JP2014039184A - Safety monitoring system by a plurality of monitor cameras - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety monitoring system by a plurality of monitor cameras, which makes monitoring in a wide range only by a camera video be efficient, achieves disaster prevention and crime suppression, and can generate statistical information on a flow of people and vehicles as an application of a function.SOLUTION: A safety monitoring system includes: a plurality of sensors arranged to surround a contour of an area of a monitoring object; and a plurality of PTZ cameras for monitoring the area of the monitoring object. When one specified sensor among the plurality of sensors detects a moving object, the main monitoring camera for monitoring the object is previously determined from the plurality of PTZ cameras and zooms up the monitoring object to monitor the object with the previously determined PTZ camera as the main monitoring camera when the plurality of sensors detect the moving object.

Description

  The present invention relates to a safety monitoring system using a plurality of surveillance cameras, and in particular, a plurality of surveillance in a parking lot, a harbor, a park, a school, a kindergarten, a nursery school, a station premises, an airport, a shopping center, a prison, and other facilities having a wide site. The present invention relates to a camera safety monitoring system.

  Thereby, monitoring of suspicious persons, behavior monitoring of elderly people, equipment monitoring of industrial facilities and electric power facilities, and safety monitoring systems for storage facilities of dangerous materials such as oil, gas, chemicals, etc. can be constructed.

  The monitoring camera is a video camera for monitoring the surrounding environment for various purposes, and is used in a monitoring system that displays, records, detects a motion, and transmits an image acquired by monitoring. Its uses include crime prevention, disaster prevention, measurement, and recording.

  There are several types of surveillance cameras. In the present invention, a safety surveillance system using a PTZ camera (Pan-tilt-zoom camera) capable of monitoring a wide range of images is constructed.

  In the case of a surveillance camera for crime prevention, there are a case where an attempt is made to achieve a crime deterrent effect by notifying that monitoring is being performed, and a case where the purpose is to preserve evidence when a crime occurs. In the former case, the surveillance camera is installed in a conspicuous place, and in the latter case, it is installed in an inconspicuous place. Such a surveillance camera is also a target of destruction from a malicious person. For this reason, one surveillance camera is configured to monitor other surveillance cameras.

In such a monitoring system, the monitoring video is recorded and stored on a recording medium, but the capacity of the storage device is selected in consideration of the necessary storage period, and when the storage capacity is exceeded, the old recording is deleted. Is common.
Also, in consideration of the recording capacity, it is determined whether to place importance on the shooting time or on the image quality. It is also known that recording is not started at all, but recording is started a little before the surveillance camera detects an object that moves within the shooting range.

  Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-11212) discloses a network as an object to provide a monitoring device capable of efficiently monitoring a wide range and simultaneously accurately monitoring a plurality of monitoring targets. A plurality of revolving cameras that can be controlled via a drive, a position detection sensor that detects the position of the monitoring target, a sensor information processing unit that identifies the position of the monitoring target based on detection information from the position detection sensor, and a turn A video display unit that displays video data from the camera is selected. Among the turning cameras, a turning camera corresponding to the position specified by the sensor information processing means is selected, and the selected turning camera is driven and controlled via the network. A monitoring system including a monitoring terminal that displays a monitoring target on a video display unit is disclosed.

JP 2008-11212 A

However, as in the past, it has been found that there is a new problem that it is difficult to perform sufficient follow-up monitoring by monitoring only with camera images.
Therefore, the present invention makes it possible to improve the efficiency of wide-area monitoring using only camera images, prevent disasters and prevent crimes, and create statistical information on the flow of people and cars as an application of this function. A safety monitoring system using a plurality of monitoring cameras is also provided.

  A safety monitoring system using a plurality of surveillance cameras according to the present invention includes a plurality of sensors arranged so as to surround an outline of a monitored area and a plurality of PTZ cameras for monitoring the monitored area. In the monitoring system, when a specific one of the plurality of sensors detects a moving object, a main monitoring camera for monitoring the object is selected from the plurality of PTZ cameras. Predetermined, and when a moving object is detected by the plurality of sensors, a predetermined PTZ camera is used as a main monitoring camera to perform zoom-up on the monitoring object and monitor the object. To do.

