CN107895416A - Intelligent fingerprint cipher anti theft lock system - Google Patents
Intelligent fingerprint cipher anti theft lock system Download PDFInfo
- Publication number
- CN107895416A CN107895416A CN201711158389.2A CN201711158389A CN107895416A CN 107895416 A CN107895416 A CN 107895416A CN 201711158389 A CN201711158389 A CN 201711158389A CN 107895416 A CN107895416 A CN 107895416A
- Authority
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- China
- Prior art keywords
- intelligent
- electric lockset
- fingerprint
- lock system
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
- E05B45/061—Electric alarm locks for combination locks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Lock And Its Accessories (AREA)
Abstract
The present invention proposes a kind of intelligent fingerprint cipher anti theft lock system, intelligent monitor and electric lockset including interconnection, the intelligent monitor, which supplies the electric energy needed for the electric lockset and receives electric lockset, sends live state information, the intelligent monitor includes single-chip microcomputer, keyboard, LCD display, memory, demodulator, path monitoring module, analog-digital converter and buzzer, the safety monitoring for the communication between completion and electric lockset, intelligent analysis and communication line；The electric lockset includes lock body and the electromagnetic actuator for controlling lock body opening and closing, and at least provided with fingerprint identification module, Password Input module and OLED LCD MODULEs in the lock body, the fingerprint identification module is semiconductor module.The present invention is simple in construction, powerful, practical, improves the level of security of theftproof lock, should be widely promoted application.
Description
Technical field
The present invention relates to a kind of intelligent fingerprint cipher anti theft lock system, belong to intelligent anti-theft lock field.
Background technology
In field of prevention of a safety technology, the electronic password lock with anti-theft alarm function replaces traditional mechanical code
Lock, the shortcomings that overcoming few mechanical code lock number of password, poor safety performance, no matter make coded lock technically or in performance
On all greatly improve a step.With the appearance of the development of large scale integrated circuit technology, particularly single-chip microcomputer, occur with micro- place
The intelligent cipher lock of device is managed, it also introduces intelligent management, expert analyzing system etc. in addition to the function with electronic password lock
Function, so that coded lock is increasingly extensive with very high security, reliability, application.
In existing lockset industry, digital cipher lock is a kind of relatively common lock, is widely used in each of society
Field, open digital cipher lock when be a series of numeral.Existing intelligent digital coded lock is all the peace to itself
Entirely, confidentiality is improved, but when generation stranger attempts to open the situation of lock, it is impossible to timely understand, it is impossible to real
When grasp digital cipher lock state, take action in time.Therefore a real-time, effectively anti-theft lock system is lacked.
The content of the invention
The technical problems to be solved by the invention, exactly propose a kind of intelligent fingerprint cipher anti theft lock system, the theftproof lock
System can in real time, effectively monitor the state of coded lock, take action in time, avoid causing the damage of property because lock is opened
Lose.
In order to solve the above technical problems, the technology of the present invention uses following technical scheme：
A kind of intelligent fingerprint cipher anti theft lock system, include the intelligent monitor and electric lockset of interconnection, the intelligence prison
Control device, which supplies the electric energy needed for the electric lockset and receives electric lockset, sends live state information, and the intelligent monitor includes single
Piece machine, keyboard, LCD display, memory, demodulator, path monitoring module, analog-digital converter and buzzer, for completing
The safety monitoring of communication, intelligent analysis and communication line between electric lockset；The electric lockset includes lock body
With the electromagnetic actuator for controlling lock body opening and closing, at least provided with fingerprint identification module, close in the lock body
Code input module and OLED LCD MODULEs, the fingerprint identification module are semiconductor module.
Intelligent monitor is in reception state all the time, the warning message and shape sent with fixed reception of beacons electric lockset
State information.For warning message, then sound, light alarm are sent by LCD display and buzzer at once；For status information, then
Internal memory is stored in, and compared with the historic state of electric lockset, draws variation tendency, the state change in future is predicted, passes through
LCD display provides corresponding information to operator on duty, and so that decision-making uses, intelligent monitor establishes a communications link with electric lockset
While, monitor the change for the supply current for flowing through communication line in real time by circuit monitoring module and A/D converter, effectively
Destruction caused by ground prevents human factor, ensure that the unimpeded of communication line.
