CN212009656U

CN212009656U - Anti-interference intelligent lock

Info

Publication number: CN212009656U
Application number: CN202020920968.7U
Authority: CN
Inventors: 刘裕刚
Original assignee: Dessmann China Machinery and Electronic Co Ltd
Current assignee: Zhejiang Deshiman Technology Intelligence Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-11-24
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses an anti-interference intelligent lock belongs to intelligent lock technical field. Including MCU module, motor control module and power control module, still include button scanning module, fingerprint module and the face identification module of being connected with the MCU module electricity respectively, the MCU module is connected with motor control module and power control module electricity respectively, be connected through on-off control between power control module and the motor control module. The intelligent lock is opened by the interference of Tesla, interphone signals and the like in the prior art, and the technical problem of potential safety hazards exists.

Description

Anti-interference intelligent lock

Technical Field

The utility model relates to an intelligence lock technical field, concretely relates to anti-interference intelligence lock.

Background

The domestic tool to lock that provides in the market at present is the intelligence lock many, and intelligence lock is different from traditional mechanical lock, is a compound tool to lock that has security, convenience and advanced technology. However, the electric control system of the intelligent lock has technical risks of being interfered by Tesla coil signals, a high-power interphone and the like to open, and potential safety hazards exist. Therefore, it is necessary to design an intelligent lock which has wide universality and high safety factor and can prevent the unlocking of Tesla and other interference signals.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

To intelligent lock among the prior art have by the interference such as Tesla, intercom signal and open, have the technical problem of potential safety hazard, the utility model provides an anti-interference intelligent lock through the power control unit who increases the motor, can improve intelligent lock interference killing feature, can make intelligent lock not unblank because of disturbing automatically, avoid the potential safety hazard of intelligent lock.

2. Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

the utility model provides an anti-interference intelligent lock, includes MCU module, motor control module and power control module, still includes button scanning module, fingerprint module and the face identification module of being connected with the MCU module electricity respectively, the MCU module is connected with motor control module and power control module electricity respectively, be connected through on-off control between power control module and the motor control module.

Optionally, the power control module includes a power source VIN, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch Q1, a second switch Q2, an ESD tube E1, a MOTOR power VCC _ MOTOR, and a MOTOR power control terminal POW _ MOTOR, where the power source VIN is electrically connected to one end of the first capacitor C1, one end of the first resistor R1, and a third end of the first switch Q1, a second end of the first switch Q1 is electrically connected to one end of the second capacitor C2 and the MOTOR power VCC _ MOTOR, a first end of the first switch Q1 is electrically connected to the other end of the first resistor R1 and one end of the second resistor R2, a first end of the second switch Q2 is electrically connected to the other end of the second resistor R2, a third end of the second switch Q2 is electrically connected to one end of the third resistor R5962, a first end of the second resistor R2, and a third end of the fourth resistor R8653, and a fourth resistor POW _ MOTOR the resistor R8653, the other end of the first capacitor C1, the second end of the second switch Q2, the other end of the third resistor R3 and the other end of the ESD tube E1 are all grounded.

Optionally, the key scanning module includes a touch screen and a key identification module electrically connected in sequence.

Optionally, the fingerprint module includes a fingerprint collection module and a fingerprint identification module, and the fingerprint collection module is electrically connected with the fingerprint identification module.

Optionally, the face recognition module includes a camera and a face contour recognition module electrically connected in sequence.

Optionally, the MCU module is a single chip microcomputer.

Optionally, the motor control module is a dc motor.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the embodiment of the utility model provides an in MCU module control motor control module in-process of unblanking increases power control module to the break-make of control motor control module electric current improves the interference killing feature of system, guarantees not unblank because of Tesla, intercom interference is automatic, improves the security in the user's use.

(2) The embodiment of the utility model provides an in power control module jointly use the break-make of PMOS pipe and NPN triode control motor control module electric current, simple effective easy realization.

Drawings

Fig. 1 is a schematic diagram of a logic structure of an anti-interference intelligent lock according to an embodiment of the present invention;

fig. 2 is a flowchart of the unlocking execution of the anti-interference intelligent lock according to the embodiment of the present invention;

fig. 3 is a circuit diagram of a power control module of an anti-interference smart lock according to an embodiment of the present invention.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-3.

Example 1

With reference to fig. 1-3, the anti-interference intelligent lock of the present embodiment includes an MCU module, a motor control module, a power control module, a key scanning module, a fingerprint module, and a face recognition module electrically connected to the MCU module, respectively, the MCU module is electrically connected to the motor control module and the power control module, and the power control module is connected to the motor control module through a switch.

When the lock is unlocked, a user inputs a password, fingerprint verification or face recognition through the key scanning module, the fingerprint module or the face recognition module. If the MCU module receives an unlocking instruction of the key scanning module, the fingerprint module or the face recognition module, the MCU module can verify the correctness of the unlocking instruction, and can send a power supply instruction to the power supply control module after the unlocking instruction is verified successfully. The MCU module verifies that the unlocking instruction fails and does not send a power supply instruction to the power supply control module. And the power supply control module turns on a power supply switch after receiving the power supply instruction, and the motor control module is switched on. The MCU module sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to be unlocked after receiving the unlocking instruction. Before unlocking, the on-off of the current of the motor control module is controlled by the power supply control module, so that the interference of Tesla and interphone signals can be effectively prevented, and the safety of the intelligent lock is ensured.

An anti-interference method for an intelligent lock comprises the following steps:

step one, after receiving an unlocking instruction, an MCU module of the intelligent lock verifies the correctness of the unlocking instruction;

step two, if the verification is passed, a power supply instruction is sent to the power supply control module; if the verification is different, the method is ended

Thirdly, the power supply control module receives a power supply instruction to supply power to the motor control module;

step four, the MCU module sends an unlocking instruction to the motor control module;

and step five, after receiving the unlocking instruction, the motor control module controls the motor to drive the lock body to unlock.

The normal unlocking of the intelligent lock needs three links: inputting a password, authenticating the password and executing unlocking. Through a plurality of tests, the intelligent lock cracked by Tesla or an interphone does not pass through two links of inputting a password and authenticating the password, and the unlocking link can be interfered. A power supply control module is added in the unlocking intermediate process of an intelligent lock MCU (micro controller Unit) module control motor control module. So as to increase the anti-interference performance of the unlocking link. The power control module controls the on-off of the motor control module circuit. The MCU module sends a power supply instruction to the power control module before sending an unlocking instruction to the motor control module, the power control module opens a power supply switch after receiving the power supply instruction, the motor control module is switched on in a circuit mode, the MCU module sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to unlock after receiving the unlocking instruction. Through the power control module that increases motor control module, earlier open motor control module's power when carrying out the instruction of unblanking, make motor control module carry out the instruction of unblanking again, can improve the interference killing feature of system, guarantee not to unblank because of the interference of tesla, intercom signal automatically, improve the security of user in the use.

Example 2

With reference to fig. 1-3, in the anti-interference intelligent lock of this embodiment, compared with the technical solution of embodiment 1, the power control module includes a power source VIN, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch Q1, a second switch Q2, an ESD tube E1, a MOTOR power source VCC _ MOTOR, and a MOTOR power control end POW _ MOTOR, where the power source VIN is electrically connected to one end of the first capacitor C1, one end of the first resistor R1, and a third end of the first switch Q1, a second end of the first switch Q1 is electrically connected to one end of the second capacitor C2 and the MOTOR power source VCC _ MOTOR, a first end of the first switch Q1 is electrically connected to the other end of the first resistor R1 and one end of the second resistor R2, a first end of the second switch Q2 is electrically connected to the second end of the second resistor R2, and a third end of the second switch Q67 2 6 is electrically connected to the third end of the second resistor R67r 3, One end of an ESD tube E1 is electrically connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is electrically connected with a MOTOR power supply control end POW _ MOTOR, and the other end of the first capacitor C1, the second end of the second switch Q2, the other end of the third resistor R3 and the other end of the ESD tube E1 are all grounded.

The first capacitor C1 and the second capacitor C2 are energy storage capacitors, the first switch Q1 is a PMOS transistor, and the second switch Q2 is an NPN transistor. The first end of the first switch Q1 is a PMOS transistor G pole, and the third end of the first switch Q1 is a PMOS transistor S pole. The first terminal of the second switch Q2 is a collector, the second terminal of the second switch Q2 is an emitter, and the third terminal of the second switch Q2 is a base. The turn-on voltage of the first switch Q1 is Vth, which is a negative value, and when the difference Vg-Vs between the G voltage and the S voltage of the PMOS transistor is less than or equal to Vth, the first switch Q1 is turned on. Normally, the power control terminal POW _ MOTOR of the MOTOR is kept at a low level, and at this time, the triode operates in the cut-off region, the collector current of the triode is 0, the emitter and the collector act like an open switch, and the second switch Q2 is not conducted. At this time, the G voltage of the PMOS transistor is equal to the voltage of the power supply VIN, the S voltage of the PMOS transistor is equal to the voltage of the power supply VIN, Vg-Vs is 0 > Vth, and the first switch Q1 is not turned on. When an unlocking instruction exists, the MCU module controls the power supply control end POW _ MOTOR of the MOTOR to be changed into high level output, the triode works in a saturation region, and the second switch Q2 is conducted. At this time, the voltage of the G electrode of the PMOS tube is the voltage division value of the first resistor R1 and the second resistor R2 on the power supply VIN, the voltage of the S electrode of the PMOS tube is the voltage of the power supply VIN, Vg-Vs is less than or equal to Vth, the Vth starting voltage is met, and the first switch Q1 is switched on. Power VIN may normally provide power to MOTOR power VCC _ MOTOR. Then the MCU module can send the instruction of unblanking for motor control module, and motor control module receives the instruction of unblanking and drives the lock body and unblank.

Example 3

With reference to fig. 1-3, compared with the technical solutions of embodiments 1 and 2, the anti-interference intelligent lock of this embodiment includes a touch screen and a key identification module that are electrically connected in sequence. The key identification module is an RC control circuit and a password identification module which are electrically connected, and the key scanning module utilizes the capacitance voltage change of the RC control circuit to sense the touch action to identify the password. The RC (Resistor capacitor circuit) control circuit is connected with the touch screen, when a human hand approaches the touch screen, a capacitor is formed between the RC control circuit and an electrode plate below the touch screen, and touch action is induced by detecting the change of the capacitor. The password identification module compares the password input through the touch screen and the RC control circuit with the correct password stored in the database, and if the password comparison is successful, the password identification module sends an unlocking instruction to the MCU module, and the MCU module receives the unlocking instruction. And the MCU module can send a power supply instruction to the power supply control module after verifying that the unlocking instruction is successful. The MCU module verifies that the unlocking instruction fails and does not send a power supply instruction to the power supply control module. And the power supply control module turns on a power supply switch after receiving the power supply instruction, and the motor control module is switched on. The MCU module sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to be unlocked after receiving the unlocking instruction. The unlocking is carried out by using a key password input mode, and the method is simple, safe and reliable.

Example 4

With reference to fig. 1-3, compared with any one of the technical solutions of embodiments 1-3, the anti-interference intelligent lock of this embodiment includes a fingerprint acquisition module and a fingerprint identification module, where the fingerprint acquisition module is electrically connected to the fingerprint identification module. The fingerprint collecting module collects fingerprints by utilizing the refraction and reflection principles of light. The light is emitted to the fingerprint through the prism, the refraction angle on the uneven lines of the fingerprint and the reflected light are different in brightness and darkness, and therefore the optical device collects picture information with different brightness and darkness degrees to finish fingerprint collection. Fingerprint that fingerprint identification module analysis fingerprint collection module gathered draws the characteristic to it, separates specific characteristic point and replaces different fingerprint lines, then compares one by one with the fingerprint characteristic of preserving in fingerprint identification module's the database of fingerprint characteristic of gathering, judges whether belong to same fingerprint, if the fingerprint comparison is successful, fingerprint identification module sends the instruction of unblanking to the MCU module, and the MCU module is received the instruction of unblanking. And the MCU module can send a power supply instruction to the power supply control module after verifying that the unlocking instruction is successful. The MCU module verifies that the unlocking instruction fails and does not send a power supply instruction to the power supply control module. And the power supply control module turns on a power supply switch after receiving the power supply instruction, and the motor control module is switched on. The MCU module sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to be unlocked after receiving the unlocking instruction. The fingerprint input mode is utilized to unlock, and the lock is simple, safe and reliable.

Example 5

With reference to fig. 1-3, compared with any one of the technical solutions of embodiments 1-4, the anti-interference intelligent lock of this embodiment includes a camera and a face contour recognition module that are electrically connected in sequence. The camera collects images of human faces, and the human face recognition module recognizes the images by using a human face contour recognition algorithm built in the human face contour recognition module. Firstly, graying a face image acquired by a camera by a face contour recognition algorithm; secondly, the image is converted into a simple outline expression form by analyzing the brightness of the image, and a certain number of measured values are generated through the outline expression form; finally, the measured values are compared with the measured values stored in the database, if the measured values are similar to each other, the face recognition module sends an unlocking instruction to the MCU module, and the MCU module receives the unlocking instruction. And the MCU module can send a power supply instruction to the power supply control module after verifying that the unlocking instruction is successful. The MCU module verifies that the unlocking instruction fails and does not send a power supply instruction to the power supply control module. And the power supply control module turns on a power supply switch after receiving the power supply instruction, and the motor control module is switched on. The MCU module sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to be unlocked after receiving the unlocking instruction. The face recognition is used for unlocking, and the unlocking method is simple, safe and reliable.

Example 6

With reference to fig. 1-3, compared with any one of the technical solutions of embodiments 1-5, the anti-interference intelligent lock of this embodiment has a MCU module as a single chip. The singlechip comprises a central processing unit, a read-only memory and a random access memory. The read-only memory of the singlechip is provided with a preset correct unlocking instruction code. Before unlocking, the key scanning module, the fingerprint module or the face recognition module sends an unlocking instruction to the single chip microcomputer. The random access memory of the single chip receives the transmitted unlocking instruction, the random access memory transmits the received unlocking instruction to the central processing unit, the central processing unit receives the unlocking instruction, reads a preset correct unlocking instruction code, compares the correct unlocking instruction code with the temporarily received unlocking instruction, and if the central processing unit verifies that the received unlocking instruction is correct, the central processing unit sends a power supply instruction to the power supply control module. And the power supply control module turns on a power supply switch after receiving the power supply instruction, and the motor control module is switched on. The central processing unit sends an unlocking instruction to the motor control module, and the motor control module drives the lock body to be unlocked after receiving the unlocking instruction.

Example 7

With reference to fig. 1 to 3, compared with any one of the technical solutions of embodiments 1 to 6, the anti-interference intelligent lock of the present embodiment includes a motor control module that is a dc motor. The direct current motor is an open-loop control motor which converts a level signal into angular displacement or linear displacement, the main control module drives the direct current motor to rotate for a fixed angle according to a set direction, and the direct current motor drives the intelligent lock unlocking component to unlock, so that the aim of accurately unlocking is fulfilled.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an anti-interference intelligent lock, its characterized in that includes MCU module, motor control module and power control module, still includes button scanning module, fingerprint module and the face identification module of being connected with the MCU module electricity respectively, the MCU module is connected with motor control module and power control module electricity respectively, be connected through on-off control between power control module and the motor control module.

2. The anti-jamming intelligent lock according to claim 1, wherein the power control module includes a power source VIN, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch Q1, a second switch Q2, an ESD tube E1, a MOTOR power VCC _ MOTOR, and a MOTOR power control terminal POW _ MOTOR, the power source VIN is electrically connected to one end of the first capacitor C1, one end of the first resistor R1, and a third end of the first switch Q1, the second end of the first switch Q1 is electrically connected to one end of the second capacitor C2 and one end of the MOTOR power VCC _ MOTOR, the first end of the first switch Q1 is electrically connected to the other end of the first resistor R1 and one end of the second resistor R2, the first end of the second switch Q2 is electrically connected to the other end of the second resistor R2, and the third end of the second switch Q3 is electrically connected to the third terminal R3, One end of an ESD tube E1 is electrically connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is electrically connected with a MOTOR power supply control end POW _ MOTOR, and the other end of the first capacitor C1, the second end of the second switch Q2, the other end of the third resistor R3 and the other end of the ESD tube E1 are all grounded.

3. The anti-jamming smart lock according to claim 1, wherein the key scanning module includes a touch screen and a key identification module electrically connected in sequence.

4. The anti-jamming smart lock according to claim 1, wherein the fingerprint module includes a fingerprint acquisition module and a fingerprint identification module, and the fingerprint acquisition module is electrically connected with the fingerprint identification module.

5. The anti-jamming smart lock according to claim 1, wherein the face recognition module comprises a camera and a face contour recognition module which are electrically connected in sequence.

6. The anti-jamming smart lock of claim 1, wherein the MCU module is a single chip microcomputer.

7. The tamper-resistant smart lock of claim 1, wherein the motor control module is a dc motor.