KR101434878B1 - Monitering camera system - Google Patents

Abstract

A monitoring camera system according to an embodiment of the present invention includes a monitoring camera module having a variable photographing direction and having a function of enlarging or reducing a subject; a plurality of embedded sensors located adjacent to the monitoring camera module for outputting embedded detection signals; and a plurality of field sensors located in a monitoring field spaced apart from the monitoring camera module for outputting field detection signals. The monitoring camera module performs a first monitoring photographing operation of determining an event area in which an event is generated from the embedded detection signals and the field detection signals and changing the photographing direction toward the event area, and performs a second monitoring photographing operation of calculating a photographing distance by analyzing the field detection signals and the embedded detection signals and enlarging or reducing the event area based on the calculated photographing distance.

Description

{MONITERING CAMERA SYSTEM}

The present invention relates to a surveillance camera system, and more particularly, to a surveillance camera system having an active surveillance function.

Generally, in a place where security monitoring is required such as a bad zone, a school zone, a financial institution, a government office, an apartment, or the like, various sensors may be installed to report any movement or sound to a control agent, A series of security surveillance systems are installed to install a camera, store and manage the camera images in a separate database (D / B), and monitor camera images through a monitor screen.

However, in the case of security monitoring using a sensing sensor, the range that can be detected is very limited due to the characteristics of the sensor. In particular, in the case of a manager who has been informed that abnormal movements or sounds are detected, It is inconvenient to directly check the surroundings of the place where the detection sensor is installed or to check the camera by turning the camera by manual operation since it is not known exactly whether it is due to a dog, cat, pigeon or the like.

In the case of security surveillance using a camera, there is an advantage in that a surveillance camera can be installed at a path or location where an intruder may be expected, Since the angle of shooting is limited, there may be a rectangular area where security monitoring is not possible even if a plurality of cameras are installed, and a camera for security surveillance can be installed. Manually by the administrator or automatically rotating the camera by a set angle It is inconvenient for the manager to intervene in the security surveillance in case of rotating the camera by manual operation of the manager. In case of rotating the camera automatically, Rotation causes a lot of power consumption. There is a problem that a system operation cost of the system is increased and a dead zone where security monitoring can not be performed at a certain point due to the rotation is inevitable.

In recent years, a rotating surveillance camera and a plurality of microphones have been installed to compare patterns of ambient sounds or sound pressure, or images are taken by rotating the camera in the direction of the sensor with the maximum stimulus. However, Due to the characteristics, it is very difficult to calculate accurate position and distance due to a lot of noises and frequent events in the urban area. In particular, it is impossible to automatically adjust the focus at nighttime, which makes it difficult to shoot clear and accurate images and pictures.

In addition, there is a problem that rapid acquisition and photographing of a surveillance site are delayed due to various calculation processes for calculating accurate positions and distances.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a surveillance camera system capable of quickly and accurately capturing an event occurrence area.

According to an aspect of the present invention, there is provided a surveillance camera system comprising: a surveillance camera module having a function of varying a photographing direction and enlarging and reducing a subject; A plurality of built-in sensors located adjacent to the surveillance camera module and outputting built-in detection signals; And a plurality of field sensors located at a monitoring site spaced apart from the monitoring camera module and outputting a field sensing signal, wherein the monitoring camera module includes an event area in which an event is generated from the built-in sensing signal and the field sensing signal And a control unit for performing a first surveillance photographing operation for determining the photographing direction and changing the photographing direction into the event area, analyzing the scene detection signal and the built-in detection signal to calculate a photographing distance, and enlarging the event area based on the calculated photographing distance Or the second surveillance photographing.

In one embodiment, the built-in sensors and the field sensors may output a motion detection signal by sensing movement of an object, or may output a sound detection signal by sensing a sound.

In one embodiment, the built-in sensors may be disposed at four angular intervals of 90 degrees on each side of the surveillance camera module.

In one embodiment, the shooting distance may be the distance from the surveillance camera module to the event area.

In one embodiment, the surveillance camera module includes: a sensor management unit for managing the built-in sensing signal received from the built-in sensors and the field sensing signal received from the field sensors; An arithmetic processing unit for calculating the imaging direction and the imaging distance by calculating the built-in detection signal and the field detection signal; A camera driver for driving the camera module; And a communication controller for externally transmitting and receiving the built-in sensing signal, the field sensing signal, and photographed image information.

