Ranging telescope calibration device

Abstract

The utility model relates to a calibration device for a ranging telescope. The calibration device comprises a device frame, and an optical fiber fixing frame and a ranging telescope mounting frame are arranged on the device frame. An upper computer is arranged on the device frame, the upper computer is provided with a serial port, and the serial port is connected with the ranging telescope to be calibrated through a signal line so as to realize information transmission between the upper computer and the ranging telescope to be calibrated. After the fixed-length optical fiber is damaged, the fixed-length optical fiber is replaced, and because the length of the replaced optical fiber is different from the length of the previous optical fiber, information such as the length of a new optical fiber and a basic compensation value needs to be input into an upper computer, and the information is transmitted to a ranging telescope to be calibrated through a serial port and a signal line for adjustment. Compared with the prior art, when the technical problem is solved, new parameter information can be written into the to-be-detected distance measuring telescope only through the upper computer, the workload of calibration personnel is greatly reduced, and the whole process is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of equipment calibration technology, specifically to a rangefinder telescope calibration device. Background Technology

[0002] A rangefinder telescope is a type of laser rangefinder that integrates a rangefinding system and a telescope system, allowing it to combine observation and measurement functions. It is a branch of laser rangefinders, or a long-range laser rangefinder. Its working principle is that the transmitter of the laser rangefinder emits a single laser pulse or a sequence of laser pulses towards the object being measured. After being reflected by the object, the laser returns to the detector of the rangefinder. The rangefinder calculates the round-trip time of the laser to obtain the distance between the rangefinder and the object being measured.

[0003] Rangefinder telescopes require calibration after a period of use. Currently, calibration is primarily achieved by measuring the length of a fixed optical fiber. The transmitter of the rangefinder telescope emits a laser beam, which is transmitted through a fixed-length optical fiber and then received by the detector. Optical fibers are prone to damage during use, requiring replacement. However, it's impossible to perfectly match the length of the replacement fiber; therefore, the rangefinder telescope's built-in fiber length parameters and the calculated basic compensation value must be readjusted based on the fiber length. Adjusting the built-in parameters requires writing this data into the telescope. Currently, this can only be done via a programmer through a download port, modifying the built-in program data for each product. This process is cumbersome, and with numerous specifications of devices requiring calibration, the workload is substantial. Utility Model Content

[0004] The purpose of this invention is to provide a rangefinding telescope calibration device to solve the technical problem in the prior art that the internal parameters of the rangefinding telescope need to be changed due to the replacement of the fiber optic cable length, resulting in a large workload and cumbersome operation.

[0005] To achieve the above objectives, the present invention provides a rangefinding telescope calibration device with the following technical solution: A rangefinding telescope calibration device includes a device frame, on which are provided an optical fiber fixing frame for mounting optical fibers of fixed length and a rangefinding telescope mounting frame for mounting a rangefinding telescope to be calibrated. A host computer is provided on the device frame, and the host computer has a serial port. The serial port is connected to the rangefinding telescope to be calibrated via a signal line to realize information transmission between the host computer and the rangefinding telescope to be calibrated.

[0006] The host computer is a touch screen display.

[0007] The fiber optic mounting bracket has two or more sets of mounting holes spaced horizontally, each set of mounting holes being used to fix the two ends of a corresponding fixed-length fiber optic cable; the ranging telescope mounting bracket is movably mounted on the device frame via a mounting mechanism, and the direction of movement of the ranging telescope mounting bracket is parallel to the direction of the spacing of the mounting holes.

[0008] The device frame is equipped with a guide rail, and a guide block is installed on the guide rail for horizontal guidance and movement. The rangefinding telescope mounting bracket is fixedly installed on the guide block. Mounting plates are provided at both ends of the guide rail on the device frame. A lead screw is rotatably installed on the mounting plate. A lead screw drive motor is provided on the device frame. The guide block is threadedly connected to the lead screw.

[0009] The rangefinder mounting bracket is equipped with a fixing structure for securing the rangefinder to be calibrated.

[0010] The rangefinder mounting bracket includes a base plate for placing the rangefinder to be calibrated, and a movable plate is provided on the rangefinder mounting bracket for vertical movement. The fixing structure includes a pressure column provided on the movable plate for downward fixing and pressing down on the rangefinder to be calibrated.

[0011] The pressure column is a spring column.

[0012] The number of pressure columns is at least three, and they are arranged in a triangular pattern.

[0013] Two limiting posts are spaced apart along the horizontal direction on the base plate.

[0014] Each of the pressure columns is mounted on the movable plate via an adjustment structure. The adjustment structure includes a pressure column mounting block for mounting the corresponding pressure column. The movable plate is provided with a first elongated hole extending horizontally, and the pressure column mounting block is provided with a second elongated hole extending in the front-back direction. Connecting bolts are inserted into the first and second elongated holes to fix the adjusted pressure column mounting block.

