KR20010073910A - Door Lock/Unlock System Using Fingerprint Recognition and Secret Number Recognition, and Control Method thereof - Google Patents

Abstract

PURPOSE: A door lock/unlock system by introducing a combined system of verifying a fingerprint and a secret number and a method for controlling the same is provided, which make it possible for not only a user whose finger print can not be registered, but also visitors who is not registered at the system to use system of verifying a fingerprint and a secret number. CONSTITUTION: In the stage of S31, it is judged if a user opens a key pad cover or opens a fingerprint input cover and the fingerprint of the user is inputted to a fingerprint input pad. In the case(S32) of the fingerprint of the user without opening the key pad cover, the system manages the input fingerprint according to a fingerprint managing routine(S33). In the stage of S34, the key pad cover is opened and a start button and a number button is pressed, The system judges that the input number is two figures number or four figures number in the stage of S35. If the input number is four figures number, it is treated according to the secret number managing routine(S36). If the user inputs * and the fingerprint in the stages of S37, 38, the system judges if the fingerprint is in accord with the registered user ID in the stage of S39. If it is in accord with the registered user ID, the door is opened in the stage of S40 and it isn't in accord with the registered user ID, the system is finished after repeating three times in the stage of S41.

Description

Door Lock / Unlock System Using Fingerprint Recognition and Secret Number Recognition, and Control Method

The present invention relates to a door lock / unlock system adopting a fingerprint authentication and password authentication combined method and a control method thereof, and in particular to a user who cannot register a fingerprint by using a fingerprint authentication by a fingerprint recognition sensor and a password authentication using a keypad. The present invention relates to a door lock / unlock system employing a combination of fingerprint authentication and password authentication that enables a user to use a password and receive a user authentication using a password.

Recently, fingerprinting has been applied to many fields since modern fingerprinting was established by Edward R. Henry. In particular, fingerprints are widely used in the fields of salary, personnel, finance, criminal investigation and security as a powerful personal authentication means.

The personal authentication process using fingerprints consists of a classification process that classifies various fingerprints by type and a matching process that identifies a person. In addition, the personal authentication system of the fingerprint is one-to-one identification system (Identification System) that distinguishes the input fingerprint from among a plurality of registered fingerprints and the authentication to verify by comparing the registered fingerprint and the input fingerprint in a one-to-one. It is divided into Verification System.

On the other hand, the fingerprint has a number of feature areas in addition to the normal area of the fingerprint ridge (Ridge) with a precise direction. In this feature, the ridge progresses and breaks, and the shortcomings and the ridges are referred to as bifurcation, which are collectively referred to as the feature points of the fingerprint (Minutiae).

Generally, about 100-150 feature points are distributed on one finger, and each person has different kinds, positions, and directions. Therefore, the position and direction of these feature points can be used as a means of discriminating each fingerprint. Generally, if the feature points match 50-60% or more, the same fingerprint is judged. It is also possible to process.

In order to recognize the fingerprint, a preprocessing process for extracting a feature point of the fingerprint is generally performed, a direction pattern and a feature point extraction process used for matching and discrimination, and an identification and authentication process using the same.

Such an authentication system needs to satisfy several requirements to make a module easy and inexpensive and to be applicable in various cases.

First of all, in case of being mainly used independently such as various personal portable devices, vehicles, personal safes, doors of apartments or office buildings, fingerprint recognition algorithms that can be independently recognized and identified without being connected to a server or a control PC are always available. It is essential to be driven by a stand-alone type mounted on the module itself.

In addition, for the easy installation of the module, the smaller the size is as good as possible, and to be used for portable power supply by the battery must be possible, for this purpose, the system should be designed with low power supply and low power consumption. Moreover, since it is used only by individuals or by a specific number of people, it is desirable that the fingerprint recognition / authentication algorithm and system have a low installation cost even though the performance is somewhat degraded.

However, the conventional fingerprint recognition system has a problem in that the size of the module is large and the price is expensive, so that it is difficult to apply to various applications requiring miniaturization.

In consideration of this point, the present applicant uses a semiconductor fingerprint sensor in patent application No. 98-49106 (Nov. 16, 1998) to reduce the size of the module and to embed the fingerprint recognition algorithm into the battery. It has been proposed a fingerprint recognition system and a control method thereof that can be used as a stand-alone type by designing the system for low power consumption in order to enable driving.

