A sensorless vehicle entry method, device and system

Abstract

The embodiments of this specification provide a method for seamless vehicle entry, which is applied to a vehicle equipped with a Bluetooth module, wherein the Bluetooth module includes a Bluetooth chip, and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different locations of the vehicle, including: receiving Bluetooth signals emitted by a mobile Bluetooth device through the multiple Bluetooth antennas to perform a Bluetooth backconnection with the mobile Bluetooth device; in response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating the distance between the mobile Bluetooth device and the vehicle based on the signal strength of the Bluetooth signal received by the multiple Bluetooth antennas; determining whether the distance reaches a threshold; and if so, executing seamless vehicle entry control for the vehicle. Through the above technical solution, the advantages of the simple and convenient pairing of a single Bluetooth chip are utilized; multiple Bluetooth antennas are also used for multi-point positioning, thereby improving positioning accuracy; at the same time, the stability of the Bluetooth connection is improved, thereby enhancing the user experience.

Description

Technical Field

[0001] This specification relates to the field of communication technology, and in particular to a method, device, and system for contactless vehicle entry. Background Art

[0002] Passive Entry Passive Start (PEPS) systems, as a mature and stable technology, have been widely adopted in vehicles. For vehicles equipped with PEPS, owners no longer need to manually operate the vehicle key; simply bringing the key near the vehicle automatically unlocks the vehicle, and automatically locks the vehicle when the key is away.

[0003] With the advancement of intelligent vehicles, digital car keys based on Bluetooth technology are gradually replacing traditional physical car keys. Digital car keys combine software and hardware technologies to give mobile phones or wearable devices the functionality of car keys. For example, car owners can control their vehicles using a mobile phone or other wearable device that has established a Bluetooth connection with the vehicle, achieving Passive Keyless Entry (PKE). This allows users to control the vehicle through automatic device recognition without user intervention. Summary of the Invention

[0004] In view of this, one or more embodiments of this specification provide a method, device, and system for sensorless vehicle entry to solve the problems existing in the related art.

[0005] To achieve the above objectives, one or more embodiments of this specification provide the following technical solutions:

[0006] According to a first aspect of an embodiment of this specification, a method for sensorless vehicle entry is provided, which is applied to a vehicle equipped with a Bluetooth module, the Bluetooth module including a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different locations in the vehicle. The method includes:

[0007] receiving a Bluetooth signal sent by a mobile Bluetooth device through the multiple Bluetooth antennas to establish a Bluetooth backconnection with the mobile Bluetooth device;

[0008] In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0009] Determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

[0010] According to a second aspect of an embodiment of this specification, a sensorless vehicle entry device is provided, which is applied to a vehicle equipped with a Bluetooth module, the Bluetooth module including a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different locations in the vehicle. The device includes:

[0011] a receiving module, configured to receive Bluetooth signals sent by a mobile Bluetooth device through the multiple Bluetooth antennas, so as to establish a Bluetooth backconnection with the mobile Bluetooth device;

[0012] a calculation module, in response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0013] The judgment module determines whether the distance reaches a threshold; if so, performs sensorless entry control for the vehicle.

[0014] According to a third aspect of an embodiment of this specification, a sensorless vehicle entry system is provided, the system comprising:

[0015] Vehicle Bluetooth module,

[0016] receiving Bluetooth signals sent by a mobile Bluetooth device through multiple Bluetooth antennas to establish a Bluetooth backlink with the mobile Bluetooth device; and

[0017] In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0018] The Bluetooth module includes a Bluetooth chip and a plurality of Bluetooth antennas connected to the Bluetooth chip and distributed at different locations of the vehicle;

[0019] Vehicle Control Module,

[0020] Determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

[0021] The technical solutions provided by the embodiments of this specification may have the following beneficial effects:

[0022] By expanding a single Bluetooth chip with multiple Bluetooth antennas and using them to receive Bluetooth signals from mobile Bluetooth devices, the distance between the mobile Bluetooth device and the vehicle can be calculated based on the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas, thereby enabling seamless vehicle entry control when the distance reaches a threshold. The above technical solution, on the one hand, can take advantage of the simplicity and convenience of pairing a single Bluetooth chip, avoiding the problem of multiple pairings affecting the user experience. On the other hand, multiple Bluetooth antennas can be used for multi-point positioning, thereby improving positioning accuracy and resolving the low positioning accuracy of traditional single Bluetooth chips. At the same time, there is no need to rely on the keep-alive capability of the mobile Bluetooth device, which improves the stability of the Bluetooth connection and enhances the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a sensorless vehicle entry method provided by an exemplary embodiment of this specification;

