Octopus bionic retractable portable external sound source identification planar array

Abstract

The utility model discloses an octopus bionic retractable portable external sound source identification planar array, and relates to the technical field of rail train noise source identification. In order to solve the problem that an existing out-of-vehicle sound source recognition array is inconvenient to carry, the following technical scheme is provided: the out-of-vehicle sound source recognition array comprises a central main supporting rod and an auxiliary arm rod hinged to the top end of the central main supporting rod, the central main supporting rod is sleeved with a circular ring sleeve slidably connected to the central main supporting rod, and the top of the circular ring sleeve is provided with a plurality of connecting rods; the other end of each connecting rod is hinged to an auxiliary arm rod, the top of the central main supporting rod is provided with a top cap used for abutting against the tail end of the auxiliary arm rod, and the central main supporting rod, the auxiliary arm rods and the connecting rods form an octopus-shaped structure. The sound source identification device has remarkable beneficial effects in the aspects of sound source identification capability, portability, flexibility, stability, durability, wide application prospect, cost effectiveness and the like.

Description

Technical Field

[0001] This utility model relates to the field of noise source identification technology for rail trains, specifically to an octopus-inspired, retractable, portable planar array for identifying external sound sources. Background Technology

[0002] The external noise source identification array for rail trains is an acoustic measurement system specifically designed to capture and analyze external noise sources generated during rail train operation. This system typically consists of multiple high-precision microphones arranged in a specific geometric layout, forming a multi-channel sound acquisition network. These microphones can simultaneously capture sound signals from different directions, providing a rich data foundation for subsequent sound source localization and identification, and offering strong technical support for research and applications in the field of rail transit noise control.

[0003] There are many forms of external sound source identification arrays for existing rail trains, such as circular arrays, cross arrays, and linear arrays. Among them, circular arrays are the most widely used. The main feature of a circular array is that its microphones are arranged in a circular layout. This layout has certain advantages in acoustic measurements, such as higher spatial resolution at low and mid frequencies, better directional identification, and natural symmetry (which simplifies signal processing).

[0004] However, since external sound source recognition tests are usually conducted along railway lines in harsh environments, and the arrays currently used are mostly bulky and integrally molded, making them inconvenient to store and carry, a lot of preparation work is often required before the test, which brings more manpower costs to the test.

[0005] Patent application number CN 201610137477.3 discloses an umbrella-shaped reconfigurable three-dimensional microphone array. The array structure involved in this solution can achieve the functions of quick storage and easy portability. However, the storage direction of this array is forward, which is inconsistent with the direction of the main pole, so the length after storage is still relatively long. Utility Model Content

[0006] The purpose of this invention is to provide an octopus-inspired, retractable, portable planar array for identifying external vehicle sound sources, in order to solve the problem that existing external vehicle sound source identification arrays are not easy to carry.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] An octopus-inspired retractable portable vehicle exterior sound source recognition planar array includes: a central main support rod and an auxiliary arm hinged to the top of the central main support rod. A circular sleeve slidably connected to the central main support rod is fitted on the central main support rod. The top of the circular sleeve is provided with multiple connecting rods, and the other end of each connecting rod is hinged to an auxiliary arm. The top of the central main support rod is provided with a cap for pressing the end of the auxiliary arm. The central main support rod, the auxiliary arm, and the connecting rods constitute an octopus-shaped structure.

[0009] Preferably, the side end of the annular sleeve is fitted with fastening bolts to fix the position of the annular sleeve on the central main support rod.

[0010] Preferably, each auxiliary arm has a microphone mounting hole evenly spaced.

[0011] Preferably, a microphone is installed in the microphone mounting hole to capture sound signals from different directions.

[0012] Preferably, each microphone mounting hole is fitted with a rubber ring to secure the microphone and reduce vibration and noise.

[0013] Preferably, the microphone is connected to the data acquisition device via a connecting cable.

[0014] This utility model has the following beneficial effects:

[0015] Highly efficient sound source identification capability: This planar array, with its octopus-shaped structural design, increases the sound source capture area and improves the ability to receive sound signals from different directions. Evenly distributed microphone mounting holes on the auxiliary arms allow for flexible microphone placement, achieving omnidirectional coverage and accurate sound source identification. High-sensitivity, low-noise microphone elements, along with advanced signal processing technology, further enhance the accuracy and anti-interference capability of sound source identification.

[0016] Portability and Flexibility: The planar array adopts a retractable and detachable modular design, making the entire device more convenient to carry and transport. The sliding connection between the circular sleeve and the central main support rod, as well as the hinged structure between the auxiliary arms and connecting rods, allow the planar array to be flexibly adjusted according to actual needs, adapting to different usage environments and conditions.

[0017] Stability and Durability: Key components such as the central main support rod and auxiliary arms are made of high-strength, lightweight materials, ensuring the stability and durability of the entire structure. The introduction of cushioning elements such as rubber rings effectively reduces the impact of vibration and noise on sound source identification, improving the stability and reliability of the equipment.

