System for sound source localization

Abstract

A system for sound source localization comprises a terminal equipment cabinet, the terminal equipment cabinet is connected with an intelligent acquisition box, the intelligent acquisition box is connected with data acquisition equipment, the terminal equipment cabinet provides a power supply for the intelligent acquisition box, and the data acquisition equipment performs noise data acquisition through an air noise sensor. Air noise sensors in the data acquisition equipment form a spatial regular tetrahedron matrix, the spatial regular tetrahedron matrix is transmitted to an intelligent acquisition box through a BNC wire, acquired noise analog quantity data is converted into digital quantity data through the intelligent acquisition box, and the digital quantity data is transmitted to a terminal equipment cabinet through a network cable for analysis; the system can accurately position a sound source of abnormal sound, and is high in acquisition efficiency, strong in analysis function and accurate in sound source positioning function.

Description

Technical Field

[0001] The utility model relates to the technical field of fault monitoring, and particularly relates to a system for sound source localization. Background Art

[0002] With the advancement of equipment monitoring and maintenance in recent years, in a closed industrial site, especially for key mechanical equipment, the on-site hazards are great, and inspection personnel cannot enter the site for inspection during equipment operation and cannot hear abnormal sounds occurring during equipment operation. Therefore, an on-line monitoring device is required to monitor the operation health status of the equipment.

[0003] Currently, there is no mature sound source localization system, and it is impossible to accurately locate abnormal sounds occurring during equipment operation. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a system for sound source localization. The air noise sensors form a spatial regular tetrahedron matrix, which can accurately locate the sound source of abnormal sounds, has high acquisition efficiency, strong analysis functions, and accurate sound source localization functions.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A system for sound source localization includes a terminal equipment cabinet 1. The terminal equipment cabinet 1 is connected to an intelligent acquisition box 2, and the intelligent acquisition box 2 is connected to data acquisition equipment 3. The terminal equipment cabinet 1 provides power for the intelligent acquisition box 2. The data acquisition equipment 3 collects noise data through air noise sensors and transmits it to the intelligent acquisition box 2 through BNC cables. The collected noise analog data is converted into digital data by the intelligent acquisition box 2 and transmitted to the terminal equipment cabinet 1 through network cables for analysis.

[0007] The data acquisition equipment 3 includes a connection block 5. The left and right ends of the connection block 5 are connected to one end of a connection cross bar 6. The other end of the connection cross bar 6 is connected to the upper end of a vertical rod 11 of a sensor mounting plate through a small connection block 10. The lower end of the vertical rod 11 of the sensor mounting plate is connected to a sensor mounting plate 9. The lower end of the connection block 5 is connected to the upper end of a connection vertical rod 7. The lower end of the connection vertical rod 7 is connected to a fixed base 8, and the intelligent acquisition box 2 is connected to the fixed base 8.

[0008] On the described sensor mounting plate 9, a first long sensor mounting rod 12, a second long sensor mounting rod 13, a third long sensor mounting rod 14, and a short sensor mounting rod 15 are respectively connected. Both ends of the first long sensor mounting rod 12, the second long sensor mounting rod 13, the third long sensor mounting rod 14, and the short sensor mounting rod 15 are respectively provided with BNC connectors and are connected internally through data lines. Air noise sensors are respectively connected to the first long sensor mounting rod 12, the second long sensor mounting rod 13, the third long sensor mounting rod 14, and the short sensor mounting rod 15. The first long sensor mounting rod 12, the second long sensor mounting rod 13, and the third long sensor mounting rod 14 form a spatial regular tetrahedron matrix.

[0009] The described intelligent acquisition box 2 includes an acquisition box and three groups of NI acquisition cards connected thereto.

[0010] The described terminal equipment cabinet 1 includes a cabinet body and a computer and a wireless router connected thereto.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] 1. The utility model provides a system for sound source localization, which is fixedly placed in an industrial site. Eight groups of air noise sensors at different positions collect data. The spatial regular tetrahedron matrix of the air noise sensors can achieve the localization of the entire space compared with a planar array, with better isotropy, a smaller blind area range, higher positioning accuracy, a longer positioning distance, and a wider positioning range. Through the formed regular tetrahedron matrix, the spatial noise and structure noise can be collected more accurately and comprehensively. The collected noise is converted into a digital signal by the intelligent acquisition box 2 and directly transmitted to the terminal equipment cabinet 1 for data analysis, so that the operating state of the equipment can be detected more accurately, and the sound source of the abnormal sound fault source can be accurately located.

[0013] 2. Since the utility model adopts sensor mounting rods arranged in a spatial regular tetrahedron matrix, it has the advantages of simple and fast deployment, low overall cost, and more single and accurate monitoring positions.

[0014] 3. Since the utility model adopts a sensor mounting plate with highly concentrated sensors, it has a simple structure, a small size and shape, and occupies a small space, and is particularly suitable for deploying in a closed industrial site. Description of the Drawings

[0015] Figure 1 is the schematic diagram of the embodiment of the utility model.

[0016] Figure 2 is the external view of the data acquisition device 3 of the embodiment of the utility model.

[0017] Figure 3It is the front view of the data acquisition device 3 in the embodiment of the present utility model.

[0018] Figure 4 It is the top view of the data acquisition device 3 in the embodiment of the present utility model. Specific embodiments

[0019] The present utility model will be described in detail below in conjunction with embodiments and drawings.

