CN104640027A - Directional sound wave emission system - Google Patents
Directional sound wave emission system Download PDFInfo
- Publication number
- CN104640027A CN104640027A CN201510078685.6A CN201510078685A CN104640027A CN 104640027 A CN104640027 A CN 104640027A CN 201510078685 A CN201510078685 A CN 201510078685A CN 104640027 A CN104640027 A CN 104640027A
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- amplifier
- power
- sound wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a directional sound wave emission system, which comprises a power supply, a signal processing and controlling circuit, a power amplifier and a loudspeaker array, wherein the power supply supplies power to the signal processing and controlling circuit and the power amplifier; a signal source is transmitted to the power amplifier after being processed by the signal processing and controlling circuit, and is emitted by the loudspeaker array. The signal processing and controlling circuit has an ultra-wide voltage input range, output voltage is basically stable, the loudspeaker can be prevented from being damaged due to overhigh voltage to a maximum degree, a filter circuit can be used for filtering a frequency part which has the great harm on the loudspeaker to guarantee the safety of the loudspeaker, and the mute control of the system can be realized since the control circuit is additionally arranged.
Description
Technical field
The present invention relates to directed acoustic emission field, be specifically related to a kind of directed sound wave emission system.
Background technology
Directed sound wave disperser can be dispersed by the mode of high sound intensity sound specific objective or crowd or warn on comparatively remote, also can make its temporary anergy by the sound of higher loudness.
Directed sound wave disperser can not be propagated with sphere form as conventional horn, the intensity of sound is finally caused to increase along with distance and reduce rapidly, but as fan-shaped, sound can be focused on direction long-distance communications, and enough acoustic pressures (acoustic pressure at 1m place can reach 145dB) can be kept in coverage, and be greater than 85% at the language identification degree at 1000m place.Thus can realize propagandaing directed to communicate at a distance, warn, deterring function.There is the features such as orientation, high sound intensity, high definition.
Can its subsidiary MP3 player and hand microphone be passed through, play the command context required for you.Be no matter for search, rescue, patrol, or for special policeman's operation (comprise that enforcement crowd dredges, traffic and export control, block, establish card, detain), this cover movable fixture can be used for enhancing public safety.In remote, high strength voice output, low energy consumption, high definition, safe ready etc., there is very high use value.
Wherein, directed sound wave emission system is the core of directed sound wave disperser, the result of use quality of it and equipment and useful life closely bound up.
, mainly there is following defect in existing directed sound wave emission system: because the design problem of signal transacting and control circuit, overtension very easily makes speaker damage.If 48V bridge joint power amplifier maximum voltage is about 94V, the maximum defect of this voltage is when propagandaing directed to communicate, volume is opened greatly a bit a little, is very easy to produce Xiao Bo distortion, because when propagandaing directed to communicate, transient voltage and power consumption larger, but rated power is little, produce Xiao Bo distortion, a large amount of DC component enters loud speaker, loud speaker heating increases greatly, easily damages loud speaker.
Therefore, we need to design a kind of system avoiding speaker damage, increase useful life and the result of use of equipment.
Summary of the invention
For solving the problems of the technologies described above, we propose a kind of directed sound wave emission system, by high sound pressure level strong sound wave directional transmissions, reach orientation and disperse and transmit and the object of controlling functions with remote speech.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of directed sound wave emission system, comprise power supply, signal transacting and control circuit, power amplifier and loudspeaker array, described power supply is that described signal transacting and control circuit and described power amplifier are powered, signal source passes to described power amplifier after described signal transacting and control circuit process, then launches through loudspeaker array.
Preferably; described power supply comprises soft start protective circuit, high-power booster power module and small-power voltage dropping power supply module; described high-power booster power module is that described power amplifier is powered, and described small-power voltage dropping power supply module is that described signal transacting and control circuit are powered.
