Method and system for emergency unlocking of automobile door

Abstract

The invention belongs to the technical field of vehicles, and relates to an emergency unlocking method and system for an automobile door. By acquiring the vehicle speed, the vehicle door locking state, the vehicle machine large screen display state and the vehicle machine state in real time, comprehensive information is provided for subsequent judgment, and misjudgment of a single signal is avoided; when the vehicle speed is larger than or equal to the threshold speed and the vehicle door locking state is locked, vehicle machine state judgment is started, false triggering during parking can be avoided through setting of the vehicle speed threshold value, in addition, activation is conducted only when necessary, and system power consumption and computing resource occupation are reduced; if the vehicle machine large screen display state is abnormal and the vehicle machine state is abnormal, a vehicle machine state abnormal signal is sent to a BCM controller through a VCU controller; and after the BCM controller receives the abnormal state signal, a vehicle door unlocking instruction is generated, and the vehicle door unlocking instruction is sent to a vehicle door lock to execute unlocking. According to the invention, the vehicle door can be automatically unlocked under the abnormal condition of the vehicle machine, and a driver and passengers are assisted to quickly escape from danger in emergency.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles and relates to a method and system for emergency unlocking of a vehicle door. Background Art

[0002] Generally, it is rare for a vehicle to freeze or go black during driving, but if a small probability situation occurs, it will cause certain psychological pressure on the driver and passengers. Especially for existing intelligent driving vehicles, many functions are integrated into the vehicle system. When the vehicle system freezes or goes black, the driver and passengers cannot operate the large screen, which will cause serious driving safety hazards. If an accident or accident occurs during driving, the door cannot be opened, resulting in the inability of the occupants to leave the car, and the external rescue personnel cannot open the door for rescue in a short time.

[0003] At present, many intelligent cars on the market have integrated the door lock and unlock functions into the large screen of the car computer. If the car computer freezes, how to open the door from inside or outside the car becomes a problem. Most of the existing technologies use the door lock device, or restart the car computer through various operations to restore the large screen operation when the car computer is in an abnormal state, but there is no relevant method to unlock the door when the car computer is in an abnormal state. Summary of the invention

[0004] The purpose of the present invention is to provide a method and system for emergency unlocking of automobile doors to solve the technical problem that the doors cannot be unlocked when the vehicle computer is abnormal. The present invention can automatically unlock the doors when the vehicle computer is abnormal, and assist the driver and passengers to escape quickly in an emergency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention discloses a method for emergency unlocking of a vehicle door, comprising the following steps: Obtain vehicle speed, door lock status, vehicle screen display status and vehicle status; When the vehicle speed is greater than or equal to the threshold speed and the door is locked, the vehicle computer status judgment is started; If the vehicle computer large screen displays abnormal status and the vehicle computer status is abnormal, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller; After the BCM controller receives the abnormal status signal, it generates a door unlock command and sends the door unlock command to the door lock to execute unlocking.

[0006] Furthermore, the threshold speed is 15 km / h.

[0007] Furthermore, the abnormal display status of the vehicle computer large screen includes: the vehicle computer large screen displays a black screen or is stuck.

[0008] Furthermore, if the car does not have a speed-dependent automatic locking function, and the door locks are manually locked by the driver, the vehicle computer status judgment is initiated.

[0009] Furthermore, if the vehicle computer large screen display state is abnormal and the vehicle computer state is abnormal, a vehicle computer state abnormality signal is sent to the BCM controller through the VCU controller, as follows: If the vehicle computer large screen displays an abnormal state, the vehicle computer state is determined; If the vehicle computer is in an abnormal state, determine whether the vehicle computer can return to normal within the threshold time; If the vehicle computer status cannot return to normal within the threshold time, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller.

[0010] Furthermore, the abnormal vehicle computer status includes vehicle computer host communication interruption, vehicle computer host freeze, and vehicle computer host error and no response.

[0011] Furthermore, when the abnormal vehicle computer status is that the vehicle computer host is frozen or the vehicle computer host has an error and is unresponsive, a vehicle computer status abnormality signal is immediately sent to the BCM controller through the VCU controller.

[0012] Furthermore, after the door lock is unlocked, an unlocking status prompt is displayed on the instrument screen and continues until the door is opened or the vehicle is turned off.

