JP2018145694A - Electric lock system and electric lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric lock system and an electric lock device which are capable of improving convenience.SOLUTION: An electric lock device 2, which has a lock side communication unit 22 for conducting a wireless communication, locks or unlocks a doorway of a building. A key device 3 has a key side communication unit 32 that is capable of communicating with the lock side communication unit 22. A measurement unit 33 measures the radio field intensity of a received radio wave received by either one of the lock side communication unit 22 and the key side communication unit 32 from the other of the lock side communication unit 22 and the key side communication unit 32. A determination unit 311 determines whether or not the measurement value of the measurement unit 33 is equal to or greater than a predetermined threshold value. A lock side control unit 21, which is provided in the electric lock device 2, performs control to unlock the doorway if the determination unit 311 determines that the measurement value of the measurement unit 33 is equal to or greater than the threshold value. If the determination unit 311 determines that the measurement value of the measurement unit 31 is less than the threshold value, the notification unit 35 makes a notification to a user who possesses the key device 3.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to an electric lock system and an electric lock device, and more particularly, an electric lock system and an electric lock device that enable unlocking of an electric lock device by transmitting a signal from the key device to the electric lock device. About.

  Conventionally, an electric lock system that electrically locks or unlocks a lock provided on a door of a building has been provided (see, for example, Patent Document 1). The electric lock system described in Patent Document 1 includes an electric lock device and a key device. The electric lock device includes a detection unit, a first communication unit, a drive unit that drives the lock, and a control unit. The key device includes a memory and a second communication unit. Authentication information necessary for locking or unlocking the lock is registered in advance in the memory of the key device. Authentication information assigned to the key device is registered in advance in the memory of the control unit of the electric lock device.

  The control unit collates the authentication information acquired from the key device by performing wireless communication between the first communication unit and the second communication unit, and the authentication information registered in advance in the memory. Waiting for a lock. Then, when a detection signal is input from the detection unit while waiting for unlocking, the control unit controls the drive unit to unlock the lock.

JP 2006-30894 A

  In the electric lock system described in Patent Document 1, the first communication unit of the electric lock device and the second communication unit of the key device communicate with each other wirelessly (radio waves). 2 The radio field intensity of radio waves received by the communication unit may be reduced. In this state, when the user performs an operation of unlocking the electric lock device using the key device, there is a high possibility that the unlocking will fail and the convenience for the user is reduced.

  An object of the present invention is to provide an electric lock system and an electric lock device that can improve convenience.

  An electric lock system according to an aspect of the present invention includes an electric lock device, at least one key device, a measurement unit, a determination unit, a control unit, and a notification unit. The electric lock device includes a lock side communication unit that performs wireless communication, and locks or unlocks a building entrance. The key device includes a key side communication unit capable of communicating with the lock side communication unit. The measuring unit measures a radio field intensity of a received radio wave received by one of the lock side communication unit and the key side communication unit from the other of the lock side communication unit and the key side communication unit. The determination unit determines whether the measurement value of the measurement unit is equal to or greater than a predetermined threshold value. The control unit is provided in the electric lock device, and performs control to unlock the entrance when the determination unit determines that the measurement value of the measurement unit is equal to or greater than the threshold value. The notification unit notifies the user who owns the key device when the determination unit determines that the measurement value of the measurement unit is less than the threshold value.

  An electric lock device according to an aspect of the present invention is an electric lock device used in the electric lock system, and includes the lock-side communication unit and the control unit.

  ADVANTAGE OF THE INVENTION According to this invention, the electric lock system and electric lock apparatus which can improve the convenience can be provided.

FIG. 1 is a block diagram of an electric lock system according to an embodiment of the present invention. FIG. 2 is an explanatory view showing an example of use of the above electric lock system. FIG. 3 is a sequence diagram for explaining the normal operation of the electric lock system. FIG. 4 is a sequence diagram for explaining the operation of the above-described electric lock system when fading occurs. FIG. 5 is a sequence diagram for explaining an operation of the electric lock system according to the embodiment of the present invention in a normal state. FIG. 6 is a sequence diagram for explaining the operation of the above-described electric lock system when fading occurs.

  The embodiment described below is only one of various embodiments of the present invention. Embodiments of the present invention are not limited to the following embodiments, and may include other embodiments. The following embodiments can be variously changed according to the design or the like as long as they do not depart from the technical idea of the present invention.

(1) Outline of Electric Lock System As shown in FIGS. 1 and 2, the electric lock system 1 according to the present embodiment includes an electric lock device 2 and a key device 3.

  The electric lock device 2 is a device that locks the entrance 11 of the building 10. The electric lock device 2 of the present embodiment locks the doorway 11 by operating a lock device that locks the doorway 11. The “entrance / exit” of the building 10 here is a door or window that separates the inside of the building 10 (inside the house 12) from the outside (outside the house 13), for example, an entrance door, a doorway, or a sweeping window. . The electric lock device 2 is installed at the doorway 11. Here, the electric lock device 2 is configured to be able to communicate with the key device 3, and switches between a locked state in which the doorway 11 is locked and an unlocked state in which the doorway 11 is unlocked by communication with the key device 3. Do it electrically.

  The key device 3 has a communication function with the electric lock device 2. In the present embodiment, the communication method between the key device 3 and the electric lock device 2 is wireless communication using radio waves as a medium. The key device 3 is battery-driven and configured to an appropriate size so that it can be carried by the user 40.

  This embodiment demonstrates as an example the case where the building 10 is a detached house. The user 40 is a person who possesses (carries) the key device 3 among the residents of the building 10 (detached house).

