A portable acoustic imager with flexible probe assembly and anti-interference

Abstract

The utility model provides a portable acoustic imager of flexible replacement probe subassembly and anti -interference, including acoustic imager main part, microphone probe subassembly and sound shield cover subassembly, acoustic imager main part is by acoustic imager display screen and acoustic imager casing combination constitutes, acoustic imager display screen is embedded in acoustic imager casing back inboard, acoustic imager casing front end interface place edge fixed with acoustic imager main part outer edge, this design has solved the existing known portable acoustic imager in each component integral type constitutes, inconvenient split, replacement needs integral mold opening, cost is higher, and the problem of poor sound shield cover shielding effect in portable acoustic imager, the utility model discloses can be aimed at different test scene, according to the need quick replacement different sound wave probe subassembly, reduce manufacturing cost, satisfy the demand of the replacement probe because of test scene, improve acoustic imager use flexibility and detection efficiency, can also improve the effective isolation ambient noise interference, improve detection precision.

Description

Technical Field

[0001] This utility model is a portable audio-visual device with flexible and interchangeable probe components and anti-interference capabilities, belonging to the field of audio-visual device technology. Background Technology

[0002] As a visual sound source localization product, the acoustic imager collects noise from a sound source through a microphone probe, locates the sound source in a spatial coordinate system, and forms a sound source light spot. At the same time, a visible light camera is used to superimpose the visible light onto the sound source light spot, effectively showing the spatial distribution of the sound source. This allows for the visualization of the sound source, enabling rapid capture and localization. Currently, the acoustic imager is a common form of sound source localization equipment, mainly used for sound fault localization, partial discharge detection of power equipment, and detection of common gas leaks, among other applications, and it has shown good results in these scenarios.

[0003] However, existing portable audio-visual cameras also have some well-known problems: 1. In certain testing environments, the high level of ambient noise can significantly interfere with the imaging effect during the testing process. This is usually addressed by placing a soundproof enclosure in front of the microphone. While this enclosure attenuates ambient noise to some extent, reflections and standing waves occur on the walls of the soundproof cavity when the sound waves needing to be captured and located reach the microphone probe. Therefore, for better shielding, the soundproof enclosure needs optimization. 2. The positioning effect and sensitivity of an audio-visual camera are related to the distribution and number of microphones in the microphone array. Currently, the display controls, control circuits, and microphone probes of most portable audio-visual cameras are integrated. If a new microphone array is needed, the entire device needs to be remolded, significantly increasing manufacturing costs. There is an urgent need for a portable audio-visual camera with flexible probe component replacement and interference resistance to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a portable audio-visual instrument with flexible and interference-resistant probe components, thereby solving the problems mentioned in the background art. This invention adopts a portable audio-visual instrument structure with replaceable probe modules and interference resistance, so that different types of probes can be equipped on the same main body, and the interference of surface reflection and standing waves inside the soundproof enclosure is reduced.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a portable audio-visual device with flexible replaceable probe components and anti-interference features, comprising an audio-visual device body, a microphone probe assembly, and a soundproof enclosure assembly. The audio-visual device body is composed of an audio-visual device display screen and an audio-visual device housing. The audio-visual device display screen is embedded in the inner side of the back of the audio-visual device housing. The outer edge of the audio-visual device body is fixed at the edge of the front interface of the audio-visual device housing. Multiple positioning holes are opened on the inner side of the outer edge of the audio-visual device body. The microphone probe assembly has a built-in camera and multiple microphone sensors. The camera is located in the middle of the multiple microphone sensors. A microphone probe assembly flange is integrally provided at the rear end of the microphone probe assembly. Contact points are provided on the left and right sides of the inner side of the microphone probe assembly flange. A microphone probe threaded groove is opened on the inner edge of the front end of the microphone probe assembly. A probe assembly threaded head is provided on the rear side of the outer side of the soundproof enclosure assembly. The soundproof enclosure assembly is composed of an inner layer and an outer layer.

[0006] Furthermore, the housing of the audio-visual device has a built-in control circuit and battery assembly. The inner side of the outer edge of the main body of the audio-visual device is provided with contacts on both the left and right sides. The two contacts are electrically connected to the two contact parts respectively. The control circuit is connected to the two contacts through wires. The conductive ends of the camera and multiple microphone sensors are connected to the contact parts of the two contacts through soldering.

