CN102098610A - Loudspeaker unit, loudspeaking device and orientated sound wave bird driving device - Google Patents
Loudspeaker unit, loudspeaking device and orientated sound wave bird driving device Download PDFInfo
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Abstract
The invention discloses a loudspeaker unit, a loudspeaking device and an orientated sound wave bird driving device, wherein the loudspeaking device comprises a mounting base, one or more loudspeaker units, loudspeakers and front reflecting pieces, wherein the one or more loudspeaker units include reflection-type radiators; the loudspeakers are mounted in the cavities of the reflection-type radiators; the front reflecting pieces are arranged in front of the loudspeakers. On the other hand, the orientated sound wave bird driving device comprises a sound source supplying circuit module for generating one or more first bird driving audio signals, an audio processing circuit module for carrying out signal processing on the first bird driving audio signals to obtain a first digital modulated audio data stream, a power processing circuit module for amplifying and filtering the first digital modulated audio data stream and converting the first digital modulated audio data stream into second bird driving audio signals and the loudspeaking device for outputting the second bird driving audio signals. Through the invention, an effect of effectively and remotely driving birds can be achieved.
Description
Technical field
The present invention relates to sound wave and produce and application, in particular to a kind of loudspeaker unit, loudspeaker arrangement and directed sound wave scarer.
Background technology
Along with people protect environment, love bird, protect the enhancing of bird consciousness; birds quantity increases year by year; the scope of mankind's activity simultaneously constantly enlarges, and the natural environment of make suitable birdife, perch, multiplying reduces significantly, the desirable place that the airport just becomes birdife, perches, multiplies.Therefore the birds incident that jeopardizes flight safety increases year by year, and the loss that causes is increasing.Hit incident in case bird is taken place, gently then cause the certain economic loss, heavy then fatal crass.
In the existing correlation technique, when birds fly infrared acquisition when zone, the pyroelectricity element is converted to the signal of telecommunication with this infrared signal, drives directed sound wave warning system and sends and drive bird sound, the sphere of action of device is 16m, can effectively drive away the birds on electric power pylon top.
In the existing correlation technique, when birds entered into the protection zone, the radar signal module was given the supersonic wave bird driving module with the feedback information that detects, and the supersonic wave bird driving module is sent ultrasonic wave, have to drive the bird effect preferably, but the scope of driving bird was not more than 20m.Disclose a kind of directed sound wave scarer at present, the main feature of its invention is and can long-range reception instructs, but the volume change at random, and the audio repository of storage can upgrade in time, is not more than 20m but drive the bird scope.
At present the airport bird scaring equipment at correlation technique all is confined in the smaller sphere of action, can't implement the problem of driveing at a distance to the birds on the whole airfield runway or the navigation channel of rising and falling, and does not propose effective solution at present as yet.
Summary of the invention
Airport bird scaring equipment at correlation technique all is confined in the smaller sphere of action, can't implement the problem drive at a distance to the birds on the whole airfield runway or the navigation channel of rising and falling, do not propose effective solution as yet at present and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of loudspeaker unit, loudspeaker arrangement and directed sound wave scarer, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of loudspeaker unit is provided, comprise: reflective radiator, this reflective radiator comprises the reflective side walls of the taper of opening wide towards the place ahead and the rear wall that is connected the reflective side walls rear end, forms cavity between reflective side walls and the rear wall; Loud speaker is installed in the cavity of reflective radiator; Preposition reflecting element is arranged on the place ahead of loud speaker.
Further, preposition reflecting element is a reflector.
Further, the rear wall of the open end orientating reflex formula radiator of reflector, and and rear wall between preset distance is arranged.
Further, the middle part of the rear wall of reflective radiator has the phase plug towards loud speaker.
Further, loudspeaker unit also comprises annular fixing member, the footing that this annular fixing member comprises annular slab and is arranged on annular slab one side, annular fixing member is fixed on the rear wall of reflective radiator by footing, makes the rear wall of annular slab and reflective radiator leave the space.
