Remote standby unlocking method, vehicle-mounted communication module thereof, door lock controller and system

Abstract

A remote standby unlocking method for a vehicle, comprising: a T-BOX acquiring vehicle condition information (S20); the T-BOX reports the vehicle condition information to the mobile terminal APP (S30); the mobile terminal APP determines whether the reported vehicle condition information is abnormal (S40); if the vehicle door is abnormal, the mobile terminal APP determines whether the current state of the vehicle door is a vehicle locking state (S50); if the vehicle door is in the vehicle locking state, the mobile terminal APP pops up a window to prompt that the vehicle is currently abnormal, and inquires whether standby unlocking is started or not (S60); and under the condition that the standby unlocking function is selected to be enabled on the mobile terminal APP, executing standby unlocking (S70). The invention further provides a corresponding vehicle-mounted communication module, a door lock controller and a remote standby unlocking system of the door lock controller. Under the condition that the storage battery is insufficient in power or the CAN network communication of the whole vehicle is abnormal, a standby unlocking instruction can be issued to the vehicle-mounted communication module through the mobile terminal APP, and the vehicle-mounted communication module directly controls the door lock controller to execute vehicle door unlocking.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle unlocking, and more particularly, to a method for remote standby unlocking of a vehicle, and an on-vehicle communication module, a door lock controller, and a system for implementing the method. Background Art

[0002] With the development of intelligent vehicles, mechanical car keys are becoming obsolete. The purpose of traditional mechanical keys is currently only to serve as a primitive means of unlocking the vehicle. When the electronic key system or digital key system fails, or when the vehicle battery is low and unable to open the door, the traditional mechanical key is used to open the door. However, if the vehicle user forgets to bring the mechanical key, the door will not be opened and the vehicle cannot be used. Summary of the Invention

[0003] The present invention aims to provide a remote backup unlocking method for a vehicle. In the event of a low battery or abnormal CAN (Controller Area Network) communication in the vehicle, a backup unlocking command is sent to an onboard communication module (Telematics Box, abbreviated as T-Box) via a mobile terminal app, without using a mechanical key. The onboard communication module then directly controls the door lock controller to unlock the vehicle door.

[0004] Another object of the present disclosure is to provide a vehicle-mounted communication module that can detect faults such as low battery in the vehicle or abnormal communication in the vehicle's CAN network, report the above faults, receive backup unlocking instructions, and send control signals to unlock the vehicle doors.

[0005] Another object of the present disclosure is to provide a door lock controller that receives a control signal for unlocking a vehicle door and executes vehicle door unlocking.

[0006] Yet another object of the present disclosure is to provide a remote backup unlocking system to implement the aforementioned method.

[0007] This disclosure provides a remote backup unlocking method for a vehicle. The vehicle includes an onboard communication module, a door lock controller, a body control module (BCM), a gateway (GW), and a battery. The onboard communication module is communicatively connected to a telematics service provider (TSP) platform, which in turn is communicatively connected to a mobile terminal app.

[0008] The remote backup unlocking method includes the on-board communication module obtaining vehicle condition information and reporting the vehicle condition information to the mobile terminal APP; the mobile terminal APP determines whether the reported vehicle condition information is abnormal; when the judgment result is abnormal, it further determines whether the current state of the vehicle door is a locked state; if the judgment result is that the vehicle door is in a locked state, the mobile terminal APP pops up a window to prompt that the vehicle is currently abnormal and asks whether to enable backup unlocking; and when the backup unlocking function is selected to be enabled on the mobile terminal APP, the on-board communication module controls the execution of backup unlocking.

[0009] The remote standby unlocking method provided by the present invention adds a vehicle condition signal for reporting the standby unlocking mode, utilizes the original vehicle condition data reporting path, and the on-board communication module obtains the vehicle condition information through the communication path, and then utilizes the original vehicle condition data reporting path, and the on-board communication module reports the vehicle condition information to the mobile terminal APP, that is, adding abnormal information related to opening the vehicle door to the mobile terminal APP, and the mobile terminal APP determines to send a standby unlocking instruction to the on-board communication module based on the reported vehicle condition information, and the on-board communication module directly controls the door lock controller to execute the door unlocking.

[0010] In one exemplary embodiment of the remote backup unlocking method, the vehicle-mounted communication module includes a backup battery. Acquiring vehicle condition information by the vehicle-mounted communication module includes obtaining the operating status of the battery and determining whether the battery is low. If the battery is not low, the vehicle condition information is defined as normal for the backup unlocking mode. If the battery is low, the vehicle switches to the backup battery, and the vehicle condition information is defined as low for the backup unlocking mode. This allows the vehicle-mounted communication module to determine whether the battery is low.

[0011] The on-board communication module obtains vehicle condition information by acquiring the communication status of the vehicle's CAN network, including the communication status of the gateway and the body control module. In one exemplary embodiment, the gateway periodically sends a first message to the on-board communication module, and the on-board communication module periodically receives the first message from the gateway. If the on-board communication module does not receive the first message within a first preset period, the vehicle condition information is defined as a vehicle communication failure in the backup unlocking mode. If the on-board communication module receives the first message within a first preset period, the module further determines the CAN signal value included in the first message. If the CAN signal value is abnormal, the vehicle condition information is defined as a vehicle communication failure in the backup unlocking mode. If the CAN signal value is normal, the vehicle condition information is defined as a normal backup unlocking mode. The on-board communication module thus determines whether a communication failure has occurred in the vehicle's CAN network and whether the communication failure is between the on-board communication module and the gateway or between the gateway and the body control module.

[0012] In one exemplary embodiment, obtaining the communication status of the body control module specifically involves the body control module periodically sending a second message to the gateway; the gateway periodically receiving the second message, and if the gateway fails to receive the second message within a second preset period, setting the CAN signal value as abnormal and periodically sending the CAN signal value as part of the first message to the on-board communication module. In this way, whether a communication failure has occurred between the gateway and the body control module is determined, and the occurrence of the communication failure between the gateway and the body control module is reported to the on-board communication module.

[0013] In another exemplary embodiment of the remote standby unlocking method, the vehicle-mounted communication module reporting vehicle condition information to the mobile terminal app specifically includes the vehicle-mounted communication module sending the vehicle condition information to the vehicle-connected TSP platform; the vehicle-connected TSP platform forwarding the received vehicle condition information to the mobile terminal app; and the mobile terminal app receiving the vehicle condition information forwarded by the vehicle-connected TSP platform. In this manner, the vehicle-mounted communication module reports the vehicle condition information to the mobile terminal app.

[0014] In another exemplary embodiment of the remote backup unlocking method, executing the backup unlocking step includes a mobile terminal app sending a backup unlocking command to the vehicle communication module, the vehicle communication module receiving the backup unlocking command, the vehicle communication module converting the unlocking control signal waveform from an inactive state to an active state upon receiving the backup unlocking command, the vehicle communication module sending the unlocking control signal to the door lock controller, and the door lock controller detecting the unlocking control signal and triggering the door unlocking action. This allows the vehicle communication module to directly control the door lock controller to unlock the vehicle door in the event of a battery discharge or a communication failure on the vehicle's CAN network.

[0015] In another exemplary embodiment of the remote backup unlocking method, the mobile terminal app sends the backup unlocking instruction to the on-board communication module by, for example, sending the backup unlocking instruction to the vehicle network TSP platform, and the vehicle network TSP platform forwarding the received backup unlocking instruction to the on-board communication module. In this way, the mobile terminal app sends the backup unlocking instruction to the on-board communication module.

[0016] In another exemplary embodiment of the remote backup unlocking method, before converting the unlocking control signal waveform from the inactive state to the active state, a determination is made as to whether the vehicle condition information indicates that the backup unlocking mode is a battery-depleted state. If so, the door lock backup power supply circuit is closed and a backup power supply timer is started. This ensures that even in the event of a battery-depleted state, the vehicle communication module provides backup power to the door lock controller, thereby enabling the vehicle door to be opened.

[0017] In another exemplary embodiment of the remote backup unlocking method, the method further includes disconnecting the door lock backup power circuit when the backup power timer reaches a preset threshold. This stops providing backup power to the door lock controller after the vehicle door is opened, thereby preserving the backup battery charge.

[0018] In another exemplary embodiment of the remote backup unlocking method, triggering the vehicle door unlocking action further includes: triggering the vehicle door unlocking action when the door lock controller continuously detects that the unlocking control signal reaches a preset door opening control threshold a preset number of times, thereby preventing false triggering.