  When the user 40 performs a specific action (unlocking operation) of pressing the operation button 231 disposed on the outside door 13 side of the entrance 11, the electric lock device 2 communicates with the key device 3 and is stored in the key device 3 in advance. The key device 3 transmits the generated key ID (Identification) to the electric lock device 2. The electric lock device 2 unlocks the doorway 11 when the key ID of the key device 3 is successfully authenticated. That is, since the electric lock device 2 performs an unlocking operation for switching from the locked state to the unlocked state by communication with the key device 3, the user 40 can open the entrance 11 and enter the house 12. On the other hand, when the authentication of the key ID of the key device 3 fails, the electric lock device 2 does not unlock the entrance / exit 11, so the electric lock device 2 does not allow a person who does not have the regular key device 3 to enter the house 12. The system 1 is configured.

  The unlocking operation by the electric lock device 2 as described above is performed at least when the user 40 is outside the home 13, that is, when the user 40 returns home, and when the user 40 is in the home 12, that is, when the user 40 is out. Done on one side.

  In the present embodiment, the unlocking operation by the electric lock device 2 is performed both when the user 40 returns home and when he goes out.

  When the user 40 returns home, the user 40 located outside the home 13 approaches the entrance 11 and operates the operation button 231 disposed on the outside 13 side of the entrance 11. In this state, the key device 3 possessed by the user 40 is approaching the entrance / exit 11 to the extent that radio waves for communication from the electric lock device 2 can reach, so that the key device 3 communicates with the electric lock device 2. The doorway 11 can be unlocked.

  When the user in the home 12 goes out, the user in the home 12 approaches the entrance 11 and operates the operation button 232 arranged on the home 12 side of the entrance 11. In this state, the key device 3 possessed by the user 40 is approaching the entrance / exit 11 to the extent that radio waves for communication from the electric lock device 2 can reach, so that the key device 3 communicates with the electric lock device 2. The doorway 11 can be unlocked.

  Moreover, although detailed description is abbreviate | omitted in this embodiment, the electric lock apparatus 2 can also perform the locking operation which switches the entrance / exit 11 from an unlocked state to a locked state by communicating with the key apparatus 3. FIG. That is, when a specific action (locking operation) for pressing the operation button 231 or 232 is performed in a state where the doorway 11 is unlocked, the electric lock device 2 communicates with the key device 3 and communicates with the key device 3. When the key ID is successfully authenticated, the doorway 11 is locked.

(2) Configuration of Key Device As shown in FIG. 1, the key device 3 according to the present embodiment includes a key side control unit 31, a key side communication unit 32, a measurement unit 33, a storage unit 34, and a notification unit. 35. The key device 3 further includes a portable case 36 that houses a key side control unit 31, a key side communication unit 32, a measurement unit 33, a storage unit 34, and a notification unit 35. The key device 3 operates by receiving power supply from, for example, a secondary battery housed in the case 36.

  The key side communication unit 32 is configured to be able to communicate with the electric lock device 2. A communication method between the key side communication unit 32 and the electric lock device 2 (lock side communication unit 22) is, for example, wireless communication using radio waves such as Bluetooth (registered trademark) as a medium. In the present embodiment, the key device 3 not only transmits a signal to the electric lock device 2, but also receives a signal such as a response signal (ACK: ACKnowledgement) from the electric lock device 2 (lock side communication unit 22). . Therefore, the key side communication unit 32 has a signal transmission function and a reception function, and performs bidirectional communication with the lock side communication unit 22.

  The measuring unit 33 measures the received signal strength indicator (RSSI) of the received radio wave received from the lock side communication unit 22 by the key side communication unit 32.

  In the present embodiment, the key-side control unit 31 is realized by a microcomputer having a CPU (Central Processing Unit) and a memory. In other words, the computer functions as the key-side control unit 31 by the CPU executing the program stored in the memory. In the present embodiment, the key-side control unit 31 has the function of the determination unit 311. Here, the program is recorded in advance in the memory of the microcomputer, but may be provided by being recorded through a telecommunication line such as the Internet or a recording medium such as a memory card.

  The determination unit 311 determines whether or not the measurement value R1 of the measurement unit 33 is greater than or equal to a predetermined threshold value Rth. The predetermined threshold value Rth is a state in which the key device 3 is in the state where the key device 3 exists at a location that is a predetermined operable distance (for example, about several meters) from the electric lock device 2 in the house 12 or outside the house 13. It is set to a value corresponding to the radio field intensity of the received radio wave received from the lock device 2. Here, in each of the in-home 12 and the out-of-home 13, an area where the distance from the electric lock device 2 provided at the entrance / exit 11 is not more than the operable distance can be unlocked and locked using the key device 3. Operation area 14 (see FIG. 2).

  The storage unit 34 includes, for example, a nonvolatile memory such as an EEPROM (Electrically Erasable and Programmable Read Only Memory) or a flash memory. The storage unit 34 stores a key ID unique to the key device 3 and the like.

  The notification unit 35 is a display device such as an LED, a speaker that outputs sound, or a vibration motor that generates vibration. The notification unit 35 notifies the user 40 with light, sound, or vibration.

  The key device 3 of the present embodiment is configured by a general-purpose information terminal such as a smartphone, for example. When the key device 3 is composed of a general-purpose information terminal such as a smartphone, the information terminal installs dedicated application software and starts the application software, whereby the CPU of the information terminal is used as the key-side control unit 31 and the determination unit 311. Make it work. In other words, the application software is a program for causing a computer (information terminal) to function as the key side control unit 31 and the determination unit 311 in the key device 3. According to this configuration, there is an advantage that it is not necessary to use the dedicated key device 3. The program may be provided through an electric communication line such as the Internet, or recorded in a recording medium such as a memory card, or may be recorded in advance in a memory of a computer (information terminal).

