KR101611696B1 - System and method for position tracking by sensing the sound and event monitoring network thereof - Google Patents
System and method for position tracking by sensing the sound and event monitoring network thereof Download PDFInfo
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- KR101611696B1 KR101611696B1 KR1020140063574A KR20140063574A KR101611696B1 KR 101611696 B1 KR101611696 B1 KR 101611696B1 KR 1020140063574 A KR1020140063574 A KR 1020140063574A KR 20140063574 A KR20140063574 A KR 20140063574A KR 101611696 B1 KR101611696 B1 KR 101611696B1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
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Abstract
A monitoring system and method capable of detecting location by sound and an event monitoring network using the same are disclosed.
A plurality of nodes arranged in a spatially separated position in the event monitoring network, each of which is provided with a surveillance camera and a single acoustic sensor; And a control unit for collecting acoustic signals sensed by a single acoustic sensor installed in each of the plurality of nodes and for generating positions of the acoustic signals using the positions of the plurality of nodes or the height of the single acoustic sensor And a monitoring system for controlling the surveillance camera based on the location of the tracked acoustic signal.
Description
The present invention relates to a monitoring system and method capable of detecting location by sound and an event monitoring network using the same. More particularly, the present invention relates to a monitoring system and method capable of detecting a sound by using an acoustic sensor formed on a plurality of nodes, and an event monitoring network using the same.
Recently, a security surveillance camera capable of rotating at a certain angle in up / down / left / right directions has been installed for security surveillance in a rectangular area where security surveillance is not possible. Security monitoring is possible.
Here, unlike the original intention of the security surveillance system established for the unattended surveillance, when the camera is manually rotated by the administrator, there is an inconvenience that the manager must directly intervene in the security surveillance. If the camera is automatically rotated There is a problem that not only the system operation cost such as the power consumption is increased due to the continuous camera rotation but also there is a dead zone where security monitoring is impossible at some point.
Therefore, it is possible to track the position of the sound source through the camera after detecting the sound generated in the left, right and upper and lower directions with respect to the camera, thereby minimizing the blind spot of security monitoring with a small number of cameras Systems and methods are required.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and apparatus for detecting sound by sensing a sound by a single acoustic sensor formed on a plurality of nodes, System and method, and an event monitoring network using the same.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an image pickup apparatus capable of acquiring image information of an accurate sound source generating position by sensing the sound and moving the tracked position by moving the direction of the surveillance camera, And to provide an event monitoring network using the monitoring system and method.
According to an aspect of the present invention, there is provided an event monitoring network using a monitoring system and method capable of detecting a position of a sound by detecting the sound of the present invention. The event monitoring network includes a monitoring camera and a single acoustic sensor A plurality of nodes in which a plurality of nodes are installed; And a control unit for collecting acoustic signals sensed by a single acoustic sensor installed in each of the plurality of nodes and for generating positions of the acoustic signals using the positions of the plurality of nodes or the height of the single acoustic sensor And a monitoring system for controlling the surveillance camera based on the location of the tracked acoustic signal.
The plurality of nodes may collect the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the plurality of nodes and cooperatively track the generation position of the acoustic signal.
The monitoring system may control to shoot at least one of tilting, panning, zooming in, and zooming out the surveillance camera according to the location of the sound signal. have.
The monitoring system may be installed in any one of the plurality of nodes.
The monitoring system may be installed separately from the plurality of nodes.
The plurality of nodes may be grouped according to the number of preset nodes, and the number of the predetermined nodes in the order of rapid sensing by the single acoustic sensor may be a group.
The plurality of nodes may be grouped to reflect time or ambient noise level.
The plurality of nodes are grouped to track the generation position of the sound signal, and can dynamically group by a reference including at least one of an intention of a manager, a power situation, and a past history.
The monitoring system may collect image signals sensed by a surveillance camera and evaluate the correlation between the image signals and the acoustic signals to determine whether an event has occurred.