[0024] Figure 2 This is a schematic diagram of the position layout of multiple Bluetooth modules on a vehicle provided by an exemplary embodiment of this specification;

[0025] Figure 3 This is a flow chart of a method for sensorless vehicle entry provided by an exemplary embodiment of this specification;

[0026] Figure 4 This is a schematic diagram of the position layout of a Bluetooth chip and a Bluetooth antenna on a vehicle provided by an exemplary embodiment of this specification;

[0027] Figure 5 This is a schematic structural diagram of a sensorless vehicle entry system provided by an exemplary embodiment of this specification;

[0028] Figure 6 This is a schematic structural diagram of an electronic device in which a sensorless vehicle entry device is provided in an exemplary embodiment of this specification;

[0029] Figure 7 This is a block diagram of a sensorless vehicle entry device provided by an exemplary embodiment of this specification. DETAILED DESCRIPTION

[0030] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments are not intended to represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of one or more embodiments of this specification, as detailed in the appended claims.

[0031] It should be noted that in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than those described in this specification. In addition, a single step described in this specification may be broken down into multiple steps for description in other embodiments, and multiple steps described in this specification may be combined into a single step for description in other embodiments.

[0032] In related technologies, when achieving contactless entry into the vehicle, the vehicle needs to use the Bluetooth module it is equipped with to receive the Bluetooth signal sent by the user's mobile phone for positioning, and then determine whether the distance between the owner and the vehicle reaches a preset threshold based on the positioning distance to determine whether the vehicle should be unlocked or locked.

[0033] See Figure 1 , Figure 1 This is a schematic diagram of a sensorless vehicle entry method provided by an exemplary embodiment of this specification. Figure 1 As shown, when the owner reaches position A, the distance between the owner and the vehicle is less than a first threshold, and the vehicle performs an unlocking operation, allowing the user to unlock the vehicle without having to operate the phone or the vehicle. When the owner leaves the vehicle and reaches position B, the distance between the owner and the vehicle is greater than the first threshold, and the vehicle can perform a locking operation.

[0034] It is worth noting that the user can also set a second threshold for the vehicle to determine whether to lock it, such as Figure 1 As shown, when the owner leaves the vehicle and walks to position C, the vehicle can perform a locking operation because the distance between the owner and the vehicle is greater than the second threshold.

[0035] Depending on the number of Bluetooth modules installed in a vehicle, positioning solutions can be divided into those based on a single Bluetooth module and those based on multiple Bluetooth modules. Typically, each Bluetooth module includes a Bluetooth chip and a Bluetooth antenna.

[0036] Due to the limitations of Bluetooth signal wavelength and power, positioning accuracy is usually not high when based on a single Bluetooth module, and the positioning error can even reach 2 meters. However, when positioning is based on multiple Bluetooth modules, the positioning error is only about 30 centimeters, which is much smaller than the positioning solution based on a single Bluetooth chip.

[0037] Although the positioning solution based on a single Bluetooth module has low positioning accuracy, it is often used for later modification of vehicles due to its simple installation and low cost. By adding a Bluetooth module to vehicles that do not have the sensorless entry function, the sensorless function can be achieved.

[0038] Although the positioning solution based on multiple Bluetooth modules can improve positioning accuracy, due to the complex installation process, it is usually installed by car manufacturers when the vehicle is produced, so that the vehicle has a built-in sensorless function when it leaves the factory.

[0039] During the process of contactless entry into the vehicle, whether it is a positioning solution based on a single Bluetooth module or a positioning solution based on multiple Bluetooth modules, when the vehicle establishes a Bluetooth connection with the digital car key, a connection solution based on application preservation or a solution based on Bluetooth protocol pairing can be adopted.

[0040] Among them, application keep-alive means that the application process of the mobile phone is not blocked by the system. If the keep-alive solution is not used, the application is likely to be blocked in the background due to insufficient resources, resulting in the user being unable to receive important messages in time, which affects the user experience.

[0041] At present, in the connection solution based on application keep-alive, the application needs to be in a keep-alive state at all times, so that when a vehicle is detected nearby, a Bluetooth connection can be initiated and security authentication can be performed. After the authentication is completed, the vehicle determines the distance based on the Bluetooth signal strength and decides whether to control the vehicle based on the distance.

[0042] However, due to the limitations of the mobile phone system, the application's ability to stay alive is limited. It is possible that a user stands next to a vehicle, but cannot initiate a connection because the application has been blocked by the system. Therefore, connection solutions based on application keep-alive are difficult to provide a stable user experience.

[0043] The Bluetooth Human Interface Device (HID) protocol defines the protocols, features, and usage procedures for Bluetooth in human interface devices. The Bluetooth HID protocol enables pairing and data transfer between Bluetooth devices. For example, once Bluetooth pairing is established between a vehicle and a mobile phone, a Bluetooth connection is automatically established when the phone is near the vehicle. Therefore, pairing solutions based on the Bluetooth protocol are more stable because they do not rely on application keepalive capabilities.

[0044] See Figure 2 , Figure 2 This is a schematic diagram of the location layout of multiple Bluetooth modules on a vehicle provided by an exemplary embodiment of this specification. Figure 2 As shown, when Figure 2When multiple Bluetooth modules in a vehicle use an application-keep-alive connection solution, Bluetooth module 1 can be set to slave mode, and Bluetooth modules 2-6 can be set to master mode. The vehicle's Bluetooth module 1 is responsible for connecting to the mobile app and performing security authentication. After security authentication is passed, the mobile app will set the phone's Bluetooth to slave mode and send a Bluetooth broadcast signal. The vehicle's Bluetooth modules 2-6 are responsible for receiving the phone's Bluetooth broadcast signal and calculating the phone's location based on the strength of the received broadcast signal. Furthermore, the vehicle can determine whether to unlock or lock the vehicle based on the calculated distance between the phone and the vehicle.

[0045] It is worth mentioning that Figure 2 The position layout of multiple Bluetooth modules on the vehicle is the more common "1+5" mode at this stage. In actual applications, the number and position of Bluetooth modules can be changed according to actual needs, and this application does not limit this.

[0046] As mentioned above, connection solutions based on application keepalives are limited by the application's keepalive capabilities, making it difficult to provide a stable user experience. Therefore, in order to break away from the reliance on application keepalives and improve the stability of the sensorless function, a solution based on Bluetooth protocol pairing can be adopted.

[0047] Continue to combine Figure 2 , the mobile phone can first be paired with the vehicle's Bluetooth module No. 1 based on the Bluetooth HID protocol. After the pairing is successful, the vehicle turns on the broadcast of Bluetooth modules No. 2 to No. 6, so that the mobile phone can be paired with the vehicle's Bluetooth modules No. 2 to No. 6 in sequence based on the Bluetooth HID protocol. After the mobile phone is successfully paired with all Bluetooth modules, the Bluetooth modules are in working mode. When the mobile phone is near the vehicle, it can automatically establish a Bluetooth connection with each Bluetooth module. The vehicle can receive the mobile phone's Bluetooth signal through each Bluetooth module and calculate the location of the mobile phone based on the strength of the Bluetooth signal. Furthermore, the vehicle can determine whether to perform the unlocking or locking operation based on the calculated distance between the mobile phone and the vehicle.

[0048] In view of this, this specification provides a technical solution based on a single Bluetooth module, but with multiple antennas added to the single Bluetooth module, and the antennas are distributed at different locations in the vehicle to receive Bluetooth signals from mobile Bluetooth devices, and calculate the distance and make judgments based on the strength of the received Bluetooth signal, thereby realizing high-precision and seamless entry into the vehicle based on single Bluetooth pairing.

[0049] During implementation, the vehicle can receive Bluetooth signals sent by the mobile Bluetooth device through multiple Bluetooth antennas distributed at different locations of the vehicle and connected to the Bluetooth chip, so as to establish a Bluetooth backlink with the mobile Bluetooth device;

[0050] For example, the vehicle can obtain the interval duration of the Bluetooth reconnection between the mobile Bluetooth device and the Bluetooth module, determine the switching period for the multiple Bluetooth antennas based on the interval duration, and periodically switch the multiple Bluetooth antennas to working mode in turn based on the switching period, and receive the Bluetooth signal sent by the mobile Bluetooth device through the Bluetooth antenna in the working mode to perform Bluetooth reconnection with the mobile Bluetooth device.

[0051] Then, in response to the successful Bluetooth backconnection with the mobile Bluetooth device, the distance between the mobile Bluetooth device and the vehicle can be calculated according to the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas;

[0052] For example, the distance between the mobile Bluetooth device and the vehicle may be calculated based on the signal strength of the Bluetooth signals received when the multiple Bluetooth antennas are in working mode respectively.

