KR101580200B1 - Access control apparatus for automatic security restoration and method thereof - Google Patents

Access control apparatus for automatic security restoration and method thereof Download PDF

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Publication number
KR101580200B1
KR101580200B1 KR1020150072122A KR20150072122A KR101580200B1 KR 101580200 B1 KR101580200 B1 KR 101580200B1 KR 1020150072122 A KR1020150072122 A KR 1020150072122A KR 20150072122 A KR20150072122 A KR 20150072122A KR 101580200 B1 KR101580200 B1 KR 101580200B1
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South Korea
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time
expense
security
person
area
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KR1020150072122A
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Korean (ko)
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노인기
오승열
김상진
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주식회사 에이디티캡스
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
    • G07C9/00007—

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  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

The present invention sets different access rights by access persons who access a security area controlled by an access control system and may automatically recover a security state of the security area in case that an automatic recovery time passes after the security is released according to the access rights set for the access persons, thereby automatically recovering the security state for the security area after a set time passes even if the access persons get out of the security area without a security recovery manipulation for the security area to prevent a security vacuum.

Description

TECHNICAL FIELD [0001] The present invention relates to an access control apparatus and method capable of automatic expense recovery,

The present invention relates to an access control system, and more particularly, to an access control system that sets different access rights according to an accessing person entering and leaving a security area controlled by an access control system, The security status of the security zone can be automatically recovered so that the security status of the security zone is automatically recovered after a certain period of time even if the passenger leaves the security zone without the security guard operation for the security zone, And to provide an access control device and method capable of automatic expense recovery.

In general, the access control system is installed to control unauthorized persons in an office space such as an apartment, a residential space such as an apartment or a house, an office, a bill, and the like, and is used for a security area such as a residential space or an office space Which is a system that provides security services to the users.

This access control system can provide a variety of security guard services by using data collected through a camera installed in a security area including a door control, an intrusion detection sensor, and the like.

On the other hand, in the security zone controlled by the access control system, there may be a passenger who is allowed to access temporarily in order to carry out cleaning or maintenance work in the security zone, in addition to the passenger who has the right to access the security zone .

In case that the passengers who are permitted to enter and leave the security area for temporary access to the security area, the security area in the security area is released and the security status of the security area is reset Recover and leave the guard area.

However, in the past, there has been a problem that when a passenger who is allowed to enter and exit temporarily leaves the game area without restoring the security state in the security area, security holes sometimes occur in the security area.

In this case, in case that the temporary access is permitted, in many cases, the passenger who has the authorized access right in the security zone does not exist in the dawn or the middle of the night and performs the work. In such a case, There was a high risk of security problems such as unauthorized intrusion into the security area.

(Patent Literature)

Korean Registered Patent No. 10-1265028 (registered on May 09, 2013)

Therefore, according to the present invention, different access rights are set for each accessing person in the security area controlled by the access control system, and when the preset automatic restoring time elapses after expiration according to the access right set in the accessing person, By automatically restoring the expense status, even if a person leaves the expense area without the expense recovery operation for the expense area, the expense status for the expense area is automatically restored after a certain time, And to provide an access control device and method capable of recovering expenses.

The present invention relates to an access control device capable of automatic expense recovery, and more particularly, it relates to an access control device capable of automatic expense restoration, in which, when there is a release operation of an expense state set in a specific expense area, A counting unit for counting an automatic restoration time set for automatically recovering the expense state from the expiration of the expense state with respect to the expense area in case of time-out access; And an automatic recovery mode when the time limit access is confirmed by the authentication unit to release the expense state for the security zone, and when the automatic recovery time has elapsed, And a control unit for restoring the expense state for the expense area.

In addition, the control unit may check whether a person is present in the security zone through the intrusion detection unit when the automatic recovery time elapses, and automatically restore the security status when there is no person.

In addition, the control unit repeatedly alerts the user that the automatic recovery time has elapsed for a preset warning time if a person is present in the security zone even after the automatic recovery time elapses.

The control unit informs the central control center on the communication network of the presence of a person in the security area when a person is present in the security area even after the warning time has elapsed.