In one embodiment, the arithmetic processing unit may determine the photographing direction to an area where the on-site sensor, of which the motion detection signal is first detected, among the on-site sensors is located.

In one embodiment, the operation processing unit determines whether a volume (decibel) of at least one sound detection signal among the plurality of sound detection signals corresponding to the field sensors is equal to or greater than a reference value, and determines a volume of the sound detection signals, The photographing direction can be determined to the area where the field sensor outputting the largest sound detection signal is located.

In one embodiment, the calculation processing unit may calculate the shooting distance from a plurality of sound detection signals corresponding to the on-site sensors and the built-in sensors using Time Difference Of Arrival (TDOA) have.

In one embodiment, the camera driver may drive the surveillance camera module to perform the second surveillance photograph by applying a preset zoom magnification and focus corresponding to the imaging distance.

In one embodiment, the system may further include a security monitoring controller for performing various system operation information and application programs for sensor management, remote camera driving, alarm generation, and security monitoring operations and for processing image information received from the monitoring camera module have.

In one embodiment, a monitor that displays video information shot by a plurality of surveillance camera modules on a surveillance screen and displays the video of the surveillance camera module on a full screen accompanied by a flicker function .

In one embodiment, the system may further include a database unit for storing the built-in sensing signal, the field sensing signal, and image information captured by the monitoring camera module.

According to the embodiment of the present invention, the first surveillance photographing is performed for the event area quickly, and the second surveillance photographing for precisely photographing the enlarged or reduced event area by comprehensive analysis of the detection signal is performed, First, you can quickly and quickly capture, and then accurately and precisely judge the situation on the spot with precisely focused precision shot images.

1 is a schematic block diagram of a surveillance camera system according to an embodiment of the present invention.
2 is a flowchart of a surveillance camera system according to an embodiment of the present invention.
Figure 3 is an illustration of a surveillance camera system deployed at a surveillance site.
4A and 4B are diagrams for explaining the photographing direction determination of the surveillance camera system.
5 is a diagram for explaining the determination of the shooting distance of the surveillance camera system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

Further, the expressions in the following drawings are exaggerated for convenience and clarity of description, and the same reference numerals are used for the same elements in the drawings. As used herein, the term "and / or" includes any and all combinations of any of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Although the terms first, second, etc. are used herein to describe various elements, components, regions and / or portions, it should be understood that these elements, components, regions, and / Do. These terms are only used to distinguish one member, component, region or portion from another region or portion. Accordingly, the first member, component, region or portion described below may refer to a second member, component, region or portion without departing from the teachings of the present invention.

1 is a schematic block diagram of a surveillance camera system according to an embodiment of the present invention.

1, the surveillance camera system includes on-site sensors 100-1 to 100-n, built-in sensors 200-1 to 200-4, a surveillance camera module 200, a security surveillance control unit 300, A monitor 400 and a database unit 500.

The field sensors 100-1 through 100-n are located at a monitoring site remote from the monitoring camera module 200 and output a field detection signal. Each of the on-site sensors 100-1 to 100-n may detect an expected path or location (for example, a back alley, a dark spot, a bad spot, a school zone, etc.) And when a motion or a sound of an object is detected within a predetermined distance, a corresponding on-site detection signal is generated and transmitted to the surveillance camera module 200.

The built-in sensors 200-1 to 200-4 are located adjacent to the surveillance camera module 200 and output a built-in sensing signal. For example, each of the built-in sensors 200-1 through 200-4 may be disposed at four angular intervals of 90 degrees on the four sides of the surveillance camera module 200. The field sensors 100-1 to 100-n and the built-in sensors 200-1 to 200-4 are for sensing the motion or sound of an object, and may include a photo sensor, a microphone, .

In the present embodiment, a surveillance camera system composed of seven sensors 100-1 to 100-3, 200-1 to 200-4 and one surveillance camera module 200 is illustrated, but the on-site sensors 100-1 To 100-3, the built-in sensors 200-1 to 200-4, and the surveillance camera module 200 may be increased or decreased as needed.

Each of the sensors 100-1 to 100-n and 200-1 to 200-4 and the surveillance camera module 200 may be implemented to operate in a wired and / or wireless manner. In order to implement a wired connection, A wired interface unit (not shown) for providing serial communication such as the -4xx method or a CAN (Control Area Network) bus method is required. In order to implement the wireless interface method, a Bluetooth A wireless interface unit for providing a wireless communication function is required. Since the configuration of the wired or wireless communication interface unit is generally known, a detailed description will be omitted.