(3) Configuration of Electric Lock Device As shown in FIG. 1, the electric lock device 2 according to the present embodiment includes a lock side control unit 21, a lock side communication unit 22, an operation unit 23, and a lock drive unit 24. And a storage unit 25.

  The electric lock device 2 is built in, for example, a door (for example, an entrance door) serving as an entrance / exit 11 (see FIG. 2). The electric lock device 2 may operate by receiving power supply from an external power source such as a commercial power source, or may be battery-driven.

  The lock side communication unit 22 includes a communication module that performs communication using the same communication method as the key side communication unit 32 of the key device 3, and is configured to be able to communicate with the key side communication unit 32. As described above, since the lock-side communication unit 22 and the key device 3 (key-side communication unit 32) communicate bidirectionally, the lock-side communication unit 22 has a signal transmission function and a reception function. .

  The operation unit 23 includes, for example, an operation button 231 provided on the outside entrance 13 side of the entrance 11 and an operation button 232 provided on the interior 12 side of the entrance 11. The operation unit 23 has a function of accepting an operation performed by the user to lock or unlock the doorway 11. In the present embodiment, the operation performed by the user using the operation unit 23 to lock or unlock the doorway 11 is an action performed by the user on the electric lock device 2 to lock or unlock the doorway 11. This behavior is called specific behavior. When the operation unit 23 (the operation button 231 or the operation button 232) receives the operation of the user 40, an operation signal is output from the operation unit 23 to the lock side control unit 21.

  In this embodiment, the lock side control unit 21 is realized by a microcomputer having a CPU and a memory. The computer functions as the lock control unit 21 by the CPU executing the program stored in the memory. In the present embodiment, the lock control unit 21 has functions such as an authentication unit 211 and a detection unit 212. Here, the program is recorded in advance in the memory of the microcomputer, but may be provided by being recorded through a telecommunication line such as the Internet or a recording medium such as a memory card.

  Based on the operation signal input from the operation unit 23, the detection unit 212 detects a specific action that the user intends to lock or unlock the doorway 11. That is, when an operation signal is input from the operation unit 23, the detection unit 212 detects that the user has performed a specific action.

  In the authentication unit 211, at least one registration ID is registered (stored). The registration ID corresponds to the key ID of the key device 3. For example, when each resident of the building 10 has an individual key device 3, that is, when the electric lock system 1 includes a plurality of key devices 3, the authentication unit 211 includes the plurality of key devices. A plurality of registration IDs corresponding to the key ID 3 are registered.

  The authentication unit 211 causes the lock side communication unit 22 to receive a signal (ID signal) including the key ID from the key device 3 (key side communication unit 32). When the lock unit communication unit 22 receives the ID signal, the authentication unit 211 performs a key ID authentication process by comparing the key ID included in the ID signal with the registered ID registered in the authentication unit 211. Run.

  In this embodiment, when the authentication unit 211 succeeds in the authentication of the key ID, the lock side control unit 21 controls the lock driving unit 24 to unlock or lock the doorway 11.

  The lock drive unit 24 switches between the locked state and the unlocked state of the doorway 11 by operating a lock device installed at the doorway 11 in accordance with a control signal input from the lock side control unit 21. In the present embodiment, the electric lock device 2 and the lock device are configured separately, but the electric lock device 2 may include a lock device.

(4) Operation Next, in the electric lock system 1 according to the present embodiment, the operation when the user 40 located outside the home 13 returns home will be described with reference to FIGS. 3 and 4.

  First, the operation of the electric lock system 1 when the radio wave intensity of the received radio wave between the electric lock device 2 and the key device 3 does not decrease due to fading or the like when the user 40 returns home will be described with reference to FIG. .

  The detection unit 212 of the electric lock device 2 constantly monitors the presence / absence of an operation signal from the operation unit 23 (that is, the presence / absence of a specific action of the user 40) (S1).

  When the user 40 holding the key device 3 approaches the doorway 11 outside the house 13 and operates the operation button 231, an operation signal is input from the operation unit 23 to the lock-side control unit 21. When the detection unit 212 of the lock side control unit 21 determines that an operation has been performed using the operation unit 23 based on the operation signal input from the operation unit 23 (Yes in S1), the lock side control unit 21 locks. An advertising packet is transmitted from the side communication unit 22 (S2).

  The advertising packet transmitted from the lock side communication unit 22 is received by the key side communication unit 32 of the key device 3 possessed by the user 40. When the key side communication unit 32 receives the advertising packet, the measuring unit 33 measures the radio field intensity of the received signal (advertisement packet) received by the key side communication unit 32 (S3). That is, when the detection unit 212 of the electric lock device 2 detects a specific action, the key-side communication unit 32 receives the advertising packet transmitted from the lock-side communication unit 22, and determines the radio wave intensity of the received radio wave. The measurement part 33 of the above measures.

  Then, the determination unit 311 compares the measured value R1 of the measurement unit 33 with the predetermined threshold value Rth. When there is no drop in the radio field intensity of the received radio wave due to fading or the like, the key device 3 exists in the operation area 14, and therefore the determination unit 311 determines that the measurement value R1 of the measurement unit 33 is equal to or greater than the threshold value Rth ( S4). Here, since the determination unit 311 of the key device 3 compares the radio wave intensity (measured value R1) of the received radio wave with the threshold value Rth, depending on the characteristics of the key side communication unit 32 on the key device 3 side. It is possible to determine by setting the threshold value Rth.

  When the determination unit 311 determines that the measurement value R1 of the measurement unit 33 is equal to or greater than the threshold value Rth, the key-side control unit 31 transmits a connection request signal from the key-side communication unit 32 to the electric lock device 2 (S5). .