Further, the height of the footing of annular fixing member is identical with the height of the phase plug of the rear wall of reflective radiator.
Further, the reflective side walls of reflective radiator is the exponential type curved surface.
Further, the rear wall of the horn mouth orientating reflex formula radiator of loud speaker.
A kind of loudspeaker arrangement is provided according to another aspect of the present invention, and this device comprises: mounting base; Loudspeaker unit is arranged on the mounting base, and arranges towards predetermined direction.
Further, mounting base is plate-like, has a plurality of installing holes, is separately installed with the loudspeaker unit of a correspondence in each installing hole, and each loudspeaker unit is all arranged towards first side of mounting base; Loudspeaker arrangement also comprises reticular lamina, is installed in first side of mounting base, covers the place ahead of each loudspeaker unit.
Further, the installing hole on the mounting base is a through hole; Loudspeaker arrangement also comprises cover plate, is arranged on second side relative with first side of mounting base, covers the rear of each loudspeaker unit, and the outer surface of cover plate is provided with double handle.
What further, reflective radiator mutual spacing was less than or equal to loudspeaker arrangement output drives the long wavelength's of bird audio signal 1/4th.
A kind of directed sound wave scarer is provided according to another aspect of the present invention, and this orientation sound wave scarer comprises above any above-mentioned loudspeaker arrangement.
Further, this orientation sound wave scarer also comprises: source of sound supply circuit module produces one or more first and drives the bird audio signal; The audio frequency processing circuit module is driven the bird audio signal to first and is carried out signal processing, to obtain the audio data stream of first digital modulation; The Power Processing circuit module is done to amplify and Filtering Processing to the audio data stream of first digital modulation, and converts second to and drive the bird audio signal; Loudspeaker arrangement is used to export second and drives the bird audio signal; The power circuit module links to each other with the audio frequency processing circuit module, and realizes power management.
Further, the audio frequency processing circuit module comprises: AD converter, and be used for driving the bird audio signal and carry out digital-to-analogue conversion first, obtain the audio data stream of second digital modulation; Audio frequency DSP is used for the audio data stream waveform of second digital modulation is carried out shaping, and the PCM conversion of signals of audio data stream is become pwm signal, finishes the setting to the pwm signal parameter simultaneously, to obtain the audio data stream of first digital modulation; Programmable logic device (CPLD) is used to obtain the audio data stream of first digital modulation, and finishes the audio data stream communication channel delay control to first digital modulation.
Further, the Power Processing circuit module comprises: the MOSFET power tube, carry out power amplification with the bird audio data stream of driving of first digital modulation, to drive the bird audio data stream after amplifying; Low pass filter carries out filtering to the bird audio data stream of driving after amplifying, and drives the bird audio signal to obtain second; Second drives the bird audio signal exports via loudspeaker arrangement.
Further, source of sound supply circuit module also comprises Audio storage unit, and first in the Audio storage unit driven the bird audio signal for prerecording or USB flash disk is imported immediately.
Further, second to drive bird audio signal acoustic pressure be 160dB, effectively drives the bird distance and be 3000m, and the institute frequency acoustic wave beam angle of pronouncing is less than or equal to 10 °.
