CN110824579B - Anti-system tracking laser eavesdropping system and using method - Google Patents
Anti-system tracking laser eavesdropping system and using method Download PDFInfo
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Abstract
The invention relates to the field of anti-copy tracking laser eavesdropping, in particular to an anti-copy tracking laser eavesdropping system and a using method thereof. Include early warning system and tracking system, early warning system and tracking system all include respective hardware part and software part, the hardware part of early warning system is near infrared detector I, cloud platform I and early warning system the main control unit, the software part of early warning system is cloud platform control program I, image solution program I and listens early warning program, the hardware part of tracking system is infrared detector II, cloud platform II and tracking system the main control unit, the software part of tracking system is cloud platform control program II, image solution program and II laser interception position solution program, the laser eavesdropping system is tracked in the anti-braking still includes the main server. The invention has the advantages of convenient installation, complete structure and very strong implementability, and is suitable for buildings with higher information safety protection level and vehicles with higher protection level.
Description
Technical Field
The invention relates to the field of anti-copy tracking laser eavesdropping, in particular to an anti-copy tracking laser eavesdropping system and a using method thereof.
Background
Laser voice interception is a technology that utilizes laser to carry out remote voice pickup, and for traditional microphone pickup, laser voice interception technology passes through laser speckle formation of image or laser coherent detection technique, and the vibration of the target surface that causes the acoustic pressure of listening the target nearby with the sound source turns into audio signal, realizes contactless voice interception at remote.
In the interception process, light and thin materials such as a tissue box, a packaging bag, a beverage bottle and a paper cup near an intercepted person are usually selected as interception targets, the targets are passive materials, independent power supply is not needed, electromagnetic waves are not emitted outwards, and therefore the interception target has very high concealment. The voice recognition method can be widely applied to voice acquisition and recognition of specific personnel, audio and video security monitoring of key areas such as prisons and subways, anti-terrorism, anti-virus, public security, technical investigation and the like.
Because the monitoring process is very hidden, most of the existing equipment can only detect the signal monitored by the laser, and no effective means for reversely tracking the laser monitoring position exists at present.
Therefore, it is necessary to solve the above problems.
Disclosure of Invention
Aiming at the problems in the background art, the invention provides a countercheck tracking laser eavesdropping system and a using method thereof, and a comprehensive countercheck platform is built to protect an important information protection area. The method can effectively prevent the key area from being intercepted by the laser, and can track and position the laser interception position, and the technical scheme adopted by the invention is as follows:
a counter-control tracking laser eavesdropping system comprises an early warning system and a tracking system, wherein the early warning system and the tracking system respectively comprise a hardware part and a software part;
the hardware part of the early warning system is as follows:
the system comprises a near infrared detector I, a monitoring unit and a control unit, wherein the near infrared detector I is used for scanning and monitoring a monitored area;
the near infrared detector I is fixed on the holder I, and the angle of the near infrared detector I can be adjusted on the holder I;
the early warning system comprises an early warning system main control unit, wherein the early warning system main control unit comprises a holder driving unit I, the holder driving unit I comprises a stepping motor I and a driver unit I, and the stepping motor I is connected with the holder I and controls and adjusts the position of the holder I;
the software part of the early warning system is as follows:
the cloud deck control program I controls the cloud deck I to scan according to a specified path;
the method comprises the following steps that an image calculation program I is used for calculating and identifying whether laser interception faculae exist or not;
a listening early warning program for triggering an early warning signal;
the hardware part of the tracking system is as follows:
the near infrared detector II is used for scanning the monitored area for the second time;
the holder II is fixed on the near infrared detector II, the angle of the near infrared detector II can be adjusted on the holder II,
the tracking system comprises a tracking system main control unit, a cradle head driving unit II, a drive unit II and a control unit, wherein the tracking system main control unit comprises a cradle head driving unit II, the cradle head driving unit II comprises a stepping motor II and a driver unit II, and the stepping motor II is connected with the cradle head II and controls and adjusts the position of the cradle head II;
the software part of the tracking system is as follows:
the holder control program II controls the holder II to scan according to a specified path;
the image calculating program II is used for calculating and identifying whether laser interception faculae exist or not;
the laser interception azimuth calculation program is used for carrying out positioning analysis on the laser interception azimuth;
the anti-system tracking laser eavesdropping system further comprises a main server, wherein the main server is connected with a display, a near infrared detector continuously shoots an image and transmits the image to the main server, the main server resolves and identifies whether an interception light spot exists or not, if the interception light spot exists, the light spot is displayed on the display, and meanwhile, a tracking starting signal is triggered. If no light spot exists, the scanning is continued according to the program path.