Preferably, described signal transacting and control circuit comprise the transmitter circuit and player circuit that microphone apparatus, player device, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit, final stage gain adjustment circuit and muting control circuit form
Microphone apparatus comprises transmitter and pre-amplifier one; Player device comprises player and pre-amplifier two;
Transmitter circuit comprises the transmitter, pre-amplifier one, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Player circuit comprises the player, pre-amplifier two, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Described transmitter realizes the conversion between microphone apparatus and player circuit by the PTT button on it;
Described muting control circuit is located between described filter circuit and described enhancement mode gain control circuit.
Preferably, described power amplifier is to promote the military project class large power amplifier that 4-6 BMS drives loud speaker.
Preferably, speaker protection circuit is provided with between described power amplifier and described loudspeaker array.
Preferably, described loudspeaker array is that multiple loud speaker composes in parallel.
Compared with prior art, the present invention has the following advantages:
Signal transacting in the present invention and control circuit have super wide voltage input range, and output voltage is basicly stable, and loud speaker can be protected to greatest extent can not to damage because of overtension; Filter circuit filtering can endanger larger frequency-portions to loud speaker, ensures the safety of loud speaker; The quiet control of interpolation feasible system of muting control circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only one embodiment of the present of invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to this accompanying drawing.
Fig. 1 is the theory diagram of a kind of directed sound wave emission system disclosed in the embodiment of the present invention 1;
Fig. 2 is the power principle block diagram in Fig. 1;
Fig. 3 is signal transacting in Fig. 1 and control circuit theory diagram;
Fig. 4 is the theory diagram that the power amplifier in Fig. 1 is connected with loudspeaker array.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only one embodiment of the invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with embodiment and embodiment, the present invention is further detailed explanation.
Embodiment 1.
As shown in Figure 1, a kind of directed sound wave emission system, comprise power supply, signal transacting and control circuit, power amplifier and loudspeaker array, described power supply is that described signal transacting and control circuit and described power amplifier are powered, signal source passes to described power amplifier after described signal transacting and control circuit process, then launches through loudspeaker array.
As shown in Figure 2; described power supply comprises soft start protective circuit, high-power booster power module and small-power voltage dropping power supply module; described high-power booster power module is that described power amplifier is powered, and described small-power voltage dropping power supply module is that described signal transacting and control circuit are powered.
As shown in Figure 3, described signal transacting and control circuit comprise the transmitter circuit and player circuit that microphone apparatus, player device, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit, final stage gain adjustment circuit and muting control circuit form
Microphone apparatus comprises transmitter and pre-amplifier one; Player device comprises player and pre-amplifier two;
Transmitter circuit comprises the transmitter, pre-amplifier one, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Player circuit comprises the player, pre-amplifier two, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Described muting control circuit is located between described filter circuit and described enhancement mode gain control circuit;
Described transmitter realizes the conversion between microphone apparatus and player circuit by the PTT button on it.
The sharpest edges of this circuit to protect loud speaker can not damage because of overtension to greatest extent, and maximum feature has super wide voltage input range, and output voltage is basicly stable, and change is little, and index is as follows:
Input voltage range: 100mV-10V;
Output voltage range: 2V-2.5V.
Input voltage maximum and minimum value differ 100 times, and output voltage only differs 1.25 times, can stop like this to cause the superpressure of loud speaker to damage, to the protection that loud speaker is best because of selected varying in size of audio signal.
Transmitter adopts hand-hold type SHURE transmitter, the switching between transmitter and player is realized by the PTT button on transmitter, transmitter is switched to the moment of player, PTT button control buffer start circuit, realize player plays signal by the large buffer starting of little gradual change, make power amplifier and loud speaker from impact.
The frequency content that filter circuit filtering is larger to loud speaker harm, ensures the safety of loud speaker.
When player stops broadcasting or transmitter acknowledge(ment) signal is very little, mute circuit work, the quiet control of the system that realizes.
As shown in Figure 4, described power amplifier is to promote the military project class large power amplifier that 4-6 BMS drives loud speaker.Speaker protection circuit is provided with between described power amplifier and described loudspeaker array.Described loudspeaker array is that multiple loud speaker (in Fig. 4 not 4) composes in parallel.
When voltage be ± 75V time, stable Maximum Power Output reaches 2000W, and pure resistance load capacity is low to moderate 2 ohm, and the BMS that easily can promote 48 ohm drives loud speaker, maximumly can promote 6 BMS and drives loud speakers.
