KR101046348B1 - Touch pad digital door lock and its unlocking method - Google Patents

Abstract

The present invention relates to a digital door lock device, which removes noise through a filter from a signal input from a touch pad and operates a long input signal and a short input signal by a timer to enhance security. The present invention relates to a touch pad digital door lock and a release method thereof capable of minimizing malfunctions.

Conventional touch pad type digital door lock device is frequently malfunctioned, there is a problem that the security is weak to prevent the leakage of the password, in order to solve the touch pad digital door lock according to the present invention in the door lock made of a touch pad In the filter, the timer can be used only for the long input signal whose signal value lasts more than 0.5s above the set value and the short input signal whose signal value lasts more than 0.5s below the set value. Pass through the A / D converter to pass through the A / D converter, and the A / D converter converts the long / short input signal passing through the filter into a digital signal, and delivers it to the MC U. The signal is classified into a long input signal and a short input signal and sequentially stored in the first memory, and stored in the first memory. Comparing the entered code with a preset password to the second memory, when the same by operating the drive system proposes a touchpad digital door lock, characterized in that for unlocking the door lock (unlock).

Accordingly, the touch pad digital door lock according to the present invention distinguishes long input signals and short input signals, thereby preventing leakage of passwords by a third party that is accompanied and filters the input passwords. Through primary storage in the first memory and then re-transmitted to MCU at once, there is an effect of preventing incorrect password input due to noise.

Touch pad, keypad, touch keypad, door lock, password,

Description

Touch pad digital door lock and its unlocking method {Door lock with touch pad and it's unlocking control process}

The present invention relates to a digital door lock device, which removes noise through a filter from an input signal and operates a long input signal and a short input signal by a timer, thereby enhancing security and preventing malfunction. The present invention relates to a touchpad digital door lock capable of minimizing and a method of unlocking the same.

In general, a touch pad is a flat pointing device that is designed to be operated by placing a finger on a surface. The touch pad is also called a track pad. These touchpads are used in place of mice or trackballs, which are used for movement of cursors or points in conventional computers, particularly in portable computers, because of their convenience. The touch pad measures a change in the reference frequency. For example, the touch pad is formed by stacking one layer thin film of the X-axis electrode, the three layer thin film of the Y-axis electrode, and the ground thin film. According to the principle of operation, when a human body in which minute capacitance flows to each X-axis and Y-axis, for example, a finger, touches, the frequency changes by the capacitance. Accordingly, the voltage of the reference frequency and the voltage of the changed frequency are measured differently, and the measurement position is obtained by the change of the voltage value.

Meanwhile, the conventional digital door lock device has a Ten-key input unit for password input, and the user first pushes the cover upward to activate the digital door lock device (WakeUp), and then inputs a preset password. Press the OK button (* or #) or close the cover downward to open and close the door.

At this time, when operating the digital door lock device to accompany the outsider, there was an inconvenience to enter the number with the ten key input unit covered by a hand or the like to hide the password to the outsider, or to complete the number input quickly so that the number cannot be memorized. .

In particular, the touch pad-type digital door lock device, which has recently been introduced in recent years, is made of a glass material with a ten key input part that is well fingerprinted, and repeatedly enters the same password, thereby increasing the risk of exposing the password to outsiders.

In order to prevent this, some companies prevented the leakage of passwords by granting 'imaginary operation function' and recognizing the input as before or after the password button is entered as 'imaginary'. The imaginary method as described above is also determined by inputting the password in a sequential manner according to the input order, and has a weakness in security for those who distinguish and remember before or after a specific button while carefully watching the user's input order. .

Meanwhile, in recent years, as a keypad door lock product having a touch pad coupled to a door lock is newly released, the market has attracted attention.

However, the touch pad door lock product has a problem in that a plurality of input numbers are simultaneously input in spite of the primary touch due to the nature of a sensitive touch pad when the adjacent passwords are pressed together or the noise is inputted. Like the digital door locks in the company, there was a risk of a password being leaked by a third party that accompanied it.

The present invention is to solve the above problems, the present invention is to distinguish the long input signal and the short input signal from the signal input from the touch pad, the first memory through filtering the input password The primary purpose of the present invention is to provide a touch pad digital door lock and its unlocking method, which can enhance security and minimize malfunctions by storing the primary data at a time and retransmitting it to MCU at a time and comparing it with a preset password in the second memory.

In the door lock equipped with a touch pad according to the present invention, a long input signal and a signal value lasting 0.5 s or more below a setting value in a filter transmitted from the touch pad in a signal value lasting more than 0.5 s. Only the short (short) input signal is passed through the timer and passed to the AD (A / D) converter, the AD converter converts the long and short input signal passed through the filter to the digital signal to MC The MC U divides the digital signal transmitted from the AD converter into a long input signal and a short input signal and stores the digital signal sequentially in the first memory, and compares the input number stored in the first memory with a preset password in the second memory. In the same case, the technical feature is to unlock the door lock by operating the driving device.

The touch pad digital door lock according to the present invention distinguishes a long input signal and a short input signal, thereby preventing a password from being leaked by a third party accompanying the user and filtering the input password. By first storing the data in the first memory 40 and re-transmitting them to the MC oil 50 at once, there is an effect of preventing incorrect input of the password due to noise or the like.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view schematically showing a touch pad digital door lock of the present invention, FIG. 2 is a state diagram of a touch pad digital door lock of the present invention, and FIG. 3 is an analog waveform diagram generated from a touch pad of the present invention and a digital signal thereof. FIG. 4 is a block diagram of a touch pad digital door lock according to the present invention. FIG. 5 is a signal classification table summarizing the number of cases appearing according to an input signal of a touch pad in the present invention. 6 is a flowchart illustrating an unlocking method of a touch pad digital door lock according to the present invention.

The touch pad (or touch keypad, hereinafter referred to as 'touch pad') of the present invention is used in the digital door lock, as shown in FIG. 1, which is installed at the outside of the door and has 10 numbers and special symbols (*, A touch panel 10 including a ten key button including #) is provided at the front side. The touch pad digital door lock 1 as described above locks and unlocks the door lock by rotating the locking tail (or dead bolt) of the inner body by a motor according to a password entered by the user.

The touch pad is an input device that is commonly used in electronic products recently. When a user touches a specific position, the touch pad generates a predetermined input value by a sensed pressure or static electricity.

However, as shown in FIG. 2, when the specific number is pressed, the touch pad has a high possibility of generating an unnecessary signal value by detecting an input to another nearby number.

In particular, in the case of a constant voltage type touch pad, as shown in FIG. 3, an unstable analog signal is generated by chattering or the like. In this case, the chattering is a phenomenon in which a contact is repeatedly attached and dropped within a very short time by a mechanical vibration when a contact of a switch or a relay in an electronic circuit is attached or dropped, which adversely affects the circuit. Should be removed.

In order to prevent this, in the present application, a setting value (signal size), which is a reference value, is specified in advance, and a filter which will be described later only when the value is greater than or equal to the setting value, is converted into a digital signal, and the user inputs the correct value. Identify passwords. In addition, the present application divides each number into a long signal and a short signal, so that the password is not exposed even when the other person is watching from the side.

That is, the door lock made of a touch pad according to the present invention has a signal among a plurality of input signals distinguished by a long input signal and a short input signal transmitted from the touch pad 10 as shown in FIG. 4. A filter 20 for passing only when the value is greater than or equal to the set value; An AD (A / D) converter 30 for converting a long / short input signal passed through the filter 20 into a digital signal; Receives a plurality of digital signals converted from the AD converter 30 to be divided into a long input signal and a short input signal sequentially stored in the first memory 40, the input number stored in the first memory 40 Compared to the password set in the second memory 41, it is configured to include the MC oil 50 to unlock the door lock by operating the drive device 60 in the same case.

The long input signal and the short input signal are determined depending on whether the signal value lasts more than or less than a set time, which can be easily implemented by adding a timer included in the MC 50 or an external timer. The filter 20 and the AD converter 30 are also well-known components generally used in conventional digital circuits, and thus, detailed descriptions thereof will be omitted.

As an embodiment of the present invention, the long input signal has a signal time that lasts more than a predetermined time (for example, 0.5s or more), and the short input signal has a signal time that lasts for less than a set time (for example, less than 0.5s). Separate by.

Therefore, even the same number is divided into a long input signal and a short input signal, thereby providing more cases than a limited combination of ten numeric buttons.

That is, as shown in Figure 5, assuming a password consisting of three numbers, the number of 2 ³ (8) cases occurs, considering that the same number is duplicated, even more password combinations are possible.

In particular, even the same number distinguishes the case of long press and the case of short press. Therefore, even if a third person watches from the side, it has the advantage of preventing the leakage of the password.

On the other hand, the password unlocking method of the digital door lock according to the present invention proceeds sequentially by the flowchart shown in FIG.

First, in step S10, a user inputs a password through the touch pad 10. In the MC 50, it is determined whether the magnitude (signal voltage value) of the input signal is greater than or equal to the set value, and when the signal value is less than or equal to the set value, the step S11 returns to the password input step. If the signal value is greater than or equal to the set value, step S12 is further performed to determine whether the duration (signal length) of the signal time is longer than the set time.

The comparison of the magnitude of the signal value with the set value is to prevent a malfunction in which not only the number that the user wants to input but also another adjacent number are simultaneously inputted by chattering or signal interference, which is common in a constant voltage touch pad. .

At this time, when the duration of the signal value is longer than the set time, the step (S13) of storing the long input signal of the corresponding number in the first memory 40 is performed, and if the duration of the signal value is less than the set time, In operation S14, the first memory 40 is stored as an input signal.

In addition, when the number inputted by chattering (including noise) and the adjacent number are simultaneously touched, and the input value of the signal is input at the same time, the first memory 40 considers only the largest signal value inputted first as a password. And other signals are ignored.

Subsequently, the input number (memory value) sequentially stored in the first memory 40 is retransmitted to the MC oil 50 (S15).

The MCU 50 compares the memory value transmitted from the first memory 40 with a password preset in the second memory 41 (S16), whereby the first memory value input by the user and the first memory value are determined. If the password set in the second memory 41 does not match, an error alarm is generated and a step (S17) of returning to the input standby state is performed, and the first memory value input by the user and the second memory 41 are written. If the set password matches, step S18 of operating the driving device 60 to unlock the door lock is performed.

In this case, it is preferable that the second memory 41 uses a nonvolatile memory such as an EEPROM so that the user can change the password.

As described above, by inputting the long input signal and the short input signal separately, the password is prevented from being leaked by the accompanying third party, and the input password is first stored in the first memory 40 through filtering. By retransmitting to MCU 50 at once, it is possible to prevent incorrect input of the password due to noise.

The present invention as described above is not limited to the above-described specific embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various changes without departing from the gist of the present invention as claimed in the claims. will be.

1 is a perspective view schematically showing a touch pad digital door lock of the present invention;

Figure 2 is a state of use of the touch pad digital door lock of the present invention,

3 is an analog waveform diagram generated from the touch pad of the present invention and a digital waveform diagram converted into a digital signal;

4 is a block diagram of a touch pad digital door lock according to the present invention;

5 is a signal classification table summarizing the number of cases appearing according to the input signal of the touch pad in the present invention;

6 is a flowchart illustrating a method of releasing a touch pad digital door lock according to the present invention.

Description of the Related Art

1: digital door lock 10: touch pad

20: Filter 30: A / D converter

40: first memory 41: second memory

50: MC-U 60: drive device

Claims (3)

In the door lock made of a touch pad, In the filter, only the long input signal whose signal value lasts more than the set value for more than 0.5s among the signals transmitted from the touch pad and the short input signal whose signal value lasts longer than the set value by more than 0.5s is set through the timer. After passing through the A / D converter, the A / D converter converts the long / short input signal passing through the filter into a digital signal and delivers it to MC. The MC U divides the digital signal transmitted from the AD converter into a long input signal and a short input signal and stores the digital signal sequentially in the first memory, and compares the input number stored in the first memory with a preset password in the second memory. Touch panel digital door lock, characterized in that for unlocking the door lock by operating the drive device in the same case. In the unlock method of the door lock, A user inputting a password through a touch pad (S10); Determining whether the magnitude (signal voltage value) of the input password is greater than or equal to the set value, and returning to the password input step if the signal value is less than or equal to the set value (S11); If the signal value is greater than or equal to the set value, determining again whether the duration of the signal value (signal length) is greater than or equal to the preset time (S12); In MCU, if the duration of the signal value is longer than the set time, it is stored in the first memory as a long input signal of the corresponding number (S13), and if the duration of the signal value is less than the set time, the short of the corresponding number. Storing in the first memory as an input signal (S14); Re-transmitting the input numbers sequentially stored in the first memory to MCU again (S15), and comparing the memory values transferred from the first memory with a password preset in the second memory (S16); If the first memory value input by the user and the password preset in the second memory do not match, generating an error alarm sound and returning to an input standby state (S17); Unlocking the door lock by operating the driving apparatus when the first memory value input by the user and the preset password match the second memory (S18); Method of releasing the touch pad digital door lock, characterized in that proceeds sequentially. delete

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