[0007] Furthermore, the inner edge of the flange of the microphone probe assembly is provided with multiple positioning protrusions, and the multiple positioning protrusions are respectively engaged in multiple positioning holes, and the flange of the microphone probe assembly is engaged with the outer edge of the main body of the audio-visual device.

[0008] Furthermore, the threaded head of the probe assembly is screwed into the threaded groove of the microphone probe.

[0009] Furthermore, threaded plugs are installed at the front ends of the inner and outer layers of the soundproof enclosure assembly, and a soundproof cavity is formed between the inner and outer layers of the soundproof enclosure assembly and the threaded plugs. The soundproof cavity contains sound-absorbing material. The camera and multiple microphone sensors are located inside the inner layer of the soundproof enclosure assembly, and the multiple microphone sensors constitute a microphone array.

[0010] Furthermore, the inner surface of the inner layer of the soundproof cover assembly has multiple micro-perforations.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a portable audio-visual instrument with flexible and interference-resistant probe assembly replacement. Because it incorporates an audio-visual instrument display screen, probe assembly threaded head, threaded plug, audio-visual instrument housing, contact point, micro-perforations, camera, microphone sensor, outer layer of the soundproof enclosure assembly, soundproof cavity, inner layer of the soundproof enclosure assembly, outer edge of the audio-visual instrument body, flange of the microphone probe assembly, threaded groove of the microphone probe, and contacts, its structure is reasonable. It allows for quick replacement of different acoustic probe assemblies as needed for different testing scenarios, reducing manufacturing costs and meeting the need for probe replacement based on testing scenarios. This improves the flexibility and testing efficiency of the audio-visual instrument. Furthermore, in addition to isolating some ambient noise interference through the outer layer of the soundproof enclosure assembly, sound-absorbing material can be placed in the soundproof cavity formed by the inner and outer layers of the soundproof enclosure assembly. Micro-perforations are set in the inner layer, which on the one hand improves the isolation of ambient noise interference by the soundproof enclosure assembly, and on the other hand reduces the reflection and standing wave effects of sound waves in the probe area of ​​the soundproof enclosure, improving testing accuracy and making it highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a portable audio-visual device that allows for flexible replacement of probe components and is resistant to interference, according to this utility model. Figure 2 This is an exploded structural diagram of a portable audio-visual device with flexible and interference-resistant probe assembly according to the present invention. Figure 3 This is a schematic diagram of the camera position structure of a portable audio-visual device with flexible and replaceable probe components and anti-interference capabilities according to the present invention. Figure 4 This is a schematic diagram of the soundproof enclosure assembly of a portable audio-visual device that allows for flexible probe replacement and is interference-resistant, according to the present invention. Figure 5 This is a schematic diagram of the disassembled structure of the outer edge of the main body of the portable audio-visual device and the flange of the microphone probe assembly, which is a portable audio-visual device with flexible and interference-resistant probe assembly according to this utility model.

[0013] In the diagram: 101-Video camera body, 102-Microphone probe assembly, 103-Soundproof enclosure assembly, 201-Video camera display screen, 202-Probe assembly threaded head, 203-Threaded plug, 204-Video camera housing, 205-Contact point, 301-Micro-perforation, 302-Camera, 303-Microphone sensor, 401-Outer layer of soundproof enclosure assembly, 402-Soundproof cavity, 403-Inner layer of soundproof enclosure assembly, 501-Positioning hole, 502-Outer edge of video camera body, 503-Flange of microphone probe assembly, 504-Microphone probe threaded groove, 505-Contact point. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Please see Figures 1-5 This utility model provides a technical solution: a portable audio-visual device with flexible replaceable probe components and anti-interference capabilities, comprising an audio-visual device body 101, a microphone probe assembly 102, and a soundproof enclosure assembly 103. The audio-visual device body 101 is composed of an audio-visual device display screen 201 and an audio-visual device housing 204. The audio-visual device display screen 201 is embedded in the inner side of the back of the audio-visual device housing 204. The outer edge 502 of the audio-visual device body is fixed at the edge of the front interface of the audio-visual device housing 204. Multiple positioning holes 501 are opened on the inner side of the outer edge 502 of the audio-visual device body. The microphone probe assembly 102 has a built-in camera 302 and multiple microphone sensors 303. The camera 302 is located at the multiple microphones. At the center of sensor 303, a microphone probe assembly flange 503 is integrally provided at the rear end of microphone probe assembly 102. Contact points 205 are provided on the left and right sides of the inner side of microphone probe assembly flange 503. A microphone probe threaded groove 504 is provided on the inner edge of the front end of microphone probe assembly 102. A probe assembly threaded head 202 is provided on the rear side of the outer side of soundproof cover assembly 103. Soundproof cover assembly 103 is composed of inner layer 403 and outer layer 401 of soundproof cover assembly. This design solves the problems of existing portable audio-visual equipment where all components are integrally constructed, which is inconvenient to disassemble, requires overall molding for replacement, has high cost, and has poor soundproofing effect.

