JP5117063B2 - Access control system and access control method - Google Patents

Description

  The present invention relates to an entrance / exit management system that is installed to manage the entrance / exit of a person for the purpose of security, for example, in a building such as a nuclear facility, a company, a bank, a government office, or the like, and an entrance / exit management method using such a system.

  In recent years, various entrance / exit management systems for strictly managing entrance / exit to / from a specific building or room have been developed due to the importance of ensuring security in a company or the like associated with advanced computerization (for example, see Patent Documents 1 and 2). . This entrance / exit management system includes, for example, a plurality of gate devices and a central management device that centrally manages the plurality of gate devices. Here, each gate device performs reading of an ID (personal identification information) card, determination of this ID card, gate control when the read content is correct, output of the read content to the centralized management device, and the like. Further, the centralized management device checks the passing state in the building by each ID card according to the reading result of the ID card from each gate, and manages the normal state and the abnormal state.

  On the other hand, in recent years, in addition to the deterioration in security as seen in crimes such as theft, the risk of vandalism by global criminal organizations such as terrorist organizations has increased. For this reason, monitoring of occurrence of abnormalities is becoming more and more important particularly in nuclear power plants, nuclear fuel processing facilities, nuclear facilities such as radioactive material reprocessing facilities, or buildings of companies, banks, government offices and the like. In addition to determining the entrance and exit of people in these facilities or buildings and grasping the passage situation, it is essential to grasp the occurrence of abnormal events in the above facilities or buildings and to quickly determine how to deal with abnormalities. ing.

As an entrance / exit management system capable of coping with the occurrence of the abnormality, it is conceivable to place a supervisor at each gate. In this case, however, the management cost increases significantly. Therefore, for example, there is a system in which video devices are installed in each of the plurality of gate devices, and a small number of monitoring personnel can constantly monitor the video in a monitoring operation room where the above-described central management device is installed. Has been developed.
JP-A-5-79231 JP-A-9-305815

  However, the access control system in which the video device is added to each gate device has the following problems.

  The first is that it takes time to specify the occurrence of an abnormality when the monitor overlooks the video when an abnormality occurs, or when it is desired to view a detailed video again, and the countermeasure cannot be quickly taken. When an abnormality occurs during gate traffic, the time of occurrence is specified on the alarm guidance screen of the host computer provided in the central control device, and the video recorded on a videotape or DVD (digital versatile disc) in advance is wound. An anomaly is identified by returning or searching. However, the amount of video that can be captured and stored in the video device becomes enormous, and it takes time to rewind or search the video, and delays in determining how to deal with an abnormality.

  The second problem is that it is necessary to save a video with a reduced capacity such as time-lapse photography or to regularly exchange videotapes or DVDs because of the video capacity stored in the video device.

  The third problem is that it is impossible to determine whether the abnormality is caused by an illegal act by the original passerby, or other natural phenomenon (wind pressure, etc.) or equipment failure. That must be judged. When the abnormality is not caused by a passerby, in order to identify the cause, it is necessary to scrutinize the video in detail, which requires a great deal of time and labor.

  The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide an entry / exit management system that solves the above-described problems, enables quick grasp of an abnormal event that occurs, and allows quick determination of countermeasures against the occurrence of the abnormality. Objective.

