CN109697768A - Intelligent lock circuit and smart lock - Google Patents
Intelligent lock circuit and smart lock Download PDFInfo
- Publication number
- CN109697768A CN109697768A CN201710986603.7A CN201710986603A CN109697768A CN 109697768 A CN109697768 A CN 109697768A CN 201710986603 A CN201710986603 A CN 201710986603A CN 109697768 A CN109697768 A CN 109697768A
- Authority
- CN
- China
- Prior art keywords
- energy
- module
- circuit
- nfc
- lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- 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
Abstract
The invention discloses a kind of intelligent lock circuit and smart lock, the intelligence lock circuit includes NFC communication module and drive module；The NFC communication module is electrically connected with the drive module；The NFC communication module includes NFC antenna, and the NFC antenna is used to acquire the electric energy in the NFC signal received；The NFC communication module is used to the electric energy that the NFC antenna acquires being transferred to the drive module；The drive module is used to execute the operation for locking and unlocking using electrical energy drive smart lock.It needs to be powered existing defect using external cell the present invention overcomes existing smart lock, gets rid of the limitation of battery, it is easy to use；Simultaneously as being not required to using battery and battery charger being arranged, so that the volume of smart lock reduces, weight saving reduces production cost.
Description
Technical field
The present invention relates to wireless communication technology field, in particular to a kind of intelligent lock circuit and smart lock.
Background technique
Smart lock has the spies such as easy to use, safe, powerful as the smart home product risen in recent years
Point.Existing smart lock is largely powered using battery, then passes through bluetooth or NFC (Near Field
Communication, near-field communication) etc. modes communicated with user mobile phone, come verify user identity carry out smart lock locking and
Unlock operation.
But existing smart lock due to volume or power consumption the problems such as, door lock can only be suitable for.It is being applied in door lock
When occasion in addition, for example, many difficulties will be encountered when small sized personal cabinet lock, suitcase lock and shared bicycle are locked.Due to
Smart lock of the type small volume itself, it is difficult to internal battery, i.e., can internal battery, but due to lock work when need to consume
A large amount of electric energy will result in battery and exhaust quickly, easily cause electricity shortage.Meanwhile pairing in advance is needed using bluetooth unlock, and
Be not suitable for the scene that shared these a large number of users of smart lock are used in conjunction with, such as shared bicycle lock, therefore these problems are greatly made
About application of the smart lock other than door lock.Smart lock product outside existing door lock is generally disposed by the volume for adding to lock greatly
Battery causes product both unsightly or inconvenient to use, and user experience is bad.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome smart lock existing in the prior art need using battery into
Row power supply, is easy to appear electricity shortage for the smart lock of small volume, smart lock biggish for volume, both unsightly or not
Conveniently, the defects of user experience is bad is, and it is an object of the present invention to provide a kind of intelligence lock circuit and smart lock.
The present invention is to solve above-mentioned technical problem by following technical proposals:
The present invention provides a kind of intelligent lock circuit, and the intelligence lock circuit includes NFC communication module and drive module；
The NFC communication module is electrically connected with the drive module；
The NFC communication module includes NFC antenna, and the NFC antenna is used to acquire the electricity in the NFC signal received
Energy；
The NFC communication module is used to the electric energy that the NFC antenna acquires being transferred to the drive module；
The drive module is used to execute the operation for locking and unlocking using electrical energy drive smart lock.
Preferably, the intelligence lock circuit further includes energy management circuit；
The energy management circuit is electrically connected with the NFC communication module and the drive module respectively；
The energy management circuit is used to receive the electric energy of the NFC communication module transmission, and received electric energy is transmitted
To the drive module.Preferably, the intelligence lock circuit further includes rectification circuit and voltage regulator circuit；
The rectification circuit is electrically connected with the NFC communication module, the voltage regulator circuit and the energy management circuit respectively
It connects；
The NFC communication module is used to receive the RF energy of the NFC energy antenna transmission and is transmitted to the rectification
Circuit；
The rectification circuit is used to the RF energy being converted into the first direct current energy, and is transmitted to the voltage regulator circuit
With the energy management circuit；
The voltage regulator circuit is used to carry out first direct current energy decompression and steady pressure treatment, is converted into the second direct current
Can, it powers to the NFC communication module and the energy management circuit；
The energy management circuit is used to first direct current energy being transferred to the drive module.
Preferably, the intelligence lock circuit further includes energy-storage module；
The energy management circuit is electrically connected with the energy-storage module, for transmitting received first direct current energy
It charges to the energy-storage module.
Preferably, the energy management circuit is used to draw the collected electric energy of the NFC antenna in the energy-storage module
When as low as first voltage threshold value, the charging to the energy-storage module is cut off.
Preferably, the energy management circuit includes charge switch, the charge switch is electrically connected with the energy-storage module,
The energy management circuit is also used to control the turn-on and turn-off of the charge switch.
Preferably, the charge switch further includes that control terminal is forbidden in charging, the charging forbids control terminal for closing by force
Break the charge switch.
Preferably, the energy management circuit includes first voltage comparator；
Two input terminals of the first voltage comparator input the voltage and described of first direct current energy respectively
The output end of one voltage threshold, the first voltage comparator is electrically connected with the charge switch, the first voltage comparator
When being higher than the first voltage threshold value for the voltage in first direct current energy, output Continuity signal to the charging is opened
It closes.
Preferably, the energy-storage module to the energy management circuit for discharging；
The energy management circuit is also used to the property of the energy-storage module being transferred to the drive module.
