Double-drive intelligent door lock

文档序号：1587863 发布日期：2020-02-04 浏览：11次中文

阅读说明：本技术 双驱动智能门锁 (Double-drive intelligent door lock ) 是由刘风鸣吴凯于 2019-08-28 设计创作，主要内容包括：本发明公开了一种双驱动智能门锁,包括门锁结构壳体、锁芯和设置在门锁结构内的通信及驱动电路板,通信及驱动电路板包括：主电机驱动电路、从电机驱动电路、主蓝牙模块和从蓝牙模块,主电机驱动电路用于驱动门锁电机转动；从电机驱动电路用于驱动门锁电机转动；主蓝牙模块用于通过主电机驱动电路驱动门锁电机转动,以将门锁锁紧或打开；从蓝牙模块用于在主蓝牙模块出现故障时,通过从电机驱动电路驱动门锁电机转动,以将门锁锁紧或打开。通过在一套门锁锁具中,采用双蓝牙模块控制双电机驱动电路来控制门锁电机转动的方式开锁。一方面,减少了门锁的整体生产成本。另一方面,保证了智能门锁长期正常工作,减少智能门锁出现故障的频率。(The invention discloses a dual-drive intelligent door lock, which comprises a door lock structure shell, a lock cylinder and a communication and drive circuit board arranged in the door lock structure, wherein the communication and drive circuit board comprises: the door lock comprises a main motor driving circuit, a slave motor driving circuit, a main Bluetooth module and a slave Bluetooth module, wherein the main motor driving circuit is used for driving a door lock motor to rotate; the slave motor driving circuit is used for driving the door lock motor to rotate; the main Bluetooth module is used for driving a door lock motor to rotate through a main motor driving circuit so as to lock or unlock the door lock; the slave Bluetooth module is used for driving the door lock motor to rotate through the slave motor driving circuit when the master Bluetooth module breaks down so as to lock or unlock the door lock. The lock is unlocked by controlling the double-motor driving circuit by the double-Bluetooth module in one set of door lock lockset in a mode of controlling the rotation of the door lock motor. On the one hand, the overall production cost of the door lock is reduced. On the other hand, the long-term normal work of intelligent lock has been guaranteed, reduces the frequency that intelligent lock broke down.)

1. The utility model provides a dual drive intelligence lock, includes lock structure casing, lock core and sets up communication and the dirver circuit board in lock structure, its characterized in that, communication and dirver circuit board include:

the main motor driving circuit is connected with the door lock motor and is used for driving the door lock motor to rotate;

the slave motor driving circuit is connected with the door lock motor and is used for driving the door lock motor to rotate;

the main Bluetooth module is connected with the main motor driving circuit and used for outputting a motor control signal so as to drive the door lock motor to rotate through the main motor driving circuit and lock or unlock the door lock;

and the slave Bluetooth module is respectively connected with the master Bluetooth module and the slave motor driving circuit and used for outputting a motor control signal when the master Bluetooth module breaks down so as to drive the door lock motor to rotate through the slave motor driving circuit to lock or unlock the door lock.

2. The dual drive intelligent door lock of claim 1, wherein the main motor drive circuit comprises:

the main driving circuit comprises a main driving chip and a main chip peripheral circuit, the main driving chip is respectively connected with the main Bluetooth module and the door lock motor, and the main driving circuit is used for converting a control signal output by the main Bluetooth module into a first motor driving signal;

the main driving turn-off circuit is connected with the grounding end of the main driving chip and is referenced to the ground, and the main driving turn-off circuit is used for controlling the connection and disconnection between the grounding end of the main driving chip and the reference ground so as to drive the door lock motor to rotate or stop rotating through the main driving chip.

3. The dual drive intelligent door lock of claim 1, wherein the slave motor drive circuit comprises:

the slave driving circuit comprises a slave driving chip and a slave chip peripheral circuit, the slave driving chip is respectively connected with the slave Bluetooth module and the door lock motor, and the slave driving circuit is used for converting a control signal output by the slave Bluetooth module into a second motor driving signal;

and the slave driving turn-off circuit is connected with the grounding end of the slave driving chip and is used for controlling the connection and disconnection between the grounding end of the slave driving chip and the reference ground so as to drive the door lock motor to rotate or stop rotating through the slave driving chip.

4. A dual-drive intelligent door lock according to claim 1, wherein the communication and drive circuit board further comprises a dual-power supply circuit, the dual-power supply circuit being connected to the master motor drive circuit, the slave motor drive circuit, the master bluetooth module and the slave bluetooth module, respectively, to supply power to the master motor drive circuit, the slave motor drive circuit, the master bluetooth module and the slave bluetooth module; wherein, dual power supply circuit includes:

the first power supply circuit is used for providing a first power supply;

the second power supply circuit is used for providing a second power supply;

the power supply selection circuit is connected with the first power supply circuit and the second power supply circuit respectively, and is used for selecting the first power supply or the second power supply to supply power to the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module.

5. The dual drive intelligent door lock of claim 4, wherein the power supply selection circuit comprises: the power supply starting circuit comprises a starting circuit and a conducting circuit, the input end of the starting circuit is connected with the output end of the first power supply, and the output end of the starting circuit is respectively connected with the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module;

the input end of the conduction circuit is respectively connected with the output end of the first power supply and the output end of the second power supply circuit, and the input end of the conduction circuit is respectively connected with the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module.

6. The dual-drive intelligent door lock according to claim 1, wherein the communication and drive circuit board further comprises a capacitor power supply circuit, and the capacitor power supply circuit is connected with the dual-power supply circuit and the remote wireless communication module, respectively, and is used for supplying power to the remote wireless communication module.

