CN218630156U - Long-distance sound source positioning and tracking device - Google Patents
Long-distance sound source positioning and tracking device Download PDFInfo
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- CN218630156U CN218630156U CN202223097163.5U CN202223097163U CN218630156U CN 218630156 U CN218630156 U CN 218630156U CN 202223097163 U CN202223097163 U CN 202223097163U CN 218630156 U CN218630156 U CN 218630156U
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Abstract
The utility model discloses a long distance sound localization tracer relates to sound localization tracking technical field, include: the sound source acquisition module is used for acquiring sound source information and comprises a microphone array consisting of a plurality of microphones, and each microphone is provided with a conical pipe which is sleeved on the microphone; the sound source processing module is connected with the sound source collecting module and used for processing the collected sound source information to obtain a control instruction; the sound source positioning module is connected with the sound source processing module and used for receiving and executing the control command; sound source collection module, sound source processing module and sound localization module set up on the bottom plate, and the microphone equidistant setting in the microphone array sets up in the bottom plate, and the bottom plate is regular geometry, and the distance between every microphone and the bottom plate mid point equals, and every microphone has all faced different directions, has improved sound information's collection intensity, has cut down interference signal simultaneously, has improved the collection precision.
Description
Technical Field
The utility model relates to a sound localization tracking technical field, concretely relates to long distance sound source localization tracking device.
Background
With the continuous development of information processing technology, sound source localization is widely applied to various fields.
At present, a sound source positioning system mainly utilizes a microphone to collect a sound source, and then completes positioning operation of the sound source through a series of voice processing, the sound source is transmitted through a medium, and the problem of multi-path transmission exists, so that sound source information is gradually weakened in the transmission process, the intensity of the sound source collected by the microphone finally is influenced by the distance between the collected sound source and the microphone and the size of the sound source, the intensity of the sound source collected by the microphone is low, and the collected interference signals are more.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that improve the collection intensity and the precision of sound source, aim at provides long distance sound source localization tracer, and the collection intensity of solving the sound source is low, the many problem of interfering signal.
The utility model discloses a following technical scheme realizes:
long distance sound localization tracking device includes:
the system comprises a sound source acquisition module, a sound source processing module and a sound source processing module, wherein the sound source acquisition module is used for acquiring sound source information and comprises a microphone array consisting of a plurality of microphones, each microphone is provided with a conical pipe, and the conical pipes are sleeved on the microphones;
the sound source processing module is connected with the sound source collecting module and used for processing the collected sound source information to obtain a control instruction;
and the sound source positioning module is connected with the sound source processing module and used for receiving and executing the control command.
The conical tube is sleeved on the microphone, sound source information in the direction of the larger tube diameter of the conical tube is collected in a centralized mode, the conical tube wall shields sound sources or noises transmitted from other directions, the sound source information in the collection direction is focused, the problem of diffusivity of sound source transmission is solved, the sound source information entering the conical tube is gathered together and collected by the microphone, the collection intensity of the sound source information is improved, meanwhile, interference signals are reduced, and the collection precision is improved.
Further, above-mentioned sound source collection module, sound source processing module and sound localization module set up on the bottom plate, fix sound source collection module, sound source processing module and sound localization module on the bottom plate and become a whole, when being convenient for take, also avoided split interconnecting link to be dragged the fracture, prolonged this long distance sound source localization tracer's life.
Furthermore, the microphones in the microphone array are arranged on the bottom plate at equal intervals.
The microphones in the microphone array are arranged on a straight line at equal intervals to form a one-dimensional linear array, and the acquisition range of the one-dimensional linear array is a fan-shaped area or a half-empty area, so that the microphone array is not limited by a sound source positioning algorithm, is convenient to realize and has stronger practicability;
alternatively, the microphones in the microphone array are equally spaced in a single plane to form a two-dimensional planar array.
Further, the bottom plate is a regular geometric body, and the distance between each microphone and the midpoint of the bottom plate is equal.
The distance between each microphone in the microphone array and the midpoint of the bottom plate is equal, and a circular two-dimensional plane array is formed.
Further, each of the microphones is oriented in a different direction.
Each microphone collects sound source information in different directions, the collection range is 0-360 degrees, and the defect of the one-dimensional linear array in the collection range is overcome.
