CN111918263B - Bluetooth connection method and device and Internet of things equipment - Google Patents

Abstract

This application discloses a Bluetooth connection method, device and Internet of Things equipment. The method includes: obtaining a pre-stored authorization information table, which includes the identity of the authorized device and the verification information of the authorized device; determining Target device, the target device is a device in the environment where the Internet of Things device is located, and the identity identifier is the same as the identity identifier of the authorized device in the authorization information table; obtain the verification information of the target device; and obtain the verification information from the target device according to the identity identifier of the target device. The verification information corresponding to the target device is determined in the authorization information table; the connection authority is verified according to the verification information of the target device and the verification information corresponding to the target device; if the connection authority is verified successfully, the A Bluetooth connection is established between the target devices. The solution provided by this application can improve the security of IoT devices.

Description

Bluetooth connection method, device and Internet of Things equipment

Technical field

The present invention relates to the technical field of the Internet of Things, and specifically to a Bluetooth connection method, device and Internet of Things equipment.

Background technique

With the development of intelligent control technology, the applications of IoT devices are becoming more and more widespread. For IoT devices, a commonly used control method is Bluetooth control. In the Bluetooth control method, the IoT device needs to be paired with the device used for control first. At present, when using Bluetooth connection control, the Bluetooth connection between the control device and the Internet of Things device is usually established directly based on the MAC (Media Access Control Address) address of the control device. However, in this method , there is a risk of MAC address being stolen, that is to say, illegal devices can control IoT devices by modifying their MAC addresses, which will cause security risks for IoT devices.

Contents of the invention

In order to solve the above problems, in the first aspect, an embodiment of the present invention provides a Bluetooth connection method, which is applied to Internet of Things devices. The method includes:

Obtain a pre-stored authorization information table, which includes the identity of the authorized device and the verification information of the authorized device;

Determine the target device, which is a device in the environment where the Internet of Things device is located and whose identity is the same as the identity of the authorized device in the authorization information table;

Obtain verification information of the target device;

Determine the verification information corresponding to the target device from the authorization information table according to the identity of the target device;

Perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device;

If the connection permission verification is successful, a Bluetooth connection is established with the target device.

In an optional implementation, the determining target device includes:

Determine the target device from the devices to be connected. The device to be connected is a device in the environment where the Internet of Things device is located, Bluetooth has been turned on, and the identity identifier is the same as the identity identifier in the authorization information table.

In an optional implementation, determining the target device from the devices to be connected includes:

Determine whether there is a main authorized device among the devices to be connected, and the main authorized device is the first device that is successfully paired with the Internet of Things device;

If there is a main authorized device in the device to be connected, the main authorized device is used as the target device.

In an optional implementation, determining the target device from the devices to be connected further includes:

If there is no master authorized device among the devices to be connected, the device to be connected with the highest priority is used as the target device.

In optional implementations, the method further includes:

If the connection permission verification is unsuccessful, determine whether all devices to be connected have been used as target devices;

If there is a device to be connected that is not a target device, determine a new target device from the device to be connected that is not a target device;

The step of obtaining the verification information of the target device is re-executed according to the new target device.

In an optional implementation, determining a new target device from devices to be connected that are not target devices includes:

From the devices to be connected that are not target devices, the device to be connected with the highest priority is obtained as the new target device.

In optional implementations, the method further includes:

Obtain the pre-stored number of Bluetooth connections established between the authorized device and the Internet of Things device;

The priority of each device to be connected is determined according to the number of connections of the authorized device corresponding to each device to be connected, where the greater the number of connections, the higher the priority.

In an optional implementation, the verification information includes authorization data and validity data;

The connection permission verification based on the verification information of the target device and the verification information corresponding to the target device includes:

Perform authorization verification and validity verification on the target device according to the verification information of the target device, the authorization data corresponding to the target device, and the validity data corresponding to the target device;

If the authorization verification is successful and the validity verification is successful, it is determined that the connection permission verification of the target device is successful;

If the authorization check fails or the validity check fails, it is determined that the connection permission check fails.

In an optional implementation, authorization verification and validity are performed on the target device based on the verification information of the target device, the authorization data corresponding to the target device, and the validity data corresponding to the target device. Verification, including:

Determine whether the verification information of the target device is consistent with the authorization data corresponding to the target device;

If the verification information of the target device is consistent with the authorization data corresponding to the target device, it is determined that the authorization verification is successful;

If the verification information of the target device is inconsistent with the authorization data corresponding to the target device, it is determined that the authorization verification fails;

If the validity data corresponding to the target device is in a valid state, the validity verification is successful;

If the validity data corresponding to the target device is in an invalid state, the validity check fails.

