JP2012014543A - Remote monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately display images of a part causing abnormality when abnormality occurs in a monitoring object and to uniformize the display frequency of multiple camera images.SOLUTION: In a patrol display performed by switching a plurality of camera images for every predetermined period of time, when abnormality occurs in a monitoring object of a camera 1-1, the image of a camera 1-2 being displayed currently is displayed for a certain period of time. Then, the image is switched to and displays the abnormality occurrence image of the camera 1-1 of the part causing the abnormality. In the second round after returning to the original patrol display again, the display of the camera 1-1 in which abnormal occurrence image is displayed is skipped to uniformize the display frequency and improve the monitoring efficiency of the whole monitoring region.

Description

  The present invention relates to a remote monitoring system, and more particularly to a system suitable for large-scale remote monitoring using a plurality of cameras.

  FIG. 7 shows a configuration example of a large-scale remote monitoring system that monitors videos taken by a plurality of cameras at one site. In the figure, 1-1 to 1-M are cameras that shoot a monitoring target, 2-1 to 2-N are recording devices that record images taken by cameras 1-1 to 1-M, and 3 is a camera 1-1 to A control device that selects a camera that acquires and displays video captured by 1-M and video recorded in the recording devices 2-1 to 2-N, and 4 is a display that displays the video selected by the control device 3. A device 5 is a transfer means for connecting the cameras 1-1 to 1-M, the recording devices 2-1 to 2-N, and the control device 3.

  When monitoring images taken by a plurality of cameras 1-1 to 1-M with a single display device 4, the control device 3 sets the images taken by the cameras 1-1 to 1-M for a predetermined time. A method of automatically switching each time and cyclically displaying on the display device 4 is often used.

  However, in the case of a large-scale remote monitoring system with hundreds of cameras 1-1 to 1-M, the image of camera 1-1 is displayed once and then the image of camera 1-1 is displayed again. Since the time until this time becomes very long, there is a problem that even if an abnormality occurs in the monitoring target of the camera 1-1 during that time, it may be overlooked.

  Therefore, Patent Document 1 proposes a method shown in FIG. The captured images of the cameras 1-1 to 1-M are automatically switched every predetermined time, and if an abnormality occurs in the monitoring target of the camera 1-1 during the cyclic display, the control device 3 generates an abnormality in the camera 1-1. The recorded video at the time is acquired from the camera 1-1 or the recording device 2-1 recording the video taken by the camera 1-1 and displayed on the display device 4 for a predetermined time, and then again the cameras 1-1 to 1-M Cycles through the captured video. As a result, even when an abnormality occurs during the cyclic display of the images from a plurality of cameras, the recorded video at the time of the abnormality can be displayed.

Japanese Patent Laid-Open No. 11-191190

  In the conventional remote monitoring system, as shown in FIG. 8, when an abnormality occurs in the monitoring target of the camera 1-1 during the cyclic display of the captured images of the cameras 1-1 to 1-M, 1 is generated due to the occurrence of the abnormality. Since the shot image of the camera 1-1 displayed twice in the round is also displayed in the second round, the number of video display times of the camera 1-1 is larger than that of the cameras 1-2 to 1-M.

  FIG. 9 shows an example in which four images are divided and displayed at the same time. While the shot images of the cameras 1-1 to 1-M are cyclically displayed on this divided screen, the monitoring target of the camera 1-1 and the camera 1- When an abnormality occurs in the monitoring target of 2, the recorded video when the abnormality of camera 1-1 occurs is displayed on the single screen for a predetermined time, and then the recorded video when the abnormality of camera 1-2 occurs is displayed on the single screen for a predetermined time. It is considered to be. In this case, it takes time to display the recorded video at the time of the camera 1-2 error after the camera 1-2 error, and it takes time to return to the original patrol display again. End up.

  As described above, when an abnormality occurs in a shooting target of a camera among the images captured by a plurality of cameras during cyclic display, there is a problem in that the display frequency varies depending on whether the abnormality occurs or not.

  In addition, when images shot by multiple cameras are displayed cyclically on a split screen, if abnormalities occur one after another in the shooting targets of multiple cameras, the recorded video at the time of the abnormality will be displayed after the error occurred. In addition, there is a problem that it takes time to return to the original cyclic display after the recorded video at the time of abnormality is displayed.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a location where an abnormality occurs immediately when an abnormality occurs in a monitoring target in a remote monitoring system that cyclically displays captured images of a plurality of cameras. Another object of the present invention is to provide a remote monitoring system that can display the same image and can also equalize the display frequency of the images of many cameras.

