JP2007277966A - Electric lock system using biological information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric lock system using biological information by which a user can perceive change with time of the finger vein pattern. <P>SOLUTION: The electric lock system unlocks electric locks 2, 6 mounted on a door 1 by taking the biological information of an individual by insertion of the finger into an authentication opening part 5, and conducting personal authentication by means of comparison with pre-registered biometric information of the corresponding individual. When the level of similarity between the pre-registered biological information and the biological information taken latest is below a preset threshold value, an alarm is emitted from a buzzer 3, and the pre-registered biometric information can be updated from the inside of the door 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a biometric information utilizing electric lock system that performs biometric information to perform personal authentication and unlocks a door of a house or the like.

  In recent years, crimes such as unauthorized intrusion into houses and theft are increasing. Some of these crimes can be prevented with slight caution, such as an intrusion through an unlocked window, but the usual precautions such as picking and other intrusions by opening the locked door. There are many things that cannot be prevented by themselves.

  In order to deal with such crimes, the door lock is changed to a more robust one, or it is changed to an electronic lock and personal authentication is performed before unlocking. As a method of unlocking an electronic lock by performing personal authentication, a method of using a magnetic card in which an identification code is recorded and a method of inputting a password have been widely used.

  However, if the magnetic card is lost, it may be illegally used by the acquirer and can be easily duplicated. Therefore, the magnetic card can be easily stolen, duplicated, and illegally used. In addition, identity authentication using a password can prevent fraud if a sufficiently long and complicated password is set, but if the password is complicated, there is a problem that the person cannot be remembered or forgotten. For this reason, in general, passwords are short and are often set with easy-to-remember characters, numbers, etc. that have some meaning such as their birthday. Therefore, there is a high possibility that it will be known by a person who tries to intrude illegally.

  In order to compensate for the drawbacks of the conventional electronic lock as described above, a method has been proposed in which authentication based on biometric information is performed, and unlocking is performed when the user is authenticated (see, for example, Patent Documents 1 to 3). ). Patent Document 1 discloses an electronic lock that authenticates the principal mainly by a fingerprint, and Patent Document 2 discloses an electronic lock that authenticates the person by inputting an identification number in addition to the fingerprint. Patent Document 3 discloses a technique that uses an IC card that records biometric information as a key.

  It is considered that personal authentication using biometric information has a great effect on prevention of unauthorized intrusion. However, even biometric information has been pointed out to be counterfeited, such as forged fingers, for some fingerprints. Therefore, in order to achieve a high unauthorized intrusion prevention effect, it is desirable to use biometric information used for authentication that cannot be collected unless a special device is used, such as a glow and a vein pattern.

For this reason, a technique for authenticating a person using a finger vein pattern has already been put into practical use. For example, Patent Document 4 discloses a personal authentication device that places a finger in a concave groove, irradiates infrared rays, images a vein blood vessel pattern, and performs authentication.
JP 2004-76277 A JP 2004-76278 A JP 2004-132073 A Japanese Patent No. 3558025

  Here, in the biometric authentication performed using the finger vein pattern, as in other biometric authentication, the finger vein pattern of the person is captured and registered in advance, and the finger vein pattern captured at the time of authentication is compared with the registered one. The degree of similarity is calculated, and when the degree of similarity satisfies a predetermined value such as a certain value (hereinafter referred to as “threshold”) or more, the person is recognized.

  However, the conventional biometric authentication performed using the finger vein pattern has a problem that the vein pattern changes with growth or the like, and the user may not be authenticated from a certain point in time. Even if the authentication fails due to such a change, the problem can be solved by asking the system administrator for help in a situation where the system administrator can be contacted relatively easily. However, in the biometric authentication for unlocking the door or the like at home, if authentication fails, a serious problem that the user cannot enter the home occurs.

  If it is a normal mechanical lock, it is possible to call a so-called locksmith to unlock it, but in the case of an electric lock, it is difficult to unlock by a normal method as much as unauthorized unlocking can be made difficult. Become. In particular, when living alone or when another family member is traveling, it may become a problem related to life or death.

  In view of the above situation, an object of the present invention is to provide a biometric information-based electric lock system that allows a user to perceive a change in finger vein pattern over time.

In order to solve the above problems, the present invention provides the following configurations.
The invention according to claim 1 is an electric lock system that collects personal biometric information, performs personal authentication by comparing with the corresponding preregistered biometric information, and unlocks the electric lock provided at the entrance. And when the similarity between the previously registered biometric information and the most recently collected biometric information falls below a preset threshold, a warning is given, and the preregistered biometric information is It can be updated from the inside of the entrance.

  The invention according to claim 2 is characterized in that, in the biological information utilizing electric lock system according to claim 1, the warning is made by voice.

  According to a third aspect of the present invention, in the biometric information utilizing electric lock system according to the first aspect, a time zone for performing the warning can be set.

  According to the first aspect of the present invention, a warning is issued when the similarity between the biological information registered in advance and the biological information collected most recently is equal to or lower than a preset threshold, and the biological information registered in advance Since the information can be updated from the inside of the entrance, it is possible to secure high crime prevention and to make the user perceive the change with time of the finger vein pattern.

  According to the second aspect of the invention, in addition to the effect of the first aspect, since the warning is made by voice, a biological information utilizing electric lock system capable of clearly perceiving the warning can be realized. .

  According to the invention of claim 3, in addition to the effect of claim 1, the warning time zone can be set, so that it is possible to avoid an inappropriate time zone such as midnight. A possible biometric information-based electric lock system can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples. FIG. 1 is a schematic diagram showing an embodiment of an electric lock system using biological information according to the present invention. The bio-information-use electric lock system according to the present invention can be attached to a detached house, each door of a condominium, an entrance of an office or the like, a door of an important place, and the like. Hereinafter, a case where it is attached to an entrance door of an apartment will be described as an example. .