However, the lock / unlock system of the door using the fingerprint recognition system has a type in which a semiconductor fingerprint sensor is integrally provided in the module, and the fingerprint recognition module is limited in application to various products because of its large size and thickness. This will follow.

In addition, in order to know whether a fingerprint touches the sensor, a circuit and a structure such as a separate sensor or a switch are required for the fingerprint sensor structure. Moreover, in the related art, the fingerprint sensor is exposed to the outside, and there is a risk of damage or failure due to external environment such as rain, snow or dust.

In addition, the door lock / unlock system employing the conventional fingerprint recognition system has been exposed to outsiders, especially since a power switch for starting the system and a plurality of keypads for performing fingerprint registration and deletion input are all exposed outside the door. Failure to operate the keypad roughly due to intentional or mischief by a child) may occur.

Moreover, the above-mentioned conventional technology could not extract a feature point enough to wear a finger so that the fingerprint input state could maintain an appropriate security level, or a relative or a third party who did not register a fingerprint could not enter or leave without the help of an insider. .

On the other hand, a number of digital door lock / unlock system has been proposed and used to unlock the door lock by entering a password on the keypad, but it is not suitable for use where a high security level is required. It was not suitable even if it could not be memorized.

Accordingly, the present invention has been made in view of the problems of the prior art, and its object is to enable the use of a user who cannot register a fingerprint by using a fingerprint authentication by a fingerprint recognition sensor and a password authentication using a keypad. It is to provide a door lock / unlock system and a control method thereof that can be conveniently used by visitors who have not been registered and can be authenticated using a password.

Another object of the present invention is to adopt a fingerprint authentication and password authentication combined method that can be operated by the user selectively select the operating mode of the system when a higher security is required and faster authentication is required by using a plurality of users A door lock / unlock system and a control method thereof are provided.

It is still another object of the present invention to provide a door lock / unlock system having a test mode that can be visually identified by scoring a user's fingerprint input state and referred to a mode setting of the system, and a control method thereof.

Another object of the present invention is to provide a door lock / unlock system having a security device that can set a door to a physical lock state at the same time as the user blocks the system from the inside, and a control method thereof.

It is another object of the present invention to output an alarm sound for notifying when the battery is exhausted when the internal battery for power supply of the system is exhausted, and to easily supplement the emergency power battery from the outside, and to prevent theft due to key loss and key duplication. The present invention provides a door lock / unlock system and a control method thereof.

1 is a perspective view showing a door lock / unlock system according to an embodiment of the present invention,

2 is an enlarged view showing a keypad disposed inside a keypad cover in the system of FIG. 1;

3 is a rear view of the system of FIG. 1, FIG.

4 is a front view illustrating a function button disposed inside the battery cover of FIG. 3;

5 is a left side view of the FIG. 1 system;

6 is a schematic block diagram of a door lock / unlock system according to an embodiment of the present invention;

7 is a flowchart showing a mode setting procedure according to the present invention;

8 is a flow chart showing the overall operation of the system according to the present invention;

9 is a flowchart showing a user fingerprint registration procedure according to the present invention;

10 is a flowchart showing a control procedure according to the fingerprint use mode according to the present invention;

11 is a flowchart showing a control procedure according to the password mode according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

