CN110499961A - The anti-private smart lock for matching function - Google Patents

The anti-private smart lock for matching function Download PDF

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Publication number
CN110499961A
CN110499961A CN201910814458.3A CN201910814458A CN110499961A CN 110499961 A CN110499961 A CN 110499961A CN 201910814458 A CN201910814458 A CN 201910814458A CN 110499961 A CN110499961 A CN 110499961A
Authority
CN
China
Prior art keywords
circuit
lock
key
matching function
module
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.)
Pending
Application number
CN201910814458.3A
Other languages
Chinese (zh)
Inventor
邓业豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deshman Electrical And Mechanical (china) Co Ltd
Dessmann China Machinery and Electronic Co Ltd
Original Assignee
Deshman Electrical And Mechanical (china) Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deshman Electrical And Mechanical (china) Co Ltd filed Critical Deshman Electrical And Mechanical (china) Co Ltd
Priority to CN201910814458.3A priority Critical patent/CN110499961A/en
Publication of CN110499961A publication Critical patent/CN110499961A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/10—Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights
    • E05B17/103—Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights on keys
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0011—Key decoders
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • E05B49/002—Keys with mechanical characteristics, e.g. notches, perforations, opaque marks
    • 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
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • 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
    • G07C9/00944—Details of construction or manufacture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0057—Feeding
    • E05B2047/0058—Feeding by batteries

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Lock And Its Accessories (AREA)

Abstract

This application discloses a kind of anti-private smart lock for matching function, including lock construction and Key structure, the Key structure includes: key body, signal lamp and guide-lighting slot；The key body includes handle portion and insertion section；The signal lamp is between handle end and insertion section；The leaded light slot is arranged on insertion section, and the slot of guide-lighting slot is to consistent with the direction of insertion of insertion section；The signal lamp and lock construction constitute visible light communication；The lock construction includes: mechanical lock, visible light conciliation module and control module；It includes: that circuit is reconciled in pilot hole and reception that the visible light, which reconciles module,.In the embodiment of the present application, on the basis of the existing intelligent door lock in market, the function of mechanical key security fence is expanded, is peerless.The universal of intelligent door lock facilitates life, while meeting country's hard and fast rule, more effectively solves the security hidden trouble of mechanical key at this stage, instantaneity safety is increased dramatically.

