WO2022199533A1

WO2022199533A1 - Bluetooth-based unlocking method, terminal device, smart lock and storage medium

Info

Publication number: WO2022199533A1
Application number: PCT/CN2022/082054
Authority: WO
Inventors: 王良; 孙方林; 林健新
Original assignee: 华为技术有限公司
Priority date: 2021-03-24
Filing date: 2022-03-21
Publication date: 2022-09-29
Also published as: CN115206003A

Abstract

The embodiments of the present application are applicable to the technical field of communications. Provided are a Bluetooth-based unlocking method, a terminal device, a smart lock and a storage medium. The terminal device and the smart lock can perform Bluetooth communication. The method comprises: a smart lock sending a BLE broadcast message, and a terminal device receiving the BLE broadcast message, so as to recognize the smart lock; the terminal device generating a target message that is used for instructing the smart lock to unlock, and sending the target message to the smart lock by using a first transmission power, wherein the first transmission power is less than or equal to a first threshold value, the first threshold value comprising -50 dBm; and the smart lock receiving the target message and unlocking according to the target message. The numerical value of the first transmission power is very small, and the signal transmission distance is limited and is usually dozens of centimeters. When the distance between the smart lock and the terminal device is within the transmission range of the first transmission power, the smart lock receives the target message sent by the terminal device. The target message is sent by the terminal device at a low power, such that imperceptible unlocking by a user is realized, and the user experience of unlocking is improved.

Description

Bluetooth-based unlocking method, terminal device, smart lock and storage medium

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on March 24, 2021, the application number is 202110314750.6, and the application name is "Bluetooth-based unlocking method, terminal device, smart lock and storage medium", all of which are The contents are incorporated herein by reference.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a Bluetooth-based unlocking method, a terminal device, a smart lock, and a storage medium.

Background technique

With the development and application of Bluetooth (bluetooth, BT) technology, there are more and more products based on Bluetooth, including smart locks unlocked based on Bluetooth, such as smart door locks.

The process for the user to open the smart door lock is usually as follows: the user clicks to run the door lock application installed on the mobile phone, and after the mobile phone and the smart door lock establish a Bluetooth connection, the door lock application displays the unlock interface. The user clicks the unlock button in the unlock interface to unlock the smart door lock.

The above process has many operation steps, and the unlocking efficiency is low.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a Bluetooth-based unlocking method, a terminal device, a smart lock, and a storage medium, which realizes the user's senseless unlocking and improves the user's unlocking experience.

In a first aspect, a Bluetooth-based unlocking method is provided, which is applied to a system composed of a terminal device and a smart lock. The method includes: the smart lock sends a BLE broadcast message, the terminal device receives the BLE broadcast message, and identifies the smart lock; For the target message indicating that the smart lock is unlocked, the target message is sent to the smart lock using the first transmit power, the first transmit power is less than or equal to the first threshold, and the first threshold includes -50dBm; the smart lock receives the target message and unlocks according to the target message.

In the Bluetooth-based unlocking method provided by the first aspect, the value of the first transmit power (ultra-low power in this embodiment of the present application) is very small, and the signal transmission distance is limited, usually tens of centimeters. The ultra-low power is less than or equal to the first threshold, and the first threshold includes -50dBm. For example, the first threshold may be below -50dBm to -60dBm. The terminal device uses ultra-low power to send the target message to the smart lock, which shortens the transmission distance for the terminal device to send the target message, and provides support for sensorless unlocking based on Bluetooth. Correspondingly, when the distance between the smart lock and the terminal device is within the transmission range of ultra-low power, the target message sent by the terminal device is received and unlocked, which improves the security of the user's senseless unlocking. In this way, the user does not need to perform an unlocking operation on the interface of the terminal device, which realizes the user's senseless unlocking, improves the unlocking efficiency, and improves the user experience.

In a possible implementation manner, before the terminal device generates the target message, it further includes: the smart lock sends encrypted information. Correspondingly, generating the target message by the terminal device includes: generating the target message according to the encrypted information by the terminal device. The smart lock is unlocked according to the target message, including: the smart lock is unlocked according to the encrypted information and the target message.

In this implementation, the encrypted information is used for security verification of the target message. On the mobile phone side, the target message is generated according to the encrypted information, which improves the security of the target message. On the door lock side, the security verification is performed on the received target message according to the encrypted information, and the unlocking is performed only when the verification is passed, which improves the security of the door lock unlocking.

In a possible implementation manner, before the terminal device uses the first transmit power to send the target message to the smart lock, the method further includes: the terminal device determines whether the positions of the terminal device and the smart lock satisfy a preset condition. Correspondingly, the terminal device uses the first transmission power to send the target message to the smart lock, including: if the positions of the terminal device and the smart lock meet the preset conditions, the terminal device uses the first transmission power to send the target message to the smart lock.

In this implementation manner, when the positions of the terminal device and the smart lock meet the preset conditions, the terminal device sends the target message, which saves the power consumption of the mobile phone.

In a possible implementation manner, before the terminal device generates the target message, it further includes: the smart lock sends capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking. Correspondingly, the terminal device generates the target message, including: if the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, the terminal device generates the target message.

In this implementation manner, when the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, the terminal device generates the target message, which saves the power consumption of the mobile phone.

In a possible implementation manner, the method further includes: the smart lock sends a response message to the terminal device, where the response message is used to indicate whether the smart lock is successfully unlocked.

In this implementation manner, after the smart lock is unlocked, a response message is sent to the terminal device to notify the terminal device that it has been unlocked, so that the unlocking process is complete, the continuous unlocking process is avoided, and the power consumption of the mobile phone and the door lock is saved.

In a second aspect, a Bluetooth-based unlocking method is provided, which is applied to a terminal device. The method includes: receiving a BLE broadcast message sent by a smart lock to identify the smart lock; generating a target message, where the target message is used to instruct the smart lock to unlock; A transmit power sends a target message to the smart lock, the first transmit power is less than or equal to a first threshold, and the first threshold includes -50dBm.

In a possible implementation manner, before generating the target message, the method further includes: receiving encrypted information sent by the smart lock. Correspondingly, generating the target message includes: generating the target message according to the encrypted information.

In a possible implementation manner, the encrypted information includes a random number; generating the target message according to the encrypted information includes: encrypting the random number according to a preset encryption and decryption algorithm to generate an encrypted random number; generating a target message, where the target message includes the encrypted random number and the encrypted random number. Unlock command.

In this implementation, the security of the target message is verified through random numbers and a preset encryption and decryption algorithm, thereby improving the security of the target message and the security of unlocking the door lock.

In a possible implementation manner, the encrypted information includes the public key in the asymmetric key pair; generating the target message according to the encrypted information includes: using the public key to encrypt the unlocking instruction, and generating the encrypted unlocking instruction; generating the target message, and the target message includes the encrypted unlocking instruction. Unlock command.

In this implementation manner, the security of the target message is verified by the asymmetric key, which improves the security of the target message and the security of unlocking the door lock.

In a possible implementation manner, the encrypted information is carried in the BLE broadcast message sent by the smart lock.

In this implementation, the mobile phone sends encrypted information by sending a BLE broadcast message, and there is no need to establish a BLE connection between the mobile phone and the door lock, which saves the message flow.

In a possible implementation manner, before using the first transmission power to send the target message to the smart lock, the method further includes: judging whether the positions of the terminal device and the smart lock satisfy a preset condition. Correspondingly, using the first transmission power to send the target message to the smart lock includes: if the positions of the terminal device and the smart lock meet the preset conditions, then using the first transmission power to send the target message to the smart lock.

In a possible implementation manner, judging whether the location of the terminal device and the smart lock satisfies a preset condition includes: receiving a ranging broadcast message sent by the smart lock; and judging whether the signal strength of the ranging broadcast message satisfies the preset condition.

In this implementation, the signal strength of the ranging broadcast message is inversely proportional to the distance between the mobile phone and the door lock. The closer the distance between the mobile phone and the door lock, the stronger the signal strength of the ranging broadcast message received by the mobile phone. The mobile phone determines whether to send the target message according to whether the signal strength of the ranging broadcast message satisfies the preset condition, which saves the power consumption of the mobile phone.

In a possible implementation manner, the smart lock includes at least one antenna, and the ranging broadcast message is sent by the smart lock through any antenna; judging whether the signal strength of the ranging broadcast message satisfies a preset condition includes: judging the ranging broadcast message. Whether the signal strength is greater than the preset threshold.

In this implementation, if the mobile phone determines that the signal strength of the ranging broadcast message is greater than the preset threshold, it means that the distance between the mobile phone and the door lock is relatively short, and the mobile phone sends the target message to the door lock, saving power consumption of the mobile phone.

In a possible implementation, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on the door, the first antenna is located outside the door, the second antenna is located inside the door, and the ranging broadcast message includes the first antenna. The ranging broadcast message and the second ranging broadcast message, the first ranging broadcast message is sent by the smart lock through the first antenna and includes first identification information, the first identification information is used to indicate that the first antenna is located outside the door, and the second The ranging broadcast message is sent by the smart lock through the second antenna and includes second identification information, and the second identification information is used to indicate that the second antenna is located in the door; judging whether the signal strength of the ranging broadcast message satisfies the preset conditions, including: Determine whether the signal strength of the first ranging broadcast message is greater than the signal strength of the second ranging broadcast message.

In this implementation, there are antennas on both the inside and outside of the door. By comparing the signal strength of the first ranging broadcast message corresponding to the antenna outside the door and the signal strength of the second ranging broadcast message corresponding to the antenna inside the door, it can be determined whether the mobile phone is inside or outside the door. When the mobile phone is outside the door, the mobile phone sends the target message to the door lock, which saves the power consumption of the mobile phone.