7. The dual drive intelligent door lock of claim 6, wherein the capacitive power supply circuit comprises:

the main power supply circuit and the dual-power supply circuit are used for converting power supply voltage output by the dual-power supply circuit into a stable first power supply;

the capacitor circuit comprises a battery capacitor, one end of the battery capacitor is connected with the first power supply output end of the main power supply circuit, and the other end of the battery capacitor is connected with a reference ground.

8. The dual drive intelligent door lock of claim 7, wherein the capacitive circuit further comprises: a diode (D200), said battery capacitor being connected to said main power supply circuit through said diode (D200), wherein said diode anode is connected to said main power supply circuit and said diode cathode is connected to said one end of said battery capacitor.

9. The dual drive intelligent door lock of claim 1, wherein the slave bluetooth module comprises:

the Bluetooth receiving and transmitting antenna is connected with the slave Bluetooth module and is used for receiving and transmitting Bluetooth wireless information input and output by the slave Bluetooth module;

and the falling detection circuit is respectively connected with the slave Bluetooth module and the Bluetooth receiving and transmitting antenna and is used for detecting whether the Bluetooth receiving and transmitting antenna falls off or not.

10. The dual drive intelligent door lock of claim 9, wherein the drop detection circuit comprises: the Bluetooth module comprises an inductor (L809) and a resistor (R810), one end of the resistor (R810) is connected with a power supply, the other end of the resistor (R810) is connected with one end of the inductor (L809), the other end of the inductor (L809) is connected with one end of a Bluetooth transceiving antenna, the other end of the Bluetooth transceiving antenna is connected with a reference ground, and a common end of the inductor (L809) and the resistor (R810) is connected with the slave Bluetooth module.

Technical Field

The invention relates to the technical field of intelligent door locks, in particular to a dual-drive intelligent door lock.

Background

The intelligent door lock is different from a traditional mechanical door lock, the main electronic equipment of the intelligent door lock controls the motor to rotate to control the stretching of the lock cylinder to lock or unlock the door, and the motor control equipment are electronic equipment, so that the electronic equipment can break down in the using process. The intelligent door lock has the advantages that the door lock cannot be normally locked or unlocked, great inconvenience is brought to a user, in the prior art, the motor is controlled to rotate mainly by adopting two sets of intelligent door locks simultaneously, so that when one set of intelligent door lock breaks down, the other set of intelligent door lock driving motor can be started to work. The problem of high production cost of the intelligent door lock can be brought by adopting two sets of intelligent door locks at that time.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to provide a dual-drive intelligent door lock.

In order to achieve the above object, the dual-drive intelligent door lock according to the embodiment of the present invention includes a door lock structure housing, a lock cylinder, and a communication and driving circuit board disposed in the door lock structure, wherein the communication and driving circuit board includes:

the main motor driving circuit is connected with the door lock motor and is used for driving the door lock motor to rotate;

the slave motor driving circuit is connected with the door lock motor and is used for driving the door lock motor to rotate;

Further, according to an embodiment of the present invention, the main motor drive circuit includes:

Further, according to an embodiment of the present invention, the slave motor driving circuit includes:

Further, according to an embodiment of the present invention, the communication and driving circuit board further includes a dual power supply circuit, which is respectively connected to the master motor driving circuit, the slave motor driving circuit, the master bluetooth module and the slave bluetooth module to supply power to the master motor driving circuit, the slave motor driving circuit, the master bluetooth module and the slave bluetooth module; wherein, dual power supply circuit includes:

the first power supply circuit is used for providing a first power supply;

the second power supply circuit is used for providing a second power supply;

Further, according to an embodiment of the present invention, the power supply selection circuit includes: the power supply starting circuit comprises a starting circuit and a conducting circuit, the input end of the starting circuit is connected with the output end of the first power supply, and the output end of the starting circuit is respectively connected with the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module;

Further, according to an embodiment of the present invention, the communication and driving circuit board further includes a capacitor power supply circuit, and the capacitor power supply circuit is connected to the dual power supply circuit and the remote wireless communication module, respectively, and is configured to supply power to the remote wireless communication module.

Further, according to an embodiment of the present invention, the capacitor supply circuit includes:

the main power supply circuit and the dual-power supply circuit are used for converting power supply voltage output by the dual-power supply circuit into a stable first power supply;

Further, according to an embodiment of the present invention, the capacitor circuit further includes: and the battery capacitor is connected with the main power supply circuit through the diode D200, wherein the anode of the diode is connected with the main power supply circuit, and the cathode of the diode is connected with one end of the battery capacitor.

Further, according to an embodiment of the present invention, the slave bluetooth module includes:

Further, according to an embodiment of the present invention, the dropout detection circuit includes: the Bluetooth module comprises an inductor L809 and a resistor R810, one end of the resistor R810 is connected with a power supply, the other end of the resistor R810 is connected with one end of the inductor L809, the other end of the inductor L809 is connected with one end of a Bluetooth transceiving antenna, the other end of the Bluetooth transceiving antenna is connected with a reference ground, and a common end of the inductor L809 and the resistor R810 is connected with the slave Bluetooth module.

In the embodiment of the invention, the lock is unlocked by adopting a mode that the double Bluetooth modules respectively control the double-motor driving circuits to control the rotation of the door lock motor in one set of door lock lockset. On the one hand, the overall production cost of the door lock is reduced. On the other hand, when one of them bluetooth module broke down and can't drive the lock motor and rotate and unblank or lock the operation, another bluetooth module and motor drive circuit can drive lock motor 13 and rotate and unblank or lock, have guaranteed that intelligent lock is normal work for a long time, reduce the frequency that intelligent lock broke down.