In an optional implementation, determining whether the verification information of the target device is consistent with the authorization data corresponding to the target device includes:

Determine whether the target device is the main authorized device, and the main authorized device is the first device that is successfully paired with the Internet of Things device;

If the target device is the primary authorized device, determine whether the verification information of the target device matches the authorization data corresponding to the target device;

If the verification information of the target device is consistent with the authorization data corresponding to the target device, it is determined that the verification information of the target device is consistent with the authorization data corresponding to the target device;

If the verification information of the target device does not match the authorization data corresponding to the target device, obtain new authorization data;

If the new authorization data is inconsistent with the old authorization data, it is determined that the verification information of the target device is consistent with the authorization data corresponding to the target device.

In an optional implementation, the identity identifier is obtained from a hash function value of characters composed of the MAC address of the terminal device and the IMEI of the terminal device.

In an optional implementation, the method further includes, after establishing a Bluetooth connection with the target device, obtaining the target device's preference information for Internet of Things devices;

Run based on the preference information.

In a second aspect, embodiments of the present invention provide a Bluetooth connection device for use in Internet of Things devices. The device includes:

The first acquisition module is used to acquire a pre-stored authorization information table, where the authorization information table includes the identity of the authorized device and the verification information of the authorized device;

The first determination module is used to determine the target device. The target device is a device in the environment where the Internet of Things device is located, and the identity identifier is the same as the identity identifier of the authorized device in the authorization information table;

The second acquisition module is used to acquire the verification information of the target device;

a second determination module, configured to determine the verification information corresponding to the target device from the authorization information table according to the identity of the target device;

A verification module configured to perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device; and when the connection permission verification is successful, establish a Bluetooth connection with the target device .

In a third aspect, embodiments of the present invention provide an Internet of Things device. The Internet of Things device includes a memory and a processor. The memory is electrically connected to the processor. An executable program is stored in the memory. When the processor executes the executable program, it implements the method described in any one of the preceding embodiments.

The Bluetooth connection method, device and Internet of Things device disclosed in this embodiment obtain pre-stored verification information through the Internet of Things device and obtain verification information of the target device, and then verify the target device based on the verification information of the target device and the corresponding verification information of the target device. The device performs connection permission verification, thereby establishing a Bluetooth connection with the target device if the connection permission verification is successful. This prevents illegal devices from connecting to IoT devices and improves the security of IoT devices.

Description of the drawings

Figure 1 is a schematic structural block diagram of an Internet of Things device provided by an embodiment of the present application;

Figure 2 is a schematic diagram of the external connection architecture of the Internet of Things device provided by the embodiment of the present application;

Figure 3 is a schematic flowchart 1 of the Bluetooth connection method provided by the embodiment of the present application;

Figure 4 is a schematic flow chart 2 of the Bluetooth connection method provided by the embodiment of the present application;

Figure 5 is a schematic structural diagram of a Bluetooth connection device provided by an embodiment of the present application.

Explanation of reference signs: 100-Internet of Things equipment; 110-Bluetooth connection device; 111-first acquisition module; 112-first determination module; 113-second acquisition module; 114-second determination module; 115-verification module ; 120-storage; 130-processor; 200-server; 300-network; 400-terminal equipment.

Detailed ways

With the development of intelligent control technology, the applications of Internet of Things devices 100 are becoming more and more widespread. Bluetooth is a short-range wireless communication protocol standard that is widely used in various terminal devices and Internet of Things devices. When a Bluetooth connection is made, the Bluetooth MAC address is used for identification. That is, after the Bluetooth connection is completed, both parties will often use the Bluetooth MAC to identify the identities of both parties for identification.