[0013] Furthermore, after the door lock is unlocked, a buzzer and a warning light are triggered, and an unlocking alarm is sent to the user's mobile device.

[0014] In a second aspect, the present invention further discloses a system for emergency unlocking of a vehicle door, comprising: Status acquisition module: used to obtain vehicle speed, door lock status, vehicle screen display status and vehicle status; Vehicle speed judgment module: used to start vehicle computer status judgment when the vehicle speed is greater than or equal to the threshold speed and the door is locked; Vehicle computer status judgment module: used to send a vehicle computer status abnormal signal to the BCM controller through the VCU controller if the vehicle computer large screen display status is abnormal and the vehicle computer status is abnormal; Door unlocking module: used to generate a door unlocking command after the BCM controller receives an abnormal status signal, and send the door unlocking command to the door lock to execute unlocking.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention collects data in real time, integrates vehicle speed, door lock status and the operating status of the vehicle system, provides comprehensive information for subsequent judgment, and avoids single signal misjudgment; when the vehicle speed is greater than or equal to the threshold speed and the door lock status is locked, the vehicle status judgment is started, and the setting of the vehicle speed threshold can avoid false triggering when parking. In addition, it is only activated when necessary to reduce system power consumption and computing resource occupation; if the vehicle large screen display status is abnormal and the vehicle status is abnormal, the vehicle status abnormality signal is sent to the BCM controller (body control module) through the VCU controller (vehicle controller), and the signal is transmitted through the VCU as the center, and its high authority is used to ensure the priority of the instruction, so as to avoid the BCM from missing the instruction due to local failure; after the BCM controller receives the abnormal status signal, it generates the door unlocking instruction, and sends the door unlocking instruction to the door lock to execute unlocking. The present invention provides an automatic unlocking path based on the abnormal status signal of the vehicle, and the unlocking instruction will still be executed even if the vehicle is still driving, giving priority to the emergency evacuation needs of the occupants and increasing the safety protection level. The present invention can automatically unlock the vehicle doors when the vehicle computer is abnormal, and assist the driver and passengers to escape quickly in an emergency.

[0016] The present invention judges the state of the vehicle computer after the large-screen display state of the vehicle computer is abnormal, and avoids directly triggering emergency unlocking due to a single display problem by distinguishing between interface layer failures and system layer failures, thereby reducing the misjudgment rate, and only starts deep detection of the vehicle computer when the interface is abnormal, thereby avoiding continuous occupation of hardware resources.

[0017] After the vehicle computer state is abnormal, the present invention determines whether the vehicle computer can return to normal within a threshold time, allowing the vehicle computer system to attempt self-repair within the threshold time, thereby avoiding unnecessary unlocking actions triggered by instantaneous faults.

[0018] After confirming that the vehicle computer is in a persistent fault, the present invention triggers emergency unlocking to ensure that the occupants can still escape when the vehicle computer completely fails.