Drawings

FIG. 1 is a block diagram of a dual-drive intelligent door lock according to an embodiment of the present invention;

fig. 2 is a block diagram of a communication and driving circuit board according to an embodiment of the present invention;

FIG. 3 is a diagram of a main motor driving circuit according to an embodiment of the present invention;

FIG. 4 is a circuit diagram of a slave motor driver according to an embodiment of the present invention;

fig. 5 is a block diagram of a dual power supply circuit according to an embodiment of the present invention;

FIG. 6 is a diagram of a power supply selection circuit according to an embodiment of the present invention;

FIG. 7 is a diagram of a first power supply circuit according to an embodiment of the present invention;

FIG. 8 is a diagram of a second power supply circuit according to an embodiment of the present invention;

fig. 9 is a block diagram of a capacitor power supply circuit according to an embodiment of the present invention;

FIG. 10 is a diagram of a capacitor power supply circuit according to an embodiment of the present invention;

fig. 11 is a block diagram of an antenna fall-off detection circuit according to an embodiment of the present invention;

fig. 12 is a circuit diagram of an antenna fall-off detection circuit according to an embodiment of the invention;

fig. 13 is a structural diagram of an antenna installation structure of bluetooth transceiver according to an embodiment of the present invention.

Reference numerals:

a master bluetooth module 10;

a slave bluetooth module 20;

the slave bluetooth chip 201;

a slave bluetooth filter circuit 202;

a dropout detection circuit 203;

an antenna interface 204;

a grounded conductive housing 2041;

a bluetooth transceiver signal line 2042;

a bluetooth transceiving antenna 205;

an antenna ground line 2051;

an antenna ground housing 2052;

a WIFI module 30;

a GSM module 40;

an audio power amplifier 50;

a gravity sensor 60;

a fingerprint module 70;

a door lock infrared contraposition detection circuit 80;

an open/close state detection circuit 90;

a main motor drive circuit 11;

a main drive circuit 1101;

a main drive shutdown circuit 1102;

a motor failure detection circuit 1103;

the slave motor drive circuit 12;

the slave driving circuit 1201;

the slave drive shutdown circuit 1202;

slave motor fault detection circuitry 1203;

a door lock motor 13;

a speaker 14;

a power switch control 15;

a main debug interface 16;

from the debug interface 17;

a FLASH memory 18;

an EEPROM memory 19;

a dual power supply circuit 21;

a power interface 2101;

a first power supply circuit 2102;

a battery voltage detection circuit 21021;

a battery power supply circuit 21022;

a first battery 210221;

a second battery 210222;

a second power supply circuit 2103;

a power supply selection circuit 2104;

a power supply start circuit 21041;

a power supply protection circuit 21042;

a capacitive power supply circuit 22;

a main power supply circuit 2201;

a capacitive circuit 2202.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a dual-drive intelligent door lock, including a door lock structure housing, a lock cylinder, and a communication and driving circuit board disposed in the door lock structure housing, where the communication and driving circuit board includes: the Bluetooth system comprises a main motor driving circuit 11, a slave motor driving circuit 12, a main Bluetooth module 10 and a slave Bluetooth module 20, wherein the main motor driving circuit 11 is connected with a door lock motor 13 and is used for driving the door lock motor 13 to rotate; when a user unlocks or locks a door, the lock cylinder is driven to move through the rotation of the door lock motor 13, the movement of the lock cylinder can be matched with the shell of the door lock structure to lock the door or unlock the door lock, and as the rotation of the door lock motor 13 needs a certain driving current, an unlocking signal output by the main Bluetooth module 10 can be converted into motor driving through the main motor driving circuit 11 to drive the door lock motor 13 to rotate to move the lock cylinder, so that the locking of the door lock is realized or the door lock is unlocked.

The slave motor driving circuit 12 is connected with the door lock motor 13 and is used for driving the door lock motor 13 to rotate, similarly, the slave motor driving circuit 12 is also connected with the door lock motor 13, and an unlocking signal output by the Bluetooth module 20 can be converted into motor driving through the slave motor driving circuit 12 so as to drive the door lock motor 13 to rotate, so that the door lock is locked or unlocked.

The main Bluetooth module 10 is connected with a main motor driving circuit 11 and used for outputting a motor control signal so as to drive a door lock motor 13 to rotate through the main motor driving circuit 11, and thus a door is locked or the door lock is unlocked; in the implementation of the invention, the master bluetooth module 10 is a preferred lock control module, and when a user selects to open and close the lock in a bluetooth mode, the master bluetooth module 10 is selected to control the door lock motor 13 to rotate through the master motor driving circuit 11, so as to realize the locking or unlocking operation of the door lock.

The slave bluetooth module 20 is respectively connected with the master bluetooth module 10 and the slave motor driving circuit 12, and is configured to output a motor control signal when the master bluetooth module 10 fails, so as to drive the door lock motor 13 to rotate through the slave motor driving circuit 12, so as to lock the door or unlock the door. When the main bluetooth module 10 fails, the main bluetooth module 10 cannot output a control signal to control the rotation of the door lock motor 13, so as to perform the locking or unlocking operation of the door lock. At this time, the slave bluetooth module 20 receives the unlocking operation performed by the user through the bluetooth mode, and outputs a control signal to the slave motor driving circuit, and controls the door lock motor 13 to rotate through the slave driving circuit, so as to realize the locking or unlocking operation of the door lock.

In the embodiment of the invention, the lock is unlocked by adopting a mode that the double Bluetooth modules respectively control the double-motor driving circuit to control the rotation of the door lock motor 13 in one set of door lock lockset. On the one hand, the overall production cost of the door lock is reduced. On the other hand, when one of them bluetooth module breaks down and can't drive lock motor 13 and rotate and unblank or lock the operation, another bluetooth module and motor drive circuit can drive lock motor 13 and rotate and unblank or lock, have guaranteed that intelligent lock is normal work for a long time, reduce the frequency that intelligent lock broke down.