Preferably, the energy management circuit further includes discharge switch, the energy-storage module by the discharge switch with
The drive module electrical connection, the energy management circuit are also used to control the turn-on and turn-off of the discharge switch.
Preferably, the response time of the charge switch less than 10 μ s, and/or, the response time of the discharge switch is small
In 10 μ s.
Preferably, the energy management circuit further includes second voltage comparator；
Two input terminals of the second voltage comparator input the tank voltage and the second electricity of the energy-storage module respectively
Threshold value is pressed, the output end of the second voltage comparator is electrically connected with the discharge switch, and the second voltage comparator is used for
When the tank voltage of the energy-storage module is lower than the second voltage threshold value, by the discharge switch to the drive module
Out-put supply alarm signal.
Preferably, the energy management circuit further includes tertiary voltage comparator；
Two input terminals of the tertiary voltage comparator input the tank voltage and third electricity of the energy-storage module respectively
Threshold value is pressed, the tertiary voltage threshold value is less than the second voltage threshold value, and the tertiary voltage comparator is used in the energy storage
When the tank voltage of module is lower than the tertiary voltage threshold value, output cut-off signals to the discharge switch.
Preferably, the intelligence lock circuit further includes control module；
The control module is communicated with the NFC communication module, the energy management circuit and the drive module respectively
Connection；
The control module between the NFC communication module for carrying out data transmission；
The control module is also used to send control instruction to the drive module；
The voltage regulator circuit is electrically connected with the control module, and is the control module by second direct current energy
Power supply.
Preferably, the control module is used to carry out subscriber authentication according to the NFC signal received.
Preferably, the drive module includes drive axle；
The drive axle includes MOSFET or IGBT.
Preferably, the NFC antenna includes independent energy antenna, independent receiving antenna and independent transmitting antenna；
The energy antenna is used to acquire the electric energy in the NFC signal received；
The NFC communication module further includes demodulation module, modulation module, NFC controller, the receiving antenna and the solution
The electrical connection of mode transfer block, the transmitting antenna is electrically connected with the modulation module, the NFC controller respectively with the solution mode transfer
Block, modulation module electrical connection；
The receiving antenna is used to receive the NFC signal of NFC reader transmitting and is sent to the demodulation module, the solution
Solution adjusting data is transmitted to the NFC controller after the demodulation of mode transfer block；
The NFC controller is used to that data to be sent to be transmitted to the modulation module according to predetermined format, by the tune
NFC signal is sent to NFC reader by the transmitting antenna after the modulation of molding block.
Preferably, the NFC antenna includes independent energy antenna and independent communication antenna；The energy antenna is used for
Acquire the electric energy in the NFC signal received；
The NFC communication module further includes demodulation module, modulation module, NFC controller, the communication antenna respectively with institute
State demodulation module, modulation module electrical connection；
The communication antenna is used to receive the NFC signal of NFC reader transmitting and is sent to the demodulation module, the solution
Solution adjusting data is transmitted to the NFC controller after the demodulation of mode transfer block；
The NFC controller is used to that data to be sent to be transmitted to the modulation module according to predetermined format, by the tune
NFC signal is sent to NFC reader by the communication antenna after the modulation of molding block.
Preferably, the NFC communication module further includes data-interface；The data-interface and the control module communication link
It connects.
Preferably, the rectification circuit includes diode rectifier bridge, diode is in electric conduction in the diode rectifier bridge
Diode drop is less than 1V when stream is 20mA, and/or, the voltage regulator circuit includes linear voltage regulator or switching regulator, described
The output voltage range of voltage regulator circuit is 1.7V~3.6V.
Preferably, the energy-storage module includes energy-storage capacitor；The capacitance of the energy-storage capacitor be 22 μ F~
0.47F。
Preferably, the electric energy that the NFC communication module obtains is at least 20mW.
The present invention also provides a kind of smart lock, the smart lock includes above-mentioned intelligent lock circuit；The smart lock also wraps
Include actuating mechanism and lock core mechanism；
The drive module, the actuating mechanism and the lock core mechanism are successively connected with each other；
The drive module is used to drive the actuating mechanism that the lock core mechanism is driven to execute the operation for locking and unlocking.
Preferably, the actuating mechanism includes motor and the motor shaft for being fixedly arranged on the motor side, on the motor shaft
Equipped with screw thread；
The motor is electrically connected with the drive module of the intelligent lock circuit, the electric energy for providing the drive module
Kinetic energy is converted to drive the motor shaft to be rotated；
The lock core mechanism includes lock core base and the lock core for being fixedly arranged on the lock core base side；
The lock core base is equipped with the first aperture, is equipped on the inside of first aperture matched with the screw thread on the motor shaft
Nut；
The motor shaft is connect by first aperture with the lock core base.
Preferably, the smart lock further includes lock core limiter；
The lock core limiter is equipped with the second aperture, and the lock core is plugged on the lock core by second aperture and limits
In device, second aperture is bigger than the lock core；
The lock core limiter is used to limit the rotation of the lock core, guarantee the lock core along the motor axis direction into
Row linear movement, and resistance is not applied to the linear movement of the lock core.
Preferably, the diameter of second aperture is 0.8mm~3mm longer than the diameter of the lock core.
Preferably, the smart lock further includes pedestal；
The motor and the lock core limiter are each attached on the pedestal.
Preferably, the smart lock further includes position sensor；
The position sensor includes the first conductive contact and the second conductive contact for being fixedly arranged on the pedestal, and is fixedly arranged on
Third conductive contact on the lock core base；
First conductive contact, second conductive contact and the third conductive contact are along the motor axis direction
It is arranged and sets on the same line；
The third conductive contact is set between first conductive contact and second conductive contact；
The third conductive contact follows the lock core base to be moved, for leading with first conductive contact or second
Contact forms current loop；
The intelligence lock circuit obtains the positional relationship of the lock core base and the lock core by the current loop.
