A fingerprint lock based on IoT verification technology

Abstract

This invention relates to a fingerprint lock based on Internet of Things (IoT) verification technology in the field of fingerprint lock technology. It includes a lock body, with a monitoring camera, a password verification unit, and a fingerprint collector mounted on the front of the lock body. The fingerprint collector is located above the handle. The password verification unit includes an upper verification area with a square cross-section and a lower verification area located below the upper verification area. The upper verification area includes a movable verification plate and a deceptive verification plate fixedly mounted on the front of the lock body. A pressure-emitting light plate is embedded on the back of the deceptive verification plate, and a pressure-sensing plate is connected to the back of the pressure-sensing plate. A hidden verification plate is connected to the back of the pressure-sensing plate, and a movable lever is mounted on the back of the hidden verification plate. A servo drive motor is installed inside the lock body. By installing the password verification unit, even if unauthorized individuals obtain the lock's password through other means, it is difficult for them to open the lock, thus strengthening the lock's security.

Description

Technical Field

[0001] The present invention relates to a fingerprint lock based on Internet of Things (IoT) verification technology, and more particularly to a fingerprint lock based on IoT verification technology applied in the field of fingerprint lock technology. Background Technology

[0002] Fingerprint locks are a widely used type of smart lock. They are intelligent locks that use human fingerprints as the identification medium and method. By combining fingerprint verification technology, password verification technology, and mechanical unlocking technology, they can achieve relatively intelligent verification processing, enabling fingerprint locks to support various unlocking methods. Furthermore, with the development of IoT technology, fingerprint lock verification technology has become more secure. However, in existing fingerprint locks, fingerprints remaining on the fingerprint collector surface can be easily collected and used by criminals, leading to a potential leak of the fingerprint verification information.

[0003] To address the issue of fingerprint information leakage, a certain fingerprint lock on the market employs a fingerprint cleaning design, which has a certain market share.

[0004] Chinese invention patent CN113338720B discloses a secure and reliable smart fingerprint lock based on the Internet of Things (IoT). The lock body includes a lock body with a keyhole, a rotary handle, a fingerprint sensor, and an operation panel installed sequentially from bottom to top at the center of the front surface. Infrared sensors are embedded on both sides of the top of the operation panel, and operation buttons are embedded on the front surface of the operation panel below the infrared sensors. A sliding cover is fitted onto the top of the lock body. This invention can clean residual fingerprints on the fingerprint lock and allows for fingerprint modification as needed, making the fingerprint lock more secure and intelligent. It solves the problem that fingerprint locks cannot clean residual fingerprints after use, and the inability to modify fingerprints makes residual fingerprints on the lock easy for malicious individuals to extract, leading to insecurity.

[0005] If criminals use the password they have spied on to unlock the fingerprint lock during use, they can unlock it without fingerprint verification, thus compromising the security of the fingerprint lock. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to prevent unauthorized persons from opening the fingerprint lock in the event of password leakage, thereby protecting the security of the fingerprint lock.

[0007] To address the aforementioned issues, this invention provides a fingerprint lock based on IoT verification technology, comprising a lock body, a handle and a speaker mounted on the front of the lock body, a baffle slidably connected to the front of the lock body, a monitoring camera, a password verification unit, and a fingerprint collector arranged sequentially from top to bottom on the front of the lock body, with the fingerprint collector located above the handle, and the monitoring camera, password verification unit, and fingerprint collector all located behind the baffle. The password verification unit includes an upper verification area with a square cross-section and a lower verification area located below the upper verification area. The upper verification area includes a movable verification plate and a deceptive verification plate fixedly mounted on the front of the lock body. A pressure-emitting light plate is embedded on the back of the deceptive verification plate, a pressure-sensing plate is connected to the back of the pressure-emitting light plate, a hidden verification plate is connected to the back of the pressure-sensing plate, and a movable sleeve is mounted on the back of the hidden verification plate. A servo drive motor is installed inside the lock body, capable of rotating the movable verification plate 180 degrees, and the output end of the servo drive motor is connected to the end of the movable sleeve. The servo drive motor is electrically connected to the monitoring camera, and the pressure-emitting light plate, pressure-sensing plate, and servo drive motor are electrically connected to each other.

[0008] In the aforementioned fingerprint lock based on IoT verification technology, a password verification unit is installed, which makes it difficult for unauthorized individuals to open the lock even if they obtain the password through other means, provided they do not have visitor privileges. This strengthens the security of the lock.

[0009] As a further improvement of this application, the surveillance camera is installed at an upward angle, and a storage unit and a comparison unit are installed inside the surveillance camera.

[0010] As a further improvement of this application, a first pressure sensor and a first light-emitting block are installed on the surface of the pressure-emitting plate and the lower verification area, and a second light-emitting block is installed on the surface of the pressure-emitting plate and the lower verification area. The first pressure sensor is electrically connected to the first light-emitting block and the second light-emitting block, and the second light-emitting block is electrically connected to the comparison unit.

[0011] As a further improvement of this application, the movable sleeve is a miniature electric telescopic structure, and the movable sleeve is electrically connected to the comparison unit.

[0012] As a further improvement of this application, the front of the lock body is provided with a recess, and a servo motor is installed inside the recess. The output end of the servo motor is connected to the surface of the fingerprint collector, and the fingerprint collector is located in the recess. The servo motor is electrically connected to the first pressure sensor.

[0013] As a further improvement of this application, a micro counter is installed inside the servo motor, and the micro counter is electrically connected to the servo motor.

[0014] As another improvement of this application, a cleaning unit is installed inside the lock body. The cleaning unit includes a round shaft rod with both ends connected to the inner wall of the lock body via bearings. Both ends of the round shaft rod are connected to a spiral spring. A placement frame plate is installed on the surface of the round shaft rod. A movable cleaning plate is slidably connected inside the placement frame plate. A magnetic plate is connected to the bottom of the movable cleaning plate. A spring strip is connected to the bottom of the magnetic plate. An electromagnetic belt is installed on the bottom wall of the placement frame plate, and the surface of the electromagnetic belt is connected to the tail end of the spring strip. There is a magnetic attraction between the electromagnetic belt and the magnetic plate.

[0015] As a further improvement to this application, the fixed end of the spiral spring is connected to the inner wall of the lock body, the movable end of the spiral spring is connected to the surface of the round shaft rod, the surface of the round shaft rod is equipped with a tilt sensor, and the tilt sensor is electromagnetically connected.

[0016] As a further improvement to this application, the vertical distance between the bottom of the fingerprint collector and the cylindrical rod is less than the sum of the heights of the movable cleaning plate and the placement frame plate.

[0017] In summary, this invention, by installing a password verification unit, ensures that even if unauthorized individuals obtain the lock's password through other means, they will find it difficult to open the lock even if the password is entered correctly without visitor access. This serves to confuse and deter unauthorized individuals, providing time for floor security personnel to apprehend them and enhancing the lock's security. Furthermore, the combination of a clearing unit and a servo motor ensures that each fingerprint entry is cleared, facilitating clearer identification for subsequent entries and preventing the leakage of fingerprint information. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the first and second embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the lock body surface mounting structure according to the first and second embodiments of this application;

[0020] Figure 3 This is a schematic diagram showing the installation of the active verification plate, the active sleeve, and the servo drive motor in the first and second embodiments of this application.

[0021] Figure 4 This is a schematic diagram showing the installation of the deceptive verification board, pressure-emitting board, pressure-sensing board, and hidden verification board according to the first and second embodiments of this application.

[0022] Figure 5 This is a schematic diagram showing the state of the hidden verification board after it has been flipped in the first and second embodiments of this application.

[0023] Figure 6 This is a schematic diagram showing the installation of the servo motor, fingerprint collector, and clearing unit according to the first and second embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the clearing unit structure according to the second embodiment of this application;

[0025] Figure 8 This is a schematic diagram illustrating the process of the active cleaning plate rising according to the second embodiment of this application;

[0026] Figure 9 This is a schematic diagram illustrating the process of resetting the active cleaning plate according to the second embodiment of this application.

[0027] Explanation of the labels in the diagram:

[0028] 1. Lock body; 2. Speaker; 3. Handle; 4. Fingerprint collector; 41. Servo motor; 5. Password verification unit; 51. Upper verification area; 52. Lower verification area; 53. Movable verification plate; 54. Movable sleeve rod; 55. Servo drive motor; 511. Deceptive verification plate; 512. Pressure luminous plate; 531. Pressure sensing plate; 532. Hidden verification plate; 6. Cleaning unit; 61. Movable cleaning plate; 62. Placement frame plate; 63. Round shaft rod; 64. Spiral spring; 65. Electromagnetic belt; 66. Spring strip; 67. Magnetic plate; 7. Baffle; 8. Monitoring camera. Detailed Implementation

[0029] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0030] Implementation method 1:

[0031] Figures 1-6This invention illustrates a fingerprint lock based on IoT verification technology, comprising a lock body 1. A handle 3 and a speaker 2 located below the handle 3 are mounted on the front of the lock body 1. A baffle 7 is slidably connected to the front of the lock body 1. A monitoring camera 8, a password verification unit 5, and a fingerprint collector 4 are arranged sequentially from top to bottom on the front of the lock body 1, with the fingerprint collector 4 located above the handle 3. The monitoring camera 8, password verification unit 5, and fingerprint collector 4 are all located behind the baffle 7. The password verification unit 5 includes an upper verification area 51 with a square cross-section and a lower verification area 52 located below the upper verification area 51. The upper verification area 51 includes a movable verification plate 53 and a decoy fixedly mounted on the front of the lock body 1. The verification board 511 is concealed on the back. A pressure luminous plate 512 is embedded on the back of the deceptive verification board 511. A pressure sensing plate 531 is connected to the back of the pressure luminous plate 512. A hidden verification board 532 is connected to the back of the pressure sensing plate 531. A movable sleeve rod 54 is installed on the back of the hidden verification board 532. A servo drive motor 55 is installed inside the lock body 1. The servo drive motor 55 can drive the movable verification board 53 to rotate 180 degrees. The output end of the servo drive motor 55 is connected to the end of the movable sleeve rod 54. The servo drive motor 55 is electrically connected to the monitoring lens 8. The pressure luminous plate 512, the pressure sensing plate 531, and the servo drive motor 55 are electrically connected.

[0032] The surveillance camera 8 is installed at an upward angle, and a storage unit and a comparison unit are installed inside the surveillance camera 8.

[0033] A first pressure sensor and a first light-emitting block are installed on the surfaces of the pressure-emitting plate 512 and the lower verification area 52, and a second light-emitting block is installed on the surfaces of the pressure-emitting plate 531 and the lower verification area 52. The first pressure sensor is electrically connected to the first light-emitting block and the second light-emitting block, and the second light-emitting block is electrically connected to the comparison unit.

[0034] The movable sleeve 54 is a miniature electric telescopic structure, and the movable sleeve 54 is electrically connected to the comparison unit.

[0035] Specifically, when the person attempting to unlock the lock in front of the lock body 1 is not in the storage unit, the facial image information captured by the monitoring camera 8 is sent to the homeowner's mobile phone, which is wirelessly connected to the lock body 1. The homeowner judges the transmitted facial image information and determines whether it is a visitor or other unadded person who can enter. The homeowner then manually adds the person to the storage unit for updating (visitors are divided into single visitors and multiple visitors. Single visitors are stored in the storage unit for only the day, while multiple visitors can be stored for a long time). The homeowner then sends the corresponding valid and randomly generated visitor password for the day to the visitor's mobile phone, and the visitor can then enter the room.

[0036] If the determination result is an illegal element, the movable sleeve 54 shortens while the servo drive motor 55 starts, causing the movable verification plate 53 to rotate 180 degrees, making the square movable verification plate 53 flip and causing the verification numbers on the surface of the movable verification plate 53 to be misaligned with the verification numbers on the surface of the deception verification plate 511. Then the movable sleeve 54 extends and makes the back of the movable verification plate 53 and the deception verification plate 511 fit tightly again. At this time, when the illegal element enters the illegally obtained password, since the password is pressed on the surface of the deception verification plate 511 and the lower verification area 52, but the actual verification number pressed is the verification number on the surface of the flipped hidden verification plate 532 (the lock body 1 will only open when the verification number on the surface of the hidden verification plate 532 is entered correctly), even if the illegal element obtains the password, it will not open the lock body 1. At the same time, it can confuse the illegal element, prolong the time the illegal element stays in front of the lock body 1 and reduce vigilance, making it easier to catch the illegal element.

[0037] Furthermore, when an unauthorized person enters a password on the surface of the deception verification board 511 and the lower verification area 52, the first pressure sensor senses the pressure (due to the pressure sensing phenomenon caused by the pressing operation), and then the first light-emitting block lights up while the second light-emitting block turns off. This causes the pressing areas of both the upper verification area 51 and the lower verification area 52 to light up when the unauthorized person enters the password, thus making the light state the same as that of normal input. This leads the unauthorized person to believe that the password verification unit 5 is in normal working condition, thereby enhancing the deception effect.