This kind of Bluetooth-based identity recognition can be used to improve user experience in certain scenarios. For example, Bluetooth speakers or in-car entertainment devices provide different songs and other preferences for different users through the Bluetooth of different mobile phones connected to it. Smart air conditioners use different mobile phones connected to the Bluetooth to provide different preferences such as songs. Bluetooth provides personalized functions such as temperature, humidity and wind adjustment for different users. However, in this method, there is a risk of MAC address being stolen. That is to say, illegal devices can control IoT devices by modifying their MAC addresses. This will cause security risks for IoT devices.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Please refer to Figure 1. Figure 1 is a schematic structural block diagram of an Internet of Things device 100 provided by an embodiment of the present application. The Internet of Things device 100 includes a Bluetooth connection device 110, a memory 120 and a processor 130. The memory 120 and the processor 130 directly communicate with each other. Or indirect electrical connection for data interaction. For example, these components may be electrically connected to each other through one or more communication buses or signal lines. The Bluetooth connection device 110 includes at least one software function module that can be stored in the memory 120 in the form of software or firmware or solidified in the operating system (Operating System, OS) of the Internet of Things device 100 . The processor 130 is used to execute executable modules stored in the memory 120, such as software function modules and computer programs included in the Bluetooth connection device 110.

Referring to Figure 2, the Internet of Things device 100 can communicate with the server 200 through the network 300, and the server 200 can also communicate with multiple terminal devices 400 (terminal device 400-terminal device 400) through the network 300.

The embodiment of the present application also provides a Bluetooth connection method that can be applied to the above-mentioned Internet of Things device 100. Please refer to Figure 3. Figure 3 is a schematic flow chart of the Bluetooth connection method provided by this embodiment. The Bluetooth connection method includes step S110. - Step S150.

Step S110: Obtain a pre-stored authorization information table. The authorization information table includes the identity of the authorized device and the verification information of the authorized device.

Step S120: Determine the target device. The target device is a device in the environment where the Internet of Things device 100 is located, and the identity identifier is the same as the identity identifier of the authorized device in the authorization information table.

Step S130: Obtain verification information of the target device.

Step S140: Determine verification information corresponding to the target device from the authorization information table according to the identity of the target device.

Step S150: Perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device.

Step S160: If the connection permission verification is successful, a Bluetooth connection is established with the target device.

In this embodiment, the connection permission of the target device is determined through the pre-stored authorization information table, so that when the connection permission of the target device is successfully verified, a Bluetooth connection is established with the target device, thereby avoiding the need to have the authorization information. Illegal devices with the same MAC address control the Internet of Things device 100, which reduces the risk of the Internet of Things device 100 being illegally controlled and improves the security of the Internet of Things device 100.

In one implementation, the authorization information table can be set directly by the user according to other terminal devices 400 that can control the Internet of Things device 100, and then stored in the Internet of Things device 100.

Referring to FIG. 2 , in another implementation manner, the authorization information table may be synchronized by the master authorization device to the Internet of Things device 100 . Among them, the main authorized device is the first device that is successfully paired with the IoT device 100. After the IoT device 100 is successfully paired with the main authorized device, it will not be directly paired with other terminal devices 400. After the main authorized device is successfully paired with the Internet of Things device 100, it generates its own verification information, identity identifier, and device type identifier, and synchronizes the verification information, identity identifier, and device type identifier to the Internet of Things device 100. This synchronization The process may be: the main authorization device sends the verification information, identity identifier and device type identifier to the server 200 . The server 200 can store the verification information, identity identification and device type identification in the authorization information table configured on it, or can send the verification information, identity identification and device type identification to the Internet of Things device 100, and the Internet of Things device 100 to store this information in the storage information table configured on the Internet of Things device 100.

After the main authorized device is successfully paired with the Internet of Things device 100, it will also interact with other terminal devices 400 and generate verification information, identity identifiers and device type identifiers of other terminal devices 400. The main authorized device will verify the information, identity The identification and the device type identification are sent to the server 200. The server 200 may store the verification information, identity identifier, and device type identifier in the authorization information table configured thereon, or may send the verification information, identity identifier, and device type identifier to the Internet of Things device 100 . The Internet of Things device 100 stores this information in a storage information table configured on the Internet of Things device 100 . In short, the authorized device includes the main authorization device and other terminal devices 400 authorized by the main authorization device. The main authorization device will also send the verification information, identity identifier and device type identifier corresponding to each terminal device 400 to the corresponding terminal device 400.

