Vehicle door control system and method

Abstract

The invention relates to the technical field of new energy vehicles, in particular to a vehicle door control system and method.The system comprises at least two area controllers, a whole vehicle battery unit and a standby power source, and the area controllers correspond to the whole vehicle battery unit and the standby power source respectively; a power channel is arranged between the whole vehicle battery unit and the corresponding area controller, the whole vehicle battery unit supplies power to the area controller through the corresponding power channel, and the area controller is connected with at least one target vehicle door component so as to control the connected target vehicle door component. The target vehicle door parts controlled by the area controllers are different, and all the target vehicle door parts comprise a door handle part and a door lock part of the vehicle; the standby power supply is arranged in the corresponding power supply channel so as to supply power to the corresponding area controller when the whole vehicle battery unit is abnormal; according to the system, when the battery unit of the whole vehicle is abnormal, the standby power supply can be used for supplying power to the corresponding area controller, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a door control system and method. Background Art

[0002] Hidden door handles are widely used in vehicles because they can enhance the appearance of the vehicle and reduce the obstruction of the vehicle door handles to air flow. When a high-speed collision occurs in the vehicle, a controller (such as a body control module (BCM)) is required to control the hidden door handle to pop out and unlock the door lock to facilitate the rapid evacuation of the occupants or the on-site rescue of the outsiders. The controller is usually powered by the vehicle power system.

[0003] However, when the vehicle collides at high speed, the vehicle's power system may experience power supply abnormalities, causing the controller to malfunction and be unable to control the hidden door handles and door locks, thus hindering on-site rescue and posing certain safety hazards. Summary of the invention

[0004] The present invention provides a vehicle door control system, method, electronic device and storage medium to solve the problem in the prior art that when a power supply abnormality occurs in the vehicle power system, a controller for controlling hidden door handles and door locks becomes abnormal, and the hidden door handles and door locks cannot be controlled, which poses a certain safety hazard.

[0005] The present invention provides a vehicle door control system, the system comprising: at least two regional controllers, a vehicle battery unit, and a backup power supply, the regional controllers corresponding to the vehicle battery unit and the backup power supply respectively;

[0006] A power channel is provided between the vehicle battery unit and the corresponding regional controller, and the vehicle battery unit supplies power to the regional controller through the corresponding power channel. The regional controller is connected to at least one target door component to control the connected target door component. There are differences between the target door components controlled by each regional controller, and all the target door components include a door handle component and a door lock component of the vehicle;

[0007] The backup power supply is arranged in the corresponding power supply channel to supply power to the corresponding regional controller when the battery unit of the whole vehicle is abnormal.

[0008] In one embodiment of the present invention, it further includes: an airbag controller, at least two area controllers including: a first area controller, a second area controller, and a third area controller;

[0009] The first area controller supplies power to the airbag controller through a preset power line; the airbag controller is used to detect a collision of the vehicle, and when it is determined that the vehicle has collided, sends a collision signal to the first area controller;

[0010] The first zone controller is used to forward the collision signal to the second zone controller and the third zone controller respectively, and the collision signal is used to instruct the first zone controller, the second zone controller, and the third zone controller to perform target control operations, and the target control operations include popping out the connected door handle and unlocking the connected door lock.

[0011] In one embodiment of the present invention, the collision signal includes: a collision CAN signal and a first collision hard-line signal, the collision CAN signal is transmitted via a CAN bus between the airbag controller and the first zone controller, and the first collision hard-line signal is transmitted via a hard line between the airbag controller and the first zone controller;

[0012] The first regional controller is used to perform the target control operation when receiving the collision CAN signal and / or the first collision hard-line signal; when receiving the CAN signal, forward the collision CAN signal to the second regional controller and the third regional controller respectively; when receiving the first collision hard-line signal, convert the first collision hard-line signal into a first Ethernet signal, and transmit the first Ethernet signal to the second regional controller and the third regional controller respectively;

[0013] The second zone controller and the third zone controller perform the target control operation when receiving the collision CAN signal and / or the first Ethernet signal.