  Furthermore, the safety monitoring system using a plurality of surveillance cameras according to the present invention includes a plurality of sensors arranged so as to surround the outline of the monitoring target area, and a plurality of PTZ cameras for monitoring the monitoring target area. In the safety monitoring system, when a moving object is detected by the plurality of sensors, a predetermined PTZ camera is used as a main monitoring camera to perform zoom-up toward the monitoring object and the monitoring object A one-shot image including the image is recorded and recorded.

  According to the present invention, it is possible to improve the efficiency of wide-area monitoring, which has conventionally been insufficiently tracked only by monitoring with camera images, and to prevent disasters and prevent crimes. It is also possible to create statistical information on the flow of cars, etc.

1 is a conceptual diagram of a system configuration to which a safety surveillance system using a plurality of surveillance cameras according to the present invention is applied. It is a figure which shows the monitoring charge camera information table predetermined corresponding to the sensor. It is a conceptual diagram at the time of extracting the one-shot image as an Example of this invention. It is a figure which shows the example of the one-shot image as an Example of this invention. It is a block diagram which shows the structural example of a video storage device. It is a slow chart explaining the function of the safety surveillance system by the some surveillance camera of this invention.

  The safety monitoring system using a plurality of surveillance cameras of the present invention detects a person moving on the screen based on correlation information of camera images from a plurality of sensors (S01 to S11) and a plurality of surveillance cameras (PTZ01 to PTZ03), (1) Orientation of a preselected and selected surveillance camera, (2) Zoom magnification of the selected surveillance camera, (3) Recording start to end of the selected surveillance camera video, (4) Notification to the surveillance terminal, (5) Recording of detection history, (6) A wide range of monitoring that was insufficiently tracked by camera video alone by automatically controlling the sounding of warning sounds (including voice) and the activation of warning lights. To prevent disasters and deter crime. As an application of this function, it is also possible to create statistical information about the flow of people and cars.

The following may be considered as sources of correlation information.
Contact or digital information system: Contact input information from equipment such as various sensors (infrared, human feeling, vibration, breaking sound, door opening / closing) and air conditioners Analog information system: temperature / humidity, power, pressure, water level, light intensity (luminance) ), Etc. Camera image: Characteristics of person's movement size, direction, speed, and person's color, shape, number, etc. Date / Time information: Time zone, year, month, and season Information By detecting the belt, the door opening / closing signal, and the movement of the camera, it is possible to make a comprehensive unauthorized intruder judgment on the information.

  In order to reduce false detections by conventional automatic tracking cameras, the following mechanism is used for monitoring.

(1) Since a plurality of images captured by the surveillance camera (such as a plurality of passers-by) often occur, one-shot images (still images) are displayed one after another.
(2) By selecting a one-shot image that the supervisor should pay attention to, a live video is displayed after performing PTZ at the position of the image. In this state, even if a new subject is generated, PTZ is not automatically performed.
(3) Here, the latest recorded video can be reproduced with one touch.
(4) The detection location is plotted on a camera map (a diagram showing the camera layout on a plan view or the like), and the plotted history is also recorded.

  Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. Of course, the present invention is not limited to the following detailed description of the embodiments, and design changes that can be easily carried out by those skilled in the art belong to the inventive concept of the present invention.

  FIG. 1 is a conceptual diagram of a system to which a safety monitoring system using a plurality of monitoring cameras according to the present invention is applied, and is an application example of a safety monitoring system taking a hospital as an example.

  The safety monitoring system includes a plurality of cameras PTZ01-PTZ03 for photographing a person in a hospital premises, a plurality of sensors for detecting when a person enters the premises from outside the hospital premises or entering / exiting a hospital building. S01-S11. The plurality of cameras PTZ01 to PTZ03 are arranged at a position suitable for photographing a person in the hospital premises, for example, at a high position in the hospital building. The plurality of sensors S01-S11 are installed, for example, at positions suitable for detecting entry into and exit from hospital premises and buildings. The number of surveillance cameras PTZ and sensors S increases and decreases as necessary.

