A reciprocity positioning and orientation system based on three-microphone array and its operation method

Abstract

The present invention discloses a reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof, wherein the adjustment mechanism comprises a connecting column, a slot is provided through the front of the connecting column, the slot is rotationally connected to a fixed column, a rotating mechanism is provided between the connecting column and the fixed column, and a connecting arm is fixedly connected to the outer surface of the connecting column, and the present invention relates to the field of microphone array technology. The reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof, through the coordinated use of the connecting column, the slot, the rotating mechanism, the connecting arm, the moving slot, the supporting arm, the moving mechanism and the mounting seat, the moving microphone replaces the movement of the experimenter, reduces the physical exertion of the experimenter, and improves convenience, and solves the problem that the existing three-microphone array device needs the experimenter to move to change the position of the experimenter and the microphone during operation, which is not convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of microphone arrays, and in particular to a reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof. Background Art

[0002] Microphone array, literally, refers to the arrangement of microphones. In other words, it is a system composed of a certain number of acoustic sensors (usually microphones) used to sample and process the spatial characteristics of the sound field. In the frequency response, the direction of the sound source of the received voice signal and its changes can also be analyzed based on the application of beamforming and spatial filters in the time domain. These analyses can be displayed in the form of beams by polar coordinates to show the intensity and angle of the voice signal. The microphone array system is a system composed of a certain number of microphones arranged in a certain topological structure, which processes the spatial sound signals received from different directions in real time.

[0003] As a kind of wave, sound with a frequency between 20Hz and 20kHz can be recognized by the human ear. Therefore, the target sound source can be located by receiving the sound source signal and introducing an algorithm. The microphone array has functions such as noise elimination and target tracking, and can also be used to passively receive sound signals. When operating the existing three-microphone array device, the experimenter needs to move to change the position of himself and the microphone, which is not convenient to use. Therefore, the present invention proposes a reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof to solve the above-mentioned problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof, which solves the problem that the existing three-microphone array device requires the experimenter to move to change the position of himself and the microphone during operation, which makes it inconvenient to use.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a reciprocity positioning and orientation system based on a three-microphone array, comprising a base plate, a fixed column is fixedly connected to the front side of the base plate, a support platform is fixedly connected to the front end of the fixed column, a placement groove is provided on the back side of the fixed column, a rotation groove is provided on the outer surface of the fixed column, the rotation groove is connected to the placement groove, and an adjustment mechanism is provided on the fixed column.

[0006] The adjusting mechanism comprises a connecting column, a card slot is provided through the front face of the connecting column, the card slot is rotatably connected to the fixed column, a rotating mechanism is arranged between the connecting column and the fixed column, a connecting arm is fixedly connected to the outer surface of the connecting column, a movable slot is provided on the front face of the connecting arm, a support arm is slidably connected to the inside of the movable slot, a moving mechanism is arranged between the support arm and the connecting arm, a mounting seat is fixedly connected to the front end of the support arm, the rotating mechanism comprises a first filter plate and a receiving plate, a rotating motor is fixedly connected to the front face of the first filter plate, a connecting rod is fixedly connected to the output end of the rotating motor, the receiving plate is fixedly connected to the card slot, a connecting plate is fixedly connected to the receiving plate, a slot is provided through the front face of the connecting plate, the connecting rod is inserted in the slot, and the outer surface of the receiving plate is adapted to the inside of the rotating slot.

[0007] Preferably, the moving mechanism includes a moving motor, which is fixedly connected to the end of the connecting arm, and the output end of the moving motor is fixedly connected to a screw rod, one end of the screw rod passes through the connecting arm and extends into the moving groove, and the outer surface of the screw rod is connected to the internal thread of the support arm.

[0008] Preferably, a mounting groove is provided on the front side of the mounting seat, a first bolt is threadedly connected to one side of the outer surface of the mounting seat, and a second bolt is threadedly connected to the other side of the outer surface of the mounting seat.

[0009] Preferably, a heat dissipation port is provided through the front side of the bottom plate, a second filter plate is fixedly connected to the slot of the placement slot, and the diameter of the heat dissipation port is smaller than the diameter of the placement slot.

[0010] Preferably, a support rod is fixedly connected to the back side of the connecting arm, a first groove is formed on the back side of the support rod, and a universal wheel assembly is fixedly connected inside the first groove.

