A two-dimensional laser rangefinder

Abstract

The utility model relates to surveying equipment technical field especially relates to a two -dimensional laser range finder, including surveying rod and connecting seat, the surveying rod with the bottom perpendicular of connecting seat, the bottom of connecting seat is provided with first inclination sensor, connecting seat rotationally connected has surveying host computer, the rotation axis of surveying host computer with the axis of surveying rod is perpendicular, surveying host computer inside is provided with laser ranging unit and second inclination sensor. Through the connecting mode between surveying rod, surveying host computer and connecting seat, make surveying host computer support up and down, left and right two degrees of freedom adjustment's movable structure, only need to put surveying rod tip of the toe on the bottom surface positioning point when measuring, surveying host computer's laser spot aims at the measured point, through space right angle coordinate system conversion, finally accurately measures the position or height H and horizontal distance L of line ground positioning point relative to steel rail measured point. The utility model designs rationally, convenient to use, has improved the surveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a two-dimensional laser rangefinder. Background Technology

[0002] After the large-scale cleaning and screening operation of the rails is completed, the rails need to be measured to ensure that their position after cleaning is consistent with their position before cleaning. Laser rangefinders are auxiliary measuring tools for the large-scale cleaning and screening operation. Currently, the measurement after rail cleaning usually involves directly measuring the distance between the positioning point and the rail using the laser line distance of the laser rangefinder. This method has a large measurement error, and to ensure the accuracy of the measurement before and after cleaning, multiple adjustments to the laser rangefinder are required during the existing laser measurement process. This adjustment process is very complex, resulting in a lengthy measurement process. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a two-dimensional laser rangefinder that is reasonably designed, easy to use, and highly efficient, thereby improving work efficiency and ensuring work quality.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a two-dimensional laser rangefinder, including a measuring rod and a connecting seat, the bottom of the connecting seat is rotatably connected to the top of the measuring rod, the measuring rod is perpendicular to the bottom of the connecting seat, a first tilt sensor is provided at the bottom of the connecting seat, a measuring host is rotatably connected to the connecting seat, the rotation axis of the measuring host is perpendicular to the axis of the measuring rod, and a laser ranging unit and a second tilt sensor are provided inside the measuring host.

[0005] Furthermore, the measuring rod is provided with at least one support rod.

[0006] Furthermore, the first tilt sensor is a dual-axis tilt sensor.

[0007] Furthermore, a first rotating slide is provided at the top of the measuring rod, and the connecting seat is rotatably connected to the top of the measuring rod through the first rotating slide.

[0008] Furthermore, the measuring host is rotatably connected to the connecting seat via a second rotary slide.

[0009] Furthermore, the rotation axis of the measuring host is perpendicular to and intersects the axis of the measuring rod.

[0010] Furthermore, the measuring host is also equipped with a power supply, a circuit board, and a display screen. The laser ranging unit, the first tilt sensor, the second tilt sensor, the power supply, and the display screen are electrically connected to the circuit board.

[0011] Furthermore, it also includes a sight, which is connected to the measuring host and / or the connector.

[0012] The beneficial effects of this utility model are:

[0013] 1. The two-dimensional laser rangefinder, through the connection between the measuring rod, the measuring host, and the connecting seat, enables the measuring host to support a movable structure with two degrees of freedom for adjustment, namely up and down and left and right. During measurement, simply place the tip of the measuring rod on the bottom positioning point. The first tilt sensor on the measuring rod determines the two-dimensional plane, and the second tilt sensor performs dynamic compensation and calculation on the geometric state of the measuring host. Then, combined with the straight distance measured by the measuring host and the distance from the tip of the measuring rod to the rotation axis of the measuring host, through spatial rectangular coordinate system transformation, the position or height H and horizontal distance L of the ground positioning point of the line relative to the measured point of the rail are finally accurately measured.