[0016] As the first embodiment of this utility model: the audio-visual device housing 204 has a built-in control circuit and battery assembly. The outer edge 502 of the audio-visual device body is provided with contacts 505 on both the left and right sides. The two contacts 505 are electrically connected to the two contact parts 205 respectively. The control circuit is connected to the two contacts 505 through wires. The conductive ends of the camera 302 and multiple microphone sensors 303 are connected to the two contact parts 205 through soldering. By adding two contacts 505 to electrically connect to the two contact parts 205 respectively, it is convenient for the control circuit and battery assembly to supply power and control the camera 302 and multiple microphone sensors 303.

[0017] The microphone probe assembly flange 503 has multiple positioning protrusions on its inner edge, and these protrusions are respectively engaged in multiple positioning holes 501. The microphone probe assembly flange 503 is engaged in the outer edge 502 of the audio-visual unit body. The addition of multiple positioning protrusions that engage in the multiple positioning holes 501 facilitates the quick installation of the microphone probe assembly 102 on the front side of the audio-visual unit body 101. The probe assembly threaded head 202 is screwed into the microphone probe threaded groove 504, facilitating the quick installation of the soundproof cover assembly 103 at the front end of the microphone probe assembly 102.

[0018] Threaded plugs 203 are installed at the front ends of the inner layer 403 and the outer layer 401 of the soundproof enclosure assembly. The gap between the inner layer 403, the outer layer 401 and the threaded plugs 203 forms a soundproof cavity 402. Sound-absorbing material is built into the soundproof cavity 402. The camera 302 and multiple microphone sensors 303 are located inside the inner layer 403 of the soundproof enclosure assembly. The multiple microphone sensors 303 form a microphone array. Multiple micro-perforations 301 are opened on the inner surface of the inner layer 403 of the soundproof enclosure assembly. When sound waves are on the peripheral wall surface of the inner layer 403 of the soundproof enclosure assembly, they will reach the sound-absorbing material arranged in the soundproof cavity 402 through the micro-perforations 301. The design of the sound-absorbing material and the micro-perforations 301 can effectively reduce the reflection of sound waves on the peripheral wall surface of the soundproof cavity, thereby reducing the standing wave effect and enabling the sound waves to be detected to be effectively transmitted to the microphone sensors 303.

[0019] As a second embodiment of this utility model: the outer layer 401 of the soundproof enclosure assembly and the sound insulation material can effectively attenuate the ambient noise around the microphone probe assembly 102 and prevent interference noise outside the viewing angle of the audio-visual instrument from being transmitted to the microphone sensor 303 probe of the microphone probe assembly 102; and during the detection process, when the sound waves in the viewing angle range of the microphone probe assembly 102 are transmitted to the soundproof enclosure assembly 103, the sound waves will reach the sound-absorbing material arranged in the soundproof cavity 402 through the micro-perforations 301 on the peripheral wall surface of the inner layer 403 of the soundproof enclosure assembly. The design of the sound-absorbing material and the micro-perforations 301 can effectively reduce the reflection of the sound waves on the peripheral wall surface of the soundproof cavity 402, thereby reducing the standing wave effect, so that the sound waves to be detected can be effectively transmitted to the microphone sensor 303; Furthermore, the soundproof enclosure assembly 103 is horn-shaped, which can effectively concentrate the sound wave signal to be collected onto the array of microphone sensors 303. By suppressing the environmental noise outside the outer layer 401 of the soundproof enclosure assembly and the reflected sound waves in the inner layer 403 area of ​​the soundproof enclosure assembly, the sound wave energy to be detected is focused, thereby improving the detection accuracy of the audio-visual instrument. Multiple positioning protrusions are respectively inserted into multiple positioning holes 501, and the microphone probe assembly flange 503 is engaged in the outer edge 502 of the audio-visual instrument body, which facilitates the quick installation of the microphone probe assembly 102 on the front side of the audio-visual instrument body 101. The probe assembly threaded head 202 is screwed into the microphone probe threaded groove 504, which facilitates the quick installation of the soundproof enclosure assembly 103 on the front end of the microphone probe assembly 102.