[0015] The beneficial effects of this invention are as follows: When a fixed-length optical fiber is damaged and needs to be replaced, since the replacement fiber is of different length than the original, the new fiber length and basic compensation values ​​need to be input into the host computer and transmitted to the ranging telescope to be calibrated via a serial port and signal line for adjustment. Compared with existing technologies, this invention addresses the above technical problems by allowing the new parameter information to be written into the ranging telescope under test solely through the host computer, greatly reducing the workload of calibration personnel, and the entire process is simple to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of a rangefinding telescope calibration device according to the present invention;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure after removing the guide rail sealing cover;

[0018] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 yes Figure 1 A structural diagram from another angle;

[0020] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0022] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The use of "belonging" in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this invention.

[0023] An embodiment of the ranging telescope calibration device of this utility model, such as... Figures 1-5 As shown, the device includes a frame 1, on which a fiber optic mounting bracket 2 and a ranging telescope mounting bracket 3 are mounted. The fiber optic mounting bracket 2 has three sets of mounting holes 11 spaced apart along the horizontal direction (specifically the left-right direction in the attached diagram), with two holes in each set, for fixing the two ends of a corresponding fixed-length fiber optic cable. The fixed-length fiber optic cable is U-shaped. This part of the structure is prior art, and its specific structure and calibration principle will not be described in detail in this embodiment.

[0024] The rangefinder telescope mounting bracket 3 is movably mounted on the device frame 1 via a mounting mechanism. The direction of movement of the rangefinder telescope mounting bracket 3 is parallel to the spacing direction of the mounting holes. The mounting mechanism includes a horizontal guide rail 24 mounted on the device frame 3, with a guide block 4 horizontally guided on the guide rail. The rangefinder telescope mounting bracket 3 is fixedly mounted on the guide block 4. Mounting plates 14 are provided at both ends of the guide rail on the device frame 1. A lead screw 12 is rotatably mounted on the mounting plate. A lead screw drive motor 16 is provided on the device frame, and the guide block 4 is threadedly connected to the lead screw 12. That is, the lead screw drive motor drives the lead screw to rotate, thereby causing the guide block and the rangefinder telescope mounting bracket on it to move horizontally. To protect the guide rail and the lead screw, a mounting housing 23 is provided on the device frame 1. The lead screw 12 and the mounting plate 14 are all located inside the mounting housing 23. The guide rail 24 is located on the front and rear sides of the upper end of the mounting housing 23, and the guide block 4 is provided with a guide part that guides and cooperates with the guide rail 24. A sealing cover 5 is provided at the upper end of the mounting housing 23. The left and right ends of the sealing cover 5 are fixedly connected to the mounting housing 23. The guide block 4 is provided with through holes 13 for the sealing cover 5 to pass through from the left and right. The through holes 13 and the sealing cover 5 can be guided and moved together.

[0025] The rangefinder mounting bracket 3 is equipped with a fixing structure for securing the rangefinder 7 to be calibrated. The rangefinder mounting bracket 3 includes a base plate 8 for placing the rangefinder 7 to be calibrated. A movable plate 9 is vertically mounted on the rangefinder mounting bracket 3. The fixing structure includes pressure posts mounted on the movable plate 9 to press down and hold the rangefinder 7 to be calibrated. The pressure posts are spring-loaded. In this embodiment, there are three pressure posts: a first pressure post 17, a second pressure post 20, and a third pressure post 21, arranged in a triangular pattern. In this embodiment, the first pressure post is fixed in position, while the positions of the second and third pressure posts are adjustable. Two limiting posts 15 are spaced horizontally on the base plate 8 to limit the movement of the placed rangefinder 7 on the left and right sides. The rangefinder mounting bracket 3 is equipped with a drive mechanism that moves the movable plate 9 vertically. In this embodiment, the drive mechanism is a quick-clamp 10, which is existing technology and will not be described in detail here. The lower movable end of the quick-clamp is fixedly connected to the movable plate. The quick clamp is operated by turning the handle to move the lower movable end up and down.

[0026] Each pressure column is mounted on the movable plate 9 via an adjustment structure. The adjustment structure includes a pressure column mounting block 18 for mounting the corresponding pressure column. The movable plate 9 has a first elongated hole 19 extending horizontally, and the pressure column mounting block has a second elongated hole 22 extending in the front-back direction. Connecting bolts (not shown in the figure) are inserted into the first elongated hole 19 and the second elongated hole 22 to fix the adjusted pressure column mounting block. This design allows for adjustment of the pressure column position, making it suitable for rangefinding telescopes of different sizes and greatly improving its versatility.