[0014] In one embodiment of the present invention, the airbag controller is further used to send a second collision hard-line signal to the third zone controller, and the second collision hard-line signal is transmitted via a hard line between the airbag controller and the third zone controller;

[0015] The third regional controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second collision hard-line signal; when receiving the second collision hard-line signal, convert the second collision hard-line signal into a second Ethernet signal, and transmit the second Ethernet signal to the first regional controller and the second regional controller respectively;

[0016] The first zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first collision hard-line signal, and the second Ethernet signal; the second zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second Ethernet signal.

[0017] In one embodiment of the present invention, the first zone controller is respectively connected to the left front door lock component, the left front door handle component, the left rear door lock component, and the left rear door handle component of the vehicle; the second zone controller is respectively connected to the right front door lock component and the right front door handle component of the vehicle; and the third zone controller is respectively connected to the right rear door lock component and the right rear door handle component of the vehicle.

[0018] In one embodiment of the present invention, the door handle component includes: a door handle drive motor and a Hall sensor, the door handle drive motor is used to drive the door handle to hide or pop out, the Hall sensor is used to detect the position of the door handle, the door handle drive motor and the Hall sensor are respectively connected to the corresponding zone controller; the door lock component includes a door lock motor, which is used to drive the vehicle's door lock to lock or unlock, and the door lock motor is connected to the corresponding zone controller.

[0019] In one embodiment of the present invention, the door lock component further includes: a child lock motor, used to drive the child lock to lock or unlock, and the child lock motor is connected to the corresponding zone controller.

[0020] In one embodiment of the present invention, the backup power supply is a supercapacitor, and the capacitance value of the supercapacitor is determined based on a target load, and the target load includes: a zone controller corresponding to the supercapacitor and a target door component connected to the zone controller.

[0021] The present invention also provides a door control method based on the door control system as described in any one of the above items, the method comprising: when the battery unit of the whole vehicle is abnormal, using the backup power supply to power the corresponding zone controller.

[0022] In one embodiment of the present invention, the backup power supply is a supercapacitor, and the step of determining the capacitance value of the supercapacitor includes:

[0023] Obtaining target parameters, the target parameters including: a first parameter of a target area controller, and a second parameter of a target door component connected to the target area controller, the target area controller refers to a region controller corresponding to the current supercapacitor, the first parameter including: a first maximum operating current, a first operating time, a first rated voltage, and a first minimum operating voltage of the target area controller, the second parameter including: a second maximum operating current, a second operating time, a second rated voltage, and a second minimum operating voltage of the target door component connected to the target area controller;

[0024] determining the product of the first maximum operating current and the first operating time as a first intermediate value; determining the difference between the first rated voltage and the first minimum operating voltage as a second intermediate value; and determining the ratio between the first intermediate value and the second intermediate value as a first target capacitance value;

[0025] determining the product of the second maximum operating current and the second operating time as a third intermediate value; determining the difference between the second rated voltage and the second minimum operating voltage as a fourth intermediate value; and determining the ratio between the third intermediate value and the fourth intermediate value as a second target capacitance value;

[0026] Based on the first target capacitance value and all the second target capacitance values, a current capacitance value of the super capacitor is determined.

[0027] Beneficial effects of the present invention: The door control system and method proposed in the present invention can use the backup power supply to power the corresponding regional controller when the battery unit of the whole vehicle is abnormal, effectively reducing safety hazards. In addition, by setting at least two regional controllers, it is possible to achieve partitioned control of the target door components, that is, each regional controller controls the connected target door components, and each regional controller is isolated from each other. Compared with the method of using a single controller to control all target door components, this partition control or isolation control method can effectively avoid the situation where all target door components cannot be controlled due to the abnormality of a single controller. In addition, by setting a corresponding backup power supply for each regional controller, it is possible to achieve independent power backup for each regional controller, and the power supply requirement or energy storage requirement for the backup power supply can be reduced. It can be understood that when one or more battery units of the whole vehicle are abnormal, the backup power supply corresponding to the abnormal battery unit of the whole vehicle can be used to power the regional controller, and the remaining normal battery units of the whole vehicle can remain powered. Compared with the method of using a single backup power supply to power the controller and all target door components, this method greatly reduces the power supply requirements for the backup power supply, that is, each backup power supply only needs to meet the power supply needs of its corresponding regional controller and target door components, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a door control system provided by an embodiment of the present invention;

