Total station

Abstract

The invention discloses a total station, and relates to the field of measuring instruments, the total station comprises a laser range finder, the top of the laser range finder is provided with a protective shell, the protective shell is internally provided with a power supply battery, the protective shell is internally provided with an MEMS-IMU module and a CPU module, the bottom of the laser range finder is provided with a display shell, and the display shell is provided with a display screen. A display screen and a control button are arranged on the display shell; and a handheld grip is mounted at the bottom of the display shell. According to the total station, through combined use of the laser range finder, the MEMS-IMU module and the CPU module, the equipment cost can be effectively reduced while the measurement function of an existing total station is achieved, and the total station is arranged in a handheld mode, so that the preparation work in the daily use process of the total station is less, and meanwhile, the total station is convenient to take, place and use.

Description

Technical Field

[0001] This invention relates to measuring instrument technology, specifically to a total station. Background Technology

[0002] A total station is a high-tech surveying instrument integrating optics, mechanics, and electronics. It is a surveying instrument that integrates the functions of measuring horizontal angles, vertical angles, distances (slope distances, horizontal distances), and elevation differences. It belongs to high-precision instruments and is mostly used in large-scale engineering surveying (bridges, tunnels, subways), cadastral surveying, precision engineering layout, and control point establishment.

[0003] Existing total stations require professional personnel to operate them, involving complex pre-measurement preparations such as setup, leveling, and alignment, making the preparation process time-consuming and labor-intensive. Furthermore, existing total stations are large and heavy, requiring numerous accessories, making them inconvenient to carry. Additionally, their high price limits their adaptability to small-scale projects or routine surveying by construction workers. Therefore, this application proposes a total station to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a total station to overcome the aforementioned shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a total station, including a laser rangefinder, wherein a protective shell is provided on the top of the laser rangefinder, a power supply battery is installed inside the protective shell, a MEMS-IMU module and a CPU module are provided inside the protective shell, and a display shell is installed on the bottom of the laser rangefinder, wherein a display screen and control buttons are provided on the display shell; A hand grip is installed at the bottom of the display housing.

[0006] Furthermore, the IMU in the MEMS-IMU module is a nine-axis IMU.

[0007] Furthermore, the bottom of the laser rangefinder is provided with an adjustment mechanism, which includes rotating seats symmetrically installed on both sides of the bottom of the laser rangefinder. A rotating shaft is fixedly connected to the display shell. The rotating shaft is rotatably connected between the two rotating seats. A movable groove is opened inside the rotating seat. A pressing shell is slidably connected to the opening of the movable groove. A supporting spring is fixedly connected between the pressing shell and the inner wall of the movable groove. The end of the rotating shaft extends into the movable groove, and a torsion spring is installed between the rotating shaft and the inner wall of the movable groove. When the rotating shaft rotates, the torsion spring is synchronously torsionally compressed.

[0008] Furthermore, a limiting shaft is fixedly connected to the end of the rotating shaft, and several limiting blocks are arranged in an annular shape at equal intervals on the surface of the limiting shaft away from the torsion spring. A limiting seat is fixedly connected to the inner wall of the pressing shell. A circular groove corresponding to the limiting shaft and the limiting blocks is opened on the surface of the limiting seat. Several straight grooves corresponding to the limiting blocks are opened in an annular shape inside the limiting seat. An auxiliary rod is slidably connected to the inner wall of the straight groove, and a limiting spring is fixedly connected between the auxiliary rod and the inner wall of the straight groove.

[0009] Furthermore, the straight groove is connected to the circular groove, and the end of the auxiliary rod passes through the straight groove and extends into the interior of the circular groove.

[0010] Furthermore, the surfaces of the auxiliary rod and the limiting block facing each other are provided with matching guide arc surfaces and limiting straight surfaces. When the display shell rotates to a vertical state away from the laser rangefinder, the rotating shaft drives the limiting block to rotate, causing the guide arc surface on its surface to rotate relative to and press against the guide arc surface on the auxiliary rod.

[0011] Furthermore, the width of the portion of the pressing shell located outside the active groove is greater than the width of the limiting block.