In order to achieve the above object, the access control system according to the present invention, the access control gate passerby passes, the access control system comprising a central control device for centrally managing said output entry management gate, by the passer Detection means for detecting entry / exit of the entry / exit management gate and outputting a detection signal, and monitoring the entry / exit management gate until the passer- by enters the entry / exit management gate based on the detection signal from the detection means and image capturing means and photographed to obtain the first image data, the first image storing means to store the first image data acquired by the image photographing means, said detection signal from said detecting means detects an abnormal event occurring in the access control gate based on a gate abnormality determination processing means for outputting a gate abnormality signal representing the occurrence of the abnormal event, the first Of said first image data stored in the image storage means, the acquired been taken in the gate abnormality determination means and said gate predetermined time before and after the abnormal event upon occurrence represented by the abnormal signal from the a second image storing means for storing the second video data, the provided manages the passage of the access control gates of the passerby, and characterized by monitoring the abnormal event occurring in the access control gate To do.
Further, the access control method according to the present invention is an access control method for managing the passage of the access control gate by a passer- by, and detecting the entrance / exit of the access control gate by the passer-by to output a detection signal, the detection get the first video data by monitoring the access control gate to exit from said passer based on the signal enters the access control gate shooting, the first image storing means said first image data It resides coercive in said detects an abnormal event generated in the access control gate based on a detection signal, its output a gate abnormal signal indicating the occurrence of the abnormal event, are stored in the first image storing means and said Of the first video data, the second video data acquired within a predetermined time before and after the occurrence of the abnormal event represented by the gate abnormal signal is stored in a second video storage unit, and the first video data is stored in the first video data. image storage means To erase sequentially said first video data saved from old, characterized by.

  According to the present invention, in managing the passage of a passer's gate, it is possible to quickly grasp an abnormal event and to quickly determine whether to deal with the occurrence of the abnormality.

  Preferred embodiments of the present invention will be described below with reference to the drawings. Here, the same or similar parts are denoted by common reference numerals, and redundant description is omitted.

  FIG. 1 is a block diagram showing a schematic configuration of an access control system according to the present embodiment. As shown in FIG. 1, in the access control system 10, for example, a central processing control device 10a installed in a monitoring room and a terminal processing device 10b installed in a required monitoring area of a nuclear facility or building are connected to a communication network such as a LAN. Are connected and formed.

  Here, the central processing control device 10a includes a centralized management device 11 and a monitoring operation device 12 as main components. The centralized management apparatus 11 has a host computer including a CPU, an ID data management unit, an image, a memory unit for abnormal events, and the like. Then, all information transmitted from the terminal processing apparatus 10b is processed or analyzed in a lump, and gates described later are further controlled and managed. The monitoring operation device 12 includes a video display monitor, an abnormality display device, an alarm device, or various switches managed by a monitor such as a terminal selection switch and a gate control touch switch.

  As a main configuration, the terminal processing apparatus 10b includes an access management gate 13 and a gate controller 14 at a plurality of gates installed in each monitoring area. For example, first access control gate and first gate control controller, second access control gate and second gate control controller,... N access control gates 13 and gate control of nth access control gate and nth gate control controller A controller 14 is installed at the gate in the required area. These entrance / exit management gate 13 and gate control controller 14 are connected to the centralized management device 11 by a cable 15 of a communication line.

  Here, the access control gate 13 is provided with an ID card reader, a gate door opening / closing mechanism, and the like. The passerby inserts his / her ID card into the ID card reader, receives a test, and passes through the gate. The gate controller 14 is provided with, for example, a microcomputer and a memory unit so that the access management gate 13 can be controlled locally.

  Then, the access control gate 13 and the gate controller 14 installed in each of the plurality of gates read the passer's ID card, gate control when the read contents of the ID card are correct, and the centralized management device for the read contents 11 is output. The centralized management device 11 collectively checks the passing state of each ID card in the facility or building according to the reading result of the ID card from each gate, and displays the normal or abnormal state on the display. . In this way, the central processing control device 10a and the terminal processing device 10b manage the passers-by of the access control gate 13 for passers-by.

  Further, the access management system 10 can efficiently monitor abnormal events at the access management gate 13. Hereinafter, monitoring of this abnormal event will be described in detail.

  FIG. 2 is a block diagram illustrating a schematic configuration of the terminal processing device 10b. Each of the above-described entry / exit management gates 13 has, as a characteristic configuration of the present embodiment, a video device 16 with a video data storage function, a video temporary storage disk 17, and a video for copying a video stored in the temporary storage disk 17 when an abnormality occurs. A book storage disk 18 is provided. When it is determined that the passer-by has entered the gate based on detection signals from the various sensors 20 input to the passer-by detection processing unit 19, the video with video data storage function is given by a command from the video storage request processing unit 21. The device 16 starts shooting and recording its video. Then, when it is detected by the detection signals of the various sensors 20 that the passer-by has left the gate, the above shooting and video recording are ended.