Referring to fig. 3, further, in one embodiment of the present invention, the main motor drive circuit 11 includes: the main driving circuit 1101, the main driving circuit 1101 includes a main driving chip U600 and a main chip peripheral circuit, the main driving chip U600 is connected with the main bluetooth module 10 and the door lock motor 13, respectively, and the main driving circuit 1101 is configured to convert a control signal output by the main bluetooth module 10 into a first motor driving signal. Because the rotation of the door lock motor 13 needs a certain current, the output signal of the main bluetooth module 10 may not meet the driving requirement of the motor, and the output signal of the main bluetooth module 10 is converted into the driving current of the door lock motor 13 through the main driving chip U600 to drive the door lock motor 13 to rotate. Through adopting single-chip motor drive circuit drive to come lock motor 13 to rotate, reducible motor drive circuit's electronic components quantity to and reduce motor drive circuit's volume, increase motor drive circuit's stability. As shown in fig. 3, the operating principle of the main motor drive circuit 11 is specifically: the signal input terminals IN1 and IN2 of the main driving chip U600 are respectively connected to the main bluetooth module 10 to receive the motor control signal outputted from the main bluetooth module 10. The main driving chip U600 converts the motor control signal output by the main bluetooth module 10 into a motor driving current, and outputs the motor driving current to the door lock motor 13 through the signal output terminals OUT1 and OUT2 of the main driving chip U600, so as to drive the door lock motor 13 to rotate.

Referring to fig. 3, further, in an embodiment of the present invention, the main motor driving circuit 11 further includes: the main driving turn-off circuit 1102 is connected with the ground terminal of the main driving chip U600 and the reference ground, and the main driving turn-off circuit 1102 is used for controlling the on-off between the ground terminal GND of the main driving chip and the reference ground so as to control the rotation or stop the rotation of the door lock motor 13 through the main driving chip. As shown in fig. 3, a main drive shutdown circuit 1102 is provided between the main drive chip U600 and the reference ground to control the connection of the drive circuit to the reference ground, thereby controlling the operating state of the main drive chip U600. For example, when the ground terminal of the main driving chip U600 is connected to the reference ground, the main driving chip U600 is in a normal working state, and the main driving chip U600 can drive the door lock motor 13 to rotate under the action of the main bluetooth module 10; when the grounding end of the main driving chip U600 is disconnected from the reference ground, the main driving chip U600 is in a stop state, and thus the door lock motor 13 cannot be driven to rotate under the action of the main bluetooth module 10.

That is, in the embodiment of the present invention, the main driving shutdown circuit 1102 controls whether the main driving chip is grounded, so as to set the operating state of the main driving chip. When the door lock motor 13 needs to be driven to rotate by the main driving chip U600, the ground end GND of the main driving chip U600 can be communicated with the reference ground; when the door lock motor 13 does not need to be driven to rotate by the main driving chip U600, the connection between the ground terminal of the main driving chip and the reference ground can be disconnected, so that the mutual independence between the main driving circuit 1101 and the slave driving circuit is maintained, and the interference to the slave driving circuit is avoided.

Referring to fig. 4, similarly, the slave motor driving circuit 12 also includes a slave driving circuit 1201 and a slave driving shutdown circuit 1202, and the circuit connection relationship is the same as that of the master motor driving circuit 11, and the function is the same. For brevity, detailed description is not repeated herein.

Referring to fig. 3, further, in an embodiment of the present invention, the main motor driving circuit 11 further includes: motor failure detection circuit 1103, motor failure detection circuit 1103 includes: one end of the resistor R610 is connected with the positive output end OUT1 of the main driving chip U600, the other end of the resistor R610 is connected with one end of the resistor R611, the other end of the resistor R611 is connected with the reference ground, and the common ends of the resistor R610 and the resistor R611 are connected with the main Bluetooth module 10 and/or the slave Bluetooth module 20; one end of the resistor R613 is connected with the negative output end OUT2 of the main driving chip U600, the other end of the resistor R613 is connected with one end of the resistor R612, the other end of the resistor R612 is connected with the reference ground, and the common end of the resistor R613 and the resistor R612 is connected with the main Bluetooth module 10 and/or the auxiliary Bluetooth module 20. The resistor R610 and the resistor R611 form a voltage dividing circuit, and the voltage at one end of the main driving chip is acquired, divided and then transmitted to the main bluetooth module 10 and/or the slave bluetooth module 20. Similarly, the resistor R612 and the resistor R613 also form a voltage dividing circuit, and the voltage at the other end of the main driving chip is collected and divided and then transmitted to the main bluetooth module 10 and/or the slave bluetooth module 20. Through the detection of the output voltage of the main driving chip by the main Bluetooth module 10 and/or the auxiliary Bluetooth module 20, whether the problem of short circuit or fault of the door lock motor 13 occurs can be judged. To assist in maintenance of the door lock motor 13.

Similarly, referring to fig. 4, the slave motor driving circuit 12 also includes a slave motor failure detection circuit 1203, the slave motor failure detection circuit 1203 includes a resistor R607 and a resistor R608, the positive output terminal of the slave driving chip U601 is connected to the positive output terminal of the master driving chip U600 through the resistor R607, the negative output terminal of the slave driving chip U601 is connected to the negative output terminal of the master driving chip U600 through the resistor R608, and the failure detection principle is the same as that of the motor failure detection circuit 1103.

