Door lock control system, door lock control method and vehicle

Abstract

The invention relates to the technical field of vehicle control, and provides a door lock control system, a door lock control method and a vehicle. The door lock control system comprises a safety air bag control unit, a vehicle body domain control unit, a door lock control unit and a door lock actuator. The safety air bag control unit is in communication connection with the vehicle body domain control unit and the door lock control unit, the vehicle body domain control unit is in communication connection with the door lock control unit, and the door lock control unit is in communication connection with the door lock actuator; the safety air bag control unit is configured to send collision signals to the vehicle body domain control unit and the door lock control unit at the same time when a target vehicle collides. The door lock control unit is configured to send a door lock control instruction to the door lock actuator according to a collision signal in response to disconnection of the communication connection with the vehicle body domain control unit when the target vehicle is collided; and the door lock actuator is configured to control unlocking of a door lock of the target vehicle in response to the received door lock control instruction.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a door lock control system, a door lock control method and a vehicle. Background Art

[0002] With the increasing popularity of new energy vehicles, the hand-free door opening is widely used on car doors due to its unique sense of technology and ritual. However, since the hand-free door opening does not have a mechanical handle but is controlled by a control system, under extreme conditions such as collisions, the control system may fail or the power system may be damaged, resulting in the door being unable to open, which brings great difficulties to rescue.

[0003] The related technology solves the problem of vehicle door opening by setting up a dual control system and a dual power supply. However, this solution requires high material and maintenance costs, has high requirements for vehicle space and line layout, and cannot solve the problem that when the body controller or the door controller is damaged, the collision signal cannot be transmitted to the door lock control unit, resulting in the door being unable to open. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first object of the present invention is to provide a door lock control system that can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall security of the door lock control system, further improving the safety performance of the vehicle.

[0005] A second object of the present invention is to provide a door lock control method.

[0006] A third object of the present invention is to provide a vehicle.

[0007] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present invention proposes a door lock control system including an airbag control unit, a body domain control unit, a door lock control unit and a door lock actuator; the airbag control unit is communicatively connected to the body domain control unit and the door lock control unit, the body domain control unit is communicatively connected to the door lock control unit, and the door lock control unit is communicatively connected to the door lock actuator; the airbag control unit is configured to send a collision signal to the body domain control unit and the door lock control unit at the same time when a collision occurs to the target vehicle; the door lock control unit is configured to disconnect the communication connection with the body domain control unit when a collision occurs to the target vehicle, and send a door lock control instruction to the door lock actuator according to the collision signal; the door lock actuator is configured to control the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

[0008] In addition, the door lock control system according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, it also includes a door smart switch, which is communicatively connected to the body domain control unit; the door smart switch is configured to send an unlocking instruction to the body domain control unit when receiving a door unlocking signal; and send a locking instruction to the body domain control unit when receiving a door locking signal; wherein the unlocking instruction is used to instruct the door lock actuator to control the door lock of the target vehicle to unlock, and the locking instruction is used to instruct the door lock actuator to control the door lock of the target vehicle to lock.

[0010] According to some embodiments of the present invention, a central locking switch unit is further included, which is communicatively connected to the body domain control unit; the central locking switch unit is configured to send a virtual locking signal to the body domain control unit when receiving a central locking signal; and send a virtual unlocking signal to the body domain control unit when receiving a central unlocking signal; wherein the virtual locking signal is used to shield the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is prohibited from being transmitted to the door lock control unit; the virtual unlocking signal is used to unshield the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is transmitted to the door lock control unit.

[0011] According to some embodiments of the present invention, the body domain control unit is configured to automatically unblock the unlocking command or the locking command in response to maintaining a communication connection with the door lock control unit when a collision occurs in the target vehicle, so that the unlocking command or the locking command is transmitted to the door lock control unit.

[0012] According to some embodiments of the present invention, a backup power supply is also included, which is connected to the body domain control unit, the door lock control unit and the door lock actuator, and is used to power the body domain control unit, the door lock control unit and / or the door lock actuator when the vehicle power supply of the target vehicle fails.

[0013] According to some embodiments of the present invention, the door lock control unit is also configured to delay a preset time interval and execute an operation of sending a door lock control instruction to the door lock actuator based on a collision signal after the communication connection with the body domain control unit is disconnected in response to a collision situation of the target vehicle.

[0014] According to some embodiments of the present invention, the airbag control unit includes an airbag, and the collision condition is when the airbag is detonated.