[0029] Figure 2 Another schematic diagram of the structure of a door control system provided in one embodiment of the present invention;

[0030] Figure 3 A schematic structural diagram of an extended embodiment of a door control system provided by an embodiment of the present invention;

[0031] Figure 4 is a flow chart of a door control method provided by an embodiment of the present invention;

[0032] Figure 5 It is a structural schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0035] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0036] See also Figure 1 , Figure 1 A schematic diagram of a door control system provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the system comprises:

[0037] At least two zone controllers (VIU) (such as Figure 1Area controller A, area controller B, etc.), vehicle battery unit (such as Figure 1 Vehicle battery unit A, vehicle battery unit B, etc.), and backup power supply (such as Figure 1 The backup power supply A, backup power supply B, etc.), the regional controllers correspond to the vehicle battery unit and the backup power supply respectively;

[0038] There is a power channel between the vehicle battery unit and the corresponding regional controller, and the vehicle battery unit supplies power to the regional controller through the corresponding power channel. The regional controller is connected to at least one target door component (such as Figure 1 Target door components A, target door components B, target door components F, target door components G, etc.) are connected to control the target door components, and there are differences between the target door components controlled by each of the zone controllers, and all the target door components include door handle components and door lock components of the vehicle;

[0039] The backup power supply is arranged in the corresponding power supply channel to supply power to the corresponding regional controller when the battery unit of the whole vehicle is abnormal.

[0040] Specifically, the regional controller corresponds one-to-one to the battery unit of the entire vehicle, and the regional controller corresponds one-to-one to the backup power supply.

[0041] It should be noted that the vehicle power supply system includes a plurality of vehicle battery units, and the plurality of vehicle battery units are independent of each other. Each of the regional controllers is powered by an independent vehicle battery unit. When any vehicle battery unit is abnormal, the backup power supply corresponding to the regional controller supplies power to the regional controller, which has strong independence and isolation, and effectively improves the stability of power backup. For example: assuming that a backup power supply is abnormal, then, through the above isolation setting, it can avoid affecting the backup power supply of other regional controllers.

[0042] Moreover, by dividing the vehicle power supply system into a plurality of independent vehicle battery units and using independent vehicle battery units to power the corresponding regional controllers, it can help to improve the stability of the power supply and reduce the power supply requirements for the backup power supply. For example: when a vehicle collides at high speed, a part of the vehicle power supply system becomes abnormal, while the rest can be powered normally, then, by adopting the method in the above-mentioned embodiment, that is, the isolated power supply method, it can be ensured that the vehicle battery units that can be powered normally in the vehicle power supply system continue to supply power to the corresponding regional controller (it can be understood that the power supply of the vehicle battery units is more stable than that of the backup power supply). For the abnormal vehicle battery units, the backup power supply is used to power the corresponding regional controller to avoid power failure of the regional controller. This method greatly reduces the power supply requirements and energy storage requirements for the backup power supply (it can be understood that the power supply requirements correspond to the energy storage requirements).

[0043] It should also be noted that a preset power management system can be used to monitor the voltage of the battery cells of the entire vehicle. When the voltage of the battery cells of the entire vehicle drops to a preset voltage threshold, it is determined that an abnormality has occurred in the battery cells of the entire vehicle, and the backup power supply is used to power the corresponding regional controller.

[0044] Please refer to Figure 2 The system further includes: an airbag controller (ABM), and at least two area controllers include: a first area controller VIU1, a second area controller VIU2, and a third area controller VIU3. It should be noted that by setting the first area controller VIU1, the second area controller VIU2, and the third area controller VIU3, the zoning control requirements for the target door components can be fully met and the control efficiency can be improved.