  In order to achieve the above object, the present invention is characterized in that a plurality of cameras for capturing a monitoring target, at least one recording device for recording images captured by the plurality of cameras, and images captured by the cameras in advance. In a remote monitoring system including a control device that performs cyclic display by switching at a set predetermined time, the camera or the recording device includes an abnormality detection unit that detects an abnormality that has occurred in a photographing target, and the abnormality detection unit. An abnormality notifying unit for notifying the detected abnormality to the outside, and the control device displays a video that is being cyclically displayed according to the abnormality notification by switching to a video at the time of occurrence of an abnormality in the camera or the recording device, In the next patrol display, in response to the abnormality notification, the video captured by the camera that has been displayed twice or more during the previous patrol display is skipped and displayed.

  According to the present invention, when an abnormality occurs in the monitoring target of the camera during the cyclic display of the captured images of the plurality of cameras, the recorded video at the time of the abnormality is displayed in the middle of the cyclic display, and during one round of the tour. Since the video captured by the camera that has been displayed more than once is skipped and not displayed in the next cyclic display, the display frequency of the entire camera can be made uniform, and the entire monitoring area can be remotely monitored efficiently. .

It is a time chart of the remote monitoring system which concerns on one Example of this invention. It is another time chart of the remote monitoring system which concerns on one Example of this invention. It is another time chart of the remote monitoring system which concerns on one Example of this invention. It is another time chart of the remote monitoring system which concerns on one Example of this invention. It is a block diagram of the remote monitoring system which concerns on one Example of this invention. It is a block diagram of the remote monitoring system which concerns on the other Example of this invention. It is a block diagram of the conventional large-scale remote monitoring system. It is a time chart of the conventional remote monitoring system. It is a time chart of the remote monitoring system currently considered.

  Hereinafter, embodiments of the present invention will be described with reference to the illustrated examples. In these embodiments, in addition to the above-described features of the present invention, a device when an abnormality occurs in the monitoring target of a plurality of cameras, and the captured images of two or more cameras among the plurality of cameras are divided and displayed on a divided screen. In addition, there are also contrivances when the abnormality occurs in the monitoring target of the camera more than the number of screen divisions of the divided screen, but the present invention is limited to these examples is not.

  FIG. 5 shows a configuration diagram of a remote monitoring system according to an embodiment of the present invention. In the figure, the same or corresponding parts as those in FIG. 7 are denoted by the same reference numerals and description thereof is omitted, and the suspicious person 6 is photographed with the cameras 1-1 to 1-2.

  The camera 1-1 to 1-M or the recording device 2-1 to 2-N is an abnormality detection unit that detects an abnormality that has occurred in the object to be imaged based on a change in the image captured by the camera 1-1 to 1-M. And an abnormality notification unit that notifies the detected abnormality type and occurrence time to the outside.

  When no abnormality is notified from the cameras 1-1 to 1-M or the recording devices 2-1 to 2-N, the control device 3 sets in advance the images shot by the cameras 1-1 to 1-M. The display is cyclically switched at the predetermined time automatically.

  FIG. 1 shows a time chart of a remote monitoring system according to an embodiment of the present invention. As shown in the figure, when a suspicious person 6 invades the subject to be photographed with the camera 1-1 while displaying the image of the camera 1-2, the record that records the photographed image of the camera 1-1 or the camera 1-1 first The device 2-1 detects an abnormality from the change in the video being shot, and notifies the control device 3 of the type and time of occurrence of the abnormality.

  When the abnormality is notified from the camera 1-1 or the recording device 2-1, the control device 3 analyzes the occurrence time of the abnormality, and the camera 3 or the recording device 2-1 analyzes a predetermined time from the time of the abnormality occurrence. Get recorded video. Then, the recorded video at the time of occurrence of the abnormality acquired by the camera 1-1 is displayed on the display device 4 for a predetermined time, and the original cyclic display is performed again. The shot image of the camera 1-1 that displayed the image twice in the first round is skipped in the next second round, and the round is started from the camera 1-2 in the second round.

