A monitoring prism with light filtering function

Abstract

The utility model discloses a monitoring prism with light filtering function, including prism shell, prism shell front cover and right angle support frame, one side of right angle support frame top is installed with prism shell, the inside of prism shell is placed with pyramid prism, one side of prism shell is equipped with waterproof washer no.

Description

Technical Field

[0001] This utility model relates to the field of monitoring prism technology, specifically a monitoring prism with a light filtering function. Background Technology

[0002] Currently, due to extensive construction projects such as rail transit and urban development, the market demands higher positioning accuracy from monitoring prisms. However, in certain specialized measurement environments, besides common obstructions like dust, rain, and fog, specific light waves can also affect the detection results of lidar. In some special situations, when lidar works in conjunction with a total station for surveying, the measuring prism at the measurement site can influence the lidar's measurement performance. Reflection from the measuring prism causes significant point cloud expansion at the prism's position in the lidar's measurement results, thus affecting the lidar's measurement accuracy and hindering accurate data acquisition, ultimately impacting the measurement outcome. Utility Model Content

[0003] The purpose of this invention is to provide a monitoring prism with a light filtering function to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a monitoring prism with a light filtering function, comprising a prism shell, a front cover of the prism shell, and a right-angle support frame. The prism shell is installed on one side of the top of the right-angle support frame. A pyramidal prism is placed inside the prism shell. A waterproof gasket is provided on one side of the prism shell. A second waterproof gasket is provided on the front cover of the prism shell on the corresponding side of the prism shell. A filter glass sheet is provided between the first waterproof gasket and the second waterproof gasket.

[0005] The process involves first placing the corner cube prism into the prism housing and then gluing it in place. A waterproof gasket (first type) is then placed on the prism housing, and a second waterproof gasket (second type) is placed inside the front cover of the prism housing. A filter glass is then placed between the two waterproof gaskets. The prism housing and its front cover are then secured together using the prism housing locking screws. The filter glass, positioned between the two waterproof gaskets, protects both the corner cube prism and the filter glass. Finally, the prism housing is secured to the right-angle support frame using the prism fixing screws. The filter glass filters out interference light that affects the lidar mapping process, reduces point cloud expansion of the prism, and improves the measurement accuracy of the lidar.

[0006] Preferably, the right-angle support frame has a fixing hole at its top, and the prism shell has a fixing screw hole on its side. A prism fixing screw is inserted into the fixing hole, and one end of the prism fixing screw passes through the fixing hole and is threaded into the fixing screw hole. By threading the prism fixing screw through the fixing hole and into the fixing screw hole, the right-angle support frame and the prism shell are assembled and fixed.

[0007] Preferably, the prism shell is glued to the corner cube prism, ensuring the corner cube prism is stably fixed inside the prism shell.

[0008] Preferably, the back of the prism housing has multiple locking holes, and a prism housing locking screw is inserted into each locking hole. One end of the prism housing locking screw passes through the prism housing and is threadedly connected to the front cover of the prism housing. The assembly and installation of the prism housing and the front cover of the prism housing are achieved through the prism housing locking screw.

[0009] Preferably, a through hole is provided in the middle of the front cover of the prism housing. The through hole corresponds to the filter glass, allowing light to pass through the through hole, filter glass, and enter the corner prism.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention solves the problem of point cloud expansion at the reflective prism position in lidar measurements by adding a filter glass plate that can filter out 905nm laser light to the prism. The installation and fixing method, using waterproof gaskets one and two with the filter glass plate placed between them, provides waterproof and dustproof functions. The filter glass plate also protects the corner prism from dust, sand, and other contaminants that could damage its surface. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0014] Figure 3 This is an exploded view of the present invention;

[0015] Figure 4 This is a schematic diagram of the assembly structure of the prism shell and the front cover of the prism shell according to this utility model.

