CN102747869A - Electronic key - Google Patents
Electronic key Download PDFInfo
- Publication number
- CN102747869A CN102747869A CN2012102614649A CN201210261464A CN102747869A CN 102747869 A CN102747869 A CN 102747869A CN 2012102614649 A CN2012102614649 A CN 2012102614649A CN 201210261464 A CN201210261464 A CN 201210261464A CN 102747869 A CN102747869 A CN 102747869A
- Authority
- CN
- China
- Prior art keywords
- unit
- microprocessor
- electron key
- release
- shell
- 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.)
- Granted
Links
Images
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The invention relates to an electronic key which comprises a circuit control unit and an unlocking unit. The circuit control unit is provided with a display unit, a keying unit, a storage unit and a power management unit which are respectively connected with a microprocessor. A coil output unit is in input connection with the microprocessor through a signal receiving unit, the microprocessor is in output connection with the coil output unit through a power amplifying unit, and the coil output unit is provided with a transmitting coil for transmitting signals. The electronic key adopts the transmitting coil to transmit communication data and supply power to a lock body, and a key head is not contacted with the lock body, so that various disadvantages caused by mutual contact are overcome. In addition, by arranging the electronic key, one electronic key can authorize and shield multiple assigned lock bodies, can effectively prevent illegal unlocking behaviors including imposed pulling and rotation to an unlocking shaft and the like through an anti-pulling spring and a relevant structure and has good anti-theft effect.
Description
Technical field
The present invention relates to electron key.
Background technology
The mode that traditional many lockset management are adopted at present has: management one to one (the corresponding lock of key) and one-to-many management (corresponding many locks of key, promptly so-called " logical unblanking ").Managing one to one when the many situation of management lockset quantity needs administrative staff to carry many keys, so we usually can see that administrative staff hold at least more than ten up to a hundred key chain at most, uses and manages all very inconvenient.One-to-many management (logical unblanking) has been used in management for ease afterwards again.A key is used for managing many lockset; And the problem of bringing is because a key can be driven a lot of locks; If key is stolen, lose, manage inefficacy, all can cause its all corresponding locksets all possibly have by unauthorized situation about opening, cause serious management hidden danger.Along with development of science and technology, the electric control lock that adopts smart card to unblank has appearred again.Though this lockset has the function that can carry out many lock managements; But big because of the volume of lock body, need wiring, cost height, complex structure, can only be used in that convenience such as indoor place with good conditionsi connects up and the environment good condition under use, do not have compliance widely.
Also occurred a kind of mode of unblanking through the electronic authorization key in recent years and managed the pure mechanical lock of most amounts, but this technology does not possess electronic code in the lock, and the lockset of being managed is all used with a kind of mechanical coding, safety is relatively poor.And these existing locksets can't lock body set inside self at the appointed time section can an appointed key or many keys open, such as the lock of some occasion time period that can only be on duty designated key operated; In the time of also can't changing in key holder's the authority of opening the door; Change the authority of opening the door of key, change such as personnel department, the door that allows out before some can not be opened again; The door that can not open before some such as can open at situation, and existing lockset can't adapt to such variation.
Developed a kind of passive electronic lock at present abroad, do not had power supply in the lock body, installation and design such as need not connect up has power supply in the key.Lock body relies on contact electrode to contact with the contact electrode of key, and key is supplied power to lock body.But this mode is because adopt contact power supply and communication; And the contact is many at high humidity, dust, salt fog heavily waits and occurs situation such as corrosion, oxidation, incrustation in the environment easily; Produce the problem of loose contact; And in containing the environment of flammable explosive gas, use, may produce electric spark because of loose contact and cause the accident.
Summary of the invention
The invention provides a kind of electron key, make that lockset is many at high humidity, dust, salt fog heavily waits when using in the adverse circumstances and can not produce the situation of loose contact, also can in containing the environment of flammable explosive gas, not use and cause potential safety hazard.