[0011] Preferably, a support column is fixedly connected to the back side of the bottom plate, a second groove is formed on the back side of the support column, and a support pad is fixedly connected inside the second groove.

[0012] Preferably, one end of the screw rod is rotatably connected to the inside of the movable groove, and the size of the support platform is smaller than that of the base plate.

[0013] Preferably, the universal wheel assembly and the base plate are on the same plane, and a plurality of support columns are provided.

[0014] The present invention also discloses an operation method of a reciprocity positioning and orientation system based on a three-microphone array, which specifically comprises the following steps:

[0015] S1. First, the moving motor and the rotating motor are connected to the external power supply respectively, and then the microphone is placed in the mounting slot, and the microphone is fixed by the first bolt and the second bolt by rotating the first bolt and the second bolt respectively, so as to facilitate the fixing of the microphone and realize quick disassembly and assembly. Then, the experimenter stands on the supporting platform;

[0016] S2. Then, when conducting the experiment, the moving motor is turned on, and the moving motor drives the screw rod to rotate, and under the limiting effect of the moving slot, the supporting arm is driven to move in the moving slot, thereby driving the microphone to move, so as to achieve the change of the distance between the experimenter and the microphone;

[0017] S3. Then, turn on the rotating motor, so that the rotating motor drives the connecting rod to rotate, and then drives the receiving plate to move in the rotating groove through the connecting plate, so that the connecting column rotates along the outer surface of the fixed column, so as to place the microphone in different directions around the experimenter. Therefore, the mobile microphone replaces the movement of the experimenter, reducing the physical consumption of the experimenter to improve convenience, and solving the problem that the existing three-microphone array device needs the experimenter to move to change the position of himself and the microphone during operation, which is not convenient to use.

[0018] S4. Finally, through the above operation steps, and recording the receiving conditions of the microphones at different positions, the positioning conditions of the three-microphone array are analyzed through experimental analysis.

[0019] Preferably, the mobile motor in S2 and the rotating motor in S3 are both three-phase asynchronous motors.

[0020] Beneficial Effects

[0021] The present invention provides a reciprocity positioning and orientation system based on a three-microphone array and an operation method thereof. Compared with the prior art, it has the following beneficial effects:

[0022] (1) The reciprocity positioning and orientation system based on the three-microphone array and its operation method are as follows: the adjustment mechanism includes a connecting column, a card slot is formed on the front of the connecting column, the card slot is rotatably connected to the fixed column, a rotating mechanism is arranged between the connecting column and the fixed column, a connecting arm is fixedly connected to the outer surface of the connecting column, a moving slot is formed on the front of the connecting arm, a supporting arm is slidably connected inside the moving slot, a moving mechanism is arranged between the supporting arm and the connecting arm, a mounting seat is fixedly connected to the front end of the supporting arm, the rotating mechanism includes a first filter plate and a receiving plate, a rotating motor is fixedly connected to the front of the first filter plate, and the output of the rotating motor The end is fixedly connected with a connecting rod, the receiving plate is fixedly connected in the slot, the receiving plate is fixedly connected with a connecting plate, the front side of the connecting plate is penetrated with a slot, the connecting rod is inserted in the slot, the outer surface of the receiving plate is adapted to the inside of the rotating slot, and through the coordinated use of the connecting column, the slot, the rotating mechanism, the connecting arm, the movable slot, the supporting arm, the movable mechanism and the mounting seat, the mobile microphone replaces the experimenter's movement, reduces the experimenter's physical exertion and improves convenience, and solves the problem that the existing three-microphone array device needs the experimenter to move to change the position of himself and the microphone during operation, which is not convenient to use.

[0023] (2) The reciprocity positioning and orientation system based on the three-microphone array and its operation method are characterized by opening a mounting groove on the front side of the mounting base, a first bolt being threadedly connected to one side of the outer surface of the mounting base, and a second bolt being threadedly connected to the other side of the outer surface of the mounting base. By using the mounting groove, the first bolt and the second bolt in coordination, the microphone can be conveniently fixed and quickly disassembled and assembled.

[0024] (3) The reciprocity positioning and orientation system based on the three-microphone array and its operation method have a heat dissipation port running through the front of the bottom plate, a second filter plate is fixedly connected to the slot of the placement slot, and the diameter of the heat dissipation port is smaller than the diameter of the placement slot. By using the heat dissipation port and the second filter plate in coordination, the rotating motor can be cooled and dust can be effectively prevented from entering the placement slot.