Description

The anti-private smart lock for matching function
Technical field
This application involves smart lock technical fields, more particularly to a kind of anti-private smart lock for matching function.
Background technique
Recently as rapid development of economy, people's lives level is also continuously improved；Intelligent, digital information society It can gradually be deep into the every aspect of people's life, electronic lock is also constantly being popularized, and electronic lock is many kinds of on the market, Door-opening mode is multifarious, has bluetooth, WIFI, ZIGBEE, NFC, fingerprint, password etc., but there are all intelligence of explicit stipulation in country Can lock must have the function of key unlocking that could examine qualification, once mechanical key is replicated privately, electric function is then just as void If.
Summary of the invention
In order to solve the above-mentioned technical problem, the embodiment of the present application provides a kind of anti-private smart lock for matching function, quotes visible Light coded communication can also avoid mechanical key in the feelings not authorized by owner while can provide night door opening and illumination It is stolen under condition, private is matched, the further safety of promotion intelligent door lock.
The application implements to provide a kind of anti-private smart lock for matching function, including lock construction and Key structure, the key Structure includes:
Key body, signal lamp and guide-lighting slot；
The key body includes handle portion and insertion section；
The signal lamp is between handle end and insertion section；The leaded light slot is arranged on insertion section, the slot of guide-lighting slot To consistent with the direction of insertion of insertion section；The leaded light slot is for the guide frame as signal lamp；The signal lamp and lock are tied Structure constitutes visible light communication；
The lock construction includes:
Mechanical lock, visible light reconcile module and control module；
The visible light reconciles module
Circuit is reconciled in pilot hole and reception；
The pilot hole is used to for optical signal to be directed into reception and reconcile in circuit；The reception is reconciled circuit and is used for light source Signal is demodulated；
The control module controls whether out according to the output result that the physical action and receiving of mechanical lock reconcile circuit Door.
Further, the handle portion of the Key structure includes:
Key switch, battery and safety circuit；
The signal lamp is connected with safety circuit；
The signal lamp uses light emitting diode.
Further, the safety circuit includes:
First resistor and first capacitor parallel with one another；
One end of the first resistor is connected with the base stage of a triode；The light emitting diode is connected in parallel on the collection of triode Electrode and emitting stage, wherein the second electricity is connected together with the common end of the cathode of the emitter and light emitting diode of the triode It is grounded after resistance, the input terminal of battery is connected to together with the common end of the anode of the collector and diode of triode.
Further, the other end of the first resistor is connected to the output end of single-chip microcontroller；The single-chip microcontroller is located at key In main body.
Further, the reception conciliation circuit includes:
Sequentially connected avalanche photodide and automatic gain operational amplification circuit；
The avalanche photodide is for acquiring faint light source and being converted to electric signal；
The automatic gain operational amplification circuit is for carrying out electric signal to be demodulated to standard Transistor-Transistor Logic level.
Further, it is also connected in turn after the automatic gain operational amplification circuit:
Frequency changer circuit, intermediate level circuit, detecting circuit, AGC detecting circuit, AGC amplifying circuit and height put agc circuit；
The height puts agc circuit and is connected to operational amplification circuit；During another output end of the AGC amplifying circuit is connected to Electric discharge road；
Another output end of the detecting circuit is connected to deciphering module.
It further, include several random numbers and encrypted User ID data in the signal that the key body issues, Key body forms new code key by the way that random number combination root code key is carried out particular conversion；The deciphering module is calculated according to AES Method decrypts and goes to authenticate using User ID data.
Further, the reception, which is reconciled, is additionally provided on circuit using Hall magnetic sensor；The Hall magnetic sensor Direct-connected with single-chip microcontroller, which is located in the lock construction.
Further, the lock construction further include:
Communication module is constituted with subscriber household wireless network and is communicated；
Module is captured, is connected with the control module.
Further, the lock construction further include:
Bluetooth module is communicated with mobile phone composition.
In the embodiment of the present application, on the basis of the existing intelligent door lock in market, mechanical key security fence is expanded Function, be peerless.The universal of intelligent door lock facilitates life, while meeting country's hard and fast rule, more effectively The security hidden trouble for solving mechanical key at this stage, instantaneity safety is increased dramatically.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is schematic diagram of device provided by the embodiments of the present application；
Fig. 2 is the structural schematic diagram of the application；
Fig. 3 is the circuit diagram of safety circuit；
Fig. 4 is the circuit diagram of photoelectric detective circuit；
Fig. 5 is the module map of the application；
Fig. 6 is the communication module schematic diagram of the application.
The meaning that attached drawing compares in figure:
101- signal lamp, 102- leaded light slot, 201- pilot hole, 202-, which is received, reconciles circuit board.
Specific embodiment
To enable application purpose, the feature, advantage of the application more obvious and understandable, below in conjunction with the application Attached drawing in embodiment, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that disclosed below Embodiment be only some embodiments of the present application, and not all embodiment.Based on the embodiment in the application, this field Those of ordinary skill's all other embodiment obtained without making creative work belongs to the application protection Range.
Further illustrate the technical solution of the application below with reference to the accompanying drawings and specific embodiments.
In the description of the present application, it is to be understood that the instruction such as term " on ", "lower", "top", "bottom", "inner", "outside" Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the application and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it should not be understood as the limitation to the application.
The anti-private smart lock for matching function of one kind involved in the application, quotes visible light coded communication, can provide night Between door opening and illumination while, can also avoid that mechanical key is stolen in the case where not authorized by owner, private is matched, further be promoted The safety of intelligent door lock.
On specific structure, including lock construction and Key structure two parts.
In the application, Key structure includes:
Key body, signal lamp and guide-lighting slot；
Key body includes handle portion and insertion section；
Signal lamp is between handle end and insertion section；Guide-lighting slot is arranged on insertion section, the slot of guide-lighting slot to insertion The direction of insertion in portion is consistent；Guide-lighting slot is for the guide frame as signal lamp；Signal lamp and lock construction constitute visible light communication.
In this application, signal lamp uses relatively conventional light emitting diode, and the handle portion of Key structure includes that key is opened Pass, battery and safety circuit.
Safety circuit includes: first resistor and first capacitor parallel with one another；
One end of first resistor is connected with the base stage of a triode；The collector of triode is being connected serially to light emitting diode just Pole, emitter are connected serially to the cathode of light emitting diode；Together with the common end of the cathode of the emitter and light emitting diode of triode It is grounded after connection second resistance, the input of battery is connected to together with the common end of the anode of the collector and diode of triode End.In this structure, the RC circuit of base stage forms easy filtering, goes the band logical of matching fixed frequency by the adjusting of capacitance-resistance value Accelerate.
As a specific embodiment, as shown, the mechanical key end in the application, the shank of the key top and metal bonding There is LED lamp bead in part, has the advantages that small in size, the service life is long, price is low, power is low etc., and be easily achieved High Speed Modulation.The shank of the key On have a key switch, concealed built-in button cell and safety circuit are used for high frequency modulated LED light source signal, illumination simultaneously, Realize visible light coded communication.For the safety circuit schematic diagram of key end as schemed, Q1 triode can reach 100MHZ band above, general Logical LED can reach 2MHZ band above.MCU exports high frequency encryption data, by adjusting the frequency-selecting of C1, R1 filtering parameter, fz=1/2 π rc can make the visible light source of circuit modulation effectively output 200KB/S above data amount.
In the application, lock construction includes:
Mechanical lock, visible light reconcile module and control module (single-chip microcontroller)；Pilot hole connects for optical signal to be directed into It receives in circuit；It receives and reconciles circuit for demodulating light signal.Control module according to the physical action of mechanical lock and The output result for receiving to reconcile circuit controls whether to open the door.
The smart lock of the application receives control terminal, and lock core receives the circuit for reconciling circuit after key drive rotates The Hall magnetic sensor being arranged on plate detects, at this moment starts photoelectric detective circuit, and avalanche photodide has high sensitivity, Low noise, the characteristics such as high bandwidth cooperate automatic gain control circuit, are received, amplified to faint light source, demodulation process, also Original goes out original data signal and is decrypted, authenticates, identifies can determine whether out whether the key is effective.
