JP6454459B2 - Security system and security method - Google Patents

Description

  The present invention relates to a security system in which a security control device installed in a predetermined facility acquires information indicating the status of the facility, and transmits the acquired information to a security center, and a security method thereof.

  2. Description of the Related Art Conventionally, a security system that detects and notifies a locked state of a door or an open / closed state of a door in a predetermined facility such as a house is known. In such a security system, the security target area and means differ depending on whether the family is at home, or whether it is at home even if it is at sleep, and generally, the security mode and the non-security mode are different. It has a function to switch.

  For example, Patent Document 1 discloses a security mode and detection that enables a detection function from an abnormality detection sensor in a home security system that issues an alarm or notification in response to an abnormality signal from an abnormality detection sensor that detects intrusion into a house. There is disclosed a technique for providing a non-security mode for disabling the function and executing the switching according to the state of the entrance / exit in the house.

  In the home security system disclosed in Patent Document 1, when an abnormality signal is received from an abnormality detection sensor in a state where the security mode is set, a notification is made to the security center.

JP 2008-65746 A

  However, the above-described conventional technique has a problem that a large cost is required to construct a communication network between a security destination and a security center. This is because a dedicated line or a VPN (Virtual Private Network) is used for the communication network between the security guard and the security center from the viewpoint of real-time performance and reliability. With VPN, an existing network such as the Internet can be used. However, since a VPN-compatible router, dedicated machine, and dedicated client software are required, an increase in cost is unavoidable.

  In particular, when the number of guards is large as in a home security system, the increase in cost becomes serious. In the home security system, there are various network configurations in a home that is a security destination, and it is required to minimize changes to the network configuration.

  For this reason, it is considered to make effective use of existing communication networks and to build a security network at low cost, but how to improve real-time performance and reliability at that time is an important issue It has become.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to provide a security system and a security method capable of improving real-time performance and reliability while suppressing costs. .

In order to solve the above-described problems and achieve the object, the invention according to claim 1 is that a security control device installed in a predetermined facility acquires information indicating the status of the facility, and the acquired information is stored in the security center. The security control device transmits periodic packets to the security center periodically, and transmits non-periodic packets to the security center according to the situation of the facility. Communication control means for determining whether or not is necessary, and non-periodic transmission means for non-periodically transmitting packets to the security center based on the determination result by the communication control means, When a packet is received from the security control device, the address holding means for holding the address of the transmission source of the packet for a predetermined time and the address holding means A address the security controller pairs security controller transmits a packet for transmission based on means, said pair security controller transmitting means, a request for cancellation of security based on the user's remote control When received, the guard control device transmits a guard state change instruction corresponding to the request to the guard control device, and when the guard control device receives the guard state change instruction, the guard control device displays the guard state for the predetermined facility. The security control device changes the security status when the security status is being monitored and the presence of a person is detected by an entrance / exit sensor provided near the entrance / exit of the predetermined facility. Notification means for performing a notification prompting the user, and the notification means sets a waiting time from the detection of the presence of a person by the entrance / exit sensor until the start of the notification. However, the waiting time is determined by the security control device transmitting the non-periodic packet to the security center based on the detection of the presence of the person by the entrance / exit sensor, and cannot be transmitted at the security center. It is longer than a time lag in which the change instruction based on the user's remote operation is received from the security center .

  The invention according to claim 2 is the invention according to claim 1, wherein the periodic transmission means, the non-periodic transmission means, and the security control device transmission means use a user datagram protocol (UDP). And

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the packet transmission interval by the periodic transmission means is shorter than the time during which the address holding means holds the address of the transmission source. It is characterized by.

In addition, the invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein the notification means is configured to receive the packet within a predetermined time from the last reception of the packet from the security center. When the entrance / exit sensor detects that a person is present, the waiting time is not provided, and the person is located by the entrance / exit sensor after a predetermined time has elapsed since the last reception of the packet from the security center. When this is detected, the waiting time is provided.

The invention according to claim 5 is the invention according to any one of claims 1 to 4 , wherein the periodic transmission means sends a packet including information indicating the status of the facility to the security center. And transmitting.

The invention according to claim 6 is the invention according to any one of claims 1 to 5 , wherein the security center has an elapsed time since the last reception of a packet from the security control device. When it exceeds a threshold value, it has further provided the disconnection determination means which determines with the disconnection having generate | occur | produced between the said security control apparatuses characterized by the above-mentioned.

The invention according to claim 7 is a security method in a security system in which a security control device installed in a predetermined facility acquires information indicating the status of the facility and transmits the acquired information to a security center. A periodic transmission step in which the security control device periodically transmits packets to the security center; and the security control device needs to transmit non-periodic packets to the security center according to the situation of the facility. A determination step for determining whether or not the security control device, based on the determination result of the determination step, a non-periodic transmission step for irregularly transmitting packets to the security center, and the security center, When a packet is received from the security control device, an address holding step for holding a source address of the packet for a predetermined time; and Bei center, and a pair security controller transmission step for transmitting the packet to the security controller based on the address held by said address holding step, said pair security controller transmitting step, the user of the remote operation When a request for release of security based on the request is received, a security status change instruction corresponding to the request is transmitted to the security control device, and the security control device receives the security status change instruction. A security status change step for changing the security status for the predetermined facility, and that the security status is under security, and the presence / absence of a person is detected by an entrance / exit sensor provided near the entrance / exit of the predetermined facility The security control device further includes a notification step for notifying the change of the security state, wherein the notification step comprises: There is a waiting time from when the presence / absence sensor detects that the person is present until the start of the notification, and the waiting time is detected by the security control device that the person is located by the entrance / exit sensor. The non-periodic packet is transmitted to the security center based on the security center, and the change instruction based on the remote operation of the user, which cannot be transmitted at the security center and is in a standby state, is received from the security center. It is characterized by being longer .

