CN109389724A - The smart lock and its method for preventing signal interference from unlocking - Google Patents
The smart lock and its method for preventing signal interference from unlocking Download PDFInfo
- Publication number
- CN109389724A CN109389724A CN201811190126.4A CN201811190126A CN109389724A CN 109389724 A CN109389724 A CN 109389724A CN 201811190126 A CN201811190126 A CN 201811190126A CN 109389724 A CN109389724 A CN 109389724A
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- signal
- smart lock
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- unlocking
- lock
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- 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
-
- 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
-
- 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
- G07C2009/00634—Power supply for the lock
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
Abstract
This application discloses a kind of smart lock for preventing signal interference from unlocking and its methods, and wherein smart lock includes: power supply, switching circuit, electric-motor drive unit, lock control motor, switch limiting circuit and induction antenna coil；Wherein, the electric-motor drive unit passes through the switching circuit and the power electric connection；The switching circuit is coupled by the switch limiting circuit and the induction antenna coil；The electric-motor drive unit is electrically connected with the lock control motor；Wherein, the lock control motor is opened or closed for controlling the smart lock；The electric-motor drive unit is for controlling the lock control motor operating.The smart lock for preventing signal interference from unlocking and method of the application is also avoided that smart lock is unlocked in the environment of signal interference, can guarantee under the premise of meeting normally-open or closing smart lock, violence is avoided to unlock.
Description
Technical field
This application involves smart lock is arrived, a kind of smart lock and its method for preventing signal interference unlocking is especially related to.
Background technique
The manufacturer of smart lock is more and more at present, and application is more and more wider, in addition to shared bicycle lock, intelligent door lock also exist
Rapid growth, but people still suspect to the safety of smart lock.The international door industry review of the 9th China (Yongkang) May in 2018
There can be the opening of " the middle gateway of a country is all " Zhejiang Yongkang, the boss of the one smart lock company in Hunan comes " kicking shop " with a small black box,
Most of smart lock, which is opened easily, causes industry vibration.Small black box is exactly a Tesla coil in fact --- utilize transformation
Device makes common voltage boost, then via two-stage coil, from the equipment of electric discharge terminal electric discharge.Tesla coil can generate strong electromagnetic
The circuit of pulse pair intelligent door lock causes strong jamming, so that chip is caused to crash and restart, and after some smart locks default is restarted
Auto-unlocking.Radio frequency strong electromagnetic may also be directly at the control terminal of unlocking circuit (such as key-press input end of key unlocking)
Impulse disturbances are generated, system is allowed to be mistaken for normal unlocking instruction, triggering electric motor starting is unlocked；Strong electromagnetic is it is also possible to straight
The control terminal for connecing interference motor-drive circuit directly initiates motor unlocking.And to prevent smart lock by electromagnetic interference, when design, removes
The electromagnetic shielding of sensitive signal is carried out, chip crash not have unlocking action when restarting, it is also contemplated that the EMI performance of circuit
(electromagnetic interference) eliminates EMI interference for example, by using differential line, carry out the integrality of power supply and ground, and reinforce key etc.
Detect the Key dithering of signal.Nonetheless, it is also difficult to guarantee to be entirely capable of withstanding external strong electromagnetic.The present invention is sought to
Finding a kind of simple effective method prevents from unlocking by strong electromagnetic violence, improves the safety of smart lock.
Summary of the invention
The main purpose of the application be provide it is a kind of prevent signal interference unlock smart lock and its method, realize even if
In the environment of electromagnetic interference, it is also avoided that the technical effect that smart lock is unlocked.
The application provides a kind of smart lock for preventing signal interference from unlocking, comprising:
Power supply, switching circuit, electric-motor drive unit, lock control motor, switch limiting circuit, induction antenna coil；
Wherein, the electric-motor drive unit passes through the switching circuit and the power electric connection；The switching circuit is logical
It crosses the switch limiting circuit and the induction antenna coil couples；The electric-motor drive unit is electrically connected with the lock control motor
It connects；
Wherein, the lock control motor is opened or closed for controlling the smart lock；The electric-motor drive unit is for controlling
Make the lock control motor operating.