The surveillance camera module 200 has a function of varying the photographing direction and enlarging and reducing a subject. The surveillance camera module 200 is a camera capable of rotating in the up, down, left, and right directions, and is a camera for detecting normally from the field sensors 100-1 to 100-n and the built-in sensors 200-1 to 200-4 When there is no input of a signal, the real-time image shooting function can be sequentially performed on a route or a position where a predetermined event occurrence is expected through rotation movement in the up / down / left / right direction.

The surveillance camera module 200 determines an event area where an event is generated from the scene detection signal and performs a first surveillance photographing to change the shooting direction to the event area. Then, the scene sensing signal and the built-in sensing signal are analyzed to calculate the shooting distance, and the second monitoring shooting is performed to enlarge or reduce the event area based on the calculated shooting distance. Here, the photographing direction refers to a direction or angle from the surveillance camera module 200 toward the event area, and the photographing distance may be defined as a distance from the surveillance camera module 200 to the event area.

In one embodiment, the surveillance camera module 200 may include a sensor management unit 210, an operation processing unit 220, a camera driving unit 230, and a communication control unit 240.

The sensor management unit 210 manages the field sensing signals received from the field sensors 100-1 through 100-n and the internal sensing signals received from the built-in sensors 200-1 through 200-4. The sensor management unit 210 drives each of the sensors 100-1 to 100-n and 200-1 to 200-4 associated with the sensor for security surveillance and drives the sensors 100-1 to 100-n, 200-1 to 200-4. When at least one sensing signal is input, the input sensing signal is analyzed to determine the type of the sensing signal. Then, information about the type of the sensing signal is input to the sensor identification And reports it to the operation processing unit 220 together with the number.

The operation processing unit 220 calculates a built-in sensing signal and a field sensing signal to determine a photographing direction and a photographing distance. Specifically, the operation processing unit 220 determines a photographing direction to an area where the on-site sensors of the on-scene sensors 100-1 to 100-n are detected. For example, when any sound detection signal is detected, it is determined whether the volume (decibel) of the sound detection signal is equal to or greater than the reference value, and the photographing direction is set to an area where the field sensor outputting the sound detection signal is located. Since a too weak sound detection signal may be noise or sounds at a long distance from the monitored area, it is preferable that a reference value is set. The reference value of the sound detection signal can be determined statistically and experimentally. If a plurality of sound detection signals are detected, it is determined whether the volume of each sound detection signal is equal to or greater than a reference value. If the volume of the sound detection signals is equal to or greater than the reference value, Direction is set.

The operation processing unit 220 analyzes the sensing signals input from the sensors 100-1 to 100-n and 200-1 to 200-4 to check the type of the sensing signals, The camera driving command may be transmitted so that the first monitoring imaging is performed first in the direction of the sensor in which the motion detection signal is input. The operation processing unit 220 receives the difference between the size of the decibel (dB) received from each of the sensors 100-1 to 100-n and 200-1 to 200-4 at the time of inputting the sound detection signal, The driving direction can be determined and the driving command can be transmitted to the camera driving unit 230 so that the first monitoring imaging is performed.

Next, the calculation processing unit 220 calculates a time difference of arrival (OFDM) from a plurality of sound detection signals corresponding to the sensors 100-1 to 100-n and 200-1 to 200-4, TDOA). That is, the operation processing unit 220 calculates the time difference of sound received by each of the sensors 100-1 to 100-n and 200-1 to 200-4 to determine the distance of the event occurrence point, A driving command is sent to the camera driving unit 230 to perform a second surveillance shot to enlarge or reduce an area, thereby shortening the automatic focus adjustment time due to dim lighting at night.

As described above, the surveillance camera system according to the present invention performs the first surveillance photographing on the event area quickly, and performs the second surveillance photographing for comprehensive analysis of the detection signal to enlarge or reduce the event area, Quickly and quickly capture, the enlarged or reduced image can be used to judge the situation of the site comprehensively and precisely.

The camera driving unit 230 may include a motor for driving the monitoring camera module 200 and various gear devices. The camera driver 230 drives the surveillance camera module 200 so that the first surveillance camera 230 can perform upward, downward, leftward, rightward, or rotationally movement in the photographing direction during the first surveillance photographing. In performing the second surveillance photographing, And the focus is applied to drive the surveillance camera module 200. For example, the camera driver 230 calculates the data received from the sensors 100-1 through 100-n and 200-1 through 200-4, And moves the monitoring camera module 200 according to the command. In addition, the surveillance camera module 200 can be moved up / down / left / right by a certain angle in accordance with a camera rotation drive command of the security monitoring controller 300 described later.

The communication control unit 240 is a communication interface unit for transmitting / receiving the built-in sensing signal, the field sensing signal and the photographed image information to / from the outside. The communication control unit 240 controls the communication controller 240, The camera driving unit 230 receives the camera driving instruction from the security monitoring control unit 300 and transmits the image information captured by the module 200 to the security monitoring control unit 300 and the database (D / B) And the like. For example, the communication control unit 240 may be connected to the security monitoring and control unit 300 at a remote location through an intranet or an Internet network to transmit and receive various information.

The security monitoring control unit 300 performs various system operation information and application programs for sensor management, remote camera driving, alarm generation, and security monitoring operations, and processes image information received from the monitoring camera module 200. The security monitoring and controlling unit 300 accesses the database unit 500 and controls the sensor management unit 210 and the camera driving unit 230 installed in the security camera module 200 using the data Data of the control information storage unit. And collects image information transmitted through each camera and stores and manages the image information in a database (D / B) unit 500, and can also perform a role of an operation processing unit 220 . That is, when the type of the sensor sensing signal currently sensed by the sensor management unit 210 and the sensor identification number to which the sensing signal is inputted are reported from the sensor supervisory control unit 300, And transmits the calculated camera rotation direction and rotation angle information to the surveillance camera module 200 so as to cause the camera driving unit 230 to rotate the camera photographing direction in the direction in which the movement of the current object is detected The camera rotation driving can be controlled.

The security monitoring control unit 300 stores and manages the current camera photographing direction information in the database unit 500 to control the camera rotation driving and controls the camera driving unit 230 to rotate the monitor camera module 200 The controller 500 stores and manages the current camera photographing direction information according to the rotation movement in the database unit 500 on the basis of the reference photographing direction. In addition, the security monitoring control unit 300 detects the types of the sensing signals sensed by the sensors 100-1 to 100-n and 200-1 to 200-4 from the sensor management unit 210, When the inputted sensor identification number is reported, the control information storage unit of the database unit 500 is accessed to extract the camera rotation control information corresponding to the reported sensor detection signal type and the sensor identification number and the current camera photographing direction information, The rotation direction and the rotation angle of the surveillance camera module 200 can be calculated based on the extracted camera rotation control information and the current camera photographing direction information.

However, the surveillance camera module 200 can perform a PTZ (Pan / Tilting / Zoom) function by itself to capture and transmit an event area without being controlled by the security monitoring controller 300. For example, the surveillance camera module 200 may perform real-time image capture sequentially or periodically on a predetermined path or position as a general monitoring function.

The security monitoring controller 300 divides and displays the image information transmitted through the plurality of surveillance camera modules 200, which are not normally input with the sensing signal, on the monitor 400. The sensor manager 300 of the specific surveillance camera module 200 (Flicker) function of the surveillance camera module 200 that captures an event occurrence point on the divided screen of the monitor 400 while generating an alarm when receiving the event generation signal from the monitor camera module 210 .

The monitor 400 divides and displays the image information photographed by the plurality of the surveillance camera modules 200 on the surveillance screen under the control of the security surveillance control unit 300 and displays the image of the surveillance camera module 200 Flicker (flicker) is displayed on the full screen accompanied by the function. The monitor 400 may be implemented in the form of a cathode ray tube (CRT), a plasma display panel (PDP), a digital light processing (DLP), a surface-conduction electron-emitter display (SED) have. The type, position, shape and size of the monitor 400 can be variously modified as needed, and the present invention is not limited thereto.

The database unit 500 is an information storage device in which an internal sensing signal, a field sensing signal, and image information captured by the surveillance camera module 200 are stored. For example, the database unit 500 includes a system information storage unit (not shown) storing various system operation information and application programs for sensor management, camera operation, and security surveillance operations, A control information storage unit (not shown) for storing camera rotation control information for each sensor detection signal and sensor identification number based on the photographing direction, and camera photographing direction information changed in accordance with the camera rotation, And an image information storage unit (not shown) for storing image information photographed by the image display unit.