[0045] The first area controller supplies power to the airbag controller through a preset power line; the airbag controller is used to detect a collision of the vehicle, and when it is determined that the vehicle has collided, sends a collision signal to the first area controller;

[0046] The first zone controller is used to forward the collision signal to the second zone controller and the third zone controller respectively, and the collision signal is used to instruct the first zone controller, the second zone controller, and the third zone controller to perform target control operations, and the target control operations include popping out a connected door handle (hidden door handle) and unlocking a connected door lock.

[0047] It should be noted that Figure 2The Power in it represents the power interface, the HSD represents the power output interface, and the line between Power and HSD is the power line. In the above embodiment, the first area controller is used to power the airbag controller, so there is no need to set up an additional power supply for the airbag controller. In addition, by using the airbag controller to send a collision signal to the first area controller, and using the first area controller to forward the collision signal to the second area controller and the third area controller respectively, it is possible to automatically pop out the door handle and unlock the door lock in the event of a vehicle collision (high-speed collision), so as to facilitate the rapid evacuation of people in the vehicle and facilitate on-site rescue by outsiders. When a high-speed collision occurs and causes abnormal power supply to the battery unit of the entire vehicle, the corresponding backup power supply is used to provide driving capability for the area controller to pop out the door handle and unlock the door lock.

[0048] In some embodiments, the collision signal includes: a collision CAN signal and a first collision hard-line signal, the collision CAN signal is transmitted via a CAN bus between the airbag controller and the first zone controller, and the first collision hard-line signal is transmitted via a hard line between the airbag controller and the first zone controller.

[0049] It should be noted that Figure 2 CAN in the figure represents a CAN (Controller Area Network) interface. ABM transmits the collision CAN signal to VIU1 through its CAN interface, and VIU1 forwards the collision CAN signal to VIU2 and VIU3 respectively through its CAN interface. FI represents a signal transmission interface.

[0050] It should also be noted that the collision CAN signal is obtained based on the first collision hard-wire signal, that is, by packaging the first collision hard-wire signal to generate a CAN message, that is, a collision CAN signal. The collision CAN signal and the first collision hard-wire signal of the above embodiment constitute redundancy, which can effectively improve the control accuracy of the door handle and door lock in the event of a vehicle collision. It can be understood that if one of the collision CAN signal and the first collision hard-wire signal has a transmission abnormality, the other signal can also instruct the corresponding regional controller to perform the target control operation, which is safer.

[0051] The first regional controller is used to perform the target control operation when receiving the collision CAN signal and / or the first collision hard-line signal; when receiving the CAN signal, forward the collision CAN signal to the second regional controller and the third regional controller respectively; when receiving the first collision hard-line signal, convert the first collision hard-line signal into a first Ethernet signal, and transmit the first Ethernet signal to the second regional controller and the third regional controller respectively;

[0052] The second zone controller and the third zone controller perform the target control operation when receiving the collision CAN signal and / or the first Ethernet signal.

[0053] It should be noted that, through the above method, the control accuracy of each regional controller in the event of a vehicle collision can be improved. The first Ethernet signal is transmitted by the first regional controller to the second regional controller and the third regional controller through its ETH (Ethernet) interface. Figure 2 ETH in the figure is the Ethernet interface. The first regional controller, the second regional controller and the third regional controller are connected in pairs, that is, connected through their respective Ethernet interfaces to form a ring network topology to achieve the transmission of the networked collision hard-line signal (such as the first Ethernet signal, etc.), so as to ensure that each regional controller can perform the target control operation in a timely manner as much as possible.

[0054] In some embodiments, the airbag controller is further configured to send a second collision hardwire signal to the third zone controller, the second collision hardwire signal being transmitted via a hardwire between the airbag controller and the third zone controller;

[0055] The third regional controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second collision hard-line signal; when receiving the second collision hard-line signal, convert the second collision hard-line signal into a second Ethernet signal, and transmit the second Ethernet signal to the first regional controller and the second regional controller respectively;

[0056] The first zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first collision hard-line signal, and the second Ethernet signal; the second zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second Ethernet signal.

