JP2008108186A - Security device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To identify guards to automatically start and release a security mode in only areas preliminarily determined per guard in accordance with movements of the guards. <P>SOLUTION: When an intrusion to a guard area entrance is determined (S2, YES) after the security mode is started (S1, YES), a guard is identified by his or her prescribed operation (S3 and S5), and a guard area is determined on the basis of the identification. A control part acquires a distance to the guard (S6) and releases the security mode of the specified guard area by the acquired distance and the guard area (S7). When the guard moves beyond a prescribed distance range, the security mode is started (S8). When the guard cannot be identified (S3, NO), abnormality processing against an intrusion of a suspicious person, or the like is performed (S4). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a security device that performs security by switching a security mode from a start state to a release state when a security guard performs patrol security.

  In recent years, various security sensors have been installed at predetermined locations in buildings such as offices and warehouses. When this security sensor detects an intruder, the security system consists of a mechanical security device that activates an alarm device at the management center and a patrol guard by a security guard. Many systems are used.

  Conventionally, as a security system, when a security guard carries an IC card and approaches the entrance of the security area, the terminal device acquires information identifying the security guard from the IC card, and based on this result, the security sensor circuit in the security area is turned off. To temporarily release the security mode. By this temporary release, a security system is known that can patrol the security area without being detected as an abnormal intruder in the security system (see Patent Document 1: hereinafter, the first conventional technology). Called invention).

Conventionally, a security guard identification sensor dedicated to guards, separate from regular employees, has been provided, and when that sensor detects the entry of a guard, the guard area in charge of the guard is displayed on the screen of the display device. Turn on the lighting device in the security area, turn off the security sensor circuit, and temporarily release the security mode. There is known a system in which a guard can make a patrol guard without erroneously detecting the guard area by this display, and without being detected by the guard system by temporarily releasing the guard mode (see Patent Document 2). Hereinafter referred to as the second conventional invention).
JP-A-2-121100 Japanese Patent Laid-Open No. 10-49786

  However, according to the first conventional invention, the security guard possesses an IC card, and all security guards possessing the IC card can be released from the security mode of all security areas. No consideration is given to the security system according to the ability. In addition, the return to the security start mode is not performed until the timer is set and the timer is set at the same time as the release of the security mode. For this reason, if the patrol guard work ends early in the period before the end of the set time, the guard will move to the next guard area without returning to the guard mode, that is, with the guard mode released. There is a problem that a gap occurs. In order to avoid this problem, it is possible to subdivide the guard area and manage the entrance and exit of guards for each guard area, but this requires a large number of card readers and costs increase. is there. Also, security guards must always have an IC card and go out to patrol guard, and the procedure of taking out and returning the IC card for each security is troublesome.

In the second conventional invention, when the security guard detection sensor detects the entrance of the security guard, the security mode is canceled for all the security areas at once, and when the exit is detected, the security start mode is restored. It is done in a lump. Therefore, since the release state of the security mode of the first guard area is maintained until the guard mode of the last guard area is released, a large gap is generated in the guard. Also, it was troublesome for the security guard to enter the PIN when entering the building.
In the second conventional invention, it is also possible to subdivide the security area and manage the security room entry / exit for each security area. However, in this case, a number of security guard identification sensors must be arranged in the hall. However, there is a problem that the cost is high.

  Further, in both the first and second conventional inventions, the security mode of the guard area is not canceled in advance before the arrival of the guard for the guard area determined in advance.

  Therefore, the present invention has been made in view of such circumstances, and a first object is to make it possible to easily identify a person to be monitored such as a guard, and a second object is to monitor In order to make it possible to set only the security area predetermined for each target person as the security area, the location of the monitoring target person can be detected at the same time as the identification, and the release and start control of the security area can be automatically performed. And, as a result, it is possible to efficiently perform security work in the security area without generating a security gap.