When choosing BMS-4592ND type and driving loud speaker, its rated power is 150W, peak power 1000W, and its maximum drive voltage peak value is 90V, moment maximum drive voltage peak value 180V.In order to the safety of loud speaker.Choose ± 60V as supply power voltage, continue driving voltage regulate be no more than 80V.
Several loud speaker composition array, in order to realize voice directional spreading, driving the signal phase difference of each loud speaker to be preferably zero, adopting a power amplifier to promote multiple loud speaker, just can do large this point.If adopt a power amplifier to push away a loud speaker, how many loud speakers are had just to need how many power amplifiers, the phase difference that may exist between power amplifier makes the signal promoting each loud speaker inconsistent, be unfavorable for the Wave beam forming of strong acoustic array, therefore adopt High-power amplifier to promote multiple loud speaker and there is clear superiority, even if number of loudspeakers is many, have to adopt a more than High-power amplifier, carry out phase control and be also easy to many.
So drive scheme best in the present invention adopts High-power amplifier to promote many loud speakers, to ensure the voltage-phase consistency driving every loud speaker, obtains maximum sound pressure level.
Compared with prior art, the present invention has the following advantages:
Signal transacting in the present invention and control circuit have super wide voltage input range, and output voltage is basicly stable, and loud speaker can be protected to greatest extent can not to damage because of overtension; Filter circuit filtering can endanger larger frequency-portions to loud speaker, ensures the safety of loud speaker; The quiet control of interpolation feasible system of muting control circuit.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. a directed sound wave emission system, it is characterized in that, comprise power supply, signal transacting and control circuit, power amplifier and loudspeaker array, described power supply is that described signal transacting and control circuit and described power amplifier are powered, signal source passes to described power amplifier after described signal transacting and control circuit process, then launches through loudspeaker array.
2. the directed sound wave emission system of one according to claim 1; it is characterized in that; described power supply comprises soft start protective circuit, high-power booster power module and small-power voltage dropping power supply module; described high-power booster power module is that described power amplifier is powered, and described small-power voltage dropping power supply module is that described signal transacting and control circuit are powered.
3. the directed sound wave emission system of one according to claim 1 and 2, it is characterized in that, described signal transacting and control circuit comprise the transmitter circuit and player circuit that microphone apparatus, player device, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit, final stage gain adjustment circuit and muting control circuit form
Microphone apparatus comprises transmitter and pre-amplifier one; Player device comprises player and pre-amplifier two;
Transmitter circuit comprises the transmitter, pre-amplifier one, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Player circuit comprises the player, pre-amplifier two, commutation circuit, filter circuit, enhancement mode gain control circuit, buffer start circuit, volume control circuit and the final stage gain adjustment circuit that are connected in turn;
Described transmitter realizes the conversion between microphone apparatus and player circuit by the PTT button on it;
Described muting control circuit is located between described filter circuit and described enhancement mode gain control circuit.
4. the directed sound wave emission system of one according to claim 3, is characterized in that, described power amplifier is to promote the military project class large power amplifier that 4-6 BMS drives loud speaker.
5. the directed sound wave emission system of one according to claim 4, is characterized in that, is provided with speaker protection circuit between described power amplifier and described loudspeaker array.
6. the directed sound wave emission system of the one according to claim 4 or 5, it is characterized in that, described loudspeaker array is that multiple loud speaker composes in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078685.6A CN104640027A (en) | 2015-02-11 | 2015-02-11 | Directional sound wave emission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078685.6A CN104640027A (en) | 2015-02-11 | 2015-02-11 | Directional sound wave emission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104640027A true CN104640027A (en) | 2015-05-20 |
Family
ID=53218253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510078685.6A Pending CN104640027A (en) | 2015-02-11 | 2015-02-11 | Directional sound wave emission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104640027A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451146A (en) * | 2015-11-18 | 2016-03-30 | 成都旭光光电技术有限责任公司 | Sound wave rejection instrument |
| CN110087169A (en) * | 2019-06-03 | 2019-08-02 | 北京中安航信科技有限公司 | A kind of orientation sound wave disperser |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860755A (en) * | 1972-03-09 | 1975-01-14 | Wayne L Kimbell | Novel portable amplifier and speaker |
| CN101183482A (en) * | 2007-12-10 | 2008-05-21 | 浙江大学 | Vehicle intelligent refreshment safety device and monitoring alarm method |
| CN101540942A (en) * | 2008-03-18 | 2009-09-23 | 桦勋有限公司 | Micro sound system |
| CN102098610A (en) * | 2011-03-11 | 2011-06-15 | 湖南继善高科技有限公司 | Loudspeaker unit, loudspeaking device and orientated sound wave bird driving device |
| CN103094883A (en) * | 2013-01-24 | 2013-05-08 | 深圳市英威腾电气股份有限公司 | Intrinsic safety type power circuit and device with intrinsic safety type power circuit |
-
2015
- 2015-02-11 CN CN201510078685.6A patent/CN104640027A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860755A (en) * | 1972-03-09 | 1975-01-14 | Wayne L Kimbell | Novel portable amplifier and speaker |
| CN101183482A (en) * | 2007-12-10 | 2008-05-21 | 浙江大学 | Vehicle intelligent refreshment safety device and monitoring alarm method |
| CN101540942A (en) * | 2008-03-18 | 2009-09-23 | 桦勋有限公司 | Micro sound system |
| CN102098610A (en) * | 2011-03-11 | 2011-06-15 | 湖南继善高科技有限公司 | Loudspeaker unit, loudspeaking device and orientated sound wave bird driving device |
| CN103094883A (en) * | 2013-01-24 | 2013-05-08 | 深圳市英威腾电气股份有限公司 | Intrinsic safety type power circuit and device with intrinsic safety type power circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451146A (en) * | 2015-11-18 | 2016-03-30 | 成都旭光光电技术有限责任公司 | Sound wave rejection instrument |
| CN110087169A (en) * | 2019-06-03 | 2019-08-02 | 北京中安航信科技有限公司 | A kind of orientation sound wave disperser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205305067U (en) | Wireless active noise reduction earphone | |
| JP5065982B2 (en) | Audio amplifier | |
| WO2006068774A3 (en) | In-ear monitor with hybrid diaphragm and armature design | |
| CN104935742A (en) | Mobile communication terminal and method for improving tone quality thereof under telephone receiver mode | |
| CN104640027A (en) | Directional sound wave emission system | |
| CN105681948A (en) | System and method for improving voice quality of mobile terminal in receiver mode | |
| SE531023C2 (en) | Listening System | |
| WO2016032400A1 (en) | An amplifier circuit for a parametric transducer and a related audio device | |
| CN102118668B (en) | Loudspeaker system and loudspeaker driving circuit | |
| CN204681595U (en) | Sonification system and apply the mobile communication equipment of described sonification system | |
| CN202310066U (en) | Low-frequency denoising control device for denoising earphone | |
| CN101594565A (en) | The integrated drive electronics of multifunctional electrical sound generation device | |
| CN203261475U (en) | Super-high pitch loudspeaker with improved high-frequency bandwidth and sensitivity | |
| TWI442786B (en) | Speaker system and speaker amplifier circuit | |
| CN106170114A (en) | Control method, device and the audio-frequence player device of a kind of audio frequency output | |
| CN207399470U (en) | A kind of multifunction blue tooth Mobile loudspeaker box | |
| CN204350079U (en) | A kind of GSM-R hand-held station with audio frequency processing capacity | |
| CN201928436U (en) | Portable wireless power amplifier | |
| CN203840511U (en) | Audio power amplification circuit | |
| CN102065364B (en) | portable wireless power amplifier | |
| CN206894707U (en) | A kind of mining mobile phone | |
| CN105246017A (en) | Audio digital signal processor and system | |
| CN104902357A (en) | Portable megaphone | |
| CN103139686A (en) | Sound system circuit board | |
| CN204795545U (en) | Prison listening case with AESEBU input is set for and is controlled sound channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |