JP2007233692A - Intrusion monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intrusion monitoring system for improving the accuracy in detecting illegal entry due to tailgating. <P>SOLUTION: The intrusion monitoring system 1 determines intrusion of an unauthorized person when an intrusion detecting apparatus 16 permits the entry to a security area S and an interruption of light or sound wave corresponding to a plurality of persons is detected. The intrusion monitoring system 1 detects the number of persons passing through by an infrared ray interruption even after the authorization, so that the entry to the security area S of the unauthorized person by tailgating can be determined. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an intrusion monitoring system.

Conventionally, in an entrance / exit management device, there is a problem of so-called “joint”, in which an unauthenticated person (suspicious person) passes through a gate almost simultaneously after an authorized person who has been properly authenticated. . As a technique for solving this problem, there is a technique using a weight sensor and image sensing, and the former has a weight sensor on each of the entrance side and the exit side of the gate, and the values measured by both weight sensors do not match. In this case, it is determined to be accompanied (see, for example, Patent Document 1). On the other hand, the latter counts the number of users from the image captured by the camera, and determines that the number of users does not coincide with the number of users authenticated by the reader device (see, for example, Patent Document 2). ).
JP-A-9-305815 Japanese Patent Laid-Open No. 2005-272088

  However, in the former entrance / exit management device, the value of the weight sensor on the exit side is detected after the value of the weight sensor on the entrance side becomes “0”, so that the subsequent person will enter quickly. In this case, the next person enters before the value of the weight sensor on the entrance side becomes “0”, the exact weight of the person who first tried to enter cannot be known, and the companion cannot be determined. is there.

  In the latter entry / exit management device, the number of users is counted by cutting out an image corresponding to the head, but since the height of the user is high or low, a low user hidden behind a high user is not included. You may not be able to count. For this reason, in a situation where a large number of users are waiting for authentication, it may be impossible to accurately detect sharing.

  The present invention has been proposed in view of the above-described circumstances, and an object thereof is to provide an intrusion monitoring system capable of improving the accuracy of detection of unauthorized entry by sharing.

  The intrusion monitoring system according to the present invention detects that a non-authenticated person has entered a predetermined area at the same time as a properly authenticated certifier enters the predetermined area. Means and intrusion detection means. The authentication means permits entry of the person who owns the authenticated means into the predetermined area when the authentication information is transmitted from the authenticated means storing the authentication information indicating that it has the qualification to enter the predetermined area. To do. The blocking detection means blocks light or sound waves having a directivity greater than or equal to a predetermined direction from an activation part provided at an entrance of a predetermined area toward a passive part provided on the opposite side of the activation part across the entrance. This is to detect whether or not it has been done. The intrusion detection means determines that an unauthenticated person has entered when the authentication means permits entry into a predetermined area and the blockage detection means detects the blockage of light or sound waves corresponding to a plurality of persons. It is.

  According to the present invention, it is determined that a non-authenticated person has entered when the authentication means permits entry into a predetermined area and the interruption detection means detects light or sound wave equivalent to a plurality of persons. . For this reason, even if authenticated, the number of passing humans can be detected by blocking light or sound waves, and it can be determined whether one person has entered for one authentication. It is possible to determine whether the non-authenticated person has entered the predetermined area. In particular, since the companion determination by the weight sensor or the image processing is not performed, the value detected by the weight sensor does not become unstable, and a short non-authenticated person cannot be detected. Therefore, it is possible to improve the accuracy with respect to detection of unauthorized entry by sharing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of an intrusion monitoring system according to an embodiment of the present invention. The intrusion monitoring system 1 detects that a non-authenticated person has entered the security area S substantially simultaneously with the entry of the authenticator who has been properly authenticated into the security area (predetermined area) S. This intrusion monitoring system 1 includes an IC card (authenticated means) 10, an entrance card reader (authentication means) 12a, an exit card reader 12b, an entrance / exit control device 14, an intrusion detection device 16, an entrance / exit management device 18, and an imaging. It comprises a device (imaging means) 20, an alarm device 22, an intruder image recording server 24, a display device (display means) 26, an image switching device 28, a normal image setting PC 30, and an alarm release button 32.