[0019] The system of the present invention includes: a state acquisition module, a vehicle speed judgment module, a vehicle computer state judgment module and a door unlocking module; the state acquisition module is used to obtain the vehicle speed, the door lock state, the vehicle computer large screen display state and the vehicle computer state; the vehicle speed judgment module is used to start the vehicle computer state judgment when the vehicle speed is greater than or equal to the threshold speed and the door lock state is locked; the vehicle computer state judgment module is used to send a vehicle computer state abnormality signal to the BCM controller through the VCU controller if the vehicle computer large screen display state is abnormal and the vehicle computer state is abnormal; the door unlocking module is used to generate a door unlocking instruction after the BCM controller receives the state abnormality signal, and send the door unlocking instruction to the door lock to execute unlocking. Each module cooperates with each other, and can automatically unlock the door when the vehicle computer is abnormal, and assist the driver and passengers to escape quickly in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a flow chart of a method according to an embodiment of the present invention; Figure 2 is a hardware structure diagram of an embodiment of the present invention; Figure 3 is a method flow chart of another embodiment of the present invention; Figure 4 It is a system module diagram of the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first", "second", etc. in the specification of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 4 The present invention discloses a method for emergency unlocking of a vehicle door, comprising the following steps: S1, obtains vehicle speed, door lock status, vehicle computer large screen display status and vehicle computer status, collects data in real time, and provides comprehensive information for subsequent judgment by integrating vehicle speed, door lock status and vehicle computer system operation status to avoid misjudgment of single signal; S2: When the vehicle speed is greater than or equal to the threshold speed and the door is locked, the vehicle computer status judgment is started. The setting of the vehicle speed threshold can avoid false triggering when parking. In addition, it is only activated when necessary to reduce system power consumption and computing resource usage; S3: If the vehicle computer large screen displays abnormal status and the vehicle computer status is abnormal, the vehicle computer status abnormality signal is sent to the BCM controller (body control module) through the VCU controller (vehicle control unit). The signal is transmitted through the VCU as the hub, and its high authority is used to ensure the priority of the command to avoid the BCM missing the command due to local failure. S4, after the BCM controller receives the abnormal status signal, it generates a door unlock command and sends the door unlock command to the door lock to execute unlocking. In addition to the traditional physical button / central control screen control, the present invention provides an automatic unlocking path based on the abnormal status signal of the vehicle computer to increase the level of safety protection. Compared with physical buttons, it avoids the situation where the physical buttons cannot open the door after an emergency occurs, that is, automatic unlocking is triggered, and it also solves the problem that the door cannot be unlocked due to an abnormal central control screen. In addition, even if the vehicle is still moving, the unlock command will still be executed, giving priority to the emergency evacuation needs of the occupants and increasing the level of safety protection. The present invention can automatically unlock the door in the event of an abnormality in the vehicle computer, assisting the driver and passengers to escape quickly in an emergency.

[0024] Embodiment 1: See also Figure 4 This embodiment discloses a method for emergency unlocking of a vehicle door, comprising the following steps: S1, obtain vehicle speed, door lock status, vehicle computer large screen display status and vehicle computer status; S2, when the vehicle speed is greater than or equal to the threshold speed and the door is locked, start the vehicle computer status judgment; If the car does not have the function of automatic locking according to vehicle speed, and the door locks are manually locked by the driver, the vehicle computer status judgment is started.

[0025] Preferably, the threshold speed is 15 km / h.

[0026] S3: If the vehicle computer large screen display status is abnormal and the vehicle computer status is abnormal, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller, as follows: If the large-screen display status of the vehicle computer is abnormal, the vehicle computer status will be judged. By distinguishing between interface layer failures (only large-screen display abnormalities, such as black screen, freeze) and system layer failures, emergency unlocking directly triggered by a single display problem (such as loose screen cables) can be avoided to reduce the misjudgment rate. In addition, deep detection of the vehicle computer will only be started when the interface is abnormal to avoid continuous occupation of hardware resources.

[0027] If the vehicle computer status is abnormal, determine whether the vehicle computer can return to normal within the threshold time, and allow the vehicle computer system to attempt self-repair (such as process restart, service reconnection) within the threshold time to avoid instantaneous faults (such as voltage fluctuations, software deadlock) triggering unnecessary unlocking actions.

[0028] Preferably, the threshold time is usually set between 5 and 10 seconds, and the threshold time can be dynamically adjusted according to the historical fault data of the vehicle computer (such as frequent short-term faults extending the threshold), balancing the response speed and false alarm suppression. If the vehicle computer recovers within the threshold time, only the fault log is recorded without triggering unlocking, preventing accidental opening of the door due to occasional faults.

[0029] If the vehicle computer status cannot return to normal within the threshold time, the abnormal vehicle computer status signal is sent to the BCM controller through the VCU controller. After confirming that the vehicle computer is in a persistent fault (such as hardware damage, system crash), the emergency unlocking is triggered to ensure that the occupants can still escape when the vehicle computer fails completely. As the vehicle control hub, the VCU controller uses hard-wired signals or high-priority CAN messages to send instructions, bypassing the vehicle computer communication link that may be paralyzed, and ensuring reliable reception by the BCM controller.

[0030] Preferably, the abnormal display status of the vehicle computer large screen includes: the vehicle computer large screen displays a black screen or is stuck.

[0031] Preferably, the abnormal vehicle computer status includes vehicle computer host communication interruption, vehicle computer host freeze, and vehicle computer host error and no response.