[0018] Broad application prospects: This planar array can be used not only for sound source identification and localization outside vehicles, but also in other applications requiring sound signal capture and analysis, such as environmental monitoring, security surveillance, and smart homes. With continuous technological advancements, this planar array can be combined with other sensors, cameras, and other devices to form a more comprehensive sound source identification system, providing strong support for intelligent and automated development.

[0019] Cost-effectiveness: This solution achieves efficient sound source identification capabilities through reasonable structural design and material selection, while reducing production and maintenance costs. The modular design allows users to selectively purchase and use the modules they need according to their actual requirements, further improving cost-effectiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the octopus-inspired retractable portable vehicle external sound source identification planar array structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the octopus-inspired retractable portable vehicle external sound source recognition planar array in its semi-deployed state.

[0022] Figure 3 This is a schematic diagram of the closed state of the octopus-inspired retractable portable vehicle external sound source recognition planar array of this utility model;

[0023] Figures 1 to 3 The reference numerals in the attached drawings are respectively: central main support rod 1, auxiliary arm rod 2, microphone fixing hole 21, top cap 3, connecting rod 4, circular sleeve 5, and fastening bolt 6. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please refer to Figure 1-3 This specific embodiment provides an octopus-inspired, retractable, portable planar array for identifying external vehicle sound sources. Inspired by the biological structure of an octopus and incorporating clever mechanical design concepts, this planar array aims to provide a device capable of efficiently and accurately identifying external vehicle sound sources. The following is a detailed description of this specific embodiment.

[0026] First, the core structure of this planar array consists of a central main support rod 1 and auxiliary arms 2. The central main support rod 1, as the main body of the entire structure, serves as both support and connection. It is made of high-strength, lightweight materials to ensure structural stability and durability, while reducing the overall weight of the equipment for easy carrying and installation. The top of the central main support rod 1 is designed with a hinge structure for connecting the auxiliary arms 2. This hinge structure allows the auxiliary arms 2 to rotate and swing within a certain range, thereby increasing the flexibility and adaptability of the entire planar array.

[0027] A circular sleeve 5 is fitted onto the central main support rod 1. The circular sleeve 5 is slidably connected to the central main support rod 1, allowing it to move up and down along the axis of the central main support rod 1. This sliding connection not only allows the position of the circular sleeve 5 to be adjusted as needed but also facilitates the contraction and expansion of the entire planar array. When the planar array needs to be contracted, simply slide the circular sleeve 5 downwards to the bottom of the central main support rod 1, while simultaneously moving the auxiliary arm 2 towards the central main support rod 1, achieving compact storage of the entire planar array. When the planar array needs to be expanded, slide the circular sleeve 5 upwards to the appropriate position and secure it with subsequent structures. Then, adjust the angle and position of the auxiliary arm 2 to form the desired octopus-shaped structure.

[0028] The top of the annular sleeve 5 is designed with multiple connecting rods 4. One end of each connecting rod 4 is fixedly connected to the annular sleeve 5, and the other end is hinged to an auxiliary arm 2. Through the hinge action of the connecting rods 4, the auxiliary arms 2 can rotate around the hinge point of the connecting rods 4, thereby further increasing the flexibility and adjustability of the entire planar array. In addition, the number and layout of the connecting rods 4 can be designed according to actual needs to ensure that the auxiliary arms 2 can be evenly and stably distributed around the central main support rod 1.

[0029] To secure the end position of the auxiliary boom 2, a top cap 3 is provided on the top of the central main support rod 1. The shape and size of the top cap 3 match the top of the central main support rod 1, and it is fixed to the top of the central main support rod 1 by threaded connection or other fastening methods. When the auxiliary boom 2 is extended and adjusted to the desired position, the top cap 3 can be tightened and pressed against the end of the auxiliary boom 2, thereby preventing the auxiliary boom 2 from shaking or falling off during use.

[0030] The octopus-shaped structure, comprised of the central main support rod 1, auxiliary arm 2, and connecting rod 4, is one of the main features of this planar array. This structure not only makes the entire planar array more unique and aesthetically pleasing, but more importantly, it provides a larger sound source capture area and a wider sound source recognition range. When a sound source is emitted outside the vehicle, the sound signal can propagate to the planar array from different directions and be captured and converted by the microphone on the auxiliary arm 2.

[0031] To ensure that the annular sleeve 5 can be stably fixed in the required position on the central main support rod 1, a fastening bolt 6 is also installed on the side end of the annular sleeve 5. The fastening bolt 6 is threaded to the annular sleeve 5 and the central main support rod 1. When the fastening bolt 6 is tightened, its head presses against the surface of the central main support rod 1, thereby generating sufficient friction to fix the annular sleeve 5 in the required position. This fastening method is not only simple and easy to implement, but also has high reliability and stability.

[0032] On each auxiliary arm 2, eight microphone mounting holes 21 are evenly distributed. The shape and size of these microphone mounting holes 21 are matched to the microphone installation requirements for mounting and fixing the microphone. By mounting microphones on the microphone mounting holes 21 at different positions, sound signals from different directions can be captured and converted. This design not only improves the sound source identification capability of the entire planar array, but also makes the microphone layout more flexible and reasonable.

