Transportation mode exit method and device of automobile intelligent key and storage medium

Abstract

The invention relates to a transportation mode exit method and device of an automobile intelligent key and a storage medium, and the method comprises the steps: responding to a received diagnosis instruction for exiting a transportation mode, and starting a Bluetooth broadcast receiving and transmitting function; in response to the searched Bluetooth broadcast signal sent by the automobile intelligent key, establishing Bluetooth connection with the automobile intelligent key; and a transportation mode exit instruction is sent to the automobile intelligent key through the Bluetooth connection, so that the automobile intelligent key exits the transportation mode in response to the transportation mode exit instruction. By the adoption of the technical scheme, the situation that the intelligent key exits from the transportation mode due to the fact that a key button is mistakenly touched in the vehicle transportation process or bumping in the transportation process is avoided, it is guaranteed that the automobile intelligent key is continuously in the transportation mode in the transportation process, and the reliability and safety of the transportation mode are improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle control technology, and in particular to a method, device and storage medium for exiting a transport mode of a vehicle smart key. Background Art

[0002] Usually, it takes anywhere from 7 days to 3 months for a commercial vehicle to be shipped from the factory to 4S sales outlets across the country, or even to many overseas regions. In order to reduce the power consumption of the vehicle's smart key during transportation, the vehicle's smart key is usually set to transportation mode before the commercial vehicle is shipped.

[0003] However, in the prior art, after the vehicle's smart key enters the transport mode for a certain period of time (e.g., 3 minutes), if any button of the smart key is pressed or the smart key is shaken, the smart key exits the transport mode and can be paired with the vehicle via Bluetooth. This method of exiting the transport mode of the smart key is prone to the situation where the smart key exits the transport mode due to accidental pressing of the smart key button or bumps during transportation, thereby causing abnormal power consumption of the smart key during long-distance transportation of the vehicle. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, at least one embodiment of the present disclosure provides a method, device and storage medium for exiting the transport mode of a car smart key.

[0005] In a first aspect, the present disclosure provides a method for exiting a transport mode of a vehicle smart key, which is applied to a vehicle and includes:

[0006] In response to receiving a diagnostic instruction to exit the shipping mode, activating a Bluetooth broadcast transceiver function;

[0007] In response to searching for a Bluetooth broadcast signal sent by a car smart key, establishing a Bluetooth connection with the car smart key;

[0008] A transport mode exit instruction is sent to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

[0009] In a second aspect, the present disclosure provides a method for exiting a transport mode of a vehicle smart key, which is applied to the vehicle smart key and includes:

[0010] In response to receiving a user's pressing operation on a target button on the automobile smart key, sending a Bluetooth broadcast signal according to a preset period, so that the vehicle can establish a Bluetooth connection with the automobile smart key after searching for the Bluetooth broadcast signal;

[0011] In response to receiving a transport mode exit command sent by the vehicle via the Bluetooth connection, exiting the transport mode.

[0012] In a third aspect, the present disclosure provides a transport mode exit device for a vehicle smart key, which is applied to a vehicle and includes:

[0013] A start module, configured to start a Bluetooth broadcast transceiver function in response to receiving a diagnostic instruction to exit the transport mode;

[0014] A connection establishing module, configured to establish a Bluetooth connection with the automobile smart key in response to searching for a Bluetooth broadcast signal sent by the automobile smart key;

[0015] The instruction sending module is used to send a transport mode exit instruction to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

[0016] In a fourth aspect, the present disclosure provides a transport mode exit device for a vehicle smart key, which is applied to the vehicle smart key and includes:

[0017] A broadcast sending module, configured to send a Bluetooth broadcast signal according to a preset period in response to receiving a user's pressing operation on a target button on the automobile smart key, so that the vehicle can establish a Bluetooth connection with the automobile smart key after searching for the Bluetooth broadcast signal;

[0018] The exit module is used to exit the transport mode in response to receiving a transport mode exit instruction sent by the vehicle through the Bluetooth connection.

[0019] In a fifth aspect, the present disclosure provides a vehicle, comprising: a processor and a memory;

[0020] The processor is used to execute any of the methods for exiting the transport mode of the automobile smart key provided in the embodiments of the present disclosure by calling the program or instruction stored in the memory.

[0021] In a sixth aspect, the present disclosure provides a vehicle smart key, including: a processor and a memory;

[0022] The processor is used to execute any of the methods for exiting the transport mode of the automobile smart key provided in the embodiments of the present disclosure by calling the program or instruction stored in the memory.

[0023] In a seventh aspect, the present disclosure provides a computer-readable storage medium, which stores a program or instruction, and the program or instruction enables a computer to execute any of the methods for exiting the transport mode of a car smart key provided in the embodiments of the present disclosure.

[0024] In an eighth aspect, the present disclosure provides a computer program product, which is used to execute any of the methods for exiting the transport mode of a car smart key provided in the embodiments of the present disclosure.

