CN106548540A - A kind of NFC intelligent door locks - Google Patents
A kind of NFC intelligent door locks Download PDFInfo
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- CN106548540A CN106548540A CN201510621297.8A CN201510621297A CN106548540A CN 106548540 A CN106548540 A CN 106548540A CN 201510621297 A CN201510621297 A CN 201510621297A CN 106548540 A CN106548540 A CN 106548540A
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- nfc
- motor drive
- central processing
- processing module
- card information
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Abstract
The invention discloses a kind of NFC intelligent door locks, connect including mechanical door lock, central processing module, the NFC recognition module for obtaining IC card information, the motor drive ic of motor and the motor drive ic, motor and battery that driving mechanical door lock is unlocked.The central processing module is used for the first IC card information for receiving NFC recognition module acquisition, and compares with the second IC card information for prestoring；And when first IC card information is matched with the second IC card information, output motor drive signal is to the motor drive ic；The motor drive ic is received and amplifies the motor drive signal and rotates so as to motor；The NFC recognition module is also included for detecting that the low-power consumption MCU of antenna magnetic field change, the low-power consumption MCU produce corresponding working signal according to the situation of change in NFC antenna magnetic field and read so as to the interrupt for realizing NFC recognition module.
Description
Technical field
The present invention relates to door lock technical field, more particularly to a kind of NFC intelligent door locks.
Background technology
NFC technology is a kind of novel non-contact wireless telecommunications by RFID development evolvements
Technology.By the combining induction card reader on one chip, icah wavw and point-to-point function, energy
Realization is identified the function with data exchange with compatible equipment in short distance.
Among this technology is widely used in the different field such as gate control system, mobile payment.But in door
In taboo or door lock field, the NFC device being arranged on door lock is initiating equipment, is entirely being communicated by which
Radiofrequency field is provided in journey.Therefore, in the daily use of door lock or gate inhibition, above-mentioned NFC device needs to hold
Continuous is close to have detected whether NFC target devices to emission radiofrequency signal.
The continual active reading manner of above-mentioned NFC device so that NFC device power consumption in use
It is very high.Typically it is required to be powered using the mode of door lock internal battery using externally fed.
And when adopting externally fed, need the wiring problem in view of connection power line so that corresponding NFC door locks/
The installation of gate inhibition is complex, while also needing to the problem (circumscripted power line of the stability of consideration externally fed
Rely on extraneous power supply) so that there is certain difficulty in the popularization and application of NFC door locks/gate inhibition.
Therefore, prior art is also to be developed.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of NFC intelligent door locks,
In aiming to solve the problem that prior art, NFC door lock NFC main equipment power consumptions are larger, it is impossible to realize independently-powered, needs
The problem of extra wiring.
In order to achieve the above object, this invention takes technical scheme below：
A kind of NFC intelligent door locks, including mechanical door lock, wherein, the NFC intelligent door locks also include central authorities
Processing module, the NFC recognition module for obtaining IC card information, the motor drive ic of motor,
It is connected with the motor drive ic, motor and battery that driving mechanical door lock is unlocked；
The central processing module is connected with the NFC recognition module, motor drive ic respectively；
The central processing module be used for receive NFC recognition module acquisition the first IC card information, and with it is pre-
The second IC card information for first storing is compared；
And when first IC card information is matched with the second IC card information, output motor drive signal
To the motor drive ic；The motor drive ic is received and amplifies the motor drive signal so as to drive
Dynamic motor rotation；
The NFC recognition module also include for detect antenna magnetic field change low-power consumption MCU, the low work(
Consumption MCU produces corresponding working signal so as to realize NFC identification moulds according to the situation of change in NFC antenna magnetic field
The interrupt of block reads.
Described NFC intelligent door locks, wherein, the NFC intelligent door locks also include that obtaining user knocks at the door pattern
Vibration switch module and send the buzzer of prompt tone；
The CPU module is connected with the vibration switch module, is received the vibration switch module and is obtained
The first user for taking is knocked at the door pattern, and compares with the second user pattern of knocking at the door for prestoring；
And the first user knock at the door pattern match with the second user pattern of knocking at the door when, output motor drive
To the motor drive ic, the motor drive ic is received and amplifies the motor drive signal dynamic signal
So as to motor rotates.
Described NFC intelligent door locks, wherein, the motor drive ic is specifically included：Amplify the motor
Drive signal, the full-bridge circuit of motor.
Described NFC intelligent door locks, wherein, the NFC intelligent door locks also include storage information delete button；
The storage information delete button is connected with central processing module, is instructed for receive user, is deleted in central authorities
The second IC card information that processing module is prestored.
Described NFC intelligent door locks, wherein, the NFC intelligent door locks also include that IC card information addition is pressed
Key；The IC card information addition button is connected with central processing module, is instructed for receive user, in
Centre processing module prestores IC card information as second IC card information.