The control unit informs the central control center on the communication network of the release of the expense state according to the automatic restoration expense mode upon switching to the automatic restoration expense mode.

When the time-out access is authenticated, the control unit checks whether the input time of the release operation is within a pre-registered time range allowed for the time-out access, and is performed within the time range It is determined that the releasing operation is abnormal and the expense state is maintained.

The authentication unit may check the authentication information if there is an operation to release the expense state to check whether it is the authentication information registered in the time-out access, and if the authentication information is the registered authentication information, .

The authentication information is input as biometric information of a person who performs the release operation or as digital information stored in an expiration revocation card issued to enable the release operation.

According to another aspect of the present invention, there is provided an automatic cost recovery method in an access control apparatus, comprising: receiving authentication information input for a release operation of an expense state set in a specific expense area; The method of claim 1, further comprising the steps of: if the time-out access is authorized, switching to an automatic restoration mode to release the expense state for the expense area; Counting an automatic restoration time set to be automatically restored; and automatically restoring the expense state for the expired area when the automatic restoration time elapses.

The repairing step may include: checking whether a person is present in the security zone when the automatic recovery time has elapsed; and if the person is not present in the security zone, And restoring the security state when a person is present in the security zone even after the automatic recovery time has elapsed.

The method of claim 1, further comprising the steps of: repeatedly alerting the user that the automatic recovery time has elapsed during a predetermined warning time if a person is present in the security zone even after the automatic recovery time has elapsed; The presence of a person in the security zone is notified to the central control center on the communication network.

The method may further include notifying the central control center on the communication network of information on the release of the expense state in accordance with the automatic restoration expense mode upon switching to the automatic restoration expense mode.

Checking whether or not the time at which the release operation is entered is within a pre-registered time range permitted for the time-out access, when authenticating the time-out access; The method further comprises the step of determining that the releasing operation is abnormal and maintaining the expense state.

According to the present invention, a different access right is set for each accessing person entering and exiting the security area controlled by the access control system, and when the preset automatic restoring time elapses after expiration of the expense according to the access right set for the accessing person, By allowing the security status to be recovered automatically, even if the passenger leaves the security zone without the expense recovery operation for the security zone, it is possible to automatically recover the security status for the security zone after a certain time, .

In addition, the security facility can be operated effectively by systematic access authority management, and management efficiency can be enhanced through manager monitoring function for worship release and automatic recovery.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a network configuration diagram of an access control system having an automatic cost recovery function according to an embodiment of the present invention; FIG.
FIG. 2 is a detailed block diagram of an access control apparatus having an automatic expense recovery function according to an embodiment of the present invention; FIG.
FIG. 3 is a flow chart of operation control for automatic expense recovery in the access control apparatus according to the embodiment of the present invention. FIG.

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

1 illustrates a network configuration of an access control system having an automatic cost recovery function according to an embodiment of the present invention.

First, a person who enters or exits a specific security area such as a home, an office, or a store where entrance and exit is controlled by an access control device can be referred to as a person who performs tasks such as housework or work. The accessing party can generally register authentication information for authenticating that the access control apparatus 100 is a person who can normally enter and leave the entrance control apparatus 100. The access control apparatus 100 may be provided with access control apparatus 100, It is possible to cancel the expense state for the security area controlled by the access control device 100 and to recover the security state for the security area controlled by the access control device 100 when the security area is deviated from the security area, .

At this time, when the user accesses through the access control device, the user can transmit the biometric information such as the fingerprint or the irregularity as the authentication information to the authentication information, or the authentication information that has been issued in advance can be used as the authentication information But the present invention is not limited thereto.

In addition, such a passenger can be a first passenger having a formal access right for the security area. For example, if the security zone controlled by the access control device 100 is a residential area of a person, If the security area is an office space such as an office, a shop, etc., it may be an employee belonging to the office or store, but is not limited thereto.