In a possible implementation manner, using the first transmission power to send the target message to the smart lock includes: using the first transmission power to continuously send the target message to the smart lock until the preset sending time or the preset number of times of sending is reached.

In this implementation manner, the target message is continuously sent multiple times through the mobile phone, which improves the success rate of the door lock receiving the target message, and ensures that the door lock can be unlocked. By setting the preset sending duration or the preset sending times, the mobile phone is prevented from sending the target message all the time, energy consumption is saved, and unlocking security is improved.

In a possible implementation manner, the target message is a BLE broadcast message.

In this implementation, the mobile phone sends the target message by sending a BLE broadcast message, and there is no need to establish a BLE connection between the mobile phone and the door lock, which saves the message flow.

In a possible implementation manner, before generating the target message, the method further includes: receiving capability information of the smart lock sent by the smart lock. Correspondingly, generating the target message includes: if the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, generating the target message.

In a possible implementation manner, the method further includes: receiving a response message sent by the smart lock, where the response message is used to indicate whether the smart lock is successfully unlocked.

In a possible implementation manner, after identifying the smart lock, the method further includes: establishing a BLE connection with the smart lock.

In a third aspect, a Bluetooth-based unlocking method is provided, which is applied to a smart lock. The method includes: sending a BLE broadcast message; sending encrypted information; receiving a target message sent by a terminal device, where the target message is used to instruct the smart lock to unlock; Information and target messages unlocked.

In a possible implementation manner, the encrypted information includes a random number, the target message includes an encrypted random number and an unlock instruction, and the encrypted random number is generated by the terminal device encrypting the random number according to a preset encryption and decryption algorithm; unlocking is performed according to the encrypted information and the target message. , including: decrypting the encrypted random number according to a preset encryption and decryption algorithm to obtain a decrypted random number; if the decrypted random number is the same as the random number, unlocking according to the unlocking instruction.

In a possible implementation manner, the encrypted information includes the public key in the asymmetric key pair, the target message includes an encrypted unlock instruction, and the encrypted unlock instruction is generated by the terminal device by encrypting the unlock instruction according to the public key; Unlocking includes: decrypting the encrypted unlocking instruction according to the private key in the asymmetric key pair to obtain the unlocking instruction; and unlocking according to the unlocking instruction.

In a possible implementation manner, the encrypted information is carried in the BLE broadcast message.

In a possible implementation manner, before receiving the target message sent by the terminal device, the method further includes: sending a ranging broadcast message.

In a possible implementation manner, the smart lock includes N antennas, where N is greater than or equal to 1, and sending the ranging broadcast message includes: sending the ranging broadcast message through at least one of the N antennas.

In a possible implementation, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on the door, the first antenna is located on the outside of the door, and the second antenna is located on the inside of the door; the ranging broadcast message is sent, including: : using the target power to send the first ranging broadcast message through the first antenna, and using the target power to send the second ranging broadcast message through the second antenna; the first ranging broadcast message includes a first ranging broadcast message indicating that the first antenna is located outside the door identification information, the second ranging broadcast message includes second identification information indicating that the second antenna is located in the door.

In a possible implementation manner, the target message is a BLE broadcast message sent by the terminal device.

In a possible implementation manner, before receiving the target message sent by the terminal device, the method further includes: sending capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking.

In a possible implementation manner, the method further includes: sending a response message to the terminal device, where the response message is used to indicate whether the smart lock is successfully unlocked.

In a possible implementation manner, before receiving the target message sent by the terminal device, the method further includes: establishing a BLE connection with the terminal device.

In a fourth aspect, a terminal device is provided, comprising: a receiving module for receiving a BLE broadcast message sent by a smart lock to identify the smart lock; a processing module for generating a target message, the target message being used to instruct the smart lock to unlock; sending The module is configured to send the target message to the smart lock by using a first transmit power, where the first transmit power is less than or equal to a first threshold, and the first threshold includes -50dBm.

In a possible implementation manner, the receiving module is further configured to receive encrypted information sent by the smart lock; the processing module is specifically configured to: generate a target message according to the encrypted information.

In a possible implementation, the encrypted information includes a random number; the processing module is specifically configured to: encrypt the random number according to a preset encryption and decryption algorithm to generate an encrypted random number; generate a target message; the target message includes an encrypted random number and an unlock instruction.

In a possible implementation manner, the encrypted information includes the public key in the asymmetric key pair; the processing module is specifically configured to: encrypt the unlocking instruction using the public key to generate the encrypted unlocking instruction; generate a target message; the target message includes the encrypted unlocking instruction.

In a possible implementation manner, the processing module is further used for: judging whether the position of the terminal device and the smart lock satisfies the preset condition; if the position of the terminal device and the smart lock satisfies the preset condition, then controlling the sending module to use the first transmit power. Send a targeted message to the smart lock.

In a possible implementation manner, the receiving module is further configured to receive a ranging broadcast message sent by the smart lock; the processing module is specifically configured to: determine whether the signal strength of the ranging broadcast message satisfies a preset condition.

In a possible implementation, the smart lock includes at least one antenna, and the ranging broadcast message is sent by the smart lock through any antenna; the processing module is specifically configured to: determine whether the signal strength of the ranging broadcast message is greater than a preset threshold.

In a possible implementation, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on the door, the first antenna is located outside the door, the second antenna is located inside the door, and the ranging broadcast message includes the first antenna. The ranging broadcast message and the second ranging broadcast message, the first ranging broadcast message is sent by the smart lock through the first antenna and includes first identification information, the first identification information is used to indicate that the first antenna is located outside the door, and the second The ranging broadcast message is sent by the smart lock through the second antenna and includes second identification information, which is used to indicate that the second antenna is located in the door; the processing module is specifically used to: determine the signal strength of the first ranging broadcast message Whether it is greater than the signal strength of the second ranging broadcast message.

In a possible implementation manner, the sending module is specifically configured to: use the first transmit power to continuously send the target message to the smart lock until the preset sending duration or the preset number of times of sending is reached.

In a possible implementation manner, the receiving module is further configured to receive capability information of the smart lock sent by the smart lock; the processing module is specifically configured to: generate a target message if the capability information of the smart lock indicates that the smart lock supports sensorless unlocking.

In a possible implementation manner, the receiving module is further configured to receive a response message sent by the smart lock, where the response message is used to indicate whether the smart lock is successfully unlocked.

In a possible implementation, the processing module is also used to establish a BLE connection with the smart lock.

In a fifth aspect, a smart lock is provided, comprising: a sending module for sending a BLE broadcast message; the sending module is also used for sending encrypted information; a receiving module for receiving a target message sent by a terminal device, and the target message is used to indicate Smart lock unlocking; processing module for unlocking according to encrypted information and target message.

In a possible implementation manner, the encrypted information includes a random number, the target message includes an encrypted random number and an unlock instruction, and the encrypted random number is generated by the terminal device encrypting the random number according to a preset encryption and decryption algorithm; the processing module is specifically used for: according to the preset encryption and decryption algorithm. The preset encryption and decryption algorithm decrypts the encrypted random number to obtain the decrypted random number; if the decrypted random number is the same as the random number, it is unlocked according to the unlocking instruction.

In a possible implementation, the encrypted information includes the public key in the asymmetric key pair, the target message includes an encrypted unlocking instruction, and the encrypted unlocking instruction is generated by the terminal device by encrypting the unlocking instruction according to the public key; the processing module is specifically used for: Decrypt the encrypted unlock instruction according to the private key in the asymmetric key pair to obtain the unlock instruction; unlock according to the unlock instruction.

In a possible implementation manner, the sending module is further configured to send a ranging broadcast message.

In a possible implementation manner, the smart lock includes N antennas, where N is greater than or equal to 1, and the sending module is specifically configured to: send a ranging broadcast message through at least one of the N antennas.

In a possible implementation, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on the door, the first antenna is located on the outside of the door, and the second antenna is located on the inside of the door; the sending module is specifically used for: using The target power sends the first ranging broadcast message through the first antenna, and uses the target power to send the second ranging broadcast message through the second antenna; the first ranging broadcast message includes first identification information indicating that the first antenna is located outside the door , the second ranging broadcast message includes second identification information indicating that the second antenna is located in the door.

In a possible implementation manner, the sending module is further configured to send capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking.

In a possible implementation manner, the sending module is specifically configured to: send a response message to the terminal device, where the response message is used to indicate whether the smart lock is unlocked successfully.

In a possible implementation manner, the processing module is further configured to: establish a BLE connection with the terminal device.

In a sixth aspect, a terminal device is provided, the terminal device includes a processor, and the processor is configured to be coupled with a memory, and read instructions in the memory and cause the terminal device to execute the method provided in the second aspect according to the instructions.

According to a seventh aspect, a smart lock is provided. The smart lock includes a processor, and the processor is coupled to the memory, reads instructions in the memory, and causes the smart lock to execute the method provided in the third aspect according to the instructions.

In an eighth aspect, a program is provided, which when executed by a processor is used to execute the method provided by the second aspect or the third aspect.

In a ninth aspect, a computer-readable storage medium is provided, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer or a processor, the methods provided in the second or third aspects are implemented.

In a tenth aspect, a program product is provided, the program product includes a computer program, the computer program is stored in a readable storage medium, and at least one processor of a device can read the computer program from the readable storage medium , the at least one processor executes the computer program so that the device implements the method provided in the second aspect or the third aspect.