  FIG. 2 is a diagram illustrating assignment of primary cameras and secondary cameras to a plurality of monitoring cameras PTZ01-PTZ03 and a plurality of sensors S01-S11 installed at predetermined positions in a hospital.

  For example, the sensors S01-S02 operate in association with the monitoring camera PTZ01, and the monitoring camera RTZ01 is mainly responsible.

  The sensors S02 to S03 operate in association with the monitoring cameras PTZ01, PTZ02, and PTZ03, and the monitoring camera RTZ01 is mainly responsible and the monitoring cameras RTZ02 and 03 are responsible.

  The sensors S03 to S04 operate in association with the monitoring cameras PTZ01, PTZ02, and PTZ03, and the monitoring camera RTZ02 is mainly responsible and the monitoring cameras RTZ01 and 03 are responsible.

  The sensors S04 to S05 operate in association with the monitoring cameras PTZ01, PTZ02, and PTZ03, and the monitoring camera RTZ01 is mainly responsible, and the monitoring cameras RTZ02 and 03 are responsible.

  The sensors S05 to S06 operate in association with the monitoring cameras PTZ01, PTZ02, and PTZ03, and the monitoring camera RTZ02 is mainly responsible and the monitoring cameras RTZ01 and 03 are subsidiary.

  The sensors S06 to S07 operate in association with the monitoring cameras PTZ01, PTZ02, and PTZ03, and the monitoring camera RTZ03 is mainly responsible and the monitoring cameras RTZ01 and 02 are subsidiary.

  The sensors S07 to S08 operate in association with the monitoring camera PTZ03, and the monitoring camera RTZ03 is mainly responsible for the operation. The sensors S09 to S10 operate in association with the monitoring cameras PTZ01 and PTZ02, and the monitoring camera RTZ02 is mainly responsible and the monitoring camera RTTZ01 is responsible as the secondary responsible.

  The sensors S10 to S11 operate in association with the monitoring camera PTZ03, and the monitoring camera RTZ03 is mainly responsible.

  FIG. 3 is a diagram illustrating a relationship among the plurality of sensors S01-S11, the plurality of cameras PTZ01-03, the video storage device, and the monitoring PC 551.

  The PTZ cameras (main) and (sub), which are monitoring cameras, the video storage device 500, and the monitoring PC 551 are connected by a LAN 561.

  The video storage device 500 issues a PTZ instruction to the PTZ camera 1-3, and acquires and stores video information captured based on the instruction. The video storage device 500 also stores sensor information of the plurality of sensors S01-S11. The video information of the video storage device 500 is output to the monitoring PC 551 and displayed on the display of the monitoring PC. A specific example of the video storage device 500 will be described later.

  FIG. 4 shows an example of a one-shot image by the PTZ camera 1-3. The following one-shot image is displayed on the monitoring PC. That is, in these images 401-405, information indicating the shooting date, the PTZ camera 1-3, the camera No. identifying the sensors S01-S11, the sensor No., the distance, the height, the direction, and the like as internal information. included. For example, the image 401 includes information on “February 20, 2012 16:05:30”, “Camera No. 3”, “Sensor No. 3”, “Distance: 8 m”, and “Direction: 30 ° to the right”. Is included.

  Then, by clicking one of the one-shot images, (1) the current live video is displayed, (2) the following internal information is displayed, (3) the recorded video is automatically played back to the specified time, (4) Plot the location where the object was detected on the camera map. Thereby, the plot figure of the detection of an object can be used for the flow history of a person or a car. Note that the position of the object can be determined from the horizontal and vertical angles of the camera and the zoom magnification.

  FIG. 5 is a configuration diagram illustrating an example of the video storage device 500. The video storage device 500 includes a contact input monitoring unit 511, a sensor position information recording unit 512, a video input unit 521, a video analysis unit 522, a video recording unit 523, a video distribution unit 524, a PTZ control unit 531, a main / sub camera selection unit 532, A sensor position information and PTZ instruction information conversion unit 533, a clock timer unit 541, a system configuration information unit 542, and a system setting information unit 543 are included.

  The contact input monitoring unit 511 is connected to the plurality of sensors S01 to S11, receives contact signals from various sensors, and monitors the contact inputs.

  The sensor position information recording unit 512 refers to the timer information of the clock timer unit 541 and the system configuration information 5421 of the system configuration information unit 542, and detects the sensor position from the contact input monitoring unit 511 detected based on the system setting information. Record with location information.

The video input unit 521 receives video information sent from a plurality of PTZ cameras PTZ1-PTZn.
The video analysis unit 522 analyzes the video information of the video input unit 521 and determines whether there is a moving object in the camera video, whether there is no shielding object, or whether the PTZ operation of the camera is completed.

  The video recording unit 523 records the information analyzed by the video analysis unit 522 with reference to the timer information of the clock timer unit 541 and the system setting information 5431 of the system setting information unit 543. That is, recording is performed for a specified number of seconds according to the system setting information 5431.

  The video distribution unit 524 refers to the information of the system configuration information unit 5241 and transmits the video of the video recording unit 523 to the monitoring PC 551. That is, the current real-time video, one-shot image, recorded video, etc. are transmitted to the monitoring PC according to the system configuration information.

  The sensor position information and PTZ instruction information conversion unit 533 refers to each information of the sensor position information recording unit 512, the system configuration information unit 542, and the system setting information unit 543, converts the sensor position information and the PTZ instruction information, Horizontal and vertical angles and zoom magnification information for the camera selected by the main / sub camera selection unit 532 are calculated from the sensor position information.

  The main / sub camera selection unit 532 receives information from the sensor position information recording unit 512 and the system configuration information unit 542 and selects a main / sub camera.

  The PTZ control unit 531 receives the output of the sensor position information and PTZ instruction information conversion unit 533, and controls a plurality of PTZ cameras PTZ01-PTZn. That is, the horizontal and vertical angles and zoom magnification information are transmitted to the main and sub cameras to instruct the PTZ operation.

  The clock timer unit 541 holds real-time date and time information. When recording or recording sensor detection information, the clock timer unit 541 refers to the date and time information at that time.

  The system information 5421 of the system configuration information unit 542 includes (1) sensor type, number, number of each, information of setting location, (2) type of camera, number, number of each, setting location, (3) This includes information on the shootable range for each camera number, (4) the type of monitoring PC that displays video, and IP address information.

  The system setting information 5431 of the system setting information unit 543 includes (1) minimum interval (seconds) for continuous detection, (2) recording seconds at the time of shooting, (3) detection time zone for each date and day of the week. (4) Types of report commands and report destinations for each sensor number and camera number, and (5) camera map information.

  That is, when a person is detected in the sensors S01 to S11, the position is detected in the main / sub camera selection unit 532 via the contact input monitoring unit 511, the sensor position information recording unit 512, and the sensor position information and PTZ instruction information conversion unit 533. A camera is selected from among the cameras PTZ01 to PTZ03 to be photographed in the vicinity of the sensor from the information and the imageable range for each of the cameras PTZ01 to PTZ03.

  At this time, a spare camera is also selected in case the sensor detection position becomes the blind spot of the selected camera or the camera malfunctions depending on the shape of the building or the presence or absence of an obstacle. The former is the main camera and the latter is the secondary camera.

  Next, based on the selection result by the main / sub camera selection unit, the PTZ control unit 531 rotates the camera selected from the detected sensor position information and the position information of each camera many times in the horizontal and vertical directions. It is calculated whether the double zoom should be performed, and the numerical value (PTZ control signal) is transmitted to the camera.

  Cameras PTZ01-PTZn rotate and zoom in accordance with the transmitted numerical values to capture images. The captured video is recorded in the video recording unit 523 via the video input unit 521 and the video analysis unit 522. This recording is performed for a predetermined number of seconds in the system setting information 5431.

  FIG. 6 is a flowchart showing a processing flow from sensor detection to notification to the recording / monitoring PC.

  First, in step S611, it is determined whether the sensors S01 to S11 have detected a person.

When the sensor detects a person (Yes), in step S611, the position information is acquired from the detection sensor, and recorded in the sensor position information recording unit 512 together with the time information.
For detection by the sensors S01 to S11, a time zone in which the detection is valid is set for each date or day of the week.

