CN205142236U - Recording shield assembly of mixing - Google Patents
Recording shield assembly of mixing Download PDFInfo
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- CN205142236U CN205142236U CN201520849739.XU CN201520849739U CN205142236U CN 205142236 U CN205142236 U CN 205142236U CN 201520849739 U CN201520849739 U CN 201520849739U CN 205142236 U CN205142236 U CN 205142236U
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Abstract
The utility model discloses a pronunciation shield assembly of mixing, include: baseband control module, base frequency generation module, password application module, signal shaping amplifier module and emission module still include: baseband control chip links to each other with low frequency DDS generator, low frequency amplifier, baseband control chip links to each other with high frequency sound table syntonizer, high frequency amplifier, baseband control chip links to each other with the generation of random number unit, baseband control chip links to each other with the password unit, low frequency amplifier and high frequency amplifier link to each other with the filtering shaping unit respectively, the filtering shaping unit links to each other with power secondary amplifier, impedance fader in proper order, the impedance fader links to each other with low frequency transmitter and high -frequency emission ware respectively. The utility model discloses launch the signal through low frequency transmitter or high -frequency emission ware, form the mixing and disturb, reach the interference to voice device. The utility model discloses accommodation is wide, the shielding effect is strong, the security strong, the interference is effectual, the practicality is strong, can satisfy the multipurpose demand.
Description
Technical field
The utility model belongs to recording shield technology field, is specifically related to a kind of recording screening arrangement of mixing.
Background technology
Information security is the lifeline of an enterprise, a department and even whole country.If confidential information is revealed, to be so no matter that therefore country, government department, enterprise and even individual can suffer immeasurable loss.Current; along with the advanced person day by day of recording technology; the function of sound pick-up outfit is become stronger day by day; increasing people utilizes voice recording equipment to carry out unlawful activities; divulge a secret for voice recording and also there is no effective solution both at home and abroad at present; how to block various sound pick-up outfit, be badly in need of effective voice screening arrangement and address this problem, protection voice messaging safety.
Recording screening arrangement, also known as recording shielding device, recording cropper or recording block device etc., is mainly used in preventing the equipment such as mobile phone, recording pen from illegally recording.Current recording shields the technology path adopted and comprises: with acoustic jamming frequently and electromagnetic interference two kinds.
Wherein, audio signal is directly adopted to disturb with acoustic jamming frequently, interference effect is better, but maximum shortcoming has audible noise, user must wear headphones or carry out voice call in shielding house, and limitation is large, could can only use under the occasion that some are more special, this kind of shield technology is subject to the restriction of environmental condition, and also can bring interference and inconvenience to people, user cannot accept simultaneously.
Radiated interference mode then adopts frequency electromagnetic waves to disturb sound pick-up outfit, can realize interference, mainly for old-fashioned sound pick-up outfit, as cassette recorder or analog recording pen etc. in asonant situation.But for the sound pick-up outfit that some are new-type, as mobile phone, digital recording pen etc., its interference effect is extremely limited, thus cause the problems such as overlay device type is few, shield effectiveness is poor, and practicality is not strong.Therefore existing recording shielding device cannot meet the multiple demand in practical application better.
Utility model content
The utility model provides a kind of recording screening arrangement of mixing, the utility model is in order to overcome the deficiency of existing white noise perturbation technique, single electromagnetic interference technology, adopt more effective, more advanced frequency mixing technique, achieve all kinds of sound pick-up outfit of shielding, solve that existing recording shielding device overlay device type is few, shield effectiveness is poor, the problem that practicality is not strong, described below:
Based on a recording screening arrangement for mixing, described recording screening arrangement comprises: base band control module, fundamental frequency generation module, cipher application module, signal shaping amplification module and transmitter module,
Described base band control module comprises: base band control chip; Described fundamental frequency generation module comprises: fundamental frequency generator and fundamental frequency amplifiers; Described cipher application module comprises: random number generation unit and password unit; Described signal shaping amplification module comprises: filter shape unit, power secondary amplifier and impedance gain adjuster; Described transmitter module comprises: low frequency transmitter and HF transmitter;
Wherein, described fundamental frequency generator comprises: low frequency DDS generator and high frequency sound table resonator; Described fundamental frequency amplifiers comprises: low frequency amplifier and high-frequency amplifier,
Described base band control chip is connected with described low frequency DDS generator, described low frequency amplifier; Described base band control chip is connected with described high frequency sound table resonator, described high-frequency amplifier; Described base band control chip is connected with described random number generation unit; Described base band control chip is connected with described password unit;
Described low frequency amplifier and described high-frequency amplifier are connected with described filter shape unit respectively; Described filter shape unit is connected with described power secondary amplifier, described impedance gain adjuster successively; Described impedance gain adjuster is connected with described HF transmitter with described low frequency transmitter respectively.