Hall sensor and MCU are direct-connected in this application, go detection key turns, because being low-power consumption application, receive Reconciling circuit is usually suspend mode closed state.Lock core rotation will drive physics magnet steel and turn to Hall sensor, at this moment can call out Awake system starts, and can know that mechanical key is correct.Therefore, the Hall sensor received on the circuit board for reconciling circuit is made For the detecting element of the physical action of lock core rotation, and member of the circuit from dormant state to working condition is reconciled as waking up to receive Device.
In the application, the data between key end and lock construction end use encryption data, and the light of key end is converted into electricity The MCU for inputting lock later is exactly simple IO single line communication, is completed completely by software: key and lock end have one it is identical only A piece code key, key output can have some random numbers and encrypted User ID data.Lock end passes through random number combination root Code key carries out particular conversion and forms new code key, then goes decrypted user ID data to go to authenticate by aes algorithm.
As shown, the photoelectric detective circuit in the application includes:
Sequentially connected avalanche photodide, operational amplification circuit, frequency changer circuit, intermediate level circuit, detecting circuit, AGC Detecting circuit, AGC amplifying circuit and height put agc circuit.
In specific scheme, therefore, to assure that have avalanche photodide and operational amplification circuit, to be formed to key body Circuit reception and signal conversion.Other subsequent circuits be all for operational amplification circuit processing after signal into Capable subsequent processing enables to signal more pure and fresh effectively, this block belongs to the prior art, without repeating.
Height puts agc circuit and is connected to operational amplification circuit；Another output end of AGC amplifying circuit is connected to intermediate level circuit； Another output end of detecting circuit is connected to deciphering module.
Bluetooth module, wifi module and communication module are additionally provided with for compared with the existing technology, inside this smart lock To realize intelligentized use.
Specifically in use, being rotated by 90 ° after key insertion electronic lock cylinder, national regulation outfit can be met with normal door The requirement of mechanical key.At the same time, low-power consumption photodiode inside key lamp pearl source alignment carries out operation amplifier, right Visible light signal is modulated demodulation, carries out code key pairing.
If mechanical key is matched by private, the verifying of electronics code key does not pass through, then issues caution sound, send warning message by WIFI To master cellular phone (having the lockset of face snap function can directly be captured).
If key loss, this key data can be deleted, and temporarily carry out door to lockset by the interaction of cell phone application bluetooth Outer locking waits owner's processing.
If being coerced by people, key end can be with Setting pattern, and by way of connecting by switching several times, selectivity issues correct Opening signal, SOS alarm signal notify household.
For compared with the existing technology, the application joined visible light communication in the mode that machinery opens the door when opening the door Mode, for physical mechanical lock inside joined encrypted circuit, to realize the quantum jump of the safety of mechanical lock, for A possibility that duplication lock, has carried out great limitation, has just greatly improved safety in this part.
Secondly, not merely intelligence matches a lock to this smart lock, for different locks, due to being essentially all out It has just been prepared when factory, as long as can match with the data stored in server can for the decrypted result inside smart lock Institute is opened to realize.
Opened in the application mode be different from unicity in the prior art, but the unlocking of physics aspect is needed to meet While condition, encrypted visible light signal also can satisfy condition, and two conditions can realize lock core when meeting It opens, is greatly promoted in safety.
In addition, this smart lock can also be adapted to the scene of Internet of Things, it is according to different unlocking structures, relevant information is long-range It is transferred on the mobile terminals such as mobile phone, to accomplish timely to remind.
For newly with lock in the case where, can use Bluetooth pairing module, in a manner of mobile phone by the data newly locked be added to In door lock, to realize the increase and decrease operation an of safety lock.
The above is only the preferred embodiment of the application, it is noted that for the ordinary skill people of the art For member, under the premise of not departing from present techniques principle, several improvement and deformations can also be made, these improvement and deformations Also it should be regarded as the protection scope of the application.