Description of drawings

FIG. 1 is a system architecture diagram to which an embodiment of the application is applicable;

Fig. 2 is a kind of interface change schematic diagram of adding smart device in APP;

Fig. 3 is a kind of interface change schematic diagram of adding door lock information in APP;

FIG. 4 is a schematic diagram of an implementation method based on Bluetooth unlocking;

FIG. 5 is a schematic diagram of the principle of a Bluetooth-based unlocking method provided by an embodiment of the present application;

FIG. 6 is an interface diagram for setting the non-sensing unlocking function of a mobile phone and a door lock provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of an application scenario to which an embodiment of the present application is applicable;

FIG. 8 is a schematic diagram of another application scenario applicable to the embodiment of the present application;

FIG. 9 is a schematic diagram of another application scenario to which the embodiment of the present application is applicable;

10 is a message interaction diagram of a Bluetooth-based unlocking method provided by an embodiment of the present application;

FIG. 11 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the application;

12 is a schematic diagram of a data format for transmitting door lock capability information using the GATT protocol provided by an embodiment of the present application;

13 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the application;

14 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the application;

FIG. 15 is a schematic position diagram of a door lock antenna provided by an embodiment of the application;

FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of the application;

17 is a schematic structural diagram of a smart lock provided by an embodiment of the application;

FIG. 18 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application are described below with reference to the accompanying drawings.

The Bluetooth-based unlocking method provided by the embodiments of the present application is applied to a scenario of unlocking a smart lock based on Bluetooth. Exemplarily, FIG. 1 is a system architecture diagram to which this embodiment of the present application is applicable. As shown in FIG. 1 , the system may include a terminal device 100 and a smart lock 200 . The terminal device 100 and the smart lock 200 can perform Bluetooth communication. An application (application, APP) for managing the smart lock 200 is installed on the terminal device 100, and the name and developer of the application are not limited in this embodiment of the present application.

This embodiment of the present application does not limit the type of the terminal device 100 . For example, examples of some terminal devices are: mobile phones, tablet computers, notebook computers, handheld computers, wearable devices, and the like.

The embodiment of the present application does not limit the type, shape, structure and specific components included in the smart lock 200 . For example, some examples of smart locks are: smart door locks, smart car locks, smart padlocks, and the like. Optionally, as shown in FIG. 1 , the smart lock 200 may include, but is not limited to, at least one of the following: a password pad 201 or a fingerprint touch screen 202 . Optionally, the password pad 201 may be a physical key password pad, or an electronic password pad.

For the convenience of description, the embodiments of the present application are described by taking the smart lock as the door lock and the terminal device as the mobile phone as an example.

Optionally, the Bluetooth communication in this embodiment of the present application is Bluetooth low energy (bluetooth low energy, BLE) communication.

First, the APP for managing smart locks installed on the mobile phone is exemplarily explained.

Users can add smart devices to the APP. Exemplarily, FIG. 2 is a schematic diagram of an interface change of adding a smart device to an APP. In this example, the APP can manage multiple types of smart devices, such as smart locks, gateways, and smart home appliances. Optionally, in other examples, different smart locks correspond to different APPs, for example, smart locks of different manufacturers are matched with corresponding APPs. As shown in (a) of FIG. 2 , the desktop 11 of the mobile phone includes a plurality of APP icons. The user clicks the icon 12 to open the smart life application. Correspondingly, the mobile phone responds to the user's operation of clicking the icon 12, runs the smart life application, and displays the main interface 13 of the smart life application, as shown in (b) of FIG. 2 . In the main interface 13 of the smart life application, the lower menu area 14 includes a total of four menus: Home, Mall, Scene and My. Optionally, after the mobile phone runs the smart life application, the system defaults the currently displayed “home” interface as the main interface 13 . Currently, the smart life application has not added any smart devices, and the number of devices is 0. The user can click the control 15 in the upper right corner of the main interface 13 to add a smart device. Correspondingly, the mobile phone displays the window 16 in the main interface 13 in response to the user's operation of clicking the control 15, as shown in (c) of FIG. 2 . The window 16 includes: adding a device, creating a scene, sharing a device, and connecting a three-party platform, a total of 4 menus. The user clicks the "Add Device" menu 17 to continue adding smart devices to the APP. Correspondingly, the mobile phone displays a prompt window 18 in the main interface 13 in response to the user's operation of clicking the "add device" menu 17, as shown in (d) of FIG. 2 . The user proceeds to the next step by viewing the prompts in the prompt window 18 . For example, the prompt is ""Smart Life" needs to turn on Bluetooth to discover and add Bluetooth devices. Is it turned on?". The user clicks the "Enable" button 19 in the prompt window 18 to continue adding the smart device to the APP. Correspondingly, the mobile phone displays the main interface 20 for adding a device in response to the user's operation of clicking the "ON" button 19, as shown in (e) of FIG. 2 . The main interface 20 of adding a device includes a prompt window 21 , and the user performs the next operation by viewing the prompt in the prompt window 21 . For example, if the prompt is "the automatic scanning function can be used only after the mobile phone location service is enabled", the user clicks the "deactivate" button 22 in the prompt window 21 to enable the mobile phone location service. Correspondingly, the mobile phone responds to the user's operation of clicking the "deactivate" button 22, starts the mobile phone location service, and scans whether there are smart devices around the mobile phone based on Bluetooth. During the scanning process of the mobile phone, the interface changes can be seen in (f) of Figure 2. The main interface 20 of adding a device includes prompt information, for example, "Scanning, please ensure that the smart device is connected to the power supply and is located near the mobile phone" . Optionally, the scanning area 24 in the pattern 23 in the main interface 20 can be rotated around the center of the circle to present an animation effect, dynamically prompting the user that the mobile phone is currently scanning to find a smart device. Optionally, other ways of adding smart devices are also provided in the main interface 20. For example, the user can click the “manually add” button 25 below to manually add the smart device; or, the user can click the “scan code to add” button below. Press button 26 to add a smart device by scanning the identification code of the smart device. When the mobile phone scan is completed, the connectable smart devices will be displayed. As shown in (g) in Figure 2, the main interface 20 includes the door lock 001 found by the mobile phone scan. The user can click the "connect" button 27 to establish Bluetooth connection between mobile phone and door lock 001. Correspondingly, in response to the user's operation of clicking the "connect" button 27, the mobile phone establishes a Bluetooth connection with the door lock 001 to complete the addition of the smart device. Afterwards, as shown in (h) of FIG. 2 , the user can click the return control 28 in the main interface 20 of adding a device to display the main interface of the smart life application. Correspondingly, the mobile phone displays the main interface 13 of the smart life application in response to the user's operation of clicking the return control 28 , as shown in (i) in FIG. 2 . At this time, the main interface 13 displays that the number of smart devices added by the smart life application is one, specifically the door lock 001 .

Optionally, the user may configure the relevant information of the smart device in the APP, and the specific content of the relevant information is not limited in this embodiment of the present application. Exemplarily, FIG. 3 is a schematic diagram of an interface change for adding door lock information in an APP. As shown in (a) of FIG. 3 , the mobile phone currently displays the main interface 31 of my device. This example does not limit the process of the user operating in the APP to jump to display the main interface 31 . Suppose, there are 3 smart devices added in the APP, including door lock 001, door lock 002 and gateway 1 at home, and these 3 devices are displayed in the main interface 31. The user can click the door lock 001 to view the relevant information of the door lock 001. Correspondingly, in response to the user's operation of clicking the door lock 001, the mobile phone displays the main interface 32 of the door lock 001, as shown in (b) of FIG. 3 . The main interface 32 of the door lock 001 may include prompt information, for example, "bring the mobile phone close to the door lock, light up the password panel and click the configuration button", which is used to configure the door lock information, such as the door lock name, door lock related functions Open and close, etc. It may also include a fingerprint management button 33 , a password management button 34 and an unlock record button 35 . Users can click different buttons to perform different operations. For example, the user adds the user's fingerprint information by clicking the fingerprint management button 33, sets a password for the door lock 001 by clicking the password management button 34, or checks the historical unlocking record of the door lock 001 by clicking the unlocking record button 35.

It should be noted that FIG. 2 and FIG. 3 are only examples, and do not limit the APP and related interfaces for managing smart locks.

When the user unlocks the door, an implementation method is that the user clicks the unlock button on the relevant interface of the APP to unlock the door. Exemplarily, FIG. 4 is a schematic schematic diagram of an implementation manner of unlocking based on Bluetooth. As shown in FIG. 4 , when the user wants to open the door lock 400 , the user clicks the icon 42 on the desktop 41 of the mobile phone 300 to run the door lock APP. Correspondingly, the mobile phone 300 responds to the user's operation of clicking the icon 42 , runs the door lock APP, establishes a Bluetooth connection with the door lock 400 , and displays the interface 43 . The interface 43 includes an unlock button 44 . Wherein, the embodiment of the present application does not limit the process of the user operating in the APP to jump to the display interface 43 . The user clicks the unlock button 44 , and accordingly, the mobile phone 300 sends an unlock instruction to the door lock 400 in response to the operation of the user clicking the unlock button 44 . The door lock 400 is unlocked according to the unlocking instruction, and the user turns the door handle to unlock.

It should be noted that the embodiment of the present application does not limit the interface where the unlock button is located, and the implementation manners in different APPs are different. Optionally, in another example, as shown in (a) of FIG. 3 , the main interface 31 includes an unlock button for each door lock. For example, the unlock button of the door lock 001 is the button 36 , and the user can click the button 36 to unlock the door lock 001 .

It can be seen that, in the above implementation manner, the unlocking requires the user to participate in the operation.

