CN107204823A - A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping - Google Patents
A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping Download PDFInfo
- Publication number
- CN107204823A CN107204823A CN201710406866.6A CN201710406866A CN107204823A CN 107204823 A CN107204823 A CN 107204823A CN 201710406866 A CN201710406866 A CN 201710406866A CN 107204823 A CN107204823 A CN 107204823A
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- mobile phone
- interference signal
- interference
- acoustic
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- 238000002604 ultrasonography Methods 0.000 claims abstract description 31
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 5
- 238000012935 Averaging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Abstract
A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping, described device includes：Pallet container (101), interference signal generation module (105), power amplifier module (106) and ultrasound emission module (107)；The pallet container (101), which is used to place, needs disturbed mobile phone (103)；It is internal that the direction of the launch of the ultrasound emission module (107) points to pallet container (101)；The interference signal generation module (105) is used to produce interference signal and is supplied to power amplifier module (106)；Interference signal is amplified and provided to ultrasound emission module (107) and launched by the power amplifier module (106).Mobile phone recording and the acoustic interference device eavesdropped proposed by the present invention taken precautions against is by way of launching acoustic interference signal, directly the microphone of mobile phone is set to fail, other acoustic informations in addition to interference signal can not be received, have prevented the possibility of mobile phone recording, eavesdropping from source, it is ensured that information security.
Description
Technical field
The present invention relates to take precautions against recording and eavesdropping field, the acoustic interference of the more particularly to a kind of recording of strick precaution mobile phone and eavesdropping
Device.
Background technology
With the progress and the decline of production cost of science and technology, the popularity rate more and more higher of mobile phone.According to national departments concerned
Statistics, China mobile user is more than 1,200,000,000, and wherein smart phone user is more than 70%.Smart mobile phone collection conventional mobile phone, recording
The functions such as machine, palm PC greatly facilitate the work and life of user in one.At the same time, also it is all kinds of eavesdroppings, copies illegally
Opportunity is provided Deng activity, safe and secret to information such as state secret, business secret and individual privacies brings greatly hidden
Suffer from.Mobile phone the different technologies aspects such as application software, communication technology framework, operating system and chip may be stolen secret information personnel control
System, not only can be in not jingle bell, also without being changed into talking state by holding state in the case of any display, so that by surrounding
Sound send, or even in off-mode, ambient sound can also be received using microphone, and transmit it out or enter
Row recording.Therefore how to take precautions against and eavesdropped, recorded as a urgent problem using mobile phone.
Main solution includes using the secret mobile phone customized, electromagnetic shielding interference, removes battery of mobile phone, forbids at present
Bring mobile phone into secrecy place and mobile phone is stored in the medium scheme of blimp.The secret mobile phone of customization is using special chip and specially
It is safer relative to commercial chip and operating system reliable with operating system, but not only constrain user personalized to mobile phone
With the demand of software generalization, it is and with high costs, it is impossible to which that large-scale promotion is used.Electromagnetic shielding interference can not solve mobile phone
The problem of " only recording, do not send ", the person of stealing secret information can obtain secret information by recording substance.Remove battery of mobile phone, secrecy place
Inside forbid the method for carrying with mobile phone to deprive the right that user uses mobile phone, made troubles to user job, and system
It is difficult to be strictly observed.Mobile phone is put into blimp can avoid mobile phone recording, eavesdropping ambient sound, but because the incoming call of mobile phone
The tinkle of bells etc. is also by blimp shielding, it is necessary to which other additional incoming call induction devices notify user of incoming call, and user also can not be direct
The mobile phone in blimp is operated, therefore very big inconvenience is brought to normal use of mobile phone.
The content of the invention
It is an object of the invention to overcome to lack in the prior art to facilitate the feasible interference for preventing mobile phone from recording and eavesdropping
There is provided a kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping for the defect of device.
To achieve these goals, the invention provides a kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping, institute
Stating device includes：Pallet container 101, interference signal generation module 105, power amplifier module 106 and ultrasound emission module 107；
The pallet container 101, which is used to place, needs disturbed mobile phone 103；The direction of the launch of the ultrasound emission module 107 is pointed to
Inside pallet container 101；The interference signal generation module 105 is used to produce interference signal and is supplied to power amplifier module
106；Interference signal is amplified and provided to ultrasound emission module 107 and launched by the power amplifier module 106.
It is preferred that, described device also includes power supply module 104, for providing electric energy for other modules in device.
It is preferred that, the ultrasound emission module 107 is made up of M ultrasound emission submodule, wherein, M >=1；Each ultrasound
It is the array that N number of ultrasonic transducer is constituted to launch submodule, wherein, N >=1.
It is preferred that, the ultrasound emission module 107 is fixed on the wallboard 102 of pallet container 101 or/and bottom plate, described
Wallboard 102 is made up of hard material.
It is preferred that, the interference signal generation module 105 also includes Man Machine Interface, and user sets dry by the interface
Disturb signal type.
It is preferred that, the interference signal generation module 105 also includes audio input interface, for inputting external audio
Interference signal.
It is preferred that, the interference signal generation module 105 also includes internal memory, for storing built-in audio interference letter
Number.
It is preferred that, the interference signal type that the interference signal generation module 105 is generated is：
Unifrequency acoustic jamming signal, interference signal is the signal that frequency is f, meets f >=16kHz；
Multi-frequency acoustic jamming signal, interference signal is that frequency is f1, f2…fnN Signal averaging, wherein fi≥16kHz
I=1,2 ... n；
Frequency sweep acoustic jamming signal, interference signal is upper limiting frequency fh, lower frequency limit flSwept-frequency signal, wherein fl≥
16kHz, fh>=16kHz and fl＜ fh, sweep method is frequency fhTo flDownward frequency sweep or frequency f from high to lowlTo fhFrom low
To high frequency sweep upwards；Or
The ultrasonic interference signal of voice modulation, will be external using single-sideband amplitude modulation or double-sideband amplitude modulation mode
Audio disturbances signal or built-in audio interference signal are modulated in ultrasonic interference signal, form the ultrasound interference letter of voice modulation
Number.
It is preferred that, the frequency band range of the external audio disturbances signal and built-in audio interference signal is 20Hz~20kHz,
Including：Noise, voice and music etc..
The advantage of the invention is that：
1st, the acoustic interference device proposed by the present invention for taking precautions against mobile phone recording and eavesdropping is by launching acoustic interference signal
Mode, directly makes the microphone of mobile phone fail, it is impossible to receive other acoustic informations in addition to interference signal, hand has been prevented from source
Machine recording, the possibility of eavesdropping, it is ensured that information security.
2nd, human ear audible is not produced when the acoustic interference device proposed by the present invention taken precautions against mobile phone recording and eavesdropped works
Sound, on work, lives without influence.
3rd, the acoustic interference device proposed by the present invention taken precautions against mobile phone recording and eavesdropped is not related to the transmitting of electromagnetic wave signal
And receive, on the normal works of other electronic equipments without influence.
4th, when the acoustic interference device proposed by the present invention taken precautions against mobile phone recording and eavesdropped works, mobile phone only need to be put into support
It can be achieved to take precautions against recording, eavesdropping in disk container 101, while the loudspeaker of the mobile phone, screen display, touch-screen and keyboard all may be used
Normal work, mobile phone is except recording, the incoming call jingle bell in addition to phonetic entry, caller identification, transmitting-receiving short message and online etc. other whole work(
It can normally use, greatly facilitate user's routine use.
5th, the acoustic interference device proposed by the invention taken precautions against mobile phone recording and eavesdropped has taken into account the comprehensive and pin of interference
To property.Mobile phone recording, eavesdropping can be disturbed in two aspects of signal energy and signal message so that interference effect is more vertical
Body, more comprehensively.Polytype interference signal can be provided simultaneously to use for user's selection so that interference is more efficient, have more
Specific aim.
Brief description of the drawings
Strick precaution mobile phone recording and the schematic diagram of the acoustic interference device eavesdropped of the Fig. 1 for the present invention；
Fig. 2 generates the schematic diagram of interference signal type for the interference signal generation module of the present invention.
Reference：
101st, pallet container 102, wallboard 103, mobile phone
104th, power supply module 105, interference unit 106, amplifier
107th, ultrasound emission module
Embodiment
In acoustics, audio sound refers to sound wave of the frequency in 20Hz~20kHz scopes, and ultrasonic wave refers to the sound that frequency is higher than 20kHz
Ripple.Audio sound is the sound wave that human auditory can experience, mankind's Different Individual, and the audible frequencies upper limit is different, same person with
The growth at age, the audible frequencies upper limit can be reduced.For human individual, the audible frequencies upper limit can drop to below 16kHz, i.e., without
Method hears that frequency is higher than 16kHz sound.Microphone is the device that mobile phone is used to pick up voice signal, and microphone can receive sound
The upper frequency limit of ripple much sound is more than the upper frequency limit of human auditory, can reach supersonic band.Use the sound higher than 16kHz
Learn signal to disturb mobile microphone, microphone input energy saturation can be made, it is impossible to normally receive the useful audio in periphery
Signal is recorded, eavesdropped, and realizes energy interference.Because interference signal frequency is higher than human auditory system frequency range, so will not
Make periphery crowd by influence of noise.While energy interference, audible sound can also be modulated in ultrasound and be used as interference letter
Number, audible sound is sent to interior of mobile phone by ultrasound as carrier wave, and the local sound field of audible sound of high intensity is formed beside microphone,
Audible acoustic intelligence interference is realized, interference effect is further improved.
The acoustic interference device of the recording of strick precaution mobile phone and the eavesdropping of the present invention is disturbed just for mobile microphone, makes wheat
Gram wind can not normal work, to mobile phone, other components have no adverse effects, therefore mobile phone does not need other work(that microphone is participated in
Can normally it use.
In conjunction with accompanying drawing and example, the invention will be further described.
With reference to Fig. 1, a kind of strick precaution mobile phone recording of the invention and the acoustic interference device of eavesdropping, including：Pallet container
101st, power supply module 104, interference signal generation module 105, power amplifier module 106 and ultrasound emission module 107；Wherein,
The pallet container 101, which is used to place, needs disturbed mobile phone 103；The ultrasound emission module 107 is fixed on
On the wallboard 102 of pallet container 101 or on bottom plate, the direction of the launch is pointed to inside pallet container 101；The power supply module 104 is
Other modules in device provide electric energy；The interference signal generation module 105 produces interference signal and is supplied to power amplification mould
Block 106；There is provided launch to ultrasound emission module 107 by interference signal amplification for the power amplifier module 106.
With reference to an example, the modules in a kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping are done
Further illustrate.
The pallet container 101 is used to place mobile phone, is the pallet container of uncovered, and its bottom shape is rectangle, its side wall
Wallboard 102 is made up of wood materials.
The ultrasound emission module 107 is made up of M ultrasound emission submodule, wherein, M >=1；Each ultrasound emission submodule
Block is the array that N number of piezoelectric type ultrasonic transducer is composed in parallel, wherein, N >=1.When the number M of ultrasound emission submodule is more than 1
When, the ultrasound emission submodule be separately mounted on wallboard 102 and bottom plate on.
Outside AC signal is converted into low-voltage dc signal by the power supply module 104, and the other modules of feedway make
With.
With reference to Fig. 2, the interference signal generation module 105 can produce unifrequency sound, multi-frequency sound, frequency sweep sound, built-in
Polytype acoustic interference signal such as the ultrasound of ultrasonic and external voice modulation of voice modulation.Wherein built-in audio is interference
The audio prestored in signal generation module 105, external audio can be defeated by the audio signal on interference signal generation module 105
Incoming interface is inputted, and the selection of modulating audio frequency, the selection of resultant interference signal are passed through on interference signal generation module 105 by user
Man-machine interface carries out selection determination.Various types of acoustic interference signal instructions：
(1) unifrequency acoustic jamming signal, interference signal is the signal that frequency is f, meets f >=16kHz；
(2) multi-frequency acoustic jamming signal, interference signal is that frequency is f1, f2…fnN Signal averaging, wherein fi≥
16kHz (i=1,2 ... n)；
(3) frequency sweep acoustic jamming signal, interference signal is that upper limiting frequency is fh, lower frequency limit is flSwept-frequency signal, wherein fl
>=16kHz, fh>=16kHz and fl＜ fh, sweep method can be frequency fhTo flFrom high to low downward frequency sweep or；Frequency flExtremely
fhUpward frequency sweep from low to high；
(4) the ultrasonic interference signal of voice modulation, will be outer using single-sideband amplitude modulation or double-sideband amplitude modulation mode
Put audio disturbances signal or built-in audio interference signal is modulated in ultrasonic interference signal, form the ultrasound interference letter of voice modulation
Number.
The frequency band range of the audio disturbances signal is 20Hz~20kHz, including noise, voice and music etc..
The power amplifier module 106 is using the power amplifier module with wider working band.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those skilled in the art that to the skill of the present invention
Art scheme is modified, reduced or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (9)
1. a kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping, it is characterised in that described device includes：Pallet container
(101), interference signal generation module (105), power amplifier module (106) and ultrasound emission module (107)；The pallet container
(101) it is used to place to need disturbed mobile phone (103)；The direction of the launch of the ultrasound emission module (107) is pointed to pallet and held
Device (101) is internal；The interference signal generation module (105) is used to produce interference signal and is supplied to power amplifier module
(106)；Interference signal is amplified and provided to ultrasound emission module (107) and launched by the power amplifier module (106).
2. the acoustic interference device according to claim 1 for taking precautions against mobile phone recording and eavesdropping, it is characterised in that described device
Also include power supply module (104), for providing electric energy for other modules in device.
3. the acoustic interference device according to claim 1 or 2 for taking precautions against mobile phone recording and eavesdropping, it is characterised in that described
Ultrasound emission module (107) is made up of M ultrasound emission submodule, wherein, M >=1；Each ultrasound emission submodule is N number of super
The array of sonic transducer composition, wherein, N >=1.