[0057] It should be noted that, through the above method, the timeliness of each regional controller in executing the target control operation can be further ensured, thereby avoiding the situation where the regional controller cannot execute the target control operation in time due to abnormal signal transmission line.

[0058] Please refer to Figure 2In some embodiments, the first zone controller is respectively connected to the left front door lock component, the left front door handle component, the left rear door lock component, and the left rear door handle component of the vehicle; the second zone controller is respectively connected to the right front door lock component and the right front door handle component of the vehicle; the third zone controller is respectively connected to the right rear door lock component and the right rear door handle component of the vehicle.

[0059] It should be noted that this deployment method can better achieve control over multiple door handle components and door lock components.

[0060] In some embodiments, the door handle component includes: a door handle drive motor and a Hall sensor, the door handle drive motor is used to drive the door handle to hide or pop out, the Hall sensor is used to detect the position of the door handle, the door handle drive motor and the Hall sensor are respectively connected to the corresponding zone controller; the door lock component includes a door lock motor, which is used to drive the vehicle's door lock to lock or unlock, and the door lock motor is connected to the corresponding zone controller. Figure 2 HB in the figure indicates the motor connection port, GND indicates the ground interface, and M device indicates the motor.

[0061] It should be noted that the above configuration can facilitate the control of the door handle component and the door lock component, that is, the door handle is controlled by the door handle driving motor. During the control process, the Hall sensor is used to monitor the position of the door handle in real time, such as the pop-up distance of the door handle, to ensure that the door handle can be smoothly popped out or hidden. In addition, the door lock of the vehicle is controlled by the door lock motor to complete the locking or unlocking of the door lock.

[0062] In some embodiments, the door lock component further includes: a child lock motor, which is used to drive the child lock to lock or unlock, and the child lock motor is connected to the corresponding zone controller. Figure 2 The left rear door lock component and the right rear door lock component both include a door lock motor and a child lock motor.

[0063] It should be noted that, in order to be more suitable for practical applications, the above embodiment also involves the control of the child lock motor. Compared with only controlling the door lock, this method is more suitable for practical applications.

[0064] In some embodiments, the backup power source is a supercapacitor, and the capacitance value of the supercapacitor is determined based on a target load, and the target load includes: a zone controller corresponding to the supercapacitor and a target door component connected to the zone controller.

[0065] It should be noted that a supercapacitor is a capacitor with a high capacitance. By setting the backup power supply to a supercapacitor, active discharge of the backup power supply can be achieved, and passive discharge of the backup power supply can also be achieved, which greatly increases the flexibility of control. Specifically, regarding active discharge: the supercapacitor can stabilize the voltage and provide instantaneous current support. When the battery unit of the entire vehicle is abnormal or the voltage drops, the supercapacitor can actively and quickly release the stored electrical energy to power the corresponding regional controller to ensure that the regional controller performs the corresponding target control operation.

[0066] Regarding passive discharge: the preset power management system can be used to monitor the voltage of the battery cells of the entire vehicle. When the voltage of the battery cells of the entire vehicle drops to a preset voltage threshold, it is determined that an abnormality has occurred in the battery cells of the entire vehicle, and the supercapacitor is controlled to supply power to the corresponding regional controller.

[0067] It should be mentioned that in order to avoid false signal triggering, the above-mentioned processing of hard-wired signals, such as the first collision hard-wired signal and the second collision hard-wired signal, can determine that the vehicle has collided when the first collision hard-wired signal or the second collision hard-wired signal is continuously received, thereby executing the target control operation.

[0068] In addition to the above-mentioned method of using multiple zone controllers to control the target door components, the preset door actuator (DAU) can also be used to control each target door component separately. The following explains the method of using the preset door actuator (DAU) to control each target door component separately.

