CN210768201U

CN210768201U - Fingerprint identification electronic coded lock

Info

Publication number: CN210768201U
Application number: CN201920314059.6U
Authority: CN
Inventors: 周先春; 范梦佳; 闵龙
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Nanjing Huasheyun Information Technology Co ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-06-16
Anticipated expiration: 2029-03-13

Abstract

An electronic coded lock with fingerprint identification function. The utility model belongs to security protection environmental protection field, including the electron trick lock body the core control module has been installed to the inside of electron trick lock body be connected with fingerprint identification module, display module, switch lock, storage module and button on the core control module respectively. The utility model provides a fingerprint identification electronic trick lock to a great extent has reduced the latent nature of potential safety hazard, and the representative that becomes the new generation lock in time, very big improvement security protection system, practical value is high, use extensively, the function is stable, low cost.

Description

Fingerprint identification electronic coded lock

Technical Field

The utility model belongs to security protection environmental protection field especially relates to a fingerprint identification electronic trick lock.

Background

In the modern high-speed networking mode, although passwords are widely quoted to serve as signs for identity identification, people forget the passwords quickly and are likely to be stolen, the requirements on intellectualization and safety performance cannot be met, and various keys similar to the passwords have obvious defects. When the traditional safety anti-theft system is in a embarrassing stage, the biological identification technology calls out an eosin light, and the biological characteristic contrast password and the key have the characteristics of uniqueness and uncopyability. In the prior security system, after a mechanical lock, a coded lock and an induction lock, the fingerprint lock is changed into a typical representative of a new generation of door lock. The fingerprint lock replaces a key or a password, so that the potential of potential safety hazards is reduced to a great extent, the most important reason is the inherent physiological characteristics of the fingerprint, and the problems of loss, theft and plagiarism are solved within a fixed length of historical time, so that the conclusion that the fingerprint lock is almost satisfactory and the problem of the traditional door lock persistence is solved. The fingerprint lock faces an excellent historical opportunity, and a security system can be improved.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a fingerprint identification electron trick lock, improvement security protection system that can be very big.

The technical scheme of the utility model is that: a fingerprint identification electronic coded lock comprises an electronic coded lock body, wherein a core control module is arranged in the electronic coded lock body, and is respectively connected with a fingerprint identification module, a display module, a switch lock, a storage module and a key.

The fingerprint identification module comprises eight pins, and the eight pins comprise a module power supply positive input end, a serial data output end, a serial data input end, a signal connection end, an induction signal output end, a touch induction power supply input end and a USB interface.

The display module adopts an LCD.

A singlechip for controlling the action of the switch lock is arranged in the electronic coded lock body, and a relay is arranged between the singlechip and the switch lock; the switch lock is powered by an external power supply, and the singlechip controls the action of the switch lock by controlling the relay.

The utility model discloses a STM32 is as main control chip, and the LCD screen is as display module, and fingerprint identification module is used for detecting the fingerprint, and the memory is used for saving initial password and initial fingerprint, represents the result of fingerprint image matching with the switch lock.

Furthermore, the core control module adopts STM32 as a main control chip;

further, the fingerprint identification module selects to use an ATK-AS608 fingerprint identification module;

furthermore, the display module adopts an LCD (liquid crystal display) screen as the display module;

furthermore, the electronic lock KL-03 is adopted for representing a fingerprint image matching result in the locking and unlocking process;

further, the memory uses an external SRAM memory.

The utility model has the advantages that: the utility model provides a fingerprint identification electronic trick lock to a great extent has reduced the latent nature of potential safety hazard, and the representative that becomes the new generation lock in time, very big improvement security protection system, practical value is high, use extensively, the function is stable, low cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A fingerprint identification electronic coded lock comprises an electronic coded lock body, wherein a core control module is arranged in the electronic coded lock body, and is respectively connected with a fingerprint identification module, a display module, a switch lock, a storage module and a key.

The display module adopts an LCD.

A single chip microcomputer for controlling the action of the electronic lock is arranged in the electronic coded lock body, and a relay is arranged between the single chip microcomputer and the electronic lock; the electronic lock is powered by an external power supply, and the single chip microcomputer controls the electronic lock to act by controlling the relay.

The core control module adopted in the utility model adopts STM32 as the main control chip; the external whole circuit is supplied by a 3.3V voltage source, and the voltage is raised to 5V through the boosting template, and the external whole circuit comprises a crystal oscillator circuit and a clock circuit. After the STM32 is powered on and reset, the crystal oscillator with the precision of about 8MHz is used by default, the crystal oscillator is easy to start oscillation by connecting a 1M resistor in parallel, and the oscillation starting capacitors of 2 22PF connected in series are grounded again.

