CN218768247U

CN218768247U - Electronic lock and expansion device thereof

Info

Publication number: CN218768247U
Application number: CN202223271681.4U
Authority: CN
Inventors: 周若谷; 李振华
Original assignee: Hangzhou Qiwei Technology Co ltd
Current assignee: Hangzhou Qiwei Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-03-28
Anticipated expiration: 2032-12-07

Abstract

This specification provides an electronic lock and extension device thereof, the device includes: the first input interface is connected with a first output interface of a main control board of the electronic lock and used for receiving a driving signal provided by the main control board; the second output interface is connected with a second input interface of a power source of the electronic lock; the antenna is coupled with the portable wireless energy supply equipment to collect the wireless energy signal provided by the portable wireless energy supply equipment and convert the wireless energy signal into an electric energy signal; the energy storage unit is connected with the antenna and used for storing the electric energy signal output by the antenna; the control unit is connected with the second output interface, the antenna and the energy storage unit; the electronic lock is used for generating a first driving signal according to the electric energy signal or generating a second driving signal according to the signal characteristic of the driving signal provided by the main control panel, and providing the first driving signal or the second driving signal to the power source through the second output interface so that the power source drives the electronic lock to perform an unlocking action. The embodiment of the specification can reduce the difficulty, risk and cost of modifying the active electronic lock.

Description

Electronic lock and expansion device thereof

Technical Field

The present disclosure relates to electronic locks, and particularly to an electronic lock and an expanding device thereof.

Background

Currently, most electronic locks (called electronic door locks for short) are active and usually powered by batteries. Therefore, the active electronic lock is easy to be unlocked due to the exhaustion of the battery. In addition, the spare mechanical key is usually not carried about, and if unlocking is desired, only the active electronic lock is damaged mechanically, so that certain economic loss is caused, and a lot of troubles are caused to life.

SUMMERY OF THE UTILITY MODEL

An embodiment of the present disclosure provides an electronic lock and an expansion device thereof, which overcome the problem that an active electronic lock cannot be unlocked due to the exhaustion of battery power at low cost and low risk.

To achieve the above object, in one aspect, an embodiment of the present specification provides an expansion device of an electronic lock, including:

the first input interface is connected with a first output interface of a main control board of the electronic lock and used for receiving a driving signal provided by the main control board;

the second output interface is connected with a second input interface of a power source of the electronic lock;

the antenna is coupled with the portable wireless energy supply equipment so as to collect the wireless energy signal provided by the portable wireless energy supply equipment and convert the wireless energy signal into an electric energy signal;

the energy storage unit is connected with the antenna and used for storing the electric energy signal output by the antenna;

the control unit is respectively connected with the second output interface, the antenna and the energy storage unit; the electronic lock is used for generating a first driving signal according to the electric energy signal, or receiving a second driving signal provided by the main control panel based on the first input interface, and providing the first driving signal or the second driving signal to the power source through the second output interface, so that the power source drives the locking and unlocking mechanism of the electronic lock to execute an unlocking action.

In an expansion device of an electronic lock according to an embodiment of the present specification, the expansion device includes a circuit board, and at least some of the first input interface, the second output interface, and the antenna are integrated on the circuit board, so that the expansion device forms an expansion board.

In the expanding device of an electronic lock of an embodiment of the present specification, the power source includes a motor.

In the expanding device of an electronic lock according to an embodiment of the present specification, the expanding device further includes:

and the motor signal detection unit is connected with the control unit and used for detecting the signal characteristics of the driving signal received by the first input interface and feeding back the detection result to the control unit so as to realize the unlocking action adjustment control of the electronic lock.

In the expansion device of the electronic lock of the embodiment of the present specification, the antenna includes an NFC antenna; the control unit is also used for performing handshaking communication with the portable wireless energy supply equipment through the NFC antenna.