[0019] The present disclosure also provides an on-board communication module, which is used to obtain vehicle condition information and report the vehicle condition information to a mobile terminal APP; when the backup unlocking function is selected to be enabled on the mobile terminal APP, the on-board communication module controls the execution of the backup unlocking. The on-board communication module controls the execution of the backup unlocking, including: the on-board communication module receives the backup unlocking instruction issued by the mobile terminal APP, generates an unlocking control signal, and sends an unlocking control signal. Before generating the unlocking control signal, it also includes judging whether the vehicle condition information indicates that the backup unlocking mode is a low-power vehicle battery. If the judgment result is yes, the door lock backup power supply circuit is closed, and a backup power supply timer is started to start timing. When the backup power supply timer reaches a preset timing threshold, the door lock backup power supply circuit is disconnected.

[0020] In one example, the in-vehicle communication module includes a microcontroller unit (MCU), a backup unlock link connected to the MCU, a door lock backup power supply circuit switching management module, and a door lock backup power supply circuit connected to the door lock backup power supply circuit switching management module. The MCU is used to generate an unlock control signal and transmit the unlock control signal via the backup unlock link. It is also used to set a backup power supply timer that determines the closing duration of the door lock backup power supply circuit. The door lock backup power supply circuit switching management module closes the door lock backup power supply circuit and simultaneously starts the backup power supply timer. When the backup power supply timer reaches a preset timing threshold, it disconnects the door lock backup power supply circuit.

[0021] The present disclosure further provides a door lock controller, which is used to execute vehicle door unlocking, specifically, to set a door opening control threshold and periodically check the unlocking control signal. When the unlocking control signal continuously detected by the door lock controller reaches the door opening control threshold for a preset number of times, the vehicle door unlocking action is triggered.

[0022] The present disclosure further provides a remote backup unlocking system for a vehicle, which includes an on-board communication module and a door lock controller. The door lock controller is connected to the MCU of the on-board communication module via a backup unlocking link. The MCU is used to generate an unlocking control signal and transmit the unlocking control signal to the door lock controller via the backup unlocking link. When the door lock controller continuously detects that the unlocking control signal sent by the MCU reaches a preset door opening control threshold a preset number of times, the vehicle door unlocking action is triggered. The door lock controller is connected to the door lock backup power supply circuit switching management module via the door lock backup power supply circuit. When the on-board communication module receives a backup unlocking instruction and the vehicle condition information indicates that the backup unlocking mode is a low battery of the vehicle battery, the door lock backup power supply circuit switching management module closes the door lock backup power supply circuit to provide backup power to the door lock controller, and simultaneously starts the backup power supply timer to start timing. When the backup power supply timer reaches a preset timing threshold, the door lock backup power supply circuit is disconnected, thereby stopping the provision of backup power to the door lock controller.

[0023] In an exemplary embodiment of the remote backup unlocking system, the remote backup unlocking system further includes: a body control module, a gateway vehicle networking TSP platform and a mobile terminal APP.

[0024] The vehicle communication module is communicatively connected to the gateway and the vehicle networking TSP platform. It is used to obtain vehicle status information and send it to the vehicle networking TSP platform. It also receives backup unlocking instructions forwarded by the vehicle networking TSP platform, generates unlocking control signals, and sends the unlocking control signals to the door lock controller.

[0025] The body control module is communicatively connected to the gateway and is used to send a second message to the gateway.

[0026] The gateway is used to send a first message to the vehicle-mounted communication module; and is used to periodically obtain a second message sent by the body control module, and when the second message sent by the body controller is not received within a second preset period, set the CAN signal value to be abnormal, and periodically send the CAN signal value as part of the first message to the vehicle-mounted communication module.

[0027] The Internet of Vehicles TSP platform is communicatively connected to the mobile terminal. When the Internet of Vehicles TSP platform receives vehicle condition information sent by the on-board communication module, it forwards the received vehicle condition information to the mobile terminal APP; and when the Internet of Vehicles TSP platform receives a backup unlocking instruction sent by the mobile terminal APP, it forwards the received backup unlocking instruction to the on-board communication module.

[0028] The mobile terminal APP receives the vehicle condition information forwarded by the Internet of Vehicles TSP platform and when it determines that the vehicle condition information is abnormal, if the vehicle door is in the locked state, the above abnormality and / or function options are displayed on the mobile terminal APP. If the backup unlocking function is selected to be enabled on the mobile terminal APP, a backup unlocking instruction is sent to the Internet of Vehicles TSP platform.

[0029] In another exemplary embodiment of the remote backup unlocking system, the vehicle condition information obtained by the on-board communication module includes: periodically obtaining a first message sent from the gateway, and if the first message is not obtained within a first preset period, defining the vehicle condition information as a backup unlocking mode of vehicle communication failure; if the first message is obtained, determining a CAN signal value included in the first message, and if the determination result is that the CAN signal value is abnormal, defining the vehicle condition information as a backup unlocking mode of vehicle communication failure; and if the determination result is that the CAN signal value is normal, defining the vehicle condition information as a backup unlocking mode of normal.

[0030] In another exemplary embodiment of the remote backup unlocking system, the vehicle-mounted communication module obtains vehicle condition information including: obtaining the working status of the battery and determining whether the working status is low on power; if the judgment result is not low on power, the vehicle condition information is defined as the backup unlocking mode is normal; if the judgment result is low on power, switching to the backup battery, and defining the vehicle condition information as the backup unlocking mode is low on power of the vehicle battery.

[0031] In another exemplary embodiment of the remote backup unlocking system, the vehicle communication module generates the unlocking control signal including: converting an inactive waveform of the unlocking control signal into an active waveform.

[0032] The solution disclosed in the present invention utilizes the backup battery that is standard on current vehicle communication modules and redesigns the power management strategy of the vehicle communication module. When the vehicle battery is powered, the backup battery can not only provide power for the vehicle communication module to keep the vehicle communication module working normally, but also provide power for the door lock control system. When the vehicle battery is powered, the door can still be opened remotely, and the traditional mechanical key can be eliminated.

[0033] Since the body control module and the on-board communication module are not directly connected, the on-board communication module cannot directly monitor the communication status of the body control module. The technical solution of the present invention utilizes the existing architecture and network communication solution of the vehicle to report the communication status of the body control module to the on-board communication module by adding a CAN signal value.

[0034] Furthermore, by adding vehicle condition information for reporting the backup unlocking mode, the disclosed technical solution leverages the existing vehicle condition data reporting path to promptly alert users to the current vehicle status and whether to enable the backup unlocking mode. Furthermore, even in the event of a vehicle key system failure, such as a gateway or body control module malfunction, or abnormal vehicle CAN network communication, remote door unlocking is still possible. Furthermore, by adding a hardwired connection between the door lock controller and the onboard communication module to transmit the unlocking control signal, the disclosed technical solution significantly improves the success rate of unlocking the vehicle door. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following drawings are merely provided to illustrate and explain the present disclosure, and do not limit the scope of the present disclosure.

[0036] Figure 1 shows a schematic block diagram of a remote backup unlocking system for a vehicle; Figure 2 yes Figure 1 A schematic block diagram of the vehicle communication module 100 of the remote backup unlocking system and a schematic diagram of the connection relationship with the door lock controller 200; Figure 3 A schematic flow chart for remote backup unlocking of a vehicle is shown; Figure 4 A schematic flow chart of detecting a low battery in a vehicle is shown; Figure 5 A schematic flow chart of detecting whether a communication failure occurs in a CAN network is shown; Figure 6 A schematic flow chart for detecting a communication failure between a body control module and a gateway is shown; Figure 7 A schematic flow chart showing the vehicle status information reported by the vehicle communication module to the APP is shown; Figure 8 A schematic flow chart of performing standby unlocking is shown; Figure 9 A schematic flow chart showing the process of the APP sending a backup unlock instruction to the vehicle communication module is shown; Figure 10 FIG. 4 is a schematic diagram of a waveform of an unlock control signal.

