A theodolite calibration device and an auxiliary reading acquisition device

Abstract

The present invention discloses a theodolite verification device, which includes a workbench, a light-emitting device and an auxiliary reading acquisition device. The auxiliary reading acquisition device includes a guide rail support, a first image acquisition system, a transmission system, a travel limit switch and a control unit. The first camera of the first image acquisition system transmits the crosshair image of the theodolite aiming part collected to an image display device; the transmission system includes a connection mechanism and a driving device; the travel limit switch limits the first camera; the control unit controls the operation of the transmission system and the travel limit switch according to a preset rule. The auxiliary reading acquisition device of the theodolite verification device uses the first camera to replace the human eye to observe the field of view, which can reduce the labor intensity brought by manual observation; the transmission system controls the first camera to move together with the theodolite, improving the degree of automation, thereby improving the verification efficiency and reducing the workload. The present invention also discloses an auxiliary reading acquisition device for use in a theodolite verification device.

Description

Technical Field

[0001] The present invention relates to the field of geodetic observation, and particularly to a theodolite calibration device and an auxiliary reading acquisition device. Background Art

[0002] A theodolite is a measuring instrument designed based on the angle measurement principle for measuring horizontal angles and vertical angles. It can be used in construction, installation of large equipment, cadastral surveying, topographic surveying, and engineering surveys such as railways, highways, bridges, water conservancy, and mines. A theodolite calibration device is a metrological instrument used to calibrate various levels, theodolites, electronic theodolites, and total stations.

[0003] The existing theodolite calibration device includes a multi-tooth indexing table, a three-dimensional lifting table, and a fan-shaped device. The multi-tooth indexing table is installed on the three-dimensional lifting table, and the theodolite to be calibrated is placed on the multi-tooth indexing table. During use, through the eyepiece on the theodolite sighting part, the human eye observes the relative position of the two crosshairs in the field of view. By adjusting the vertical circle adjusting nut, the two crosshairs are made to sandwich a single wire in the vertical direction, thereby achieving accurate aiming. Then, the reading of the vertical circle on the theodolite display screen is read. According to the requirements of JJG100-2003 "Total Station Electronic Tacheometer", the calibration time does not exceed one year according to the usage situation. There are a total of 12 calibration items for the theodolite, namely 1. Correctness of the rotation of the sighting part, 2. Perpendicularity of the telescope optical axis to the horizontal axis, 3. Aiming error C, 4. Horizontal axis error i, 5. Vertical circle index error, 6. Compensation range of the compensator, 7. Zero position error of the compensator, 8. Compensation error of the compensator, 9. Operating error of the telescope focusing, 10. Coincidence degree of the optical plummet axis and the vertical axis, 11. Standard deviation of the horizontal direction in one set of observations, 12. Standard deviation of the vertical angle measurement in one set of observations. Therefore, a large amount of calibration data needs to be collected and read for theodolite calibration. In the existing technology, aiming is observed through the human eye in the field of view, and manual reading is prone to reading errors. During long-term and large-scale calibration processes, it is inevitable that the calibration personnel will experience eye fatigue. The eyes need to rest, which will lengthen the calibration time and result in relatively low calibration efficiency. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a theodolite calibration device that overcomes or at least partially solves the above problems.

[0005] A theodolite calibration device includes: a workbench, a light-emitting device, and an auxiliary reading acquisition device. The workbench is arranged between the light-emitting device and the auxiliary reading acquisition device. The auxiliary reading acquisition device includes a guide rail bracket, a first image acquisition system, a transmission system, a travel limit switch, and a control unit, wherein:

[0006] The first image acquisition system includes an arc-shaped guide rail, a first camera, and an image display device. The arc-shaped guide rail is fixed on the guide rail bracket. The first camera is slidably connected to the arc-shaped guide rail. The first camera is electrically connected to the image display device and transmits the crosshair image on the collimator part of the theodolite to the image display device.