In an expansion device of an electronic lock according to an embodiment of the present specification, the expansion device further includes:

the first voltage stabilizing module is connected with the energy storage unit and used for providing the electric energy signals stored by the energy storage unit to each device of a passive domain after voltage stabilizing processing; each device of the passive domain is a device that is activated and operates in a passive mode.

the rectification module is connected with the first input interface and used for rectifying the driving signal received by the first input interface;

the second voltage stabilizing module is connected with the rectifying module and used for performing voltage stabilizing processing on the driving signal rectified by the rectifying module to obtain a voltage stabilizing electric energy signal and supplying the voltage stabilizing electric energy signal to each device of an active domain; each device of the active domain is a device that is activated and operates in an active mode.

the safety module is used for detecting whether the portable wireless energy supply equipment has unlocking authority or not during handshake communication between the control unit and the portable wireless energy supply equipment;

when the portable wireless energy supply equipment has the unlocking right, the control unit generates a first driving signal according to the electric energy signal stored by the energy storage unit and provides the first driving signal to the power source through the second output interface.

and the indicating unit is connected with the control unit and used for receiving the state signal provided by the control unit and outputting a corresponding state prompt according to the state signal.

In another aspect, an embodiment of the present specification further provides an electronic lock, where the electronic lock includes: main control panel, power supply and foretell extension device.

As can be seen from the above technical solutions provided by the embodiments of the present specification, in the embodiments of the present specification, an expansion device is added between a main control board and a power source of an active electronic lock, and a passive unlocking function is integrated on the expansion device, and the expansion device may be coupled with a portable wireless power supply device to receive wireless energy provided by the portable wireless power supply device and provide the wireless energy to the power source of the active electronic lock, so that the power source drives an unlocking mechanism of the electronic lock to perform an unlocking action. Therefore, when the active electronic lock cannot be unlocked due to the fact that the battery power is exhausted, the unlocking action can be executed through the passive unlocking function of the expansion device. Therefore, on the basis that the original structure of the active electronic lock is hardly changed, the passive unlocking function of the active electronic lock is expanded, the difficulty, risk and cost of modifying the electronic lock are greatly reduced, and the problem that the active electronic lock cannot be unlocked due to the exhaustion of the electric quantity of the battery is solved in a low-cost and low-risk mode.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:

FIG. 1 illustrates a block diagram of an electronic lock in some embodiments of the present description;

FIG. 2 illustrates an interaction diagram of an electronic lock with a portable wireless power-enabled device in accordance with some embodiments of the present description;

FIG. 3 is a schematic diagram illustrating the components of an electronic lock in some embodiments of the present disclosure;

fig. 4 is a block diagram illustrating the structure of an electronic lock according to other embodiments of the present disclosure.

[ description of reference ]

100. A main control board;

101. an original drive output interface;

102. a battery interface;

103. an expansion interface;

200. an expansion board;

201. a drive input interface;

202. a drive output interface;

203. an NFC antenna;

204. a control unit;

205. an energy storage unit;

206. a first voltage stabilization module;

207. an indicating unit;

208. a security module;

209. a rectification module;

210. a second voltage stabilization module;

211. a motor signal detection unit;

212. an NFC interface;

300. a motor;

301. a motor input interface;

400. provided is a smart phone.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification.

An electronic lock (such as an electronic coded lock and an intelligent lock) is an electronic product which controls a circuit or a chip to work by inputting a password (such as a digital password, a fingerprint, card swiping, face recognition and the like) so as to control the closing of a mechanical switch and complete unlocking and locking tasks, and can be applied to any scene (such as entrance guard and the like) needing to use a lock. In the embodiments of the present specification, the electronic lock generally refers to an active electronic lock (generally powered by a battery).

In view of the problem that the conventional active electronic lock cannot be unlocked due to the fact that the battery capacity of the conventional active electronic lock is exhausted, the embodiment of the specification modifies the conventional active electronic lock, an expansion device is additionally arranged between a main control board and a power source of the active electronic lock, a passive unlocking function is integrated on the expansion device, and the expansion device can be coupled with a portable wireless energy supply device to receive wireless energy provided by the portable wireless energy supply device and provide the wireless energy to the power source of the active electronic lock, so that an unlocking mechanism of the electronic lock is driven by the power source to execute an unlocking action. In this way, when the active electronic lock (hereinafter, referred to as an electronic lock for convenience of description) cannot be unlocked due to the exhaustion of the battery, the unlocking action can be performed by the passive unlocking function of the expansion device. Therefore, the passive unlocking function of the electronic lock is expanded on the basis that the original structure of the electronic lock is hardly changed, the difficulty, risk and cost of modifying the electronic lock are greatly reduced, and the problem that the active electronic lock cannot be unlocked due to the exhaustion of the electric quantity of the battery is solved in a low-cost and low-risk mode.