  The IC card 10 stores authentication information indicating that it has a qualification to enter the security area S. For example, an extremely thin semiconductor integrated circuit (IC chip) is embedded in a plastic card, and the IC chip is embedded in this IC chip. The authentication information (card ID or the like) is stored.

  The entrance card reader 12a is installed at a position before entering the security area S, and reads authentication information from the IC card 10 in a non-contact manner. The admission card reader 12a determines that the person who owns the IC card 10 is an authenticator and permits entry into the security area S when authentication information stored in the IC card 10 is transmitted. It has become. When entry into the security area S is permitted, the entrance card reader 12a transmits an entrance signal Sa indicating that entry is permitted together with the authentication information to the entrance / exit control device 14.

  The exit card reader 12b has the same configuration, and is installed at a position before leaving the security area S, and holds the IC card 10 when authentication information stored in the IC card 10 is transmitted. The person is judged as an authenticator, and the security area S is permitted to leave. At this time, the exit card reader 12a is configured to transmit an exit signal Sb indicating that the exit is permitted together with the authentication information to the entrance / exit control device 14.

  The entrance / exit control device 14 is configured to transmit the input authentication information, the entrance signal Sa, and the exit signal Sb to the intrusion detection device 16. Further, the entrance / exit control device 14 is configured to transmit the authentication information, the entrance signal Sa, and the exit signal Sb to the entrance / exit management device 18.

  The intrusion detection device 16 is provided in a passage or the like, and detects that a non-authenticated person has entered the security area S. Specifically, an infra-red detector is employed, and the non-authenticated person uses infrared rays. An intrusion into the security area S is detected. Here, the intrusion detection device 16 normally turns on a warning mode that warns of the intruder's intrusion. However, if the intrusion detection device 16 is permitted to enter the security area S by authentication, the intruder detection device 16 permits the intruder to enter. It becomes a state to be wary of the intruder of the unauthenticated person by the accompanying, and the vigilance mode is turned off.

  2 is a detailed configuration diagram of the intrusion detection device 16 shown in FIG. 1, (a) is a block diagram showing details of the intrusion detection device 16, and (b) is a view of the intrusion detection device 16 from directly above. It shows the state of infrared rays when As shown in FIG. 2A, the intrusion detection device 16 includes sensor groups 16a to 16h, a blocking detection unit 16i, a calculation unit 16j, and an intrusion detection unit (intrusion detection unit) 16k.

  The sensor groups 16a to 16h include activation units 16a to 16d and passive units 16e to 16h. The activation units 16a to 16d are provided on one end side of the entrance of the security area S, and emit infrared rays having directivity of a predetermined level or more. For example, four starters 16a to 16d are provided, each configured to emit infrared rays. Moreover, when the intrusion detection apparatus 16 is seen from right above, the starting parts 16a-16d are arrange | positioned so that two infrared rays may be radiate | emitted as shown in FIG.2 (b).

  Further, the passive parts 16e to 16h are provided on the opposite side to the activation parts 16a to 16d (that is, the other end side of the entry port) across the entrance, and the infrared light from the activation parts 16a to 16d is incident thereon. It has become so. The passive units 16e to 16h are provided in the same manner as the activation units 16a to 16d. In addition, each of the four passive units 16e to 16h is configured to receive infrared rays from one of the four activation units 16a to 16d.

  The shut-off detection unit 16i is configured to input information on whether or not infrared rays are incident on the passive units 16e to 16h. When any object or the like passes through the entrance, the infrared rays from the activation units 16a to 16d to the passive units 16e to 16h are blocked and the infrared rays do not enter. The interruption detection unit 16i detects the interruption of infrared rays accompanying the passage of an object or the like.