[0038] When the image information in the human-stored unit is entered (that is, when a person authorized to open lock body 1 enters the password to unlock), the verification numbers on the surface of the active verification board 53 and the deception verification board 511 overlap and are placed in the same position. Therefore, when the correct password is entered, the first light-emitting block and the second light-emitting block are the same color, which is normal color, making it easy for the user to identify the entered numbers. However, when the wrong password is entered (there may be cases where the password is forgotten or misremembered), the light color emitted by the second light-emitting block is different from that of the first light-emitting block (the color of the first light-emitting block is fixed), which serves as a corresponding prompt.

[0039] In summary, the password verification unit 5 ensures that even if unauthorized individuals obtain the password for lock body 1 through other means, they will be unable to open lock body 1 even if the password is entered correctly without visitor access (i.e., without passing the verification by the comparison unit). This serves to confuse and prevent unauthorized individuals from entering the password, providing time for floor security personnel to apprehend them and simultaneously strengthening the security of lock body 1.

[0040] The front of the lock body 1 has a recess, and a servo motor 41 is installed inside the recess. The output end of the servo motor 41 is connected to the surface of the fingerprint collector 4, and the fingerprint collector 4 is located in the recess. The servo motor 41 is electrically connected to the first pressure sensor.

[0041] The servo motor 41 has a micro counter installed inside it, and the micro counter is electrically connected to the servo motor 41.

[0042] Specifically, the threshold number of password input attempts allowed per lock body 1 is set, either to three or five. After the servo motor 41 is started, the micro counter can send a shutdown signal to the servo motor 41 when the count value reaches the set threshold number. At this time, the servo motor 41 fails to drive the fingerprint collector 4 to reset, causing the fingerprint collector 4 to be trapped in the recess of the lock body 1, preventing the fingerprint verification operation from continuing.

[0043] The second implementation method:

[0044] Figures 6-9 The lock body 1 is shown to have a cleaning unit 6 installed inside. The cleaning unit 6 includes a round shaft 63 with both ends connected to the inner wall of the lock body 1 via bearings. Both ends of the round shaft 63 are connected to a spiral spring 64. A placement frame plate 62 is installed on the surface of the round shaft 63. A movable cleaning plate 61 is slidably connected inside the placement frame plate 62. A magnetic plate 67 is connected to the bottom of the movable cleaning plate 61. A spring strip 66 is connected to the bottom of the magnetic plate 67. An electromagnetic belt 65 is installed on the bottom wall of the placement frame plate 62. The surface of the electromagnetic belt 65 is connected to the tail end of the spring strip 66. The electromagnetic belt 65 and the magnetic plate 67 have a magnetic attraction.

[0045] The fixed end of the spiral spring 64 is connected to the inner wall of the lock body 1, and the movable end of the spiral spring 64 is connected to the surface of the round shaft rod 63. An inclination sensor is installed on the surface of the round shaft rod 63, and the inclination sensor is electrically connected to the electromagnetic belt 65.

[0046] The vertical distance between the bottom of the fingerprint collector 4 and the round shaft 63 is less than the sum of the heights of the movable cleaning plate 61 and the placement frame plate 62.

[0047] Specifically, in the initial state, the fingerprint collector 4 is placed vertically and presses against the movable cleaning plate 61 made of flexible cleaning material, so that the spring strip 66 is in a compressed state.

[0048] After a single press of the fingerprint collector 4, the fingerprint collector 4 verifies the fingerprint information and simultaneously sends an electrical signal to the servo motor 41, causing the fingerprint collector 4 to deflect. This, in turn, causes the movable cleaning plate 61 and the round shaft 63 to deflect. The tilt sensor sends a start / stop signal to the electromagnetic belt 65. At this time, the movable cleaning plate 61 is no longer pressed by the fingerprint collector 4 and is lifted upwards under the action of the spring strip 66. Subsequently, the servo motor 41 drives the fingerprint collector 4 to reset. During this process, the fingerprint collector 4 contacts the raised movable cleaning plate 61 and wipes and cleans the fingerprints on its surface. This not only cleans the surface of the fingerprint collector 4 to facilitate the clarity of the next round of fingerprint verification, but also prevents the leakage of fingerprint information.

[0049] In addition, the fingerprint collector 4 causes the movable cleaning plate 61 and the round shaft 63 to deflect to a certain extent, and then the two separate. The round shaft 63 is reset under the action of the spiral spring 64, and at the same time the electromagnetic belt 65 is activated and attracts the magnetic plate 67, so that the movable cleaning plate 61 in the storage state can re-press and contact the bottom of the fingerprint collector 4.