Further, the sound source processing module is configured to solve an issuing position of sound source information according to a positioning algorithm of the arrival time difference, and obtain a control instruction according to the issuing position of the sound source information.
The sending position of the sound source information is calculated according to the positioning algorithm of the arrival time difference, so that the calculation amount is small, the calculation efficiency is high, the requirement on hardware performance is low, and the hardware cost is reduced.
Further, the sound source collecting module further comprises a potentiometer, and the potentiometer is connected with the microphone array.
The potentiometer is used for adjusting the sensitivity of the microphone array to sound source information, and is matched with the conical tube, after the sensitivity of the microphone array to the sound source information is increased, the detection distance of the long-distance sound source positioning and tracking device is prolonged, when the sound source information is collected, most of nearby interference signals are separated by the conical tube, the interference signals are reduced, the interference signals in the finally collected sound source information are less, the detection distance of the microphone array is increased by the long-distance sound source positioning and tracking device, and the collection intensity and the collection precision are improved.
Furthermore, the sound source positioning module comprises a holder tracking device, and the holder tracking device is electrically connected with the sound source processing module and used for tracking the sending position of the sound source information after receiving the control command.
The holder tracking device is connected with the sound source processing module, and the tracking of the moving position of the sound source is realized by utilizing the existing sound source positioning algorithm.
Furthermore, the sound source positioning module further comprises a laser, and the laser is fixedly connected with the holder tracking device and used for emitting laser signals.
The cloud platform tracking device tracks the moving position of the sound source, and the laser indicates the position of the sound source, so that the sound source is positioned more intuitively.
Furthermore, the cloud platform tracking device is arranged at the midpoint of the bottom plate, the installation is convenient, the microphone arrays are arranged around the midpoint of the bottom edge, and the cloud platform tracking device is arranged at the midpoint of the bottom plate, so that the cloud platform tracking device is prevented from influencing the transmission of sound source information as an obstacle and influencing the acquisition result of the microphone arrays.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the conical tube is sleeved on the microphone, sound source information in the direction of the larger tube diameter of the conical tube is collected in a centralized mode, the conical tube wall blocks sound sources or noises transmitted from other directions, the sound source information in the collection direction is focused, the problem of sound source propagation diffusivity is solved, the sound source information entering the conical tube is gathered together and collected by the microphone, the collection intensity of the sound source information is improved, meanwhile, interference signals are reduced, and the collection precision is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a block diagram of the structure;
FIG. 2 is a schematic structural diagram of a one-dimensional linear array;
fig. 3 is a schematic structural diagram of a two-dimensional planar array.
Reference numbers and corresponding part names in the drawings:
the method comprises the following steps of 1-sound source collecting module, 11-microphone array, 12-conical tube, 13-potentiometer, 2-sound source processing module, 3-sound source positioning module, 31-holder tracking device, 32-laser and 4-bottom plate.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
This embodiment 1 provides a long-distance sound source localization tracking apparatus, as shown in fig. 1, including:
the system comprises a sound source acquisition module 1, a sound source processing module and a sound source processing module, wherein the sound source acquisition module 1 is used for acquiring sound source information, the sound source acquisition module 1 comprises a microphone array 11 consisting of a plurality of microphones, each microphone is provided with a conical tube 12, and the conical tube 12 is sleeved on the microphone;
the sound source processing module 2 is connected with the sound source collecting module 1 and is used for processing the collected sound source information to obtain a control instruction;
and the sound source positioning module 3 is connected with the sound source processing module 2 and is used for receiving and executing the control command.
The conical tube 12 is sleeved on the microphone, sound source information in the direction of the larger pipe diameter of the conical tube 12 is collected in a centralized mode, sound sources or noises transmitted from other directions are shielded by the wall of the conical tube 12, the sound source information in the collecting direction is focused, the problem of diffusivity of sound source transmission is solved, the sound source information entering the conical tube 12 is gathered together and collected by the microphone, the collecting intensity of the sound source information is improved, meanwhile, interference signals are reduced, and the collecting precision is improved.