According to another aspect of the present invention, there is provided a monitoring system for monitoring a location of a sound by sensing sound, the system comprising: an acoustic signal collecting unit for collecting acoustic signals sensed by a single acoustic sensor installed in each of a plurality of nodes, ; A sound signal generation position tracking unit for tracking a generation position of the acoustic signal using a position of each of the plurality of nodes or a height at which the single acoustic sensor is installed; A camera controller for controlling a surveillance camera installed in each of the plurality of nodes based on the location of the tracked acoustic signal; And an event detector for determining whether an event has occurred based on the collected acoustic signal and the video signal of the surveillance camera.
Wherein the acoustic signal generating position tracking unit collects the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the plurality of nodes arranged at a spatially distant location and cooperatively collects the acoustic signal You can track your location.
The camera control unit may control to shoot at least one of tilting, panning, zooming in, and zooming out the surveillance camera according to the location of the sound signal. have.
Wherein the acoustic signal generating position locating unit groups the plurality of nodes of the predetermined number of nodes in a rapidly detected order by the single acoustic sensor according to a preset number of nodes, The location of the acoustic signal can be tracked based on the signal.
Wherein the acoustic signal generating position locating unit dynamically groups the plurality of nodes according to a criterion including at least one of an intention, a power status, and a past history of the manager, and based on the acoustic signals of the plurality of nodes grouped, Can be tracked.
The event detector may collect the image signal sensed by the surveillance camera and evaluate the correlation between the image signal and the acoustic signal to determine whether an event has occurred.
According to another aspect of the present invention, there is provided a monitoring method for monitoring a location of a sound by sensing sound, the method comprising: collecting an acoustic signal sensed by a single acoustic sensor installed in each of a plurality of nodes; Tracking the generation position of the acoustic signal using the position of each of the plurality of nodes or the height at which the single acoustic sensor is installed; Controlling the surveillance camera based on the location of the tracked acoustic signal; And determining whether an event has occurred based on the collected acoustic signal and the video signal of the surveillance camera.
Wherein the step of tracking the generation position of the acoustic signal collects the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed at each of the plurality of nodes arranged at a spatially separated position, And tracking the generation position of the acoustic signal.
The step of controlling the surveillance camera may include capturing at least one of tilting, panning, zooming in, and zooming out the surveillance camera according to the location of the sound signal. So as to control the operation of the apparatus.
Wherein the step of tracking the generation position of the acoustic signal comprises grouping the plurality of nodes of the number of the predetermined nodes in the order quickly detected by the single acoustic sensor according to the number of preset nodes, The location of the acoustic signal can be tracked based on the acoustic signal of the plurality of nodes.
Wherein the step of tracking the generation location of the acoustic signal includes dynamically grouping the plurality of nodes by a criterion including at least one of an intention of a manager, a power situation, and a past history, And the generation position of the acoustic signal can be tracked based on the acoustic signal.
The step of determining whether the event has occurred may include collecting a video signal sensed by a surveillance camera and evaluating a correlation between the video signal and the acoustic signal to determine whether an event has occurred have.
According to the embodiments of the present invention, the sound is sensed by a single acoustic sensor formed in a plurality of nodes and the position is tracked, thereby detecting sound capable of acquiring image information about the sound source generating position, System and method and event monitoring network using the same.
According to the embodiments of the present invention, it is possible to acquire image information of an accurate sound source generating position by sensing the sound and moving the tracked position by moving the direction of the surveillance camera, thereby detecting sound that can be monitored for a rectangular area A monitoring system and method capable of tracking a location and an event monitoring network using the monitoring system and method can be provided.
FIG. 1 is a view illustrating a conventional surveillance apparatus capable of detecting a position of a sound and detecting the position of the sound.
FIG. 2 is a diagram illustrating an event monitoring network capable of sensing location by sound according to an embodiment of the present invention. Referring to FIG.
FIG. 3 is a view illustrating a monitoring apparatus capable of detecting a position of a sound according to an embodiment of the present invention.
4 is a diagram illustrating an example of grouping a plurality of nodes according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a monitoring system capable of detecting a location of an acoustic sound according to an embodiment of the present invention. Referring to FIG.
FIG. 6 is a diagram illustrating a monitoring method capable of detecting a position of an acoustic sound according to an embodiment of the present invention. Referring to FIG.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a view illustrating a conventional surveillance apparatus capable of detecting a position of a sound and detecting the position of the sound.