Further, the switch limiting circuit includes:
Thresholding driving circuit and peak-detector circuit, the thresholding driving circuit and peak-detector circuit electrical connection；
Wherein, the peak-detector circuit is used to the coil-induced obtained interference signal of the induction antenna carrying out detection
Processing, becomes direct current voltage pulse signal；Described in the thresholding driving circuit is used to be higher than when the direct current voltage pulse signal
When the switching threshold of thresholding driving circuit, output signal remains open the switching circuit.
Further, the interference signal includes high-frequency signal.
Further, the high-frequency signal is the signal that frequency is greater than 3MHz.
Further, further includes: input interface unit and intelligent control processor unit；The intelligent control processor list
It is first to be connect with the equal signal of the input interface unit, battery, electric-motor drive unit and switching circuit.
Further, further includes: Power Management Unit；The Power Management Unit is for controlling the power supply with to intelligence
Control processor unit or electric-motor drive unit provide electric energy.
Further, further includes: shielding case；The switching circuit and switch limiting circuit are in the shielding case.
Further, input interface unit includes fingerprint Identification sensor, head portrait identification sensor, pupil identification sensing
It is one or more in device, numeric keypad and wireless communication interface.
Further, the smart lock includes door lock, car lock or shared bicycle lock.
The present invention provide it is a kind of prevent electromagnetic interference unlock method, applied to prevent signal interference unlock smart lock,
The described method includes:
Whether the source signal for sensing interference source is interference signal；
If so, the interference signal is become direct current voltage pulse signal；
According to the direct current voltage pulse signal, controls the smart lock and be held off shape.
The smart lock for preventing signal interference from unlocking and method of the application also can in the environment of signal interference
It avoids smart lock from unlocking, can guarantee under the premise of meeting normally-open or closing smart lock, violence is avoided to unlock.
Detailed description of the invention
Fig. 1 is the structural schematic block diagram of the smart lock for preventing signal interference from unlocking of one embodiment of the application；
Fig. 2 is the structural schematic block diagram of the smart lock for preventing signal interference from unlocking of one embodiment of the application；
Fig. 3 is the switching circuit and switch limiting circuit schematic diagram of one embodiment of the application；
Fig. 4 is the structural schematic block diagram of the smart lock for preventing signal interference from unlocking of one embodiment of the application.
Appended drawing reference is as follows:
Antenna ANT1, capacitor C1, diode D1, diode D2, capacitor C2, resistance R2, transient voltage suppressor
TVS1, NMOS tube Q2, resistance R4, capacitor C3, resistance R5, signal end A, signal end B, NMOS tube Q1, resistance R1, PMOS tube SW1,
Power input POWER_IN, power output end POWER_OUT, power supply 10, switching circuit 20, electric-motor drive unit 30, lock control
Motor 40 switchs limiting circuit 50, induction antenna coil 60, thresholding driving circuit 51, peak-detector circuit 52, input interface list
Member 70, intelligent control processor unit 80, Power Management Unit 90.
The embodiments will be further described with reference to the accompanying drawings for realization, functional characteristics and the advantage of the application purpose.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here
To explain.
Referring to Fig. 1, the embodiment of the present application provides a kind of smart lock for preventing signal interference from unlocking, comprising:
Power supply 10, switching circuit 20, electric-motor drive unit 30, lock control motor 40, switch limiting circuit 50, induction antenna line
Circle 60；
Wherein, electric-motor drive unit 30 is electrically connected by switching circuit 20 with power supply 10；Switching circuit 20 passes through switch limit
Circuit 50 processed is coupled with induction antenna coil 60；Electric-motor drive unit 30 is electrically connected with lock control motor 40；
Wherein, lock control motor 40 is opened or closed for controlling smart lock；Electric-motor drive unit 30 is for controlling lock control electricity
Machine 40 operates.