In some embodiments, the expansion device may be in the form of a circuit board, and some or all of the constituent components of the expansion device may be integrated on the circuit board, so that the expansion device forms an expansion board (i.e., an expansion main control board) to facilitate installation and improve reliability thereof.

In some embodiments, the power source may be an electric motor, or any other component that can convert electric energy into kinetic energy and is suitable for driving a locking and unlocking mechanism of an electronic lock, and therefore, the embodiment of the present disclosure is not limited thereto.

In some embodiments, the portable wireless power supply device may be any portable electronic device capable of outputting a wireless power signal to the outside. Such as a mobile terminal (i.e. a smartphone, e.g. a NFC (Near Field Communication) enabled smartphone, etc.), a tablet, a personal digital assistant or a smart wearable device, etc. Wherein, wearable equipment of intelligence can include intelligent bracelet, intelligent wrist-watch, intelligent glasses or intelligent helmet etc..

In some embodiments, referring to fig. 1, the electronic lock may include a main control board 100, a motor 300, and an expansion board 200 disposed between the main control board 100 and the motor 300, that is, only the expansion board 200 needs to be connected in series between the main control board 100 and the motor 300, and thus, almost no existing design is changed, and the change cost and risk are very low. As shown in fig. 2, the expansion board 200 may be coupled to a smart phone 400 as a portable wireless power supply device to receive wireless power supplied by the smart phone 400 and supply the wireless power to the motor 300, so that the motor 300 drives a locking and unlocking mechanism (not shown in fig. 2) of the electronic lock to perform an unlocking action. Therefore, compared with the main control board 100, the expansion board 200 can obtain electric energy and complete the control work of the motor 300 and the like by extracting the wireless energy provided by the portable wireless energy supply device for a short time, so as to realize unlocking.

As shown in fig. 3, the main control board 100 is responsible for controlling the whole lock body of the electronic lock, including implementing functions of security and identity authentication, motor driving, sensing, alarming, and the like. The main control board 100 has a battery interface 102 for connecting a battery pack. The battery pack is responsible for supplying power to the whole lockset (generally, a plurality of AA dry batteries are connected in series, in parallel or in a mixed mode). The main control board 100 further has an expansion interface 103 for connecting various peripherals and sensors (such as a fingerprint sensor, a keyboard, a display module, a speaker, etc.).

The motor 300 is used for driving a locking and unlocking mechanism of the electronic lock to perform unlocking and locking actions. In some embodiments, the motor 300 may be a small dc brushed motor having two input points. The forward and reverse rotation of the motor 300 can be controlled by applying a positive or negative voltage to the two input points. To match the motor 300, the motor input interface 301 may have two wires to connect two input points of the motor 300. When the motor input interface 301 outputs a positive voltage (the first wire is connected to VCC, and the second wire is connected to GND), the motor 300 rotates forward; when the motor input interface 301 outputs a negative voltage (the first wire is connected to GND, and the second wire is connected to VCC), the motor 300 rotates reversely.

As shown in fig. 3 and fig. 4, the expansion board 200 may include a driving input interface 201, a driving output interface 202, an NFC antenna 203 (which may also be another radio frequency antenna), a control unit 204, and an energy storage unit 205.

The driving input interface 201 may be connected to the original driving output interface 101 of the main control board 100 (i.e. a conventional driving output interface before the electronic lock is modified), so as to receive a driving signal output by the main control board 100 through the original driving output interface 101; the drive output interface 202 is connected to a motor input interface 301 of the motor 300. Therefore, when the traditional active unlocking function of the electronic lock is used for unlocking, the expansion board 200 can be used as a relay to forward the driving signal output by the main control board 100 through the original driving output interface 101 to the motor 300, so that the traditional active unlocking function of the main control board 100 is reserved. It should be noted that the forwarding in the embodiment of the present specification is not direct forwarding (a specific forwarding process will be described below).

NFC antenna 203 is coupled to smartphone 400 to collect and convert wireless energy signals (e.g., NFC signals) provided by smartphone 400 into electrical energy signals. The energy storage unit 205 is connected to the NFC antenna 203 to store the power signal output by the NFC antenna 203. The control unit 204 is connected with the driving input interface 201, the driving output interface 202, the NFC antenna 203 and the energy storage unit 205 respectively; the control unit 204 may be configured to generate a driving signal according to the power signal, or generate a driving signal according to a signal characteristic of the driving signal provided by the main control board 100, and provide the generated driving signal to the motor 300 through the driving output interface 202, so that the motor 300 drives the unlocking mechanism of the electronic lock to perform an unlocking action, so that when the electronic lock cannot be unlocked due to the exhaustion of the battery power, the unlocking action may also be performed through the passive unlocking function of the expansion board 200. Of course, in the case that the battery power of the electronic lock is sufficient, the user may also choose to unlock the electronic lock by using the passive unlocking function of the expansion board 200.

Therefore, the electronic lock of the embodiment of the present specification has two operation modes: an active mode and a passive mode. In the active mode, the electric energy required by the operation of the electronic lock is supplied by the battery pack inside the electronic lock, and the main control board 100 sends out the driving signal, and the expansion board 200 forwards the driving signal from the main control board 100. In the passive mode, the electric energy required by the electronic lock is supplied by the external smart phone 400 and the like, and the expansion board 200 sends out a driving signal; in the passive mode, the main control board 100 does not send out a driving signal, and the expansion board 200 can completely control the motor 300 without depending on the main control board 100. In a word, in the passive mode, the expansion board 200 directly controls the operation of the motor 300 of the electronic lock according to the instruction of the smart phone 400; in the active mode, the expansion board 200 forwards the control signal of the main control board 100 to control the operation of the electronic lock.

In the embodiment of the specification, the two working modes can be automatically switched without manual setting in advance, and a user can independently select any one working mode according to needs, so that the use experience of the user is improved. For example, when the user uses smartphone 400 to approach and couple with NFC antenna 203 of the electronic lock, it indicates that the user has selected the passive mode. For example, when an unlock password is input by operating a keyboard or a fingerprint sensor or the like connected to the main control board 100, it indicates that the user selects the active mode.

The NFC antenna 203 is used to enable communication and energy transfer between the control unit 204 and the smartphone 400 based on NFC signals. When the user holds the smart phone 400 close to the NFC antenna 203, the smart phone 400 may be coupled to the NFC antenna 203 and transmit signals and energy to the control unit 204 through the NFC antenna 203 and the NFC interface 212; the control unit 204 generates a drive signal using the received energy and outputs it to the motor 300 through the drive output interface 202. In order to improve the efficiency of wireless energy transmission, the NFC antenna 203 may be disposed on the housing of the electronic lock, instead of being integrated in the expansion board 200 (the expansion board 200 is disposed in the housing of the electronic lock), and connected to the control unit 204 through the NFC interface 212.

Referring to fig. 4, in some embodiments, control unit 204 may also handshake with smartphone 400 via NFC antenna 203 to confirm each other's identity before drawing power from smartphone 400 via NFC antenna 203. Thus, the expansion board may also have integrated thereon a security module 208. The security module 208 may detect whether the smartphone 400 has an unlocking right during handshake communication between the control unit 204 and the smartphone 400; when the smartphone 400 does not have unlocking authority, the control unit 204 may terminate the current operation (i.e., terminate handshake communication with the smartphone 400) and return an operation failure prompt to the smartphone 400. When the smartphone 400 has the unlocking right, subsequent operations (for example, generating a driving signal according to the power signal stored in the energy storage unit 205 and providing the driving signal to the motor 300 via the driving output interface 202) may be continuously performed. Therefore, the unlocking of illegal users can be prevented, and the unlocking safety can be guaranteed.

In some embodiments, the security module 208 may be implemented in a form separate from a hardware chip external to the control unit 204. For example, in an exemplary embodiment, the security Module 208 may be a Trusted Platform Module (TPM). The safety chip is a device which can independently generate a key, encrypt and decrypt, has a separate processor and a storage unit inside, and can store the key and the characteristic data to provide encryption and safety authentication services. The encryption is carried out by using the security chip, the key is stored in hardware, and stolen data cannot be decrypted, so that the privacy and the data security are protected. In other embodiments, the security module 208 may also be integrated within the control unit 204, implemented in the form of hardware components or software.