4. the acoustic interference device for taking precautions against mobile phone recording and eavesdropping according to one of claim 1-3, it is characterised in that institute
State ultrasound emission module (107) to be fixed on the wallboard of pallet container (101) (102) or/and bottom plate, the wallboard (102) is
Hard material is made.
5. the acoustic interference device according to claim 1 or 2 for taking precautions against mobile phone recording and eavesdropping, it is characterised in that described
Interference signal generation module (105) also includes Man Machine Interface, and user sets interference signal type by the interface.
6. the acoustic interference device according to claim 5 for taking precautions against mobile phone recording and eavesdropping, it is characterised in that the interference
Signal generation module (105) also includes audio input interface, for inputting external audio disturbances signal.
7. the acoustic interference device according to claim 6 for taking precautions against mobile phone recording eavesdropping, it is characterised in that the interference letter
Number generation module (105) also includes internal memory, for storing built-in audio interference signal.
8. the acoustic interference device according to claim 7 for taking precautions against mobile phone recording and eavesdropping, it is characterised in that the interference
Signal generation module (105) generation interference signal type be：
Unifrequency acoustic jamming signal, interference signal is the signal that frequency is f, meets f >=16kHz；
Multi-frequency acoustic jamming signal, interference signal is that frequency is f1, f2…fnN Signal averaging, wherein fi>=16kHz i=1,
2,…n；
Frequency sweep acoustic jamming signal, interference signal is upper limiting frequency fh, lower frequency limit flSwept-frequency signal, wherein fl>=16kHz, fh≥
16kHz and fl＜ fh, sweep method is frequency fhTo flDownward frequency sweep or frequency f from high to lowlTo fhSweep upwards from low to high
Frequently；Or
The ultrasonic interference signal of voice modulation, using single-sideband amplitude modulation or double-sideband amplitude modulation mode, by external audio
Interference signal or built-in audio interference signal are modulated in ultrasonic interference signal, form the ultrasonic interference signal of voice modulation.
9. the acoustic interference device for taking precautions against mobile phone recording and eavesdropping according to claim 7 or 8, it is characterised in that described
External audio disturbances signal and the frequency band range of built-in audio interference signal are 20Hz~20kHz, including：Noise, voice and
Music.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406866.6A CN107204823A (en) | 2017-06-02 | 2017-06-02 | A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406866.6A CN107204823A (en) | 2017-06-02 | 2017-06-02 | A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107204823A true CN107204823A (en) | 2017-09-26 |
Family
ID=59906875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406866.6A Pending CN107204823A (en) | 2017-06-02 | 2017-06-02 | A kind of acoustic interference device for taking precautions against mobile phone recording and eavesdropping |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048797A (en) * | 2019-04-10 | 2019-07-23 | 中国科学院声学研究所 | A kind of acoustics protective device of prevention audio-frequency information leakage |
| CN111161753A (en) * | 2020-01-03 | 2020-05-15 | 上海交通大学 | Safe voice interaction method and system based on intelligent terminal |
| GB2582258A (en) * | 2019-02-26 | 2020-09-23 | Jaguar Land Rover Ltd | Portable device isolation system, device and method |
| RU207342U1 (en) * | 2021-07-20 | 2021-10-25 | Владимир Николаевич Световидов | DEVICE FOR PROTECTING ACOUSTIC INFORMATION FROM SECRET RECEIVING BY PORTABLE DEVICE |
| CN114337850A (en) * | 2021-12-30 | 2022-04-12 | 浙江大学 | Anti-eavesdropping method and system based on ultrasonic wave injection technology |
| CN114514711A (en) * | 2021-12-31 | 2022-05-17 | 深圳市安卫普科技有限公司 | Interference device |
| CN115426865A (en) * | 2022-08-22 | 2022-12-02 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
| WO2023123452A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference device |
| WO2023123455A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| WO2023123454A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| CN117254875A (en) * | 2023-11-07 | 2023-12-19 | 长春理工大学 | Portable desk-top anti-recording device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2582258A (en) * | 2019-02-26 | 2020-09-23 | Jaguar Land Rover Ltd | Portable device isolation system, device and method |
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| WO2023123451A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| WO2023123455A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| WO2023123454A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| CN115426865A (en) * | 2022-08-22 | 2022-12-02 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
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| CN117254875A (en) * | 2023-11-07 | 2023-12-19 | 长春理工大学 | Portable desk-top anti-recording device |
| CN117254875B (en) * | 2023-11-07 | 2024-01-26 | 长春理工大学 | Portable desk-top anti-recording device |
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Application publication date: 20170926 |
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