Smart lock can be any lock, including door lock, car lock or shared bicycle lock etc..Above-mentioned smart lock can by
In the case where electromagnetic interference, smart lock is prevented to be opened.Specifically, in the environment of electromagnetic interference, induction antenna coil 60 will
Induce interference signal, switch limiting circuit 50 limits switching circuit 20 according to interference signal, and then make power supply 10 with
The conductive track of electric-motor drive unit 30 disconnects, and keeps lock control motor 40 inoperative, i.e., smart lock is not opened.Interference signal can be with
For high-frequency signal, high-frequency signal can be greater than the signal of 3MHz for frequency.Interference signal can also be believed for low frequency signal, intermediate frequency
Number, one or more of high-frequency signal, very high frequency(VHF) signal, ultrahigh-frequency signal, specifically, the frequency of low frequency signal is 30
~300kHz, the frequency of intermediate-freuqncy signal are 300~3000kHz, and the frequency of high-frequency signal is 3~30MHz, the frequency of very high frequency(VHF) signal
30~300MHz of rate, the frequency of ultrahigh-frequency signal are 300~1000MHz.In another embodiment, frequency can also be greater than
The magnetic field signal of 3MHz or more is defined as high-frequency signal, and interference signal is high-frequency signal.Wherein, power supply 10 can be any feasible
Power supply, for example, alternating current, battery, by modulated power supply, alternating current or direct current.Switching circuit 20 is that can arbitrarily be limited by switch
The circuit that circuit 50 processed controls.After electric-motor drive unit 30 obtains the power supply of power supply, the unlocking of lock control motor 40 can be controlled.Induction
The circle number of aerial coil 60 can be set as needed, specifically, circle number needs to match switch limiting circuit 50 so that induction day
The interference signal that line coil 60 induces can be used in limiting circuit.
Referring to fig. 2, specifically, switch limiting circuit 50 includes:
Thresholding driving circuit 51 and peak-detector circuit 52, thresholding driving circuit and peak-detector circuit electrical connection；
Wherein, peak-detector circuit is used to incude induction antenna coil 60 obtained interference signal and carries out detection processing,
Become direct current voltage pulse signal；Thresholding driving circuit is used to be higher than the switch of thresholding driving circuit when direct current voltage pulse signal
When thresholding, output signal remains open switching circuit 20.
Switch limiting circuit 50 is able to incude obtained interference signal according to induction antenna coil 60 as a result, makes switch electricity
Road 20 remains open, so that both just electromagnetic interference signal interfered, can not also unlock.To prevent criminal from utilizing electromagnetic interference
Violence is unlocked.
Referring to Fig. 3, specifically, thresholding driving circuit includes: NMOS tube Q2；Peak-detector circuit includes: capacitor C1, two poles
Pipe D1, diode D2, capacitor C2 and resistance R2；Wherein capacitor C1 mono- terminates induction antenna coil 60, another terminating diode D1
N-terminal and diode D2 the end P；The end P of diode D1 is grounded；The N-terminal of diode D2 connect one end of capacitor C2, resistance R2 one
The grid at end and NMOS tube Q2；The other end of the other end ground connection and resistance R2 of capacitor C2；The source electrode of NMOS tube Q2 is grounded, NMOS
The drain electrode of pipe Q2 connects switching circuit 20.
Specifically, switching circuit 20 includes: PMOS tube SW1, NMOS tube Q1, resistance R1, resistance R4, resistance R5 and capacitor
C3；A wherein termination control line road of resistance R5, one end, one end of resistance R4, NMOS of another termination capacitor C3 of resistance R5
The drain electrode of pipe Q2 and the grid of NMOS tube Q1；The other end of the other end ground connection and capacitor C3 of resistance R4；The source of NMOS tube Q1
Pole ground connection, one end of the drain electrode connecting resistance R1 of NMOS tube Q1 and the grid of PMOS tube SW1；The drain electrode of PMOS tube SW1 connects motor drive
Moving cell 30, the other end and power supply of the source electrode connecting resistance R1 of PMOS tube SW1.
