Urban noise source positioning equipment

Abstract

The utility model relates to the technical field of noise detection equipment, and discloses urban noise source positioning equipment which comprises a mobile vehicle body, a sound source positioning mechanism is arranged at the top end of the mobile vehicle body, the mobile vehicle body comprises a vehicle seat, universal wheels are fixedly installed at the four corners of the bottom end of the vehicle seat respectively, and a U-shaped frame is fixedly connected to one side of the middle of the top end of the vehicle seat. A through hole is formed in the middle of the top end of the U-shaped frame. By adopting the design of the movable sound source positioning structure, the sound source positioning device comprises the sound source positioning mechanism, the sound source positioning mechanism comprises the microphone array mechanism which can rotate and can be adjusted in a lifting manner, and when the sound source positioning device is far away from a noise source or the noise intensity is weak, the microphone array mechanism can be rotated and adjusted, the direction of the noise source can be detected, and the vehicle body can be moved; and making the position close to the noise source until the position of the urban noise source is determined.

Description

A device for locating urban noise sources Technical Field

[0001] This utility model relates to the field of noise detection equipment technology, specifically to an urban noise source location device. Background Technology

[0002] When detecting noise in urban areas, sound source localization equipment is required, including acoustic imagers equipped with precision microphone array systems. These systems can capture noise sources in real time and generate visual heat maps, enabling sound source direction localization and imaging. Their advantages include non-contact detection, allowing for long-distance, non-contact detection and avoiding physical interference with the tested equipment. They are suitable for dangerous or complex scenarios.

[0003] Existing urban noise source location equipment still has the following problems when in use: its accuracy is limited. The sound source location equipment is usually designed with a fixed structure. When the distance to the noise source is far away or the noise intensity is weak, the location accuracy will be affected. For example, its acoustic imager is limited by the microphone array aperture, resolution and algorithm, and has limited accuracy in locating distant sound sources. In this case, it is often necessary to manually rotate and adjust its microphone array mechanism to determine the location of the sound source, which is quite inconvenient. Summary of the Invention

[0004] (a) Technical problems to be solved.

[0005] To address the shortcomings of existing technologies, this utility model provides an urban noise source localization device, which solves the problems mentioned in the background technology.

[0006] (ii) Technical solution.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a city noise source location device, comprising a mobile vehicle body, a sound source location mechanism at the top of the mobile vehicle body, a seat, a caster wheel fixedly installed at each of the four corners of the bottom of the seat, a U-shaped frame fixedly connected to one side of the top center of the seat, a handrail fixedly connected to the other side of the top center of the seat, a through hole in the top center of the U-shaped frame, a connecting shaft rotatably connected to the through hole, a rotating platform fixedly connected to the top of the connecting shaft, a computer host fixedly installed on one side of the top of the rotating platform, an electric lifting guide rail fixedly installed on the other side of the top of the rotating platform, a lifting seat slidably installed on the outer side of the electric lifting guide rail, a microphone array mechanism fixedly connected to one end of the lifting seat, and the microphone array mechanism connected to the computer host via a connecting cable.

[0008] As a further improvement of this utility model: a heat dissipation hole is provided on the rear side of one end of the computer host, and a data interface is provided on the front side of one end of the computer host.

[0009] As a further embodiment of this utility model: a mounting bracket is fixedly connected to the other side of the top of the seat, a pulley is fixedly connected to the bottom end of the connecting shaft, a reduction drive is fixedly installed at the other end of the mounting bracket, another pulley is fixedly connected to the bottom output end of the reduction drive, and the two pulleys are connected by a transmission belt sleeved on their outer sides.

[0010] As a further embodiment of this utility model: two second limiting clips are fixedly connected to one side of the top of the seat in a symmetrical manner, and two first limiting clips are fixedly connected to the other side of the top of the seat in a symmetrical manner. The two first limiting clips and the two second limiting clips are slidably connected to the same protective shell. The protective shell is made of aluminum alloy and has two handles fixedly connected to its top in a symmetrical manner. The bottom of the protective shell is slidably attached to the top of the seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, a movable sound source positioning structure is adopted, which includes a sound source positioning mechanism, which includes a rotatable and height-adjustable microphone array mechanism. When the distance to the noise source is far away or the noise intensity is weak, the microphone array mechanism can be rotated and adjusted first to detect the location of the noise source, and the vehicle body can be moved to get closer to the noise source until the location of the urban noise source is determined.