[0012] Furthermore, a positioning plate is fixedly connected between the two rotating seats. When the display shell rotates to be perpendicular to the laser rangefinder, the end face of the display shell abuts against the positioning plate.

[0013] Furthermore, the bottom surface of the laser rangefinder is provided with a receiving groove adapted to the hand grip.

[0014] Furthermore, the surface of the hand grip is provided with multiple sets of finger grooves, and the surface of the hand grip is covered with an anti-slip rubber sleeve.

[0015] Compared with the prior art, the total station provided by the present invention has the following beneficial effects: 1. This total station, through the combined use of a laser rangefinder, MEMS-IMU module and CPU module, can effectively reduce equipment costs while realizing the existing total station measurement functions. Furthermore, its handheld setup reduces preparation work during daily use and makes it easy to pick up and put away.

[0016] 2. This total station, through the use of the adjustment unit, can be used by unfolding the display shell and hand grip when needed, and can be folded and stored after use, thereby further reducing the overall size of the device and making it convenient for daily carrying and use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall top view structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall bottom view structure provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the protective shell provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall storage state structure provided in an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the rotating seat provided in an embodiment of the present invention; Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the structure of the limiting rod and the pressing shell in a separated state according to an embodiment of the present invention; Figure 8 This is a longitudinal cross-sectional view of the pressing shell and the limiting seat provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Laser rangefinder; 2. Protective housing; 3. Power supply battery; 4. MEMS-IMU module; 5. CPU module; 6. Display housing; 7. Display screen; 8. Control button; 9. Rotating base; 91. Rotating shaft; 92. Pressing housing; 93. Support spring; 94. Torsion spring; 95. Limiting shaft; 96. Limiting block; 97. Limiting seat; 98. Circular groove; 99. Straight groove; 910. Auxiliary rod; 911. Limiting spring; 912. Limiting straight surface; 913. Guide arc surface; 10. Hand grip; 11. Positioning plate; 12. Receiving groove; 13. Finger groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: Please see Figures 1-4A total station includes a laser rangefinder 1, a protective shell 2 on the top of the laser rangefinder 1, a power supply battery 3 installed inside the protective shell 2, a MEMS-IMU module 4 and a CPU module 5 installed inside the protective shell 2, and a display shell 6 installed at the bottom of the laser rangefinder 1, with a display screen 7 and control buttons 8 on the display shell 6. A hand grip 10 is mounted on the bottom of the display case 6.

[0022] It should be noted that the IMU in MEMS-IMU module 4 is a nine-axis IMU.

[0023] During measurement, the operator holds the handle 10 and presses the control button 8 with their thumb to input data and select options. Then, the operator points the laser rangefinder 1 to the point to be measured and confirms the measurement by pressing the control button 8, thereby obtaining the distance between the measurement position and the measurement point. This type of measurement is used for distance measurement in the process of planar measurement.

[0024] When it is necessary to measure the distance between two points in space, the distance between the two points and the measurement position is measured using the method described above. During the measurement process, the spatial angle between the two points is measured by the MEMS-IMU module 4. Then, the CPU module 5 integrates the acquired multi-source data and calculates the distance value between the two points.

[0025] It should be further explained that during the point distance calculation process, when the operator holds the device for detection, the wrist can be used as the origin of the coordinate system when rotating the wrist to drive the device to rotate at an angle. However, when the body is used as the axis of rotation, and the measurement is performed by rotating the body to drive the arm and the device to rotate, the body is used as the origin of the coordinate system. Therefore, before taking the measurement, the operator needs to input the distance value between the device and the body according to the actual selected method, so as to correct the origin of the coordinate system during the actual measurement process and ensure the accuracy of the actual measurement results.

[0026] Furthermore, this measurement and calculation method utilizes the MEMS-IMU module 4 to perform angle measurements, providing data support for the calculation. Then, the laser rangefinder 1 performs distance measurements, providing the distance data required for the calculation. Subsequently, the CPU module 5 integrates and calculates the data. This calculation method can not only be performed using attitude quaternions, but also convert the measured point data into coordinates of the inertial frame, and then use the distance formula between the two points for calculation. The above calculation methods are all commonly used methods, and will not be described in detail here.

