Calibration device of satellite positioning displacement measurement system

Abstract

The utility model discloses a calibration device of a satellite positioning displacement measurement system, which comprises a first leveling mechanism and a second leveling mechanism, the first leveling mechanism is provided with a first linear motion mechanism and a second linear motion mechanism, the first linear motion mechanism is provided with a first receiver and a first laser tracker target ball, and the second linear motion mechanism is provided with a second receiver and a second laser tracker target ball. The second linear motion mechanism is provided with a second laser tracker target ball, and the second leveling mechanism is provided with a laser tracker matched with the first laser tracker target ball or the second laser tracker target ball. Compared with the prior art, the calibration device provided by the utility model adopts the laser tracker as a main standard device, so that the calibration precision and the measurement range are effectively ensured. And secondly, a rotating platform or a third linear motion mechanism does not need to be arranged for the second linear motion mechanism, so that the device is simplified, the size of the calibration device is further reduced, the calibration device is convenient to carry and use outdoors, and meanwhile, the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to satellite positioning receiver calibration technical field, especially a kind of calibration device of satellite positioning displacement measurement system. BACKGROUND

[0002] At present, the user of satellite navigation remote displacement measurement system puts forward higher and higher requirements to the accuracy of measurement characteristics and the accuracy of value traceability, so the development of this kind of displacement measurement system calibration device is very critical.The patent application with publication number CN118129676A discloses a kind of calibration device and calibration method of satellite navigation remote displacement measurement system, including rotating platform, the lower end of rotating platform is equipped with multiple height adjusting mechanisms, the upper end of rotating platform is rotationally arranged with installation platform, the upper of installation platform is equipped with X-axis moving mechanism, Z-axis moving mechanism and receiver, the receiver moves along X-axis direction and Z-axis direction respectively by X-axis moving mechanism and Z-axis moving mechanism, displacement sensor is arranged on the X-axis moving mechanism and Z-axis moving mechanism, level and compass are fixed on the installation platform;Receiver moves along Y-axis direction under the cooperation of rotating platform and X-axis moving mechanism.In this calibration mode, in order to adjust the movement direction of X-axis moving mechanism, rotating platform and compass and other structures are added, thereby increasing the volume of calibration device, and improving the complexity of device. UTILITY MODEL CONTENT

[0003] The utility model provides a kind of calibration device of satellite positioning displacement measurement system, to solve the problems of existing calibration device with large volume and complex structure.

[0004] The utility model provides a kind of calibration device of satellite positioning displacement measurement system, including first leveling mechanism and second leveling mechanism, first leveling mechanism is equipped with first linear motion mechanism and second linear motion mechanism, first linear motion mechanism is equipped with first receiver and first laser tracker target ball, second linear motion mechanism is equipped with second laser tracker target ball, first linear motion mechanism is used to drive first laser tracker target ball to move up and down, second linear motion mechanism is used to drive second laser tracker target ball to move horizontally, second leveling mechanism is equipped with laser tracker that cooperates with first laser tracker target ball or second laser tracker target ball.

[0005] Preferably, the first linear motion mechanism is a lead screw and block linear motion module, and the upper end of the guide rail of the first linear motion mechanism is provided with two vertically arranged levels.

[0006] Preferably, a first support plate is fixed on the slider of the first linear motion mechanism, the first receiver is mounted on the first support plate, and the first laser tracker target ball is fixed on the first support plate through a first support plate, and the first support plate and the first support plate are both L-shaped plates.

[0007] Preferably, the second linear motion mechanism is a lead screw and slider linear motion module, and the upper end of the guide rail of the second linear motion mechanism is provided with a plurality of levels.

[0008] Preferably, a second support plate is fixed on the slider of the second linear motion mechanism, and the second laser tracker target ball is fixed on the second support plate through a second support plate, and the second support plate is an L-shaped plate.

[0009] Preferably, the first support plate and the second support plate are both provided with a level.

[0010] Preferably, the first leveling mechanism comprises a mounting plate, and the lower end of the mounting plate is provided with a plurality of height adjustment legs.