The fingerprint identification module selects to use an ATK-AS608 fingerprint identification module; fingerprint identification module includes eight pins, eight pins include module power positive input, serial data output, serial data input, signal connection end, response signal output, touch-sensitive power input and USB interface, and fingerprint identification module is via serial communication interface, and stm32 of 3.3V power can the direct communication: the module data transmitting pin (2 pin TX) is connected with a data receiving end (RX) of the upper computer, and the module data receiving pin (3 pin RX) is connected with a data transmitting end (TX) of the upper computer.

The display module adopts an LCD (liquid crystal display) screen as the display module; the fingerprint matching result is displayed by using a 3.3V LCD, and the I/O port output display is programmed and operated by using STM 32.

The electronic lock KL-03 is adopted for representing a fingerprint image matching result in the locking and unlocking process; the rated voltage of the electronic lock KL-03 during operation is 12V, and the rated current is 1A.

The memory uses an external SRAM memory, and the main controller receives an interrupt when a finger is pressed on the sensor

The signals are then used for collecting fingerprints, information of synchronous serial port communication between the main controller and the fingerprint module is collected in the process, and the data are stored in an external SRAM memory in an array matrix mode.

The utility model discloses a work process flow as follows: when the system starts to operate, the core control module, the display module and the storage module are initialized firstly, when the key is detected to be pressed down, the core control module controls the fingerprint module to collect, input, store and compare fingerprints through serial port communication, the collected synchronous serial port communication information of the main controller and the fingerprint module is stored in an external memory, the result and the operation process are displayed in real time through the display module, and the result of fingerprint image matching is represented by an on-off lock.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

The utility model provides a fingerprint identification electronic trick lock to a great extent has reduced the latent nature of potential safety hazard, and the representative that becomes the new generation lock in time, very big improvement security protection system, practical value is high, use extensively, the function is stable, low cost.

Claims

1. A fingerprint identification electronic coded lock is characterized by comprising an electronic coded lock body, wherein a core control module is arranged in the electronic coded lock body, and the core control module is respectively connected with a fingerprint identification module, a display module, a switch lock, a storage module and a key;

the fingerprint identification module comprises eight pins, wherein the eight pins comprise a module power supply positive input end, a serial data output end, a serial data input end, a signal connecting end, an induction signal output end, a touch induction power supply input end and a USB interface;

the display module adopts an LCD;

a singlechip for controlling the action of the switch lock is arranged in the electronic coded lock body, and a relay is arranged between the singlechip and the switch lock; the switch lock is powered by an external power supply, and the singlechip controls the action of the switch lock by controlling the relay;

the fingerprint identification electronic coded lock adopts a core control module and STM32 as a main control chip; the external whole circuit is supplied by a 3.3V voltage source, and the voltage is raised to 5V through a boosting template, and the external whole circuit comprises a crystal oscillator circuit and a clock circuit; after the STM32 is electrified and reset, a crystal oscillator with the precision of about 8MHz is used by default, a 1M resistor is connected in parallel to enable the crystal oscillator to start oscillation easily, and 2 oscillation starting capacitors with the frequency of 22PF are connected in series and then grounded;

the fingerprint identification module selects to use an ATK-AS608 fingerprint identification module; fingerprint identification module includes eight pins, eight pins include module power positive input, serial data output, serial data input, signal connection end, response signal output, touch-sensitive power input and USB interface, and fingerprint identification module is via serial communication interface, and stm32 of 3.3V power can the direct communication: the module data sending pin is connected with a data receiving end of the upper computer, and the module data receiving pin is connected with a data sending end of the upper computer;

the display module adopts an LCD (liquid crystal display) screen as the display module; displaying the fingerprint matching result by adopting a 3.3V LCD, and programming and operating an I/O port by using STM32 to output and display;

the electronic lock KL-03 is adopted for representing a fingerprint image matching result in the locking and unlocking process; the rated voltage of the electronic lock KL-03 in work is 12V, and the rated current is 1A;

the memory uses an external SRAM memory, when a finger presses on the sensor, the main controller receives an interrupt signal and collects the fingerprint, and in the process, the information of synchronous serial port communication between the main controller and the fingerprint module is collected, and the data is stored in the external SRAM memory in an array matrix mode.