According to the present invention, the security control device periodically transmits a packet to the security center , determines whether or not a non-periodic packet transmission is necessary according to the situation of the facility to be guarded , Based on the determination result, the packet is transmitted irregularly to the security center. When the security center receives a packet from the security control device, it holds the address of the transmission source of the packet for a predetermined time, and holds the address. Since the packet is transmitted to the security control device based on the above, it is possible to improve the real time property and reliability of the communication while suppressing the cost.

FIG. 1 is an explanatory diagram for explaining a security system according to the present embodiment. FIG. 2 is an explanatory diagram for explaining the system configuration of the security system. FIG. 3 is a block diagram illustrating an internal configuration of the security control device illustrated in FIG. 1. FIG. 4 is an explanatory diagram illustrating a specific example of a notification transmitted to the security center. FIG. 5 is a block diagram showing an internal configuration of the security center shown in FIG. FIG. 6 is an explanatory diagram for explaining security control device management data. FIG. 7 is an explanatory diagram for explaining transmission / reception of a UDP packet. FIG. 8 is an explanatory diagram for explaining operation guidance for releasing the security mode. FIG. 9 is a flowchart showing a UDP packet transmission process in the security control apparatus. FIG. 10 is a flowchart for explaining the processing operation in the security mode of the security control device. FIG. 11 is a flowchart for explaining the processing operation of the security center. FIG. 12 is an explanatory diagram for explaining a connection example between the security control device and the security center. (Part 1) FIG. 13 is an explanatory diagram for explaining a connection example between the security control device and the security center. (Part 2)

  Exemplary embodiments of a security system and a security method according to the present invention will be described below in detail with reference to the accompanying drawings.

  First, the security system according to the present embodiment will be described. FIG. 1 is an explanatory diagram for explaining a security system according to the present embodiment. The security control device 10 shown in FIG. 1 is installed inside a security target facility such as a residence, and is a security mode that is an operation mode for performing security for the security target facility, and an operation mode that does not perform security for the security target facility. The operation mode can be changed between the non-guard mode. The security target facility shown in FIG. 1 is an example of a residence.

  Various sensors 14 are provided in the residence and are connected to the security control device 10. The sensor 14 includes a sensor that detects opening / closing of a house by detecting opening / closing of a door and a sensor that detects vibration of a window. When the entrance / exit is detected by the sensor 14 in a state where the operation mode is set to the security mode, the security control device 10 performs an alarm operation after the elapse of a predetermined release grace period. The predetermined release grace time is provided because the security control device 10 is provided in the residence, and a certain amount of time is required until the residence resident returns home and opens the door to release the security mode. Is necessary.

  The security control device 10 can communicate with a security center 20 provided outside the residence by a user datagram protocol (UDP). The security control device 10 periodically transmits UDP packets to the security center 20 at 25-second intervals. Moreover, the security control apparatus 10 transmits a non-periodic UDP packet according to the condition of a residence, when the sensor 14 detects entrance / exit.

  When the security center 20 receives the UDP packet from the security control device 10, the security center 20 registers the address of the security control device 10 that is the transmission source in the address data 24b. This address is held for 30 seconds from the reception of the last UDP packet, but is discarded when 30 seconds have passed.

  For this reason, the security center 20 can transmit a UDP packet to the security control device 10 for 30 seconds from the reception of the last UDP packet. As described above, since the security control device 10 periodically transmits UDP packets at intervals of 25 seconds, if the regularly transmitted UDP packets are properly reaching the security center 20, the security center. 20 can transmit a UDP packet to the security control apparatus 10 at an arbitrary timing.

  Communication by the UDP packet from the security control device 10 to the security center 20 is used for notification of changing the operation mode, notification when an alarm is executed, in addition to notification of entering and leaving the residence.

  Communication using the UDP packet from the security center 20 to the security control device 10 is used for changing the operation mode of the security control device 10 by remote operation. The operation mode of the security control device 10 can be changed by an operation on a display operation unit provided in the security control device 10 or by a remote operation via the security center 20.

  For example, when a resident of a residence cancels the security mode in advance before returning home, a control request for canceling the security mode is transmitted from the terminal device 30 such as a mobile phone to the security center 20. When receiving a control request from the terminal device 30, the security center 20 stores a corresponding control instruction in a UDP packet and transmits it to the security control device 10. The security control device 10 can cancel the security mode by changing the operation mode based on this control instruction.

  Here, if the UDP packet periodically transmitted by the security control device 10 does not reach the security center 20 and the address of the security control device 10 is discarded at the security center 20, the security control device from the security center 20. 10 cannot send a control request.

  In such a case, the resident enters the residence assuming that the security mode has been canceled by transmitting a control request indicating the cancellation of the security mode. However, since the security mode is not actually canceled, the sensor 14 Alarm operation will be performed after the release grace time elapses after the entry / exit is detected.

  When the security control device 10 detects entry / exit, the UDP packet is transmitted to the security center 20 because the periodically transmitted UDP packet does not reach the security center 20 and the security control device 10 This is to cope with the case where the address of the previous address has been discarded.

  This point will be described in detail. Even if the UDP packet transmitted periodically does not reach the security center 20 and the address of the security control device 10 is discarded at the security center 20, the entrance / exit by the sensor 14 is performed. If the UDP packet transmitted irregularly based on this detection reaches the security center 20, the address of the security control device 10 is registered again in the address data 24b. For this reason, the security center 20 can transmit a control instruction to the security control device 10 to release the security mode of the security control device 10.