[0025] (4) The reciprocity positioning and orientation system based on the three-microphone array and its operation method have a support column fixedly connected to the back of the base plate, a second groove is provided on the back of the support column, and a support pad is fixedly connected inside the second groove. The support column, the second groove and the second groove are used in coordination to dissipate heat for the rotating motor and protect the base plate to achieve an anti-fall effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0028] Figure 3 is a three-dimensional diagram of the connecting arm of the present invention;

[0029] Figure 4 is a three-dimensional diagram of the mounting base of the present invention;

[0030] Figure 5 is a side sectional view of a fixing column of the present invention;

[0031] Figure 6 is a cross-sectional view of a connecting arm of the present invention;

[0032] Figure 7 It is a main cross-sectional view of the fixing column of the present invention;

[0033] Figure 8 A bottom view of the base plate of the present invention;

[0034] Fig. 9 For the present invention Figure 8 A partial enlarged view of point B in the middle;

[0035] Fig.10 It is a side sectional view of the support rod of the present invention.

[0036] In the figure: 1-bottom plate, 2-fixed column, 3-support platform, 4-placing groove, 5-rotating groove, 6-adjusting mechanism, 61-connecting column, 62-card groove, 63-rotating mechanism, 631-first filter plate, 632-receiving plate, 633-rotating motor, 634-connecting rod, 635-connecting plate, 636-connecting plate, 64-connecting arm, 65-moving groove, 66-support arm, 67-moving mechanism, 671-moving motor, 672-screw rod, 68-mounting seat, 7-mounting groove, 8-first bolt, 9-second bolt, 10-heat dissipation port, 11-second filter plate, 12-support rod, 13-first groove, 14-universal wheel assembly, 15-support column, 16-second groove, 17-second groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-10The present invention provides a technical solution: a reciprocity method positioning and orientation system based on a three-microphone array, comprising a base plate 1, a fixed column 2 is fixedly connected to the front of the base plate 1, a support platform 3 is fixedly connected to the front end of the fixed column 2, a placement slot 4 is provided on the back of the fixed column 2, a rotation slot 5 is provided on the outer surface of the fixed column 2, the rotation slot 5 is connected to the placement slot 4, and an adjustment mechanism 6 is provided on the fixed column 2; the adjustment mechanism 6 comprises a connecting column 61, a card slot 62 is provided through the front of the connecting column 61, the card slot 62 is rotatably connected to the fixed column 2, a rotation mechanism 63 is provided between the connecting column 61 and the fixed column 2, a connecting arm 64 is fixedly connected to the outer surface of the connecting column 61, a moving slot 65 is provided on the front of the connecting arm 64, and the inner sliding groove 65 of the moving slot 65 A support arm 66 is connected, a moving mechanism 67 is provided between the support arm 66 and the connecting arm 64, a mounting seat 68 is fixedly connected to the front end of the support arm 66, the rotating mechanism 63 comprises a first filter plate 631 and a receiving plate 632, a rotating motor 633 is fixedly connected to the front of the first filter plate 631, the rotating motor 633 is controlled by an external remote control program, a connecting rod 634 is fixedly connected to the output end of the rotating motor 633, the receiving plate 632 is fixedly connected to the card slot 62, a connecting plate 635 is fixedly connected to the receiving plate 632, a slot 636 is provided through the front of the connecting plate 635, the connecting rod 634 is inserted into the slot 636, the outer surface of the receiving plate 632 is adapted to the interior of the rotating slot 5, and the rotating mechanism 63 is connected to the connecting column 61, the card slot 62, and the rotating mechanism 6 3. With the coordinated use of the connecting arm 64, the movable slot 65, the supporting arm 66, the movable mechanism 67 and the mounting seat 68, the mobile microphone replaces the experimenter's movement, which reduces the experimenter's physical exertion and improves convenience. This solves the problem that the existing three-microphone array device needs the experimenter to move to change the position of himself and the microphone during operation, which is not convenient to use. The movable mechanism 67 includes a movable motor 671, which is controlled by an external remote control program. The movable motor 671 is fixedly connected to the end of the connecting arm 64, and the output end of the movable motor 671 is fixedly connected to a screw rod 672. One end of the screw rod 672 passes through the connecting arm 64 and extends into the movable slot 65. The outer surface of the screw rod 672 is connected to the inner thread of the supporting arm 66. A mounting groove 7 is provided on the front of the mounting seat 68, a first bolt 8 is threadedly connected to one side of the outer surface of the mounting seat 68, and a second bolt 9 is threadedly connected to the other side of the outer surface of the mounting seat 68. The microphone can be conveniently fixed and quickly disassembled and assembled by using the mounting groove 7, the first bolt 8 and the second bolt 9 in coordination. A heat dissipation port 10 is provided through the front of the bottom plate 1, and a second filter plate 11 is fixedly connected to the slot of the placement slot 4. The diameter of the heat dissipation port 10 is smaller than that of the placement slot 4. The heat dissipation port 10 and the second filter plate 11 are used in coordination to dissipate heat for the rotating motor 633, and effectively prevent dust from entering the placement slot 4. A support rod 12 is fixedly connected to the back of the connecting arm 64, and a first groove 13 is provided on the back of the support rod 12.The first groove 13 is fixedly connected with a universal wheel assembly 14, the back of the bottom plate 1 is fixedly connected with a support column 15, the back of the support column 15 is provided with a second groove 16, the second groove 16 is fixedly connected with a support pad 17, and the support column 15, the second groove 16 and the second groove 17 are used in coordination, which is conducive to heat dissipation of the rotating motor 633 and protection of the bottom plate 1 to achieve an anti-fall effect. One end of the screw rod 672 is connected to the inside of the moving groove 65 for rotation. The size of the support platform 3 is smaller than that of the bottom plate 1. The universal wheel assembly 14 and the bottom plate 1 are on the same plane, and a plurality of support columns 15 are provided.

[0039] The present invention also discloses an operation method of a reciprocity positioning and orientation system based on a three-microphone array, which specifically comprises the following steps:

[0040] S1. First, the mobile motor 671 and the rotating motor 633 are connected to the external power supply respectively. Then, the microphone is placed in the mounting groove 7. The first bolt 8 and the second bolt 9 are rotated respectively, so that the microphone is fixed by the first bolt 8 and the second bolt 9. It is convenient to fix the microphone and realize quick disassembly and assembly. Then, the experimenter stands on the supporting platform 3.

[0041] S2. Then, when conducting an experiment, the moving motor 671 is turned on, and the moving motor 671 drives the screw rod 672 to rotate, and under the limiting effect of the moving slot 65, the support arm 66 is driven to move in the moving slot 65, thereby driving the microphone to move, so as to achieve the change of the distance between the experimenter and the microphone;

[0042] S3. Then, turn on the rotating motor 633, so that the rotating motor 633 drives the connecting rod 634 to rotate, and then drives the receiving plate 632 to move in the rotating groove 5 through the connecting plate 635, so that the connecting column 61 rotates along the outer surface of the fixed column 2, so as to place the microphone in different directions around the experimenter. Therefore, the mobile microphone replaces the movement of the experimenter, reducing the physical consumption of the experimenter to improve convenience, and solving the problem that the existing three-microphone array device needs the experimenter to move to change the position of himself and the microphone during operation, which is not convenient to use.

[0043] S4. Finally, through the above operation steps, and recording the receiving conditions of the microphones at different positions, the positioning conditions of the three-microphone array are analyzed through experimental analysis.

[0044] In the present invention, the moving motor 671 in S2 and the rotating motor 633 in S3 are both three-phase asynchronous motors.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reciprocity positioning and orientation system based on a three-microphone array, comprising a base plate (1), a front surface of the base plate (1) being fixedly connected to a fixing column (2), characterized in that: The front end of the fixed column (2) is fixedly connected to a support platform (3); a placement groove (4) is provided on the back of the fixed column (2); a rotation groove (5) is provided on the outer surface of the fixed column (2); the rotation groove (5) is communicated with the placement groove (4); and an adjustment mechanism (6) is provided on the fixed column (2); The adjusting mechanism (6) comprises a connecting column (61), a slot (62) is formed through the front surface of the connecting column (61), the slot (62) is rotatably connected to the fixed column (2), a rotating mechanism (63) is provided between the connecting column (61) and the fixed column (2), a connecting arm (64) is fixedly connected to the outer surface of the connecting column (61), a moving slot (65) is formed on the front surface of the connecting arm (64), a supporting arm (66) is slidably connected inside the moving slot (65), a moving mechanism (67) is provided between the supporting arm (66) and the connecting arm (64), and a mounting bracket is fixedly connected to the front end of the supporting arm (66). The seat (68) is provided with a rotating mechanism (63) comprising a first filter plate (631) and a receiving plate (632); the front surface of the first filter plate (631) is fixedly connected to a rotating motor (633); the output end of the rotating motor (633) is fixedly connected to a connecting rod (634); the receiving plate (632) is fixedly connected to the card slot (62); a connecting plate (635) is fixedly connected to the receiving plate (632); a slot (636) is provided through the front surface of the connecting plate (635); the connecting rod (634) is inserted into the slot (636); and the outer surface of the receiving plate (632) is adapted to the interior of the rotating slot (5).

