JP2009263892A - Electronic lock control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the risk that an electronic lock is illegally unlocked by a person other than allowable users. <P>SOLUTION: This electronic lock control system transmits an electronic lock ID stored in a ROM to a control device when the operating section accepts an operation to instruct the unlocking of the electronic lock. The control device specifies a phone number so stored as to correspond to the received electronic lock ID when receiving the transmitted electronic lock ID, and transfers the electronic lock ID to the specified phone number. In a mobile phone, the transferred electronic lock ID is superimposed on the sound signal which indicates melody sound. The melody sound according to the sound signal on which the electronic lock ID is superimposed is emitted from the mobile phone. The electronic lock control system extracts the electronic lock ID from the sound signal which indicates the melody sound when picking up the emitted melody sound. When the extracted electronic lock ID and the electronic lock ID stored in the ROM are identical to each other, the electronic lock is unlocked. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for controlling an electronic lock.

Electronic locks that electrically lock and unlock are known. For example, Patent Document 1 discloses a telephone device having a door phone function and an electronic lock control function. Patent Document 2 discloses a technique for locking and unlocking an electronic lock when a password registered in advance by a user is pronounced.
JP 05-14532 A Japanese Patent Laid-Open No. 08-170458

By the way, in the techniques described in Patent Documents 1 and 2 described above, in order to lock and unlock the electronic lock, the user needs to operate the telephone device and pronounce the password. If this work content is known to a malicious person, there is a risk that the electronic lock may be unlocked by a person other than the authorized user.
The present invention has been made in view of such a background, and an object thereof is to reduce the risk that an electronic lock is illegally unlocked by a person other than a legitimate user.

  A first configuration of an electronic lock control system according to the present invention includes a communication terminal and an electronic lock control device, wherein the communication terminal acquires identification information transmitted from the electronic lock control device, A superimposing unit that superimposes and outputs the identification information on the audio signal to be expressed; and a sound emitting unit that emits a sound corresponding to the audio signal output from the superimposing unit. Storage means for associating and storing the identification information assigned to the communication terminal and the communication address assigned to the communication terminal, operation means for accepting an operation by the user, and the operation means instructing to unlock the electronic lock When the operation is accepted, the identification information stored in the storage means is transmitted to the communication address stored in association with the identification information, and the sound emission means of the communication terminal A sound collecting means for collecting the sound that has been sounded and outputting a sound signal representing the sound; an extracting means for extracting the identification information from the sound signal output by the sound collecting means; and the extraction means extracting the sound information. When the identification information matches the identification information stored in the storage means, the electronic information lock is provided with an unlocking control means for unlocking the electronic lock.

  A second configuration of the electronic lock control system according to the present invention includes a management device, a plurality of communication terminals, and a plurality of electronic lock control devices, and the management device is provided in each of the electronic lock control devices. Communication address storage means for storing the assigned identification information and the communication address assigned to any of the plurality of communication terminals in association with each other, and acquiring the identification information transmitted from the electronic lock control device, A communication address specifying means for specifying a communication address stored in the communication address storage means in association with the acquired identification information; and the acquired identification information addressed to the communication address specified by the communication address specifying means. Each of the communication terminals acquires the identification information transferred from the transfer unit of the management device, and converts the information into an audio signal representing audio. Superimposing means for superimposing and outputting the acquired identification information; and sound emitting means for emitting sound corresponding to the audio signal output from the superimposing means, each of the electronic lock control devices, Identification information storage means for storing identification information assigned to the user, operation means for accepting an operation by a user, and when the operation means accepts an operation for instructing unlocking of the electronic lock, the identification information storage means stores the identification information. Identification information transmitting means for transmitting the identification information to the management device, sound collecting means for collecting the sound emitted from the sound emitting means of the communication terminal, and outputting a sound signal representing the sound; The extraction means for extracting the identification information from the audio signal output by the sound collection means, the identification information extracted by the extraction means, and the identification information stored in the identification information storage means are one. When it is characterized in that it comprises a unlocking control means for unlocking the electronic lock.

  According to a third configuration of the present invention, in the first configuration or the second configuration, the superimposing unit of the communication terminal acquires an audio signal representing a ring tone that is emitted when the identification information is acquired. The identification information is superimposed and output, and the sound emitting means of the communication terminal emits a ring tone according to the audio signal output from the superimposing means.

  According to a fourth configuration of the present invention, in the second configuration, the communication terminal includes an authentication information transmission unit that transmits authentication information input by a user, and the communication address storage unit of the management device includes: The communication address assigned to the communication terminal and the authentication information registered in advance by the user of the communication terminal are stored in association with each other, and the transfer unit of the management device receives the authentication information transmission unit of the communication terminal. If the transmitted authentication information matches the authentication information stored in the communication address storage means in association with the communication address specified by the communication address specifying means, the acquisition is sent to the communication address. The identification information is transferred.