[0025] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has at least the following advantages:

[0026] In the disclosed embodiment, the vehicle starts the Bluetooth broadcast transceiver function in response to receiving the diagnostic instruction to exit the transport mode, establishes a Bluetooth connection with the vehicle smart key in response to searching for the Bluetooth broadcast signal sent by the vehicle smart key, and then sends the transport mode exit instruction to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction. With the above technical solution, only when the vehicle receives the diagnostic instruction to exit the transport mode, the vehicle starts the Bluetooth broadcast transceiver function to search for the Bluetooth broadcast signal, and only when the Bluetooth broadcast signal of the vehicle smart key is searched, does the vehicle establish a Bluetooth connection with the vehicle smart key and send the transport mode exit instruction to the vehicle smart key, and the vehicle smart key will exit the transport mode when it receives the transport mode exit instruction, thereby avoiding the situation where the smart key exits the transport mode due to accidental touching of the key button or bumps during transportation, ensuring that the vehicle smart key is continuously in the transport mode during transportation, improving the reliability and safety of the transport mode, and avoiding the problem of abnormal power consumption of the vehicle smart key during transportation, saving the power of the vehicle smart key. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] In order to more clearly illustrate the embodiments of the present invention 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 It is a schematic diagram of the overall system communication framework of an exemplary embodiment of the present disclosure;

[0030] Figure 2 A schematic diagram of a smart car key and a vehicle entering a transport mode according to an exemplary embodiment of the present disclosure;

[0031] Figure 3 A schematic diagram of a flow chart of a method for exiting a transport mode of a smart key for a vehicle provided by an exemplary embodiment of the present disclosure;

[0032] Figure 4 A schematic flow chart of a method for exiting a transport mode of a smart key for a vehicle provided by another exemplary embodiment of the present disclosure;

[0033] Figure 5 A schematic diagram showing information interaction between the vehicle end and the vehicle smart key when exiting the transport mode is shown;

[0034] FIG6( a ) is a schematic diagram of power consumption of a smart car key before a vehicle is shipped and after it arrives at a store using the prior art;

[0035] FIG6( b ) is a schematic diagram of the power consumption of the smart key of the car before the vehicle is shipped and after it arrives at the store using this solution;

[0036] Figure 7 A schematic diagram of the structure of a transport mode exit device for a smart car key provided by an embodiment of the present disclosure;

[0037] Figure 8 A schematic structural diagram of a transport mode exit device for a smart key for a car provided in another embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understandable that the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments, and the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure. In the absence of conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in the field belong to the scope of protection of the present disclosure.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0040] Before explaining the specific implementation of the present disclosure, the Chinese and English terms that may be involved in the present disclosure are explained as follows:

[0041] Bluetooth communication main module: The electronic controller on the vehicle side is responsible for communicating with external Bluetooth devices, including the Microcontroller Unit (MCU) module and the Bluetooth Low Energy (BLE) Bluetooth communication module;

[0042] UWB smart key: Ultra-Wideband (UWB) smart key terminal;

[0043] VCATS system: Vehicle and Configuration Test Solutions, vehicle configuration, diagnosis and testing system;

[0044] MCU module: A microcomputer chip that integrates a processor, memory, and input / output interfaces;

[0045] ADV_IND type broadcast: connectable non-directional broadcast, one of the three types of broadcast packets that a broadcaster can use to broadcast data to observers.

[0046] Car keys have evolved from using mechanical keys and lock cylinders to open car doors and start engines, to remote control keys and sensorless PEPS keys, and now have entered a new generation of digital keys that are safer, more convenient, and more personalized. Mobile phone private Bluetooth keys allow people to break free from the constraints of physical keys, but because Bluetooth signals are greatly affected by the environment, their poor experience cannot be ignored by car owners. In order to meet market demand, UWB smart physical keys came into being. UWB technology is a short-range, high-speed wireless communication technology with the advantages of high bandwidth, low power consumption, and high-precision positioning. Compared with other communication technologies, UWB has obvious advantages in positioning and can bring users a stable user experience.

[0047] UWB technology achieves precise positioning, but its power consumption is high. The UWB smart key and the vehicle can establish BLE LL layer (BLE link layer) connection authentication at a distance of 30M to 40M in an open scene, and turn on UWB ranging for 30 seconds.

[0048] It can be seen that there are two types of power consumption when using UWB smart keys, as follows:

[0049] Bluetooth pairing power consumption: Each time a BLE LL layer pairing is established, the SE security chip in the UWB smart key needs to be reactivated. The average power consumption of the SE chip to complete the pairing is 2150μA through the precision power consumption meter test, and the average pairing time is about 3.02 seconds (s). The power consumption required for a Bluetooth pairing is: 2150μA*3.02s / 3600 / 1000=0.0018mAh;

[0050] UWB ranging power consumption required for pairing: After pairing is completed, UWB must be activated to continuously measure distance for 30 seconds, with a ranging cycle of 96ms. The average power consumption is 6350μA as tested by a precision power consumption meter. The UWB ranging power consumption required by the UWB smart key is: 6350μA*30 / 3600 / 1000=0.053mAh.

[0051] Therefore, the power consumption required for pairing the UWB smart key with the vehicle's Bluetooth connection is about 0.055 mAh. It can be seen that pairing the UWB smart key with the vehicle's Bluetooth connection once consumes a lot of power.

[0052] In actual applications, it usually takes at least 7 days to 3 months for commodity vehicles to be shipped from the factory to 4S sales outlets across the country, and even to many overseas regions. During the transportation of commodity vehicles, the vehicle is generally locked, and the UWB smart key is centrally managed and stored. Due to the limited transportation space and complex surrounding environment, the location where the UWB smart key is stored will be in the critical area for Bluetooth connection and pairing with the vehicle, resulting in frequent Bluetooth connections between the UWB smart key and the vehicle, and the repeated Bluetooth disconnection or continuous Bluetooth connection will inevitably lead to unnecessary consumption of the battery power of the UWB smart key during transportation. From the above power consumption analysis, it can be seen that a Bluetooth connection pairing will consume about 0.055mAh of power, and frequent Bluetooth connections will inevitably lead to greater power consumption, so that after the user picks up the new car, the battery power of the UWB smart key will not last long and will be depleted, resulting in the inability to unlock the vehicle or start the vehicle, resulting in a large number of serious market customer complaints and market claims, which not only brings a bad experience to users, but also has a great negative impact on the brand. Therefore, the ineffective power consumption of smart keys in long-distance transportation has become the most urgent problem to be solved.