Further, the fingerprint identification module is dark background light path design, is particularly suitable for dry finger, it is ensured that Lao Renhe
The good use of 3 years old children, the prism on fingerprint sensor surface use glass prism, fingerprint sensor surface oxidation-resistant, anti-corruption
Erosion, external force resistance are destroyed, and fingerprint sensor is sensed skin corium by vivo identification, had using the upper electricity of body capacitance sensing in addition
Gather the characteristics of image consistency is good；Fingerprint sensor is passed using the TCS2 of the Authentec producers of American apple company purchase
Sensor, operate when in use more convenient and simple.The algorithm comparison speed of this fingerprint identification module is fast, and carries self study work(
Can, can learn that fingerprint occurs by season gradually changes, and will not produce the phenomenon for door of not opening, such fingerprint is exactly more with more
It is handy.
Further, in order to prevent the artificial destruction of communication line and electromagnetic actuator from flowing through electromagnetism caused by other reasonses
The electric current of coil is excessive and burns coil, and the present invention is additionally provided with electric current on the connection line of intelligent monitor and electric lockset
Monitor, the electric current monitor use the current/voltage-converted chip MAX471 of MAXIM companies production, and the chip can will be by
Electric current I conversion output voltage U in couples is surveyed, and has that measurement range is big, precision is high, output voltage U and tested electric current I are directly proportional
Feature.
Further, intelligent monitor of the invention uses line sharing technology with electric lockset, electric energy is supplied and is believed
Breath transmission shares a twin core cable, improves the reliability and security of system, while in data-signal transmitting terminal and reception
End is designed with pulse transformer, for by data-signal become it is strong/die down, in transmitting terminal, the electric lockset passes through the pulse
Transformer is sent after the data-signal modulated is boosted；In the data that receiving terminal, the pulse transformer will receive
Demodulator is sent after signal decompression, to reduce loss of the carrier signal in transmitting procedure.
Further, in order to reduce interfering between communication and power supply, the selection to choke coil L, coupled capacitor C will
Consider, if carrier frequency fo=400kHz, in order to ensure that most signal energy is transferred to receiving terminal, take L=33.7 μ
H, C1=0.047 μ F.
Further, the single-chip microcomputer is 51 series monolithics (AT89051), complete the setting of password, storage, identification and
Display, driving electromagnetic actuator simultaneously detect its driving current value, the alarm signal that reception sensor is sent, send the work(such as data
Can, the password is arranged to mess code design, i.e. user can only need defeated when inputing password with addend word before and after proper password is intended to
The numeral entered includes the numerical order with proper password, can avoid preventing from being spied on by other people, safety and reliability is described
Password Input module is touch-screen input module.
Single-chip microcomputer receives the code keyed in, and compared with being stored in the password in EEPROM, if password is correct,
Electromagnetic actuator is driven to unlock；If password bad, allow operating personnel to re-enter password, can at most input three times；
If all incorrect three times, single-chip microcomputer is alarmed by communication line to intelligent monitor.Single-chip microcomputer by each unlocking operation and
Now the driving current value of electromagnetic actuator is sent to intelligent monitor as status information, while connect receiving from sensor
The warning message of mouth is also sent to intelligent monitor, the foundation as intelligent analysis.
Intelligent monitor receives the status information that lockset is sent（Including the unlatching of lockset, closing, first time password
Wrong, second password mistake, third time password mistake etc.）, flow through the current value of electromagnetic actuator coil, and read the moment connection
The power supply current value on road, triplicity get up to form a data block, and wherein mode of operation accounts for 1 byte, and supply current accounts for 2
Byte, coil current account for 2 bytes.
Further, in order to improve communication reliability, in the communication protocol between the intelligent monitor and electric lockset
By the way of repeating to send, electric lockset is sent 5 times to each group of Data duplication, and intelligent monitor receives this group of data
Afterwards, law error correction are decoded using big number, ensure that the accuracy of data receiver, in addition to saving internal memory to the data that receive
Using preconditioning technique, i.e., after often receiving a data, first by the data compared with the threshold value that single-chip microcomputer is set, if
More than threshold value, then overload alarm is sent；If less than threshold value, then the homogeneous data ratio received the data and the same day
Compared with reservation the greater.
Intelligent cipher lock software is programmed respectively using 51 series monolithic assembler languages to intelligent monitor and electric lockset.