  Here, for example, an optical sensor, a load cell, a gate door open / close sensor, a door limit switch, and the like are used as various sensors 20 that detect an abnormal event in the abnormality detection means. Alternatively, a part thereof may be substituted with a detection signal from the ID card reader.

  The recorded video is stored in the video temporary storage disk 17 constituting the first video storage means from the video device 16 with video data storage function. Such shooting, video recording, and temporary storage thereof are preferably performed every time a passerby passes through the access control gate 13. When the capacity of the video data stored in the video temporary storage disk 17 is full, the old data is overwritten.

  The gate controller 14 includes a gate abnormality determination processing unit 22 that determines an abnormal level of an abnormal event and whether or not an abnormality has occurred in the abnormality detection unit. The gate abnormality determination processing unit 22 determines the abnormality level of the abnormal event at the gate by comparing the detection signal input from the various sensors 20 with its reference value, and determines whether or not an abnormality has occurred. Here, when an abnormality has occurred, a gate abnormality signal is transmitted to the input / output processing unit 23 in the access control gate 13.

  Then, through a command from the video storage request processing unit 21, a corresponding main video that has already been temporarily stored in the video temporary storage disk 17 from the video device 16 with the video data storage function is stored in the video main image constituting the second video storage unit. The data is copied to the disk 18. Here, the passing video stored in the video device 16 with the video data storage function can be copied to the video main storage disk 18. If the video device 16 constituting the video photographing means does not have a video data storage function, the video temporarily stored in the video temporary storage disk 17 is copied. In such a video copy, a video shot within a predetermined time before and after the occurrence of an abnormality is transferred. Here, the predetermined time can be arbitrarily set from the monitoring operation device 12.

  In addition to the video copy as described above, the image processing unit 24 determines whether the gate abnormality is human or not, and transmits the result to the gate abnormality determination processing unit 22 via the input / output processing unit 23.

  For the detection and determination of the abnormal state of the gate, for example, various sensors 20 such as a pressure sensor, a temperature sensor, a gas sensor, and a vibration sensor are used in addition to a light sensor, a load cell, a gate door open / close sensor, and a door limit switch. Is done.

  With such a configuration, the capacity required for video recording is reduced, and the entrance / exit management gate 13 can be easily reduced in size and cost. In addition, monitoring and analysis when an abnormality occurs can be performed quickly and easily.

  FIG. 3 is a block diagram showing a schematic configuration of the terminal processing device 10b and the central processing control device 10a related to transmission / reception of the gate abnormality signal and the video signal. As shown in FIG. 3, the video data stored in the video main storage disk 18 at the time of occurrence of abnormality is controlled from the video device 16 with the video data storage function of the access management gate 13 via the video transmission unit 25 and central processing control. The data is transmitted to the central management device 11 of the device 10a. The transmitted video data at the time of occurrence of an abnormality is received by, for example, the video / data reception processing unit 26 of the CPU of the centralized management device 11 installed in the monitoring room, and the video at the time of abnormality is stored in the video / data storage disk 27. To do.

  The analysis result of the gate abnormality input to the gate abnormality determination processing unit 22 of the gate controller 14 is transmitted to the video / data reception processing unit 26 of the CPU via the signal transmission unit 28. It has become.

  The video data at the time of abnormality stored in the video / data storage disk 27 is transmitted to the video monitor 31 through the video display processing unit 30 in response to a request from the display PC (personal computer) 29 of the monitoring operation device 12. Projected. At this time, the analysis result of the abnormality content transmitted from the gate controller 14 can also be displayed on the video monitor 31 from the video / data storage disk 27. The real-time video in the access control gate 13 is always displayed on the video monitor 31 via the video transmission unit 25, the video / data reception processing unit 26, the video display processing unit 30, and the display PC 29. .