[0014] 2. Due to the connection method between the measuring rod, the measuring host and the connecting seat, this utility model eliminates the need to adjust the level of the measuring platform and the bubble level before measurement, which helps to save measurement time and improve measurement efficiency.

[0015] 3. This utility model has a reasonable design, simple structure, and convenient operation. One person can perform the measurement, and the measurement accuracy is high. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 yes Figure 1 The main view.

[0018] Figure 3 yes Figure 2 Enlarged view of a local structure.

[0019] Figure 4 yes Figure 1 Side view.

[0020] Figure 5 This is a schematic diagram of the measurement process.

[0021] Explanation of reference numerals in the attached figures: 1—Measuring rod, 2—Connecting seat, 3—First tilt sensor, 4—Measuring host, 5—Support rod, 6—First rotary slide, 7—Second rotary slide, 8—Sighting scope. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0023] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a two-dimensional laser rangefinder of this embodiment includes a measuring rod 1 and a connecting seat 2. The bottom of the connecting seat 2 is rotatably connected to the top of the measuring rod 1. The measuring rod 1 is perpendicular to the bottom of the connecting seat 2. A first tilt sensor 3 is provided at the bottom of the connecting seat 2. Preferably, the first tilt sensor 3 is a dual-axis tilt sensor. The rotation axis of the connecting seat 2 is parallel or coaxial with the axis of the measuring rod 1. A measuring host 4 is rotatably connected to the connecting seat 2. The rotation axis of the measuring host 4 is perpendicular to the axis of the measuring rod 1. A laser ranging unit and a second tilt sensor are provided inside the measuring host 4. The laser ranging unit is used to measure the distance from the intersection of the rotation axis of the measuring host 4 and the axis of the measuring rod 1 to the measured point. The second tilt sensor is used to measure the angle of the laser beam, such as the angle between the laser beam and the horizontal plane. The second tilt sensor is a single-axis tilt sensor or a dual-axis tilt sensor.

[0026] The measuring rod 1 is provided with at least one support rod 5 for supporting and fixing the measuring rod 1, ensuring the stability of the measurement process and the accuracy of the measurement results; the connecting part between the support rod 5 and the measuring rod 1 is chamfered to limit the angle of the support rod 5 after it is fully opened. When using it, you only need to open the support rod 5 to the maximum angle without further adjustment.

[0027] The first tilt sensor 3 is a dual-axis tilt sensor. During measurement, the bottom of the measuring rod 1 is placed on the positioning point on the ground. The positioning point or the bottom of the measuring rod 1 is taken as the origin. Since the distance between the bottom of the measuring rod 1 and the axis of rotation of the measuring host 4 is a fixed value, the spatial angle of the measuring rod 1 can be obtained through the dual-axis tilt sensor, and then the three-dimensional coordinates of the intersection of the rotation axis of the measuring instrument and the axis of the measuring rod 1 can be measured.

[0028] The measuring rod 1 is provided with a first rotating slide 6 at its top. The connecting seat 2 is rotatably connected to the top of the measuring rod 1 through the first rotating slide 6, which facilitates the connecting seat 2 to rotate along the axis of the measuring rod 1, thereby adjusting the position of the light spot of the measuring host 4 left and right.

[0029] The measuring host 4 is rotatably connected to the connecting seat 2 via the second rotating slide 7, which facilitates the rotation of the rangefinder, allowing the measuring instrument to swing up and down to adjust the position of the light spot of the measuring host 4.

[0030] The rotation axis of the measuring host 4 is perpendicular to and intersects the axis of the measuring rod 1, which facilitates the measurement of the position of the measured point in the two-dimensional plane determined by the two-axis tilt sensors on the measuring rod 1.

