CN112991594A - Fingerprint lock and unlocking method thereof - Google Patents
Fingerprint lock and unlocking method thereof Download PDFInfo
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- CN112991594A CN112991594A CN202110355450.2A CN202110355450A CN112991594A CN 112991594 A CN112991594 A CN 112991594A CN 202110355450 A CN202110355450 A CN 202110355450A CN 112991594 A CN112991594 A CN 112991594A
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- fingerprint image
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012795 verification Methods 0.000 claims abstract description 58
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005057 finger movement Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a fingerprint lock and an unlocking method thereof, wherein the unlocking method comprises the following steps: collecting a fingerprint image of a user; judging whether the acquired fingerprint image meets the verification standard or not; comparing the fingerprint image with a registered standard fingerprint when the fingerprint image meets the verification standard; and judging whether to perform unlocking operation according to the comparison result. The fingerprint lock and the unlocking method thereof provided by the invention firstly judge whether the collected fingerprint image meets the verification standard, compare the fingerprint image with the registered standard fingerprint when the fingerprint image meets the verification standard, and then judge whether to perform the unlocking operation according to the comparison result, thereby being capable of improving the success rate of fingerprint identification.
Description
Technical Field
The invention relates to a fingerprint lock and an unlocking method thereof.
Background
The existing fingerprint identification method has the phenomenon of high false rejection rate or the phenomenon of high first identification failure rate after the lock is awakened. The stored registered fingerprint information is usually collected and stored for the central position of the registered finger and the information of the extended extension part of the central position. When the user awakens the lockset by touching the fingerprint acquisition sensor, the position of the finger pressing the fingerprint acquisition sensor is random, when the finger presses the edge position of the sensor (on the upper side, on the lower side, on the left side and on the right side), the sensor acquires information of the detected finger, or the sensor acquires fingerprint information in the process of finger movement, and the acquired fingerprint information is incomplete. At this time, the comparison with the stored registered fingerprint information may result in a failure.
Disclosure of Invention
The invention provides a fingerprint lock and an unlocking method thereof, which adopt the following technical scheme:
a fingerprint lock unlocking method comprises the following steps:
collecting a fingerprint image of a user;
judging whether the acquired fingerprint image meets the verification standard or not;
comparing the fingerprint image with a registered standard fingerprint when the fingerprint image meets the verification standard;
and judging whether to perform unlocking operation according to the comparison result.
Further, the specific method for judging whether the acquired fingerprint image meets the verification standard comprises a position judgment step:
the position judging step comprises:
judging whether the fingerprint image is positioned in the middle of the finger fingerprint;
if the fingerprint image is positioned in the middle of the fingerprint of the finger, the verification is passed;
if the fingerprint image is not located in the middle of the fingerprint of the finger, the voice prompts the user to move the finger to the middle of the acquisition area of the fingerprint acquisition module for re-acquisition.
Further, after passing the position determination step, the specific method of determining whether the acquired fingerprint image meets the verification standard further comprises an area determination step:
the area judging step comprises:
judging whether the fingerprint image reaches a preset area or not;
if the fingerprint image reaches the preset area, the verification is passed;
if the fingerprint image does not reach the preset area, the user is prompted by voice to increase the contact area of the finger and the acquisition area of the fingerprint acquisition module.
Further, after passing the position determination step, the specific method of determining whether the acquired fingerprint image meets the verification standard further comprises an area determination step:
the area judging step comprises:
judging whether the user is an adult or a child according to the fingerprint image:
if the user is an adult, judging whether the fingerprint image reaches a first preset area;
if the fingerprint image reaches the first preset area, the verification is passed;
if the fingerprint image does not reach the first preset area, the user is prompted by voice to increase the contact area between the finger and the acquisition area of the fingerprint acquisition module;
if the user is a child, judging whether the fingerprint image reaches a second preset area, wherein the second preset area is smaller than the first preset area;
if the fingerprint image reaches the second preset area, the verification is passed;
if the fingerprint image does not reach the second preset area, the voice prompts the user to increase the contact area between the finger and the acquisition area of the fingerprint acquisition module.
Further, before acquiring the fingerprint image of the user, the fingerprint lock unlocking method further comprises the following steps:
receiving fingerprint pressing operation of a user to wake up a fingerprint lock.
A fingerprint lock, comprising:
the fingerprint acquisition module is used for acquiring a fingerprint image of a user;
the main control module is used for judging whether the acquired fingerprint image meets the verification standard or not;
the storage module is used for storing standard fingerprints preset and registered by a user;
the voice module is used for sending out voice to prompt a user;
the main control module compares the fingerprint image with the standard fingerprint stored in the storage module after judging that the fingerprint image meets the verification standard;
and the main control module judges whether to carry out unlocking operation according to the comparison result.