Described NFC intelligent door locks, wherein, the NFC intelligent door locks also include vibrations password addition button,
The vibrations password addition button is connected with central processing module, is instructed for receive user, in central authorities' process
Module prestores user's pattern of knocking at the door and knocks at the door pattern as the second user.
Described NFC intelligent door locks, wherein, the NFC intelligent door locks are also included for detecting cell voltage
Electric quantity detecting circuit；
The electric quantity detecting circuit is connected with the central processing module, is less than predetermined threshold value in cell voltage
When, alarm signal is sent to central processing module；
The central processing module controls the buzzer after receiving the alarm signal and sends predetermined warning
Mode annunciations user battery electric quantity is not enough.
Beneficial effect：A kind of NFC intelligent door locks that the present invention is provided, by arranging in NFC recognition module
Extra low-power consumption MCU, realizes the low-power consumption standby of NFC recognition module, so as to effectively reduce NFC
Intelligent door lock power consumption in use.Due to the characteristics of above-mentioned lower power consumption so that of the present invention
NFC intelligent door locks can carry out independently-powered mode using internal battery, need not consider the wiring of power line
Problem, can greatly convenient door lock assembling and improve the stability that uses of door lock.
Description of the drawings
Functional block diagrams of the Fig. 1 for the NFC intelligent door locks of the specific embodiment of the invention.
Specific embodiment
The present invention provides a kind of NFC intelligent door locks.To make the purpose of the present invention, technical scheme and effect more
Clear, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that
Specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
As shown in figure 1, being a kind of NFC intelligent door locks of the present invention.Wherein described NFC intelligent door locks
Including：Mechanical door lock part (that is, basic mechanical structure portion of door lock) and electronic section.
Wherein, electronic section includes：Central processing module 100, NFC recognition module 200, motor
Motor drive ic 300, and the motor drive ic connection, driving mechanical door lock unlock motor 400
And battery 500.The central processing module 100 is driven with the NFC recognition module 200, motor respectively
Dynamic chip 300 connects.
In use, NFC recognition module 200 obtains IC card information, and is transmitted to the central authorities
In processing module 100.The central processing module 100 receives the IC card information that NFC recognition module is obtained,
As the first IC card information, and which is compared with the second IC card information for prestoring.(that is, IC
The verification process of card)
When first IC card information is matched with the second IC card information, central processing module 100 is exported
Motor drive signal receives the motor drive to the motor drive ic 300 and by motor drive ic 300
Dynamic signal motor 400 rotates accordingly, with the rotation of motor 400, drives the NFC door locks
Mechanical door lock part unlock.Specifically, the motor drive ic specifically includes the amplification Motor drive
Signal, the full-bridge circuit (H-bridge circuit) of motor.
It should be noted that the IC-card refers to that the NFC target corresponding with NFC recognition module 200 sets
It is standby, can be specifically conventional IC-card, or any smart mobile phone with NFC function, wrist-watch
Etc..
More preferably, can also be using NFC label as IC-card.If during using NFC label, Ke Yifang
Being pasted on the article for using with oneself even clothing just so that the operation of enabling is more convenient,
Heavy key need not be carried.By the way, you can realize the function that NFC checkings are unlocked.
To reduce the power consumption of the NFC door locks, it is provided with the NFC recognition module 200 for detecting day
The low-power consumption MCU of line changes of magnetic field.Low-power consumption MCU produces phase according to the situation of change in NFC antenna magnetic field
The working signal answered is read so as to the interrupt for realizing NFC recognition module 200.
" interrupt reading " mode is specifically referred to only when NFC target devices (IC-card) are near module
When, just start Card Reader work, and produce an interruption to central processing module.Central processing module starts
IC card information is received by iic bus.This mode greatly reduces the power consumption of NFC, so that system
Working time it is longer no NFC target devices near when,
Above-mentioned interrupt reading manner is persistently sent out radiofrequency signal with existing NFC main equipments
The no continous way reading manner for having NFC target devices close is compared, and the power consumption of NFC main equipments can obtain pole
Big reduction, under specific electricity can maintain the longer working time, to have a good application prospect.
The low-power consumption MCU specifically can be using any suitable in prior art, the MCU with corresponding function.
The principle that implements that above-mentioned interrupt reads is：When having IC-card near PCB printed antenna (NFC
Antenna) when, the magnetic field of antenna part changes, and causes low-power consumption MCU to produce working signal, low-power consumption
It is working condition that MCU controls NFC chip in NFC recognition module so as to obtain IC card information, and by its
It is stored in MCU.