  Fig.1 (a) is a perspective view for demonstrating the structure which provided the biological information utilization electric lock system in the entrance door. A lock (outdoor portion) 2 is attached to the door 1, a door knob 4 is attached to the lock (outdoor portion) 2, and an authentication opening 5 is bored. A door phone 3 is attached in the vicinity of the door 1. Here, the door knob 4 is used by a person to open and close the door 1, and is also installed on the indoor side of the door 1 although not shown. Hereinafter, the description of the door knob 4 in the drawing is omitted. The door 1 is provided with an electric lock (not shown) and can be locked. When the electric lock is unlocked from the outside, the biometric information is authenticated as described later. The description will be made assuming that it can be unlocked.

  FIG. 1B and FIG. 1C are schematic diagrams for explaining the configuration of the bio-information-based electric lock system when viewed from the outdoor side and the indoor side of the door 1, respectively. Moreover, FIG.1 (d) is typical sectional drawing about the AA 'line shown to FIG.1 (b) and FIG.1 (c). As shown in FIG. 1C, a lock (indoor portion) 6 and a display device 7 are provided on the door 1 on the indoor side of the electric lock system using biometric information.

  As shown in FIG. 1 (d), the authentication opening 5 is bored so as to penetrate the door 1, the lock (outdoor portion) 2, and the lock (indoor portion) 6. The authentication opening 5 is provided with an external door plate 8, an internal door plate 9, and an imaging region 10 for authenticating biometric information. The imaging area 10 comprehensively indicates an area where the finger vein pattern in the authentication opening 5 is imaged.

  FIG. 2 is a conceptual diagram for explaining the configuration in the authentication opening 5 shown in FIG. FIG. 2A is an enlarged view showing a schematic configuration in the authentication opening 5 when a finger is not inserted. The authentication opening 5 is further provided with a door plate latch 11, an elastic body 12, an imaging unit 13, and an infrared lamp 14.

  The door plate latch 11 is installed in the vicinity of the indoor / outdoor entrance in the authentication opening 5. The elastic body 12 is in contact with the external door plate 8 and the internal door plate 9 at both ends, and applies a force so as to press the external door plate 8 and the internal door plate 9 against the door plate locking tool 11. For this reason, in the normal state, the outer door plate 8 and the inner door plate 9 are in contact with the door plate locking tool 11. FIG. 2A shows this normal state.

  The infrared lamp 14 is a light source for irradiating the finger with infrared light. A part of the irradiated infrared light is reflected or scattered inside the finger and reaches the imaging unit 13. Since a part of the infrared ray irradiated to the vein is absorbed by the blood component, the vein pattern appears as a dark portion on the imaging unit 13. Since the finger vein pattern imaging principle and the finger vein pattern matching algorithm are well-known and commonly used techniques, further explanation is omitted.

  FIG. 2B is a diagram illustrating a state in which a finger is inserted from the outdoor side into the authentication opening 5 illustrated in FIG. As shown in FIG. 2B, when the outer door plate 8 is pushed with a finger, the elastic body 12 is shortened by an axial force applied from the outdoor side, and the outer door plate 8 is moved into the authentication opening 5. Pushed in. And the movement of the external door plate 8 stops in the state where the elastic body 12 has reached the shortest length that can be shrunk. In this state, when the finger is pulled out of the authentication opening 5, the elastic body 12 attempts to restore the original state, so the external door plate 8 is pushed outward and pressed against the door plate latch 11. Stand still. That is, the state returns to the state shown in FIG.

  FIG. 2C is a diagram illustrating a state in which a finger is inserted from the indoor side into the authentication opening 5 illustrated in FIG. As shown in FIG. 2C, when the inner door plate 9 is pushed with a finger, the elastic body 12 is shortened by an axial force applied from the indoor side, and the inner door plate 9 enters the authentication opening 5. Pushed in. And the movement of the internal door board 9 stops in the state which became the shortest length which the elastic body 12 can shrink. In this state, when the finger is pulled out of the authentication opening 5, the elastic body 12 attempts to restore the original state, so that the internal door plate 9 is pushed outward and pressed against the door plate latch 11. Stand still. That is, the state returns to the state shown in FIG.

  As described above, the elastic body 12 is adjusted so that the outer door plate 8 and the inner door plate 9 are positioned at appropriate positions in a normal state where no finger is inserted and in a state where the finger is inserted. Has been. Therefore, the elastic body 12 is not limited to the shape shown in FIG. 2, and may be configured using a spring, rubber, or other members.

  In the vicinity of the external door plate 8 and the internal door plate 9 in a normal state, as shown in FIGS. 2 (a), 2 (b), and 2 (c), a set of imaging unit 13 and infrared rays Each of the lamps 14 is installed. With this configuration, the finger vein pattern is imaged as described below. Here, the infrared lamp 14 is not lit in the normal state shown in FIG. 2A, but is lit when a finger is inserted and the external door plate 8 or the internal door plate 9 is moved by being pushed by the finger. The finger continues to be irradiated until the finger is pulled out of the authentication opening 5 and returns to the normal state (FIG. 2A) again. When the finger is inserted into the authentication opening 5 and goes deeper, the finger gradually passes over the imaging unit 13 on the entrance side, and the imaging unit 13 continues to partially image the finger from the tip side. Then, the external door plate 8 or the internal door plate 9 comes into contact with the door plate lock 11 and stops, and then the imaging unit 13 ends the imaging of the finger. And the vein pattern image of the whole finger | toe is decompress | restored by connecting the image obtained by imaging. Since a method for stitching together images obtained by imaging is well known, the description thereof is omitted. Here, in the authentication, a vein pattern from the first joint of the finger to the second indirect is often used, and the imaging may be limited to this portion.

  Note that the number, arrangement, and the like of the imaging unit 13 and the infrared lamp 14 need not be limited to the above configuration. For example, a plurality of imaging units 13 and infrared lamps 14 are installed as a set along the axial direction of the authentication opening 5 at regular intervals, and the external door plate 8 or the internal door plate 9 hits the door plate lock 11 and stops. You may comprise so that the predetermined part of a finger may be imaged in a state (state of FIG.2 (b) or FIG.2 (c)). With this configuration, it is not necessary to join the captured images, so that distortion and the like associated with the joining can be prevented. On the other hand, in the above configuration (FIG. 2) in which the imaging unit 13 and the infrared lamp 14 are arranged one by one, the number of parts is small, so that the configuration can be simplified and the occurrence of failure can be reduced.