[0011] Preferably, the second leveling mechanism has the same structure as the first leveling mechanism.

[0012] Preferably, the first receiver is fixed on the first support plate through a connecting rod.

[0013] Compared with the prior art, the calibration device adopts a laser tracker as a master standard device, effectively ensuring the calibration precision and the measurement range. Secondly, the second linear motion mechanism does not need to be provided with a rotating platform or a third linear motion mechanism, so that the device is simplified, the volume of the calibration device is further reduced, outdoor use is facilitated, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0015] Figure 1 It is a structural schematic view of the first leveling mechanism of the present application.

[0016] Figure 2 It is a structural schematic view of the second leveling mechanism of the present application.

[0017] Figure 3 It is Figure 1 It is an enlarged schematic view of the structure at A.

[0018] Reference signs:

[0019] 1. first leveling mechanism, 2. second leveling mechanism, 3. first linear motion mechanism, 4. second linear motion mechanism, 5. first receiver, 6. first laser tracker target ball, 7. second laser tracker target ball, 8. laser tracker, 9. level, 10. first support plate, 11. first support plate, 12. second support plate, 13. second support plate, 14. connecting rod, 15. second receiver, 011. mounting plate, 012. height adjustment leg, 100. guide rail, 200. slider, 300. motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Referring to the drawings Figure 1 and the drawings Figure 2 , the embodiment provides a kind of calibration device of satellite positioning displacement measurement system, including first leveling mechanism 1 and second leveling mechanism 2, first leveling mechanism 1 is equipped with first linear motion mechanism 3 and second linear motion mechanism 4, first linear motion mechanism 3 is equipped with first receiver 5 and first laser tracker target ball 6, second linear motion mechanism 4 is equipped with second laser tracker target ball 7, first linear motion mechanism 3 is used to drive first laser tracker target ball 6 to move up and down, second linear motion mechanism 4 is used to drive second laser tracker target ball 7 to move horizontally, second leveling mechanism 2 is equipped with laser tracker 8 that cooperates with first laser tracker target ball 6 or second laser tracker target ball 7.

[0022] One kind of implementation of first linear motion mechanism 3: first linear motion mechanism 3 is screw block linear motion module, the upper end of the guide rail 100 of first linear motion mechanism 3 is equipped with two vertical settings level 9.Specifically, screw block linear motion module includes: guide rail 100, screw, slider 200 and motor 300, slider 200 is slidably connected with guide rail 100, slider 200 is threadedly connected with screw, motor 300 drives screw rotation to drive slider 200 along guide rail 100 sliding.

[0023] As another embodiment of the utility model: refer to the drawings Figure 3The first support plate 10 is fixed on the slider 200 of the first linear motion mechanism 3, the first receiver 5 is installed on the first support plate 10, the first laser tracker target ball 6 is fixed on the first support plate 10 through the first support plate 11, and the first support plate 10 and the first support plate 11 are both L-shaped plates.

[0024] One embodiment of the second linear motion mechanism 4: the second linear motion mechanism 4 is a lead screw and slider linear motion module, and the upper end of the guide rail 100 of the second linear motion mechanism 4 is provided with a plurality of levels 9.

[0025] As another embodiment of the utility model: the second support plate 12 is fixed on the slider 200 of the second linear motion mechanism 4, and the second laser tracker target ball 7 is fixed on the second support plate 12 through the second support plate 13, and the second support plate 13 is an L-shaped plate. The first receiver 5 can be installed on the second support plate 12, so that the first receiver 5 calibrates the indication value in the height direction and the indication value in the horizontal direction; or the second receiver 15 can be installed, so that the first receiver 5 and the second receiver 15 calibrate the indication value in the height direction and the indication value in the horizontal direction respectively.

[0026] As another embodiment of the utility model: the first support plate 10 and the second support plate 12 are both provided with a level 9.

[0027] One embodiment of the first leveling mechanism 1: the first leveling mechanism 1 comprises a mounting plate 011, and the lower end of the mounting plate 011 is provided with a plurality of height adjustment legs 012. Specifically, the plurality of height adjustment legs 012 are tripods.