More specifically, referring to fig. 3 and 4, a common terminal of the resistor R610 and the resistor R611 is used for detecting a level state of a power supply input terminal of the unlocking motor during locking and unlocking. When the motor driving chip U600 is damaged due to some reason and causes the positive and negative poles of the output end of the driving chip to be short-circuited with the chip ground of the U600, the common end of the resistor R610 and the resistor R611, that is, the detection end, is at a low level, and the detection end is at a high level when the lock is normally unlocked. At this time, the main bluetooth module 10 cuts off the connection between the ground of the motor driving chip U600 and the reference ground by controlling the N-MOS transistor Q600, so that the positive electrode and the negative electrode of the output end of the U600 driving chip are not connected with the reference ground. Then, the master bluetooth module 10 informs the slave bluetooth module 20 to control the slave motor driving chip U601 to drive the motor to unlock, so that it is ensured that the 2-way motor driving chip can normally unlock when being damaged all the way.

Referring to fig. 1 and 5, further, in an embodiment of the present invention, the communication and driving circuit board further includes a dual power supply circuit 21, and the dual power supply circuit 21 is respectively connected to the master motor driving circuit 11, the slave motor driving circuit 12, the master bluetooth module 10, and the slave bluetooth module 20 to supply power to the master motor driving circuit 11, the slave motor driving circuit 12, the master bluetooth module 10, and the slave bluetooth module 20.

As shown in fig. 5, in one embodiment of the present invention, the dual power supply circuit 21 includes: a first power supply circuit 2102, a second power supply circuit 2103 and a power supply selection circuit 2104, wherein the first power supply circuit 2102 is used for providing a first power supply; that is, the first power supply source can be introduced through the first power supply circuit 2102 to supply power to each of the modules including the master motor drive circuit 11, the slave motor drive circuit 12, the master bluetooth module 10, and the slave bluetooth module 20.

The second power supply circuit 2103 is used for providing a second power supply; that is, the second secondary power supply may be introduced through the second power supply circuit 2103 to supply power to each of the modules including the master motor drive circuit 11, the slave motor drive circuit 12, the master bluetooth module 10, and the slave bluetooth module 20.

The power supply selection circuit 2104 is connected to the first power supply circuit 2102 and the second power supply circuit 2103, respectively, and the power supply selection circuit 2104 is configured to select the first power supply or the second power supply to supply power to the master motor driving circuit 11, the slave motor driving circuit 12, the master bluetooth module 10, and the slave bluetooth module 20. Since the first power supply introduced by the first power supply circuit 2102 and the second power supply introduced by the second power supply circuit 2103 are two independent dc power supplies, one of the two independent dc power supplies can be selected as the power supply by the power supply selection circuit 2104. In an embodiment of the present invention, the second power supply circuit 2103 is an external power supply circuit, when an external power supply is connected, the power supply selection circuit 2104 preferentially selects the external power supply to supply power to each circuit module, and when no external power supply is connected, the power supply selection circuit 2104 selects an internal battery as a power supply.

In the embodiment of the invention, the dual-power supply circuit 21 is used for providing mutually independent dual-path power supplies for each circuit module of the intelligent door lock, and after one path of power supply cannot supply power, the other path of power supply can be used for supplying power for the intelligent door lock. The long-term normal work of intelligence lock is guaranteed, reduces the trouble that intelligence lock appears because the power supply.

Further, referring to fig. 6, in an embodiment of the invention, the power supply selection circuit 2104 includes: the power supply starting circuit 21041 comprises a starting circuit 210411 and a conducting circuit 210412, the input end of the starting circuit 210411 is connected with the output end of the first power supply VBAT _ M, and the output end of the starting circuit 210411 is respectively connected with the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module;

the input end of the conduction circuit 210412 is respectively connected with the output end of the first power supply VBAT _ M and the output end of the second power supply VBUS _4V power supply circuit, and the input end of the conduction circuit is respectively connected with the main motor driving circuit, the slave motor driving circuit, the main Bluetooth module and the slave Bluetooth module.

Referring to fig. 6, further, in an embodiment of the invention, the start-up circuit 210411 includes a start-up diode D102, and the turn-on circuit 210412 includes a first MOS transistor Q100, a resistor R102, and a resistor R103. The anode of the starting diode D102 is connected with the output end of a first power supply VBAT _ M, the cathode of the starting diode D102 is connected with the main motor driving circuit, the auxiliary motor driving circuit, the main Bluetooth module and the auxiliary Bluetooth module (each circuit module of the intelligent door lock), the drain of the first MOS transistor Q100 is connected with the output end of the first power supply VBAT _ M, the source of the first MOS transistor Q100 is connected with the cathode of the starting diode D102, the gate of the first MOS transistor Q100 is connected with one end of a resistor R102, the other end of the resistor R102 is connected with one end of a resistor R103, the other end of the resistor R103 is connected with a reference, and the common end of the resistor R102 and the resistor R103 is connected with the output end of a second power supply VBUS _ 4V.

As shown in fig. 6, the power supply start circuit 21041 specifically operates on the principle that when the output terminal of the first power supply VBAT _ M has a power supply output, the first power supply VBAT _ M acts on the anode of the start diode D102 to turn on the start diode D102, and when the start diode D102 is turned on, the source of the first MOS transistor Q100 is at a high level voltage. And since the first MOS transistor Q100 is a P-channel MOS transistor. The gate of the first MOS transistor Q100 is connected to the reference through the resistor R102 and the resistor R103, a conduction voltage appears between the source and the gate of the first MOS transistor Q100, so that the source and the drain of the first MOS transistor Q100 are conducted, the first MOS transistor Q100 directly outputs the first power supply VBAT _ M, and the voltage difference between the two ends of the start diode D102 is rapidly reduced due to the conduction between the source and the drain of the first MOS transistor Q100. At this time, the start diode D102 is turned off because the voltage difference between the anode and the cathode is too small. The start-up diode D102 serves as a start-up conduction function of the first power supply VBAT _ M. After the first power supply VBAT _ M is output through the first MOS transistor Q100, the start diode D102 is turned off, so that the start diode D102 is prevented from consuming electric energy. The power damage of the start diode D102 is reduced. When the output terminal of the second power supply VBUS _4V has a power supply output, the gate of the first MOS transistor Q100 is connected to the input terminal of the output terminal of the second power supply VBUS _4V through the resistor R102. A high level voltage appears at the gate of the first MOS transistor Q100, and at this time, the on condition is not satisfied between the gate and the source of the first MOS transistor Q100, and the first MOS transistor Q100 is turned off. At this time, the first power supply VBAT _ M stops outputting. And the current of the output end of the second power supply VBUS _4V is directly output to each circuit module of the intelligent door lock, so as to supply power to each circuit module of the intelligent door lock.

In the embodiment of the invention, the power supply starting circuit 21041 is formed by the starting diode D102, the first MOS transistor Q100, the resistor R102 and the resistor R103, and the first power supply VBAT _ M and the second power supply VBUS _4V are selectively output, so that the circuit is simple to use and low in production cost.

Referring to fig. 6, further, in an embodiment of the present invention, the power supply start circuit 21041 further includes a diode D103, an anode of the diode D103 is connected to the output terminal of the second power supply VBUS _4V, and a cathode of the diode D103 is connected to a cathode of the start diode D102. The current of the output end VBUS _4V of the second power supply VBUS _4V is directly output to each circuit module of the intelligent door lock through the diode D103, and the power is supplied to each circuit module of the intelligent door lock. Due to the one-way conductivity of the diode D103, the reverse-flow of the output power is prevented.

Referring to fig. 6, further, in an embodiment of the present invention, the power start circuit 21041 further includes: and a second MOS transistor Q101, a gate of the second MOS transistor Q101 being connected to the gate of the first MOS transistor Q100, a source of the second MOS transistor Q101 being connected to the source of the first MOS transistor Q100, and a drain of the second MOS transistor Q101 being connected to the drain of the first MOS transistor Q100. Specifically, the second MOS transistor Q101 and the first MOS transistor Q100 are connected in parallel, so that the current output by the first power supply VBAT _ M can be increased, and the first MOS transistor is prevented from being burnt out when overcurrent. In other embodiments of the present invention, a plurality of second MOS transistors Q101 may be connected in parallel. To increase the amount of current output by the first power supply VBAT _ M. And the second MOS transistor Q101 is also a P-type MOS transistor. In the embodiment of the present invention, the first MOS transistor Q100 and the second MOS transistor Q101 are MOS transistors of the same type. Therefore, the first MOS transistor Q100 and the second MOS transistor Q101 can be turned on simultaneously, and the first power supply VBAT _ M is directly output to provide a power supply for the smart door lock.

Referring to fig. 6, further, in an embodiment of the present invention, the power supply selection circuit 40 further includes: the power supply protection circuit 21042, the power supply protection circuit 21042 includes first fuse F100, and the negative pole of start diode D102 passes through first fuse F100 and is connected with main motor drive circuit, from motor drive circuit, main bluetooth module and from bluetooth module (each circuit module of intelligent lock). Because the first fuse F100 has the characteristic of overcurrent blowing, the first fuse F100 can be burnt by the first fuse F100 when the output current is overlarge, and the circuit board is prevented from being burnt out due to the overheating caused by the overlarge current caused by short circuit.

Referring to fig. 6, further, in an embodiment of the present invention, the power supply protection circuit 21042 further includes a second fuse F101, and a cathode of the start diode D102 is connected to each standby circuit module of the intelligent door lock through the second fuse F101. Through providing second fuse F101 and being parallelly connected with first fuse F100, second fuse F101 output is as stand-by power supply output, for each stand-by circuit module power supply of intelligent lock, after first fuse F100 was burnt out, each stand-by circuit module power supply of accessible second fuse F101 intelligent lock unblanked through each stand-by circuit. The addition of the second fuse F101 provides a double safety for the power supply of the smart door lock. For example, the power can be supplied to the main unlocking module of the intelligent door lock through the first fuse F100 to ensure the normal operation of the intelligent door lock, the power can be supplied to the auxiliary unlocking module (standby circuit module) of the intelligent door lock through the second fuse F101, and when the main unlocking module breaks down, the auxiliary unlocking module can assist the user to continue unlocking, so that the power supply and the unlocking stability of the intelligent door lock can be ensured. The use experience of the user is improved.

Referring to fig. 7, further, in one embodiment of the present invention, the first power supply circuit 2102 includes: the battery power supply circuit 21022, the battery power supply circuit 21022 includes a first battery 210221, and the first battery 210221 is connected to the power supply selection circuit 40 to provide a first power supply VBAT _ M. The first battery 210221 provides the first power supply VBAT _ M, and as shown in fig. 7, the output terminal of the first battery 210221 is connected in parallel with the multi-path filtering capacitors C100-C102, and the output power voltage of the first battery 210221 can be further filtered by the multi-path filtering capacitors C100-C102 to provide a more stable dc power supply voltage. In another embodiment of the present invention, the output terminal of the first battery 210221 may be further connected in parallel with a TVS diode, and the TVS diode is used to ensure that energy is discharged to the ground when there is static electricity or high voltage outside, so as to ensure that the back-end circuit is not burned out.

Referring to fig. 7, further, in an embodiment of the present invention, the battery power supply circuit 21022 further includes a second battery 210222, and a second battery 210222 is connected in series with the first battery 210221 and is connected to the power supply selection circuit 40 to provide the first power supply. Through two way batteries, can further guarantee the stability of first power supply source's power supply to and more power supply volume guarantee the long-term stable power supply of intelligent lock.