[0037] Label Description 1 vehicle 100 Vehicle Communication Module 110 MCU 120 Door lock backup power supply circuit switching management module 130 spare battery 140 Charge and discharge management module 150 Active / standby power supply switching management module 160 4G communication module 180 Door lock backup power supply circuit 190 Alternative unlock link 200 Door Lock Controller 300 Body Control Module 400 Gateway 500 Internet of Vehicles TSP Platform 600 mobile terminal APP 700 Keyless start and entry system 800 Vehicle Battery 810 main power supply line S20 Vehicle Condition Acquisition Steps S21 Battery status acquisition steps S22 Battery status judgment steps S24 First message sending step S241 Second message sending step S242 Second message acquisition step S25 First message acquisition step S30 Vehicle Condition Reporting Steps S31 Vehicle status information sending steps S32 Vehicle status information forwarding steps S33 Vehicle status information receiving steps S40 Vehicle Condition Judgment Steps S50 Door Status Judgment Steps S60 Tips / Selection Steps S70 performs the backup unlocking procedure S71 Standby unlock command issuance steps S72 Standby unlock command receiving step S73 Alternate unlocking mode determination steps S74 performs backup power supply steps S75 unlock control signal conversion steps S76 unlock control signal sending steps S77 Execute door unlocking steps S711 Alternative unlock command sending steps S712 Alternative unlock instruction forwarding steps S78 Door Lock Backup Power Supply Circuit Disconnection Procedure DETAILED DESCRIPTION

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the present disclosure are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0039] In this document, “illustrative” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “illustrative” should not be interpreted as a more preferred or more advantageous technical solution.

[0040] In this article, "first", "second", etc. do not indicate their importance or order, but are only used to indicate the difference between each other for the convenience of document description.

[0041] To simplify the drawings, each figure schematically shows only the parts related to the present disclosure, which do not represent the actual structure of the product.

[0042] Figure 1 A block diagram of a remote backup unlocking system for a vehicle is shown. Figure 1 As shown, controlled vehicle 1 includes an onboard communication module (T-BOX) 100, a door lock controller 200, a body control module (BCM) 300, a gateway 400, and a battery 800. It also includes a Passive-Entry-Passive-Start (PEPS) system 700. The onboard communication module 100, door lock controller 200, BCM 300, gateway 400, and PEPS 700 are all powered by battery 800. The remote backup unlocking system also includes a connected vehicle (TSP) platform 500 and a mobile terminal app 600.

[0043] The vehicle-mounted communication module 100 is communicatively connected to the gateway 400 and the connected vehicle TSP platform 500. For example, the vehicle-mounted communication module 100 and the gateway 400 can be connected via the vehicle's CAN network, and the vehicle-mounted communication module 100 and the connected vehicle TSP platform 500 can be connected via a wireless communication network, including but not limited to a cellular communication network, Bluetooth, NFC, etc. The body control module 300 is communicatively connected to the gateway 400. For example, the body control module 300 and the gateway 400 can be connected via the vehicle's CAN network, but is not limited to this. The connected vehicle TSP platform 500 is communicatively connected to the mobile terminal app. For example, the connected vehicle TSP platform 500 and the mobile terminal app can be connected via a wireless communication network, including but not limited to a cellular communication network, Bluetooth, NFC, etc.

[0044] In existing scenarios where a vehicle door is unlocked remotely without a mechanical key, or using a mobile phone app or proximity (Bluetooth or NFC) to unlock the door, the communication path is as follows: the vehicle communication module 100 sends a door unlock command to the gateway 400, which then forwards the command to the body control module 300. The body control module 300 receives the door unlock command and operates the door lock controller 200 to unlock the vehicle door. When unlocking the door using a local electronic key, the communication link is as follows: the PEPS 700 sends a door unlock command to the body control module 300, which then receives the command and operates the door lock controller 200 to unlock the vehicle door.

[0045] According to the above communication path, there are two kinds of abnormalities that can be clearly identified: one is that a communication abnormality occurs between the vehicle-mounted communication module 100 and the gateway 400, and the normal remote unlocking command cannot be issued normally. In this case, the digital key system will also fail; the other is that a communication abnormality occurs between the gateway 400 and the body control module 300. In this case, no matter whether the mobile phone APP remotely opens the door, the mobile phone opens the door at close range, or the local electronic key opens the door, the door opening command cannot be issued normally.

[0046] Whether you open the door remotely using the mobile phone APP, opening the door at close range using the mobile phone, or opening the door locally with the electronic key, all rely on the vehicle's electrical system. If the vehicle's battery is low, neither remote door opening using the mobile phone APP, opening the door at close range using the mobile phone, nor opening the door locally with the electronic key will work properly.

[0047] For this reason, Figure 1 As shown, in an exemplary embodiment, a bidirectional communication path is implemented between the vehicle communication module 100 and the gateway 400, and a bidirectional communication path is implemented between the gateway 400 and the body control module 300. The original reporting communication path between the vehicle communication module 100 and the mobile terminal APP 600 is utilized to implement the vehicle communication module 100 detecting the above fault and forwarding the above fault to the mobile terminal APP 600 via the vehicle network TSP platform 500, as well as implementing the backup unlocking function when the above fault occurs. Figure 1 As shown, in an exemplary embodiment, the vehicle communication module 100 and the door lock controller 200 are connected via a backup unlocking link 190 to implement the backup unlocking function. The backup unlocking link 190 can be any suitable wire.

[0048] Since the on-board communication module has a backup battery inside, when the vehicle battery is low, the on-board communication module can switch to the backup battery for power supply to continue to maintain the normal operation of the on-board communication module. Therefore, the on-board communication module can provide backup power for the door lock controller. Figure 1As shown, in an exemplary embodiment, the vehicle-mounted communication module 100 is connected to the door lock controller 200 through the door lock backup power supply circuit 180 , and the vehicle-mounted communication module 100 provides backup power to the door lock controller 200 through the door lock backup power supply circuit 180 .

[0049] Figure 2 yes Figure 1 The block diagram of the vehicle communication module 100 of the remote backup unlocking system and the schematic diagram of the connection relationship with the door lock controller 200 are shown. Figure 2 As shown, in an exemplary embodiment, the in-vehicle communication module 100 includes an MCU 110, a door lock backup power supply circuit switching management module 120, a backup battery 130, a charge and discharge management module 140, a primary and backup power supply switching management module 150, a 4G communication module 160, a door lock backup power supply circuit 180 connected to the door lock backup power supply circuit switching management module 120, and a backup unlocking link 190 connected to the MCU 110. The MCU 110 manages the charging and discharging of the backup battery 130 through the charge and discharge management module 140.

[0050] like Figure 1 and 2 As shown, in an exemplary embodiment, the positive terminal of the battery 800 is connected to the primary-backup power supply switching management module 150 of the vehicle-mounted communication module 100 via the main power supply line 810. The main power supply line 810 can be any suitable form of wire. When the battery 800 is in normal working condition, the primary-backup power supply switching management module 150 connects the vehicle-mounted communication module 100 to the main power supply line 810, and the battery 800 supplies power to the vehicle-mounted communication module 100 via the main power supply line 810. When the battery 800 is low on power, the primary-backup power supply switching management module 150 switches the vehicle-mounted communication module 100 to the backup battery 130, and the backup battery 130 supplies power to the vehicle-mounted communication module 100.

[0051] like Figure 2 As shown, in one exemplary embodiment, the door lock controller 200 is connected to the door lock backup power supply circuit switching management module 120 via the door lock backup power supply circuit 180. Therefore, if the battery is depleted, the door lock backup power supply circuit switching management module 120 can switch the door lock controller 200 to the backup battery 130, allowing the vehicle communication module 100 to provide backup power to the door lock controller 200 via the door lock backup power supply circuit 180. The door lock backup power supply circuit 180 can be composed of a relay and a switch (not shown in the figure). The door lock backup power supply circuit switching management module 120 can trigger the relay to control the closing and opening of the switch.

[0052] like Figure 2As shown, in an exemplary embodiment, the door lock controller 200 is connected to the MCU 110 via the backup unlocking link 190. In the event of a vehicle communication failure or battery depletion, the vehicle communication module 100 directly controls the door lock controller 200 to unlock the vehicle door.

[0053] Next, the remote backup unlocking method for a vehicle provided by the present disclosure is described in detail.

[0054] Figure 3 1 shows a schematic flow chart for remote backup unlocking of a vehicle. Figure 3 As shown, in an exemplary embodiment, the remote backup unlocking method for a vehicle includes: a vehicle condition acquisition step S20, a vehicle condition reporting step S30, a vehicle condition judgment step S40, a door status judgment step S50, a prompt / selection step S60, and an execution backup unlocking step S70.

[0055] In the vehicle condition acquisition step S20, the vehicle condition information is acquired by the vehicle communication module 100. The vehicle condition information acquired by the vehicle communication module 100 includes the working state of the battery 800 and / or the communication state of the vehicle CAN network.

[0056] A variable representing the standby unlocking mode of the vehicle is defined in the vehicle communication module 100 , and is used to represent the working state of the battery 800 and / or obtain the communication state of the vehicle CAN network.

[0057] For example, the value of the backup unlock mode variable backup unlock mode can be defined as follows: backup unlock mode = 0x00 means normal; Backup unlock mode = 0x01 means the vehicle battery is low on power; Backup unlock mode = 0x02 indicates vehicle communication abnormality.

[0058] The vehicle condition information includes backup unlock mode information, namely backup unlock mode = 0x00, backup unlock mode = 0x01 or backup unlock mode = 0x02. However, the backup unlock mode variable backupunlockmode may also be encoded in other ways.

[0059] Figure 4 A schematic flow chart of detecting a vehicle battery failure is shown. Figure 4 As shown, in an exemplary embodiment, the vehicle condition acquisition step S20 includes a battery status acquisition step S21 and a battery status determination step S22.

[0060] In step S21, the vehicle-mounted communication module 100 obtains the operating status of the battery 800. Specifically, for example, in one exemplary embodiment, after the vehicle-mounted communication module 100 is remotely awakened, the vehicle-mounted communication module 100 reads the fault code associated with the battery 800 stored in the vehicle diagnostic system to obtain the operating status of the battery 800.

[0061] In step S22 , the vehicle communication module 100 determines whether the battery 800 is low on power according to the fault code.

[0062] If the result of the judgment is that the battery is not low, the vehicle condition information is defined as the backup unlock mode is normal. For example, the value of the backup unlock mode is set to: backup unlock mode=0x00.

[0063] If the battery is low, the backup battery 130 is switched to power the vehicle communication module 100, and the vehicle status information is defined as the backup unlock mode being low. For example, the backup unlock mode value is set to: backup unlock mode = 0x01. This allows the vehicle communication module to determine whether the battery is low.

[0064] The vehicle communication module 100 obtains the communication status of the CAN network, including the communication status between the vehicle communication module 100 and the gateway 400, and the communication status between the gateway 400 and the body control module 300. To this end, a message is defined that the gateway 400 periodically sends to the vehicle communication module 100, namely a first message, to indicate whether a communication anomaly has occurred between the vehicle communication module 100 and the gateway 400; a message is defined that the body control module 300 periodically sends to the gateway 400, namely a second message, to indicate whether a communication anomaly has occurred between the gateway 400 and the body control module 300; and a CAN signal value is defined to indicate the communication status between the gateway 400 and the body control module 300.

[0065] For example, define the CAN signal value GW_BCM_CommunicationStatus as: GW_BCM_CommunicationStatus=0x00: Indicates that the communication between the gateway and the body control module is normal GW_BCM_CommunicationStatus=0x01: Indicates that the communication between the gateway and the body control module is abnormal That is, when communication between the gateway 400 and the body control module 300 is normal, the CAN signal value GW_BCM_CommunicationStatus = 0x00; when communication between the gateway 400 and the body control module 300 is abnormal, the CAN signal value GW_BCM_CommunicationStatus = 0x01. The CAN signal value GW_BCM_CommunicationStatus backup unlock mode variable backup unlock mode can also be encoded in other ways.

[0066] The gateway 400 sends the CAN signal value as a part of the first message to the vehicle communication module 100 , and informs the vehicle communication module 100 of the communication status between the gateway 400 and the body control module 300 through the signal value.

[0067] Figure 5 FIG1 shows a schematic flow chart of detecting whether a communication failure occurs in a CAN network. Figure 5 As shown, in an exemplary embodiment, the vehicle condition acquisition step S20 includes a first message sending step S24 and a first message acquisition step S25.

[0068] In the first message sending step S24, the gateway 400 periodically sends the first message to the vehicle communication module 100. For example, the gateway 400 sends the first message to the vehicle communication module 100 every 10 ms, but the present invention is not limited thereto.

[0069] In the first message acquisition step S25, the vehicle communication module 100 periodically acquires the first message from the gateway 400. For example, the vehicle communication module 100 receives the first message every 10 ms, but is not limited thereto.

[0070] If the first message is not received within a first preset period, the vehicle condition information is defined as a backup unlock mode of vehicle communication failure. The first preset period can be set to 10 consecutive periods, or any other suitable number of consecutive periods, such as 15 or 20 periods. For example, in one example, if the vehicle communication module 100 does not receive the first message within 10 consecutive periods, that is, if the first message is not received within 100ms, the vehicle communication module 100 determines that a communication anomaly has occurred between the vehicle communication module 100 and the gateway 400, and sets the value of the backup unlock mode, for example, to: backup unlock mode = 0x02.

[0071] If the first message is acquired within a first preset period, the CAN signal value determination step is executed to determine the CAN signal value included in the first message. For example, in one example, if the vehicle communication module 100 acquires the first message within 10 consecutive periods, that is, within 100 ms, the vehicle communication module 100 further determines the CAN signal value GW_BCM_CommunicationStatus included in the first message. If the judgment result is that the CAN signal value is abnormal, for example, the CAN signal value GW_BCM_CommunicationStatus=0x01, it is determined that a communication abnormality occurs between the gateway 400 and the body control module 300, and the vehicle condition information is defined as the backup unlock mode is a vehicle communication failure, for example, the value of the backup unlock mode backupunlock mode is set to: backup unlock mode=0x02; if the judgment result is that the CAN signal value is normal, for example, the CAN signal value GW_BCM_CommunicationStatus=0x00, it is determined that the communication between the on-board communication module 100 and the gateway 400 is normal and the communication between the gateway 400 and the body control module 300 is normal, and the vehicle condition information is defined as the backup unlock mode is normal, for example, the value of the backup unlock mode backupunlockmode is set to: backup unlock mode=0x00.

[0072] The on-vehicle communication module 100 thereby obtains whether a communication failure occurs in the vehicle CAN network, and obtains whether the communication failure occurs between the on-vehicle communication module 100 and the gateway 400 or between the gateway 400 and the body control module 300.

[0073] Figure 6 A schematic flow chart of detecting a communication failure between a body control module and a gateway is shown. Figure 6 As shown, in an exemplary embodiment, the communication status between the gateway 400 and the body control module 300 is detected, specifically the first message sending step S24 also includes a second message sending step S241 and a second message obtaining step S242.

[0074] In the second message sending step S241, the body control module 300 periodically sends the second message to the gateway 400. For example, the body control module 300 sends the second message to the gateway 400 every 10 ms, but the present invention is not limited thereto.

[0075] In the second message acquisition step S242, the gateway 400 periodically acquires the second message. For example, the gateway 400 receives the second message every 10 ms, but the present invention is not limited thereto.

[0076] When the gateway 400 fails to obtain the second message within a second preset period, the CAN signal value is set to abnormal; otherwise, the CAN signal value is set to normal, and the CAN signal value is periodically sent to the vehicle communication module 100 as part of the first message. The second preset period can be set to 10 consecutive periods, or any other suitable number of consecutive periods, such as 15 or 20 periods. For example, in an exemplary embodiment, when the gateway 400 fails to obtain the second message within 10 consecutive periods, that is, the second message is not obtained within 100ms, the gateway 400 determines that a communication abnormality has occurred between the gateway 400 and the body control module 300, and sets the CAN signal value to abnormal, for example, setting the CAN signal value GW_BCM_CommunicationStatus to 0x01; otherwise, the CAN signal value is set to normal, for example, setting the CAN signal value GW_BCM_CommunicationStatus to 0x00. The gateway 400 sends the CAN signal value as part of the first message to the onboard communication module 100, notifying the onboard communication module 100 that a communication anomaly has occurred between the gateway 400 and the body control module 300. This determines whether a communication failure has occurred between the gateway 400 and the body control module 300, and reports the failure to the onboard communication module 100.

[0077] In the vehicle condition reporting step S30 , the vehicle communication module 100 reports the vehicle condition information to the mobile terminal APP 600 . Figure 7 The schematic flow chart of the vehicle communication module reporting vehicle status information to the APP is shown. Figure 7 As shown, in one exemplary embodiment, the vehicle condition reporting step S30 includes a vehicle condition information sending step S31, a vehicle condition information forwarding step S32, and a vehicle condition information receiving step S33. In the vehicle condition information sending step S31, the vehicle communication module 100 sends the vehicle condition information to the vehicle network TSP platform 500; in the vehicle condition information forwarding step S32, the vehicle network TSP platform 500 forwards the received vehicle condition information to the mobile terminal APP 600; and in the vehicle condition information receiving step S33, the mobile terminal APP 600 receives the vehicle condition information forwarded by the vehicle network TSP platform 500.