  In addition, as shown in FIG. 2, when a suspicious person 6 enters the shooting target of the plurality of cameras 1-1 and 1-2 while displaying the image of the camera 1-2, the camera 1 in which an abnormality has occurred first is displayed. -1 is displayed on the display device 4 for a predetermined time, and then the remaining recorded video is displayed on the display device 4 for a predetermined time. When the recorded video at the time of occurrence of the abnormality of all the cameras in which the abnormality has occurred is displayed, the original cyclic display is performed again. The shot images of the camera 1-1 and the camera 1-2 displaying the image twice in the first round are skipped in the second round, and the round is performed from the camera 1-3 in the second round.

  As described above, according to the remote monitoring system of the present embodiment, even when a suspicious person enters the shooting target of the camera during the cyclic display of the images shot by the cameras 1-1 to 1-M, The recording video at the time of intrusion of a suspicious person can be displayed in a short time after the suspicious person invades while the display frequency is uniform.

  In the above embodiment, an example of cyclic display on a single screen has been described. Next, the case of cyclic display on a split screen that displays a plurality of screens simultaneously on one screen will be described with reference to FIG.

  When no abnormality is notified from the cameras 1-1 to 1-M or the recording devices 2-1 to 2-N, the control device 3 displays the images taken by the cameras 1-1 to 1-M. 4 is displayed in a 4-split screen while cyclically displaying while switching automatically at a preset time.

  When a suspicious person 6 enters the shooting target in the order of cameras 1-1 and 1-2 while displaying images from cameras 1-5, 1-6, 1-7, 1-8 as shown in Fig. 3, First, the camera 1-1 or the recording device 2-1 that records the video captured by the camera 1-1 detects an abnormality from the change in the video that is being captured, and notifies the control device 3 of the type and time of occurrence of the abnormality. Notice. When the abnormality is notified from the camera 1-1 or the recording device 2-1, the control device 3 analyzes the occurrence time of the abnormality, and the camera 3 or the recording device 2-1 analyzes a predetermined time from the time of the abnormality occurrence. Get recorded video. Similarly, when an abnormality is notified from the camera 1-2 or the recording device 2-2 that records the video captured by the camera 1-2, the control device 3 detects an abnormality from the camera 1-2 or the recording device 2-2. Recorded video for a predetermined time from the time of occurrence is acquired.

  Then, the recorded video at the time of occurrence of the abnormality acquired by the cameras 1-1 and 1-2 and the video of the cameras 1-9 and 1-10 scheduled to be displayed next are simultaneously displayed on the display device 4 in a quadrant screen for a predetermined time. . When the recorded video at the time of occurrence of the abnormality of all the cameras in which the abnormality has occurred is displayed, the original cyclic display is performed again. The shot images of the camera 1-1 and the camera 1-2 that displayed the image twice in the first round are not displayed in the second round, and the round is performed from the camera 1-3 in the second round.

  In addition, as shown in Fig. 4, while displaying images from cameras 1-5, 1-6, 1-7, 1-8, the camera 1-1 to camera 1-6 can capture more images than the number of screen divisions. When a suspicious person 6 invades, the recorded video of the abnormal camera 1-1, 1-3, 1-4, 1-6, which has an abnormality first, is displayed on the display device 4 in a 4-split screen for a predetermined time. The recorded video at the time of abnormality of the remaining cameras 1-2 and 1-5 and the video of the cameras 1-9 and 1-10 to be displayed next are simultaneously displayed on the display device 4 in a four-divided screen for a predetermined time. When the recorded video at the time of occurrence of the abnormality of all the cameras in which the abnormality has occurred is displayed, the original cyclic display is performed again. In other words, in response to anomaly notifications from the camera or recording device that are larger than the number of screen divisions of the divided screen within a predetermined time, the images at the time of the abnormality from the camera or the recording device are sequentially displayed on the divided screen in the order in which the abnormality occurred. . The captured images of cameras 1-1 to 1-6 that displayed the video twice in the first round are not displayed in the second round, and the rounds are started from camera 1-7 in the second round.

  As described above, according to the present embodiment, even when a suspicious person enters the shooting target of the camera while the images captured by the cameras 1-1 to 1-M are cyclically displayed on the four-divided screen, By simultaneously displaying the video of the suspicious person's intrusion and the video of the camera scheduled for patrol display on a 4-split screen, the image of the suspicious person's intrusion can be displayed in a short time after the suspicious person invades. It is possible to shorten the time for returning to the original patrol display after displaying the video when the person enters.

  In addition, by not displaying the video of the camera that has been displayed twice or more in one round in the next round, it is possible to equalize the number of video display times of all cameras and improve the monitoring efficiency of the entire surveillance area.