  In this way, the security control device 10 periodically transmits UDP packets to the security center 20, and transmits the UDP packets to the security center 20 irregularly according to the situation of the facility. The security center 20 performs security control. When a UDP packet is received from the device 10, the transmission source address is held for a predetermined time, and the UDP packet is transmitted to the security control device based on the held address. Therefore, communication is performed while suppressing costs using UDP. Real-time performance and reliability can be improved.

  Next, the system configuration of the security system will be described. FIG. 2 is an explanatory diagram for explaining the system configuration of the security system. As shown in FIG. 2, the security center 20 is connected to a plurality of security control devices 10 respectively provided in a plurality of facilities.

  Here, the security center 20 and the plurality of security control devices 10 are connected by two networks, a network N1 using UDP and a network N2 using other than UDP. This network N2 is used when the network N1 cannot be used, and uses HTTPS (Hypertext Transfer Protocol over SSL / TLS), a cellular phone line, or the like.

  The plurality of security control devices 10 are respectively connected to a plurality of sensors 14 and transmit various notifications to the security center 20 via the network N1 depending on the situation of the facility. When the network N1 is not available, Various notifications are made via N2. As a result, even when communication by the network N1 using UDP cannot be performed properly, the security center 20 can be notified.

  The security center 20 is connected to a plurality of terminal devices 30 via the network N3. The network N3 can use HTTPS, a mobile phone line, or the like. A user such as a resident of the residence accesses the security center 20 and performs authentication, thereby requesting the security control device 10 corresponding to the user among the plurality of security control devices 10 to change the operation mode. be able to.

  Next, the internal configuration of the security control device 10 will be described. FIG. 3 is a block diagram showing an internal configuration of the security control device 10 shown in FIG. As shown in FIG. 3, the security control device 10 is connected to a display operation unit 11, a speaker 12, and a plurality of sensors 14. Moreover, the security control apparatus 10 has the 1st communication part 15, the 2nd communication part 16, the memory | storage part 17, and the control part 18 in the inside.

  The display operation unit 11 is a user interface unit including a touch panel display and the like, and performs display output for the user and reception of operation by the user. The speaker 12 performs audio output to the user. The sensor 14 is provided in a door, a window, etc., detects opening and closing and vibration, and outputs it to the security control apparatus 10.

  The first communication unit 15 is an interface unit for performing data communication with the security center 20 via the network N1. The second communication unit 16 is an interface unit for performing data communication with the security center 20 via the network N2.

  The 1st communication part 15 has the regular transmission part 15a, the non-periodic transmission part 15b, and the receiving part 15c in the inside. The regular transmission unit 15a is a processing unit that transmits UDP packets to the security center 20 at intervals of 25 seconds. The irregular transmission unit 15b is a processing unit that irregularly transmits a UDP packet according to the situation. The receiving unit 15 c is a processing unit that receives a UDP packet transmitted from the security center 20.

  The storage unit 17 is a storage device including a hard disk device, a nonvolatile memory, and the like. The storage unit 17 is used to store the last entry / exit date 17a, the personal identification number last update date 17b, the system parameter last update date 17c, and the firmware version 17d. The last entry / exit date 17a is data indicating the last entry / exit date. The code number last update date and time 17b is data indicating the latest update date and time of the code number set in the security control device 10. The system parameter last update date and time 17c is data indicating the date and time when the parameter related to the system of the security control device 10 was last updated. The firmware version 17d is data indicating the firmware version of the security control apparatus 10.

  The control unit 18 is a control unit that controls the security control apparatus 10 as a whole, and includes a mode change unit 18a, an operation guidance notification unit 18b, a sensor output acquisition unit 18c, an alarm processing unit 18d, and a communication control unit 18e.

  The mode change unit 18 a is a processing unit that changes the operation mode of the security control device 10. Specifically, the mode changing unit 18a performs setting of a security mode that is a change from the non-guard mode to the security mode and cancellation of the security mode that is a change from the security mode to the non-guard mode.

  The mode changing unit 18a changes the operation mode from the security mode to the non-security mode when the display operation unit 11 receives an operation requesting the release of the security mode. Further, when the display operation unit 11 receives an operation for requesting the setting of the security mode, the mode change unit 18a changes from the non-security mode to the security mode after a predetermined time has elapsed.

  When the operation for requesting the setting of the security mode is received by the display operation unit 11, the user requests the setting of the security mode inside the facility for waiting for the elapse of a predetermined time and then setting the security mode. This is to prevent an alarm from being triggered by detecting the opening of the door when the door is opened after leaving the facility.

  In addition, when the mode changing unit 18a receives a control instruction for changing the operation mode from the security center 20, the mode changing unit 18a changes the operation mode in accordance with the control instruction. Here, when the operation mode is changed in accordance with the received control instruction, it is not necessary to wait for a predetermined time even if the control instruction requests the setting of the security mode.

  The operation guidance notifying unit 18b is a processing unit that uses the display operation unit 11 and the speaker 12 to notify guidance related to operations. Specifically, the operation guidance notifying unit 18b is in the security mode until the release grace time elapses from the detection of the entrance / exit when the sensor 14 detects the entrance / exit when the operation mode is set to the guard mode. A notification requesting release is performed. This notification can be in any form such as a voice message telling that the security mode is set or a predetermined melody.

  The sensor output acquisition unit 18 c is a processing unit that acquires outputs from the plurality of sensors 14. The sensor output acquisition unit 18c outputs the output of each sensor 14 to the alarm processing unit 18d. If the sensor 14 provided near the door detects entry / exit, the sensor output acquisition unit 18c updates the last entry / exit date 17a and notifies the operation guidance notification unit 18b.

  The alarm processing unit 18d performs an alarm operation when an entry / exit room, window vibration, or the like is detected by the output of the sensor 14 in a state set in the security mode. This alarm operation includes output of a warning sound by the speaker 12 and notification to the security center 20.