[0078] For example, in one exemplary embodiment, the vehicle condition information includes a value of a backup unlock mode. The in-vehicle communication module 100 transmits the vehicle condition information including the backup unlock mode value to the connected vehicle TSP platform 500. The connected vehicle TSP platform 500 forwards the vehicle condition information to the mobile terminal APP 600, which receives the forwarded vehicle condition information.

[0079] In vehicle condition determination step S40, mobile terminal app 600 determines whether the reported vehicle condition information is abnormal. For example, in one exemplary embodiment, mobile terminal app 600 determines the reported vehicle condition information. If the value of the backup unlock mode included in the vehicle condition information is 0x00, indicating that the vehicle battery 800 and the vehicle CAN network are operating normally, the process proceeds to step S80 without any pop-up window appearing on mobile terminal app 600.

[0080] If the result of vehicle condition determination step S40 is abnormal, the process proceeds to door status determination step S50 to determine whether the vehicle doors are currently locked. For example, in one exemplary embodiment, if the value of the backup unlock mode included in the vehicle condition information is not 0x00, the mobile terminal app 600 determines that the vehicle battery 800 and / or the vehicle CAN network are operating abnormally. In this case, the mobile terminal app 600 further determines whether the vehicle doors are currently locked. For example, the mobile terminal app 600 reads the locked state from vehicle-related data periodically reported by the vehicle, but this is not limited to this. For example, the vehicle's locked state can also be detected in real time.

[0081] If the result of the door status determination step S50 is that the door is in the open state, the process goes to step S80, and the mobile terminal APP 600 does not display any pop-up window prompt.

[0082] If the result of the vehicle door status determination step S50 is that the vehicle door is in the locked state, the process proceeds to the prompt / selection step S60, where an abnormality and / or function options are displayed on the mobile terminal APP 600. For example, in one exemplary embodiment, when the mobile terminal APP 600 determines that the vehicle door is in the locked state, if the value of the unlock mode backupunlockmode included in the vehicle condition information is 0x01, the mobile terminal APP 600 determines that the vehicle battery 800 is low on power, and the mobile terminal APP 600 displays the abnormality information and provides function options, for example, the displayed prompt message is "The vehicle battery is low on power, do you want to activate backup unlock?"; if the value of the unlock mode backupunlockmode included in the vehicle condition information is 0x02, the mobile terminal APP 600 determines that the vehicle communication is abnormal, and the mobile terminal APP 600 displays the abnormality information and provides function options, for example, the displayed prompt message is "The vehicle communication is abnormal, do you want to activate backup unlock?" At the same time, along with the above prompt information, the mobile terminal APP 600 displays the function options "Enable standby unlocking" and "Do not enable standby unlocking", or displays the function options "Yes" and "No", but is not limited thereto.

[0083] In the standby unlocking step S70, if the standby unlocking function is selected to be enabled on the mobile terminal APP 600, the door lock controller 200 performs the standby unlocking. For example, in one exemplary embodiment, if the function option selected on the mobile terminal APP 600 is "Do not enable standby unlocking" or "No", the mobile terminal APP 600 does not perform any processing; if the function option selected on the mobile terminal APP 600 is "Enable standby unlocking" or "Yes", the vehicle communication module 100 controls the execution of the standby unlocking.

[0084] Figure 8 FIG. 1 shows a schematic flow chart of executing standby unlocking. Figure 8 As shown, in an exemplary embodiment, executing the standby unlocking step S70 includes: a standby unlocking instruction issuing step S71, a standby unlocking instruction receiving step S72, an unlocking control signal converting step S75, an unlocking control signal sending step S76 and executing the vehicle door unlocking step S77.

[0085] In the standby unlocking instruction issuing step S71 , the mobile terminal APP 600 issues a standby unlocking instruction to the vehicle-mounted communication module 100 . Figure 9 The schematic flow chart of the APP sending the standby unlocking instruction to the vehicle communication module is shown. Figure 9 As shown, in an exemplary embodiment, the standby unlocking instruction issuing step S71 includes: a standby unlocking instruction sending step S711, in which the mobile terminal APP 600 sends a standby unlocking instruction to the Internet of Vehicles TSP platform 500; and a standby unlocking instruction forwarding step S712, in which the Internet of Vehicles TSP platform 500 forwards the received standby unlocking instruction to the on-board communication module 100.

[0086] In the backup unlock instruction receiving step S72 , the vehicle communication module 100 receives the backup unlock instruction. For example, in one example, the vehicle communication module 100 receives the backup unlock instruction forwarded by the vehicle network TSP platform 500 .

[0087] In the unlock control signal conversion step S75 , the in-vehicle communication module 100 converts the unlock control signal from an inactive waveform to an active waveform. Figure 10 is a schematic diagram of the waveform of the unlocking control signal. Figure 10As shown in the figure, in one exemplary embodiment, after receiving the backup unlock command, the on-board communication module 100 converts the unlock control signal waveform from the inactive state to the active state waveform. The unlock control signal is a PWM square wave. The inactive state waveform is as follows: within one cycle, the low level lasts for 10 milliseconds and the high level lasts for 20 milliseconds, with T1 (low level 10ms) + T2 (high level 20ms) forming one cycle. The active state waveform is the inverse of the inactive state waveform. Within one cycle, the low level lasts for 20 milliseconds and the high level lasts for 10 milliseconds, with T3 (low level 20ms) + T4 (high level 10ms) forming one cycle. The durations of the high and low levels can also be set to other values, and other waveforms, such as a sine wave, can also be used. The low level voltage range can be set to 0V to 1.2V, and the high level voltage range can be set to 9V to 16V. The high and low levels can also be set to any other suitable voltage range.

[0088] When both the following conditions are met: 1) the vehicle battery is low on power, and 2) a backup unlock command is received, the vehicle communication module 100 switches to powering the door lock controller via the backup battery 130. Figure 8 As shown, in an exemplary embodiment, before the unlock control signal conversion step S75, a backup unlock mode determination step S73 is included to determine whether the vehicle condition information indicates that the backup unlock mode is the vehicle battery is low. If the determination result is yes, a backup power supply step S74 is executed to close the door lock backup power supply circuit and start the backup power supply timer. For example, in an exemplary embodiment, if the value of the backup unlock mode included in the vehicle condition information is 0x01, it indicates that the battery 800 is low. Figure 2 As shown, the door lock backup power supply circuit switching management module 120 closes the door lock backup power supply circuit 180 and switches the door lock controller 200 to the backup battery 130, so that the vehicle-mounted communication module 100 provides backup power to the door lock controller 200 through the door lock backup power supply circuit 180. The value of the backup unlock mode can be stored or temporarily stored in the vehicle-mounted communication module 100 or sent together as a parameter of the backup unlock instruction. At the same time, a backup power supply timer is started to start timing, wherein the backup power supply timer can use a timer device or be defined as a timer variable. In this way, when the battery is low, the vehicle-mounted communication module provides backup power to the door lock controller, so that the vehicle door can still be opened when the battery is low.

[0089] In the unlock control signal transmission step S76, the vehicle-mounted communication module 100 transmits the unlock control signal to the door lock controller 200. For example, in one exemplary embodiment, the vehicle-mounted communication module 100 periodically transmits the aforementioned PWM square wave to the door lock controller 200. Under normal operation, the vehicle-mounted communication module 100 periodically transmits an inactive PWM square wave to the door lock controller 200. When remote backup unlocking is required, the vehicle-mounted communication module 100 periodically transmits an active PWM square wave to the door lock controller 200.

[0090] In the vehicle door unlocking step S77, the door lock controller 200 detects the unlocking control signal and triggers the vehicle door unlocking action. In one exemplary embodiment, the vehicle door unlocking step S77 includes: when the door lock controller 200 continuously detects that the unlocking control signal reaches a preset door opening control threshold a preset number of times, triggering the vehicle door unlocking action.

