KR20060096201A - Electronic door lock using cellular phone as keypad, and method therefor - Google Patents

Abstract

The present invention relates to an electronic door lock using a mobile phone as a keypad and a method thereof. More specifically, the electronic door lock using the mobile phone as a keypad that receives a signal sound generated from the key input device of the mobile phone, converts it into a password, and compares it with a previously stored password to unlock the electronic door lock. And to a method thereof.

The present invention provides an electronic door lock for inputting a password using a mobile phone, comprising: a signal receiver 102 for receiving a key button signal input from the mobile phone; A signal amplifier 104 for amplifying the signal sound input from the signal receiver 102; An A / D converter 106 for converting the analog signal amplified by the signal amplifier 104 into a digital signal; Extracting a frequency component of the key button signal sound from the digital signal transmitted from the A / D converter 106, and determining the type of the key button signal sound according to the frequency component to determine the key button signal sound corresponding to the frequency component. A key button recognition unit 108 for recognizing a key button value of the; Main control unit 110 for controlling the overall operation of the electronic door lock; A power supply unit 112 for supplying power to the electronic door lock; A memory 114 for storing information necessary for the operation of the electronic door lock including a password; And a lock driving unit 116 for driving the lock 118 of the electronic door lock.

Digital Door Lock, Mobile Phone, Keypad, DTMF

Description

Electronic Door Lock Using Cellular Phone as Keypad, and Method Therefor}

1 is a block diagram of an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention;

2 is a detailed block diagram of a key button recognition unit in an electronic door lock using a mobile phone according to a preferred embodiment of the present invention;

3 is an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention, a perspective view showing an outer operation part of the electronic door lock having a means for preventing an external leakage of key button beeps;

4 is an internal configuration diagram of an outer operation unit of an electronic door lock having a means for preventing an outflow of key button signals in an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention;

5 is a flowchart illustrating a method of operating an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention;

Figure 6 is a flow chart illustrating a more specific operation method of the electronic door lock using a mobile phone as a keypad according to an embodiment of the present invention,

7 is a flowchart illustrating a method of registering a password for unlocking the electronic door lock as a mobile phone in the electronic door lock using the mobile phone as a keypad according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

102: signal receiver 104: signal amplifier

106: A / D conversion unit 108: Key button recognition unit

110: main controller 112: power supply

114: memory 116: lock driving unit

118: lock 200: frequency identification unit

210: key button identification unit 220: auxiliary memory (220)

300: outer operation unit 310: insertion groove

312: microphone 320: connection jack

402: cable 404: coil case

406: Elastic Coil

The present invention relates to an electronic door lock using a mobile phone as a keypad and a method thereof. More specifically, the electronic door lock using the mobile phone as a keypad that receives a signal sound generated from the key input device of the mobile phone, converts it into a password, and compares it with a previously stored password to unlock the electronic door lock. And to a method thereof.

An electronic door lock is a locking device that uses biometric information such as a password, a semiconductor chip, a smart card, a fingerprint or an iris, instead of a key that engages with a lock. The electronic door lock releases the lock only when the input information is matched with the information stored therein. Normally, the dead bolt is driven by using a solenoid or a motor. Lock or unlock the door lock.

Means commonly used as key input means of such an electronic door lock are numeric keypads having numbers 0 to 9 and '*' and '#' buttons. When the user enters a password on the keypad of the electronic door lock provided on the outside of the door, the electronic door lock compares the password stored inside and the input password and unlocks the door only when it matches.

However, a method of using a mobile phone as a means for inputting a password into the electronic door lock has been proposed in the past. According to the Republic of Korea Utility Model Registration No. 20-0295525, the electronic door lock receives the electronic door lock when the preset unique number and ID are transmitted through the mobile phone in case of emergency or when the door opening part failure occurs due to a failure of the sensor or the like. Disclosed is a configuration to release the.

However, in such a technology, as a wireless communication method is used, a separate configuration for this is required for a mobile phone or an electronic door lock, thereby causing difficulties in economical efficiency and practical implementation.