[0007] The transmission system includes a connection mechanism connected to the first camera and a driving device connected to the connection mechanism.

[0008] The travel limit switch is arranged on the guide rail bracket to limit the first camera.

[0009] The control unit is electrically connected to the transmission system and the travel limit switch, and controls the operation of the transmission system and the travel limit switch according to a preset rule.

[0010] Further, the guide rail bracket includes a first bracket, a connecting shaft, and a first fan-shaped surface. The connecting shaft is perpendicularly connected to the first bracket. The first fan-shaped surface is connected to the connecting shaft and is used to fix the arc-shaped guide rail.

[0011] Further, the guide rail bracket further includes a lifting platform. The lifting platform includes a base, a lifting shaft, and a tabletop. The lifting shaft connects the base and the tabletop. The tabletop is connected to the first bracket.

[0012] Further, the control unit includes a programmable logic controller, a switching power supply, and a control switch. The programmable logic controller is electrically connected to the switching power supply and the control switch. The programmable logic controller is electrically connected to the transmission system and the travel limit switch.

[0013] Further, the auxiliary reading acquisition device further includes a second image acquisition system, which acquires the dial image of the theodolite display screen, identifies the data in the image, and records it.

[0014] Further, the second image acquisition system includes a second camera and a character recognition module. The second camera acquires the image of the dial of the theodolite display screen and transmits the acquired image to the character recognition module. The character recognition module identifies the data in the image and enters the data into the character recognition module.

[0015] Further, the travel limit switch includes the same number of photoelectric switches as the light-emitting device, and the photoelectric switches are evenly arranged along the arc-shaped guide rail.

[0016] Further, the connection mechanism includes a lead screw and a slider connected to the lead screw. The lead screw is connected to the driving device. The slider is connected to the first camera.

[0017] Further, the driving device adopts a motor or a cylinder.

[0018] The present invention also discloses an auxiliary reading acquisition device for a theodolite calibration device, which includes a guide rail bracket, a first image acquisition system, a transmission system, a travel limit switch, and a control unit, wherein:

[0019] The first image acquisition system includes an arc guide rail, a first camera, and an image display device. The arc guide rail is fixed on the guide rail bracket. The first camera is slidably connected to the arc guide rail. The first camera is electrically connected to the image display device and transmits the crosshair image on the collimator of the theodolite collected to the image display device.

[0020] The transmission system includes a connection mechanism connected to the first camera and a driving device connected to the connection mechanism.

[0021] The travel limit switch is arranged on the guide rail bracket to limit the first camera.

[0022] The control unit is electrically connected to the transmission system and the travel limit switch, and controls the operation of the transmission system and the travel limit switch according to a preset rule.

[0023] Further, the guide rail bracket includes a first bracket, a connecting shaft, and a first fan-shaped surface. The connecting shaft is perpendicularly connected to the first bracket. The first fan-shaped surface is connected to the connecting shaft and is used to fix the arc guide rail.

[0024] Further, the guide rail bracket further includes a lifting platform. The lifting platform includes a base, a lifting shaft, and a tabletop. The lifting shaft connects the base and the tabletop. The tabletop is connected to the first bracket.

[0025] Based on the above technical solutions, the beneficial effects of the present invention compared with the prior art are:

[0026] The theodolite verification device disclosed by the present invention includes a workbench, a light-emitting device, and an auxiliary reading acquisition device. The workbench is arranged between the light-emitting device and the auxiliary reading acquisition device. The auxiliary reading acquisition device includes a guide rail bracket, a first image acquisition system, a transmission system, a travel limit switch, and a control unit. The first image acquisition system acquires the crosshair image on the alidade of the theodolite. When aiming, one only needs to look at the acquired image to adjust the vertical circle adjusting nut, so that the two crosshairs clamp a single crosshair in the vertical direction, and accurate aiming can be achieved. The theodolite verification device is newly added with an auxiliary reading acquisition device. Using the first camera to replace the human eye to observe the field of view can reduce the labor intensity brought by manual observation. The transmission system is electrically connected to the control unit and can control the first camera to move together with the rotation of the theodolite, ensuring that the first camera, the alidade of the theodolite, and the target light pipe being aimed are on the same straight line to accurately obtain a clear crosshair image, improving the automation degree of the verification device, thereby improving the verification efficiency and reducing the workload of the verification personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic structural diagram of a theodolite verification device in some embodiments;