Claims (10)

1. a kind of anti-private smart lock for matching function, including lock construction and Key structure, which is characterized in that
The Key structure includes:
Key body, signal lamp and guide-lighting slot；
The key body includes handle portion and insertion section；
The signal lamp is between handle end and insertion section；The leaded light slot is arranged on insertion section, the slot of guide-lighting slot to The direction of insertion of insertion section is consistent；The leaded light slot is for the guide frame as signal lamp；The signal lamp and lock construction structure At visible light communication；
The lock construction includes:
Mechanical lock, visible light reconcile module and control module；
The visible light reconciles module
Circuit is reconciled in pilot hole and reception；
The pilot hole is used to for optical signal to be directed into reception and reconcile in circuit；The reception is reconciled circuit and is used for light signal It is demodulated；
The control module controls whether to open the door according to the output result that the physical action and receiving of mechanical lock reconcile circuit.
2. the anti-private smart lock for matching function according to claim 1, which is characterized in that
The handle portion of the Key structure includes:
Key switch, battery and safety circuit；
The signal lamp is connected with safety circuit；
The signal lamp uses light emitting diode.
3. the anti-private smart lock for matching function according to claim 2, which is characterized in that
The safety circuit includes:
First resistor and first capacitor parallel with one another；
One end of the first resistor is connected with the base stage of a triode；The light emitting diode is connected in parallel on the collector of triode And emitting stage, wherein after connecting second resistance together with the common end of the cathode of the emitter and light emitting diode of the triode The input terminal of battery is connected to together with ground connection, the collector of triode and the positive common end of diode.
4. the anti-private smart lock for matching function according to claim 3, which is characterized in that
The other end of the first resistor is connected to the output end of single-chip microcontroller；The single-chip microcontroller is located in key body.
5. the anti-private smart lock for matching function according to claim 1, which is characterized in that
Circuit is reconciled in the reception
Sequentially connected avalanche photodide and automatic gain operational amplification circuit；
The avalanche photodide is for acquiring faint light source and being converted to electric signal；
The automatic gain operational amplification circuit is for carrying out electric signal to be demodulated to standard Transistor-Transistor Logic level.
6. the anti-private smart lock for matching function according to claim 5, which is characterized in that
It is also connected in turn after the automatic gain operational amplification circuit:
Frequency changer circuit, intermediate level circuit, detecting circuit, AGC detecting circuit, AGC amplifying circuit and height put agc circuit；
The height puts agc circuit and is connected to operational amplification circuit；Another output end of the AGC amplifying circuit is connected to middle electric discharge Road；
Another output end of the detecting circuit is connected to deciphering module.
7. the anti-private smart lock for matching function according to claim 6, which is characterized in that
It include that several random numbers and encrypted User ID data, key body pass through handle in the signal that the key body issues Random number combination root code key carries out particular conversion and forms new code key；The deciphering module is decrypted according to aes algorithm and utilizes use Family ID data go to authenticate.
8. the anti-private smart lock for matching function according to claim 7, which is characterized in that
The reception is reconciled and is provided with Hall magnetic sensor on circuit；The Hall magnetic sensor and single-chip microcontroller are direct-connected, the monolithic Machine is located in the lock construction.
9. the anti-private smart lock for matching function according to claim 7, which is characterized in that
The lock construction further include:
Communication module is constituted with subscriber household wireless network and is communicated；
Module is captured, is connected with the control module.
10. the anti-private smart lock for matching function according to claim 7, which is characterized in that
The lock construction further include:
Bluetooth module is communicated with mobile phone composition.
CN201910814458.3A 2019-08-30 2019-08-30 The anti-private smart lock for matching function Pending CN110499961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910814458.3A CN110499961A (en) 2019-08-30 2019-08-30 The anti-private smart lock for matching function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910814458.3A CN110499961A (en) 2019-08-30 2019-08-30 The anti-private smart lock for matching function

Publications (1)

Publication Number Publication Date
CN110499961A true CN110499961A (en) 2019-11-26

Family

ID=68590711

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910814458.3A Pending CN110499961A (en) 2019-08-30 2019-08-30 The anti-private smart lock for matching function

Country Status (1)

Country Link
CN (1) CN110499961A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111612951A (en) * 2020-06-04 2020-09-01 德施曼机电（中国）有限公司 Intelligent door lock with anti-prying function and anti-prying detection method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201574635U (en) * 2009-08-05 2010-09-08 福建弘腾电子科技有限公司 Radio-frequency anti-burglary alarm lock
CN103291136A (en) * 2012-02-29 2013-09-11 深圳光启创新技术有限公司 Intelligent lock system
CN108868369A (en) * 2018-07-12 2018-11-23 中国科学院半导体研究所 Machine light integrated lock, key and key

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201574635U (en) * 2009-08-05 2010-09-08 福建弘腾电子科技有限公司 Radio-frequency anti-burglary alarm lock
CN103291136A (en) * 2012-02-29 2013-09-11 深圳光启创新技术有限公司 Intelligent lock system
CN108868369A (en) * 2018-07-12 2018-11-23 中国科学院半导体研究所 Machine light integrated lock, key and key

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111612951A (en) * 2020-06-04 2020-09-01 德施曼机电（中国）有限公司 Intelligent door lock with anti-prying function and anti-prying detection method thereof

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Application publication date: 20191126