Urban noise sensing equipment carried by unmanned aerial vehicle

Abstract

The utility model relates to the field of noise detection and monitoring, in particular to urban noise sensing equipment carried by an unmanned aerial vehicle, which comprises a noise detection sensor, an upper support frame is sleeved on the outer side of the noise detection sensor, and a wind sound weakening mechanism is arranged below the upper support frame. The wind sound weakening mechanism comprises two groups of weakening plates arranged below the upper supporting frame, guide grooves are formed in one sides of the weakening plates, a plurality of groups of air inlet columns are fixedly connected to the top ends of the weakening plates, air inlet holes are formed in the bottom ends of the air inlet columns, air outlet columns are fixedly connected to the top ends of the air inlet columns, and air outlet holes are formed in the air outlet columns; the diameter of the air outlet hole is larger than that of the air inlet hole. After wind on the front side and the rear side of the unmanned aerial vehicle encounters the weakening plates, the wind direction is changed through the guide grooves so as to reduce stress of the upper supporting frame, airflow enters from the air inlet holes and then is exhausted through the air outlet holes, air pressure is reduced through the diameter difference between the air inlet holes and the air outlet holes, then resonance strength is reduced, and therefore the influence of the airflow on noise collection is reduced.

Description

Technical Field

[0001] The utility model relates to the field of noise detection and monitoring, and in particular to a city noise sensing device carried by an unmanned aerial vehicle. Background Art

[0002] Existing urban noise detection is mostly positioning monitoring, and the detection range is limited, resulting in inaccurate noise detection results in a certain area and large errors. Today, with the rapid development of drone technology, people are trying to expand the scope of noise detection and improve its accuracy by using drones to drive noise detection equipment for mobile monitoring.

[0003] However, during the detection process, the airflow encountered by the drone during flight will impact the sensor and the drone, resonate with the sensor's supporting structure, and create noise, thereby affecting the sensor's operation and greatly reducing the accuracy of the data sensed by the sensor.

[0004] Therefore, it is necessary to invent a city noise sensing device carried by a drone to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an urban noise sensing device carried by an unmanned aerial vehicle. The noise detection sensor and the wind noise reduction mechanism cooperate to reduce the influence of airflow on the noise detection sensor, so as to solve the problem in the prior art that the airflow encountered by the unmanned aerial vehicle during flight will impact the sensor and the unmanned aerial vehicle, resonate with the supporting mechanism of the sensor, and create noise, thereby affecting the operation of the sensor and greatly reducing the accuracy of the data sensed by the sensor.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an urban noise sensing device carried by an unmanned aerial vehicle, comprising a noise detection sensor, an upper support frame is sleeved on the outer side of the noise detection sensor, a wind sound attenuation mechanism is arranged below the upper support frame, and the wind sound attenuation mechanism includes two groups of weakening plates arranged below the upper support frame, a guide groove is opened on one side of the weakening plate, a plurality of groups of air inlet columns are fixedly connected to the top end of the weakening plate, an air inlet hole is opened at the bottom end of the air inlet column, an air outlet column is fixedly connected to the top end of the air inlet column, an air outlet hole is opened inside the air outlet column, and the diameter of the air outlet hole is larger than the diameter of the air inlet hole.

[0007] Preferably, two groups of reinforcing connecting plates are fixedly connected to the bottom end of the upper support frame, a sound insulation board is installed at the bottom end of the reinforcing connecting plate, the interior of the sound insulation board is filled with sound-absorbing cotton, and one side of the sound insulation board is fixedly connected to the inner side of the weakening plate.

[0008] Preferably, two sets of movable grooves are opened at the top of the upper support frame, and a maintaining block is slidably connected inside the movable groove. A connecting frame is fixedly connected to one side of the maintaining block, and an end of the connecting frame away from the maintaining block is fixedly connected to one side of the noise detection sensor.

[0009] Preferably, a horizontal telescopic rod is fixedly connected to one side of the maintaining block, a buffer spring is provided on the outer wall of the horizontal telescopic rod, and a buffer block is fixedly connected to one end of the horizontal telescopic rod away from the maintaining block, and the buffer block is slidably connected to the inside of the movable groove.

[0010] Preferably, the bottom end of the buffer block is rotatably connected to an oblique telescopic rod, the outer wall sleeve of the oblique telescopic rod is provided with a buffer spring 1, one side of the buffer spring 1 is rotatably connected to a telescopic sleeve, and the top of the telescopic sleeve is slidably connected to the bottom end of the upper support frame.

[0011] Preferably, a receiving groove is provided on the surface of the upper support frame, and the noise detection sensor slides inside the receiving groove.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] Through the cooperation of the noise detection sensor and the wind noise reduction mechanism, the wind on the front and rear sides of the drone encounters the reduction plate, and the wind direction is changed through the guide slot to reduce the force on the upper support frame, and the airflow enters from the air inlet and is discharged through the air outlet. The diameter difference between the two is used to reduce the air pressure, thereby reducing the resonance strength, thereby reducing the impact of the airflow on noise collection;

[0014] Through the coordination of the upper support frame, telescopic sleeve and other parts, the noise detection sensor is buffered in the vertical direction by utilizing the coordination of the buffer spring 1 and the movable groove, and the noise detection sensor is buffered in the horizontal direction by utilizing the coordination of the buffer spring 2 and the horizontal telescopic rod, thereby reducing the resonance degree of the noise detection sensor and further reducing the influence of airflow and drone on noise collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the overall structure of the utility model from a third viewing angle;

[0019] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0020] Description of reference numerals:

[0021] 1. Noise detection sensor; 2. Upper support frame; 201. Connecting frame; 3. Wind noise reduction mechanism; 301. Reduction plate; 302. Guide groove; 303. Air inlet column; 304. Air inlet hole; 305. Air outlet column; 306. Reinforced connecting plate; 307. Sound insulation board; 308. Air outlet hole; 4. Maintaining block; 5. Telescopic sleeve; 6. Oblique telescopic rod; 7. Buffer spring one; 8. Movable groove; 9. Buffer block; 10. Accommodating groove; 11. Buffer spring two; 12. Horizontal telescopic rod. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides Figure 1-4The urban noise sensing device carried by an unmanned aerial vehicle shown in the figure includes a noise detection sensor 1, an upper support frame 2 is sleeved on the outer side of the noise detection sensor 1, a wind sound attenuation mechanism 3 is arranged below the upper support frame 2, and the wind sound attenuation mechanism 3 includes two groups of attenuation plates 301 arranged below the upper support frame 2, a guide groove 302 is opened on one side of the attenuation plate 301, and a rounded corner with an arc is arranged on the top of the guide groove 302, and the rounded corner is used to change the direction of the wind to dissipate energy and reduce resonance with other parts, a plurality of groups of air inlet columns 303 are fixedly connected to the top of the attenuation plate 301, and an air inlet hole 304 is opened at the bottom end of the air inlet column 303, so that part of the wind force enters the interior of the air inlet column 303 through the air inlet hole 304, and an air outlet column 305 is fixedly connected to the top of the air inlet column 303, and an air outlet column 305 is opened inside the air outlet column 305 Hole 308, the diameter of the air outlet hole 308 is larger than the diameter of the air inlet hole 304, and two sets of reinforced connecting plates 306 are fixedly connected to the bottom end of the upper support frame 2 to strengthen the clamping of other parts. A sound insulation board 307 is installed at the bottom end of the reinforced connecting plate 306, and the interior of the sound insulation board 307 is filled with sound-absorbing cotton. The weakening plate 301 is fixed by the sound insulation board 307, and the noise is further weakened by the characteristics of the sound insulation board 307. One side of the sound insulation board 307 is fixedly connected to the inner side of the weakening plate 301. After the wind on the front and rear sides of the drone encounters the weakening plate 301, the wind direction is changed through the guide groove 302 to reduce the force on the upper support frame 2, and the airflow enters from the air inlet hole 304 and is discharged through the air outlet hole 308, and the diameter difference between the two is used to reduce the air pressure, thereby reducing the resonance force, thereby reducing the influence of the airflow on noise collection.

[0024] Refer to the instruction manual Figure 1-4Two groups of movable grooves 8 are provided at the top of the upper support frame 2, and a maintaining block 4 is slidably connected inside the movable groove 8. A connecting frame 201 is fixedly connected to one side of the maintaining block 4, and the end of the connecting frame 201 away from the maintaining block 4 is fixedly connected to one side of the noise detection sensor 1. The noise detection sensor 1 is connected by the connecting frame 201 and the maintaining block 4. A horizontal telescopic rod 12 is fixedly connected to one side of the maintaining block 4. The outer wall of the horizontal telescopic rod 12 is sleeved with a buffer spring 2 11. The buffer spring 2 11 extends to both ends in a natural state. A buffer block 9 is fixedly connected to the end of the horizontal telescopic rod 12 away from the maintaining block 4. The buffer block 9 is slidably connected to the inside of the movable groove 8. The vibration in the horizontal direction is buffered by the cooperation of the maintaining block 4, the buffer block 9 and the buffer spring 2 11. The bottom end of the buffer block 9 is rotatably connected to the oblique telescopic rod 6. The outer wall of the oblique telescopic rod 6 is sleeved with a buffer spring 7, which extends to both ends under natural filling. One side of the buffer spring 7 is rotatably connected with a telescopic sleeve 5, and the top of the telescopic sleeve 5 is slidably connected to the bottom end of the upper support frame 2, so that the telescopic sleeve 5 can be telescoped along the upper support frame 2 to provide space for buffering. A receiving groove 10 is provided on the surface of the upper support frame 2, and the noise detection sensor 1 slides inside the receiving groove 10. Through the cooperation of the upper support frame 2, the telescopic sleeve 5 and other parts, the noise detection sensor 1 is buffered in the vertical direction by utilizing the cooperation of the buffer spring 7 and the movable groove 8, and the noise detection sensor 1 is buffered in the horizontal direction by utilizing the cooperation of the buffer spring 2 11 and the horizontal telescopic rod 12, thereby reducing the resonance degree of the noise detection sensor 1 and further reducing the influence of airflow and drones on noise collection.

[0025] How this utility works:

[0026] Refer to the instruction manual Figure 1-4 When the drone carries the noise detection sensor 1 and the upper support frame 2 for flight, the wind encountered by the front of the noise detection sensor 1 will cause the drone and the upper support frame 2 to resonate and generate noise, thus interfering with the operation of the noise detection sensor 1. At this time, the guide groove 302 is used to change the wind direction to reduce the force on the upper support frame 2, and the airflow enters from the air inlet 304 and is discharged through the air outlet 308. The diameter difference between the two is used to reduce the air pressure, thereby preliminarily reducing the resonance intensity. After the residual airflow passes through the sound insulation board 307, the noise is further weakened by the sound-absorbing cotton inside the sound insulation board 307, thereby reducing the influence of the airflow on the noise collection again.

[0027] Refer to the instruction manual Figure 1-4When the drone vibrates, the noise detection sensor 1 is elastically buffered by the buffer spring 7 in the vertical direction by the cooperation between the buffer spring 17 and the movable groove 8, so that the upper support frame 2 and the telescopic sleeve 5 can move by telescoping and resetting, thereby offsetting the vibration energy in the vertical direction. The noise detection sensor 1 is buffered in the horizontal direction by the cooperation between the buffer spring 2 11 and the horizontal telescopic rod 12, so that the maintaining block 4 and the buffer block 9 move inside the movable groove 8 to offset the energy, thereby reducing the resonance degree of the noise detection sensor 1 and further reducing the influence of airflow and drones on noise collection.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An urban noise sensing device carried by an unmanned aerial vehicle, comprising a noise detection sensor (1), characterized in that: An upper support frame (2) is sleeved on the outer side of the noise detection sensor (1), and a wind sound reduction mechanism (3) is arranged below the upper support frame (2). The wind sound reduction mechanism (3) comprises two groups of reduction plates (301) arranged below the upper support frame (2), a guide groove (302) is provided on one side of the reduction plate (301), a plurality of groups of air inlet columns (303) are fixedly connected to the top end of the reduction plate (301), an air inlet hole (304) is provided at the bottom end of the air inlet column (303), an air outlet column (305) is fixedly connected to the top end of the air inlet column (303), an air outlet hole (308) is provided inside the air outlet column (305), and the diameter of the air outlet hole (308) is larger than the diameter of the air inlet hole (304).

2. The urban noise sensing device carried by an unmanned aerial vehicle according to claim 1, characterized in that: Two groups of reinforcing connecting plates (306) are fixedly connected to the bottom end of the upper support frame (2), a sound insulation plate (307) is installed at the bottom end of the reinforcing connecting plate (306), the interior of the sound insulation plate (307) is filled with sound-absorbing cotton, and one side of the sound insulation plate (307) is fixedly connected to the inner side of the weakening plate (301).

3. The urban noise sensing device carried by an unmanned aerial vehicle according to claim 1, characterized in that: Two groups of movable grooves (8) are provided at the top of the upper support frame (2), and a maintaining block (4) is slidably connected inside the movable groove (8). A connecting frame (201) is fixedly connected to one side of the maintaining block (4), and an end of the connecting frame (201) away from the maintaining block (4) is fixedly connected to one side of the noise detection sensor (1).

4. The urban noise sensing device carried by an unmanned aerial vehicle according to claim 3, characterized in that: A horizontal telescopic rod (12) is fixedly connected to one side of the maintaining block (4), a second buffer spring (11) is sleeved on the outer wall of the horizontal telescopic rod (12), and a buffer block (9) is fixedly connected to one end of the horizontal telescopic rod (12) away from the maintaining block (4), and the buffer block (9) is slidably connected to the inside of the movable groove (8).

5. The urban noise sensing device carried by an unmanned aerial vehicle according to claim 4, characterized in that: The bottom end of the buffer block (9) is rotatably connected to an oblique telescopic rod (6), an outer wall sleeve of the oblique telescopic rod (6) is provided with a buffer spring 1 (7), one side of the buffer spring 1 (7) is rotatably connected to a telescopic sleeve (5), and the top of the telescopic sleeve (5) is slidably connected to the bottom end of the upper support frame (2).

6. The urban noise sensing device carried by an unmanned aerial vehicle according to claim 1, characterized in that: A receiving groove (10) is provided on the surface of the upper support frame (2), and the noise detection sensor (1) slides inside the receiving groove (10).

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