[0033] A microphone is installed within the microphone mounting hole 21. These microphones are made of high-sensitivity, low-noise microphone elements, capable of accurately converting sound signals into electrical signals for transmission and processing. The number and layout of the microphones can be designed according to actual needs to ensure that sound signals from all directions can be captured. Simultaneously, the microphones also possess high anti-interference capabilities and environmental adaptability, enabling them to operate normally and extract useful sound information in complex noisy environments.

[0034] To further secure the microphone and reduce the impact of vibration and noise on sound source identification, a rubber ring is embedded in each microphone mounting hole 21. The rubber ring is made of a soft, elastic material and fits tightly between the microphone and the mounting hole 21, thus securing the microphone and reducing vibration. Furthermore, the rubber ring effectively isolates external noise interference, improving the microphone's signal-to-noise ratio and identification accuracy.

[0035] The microphone connects to a data acquisition device via a cable. The data acquisition device can be a computer, a dedicated data acquisition card, or other device capable of receiving and processing sound signals. Once the microphone captures a sound signal, it converts it into an electrical signal and transmits it to the data acquisition device for processing and analysis via the cable. The data acquisition device can filter, amplify, and digitize the received sound signal to extract useful sound information for further processing and analysis.

[0036] In practical use, the entire planar array first needs to be unfolded and adjusted to the desired position. This can be achieved by adjusting the position of the annular sleeve 5 and the angle of the auxiliary arm 2. Then, the microphones are installed in the individual microphone mounting holes 21, ensuring that each microphone is tightly secured within the rubber ring. Next, the data acquisition device is connected to the microphones, and the data acquisition device is started. At this point, the entire planar array can begin to operate and capture sound signals from outside the vehicle.

[0037] To further improve the sound source identification capability and adaptability of the entire planar array, further optimizations and improvements can be made. For example, adjustable joints or connectors can be added to the auxiliary arm 2 to allow for more flexible adjustment of the microphone's position and angle. Furthermore, more advanced signal processing technologies can be employed to enhance the accuracy of sound signal recognition and its anti-interference capabilities.

[0038] Furthermore, for ease of carrying and transportation, the entire planar array can be designed as a detachable and modular structure. This allows users to selectively carry and use the modules they need, further enhancing the portability and flexibility of the entire device.

[0039] In the specific implementation process, the following points should also be noted:

[0040] When selecting materials and manufacturing processes, it is necessary to ensure that the entire planar array has sufficient strength and durability to withstand various complex usage environments and conditions.

[0041] During installation and commissioning, each component and connection point needs to be carefully inspected and tested to ensure its proper functioning and reliability.

[0042] During use, the planar array needs to be maintained and serviced regularly to extend its service life and keep it in good working condition.

[0043] When processing and analyzing sound signals, it is necessary to use appropriate algorithms and models to improve recognition accuracy and anti-interference ability, and to make necessary parameter adjustments and optimizations according to actual needs.

[0044] In summary, the octopus-inspired retractable portable external vehicle sound source recognition planar array provided in this specific embodiment has advantages such as simple structure, convenient operation, and strong sound source recognition capability. It can not only be used for sound source identification and localization outside vehicles, but also has wide applications in other situations requiring the capture and analysis of sound signals. Through continuous technological innovation and improvement, it is believed that this planar array will play an even more important role in the future field of acoustics.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An octopus-inspired, retractable, portable planar array for identifying external vehicle sound sources, characterized in that: include: A central main support rod (1) and an auxiliary arm (2) hinged to the top of the central main support rod (1). A circular sleeve (5) slidably connected to the central main support rod (1) is fitted on the central main support rod (1). The top of the circular sleeve (5) is provided with multiple connecting rods (4). The other end of each connecting rod (4) is hinged to an auxiliary arm (2). The top of the central main support rod (1) is provided with a cap (3) for pressing the end of the auxiliary arm (2). The central main support rod (1), the auxiliary arm (2) and the connecting rods (4) form an octopus-shaped structure.

2. The octopus-inspired retractable portable vehicle exterior sound source recognition planar array according to claim 1, characterized in that, The annular sleeve (5) is fitted with fastening bolts (6) on its side end, which are used to fix the position of the annular sleeve (5) on the central main support rod (1).

3. The octopus-inspired retractable portable external sound source identification planar array according to claim 1, characterized in that, Each of the aforementioned auxiliary arms (2) has eight microphone fixing holes (21) evenly distributed.

4. The octopus-inspired retractable portable vehicle exterior sound source identification planar array according to claim 3, characterized in that, A microphone is provided in the microphone fixing hole (21) for capturing sound signals from different directions.

5. The octopus-inspired retractable portable external sound source identification planar array according to claim 4, characterized in that, Each of the microphone mounting holes (21) is fitted with a rubber ring to secure the microphone and reduce vibration and noise.

6. The octopus-inspired retractable portable vehicle exterior sound source identification planar array according to claim 5, characterized in that, The microphone is connected to the data acquisition device via a connecting cable.

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