  In addition, when the entrance / exit is detected in the state set in the security mode, the alarm processing unit 18d performs an alarm operation after a predetermined release grace period elapses. On the other hand, when other abnormalities such as window vibrations are detected, a grace period or the like is unnecessary, so that an alarm operation can be immediately executed.

  The communication control unit 18 e is a processing unit that controls communication with the security center 20. The communication with the security center 20 mainly uses the first communication unit 15, but can be substituted by the second communication unit 16 when communication by the first communication unit 15 cannot be performed. Specifically, when the response to the UDP packet transmitted by the first communication unit 15 does not reach within a predetermined time, the communication control unit 18 e performs communication using the second communication unit 16.

  FIG. 4 is an explanatory diagram illustrating a specific example of a notification transmitted from the communication control unit 18e to the security center 20. As shown in FIG. 4, the communication control unit 18 e executes an alarm by the alarm processing unit 18 d when the security control device 10 is activated, when the sensor output acquisition unit 18 c detects entry / exit, when the detection state of each sensor 14 changes. When the operation mode is changed by the mode change unit 18a, when the display operation unit 11 receives an operation by the guard, the security center 20 is notified. The display operation unit 11 accepts an operation by a guard when an alarm is executed and a guard is dispatched. The security center performs a predetermined operation on the display operation unit 11 and notifies the security center 20 of acceptance of the operation, whereby the security center 20 can grasp that the dispatched security officer has arrived.

  The various notifications shown in FIG. 4 are stored in a UDP packet by the first communication unit 15 and transmitted. That is, the various notifications shown in FIG. 4 are transmitted to the security center 20 as non-periodic UDP packets.

  The UDP packet transmitted by the first communication unit 15 can store the last entry / exit date / time 17a, the personal identification number last update date / time 17b, the system parameter last update date / time 17c, and the firmware version 17d. Such information can be stored regardless of whether it is a regular UDP packet or a non-periodic UDP packet.

  Next, the internal configuration of the security center 20 will be described. FIG. 5 is a block diagram showing an internal configuration of the security center 20 shown in FIG. As shown in FIG. 5, the security center 20 includes a first communication unit 21, a second communication unit 22, a third communication unit 23, a storage unit 24, and a control unit 25.

  The first communication unit 21 is an interface unit for performing data communication with the security control device 10 via the network N1. The 2nd communication part 22 is an interface part for performing data communication with the security control apparatus 10 via the network N2. The third communication unit 23 is an interface unit for performing data communication with the terminal device 30 via the network N3.

  The first communication unit 21 includes therein a reception unit 21a, an address data update unit 21b, a response transmission unit 21c, and a control instruction transmission unit 21d. The receiving unit 21 a is a processing unit that receives a UDP packet from the security control device 10. The address data updating unit 21b deletes the address where the address of the source security control device 10 is registered in the address data 24b when the receiving unit 21a receives the UDP packet, and the address after 30 seconds have passed since the last reception. It is a processing unit that performs processing. The response transmission unit 21c is a processing unit that transmits a reception confirmation response to the transmission source security control device 10 when the reception unit 21a receives a UDP packet. The control instruction transmission unit 21 d is a processing unit that receives control from the control unit 25 and transmits a control instruction to the security control device 10.

  The storage unit 24 is a storage device including a hard disk device, a nonvolatile memory, and the like. The storage unit 24 is used to store security control device management data 24a, address data 24b, and alarm history data 24c.

  The security control device management data 24a is data for managing information related to the security control device 10. The address data 24b is data that manages the security control device ID for identifying the security control device 10 and the address of the security control device 10 in association with each other. The alarm history data 24c is data indicating a history of alarms issued by the security control device 10.

  The control unit 25 is a control unit that controls the entire security center 20, and includes a situation management unit 25a, an alarm reception unit 25b, a disconnection determination unit 25c, a control request processing unit 25d, and a communication control unit 25e.

  The situation management unit 25 a is a processing unit that updates the security control device management data 24 a based on various notifications received from the security control device 10. The alarm receiving unit 25 b is a processing unit that receives a notification related to an alarm from the security control device 10. The alarm receiving unit 25b associates the notification related to the alarm with the security control device ID of the security control device 10 and adds the notification to the alarm history data 24c. Further, the alarm receiving unit 25b dispatches a guard based on the notification related to the alarm received from the security control device 10.

  The disconnection determination unit 25c is a processing unit that determines that an abnormality has occurred in communication with the security control device 10 using the network N1 when no UDP packet has been received from the security control device 10 for a predetermined time or longer.

  When the access from the terminal device 30 is received, the control request processing unit 25d identifies the security control device 10 associated with the user by performing authentication based on the user identification information and the password, and the terminal device If the operation mode change request is received from 30, the control instruction transmission unit 21d is caused to transmit an operation mode change instruction to the identified security control device 10.

  The communication control unit 25 e is a processing unit that controls communication with the security control device 10 and the terminal device 30. The first communication unit 21 is mainly used for communication with the security control device 10, but can be substituted by the second communication unit 22 when communication by the first communication unit 21 cannot be performed. Specifically, the communication control unit 25e uses the second communication unit 22 when communicating with the security control device 10 that has been determined by the disconnection determination unit 25c that an abnormality has occurred in communication using the network N1.

  Next, the security control device management data 24a shown in FIG. 5 will be described. FIG. 6 is an explanatory diagram for explaining the security control device management data 24a. As shown in FIG. 6, the security control device management data 24 a includes a security control device ID that identifies the security control device 10, an operation mode of the security control device 10, and a final reception of the UDP packet from the security control device 10. The date / time, the last entry / exit date / time in the security control device 10, the last update date / time of the security code of the security control device 10, the last update date / time of the system parameters of the security control device 10, and the firmware of the security control device 10 This is data in which a fair version is associated with data about a user associated with the security control device 10. The data about the user includes user identification information and a personal identification number.

  Next, transmission / reception of UDP packets will be described. FIG. 7 is an explanatory diagram for explaining transmission / reception of a UDP packet. As shown in FIG. 7A, the security control device 10 periodically transmits UDP packets to the security center 20 at intervals of 25 seconds. When receiving the UDP packet from the security control device 10, the security center 20 registers and holds the address of the security control device 10 that is the transmission source in the address data 24 b and returns a response to the security control device 10.

  The security center 20 discards the address when 30 seconds have elapsed since the last UDP packet was received, but the security control device 10 periodically transmits UDP packets at intervals of 25 seconds. As long as the UDP packet transmitted to is properly reaching the security center 20, the address holding is continued. For this reason, the security center 20 can transmit a UDP packet to the security control device 10 at an arbitrary timing.

  On the other hand, as shown in FIG. 7B, when the UDP packet transmitted from the security control device 10 does not reach the security center 20 for some reason, the security center 20 finally receives the UDP packet. The address is discarded at 30 seconds from the beginning. For this reason, the control instruction cannot be transmitted until the next UDP packet is received and the address of the security control apparatus 10 is registered again.

  Since the transmission of the regular UDP packet from the security control apparatus 10 is at intervals of 25 seconds, if the last received UDP packet and the UDP packet received after the address is discarded are both regular UDP packets, the shortest Thus, the control instruction cannot be transmitted for about 20 seconds.

  However, since the security control device 10 transmits a UDP packet irregularly according to the state of the facility, the security center 20 can receive the irregular packet and register the address again. For example, if the control instruction is an instruction to cancel the security mode, it may be canceled when the resident comes home. Therefore, if a UDP packet is transmitted upon detection of entry / exit, even if the address is discarded at the security center 20 at that time, the address is re-registered by receiving the UDP packet based on the detection of entry / exit, and transmitted. The control instruction that has been in a standby state without being transmitted can be transmitted to the security control device 10 to release the security mode of the security control device 10.

  Next, operation guidance for releasing the security mode will be described. FIG. 8 is an explanatory diagram for explaining operation guidance for releasing the security mode. As shown in FIG. 8 (a), the operation guidance notifying unit 18b determines that the release grace time T1 from the entry / exit detection is detected when the sensor 14 detects entry / exit with the operation mode set to the security mode. A notification requesting release of the security mode is performed until the time has elapsed. Then, when the release grace time T1 elapses without releasing the security mode, the alarm processing unit 18d performs an alarm operation.

  Here, consider a case where the user has made a control request for canceling the security mode by remote operation, and the address of the security control device 10 has been discarded at the security center 20. In this case, as described above, the security control device 10 transmits a UDP packet irregularly, the security center 20 re-registers the address, and the control instruction that has been in a standby state without being transmitted can be security-controlled. It transmits to the apparatus 10 and cancels the security mode of the security control apparatus 10.

  However, there is a time lag until the security control device 10 transmits a non-periodic UDP packet, receives a control instruction from the security center 20, and cancels the security mode. It is not necessary for the user who thinks that the security mode has been canceled by transmitting a control request indicating the cancellation of the security mode, if the notification requesting the cancellation of the security mode is performed during this time lag. Notification will be made, and distrust may be given to the user.

  Therefore, as shown in FIG. 8B, a notification waiting time T <b> 2 longer than the above time lag is provided from when the entrance / exit is detected by the sensor 14 until notification for canceling the guard mode is performed. If the notification waiting time T2 is provided in this way, when the user has made a control request for canceling the security mode by remote control, the security control device 10 can perform non-periodic UDP during the notification waiting time T2. Since a packet can be transmitted and a control instruction can be received from the security center 20, unnecessary notification can be avoided.

  The notification waiting time T2 may be always provided, or may be provided only when there is a possibility that the address is discarded at the security center 20. Specifically, when there is no response from the security center 20 for 30 seconds or more, the notification waiting time T <b> 2 may be provided assuming that the address may be discarded at the security center 20.

  Next, UDP packet transmission processing in the security control apparatus 10 will be described. FIG. 9 is a flowchart showing a UDP packet transmission process in the security control apparatus 10. As illustrated in FIG. 9, the regular transmission unit 15a included in the first communication unit 15 of the security control device 10 first determines whether 25 seconds have elapsed since the previous transmission of the UDP packet (step S101).

  If 25 seconds have passed since the previous transmission of the UDP packet (step S101; Yes), the regular transmission unit 15a transmits the UDP packet to the security center 20 (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If 25 seconds have not elapsed since the previous transmission of the UDP packet (step S101; No), the communication control unit 18e determines whether the sensor output acquisition unit 18c has detected entry / exit (step S102). If entry / exit is detected (step S102; Yes), the communication control unit 18e causes the non-periodic transmission unit 15b to transmit a UDP packet (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If entry / exit is not detected (step S102; No), the communication control unit 18e determines whether a change has occurred in the detection state of the sensor 14 (step S103). If a change has occurred in the detection state of the sensor 14 (step S103; Yes), the communication control unit 18e causes the non-periodic transmission unit 15b to transmit a UDP packet (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If no change has occurred in the detection state of the sensor 14 (step S103; No), the communication control unit 18e determines whether an alarm is issued by the alarm processing unit 18d (step S104). If the alarm is executed (step S104; Yes), the communication control unit 18e causes the non-periodic transmission unit 15b to transmit a UDP packet (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If the alarm is not executed (step S104; No), the communication control unit 18e determines whether the operation mode has been changed by the mode change unit 18a (step S105). If the operation mode has been changed (step S105; Yes), the communication control unit 18e causes the non-periodic transmission unit 15b to transmit a UDP packet (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If the operation mode has not been changed (step S105; No), the communication control unit 18e determines whether an operation requiring notification, such as an operation by a guard, has been received (step S106). If the operation requiring the notification is accepted (step S106; Yes), the communication control unit 18e causes the non-periodic transmission unit 15b to transmit a UDP packet (step S107), and ends the process. After the end of the process, the security control device 10 starts the process again from step S101.