Further, the power supply of PMOS tube connects the source electrode of PMOS tube；The power supply of NMOS tube connects the drain electrode of NMOS tube；PMOS tube
SW1, NMOS tube Q1, NMOS tube Q2 are enhanced metal-oxide-semiconductor.
Further, switch limiting circuit 50 further includes transient voltage suppressor TVS1, and the grid of NMOS tube Q2 connects
The N-terminal of transient voltage suppressor TVS1, the end the P ground connection of transient voltage suppressor TVS1.It is prevented to realize
The grid source electrode of NMOS tube Q2 is breakdown.
Referring to fig. 4, further, the smart lock for preventing signal interference from unlocking further include: input interface unit 70 and intelligence
Control processor unit 80；Intelligent control processor unit and input interface unit, battery, electric-motor drive unit 30 and switch electricity
The connection of the equal signal in road 20.
Wherein, input interface unit includes fingerprint Identification sensor, head portrait identification sensor, pupil identification sensor, number
One or more in word keyboard and wireless communication interface, effect is that unlocking instruction input is provided for smart lock.Intelligent control processing
Device unit effect be operation smart lock program, setting input unlocking preset information, input information receive, decryption, information comparison and/
Or judgement, control electric-motor drive unit 30 execute unlocking motion.
Referring to fig. 4, further, the smart lock for preventing signal interference from unlocking further include: Power Management Unit 90, power supply pipe
Reason unit is for controlling power supply to provide electric energy to intelligent control processor unit or electric-motor drive unit 30.
Further, the smart lock for preventing signal interference from unlocking further include: shielding case；Switching circuit 20 and switch limitation electricity
Road 50 is in shielding case.To improve the resistance to electromagnetic interference as far as possible.
In addition, being illustrated herein to illustrate the application method for the smart lock for preventing signal interference from unlocking:
When standby, a-signal end (interface of intelligent control processor unit and switching circuit 20) output low level (makes NMOS
The grid voltage of pipe Q1 is less than the level of threshold voltage), NMOS tube Q2 is not turned on, and NMOS tube Q1 is not turned on, therefore the grid of SW1
It is drawn high by R1, PMOS tube SW1 is disconnected, and does not execute unlocking operation.When normal unlocking, NMOS tube Q2 is not turned on, and the output of a-signal end is high
NMOS tube Q1 is connected in level (grid voltage of NMOS tube Q1 is made to be greater than or equal to the level of threshold voltage), to control PMOS tube
SW1 grid is pulled low, and PMOS switch SW1 is connected, so that power supply is powered to electric-motor drive unit 30, opens driving motor movement
Lock.
When there is electromagnetic interference (such as can interfere intelligent control processor unit), aerial coil ANT1 induction receives dry
Signal is disturbed, is coupled through capacitor C1, diode D1, diode D2, capacitor C2, resistance R2 (i.e. peak-detector circuit) are to detection
Positive voltage signal, when this signal voltage is more than the VGS threshold voltage of NMOS tube Q2, NMOS tube Q2 conducting, by NMOS tube Q1's
Grid drags down, and the disturbed high level that produces can not be such that NMOS tube Q1 is connected a-signal end at this time, and PMOS tube SW1 is protected
Disconnection is held, to prevent electromagnetic interference violence from unlocking.
The smart lock for preventing signal interference from unlocking of the application is also avoided that intelligence in the environment of signal interference
It can lock and unlock, can guarantee under the premise of meeting normally-open or closing smart lock, violence is avoided to unlock.
The embodiment of the present application provides a kind of method for preventing signal interference from unlocking, applied to the intelligence for preventing signal interference from unlocking
It can lock, which comprises
Whether the source signal for sensing interference source is interference signal；
If so, the interference signal is become direct current voltage pulse signal；
According to the direct current voltage pulse signal, controls the smart lock and be held off.