[0015] According to some embodiments of the present invention, an emergency rescue unit is further included, which is communicatively connected to the airbag control unit; the emergency rescue unit is configured to respond to detecting a collision signal and send out emergency rescue information according to the collision signal.

[0016] The door lock control system according to the embodiment of the present invention can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall safety of the door lock control system, further improving the safety performance of the vehicle. In addition, the present invention can also send out emergency rescue information in the event of a collision, thereby improving the rescue success rate of the driver and passengers.

[0017] To achieve the above-mentioned object, a second embodiment of the present invention proposes a door lock control method, which is applied to the door lock control system described above, wherein the door lock control system includes an airbag control unit, a body domain control unit, a door lock control unit, and a door lock actuator; the airbag control unit is communicatively connected with the body domain control unit and the door lock control unit, the body domain control unit is communicatively connected with the door lock control unit, and the door lock control unit is communicatively connected with the door lock actuator, and the method includes:

[0018] The airbag control unit sends a collision signal to the body domain control unit and the door lock control unit simultaneously when a collision occurs to the target vehicle; the door lock control unit disconnects the communication connection with the body domain control unit in response to the collision, and sends a door lock control instruction to the door lock actuator according to the collision signal; the door lock actuator controls the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

[0019] The door lock control method provided by the embodiment of the present invention can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall safety of the door lock control system, further improving the safety performance of the vehicle. In addition, the present invention can also send out emergency rescue information in the event of a collision, thereby improving the rescue success rate of the driver and passengers.

[0020] To achieve the above-mentioned purpose, the third embodiment of the present invention proposes a vehicle, including the above-mentioned door lock control system, which can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall safety of the door lock control system, further improving the safety performance of the vehicle. In addition, the present invention can also send out emergency rescue information in the event of a collision, thereby improving the rescue success rate of the driver and passengers.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the door lock control system framework provided by an embodiment of the present invention.

[0024] Figure 2 A schematic diagram of the layout of a door lock control system provided in an embodiment of the present invention.

[0025] Figure 3 The present invention provides a flow chart of a door lock control method.

[0026] Figure 4 A schematic diagram of a vehicle provided in an embodiment of the present invention.

[0027] Figure numerals: 10 - airbag control unit; 20 - central locking switch unit; 30 - door intelligent switch; 40 - body domain control unit; 50 - door lock control unit; 60 - door lock actuator; 70 - backup power supply; 100 - door lock control system; 1000 - vehicle. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] As mentioned in the background technology section, with the increasing popularity of new energy vehicles, more and more new energy vehicles choose to use handleless electric doors with a high sense of technology and ritual. As the main channel for drivers and passengers to enter and exit the vehicle, the safety of the door is also very important. When the vehicle is in a collision or other extreme working conditions, it may face the situation that the central lock cannot be released due to damage to the control system or power system, or the collision signal cannot be transmitted to the door lock control system, which will cause the door to be unable to open, affecting the rescue of the driver and passengers.

[0031] In the process of realizing the present invention, the applicant discovered that in the related art, some new energy vehicles adopted a dual control system and a dual power supply to solve the above-mentioned problem. However, this solution has high manufacturing and maintenance costs, and has high requirements on the space and line layout of the vehicle, which is not conducive to mass production. At the same time, it also cannot solve the problem that the collision signal cannot be transmitted to the door lock control unit due to damage to the body controller or the door controller. Therefore, how to achieve safer and more reliable door lock control without increasing too much cost has become a problem that needs to be solved urgently.

[0032] The technical solution of the present invention is further described in detail below through specific embodiments.

[0033] refer to Figure 1 , which is a schematic diagram of the framework of a door lock control system 100 provided in an embodiment of the present invention.

[0034] A door lock control system 100 provided according to an embodiment of the present invention includes an airbag control unit 10, a central locking switch unit 20, a door smart switch 30, a body domain control unit 40, a door lock control unit 50, a door lock actuator 60 and a backup power supply 70.

[0035] Specifically, the airbag control unit 10 is communicatively connected with the vehicle body domain control unit 40 and the door lock control unit 50 , and the airbag control unit 10 can send a collision signal to the vehicle body domain control unit 40 and the door lock control unit 50 at the same time.

[0036] The central locking switch unit 20 is communicatively connected with the vehicle body domain control unit 40 . When receiving an external central locking / unlocking signal, the central locking switch unit 20 sends a virtual locking / unlocking signal to the vehicle body domain control unit 40 .