[0069] Please refer to Figure 3As an extended embodiment of the present invention, first, all target door components (including door handles, door locks, and child locks) are connected to the preset microcontroller (MCU) in the DAU, and the MCU is connected to the vehicle power system (KL30 power). A supercapacitor is set on the power channel between the MCU and the vehicle power system. The MCU is connected to the VIU via a CAN transceiver, and the ABM is connected to the MCU. Under normal working conditions, the VIU transmits control instructions for each target door component to the MCU via the CAN transceiver. When the vehicle power system is abnormal, that is, the KL30 power supply is abnormal, the VIU fails, and the supercapacitor connected to the MCU is used to power the MCU to ensure that the MCU controls each target door component. In this embodiment, the ABM has a separate power supply. Therefore, the ABM can still perform collision detection on the vehicle when the vehicle power system is abnormal, and send a target collision signal to the MCU. The target collision signal is a hard-line signal. This method can also use the supercapacitor to charge the MCU when the vehicle power system is abnormal or the vehicle collides, thereby achieving control of the target door components, such as door handle popping out, door lock unlocking, and child lock unlocking.

[0070] The vehicle door control method provided by the present invention is described below. The vehicle door control method described below and the vehicle door control system described above can be referenced to each other.

[0071] Please refer to Figure 4 The door control method provided in this embodiment based on the door control system as described in any one of the above items includes:

[0072] S410: When the vehicle battery unit is abnormal, the backup power supply is used to supply power to the corresponding regional controller. The vehicle door control method in this embodiment can effectively reduce the safety hazards caused by abnormal vehicle battery power supply and realize continuous and stable power supply to the regional controller.

[0073] In some embodiments, the backup power supply is a supercapacitor, and the step of determining the capacitance value of the supercapacitor includes:

[0074] 1. Obtain target parameters, the target parameters including: a first parameter of a target area controller, and a second parameter of a target door component connected to the target area controller, the target area controller refers to the area controller corresponding to the current supercapacitor, the first parameter including: a first maximum operating current, a first operating time, a first rated voltage, and a first minimum operating voltage of the target area controller, the second parameter including: a second maximum operating current, a second operating time, a second rated voltage, and a second minimum operating voltage of the target door component connected to the target area controller.

[0075] 2. Determine the product of the first maximum operating current and the first operating time as a first intermediate value; determine the difference between the first rated voltage and the first minimum operating voltage as a second intermediate value; and determine the ratio between the first intermediate value and the second intermediate value as a first target capacitance value.

[0076] 3. The product of the second maximum operating current and the second operating time is determined as a third intermediate value; the difference between the second rated voltage and the second minimum operating voltage is determined as a fourth intermediate value; and the ratio between the third intermediate value and the fourth intermediate value is determined as a second target capacitance value. It should be noted that each target door component connected to the zone controller corresponds to a second target capacitance value.

[0077] 4. Determine the current capacitance value of the supercapacitor based on the first target capacitance value and all of the second target capacitance values.

[0078] It should be noted that, for the second and third area controllers, the capacitance value of their supercapacitors is the sum of their first target capacitance value and all second target capacitance values. Specifically, the step of obtaining the capacitance value of the supercapacitor corresponding to the second area controller includes: summing the first target capacitance value corresponding to the second area controller and all second target capacitance values ​​to obtain the capacitance value of the supercapacitor of the second area controller. The step of obtaining the capacitance value of the supercapacitor corresponding to the third area controller includes: summing the first target capacitance value corresponding to the third area controller and all second target capacitance values ​​to obtain the capacitance value of the supercapacitor of the third area controller.