[0053] In order to solve the problem of abnormal power consumption of the physical UWB smart key during long-distance transportation of the vehicle, the best solution is to ensure that the UWB smart key does not work during transportation, and then turn it on after arriving at the destination. At present, in the relevant technology, the solution adopted is to arrange 4-5 people to press the buttons of the UWB smart key to put it into transportation mode before the commodity vehicle is shipped, in the hope that the UWB smart key will not work during transportation. Specifically, when the UWB smart key is ready to enter the transportation mode, manually press and hold the tailgate button + lock button for 8 seconds to 12 seconds to enter the transportation mode. Moreover, within 3 minutes after the UWB smart key enters the transport mode, pressing any button on the UWB smart key or shaking the UWB smart key will not trigger the UWB smart key to send the ADV_IND type Bluetooth broadcast signal, and the UWB smart key will not exit the transport mode; but 3 minutes after entering the transport mode, pressing any button on the UWB smart key or shaking the UWB smart key will cause the UWB smart key to exit the transport mode and trigger the UWB smart key to send the ADV_IND type Bluetooth broadcast signal. At this time, the UWB smart key can be connected and paired with the vehicle through Bluetooth.

[0054] It can be seen that the existing solution has the following defects:

[0055] (1) Difficulty in implementation: Each vehicle’s UWB smart key needs to be manually pressed for a long time to enter transport mode;

[0056] (2) High time economic cost: Human resources need to be specially arranged to do related work;

[0057] (3) High instability: It is easy to accidentally touch the buttons of the UWB smart key or shake the UWB smart key to make it exit the transportation mode, resulting in abnormal power consumption of the UWB smart key during long-distance transportation.

[0058] In order to solve the problem of abnormal power consumption of physical UWB smart keys during long-distance transportation of real vehicles, the present disclosure provides a transportation mode exit scheme for automobile smart keys. This scheme is implemented by relying on the control of factory production line diagnostic instructions. After the UWB smart key completes learning on the production line, it enters or exits the transportation mode by sending a diagnostic instruction to the whole vehicle end (i.e., the vehicle). The body controller transmits the diagnostic instruction to the vehicle's Bluetooth communication main module through the controller area network (Controller Area Network, CAN) bus or the private local interconnect network (Local Interconnect Network, LIN) bus. When the Bluetooth communication main module receives the instruction, it converts it into a Bluetooth signal and sends it to the UWB smart key through the Bluetooth connection established with the UWB smart key. In this way, the Bluetooth communication main module and the UWB smart key both receive the same instruction request and complete the mode state switching work. This scheme combines the diagnostic instruction to make the vehicle and the UWB smart key exit the transportation mode, which can ensure the safety and stability of the UWB smart key during transportation, and ultimately effectively extend the service life of the UWB smart key battery.

[0059] The specific implementation methods, devices and storage media for exiting the transport mode of a smart car key disclosed in the present invention are explained in detail below with reference to the accompanying drawings.

[0060] The overall system communication framework diagram of the embodiment of the present disclosure is as follows Figure 1 As shown, it includes a car smart key (i.e., a UWB smart key), a vehicle and a VCATS system, wherein the vehicle includes a body controller, a Bluetooth communication main module and several nodes, the VCATS system sends a diagnostic instruction to the body controller to enter or exit the transport mode, the body controller includes a communication module, which is used to communicate with the Bluetooth communication main module through a CAN bus or a LIN bus, the Bluetooth communication main module includes an MCU module and a BLE Bluetooth communication module, the BLE Bluetooth communication module establishes a BLE Bluetooth communication connection with the BLE Bluetooth communication module of the UWB smart key, the BLE Bluetooth communication module also includes a UWB communication module and a 3D acceleration sensor, the 3D acceleration sensor is used to detect whether the UWB smart key is shaking, and the UWB communication module is used to realize UWB ranging.

[0061] Based on the above communication framework, in the embodiment of the present disclosure, the processing logic of the vehicle's Bluetooth communication main module and the UWB smart key entering the transport mode is as follows:

[0062] After the factory production line completes the binding learning of the UWB smart key and the corresponding vehicle-side Bluetooth communication main module, a one-to-one correspondence is established between the smart key and the corresponding vehicle. Only the smart key and vehicle with a binding relationship can establish a Bluetooth connection for communication. After manually inputting the diagnostic instruction of "entering transport mode" to the whole vehicle through the VCATS system, the body controller sends the diagnostic instruction to the MCU module in the Bluetooth communication main module through the CAN bus or LIN bus. After receiving the diagnostic instruction of "entering transport mode", the MCU module determines whether there is a car smart key connected to its Bluetooth. When a legal UWB key is connected to its Bluetooth, the diagnostic instruction is converted into Bluetooth air interface data using the near field communication characteristics of Bluetooth and carries the vehicle status (such as the current timestamp, the vehicle's identity) to synchronously respond to the UWB smart key. The UWB smart key determines whether the received Bluetooth air interface data comes from the bound vehicle according to the vehicle's identity, and determines whether the Bluetooth air interface data is later than the last received data according to the current timestamp. If both are satisfied, the instruction is judged to be valid, and then enters the transport mode, and sends a positive response message to the vehicle-side Bluetooth communication main module to inform the vehicle-side Bluetooth communication main module that it has entered the transport mode, and then the vehicle will enter the transport mode. In this way, it is safer and more reliable to control the vehicle and smart key to enter the transport mode, and avoids the risk of human damage to the UWB smart key product.

