CN106225583A - Back drop wave producer - Google Patents
Back drop wave producer Download PDFInfo
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- CN106225583A CN106225583A CN201610794226.2A CN201610794226A CN106225583A CN 106225583 A CN106225583 A CN 106225583A CN 201610794226 A CN201610794226 A CN 201610794226A CN 106225583 A CN106225583 A CN 106225583A
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- noise signal
- controlled switch
- noise
- power amplifier
- wave producer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H13/00—Means of attack or defence not otherwise provided for
- F41H13/0043—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target
- F41H13/0081—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target the high-energy beam being acoustic, e.g. sonic, infrasonic or ultrasonic
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Engineering & Computer Science (AREA)
- Amplifiers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a kind of back drop wave producer, including: single-chip microcomputer, noise maker, noise signal and the power amplifier being sequentially connected with；Wherein, single-chip microcomputer produces the noise signal of multiple waveforms for controlling noise maker；Noise signal is for synthesizing composite noise signal by the noise signal of the multiple waveforms received；Power amplifier exports the noise signal after amplifying after being amplified by the composite noise signal received.Solve in prior art by the present invention; the problem how producing the noise sound wave of high intensity; can effectively stop the wildcat operation of cracker, offender, terrorist, reach protection personnel, control large-scale crowd, anti-terrorism and the purpose of society's stability maintenance.
Description
Technical field
The present invention relates to Audiotechnica field, be specifically related to a kind of back drop wave producer.
Background technology
Signal generator is used to provide the electronic machine of waveshape signal needed for various measurement, is a kind of conventional signal
Source, can be widely applied to automatically control, the association area such as scientific experimentation and electronic circuit；When analyzing circuit, often it should be understood that
Relation between output signal and input signal, needs signal generator generation signal with excitation system, observes simultaneously and analyze
The system response to pumping signal；The application of current demand signal generator is increasingly wider, also the most steady to the frequency of signal generator
The frequency resolution of fixed degree, frequency range and output signal proposes the highest requirement, especially at the product of noise waves signal
In raw control, currently used signal generator can not meet demand.
Although noise has brought a lot of puzzlements, the technology how to abate the noise can be found everywhere, but special at some
Under fixed occasion, noise can also play favourable effect, such as utilize psychology that noise on human body causes and physiological interference with
Discomfort, force controlled people must cover ear, away from, hide or scatter, effectively stop cracker, offender, probably
It is afraid of the wildcat operation of molecule, plays the effect actively expelling or shortening effective crime time, reach protection personnel, control on a large scale
Crowd, anti-terrorism and the purpose of society's stability maintenance.
Summary of the invention
The invention provides a kind of back drop wave producer, at least to solve how prior art produces making an uproar of high intensity
The problem of several ripples.
An aspect according to embodiments of the present invention, it is provided that a kind of back drop wave producer, including: the list being sequentially connected with
Sheet machine, noise maker, noise signal and power amplifier；Wherein, described single-chip microcomputer is used for controlling described noise maker
Produce the noise signal of multiple waveforms；The noise signal synthesis of the described noise signal described multiple waveforms for receiving
For composite noise signal；The output after being amplified by the described composite noise signal received of described power amplifier is amplified
After noise signal.
Alternatively, described back drop wave producer also includes: booster, is connected to described power amplifier, is used for as institute
State power amplifier and voltage is provided.
Alternatively, the noise signal of described multiple waveforms includes square wave noise signal.
Alternatively, described composite noise signal includes sawtooth signal.
Alternatively, described noise maker includes: the first controlled switch, the second controlled switch, the 3rd controlled switch, the 4th
Controlled switch and speaker；Described speaker is connected between described first controlled switch and described second controlled switch, and,
Described speaker is connected between described first controlled switch and described 3rd controlled switch.
Alternatively, described first controlled switch, described second controlled switch, described 3rd controlled switch and the described 4th
At least one controlled switch in controlled switch includes metal-oxide-semiconductor.
Alternatively, the noise that described single-chip microcomputer controls described noise maker generation multiple waveforms by low and high level is believed
Number.
Alternatively, described back drop wave producer also includes: reserve battery, is connected to described power amplifier, be used for be
Described power amplifier provides electric energy.