[0028] Figure 2 FIG. is a schematic structural diagram of a control unit in some embodiments;

[0029] Figure 3 FIG. is a flowchart of the control unit controlling the motor to work in some embodiments;

[0030] Figure 4 FIG. is a schematic structural diagram of an auxiliary reading acquisition device in some embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Embodiment 1

[0033] As Figure 1 shown, a theodolite verification device includes: a workbench 10, a light-emitting device 20, and an auxiliary reading acquisition device 30. The workbench 10 is arranged between the light-emitting device 20 and the auxiliary reading acquisition device 30. Among them:

[0034] The workbench 10 includes a multi-tooth indexing table 11 and a three-dimensional lifting table 12. The multi-tooth indexing table 11 is placed on the three-dimensional lifting table 12, and the multi-tooth indexing table 11 carries the theodolite 13 to be inspected.

[0035] The light-emitting device 20 includes a second fan-shaped surface 21, a second support 22, and five light tubes 23. The second fan-shaped surface 21 is connected to the second support 22, and the five light tubes 23 are evenly arranged on the second fan-shaped surface 21. The intersection of the optical axes of the five light tubes 23 is the intersection of the collimating part 131 of the theodolite 13 and the horizontal axis.

[0036] The auxiliary reading acquisition device 30 includes a guide rail support 31, a first image acquisition system 32, a transmission system 33, a travel limit switch 34, and a control unit 35, where:

[0037] The first image acquisition system 32 includes an arc-shaped guide rail 321, a first camera 322, and an image display device. The arc-shaped guide rail 321 is fixed on the guide rail support 31, the first camera 322 is slidably connected to the arc-shaped guide rail 321, and the first camera 322 is electrically connected to the image display device to transmit the crosshair image collected on the collimating part 131 of the theodolite 13 to the image display device. In some embodiments, the first camera 322 may further include a first camera 322 body and a camera base, the camera base is slidably connected to the arc-shaped guide rail 321, and the first camera 322 body is connected to the camera base.

[0038] The transmission system 33 includes a connection mechanism 332 connected to the first camera 322 and a driving device 331 connected to the connection mechanism 332. In some embodiments, the connection mechanism 332 includes a lead screw 3321 and a slider 3322 connected to the lead screw 3321. The lead screw 3321 is connected to the driving device 331, and the slider 3322 is connected to the first camera 322. The driving device 331 may employ a motor or a cylinder.

[0039] The travel limit switch 34 is provided on the guide rail support 31 to limit the first camera 322. In some embodiments, the travel limit switch 34 includes the same number of photoelectric switches 341 as the light tubes 23, and the photoelectric switches 341 are evenly arranged along the arc-shaped guide rail 321. In this embodiment, five light tubes 23 are used in the light-emitting device 20, so five groups of photoelectric switches 341 are also used. Specifically, the five groups of photoelectric switches 341 are evenly distributed on a circle with a radius of 50 cm centered at the intersection of the horizontal center line of the central light tube 23 among the five light tubes 23 and the vertical center line of the three-dimensional lifting table 12, and the included angle between adjacent two photoelectric switches 341 is 15°39′7.8″.

[0040] The control unit 35 (not shown in the figure) is electrically connected to the transmission system 33 and the travel limit switch 34, and controls the operation of the transmission system 33 and the travel limit switch 34 according to a preset rule.

[0041] To clearly describe the working process of this theodolite verification device, the following takes the detection item of "standard deviation of vertical angle measurement in one set" as an example for detailed description:

[0042] Step 1: Place the instrument under test on the multi-tooth dividing table 11 of the calibration device and connect it through the centering nut.

