CN207780869U - Door lock - Google Patents

Abstract

The utility model discloses a kind of door lock, door lock includes that take power supply module and main control module, main control module include microprocessor and unlocking module to NFC, and unlocking module is connect with microprocessor；It includes NFC reception antennas, NFC Energy extractions circuit and power circuit that NFC, which takes power supply module, and NFC reception antennas, NFC Energy extractions circuit and power circuit are sequentially connected in series, and power circuit is connect with main control module.The utility model makes door lock not need battery, by NFC directly use mobile device energy power, to open door lock, avoid when in door lock lithium ion battery or dry cell electricity exhaust after, user do not open door lock the case where occur.And due to not needing battery in door lock, reduce the cost of manufacture of door lock.Further, since door lock does not have battery, door lock battery drain is also avoided, situations such as charging of door lock battery is on fire occurs.

Description

Door lock

Technical field

The utility model is related to door lock technical field more particularly to a kind of door locks.

Background technology

Currently used intelligent door lock, most of be powered with battery.Battery used in intelligent door lock is generally More piece dry cell or single lithium battery.After the electricity of battery exhausts, need to re-replace battery.If user is outside at this time Face can not then replace dry cell, and can not unlock.Needing USB at this time, (Universal Serial Bus, general serial are total Line) charger or 9V direct currents give door lock charging, it could unlock.If user does not carry USB charger or DC charging Device, then user still can not open door lock.And the dry cell that uses of intelligent door lock or lithium ion battery are generally all placed on Above door lock, the reserved space for placing dry cell or lithium ion battery therefore, on intelligent door lock is needed, intelligent door lock body is caused Product increases, and improves the cost of manufacture of intelligent door lock.

Utility model content

The main purpose of the utility model is to provide a kind of door locks, it is intended to solve lithium ion battery in existing door lock or After person's dry cell electricity exhausts, user does not open door lock, and the technical problem that door lock cost of manufacture is high.

To achieve the above object, the utility model provides a kind of door lock, and the door lock includes near field communication (NFC) NFC takes power supply module and main control module, and the main control module includes microprocessor and unlocking module, the unlocking module with it is described Microprocessor connects；

It includes NFC reception antennas, NFC Energy extractions circuit and power circuit that the NFC, which takes power supply module, and the NFC connects It receives antenna, NFC Energy extractions circuit and power circuit to be sequentially connected in series, the power circuit is connect with the main control module.

Preferably, the unlocking module is Bluetooth Low Energy BLE modules or ZigBee protocol ZigBee module.

Preferably, it further includes regulator circuit that the NFC, which takes power supply module, the NFC Energy extractions circuit, voltage stabilizing electricity Road and the power circuit are sequentially connected in series.

Preferably, the main control module further includes fingerprint input module, the fingerprint input module and the microprocessor Connection, the fingerprint input module connects fingerprint input panel, to detect user fingerprints.

Preferably, the main control module further includes the touch key-press module being connect with the microprocessor, and the touch is pressed Key module is connect with touch panel.

Preferably, the touch key-press module uses 12 road capacitance touch chips.

Preferably, the main control module further includes voice playing module, the voice playing module and the microprocessor Connection, the voice playing module is connect with loud speaker, for exporting voice messaging.

Preferably, the main control module further includes the safety chip being connect with the microprocessor.

Preferably, the microprocessor is connect with motor.

The utility model discloses a kind of door lock, the door lock includes that near field communication (NFC) NFC takes power supply module And main control module, the main control module include microprocessor and unlocking module, the unlocking module is connect with the microprocessor； It includes NFC reception antennas, NFC Energy extractions circuit and power circuit that the NFC, which takes power supply module, the NFC reception antennas, NFC Energy extractions circuit and power circuit are sequentially connected in series, and the power circuit is connect with the main control module.NFC Energy extractions Circuit by NFC reception antennas extract carry NFC function mobile device energy give door lock power, when door lock after the power is turned on, open Lock module executes unlocking operation according to unlocking instruction.So that door lock is not needed battery, the energy of mobile device is directly used by NFC Power supply, to open door lock, avoid when in door lock lithium ion battery or dry cell electricity exhaust after, user does not open door lock The case where occur.It further,, also need not be in door lock during making door lock due to not needing battery in door lock Upper reserved space placing battery, reduces the cost of manufacture of door lock.Further, it since door lock does not have battery, also avoids Situations such as door lock battery drain, the charging of door lock battery is on fire, occurs.