One ; Door 10; External module

11; Outer housing 12; Fingerprint input cover

13; Fingerprint input pad 14; Keypad cover

18,23; Handle 19; External battery cover

20; Internal module 21; Inner housing

22; Battery cover 24; volt

25; Manual lock / unlock setting 26; safety device

30; Door locking mechanism 31; Door locking member

32; Fixing projection members 33,34; Pivot

41; Keypad 42; User function keys

43; Battery cover switch 44; Keypad cover switch

45; Internal battery 46; External emergency battery

47; Power supply circuit 50; CPU

51; First memory 52; Second memory

53; Fingerprint sensor 54; Actuator

56; Speaker 57; Buzzer

In order to achieve the above object, the present invention is a fingerprint recognition sensor that is installed on the outside of the door to generate the user fingerprint data when the user's fingerprint is in contact with the fingerprint input pad, and installed on the outside of the door of the user Data input means for inputting an identification number (ID) and a system password for a fingerprint; a mode setting means for setting an operation mode of the system and a registration and deletion mode of a new fingerprint and identification number installed in the door; And a first memory for temporarily storing data input from the fingerprint recognition sensor and data input means and data in signal processing, a second memory for registering feature point data of the fingerprint extracted from the fingerprint data; A third memory for registering a user identification number (ID) input from data input means, and the fingerprint data; A feature extraction algorithm for extracting the feature points, and a system control algorithm for overall system control including a fingerprint management algorithm and a system mode setting that define a processing procedure related to registration, deletion, and authentication of a fingerprint and a user identification number. A fourth memory for storing a program, a feature point of a fingerprint is extracted from the input fingerprint data, and the extracted feature point data and a user's identification number through the data input means are registered in the second and third memories, and the system mode is set. System control means for performing a user authentication with a fingerprint only in the fingerprint mode and a user with either a fingerprint or a password according to the user's selection in the case of the fingerprint mode and generating a control signal according to the authentication result; Even if operated according to the authentication result of the control means The locking member provides a door lock / unlock system, it characterized in that the door is configured by the forward / backward Sikkim door lock / unlock actuator for setting a lock / unlock status.

When the user's fingerprint is input, the system control means determines the fingerprint registration level by determining the fingerprint input level according to the number of extracted feature points.

In addition, in the fingerprint / password mode, the system control unit may determine whether to authenticate by comparing the fingerprint of the registered identification number with the input fingerprint when the user inputs the identification number and the fingerprint.

Furthermore, the system is installed inside the door to manually lock / unlock the device for setting the door to the locked / unlocked state by manually moving the door locking member forward / reverse, and the system in an operable state and an inoperable stop state. It is preferable to further include a safety device for controlling the power supply of the system to set to any of the states.

According to another feature of the invention, the present invention comprises the steps of starting the system in conjunction with the user to open the fingerprint input cover or keypad cover, and if the user opens the fingerprint input cover to enter the fingerprint on the fingerprint input pad fingerprint According to the processing routine, the registered fingerprint is compared with the input fingerprint, and authentication is performed.If the keypad is opened and the start button and the number button are input, it is determined whether the input number is greater than or equal to the set digit. In the case of a number, authentication is performed according to the password processing routine. If the input number is the same number as the set position, the input number is recognized as the identification number of the user. Performing authentication according to the user's identification number and fingerprint according to the present invention; In one case, the door is set to the unlocked state by driving the actuator to reverse the door locking member. If the authentication fails, the door is kept in the unlocked state and the user is informed of the authentication result. It provides a door lock / unlock control method using a combination of fingerprint authentication and password authentication.

As described above, the present invention enables the use of a user who cannot register a fingerprint by using a fingerprint authentication by a fingerprint recognition sensor and a password authentication using a keypad. It is easy to use because it can be certified.

In addition, in the present invention, when a high security is required and when a plurality of users require faster authentication, the user may selectively select and operate an operation mode of the system, and input the fingerprint of the user using the test mode. The status can be scored and checked visually to refer to the system mode setting.

(Example)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing a door lock / unlock system according to a preferred embodiment of the present invention, FIG. 2 is an enlarged view showing a keypad disposed inside a keypad cover in FIG. 1 system, and FIG. 3 is a rear view of the system shown in FIG. 4 is a front view showing a function button disposed inside the battery cover in FIG. 3, and FIG. 5 is a left side view of the system of FIG. 1.

1 to 5, the door lock / unlock system of the present invention includes an external module 10 installed outside the door 1, an internal module 20 installed inside the door 1, It consists of a door locking mechanism 30 disposed between the outer and inner modules 10, 20.

The outer module 10 has a handle 18 rotatably supported at a lower portion of the outer housing 11, and a keypad cover 14 that is rotated upwardly about a hinge shaft 17 on an upper side of the housing 11. The light emitting diode (LED1) and the red light emitting diode (LED2) are disposed at the lower portion of the keypad cover 14, and the fingerprint input cover 12 having the fingerprint input pad 13 therein is disposed at the lower portion thereof. It is arranged.

When the keypad cover 14 is pressed at the lower center portion, the keypad cover switch 44 is turned on at the same time as the cover 14 is opened, and the cover switch 44 is closed when the cover 14 is closed. The OFF (OFF) turns off the system and at the same time the engaging projection 15 is inserted into and fixed to the pair of engaging pieces 16.

