Auxiliary tool for automatically identifying distance measurement of leveling staff

Abstract

The utility model discloses an auxiliary tool for automatically identifying the distance measurement of a leveling staff, which comprises a staff body, two marking points are arranged on one side of the staff body with scales, the distance between the two marking points is fixed, and the two marking points are respectively arranged at the top and the bottom of the staff body; the digital lens is fixed on an eyepiece of the level gauge and is connected with an image sensor, the image sensor is connected with a central processing unit, light enters and is focused on the image sensor through the digital lens, and the image sensor converts an optical signal into an electric signal. According to the leveling staff, the pixel spacing between the two marking points is identified through the image sensor and the central processing unit, the distance between the staff body and a test position is calculated and displayed on the first display screen in real time, the operation is simple, the efficiency is high, and the position of the leveling staff can be adjusted in time according to test requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of leveling instrument equipment, in particular to an auxiliary tool for automatically identifying the distance measurement of a leveling rod. Background Art

[0002] A level is a precision measuring instrument used to measure the height difference between two points on the ground. It mainly determines the height difference between two points by establishing a horizontal line of sight. It is a basic tool in the fields of civil engineering, surveying and mapping, construction, geological exploration, etc. It is also used together with a leveling ruler. The basic principle of a level is to use a horizontal line of sight to compare the heights of different points, thereby determining the relative height difference between two points.

[0003] When using a level to measure the height difference between two points, it is often necessary to first determine the distance between the measuring point and the level, that is, the distance between the level rod and the level. Currently, the distance between the level rod and the level is calculated by the difference between the upper thread and the lower thread of the level. However, when measuring, the level rod needs to be erected, and then the level needs to be aimed and the clarity adjusted before manually measuring and reading the distance between the two positions. The operation is relatively complicated, and the measurement efficiency is low. The position of the level rod cannot be adjusted in time according to the test requirements. Utility Model Content

[0004] The utility model aims to provide an auxiliary tool for automatically identifying the distance measurement of a leveling rod, so as to solve the technical problems in the prior art that the method of using a level to measure the distance between a leveling rod and the leveling rod is complicated in operation and low in efficiency.

[0005] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] An auxiliary tool for automatically identifying the distance measurement of a leveling rod, comprising:

[0007] A ruler body, wherein two marking points are arranged on one side of the ruler body having the scale, and the distance between the two marking points is fixed, and the two marking points are arranged at the top and bottom of the ruler body respectively;

[0008] A digital lens is fixed on the eyepiece of the level and connected to an image sensor, the image sensor is connected to a central processing unit, light enters through the digital lens and is focused on the image sensor, and the image sensor converts the light signal into an electrical signal;

[0009] The first display screen is connected to the central processing unit. The central processing unit receives the image signal collected by the image sensor, identifies the pixel spacing between the two marking points on the photo, and obtains the distance between the ruler body and the test position through an algorithm, and displays it on the first display screen.

[0010] As a preferred solution of the utility model, a U-shaped buckle is fixedly connected to the bottom of the digital lens, and the U-shaped buckle is snapped onto the outer surface of the level eyepiece, so that the digital lens is fixed to the top of the level eyepiece.

[0011] As a preferred solution of the utility model, an elastic clamp is fixedly connected to the bottom of the first display screen, the vertical cross-section of the elastic clamp is set to an arc shape, and the elastic clamp is buckled on the outer surface of the level telescope, so that the first display screen is set on the top of the level telescope, and the elastic clamp is fixedly connected to the digital lens through a connecting plate.

[0012] As a preferred solution of the utility model, a second display screen is provided on one side of the ruler body, the second display screen and the marking points are respectively arranged on both sides of the ruler body, the second display screen is connected to the central processing unit via a Bluetooth module, and the central processing unit displays the distance between the ruler body and the test position on the second display screen via the Bluetooth module.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model identifies the pixel spacing between two marking points through an image sensor and a central processor, calculates the distance between the scale body and the test position, and displays it on the first display screen in real time. The operation is simple and efficient, and the position of the leveling scale can be adjusted in time according to the test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 The overall structural diagram provided by the utility model;

[0017] Figure 2 It is the right view of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the ruler body and the second display screen in the utility model;

[0019] Figure 4 This is a schematic diagram of the connection of electrical components in the utility model;

[0020] Figure 5 It is a schematic diagram of the principle of data processing by the central processing unit in the utility model.