FIG. 2 is a flowchart of a surveillance camera system according to an embodiment of the present invention, FIG. 3 is an exemplary view of a surveillance camera system disposed at a surveillance site, FIGS. 4A and 4B are views And Fig. 5 is a diagram for explaining the determination of the shooting distance of the surveillance camera system.

2 and 3, in a state where a plurality of sensors 100-1 to 100-n, 200-1 to 200-4 and at least one surveillance camera module 200 are installed, The controller 300 activates the overall security monitoring function when the preset security monitoring time is reached and the sensor management unit 210 detects the sensor 100-1 to 100-n, 200- 1 to 200-4 so that the camera driving unit 230 drives the surveillance camera module 200 interlocked with the surveillance camera 230 to perform video surveillance for security surveillance (S100).

At this time, the surveillance camera module 200 performs real-time image capturing of an area within a predetermined photographing angle by each camera driving unit 230. The image information captured by the surveillance camera module 200 is transmitted to the communication control unit 240 to the security monitoring controller 300 in a wired or wireless manner.

Next, the security monitoring control unit 300 collects image information captured by each of the surveillance camera modules 200 and transmitted through the corresponding communication control unit 240, and transmits it to the image information storage unit of the database unit 500 And simultaneously stores and manages the collected image information on the screen of at least one monitor 400 to provide a security monitoring service at step S200.

Next, during the security monitoring service, the sensors 100-1 to 100-n and 200-1 to 200-4 installed at the paths or locations where event occurrence is expected to perform a predetermined sensing operation, When a movement or a sound of an object is detected within a predetermined distance, a corresponding sensing signal is generated and output to the sensor management unit 210 (S300).

Next, the sensor management unit 210 confirms whether the sensor sensing signals are input from the sensors 100-1 to 100-n and 200-1 to 200-4, and the field sensors 100-1 to 100- n, the input field detection signal is analyzed to determine whether the type of the detection signal is a motion detection signal (S400).

Specifically, the sensor management unit 210 reports information on the type of the field sensing signal to the security monitoring controller 300 together with the sensor identification number to which the sensing signal is input. The security monitoring control unit 300 accesses the control information storage unit of the database unit 500 and reports the type of the sensed field sensing signal to the security monitoring control unit 300 The camera rotation control information corresponding to the type of the scene detection signal and the sensor identification number and the current photographing direction information of the surveillance camera module 200 to be the rotation control object are extracted and the extracted camera rotation control information and the current camera photographing direction information The rotation direction and the rotation angle of the surveillance camera module 200 are calculated.

After calculating the rotation direction and the rotation angle necessary for the camera rotation control, the security monitoring control unit 300 transmits the calculated camera rotation direction and rotation angle information to the camera driving unit 230 of the surveillance camera module 200 And stores the current camera photographing direction information corresponding to the rotation movement of the corresponding surveillance camera module 200 in the control information storage unit of the database unit 500.

The camera driving unit 230 drives the monitoring camera module 200 in the up / down / left / right directions according to the camera rotation control of the security monitoring controller 300, that is, according to the camera rotation direction and rotation angle information received from the security monitoring controller 300 The first surveillance photographing is performed by rotating the photographing direction of the surveillance camera module 200 in the direction in which the movement of the object is sensed by the site sensors 100-1 to 100-n S500).

For example, as shown in FIG. 3, when the surveillance camera module 200 captures an image for a specific area, the sensor 100-2 generates a sensing signal corresponding to the sensed object motion, The sensor management unit 210 analyzes the input sensed signal to confirm that the type of the sensed signal is a motion sensing signal and then transmits information about the type of the sensed signal to the sensor identification And notifies the security monitoring controller 300 of the occurrence of a motion detection signal in the sixth sensor 100-2.

Thereafter, the security monitoring control unit 300 accesses the control information storage unit of the database unit 500 according to the report that the sixth sensor 100-2 has generated a motion detection signal from the sensor management unit 210, The camera rotation control information corresponding to the signal type and the sensor identification number, and the current photographing direction information of the surveillance camera module 200 to be the rotation control object. At this time, the control information storage unit of the database unit 500 Since the sensor 100-2 has reported that a motion detection signal has been generated, the camera rotation control information for rotating the monitoring camera module 200 by a predetermined angle in the right direction according to a predetermined value is extracted, The current photographing direction information of the surveillance camera module 200 to be the rotation control object is extracted. At this time, the surveillance camera module 200 extracts the initial photographing direction information because it is a photographing state for a specific area.