An emergency battery external battery cover 19 is disposed at a lower portion of the handle 18, the upper portion of which is opened by pivoting the lower portion of the lower portion according to rotation of a locking device (not shown) disposed at the lower portion of the outer housing 11. When the internal battery 45 for power supply of the system is exhausted due to a long trip, the cover 19 can be opened and the external emergency battery 46 can be replaced to restart the system to unlock the door. .

The inner module 20 has a handle 23 which is pivotally supported together with the handle 18 through the pivot shaft 33 at the lower portion of the inner housing 21, and the left side of the upper side of the housing 21. A battery cover 22 whose end is rotated about a pivot shaft 22a installed at the right end is disposed, and a lower part of the battery cover 22 operates the system by turning on / off the main power switch 26a for the system. The safety device 26 for setting to the enable state OPEN or the system operation stop state LOCK is slidably disposed left and right, and at the lower part thereof, when the safety device 26 is OPEN, In order to manually set the door locking member 31 to either the locked state or the unlocked state, a manual lock / unlock setting device 25 is rotatably provided.

Meanwhile, the pivot shaft 34 is rotated between the external module 10 and the internal module 20 according to the rotation of the manual lock / unlock setting device 25 to linearly move the door locking member 31 so that the door 1 The known mechanical door locking mechanism 30 is arranged to set the lock / unlock state.

The mechanism 30 also inserts or protrudes in conjunction with the rotation of the pivot shaft 33 when the handles 18 and 23 rotate so that the user can elastically support the opening and closing of the door 1 when entering and exiting. It includes a known fixing projection member (32).

In addition, the inner module 10 and the outer module 20 are fixed to the door 1 by the fixing of the plurality of bolts or screws 24 and the connection of the pivot shaft 33, 34, a plurality of wires 35 Is electrically connected).

The keypad 41 disposed inside the keypad cover 14 has a number button 41a, input confirmation and cancel buttons (*, #) 41b, starting from 0-9, as shown in FIG. and a start button 41c and an end button 41d.

In addition, the back surface of the battery cover 22 is provided with a receiving groove into which, for example, eight internal batteries (not shown) 45 can be mounted, and the inner housing 21 facing the battery cover 22 is provided. A user function key 42 consisting of a fingerprint registration button 42a, a delete button 42b, a test button 42c, a fingerprint button 42d, and a fingerprint / password button 42f as shown in FIG. Is arranged.

The door lock / unlock system according to the preferred embodiment of the present invention having the above described device structure is implemented as shown in FIG. That is, the keypad 41, the user function key 42, the battery cover switch 43, the keypad cover switch 44, the internal battery 45 and the external emergency on the input side of the CPU 50 for system control. The power supply circuit 47 connected to the battery 46 is connected.

In addition, an actuator 54 for setting the door locking member 31 to one of a locked state and an unlocked state by driving the mechanism 30 according to a fingerprint authentication or a password authentication result at the output side of the CPU 50, the fingerprint of the user. In the case of registration / authentication, password authentication, etc., the green light emitting diode (LED1) lights up when authentication is successful, the red light emitting diode (LED2) lights up when authentication fails. A speaker 56 and a buzzer 57 for notifying the result of the process by voice are connected.

Further, the CPU 50 is provided with a lock sensor 55 for detecting a lock / unlock state of the door locking member 31 and inputting a signal, and also provides a plurality of individual fingerprint recognition systems in one central control unit ( For example, RS-485 or RS-232 communication interface 58 may be combined as a communication means for controlling in the main PC). In this case, the central control apparatus can register a plurality of new fingerprint registration data to each system at a time by remote control by data communication, or modify the system control program so that a plurality of individuals can individually fingerprint multiple systems. This can save you the trouble of registering or maintaining a system.

On the other hand, the main power switch 26a for turning on / off the operating power supply (Vcc) for the system is inserted between the power supply circuit 47 and the CPU 50 according to the setting position of the safety device 26. It is. In addition, the present invention may be provided with an AC / DC adapter 48 for rectifying and supplying commercial AC power in addition to the power circuit 47 by the batteries 45 and 46 described above.

Further, the power supply circuit 47 performs a procedure such as fingerprint registration or fingerprint lookup for the system, and then, after a predetermined time elapses, the power supply circuit 47 according to the power off signal S _PO applied from the CPU 50. 47) to disable the system.

The fingerprint recognition sensor 53 is connected to the CPU 50 by a data bus and an address bus, and the fingerprint recognition sensor 53 is divided into a plurality of pixels. An input pad 13 is included. As the fingerprint recognition sensor 53, any kind of optical type, capacitive type, and thermal type can be used.

For example, when the fingerprint sensor is capacitive, at the moment when the user's finger contacts the fingerprint input pad 13, the CPU 50 designates each line of the input pad 13 sequentially through the address bus. The voltage is applied, and the fingerprint recognition sensor 53 generates an 8-bit digital signal having 256 gray levels as a residual current value that is changed according to the difference in contact resistance value for each pixel to generate a data bus. The ride is applied to the CPU 60.

In this system, a raw signal obtained from the fingerprint recognition sensor 53 is signaled to extract a feature point of a fingerprint, and a high-speed CPU ( 50), the CPU 50 preferably employs a 32-bit or higher high speed, low power consumption RISC chip.

The CPU 50 further includes a system program area 51a in which the system control programs shown in FIGS. 7 to 11 are stored, a fingerprint data area 51b in which registered fingerprint data is stored, and a registered user ID (ie, a password). Second memory 52 including a first memory 51 having an ID data area 51c stored therein, and a program execution area 52a and a fingerprint image buffer 52b for temporarily storing data being processed. ) Are connected via a data bus and an address bus, respectively.

The first memory 51 can register and delete fingerprint data and ID data at any time, and adopt a flash memory FMEM so that the stored data can be preserved even if the power consumption is cut off when the system is not driven. Preferably, the second memory 52 uses a RAM.

Hereinafter, the operation of the door lock / unlock system according to the preferred embodiment of the present invention described above will be described with reference to FIGS. 7 to 11.

7 is a flowchart showing a mode setting procedure according to the present invention, FIG. 8 is a flowchart showing the overall operation of the system according to the present invention, FIG. 9 is a flowchart showing the user fingerprint registration procedure according to the present invention, and FIG. FIG. 11 is a flowchart illustrating a control procedure according to the fingerprint mode according to the present invention.

First, the mode setting procedure according to the present invention will be described with reference to FIG. 7.

When the user opens the keypad cover 14 and the battery cover 22, the keypad cover switch 44 and the battery cover switch 43 are operated to set the power supply circuit 47 to the enabled state to start the system (S1). ). Then, when the user selects any one of the test button 42c, the fingerprint button 42d, and the fingerprint / password button 42e disposed inside the battery cover 22 (S2, S6, S8), the system in the corresponding mode. Is set.

For example, after the test button 42c is pressed (S2), the user's fingerprint is touched to the fingerprint input pad 13 while pushing the user's finger to the fingerprint input cover 12, and the fingerprint of the user is transferred to the CPU 50. By the fingerprint recognition sensor 53, it is recognized as a digital signal of 8 bits per pixel and stored in the fingerprint image buffer 52b of the second memory 52 (S3).

The CPU 50 stores the fingerprint data read for all pixels of the fingerprint recognition pad 13 in the same manner in the fingerprint image buffer 52b of the second memory (RAM) 52, and then stores the fingerprint data from the detected fingerprint data. Is extracted, and the fingerprint image is judged to be good based on the number of extracted feature points, and then scored to determine the registration possibility at a level of 1 to 6 (S4).

As a result of the determination, when the fingerprint level is in the range of 1 to 3, it is determined that registration is not possible and the number button of the corresponding keypad 41 lights up and at the same time a "beep" sound is generated from the buzzer 57 and the red LED 2 lights up. In accordance with the "fingerprint registration is not possible" notifies the voice message. However, if the fingerprint level is in the range of 4 to 6, it is determined that registration is possible, the corresponding keypad number is turned on, and a "piririri" sound is generated from the buzzer 57, and the green LED 1 is turned on, and "fingerprint registration is possible." "" Informs the voice message (S5).

After that, the system waits for a predetermined time, and when there is no subsequent input from the user, the power is turned off to end the process (S11).

Meanwhile, when the user presses the fingerprint button 42d or the fingerprint / password button 42e, the system is set to the "fingerprint mode" or the "fingerprint / password mode", respectively (S7, S9), and the system is set to the corresponding mode. The LED1, the speaker 56 and the buzzer 57 are used to inform visually and audibly (S10). After that, the system waits for a predetermined time, and when there is no subsequent input from the user, the power is turned off to end the process (S11).

When the system is set to "fingerprint mode", only the door 1 can be opened by authentication by fingerprint, and whether the system is set to "fingerprint / password mode", both fingerprint authentication and password authentication are possible. Mode. Therefore, the user can set and use the operation mode of the system in consideration of the security level of the place where the system is installed and visitors from the outside.

Hereinafter, a fingerprint registration and fingerprint deletion method will be described with reference to FIG. 9.

When the user opens the keypad cover 14 and the battery cover 22, the keypad cover switch 44 and the battery cover switch 43 are operated to set the power supply circuit 47 to the enabled state to start the system (S12). ). Then, when the user selects the registration button 42a disposed inside the battery cover 22 (S13), the system is set to the fingerprint registration mode.

Subsequently, the user inputs an ID (identification number, that is, a password) to be registered, for example, in two digits (01-99) as input (S14), and then the fingerprint input procedure, that is, the finger on the fingerprint input pad 13. In this case, the CPU 50 stores the input ID in the registration ID data area 51c of the first memory 51, and then recognizes the user's fingerprint and extracts the feature point through the same process as described above. The fingerprint data of the user is stored in the registered fingerprint data area 51b (S15).

At this time, if the fingerprint test judgment result before the user ID and the fingerprint data is stored, if the fingerprint level is in the range of 4 to 6, it is determined that registration is possible and a "piririri" sound is generated from the buzzer 57, and the green LED1 is turned on. Fingerprint registration is completed. "The corresponding data is stored in the first memory 51 while notifying the voice message. The user may remove his / her finger after LED1 turns on.

If the fingerprint level is in the range of 1 to 3, it is determined that registration is impossible and a "beep" sound is generated from the buzzer 57, and the red fingerprint "2" is turned on and the speaker "56 cannot be registered." At the same time as notifying the message, the input data is deleted from the buffer without being stored in the first memory (S16).

On the other hand, when the user tries to delete the registered fingerprint, the delete button 42b and the fingerprint button 42d are sequentially pressed (S17, S18), and when the individual user fingerprint is deleted, the user's ID and input confirmation " * "Button to delete the registered fingerprint corresponding to the ID (S19). In this case, when the entire registered fingerprint is deleted, all registered fingerprints are deleted by pressing the system "Password" and "*" (S20).

In addition, when canceling the processing procedure halfway, the "#" key is pressed.

When the deletion of the registered fingerprint is completed as described above, the system generates a "piririri" sound from the buzzer 57, the green LED 1 is turned on, and the voice message "Registered fingerprint has been deleted."

After that, the system waits for a predetermined time, and when there is no subsequent input from the user, the power is turned off to end the process (S22).

The overall operation of the system according to the present invention is described in detail below with reference to FIG. First, the system determines whether the user opens the keypad cover 14 or immediately opens the fingerprint input cover 12 and whether the user's fingerprint is input to the fingerprint input pad 13 (S31). If the user's fingerprint is input without opening the keypad cover 14 (S32), the system processes the input user's fingerprint according to the fingerprint processing routine S33 shown in FIG.

However, if the user opens the keypad cover 14 and then presses the start button 41c and then presses the number button 41a (S34), the system CPU enters the two-digit number input by the number button 41a. Recognition or two or more, for example, it is determined whether the four-digit (S35).

If the inputted number is 4 characters, it is determined that the password has been inputted and processed according to the password processing routine S36 shown in FIG. 11, and if the inputted number is 2 digits, the entered number is the user's password. That is, ID.

Subsequently, when the user inputs "*" and the fingerprint is input to the fingerprint input pad 13 (S37, S38), the system matches the fingerprint of the user ID registered in the first memory 51 with the inquired fingerprint. Determine whether (S39).

In this case, when the fingerprint input level is not satisfactory as described below with reference to FIG. 10, for example, the fingerprint input level is repeatedly processed about three times, and the determination is performed when a good fingerprint input level is obtained. .

As a result of the above judgment, if the inquired fingerprint matches the fingerprint of the registered user ID, a buzzing sound is generated from the buzzer 57, the green LED1 is turned on, and a voice message of "the door is opened." Open the door (S40).

