JP2016003539A - Electric lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a relay attack on an electric lock system.SOLUTION: An electric lock system comprises: an installation control unit 2 for instructing an electric lock 1 to change over locking/unlocking thereof; an installation switch 4 connected to the installation control unit 2; and a portable apparatus 5 for performing wireless communication with the installation control unit 2. The installation control unit 2 transmits an authentication request in response to an unlocking request input from the installation switch 4 and instructs to change over from a locked state to an unlocked state under the condition that authentication of unique identification information replied from the portable apparatus 5 is successful. The portable apparatus 5 includes a contact feeling unit 13 composed of a biological sensor. The portable apparatus 5 replies to the authentication request under the condition that direct operation for making the contact feeling unit 13 acquire biological unique information is generated and authentication of the acquired biological unique information is successful.

Description

  The present invention relates to an electric lock system provided to switch an electric lock from a locked state to an unlocked state on condition that authentication of the portable device is successful.

  In this type of electric lock system, an installation switch and an installation control unit are generally installed near a door that is locked and unlocked with an electric lock. A wireless communication antenna and an installation switch connected to the installation control unit are arranged outside the room. The installation switch is for manually inputting an electric lock locking / unlocking request. An installation switch is arranged in an area where wireless communication can be performed directly with the installation control unit. The portable device stores the unique identification information and wirelessly communicates with the installation control unit. The portable device is possessed by an authorized person who locks and unlocks the electric lock, for example, a resident of the room. The installation control unit sends an authentication request in response to a lock / unlock request input from the installation switch, and locks / unlocks the electric lock on condition that authentication of the unique identification information returned from the portable device that received the request is successful. (For example, Patent Document 1).

JP 2004-190419 A

  However, with this type of electric lock system, with the recent development of mobile communication, there is a risk of being exposed to a multiple offender attack. That is, the criminal group includes a first portable wireless repeater and a second portable wireless repeater, prepares a relay relay network connecting these portable wireless repeaters, and monitors the going out of authorized persons. When a legitimate authority locks the door with an electric lock and goes out, the criminal (tailing personnel) who possesses the first portable wireless repeater follows the legitimate authority. If it takes a long time for the legitimate authorized person to move away from the door and return from the outside, another criminal (intruder) who possesses the second portable radio repeater operates the installation switch to Enter unlock request and wait in front of you. The installation control unit that has received the unlock request transmits an authentication request. The authentication request arrives at the first portable radio repeater possessed by the tailing personnel by relay relay starting from the second portable radio repeater. The first portable radio repeater transmits the received authentication request. Then, the portable device possessed by the authorized person receives the authentication request, and transmits the unique identification information in response thereto. The unique identification information reaches the second portable wireless repeater in front of the relay relay relay starting from the first portable wireless repeater. The second portable wireless repeater transmits the received unique identification information. Then, the installation control unit receives the unique identification information and instructs the electric lock to unlock (hereinafter, this cooperative attack is referred to as “relay attack”).

  In view of the above background, the problem to be solved by the present invention is to prevent a relay attack on the electric lock system.

  A first invention that solves the above-described problem includes an installation control unit that commands an electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that communicates wirelessly with the installation control unit. The installation control unit transmits an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on the condition that authentication of the unique identification information returned from the portable device is successful. In the electric lock system instructing switching, the portable device has a contact sensation unit that receives a direct operation, and adopts a configuration that switches whether or not a response to the authentication request can be made depending on whether or not the touch sensation unit is directly operated. It is a thing.

  According to the first aspect, it is possible to determine whether or not the authorized person can allow the portable device to respond, and to directly apply the operation to the touch-sensitive unit to reflect the determination on the portable device. For this reason, in an outing situation where a relay attack can be received, a legitimate authorized person can reject the response of the portable device and prevent the relay attack.

  In the first aspect of the invention, the first mode in which the response is disabled is set to the normal state and the response is allowed when there is a direct operation, and the second mode is switched to the response disabled when the response is set to the normal state and the direct operation is performed. Any of these may be adopted.