In this embodiment, the verification information is data used to verify whether the terminal device 400 can connect to the Internet of Things device 100. The verification information may include authorization data indicating whether the terminal device 400 has been authorized for connection and the number of the terminal device 400. Validity data indicating whether the authorization is valid; the identity identifier is data used to identify each terminal device 400, and the device type identifier is data indicating whether the terminal device 400 is the main authorizing device or the authorized device. When connecting to an IoT device requires authorization from the main authorization device, the authorization data can be generated by the main authorization device and then shared with other corresponding terminal devices. The authorization data can be a numerical code or character code randomly generated by the main authorization device. Alternatively, the authorization data can also be a numeric code or character code input by the user, and the authorization data can be multiple digits, such as 6 digits. Validity data can be generated by the main authorization device and then shared with other corresponding terminal devices.

Of course, in this implementation, the terminal device 400 that is successfully paired with the Internet of Things for the first time refers to the terminal device 400 that is successfully paired with the Internet of Things device 100 for the first time when the Internet of Things device 100 is put into use, or the terminal device 400 that is successfully paired with the Internet of Things device 100. After being set up, the terminal device 400 is successfully paired with the Internet of Things device 100 for the first time.

In order to help understanding, the following describes the authorized device and the main authorized device based on actual scenarios.

For example, the communication system includes the Internet of Things device 100, the server 200, and terminal device A, terminal device B, terminal device C, terminal device D, terminal device E, and terminal device F. At the beginning, each terminal device 400 is connected and paired with the Internet of Things device 100, but terminal device A is successfully paired first, then terminal device A is the main authorized device, terminal device B, terminal device C, terminal device D, terminal Device E and terminal device F are no longer paired with the Internet of Things device 100. At this time, terminal device A synchronizes its own verification information, identity identifier, and device type identifier to the Internet of Things device 100. Terminal device A interacts with terminal device B, terminal device C and terminal device D, and sends the verification information, identity identifier and device type identifier generated by it to the corresponding terminal device B, terminal device C and terminal device D to complete the authorization. That is to say, the authorized devices include terminal device A, terminal device B, terminal device C and terminal device D.

In this embodiment, other terminal devices 400 are authorized through the main authorization device. In this way, the user can determine the terminal devices 400 that the Internet of Things device 100 can connect to according to needs, and then authorize the corresponding terminal device 400 to improve the user experience. experience.

Optionally, in this implementation, step S120 includes determining the target device from the devices to be connected. The device to be connected is a terminal device in the environment where the Internet of Things device 100 is located, Bluetooth has been turned on, and the identity identifier is the same as the identity identifier in the authorization information table. 400.

In this embodiment, it is used to specifically determine the target device. The IoT device 100 can work in the master mode or the slave mode. Still taking the above-mentioned communication system including the Internet of Things device 100, the server 200 and terminal device A, terminal device B, terminal device C, terminal device D, terminal device E and terminal device F as an example, if the Bluetooth communication range of the Internet of Things device 100 includes terminal equipment A, terminal equipment B, terminal equipment C, terminal equipment E and terminal equipment F, then terminal equipment A, terminal equipment B and terminal equipment C are connectable devices. Then the target device is one of terminal device A, terminal device B, and terminal device C.

Optionally, in this embodiment, determining the target device from the devices to be connected includes determining whether there is a master authorized device in the device to be connected; if there is a master authorized device in the device to be connected, then using the master authorized device as the target device .

In this embodiment, using the main authorized device as the terminal device to be connected first can improve the user experience and ensure the control authority of the Internet of Things device owner over the Internet of Things device.

Optionally, in this embodiment, determining the target device from the devices to be connected also includes, if there is no master authorization device among the devices to be connected, using the device to be connected with the highest priority as the target device.

In this embodiment, when there is no primary authorized device among the devices to be connected, the connection sequence is determined based on priority, which can improve user experience.

Referring to FIG. 4 , optionally, in this embodiment, the Bluetooth connection method also includes, if the connection permission verification fails, performing steps S170 to S180.

Step S170: Determine whether all devices to be connected have been used as target devices.

Step S180: If there is a device to be connected that is not a target device, a new target device is determined from the device to be connected that is not a target device, and the step of obtaining the verification information of the target device is re-executed based on the new target device.

In this embodiment, when the target device cannot pass the connection verification, a new terminal device 400 is replaced as the target device to ensure that the authorized terminal device 400 is connected to the Internet of Things device 100 as much as possible to improve user experience.

Of course, in this embodiment, when the connection permission verification of the target device fails, the Internet of Things device can send the connection permission verification failure information to the main authorization device. The main authorization device receives the connection permission verification failure information. After receiving the information, the authorization data of the corresponding terminal device can be regenerated and shared with the IoT device and the corresponding terminal device.

