CN107135446B - A kind of expandable type microphone array - Google Patents
A kind of expandable type microphone array Download PDFInfo
- Publication number
- CN107135446B CN107135446B CN201710451260.4A CN201710451260A CN107135446B CN 107135446 B CN107135446 B CN 107135446B CN 201710451260 A CN201710451260 A CN 201710451260A CN 107135446 B CN107135446 B CN 107135446B
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- mechanical arm
- array
- microphone array
- microphone
- expandable type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J18/00—Arms
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The present invention provides a kind of expandable type microphone arrays, including supporting array body, several mechanical arms, the mechanical arm is detachably connectable to the support array body by connection structure, the mechanical arm is equipped with dismountable microphone array, the microphone array is equipped with several microphones, wherein, adjustable mechanism is additionally provided between the mechanical arm and the support array body, the adjustable mechanism is used to adjust angle of the mechanical arm relative to the support array body.Pitch adjustment is rapid, formation transformation is easy.The expandable type microphone array has the characteristics that high reliablity, easy to maintenance, coverage area is big, positioning accuracy is high, small in size, light-weight, modularization, generalization, standardized, the each section for forming array is all mutually indepedent, the junction of each section all uses general, simple connection type, is highly susceptible to the assembly and disassembly of array entirety.
Description
Technical field
The present invention relates to aeroacoustics field of locating technology, in particular under noise circumstance for sound source Passive Positioning can
Expanded type microphone array.
Background technique
With the development of urban construction, the improvement of people's living standards, the motor vehicles travelled on road are more and more, vapour
The whistle sound of vehicle also becomes the main source of city noise.In order to be built to school, hospital, residential quarter, public library and other places
One comfortable environment of peace and quiet, around sternly forbid motor vehicles to ring loudspeaker, but existing video monitoring means are difficult to pair
This ban is effectively supervised.In addition, during traffic administration, simple electronic shooting and Video Supervision Technique are to rushing
The evidence obtaining of red light phenomenon has certain limitation, needs to lay more camera in large-scale crossroad, and every
A camera all has certain effective monitoring range, it is difficult to which the motor vehicles outside to effective range are effectively tracked, seriously
Affect the evidence obtaining efficiency to vehicles running red light.In order to effectively forbid motor vehicles disorderly to blow a whistle phenomenon and raising to vehicles running red light
Evidence obtaining efficiency, need monitoring and evidence-obtaining system in introduce auditory localization following function.Auditory localization following function should be realized
Separated ring and vehicles running red light are fast and accurately identified, and require false alarm rate low as far as possible.Auditory localization technology
Microphone must be used, single microphone has been no longer able to meet application demand, it is necessary to have with multiple microphones composition
The microphone array of certain structure, but the microphone array of different structure also has biggish difference to the locating effect of sound source.
Therefore, it is necessary to design a kind of microphone array with reliable detection and localization of sound source function.
Summary of the invention
The purpose of the present invention is to provide a kind of expandable type microphone arrays, are deposited with solving existing microphone array
In a noisy environment to it is separated ring violation vehicle effective position and tracking when be unable to satisfy application demand the problem of.
To achieve the above object, the present invention provides a kind of expandable type microphone arrays, if including support array body,
A dry mechanical arm, the mechanical arm are detachably connectable to the support array body by connection structure, on the mechanical arm
Equipped with dismountable microphone array, the microphone array be equipped with several microphones, wherein the mechanical arm with it is described
Adjustable mechanism is additionally provided between support array body, the adjustable mechanism is for adjusting the mechanical arm relative to the support array
The angle of main body.
Preferably, the microphone array is classified as the PCB circuit board for being welded with the bar shaped of several microphones, the mechanical arm
For hollow cylindrical structure, the hollow cylindrical structure is equipped with several apertures, and the PCB circuit board is fixedly installed in institute
It states on mechanical arm and the aperture is corresponding with the position of the microphone.
Preferably, being equipped with two grooves in the hollow cylindrical structure, the PCB circuit board is by the groove with straight
Slotting mode is fixedly installed on the mechanical arm.
Preferably, the quantity of the mechanical arm is any one value in 2~6, the number of the connection structure and adjustable mechanism
It measures identical as the quantity of the mechanical arm and respectively corresponds setting, the quantity of the microphone on the microphone array is 2~8
In any one value.
Preferably, the quantity of the mechanical arm is 4, the quantity of the microphone on the microphone array is 6.
Preferably, the connection structure includes sleeve, one end that the mechanical arm is connect with the support array body is set
In in the sleeve.
Preferably, being detachably connected in such a way that straight cutting couples or is threadedly coupled between the mechanical arm and the sleeve.
Preferably, the lower end of the sleeve is equipped with the broached-tooth design including multiple sawtooth, the adjustable structure is adjustable card
Button, it is described it is adjustable snap through to be set as being connected on different sawtooth realize and adjust the mechanical arm relative to the support battle array
The angle of column main body.
Preferably, the support array body includes top panel and lower panel, pass through between the top panel and lower panel
Connector is fixedly connected, and multiple mechanical arms are detachably connectable to the support array body by the connection structure
It edge and is uniformly distributed.
Preferably, the microphone is MEMS microphone.
The invention has the advantages that：
1, pitch adjustment is rapid, formation transformation is easy.The design of adjustable buckle can arbitrarily adjust support array body and
Pitch angle between dismountable mechanical arm can be easily between two-dimensional surface battle array and 3 D stereo battle array from 0 ° to 90 °
It switches over；
2, high reliablity, easy to maintenance.Only have 6 microphones, entire expandable type on every detachable microphone array
Microphone array only has 24 array elements, and under conditions of meeting performance requirement, array number is fewer, and system functional reliability is higher,
It is also more convenient to repair；
3, coverage area is big, positioning accuracy is high.In the array course of work, 4 dismountable mechanical arms can be to stretching, extension, Ke Yiti
Height positioning coverage area, and 4 arms carry out work simultaneously can effectively improve acoustic source location accuracy；
4, small in size, light-weight.Microphone uses high-performance MEMS microphone, remains to be optimal in microphone performance
In the case of substantially reduce the volume and weight of microphone array；
5, modularization, generalization, standardization.The each section for forming array is all mutually indepedent, and the junction of each section is all adopted
With general, simple connection type, it is highly susceptible to the assembly and disassembly of array entirety.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the expandable type microphone array of preferred embodiment；
Fig. 2 is the partial structural diagram of the expandable type microphone array of preferred embodiment.
Label declaration：1- mechanical arm；2- sleeve；21-1 sleeve；22-2 sleeve；23-3 sleeve；24-4 sleeve；
3- is adjustable buckle；No. 31-1 adjustable buckle；No. 32-2 adjustable buckle；No. 33-3 adjustable buckle；No. 34-4 adjustable buckle；4- support
Array body；41- top panel；42- lower panel；5- sensor array.
Specific embodiment
Below with reference to attached drawing of the invention, the technical scheme in the embodiment of the invention is clearly and completely described
And discussion, it is clear that as described herein is only a part of example of the invention, is not whole examples, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the present invention, make by taking specific embodiment as an example below in conjunction with attached drawing further
It illustrates, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Present embodiments provide a kind of expandable type microphone array, for motor vehicles of blowing a whistle quick and precisely positioning and
Tracking.The expandable type microphone array specifically includes a support array body and several mechanical arms, wherein each mechanical arm
It is detachably connectable on above-mentioned support array body, and is equipped on each mechanical arm removable by a connection structure respectively
The microphone array unloaded is respectively equipped with several microphones on each microphone array, wherein mechanical arm and support array body
Between be additionally provided with adjustable mechanism, the adjustable mechanism for adjusting mechanical arm relative to support array body angle.That is, each machine
Tool arm can not only dismantle as needed, removable parts microphone array, and each mechanical arm can pass through to adjust and realize and support
Array body is in different angles.
The expandable type microphone array includes multiple microphone arrays, and the mechanical arm where each microphone array can
Conveniently to exist relative to support array body progress angle adjustment so that the formation variation of entire microphone array is various, easy
Free switching is carried out between two-dimensional surface battle array and 3 D stereo battle array, and overall structure is simple, is easily assembled to and dismantles, more array elements are matched
It closes, so that system has the function of very reliable detection and localization of sound source.
Wherein, the microphone array in the present embodiment is classified as the PCB circuit board for being welded with the bar shaped of several microphones, above-mentioned
Mechanical arm be hollow cylindrical structure, hollow cylindrical structure is equipped with several apertures, and PCB circuit board is fixedly installed in machine
On tool arm and aperture is corresponding with the position of microphone.PCB circuit board is equipped with the microphone being connected with each microphone and receives circuit,
To obtain the electric signal of each microphone detection, and sent to processing equipment, and then carried out according to the processing result of those electric signals
Positioning and tracking to the motor vehicles of whistle.
The quantity of mechanical arm in the present embodiment can be set as needed as any one value in 2~6, and connection structure and
The quantity of adjustable mechanism and the quantity of mechanical arm are identical and respectively correspond setting, to be separately connected mechanical arm and array ontology,
And the angle of adjustment mechanical arm.In addition, it is 2~8 that the quantity of the microphone on microphone array, which can also be set as needed,
In any one value.For the expandable type microphone array, the quantity of mechanical arm, microphone can be adjusted as needed, so that its
With preferable scalability, consequently facilitating being realized preferable according to the different settings and arrangement for needing to carry out microphone array
Auditory localization effect.
Here connection structure is preferably sleeve, and one end that mechanical arm is connect with support array body is set in sleeve.Two
It is of coupled connections or is threadedly coupled for straight cutting between person.
In addition, the support array body in the present embodiment is hollow structure, specifically the support array body includes above
Plate and lower panel, are fixedly connected between top panel and lower panel by connector, and multiple mechanical arms can by connection structure
It is releasably connected to the edge of support array body and is uniformly distributed.Support array body material be metal, alloy or its
His any hard material.
It is illustrated below with reference to a specific embodiment.As shown in Figure 1, expandable type microphone array provided in this embodiment
Column include mechanical arm 1, sleeve 2, adjustable buckle 3 and support array body 4, wherein and the quantity of mechanical arm 1 is 4, accordingly,
Quantity also respectively 4 of sleeve 2, adjustable buckle 3, wherein sleeve 2 is detachably connected by mechanical arm 1 as connection structure
To support array body 1.And adjustable buckle 3 is used as adjustable mechanism, realizes adjusting mechanical arm 1 relative to support array body
The function of angle.
Wherein, each mechanical arm 1 be equipped with a microphone array, each microphone array 5 be welded with 6 it is transaudient
The PCB circuit board of the flat bar shaped of device, each PCB circuit board are equipped with corresponding with each microphone in the PCB circuit board
Microphone receives circuit.And mechanical arm 1 is hollow cylindrical structure, accordingly, hollow cylindrical structure is equipped with 6 linear types
The aperture of arrangement, and two grooves are equipped in the hollow cylindrical structure, PCB circuit board is fixedly installed on mechanical arm, specifically
Ground, PCB circuit board are fixedly installed on the mechanical arm the groove in a manner of straight cutting.6 of mechanical arm 1 after installation
A aperture is corresponded with the position of 6 microphones on bar shaped pcb board respectively, so that microphone can be separately by each
Aperture carries out sound detection.Wherein, microphone here is MEMS microphone.
The quantity of mechanical arm is 4, and the quantity of the microphone on microphone array is 6, and this setup makes this
Expandable type microphone array only has 24 array elements, the array element setting of the quantity, so that the system is in the item for meeting performance requirement
Under part, array element negligible amounts, and it is high to may make system functional reliability, while being also convenient for repairing.
As shown in Fig. 2, the connection structure in the present embodiment is sleeve 2, respectively No. 1 sleeve 22,3 of sleeve 21,2
Sleeve 23 and No. 4 sleeves 24, one end that four mechanical arms 1 are connect with support array body 4 are respectively arranged on No. 1 sleeve 21,2 sets
In 22, No. 3 sleeves 23 of cylinder and No. 4 sleeves 24.Wherein, detachable by way of being coupled respectively straight cutting between mechanical arm 1 and sleeve 2
Connection.In installation error allowed band, the overall diameter of dismountable mechanical arm 1 is slightly less than (21, No. 2 sleeves of No. 1 sleeve of sleeve 2
22,23, No. 4 sleeves 24 of No. 3 sleeves) interior diameter.Certainly, in other preferred embodiments, the lower end of mechanical arm 1 can also be with set
Cylinder is threadedly coupled, i.e., is respectively equipped with the screw thread to match each other on the outside of sleeve lining and mechanical arm, same to can be achieved detachably
Connection.
Wherein, the lower end of the sleeve in the present embodiment be equipped with including multiple sawtooth broached-tooth design, and adjustable structure be can
Adjust buckle 3, adjustable buckle 3 here be specially can any movable screw thick stick, 31, No. 2 adjustable cards of respectively No. 1 adjustable buckle
34) button 32,3 is adjustable to buckle 33, No. 4 adjustable buckles.(No. 1 adjustable adjustable buckle 32,3 of buckle 31,2 can for adjustable buckle 3
The adjustable buckle of buckle 33,4 is adjusted 34) to be located at sleeve 2 (23, No. 4 sleeves 24 of No. 1 sleeve of sleeve 22,3 of sleeve 21,2)
Between support array body 4, by adjusting 3 (No. 1 adjustable buckle 31, No. 2 adjustable buckles, 32, No. 3 adjustable buckles of adjustable buckle
33, No. 4 it is adjustable buckle 34) position in broached-tooth design to be clamped different sawtooth, thus it is possible to vary (No. 1 sleeve 21,2 of sleeve 2
Number sleeve 23,4 of sleeve 22,3 sleeve 24) and support 4 plane of array body between angle, and then change mechanical arm and branch
Support the angle between array body.
Referring again to shown in Fig. 2, the support array body 4 in the present embodiment includes top panel 41 and lower panel 42, above
It is fixedly connected between plate 41 and lower panel 42 by connector.Here connector is screw, and top panel 41 and lower panel 42 are equal
It is made, and is square of aluminum alloy materials, together with top panel 41 is fixed by screw with lower panel 42.And above-mentioned No. 1
23, No. 4 sleeves 24 of sleeve of sleeve 22,3 of sleeve 21,2 are separately mounted on 4 apex angles of support array body, and are passed through
Fastened by screw is together.Angle is adjusted convenient for rotation in this way, being located at the mechanical arm of quadrangle, and in the same of extension mechanical arm spacing
When, the volume of support array body structure is saved to the maximum extent.Certainly, in other preferred embodiments, when the number of mechanical arm
When measuring different, support two panels of array body that can also correspond to variation as other regular polygon structures or circular configuration, and machine
Tool arm is separately positioned on each angle of regular polygon or uniformly respectively in the edge of circular configuration.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art in the technical scope disclosed by the present invention, to deformation or replacement that the present invention is done, should be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the scope of protection of the claims.
Claims (8)
1. a kind of expandable type microphone array, which is characterized in that including supporting array body, several mechanical arms, the machine
Tool arm is detachably connectable to the support array body by connection structure, and the mechanical arm is equipped with dismountable microphone
Array, the microphone array are equipped with several microphones, wherein also set between the mechanical arm and the support array body
There is adjustable mechanism, the adjustable mechanism is used to adjust angle of the mechanical arm relative to the support array body：
The connection structure includes sleeve, and one end that the mechanical arm is connect with the support array body is set to the sleeve
It is interior；
The lower end of the sleeve is equipped with the broached-tooth design including multiple sawtooth, and the adjustable mechanism is adjustable buckle, described adjustable
Snap through the angle for being set as being connected to and realizing on different sawtooth and adjusting the mechanical arm relative to the support array body
Degree.