  In such a configuration, the video monitor 31 has a function that allows the gate operation to be performed by a touch operation while watching the video from the entrance / exit management gate 13 as well as monitoring the gate. It is easy to remarkably improve.

  FIG. 4 is a schematic diagram showing transmission / reception of gate abnormality signals and video signals between the entrance / exit management gates 13 and gate control controllers 14 provided in a plurality of gates and the centralized management device 11. As shown in FIG. 4, the host computer 32 in the centralized management apparatus 11 can exchange information with each of the first to n-th gates including a plurality of gates 34 via the communication network 33. ing.

  For example, the video transmission unit 25 of each of the entrance / exit management gates 13 in the first gate to the nth gate is connected to the host computer 32 via the communication network 33. In addition, the signal transmission unit 28 of each gate controller 14 in the first to n-th gates is also connected to the host computer 32 via the communication network 33.

  As described above, in the access control system 10, the central processing control device 10a and the terminal processing device 10b are communicatively connected via a communication network, thereby enabling a large-capacity communication network for optical communication, for example. Then, the video / data with an abnormality occurring at the same time can be transmitted / received without losing the monitoring.

  Next, the operation procedure of the aforementioned access control system 10 will be described with reference to FIGS. FIG. 5 is a flowchart showing an operation procedure of video recording in the access control gate 13, and FIG. 6 is a flowchart showing an operation procedure when the abnormality occurs. As described above, video shooting and video recording at the entrance / exit management gate 13 may be performed between the gate entrance and exit of the passerby. 5 and 6 is a partial processing loop.

  As shown in FIG. 5, in step S1, it is determined whether or not a passer has entered the gate. This determination is made based on detection signals from the various sensors 20 as described above. For example, it is performed by reading a passer's ID card or using an optical sensor. Here, if there is no passer's gate entry, there is no video shooting as shown in step S2. If it is determined that there is a passer's gate, the video device 16 with the video data storage function operates, and video shooting starts in step S3. At the same time, recording and storage of these videos on the video temporary storage disk 17 is started.

  If it is determined in step S4 that the passer's gate has left the gate, it is determined in step S5 whether or not a gate abnormality has occurred. If there is no abnormality between the passer's gate entering and leaving the room, video shooting is stopped in step S6. become. At the same time, recording and storage on the video temporary storage disk 17 is stopped. If it is determined that a gate abnormality has occurred, the process proceeds to the next step S7.

  If it is determined in step S5 that there is a gate abnormality, the video recorded in the video temporary storage disk 17 is copied and stored in the video main storage disk 18 by the video copy start in step S7 as shown in FIG. Be started. If it is determined in step S8 whether or not the gate abnormality has been recovered and the gate abnormality disappears and is recovered, the video copy is stopped in step S9, and the video recorded and stored in the video temporary storage disk 17 is copied and stored in the video main storage disk 18. Stops. Here, if there is no restoration of the gate abnormality in step S8, the video recorded and stored in the video temporary storage disk 17 in step S10 is all copied and stored in the video main storage disk 18. A partial processing loop in the occurrence of such an abnormality is performed each time a passer-by enters or exits the gate.

  The above-described shooting, video recording, operation when an abnormality occurs, etc. are all performed automatically.

  As described above, every time a passer's gate enters or exits the video, the video is recorded and recorded on the video temporary storage disk 17, and the video of the passer's gate entry / exit where an abnormality has occurred is stored on the video book storage disk 18. A copy is saved. Processing of such video storage data will be described with reference to FIG. FIG. 7 is a schematic diagram for explaining a processing method of video storage data.

  Here, one video is shot and stored in the video temporary storage disk 17 corresponding to each passerby, and all of them are serial numbered and managed. In this way, by assigning a serial number to management, even if a gate abnormality occurs at a plurality of gates 34 at exactly the same time, it becomes possible to manage without mistake. A passer's pass time, passer's ID, and video at the time of pass are given to this serial number. When the capacity of the temporary storage disk 17 is full, the video stored in the video temporary storage disk 17 is overwritten sequentially from the oldest data.

  On the other hand, when a gate abnormality occurs, a gate abnormality analysis result is further added to the data of the corresponding serial number and stored in the video book storage disk 18. Then, as shown in FIG. 7, the video between the traffic (n−m) and traffic (n + m) before and after the abnormality n is copied and stored in the video book storage disk 18. Here, in response to a request from the host computer 32 of the centralized management apparatus 11, the data at the time of occurrence of the abnormality and the data before and after the abnormality stored in the video book storage disk 18 are extracted by searching.

  Designation of m video corresponding to traffic (n−m) or traffic (n + m) recorded before and after the occurrence of abnormality n at the time of traffic n shown in FIG. 7 is made from the initial setting screen of the host computer 32. . However, m is zero or a positive integer. Note that the video record stored in the video book storage disk 18 is overwritten in sequence on the oldest data when the capacity of the video book storage disk 18 is exceeded. In this case, the video record stored in the video book storage disk 18 is transmitted and stored in the memory part of the abnormal event of the central management device 11 as described above.

  As described above, in the present embodiment, video data is not managed at the time of occurrence, but is managed by the serial number, so that there is no risk of loss of video data even when an abnormality occurs at the same time.

  Next, an operation procedure for determining an abnormal event in the access management system of this embodiment will be described with reference to FIG. FIG. 8 is a flowchart of a partial processing loop. Here, it is determined whether the occurrence of an abnormality is an abnormality caused by an illegal act by the original passerby, a natural phenomenon (such as wind pressure), or a device failure.

  As shown in FIG. 8, when a gate abnormality occurs in step S5, image processing is started by the image processing unit 24 of the access control gate 13 in step S11. Then, in step S12, it is confirmed whether or not an object exists before and after the occurrence of an abnormality with the various sensors 20 described above, for example, sensors such as an optical sensor, a load cell, and a pressure switch. If the object does not exist, in step S13, information such as a natural phenomenon such as wind or a device failure is transmitted to the host computer 32 as a cause analysis result.

  On the other hand, if there is an object, in step S14, it is determined whether or not a passerby exists at the time of occurrence of the abnormality by performing image processing. Here, if there is a passerby, it is determined in step S15 that an abnormality has occurred due to the act of the passer. If no passerby exists, it is determined in step S16 that the object has been left unattended and an equipment failure (object determination sensor), and the determination result is transmitted to the host computer 32.

  Such operations are all automatically performed in the same manner as the above-described shooting, video recording, and operation when an abnormality occurs. The above operation procedure makes it very easy to monitor and analyze the cause when an abnormality occurs.

  Next, an example of the monitoring operation device 12 that is operated by a supervisor using the access control system 10 having the above-described configuration and operation will be described with reference to FIG. FIG. 9 is a block diagram illustrating a schematic configuration of the monitoring operation device 12.

  In addition to the display PC 29 and the video monitor 31 shown in FIG. 3, the monitoring operation device 12 has integrated functions such as a real-time video, a recorded video, an error message, and an operation switch. The monitoring operation device 12 specifically has the following functions.

(1) Monitoring display function In the alarm / touch area 35, the abnormality that has occurred is displayed in time series. The generated abnormality can be scrolled up and down by an alarm display scroll 36. Here, when an arbitrary error message (for example, “L04 door failure 2005.01.18”) is touched or clicked with a mouse or the like, the corresponding recorded video is displayed in the video display area 37 for (m + 1) traffic when the error occurred The If you want to see it again, repeat the same operation. If you want to see other abnormal images, touch another message or click with a mouse or the like, and the corresponding image will be displayed with priority from later. In the video display area 37, any real-time camera video / recorded video can be arbitrarily selected by the selection switch 38.
Here, when the confirmation reset 39 is touched or clicked with a mouse or the like, the selected abnormal message can be deleted.