The method of present implementation can be applied to any feasible smart lock, preferably such as the intelligence in aforementioned any embodiment
Lock.The method that present embodiment is introduced for the smart lock in any embodiment is stated before this.Interference source can be electromagnetism,
Source signal can be the magnetic field signal of electromagnetism, and interference signal can be low frequency signal, intermediate-freuqncy signal, high-frequency signal, very high frequency(VHF) letter
Number, one or more of ultrahigh-frequency signal, specifically, the frequency of low frequency signal is 30~300kHz, intermediate-freuqncy signal
Frequency is 300~3000kHz, and the frequency of high-frequency signal is 3~30MHz, 30~300MHz of frequency of very high frequency(VHF) signal, superfrequency
The frequency of signal is 300~1000MHz.In another embodiment, the magnetic field signal that frequency is greater than 3MHz or more can also be determined
Justice is high-frequency signal, and interference signal is high-frequency signal, due to electromagnetic induction principle, in the case where there is electromagnetic interference in the external world, is led to
High-frequency signal will necessarily be induced by crossing induction antenna coil 60.Specifically, under electromagnetic interference, induction antenna coil 60 senses magnetic
Whether the frequency of field signal is greater than 3MHz, if so, being determined as high-frequency signal, switch limiting circuit 50 will be at high-frequency signal
Reason becomes direct current voltage pulse signal, is held off switching circuit 20, so that electric-motor drive unit 30 is unable to get electricity
The power supply in source, lock control motor 40 can not unlock.
The method for preventing signal interference from unlocking of the application is also avoided that intelligence in the environment of electromagnetic interference
Lock is unlocked, and can guarantee under the premise of meeting normally-open or closing smart lock, strong electromagnetic violence is avoided to unlock.
The foregoing is merely preferred embodiment of the present application, are not intended to limit the scope of the patents of the application, all utilizations
Equivalent structure or equivalent flow shift made by present specification and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, similarly include in the scope of patent protection of the application.
Claims (10)
1. a kind of smart lock for preventing signal interference from unlocking characterized by comprising
Power supply, switching circuit, electric-motor drive unit, lock control motor, switch limiting circuit and induction antenna coil；
Wherein, the electric-motor drive unit passes through the switching circuit and the power electric connection；The switching circuit passes through institute
It states switch limiting circuit and the induction antenna coil couples；The electric-motor drive unit is electrically connected with the lock control motor；
Wherein, the lock control motor is opened or closed for controlling the smart lock；The electric-motor drive unit is for controlling institute
State lock control motor operating.
2. the smart lock according to claim 1 for preventing signal interference from unlocking, which is characterized in that the switch limiting circuit
Include:
Thresholding driving circuit and peak-detector circuit, the thresholding driving circuit and peak-detector circuit electrical connection；
Wherein, the peak-detector circuit is used to carry out the induction antenna coil-induced obtained interference signal at detection
Reason, becomes direct current voltage pulse signal；The thresholding driving circuit is used to be higher than the door when the direct current voltage pulse signal
When limiting the switching threshold of driving circuit, output signal remains open the switching circuit.
3. the smart lock according to claim 2 for preventing signal interference from unlocking, which is characterized in that the interference signal includes
High-frequency signal.
4. the smart lock according to claim 3 for preventing signal interference from unlocking, which is characterized in that the high-frequency signal is frequency
Rate is greater than the signal of 3MHz.
5. the smart lock according to claim 1 for preventing signal interference from unlocking, which is characterized in that further include: input interface
Unit and intelligent control processor unit；The intelligent control processor unit and the input interface unit, battery, motor drive
Moving cell is connected with the equal signal of switching circuit.
6. the smart lock according to claim 1 for preventing signal interference from unlocking, which is characterized in that further include: power management
Unit；The Power Management Unit is for controlling the power supply to provide to intelligent control processor unit or electric-motor drive unit
Electric energy.