[0027] Example 2: Please see Figures 5-8This embodiment provides a technical solution based on the above embodiments: An adjustment mechanism is provided at the bottom of the laser rangefinder 1. The adjustment mechanism includes rotating seats 9 symmetrically installed on both sides of the bottom of the laser rangefinder 1. A rotating shaft 91 is fixedly connected to the display housing 6. The rotating shaft 91 is rotatably connected between the two rotating seats 9. A movable groove is opened inside the rotating seat 9. A pressing shell 92 is slidably connected to the opening of the movable groove. A supporting spring 93 is fixedly connected between the pressing shell 92 and the inner wall of the movable groove. The end of the rotating shaft 91 extends into the movable groove, and a torsion spring 94 is installed between the rotating shaft 91 and the inner wall of the movable groove. When the rotating shaft 91 rotates, the torsion spring 94 is synchronously torsionally compressed. A limiting shaft 95 is fixedly connected to the end of the rotating shaft 91. Several limiting blocks 96 are arranged in a ring shape at equal intervals on the surface of the limiting shaft 95 away from the torsion spring 94. A limiting seat 97 is fixedly connected to the inner wall of the pressing shell 92. A circular groove 98 corresponding to the limiting shaft 95 and the limiting blocks 96 is opened on the surface of the limiting seat 97. Several straight grooves 99 corresponding to the limiting blocks 96 are opened in a ring shape inside the limiting seat 97. An auxiliary rod 910 is slidably connected to the inner wall of the straight groove 99. A limiting spring 911 is fixedly connected between the auxiliary rod 910 and the inner wall of the straight groove 99.

[0028] It should be noted that the straight groove 99 is connected to the circular groove 98, and the end of the auxiliary rod 910 passes through the straight groove 99 and extends into the interior of the circular groove 98.

[0029] Furthermore, the surfaces of the auxiliary rod 910 and the limiting block 96 facing each other are provided with matching guide arc surfaces 913 and limiting straight surfaces 912. When the display shell 6 rotates to a vertical state away from the laser rangefinder 1, the rotating shaft 91 drives the limiting block 96 to rotate, causing the guide arc surface 913 on its surface to rotate relative to and press against the guide arc surface 913 on the auxiliary rod 910.

[0030] It should be added that the width of the portion of the pressing shell 92 located outside the movable groove is greater than the width of the limiting block 96, so that when the pressing shell 92 is pressed, as it moves into the movable groove, it can push the auxiliary rod 910 to completely separate from the limiting block 96.

[0031] When it is necessary to open the display case 6, the operator directly rotates the display case 6 downwards until it is perpendicular to the laser rangefinder 1. When it is necessary to retract it, the operator presses the pressing case 92 on both sides to move it. The movement of the pressing case 92 causes the limiting seat 97 to move. The movement of the limiting seat 97 causes the auxiliary rod 910 to move and separate from the limiting block 96. At this time, the auxiliary rod 910 no longer restricts the rotation of the limiting block 96. Under the action of the torsion spring 94, the display case 6 rotates in the opposite direction and fits against the surface of the laser rangefinder 1, completing the retraction of the device.

[0032] Example 3: Please see Figure 6 This embodiment provides a technical solution based on the above embodiment: a positioning plate 11 is fixedly connected between the two rotating seats 9. When the display shell 6 is rotated to be perpendicular to the laser rangefinder 1, the end face of the display shell 6 abuts against the positioning plate 11, so that the display shell 6 can be easily rotated to a position perpendicular to the laser rangefinder 1 during the opening process, thereby facilitating subsequent measurement work.

[0033] Example 4: Please see Figure 2 This embodiment provides a technical solution based on the above embodiments: the bottom surface of the laser rangefinder 1 is provided with a receiving groove 12 that is adapted to the hand grip 10, so that when stored, the hand grip 10 will not interfere with the normal storage of the display shell 6, and the overall size of the stored device is small, making it easy to carry and use.