Wherein, described low frequency transmitter is ultrasonic transducer.
Wherein, described HF transmitter is omnidirectional antenna.
The beneficial effect of the technical scheme that the utility model provides is:
1) shield effectiveness is good, the mixing perturbation technique that the utility model adopts high frequency low-frequency phase to combine, and High-frequency Interference carries out the interference of electromagnetic radiation from the angle of electronic device EMC, disturbs it normally to work; Low-frequency disturbance, from the angle being mixed into primitive tone signal, provide a kind of vox capitis signal, and this voice signal is similarly not heard sound; The technology that low-and high-frequency combines, compensate for the situation that single High-frequency Interference technology cannot be disturbed the speech ciphering equipment that some electronic shields are perfect, and effectively reduces the amount of electromagnetic radiation of single High-frequency Interference, makes product environmental protection more.
2) high security, the high frequency radiation that the utility model adopts, interference electronic equipment, it is produced as irregularities, cannot be eliminated by relational approach; Low-frequency disturbance part, after providing vox capitis signal collected, by the Fourier transform scheduling algorithm of speech chip inside, converts the voice signal that comes true, and as eliminated interference, then eliminates primitive tone signal simultaneously, makes former voice messaging impaired, therefore cannot be separated.
3) high coverage rate, the utility model adopts low-and high-frequency frequency mixing technique, by disturbing electromagnetic radiation and voice messaging source, most of main flow voice recording equipment on nearly cover market.
4) good confidentiality, the utility model is static, noiseless in the course of the work, except operator points out, without other discernable part any, and can carry out cooperation and the camouflage of environment according to surrounding environment, have high security.
5) mobility, the utility model can powered battery, and broken away from the restriction of fixed power source, making it use more has flexibility.
Relative to prior art, the utility model has the features such as shield effectiveness is good, fail safe is high, coverage rate is high, good confidentiality, mobility are strong, be applicable to various different sound pick-up outfit and use occasion, the interference effect that effectively can solve existing similar products at home and abroad is poor, poor stability, be easy to reduction, have audible noise in the course of work, be easy to number of drawbacks and deficiencies such as discovering, all kinds of occasions such as conclave, business talks, debug can be widely used in.
Accompanying drawing explanation
Fig. 1 is the operation principle schematic diagram of the recording screening arrangement of mixing;
Fig. 2 is the structural representation of the recording screening arrangement of mixing;
Fig. 3 is the structural representation of fundamental frequency generator in the recording screening arrangement of mixing;
Fig. 4 is the structural representation of fundamental frequency amplifiers in the recording screening arrangement of mixing;
Fig. 5 is the structural representation of the recording screening arrangement medium and low frequency radiating portion of mixing;
Fig. 6 is the structural representation of the recording screening arrangement medium-high frequency radiating portion of mixing.
In accompanying drawing, the list of parts representated by each label is as follows:
1: base band control module; 2: fundamental frequency generation module;
3: cipher application module; 4: signal shaping amplification module;
5: transmitter module; 6: power module;
11: base band control chip; 12: the first power supply chips;
13: second source chip; 21: fundamental frequency generator;
22: fundamental frequency amplifiers; 31: random number generation unit;
32: password unit; 41: filter shape unit;
42: power secondary amplifier; 43: impedance gain adjuster;
51: low frequency transmitter; 52: HF transmitter;
211: low frequency DDS generator; 212: high frequency sound table resonator;
221: low frequency amplifier; 222: high-frequency amplifier.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below the utility model execution mode is described in further detail.
A kind of recording screening arrangement of mixing, see Fig. 1, the operation principle of this recording screening arrangement is: when speech ciphering equipment gathers voice signal, this recording screening arrangement, by launching mixing interference signal, implements electromagnetic interference on the one hand, launches vox capitis signal on the one hand, together gathered by sound pick-up outfit with primitive tone signal, and mixing interference signal intensity is greater than primitive tone signal intensity, thus make sound pick-up outfit output noise signal, reach the object of voice shielding.
A recording screening arrangement for mixing, see Fig. 2, Fig. 3 and Fig. 4, this recording screening arrangement comprises: base band control module 1, fundamental frequency generation module 2, cipher application module 3, signal shaping amplification module 4, transmitter module 5 and power module 6.
Base band control module 1 comprises: base band control chip 11, first power supply chip 12 and second source chip 13; Fundamental frequency generation module 2 comprises: fundamental frequency generator 21 and fundamental frequency amplifiers 22; Cipher application module 3 comprises: random number generation unit 31 and password unit 32; Signal shaping amplification module 4 comprises: filter shape unit 41, power secondary amplifier 42 and impedance gain adjuster 43; Transmitter module 5 comprises: low frequency transmitter 51 and HF transmitter 52.
Fundamental frequency generator 21 comprises: low frequency DDS (direct digital synthesis technique) generator 211 and high frequency sound table resonator 212; Fundamental frequency amplifiers 22 comprises: low frequency amplifier 221 and high-frequency amplifier 222.
See Fig. 5 and Fig. 6, base band control chip 11 is connected with low frequency DDS generator 211 by I/O interface; Base band control chip 11 is connected with high frequency sound table resonator 212 by I/O interface; Base band control chip 11 (adopts general I by Serial Peripheral Interface (SPI)
2c interface) be connected with random number generation unit 31; Base band control chip 11 is connected with password unit 32 by Serial Peripheral Interface (SPI) (adopting general SPI interface).
Base band control chip 11 is connected with low frequency amplifier 221; Base band control chip 11 is connected with high-frequency amplifier 222;
Low frequency amplifier 221 is connected with filter shape unit 41 respectively with high-frequency amplifier 222; Filter shape unit 41 is connected with power secondary amplifier 42, impedance gain adjuster 43 successively; Impedance gain adjuster 43 is connected with HF transmitter 52 with low frequency transmitter 51 respectively.
See Fig. 5, the course of work that the low frequency signal in the utility model embodiment is launched is: base band control chip 11 controls the fundamental frequency signal that low frequency DDS generator 211 generates low frequency; Base band control chip 11 is by calling random number generation unit 31 and password unit 32 generates encrypted random number sequence, and base band control chip 11 completes the frequency adjustment of the fundamental frequency signal of low frequency according to encrypted random number sequence (being such as made up of Binary Zero 1) and exports; The fundamental frequency signal of the low frequency exported carries out elementary amplification through low frequency amplifier 221, then input to filter shape unit 41 successively, filtering that power secondary amplifier 42 and impedance gain adjuster 43 carry out signal, amplification and impedance matching, finally transfer to low frequency transmitter 51, complete the transmitting of the fundamental frequency signal of low frequency.
See Fig. 6, the course of work that the high-frequency signal in the utility model embodiment is launched is: base band control chip 11 controls the fundamental frequency signal that high frequency sound table resonator 212 generates high frequency; Base band control chip 11 is by calling random number generation unit 31 and password unit 32 generates encrypted random number sequence, and base band control chip 11 completes the frequency adjustment of the fundamental frequency signal of high frequency according to encrypted random number sequence (being such as made up of Binary Zero 1) and exports; The fundamental frequency signal of the high frequency exported carries out elementary amplification through high-frequency amplifier 222, then input to filter shape unit 41 successively, filtering that power secondary amplifier 42 and impedance gain adjuster 43 carry out signal, amplification and impedance matching, finally transfer to HF transmitter 52, complete the transmitting of the fundamental frequency signal of high frequency.
Power module 6 completes the power supply to whole recording screening arrangement, can be external power source, and built-in lithium battery also can be adopted to power.First power supply chip 12 and second source chip 13 complete the management to power module 6, ensure voltage stabilization and power supply safety.
Random number generation unit 31 in the utility model embodiment is through the real random number generator of the certification of national Password Management office and model examination & approval, and the utility model embodiment does not repeat this.
Password unit 32 in the utility model embodiment be through the certification of national Password Management office and model examination & approval, the cryptographic algorithm of employing has SM1 or SM4 cryptographic algorithm.This password unit 32 adopts techniques well known in the art, and the utility model embodiment does not repeat this.
Low frequency transmitter 51 is ultrasonic transducer, is used for carrying out electroacoustic conversion to ultrasonic electrical signal, and launches powerful ultrasonic signal.HF transmitter 52 is omnidirectional antenna, realizes the transmitting of high-frequency signal.
Wherein, the model of the utility model embodiment to base band control chip 11 is not restricted, and the preferred model of the utility model embodiment is that the chip of AT91SAM7X256 realizes.
The utility model embodiment is not restricted the model that the first power supply chip 12 adopts, and the preferred model of the utility model embodiment is that the chip of LP2982 realizes; Be not restricted the model that second source chip 13 adopts, the preferred model of the utility model embodiment is that the chip of LM2596 realizes.