The early warning system main control unit further comprises a microprocessor I, an image storage processing unit I and a network communication unit I, wherein the image storage processing unit I comprises a storage unit I and an image processor I, and image information monitored by the near infrared detector I collected by the image storage processing unit I is converted into a network signal by the microprocessor I and is sent to a main server through the network communication unit I.
The tracking system main control unit further comprises a microprocessor II, an image storage processing unit II and a network communication unit II, the image storage processing unit II comprises a storage unit II and an image processor II, and the microprocessor II converts image information monitored by the near infrared detector II collected by the image storage processing unit II into network signals and sends the network signals to the main server through the network communication unit II.
A method for using a retro-tracking laser eavesdropping system includes the steps of:
s1, scanning and monitoring the monitored area by the near-infrared detector I;
s2, uploading image signals, and uploading the monitored picture information to a main server by the early warning main control unit;
s3, processing by the main server, and resolving the identification image signal by the main server;
s4, issuing an instruction, and issuing the laser early warning signal position to a tracking main control unit by the main server;
s5, secondary scanning, wherein the near infrared detector II scans a second laser speckle in the monitored area;
and S6, determining the laser interception position, and resolving and identifying the position of the laser interception source by the main server.
The specific steps of S1 are as follows:
near-infrared detector I fixes on cloud platform I, and the angularly adjustable, cloud platform I is connected with step motor I, step motor I is driven by cloud platform drive unit, moves on specific track, scans the shooting in the region of protecting.
The specific steps of S2 are as follows:
the near-infrared detector I stores images shot in the monitoring process on the image storage processing unit I, and the microprocessor I uploads cradle head position information, image signals and the like to the main server through the network communication unit I.
The specific steps of S3 are as follows:
the main server resolves and identifies whether an interception light spot exists through an image resolving program I, if the interception light spot exists, the light spot is displayed on a display, and an early warning signal is triggered through an interception early warning program; simultaneously, the tracking system is started.
The specific steps of S4 are as follows:
and the main server issues the laser early warning signal position to the tracking main control unit, and a microprocessor II in the tracking main control unit identifies and analyzes the signal and transmits the position signal to a holder driving unit II.
The specific steps of S5 are as follows:
the holder driving unit II controls the holder II to move to a specific position, the near-infrared detector II continues to scan a second laser speckle in the monitored area, and image information is transmitted back to the tracking main control unit;
the specific steps of S6 are as follows:
the main control unit of the tracking system uploads the secondary scanning image information to the main server, the main server determines the position information of the two laser speckles, specific interception positions are specifically resolved and identified through an interception azimuth resolving program, the interception positions are displayed on a display, and meanwhile, a tracking starting signal is triggered.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a straight line is determined by finding two light spots on the monitoring light path, so that the laser monitoring source is positioned, the position of the laser monitoring source can be tracked, and the problems that only laser monitoring early warning can be realized and the laser monitoring position cannot be tracked in the prior art are solved.
2. According to the invention, by arranging the holder and the holder driving unit, the laser monitoring range is greatly improved, the shooting precision of laser speckles is improved, and the laser speckle-monitoring device has a wider application range.
3. The invention has the advantages of convenient installation, complete structure and very strong implementability, and is suitable for buildings with higher information safety protection level and vehicles with higher protection level.