Then, low-power consumption MCU produces interruption to system MCU (that is, central processing module part), and will
System MCU is asked to pass through within the 0.5s times (time specifically can make adjustment according to actual conditions)
Iic bus read and have stored and the IC card information in module MCU.
And work as after IC-card leaves detection zone, MCU can't detect IC-card in detection zone, MCU storages
IC card information is automatically deleted, and NFC chip reenters closed mode and waits IC-card next time to print near PCB
Antenna processed is with rearming.
When no IC-card is near PCB printed antennas, MCU controls NFC chip for closed mode.Now
The NFC recognition module is in holding state, and power consumption is in 25uA or so, therefore can be considered as substantially zero power
Consumption.
Specifically, the NFC intelligent door locks can also include that IC card information adds button 20.Described information
Addition button 20 is connected with central processing module, is instructed for receive user.When user presses the addition
After button 20, central processing module enters memory module, the IC-card letter that now NFC recognition module is obtained
Breath storage, as second IC card information.
Specifically used method can be：First IC-card to be added is pressed close to the antenna of " NFC recognition module "
Part, presses the button after one second, buzzer has a sound of " drop " and successfully points out.
When if IC-card addition quantity has reached higher limit (such as 7), then when pressing the button,
The built-in buzzer of NFC intelligent door locks sends the continuous warning prompt of two sound of " drop, drop ".
In a preferred embodiment of the present invention, as shown in figure 1, the NFC intelligent door locks also include obtaining
User knock at the door pattern vibration switch module 600 and send the buzzer 10 of prompt tone.
The vibration switch module 600 is used for the pattern of knocking at the door for obtaining user, that is, striking in special time
Door number of times.The vibration switch module 600 can specifically pass through existing any suitable shock sensor and meter
When circuit completing the acquisition function of above-mentioned pattern of knocking at the door.
The CPU module is connected with the vibration switch module 600, reads the vibration switch mould
The first user that block is obtained is knocked at the door pattern, and compares with the second user pattern of knocking at the door for prestoring.
The first user knock at the door pattern match with the second user pattern of knocking at the door when, output motor drive letter
Number to the motor drive ic.The motor drive ic receive and amplify the motor drive signal so as to
Motor rotation is so as to realizing the unlocking function of door lock.
By arranging above-mentioned vibration switch module 600, using the teaching of the invention it is possible to provide a kind of door lock opening ways of standby, lead to
Cross input with pre-stored patterns identical knock at the door pattern i.e. be capable of achieving door lock open.Leaving behind corresponding NFC
During target device, it is possible to use above-mentioned standby door lock opening ways are unlocked, and convenient user's makes
With while can also improve the reliability that door lock is used.
More specifically, the NFC intelligent door locks can also be including a vibrations password addition button 700.It is described
Vibrations password addition button 700 is connected with central processing module.After user presses addition button 700,
Central processing module gets corresponding user instruction, and into memory module, the user for storing now knocks at the door mould
Formula is knocked at the door pattern as the second user, so as to complete the addition of the vibrations password.
It is described by the specifically used mode of vibration switch opening door lock to be：
Sense the number of times for tapping door lock as a password value vibration switch module 600 in ten seconds.
In the input cycle of one password position (such as 10s), vibration switch often senses a buzzer meeting of knocking at the door
There is a sound announcement information of " drop ".After a certain input cycle time-out, (after 10s) has buzzer and notifies to work as
The password digit of front input.Vibrations password (that is, pattern of knocking at the door) could be arranged to four.Certainly
More or less password positions can be set.
It is preferred that the NFC intelligent door locks can also include storage information delete button 800.It is described to deposit
Storage information deletion button 800 is connected with central processing module.After user presses delete button 800, central authorities
Processing module deletes the second IC card information and/or vibrations password for emptying storage.
In the preferred embodiment, the NFC intelligent door locks can also be included for detecting battery electricity
The electric quantity detecting circuit 900 of pressure.The electric quantity detecting circuit 900 is connected with the central processing module,
When cell voltage is less than predetermined threshold value, alarm signal is sent to central processing module.The threshold value can be according to
Determined that for example, operating voltage is 3.7V according to the specifically used battery of the NFC door locks and actual conditions
Lithium ion battery, threshold value can be set for 3.2-3.0V.
The central processing module controls the buzzer 10 after receiving the alarm signal and sends predetermined report
Alert mode annunciations user battery electric quantity is not enough.The electric quantity detecting circuit can specifically use existing any commonly employed
Voltage sample circuit and other logic judging circuits realizing above-mentioned voltage detecting warning function.
It is understood that for those of ordinary skills, can be with technology according to the present invention scheme
And present inventive concept in addition equivalent or change, and all these changes or replace and should all belong to institute of the present invention
Attached scope of the claims.
Claims (7)
1. a kind of NFC intelligent door locks, including mechanical door lock, it is characterised in that the NFC intelligent door locks
Also include central processing module, the NFC recognition module for obtaining IC card information, the motor of motor
Driving chip and motor drive ic connection, motor and battery that driving mechanical door lock is unlocked；
The central processing module is connected with the NFC recognition module, motor drive ic respectively；
The central processing module be used for receive NFC recognition module acquisition the first IC card information, and with it is pre-
The second IC card information for first storing is compared；
And when first IC card information is matched with the second IC card information, output motor drive signal
To the motor drive ic；The motor drive ic is received and amplifies the motor drive signal so as to drive
Dynamic motor rotation；
The NFC recognition module also include for detect antenna magnetic field change low-power consumption MCU, the low work(
Consumption MCU produces corresponding working signal so as to realize NFC identification moulds according to the situation of change in NFC antenna magnetic field
The interrupt of block reads.
2. NFC intelligent door locks according to claim 1, it is characterised in that the NFC intelligent doors
Lock also include obtaining user knock at the door pattern vibration switch module and send the buzzer of prompt tone；
The CPU module is connected with the vibration switch module, is received the vibration switch module and is obtained
The first user for taking is knocked at the door pattern, and compares with the second user pattern of knocking at the door for prestoring；
And the first user knock at the door pattern match with the second user pattern of knocking at the door when, output motor drive
To the motor drive ic, the motor drive ic is received and amplifies the motor drive signal dynamic signal
So as to motor rotates.
3. NFC intelligent door locks according to claim 1, it is characterised in that the Motor drive core
Piece is specifically included：Amplify the motor drive signal, the full-bridge circuit of motor.
4. NFC intelligent door locks according to claim 1, it is characterised in that the NFC intelligent doors
Lock also includes storage information delete button；The storage information delete button is connected with central processing module, is used
Instruct in receive user, delete the second IC card information prestored in central processing module.
5. NFC intelligent door locks according to claim 1, it is characterised in that the NFC intelligent doors
Lock also includes that IC card information adds button；The IC card information addition button is connected with central processing module,
Instruct for receive user, IC card information is prestored in central processing module and believed as second IC-card
Breath.
6. NFC intelligent door locks according to claim 2, it is characterised in that the NFC intelligent doors
Lock also includes vibrations password addition button, and the vibrations password addition button is connected with central processing module, is used
Instruct in receive user, user's pattern of knocking at the door is prestored in central processing module and struck as the second user
Door model.
7. NFC intelligent door locks according to claim 2, it is characterised in that the NFC intelligent doors
Lock is also included for detecting the electric quantity detecting circuit of cell voltage；
The electric quantity detecting circuit is connected with the central processing module, is less than predetermined threshold value in cell voltage
When, alarm signal is sent to central processing module；
The central processing module controls the buzzer after receiving the alarm signal and sends predetermined warning
Mode annunciations user battery electric quantity is not enough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621297.8A CN106548540A (en) | 2015-09-23 | 2015-09-23 | A kind of NFC intelligent door locks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621297.8A CN106548540A (en) | 2015-09-23 | 2015-09-23 | A kind of NFC intelligent door locks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106548540A true CN106548540A (en) | 2017-03-29 |
Family
ID=58364663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621297.8A Pending CN106548540A (en) | 2015-09-23 | 2015-09-23 | A kind of NFC intelligent door locks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717741A (en) * | 2018-07-09 | 2018-10-30 | 深圳市长龙鑫电子有限公司 | A kind of intelligent industrial electronic lock system |
| CN109697768A (en) * | 2017-10-20 | 2019-04-30 | 南京启纬智芯微电子有限公司 | Intelligent lock circuit and smart lock |
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| CN203950362U (en) * | 2014-04-02 | 2014-11-19 | 深圳市方卡科技股份有限公司 | A kind of electronic lock and electronic lock system based on NFC |
| CN104167029A (en) * | 2013-05-20 | 2014-11-26 | 陈罡 | Intelligent lock and operation method thereof |
| CN104778768A (en) * | 2015-04-02 | 2015-07-15 | 苏州大学 | NFC mobile phone electronic lock access control device system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963016A (en) * | 2010-10-09 | 2011-02-02 | 西安信唯信息科技有限公司 | Electronic code lock with good safety |
| CN104167029A (en) * | 2013-05-20 | 2014-11-26 | 陈罡 | Intelligent lock and operation method thereof |
| CN203950362U (en) * | 2014-04-02 | 2014-11-19 | 深圳市方卡科技股份有限公司 | A kind of electronic lock and electronic lock system based on NFC |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109697768A (en) * | 2017-10-20 | 2019-04-30 | 南京启纬智芯微电子有限公司 | Intelligent lock circuit and smart lock |
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Application publication date: 20170329 |