  When the lock-side communication unit 22 of the electric lock device 2 receives the connection request signal from the key device 3, the lock-side control unit 21 starts authentication communication for authenticating the key device 3 (S6). When starting the authentication communication, the lock side control unit 21 transmits a request signal for requesting the key ID of the key device 3 from the lock side communication unit 22 to the key device 3. When the key side communication unit 32 receives the request signal, the key side control unit 31 reads the key ID from the storage unit 34 and transmits an ID signal including the key ID from the key side communication unit 32 to the electric lock device 2. When the lock side communication unit 22 receives the ID signal, the authentication unit 211 of the lock side control unit 21 collates the key ID included in the ID signal with the registered ID registered in the authentication unit 211, thereby ID authentication processing is executed. When the authentication of the key ID by the authentication unit 211 is successful, the lock-side control unit 21 outputs a control signal to the lock drive unit 24, and drives the lock device to drive the lock device 24 so that the doorway 11 is unlocked. (S7).

  As described above, the electric lock device 2 performs an unlocking operation for switching the doorway 11 from the locked state to the unlocked state by communication with the key device 3, so that the user 40 can open the doorway 11 and enter the home 12. it can.

  Next, the operation of the electric lock system 1 when the radio wave intensity of the received radio wave between the electric lock device 2 and the key device 3 temporarily decreases due to fading or the like will be described with reference to FIG. Here, in the state where the key device 3 exists in the operable area, the radio wave intensity of the received radio wave received by the key device 3 is lower than the threshold value Rth, but the electric lock device 2 and the key device 3 Assume that wireless communication is possible between the two.

  The detection unit 212 of the electric lock device 2 constantly monitors the presence / absence of an operation signal from the operation unit 23 (that is, the presence / absence of a specific action of the user 40) (S11).

  When the user 40 holding the key device 3 approaches the doorway 11 outside the house 13 and operates the operation button 231, an operation signal is input from the operation unit 23 to the lock-side control unit 21. When the detection unit 212 of the lock side control unit 21 determines that an operation has been performed using the operation unit 23 based on an operation signal input from the operation unit 23 (Yes in S11), the lock side control unit 21 locks the lock side control unit 21. An advertising packet is transmitted from the side communication unit 22 (S12).

  The advertising packet transmitted from the lock side communication unit 22 is received by the key side communication unit 32 of the key device 3 possessed by the user 40. When the key side communication unit 32 receives the advertising packet, the measurement unit 33 measures the radio field intensity of the received signal (advertisement packet) received by the key side communication unit 32 (S13). That is, when the detection unit 212 of the electric lock device 2 detects a specific action, the key-side communication unit 32 receives the advertising packet transmitted from the lock-side communication unit 22, and determines the radio wave intensity of the received radio wave. The measurement part 33 of the above measures.

  Then, the determination unit 311 compares the measured value R1 of the measurement unit 33 with the predetermined threshold value Rth. Here, it is assumed that the radio wave intensity of the received radio wave temporarily drops due to fading or the like, and the measurement value of the measurement unit 33 falls below the threshold value Rth. At this time, the determination unit 311 determines that the measurement value of the measurement unit 33 is less than the threshold value Rth (S14), and the key-side control unit 31 causes the notification unit 35 to perform a notification operation (S15). The notification unit 35 changes the display state of a display device such as an LED, outputs a notification sound (for example, a beep sound) from a speaker, or vibrates the case 36 of the key device 3 with a vibration motor. Perform notification action. By performing such a notification operation, the notification unit 35 notifies the user 40 possessing the key device 3 that the reception intensity is less than the threshold value Rth.

  When the user 40 receives the notification operation of the notification unit 35 and determines that the reception intensity of the received signal (that is, the measurement value R1 of the measurement unit 33) is less than the threshold value Rth, the user 40 takes out the key device 3 from, for example, a bag. Or changing the direction of the key device 3 to change the reception environment of the key device 3.

  When the lock side communication unit 22 cannot receive the response signal from the key device 3, the lock side control unit 21 of the electric lock device 2 causes the advertising communication packet to be transmitted again from the lock side communication unit 22 after a predetermined waiting time has elapsed. (S16).

  The advertising packet transmitted from the lock side communication unit 22 is received by the key side communication unit 32 of the key device 3, and the measurement unit 33 measures the radio wave intensity of the received signal (advertisement packet) received by the key side communication unit 32. (S17).

  When the user 40 changes the position and orientation of the key device 3 or the user 40 approaches the electric lock device 2 (entrance / exit 11), the communication environment between the electric lock device 2 and the key device 3 may be improved. High nature. At this time, since the key device 3 exists in the operation area 14, it is assumed that the measurement value of the measurement unit 33 is equal to or greater than the threshold value Rth.

  When the determination unit 311 determines that the measurement value R1 of the measurement unit 33 is equal to or greater than the threshold value Rth (S18), the key-side control unit 31 sends a connection request signal from the key-side communication unit 32 to the electric lock device 2. Transmit (S19).

  When the lock side communication unit 22 of the electric lock device 2 receives the connection request signal from the key device 3, the lock side control unit 21 starts authentication communication for authenticating the key device 3 (S20). When starting the authentication communication, the lock side control unit 21 transmits a request signal for requesting the key ID of the key device 3 from the lock side communication unit 22 to the key device 3. When the key side communication unit 32 receives the request signal, the key side control unit 31 reads the key ID from the storage unit 34 and transmits an ID signal including the key ID from the key side communication unit 32 to the electric lock device 2. When the lock side communication unit 22 receives the ID signal, the authentication unit 211 of the lock side control unit 21 collates the key ID included in the ID signal with the registered ID registered in the authentication unit 211, thereby ID authentication processing is executed. When the authentication of the key ID by the authentication unit 211 is successful, the lock-side control unit 21 outputs a control signal to the lock drive unit 24, and drives the lock device to drive the lock device 24 so that the doorway 11 is unlocked. (S21).

  Thus, when the radio wave intensity of the received radio wave (measured value R1 of the measurement unit 33) at the key device 3 is less than the threshold value Rth due to fading or the like, the notification unit 35 of the key device 3 performs a notification operation. . Based on the notification operation by the notification unit 35, the user 40 can grasp that the radio wave intensity of the received radio wave (measured value R <b> 1 of the measurement unit 33) at the key device 3 is less than the threshold value Rth. Therefore, the user 40 can improve the communication environment between the electric lock device 2 and the key device 3 by changing the position and orientation of the key device 3 or approaching the electric lock device 2. Thereafter, a communication error between the electric lock device 2 and the key device 3 is less likely to occur. Thereby, the probability that the unlocking operation and the locking operation of the entrance / exit 11 using the key device 3 will be high, and the usability of the electric lock system 1 can be improved.

(5) Modified Examples The electric lock systems according to modified examples of the above embodiment are listed below. In addition, each structure of the modified example demonstrated below is applicable in combination with each structure demonstrated in the said embodiment suitably.

(5.1) Modification 1
In the electric lock system 1 of the above embodiment, the key device 3 includes the measurement unit 33 and the determination unit 311. However, in the electric lock system of Modification 1, the electric lock device 2 includes the measurement unit and the determination unit. . The electric lock system of Modification 1 is different from the above embodiment in that the electric lock device 2 includes a measurement unit and a determination unit, and the same reference numerals are given to components common to the above embodiment, The description is omitted.

  In this case, the measurement unit of the electric lock device 2 measures the radio field intensity of the received radio wave received by the lock side communication unit 22. The determination unit of the electric lock device 2 determines whether or not the measurement value of the measurement unit is greater than or equal to a predetermined threshold value. Then, if the measurement value of the measurement unit is less than the threshold value, the lock side control unit 21 of the electric lock device 2 transmits a radio signal including a control signal for causing the notification unit 35 of the key device 3 to perform a notification operation. Then, the key is transmitted from the lock side communication unit 22 to the key device 3, and the notification unit 35 of the key device 3 performs a notification operation.

  In the electric lock system 1 according to the first modification, the operation when the user 40 who is outside the home 13 returns home will be described with reference to FIGS. 5 and 6.

  First, the operation of the electric lock system when the radio wave intensity of the received radio wave between the electric lock device 2 and the key device 3 does not decrease due to fading when the user 40 returns home will be described with reference to FIG.

  The detection unit 212 of the electric lock device 2 constantly monitors the presence / absence of an operation signal from the operation unit 23 (that is, the presence / absence of a specific action of the user 40) (S31).

  When the user 40 holding the key device 3 approaches the doorway 11 outside the house 13 and operates the operation button 231, an operation signal is input from the operation unit 23 to the lock-side control unit 21. When the detection unit 212 of the lock side control unit 21 determines that an operation has been performed using the operation unit 23 based on the operation signal input from the operation unit 23 (Yes in S31), the lock side control unit 21 locks the lock side control unit 21. The advertising packet is transmitted from the side communication unit 22 (S32).

  The advertising packet transmitted from the lock side communication unit 22 is received by the key side communication unit 32 of the key device 3 possessed by the user 40. When the key side communication unit 32 receives the advertising packet, the key side control unit 31 transmits a connection request signal from the key side communication unit 32 to the electric lock device 2 (S33).

  When the lock side communication unit 22 of the electric lock device 2 receives the connection request signal from the key device 3, the lock side control unit 21 starts authentication communication for authenticating the key device 3 (S34). When starting the authentication communication, the lock side control unit 21 transmits a request signal for requesting the key ID of the key device 3 from the lock side communication unit 22 to the key device 3. When the key side communication unit 32 receives the request signal, the key side control unit 31 reads the key ID from the storage unit 34 and transmits an ID signal including the key ID from the key side communication unit 32 to the electric lock device 2.

  When the lock side communication unit 22 receives the ID signal transmitted from the key side communication unit 32, the measurement unit of the electric lock device 2 measures the reception strength of the received signal received by the lock side communication unit 22 (S35). That is, when the detection unit 212 of the electric lock device 2 detects the specific action, the measurement unit of the electric lock device 2 measures the radio wave intensity of the received radio wave from the key device 3.

  In addition, when the lock side communication unit 22 receives the ID signal, the authentication unit 211 of the lock side control unit 21 collates the key ID included in the ID signal with the registered ID registered in the authentication unit 211. The key ID authentication process is executed. When the authentication of the key ID by the authentication unit 211 is successful, the determination unit of the electric lock device 2 compares the measured value R1 of the measurement unit with the predetermined threshold value Rth. When there is no drop in the radio field intensity of the received radio wave due to fading or the like, the key device 3 exists in the operation area 14, and therefore the measurement value R1 of the measurement unit is assumed to be equal to or greater than the threshold value Rth. When the measurement value R1 of the measurement unit is equal to or greater than the threshold value Rth (S36), the lock side control unit 21 of the electric lock device 2 outputs a control signal to the lock drive unit 24 when the key ID authentication is successful. Then, the door 11 is unlocked by causing the lock drive unit 24 to drive the lock device (S37).

  As described above, the electric lock device 2 performs an unlocking operation for switching the doorway 11 from the locked state to the unlocked state by communication with the key device 3, so that the user 40 can open the doorway 11 and enter the home 12. it can.

  Next, the operation of the electric lock system when the radio wave intensity of the received radio wave between the electric lock device 2 and the key device 3 temporarily decreases due to fading or the like will be described with reference to FIG. Here, in the state where the key device 3 exists in the operable area, the radio wave intensity of the received radio wave received by the electric lock device 2 is lower than the threshold value Rth. Assume that wireless communication is possible between

  The detection unit 212 of the electric lock device 2 constantly monitors the presence / absence of an operation signal from the operation unit 23 (that is, the presence / absence of a specific action of the user 40) (S41).

  When the user 40 holding the key device 3 approaches the doorway 11 outside the house 13 and operates the operation button 231, an operation signal is input from the operation unit 23 to the lock-side control unit 21. When the detection unit 212 of the lock side control unit 21 determines that an operation has been performed using the operation unit 23 based on the operation signal input from the operation unit 23 (Yes in S41), the lock side control unit 21 locks. An advertising packet is transmitted from the side communication unit 22 (S42).

  The advertising packet transmitted from the lock side communication unit 22 is received by the key side communication unit 32 of the key device 3 possessed by the user 40. When the key side communication unit 32 receives the advertising packet, the key side control unit 31 transmits a connection request signal from the key side communication unit 32 to the electric lock device 2 (S43).

  When the lock side communication unit 22 of the electric lock device 2 receives the connection request signal from the key device 3, the lock side control unit 21 starts authentication communication for authenticating the key device 3 (S44). When starting the authentication communication, the lock side control unit 21 transmits a request signal for requesting the key ID of the key device 3 from the lock side communication unit 22 to the key device 3. When the key side communication unit 32 receives the request signal, the key side control unit 31 reads the key ID from the storage unit 34 and transmits an ID signal including the key ID from the key side communication unit 32 to the electric lock device 2.

  When the lock side communication unit 22 receives the ID signal transmitted from the key side communication unit 32, the measurement unit of the electric lock device 2 measures the reception strength of the received signal received by the lock side communication unit 22 (S45). That is, when the detection unit 212 of the electric lock device 2 detects the specific action, the measurement unit of the electric lock device 2 measures the radio wave intensity of the received radio wave from the key device 3.

  In addition, when the lock side communication unit 22 receives the ID signal, the authentication unit 211 of the lock side control unit 21 collates the key ID included in the ID signal with the registered ID registered in the authentication unit 211. The key ID authentication process is executed. When the authentication of the key ID by the authentication unit 211 is successful, the determination unit of the electric lock device 2 compares the measured value R1 of the measurement unit with the predetermined threshold value Rth. Here, a case is assumed where the radio wave intensity of the received radio wave temporarily drops due to fading or the like, and the measurement value R1 of the measurement unit falls below the threshold value Rth. When the determination unit of the electric lock device 2 determines that the measurement value R1 of the measurement unit is less than the threshold value Rth (S46), the key-side control unit 31 creates a notification command for causing the notification unit 35 to perform a notification operation. (S47) This notification command is transmitted from the lock side communication unit 22 to the key device 3 (S48).

  When the key side communication unit 32 of the key device 3 receives the notification command transmitted from the electric lock device 2, the key side control unit 31 causes the notification unit 35 to perform a notification operation (S49).

  Based on the notification operation of the notification unit 35, the user 40 changes the position and orientation of the key device 3 or approaches the electric lock device 2, thereby communicating between the electric lock device 2 and the key device 3. Change the environment. When the user 40 changes the position and orientation of the key device 3 or approaches the electric lock device 2, there is a high possibility that the communication environment between the electric lock device 2 and the key device 3 is improved. Is present in the operation area 14, it is assumed that the measurement value of the measurement unit of the electric lock device 2 is equal to or greater than the threshold value Rth.

  When the determination unit determines that the measurement value of the measurement unit is less than the threshold value Rth, the lock side control unit 21 of the electric lock device 2 authenticates the key device 3 after a predetermined standby time has elapsed. Authentication communication is started (S50). When starting the authentication communication, the lock side control unit 21 transmits a request signal for requesting the key ID of the key device 3 from the lock side communication unit 22 to the key device 3. When the key side communication unit 32 receives the request signal, the key side control unit 31 reads the key ID from the storage unit 34 and transmits an ID signal including the key ID from the key side communication unit 32 to the electric lock device 2.

  When the lock side communication unit 22 receives the ID signal transmitted from the key side communication unit 32, the measurement unit of the electric lock device 2 measures the reception strength of the received signal received by the lock side communication unit 22 (S51). In addition, when the lock side communication unit 22 receives the ID signal, the authentication unit 211 of the lock side control unit 21 collates the key ID included in the ID signal with the registered ID registered in the authentication unit 211. The key ID authentication process is executed. When the authentication of the key ID by the authentication unit 211 is successful, the determination unit of the electric lock device 2 compares the measured value R1 of the measurement unit with the predetermined threshold value Rth. When the determination unit of the electric lock device 2 determines that the measurement value R1 of the measurement unit is equal to or greater than the threshold value Rth (S52), the lock side control unit 21 outputs a control signal to the lock drive unit 24, The doorway 11 is brought into an unlocked state by causing the drive unit 24 to drive the locking device (S53).

  As described above, the electric lock device 2 performs an unlocking operation for switching the doorway 11 from the locked state to the unlocked state by communication with the key device 3, so that the user 40 can open the doorway 11 and enter the home 12. it can.