[0063] Before the vehicle and the car smart key enter the transport mode, the BLE chip in the vehicle-side Bluetooth communication main module scans the surrounding Bluetooth broadcasts every 20ms, while the BLE chip in the UWB smart key sends ADV_IND type Bluetooth broadcasts every 200ms. Figure 2As shown, the BLE Bluetooth communication module provides multiple services including Bluetooth pairing, RSSI strength signal, broadcast management, APP&BLE communication, scanning management and serial communication. When the vehicle-side Bluetooth communication main module receives the positive response message of the UWB smart key feedback command to enter the transport mode, it also enters the transport mode. First, the BLE LL connection communication is disconnected, and the broadcast management service is controlled to stop scanning the broadcast service and stop sending the broadcast service. That is to say, in the transport mode state, the vehicle-side Bluetooth communication main module will not establish Bluetooth communication with any external device. At the same time, the UWB smart key also disconnects the BLE LL layer connection communication after entering the transport mode, and selectively suspends the broadcast sending service. Among them, when any physical button is pressed, the Bluetooth broadcast can be sent according to a cycle of 200ms and continuously sent for 30 seconds. If no Bluetooth connection pairing is established with any device after 30 seconds, it will continue to remain dormant, but will not exit the transport mode; and when the UWB smart key is shaken to wake up, the broadcast will not be sent after the motion sensor signal is detected. This design can avoid the unnecessary power loss caused by the continuous broadcast of the UWB smart key caused by the bumpy shaking during transportation. Through the above-mentioned method of entering the transport mode, automatic entry into the transport mode is achieved, and the Bluetooth communication main module and UWB smart key on the vehicle side both enter the transport mode, which is safer and more reliable.

[0064] Compared with the existing solutions for entering the transport mode, the transport mode entry solution disclosed in the present invention enters the transport mode through diagnostic instructions, freeing up human resources. There is no need to spend time pressing buttons on the smart keys of each vehicle. It is more reliable and efficient than manually pressing buttons on the smart keys of each vehicle. In addition, the Bluetooth communication main module on the vehicle side also enters the transport mode after receiving the diagnostic instructions to enter the transport mode, which once again ensures that a Bluetooth connection pairing relationship will not be established with the UWB smart key during transportation, further improving reliability.

[0065] Corresponding to entering the transport mode through diagnostic commands, the car smart key also needs a diagnostic command to give a signal to exit the transport mode when exiting the transport mode, so as to avoid exiting the transport mode due to accidental button touching or shaking of the smart key during transportation, thereby improving the safety and reliability of the transport mode.

[0066] Figure 3 A flowchart of a method for exiting the transport mode of a car smart key provided for an exemplary embodiment of the present disclosure is provided. The method can be executed by a device for exiting the transport mode of a car smart key provided for an embodiment of the present disclosure. The device for exiting the transport mode of a car smart key can be implemented using software and / or hardware and can be integrated in a vehicle.

[0067] like Figure 3 As shown, the method for exiting the transport mode of the automobile smart key may include the following steps:

[0068] Step 101 , in response to receiving a diagnostic instruction to exit a shipping mode, starting a Bluetooth broadcast transceiver function.

[0069] Exemplarily, the diagnostic instruction for exiting the transport mode may be sent manually through the VCATS system. For example, when the vehicle arrives at the destination, the diagnostic instruction for exiting the transport mode may be sent manually through the VCATS system.

[0070] In the disclosed embodiment, after the vehicle receives the diagnostic instruction to exit the transport mode, in response to the diagnostic instruction, the vehicle activates the Bluetooth broadcast transceiver function to send and receive Bluetooth broadcast signals.

[0071] As an example, the vehicle's body controller can be configured to receive diagnostic instructions, and the body controller can be configured to control the sleep and working states of the Bluetooth communication main module. When the body controller receives a diagnostic instruction to exit the transport mode, the Bluetooth communication main module can be controlled to switch from the sleep state to the working state. The Bluetooth communication main module that enters the working state activates the Bluetooth broadcast receiving and sending function.

[0072] As another example, the vehicle's body controller can be configured to receive diagnostic instructions. When the body controller receives the diagnostic instruction to exit the transport mode, it generates a broadcast function recovery request and wakes up the Bluetooth communication main module on the vehicle side. The broadcast function recovery request is sent to the Bluetooth communication main module through the vehicle's internal bus (CAN bus or LIN bus). The Bluetooth communication main module starts the Bluetooth broadcast transceiver function in response to the broadcast function recovery request, and resumes scanning and discovering Bluetooth broadcast services and sending Bluetooth broadcast services in the broadcast management service.

[0073] Step 102: in response to searching for a Bluetooth broadcast signal sent by a car smart key, establishing a Bluetooth connection with the car smart key.

[0074] In the disclosed embodiment, after the vehicle side starts the Bluetooth broadcast transceiver function, it can search for the surrounding Bluetooth broadcast signals. If the Bluetooth broadcast signal sent by the car smart key is found, a Bluetooth connection is established with the car smart key.

[0075] As an example, after the vehicle searches for the Bluetooth broadcast signal sent by the car smart key, it can directly establish a Bluetooth connection with the corresponding car smart key.

[0076] As another example, after the vehicle searches for the Bluetooth broadcast signal sent by the car smart key, it can first obtain the key identification of the car smart key carried in the Bluetooth broadcast signal, and judge whether the identity of the car smart key is legal based on the key identification. For example, it can query whether the locally pre-stored car smart key identification is consistent with the obtained key identification. If they are consistent, it is determined that the corresponding car smart key is legal; then, when it is determined that the identity of the car smart key is legal, a Bluetooth connection is established with the car smart key, thereby ensuring the accuracy of the Bluetooth connection.

[0077] Step 103: sending a transport mode exit instruction to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

[0078] In the disclosed embodiment, after the vehicle establishes a Bluetooth connection with the car smart key, a transport mode exit instruction can be sent to the car smart key through the established Bluetooth connection. After the car smart key receives the transport mode exit instruction sent by the vehicle, it responds to the transport mode exit instruction and exits the transport mode. After exiting the transport mode, the car smart key starts to send Bluetooth broadcasts normally at a preset period (for example, one period is 200 ms).

[0079] In the method for exiting the transport mode of the automobile smart key of the embodiment of the present disclosure, the vehicle starts the Bluetooth broadcast transceiver function in response to receiving the diagnostic instruction for exiting the transport mode, establishes a Bluetooth connection with the automobile smart key in response to searching for the Bluetooth broadcast signal sent by the automobile smart key, and then sends the transport mode exit instruction to the automobile smart key through the Bluetooth connection, so that the automobile smart key exits the transport mode in response to the transport mode exit instruction. With the above technical solution, only when the vehicle receives the diagnostic instruction for exiting the transport mode, the vehicle starts the Bluetooth broadcast transceiver function to search for the Bluetooth broadcast signal, and only when the Bluetooth broadcast signal of the automobile smart key is searched, does the vehicle establish a Bluetooth connection with the automobile smart key and send the transport mode exit instruction to the automobile smart key, and the automobile smart key will exit the transport mode only when it receives the transport mode exit instruction, thereby avoiding the situation that the smart key exits the transport mode due to accidental touching of the key button or bumps during transportation, ensuring that the automobile smart key is continuously in the transport mode during transportation, improving the reliability and safety of the transport mode, and avoiding the problem of abnormal power consumption of the automobile smart key during transportation, saving the power of the automobile smart key.

[0080] In an optional implementation of the present disclosure, after a Bluetooth connection is established between the vehicle and the smart car key, a transport mode exit instruction can be generated, and the transport mode exit instruction is encrypted based on a preset encryption key to generate an instruction ciphertext, and then the instruction ciphertext is sent to the smart car key via the Bluetooth connection. After receiving the instruction ciphertext, the smart car key decrypts the instruction ciphertext using a preset decryption key to obtain the transport mode exit instruction, and then exits the transport mode in response to the transport mode exit instruction.

[0081] Among them, the encryption key and the decryption key constitute a key pair, and the two can be the same or different. When a symmetric encryption algorithm is used for encryption and decryption, the encryption key and the decryption key are the same; when an asymmetric encryption algorithm is used for encryption and decryption, the encryption key and the decryption key are different.

[0082] Further, in an optional implementation of the present disclosure, when generating a transport mode exit instruction, the vehicle's identity and current timestamp can be obtained, wherein the vehicle's identity uniquely identifies the vehicle, and the current timestamp refers to the vehicle's current system time, that is, the time when the information is obtained to generate the transport mode exit instruction; then, the transport mode exit instruction is generated based on the identity and the current timestamp, wherein the transport mode exit instruction carries the identity and the current timestamp, and then the instruction ciphertext is generated after encryption and sent to the car smart key. After the car smart key receives the instruction ciphertext, it first decrypts to obtain the transport mode exit instruction, then obtains the vehicle's identity and timestamp carried in the transport mode exit instruction, determines whether the source of the instruction is a legal vehicle bound to it according to the vehicle's identity, and determines whether the time of the instruction is later than the time of the previous instruction according to the timestamp. When both are satisfied, it is determined that the instruction is valid, and then the transport mode is exited, and a positive response message is fed back to the vehicle. The validity of the instruction is judged by the vehicle's identity and timestamp, which ensures the security and reliability of the scheme for exiting the transport mode.

[0083] Figure 4 A flowchart of a method for exiting the transport mode of a car smart key provided for another exemplary embodiment of the present disclosure is provided. The method can be executed by a device for exiting the transport mode of a car smart key provided in an embodiment of the present disclosure. The device for exiting the transport mode of a car smart key can be implemented using software and / or hardware and can be integrated into a car smart key, such as a UWB smart key.

[0084] like Figure 4 As shown, the method for exiting the transport mode of the automobile smart key may include the following steps:

[0085] Step 201, in response to receiving a user's pressing operation on a target button on the car smart key, sending a Bluetooth broadcast signal according to a preset period, so that the vehicle establishes a Bluetooth connection with the car smart key after searching for the Bluetooth broadcast signal.

[0086] Among them, the target button can be a designated button on the car smart key. For example, the lock button on the car smart key is pre-designated as the target button. When the car smart key is in transport mode, when the user presses the lock button, the car smart key sends a Bluetooth broadcast signal according to a preset period (for example, 200ms). When the user presses other buttons on the car smart key, the car smart key does not respond to the user's pressing operation and does not send a Bluetooth broadcast signal; or, the target button can also be any button on the car smart key. When the car smart key is in transport mode, when the user presses any button on the car smart key, the car smart key sends a Bluetooth broadcast signal according to a preset period (for example, 200ms).

[0087] In this embodiment, when the vehicle receives a diagnostic instruction to exit the transport mode, it will start the Bluetooth broadcast transceiver function to search and send the Bluetooth broadcast signal. After the vehicle starts the broadcast transceiver function, it will scan the surrounding Bluetooth broadcasts according to a preset period (for example, 20ms). If the car smart key sends a Bluetooth broadcast signal according to the preset period, the vehicle will search for the Bluetooth broadcast signal sent by the car smart key, and then the vehicle will establish a Bluetooth connection with the car smart key that sends the Bluetooth broadcast signal, and send a transport mode exit instruction to the car smart key through the Bluetooth connection.

[0088] Step 202 : exiting the transport mode in response to receiving a transport mode exit instruction sent by the vehicle via the Bluetooth connection.

[0089] In the disclosed embodiment, after the automobile smart key receives the transport mode exit instruction sent by the vehicle via the Bluetooth connection, it can exit the transport mode, thereby resuming the normal sending of the Bluetooth broadcast.