Specific embodiment, above-mentioned sound source collection module 1, sound source processing module 2 and sound source orientation module 3 set up on bottom plate 4, fix sound source collection module 1, sound source processing module 2 and sound source orientation module 3 and become a whole on bottom plate 4, when being convenient for take, also avoided split type interconnecting link to be dragged the fracture, prolonged this long distance sound source localization tracking device's life.
In a specific embodiment, as shown in fig. 2, the microphones of the microphone array 11 are arranged on the bottom plate 4 at equal intervals in a straight line.
The microphones in the microphone array 11 are arranged on a straight line at equal intervals to form a one-dimensional linear array, and the acquisition range of the one-dimensional linear array is a sector area or a half-empty area, so that the method is not limited by a sound source positioning algorithm, is convenient to implement, and has strong practicability.
In a specific embodiment, the sound source collecting module 1, the sound source processing module 2, and the sound source positioning module 3 are connected to a power supply.
Example 2
As shown in fig. 3, the bottom plate 4 is circular, each of the microphones is equidistant from the midpoint of the bottom plate 4, the microphones are equidistant from each other, and each of the microphones is oriented in a different direction.
The distance between each microphone in the microphone array 11 and the midpoint of the bottom plate 4 is equal, and the microphones in the microphone array 11 are arranged on the bottom plate 4 at equal intervals to form a circular two-dimensional plane array;
each microphone collects sound source information in different directions, the collection range is 0-360 degrees, and the defect of the one-dimensional linear array in the collection range is overcome.
In a specific embodiment, the sound source processing module 2 processes collected sound source information by using an STM32 single chip microcomputer, and is configured to estimate a time delay difference of a received signal of each microphone according to a difference in arrival time of the sound source information at each microphone in the microphone array 11 by using a time difference of arrival positioning algorithm (TDOA positioning algorithm) in the prior art, and then construct a positioning algorithm based on time delay and in combination with a geometric relationship of the microphone array 11, so as to solve a position where the sound source information is sent out in a space, and obtain a control instruction according to the position where the sound source information is sent out.
In addition, the existing positioning algorithm further includes:
the positioning algorithm of arrival time (TOA positioning algorithm) is to position the position of a sound source by receiving the arrival time of sound source information, usually a circumferential model is adopted, time synchronization is a precondition of the TOA positioning algorithm, and the requirement on a hardware system is high;
the positioning algorithm of beam forming is to filter and denoise each path of output signals of a microphone, then form a beam by weighted summation, adjust a weight value to enable the output power of the beam to reach a maximum value, scan the whole space, and obtain the direction of the energy maximum value as the direction of a sound source.
In conclusion, the sending position of the sound source information is calculated by adopting the positioning algorithm of the time difference of arrival, so that the calculation amount is small, the calculation efficiency is high, the requirement on the hardware performance is low, and the hardware cost is reduced.
Example 3
The sound source collecting module 1 further includes a potentiometer 13, and the potentiometer 13 is connected to the microphone array 11.
The potentiometer 13 is used for adjusting the sensitivity of the microphone array 11 to sound source information, and is matched with the conical tube 12, after the sensitivity of the microphone array 11 to the sound source information is increased, the detection distance of the long-distance sound source positioning and tracking device is increased, when the sound source information is collected, most of nearby interference signals are separated by the conical tube 12, interference signals are reduced, interference signals in the finally collected sound source information are less, the detection distance of the microphone array 11 is increased by the long-distance sound source positioning and tracking device, and the collection intensity and the collection precision are improved.
In a specific embodiment, the sound source collecting module 1 employs a high-sensitivity microphone sensor module, for example, KY-037, a DO port of the module may output a high level and a low level according to whether the sound source intensity reaches a certain threshold, and the threshold sensitivity may be adjusted according to the potentiometer 13, by adjusting the potentiometer 13, the collecting sensitivity of the microphone array 11 is increased, the collecting distance of the microphone array 11 is extended, the microphone is sleeved with the tapered tube 12, which not only enhances the collecting intensity of the microphone, but also reduces the interference of noise, and the potentiometer 13 is used in cooperation with the tapered tube 12, so that the microphone can collect a sound source at a longer distance.