Further, the specific method for the main control module to judge whether the acquired fingerprint image is located in the middle of the finger fingerprint comprises the following position judging steps:
the position judging step comprises:
the main control module judges whether the fingerprint image is positioned in the middle of the finger fingerprint;
if the fingerprint image is positioned in the middle of the fingerprint of the finger, the verification is passed;
if the fingerprint image is not located in the middle of the fingerprint of the finger, the voice module prompts the user to move the finger to the middle position of the acquisition area of the fingerprint acquisition module for re-acquisition.
Further, after the step of determining the position, the specific method for the main control module to determine whether the collected fingerprint image is located in the middle of the finger fingerprint further comprises the step of determining the area:
the area judging step comprises:
the main control module judges whether the fingerprint image reaches a preset area or not;
if the fingerprint image reaches the preset area, the verification is passed;
the fingerprint image does not reach the preset area, and then the user is prompted to increase the contact area of the finger and the collection area of the fingerprint collection module through the voice module.
Further, after the step of determining the position, the specific method for the main control module to determine whether the collected fingerprint image is located in the middle of the finger fingerprint further comprises the step of determining the area:
the area judging step comprises:
the main control module judges whether the user is an adult or a child according to the fingerprint image:
if the user is an adult, the main control module judges whether the fingerprint image reaches a first preset area;
if the fingerprint image reaches the first preset area, the verification is passed;
if the fingerprint image does not reach the first preset area, prompting a user to increase the contact area of the finger and the acquisition area of the fingerprint acquisition module through the voice module;
if the user is a child, the main control module judges whether the fingerprint image reaches a second preset area, and the second preset area is smaller than the first preset area;
if the fingerprint image reaches the second preset area, the verification is passed;
if the fingerprint image does not reach the second preset area, the user is prompted to increase the contact area of the finger and the acquisition area pair of the fingerprint acquisition module through the voice module.
Furthermore, the fingerprint acquisition module sends a wake-up instruction to the main control module after receiving the pressing operation of the user, and the main control module wakes up the fingerprint lock after receiving the wake-up instruction.
The fingerprint lock and the unlocking method thereof have the beneficial effects that whether the acquired fingerprint image meets the verification standard or not is judged firstly. And when the fingerprint image meets the verification standard, comparing the fingerprint image with the registered standard fingerprint, and judging whether to unlock according to the comparison result. This can improve the success rate of fingerprint identification.
Drawings
FIG. 1 is a schematic view of a fingerprint lock of the present invention;
fig. 2 is a schematic diagram of an unlocking method of the fingerprint lock of the present invention.
The fingerprint lock comprises a fingerprint lock 10, a fingerprint acquisition module 11, a main control module 12, a storage module 13 and a voice module 14.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Referring to fig. 1 and 2, the present invention discloses a fingerprint lock and an unlocking method thereof. The fingerprint lock 10 comprises: fingerprint collection module 11, main control module 12, storage module 13 and voice module 14. The fingerprint acquisition module 11 is used for acquiring a fingerprint image of a user. The main control module 12 is used for judging whether the acquired fingerprint image meets the verification standard. The storage module 13 is used for storing standard fingerprints preset and registered by a user. The voice module 14 is used for sending out voice to prompt the user. The main control module 12 compares the fingerprint image with the standard fingerprint stored in the storage module 13 after judging that the fingerprint image meets the verification standard. The main control module 12 determines whether to perform an unlocking operation according to the comparison result.
The scheme also provides an unlocking method of the fingerprint lock 10, and the method for unlocking the fingerprint by applying the fingerprint lock 10 comprises the following steps: fingerprint images of the user are collected. And judging whether the acquired fingerprint image meets the verification standard. And comparing the fingerprint image with the registered standard fingerprint when the fingerprint image meets the verification standard. And judging whether to perform unlocking operation according to the comparison result.
For the step "acquiring a fingerprint image of a user" means: the user puts the fingerprint on the fingerprint acquisition module 11 of the fingerprint lock 10 to perform fingerprint acquisition so as to acquire a fingerprint image of the user.
Aiming at the step of judging whether the acquired fingerprint image meets the verification standard or not, the method comprises the following steps of: the main control module 12 determines whether the fingerprint image meets the verification standard according to the fingerprint image collected by the fingerprint collecting module 11. The verification standard here means that the area of the fingerprint image for identification is set in the main control module 12 to be larger than a preset area, so that the fingerprint image meets the verification standard.