Optionally, in this embodiment, determining a new target device from the devices to be connected that are not target devices includes obtaining the device to be connected with the highest priority as the new target. equipment.

In this embodiment, when selecting a new target device, the device is selected according to the order of priority, which can ensure that the selected result is more in line with user needs and improves user experience.

Optionally, in this embodiment, the Bluetooth connection method also includes: obtaining the number of connections for establishing a Bluetooth connection between the pre-stored authorized device and the Internet of Things device 100; and determining the number of connections based on the number of connections of the authorized device corresponding to each device to be connected. The priority of each device to be connected, where the greater the number of connections, the higher the priority.

In this embodiment, the number of connections to establish a Bluetooth connection between the authorized device and the Internet of Things device 100 is pre-stored, and the connection authority is determined based on the number of connections, which can further improve the user experience.

Optionally, in this embodiment, when the verification information includes authorization data and validity data, the connection permission verification is performed according to the verification information of the target device and the verification information corresponding to the target device, including, according to the verification information of the target device Information, the authorization data corresponding to the target device and the validity data corresponding to the target device, perform authorization verification and validity verification on the target device; if the authorization verification is successful and the validity verification is successful, the connection permission verification of the target device is determined. The verification is successful; if the authorization verification fails or the validity verification fails, it is determined that the connection permission verification fails.

In this embodiment, the target data is verified separately through authorization data and validity data, so that the connection status of the terminal device 400 and the Internet of Things device 100 can be controlled under different connection conditions, thereby improving user experience.

Optionally, in this embodiment, authorization verification and validity verification are performed on the target device based on the verification information of the target device, the authorization data corresponding to the target device, and the validity data corresponding to the target device, including determining whether the target device is Whether the verification information is consistent with the authorization data corresponding to the target device; if the verification information of the target device is consistent with the authorization data corresponding to the target device, it is determined that the authorization verification is successful; if the verification information of the target device is inconsistent with the authorization data corresponding to the target device, then It is determined that the authorization verification fails; if the validity data corresponding to the target device is in a valid state, the validity verification is successful; if the validity data corresponding to the target device is in an invalid state, the validity verification fails.

This embodiment is used to specifically perform authorization verification and validity verification.

In this embodiment, after determining that the authorization verification of the target device fails, the Internet of Things device can update the validity data of the target device and update the validity data to an invalid state. The IoT device can also notify the main authorization device of the information that the target device fails the authorization verification. After receiving the information that the target device fails the authorization verification, the main authorization device can re-authorize the target device, that is, re-authorize the target device. Generate the authorization verification code of the target device, synchronize the authorization verification code to the IoT device, and share it with the target device.

Optionally, in this embodiment, determining whether the verification information of the target device is consistent with the authorization data corresponding to the target device includes determining whether the target device is the main authorized device, and the main authorized device is the first device that is successfully paired with the Internet of Things device 100 ; If the target device is the main authorized device, then determine whether the verification information of the target device matches the authorization data corresponding to the target device; if the verification information of the target device matches the authorization data corresponding to the target device, then determine whether the verification information of the target device matches the authorization data corresponding to the target device. The authorization data corresponding to the device is consistent; if the verification information of the target device does not match the authorization data corresponding to the target device, obtain new authorization data; if the new authorization data is inconsistent with the old authorization data, determine that the verification information of the target device is consistent with the authorization data. The authorization data corresponding to the target device is consistent.

In this embodiment, when verifying the authorization data of the main authorization device, if the authorization verification of the main authorization device fails, the main authorization device is notified to update the authorization data, and if the main authorization data is successfully updated, , it is determined that the target device verification information is consistent with the authorization data corresponding to the target device, so that the control of the Internet of Things device 100 by the main authorized device can be prioritized.

Of course, in this embodiment, when the verification information of the target device does not match the authorization data corresponding to the target device, after obtaining the new authorization data, it can be re-executed to determine whether the verification information of the target device matches the authorization data corresponding to the target device. steps until the preset number of cycles is met.

In this embodiment, the validity status of the validity data of the main authorization device may be always valid. That is to say, as long as the target device is the main authorization device, then the validity verification of the main authorization device can be considered successful.

In a possible implementation, the identity includes the MAC address of the device. In another feasible implementation, the identity identifier is obtained from the hash function value of the characters composed of the Bluetooth MAC address of the terminal device 400 and the IMEI of the terminal device 400. The identity identifier can be the intercepted entire hash function value. Characters at certain specific positions, for example, specific 12-bit or 16-bit characters can be intercepted. The hash function value can be calculated through hash function, MD5, SHA1, SHA256 and other algorithms. When there are two or more IMEI numbers in the IMEI of the terminal device 400, the first IMEI number can be selected for calculation.

Using the hash function value of the characters composed of the MAC address of the terminal device 400 and the IMEI of the terminal device 400 as the identity of the terminal device 400 can prevent a third party from obtaining the Bluetooth MAC data of the terminal device 400 and further improve the efficiency of the Internet of Things device 100 security.

Optionally, in this embodiment, the Bluetooth connection method also includes, after establishing a Bluetooth connection with the target device, obtaining the target device's preference information for the Internet of Things device 100; and operating according to the preference information.

When the terminal device operates the Internet of Things device, the Internet of Things device records the operation content and can synchronize the content to the server. Based on historical operation information, the server can calculate personal preferences through preference algorithms, establish a personal database, and update and improve the database according to the corresponding user's operations. After the terminal device establishes a connection with the Internet of Things device, the Bluetooth Internet of Things device sends the identity of the terminal device to the server to obtain historical operation information.

In this embodiment, the IoT device 100 saves the historical operation information of the target device, so that after the target device establishes a Bluetooth connection with the IoT device 100 again, it operates based on the historical operation information, thereby further improving the user experience.

Referring to FIG. 5 , an embodiment of the present application also provides a Bluetooth connection device 110 . The Bluetooth connection device 110 includes a first acquisition module 111 , a first determination module 112 , a second acquisition module 113 , a second determination module 114 and Verification module 115. The Bluetooth connection device 110 includes a software function module that can be stored in the memory 120 in the form of software or firmware or solidified in the operating system (Operating System, OS) of the Internet of Things device 100 .

The first acquisition module 111 is used to acquire a pre-stored authorization information table. The authorization information table includes the identity of the authorized device and the verification information of the authorized device.

The first acquisition mode in this embodiment is used to perform step S110. For detailed description of the first acquisition mode, please refer to the description of step S110.

The first determination module 112 is used to determine the target device. The target device is a device in the environment where the Internet of Things device 100 is located, and the identity identifier is the same as the identity identifier of the authorized device in the authorization information table.

The first determination module 112 in this embodiment is used to perform step S120. For detailed description of the first determination module 112, please refer to the description of step S120.

The second acquisition module 113 is used to acquire verification information of the target device.

The second acquisition module 113 in this embodiment is used to perform step S130. For a specific description of the second acquisition module 113, please refer to the description of step S130.

The second determination module 114 is configured to determine the verification information corresponding to the target device from the authorization information table according to the identity of the target device.

The second determination module 114 in this embodiment is used to perform step S140. For detailed description of the second determination module 114, please refer to the description of step S140.

The verification module 115 is configured to perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device; and when the connection permission verification is successful, establish a Bluetooth connection with the target device.

The verification module 115 in this embodiment is used to perform steps S150 to S160. For a specific description of the verification module 115, please refer to the description of steps S150 to S160.

Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims (14)

1. A Bluetooth connection method, characterized in that it is applied to Internet of Things devices, and the method includes: Obtain a pre-stored authorization information table. The authorization information table includes the identity of the authorized device and the verification information of the authorized device; the verification information includes authorization data and validity data, and the authorization data represents whether the connection is authorized. , the validity data represents whether the connection authorization is valid; Determine the target device, which is a device in the environment where the Internet of Things device is located and whose identity is the same as the identity of the authorized device in the authorization information table; Obtain verification information of the target device; Determine the verification information corresponding to the target device from the authorization information table according to the identity of the target device; Perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device; If the connection permission verification is successful, a Bluetooth connection is established with the target device. 2. The method according to claim 1, characterized in that determining the target device includes: Determine the target device from the devices to be connected. The device to be connected is a device in the environment where the Internet of Things device is located, Bluetooth has been turned on, and the identity identifier is the same as the identity identifier in the authorization information table. 3. The method according to claim 2, wherein determining the target device from the devices to be connected includes: Determine whether there is a main authorized device among the devices to be connected, and the main authorized device is the first device that is successfully paired with the Internet of Things device; If there is a main authorized device in the device to be connected, the main authorized device is used as the target device. 4. The method according to claim 3, wherein determining the target device from the devices to be connected further includes: If there is no master authorized device among the devices to be connected, the device to be connected with the highest priority is used as the target device. 5. The method according to claim 2, characterized in that, the method further comprises: If the connection permission verification is unsuccessful, determine whether all devices to be connected have been used as target devices; If there is a device to be connected that is not a target device, determine a new target device from the device to be connected that is not a target device; The step of obtaining the verification information of the target device is re-executed according to the new target device. 6. The method of claim 5, wherein determining a new target device from devices to be connected that are not target devices includes: From the devices to be connected that are not target devices, the device to be connected with the highest priority is obtained as the new target device. 7. The method according to claim 4 or 6, characterized in that the method further comprises: Obtain the pre-stored number of connections for establishing a Bluetooth connection between the authorized device and the Internet of Things device; determine the priority of each device to be connected according to the number of connections of the authorized device corresponding to each device to be connected, where, connection The greater the number, the higher the priority. 8. The method according to claim 1, characterized in that the verification information includes authorization data and validity data; The connection permission verification based on the verification information of the target device and the verification information corresponding to the target device includes: Perform authorization verification and validity verification on the target device according to the verification information of the target device, the authorization data corresponding to the target device, and the validity data corresponding to the target device; If the authorization verification is successful and the validity verification is successful, it is determined that the connection permission verification of the target device is successful; If the authorization check fails or the validity check fails, it is determined that the connection permission check fails. 9. The method according to claim 8, characterized in that, based on the verification information of the target device, the authorization data corresponding to the target device and the validity data corresponding to the target device, the target device is Perform authorization verification and validity verification, including: Determine whether the verification information of the target device is consistent with the authorization data corresponding to the target device; If the verification information of the target device is consistent with the authorization data corresponding to the target device, it is determined that the authorization verification is successful; If the verification information of the target device is inconsistent with the authorization data corresponding to the target device, it is determined that the authorization verification fails; If the validity data corresponding to the target device is in a valid state, the validity verification is successful; If the validity data corresponding to the target device is in an invalid state, the validity check fails. 10. The method according to claim 9, wherein the determining whether the verification information of the target device is consistent with the authorization data corresponding to the target device includes: Determine whether the target device is the main authorized device, and the main authorized device is the first device that is successfully paired with the Internet of Things device; If the target device is the primary authorized device, determine whether the verification information of the target device matches the authorization data corresponding to the target device; If the verification information of the target device is consistent with the authorization data corresponding to the target device, it is determined that the verification information of the target device is consistent with the authorization data corresponding to the target device; If the verification information of the target device does not match the authorization data corresponding to the target device, obtain new authorization data; If the new authorization data is inconsistent with the old authorization data, it is determined that the verification information of the target device is consistent with the authorization data corresponding to the target device. 11. The method according to any one of claims 1-6 or 8-10, characterized in that the identity identifier is a hash function value of characters composed of the MAC address of the terminal device and the IMEI of the terminal device. get. 12. The method according to claim 1, characterized in that the method further comprises, after establishing a Bluetooth connection with the target device, obtaining the target device's preference information for Internet of Things devices; according to the preference Information runs. 13. A Bluetooth connection device, characterized in that it is applied to Internet of Things equipment, and the device includes: The first acquisition module is used to obtain a pre-stored authorization information table. The authorization information table includes the identity of the authorized device and the verification information of the authorized device; the verification information includes authorization data and validity data. The authorization data represents whether the connection is authorized, and the validity data represents whether the connection authorization is valid; The first determination module is used to determine the target device. The target device is a device in the environment where the Internet of Things device is located, and the identity identifier is the same as the identity identifier of the authorized device in the authorization information table; The second acquisition module is used to acquire the verification information of the target device; a second determination module, configured to determine the verification information corresponding to the target device from the authorization information table according to the identity of the target device; A verification module configured to perform connection permission verification based on the verification information of the target device and the verification information corresponding to the target device; and when the connection permission verification is successful, establish a Bluetooth connection with the target device . 14. An Internet of Things device, characterized in that the Internet of Things device includes a memory and a processor, the memory is electrically connected to the processor, an executable program is stored in the memory, and the processor When the executable program is executed, the method as described in any one of claims 1-11 is implemented.