CN102022954A - Ultrasonic crowd disperser - Google Patents
Ultrasonic crowd disperser Download PDFInfo
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- CN102022954A CN102022954A CN2009101768309A CN200910176830A CN102022954A CN 102022954 A CN102022954 A CN 102022954A CN 2009101768309 A CN2009101768309 A CN 2009101768309A CN 200910176830 A CN200910176830 A CN 200910176830A CN 102022954 A CN102022954 A CN 102022954A
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- piezoelectric
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- crowd
- piezoelectric unit
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- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic crowd disperser, which comprises an ultrasonic heat exchanger and a piezoelectric driving circuit. The disperser of the invention can aim at and disperse the crowd people from a distance away from 5 to 15 meters by modulating the phase of sound wave through a phase shifter based on a piezoelectric ceramic high-power ultrasonic emitting unit, therefore providing a convenient and efficient method of dealing with crowd conflict to the police.
Description
Technical field
The present invention relates to the ultrasonic police of a kind of uprising usefulness and use device, refer specifically to a kind of ultrasonic crowd and disperse device.
Background technology
In recent years, rapid development and development along with China's economy, though it is plentiful that people's lives are stablized day by day, but variation along with the international current political situation, particularly extreme religion doctrine and terrorism spread the whole world, causes China Falun Gong to occur and practise austerities malignant events such as demonstrate, burn oneself to death in Tian An-men of personnel, the riot in Tibet, Xinjiang 7.5 incidents of violence.Incident has indicated in a period of time from now on that to us the main and difficult work of the police agency of country is the Mass disturbance that reply has higher menace on a small scale, and they have following characteristics:
1, less saboteur mixes with a large amount of masses ignorant of the fact, is difficult to distinguish;
2, the lawless person has certain attacking ability, even some slight arms are arranged;
3, medium intervention both at home and abroad is more, and the event handling difficulty is very big;
4, conventional weapon usually have permanent lethal, not only competent complex environment like this, and usually cause the censure of medium.
Under such background, how to disperse the common people that converge, how to be that the ruffian loses resistivity, how to reduce possible permanent damage, the censure that how to reduce medium was once spent that these just become the power of development new ideas police equipment.
Summary of the invention
The object of the present invention is to provide a kind of ultrasonic crowd to disperse device, it can realize effect is dispersed in the generation of the crowd in the sighted direction 5-15 rice annex, and assembling a crowd to conflict for police replies provides a kind of means easily and effectively.
In order to achieve the above object, the present invention is realized by following technical scheme.
A kind of ultrasonic crowd disperses device, comprises ultrasonic transducer and piezoelectric driving circuit, it is characterized in that:
Described ultrasonic transducer comprises piezoelectric unit, transducer unit and luffing bar, piezoelectric unit adopts lead zirconate titanate as piezoelectric, transducer unit comprises front shroud and back shroud, folder is established piezoelectric unit and piezoelectric unit electrode between front shroud and back shroud, apply the vibration that driving voltage drives the piezoelectric unit electrode on the piezoelectric unit electrode, the input of luffing bar partly connects the front shroud of transducer unit, and the input of luffing bar partly connects output partly;
Described piezoelectric driving circuit utilizes frequency of signal generator to connect controlled switch, and controlled switch connects high power large-current electric potential source, the break-make of frequency of signal generator control controlled switch, and controlled switch connects phase shifter, and phase shifter connects piezoelectric unit.
Beneficial effect of the present invention is, the present invention is based on the high-power ultrasonic transmitter unit of piezoelectric ceramics, by the phase modulation of phase shifter to sound wave, realize effect is dispersed in the generation of the crowd in the sighted direction 5-15 rice annex, assembling a crowd to conflict for police's reply provides a kind of means easily and effectively.Noise is the sound that arrives that people's ear can be listened, and utilizes the high power noise that the people is felt bad, and reaches the purpose that disperses a crowd.If provo stops up ear, this device will lose the effect of dispersing.Ultrasonic is the unheard sound wave of a kind of people's ear, and high-power ultrasonic can make the not dark chemical feeling of people to feeling bad, and reaches the effect of dispersing, and provo is difficult to take counter-measure.Can do not heard that owing to ultrasonic when the police used this equipment to disperse provo, external reporter was difficult to find evidence to attack the human rights issue of China, can avoid external anti-china molecule to interfere China's internal affairs by people's ear.
Description of drawings
Fig. 1 is a piezoelectric driving circuit schematic diagram of the present invention
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is done to describe in further detail.
A kind of ultrasonic crowd as shown in Figure 1 disperses device, comprises ultrasonic transducer and piezoelectric driving circuit.Please in conjunction with shown in Figure 1, ultrasonic transducer of the present invention comprises piezoelectric unit, transducer unit and luffing bar, piezoelectric unit adopts lead zirconate titanate as piezoelectric, transducer unit comprises front shroud and back shroud, folder is established the electrode one and the electrode two of piezoelectric unit and piezoelectric unit between front shroud and back shroud, applies electrode one and electrode two vibrations that driving voltage drives piezoelectric unit on electrode one and the electrode two.The input of luffing bar partly connects the front shroud of transducer unit, and the input of luffing bar partly connects output partly.Utilize the higher sandwich PZT (piezoelectric transducer) structure of conversion efficiency to design, by the design and the coupling of front shroud and back shroud, the frequency annex generation resonance work at needs obtains bigger acoustical signal output on the front shroud top.Utilize the luffing bar that the vibration of transducer output is amplified, realize ultrasonic emission,, make output amplitude improve one more than the magnitude, reach about 100um by the conversion of importation to output.
Please in conjunction with shown in Figure 1, piezoelectric driving circuit of the present invention connects piezoelectric unit, utilize frequency of signal generator to connect controlled switch, controlled switch connects high power large-current electric potential source, the break-make of frequency of signal generator control controlled switch, thus make high power large-current electric potential source process phase shifter with the rear drive piezoelectric ceramics.Controlled switch of the present invention connects phase shifter, and phase shifter connects piezoelectric unit.The present invention drives in the system ultrasonic, uses the transducer architecture of planar array version, controls respectively by the ultrasound unit to diverse location, realizes that ultrasonic synthetic direction control, power distribute and controls.It can realize effect is dispersed in the generation of the crowd in the sighted direction 5-15 rice annex, and assembling a crowd to conflict for police replies provides a kind of means easily and effectively.
Claims (1)
1. a ultrasonic crowd disperses device, comprises ultrasonic transducer and piezoelectric driving circuit, it is characterized in that:
Described ultrasonic transducer comprises piezoelectric unit, transducer unit and luffing bar, piezoelectric unit adopts lead zirconate titanate as piezoelectric, transducer unit comprises front shroud and back shroud, folder is established piezoelectric unit and piezoelectric unit electrode between front shroud and back shroud, apply the vibration that driving voltage drives the piezoelectric unit electrode on the piezoelectric unit electrode, the input of luffing bar partly connects the front shroud of transducer unit, and the input of luffing bar partly connects output partly;
Described piezoelectric driving circuit utilizes frequency of signal generator to connect controlled switch, and controlled switch connects high power large-current electric potential source, the break-make of frequency of signal generator control controlled switch, and controlled switch connects phase shifter, and phase shifter connects piezoelectric unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768309A CN102022954A (en) | 2009-09-22 | 2009-09-22 | Ultrasonic crowd disperser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768309A CN102022954A (en) | 2009-09-22 | 2009-09-22 | Ultrasonic crowd disperser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022954A true CN102022954A (en) | 2011-04-20 |
Family
ID=43864543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101768309A Pending CN102022954A (en) | 2009-09-22 | 2009-09-22 | Ultrasonic crowd disperser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022954A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767991A (en) * | 2012-07-30 | 2012-11-07 | 王路 | Sound wave weapon |
| CN106767176A (en) * | 2017-02-07 | 2017-05-31 | 广州市声讯电子科技有限公司 | Acousto-optic orients disperser as integral type |
| CN107202517A (en) * | 2017-06-27 | 2017-09-26 | 西安欣业科技发展有限公司 | Directional ultrasonic disperser |
| CN110887411A (en) * | 2019-12-02 | 2020-03-17 | 北京九九之声科技有限公司 | High-frequency dispersing device with nano driver |
-
2009
- 2009-09-22 CN CN2009101768309A patent/CN102022954A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767991A (en) * | 2012-07-30 | 2012-11-07 | 王路 | Sound wave weapon |
| CN106767176A (en) * | 2017-02-07 | 2017-05-31 | 广州市声讯电子科技有限公司 | Acousto-optic orients disperser as integral type |
| CN107202517A (en) * | 2017-06-27 | 2017-09-26 | 西安欣业科技发展有限公司 | Directional ultrasonic disperser |
| CN107202517B (en) * | 2017-06-27 | 2021-04-02 | 西安欣业科技发展有限公司 | Directional ultrasonic wave dispersing device |
| CN110887411A (en) * | 2019-12-02 | 2020-03-17 | 北京九九之声科技有限公司 | High-frequency dispersing device with nano driver |
| CN110887411B (en) * | 2019-12-02 | 2021-09-17 | 北京九九之声科技有限公司 | High-frequency dispersing device with nano driver |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |