Control device, control method and program for access control system

Abstract

Provided are an entry / exit management device, an entry / exit management system, an entry / exit management method and program, and a control device capable of configuring the entry / exit management system, which are capable of issuing a warning against unauthorized intrusion into a controlled area with a simple configuration. [Solution] The control device 100 comprises an acquisition unit 151 that acquires the tag ID of an RF tag read by a tag reader installed at the entrance / exit of the controlled area, a camera control unit 152 that causes a camera installed within the controlled area to photograph the controlled area after the tag ID has been acquired by the tag reader, and a transfer unit 153 that transfers the tag ID acquired by the camera control unit 152 and image data of the controlled area that the camera control unit 152 has photographed to the entry / exit management server.

Description

[Technical Field]

[0001] The present invention provides Access control system control device, control This invention relates to a method and a program. [Background technology]

[0002] Access control systems are used to regulate the entry and exit of people in buildings and rooms that require strict management, such as data centers, offices, and control and command rooms. Conventional access control systems may not be able to detect unauthorized entry by someone other than an authorized person when the door is opened and closed, and methods have been developed to solve this problem. For example, Patent Document 1 discloses a security system that counts the number of portable radios within a security zone using a communication antenna, counts the number of monitored objects from images of the security zone taken by a camera, and outputs an alarm signal if the number of monitored objects is greater than the number of portable radios. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-292942 Summary of the Invention [Problem to be solved by the invention]

[0004] In the security system of Patent Document 1, when a monitored object is detected, an image of the entire area within the security zone is taken and the number of portable radios within the security zone is counted. This necessitates the installation of at least three components: a communication antenna, a camera, and an object detection means, which results in a problem of a complex system configuration.

[0005] The present invention has been made based on this background, and provides a system that can issue a warning against unauthorized intrusion into a controlled area with a simple configuration. Nai Exit management system of Control device , control method and program The purpose is to provide the following. [Means for solving the problem]

[0006] In order to achieve the above object, a control device according to the present invention comprises: Installed at the entrance and exit of the controlled area and a communication device connected to an unlocking device that unlocks a door provided at the entrance. an acquisition unit that acquires the identification information read by the authentication device; a camera control unit that causes a camera installed in the controlled area to capture an image of the controlled area after the identification information is read by the authentication device; a transfer unit that transfers the identification information acquired by the acquisition unit and image data of the controlled area that the camera control unit has caused the camera to take, to an entry / exit management server; ,of Preparation 、 When the identification information read by the authentication device is authenticated, the camera control unit causes the camera to take an image of the inside of the controlled area after the unlocking of the door by the unlocking device, which unlocks the door for a certain period of time, has finished and the certain period has elapsed since the door was locked. do. [Effects of the Invention]

[0007] According to the present invention, it is possible to issue a warning against unauthorized intrusion into a controlled area with a simple configuration. Nai Exit management system of Control device , control method and program can provide. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing the configuration of an access control system according to an embodiment of the present invention; [Figure 2] 1 is a diagram showing the arrangement of tag readers and cameras in an access control system according to an embodiment of the present invention; [Figure 3] 1 is a block diagram showing a hardware configuration of a control device according to an embodiment of the present invention; [Figure 4] FIG. 10(a) is a diagram showing an example of a data table in an entry / exit history storage unit, and FIG. 10(b) is a diagram showing an example of a data table in an image data storage unit. [Figure 5]2 is a block diagram showing a hardware configuration of an entry / exit management server according to an embodiment of the present invention; FIG. [Figure 6] 4 is a flowchart showing the flow of an entry / exit management process executed by the control device according to the embodiment of the present invention. [Figure 7] 10 is a flowchart showing the flow of an entry / exit management process executed by the entry / exit management server according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a control device, an access control device, an access control system, an access control method, and a program according to embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, the same or equivalent parts are designated by the same reference numerals.

[0010] An access control system according to an embodiment is a system that controls people entering and leaving a controlled area by detecting unauthorized entry by someone other than an authorized person based on the tag reader's reading history and images captured of the controlled area and issuing an alarm. Unauthorized entry refers to someone other than an authorized person entering the controlled area, and includes, for example, simultaneous entry by an authorized person and another person. A controlled area is an area where people's entry and exit is restricted, and is separated by structures such as buildings or rooms. A tag reader is used, for example, to unlock doors installed at the entrances and exits of the controlled area. In the embodiment, an example is described in which entry and exit from an office space to a control room, which is a controlled area, is controlled, and a lockable door is installed between the office space and the control room.

[0011] In an entry / exit management system according to an embodiment, an RF tag is individually assigned to each person permitted to enter. The RF tag is embedded in, for example, a mobile terminal or an IC card, and stores a tag ID (Identification), which is an example of information for identifying the RF tag. The tag ID is an example of identification information for identifying a person permitted to enter. RFID (Radio Frequency Identification) is used to read the tag ID using a tag reader. The RF tag is, for example, a passive tag that operates using electromagnetic waves from the tag reader as its energy source. The tag reader is an example of an authentication device that causes the entry / exit management server to authenticate whether the read tag ID is legitimate.

[0012] In an access control system according to an embodiment, when an authorized person touches an RF tag to a tag reader installed near the door when entering or leaving the room, the door between the work space and the control room is unlocked. When the tag ID of the RF tag is read by the tag reader, a camera captures an image of the entire area inside the control room a certain period of time after that. Then, based on both the tag ID read history and the captured image of the entire area inside the control room, the number of people in the control room at the time of entry and exit is counted, and if the counted number of people does not match, a warning is issued to the monitor.

[0013] As shown in Figures 1 and 2, entry and exit management system 1 includes tag readers 2A and 2B, an unlocking device 3, a camera 4, a monitoring device 5, a control device 100, and an entry and exit management server 200. Tag reader 2A is installed on the office space side (entrance side) of the door, and tag reader 2B is installed on the command room side (exit side) of the door. Unlocking device 3, camera 4, and control device 100 are installed in the command room, monitoring device 5 is installed in the office space, and entry and exit management server 200 is installed in a data center outside the command room.

[0014] The tag readers 2A and 2B are communicatively connected to the unlocking device 3 and the control device 100 via wired or wireless communication circuits, and the camera 4 is communicatively connected to the control device 100 via wired or wireless communication circuits. In addition, the entry / exit management server 200 is communicatively connected to the unlocking device 3, the monitoring device 5, and the control device 100 via a communication network.

[0015] Tag reader 2A is touched when an authorized person enters the room, and tag reader 2B is touched when an authorized person leaves the room. When tag readers 2A and 2B read the tag ID of an authorized person, they transmit the read tag ID in real time to unlocking device 3 and control device 100, respectively, along with the terminal ID stored in memory and the time the tag ID was read. Tag readers 2A and 2B transmit electromagnetic waves toward, for example, an RF tag, and upon receiving the electromagnetic waves transmitted from the RF tag, read the tag ID by decoding the tag ID carried on the electromagnetic waves.

[0016] When the unlocking device 3 receives the tag ID read by the tag readers 2A and 2B, it transmits the read tag ID to the entry / exit management server 200. The entry / exit management server 200 has a database that stores the tag IDs of persons permitted to enter the room, and compares the read tag ID with the tag IDs stored in the database. If it is confirmed to be a legitimate tag ID, it transmits a notification that the read tag ID has been authenticated. When the unlocking device 3 receives a notification from the entry / exit management server 200 that the read tag ID has been authenticated, it unlocks the door for a limited period of time and locks it again after the specified period has elapsed since the door was unlocked. This allows persons permitted to enter the room to temporarily unlock the door and enter / exit the room simply by touching their RF tag to the tag readers 2A and 2B. Note that in the embodiments, "unlocking" means unlocking a locked door and making it possible to open and close the door freely.

[0017] Camera 4 is a camera installed so as to be able to capture the entire area inside the command room. Camera 4 is preferably installed, for example, on the ceiling of the command room and is equipped with a wide-angle lens that can capture a wide range of images. Camera 4 captures the entire area inside the command room a certain time after tag readers 2A and 2B read the tag ID. Camera 4 may capture still images or videos. Camera 4 transmits the captured image data of the entire area inside the command room to control device 100 in real time.

[0018] The control device 100 is, for example, a general-purpose computer. When a tag ID is read by tag readers 2A and 2B, the control device 100 acquires the read tag ID and causes camera 4 to capture an image of the entire area inside the command room after a certain time has passed since tag readers 2A and 2B read the tag ID. Next, the control device 100 transmits the tag ID read by tag readers 2A and 2B and an image of the entire area inside the command room captured by camera 4 to the entry / exit management server 200. The control device 100 also accepts user operations related to the registration and deletion of permitted entry persons, and transmits instructions based on the operations to the entry / exit management server 200.

[0019] The entry / exit management server 200 is an example of an entry / exit management device, and is, for example, a general-purpose computer. The entry / exit management server 200 acquires tag IDs read by tag readers 2A and 2B and image data captured by camera 4, and stores the read tag IDs in a database that stores tag ID reading history (entry / exit history). The entry / exit management server 200 calculates the number of people in the command room based on the tag ID reading history and the images captured by camera 4, and issues a warning if the respective numbers of people do not match. The entry / exit management server 200 also receives instructions from the control device 100 regarding the registration and deletion of permitted entry persons, and updates the database in which the tag IDs of permitted entry persons are stored.

[0020] The monitoring device 5 is a computer that enables a supervisor checking for unauthorized intrusion to confirm whether or not unauthorized intrusion has occurred. When the monitoring device 5 receives a notification of a warning issued by the entry / exit management server 200, it notifies the supervisor by at least one of a warning screen and a sound. The above is the configuration of the entry / exit control system 1.

[0021] Next, the hardware configuration of the control device 100 according to the embodiment will be described with reference to FIG. The control device 100 includes an operation unit 110, a display unit 120, a communication unit 130, a storage unit 140, and a control unit 150. The units of the control device 100 are connected to each other via an internal bus (not shown).

[0022] The operation unit 110 receives an instruction from the user and supplies an operation signal corresponding to the received operation to the control unit 150.

[0023] The display unit 120 includes a display and a display drive circuit, and displays various images to the user based on data supplied from the control unit 150.

[0024] The communication unit 130 is a communication interface that enables the control device 100 to communicate with external devices. The communication unit 130 communicates with external devices via a communication network such as the Internet. The communication unit 130 also includes an input / output terminal and communicates with external devices via a communication cable. The input / output terminal is, for example, a USB (Universal Serial Bus).

[0025] The storage unit 140 includes, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, and a hard disk. The storage unit 140 stores programs executed by the control unit 150 and various data. The storage unit 140 also temporarily stores various information and functions as a work memory for the control unit 150 to execute processes. The storage unit 140 also includes an entry / exit history storage unit 141 and an image data storage unit 142.

[0026] 4(a), the entry / exit history storage unit 141 stores the tag IDs read by the tag readers 2A and 2B in association with the terminal IDs individually assigned to the tag readers 2A and 2B and the time at which the tag IDs were read. Because the read tag IDs are associated with the terminal IDs individually assigned to the tag readers 2A and 2B, it is possible to distinguish whether the tag IDs were read at the time of entry or exit.

[0027] As shown in FIG. 4(b), the image data storage unit 142 stores image data captured by the camera 4 in association with the time of capture by the camera 4.

[0028] Returning to FIG. 3, the control unit 150 includes a processor and controls each unit of the control device 100. The processor is, for example, a CPU (Central Processing Unit). The control unit 150 executes the entry / exit management process of FIG. 6 by executing a program stored in the storage unit 140. The control unit 150 also includes a real time clock (RTC) that measures time even when the control device 100 is powered off. Functionally, the control unit 150 includes an acquisition unit 151, a camera control unit 152, and a transfer unit 153.

[0029] When tag readers 2A, 2B read the tag ID of an RF tag, acquisition unit 151 acquires the read tag ID, the terminal ID individually assigned to tag readers 2A, 2B, and the time the tag ID was read, and stores the tag ID in entry / exit history storage unit 141 in Fig. 4(a) in association with the terminal ID and the time the tag ID was read. Note that acquisition of data by acquisition unit 151 also includes reading out data stored in storage unit 140.

[0030] When the tag ID is read by the acquisition unit 151, the camera control unit 152 causes the camera 4 to capture an image of the entire area inside the command room a fixed time after the door is unlocked. The timing for the camera 4 to capture an image is preferably set to the time when people have entered or exited after the door has been unlocked, for example, a fixed time (e.g., 10 seconds) after the unlocking device 3 unlocks the door and then locks it. The camera control unit 152 also acquires the image captured by the camera 4 and the time when the image was captured, and stores the image data in the image data storage unit 142 in FIG. 4(b) in association with the time when the image was captured.

[0031] The transfer unit 153 controls the communication unit 130 to transfer the tag ID acquired by the acquisition unit 151, the terminal ID of the tag reader 2A, 2B that read the tag ID, and the time the tag ID was read, as well as the image acquired by the camera control unit 152 and the time the image was taken, to the entry / exit management server 200. The configuration of the control device 100 has been described above.

[0032] Next, with reference to FIG. 5, the hardware configuration of the entry / exit management server 200 according to the embodiment will be described. The entry / exit management server 200 comprises an operation unit 210, a display unit 220, a communication unit 230, a storage unit 240, and a control unit 250. The units of the entry / exit management server 200 are interconnected via an internal bus (not shown), and have the same or equivalent configuration as the units of the control device 100. The following description will focus on the differences from the units of the control device 100.

[0033] The storage unit 240 includes an entry / exit history storage unit 241 and an image data storage unit 242. The entry / exit history storage unit 241 stores data that is the same as or equivalent to that stored in the entry / exit history storage unit 141, and the image data storage unit 242 stores data that is the same as or equivalent to that stored in the image data storage unit 142.

[0034] 7 by executing a program stored in the storage unit 240. The control unit 250 functionally includes an acquisition unit 251, a first counting unit 252, a second counting unit 253, and a warning generation unit 254.

[0035] The acquisition unit 251 acquires the tag ID, the terminal ID of the tag reader 2A, 2B that read the tag ID, and the time when the tag ID was read, and stores them in the entry / exit history storage unit 241. The acquisition unit 251 also acquires the image captured by the camera control unit 152 and the time when the image was captured, and stores them in the image data storage unit 242.

[0036] The first counting unit 252 counts the number of people in the command room at the time the tag ID is read, based on the tag ID history stored in the entry / exit history storage unit 241. Specifically, the first counting unit 252 checks the data string of the entry / exit history stored in the entry / exit history storage unit 241 from top to bottom, excludes pairs of the terminal ID of tag reader 2A and the terminal ID of tag reader 2B for the same tag ID, and counts the number of tag IDs for which only the terminal ID of tag reader 2A exists. For example, in the example of the data table in FIG. 4(a), tag ID "0001" is excluded from the count because it contains a pair of data strings with terminal IDs A and B. Tag ID "0002" is included in the count because it contains only a data string with terminal ID A.

[0037] The second counting unit 253 executes image recognition processing on the captured image triggered by tag readers 2A and 2B reading the tag ID, thereby recognizing people in the image and counting the number of people recognized in the image. A known method may be used for the image recognition processing. Since the image captured by camera 4 captures the entire area inside the command room, the number of people recognized in the image matches the actual number of people present in the command room at the time the image was captured.

[0038] The warning generation unit 254 compares the number of people in the room counted by the first counting unit 252 with the number of people in the room counted by the second counting unit 253, and determines whether they match. If they do not match, the warning generation unit 254 generates a warning to the monitoring device 5 monitored by the monitor that an unauthorized intrusion has occurred. The above is the configuration of the entry / exit management server 200.

[0039] (Entry / exit management processing) Next, with reference to FIG. 6, the flow of the entry / exit management process executed by the control device 100 according to the embodiment will be described. The entry / exit management process is a process in which the control device 100 and the entry / exit management server 200 cooperate to detect unauthorized entry by anyone other than an authorized person based on the reading history of tag readers 2A and 2B and images captured of the entire area within the command room, and issue a warning to manage the entry and exit of people into the command room. The entry / exit management process executed by the control device 100 starts when an authorized person touches an RF tag to one of tag readers 2A and 2B. Tag reader 2 is started before the entry / exit management process starts, and is in a state where it can read tag IDs.

[0040] When an authorized person touches an RF tag to one of tag readers 2A, 2B, which reads the tag ID, acquisition unit 151 acquires the tag ID read by one of tag readers 2A, 2B, the terminal ID of tag reader 2A, 2B that read the tag ID, and the read time of the tag ID read from the RTC, and stores the read tag ID in entry / exit history storage unit 141 of FIG. 4(a) in association with the terminal ID and the read time (step S11). The tag ID read by one of tag readers 2A, 2B is also transmitted to unlocking device 3, which requests entry / exit management server 200 to authenticate the tag ID. When the tag ID is authenticated by entry / exit management server 200, unlocking device 3 unlocks the door for a limited period of time.

[0041] Next, the camera control unit 152 causes the camera 4 to capture an image of the entire area inside the command room after a certain time has elapsed since the tag ID was read (step S12). After acquiring the image captured by the camera 4 and the capture time of the image read from the RTC, the camera control unit 152 associates the image with the capture time and stores the image in the image data storage unit 142 in FIG. 4(b).

[0042] Next, transfer unit 153 transfers the tag ID acquired in the process of step S11, the terminal ID of tag reader 2A, 2B that read the tag ID, the read time of the tag ID, and the image acquired in the process of step S12 and the photographing time of the image to entry / exit management server 200 (step S13), and ends the process. Note that the entry / exit management process is resumed when a new person permitted to enter touches an RF tag to one of tag readers 2A, 2B. The flow of the entry / exit management process executed by the control device 100 has been described above.

[0043] Next, the flow of the entry / exit management process executed by the entry / exit management server 200 according to the embodiment will be described with reference to Fig. 7. The entry / exit management process executed by the entry / exit management server 200 starts when the entry / exit management server 200 receives the tag ID and image data from the control device 100.

[0044] First, the acquisition unit 251 receives from the control device 100 the tag ID, the terminal ID of the tag reader 2A, 2B that read the tag ID, data regarding the time the tag ID was read, and data regarding the captured image and the time the image was captured, and stores these in the entry / exit history memory unit 241 and the image data memory unit 242, respectively (step S21).

[0045] Next, the first counting unit 252 executes a first counting process to count the number of people in the command room at the time the tag ID is read, based on the history of the tag ID stored in the entry / exit history storage unit 241 (step S22). The number of people based on the entry / exit history is an apparent number of people, and in the case of unauthorized entry, it does not necessarily match the actual number of people in the room.

[0046] Next, the second counting unit 253 executes image recognition processing on the captured image triggered by the tag readers 2A and 2B reading the tag ID, thereby recognizing people appearing in the image and counting the number of people recognized in the image (step S23). The number of people obtained by the image recognition processing is the actual number of people present in the room.

[0047] Next, the warning generation unit 254 compares the number of people in the room counted by the first counting unit 252 with the number of people in the room counted by the second counting unit 253, and determines whether they match (step S24). If they match (step S24; Yes), the process ends. On the other hand, if they do not match (step S24; No), the warning generation unit 254 issues a warning to the monitoring device 5 viewed by the monitor that there has been an unauthorized intrusion (step S25), and then the process ends. The entry and exit management process executed by the entry and exit management server 200 resumes when the tag ID and image data are received again from the control device 100. The flow of the entry / exit management process executed by the entry / exit management server 200 has been described above.

[0048] As described above, the control device 100 according to the embodiment includes an acquisition unit 151 that acquires the tag ID of an RF tag read by tag readers 2A and 2B installed at the entrances and exits to the command room, a camera control unit 152 that causes cameras 4 installed in the command room to capture images of the inside of the command room when the tag ID is read by acquisition unit 151, and a transfer unit 153 that transfers the tag ID acquired by camera control unit 152 and image data of the inside of the command room that camera control unit 152 has caused camera 4 to capture to entry and exit management server 200. This makes it possible to count the apparent number of people present in the room based on the entry and exit history using tag IDs and the actual number of people present in the room based on the captured images of the inside of the command room, thereby enabling the configuration of an entry and exit management system that has a simple configuration and is capable of issuing a warning against unauthorized entry into a controlled area.

[0049] The present invention is not limited to the above-described embodiment, and the following modifications are possible.

[0050] (Variation) In the above embodiment, touch-type tag readers are used as tag readers 2A and 2B, but the present invention is not limited to this. For example, gate-type readers may be used as tag readers 2A and 2B. Also, in the above embodiment, passive tags are used as RF tags, but the present invention is not limited to this. Semi-active tags or active tags may also be used as RF tags.

[0051] In the above embodiment, the tag readers 2A and 2B decode the tag ID carried on the electromagnetic waves transmitted from the RF tag, but the present invention is not limited to this. For example, the tag readers 2A and 2B may convert the electromagnetic waves transmitted from the RF tag into electrical signals, and the control unit 150 of the control device 100 may decode the tag ID from the electrical signals received from the tag readers 2A and 2B.

[0052] In the above embodiment, tag readers 2A and 2B are used to unlock the door, but the present invention is not limited to this. The door may be unlocked using means other than tag readers 2A and 2B, such as a physical key or face recognition using a camera. In this case, since the person permitted to enter the room must remember to touch the RF tag to tag readers 2A and 2B, it is advisable to notify the person by visual or audio messages urging them to touch tag readers 2A and 2B.

[0053] In the above embodiment, tag readers 2A and 2B that read the tag ID of an RF tag are used as authentication devices. However, the present invention is not limited to this. For example, the authentication device may be a camera capable of reading a two-dimensional code representing identification information assigned to an authorized person, or an antenna that receives identification information transmitted from a mobile device carried by the authorized person. Alternatively, face or iris authentication may be performed using an additional camera, voiceprint authentication using a microphone, or finger vein authentication using a near-infrared sensor. If the authorized person is determined to be a legitimate authorized person through these authentication methods, the control device 100 may acquire the identification information assigned to the authorized person. In face and iris authentication, the facial area detected from the image may be compared with images of the worker's face and iris pre-stored in the storage unit 140.

[0054] In relation to the above modification, multiple authentication devices may be used in combination to improve security. For example, tag reader 2A may read a tag ID and an additional camera may perform face authentication in parallel, and if the face authentication determines that the person is a legitimate person permitted to enter the room, tag reader 2A may transmit the tag ID to unlocking device 3 to unlock the door. In this case, the additional camera may take a photograph, for example, triggered by tag reader 2A reading the tag ID.

[0055] In the above embodiment, camera 4 is installed in the command room, but the present invention is not limited to this. For example, an additional camera may be installed so that it can capture images of the faces of people entering and leaving the room when the tag ID is read by tag readers 2A and 2B. This additional camera may be installed, for example, near the door so that it captures images of the work space side. Image data captured by the additional camera may be transmitted to entry / exit management server 200 together with data such as the read tag ID.

[0056] In the above embodiment, the camera 4 starts capturing images when the tag ID is read by the tag readers 2A and 2B, but the present invention is not limited to this. For example, a video may be continuously captured using the camera 4, and a still image may be extracted from the video when the tag ID is read by the tag readers 2A and 2B. Furthermore, after the door is unlocked by reading the tag ID, the camera 4 may start capturing images when a moving object is detected in the command room. For example, a differential image may be used for detecting a moving object.

[0057] In the above embodiment, the unlocking device 3 locks the door after a certain period of time has elapsed since the door was unlocked, but the present invention is not limited to this. If the door itself has a function to lock the door after a certain period of time has elapsed since the door was unlocked, the function of locking the door by the unlocking device 3 may be omitted.

[0058] In the above embodiment, there is one camera 4, but the present invention is not limited to this. For example, a plurality of cameras 4 may be installed in different positions and orientations so as to prevent blind spots from occurring in the command room.

[0059] In the above embodiment, when the monitoring device 5 receives a warning notification from the entry / exit management server 200, it notifies the monitor by at least one of a warning screen and a sound, but the present invention is not limited to this. For example, when the entry / exit management server 200 issues a warning, the warning notification may be sent to the monitoring device 5 by email or Webhook.

[0060] In the above embodiment, when the number of occupants does not match, the entry / exit management server 200 issues a warning and notifies the monitoring device 5 in real time, but the present invention is not limited to this. For example, the entry / exit management server 200 may store a history of warnings (warning history) in the storage unit 140, and generate a report including the warning history at a regular interval or in response to a request from the monitoring device 5, and transmit the report to the monitoring device 5. The report may be generated weekly or monthly, for example.

[0061] In the above embodiment, the control device 100 and the entry / exit management server 200, which are installed in different locations, cooperate to execute the entry / exit management process, but the present invention is not limited to this. For example, the entry / exit management server 200 may be configured to be provided with the functions of the control device 100, so that the entry / exit management server 200 executes the series of entry / exit management processes independently. This eliminates the need to transfer tag IDs and image data between the control device 100 and the entry / exit management server 200.

[0062] In the above embodiment, the control device 100 and the entry / exit management server 200 store various data in the storage units 140 and 240, respectively, but the present invention is not limited to this. For example, all or part of the various data may be stored in an external computer via a communication network.

[0063] In the above embodiment, the control device 100 and the entry / exit management server 200 operate based on the programs stored in the storage units 140 and 240, respectively, but the present invention is not limited to this. For example, the functional configuration realized by the programs may be realized by hardware.

[0064] In the above embodiment, the control device 100 and the entry / exit management server 200 are, for example, general-purpose computers, but the present invention is not limited to this. For example, the control device 100 and the entry / exit management server 200 may be realized by a processing unit provided on a cloud.

[0065] In the above embodiment, the processing performed by the control device 100 and the entry / exit management server 200 was realized by a device having the above-mentioned physical configuration executing a program stored in the memory units 140, 240, but the present invention may also be realized as a program or as a storage medium on which the program is recorded.

[0066] In addition, a program for executing the above-mentioned processing operations may be stored and distributed on a non-transitory recording medium readable by a processing unit, such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), or an MO (Magneto-Optical Disk), and the program may be installed in a processing unit to configure an apparatus that executes the above-mentioned processing operations.

[0067] The above embodiments are merely examples, and the present invention is not limited to these. Various embodiments are possible within the scope of the invention as defined in the claims. The components described in the embodiments and variations can be freely combined. Furthermore, inventions equivalent to the inventions defined in the claims are also included in the present invention. In addition, even if the components of the inventions defined in the claims have the same names as the components described in the above embodiments, they are not limited to the components described in the above embodiments themselves, and can be modified and applied as appropriate. [Explanation of symbols]

[0068] 1. Access control system 2A, 2B tag reader 3 Unlocking device 4. Camera 5 Monitoring device 100 control device 140 Storage section 150 control section 151 Acquisition Department 152 Camera control unit 153 Transfer Department 200 Access control server 251 Acquisition Department 252 First Counting Unit 253 Second Counting Section 254 Warning generation section

Claims

1. an acquisition unit that is provided at an entrance to the controlled area and acquires identification information read by an authentication device that is communicably connected to an unlocking device that unlocks a door provided at the entrance; a camera control unit that causes a camera installed in the controlled area to capture an image of the controlled area after the identification information is read by the authentication device; a transfer unit that transfers the identification information acquired by the acquisition unit and image data of the controlled area that the camera control unit has caused the camera to capture to an entry / exit management server, When the identification information read by the authentication device is authenticated, the camera control unit causes the camera to capture an image of the controlled area after the unlocking device has finished unlocking the door for a certain period of time and the certain period has elapsed since the door was locked. Control device.

2. A control method executed by a control device, an acquisition step of acquiring identification information read by an authentication device provided at an entrance / exit of the controlled area and communicably connected to an unlocking device that unlocks a door provided at the entrance / exit; a camera control step of causing a camera installed in the controlled area to photograph the inside of the controlled area after the identification information is read by the authentication device; a transfer step of transferring the identification information acquired in the acquisition step and image data of the controlled area photographed by the camera in the camera control step to an entry / exit management server, In the camera control step, when the identification information read by the authentication device is authenticated, the unlocking device that unlocks the door for a certain period of time ends, and after a certain period of time has elapsed since the door was locked, the camera is caused to take an image of the inside of the controlled area. Control method.

3. A computer, an acquisition means for acquiring identification information read by an authentication device provided at an entrance to the controlled area and communicably connected to an unlocking device that unlocks a door provided at the entrance; a camera control means for causing a camera installed within the controlled area to photograph the inside of the controlled area after the identification information has been read by the authentication device; a transfer means for transferring the identification information acquired by the acquisition means and image data of the controlled area captured by the camera controlled by the camera control means to an entry / exit management server; A program for functioning as When the identification information read by the authentication device is authenticated, the camera control means causes the camera to take an image of the inside of the controlled area after the unlocking device has finished unlocking the door for a certain period of time and the certain period has elapsed since the door was locked. program.

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