  If the operation requiring the notification is not received (step S106; No), the security control device 10 ends the process as it is. After the end of the process, the security control device 10 starts the process again from step S101.

  Next, the processing operation in the security mode of the security control device 10 will be described. FIG. 10 is a flowchart for explaining the processing operation in the security mode of the security control device 10.

  The alarm processing unit 18d determines whether entry / exit is detected in the security mode (step S201). As a result, if entry / exit is not detected (step S201; No), the mode change unit 18a determines whether a control instruction for requesting the release of the security mode is received from the security center 20 (step S211).

  If the control instruction for canceling the security mode has not been received (step S211; No), the mode changing unit 18a determines whether or not the display operation unit 11 has received an operation requesting the cancellation of the security mode ( Step S212). If an operation for requesting the release of the security mode has not been received (step S212; No), the process is terminated as it is. After the end of the process, the security control device 10 starts the process again from step S201.

  If the entrance / exit is detected in the security mode (step S201; Yes), the operation guidance notification unit 18b determines whether or not a predetermined time (for example, 30 seconds) or more has elapsed since the previous reception of the UDP packet ( Step S202). If the predetermined time has not elapsed since the last reception of the UDP packet (step S202; No), the operation guidance notification unit 18b starts notification for requesting the release of the security mode (step S205).

  If a predetermined time has elapsed since the last reception of the UDP packet (step S202; Yes), the operation guidance notification unit 18b determines whether or not notification for requesting the release of the security mode has been started (step S202). S203). If the notification requesting the release of the security mode has not been started (step S203; No), the operation guidance notification unit 18b determines whether the notification waiting time T2 has elapsed since the detection of the entry / exit (step S204). If the notification waiting time T2 has elapsed since the entry / exit detection (step S204; Yes), the operation guidance notification unit 18b starts notification for requesting the release of the security mode (step S205).

  After step S205, when the notification waiting time T2 has not elapsed since detection of entry / exit (step S204; No), or when notification for requesting the release of the security mode has been started (step S203; Yes), the mode is changed. The unit 18a determines whether or not a control instruction for canceling the security mode is received from the security center 20 (step S206).

  If the control instruction for canceling the security mode has not been received (step S206; No), the mode changing unit 18a determines whether or not the display operation unit 11 has received an operation requesting the cancellation of the security mode ( Step S207).

  If a control instruction for canceling the security mode is received from the security center 20 (step S206; Yes, or step S211; Yes), or if the display operation unit 11 receives an operation requesting the cancellation of the security mode (step S207; Yes, or step S212; Yes), mode change part 18a cancels security mode (step S210), and ends processing. After the end of this process, the security control device 10 operates in the non-security mode.

  If the display operation unit 11 has not received an operation for requesting the release of the security mode (step S207; No), the alarm processing unit 18d determines whether or not the release grace time T1 has elapsed since the entry / exit was detected ( Step S208). If the release grace period T1 has not elapsed (step S208; No), the process proceeds to step S203. If the release grace time T1 has elapsed (step S208; Yes), the alarm processing unit 18d performs an alarm operation (step S209). This alarm operation includes output of a warning sound by the speaker 12 and notification to the security center 20. After the alarm operation, the security control device 10 ends the process and starts the process again from step S201.

  Next, the processing operation of the security center 20 will be described. FIG. 11 is a flowchart for explaining the processing operation of the security center 20. As illustrated in FIG. 11, first, the reception unit 21a of the first communication unit 21 determines whether a UDP packet has been received from the security control device 10 (step S301).

  If no UDP packet has been received from the security control device 10 (step S301; No), the address data update unit 21b determines whether 30 seconds have elapsed since the last reception of the UDP packet (step S309).

  If 30 seconds have elapsed since the last reception of the UDP packet (step S309; Yes), the address data update unit 21b discards the UDP address of the security control device 10 and updates the address data 24b (step S309). S310).

  After step S310, or when 30 seconds have not elapsed since the reception of the previous UDP packet (step S309; No), the disconnection determination unit 25c determines whether or not a predetermined time has elapsed since the reception of the previous UDP packet. Determination is made (step S311).

  If a predetermined time has elapsed since the last reception of the UDP packet (step S311; Yes), the disconnection determination unit 25c determines that an abnormality has occurred in communication with the security control device 10 using the network N1. (Step S312). The communication control unit 25e switches the communication with the security control apparatus 10 determined to have an abnormality in the communication using the network N1 to the network N2 (step S313).

  If the UDP packet is received from the security control device 10 (step S301; Yes), the status management unit 25a updates the security control device management data 24a with the information stored in the UDP packet (step S302). Further, the address data updating unit 21b registers and updates the address of the security control apparatus 10 that is the transmission source of the UDP packet in the address data 24b (step S303). The response transmission unit 21c transmits a reception confirmation response to the security control apparatus 10 that is the transmission source of the UDP packet (step S304).