[0090] The method for exiting the transport mode of the automobile smart key of the embodiment of the present disclosure is that the automobile smart key responds to receiving the user's pressing operation on the target button on the automobile smart key, sends a Bluetooth broadcast signal according to a preset period, so that the vehicle establishes a Bluetooth connection with the automobile smart key after searching for the Bluetooth broadcast signal, and responds to receiving the transportation mode exit instruction sent by the vehicle through the Bluetooth connection to exit the transportation mode. With the scheme of the present disclosure, the automobile smart key sends a Bluetooth broadcast signal by the user pressing the button on the automobile smart key. The vehicle establishes a Bluetooth connection with the automobile smart key and sends the transportation mode exit instruction to the automobile smart key only when it searches for the Bluetooth broadcast signal of the automobile smart key. The automobile smart key will exit the transportation mode only when it receives the transportation mode exit instruction, thereby avoiding the situation that the smart key exits the transportation mode due to accidental touching of the key button or bumps during transportation during the transportation of the vehicle, ensuring that the automobile smart key is continuously in the transportation mode during the transportation, improving the reliability and safety of the transportation mode, and avoiding the problem of abnormal power consumption of the automobile smart key during transportation, saving the power of the automobile smart key.

[0091] In an optional implementation of the present disclosure, the transport mode exit instruction sent by the vehicle to the car smart key carries the vehicle's identity and timestamp, and the timestamp is used to indicate the generation time of the transport mode exit instruction. Therefore, after the car smart key receives the transport mode exit instruction sent by the vehicle via Bluetooth connection, it can first obtain the identity and timestamp carried by the transport mode exit instruction, and compare the obtained identity with the pre-stored vehicle identity of the bound vehicle, and compare the obtained timestamp with the timestamp carried by the previous instruction received. When the obtained identity is consistent with the pre-stored vehicle identity, and the obtained timestamp is later than the timestamp carried by the previous instruction, exit the transport mode. In this way, the validity verification of the instruction is realized, and only valid instructions will respond to exit the transport mode, ensuring the safety and reliability of the transport mode.

[0092] In an optional embodiment of the present disclosure, after the automobile smart key sends the Bluetooth broadcast signal according to a preset period, it can start timing and monitor whether there is a device that establishes a Bluetooth connection with the automobile smart key within the preset time. If it is monitored that the automobile smart key does not establish a Bluetooth connection with any device within the preset time, it stops sending the Bluetooth broadcast signal and maintains the transportation mode. As a result, even if the button of the automobile smart key is accidentally touched during the transportation of the vehicle, since the vehicle end does not receive the diagnostic instruction to exit the transportation mode to start the Bluetooth broadcast transceiver function to search for the Bluetooth broadcast signal, the Bluetooth connection will not be established between the vehicle and the automobile smart key, ensuring that the smart key will not exit the transportation mode due to accidental touch during transportation, thereby avoiding abnormal consumption of the power of the automobile smart key during transportation.

[0093] Figure 5 The diagram shows the information interaction between the vehicle end and the car smart key when exiting the transport mode. After the vehicle receives the diagnostic instruction to exit the transport mode sent by the VCATS system, the body controller wakes up the Bluetooth communication main module through the internal CAN / LIN bus and sends an "exit transport mode" request instruction. After receiving the "exit transport mode" request instruction, the Bluetooth communication main module resumes scanning and discovering broadcast services and sending broadcast services in the broadcast management. After that, the BLE chip in the Bluetooth communication main module begins to scan the surrounding Bluetooth broadcasts normally at a cycle of every 20ms. Figure 5 As shown, the UWB smart key needs to manually press any button on the key to send a Bluetooth broadcast signal of the ADV_IND type with a period of 200ms and last for 30 seconds. During this process, the Bluetooth antenna in the main module of the Bluetooth communication on the vehicle side scans the broadcast sent by the UWB smart key and initiates the BLE LL layer connection and pairing, and finally establishes Bluetooth near-field communication. However, the UWB smart key has not yet exited the transport mode. The MCU module in the main module of the Bluetooth communication on the vehicle side synchronizes the status signal of the body controller (such as the vehicle's identity and current timestamp) for the first time, generates a transport mode exit instruction based on the status signal, and performs encryption operation according to the agreed password to obtain the instruction ciphertext, and sends the instruction ciphertext of "exit transport mode" to the UWB smart key. After the UWB smart key decrypts the received instruction ciphertext, it obtains the identity and timestamp to verify the validity of the instruction. After the verification is passed, the normal broadcast transmission can be restored through the internal application layer control, that is, the non-transportation mode state switch is completed. The whole process takes about 2s-3s. The solution for exiting the transport mode disclosed in the present invention is safe and reliable, and there is no need to worry about the possibility that the UWB smart key will exit the transport mode during transportation due to accidental key pressing.

[0094] The inventors tested the effect of this solution, and the test conditions and test methods are as follows:

[0095] Test conditions: 40 vehicles are selected from the production line for tracking test, of which the first 20 vehicles use the existing method of manually pressing the lock key and the tailgate key to control the key to enter the transport mode, and exit the transport mode by shaking the key or pressing any button, and the last 20 vehicles use the method of exiting the transport mode of the automobile smart key proposed in this disclosure;

[0096] Test tool: Use the UWB smart key power test dedicated engineering APP test;

[0097] Test method: Record the unique vehicle identification number (VIN) of each vehicle, and test the battery power of the UWB smart key before the vehicle is shipped and after the vehicle is shipped to the store.