  The calculation unit 16j operates when the alert mode is turned off, and determines whether or not there is one person entering the security area S from the time when the block detection is detected by the block detection unit 16i. To do. Moreover, the calculating part 16j transmits the information of whether the intruder was one person to the intrusion detection part 16k.

  The intrusion detection unit 16k determines whether or not an unauthenticated person has entered. That is, the intrusion detection unit 16k detects that an unauthenticated person has intruded when the blocking detection unit 16i detects an infrared block when the admission card reader 12a is not allowed to enter the security area S when the warning mode is on. Judge that there was. When the entrance card reader 12a permits entry into the security area S and the warning mode is turned off, the intrusion detection unit 16k determines as follows. That is, the intrusion detection unit 16k determines that the authenticator has entered when the calculation unit 16j determines that there is one intruder, and the calculation unit 16j determines that there are a plurality of intruders. Sometimes it is determined that a non-authenticated person has entered. Further, the intrusion detection unit 16k is configured to output an intrusion detection signal Sc indicating that there has been an intrusion when it is determined that an unauthenticated person has intruded. The intrusion detection signal Sc is transmitted to the imaging device 20, the alarm device 22, and the image switching device 28 through the entrance / exit control device 14.

  In the above, the activation units 16a to 16d and the passive units 16e to 16h are configured to emit infrared rays, but are not limited thereto. For example, light or sound waves (ultrasonic waves) having a predetermined directivity or more are used. May be emitted. Further, the activation units 16a to 16d and the passive units 16e to 16h are not limited to four, but may be other numbers.

  The entry / exit management device 18 records and manages the entry / exit of the person indicated by the ID based on the authentication information (card ID) stored in the IC card 10. For example, a log management server is used. The entrance / exit management device 18 determines which of the entrance card reader 12a and the exit card reader 12b has received the authentication information and which of the two infrared rays shown in FIG. Based on this, it is determined whether the certifier has entered or exited, and records are managed.

  The imaging device 20 is a Web camera that uses the entrance of the security area S as an imaging area. When the intrusion detection signal Sc is input, the imaging device 20 is configured to start imaging of the entrance and transmit intruder image data to the intruder image recording server 24. As a result, the intruder image recording server 24 records the image of the intruder. As the intruder image recording server 24, for example, an image recording PC is used.

  The imaging device 20 and the intruder image recording server 24 may have the following configurations. For example, the imaging device 20 always images the entrance and transmits image data to the intruder image recording server 24, and the intruder image recording server 24 temporarily records the transmitted image data. The intrusion detection signal Sc is transmitted to the intruder image recording server 24 instead of the imaging device 20, and when the intruder image recording server 24 inputs the intrusion detection signal Sc, the input time point of the signal Sc Leave image data for several seconds before and after and erase the others. Thereby, the imaging device 20 and the intruder image recording server 24 may be configured to store an image before the intruder is detected.

  The alarm device 22 issues an alarm when the intrusion detection signal Sc is input. The alarm device 22 includes a warning light and a sound output unit. The warning light warns that an intrusion has occurred due to light emission, and the sound output unit warns that an intrusion has occurred by emitting an alarm sound. It is like that.

  The display device 26 displays the video imaged by the imaging device 20 and recorded by the intruder image recording server 24. An image switching device 28 (for example, an analog RGB switcher) is connected to the display device 26. When the intrusion detection signal Sc is input to the image switching device 28, the image switching device 28 causes the display device 26 to display the video recorded by the intruder image recording server 24. On the other hand, when the intrusion detection signal Sc is not input, the image switching device 28 causes the display device 26 to display the video set by the normal image setting PC 30.

  The alarm cancel button 32 is a confirmation button for a system administrator or the like to confirm and cancel the alarm state. When this button is pressed, the cancel signal Sd is output, and the imaging device 20 stops the imaging, and the alarm device 22 cancels the alarm. Further, the image switching device 28 switches the video to be displayed on the display device 26 to the video set by the normal image setting PC 30.

  Next, the operation of the intrusion monitoring system 1 according to this embodiment will be described. FIG. 3 is a flowchart showing the operation of the intrusion monitoring system 1 according to the present embodiment. Note that the flowchart shown in FIG. 3 starts when the intrusion monitoring system 1 is powered on and ends when the power is turned off.

  As shown in FIG. 3, first, the intrusion detection device 16 turns on the alert mode (ST1). Next, the intrusion detection device 16 determines whether or not the entrance card reader 12a and the exit card reader 12b are authenticated (ST2). Here, when it is determined that authentication has not been performed (ST2: NO), the intrusion detection unit 16k determines whether fraud has been detected, that is, whether intrusion has been detected (ST3). If it is determined that no intrusion has been detected (ST3: NO), the process proceeds to step ST1. On the other hand, if it is determined that an intrusion has been detected (ST3: YES), the process proceeds to step ST8.

  If it is determined that the entry / exit has been authenticated (ST2: YES), the intrusion detection unit 16k turns off the alert mode (ST4). Thereby, the approach monitoring system 1 permits entry for one certifier and is wary of companionship. Next, the block detector 16i determines whether or not the authenticator has passed based on whether or not the infrared ray has been blocked (ST5). When it is determined that the authenticator has not passed (ST5: NO), the intrusion detection device 16 determines whether or not a certain time has passed (ST6). If it is determined that the predetermined time has not elapsed (ST6: NO), the process proceeds to step ST5. On the other hand, if it is determined that a certain time has elapsed (ST6: YES), the process proceeds to step ST1.

  If it is determined that the authenticator has passed (ST5: YES), the calculation unit 16j determines whether or not only the authenticator has passed based on whether or not the infrared ray corresponding to one person has been blocked (ST7). ). If it is determined that only the authenticator has passed (ST7: YES), the process proceeds to step ST1. On the other hand, when it is determined that there is a block of infrared rays for a plurality of persons and it is not passed only by the authenticator (ST7: NO), that is, when it is determined that there is a companion, the process proceeds to step ST8.

  In step ST8, the imaging device 20 starts imaging, and the intruder image recording server 24 records images captured by the imaging device 20. Further, the alarm device 22 starts an alarm (ST8). Next, the image switching device 28 switches the display image. As a result, the display device 26 stops displaying the video set in the normal image setting PC 30, and the intruder image recording server 24 displays the recorded video (ST9).

  Next, the intrusion monitoring system 1 determines whether an alarm release operation has been performed, that is, whether the alarm release button 32 has been pressed (ST10). If it is determined that the alarm release button 32 has not been pressed (ST10: NO), the process proceeds to step ST9. If it is determined that the alarm release button 32 has been pressed (ST10: YES), the imaging device 20 ends the imaging, and the intruder image recording server 24 ends the image recording. Further, the alarm device 22 ends the alarm, and the image switching device 28 switches the display image, and causes the display device 26 to display the image set in the normal image setting PC 30 (ST11). Then, the process proceeds to step ST1.

  In this way, according to the intrusion monitoring system 1 according to the embodiment, the entrance card reader 12a is allowed to enter the security area S, and the blocking detector 16i blocks light or sound waves corresponding to a plurality of persons. If it is detected, it is determined that the intruder has entered. For this reason, even if authenticated, the number of passing humans can be detected by blocking light or sound waves, and it can be determined whether one person has entered for one authentication. It is possible to determine whether the non-authenticated person has entered the security area S. In particular, since the companion determination by the weight sensor or the image processing is not performed, the value detected by the weight sensor does not become unstable, and a short non-authenticated person cannot be detected. Therefore, it is possible to improve the accuracy with respect to detection of unauthorized entry by sharing.

  Further, when the entrance card reader 12a does not permit entry into the security area S and the blockade detection unit 16i detects the blockage of light or sound waves, it is determined that the intruder has entered. For this reason, it is possible to determine the intrusion of a person who has not been authenticated.

  In addition, when it is determined that a non-authenticated person has intruded, an image captured by the imaging device 20 is displayed on the display device 26. Therefore, it is possible to check the video of the non-authenticated person who has illegally entered.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and may be modified without departing from the gist of the present invention.

