Acoustic imager, unmanned aerial vehicle device and mobile device

Abstract

The utility model provides an acoustic imager, an unmanned aerial vehicle device and a mobile device.The acoustic imager is installed on a mobile device body and comprises a bearing shell, a microphone and a windshield, the microphone is connected with the bearing shell, and a hollow structure is formed between the microphone and the bearing shell; one end of the windproof cover is detachably connected to the bearing shell, the other end of the windproof cover is provided with an opening, and the windproof cover surrounds the microphone and blocks the gap. When the acoustic imager is installed on the unmanned aerial vehicle for inspection, interference of noise generated by a propeller of the unmanned aerial vehicle and other noise on the acoustic imager can be reduced by arranging the windshield, and the detection accuracy of the acoustic imager is improved; besides, a hollow structure is formed between the microphone and the bearing shell, so that the weight of the microphone and / or the bearing shell is reduced, the weight of the acoustic imager is reduced, the load of the unmanned aerial vehicle is reduced, the flight time of the unmanned aerial vehicle provided with the acoustic imager is prolonged, and the inspection efficiency of the unmanned aerial vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of acoustic imaging technology, and in particular to an acoustic imager, a drone and a mobile device. Background Art

[0002] Acoustic imager products are widely used in the power sector. They can effectively identify local discharge points in high-voltage cables, insulated terminals and other areas, provide fault prediction for power maintenance, and safeguard power safety. How to achieve effective identification on high-voltage power transmission lines? In actual applications, inspectors will use drones equipped with acoustic imaging equipment to conduct remote inspections. However, when combining the acoustic imager with the drone, the noise of the drone's own propeller will affect the accuracy of the acoustic imager's detection, and the heavy weight of the acoustic imager will also reduce the flight time and efficiency of the drone during inspections. Utility Model Content

[0003] In view of this, the present application provides an acoustic imager to solve the problem that the existing acoustic imager is installed on a drone for inspection, which causes high noise and heavy weight, resulting in poor inspection effect. The present application also provides an unmanned vehicle and device including the above acoustic imager. The present application also provides a mobile device including the above acoustic imager.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] An acoustic imager, characterized in that it is installed on a mobile device body, comprising:

[0006] load-bearing shell;

[0007] A microphone is connected to the carrying shell and forms a hollow structure with the carrying shell;

[0008] A windshield is detachably connected to the bearing shell at one end and has an opening at the other end. The windshield surrounds the microphone and blocks the hollow structure.

[0009] Optional, including:

[0010] A main chip is arranged on the carrying shell;

[0011] A heat sink is arranged close to the main chip and can absorb the heat of the main chip;

[0012] The cooling element is arranged on a side of the heat sink away from the main chip, and can cool the main chip by cooling the heat sink.

[0013] Optionally, the heat sink and the carrying shell form a chamber, and the cooling element is located in the chamber, wherein:

[0014] The cooling element is a fan, an end of the chamber close to the main chip is provided with an air inlet communicated with the outside, and an end of the chamber far from the main chip is provided with an air outlet communicated with the outside.

[0015] Optionally, a buffer member capable of conducting heat is provided between the main chip and the heat sink.

[0016] Optionally, the wind shield is a triangular prism, quadrangular prism, hexagonal prism, octagonal prism or cylindrical columnar structure, and one end of the columnar structure is connected to the bearing shell, and the other end is the opening.

[0017] Optionally, the arrangement shape of the sound receiving holes of the microphone matches the cross-sectional shape of the windshield.

[0018] Optionally, a sound absorbing member is provided on the inner wall of the windshield.

[0019] Optionally, a connecting shaft is further included, and the connecting shaft is rotatably connected to the mobile device body to adjust the angle of the acoustic imager.

[0020] A drone device comprises the mobile device body and the acoustic imager.

[0021] A mobile device comprises the mobile device body and the acoustic imager.