[0021] The numbers in the figure represent the following:

[0022] 1. Ruler body; 2. Marking points; 3. Digital lens; 4. Image sensor; 5. Central processing unit; 6. First display screen; 7. U-shaped buckle; 8. Elastic splint; 9. Connecting plate; 10. Second display screen; 11. Bluetooth module. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 and Figure 2 As shown, the present invention provides an auxiliary tool for automatically identifying the leveling scale distance measurement, which mainly obtains the leveling scale distance through the image sensor 4 and the central processor 5.

[0025] Auxiliary tools for automatic recognition of level rod distance measurement include:

[0026] A ruler body 1, wherein two marking points 2 are provided on one side of the ruler body 1 having scales, and the distance between the two marking points 2 is fixed, and the two marking points 2 are respectively provided at the top and the bottom of the ruler body 1;

[0027] A digital lens 3 is fixed on the eyepiece of the level and connected to an image sensor 4. The image sensor 4 is connected to a central processing unit 5. Light enters through the digital lens 3 and is focused on the image sensor 4. The image sensor 4 converts the light signal into an electrical signal.

[0028] The first display screen 6 is connected to the central processor 5. The central processor 5 receives the image signal collected by the image sensor 4, identifies the pixel spacing between the two marking points 2 on the photo, and obtains the distance between the ruler body 1 and the test position through an algorithm, and displays it on the first display screen 6.

[0029] The model of digital lens 3 is XF 16-55mm f / 2.8R LM WR;

[0030] Image sensor 4 is a CMOS image sensor, model OV5658;

[0031] The model of CPU 5 is STM32F050;

[0032] The model of the first display screen 6 is 70297;

[0033] The model of the second display screen 10 is 70297;

[0034] The model of the Bluetooth module 11 is HC-05D dual-mode Bluetooth module sticker.

[0035] When using a level to measure the height difference between two points, it is often necessary to first determine the distance between the measuring point and the level, that is, the distance between the level rod and the level. Currently, the distance between the level rod and the level is calculated by the difference between the upper thread and the lower thread of the level. However, when measuring, the level rod needs to be erected, and then the level needs to be aimed and the clarity adjusted before manually measuring and reading the distance between the two positions. The operation is relatively complicated and the measurement efficiency is low. The position of the level rod cannot be adjusted in time according to the test requirements. Therefore, it is necessary to develop an auxiliary tool for automatically identifying the level rod distance measurement.

[0036] This embodiment uses the image sensor 4 and the central processing unit 5 to identify the pixel spacing between the two marking points 2, calculates the distance between the scale body 1 and the test position, and displays it in real time on the first display screen 6. It is simple to operate and highly efficient, and the position of the leveling scale can be adjusted in time according to the test requirements.

[0037] In actual use, 1. One staff member operates the level, and another staff member holds the ruler body 1 and continuously moves the ruler body 1 until the distance between the ruler body 1 and the level meets the requirements;

[0038] 2. As the ruler body 1 moves continuously, the light reflected by the two marking points 2 on the ruler body 1 enters through the digital lens 3 and is focused on the image sensor 4. The image sensor 4 converts the light signal into an electrical signal, and the light intensity on each pixel is converted into a corresponding voltage or charge. The central processing unit 5 receives the data, identifies the pixel spacing between the two marking points 2 on the photo, and then executes the algorithm to obtain the distance between the ruler body 1 and the test position.

[0039] The distance between the ruler body 1 and the test position is displayed in real time on the first display screen 6, and the position of the level ruler can be adjusted in time according to the test requirements.

[0040] The principle of data processing by the CPU 5 is as follows:

[0041] For example, if the digital lens 3 is 1600*1200 pixels and the image sensor 4 is 3.2*2.4mm in size, then the size of each pixel is 3.2mm / 1600=0.002mm. The pixel spacing of the straight-line distance between the two red dots calculated by photo recognition is (Δx^2+Δy^2)^0.5, and the actual distance on the sensor is a=(Δx^2+Δy^2)^0.5*0.002mm.