[0013] 2. In this utility model, a protective shell is provided on the outside of the overall sound source locating mechanism. The protective shell is made of aluminum alloy and can provide good protection for the sound source locating mechanism when the overall urban noise source locating device is not in use. When the overall urban noise source locating device is in use, the protective shell is slidably connected between the four limit cards at the top of the seat, and the protective shell can be easily disassembled by holding the handle above it without affecting the noise source locating operation of the sound source locating mechanism. Attached Figure Description

[0014] Figure 1 is an overall perspective view of this utility model;

[0015] Figure 2 is a perspective view of the entire disassembled protective shell of this utility model;

[0016] Figure 3 is a perspective view of the mobile vehicle body of this utility model;

[0017] Figure 4 is a three-dimensional view of the sound source positioning mechanism of this utility model.

[0018] In the diagram: 1. Mobile vehicle body; 2. Sound source positioning mechanism; 3. Protective shell; 4. Handle; 11. Seat; 12. Casters; 13. Handrail; 14. U-shaped frame; 15. First limit clamp; 16. Second limit clamp; 21. Connecting shaft; 22. Rotating platform; 23. Electric lifting guide rail; 24. Lifting seat; 25. Microphone array mechanism; 26. Computer host; 27. Connecting cable; 28. Mounting bracket; 29. ​​Gear reducer; 210. Pulley; 211. Drive belt. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please refer to Figures 1-4. In this embodiment of the present invention, a city noise source location device includes a mobile vehicle 1. A sound source location mechanism 2 is provided at the top of the mobile vehicle 1. The mobile vehicle 1 includes a seat 11. A universal wheel 12 is fixedly installed at each of the four corners of the bottom of the seat 11. A U-shaped frame 14 is fixedly connected to one side of the middle of the top of the seat 11, and a handrail 13 is fixedly connected to the other side of the middle of the top of the seat 11. A through hole is opened in the middle of the top of the U-shaped frame 14. The sound source location mechanism 2 includes a connecting shaft 21 rotatably connected to the through hole. A rotating platform 22 is fixedly connected to the top of the connecting shaft 21. A computer host 26 is fixedly installed on one side of the top of the rotating platform 22. An electric lifting guide rail 23 is fixedly installed on the other side of the electric lifting guide rail 23. A lifting seat 24 is slidably installed on the outside of the electric lifting guide rail 23. A microphone array mechanism 25 is fixedly connected to one end of the lifting seat 24. The microphone array mechanism 25 is connected to the computer host 26 through a connecting line 27. The whole adopts a movable sound source positioning structure design, which includes a sound source positioning mechanism 2, which includes a rotatable and height-adjustable microphone array mechanism 25. When the distance to the noise source is far away or the noise intensity is weak, the microphone array mechanism 25 can be rotated and adjusted first to detect the location of the noise source, and the moving vehicle 1 can be moved to get closer to the noise source until the location of the urban noise source is determined.

[0023] The computer host 26 has a heat dissipation hole on the rear side of one end, which can be used for auxiliary heat dissipation of the computer host 26. The computer host 26 has a data interface on the front side of one end, which can be connected to a data cable to transmit sound source detection data.

[0024] A mounting bracket 28 is fixedly connected to the other side of the top of the seat 11. A pulley 210 is fixedly connected to the bottom of the connecting shaft 21. A reduction drive 29 is fixedly installed at the other end of the mounting bracket 28. Another pulley 210 is fixedly connected to the bottom output end of the reduction drive 29. The two pulleys 210 are connected by a transmission belt 211 sleeved on their outer sides. The reduction drive 29 can drive the pulley 210 connected to its output end to rotate, and then drive the pulley 210 at the bottom of the connecting shaft 21 to rotate through the transmission belt 211, thereby realizing the rotation angle adjustment of the turntable 22 and the angle adjustment of the microphone array mechanism 25.

[0025] Two second limiting clips 16 are fixedly connected to one side of the top of the seat 11 in a symmetrical manner, and two first limiting clips 15 are fixedly connected to the other side of the top of the seat 11 in a symmetrical manner. The two first limiting clips 15 and the two second limiting clips 16 are slidably connected to the same protective shell 3. The protective shell 3 is made of aluminum alloy and has two handles 4 fixedly connected to its top in a symmetrical manner. The bottom of the protective shell 3 slides against the top of the seat 11. The outer side of the overall sound source positioning mechanism 2 is provided with a protective shell 3, which is made of aluminum alloy. When the overall urban noise source positioning equipment is not in use, it can provide good protection for the sound source positioning mechanism 2. When the overall urban noise source positioning equipment is in use, since the protective shell 3 is slidably connected between the four limiting clips at the top of the seat 11, the handles 4 above it can be held to easily remove the protective shell 3 without affecting the noise source positioning operation of the sound source positioning mechanism 2.

[0026] The working principle of this utility model is as follows: The overall design adopts a movable sound source positioning structure, which includes a sound source positioning mechanism 2, which includes a rotatable and height-adjustable microphone array mechanism 25. That is, its reduction drive 29 can drive the pulley 210 connected to its output end to rotate, and then drive the pulley 210 at the bottom of the connecting shaft 21 to rotate through the transmission belt 211, thereby realizing the rotation angle adjustment of the rotating platform 22, realizing the angle adjustment of the microphone array mechanism 25, and the height adjustment of the microphone array mechanism 25 can be achieved by driving the lifting seat 24 to drive the microphone array mechanism 25. When the distance to the noise source is far away or the noise intensity is weak, since the microphone array mechanism 25, together with the computer host 26, can capture the noise source in real time and generate a visual heat map, the sound source direction positioning and imaging can be achieved. The microphone array mechanism 25 can be rotated and adjusted to be closer to the sound source, and the moving vehicle 1 can be moved to be closer to the noise source until the location of the urban noise source is determined.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A noise source locating device for urban areas, comprising a mobile vehicle (1), wherein a noise source locating mechanism (2) is provided at the top of the mobile vehicle (1); characterized in that: The mobile vehicle body (1) includes a seat (11), and a universal wheel (12) is fixedly installed at each of the four corners of the bottom end of the seat (11). A U-shaped frame (14) is fixedly connected to one side of the top center of the seat (11), and a handrail (13) is fixedly connected to the other side of the top center of the seat (11). A through hole is opened in the top center of the U-shaped frame (14). The sound source positioning mechanism (2) includes a connecting shaft (21) rotatably connected in the through hole. A rotating platform (22) is fixedly connected to the top of the connecting shaft (21). A computer host (26) is fixedly installed on one side of the top of the rotating platform (22), and an electric lifting guide rail (23) is fixedly installed on the other side of the top of the rotating platform (22). A lifting seat (24) is slidably installed on the outside of the electric lifting guide rail (23). A microphone array mechanism (25) is fixedly connected to one end of the lifting seat (24), and the microphone array mechanism (25) is connected to the computer host (26) through a connecting line (27).

2. The urban noise source localization device according to claim 1, characterized in that: The computer host (26) has a heat dissipation hole on the rear side of one end and a data interface on the front side of one end.

3. The urban noise source localization device according to claim 1, characterized in that: A mounting bracket (28) is fixedly connected to the other side of the top of the seat (11), and a pulley (210) is fixedly connected to the bottom of the connecting shaft (21).

4. The urban noise source locator according to claim 3, characterized in that: The other end of the mounting bracket (28) is fixedly mounted with a speed reduction drive (29), and the bottom output end of the speed reduction drive (29) is fixedly connected to another pulley (210). The two pulleys (210) are connected by a transmission belt (211) sleeved on their outer side.

5. The urban noise source localization device according to claim 1, characterized in that: Two second limiting clips (16) are fixedly connected to one side of the top of the seat (11) in a symmetrical manner, and two first limiting clips (15) are fixedly connected to the other side of the top of the seat (11) in a symmetrical manner.

6. The urban noise source locator according to claim 5, characterized in that: The two first limit cards (15) and the two second limit cards (16) are slidably connected to the same protective shell (3).

7. The urban noise source localization device according to claim 6, characterized in that: The protective shell (3) is made of aluminum alloy and has two handles (4) fixedly connected to the top in a symmetrical manner. The bottom of the protective shell (3) slides against the top of the seat (11).

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