CN104142635B - Sound masking system with Surveillance center - Google Patents
Sound masking system with Surveillance center Download PDFInfo
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- CN104142635B CN104142635B CN201310170336.8A CN201310170336A CN104142635B CN 104142635 B CN104142635 B CN 104142635B CN 201310170336 A CN201310170336 A CN 201310170336A CN 104142635 B CN104142635 B CN 104142635B
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Abstract
The present invention relates to the sound masking system with Surveillance center, including multiple audio disturbances devices and multiple vibration interference devices, the multiple audio disturbances device and multiple vibration interference devices connect CCC respectively；The CCC includes：Central processing unit, query statement sending module, feedback signal reception module, feedback signal analysis module and the display screen being connected on the central processing unit；The central processing unit is instructed by query statement sending module to transmission detection on audio disturbances device and vibration interference device, and receives the feedback signal of the audio disturbances device and vibration interference device.For installed in the audio disturbances device and vibration interference device of each corner and position than higher position, sound masking system provided by the invention is easy to the maintenance of audio disturbances device and vibration interference device failure and the replacing of device.
Description
【Technical field】
The present invention relates to the technical field of anti-eavesdrop, more particularly to a kind of sound masking system with Surveillance center.
【Background technology】
With the continuous development of science and technology, Eavesdropping is also more and more diversified, such as telephone tapping, microwave eavesdropping, laser
Eavesdropping, data eavesdropping, shotgun microphone eavesdropping, pipeline eavesdropping etc..For the Eavesdropping of various ways, while also occur each
Kind various kinds prevents the means of eavesdropping.
At present, for closing place（Meeting room, office etc.）Acoustic information protection mainly by build sound insulation knot
Structure realizes that still, sound insulating method is limited to the factor of cost, engineering process level etc., and not reaching much also prevents individual
The requirement of shelter that information is revealed by sound approach.
The difference of mechanism is revealed according to sound, air-borne sound leakage can be divided into（Also direct sound can be claimed to reveal）Revealed with chatter
（Also indirect sound can be claimed to reveal）.Wherein, the leakage of direct sound is that sound passes through the sound that the propagation of air dielectric occurs and revealed, door, window,
The leakage of wall, floor etc. belongs to such.Indirect sound leakage is then that sound is vibrated by fixed（Such as wall, door, pipeline
Deng）The leakage propagated and occurred.
Prior art is usually directly to set the device of application audio disturbances at sound leakage in door, window, wall, floor etc.,
The setting application vibration interference device at the indirect sound leakage of pipeline etc., these audio disturbances devices and vibration interference device are set
It is separate to put, moreover, the position of these devices installation is also inconvenient to touch, therefore, the operation conditions of these devices
User can not learn.
Therefore, the prior art is defective, to be further improved and developed.
【The content of the invention】
The present invention provides a kind of sound masking system that remote monitoring can be carried out to audio disturbances device and vibration interference device, with
The convenient operation conditions for checking audio disturbances device and vibration interference device at any time, be advantageous to the dimension of audio disturbances device and vibration interference device
Repair and change.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention has advantages below：
Sound masking system with Surveillance center, including multiple audio disturbances devices and multiple vibration interference devices, wherein, it is described
Multiple audio disturbances devices and multiple vibration interference devices connect CCC respectively；
The audio disturbances device includes at least one sound acquisition module, data processing module, at least one noise and occurred
Module, the audio disturbances device may also include the input module being connected respectively with data processing module, display module and power supply mould
Block；
The vibration interference device includes：Noise excitation module, controller, noise driver and transducer, the vibration are dry
Disturbing device also includes power module;
The CCC includes：Central processing unit, the query statement being connected on the central processing unit
Sending module, feedback signal reception module, feedback signal analysis module and display screen；The central processing unit passes through query statement
Sending module instructs to transmission detection on audio disturbances device and vibration interference device；
The data processing module of the audio disturbances device instructs according to detection, and module occurs to sound acquisition module and noise
Detected；After the audio disturbances device detection completion feedback signal, the feedback signal are sent to the CCC
Including：Audio disturbances device power module electricity shortage, and data processing module can only be maintained under the electric power thus supplied of itself, feedback letter
Number it is power module electricity shortage；In the good situation of audio disturbances device power module power supply, feedback signal includes sound collection
The whether normal feedback signal of operation of module occurs for module and/or noise；
The controller of the vibration interference device according to detection instruct, to noise excitation module, noise driver, transducer,
Indicator lamp drive module is detected；After the vibration interference device detection completion feedback letter is sent to the CCC
Number, the feedback signal includes：The power module electricity shortage of vibration interference device, and controller can only maintain the power supply feelings of itself
Under condition, feedback signal is power module electricity shortage；In the good situation of the power module power supply of vibration interference device, feedback signal
The whether normal feedback letter of operation including noise excitation module, noise driver, indicator lamp drive module and/or transducer
Number.
The described sound masking system with Surveillance center, wherein, in the audio disturbances device, the data processing mould
Block occurs module with sound acquisition module and noise respectively and is connected.
The described sound masking system with Surveillance center, wherein, in the vibration interference device, the noise excitation module
It is connected on controller, the output on the controller accesses multiple noise drivers, the output access of each noise driver
Transducer.
The described sound masking system with Surveillance center, wherein, the CCC passes through feedback signal reception
Module receives the feedback signal that audio disturbances device and vibration interference device are sent, and feedback signal is analyzed by the feedback signal
Module feedback signal is arranged after in the display screen display.
The described sound masking system with Surveillance center, wherein, the feedback signal of the feedback signal analysis module is whole
Reason includes：The specific failure of audio disturbances device and vibration interference device is judged according to the data of feedback signal.
Sound masking system provided by the invention with Surveillance center, by CCC by multiple audio disturbances devices
Connected with vibration interference device, and detection instruction, institute are sent to audio disturbances device and vibration interference device by CCC
Audio disturbances device and vibration interference device are stated by the way that the running situation of power supply electric power thus supplied and all parts will be included after self-test
The CCC is sent to, is easy to understand each audio disturbances device and vibration interference device in time by CCC
Running situation.For installed in the audio disturbances device and vibration interference device of each corner and position than higher position, this hair
The bright sound masking system provided is easy to the maintenance of audio disturbances device and vibration interference device failure and the replacing of device.
【Brief description of the drawings】
Fig. 1 is the structural representation for the sound masking system that the present invention has Surveillance center；
Fig. 2 is the structural representation of audio disturbances device of the present invention；
Fig. 3 is the structural representation of vibration interference device of the present invention；
Fig. 4 is the structural representation of CCC of the present invention.
【Embodiment】
For the technological means and effect that the present invention reaches predetermined purpose and taken is expanded on further, below in conjunction with accompanying drawing and reality
Example is applied, to the embodiment of the present invention, is described in detail as follows.
Sound masking system provided by the invention with Surveillance center, including shown in 1, including multiple audio disturbances devices 110
With multiple vibration interference devices 120, the multiple audio disturbances device 110 and multiple vibration interference devices 120 connect the center respectively
Control centre 130.The audio disturbances device 110, as shown in Fig. 2 including at least one sound acquisition module 111, data processing
Module 112, at least one noise occur module 113, the data processing module 112 respectively with sound acquisition module 111 and
Noise occurs module 113 and connected；Sound acquisition module 111 obtains the acoustic information at the scene of being monitored by sound channel, concurrently
Deliver to data processing module 112；Data processing module 112, for preserving default sound pressure level intensity level, and according to sound collection
The acoustic information control noise that module 111 is sent occurs module 113 and produces voice interference signal.
The audio disturbances device 110 can gather the acoustic information at the scene of being monitored in real time, pass through the strong of the acoustic information
Degree and default sound pressure level intensity level produce interference signal to judge whether to need to control noise that module 113 occurs.
The audio disturbances device may also include the input module being connected with data processing module 112, display module and power supply
Module 114.The input module is used for the sound pressure level intensity level for receiving outside input, and sends to data processing module and preserve,
It is additionally operable to the control signal for receiving outside input, and adjusting noise by data processing module 112 occurs caused by module 113
The intensity of voice interference signal.So, human observer can apply needs according to reality, and data processing is adjusted by input module
The sound pressure level intensity level preserved in module 112, add the application flexibility of sound masking device.Realize sound pressure level intensity level
Controllable, data processing module 112 can adaptively control noise that module 113 occurs and produce interference signal.
The sound acquisition module 111 of the audio disturbances device 110 monitors the acoustic information of closing space, sound acquisition module
111 can be sound level meter, then the sound of the speech transducer collection site in sound level meter, and convert tones into electric signal, then
By preamplifier transforming impedance, microphone is set to be matched with attenuator.The signal that is exported after amplifier is low-pass filtered again, A/
Weighting network is added to after D conversions, FFT changes（There is different sensitivitys in different frequency to simulate human auditory system, in sound level
A kind of auditory properties that can simulate human ear are provided with meter, electric signal is modified to the network with sense of hearing approximation, this network
It is called weighting network.The sound pressure level measured by weighting network, no longer it has been the sound pressure level of objective physical amount, but has passed through sense of hearing
The sound pressure level of amendment）, sent after spectrum overlapping processing is carried out to signal to data processing module 112.
Data processing module 112 includes memory cell and comparator unit.Wherein, memory cell is received and preserved
The default sound pressure level intensity level that input module is sent；Comparator receives the acoustic scene message that sound acquisition module 111 is sent
Breath, and its default sound pressure level intensity level preserved is read from memory cell, the two is compared：If the acoustic information at scene
More than or equal to default sound pressure level intensity level, then to noise the output control signal of module 113 occurs for comparator, starts noise
Generation module 113 produces interference signal；If the acoustic information at scene is less than default sound pressure level intensity level, illustrate now to be not required to
Open noise and module 113 occurs.
Noise occurs module 113 and produces voice interference signal according to the control of data processing module 112.Sent out as noise
Raw module 113 produces a kind of implementation of interference signal, and the voice sensing that module 113 first passes through internal setting occurs for noise
The sound of device collection site, converts tones into electric signal, after preamplifier, low pass filter and A/D converters,
Digital processing is carried out again, upsets the electric signal of primary sound sound signal conversion（Such as former electric signal is upset by displacement）；Then pass through again
Audio amplification is carried out after D/A converters, low pass filter, voice interference signal is played by loudspeaker, it is monitored existing to shelter
The sound of field.In addition, in order to improve the security of voice interference signal, noise occurs also include one in module 113
Flash storage chips, random noise signal is preserved inside it, when the electric signal of sound conversion carries out digital processing, add
One random noise signal, so that it may strengthen the security of the electric signal after upsetting.
The vibration interference device 120, including noise excitation module 121, controller 122, noise driver 123 and transducer
124, the noise excitation module 121 is connected on controller 122, and the output on the controller 122 accesses multiple noises and driven
Dynamic device 123, the output access transducer 124 of each noise driver 123.
The noise excitation module 121 is responsible for producing white noise.White noise refers to the work(of the frequency component in one section of sound
Rate is in entire audible scope（0-20KHZ）All it is inside uniform.
The controller 122 is by noise allocation caused by the noise excitation module 121 to multipath noise driver 123.
The noise excitation module 121 can also be produced noise frequency range and carry out controllable adjustment by the controller, and will adjust result
The indicator lamp drive module 125 being connected with the controller is sent to show.The noise driver 123 amplifies noise, and
Receive the accompanying drawing amplitude input control of the controller 122, export corresponding drive level.The transducer 124, noise is believed
Number it is converted into the vibrational energy of same frequency.If the transducer 124 is fixed on glass, the transducer 124, which will vibrate, to be passed
To the glass, driving glass realizes microvibration, realizes anti-eavesdrop.The effect of the transducer 124 is to change electric signal
Into mechanical oscillation signal.Converting the electrical signal to mechanical oscillation signal has two kinds of physical effects：Magnetostrictive effect or piezoelectricity
Effect.
The vibration interference device 120 can also include power module 126.
The CCC 130 includes as shown in Figure 4：Central processing unit 131, it is connected to the central processing
Query statement sending module 132, feedback signal reception module 133, feedback signal analysis module 134 and display screen on device 131
135；The central processing unit 131 is by query statement sending module 132 on audio disturbances device 110 and vibration interference device 120
Send detection instruction.
The data processing module 112 of the audio disturbances device 110 instructs according to detection, to sound acquisition module 111 and makes an uproar
Sound occurs module 113 and detected.The detection of audio disturbances device 110 is sent instead after completing to the CCC 130
Feedback signal, the feedback signal include：The electric power thus supplied of power module 114, the electricity shortage of power module 114, and data processing
Module 112 can only be maintained under the electric power thus supplied of itself, and feedback signal is power module electricity shortage；Powered in power module 114
Good situation, feedback signal include sound acquisition module and/or noise whether normal etc. the audio of operation of module occur doing
Disturb the feedback signal of device.
The controller 122 of the vibration interference device 120 instructs according to detection, to noise excitation module 121, noise driver
123rd, transducer 124, indicator lamp drive module 125 are detected.The backward center is completed in the detection of vibration interference device 120
Control centre 130 sends feedback signal, and the feedback signal includes：The electric power thus supplied of the power module 126 of vibration interference device, shakes
The electricity shortage of power module 126 of dynamic interference unit, and controller 122 can only be maintained under the electric power thus supplied of itself, feedback signal is
Power module electricity shortage；Powered good situation in the power module 126 of vibration interference device, feedback signal includes noise excitation
Whether module, noise driver, the operation of indicator lamp drive module and/or transducer are normal；Etc. the feedback letter of vibration interference device
Number.
The CCC 130 receives audio disturbances device 110 and vibration interference device by feedback signal reception module
120 send feedback signals, and by feedback signal after the feedback signal analysis module 134 arranges feedback signal in institute
State and shown on display screen 135.The feedback signal of the feedback signal analysis module 134 arranges the data included according to feedback signal
Judge the specific failure of audio disturbances device 110 and vibration interference device 120.
Sound masking system provided by the invention with Surveillance center, by CCC by multiple audio disturbances devices
Connected with vibration interference device, and detection instruction, institute are sent to audio disturbances device and vibration interference device by CCC
After audio disturbances device and vibration interference device are stated by self-test, the operation feelings of power supply electric power thus supplied and all parts will be included
Condition is sent to the CCC, is easy to understand each audio disturbances device and vibration interference in time by CCC
The running situation of device.For installed in the audio disturbances device and vibration interference device of each corner and position than higher position, this
Invent the sound masking system provided and be easy to the maintenance of audio disturbances device and vibration interference device failure and the replacing of device.
Only embodiments of the invention are described above, but and be not used to the limitation present invention, done according to spirit of the invention
The various change gone out or modification, all within the protection category of the claim of the present invention.
Claims (1)
1. the sound masking system with Surveillance center, including multiple audio disturbances devices and multiple vibration interference devices, it is characterised in that
The multiple audio disturbances device and multiple vibration interference devices connect CCC respectively；
The audio disturbances device includes at least one sound acquisition module, data processing module, at least one noise and module occurs,
The audio disturbances device also includes input module, display module and the power module being connected respectively with data processing module；It is described
Data processing module occurs module with sound acquisition module and noise respectively and is connected；The sound acquisition module passes through sound channel
The acoustic information at the scene of being monitored is obtained, and is sent to data processing module, wherein the sound acquisition module is sound level meter, sound
The sound of speech transducer collection site in level meter；Data processing module, for preserving default sound pressure level intensity level, and root
The acoustic information control noise sent according to sound acquisition module occurs module and produces voice interference signal；
The vibration interference device includes：Noise excitation module, controller, noise driver and transducer, the vibration interference device
Also include power module；The noise excitation module is connected on controller, and the output on the controller accesses multiple noises
Driver, the output access transducer of each noise driver；
The CCC includes：Central processing unit, the query statement being connected on the central processing unit are sent
Module, feedback signal reception module, feedback signal analysis module and display screen；The central processing unit is sent by query statement
Module instructs to transmission detection on audio disturbances device and vibration interference device；
The data processing module of the audio disturbances device is instructed according to detection, and module, which occurs, to sound acquisition module and noise is carried out
Detection；The audio disturbances device detection includes after completing to CCC transmission feedback signal, the feedback signal：
Audio disturbances device power module electricity shortage, and data processing module can only be maintained under the electric power thus supplied of itself, feedback signal is
Power module electricity shortage；In the good situation of audio disturbances device power module power supply, feedback signal includes sound acquisition module
And/or the whether normal feedback signal of operation of module occurs for noise；
The controller of the vibration interference device instructs according to detection, to noise excitation module, noise driver, transducer, instruction
Lamp drive module is detected；After the vibration interference device detection completion feedback signal, institute are sent to the CCC
Stating feedback signal includes：The power module electricity shortage of vibration interference device, and controller can only be maintained under the electric power thus supplied of itself,
Feedback signal is power module electricity shortage；In the good situation of the power module power supply of vibration interference device, feedback signal includes
Noise excitation module, noise driver, the whether normal feedback signal of the operation of indicator lamp drive module and/or transducer；
The CCC receives the feedback that audio disturbances device and vibration interference device are sent by feedback signal reception module
Signal, and by feedback signal after the feedback signal analysis module arranges feedback signal in the display screen display；
The feedback signal of the feedback signal analysis module, which arranges, to be included：According to the data of feedback signal judge audio disturbances device and
The specific failure of vibration interference device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170336.8A CN104142635B (en) | 2013-05-10 | 2013-05-10 | Sound masking system with Surveillance center |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310170336.8A CN104142635B (en) | 2013-05-10 | 2013-05-10 | Sound masking system with Surveillance center |
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| CN104142635B true CN104142635B (en) | 2017-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104575486B (en) * | 2014-12-25 | 2019-04-02 | 中国科学院信息工程研究所 | Sound leakage protection method and system based on the principle of acoustic masking |
| CN110568290A (en) * | 2019-09-18 | 2019-12-13 | 山东省计算中心（国家超级计算济南中心） | Real-time monitoring device for load working state of sound masking system under multi-load condition |
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| CN201533313U (en) * | 2009-10-29 | 2010-07-21 | 天津光电聚能专用通信设备有限公司 | Conference voice interferometer and system thereof |
| CN102377503A (en) * | 2010-08-11 | 2012-03-14 | 安方高科信息安全技术(北京)有限公司 | Method and device for preventing laser eavesdropping |
| CN202383998U (en) * | 2011-12-22 | 2012-08-15 | 国家保密科学技术研究所 | Sound masking system |
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| US20030142833A1 (en) * | 2002-01-31 | 2003-07-31 | Roy Kenneth P. | Architectural sound enhancement with test tone diagnostics |
| US8666086B2 (en) * | 2008-06-06 | 2014-03-04 | 777388 Ontario Limited | System and method for monitoring/controlling a sound masking system from an electronic floorplan |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201533313U (en) * | 2009-10-29 | 2010-07-21 | 天津光电聚能专用通信设备有限公司 | Conference voice interferometer and system thereof |
| CN102377503A (en) * | 2010-08-11 | 2012-03-14 | 安方高科信息安全技术(北京)有限公司 | Method and device for preventing laser eavesdropping |
| CN202383998U (en) * | 2011-12-22 | 2012-08-15 | 国家保密科学技术研究所 | Sound masking system |
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