The security module 208 may authenticate the identity of the smartphone 400 using either a symmetric key or an asymmetric key. Only when the security module 208 confirms that the smart phone 400 holds the correct key through authentication, the control unit 204 controls the motor 300 to operate to unlock. It should be noted that the main control board 100 of the electronic lock generally has a security module, but the security module and the security module 208 on the expansion board 200 are independent from each other and do not affect each other. In the active mode, the security module on the main control board 100 is responsible for performing security control; in the passive mode, the security module 208 on the control unit 204 is responsible for performing security control.

Referring to fig. 4, in some embodiments, a motor signal detection unit 211 is further integrated on the expansion board 200. The motor signal detection unit 211 is respectively connected to the driving input interface 201 and the control unit 204, and is configured to detect a signal characteristic that the driving input interface 201 receives a driving signal (i.e., the driving signal provided by the main control board 100), and feed back a detection result to the control unit 204, so as to implement adjustment and control of an unlocking motion of the electronic lock.

That is, in the active operation mode, the driving signal provided by the main control board 100 cannot be directly connected to the driving output interface 202, but is input to the expansion board 200 through the driving input interface 201. The expansion board 200 extracts signals (i.e., signal characteristics) and energy from the driving signals provided by the main control board 100, the extracted signals are used to reconstruct driving signals that are the same as or equivalent to the driving signals provided by the main control board 100 (with an error within an allowable range), and the extracted energy is used to power each device in the active domain.

The reason why the expansion board 200 does not directly supply the driving signal supplied from the main control board 100 to the motor 300 through the driving output interface 202, and reconstructs the driving signal after extracting the signal features thereof is that: if the driving signal provided by the main control board 100 is directly provided to the motor 300, in the active mode, the driving signal may be inversely serially connected to the passive domain, which may easily cause energy loss and even damage to the passive domain device. Similarly, in the passive mode, the driving signal is also anti-series connected into the active domain, which causes energy loss and even damages to the active domain device. The driving signal provided from the main control board 100 cannot be directly provided to the motor 300 in either the active mode or the passive mode.

In some embodiments, the extracted signal feature may be a polarity type of the drive signal. The polarity types of the driving signals may be a forward driving signal, a reverse driving signal, and a driving stop signal. For example, two terminals of the driving input interface 201 are a signal line a and a signal line B, respectively, and if the voltage of the signal line a is higher than the voltage of the signal line B, it indicates that the driving signal is a forward driving signal for driving the motor to rotate forward; if the voltage of the signal line A is lower than that of the signal line B, the driving signal is a reverse driving signal for driving the motor to reversely rotate; if the voltage of the signal line A and the voltage of the signal line B are equal, the driving signal is indicated to be a driving stopping signal for controlling the motor to stop rotating.

For example, in an exemplary embodiment, the main control board 100 should provide a forward driving signal, and if a reverse driving signal is provided abnormally and erroneously, so that the electronic lock cannot complete the switching of the locking and unlocking states, at this time, the control unit 204 may generate the forward driving signal and provide the forward driving signal to the motor 300 through the driving output interface 202, thereby implementing the adjustment and control of the unlocking action of the electronic lock, and achieving the purpose of reliably switching the locking and unlocking states. Of course, the extracted signal characteristics may include waveform characteristics (e.g., amplitude, frequency, phase, etc.) of the signal in addition to the polarity type of the driving signal, so as to enable the reconstructed driving signal to be identical or equivalent to the driving signal provided by the main control board 100.

Referring to fig. 4, in some embodiments, a first voltage stabilization module 206 is further integrated on the expansion board 200. The first voltage stabilizing module 206 is connected to the energy storage unit 205, and is configured to perform voltage stabilizing processing on the electric energy signal stored in the energy storage unit 205, and provide the electric energy signal to the control unit 204, the security module 208, and the like, so as to supply power to the electronic lock in a passive mode.

Referring to fig. 4, in some embodiments, a rectifier module 209 may also be integrated on the expansion board 200. The rectifying module 209 is connected to the driving input interface 201, and configured to perform a rectifying process on a driving signal (provided by the main control board 100) received by the driving input interface 201, so as to convert the driving signal into a direct current driving signal.

Referring to fig. 4, in some embodiments, a second voltage stabilization module 210 may be further integrated on the expansion board 200. The second voltage stabilizing module 210 is connected to the rectifying module 209, and is configured to perform voltage stabilizing processing on the driving signal rectified by the rectifying module 209 to obtain a voltage-stabilized power signal, and provide the voltage-stabilized power signal to the control unit 204 and the safety module 208.

Referring to fig. 4, in some embodiments, an indication unit 207 may be further integrated on the expansion board 200. The indicating unit 207 is connected to the control unit 204, and configured to receive the status signal provided by the control unit 204 and output a corresponding status prompt according to the status signal. That is, the control unit 204 may obtain the operating state of the electronic lock through the energy storage unit 205, the security module 208, and the like, and output a state prompt through the indication unit 207. For example, when the electronic lock is switched from the locked state to the unlocked state, the control unit 204 may output a state indication that the lock is unlocked through the indicating unit 207.

With continued reference to fig. 4, based on the passive mode and the active mode of the electronic lock, the components of the expansion board 200 can be divided into two domains: passive domain and active domain. The passive domain includes devices that are activated and operated in a passive mode; the active domain includes devices that are activated and operated in an active mode; both domains have partially shared components. The passive domain includes: the control unit 204, the NFC interface 212, the energy storage unit 205, the first voltage stabilizing module 206, the indicating unit 207, the security module 208, and the driving output interface 202. The active domain includes: the driving circuit comprises a control unit 204, a motor signal detection unit 211, a driving input interface 201, a rectification module 209, a second voltage stabilization module 210 and a driving output interface 202.

The NFC interface 212 of the passive domain is connected to the NFC antenna 203. The NFC antenna 203 is connected to the control unit 204 through the NFC interface 212, and has a bidirectional data channel, that is, the control unit 204 may establish bidirectional communication with the external smart phone 400 through the NFC interface 212 and the NFC antenna 203. The NFC interface 212 is also connected to the power storage unit 205, and transfers the received energy to the power storage unit 205. The energy storage unit 205 is connected to the control unit 204 and reports dynamically the amount of power in the energy storage unit 205 thereto. The energy storage unit 205 is further connected to the first voltage stabilizing module 206, so as to release the stored energy, that is, after being stabilized by the first voltage stabilizing module 206, power is supplied to each device in the passive domain of the expansion board 200. The control unit 204 may establish two-way communication with the security module 208. The security module 208 is used for verifying whether the smartphone 400 has the unlocking right during the bidirectional communication between the control unit 204 and the smartphone 400. The control unit 204 is also connected to the indicating unit 207, and feeds back various status signals of the electronic lock to the user through the indicating unit 207. The control unit 204 is further connected with the driving output interface 202, and the driving output interface 202 is connected with the motor 300 of the electronic lock. The control unit 204 may control the rotation of the motor 300 via the drive output interface 202 to achieve unlocking or locking.

The drive input interface 201 of the active domain is connected with the motor output of the main control board 100 in the electronic lock. The driving input interface 201 is connected to a motor signal detection unit 211, and the motor signal detection unit 211 is used for detecting whether the motor output of the main control board 100 is in forward rotation, reverse rotation, or stalling. The motor signal detection unit 211 is connected to the control unit 204, and reports the detection result to the control unit 204. The driving input interface 201 is connected to the rectifying module 209, and transmits energy output by the main control board 100 to the rectifying module 209. The rectifier module 209 converts the energy into dc power. The rectifying module 209 is also connected to a second voltage stabilizing module 210. The second voltage stabilization module 210 stabilizes the dc power output by the rectification module 209 and supplies power to each device in the active domain. The rectifying module 209 is also connected to the driving output interface 202, and supplies power to the driving output interface 202 to drive the motor 300.

The workflow in the passive mode is described as follows:

when the smart phone 400 sends an NFC signal, the NFC antenna 203 couples the signal and energy to the NFC interface 212 when the smart phone 400 is close to the NFC antenna 203. The NFC interface 212 has a power-taking function, extracts energy in the NFC signal, and stores the energy in the energy storage unit 205 connected thereto. As the energy level of the energy storage unit 205 increases, the first voltage stabilization module 206 connected to the energy storage unit starts to operate, and it stabilizes the energy stored in the energy storage unit 205 to obtain dc power, and supplies the dc power to the components in the passive domain to start operating. The energy storage unit 205 reports the stored energy level in real time to the control unit 204. The NFC interface 212 also has an NFC communication function. After the first voltage stabilization module 206 starts to supply power, the control unit 204 performs bidirectional communication with the smartphone 400 through the NFC interface 212. The control unit 204 verifies whether the smartphone 400 has the operating right of the current lock using the connected security module 208. If not, the current operation is terminated, and an operation failure prompt is sent to the smart phone 400. The smartphone 400 and the control unit 204 may also exchange other information, such as the motor rotation direction, the currently stored energy, etc. When the control unit 204 senses that the energy stored in the energy storage unit 205 has reached a specified value, the control unit 204 controls the driving output interface 202 to drive the motor 300 to rotate, so as to unlock the lock.

The workflow in active mode is described as follows:

the main control board 100 outputs a driving signal to the driving input interface 201, and the rectifying module 209 connected to the driving input interface 201 extracts energy in the signal to be a dc voltage, and the dc voltage is regulated by the second voltage regulating module 210 to be supplied to the active domain components (i.e. each device in the active domain) to start their operation. The motor signal detection unit 211 connected to the driving input interface 201 detects a signal characteristic (e.g., polarity type, etc.) of the driving signal to predict a rotation direction of the motor 300, and reports the detection result to the control unit 204 in real time. The control unit 204 may control the driving output interface 202 to output the same driving signal as the main control board 100 to the motor 300 according to the report result, so as to drive the motor 300 to work, thereby achieving the purpose of reliable switching between the locking state and the unlocking state.

In both the active mode and the passive mode, the control unit 204 needs to be started, but the work task is completely different after the start. The control unit 204 needs to confirm the operation mode of the electronic lock after the activation. This can be achieved in several ways: the output of the first voltage stabilization module 206 and the second voltage stabilization module 210 is detected, the state of the NFC interface 212 is detected, the state of the energy storage unit 205 is detected, the output of the motor signal detection unit 211 is detected, and the like.

For example, when the output of the first voltage stabilization module 206 reaches a first set value; the NFC interface is in a communication state; the electric quantity of the energy storage unit 205 reaches a second set value; and/or when the output of the motor signal detection unit 211 reaches the third set value, it may be confirmed that the electronic lock is in the passive mode. When the output of the second voltage stabilizing module 210 reaches the first set value; NFC interface 212 is not in communication (e.g., handshaking communications of a portable wireless enabled device, etc.); the electric quantity of the energy storage unit 205 does not reach the second set value; and/or when the output of the motor signal detection unit does not reach the third set value, the electronic lock can be confirmed to be in the active mode.

Therefore, in the embodiment of the specification, the active mode and the passive mode do not have any physical switch, the electronic lock simultaneously supports the passive and active unlocking modes at any time, the user does not need to do any other actions except the unlocking action, the user only needs to operate according to the unlocking method (active: fingerprint, card swiping, password, face swiping and the like; passive: mobile phone, handset, special card reader and the like) of the active mode or the passive mode, the lock can automatically identify, and the corresponding unlocking process is realized.

In the passive mode, to save energy, the smartphone 400 may periodically send out NFC probe signals. The control unit 204 receives the signal and exchanges a handshake signal with the smart phone 400, and thereafter the smart phone 400 may continuously transmit the wireless energy signal.

In the passive mode, the control unit 204 can control the motor 300 to rotate for multiple times by driving the output interface 202 according to the needs of the lock structure and function. For example, the control unit 204 may control the motor 300 to rotate forward for 500ms, stop for 10s, and rotate backward for 300ms.

In the passive mode, parameters of the motor rotation, such as direction, time length, starting voltage, interval voltage, etc., can be transmitted to the control unit 204 by the smart phone 400 through NFC communication, and can be recorded inside the control unit 204 for later use.

Of course, in the passive mode, the parameters of the motor rotation, such as direction, time length, starting voltage, interval voltage, etc., can be preset internally by the control unit 204.

In some embodiments, the energy storage unit 205 may be formed of one or more storage media, including but not limited to electrolytic capacitors, ceramic capacitors, super capacitors, rechargeable batteries, and the like.

In some embodiments, the first and second

voltage stabilization modules

206 and 210 may be low dropout linear regulators (LDOs) or direct current converters (DC/DC).

In some embodiments, the driving output interface 202 may be formed by a dedicated motor driving chip, or may be formed by using other devices such as MOSFET.

In some embodiments, the motor signal detection unit 211 may be implemented by an I/O interface integrated in the control unit 204. The high-low contrast relation of the electric potentials of the two motor driving signals can be judged through the I/O, and the judgment of the polarity of the motor driving signals is realized.

In the passive mode, the control unit 204 may start to control the driving output interface 202 to perform the motor operation after the energy stored in the energy storage unit 205 is higher than the energy required to complete at least the unlocking motion or the locking motion. Even if the smart phone 400 is moved away to cause that power cannot be continuously supplied in the operation process, enough electric energy is available to ensure that the unlocking action or the locking action is completed.

In the passive mode, the control unit 204 sends various status signals to the smartphone 400, including but not limited to the current stored energy level, the current power draw, the current NFC signal strength, how much energy is currently still needed to be stored, the expected remaining time, and the like. The information may guide the user's operation through the organization of the smart phone 400, such as reducing the distance between the smart phone 400 and the NFC antenna 203, or changing the relative position between the smart phone 400 and the NFC antenna 203 to increase the receiving power.

In the passive mode, the control unit 204 may use a symmetric key or an asymmetric key algorithm for authentication of the smartphone 400.

In some embodiments, the communication protocol of NFC interface 212 with smartphone 400 includes, but is not limited to, the following: NFC-A, NFC-B, NFC-F, felicse:Sub>A and compatible or variant protocols of the above protocols. The frequencies used include, but are not limited to: 13.56MHz, 6.78MHz, 125Khz, etc.

In some embodiments, the signal that the indication unit 207 may issue includes, but is not limited to: any one or more of sound, light, vibration, radio frequency, etc.

In some embodiments, the control unit 204 may include a Microprocessor (MCU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), among others.

In some embodiments, the rectifier module 209 may have a lower conduction voltage drop to ensure that the drive output interface 202 may obtain enough power to drive the motor 300. Implementations of the rectifying module 209 include, but are not limited to, a schottky diode bridge rectifier, a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) bridge rectifier, and the like.

It should be noted that, in the above-described embodiments, the description has been made more from the unlocking side; if the electronic lock does not have an automatic locking function (for example, automatic locking after the door is closed), locking in the passive mode and the active mode is similar to the unlocking principle in the passive mode and the active mode, and details are not repeated here.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the various elements may be implemented in the same one or more software and/or hardware implementations of the present description.

It should also be understood that, in the embodiment of the present specification, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.

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 an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An expansion device for an electronic lock, comprising:

the antenna is coupled with the portable wireless energy supply equipment to collect the wireless energy signal provided by the portable wireless energy supply equipment and convert the wireless energy signal into an electric energy signal;

the control unit is respectively connected with the second output interface, the antenna and the energy storage unit; and the electronic lock is used for generating a first driving signal according to the electric energy signal or generating a second driving signal according to the signal characteristics of the driving signal provided by the main control panel, and providing the first driving signal or the second driving signal to the power source through the second output interface so that the power source drives the locking and unlocking mechanism of the electronic lock to execute an unlocking action.

2. The expansion device of the electronic lock of claim 1, wherein the expansion device includes a circuit board, at least some of the first input interface, the second output interface, and the antenna being integrated on the circuit board such that the expansion device forms an expansion board.

3. The expansion device of an electronic lock of claim 1, wherein the power source comprises a motor.

4. The expansion device of an electronic lock of claim 3, wherein the expansion device further comprises:

5. The expansion device of the electronic lock of claim 1, wherein the antenna comprises an NFC antenna; the control unit is also used for performing handshaking communication with the portable wireless energy supply equipment through the NFC antenna.

6. The expansion device of an electronic lock as recited in claim 1, wherein the expansion device further comprises:

7. The expansion device of an electronic lock of claim 1, wherein the expansion device further comprises:

8. The expansion device of an electronic lock as recited in claim 5, wherein the expansion device further comprises:

when the portable wireless energy supply device has the unlocking right, the control unit generates a first driving signal according to the electric energy signal stored by the energy storage unit and provides the first driving signal to the power source through the second output interface.

9. The expansion device of an electronic lock as recited in claim 1, wherein the expansion device further comprises:

10. An electronic lock, characterized in that the electronic lock comprises: a main control panel, a power source, and the expansion device of any one of claims 1-9.