(2) Control function When the video display area 37 is touched or clicked with a mouse or the like, the gate control touch switch 40 is popped up. Here, a door door open / close touch switch is displayed, and the door can be opened and closed by touching or clicking with a mouse or the like.

(3) Abnormal content analysis function For the abnormalities selected in the alarm / touch area 35, the abnormalities analyzed in the message area 41 are displayed by touching or clicking with the mouse or the like on the analyzed abnormalities from the sensor status and video processing results. To do. The display can be scrolled up and down with a scroll key in the message area 41.

(4) Passer Tracking Function For the abnormal event selected in the alarm / touch area 35, from the pass history data of the passer who has passed abnormally, touch the passer's pass history in the message area 41 or Click to display with mouse. The display can be scrolled up and down with a scroll key in the message area 41. According to these means, it is possible to monitor and analyze the cause of the abnormality when the gate is passed, and it is possible to perform the operation easily and quickly while viewing the image.

  The entrance / exit management system of this embodiment monitors the occurrence of abnormal events in the entrance / exit management gate as well as the management of passers-by permission. When an abnormal event occurs, a recorded video in an arbitrary time zone before and after the abnormal event occurs is quickly taken out. For this reason, when the monitor overlooks the video when an abnormality occurs, or when it is desired to view a detailed video again, it is possible to immediately determine how to deal with the occurrence of the abnormal event.

  Further, in this access management system, it becomes easy to suppress an increase in the recording medium capacity of the video to be captured at the access management gate, and the video can be continuously captured, and means such as time-lapse photography are not required. . Further, it is not necessary to periodically replace a video recording medium such as a video tape or a DVD.

  Furthermore, it is possible to quickly determine whether the occurrence of an abnormal event is abnormal due to an illegal action by an original passerby, or due to other natural phenomenon or equipment failure. And it becomes possible to make an appropriate coping judgment for the occurrence of an abnormal event.

  Although the preferred embodiments of the present invention have been described above, the above-described embodiments do not limit the present invention. Those skilled in the art can make various modifications and changes in specific embodiments without departing from the technical idea and technical scope of the present invention.

  For example, the gate abnormality determination for determining the gate abnormality level and whether or not an abnormality has occurred differs from the present embodiment in which each gate-side terminal processing device 10b performs a plurality of gates in the central processing control device 10a on the monitoring room side. However, the configuration may be such that it can be performed collectively. Various sensors used for detecting an abnormal event may be other than those described in the present embodiment. These various sensors are arbitrarily selected so as to meet the management purpose of the facility, building, or each gate where the access control system is installed.

1 is a schematic block diagram showing an access management system comprising a central processing control device and a terminal processing device according to an embodiment of the present invention. The block diagram which shows schematic structure of a terminal processing apparatus. The schematic block diagram which shows transmission / reception of the gate abnormal signal and video signal between a terminal processing apparatus and a central processing control apparatus. The schematic diagram which shows transmission / reception of the gate abnormal signal and video signal between the terminal processing apparatus and central processing control apparatus which consist of several entrance / exit management gates. The flowchart of the partial process loop which shows the operation | movement procedure of the video recording in an entrance / exit management gate. The flowchart of the partial process loop which shows the operation | movement procedure at the time of abnormality generation | occurrence | production in an entrance / exit management gate. The schematic diagram for demonstrating the processing method of the image | video preservation | save in an entrance / exit management gate. The flowchart of the partial process loop which shows the operation | movement procedure of discrimination | determination of an abnormal event. The block diagram which shows schematic structure of the monitoring operation apparatus which comprises a central processing control apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Entrance / exit management system, 10a ... Central processing control apparatus, 10b ... Terminal processing apparatus, 11 ... Centralized management apparatus, 12 ... Monitoring operation apparatus, 13 ... Entrance / exit management gate, 14 ... Gate control controller, 15 ... Cable, 16 ... Image | video Device: 17 ... Video temporary storage disk, 18 ... Video main storage disk, 19 ... Passer detection processing unit, 20 ... Various sensors, 21 ... Video storage request processing unit, 22 ... Gate abnormality determination processing unit, 23 ... I / O processing , 24 ... Image processing section, 25 ... Video transmission section, 26 ... Video / data reception processing section, 27 ... Video / data storage disk, 28 ... Signal transmission section, 29 ... Display PC, 30 ... Video display processing section, 31 ... Video monitor, 32 ... Host computer, 33 ... Communication network, 34 ... Gate, 35 ... Alarm / touch area, 36 ... Alarm display scroll, 37 Image display area, 38 ... selection switch, 39 ... check reset, 40 ... gate control touch switch, 41 ... message area.