Also, according to the embodiment of the present invention, such a passenger can be a second passenger who is permitted to enter the time limit for a predetermined time only within a predetermined time range in the security zone controlled by the access control apparatus 100 . At this time, the second passenger may be a helper, for example, to enter the residential space and assist the housework. In the case of the office space, the second passenger may be a person who performs cleaning or security work, but the present invention is not limited thereto. That is, for example, it may be any kind of person temporarily allowed to enter the security zone other than the person corresponding to the first person having the authorized access to the security zone.

The access control device 100 is installed in a security area such as a home, an office or a shop where access control is required for reasons of security or the like, and is a device for controlling the access of unauthorized persons, But the present invention is not limited thereto.

When the access control apparatus 100 registers the authentication information for the first accessor having the authorized access right in advance and receives the unlock request for the access control apparatus 100 from the first accessor, The authentication information is received and compared with previously registered authentication information to confirm that the first person is a first person with a formal access right, and if it is confirmed that the first person has a formal access right, And releases the expense state to allow the user to enter and exit the security area.

In this case, the termination of the expense state includes releasing the locking device of the door controlled by the access control device 100, and temporarily stopping the operation of the external intruder detection sensor or the like which can be installed in the security area But is not limited to.

In addition, the access control apparatus 100 recovers the expense state for the security area when the first accessor having the authorized access right moves out of the security area and manipulates the security state recovery, thereby allowing the unauthorized access to the security area Can be prevented. Here, such restoration of the expense state refers to an operation of detecting an intruder, such as an intruder detection sensor, which can be installed in a security area, including locking a lock device of a door controlled by the access control device 100, And re-activating the operation, but the present invention is not limited thereto.

In addition, the access control apparatus 100 checks the authentication information when requesting to release the expense state by the second user who is granted time-limited access temporarily to the security area. If the access control apparatus 100 authenticates with the authentication information of the second user, It is possible to release the expense state temporarily so that the second person can perform the predetermined task.

Meanwhile, in the access control apparatus 100, the second person who has completed the work in the state where the security state is released by the second person who has been allowed to enter the time limit as described above, does not restore the security state, There has been a problem in that security clearance is generated because there is no way to automatically recover the security status when the user leaves the network.

Therefore, in the present invention, at the time of entering / exiting the second passenger who is permitted to enter the time limit for the passport area, it is monitored whether or not the preset automatic recovery time has elapsed since the second passenger released the passport status of the access control device 100 After the automatic recovery time elapses after the monitoring, the problem can be solved by automatically recovering the expense status for the security area. The automatic restoration of the expense state refers to an operation of detecting an intruder detection sensor or the like which can be installed in the security area, including locking the locking device of the door controlled by the access control device 100, And re-activating the operation, but the present invention is not limited thereto.

That is, when there is a release operation of the expense state set in the specific security zone from the second person, the access control apparatus 100 receives the authentication information from the second accessor, inspects the inputted authentication information, Authenticate access.

At this time, the authentication information of the second passenger may include special code information for granting automatic restoration authority to the security zone, and the access control apparatus 100 has a function of distinguishing special code information included in the authentication information Lt; / RTI > In addition, the special code information may include information on the expiration of the expense duration, which can be accommodated in the expense area. The access control apparatus 100 may recognize the expired expiration duration information as the automatic recovery time of the expense state.

Then, when the time-out access to the second person is authenticated, the access control apparatus 100 switches to the automatic restoration expense mode to release the expense state for the expense area, and expense for the expense area from the expiration of the expense state Counts the automatic recovery time set to automatically recover the state, and automatically restores the expense state for the expended area when the automatic recovery time elapses.

Accordingly, even when the second user leaves the security zone without restoring the security status of the security zone controlled by the access control device 100, the security status of the security zone is automatically The security hole is not generated.

The central control center 150 is a central control center of a security company that provides security services such as access control and can manage a plurality of access control devices 100 and can communicate with the access control device 100 Monitoring the occurrence of an abnormal situation such as a fire in the guard area controlled by the access control device 100 or an intruder occurrence and to allow the occurrence of an abnormal situation in the security area where the abnormal situation occurs, Perform overall management.

