CN107135446A - A kind of expandable type microphone array - Google Patents
A kind of expandable type microphone array Download PDFInfo
- Publication number
- CN107135446A CN107135446A CN201710451260.4A CN201710451260A CN107135446A CN 107135446 A CN107135446 A CN 107135446A CN 201710451260 A CN201710451260 A CN 201710451260A CN 107135446 A CN107135446 A CN 107135446A
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- CN
- China
- Prior art keywords
- mechanical arm
- microphone array
- array
- expandable type
- support
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Classifications
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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
Landscapes
- 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 invention provides a kind of expandable type microphone array, including support array body, several mechanical arms, the mechanical arm is detachably connectable to the support array body by attachment structure, the mechanical arm is provided with dismountable microphone array, the microphone array is provided 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.Pitching adjustment is rapid, formation conversion is easy.The expandable type microphone array has that reliability is high, easy to maintenance, coverage is big, positioning precision is high, small volume, lightweight, modularization, generalization, standardization the characteristics of, the each several part for constituting array is all separate, the junction of each several part all uses general, simple connected mode, is highly susceptible to the overall assembly and disassembly of array.
Description
Technical field
The present invention relates to aeroacoustics field of locating technology, more particularly under noise circumstance for sound source Passive Positioning can
Expanded type microphone array.
Background technology
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 sound of blowing a whistle of car also turns into 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, it is severe around it to 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 often
Individual camera all has certain effective monitoring scope, it is difficult to which the motor vehicles outside to effective range are effectively tracked, seriously
It has impact on 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, it is necessary in monitoring and evidence-obtaining system introduce auditory localization following function.Auditory localization following function should be realized
Fast and accurately recognized to disobeying ring and vehicles running red light, and require that false alarm rate should be 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 larger difference to the locating effect of sound source.
Accordingly, it would be desirable to design a kind of microphone array for having and reliably detecting with localization of sound source function.
The content of the invention
It is an object of the invention to provide a kind of expandable type microphone array, deposited with solving existing microphone array
In a noisy environment to disobey ring violation vehicle effective positioning and tracking when can not meet application demand the problem of.
To achieve the above object, the invention provides a kind of expandable type microphone array, if including support array body,
Dry mechanical arm, the mechanical arm is detachably connectable on the support array body, the mechanical arm by attachment structure
Provided with dismountable microphone array, the microphone array is provided with several microphones, wherein, the mechanical arm with it is described
Adjustable mechanism is additionally provided between support array body, the adjustable mechanism is used to adjust the mechanical arm relative to the support array
The angle of main body.
It is preferred that the microphone array is classified as the PCB for the bar shaped for being welded with several microphones, the mechanical arm
For hollow cylindrical structure, the hollow cylindrical structure is provided with several perforates, and the PCB is fixedly installed in institute
State on mechanical arm and the perforate is corresponding with the position of the microphone.
It is preferred that provided with two grooves in the hollow cylindrical structure, the PCB is by the groove with straight
Slotting mode is fixedly installed on the mechanical arm.
It is preferred that the quantity of the mechanical arm is any one value in 2~6, the number of the attachment structure and adjustable mechanism
Amount is identical with the quantity of the mechanical arm and is correspondingly arranged respectively, and the quantity of the microphone on the microphone array is 2~8
In any one value.
It is preferred that the quantity of the mechanical arm is 4, the quantity of the microphone on the microphone array is 6.
It is preferred that the attachment structure includes sleeve, one end that the mechanical arm is connected with the support array body is set
In in the sleeve.
It is preferred that being detachably connected between the mechanical arm and the sleeve by way of straight cutting is coupled or is threadedly coupled.
It is preferred that the lower end of the sleeve is adjustable card provided with the broached-tooth design of multiple sawtooth, the adjustable structure is included
Button, it is described it is adjustable snap through to be set to be connected on different sawtooth realize the regulation mechanical arm relative to the support battle array
The angle of row main body.
It is preferred that 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 attachment structure
Edge and it is uniformly distributed.
It is preferred that the microphone is MEMS microphone.
The invention has the advantages that:
1st, pitching adjusts rapid, formation conversion simplicity.The design of adjustable buckle can arbitrarily adjust support array body and
Luffing angle between dismountable mechanical arm, can be easily between two dimensional surface battle array and 3 D stereo battle array from 0 ° to 90 °
Switch over;
2nd, reliability is high, easy to maintenance.Only have 6 microphones, whole expandable type on every detachable microphone array
Microphone array only has 24 array elements, and under conditions of performance requirement is met, array number is fewer, and system functional reliability is higher,
Maintenance is also more convenient;
3rd, coverage is big, positioning precision is high.In the array course of work, 4 dismountable mechanical arms can be to stretching, extension, Ke Yiti
Height positioning coverage, and 4 arms are while acoustic source location accuracy can be effectively improved by being operated;
4th, small volume, lightweight.Microphone uses high-performance MEMS microphone, remains to what is be optimal in microphone performance
In the case of substantially reduce the volume and weight of microphone array;
5th, modularization, generalization, standardization.The each several part for constituting array is all separate, and the junction of each several part is all adopted
With general, simple connected mode, it is highly susceptible to the overall assembly and disassembly of array.
Brief description of the drawings
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 arms;2- sleeves;21-1 sleeves;22-2 sleeves;23-3 sleeves;24-4 sleeves;
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- is supported
Array body;41- top panels;42- lower panels;5- sensor arrays.
Embodiment
Below with reference to the accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention
And discussion, it is clear that as described herein is only a part of example of the present invention, is not whole examples, based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the present invention, make further by taking specific embodiment as an example below in conjunction with accompanying drawing
Illustrate, 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 with each mechanical arm removable by an attachment structure respectively
Several microphones are respectively equipped with the microphone array unloaded, each microphone array, wherein, mechanical arm and support array body
Between be additionally provided with adjustable mechanism, the adjustable mechanism be used for adjusting mechanical arm relative to support array body angle.That is, each machine
Tool arm can not only be dismantled as needed, removable parts microphone array, and each mechanical arm can be realized and support by adjusting
Array body is in different angles.
Mechanical arm where the expandable type microphone array includes multiple microphone arrays, and each microphone array can
To carry out angle adjustment relative to support array body so that the formation of whole microphone array changes various, simplicity, conveniently exists
Free switching is carried out between two dimensional surface battle array and 3 D stereo battle array, and overall structure is simple, it is easy to assembling and dismounting, many array elements are matched somebody with somebody
Close so that system has very reliable detection and localization of sound source function.
Wherein, the microphone array in the present embodiment is classified as the PCB for the bar shaped for being welded with several microphones, above-mentioned
Mechanical arm be hollow cylindrical structure, hollow cylindrical structure is provided with several perforates, and PCB is fixedly installed in machine
On tool arm and perforate is corresponding with the position of microphone.PCB is provided with the microphone receiving circuit being connected with each microphone,
To obtain the electric signal of each microphone detection, and send, and then carried out according to the result of those electric signals to processing equipment
To the positioning and tracking of the motor vehicles blown a whistle.
The quantity of mechanical arm in the present embodiment can be arranged as required to as any one value in 2~6, and attachment structure and
The quantity of adjustable mechanism is identical with the quantity of mechanical arm and is correspondingly arranged respectively, to connect mechanical arm and array body respectively,
And the angle of adjustment mechanical arm.In addition, the quantity of the microphone on microphone array can be also arranged as required to as 2~8
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 according to setting and arrangement that microphone array is carried out the need for difference, realizing preferable
Auditory localization effect.
Here attachment structure is preferably sleeve, and one end that mechanical arm is connected with support array body is 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-core construction, specifically the support array body is included above
Plate and lower panel, are fixedly connected between top panel and lower panel by connector, and multiple mechanical arms can by attachment structure
Releasably it is connected to the edge of support array body and is uniformly distributed.Support array body material for metal, alloy or its
His any hard material.
Illustrated with reference to a specific embodiment.As shown in figure 1, the expandable type microphone array that the present embodiment is provided
Row include mechanical arm 1, sleeve 2, adjustable buckle 3 and support array body 4, wherein, the quantity of mechanical arm 1 is 4, accordingly,
Sleeve 2, the quantity of adjustable buckle 3 are also respectively 4, wherein, sleeve 2 is detachably connected by mechanical arm 1 as attachment structure
To support array body 1.And adjustable buckle 3 realizes adjusting mechanical arm 1 relative to support array body as adjustable mechanism
The function of angle.
Wherein, each mechanical arm 1 is provided with microphone array, each microphone array 5 be welded with 6 it is transaudient
The PCB of the flat bar shaped of device, each PCB is provided with corresponding with each microphone in the PCB
Microphone receiving circuit.And mechanical arm 1 is hollow cylindrical structure, accordingly, hollow cylindrical structure is provided with 6 linear patterns
Provided with two grooves in the perforate of arrangement, and the hollow cylindrical structure, PCB is fixedly installed on mechanical arm, specifically
Ground, PCB is fixedly installed on the mechanical arm by way of the groove is with straight cutting.6 of mechanical arm 1 after installation
Individual perforate is corresponded with the position of 6 microphones on bar shaped pcb board respectively, so that microphone can be separately by each
Perforate 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 causes this
Expandable type microphone array only has 24 array elements, and the array element of the quantity is set so that the system is meeting the bar of performance requirement
Under part, array element negligible amounts, and may be such that system functional reliability is high, while also allowing for maintenance.
As shown in Fig. 2 the attachment structure in the present embodiment is sleeve 2, respectively No. 1 sleeve 21, No. 2 sleeves 22, No. 3
Sleeve 23 and No. 4 sleeves 24, four mechanical arms 1 are respectively arranged on No. 1 sleeve 21, No. 2 sets with one end that support array body 4 is connected
In cylinder 22, No. 3 sleeves 23 and No. 4 sleeves 24.Wherein, it is detachable by way of straight cutting is coupled respectively between mechanical arm 1 and sleeve 2
Connection.In alignment error allowed band, the overall diameter of dismountable mechanical arm 1 is slightly less than sleeve 2 (No. 1 sleeve 21, No. 2 sleeves
22nd, No. 3 sleeves 23, No. 4 sleeves 24) interior diameter.Certainly, in other preferred embodiments, the lower end of mechanical arm 1 also can be with set
Cylinder is threadedly coupled, i.e., be respectively equipped with the screw thread matched 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 is provided with including the broached-tooth design of multiple sawtooth, and adjustable structure be can
Adjust buckle 3, adjustable buckle 3 here be specially can any activity screw thick stick, respectively No. 1 adjustable buckle 31, No. 2 adjustable cards
Button 32, No. 3 adjustable buckles 33, No. 4 adjustable buckles 34).Adjustable buckle 3 (No. 1 adjustable buckle 31, No. 2 adjustable buckles 32, No. 3 can
Adjust buckle 33, No. 4 adjustable buckles 34) it is located at sleeve 2 (No. 1 sleeve 21, No. 2 sleeves 22, No. 3 sleeves 23, No. 4 sleeves 24) respectively
Between support array body 4, by adjusting adjustable buckle 3 (No. 1 adjustable buckle 31, No. 2 adjustable buckles 32, No. 3 adjustable buckles
33rd, No. 4 adjustable buckles 34) position in broached-tooth design is with the different sawtooth of clamping, thus it is possible to vary (No. 1 sleeve 21,2 of sleeve 2
Number sleeve 22, No. 3 sleeves 23, No. 4 sleeves 24) angle between the support plane of array body 4, 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 up of aluminum alloy materials, and is square, together with top panel 41 is fixed by screw with lower panel 42.And above-mentioned No. 1
Sleeve 21, No. 2 sleeves 22, No. 3 sleeves 23, No. 4 sleeves 24 are separately mounted to support on 4 drift angles of array body, and pass through
Fastened by screw is together.So, the mechanical arm positioned at corner is easy to rotate regulation angle, and in the same of extension mechanical arm spacing
When, the volume of support array body structure is saved to greatest extent.Certainly, in other preferred embodiments, when the number of mechanical arm
When measuring different, two panels of support array body can also correspond to change and turn to other regular polygon structures or circular configuration, and machine
Tool arm is separately positioned on each angle of regular polygon or uniform respectively in the edge of circular configuration.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art the invention discloses technical scope in, to the present invention deformation or replacement done, should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by described scope of the claims.
Claims (10)
1. a kind of expandable type microphone array, it is characterised in that including support array body, several mechanical arms, the machine
Tool arm is detachably connectable to the support array body by attachment structure, and the mechanical arm is provided with dismountable microphone
Array, the microphone array is provided 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.
2. expandable type microphone array according to claim 1, it is characterised in that the microphone array, which is classified as, to be welded with
The PCB of the bar shaped of several microphones, the mechanical arm is in hollow cylindrical structure, the hollow cylindrical structure
Provided with several perforates, the PCB is fixedly installed on the mechanical arm and the perforate and the position of the microphone
Put correspondence.
3. expandable type microphone array according to claim 2, it is characterised in that set in the hollow cylindrical structure
There are two grooves, the PCB is fixedly installed on the mechanical arm by way of the groove is with straight cutting.
4. expandable type microphone array according to claim 1 or 2, it is characterised in that the quantity of the mechanical arm is 2
The quantity of any one value in~6, the attachment structure and adjustable mechanism is identical with the quantity of the mechanical arm and corresponds to respectively
Set, 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, it is characterised 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, it is characterised in that the attachment structure includes sleeve,
One end that the mechanical arm is connected with the support array body is in the sleeve.
7. expandable type microphone array according to claim 1, it is characterised in that between the mechanical arm and the sleeve
It is detachably connected by way of straight cutting is coupled or is threadedly coupled.
8. expandable type microphone array according to claim 7, it is characterised in that the lower end of the sleeve, which is provided with, to be included
The broached-tooth design of multiple sawtooth, the adjustable structure is adjustable buckle, it is described it is adjustable snap through be set to be connected to it is different
Angle of the regulation mechanical arm relative to the support array body is realized on sawtooth.
9. expandable type microphone array according to claim 1, it is characterised 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
Attachment structure is detachably connectable to the edge of the support array body and is uniformly distributed.
10. expandable type microphone array according to claim 1, it is characterised in that the microphone is that MEMS is transaudient
Device.
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CN201710451260.4A CN107135446B (en) | 2017-06-15 | 2017-06-15 | A kind of expandable type microphone array |
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CN201710451260.4A CN107135446B (en) | 2017-06-15 | 2017-06-15 | A kind of expandable type microphone array |
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CN107135446A true CN107135446A (en) | 2017-09-05 |
CN107135446B CN107135446B (en) | 2018-11-30 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107659885A (en) * | 2017-11-06 | 2018-02-02 | 合肥国科声拓信息技术有限公司 | Hexa-atomic microphone array acoustical signal processing equipment |
CN112373723A (en) * | 2020-11-20 | 2021-02-19 | 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 |
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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 |
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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 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107659885A (en) * | 2017-11-06 | 2018-02-02 | 合肥国科声拓信息技术有限公司 | Hexa-atomic microphone array acoustical signal processing equipment |
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 |
CN112373723A (en) * | 2020-11-20 | 2021-02-19 | 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 |
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