Claims (9)

In an access control system equipped with an access control gate through which passers-by passes and a centralized management device for centrally managing the access control gate,
Detecting means for detecting the entrance / exit of the access control gate by the passerby and outputting a detection signal;
Video capturing means for monitoring and capturing the entrance / exit management gate until the passer- by enters the entrance / exit management gate based on the detection signal from the detection means and obtains first video data; and
A first image storing means to store the first image data acquired by the image photographing means,
Gate abnormality determination processing means for detecting an abnormal event occurring at the access control gate based on the detection signal from the detection means, and outputting a gate abnormal signal representing the occurrence of the abnormal event ;
Of the first video data stored in the first video storage unit, the image is captured within a predetermined time before and after the occurrence of the abnormal event represented by the gate abnormality signal from the gate abnormality determination processing unit. Second video storage means for storing the acquired second video data;
Comprising
An access control system characterized by managing passage of the passerby through the access control gate and monitoring an abnormal event occurring at the access control gate. The said detection means includes at least one of an ID card reader, a gate door open / close sensor, an optical sensor, a weight sensor, a pressure sensor, a temperature sensor, a gas sensor, and a vibration sensor. Access control system. The gate abnormality determination processing means compares the value of the detection signal from the detection means with a reference value, and if the comparison result indicates the occurrence of an abnormal event , the gate abnormality signal is sent to the centralized management device. Send
The centralized management device acquires the second video data stored in the second video storage unit based on the gate abnormality signal ;
The entrance / exit management system according to claim 1 or 2. The access control gate is installed in a plurality of required areas of a facility or building, and the central control device concentrates abnormal events occurring at the plurality of access control gates via the central control device installed in a monitoring room. The access control system according to any one of claims 1 to 3, wherein monitoring is performed. The first video data to be stored prior Symbol first image storage means, any of claims 1 to 4, characterized in sequentially the serial number is assigned to correspond to the passerby The entry / exit management system according to one item. Before SL has been the first video data stored in the first image storing means, access control system according to claim 5, characterized in that it is sequentially overwritten or deleted. Based on the abnormal event detected by the gate abnormality determination processing unit and the second video data stored in the second video storage unit, the abnormal event is determined to be an act of a passerby, a natural phenomenon or a mechanical failure. by access control system according to any one of claims 1 to 6, characterized in Rukoto. Access control system according to any one of claims 1 to 7 wherein the monitoring personnel to the monitoring room, characterized in that the monitoring operation device is installed to control collectively access control system. In the entrance and exit management method to manage the passage of passers-by entrance and exit gates,
Detecting the entrance and exit of the access control gate by the passerby and outputting a detection signal;
Based on the detection signal, the passerby enters and exits the access control gate and then exits and monitors the access control gate to obtain first video data,
Storing the first video data in a first video storage means;
Detecting an abnormal event occurring at the access control gate based on the detection signal, and outputting a gate abnormal signal indicating the occurrence of the abnormal event,
Of the first video data stored in the first video storage means, second video data acquired within a predetermined time before and after the occurrence of the abnormal event represented by the gate abnormal signal is stored in the second video data. To the video storage means
Sequentially erasing the first video data stored in the first video storage means from the oldest one;
Input management method out it said.

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