[0043] Step 2: Level the instrument under test by adjusting the three base angle screws of the theodolite 13, ensuring that the bubbles in the spirit levels in two directions of the instrument under test are centered and still centered after rotating 180°.

[0044] Step 3: Loosen the vertical circle locking nut, rotate the alidade 131, roughly aim at the aiming target 1 (numbered 1, 2, 3, 4, 5 from top to bottom in sequence), and then lock the nut.

[0045] Step 4: The first camera 322 directly displays the crosshair image in the field of view on a large-size display screen. Just look at the display screen with the human eye, and then manually adjust the vertical circle adjusting nut to make the two crosshairs clamp a single crosshair in the vertical direction, so as to achieve accurate aiming.

[0046] Step 5: Record the reading of the vertical circle on the display screen of the theodolite 13 into a table.

[0047] Step 6: To collect multiple groups of data, repeat Step 4 and Step 5.

[0048] Step 7: Repeat Step 3 to Step 5 to complete the aiming and reading of all five targets, which means completing one set of observations. A total of four sets of observations need to be completed.

[0049] Step 8: Process the obtained data to obtain the standard deviation of the vertical angle measurement for one set of observations, and then determine whether this item meets the requirements according to the error range.

[0050] During the rotation of the alidade 131 of the theodolite 13, to obtain an image with the first camera 322, it is also necessary to require the first camera 322 to move together with the alidade 131. The alidade 131 of the theodolite 13 is operated manually. In this patent, since the aiming position of the alidade 131 is known in advance each time, the drive system 33 is used to realize the automatic movement of the first camera 322.

[0051] The control unit 35 (not shown in the figure) controls the operation of the drive system 33 and the travel limit switch 34 according to the following rules. The working process of the drive system 33 and the travel limit switch 34 is checked and described in detail below. In this embodiment, the driving device 331 uses a motor:

[0052] The first step: The motor receives the programmed instruction from the control unit 35 and rotates.

[0053] The second step: The rotation of the motor drives the lead screw 3321 to rotate.

[0054] In the third step, the slider 3322 on the lead screw 3321 moves linearly along the lead screw 3321, and at this time, it moves downward.

[0055] In the fourth step, the linear motion of the slider 3322 is transmitted to the first camera 322, causing it to move downward along the arc-shaped guide rail 321.

[0056] In the fifth step, during the process of the first camera 322 moving towards the No. 5 photoelectric switch 341 (numbered 1, 2, 3, 4, 5 from top to bottom in sequence), the other photoelectric switches 341 are in the disabled state, and only the No. 5 photoelectric switch 341 is in the enabled state. When the first camera 322 moves to the position of the No. 5 photoelectric switch 341, since the optical signal between the photoelectric switches 341 is blocked by the first camera 322, the photoelectric switch 341 outputs a switching signal to the control unit 35.

[0057] In the sixth step, after detecting the switching signal given by the photoelectric switch 341, the control unit 35 stops the rotation of the motor, so that all the transmission systems 33 stop, causing the first camera 322 to stop at the position of the No. 5 photoelectric switch 341. Thus, the crosshairs inside the alidade 131 of the theodolite 13 can be obtained again, and the crosshair image can be observed on the display screen.

[0058] In the seventh step, by repeating the first step to the sixth step, the first camera 322 can automatically move at five positions, so as to follow the movement of the alidade 131.

