Bluetooth key method and device based on networking, medium, equipment and program product

Abstract

The invention discloses a networking-based Bluetooth key method and device, a medium, equipment and a program product, and belongs to the technical field of Bluetooth transmission. The method mainly comprises the following steps: establishing a first connection relationship between a central node of the vehicle-mounted Bluetooth and an auxiliary node of the vehicle-mounted Bluetooth, and establishing a Bluetooth connection relationship between the central node and target equipment; acquiring a connection parameter of the Bluetooth connection relationship by using the auxiliary node according to the first connection relationship; monitoring a data packet transmitted to the central node by the target equipment through the Bluetooth connection relation by using the auxiliary node through the connection parameter, and calculating a first relative distance of the target equipment relative to the auxiliary node by using the data packet; and the center node obtains a relative distance by using the first connection relationship, and calculates a second relative distance of the target device relative to the center node network according to the first relative distance. According to the method, the deployment difficulty can be reduced under the condition of ensuring data acquisition and transmission, and meanwhile, the information receiving speed is increased.

Description

Technical Field

[0001] The present application relates to the field of Bluetooth transmission technology, and in particular to a Bluetooth key method, device, storage medium, electronic device and computer program product based on networking. Background Art

[0002] In the prior art, the Bluetooth-based non-sensing unlocking method mainly includes a single-point Bluetooth module non-sensing unlocking method and a multi-point Bluetooth RSSI (Received Signal Strength Indication) evaluation non-sensing unlocking method based on monitoring. The single-point Bluetooth module non-sensing unlocking method cannot determine the specific direction of the mobile phone approaching because it has only one point. It can only determine whether the target device has entered the effective range. Therefore, it cannot determine the location of the target device such as a mobile phone, and therefore cannot perform the unlocking process when the target device reaches a certain accurate distance. The existing multi-point Bluetooth RSSI evaluation based on monitoring can be configured in multiple points. Although it uses multi-point Bluetooth and makes position judgments based on the RSSI signals monitored by Bluetooth modules at different positions, it increases the difficulty of deployment because different Bluetooth modules need to be physically connected through CAN transmission, which is not conducive to saving costs and reducing the difficulty of the system. Summary of the invention

[0003] In view of the problems in the prior art that the target location cannot be accurately determined and the deployment complexity is high when determining the target location, the present application mainly provides a networking-based Bluetooth key method, device, storage medium, electronic device and computer program product.

[0004] In order to achieve the above-mentioned purpose, the first technical solution adopted in the present application is: a Bluetooth key method based on networking, which includes: establishing a first connection relationship between the central node of the vehicle-mounted Bluetooth and the auxiliary node of the vehicle-mounted Bluetooth, and establishing a Bluetooth connection relationship between the central node and the target device; according to the first connection relationship, using the auxiliary node to obtain the connection parameters of the Bluetooth connection relationship; through the connection parameters, using the auxiliary node to monitor the data packets transmitted by the target device to the central node through the Bluetooth connection relationship, and using the data packets to calculate the first relative distance of the target device relative to the auxiliary node; the central node uses the first connection relationship to obtain the first relative distance, and calculates the second relative distance of the target device relative to the central node network based on the first relative distance.

[0005] Optionally, the networking-based Bluetooth key method also includes: the central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and calculates and determines subsequent operations of the vehicle on the host end based on the second relative distance.

[0006] Optionally, the central node obtains the relative distance using the first connection relationship, and calculates the second relative distance of the target device relative to the central node network based on the first relative distance, including: the central node obtains the relative distance of the target device calculated by each auxiliary node in the central node network using the first connection relationship, and calculates the second relative distance of the target device relative to the central node network based on all the first relative distances in the central node.

[0007] Optionally, the first connection relationship includes a wireless connection relationship and a wireless networking connection mode, and the central node establishes a Bluetooth connection relationship by sending a directional broadcast to a pre-authorized target device.

[0008] Optionally, according to the first connection relationship, the connection parameters of the Bluetooth connection relationship are obtained by using the auxiliary node, including: the auxiliary node obtains the connection parameters of the Bluetooth connection relationship according to the first connection relationship by maintaining a periodic wireless receiving mode.