Example 4
The sound source positioning module 3 includes a pan/tilt tracking device 31, and the pan/tilt tracking device 31 is electrically connected to the sound source processing module 2, and is configured to track an emission position of sound source information after receiving the control instruction.
The pan/tilt/zoom tracking device 31 is connected to the sound source processing module 2, and tracks the moving position of the sound source by using the existing sound source positioning algorithm.
In a specific embodiment, the sound source positioning module 3 further includes a laser 32, the laser 32 is fixedly connected to the pan/tilt tracking device 31, and the laser 32 is connected to a power source for emitting a laser signal.
The holder tracking device 31 tracks the moving position of the sound source, and the laser 32 indicates the position of the sound source, so that the sound source is positioned more intuitively.
In a specific embodiment, the pan/tilt/zoom tracking device 31 is disposed at the midpoint of the bottom plate 4, so that the installation is convenient, the microphone array 11 is disposed around the midpoint of the bottom edge, and the pan/tilt tracking device 31 is disposed at the midpoint of the bottom plate 4, thereby preventing the pan/tilt tracking device 31 from acting as a barrier to affect the propagation of sound source information and the acquisition result of the microphone array 11.
In a specific embodiment, the sound source localization module 3 may use an existing pan/tilt tracking controller, such as SW-MIS8230TC-HLA, to interact with information of the communication terminal.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. Long distance sound source localization tracking device, its characterized in that includes:
the system comprises a sound source acquisition module (1) and a sound source processing module, wherein the sound source acquisition module (1) is used for acquiring sound source information, the sound source acquisition module (1) comprises a microphone array (11) consisting of a plurality of microphones, each microphone is provided with a conical pipe (12), and the conical pipe (12) is sleeved on the microphone;
the sound source processing module (2) is connected with the sound source collecting module (1) and is used for processing the collected sound source information to obtain a control instruction;
and the sound source positioning module (3) is connected with the sound source processing module (2) and is used for receiving and executing the control instruction.
2. The long-distance sound source localization and tracking device according to claim 1, wherein the sound source collection module (1), the sound source processing module (2) and the sound source localization module (3) are disposed on the base plate (4).
3. The long-distance sound source localization tracking device according to claim 2, characterized in that the microphones of the microphone array (11) are equally spaced on the base plate (4).
4. A long-distance sound source localization tracking device according to claim 3, characterized in that the base plate (4) is a regular geometric body, and the distance between each microphone and the midpoint of the base plate (4) is equal.
5. The long distance sound source localization tracking device of claim 4, wherein each of the microphones is oriented in a different direction.
6. The device for locating and tracking a long-distance sound source according to claim 1, wherein the sound source processing module (2) is configured to solve a position of the sound source information according to a locating algorithm of a time difference of arrival, and obtain the control command according to the position of the sound source information.
7. The long distance sound source localization tracking device according to claim 1, characterized in that the sound source acquisition module (1) further comprises a potentiometer (13), the potentiometer (13) being electrically connected to the microphone array (11).
8. The long-distance sound source positioning and tracking device according to claim 1, wherein the sound source positioning module (3) comprises a pan-tilt tracking device (31), and the pan-tilt tracking device (31) is electrically connected to the sound source processing module (2) and configured to track an emission position of the sound source information after receiving the control instruction.
9. The long-distance sound source localization tracking device according to claim 8, characterized in that the sound source localization module (3) further comprises a laser (32), the laser (32) being fixedly connected to the pan-tilt tracking device (31) for emitting a laser signal.
10. The long distance sound source localization tracking device according to claim 8, characterized in that the pan-tilt tracking device (31) is disposed at the midpoint of the base plate (4).
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| CN202223097163.5U CN218630156U (en) | 2022-11-22 | 2022-11-22 | Long-distance sound source positioning and tracking device |
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| CN202223097163.5U CN218630156U (en) | 2022-11-22 | 2022-11-22 | Long-distance sound source positioning and tracking device |
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Inventor after: Huang Xiande Inventor after: Pan Shaohong Inventor after: Jiang Wanqing Inventor after: Chen Wenjie Inventor after: Wang Chuanjiang Inventor before: Huang Xiande Inventor before: Pan Shaohong Inventor before: Jiang Wanqing Inventor before: Chen Wenjie Inventor before: Wang Chuanjiang |