[0028] As another embodiment of the utility model: the structure of the second leveling mechanism 2 is the same as that of the first leveling mechanism 1.

[0029] The installation process of the calibration device of the satellite positioning displacement measurement system is as follows:

[0030] (1) make the upper surface of the mounting plate 011 horizontal through the height adjustment legs 012:

[0031] (2) install the first linear motion mechanism 3 on the mounting plate 011, and the axis of the first linear motion mechanism 3 is perpendicular to the upper surface of the mounting plate 011.

[0032] (3) install two levels 9 in a perpendicular manner on the upper end of the first linear motion mechanism 3.

[0033] (4) fix the first receiver 5 on the first support plate 10 through the connecting rod 14, and the first support plate 10 is installed on the slider 200 of the first linear motion mechanism 3.

[0034] (5), the second linear motion mechanism 4 is installed on the mounting plate 011, and the axis of the second linear motion mechanism 4 is parallel to the upper surface of the mounting plate 011.

[0035] (6), three levels 9 are installed along the length direction of the first linear motion mechanism 3 at the upper end of the first linear motion mechanism 3.

[0036] (7), the first receiver 5 or the second receiver 15 is fixed on the second support plate 12 through the connecting rod 14, and the second support plate 12 is installed on the sliding block 200 of the second linear motion mechanism 4.

[0037] (8), the first laser tracker target ball 6 is installed on the first support plate 10 through the first support plate 11, and when the first receiver 5 moves up and down along with the sliding block 200, the first laser tracker target ball 6 can receive the measuring laser beam of the laser tracker 8 without obstruction.

[0038] (9), the second laser tracker target ball 7 is installed on the second support plate 12 through the second support plate 13, and when the first receiver 5 or the second receiver 15 moves horizontally along with the sliding block 200, the second laser tracker target ball 7 can receive the measuring laser beam of the laser tracker 8 without obstruction.

[0039] The utility model also provides a kind of using method of calibration device of the satellite positioning displacement measurement system comprising above, comprising the following steps:

[0040] The first receiver 5 in the satellite positioning displacement measurement system is placed in a room outdoor, and the first receiver 5 is started to preheat;

[0041] The indication of the displacement measurement system elevation direction is calibrated, and the indication of the displacement measurement system horizontal direction is calibrated;Wherein, the indication of the displacement measurement system elevation direction calibration includes the following steps:

[0042] S1: by observing the level 9 on the first linear motion mechanism 3 and the level 9 on the first support plate 10, the height adjusting leg 012 below the mounting plate 011 is adjusted, so that the guide rail 100 of the first linear motion mechanism 3 is perpendicular to the horizontal plane;

[0043] S2: the laser tracker 8 is started to preheat, and the light outlet of the laser tracker 8 and the receiving angle of the first laser tracker target ball 6 are adjusted, so that the first laser tracker target ball 6 can receive the measuring laser beam of the laser tracker 8 when moving up and down;

[0044] S3: drive the first receiver 5 to move to the measuring point V0 by the first linear motion mechanism 3, in the measuring point V0, the first receiver 5 is located at the lower end of the guide rail 100, closest to the mounting plate 011, the indication value of the first receiver 5 in the Z-axis direction is h0mm, and the reading of the laser tracker 8 in the vertical direction is zeroed;

[0045] S4: drive the first receiver 5 to move upward to the measuring point V1 by the first linear motion mechanism 3, in the measuring point V1, the indication value of the first receiver 5 in the Z-axis direction is h1mm, and the moving distance reading of the laser tracker 8 in the vertical direction is z1mm; the indication value error of the first receiver 5 in the measuring point V1 is (h1-h0-z1)mm;

[0046] S5: drive the first receiver 5 to move upward to complete the calibration of the remaining 8 measuring points by the first linear motion mechanism 3, in the measuring point V i , the indication value of the first receiver 5 in the Z-axis direction is h i mm, and the moving distance reading of the laser tracker 8 in the vertical direction is z i mm; the indication value error of the first receiver 5 in the measuring point V i is (h i -h0-z i )mm; wherein, 2≤i≤10;