Then, the security monitoring controller 300 calculates the camera rotation direction and the rotation angle based on the extracted camera rotation control information and the current camera photographing direction information. At this time, the surveillance camera module 200 maintains the initial photographing direction Therefore, the camera rotation direction and the rotation angle that the surveillance camera module 200 should be rotated to the right by a predetermined angle are calculated.

Then, the security monitoring controller 300 transmits the camera rotation direction and rotation angle information, that is, the camera rotation control information for rotating the monitoring camera module 200 to the right direction by a predetermined angle, to the camera driving unit 230 At the same time, the current camera photographing direction information corresponding to the rotation movement of the surveillance camera module 200 is stored in the control information storage unit of the database unit 500.

The camera driver 230 rotates the surveillance camera module 200 to the right by a predetermined angle in accordance with the camera rotation control of the security monitoring controller 300 so that the movement of the object is detected by the sensor # It is possible to take an image of the region where the sixth sensor 100-2 is located.

For example, while the surveillance camera module 200 is capturing an image for a specific area, the first sensor 200-1, the second sensor 200-2, the fourth sensor 200-4, The sensor 100-2 generates a sound detection signal corresponding to the detected sound, and outputs the sound detection signal to the sensor management unit 210 (S600).

Next, the sensor management unit 210 analyzes the inputted sensor sensing signal and confirms that the type of the sensor sensing signal is the sound sensing signal. Then, the sensor management unit 210 supplies information on the type of the sensing signal to the sensor identification number And reports it to the operation processing unit 220 and the security monitoring control unit 300 (S710).

Thereafter, the security monitoring control unit 300 receives the first sensor 200-1, the second sensor 200-2, the fourth sensor 200-4, and the sixth sensor 200-2 from the sensor management unit 210 , It is possible to access the control information storage unit of the database unit 500 and to transmit the camera rotation control information corresponding to the reported sound detection signal and the sensor identification number, Since the control information storage unit of the database unit 500 has reported that the sound signal has been detected, the current photographing direction of the surveillance camera module 200, which is the object of the rotation control, Information is extracted.

Then, the security monitoring control unit 300 transmits the extracted camera rotation control information and the current camera photographing direction information to the operation processing unit 320 in the camera.

4A and 4B, the operation processing unit 220 includes a first sensor 200-1, a second sensor 200-2, a fourth sensor 200-4, and a sixth sensor 100-2 ) Of the surveillance camera module 200 received from the security monitoring controller 300 and the current control information of the surveillance camera module 200 received from the security surveillance controller 300, The photographing direction is determined by comparing the camera photographing direction information (S720).

Then, the camera driving unit 230 rotates the photographing direction of the surveillance camera module 200 in the determined photographing direction to perform the first surveillance photographing of the event occurrence point S (S730).

Next, the operation processing unit 220 detects the sound received from the first sensor 200-1, the second sensor 200-2, the fourth sensor 200-4, and the sixth sensor 100-2 And calculates the distance between the surveillance camera module 200 and the event occurrence point S (S740).

Referring to FIG. 5, the operation processing unit 220 receives from the first sensor 200-1, the second sensor 200-2, the fourth sensor 200-4, and the sixth sensor 100-2 The photographing distance R can be calculated from the detected sound detection signals by the time difference of arrival (TDOA) method. The arrival time difference position measurement method is an algorithm for tracking backward the origin of a sound wave or propagation source by calculating a time difference in receiving by receiving a sound wave or a radio wave at various positions.

Next, the operation processing unit 220 transmits a drive command to the camera driver 230 in the up-and-down, zoom-in, and preset focus, thereby shortening the focus automatic adjustment time due to dim light at night, A second surveillance photographing is performed to accurately photograph the generation point S (S750).

In step S200, the surveillance camera module 200 performs a real-time image capturing for a region within a certain angle in the direction in which the surveillance camera module 200 is rotated. And collects the image information transmitted through the communication control unit 240 and repeats a series of operations of storing and managing the image information stored in the image information storage unit of the database unit 500 for each of the surveillance camera modules 200, At the same time, the video of the surveillance camera module 200, which captures the occurrence of the event, is displayed on the entire screen by a flicker function on at least one screen of the monitor 400, We provide crime prevention service so as not to miss.