[0053] Then, it may be determined whether the distance reaches a threshold; if so, sensorless entry control is performed for the vehicle.

[0054] For example, when the distance is less than or equal to a distance threshold for unlocking the vehicle, the vehicle unlocking operation is performed; when the distance is greater than or equal to a distance threshold for locking the vehicle, the vehicle locking operation is performed.

[0055] In the above process, multiple Bluetooth antennas are expanded for a single Bluetooth chip, and the Bluetooth signals emitted by the mobile Bluetooth device are received through the multiple Bluetooth antennas. Furthermore, the distance between the mobile Bluetooth device and the vehicle can be calculated based on the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas, so that the vehicle can be controlled for seamless entry when the distance reaches a threshold. Through the above technical solution, on the one hand, the advantage of the simple and convenient pairing of a single Bluetooth chip can be utilized, avoiding the problem of multiple pairings of multiple Bluetooth chips affecting the user experience; on the other hand, multiple Bluetooth antennas can be used for multi-point positioning, thereby improving positioning accuracy and solving the problem of low positioning accuracy of traditional single Bluetooth chips; at the same time, there is no need to rely on the keep-alive capability of the mobile Bluetooth device, which improves the stability of the Bluetooth connection and enhances the user experience.

[0056] The following is a detailed description of the sensorless vehicle entry method of this specification with reference to the accompanying drawings.

[0057] See Figure 3 , Figure 3 This is a flow chart of a method for entering a vehicle without any sense of touch provided by an exemplary embodiment of this specification. Figure 3 As shown, the method is applied to a vehicle and includes the following execution steps:

[0058] Step 301: receiving a Bluetooth signal sent by a mobile Bluetooth device through the multiple Bluetooth antennas to establish a Bluetooth backconnection with the mobile Bluetooth device;

[0059] Step 302: In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0060] Step 303: Determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

[0061] The vehicle is equipped with a Bluetooth module, which includes a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different positions of the vehicle.

[0062] The above-mentioned mobile Bluetooth device can be a mobile Bluetooth device with a Bluetooth module such as a smart phone, wearable device, etc., or it can be a dedicated mobile Bluetooth device corresponding to the vehicle and used to control the vehicle. This manual does not limit this.

[0063] See Figure 4 , Figure 4 This is a schematic diagram of the position layout of a Bluetooth chip and a Bluetooth antenna on a vehicle provided by an exemplary embodiment of this specification, such as Figure 4 As shown, there are six different positions, No. 1 to No. 6, on the vehicle. When applying the above steps, the Bluetooth chip can be placed at position No. 1, and the multiple Bluetooth antennas connected to the Bluetooth chip can be arranged at positions No. 2 to No. 6 respectively.

[0064] In this embodiment, the Bluetooth signal sent by the mobile Bluetooth device can be received through the multiple Bluetooth antennas to perform Bluetooth backconnection with the mobile Bluetooth device;

[0065] For example, the vehicle can simultaneously receive the Bluetooth signal sent by the mobile Bluetooth device through the five Bluetooth antennas at positions 2 to 6, so as to perform a Bluetooth backconnection with the mobile Bluetooth device.

[0066] Since multiple Bluetooth antennas working simultaneously will increase power consumption, it can be set that only one Bluetooth antenna is in working mode at a time.

[0067] In one embodiment shown, the plurality of Bluetooth antennas include a Bluetooth antenna in working mode at the same time;

[0068] Furthermore, in response to successfully establishing a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module, the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module can be obtained; and, based on the interval duration, the switching period for the multiple Bluetooth antennas can be determined, and the multiple Bluetooth antennas can be periodically switched to working mode in turn based on the switching period, and the Bluetooth signal emitted by the mobile Bluetooth device can be received through the Bluetooth antenna in the working mode to perform Bluetooth backconnection with the mobile Bluetooth device.

[0069] It should be noted that, since this application adopts a connection solution based on Bluetooth pairing, the Bluetooth module and the mobile Bluetooth device need to be paired before establishing a Bluetooth connection between the Bluetooth module and the mobile Bluetooth device.

[0070] In one embodiment shown, a Bluetooth broadcast can be sent by a Bluetooth antenna in working mode among the multiple Bluetooth antennas, so that after receiving the Bluetooth broadcast, the mobile Bluetooth device initiates Bluetooth pairing with the Bluetooth module carried by the vehicle; and in response to the successful Bluetooth pairing, the Bluetooth connection is established with the mobile Bluetooth device.