Referring to FIG. 1, a surveillance apparatus capable of sensing sound and tracking a location of the surveillance apparatus is generally installed in a
The
The
Accordingly, three
FIG. 2 is a diagram illustrating an event monitoring network capable of sensing location by sound according to an embodiment of the present invention. Referring to FIG.
Referring to FIG. 2, a monitoring device capable of sensing sound and detecting a location is installed in a streetlight or the like, and includes a
The
The
Accordingly, a
The event monitoring network includes a plurality of
A plurality of nodes are arranged at a spatially separated position, and a surveillance camera and a single acoustic sensor may be installed at each node. The plurality of nodes collect the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the nodes, and cooperatively track the generation position of the acoustic signal. Herein, the plurality of nodes can group the sound generation locations according to the number of preset nodes, and the number of the predetermined nodes in the order of the rapid sensing by the single acoustic sensor can form a group. In this case, it is preferable that the plurality of nodes track the generation position of the acoustic signal by the plurality of three or more nodes. If more than four nodes are used, more accurate distances can be calculated, It is also possible to track the sound generation position and display it on the coordinates.
Moreover, a plurality of nodes can form a group reflecting the time or the degree of ambient noise. For example, it is preferable to select a plurality of nodes at a close range because noise is generally large during the day, Therefore, a plurality of nodes at a distance can be selected and grouped. The plurality of nodes are grouped to track the generation position of the sound signal, and may include at least one of a power state depending on whether the intention or power of the manager is sufficiently supplied, So that more accurate sound generation position can be tracked. As the number of nodes participating in the position tracking increases, the tracking of the sound generation position becomes more accurate. Therefore, it is desirable to increase the number of the nodes where the event occurrence frequency is high.
Here, the event can be a crime, an accident, or the like, and it can be determined whether or not the event is generated by voice and image such as a collision sound, a scream, an explosion sound, and a crack of a window.
The monitoring system collects acoustic signals sensed by a single acoustic sensor installed in each of the plurality of nodes and tracks the generation position of the acoustic signal using the height of each of the plurality of nodes or the height of a single acoustic sensor , The surveillance camera can be controlled based on the location of the tracked acoustic signal. The monitoring system may be installed in any one of a plurality of nodes, or may be installed separately from a plurality of nodes.
In addition, the monitoring system can broaden the surveillance range by turning the surveillance camera up, down, left and right by the function of tilting and panning according to the location of the sound signal, zooming in and zooming out, it is possible to control the sound to be photographed even in the case of a sound sensed at a long distance and to closely observe it. Such a surveillance camera can be used as a position control device of a camera through detection of sound, and a user can artificially operate the position and zoom function of the camera in up and down directions. Here, tilting is a method in which the camera moves up and down along a moving object and vertically. Panning is a method of photographing a wide range by moving the camera horizontally along the moving object and photographing horizontally.
The monitoring system collects the video signal sensed by the surveillance camera and evaluates the correlation between the video signal and the audio signal to determine whether the event has occurred. Here, the degree of correlation can be determined by the occurrence of the same position of the event occurrence, a previously stored image pattern (collision pattern, existence of a person, etc.), and a previously stored voice pattern (collision speech pattern, screaming sound, etc.).
For example, [Table 1] is a table (on a scale of 10 out of 10) showing an example of correlation evaluation in which event occurrence can be determined.
Score
Score
Score
Score
Correlation
As described above, the score can be given according to the acoustic signal, the video signal, the temporal coincidence, and the spatial position, and the correlation can be evaluated by calculating an average according to the score, and it is possible to determine whether an event has occurred according to the correlation.
Here, the second correlation and the third correlation are compared with the first correlation score, and it can be determined that the event is generated because a high score is given. The third correlation is compared with the second correlation, Since the score is high, it is possible to more reliably determine the occurrence of the event, and in an area where the event occurrence frequency is high, or when the event occurrence is high, an environment more suitable for the position tracking can be created.
Accordingly, the
FIG. 3 is a view illustrating a monitoring apparatus capable of detecting a position of a sound according to an embodiment of the present invention.
3 (a) shows a configuration in which a monitoring system is installed in a node such as a streetlight, and the
3 (b) is a diagram illustrating a configuration in which a monitoring system is installed separately from a node such as a streetlight. The
4 is a diagram illustrating an example of grouping a plurality of nodes according to an embodiment of the present invention.