[0091] For example, in one exemplary embodiment, the door lock controller 200 can set its door opening control threshold based on the waveform range of the PWM square wave sent by the in-vehicle communication module 100. Based on the aforementioned PWM square wave, the door opening control threshold can be set to the duty cycle range of the PWM square wave. Taking into account time deviation, the door opening control threshold can be set to a duty cycle of 33.33% ± 5% of the PWM square wave. That is, when the duty cycle of the unlocking control signal detected by the door lock controller 200 is 33.33% ± 5%, the door opening action is triggered. Under normal circumstances, the detection range is 66.67% ± 5%, and the door opening action is not triggered.

[0092] To prevent false triggering, the number of detection times of the unlocking control signal can be set. For example, in an exemplary embodiment, the total number of times the unlocking control signal is detected since the first detection of the unlocking control signal is set. For example, the preset number is set to 10 times, that is, after receiving the backup unlocking instruction, the on-board communication module 100 continuously sends 10 active state PWM square waves, and the door lock controller 200 only needs to detect the active state PWM square wave 3 times in a row within the range of 10 consecutive detections of the PWM square wave, that is, detects the PWM square wave that reaches the door opening control threshold 3 times in a row, then the door lock controller 200 performs the backup unlocking.

[0093] To maintain the power of the backup battery, when the backup unlock command is received for a certain period of time, the door lock backup power supply circuit switching management module 120 controls the door lock backup power supply circuit 180 again to disconnect the door lock controller 200 from the backup battery 130. For example, in an exemplary embodiment, Figure 8As shown, the remote backup unlocking method further includes a door lock backup power supply circuit disconnection step S78, in which the door lock backup power supply circuit 180 is disconnected when the backup power supply timer reaches a preset timing threshold. The preset timing threshold can be set to 30 seconds, but is not limited thereto and can also be set to other values. For example, after the backup power supply timer reaches 30 seconds, the door lock backup power supply circuit 180 is disconnected and the backup power supply timer is reset.

[0094] like Figure 1 and 2 As shown, the vehicle-mounted communication module 100 is used to obtain vehicle condition information and report the vehicle condition information to the mobile terminal APP 600. When the backup unlocking function is enabled on the mobile terminal APP 600, the vehicle-mounted communication module 100 controls the execution of the backup unlocking. The vehicle-mounted communication module 100 controls the execution of the backup unlocking, including the vehicle-mounted communication module 100 receiving the backup unlocking instruction issued by the mobile terminal APP 600, generating an unlocking control signal, and sending the unlocking control signal. Before generating the unlocking control signal, it also includes determining whether the vehicle condition information indicates that the backup unlocking mode is a low-battery vehicle. If the judgment result is yes, the door lock backup power supply circuit is closed and a backup power supply timer is started. When the backup power supply timer reaches a preset timing threshold, the door lock backup power supply circuit is disconnected.

[0095] The in-vehicle communication module 100 includes an MCU 110, a backup unlock link 190 connected to the MCU 110, a door lock backup power supply circuit switching management module 120, and a door lock backup power supply circuit 180 connected to the door lock backup power supply circuit switching management module 120. The MCU 110 is configured to generate an unlock control signal and transmit the unlock control signal via the backup unlock link 190. It is also configured to set a backup power supply timer that determines the duration of the door lock backup power supply circuit 180's closure. The door lock backup power supply circuit switching management module 120 is configured to close and control the door lock backup power supply circuit 180, simultaneously start the backup power supply timer, and disconnect the door lock backup power supply circuit 180 when the backup power supply timer reaches a preset threshold. The preset threshold can be set to 30 seconds, but is not limited to other values and can also be set to other values. For example, after the backup power timer reaches 30 seconds, the door lock backup power supply circuit 180 is disconnected and the backup power supply timer is reset.

[0096] The door lock controller 200 is used to execute vehicle door unlocking. Specifically, it sets a door opening control threshold and periodically checks the unlocking control signal. When the unlocking control signal continuously detected by the door lock controller 200 reaches the door opening control threshold for a preset number of times, the vehicle door unlocking action is triggered.

[0097] like Figure 1 and 2As shown, in a remote backup unlocking system for a vehicle, the vehicle communication module 100 is used to obtain vehicle condition information.

[0098] In one exemplary embodiment, the vehicle-mounted communication module 100 is used to obtain the operating status of the battery 800. Specifically, the vehicle-mounted communication module 100 obtains the operating status of the battery 800 and determines whether the operating status is low. If the determination result is that the battery is not low, the vehicle condition information is defined as the backup unlock mode is normal, for example, the value of the backup unlock mode is set to: backup unlock mode = 0x00. If the determination result is low, the vehicle switches to the backup battery 130, and the vehicle condition information is defined as the backup unlock mode is low, for example, the value of the backup unlock mode is set to: backup unlock mode = 0x01.

[0099] In another exemplary embodiment, the vehicle communication module 100 is used to obtain the communication status of the vehicle CAN network, including the communication status between the vehicle communication module 100 and the gateway 400 and the communication status between the gateway 400 and the body control module 300 .

[0100] In one example, the gateway 400 periodically sends a first message to the vehicle-mounted communication module 100. The vehicle-mounted communication module 100 periodically obtains the first message sent from the gateway 400. If the first message is not obtained within a first preset period, the vehicle-mounted communication module 100 determines that a communication abnormality has occurred between the vehicle-mounted communication module 100 and the gateway 400, and defines the vehicle condition information as a vehicle communication failure in the backup unlock mode. For example, the value of the backup unlock mode is set to: backupunlockmode=0x02.

[0101] In another example, the body control module 300 periodically sends a second message to the gateway 400. The gateway 400 periodically obtains the second message sent by the body control module 300. If the gateway 400 does not obtain the second message sent by the body control module 300 within a second preset period, the gateway 400 sets the CAN signal to abnormal, for example, setting the CAN signal value GW_BCM_CommunicationStatus to 0x01. Otherwise, the gateway 400 sets the CAN signal value to normal, for example, setting the CAN signal value GW_BCM_CommunicationStatus to 0x00, and periodically sends the CAN signal value as part of the first message to the in-vehicle communication module 100. The on-board communication module 100 periodically obtains the first message sent from the gateway 400. If the on-board communication module 100 obtains the first message, it further determines the CAN signal value included in the first message. If the judgment result is that the CAN signal value is abnormal, for example, the CAN signal value GW_BCM_CommunicationStatus=0x01, it is determined that a communication abnormality occurs between the gateway 400 and the body control module 300, and the vehicle condition information is defined as the backup unlock mode is a vehicle communication failure, for example, the value of the backup unlock mode is set to: backup unlock mode=0x02; if the judgment result is that the CAN signal value is normal, for example, the CAN signal value GW_BCM_CommunicationStatus=0x00, the vehicle condition information is defined as the backup unlock mode is normal, for example, the value of the backup unlock mode is set to: backupunlock mode=0x00.

[0102] The vehicle-mounted communication module 100 transmits the aforementioned vehicle condition information to the connected vehicle TSP platform 500. Upon receiving the vehicle condition information transmitted by the vehicle-mounted communication module 100, the connected vehicle TSP platform 500 forwards the received vehicle condition information to the mobile terminal APP 600. The mobile terminal APP 600 receives the vehicle condition information forwarded by the connected vehicle TSP platform 500 and, if it determines that the vehicle condition information is abnormal and the vehicle doors are locked, displays the abnormality and / or function options on the mobile terminal APP 600.

[0103] For example, in one exemplary embodiment, when the mobile terminal app 600 determines that the vehicle door is locked, if the value of the backup unlock mode included in the vehicle condition information is 0x01, the mobile terminal app 600 determines that the vehicle battery 800 is low on power. The mobile terminal app 600 displays the aforementioned abnormality information and provides functional options, such as the displayed prompt message "The vehicle battery is low on power. Do you want to activate backup unlock?" If the value of the backup unlock mode included in the vehicle condition information is 0x02, the mobile terminal app 600 determines that the vehicle communication is abnormal. The mobile terminal app 600 displays the aforementioned abnormality information and provides functional options, such as the displayed prompt message "The vehicle communication is abnormal. Do you want to activate backup unlock?" At the same time, along with the aforementioned prompt information, the mobile terminal app 600 displays the functional options "Enable backup unlock" and "Disable backup unlock," or displays the functional options "Yes" and "No," but is not limited thereto.

[0104] When the backup unlock function is enabled on the mobile terminal APP 600, a backup unlock instruction is sent to the connected vehicle TSP platform 500. For example, in one exemplary embodiment, if the function option selected on the mobile terminal APP 600 is "Do not enable backup unlock" or "No", the mobile terminal APP 600 does not perform any processing; if the function option selected on the mobile terminal APP 600 is "Enable backup unlock" or "Yes", the backup unlock instruction is sent to the connected vehicle TSP platform 500.