[0059] The theodolite verification device disclosed by the present invention includes a workbench 10, a light-emitting device 20, and an auxiliary reading and acquisition device 30. The workbench 10 is arranged between the light-emitting device 20 and the auxiliary reading and acquisition device 30. The auxiliary reading and acquisition device 30 includes a guide rail bracket 31, a first image acquisition system 32, a transmission system 33, a travel limit switch 34, and a control unit 35. The first image acquisition system 32 acquires the crosshair image on the alidade 131 of the theodolite 13. When aiming, only need to look at the acquired image to adjust the vertical circle adjusting nut, so that the two crosshairs clamp a single crosshair in the vertical direction, and accurate aiming can be achieved. The theodolite verification device newly adds an auxiliary reading and acquisition device, uses the first camera 322 to replace the human eye to observe the field of view, which can reduce the labor intensity brought by manual observation; the transmission system 33 is electrically connected to the control unit 35, which can control the first camera 322 to move together with the rotation of the theodolite 13, ensuring that the first camera 322, the alidade 131 of the theodolite 13, and the target light pipe 23 being aimed are on the same straight line, so as to accurately obtain a clear crosshair image, improving the automation degree of the verification device, improving the automation degree of the verification device, and further improving the verification efficiency and reducing the workload of the verification personnel.

[0060] In some embodiments, the guide rail bracket 31 includes a first bracket 311, a connecting shaft 312, and a first fan-shaped surface 313. The connecting shaft 312 is perpendicularly connected to the first bracket 311. The first fan-shaped surface 313 is connected to the connecting shaft 312, and the arc-shaped guide rail 321 is fixed on the first fan-shaped surface 313. The guide rail bracket 31 further includes a lifting platform 314, which includes a base 3141, a lifting shaft 3142, and a tabletop 3143. The lifting shaft 3142 connects the base 3141 and the tabletop 3143, and the tabletop 3143 is connected to the first bracket 311. The lifting platform 314 can adjust the height of the first bracket 311. Before aiming, the connecting shaft 312, the horizontal axis of the theodolite 13, and the horizontal light pipe 23 can be adjusted to the same horizontal line to ensure the accuracy of aiming.

[0061] In some embodiments, as Figure 2 shown, the control unit 35 includes a programmable logic controller 351, a switching power supply 352, a control switch 355, an indicator light 353, and a button 354. The programmable logic controller 351 is electrically connected to the switching power supply 352, the control switch 355, the indicator light 353, and the button 354. The switching power supply 352 supplies power to the programmable logic controller 351. The control switch 355 sends a switching signal to the programmable logic controller 351. The signal of the photoelectric switch 341 is transmitted to the programmable logic controller 351 and then displayed through the indicator light 353. The programmable controller sends a motor control signal to the button 354. Specifically, the working process of the control unit 35 for controlling the motor is as Figure 3 shown:

[0062] (1) Determine whether the control switch 353 sends a switching signal. If no switching signal is sent, return to the previous step; if a switching signal is sent, the corresponding on / off indicator light 353 lights up;

[0063] (2) Set the photoelectric switch 341;

[0064] (3) The programmable controller sends a motor control signal to the button 354;

[0065] (4) Take a reading and determine whether the reading is completed. If the reading is not completed, take the reading again; if the reading is completed, proceed to the next step.

[0066] (5) Determine whether the verification is completed. If the verification is completed, end; if the verification is not completed, return to step (1) and repeat steps (1)-(4).

[0067] The control unit 35 controls the motor to drive the first camera 322 to move, ensuring that the first camera 322, the collimation part 131 of the theodolite 13, and the target light pipe 23 being sighted are on the same straight line, so as to accurately obtain a clear crosshair image, improve the automation degree of the verification device, reduce the workload of the verification personnel, and coordinate the logical relationship of the entire verification process, enabling the entire verification process to proceed orderly.

[0068] In some embodiments, the auxiliary reading acquisition device 30 further includes a second image acquisition system. The second image acquisition system includes a second camera and a character recognition module. The second camera acquires an image of the dial on the display screen of the theodolite 13 and transmits the acquired image to the character recognition module. The character recognition module recognizes the data in the image and enters the data into the character recognition module. The character recognition module can adopt existing feasible methods to recognize the data in the image.

[0069] This second image acquisition system directly acquires an image of the dial, recognizes the data in the image, and then automatically enters the data into the character recognition module, replacing the process of manually recording data in step five of the above verification process, and reducing the labor intensity brought by manual recording and data entry.

[0070] Embodiment 2

[0071] As Figure 4 shown, an auxiliary reading acquisition device 30 for a theodolite verification device includes a guide rail bracket 31, a first image acquisition system 32, a transmission system 33, a travel limit switch 34, and a control unit 35, wherein:

[0072] The first image acquisition system 32 includes an arc guide rail 321, a first camera 322, and an image display device. The arc guide rail 321 is fixed on the guide rail bracket 31. The first camera 322 is slidably connected to the arc guide rail 321. The first camera 322 is electrically connected to the image display device and transmits the crosshair image on the collimation part 131 of the theodolite 13 to the image display device.

[0073] The transmission system 33 includes a connection mechanism 332 connected to the first camera 322 and a driving device 331 connected to the connection mechanism 332.

[0074] The travel limit switch 34 is arranged on the guide rail bracket 31 to limit the first camera 322.

[0075] The control unit 35 (not shown in the figure) is electrically connected to the transmission system 33 and the travel limit switch 34, and controls the operation of the transmission system 33 and the travel limit switch 34 according to a preset rule.

[0076] The auxiliary reading acquisition device 30 includes a guide rail bracket 31, a first image acquisition system 32, a transmission system 33, a travel limit switch 34, and a control unit 35. The first image acquisition system 32 acquires the crosshair image on the sighting part 131 of the theodolite 13. When sighting, one only needs to look at the acquired image to adjust the vertical circle adjusting nut, so that the two crosshairs clamp a single crosshair in the vertical direction, and accurate sighting can be achieved. For this auxiliary reading acquisition device, using the first camera 322 to replace the human eye to observe the field of view can reduce the labor intensity brought by manual observation; the transmission system 33 is electrically connected to the control unit 35, and can control the first camera 322 to move together with the rotation of the theodolite 13, ensuring that the first camera 322, the sighting part 131 of the theodolite 13, and the target light pipe 23 being sighted are on the same straight line, so as to accurately obtain a clear crosshair image, improving the automation degree of the calibration device, and further improving the calibration efficiency and reducing the workload of the calibration personnel.

[0077] In some embodiments, the guide rail bracket 31 includes a first bracket 311, a connecting shaft 312, and a first fan-shaped surface 313. The connecting shaft 312 is perpendicularly connected to the first bracket 311, the first fan-shaped surface 313 is connected to the connecting shaft 312, and an arc-shaped guide rail 321 is fixed on the first fan-shaped surface 313. The guide rail bracket 31 further includes a lifting platform 314. The lifting platform 314 includes a base 3141, a lifting shaft 3142, and a table top 3143. The lifting shaft 3142 connects the base 3141 and the table top 3143, and the table top 3143 is connected to the first bracket 311. The lifting platform 314 can adjust the height of the first bracket 311. Before sighting, the connecting shaft 312, the horizontal axis of the theodolite 13, and the horizontal light pipe 23 can be adjusted to the same horizontal line to ensure the accuracy of sighting.

[0078] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The appended method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy recited.

[0079] In the above detailed description, various features are combined in a single embodiment to simplify the present disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are expressly stated in each claim. On the contrary, as reflected by the appended claims, the present invention resides in less than all of the features of a single disclosed embodiment. Accordingly, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the present invention.

[0080] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but those of ordinary skill in the art should recognize that the various embodiments can be further combined and arranged. Accordingly, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. In addition, with respect to the term "comprising" as used in the specification or claims, this term is inclusive in a manner similar to the term "including", as is explained when "including" is used as a transitional word in a claim. Further, any use of the term "or" in a claim of the specification is to mean "non-exclusive or".

Claims

1. A theodolite calibration device, characterized in that, Comprising: A workbench, a lighting device, and an auxiliary reading acquisition device. The workbench is disposed between the lighting device and the auxiliary reading acquisition device. The auxiliary reading acquisition device includes a guide rail bracket, a first image acquisition system, a transmission system, a travel limit switch, and a control unit, wherein: The first image acquisition system includes an arc-shaped guide rail, a first camera, and an image display device. The arc-shaped guide rail is fixed to the guide rail bracket. The first camera is slidably connected to the arc-shaped guide rail. The first camera is electrically connected to the image display device and transmits the crosshair image on the theodolite sighting part collected to the image display device; The transmission system includes a connection mechanism connected to the first camera and a driving device connected to the connection mechanism; The travel limit switch is disposed on the guide rail bracket to limit the first camera; The control unit is electrically connected to the transmission system and the travel limit switch, and controls the operation of the transmission system and the travel limit switch according to a preset rule. The control unit is at least used to control the first camera in the first image acquisition system to keep acquiring images of the theodolite sighting part, and control the first camera to move together with the rotation of the theodolite, ensuring that the first camera, the theodolite sighting part, and the target light pipe being sighted are on the same straight line.

2. The theodolite calibration device according to claim 1, characterized in that The guide rail bracket includes a first bracket, a connecting shaft, and a first fan-shaped surface. The connecting shaft is vertically connected to the first bracket. The first fan-shaped surface is connected to the connecting shaft and is used to fix the arc-shaped guide rail.

3. The theodolite calibration device according to claim 2, characterized in that, The guide rail bracket further includes a lifting platform. The lifting platform includes a base, a lifting shaft, and a tabletop. The lifting shaft connects the base and the tabletop. The tabletop is connected to the first bracket.

4. The theodolite verification device according to claim 1, characterized in that, It further includes a second image acquisition system that acquires the dial image of the theodolite display screen, identifies the data in the image, and records it.

5. The theodolite calibration device according to claim 4, characterized in that, The second image acquisition system includes a second camera and a character recognition module. The second camera acquires the image of the dial of the theodolite display screen and transmits the acquired image to the character recognition module. The character recognition module identifies the data in the image and enters the data into the character recognition module.

6. The theodolite calibration device according to claim 1, characterized in that, The travel limit switch includes the same number of photoelectric switches as the lighting device, and the photoelectric switches are evenly arranged along the arc-shaped guide rail.

7. The theodolite verification device according to claim 1, characterized in that, The connection mechanism includes a lead screw and a slider connected to the lead screw. The lead screw is connected to the driving device. The slider is connected to the first camera.

8. An auxiliary reading acquisition device is used in a theodolite calibration device, and is characterized in that, Including a guide rail bracket, a first image acquisition system, a transmission system, a travel limit switch, and a control unit, wherein: The first image acquisition system includes an arc-shaped guide rail, a first camera, and an image display device. The arc-shaped guide rail is fixed to the guide rail bracket. The first camera is slidably connected to the arc-shaped guide rail. The first camera is electrically connected to the image display device and transmits the crosshair image on the theodolite sighting part collected to the image display device; The transmission system includes a connection mechanism connected to the first camera and a driving device connected to the connection mechanism; The travel limit switch is disposed on the guide rail bracket to limit the first camera; The control unit is electrically connected to the drive system and the travel limit switch, and controls the operation of the drive system and the travel limit switch according to preset rules. The control unit is at least used to control the first camera in the first image acquisition system to keep acquiring images of the theodolite aiming part, and control the first camera to move together with the rotation of the theodolite, ensuring that the first camera, the theodolite aiming part, and the target optical tube being aimed at are on the same straight line.

9. The auxiliary reading acquisition device according to claim 8, characterized in that, The guide rail bracket includes a first bracket, a connecting shaft, and a first fan-shaped surface. The connecting shaft is perpendicularly connected to the first bracket, and the first fan-shaped surface is connected to the connecting shaft and is used to fix the arc guide rail.

10. The auxiliary reading acquisition device according to claim 9, characterized in that, The guide rail bracket further includes a lifting platform, and the lifting platform includes a base, a lifting shaft, and a tabletop. The lifting shaft connects the base and the tabletop, and the tabletop is connected to the first bracket.

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