[0032] Preferably, when the vehicle computer status abnormality is that the vehicle computer host freezes or the vehicle computer host fails and does not respond, a vehicle computer status abnormality signal is immediately sent to the BCM controller through the VCU controller.

[0033] S4, after the BCM controller receives the abnormal status signal, it generates a door unlocking command and sends the door unlocking command to the door lock to execute unlocking.

[0034] Preferably, after the door lock is unlocked, an unlocking status prompt is displayed on the instrument screen and continues until the door is opened or the vehicle is turned off.

[0035] Preferably, after the vehicle door lock is unlocked, a buzzer and a warning light are triggered, and an unlocking alarm is sent to the user's mobile device.

[0036] Embodiment 2: See also Figure 1 and Figure 3 This embodiment discloses a method for emergency unlocking of a vehicle door, comprising the following steps: When the vehicle speed is greater than or equal to 15km / h and the door is locked, the emergency unlocking procedure of the vehicle door takes effect and the vehicle computer status judgment is started; When the vehicle computer screen displays a black screen or freezes, the VCU controller is triggered to determine whether the vehicle computer host is dead or the communication is interrupted; When the BCM controller receives the information from the VCU controller that the vehicle host has crashed or has an error and is unresponsive, the BCM controller sends an unlock signal to the door lock to notify the door lock to unlock.

[0037] Preferably, when the vehicle speed is equal to 0 km / h or the vehicle is not started, the emergency unlocking of the vehicle door will not be activated; When the vehicle has an automatic locking function at speed, and the speed is less than 15km / h, if the door locks are not automatically locked, the emergency unlocking procedure of the car door will not take effect; When the vehicle has an automatic locking function at speed, and the speed is less than 15km / h, the door locks are not automatically locked, and the driver manually controls the door locks, the emergency unlocking procedure of the car door will be activated; When the vehicle has the function of automatic locking at vehicle speed, when the vehicle speed is greater than or equal to 15km / h, the door locks will automatically lock and the emergency unlocking procedure of the vehicle door will be activated; When the vehicle does not have the speed automatic locking function, the driver does not manually lock the door, the door is in the unlocked state, and the emergency unlocking procedure of the car door will not take effect; When the vehicle does not have the speed automatic locking function, the driver manually locks the door and the emergency unlocking procedure of the car door takes effect and is activated; Preferably, during normal driving of the vehicle, when the vehicle computer large screen displays normally, the door emergency unlocking program will not be activated and take effect; When the vehicle computer screen displays a black screen or freezes, the communication signal between the background vehicle computer host and the VCU controller is abnormal and an error occurs, triggering the VCU controller to determine whether the vehicle computer host is dead or the communication is interrupted and whether it can be restored to normal in a short time; When the signal shows that the error content is that the system has crashed, the emergency door unlocking procedure takes effect; When the signal shows that the error content is just a general error, and the vehicle computer signal returns to normal after a certain period of time, the emergency unlocking procedure of the car door will not take effect; Preferably, when the BCM controller receives a signal from the VCU controller that the vehicle host has crashed or has an error and is unresponsive, the BCM controller sends an unlock signal to the door lock, notifying the door lock to unlock. After successful unlocking, the door will not open directly. If the door needs to be opened, the driver and passengers must open it manually.

[0038] Preferably, when the door is unlocked successfully, an unlocked door icon or text prompt is displayed on the instrument screen to inform the driver that the door is currently unlocked; Embodiment three: This embodiment discloses a method for emergency unlocking of a vehicle door. Figure 2The structure diagram of the embodiment of emergency unlocking of the car door is shown in FIG. 01, which includes a large screen 01, a VCU controller 02, a BCM controller 03, an instrument screen 04, a door lock 05, a car host 06, and a car door 07. The instrument screen 04 is installed on the instrument panel in front of the main driver's seat in the car, so that the driver can observe the vehicle body status in time. The large screen 01 is installed in the middle position or the middle + right position of the instrument panel in front of the main driver's seat, so that the driver and the co-driver can perform various operations on the large screen 01. The installation positions of the VCU controller 02 and the BCM controller 03 are based on the actual layout of the vehicle. They are installed in front of the instrument panel in the car. They cannot be observed at ordinary times and can only be seen after the relevant interior decoration is removed. The car door lock 05 is installed in the middle position of the edge of the car door and is matched with the car body edge lock buckle. The car host 06 is installed in the middle position or the right position inside the front instrument panel. It cannot be observed at ordinary times and can only be seen after the relevant interior decoration is removed. The car door 07 is an intelligent unlocking door. The inside of the car door 07 is opened by clicking the intelligent door lock button.