Meanwhile, in Korean Patent Publication No. 2002-0006256, when one of a plurality of passwords stored in a mobile phone is selected by using a shortcut key of the mobile phone, the mobile phone outputs a DTMF (Dual Tone Multi Frequency) beep corresponding to the password, and the electronic door lock In the following description, the analog / electronic conversion unit interprets it as a password and describes the configuration to unlock the door lock by comparing with the password stored in the electronic door lock.

However, the following problems exist in such a configuration.

In the case of selecting a password using a shortcut key in a mobile phone, it is common not to output DTMF tones, and there is a problem in that a separate function must be added to the mobile phone.

In addition, not all mobile phones generate DTMF tones, and in some cases, when a button on the keypad of a mobile phone is pressed, a DTMF tone may be generated in addition to the DTMF tones. For example, in recent years, mobile phones increasingly use electronic signal sounds such as xylophone sounds, animal sounds, and human voices in addition to DTMF signals. Therefore, there is a problem in that the electronic door lock cannot be unlocked when the cellular phone does not support DTMF tone generation (for example, an LG cyan phone uses an LG-only electronic tone).

In addition, DTMF tones are transmitted to the outside through the air, which causes a problem that the password is leaked. In particular, a person who is trained to grasp the corresponding number after listening to DTMF tones will be able to listen to the tones and obtain a password immediately. In some cases, recording them and analyzing them using a DTMF decoder This may be possible.

On the other hand, when the loudness of the DTMF tones is not large enough, it is difficult to accurately recognize the receiving part of the electronic door lock, so that a malfunction of the device may occur or the electronic door lock may not be solved.

In order to solve the above problems, the present invention can be resolved by a mobile phone that is distributed in the market, and receives a variety of signal sounds generated from the key input device of the mobile phone to prevent it from leaking to the outside and can be delivered accurately, The purpose of the present invention is to provide an electronic door lock that uses a mobile phone as a keypad to improve the recognition rate and security to convert the password to a password and then compare the stored password with the electronic door lock.

In order to achieve the above object, the present invention provides an electronic door lock for inputting a password using a mobile phone, comprising: a signal receiving unit (102) for receiving a key button signal input from the mobile phone; A signal amplifier 104 for amplifying the signal sound input from the signal receiver 102; An A / D converter 106 for converting the analog signal amplified by the signal amplifier 104 into a digital signal; Extracting a frequency component of the key button signal sound from the digital signal transmitted from the A / D converter 106, and determining the type of the key button signal sound according to the frequency component to determine the key button signal sound corresponding to the frequency component. A key button recognition unit 108 for recognizing a key button value of the; Main control unit 110 for controlling the overall operation of the electronic door lock; A power supply unit 112 for supplying power to the electronic door lock; A memory 114 for storing information necessary for the operation of the electronic door lock including a password; And a lock driving unit 116 for driving the lock 118 of the electronic door lock.

In addition, the present invention provides a method for operating an electronic door lock to input a password using a mobile phone as a keypad, the method comprising the steps of: (a) receiving a key button tone from the signal receiving unit 102; (b) the signal receiving unit 102 comparing the key button signal with a normal loudness that can be recognized by a device; (c) the signal receiving unit 102 transmitting the key button signal to the signal amplifier 104 when the key button signal is louder than the normal sound; (d) amplifying the key button signal by the signal amplifier 104; (e) converting, by the A / D converter 106, the analog value of the amplified key button signal to a digital value; (f) determining, by the frequency identification unit 200, whether the converted key button tone is a DTMF tone; (g) If the key button beeps are the DTMF tones, the frequency identification unit 200 identifies the low and high frequencies of the DTMF tones, and if the key button tones are beeps other than the DTMF tones, the frequency of the corresponding tones is determined. Identifying; (h) identifying, by the key button identification unit, a key button value of the key button signal tone from the identified frequency of the key button tone; (i) determining, by the key button identification unit, whether the key button value of the identified key button tone is a number; (j) when the key button value is a number, the key button identification unit 210 stores the key button value in the auxiliary memory 220 and then waits for the next key button signal to be received by the signal receiver 102. When the key button value is not a number, the key button identification unit 210 determines whether the key button value is a value of a key input end signal (eg, *) or a key input correction signal (eg, #). Determining; (k) if the key button value is the value of the key input correction signal, the key button identification unit 210 erases the key button value stored in the auxiliary memory 220 and requests to re-enter the key button signal tone. Transmitting a key button value stored in the auxiliary memory 220 to the main controller 110 when the key button value is a value of the key input end signal; (l) determining whether the main controller 110 matches the key button value with a password stored in the memory 114; And (m) operating the lock driver 116 to release the lock 118 by the main controller 110 when the key button value matches the password, and operating the electronic door lock using the cellular phone as a keypad. To provide.