4 (a) is a diagram illustrating an example in which one grouping is formed in a plurality of nodes. Referring to FIG. 4A, a plurality of
4B is a diagram illustrating an example in which a plurality of groupings are formed in a plurality of nodes. Referring to FIG. 4B, a plurality of
FIG. 5 is a diagram illustrating a monitoring system capable of detecting a location of an acoustic sound according to an embodiment of the present invention. Referring to FIG.
5, the monitoring system 500 may include a sound
The acoustic
The acoustic signal generating position locating unit 520 may track the generation position of the acoustic signal using the position of each of the plurality of nodes or the height of the single acoustic sensor. The acoustic signal generation position tracking unit 520 collects the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the plurality of nodes disposed at a spatially separated position, The location of the acoustic signal can be tracked.
Here, the acoustic signal generating position locator 520 may group the plurality of nodes of the predetermined number of nodes in the order quickly detected by the single acoustic sensor according to the preset number of nodes, The location of the acoustic signal can be tracked based on the acoustic signals of the plurality of grouped nodes. In addition, the acoustic signal generating position locator 520 may dynamically group the plurality of nodes according to a criterion including at least one of an intention of a manager, a power situation, and a past history, and generate the acoustic signals of the plurality of groups It is possible to trace the generation position of the sound signal based on the sound signal.
The camera control unit 530 may control the surveillance cameras installed in each of the plurality of nodes based on the location of the tracked sound signal. Here, the camera control unit 530 can broaden the monitoring range by a method of tilting and panning the surveillance camera according to the location of the sound signal, and zooming in. , And zoom out function, it is possible to observe more closely by controlling the image to be taken even in the case of a sound detected at a long distance. Such a surveillance camera can be used as a position control device of a camera through detection of sound, and a user can artificially operate the position and zoom function of the camera in up and down directions.
The event detection unit 540 can determine whether an event has occurred based on the collected sound signal and the video signal of the surveillance camera. Also, the event detection unit may collect the image signal sensed by the surveillance camera, and evaluate the correlation between the image signal and the sound signal to determine whether an event has occurred. At this time, a table for correlation evaluation can be used.
FIG. 6 is a diagram illustrating a monitoring method capable of detecting a position of an acoustic sound according to an embodiment of the present invention. Referring to FIG.
In
In
In
In
In
Accordingly, it is possible to detect a sound to determine the location of a sound, and to photograph the image using a surveillance camera, thereby minimizing the security blind spot with a small number of cameras, and implementing and operating a more efficient surveillance camera system at a low cost .
The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, controller, arithmetic logic unit (ALU), digital signal processor, microcomputer, field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing apparatus may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.
The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.
The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.
Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.
100: Streetlight 110: Microphone
120, 220, 320:
210, 310:
410, 411, 412: Event occurs 420, 421, 422: Grouping
510: Acoustic signal collection unit 520: Acoustic signal generation position tracking unit
530: Camera control unit 540: Event detection unit
Claims (21)
A plurality of nodes arranged at a spatially separated position, each of which is provided with a surveillance camera and a single acoustic sensor; And
The method comprising the steps of: collecting acoustic signals sensed by a single acoustic sensor installed in each of the plurality of nodes; tracking a generation position of the acoustic signals using a position of each of the plurality of nodes or a height of the single acoustic sensor; And a monitoring system for controlling the surveillance camera based on the location of the tracked acoustic signal,
/ RTI >
The plurality of nodes
The acoustic signals are grouped by the single acoustic sensor into the number of preset nodes based on the order in which the acoustic signals are quickly detected,
The monitoring system
And collecting the intensity and the arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the grouped nodes of the plurality of nodes to cooperatively track the generation position of the acoustic signal.
The monitoring system
And controlling to shoot at least one of tilting, panning, zooming in, and zooming out of the surveillance camera in accordance with the location of the sound signal
An event monitoring network.
The monitoring system
Being installed in any one of the plurality of nodes
An event monitoring network.
The monitoring system
Installed separately from the plurality of nodes
An event monitoring network.
The plurality of nodes
Grouping to reflect time or ambient noise level
An event monitoring network.
The plurality of nodes
Groups of sound signals are generated, and the groups are dynamically grouped according to criteria including at least one of an intention of a manager, a power situation, and a past history
An event monitoring network.
The monitoring system
Collecting the video signal sensed by the surveillance camera, and evaluating a correlation between the video signal and the acoustic signal to determine whether an event has occurred
An event monitoring network.
An acoustic signal collector for collecting acoustic signals sensed by a single acoustic sensor installed in each of the plurality of nodes;
A sound signal generation position tracking unit for tracking a generation position of the acoustic signal using a position of each of the plurality of nodes or a height at which the single acoustic sensor is installed;
A camera controller for controlling a surveillance camera installed in each of the plurality of nodes based on the location of the tracked acoustic signal; And
An event detection unit for determining whether an event has occurred based on the collected sound signal and the video signal of the surveillance camera,
Lt; / RTI >
The acoustic signal generating position tracking unit
Grouping the plurality of nodes into a predetermined number of nodes based on an order in which the acoustic signals are quickly detected by the single acoustic sensor,
Collecting intensity and arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the grouped nodes of the plurality of nodes and cooperatively tracking the generation position of the acoustic signal.
The camera control unit
And controlling to shoot at least one of tilting, panning, zooming in, and zooming out of the surveillance camera in accordance with the location of the sound signal
The monitoring system comprising:
The acoustic signal generating position tracking unit
Dynamically grouping the plurality of nodes based on a criterion including at least one of an intention of a manager, a power situation, and a past history, and tracking the generation position of the acoustic signal based on the acoustic signals of the plurality of nodes grouped
The monitoring system comprising:
The event detection unit
Collecting the video signal sensed by the surveillance camera, and evaluating a correlation between the video signal and the acoustic signal to determine whether an event has occurred
The monitoring system comprising:
Collecting an acoustic signal sensed by a single acoustic sensor installed in each of the plurality of nodes;
Tracking the generation position of the acoustic signal using the position of each of the plurality of nodes or the height at which the single acoustic sensor is installed;
Controlling the surveillance camera based on the location of the tracked acoustic signal; And
Determining whether an event has occurred based on the collected sound signal and the video signal of the surveillance camera
Lt; / RTI >
The step of tracking the generation position of the acoustic signal
Grouping the plurality of nodes into a predetermined number of nodes based on an order in which the acoustic signals are quickly detected by the single acoustic sensor; And
Collecting the intensity and arrival angle of the acoustic signal sensed by the single acoustic sensor installed in each of the grouped nodes of the plurality of nodes and cooperatively tracking the generation position of the acoustic signal
≪ / RTI >
The step of controlling the surveillance camera
Controlling at least one of tilting, panning, zooming in, and zooming out of the surveillance camera according to a location of the sound signal;
The method comprising the steps of:
The step of tracking the generation position of the acoustic signal
Dynamically grouping the plurality of nodes by a criterion including at least one of an intent of the manager, a power situation, and a past history,
And tracking the generation position of the acoustic signal based on the acoustic signals of the plurality of groups of nodes
.
Wherein the step of determining whether the event has occurred
Collecting the video signal sensed by the surveillance camera, evaluating a correlation between the video signal and the acoustic signal, and determining whether an event has occurred
The method comprising the steps of:
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JP2006003941A (en) * | 2004-06-15 | 2006-01-05 | Fuji Electric Systems Co Ltd | Emergency report system |
WO2012046899A1 (en) | 2010-10-08 | 2012-04-12 | 엘지전자 주식회사 | Image-monitoring device and method for detecting events therefor |
KR101396888B1 (en) | 2013-03-06 | 2014-05-20 | 국방과학연구소 | Sensor network and target detection decision method thereof |
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KR101218360B1 (en) * | 2011-03-15 | 2013-01-03 | 삼성테크윈 주식회사 | Security system and method of controlling thereof |
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JP2006003941A (en) * | 2004-06-15 | 2006-01-05 | Fuji Electric Systems Co Ltd | Emergency report system |
WO2012046899A1 (en) | 2010-10-08 | 2012-04-12 | 엘지전자 주식회사 | Image-monitoring device and method for detecting events therefor |
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