[0039] like Figure 1 As shown, when the vehicle speed is greater than or equal to 15 km / h and the door 07 is locked, the emergency unlocking procedure of the vehicle door takes effect; When the vehicle speed = 0km / h or the vehicle is not started, the emergency unlocking procedure of the car door will not be activated; When the vehicle has the function of automatic locking at speed, and the speed is less than 15km / h, if the door lock 05 does not lock automatically, the emergency unlocking procedure of the car door will not take effect; When the vehicle has the function of automatic locking at speed, and the speed is less than 15km / h, the door lock 05 does not lock automatically, and the driver manually controls the locking to lock the door, the emergency unlocking procedure of the car door will be activated; When the vehicle has the function of automatic locking at speed, when the speed is greater than or equal to 15km / h, the door lock 05 will automatically lock, and the emergency unlocking procedure of the car door will be activated; When the vehicle does not have the speed automatic locking function, the driver does not manually lock the door, the door is in the unlocked state, and the emergency unlocking procedure of the car door will not take effect; When the vehicle does not have the speed automatic locking function, the driver manually locks the door and the emergency unlocking procedure of the car door takes effect and is activated; During normal driving of the vehicle, when the vehicle large screen 01 displays normally, this function will not be activated; When the car computer screen 01 displays a black screen or is stuck, the communication signal between the background car computer host 06 and the VCU controller 02 is abnormal and an error occurs, triggering the VCU controller 02 to determine whether the car computer host 06 is dead or the communication is interrupted and whether it returns to normal in a short time. When the signal shows that the error content is dead, the car door emergency unlocking program takes effect. When the signal shows that the error content is just a general error, and the car computer signal returns to normal within the specified time, the car door emergency unlocking program will not take effect; When the BCM controller 03 receives the information from the VCU controller 02 that the vehicle host 06 has crashed or has an error and is not responding, the BCM controller 03 sends an unlocking signal to the door lock 05 to notify the door lock 05 to unlock. After the unlocking is successful, the door 07 will not be opened directly. If the door 07 needs to be opened, the driver or passenger needs to open it manually from the inside or an outsider needs to open it through the outside door handle; When the door 07 is unlocked successfully, the BCM controller 03 simultaneously displays an unlocked icon or text prompt of the door 07 on the instrument screen 04 to inform the driver that the door 07 is currently unlocked; Compared with the prior art, the present invention has the following advantages: 1. The present invention does not require any new parts, and software development is carried out based on existing parts, without increasing the cost of purchasing new parts.

[0040] 2. The present invention can be used as a supplement to the automatic unlocking of vehicle doors in case of collision, and can be used to perform emergency unlocking of vehicle doors when the vehicle computer freezes and the screen goes black, causing the vehicle door locks to be locked and unable to be opened, without any collision accident.

[0041] 3. The present invention can help people on board to evacuate the vehicle quickly under certain circumstances.

[0042] 4. The present invention is effective when the intelligent vehicle meets the conditions that the vehicle speed is greater than or equal to 15 km / h, the vehicle is locked, or the vehicle computer suddenly freezes or the screen goes black, which is beneficial to driving safety.