Description of the drawings

Fig. 1 is the structural schematic diagram of the first embodiment of the utility model door lock；

Fig. 2 is the structural schematic diagram of the second embodiment of the utility model door lock；

Fig. 3 is the structural schematic diagram of the 3rd embodiment of the utility model door lock；

Fig. 4 is the structural schematic diagram of the fourth embodiment of the utility model door lock.

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific implementation mode

It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this Utility model.

The solution of the utility model embodiment is mainly：The door lock includes that near field communication (NFC) NFC takes Power supply module 20 and main control module 10, the main control module 10 include microprocessor 11 and unlocking module 12, the unlocking module 12 connect with the microprocessor 11；It includes NFC reception antennas 23, NFC Energy extractions circuit 22 that the NFC, which takes power supply module 20, With power circuit 21, the NFC reception antennas 23, NFC Energy extractions circuit 22 and power circuit 21 are sequentially connected in series, the power supply Circuit 21 is connect with the main control module 10.It is exhausted with solving lithium ion battery in existing door lock or dry cell electricity Afterwards, user does not open door lock, and the problem that door lock cost of manufacture is high.

Referring to Fig.1, Fig. 1 is the structural schematic diagram of the first embodiment of the utility model door lock.Door lock includes NFC (Near Field Communication, near field communication (NFC)) power supply module 20 and main control module 10 are taken, NFC takes power supply module 20 and main control module 10 connect, main control module 10 includes microprocessor 11 and unlocking module 12, unlocking module 12 and microprocessor 11 connections；It includes NFC reception antennas 23, NFC Energy extractions circuit 22 and power circuit 21 that NFC, which takes power supply module 20, and NFC is received Antenna 23, NFC Energy extractions circuit 22 and power circuit 21 are sequentially connected in series, and power circuit 21 is connect with main control module 10.

NFC reception antennas 23 are operated in 13.56MHz (Mega Hertz, megahertz) frequency range, the number of NFC reception antennas 23 It can be 106kbps (bit rate), 212kbps or 424kbps according to transmission rate, recognize reading distance in most applications, do not surpass Cross 10 centimetres.NFC reception antennas 23 have following features：

1. supporting ISO (International Organization for Standardization, International standardization group Knit)/IEC (International Electrotechnical Commission, International Electrotechnical Commission) 14443TypeA and MIFARE＆reg communication protocols；

2. reaching the reading/writing distance of 100mm (millimeter), reading/writing distance depends on size and the modulation of antenna；

3. the read-write of MF1xxS20, MF1xxS70 and MF1xxS50 is supported to encrypt；

4. supporting ISO 14443A, the up to communication of 848kbit/s transmission rates；

5. the host interface supported：The up to SPI of 10Mbit/s (Serial Peripheral Interface, serially Peripheral Interface) interface.

Power circuit 21 is a kind of LDO (low dropout regulator, low pressure difference linear voltage regulator), for door Each circuit and the module work of lock provide power supply.

NFC Energy extractions circuit 22 is used to extract the energy for the mobile device for carrying NFC function.In the embodiment of the present invention In, the structure of MAC (Media Access Control, medium access control) layer by changing NFC, and in radio frequency, day Line, low-power consumption, zero energy configuration etc. optimize, to increase the reception power of NFC Energy extractions circuit 22.Specifically, pass through Low-power Technology, antenna matching technique etc. optimize.It can be obtained by experiment, the reception power of NFC Energy extractions circuit 22 can Increase to 60mW (megawatt) or more.

NFC reception antennas 23, which are used to receive, carries the energy that the mobile device of NFC function is sent, and the energy that will be received It is sent to NFC Energy extractions circuit 22, received institute's energy is sent to power circuit 21 by NFC Energy extractions circuit 22, Power circuit 21 is powered by the energy received to door lock.Mobile device is the terminal for having NFC wireless charging functions, is such as taken Mobile phone with NFC function, the iPad etc. with NFC function.

MCU (Microcontroller Unit, microprocessor 11) is used to control the operation of entire door-locking system.In this reality It applies in example, STM32F205 microcontrollers can be used in microprocessor 11, and in other embodiments, microprocessor 11 can also be used other Chip, this will not be repeated here.

Unlocking module 12 is used to drive the lock body of Door lock according to the unlocking instruction that mobile device is sent, to open door Lock.

Specifically, if mobile device is less than pre-determined distance at a distance from door lock, door lock is received by NFC reception antennas 23 The energy of mobile device.Pre-determined distance is determined by the size and modulation system of NFC reception antennas 23.It is understood that when moving When dynamic equipment is more than or equal to pre-determined distance at a distance from door lock, the NFC reception antennas 23 of door lock do not receive mobile device Energy.

After the energy that door lock is extracted by NFC reception antennas 23 is powered, i.e., door lock after the power is turned on, the unlocking module 12 of door lock It detects whether to detect unlocking cipher.After unlocking module 12 detects unlocking cipher, unlocking instruction is triggered according to unlocking cipher, To open door lock.

Further, unlocking module 12 can be BLE (Bluetooth Low Energy, Bluetooth Low Energy) modules or purple Bee agreement ZigBee module.In some specific embodiment, BLE modules and ZigBee module can exist simultaneously in door lock, that is, open Lock module 12 includes BLE modules and ZigBee module, at this point, user can as needed select through BLE modules, or is passed through ZigBee module receives unlocking cipher.When unlocking module 12 includes BLE modules and ZigBee module, BLE modules and ZigBee Module is connect with microprocessor 11 respectively.

When unlocking module 12 be BLE modules when, when door lock after the power is turned on, mobile device starts its bluetooth module.Door lock detects Whether its BLE module did not established communication connection with the bluetooth module of mobile device.If BLE modules were not established with bluetooth module Communication connection, door lock then triggers matched order, and is matched BLE modules with bluetooth module according to the matched order.Work as BLE After module and bluetooth module successful matching, BLE modules establish communication connection with bluetooth module.It should be noted that bluetooth module It can actively be triggered by door lock with the matched order during BLE module pairs, also can actively be triggered by mobile device.If pairing refers to Enable by door lock actively trigger, then when door lock after the power is turned on, by door lock BLE modules trigger matched order；If matched order is by moving Equipment triggers, then after mobile device is powered by its NFC function to door lock, matched order is triggered by bluetooth module.If BLE moulds Block established communication connection with bluetooth module, and door lock need not execute the matching operation of pairing BLE modules and bluetooth module again, BLE modules can establish communication and connect with bluetooth module automatically, at this point, door lock can be detected directly by the way that whether BLE modules receive The unlocking cipher that mobile terminal is sent by bluetooth module.

After bluetooth module and BLE modules establish communication connection, mobile device detect whether to detect user with door lock The unlocking cipher inputted in corresponding application program.If mobile device detects unlocking cipher, this is opened by bluetooth module Lock cipher is sent to the BLE modules of door lock.After BLE modules receive the unlocking cipher, is triggered and unlocked according to the unlocking cipher Instruction drives Door lock, to open door lock according to the unlocking instruction.Wherein, unlocking cipher include but not limited to finger-print cipher, Numerical ciphers and fingerprint sum number combinatorics on words password.

Further, whether after mobile device detects unlocking cipher, it is correct first to detect the unlocking cipher, should when confirming After unlocking cipher is correct, which is sent to the BLE modules of door lock by the bluetooth module by mobile device.When BLE moulds After block receives the unlocking cipher, first detect unlocking cipher whether correctness.After confirming that the unlocking cipher is correct, BLE modules Unlocking instruction is triggered according to the unlocking cipher, to open door lock.It avoids unlocking cipher from being tampered in transmission process, improves and pass through Unlocking cipher opens the safety of door lock.

Mobile device detects the whether correct process of unlocking cipher：If unlocking cipher input by user is answered with mobile device It is consistent with pre-stored unlocking cipher in program, then confirm that unlocking cipher is correct；If unlocking cipher input by user and movement Pre-stored unlocking cipher is inconsistent in appliance applications, then confirms unlocking cipher mistake.The BLE modules detection of door lock is opened Whether correct lock cipher process be consistent with the mobile device detection whether correct process of unlocking cipher, and this will not be repeated here.

Further, after mobile device gets unlocking cipher input by user, bluetooth module uses advance with door lock The Encryption Algorithm encryption unlocking cipher consulted, obtains encrypted unlocking cipher, and encrypted unlocking cipher is sent to The BLE modules of door lock.To improve safety of the unlocking cipher in transmission process.Encryption Algorithm includes but not limited to DES (Data Encryption Standard, data encryption standards), AES (Advanced Encryption Standard, superencipherment mark It is accurate), RSA cryptographic algorithms and MD5 (Message-Digest Algorithm 5, Message-Digest Algorithm 5).

When unlocking module 12 is ZigBee module, when door lock after the power is turned on, mobile device starts corresponding with door lock application Program prompts user to input unlocking cipher in the application program.After mobile device detects unlocking cipher input by user, The unlocking cipher is sent to server by mobile device.After server receives the unlocking cipher, whois lookup and the shifting The ZigBee module of dynamic apparatus bound, and unlocking cipher is sent to the ZigBee module bound with mobile device.When door lock After ZigBee module receives the unlocking cipher, unlocking instruction is triggered, drives Door lock to open door lock according to the unlocking instruction. It should be noted that mobile device and the ZigBee module of door lock have been bound in advance.When server receives unlocking cipher Afterwards, the unlocking cipher can be parsed, the mobile device mark of unlocking cipher carrying is obtained, is found according to the mark of the mobile device With the ZigBee module of mobile device binding.In the server, mobile device and ZigBee module mapping table have been prestored, when After obtaining mobile device mark, corresponding ZigBee module can be found by the mapping table.It is understood that movement is set Standby mark can be the packet name of mobile device or other information that can uniquely indicate the mobile device.

Further, whether just mobile device first detects unlocking cipher after it will detect unlocking cipher input by user Really, after only confirming that unlocking cipher is correct, the unlocking cipher is just encrypted, obtains encrypted unlocking cipher, and will be encrypted Unlocking cipher is sent to bound ZigBee module by server.It is understood that when unlocking module 12 is ZigBee When module, mobile device detects unlocking cipher process that is whether correct and encrypting unlocking cipher and door lock detects unlocking cipher Consistent when whether correct process and unlocking module 12 are bluetooth module, details are not described herein.

Further, when unlocking cipher mistake input by user, the exportable prompt message of mobile device prompts user defeated The password mistake entered.

The present embodiment door lock includes that NFC takes power supply module 20 and main control module 10, main control module 10 to include microprocessor 11 With unlocking module 12, unlocking module 12 is connect with microprocessor 11；It includes NFC reception antennas 23, NFC that NFC, which takes power supply module 20, Energy extraction circuit 22 and power circuit 21, NFC reception antennas 23, NFC Energy extractions circuit 22 and power circuit 21 are gone here and there successively Connection, power circuit 21 are connect with main control module 10.NFC Energy extractions circuit 22 is extracted by NFC reception antennas 23 and carries NFC work( Can mobile device energy give door lock power supply, when door lock after the power is turned on, unlocking module 12 according to unlocking instruction execute unlocking operation. So that door lock is not needed battery, directly uses the energy of mobile device to power by NFC, to open door lock, avoid when in door lock Lithium ion battery or after dry cell electricity exhausts, user do not open door lock the case where occur.Further, due in door lock Do not need battery, therefore during making door lock, also need not on door lock reserved space placing battery, reduce door lock Cost of manufacture.Further, since door lock does not have battery, door lock battery drain is also avoided, the charging of door lock battery is on fire Situations such as occur.

Further, it is the structural schematic diagram of the utility model door lock second embodiment with reference to Fig. 2, Fig. 2.

It further includes regulator circuit 24, NFC Energy extractions circuit 22, regulator circuit 24 and power supply electricity that NFC, which takes power supply module 20, Road 21 is sequentially connected in series.Regulator circuit 24 is used to stablize NFC Energy extractions circuit 22 and extracts the voltage exported after energy, is stablized Voltage afterwards, and the voltage after stabilization is sent to power circuit 21, so that power circuit 21 can export stable electricity.It can be with Understand, the voltage that NFC Energy extractions circuit 22 exports is the corresponding voltage of energy that is extracted.

The present embodiment provides stable electricity to power circuit 21, at the electricity for making supply door lock by regulator circuit 24 In stable state, avoid in door lock power supply process, due to spread of voltage, the case where reducing door lock service life, occurs, Extend the service life of door lock.

Further, it is the structural schematic diagram of the utility model door lock 3rd embodiment with reference to Fig. 3, Fig. 3.

Main control module 10 further includes fingerprint input module 13, and fingerprint input module 13 is connect with microprocessor 11, and fingerprint is defeated Enter module 13 and connect fingerprint input panel, to detect user fingerprints.When door lock after the power is turned on, user can be defeated by fingerprint input panel Enter the fingerprint that opens the door.After user inputs enabling fingerprint by fingerprint input panel, fingerprint input module 13 detects that the enabling refers to Line, and unlocking instruction is triggered by the enabling fingerprint, to open door lock.By the fingerprint input module 13, user can be in door It locks and directly inputs the fingerprint needed for opening the door, when fingerprint input by user is correct, you can open door lock.

Further, one or more finger-print cipher can also be arranged in user by fingerprint input panel, by set The finger-print cipher set is to open door lock.

Further, with reference to Fig. 3, main control module 10 further includes the touch key-press module 14 being connect with microprocessor 11, is touched Key-press module 14 is touched to connect with touch panel.When door lock after the power is turned on, user can be inputted on touch panel open the door needed for unlocking Password.It is understood that unlocking cipher at this time can be numerical ciphers.When user inputs unlocking cipher on touch panel Afterwards, the touch key-press module 14 being connect with touch panel detects unlocking cipher, unlocking instruction is triggered by unlocking cipher, to beat Door lock.In the present embodiment, 12 road capacitance touch chips can be used in touch key-press module 14, in other embodiments, The touch chip of other forms can also be used in touch key-press module 14, and details are not described herein.

Further, with reference to Fig. 3, main control module 10 further includes voice playing module 15, voice playing module 15 and Wei Chu It manages device 11 to connect, voice playing module 15 is connect with loud speaker, for exporting voice messaging.Specifically, when door lock confirmation is connect When the unlocking cipher mistake of receipts, 15 controlling loudspeaker of voice playing module of door lock exports voice messaging, prompts user password defeated Enter mistake.As received when door lock unlocking cipher mistake when, 15 controlling loudspeaker of voice playing module output " password mistake, Please re-enter " voice messaging, to prompt user to re-enter password.Or when user is when being arranged password, speech play 15 controlling loudspeaker of module exports voice messaging, prompts the length of setting password needed for user.In the present embodiment, speech play Module 15 uses WT588D-20SS intelligent sound chips, and in other embodiments, other classes can also be used in voice playing module 15 The intelligent sound chip of type, is not limited herein.

In the present embodiment, by the output of voice playing module 15 and the relevant voice messaging of current state, to prompt to use Family improves the intelligent of door lock.

Further, with reference to Fig. 3, door lock further includes NFC card reading modules 17, when door lock after the power is turned on, NFC card reading modules 17 are examined The instruction of swiping the card for whether reading corresponding contactless card surveyed.When NFC card reading modules 17, which are read, swipes the card instruction, according to brush Card instruction triggers unlocking instruction, and unlocking instruction is sent to microprocessor 11.After microprocessor 11 receives unlocking instruction, Microprocessor 11 drives Door lock, to open door lock.

Wherein, contactless card is the NFC label badge that user carries, and the door lock is opened for swiping the card in door lock.Contactless card Can be IC (integrated circuit, integrated circuit) cards or TM (Touch Memory) cards etc..

Further, it is the structural schematic diagram of the utility model door lock fourth embodiment with reference to Fig. 4, Fig. 4.