In addition, even if it does not match, it is desirable to have a procedure for receiving re-entry three times in order to prevent authentication failure due to a user's mistaken input.In this case, if authentication fails, the system is forcibly shut down by shutting off the power. (S41).

As described above, in the present invention, the user may be authenticated using only a fingerprint or a password, or may be authenticated using a user ID and a fingerprint simultaneously.

Authentication using a user ID and a fingerprint at the same time takes a relatively shorter time than authentication using only a fingerprint. Therefore, it is desirable to perform authentication using a user ID and a fingerprint at the same time in a workplace of 100 or less people, not at home. However, when the number of users is 1000 or less, it is possible to simply change the system by setting the user ID to 3 digits, and a method of combining the user ID as the number of users increases may be usefully used.

Hereinafter, a fingerprint processing routine according to the present invention will be described in detail with reference to FIG. 10. First, when a user inputs a fingerprint to the fingerprint input pad 13, the CPU 50 reads the user's fingerprint into the fingerprint image buffer 52b as described above, extracts the feature point therefrom, and stores the extracted feature point (S52). .

Subsequently, the fingerprint input level is determined based on the extracted fingerprint recognition data, and if the fingerprint input level of the fingerprint to be inquired is not satisfactory, for example, the procedure is repeated three times to request re-entry. If a good level of fingerprint is input (S53).

Subsequently, it is searched whether the inquired fingerprint matches one of the fingerprints registered in the first memory (S54), and the user is notified of the authentication result. If the result of authentication is successful, the voice prompt informs the user of the successful "Door is open." At the same time, LED1 is turned on and the buzzer sounds "piririlik" corresponding to the successful authentication.

However, if the authentication fails in the search results, the authentication failure is voiced and at the same time the LED2 is turned on, the buzzer hears a "beep" sound corresponding to the authentication failure and requires re-entry (S60). Thereafter, if authentication fails continuously three times despite such re-entry, the system determines that the user is not a true user and automatically turns off the system to terminate the process (S62).

On the other hand, if the authentication is successful, the system, that is, the CPU 50 generates a control signal to the actuator 54 to excite the drive coil 54a to activate the mechanical door locking mechanism 30 to operate the door locking member 31. Is set from the locked state to the unlocked state by reversing (). After that, the user can rotate the handle 18 to open the door 1 to enter the room (S57). In this case, when the door does not open for a predetermined time even after the door locking member 31 is set to the unlocked state, the actuator 54 is operated to advance the door locking member 31 to set the locked state in the unlocked state. (S58).

Thereafter, the CPU 50 waits for a predetermined time and generates a power off signal S _PO in the power circuit 47 when there is no subsequent input from the user, thereby switching the power circuit 47 to the disabled state to shut off the system. The process is terminated (S62).

Hereinafter, the password processing routine according to the present invention will be described in detail with reference to FIG. 11. First, when the user opens the keypad cover 14 (S71), sequentially enters a start button (41c), a password and an end button (end) 41d (S72-S74), the CPU 50 It is determined whether the input password matches the password set in the system (S75).

If the result of the determination does not match, authentication fails for the user, and a red LED2 is turned on with a voice message requesting retry, and the buzzer is driven (S80). In this case as well, if three times as described above and still fails authentication, the power is shut down and terminated, and when the user presses the end button 41d and " * " (S81) (S82). Proceeds to end the processing.

In addition, if the determination result is identical, the doors may be opened by performing the steps S76-S79 in the same manner as the above-described steps S55-S58.

On the other hand, when the user changes the password of the system, the delete button 42b of the user function key 42 is pressed (S91), and then the conventional password and the "*" button 41b for input confirmation are pressed (S92). In response, the system informs the user visually whether the password entered is correct or incorrect (S93).

If the entered password is guided to be correct, the user continues to input a new password and "*" to change (S94). In response, the system prompts the user to enter a new password and " * " to change once again so that the user is familiar with the new password (S95).

If the new password and "*" is entered once again (S96), the system changes the password of the system with the new password if it matches the password entered first, and informs the user that the password has been changed (S97).

Thereafter, when there is no input from the user for a predetermined time, the CPU 50 generates a power off signal S _PO in the power supply circuit 47 to shut down the system to terminate the process (S82).