  In addition, only one set of the imaging unit 13 and the infrared lamp 14 is installed in the vicinity of the center of the authentication opening 5 in the axial direction, and the same imaging unit when the finger is inserted from either the outdoor side or the indoor side. You may make it image using using. However, in this case, in order to be able to image the finger vein pattern from the first joint of the finger to the second indirect, the axial length of the authentication opening 5 is set to the second length from the tip of the finger. It is necessary to make it at least twice the indirect length. Therefore, it is preferable that the finger vein pattern from the tip of the finger to the first indirect is captured and used for authentication. By making the imaging unit 13 and the infrared lamp 14 into one set, the overall configuration can be further simplified. Here, by configuring the finger vein pattern from the tip of the finger to the first indirect to be acquired with high accuracy, the reliability of authentication can be improved.

  2A, 2B, and 2C, the infrared lamp 14 is described on the front side. However, a plurality of infrared lamps 14 may be provided as necessary. It may be placed in place.

  FIG. 3 is an explanatory diagram of an authentication opening according to another embodiment of the present invention. FIG. 3 shows a configuration in the vicinity of the authentication opening when viewed from the outer door plate 8 or the inner door plate 9 in the direction in which the finger is positioned. As shown in FIG. 3, the door plate locking tool 11 ′ may be provided in the lower part instead of in the upper part of the authentication opening.

The configuration in which the door plate locking tool is provided in the upper portion of the authentication opening is preferable because the door plate locking tool does not become an obstacle when a finger is inserted into the authentication opening. This is because the finger is usually inserted in contact with the lower surface of the authentication opening.
On the other hand, in the configuration installed in the lower part, the finger plate position can be fixed by making the door plate locking tool into a shape having a dent enough to fit the finger as shown in FIG. Can be prevented.
Moreover, in the structure installed in both the upper part and the lower part, the external door plate 8 and the internal door plate 9 can be stopped with higher positional accuracy.

  FIG. 4 is a diagram showing a configuration above the authentication opening according to an embodiment of the present invention. In FIG. 4, the description of components other than the outer door plate 8 and the inner door plate 9 is omitted from the viewpoint of ease of understanding. An external door plate terminal 15 and an internal door plate terminal 16 are attached to the upper portions of the external door plate 8 and the internal door plate 9, respectively. The external door plate terminal 15 and the internal door plate terminal 16 are respectively connected to the authentication opening 5. It protrudes into the space inside the door 1 through a slit provided in the wall surrounding the door 1. The external door plate terminal 15 and the internal door plate terminal 16 are conductors having a predetermined resistance value, and are movably in contact with the conductive wires 17a forming a part of the position detection unit. Here, the position detection unit includes a position detection circuit 17b and the conductive wire 17a. The external door plate terminal 15, the internal door plate terminal 16, and the conductive wire 17 a have resistance values that can secure position resolution, and the conductive wire 17 a is at the position of the external door plate terminal 15 and the internal door plate terminal 16. Accordingly, the resistance value viewed from the position detection circuit 17b side changes, for example, a metal rod having a uniform resistance value per unit length.

  As a result, when one of the external door plate 8 and the internal door plate 9 is pushed and moved by a finger inserted into the authentication opening 5, the corresponding external door plate terminal 15 or internal door plate terminal 16 becomes conductive. It moves along the line 17a, and the resistance value seen from the position detection circuit 17b side changes according to the moved position. That is, assuming that the resistance value in the normal state shown in FIG. 2A is the reference resistance value, the resistance value viewed from the position detection circuit 17b side gradually becomes the reference resistance value when the external door plate 8 is moving. It goes down and becomes the minimum in the state shown in FIG. Conversely, when the internal door plate 9 is moving, the resistance value viewed from the position detection circuit 17b side gradually increases from the reference resistance value, and becomes maximum in the state shown in FIG.

  Therefore, by measuring the resistance value viewed from the position detection circuit 17b side, the positions of the external door plate 8 and the internal door plate 9 can be detected, and in the authentication opening 5 according to the detected positions. The length from the tip of the finger can be detected. That is, the position of the imaging target portion of the imaging unit 13 from the tip of the finger can be known.

  Although a mechanism for locking and unlocking (hereinafter referred to as a locking mechanism) is not shown in FIG. 1, the locking mechanism is incorporated inside the door 1. Therefore, unless the lock (outdoor portion) 2 is broken by making a hole or the like, the locking mechanism cannot be operated and the door 1 cannot be opened illegally.

In the above description, the configuration in which the lock has the portion 2 protruding to the outdoor side of the door 1 has been described. FIG. 5 is a schematic view showing an embodiment in which there is no protruding portion of the lock on the outdoor side. 5 (a) and 5 (b) are schematic views for explaining the configuration of the bio-information-based electric lock system when viewed from the outdoor side and the indoor side of the door 1, respectively, and FIG. 5 (c). These are typical sectional drawings about the AA 'line shown in Drawing 5 (a) and Drawing 5 (b). In the configuration shown in FIG. 5, the outdoor side of the door 1 lock not provided (outdoor unit) and the knob, so that the authentication openings 5 ₂ is visible.

  In this configuration, the operation for imaging and locking and unlocking the finger vein pattern is the same as the operation described for the configuration shown in FIG. However, in the configuration shown in FIG. 5, since the lock (outdoor part) 2 shown in FIG. 1 is not provided outside the door 1, it is easy to protect the electric lock mechanism and the like from destruction. The prevention effect can be improved.

FIG. 6 is a schematic view showing another embodiment in which there is no protruding portion of the lock on the outdoor side. 6 (a) and 6 (b) are schematic diagrams for explaining the configuration of the bio-information-based electric lock system when viewed from the outdoor side and the indoor side of the door 1, respectively, and FIG. 6 (c). These are typical sectional drawings about the AA 'line shown in Drawing 6 (a) and Drawing 6 (b). In the configuration shown in FIG. 6, the outdoor side of the door 1 is not provided with the lock (outdoor unit) 2 shown in FIG. 1, in that the authentication openings 5 ₃ visible, is similar to that shown in FIG. 5 , As described below.

The operation for imaging and locking and unlocking the finger vein pattern in the structure shown in FIG. 6 is the same as the operation described for the configuration shown in FIG. Further, the configuration shown in FIG. 6 improves the effect of preventing unauthorized entry since the lock (outdoor portion) 2 shown in FIG. 1 is not provided outside the door 1 as in the configuration shown in FIG. Can do. However, in comparison with the configuration shown in FIG. 5, the lock can be shortened protrusion of the (indoor part) 6 ₃ indoor directions.

  Here, the electric lock constituting the bio-information-use electric lock system according to the present invention is provided inside the door 1 and operates in accordance with an instruction for locking or unlocking from a biometric authentication control processing unit described later. ing. As an electric lock, the structure which moves a deadbolt in a locking and unlocking direction using a motor, the thing of another structure, etc. can be used.

  FIG. 7 is a block diagram showing an embodiment of the electrical configuration of the biological information utilizing electric lock system according to the present invention. The biometric authentication control processing unit 30 includes a CPU 18, a memory 19, a recording device 20, an imaging control device 21, a finger position detection device 22, a locking / unlocking control device 23, a voice output control device 25, a display control device 26, and an input control device. 27. In the configuration shown in FIG. 7, the configuration units 18 to 23 and 25 to 17 are connected to be communicable with each other via an internal bus. However, the configuration is not necessarily limited to the configuration using the internal bus.

  The CPU 18 reads out software (hereinafter referred to as authentication software) stored in the recording device 20 and performs predetermined control processing and information processing. Specifically, the CPU 18 performs control of operation of the imaging control device 21 and the like, determination processing, and other processing.

  The storage device 20 stores authentication software 70, a biometric information registration file 80 that is referred to and updated by the authentication software 70, an environment setting file 90, and the like. In the biometric information registration file 80, finger vein patterns and the like of residents who unlock and enter the room are recorded. The environment setting file 90 records the operating environment of the biometric information-based electric lock system. The storage device 20 further stores other software and files necessary for the operation of the biometric information utilizing electric lock system.

  The memory 19 is used for the purpose of temporarily storing information necessary for executing the authentication software 70. Note that general-purpose personal computers may be used as the CPU 18, the memory 19, and the storage device 20.

  The imaging control device 21 controls the imaging unit 13 and the infrared lamp 14 to image a finger vein pattern. Specifically, the imaging control device 21 turns on or off the infrared lamp 14 in accordance with an instruction from the CPU 18, controls the imaging unit 13 to capture a finger vein pattern at regular intervals, and obtains an image ( Hereinafter, it is referred to as an imaging result image) to the CPU 18. The CPU 18 stitches together the imaging result images received from the imaging control device 21 in accordance with a command from the authentication software 70, and generates a finger vein pattern image of a portion necessary for authentication.

  The finger position detection device 22 receives a resistance value viewed from the position detection circuit 17b side from the position detection circuit 17, compares the resistance value with a reference resistance value, and determines whether or not a finger has been inserted. Processing such as the determination of the direction of insertion from the outdoor or indoor direction when it is determined that it has been inserted and the calculation of the inserted distance are performed. These determination processing and calculation processing are performed as needed, and the determination result and the finger position information which is the calculation result are returned as required in response to a request from the CPU 18. When the CPU 18 receives the imaging result image from the imaging control device 21, the CPU 18 requests the finger position detection device 22 to return the finger position information immediately after that, and the position is determined from the tip of the finger from which the imaging result image is obtained. You can know.

  In addition, when the difference between the time when the imaging result image is captured and the time when the CPU 18 receives the finger position information from the finger position detection device 22 becomes a problem, for example, the imaging control device 21 has a timing mechanism, and the imaging result image At the same time, the imaging time may be set to the CPU 18. However, the difference between the time when the captured image is captured and the time when the CPU 18 receives the finger position information does not cause a problem in operation if the finger speed during authentication is set in a predetermined range in advance.

  The position detector 17 is configured such that the external door plate terminal 15 and the internal door plate terminal 16 are in contact with the conductive wire 17a, and the resistance value viewed from the position detection circuit 17b side is transmitted to the CPU 18.

  The locking / unlocking control device 23 controls the locking / unlocking mechanism 24 in response to a request from the CPU 18 to move a deadlock (not shown) or the like to lock or unlock it, and in response to a request from the CPU 18. Information about whether it is locked or not. In addition, when information about the open / closed state of the door 1 is necessary, this information can be easily obtained by providing an infrared sensor in a door frame portion facing the side surface of the door 1, for example. Here, the locking / unlocking control device 23 and the locking / unlocking mechanism 24 are housed inside the door 1.

  The sound output control device 25 outputs a predetermined sound to the door phone 3 or makes a buzzer 29 installed in the room according to a request from the CPU 18. The audio output control device 25 also returns information on the current set volume or the like or changes the volume setting in response to a request from the CPU 18. Since the doorphone 3 and the buzzer 29 are well known in home doorphone systems and the like, further description is omitted. The doorphone 3 may be configured to reproduce sound stored in advance in the storage device 70 in response to a request from the CPU 18.

  The display control device 26 displays a screen on the display device 7 in response to a request from the CPU 18. In response to a request from the CPU 18, the display control device 26 returns information about the screen or the like being displayed by the display device 7, or changes settings such as the color of the screen. The display device 7 may display a screen stored in advance in the storage device 70 in response to a request from the CPU 18.

  The input control device 27 controls the touch panel 28. The touch panel 28 is mounted on the surface of the display device 7 and transmits position information of the touched portion to the input control device 27 when touched with a finger. The input control device 27 transmits the position information and the like transmitted from the touch panel 28 to the CPU 18. Further, in response to a request from the CPU 18, the current operation status of the touch panel 28 is transmitted.

  FIG. 8 is a diagram showing a data structure of a biometric information registration file used in the biometric information utilizing electric lock system according to the present invention. In the biometric information registration file 80, as shown in FIG. 8, a registration name 801, biometric information 802, threshold value 803, warning value 804, buzzer necessity 805, setting change availability 806, registration availability 807, change availability 808, re-registration Information for one set of whether permission 809 and deletion permission 810 is registered as many as necessary.

  The registered name 801 is information for storing who the registered biometric information 802, etc. belongs to, and who's finger, such as “Musume 1 Left Index Finger”. Is memorized. In addition, information for specifying a part such as “left” and “index finger” is stored separately from the registered name 801, and for example, which finger is to be authenticated when verification fails in an authentication process described later. It may be instructed by voice from the door phone 3.

  The biometric information 802 stores finger vein pattern information corresponding to the registered name 801.

  The threshold 803 is used in the finger vein pattern matching process. For example, when the similarity is equal to or higher than the threshold 803 (or exceeds the threshold 803), it is determined that the collation has been obtained.

  The warning value 804 is similarly used in the finger vein pattern matching process. For example, when the similarity is equal to or less than the warning value 804 (or less than the warning value 804), a warning is issued to the person to be authenticated. Here, the threshold value 803 and the warning value 804 are set so that the threshold value 803 is smaller than the warning value 804, and when the similarity is equal to or higher than the threshold value 803 but equal to or lower than the warning value 804, the above warning is issued. It is like that. In this case, it is determined that the finger vein pattern has changed from the time of registration. If the finger vein pattern is left as it is, the similarity becomes less than the threshold value 803 and authentication may not be performed. Therefore, the warning avoids this. ing.

  Note that instead of simply warning on the condition that the degree of similarity is equal to or lower than the warning value 804, the biometric information registration file 80 stores the authentication history of the person such as the degree of similarity at the time of the latest 20 authentications. The degree change may be approximated by a curve, and a warning may be issued when the change in the curve tends to decrease and the degree of similarity is equal to or less than the warning value 804. The warning is given by a voice message via the door phone 3.

  The buzzer necessity 805 is information for designating whether or not the buzzer 29 is sounded when a warning is issued, and is information referred to by the CPU 18. Specifically, the CPU 18 rings the buzzer 29 when the buzzer necessity 805 is “necessary”, and when the buzzer necessity 805 is “no”, even if the authentication fails. The buzzer 29 is controlled so as not to sound the buzzer 29. In the home where there is a family who is not accustomed to the operation such as a small child, by setting the buzzer necessity 805 to “necessary”, the parent who is in the middle when the warning is issued to the child etc. will be noticed Can be preferred. On the other hand, in the case of a family only family that can update biometric information such as adults, it is not necessary to bother the buzzer 29. Therefore, the buzzer necessity 805 may be set to “No”.

  The setting change enable / disable 806, registration enable / disable 807, change enable / disable 808, re-registration enable / disable 809, and deletion enable / disable 810 are all information for setting the system operation qualification of the person to be authenticated. Specifically, if a person who is not suitable for operation, such as a small child, can freely register or delete biometric information, it may lead to accidents such as accidental deletion of information. These pieces of information 806 to 810 may be set so that only a person who has can perform predetermined operations such as registration and deletion of biometric information.

  The setting change enable / disable 806 is information for setting whether or not the contents of the environment setting file 90 can be changed (“Yes” or “No”). Further, registration permission / inhibition 807 indicates whether or not a registration process described later can be performed (“permitted” or “not permitted”), change permission / inhibition 808 indicates whether or not change processing can be performed (“permitted” or “not permitted”), and re-registration permission / inhibition 809 indicates re-registration. Whether or not the registration process can be executed (“Yes” or “No”) is set, and whether or not the deletion process can be executed 810 is information for setting whether or not the deletion process can be executed (“Yes” or “No”).

  For each of setting change permission / inhibition 806, registration permission / inhibition 807, change permission / inhibition 808, re-registration permission / non-permission 809, and deletion permission / non-permission 810, a setting in which all persons registered in the biometric information registration file 80 are “No” is prohibited. , So that no one can perform the operation that is "no".

  FIG. 9 is a diagram showing a data structure of an environment setting file used in the biometric information utilizing electric lock system according to the present invention. The environment setting file 90 stores a notification necessity 901 and a notification required time zone 902. In the notification necessity 901, necessity of notification through the buzzer 29 is set, and in the notification necessity time zone 902, a time zone requiring this notification is set.

  When the notification necessity 901 is “necessary”, the buzzer 29 sounds when authentication fails, and when it is “no”, the buzzer 29 does not sound. In addition, when the notification necessity 901 is “necessary”, the time zone for ringing the buzzer 29 can be set to the notification time zone 902. Note that FIG. 9 illustrates a configuration example in which the notification required time zone 902 is one, but a plurality of notification required time zones may be provided so that a plurality of time zones can be set. It may be possible to set different time zones.

  In a home where there is a family unfamiliar with the operation of a small child or the like, by setting the buzzer necessity 805 to “necessary”, when the child fails the authentication, the parent in the child may notice that. Since it becomes possible, it is preferable. On the other hand, it is preferable to set the buzzer necessity 805 to “No” because it is possible to avoid the buzzer 29 from ringing due to mischief or the like.

  If the buzzer necessity 805 is “necessary”, a time zone for ringing the buzzer 29 may be set. With this configuration, it is possible to prevent the buzzer 29 from being sounded by mischief at midnight or the like.

  Further, when the authentication fails, when the notification necessity 901 is “necessary” and within the time set in the notification required time zone 902, a predetermined contact information such as a security service company with which a contract has been made is made. A contact may be sent. With this configuration, when an unauthorized intrusion is attempted, not only can the fact that authentication has failed be reported to the above contact information, but in the unlikely event that authentication cannot be performed, the lock can be unlocked. It becomes possible to get.

  Hereinafter, an operation of the biometric authentication control processing unit 30 relating to registration of a finger vein pattern and the like will be described. FIG. 10 is a flowchart for explaining biometric information registration and authentication in the biometric information utilizing electric lock system according to the present invention. Hereinafter, the display screen examples shown in FIGS. 11 to 17 will be described.

  When the biometric authentication control processing unit 30 is activated, the CPU 18 displays an initial screen on the display device 7 (S101). FIG. 11 is a diagram illustrating an example of an initial screen displayed on the display device 7. Next, the CPU 18 continues to wait for the operation of the external door plate 8 or the internal door plate 9 (that is, the finger is inserted and moved) (S102).

  Next, when the external door plate 8 or the internal door plate 9 is operated, the CPU 18 determines whether the external door plate 8 or the internal door plate 9 is operated. If there is, authentication processing is performed, and if it is the internal door plate 9, registration processing or the like is performed (S103). This is because, when entering from outside the room, authentication is required for unlocking, but when exiting from inside the room, it is necessary to open the door 1 freely, so it is not necessary to perform authentication. . Further, when the internal door plate 9 is operated from the room side, the operator does not intend to unlock, and therefore, biometric information registration processing or the like is performed in step S103.

  When the external door plate 8 is operated, the CPU 18 receives the imaging result images from the imaging device 13, joins them together to create a finger vein pattern image of a portion necessary for authentication, and records it in the biometric information registration file 80. The biometric information 802 is collated with all the biometric information 802 (that is, the similarity is calculated), and the biometric information 802 having the highest similarity is selected (S104). If there is a plurality of pieces of biological information 802 with the highest similarity, the plurality of pieces of biological information 802 are selected.

  Next, the threshold value 803 of each selected biometric information 802 is compared with the similarity obtained in step S104. If there is no similarity equal to or greater than the threshold 803, the authentication process is terminated (S105). In this case, a voice message such as “authentication failed” may be sent from the doorphone 3 and notified. Alternatively, a vibrator may be incorporated in the external door plate 8, power may be supplied via the external door plate terminal 15, and the vibrator may be vibrated for notification. By configuring in this way, it becomes possible for a visually handicapped person, a hearing-impaired person, etc. to know that the authentication has failed. In addition, the structure which provides such a vibrator | oscillator can be similarly implement | achieved even if it passes through the internal door board 9 and the internal door board terminal 16. FIG.

  In addition, an identification number is assigned to each biometric information 802 and recorded in association with the biometric information 802. For example, a small numeric keyboard is installed on the outside of the door 1, and the identification number is input using this. Thus, the biometric information 802 to be verified may be selected. By comprising in this way, collating with the biometric information 802 of a different person can be avoided.

  In step S105, the threshold value 803 of each selected biometric information 802 is compared with the similarity obtained in step S104. If there is a similarity equal to or greater than the threshold 803, the CPU 18 controls the locking / unlocking control device 23. Is instructed to unlock (S106).

  Next, in the case where there is a piece of similarity information whose threshold is not less than the threshold value 803 and not more than the warning value 804 among the selected pieces of biometric information 802 (S107), the CPU 18 reads from the intercom 3 that “matching is difficult” or the like. A voice message is played, and at the same time, a warning screen as shown in FIG. 17 is displayed on the display device 7 (S108).

  Next, the CPU 18 continuously closes the door 1 to the locking / unlocking control device 23 at a certain time interval (for example, 10 seconds) from the time when the certain time (for example, 30 seconds) has elapsed since unlocking. Is inquired and notified (S109). If the CPU 18 determines that a certain time (for example, 30 seconds) has elapsed since unlocking and the door 1 is in a closed state based on the notification received in step 109, the locking / unlocking control device 23 Is instructed to lock, and the authentication process is terminated (S110). If the notification that the door 1 is closed is not received after a long time (for example, 1 minute) since the unlocking, the CPU 18 sends a voice message such as “Please close the door” from the doorphone 3. Call attention.

  Hereinafter, processing when neither the outer door plate 8 nor the inner door plate 9 is operated will be described. The CPU 18 determines whether or not the screen being displayed on the display device 7 is a warning screen (S120). If the screen is not a warning screen (that is, an initial screen), the process returns to step S102. If the warning screen is being displayed, the CPU 18 determines whether or not “NO” has been touched (S121), and if not touched, the process returns to step S102. If touched, the CPU 18 displays the initial screen again on the display device 7 (S101).

  Next, processing when the internal door plate 9 is operated will be described. When the internal door plate 9 is operated, the CPU 18 determines whether the screen displayed on the display device 7 is an initial screen or a warning screen (S122). If the initial screen is displayed, processing such as registration, change, deletion, and re-registration (hereinafter referred to as registration update processing) is performed (S123). If the warning screen is displayed, re-registration is performed. Processing is performed (S124).

  First, the registration update process performed in step S123 will be described with reference to a screen example. First, since the internal door plate 9 has already been operated, the CPU 18 receives an imaging result image from the imaging device 13 and connects them to generate a finger vein pattern image of a portion necessary for authentication. Next, all registered names 801 recorded in the biometric information registration file 80 are extracted and displayed, for example, as shown in FIG.

  When the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected, and responds accordingly. The biometric information 802 to be collated (that is, similarity calculation) is performed.

  If the obtained similarity is less than the threshold value 803, the CPU 18 displays an error message on the display device 7 for a predetermined time (for example, 10 seconds), ends the registration update process, but not displayed on the display device 7. Display the initial screen again. When the similarity is equal to or greater than the threshold value 803, the CPU 18 displays a process selection screen shown in FIG. Here, the process displayed on the process selection screen is only a process in which the corresponding setting change enable / disable 806, registration enable / disable 807, change enable / disable 808, re-registration enable / disable 809, or delete enable / disable 810 is set to “permitted”. is there. This is because displaying processing that is not allowed to execute is harmful.

  When the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “new registration”) with a finger, the CPU 18 performs processing displayed on the touched portion.

  When the operator touches “Register New”, the CPU 18 displays the screen shown in FIG. Then, when the operator operates the software keyboard of 50 sounds displayed on the screen, inputs a registered name, and touches the “Next” button with a finger, the CPU 18 displays, for example, the screen shown in FIG. indicate.

  The operator can display each of the “Warning level”, “Warning buzzer necessity”, “Setting changeability”, “Registration availability”, “Changeability”, “Reregistration availability”, and “Deleteability” displayed on the screen. An item can be selected by touching a desired value with a finger. Here, since the values to be selected for the above items other than the warning level are the same as the setting contents of the biometric information registration file 80, the description thereof is omitted.

  Although the warning level corresponds to the warning value 804 of the biometric information registration file 80, the user cannot directly set the warning value for the similarity directly. Therefore, the warning level is selected in three stages of “tight”, “relaxed”, and “intermediate”. Specifically, when “tight” is selected, a relatively high value is set as the warning value 804, and when “relaxed” is selected, a relatively low value is set as the warning value 804. When “middle” is selected, an intermediate value is set as the warning value 804. For example, by setting “loose” for small children, it is possible to authenticate even when the finger placement is slightly shifted, and it is possible to prevent frequent warnings from being issued. .

  As for the setting value, a predetermined value may be set in advance, or a setting value corresponding to each selection may be provided in the environment setting file 90 so that a person having operation qualification can change it. However, in any case, it is necessary to set the threshold value 803 so as to satisfy the condition that it is less than the warning value 804. In the above description, the number of stages is three, but it may be two or five.

  Now, when the operator selects each item shown in FIG. 15 and touches the “next” button, the CPU 18 does not show in FIG. Is displayed in a message requesting to be inserted into the authentication opening 5. When the screen operator himself or a person other than the operator inserts a finger into the authentication opening 5, the CPU 18 acquires a captured image of the finger vein pattern. Then, each setting value input in a series of operations is recorded in correspondence with the biometric information registration file 80. Specifically, the registered name is the registered name 801, the acquired finger vein pattern imaging result image is the biometric information 802, the predetermined value is the threshold value 803, and the value corresponding to the selected warning level is the warning value 804. Buzzer necessity 805, setting change availability 806, registration availability 807, changeability 808, respectively corresponding to the selected warning buzzer necessity, setting change availability, registration availability, change availability, re-registration availability, and deletion availability availability, respectively. The information is recorded in re-registration availability 809 and deletion availability 810.

  When the above recording ends, the CPU 18 ends the registration process and displays an initial screen on the display device 7. When the operator touches the “Previous” button on the screen shown in FIG. 15, the CPU 18 displays the screen shown in FIG. 14 on the display device 7 again.

  When the operator touches “change” on the screen shown in FIG. 13, the CPU 18 displays the screen shown in FIG. 16 on the display device 7, for example. Here, when the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected. As shown below, the corresponding registered name 801 is changed.

  First, the CPU 18 displays the screen shown in FIG. However, the title of the screen is “Please change name” or the like, and the registered name 801 already registered is displayed as the registered name. When the operator operates the software keyboard of 50 sounds displayed on the screen, changes the registered name, and touches the “Next” button with a finger, the CPU 18 displays the screen shown in FIG. 15, for example. . However, the title of the screen is “Please change the setting value”, etc., and the value set in the warning value 804 or the like is selected as the setting value of each item (for example, the set value Change color etc.) The warning value 804 may be displayed in three stages of “tight”, “relaxed”, and “intermediate”.

  In addition, as described above, when “No” is set in all the registered names 801 for the setting change enable / disable 806, the registration enable / disable 807, the change enable / disable 808, the re-registration enable / disable 809, and the delete enable / disable 810, respectively. Since no one can execute the corresponding process, an error message is displayed on the display device 7 in response to such a change setting instruction.

  As in the registration process, when the operator selects each item in FIG. 15 and touches the “Next” button, the CPU 18 similarly uses the registered name input in the series of operations as the registered name. In 801, a value generated from the selected warning level is set as a warning value 804, and the selected warning buzzer necessity / non-setting change / registration / non-change / non-registration / deletion / deletion values are set for the buzzer. It is recorded (changed) in the necessity 805, setting change enable / disable 806, registration enable / disable 807, change enable / disable 808, re-registration enable / disable 809, and deletion enable / disable 810. When the recording is completed, the CPU 18 ends the registration process and displays an initial screen on the display device 7.

  When the operator touches “Re-register”, the CPU 18 displays, for example, the screen shown in FIG. 16 on the display device 7. However, the title of the screen shall be “Please select the re-registration target”. Then, when the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected. As described below, the corresponding biometric information 802 and threshold value 803 are re-registered.

  First, although not shown, the CPU 18 displays on the display device 7 a message requesting that the finger of the person to be re-registered be inserted into the authentication opening 5. When the re-registration target person inserts his / her finger into the authentication opening 5, the CPU 18 acquires a captured image of the finger vein pattern. The acquired image of the finger vein pattern is recorded (changed) in the biological information 802 and the predetermined value is recorded in the threshold 803. When the recording ends, the CPU 18 ends the re-registration process and displays an initial screen on the display device 7.

  When the operator touches “Erase”, the CPU 18 displays the screen shown in FIG. However, the title of the screen is “Please select the deletion target”. Then, when the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected. The information of the corresponding registered name 801 is deleted from the biometric information registration file 80.

  However, if there is no person who is “permitted” for each of the setting change permission / inhibition 806, registration permission / inhibition 807, change permission / inhibition 808, re-registration permission / inhibition 809, deletion is performed. First, an error message is displayed on the display device 7. When the deletion is completed, the CPU 18 ends the re-registration process and displays an initial screen on the display device 7.

  When the operator touches “change setting”, the CPU 18 displays the item names and setting contents of the environment setting file 90 on the display device 7 (not shown), and the operator inputs changes to this. It can be so. When the change input is completed and the operator instructs that, the CPU 18 sets the changed value in each item of the environment setting file 90. When the setting is completed, the CPU 18 ends the setting change process and displays an initial screen on the display device 7.