[0027] A host computer 6 is mounted on the device frame 1. The host computer has a serial port, which is connected to the ranging telescope 7 to be calibrated via a signal cable to realize information transmission between the host computer and the ranging telescope. In this embodiment, the host computer 6 uses a touch screen display, which can be used not only for information input but also for information display.

[0028] When a fixed-length fiber optic cable is damaged during use, it needs to be replaced. The replacement length cannot be exactly the same as the original fiber optic cable. Therefore, when recalibrating the rangefinder telescope, the internal parameters of the telescope need to be adjusted. Specifically: Place the rangefinder telescope to be calibrated on the mounting plate, ensuring that the corresponding parts (e.g., the eye-viewing part) are positioned between the limiting posts. Adjust the position of the pressure posts according to the size of the rangefinder telescope. Then, use quick-clamping clamps to adjust the up-and-down position of the movable plate, pressing down the pressure posts to fix the rangefinder telescope in place. Connect the rangefinder telescope to be calibrated and the serial port of the touchscreen display via a signal cable. Input the new fiber optic cable length and basic compensation values ​​into the host computer, and transmit this information to the rangefinder telescope for adjustment via the serial port and signal cable. Then, perform the calibration.

[0029] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to 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; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0031] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0032] In other embodiments of this utility model, the number of pressure columns can be adjusted according to actual needs; provided that the ranging telescope to be calibrated is not damaged, the pressure columns can also be fixed; the host computer can also be replaced by other existing host computers, such as a processor and an input module (keyboard) connected to the processor; the number of mounting holes can also be adjusted according to actual needs; provided that it does not affect the use, the mounting shell and sealing cover plate can be omitted on the device frame, and the lead screw and mounting plate can be directly set on the device frame, that is, a common exposed lead screw and nut mechanism.

Claims

1. A rangefinding telescope calibration device, comprising a device frame, wherein the device frame is provided with an optical fiber mounting bracket for mounting optical fibers of fixed length and a rangefinding telescope mounting bracket for mounting a rangefinding telescope to be calibrated, characterized in that: The device frame is equipped with a host computer, which has a serial port. The serial port is connected to the ranging telescope to be calibrated via a signal line to realize information transmission between the host computer and the ranging telescope to be calibrated.

2. The ranging telescope calibration device according to claim 1, characterized in that: The host computer is a touch screen display.

3. The ranging telescope calibration device according to claim 1 or 2, characterized in that: The fiber optic mounting bracket has two or more sets of mounting holes spaced horizontally, each set of mounting holes being used to fix the two ends of a corresponding fixed-length fiber optic cable; the ranging telescope mounting bracket is movably mounted on the device frame via a mounting mechanism, and the direction of movement of the ranging telescope mounting bracket is parallel to the direction of the spacing of the mounting holes.

4. The ranging telescope calibration device according to claim 3, characterized in that: The installation mechanism includes a horizontal guide rail mounted on the device frame, a guide block mounted on the guide rail for horizontal guidance and movement, a rangefinder telescope mounting bracket fixedly mounted on the guide block, mounting plates at both ends of the guide rail on the device frame, a lead screw rotatably mounted on the mounting plate, a lead screw drive motor mounted on the device frame, and the guide block threadedly connected to the lead screw.

5. The ranging telescope calibration device according to claim 1, characterized in that: The rangefinder mounting bracket is equipped with a fixing structure for securing the rangefinder to be calibrated.

6. The ranging telescope calibration device according to claim 5, characterized in that: The rangefinder mounting bracket includes a base plate for placing the rangefinder to be calibrated, and a movable plate is provided on the rangefinder mounting bracket for vertical movement. The fixing structure includes a pressure column provided on the movable plate for downward fixing and pressing down on the rangefinder to be calibrated.

7. The ranging telescope calibration device according to claim 6, characterized in that: The pressure column is a spring column.

8. The ranging telescope calibration device according to claim 6, characterized in that: The number of pressure columns is at least three, and they are arranged in a triangular pattern.

9. The ranging telescope calibration device according to claim 6, characterized in that: Two limiting posts are spaced apart along the horizontal direction on the base plate.

10. The ranging telescope calibration device according to claim 6, characterized in that: Each of the pressure columns is mounted on the movable plate via an adjustment structure. The adjustment structure includes a pressure column mounting block for mounting the corresponding pressure column. The movable plate is provided with a first elongated hole extending horizontally, and the pressure column mounting block is provided with a second elongated hole extending in the front-back direction. Connecting bolts are inserted into the first and second elongated holes to fix the adjusted pressure column mounting block.

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