[0009] The second technical solution adopted in the present application is: a Bluetooth key device based on networking, which includes: a connection relationship establishment module, which is used to establish a first connection relationship between the central node of the vehicle-mounted Bluetooth and the auxiliary node of the vehicle-mounted Bluetooth, and establish a Bluetooth connection relationship between the central node and the target device; a connection parameter acquisition module, which is used to obtain the connection parameters of the Bluetooth connection relationship using the auxiliary node according to the first connection relationship; a first relative distance calculation module, which is used to use the connection parameters and the auxiliary node to monitor the data packets transmitted from the target device to the central node through the Bluetooth connection relationship, and use the data packets to calculate the first relative distance of the target device relative to the auxiliary node; a second relative distance calculation module, which is used for the central node to obtain the first relative distance using the first connection relationship, and calculate the second relative distance of the target device relative to the central node network according to the first relative distance.

[0010] Optionally, a networking-based Bluetooth key device is characterized in that it also includes: the central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and calculates and determines the subsequent operation of the vehicle at the host end based on the second relative distance.

[0011] Optionally, the central node uses the first connection relationship to obtain the relative distance, and calculates the second relative distance of the target device relative to the central node network based on the first relative distance, including: the central node uses the first connection relationship to obtain the relative distance of the target device calculated by each of the auxiliary nodes in the central node network, and calculates the second relative distance of the target device relative to the central node network based on all the first relative distances in the central node.

[0012] Optionally, the first connection relationship includes a wireless connection relationship and a wireless networking connection mode, and the central node establishes a Bluetooth connection relationship by sending a directional broadcast to a pre-authorized target device.

[0013] Optionally, according to the first connection relationship, the connection parameters of the Bluetooth connection relationship are obtained by using the auxiliary node, including: the auxiliary node obtains the connection parameters of the Bluetooth connection relationship according to the first connection relationship by maintaining a periodic wireless receiving mode.

[0014] The third technical solution adopted in the present application is: a computer-readable storage medium storing a computer program / instruction, which is operated to execute the networking-based Bluetooth key method in solution one.

[0015] The fourth technical solution adopted in the present application is: a computer device, including a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to implement the networking-based Bluetooth key method in Solution 1.

[0016] The fifth technical solution adopted in the present application is: a computer program product, including a computer program / instruction, which, when executed by a processor, implements the networking-based Bluetooth key method in Solution 1.

[0017] The technical solution of the present application can achieve the following beneficial effects: the central node and the auxiliary nodes of the present application can communicate autonomously through wireless networking, without the need for physical connection through CAN, LIN, UART, etc., which greatly reduces the dependence on the vehicle bus and simplifies the deployment difficulty. In addition, the central node of the present application directly calculates the relative position of the target device based on the auxiliary node data, and the host side of the vehicle only needs to obtain the location information without paying attention to the deployment method of the car key wireless network. In addition, when calculating the RSSI of the target device, the auxiliary node can adopt a synchronous detection method without receiving a complete data packet and CRC calculation, thereby improving the receiving speed and the calculation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of a specific implementation of a Bluetooth key method based on networking in the present application;

[0020] Figure 2It is a schematic diagram of the data transmission direction of a Bluetooth key method based on networking in the present application;

[0021] Figure 3 It is a schematic diagram of a specific implementation of a networking-based Bluetooth key device of the present application.

[0022] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present application.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0025] The inventive concept of the present application is: from the perspective of vehicle-mounted Bluetooth, the more Bluetooth modules there are, the more accurate the location judgment of the mobile phone will be, and the stronger the anti-interference ability will be. However, the existing deployment method will increase the difficulty of wiring the system. Therefore, a discrete and flexibly deployable vehicle key (contactless unlocking) solution is needed. Taking into account the economy, that is, the requirements for hardware, the requirements for the number of deployments, and stability, this application proposes a Bluetooth key method based on networking.

[0026] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0027] Figure 1An implementation of a networking-based Bluetooth key method of the present application is shown.

[0028] Figure 1 The method shown includes: step S101, establishing a first connection relationship between a central node of the vehicle-mounted Bluetooth and an auxiliary node of the vehicle-mounted Bluetooth, and establishing a Bluetooth connection relationship between the central node and a target device;

[0029] Step S102, obtaining connection parameters of the Bluetooth connection relationship using the auxiliary node according to the first connection relationship;

[0030] Step S103, using the connection parameters, using the auxiliary node to monitor the data packet transmitted from the target device to the central node through the Bluetooth connection relationship, and using the data packet to calculate the first relative distance of the target device to the auxiliary node;

[0031] Step S104: the central node obtains the relative distance using the first connection relationship, and calculates the second relative distance of the target device relative to the central node network according to the first relative distance.