By the present invention, adopted a kind of loudspeaker unit, loudspeaker arrangement and directed sound wave scarer: wherein, loudspeaker arrangement comprises mounting base; One or more loudspeaker units, loudspeaker unit comprises: reflective radiator; Loud speaker is installed in the cavity of reflective radiator; Preposition reflecting element is arranged on the place ahead of loud speaker.On the other hand, directed sound wave scarer comprises: source of sound supply circuit module produces one or more first and drives the bird audio signal; The audio frequency processing circuit module is driven the bird audio signal to first and is carried out signal processing, to obtain the audio data stream of first digital modulation; The Power Processing circuit module is done to amplify and Filtering Processing to the audio data stream of first digital modulation, and converts second to and drive the bird audio signal; Loudspeaker arrangement is used to export second and drives the bird audio signal; The power circuit module, link to each other with the audio frequency processing circuit module,, solved airport bird scaring equipment and all be confined in the smaller sphere of action, can't implement the problem that remote orientation is driven to the birds on the whole airfield runway or the navigation channel of rising and falling, and then reach the effect of effectively driving bird at a distance.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the loudspeaker unit generalized section according to the embodiment of the invention;
Fig. 2 is reflective radiator structure and a generalized section in the loudspeaker arrangement according to the embodiment of the invention;
Fig. 3 is according to annular fixing member structural representation in the loudspeaker unit of the embodiment of the invention;
Fig. 4 is according to annular fixing member generalized section in the loudspeaker unit of the embodiment of the invention;
Fig. 5 is the loudspeaker arrangement structural representation according to the embodiment of the invention;
Fig. 6 is the structural principle schematic diagram according to the directed sound wave scarer of the embodiment of the invention;
Fig. 7 is according to the audio frequency processing circuit module of the embodiment of the invention and Power Processing circuit module handling process schematic diagram;
Fig. 8 is the directed sound wave scarer source of sound supply circuit module diagram according to the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the loudspeaker unit generalized section according to the embodiment of the invention, and Fig. 2 is reflective radiator structure and a generalized section in the loudspeaker arrangement according to the embodiment of the invention.In conjunction with Fig. 1 and shown in Figure 2: this loudspeaker unit comprises: reflective radiator 11, and it comprises the reflective side walls 111 of the taper of opening wide towards the place ahead and the rear wall 112 that is connected the reflective side walls rear end, forms cavity 113 between reflective side walls 111 and the rear wall 112; Loud speaker 14 is installed in the cavity 113 of reflective radiator 11; Preposition reflecting element 15 is arranged on the place ahead of loud speaker 14.
In the above embodiment of the present invention, preposition reflecting element 15 can be a reflector.As shown in Figure 1, the rear wall 112 of the open end orientating reflex formula radiator 11 of reflector, and and rear wall 112 between preset distance is arranged.
Preferably, the middle part of the rear wall 112 of reflective radiator 11 has the phase plug 112a towards loud speaker, and this phase plug 112a is that a surface is the projection of hyperbolic-type.
Fig. 3 is according to annular fixing member structural representation in the loudspeaker unit of the embodiment of the invention.This loudspeaker unit also comprises annular fixing member 13, the footing 131 that this annular fixing member 13 comprises annular slab 132 and is arranged on annular slab one side, annular fixing member 13 is fixed on the rear wall 112 of reflective radiator 11 by footing 131, makes the annular slab 132 and the rear wall 112 of reflective radiator 11 leave the space.
Fig. 4 is according to annular fixing member generalized section in the loudspeaker unit of the embodiment of the invention.In conjunction with Fig. 1 and shown in Figure 4, the height of the footing 131 of annular fixing member 13 is identical with the height of the phase plug 112a of the rear wall 112 of reflective radiator 11.
Specific embodiments of the invention are as follows: the reflective side walls 111 of reflective radiator 11 forms cavity 113 with the rear wall of reflective side walls rear end 112; Loud speaker 14 is installed in the cavity 113 of reflective radiator 11, and the rear wall 112 of the horn mouth orientating reflex formula radiator of loud speaker 14; The reflective side walls 111 of reflective radiator is the exponential type curved surface; The middle part of the rear wall 112 of reflective radiator has the phase plug 112a towards loud speaker 14, and phase plug 112a is that a surface is the projection of hyperbolic-type.The footing 131 that annular fixing member comprises annular slab 132 and is arranged on annular slab 132 1 sides, annular fixing member 13 is fixed on the rear wall 112 of reflective radiator by footing 131, makes the rear wall 112 of annular slab and reflective radiator leave the space.The height of footing 131 is identical with the height of the phase plug 112a of the rear wall of reflective radiator 112.