[0016] In the diagram: 1. Prism housing; 2. Prism housing front cover; 3. Right-angle support frame; 4. Pyramidal prism; 5. Waterproof gasket one; 6. Filter glass plate; 7. Prism fixing screw; 8. Prism housing locking screw; 9. Waterproof gasket two; 10. Fixing hole; 11. Locking hole; 12. Fixing screw hole. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-4 This utility model provides a monitoring prism with a light filtering function, including a prism shell 1, a prism shell front cover 2, and a right-angle support frame 3. The prism shell 1 is installed on one side of the top of the right-angle support frame 3. A pyramidal prism 4 is placed inside the prism shell 1. A waterproof gasket 5 is provided on one side of the prism shell 1. A waterproof gasket 9 is provided on the side of the prism shell 1 corresponding to the front cover 2. A light filtering glass sheet 6 is provided between the waterproof gasket 5 and the waterproof gasket 9.

[0019] The top of the right-angle support frame 3 is provided with a fixing hole 10, and the side of the prism shell 1 is provided with a fixing screw hole 12. A prism fixing screw 7 is inserted into the fixing hole 10, and one end of the prism fixing screw 7 passes through the fixing hole 10 and is threadedly connected to the fixing screw hole 12.

[0020] Specifically, by threading the prism fixing screw 7 through the fixing hole 10 and the fixing screw hole 12, the right-angle support frame 3 and the prism shell 1 are assembled and fixed.

[0021] The prism shell 1 is glued to the pyramidal prism 4.

[0022] Specifically, the glue allows the pyramidal prism 4 to be stably fixed inside the prism shell 1.

[0023] Multiple locking holes 11 are provided on the back of the prism housing 1. A prism housing locking screw 8 is inserted into the locking hole 11. One end of the prism housing locking screw 8 passes through the prism housing 1 and is threadedly connected to the front cover 2 of the prism housing.

[0024] Specifically, the prism housing 1 and the prism housing front cover 2 are assembled and installed using the prism housing locking screw 8.

[0025] A through hole is provided in the middle of the front cover 2 of the prism shell.

[0026] Specifically, the through hole corresponds to the filter glass plate 6, allowing light to pass through the through hole and enter the corner prism 4 via the filter glass plate 6.

[0027] The working principle is as follows: First, the corner cube prism 4 is placed into the prism housing 1 and glued in place. A waterproof gasket 5 is placed on the prism housing 1, and a second waterproof gasket 9 is placed in the front cover 2 of the prism housing. Then, a filter glass plate 6 is placed on the waterproof gasket 5. The prism housing 1 and the front cover 2 are then installed and fixed together using the prism housing locking screw 8. The filter glass plate 6, installed between the waterproof gaskets 5 and 9, protects the corner cube prism 4 and the filter glass plate 6. Finally, the prism housing is locked and fixed together with the right-angle support frame 3 using the prism fixing screw 7. The function of the filter glass plate 6 is to filter out the light reflected back from the reflective prism by the lidar. Because the reflective prism reflects the light back, it can affect the lidar measurement and cause point cloud expansion.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A monitoring prism with light filtering function, comprising a prism shell (1), a prism shell front cover (2) and a right-angle support frame (3), characterized in that, A prism shell (1) is installed on one side of the top of the right-angle support frame (3). A pyramidal prism (4) is placed inside the prism shell (1). A waterproof gasket (5) is provided on one side of the prism shell (1). A waterproof gasket (9) is provided on the side of the prism shell (1) corresponding to the front cover (2) of the prism shell. A filter glass sheet (6) is provided between the waterproof gasket (5) and the waterproof gasket (9).

2. The monitoring prism with light filtering function according to claim 1, characterized in that: The right-angle support frame (3) has a fixing hole (10) on its top, and the prism shell (1) has a fixing screw hole (12) on its side. A prism fixing screw (7) is inserted into the fixing hole (10), and one end of the prism fixing screw (7) passes through the fixing hole (10) and is threadedly connected to the fixing screw hole (12).

3. A monitoring prism with a filtering function according to claim 1, characterized in that: The prism shell (1) is glued to the pyramidal prism (4).

4. The monitoring prism with light filtering function according to claim 1, characterized in that: The back of the prism housing (1) is provided with multiple locking holes (11), and a prism housing locking screw (8) is inserted into the locking hole (11). One end of the prism housing locking screw (8) passes through the prism housing (1) and is threadedly connected to the front cover (2) of the prism housing.

5. The monitoring prism with light filtering function according to claim 1, characterized in that: A through hole is provided in the middle of the front cover (2) of the prism shell.

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