Drawings
FIG. 1 is a system layout of the present invention;
FIG. 2 is a block diagram of the present invention;
FIG. 3 is a block diagram of a main control unit of the early warning system of the present invention;
FIG. 4 is a flow chart of the early warning system of the present invention;
FIG. 5 is a block diagram of a main control unit of the tracking system of the present invention;
FIG. 6 is a flow chart of the tracking system of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A kind of anti-system traces the laser eavesdropping system, including early warning system and tracing system, these two systems include their own hardware system and corresponding control, discernment, positioning software two parts separately, the hardware part of the said early warning system is:
the near infrared detector I scans and monitors the monitored area, simultaneously shoots images in real time and uploads the images to the image storage processing unit I to detect laser speckles appearing in the monitored area,
the tripod head I is a mounting support frame of a near infrared detector, the near infrared detector I is fixed on the tripod head I, the angle of the near infrared detector I can be adjusted on the tripod head I, the tripod head 1 is connected with the stepping motor I, the stepping motor I is controlled through a driver unit in the tripod head driving unit I, and then the movement of the tripod head I is controlled, and the tripod head I can run on a specific track, so that the monitoring protection range is greatly expanded.
The early warning system main control unit comprises a holder driving unit I, a controller unit I and a warning unit, wherein the holder driving unit I comprises a stepping motor I and a driver unit I, and controls and adjusts the position of a holder I;
the software part of the early warning system is as follows:
the cloud deck control program I controls the cloud deck I to scan according to a specified path;
the method comprises the following steps that an image calculation program I is used for calculating and identifying whether laser interception faculae exist or not;
a listening early warning program for triggering an early warning signal;
the hardware part of the tracking system is as follows:
the near infrared detector II has the same effect as the near infrared detector II, and performs secondary scanning in the scanning monitoring area;
the pan-tilt II has the same action with the pan-tilt I, the near-infrared detector II is fixed on the pan-tilt II, the angle of the near-infrared detector II can be adjusted on the pan-tilt II,
the tracking system comprises a tracking system main control unit, a cradle head driving unit II, a drive unit II and a control unit, wherein the tracking system main control unit comprises a cradle head driving unit II, the cradle head driving unit II comprises a stepping motor II and a driver unit II, and the stepping motor II is connected with the cradle head II and controls and adjusts the position of the cradle head II;
the software part of the tracking system is as follows:
the holder control program II controls the holder II to scan according to a specified path;
the image calculating program II is used for calculating and identifying whether laser interception faculae exist or not;
the laser interception azimuth calculation program is used for carrying out positioning analysis on the laser interception azimuth;
the anti-braking tracking laser eavesdropping system further comprises a main server, wherein all the software is integrated on the main server, the main server is further connected with a display, the near-infrared detector continuously shoots images and transmits the images to the server, the server resolves and identifies whether interception light spots exist or not, if the interception light spots exist, the light spots are displayed on the display, meanwhile, a tracking starting signal is triggered, and if no light spot exists, the laser eavesdropping system continues to scan according to a program path.
The early warning system main control unit still includes microprocessor I, image storage processing unit I and network communication unit I, image storage processing unit I includes storage unit I and image processor I, microprocessor I is responsible for the control cloud platform, converts the image information of I monitoring of near infrared detector that image storage processing unit I was collected simultaneously to network signal and sends to the main server through network communication unit I, feeds back cloud platform position, solves, transmits the image to the main server, and network communication unit is responsible for sending back the server with cloud platform coordinate, image resolving information etc..
The tracking system main control unit further comprises a microprocessor II, an image storage processing unit II and a network communication unit II, the image storage processing unit II comprises a storage unit II and an image processor II, and the microprocessor II converts image information monitored by the near infrared detector II collected by the image storage processing unit II into network signals and sends the network signals to the main server through the network communication unit II.