An embodiment of the present application provides a Bluetooth-based unlocking method. When a terminal device communicates with a door lock via Bluetooth, there are two types of transmit power, which can be called normal power and ultra-low power, respectively. Compared with normal power, the value of ultra-low power is very small, and the signal transmission distance is limited, usually tens of centimeters. The terminal device uses ultra-low power to send unlock commands to the door lock, and uses normal power to send other data to the door lock. Exemplarily, FIG. 5 is a schematic schematic diagram of the principle of a Bluetooth-based unlocking method provided by an embodiment of the present application. As shown in FIG. 5 , the user carries a mobile phone 300 , the range of the mobile phone 300 for Bluetooth communication using normal power is marked as range 51 , and the range for Bluetooth communication using ultra-low power is marked as range 52 , and range 51 is greater than range 52 . When the mobile phone 300 and the door lock 400 are located within the range 51, the mobile phone 300 and the door lock 400 can transmit other data. When the distance between the mobile phone 300 and the door lock 400 is small enough and within the range 52 , the door lock 400 can receive the unlocking instruction sent by the mobile phone 300 . By setting the ultra-low power, the mobile phone shortens the transmission distance of the unlock command sent by the mobile phone, thus providing support for the non-inductive unlocking based on Bluetooth, and improving the security of the user's non-inductive unlocking. In this way, the user does not need to perform the unlocking operation in the mobile phone interface, and the mobile phone uses ultra-low power to send the unlocking command to the door lock. Correspondingly, the door lock is safely unlocked according to the received unlocking command, which realizes the user's non-sensing unlocking and improves the unlocking efficiency. Improved user experience.

Next, the concepts involved in the embodiments of the present application will be described.

1. Normal power and ultra-low power

The normal power refers to the power used by the terminal device in the existing Bluetooth communication. Ultra-low power refers to the use of fractional transmit power to send unlock commands to the door lock in order to ensure the safety of non-inductive unlocking. The technical principle can be seen in Figure 5.

Optionally, the mobile phone can use ultra-low power to send other information related to the unlocking instruction to the door lock, which is used for the door lock to further verify whether the received unlocking instruction is correct and complete, which further improves the security of non-sensing unlocking. The specific content of other information is not limited in the embodiments of the present application.

It should be noted that the embodiment of the present application does not limit the value or the value range of the ultra-low power. It can be understood that the smaller the value of the ultra-low power, the shorter the signal transmission distance, and the higher the security of the Bluetooth-based sensorless unlocking. Optionally, the ultra-low power can be below -50dBm to -60dBm, so that the unlocking command can be received only within a range of several tens of centimeters between the door lock and the terminal device. For example, the distance between the door lock and the terminal device is less than 30cm to 50cm.

It should be noted that the embodiments of the present application do not limit the names of normal power and ultra-low power. Optionally, the ultra-low power is also referred to as the first transmission power, and the normal power is also referred to as the second transmission power.

2. Non-sensing unlocking function of terminal equipment

Sensorless unlocking means that when the user needs to unlock the door, the user does not need to participate in the unlocking operation. For the user, the unlocking of the door lock is imperceptible, which can improve the user's experience. For example, in the scenario shown in Figure 4, the user needs to click the unlock button to unlock, which is not a senseless unlock.

The sensorless unlocking function of the terminal device means that the terminal device can use ultra-low power to send unlocking instructions to the smart door lock. This embodiment of the present application does not limit the name of the sensorless unlocking function.

Optionally, in an implementation manner, the terminal device supports the sensorless unlocking function by default.

Optionally, in another implementation manner, the user can turn on or turn off the sensorless unlocking function of the terminal device. This embodiment of the present application does not limit the setting manner of the user. For example, it can be set by voice, preset gestures or operations in the relevant display interface.

3. The non-sensing unlocking function of the door lock

The non-sensing unlocking function of the door lock refers to the function that can be unlocked without the user's participation in the unlocking operation.

Optionally, in an implementation manner, the door lock supports the sensorless unlocking function by default.

Optionally, in another implementation manner, the user can enable or disable the sensorless unlocking function of the door lock in the APP that manages the door lock. This embodiment of the present application does not limit the setting manner of the user. For example, it can be set by voice, preset gestures or operations in the relevant display interface.

Exemplarily, FIG. 6 is an interface diagram for setting the sensorless unlocking function of a mobile phone and a door lock according to an embodiment of the present application. Continuing with (b) in FIG. 3 , the user clicks on the control 37 to display more information of the door lock 001 . Correspondingly, the mobile phone displays an interface 61 in response to the user's operation of clicking on the control 37, as shown in (a) of FIG. 6 . The interface 61 includes more information of the door lock 001, such as device name, warranty information, device information and version upgrade. The interface 61 also includes an unbind device button 62 , and the user can click the button 62 to unbind the mobile phone from the door lock 001 . The interface 61 also includes a switch control 63 for the sensorless unlocking function, which is used to set the sensorless unlocking function of the mobile phone and the door lock 001 . Optionally, different display forms of the switch control 63 may indicate whether the sensorless unlocking function is on or off. Currently, the sensorless unlocking function of the mobile phone and door lock 001 is disabled. The user can click the switch control 63. Correspondingly, in response to the user's click operation, the mobile phone enables the sensorless unlocking function of the mobile phone and the door lock 001, and the display form of the switch control 63 changes, as shown in (b) of FIG. 6 .

It should be noted that FIG. 6 is only an example, and does not limit the manner of setting the sensorless unlocking function of the mobile phone and the door lock. Optionally, the sensorless unlocking functions of the mobile phone and the door lock can be set separately, or can be set with one key as shown in FIG. 6 .

In the following, the application scenarios to which the embodiments of the present application are applicable are illustrated by examples, but the application scenarios are not limited.

Optionally, in an example, FIG. 7 is a schematic diagram of an application scenario to which the embodiment of the present application is applied, and shows a process in which the distance between the mobile phone carried by the user and the door lock is gradually reduced before entering the door. As shown in (a) of Figure 7, user A carries mobile phone A at position 0, and the distance between user A and the door lock is too far, which exceeds the Bluetooth communication range under normal power of mobile phone A, and mobile phone A cannot communicate with the door. The lock communicates via Bluetooth. As shown in (b) in Figure 7, as user A moves towards the door lock, the distance between mobile phone A and the door lock decreases. When user A is in position 1, mobile phone A can use normal power to communicate with the door lock via Bluetooth. , but mobile phone A cannot communicate with the door lock via Bluetooth using ultra-low power. The range 52 shows the range in which the mobile phone A uses ultra-low power for Bluetooth communication. At this time, if mobile phone A uses ultra-low power to send an unlock command to the door lock, the door lock will not receive the unlock command and cannot be unlocked. As shown in (c) of FIG. 7 , as the user A continues to move toward the door lock, the distance between the mobile phone A and the door lock continues to decrease. (c) in FIG. 7 is similar to (b) in FIG. 7 , the mobile phone A cannot perform Bluetooth communication with the door lock using ultra-low power. As shown in (d) in Figure 7, as user A continues to move toward the door lock, when user A is at position 3, mobile phone A can use normal power to communicate with the door lock via Bluetooth, or use ultra-low power to communicate with the door lock. for Bluetooth communication. At this time, mobile phone A sends an unlocking command to the door lock using ultra-low power, and the door lock can unlock after receiving the unlocking command.

Optionally, in another example, FIG. 8 is a schematic diagram of another application scenario applicable to the embodiment of the present application, which shows a scenario in which the user enters the door from outside the door and places the mobile phone near the door lock. (a) in FIG. 8 is the same as (d) in FIG. 7 and will not be repeated here. As shown in (b) in Figure 8, after user A enters the door, user A places mobile phone A near the door lock, and the door lock is located within the range 52 where mobile phone A uses ultra-low power for Bluetooth communication. Mobile phone A can use normal power to communicate with the door lock. For Bluetooth communication, ultra-low power can also be used for Bluetooth communication with the door lock. Optionally, as shown in (c) in FIG. 8 , if the mobile phone A is determined to be currently in the door and does not need to be unlocked, the ultra-low power will not be used to send the unlocking command to the door lock, which saves the power consumption of the mobile phone A. It also further improves the security of non-sensing unlocking.

Optionally, in yet another example, FIG. 9 is a schematic diagram of yet another application scenario to which the embodiment of the present application is applied, and illustrates a scenario in which there is a risk of a relay attack. As shown in Figure 9, there are 2 attackers, identified as attacker 1 and attacker 2. The distance between user A and the door lock is relatively far. Mobile phone A can use normal power to communicate with the door lock via Bluetooth, but cannot communicate with the door lock using ultra-low power. Attacker 1 carries a relay device located near user A, which is used to intercept the information sent by mobile phone A to the door lock, and send the intercepted information to mobile phone 2 carried by attacker 2. The attacker 2 carries the mobile phone 2 and is located near the door lock. The mobile phone 2 uses the intercepted information to communicate with the door lock, causing danger. In this scenario, since the range 52 of mobile phone A using ultra-low power for Bluetooth communication is small, such as tens of centimeters, and the distance between attacker 1 and user A is usually not less than tens of centimeters, the relay device cannot intercept it. The unlock command sent by mobile phone A solves the risk of the relay device intercepting the unlock command, improves the security of the door lock, and successfully defends against relay attacks.

The technical solutions of the present application will be described in detail below through specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

The terms "first", "second", "third", "fourth", etc. (if any) in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. .

FIG. 10 is a message interaction diagram of a Bluetooth-based unlocking method provided by an embodiment of the present application. The executive body involved in this embodiment includes a mobile phone and a door lock. As shown in FIG. 10 , the Bluetooth-based unlocking method provided in this embodiment may include:

S1001, the door lock sends a BLE broadcast message.

S1002, the mobile phone performs BLE scanning.

Specifically, the mobile phone and the door lock need to have the Bluetooth function turned on. This embodiment does not limit the execution order of S1001 and S1002. The door lock can send BLE broadcast messages for a long time, and the mobile phone can perform BLE background scanning for a long time. If the mobile phone receives the BLE broadcast message sent by the door lock, the BLE broadcast message includes the identity information of the door lock, and the door lock can be identified according to the BLE broadcast message.

Among them, the Bluetooth broadcast and scanning can refer to the Bluetooth standard protocol Core v5.2 Vol6 PartD 3/4/5, which is not described in detail in this embodiment.