Main control module 10 further includes the safety chip 16 being connect with microprocessor 11.The safety chip 16 is close for dual lock Code carries out the operations such as hardware encryption and decryption, to ensure the safety of unlocking cipher.In the present embodiment, safety chip 16 passes through CC EAL5 level security certifications.

If the unlocking cipher received when the bluetooth module or ZigBee module of door lock is close by encrypted unlocking Code, then the safety chip of door lock decrypts the encrypted unlocking cipher using decipherment algorithm, with the unlocking cipher after being decrypted, Wherein, the decipherment algorithm is corresponding with the mobile device encryption Encryption Algorithm of unlocking cipher.Such as when mobile device uses DES algorithms When being encrypted, the safety chip of door lock is decrypted also by DES algorithms.

When unlocking cipher is arranged by connecting touch panel with touch key-press module 14 in user, safety chip can be to user Set password carries out hardware encryption, to improve the safety of unlocking cipher.

It should be noted that correctly whether operation can be executed detection unlocking cipher by safety chip, it also can be by bluetooth mould Block or ZigBee module execute, and are not limited herein.

Further, microprocessor 11 is connect with motor.Specifically, when unlocking instruction is triggered, 11 basis of microprocessor Unlocking instruction controls motor and opens door lock.It is understood that power circuit 21 is also connected with motor, to power to motor, make Motor can open door lock.

Further, door lock further includes motor driving, and motor driving connect with microprocessor 11, driven by the motor Controllable motor work.

Further, door lock further includes button doorbell, which connect with microprocessor 11.Pass through the button doorbell The resident family inside house can be prompted, has guest visiting.

Further, door lock further includes backlight, which connect with microprocessor 11.

Further, it can also be powered to door lock by way of meeting wireless charging QI standards.It is understood that passing through Other intelligence can also be applied to the method for the door lock power supply for having NFC reception antennas 23 by carrying the mobile device of NFC function In home equipment, as being applied in electric cooker, humidifier.

It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that process, method, article or device including a series of elements include not only those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this There is also other identical elements in the process of element, method, article or device.

It should be noted that the technical solution of each embodiment of the utility model can be combined with each other, but must be Basis is can be implemented as with those skilled in the art, it should when the combination of technical solution appearance is conflicting or cannot achieve People thinks that the combination of this technical solution is not present, also not within the protection domain of the requires of the utility model.

Above-mentioned the utility model embodiment serial number is for illustration only, can not represent the quality of embodiment.

It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are equally included in the patent within the scope of the utility model.

Claims (8)

1. a kind of door lock, which is characterized in that the door lock includes that near field communication (NFC) NFC takes power supply module and master control mould Block, the main control module include microprocessor and unlocking module, and the unlocking module is connect with the microprocessor；

It includes NFC reception antennas, NFC Energy extractions circuit and power circuit that the NFC, which takes power supply module, and the NFC receives day Line, NFC Energy extractions circuit and power circuit are sequentially connected in series, and the power circuit is connect with the main control module；

The unlocking module is Bluetooth Low Energy BLE modules or ZigBee protocol ZigBee module.

2. door lock as described in claim 1, which is characterized in that it further includes regulator circuit that the NFC, which takes power supply module, described NFC Energy extractions circuit, the regulator circuit and the power circuit are sequentially connected in series.

3. door lock as described in claim 1, which is characterized in that the main control module further includes fingerprint input module, the finger Line input module is connect with the microprocessor, and the fingerprint input module connects fingerprint input panel, to detect user fingerprints.

4. door lock as described in claim 1, which is characterized in that the main control module further includes being connect with the microprocessor Touch key-press module, the touch key-press module are connect with touch panel.

5. door lock as claimed in claim 4, which is characterized in that the touch key-press module uses 12 road capacitance touch cores Piece.

6. door lock as described in claim 1, which is characterized in that the main control module further includes voice playing module, institute's predicate Sound playing module is connect with the microprocessor, and the voice playing module is connect with loud speaker, for exporting voice messaging.

7. door lock as described in claim 1, which is characterized in that the main control module further includes being connect with the microprocessor Safety chip.

8. door lock as described in any one of claim 1 to 7, which is characterized in that the microprocessor is connect with motor.