[0071] In order to further reduce power consumption, when the Bluetooth module does not establish a Bluetooth connection with any Bluetooth device, the Bluetooth antenna may not be switched, and the designated Bluetooth antenna is responsible for receiving the Bluetooth signal.

[0072] In one embodiment shown, in response to the Bluetooth module not establishing a Bluetooth connection with any Bluetooth device, the designated Bluetooth antenna is switched to an operating mode.

[0073] The following is through Figure 4 Take the above process as an example. Figure 4 Among the multiple Bluetooth antennas at positions 2 to 6, only one of them can be in working mode at the same time.

[0074] Assume that when the Bluetooth module is not connected to any Bluetooth device, the Bluetooth antenna at position 2 can be set to working mode. Then, when the Bluetooth chip is not paired or connected to any Bluetooth device, only the Bluetooth antenna at position 2 is in working mode, and the Bluetooth chip sends Bluetooth broadcasts through the Bluetooth antenna at position 2.

[0075] It is understandable that when the mobile Bluetooth device is paired with the Bluetooth chip, the transmission data of the mobile Bluetooth device is also received based on the Bluetooth antenna at position 2.

[0076] In an illustrated embodiment, the duration of an interval for the mobile Bluetooth device to connect back to the vehicle via the Bluetooth connection may be obtained.

[0077] Continuing with the example, after pairing is completed, the vehicle successfully establishes a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module. The interval length of the Bluetooth backconnection with the vehicle transmitted by the mobile Bluetooth device through the Bluetooth connection can be obtained, that is, how often the mobile Bluetooth device and the Bluetooth module communicate with each other via Bluetooth.

[0078] In one embodiment shown, the interval duration is an integer multiple of the switching period.

[0079] Continuing with the example, assuming the interval duration is twice the switching period, when the interval duration is 50ms, the switching period for the multiple Bluetooth antennas at positions 2-6 can be determined to be 25ms based on the interval duration. Based on this switching period, the multiple Bluetooth antennas can be periodically switched to active mode, and Bluetooth signals transmitted by mobile Bluetooth devices can be received through the Bluetooth antennas in active mode.

[0080] In an example, assuming that initially, the Bluetooth antenna at position 2 is in working mode, the Bluetooth antenna at position 2 can start to connect back to the mobile Bluetooth device via Bluetooth, and the time of receiving the Bluetooth signal sent by the mobile Bluetooth device is set to 0; then at 25ms, the Bluetooth antenna at position 2 can stop working, and the Bluetooth antenna at position 3 can be switched to working mode; at 50ms, the Bluetooth antenna at position 3 can connect back to the mobile Bluetooth device via Bluetooth and receive the Bluetooth signal sent by the mobile Bluetooth device; then at 75ms, the Bluetooth antenna at position 3 can stop working, and the Bluetooth antenna at position 4 can be switched to working mode; and so on, until all Bluetooth antennas receive the Bluetooth signal sent by the mobile Bluetooth device once.

[0081] In the above process, it is not difficult to infer that it takes 50*5=250ms to reconnect the above five Bluetooth antennas once, so four rounds of receiving Bluetooth signals sent by mobile Bluetooth devices can be accumulated within 1 second.

[0082] It should be noted that when receiving Bluetooth signals sent by mobile Bluetooth devices through multiple Bluetooth antennas to connect to the mobile Bluetooth devices via Bluetooth, you can set the preset time as needed. The longer the time, the more times each Bluetooth antenna will connect back.

[0083] In addition, the arrangement of the Bluetooth antenna is not limited in this application, and those skilled in the art can arrange the Bluetooth antenna at different positions of the vehicle according to the principle of as even distribution as possible.

[0084] In this embodiment, in response to a successful Bluetooth backconnection with the mobile Bluetooth device, the distance between the mobile Bluetooth device and the vehicle may be calculated based on the signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas.

[0085] For example, in response to a successful Bluetooth backconnection with the mobile Bluetooth device, the distance between the mobile Bluetooth device and the vehicle may be calculated based on the signal strengths of Bluetooth signals received by multiple Bluetooth antennas at positions 2 to 6.

[0086] In an illustrated embodiment, the distance between the mobile Bluetooth device and the vehicle may be calculated based on the signal strength of the Bluetooth signals received when the multiple Bluetooth antennas are respectively in working mode.

[0087] For example, according to Figure 4 The signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas at positions 2 to 6 when they are in working mode are calculated, and the distances between the Bluetooth antennas at positions 2 to 6 and the mobile Bluetooth device are calculated.

[0088] In one embodiment shown, the distance between each Bluetooth antenna and the mobile Bluetooth device can be calculated based on the signal strength of the Bluetooth signal received by each Bluetooth antenna; and the distance between the mobile Bluetooth device and the vehicle can be calculated based on the distance between each Bluetooth antenna and the mobile Bluetooth device.

[0089] For example, the distances between the Bluetooth antennas at positions 2 to 6 and the mobile Bluetooth device can be calculated based on the signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas at positions 2 to 6. Furthermore, the distance between the mobile Bluetooth device and the vehicle can be calculated based on the distances between the Bluetooth antennas at positions 2 to 6 and the mobile Bluetooth device.

[0090] It is worth noting that the specific process of positioning calculation is not limited in this application, and those skilled in the art can perform positioning calculation according to actual needs.

[0091] In this embodiment, it may be determined whether the distance reaches a threshold; if so, sensorless entry control is performed for the vehicle.

[0092] The above-mentioned contactless entry control includes controlling the vehicle to be unlocked by the user holding the mobile terminal close to the vehicle; and controlling the vehicle to be locked by the user holding the mobile terminal away from the vehicle.

[0093] For example, by determining whether the calculated distance reaches a threshold, the vehicle unlocking operation can be performed when the distance is less than or equal to the distance threshold for vehicle unlocking; and the vehicle locking operation can be performed when the distance is greater than or equal to the distance threshold for vehicle locking.

[0094] By expanding a single Bluetooth chip with multiple Bluetooth antennas and using them to receive Bluetooth signals from mobile Bluetooth devices, the distance between the mobile Bluetooth device and the vehicle can be calculated based on the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas, thereby unlocking the vehicle when the distance reaches a threshold. Through the above technical solution, on the one hand, the advantage of the simple and convenient pairing of a single Bluetooth chip can be utilized, avoiding the problem of multiple pairings of multiple Bluetooth chips affecting the user experience; on the other hand, multiple Bluetooth antennas can be used for multi-point positioning, thereby improving positioning accuracy and solving the problem of low positioning accuracy of traditional single Bluetooth chips; at the same time, there is no need to rely on the keep-alive capability of the mobile Bluetooth device, which improves the stability of the Bluetooth connection and enhances the user experience.

[0095] See Figure 5 , Figure 5 This is a schematic structural diagram of a sensorless vehicle entry system provided by an exemplary embodiment of this specification. Figure 5 As shown, the sensorless entry system 500 includes: a vehicle Bluetooth module 501 and a vehicle control module 502.

[0096] The Bluetooth module includes a Bluetooth chip and a plurality of Bluetooth antennas connected to the Bluetooth chip and distributed at different locations of the vehicle.

[0097] The vehicle Bluetooth module 501 may be configured to receive Bluetooth signals sent by a mobile Bluetooth device through multiple Bluetooth antennas to perform a Bluetooth backconnection with the mobile Bluetooth device; and

[0098] In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0099] The vehicle control module 502 may be configured to determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

[0100] It should be noted that the specific details of the above-mentioned sensorless entry system have been described in detail in the previously described sensorless entry method process. Those skilled in the art can refer to the aforementioned relevant description and will not be repeated here.

[0101] In an exemplary embodiment of this specification, a device capable of implementing the above method is also provided.

[0102] Figure 6 This is a schematic structural diagram of an electronic device provided by an exemplary embodiment. Figure 6At the hardware level, the device includes a processor 602, an internal bus 604, a network interface 606, a memory 608, and a non-volatile memory 610. Of course, it may also include hardware required for other services. One or more embodiments of this specification can be implemented based on software, such as the processor 602 reading the corresponding computer program from the non-volatile memory 610 into the memory 608 and then running it. Of course, in addition to software implementation, one or more embodiments of this specification do not exclude other implementation methods, such as logic devices or a combination of software and hardware, etc., that is, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0103] Please refer to Figure 7 , Figure 7 : This is a block diagram of a sensorless vehicle entry device provided by an exemplary embodiment of this specification, which is applied to a vehicle. The device 700 includes:

[0104] The receiving module 701 receives the Bluetooth signal sent by the mobile Bluetooth device through the multiple Bluetooth antennas to perform Bluetooth backconnection with the mobile Bluetooth device;

[0105] a calculation module 702, in response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas;

[0106] The judgment module 703 determines whether the distance reaches a threshold; if so, performs sensorless entry control for the vehicle.

[0107] The vehicle is equipped with a Bluetooth module, which includes a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different positions of the vehicle.

[0108] In one embodiment, the plurality of Bluetooth antennas include a Bluetooth antenna in working mode at the same time;

[0109] The receiving module 701 further:

[0110] In response to successfully establishing a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module, obtaining an interval duration of a Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module;

[0111] Determine the switching period for the multiple Bluetooth antennas according to the interval duration, periodically switch the multiple Bluetooth antennas to the working mode in turn based on the switching period, and receive the Bluetooth signal emitted by the mobile Bluetooth device through the Bluetooth antenna in the working mode to perform Bluetooth backconnection with the mobile Bluetooth device.

[0112] In one embodiment, the calculation module 702 further:

[0113] The distance between the mobile Bluetooth device and the vehicle is calculated according to the signal strength of the Bluetooth signals received when the multiple Bluetooth antennas are respectively in the working mode.

[0114] In one embodiment, the apparatus 700 further includes:

[0115] The pairing module 704 (not shown in the figure) sends a Bluetooth broadcast through a Bluetooth antenna in working mode among the multiple Bluetooth antennas, so that the mobile Bluetooth device initiates Bluetooth pairing with the Bluetooth module on the vehicle after receiving the Bluetooth broadcast; and, in response to the successful Bluetooth pairing, establishes the Bluetooth connection with the mobile Bluetooth device.

[0116] In one embodiment, the receiving module 701 further:

[0117] Obtain the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the vehicle transmitted through the Bluetooth connection.

[0118] In one embodiment, the interval duration is an integer multiple of the switching period.

[0119] In one embodiment, the calculation module 702 further:

[0120] Calculating the distance between each Bluetooth antenna and the mobile Bluetooth device according to the signal strength of the Bluetooth signal received by each Bluetooth antenna;

[0121] The distance between the mobile Bluetooth device and the vehicle is calculated according to the distance between each Bluetooth antenna and the mobile Bluetooth device.

[0122] In one embodiment, the apparatus 700 further includes:

[0123] The switching module 705 (not shown in the figure) switches the designated Bluetooth antenna to the working mode in response to the Bluetooth module not establishing a Bluetooth connection with any Bluetooth device.

[0124] The implementation process of the functions and effects of each module in the above-mentioned device 700 is specifically detailed in the implementation process of the corresponding steps in the above-mentioned method. For relevant matters, please refer to the partial description of the method implementation method, which will not be repeated here.

[0125] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the units or modules may be selected according to actual needs to achieve the purpose of the scheme of this specification. Those of ordinary skill in the art can understand and implement the present invention without inventive effort.

[0126] The systems, devices, modules, or units described in the above embodiments may be implemented by computer chips or entities, or by products having certain functions. A typical implementation device is a computer, which may be in the form of a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email transceiver, game console, tablet computer, wearable device, or any combination of these devices.

[0127] In a typical configuration, a computer includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0128] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0129] Computer-readable media include permanent and non-permanent, removable and non-removable media that can be used to store information using any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, disk storage, quantum memory, graphene-based storage media or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0130] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0131] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0132] The terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of this specification. The singular forms "a," "an," "the," and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0133] It should be understood that although the terms first, second, third, etc. may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when..." or "when..." or "in response to determining."

[0134] The above description is merely a preferred embodiment of one or more embodiments of this specification and is not intended to limit one or more embodiments of this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included in the scope of protection of one or more embodiments of this specification.

Claims

1. A sensorless vehicle entry method, applied to a vehicle equipped with a Bluetooth module, the Bluetooth module comprising a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different locations within the vehicle, wherein one of the multiple Bluetooth antennas is in active mode at any given time. The method comprises: Receiving Bluetooth signals emitted by a mobile Bluetooth device through the multiple Bluetooth antennas to perform a Bluetooth backconnection with the mobile Bluetooth device; specifically comprising: receiving Bluetooth signals emitted by the mobile Bluetooth device through a Bluetooth antenna in working mode to perform a Bluetooth backconnection with the mobile Bluetooth device; wherein, in response to successfully establishing a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module, obtaining an interval duration for Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module; determining a switching period for the multiple Bluetooth antennas according to the interval duration, and periodically switching the multiple Bluetooth antennas to working mode in sequence based on the switching period; in response to the Bluetooth module not establishing a Bluetooth connection with any Bluetooth device, switching a designated Bluetooth antenna to working mode; In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas; Determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

2. The method according to claim 1, wherein calculating the distance between the mobile Bluetooth device and the vehicle based on the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas comprises: The distance between the mobile Bluetooth device and the vehicle is calculated according to the signal strength of the Bluetooth signals received when the multiple Bluetooth antennas are respectively in the working mode.

3. The method according to claim 1, before obtaining the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module, the method further comprises: Sending a Bluetooth broadcast through a Bluetooth antenna in working mode among the multiple Bluetooth antennas, so that the mobile Bluetooth device initiates Bluetooth pairing with the Bluetooth module carried by the vehicle after receiving the Bluetooth broadcast; In response to the Bluetooth pairing being successful, establishing the Bluetooth connection with the mobile Bluetooth device.

4. The method according to claim 1, wherein obtaining the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module comprises: Obtain the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the vehicle transmitted through the Bluetooth connection. The method according to claim 4 , wherein the interval duration is an integer multiple of the switching period.

6. The method according to claim 1, wherein calculating the distance between the mobile Bluetooth device and the vehicle based on the signal strength of the Bluetooth signals received by the multiple Bluetooth antennas comprises: Calculating the distance between each Bluetooth antenna and the mobile Bluetooth device according to the signal strength of the Bluetooth signal received by each Bluetooth antenna; The distance between the mobile Bluetooth device and the vehicle is calculated according to the distance between each Bluetooth antenna and the mobile Bluetooth device.

7. A sensorless entry device, applied to a vehicle, wherein the vehicle is equipped with a Bluetooth module, the Bluetooth module comprising a Bluetooth chip and multiple Bluetooth antennas connected to the Bluetooth chip and distributed at different locations within the vehicle, wherein one of the multiple Bluetooth antennas is in active mode at any given time; the device comprises: A receiving module, which receives the Bluetooth signal emitted by the mobile Bluetooth device through the multiple Bluetooth antennas to perform a Bluetooth backconnection with the mobile Bluetooth device; the receiving module is specifically used to: receive the Bluetooth signal emitted by the mobile Bluetooth device through the Bluetooth antenna in working mode to perform a Bluetooth backconnection with the mobile Bluetooth device; wherein, in response to successfully establishing a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module, obtaining the interval duration of the Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module; determining the switching period for the multiple Bluetooth antennas according to the interval duration, and periodically switching the multiple Bluetooth antennas to the working mode in sequence based on the switching period; in response to the Bluetooth module not establishing a Bluetooth connection with any Bluetooth device, switching the designated Bluetooth antenna to the working mode; a calculation module, in response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas; The judgment module determines whether the distance reaches a threshold; if so, performs sensorless entry control for the vehicle.

8. A sensorless vehicle entry system, comprising: Vehicle Bluetooth module, Receive Bluetooth signals sent by a mobile Bluetooth device through multiple Bluetooth antennas to establish a Bluetooth backconnection with the mobile Bluetooth device; The multiple Bluetooth antennas include a Bluetooth antenna in working mode at the same time; the Bluetooth signal emitted by the mobile Bluetooth device is received by the Bluetooth antenna in working mode to perform a Bluetooth backconnection with the mobile Bluetooth device; wherein, in response to successfully establishing a Bluetooth connection with the mobile Bluetooth device through the Bluetooth module, an interval duration of Bluetooth backconnection between the mobile Bluetooth device and the Bluetooth module is obtained; a switching period for the multiple Bluetooth antennas is determined according to the interval duration, and the multiple Bluetooth antennas are periodically switched to working mode in sequence based on the switching period; in response to the Bluetooth module not establishing a Bluetooth connection with any Bluetooth device, a designated Bluetooth antenna is switched to working mode; and, In response to a successful Bluetooth backconnection with the mobile Bluetooth device, calculating a distance between the mobile Bluetooth device and the vehicle based on signal strengths of the Bluetooth signals received by the multiple Bluetooth antennas; The Bluetooth module includes a Bluetooth chip and a plurality of Bluetooth antennas connected to the Bluetooth chip and distributed at different locations of the vehicle; Vehicle Control Module, Determine whether the distance reaches a threshold; if so, perform sensorless entry control for the vehicle.

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