  Next, the re-registration process performed in step S124 will be described with reference to a screen example. In this case, for example, a warning screen shown in FIG. 17 is displayed on the display device 7 and the operator inserts a finger into the authentication opening 5 from the indoor side. The imaged image of the finger vein pattern of the part necessary for the authentication is created by connecting the imaged result images from the images and connecting them. Then, all registered names 801 recorded in the biometric information registration file 80 are extracted and displayed, for example, as shown in FIG. When the operator touches the corresponding part of the screen of the display device 7 (for example, the part displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected, and responds accordingly. The biometric information 802 to be collated (that is, similarity calculation) is performed.

  When the similarity obtained by the calculation is less than the threshold value 803, the CPU 18 displays an error message on the display device 7 for a predetermined time (for example, 10 seconds), but ends the re-registration process (S124). The warning screen is displayed again on the display device 7. When the calculated similarity is equal to or greater than the threshold value 803, the CPU 18 displays the screen shown in FIG. However, the title of the screen shall be “Please select the re-registration target”.

  Then, when the operator touches a corresponding portion of the screen of the display device 7 (for example, a portion displayed as “PAPA”) with the finger, the CPU 18 determines that the touched registered name 801 has been selected. As shown below, the corresponding biometric information 802 and threshold value 803 are re-registered. First, although not shown, the CPU 18 displays on the display device 7 a message requesting that the finger of the person to be re-registered be inserted into the authentication opening 5. When the re-registration target person inserts his / her finger into the authentication opening 5, the CPU 18 acquires a captured image of the finger vein pattern. The acquired image of the finger vein pattern is recorded (changed) in the biological information 802 and the predetermined value is recorded in the threshold 803. When the recording ends, the CPU 18 ends the re-registration process and displays an initial screen on the display device 7.

  Hereinafter, a configuration example in which the biometric authentication control processing unit 30 according to the present invention is connected to a network will be described. FIG. 18 is a conceptual diagram showing a configuration example in which a biometric authentication control processing unit according to the present invention is connected to a network. Each biometric authentication control processing unit 30 is connected to the lock management server 32 via the network 31 so as to communicate with each other. Here, the lock management server 32 is, for example, a server of a security guarantee company.

  With this configuration, when the authentication fails in any of the biometric authentication control processing units 30, the lock management server 32 can be notified. The lock management server 32 that has received the notification can send a message to a security worker or the like (not shown). By configuring in this way, for example, security personnel or the like operate the lock management server 32 after confirming the identity of the person who failed to authenticate using a mobile phone etc. An unlocking instruction is sent to the biometric authentication control processing unit 30, thereby making it possible to cope with unlocking and reducing the burden on the user.

It is a schematic diagram which shows one Example of the bioelectric information utilization electric lock system by this invention. It is a conceptual diagram for demonstrating the structure in the opening part 5 for authentication shown in FIG. It is explanatory drawing of the opening part for authentication which concerns on other one Example of this invention. It is a figure which shows the structure above the opening part for authentication which concerns on one Example of this invention. It is a schematic diagram which shows one Example which does not have the protrusion part of a lock | tablet in an outdoor side. It is a schematic diagram which shows another Example which does not have the protrusion part of a lock | tablet in an outdoor side. It is a block diagram which shows one Example of the electrical constitution of the bioelectric information utilization electric lock system by this invention. It is a figure which shows the data structure of the biometric information registration file used in the bioelectric information utilization electric lock system by this invention. It is a figure which shows the data structure of the environment setting file used in the bioelectric information utilization electric lock system by this invention. It is a flowchart for demonstrating biometric information registration and authentication in the biometric information utilization electric lock system by this invention. FIG. 10 is a diagram showing an example of an initial screen displayed on the display device 7. It is a figure which shows an example of the screen which displays a registration name. It is a figure which shows an example of the screen which displays the operation content. It is a figure which shows an example of the input screen which has a software keyboard. It is a figure which shows an example of the input screen of a setting value. It is a figure which shows an example of the screen which displays an authentication object person. It is a figure which shows an example of a warning screen. It is a conceptual diagram which shows the structural example which connects the biometrics authentication control process part by this invention to a network.

Explanation of symbols

1 door 2 locks (outdoor part)
3 Doorphone 4 Doorknob 5, 5 ₂ , 5 ₃ Opening for authentication 6, 6 ₂ , 6 ₃ tablets (indoor part)
7 Display device 8, 8 ₃ External door plate 9, 9 ₃ Internal door plate 10, 10 ₃ Imaging unit 11, 11 ′ Door plate lock 12 Elastic body 13 Imaging device 14 Infrared lamp 15 External door plate terminal 16 Internal door plate Terminal 17 Position detection unit 17a Conductive wire 17b Position detection circuit 18 CPU
DESCRIPTION OF SYMBOLS 19 Memory 20 Recording device 21 Imaging control device 22 Finger position detection device 23 Locking / unlocking control device 24 Locking / unlocking mechanism 25 Audio output control device 26 Display control device 27 Input control device 28 Touch panel 29 Buzzer 30 Biometric authentication control processing unit 31 network 32 lock management server 70 authentication software 80 biometric information registration file 90 environment setting file 801-810 setting values in biometric information registration file 901, 902 setting values in environment setting file

Claims (3)

It is an electric lock system that collects personal biometric information, performs personal authentication in comparison with pre-registered biometric information of the corresponding individual, and unlocks the electric lock provided at the entrance,
A warning is given when the similarity between the pre-registered biometric information and the biometric information collected most recently falls below a preset threshold value, and the pre-registered biometric information is displayed from the inside of the entrance. The bio-information-based electric lock system according to claim, which can be updated.   The bio-information-based electric lock system according to claim 1, wherein the warning is made by voice. The biological information utilizing electric lock system according to claim 1, wherein a time zone for performing the warning can be set.

Images