TWI578184B - Password inputting method based on eye's opening and closing state and security apparatus using the same - Google Patents

Description

Password input method based on eye opening state and security device applying the same

The present invention relates to a password input method, and more particularly to a password input method based on a user's eye opening state and a security device using the same.

The existing password input method is to input a number, a character or a symbol as a password into a device or a machine by using a keyboard, and if the input character matches the preset password, pass the authentication, and then turn on the device or turn on the device to execute. a program.

However, in the process of entering the password, if the person is peeped, the password may be leaked, or the password may be stolen or copied by detecting the fingerprint or temperature remaining on the keyboard. Even with the most advanced iris recognition, it is impossible to confirm that the user enters the password with free will. However, with the palmprint and fingerprint identification device, the fingerprint and the palm print can be copied. Similarly, the person may not be confirmed. Enter your password with free will.

The invention provides a password input method based on an eye opening state and a security device using the same, which can unlock the locked state of the lock by detecting an eye opening state made by the user.

The password input method based on the eye opening state of the present invention is applied to a lock. The password input method includes the steps of: capturing an image sequence through the image capturing unit; analyzing the image sequence to obtain eye image information of the user's eye region in the image sequence; and detecting the user based on the eye image information Blinking state and closed eye state; converting a plurality of blinking states and closed eye states into an eye opening state code; determining whether the eye opening state code conforms to a preset unlocking password; and determining whether to unlock the locked state according to the result of the determining .

In an embodiment of the invention, the step of deciding whether to unlock the lock state according to the result of the determination comprises: releasing the lock state of the lock when the eye open state code conforms to the preset unlock code; and when the eye is open When the code does not match the preset unlock password, the lock state of the lock is maintained.

In an embodiment of the invention, the step of detecting the blinking state and the closed eye state of the user based on the eye image information includes: searching for the eye object in the eye region based on the eye image information; and according to the size of the eye object It is judged that the eye area is in a blinking state or a closed eye state.

In an embodiment of the invention, the eye area is determined according to the size of the eye object The step of the field in the blinking state or the closed eye state includes: calculating the height and width of the eye object; determining whether the height of the eye object is less than the height threshold value, and whether the width of the eye object is greater than the width threshold; when the eye object is When the height is less than the height threshold value, and the width of the eye object is greater than the width threshold value, it is determined that the eye region is in the closed eye state; and when the height of the eye object is greater than or equal to the height threshold value, or the width of the eye object is less than or equal to the width threshold value At the time, it is determined that the eye region is in a blinking state.

In an embodiment of the present invention, the password input method based on the eye opening state further includes: identifying the biometric information of the eye object after searching for the eye object; and when the biometric information conforms to the preset user information a step of determining whether the eye region is in a blinking state or a closed eye state according to the size of the eye object; and when the biometric information does not conform to the preset user information, stopping determining that the eye region is in accordance with the size of the eye object The steps of the eye state or the closed eye state.

In an embodiment of the invention, the step of converting the plurality of blink states and the closed eyes state into the eye opening state code comprises: detecting the state of the eye region in the unit time; and detecting the eye region in the unit time When the inside is in the blinking state, the first encoding is generated; when the eye region is detected to be in the closed eye state per unit time, a second encoding is generated; and the plurality of blinking states and closed eye states are set in the preset time The generated plurality of first and second codes are sequentially arranged to form an eye opening state code.

In an embodiment of the invention, the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: comparing each bit in the eye opening state code and the preset unlocking password; when the eye is open Each bit in the status code is in accordance with the preset When the password is unlocked, it is determined that the eye opening state code conforms to the preset unlocking password; and when at least one of the eye opening state codes does not conform to the preset unlocking password, determining that the eye opening state code does not conform to the preset Unlock your password.

In an embodiment of the present invention, the preset unlocking password includes a preset blinking number, and the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: defining the continuously generated first and second encodings as blinking codes; counting The number of blinks appearing in the blink code of the eye opening state code; comparing the number of blinks with the preset number of blinks; when the number of blinks is equal to the preset number of blinks, determining that the eye open state code conforms to the preset unlock password; When the number of times is not equal to the preset number of blinks, it is determined that the eye open state code does not match the preset unlock password.

In an embodiment of the present invention, the preset unlocking password includes a preset blink frequency range, and the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: defining the continuously generated first and second codes to be blink codes; Calculate the blink frequency of the blink code in the eye open state code; determine whether the blink frequency is within the preset blink frequency range; when the blink frequency is within the preset blink frequency range, determine that the eye open state code conforms to the preset The unlock password is determined; and when the number of blinks is outside the preset blink frequency range, it is determined that the eye open state code does not match the preset unlock password.

In an embodiment of the present invention, the preset unlocking password includes a preset blink time range, and the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: calculating the first code consecutively in the eye opening state code The duration of the blink of an eye; whether the continuous blink time is within the preset blink time; When the eye time is within the preset blink time range, it is determined that the eye opening state code conforms to the preset unlocking code; and when the continuous blinking time is outside the preset blinking time range, determining that the eye opening state code does not match The default unlock password.

In an embodiment of the present invention, the preset unlocking password includes a preset closed eye time range, and the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: calculating that the second code continuously appears in the eye opening state code. Continuous eye-closing time; determine whether the continuous eye-closing time is within the preset eye-closing time range; when the continuous eye-closing time is within the preset eye-closing time range, determine that the eye opening state code conforms to the preset unlocking password; and when the continuous eye-closing time is located When the preset closed eye time range is out, it is determined that the eye opening state code does not conform to the preset unlocking password.

In an embodiment of the present invention, the method for inputting a password based on an eye opening state further includes the steps of: determining whether an eye opening state code conforms to an emergency help password; and when the eye opening state code is in accordance with an emergency When the password is requested, an emergency help message is sent.

The security device for unlocking based on the eye opening state of the present invention includes a lock, an image capturing unit, and a processing unit. The image capturing unit is used to capture an image sequence. The processing unit is coupled to the image capturing unit for analyzing the image sequence to obtain the eye image information of the user's eye region in the image sequence. The processing unit detects the blinking state and the closed eye state of the user based on the eye image information, converts the plurality of blinking states and the closed eye state into an eye opening state code, and determines whether the eye opening state code matches The default unlock password is used to decide whether to unlock the lock according to the result of the judgment.