As described above, in the present invention, only the keypad 41 and the fingerprint input pad 13 necessary for the user to use the system are arranged on the front surface of the door 1, and the mode setting, fingerprint and ID registration / erase / change of the system are performed. The user function keys 42 necessary for the related operation, the control device and safety device 26 related to system control, such as the main power supply of the system, are disposed inside the door, whereby a malicious third party operates the system from the outside. It is possible to prevent unauthorized entry into the inside.

As described above, the present invention enables the use of a user who cannot register a fingerprint by using a fingerprint authentication by a fingerprint recognition sensor and a password authentication using a keypad. It is easy to use because it can be certified.

In addition, in the present invention, when a high security is required and when a plurality of users require faster authentication, the user may selectively select and operate an operation mode of the system, and input the fingerprint of the user using the test mode. The status can be scored and checked visually to refer to the system mode setting.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (7)

A fingerprint recognition sensor installed outside the door to generate user fingerprint data when the user's fingerprint contacts the fingerprint input pad; Data input means for inputting an identification number (ID) and a system password for a registered fingerprint of a user installed outside the door; A mode setting means installed in the door to set an operation mode of the system and a registration and deletion mode of a new fingerprint and identification number; A first memory for temporarily storing data input from said fingerprint recognition sensor and data input means and data being processed; A second memory for registering feature point data of the fingerprint extracted from the fingerprint data; A third memory for registering a user identification number (ID) input from said data input means; A system control algorithm required for overall system control including a feature point extraction algorithm for extracting a feature point from the fingerprint data, a fingerprint management algorithm and a system mode setting that define processing procedures related to registration, deletion, and authentication of a fingerprint and a user identification number. A fourth memory for storing a program including; Extract the feature point of the fingerprint from the input fingerprint data and register the extracted feature point data and the identification number of the user through the data input means in the second and third memories, and in the case of the fingerprint mode according to the set system mode, user authentication only with the fingerprint. System control means for generating a control signal according to a result of authentication by performing a user authentication with either a fingerprint or a password according to a user's selection in case of a fingerprint / password mode; And a door lock / unlock actuator configured to operate the door lock member in a locked / unlocked state by operating the door locking member forward or backward according to the authentication result of the control means. The door lock / unlock system according to claim 1, wherein the system control means determines whether a fingerprint is registered by determining a fingerprint input level according to the number of extracted feature points when a user's fingerprint is input. The door of claim 1, wherein the system control means determines whether to authenticate by comparing a fingerprint of a registered identification number with a fingerprint inputted when a user inputs an identification number and a fingerprint in a fingerprint / password mode. Lock / unlock system. The apparatus of claim 1, further comprising: a manual lock / unlock setting device installed inside the door to manually set the door to a locked / unlocked state by moving the door locking member forward / reversely; And a safety device for controlling the power of the system to set the system to either an operational state or an inactive state. The system of claim 4, wherein the power of the system is supplied by an internal battery disposed inside the door and an external emergency battery disposed outside the door, and includes a fingerprint input cover for covering the fingerprint input pad and the data input means. The door lock / unlock system is controlled in conjunction with the opening and closing of the keypad cover, and automatically shut off when there is no input for a certain time. Starting the system in association with the user opening the fingerprint input cover or keypad cover; If the user opens the fingerprint input cover and inputs the fingerprint on the fingerprint input pad, the fingerprint is compared with the registered fingerprint according to the fingerprint processing routine to perform authentication, and the keypad cover is opened to enter the start button and the numeric buttons. It is determined whether the input number is the set digit or more, and if the input number is the set digit or more, the input number is authenticated according to the password processing routine. If the input number is the same digit as the set digit, Recognizing the input number as the identification number of the user and performing authentication according to the identification number and fingerprint of the user according to a subsequent input of the fingerprint of the user; If the authentication is successful, setting the door to the unlocked state by driving the actuator to reverse the door locking member, and if the authentication fails, maintaining the door in the unlocked state and guiding the authentication result to the user. Door lock / unlock control method employing a combination of fingerprint authentication and password authentication, characterized in that consisting of. The method of claim 6, wherein when the user's fingerprint is input, the fingerprint input level is obtained according to the number of feature points extracted from the input fingerprint data, and registration and authentication of the input fingerprint is performed only when the set fingerprint input level is exceeded. Door lock / unlock control method characterized in that.