  For example, in the present embodiment, the intrusion detection device 16 is provided in the passage, but is not limited thereto, and may be provided in front of the door, or may be provided in another location. Further, the intrusion detection device 16 is not limited to a configuration that emits infrared rays, and may have a configuration that emits light or sound waves having directivity of a predetermined level or more. Here, the directivity of a predetermined level or higher is sufficient if it can detect the passage of an authenticator or the like. That is, it is only necessary to emit light or sound waves having such intensity that the passage of the authenticator or the like can be detected in the direction from the activation units 16a to 16d toward the passive units 16e to 16h. It is particularly desirable that the directivity be narrow enough to prevent the two infrared rays from crossing each other as shown in FIG. Furthermore, it is desirable that the distance between the activation parts 16a to 16d and the passive parts 16e to 16h of the intrusion detection device 16 is such that one person can pass through, for example, the distance is preferably 30 cm to 1.5 m. In this embodiment, the entrance card reader 12a and the exit card reader 12b are provided. However, the card reader 12a may be replaced by a single card reader, for example, by being provided above the intrusion detection device 16. . In the present embodiment, the IC card 10 transmits information to the entrance card reader 12a and the exit card reader 12b in a non-contact manner.

It is a block diagram of the intrusion monitoring system which concerns on embodiment of this invention. It is a detailed block diagram of the intrusion detection device shown in FIG. 1, (a) is a block diagram showing the details of the intrusion detection device, (b) is a state of infrared when the intrusion detection device is viewed from directly above. Show. It is a flowchart which shows operation | movement of the intrusion monitoring system which concerns on this embodiment.

Explanation of symbols

1 ... Intrusion monitoring system 10 ... IC card (authenticated means)
12a ... Entrance card reader (authentication means)
12b ... Exit card reader 14 ... Entrance / exit control device 16 ... Intrusion detection devices 16a-16h ... Sensor groups 16a-16d ... Start-up unit 16e-16h ... Passive unit 16i ... Blocking detection unit (blocking detection means)
16j ... arithmetic unit 16k ... intrusion detection unit (intrusion detection means)
18 ... Entrance / exit management device 20 ... Imaging device (imaging means)
22 ... Alarm device 24 ... Intruder image recording server 26 ... Display device (display means)
28 ... Image switching device 30 ... Normal image setting PC
32 ... Alarm release button S ... Security area (predetermined area)
Sa ... Entrance signal Sb ... Exit signal Sc ... Intrusion detection signal Sd ... Release signal

Claims (3)

An intrusion monitoring system that detects that a non-authenticated person has entered the predetermined area at the same time as an authenticator who has been properly authenticated enters the predetermined area,
When the authentication information is transmitted from the authenticated means storing the authentication information indicating that it has the entry qualification to the predetermined area, the person having the authenticated means is allowed to enter the predetermined area. Authentication means;
Whether or not light or sound waves having a directivity greater than or equal to a predetermined direction from the activation unit provided at the entrance of the predetermined area toward the passive unit provided on the opposite side of the activation unit across the entrance is determined. Interception detecting means for detecting
Intrusion detection means for determining that an intruder is intruding when entry to the predetermined area is permitted by the authentication means and light or sound wave equivalent to a plurality of persons is detected by the interruption detection means. When,
An intrusion monitoring system comprising: The intrusion detection means determines that the intruder is intruded when entry to the predetermined area is not permitted by the authentication means and light or sound wave interruption is detected by the interruption detection means. The intrusion monitoring system according to claim 1, wherein: An imaging means having an entrance of the predetermined area as an imaging area;
Display means for displaying the video imaged by the imaging means,
The intrusion detection means outputs an intrusion detection signal indicating that there is an intrusion when it is determined that the intruder is an intruder.
The intrusion according to claim 1, wherein the display unit displays an image captured by the imaging unit when the intrusion detection signal is output by the intrusion detection unit. Monitoring system.

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