  In the present embodiment, the number of screen divisions is four, but the present invention is not limited to this.

  FIG. 6 is a configuration diagram of a large-scale remote monitoring system according to another embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same or an equivalent part, and description is abbreviate | omitted. 7-1 to 7-M are alarm sensors or alarm switches connected to cameras 1-1 to 1-M, 8-1 to 8-N are alarms connected to recording devices 2-1 to 2-N Sensor or alarm switch.

  In the first embodiment, the occurrence of an abnormality is detected by processing a change in the captured image, and an abnormality is detected in the control device 3 from the cameras 1-1 to 1-M or the recording devices 2-1 to 2-N. In this embodiment, the abnormality detection unit of the camera 1-1 to 1-M or the recording device 2-1 to 2-N is used as an alarm sensor or alarm switch 7-1 to 7-M, 8-1 to An abnormality that has occurred in the object to be imaged is detected by a signal input from 8-N, and the abnormality is notified to the control device 3.

  Here, as an alarm sensor, it is conceivable to detect the intrusion of a suspicious person by a known infrared sensor or the like that detects a human body. As an example of the alarm switch, it is conceivable to use a door open / close switch or an emergency button switch provided around the monitoring target of the cameras 1-1 to 1-M or the recording devices 2-1 to 2-N.

  For example, a suspicious person can be predicted to enter if the door opening / closing switch is activated even though the monitored area is already closed, and if an emergency button switch is pressed, some abnormality will occur. Therefore, the abnormality is notified and the corresponding video is displayed.

  According to the present embodiment, it is possible to perform remote monitoring with high accuracy and efficiency using information of existing alarm sensors and alarm switches even for abnormalities that cannot be determined from only the video being captured.

1-1 to 1-M ... Camera
2-1 to 2-N ... Recording device
3: Control device
4 ... Display device
5 ... Signal transfer means
6 ... Suspicious person
7-1 to 7-M, 8-1 to 8-N ... Alarm sensor or alarm switch

Claims (7)

  A plurality of cameras that shoot the monitoring target, at least one recording device that records videos shot by the plurality of cameras, a display device that displays the videos, and a predetermined time for which the videos shot by the cameras are set in advance In the remote monitoring system provided with a control device that cyclically displays on the display device by switching each time, the camera or the recording device detects an abnormality that has occurred in the photographing target, and the abnormality detection unit detects An abnormality notification unit for notifying the outside of the abnormality that has occurred, and in response to the abnormality notification from the camera or the recording device, the camera or the recording device generates an abnormality in the video during the cyclic display. In the next patrol display, the video shot by the camera that was displayed more than once during the previous patrol display is skipped in the next patrol display. Remote monitoring system, characterized in that the cyclic display.   2. The remote monitoring system according to claim 1, wherein the control device acquires a plurality of images at the time of occurrence of the abnormality from the camera or the recording device in response to an abnormality notification from the two or more cameras or the recording device. A remote monitoring system, wherein the display is switched to the display device in the order in which the abnormality occurred.   2. The remote monitoring system according to claim 1, wherein the control device cyclically displays a video image from a preset number of the cameras while simultaneously displaying them on a split screen on the display device, and at least one of the cameras or the recording device. Remote monitoring characterized in that, in response to an abnormality notification from a device, the video at the time of occurrence of the abnormality is acquired from the camera or the recording device, and the video at the time of occurrence of the abnormality is simultaneously displayed on the screen during the cyclic display. system.   4. The remote monitoring system according to claim 3, wherein the control device includes the cameras in the order in which the abnormalities occur in response to abnormality notifications from the camera or the recording device that are more than the number of divisions of the divided screen within a predetermined time. Alternatively, the remote monitoring system is characterized in that an image when an abnormality occurs from the recording device is sequentially displayed on the divided screen.   5. The remote monitoring system according to claim 1, wherein in response to an abnormality notification from the camera or the recording device, a video currently being displayed is displayed for the predetermined time, and then switched to the video at the time of the abnormality. Remote monitoring system characterized by display.   6. The remote monitoring system according to claim 1, wherein the abnormality detection unit detects an abnormality that has occurred in an object to be imaged by processing a captured image.   7. The remote monitoring system according to claim 1, wherein the abnormality detection unit detects an abnormality that has occurred in a subject to be photographed by an alarm sensor or an alarm switch connected to the camera or the recording device. Remote monitoring system.

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