Electron key of the present invention; Comprise circuit control unit and the lock unit of separating that receives said circuit control unit control; In circuit control unit, have the display unit, push-button unit, memory cell and the PMU that are connected with microprocessor respectively; The coil output unit is connected with said microprocessor input through signal receiving unit; Microprocessor is exported with said coil output unit through power amplifier unit and is connected, and has the transmitting coil that is used to transmit in the described coil output unit.Wherein the model of microprocessor is a MSP420 series (like MSP430F169), or PIC series (like PIC18F452) is all applicable.Electron key of the present invention has adopted transmitting coil and corresponding lock body to carry out communication data and has supplied power alternately and to lock body.When electron key with after corresponding lock body carries out data verification through transmitting coil, electron key judges that lock body is legal, through transmitting coil lock body is supplied power again, the internal circuit that makes lock body is to the lock body release.Because key bit does not contact with lock body, therefore avoided producing various drawbacks because of the two contact.Through setting, make an electron key authorize or to shield simultaneously to a plurality of lock bodies of appointment to electron key.
Further; Comprise shell and latch release shaft in the lock unit described separating, said latch release shaft is provided with a release tooth, and said latch release shaft is rotatable to be arranged in the said shell; Offer the release breach on the said shell; Said release breach is positioned on the rotational trajectory of said axle release tooth, and the width of said release breach is not less than said axle release tooth, and the length of said release breach is not less than the distribution length of said axle release tooth on said latch release shaft; Unlocking motor be arranged in the said shell with circuit control unit in microprocessor be connected, and the rotating shaft of unlocking motor links to each other with said latch release shaft.
On the basis of said structure, also comprise the anti-spring of dialling, the said anti-spring of dialling is arranged in the said shell, and said anti-two ends of dialling spring link to each other with the rotating shaft of said unlocking motor respectively at latch release shaft.
Further, also comprise controller, said controller is arranged in the said shell, and said unlocking motor is controlled by said controller.
Further, said shell is provided with the release tooth.
Because the rotatable setting of latch release shaft in the enclosure; Therefore when unblanking, must axle release tooth spiral be forwarded to and the release indentation, there; When only unblanking, just can use the axle release tooth on the latch release shaft like this; And be to hide in the enclosure at the release tooth of axle on the latch release shaft at ordinary times, receive the protection of shell, so just avoided an axle release tooth to damage.Unlocking motor, anti-spring and the controller dialled can also be set in key, utilize controller identification external information, thereby the control unlocking motor rotate; When external information does not meet, then can not rotate latch release shaft, under the situation of key loss, still play certain antitheft effect like this; Simultaneously; Dialling by force under the situation of changeing latch release shaft, the anti-spring of dialling can utilize elastic force that latch release shaft is revert to original position, and the person dials the commentaries on classics latch release shaft by force so just to have prevented to steal the key.
Further; Signal receiving unit in the said circuit control unit comprises low speed signal receiving element and the high speed signal receiving element that is connected with said coil output unit respectively; Wherein has amplifier in the high speed signal receiving element; The positive pole of amplifier is connected with the coil output unit, and the output of amplifier is connected with said microprocessor.The low speed signal receiving element is used for electron key and lock body carries out communication, and the high speed signal receiving element is used for equipment such as electron key and computer and carries out communication, electron key is carried out the setting of related data.The circuit structure of low speed signal receiving element can be similar or identical with the circuit structure of traditional RFID (electronic tag).
Concrete; The input of the transmitting coil of said circuit control unit is connected with breakover element through relay, and adhesive or disconnection through the breakover element control relay make transmitting coil carry out the signal transmission with low speed signal receiving element or high speed signal receiving element respectively.
Preferably, described breakover element is a triode, also can be other element with identical function, like FET etc.
Preferably, microprocessor also is connected with phonation unit, and the various states in communication are carried out auditory tone cues.
Electron key of the present invention has adopted transmitting coil and lock body to carry out contactless communication and power supply; Make electron key can be many at high humidity, dust, salt fog heavily waits situation such as can not producing loose contact when using in the adverse circumstances, stopped the potential safety hazard of in containing the environment of flammable explosive gas, using.Can effectively prevent to dial by force the illegal release behavior such as unblank of commentaries on classics latch release shaft through anti-spring and the dependency structure dialled simultaneously, play good antitheft effect.
Below in conjunction with the specific embodiment, foregoing of the present invention is remake further detailed description by the accompanying drawing illustrated embodiment.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following instance.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is the structured flowchart of the circuit control unit of electron key of the present invention.
Fig. 2 is the coil output unit of Fig. 1 and the circuit diagram of signal receiving unit.
Fig. 3 is the perspective view of separating lock unit of electron key of the present invention.