When the direction and distance from the sensor management unit 210 to the event occurrence point S are detected after the sound detection signal is transmitted from the sensor management unit 210, the security monitoring control unit 300 adjusts the zoom magnification according to the distance, 200) After rotating and moving (first surveillance shot), the relevant part is enlarged to be precisely shot (second surveillance shot), and the surrounding situation is photographed (first surveillance shot) And stores the image information in the image information storage unit of the database unit 500.

Next, when the security monitoring control unit 300 receives the event occurrence signal from the sensor management unit 210, the security monitoring control unit 300 generates an alarm in the central control room monitored by the control personnel (S800).

Specifically, the security monitoring control unit 300 may generate an alarm for the control personnel in accordance with the motion of the object or sound detection. Thereby, even if the control personnel does not manually operate the camera rotation movement, the movement of the object or the sound of the object is detected by the sensors 100-1 to 100-n and 200-1 to 200-4 provided in various places The surveillance camera module 200 is automatically rotated to perform a series of image tracking photographing, thereby enabling efficient security surveillance that can take immediate action when an event occurs.

The sensor management unit 210, the operation processing unit 220, the camera driving unit 230 and the communication control unit 240 and the security monitoring control unit 300, the monitor 400, and the database 400, which constitute the surveillance camera module 200 of the present embodiment, The above-described processes can be performed through other computer apparatuses in which the security monitoring related program is loaded and the related information can be generated, stored, and processed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be clear to those who have knowledge.

100-1 to 100-n: Field sensors
200-1 to 200-4: internal sensors
200: surveillance camera module 210: sensor management unit
220: operation processing unit 230: camera driving unit
240: communication control unit 300: security monitoring control unit
400: Monitor 500: Database part

Claims (12)

A surveillance camera module having a function of varying a photographing direction and enlarging and reducing a subject; A plurality of built-in sensors located adjacent to the surveillance camera module and outputting built-in detection signals; And a plurality of field sensors located at a monitoring site remote from the monitoring camera module and outputting a field sensing signal,
Wherein the surveillance camera module performs a first surveillance photographing to determine an event area where an event is generated from the built-in detection signal and the site detection signal and change the photographing direction to the event area, Calculating a shooting distance by analyzing the detection signal, and performing a second monitoring shot to enlarge or reduce the event area based on the calculated shooting distance,
The built-in sensors and the field sensors sense a sound of an object and output a sound detection signal,
The surveillance camera module includes: a sensor management unit for managing the built-in detection signal received from the built-in sensors and the field detection signal received from the field sensors; An arithmetic processing unit for calculating the imaging direction and the imaging distance by calculating the built-in detection signal and the field detection signal; A camera driver for driving the camera module; And a communication controller for externally transmitting and receiving the built-in detection signal, the field detection signal, and photographed image information,
Wherein the arithmetic processing unit determines that the volume of at least one sound detection signal among the plurality of sound detection signals corresponding to the field sensors is equal to or greater than a reference value, Determines the photographing direction based on a difference in magnitude of a volume (decibel)
Wherein the calculation processing unit calculates the imaging distance from a plurality of sound detection signals corresponding to the on-site sensors and the built-in sensors by a time difference of arrival (TDOA) method. . delete The method according to claim 1,
Wherein the built-in sensors are disposed at four positions at intervals of 90 degrees on all sides of the surveillance camera module. The method according to claim 1,
Wherein the shooting distance is a distance from the monitoring camera module to the event area. delete delete delete delete The apparatus of claim 1,
The second surveillance photograph is performed by applying a preset zoom magnification and focus corresponding to the photographing distance to precisely photograph the event area to acquire image evidence data, And the monitoring camera module is driven. The method according to claim 1,
Further comprising a security monitoring controller for performing various system operation information and application programs for sensor management, remote camera driving, alarm generation, security monitoring operation, and processing image information received from the monitoring camera module. system. The method according to claim 1,
And a monitor for displaying the image information photographed by the plurality of surveillance camera modules on the surveillance screen in a split manner and displaying the video of the surveillance camera module on the full screen accompanied by a flicker function when an event occurs A surveillance camera system. The method according to claim 1,
Further comprising: a database unit for storing the built-in detection signal, the field detection signal, and the image information captured by the monitoring camera module.

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