Intelligent monitor software includes keyboard scan and LCD shows program, buzzer driver, clock modification and reading program, number
According to modules such as communication and preprocessor, intelligent analysis program and path monitoring programs.Electric lockset software is swept including keyboard
Retouch and show program, signal procedure, electromagnetic actuator with translator, LCD and detect the moulds such as program, sensor interface program
Block.Modular design method is used in software design procedure, is easy to the reading, debugging and improvement of program.
Further, the electric lockset reserves wireless security protection warning function, can send short messages and talk with to multiple users
Remind.
Further, the single-chip microcomputer is also preset with by the use of another finger print and is used as the unlocking side of anti-abduction finger print
Formula, and equipped with shooting and sound pick-up outfit, the anti-abduction finger print opening door lock set for abnormal condition, opening door lock
While the related personnel that sets before can be given to send short message and make a phone call to alarm by mobile phone, it is and all disengaging personnel are hidden
Cover and image and record.
Once collecting image, digital information will be transferred to digital signal processor to generate matching.Matching process
The first step is to adjust the fingerprint of scanning, and complete finger print seldom is used to identify by finger-printer reader, but DSP is (at data signal
Reason) using algorithm the feature and pattern of each fingerprint are extracted, with the unique digital code of generation.Second step in software flow is to read
The code generated from the image of scanning is taken, then by it compared with the potential occurrence of database.Comparison step need to
Want the finger print information in system access networked database or nonvolatile memory.
In addition, OLED LCD MODULEs of the present invention are prompted using highlighted captions, man-machine interface is user-friendly, and sets
Voice operating guiding is equipped with, high-decibel clearly voice message, shows human-computer dialogue, is operated simpler；When the batteries are low,
System meeting automatically prompting user changes battery in time, and low in energy consumption, stand-by power consumption is less than 40 uA, and four batteries are normally using
Under more than 1 year as long as.
Compared with prior art, the device have the advantages that being：
The present invention goes for dry finger user using fingerprint recognition and Password Input checking identity, fingerprint sensor, in addition,
Fingerprint sensor is vivo identification, senses skin corium, and finger top layer mill skin etc. will not cause not open the phenomenon of door；Password Input
Designed for mess code, fascination effect can be played to criminal；Intelligence degree is high, easy to control, unlocked provided with normal fingerprints and
Two kinds of unlocking modes of improper fingerprint unlocking, make intelligent monitor send different fingers by the finger print information for receiving different
Order；Warning device is provided with, artificial or other situations circuit damage meeting alerts are run into, in addition, the nothing being provided with
Line protection alarm device, the telephone number of setting can be given to send information reminding and audio alert, the present invention is simple in construction, and function is strong
Greatly, it is practical, the level of security of theftproof lock is improved, should be widely promoted application.
Embodiment
The present invention is got information about to allow those skilled in the art to become apparent from, the present invention will be made below further
Explanation.
A kind of intelligent fingerprint cipher anti theft lock system, include the intelligent monitor and electric lockset of interconnection, the intelligence
Energy monitor, which supplies the electric energy needed for the electric lockset and receives electric lockset, sends live state information, the intelligent monitor bag
Single-chip microcomputer, keyboard, LCD display, memory, demodulator, path monitoring module, analog-digital converter and buzzer are included, is used for
The safety monitoring of communication, intelligent analysis and communication line between completion and electric lockset；The electric lockset includes lockset
Body and the electromagnetic actuator for controlling lock body opening and closing, the lock body are provided with fingerprint identification module, close
Code input module and OLED LCD MODULEs, the fingerprint identification module are semiconductor module, wherein, the fingerprint recognition mould
Block is dark background light path design, is particularly suitable for dry finger, it is ensured that the good use of old man and 3 years old child, fingerprint sensor table
The prism in face uses glass prism, and fingerprint sensor surface oxidation-resistant, anticorrosive, external force resistance are destroyed, and fingerprint sensor is adopted in addition
Sense upper electricity with body capacitance, skin corium is sensed by vivo identification, there is the characteristics of collection image consistency is good；Fingerprint sensing
Device is operated more convenient and simple when in use using the TCS2 sensors of the Authentec producers of American apple company purchase.This
The algorithm comparison speed of fingerprint identification module is fast, and carries self-learning function, can learn the gradual change that fingerprint occurs by season
Change, the phenomenon for door of not opening will not be produced, such fingerprint is exactly getting easier and easier to use.