Fig. 4 partly cuts open sketch map for Fig. 3's.
Fig. 5 is the front view of Fig. 3.
Fig. 6 is the make zero OOK coding/decoding waveform of electron key of the present invention when high-speed data communications.
The specific embodiment
Electron key of the present invention; Comprise circuit control unit and the lock unit of separating that receives said circuit control unit control; It is as shown in Figure 1 that in circuit control unit, to have be display unit, push-button unit, memory cell, phonation unit and the PMU that MSP430F169 or the microprocessor of PIC18F452 are connected with model respectively; The coil output unit is connected with said microprocessor input through signal receiving unit; Microprocessor is exported with said coil output unit through power amplifier unit and is connected, and has the transmitting coil that is used to transmit in the described coil output unit.Wherein display unit is used to show various information, like the state of electron key, content etc. is set; Push-button unit is used for electron key is carried out the corresponding setting input; Cell stores has the various canned datas that need; Transmitting coil is used for that lock body is carried out communication data and supplies power alternately and to lock body.When electron key with after corresponding lock body carries out data verification through transmitting coil, electron key judges that lock body is legal, through transmitting coil lock body is supplied power again, the internal circuit that makes lock body is to the lock body release; Generating unit can carry out auditory tone cues to the various states of electron key; The electric weight supply of above-mentioned each unit is all managed by PMU.
Have low speed signal receiving element and the high speed signal receiving element that is connected with said coil output unit respectively at signal receiving unit.The low speed signal receiving element is used for electron key and lock body carries out communication, and its circuit structure can be similar or identical with the circuit structure of traditional RFID (electronic tag).As shown in Figure 2, have amplifier U9 in the high speed signal receiving element, the positive pole of amplifier U9 is connected with the transmitting coil L1 of coil output unit, and the output of amplifier U9 is connected with described microprocessor.The high speed signal receiving element is used for equipment such as electron key and computer and carries out communication, electron key is carried out the setting of related data.In the coil output unit; The input of transmitting coil L1 is connected with the breakover element Q0 of audion through relay R L1, and adhesive or disconnection through breakover element Q0 control relay RL1 make transmitting coil L1 carry out the signal transmission with low speed signal receiving element or high speed signal receiving element respectively.
As shown in Figure 3, in separating lock unit, have shell 6, latch release shaft 1 and unlocking motor 3.Said latch release shaft 1 is provided with a release tooth 2; Said latch release shaft 1 rotatable being arranged in the said shell 6; Offer release breach 4 on the said shell 6; Said release breach 4 is positioned on the rotational trajectory of said axle release tooth 2, and the width of said release breach 4 is not less than said axle release tooth 2, and the length of said release breach 4 is not less than the distribution length of said axle release tooth 2 on said latch release shaft 1.Unlocking motor 3 is arranged in the said shell 6 and through controller and controls, and said controller is connected with microprocessor in the circuit control unit, and the rotating shaft of unlocking motor 3 links to each other with said latch release shaft 1.Unlocking motor 3 provides electric energy through the battery that is arranged in the shell 6.When unblanking, after circuit control unit is judged as legal unlocking program, can make unlocking motor 3 rotate latch release shaft 1 like this, thereby make axle release tooth 2 aim at release breach 4, thereby realize unblanking through microprocessor and controller.Latch release shaft 1 can cooperate direct and said shell 6 formation to be rotatably assorted through bearing or axis hole; Latch release shaft 1 can rotate freely after in being installed to shell 6 like this; A limited block is set in shell 6 usually; Make latch release shaft 1 can only rotate to certain position, i.e. axle release tooth 2 positions over against release breach 4 make things convenient for fast rotational to put in place like this.When not using key at ordinary times, can make axle release tooth 2 be hidden in the shell 6 latch release shaft 1 rotation, whole like this key just can not spill a release tooth 2; When needs used, rotation latch release shaft 1 made axle release tooth 2 be right against release breach 4, thereby makes axle release tooth 2 spill, and so just can be complementary with the coding of lock, thereby realizes unblanking.Being provided with like this can avoid a release tooth 2 to spill; Avoid a release tooth 2 wearing and tearing; Can utilize simultaneously some identification mechanisms to control latch release shaft 1 rotation, even for example fingerprint, password, electronic identity and so on are key loss like this; The person of picking up also can't rotate latch release shaft 1 through identification mechanism, has played anti-theft feature to a certain extent.