2 is a detailed block diagram of an access control apparatus having an automatic expense restoration function according to an embodiment of the present invention. The input control unit 200 includes a communication unit 202, an intrusion detection unit 204, an authentication unit 206 A counting unit 208, a memory unit 210, a control unit 212, and the like.

Hereinafter, the operation of each component of the access control apparatus 100 of the present invention will be described in detail with reference to FIG.

First, the input unit 200 may include a plurality of numeric keys and function keys for inputting various operation requests such as the expiration of the expense state of the access control apparatus 100 or recovery of the expense state, authentication information, etc., And outputs the generated key data to the control unit 212. [0050] In addition, a card recognition unit for receiving authentication information from a card or the like including authentication information may be provided. In a case where the card recognition unit is implemented to receive biometric information as authentication information of a user, a fingerprint information input unit for inputting biometric information, An input unit, and the like. In addition, the input unit 200 may be displayed in a touch screen format whenever required, in place of a physical keypad, depending on the type of device used in the access control device 100.

The communication unit 202 includes a central control center 150 for managing a plurality of access control devices and the like through a communication network such as the Internet, Data transmission / reception is performed.

The intrusion detection unit 204 monitors whether or not a person is present in the security zone through various types of sensors capable of detecting presence of a person installed in the security zone.

When there is a release operation of the expense state set in the expense area controlled by the access control apparatus 100, the authentication unit 206 examines the authentication information inputted for the release of the expense state through the input unit 200, Is checked to see if the formal access or time-limited access to the first or second person is consistent with the registered authentication information of the allowed first or second person. At this time, if the authentication unit 206 verifies that the second passenger is permitted to enter the time limit for a specific time within the predetermined time range in the security zone as a result of the inspection of the authentication information, It is possible to provide such information to the control unit 212. [0050] At this time, the authentication information may be input as biometric information such as a fingerprint or irregularity of a person who performs a release operation, or may be input as digital information stored in an expiration release card issued to enable a release operation, It is not.

In addition, the authentication information of the second person may include special code information for granting automatic restoration authority to the security area. The authentication unit 206 classifies the special code information included in the authentication information, It is possible to recognize that the passenger is permitted to enter the restricted area. In addition, the special code information may include information on the expiration of the expiration of the expiration period, and the authentication unit 206 provides the expired expiration duration information to the control unit 212, ), It is also possible to use the expiration information of the expiration time as an automatic recovery time of the expiration state.

The counting unit 208 counts the automatic restoration time set for automatically recovering the expense state from the time when the expense state of the expense area is released as the second occupant enters and exits the expense area.

The control unit 212 controls the overall operation of the access control apparatus 100 according to an operation program stored in the memory unit 210.

In addition, according to the embodiment of the present invention, when the authentication unit 206 confirms that the time limit access in the security zone is requested, the control unit 212 switches to the automatic recovery security mode and releases the security status for the security zone , Allowing the second user to perform necessary operations in the security area, and automatically recovering the security status for the security area when the automatic recovery time set corresponding to the time-out access is elapsed.

In this case, the termination of the expense state includes releasing a lock device such as a door that is controlled by the access control device 100, and temporarily stopping the operation of an external intruder detection sensor or the like which may be installed in the security area But is not limited thereto.

If the automatic recovery time has elapsed, the control unit 212 checks whether there is a person in the security zone through the intrusion detection unit 204. If the second person normally leaves the security zone within the automatic recovery time, When it is judged that there is no person, it automatically restores the expense status.

In addition, the controller 212 may repeatedly notify the user that the automatic recovery time has elapsed during the predetermined warning time if there is a person in the security area even after the automatic recovery time has elapsed. Even after the warning time has elapsed, The central control center 150 can notify the presence of a person even after the automatic recovery time in the security zone.

In addition, when the time limit access is confirmed, the control unit 212 checks whether or not the input time of the expiration state has been made within the pre-registered time range allowed for the time limit access, and is performed within the time range It is judged that the releasing operation is abnormal, so that the authentication failure can be outputted and the security state can be released. In addition, when switching to the automatic restoration expense mode, the control unit 212 can inform the central control center of the information about the release of the expense state according to the automatic restoration expense mode by a control signal.