In the above embodiment of the present invention, in conjunction with Fig. 1 and Fig. 2, the phase plug 112a coaxial line of annular fixing member 13 bottom reflective radiator, annular fixing member 13 places the top of reflective radioactive phase plug 112a by annular slab 132 with the horn mouth of loud speaker 14, guarantees that sound wave that loud speaker sent is sent by the venturi that the rear wall 112 of the reflective side walls 111 of reflective radiator and reflective radiator forms; The preferred magneto-electric high-fidelity loudspeaker that adopt of loud speaker 14, the preposition reflector 15 of the tight cover of loud speaker 14 other ends, and and the rear wall 112 of reflective radiator between preset distance is arranged.Preposition reflector 15 can be a reflector, and it mainly acts on the consistency that is the guide sound field and fixing loudspeaker signal line.
Fig. 5 is the loudspeaker arrangement structural representation according to the embodiment of the invention, and this loudspeaker arrangement 1 includes aforesaid loudspeaker unit, and as shown in Figure 5, this loudspeaker arrangement 1 also includes mounting base 12, and it is plate-like, has a plurality of installing holes.The material of mounting base 12 can be the nonmetallic materials with radiation proof and anti-flaming function, also can be titanium alloy or stainless steel.Installing hole on the mounting base is a through hole, is separately installed with the loudspeaker unit of a correspondence in each installing hole, and each loudspeaker unit is all arranged towards first side of mounting base.Loudspeaker unit can be according to ring-type or rectangular-shaped being arranged in the mounting base, and preferred mode is for pressing the loudspeaker unit in center, and six loudspeaker units of periphery are closely arranged.What the mutual spacing of each loudspeaker unit was less than or equal to 1 output of described loudspeaker arrangement drives the long wavelength's of bird audio signal 1/4th.Loudspeaker arrangement 1 also comprises reticular lamina 16, is installed in first side of mounting base 12 by clench nail 17, covers the place ahead of each loudspeaker unit, and the mesh diameter of reticular lamina 16 is preferentially selected 1-3mm for use.Loudspeaker arrangement 1 also comprises cover plate 18, be arranged on second side relative of mounting base 12 with first side, cover the rear of each loudspeaker unit, the outer surface of described cover plate is provided with double handle 19, and operating personnel regulate the pitching and the azimuth of loudspeaker arrangement 1 by holding double handle 19.
Fig. 6 is the structural principle schematic diagram according to the directed sound wave scarer of the embodiment of the invention.As shown in Figure 6, this device can comprise: source of sound supply circuit module 4 is used to produce one or more first and drives the bird audio signal; Audio frequency processing circuit module 3 is driven the bird audio signal to first and is carried out signal processing, to obtain the audio data stream of first digital modulation; Power Processing circuit module 2 is used for the audio data stream of first digital modulation being done to amplify, after the Filtering Processing, and converting second to and drive the bird audio signal; Loudspeaker arrangement 1 is used to export second and drives the bird audio signal.This device also comprises power circuit module 5, power circuit module 5 is converted into the 220V alternating voltage direct voltage of 48V, and then regeneration 24V, 12V, 5V and 3V DC power supply, supply with loudspeaker arrangement 1, audio frequency processing circuit module 3, Power Processing circuit module 2 and source of sound supply circuit module 4 respectively.
In the above embodiment of the present invention, by the directed sound wave scarer that constitutes by loudspeaker arrangement 1, Power Processing circuit module 2, audio frequency processing circuit module 3, source of sound supply circuit module 4 and power circuit module 5, the bird signal that drives that makes airport bird scaring equipment send is not confined in the smaller sphere of action, can implement remote orientation to the birds on the whole airfield runway or the navigation channel of rising and falling and drive, and then reach the effect of effectively driving bird at a distance.