  According to a fifth configuration of the present invention, in the second configuration described above, the identification information transmitting unit of the electronic lock control device includes a period information indicating a predetermined period in the identification information stored in the identification information storage unit. In addition, the transfer unit of the management device does not transfer the identification information when a predetermined time limit represented by the time limit information added to the acquired identification information has passed. When the predetermined time limit has not passed, the identification information and the time limit information are transferred, or the superimposing means of the communication terminal transfers the time limit transferred from the transfer means of the management device. When the predetermined time limit represented by the information has passed, the acquired identification information is not superimposed, and when the predetermined time limit has not passed, the identification information transferred from the transfer unit of the management device And deadline information The identification information and the time limit information are superimposed and output on a voice signal representing the voice, or the extraction means of the electronic lock control device extracts the identification information from the voice signal output by the sound collection means. And the time limit information is extracted, and the unlocking control means does not unlock the electronic lock when a predetermined time limit represented by the time limit information extracted by the extraction means has passed. .

  According to a sixth configuration of the present invention, in the second configuration, the electronic lock control device receives the operation every time the operation means receives an operation for instructing the unlocking of the electronic lock. A temporary information generating means for generating valid temporary information for a period until the operation is received or a predetermined period from the time when the operation is received, and the identification information transmitting means of the electronic lock control device includes the identification information storage The identification information stored in the means and the temporary information generated by the temporary information generation means are transmitted to the management device, and the transfer means of the management device is transmitted from the electronic lock control device. Temporary information and the acquired identification information are transferred, and the superimposing means of the communication terminal acquires the temporary information and identification information transferred from the transfer means of the management device, and The obtained temporary information and identification information are superimposed on the audio signal representing the signal, and the extraction means of the electronic lock control device extracts the temporary information and identification information from the audio signal output by the sound collection means. The unlocking control means of the electronic lock control device matches the identification information extracted by the extraction means with the identification information stored in the identification information storage means, and the extraction means When the extracted temporary information matches the temporary information generated by the temporary information generating means, the electronic lock is unlocked.

  According to the present invention, it is possible to reduce the risk of unauthorized opening of the electronic lock by a person other than the authorized user.

[Constitution]
(Configuration of electronic lock control system)
FIG. 1 is a diagram schematically showing a configuration of an electronic lock control system 1 according to the present embodiment. The electronic lock control system 1 includes a management device 10, a plurality of mobile phones 20, and a plurality of electronic lock control devices 30. In the figure, only one set of the door 2, the electronic lock 3, and the electronic lock control device 30 is shown, but actually there are a plurality of sets. The electronic lock control device 30 is a device that controls the electronic lock 3 provided on the door 2 of the house. The electronic lock 3 is configured to lock or unlock the door 2 in accordance with the control of the electronic lock control device 30. The management device 10 is installed in a management center or the like that collectively manages a plurality of electronic lock control devices 30 and is connected to each electronic lock control device 30 via a network N such as the Internet. The management device 10 communicates with the mobile phone 20 possessed by a legitimate user of each electronic lock control device 30 via the telephone network M including a public switched telephone network and a mobile communication network. It has become. Although not shown, the mobile communication network of the telephone network M includes a radio base station that performs radio communication with the mobile phone 20 and an exchange connected to the radio base station.

(Management device configuration)
Next, the configuration of the management apparatus 10 will be described. FIG. 2 is a block diagram illustrating a configuration of the management apparatus 10. As shown in the figure, the management apparatus 10 includes a control unit 11, a first communication unit 12, a second communication unit 13, and a storage unit 14. The control unit 11 controls each unit of the management device 10 and performs various processes. The control unit 11 includes a CPU (Central Processing Unit) 11a that executes processing according to a program, a ROM (Read Only Memory) 11b that stores a program used by the CPU 11a, and a RAM (Random Access) used as a work area of the CPU 11a. Memory) 11c and the like. For example, the CPU 11 a functions as a communication address specifying unit that specifies the telephone number of the mobile phone 20 possessed by a legitimate user of the electronic lock control device 30.

  The first communication unit 12 is connected to the network N and establishes communication with the electronic lock control device 30 via the network N. The second communication unit 13 is connected to the telephone network M and establishes communication with the mobile phone 20 via the telephone network M. For example, the second communication unit 13 cooperates with the CPU 11 a to transfer the electronic lock ID transmitted from the electronic lock control device 30 to the mobile phone 20 possessed by the authorized user of the electronic lock control device 30. It functions as a transfer means for transferring. The storage unit 14 is a communication address storage unit including a hard disk and stores voice message information representing a voice message for the user of the mobile phone 20, a management table T, and the like.

  FIG. 3 is a diagram illustrating an example of the management table T stored in the storage unit 14. As shown in the figure, in this management table T, “electronic lock ID”, “telephone number”, and “password” are described in association with each other. The “electronic lock ID” is identification information assigned to each electronic lock control device 30. The “telephone number” is the telephone number of the mobile phone 20 possessed by an authorized user of the electronic lock control device 30. This telephone number is used as a communication address assigned to the mobile phone 20. The “password” is information composed of a string of characters and numbers registered in advance by an authorized user of the electronic lock control device 30. For example, in the management table T, a legitimate user of the electronic lock control device 30 assigned “01” as the electronic lock ID has the mobile phone 20 assigned the telephone number “090-XXXX-XXXX”. It represents that. In addition, the password registered by the legitimate user is “1234”.