[0043] Based on the above structure, the present invention also discloses a system for emergency unlocking of a vehicle door, see Figure 4 , including: a state acquisition module, a vehicle speed judgment module, a vehicle computer state judgment module and a door unlocking module; Status acquisition module: used to obtain vehicle speed, door lock status, vehicle computer large screen display status and vehicle computer status. By collecting data in real time and integrating vehicle speed, door lock status and vehicle computer system operating status, it provides comprehensive information for subsequent judgment and avoids misjudgment of a single signal. Vehicle speed judgment module: used to start vehicle computer status judgment when the vehicle speed is greater than or equal to the threshold speed and the door is locked. The setting of the vehicle speed threshold can avoid false triggering when parking. In addition, it is activated only when necessary to reduce system power consumption and computing resource usage; Vehicle computer status judgment module: if the vehicle computer large screen display status is abnormal and the vehicle computer status is abnormal, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller, and the signal is transmitted through the VCU as the hub, using its high authority to ensure the command priority, so as to avoid BCM missing commands due to local failures; Door unlocking module: It is used to generate a door unlocking command after the BCM controller receives an abnormal status signal, and send the door unlocking command to the door lock to execute unlocking. Based on the automatic unlocking path of the abnormal status signal of the vehicle computer, the unlocking command will still be executed even if the vehicle is still moving, giving priority to the emergency evacuation needs of the occupants and increasing the level of safety protection.

[0044] The various modules of the system of the present invention cooperate with each other and can automatically unlock the vehicle doors when the vehicle computer is abnormal, thereby assisting the driver and passengers to escape quickly in an emergency.

[0045] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for emergency unlocking of a car door, characterized in that: The following steps are involved: Obtain vehicle speed, door lock status, vehicle screen display status and vehicle status; When the vehicle speed is greater than or equal to the threshold speed and the door is locked, the vehicle computer status judgment is started; If the vehicle computer large screen displays abnormal status and the vehicle computer status is abnormal, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller; After the BCM controller receives the abnormal status signal, it generates a door unlock command and sends the door unlock command to the door lock to execute unlocking.

2. A method for emergency unlocking of a vehicle door according to claim 1, characterized in that: The threshold speed is 15 km / h.

3. A method for emergency unlocking of a vehicle door according to claim 1, characterized in that: The abnormal display status of the vehicle computer large screen includes: the vehicle computer large screen displays a black screen or is stuck.

4. A method for emergency unlocking of a vehicle door according to claim 1, characterized in that: Also includes: If the car does not have the function of automatic locking according to vehicle speed, and the door locks are manually locked by the driver, the vehicle computer status judgment is started.

5. A method for emergency unlocking of a vehicle door according to claim 1, characterized in that: If the vehicle computer large screen display state is abnormal and the vehicle computer state is abnormal, the vehicle computer state abnormality signal is sent to the BCM controller through the VCU controller, specifically as follows: If the vehicle computer large screen displays an abnormal state, the vehicle computer state is determined; If the vehicle computer is in an abnormal state, determine whether the vehicle computer can return to normal within the threshold time; If the vehicle computer status cannot return to normal within the threshold time, the vehicle computer status abnormal signal is sent to the BCM controller through the VCU controller.

6. A method for emergency unlocking of a vehicle door according to claim 5, characterized in that: The abnormal vehicle computer status includes vehicle computer host communication interruption, vehicle computer host freeze and vehicle computer host error and no response.

7. A method for emergency unlocking of a vehicle door according to claim 6, characterized in that: When the vehicle computer status is abnormal, that is, the vehicle computer host is frozen or the vehicle computer host has an error and is unresponsive, a vehicle computer status abnormal signal is immediately sent to the BCM controller through the VCU controller.

8. The method for emergency unlocking of a vehicle door according to claim 1, characterized in that: After the door lock is unlocked, the unlocking status prompt is displayed on the instrument screen and continues until the door is opened or the vehicle is turned off.

9. The method for emergency unlocking of a vehicle door according to claim 1, characterized in that: After the door lock is unlocked, a buzzer and a warning light are triggered, and an unlocking alarm is sent to the user's mobile device.

10. A system for emergency unlocking of a vehicle door, based on the method according to any one of claims 1 to 9, characterized in that: include: Status acquisition module: used to obtain vehicle speed, door lock status, vehicle screen display status and vehicle status; Vehicle speed judgment module: used to start vehicle computer status judgment when the vehicle speed is greater than or equal to the threshold speed and the door is locked; Vehicle computer status judgment module: used to send a vehicle computer status abnormal signal to the BCM controller through the VCU controller if the vehicle computer large screen display status is abnormal and the vehicle computer status is abnormal; Door unlocking module: used to generate a door unlocking command after the BCM controller receives an abnormal status signal, and send the door unlocking command to the door lock to execute unlocking.

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