Concrete, the following detailed introduction of the workflow of the above embodiment of the present invention, at first produce and drive the bird audio signal at first of different regions, Various Seasonal and different birds by source of sound supply circuit module 4, source of sound supply circuit module 4 can provide prerecord first drive the bird audio signal, also can drive the bird audio signal by the instant input all kinds of first of USB flash disk.Carry out the computing processing and amplifying by the audio signal of 3 pairs of source of sound supply circuits of audio frequency processing circuit module module, 4 inputs then, carry out the parameter setting simultaneously, parallel computation and communication channel delay, to obtain the audio data stream of first digital modulation, the audio data stream of this first digital modulation offers Power Processing circuit module 2 and amplifies the most at last, filtering, convert second again to and drive the bird audio signal, this second drive the bird audio signal with the form of analog signal by loudspeaker arrangement 1 output, drive bird audio signal acoustic pressure through second of loudspeaker arrangement 1 output and can reach 160dB, effectively drive bird distance and can reach 3000m, the institute frequency acoustic wave beam angle of pronouncing is less than or equal to 10 °.
Fig. 7 is according to the audio frequency processing circuit module of the embodiment of the invention and Power Processing circuit module handling process schematic diagram.Audio frequency processing circuit module 3 comprises: AD converter, and be used for driving the bird audio signal and carry out digital-to-analogue conversion first, obtain the audio data stream of second digital modulation; Audio frequency DSP is used for the audio data stream waveform of second digital modulation is carried out shaping, and the audio data stream PCM conversion of signals of second digital modulation is become pwm signal, finishes the setting to the pwm signal parameter simultaneously, to obtain the audio data stream of first digital modulation; Programmable logic device (CPLD) is used to obtain the audio data stream of first digital modulation, and finishes the audio data stream communication channel delay control to first digital modulation.The renewal of audio frequency processing circuit module sound intermediate frequency signal, broadcast begin, stop and selecting by external options button control operation.Power Processing circuit module 2 comprises: the MOSFET power tube, with first digital modulation drive the power amplification of bird audio data stream, to drive the bird audio data stream after obtaining to amplify; Low pass filter drives the bird audio data stream after conversion is amplified, and drives the bird audio signal to obtain second; Second drives the bird audio signal via loudspeaker arrangement 1 output.
In the above embodiment of the present invention, audio frequency processing circuit module 3 can become autonomous system separately, also can with 2 cascades of Power Processing circuit module, realize principal and subordinate's control model.As shown in Figure 7, audio frequency processing circuit module 3 and the Power Processing circuit module 2 preferred modes that adopt cascade, audio frequency processing circuit module 3 is a primary module, Power Processing circuit module 2 is from module.These audio frequency processing circuit module 3 control and treatment plates provide USB flash disk source of sound input interface 31, input signal obtains being cascaded to the differential signal of other modules through cascade circuit 32, to work as pre-processing module and adopt the corresponding connection of shielding conductors with subtending port 32 from module, maximum can 8 modules of cascade, promptly 64 tunnel outputs can be driven the bird audio signal output to multichannel loudspeaker 14 with second like this.Audio frequency processing circuit module 3 is except that having audio frequency amplifier 33 and the effect for back level power supply; also provide output interface 35, single-chip microcomputer online updating code interface 36 and parameter that interface 37 is set, simultaneously, audio frequency processing circuit module 3 also has short circuit; overload, the overheat protector function.38 designs of volume control display module have the volume controlled encoder, control the size of output volume by regulating encoder, and the size of volume is divided into 0～100 scope interval is shown on the LED screen of volume control display module 38.Audio frequency processing circuit module 3 has for the required power circuit module 5 of rear end Power Processing circuit module 2, and the DC-DC that power circuit module 5 adopts vehicle-mounted level is converted to the 48V source of stable pressure voltages such as chip on the Power Processing circuit module 2 required 5V, 3.3V, 1.8V.First through audio frequency DSP (for example drives the bird audio signal, D2Audio intelligent audio processor 34) carries out dsp code to finish code conversion, what obtain required digital modulation drives the bird audio data stream, send into the MOSFET power amplification circuit through small-signal digital drive circuit and carry out power amplification, the bird audio data stream of driving after will amplifying is at last passed through filter, extracts second of simulation and drives the bird audio signal.
Fig. 8 is the directed sound wave scarer source of sound supply circuit module diagram according to the embodiment of the invention.As shown in Figure 8, this source of sound supply circuit module 4 comprises: main control MCU 41, flash-memory storage system 42, debug i/f circuit 43, power-supply system 45 and output interface 44, in this module, as shown in Figure 7, main control MCU 41 adopts 8 multimedia microprocessor AT89C51SND1C chips, this chip carries the 51 kernel single-chip microcomputers of MPEG I/II-Layer hardware decoder and Human Interface, support is to the decoding of 8～320kbps elementary stream, and the sampling frequency scope of support is 16～48kHz.Flash-memory storage system 42 is selected the 1GB FLASH storage chip K9F5608U0B of SAMSUNG company for use.This memory can be stored the music of 19 hours 128kbp/s, and effect can reach CD Quality.Debug i/f circuit 43 carries out the download of audio-frequency information by USB interface and portable computer, and audio-frequency information comprises that the sound, the bird of prey of birds natural enemy catches wail sound that the horrible cry sound of birds, birds hit by shotgun and explosive sound etc.The renewal of sound source signal, broadcast begin, stop and selecting by external options button control operation.Power-supply system 45 links to each other with power circuit module 5, and first drives the bird audio signal by source of sound input interface 31 couplings of output interface 44 with audio frequency processing circuit module 3.
Directed sound wave scarer of the present invention can be installed on the motion platforms such as box-type equipment that automobile or other power source pull, and forms orientable remote action, the motor-driven bird equipment that drives on a large scale.
As can be seen from the above description, the present invention has realized following technique effect:
Relevant issues at prior art, loudspeaker unit provided by the invention, loudspeaker arrangement and directed sound wave scarer have solved airport bird scaring equipment and all have been confined in the smaller sphere of action, can't implement the problem that remote orientation is driven to the birds on the whole airfield runway or the navigation channel of rising and falling, and then reach the effect of effectively driving bird at a distance.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. loudspeaker unit comprises:
Reflective radiator (11) comprises the reflective side walls (111) of the taper of opening wide towards the place ahead and the rear wall (112) that is connected described reflective side walls rear end, forms cavity (113) between described reflective side walls (111) and the described rear wall (112);
Loud speaker (14) is installed in the cavity (113) of described reflective radiator (11);
Preposition reflecting element (15) is arranged on the place aheads of described loud speaker (14).
2. loudspeaker unit according to claim 1 is characterized in that, described preposition reflecting element (15) is a reflector.
3. loudspeaker unit according to claim 2 is characterized in that, the open end of described reflector is towards the rear wall (112) of described reflective radiator, and and described rear wall (112) between preset distance is arranged.
4. loudspeaker unit according to claim 3 is characterized in that, the middle part of the rear wall of described reflective radiator (112) has the phase plug (112a) towards described loud speaker.
5. loudspeaker unit according to claim 4, it is characterized in that, described loudspeaker unit also comprises: annular fixing member (13), the footing (131) that described annular fixing member (13) comprises annular slab (132) and is arranged on described annular slab (132) one sides, described annular fixing member (13) is fixed on the rear wall (112) of described reflective radiator by footing (131), makes the described annular slab (132) and the rear wall (112) of described reflective radiator leave the space.
6. loudspeaker unit according to claim 5 is characterized in that, the height of described footing (131) is identical with the height of the phase plug (112a) of the rear wall (112) of described reflective radiator.
7. loudspeaker unit according to claim 1 is characterized in that, the reflective side walls of described reflective radiator (111) is the exponential type curved surface.
8. loudspeaker unit according to claim 1 is characterized in that, the horn mouth of described loud speaker is towards the rear wall (112) of described reflective radiator.
9. a loudspeaker arrangement is characterized in that, comprising:
Mounting base (12);
One or morely be arranged on the described mounting base (12), and arrange towards predetermined direction as each described loudspeaker unit among the claim 1-8.