The invention of claim 1 is a security device, and in the security device capable of starting and canceling the security mode, means for recognizing a person to be monitored and guard area information set for each person to be monitored is stored. A means for acquiring guard area information of the monitoring target person based on identification of the monitoring target person, a means for acquiring position information of the monitoring target person, and the guard area information and position information acquired from the storage means. And a means for canceling or starting the security mode of the security area.
According to a second aspect of the present invention, in the security device according to the first aspect, the means for identifying the person to be monitored identifies the person to be monitored by comparing the specific information issued from the person to be monitored with the reference information provided in advance. It is characterized by doing.
According to a third aspect of the present invention, in the security device according to the first or second aspect, the means for canceling or starting the security mode of the security area based on the security area information and the position information is such that the person to be monitored arrives at a predetermined position. The security mode of the security area is canceled when the security zone is released, and the security mode is started when the vehicle leaves a predetermined position.
According to a fourth aspect of the present invention, in the security device according to any one of the first to third aspects, the predetermined position is a position within a predetermined distance before the entrance of the security area.

  ADVANTAGE OF THE INVENTION According to this invention, monitoring subjects, such as a guard, can be identified reliably by a simple method. In addition, as the monitoring target moves, the security mode release and the security mode start of the security area assigned to each monitoring target can be automatically performed. You can go around and enter specific areas. Moreover, it is possible to prevent a third party from entering the security area aiming at the clearance of the security mode release.

First, a security system in which a security device according to the present invention is used will be described with reference to the drawings.
In general, the security system detects an abnormality of a security sensor installed in a room of a building or the like at a management center away from this building, and after constructing a mechanical security system that warns that an abnormality has occurred, It is a system in which a security guard patrols the security area every predetermined time.
FIG. 1 is a diagram showing an overall image of a security system according to an embodiment of the present invention. In the figure, the security system captures the motion of the security guard 1, creates a motion image, and detects the position of the security guard 1, a human body sensor 3 installed on the ceiling of the security area, an open / close window And the center device 7 installed in another building connected to the unlocking sensor 5 installed at the entrance / exit door of the security area and the communication line 6.

  In order to transmit identification information, for example, the security guard 1 raises the arm once for each security guard, or raises the arm twice, for example, for each security guard. It is obliged to perform the operation.

  The camera device 2 is a device having an imaging function and, for example, a laser-type distance measuring function. When the security guard 1 performs a predetermined operation toward the camera device 2, the camera device 2 images the operation. Then, an image obtained by cutting out an image from the captured video every predetermined time (hereinafter referred to as an operation image) is created, and the distance to the guard 1 is measured in real time, and is processed in a predetermined distance unit, for example, 30 cm increments. Information and distance information are transmitted to the center device 7 via the communication line 6.

Here, for example, a technique disclosed in Japanese Patent Application No. 2006-181633 filed earlier by the applicant of the present application is a technique for determining whether or not a security guard action is a predetermined action predetermined for a specific guard. Can be used. In other words, the person to be monitored here specifies a plurality of checkpoints for the regular operation process of the guard, cuts out the photographed image at the checkpoint of the guard's predetermined action photographed by the surveillance camera, and performs the abstraction process. An image is created, and the processed image is expanded and contracted to allow the maximum and minimum allowable image of the guard's movement (ie, the minimum allowable range, for example, to set a range of errors when raising the right hand) An operation and a maximum operation image are created, and if the actual processed image is between them, it is determined that a normal operation is performed), and an image composed of the maximum image and the minimum image is previously stored in the image memory as a reference image. Remember.
This reference image is individually created for all guards and stored in advance in an image memory.

At the time of identification of a security guard, a checkpoint image is acquired from a captured image of a predetermined action performed by the security guard, and a processed image created by performing abstraction processing is compared with all stored reference images, and the processed image is It is determined whether there is a match (that is, whether or not it falls between the minimum and maximum motion images of any reference image). When it is determined that there is a match, the image of the next check point 2 is acquired and compared with the processed image obtained by abstraction processing and the reference image of the point. In this case, checkpoint 2 is checked only for the reference image that conforms to the first checkpoint.
In this way, if it matches the operation images of all the check points designated within a predetermined time, it is determined that the person is a regular guard and the guard is released.

  The human body sensor 3, the window breaking sensor 4 and the unlocking sensor 5 are general-purpose infrared human body sensors and sensors using an electric circuit cutting method for breaking and unlocking the window. Or notify the center of the security company via the center device 7.

The center device 7 is a small computer device.
FIG. 2 is a block diagram showing the configuration of the center device 7, in which a CPU (control unit) 71 is a device that controls the entire security device, a ROM 72 is a device that stores a startup program for the center device 7, and a RAM 73 is a process It is a device that temporarily stores information. Further, the NV-RAM 74 has an operation image for each security guard, a table 1 indicating a relation between the security guard and the security area where the security guard is guarded, and a position of the security area and the security guard (distance from the camera device 2). The table 2 indicating the relationship with Further, the operation unit 75 performs operations such as batch security start / release from the touch key type operation panel, the display unit 76 displays the security status and the like by liquid crystal, and the transmission / reception unit 77 is a security created and measured by the camera device 2. The operation image information and the distance information of the worker 1 are received, a security release / start signal is transmitted to the security area for each security area, and the alarm transmission unit 78 warns the intrusion of a suspicious person into the security area by sounding.

Next, the operation of the security system will be further described with reference to the drawings.
FIG. 3 is a bird's-eye view of a security area on a floor in a building. In the figure, a security area (corridor) 10 is sandwiched between floors 100, security areas 13, 15, and 17 in order from a security area 11 such as an office on one side, and security areas 12 in order from the other side. There are security areas 14 and 16. These security areas 11 to 17 are provided with doors 11d, 12d, 13d, 14d, 15d, 16d and 17d, respectively, so that they can enter and leave the room. The camera device 2 is installed at a high position at the end of the security area (corridor) 10 (right side of the sheet). Note that a, b, c, and d will be described later together with the description of FIG.

  Fig. 4 is a view of the security area on one side from the corridor. In the figure, when the security guard starts patrol security on this floor, the camera is on the entrance side (left side of the page) of the security area (corridor). A predetermined operation is performed toward the device 2, and the center device 7 is made to identify the guard by the identification method already described.

FIG. 5 is a diagram of the table 1 showing the relationship between the guards and the security areas where the guards can guard. In the figure, a circle indicates a security area that can be entered for security purposes, and a cross indicates a security area that cannot be entered.
Security guard A is entrusted with security in security area (corridor) 10 and security areas 11, 13, 15, and 17, and can enter the room. The security guard B is entrusted with security for all areas of the security area (corridor) 10 and the security areas 11 to 17, and the security guard C can guard only the security area (corridor) 10. This table 1 is stored in the NV-RAM 74.

  Further, the NV-RAM 74 stores the relationship between the security area (office room or the like) and the distance x from the camera device 2 in the security area (corridor) of the security guard as the table 2. With this table 2, the center device 7 cancels the security mode of the security area when the security guard arrives at a position 5 meters before the door of the security area.

  FIG. 6 is a table showing the relationship between the security area and the distance x from the camera device 2 in the security area (corridor) of the security guard 1. Referring to FIG. 3 again, a indicates the distance from the camera device 2 in the hallway 10 to the end of the door 11d on the camera device 2 side. Similarly, b represents the distance to the end portion of the door 12d, and hereinafter, the distances to the end portions of the doors 13d and 14d are similarly indicated for c and d.

  Therefore, the table 2 in FIG. 6 writes the security area 11 and the distance from the distance a to the distance a + 5 obtained by adding 5 m as a numerical value in increments of 30 cm. The same applies to the security areas 12, 13, and 14. Although not shown in FIG. 6, the same applies to the security areas 15 to 17.

  Now, for example, when the security section is entered at night and the start of security is instructed from the operation section 75, the control section 71 collectively locks the door, turns off the lighting device, and activates various security sensor circuits. The security area of is shifted to a security start state (security mode).

  In this state, when the security guard A arrives at the security area (corridor) 10 for patrol, the camera apparatus 2 faces the camera device 2 and performs the action determined by the security guard A. Then, the camera device 2 captures the image and creates an operation image, measures the distance to the guard A in real time, processes in 30 cm increments, and transmits the operation image information and the distance information to the center device 7. The center device 7 receives this information by the transmission / reception unit 77, and when this information is received, the control unit 71 abstracts the captured image at the check point specified as described above and the point image. The reference image is compared, and it is determined (identified) that the guard is the guard A. Based on this determination, the control unit 71 refers to the table 1 of the NV-RAM 74 and turns on the power supply of the lighting device in the security area entrusted to the guard A and turns off the connection circuit of the security sensor. Perform the release process.

Here, the operation for releasing / starting the security mode of the security area 11 will be described. The on / off state of the indoor lighting power supply device and the security sensor circuit in the security area 11 is controlled by, for example, a relay connected to the collector of a transistor that controls the security mode. A two-input AND circuit (AND circuit) is connected to the base of the transistor, and an ON signal based on the table 1 sent from the control unit 71, that is, a signal corresponding to a circle mark in the table 1 is connected to one input terminal thereof. Entered. For other input terminals, the control unit 71 refers to the table 2, and for example, the security guard A who is entrusted with security in the security area 11 is an area from the door 11d of the security area 11 to the door 11d (hereinafter referred to as the area 11d). 5m area), and the result is transmitted in real time. When guard A is in the 5 m area, an on signal is input. As a result, the base circuit of the transistor is turned on and the collector circuit becomes conductive, so that the relay operates, the power supply device for the indoor lighting is turned on, the security sensor circuit is turned off, and the security mode is released.
On the other hand, even if it is identified that security guard B is in the 5m area of the door of security area 11, security guard B is not entrusted with security in security area 11, so the transistor base circuit remains off. The relay does not operate and the security mode is not released.

  At this time, when security guard A enters the security area 11 for patrol and leaves the 5m area, the security mode is canceled if the input terminal of the AND circuit is held by the output of the entrance detection sensor etc. simultaneously with the entrance. Is maintained. When the patrol in the security area 11 is completed and the security guard A leaves the room, the AND circuit is no longer held by the entrance detection sensor, but the AND circuit is held again based on the distance information of the 5 m area, and the security mode remains released. And, when security guard A moves out of the 5m area of security area 11 for patrol security of the next security area, there is no distance information input to the AND circuit, so the security mode of security area 11 is immediately the security start mode. Converted to

FIG. 7 is a flowchart of the security mode release operation. The operation for releasing the security mode will be described with reference to this flowchart.
When the security mode is started by the operation of the operation unit 75, the control unit 71 determines whether or not the security mode is started (S1). If started (S1, YES), the camera device 2 determines whether there is an intruder into the security area (corridor) 10 (S2). When the security guard 1 performs a predetermined motion toward the camera device 2, the camera device 2 creates motion image information, and the transmission / reception unit 77 receives the motion image information, so that the control unit 71 determines that there is an intruder. Then (S2, YES), the control unit 71 first determines whether or not the intruder can be identified by referring to the reference motion image information (S3).

  In the operation steps S1 and S2, when the security mode is not started (S1, NO) and when there is no intruder (S2, NO), the process returns to the determination of whether the security mode is started. When it is determined that the security guard cannot be specified in the operation step S3 (S3, NO), it is determined that an abnormality such as an intrusion of a suspicious person has occurred, and an abnormal process such as an acoustic alarm ringing by the alarm transmission unit 78 is performed ( S4).

  When the security guard can be identified (S3, YES), the table 1 is referenced to identify whether the security guard is A, B, or C (S5). Make an area decision.

  Next, the control part 71 acquires the distance from the transmission / reception part 77 to the guard measured by the camera apparatus 2 via the communication line 6 (S6). Further, referring to Table 2, the security mode release process of the security area is performed based on the acquired distance and the security area of the security guard identified (S7). Next, when the position of the security guard in the security area (corridor) is acquired and the security guard A moves beyond the distance range of the table 2, the security mode released from the security area is restored and the security mode is set again. Start (S8).

  FIG. 8 is a diagram illustrating a state transition of security release and start by a security officer in charge of security in all security areas. In the figure, a security guard (in this case, security guard B) cancels the security mode of area 11 and performs security, and when moving to area 12 at the end, security mode of area 12 is canceled in advance. Areas 13 to 16 are under security (state 1). Subsequently, security of the area 12 is performed, and when moving to the area 13 at the end, the security mode of the area 13 is canceled in advance. Area 11 and areas 14 to 16 are under security (state 2). Thereafter, the area is similarly guarded, and when moving to the next area along with the end, the state 3 is changed to the state 4.

  In this embodiment, the action for identifying the guard is an action of raising the hand by the guard once or twice, but these actions are performed using a hand flag signal action or an action of drawing a character in the air. It is also possible to identify a security guard by comparing with the reference action. An area with an arbitrary distance width can be set for the 5 m area.

According to the embodiment of the present invention, it is not necessary for the security guard to have an IC card or the like, and the security guard can be easily identified only by a predetermined operation, depending on the security guard's reliability, security work capability, etc. The guard area can be guarded in advance for each guard, and when the guard arrives at a position 5 m before the door of the guard area, the guard mode of the guard area is canceled in advance. In addition, since the security mode is restored when moving away from the position of the door, it is possible to efficiently perform security work in the security area without generating a security gap.
The security area is not limited to a room, and can be set in a corridor corresponding to each room. 3 and 4, reference numerals 20 to 23 denote security areas in the hallway.
If the security area is also set in the hallway, for example, the security guard C cannot enter the hallway portion other than the hallway corresponding to the security area 20 of the hallway. Warning measures are taken, such as reporting to the side and sounding an alarm. Further, in this setting, it is necessary to first release the security in the hallway before releasing the security of the room, so that the security becomes more strict and the safety management is further improved.

  In the above description, the information transmitted by the security guard for identification is that the security guard performs an operation determined in advance for each security guard in front of the surveillance camera, and this is captured by the surveillance camera and captured. Although it was described as determining whether it is a suspicious person or a security guard, the information transmitted by the security guard for identification is not limited to this, for example, an LED that emits light at a different light emission timing for each security guard, or a different color Even if a light-emitting body (for example, a flashlight) is carried and the light is detected by a surveillance camera, the light is detected, or, for example, a security guard is equipped with a reflector that generates reflected light of a predetermined wavelength and the reflection is performed. You may identify a guard from the reflected light of a body.

It is a figure which shows the whole image of a security system. It is a block diagram which shows the structure of a center apparatus. It is the figure which looked at the security area of a certain floor in a building. It is the figure which looked at the security area of the one side from the corridor. It is a figure of the table which shows the relationship between the guard and the guard area which the said guard can guard. It is a figure of the table which shows the relationship between the security area and the distance from the monitoring subject's camera apparatus. It is a figure which shows the operation | movement flow of a start and cancellation | release of guard mode. It is a figure which shows the transition of a security mode cancellation | release and a start state.

Explanation of symbols

1 .... person to be monitored 2 .... camera device 3 .... human body sensor 4 .... window break sensor 5, ... door unlocking sensor 7, ... center device 71 ... CPU, 72 ... ROM, 73..RAM, 74..NV-RAM, 75..Operating section, 76..Display section, 77..Transmission / reception section, 78..Alarm transmission section.

Claims (4)

In the security device that can start and release the security mode,
A means of identifying the person being monitored;
Means for storing guard area information set for each person to be monitored;
Means for obtaining guard area information of the monitoring subject based on the identification of the monitoring subject;
Means for obtaining position information of the monitoring subject;
Means for canceling or starting the security mode of the guard area based on the guard area information and position information acquired from the storage means;
A security device characterized by comprising: The security device according to claim 1,
The security device is characterized in that the means for identifying the monitoring target person identifies the monitoring target person by comparing specific information issued from the monitoring target person with reference information provided in advance. In the security device according to claim 1 or 2,
The means for canceling or starting the guard mode of the guard area based on the guard area information and the position information cancels the guard mode of the guard area when the monitoring target arrives at the predetermined position and leaves the predetermined position. A security device characterized by starting a security mode. In the security device according to any one of claims 1 to 3,
The said predetermined position is a position within the predetermined distance in front of the entrance of a security area, The security apparatus characterized by the above-mentioned.

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