[0050] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. An Internet of Things authentication technology-based fingerprint lock, comprising a lock body (1), a handle (3) and a loudspeaker (2) located below the handle (3) being mounted on the front face of the lock body (1), characterized in that: The front of the lock body (1) is slidably connected with a baffle (7), the front of the lock body (1) is provided with a monitoring lens (8), a password verification unit (5) and a fingerprint collector (4) arranged from top to bottom in sequence, and the fingerprint collector (4) is located above the handle (3), the monitoring lens (8), the password verification unit (5) and the fingerprint collector (4) are located behind the baffle (7), the password verification unit (5) comprises an upper verification area (51) with a square cross section and a lower verification area (52) located below the upper verification area (51), the upper verification area (51) comprises a movable verification plate (53) and a deceptive verification plate (511) fixedly installed on the front of the lock body (1), the back of the deceptive verification plate (511) is embeddedly installed with a pressure light-emitting plate (512), the back of the pressure light-emitting plate (512) is connected with a pressure sensing plate (531), the back of the pressure sensing plate (531) is connected with a hidden verification plate (532), the back of the hidden verification plate (532) is installed with a movable sleeve rod (54), the inside of the lock body (1) is installed with a servo drive motor (55), the servo drive motor (55) can drive the movable verification plate (53) to rotate by 180 degrees, and the output end of the servo drive motor (55) is connected with the end of the movable sleeve rod (54), the servo drive motor (55) is electrically connected with the monitoring lens (8), and the pressure light-emitting plate (512), the pressure sensing plate (531) and the servo drive motor (55) are electrically connected.

2. The fingerprint lock based on the Internet of Things authentication technology according to claim 1, characterized in that: The monitoring lens (8) is installed obliquely upward, and the inside of the monitoring lens (8) is installed with a storage unit and a comparison unit.

3. The fingerprint lock based on the Internet of Things authentication technology according to claim 2, characterized in that: The surface of the pressure light-emitting plate (512) and the lower verification area (52) is installed with a first pressure sensor and a first light-emitting block, the surface of the pressure sensing plate (531) and the lower verification area (52) is installed with a second light-emitting block, the first pressure sensor and the first light-emitting block and the second light-emitting block are electrically connected, and the second light-emitting block is electrically connected with the comparison unit.

4. The fingerprint lock based on the Internet of Things authentication technology according to claim 2, characterized in that: The movable sleeve rod (54) is a micro electric telescopic structure, and the movable sleeve rod (54) is electrically connected with the comparison unit.

5. The fingerprint lock based on the Internet of Things authentication technology according to claim 4, characterized in that: The front of the lock body (1) is provided with a recess, and the inside of the recess is installed with a servo motor (41), the output end of the servo motor (41) is connected with the surface of the fingerprint collector (4), and the fingerprint collector (4) is located in the recess, and the servo motor (41) is electrically connected with the first pressure sensor.

6. The fingerprint lock based on the Internet of Things authentication technology according to claim 5, characterized in that: The inside of the servo motor (41) is installed with a micro counter, and the micro counter is electrically connected with the servo motor (41).

7. The fingerprint lock based on the Internet of Things authentication technology according to claim 1, characterized in that: The inside of the lock body (1) is internally provided with a cleaning unit (6), the cleaning unit (6) comprises a round shaft rod (63) with both ends connected with the inner wall of the lock body (1) through bearings, both ends of the round shaft rod (63) are connected with a spiral spring (64), the surface of the round shaft rod (63) is provided with a placing frame plate (62), the inside of the placing frame plate (62) is slidably connected with a movable cleaning plate (61), the bottom of the movable cleaning plate (61) is connected with a magnetic sheet plate (67), the bottom of the magnetic sheet plate (67) is connected with a spring strip (66), the bottom wall of the placing frame plate (62) is provided with an electromagnetic tape (65), and the surface of the electromagnetic tape (65) is connected with the tail end of the spring strip (66), and the electromagnetic tape (65) and the magnetic sheet plate (67) have magnetic attraction.

8. The fingerprint lock based on the Internet of Things authentication technology according to claim 7, characterized in that: The fixed end of the spiral spring (64) is connected to the inner wall of the lock body (1), and the movable end of the spiral spring (64) is connected to the surface of the round shaft rod (63), the surface of the round shaft rod (63) is provided with an inclination sensor, and the inclination sensor is electrically connected with the electromagnetic tape (65).

9. The fingerprint lock based on the Internet of Things authentication technology according to claim 8, characterized in that: The vertical distance value between the bottom of the fingerprint collector (4) and the round shaft rod (63) is less than the sum of the height values of the movable cleaning plate (61) and the placing frame plate (62).

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