The invention discloses a using method of a reverse tracking laser eavesdropping system, which comprises the following steps:
s1, scanning and monitoring the monitored area by the near-infrared detector I; near-infrared detector I fixes on cloud platform I, and the angularly adjustable, cloud platform I is connected with step motor I, step motor I is driven by cloud platform drive unit, moves on specific track, scans the shooting in the region of protecting.
S2, uploading image signals, and uploading the monitored picture information to a main server by the early warning main control unit; the near-infrared detector I stores images shot in the monitoring process on the image storage processing unit I, and the microprocessor I uploads cradle head position information, image signals and the like to the main server through the network communication unit I.
S3, processing by the main server, and resolving the identification image signal by the main server; the main server resolves and identifies whether an interception light spot exists through an image resolving program I, if the interception light spot exists, the light spot is displayed on a display, and an early warning signal is triggered through an interception early warning program; simultaneously, the tracking system is started.
S4, issuing an instruction, and issuing the laser early warning signal position to a tracking main control unit by the main server; and the main server issues the laser early warning signal position to the tracking main control unit, and a microprocessor II in the tracking main control unit identifies and analyzes the signal and transmits the position signal to a holder driving unit II.
S5, secondary scanning, wherein the near infrared detector II scans a second laser speckle in the monitored area; the holder driving unit II controls the holder II to move to a specific position, the near-infrared detector II continues to scan a second laser speckle in the monitored area, and image information is transmitted back to the tracking main control unit;
and S6, determining the laser interception position, and resolving and identifying the position of the laser interception source by the main server. The main control unit of the tracking system uploads the secondary scanning image information to the main server, the main server determines the position information of the two laser speckles, specific interception positions are specifically resolved and identified through an interception azimuth resolving program, the interception positions are displayed on a display, and meanwhile, a tracking starting signal is triggered.
The principle of the invention is as follows:
because the laser brightness is very high, when the laser irradiates to the monitoring target, no matter the laser monitoring technology based on the speckle or Doppler principle, the laser speckle field can be generated because the surface roughness of the target is far larger than the laser wavelength. The divergence angle of the speckle field is much larger than the illumination laser and will diverge along a large angle. However, for near-infrared laser, human eyes cannot sense the near-infrared laser, the near-infrared laser can only be detected by a photoelectric detector with a spectral response range covering laser wavelength, and the spectral response of a detector based on a near-infrared band can completely cover the spectral band of the intercepted laser, so that the method is very suitable for anti-laser interception detection. Since there are at least three scattered spots in the laser listening path, the first is at the laser source, the second is on the room glass being listened to, and the third is on the object being listened to. This patent confirms a straight line according to two speckle points to fix a position its laser interception source.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (10)
1. A counterfeit tracking laser eavesdropping system, comprising: the early warning system and the tracking system comprise respective hardware parts and software parts;
the hardware part of the early warning system is as follows:
the system comprises a near infrared detector I, a monitoring unit and a control unit, wherein the near infrared detector I is used for scanning and monitoring a monitored area;
the near infrared detector I is fixed on the holder I, and the angle of the near infrared detector I can be adjusted on the holder I;
the early warning system comprises an early warning system main control unit, wherein the early warning system main control unit comprises a holder driving unit I, the holder driving unit I comprises a stepping motor I and a driver unit I, and the stepping motor I is connected with the holder I and controls and adjusts the position of the holder I;
the software part of the early warning system is as follows:
the cloud deck control program I controls the cloud deck I to scan according to a specified path;
the method comprises the following steps that an image calculation program I is used for calculating and identifying whether laser interception faculae exist or not;
a listening early warning program for triggering an early warning signal;
the hardware part of the tracking system is as follows:
the near infrared detector II is used for scanning the monitored area for the second time;
the holder II is fixed on the near infrared detector II, and the angle of the near infrared detector II can be adjusted on the holder II;
the tracking system comprises a tracking system main control unit, a cradle head driving unit II, a drive unit II and a control unit, wherein the tracking system main control unit comprises a cradle head driving unit II, the cradle head driving unit II comprises a stepping motor II and a driver unit II, and the stepping motor II is connected with the cradle head II and controls and adjusts the position of the cradle head II;
the software part of the tracking system is as follows:
the holder control program II controls the holder II to scan according to a specified path;
the image calculating program II is used for calculating and identifying whether laser interception faculae exist or not;
the laser interception azimuth calculation program is used for carrying out positioning analysis on the laser interception azimuth;
the anti-braking tracking laser eavesdropping system further comprises a main server, the main server is connected with a display, a near-infrared detector continuously shoots images and transmits the images to the main server, the main server resolves and identifies whether an interception light spot exists or not, if the interception light spot exists, the light spot is displayed on the display, and meanwhile, a tracking starting signal is triggered; if no light spot exists, the scanning is continued according to the program path.