FIG. 3 is a flow chart illustrating an automatic control operation of an access control apparatus 100 according to an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

First, when there is an expense state releasing operation for a security area controlled by the access control apparatus 100 by a user, the access control apparatus 100 receives an expense release operation from a user (S300).

Then, the access control apparatus 100 receives the authentication information input for the expiration of the expired state from the passenger, examines the authentication information, and determines whether it is the authentication information of the second passenger corresponding to the time limit access to the passport area (S302).

At this time, if the result of the inspection is that the second person is not the second person, an operator card or the like can be requested. Accordingly, the accessing person can obtain authentication information for authenticating that the first person has full access right in the security area (Not shown) of the access control apparatus 100. The card reader /

At this time, if the operator card or the like is not input, the access control apparatus 100 determines that authentication has failed and continues the expense state for the security zone (S306).

However, when the operator card is normally input and it is judged that the passenger who has performed the security status canceling operation through the authentication information in the operator card is the first passenger having the formal access right in the security zone, The security status for the zone is released and information about the release of the security status is transmitted to the central control center 150 as a control signal (S308). The release of the expense state may include, but is not limited to, releasing a lock device such as a door that is controlled by the access control device 100. [

Then, the access control apparatus 100 stops the operation of various types of intrusion detection sensors installed in the security area (S310) so that the first accessor can normally stay in the security area where the security state is released.

Then, when the first passenger leaves the security zone and restores the security status (S312), the access control device 100 restores the security status for the security zone (S314), and the security status for the security zone is restored normally To the central control center 150 as a control signal (S316).

When the process returns to step S302, the authentication information input for the expiration status release operation is authenticated as the authentication information of the second passenger permitted to enter the time limit in the security zone in step S302 The access control apparatus 100 is switched to the automatic restoration expense mode to release the expense state for the expense area and send information informing the release of the automatic restoration expense state to the central control center as a control signal (S318) .

Then, the access control apparatus 100 stops the operation of various types of intrusion detection sensors installed in the security area (S320), and controls the second access control unit 100 so that the second user can perform a desired operation within the security area where the security state is released do.

At this time, the second person may be a helper who goes to the house and helps the housework, for example, and may be a person who carries out cleaning or security work in the office, but the present invention is not limited thereto. That is, for example, the person may be any kind of person temporarily admitted to the security zone other than the person corresponding to the first person having the authorized access to the security zone.

Then, the access control apparatus 100 checks whether the automatic recovery time set corresponding to the time-out access is passed (S322). In this case, the automatic recovery time means a time when the second user in the security zone can stay in the security zone when the user enters or exits the time limit. This means that the time from when the security status of the security zone is released to the time when the security status is automatically recovered It can mean time. In other words, such an automatic recovery time may be a time required for a second person to clean a specific office, for example, in consideration of the time required for performing an operation such as cleaning in the office, It can be set in advance to the time required to escape.

When the automatic restoration time has elapsed (S322), the access control apparatus 100 checks whether or not the second person in the security zone has not yet left the security zone through the intrusion detection sensor or the like (S324) 2 When the passenger normally leaves the security zone within the automatic recovery time and there is no person in the security zone, the security status is automatically restored (S326).

However, if there is a second passenger in the security zone even after the automatic recovery time elapses, the access control device 100 alerts the second passenger that the automatic restoration time has elapsed through the speaker installed in the security zone (S328 ) The alarm can be performed so that the second person leaves the guard area quickly.

As described above, according to the present invention, it is possible to set different access rights for each accessing person entering and leaving the security area controlled by the access control system, and after the expiration is cleared according to the access right set for the user, The security status of the security zone is automatically restored after a certain period of time even if the passenger leaves the security zone without operating the security guard against the security zone by automatically restoring the security status of the security zone. Do not occur.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should not be limited by the described embodiments but should be defined by the appended claims.