  In step S612, it is determined whether or not it is a detection target time zone, and if it is a valid time zone in the detection target time zone (Yes), the system setting information 5431 has been determined in advance from the previous detection in step S613. It is checked whether the number of seconds has elapsed, and if it has elapsed (Yes), sensor number information is acquired in step S614.

  Here, the sensor number is acquired only when the predetermined number of seconds have elapsed since the previous detection, because a certain amount of time is required for subsequent camera turning, recording, notification, etc. This is because even if the sensor is continuously detected, it is not possible to shift to the next processing within the processing time.

  Next, after acquiring the sensor number information, in step S615, the sensor position is specified from the sensor number, and in step S616, the main camera and the sub camera that can be photographed are selected and determined for the position. To do.

  Next, in step S617, in order to direct the camera to the detection position, numerical values (horizontal turning angle, vertical turning angle) of how many times the main camera and the sub camera are turned horizontally and vertically and how many times the zoom is performed. , Zoom magnification).

  In step S618, when the main camera or the sub camera can shoot (Yes), in step S619, the horizontal and vertical angles and the zoom magnification are instructed to the camera, and in step S620, the detection position is set to the camera. Plot on the map.

  After the camera has turned and zoomed to the designated position, if there is a moving object such as a person in step S621 (Yes), recording is performed for the time designated in the system setting information 5431 in step S622, and step S623 is performed. The camera and sensor number, shooting date and time, and position information are recorded in the video recording unit 523 together with the video.

  At the same time, in step S626, a one-shot image is generated from the recorded video, and the sensor number, shooting date / time, and position information are displayed on the monitoring PC.

  At this time, if a notification command (option; for example, sending a mail to a specified mail address, turning on a warning light and sounding a buzzer) is specified in the system setting information 5431 in step S627, the notification Execute a command.

  On the other hand, in step S618, when the main camera cannot be photographed because the sensor position is blocked by the shape of the building, trees, or the like, or the camera fails (No), it is determined whether or not the sub camera can shoot.

  If it is determined in step S624 that photographing is possible (Yes), in step S625, a turning and zoom instruction to the sub camera is performed in the same manner as in step S619.

  If there is no moving object such as a person in step S621 (No), only the sensor number, detection date / time, and position information are recorded in the video recording unit 523 in step S628, and no video recording is performed.

  In step S624, even when the sub camera cannot shoot (No), in step S628, only the sensor number, detection date and time, and position information are recorded in the video recording unit 523, and no video recording is performed.

  In the present invention, priority is given to late arrival as priority processing when a plurality of objects are detected simultaneously.

  Within the specified number of seconds, if the sensor is detected continuously or simultaneously within the processing time of camera PTZ operation, one-shot image generation, camera map plotting, and video recording, the second and subsequent sensor detections cannot be performed. Ignore continuous or simultaneous detection of.

PTZ01 to PTZ03 Surveillance camera (PTZ camera)
S01 to S11 Sensor 500 Video storage device 511 Video contact input monitoring unit 512 Sensor position information recording unit 521 Video input unit 522 Video analysis unit 523 Video recording unit 524 Video distribution unit 531 PTZ control unit 532 Main sub camera setting unit 533 Conversion unit 541 Clock timer unit 542 System configuration information unit 543 System setting information unit 551 Monitoring PC

Claims (2)

A safety monitoring system comprising a plurality of sensors arranged so as to surround an outline of a monitoring target area and a plurality of PTZ cameras for monitoring the monitoring target area,
When a specific one of the plurality of sensors detects a moving object, a main monitoring camera for monitoring the object is determined in advance from the plurality of PTZ cameras,
A plurality of surveillance cameras characterized in that when a moving object is detected by the plurality of sensors, a predetermined PTZ camera is used as a main surveillance camera to perform zoom-up toward the monitoring object. By safety monitoring system. A safety monitoring system comprising a plurality of sensors arranged so as to surround an outline of a monitoring target area and a plurality of PTZ cameras for monitoring the monitoring target area,
When the moving object is detected by the plurality of sensors, a predetermined PTZ camera is used as a main monitoring camera to zoom in on the monitoring object and to display a one-shot image including the monitoring object. A safety surveillance system using a plurality of surveillance cameras, characterized by imaging and recording.

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