  For example, the contact sensation unit includes a biometric sensor that acquires biometric specific information, and the portable device generates the direct operation that causes the biometric sensor to acquire the biometric specific information, and the authentication of the acquired biometric specific information is successful. It is good to have a judgment part which permits the above-mentioned response on condition. Here, the living body specific information refers to information indicating physical characteristics inherently possessed by an individual. In this example, a direct operation is performed in which a human body is brought into contact with the touch-sensitive part and biometric information is acquired by the biometric sensor. Therefore, in the situation where the portable device is put in and possessed in the bag or pocket, there is no fear that the response is switched even if another object in the bag accidentally touches the touch-sensitive part. In addition, successful authentication of the biometric information in the determination unit means that it was a direct operation by a legitimate authorized person. Since the response is allowed under this condition, there is no worry that the response can be switched by a third party when the portable device is lost.

  The contact sensation unit may include an operation switch that can be manually switched to determine whether the response is possible. In this example, a direct operation of moving the operation switch by hand is performed. In this example, there is no calculation process for performing verification authentication of the biometric sensor or biometric information, and the touch-sensitive part can be provided in the portable device with a relatively simple implementation. In this example, either the first aspect or the second aspect can be adopted.

  According to a second aspect of the present invention for solving the above-described problem, an installation control unit that commands the electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that wirelessly communicates with the installation control unit. The installation control unit transmits an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on the condition that authentication of the unique identification information returned from the portable device is successful. In the electric lock system for instructing the switching, an installation biosensor that is connected to the installation control unit and acquires biometric specific information is provided, and the installation control unit generates and acquires biospecific information by the installation biosensor. The authentication request is transmitted on the condition that the biometric unique information is successfully authenticated.

  According to the second invention, when the installation switch is operated, the installation biosensor acquires the biometric unique information of the authorized person, and if the authentication is not successful, the authentication request for the unique identification information is made to the portable device. Do not send. That is, even if an intruder who attempts a relay attack operates the installation switch, an authentication request is not transmitted and a relay attack is not established.

  The installation biosensor may be provided separately from the installation switch or may be provided integrally. When provided integrally, the operation of the installation switch and the operation for acquiring the biometric information can be made the same operation.

  In the second invention, the verification process for authenticating the biometric information may be performed by either the installation control unit or the installation biosensor. For example, the arithmetic processing unit of the installation biosensor performs a verification process, and only when the authentication is successful, permits the installation switch to accept input, or permits the installation switch to transmit the unlock request to the installation control unit. In this case, the installation control unit transmits an authentication request on the condition that the acquisition of the biometric unique information and the authentication of the acquired biometric specific information are successful. In addition, if the installation biosensor performs a verification process, notifies the installation control unit of the authentication result, and the installation control unit sends an authentication request only when the authentication is successful, the biometric specific information can be acquired. The authentication request is transmitted on the condition that the generation and the authentication of the acquired biometric information are successful. Also, if the biometric information acquired by the installation biosensor is sent to the installation control unit, and the installation control unit performs a verification process and sends an authentication request only when authentication is successful, An authentication request is transmitted on the condition that acquisition occurs and authentication of the acquired biometric information is successful.

  According to a third aspect of the present invention for solving the above-described problem, an installation control unit that commands the electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that communicates wirelessly with the installation control unit. The installation control unit transmits an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on the condition that authentication of the unique identification information returned from the portable device is successful. And a response to the authentication request when the human detection sensor detects a person leaving the traffic area. And a command transmission unit that commands the portable device to stop the function.

  According to the third invention, the human detection sensor is arranged in a specific traffic area that passes when the authorized person goes out, and the command transmission unit responds to the authentication request from the portable device possessed by the authorized person. The stop of the response function can be commanded. The portable device that has received this command does not respond to an authentication request that is relayed to an outside location. For this reason, the relay attack is not established.