[0079] It should also be noted that for the first regional controller, the third target capacitance value of the ABM needs to be calculated. The calculation of the third target capacitance value can refer to the above-mentioned calculation method for the first target capacitance value and the second target capacitance value. Specifically, the third maximum operating current, the third operating time, the third rated voltage, and the third minimum operating voltage of the ABM are obtained; the product of the third maximum operating current and the third operating time is determined as the fifth intermediate value; the difference between the third rated voltage and the third minimum operating voltage is determined as the sixth intermediate value; the ratio between the fifth intermediate value and the sixth intermediate value is determined as the third target capacitance value. The step of obtaining the capacitance value of the supercapacitor corresponding to the first regional controller includes: summing the third target capacitance value, the first target capacitance value corresponding to the first regional controller, and all the second target capacitance values ​​to obtain the capacitance value of the supercapacitor of the first regional controller. The capacitance value of the supercapacitor obtained in the above manner has high accuracy, fully meets the control requirements for the target door components in the event of a vehicle collision, and has low cost.

[0080] It should be noted that the mathematical expression for obtaining the target capacitance values ​​(such as the first target capacitance value, the second target capacitance value, and the third target capacitance value) is:

[0081]

[0082] Wherein, C represents the target capacitance value, I represents the maximum operating current, "×" represents the multiplication sign, t2 represents the operating time (such as the time required for the zone controller to perform the target control operation, the time for the door lock to be unlocked, the time for the child lock to be unlocked, and the time for the door handle to pop out, etc.), t1=0, U1 represents the rated voltage, and U2 represents the minimum operating voltage.

[0083] The target capacitance values ​​are exemplified in Table 1 below:

[0084] Table 1 Example of target capacitance values

[0085]

[0086] Exemplarily, the minimum operating voltage of each target load in Table 1 is 9V.

[0087] In addition, the capacitance value of the supercapacitor in the above-mentioned extended embodiment can also be calculated in the above-mentioned manner. The difference is that it is necessary to calculate the target capacitance value corresponding to the DAU, and add the target capacitance value corresponding to the DAU to the target capacitance values ​​corresponding to all target door components to obtain the capacitance value of the supercapacitor in the extended embodiment, which will not be repeated here.

[0088] In some embodiments, an electronic device is also provided, which may be a server, and its internal structure is shown in FIG. Figure 5 As shown. The electronic device includes a processor, a memory, a network interface and a database connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external client via a network connection. When the computer program is executed by the processor, the functions or steps on the server side of the above method are implemented.

[0089] In some embodiments, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: when the battery unit of the entire vehicle is abnormal, the backup power supply is used to power the corresponding regional controller.

[0090] In some embodiments, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: when the battery unit of the entire vehicle is abnormal, the backup power supply is used to power the corresponding regional controller.

[0091] It should be noted that the above functions or steps that can be implemented by the computer-readable storage medium or electronic device can refer to the relevant descriptions on the server side and the client side in the aforementioned method embodiment. To avoid repetition, they will not be described one by one here.

[0092] The flow chart and block diagram in the accompanying drawings illustrate the possible implementation architecture, function and operation of the method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0093] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A door control system, characterized in that: include: At least two regional controllers, a whole vehicle battery unit, and a backup power supply, wherein the regional controllers correspond to the whole vehicle battery unit and the backup power supply respectively; A power channel is provided between the vehicle battery unit and the corresponding regional controller, and the vehicle battery unit supplies power to the regional controller through the corresponding power channel. The regional controller is connected to at least one target door component to control the connected target door component. There are differences between the target door components controlled by each regional controller, and all the target door components include a door handle component and a door lock component of the vehicle; The backup power supply is arranged in the corresponding power supply channel to supply power to the corresponding regional controller when the battery unit of the whole vehicle is abnormal.

2. The door control system according to claim 1, characterized in that: Also includes: The airbag controller, at least two regional controllers include: a first regional controller, a second regional controller, and a third regional controller; The first area controller supplies power to the airbag controller through a preset power line; the airbag controller is used to detect a collision of the vehicle, and when it is determined that the vehicle has collided, sends a collision signal to the first area controller; The first zone controller is used to forward the collision signal to the second zone controller and the third zone controller respectively, and the collision signal is used to instruct the first zone controller, the second zone controller, and the third zone controller to perform target control operations, and the target control operations include popping out the connected door handle and unlocking the connected door lock.

