Irregular curved surface surveying and mapping device based on laser ranging

Abstract

The utility model discloses an irregular curved surface surveying and mapping device based on laser ranging. The irregular curved surface surveying and mapping device comprises a laser range finder, a central rotating shaft, a rotating pointer and an angle dial, wherein the laser range finder, the central rotating shaft and the rotating pointer are fixedly arranged on the angle dial; the two laser range finders are horizontally and vertically arranged on the angle dial respectively and are used for measuring the distance between a measuring dot and a measuring point on a measured curved surface in the horizontal direction and measuring the vertical distance between the measured curved surface and the ground; one side of the rotating pointer is fixed with the central rotating shaft, the other side of the rotating pointer is arranged at the edge of the angle dial, the rotating pointer is rotated to form a certain angle with the zero line of the angle dial and then is locked, measurement is started, the angle and distance are recorded, the angle is changed to obtain a plurality of measuring points, a measured curved surface is further fitted, and the measured curved surface is measured by adjusting the vertical elevation of a measuring dot. And obtaining a plurality of curved surfaces with different elevations, and fitting the plurality of curved surfaces into a three-dimensional irregular curved surface. The surveying and mapping device is simple and reliable in operation.

Description

Technical Field

[0001] The utility model relates to a non-regular curved surface surveying and mapping device based on laser ranging, belonging to the technical field of non-regular curved surface surveying and mapping. Background Art

[0002] In daily work, it is necessary to survey and map some physical objects. Traditional planes and ground can be measured by simple instruments. However, when some objects are more complex and have some irregular shaped curved surfaces, traditional surveying tools cannot play a role, resulting in inaccurate surveying and mapping. Content of the Utility Model

[0003] The utility model provides a non-regular curved surface surveying and mapping device based on laser ranging, which solves the problems disclosed in the background art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] The utility model provides a non-regular curved surface surveying and mapping device based on laser ranging, comprising: a laser rangefinder, a central rotating shaft, a rotating pointer, an angle scale and a supporting structure;

[0006] The laser rangefinder, the central rotating shaft and the rotating pointer are all fixedly arranged on the angle scale;

[0007] There are two laser rangefinders, namely laser rangefinder one and laser rangefinder two, which are horizontally and vertically arranged on the angle scale respectively; Laser rangefinder one is used to measure the horizontal distance between the measuring dot and the measuring point on the measured curved surface, and laser rangefinder two is used to measure the vertical distance between the measured curved surface and the ground, and laser rangefinder two is located on the back of the angle scale; The intersection point of the central rotating shaft and the rotating pointer is defined as the measuring dot;

[0008] One side of the rotating pointer is fixed to the central rotating shaft and can rotate around the central rotating shaft, and the other side of the rotating pointer is at the edge of the angle scale;

[0009] Laser rangefinder one is fixed together with the rotating pointer and rotates together with the rotating pointer;

[0010] The angle scale is used to display the rotation angle of the rotating pointer, and the rotation angle and the distance measured by laser rangefinder one constitute the coordinates of the measuring point on the measured curved surface;

[0011] The angle scale is fixed on the supporting structure, and the supporting structure is used to support the angle scale and adjust the height of the measuring dot to be in the same plane as the measured curved surface.

[0012] Preferably, the angle dial is a circular horizontal scale dial;

[0013] The scale interval of the circular horizontal scale dial is 1°.

[0014] Preferably, the surveying and mapping device further includes a level measuring device;

[0015] The level measuring device is placed on the circular horizontal scale dial and is used to level the circular horizontal scale dial during measurement.

[0016] Preferably, the angle range for the rotary pointer to rotate around the central rotating shaft is 0° to 360°.

[0017] Preferably, the support structure includes a vertical telescopic rod and a triangular bracket;

[0018] The angle dial is fixed at the top of the vertical telescopic rod, and the vertical telescopic rod is fixed on the triangular bracket;

[0019] The height of the vertical telescopic rod is adjustable.

[0020] Preferably, the surveying and mapping devices support being used jointly. When multiple devices are used jointly, they are arranged at different positions around the measured curved surface, and the measuring origin points of each surveying and mapping device are on the same horizontal plane as the measured curved surface.

[0021] Preferably, the measurement accuracy of the laser rangefinder is higher than 0.01 m.

[0022] The beneficial effects of the present utility model are as follows:

[0023] The present utility model provides a non-regular curved surface surveying and mapping device for laser ranging. The measurement of the curved surface is completed by the laser rangefinder and by changing the angle. The measured curved surface is fitted by obtaining the coordinate values of the measurement points, and by adjusting the vertical elevation of the measuring origin points, curved surfaces at multiple different elevations are obtained, and a three-dimensional non-regular curved surface is fitted by multiple curved surfaces. The operation of this surveying and mapping device is simple and reliable.

[0024] This surveying and mapping device can operate individually or jointly. If the measurement viewing angle β between the surveying and mapping device and the measured object cannot perform full-angle measurement on the measured object, then multiple surveying and mapping devices need to be arranged. The multiple surveying and mapping devices are on the same horizontal plane as the measurement curved surface. Each surveying and mapping device measures separately to obtain the coordinate values of the measurement points, and the measured curved surface is fitted by the coordinate values of all the measurement points measured by all the surveying and mapping devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the non-regular curved surface surveying and mapping device for laser ranging provided by the present utility model;

[0026] Figure 2 The Figure 1 top view of the non-regular surface mapping device shown;

[0027] Figure 3 The Figure 1 schematic diagram of the circular horizontal scale in the non-regular surface mapping device shown;

[0028] Figure 4 is an example of the rotation angle of the rotation pointer of the mapping device; Figure 4 (a) is a schematic diagram of the rotation pointer rotating clockwise by an angle a; as Figure 4 shown in (b) is a schematic diagram of the rotation pointer rotating counterclockwise by an angle a;

[0029] Figure 5 is a schematic diagram of the arrangement of 4 mapping dots in the embodiment of the present utility model; Figure 5 (a) shows an example where the measurement angle β cannot perform full-angle measurement on the measurement plane, Figure 5 and (b) shows an example of the arrangement of multiple mapping dots;

[0030] Figure 6 is a schematic diagram of measurement at the mapping dot A1 in the embodiment of the present utility model;

[0031] Figure 7 is a schematic diagram of all measurement points obtained by arranging 4 mapping dots in the embodiment of the present utility model;

[0032] Figure 8 is the measured surface fitted in the embodiment of the present utility model. Detailed implementation manner

[0033] Next, the specific implementation manner of the present utility model will be further described in detail in combination with the drawings and embodiments. The embodiments described below with reference to the drawings are illustrative and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "end", "bottom", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0035] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "installation" shall be understood in a broad sense. For example, it may be a fixed connection, a direct connection, or a connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Secondly, the "one embodiment" or "embodiment" referred to in the present utility model means a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an independent or selectively mutually exclusive embodiment with other embodiments.

[0037] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the drawings. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0038] As Figure 1 and Figure 2 shown, the present utility model provides a non-regular curved surface surveying and mapping device based on laser ranging, including two laser rangefinders, a central rotating shaft 2, a rotating pointer 4, a circular horizontal scale 3, two spirit levels 6, a vertical telescopic rod 7 and a triangular bracket 8. Among them, the two laser rangefinders are respectively the first laser rangefinder 1 and the second laser rangefinder 5.

[0039] Specifically, the two laser rangefinders, the central rotating shaft 2, the rotating pointer 4 and the two spirit levels 6 are all fixedly arranged on the circular horizontal scale 3.

[0040] The first laser rangefinder 1 and the second laser rangefinder 5 are respectively fixedly arranged horizontally and vertically on the circular horizontal scale 3, and their measurement accuracy should be higher than 0.01 m. The first laser rangefinder 1 is used to measure the horizontal distance between the measurement point and the dot, and the second laser rangefinder 5 is used to measure the vertical distance between the measured curved surface 9 and the ground, and the second laser rangefinder 5 is fixed on the back of the circular horizontal scale 3. The intersection point of the central rotating shaft and the rotating pointer is defined as the measurement dot.

[0041] In the present utility model, the circular horizontal scale 3 is fixed on the top of the vertical telescopic rod 7, and the vertical telescopic rod 7 is fixed on the triangular bracket 8.

[0042] The height of the vertical telescopic rod 7 is adjustable. The vertical telescopic rod 7 is used to support the circular horizontal scale 3 and adjust according to the height of the measured curved surface 9 so that the measurement dot and the measured curved surface 9 are on the same horizontal plane.

[0043] In the present utility model, the circular horizontal scale 3 has a relatively high horizontal plane, on which a horizontal measuring device is arranged to indicate whether the circular horizontal scale 3 is arranged horizontally. Specifically, two spirit levels 6 can be adopted, and two spirit levels are convenient for better leveling.

[0044] See Figure 3 , the circular horizontal scale 3 is provided with scales representing angles, with a scale interval of 1°. When the surveying and mapping device is measuring, the circular horizontal scale 3 should be adjusted to be horizontal, and the two spirit levels 6 indicate whether the circular horizontal scale 3 is arranged horizontally.

[0045] See Figure 4 (a) and Figure 4 (b), in the present utility model, the first laser rangefinder 1 is fixed together with the rotating pointer 4. One side of the rotating pointer 4 is fixed to the central rotating shaft 2 and can rotate 360 degrees around the central rotating shaft 2. The first laser rangefinder 1 rotates together with the rotating pointer 4, and the other side of the rotating pointer 4 is at the edge of the circular horizontal scale 3. The intersection point of the central rotating shaft 2 and the rotating pointer 4 is the measuring dot.

[0046] During measurement, after rotating the rotating pointer 4 to form a certain angle with the zero-degree line of the circular horizontal scale 3 and locking it, the horizontal distance between the measuring dot and the measuring point on the measured curved surface is measured by the first laser rangefinder 1 to obtain the coordinates (a, d) of a measuring point, where a is the angle of rotation of the rotating pointer and d is the distance between the measuring dot and the measuring point. As Figure 4 (a) shows that the rotating pointer 4 can rotate clockwise by angle a, and as Figure 4 (b) shows that the rotating pointer 4 can also rotate counterclockwise by angle a. The vertical distance between the measured curved surface and the ground is measured by the second laser rangefinder 5.

[0047] By changing the angle formed by the rotating pointer 4 and the zero-degree line of the circular horizontal scale 3 and conducting multiple measurements, the coordinates of multiple measuring points can be obtained. Finally, the coordinate values of all the obtained measuring points are used to fit the measured curved surface at this height.

[0048] The vertical elevation of the circular horizontal scale is adjusted by the vertical telescopic rod 7, and the curved surfaces at multiple heights are obtained by the same method. The entire three-dimensional curved surface is fitted by multiple curved surfaces.

[0049] The surveying and mapping process of the surveying and mapping device of the present utility model includes:

[0050] (1) For an irregular three-dimensional curved surface to be measured, determine a measuring plane, adjust the height of the vertical telescopic rod 7 so that the measuring dot and the measuring plane are on the same horizontal plane; measure the vertical distance h between the measuring plane and the ground by the second laser rangefinder.

[0051] (2) As Figure 5In (a), when the measurement viewing angle β between the surveying device and the measurement plane cannot perform full-angle measurement on the measurement plane, 3 to 4 measurement dots need to be arranged, that is, multiple such surveying devices are used in combination. The multiple surveying devices are arranged at different positions around the measurement plane, and the height of the vertical telescopic rod is adjusted so that the measurement dots of each surveying device are on the same horizontal plane as the measurement plane. As Figure 5 In an embodiment shown in (b), 4 surveying dots (A1, B1, C1, D1) are arranged.

[0052] (3) At the surveying dot (A1), the angle is changed by rotating the pointer. After locking, the angle a and distance d of a measurement point are measured. As Figure 6 In a horizontal plane, multiple measurement points' coordinates: (a1, d1), (a2, d2), (a3, d3) are obtained by changing the angle multiple times.

[0053] (4) Measurements are respectively carried out at 4 surveying dots (A1, B1, C1, D1). At each surveying dot, the number of measurement points is increased by changing the angle. As Figure 7 In it, 5 measurement points are measured at each of the 4 surveying dots, A11~A15, B11~B14, C11~C13, D11~D14. The specific number of measurement points is determined according to the shape complexity of the curved surface.

[0054] (5) The measured curved surface is fitted by the coordinate values of all obtained measurement points. As Figure 8 .

[0055] (6) Select measurement planes at different elevations, and repeat the methods of steps (2) to (5) to draw multiple curves at different elevations. Finally, an irregular three-dimensional surface is fitted according to the curves at multiple different heights.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An irregular surface mapping device based on laser ranging, characterized in that, Comprising: A laser rangefinder, a central rotating shaft, a rotating pointer, an angle scale and a support structure; The laser rangefinder, the central rotating shaft and the rotating pointer are all fixedly arranged on the angle scale; There are two laser rangefinders, namely laser rangefinder one and laser rangefinder two, which are horizontally and vertically arranged on the angle scale respectively; Laser rangefinder one is used to measure the horizontal distance between the measuring dot and the measuring point on the measured curved surface, and laser rangefinder two is used to measure the vertical distance between the measured curved surface and the ground, and laser rangefinder two is located on the back of the angle scale; Wherein the intersection of the central rotating shaft and the rotating pointer is defined as the measuring dot; One side of the rotating pointer is fixed to the central rotating shaft and can rotate around the central rotating shaft, and the other side of the rotating pointer is at the edge of the angle scale; Laser rangefinder one is fixed together with the rotating pointer and rotates together with the rotating pointer; The angle scale is used to display the rotation angle of the rotating pointer, and the rotation angle and the distance measured by laser rangefinder one constitute the coordinates of the measuring point on the measured curved surface; The angle scale is fixed on the support structure, and the support structure is used to support the angle scale and adjust the height of the measuring dot to be in the same plane as the measured curved surface.

2. The non-regular surface mapping device based on laser ranging according to claim 1, characterized in that, The angle scale is a circular horizontal scale; The scale interval of the circular horizontal scale is 1°; 3. The non-regular curved surface mapping device based on laser ranging according to claim 2, wherein The surveying and mapping device further includes a horizontal measuring device; The horizontal measuring device is placed on the circular horizontal scale and is used to level the circular horizontal scale during measurement.

4. A non-regular surface mapping device based on laser ranging according to claim 3, characterized in that, The rotation angle range of the rotating pointer around the central rotating shaft is 0° to 360°; 5. The non-regular surface mapping device based on laser ranging according to claim 3, characterized in that, The support structure includes a vertical telescopic rod and a triangular bracket; The angle scale is fixed on the top of the vertical telescopic rod, and the vertical telescopic rod is fixed on the triangular bracket; The height of the vertical telescopic rod is adjustable; 6. The non-regular surface mapping device based on laser ranging according to claim 5, characterized in that, The surveying and mapping devices support multiple combined uses. When multiple devices are used in combination, multiple surveying and mapping devices are arranged at different positions around the measured curved surface, and the measuring dots of each surveying and mapping device are all in the same horizontal plane as the measured curved surface.

7. A non-regular surface mapping device based on laser ranging according to any one of claims 1 to 6, characterized in that, The measurement accuracy of the laser rangefinder is higher than 0.01m.

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