In order to prevent to stir latch release shaft 1 from release breach 4, as shown in Figure 4, in separating lock unit, also include the anti-spring 5 of dialling.The said anti-spring 5 of dialling is arranged in the said shell 6, and said anti-two ends of dialling spring 5 link to each other respectively at the rotating shaft of latch release shaft 1 with said unlocking motor 3.Rotate latch release shaft 1 at needs, start unlocking motor 3, unlocking motor 3 drives anti-group spring 5 and rotates, and the anti-spring 5 of dialling drives latch release shaft 1 rotation.After key was provided with identification mechanism, other people were if stir latch release shaft 1 through release breach 4, then latch release shaft 1 is stirred put in place after; In case when being inserted into key in the lock; The anti-spring 5 of dialling loses constraint, and then the self-recovery original state makes latch release shaft 1 also restore to the original state; So just prevent manually to stir latch release shaft 1 and realized unblanking, played certain antitheft effect.
As shown in Figure 5, on shell 6, also be provided with release tooth 7.Release tooth 7 on the shell 6 is combined with the axle release tooth 2 on the latch release shaft 1, thereby is complementary with the coding of locking, and realizes the unlocking function of electron key jointly.
It is that lock body provides electric energy communication is connected with bi-directional half-duplex that low speed energy supply communication mode in the circuit control unit is mainly used in electron key.The microprocessor of electron key output high level makes the breakover element Q0 conducting of audion under low speed energy supply communication mode; Relay R L1 adhesive; Resonant capacitance C50 and transmitting coil L1 satisfy the condition of resonance that frequency is f1, and microprocessor output high level makes PMU output stablizing VDD power supply.The another pin output duty cycle of microprocessor be 50% and frequency be the PWM square wave of f1 outputs to transmitting coil L1 and resonant capacitance C50 through power amplifier unit coil resonance loop.When the resonant frequency coupling of the resonant frequency of circuit in the lock body and electron key, lock body will induce enough electric energy and carry out work.Feedback signal is fed back to the transmitting coil L1 resonant capacitor C 50 of electron key coil output unit when lock body through electromagnetic induction; Through low speed signal receiving element LPF, amplification ratio demodulates the reset answer data after and delivers to and carry out computing, identification in the microprocessor.When the non-appointment lock body of recognition result, repeat above process blanking time behind the t1.(wherein the f1 representative ' 1 ' through the 2FSK coding from microprocessor output when recognition result meets the appointment lock body; F0 representative ' 0 '; Both frequency differences are Δ f) the director data power amplifier unit of flowing through amplify; Deliver to the coil output unit and send to lock body through electromagnetic induction, lock body feeds back to main control end through the above 2ASK coded system again.Use above-mentioned up 2ASK modulation sectional drawing, two-way data communication is carried out in descending 2FSK modulation, because the coil L1 of main control end output can not be interrupted, just the converting electric power of frequency or amplitude will be constant during this two-way data communication.
The high speed communication pattern is mainly used between electron key first and electron key second or electron key and PC/ smart machine carries out high-speed bidirectional half-duplex data communication, and common this communication is used for electron key is imported or corresponding setting.Its communication speed can reach 57600～460800bps (bits per second), can reach high communication handling capacity.
Microprocessor output low level as the electron key first of sending under high speed energy supply communication mode makes the conducting of Q0 triode; Relay R L1 discharges; The resonant tank of resonant capacitance C50 and transmitting coil L1 breaks off and loses condition of resonance, and transmitting coil L1, resistance R 79 and capacitor C 47 form the radio circuit of low time constant under this state.Microprocessor output high level makes PMU output VDD power supply, and other pin output low level of microprocessor gets into and prepares accepting state.The microprocessor output duty cycle is that 0.1875 the OOK encoded data stream that makes zero (high level active data stream) outputs to the transmitting coil L1 of coil output unit and the formation wire loop of resistance R 79 and capacitor C 47 through power amplifier unit when sending data.The relevant pin recovery low level that data are sent the completion microprocessor is effective, gets into accepting state.