Preferably, first conductive contact is relative to second conductive contact closer to the motor；
When first conductive contact and the third conductive contact contact, the smart lock is in locking state；
When second conductive contact and the third conductive contact contact, the smart lock is in the unlocked state.
Preferably, the motor includes DC stepper motor or direct current on-stepper motor.
Preferably, the lock core base, the pedestal and the lock core limiter are by metal material, plastic material and/or wood
Material material is made.
The positive effect of the present invention is that:
The present invention obtains the electric energy in NFC signal by using the NFC energy antenna in NFC communication module, then by whole
The alternating current that current circuit will acquire is converted into direct current and is supplied to drive module working, drive module drive actions mechanism into
And acted with movable lock core, realize that the locking and unlock to lock core operate, and need to use to overcome existing smart lock
External cell is powered existing defect, gets rid of the limitation of battery, easy to use；Simultaneously as be not required to using battery and
Battery charger is set, so that the volume of smart lock reduces, weight saving reduces production cost.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the intelligent lock circuit of the embodiment of the present invention 1；
Fig. 2 is the electrical block diagram of the intelligent lock circuit of the embodiment of the present invention 2；
Fig. 3 is the electrical block diagram of the intelligent lock circuit of the embodiment of the present invention 3；
Fig. 4 is the overall structure diagram of the smart lock of the embodiment of the present invention 4；
Fig. 5 is the plan structure block diagram of the smart lock of the embodiment of the present invention 4；
Fig. 6 is the left view structural block diagram of the smart lock of the embodiment of the present invention 4；
Fig. 7 is the Facad structure block diagram of the smart lock of the embodiment of the present invention 4.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
Embodiment 1
As shown in Figure 1, intelligent lock circuit of the invention includes NFC communication module 1, rectification circuit 2, voltage regulator circuit 3, energy
Manage circuit 4, energy-storage module 5, drive module 6 and control module 7.
The NFC communication module 1 includes NFC antenna 11, and the NFC antenna 11 is for acquiring in the NFC signal received
RF energy.
Wherein, NFC antenna 11 can acquire 20mW or more in the NFC signal of the transmitting of the intelligent terminal with NFC antenna
Electric energy.
Interior of shell, inner surface or the outer surface of smart lock is arranged in NFC antenna 11, need to be as close as possible to smart lock outer surface
Place's setting, and be made of multi-turn coil, area is in 900mm2-2500mm2It is interior.
The NFC communication module 1 further includes data-interface 12；The data-interface 12 and 7 communication link of control module
It connects.
The rectification circuit 2 respectively with the NFC communication module 1, the voltage regulator circuit 3 and the energy management circuit 4
Electrical connection.
The rectification circuit 2 will be for that will receive the RF energy that the NFC communication module 1 is transmitted, and it is straight to be converted into first
Galvanic electricity energy, and it is transmitted to the voltage regulator circuit 3 and the energy management circuit 4.Wherein, the first direct current energy is high direct voltage.
Specifically, the rectification circuit 2 includes diode rectifier bridge, and diode is in electric conduction in the diode rectifier bridge
Diode drop is less than 1V when stream is 20mA.
The voltage regulator circuit 3 is used to carry out first direct current energy decompression and steady pressure treatment, is converted into the second direct current
Electric energy is powered to the NFC communication module 1 and the energy management circuit 4；Wherein, the second direct current energy is DC low-voltage.
Specifically, the voltage regulator circuit 3 includes linear voltage regulator or switching regulator, the output electricity of the voltage regulator circuit 3
Pressure range is 1.7V~3.6V.
The energy management circuit 4 is used to first direct current energy being transferred to the drive module 6.
The energy management circuit 4 is electrically connected with the energy-storage module 5, the electric energy for acquiring the NFC antenna 11
The energy-storage module 5 is transferred to charge.
Specifically, the energy management circuit 4 is used for the collected electricity of the NFC antenna 11 in the energy-storage module 5
When can be pulled down to first voltage threshold value, the charging to the energy-storage module 5 is cut off.
The energy management circuit 4 includes charge switch 41, discharge switch 42, first voltage comparator 43, second voltage
Comparator 44 and tertiary voltage comparator 45.
The charge switch 41 is electrically connected with the energy-storage module 5, and the energy management circuit 4 is also used to control described fill
The turn-on and turn-off of electric switch 41.
The charge switch 41 includes that control terminal 411 is forbidden in charging, and the charging forbids control terminal 411 for turning off by force
The charge switch 41.
The energy-storage module 5 to the energy management circuit 4 for discharging；The energy management circuit 4 is also used to
The property of the energy-storage module 5 is transferred to the drive module 6.
Specifically, the energy-storage module 5 is electrically connected by the discharge switch 42 with the drive module 6, the energy
Management circuit 4 is also used to control the turn-on and turn-off of the discharge switch 42.
Wherein, when it is implemented, the preferable energy-storage capacitor of the energy-storage module 5, the capacitance of energy-storage capacitor can be
Within the scope of 22 μ F~0.47F preferably, specific capacitance can be selected according to actual needs, and the bigger capacitor of capacity is storable
Electric energy is more, and smooth effect is also more preferable, but the charging time is longer when powering on, and the time that user needs to wait is also longer, energy storage electricity
The energy design that the pressure voltage of container is acquired according to NFC energy antenna, generally need to be in 9V or more；In order to reduce the energy-storage module
Multiple electricity can be used to promote storage efficiency in 5 ESR (Equivalent Series Resistance, equivalent series resistance)
Hold mode in parallel to be designed the energy-storage module 5.The response time of the charge switch 41 less than 10 μ s, and/or, institute
The response time of discharge switch 42 is stated less than 10 μ s.