[0032] The central node and the auxiliary nodes of this specific implementation method communicate autonomously through wireless networking, without the need for physical connection through CAN, LIN, UART, etc., which greatly reduces the dependence on the vehicle bus and simplifies the deployment difficulty. The central node directly calculates the relative position of the target device based on the auxiliary node data. The host side of the vehicle only needs to obtain the location information without paying attention to the deployment method of the car key wireless network. In addition, when calculating the RSSI of the target device, the auxiliary node can adopt a synchronous detection method without receiving the complete data packet and CRC calculation, thereby improving the receiving speed and improving the calculation efficiency.

[0033] Specifically, Figure 2 Schematic diagram of the data transmission direction of a Bluetooth key method based on networking in this application. Figure 2 As shown, a central node and an auxiliary node are distinguished in the wireless Bluetooth module carried by the vehicle, and the auxiliary node and the central node have different roles in actual work, that is, the central node is responsible for communicating with the target device such as a mobile phone, and the auxiliary node is responsible for communicating with the central node. The auxiliary node uses the central node to control the monitoring of the data packet sent by the mobile phone and calculates its RSSI relative to the current auxiliary node, and then sends the RSSI value to the central node through wireless transmission. The central node then sends it to the host end through a communication interface such as CAN, LIN or UART, and then the host end decides whether to unlock or lock the vehicle based on the data.

[0034] Preferably, the number of central nodes is 1, and the number of auxiliary nodes can be set to any number according to requirements.

[0035] exist Figure 1 In the illustrated embodiment, the networking-based Bluetooth key method includes step S101, establishing a first connection relationship between a central node of the vehicle Bluetooth and an auxiliary node of the vehicle Bluetooth, and establishing a Bluetooth connection relationship between the central node and a target device.

[0036] In a specific embodiment of the present application, the first connection relationship includes a wireless connection relationship and a wireless networking connection mode, and the central node establishes a Bluetooth connection relationship by sending a directional broadcast to a pre-authorized target device.

[0037] Specifically, the central node and the auxiliary node in the Bluetooth module mounted on the vehicle perform automatic matching and wireless networking after power-on, thereby establishing a first connection relationship between the central node of the vehicle Bluetooth and the auxiliary node of the vehicle Bluetooth, and using the first connection relationship to perform data interaction between the central node and the auxiliary node, wherein the first connection relationship includes a wireless connection relationship and a wireless networking connection method. The advantage of using a wireless connection method is good stability and transmission efficiency, but it may greatly increase the resource occupation of the central node when there are too many auxiliary nodes. The advantage of using a networking connection method is that there is no actual link, resources are saved, and more auxiliary nodes can be carried. In addition, the more auxiliary nodes, the more accurate the positioning. The disadvantage is that the transmission efficiency is relatively low.

[0038] The central node binds the corresponding target device after being authorized in advance and sends a directional broadcast to it. When the target device receives the broadcast packet bound to the central node, it will initiate a connection, thereby completing the establishment of a Bluetooth connection relationship between the central node and the target device.

[0039] exist Figure 1 In the illustrated embodiment, the networking-based Bluetooth key method includes step S102, obtaining connection parameters of the Bluetooth connection relationship using an auxiliary node according to the first connection relationship.

[0040] In a specific embodiment of the present application, according to the first connection relationship, the connection parameters of the Bluetooth connection relationship are obtained using an auxiliary node, including: the auxiliary node obtains the connection parameters of the Bluetooth connection relationship according to the first connection relationship by maintaining a periodic wireless receiving mode.

[0041] Specifically, after the first connection relationship and the Bluetooth connection relationship are established, the central node starts the Bluetooth broadcast mode to receive the relevant data sent by the target device, and the auxiliary node starts the periodic wireless data receiving mode to monitor the data received by the central node. The auxiliary node uses the auxiliary node to obtain the connection parameters of the Bluetooth connection relationship according to the first connection relationship, so that the auxiliary node can achieve the purpose of using the central node to obtain the relevant data packets sent by the target device, that is, to achieve the periodic wireless data receiving mode, and the relevant data sent by the target device is RSSI data.

[0042] exist Figure 1 In the illustrated embodiment, the networking-based Bluetooth key method includes step S103, using the connection parameters to utilize the auxiliary node to monitor the data packets transmitted from the target device to the central node via the Bluetooth connection relationship, and using the data packets to calculate the first relative distance of the target device relative to the auxiliary node.

[0043] Specifically, after the auxiliary node obtains the connection parameters between the central node and the target device, it starts the periodic wireless data receiving mode to monitor the data packets transmitted by the target device to the central node through the Bluetooth connection relationship. The data packets contain the RSSI value of the target device. Then the target device calculates the distance between the target device and the current auxiliary node using the existing RSSI-based ranging positioning method, and transmits the calculated first relative distance to the central node. Among them, when the central node calculates the first relative position of the auxiliary node, it also synchronously calculates the distance of the target device relative to the central node, and the central node and all auxiliary nodes use a synchronous detection method when calculating RSSI to determine the position of the target device.

[0044] exist Figure 1 In the illustrated embodiment, the networking-based Bluetooth key method includes step S104, where the central node obtains a relative distance using a first connection relationship, and calculates a second relative distance of the target device relative to the central node network based on the first relative distance.

[0045] In a specific embodiment of the present application, the central node uses the first connection relationship to obtain the relative distance, and calculates the second relative distance of the target device relative to the central node network based on the first relative distance, including: the central node uses the first connection relationship to obtain the relative distance of the target device calculated by each auxiliary node in the central node network, and calculates the second relative distance of the target device relative to the central node network based on all the first relative distances in the central node.

[0046] Specifically, after receiving all the first relative distances transmitted by all the auxiliary nodes, the central node obtains the second relative distance of the target device relative to the central node network through the existing RSSI correlation algorithm based on the relative distance between the target device and itself and all the first relative distances, that is, the accurate position of the target device relative to the vehicle is calculated. During the communication process, the auxiliary nodes do not perform any communication work between each other, and they only communicate with the central node.

[0047] In a specific embodiment of the present application, the networking-based Bluetooth key method also includes that the central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and calculates and determines the subsequent operation of the vehicle on the host end based on the second relative distance; wherein the second connection relationship includes CAN transmission mode, LIN transmission mode and UART transmission mode.

[0048] Specifically, in this application, there is only an actual physical connection relationship between the central node and the vehicle system. When the central node accurately calculates the location of the target device, the location of the target device is transmitted to the vehicle host through a transmission line including a CAN transmission method, a LIN transmission method, and a UART transmission method. Then, the vehicle host determines and judges whether to perform related operations such as locking or unlocking according to the actual application scenario.

[0049] Figure 3 A specific implementation of a networking-based Bluetooth key device of the present application is shown.

[0050] exist Figure 3 In the specific implementation shown, the networking-based Bluetooth key device mainly includes: a connection relationship establishment module 301, which is used to establish a first connection relationship between the central node of the vehicle Bluetooth and the auxiliary node of the vehicle Bluetooth, and to establish a Bluetooth connection relationship between the central node and the target device;

[0051] A connection parameter acquisition module 302, configured to acquire connection parameters of a Bluetooth connection relationship using an auxiliary node according to the first connection relationship;

[0052] A first relative distance calculation module 303 is used to monitor the data packets transmitted from the target device to the central node through the Bluetooth connection relationship by using the auxiliary node according to the connection parameters, and calculate the first relative distance of the target device to the auxiliary node by using the data packets;

[0053] The second relative distance calculation module 304 is used for the central node to obtain the relative distance using the first connection relationship, and calculate the second relative distance of the target device relative to the central node network according to the first relative distance.

[0054] In a specific embodiment of the present application, a networking-based Bluetooth key device is characterized in that it also includes: the central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and calculates and determines the subsequent operation of the vehicle on the host end based on the second relative distance; wherein the second connection relationship includes CAN transmission mode, LIN transmission mode and UART transmission mode.

[0055] In a specific embodiment of the present application, the central node uses the first connection relationship to obtain the relative distance, and calculates the second relative distance of the target device relative to the central node network based on the first relative distance, including: the central node uses the first connection relationship to obtain the relative distance of the target device calculated by each of the auxiliary nodes in the central node network, and calculates the second relative distance of the target device relative to the central node network based on all the first relative distances in the central node.

[0056] In a specific embodiment of the present application, the first connection relationship includes a wireless connection relationship and a wireless networking connection mode, and the central node establishes a Bluetooth connection relationship by sending a directional broadcast to a pre-authorized target device.

[0057] In a specific embodiment of the present application, according to the first connection relationship, the connection parameters of the Bluetooth connection relationship are obtained using an auxiliary node, including: the auxiliary node obtains the connection parameters of the Bluetooth connection relationship according to the first connection relationship by maintaining a periodic wireless receiving mode.

[0058] The networking-based Bluetooth key device provided in the present application can be used to execute the networking-based Bluetooth key method described in any of the above embodiments. Its implementation principles and technical effects are similar and will not be repeated here.

[0059] In a specific embodiment of the present application, each functional module in a networking-based Bluetooth key device of the present application may be directly in hardware, in a software module executed by a processor, or in a combination of the two.

[0060] The software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from and write information to the storage medium.

[0061] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration. In an alternative, the storage medium may be integrated with the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0062] In another specific embodiment of the present application, a computer-readable storage medium stores a computer program / instruction, and the computer program / instruction is operated to execute the networking-based Bluetooth key method described in the above embodiment.

[0063] In a specific embodiment of the present application, a computer device includes a memory, a processor, and a computer program stored in the memory, and the processor executes the computer program to implement the networking-based Bluetooth key method described in the above embodiment.

[0064] In a specific embodiment of the present application, a computer program product includes a computer program / instruction, and when the computer program / instruction is executed by a processor, the networking-based Bluetooth key method described in the above embodiment is implemented.

[0065] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0066] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0067] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A Bluetooth key method based on networking, characterized in that: include: Establishing a first connection relationship between a central node of the vehicle-mounted Bluetooth and an auxiliary node of the vehicle-mounted Bluetooth, and establishing a Bluetooth connection relationship between the central node and a target device; According to the first connection relationship, using the auxiliary node to obtain connection parameters of the Bluetooth connection relationship; Using the connection parameters, using the auxiliary node to monitor the data packets transmitted from the target device to the central node through the Bluetooth connection relationship, and using the data packets to calculate a first relative distance of the target device to the auxiliary node; The central node obtains the first relative distance by using the first connection relationship, and calculates a second relative distance of the target device relative to the central node network according to the first relative distance.

2. The networking-based Bluetooth key method according to claim 1, characterized in that: Also includes: The central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and the host end calculates and determines subsequent operations of the vehicle according to the second relative distance.

3. The networking-based Bluetooth key method according to claim 1, characterized in that: The central node obtains the relative distance by using the first connection relationship, and calculates a second relative distance of the target device relative to the central node network according to the first relative distance, including: The central node uses the first connection relationship to obtain the relative distance of the target device calculated by each of the auxiliary nodes in the central node network, and calculates the second relative distance of the target device relative to the central node network in the central node based on all the first relative distances.

4. The networking-based Bluetooth key method according to claim 1, characterized in that: The first connection relationship includes a wireless connection relationship and a wireless networking connection mode, and the central node establishes the Bluetooth connection relationship by sending a directional broadcast to the pre-authorized target device.

5. The networking-based Bluetooth key method according to claim 1, characterized in that: The acquiring, according to the first connection relationship, connection parameters of the Bluetooth connection relationship by using the auxiliary node includes: The auxiliary node obtains the connection parameters of the Bluetooth connection relationship according to the first connection relationship by maintaining a periodic wireless receiving mode.

6. A Bluetooth key device based on networking, characterized in that: include: A connection relationship establishing module, used to establish a first connection relationship between a central node of the vehicle-mounted Bluetooth and an auxiliary node of the vehicle-mounted Bluetooth, and to establish a Bluetooth connection relationship between the central node and a target device; a connection parameter acquisition module, configured to acquire, according to the first connection relationship, connection parameters of the Bluetooth connection relationship using the auxiliary node; A first relative distance calculation module, configured to monitor, by means of the connection parameters, a data packet transmitted from the target device to the central node via the Bluetooth connection relationship using the auxiliary node, and calculate a first relative distance of the target device relative to the auxiliary node using the data packet; The second relative distance calculation module is used for the central node to obtain the first relative distance by using the first connection relationship, and calculate the second relative distance of the target device relative to the central node network according to the first relative distance.

7. The networking-based Bluetooth key device according to claim 6, characterized in that: Also includes: The central node transmits the second relative distance to the host end through a second connection relationship between the central node and the host end of the vehicle, and the host end calculates and determines subsequent operations of the vehicle according to the second relative distance.

8. A computer-readable storage medium storing a computer program / instruction, characterized in that: The computer program / instructions are operated to execute the networking-based Bluetooth key method according to any one of claims 1-6.

9. A computer device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the networking-based Bluetooth key method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the networking-based Bluetooth key method as described in any one of claims 1 to 6 is implemented.

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