  In this way, when the radio wave intensity of the received radio wave at the electric lock device 2 becomes less than the threshold value Rth due to fading or the like, the lock side control unit 21 of the electric lock device 2 changes from the lock side communication unit 22 to the key device 3. A notification command is transmitted to cause the notification unit 35 of the key device 3 to perform a notification operation. Based on the notification operation by the notification unit 35, the user 40 can grasp that the radio wave intensity of the received radio wave at the electric lock device 2 is less than the threshold value Rth. Therefore, the user 40 can improve the communication environment between the electric lock device 2 and the key device 3 by changing the position and orientation of the key device 3 or approaching the electric lock device 2. Thereafter, a communication error between the electric lock device 2 and the key device 3 is less likely to occur. Thereby, the probability that the unlocking operation and the locking operation of the entrance / exit 11 using the key device 3 will be high, and the usability of the electric lock system 1 can be improved.

(5.2) Other Modifications In the above embodiment and Modification 1, the key device 3 is configured by a general-purpose information terminal such as a smartphone. However, the key device 3 can be carried by the user 40. A tag-shaped device formed in a size may be used, and for example, it is used by being attached to a bag possessed by the user 40. The key device 3 is not limited to a tag-shaped device, and may be, for example, an IC card.

  In the above embodiment and Modification 1, the detection unit 212 detects a specific action in which the user locks or unlocks the entrance 11 based on the operation of the operation unit 23 (operation buttons 231 and 232) by the user. However, the specific action may be detected by other methods. For example, the operation unit 23 may be a door handle (handle) included in the door of the doorway 11, and the detection unit 212 may detect an operation in which the user touches the door handle as a specific action. As a sensor for detecting an operation of a user touching the door handle, there are, for example, a capacitance type and a piezoelectric type touch sensor. When the key device 3 is an information terminal such as a smartphone and a control signal instructing locking or unlocking is transmitted from the information terminal to the electric lock device 2 in accordance with a user operation, the detection unit 212 performs this control. The specific action may be detected by receiving the signal.

  In the above embodiment and Modification 1, when the electric lock system 1 includes a plurality of key devices 3, the threshold value Rth may be set in each of the plurality of key devices 3. Since the transmission output and reception sensitivity of the key side communication unit 32 are different for each key device 3, a threshold value Rth suitable for each key device 3 can be set.

  In the above embodiment and Modification 1, the determination unit (311) determines whether or not the measurement value (R1) of the measurement unit (33) is equal to or greater than a predetermined threshold (Rth). Depending on the setting of the value (Rth), it is determined whether or not the measurement value (R1) of the measurement unit (33) is larger than a predetermined threshold value (Rth). That is, the determination unit (311) determines whether or not the measured value (R1) is equal to or greater than a predetermined threshold value (Rth), and the measured value (R1) is greater than the predetermined threshold value (Rth). There is no technical difference between the determination unit (311) determining whether it is large or not.

  In said embodiment and the modification 1, the notification part 35 is the measurement value (R1) of a measurement part (33), when the measurement value (R1) of a measurement part (33) is less than a threshold value (Rth). The method of notification may be changed according to the difference between the threshold and the threshold value (Rth). For example, when the notification unit 35 performs notification by generating a notification sound, the notification unit 35 increases the difference between the measurement value (R1) and the threshold value (Rth) of the measurement unit (33). You may increase the volume. Further, the notification unit 35 may increase the frequency of the notification sound as the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) increases. Moreover, the notification part 35 may shorten the space | interval which emits a notification sound, so that the magnitude | size of the difference of the measured value (R1) and threshold value (Rth) of a measurement part (33) is large. Further, when the notification unit 35 performs the notification by vibrating the case 36, the notification unit 35 increases the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth). What is necessary is just to enlarge the magnitude | size of the vibration given to 36. As described above, the notification unit 35 changes the notification method according to the difference between the measurement value (R1) and the threshold value (Rth) of the measurement unit (33), so that the user can It is possible to sensibly grasp the degree of decrease in the reception strength of the wireless communication between the device 2 and the key device 3. Therefore, it becomes easy for the user to sensuously grasp how much the key device 3 should be moved or how close to the electric lock device 2 should be.

  In the above embodiment and Modification 1, the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth), and the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) ) May be set so that the notification unit 35 does not perform the notification operation. This upper limit value may be set to a value obtained by adding a predetermined margin to the decrease in the radio wave intensity of the received radio wave generated by fading or the like. Therefore, when the magnitude of the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) is equal to or greater than the upper limit value, the decrease in the received intensity due to fading is measured by the measurement unit (33). Even in addition to the value (R1), it is assumed that the value is less than the threshold value (Rth), and this key device 3 is assumed to exist outside the operation area 14. That is, it is assumed that the key device 3 is not the key device 3 possessed by the user who is trying to lock or unlock the electric lock device 2, and the notification operation is performed by such an irrelevant key device 3. The possibility can be reduced.

  In the above embodiment and Modification 1, the communication method between the electric lock device 2 and the key device 3 is not limited to Bluetooth (registered trademark), and may be wireless communication using other radio waves as a medium.

  In said embodiment and the modification 1, the building 10 to which the electric lock system 1 is applied is not limited to a detached house, for example, a house other than a detached house such as each dwelling of an apartment house, or an office or a store, It may be non-residential such as a nursing home.

(6) Summary As described above, the electric lock system (1) of the first aspect includes the electric lock device (2), at least one key device (3), the measurement unit (33), and the determination unit. (311), a control unit (21), and a notification unit (35). The electric lock device (2) includes a lock side communication unit (22) that performs wireless communication, and locks or unlocks the entrance (11) of the building (10). The key device (3) includes a key side communication unit (32) that can communicate with the lock side communication unit (22). The measurement unit (33) receives one of the lock side communication unit (22) and the key side communication unit (32) received from the other of the lock side communication unit (22) and the key side communication unit (32). Measure the radio field strength. The determination unit (311) determines whether or not the measurement value (R1) of the measurement unit (33) is greater than or equal to a predetermined threshold value (Rth). The control unit (21) is provided in the electric lock device (2), and when the determination unit (311) determines that the measurement value (R1) of the measurement unit (33) is equal to or greater than the threshold value (Rth), the entrance / exit Control to unlock (11) is performed. When the determination unit (311) determines that the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth), the notification unit (35) is a user (40) that possesses the key device (3). ).