7. the smart lock according to claim 1 for preventing signal interference from unlocking, which is characterized in that further include: shielding case；Institute
It states switching circuit and switch limiting circuit is in the shielding case.
8. the smart lock according to claim 5 for preventing signal interference from unlocking, which is characterized in that
Input interface unit includes fingerprint Identification sensor, head portrait identification sensor, pupil identification sensor, numeric keypad and nothing
It is one or more in line communication interface.
9. the smart lock according to claim 1 for preventing signal interference from unlocking, which is characterized in that the smart lock includes door
Lock, car lock or shared bicycle lock.
10. it is a kind of prevent signal interference unlock method, which is characterized in that applied to prevent signal interference unlock smart lock,
The described method includes:
Whether the source signal for sensing interference source is interference signal；
If so, the interference signal is become direct current voltage pulse signal；
According to the direct current voltage pulse signal, controls the smart lock and be held off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811190126.4A CN109389724A (en) | 2018-10-12 | 2018-10-12 | The smart lock and its method for preventing signal interference from unlocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190126.4A CN109389724A (en) | 2018-10-12 | 2018-10-12 | The smart lock and its method for preventing signal interference from unlocking |
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| CN109389724A true CN109389724A (en) | 2019-02-26 |
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| CN201811190126.4A Pending CN109389724A (en) | 2018-10-12 | 2018-10-12 | The smart lock and its method for preventing signal interference from unlocking |
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| CN110130732A (en) * | 2019-05-08 | 2019-08-16 | 重庆鸣洋科技股份有限公司 | A kind of intelligent door lock burglary-resisting system |
| CN110211349A (en) * | 2019-06-27 | 2019-09-06 | 杨晓艺 | A kind of smart home entrance guard security system based on ZigBee |
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| CN110130732A (en) * | 2019-05-08 | 2019-08-16 | 重庆鸣洋科技股份有限公司 | A kind of intelligent door lock burglary-resisting system |
| CN110211349A (en) * | 2019-06-27 | 2019-09-06 | 杨晓艺 | A kind of smart home entrance guard security system based on ZigBee |
| CN110670967A (en) * | 2019-10-10 | 2020-01-10 | 重庆电子工程职业学院 | Intelligent home security lock based on Internet of things technology |
| CN110905290A (en) * | 2019-10-30 | 2020-03-24 | 深圳市亿联智能有限公司 | Hardware circuit capable of avoiding unlocking of Tesla coil |
| CN111127705A (en) * | 2019-11-21 | 2020-05-08 | 广东名门锁业有限公司 | Intelligent door lock capable of actively preventing electromagnetic interference |
| CN110837018A (en) * | 2019-11-26 | 2020-02-25 | 北京智慧云测信息技术有限公司 | Anti-electromagnetic interference detection system of intelligent door lock |
| CN111105533A (en) * | 2019-12-20 | 2020-05-05 | 珠海格力电器股份有限公司 | Unlocking control method and device of intelligent door lock |
| CN111429616A (en) * | 2020-02-20 | 2020-07-17 | 珠海格力电器股份有限公司 | Intelligent door lock control method and device, electronic equipment and readable storage medium |
| CN111340983A (en) * | 2020-02-21 | 2020-06-26 | 德施曼机电（中国）有限公司 | Intelligent lock verification system and method for preventing Tesla coil from being opened |
| CN111340983B (en) * | 2020-02-21 | 2022-02-11 | 德施曼机电（中国）有限公司 | Intelligent lock verification system and method for preventing Tesla coil from being opened |
| CN111719954A (en) * | 2020-06-28 | 2020-09-29 | 珠海格力电器股份有限公司 | Intelligent lock anti-interference method and intelligent lock |
| CN111719954B (en) * | 2020-06-28 | 2021-08-20 | 珠海格力电器股份有限公司 | Intelligent lock anti-interference method and intelligent lock |
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Application publication date: 20190226 |