3. The door control system according to claim 2, characterized in that: The collision signal includes: a collision CAN signal and a first collision hard-line signal, wherein the collision CAN signal is transmitted via a CAN bus between the airbag controller and the first regional controller, and the first collision hard-line signal is transmitted via a hard line between the airbag controller and the first regional controller; The first regional controller is used to perform the target control operation when receiving the collision CAN signal and / or the first collision hard-line signal; when receiving the CAN signal, forward the collision CAN signal to the second regional controller and the third regional controller respectively; when receiving the first collision hard-line signal, convert the first collision hard-line signal into a first Ethernet signal, and transmit the first Ethernet signal to the second regional controller and the third regional controller respectively; The second zone controller and the third zone controller perform the target control operation when receiving the collision CAN signal and / or the first Ethernet signal.

4. The door control system according to claim 3, characterized in that: The airbag controller is further used to send a second collision hard-line signal to the third zone controller, and the second collision hard-line signal is transmitted through a hard line between the airbag controller and the third zone controller; The third regional controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second collision hard-line signal; when receiving the second collision hard-line signal, convert the second collision hard-line signal into a second Ethernet signal, and transmit the second Ethernet signal to the first regional controller and the second regional controller respectively; The first zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first collision hard-line signal, and the second Ethernet signal; the second zone controller is used to perform the target control operation when receiving at least one of the collision CAN signal, the first Ethernet signal, and the second Ethernet signal.

5. The vehicle door control system according to any one of claims 2 to 4, characterized in that: The first zone controller is respectively connected to the left front door lock component, the left front door handle component, the left rear door lock component, and the left rear door handle component of the vehicle; the second zone controller is respectively connected to the right front door lock component and the right front door handle component of the vehicle; the third zone controller is respectively connected to the right rear door lock component and the right rear door handle component of the vehicle.

6. The door control system according to claim 1, characterized in that: The door handle component includes: a door handle drive motor and a Hall sensor, the door handle drive motor is used to drive the door handle to hide or pop out, the Hall sensor is used to detect the position of the door handle, the door handle drive motor and the Hall sensor are respectively connected to the corresponding zone controller; the door lock component includes a door lock motor, which is used to drive the door lock of the vehicle to lock or unlock, and the door lock motor is connected to the corresponding zone controller.

7. The door control system according to claim 6, characterized in that: The door lock component also includes: a child lock motor, which is used to drive the child lock to lock or unlock, and the child lock motor is connected to the corresponding zone controller.

8. The door control system according to claim 1, characterized in that: The backup power supply is a supercapacitor, and the capacitance value of the supercapacitor is determined based on a target load, and the target load includes: a zone controller corresponding to the supercapacitor and a target door component connected to the zone controller.

9. A door control method based on the door control system according to any one of claims 1 to 8, characterized in that: include: When the battery unit of the entire vehicle is abnormal, the backup power supply is used to supply power to the corresponding regional controller.

10. The vehicle door control method according to claim 9, characterized in that: The backup power supply is a supercapacitor, and the step of determining the capacitance value of the supercapacitor includes: Obtaining target parameters, the target parameters including: a first parameter of a target area controller, and a second parameter of a target door component connected to the target area controller, the target area controller refers to a region controller corresponding to the current supercapacitor, the first parameter including: a first maximum operating current, a first operating time, a first rated voltage, and a first minimum operating voltage of the target area controller, the second parameter including: a second maximum operating current, a second operating time, a second rated voltage, and a second minimum operating voltage of the target door component connected to the target area controller; determining the product of the first maximum operating current and the first operating time as a first intermediate value; determining the difference between the first rated voltage and the first minimum operating voltage as a second intermediate value; and determining the ratio between the first intermediate value and the second intermediate value as a first target capacitance value; determining the product of the second maximum operating current and the second operating time as a third intermediate value; determining the difference between the second rated voltage and the second minimum operating voltage as a fourth intermediate value; and determining the ratio between the third intermediate value and the fourth intermediate value as a second target capacitance value; Based on the first target capacitance value and all the second target capacitance values, a current capacitance value of the super capacitor is determined.

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