The intelligent monitor uses line sharing technology with electric lockset, electric energy supply and information transfer is shared two cores
Cable, the reliability and security of system are improved, while pulse transformer are designed with data-signal transmitting terminal and receiving terminal,
For by data-signal become it is strong/die down, in the data that transmitting terminal, the electric lockset will be modulated by the pulse transformer
Sent after signal boosting；In receiving terminal, the pulse transformer send demodulator after the data-signal received is depressured, with
Reduce loss of the carrier signal in transmitting procedure.
Single-chip microcomputer receives the code keyed in, and compared with being stored in the password in EEPROM, if password is correct,
Electromagnetic actuator is driven to unlock；If password bad, allow operating personnel to re-enter password, can at most input three times；
If all incorrect three times, single-chip microcomputer is alarmed by communication line to intelligent monitor.Single-chip microcomputer by each unlocking operation and
Now the driving current value of electromagnetic actuator is sent to intelligent monitor as status information, while connect receiving from sensor
The warning message of mouth is also sent to intelligent monitor, the foundation as intelligent analysis.
Intelligent monitor receives the status information that lockset is sent（Including the unlatching of lockset, closing, first time password
Wrong, second password mistake, third time password mistake etc.）, flow through the current value of electromagnetic actuator coil, and read the moment connection
The power supply current value on road, triplicity get up to form a data block, and wherein mode of operation accounts for 1 byte, and supply current accounts for 2
Byte, coil current account for 2 bytes.
Further, the electric lockset reserves wireless security protection warning function, can send short messages and talk with to multiple users
Remind, and at least reserved intelligent home network interface of the intelligent monitor and wireless remote control interface, while using high frequency M 1
Card, lock body reserve all-purpose card interface, and can master cellular phone remote setting visiting person identity card or Mobile phone card open work(in limited time
Energy.
In addition, the single-chip microcomputer is also preset with the unlocking mode by the use of another finger print as anti-abduction finger print,
And equipped with shooting and sound pick-up outfit, the anti-abduction finger print opening door lock set for abnormal condition, opening door lock
The related personnel set before can be given to send short message and make a phone call to alarm by mobile phone simultaneously, and all disengaging personnel are hidden
Image and record.
Once collecting image, digital information will be transferred to digital signal processor to generate matching.Matching process
The first step is to adjust the fingerprint of scanning, and complete finger print seldom is used to identify by finger-printer reader, but DSP is (at data signal
Reason) using algorithm the feature and pattern of each fingerprint are extracted, with the unique digital code of generation.Second step in software flow is to read
The code generated from the image of scanning is taken, then by it compared with the potential occurrence of database.Comparison step need to
Want the finger print information in system access networked database or nonvolatile memory.
The OLED LCD MODULEs of the present invention are prompted using highlighted captions, and man-machine interface is user-friendly, and sets
There is voice operating guiding, high-decibel clearly voice message, show human-computer dialogue, operate simpler；When the batteries are low, it is
System meeting automatically prompting user changes battery in time, and low in energy consumption, stand-by power consumption is less than 40 uA, and four batteries are under normal use
More than 1 year as long as.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
1. a kind of intelligent fingerprint cipher anti theft lock system, include the intelligent monitor and electric lockset of interconnection, the intelligence
Monitor, which supplies the electric energy needed for the electric lockset and receives electric lockset, sends live state information, it is characterised in that：The intelligence
Energy monitor includes single-chip microcomputer, keyboard, LCD display, memory, demodulator, path monitoring module, analog-digital converter and honeybee
Ring device, the safety monitoring for the communication between completion and electric lockset, intelligent analysis and communication line；The electric lockset
Including lock body and for controlling the electromagnetic actuator of lock body opening and closing, at least provided with fingerprint in the lock body
Identification module, Password Input module and OLED LCD MODULEs, the fingerprint identification module are semiconductor module.
2. intelligent fingerprint cipher anti theft lock system according to claim 1, it is characterised in that：The fingerprint identification module is
Dark background light path design, the prism on fingerprint sensor surface use glass prism；Other fingerprint sensor uses body capacitance sense
Ying Shang electricity, skin corium is sensed by vivo identification.
3. intelligent fingerprint cipher anti theft lock system according to claim 1 or 2, it is characterised in that：In intelligent monitor and
Current monitor is additionally provided with the connection line of electric lockset.
