve (26) is sleeved in the middle of the lifting cylinder (24), and two auxiliary brackets (25) are symmetrically mounted on both sides of the cylinder sleeve (26), and the bottom ends of the auxiliary brackets (25) are fixed on the support plate (18).

3. The high-precision RTK measurement device based on GPS according to claim 2, characterized in that: A connection block (27) is installed at the top of the lifting cylinder (24), a rotating shaft (28) is installed at the top of the connection block (27), and the rotating shaft (28) is rotatably connected to the inside of the bottom of the mounting base (10).

4. The high-precision RTK measurement device based on GPS according to claim 3, characterized in that: The telescopic member comprises a telescopic rod tube (21) whose bottom end is fixed to the top of the driving tooth (17); a telescopic rod (22) is telescopically connected inside the telescopic rod tube (21); and the top end of the telescopic rod (22) is fixed to the bottom of the mounting base (10).

5. The high-precision RTK measurement device based on GPS according to claim 4, characterized in that: A rotating ring (19) is installed on the circumferential outer wall of the support plate (18), and a rotating groove is opened in the interior of the driving tooth (17) corresponding to the rotating ring (19), and the rotating ring (19) is rotatably connected in the rotating groove.

Images