In an embodiment of the invention, when the processing unit determines that the eye opening state code conforms to the preset unlocking password, the processing unit releases the locked state of the lock. When the processing unit determines that the eye opening state code does not conform to the preset unlocking password, the processing unit maintains the locked state of the lock.

In an embodiment of the invention, the processing unit searches for an eye object in the eye region based on the eye image information, and determines that the eye region is in a blinking state or a closed eye state according to the size of the eye object.

In an embodiment of the invention, the processing unit detects the height and width of the eye object; when the processing unit detects that the height of the eye object is less than the height threshold and the width of the eye object is greater than the width threshold, the processing unit It is determined that the eye area is in a closed eye state. When the processing unit detects that the height of the eye object is greater than or equal to the height threshold, or the width of the eye object is less than or equal to the width threshold, the processing unit determines that the eye region is in a blink state.

In an embodiment of the invention, the processing unit first identifies the biometric information of the eye object after searching for the eye object. When the biometric information conforms to the preset user information, the action of determining the eye region in the blinking state or the closed eye state according to the size of the eye object is performed; and when the biometric information does not meet the preset user information, the operation is stopped. The action of the eye region in the blinking state or the closed eye state is determined according to the size of the eye object.

In an embodiment of the invention, the processing unit detects the state of the eye region in a unit time. When the processing unit detects that the eye region is in a blinking state per unit time, the processing unit generates the first code. When the processing unit detects the eye area The processing unit generates a second code when the unit is in the closed eye state. The processing unit sequentially aligns the plurality of first and second codes generated by the plurality of blink states and the closed eye state in the preset time to form an eye opening state code.

In an embodiment of the invention, the processing unit compares each bit in the eye opening state code and the preset unlocking password; when each bit in the eye opening state code meets the preset unlocking password The processing unit determines that the eye opening state code conforms to the preset unlocking password. When at least one of the eye opening state codes does not meet the preset unlocking password, the processing unit determines that the eye opening state code does not conform to the preset unlocking password.

In an embodiment of the invention, the processing unit defines that the first and second codes generated continuously are blink codes. The processing unit counts the number of blinks that appear in the blink code of the eye opening state code, and compares the number of blinks with the number of preset blinks. When the number of blinks is equal to the preset number of blinks, the processing unit determines that the eye open state code conforms to the preset unlock password. When the blinking number is not equal to the preset blinking number, the processing unit determines that the eye opening state code does not conform to the preset unlocking password.

In an embodiment of the invention, the processing unit defines that the first and second codes generated continuously are blink codes. The processing unit calculates the blink frequency in which the blink code appears in the eye opening state code, and determines whether the blink frequency is within the preset blink frequency range. When the blink frequency is within the preset blink frequency range, the processing unit determines that the eye open state code conforms to the preset unlock password. When the number of blinks is outside the preset blink frequency range, the processing unit determines that the eye open state code does not conform to the preset unlock password.

In an embodiment of the invention, the processing unit calculates a continuous blink time in which the first code appears continuously in the eye opening state code, and determines whether the continuous blink time is within the preset blink time range. When the continuous blink time is within the preset blink time range, the processing unit determines that the eye open state code conforms to the preset unlock password. When the continuous blink time is outside the preset blink time range, the processing unit determines that the eye open state code does not conform to the preset unlock password.

In an embodiment of the invention, the processing unit calculates a continuous closed eye time in which the second code continuously appears in the eye opening state code, and determines whether the continuous eye closing time is within the preset closed eye time range. When the continuous eye closing time is within the preset closed eye time range, the processing unit determines that the eye opening state code conforms to the preset unlocking password. When the continuous eye closing time is outside the preset closed eye time range, the processing unit determines that the eye opening state code does not conform to the preset unlocking password.

In an embodiment of the invention, the processing unit further determines whether the eye opening state code conforms to the emergency help password, and when the eye opening state code conforms to the emergency help password, the processing unit issues emergency help information.

In an embodiment of the invention, the security device that is unlocked based on the eye opening state further includes a door body. The lock is arranged on the door body and is used to control the opening or closing of the door body.

In an embodiment of the invention, the security device for unlocking based on the eye opening state further includes a prompting unit for prompting the current configuration state of the lock.

Based on the above, the embodiment of the present invention provides a password input method based on an eye opening state and a security device using the same. The password input method can utilize special A fixed eye movement (such as blinking, continuous blinking, and/or continuous closing of the eye) as an unlocking code for unlocking the lock. Since the eye movement of the user is difficult to be peeped or perceived by others, the safety of the safe, the access control system or other type of security device to which the password input method is applied can be greatly improved, and the problem of password leakage can be prevented.

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧Security device

110, 810, 910‧‧‧ locks

120, 820, 920‧‧‧ image capture unit

130, 830, 930 ‧ ‧ processing unit

140, 940‧‧ ‧ prompt unit

410‧‧‧Eye objects

800‧‧‧ safe

840‧‧‧ cabinet

850‧‧‧ protective door

860, 960‧‧ ‧ cover

900‧‧‧Access Control System

950‧‧‧

B1‧‧‧ first code

B2‧‧‧Second code

BB‧‧‧Eye code

L1, L2‧‧‧ height of eye objects

PUC, PUC’‧‧‧ Eye Movement Code

PT‧‧‧Preset time

TD1, TD2, TD1', TD2'‧‧‧ time interval

Length of COT, COT’, CCT, CCT’‧‧‧

UT‧‧‧ unit time

W1, W2‧‧‧ Width of eye objects

S200~S250, S300~S370, S341~S345, S351A~S358A, S351B~S358B, S352C~S358C, S352D~S358D, S352E~S358E, S810~S820‧‧

FIG. 1 is a functional block diagram of a security device for unlocking based on an eye opening state according to an embodiment of the present invention.

2 is a flow chart showing the steps of a password input method based on an eye opening state according to an embodiment of the present invention.

FIG. 3 is a flow chart showing the steps of a password input method based on an eye opening state according to another embodiment of the present invention.

4A is a flow chart showing the steps of determining the state of an eye region in accordance with an embodiment of FIG.

4B and 4C are schematic diagrams showing the state of the eye region in accordance with an embodiment of FIG.

FIG. 5 is a flow chart showing the steps of converting the blink state and the closed eye state into a blink motion code according to an embodiment of FIG. 3.

6A-6E are flow diagrams showing the steps of determining whether an eye opening state code conforms to a preset unlocking password in accordance with various embodiments of FIG.

7A-7E are schematic diagrams of coding formats of eye opening state codes corresponding to different embodiments of FIGS. 6A-6E, respectively.

FIG. 8 is a flow chart showing the steps of determining whether an emergency situation has occurred according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of an access control system for unlocking based on an eye opening state according to an embodiment of the invention.

In order to make the disclosure of the present disclosure easier to understand, the following specific embodiments are examples that can be implemented by the present disclosure. Here, wherever possible, the same reference numerals are used in the drawings and the embodiments and the In addition, in the embodiments, the terms "upper", "lower", "left", "right", etc. are used to refer to the directions illustrated in the drawings, which are not intended to limit the invention. First described.

FIG. 1 is a functional block diagram of a security device for unlocking based on an eye opening state according to an embodiment of the present invention. Referring to FIG. 1 , the security device 100 for unlocking based on the eye opening state includes a lock 110 , an image capturing unit 120 , and a processing unit 130 . Here, the security device 100 can be, for example, a safe, an access control system (described in detail later), or other types of qualifications that require verification of the user to determine whether to provide the user with a specific authority for the security system/device, etc. Invention is not limited to The specific type of security device 100 is described.

In this embodiment, the image capturing unit 120 can be used to capture an image sequence IS in a specific direction (depending on the arrangement position/angle of the image capturing unit 120), that is, continuously capture multiple images and provide them to the processing unit. 130. The processing unit 130 is coupled to the image capturing unit 120. The processing unit 130 performs image processing and analysis on the image sequence IS captured by the image capturing unit 120 to obtain eye image information in the image sequence IS of the user's eye region.

Based on the obtained eye image information, the processing unit 130 can detect the user's eye opening state (including the blinking state and the closed eye state), and then determine whether the user's continuous blinking state or closed eye state is consistent. A default unlock password (can be stored in a storage unit (not shown)). The processing unit 130 determines whether to issue the corresponding control signal S_C according to the result of the determination, and switches the configuration state of the lock 110 to a locked state or an unlocked state. That is, the lock 110 is locked or unlocked in response to the control signal S_C of the processing unit 130. In this embodiment, the processing unit 130 is, for example, a central processing unit (CPU), a graphics processing unit (GPU), or other programmable microprocessor (Microprocessor).

Further, in the security device 100 of the present embodiment, a prompting unit 140 can be selectively provided. The prompting unit 140 can be used to indicate the current configuration state of the lock 110, such as the lock 110 being in a locked state or an unlocked state. Here, the prompting unit 140 can use the text display, the light number display, the voice prompt or any other feasible prompting manner to enable the user to distinguish the current state of the lock 110, the present invention does not This is limited to this.

The security device 100 can perform an action of deciding whether to release the lock state of the lock 110 based on the user's eye opening state based on the step flow shown in FIG. 2 .

2 is a flow chart showing the steps of a password input method based on an eye opening state according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 simultaneously, first, the image sequence IS is captured by the image capturing unit 120 (step S200). Thereafter, the image sequence IS is analyzed by the processing unit 130 to obtain eye image information of the eye region of the user in the image sequence IS (step S210). Next, the processing unit 130 detects the eye opening state (including the blinking state and the closed eye state) of the user based on the eye image information (step S220).

After detecting the open state of the user's eye, the processing unit 130 converts the detected plurality of blink states and closed eye states into an eye open state code (step S230), and determines the eye accordingly. Whether the partial opening state code conforms to the preset unlocking password (step S240). The preset unlocking password described herein may be, for example, the number of occurrences of blinking, the frequency of occurrence, and/or the duration of blinking or closing the eyes (further examples will be further exemplified). Based on the result of the above determination, the processing unit 130 can determine whether to release the locked state of the lock 110 (step S250).

The flow of the specific steps of unlocking based on the eye opening state will be further described below with reference to the embodiment of FIG. 3. FIG. 3 is a flowchart of steps of a password input method based on an eye opening state according to another embodiment of the present invention. Herein, the following embodiments are described in conjunction with the hardware architecture of the security device 100 of the embodiment of FIG. However, the password input method based on the eye opening state can be applied to the hardware architecture of any type of security device, and the invention is not limited thereto.

Referring to FIG. 3, in the password input method of the embodiment, the image sequence IS is first captured by the image capturing unit 120 (step S300), so that the processing unit 130 obtains the image sequence IS by analyzing the image sequence IS. The eye image information of the user's eye area is displayed (step S310).

After that, the processing unit 130 searches for the eye object in the eye region based on the eye image information (step S320), and determines whether the eye object is in the blink state or the closed eye state according to the size of the eye object (step S330). . Then, the processing unit 130 detects the eye opening state of the user per unit time according to the 睁/closed state of the eye object, and accordingly detects the plurality of blinking states and closed eye states. It is converted into an eye opening state code (step S340).

After obtaining the eye opening state code of the user, the processing unit 130 compares the obtained eye opening state code with the preset unlocking password to determine whether the user's eye opening state code conforms to the preset. The password is unlocked (step S350). When the lock 110 is in the locked state, if the determination in step S350 is YES, the processing unit 130 releases the locked state of the lock 110 (ie, the lock 110 is switched to the unlocked state) (step S360); otherwise, if the determination is no, Then, the processing unit 130 maintains the locked state of the lock 110 (step S370). From another point of view, if the lock 110 is already in the unlocked state, the lock 110 will remain in the unlocked state regardless of whether the result of the determination in step S350 is YES. It is worth mentioning that in an exemplary embodiment, the user can also make a group connection when the lock 110 is unlocked. The continuation of the eye movement to define the preset unlocking password from the line using the eye opening state code corresponding to the continuous blinking action. Of course, the preset unlocking password may be pre-defined by the designer and stored in the storage unit (not shown) of the security device 100, and the invention is not limited thereto.

It is worth mentioning that, in an exemplary embodiment, the embodiment may further identify the biometric information of the user's eye object after searching for the eye object (step S320) (for example: iris or retina) Information) to confirm the identity of the user. If the user's identity is correct, the subsequent steps S330 to S370 are further performed. If not, stop/reject the subsequent eye movement recognition step.

The step S330 of determining the state of the eye object, the step S340 of switching the eye opening state coding, and the determination of the eye opening are respectively described below with reference to the embodiments of FIGS. 4A, 5, 6A to 6E, and 7A to 7E. The specific step procedure of step S350 of whether the status conforms to the preset unlock password.

4A is a flow chart showing the steps of determining the state of an eye region in accordance with an embodiment of FIG. 4B and 4C are schematic diagrams showing the state of the eye region in accordance with an embodiment of FIG. Referring to FIG. 4A to FIG. 4C , after the processing unit 130 searches for the eye object 410 in the eye region ER, the processing unit 130 can perform image processing on the eye image information to obtain a clear indication of the eye object boundary. The image information is such that the processing unit 130 can calculate the size of the eye object 410 (including the height and width of the eye object 410) according to the image information (step S332).

For example, the processing unit 130 can adjust the pair of eye image information. The ratio (for example, adjusting the gain value and the offset value) to obtain a enhanced image, and then sequentially performing denoising, edge sharpening, binarization, and edge sharpening on the enhanced image. An image of the ocular article 410 as shown in FIG. 4B is obtained.

After detecting the eye object 410 and calculating the size of the eye object 410, the processing unit 130 determines whether the height of the eye object 410 is less than a height threshold according to the size of the eye object 410 (eg, a height threshold value). The range is between 15 and 17 pixels, and whether the width of the eye object 410 is greater than the width threshold (for example, the range of the width threshold is between 70 and 90 pixels) (step S334). When the processing unit 130 detects that the height of the eye object 410 is less than the height threshold and the width of the eye object is greater than the width threshold, the processing unit 130 determines that the eye region ER is currently in the closed state (as shown in FIG. 4B). If the processing unit 130 detects that the eye object 410 does not meet at least one of the above conditions, the processing unit 130 determines that the eye region ER is currently in a blinking state (eg, The upper half of Fig. 4B is shown) (step S338).

As shown in FIG. 4B, the height of the eye object 410 can be, for example, the distance from the upper vertex to the lower vertex of the eye frame boundary (eg, heights L1, L2), and the width of the eye object 410 can be, for example, The distance from the left vertex to the right vertex of the eye frame boundary (e.g., the widths W1, W2), but the present invention is not limited thereto. In other embodiments, the processing unit 130 may also define feature points on the eye object 410 as the basis for calculating the height and width.

In addition, it is worth mentioning that this embodiment is based on the image of a single eye. The eye area ER is identified as a blinking state or a closed eye state, but the invention is not limited thereto. In other embodiments, the 睁/closed eye state of the eye region ER can also be determined according to the left and right eye images of the user (for example, when the left and right eyes are closed eyes, the eye region ER is determined to be in the closed eye state). Alternatively, the 睁/closed eye state corresponding to the left eye region (for example, the left half of the eye region ER) and the right eye region (for example, the right half of the eye region ER) are independently defined according to the left and right eye images, respectively.睁 / closed eye status.

After the processing unit 130 determines that the eye object is in the blink state or the closed eye state, the processing unit may perform the step S340 of converting the eye opening state code according to the step flow of FIG. 5 .

FIG. 5 is a flow chart showing the steps of converting the blink state and the closed eye state into an eye opening state code according to an embodiment of FIG. 3. Referring to FIG. 5, after the processing unit 130 determines that the eye region is in a blinking state or a closed eye state, it further detects the state of the eye object in a unit time (which can be defined by the designer) (step S341). And it is judged whether the eye region is in a blinking state or a closed eye state per unit time (step S342). If it is determined in step S342 that the eye region is in a blinking state per unit time, the processing unit 130 determines that the user has made a blinking motion, and accordingly generates a first code (step S343). On the other hand, if it is determined in step S342 that the eye region is in the closed eye state per unit time, the processing unit 130 determines that the user has made a closed eye motion, and accordingly generates a second code (step S344). Here, the first code is, for example, a logical “1”, and the second code is, for example, a logical “0”, but the invention is not limited thereto. In other embodiments, the first series corresponding to the blink state The code may also be a logical "0", and the second code corresponding to the closed eye state may also be a logical "1".

The processing unit 130 continuously acquires a plurality of blinking states and closed eyes states of the user for a preset period of time (which may be composed of a plurality of unit time), and sets a plurality of blinking states and closed eyes for a preset time. The plurality of first and second codes generated by the state are sequentially arranged to constitute an eye opening state code (step S345). The processing unit 130 successively performs the step S350 of comparing the eye opening state code with the preset unlocking code, so as to determine whether the eye opening state code obtained from the user's eye motion conforms to the preset unlocking password. . The determination of the encoding mode under the different preset unlocking codes is illustrated by the coding sequence of the eye opening state coding of FIG. 7A to FIG. 7E with the step flow of FIG. 6A to FIG. 6E. The eye opening state encoding PUC and PUC′ of FIG. 7A to FIG. 7E are the processing unit 130 continuously converting into the 睁/closed eye state of the UT eye object in each unit time within the preset time PT. The coding sequence (this is exemplified by a 12-bit coding sequence, but the invention is not limited thereto). In the eye opening state coding PUC and PUC', the first code B1 generated based on the blink state is indicated by a logic "1", and the second code B2 generated based on the closed eye state is represented by a logic "0". Marked, but the invention is not limited to this.

Referring first to FIG. 6A, in the embodiment, the preset unlocking password is set to a specific number of blinks. In detail, in step S350 of the embodiment, the processing unit 130 defines the continuously generated first and second codes as blink codes (indicating that the processing unit 130 continuously generates the first and second codes, the user makes a blink move (Step S351A), and counts the number of times the blink code appears in the eye opening state code (i.e., the number of blinks of the user) (step S352A). Next, the processing unit 130 compares the number of blinks with a preset number of blinks, thereby determining whether the counted number of blinks is equal to the preset number of blinks (step S354A). If the processing unit 130 determines that the blinking number is equal to the preset blinking number, it is determined that the user's eye opening state code conforms to the preset unlocking password (step S356A), and then proceeds to step S360 to release the locked state of the lock 110; If the processing unit 130 determines that the number of blinks is not equal to the preset number of blinks, it is determined that the user's eye open state code does not conform to the preset unlock password (step S358A), and then proceeds to step S370 to maintain the locked state of the lock 110.

For example, referring to FIG. 6A and FIG. 7A together, it is assumed that the preset blink number is set to 3. When the processing unit 130 obtains the eye opening state coded PUC composed of the code sequence of "111011101011" according to the eye motion of the user, the processing unit 130 defines the code of "10" as a blink code BB, and The number of occurrences in the PUC encoded by the blinking code BB in the eye opening state is counted. In the eye opening state coded PUC, the processing unit 130 counts that the blink code BB appears 3 times (ie, the user blinks 3 times), thereby determining that the user's eye opening state code PUC conforms to the preset unlock password. And unlocking the lock 110.

On the other hand, when the processing unit 130 acquires the eye opening state code PUC' composed of the code sequence of "111110111011" according to the eye motion of the user, the processing unit 130 first defines the code of "10" as a wink The BB is coded, and the number of occurrences of the blink code BB in the eye open state code PUC' is counted accordingly. In the eye opening state code PUC', since the processing unit 130 only counts out that the blink code BB appears twice (that is, the user blinks twice), it is determined that the user's eye opening state code PUC' The preset unlock password is not met, and the lock state of the lock 110 is maintained.

Here, the preset number of blinks (3 times) is merely an example for convenience of explanation, and the present invention is not limited thereto. Furthermore, the preset number of preset blinks can be N times, and the N value is a positive integer that can be selected by the designer.

Referring to FIG. 6B, in the embodiment, the preset unlocking password is set to a specific blink frequency range. In detail, in step S350 of the embodiment, the processing unit 130 defines the continuously generated first and second codes as blink codes (step S351B), and calculates the occurrence of the blink code in the eye opening state code. The frequency (i.e., the blink frequency of the user) (step S352B). Next, the processing unit 130 determines whether the calculated blink frequency is within the preset blink frequency range (step S354B). If the processing unit 130 determines that the blink frequency is within the preset blink frequency range, it is determined that the user's eye open state code conforms to the preset unlock password (step S356B), and then proceeds to step S360 to release the lock of the lock 110. If the processing unit 130 determines that the blink frequency is outside the preset blink frequency range, it is determined that the user's eye open state code does not meet the preset unlock password (step S358B), and then proceeds to step S370 to maintain the lock. The locked state of 110.

For example, please refer to FIG. 6B and FIG. 7B together, assuming the default blink frequency The rate range is set to 1.9~2.1 seconds/blink times. When the processing unit 130 obtains the eye opening state coding PUC composed of the coding sequence of "110111011101" according to the eye motion of the user, the processing unit 130 defines the code of "10" as a blink code BB, and It is calculated to calculate the frequency/time interval in which the blink code BB appears in the eye opening state coded PUC. In the eye opening state coding PUC, the processing unit 130 calculates that the time interval between the first blink code BB and the second blink code BB is TD1, and the second blink code BB and the third blink code BB appear. The time interval is TD2. Wherein, when the time intervals TD1 and TD2 are both within 1.9 to 2.1 seconds (ie, the user blinks at a frequency of 1.9 to 2.1 seconds per blink), the processing unit 130 determines that the user's eyes are open. The state coded PUC conforms to the preset unlock code and unlocks the lock state of the lock 110.

On the other hand, when the processing unit 130 obtains the eye opening state encoding PUC' composed of the coding sequence of "110110111011" according to the eye motion of the user, the processing unit 130 first defines the encoding of "10" as A blink code BB, and the frequency at which the blink code BB appears in the eye open state coded PUC' is calculated. In the eye opening state coding PUC', the processing unit 130 calculates that the time interval between the first blink code BB and the second blink code BB is TD1', and the second blink code BB and the third blink code The time interval at which BB appears is TD2'. Wherein, when one of the time intervals TD1', TD2' is outside the range of 1.9 to 2.1 seconds (such as the time interval TD1'), the processing unit 130 determines that the user's eye opening state code PUC' does not match. The unlock password is preset and the lock state of the lock 110 is maintained.

Here, the preset blink frequency range (1.9 to 2.1 seconds/blink times) is merely an example for convenience of explanation, but the present invention is not limited thereto. Furthermore, the upper/lower limit of the preset preset blink frequency range can be selected by the designer and can also be a specific frequency (for example, 2 seconds/blink times).

Referring to FIG. 6C, in the embodiment, the preset unlock password is set to a specific continuous blink time. In detail, in step S350 of the embodiment, the processing unit 130 calculates the time (ie, the sustained blink time) in which the first code corresponding to the blink state in the eye opening state code is continuously generated (step S352C). ). Next, the processing unit 130 determines whether the calculated continuous blink time is within the preset blink time range (step S354C). If the processing unit 130 determines that the continuous blink time is within the preset blink time range, it is determined that the user's eye open state code conforms to the preset unlock password (step S356C), and then proceeds to step S360 to release the lock. If the processing unit 130 determines that the continuous blink time is outside the preset blink time range, it is determined that the user's eye open state code does not meet the preset unlock password (step S358C), and the connection continues. Step S370 is performed to maintain the locked state of the lock 110.

For example, referring to FIG. 6C and FIG. 7C together, it is assumed that the preset blink time range is set to 9 to 11 seconds. When the processing unit 130 obtains the eye opening state encoding PUC composed of the coding sequence of "100111111011" according to the eye motion of the user, the processing unit 130 calculates the first code B1 (labeled "1") in the eye. The maximum time length COT that appears continuously in the PUC state coded PUC. In the eye opening state coding PUC, the processing unit 130 calculates that the first code B1 is continuous The maximum time length COOT that occurs is approximately 6 unit time UT. When the maximum time length COT is within 9 to 11 seconds (ie, the user continues to blink for 9 to 11 seconds), the processing unit 130 determines that the user's eye opening state code PUC conforms to the preset unlocking password. And unlocking the lock 110.

On the other hand, when the processing unit 130 obtains the eye opening state code PUC′ composed of the coding sequence of “110111011110” according to the eye motion of the user, the processing unit 130 calculates the first code B1 to be opened in the eye. The maximum time length COT that appears continuously in the state code PUC'. In the eye opening state code PUC', the processing unit 130 calculates that the maximum time length COT' in which the first code B1 appears continuously is about 4 unit time UT. Wherein, when the maximum time length COT' is outside the range of 9 to 11 seconds, the processing unit 130 determines that the user's eye opening state code PUC' does not comply with the preset unlocking code and maintains the locked state of the lock 110.

Here, the preset blink time range (9-11 seconds) is merely an example for convenience of explanation, but the present invention is not limited thereto. Furthermore, the upper/lower limit of the set blink time range can be selected by the designer, or only the lower limit of the blink time range can be set without setting the upper limit (ie, as long as the user continues to blink beyond the set blink The lower limit of the time range, that is, the corresponding eye opening state code is determined to be in accordance with the preset unlocking password).

Referring to FIG. 6D, in the embodiment, the preset unlocking password is set to a specific continuous eye-closing time. In detail, in step S350 of the embodiment, the processing unit 130 calculates the number corresponding to the closed eye state in the eye opening state code. The two codes continuously appear (i.e., continue blinking time) (step S352D). Next, the processing unit 130 determines whether the calculated continuous closed eye time is within the preset closed eye time range (step S354D). If the processing unit 130 determines that the continuous eye closing time is within the preset closed eye time range, it is determined that the user's eye opening state code conforms to the preset unlocking password (step S356D), and then proceeds to step S360 to release the lock 110. If the processing unit 130 determines that the continuous eye closing time is outside the preset closed eye time range, it is determined that the user's eye opening state code does not meet the preset unlocking password (step S358D), and then proceeds to step S370. The locked state of the lock 110 is maintained.

For example, referring to FIG. 6D and FIG. 7D together, it is assumed that the preset closed eye time range is set to 9 to 11 seconds. When the processing unit 130 obtains the eye opening state coding PUC composed of the coding sequence of "110110000001" according to the eye movement of the user, the processing unit 130 calculates the second code B2 (labeled as "0") in the eye. The maximum time length CCT that appears continuously in the PUC state coded PUC. In the eye opening state coding PUC, the processing unit 130 calculates that the maximum time length CCT in which the second code B2 appears continuously is about 6 unit time UT. Wherein, when the maximum time length CCT is within 9 to 11 seconds (ie, the user continues to close the eyes for 9 to 11 seconds), the processing unit 130 determines that the user's eye opening state code PUC conforms to the preset unlocking password, and The locked state of the lock 110 is released.

On the other hand, when the processing unit 130 obtains the eye opening state code PUC' composed of the code sequence of "101100011011" according to the eye motion of the user, the processing unit 130 calculates the second code B2 to be opened in the eye. State code The maximum length of time CCT' that occurs continuously in PUC'. In the eye opening state code PUC', the processing unit 130 calculates that the maximum time length CCT' in which the second code B2 appears continuously is about 3 unit time UT. Wherein, when the maximum time length COT' is outside the range of 9 to 11 seconds, the processing unit 130 determines that the user's eye opening state code PUC' does not comply with the preset unlocking code and maintains the locked state of the lock 110.

Here, the predetermined closed-eye time range (9-11 seconds) is merely an example for convenience of explanation, but the present invention is not limited thereto. Furthermore, the upper/lower limit of the set closed eye time range can be selected by the designer, or only the lower limit of the closed eye time range can be set without setting the upper limit (ie, as long as the user continues to close the eye beyond the lower limit of the set closed eye time range, That is, it is determined that the corresponding eye opening state code conforms to the preset unlocking password).

Referring to FIG. 6E, in the embodiment, the processing unit 130 determines whether to unlock by comparing whether the eye opening state code is completely the same as the preset unlocking password. In detail, in step S350 of the embodiment, the processing unit 130 compares each bit of the eye opening state code with the preset unlocking code (step S352E). Next, the processing unit 130 determines whether each bit of the acquired eye opening state code conforms to the preset unlocking password (step S354E). If the processing unit 130 determines that each bit in the eye opening state code conforms to the preset unlocking password, it is determined that the user's eye opening state code conforms to the preset unlocking password (step S356E), and continues Step S360 to release the locked state of the lock 110; otherwise, if the processing unit 130 determines at least one of the eye open state codes is not When the preset unlocking password is met, it is determined that the user's eye opening state code does not conform to the preset unlocking password (step S358E), and step S370 is continued to maintain the locked state of the lock 110.

For example, referring to FIG. 6E and FIG. 7E together, it is assumed that the preset blink password is set to a coding sequence composed of 8 bits "10101010". When the processing unit 130 obtains the eye opening state coding PUC composed of the coding sequence of “10101010” according to the eye motion of the user, the processing unit 130 encodes each of the acquired eye opening state codes PUC. The bit is compared to the preset unlock password. After the comparison, the processing unit 130 determines that the user's eye opening state coded PUC is the same as each bit of the preset unlocking code, so the processing unit 130 determines the user's eye opening state code. The PUC conforms to the preset unlock password and unlocks the lock 110.

On the other hand, when the processing unit 130 acquires the eye opening state code PUC' composed of the code sequence of "11101010" according to the eye movement of the user, the processing unit 130 will open the acquired eye state. Each bit of the encoded PUC' is compared with a preset unlock password. After the comparison, the processing unit 130 determines that the second bit in the user's eye opening state code PUC' does not match the preset unlocking password. Therefore, the processing unit 130 determines that the user's eye is open. The status code PUC' does not match the preset unlock password and maintains the lock state of the lock 110.

In addition, in the password input method of the embodiment of the present invention, the step S350 of determining whether the eye opening state code conforms to the preset unlocking password is not limited to the embodiment of FIG. 6A to FIG. 6E. One as a specific judgment The method of disconnecting, and at least two of the determining manners of FIG. 6A to FIG. 6D, may be used to set a judgment condition including at least two of determining the number of blinks/blinking frequency/blinking duration/closing eye duration. To unlock the password as a default.

For example, the designer can set the preset unlocking password to perform three consecutive blinking operations (ie, the preset blinking times are equal to 3), and then perform the closed eye motion for 9 to 11 seconds (ie, the preset closed eye time). The range is 9~11 seconds). At this time, if the processing unit 130 obtains the blink action code having the format of “101010000000”, it can be determined that the blink action code conforms to the preset unlock password. In other words, under this preset unlocking password, the user needs to make an action of blinking 3 times (corresponding to 3 blink codes "10") and then closing the eyes for 9 to 11 seconds (corresponding to 6 second codes "0"). The processing unit 130 determines that the user's eye opening state code conforms to the preset unlocking password. Here, the above conditions are merely illustrative of the examples listed, and the present invention is not limited thereto. Furthermore, any combination of conditions commensurate with the above-mentioned number of blinks/blinking frequency/continuous blinking time/continuous closing time is included in the scope of the embodiments of the present invention.

In addition to the above-mentioned step of unlocking based on the eye opening state, the embodiment of the present invention further provides a password input method for determining whether a user has an emergency situation, and the specific procedure flow is as shown in FIG. 8 .

FIG. 8 is a flow chart showing the steps of determining whether an emergency situation has occurred according to an embodiment of the present invention. Referring to FIG. 8 , in the embodiment, the password input method may be before the step S350 of determining whether the user's eye opening state code conforms to the preset unlocking password (or at the same time, the invention is not limited thereto). , first determine the user's eye opening status Whether the encoding conforms to the emergency help password (step S810). If it is determined that the user's eye opening status code meets the emergency help password, it indicates that the user may be in an emergency situation (for example, being held by someone), so the processing unit 130 may issue emergency help information (step S820). The security unit can notify the security unit that an abnormal state occurs; on the other hand, if it is determined that the user's eye opening status code does not meet the emergency help password, further determine whether the eye opening status code conforms to the preset unlocking password. Step S350.

Herein, the specific manner of comparing the eye opening state code and the emergency help password of the user may refer to the related description of the comparison of the eye opening state code and the preset unlocking password (FIG. 6A to FIG. 7E). Example), so I won't go into details.

A practical application example of the above-described security device and password input method for unlocking based on the eye opening state will be described below with reference to the embodiment of FIG. 9 is a schematic diagram of an access control system for unlocking based on an eye opening state according to an embodiment of the present invention.

Referring to FIG. 9 , the access control system 900 includes a lock 910 , an image capturing unit 920 , a processing unit 930 , a prompting unit 940 , and a door body 950 . The lock 910 is disposed on the door body 950 and is used to control the opening or closing of the door body 950. In the present embodiment, the prompting unit 940 is, for example, a light number display device that prompts the current configuration state of the lock 910 to be in a locked state or an unlocked state, but is not limited thereto.

In this embodiment, the image capturing unit 920 is disposed on the door body 950, and is covered by a cover 960 to expose an image capturing area only in the image capturing direction of the image capturing unit 920 for the user to The eye area can be aligned with the image capturing area, so that the image capturing unit 920 can capture the image sequence for the user's eye area, and avoid The prying eyes of others are avoided, thereby improving the safety of use of the access control system 900. The arrangement of the cover 960 is also the designer's choice according to the design requirements, and the invention is not limited thereto.

Based on the architecture of the access control system 900, the processing unit 930 can detect the eye made by the user according to the sequence of steps in the foregoing FIG. 2 to FIG. 6E according to the image sequence captured by the image capturing unit 920. The action/eye opening state, and determining whether the user's eye opening state code conforms to the preset unlocking password, and then determining whether to issue the corresponding control signal according to the determination result to control the unlocking state of the lock 910, thereby using The door body 950 can be opened to enter the area behind the door body 950.

In summary, the embodiment of the present invention provides a password input method based on an eye opening state and a security device using the same. The password input method may utilize a specific eye movement (eg, blinking, continuous blinking, and/or continuous closing of the eye) as an unlocking code to unlock the locked state of the lock. Since the eye movement of the user is difficult to be peeped or perceived by others, the security of the access control system or other type of security device to which the password input method is applied can be greatly improved, and the problem of password leakage can be prevented.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

S200~S250‧‧‧Steps

Claims (23)