10. loudspeaker arrangement according to claim 9 is characterized in that:
Described mounting base (12) is plate-like, has a plurality of installing holes, is separately installed with the described loudspeaker unit of a correspondence in each described installing hole, and each described loudspeaker unit is all arranged towards first side of described mounting base;
Described loudspeaker arrangement also comprises reticular lamina (16), is installed in first side of described mounting base (12), covers the place ahead of each described loudspeaker unit.
11. loudspeaker arrangement according to claim 10 is characterized in that:
Described installing hole on the described mounting base (12) is a through hole;
Described loudspeaker arrangement also comprises cover plate (18), is arranged on second side relative with described first side of described mounting base (12), covers the rear of each described loudspeaker unit, and the outer surface of described cover plate is provided with double handle (19).
12. loudspeaker arrangement according to claim 10 is characterized in that, what described reflective radiator (11) mutual spacing was less than or equal to the output of described loudspeaker arrangement drives the long wavelength's of bird audio signal 1/4th.
13. a directed sound wave scarer is characterized in that, comprising: each described loudspeaker arrangement (1) among the claim 9-12.
14. directed sound wave scarer according to claim 13 is characterized in that this device also comprises:
Source of sound supply circuit module (4) produces one or more first and drives the bird audio signal;
Audio frequency processing circuit module (3) is driven the bird audio signal to described first and is carried out signal processing, to obtain the audio data stream of first digital modulation;
Power Processing circuit module (2) is done to amplify and Filtering Processing to the audio data stream of described first digital modulation, and converts second to and drive the bird audio signal;
Power circuit module (5) links to each other with described audio frequency processing circuit module (3).
15. directed sound wave scarer according to claim 14 is characterized in that, described audio frequency processing circuit module (3) comprising:
AD converter is used for driving the bird audio signal to described first and carries out digital-to-analogue conversion, obtains the audio data stream of second digital modulation;
Audio frequency DSP, be used for the audio data stream waveform of described second digital modulation is carried out shaping, the audio data stream PCM conversion of signals of described second digital modulation is become pwm signal, finish setting simultaneously, to obtain the audio data stream of first digital modulation described pwm signal parameter;
Programmable logic device (CPLD) is used to obtain the audio data stream of described first digital modulation, and to the control of delaying time of the passage of the audio data stream of described first digital modulation.
16. directed sound wave scarer according to claim 14 is characterized in that, described Power Processing circuit module (2) comprising:
The MOSFET power tube carries out power amplification with the bird audio data stream of driving of described first digital modulation, to drive the bird audio data stream after amplifying;
Low pass filter carries out filtering to the bird audio data stream of driving after the described amplification, drives the bird audio signal to obtain second;
Described second drives the bird audio signal exports via described loudspeaker arrangement (1).
17. directed sound wave scarer according to claim 14 is characterized in that described source of sound supply circuit module (4) also comprises Audio storage unit, first in the described Audio storage unit driven the bird audio signal for prerecording or USB flash disk is imported immediately.
18., it is characterized in that described second to drive bird audio signal acoustic pressure be 160dB according to claim 14 or 16 described directed sound wave scarers, effectively to drive the bird distance and be 3000m, the institute frequency acoustic wave beam angle of pronouncing is less than or equal to 10 °.
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| CN201110059912.2A CN102098610B (en) | 2011-03-11 | 2011-03-11 | Loudspeaker unit, loudspeaker arrangement and directed sound wave scarer |
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| CN107147961A (en) * | 2017-05-25 | 2017-09-08 | 宁波东方电子有限公司 | A kind of high sound level acoustical generator and its manufacture method |
| CN108600908A (en) * | 2018-06-13 | 2018-09-28 | 清华大学 | Reflection-type air acoustic horn |
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| CN111567510A (en) * | 2020-04-28 | 2020-08-25 | 赵阳 | Net rod device |
| CN111567510B (en) * | 2020-04-28 | 2021-12-21 | 赵阳 | Net rod device |
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