2. expandable type microphone array according to claim 1, which is characterized in that the microphone array, which is classified as, to be welded with
The PCB circuit board of the bar shaped of several microphones, the mechanical arm is hollow cylindrical structure, in the hollow cylindrical structure
Equipped with several apertures, the PCB circuit board is fixedly installed on the mechanical arm and the position of the aperture and the microphone
Set correspondence.
3. expandable type microphone array according to claim 2, which is characterized in that set in the hollow cylindrical structure
There are two grooves, the PCB circuit board is fixedly installed on the mechanical arm the groove in a manner of straight cutting.
4. expandable type microphone array according to claim 1 or 2, which is characterized in that the quantity of the mechanical arm is 2
The quantity of any one value in~6, the connection structure and adjustable mechanism is identical as the quantity of the mechanical arm and respectively corresponds
It is arranged, the quantity of the microphone on the microphone array is any one value in 2~8.
5. expandable type microphone array according to claim 4, which is characterized in that the quantity of the mechanical arm is 4,
The quantity of microphone on the microphone array is 6.
6. expandable type microphone array according to claim 1, which is characterized in that between the mechanical arm and the sleeve
It is detachably connected in such a way that straight cutting couples or is threadedly coupled.
7. expandable type microphone array according to claim 1, which is characterized in that the support array body includes upper
Panel and lower panel are fixedly connected between the top panel and lower panel by connector, and multiple mechanical arms pass through described
Connection structure is detachably connectable to the edge of the support array body and is uniformly distributed.
8. expandable type microphone array according to claim 1, which is characterized in that the microphone is that MEMS is transaudient
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451260.4A CN107135446B (en) | 2017-06-15 | 2017-06-15 | A kind of expandable type microphone array |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451260.4A CN107135446B (en) | 2017-06-15 | 2017-06-15 | A kind of expandable type microphone array |
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| CN107135446A CN107135446A (en) | 2017-09-05 |
| CN107135446B true CN107135446B (en) | 2018-11-30 |
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| CN201710451260.4A Active CN107135446B (en) | 2017-06-15 | 2017-06-15 | A kind of expandable type microphone array |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659885B (en) * | 2017-11-06 | 2023-12-19 | 合肥国科声拓信息技术有限公司 | Six-element microphone array acoustic signal detection equipment |
| CN112373723B (en) * | 2020-11-20 | 2022-06-21 | 中国直升机设计研究所 | Rotor noise microphone array |
| CN114088331A (en) * | 2021-11-19 | 2022-02-25 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined type microphone phase array device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828259A (en) * | 2016-03-10 | 2016-08-03 | 浙江工业大学 | Umbrella-shaped reconfigurable three-dimensional sensor array |
| CN205491134U (en) * | 2016-03-10 | 2016-08-17 | 浙江工业大学 | Umbrella -type three -dimensional microphone array that can reshuffle |
| CN207150810U (en) * | 2017-06-15 | 2018-03-27 | 上海天信网络科技股份有限公司 | A kind of expandable type microphone array |
-
2017
- 2017-06-15 CN CN201710451260.4A patent/CN107135446B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828259A (en) * | 2016-03-10 | 2016-08-03 | 浙江工业大学 | Umbrella-shaped reconfigurable three-dimensional sensor array |
| CN205491134U (en) * | 2016-03-10 | 2016-08-17 | 浙江工业大学 | Umbrella -type three -dimensional microphone array that can reshuffle |
| CN207150810U (en) * | 2017-06-15 | 2018-03-27 | 上海天信网络科技股份有限公司 | A kind of expandable type microphone array |
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| CN107135446A (en) | 2017-09-05 |
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