High frequency sound table resonator 212 in the utility model embodiment adopts model to be that the chip of RO3110 realizes; Low frequency amplifier 221 adopts model to be that the chip of TPA3001 realizes; High-frequency amplifier 222 adopts model to be that the chip of RA20H8994 realizes, and power secondary amplifier 42 adopts model to be that the broadband transformer module of EE40 realizes.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. a recording screening arrangement for mixing, described recording screening arrangement comprises: base band control module, fundamental frequency generation module, cipher application module, signal shaping amplification module and transmitter module, is characterized in that,
Described base band control module comprises: base band control chip; Described fundamental frequency generation module comprises: fundamental frequency generator and fundamental frequency amplifiers; Described cipher application module comprises: random number generation unit and password unit; Described signal shaping amplification module comprises: filter shape unit, power secondary amplifier and impedance gain adjuster; Described transmitter module comprises: low frequency transmitter and HF transmitter;
Wherein, described fundamental frequency generator comprises: low frequency DDS generator and high frequency sound table resonator; Described fundamental frequency amplifiers comprises: low frequency amplifier and high-frequency amplifier,
Described base band control chip is connected with described low frequency DDS generator, described low frequency amplifier; Described base band control chip is connected with described high frequency sound table resonator, described high-frequency amplifier; Described base band control chip is connected with described random number generation unit; Described base band control chip is connected with described password unit;
Described low frequency amplifier and described high-frequency amplifier are connected with described filter shape unit respectively; Described filter shape unit is connected with described power secondary amplifier, described impedance gain adjuster successively; Described impedance gain adjuster is connected with described HF transmitter with described low frequency transmitter respectively.
2. the recording screening arrangement of a kind of mixing according to claim 1, is characterized in that, described low frequency transmitter is ultrasonic transducer.
3. the recording screening arrangement of a kind of mixing according to claim 1, is characterized in that, described HF transmitter is omnidirectional antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520849739.XU CN205142236U (en) | 2015-10-29 | 2015-10-29 | Recording shield assembly of mixing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520849739.XU CN205142236U (en) | 2015-10-29 | 2015-10-29 | Recording shield assembly of mixing |
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| CN205142236U true CN205142236U (en) | 2016-04-06 |
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| CN201520849739.XU Active CN205142236U (en) | 2015-10-29 | 2015-10-29 | Recording shield assembly of mixing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306162A (en) * | 2015-10-29 | 2016-02-03 | 天津光电安辰信息技术有限公司 | Mixing-based recording shielding device and realizing method thereof |
| CN106059706A (en) * | 2016-05-24 | 2016-10-26 | 广东电网有限责任公司信息中心 | Mixed sound recording blocker |
| CN106297761A (en) * | 2016-10-21 | 2017-01-04 | 北京至诚安邦信息技术有限公司 | Voice shielding covering appts |
-
2015
- 2015-10-29 CN CN201520849739.XU patent/CN205142236U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306162A (en) * | 2015-10-29 | 2016-02-03 | 天津光电安辰信息技术有限公司 | Mixing-based recording shielding device and realizing method thereof |
| CN105306162B (en) * | 2015-10-29 | 2018-04-06 | 天津光电安辰信息技术股份有限公司 | The recording screening arrangement and its implementation of a kind of mixing |
| CN106059706A (en) * | 2016-05-24 | 2016-10-26 | 广东电网有限责任公司信息中心 | Mixed sound recording blocker |
| CN106059706B (en) * | 2016-05-24 | 2019-01-15 | 广东电网有限责任公司信息中心 | A kind of mixing sound wave recording shielding device |
| CN106297761A (en) * | 2016-10-21 | 2017-01-04 | 北京至诚安邦信息技术有限公司 | Voice shielding covering appts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300211 Meijiang Road, Tianjin, No. 4, No. Patentee after: Tianjin opto electronic information technology Limited by Share Ltd Address before: 300211 Meijiang Road, Tianjin, No. 4, No. Patentee before: TOEC Anchen Information Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mixing-based recording shielding device and realizing method thereof Effective date of registration: 20180125 Granted publication date: 20160406 Pledgee: Credit Guarantee Center of small and medium enterprises in Tianjin Pledgor: Tianjin opto electronic information technology Limited by Share Ltd Registration number: 2018120000002 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200326 Granted publication date: 20160406 Pledgee: Credit Guarantee Center of small and medium enterprises in Tianjin Pledgor: TIANJIN OPTOELECTRONICS ANCHEN INFORMATION TECHNOLOGY Co.,Ltd. Registration number: 2018120000002 |