[0022] The acoustic imager provided in the present application, when the acoustic imager is installed on a drone for inspection, can reduce the interference of noise generated by the drone propeller and other noises on the acoustic imager by providing a windshield, thereby improving the accuracy of detection by the acoustic imager; in addition, a hollow structure is formed between the microphone and the carrying shell, which reduces the weight of the microphone and / or the carrying shell, thereby reducing the weight of the acoustic imager and reducing the load on the drone, thereby increasing the flight time of the drone equipped with the above-mentioned acoustic imager, and further improving its inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 A three-dimensional diagram of the acoustic imager provided for this embodiment;

[0025] Figure 2 for Figure 1 Section view at AA;

[0026] Figure 3 Schematic diagram of air inlet and outlet of the chamber;

[0027] Figure 4 This is an exploded view of the acoustic imager;

[0028] Figure 5 This is a three-dimensional picture of the acoustic imager from another angle;

[0029] Figure 6 A three-dimensional diagram of the carrier shell and the microphone;

[0030] Figure 7 is a front view of the carrying case and the microphone;

[0031] Figure 8 A 3D image of the drone installation.

[0032] Figure 1-Figure 8 middle:

[0033] 1-carrying shell, 2-microphone, 3-windshield, 4-hollow structure, 5-main chip, 6-heat sink, 7-cooling element, 8-chamber, 9-air inlet, 10-air outlet, 11-buffer, 12-sound absorbing element, 13-connecting shaft, 14-safety lanyard, 15-data card cover, 16-connecting rod;

[0034] 101-rear cover, 201-sound receiving hole. DETAILED DESCRIPTION

[0035] The present application provides an acoustic imager, an unmanned device including the acoustic imager, and a mobile device including the acoustic imager.

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Acoustic imaging is based on microphone array measurement technology. It determines the position of the sound source based on the phased array principle by measuring the signal phase difference of sound waves reaching each microphone in a certain space, measures the amplitude of the sound source, and displays the distribution of the sound source in space in the form of an image, that is, obtaining a spatial sound field distribution cloud map - an acoustic image, in which the color and brightness of the image represent the strength.

[0038] like Figures 1 to 8As shown, an embodiment of the present application provides an acoustic imager, which can be used independently to detect the area to be detected. The acoustic imager can also be installed on other mobile device bodies and move with the mobile device body to realize the detection of the area to be detected. The mobile device body can be a drone or other mobile vehicles. The acoustic imager is installed on the mobile device body, mainly including a bearing shell 1, a microphone 2 and a windshield 3. The microphone 2 is connected to the bearing shell 1, and a hollow structure 4 is formed between the bearing shell 1; one end of the windshield 3 is detachably connected to the bearing shell 1, and the other end has an opening. The windshield 3 surrounds the microphone 2 and blocks the hollow structure 4. By arranging the hollow structure 4 between the microphone 2 and the bearing shell 1, the weight of the microphone 2 and / or the bearing shell 1 can be reduced to reduce the weight of the acoustic imager, so that the drone can carry the acoustic imager to fly and reduce the flight load of the drone. By surrounding the microphone 2 with the windshield 3, the interference of external noise can be avoided, so that the microphone 2 can accurately collect the sound information of the area to be detected corresponding to the opening of the windshield 3, so as to improve the accuracy of collecting sound information.

[0039] Exemplarily, a connecting rod 16 is provided between the microphone 2 and the carrier shell 1 to achieve connection between the microphone 2 and the carrier shell 1 and form a hollow structure 4. It should be noted that a plurality of connecting rods 16 are provided at intervals to achieve stability in the connection between the microphone 2 and the carrier shell 1. Further, the windshield 3 can also be provided on the connecting rod 16 to achieve connection with the carrier shell 1. Preferably, the number of connecting rods 16 provided is the same as the number of sides of the windshield 3 of the columnar structure, and the shapes of the microphone 2 and the windshield 3 are similar, so that the connection stability between the microphone 2 and the carrier shell 1 and between the windshield 3 and the carrier shell 1 can be improved at the same time. Further, the windshield 3 is connected to the carrier shell 1 by a detachable connection with the connecting rod 16. In this way, when windshields 3 of different shapes are selected according to different detection environments, the convenience of disassembly of the windshield 3 can be improved, and the replacement efficiency of the windshield 3 can be improved.