Also get into the preparation accepting state as the electron key second that receives by above-mentioned flow process; When receiving equipment during near the transmitting coil L1 of the transmitting apparatus that sends data; The waveform that the transmitting coil L1 of receiving equipment is similar with transmitting apparatus because of electromagnetic induction produces amplifies the OOK encoded data stream that makes zero that restores transmitting apparatus through the filtering of high speed signal receiving element, the entering microprocessor analyzing and processing of decoding; Reply the OOK encoded data stream that makes zero and export, get back to transmitting apparatus from microprocessor.
Use the above flow process can realize that the Physical layer dutycycle is 0.1875 the OOK coding/decoding half-duplex high-speed communication of making zero.Because data flow output high level pulsewidth very narrow (dutycycle is very low), so power consumption is very low.
As shown in Figure 6, dutycycle is 0.1875 the OOK coding/decoding waveform that makes zero when high-speed data communications, as can be seen from the figure, and in the coding waveforms:
Send 16 frequencys multiplication of data flow code check during BITCLK.
TX is for sending the preceding waveform of data stream encoding.
TXOUT is 0.1875 the OOK coding back waveform that makes zero through dutycycle for the transmission data.
In the decode waveform:
Treat 16 frequencys multiplication of receiving data stream code check during BITCLK.
RXIN is that the process dutycycle received is 0.1875 the OOK coding back waveform that makes zero.
RX is 0.1875 the OOK decoding back data stream encoding waveform that makes zero for the process dutycycle.
Hence one can see that, and electron key of the present invention has adopted transmitting coil to launch communication data and to the lock body power supply, key bit does not contact with lock body, has avoided thus producing various drawbacks because of the two contact.Through setting, make an electron key authorize or to shield simultaneously to a plurality of lock bodies of appointment to electron key.And can effectively prevent to dial by force the illegal release behavior such as unblank of commentaries on classics latch release shaft through anti-spring and the dependency structure dialled, play good antitheft effect.
Claims (9)
1. electron key; Comprise circuit control unit and the lock unit of separating that receives said circuit control unit control; In circuit control unit, have the display unit, push-button unit, memory cell and the PMU that are connected with microprocessor respectively; It is characterized by: the coil output unit is connected with said microprocessor input through signal receiving unit; Microprocessor is exported with said coil output unit through power amplifier unit and is connected, and has the transmitting coil that is used to transmit in the described coil output unit.
2. electron key as claimed in claim 1; It is characterized by: comprise shell (6), latch release shaft (1) and unlocking motor (3) in the lock unit described separating; Said latch release shaft (1) is provided with a release tooth (2); Said latch release shaft (1) is rotatable to be arranged in the said shell (6), offers release breach (4) on the said shell (6), and said release breach (4) is positioned on the rotational trajectory of said axle release tooth (2); The width of said release breach (4) is not less than said axle release tooth (2), and the length of said release breach (4) is not less than the distribution length of said axle release tooth (2) on said latch release shaft (1); Unlocking motor (3) be arranged in the said shell (6) with circuit control unit in microprocessor be connected, and the rotating shaft of unlocking motor (3) links to each other with said latch release shaft (1).
3. electron key as claimed in claim 2; It is characterized by: separate to have in the lock unit and prevent dialling spring (5); The said anti-spring (5) of dialling is arranged in the said shell (6), and said anti-two ends of dialling spring (5) link to each other respectively at the rotating shaft of latch release shaft (1) with said unlocking motor (3).
4. electron key as claimed in claim 3 is characterized by: separate and also include controller in the lock unit, said controller is arranged in the said shell (6), and described unlocking motor (3) is controlled by said controller.
5. electron key as claimed in claim 4 is characterized by: described shell (6) is provided with release tooth (7).
6. like the described electron key of one of claim 1 to 5; It is characterized by: the signal receiving unit in the said circuit control unit comprises low speed signal receiving element and the high speed signal receiving element that is connected with said coil output unit respectively; Wherein has amplifier in the high speed signal receiving element; The positive pole of amplifier is connected with the coil output unit, and the output of amplifier is connected with said microprocessor.
7. like the described electron key of one of claim 1 to 5, it is characterized by: the input of the transmitting coil of said circuit control unit is connected with breakover element through relay.
8. electron key as claimed in claim 7 is characterized by: described breakover element is a triode.
9. like the described electron key of one of claim 1 to 5, it is characterized by: microprocessor also is connected with phonation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210261464.9A CN102747869B (en) | 2012-07-26 | 2012-07-26 | Electron key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210261464.9A CN102747869B (en) | 2012-07-26 | 2012-07-26 | Electron key |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102747869A true CN102747869A (en) | 2012-10-24 |
| CN102747869B CN102747869B (en) | 2016-03-23 |
Family
ID=47028332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210261464.9A Active CN102747869B (en) | 2012-07-26 | 2012-07-26 | Electron key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102747869B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950914A (en) * | 2004-05-04 | 2007-04-18 | 皇家飞利浦电子股份有限公司 | A wireless powering device, an energizable load, a wireless system and a method for a wireless energy transfer |
| JP2008199787A (en) * | 2007-02-13 | 2008-08-28 | Miwa Lock Co Ltd | Remote controller |
| CN101629463A (en) * | 2009-02-22 | 2010-01-20 | 余义伦 | Remote control lock without power source |
| CN201666040U (en) * | 2010-01-25 | 2010-12-08 | 方荣光 | Key of optical coded lock |
| CN102041925A (en) * | 2010-02-11 | 2011-05-04 | 珠海理想科技有限公司 | Electrically controlled intelligent key for magnetically coded lock |
| CN102312617A (en) * | 2011-09-15 | 2012-01-11 | 吴斐 | Power-supply -free electronic lock and corresponding unlocking hand-held machine device |
| CN202788226U (en) * | 2012-07-26 | 2013-03-13 | 成都泰然科技有限公司 | Electronic key |
-
2012
- 2012-07-26 CN CN201210261464.9A patent/CN102747869B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950914A (en) * | 2004-05-04 | 2007-04-18 | 皇家飞利浦电子股份有限公司 | A wireless powering device, an energizable load, a wireless system and a method for a wireless energy transfer |
| JP2008199787A (en) * | 2007-02-13 | 2008-08-28 | Miwa Lock Co Ltd | Remote controller |
| CN101629463A (en) * | 2009-02-22 | 2010-01-20 | 余义伦 | Remote control lock without power source |
| CN201666040U (en) * | 2010-01-25 | 2010-12-08 | 方荣光 | Key of optical coded lock |
| CN102041925A (en) * | 2010-02-11 | 2011-05-04 | 珠海理想科技有限公司 | Electrically controlled intelligent key for magnetically coded lock |
| CN102312617A (en) * | 2011-09-15 | 2012-01-11 | 吴斐 | Power-supply -free electronic lock and corresponding unlocking hand-held machine device |
| CN202788226U (en) * | 2012-07-26 | 2013-03-13 | 成都泰然科技有限公司 | Electronic key |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102747869B (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102800142B (en) | Intelligent lock, intelligent key and bidirectional interaction control method thereof | |
| CN105336029A (en) | IoT (Internet of Things) based intelligent lock system and method | |
| CN109184361B (en) | Door lock with high safety and working method thereof | |
| CN104299308A (en) | Misoperation preventing and lock group managing system and method for electric machine room | |
| CN103321490A (en) | Anti-theft system of non-contact passive electronic lock for distributed equipment | |
| CN101886513A (en) | Intelligent security door system | |
| CN203588359U (en) | Five-prevention remote intelligent unlocking management system | |
| CN202788226U (en) | Electronic key | |
| CN104392525A (en) | Intelligent lock system | |
| CN104240339A (en) | Anti-theft system and method for door lock | |
| CN102467774B (en) | There is the cryptographic system of anti-side recording function | |
| CN207892381U (en) | Based on the intelligent lock system for referring to hand vein recognition | |
| CN202148739U (en) | Unlocking management system | |
| CN202731460U (en) | Electronic lock | |
| CN101182743A (en) | Intelligent puzzle lock and safe thereof | |
| CN203746197U (en) | Antitheft system used for door lock | |
| CN104751551A (en) | Main control panel for electronic clock, control circuit of electronic lock, system and method | |
| CN103914895B (en) | A kind of wireless sensing Internet of Things lock and method for unlocking thereof | |
| CN209413514U (en) | Door lock with high security | |
| CN106761014B (en) | A kind of intelligence electromechanical double-control electronic lock | |
| CN202331600U (en) | Intelligent access control management system with two-way communication and multilayer authorized approval | |
| CN111028396A (en) | Remote positioning logistics coded lock | |
| CN202181768U (en) | Locking device | |
| CN102817509A (en) | Intelligent lock device | |
| CN102747869A (en) | Electronic key |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |