Auxiliary device for measurement of laser sensor

Abstract

The utility model discloses an auxiliary device for laser sensor measurement, which comprises a laser sensor, the laser sensor is transversely and vertically arranged in a box body with an opening on one side, an octagonal prism is arranged in front of a laser diode and a filter lens of the laser sensor, and the octagonal prism comprises a reflecting mirror surface and a perspective surface. The laser distance measuring sensor has the advantages of being simple in structure and solving the problem of range starting point distance of the laser distance measuring sensor in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of laser sensors, in particular to an auxiliary device used for laser sensor measurement. Background Art

[0002] Laser ranging can be roughly divided into two types. The first principle is half of the product of the speed of light and the round-trip time, which is the distance between the rangefinder and the object being measured, taking the laser rangefinder as an example; the second is a measurement method based on the principle of laser displacement sensor.

[0003] There are three main laser measurement methods: pulse method (laser echo method), phase method, and triangulation reflection method. The accuracy of the pulse method is generally around + / -1 meter. In addition, the blind spot of this type of rangefinder is generally around 15 meters. When the triangulation method is used to measure short-range distances below 2000mm (called displacement in the industry), the accuracy can reach up to 1um. Phase laser ranging is generally used in precision ranging, and the accuracy is generally in the millimeter level. The laser echo analysis method is used for long-distance measurement.

[0004] In the triangulation measurement method of short distance, affected by the angle, the short distance laser distance sensor has significant characteristics, such as the FT50RLA-100 series laser displacement sensor with a working distance of 70-170mm, the starting point of the range is 70mm, the end point of the range is 170mm, and the range is 100mm between the starting point and the end point. Then, the distance within 70mm of the short distance laser distance sensor cannot be measured, and we need to use the FT20RA series laser displacement sensor with a working distance of 20-80mm to measure. Therefore, short distance laser distance sensors have a variety of different models to measure working distances in different ranges.

[0005] Therefore, how to effectively reduce the starting distance of the short-range laser ranging sensor to adapt to a larger ranging range. Utility Model Content

[0006] In order to solve this technical defect in the prior art, the utility model provides an auxiliary device for laser sensor measurement, including a laser sensor, which is installed horizontally and vertically in a box with an opening on one side. An octagonal prism is arranged in front of the laser diode and the filter of the laser sensor, and the octagonal prism includes a reflective mirror surface and a perspective surface.

[0007] Preferably, the reflecting mirror surface includes a first reflecting mirror surface, a second reflecting mirror surface, a third reflecting mirror surface and a fourth reflecting mirror surface.

[0008] Preferably, the perspective surface includes a first perspective surface, a second perspective surface, a third perspective surface and a fourth perspective surface.

[0009] Preferably, the first perspective surface is attached to the laser diode and the filter of the laser sensor.

[0010] Preferably, both the upper side and the bottom side of the box body are provided with protrusions for movably mounting the octagonal prism.

[0011] Preferably, the number of the protrusions is consistent with the number of the reflective mirror surfaces, and the protrusions are located on the back side of the reflective mirror surfaces.

[0012] In summary, the beneficial effects of the utility model include: simple structure, and solving the problem of the starting distance of the range of the laser ranging sensor in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure in the embodiment of the utility model;

[0015] Figure 2 It is a schematic top view of the structure in an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure in the embodiment of the utility model;

[0017] In the figure, laser sensor 1, box 2, octagonal prism 3, object to be measured 4;

[0018] Laser diode 11, filter 12;

[0019] Opening 21, protrusion 22;

[0020] Reflective mirror surface 31 and transparent surface 32.

[0021] A first reflecting mirror surface 31.1, a second reflecting mirror surface 31.2, a third reflecting mirror surface 31.3, and a fourth reflecting mirror surface 31.4;

[0022] A first perspective surface 32.1, a second perspective surface 32.2, a third perspective surface 32.3, and a fourth perspective surface 32.4. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example: Refer to Figure 1-3 As shown, the utility model provides an auxiliary device for laser sensor measurement, including a laser sensor 1, which is installed horizontally and vertically in a box 2 with an opening 21 on one side, and an octagonal prism 3 is arranged in front of the laser diode 11 and the filter 12 of the laser sensor 1, and the octagonal prism 3 includes a reflective mirror surface 31 and a perspective surface 32.

[0027] Preferably, the reflecting mirror surface 31 includes a first reflecting mirror surface 31.1, a second reflecting mirror surface 31.2, a third reflecting mirror surface 31.3 and a fourth reflecting mirror surface 31.4.

[0028] Preferably, the perspective surface 32 includes a first perspective surface 32.1, a second perspective surface 32.2, a third perspective surface 32.3 and a fourth perspective surface 32.4.

[0029] Preferably, the first perspective surface 32 . 1 is attached to the laser diode 11 and the filter 12 of the laser sensor 1 .

[0030] Preferably, both the upper side and the bottom side of the box body 2 are provided with protrusions 22 for movably mounting the octagonal prism 3 .

[0031] Preferably, the number of the protrusions 22 is consistent with the number of the reflective mirror surfaces 31 , and the protrusions 22 are located on the back side of the reflective mirror surface 31 .

[0032] The laser light emitted by the laser diode 11 enters the octagonal prism 3 through the first perspective surface 32.1, is refracted by the reflecting mirror surface 31 in the main body of the octagonal prism 3, and is emitted through the fourth perspective surface 32.4 to illuminate the object 4 to be measured; the light reflected by the object 4 to be measured enters the octagonal prism 3 through the fourth perspective surface 32.4, is refracted by the reflecting mirror surface 31 in the main body of the octagonal prism 3, and is illuminated on the filter 12 through the first perspective surface 32.1.

[0033] In summary, the beneficial effects of the utility model include: simple structure, and solving the problem of the starting distance of the range of the laser ranging sensor in the prior art.

[0034] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although this specification is described in accordance with the implementation mode, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An auxiliary device for laser sensor measurement, comprising a laser sensor (1), characterized in that: The laser sensor (1) is installed transversely and vertically in a box (2) with an opening (21) on one side. An octagonal prism (3) is arranged in front of a laser diode (11) and a filter (12) of the laser sensor (1). The octagonal prism (3) includes a reflective mirror surface (31) and a perspective surface (32).

2. The auxiliary device for laser sensor measurement according to claim 1, characterized in that: The reflecting mirror surface (31) comprises a first reflecting mirror surface (31.1), a second reflecting mirror surface (31.2), a third reflecting mirror surface (31.3) and a fourth reflecting mirror surface (31.4).

3. The auxiliary device for laser sensor measurement according to claim 2, characterized in that: The perspective surface (32) comprises a first perspective surface (32.1), a second perspective surface (32.2), a third perspective surface (32.3) and a fourth perspective surface (32.4).

4. The auxiliary device for laser sensor measurement according to claim 3, characterized in that: The first perspective surface (32.1) is attached to the laser diode (11) and the filter (12) of the laser sensor (1).

5. The auxiliary device for laser sensor measurement according to claim 4, characterized in that: The upper side surface and the bottom side surface of the box body (2) are both provided with protrusions (22) for movably mounting the octagonal prism (3).

6. The auxiliary device for laser sensor measurement according to claim 5, characterized in that: The number of the protrusions (22) is consistent with the number of the reflective mirror surfaces (31), and the protrusions (22) are located on the back side of the reflective mirror surface (31).

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