(Configuration of mobile phone)
Next, the configuration of the mobile phone 20 will be described. The mobile phone 20 is a communication terminal possessed by a user. FIG. 4 is a block diagram showing a configuration of the mobile phone 20. As shown in the figure, the mobile phone 20 includes a control unit 21, an operation unit 22, a display unit 23, a wireless communication unit 24, a sound collection unit 25, a sound emission unit 26, and an audio processing unit 27. And. The control unit 21 controls each unit of the mobile phone 20 and performs various processes. Like the control unit 11 of the management apparatus 10 described above, the control unit 21 includes a CPU 21a that executes processing according to a program, a ROM 21b that stores a program used by the CPU 21a, a RAM 21c that is used as a work area of the CPU 21a, and the like. I have. The ROM 21b stores voice information representing a ring tone, voice information representing a melody sound, and the like.

  The operation unit 22 includes various operation buttons and the like, receives a user's operation, and supplies a signal corresponding to the operation to the CPU 21a. The operation unit 22 includes a call button for instructing transition to a call state, a number input button for inputting numbers 0 to 9, and the like. The display unit 23 includes a liquid crystal display and the like, and displays an image corresponding to data supplied by the CPU 21a. The wireless communication unit 24 includes an antenna and the like, and wirelessly connects to a wireless base station of the telephone network M, and establishes communication with the management apparatus 10 via the telephone network M. For example, the wireless communication unit 24 functions as an authentication information transmission unit that transmits a password, which is authentication information input by the user, in cooperation with the CPU 21a. The sound collection unit 25 includes a microphone and the like, collects sound emitted from the user, and supplies a sound signal representing the collected sound to the sound processing unit 27. The sound emitting unit 26 is a sound emitting unit including a speaker or the like, and emits a sound corresponding to the sound signal supplied from the sound processing unit 27.

  The audio processing unit 27 performs various processes on the audio signal supplied by the sound collection unit 25 and the audio signal supplied to the sound emission unit 26. For example, the audio processing unit 27 performs A / D conversion on the audio signal supplied from the sound collection unit 25 and supplies it to the CPU 21a, or D / A converts the data supplied by the CPU 21a to the sound emission unit 26. Process to supply. The sound processing unit 27 modulates the data supplied by the CPU 21a using an ASK (Amplitude Shift Keying) method, a DTMF (Dual-Tone Multi-Frequency) method, or the like to generate a modulation signal, and then represents sound representing a melody sound. It functions as a superimposing means for superimposing the modulation signal on the signal and outputting it.

(Configuration of electronic lock control device)
Next, the configuration of the electronic lock control device 30 will be described. FIG. 5 is a block diagram illustrating a configuration of the electronic lock control device 30. As shown in the figure, the electronic lock control device 30 includes a control unit 31, an operation button 32, a communication unit 33, a sound collection unit 34, and an audio processing unit 35. The control unit 31 controls each unit of the electronic control device 30 and performs various processes. Like the control unit 11 of the management apparatus 10 described above, the control unit 31 includes a CPU 31a that executes processing according to a program, a ROM 31b that stores a program used by the CPU 31a, a RAM 31c that is used as a work area of the CPU 31a, and the like. I have. For example, the CPU 31a functions as an unlocking control unit that unlocks the electronic lock 3. The ROM 31b is identification information storage means, and stores an electronic lock ID assigned to the own device.

  The operation button 32 is an operation unit that accepts an operation for instructing the user to unlock the electronic lock 3, and supplies a signal corresponding to this operation to the CPU 31a. The communication unit 33 is connected to the network N and establishes communication with the management apparatus 10 via the network N. For example, the communication unit 33 functions as a transmission unit that transmits the electronic lock ID assigned to the own device in cooperation with the CPU 31a. The sound collection unit 34 is a sound collection unit including a microphone, and collects sound emitted from the mobile phone 20 and outputs a sound signal representing the collected sound. The audio processing unit 35 performs various processes on the audio signal output by the sound collection unit 34. For example, the audio processing unit 35 functions as an extraction unit that extracts a modulation signal from the audio signal output by the sound collection unit 34 and demodulates the extracted modulation signal to generate original digital data.

[Operation]
Next, processing of the electronic lock control system 1 will be described. FIG. 6 is a flowchart showing processing of the electronic lock control system 1. When the user wants to unlock the electronic lock 3, the user presses the operation button 32 of the electronic lock control device 30 that controls the electronic lock 3. When the operation button 32 is pressed by the user, the CPU 31a of the electronic lock control device 30 detects the operation (step S10). Then, CPU31a reads electronic lock ID memorize | stored in ROM31b, and transmits to the management apparatus 10 from the communication part 33 (step S20). Here, it is assumed that an electronic lock ID of “01” is stored in the ROM 31 b and this electronic lock ID is transmitted to the management apparatus 10.

  When the electronic lock ID is transmitted, the CPU 11a of the management apparatus 10 receives the electronic lock ID by the first communication unit 12 (step S30). Subsequently, the CPU 11a specifies a telephone number stored in association with the received electronic lock ID in the management table T stored in the storage unit 14 (step S40). That is, the CPU 11a acquires the electronic lock ID transmitted from the electronic lock control device 30, and specifies the telephone number stored in the storage unit 14 in association with the acquired electronic lock ID. In this example, since “01” is received as the electronic lock ID, the telephone number “090-XXXX-XXXX” associated with the electronic lock ID “01” is specified in the management table T shown in FIG. The Subsequently, the CPU 11a transmits a connection request from the second communication unit 13 to the identified telephone number “090-XXXX-XXXX”, thereby calling the mobile phone 20 to which the telephone number is assigned (step S50). .

  When the connection request is transmitted, the CPU 21a of the mobile phone 20 receives the connection request by the wireless communication unit 24 (step S60). At this time, the CPU 21a reads out voice information representing a ringtone from the ROM 21b and supplies it to the voice processing unit 27. The voice processing unit 27 converts the voice information supplied by the CPU 21 a into a voice signal that is an analog signal and supplies the voice signal to the sound emission unit 26, and causes the sound emission unit 26 to emit a ringtone according to the voice signal. As a result, the user can be notified of an incoming call. When the user rings, the user presses the call button on the operation unit 22 to place the mobile phone 20 in a call state. When the call button of the operation unit 22 is pressed by the user, the CPU 21a of the mobile phone 20 makes a response to the connection request from the wireless communication unit 24 (step S70).

  When the response is made by the mobile phone 20, the CPU 11a of the management device 10 reads out the voice message information representing the voice message prompting the user of the mobile phone 20 to input the password from the storage unit 14, and the second communication unit 13 (step S80). When the voice message information is transmitted, the CPU 21 a of the mobile phone 20 receives the voice message information by the wireless communication unit 24 and supplies it to the voice processing unit 27. The voice processing unit 27 converts the voice message information supplied by the CPU 21a into a voice signal that is an analog signal and supplies the voice signal to the sound emitting unit 26, and causes the sound emitting unit 26 to emit a voice message corresponding to the voice signal. (Step S90). When the voice message flows, the user presses the numeric input button of the operation unit 22 according to this guidance and inputs “1234” which is the password registered by the user. When the number input button of the operation unit 22 is pressed by the user, the CPU 21a of the mobile phone 20 transmits the input password from the wireless communication unit 24 by the DTMF method or the like (step S100).

  When the password input by the user of the mobile phone 20 is transmitted, the CPU 11 a of the management device 10 receives the password by the second communication unit 13. Subsequently, the CPU 11a collates the received password with the password associated with the electronic lock ID “01” in the management table T of the storage unit 14 (step S110). If the two passwords do not match, it means that the user who entered the password is not a valid user. For example, an error message is transmitted from the second communication unit 13 to the mobile phone 20. Then, this process ends. On the other hand, if both passwords match, it means that the user who entered the password is a valid user, so the electronic lock ID received in step S30 is transferred from the second communication unit 13 to the mobile phone 20. Transfer (step S120). That is, the CPU 11a and the second communication unit 13 cooperate to store the password transmitted from the mobile phone 20 and the storage unit 14 in association with the telephone number specified in step S40 described above. If the password matches, the acquired electronic lock ID is transferred to the telephone number.

  When the electronic lock ID is transmitted, the CPU 21a of the mobile phone 20 receives the electronic lock ID by the wireless communication unit 24 (step S130). Subsequently, the CPU 21 a reads out audio information representing a melody sound, and supplies the received electronic lock ID and the audio information to the audio processing unit 27. When these pieces of information are supplied by the CPU 21a, the sound processing unit 27 first modulates the electronic lock ID to generate a modulated signal. Subsequently, the audio processing unit 27 converts the audio information supplied by the CPU 21a into an audio signal that is an analog signal, and superimposes the generated modulation signal on the audio signal and outputs it (step S140). That is, the voice processing unit 27 acquires the electronic lock ID transmitted from the electronic lock control device 30, and outputs the electronic lock ID superimposed on the voice signal representing the voice.

  Specifically, the sound processing unit 27 first changes the waveform of the carrier wave c based on the binary data d “01101...” Of the electronic lock ID shown in FIG. The modulation signal s1 is generated. As shown in the figure, in the modulation signal s1, a portion corresponding to “0” of the binary data d has an amplitude of 0, and a portion corresponding to “1” of the binary data d has a waveform of the carrier wave c. The frequency of the carrier wave c is preferably selected from a band that does not overlap with the human audible range, and is, for example, about 20 kHz. The amplitude of the carrier wave c is preferably smaller than the amplitude of the audio signal to be superimposed. Subsequently, the audio processing unit 27 generates the audio signal s3 by superimposing the generated modulation signal s1 on the audio signal s2 representing the melody sound shown in FIG. When the audio signal s3 is generated in this way, the audio processing unit 27 of the mobile phone 20 supplies the generated audio signal s3 to the sound emitting unit 26 and emits a melody sound corresponding to the audio signal s3 ( Step S150).

  The user holding the mobile phone 20 brings the mobile phone 20 closer to the electronic lock control device 30 when a melody sound is generated. As a result, the melody sound emitted from the mobile phone 20 propagates through the air and reaches the electronic lock control device 30. When the melody sound arrives, the CPU 31a of the electronic lock control device 30 collects the melody sound by the sound collection unit 34 (step S160). When the melody sound is collected, the sound collection unit 34 outputs an audio signal s3 representing the melody sound. The audio processing unit 35 extracts the modulation signal s1 as shown in FIG. 8 from the audio signal s3 output by the sound collection unit 34, demodulates the extracted modulation signal s1, and displays “01101. .. ”Is generated (step S170). More specifically, the audio processing unit 35 first performs a filtering process on the audio signal s3 using a bandpass filter that transmits a band component having a predetermined width centered on the frequency used for the carrier wave c shown in FIG. To extract the modulated signal s1. Subsequently, the audio processing unit 35 demodulates the extracted modulation signal s1 by a method corresponding to the modulation method, and generates binary data d. That is, the voice processing unit 35 extracts the binary data d of the electronic lock ID from the voice signal output by the sound collection unit 34. Then, the voice processing unit 35 supplies the generated binary data d as an electronic lock ID to the CPU 31a.

  When the electronic lock ID is supplied, the CPU 31a collates this electronic lock ID with the electronic lock ID stored in the ROM 31b (step S180). If the two do not match, it means that the user who pressed the operation button 32 is not a valid user, so the CPU 31a transmits an error message or the like from the communication unit 33 to the management apparatus 10, for example. Then, this process ends. On the other hand, if both the electronic lock IDs coincide with each other, it means that the user who pressed the operation button 32 is a valid user, and therefore the CPU 31a unlocks the electronic lock 3 (step S190). Thereby, the user can open the door 2.

  According to the embodiment described above, even if the operation button 32 of the electronic lock control device 30 is pressed by a person other than the authorized user, the authorized user possesses the electronic lock ID of the electronic lock control device 30. Therefore, a person other than the authorized user cannot unlock the electronic lock 30. That is, the risk that the electronic lock 3 is illegally unlocked by a person other than the authorized user can be reduced. Further, since the electronic lock 3 is not provided with a keyhole, there is no fear that a criminal act such as picking will be performed. Furthermore, since the electronic lock 3 does not require a key to be inserted into a keyhole unlike a conventional lock, it can be easily unlocked even in the dark.

[Modification]
The above is the description of the embodiment, but the contents of this embodiment can be modified as follows. Further, the following modifications may be combined as appropriate.
(Modification 1)
In the embodiment described above, only one management device 10 is provided. However, instead of this management device 10, two management devices 10A and 10B are provided, and the functions of the management device 10 are changed to these management devices 10A, It may be dispersed in 10B. In this case, the management device 10A includes a third communication unit that communicates with the management device 10B in addition to the control unit 11, the first communication unit 12, and the storage unit 14 described above. In addition to the control unit 11, the second communication unit 13, and the storage unit 14 described above, the management device 10B includes a fourth communication unit that communicates with the management device 10A. That is, the management device 10A is connected to the network N and is in charge of communication with the electronic lock control device 30, and the management device 10B is connected to the telephone network M and is in charge of communication with the mobile phone 20. Become. At this time, the management table T may be stored in each of the storage unit 14 of the management apparatus 10A and the storage unit 14 of the management apparatus 10B, or may be stored only in the storage unit 14 of the management apparatus 10A. Next, an operation according to this modification will be described. 10 A of management apparatuses transmit the telephone number specified in step S40 to the management apparatus 10B from the 3rd communication part, after performing the process of step S30-S40 mentioned above. The management device 10B performs the above-described steps S50, S80, and S110 to S120 based on the telephone number transmitted from the management device 10A. Even with this configuration, the same processing as in the above-described embodiment can be performed.

  In this configuration, the management table T may be stored only in the storage unit 14 of the management apparatus 10B. In this case, the management device 10A transmits the electronic lock ID received in step S30 from the third communication unit to the management device 10B after performing the process of step S30 described above. The management device 10B performs the processes of steps S40 to S50, S80, and S110 to S120 described above based on the electronic lock ID transmitted from the management device 10A. According to this configuration, even when a management device is provided for each different network, the same processing as in the above-described embodiment can be performed.

(Modification 2)
In the embodiment described above, the CPU 11a of the management device 10 may count the time from when the mobile phone 20 is called in step S50 until a response is made, and stop calling the mobile phone 20 when a predetermined time has passed. . This is because if it is a legitimate user who pressed the operation button 32 of the electronic lock control device 30, it is known that his / her mobile phone 20 is called, so there is no need to call for a long time. In addition, if the operation button 32 of the electronic lock control device 30 is pressed by a person other than the authorized user, this call is unnecessary for the authorized user. Further, in this configuration, when the CPU 11a of the management apparatus 10 does not respond from the mobile phone 20 even after a predetermined time has passed, the first communication unit 12 sends notification information to that effect to the electronic lock control. You may transmit to the apparatus 30. In this case, the electronic lock control device 30 is provided with notifying means for notifying the occurrence of an abnormality by image, sound or light emission, and when the notification information is transmitted from the management device 10, the notifying means generates an abnormality. To inform.

(Modification 3)
In the above-described embodiment, time limit information indicating a time limit for time-out is added to the electronic lock ID transmitted from the electronic lock control device 30, and when the time limit has passed, the above-described processing is stopped. May be. In this case, in step S20, the CPU 31a of the electronic lock control device 30 adds time limit information indicating a time limit for time-out to the electronic lock ID stored in the ROM 31b, and transmits it to the management device 10 from the communication unit 33. . For example, assuming that the predetermined time limit is within 10 minutes from the time when the operation button 32 is pressed, when the operation button 32 is pressed at “13:00”, “13:10” is 10 minutes after that. Is added to the electronic lock ID. When the electronic lock control device 30 performs the process of confirming the time limit of the electronic lock ID, the voice processing unit 35 obtains the electronic lock ID and the time limit information from the voice signal output by the sound collection unit 34 in step S170 described above. Extract. And CPU31a does not perform the process after step S180 mentioned above, when the time of "13:10" which the time limit information extracted by the audio | voice process part 35 represents. This is because, if it is a legitimate user who has pressed the operation button 32 of the electronic lock control device 30, all processing should be performed promptly, and therefore, until the time limit (timeout) is reached until step S170. This is because it is highly likely that the user has not pressed the operation button 32 of the electronic lock control device 30 when the above process is not performed.

In addition, the management device 10 may perform a process of confirming the expiration date of the electronic ID. In this case, when the time “13:10” indicated by the time limit information added to the electronic lock ID transmitted from the electronic lock control device 30 has passed, the CPU 11a of the management apparatus 10 passes the above-described step S120. If the electronic lock ID is not transmitted and this time has not passed, the electronic lock ID and the time limit information are transferred in the same manner as in the above-described embodiment.
Alternatively, the cellular phone 20 may perform processing for confirming the expiration date of the electronic ID. In this case, when the time “13:10” represented by the time limit information transferred from the management device 10 has passed, the voice processing unit 27 of the mobile phone 20 superimposes the electronic lock ID in step S140 described above. If this time has not passed, the electronic lock ID and the time limit information transmitted from the management apparatus 10 are acquired in the same manner as in the above-described embodiment, and the electronic lock ID is displayed in the audio signal representing the audio. And the deadline information is superimposed and output.
As described above, the process for confirming the expiration date of the electronic ID may be performed by any of the management device 10, the mobile phone 20, or the electronic lock control device 30, or may be performed by two or more devices. .

  Although an example in which a time within 10 minutes from the time when the operation button 32 is pressed is set as the predetermined time limit is described here, the present invention is not limited to this. For example, a time limit for timeout is set based on the time when the management device 10 receives the electronic lock ID, and the CPU 11a of the management device 10 adds the time limit information indicating the set time limit to the electronic lock ID to the mobile phone 20. You may send it.

(Modification 4)
In the embodiment described above, the password registered by a legitimate user is stored as the management table T in the storage unit 14 of the management apparatus 10, but the password storage location is not limited to the management apparatus 10. For example, a password registered by a legitimate user may be stored in the ROM 31b of the electronic lock control device 30. In this case, the CPU 31a of the electronic lock control device 30 reads the electronic lock ID and the password from the ROM 31b and transmits them from the communication unit 33 to the management device 10 in step S20 described above. Then, in step S110, the CPU 11a of the management apparatus 10 collates the password transmitted from the electronic lock control apparatus 30 with the password input by the user, and if both passwords match, the process of step S120. I do. According to this configuration, it is not necessary to collectively manage passwords registered by the user in the management apparatus 10. Also, instead of this password, biometric information such as a user's fingerprint, iris, and voice may be used as the user's authentication information.

(Modification 5)
In the embodiment described above, the electronic lock 3 is unlocked by collating the electronic lock ID, but a one-time password may be collated. In this case, the CPU 31a of the electronic lock control device 30 functions as a temporary information generating means, and every time it receives a press of the operation button 32 that is an operation for instructing the unlocking of the electronic lock 3, the CPU 31a Valid temporary information is generated as a one-time password for a period until the next operation is accepted or for a predetermined period after the operation is accepted. This temporary information is information composed of random letters and numbers. In step S20, the CPU 31a transmits the electronic lock ID stored in the ROM 31b and the generated one-time password from the communication unit 33 to the management apparatus 10.

  In this case, the CPU 11a of the management device 10 transfers the electronic lock ID and the one-time password transmitted from the electronic lock control device 30 in step S120 described above. The voice processing unit 27 of the mobile phone 20 acquires the electronic lock ID and the one-time password transferred from the management device 10 in step S140 described above, and modulates the acquired electronic lock ID and the one-time password. A modulation signal is generated, and this modulation signal is superimposed on an audio signal representing a melody sound and output. Further, the audio processing unit 35 of the electronic lock control device 30 extracts the modulation signal from the audio signal output by the sound collection unit 34 in step S170 described above, demodulates the modulation signal, and generates the electronic lock ID and the one-time password. And generate

Then, in step S180 described above, the CPU 31a of the electronic lock control device 30 collates the electronic lock ID in the same manner as described above, and the one-time password supplied from the voice processing unit 35, the generated one-time password, If both electronic lock IDs match and both one-time passwords match, the electronic lock 3 is unlocked. According to this configuration, it is possible to reduce the risk that a plurality of electronic locks 3 are unlocked simultaneously by a person who has illegally obtained the electronic lock ID stored in the ROM 31b of each electronic lock control device 30. .
Moreover, you may combine this modification 5 and the modification 3 mentioned above. In this case, the electronic lock ID transmitted from the electronic lock control device 30 is added with time limit information indicating a time limit for time-out in addition to the one-time password, and the processing is stopped when the time limit has passed. It becomes like this. Thereby, the security of the electronic lock 3 can be further enhanced.

(Modification 6)
In the embodiment described above, the electronic lock ID is transmitted to the mobile phone 20 after the password is verified by the management apparatus 10, but the verification of the password may be omitted. In this case, the CPU 11a of the management apparatus 10 transmits a connection request to which the electronic lock ID is added from the second communication unit 13 when calling the mobile phone 20 in step S50 described above. Then, the voice processing unit 27 of the mobile phone 20 acquires the electronic lock ID added to the connection request transmitted from the management device 10, acquires the modulation signal obtained by modulating the acquired electronic lock ID, and acquires the electronic lock ID. When the sound is emitted, the sound is emitted from the sound emitting unit 26 so as to be superimposed on the sound signal representing the incoming sound to be emitted. The addition of the electronic lock ID can be performed by a method similar to the existing technique for providing the calling number notification service. Thereby, the user can save the trouble of inputting the password, and the electronic lock ID can be transmitted promptly.

(Modification 7)
In the above-described embodiment, the management device 10 that collectively manages the plurality of electronic lock control devices 30 is provided. However, if it is not necessary to perform such collective management, the management device 10 may not be provided. Good. In this case, the electronic lock control device 30 is provided with a fifth communication unit that connects to the telephone network M and establishes communication with the mobile phone 20 via the telephone network M. The ROM 31b of the electronic lock control device 30 is a storage means, and is assigned to voice message information representing a voice message for the user of the mobile phone 20 or the own device, like the storage unit 14 of the management device 10 described above. A management table in which the “electronic lock ID”, the “phone number” of the mobile phone 20 possessed by the authorized user of the own device, and the “password” registered by the authorized user of the own device are associated with each other. Memorize etc. And CPU31a of the electronic lock control apparatus 30 performs the process of step S40-S50, S80, S110-S120 after the process of step S10 mentioned above. That is, the CPU 31a and the communication unit 33 cooperate to accept the electronic lock ID stored in the ROM 31b as the electronic lock ID when the operation button 32 receives an operation for instructing the unlocking of the electronic lock 3. It functions as a transmission means for transmitting to the telephone number stored in correspondence. According to this configuration, the same processing as that of the above-described embodiment can be performed without providing the management device 10.

(Modification 8)
In the above-described embodiment, the telephone number is used as the communication address of the mobile phone 20 possessed by a legitimate user, but the present invention is not limited to this. For example, when the mobile phone 20 has an electronic mail function, a mail address may be used instead of the telephone number described above. In this case, the CPU 11a of the management apparatus 10 transmits an e-mail in which the electronic lock ID is described to the e-mail address of the mobile phone 20 in step S120 described above. Then, the CPU 21a of the mobile phone 20 receives the electronic mail transmitted from the management apparatus 10 by the wireless communication unit 24, and acquires the electronic lock ID from the received electronic mail.

(Modification 9)
The electronic lock control device 30 described above may be applied to a door phone that notifies a visitor. Further, the electronic lock control device 30 and the electronic lock 3 may be formed as an integrated device. In order to enhance security, a biometric authentication device that performs authentication by reading a user's fingerprint, iris, voiceprint, vein, face shape, or the like may be provided in the electronic lock control device 30. In this case, the CPU 31a of the electronic lock control device 30 is electronic when the electronic lock IDs match in the verification in step S180 described above and the biometric authentication device authenticates the user. Lock 3 is opened.
In the above-described embodiment, the case where the communication terminal according to the present invention is applied to the mobile phone 20 has been described as an example. However, the present invention is not limited to this. Examples of the communication terminal according to the present invention include devices such as a PDA (Personal Digital Assistants) device and a card key having the configuration of the control unit 21, the wireless communication unit 24, the sound processing unit 27, the sound emitting unit 26, and the like. May be applied.

(Modification 10)
The processing of the voice processing unit 27 of the mobile phone 20 described above may be realized by a hardware circuit, or may be realized by the CPU 21a executing a program. Similarly, the processing of the voice processing unit 35 of the electronic lock control device 30 may be realized by a hardware circuit, or may be realized by the CPU 31a executing a program. Each program executed by the CPU 11a of the management device 10, the CPU 21a of the mobile phone 20, and the CPU 31a of the electronic lock control device 30 is a magnetic recording medium such as a magnetic tape or a magnetic disk, an optical recording medium such as an optical disk, or a magneto-optical recording. It may be provided in a state where it is stored in a computer-readable recording medium such as a medium or a semiconductor memory. It is also possible to download this program via a network such as the Internet.

It is a figure which shows typically the structure of the electronic lock control system which concerns on this embodiment. It is a block diagram which shows the structure of the management apparatus of the said electronic lock control system. It is a figure which shows an example of the management table memorize | stored in the said management apparatus. It is a block diagram which shows the structure of the mobile telephone of the said electronic lock control system. It is a block diagram which shows the structure of the electronic lock control apparatus of the said electronic lock control system. It is a flowchart which shows the process of the said electronic lock control system. It is a figure explaining the modulation process in the said mobile telephone. It is a figure explaining the superimposition process in the said mobile telephone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic lock control system, 10 ... Management apparatus, 11 ... Control part, 11a ... CPU, 11b ... ROM, 11c ... RAM, 12 ... 1st communication part, 13 ... 2nd communication part, 14 ... Memory | storage part, 20 ... Mobile phone, 21 ... control unit, 21a ... CPU, 21b ... ROM, 21c ... RAM, 22 ... operation unit, 23 ... display unit, 24 ... wireless communication unit, 25 ... sound collecting unit, 26 ... sound emitting unit, 27 ... Audio processing unit, 30 ... electronic lock control device, 31 ... control unit, 31a ... CPU, 31b ... ROM, 31c ... RAM, 32 ... operation buttons, 33 ... communication unit, 34 ... sound collection unit, 35 ... audio processing unit.

Claims (6)

A communication terminal and an electronic lock control device;
The communication terminal is
Superimposing means for acquiring the identification information transmitted from the electronic lock control device and superimposing the identification information on a sound signal representing the sound and outputting the sound information;
Sound emission means for emitting sound according to the audio signal output from the superimposing means,
The electronic lock control device
Storage means for storing the identification information assigned to the own device and the communication address assigned to the communication terminal in association with each other;
An operation means for accepting an operation by a user;
When the operation means accepts an operation for instructing unlocking of the electronic lock, the transmission means transmits the identification information stored in the storage means to the communication address stored in association with the identification information. When,
Sound collecting means for collecting the sound emitted from the sound emitting means of the communication terminal and outputting a sound signal representing the sound;
Extraction means for extracting the identification information from the audio signal output by the sound collection means;
An electronic device comprising: an unlocking control unit that unlocks the electronic lock when the identification information extracted by the extraction unit matches the identification information stored in the storage unit. Lock control system. A management device, a plurality of communication terminals, and a plurality of electronic lock control devices,
The management device
Communication address storage means for storing the identification information assigned to each electronic lock control device and the communication addresses assigned to any of the plurality of communication terminals in association with each other;
Communication address specifying means for acquiring the identification information transmitted from the electronic lock control device and specifying the communication address stored in the communication address storage means in association with the acquired identification information;
Transfer means for transferring the acquired identification information to the communication address specified by the communication address specifying means,
Each of the communication terminals
Superimposing means for acquiring identification information transferred from the transfer means of the management device, and superimposing and outputting the acquired identification information on a sound signal representing sound;
Sound emission means for emitting sound according to the audio signal output from the superimposing means,
Each of the electronic lock control devices
Identification information storage means for storing identification information assigned to the device itself;
An operation means for accepting an operation by a user;
When the operation means accepts an operation to instruct to unlock the electronic lock, identification information transmission means for transmitting the identification information stored in the identification information storage means to the management device;
Sound collecting means for collecting the sound emitted from the sound emitting means of the communication terminal and outputting a sound signal representing the sound;
Extraction means for extracting the identification information from the audio signal output by the sound collection means;
And the unlocking control means for unlocking the electronic lock when the identification information extracted by the extraction means matches the identification information stored in the identification information storage means. Electronic lock control system. The superimposing means of the communication terminal is
Outputting the identification information obtained by superimposing the acquired identification information on a voice signal representing a ring tone that is emitted when the identification information is acquired;
The electronic lock control system according to claim 1 or 2, wherein the sound emitting means of the communication terminal emits a ringtone according to the audio signal output from the superimposing means. The communication terminal is
An authentication information transmitting means for transmitting the authentication information input by the user;
The communication address storage means of the management device is
Storing the communication address assigned to the communication terminal and the authentication information registered in advance by the user of the communication terminal in association with each other;
The transfer means of the management device is stored in the communication address storage means in association with the authentication information transmitted from the authentication information transmission means of the communication terminal and the communication address specified by the communication address specifying means. 3. The electronic lock control system according to claim 2, wherein, when the authentication information matches, the acquired identification information is transferred to the communication address. The identification information transmitting means of the electronic lock control device adds time limit information indicating a predetermined time limit to the identification information stored in the identification information storage means and transmits the information to the management device,
The transfer unit of the management device does not transfer the identification information when the predetermined time limit represented by the time limit information added to the acquired identification information has passed, and the predetermined time limit has not passed. To transfer the identification information and the deadline information,
Alternatively, the superimposing unit of the communication terminal does not superimpose the acquired identification information when a predetermined time limit represented by the time limit information transferred from the transfer unit of the management device has passed. If the predetermined time limit has not passed, the identification information and the time limit information transferred from the transfer means of the management device are acquired, and the identification information and the time limit information are superimposed on the audio signal representing the sound and output. And
Alternatively, the extraction means of the electronic lock control device extracts the identification information and time limit information from the audio signal output by the sound collection means, and the unlock control means extracts the time limit extracted by the extraction means. The electronic lock control system according to claim 2, wherein the electronic lock is not unlocked when a predetermined time limit indicated by the information has passed. The electronic lock control device
Every time the operation means accepts an operation for instructing to unlock the electronic lock, a period of time from when the operation is accepted until the next operation is accepted, or a predetermined period from when the operation is accepted, is valid temporary information. Comprising temporary information generating means for generating
The identification information transmission means of the electronic lock control device transmits the identification information stored in the identification information storage means and the temporary information generated by the temporary information generation means to the management device,
The transfer means of the management device transfers the temporary information transmitted from the electronic lock control device and the acquired identification information,
The superimposing unit of the communication terminal acquires the temporary information and identification information transferred from the transfer unit of the management device, and superimposes and outputs the acquired temporary information and identification information on an audio signal representing audio. ,
The extraction means of the electronic lock control device extracts the temporary information and identification information from the audio signal output by the sound collection means,
The unlocking control means of the electronic lock control device matches the identification information extracted by the extraction means with the identification information stored in the identification information storage means, and is extracted by the extraction means. 3. The electronic lock control system according to claim 2, wherein the electronic lock is unlocked when the temporary information matches the temporary information generated by the temporary information generating means.

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