2. The reciprocity positioning and orientation system based on a three-microphone array according to claim 1, characterized in that: The moving mechanism (67) comprises a moving motor (671), wherein the moving motor (671) is fixedly connected to the end of the connecting arm (64), and the output end of the moving motor (671) is fixedly connected to a screw rod (672), one end of the screw rod (672) passes through the connecting arm (64) and extends into the moving groove (65), and the outer surface of the screw rod (672) is connected to the internal thread of the support arm (66).

3. The reciprocity positioning and orientation system based on a three-microphone array according to claim 1, characterized in that: A mounting groove (7) is provided on the front side of the mounting seat (68); a first bolt (8) is threadedly connected to one side of the outer surface of the mounting seat (68); and a second bolt (9) is threadedly connected to the other side of the outer surface of the mounting seat (68).

4. The reciprocity positioning and orientation system based on a three-microphone array according to claim 1, characterized in that: A heat dissipation opening (10) is provided through the front side of the bottom plate (1), a second filter plate (11) is fixedly connected to the notch of the placement groove (4), and the diameter of the heat dissipation opening (10) is smaller than the diameter of the placement groove (4).

5. The reciprocity positioning and orientation system based on a three-microphone array according to claim 1, characterized in that: The back of the connecting arm (64) is fixedly connected to a support rod (12), the back of the support rod (12) is provided with a first groove (13), and the interior of the first groove (13) is fixedly connected to a universal wheel assembly (14).

6. The reciprocity positioning and orientation system based on a three-microphone array according to claim 5, characterized in that: A support column (15) is fixedly connected to the back of the bottom plate (1), a second groove (16) is provided on the back of the support column (15), and a support pad (17) is fixedly connected inside the second groove (16).

7. The reciprocity positioning and orientation system based on a three-microphone array according to claim 2, characterized in that: One end of the screw rod (672) is rotatably connected to the inside of the movable groove (65), and the size of the supporting platform (3) is smaller than the size of the bottom plate (1).

8. The reciprocity positioning and orientation system based on a three-microphone array according to claim 6, characterized in that: The universal wheel assembly (14) and the base plate (1) are located on the same plane, and a plurality of support columns (15) are provided.

9. A method for operating a reciprocity positioning and orientation system based on a three-microphone array, characterized in that: The specific steps include: S1. First, the moving motor (671) and the rotating motor (633) are connected to the external power supply respectively. Then, the microphone is placed in the mounting groove (7). The first bolt (8) and the second bolt (9) are rotated respectively, so that the microphone is fixed by the first bolt (8) and the second bolt (9). This facilitates the fixing of the microphone and realizes quick disassembly and assembly. Then, the experimenter stands on the supporting platform (3); S2. Then, when conducting an experiment, the moving motor (671) is turned on, and the moving motor (671) drives the screw rod (672) to rotate, and under the limiting effect of the moving groove (65), the supporting arm (66) is driven to move in the moving groove (65), thereby driving the microphone to move, thereby achieving the change of the distance between the experimenter and the microphone; S3. Then, the rotating motor (633) is turned on, so that the rotating motor (633) drives the connecting rod (634) to rotate, and then drives the receiving plate (632) to move in the rotating groove (5) through the connecting plate (635), so that the connecting column (61) rotates along the outer surface of the fixed column (2), so as to achieve the placement of the microphone at different positions around the experimenter; S4. Finally, through the above operation steps, and recording the receiving conditions of the microphones at different positions, the positioning conditions of the three-microphone array are analyzed through experimental analysis.

10. The method for operating a reciprocity positioning and orientation system based on a three-microphone array according to claim 9, characterized in that: The mobile motor (671) in S2 and the rotating motor (633) in S3 are both three-phase asynchronous motors.

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