Aiming at the step of comparing the fingerprint image with the registered standard fingerprint when the fingerprint image meets the verification standard, the method comprises the following steps: after the main control module 12 determines that the fingerprint image acquired by the fingerprint acquisition module 11 meets the verification standard, the fingerprint image is compared with the registered standard fingerprint stored in the main control module 12. The standard fingerprint is registered in advance by the user and is recorded in the storage module 13.
The step of judging whether to perform unlocking operation according to the comparison result refers to the following steps: after the main control module 12 compares the fingerprint image with the standard fingerprint, if the comparison result is consistent, the fingerprint lock 10 is controlled to unlock. After the main control module 12 compares the fingerprint image with the standard fingerprint, if the comparison result is inconsistent, the fingerprint lock 10 is controlled not to be unlocked.
Further, the specific method for judging whether the acquired fingerprint image meets the verification standard comprises a position judgment step. The position judging step comprises: and judging whether the fingerprint image is positioned in the middle of the fingerprint of the finger or not, so that the accuracy of fingerprint image verification can be improved. If the fingerprint image is located in the middle of the finger fingerprint, the verification is passed, and the fingerprint image is in accordance with the verification standard. If the fingerprint image is not located in the middle of the fingerprint of the finger, the voice module 14 prompts the user to move the finger to the middle position of the collection area of the fingerprint collection module 11 for collection again. Through the fingerprint acquisition steps, the fingerprint image acquired by the user can be ensured to accord with the verification standard.
As an embodiment, after passing the position determination step, the specific method for determining whether the collected fingerprint image meets the verification standard further comprises an area determination step. The area judging step comprises: and judging whether the fingerprint image reaches a preset area, namely judging whether the fingerprint image meets the verification standard. If the fingerprint image reaches the preset area, the verification is passed, and the fingerprint image can be compared with the standard fingerprint in the storage module 13. If the fingerprint image does not reach the preset area, the voice module 14 prompts the user to increase the contact area between the finger and the collection area of the fingerprint collection module 11, so that the fingerprint collection module 11 can collect the fingerprint image meeting the verification standard.
As an embodiment, after passing the position determination step, the specific method for determining whether the collected fingerprint image meets the verification standard further comprises an area determination step. The area judging step comprises:
judging whether the user is an adult or a child according to the fingerprint image, wherein the sizes of fingers of the adult and the child are different, so that the authentication standards of the adult and the child are different when the fingerprint image is collected, the authentication standard of the fingerprint image of the adult is set to be that the area of the fingerprint image of the adult is larger than a first preset area, the authentication standard of the fingerprint image of the child is set to be that the area of the fingerprint image of the child is larger than a second preset area, and the second preset area is smaller than the first preset area.
If the main control module 12 determines that the user is an adult according to the fingerprint image, it determines whether the fingerprint image reaches a first preset area. And if the fingerprint image reaches the first preset area, the verification is passed. If the fingerprint image does not reach the first preset area, the voice prompts the user to increase the contact area between the finger and the acquisition area of the fingerprint acquisition module 11.
If the main control module 12 judges that the user is a child according to the fingerprint image, it is judged whether the fingerprint image reaches a second preset area.
And if the fingerprint image reaches the second preset area, the verification is passed. If the fingerprint image does not reach the second preset area, the voice prompts the user to increase the contact area between the finger and the acquisition area of the fingerprint acquisition module 11.
As a specific embodiment, before acquiring the fingerprint image of the user, the method for unlocking the fingerprint lock 10 further includes:
receiving a fingerprint pressing operation of a user to wake up the fingerprint lock 10. That is, the fingerprint lock 10 enters a sleep state when it is not in contact for a certain period of time, and the user can wake up the fingerprint lock 10 by pressing the fingerprint.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. A fingerprint lock unlocking method is characterized by comprising the following steps:
collecting a fingerprint image of a user;
judging whether the acquired fingerprint image meets the verification standard or not;
comparing the fingerprint image with a registered standard fingerprint when the fingerprint image meets the verification standard;
and judging whether to perform unlocking operation according to the comparison result.
2. The fingerprint lock unlocking method according to claim 1,
the specific method for judging whether the acquired fingerprint image meets the verification standard comprises the following position judgment steps:
the position judging step includes:
judging whether the fingerprint image is positioned in the middle of the finger fingerprint;
if the fingerprint image is located in the middle of the finger fingerprint, the verification is passed;
if the fingerprint image is not located in the middle of the finger fingerprint, the voice prompts the user to move the finger to the middle of the acquisition area of the fingerprint acquisition module for re-acquisition.
3. The fingerprint lock unlocking method according to claim 2,
after passing the position judgment step, the specific method for judging whether the acquired fingerprint image meets the verification standard further comprises an area judgment step:
the area judging step includes:
judging whether the fingerprint image reaches a preset area or not;
if the fingerprint image reaches the preset area, the verification is passed;
if the fingerprint image does not reach the preset area, the user is prompted by voice to increase the contact area of the finger and the acquisition area of the fingerprint acquisition module.
4. The fingerprint lock unlocking method according to claim 2,
after passing the position judgment step, the specific method for judging whether the acquired fingerprint image meets the verification standard further comprises an area judgment step:
the area judging step includes:
judging whether the user is an adult or a child according to the fingerprint image:
if the user is an adult, judging whether the fingerprint image reaches a first preset area;
if the fingerprint image reaches the first preset area, the verification is passed;
if the fingerprint image does not reach the first preset area, the user is prompted by voice to increase the contact area of the finger and the acquisition area of the fingerprint acquisition module;
if the user is a child, judging whether the fingerprint image reaches a second preset area, wherein the second preset area is smaller than the first preset area;
if the fingerprint image reaches the second preset area, the verification is passed;
if the fingerprint image does not reach the second preset area, the user is prompted by voice to increase the contact area of the finger and the acquisition area of the fingerprint acquisition module.
5. The fingerprint lock unlocking method according to claim 1,
before the acquiring the fingerprint image of the user, the fingerprint lock unlocking method further comprises the following steps:
and receiving fingerprint pressing operation of a user to wake up the fingerprint lock.
6. A fingerprint lock, comprising:
the fingerprint acquisition module is used for acquiring a fingerprint image of a user;
the main control module is used for judging whether the acquired fingerprint image meets the verification standard or not;
the storage module is used for storing standard fingerprints preset and registered by a user;
the voice module is used for sending out voice to prompt a user;
the main control module compares the fingerprint image with the standard fingerprint stored in the storage module after judging that the fingerprint image meets the verification standard;
and the main control module judges whether to perform unlocking operation according to the comparison result.
7. The fingerprint lock of claim 6,
the specific method for judging whether the acquired fingerprint image is positioned in the middle of the finger fingerprint by the main control module comprises the following position judgment steps:
the position judging step includes:
the main control module judges whether the fingerprint image is positioned in the middle of the finger fingerprint;
if the fingerprint image is located in the middle of the finger fingerprint, the verification is passed;
if the fingerprint image is not located in the middle of the finger fingerprint, the voice module prompts the user to move the finger to the middle position of the acquisition area of the fingerprint acquisition module for re-acquisition.
8. The fingerprint lock of claim 7,
after the position judging step, the specific method for judging whether the acquired fingerprint image is positioned in the middle of the finger fingerprint by the main control module further comprises an area judging step:
the area judging step includes:
the main control module judges whether the fingerprint image reaches a preset area;
if the fingerprint image reaches the preset area, the verification is passed;
the fingerprint image does not reach the preset area, and then the voice module prompts a user to increase the contact area between the finger and the acquisition area of the fingerprint acquisition module.
9. The fingerprint lock unlocking method according to claim 7,
after the position judging step, the specific method for judging whether the acquired fingerprint image is positioned in the middle of the finger fingerprint by the main control module further comprises an area judging step:
the area judging step includes:
the main control module judges whether the user is an adult or a child according to the fingerprint image:
if the user is an adult, the main control module judges whether the fingerprint image reaches a first preset area;
if the fingerprint image reaches the first preset area, the verification is passed;
if the fingerprint image does not reach the first preset area, prompting a user to increase the contact area of a finger and an acquisition area of the fingerprint acquisition module through the voice module;
if the user is a child, the main control module judges whether the fingerprint image reaches a second preset area, and the second preset area is smaller than the first preset area;
if the fingerprint image reaches the second preset area, the verification is passed;
if the fingerprint image does not reach the second preset area, prompting the user to increase the contact area of the finger and the acquisition area pair of the fingerprint acquisition module through the voice module.
10. The fingerprint lock of claim 6,
the fingerprint acquisition module sends a wake-up instruction to the main control module after receiving the pressing operation of a user, and the main control module wakes up the fingerprint lock after receiving the wake-up instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110355450.2A CN112991594A (en) | 2021-04-01 | 2021-04-01 | Fingerprint lock and unlocking method thereof |
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| CN202110355450.2A CN112991594A (en) | 2021-04-01 | 2021-04-01 | Fingerprint lock and unlocking method thereof |
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| CN112991594A true CN112991594A (en) | 2021-06-18 |
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