  After step S304, the alarm reception unit 25b determines whether the received UDP packet stores a notification related to the alarm (step S305). If the received UDP packet stores a notification related to the alarm (step S305; Yes), the alarm reception unit 25b performs an alarm process (step S306). Specifically, the alarm reception unit 25b associates the notification received from the security control device 10 with the security control device ID of the security control device 10 and adds the notification to the alarm history data 24c. Further, the alarm reception unit 25b dispatches a guard based on the notification received from the security control device 10.

  After completion of step S306, if the received UDP packet does not store the notification related to the alarm (step S305; No), after the communication line is switched (step S313), or a predetermined time from the previous reception of the UDP packet If it has not elapsed (step S311; No), the control request processing unit 25d determines whether a control request has been received from the terminal device 30 (step S307).

  If a control request is received from the terminal device 30 (step S307; Yes), the control request processing unit 25d causes the control instruction transmission unit 21d to transmit a corresponding control instruction (step S308). If the address of the destination security control apparatus 10 has been discarded from the address data 24b, it waits for transmission of a control instruction until it is registered again. If the communication line has been switched in step S313, a control instruction is transmitted via the network N2.

  After the end of step S308 or when no control request has been received (step S307; No), the security center 20 ends the process and starts the process again from step S301.

  Next, a connection example between the security control device 10 and the security center 20 will be described. 12 and 13 are explanatory diagrams for explaining an example of connection between the security control device 10 and the security center 20.

  FIG. 12A is a diagram showing a configuration in which a fixed address is assigned to the security control device 10 and is directly connected to the network N1. In this configuration, since the address of the security control device 10 is not changed, it is preferable that the security center 20 keeps the address of the security control device 10 without discarding it. If the security center 20 does not discard the address of the security control device 10, the security center 20 transmits a UDP packet to the security control device 10 at an arbitrary timing regardless of the reception interval of the UDP packet from the security control device 10. Is possible.

  In the configuration shown in FIG. 12A, transmission of regular and non-periodic UDP packets by the security control apparatus 10 is mainly used for detecting disconnection of the network N1. By holding the address of the security control device 10 in the security center 20, it is possible to transmit a UDP packet from the security center 20, but if the network N1 is not functioning normally, information related to security will be sent at an appropriate timing. You may not be able to send and receive with.

  Therefore, the security control device 10 transmits UDP packets periodically and irregularly to detect disconnection of the network N1, thereby reducing the risk that the UDP packet cannot be transmitted and received at a necessary timing due to an abnormality in the network N1. To do.

  FIG. 12B is a diagram showing a configuration in which the security control device 10 is directly connected to the network N1 and the address thereof is variable. In this configuration, since the address of the security control device 10 may be changed, the security center 20 updates the address as needed when a UDP packet is received from the security control device 10. By updating the address of the security control device 10 at any time in the security center 20, the security center 20 can transmit a UDP packet to the security control device 10.

  In the configuration shown in FIG. 12B, the regular and non-periodic UDP packet transmission by the security control device 10 is used for address update in the security center 20 and disconnection detection of the network N1.

  The security control device 10 periodically and irregularly transmits UDP packets, and updates the address and detects disconnection of the network N1, so that the address of the security control device 10 is unknown and the UDP packet cannot be transmitted. Further, it is possible to reduce a risk that a situation in which a UDP packet cannot be transmitted / received at a necessary timing due to an abnormality in the network N1.

  FIG. 13 is a diagram illustrating a configuration in which the security control device 10 and the security center 20 are connected via a router. In the configuration shown in FIG. 13, the security control device 10 is connected to the local network N1a. A router 40 is interposed between the network N1 and the network N1a.

  The router 40 has an address conversion table, and performs security control by converting a source address and a destination address (network address conversion) of a UDP packet transmitted and received between the security control device 10 and the security center 20. The communication between the device 10 and the security center 20 is relayed. It should be noted that port conversion can be performed as necessary when the address is converted. The router 40 normally holds the address of the security control device 10 for 30 seconds.

  That is, when the security control device 10 transmits a UDP packet to the security center 20, the router 40 converts the address of the security control device 10, which is the transmission source address, to the address of the router 40, and the security center 20. The UDP packet after the conversion is transmitted, and the address of the security control device 10 is registered in the address conversion table. And when 30 seconds pass after registration, the address of the security control apparatus 10 is discarded. If the router 40 receives a UDP packet from the security center 20 before discarding the address, the router 40 converts the destination address to the address of the security control device 10 based on the address conversion table, and converts the destination address to the security control device 10. The UDP packet can be relayed by transmitting the UDP packet.

  In this way, even when the router 40 is involved in communication and holds the address of the security control device 10 only for a predetermined time, the security control device 10 transmits the UDP packet periodically and irregularly so that the router 40 The security center 20 can transmit a UDP packet to the security control device 10 at an arbitrary timing by holding the address of the security control device 10.

  Moreover, since the security control apparatus 10 can detect disconnection of the network N1a and the network N1 by transmitting the UDP packet periodically and irregularly, the UDP packet is required at a timing when the network N1a and the network N1 are abnormal. It is possible to reduce the risk of occurrence of a situation where transmission / reception cannot be performed.

  Further, if the security control device 10 transmits UDP packets periodically and irregularly, the address of the router 40 is updated in the security center 20, so even if the address of the router 40 is changed, the address It is possible to reduce the risk of occurrence of such a situation that the UDP packet cannot be transmitted due to unknown.

  As described above, in the security system according to the present embodiment, the security control device 10 periodically transmits a UDP packet to the security center 20, and the UDP packet to the security center 20 irregularly according to the situation of the facility. Send. Further, when receiving a UDP packet from the security control device 10, the security center 20 holds the transmission source address for a predetermined time, and transmits the UDP packet to the security control device 10 based on the held address. With this configuration, it is possible to improve the real-time property and reliability of communication while suppressing the cost using UDP.