[0098] The comparison of the test results is shown in Figure 6(a) and Figure 6(b), where Figure 6(a) is a schematic diagram of the power loss of the car smart key before shipment and after arrival at the store using the prior art. It can be seen that the UWB smart key of the vehicle using the prior art loses about 14% of power during transportation; Figure 6(b) is a schematic diagram of the power loss of the car smart key before shipment and after arrival at the store using the present solution. It can be seen that the UWB smart key of the vehicle using the present solution loses about 0.35% of power during transportation, and there is almost no problem of abnormal power consumption during transportation.

[0099] In summary, the solution of the present disclosure can solve the following problems or achieve corresponding effects:

[0100] (1) Solve the problem of repeated or continuous connection and pairing between the ultra-wideband smart key terminal and the vehicle-side Bluetooth communication main module during long-distance transportation, which causes a large amount of key battery and vehicle battery power loss;

[0101] (2) It reduces labor costs and eliminates the need to manually press the smart key of each vehicle to enter the transport mode;

[0102] (3) Save a lot of time and cost. The entry and exit functions of the transportation mode can be completed through on-line diagnosis, without spending a lot of time offline execution;

[0103] (4) The transport mode can be entered and exited through diagnostic commands, which provides high reliability and safety.

[0104] In order to implement the above-mentioned embodiments, the present disclosure further provides a transport mode exit device for a car smart key, which can be implemented by software and / or hardware and can be integrated in a vehicle.

[0105] Figure 7 This is a schematic diagram of the structure of a transport mode exit device for a smart car key provided by an embodiment of the present disclosure, such as Figure 7 As shown, the transport mode exit device 30 of the automobile smart key may include: a starting module 310 , a connection establishing module 320 and a command sending module 330 .

[0106] The start module 310 is used to start the Bluetooth broadcast transceiver function in response to receiving the diagnostic instruction to exit the transport mode;

[0107] A connection establishing module 320, configured to establish a Bluetooth connection with the vehicle smart key in response to searching for a Bluetooth broadcast signal sent by the vehicle smart key;

[0108] The instruction sending module 330 is used to send a transport mode exit instruction to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

[0109] Optionally, the connection establishing module 320 is further configured to:

[0110] In response to searching for a Bluetooth broadcast signal sent by a car smart key, acquiring a key identifier of the car smart key carried by the Bluetooth broadcast signal;

[0111] Determining whether the identity of the automobile smart key is legal based on the key identifier;

[0112] When it is determined that the identity of the vehicle smart key is legitimate, a Bluetooth connection is established with the vehicle smart key.

[0113] Optionally, the instruction sending module 330 includes:

[0114] An instruction generating unit, used for generating an instruction for exiting a transport mode;

[0115] An encryption unit, used for performing encryption operation on the transport mode exit instruction based on a preset encryption key to generate an instruction ciphertext;

[0116] An instruction sending unit is used to send the instruction ciphertext to the automobile smart key through the Bluetooth connection, wherein after receiving the instruction ciphertext, the automobile smart key uses a preset decryption key to decrypt the instruction ciphertext to obtain the transport mode exit instruction, and exits the transport mode in response to the transport mode exit instruction.

[0117] Further optionally, the instruction generation unit is further configured to:

[0118] Get the vehicle's identity and current timestamp;

[0119] A transport mode exit instruction is generated based on the identity identifier and the current timestamp, wherein the transport mode exit instruction carries the identity identifier and the current timestamp.

[0120] The transport mode exit device for a smart car key applicable to a vehicle provided in the embodiments of the present disclosure can execute the transport mode exit method for a smart car key applicable to a vehicle provided in the embodiments of the present disclosure, and has the corresponding functional modules and beneficial effects of the execution method. For the contents not fully described in the embodiments of the device of the present disclosure, reference can be made to the description in any method embodiment of the present disclosure.

[0121] In order to implement the above-mentioned embodiment, the present disclosure also provides another transport mode exit device of a car smart key, which can be implemented by software and / or hardware and can be integrated in the car smart key.

[0122] Figure 8 This is a structural diagram of a transport mode exit device for a smart car key provided by another embodiment of the present disclosure, such as Figure 8 As shown, the transport mode exit device 40 of the automobile smart key may include: a broadcast sending module 410 and an exit module 420 .

[0123] The broadcast sending module 410 is used to send a Bluetooth broadcast signal according to a preset period in response to receiving a user's pressing operation on a target button on the car smart key, so that the vehicle can establish a Bluetooth connection with the car smart key after searching for the Bluetooth broadcast signal;

[0124] The exit module 420 is configured to exit the transport mode in response to receiving a transport mode exit instruction sent by the vehicle via the Bluetooth connection.

[0125] Optionally, the transport mode exit instruction carries the vehicle's identity and a timestamp, and the timestamp is used to indicate the generation time of the transport mode exit instruction; the exit module 420 is further used to:

[0126] In response to receiving a transport mode exit instruction sent by the vehicle through the Bluetooth connection, acquiring the identity identifier and the timestamp carried by the transport mode exit instruction;

[0127] When the identity is consistent with the pre-stored vehicle identity and the timestamp is later than the timestamp carried by the previous instruction, the transport mode is exited.

[0128] Optionally, the transport mode exit device 40 of the automobile smart key further includes:

[0129] A monitoring module, configured to monitor whether a device has established a Bluetooth connection with the automobile smart key within a preset time period after sending a Bluetooth broadcast signal according to a preset period;

[0130] The control module is used to stop sending Bluetooth broadcast signals and maintain the transportation mode when it is detected that the automobile smart key has not established a Bluetooth connection with any device within the preset time period.

[0131] The device for exiting the transport mode of a car smart key provided in the embodiment of the present disclosure and applicable to the car smart key can execute the method for exiting the transport mode of a car smart key provided in the embodiment of the present disclosure and applicable to the car smart key, and has the functional modules and beneficial effects corresponding to the execution method. For the contents not fully described in the embodiment of the device of the present disclosure, reference can be made to the description in any method embodiment of the present disclosure.

[0132] The embodiment of the present disclosure also provides a vehicle, including a processor and a memory; the processor calls the program or instructions stored in the memory to execute the steps of each embodiment of the method for exiting the transport mode of the automobile smart key as described in any of the aforementioned embodiments. To avoid repeated description, they will not be repeated here.

[0133] An embodiment of the present disclosure also provides a smart car key, including a processor and a memory; the processor calls the program or instructions stored in the memory to execute the steps of each embodiment of the method for exiting the transport mode of the smart car key as described in any of the aforementioned embodiments. To avoid repeated description, they will not be repeated here.

[0134] The embodiments of the present disclosure also provide a computer-readable storage medium, which is non-transitory and stores programs or instructions. The programs or instructions enable a computer to execute the steps of each embodiment of the method for exiting the transport mode of a smart key of a car as described in any of the aforementioned embodiments. To avoid repeated description, they will not be repeated here.

[0135] The embodiments of the present disclosure also provide a computer program product, which is used to execute the steps of each embodiment of the method for exiting the transport mode of a smart key of a car as described in any of the aforementioned embodiments.

[0136] It should be noted that, in this article, relational terms such as "first" and "second" 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 sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0137] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for exiting the transport mode of a car smart key, characterized in that: The method is applied to a vehicle and comprises: In response to receiving a diagnostic instruction to exit the shipping mode, activating a Bluetooth broadcast transceiver function; In response to searching for a Bluetooth broadcast signal sent by a car smart key, establishing a Bluetooth connection with the car smart key; A transport mode exit instruction is sent to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

2. The method according to claim 1, characterized in that: The step of establishing a Bluetooth connection with the automobile smart key in response to searching for a Bluetooth broadcast signal sent by the automobile smart key comprises: In response to searching for a Bluetooth broadcast signal sent by a car smart key, acquiring a key identifier of the car smart key carried by the Bluetooth broadcast signal; Determining whether the identity of the automobile smart key is legal based on the key identifier; When it is determined that the identity of the vehicle smart key is legitimate, a Bluetooth connection is established with the vehicle smart key.

3. The method according to claim 1, characterized in that The step of sending a transport mode exit instruction to the automobile smart key through the Bluetooth connection, so that the automobile smart key exits the transport mode in response to the transport mode exit instruction, comprises: Generates a transport mode exit instruction; Performing encryption operation on the transport mode exit instruction based on a preset encryption key to generate an instruction ciphertext; The command ciphertext is sent to the car smart key via the Bluetooth connection, wherein after receiving the command ciphertext, the car smart key uses a preset decryption key to decrypt the command ciphertext to obtain the transport mode exit command, and exits the transport mode in response to the transport mode exit command.

4. The method according to claim 3, characterized in that: The generating of the transport mode exit instruction comprises: Get the vehicle's identity and current timestamp; A transport mode exit instruction is generated based on the identity identifier and the current timestamp, wherein the transport mode exit instruction carries the identity identifier and the current timestamp.

5. A method for exiting the transport mode of a car smart key, characterized in that: The method is applied to a car smart key, comprising: In response to receiving a user's pressing operation on a target button on the automobile smart key, sending a Bluetooth broadcast signal according to a preset period, so that the vehicle can establish a Bluetooth connection with the automobile smart key after searching for the Bluetooth broadcast signal; In response to receiving a transport mode exit command sent by the vehicle via the Bluetooth connection, exiting the transport mode.

6. The method according to claim 5, characterized in that The transport mode exit instruction carries the vehicle's identity and a timestamp, and the timestamp is used to indicate the generation time of the transport mode exit instruction; The step of exiting the transport mode in response to receiving a transport mode exit instruction sent by the vehicle via the Bluetooth connection comprises: In response to receiving a transport mode exit instruction sent by the vehicle through the Bluetooth connection, acquiring the identity identifier and the timestamp carried by the transport mode exit instruction; When the identity is consistent with the pre-stored vehicle identity and the timestamp is later than the timestamp carried by the previous instruction, the transport mode is exited.

7. The method according to claim 5, characterized in that After sending the Bluetooth broadcast signal according to the preset period, the method further includes: Monitoring whether a device establishes a Bluetooth connection with the vehicle smart key within a preset time period; When it is detected that the vehicle smart key has not established a Bluetooth connection with any device within the preset time period, the sending of the Bluetooth broadcast signal is stopped and the transport mode is maintained.

8. A transport mode exit device for a car smart key, characterized in that: Applied to a vehicle, the device comprises: A start module, configured to start a Bluetooth broadcast transceiver function in response to receiving a diagnostic instruction to exit the transport mode; A connection establishing module, configured to establish a Bluetooth connection with the automobile smart key in response to searching for a Bluetooth broadcast signal sent by the automobile smart key; The instruction sending module is used to send a transport mode exit instruction to the vehicle smart key through the Bluetooth connection, so that the vehicle smart key exits the transport mode in response to the transport mode exit instruction.

9. A transport mode exit device for a car smart key, characterized in that: Applied to automobile smart keys, the device comprises: A broadcast sending module, configured to send a Bluetooth broadcast signal according to a preset period in response to receiving a user's pressing operation on a target button on the automobile smart key, so that the vehicle can establish a Bluetooth connection with the automobile smart key after searching for the Bluetooth broadcast signal; The exit module is used to exit the transport mode in response to receiving a transport mode exit instruction sent by the vehicle through the Bluetooth connection.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute the method for exiting the transport mode of a smart key for a vehicle as described in any one of claims 1 to 7.

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