  In a third aspect of the invention, there is provided an installation biosensor that is connected to the installation control unit and acquires biological specific information, and the installation control unit generates and acquires the biometric specific information by the installation biosensor It is preferable to instruct the portable device to restore the response function on the condition that the authentication of information is successful. In this way, only the authorized person who has succeeded in authenticating the biometric unique information can reliably restore the response function.

  When applying 3rd invention to an apartment house, you may set the said person detection sensor and the said command transmission part to either the common part of an apartment house, or an exclusive part.

  In particular, when the human detection sensor and the command transmission unit are installed in the traffic area belonging to a common part of an apartment house, it is unnecessary to install a human detection sensor and a command transmission unit at each house, Relay attacks can be prevented for home residents.

  As described above, any of the first to third inventions can prevent a relay attack on the electric lock system.

Functional block diagram showing the overall configuration of the first embodiment The flowchart which shows the processing content of the determination part of 1st Embodiment. Functional block diagram showing the portable device of the second embodiment Functional block diagram showing the overall configuration of the third embodiment The flowchart which shows the processing content of the installation control part of 3rd Embodiment. Functional block diagram showing the overall configuration of the fourth embodiment The conceptual diagram which shows the system operation | movement when the resident of an apartment house goes out in 4th Embodiment The flowchart which shows the processing content of the command transmission part of 4th Embodiment. The conceptual diagram which shows the system operation | movement when the resident of an apartment house returns home in 4th Embodiment

  As an example of the first invention, an electric lock system according to a first embodiment will be described with reference to FIGS. As shown in FIG. 1, the electric lock system includes an installation control unit 2 that instructs the electric lock 1 to switch between locking and unlocking, installation switches 3 and 4 connected to the installation control unit 2, and an installation control unit 2. And a portable device 5 for wireless communication. The electric lock system further includes an LF transmission unit 6 connected to the installation control unit 2 and an RF reception unit 7 connected to the installation control unit 2. The electric lock 1, the installation control unit 2, the LF transmission unit 6, and the RF reception unit 7 are installed in a building. The installation control unit 2 and each of the devices 1, 3, 4, 6, and 7 are connected by wired signal transmission paths.

  The electric lock 1 shown in the figure is a device that can electrically switch the locking and unlocking of the front door, and switches the operating state to the locked state or the unlocked state in response to a command from the installation control unit 2. It has become.

  The installation control unit 2 shown in the figure stores in the internal memory in advance unique identification information uniquely assigned to each portable device 5 that grants the right to lock and unlock the front door.

  As the installation switches 3 and 4, a locking switch 3 and an unlocking switch 4 are provided. Each installation switch 3 and 4 is operated by a push button method. The operation of pressing the installation switches 3 and 4 is converted into a signal indicating a locking request and an unlocking request, respectively, and input to the installation control unit 2.

  The installation control unit 2 transmits an authentication request in response to the locking request or unlocking request input from the installation switches 3 and 4, and the electric lock 1 is set in accordance with the authentication result of the unique identification information returned from the portable device 5. Judgment is made as to whether or not the lock / unlock can be switched, and the electric lock 1 is instructed to switch from the locked state to the unlocked state or from the unlocked state to the locked state on condition that authentication of the unique identification information is successful.

  In addition, the installation control unit 2 is required to switch the lock and unlocking of the electric lock in advance, such as a PIN authentication unit that performs connection authentication between the electric lock 1 and the installation control unit 2 by matching the pairing code, a buzzer, and a light emitting device It is also possible to appropriately connect or add an alarm control function for notifying the resident.

  The LF transmission unit 6 generates an LF band digital signal (hereinafter referred to as “LF signal”) in which the authentication request transmitted from the installation control unit 2 is stored in a predetermined format, and wireless communication is transmitted from the transmission antenna. It is a processing part.

  The RF receiving unit 7 receives an RF band digital signal (hereinafter referred to as an “RF signal”) transmitted from the portable device 5 in a predetermined format with a receiving antenna, and is stored in the received RF signal. It is a wireless communication processing unit that sends various types of information such as identification information to the installation control unit.

  The portable device 5 shown in the figure includes a locking switch 8, an unlocking switch 9, a control unit 10, an LF receiving unit 11, an RF transmitting unit 12, a contact feeling unit 13, and a determination unit 14.

  Each of the locking switch 8 and the unlocking switch 9 has a push button operated by the holder of the portable device 5. Operations of pressing the locking switch 8 and the unlocking switch 9 are converted into signals indicating a locking request and an unlocking request, respectively, and are input to the control unit 10.

  The LF receiver 11 performs a wireless reception process of receiving an LF signal with a receiving antenna and sending various information such as an authentication request stored in the received LF signal to the controller 10.

  The control unit 10 stores the unique identification information assigned to itself in the internal memory in advance. The control unit 10 transmits pre-registered unique identification information in response to the locking request or the unlocking request input from the locking switch 8 or the unlocking switch 9. In this transmission, the unique identification information and the locking request or unlocking request corresponding to the input described above are transmitted as a set. The control unit 10 responds with unique identification information in response to the authentication request sent from the LF receiving unit 11.

  When the RF transmission unit 12 receives the set and response described above, the RF transmission unit 12 generates an RF signal in which the set and response are stored in a predetermined format, and performs wireless transmission processing emitted from the transmission antenna.

  In general, the LF band is used for transmission from the installation control unit 2 to the portable device 5, and the RF band is used for transmission from the portable device 5 to the installation control unit 2. These frequency bands are used for the purpose of reducing the battery consumption of the portable device 5 while limiting the communication to a communication with a relatively short distance to the communication with high security. That is, in the LF band communication, which is also called a low frequency band of 100 kHz band (mainly 125 kHz), the communication range is relatively short, the transmission power is relatively large, and the induction electromagnetic field is used. It is difficult to be affected by other environments, and is not easily affected by other propagation. On the other hand, RF band communication, which is also referred to as a high frequency band of 300 MHz band (mainly 315 MHz), has a feature that it can transmit to a relatively long distance for transmission power. The radio communication between the installation control unit 2 and the portable device 5 is preferably limited to the communication area, but is not limited to the example shown in the figure. For example, an RF band is used for transmission from the installation control unit 2 to the portable device 5. May be.

  Note that in wireless communication between the installation control unit 2 and the portable device 5, security information such as unique identification information sent by an RF signal is generally stored in an encrypted state and decrypted by the other party. ing.

  The contact sensation unit 13 shown in the figure includes a part that receives a direct operation, and includes a biosensor that acquires bio-specific information during the direct operation. A person carrying the portable device 5 performs a direct operation of causing the touch-sensitive unit 13 to touch a predetermined portion of his / her hand to read the biometric information. The contact sensation unit 13 sends the biometric information acquired by the reading to the determination unit 14.

  The determination unit 14 performs a biometric authentication process in which the biometric unique information sent from the touch sensation unit 13 and biometric unique information registered in advance are collated. The biometric specific information registered in the determination unit 14 is obtained by previously acquiring biometric information of a person who has the right to open and close the front door with a biometric sensor and storing it in the memory of the determination unit 14.

  Since the portable device 5 includes the contact sensation unit 13, information that can be acquired from the hand is used as the biological information. As biometric authentication technology using such biometric unique information, biometric impedance can be adopted as well as generally used fingerprint authentication. When biometric impedance is used, for example, the touch-sensitive part and the biometric authentication process described above can be realized using the technology disclosed in Japanese Patent Application Laid-Open No. 2014-68989.

  The determination unit 14 controls whether or not signal transmission is possible between the control unit 10 and the RF transmission unit 12. Specifically, as shown in FIGS. 1 and 2, the determination unit 14 normally rejects the relay of a signal transmitted from the control unit 10 to the RF transmission unit 12, and the living body from the contact sensation unit 13. Waiting for unique information (standby state). When the biometric information is sent from the touch sensing unit 13 (S1), the determination unit 14 is allowed to relay the signal for a specified time, and receives an authentication request transmitted from the control unit 10 during this period. In this case, the relay is performed to the RF transmitter 12, and when the specified time has elapsed, the standby state is restored (S2, S3). As described above, since the biometric information sent to the determination unit 14 is acquired by the touch sensation unit through a direct operation on the touch sensation unit, the determination unit 14 generates the direct operation and the acquired biometric unique information. The above-mentioned response is allowed on the condition that authentication is successful. That is, the portable device 5 switches whether or not a response to the authentication request can be made according to the presence or absence of the direct operation.

  According to such a first embodiment, a legitimate authorized person registered in the determination unit 14 directly operates the touch-sensitive unit 13 with the portable device 5 in his / her hand, and the installation control unit is within the specified time. Only when the portable device 5 responds to the authentication request from 2, the installation control unit 2 commands the switching of the electric lock 1. Therefore, when a relay attack is attempted, even if an authentication request arrives at the portable device 5 from the radio relay device of the tailing personnel, it is specified after the legitimate authorized person directly operates the contact sensation unit 13 of the portable device 5. A relay attack will not be established except in the case of a very accidental time. Thus, the first embodiment can prevent a relay attack on the electric lock system only by improving the portable device 5. Also, in the situation where the portable device 5 is held in a bag or pocket, even if another object such as the inside of the bag accidentally touches the contact feeling unit 13, there is no occurrence of acquisition of biometric information, and the portable device 5 There is no worry that the response will change. In addition, since the response is permitted under the condition of direct operation by a legitimate authorized person, there is no fear that the response can be switched by a third party when the portable device 5 is lost.

  In the first embodiment, when a portable device receives an LF signal, an appropriate hardware configuration and control program are adopted as long as a response to the LF signal is transmitted with a direct operation by an authorized person as an essential condition. be able to. For example, the determination unit may be implemented as a program executed by the control unit, and may accept the biometric authentication process only for a specified time using the reception of the LF signal of the control unit as a trigger.

  A second embodiment will be described with reference to FIG. Hereinafter, only differences from the first embodiment will be described. 2nd Embodiment changes the touch-sensitive part of the portable device 5 compared with 1st Embodiment. As shown in FIG. 3, the touch sensation unit 20 according to the second embodiment includes an operation switch that can switch manually whether or not to respond to the LF signal. The contact sensation unit 20 shown in the figure has a push button provided at a location different from the locking switch 8 and the unlocking switch 9. Further, the contact sensation unit 20 is an operation switch of a contact that can mechanically open and close the signal transmission path between the control unit 10 and the RF transmission unit 12. Usually, since the touch sensation unit 20 stands by with the signal transmission path open, even if the control unit 10 transmits a response corresponding to the LF signal, it does not reach the RF transmission unit 12. Only when the person carrying the portable device 5 performs a direct operation of pressing the touch sensation unit 20 to close the signal transmission path, the above-mentioned response reaches the RF transmission unit 12. That is, the portable device 5 switches whether or not a response to the authentication request can be made according to the presence or absence of the direct operation.

  According to the second embodiment as described above, the portable device 5 can be used only when the holder of the portable device 5 who is normally a legitimate authority holds it in his / her hand and directly operates the touch-sensitive unit 20. In response to the authentication request from the installation control unit 2 shown in FIG. 1, the installation control unit 2 issues an instruction to switch the locking / unlocking of the electric lock 1 in response to the authentication request. Therefore, when a relay attack is attempted, even if an authentication request arrives at the portable device from the radio relay device of the trailing personnel, a direct operation on the touch-sensitive part 20 of the portable device 5 shown in FIG. 3 occurs. A relay attack will not be established unless it is very accidental. As described above, the second embodiment prevents a relay attack on the electric lock system by adding a manual operation switch to the portable device 5 without adding a high function such as biometric authentication. it can.

  In the second embodiment, the touch-sensitive part may be an operation switch that can be manually switched to determine whether or not to respond to the LF signal, and can be changed to a b-contact switch. Further, the contact sensation unit is not limited to a mechanical switch, and may be a relay switch that electromagnetically switches between opening and closing according to a manual operation. The touch-sensitive part can also be provided as a main power ON / OFF switch of the portable device.

  A third embodiment as an example of the second invention will be described with reference to FIGS. In the third embodiment, the portable device 5 according to the first embodiment is the same as the conventional one without the touch sensation unit and the determination unit, but the first embodiment is provided with an installation biosensor 30 connected to the installation control unit 2. It is different from the embodiment. The installed biosensor 30 is integrated with the unlocking installation switch 4, and acquires biometric information when the installation switch 4 is operated. The installation control unit 2 performs biometric authentication processing for comparing the biometric unique information sent from the installation biometric sensor 30 with biometric unique information registered in advance, and when the biometric authentication is successful, the lock request or unlocking is performed. A determination unit 31 is provided that permits an authentication request to be transmitted in response to a lock request and does not permit an authentication request to be transmitted in response to the lock request or the unlock request when the request fails. For the installation biosensor 30 and the determination unit 31, fingerprint authentication technology or bioimpedance authentication technology can be used.

  Specifically, as shown in FIG. 5, the installation control unit 2 normally waits for an unlocking request from the installation switch 4 (standby state) when in the locked state. When the installation switch 4 is operated, the unlock request corresponding to the operation and the biometric information acquired at the time of the operation are sent as a set to the installation control unit 2 (S11). Receiving this, the determination means 31 of the installation control unit 2 compares the sent biometric specific information with the registered biometric specific information, and if there is a match among the registered biometric specific information, determines that the authentication is successful, If not, it is determined that the authentication has failed (S12). If the authentication is successful, the installation control unit 2 transmits an authentication request (S13), and the LF transmission unit 6 that receives the request transmits an LF signal. On the other hand, in the case of authentication failure, the installation control unit 2 ignores the lock request or unlock request of the set, and does not transmit an authentication request. If the authentication is successful, the installation control unit 2 waits for reception of the RF signal, and when receiving the RF signal within a specified time, sends an instruction corresponding to the lock request or unlock request to the electric lock 1 (S14 to S14). S16). When the installation control unit 2 cannot receive the RF signal within the specified time, the installation control unit 2 transmits an authentication request again, and the LF transmission unit 6 retransmits the LF signal (retransmission processing). The installation control unit 2 returns to the standby state when it cannot receive the RF signal even after repeating the retransmission process a predetermined number of times (S14, S17).

  As described above, according to the third embodiment, the installation control unit 2 transmits an authentication request on the condition that the biometric unique information is acquired by the installation biometric sensor 30 and the authentication is successful by the determination means for the acquired biometric specific information. It will be. Therefore, according to the third embodiment, even if an intruder who attempts a relay attack operates the installation switch, the installation control unit 2 does not transmit an authentication request, and the relay attack is not established.

  In the third embodiment, it is essential that the biometric information is acquired by the installed biosensor and the biometric authentication is successfully performed by the determination unit as the transmission condition of the LF signal corresponding to the locking or unlocking operation given to the installation switch. As long as it is, an appropriate hardware configuration and control program can be adopted. For example, the essential condition may be satisfied by providing a determination unit integrally with the installation biosensor and the installation switch so that a lock request or an unlock request is not sent to the installation control unit when biometric authentication fails. it can.

  A fourth embodiment as an example of the third invention will be described with reference to FIGS. In the electric lock system according to the third embodiment, the fourth embodiment further includes a human detection sensor 40 and a command transmission unit 41. As shown in FIGS. 6 and 7, in the fourth embodiment, the electric lock system according to the third embodiment is applied to each house of an apartment house such as a condominium, and the common entrance / exit belonging to the common part of the apartment house is opened / closed. The person detection sensor 40 and the command transmission part 41 are installed in the vicinity of the automatic door 42 to perform the opening control of the automatic door 42 using these. In addition, in FIG. 6, only the principal part is illustrated about the portable device 5 and the building side equipment of the electric lock system provided in each house.

  Specifically, as shown in FIGS. 6 and 7, the human detection sensor 40 detects a person entering and exiting a specific traffic area. In the figure, a specific traffic area is set in a site passage located outside the automatic door 42. The human detection sensor 40 and the command transmission part 41 are installed on the in-site passage. The human detection sensor 40 outputs a determination result as to whether a person approaches the sensor unit or a person who moves away from the sensor unit based on an output signal of the sensor unit that detects the presence of a person. As long as the human detection sensor 40 can acquire information that can determine whether a person is approaching or leaving, an appropriate method using infrared rays, ultrasonic waves, visible light, or the like can be used. The human detection sensor 40 sends the determination result of whether it is a person approaching or leaving a person to the command transmission part 41 at every detection.

  The command transmission unit 41 has the same LF transmission unit, RF reception unit, and installation control unit as in the first embodiment. The command control unit 2 instructs the installation control unit 2 to stop / restore the response function to the portable device 5. 43 is added as a program. As shown in FIG. 6 and FIG. 8, when the human detection sensor 40 detects a person who enters the traffic area, that is, the approaching person, the command transmission unit 41 informed of the person sends an authentication request and The LF signal including the response function restoration command is transmitted from the LF transmitter 6 to the portable device 5 (S21 to S23). On the other hand, when the person detection sensor 40 detects a person leaving the traffic area, that is, the above-mentioned person who leaves, the command transmission unit 41 notified of this includes a command to stop the response function for the authentication request. The LF signal is transmitted from its own LF transmitter 6 to the portable device 5 (S21, S24). In addition, the command transmission part 41 also has a function which sends an open command to an automatic door, when the authentication of the unique identification information responded with the RF signal from the portable device 5 is successful (S25 to S28).

  The control unit 10 of the portable device 5 is equipped with a response ON / OFF means 44 for stopping or restoring the response function with respect to the LF signal in accordance with the instruction to restore or stop the response function included in the LF signal. .

  The installation control unit 2 of the electric lock system provided in each home provides the portable device 5 on the condition that acquisition of the biometric information by the self-installed biometric sensor 30 and successful authentication by the self-determination means 31 of the acquired biometric information. A response command for restoring the response function and an authentication request are transmitted.

  According to such 4th Embodiment, as shown in FIG. 7, when the resident who carries the portable device 5 goes out, the person detection sensor 40 detects approach to a resident's automatic door, and the output of this detection Upon receiving the signal, the command transmission unit 41 commands the portable device 5 to restore the response function and request an authentication with the LF signal. At this time, since the response function of the portable device 5 is normally alive, this revival command has no special meaning. Since the command transmission unit 41 succeeds in authenticating the unique identification information responded by the RF signal from the portable device 5, the command transmission unit 41 transmits an opening command to the automatic door 42. When a resident who has gone out of the automatic door 42 walks away from the human detection sensor 40, the human detection sensor 40 detects this separation, and the command transmission unit 41 that receives the output signal of this detection, Command the LF signal to stop the response function. The portable device 5 that has received this command stops the response function to the LF signal. Therefore, even if the portable device 5 receives the authentication request relayed to the destination, the portable device 5 does not respond to the authentication request. For this reason, the relay attack is not established. As described above, according to the fourth embodiment, it is possible to prevent relay attacks on residents of each house while making it unnecessary to install the human detection sensor 40 and the command transmission unit 41 in each house.

  On the other hand, as shown in FIG. 9, when the resident who holds the portable device 5 returns home through the automatic door 42, the human detection sensor 40 and the command transmission unit 41 are configured to output signals and commands as in the case of going out. To emit. For this reason, when the resident reaches the front door of the home, the response function of the portable device 5 is normally stopped. When the resident operates the installation switch 4 at home, acquisition of biometric information by the installation biosensor 30 occurs. Upon receiving these unlocking requests and biometric specific information, the installation control unit 2 sends a response function restoration command and authentication request to the portable device 5 due to the success of the biometric authentication, and the LF signal including these sets is transmitted to the portable device 5. To reach. As a result, the portable device 5 restores the response function and transmits a response to the authentication request using an RF signal. As a result, the entrance door at home is unlocked. As described above, in the fourth embodiment, the response function can be reliably restored only to the authorized person who has succeeded in the authentication of the biometric information.