[0047] S6: the calibration of the first receiver 5 in the height direction is completed;

[0048] S7: repeat steps S3-S6 to complete the calibration of the indication value error of the other receivers of the displacement measurement system in the height direction at each measuring point;

[0049] The indication value calibration of the displacement measurement system in the horizontal direction includes the following steps:

[0050] Install the first receiver 5 on the second support plate 12 through the connecting rod 14;

[0051] S1: adjust the height adjusting leg 012 below the mounting plate 011 to make the guide rail 100 of the second linear motion mechanism 4 parallel to the horizontal plane by observing the level 9 on the second linear motion mechanism 4 and the level 9 on the second support plate 12;

[0052] S2: adjust the light outlet of the laser tracker 8 and the receiving angle of the second laser tracker target ball 7 to enable the second laser tracker target ball 7 to receive the measuring laser beam of the laser tracker 8 when moving horizontally;

[0053] S3: drive the first receiver 5 to move to the measuring point V0 by the second linear motion mechanism 4, in the measuring point V0, the first receiver 5 is closest to the motor 300 of the second linear motion mechanism 4, the measuring value of the first receiver 5 is a0mm, and the reading of the laser tracker 8 in the horizontal direction is zeroed; and respectively are the indicating values of the first receiver 5 in the X-axis direction and the Y-axis direction at the measuring point V0;

[0054] S4: drive the first receiver 5 to move horizontally to the measuring point V1 by the second linear motion mechanism 4, in the measuring point V1, the measuring value of the first receiver 5 is a1mm, and the moving distance reading of the laser tracker 8 in the horizontal direction is b1mm; the indicating value error of the first receiver 5 at the measuring point V1 is: (a1-a0-b1) mm; and respectively are the indicating values of the first receiver 5 in the X-axis direction and the Y-axis direction at the measuring point V1;

[0055] S5: drive the first receiver 5 to move horizontally to complete the calibration of the remaining 8 measuring points by the second linear motion mechanism 4, in the measuring point V i , the measuring value of the first receiver 5 is a i mm, and the moving distance reading of the laser tracker 8 in the horizontal direction is b i mm; the indicating value error of the first receiver 5 at the measuring point V2 is: (a i -a0-b i ) mm; wherein, 2≤i≤10, and respectively are the indicating values of the first receiver 5 in the X-axis direction and the Y-axis direction at the measuring point V i ;

[0056] S6: the calibration of the first receiver 5 in the horizontal direction is completed;

[0057] S7: repeat steps S3-S6 to complete the calibration of the indicating value errors of the other receivers of the displacement measurement system at each measuring point in the horizontal direction.

[0058] In the indicating value calibration in the vertical direction and the indicating value calibration in the horizontal direction of the displacement measurement system, the distance between adjacent two measuring points is 100mm. That is, the first receiver 5 is calibrated at the points of 100mm, 200mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm and 1000mm in the vertical direction, and the first receiver 5 is calibrated at the points of 100mm, 200mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm and 1000mm in the horizontal direction.

[0059] The calibration device of this invention uses a laser tracker as the main standard, effectively ensuring calibration accuracy and measurement range. A lead screw and slider linear motion module drives the receiver's movement, ensuring both the economy of the calibration device and method, while also providing good range scalability. The designed calibration method effectively replicates the actual usage of a satellite positioning displacement measurement system, further improving calibration accuracy. This results in a maximum permissible error of better than ±0.1mm in both the horizontal and vertical directions.

[0060] This invention achieves a modular design for the calibration device, reducing assembly difficulty. The component structure design fully considers interchangeability, reducing the difficulty of part processing and effectively lowering manufacturing costs. This invention's calibration device has good installation and expandability, covering the vast majority of satellite positioning displacement measurement systems on the market. Final calibration experiment results show that the calibration device and calibration method of this invention meet the requirements of relevant standards and technical documents, thus making the calibration device and calibration method of this invention highly applicable and widely applicable.

[0061] Specifically:

[0062] (1) The calibration device of this utility model has good metrological characteristics, applicability to the customer's site environment, and economical manufacturing and assembly. The horizontal measurement range of the calibration device reaches (0-1000) mm, and the vertical measurement range reaches (0-1000) mm.

[0063] (2) The main standard of the calibration device and calibration method of this utility model will be a laser tracker with a measurement range of (0-80)m, MPE: ±(15+6L)μm, L: unit m. Therefore, theoretically, the maximum allowable error of the calibration device can be better than ±0.1mm, and the measurement range of the calibration device designed in this utility model has good scalability.

[0064] (3) This utility model adopts a modular design, which divides the calibration device into a main standard module and a receiver drive module of the displacement measurement system, thereby further enhancing the applicability of the calibration device to the customer's field environment.

[0065] (4) The calibration device of this utility model can be used in complex and harsh weather conditions (rain and snow) at the customer's site, which further enhances the applicability of the calibration device;

[0066] (5) Based on the actual usage state of the displacement measurement system, this utility model designs a calibration method that matches the calibration device, which effectively ensures the calibration accuracy;

[0067] (6) The calibration device and the calibration method designed in the utility model effectively reproduce the actual use state of the displacement measurement system when the calibration is implemented, and the calibration precision is greatly improved.

[0068] (7) After the calibration test verification, the calibration device can realize the calibration of the small value of the satellite positioning displacement measurement system, and the measurement characteristics of the calibration device in the horizontal direction and the elevation direction are as follows: measurement range: (0-1000) mm, MPE: ±0.09mm.

[0069] (8) The calibration device and the calibration method are simple to operate, have good controllability, and improve the work efficiency of the calibration of the displacement measurement system. Since the calibration device and the calibration method can implement the remote calibration mode, the risk of injury of the tester is effectively reduced.

[0070] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A calibration device for a satellite positioning displacement measurement system, characterized in that The leveling mechanism comprises a first leveling mechanism and a second leveling mechanism, the first leveling mechanism is provided with a first linear motion mechanism and a second linear motion mechanism, the first linear motion mechanism is provided with a first receiver and a first laser tracker target ball, the second linear motion mechanism is provided with a second laser tracker target ball, the first linear motion mechanism is used for driving the first laser tracker target ball to move up and down, the second linear motion mechanism is used for driving the second laser tracker target ball to move horizontally, and the second leveling mechanism is provided with a laser tracker matched with the first laser tracker target ball or the second laser tracker target ball.

2. The calibration apparatus for a satellite positioning displacement measurement system according to claim 1, characterized in that, The first linear motion mechanism is a lead screw and block linear motion module, and the upper end of the guide rail of the first linear motion mechanism is provided with two vertical level meters.

3. The calibration apparatus for a satellite positioning displacement measurement system according to claim 2, characterized in that, The slider of the first linear motion mechanism is fixed with a first support plate, the first receiver is mounted on the first support plate, the first laser tracker target ball is fixed on the first support plate through a first support plate, and the first support plate and the first support plate are both L-shaped plates.

4. The calibration apparatus of a satellite positioning displacement measurement system according to claim 3, characterized in that, The second linear motion mechanism is a lead screw and block linear motion module, and the upper end of the guide rail of the second linear motion mechanism is provided with multiple level meters.

5. The calibration apparatus of a satellite positioning displacement measurement system according to claim 4, characterized in that, The slider of the second linear motion mechanism is fixed with a second support plate, the second laser tracker target ball is fixed on the second support plate through a second support plate, and the second support plate is an L-shaped plate.

6. The calibration apparatus of a satellite positioning displacement measurement system according to claim 5, characterized in that, The first support plate and the second support plate are both provided with level meters.

7. The calibration apparatus of a satellite positioning displacement measurement system according to claim 6, characterized in that, The first leveling mechanism comprises a mounting plate, and the lower end of the mounting plate is provided with multiple height adjustment legs.

8. The calibration apparatus of a satellite positioning displacement measurement system according to claim 7, characterized in that, The structure of the second leveling mechanism is the same as that of the first leveling mechanism.

9. The calibration apparatus of a satellite positioning displacement measurement system according to claim 8, characterized in that, The first receiver is fixed on the first support plate through a connecting rod.

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