S1003, the mobile phone generates a target message, and the target message is used to instruct the door lock to unlock.

The target message includes the identity information of the mobile phone and the identity information of the door lock. This embodiment does not limit the implementation of the identity information, for example, the identification information or address of the device.

Since the door lock is added before the mobile phone, such as the process shown in Figure 2, the mobile phone and the door lock establish a Bluetooth connection and perform the initial pairing authentication process, and the mobile phone and the door lock save each other's information. Through the identity information of the mobile phone and the identity information of the door lock, the target message instructs the door lock to unlock, and accordingly, the door lock can determine the target message to instruct itself to unlock.

Optionally, the target message may include an unlocking instruction, where the unlocking instruction is used to instruct the door lock to be unlocked.

S1004, the mobile phone uses ultra-low power to send the target message to the door lock.

The ultra-low power can be referred to the above description, and details are not repeated here. When the distance between the phone and the door lock is long, the door lock cannot receive the target message. When the distance between the phone and the door lock is close, the target message can be received.

Optionally, the mobile phone can use the first transmission power to continuously send the target message to the door lock until the preset sending time or the preset number of sending times is reached. This embodiment does not limit the value of the preset sending duration or the preset sending times.

The target message is continuously sent multiple times through the mobile phone, which improves the success rate of the door lock receiving the target message and ensures that the door lock can be unlocked. By setting the preset sending duration or the preset sending times, the mobile phone is prevented from sending the target message all the time, energy consumption is saved, and unlocking security is improved. For example, in the scenario shown in (a) of Figure 8, the user is always outside the door. Since the number of times the mobile phone sends the target message is limited, the door lock is prevented from receiving the target message and unlocking all the time, which improves the security of the door lock.

Optionally, in an implementation manner, the target message may be a BLE broadcast message. That is, the mobile phone can use ultra-low power to send a BLE broadcast message to the door lock, where the BLE broadcast message is used to instruct the door lock to unlock. Correspondingly, the door lock receives the BLE broadcast message through BLE scanning. In this implementation, there is no need to establish a BLE connection between the mobile phone and the door lock, which saves the message flow.

Optionally, in another implementation manner, after establishing a BLE connection with the door lock, the mobile phone sends the target message through the BLE connection.

S1005, the door lock is unlocked according to the target message.

For ease of understanding, S1003 to S1005 may be referred to as unlocking stages.

It can be seen that, in the Bluetooth-based unlocking method provided in this embodiment, the mobile phone and the door lock perform BLE broadcast and scanning according to the existing process, and perform Bluetooth communication. After the mobile phone recognizes the door lock, it uses ultra-low power to send the target message, and the transmission distance of the target message is limited. When the distance between the mobile phone and the door lock is very far, for example, the scene shown in (a), (b), (c) in Figure 7 or the scene shown in Figure 9, even if the mobile phone sends the target message, the door lock If not received, the door lock will not be unlocked. When the distance between the mobile phone and the door lock is very close, for example, the scene shown in (d) in Figure 7 or the scene shown in Figure 8, the door lock can receive the target message and can be unlocked according to the target message. By setting the ultra-low power, the transmission distance of the target message is limited, which ensures the safety of the door lock unlocking. The door lock performs unlocking according to whether the target message is received, which avoids the user's participation in the unlocking operation, realizes the user's senseless unlocking, and improves the user's experience.

Optionally, the Bluetooth-based unlocking method provided in this embodiment may further include:

S1006, the door lock sends a response message to the mobile phone, and the response message is used to indicate whether the door lock is unlocked successfully.

Correspondingly, the mobile phone receives the response message sent by the door lock.

If the response message indicates that the door lock was successfully unlocked, the phone can stop sending the targeted message.

If the response message indicates that the door lock fails to be unlocked, optionally, the mobile phone can retransmit the target message to the door lock using ultra-low power. Optionally, the number of retransmissions may be set, and the number of retransmissions is the maximum number of times that the mobile phone continuously receives a response message indicating that the door lock fails to unlock. The value of the number of retransmissions is not limited in this embodiment. Optionally, S1004 may be referred to each time the mobile phone resends the target message. Optionally, the mobile phone can output prompt information to prompt the user that the door lock fails to unlock, so that the user can re-trigger the sending of the target message, or the user can choose another way to unlock. For example, the method of clicking the unlock button as shown in FIG. 4 is adopted. When the mobile phone outputs the prompt information, it can be output by voice or displayed on the relevant interface. This embodiment does not limit the specific content of the prompt information.

If the mobile phone does not receive the response message sent by the door lock, it can re-send the target message to the door lock with ultra-low power. Reference may be made to the relevant description in S1006, which will not be repeated here.

On the basis of the embodiment shown in FIG. 10 , FIG. 11 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the present application. The executive body involved in this embodiment includes a mobile phone and a door lock.

As shown in Figure 11, optionally, in S1004, before the mobile phone uses ultra-low power to send the target message to the door lock, it can also include:

S1007, the mobile phone determines whether the positions of the mobile phone and the door lock satisfy a preset condition.

If it is determined that the positions of the mobile phone and the door lock satisfy the preset condition, S1004 is executed. The unlocking stage includes S1003, S1007, and S1004 to S1005.

Specifically, because the distance of the mobile phone using ultra-low power to send the target message is limited, the target message is sent only when the positions of the mobile phone and the door lock meet the preset conditions, which saves the power consumption of the mobile phone. For example, in the scenarios shown in (a), (b), and (c) in FIG. 7 or in the scenario shown in FIG. 9 , the mobile phone is far away from the door lock, and the preset conditions are not met, and the mobile phone may not send the target message. In the scenario shown in (d) of FIG. 7 or the scenario shown in FIG. 8 , the distance between the mobile phone and the door lock is close enough to send the target message. For another example, in the scenario shown in (c) of FIG. 8 , the user does not need to unlock the door when he is in the door, and the mobile phone may not send the target message, which not only saves the power consumption of the mobile phone, but also improves the security of the door lock.

Wherein, the information for determining the positions of the mobile phone and the door lock is different, and the corresponding preset conditions may be different. The information for determining the location of the mobile phone and the door lock may include, but is not limited to, at least one of the following: location information of the mobile phone, location information of the door lock, or signal strength of the signal sent by the door lock received by the mobile phone. The location information includes, but is not limited to, at least one of the following: global positioning system (GPS) location information, Beidou satellite navigation system location information, or a location that combines base station information, WiFi signal characteristics, geomagnetism and other information for fusion positioning information.

Optionally, before the mobile phone generates the target message in S1003, it may further include:

S1008 , the door lock sends capability information of the door lock, and the capability information is used to indicate whether the door lock supports sensorless unlocking.

Correspondingly, the mobile phone receives the capability information of the door lock.

S1009, the mobile phone determines whether the door lock supports non-sensing unlocking according to the capability information of the door lock.

If the capability information of the door lock indicates that the door lock supports non-inductive unlocking, S1003 is executed, and a target message is sent to the door lock by using ultra-low power, so as to realize the non-inductive unlocking of the user.

If the capability information of the door lock indicates that the door lock does not support sensorless unlocking, S1003 and subsequent steps are not performed. Optionally, the mobile phone can output prompt information for prompting that the door lock does not support sensorless unlocking, so that the user can choose another way to unlock. For example, the method of clicking the unlock button as shown in FIG. 4 is adopted. When the mobile phone outputs the prompt information, it can be output by voice or displayed on the relevant interface. This embodiment does not limit the specific content of the prompt information.

Optionally, before the door lock sends the door lock capability information in S1008, it may further include:

S1010, the mobile phone sends a capability query request message to the door lock.

Correspondingly, the door lock receives the capability query request message sent by the mobile phone.

For ease of understanding, S1010, S1008-S1009 may be referred to as a door lock capability identification stage.

Optionally, in an implementation manner, the capability information of the door lock may be carried in a BLE broadcast message sent by the door lock. Correspondingly, the mobile phone scans and receives BLE broadcast messages through BLE to obtain the capability information of the door lock. In this implementation, there is no need to establish a BLE connection between the mobile phone and the door lock, which saves the message flow.

Optionally, in another implementation manner, after the door lock establishes a BLE connection with the mobile phone, the door lock sends the capability information of the door lock through the BLE connection.

Optionally, the door lock may transmit the capability information of the door lock according to a generic attribute profile (GATT) protocol. GATT organizes the data to be sent through attribute tables. Multiple attributes can be included in the GATT attribute table. Properties contain a handle, a universally unique identifier (UUID), and a value. The handle is the index of the attribute in the GATT table, and the handle of each attribute is unique in a device. UUID contains the information of the data type in the attribute table, it is the key information to understand the meaning of each byte of the value in the attribute table. Exemplarily, FIG. 12 is a schematic diagram of a data format for transmitting door lock capability information using the GATT protocol according to an embodiment of the present application. As shown in FIG. 12, the GATT attribute table includes a device service capability attribute (UUID1) and other service attributes (UUID2). The device service capability attribute includes the sensorless unlocking feature, and the type (Type) in the sensorless unlocking feature includes: sensorless unlocking, ranging broadcast, geographic location verification, and other capability values. Each type (Type) is identified by a different value (Value). For example, the value of non-sensing unlocking (Value) is Ture, indicating that the door lock supports the non-sensing unlocking function. Similarly, the door lock also supports the function of sending ranging broadcast and geographic location verification.

Optionally, in the Bluetooth-based unlocking method provided in this embodiment, after the mobile phone performs BLE scanning in S1002, it may further include:

S1011. Establish a BLE connection between the mobile phone and the door lock.

For the BLE connection, please refer to the Bluetooth standard protocol Core v5.2 Vol6 PartD 3/4/5, which is not described in detail in this embodiment.

Based on the embodiment shown in FIG. 10 or FIG. 11 , in another embodiment of the present application, an implementation manner of S1003 and S1005 in the unlocking phase is provided. In this embodiment, before the mobile phone generates the target message in S1003, it may further include:

The door lock sends encrypted messages. Correspondingly, the mobile phone receives the encrypted information sent by the door lock.

Correspondingly, the generation of the target message by the mobile phone in S1003 may include: the mobile phone generates the target message according to the encrypted information.

The unlocking of the door lock according to the target message in S1005 may include: unlocking the door lock according to the encrypted information and the target message.

The encrypted information is used for security verification of the target message. On the mobile phone side, the target message is generated according to the encrypted information, which improves the security of the target message. On the door lock side, the security verification is performed on the received target message according to the encrypted information, and the unlocking is performed only when the verification is passed, which improves the security of the door lock unlocking.

Optionally, in order to further improve security, the door lock can update encrypted information. Optionally, the door lock may periodically update the encrypted information, and the update period is not limited in this embodiment. Optionally, every time the mobile phone and the door lock establish a BLE connection, the door lock can be triggered to update the encrypted information.

Optionally, in an implementation manner, the encrypted information is carried in the BLE broadcast message sent by the door lock. That is, the door lock sends a BLE broadcast message, and the BLE broadcast message includes encrypted information. Correspondingly, the mobile phone scans the BLE to receive the BLE broadcast message to obtain encrypted information. This embodiment does not limit other contents in the BLE broadcast message. Optionally, the BLE broadcast message may further include capability information of the door lock.

In this implementation, there is no need to establish a BLE connection between the mobile phone and the door lock, which saves the message flow.

Optionally, in another implementation manner, after the door lock establishes a BLE connection with the mobile phone, the door lock sends encrypted information to the mobile phone through the BLE connection.

Optionally, in an implementation manner, FIG. 13 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the present application. The security of the target message is verified through random numbers and a preset encryption and decryption algorithm, which improves the security of the target message and the security of door lock unlocking. The door lock can acquire a random number, and the method for acquiring the random number by the door lock and the value range of the random number are not limited in this embodiment. Encrypted information includes random numbers. As shown in Figure 13, the unlocking phase may include:

S1301, the door lock sends a random number.

Correspondingly, the mobile phone receives the random number sent by the door lock.

S1302, the mobile phone encrypts the random number according to a preset encryption and decryption algorithm, and generates an encrypted random number.

S1303. The mobile phone generates a target message, where the target message includes an encrypted random number and an unlocking instruction.

S1304, the mobile phone uses ultra-low power to send the target message to the door lock.

If the door lock receives the target message, S1305-S1306 are executed.

S1305, the door lock decrypts the encrypted random number according to a preset encryption and decryption algorithm to obtain a decrypted random number.

S1306: If the decrypted random number is the same as the random number, the door lock is unlocked according to the unlocking instruction.

The preset encryption and decryption algorithms are not limited in this embodiment. For example, the Advanced Encryption Standard (AES) algorithm.

Optionally, in this implementation manner, the unlocking instruction in the target message may be encrypted by a preset encryption and decryption algorithm.

Optionally, in another implementation manner, FIG. 14 is another message interaction diagram of the Bluetooth-based unlocking method provided by the embodiment of the present application. The security of the target message is verified by the key, which improves the security of the target message and the security of unlocking the door lock. As shown in Figure 14, the unlocking phase can include:

S1401, the door lock obtains an asymmetric key pair.

The asymmetric key pair includes a public key and a private key, and the encrypted information includes a public key.

This embodiment does not limit the manner in which the door lock obtains the asymmetric key pair.

S1402, the door lock sends the public key in the asymmetric key pair.

Correspondingly, the mobile phone receives the public key sent by the door lock.

S1403, the mobile phone uses the public key to encrypt the unlocking instruction to generate the encrypted unlocking instruction.

S1404. The mobile phone generates a target message, where the target message includes an encrypted unlocking instruction.

S1405, the mobile phone uses ultra-low power to send the target message to the door lock.

If the door lock receives the target message, S1406 to S1407 are executed.

S1406, the door lock decrypts the encrypted unlocking instruction according to the private key in the asymmetric key pair, and obtains the unlocking instruction.

S1407, the door lock is unlocked according to the unlocking instruction.

On the basis of the above-mentioned embodiment, in another embodiment of the present application, an implementation manner of S1007 in the unlocking stage is provided. In this embodiment, in S1007, the mobile phone determines whether the positions of the mobile phone and the door lock meet the preset conditions, which may include:

The door lock sends a ranging broadcast message. Correspondingly, the mobile phone receives the ranging broadcast message sent by the door lock.

The mobile phone determines whether the signal strength of the ranging broadcast message satisfies the preset condition.

Generally, the farther the mobile phone is from the door lock, the weaker the signal strength of the ranging broadcast message received by the mobile phone. On the contrary, the closer the distance between the mobile phone and the door lock, the stronger the signal strength of the ranging broadcast message received by the mobile phone. Therefore, the signal strength of the ranging broadcast message received by the mobile phone can reflect the distance between the mobile phone and the door lock.

Next, the scene is divided according to the number of antennas on the door lock and the positions of the antennas.

Scenario 1: The door lock includes at least one antenna. After the door lock is installed on the door, all antennas are on the outside of the door.

Scenario 2: The door lock includes at least one antenna. After the door lock is installed on the door, all antennas are on the inner side of the door.

The third scenario: the door lock includes at least one antenna. After the door lock is installed on the door, some antennas are located on the outside of the door, and some antennas are located on the inside of the door. For the convenience of explanation, there is an antenna inside and outside the door as an example. The antenna located outside the door is called the first antenna, and the antenna located inside the door is called the second antenna.

Optionally, in an implementation manner, it is applicable to the first scenario, the second scenario and the third scenario.

The door lock sends a ranging broadcast message, which can include:

The door lock transmits a ranging broadcast message through at least one of all antennas.

The mobile phone determines whether the signal strength of the ranging broadcast message meets the preset conditions, which may include:

For any ranging broadcast message received by the mobile phone, determine whether the signal strength of the ranging broadcast message is greater than a preset threshold.

If the mobile phone determines that the signal strength of the ranging broadcast message is greater than the preset threshold, it means that the distance between the mobile phone and the door lock is relatively short, and S1004 can be executed, and the mobile phone uses ultra-low power to send the target message to the door lock. If the mobile phone determines that the signal strength of the ranging broadcast message is less than the preset threshold, it means that the distance between the mobile phone and the door lock is relatively far, and S1004 and subsequent steps are not performed. Wherein, when the signal strength of the ranging broadcast message is equal to the preset threshold, S1004 may be performed, or S1004 may not be performed.

The value of the preset threshold is not limited in this embodiment.

Optionally, in order to improve the accuracy of judgment, if the mobile phone receives ranging broadcast messages sent by multiple antennas, it may determine whether to send the target message according to whether the signal strengths of the multiple ranging broadcast messages are greater than a preset threshold. For example, when the number of ranging broadcast messages whose signal strength is greater than a preset threshold is greater than a certain number, the mobile phone uses ultra-low power to send the target message to the door lock. Alternatively, as long as there is a ranging broadcast message with a signal strength greater than a preset threshold, the mobile phone uses ultra-low power to send the target message to the door lock.

Optionally, in another implementation manner, the third scenario is applicable.

The door lock sends a ranging broadcast message, which can include:

The door lock uses the target power to send the first ranging broadcast message through the first antenna, and uses the target power to send the second ranging broadcast message through the second antenna. The first ranging broadcast message includes first identification information, and the first identification information is used to indicate that the first antenna is located outside the door. The second ranging broadcast message includes second identification information, where the second identification information is used to indicate that the second antenna is located in the door.

The mobile phone determines whether the signal strength of the first ranging broadcast message is greater than the signal strength of the second ranging broadcast message.

This embodiment does not limit the value of the target power.

If the signal strength of the first ranging broadcast message is greater than the signal strength of the second ranging broadcast message, it means that the mobile phone is located outside the door, and S1004 can be executed, and the mobile phone uses ultra-low power to send the target message to the door lock. If the signal strength of the first ranging broadcast message is lower than the signal strength of the second ranging broadcast message, it means that the mobile phone is located in the door, and S1004 and subsequent steps are not performed. Wherein, when the signal strength of the first ranging broadcast message is equal to the signal strength of the second ranging broadcast message, S1004 may or may not be performed.

The following description will be made with reference to FIG. 15 . The mobile phone A is located outside the door, the signal strength of the first ranging broadcast message is marked as RSSI11, and the signal strength of the second ranging broadcast message is marked as RSSI21. The door lock uses the same power to send the ranging broadcast message through the first antenna and the second antenna. Due to the barrier of the door, RSSI11>RSSI21. Similarly, the mobile phone B is located in the door, and the signal strength of the first ranging broadcast message is marked as RSSI12<the signal strength of the second ranging broadcast message is marked as RSSI22.

Optionally, for the third scenario, the above two manners may be combined. When it is determined that the distance between the mobile phone and the door lock is close enough and the mobile phone is located outside the door, the mobile phone uses ultra-low power to send the target message to the door lock to achieve non-sensing unlocking.

On the basis of the above embodiment, in another embodiment of the present application, in the unlocking stage, before the door lock is unlocked according to the target message in S1005, it may further include:

The door lock determines whether the positions of the mobile phone and the door lock meet the preset conditions.

If the door lock determines that the positions of the mobile phone and the door lock meet the preset conditions, S1005 is executed to unlock according to the target message. If the door lock determines that the positions of the mobile phone and the door lock do not meet the preset conditions, S1005 and subsequent steps are not performed. By further judging on the door lock side, the safety of unlocking the door lock is improved.

Wherein, the information for determining the positions of the mobile phone and the door lock is different, and the corresponding preset conditions may be different. In order to be easily distinguished from S1007, the preset condition in S1007 may be referred to as the first preset condition, and the preset condition in this embodiment may be referred to as the second preset condition.

Optionally, in an implementation manner, the door lock determines whether the positions of the mobile phone and the door lock satisfy a preset condition, which may include:

The phone obtains an asymmetric key pair. The asymmetric key pair includes a public key and a private key.

The phone sends the public key from the asymmetric key pair to the door lock.

The mobile phone obtains the current location information, and encrypts the current location information with the private key in the asymmetric key pair to generate encrypted location information.

The phone sends encrypted location information to the door lock. Accordingly, the door lock receives encrypted location information.

The door lock decrypts the encrypted location information according to the public key in the asymmetric key pair to obtain the decrypted location information.

The door lock compares the decrypted position information with the initial position information of the mobile phone stored locally, and determines whether the error between the decrypted position information and the initial position information of the mobile phone is within a preset error range. The initial location information of the mobile phone is the location information of the mobile phone when the mobile phone establishes a BLE connection with the door lock for the first time.

Usually, when the mobile phone is configured with the door lock for the first time, the geographical location of the mobile phone is written into the door lock. For example, in the process of adding the door lock 001 shown in FIG. 2 , after the mobile phone establishes a Bluetooth connection with the door lock 001, the location information of the mobile phone is sent to the door lock, that is, the initial location information of the mobile phone. Subsequently, before the mobile phone is close to the door lock to perform non-sensing unlocking, the door lock compares the current position of the mobile phone with the initial position of the mobile phone stored locally. If the error is greater than the preset error range, it will refuse to unlock; if the error is less than the preset error range, Unlocking is allowed, which further improves the security of the door lock's senseless unlocking.

It should be noted that this embodiment does not limit the value of the preset error range. For example, 50 meters.

It can be understood that, in order to realize the above-mentioned functions, the terminal device and the smart lock include corresponding hardware and/or software modules for executing each function. The present application can be implemented in hardware or in the form of a combination of hardware and computer software in conjunction with the algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functionality for each particular application in conjunction with the embodiments, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the terminal device and the smart lock can be divided into functional modules according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one module. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. It should be noted that the names of the modules in the embodiments of the present application are schematic, and the names of the modules are not limited in actual implementation.

FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. As shown in FIG. 16 , the terminal device provided in this embodiment may include:

The receiving module 1601 is used to receive the BLE broadcast message sent by the smart lock, and identify the smart lock;

a processing module 1602, configured to generate a target message, the target message being used to instruct the smart lock to be unlocked;

A sending module 1603, configured to send the target message to the smart lock using a first transmit power, where the first transmit power is less than or equal to a first threshold, where the first threshold includes -50dBm.

Optionally, the receiving module 1601 is further configured to receive encrypted information sent by the smart lock;

The processing module 1602 is specifically configured to: generate the target message according to the encrypted information.

Optionally, the encrypted information includes random numbers; the processing module 1602 is specifically configured to:

Encrypt the random number according to a preset encryption and decryption algorithm to generate an encrypted random number;

The target message is generated; the target message includes the encrypted random number and an unlock instruction.

Optionally, the encrypted information includes a public key in an asymmetric key pair; the processing module 1602 is specifically configured to:

using the public key to encrypt and unlock the instruction to generate an encrypted unlocking instruction;

The target message is generated; the target message includes the encrypted unlock instruction.

Optionally, the encrypted information is carried in the BLE broadcast message sent by the smart lock.

Optionally, the processing module 1602 is further configured to:

Determine whether the position of the terminal device and the smart lock meets the preset condition; if the position of the terminal device and the smart lock meets the preset condition, control the sending module 1603 to use the first transmission power to send the The smart lock sends the target message.

Optionally, the receiving module 1601 is further configured to receive a ranging broadcast message sent by the smart lock;

The processing module 1602 is specifically configured to: determine whether the signal strength of the ranging broadcast message satisfies a preset condition.

Optionally, the smart lock includes at least one antenna, and the ranging broadcast message is sent by the smart lock through any one of the antennas;

The processing module 1602 is specifically configured to: determine whether the signal strength of the ranging broadcast message is greater than a preset threshold.

Optionally, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on a door, the first antenna is located outside the door, and the second antenna is located inside the door. , the ranging broadcast message includes a first ranging broadcast message and a second ranging broadcast message, the first ranging broadcast message is sent by the smart lock through the first antenna and includes first identification information, The first identification information is used to indicate that the first antenna is located outside the door, the second ranging broadcast message is sent by the smart lock through the second antenna and includes second identification information, the second The identification information is used to indicate that the second antenna is located in the door;

The processing module 1602 is specifically used for:

Determine whether the signal strength of the first ranging broadcast message is greater than the signal strength of the second ranging broadcast message.

Optionally, the sending module 1603 is specifically used for:

The target message is continuously sent to the smart lock by using the first transmit power until a preset sending time or a preset number of sending times is reached.

Optionally, the target message is a BLE broadcast message.

Optionally, the receiving module 1601 is further configured to receive capability information of the smart lock sent by the smart lock;

The processing module 1602 is specifically used for:

If the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, the target message is generated.

Optionally, the receiving module 1601 is further configured to receive a response message sent by the smart lock, where the response message is used to indicate whether the smart lock is successfully unlocked.

Optionally, the processing module 1602 is further configured to establish a BLE connection with the smart lock.

The terminal device provided in this embodiment is configured to perform the operations performed by the mobile phone in the foregoing method embodiments, and the technical principles and technical effects are similar, and details are not described herein again.

FIG. 17 is a schematic structural diagram of a smart lock provided by an embodiment of the present application. As shown in Figure 17, the smart lock provided by this embodiment may include:

A sending module 1701, configured to send a BLE broadcast message;

The sending module 1701 is further configured to send encrypted information;

A receiving module 1703, configured to receive a target message sent by a terminal device, where the target message is used to instruct the smart lock to be unlocked;

The processing module 1702 is configured to unlock according to the encrypted information and the target message.

Optionally, the encrypted information includes a random number, the target message includes an encrypted random number and an unlock instruction, and the encrypted random number is generated by the terminal device encrypting the random number according to a preset encryption and decryption algorithm;

The processing module 1702 is specifically used for:

Decrypt the encrypted random number according to the preset encryption and decryption algorithm to obtain a decrypted random number;

If the decryption random number is the same as the random number, unlock according to the unlocking instruction.

Optionally, the encrypted information includes a public key in an asymmetric key pair, and the target message includes an encrypted unlocking instruction, and the encrypted unlocking instruction is generated by the terminal device encrypting the unlocking instruction according to the public key. of;

The processing module 1702 is specifically used for:

Decrypt the encrypted unlock instruction according to the private key in the asymmetric key pair to obtain the unlock instruction;

Unlock according to the unlocking instruction.

Optionally, the encryption information is carried in a BLE broadcast message.

Optionally, the sending module 1701 is further configured to send a ranging broadcast message.

Optionally, the smart lock includes N antennas, where N is greater than or equal to 1, and the sending module 1701 is specifically used for:

The ranging broadcast message is transmitted through at least one of the N antennas.

Optionally, the smart lock includes a first antenna and a second antenna. When the smart lock is installed on a door, the first antenna is located outside the door, and the second antenna is located inside the door. ; The sending module 1701 is specifically used for:

A first ranging broadcast message is sent through the first antenna using a target power, and a second ranging broadcast message is sent through the second antenna using the target power; the first ranging broadcast message includes an indication of the first ranging broadcast message. The first identification information indicating that the antenna is located outside the door, and the second ranging broadcast message includes second identification information indicating that the second antenna is located inside the door.

Optionally, the target message is a BLE broadcast message sent by the terminal device.

Optionally, the sending module 1701 is further configured to send capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking.

Optionally, the sending module 1701 is specifically used for:

Send a response message to the terminal device, where the response message is used to indicate whether the smart lock is unlocked successfully.

Optionally, the processing module 1702 is further configured to:

A BLE connection is established with the terminal device.

The smart lock provided in this embodiment is used to perform the operations performed by the door lock in the foregoing method embodiments, and the technical principles and technical effects are similar, and details are not repeated here.

Please refer to FIG. 18 , which shows a structure of an electronic device provided by an embodiment of the present application. The electronic device may be a terminal device or a smart lock in this embodiment of the application. The electronic device includes: a processor 1801 , a receiver 1802 , a transmitter 1803 , a memory 1804 and a bus 1805 . The processor 1801 includes one or more processing cores, and the processor 1801 executes various functional applications and information processing by running software programs and modules. The receiver 1802 and the transmitter 1803 may be implemented as a communication component, which may be a baseband chip. The memory 1804 is connected to the processor 1801 through a bus 1805. The memory 1804 may be configured to store at least one program instruction, and the processor 1801 may be configured to execute the at least one program instruction, so as to implement the technical solutions of the foregoing embodiments. The implementation principle and technical effect thereof are similar to the related embodiments of the above method, and are not repeated here.

When the electronic device is powered on, the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to send data through the antenna, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit in the control circuit. The control circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. send. When data is sent to the electronic device, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.

Those skilled in the art can understand that, for the convenience of description, FIG. 18 only shows one memory and a processor. In an actual electronic device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present application.

As an optional implementation manner, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication data, and the central processing unit is mainly used to execute software programs and process data of the software programs. Those skilled in the art can understand that the baseband processor and the central processing unit may be integrated into one processor, or may be independent processors, which are interconnected through technologies such as a bus. Those skilled in the art can understand that an electronic device may include multiple baseband processors to adapt to different network standards, an electronic device may include multiple central processors to enhance its processing capability, and various components of the electronic device may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function. The memory can be integrated in the processor or independent of the processor. The memory includes a cache, which can store frequently accessed data/instructions.

In this embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

In this embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SS), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM). Memory is, without limitation, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data. The methods provided by the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL), or wireless (eg, infrared, wireless, microwave, etc.) A readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The available media can be magnetic media (eg, floppy disks, hard disks, magnetic tapes) ), optical media (eg, digital video disc (DWD), or semiconductor media (eg, SSD), etc.).

The embodiments of the present application provide a computer program product, which enables the terminal to execute the technical solutions in the foregoing embodiments when the computer program product runs on a terminal. The implementation principle and technical effect thereof are similar to those of the above-mentioned related embodiments, which will not be repeated here.

The embodiments of the present application provide a computer-readable storage medium, on which program instructions are stored, and when the program instructions are executed by a terminal, the terminal executes the technical solutions of the foregoing embodiments. The implementation principle and technical effect thereof are similar to those of the above-mentioned related embodiments, which will not be repeated here. To sum up, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A Bluetooth-based unlocking method, characterized in that it is applied to a system composed of a terminal device and a smart lock, the method comprising:

The smart lock sends a low-power Bluetooth BLE broadcast message;

The terminal device receives the BLE broadcast message and identifies the smart lock;

The terminal device generates a target message, and the target message is used to instruct the smart lock to be unlocked;

sending, by the terminal device, the target message to the smart lock using a first transmit power, where the first transmit power is less than or equal to a first threshold, and the first threshold includes -50dBm;

the smart lock receives the target message;

The smart lock is unlocked according to the target message.
The method according to claim 1, wherein before the terminal device generates the target message, the method further comprises:

The smart lock sends encrypted information;

The terminal device generates a target message, including:

The terminal device generates the target message according to the encrypted information;

The smart lock is unlocked according to the target message, including:

The smart lock is unlocked according to the encrypted information and the target message.
The method according to claim 1 or 2, wherein before the terminal device uses the first transmit power to send the target message to the smart lock, the method further comprises:

The terminal device determines whether the positions of the terminal device and the smart lock satisfy a preset condition;

The terminal device uses the first transmit power to send the target message to the smart lock, including:

If the positions of the terminal device and the smart lock satisfy a preset condition, the terminal device sends the target message to the smart lock by using the first transmit power.
The method according to any one of claims 1-3, wherein before the terminal device generates the target message, the method further comprises:

The smart lock sends capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking;

The terminal device generates a target message, including:

If the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, the terminal device generates the target message.
The method according to any one of claims 1-4, characterized in that, further comprising:

The smart lock sends a response message to the terminal device, where the response message is used to indicate whether the smart lock is successfully unlocked.
A Bluetooth-based unlocking method, characterized in that it is applied to a terminal device, the method comprising:

Receive the low-power Bluetooth BLE broadcast message sent by the smart lock, and identify the smart lock;

generating a target message, the target message is used to instruct the smart lock to unlock;

The target message is sent to the smart lock using a first transmit power, where the first transmit power is less than or equal to a first threshold, and the first threshold includes -50dBm.
The method according to claim 6, wherein before generating the target message, further comprising:

Receive encrypted information sent by the smart lock;

The generating target message includes:

The target message is generated according to the encrypted information.
The method according to claim 7, wherein the encrypted information comprises a random number; and the generating the target message according to the encrypted information comprises:

Encrypt the random number according to a preset encryption and decryption algorithm to generate an encrypted random number;

The target message is generated; the target message includes the encrypted random number and an unlock instruction.
The method according to claim 7, wherein the encrypted information includes a public key in an asymmetric key pair; and the generating the target message according to the encrypted information includes:

using the public key to encrypt and unlock the instruction to generate an encrypted unlocking instruction;

The target message is generated; the target message includes the encrypted unlock instruction.
The method according to any one of claims 7-9, wherein the encrypted information is carried in a BLE broadcast message sent by the smart lock.
The method according to any one of claims 6-10, wherein before the using the first transmit power to send the target message to the smart lock, the method further comprises:

Determine whether the position of the terminal device and the smart lock meets a preset condition;

The using the first transmit power to send the target message to the smart lock includes:

If the positions of the terminal device and the smart lock satisfy a preset condition, the target message is sent to the smart lock by using the first transmission power.
The method according to claim 11, wherein the judging whether the positions of the terminal device and the smart lock meet a preset condition comprises:

receiving a ranging broadcast message sent by the smart lock;

Determine whether the signal strength of the ranging broadcast message satisfies a preset condition.
The method according to claim 12, wherein the smart lock comprises at least one antenna, and the ranging broadcast message is sent by the smart lock through any one of the antennas;

The judging whether the signal strength of the ranging broadcast message satisfies a preset condition includes:

Determine whether the signal strength of the ranging broadcast message is greater than a preset threshold.
The method according to claim 12 or 13, wherein the smart lock comprises a first antenna and a second antenna, and when the smart lock is installed on a door, the first antenna is located outside the door, The second antenna is located inside the door, the ranging broadcast message includes a first ranging broadcast message and a second ranging broadcast message, and the first ranging broadcast message is for the smart lock to pass through the first ranging broadcast message. Sent by an antenna and including first identification information, the first identification information is used to indicate that the first antenna is located outside the door, and the second ranging broadcast message is sent by the smart lock through the second antenna and includes second identification information, the second identification information is used to indicate that the second antenna is located in the door;

The judging whether the signal strength of the ranging broadcast message satisfies a preset condition includes:

Determine whether the signal strength of the first ranging broadcast message is greater than the signal strength of the second ranging broadcast message.
The method according to any one of claims 6-14, wherein the using the first transmit power to send the target message to the smart lock comprises:

The target message is continuously sent to the smart lock by using the first transmit power until a preset sending time or a preset number of sending times is reached.
The method according to any one of claims 6-15, wherein the target message is a BLE broadcast message.
The method according to any one of claims 6-16, wherein before the generating the target message, the method further comprises:

receiving the capability information of the smart lock sent by the smart lock;

The generating target message includes:

If the capability information of the smart lock indicates that the smart lock supports sensorless unlocking, the target message is generated.
The method according to any one of claims 6-17, further comprising:

A response message sent by the smart lock is received, where the response message is used to indicate whether the smart lock is successfully unlocked.
The method according to any one of claims 6-18, wherein after identifying the smart lock, the method further comprises:

Establish a BLE connection with the smart lock.
A Bluetooth-based unlocking method, characterized in that, applied to a smart lock, the method comprising:

Send low energy bluetooth BLE broadcast message;

send encrypted messages;

receiving a target message sent by a terminal device, where the target message is used to instruct the smart lock to be unlocked;

Unlock according to the encrypted information and the target message.
The method according to claim 20, wherein the encrypted information includes a random number, the target message includes an encrypted random number and an unlocking instruction, and the encrypted random number is the encrypted random number obtained by the terminal device according to a preset encryption and decryption algorithm. The random number is encrypted and generated;

The unlocking according to the encrypted information and the target message includes:

Decrypt the encrypted random number according to the preset encryption and decryption algorithm to obtain a decrypted random number;

If the decryption random number is the same as the random number, unlock according to the unlocking instruction.
The method according to claim 20, wherein the encrypted information includes a public key in an asymmetric key pair, the target message includes an encrypted unlock instruction, and the encrypted unlock instruction is the The public key is generated by encrypting the unlocking instruction;

The unlocking according to the encrypted information and the target message includes:

Decrypt the encrypted unlock instruction according to the private key in the asymmetric key pair to obtain the unlock instruction;

Unlock according to the unlocking instruction.
The method according to any one of claims 20-22, wherein the encryption information is carried in a BLE broadcast message.
The method according to any one of claims 20-23, wherein before the receiving the target message sent by the terminal device, the method further comprises:

Send a ranging broadcast message.
The method according to claim 24, wherein the smart lock includes N antennas, and N is greater than or equal to 1, and the sending a ranging broadcast message includes:

The ranging broadcast message is transmitted through at least one of the N antennas.
The method according to claim 24, wherein the smart lock comprises a first antenna and a second antenna, and when the smart lock is installed on a door, the first antenna is located outside the door, the The second antenna is located on the inner side of the door; the sending of the ranging broadcast message includes:

A first ranging broadcast message is sent through the first antenna using a target power, and a second ranging broadcast message is sent through the second antenna using the target power; the first ranging broadcast message includes an indication of the first ranging broadcast message. The first identification information indicating that the antenna is located outside the door, and the second ranging broadcast message includes second identification information indicating that the second antenna is located inside the door.
The method according to any one of claims 20-26, wherein the target message is a BLE broadcast message sent by the terminal device.
The method according to any one of claims 20-27, wherein before the receiving the target message sent by the terminal device, the method further comprises:

Send capability information of the smart lock; the capability information is used to indicate whether the smart lock supports sensorless unlocking.
The method according to any one of claims 20-28, further comprising:

Send a response message to the terminal device, where the response message is used to indicate whether the smart lock is unlocked successfully.
The method according to any one of claims 20-29, wherein before the receiving the target message sent by the terminal device, the method further comprises:

A BLE connection is established with the terminal device.
A terminal device, characterized in that the terminal device includes a processor, and the processor is configured to be coupled with a memory, and read instructions in the memory and cause the terminal device to execute the execution according to the instructions according to claims 6-19. The method of any of the above.
A smart lock, characterized in that the smart lock includes a processor, which is coupled to a memory, reads instructions in the memory, and causes the smart lock to perform as claimed in claims 20-30 according to the instructions The method of any of the above.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, when the computer instructions are executed on an electronic device, the electronic device is made to perform any one of claims 6-19. A method as claimed in any one of claims 20-30, or performing a method as claimed in any one of claims 20-30.
A computer program product comprising instructions, characterized in that, when the computer program product is run on a terminal, the terminal is made to execute the method according to any one of claims 6-19, or to execute the method according to claim 6. The method of any one of 20-30.