[0105] When the Internet of Vehicles TSP platform 500 receives the standby unlocking instruction sent by the mobile terminal APP 600 , it forwards the received standby unlocking instruction to the in-vehicle communication module 100 .

[0106] The in-vehicle communication module 100 receives the standby unlock instruction forwarded by the vehicle networking TSP platform 500 , and after receiving the standby unlock instruction, the MCU 110 converts the waveform of the unlock control signal in the inactive state into the waveform of the active state.

[0107] like Figure 10 As shown, in one exemplary embodiment, the unlock control signal is a PWM square wave. The waveform in the inactive state is: within one cycle, the low level lasts for 10 milliseconds and the high level lasts for 20 milliseconds; the waveform in the active state is: within one cycle, the low level lasts for 20 milliseconds and the high level lasts for 10 milliseconds. The durations of the high and low levels can also be set to other values, and other waveforms, such as a sine wave, can also be used. The voltage range of the low level can be set to 0V to 1.2V, and the voltage range of the high level can be set to 9V to 16V. The high and low levels can also be set to any other suitable voltage range.

[0108] The onboard communication module 100 transmits an unlock control signal to the door lock controller 200. Specifically, the MCU 110 generates an unlock control signal and transmits it to the door lock controller 200 via the backup unlock link 190. When the door lock controller 200 continuously detects that the unlock control signal sent by the MCU 110 reaches a preset door opening control threshold a predetermined number of times, the vehicle door unlocking action is triggered. For example, the door opening control threshold can be set to a duty cycle range of a PWM square wave. To account for time deviation, the door opening control threshold can be set to a duty cycle of 33.33% ± 5%. That is, when the door lock controller 200 detects a duty cycle of 33.33% ± 5%, the door opening action is triggered. Under normal circumstances, the detection range is 66.67% ± 5%, which does not trigger the door opening action.

[0109] To prevent false triggering, the number of detection times of the unlocking control signal can be set. For example, in an exemplary embodiment, the total number of times the unlocking control signal is detected since the first detection of the unlocking control signal is set. For example, the preset number is set to 10 times, that is, when the backup unlocking is enabled, the on-board communication module 100 continuously sends 10 activated PWM square waves, and the door lock controller 200 only needs to detect the activated PWM square wave 3 times in a row within the range of detecting 10 PWM square waves, that is, detects the PWM square wave that reaches the door opening control threshold 3 times in a row, then the door lock controller 200 performs the backup unlocking.

[0110] In an exemplary embodiment, when the on-board communication module 100 receives a backup unlock instruction and the vehicle condition information indicates that the backup unlock mode is a low-battery vehicle, that is, when the value of the unlock mode backupunlock mode included in the received vehicle condition information is 0x01, the door lock backup power supply circuit switching management module 120 closes the door lock backup power supply circuit 180 to provide backup power to the door lock controller 200, and simultaneously starts the backup power supply timer to start timing. When the backup power supply timer reaches a preset timing threshold, the door lock backup power supply circuit 180 is disconnected, thereby stopping the provision of backup power to the door lock controller 200. The preset timing threshold can be set to 30s, but there is no limitation, and it can also be set to other values. For example, after the backup power supply timer reaches 30s, the door lock backup power supply circuit 180 is disconnected and the backup power supply timer is reset.

[0111] The disclosed solution utilizes the backup battery that is standard with current onboard communication modules and redesigns the power management strategy for the onboard communication module. When powered by the vehicle battery, the backup battery not only provides power to the onboard communication module, maintaining its normal operation, but also to the door lock control system. This allows remote door unlocking even when powered by the vehicle battery, eliminating the need for a traditional mechanical key. Because the body control module and the onboard communication module are not directly connected, the onboard communication module cannot directly monitor the communication status of the body control module. The disclosed solution leverages the vehicle's existing architecture and network communication scheme to report the body control module's communication status to the onboard communication module by adding a CAN signal value. Furthermore, by adding vehicle status information for reporting the backup unlock mode, the disclosed solution leverages the existing vehicle status data reporting path to promptly alert the user to the current vehicle status and whether to enable backup unlocking. Furthermore, remote door unlocking is still possible in the event of a vehicle key system failure, such as a gateway or body control module failure, or abnormal vehicle CAN network communication. In addition, the technical solution disclosed in the present invention greatly improves the success rate of unlocking the vehicle door by adding a hard-wired connection line between the door lock controller and the vehicle-mounted communication module to transmit the unlocking control signal.

[0112] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0113] The series of detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present disclosure. They are not intended to limit the scope of protection of the present disclosure. Any equivalent implementation schemes or changes that do not depart from the technical spirit of the present disclosure, such as the combination, division or repetition of features, should be included in the scope of protection of the present disclosure.

Claims

1. A remote standby unlocking method for a vehicle, the vehicle comprising an onboard communication module (100), the onboard communication module (100) being capable of communicating with a mobile terminal APP (600), the remote standby unlocking method comprising: Vehicle condition acquisition step (S20): the vehicle communication module (100) acquires vehicle condition information; Vehicle condition reporting step (S30): the vehicle-mounted communication module (100) reports the vehicle condition information to the mobile terminal APP (600); Vehicle condition judgment step (S40): the mobile terminal APP (600) judges whether the reported vehicle condition information is abnormal; If the result of the vehicle condition determination step (S40) is abnormal, the process proceeds to the vehicle door state determination step (S50) to determine whether the current state of the vehicle door is a locked state; If the result of the vehicle door state determination step (S50) is that the vehicle door is in a locked state, entering a prompt / selection step (S60), and displaying the abnormality and / or function options on the mobile terminal APP (600); and The standby unlocking step (S70) is executed. When the standby unlocking function is selected to be enabled on the mobile terminal APP (600), the vehicle-mounted communication module (100) controls the execution of the standby unlocking.

2. The remote standby unlocking method according to claim 1, wherein: The vehicle has a storage battery (800), the vehicle-mounted communication module (100) has a backup battery (130), and the vehicle condition acquisition step (S20) includes: A battery status acquisition step (S21), wherein the vehicle-mounted communication module (100) acquires the working status of the battery (800); and In a battery status judgment step (S22), the vehicle-mounted communication module (100) judges whether the working status of the battery (800) is low on power. If the result of the judgment is that the battery is not low, the vehicle condition information is defined as the standby unlocking mode is normal; If the judgment result is that the battery is low, the battery is switched to the backup battery (130), and the vehicle condition information is defined as the backup unlocking mode is low battery of the vehicle battery.

3. The remote standby unlocking method according to claim 1, wherein: The vehicle further comprises a gateway (400), and the vehicle condition acquisition step (S20) comprises: a first message sending step (S24), the gateway (400) periodically sending a first message to the vehicle-mounted communication module (100); and In a first message acquisition step (S25), the vehicle-mounted communication module (100) periodically acquires the first message from the gateway (400), If the first message is not obtained within a first preset period, the vehicle condition information is defined as the standby unlocking mode being a vehicle communication failure. If the first message is obtained within a first preset period, execute: a CAN signal value determination step, determining the CAN signal value included in the first message, If the judgment result is that the CAN signal value is abnormal, the vehicle condition information is defined as the standby unlocking mode is a vehicle communication failure. If the judgment result is that the CAN signal value is normal, the vehicle condition information is defined as the standby unlocking mode is normal.

4. The remote standby unlocking method according to claim 3, wherein the vehicle further comprises a body control module (300), characterized in that: The first message sending step (S24) further includes: a second message sending step (S241), the body control module (300) periodically sending a second message to the gateway (400); and In a second message acquisition step (S242), the gateway (400) periodically acquires the second message, and when the gateway (400) fails to acquire the second message within a second preset period, sets the CAN signal value as abnormal and periodically sends the CAN signal value as part of the first message to the on-board communication module (100).

5. The remote standby unlocking method according to claim 1, wherein the vehicle communication module (100) is communicably connected to the vehicle network TSP platform (500), and the vehicle network TSP platform (500) is communicably connected to the mobile terminal APP (600), characterized in that: The vehicle condition reporting step (S30) includes: A vehicle condition information sending step (S31), wherein the vehicle-mounted communication module (100) sends the vehicle condition information to the vehicle network TSP platform (500); a vehicle condition information forwarding step (S32), wherein the vehicle network TSP platform (500) forwards the received vehicle condition information to the mobile terminal APP (600); and In a vehicle condition information receiving step (S33), the mobile terminal APP (600) receives the vehicle condition information forwarded by the Internet of Vehicles TSP platform (500).

6. The remote backup unlocking method according to claim 1, wherein the vehicle further comprises a door lock controller (200), characterized in that: The step of executing the standby unlocking step (S70) includes: A standby unlocking instruction issuing step (S71), wherein the mobile terminal APP (600) issues a standby unlocking instruction to the vehicle-mounted communication module (100); A standby unlocking instruction receiving step (S72), the vehicle-mounted communication module (100) receives the standby unlocking instruction; an unlocking control signal conversion step (S75), wherein the vehicle-mounted communication module (100) converts the unlocking control signal from a waveform in an inactive state to a waveform in an active state; an unlocking control signal sending step (S76), wherein the vehicle-mounted communication module (100) sends the unlocking control signal to the door lock controller (200); and The vehicle door unlocking step (S77) is executed, and the door lock controller (200) detects the unlocking control signal and triggers the vehicle door unlocking action.

7. The remote standby unlocking method according to claim 6, wherein: The step of issuing the standby unlock instruction (S71) includes: A standby unlocking instruction sending step (S711), wherein the mobile terminal APP (600) sends the standby unlocking instruction to the Internet of Vehicles TSP platform (500); and In a standby unlocking instruction forwarding step (S712), the Internet of Vehicles TSP platform (500) forwards the received standby unlocking instruction to the on-board communication module (100).

8. The remote standby unlocking method according to claim 6, wherein: Before the unlocking control signal conversion step (S75), a standby unlocking mode judgment step (S73) is also included to judge whether the vehicle condition information indicates that the standby unlocking mode is the vehicle battery being low on power. If the judgment result is yes, a standby power supply step (S74) is executed to close the door lock standby power supply circuit and start a standby power supply timer to start timing.

9. The remote standby unlocking method according to claim 8, wherein: Also includes: The door lock backup power supply circuit disconnection step (S78) is to disconnect the door lock backup power supply circuit when the backup power supply timer reaches a preset timing threshold.

10. The remote standby unlocking method according to claim 6, wherein: The door unlocking step (S77) is specifically as follows: When the door lock controller (200) continuously detects that the unlocking control signal reaches a preset door opening control threshold value for a preset number of times, a vehicle door unlocking action is triggered.

11. A vehicle-mounted communication module (100), the vehicle-mounted communication module (100) being capable of communicating with a mobile terminal APP (600), characterized in that: The vehicle-mounted communication module (100) is used for: Acquiring vehicle condition information and reporting the vehicle condition information to a mobile terminal APP (600); when the standby unlocking function is selected to be enabled on the mobile terminal APP (600), the vehicle-mounted communication module (100) controls the execution of the standby unlocking, wherein: The vehicle-mounted communication module (100) controls the execution of standby unlocking, including: the vehicle-mounted communication module (100) receives the standby unlocking instruction sent by the mobile terminal APP (600), generates an unlocking control signal, and sends the unlocking control signal, and Before generating the unlocking control signal, it also includes judging whether the vehicle condition information indicates that the backup unlocking mode is the vehicle battery being low on power. If the judgment result is yes, the door lock backup power supply circuit is closed, and a backup power supply timer is started to start timing. When the backup power supply timer reaches a preset timing threshold, the door lock backup power supply circuit is disconnected.

12. The vehicle-mounted communication module (100) according to claim 11, characterized in that: It includes: An MCU (110) is configured to generate the unlock control signal and convert a waveform of the unlock control signal in an inactive state into a waveform in an active state; A standby unlocking link (190), connected to the MCU (110) and used for transmitting the unlocking control signal; A door lock backup power supply circuit (180), the MCU (110) is used to set a backup power supply timer for timing the closing duration of the door lock backup power supply circuit (180); and A door lock standby power supply circuit switching management module (120) is connected to the door lock standby power supply circuit (180) and is used to close the door lock standby power supply circuit (180), simultaneously start the standby power supply timer to start timing, and when the standby power supply timer reaches a preset timing threshold, disconnect the door lock standby power supply circuit (180).

13. Door lock controller (200), characterized in that, The door lock controller (200) is used to set a door opening control threshold and periodically check an unlocking control signal, and when the number of times the unlocking control signal continuously detected by the door lock controller (200) reaches the door opening control threshold reaches a preset number, a vehicle door unlocking action is triggered.

14. A remote backup unlocking system for a vehicle, characterized in that It comprises an on-vehicle communication module (100) as claimed in claim 12 and a door lock controller (200) as claimed in claim 13, wherein: The door lock controller (200) is connected to the MCU (110) via the backup unlock link (190), and the MCU (110) can transmit the unlock control signal to the door lock controller (200) via the backup unlock link (190); The door lock controller (200) is connected to the door lock standby power supply circuit switching management module (120) via the door lock standby power supply circuit (180). When the vehicle-mounted communication module (100) receives a standby unlock instruction and the vehicle condition information indicates that the standby unlock mode is a vehicle battery low, the door lock standby power supply circuit switching management module (120) closes the door lock standby power supply circuit (180) to provide standby power to the door lock controller (200), and simultaneously starts the standby power supply timer to start timing. When the standby power supply timer reaches a preset timing threshold, the door lock standby power supply circuit (180) is disconnected, thereby stopping providing standby power to the door lock controller (200).

15. The remote backup unlocking system according to claim 14, wherein: Also includes: A body control module (300), a gateway (400), a vehicle networking TSP platform (500) and a mobile terminal APP (600), wherein: The vehicle-mounted communication module (100) is communicatively connected to the gateway (400) and the vehicle networking TSP platform (500), and is used to obtain the vehicle condition information and send the vehicle condition information to the vehicle networking TSP platform (500), and receive the standby unlocking instruction forwarded by the vehicle networking TSP platform (500), generate an unlocking control signal, and send the unlocking control signal to the door lock controller (200); The vehicle body control module (300) is communicatively connected to the gateway (400) and is used to periodically send a second message to the gateway (400); The gateway (400) is used to periodically send a first message to the on-board communication module (100); and is used to periodically obtain the second message sent by the body control module (300), and when the second message sent by the body controller (300) is not obtained within a second preset period, set the CAN signal value as abnormal, and periodically send the CAN signal value as part of the first message to the on-board communication module (100); The vehicle networking TSP platform (500) is communicatively connected to the mobile terminal, and when it receives the vehicle condition information sent by the vehicle communication module (100), it forwards the received vehicle condition information to the mobile terminal APP (600); and when it receives the standby unlocking instruction sent by the mobile terminal APP (600), it forwards the received standby unlocking instruction to the vehicle communication module (100); The mobile terminal APP (600) is used to receive the vehicle condition information forwarded by the vehicle networking TSP platform (500) and, when it is determined that the vehicle condition information is abnormal, if the vehicle door is in a locked state, the abnormality and / or function options are displayed on the mobile terminal APP (600), and when the standby unlocking function is selected to be enabled on the mobile terminal APP (600), the standby unlocking instruction is sent to the vehicle networking TSP platform (500).

16. The remote backup unlocking system according to claim 15, wherein: The vehicle condition information acquired by the on-board communication module (100) includes: periodically acquiring a first message sent from the gateway (400); if the first message is not acquired within a first preset period, defining the vehicle condition information as a standby unlocking mode being a vehicle communication failure; if the first message is acquired, determining a CAN signal value included in the first message; if the determination result is that the CAN signal value is abnormal, defining the vehicle condition information as a standby unlocking mode being a vehicle communication failure; and if the determination result is that the CAN signal value is normal, defining the vehicle condition information as a standby unlocking mode being normal.

17. The remote backup unlocking system according to claim 15, wherein the vehicle further comprises a battery (800), characterized in that: The vehicle-mounted communication module (100) acquires vehicle condition information by: acquiring the working state of the battery (800), and determining whether the working state is low-power; if the determination result is that the battery is not low-power, defining the vehicle condition information as a standby unlocking mode being normal; and if the determination result is low-power, switching to the standby battery (130), and defining the vehicle condition information as a standby unlocking mode being a vehicle battery low-power.

18. The remote backup unlocking system according to claim 15, wherein: The vehicle-mounted communication module (100) generates an unlocking control signal, comprising: converting a waveform of the unlocking control signal in an inactive state into a waveform in an active state.

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