In addition, the present invention, the password registration method of the electronic door lock to enter a password using a mobile phone as a keypad, the method comprising the steps of: (a) the signal receiving unit 102 receiving a key button tone from the mobile phone; (b) the signal receiving unit 102 comparing the key button signal with a normal loudness that can be recognized by a device; (c) the signal receiving unit 102 transmitting the key button signal to the signal amplifier 104 when the key button signal is louder than the normal sound; (d) amplifying the key button signal by the signal amplifier 104; (e) converting, by the A / D converter 106, the analog value of the amplified key button signal to a digital value; (f) determining, by the frequency identification unit, whether the converted key button tone is a DTMF tone; (g) If the key button beeps are the DTMF tones, the frequency identification unit 200 identifies the low and high frequencies of the DTMF tones, and if the key button tones are beeps other than the DTMF tones, the frequency of the corresponding tones is determined. Identifying; (h) identifying, by the key button identification unit, a key button value of the key button signal tone from the identified frequency of the key button tone; (i) determining, by the key button identification unit, whether the key button value of the identified key button tone is a number; (j) when the key button value is a number, the key button identification unit 210 stores the key button value in the auxiliary memory 220 and then waits for the next key button signal to be received by the signal receiver 102. When the key button value is not a number, the key button identification unit 210 determines whether the key button value is a value of a key input end signal (eg, *) or a key input correction signal (eg, #). Determining; (k) if the key button value is the value of the key input correction signal, the key button identification unit 210 erases the key button value stored in the auxiliary memory 220 and requests to re-enter the key button signal tone. Transmitting a key button value stored in the auxiliary memory 220 to the main controller 110 when the key button value is a value of the key input end signal; And (l) storing the key button value transmitted from the key button identification unit 210 in the memory 114 as the password by the main control unit 110 as a keypad. Provide a password registration method.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 is a block diagram of an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention.

Electronic door lock 100 using a mobile phone according to the invention as a keypad, the signal receiving unit 102, the signal amplifier 104, A / D conversion unit 106, key button recognition unit 108, the main control unit ( 110, a power supply 112, a memory 114, a lock driver 116, and a lock 118.

The signal receiver 102 receives a key button signal input to the mobile phone. Here, the key button tones include both DTMF tones generated when a key button of a mobile phone is pressed or various key button tones set by a mobile phone manufacturer. The signal receiver 102 may use any device for receiving sound, but it is preferable to use a directional microphone for excluding noise in the surroundings.

The signal amplifier 104 amplifies the signal sound input from the signal receiver 102 to the required intensity.

The A / D converter 106 converts the analog signal amplified and transmitted from the signal amplifier 104 into an electronic signal or a square wave signal through a comparator.

The key button recognition unit 108 extracts a frequency component from the electronic signal transmitted from the A / D converter 106. If the frequency value is not constant or the amplitude is below a certain value, it is preferable to transmit the unrecognized signal to the main controller. The key button recognition unit 108 may use a DTMF decoder when the key button signal received from the signal receiver 102 is a DTMF signal, but in reality, the key button signal may be other than the DTMF signal. Therefore, it is necessary to determine the type of the input beep and to recognize the key button value corresponding to the corresponding key button beep according to the type of the input beep. The detailed configuration of the key button recognition unit 108 will be described later.

The main controller 110 is implemented with a general microprocessor and controls the operation of the entire electronic door lock.

The power supply unit 112 is a device for supplying power to the electronic door lock, and can be both an AC power supply and a DC power supply. Power supplied to the power supply 112 may be supplied from the outside of the electronic door lock, but may be supplied from a battery provided inside the electronic door lock.

The memory 114 may be a memory device such as a read only memory (ROM), a random access memory (RAM), a flash memory, an electrically erasable programmable ROM (EEPROM), or the like. Since the memory 114 stores various information including information for key authentication, it is preferable to use an inactive memory device whose contents are not erased even when power is not supplied.

The lock drive unit 116 is a device for locking or unlocking the lock 118 of the electronic door lock. The lock driving unit 116 includes an electric motor or a solenoid to move the lock 118 to the locked position and the unlocked position using electrical energy. When the key information input through the electronic door lock coincides with the information stored in the memory 114, the main control unit 110 unlocks the lock 118.

Next, the key button recognition unit 108 of the electronic door lock using the mobile phone as a keypad according to a preferred embodiment of the present invention will be described in more detail.

2 is a detailed block diagram of a key button recognition unit in an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention.

The key button recognition unit 108 according to the preferred embodiment of the present invention includes a frequency identification unit 200, a key button identification unit 210, and an auxiliary memory 220.

The frequency identification unit 200 separates and identifies the frequency of the key button signal tone transmitted from the A / D conversion unit 106. When the key button signal is a DTMF tone, the frequency identification unit 200 identifies the low frequency and the high frequency of the DTMF tone. When the key button tone is other than the DTMF tone, the frequency of the tone is identified.

The auxiliary memory 220 stores key button values (numbers 0 to 9, *, #, etc.) according to the frequency of each key button beep.

The key button identification unit 210 compares the key identified by the frequency identification unit 200 with the key button value according to each frequency stored in the auxiliary memory 220, and identifies the key button value of the input key button tone.

In some cases, the auxiliary memory 220 stores frequency characteristics and key button values of frequencies corresponding to various types of key button signals generated from the mobile phone, and the key button identification unit 210 stores the frequency identification unit 200. It is also possible to identify the key button value with reference to the auxiliary memory 220 after identifying the type of key button tones input according to the characteristics of the frequency identified in the).

In this way, it is possible to identify the key button value of the corresponding signal tone regardless of whether the signal tone input to the signal receiver 102 is a DTMF tone or a separate tone.

In the above description has been described the internal configuration of the electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention. Next, in the electronic door lock using the mobile phone as a keypad according to a preferred embodiment of the present invention will be described a configuration for preventing the outflow of the mobile phone key button beep.

3 is a perspective view illustrating an outer operation unit of an electronic door lock having a means for preventing an external leakage of a key button signal in the electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention. In the electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention, it is an internal configuration diagram of the outer operation portion of the electronic door lock having a means for preventing the outflow of key button signal tones.

The electronic door lock includes an inner operation unit (not shown) provided inside the door 340 and an outer operation unit 300 provided outside the door 340, and the outer operation unit 300 is formed outside the door 340. It is provided in the to perform the function of receiving a key input for unlocking the electronic door lock 100.

The front portion of the outer operation unit 300 is provided with an insertion groove 310 for inserting the mobile phone 330. The microphone 312 is provided inside the insertion groove 310, and the microphone 312 corresponds to the signal receiver 102 of FIG. 1.

In order to release the electronic door lock using the mobile phone 330, the speaker 332 of the mobile phone 330 is inserted into the insertion groove 310. The speaker 332 of the mobile phone 330 is typically provided at the upper end, so there is no problem in the implementation of the invention.

The insertion groove 310 may be provided to be inclined horizontally or upwards, in the case of the clamshell mobile phone 330 as shown in Figure 3 or 4 is inserted groove 310 is provided to be inclined upward. desirable. On the other hand, in the case of the recently released slide-type mobile phone it may be preferable that the insertion groove 310 is horizontal, in the case of the slide-type mobile phone, even if the insertion groove 310 is provided to be inclined upwards, great inconvenience in key input Since there is no, it is preferable that the insertion groove 310 is provided to be inclined upward to be applicable to all mobile phones. However, in the practice of the present invention, the angle provided with the insertion groove 310 is not limited to the above.

When the insertion groove 310 is provided, the key button signal sound of the mobile phone can be prevented from leaking to the outside while preventing the key button signal sound from being misreceived by external noise. In addition, it is possible to improve the recognition rate by keeping a constant distance between the effect of the insertion groove 310 and the distance between the transmission sound source and the microphone 312 of the mobile phone.

On the other hand, the insertion groove 310 is provided with a cover to prevent damage to the microphone 312 due to the loud sound or dust around the usual times, and to prevent the exposure of the insertion groove 310 to be closed when not in use It is preferable.

On the other hand, as another configuration it may be provided with a connection jack 320 as shown in FIG.

The connection jack 320 is connected to the socket for earphone (not shown) provided in the mobile phone 330.

When the connection jack 320 is connected to the earphone socket of the mobile phone 330 and the key button is pressed, the key button signal tone is transmitted through the connection jack 320 without being outputted to the speaker unit 332 of the mobile phone 330.

The connection jack 320 corresponds to the signal receiver 102 of FIG. 1, and the key button beep of the mobile phone 330 is transmitted to the signal amplifier 104 of the electronic door lock through the connection jack 320.

However, when the connection jack 320 is fixed, it may be difficult to connect the connection jack 320 to the earphone socket of the mobile phone 330. Therefore, it is preferable to extend the connection jack 320 to the outside as shown in Figure 4 as a means for solving this.

The end of the connection jack 320 protrudes to the outside of the outer operation unit 300, the connection line 402 of the connection jack 320 is dried in a cylindrical coil case 404 provided inside the outer operation unit 300. An elastic coil 406 is provided inside the coil case 404. When the connection jack 320 is pulled, the coil case 404 rotates while the connection line 402 is released, so that the elastic coil 406 is together. Will rotate.

Since the elastic coil 406 functions as a coil spring having a restoring force by rotation, when the connecting jack 320 is released, the elastic coil 406 is returned to its original shape.

On the other hand, the connection jack 320 is configured to be extensible to the outside as described above, using a flexible material in the lower portion of the connection jack 320 or is configured to be bent in the left and right or up and down the connection jack 320. It is also possible.

Referring to the operation of the electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention.

5 is a flowchart illustrating a method of operating an electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention.

In order to input the password into the electronic door lock using a mobile phone, the electronic door lock enters a standby state (S500). In order to wait for the input of the electronic door lock, the electronic door lock may be provided with a button for input waiting. In some cases, when the electronic door lock is provided with a slidable cover, it is also possible to open the cover and send an input wait signal. Such a cover is preferably provided at a position capable of opening and closing the insertion groove 310 provided in the front portion of the outer operation portion 300.

The signal receiver 102 receives a key button signal tone from the mobile phone (S502). To this end, insert the mobile phone into the insertion groove 310 provided in the outer operation unit 300 of the electronic door lock, or insert the connection jack 320 into the earphone socket of the mobile phone, and then press the button provided on the keypad of the mobile phone key tone Generates.

The key button tones received from the signal receiver 102 are amplified by the signal in the signal amplifier (S504). In this case, the signal amplifier 104 preferably removes noise by filtering the input signal sound.

Thereafter, the A / D converter 106 converts the analog value of the key button tone to a digital value (S506).

The key button tone converted into a digital value is transmitted to the key button recognition unit 108, and the frequency identification unit 200 provided in the key button recognition unit 108 identifies the frequency of the input key button tone (S508). .

The key button identification unit 210 of the key button recognition unit 108 determines the type of the key button signal tones input from the frequency of the key button signal tones and refers to the frequency value of each key button stored in the auxiliary memory 220. The key button value of the button beep is identified (S510).

The main control unit 110 determines whether the key button value transmitted from the key button recognition unit 108 matches the password stored in the memory 114 (S512).

If the password according to the input key button tone matches the password stored in the memory 114, the main control unit 110 operates the lock driving unit 116 to release the lock 118 (S514).

If the password according to the input key button beeps does not match the password stored in the memory 114, a display window provided in the electronic door lock is provided to display a non-cancellation due to a password mismatch, or a warning sound or a beep sound may be generated. It is preferable to notify the user of the password mismatch (S516).

On the other hand, the operation method of the electronic door lock using the mobile phone as a keypad according to a preferred embodiment of the present invention in more detail as follows. At this time, the keypad dial tone of the cellular phone is assumed to be a dial tone other than a DTMF tone or a DTMF tone.

6 is a flow chart illustrating a more specific operation method of the electronic door lock using a mobile phone as a keypad according to a preferred embodiment of the present invention.

The electronic door lock enters a standby state for inputting a password into the electronic door lock using a mobile phone.

The signal receiver 102 receives a key button signal sound from the mobile phone (S600). To this end, after inserting the mobile phone into the insertion groove 310 provided in the outer operation unit 300 of the electronic door lock or inserting the connection jack 320 into the earphone socket of the mobile phone, pressing the button provided on the keypad of the mobile phone key tone Generates.

The signal receiver 102 compares the received key button signal with a normal loudness that can be recognized by the device (S602). If the magnitude of the key button signal tone is greater than or equal to the normal tone level, the signal receiver 102 transmits the key button signal tone to the signal amplifier 104. If the key button tone is less than the normal tone level, the signal receiver 102 requests re-entry of the key button tone (S604). At this time, the signal receiver 102 may display the key button beep re-input request signal through a display window provided separately in the electronic door lock.

The key button signal tone transmitted from the signal receiver 102 is amplified by the signal amplifier (S606). At this time, the signal amplifier 104 preferably removes noise by filtering the input signal sound.

Thereafter, the A / D converter 106 converts the analog value of the key button tone to a digital value (S608).

The key button tone converted into a digital value is transmitted to the key button recognition unit 108, and the frequency identification unit 200 provided in the key button recognition unit 108 determines whether the transmitted key button tone is a DTMF signal tone. (S610). If the key button tones are DTMF tones, the frequency identification unit 200 identifies the low and high frequencies of the DTMF tones (S612). If the key button beep is a tone other than the DTMF tone, the frequency of the tone is identified (S614). The identified frequency is transmitted to the key button identification unit 210 provided in the key button recognition unit 108.

The key button identification unit 210 determines the type of the key button beep from the frequency of the key button beep and identifies the key button value of the key button beep by referring to the frequency value of each key button stored in the auxiliary memory 220. (S616).

In general, a key button of a mobile phone is provided with an asterisk (*) key and a crosshatch (#) key in addition to the numeric keys. In the electronic door lock, the password is configured to enter a number. Therefore, in the door lock device replacing the keypad with the mobile phone according to the preferred embodiment of the present invention, when the user receives a password required for unlocking the door lock from the mobile phone, the user inputs an asterisk key after the user inputs the password. Can be configured to recognize that a key has been entered. On the other hand, the input key is not limited to the asterisk key so that the device recognizes that the password has been entered.

The key button identification unit 210 determines whether the key button value of the identified key button tone is a number (S618). When the key button value is a number, the key button identification unit 210 stores the number in the auxiliary memory 220 and waits for the next key button signal to be received by the signal receiver 102 (S620). At this time, the key button identification unit 210 may display the next key button beep input request signal through a display window provided separately in the electronic door lock.

If the key button value is not a number, the key button identification unit 210 determines whether the key button value is the value of the asterisk key or the cross hatch key (S622). If the key button value is the value of the cross hatch key, the key button identification unit 210 erases the key button value stored in the auxiliary memory 220 and requests re-entry of the key button beep (S624). At this time, the key button identification unit 210 may display the key button beep re-input request signal through a display window provided separately in the electronic door lock. If the key button value is the value of the asterisk key, the key button identification unit 210 transmits the key button value stored in the auxiliary memory 220 to the main control unit 110.

On the other hand, in the above description, the asterisk key is used as the key input end signal and the crosshatch key is used as the key input correction signal. However, in the embodiment of the present invention, the functions of the asterisk key and the crosshatch key may be interchanged. Do.

The main control unit 110 determines whether the key button value transmitted from the key button identification unit 210 matches the password stored in the memory 114 (S626).

When the password according to the input key button tone matches the password stored in the memory 114, the main control unit 110 operates the lock driving unit 116 to release the lock 118 (S628).

If the password according to the input key button beeps does not match the password stored in the memory 114, a display window provided in the electronic door lock is provided to display a non-cancellation due to a password mismatch, or a warning sound or a beep sound may be generated. It is preferable to notify the user of the mismatch of the password (S630).

On the other hand, it is also possible to register the password in the electronic door lock via the mobile phone.

7 is a flowchart illustrating a method of registering a password for unlocking the electronic door lock with the mobile phone in the electronic door lock using the mobile phone as a keypad according to a preferred embodiment of the present invention.

The electronic door lock is ready for password registration in order to register the password in the electronic door lock using the mobile phone. In order to wait for the password registration of the electronic door lock, the electronic door lock may be provided with a password registration button device.

After the information input through the mobile phone is converted from the electronic door lock to the key button value and transmitted from the key button recognition unit 108 to the main control unit 110, the electronic door lock using the mobile phone as the keypad described in FIG. Is the same as the case.

The main control unit 110 stores the key button value transmitted from the key button identification unit 210 in the memory 114 (S726).

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. It will be possible. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, there is an effect that the electronic door lock can be unlocked by receiving various signal tones including DTMF tones generated when the key button of the mobile phone is pressed to restore the password.

In addition, according to the present invention, by inserting the mobile phone into a predetermined insertion groove or connected to the digital door lock through the connection jack, the password can be input, so that the key button dial tone of the mobile phone can be effectively recognized as well as preventing external leakage. There is an effect that can provide an electronic door lock using a mobile phone with improved recognition rate and security as a keypad.

Claims (6)

In the electronic door lock to enter a password using a mobile phone, A signal receiver 102 which receives a key button beep input from the mobile phone; A signal amplifier 104 for amplifying the signal sound input from the signal receiver 102; An A / D converter 106 for converting the analog signal amplified by the signal amplifier 104 into a digital signal; Extracting a frequency component of the key button signal sound from the digital signal transmitted from the A / D converter 106, and determining the type of the key button signal sound according to the frequency component to determine the key button signal sound corresponding to the frequency component. A key button recognition unit 108 for recognizing a key button value of the; Main control unit 110 for controlling the overall operation of the electronic door lock; A power supply unit 112 for supplying power to the electronic door lock; A memory 114 for storing information necessary for the operation of the electronic door lock including a password; And The lock driver 116 for driving the lock 118 of the electronic door lock. Electronic door lock using a mobile phone including a keypad. The method of claim 1, The key button recognition unit 108, A frequency identification unit 200 for separating and identifying the frequency component of the key button tone transmitted from the A / D conversion unit 106 and a key button value according to the frequency component of the key button tone transmitted from the mobile phone. The stored key memory 220 and the frequency component identified by the frequency identification unit 200 are compared with the key button value of the key button signal to be input in comparison with the key button value corresponding to the frequency component stored in the auxiliary memory 220. Electronic door lock using a mobile phone as a keypad, characterized in that it comprises a key button identification unit for identifying the key button value (210). The method according to claim 1 or 2, One surface of the outer operation unit 300 of the electronic door lock is installed on the outside of the door is provided with an insertion groove 310 for inserting one end of the mobile phone, the interior of the insertion groove 310 as the signal receiving unit 102 Electronic door lock using a mobile phone as a keypad, characterized in that the function of the microphone 312 is provided. The method according to claim 1 or 2, The outer operation part 300 of the electronic door lock installed outside the door is provided with a connection jack 320 coupled to the earphone socket of the mobile phone, and the connection jack 320 functions as the signal receiver 102. Electronic door lock using your phone as a keypad. In the operation method of the electronic door lock to enter a password using a mobile phone as a keypad, (a) the signal receiving unit 102 receiving a key button beep from the mobile phone; (b) the signal receiving unit 102 comparing the key button signal with a normal loudness that can be recognized by a device; (c) the signal receiving unit 102 transmitting the key button signal to the signal amplifier 104 when the key button signal is louder than the normal sound; (d) amplifying the key button signal by the signal amplifier 104; (e) converting, by the A / D converter 106, the analog value of the amplified key button signal to a digital value; (f) determining, by the frequency identification unit 200, whether the converted key button tone is a DTMF tone; (g) If the key button beeps are the DTMF tones, the frequency identification unit 200 identifies the low and high frequencies of the DTMF tones, and if the key button tones are beeps other than the DTMF tones, the frequency of the corresponding tones is determined. Identifying; (h) identifying, by the key button identification unit, a key button value of the key button signal tone from the identified frequency of the key button tone; (i) determining, by the key button identification unit, whether the key button value of the identified key button tone is a number; (j) when the key button value is a number, the key button identification unit 210 stores the key button value in the auxiliary memory 220 and then waits for the next key button signal to be received by the signal receiver 102. When the key button value is not a number, the key button identification unit 210 determines whether the key button value is a value of a key input end signal (eg, *) or a key input correction signal (eg, #). Determining; (k) if the key button value is the value of the key input correction signal, the key button identification unit 210 erases the key button value stored in the auxiliary memory 220 and requests to re-enter the key button signal tone. Transmitting a key button value stored in the auxiliary memory 220 to the main controller 110 when the key button value is a value of the key input end signal; (l) determining whether the main controller 110 matches the key button value with a password stored in the memory 114; And (m) the main controller 110 releasing the lock 118 by operating the lock driver 116 when the key button value matches the password; Operation method of the electronic door lock using a mobile phone including a. In the password registration method of the electronic door lock to enter a password using a mobile phone as a keypad, (a) the signal receiving unit 102 receiving a key button beep from the mobile phone; (b) the signal receiving unit 102 comparing the key button signal with a normal loudness that can be recognized by a device; (c) the signal receiving unit 102 transmitting the key button signal to the signal amplifier 104 when the key button signal is louder than the normal sound; (d) amplifying the key button signal by the signal amplifier 104; (e) converting, by the A / D converter 106, the analog value of the amplified key button signal to a digital value; (f) determining, by the frequency identification unit 200, whether the converted key button tone is a DTMF tone; (g) If the key button beeps are the DTMF tones, the frequency identification unit 200 identifies the low and high frequencies of the DTMF tones, and if the key button tones are beeps other than the DTMF tones, the frequency of the corresponding tones is determined. Identifying; (h) identifying, by the key button identification unit, a key button value of the key button signal tone from the identified frequency of the key button tone; (i) determining, by the key button identification unit, whether the key button value of the identified key button tone is a number; (j) when the key button value is a number, the key button identification unit 210 stores the key button value in the auxiliary memory 220 and then waits for the next key button signal to be received by the signal receiver 102. When the key button value is not a number, the key button identification unit 210 determines whether the key button value is a value of a key input end signal (eg, *) or a key input correction signal (eg, #). Determining; (k) if the key button value is the value of the key input correction signal, the key button identification unit 210 erases the key button value stored in the auxiliary memory 220 and requests to re-enter the key button signal tone. Transmitting a key button value stored in the auxiliary memory 220 to the main controller 110 when the key button value is a value of the key input end signal; And (l) storing, by the main control unit 110, the key button value transmitted from the key button identification unit 210 as the password in the memory 114; Password registration method of the electronic door lock using a mobile phone including a.

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