[0042] like Figure 5 As shown, the length of a is the length of the two marking points 2 on the ruler body 1 on the sensor, GSD is the actual distance between the two marking points 2 (fixed parameter, set in advance to 1.8m), f is the focal length of the camera (fixed parameter), and h is the distance between the test position and the ruler body 1 (parameter to be determined). According to the principle of similar triangles, f / h=a / GSD, f (known focal length), GSD (actual distance 1.8m), and a (obtained by identification calculation), h can be obtained.

[0043] The above calculation process is obtained by the central processing unit 5 executing an algorithm, which is a prior art.

[0044] As a preferred embodiment of this embodiment, a U-shaped buckle 7 is fixedly connected to the bottom of the digital lens 3, and the U-shaped buckle 7 is snapped on the outer surface of the eyepiece of the level instrument, so that the digital lens 3 is fixed to the top of the eyepiece of the level instrument. The digital lens 3 is fixed to the level instrument through the U-shaped buckle 7, which is convenient for installing the device without changing the original structure of the level instrument.

[0045] The bottom of the first display screen 6 is fixedly connected with an elastic clamping plate 8, the vertical cross-section of the elastic clamping plate 8 is set to be arc-shaped, and the elastic clamping plate 8 is buckled on the outer surface of the level telescope, so that the first display screen 6 is set on the top of the level telescope, and the elastic clamping plate 8 is fixedly connected to the digital lens 3 through the connecting plate 9. The device also includes a battery compartment on the connecting plate 9.

[0046] The first display screen 6 is mounted on the level through the elastic clamp 8 , without changing the original structure of the level, and it is convenient to view the data on the first display screen 6 .

[0047] A second display screen 10 is provided on one side of the ruler body 1, the second display screen 10 and the marking point 2 are respectively provided on both sides of the ruler body 1, the second display screen 10 is connected to the central processor 5 via the Bluetooth module 11, and the central processor 5 displays the distance between the ruler body 1 and the test position on the second display screen 10 via the Bluetooth module 11. Adding the second display screen 10 to the ruler body 1 enables the staff holding the ruler body 1 to also see the real-time distance between the ruler body 1 and the test position, which is convenient for adjusting their own position and improving work efficiency.

[0048] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. An auxiliary tool for automatically identifying the distance measurement of a leveling rod, characterized in that: include: A ruler body (1), wherein two marking points (2) are arranged on a side of the ruler body (1) having scales, and the distance between the two marking points (2) is fixed and the two marking points (2) are arranged at the top and bottom of the ruler body (1) respectively; A digital lens (3) is fixed on the eyepiece of the level and is connected to an image sensor (4). The image sensor (4) is connected to a central processing unit (5). Light enters through the digital lens (3) and is focused on the image sensor (4). The image sensor (4) converts the light signal into an electrical signal. The first display screen (6) is connected to the central processing unit (5), and the central processing unit (5) receives the image signal collected by the image sensor (4), identifies the pixel spacing between the two marking points (2) on the photo, and obtains the distance between the scale body (1) and the test position through an algorithm, and displays it on the first display screen (6).

2. The auxiliary tool for automatically identifying the distance measurement of a leveling rod according to claim 1, characterized in that: The bottom of the digital lens (3) is fixedly connected with a U-shaped buckle (7), and the U-shaped buckle (7) is clamped on the outer surface of the leveling instrument eyepiece, so that the digital lens (3) is fixed on the top of the leveling instrument eyepiece.

3. The auxiliary tool for automatically identifying the distance measurement of a leveling rod according to claim 2, characterized in that: An elastic clamp (8) is fixedly connected to the bottom of the first display screen (6); the vertical cross-section of the elastic clamp (8) is arranged to be arc-shaped; the elastic clamp (8) is buckled on the outer surface of the level telescope, so that the first display screen (6) is arranged on the top of the level telescope, and the elastic clamp (8) is fixedly connected to the digital lens (3) via a connecting plate (9).

4. The auxiliary tool for automatically identifying the distance measurement of the leveling rod according to claim 3, characterized in that: A second display screen (10) is provided on one side of the ruler body (1); the second display screen (10) and the marking point (2) are respectively arranged on both sides of the ruler body (1); the second display screen (10) is connected to a central processing unit (5) via a Bluetooth module (11); and the central processing unit (5) displays the distance between the ruler body (1) and the test position on the second display screen (10) via the Bluetooth module (11).

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