[0020] In addition, in this utility model: the arrangement of the microphone array on the probe module can be designed as needed and is not limited to the distribution pattern shown in the attached drawings; the detachable method between the main body 101 of the audio-visual device and the microphone probe assembly 102 is not limited to snap-fit; the connection method between the soundproof cover assembly 103 and the microphone probe assembly 102 is not limited to threaded connection, but can also be a snap-fit ​​connection, etc. These are other methods that are easy for those skilled in the art to think of; the soundproof cover is not limited to a cylindrical horn shape, and those skilled in the art can choose the required shape as needed; the micro-perforations inside the soundproof cover are not limited to circular holes; and the sound-absorbing material set in the outer shielding cavity and the micro-perforation 301 plate can be common acoustic materials in the industry to reduce the reflection and standing waves of sound waves around the soundproof cavity.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable audio-visual device with flexible replaceable probe assembly and interference resistance, comprising an audio-visual device body (101), a microphone probe assembly (102), and a soundproof enclosure assembly (103), characterized in that: The main body (101) of the audio-visual device is composed of an audio-visual device display screen (201) and an audio-visual device housing (204). The audio-visual device display screen (201) is embedded in the inner side of the back of the audio-visual device housing (204). The outer edge (502) of the main body of the audio-visual device is fixed at the edge of the front interface of the audio-visual device housing (204). Multiple positioning holes (501) are opened on the inner side of the outer edge (502) of the main body of the audio-visual device. The microphone probe assembly (102) has a built-in camera (302) and multiple microphone sensors (303). The camera (302) is located at the position of multiple microphone sensors. At the middle position of the sensor (303), the microphone probe assembly (102) is integrally provided with a microphone probe assembly flange (503) at the rear end. The microphone probe assembly flange (503) is provided with contact points (205) on both the left and right sides of the inner side. The microphone probe assembly (102) is provided with a microphone probe thread groove (504) on the inner edge of the front end. The soundproof cover assembly (103) is provided with a probe assembly thread head (202) on the rear side of the outside. The soundproof cover assembly (103) is composed of a soundproof cover assembly inner layer (403) and a soundproof cover assembly outer layer (401).

2. The portable audio-visual recorder with flexible probe assembly replacement and anti-interference capability according to claim 1, characterized in that: The housing (204) of the audio-visual device has a built-in control circuit and battery assembly. The outer edge (502) of the main body of the audio-visual device is provided with contacts (505) on the left and right sides. The two contacts (505) are electrically connected to the two contact parts (205) respectively. The control circuit is connected to the two contacts (505) through wires. The conductive ends of the camera (302) and multiple microphone sensors (303) are connected to the two contact parts (205) through soldering.

3. The portable audio-visual device with flexible replaceable probe assembly and anti-interference capability according to claim 1, characterized in that: The inner edge of the microphone probe assembly flange (503) is provided with multiple positioning protrusions, and the multiple positioning protrusions are respectively inserted into multiple positioning holes (501). The microphone probe assembly flange (503) is engaged in the outer edge (502) of the audio-visual device body.

4. The portable audio-visual recorder with flexible replaceable probe assembly and anti-interference capability according to claim 1, characterized in that: The probe assembly threaded head (202) is screwed into the microphone probe threaded groove (504) by the thread.

5. A portable audio-visual instrument with flexible replaceable probe assembly and anti-interference capability according to claim 1, characterized in that: The inner layer (403) of the soundproof enclosure assembly and the front end of the outer layer (401) of the soundproof enclosure assembly are fitted with threaded plugs (203), and the gap between the inner layer (403), the outer layer (401) of the soundproof enclosure assembly and the threaded plugs (203) forms a soundproof cavity (402). The soundproof cavity (402) is filled with sound-absorbing material. The camera (302) and multiple microphone sensors (303) are all located inside the inner layer (403) of the soundproof enclosure assembly, and the multiple microphone sensors (303) constitute a microphone array.

6. A portable audio-visual instrument with flexible replaceable probe assembly and anti-interference capability according to claim 1, characterized in that: The inner surface of the inner layer (403) of the soundproof cover assembly has multiple micro-perforations (301).

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