  In addition, you may make it install a person detection sensor and a command transmission part for every electric lock system of each house instead of on the passage of a common part like 4th Embodiment. Moreover, when restoring the response function to the portable device of the resident who has returned home in each subsystem, it is possible to omit biometric authentication from the conditions. In addition, the human detection sensor not only detects entry / exit to a specific traffic area, but also has a high function capable of detecting whether it is going out of the building or out of the building or going out of the building. If so, the human detection sensor sends information indicating the escape direction to the command transmission unit, and the command transmission unit determines whether to instruct the portable device to stop or restore the response function according to the escape direction. You may do it. In addition, the portable device is provided with a vibrator means and a notification sound generating means, and when the response ON / OFF means restores the response function, an operating command is sent to the vibrator means etc. to inform the owner of the portable device that the response function has been restored. You may do it.

  The technical scope of the present invention is not limited to the above-described embodiments, and includes all modifications within the scope of the technical idea based on the description of the scope of claims.

DESCRIPTION OF SYMBOLS 1 Electric lock 2 Installation control part 3, 4 Installation switch 5 Portable device 6 LF transmission part 7 RF reception part 10 Control part 11 LF reception part 12 RF transmission part 13, 20 Contact feeling part 14 Determination part 30 Installation biosensor 31 Determination means 40 Person detection sensor 41 Command sending part 42 Automatic door 43 Command means 44 Response ON / OFF means

Claims (7)

An installation control unit that commands the electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that communicates wirelessly with the installation control unit,
The installation control unit sends an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on condition that the unique identification information returned from the portable device is successfully authenticated. In the electric lock system that orders
The electric lock system according to claim 1, wherein the portable device has a touch-sensitive part that receives a direct operation, and switches whether or not a response to the authentication request is possible depending on whether or not the touch-sensitive part is directly operated. The contact sensation part is composed of a biosensor that acquires bio-specific information,
The electric lock according to claim 1, wherein the portable device includes a determination unit that permits the response on condition that the direct operation of causing the biometric sensor to acquire the biometric specific information and the authentication of the acquired biometric specific information are successful. system.   The electric lock system according to claim 1, wherein the contact sensation unit includes an operation switch capable of manually switching whether the response is possible. An installation control unit that commands the electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that communicates wirelessly with the installation control unit,
The installation control unit sends an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on condition that the unique identification information returned from the portable device is successfully authenticated. In the electric lock system that orders
Connected to the installation control unit, provided with an installation biosensor for acquiring biometric information,
The electric lock system, wherein the installation control unit transmits the authentication request on the condition that generation of biometric information by the installation biometric sensor is generated and authentication of the acquired biometric information is successful. An installation control unit that commands the electric lock to switch between locking and unlocking, an installation switch connected to the installation control unit, and a portable device that communicates wirelessly with the installation control unit,
The installation control unit sends an authentication request in response to the unlocking request input from the installation switch, and switches from the locked state to the unlocked state on condition that the unique identification information returned from the portable device is successfully authenticated. In the electric lock system that orders
A human detection sensor that detects a person entering and exiting a specific traffic area;
A command transmission unit that instructs the portable device to stop a response function to the authentication request when the human detection sensor detects a person leaving the traffic area;
An electric lock system comprising: Connected to the installation control unit, provided with an installation biosensor for acquiring biometric information,
The electric lock according to claim 5, wherein the installation control unit instructs the portable device to restore the response function on the condition that the biometric information is acquired by the installation biometric sensor and the authentication of the acquired biometric information is successful. system.   The electric lock system according to claim 5 or 6, wherein the human detection sensor and the command transmission unit are installed in the traffic area belonging to a common part of an apartment house.

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