[0031] The measuring host 4 is also equipped with a power supply, a circuit board, and a display screen. The laser ranging unit, the first tilt sensor 3, the second tilt sensor, the power supply, and the display screen are electrically connected to the circuit board. The power supply (such as a battery) supplies power to various components. The circuit board calculates the horizontal distance L and the relative height H between the measured point on the rail and the ground marker point based on the data transmitted by the laser ranging unit, the first tilt sensor 3, and the second tilt sensor, and displays the results on the display screen.

[0032] It also includes a sight 8, which is connected to the measuring host 4 and / or the connecting base 2. Through the sight 8, especially in strong light measurement, the laser spot can be accurately and quickly located and aligned with the point to be measured.

[0033] The laser beam of the measuring host 4 is perpendicular to the rotation axis of the measuring host 4.

[0034] The measurement principle of this invention is as follows: Before the large-scale rail cleaning operation, a certain location is set on the ground, and a measurement point is set on the rail. The position or distance of the measurement point relative to the location point before cleaning is measured. After the large-scale cleaning is completed, the position or distance of the measurement point relative to the location point after cleaning is measured. By comparing the data before and after cleaning, it can be determined whether the position of the rail has changed after cleaning and what specific values ​​need to be adjusted. During measurement, align the bottom of measuring rod 1 with the positioning point on the ground and start the instrument. Due to the connection method between the measuring host 4, connecting seat 2, and measuring rod 1, the measuring host 4 can achieve two degrees of freedom: vertical and horizontal. Then, the laser spot is positioned on the measured point on the rail. The two-axis tilt sensors on the measuring rod 1 determine the two-dimensional plane. Combining the straight-line distance measured by the measuring host 4, the angle measured by the second tilt sensor, and the fixed distance from the bottom of the measuring rod 1 to the rotating shaft of the measuring host 4, the relative position of the positioning point and the measured point, or the height H and horizontal distance L of the positioning point relative to the measured point, can be accurately measured. The position of the measured point relative to the positioning point, or the lateral and vertical distances of the measured point relative to the positioning point, can be read on the display screen of the measuring host 4. By comparing the data after cleaning the same measuring point with that before cleaning, the specific values ​​that need to be adjusted for that measuring point can be determined.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A two-dimensional laser rangefinder, characterized in that: It includes a measuring rod (1) and a connecting seat (2). The bottom of the connecting seat (2) is rotatably connected to the top of the measuring rod (1). The measuring rod (1) is perpendicular to the bottom of the connecting seat (2). A first tilt sensor (3) is provided at the bottom of the connecting seat (2). A measuring host (4) is rotatably connected to the connecting seat (2). The rotation axis of the measuring host (4) is perpendicular to the axis of the measuring rod (1). A laser ranging unit and a second tilt sensor are provided inside the measuring host (4).

2. The two-dimensional laser rangefinder according to claim 1, characterized in that: The measuring rod (1) is provided with at least one support rod (5).

3. A two-dimensional laser rangefinder according to claim 1, characterized in that: The first tilt sensor (3) is a dual-axis tilt sensor.

4. A two-dimensional laser rangefinder according to claim 1, characterized in that: The measuring rod (1) is provided with a first rotating slide (6) at the top, and the connecting seat (2) is rotatably connected to the top of the measuring rod (1) through the first rotating slide (6).

5. A two-dimensional laser rangefinder according to claim 1, characterized in that: The measuring host (4) is rotatably connected to the connecting seat (2) via the second rotating slide (7).

6. A two-dimensional laser rangefinder according to claim 1, characterized in that: The rotation axis of the measuring host (4) is perpendicular to and intersects the axis of the measuring rod (1).

7. A two-dimensional laser rangefinder according to claim 1, characterized in that: The measuring host (4) is also equipped with a power supply, a circuit board, and a display screen. The laser ranging unit, the first tilt sensor (3), the second tilt sensor, the power supply, and the display screen are electrically connected to the circuit board.

8. A two-dimensional laser rangefinder according to claim 1, characterized in that: It also includes a sight (8), which is connected to the measuring host (4) and / or the connector (2).

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