  In addition, in the said Example, in order to simplify description, although the case where abnormality related to invasion like a door and a window was detected was demonstrated, this invention is not limited to this. For example, UDP may be used when notifying the security center 20 of an abnormality such as a fire detection. In addition, a sensor is provided in a device that is regularly used by a resident, such as a room light or an electric kettle, and when the output from the sensor is not detected over a long period of time, notification is made to the security center 20 using UDP. It may be configured.

  In the above embodiment, the case of using UDP has been described as an example. However, the present invention is not limited to UDP, and can be applied to the case of using an arbitrary protocol. In particular, when a low-reliability protocol that does not guarantee the arrival of a packet is used, the reliability can be greatly improved by applying the present invention.

  In the above embodiment, the configuration for switching between the two operation modes of the security mode and the non-security mode has been described. However, a plurality of operation modes for work used when a guard is dispatched may be used as necessary. The operation mode may be selected.

  As described above, the security system and the security method according to the present invention are suitable for improving the real-time property and reliability of communication while suppressing costs.

DESCRIPTION OF SYMBOLS 10 Security control apparatus 11 Display operation part 12 Speaker 14 Sensor 15, 21 First communication part 15a Periodic transmission part 15b Non-periodic transmission part 15c Reception part 16, 22 Second communication part 17, 24 Storage part 17a Last entry / exit date 17b Secret code Number last update date and time 17c System parameter last update date and time 17d Firmware version 18, 25 Control unit 18a Mode change unit 18b Operation guidance notification unit 18c Sensor output acquisition unit 18d Alarm processing unit 18e Communication control unit 20 Security center 21a Reception unit 21b Address data update Unit 21c Response transmission unit 21d Control instruction transmission unit 23 Third communication unit 24a Security control device management data 24b Address data 24c Alarm history data 25a Situation management unit 25b Alarm reception unit 25c Disconnection determination unit 25d Control request processing unit 25e Communication Control unit 30 Terminal device 40 Router N1, N2, N3, N1a Network

Claims (7)

A security control system installed in a predetermined facility acquires information indicating the status of the facility, and transmits the acquired information to a security center,
The security control device
Periodic transmission means for periodically transmitting packets to the security center;
Communication control means for determining whether or not it is necessary to transmit a non-periodic packet to the security center according to the situation of the facility;
Non-periodic transmission means for non-periodically transmitting packets to the security center based on the determination result by the communication control means,
The security center
When a packet is received from the security control device, an address holding unit that holds a source address of the packet for a predetermined time;
A security control device transmission means for transmitting a packet to the security control device based on the address held in the address holding means ,
The security control device transmission means, when receiving a request to release the security based on the remote operation of the user, transmits a security state change instruction corresponding to the request to the security control device,
When the security control device receives an instruction to change the security status, the security control device changes the security status for the predetermined facility,
The security control device notifies the change of the security status when the security status is being monitored and the presence or absence of a person is detected by an entrance / exit sensor provided near the entrance / exit of the predetermined facility. A notification means for performing
The notification means provides a waiting time from when the presence / absence sensor is detected by the doorway sensor until the start of the notification,
In the waiting time, the security control device transmits the non-periodic packet to the security center based on detection of the presence of a person by the entrance / exit sensor, and waits without being transmitted at the security center. A security system characterized by being in a state longer than a time lag for receiving the change instruction based on the remote operation of the user from the security center .   2. The security system according to claim 1, wherein the regular transmission unit, the non-periodic transmission unit, and the security control device transmission unit use a user datagram protocol (UDP).   The security system according to claim 1 or 2, wherein a transmission interval of packets by the periodic transmission unit is shorter than a time during which the address holding unit holds a source address. The informing means does not provide the waiting time when the presence / absence sensor detects that the person is located within a predetermined time after the last reception of the packet from the security center. in the case where the packet person by the entrance sensor in a state where the receiving exceeds a predetermined time is detected to be located, any one of the preceding claims, characterized in that providing the waiting time one Security system described in one . The security system according to any one of claims 1 to 4 , wherein the periodic transmission unit transmits a packet including information indicating the status of the facility to the security center. The security center further includes a disconnection determination unit that determines that a disconnection has occurred with the security control device when the elapsed time since the last reception of the packet from the security control device exceeds a threshold value. The security system according to any one of claims 1 to 5 , wherein A security control device installed in a predetermined facility acquires information indicating the status of the facility, and transmits the acquired information to a security center.
A periodic transmission step in which the security control device periodically transmits packets to the security center;
A step of determining whether or not the security control device needs to transmit a non-periodic packet to the security center according to the situation of the facility;
Non-periodic transmission step in which the security control device performs non-periodic transmission of packets to the security center based on the determination result of the determination step;
When the security center receives a packet from the security control device, an address holding step of holding a source address of the packet for a predetermined time; and
The security center includes a security control device transmission step for transmitting a packet to the security control device based on the address held by the address holding step ;
When the security control device transmission step receives a request for canceling the security based on a remote operation of the user, the security control device change instruction corresponding to the request is transmitted to the security control device,
When the security control device receives an instruction to change the security status, a security status change step for changing the security status for the predetermined facility;
When the security state is being guarded and the presence of a person is detected by an entrance / exit sensor provided in the vicinity of the entrance / exit of the predetermined facility, the security control device notifies the user of a change in the security state. A notification step to perform,
The notification step has a waiting time from when the presence / absence sensor is detected by the entrance / exit sensor until the start of the notification,
In the waiting time, the security control device transmits the non-periodic packet to the security center based on detection of the presence of a person by the entrance / exit sensor, and waits without being transmitted at the security center. A security method characterized by being in a state longer than a time lag of receiving the change instruction based on the remote operation of the user from the security center .

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