  According to the first aspect, when the determination unit (311) determines that the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth), the notification unit (35) performs a notification operation. Therefore, the user possessing the key device (3) can grasp that the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth). When the user receives a notification from the notification unit (35) and changes the position and orientation of the key device (3) or approaches the electric lock device (2), the measurement value (R1) of the measurement unit (33) is changed. There is a high possibility that the threshold (Rth) or more will be reached, and the possibility that the unlocking of the doorway (11) will fail will be reduced, so that the convenience for the user can be improved.

  The electric lock system (1) of a 2nd aspect is further provided with the detection part (212) which detects the specific action which a user locks or unlocks the entrance / exit (11) in a 1st aspect. When the detection unit (212) detects the specific action, the measurement unit (33) is configured to measure the radio wave intensity of the received radio wave.

  According to the second aspect, when the detection unit (212) detects the specific action, the measurement unit (33) measures the radio wave intensity of the received radio wave, so that the detection unit (212) detects the specific action. When there is not, the measurement unit (33) measures the radio wave intensity of the received radio wave, and the possibility that the doorway (11) is unlocked can be reduced.

  In the electric lock system (1) of the third aspect, in the second aspect, the specific action is an operation performed by the user on the electric lock device (2) in order to unlock the doorway (11).

  According to the third aspect, when the user operates the electric lock device (2) to unlock the doorway (11), the measurement unit (33) measures the radio field intensity of the received radio wave. . Therefore, when this operation is not detected by the detection unit (212), the measurement unit (33) measures the radio wave intensity of the received radio wave, thereby reducing the possibility that the doorway (11) is unlocked.

  In the electric lock system (1) of the fourth aspect, in any one of the first to third aspects, notification is made when the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth). The unit (35) changes the way of notification according to the magnitude of the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth).

  According to the fourth aspect, the user possessing the key device (3) determines the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) from the notification method of the notification unit (35). The size of can be grasped.

  In the electric lock system (1) of the fifth aspect, in any one of the first to fourth aspects, the measurement value (R1) of the measurement unit (33) is less than the threshold value (Rth), and When the magnitude of the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) is equal to or greater than a predetermined upper limit value, the notification unit (35) is configured not to perform notification.

  According to the fifth aspect, when the magnitude of the difference between the measurement value (R1) of the measurement unit (33) and the threshold value (Rth) is greater than or equal to the predetermined upper limit value, the key device (3) It is assumed that the lock device (2) does not exist in an operable area. Therefore, the notification operation is difficult to be performed by the key device (3) possessed by a person who is not trying to lock or unlock the electric lock device (2), and convenience is improved.

  In the electric lock system (1) of the sixth aspect, in any one of the first to fifth aspects, there are a plurality of key devices (3), and each of the plurality of key devices (3) has a threshold value (Rth). Is set.

  According to the sixth aspect, when the transmission output and reception sensitivity of the key side communication unit (32) are different for each key device (3), the key device is considered in consideration of variations in the transmission output and reception sensitivity. A threshold value (Rth) can be set in each of (3).

  The electric lock device (2) according to the seventh aspect is used in the electric lock system (1) according to any one of the first to sixth aspects, and includes a lock side communication unit (22) and a control unit (21). .

  According to the 7th aspect, a user's convenience can be improved.

DESCRIPTION OF SYMBOLS 1 Electric lock system 2 Electric lock device 3 Key device 10 Building 11 Entrance 21 Lock side control part (control part)
22 lock side communication unit 23 operation unit 31 key side control unit 32 key side communication unit 33 measurement unit 35 notification unit 211 authentication unit 212 detection unit 311 determination unit R1 measurement value R2 threshold

Claims (7)

An electric lock device that has a lock side communication unit that performs wireless communication and locks or unlocks the entrance of the building; and
At least one key device having a key side communication unit capable of communicating with the lock side communication unit;
One of the lock side communication unit and the key side communication unit measures a radio field intensity of a received radio wave received from the other of the lock side communication unit and the key side communication unit, and
A determination unit for determining whether the measurement value of the measurement unit is equal to or greater than a predetermined threshold; and
A control unit that is provided in the electric lock device, and that controls to unlock the doorway when the determination unit determines that the measurement value of the measurement unit is equal to or greater than the threshold;
When the determination unit determines that the measurement value of the measurement unit is less than the threshold value, a notification unit that performs notification to the user possessing the key device,
An electric lock system characterized by that. A detection unit for detecting a specific action for the user to lock or unlock the doorway;
When the detection unit detects the specific action, the measurement unit is configured to measure the radio field intensity of the received radio wave,
The electric lock system according to claim 1. The specific action is an operation performed on the electric lock device by the user to unlock the doorway.
The electric lock system according to claim 2. When the measurement value of the measurement unit is less than the threshold value,
The notification unit changes the notification method according to the difference between the measurement value of the measurement unit and the threshold value.
The electric lock system according to any one of claims 1 to 3. When the measurement value of the measurement unit is less than the threshold value and the magnitude of the difference between the measurement value of the measurement unit and the threshold value is greater than or equal to a predetermined upper limit value, the notification unit is Configured to not notify,
The electric lock system according to any one of claims 1 to 4, wherein: There are a plurality of the key devices,
The threshold is set in each of the plurality of key devices;
The electric lock system according to any one of claims 1 to 5. An electric lock device used in the electric lock system according to any one of claims 1 to 6,
The lock side communication unit and the control unit,
An electric lock device characterized by that.

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