[0020] As Figure 1 shown, a system for sound source localization includes a terminal equipment cabinet 1. The terminal equipment cabinet 1 is connected to an intelligent acquisition box 2, and the intelligent acquisition box 2 is connected to a data acquisition device 3. The terminal equipment cabinet 1 is installed with abnormal sound monitoring software 4. The terminal equipment cabinet 1 provides power for the intelligent acquisition box 2. The data acquisition device 3 collects noise data through an air noise sensor and transmits it to the intelligent acquisition box 2 through a BNC cable. The collected noise analog data is converted into digital data by the intelligent acquisition box 2 and transmitted to the terminal equipment cabinet 1 through a network cable for analysis by the abnormal sound monitoring software 4.

[0021] As Figure 2 、 Figure 3 、 Figure 4 shown, the data acquisition device 3 includes a connection block 5. The left and right ends of the connection block 5 are fixedly pressed with one end of a connection cross bar 6 by screws. The other end of the connection cross bar 6 is fixedly pressed with the upper end of a small connection block 10 by screws. The lower end of the small connection block 10 is fixedly pressed with the upper end of a sensor mounting plate connecting vertical rod 11 by screws. The lower end of the sensor mounting plate connecting vertical rod 11 is connected and fixed to a sensor mounting plate 9 by screws. There are 4 sensor mounting rod holes on the sensor mounting plate 9, namely the first sensor mounting rod hole 16, the second sensor mounting rod hole 17, the third sensor mounting rod hole 18 on the outside and the fourth sensor mounting rod hole 19 in the middle. The first sensor mounting rod 12, the second sensor mounting rod 13, the third sensor mounting rod 14, and the short sensor mounting rod 15 are respectively installed in the first sensor mounting rod hole 16, the second sensor mounting rod hole 17, the third sensor mounting rod hole 18, and the fourth sensor mounting rod hole 19 and fixed by screws. Both ends of the first long sensor mounting rod 12, the second long sensor mounting rod 13, the third long sensor mounting rod 14, and the short sensor mounting rod 15 are respectively provided with BNC connectors and internally connected by data lines. Air noise sensors are respectively connected to the first long sensor mounting rod 12, the second long sensor mounting rod 13, the third long sensor mounting rod 14, and the short sensor mounting rod 15. The first long sensor mounting rod 12, the second long sensor mounting rod 13, and the third long sensor mounting rod 14 form a spatial regular tetrahedron matrix.

[0022] The lower end of the connecting block 5 is fixedly connected to the upper end of the connecting vertical rod 7 through threads. The connecting vertical rod 7 is connected to the fixed base 8, and an intelligent acquisition box 2 is connected to the fixed base 8.

[0023] The intelligent acquisition box 2 includes an acquisition box and three groups of NI acquisition cards connected thereto.

[0024] The terminal equipment cabinet 1 includes a cabinet body, a computer and a wireless router connected thereto.

[0025] The abnormal sound monitoring software 4 is abnormal sound data acquisition and analysis software.

[0026] The working principle of the present utility model is as follows: Eight air noise sensors are installed on two sensor mounting plates 9. Since the air noise sensors are installed at different positions, a spatial regular tetrahedron matrix is formed, which can realize the positioning of the entire space, has better isotropy, a small blind area range, can obtain higher positioning accuracy, has a longer positioning distance and a wider positioning range; the data collected by the air noise sensors is transmitted to the intelligent acquisition box 2 through BNC cables. The collected noise analog quantity data is converted into digital quantity data through the intelligent acquisition box 2, and the digital quantity data is transmitted to the terminal equipment cabinet 1 through network cables and analyzed by the abnormal sound monitoring software 4.

Claims

1. A system for sound source localization, comprising a terminal equipment cabinet (1), characterized in that: The terminal equipment cabinet (1) is connected to the intelligent acquisition box (2), and the intelligent acquisition box (2) is connected to the data acquisition device (3). The terminal equipment cabinet (1) provides power for the intelligent acquisition box (2). The data acquisition device (3) collects noise data through an air noise sensor and transmits it to the intelligent acquisition box (2) through a BNC cable. The collected analog noise data is converted into digital data by the intelligent acquisition box (2) and transmitted to the terminal equipment cabinet (1) through a network cable for analysis; The data acquisition device (3) includes a connection block (5). The left and right ends of the connection block (5) are connected to one end of a connection cross bar (6). The other end of the connection cross bar (6) is connected to the upper end of a sensor mounting plate connecting vertical rod (11) through a small connection block (10). The lower end of the sensor mounting plate connecting vertical rod (11) is connected to a sensor mounting plate (9). The lower end of the connection block (5) is connected to the upper end of a connection vertical rod (7). The lower end of the connection vertical rod (7) is connected to a fixed base (8), and an intelligent acquisition box (2) is connected to the fixed base (8); The sensor mounting plate (9) is respectively connected with a first long sensor mounting rod (12), a second long sensor mounting rod (13), a third long sensor mounting rod (14), and a short sensor mounting rod (15). The two ends of the first long sensor mounting rod (12), the second long sensor mounting rod (13), the third long sensor mounting rod (14), and the short sensor mounting rod (15) are respectively provided with BNC connectors and are connected internally through data lines. Air noise sensors are respectively connected to the first long sensor mounting rod (12), the second long sensor mounting rod (13), the third long sensor mounting rod (14), and the short sensor mounting rod (15). The first long sensor mounting rod (12), the second long sensor mounting rod (13), and the third long sensor mounting rod (14) form a spatial regular tetrahedron matrix.

2. The system for sound source localization according to claim 1, wherein: The intelligent acquisition box (2) includes an acquisition box and three groups of NI acquisition cards connected thereto.

3. The system for sound source localization according to claim 1, wherein: The terminal equipment cabinet (1) includes a cabinet body and a computer and a wireless router connected thereto.

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