100: access control device 150: central control center
200: input unit 202: communication unit
204: intrusion detection unit 206: authentication unit
208: count unit 210: memory unit
212:

Claims (13)

And an authentication unit for authenticating the time-limited access to the security zone by inspecting the authentication information of the accessing party entered for the unlocking operation when there is an unlocking operation of the security status set in the specific security zone by the accessing party, The information includes the expiration of the expense according to the person,
A counting unit for counting a time from the time when the expense state is released to the expense area in the case of the time-
An intrusion detection unit for checking whether a person is present in the security zone,
When the time limit access is confirmed by the authentication unit, the mode is switched to the automatic restoration expense mode to release the expense state for the security zone, and when the time counted by the counting unit exceeds the expiration duration, And a control unit for restoring the expense state with respect to the expense area,
Wherein the control unit checks whether or not the time at which the release operation is input is made within a pre-registered time range allowed for the time-out access, and when the time is not within the time range Wherein the control unit determines that the release operation is abnormal and maintains the expense state.
The method according to claim 1,
Wherein,
Wherein the intruder detection unit checks whether a person is present in the security zone when the automatic recovery time elapses and automatically restores the security status if there is no person. .
3. The method of claim 2,
Wherein,
Wherein the alarm is repeatedly alarmed for a predetermined warning time that the automatic recovery time has elapsed when a person is present in the security area even after the automatic recovery time elapses.
The method of claim 3,
Wherein,
And notifies the central control center on the communication network of the presence of a person in the security area if there is a person in the security area even after the warning time has elapsed.
The method according to claim 1,
Wherein,
Wherein the information about the release of the expense state according to the automatic restoration expense mode is notified to the central control center on the communication network upon switching to the automatic restoration expense mode.
delete delete The method according to claim 1,
The authentication information includes:
Wherein the biometric information of the person performing the release operation or the digital information stored in the expiration release card issued to enable the release operation is input.
Receiving authentication information of the passenger inputted by the passenger for the release operation of the expense state set in the specific security zone;
Authenticating the time-limited access to the guard area by inspecting the authentication information;
Checking whether the time at which the release operation is entered is within a pre-registered time range permitted for the time-out access, when authenticating the time-out access;
If the release operation is not performed within the time range, determining that the release operation is abnormal and maintaining the expense state;
Switching to an automatic restoration mode when the release operation is performed within the time range to release the expense state for the security zone;
Counting a time from when the expense state is released;
If the counted time elapses the expiration cancellation duration according to the passenger included in the authentication information, automatically restoring the expense state for the expense area
The method comprising the steps of:
10. The method of claim 9,
Wherein said recovering comprises:
Checking whether a person is present in the guard area when the automatic recovery time elapses;
Restoring the expense state for the expense area if no person is present in the expense area;
And not restoring the expense state if a person is present in the expense area even after the automatic recovery time has elapsed
And an automatic cost recovery method.
11. The method of claim 10,
Repeatedly alerting the user during a predetermined warning time that the automatic recovery time has elapsed in the presence of a person in the guard area even after the automatic recovery time has elapsed;
If there is a person in the security zone even after the warning time has elapsed, notifying the central control center on the communication network of the presence of a person in the security zone
Further comprising the steps of:
10. The method of claim 9,
Further comprising the step of informing the central control center on the communication network of information on the release of the expense state according to the automatic restoration expense mode upon switching to the automatic restoration expense mode.
delete
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KR20210055473A (en) * 2019-11-07 2021-05-17 정찬욱 Identification system of accessor by management area and its operation method
KR102507546B1 (en) * 2022-06-03 2023-03-08 송환의 Electronic Security Remote Automatic Set System

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Publication number Priority date Publication date Assignee Title
KR20210055473A (en) * 2019-11-07 2021-05-17 정찬욱 Identification system of accessor by management area and its operation method
KR102298761B1 (en) * 2019-11-07 2021-09-03 정찬욱 Identification system of accessor by management area and its operation method
KR102507546B1 (en) * 2022-06-03 2023-03-08 송환의 Electronic Security Remote Automatic Set System

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