Referring to fig. 7, in an embodiment of the present invention, the first power supply circuit 2102 further includes a battery voltage detection circuit 21021, and the battery voltage detection circuit 21021 is respectively connected to the input terminal of the first power supply VBAT _ M and the controller for performing voltage detection on the first power supply VBAT _ M. As shown in fig. 7, the battery voltage detection circuit 21021 includes a resistor R100 and a resistor R101, one end of the resistor R100 is connected to the power output end VBAT _ M of the battery, the other end of the resistor R100 is connected to one end of the resistor R101, the other end of the resistor R101 is connected to the reference ground, a common end of the resistor R100 and the resistor R101 is connected to a voltage detection end of the controller, the output voltage of the battery can be fed back to the voltage detection end of the controller through voltage division of the resistor R100 and the resistor R101, and the controller can obtain the power voltage of the battery, which outputs the first power supply VBAT _ M, through the battery voltage detection circuit 21021. When the electric quantity is insufficient, the user can be prompted to access the external power supply so as to ensure normal power supply.

Further, referring to fig. 8, in an embodiment of the present invention, the second power supply circuit 2103 includes: the power supply chip U100 is used for converting an input power supply into a second power supply VBUS _ 4V. The power supply chip U100 outputs the set power supply voltage to supply power to each circuit module of the intelligent door lock. In an embodiment of the present invention, the second power supply circuit 2103 is a step-down circuit for stepping down and outputting the external input power.

Referring to fig. 1 and 9, further, in an embodiment of the present invention, the communication and driving circuit board further includes: and the GSM module 40 is connected with the master Bluetooth module 10 and/or the slave Bluetooth module 20 and is used for wirelessly communicating with the server. The GSM module 40 communicates with the remote server to receive a client signal of the user through the remote server, thereby implementing remote unlocking control of the client.

Referring to fig. 9, further, in an embodiment of the present invention, the communication and driving circuit board further includes a capacitor power supply circuit 22, and the capacitor power supply circuit 22 is connected to the dual power supply circuit 21 and the remote wireless communication module (e.g. the GSM module 40), respectively, for supplying power to the remote wireless communication module. Because the GSM module 40 needs a larger current amount during communication, the first power supply can adopt a No. 5 dry battery, the output current is smaller, and the power supply requirement when the GSM module 40 is difficult to be fully communicated is difficult to be met, and the capacitor power supply circuit 22 can provide a larger instantaneous current amount for the GSM module 40 according to the energy storage characteristic of the battery capacitor, so that the GSM module 40 can be ensured to normally communicate.

Referring to fig. 10, in one embodiment of the present invention, the capacitive supply circuit 22 includes: the power supply circuit comprises a main power supply circuit 2201 and a capacitor circuit 2202, wherein the main power supply circuit 2201 and a dual-power supply circuit 21 are used for converting power supply voltage output by the dual-power supply circuit 21 into a stable first power supply; the main power supply circuit 2201 can convert the power supply voltage output by the dual power supply circuit 21 into the power supply voltage of the 2G \3G or 4G module power supply 40 to supply power for the 2G \3G or 4G module 40.

The capacitor circuit 2202 includes a battery capacitor, one end of the battery capacitor is connected to the first power supply output terminal of the main power supply circuit 2201, and the other end of the battery capacitor is connected to the reference ground. The battery capacitor is connected in parallel to the output end of the main power supply circuit 2201, so that the main power supply circuit 2201 can charge the battery capacitor, and when the GSM module 40 performs communication, the battery capacitor discharges, thereby supplying power to the GSM module 40. In the embodiment of the invention, the battery capacitor is a high-capacity capacitor, so that the electric quantity requirement during GSM communication can be ensured.

According to the embodiment of the invention, the large capacitor is connected in parallel at the output end of the main power supply circuit 2201, so that instantaneous large current can be provided to supply power to the communication module, particularly the mobile 2G \3G or 4G module.

Referring to fig. 10, further, in an embodiment of the present invention, the capacitor circuit 2202 further includes: and the diode D200 and the battery capacitor are connected with the power supply output end of the main power supply circuit 2201 through the diode D200. The anode of the diode D200 is connected to the power output terminal of the main power supply circuit 2201, and the cathode of the diode D200 is connected to one end of the battery capacitor. As shown in fig. 10, a diode D200 is disposed between the main power supply circuit 2201 and the capacitor circuit 2202 to prevent the current on the battery capacitor from flowing back to the main power supply circuit 2201, thereby ensuring the reliability of the circuit; meanwhile, the diode D200 has voltage drop, and the diode D200 is connected to ensure that the charging voltage is not higher than the maximum charging voltage of the battery capacitor.

Referring to fig. 10, further, in an embodiment of the present invention, the main power supply circuit 2201 includes: the power supply chip U203 and the chip peripheral circuit, the chip peripheral circuit is connected with the power supply chip U203. The input power supply voltage may be converted in voltage value by the power supply chip U203. And by setting the peripheral circuit, the output voltage value of the power supply chip U203 can be set to provide the set power supply voltage for the 2G/3G or 4G mobile communication module.

Referring to fig. 10, further, in an embodiment of the present invention, the chip peripheral circuit further includes: one end of the resistor R206 is connected with the voltage output end VOUT of the power supply chip U203, the other end of the resistor R206 is connected with the voltage regulation end ADJ of the power supply chip, one end of the resistor R208 is connected with the other end of the resistor R206, and the other end of the resistor R208 is connected with the reference ground. The output voltage of the power supply chip is divided by the resistor R206 and the resistor R208 and then fed back to the voltage adjusting terminal ADJ of the power supply chip, and the output voltage of the power supply chip is adjusted by the voltage adjusting terminal ADJ. By changing the resistance values of the resistor R206 and the resistor R208, the output voltage of the power chip can be adjusted to meet the voltage requirement of the 2G/3G or 4G mobile communication module.

Referring to fig. 10, further, according to an embodiment of the present invention, the chip peripheral circuit further includes: one end of the capacitor C229 and one end of the capacitor C229 are connected to the voltage regulation end of the power supply chip U203, and the other end of the capacitor C229 is connected to the reference ground. The capacitor C229 is connected to the voltage regulation end of the power supply chip in parallel, so that the feedback voltage of the voltage regulation end VOUT is a stable value, and the stability of the output voltage of the power supply chip U203 is ensured; radio frequency interference signals introduced from the output end of the chip U203 and lines can be filtered, so that power input to the mobile communication modules such as the 2G and the like is interference-free, and the mobile communication modules such as the 2G and the like are ensured not to be interfered.

Referring to fig. 10, further, in an embodiment of the present invention, the chip peripheral circuit further includes: one end of the capacitor C226 is connected to the voltage output terminal VOUT of the power chip U203, and the other end of the capacitor C226 is connected to the reference ground. The capacitor C226 is connected to the output end VOUT of the power supply chip in parallel, so that the voltage of the output end VOUT is a stable value, and the stability of the output voltage of the power supply chip is further ensured; radio frequency interference signals introduced from the output end of the chip U203 and lines can be filtered, so that power input to the mobile communication modules such as the 2G and the like is interference-free, and the mobile communication modules such as the 2G and the like are ensured not to be interfered.

Referring to fig. 11, further, in an embodiment of the present invention, the slave bluetooth module 20 includes: a bluetooth transceiver antenna 205 and a drop detection circuit 203, wherein the bluetooth transceiver antenna 205 is connected with the slave bluetooth module 20, and the bluetooth transceiver antenna 205 is used for transceiving bluetooth wireless signals input and output from the bluetooth module 20; the drop detection circuit 203 is connected to the slave bluetooth module 20 and the bluetooth transceiver antenna 205, and is configured to detect whether the bluetooth transceiver antenna 205 is dropped. As shown in fig. 11, in the embodiment of the present invention, the bluetooth transceiver antenna 205 is detachably connected to the bluetooth module through the antenna interface 204. During use, the bluetooth transceiver antenna 205 may be detached from the antenna interface 204, thereby preventing signals from being transmitted and received through the bluetooth transceiver antenna 205.

The antenna falling detection circuit 203 provided by the embodiment of the invention can transmit the installation state of the Bluetooth antenna to the Bluetooth module by detecting the installation state of the Bluetooth antenna, detect whether the Bluetooth antenna falls off or not, and transmit the connection state of the Bluetooth antenna to the background server in other communication modes when the Bluetooth antenna falls off is detected, so that a supplier can conveniently acquire the state of the Bluetooth antenna or whether the Bluetooth antenna falls off or not, and after acquiring relevant information through the background server, the supplier can arrange for post-sale personnel to get on the door to repair the fault products of users in time.

Referring to fig. 12 and 13, further, in an embodiment of the present invention, the dropout detection circuit 203 includes: the Bluetooth module comprises an inductor L809 and a resistor R810, one end of the resistor R810 is connected with a power supply VDD2V8, the other end of the resistor R810 is connected with one end of the inductor L809, the other end of the inductor L809 is connected with one end of the Bluetooth transceiving antenna 205, the other end of the Bluetooth transceiving antenna 205 is connected with a reference ground, and a common end of the inductor L809 and the resistor R810 is connected with the slave Bluetooth module 20.

As shown in fig. 12 and 13, when the bluetooth antenna is not detached, the inductor L809 is connected to the reference ground through the bluetooth antenna, the level of the common terminal of the inductor L809 and the resistor R810 is pulled low, and the bluetooth transceiver antenna 205 can be obtained to be detached by obtaining that the level of the common terminal of the inductor L809 and the resistor R810 is low from the bluetooth module 20; when the bluetooth antenna falls off, the common terminal of the inductor L809 and the bluetooth transceiving antenna 205 is disconnected from the reference ground, and the detection terminal of the common terminal P030_ mbtan _ DET of the inductor L809 and the resistor R810 is at a high level. When the bluetooth module 20 acquires that the detection end of the P030_ MBTANT _ DET is at a high level, it can detect that the bluetooth transceiving antenna 205 has fallen off.

It should be noted that the other end of the inductor L809 is connected to the rf output end of the bluetooth module 20, and because the 2.4GHZ rf signal output by the bluetooth module 20, the inductor L809 plays a role in isolating the bluetooth 2.4GHZ rf signal, so as to avoid interference of the bluetooth 2.4GHZ rf signal with the signal at the P030_ mbtan _ DET detection end. After the isolation of the inductor L809, the 2.4GHZ rf signal output by the bluetooth module 20 does not affect the normal detection of the bluetooth transceiving antenna 205 by the antenna detection circuit 10. In the embodiment of the present invention, the inductor L809 and the resistor R810 are connected to the bluetooth transceiver antenna 205 and the bluetooth module 20, so as to detect the bluetooth transceiver antenna 205, and the installation state of the bluetooth transceiver antenna 205 can be obtained through the level value at one end of the inductor L809, so as to detect whether the bluetooth transceiver antenna 205 is detached, and transmit the level signal indicating whether the bluetooth transceiver antenna 205 is detached to the bluetooth module 20, so as to detect whether the bluetooth transceiver antenna 205 is detached in real time through the bluetooth module 20. The antenna detection circuit is simple to use, low in production cost and high in detection reliability of the Bluetooth transceiving antenna 205.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

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