[0040] It should be noted that the windshield 3 blocks the hollow structure 4, which means that the windshield 3 connects the windshield 3 and the supporting shell 1 from the side of the microphone 2 to prevent air from entering the hollow structure 4, thereby preventing the accuracy of the sound information collected by the microphone 2 from being affected when the microphone 2 collects the sound information.

[0041] It should also be noted that the microphone 2 is used to collect sound information of the area to be tested, and combined with the image information captured by the camera of the acoustic imager to present the distribution of the sound source in space.

[0042] In addition, since the main chip 5 that needs to be cooled is arranged on the carrier shell 1, by forming a hollow structure 4 between the carrier shell 1 and the microphone 2, the gap in the area where the main chip 5 is located can be increased, which can also improve the heat dissipation effect of the main chip 5.

[0043] When the acoustic imager of the above structure is installed on a drone for inspection, the windshield 3 can reduce the interference of the noise generated by the drone propeller and other noises on the acoustic imager, thereby improving the accuracy of the acoustic imager's detection; in addition, a hollow structure 4 is formed between the microphone 2 and the supporting shell 1, which reduces the weight of the microphone 2 and / or the supporting shell 1, thereby reducing the weight of the acoustic imager and reducing the load of the drone, thereby increasing the flight time of the drone equipped with the above acoustic imager and further improving its inspection efficiency.

[0044] In some embodiments, a main chip 5, a heat sink 6 and a cooling element 7 are included. The main chip 5 is arranged on the carrier shell 1; the heat sink 6 is arranged close to the main chip 5 and can absorb the heat of the main chip 5. Specifically, when the acoustic imager is working, especially when it works for a long time, the temperature of the main chip 5 will increase, and the temperature increase will affect the data processing speed and imaging effect of the main chip 5. Here, by arranging the heat sink 6 close to the main chip 5, illustratively, the heat sink 6 is a heat dissipation metal plate, when the temperature of the main chip 5 increases, the temperature of the main chip 5 will be transferred to the heat sink 6, and the heat sink 6 will initially diffuse the heat of the main chip 5 to achieve initial heat dissipation of the main chip 5.

[0045] In this embodiment, further, the cooling member 7 is arranged on the side of the heat sink 6 away from the main chip 5, and can cool the main chip 5 by cooling the heat sink 6. It should be noted that the cooling member 7 can be a fan, or a liquid cooling plate or other structure. Here, by arranging the cooling member 7 on the side of the heat sink 6 away from the main chip 5, the cooling member 7 cools the heat sink 6 to reduce the temperature of the heat sink 6, and the heat sink 6 with a reduced temperature will absorb the heat of the main chip 5, thereby reducing the temperature of the main chip 5, and further cooling the main chip 5.

[0046] Furthermore, in order to improve the heat dissipation effect of the heat dissipation element 6 on the main chip 5 , the cooling element 7 is arranged to be aligned with the main chip 5 .

[0047] In addition, the cooling element 7 may also be arranged on a side of the main chip 5 away from the heat sink 6 , so that both the heat sink 6 and the cooling element 7 can dissipate heat for the main chip 5 .

[0048] In some embodiments, the heat sink 6 and the carrier shell 1 form a chamber 8, the cooling member 7 is located in the chamber 8, and the cooling member 7 is a fan. Specifically, the heat sink 6 and the carrier shell 1 form a nearly closed chamber 8, and after the heat sink 6 absorbs the temperature of the main chip 5, the heat is mainly integrated in the chamber 8, and the cooling member 7 is set as a fan located in the chamber 8, and an air inlet 9 and an air outlet 10 are opened in the chamber 8, so that the fan can quickly realize the exchange of gas in the chamber 8 with the gas in the external environment, and the heat of the main chip 5 dissipated by the heat sink 6 is diffused into the environment through air convection, thereby improving the cooling efficiency of the main chip 5.

[0049] Furthermore, an air inlet 9 connected to the outside is provided at one end of the chamber 8 close to the main chip 5, and an air outlet 10 connected to the outside is provided at one end of the chamber 8 far from the main chip 5. Since the temperature of the area of ​​the chamber 8 close to the main chip 5 is the highest, here, by setting the air inlet 9 on the side close to the main chip 5 and setting the air outlet 10 on the side far from the main chip 5, the heat sink 6 close to the area where the main chip 5 is located can be cooled by air convection, so as to achieve accurate heat dissipation of the area with high temperature close to the main chip 5, improve the accuracy of heat dissipation, and improve the heat dissipation efficiency.

[0050] Exemplarily, the air outlet 10 is a plurality of holes arranged in an array on the back cover 101, which can discharge gas during the operation of the lift fan while preventing foreign matter from entering the interior of the acoustic imager through the air outlet 10, thereby protecting the acoustic imager.

[0051] Here, the cooling element 7 is set as a 3015 axial flow fan. With this setting, the air duct design is simple and efficient, and the heat is quickly transferred. The design of the entire heat dissipation system effectively reduces the influence of thermal impedance on the heat transfer path, avoids the reduction of fan efficiency, efficiently removes heat, and improves the stability of chip operation.

[0052] In some embodiments, a heat-conducting buffer 11 is provided between the main chip 5 and the heat sink 6. Since the heat sink 6 is usually a heat-dissipating metal plate, and the main chip 5 is a high-precision device such as a transistor or silicon, if the heat sink 6 is in direct contact with the main chip 5 in order to improve the heat transfer efficiency of the heat sink 6, the heat sink 6 may collide with the main chip 5 and damage the main chip 5 during the use of the acoustic imager. Here, a heat-conducting buffer 11 is provided between the main chip 5 and the heat sink 6 to improve the heat transfer efficiency while protecting the main chip 5.

[0053] In some embodiments, the windshield 3 is a columnar structure of a triangular prism, a quadrangular prism, a hexagonal prism, an octagonal prism or a cylindrical shape, and one end of the columnar structure is connected to the load-bearing shell 1, and the other end is open. Specifically, windshields 3 of different shapes and lengths have different noise reduction capabilities under different degrees of noise effects, so choosing different models of windshields 3 in different noise environments can improve the noise reduction capability of the windshield 3, and the different models here refer to different shapes or different lengths of the windshield 3.

[0054] For example, the triangular prism windshield 3 is seriously affected by 4Hz noise, and has better noise reduction effect than other shapes of windshield 3 in other noise frequency bands. Under the influence of 4Hz noise, quadrangular prism, hexagonal prism, octagonal prism or cylindrical windshield 3 is preferred, and triangular prism windshield 3 is preferred in other noise frequency bands. Figure 1 , Figure 2 , Figure 4 and Figure 5 The shapes shown in .

[0055] In addition, when the windshield 3 is 80 mm to 100 mm in length, the triangular prism-shaped, quadrangular prism-shaped and octagonal prism-shaped windshield 3 has a good noise reduction effect, and the noise reduction effect is better under high-frequency noise conditions.

[0056] In this embodiment, further, at least part of the multiple side surfaces of the columnar structure are arc-shaped surfaces. Specifically, at least part of the multiple side surfaces of the columnar structure are set as arc-shaped surfaces protruding from the inside of the windshield 3 to the outside of the windshield 3, so that when the noise is transmitted to the position of the windshield 3, the sound can be rebounded, further improving the noise reduction capability of the windshield 3.

[0057] In some embodiments, the arrangement shape of the sound receiving holes 201 of the microphone 2 matches the cross-sectional shape of the windshield 3. Specifically, adjusting the arrangement shape of the sound receiving holes 201 of the microphone 2 of different shapes according to the shapes of the windshield 3 can improve the sound receiving effect of the microphone 2, improve the accuracy of the acoustic imager test, and improve the accuracy of the acoustic test results.

[0058] In some embodiments, a sound absorbing member 12 is provided on the inner wall of the windshield 3. Exemplarily, the sound absorbing member 12 may be sound absorbing cotton or a hollow sound insulation chamber 8 to absorb the noise transmitted from the outside to the windshield 3, reduce the influence of the noise on the sound reception of the microphone 2, further reduce the interference of the noise on the acoustic test, and improve the accuracy of the test results of the acoustic imager.

[0059] It should be noted that the wind shield 3 is connected to the supporting shell 1 by a detachable connection with the connecting rod 16 , so that when the sound absorbing component 12 located inside the wind shield 3 is replaced, it can also be easily replaced, thereby improving the replacement efficiency of the sound absorbing component 12 .

[0060] In some embodiments, a connecting shaft 13 is further included, and the connecting shaft 13 is rotatably connected to the mobile device body to adjust the angle of the acoustic imager. After the acoustic imager is installed on the mobile device body, the acoustic tester requires different sound reception and shooting angles for different test environments. By setting the connection angle with the mobile device body to change the sound reception and shooting angles of the acoustic tester, the connecting shaft 13 can achieve an adjustment of 10-45°, which improves the convenience of adjusting the angle of the acoustic imager.

[0061] Exemplarily, the connecting shaft 13 can be set as a damping rotating shaft to achieve adjustment of the angle of the acoustic tester relative to the mobile device body; the connecting shaft 13 can also be set as a rotating shaft and a locking member to fix the acoustic imager at a desired angle.

[0062] It should be noted that when the acoustic imager is installed on a drone, in order to ensure the balance of the overall design of the drone, the force-bearing structure of the acoustic imager is concentrated on the supporting shell 1, and the connecting shaft 13 is set on the supporting shell 1. Such a setting can improve the stability of the drone equipped with the acoustic imager during flight.

[0063] A drone device includes a mobile device body and the above-mentioned acoustic imager. Since the drone device includes the acoustic imager, the beneficial effects of the drone device brought by the acoustic imager can be found in the above content and will not be repeated here.

[0064] In some embodiments, the acoustic imager further includes a safety lanyard 14 disposed on the carrying shell 1. When the acoustic imager and the drone are mounted together through the connecting shaft 13, the safety lanyard 14 is hung on the drone to prevent the acoustic imager from falling off the drone when the connecting shaft 13 fails. In addition, a data card cover 15 is also provided on the acoustic imager, and a charging port, a USB interface, etc. are provided in the data card cover 15 to realize charging of the acoustic imager and connection with the drone.

[0065] A mobile device includes a mobile device body and the above-mentioned acoustic imager. Since the mobile device includes the acoustic imager, the beneficial effects of the mobile device brought by the acoustic imager can be found in the above content and will not be repeated here.

[0066] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0067] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0068] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0069] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0070] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0071] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An acoustic imager, characterized in that: Installed on the mobile device body, including: load-bearing shell; A microphone is connected to the carrying shell and forms a hollow structure with the carrying shell; A windshield is detachably connected to the bearing shell at one end and has an opening at the other end. The windshield surrounds the microphone and blocks the hollow structure.

2. The acoustic imager according to claim 1, characterized in that: include: A main chip is arranged on the carrying shell; A heat sink is arranged close to the main chip and can absorb the heat of the main chip; The cooling element is arranged on a side of the heat sink away from the main chip, and can cool the main chip by cooling the heat sink.

3. The acoustic imager according to claim 2, characterized in that: The heat sink and the carrying shell form a chamber, and the cooling element is located in the chamber, wherein: The cooling element is a fan, an end of the chamber close to the main chip is provided with an air inlet communicated with the outside, and an end of the chamber far from the main chip is provided with an air outlet communicated with the outside.

4. The acoustic imager according to claim 2 or 3, characterized in that: A heat-conducting buffer is arranged between the main chip and the heat sink.

5. The acoustic imager according to claim 1, characterized in that: The wind shield is a columnar structure in the shape of a triangular prism, a quadrangular prism, a hexagonal prism, an octagonal prism or a cylindrical column, and one end of the columnar structure is connected to the bearing shell, and the other end is the opening.

6. The acoustic imager according to claim 5, characterized in that: The arrangement shape of the sound receiving holes of the microphone matches the cross-sectional shape of the windshield.

7. The acoustic imager according to claim 1, characterized in that: A sound absorbing component is arranged on the inner wall of the wind shield.

8. The acoustic imager according to claim 1, characterized in that: It also includes a connecting shaft, which is rotatably connected to the mobile device body to adjust the angle of the acoustic imager.

9. A drone device, characterized in that: It comprises the mobile device body and the acoustic imager as described in any one of claims 1-8.

10. A mobile device, characterized in that: It comprises the mobile device body and the acoustic imager as described in any one of claims 1-8.

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