A password input method based on an eye opening state is applicable to a lock. The password input method includes: capturing an image sequence through an image capturing unit; analyzing the image sequence to obtain a user in the image sequence One eye image information in one eye region; detecting a blink state and a closed eye state of the user based on the eye image information; converting a plurality of the blink states and the closed eye state into an eye open state code Determining whether the eye opening state code conforms to an emergency help password, and when the eye opening state code conforms to the emergency help password, issuing an emergency help information; determining whether the eye opening state code conforms to a pre- Setting an unlocking password; and determining, according to the result of the determining, whether to unlock a locked state of the lock, wherein converting the plurality of blinking states and the closed eye state into the eye opening state encoding comprises: detecting the eye region a state within a unit time; when it is detected that the eye region is in the blink state at the unit time, a first code is generated; When the eye to the region in the closed-eye state in the unit time, generating a second coded; and based on the plurality of open-eye state and the closed-eye state produced within a predetermined time The plurality of the first and the second codes are sequentially arranged to form the eye opening state code. The method for inputting a password based on an eye opening state according to claim 1, wherein the step of deciding whether to release the locked state of the lock according to the result of the determining comprises: when the eye opening state code conforms to the preset When the unlock password is set, the locked state of the lock is released; and when the eye open state code does not conform to the preset unlock password, the locked state of the lock is maintained. The method for inputting a password based on an eye opening state according to claim 1, wherein the step of detecting the blink state and the closed eye state of the user based on the eye image information comprises: based on the eye The image information searches for an eye object in the eye area; and determines that the eye area is in the blink state or the closed eye state according to the size of the eye object. The password input method based on the eye opening state according to claim 3, wherein the step of determining the eye region in the blink state or the closed eye state according to the size of the eye object comprises: calculating the eye a height and a width of the object; determining whether the height of the eye object is less than a height threshold, and whether the width of the eye object is greater than a width threshold; when the height of the eye object is less than the height threshold, and the Eye object width When the degree is greater than the width threshold, determining that the eye region is in the closed eye state; and when the height of the eye object is greater than or equal to the height threshold, or the width of the eye object is less than or equal to the width threshold, determining The eye area is in this blinking state. The method for inputting a password based on an eye opening state according to claim 3, further comprising: identifying a biometric information of the eye object after searching the eye object; and when the biometric information is met a step of determining, according to the size of the eye object, that the eye region is in the blink state or the closed eye state according to the size of the eye object; and stopping when the biometric information does not meet the preset user information A step of determining whether the eye region is in the blink state or the closed eye state is performed according to the size of the eye object. The password input method based on the eye opening state according to claim 1, wherein the preset unlocking password includes a preset blinking number, and determining whether the eye opening state code conforms to the preset unlocking password. The steps include: defining the first and second codes that are continuously generated as a blink code; counting the number of blinks in the blink code of the eye opening state code; comparing the number of blinks with the number of preset blinks When the number of blinks is equal to the preset number of blinks, determining that the eye open state code conforms to the preset unlock password; When the number of blinks is not equal to the preset number of blinks, it is determined that the eye open state code does not conform to the preset unlock password. The password input method based on the eye opening state according to claim 1, wherein the preset unlocking password includes a preset blinking frequency range, and determining whether the eye opening state code conforms to the preset unlocking The step of cryptographically includes: defining the first and second codes that are continuously generated as a blink code; calculating a blink frequency of the blink code in the eye open state code; determining whether the blink frequency is at the preset Within the blink frequency range; when the blink frequency is within the preset blink frequency range, determining that the eye open state code conforms to the preset unlock password; and determining that the blink frequency is outside the preset blink frequency range The eye opening status code does not match the preset unlock code. The password input method based on the eye opening state according to claim 1, wherein the preset unlocking password includes a preset blink time range, and determining whether the eye opening state code conforms to the preset The step of unlocking the password includes: calculating a continuous blink time in which the first code appears continuously in the eye opening state code; determining whether the continuous blink time is within the preset blink time range; Determining that the eye opening state code conforms to the preset unlocking code when the eye time is within the preset blink time range; and determining the eye when the continuous blink time is outside the preset blink time range The section status code does not match the preset unlock password. The password input method based on the eye opening state according to claim 1, wherein the preset unlocking password includes a preset closed eye time range, and determining whether the eye opening state code conforms to the preset unlocking The step of encrypting includes: calculating a continuous closed eye time in which the second code continuously appears in the eye opening state code; determining whether the continuous eye closing time is within the preset closed eye time range; and when the continuous closed eye time is located in the preset When the closed eye time range is set, it is determined that the eye opening state code conforms to the preset unlocking code; and when the continuous eye closing time is outside the preset closed eye time range, determining that the eye opening state code does not conform to the preset Set the unlock password. The password input method based on the eye opening state according to claim 1, wherein the step of determining whether the eye opening state code conforms to the preset unlocking password comprises: encoding the eye opening state code And each bit in the preset unlocking password; when each bit in the eye opening state code conforms to the preset unlocking password, determining that the eye opening state code conforms to the preset unlocking password And when at least one of the eye opening state codes does not meet the preset unlocking password, determining that the eye opening state code does not conform to the preset unlocking password. A computer program product that performs an eye-opening state-based password input method as described in claim 1 after being loaded via an electronic device. A security device for unlocking based on an eye opening state, comprising: a lock unit; an image capture unit for capturing an image sequence; and a processing unit coupled to the image capture unit for analyzing the image sequence to obtain an eye region of a user in the image sequence One eye image information; wherein the processing unit detects a blink state and a closed eye state of the user based on the eye image information, and converts the plurality of blink states and the closed eye state into an eye opening State code, and determine whether the eye opening state code conforms to an emergency help password, and when the eye opening state code conforms to the emergency help code, issue an emergency help information, and determine the eye open state code Whether the default unlocking password is met, according to the result of the determination, whether to cancel a locked state of the lock, wherein the processing unit detects the state of the eye region in a unit time; when the processing unit detects the eye When the area is in the blink state in the unit time, the processing unit generates a first code, and when the processing unit detects the eye area in the unit When the interval is in the closed eye state, the processing unit generates a second code, wherein the processing unit generates a plurality of the first and the first number generated based on the plurality of the blink states and the closed eye state within a preset time period The two codes are arranged in sequence to form the eye opening state code. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit releases the lock when the processing unit determines that the eye opening state code conforms to the preset unlocking password. The locked state, and when the processing unit determines that the eye open state code does not match the preset unlock password The processing unit maintains the locked state of the lock. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit searches for an eye object in the eye region based on the eye image information, and according to the eye object The size determines that the eye area is in a blinking state or a closed eye state. The security device for unlocking based on the eye opening state according to claim 14, wherein the processing unit detects the height and width of the eye object; when the processing unit detects the height of the eye object When the width of the eye object is greater than a width threshold, the processing unit determines that the eye region is in the closed eye state, and when the processing unit detects that the height of the eye object is greater than or equal to When the height threshold value, or the width of the eye object is less than or equal to the width threshold value, the processing unit determines that the eye region is in the blink state. The security device for unlocking based on the eye opening state according to claim 14, wherein the processing unit first identifies a biometric information of the eye object after searching the eye object; When the feature information conforms to a preset user information, the action of determining the eye region in the blink state or the closed eye state according to the size of the eye object is performed; and when the biometric information does not meet the preset user In the case of information, the operation of judging whether the eye region is in the blink state or the closed eye state is determined according to the size of the eye object. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit defines the first and second codes continuously generated as a blink code, and counting the eye opening The blink code is encoded in the status code The current number of blinks, and compares the number of blinks with a preset number of blinks; when the number of blinks is equal to the preset number of blinks, the processing unit determines that the eye open state code conforms to the preset unlock password, and when When the number of blinks is not equal to the preset number of blinks, the processing unit determines that the eye open state code does not conform to the preset unlock password. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit defines the first and second codes continuously generated as a blink code, and calculates the eye opening. a blink frequency of the blink code in the state code, and determining whether the blink frequency is within a predetermined blink frequency range; when the blink frequency is within the preset blink frequency range, the processing unit determines the eye opening The status code conforms to the preset unlock password, and when the number of blinks is outside the preset blink frequency range, the processing unit determines that the eye open state code does not conform to the preset unlock password. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit calculates a continuous blinking time in which the first code continuously appears in the eye opening state code, and Determining whether the continuous blink time is within a preset blink time range; when the continuous blink time is within the preset blink time range, the processing unit determines that the eye open state code conforms to the preset unlock The password, and when the continuous blink time is outside the preset blink time range, the processing unit determines that the eye open state code does not conform to the preset unlock password. The solution based on the eye opening state as described in item 12 of the patent application scope a security device for locking, wherein the processing unit calculates a continuous closed eye time in which the second code continuously appears in the eye opening state code, and determines whether the continuous eye closing time is within a predetermined closed eye time range; When the closed eye time is within the preset closed eye time range, the processing unit determines that the eye open state code conforms to the preset unlock password, and when the continuous closed eye time is outside the preset closed eye time range, the processing unit determines The eye opening status code does not match the preset unlock code. The security device for unlocking based on the eye opening state according to claim 12, wherein the processing unit encodes each eye in the eye opening state code and the preset unlocking password; When each bit in the eye opening state code conforms to the preset unlocking password, the processing unit determines that the eye opening state code conforms to the preset unlocking password, and when the eye opening state code is When at least one element does not meet the preset unlocking password, the processing unit determines that the eye opening state code does not conform to the preset unlocking password. The security device for unlocking based on the eye opening state according to claim 12, further comprising: a door body, wherein the lock is disposed on the door body to control opening or closing of the door body. The security device for unlocking based on the eye opening state according to claim 12, further comprising: a prompting unit for prompting a current configuration state of the lock.