Since the storage capacitor of the energy-storage module 5 is larger, access moment electric current is very big, can drag down direct current in a short time
High pressure causes the input voltage of voltage regulator circuit 3 sharply to decline, so that having cut off voltage regulator circuit 3 generates DC low-voltage, to reset
Entire intelligence lock circuit；Meanwhile the moment excessive variation of the high direct voltage of acquisition can interfere the NFC signal of NFC communication module 1
It receives and sends, so needing the variation of the high direct voltage of the monitoring input of energy management circuit 4, manage to the energy-storage module 5
Charging opportunity.
Specifically, energy management circuit 4 inputs institute by two input terminals in the first voltage comparator 43 respectively
The voltage and the first voltage threshold value, the output end of the first voltage comparator for stating the first direct current energy are opened with the charging
41 electrical connections are closed, the first voltage comparator 43 is used to be higher than the first voltage threshold in the voltage of first direct current energy
When value, otherwise output Continuity signal to the charge switch 41 exports cut-off signals to the charge switch 41, thus described
When the voltage of first direct current energy is not higher than the first voltage threshold value, the charge switch 41 is in an off state.
Wherein, the specific value of first voltage threshold value should generally be configured based on the actual application requirements, to meet difference
Application demand, but generally should be in 3.3V between 10V.
Wherein, for NFC communication module 1 when sending and receiving NFC signal by NFC antenna 11, energy management circuit 4 is not right
The energy-storage module 5 carries out charging operations.
Energy management circuit 4 is also used to the energy service condition of monitoring driving module 6, guarantees that drive module 6 will not will store up
The energy of energy module 5 is used up, to cause the too low the case where causing smart lock circuit reset for drawing high direct voltage.Energy management
Circuit 4 is that control module 7 provides the charged state instruction situation of energy-storage module 5, and disconnects the company with drive module 6 if necessary
It connects.
Specifically, energy management circuit 4 inputs institute by two input terminals in the second voltage comparator 44 respectively
State the tank voltage and second voltage threshold value of energy-storage module 5, the output end and the discharge switch of the second voltage comparator
42 electrical connections, the second voltage comparator 44 are used to be lower than the second voltage threshold in the tank voltage of the energy-storage module 5
When value, by the discharge switch 42 to the 6 out-put supply alarm signal of drive module, and power alarm signal is sent to
Control module 7, control module 7 can be temporarily disabled drive module 6, and after waiting power alarms signal to cancel, control module 7 then controls drive
Dynamic model block 6 restores to work normally.
Wherein, the specific value of second voltage threshold value should generally be configured based on the actual application requirements, to meet difference
Application demand, but generally should be in 3.3V between 7V
Two input terminals of the tertiary voltage comparator 45 input the tank voltage and third of the energy-storage module 5 respectively
Voltage threshold, the tertiary voltage threshold value are less than the second voltage threshold value, and the tertiary voltage comparator 45 is used for described
When the tank voltage of energy-storage module 5 is lower than the tertiary voltage threshold value, output cut-off signals to the discharge switch 42, and will close
Break signal is sent to control module 7, and control module 7 can be temporarily disabled drive module 6, and cut-off signals and power alarm signal is waited to remove
After pin, control module 7 carries out reset operation to drive module 6.
Wherein, second voltage threshold value should be higher than that tertiary voltage threshold value, and the specific value of tertiary voltage threshold value generally answers root
It is configured according to application request, to meet different application demand, but generally should be in 2.4V between 5V.
The control module 7 respectively with the NFC communication module 1, the energy management circuit 4 and the drive module 6
Communication connection；
The control module 7 between the NFC communication module 1 for carrying out data transmission；
The control module 7 is also used to send control instruction to the drive module 6, to be realized by control instruction
Control to the drive module 6；
The voltage regulator circuit 3 is electrically connected with the control module 7, and is the control mould by second direct current energy
Block 7 is powered.
The control module 7 is used to obtain the user in the NFC signal that the intelligent terminal that receives is sent by NFC antenna
Authentication information, to verify the identity of user.
Wherein, the drive module 6 includes drive axle, and the drive axle includes MOSFET or IGBT etc., for according to institute
It states smart lock described in the electrical energy drive of the input of energy management circuit 4 and executes the operation for locking and unlocking.
The working principle of the smart lock of the present embodiment is as follows:
The present embodiment acquires penetrating in the NFC signal that intelligent terminal is sent by the NFC antenna 11 in NFC communication module 1
Frequency energy, and rectification circuit 2 is transferred to by NFC communication module 1；Rectification circuit 2 is by the corresponding exchange of received RF energy
Electric energy is converted to high direct voltage, then carries out decompression processing to high direct voltage via voltage regulator circuit 3, and it is low to be converted into stable direct current
Pressure is powered to NFC communication module 1, control module 7 and energy management circuit 4 respectively；Meanwhile rectification circuit 2 is by the direct current of conversion
High-voltage transmission is to energy management circuit 4, and for carrying out charging energy-storing to energy-storage module 5, energy management circuit 4 passes high direct voltage
It is defeated by drive module 6, the drive module 6 drives the smart lock to execute the operation for locking and unlocking.Wherein, pass through NFC days
Line 11 sends and receivees NFC signal；First voltage comparator 43 in energy management circuit 4 is for guaranteeing voltage regulator circuit 3
It works normally, second voltage comparator 44 and tertiary voltage comparator 45 are for guaranteeing the normal work of drive module 6.
Embodiment 2
It is as shown in Fig. 2, the present embodiment is distinguished compared with Example 1:
The embodiment of the present invention NFC antenna 11 includes independent energy antenna 111, independent receiving antenna 13, independent
Transmitting antenna 14；The NFC communication module further includes demodulation module 15, modulation module 16, NFC controller 17, the reception day
Line 13 is electrically connected with the demodulation module 15, and the transmitting antenna 14 is electrically connected with the modulation module 16, the NFC controller
17 are electrically connected with the demodulation module 15, the modulation module 16 respectively.The NFC communication module 1 can also include NFC antenna
Interface.Wherein, the energy antenna 111 is used to acquire the electric energy in the NFC signal received.
The receiving antenna 13 is used to receive the NFC signal of NFC reader transmitting, and the demodulation module 15 will count after demodulating
According to being transmitted to the NFC controller 17；
The NFC controller 17 sends data to the modulation module 16 according to predetermined format, by the modulation module
NFC signal is sent to NFC reader by the transmitting antenna 14 after 16 modulation.
Wherein, NFC reader is the intelligent terminal (such as mobile phone) with NFC antenna.
Energy antenna 111, receiving antenna 13 and transmitting antenna 14 may be provided at the interior of shell of smart lock, inner surface or outer
Surface need to be arranged as close as possible to smart lock outer surface, and be made of multi-turn coil, and area is in 900mm2-2500mm2It is interior.
The working principle of the smart lock of the present embodiment is as follows:
The present embodiment is acquired by the energy antenna 111 in NFC communication module 1 in the NFC signal that intelligent terminal is sent
RF energy, and rectification circuit 2 is transferred to by NFC communication module 1；Rectification circuit 2 is by the corresponding friendship of received RF energy
Galvanic electricity can be converted to high direct voltage, then carry out decompression processing to high direct voltage via voltage regulator circuit 3, and it is low to be converted into stable direct current
Pressure is powered to NFC communication module 1, control module 7 and energy management circuit 4 respectively；Meanwhile rectification circuit 2 is by the direct current of conversion
High-voltage transmission is to energy management circuit 4, and for carrying out charging energy-storing to energy-storage module 5, energy management circuit 4 passes high direct voltage
It is defeated by drive module 6, the drive module 6 drives the smart lock to execute the operation for locking and unlocking.Wherein, respectively by only
Vertical receiving antenna 13, independent transmitting antenna 14 send and receive NFC signal；First voltage in energy management circuit 4
Comparator 43 is used to guarantee the normal work of voltage regulator circuit 3, second voltage comparator 44 and tertiary voltage comparator 45 for protecting
Demonstrate,prove the normal work of drive module 6.
Embodiment 3
It is as shown in figure 3, the present embodiment is distinguished compared with Example 2:
The embodiment of the present invention NFC antenna 11 includes independent energy antenna 111 and independent communication antenna 20, that is, is used
Independent communication antenna 20 replaces independent receiving antenna 13 and independent transmitting antenna 14 in embodiment 2, realizes to NFC signal
Send and receive.
Specifically, communication antenna 20 is electrically connected with the demodulation module 15, the modulation module 16.The communication antenna 20
After the NFC signal for receiving NFC reader transmitting, solution adjusting data is transmitted to the NFC after demodulating and controlled by the demodulation module 15
Device 17；
The NFC controller 17 sends data to the modulation module 16 according to predetermined format, by the modulation module
NFC signal is sent to NFC reader by the communication antenna 20 after 16 modulation.
Energy antenna 111 and communication antenna 20 may be provided at interior of shell, inner surface or the outer surface of smart lock, need as far as possible
It is arranged close to smart lock outer surface, and is made of multi-turn coil, area is in 900mm2-2500mm2It is interior.
The working principle of the smart lock of the present embodiment is as follows:
The present embodiment is acquired by the energy antenna 111 in NFC communication module 1 in the NFC signal that intelligent terminal is sent
RF energy, and rectification circuit 2 is transferred to by NFC communication module 1；Rectification circuit 2 is by the corresponding friendship of received RF energy
Galvanic electricity can be converted to high direct voltage, then carry out decompression processing to high direct voltage via voltage regulator circuit 3, and it is low to be converted into stable direct current
Pressure is powered to NFC communication module 1, control module 7 and energy management circuit 4 respectively；Meanwhile rectification circuit 2 is by the direct current of conversion
High-voltage transmission is to energy management circuit 4, and for carrying out charging energy-storing to energy-storage module 5, energy management circuit 4 passes high direct voltage
It is defeated by drive module 6, the drive module 6 drives the smart lock to execute the operation for locking and unlocking.Wherein, by described
Communication antenna 20 in NFC antenna 11 sends and receivees NFC signal；First voltage comparator 43 in energy management circuit 4
For guaranteeing the normal work of voltage regulator circuit 3, second voltage comparator 44 and tertiary voltage comparator 45 for guaranteeing driving mould
The normal work of block 6.
Embodiment 4
As shown in figure 4, the smart lock of the present embodiment includes intelligent lock circuit, actuating mechanism 8 and the lock core mechanism of embodiment 1
9。
Drive module 6, the actuating mechanism 8 and the lock core mechanism 9 of the intelligence lock circuit are successively connected with each other.Institute
Drive module 6 is stated for driving the actuating mechanism 8 that the lock core mechanism 9 is driven to execute the operation for locking and unlocking.
As shown in Figures 4 to 7, specifically, actuating mechanism 8 include motor 81 and with the electricity that is fixedly arranged on 81 side of motor
Arbor 82；The motor shaft 82 is equipped with screw thread.
Wherein, the motor 81 includes DC stepper motor or direct current on-stepper motor.
The motor 81 is connect with the drive module 6 of the intelligent lock circuit, the electricity for providing the drive module 6
Kinetic energy can be converted to drive the motor shaft 82 to be rotated；
The lock core mechanism 9 includes lock core base 91, the lock core 92 and lock core limiter for being fixedly arranged on 91 side of lock core base
93；
The lock core base 91 is equipped with the first aperture 911, and first aperture 911 matches setting with the motor shaft 82；Tool
Body, nut matched with the screw thread on the motor shaft 82 is equipped on the inside of first aperture 911；The motor shaft 82 passes through
First aperture 911 is connect with the lock core base 91.
The motor shaft 82 is connect by first aperture 911 with the lock core base 91, is realized and is driven the lock core base
91 move along 82 direction of motor shaft.
The lock core limiter 93 is equipped with the second aperture 931, and the lock core 92 is plugged on institute by second aperture 931
It states in lock core limiter 93, and second aperture is bigger than the lock core；
Specifically, the diameter of second aperture 931 is 0.8mm~3mm longer than the diameter of the lock core 92.
The aperture of second aperture 931 is slightly larger than the lock core 92, for guaranteeing the lock core 92 along the motor shaft 82
Direction carries out linear movement, and does not apply resistance to the linear movement of the lock core.
The smart lock further includes pedestal 10, and the motor 81 and the lock core limiter 93 are installed in the pedestal 10
On.
Wherein, the lock core base 91, the pedestal 10 and the lock core limiter 93 by metal material, plastic material and/
Or the materials such as timber are made.
The smart lock further includes position sensor 110；Wherein, position sensor 110 includes photosensitive sensor, miniature opens
At least one of pass and capacitor induction type sensor.
The position sensor 110 includes the first conductive contact 1111, the second conductive contact for being fixedly arranged on the pedestal 10
1112 and the third conductive contact 1113 that is fixedly arranged on the lock core base 91；
First conductive contact 1111, second conductive contact 1112 and the third conductive contact 1113 are along institute
It states the setting of 82 direction of motor shaft and sets on the same line；
The third conductive contact 1113 be set to first conductive contact 1111 and second conductive contact 1112 it
Between；
The third conductive contact 1113 follows the lock core base 91 to be moved, and is used for and first conductive contact
1111 or second conductive contact 1112 contact form current loop；
The intelligence lock circuit obtains the positional relationship of the lock core base 91 and the lock core 92 by the current loop.
Specifically, first conductive contact 1111 is relative to second conductive contact 1112 closer to the motor 81
Setting；
When first conductive contact 1111 is contacted with the third conductive contact 1113, the smart lock, which is in, locks shape
State；
When second conductive contact 1112 is contacted with the third conductive contact 1113, the smart lock is in unlock shape
State.
When the third conductive contact 1113 and first conductive contact 1111 and second conductive contact 1112 are equal
When not contacting, then the lock core 92 of smart lock is in the uncertain middle position for locking position and unlocked position.
Wherein, when carrying out locking operation, control module 7 controls 6 drive actions mechanism 8 of drive module to lock core mechanism 9
It locks, after actuating mechanism 8, which returns to control module 7, locks the signal completed, control module 7 stops drive actions mechanism immediately
8；Similarly, when being unlocked operation, control module 7 controls 6 drive actions mechanism 8 of drive module and unlocks to lock core mechanism 9, when
After actuating mechanism 8 returns to the signal that the unlock of control module 7 is completed, control module 7 stops drive actions mechanism 8 immediately.
The working principle of the smart lock of the present embodiment is as follows:
NFC antenna 11 in the NFC communication module 1 of the present embodiment acquires the RF energy in the NFC signal received, leads to
It crosses NFC communication module 1 and is transferred to rectification circuit 2, rectification circuit 2 is converted to the corresponding AC energy of received RF energy directly
High pressure is flowed, decompression processing is carried out to high direct voltage via voltage regulator circuit 3, is converted into stable DC low-voltage, gives NFC communication module
1, control module 7 and energy management circuit 4 are powered；Meanwhile the high direct voltage of conversion is transferred to energy management electricity by rectification circuit 2
Road 4, for carrying out charging energy-storing to energy-storage module 5, high direct voltage is transferred to drive module 6, the drive by energy management circuit 4
Dynamic model block 6 drives the smart lock to execute the operation for locking and unlocking.
It is connect by drive module 6 with the motor 81 in actuating mechanism 8, motor 81 is used for the electricity for providing drive module 6
Kinetic energy can be converted to drive the motor shaft 82 to be rotated, the rotation of motor shaft 82 drives lock core base 91 together along motor shaft
The movement of 82 dimension linears；Wherein, pass through the third conductive contact 1113 of position sensor 110 and the first conductive contact 1111 or the
Two conductive contacts 1112 contact situation judges the locking, unlock or nondeterministic statement of smart lock.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (31)
1. a kind of intelligence lock circuit, which is characterized in that the intelligence lock circuit includes NFC communication module and drive module；
The NFC communication module is electrically connected with the drive module；
The NFC communication module includes NFC antenna, and the NFC antenna is used to acquire the electric energy in the NFC signal received；
The NFC communication module is used to the electric energy that the NFC antenna acquires being transferred to the drive module；
The drive module is used to execute the operation for locking and unlocking using electrical energy drive smart lock.
2. intelligence lock circuit as described in claim 1, which is characterized in that the intelligence lock circuit further includes energy management electricity
Road；
The energy management circuit is electrically connected with the NFC communication module and the drive module respectively；
The energy management circuit is used to receive the electric energy of the NFC communication module transmission, and received electric energy is transferred to institute
State drive module.
3. intelligence lock circuit as claimed in claim 2, which is characterized in that the intelligence lock circuit further includes rectification circuit and steady
Volt circuit；
The rectification circuit is electrically connected with the NFC communication module, the voltage regulator circuit and the energy management circuit respectively；
The NFC communication module is used to receive the RF energy of the NFC antenna transmission and is transmitted to the rectification circuit；
The rectification circuit is used to the RF energy being converted into the first direct current energy, and is transmitted to the voltage regulator circuit and institute
State energy management circuit；
The voltage regulator circuit is used to carry out first direct current energy decompression and steady pressure treatment, is converted into the second direct current energy,
It powers to the NFC communication module and the energy management circuit；
The energy management circuit is used to first direct current energy being transferred to the drive module.
4. intelligence lock circuit as claimed in claim 3, which is characterized in that the intelligence lock circuit further includes energy-storage module；
The energy management circuit is electrically connected with the energy-storage module, for received first direct current energy to be transferred to institute
Energy-storage module is stated to charge.
5. intelligence lock circuit as claimed in claim 4, which is characterized in that the energy management circuit is also used in the energy storage
When the collected electric energy of the NFC antenna is pulled down to first voltage threshold value by module, the charging to the energy-storage module is cut off.
6. intelligence lock circuit as claimed in claim 5, which is characterized in that the energy management circuit includes charge switch, institute
Charge switch is stated to be electrically connected with the energy-storage module, the energy management circuit be also used to control the charge switch conducting and
Shutdown.
7. intelligence lock circuit as claimed in claim 6, which is characterized in that the charge switch further includes that charging is forbidden controlling
End, the charging forbid control terminal for turning off the charge switch by force.
8. intelligence lock circuit as claimed in claim 6, which is characterized in that the energy management circuit includes that first voltage compares
Device；
Two input terminals of the first voltage comparator input the voltage and first electricity of first direct current energy respectively
Threshold value is pressed, the output end of the first voltage comparator is electrically connected with the charge switch, and the first voltage comparator is used for
When the voltage of first direct current energy is higher than the first voltage threshold value, output Continuity signal to the charge switch.
9. intelligence lock circuit as claimed in claim 6, which is characterized in that the energy-storage module is used for the energy management electricity
It discharges on road；
The energy management circuit is also used to the property of the energy-storage module being transferred to the drive module.
10. intelligence lock circuit as claimed in claim 9, which is characterized in that the energy management circuit further includes discharge switch,
The energy-storage module is electrically connected by the discharge switch with the drive module, and the energy management circuit is also used to control institute
State the turn-on and turn-off of discharge switch.
11. intelligence lock circuit as claimed in claim 10, which is characterized in that the response time of the charge switch is less than 10 μ
S, and/or, the response time of the discharge switch is less than 10 μ s.
12. intelligence lock circuit as claimed in claim 10, which is characterized in that the energy management circuit further includes second voltage
Comparator；
Two input terminals of the second voltage comparator input the tank voltage and second voltage threshold of the energy-storage module respectively
Value, the output end of the second voltage comparator are electrically connected with the discharge switch, and the second voltage comparator is used in institute
When stating the tank voltage of energy-storage module lower than the second voltage threshold value, exported by the discharge switch to the drive module
Power alarm signal.
13. intelligence lock circuit as claimed in claim 12, which is characterized in that the energy management circuit further includes tertiary voltage
Comparator；
Two input terminals of the tertiary voltage comparator input the tank voltage and tertiary voltage threshold of the energy-storage module respectively
Value, the tertiary voltage threshold value are less than the second voltage threshold value, and the tertiary voltage comparator is used in the energy-storage module
Tank voltage when being lower than the tertiary voltage threshold value, output cut-off signals are to the discharge switch.
14. intelligence lock circuit as claimed in claim 3, which is characterized in that the intelligence lock circuit further includes control module；
The control module is communicated to connect with the NFC communication module, the energy management circuit and the drive module respectively；
The control module between the NFC communication module for carrying out data transmission；
The control module is also used to send control instruction to the drive module；
The voltage regulator circuit is electrically connected with the control module, and is control module confession by second direct current energy
Electricity.
15. intelligence lock circuit as claimed in claim 14, which is characterized in that the control module is used for what basis received
NFC signal carries out subscriber authentication.
16. intelligence lock circuit as described in claim 1, which is characterized in that the drive module includes drive axle；
The drive axle includes MOSFET or IGBT.
17. intelligence lock circuit as described in claim 1, which is characterized in that the NFC antenna include independent energy antenna,
Independent receiving antenna and independent transmitting antenna；The energy antenna is used to acquire the electric energy in the NFC signal received；
The NFC communication module further includes demodulation module, modulation module, NFC controller, the receiving antenna and the solution mode transfer
Block electrical connection, the transmitting antenna is electrically connected with the modulation module, the NFC controller respectively with the demodulation module, institute
State modulation module electrical connection；
The receiving antenna is used to receive the NFC signal of NFC reader transmitting and is sent to the demodulation module, the solution mode transfer
Solution adjusting data is transmitted to the NFC controller after block demodulation；
The NFC controller is used to that data to be sent to be transmitted to the modulation module according to predetermined format, by the modulation mould
NFC signal is sent to NFC reader by the transmitting antenna after block modulation.
18. intelligence lock circuit as described in claim 1, which is characterized in that the NFC antenna include independent energy antenna and
Independent communication antenna；The energy antenna is used to acquire the electric energy in the NFC signal received；
The NFC communication module further includes demodulation module, modulation module, NFC controller, the communication antenna respectively with the solution
Mode transfer block, modulation module electrical connection；
The communication antenna is used to receive the NFC signal of NFC reader transmitting and is sent to the demodulation module, the solution mode transfer
Solution adjusting data is transmitted to the NFC controller after block demodulation；
The NFC controller is used to that data to be sent to be transmitted to the modulation module according to predetermined format, by the modulation mould
NFC signal is sent to NFC reader by the communication antenna after block modulation.
19. intelligence lock circuit as claimed in claim 14, which is characterized in that the NFC communication module further includes data-interface；
The data-interface and the control module communicate to connect.
20. intelligence lock circuit as claimed in claim 3, which is characterized in that the rectification circuit includes diode rectifier bridge, institute
It states diode diode drop when conducting electric current is 20mA in diode rectifier bridge and is less than 1V, and/or, the voltage regulator circuit packet
Linear voltage regulator or switching regulator are included, the output voltage range of the voltage regulator circuit is 1.7V~3.6V.
21. intelligence lock circuit as claimed in claim 4, which is characterized in that the energy-storage module includes energy-storage capacitor；It is described
The capacitance of energy-storage capacitor is 22 μ F~0.47F.
22. intelligence lock circuit as described in claim 1, which is characterized in that the electric energy that the NFC communication module obtains is at least
20mW。
23. a kind of smart lock, which is characterized in that including intelligent lock circuit described in any one of claim 1~22；The intelligence
Can lock further includes actuating mechanism and lock core mechanism；
The drive module, the actuating mechanism and the lock core mechanism are successively connected with each other；
The drive module is used to drive the actuating mechanism that the lock core mechanism is driven to execute the operation for locking and unlocking.
24. smart lock as claimed in claim 23, which is characterized in that the actuating mechanism includes motor and is fixedly arranged on the electricity
The motor shaft of machine side, the motor shaft are equipped with screw thread；
The motor is electrically connected with the drive module of the intelligent lock circuit, the electric energy conversion for providing the drive module
The motor shaft is driven to be rotated for kinetic energy；
The lock core mechanism includes lock core base and the lock core for being fixedly arranged on the lock core base side；
The lock core base is equipped with the first aperture, is equipped with spiral shell matched with the screw thread on the motor shaft on the inside of first aperture
It is female；
The motor shaft is connect by first aperture with the lock core base.
25. smart lock as claimed in claim 24, which is characterized in that the smart lock further includes lock core limiter；
The lock core limiter is equipped with the second aperture, and the lock core is plugged on the lock core limiter by second aperture
Interior, second aperture is bigger than the lock core；
The lock core limiter is used to limit the rotation of the lock core, guarantees that the lock core carries out line along the motor axis direction
Property movement, and resistance is not applied to the linear movement of the lock core.
26. smart lock as claimed in claim 25, which is characterized in that diameter of the diameter of second aperture than the lock core
Long 0.8mm~3mm.
27. smart lock as claimed in claim 25, which is characterized in that the smart lock further includes pedestal；
The motor and the lock core limiter are each attached on the pedestal.
28. smart lock as claimed in claim 27, which is characterized in that the smart lock further includes position sensor；
The position sensor includes the first conductive contact and the second conductive contact for being fixedly arranged on the pedestal, and is fixedly arranged on described
Third conductive contact on lock core base；
First conductive contact, second conductive contact and the third conductive contact are arranged along the motor axis direction
And it sets on the same line；
The third conductive contact is set between first conductive contact and second conductive contact；
The third conductive contact follows the lock core base to be moved, for touching with first conductive contact or the second conduction
Point contact forms current loop；
The intelligence lock circuit obtains the positional relationship of the lock core base and the lock core by the current loop.
29. smart lock as claimed in claim 28, which is characterized in that first conductive contact is conductive relative to described second
Contact is closer to the motor；
When first conductive contact and the third conductive contact contact, the smart lock is in locking state；
When second conductive contact and the third conductive contact contact, the smart lock is in the unlocked state.
30. smart lock as claimed in claim 24, which is characterized in that the motor includes DC stepper motor or the non-step of direct current
Into motor.
31. smart lock as claimed in claim 27, which is characterized in that the lock core base, the pedestal and lock core limitation
Device is made of metal material, plastic material and/or wood quality.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986603.7A CN109697768A (en) | 2017-10-20 | 2017-10-20 | Intelligent lock circuit and smart lock |
| PCT/CN2018/111004 WO2019076367A1 (en) | 2017-10-20 | 2018-10-19 | Smart lock circuit and smart lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986603.7A CN109697768A (en) | 2017-10-20 | 2017-10-20 | Intelligent lock circuit and smart lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109697768A true CN109697768A (en) | 2019-04-30 |
Family
ID=66225395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710986603.7A Pending CN109697768A (en) | 2017-10-20 | 2017-10-20 | Intelligent lock circuit and smart lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109697768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115512467A (en) * | 2022-09-09 | 2022-12-23 | 硕能(上海)自动化科技有限公司 | NFC-based electronic key authorized unlocking method capable of achieving unlocking power improvement |
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