4. intelligent fingerprint cipher anti theft lock system according to claim 3, it is characterised in that：The intelligent monitor and electricity
Sub- lockset uses line sharing technology, electric energy supply and information transfer is shared a twin core cable, while sent out in data-signal
Sending end and receiving terminal are designed with pulse transformer, for by data-signal become it is strong/die down, in transmitting terminal, the electric lockset leads to
Cross after the pulse transformer boosts the data-signal modulated and send；In receiving terminal, the pulse transformer will connect
Demodulator is sent after the data-signal decompression received, to reduce loss of the carrier signal in transmitting procedure.
5. intelligent fingerprint cipher anti theft lock system according to claim 4, it is characterised in that：To choke coil L, coupled capacitor
C selection, if carrier frequency fo=400kHz, in order to ensure that most signal energy is transferred to receiving terminal, take L=33.7 μ
H, C1=0.047 μ F.
6. the intelligent fingerprint cipher anti theft lock system according to claim 4 or 5, it is characterised in that：The single-chip microcomputer is 51
Series monolithic, the password are arranged to mess code design, i.e., user can be with being intended to addend before and after proper password when inputing password
Word, the numeral that need to only input include the numerical order with proper password.
7. intelligent fingerprint cipher anti theft lock system according to claim 6, it is characterised in that：The intelligent monitor and electricity
In communication protocol between sub- lockset by the way of repeating to send, electric lockset is sent 5 times to each group of Data duplication, intelligence
Monitor connects decodes law error correction using big number, uses preconditioning technique to the data received in addition, i.e., often receives one
After data, first by the data compared with the threshold value that single-chip microcomputer is set, if greater than threshold value, then overload alarm is sent；Such as
Fruit is less than threshold value, then by the data compared with the homogeneous data that the same day receives, retains the greater.
8. intelligent fingerprint cipher anti theft lock system according to claim 7, it is characterised in that：The electric lockset reserves nothing
Line security alarm function.
9. the intelligent fingerprint cipher anti theft lock system according to claim 7 or 8, it is characterised in that：The intelligent monitor
At least reserved intelligent home network interface and wireless remote control interface；Blocked using high frequency M 1, the lock body reserves all-purpose card
Interface, and can master cellular phone remote setting visiting person identity card or Mobile phone card prescribe a time limit open function.
10. intelligent fingerprint cipher anti theft lock system according to claim 9, it is characterised in that：The single-chip microcomputer is also default
Unlocking mode of another the useful finger print as anti-abduction finger print, and equipped with shooting and sound pick-up outfit, for anon-normal
The anti-abduction finger print opening door lock that reason condition is set, the phase set before can be given by mobile phone while opening door lock
Pass personnel send short message and make a phone call to alarm, and by the hidden shooting of all disengaging personnel and record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158389.2A CN107895416A (en) | 2017-11-20 | 2017-11-20 | Intelligent fingerprint cipher anti theft lock system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158389.2A CN107895416A (en) | 2017-11-20 | 2017-11-20 | Intelligent fingerprint cipher anti theft lock system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107895416A true CN107895416A (en) | 2018-04-10 |
Family
ID=61805587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711158389.2A Pending CN107895416A (en) | 2017-11-20 | 2017-11-20 | Intelligent fingerprint cipher anti theft lock system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107895416A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826542A (en) * | 2019-01-30 | 2019-05-31 | 郑夏娜 | A kind of Domestic antitheft door based on exchange technology |
| CN114550351A (en) * | 2022-02-18 | 2022-05-27 | 江苏前文智能科技有限公司 | Intelligent lock for confidential cabinet based on intelligent interaction |
-
2017
- 2017-11-20 CN CN201711158389.2A patent/CN107895416A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826542A (en) * | 2019-01-30 | 2019-05-31 | 郑夏娜 | A kind of Domestic antitheft door based on exchange technology |
| CN114550351A (en) * | 2022-02-18 | 2022-05-27 | 江苏前文智能科技有限公司 | Intelligent lock for confidential cabinet based on intelligent interaction |
| CN114550351B (en) * | 2022-02-18 | 2024-01-16 | 江苏前文智能科技有限公司 | Intelligent lock for secret cabinet based on intelligent interaction |
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Application publication date: 20180410 |