[0034] Example 5: Please see Figures 1-3 This embodiment provides a technical solution based on the above embodiments: the surface of the hand grip 10 is provided with multiple sets of finger grooves 13, and the surface of the hand grip 10 is covered with an anti-slip rubber sleeve, so that when the operator holds the hand, his palm and the four fingers other than the thumb work together to stably hold the whole device, so that the idle thumb can be used to press the control button 8, so that the measurement operation can be performed with one hand during the operation.

[0035] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A total station, characterized in that, Including laser range finder (1), the top of laser range finder (1) is provided with protective shell (2), the inside of protective shell (2) is installed with power supply battery (3), the inside of protective shell (2) is provided with MEMS-IMU module (4) and CPU module (5), the bottom of laser range finder (1) is installed with display shell (6), display shell (6) is provided with display screen (7) and control button (8) on it; The bottom of the display shell (6) is installed with a handheld handle (10).

2. A total station according to claim 1, characterized in that The IMU in the MEMS-IMU module (4) is a nine-axis IMU.

3. A total station according to claim 1, characterized in that The bottom of the laser range finder (1) is provided with an adjusting mechanism, the adjusting mechanism includes rotating seats (9) symmetrically installed on both sides of the bottom of the laser range finder (1), the rotating shaft (91) is fixedly connected to the display shell (6), the rotating shaft (91) is rotatably connected between the two rotating seats (9), the inside of the rotating seat (9) is provided with a movable slot, the slot opening of the movable slot is slidably connected with a pressing shell (92), the support spring (93) is fixedly connected between the pressing shell (92) and the inner wall of the movable slot, the end of the rotating shaft (91) extends into the movable slot, and the torsional spring (94) is installed between the rotating shaft (91) and the inner wall of the movable slot, when the rotating shaft (91) rotates, the torsional spring (94) is twisted and compressed synchronously.

4. A total station according to claim 3, characterized in that The end of the rotating shaft (91) is fixedly connected with a limiting shaft (95), the surface of the limiting shaft (95) is provided with a plurality of limiting blocks (96) at equal intervals in the form of a circular ring away from one end of the torsional spring (94), the inner wall of the pressing shell (92) is fixedly connected with a limiting seat (97), the surface of the limiting seat (97) is provided with a circular groove (98) corresponding to the limiting shaft (95) and the limiting block (96), the inside of the limiting seat (97) is provided with a plurality of straight grooves (99) corresponding to the limiting block (96) in the form of a circular ring, the inner wall of the straight groove (99) is slidably connected with an auxiliary rod (910), the limiting spring (911) is fixedly connected between the auxiliary rod (910) and the inner wall of the straight groove (99).

5. A total station according to claim 4, characterized in that The straight groove (99) is communicated with the circular groove (98), and the end of the auxiliary rod (910) extends into the circular groove (98) through the straight groove (99).

6. A total station according to claim 5, characterized in that The surface of the end of the auxiliary rod (910) and the limiting block (96) is provided with a matching guide arc surface (913) and a limiting straight surface (912), when the display shell (6) rotates to the perpendicular state away from the laser range finder (1), the rotating shaft (91) drives the limiting block (96) to rotate, so that the guide arc surface (913) on the surface of the limiting block (96) rotates relative to the guide arc surface (913) on the auxiliary rod (910) and is pressed.

7. A total station according to claim 6, characterized in that The width value of the pressing shell (92) outside the movable slot is greater than the width value of the limiting block (96).

8. A total station according to claim 7, characterized in that The two rotating seats (9) are fixedly connected with a positioning plate (11), when the display shell (6) is rotated to be perpendicular to the laser range finder (1), the end surface of the display shell (6) abuts against the positioning plate (11).

9. A total station according to claim 8, characterized in that The bottom surface of the laser range finder (1) is provided with a containing groove (12) matched with the handheld handle (10).

10. The total station of claim 1, wherein, The surface of the handheld handle (10) is provided with a plurality of groups of finger grooves (13), and the surface of the handheld handle (10) is covered with an antiskid rubber sleeve.

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