[0037] The vehicle door smart switch 30 is communicatively connected with the vehicle body domain control unit 40 . When receiving a vehicle door lock / unlock signal, the vehicle door smart switch 30 can send a lock / unlock instruction to the vehicle body domain control unit 40 .

[0038] The body domain control unit 40 is in communication connection with the door lock control unit 50 . After receiving the signal, the body domain control unit 40 controls the door lock control unit 50 to send a door lock control instruction to the door lock actuator 60 .

[0039] The door lock control unit 50 is in communication connection with the door lock actuator 60 , and controls the door lock actuator 60 to open or lock the vehicle door.

[0040] The backup power supply 70 is connected to the body domain control unit 40, the door lock control unit 50 and the door lock actuator 60, and is used to supply power to the body domain control unit 40, the door lock control unit 50 and the door lock actuator 60 when the vehicle battery is powered off.

[0041] It should be noted that the communication connection method described in the door lock control system 100 can be CAN line connection, LIN line connection or hard wire connection, so that various signals in the door lock control system 100 can be accurately transmitted to the body domain control unit 40 or the door lock control unit 50, and further control the door lock actuator 60 to open or lock the door. Among them, the CAN (Controller Area Network) line is a serial communication protocol widely used in automotive electronic control systems, with a high data transmission rate and strong anti-interference ability, and can realize real-time communication between devices; the LIN (Local Interconnect Network) line is a low-cost serial communication protocol that can be used to connect electronic systems in vehicles, with the advantages of low cost, low power consumption and easy expansion; the hard wire connection connects electronic devices through physical wires to realize signal transmission. The hard wire connection has good stability, reliable signal transmission, strong anti-interference, and fast signal transmission speed.

[0042] It should be noted that the communication connection between the body domain control unit 40 and the door lock control unit 50 also includes a heartbeat communication connection. During the communication process, one party (or both parties) will send a heartbeat packet to the other party at a predetermined time interval, and the other party will respond after receiving the heartbeat packet, thereby ensuring that the connection between the two connected parties is always in a valid state. If one party sends a signal and the other party fails to respond, or one party is responding but the other party has no signal to send, it can be deemed that the heartbeat connection is disconnected.

[0043] refer to Figure 2 , which is a schematic diagram of an arrangement scheme of a door lock control system 100 provided in an embodiment of the present invention.

[0044] As an optional embodiment, the door lock control system 100 of the embodiment of the present invention can be integrated into the door of the target vehicle, wherein the airbag control unit 10 and the central lock switch unit 20 can be arranged outside the door cavity of the target vehicle and connected to other electrical components through high and low voltage wiring harnesses; the door intelligent switch 30 can be a button type and can be arranged at the B-pillar position of the target vehicle; the body domain control unit 40, the door lock control unit 50, the door lock actuator 60 and the backup power supply 70 can be arranged inside the door cavity and close to the collision low deformation zone, which can effectively protect the body domain control unit 40, the door lock control unit 50, the door lock actuator 60 and the backup power supply 70 from damage in a collision, thereby improving the safety of the door lock control system 100. In addition, this arrangement can also effectively extend the service life of the body domain control unit 40, the door lock control unit 50, the door lock actuator 60 and the backup power supply 70, and reduce the repair and replacement costs caused by damage caused by collision.

[0045] According to a door lock control system 100 provided by an embodiment of the present invention, the airbag control unit 10 is configured to send a collision signal to the vehicle body domain control unit 40 and the door lock control unit 50 simultaneously when a collision occurs to the target vehicle.

[0046] The door intelligent switch 30 is configured to send an unlocking instruction to the body domain control unit 40 when receiving a door unlocking signal; and send a locking instruction to the body domain control unit 40 when receiving a door locking signal; wherein the unlocking instruction is used to instruct the door lock actuator 60 to control the door lock of the target vehicle to unlock, and the locking instruction is used to instruct the door lock actuator 60 to control the door lock of the target vehicle to lock.

[0047] The central locking switch unit 20 is configured to send a virtual locking signal to the body domain control unit 40 when receiving a central locking signal; and send a virtual unlocking signal to the body domain control unit 40 when receiving a central unlocking signal; wherein the virtual locking signal is used to shield the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is prohibited from being transmitted to the door lock control unit 50; the virtual unlocking signal is used to unshield the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is transmitted to the door lock control unit 50.

[0048] The door lock control unit 50 is configured to disconnect the communication connection with the body domain control unit 40 in response to a collision situation of the target vehicle, and send a door lock control instruction to the door lock actuator 60 according to the collision signal; the door lock actuator 60 is configured to control the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

[0049] Specifically, the airbag control unit 10 is the controller of the airbag system. When the target vehicle collides, the airbag control unit 10 analyzes, judges and processes the collision situation. When the collision may cause harm to the driver and passengers, the airbag control unit 10 sends a collision signal to the body domain control unit 40 and the door lock control unit 50 at the same time. The collision signal is sent through dual lines to ensure that the current collision situation can be fed back to the door lock control unit 50, and the door lock control unit 50 performs corresponding actions on the current collision situation.

[0050] Specifically, the vehicle door intelligent switch 30 is a main signal generating unit for controlling the locking or unlocking of the vehicle door, and can send a locking command or an unlocking command to the vehicle body domain control unit 40 . The car door smart switch 30 can be a button / touch unlocking, which requires pressing or touching a specific button or area to trigger the unlocking action; the car door smart switch 30 can also be an NFC / BLE / UWB digital key. NFC digital keys are usually used for smart phones or NFC cards. Users only need to bring the device close to the car door sensor to unlock it. The BLE digital key uses Bluetooth communication technology to unlock the car door. The UWB digital key uses TOF (time of flight) and TDOA (time difference of arrival) and other ranging technologies to achieve high-precision positioning and unlocking; the car door smart switch 30 can also open the door by kicking. Kicking the door usually detects the user's kicking action through a sensor installed at the bottom of the vehicle, thereby triggering the unlocking and opening action of the car door; the car door smart switch 30 can also control the car door switch through face / gesture recognition technology. The face / gesture recognition technology captures the user's facial features or gestures through a camera, and identifies and analyzes them through algorithms to further trigger the unlocking or locking of the car door.

[0051] Specifically, the central lock switch unit 20 controls the unlocking and locking of the target vehicle door lock in a virtual lock manner. When receiving an external central control signal, the central lock switch unit 20 controls whether the lock / unlock signal sent by the door smart switch 30 can be sent to the body domain control unit 40 through software instructions (virtual lock signal or virtual unlock signal), that is, whether the lock / unlock signal sent by the door smart switch 30 is shielded.

[0052] Among them, when the central lock switch unit 20 receives the central lock signal, the virtual signal sent to the body domain control unit 40 is a virtual lock signal, and the virtual lock signal can shield the unlock command or lock command sent by the door smart switch 30 to the body domain control unit 40; when the central lock switch unit 20 receives the central unlock signal, the virtual signal sent to the body domain control unit 40 is a virtual unlock signal, and the virtual unlock signal can release the shielding of the unlock command or lock command sent by the door smart switch 30 to the body domain control unit 40.

[0053] For example, when the target vehicle is moving, the central locking switch unit 20 always receives the central locking signal and sends a virtual locking signal to the body domain control unit 40. If a passenger accidentally touches the door opening function of the door intelligent switch 30, the virtual locking signal can shield the unlocking command input by the door intelligent switch 30 to the body domain control unit 40 to ensure that the door always remains locked, effectively ensuring driving safety; when the target vehicle is in a parked state, the central locking switch unit 20 receives the central unlocking signal and sends a virtual unlocking signal to the body domain control unit 40 to unblock the unlocking command, so that the door intelligent switch 30 sends an unlocking command to the body domain control unit 40 when receiving the door unlocking signal, ensuring that the door can be opened normally.

[0054] Specifically, the body domain control unit 40 can receive signals sent by the airbag control unit 10, the door smart switch 30 and the central lock switch unit 20, and control the door lock control unit to perform corresponding actions according to the content of the signal.

[0055] It should be noted that the body domain control unit 40 can be a body controller BCM (Body Control Module) or a door controller DCU (Door Control Unit), wherein the body controller BCM can control various functions of the door including the door lock; the door controller DCU (Door Control Unit) is a controller specifically used to manage and control the door system, which can monitor the state of the door (such as open, closed, etc.) and control the movement of the door, such as unlocking, locking, opening, closing, etc. In the embodiment of the present invention, the body domain control unit 40 is preferably a door controller.

[0056] Specifically, the door lock control unit 50 is an electronic control unit responsible for controlling the locking and unlocking of the vehicle doors, and can send a door lock control instruction to the door lock actuator 60 to enable the door lock actuator 60 to open or lock the vehicle doors. When the communication connection between the body domain control unit 40 of the target vehicle and the door lock control unit 50 is disconnected, the door lock control unit 50 can directly receive the collision signal sent by the airbag control unit 10, and send a door lock control instruction to the door lock actuator 60 according to the collision signal.

[0057] Specifically, the door lock actuator 60 can open or lock the vehicle door according to the door lock control command sent by the door lock control unit 50, and its design scheme can be selected according to the actual application scenario, cost budget and technical feasibility.

[0058] It should be noted that the door lock actuator 60 can be an "electric drive + ice-breaking lock" solution with a high degree of automation and cost. This solution can accurately control the opening or locking of the door lock and has an intelligent recognition function. The specially designed ice-breaking lock can effectively prevent the door from being frozen in rainy and snowy weather, ensure the smooth opening of the door, and improve the safety of the vehicle; the door lock actuator 60 can also be a lower-cost split "electric unlocking + electric support rod" solution. This solution is more convenient to install and maintain, has a lower failure rate, and can meet conventional unlocking / locking needs. When the gear door is severely frozen in extreme rainy and snowy weather, additional ice-breaking measures may be required.

[0059] As an optional embodiment, when the target vehicle is in a normal moving state, the door lock control system 100 is configured as follows: the central lock switch unit 20 always receives the central lock signal, and the central lock switch unit 20 sends a virtual lock signal to the body domain control unit 40 to shield the unlock command or lock command sent by the door smart switch 30 to the body domain control unit 40, ensuring that the door of the target vehicle always remains locked during normal travel.

[0060] As an optional embodiment, when the target vehicle is in a normal stopped state, the door lock control system 100 is configured as follows: the central lock switch unit 20 can receive the central unlock signal and send a virtual unlock signal to the body domain control unit 40 to unblock the unlock command or lock command sent by the door smart switch 30 to the body domain control unit 40, ensuring that the target vehicle can unlock or lock the door when it is in a normal stopped state.

[0061] As an optional embodiment, when the target vehicle is in a collision state, the door lock control system 100 is configured as follows: the airbag control unit 10 outputs a collision signal to the body domain control unit 40 and the door lock control unit 50, and when the communication connection between the door lock control unit 50 and the body domain control unit 40 is normal, the body domain control unit 40 can receive the unlocking command of the door smart switch 30, and further control the door lock control unit 50 to send a door lock control command to the door lock actuator 60, so that the door lock actuator 60 can control the door lock of the target vehicle to unlock.

[0062] As an optional embodiment, when the target vehicle is in a collision condition, the door lock control system 100 is configured as follows: the airbag control unit 10 sends a collision signal to the body domain control unit 40 and the door lock control unit 50 at the same time, and when the communication connection between the door lock control unit 50 and the body domain control unit 40 is disconnected, the door lock control unit 50 can directly send a door lock control instruction to the door lock actuator 60, so that the door lock actuator 60 can control the door lock of the target vehicle to unlock.

[0063] It should be noted that the communication connection between the door lock control unit 50 and the body domain control unit 40 is disconnected when the body domain control unit 40 is damaged, the connection line between the body domain control unit 40 and the door lock control unit 50 is damaged, or both the body domain control unit 40 and the connection line are damaged.

[0064] As an optional embodiment, the body domain control unit 40 is configured to automatically unblock the unlock command or the lock command in response to maintaining a communication connection with the door lock control unit 50 when a collision occurs in the target vehicle, so that the unlock command or the lock command is transmitted to the door lock control unit 50.

[0065] Specifically, when the target vehicle collides, the airbag control unit 10 will send a collision signal to the body domain control unit 40. When the body domain control unit 40 maintains a communication connection with the door lock control unit 50, the body domain control unit 40 automatically releases the shielding of the unlocking command or the locking command to transmit the unlocking command or the locking command to the door lock control unit 50. The collision signal does not need to be sent to the central lock switch unit 20, and the central lock switch unit 20 sends a virtual unlocking signal, which reduces the time for communication transmission signals and avoids the situation where the central lock switch unit 20 and the body domain control unit 40 are disconnected due to a collision, and the virtual unlocking signal cannot be sent, resulting in the inability to unlock the door.

[0066] As an optional embodiment, the door lock control system 100 also includes a backup power supply 70, which is connected to the body domain control unit 40, the door lock control unit 50 and the door lock actuator 60, and is used to power the body domain control unit 40, the door lock control unit 50 and / or the door lock actuator 60 when the vehicle power supply of the target vehicle fails.

[0067] Specifically, when the target vehicle is in a collision condition, the vehicle power supply or low-voltage line may be accidentally damaged, causing the door lock control system 100 to lose power. At this time, the backup power supply 70 is automatically enabled to supply power to the body domain control unit 40, the door lock control unit 50 and the door lock actuator 60, ensuring that the collision signal can be received by the body domain control unit 40 and the door lock control unit 50, thereby ensuring the reliability and safety of the door lock control system 100.

[0068] Among them, when the communication connection between the body domain control unit 40 and the door lock control unit 50 is normal, the backup power supply 70 supplies power to the body domain control unit 40, the door lock control unit 50 and the door lock actuator 60, ensuring that the door lock control unit 50 can send door lock control instructions to the door lock actuator 60 according to the control instructions of the body domain control unit 40; when the communication connection between the body domain control unit 40 and the door lock control unit 50 is disconnected, the backup power supply 70 supplies power to the door lock control unit 50 and the door lock actuator 60, ensuring that the door lock control unit 50 can send door lock control instructions to the door lock actuator 60 according to the collision signal.

[0069] As an optional embodiment, the door lock control unit 50 is also configured to delay a preset time interval and execute an operation of sending a door lock control instruction to the door lock actuator 60 according to a collision signal after disconnecting the communication connection with the body domain control unit 40 in response to a collision situation of the target vehicle.

[0070] Specifically, when the target vehicle collides and the communication connection between the door lock control unit 50 and the body domain control unit 40 is disconnected, the door lock control unit 50 needs to send a door lock control instruction to the door lock actuator 60 according to the collision signal after a preset time interval to control the opening of the door of the target vehicle.

[0071] When a target vehicle collides, it may be in an unstable state for a period of time, for example, it may roll over or skid after a collision. The target vehicle may still be in a sliding state for a period of time. If the door lock control unit 50 immediately sends a door lock control command to open the door of the target vehicle after receiving the collision signal, the door may be opened before the target vehicle stops, causing secondary damage to the driver and passengers. The door lock control unit 50 can effectively avoid secondary damage to the driver and passengers after the target vehicle collides by executing the operation of sending the door lock control command after a preset time interval, further improving the safety and reliability of the door lock control system 100.

[0072] As an optional embodiment, the airbag control unit 10 includes an airbag, and the collision condition is when the airbag is detonated.

[0073] Specifically, when a car collides, the airbag control unit 10 will accurately judge the collision intensity of the target vehicle. If the collision may cause harm to the driver or passengers, the airbag control unit 10 will further analyze the detonation speed and ignition time of the airbag, and issue an ignition command to drive the gas generator to ignite and detonate the airbag. Once the airbag is detonated, it will inflate quickly and achieve the best protection effect. At the same time, the airbag control unit 10 will send a collision signal to the body domain control unit 40 and the door lock control unit 50. Setting the airbag detonation as the collision condition of the door lock control system 100 can accurately enable the door lock control system 100 under severe collision conditions, avoid unnecessary unlocking actions in minor collisions, and further avoid resource waste.

[0074] As an optional embodiment, the door lock control system 100 further includes an emergency rescue unit, which is communicatively connected to the airbag control unit 10; the emergency rescue unit is configured to respond to a detected collision signal and send out emergency rescue information according to the collision signal.

[0075] Specifically, when the emergency rescue unit receives the collision signal from the airbag control unit 10, it can send out emergency rescue information according to the severity of the accident. The emergency rescue information may include the location of the vehicle, the severity of the collision, and the assistance that the passengers may need. Such rescue information can be quickly conveyed to nearby rescue agencies or emergency service departments to shorten the rescue response time after a collision occurs, thereby further improving the reliability of the door lock control system 100.

[0076] From the above, it can be seen that the door lock control system provided by the present invention can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall safety of the door lock control system, further improving the safety performance of the vehicle. In addition, the present invention can also send out emergency rescue information in the event of a collision, thereby improving the rescue success rate of the driver and passengers.

[0077] Based on the same inventive concept, corresponding to the door lock control system provided by any of the above embodiments, the present invention also provides a door lock control method.

[0078] refer to Figure 3 , which is a flow chart of a door lock control method provided in an embodiment of the present invention.

[0079] Step S301, when a collision occurs with a target vehicle, the airbag control unit simultaneously sends a collision signal to the vehicle body control unit and the door lock control unit;

[0080] Step S302, in response to the target vehicle having a collision, the door lock control unit disconnects the communication connection with the body domain control unit and sends a door lock control instruction to the door lock actuator according to the collision signal;

[0081] Step S303: In response to receiving the door lock control instruction, the door lock actuator controls the door lock of the target vehicle to unlock.

[0082] A door lock control method provided by the present invention is applied to the above-mentioned door lock control system, which includes an airbag control unit, a body domain control unit, a door lock control unit and a door lock actuator; the airbag control unit is communicatively connected with the body domain control unit and the door lock control unit, the body domain control unit is communicatively connected with the door lock control unit, and the door lock control unit is communicatively connected with the door lock actuator; the method includes: the airbag control unit simultaneously sends a collision signal to the body domain control unit and the door lock control unit when a collision occurs to a target vehicle; the door lock control unit disconnects the communication connection with the body domain control unit in response to a collision occurs to the target vehicle, and sends a door lock control instruction to the door lock actuator according to the collision signal; the door lock actuator controls the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

[0083] As an optional embodiment, when the target vehicle is in a collision state, the airbag control unit outputs a collision signal to the body domain control unit and the door lock control unit. When the communication connection between the door lock control unit and the body domain control unit is disconnected, the door lock control unit can directly send a door lock control instruction to the door lock actuator, so that the door lock actuator can control the door lock of the target vehicle to unlock.

[0084] It should be noted that when the door lock control unit and the body domain control unit are communicating normally, the door lock control unit does not directly send door lock control instructions to the door lock actuator to ensure that the control logic of the door lock control system is reasonable, to prevent the door lock control unit from directly controlling the door lock actuator to perform the door lock unlocking action when the communication connection with the body domain control unit is normal, causing confusion in the control system logic, and thus leading to failure of the door lock control system.

[0085] As an optional embodiment, when the target vehicle is in a collision condition and the power supply of the entire vehicle is not working, and the body domain control unit maintains a communication connection with the door lock control unit, the backup power supply automatically starts to power the body domain control unit, the door lock control unit and the door lock actuator, ensuring that the collision signal can be received by the body domain control unit and the door lock control unit, and further controlling the door lock actuator to unlock the door lock of the target vehicle.

[0086] As an optional embodiment, when the target vehicle is in a collision condition and the vehicle power supply is not working, and the body domain control unit is disconnected from the door lock control unit, the backup power supply is automatically started to supply power to the door lock control unit and the door lock actuator, ensuring that the collision signal can be received by the door lock control unit, and further controlling the door lock actuator to unlock the door lock of the target vehicle.

[0087] From the above, it can be seen that the door lock control method provided by the present invention can control the normal unlocking of the door when the body domain controller of the door or its communication link is damaged, thereby reducing the manufacturing cost and improving the overall safety of the door lock control system, further improving the safety performance of the vehicle. In addition, the present invention can also send out emergency rescue information in the event of a collision, thereby improving the rescue success rate of the driver and passengers.

[0088] It should be noted that the method of the embodiment of the present invention can be performed by a single device, such as a computer or a server. The method of this embodiment can also be applied in a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present invention, and the multiple devices will interact with each other to complete the described method.

[0089] It should be noted that some embodiments of the present invention are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0090] refer to Figure 4 , is a schematic diagram of a vehicle 1000 provided in an embodiment of the present invention.

[0091] Based on the same inventive concept, corresponding to the door lock control system 100 provided in any of the above embodiments, the present invention further provides a vehicle 1000, including the above door lock control system 100. The door lock control system 100 of the above embodiment is used to implement the corresponding functions of the vehicle 1000 and has corresponding beneficial effects, which will not be described in detail here.

[0092] In addition, although the operations of the method of the present invention are described in a specific order in the accompanying drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. On the contrary, the steps depicted in the flow chart can be performed in a different order. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step, and / or one step can be decomposed into multiple steps.

[0093] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0094] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0095] Although the spirit and principle of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and this division is only for the convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims. The scope of the attached claims conforms to the broadest interpretation, thereby including all such modifications and equivalent structures and functions.

Claims

1. A door lock control system, characterized in that: The invention comprises an airbag control unit (10), a vehicle body domain control unit (40), a door lock control unit (50) and a door lock actuator (60); the airbag control unit (10) is communicatively connected with the vehicle body domain control unit (40) and the door lock control unit (50); the vehicle body domain control unit (40) is communicatively connected with the door lock control unit (50); and the door lock control unit (50) is communicatively connected with the door lock actuator (60); The airbag control unit (10) is configured to send a collision signal to the vehicle body domain control unit (40) and the door lock control unit (50) simultaneously when a collision occurs to the target vehicle; The door lock control unit (50) is configured to disconnect the communication connection with the vehicle body domain control unit (40) in response to a collision of the target vehicle, and send a door lock control instruction to the door lock actuator (60) according to the collision signal; The door lock actuator (60) is configured to control the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

2. The door lock control system according to claim 1, characterized in that: It also includes a vehicle door intelligent switch (30), which is communicatively connected to the vehicle body domain control unit (40); The vehicle door intelligent switch (30) is configured to send an unlocking instruction to the vehicle body domain control unit (40) when receiving a vehicle door unlocking signal; and send a locking instruction to the vehicle body domain control unit (40) when receiving a vehicle door locking signal; wherein the unlocking instruction is used to instruct the door lock actuator (60) to control the door lock of the target vehicle to unlock, and the locking instruction is used to instruct the door lock actuator (60) to control the door lock of the target vehicle to lock.

3. The door lock control system according to claim 2, characterized in that: It also includes a central locking switch unit (20), wherein the central locking switch unit (20) is communicatively connected to the vehicle body domain control unit (40); The central locking switch unit (20) is configured to send a virtual locking signal to the vehicle body domain control unit (40) when receiving a central locking signal; and send a virtual unlocking signal to the vehicle body domain control unit (40) when receiving a central unlocking signal; wherein the virtual locking signal is used to shield the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is prohibited from being transmitted to the door lock control unit (50); and the virtual unlocking signal is used to release the shielding of the unlocking instruction or the locking instruction so that the unlocking instruction or the locking instruction is transmitted to the door lock control unit (50).

4. The door lock control system according to claim 3, characterized in that: The vehicle body domain control unit (40) is configured to automatically unblock the unlocking instruction or the locking instruction in response to maintaining a communication connection with the door lock control unit (50) when a collision occurs with the target vehicle, so that the unlocking instruction or the locking instruction is transmitted to the door lock control unit (50).

5. The door lock control system according to claim 4, characterized in that: The invention also comprises a backup power supply (70), wherein the backup power supply (70) is connected to the vehicle body domain control unit (40), the door lock control unit (50) and the door lock actuator (60), and is used to supply power to the vehicle body domain control unit (40), the door lock control unit (50) and / or the door lock actuator (60) when the vehicle power supply of the target vehicle fails.

6. The door lock control system according to claim 5, characterized in that: The door lock control unit (50) is also configured to, in response to disconnecting the communication connection with the vehicle body domain control unit (40) when a collision occurs in the target vehicle, delay a preset time interval and execute an operation of sending a door lock control instruction to the door lock actuator (60) according to the collision signal.

7. The door lock control system according to claim 6, characterized in that: The safety airbag control unit (10) comprises a safety airbag, and the collision situation is when the safety airbag is detonated.

8. The door lock control system according to claim 7, characterized in that: It also includes an emergency rescue unit, which is communicatively connected to the airbag control unit (10); The emergency rescue unit is configured to send out emergency rescue information according to the collision signal in response to detecting the collision signal.

9. A door lock control method, applied to the door lock control system according to any one of claims 1 to 8, wherein the door lock control system comprises an airbag control unit, a body domain control unit, a door lock control unit and a door lock actuator; the airbag control unit is communicatively connected with the body domain control unit and the door lock control unit, the body domain control unit is communicatively connected with the door lock control unit, and the door lock control unit is communicatively connected with the door lock actuator, characterized in that: The method comprises: The airbag control unit simultaneously sends a collision signal to the body domain control unit and the door lock control unit when a collision occurs to the target vehicle; The door lock control unit is responsive to disconnecting the communication connection with the body domain control unit when a collision occurs in the target vehicle, and sends a door lock control instruction to the door lock actuator according to the collision signal; The door lock actuator controls the door lock of the target vehicle to unlock in response to receiving the door lock control instruction.

10. A vehicle, characterized in that: The invention comprises the door lock control system according to any one of claims 1 to 8.

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