Embodiment of the present invention technical scheme, has the advantage that
Embodiments provide a kind of back drop wave producer, including: the single-chip microcomputer, the noise that are sequentially connected with occur
Device, noise signal and power amplifier.Wherein, single-chip microcomputer produces the noise letter of multiple waveforms for controlling noise maker
Number, multi-channel noise signal can be produced by the control of single-chip microcomputer, the multiple ripple that noise signal will receive from multichannel
The noise signal of shape carries out synthesizing complicated wave form sound wave, the composite noise signal of complicated wave form that power amplifier will receive
Noise signal after output is amplified after being amplified.Solve in prior art, how to produce the asking of noise sound wave of high intensity
Topic, can effectively stop the wildcat operation of cracker, offender, terrorist, reaches protection personnel, controls on a large scale
Crowd, anti-terrorism and the purpose of society's stability maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a structured flowchart of back drop wave producer according to embodiments of the present invention；
Fig. 2 is another structured flowchart of back drop wave producer according to embodiments of the present invention；
Fig. 3 is noise maker circuit diagram according to embodiments of the present invention；
Fig. 4 is class AB power amplifier figure according to embodiments of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, it is also possible to
It is the connection of two element internals, can be wireless connections, it is also possible to be wired connection.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
If additionally, the most non-structure of technical characteristic involved in invention described below difference embodiment
Become conflict just can be combined with each other.
Embodiment 1
Providing a kind of back drop wave producer in the present embodiment, Fig. 1 is interference sound wave according to embodiments of the present invention
One structured flowchart of generator, as it is shown in figure 1, back drop wave producer includes:
Single-chip microcomputer 11, noise maker 12, noise signal 13 and the power amplifier 14 being sequentially connected with.Wherein, monolithic
Machine 11 produces the noise signal of multiple waveforms for controlling this noise maker 12, and noise signal 13 is for many by receiving
The noise signal planting waveform synthesizes composite noise signal, and power amplifier 14 is for carrying out the composite noise signal received
Noise signal after output is amplified after amplification.
Can produce multi-channel noise signal by the control of single-chip microcomputer, noise signal is many by receiving from multichannel
The noise signal of kind of waveform carries out synthesizing complicated wave form sound wave, the composite noise of complicated wave form that power amplifier will receive
Signal exports the noise signal after amplifying after being amplified.Compared to alarm of the prior art, imitation siren can only be sent
Sound, such sound simply repeats, only warning function, it is easy to adapt to；Existing alarm sound wave at most only has 90dB, intensity
Relatively low, it is not enough to affect the normal activity of human body；Existing alarm uses Linear Driving, and therefore its delivery efficiency is up to
78.5%, energy consumption conversion ratio is low, it is impossible to produce the sound wave of greater strength.Solve and how prior art produces making an uproar of high intensity
The problem of several ripples, can effectively stop the wildcat operation of cracker, offender, terrorist, reach protection personnel,
Control large-scale crowd, anti-terrorism and the purpose of society's stability maintenance.
As in figure 2 it is shown, Single-chip Controlling power amplifier produces the noise of various waveforms, booster produce 24-32V high pressure, carry
Supply power amplifier, drives speaker.Circuit theory: Single-chip Controlling power amplifier, utilizes the 4 passage square wave synthesis that 4 speakers produce
Alarm sound.
Mathematical principle: the Fourier space transforming function transformation function of square wave is:
F (t)=2A/pi* (sin (2*pi* (t+t0)/T+1/3*sin (3*2*pi* (t+t0)/T)+1/5*s in (5*2*
pi*(t+t0)/T)+……)；
Passage 1:
F1 (ta)=2A/pi* (sin (2*pi* (ta+t1)/T1+1/3*sin (3*2*pi* (ta+t1)/T1)+1/5*sin
(5*2*pi*(ta+t1)/T1)+……)；
Ta is: 1 passage lasts independent variable, and opening when reporting to the police is the 0th second；
T1 is: in the impulse hunting cycle of 1 passage square wave, native system is from 100Hz to 10KHz；
T1 is: the first phase of 1 passage waveform, and waveform, from the beginning of this time point was as 0 o'clock, typically saves this ginseng
Number, is to regard this parameter as " 0 "；
Passage 2:
F2 (tb)=2A/pi* (sin (2*pi* (tb+t2)/T12+1/3*sin (3*2*pi* (tb+t2)/T2)+1/5*
sin(5*2*pi*(tb+t2)/T2)+……)；
Tb is: 2 passages last independent variable, and opening when reporting to the police is the 0th second；
T2 is: in the impulse hunting cycle of 2 passage square waves, native system is from 100Hz to 10KHz；
T2 is: the first phase of 2 passage waveforms, and waveform, from the beginning of this time point was as 0 o'clock, typically saves this ginseng
Number, is to regard this parameter as " 0 "；
Passage 3:
F3 (tc)=2A/pi* (sin (2*pi* (tc+t3)/T3+1/3*sin (3*2*pi* (tc+t3)/T3)+1/5*sin
(5*2*pi*(tc+t3)/T3)+……)；
Tc is: 3 passages last independent variable, and opening when reporting to the police is the 0th second；
T3 is: in the impulse hunting cycle of 3 passage square waves, native system is from 100Hz to 10KHz；
T3 is: the first phase of 3 passage waveforms, and waveform, from the beginning of this time point was as 0 o'clock, typically saves this ginseng
Number, is to regard this parameter as " 0 "；
Passage 4:
F4 (td)=2A/pi* (sin (2*pi* (td+t4)/T4+1/3*sin (3*2*pi* (td+t4)/T4)+1/5*sin
(5*2*pi*(td+t4)/T4)+……)；
Td is: 4 passages last independent variable, and opening when reporting to the police is the 0th second；
T4 is: in the impulse hunting cycle of 4 passage square waves, native system is from 100Hz to 10KHz；
T4 is: the first phase of 4 passage waveforms, and waveform, from the beginning of this time point was as 0 o'clock, typically saves this ginseng
Number, is to regard this parameter as " 0 "；
After 4 passage synthesis, the waveform sending sound is:
Fall=F1 (ta)+F2 (tb)+F3 (tc)+F4 (td)=2A/pi* (sin (2*pi* (ta+t1)/T1+1/3*sin
(3*2*pi*(ta+t1)/T1)+1/5*sin(5*2*pi*(ta+t1)/T1)+……)+
2A/pi*(sin(2*pi*(tb+t2)/T12+1/3*sin(3*2*pi*(tb+t2)/T2)+1/5*s in(5*2*
pi*(tb+t2)/T2)+……)+
2A/pi*(sin(2*pi*(tc+t3)/T3+1/3*sin(3*2*pi*(tc+t3)/T3)+1/5*si n(5*2*
pi*(tc+t3)/T3)+……)+
2A/pi*(sin(2*pi*(td+t4)/T4+1/3*sin(3*2*pi*(td+t4)/T4)+1/5*si n(5*2*
pi*(td+t4)/T4)+……)。
Required sound waveform is just constituted through synthesis.
Software fingerboard carries Single Chip Microcomputer (SCM) program, as requested output pulse signal, and pulse signal regulates and controls drive circuit, then by driving
Dynamic drives buzzer produces sound.
Program in single-chip microcomputer is to calculate the high level (th) of this pulse, and the width of low level (tl) with us (microsecond) is
The time of unit, and drive GPIO port.
This alternative embodiment needs the pulse that output frequency changes, and frequency is changed to sawtooth waveforms.
Program is according to given initial frequency cycle ts, cut-off frequency cycle te, lasts ta from ts to te, initial duty
Ratio ds, cut-off dutycycle de, first phase t0, these parameter determinations.Obtain: th, tl；
It is now to determine following parameter according to step:
1. from ts to te, to carry out how many cycle n；
The most each cycle stepping period dt；
Because: under the cycle time from ts to te is:
ts
ts+dt
ts+2dt
ts+3dt
…
ts+ndt；
Then: ta (lasting, above-mentioned) is sum cycle time, for:
Ta=n*ts+n* (n+1) * dt/2；
Te=ts+n*dt；
Solving this equation is:
N=2*ta/ (ts+te)；
Dt=(te-ts)/n；
The most current frequency is:
Tc=ts+i*dt；(i=0 ... n)
Current duty cycle is:
Dtd=(de-ds)/n*i+ds；(i=0 ... n)
Then: the value of current low and high level can be calculated: for:
Th=tc*dtd；
Tl=tc-th；
Afterwards, single-chip microcomputer is according to the th calculated, and tl value controls GPIO port operation, controls power driving circuit and sends sound
Sound.Driven speaker by low and high level in turn, then produce different sound waves.
In one alternate embodiment, back drop wave producer also includes: booster, is connected to power amplifier, is used for
Voltage is provided for power amplifier.
The form of expression of the noise signal of multiple waveforms can include a variety of, is illustrated this below.One
In individual alternative embodiment, the noise signal of multiple waveforms can be square wave noise signal.
The form of expression of composite noise signal can also include a variety of, is illustrated this below.Can at one
Selecting in embodiment, above-mentioned composite noise signal can be sawtooth signal.
Above-mentioned noise maker can be realized by multiple circuit structure, in one alternate embodiment, and noise maker bag
Include: the first controlled switch, the second controlled switch, the 3rd controlled switch, the 4th controlled switch and speaker；This speaker is connected to
Between this first controlled switch and this second controlled switch, and, this speaker is connected to this first controlled switch and the 3rd
Between controlled switch.As it is shown on figure 3, hardware is by Single-chip Controlling 4 channels drive circuit, the multiple buzzers of control are driven to send sound
Sound, every passage is above-mentioned square wave, is complicated wave form sound wave after synthesis.
Every passage principle such as figure:
Vcc is to drive positive source；Gnd is power cathode；S1-S4 is controlled switch.
Principle illustrates: S1 and S2 opens simultaneously, S3, S4, and when simultaneously closing off, speaker speak polarity is upper just lower negative.S3
Open with S4, S1, S2 simultaneously, when simultaneously closing off, speaker speak polarity be upper negative under just.S1, S2 and S3 like this, S4 with
Certain frequency (using 1K-5KHz) alternately break-make, drives speaker, can produce sound.Certainly, S1, S2, and S3, S4 is not
Can simultaneously turn on, otherwise short circuit.Each single channel square wave sound above-mentioned can synthesize the sound of needs.
In one alternate embodiment, the first controlled switch, the second controlled switch, the 3rd controlled switch and the 4th are controlled
At least one controlled switch in switch includes metal-oxide-semiconductor.This alternative embodiment drive circuit uses metal-oxide-semiconductor switch driving circuit,
After taking the limit, delivery efficiency can reach 100%.
In one alternate embodiment, single-chip microcomputer controls the noise of noise maker generation multiple waveforms by low and high level
Signal.
This alternative embodiment has following features: 1. every passage is output as the square wave of sharp pounding, is added together, and vibrations are more
Strongly；2. every channel power efficiency is the highest, is 100%: owing to circuit is operated on off state after taking the limit, " non-opens i.e.
Close ", therefore minimum at the power controlling to consume on device, electric energy all exports to speaker, therefore ultrahigh in efficiency.And sine wave
Drive contrast at class AB power amplifier: when seeing Fig. 4 this kind of class AB power amplifier when sine wave output, drive pipe to have certain resistance,
To keep waveform, therefore to consume some energy, peak power output is 78.5%；Reality is lower.Alternative embodiment is then
By 4 passage square wave synthesis sines, therefore every channel efficiency can reach 100% (after taking the limit)；3. this alternative embodiment sound source
It is " the siren sound " of the specialty sent by Single-chip Controlling；It is different from noise and " white noise " of other invention types.
Control and power supply are combined on a path by existing alarm, do not have stand-by power supply to design, once power-off, and equipment is complete
Work completely without method.In order to ensure as back drop wave producer continued power, in one alternate embodiment, the generation of this interference sound wave
Device also includes: reserve battery, is connected to power amplifier, for providing electric energy for power amplifier.By this alternative embodiment
The reserve battery of design, once external power source power-off, can continue power supply by reserve battery, after recovering external power source, can be
Reserve battery charges.Circuit design has safety simultaneously, it is to avoid possible surge etc. cause device damage.
The present invention, by utilizing single-chip microcomputer built-in algorithms program, produces multichannel sawtooth square wave, and each passage is individually carried out
Filtering, Digital Signal Processing, amplification, after electroacoustic conversion, send the sound wave of characteristic frequency, first phase and amplitude, and multichannel sound wave is folded
After adding, synthesize special random change sound wave that frequency is continually changing in 1000～6000Hz, up to 125dB, such
It is uncomfortable that sound wave makes us body-sensing, thus drives the purpose of robber.The present invention, through test, can keep minimum in the 30 square meter interior spaces
110dB, the sound field of the highest 125dB, make us being in wherein for a long time, force its away from.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the reality in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware
Execute the form of example.And, the present invention can use at one or more computers wherein including computer usable program code
The upper computer program product implemented of usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of product.
The present invention is with reference to method, equipment (system) and the flow process of computer program according to embodiments of the present invention
Figure and/or block diagram describe.It should be understood that can the most first-class by computer program instructions flowchart and/or block diagram
Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
Instruction arrives the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce
A raw machine so that the instruction performed by the processor of computer or other programmable data processing device is produced for real
The device of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame now.
These computer program instructions may be alternatively stored in and computer or other programmable data processing device can be guided with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in this computer-readable memory produces and includes referring to
Make the manufacture of device, this command device realize at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function specified in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that at meter
Perform sequence of operations step on calculation machine or other programmable devices to produce computer implemented process, thus at computer or
The instruction performed on other programmable devices provides for realizing at one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function specified in individual square frame or multiple square frame.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (8)
1. a back drop wave producer, it is characterised in that including:
Single-chip microcomputer, noise maker, noise signal and the power amplifier being sequentially connected with；
Wherein, described single-chip microcomputer produces the noise signal of multiple waveforms for controlling described noise maker；Described noise synthesizes
Device is for synthesizing composite noise signal by the noise signal of the described multiple waveforms received；Described power amplifier is used for will
The described composite noise signal received exports the noise signal after amplifying after being amplified.
Back drop wave producer the most according to claim 1, it is characterised in that described back drop wave producer also includes:
Booster, is connected to described power amplifier, for providing voltage for described power amplifier.
Back drop wave producer the most according to claim 1, it is characterised in that the noise signal of described multiple waveforms includes
Square wave noise signal.
Back drop wave producer the most according to claim 1, it is characterised in that described composite noise signal includes sawtooth waveforms
Signal.
Back drop wave producer the most according to claim 1, it is characterised in that described noise maker includes:
First controlled switch, the second controlled switch, the 3rd controlled switch, the 4th controlled switch and speaker；Described speaker is even
It is connected between described first controlled switch and described second controlled switch, and, described speaker is connected to described first controlled
Between switch and described 3rd controlled switch.
Back drop wave producer the most according to claim 5, it is characterised in that described first controlled switch, described second
At least one controlled switch in controlled switch, described 3rd controlled switch and described 4th controlled switch includes metal-oxide-semiconductor.
Back drop wave producer the most according to claim 1, it is characterised in that described single-chip microcomputer is controlled by low and high level
Described noise maker produces the noise signal of multiple waveforms.
8. according to described back drop wave producer arbitrary in claim 1 to 7, it is characterised in that described interference sound wave occurs
Device also includes:
Reserve battery, is connected to described power amplifier, for providing electric energy for described power amplifier.
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| CN201610794226.2A CN106225583B (en) | 2016-08-31 | 2016-08-31 | Interfere sonic generator |
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|---|---|---|---|
| CN201610794226.2A CN106225583B (en) | 2016-08-31 | 2016-08-31 | Interfere sonic generator |
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| CN106225583B CN106225583B (en) | 2019-03-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108513700A (en) * | 2017-04-07 | 2018-09-07 | 深圳市大疆创新科技有限公司 | Signal interference circuit and equipment |
| US10999001B2 (en) | 2017-04-07 | 2021-05-04 | SZ DJI Technology Co., Ltd. | Jamming device and jamming method |
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| Publication number | Publication date |
|---|---|
| CN106225583B (en) | 2019-03-01 |
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