2. A retro-tracking laser eavesdropping system according to claim 1, wherein: the early warning system main control unit further comprises a microprocessor I, an image storage processing unit I and a network communication unit I, wherein the image storage processing unit I comprises a storage unit I and an image processor I, and image information monitored by the near infrared detector I collected by the image storage processing unit I is converted into a network signal by the microprocessor I and is sent to a main server through the network communication unit I.
3. A retro-tracking laser eavesdropping system according to claim 1, wherein: the tracking system main control unit further comprises a microprocessor II, an image storage processing unit II and a network communication unit II, the image storage processing unit II comprises a storage unit II and an image processor II, and the microprocessor II converts image information monitored by the near infrared detector II collected by the image storage processing unit II into network signals and sends the network signals to the main server through the network communication unit II.
4. A method of using a retro-tracking laser eavesdropping system according to claim 1, comprising the steps of:
s1, scanning and monitoring the monitored area by the near-infrared detector I;
s2, uploading image signals, and uploading the monitored picture information to a main server by the early warning main control unit;
s3, processing by the main server, and resolving the identification image signal by the main server;
s4, issuing an instruction, and issuing the laser early warning signal position to a tracking main control unit by the main server;
s5, secondary scanning, wherein the near infrared detector II scans a second laser speckle in the monitored area;
and S6, determining the laser interception position, and resolving and identifying the position of the laser interception source by the main server.
5. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S1 comprises the steps of:
near-infrared detector I fixes on cloud platform I, and the angularly adjustable, cloud platform I is connected with step motor I, step motor I is driven by cloud platform drive unit, moves on specific track, scans the shooting in the region of protecting.
6. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S2 comprises the steps of:
the near-infrared detector I stores images shot in the monitoring process on the image storage processing unit I, and the microprocessor I uploads the position information of the holder and image signals to the main server through the network communication unit I.
7. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S3 comprises the steps of:
the main server resolves and identifies whether an interception light spot exists through an image resolving program I, if the interception light spot exists, the light spot is displayed on a display, and an early warning signal is triggered through an interception early warning program; simultaneously, the tracking system is started.
8. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S4 comprises the steps of:
and the main server issues the laser early warning signal position to the tracking main control unit, and a microprocessor II in the tracking main control unit identifies and analyzes the signal and transmits the position signal to a holder driving unit II.
9. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S5 comprises the steps of:
and the holder driving unit II controls the holder II to move to a specific position, the near-infrared detector II continues to scan a second laser speckle in the monitored area, and image information is transmitted back to the tracking main control unit.
10. The method of using a retro-tracking laser eavesdropping system according to claim 4, wherein the step of S6 comprises the steps of:
the main control unit of the tracking system uploads the secondary scanning image information to the main server, the main server determines the position information of the two laser speckles, specific interception positions are specifically resolved and identified through an interception azimuth resolving program, the interception positions are displayed on a display, and meanwhile, a tracking starting signal is triggered.
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| CN106448699A (en) * | 2014-03-05 | 2017-02-22 | 佛山科学技术学院 | Voice audio monitor device |
| CN105573328B (en) * | 2014-11-05 | 2019-02-26 | 北京航天计量测试技术研究所 | Optical tracking/sighting system dynamic parameter calibrating installation and its application method |
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