A vehicle door lock control system, method, and vehicle

Abstract

The application discloses a vehicle door lock control system, method and vehicle, and relates to the technical field of vehicle safety. The system comprises a VIU, a CPM, a switching circuit, a door lock motor, a main power supply and a backup power supply. The VIU is connected with the door lock motor through the switching circuit, and the CPM is connected with the door lock motor. In the case that the main power supply is not powered off, the main power supply is used for charging the backup power supply, and supplying power to the VIU and the CPM. The CPM is used for controlling the switching circuit to be turned on. The VIU is used for sending a first door lock control signal to the door lock motor through the switching circuit. The door lock motor is used for controlling the vehicle door to be unlocked according to the first door lock control signal. In the case that the main power supply cannot supply power, the backup power supply supplies power to the CPM. The CPM is used for controlling the switching circuit to be turned off, sending a second door lock control signal to the door lock motor, and controlling the vehicle door to be unlocked according to the second door lock control signal. The system can reduce the safety risk that the vehicle door cannot be unlocked after a vehicle accident.

Description

Technical Field

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

[0002] In order to make new energy vehicles more beautiful, the door handles of new energy vehicles are designed as hidden door handles. However, when a serious accident occurs, the hidden door handles may not pop out and the doors may not be unlocked, which will prevent the people in the car from leaving the accident vehicle in a short time.

[0003] like Figure 1 The figure shows a schematic diagram of a redundant unlocking control circuit. The redundant unlocking module is connected in parallel to the control circuit. Unless the vehicle is involved in an accident, the redundant unlocking module does not interfere with the operation of the control circuit, and the power supply charges the redundant unlocking module's supercapacitor. In the event of an accident, if the line between the control circuit and the door lock is severed, the control circuit cannot successfully unlock the door, but the redundant unlocking module can still ensure the door is unlocked.

[0004] However, the copper wire of the cut circuit is exposed, and the exposed copper wire is short-circuited after being connected to the vehicle frame, resulting in the unlocking signal of the redundant unlocking module being unable to be transmitted to the door lock motor, or the unlocking signal issuing a locking command to the door lock through the locking circuit. At this time, even if the redundant unlocking module can work normally, it cannot unlock the vehicle door normally.

[0005] Therefore, the current redundant door unlocking structure still poses safety risks. Summary of the Invention

[0006] The present application provides a vehicle door lock control system, method, and vehicle, which can reduce the safety risk of vehicle doors being unable to unlock after a vehicle accident.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a vehicle door lock control system, the control system comprising: a vehicle information unit VIU, a security door control unit CPM, a switch circuit, a door lock motor, a main power supply and a backup power supply;

[0009] The VIU is connected to the door lock motor via the switch circuit, and the CPM is connected to the door lock motor;

[0010] When the main power supply is not cut off, the main power supply is used to charge the backup power supply and supply power to the VIU and the CPM. The CPM is used to control the switching circuit to be turned on. The VIU is used to send a first door lock control signal to the door lock motor through the switching circuit. The door lock motor is used to control the vehicle door to be unlocked according to the first door lock control signal.

[0011] When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM is used to control the switch circuit to disconnect and send a second door lock control signal to the door lock motor. The door lock motor is used to control the vehicle door to unlock according to the second door lock control signal.

[0012] In some possible implementations, the control system further includes: an inertial measurement unit IMU and an airbag system SRS;

[0013] The CPM is further configured to obtain a first collision result measured by the IMU and send the first collision result to the VIU;

[0014] The VIU is further configured to obtain a second collision result measured by the SRS, and determine a collision condition of the vehicle based on the first collision result and the second collision result;

[0015] The VIU is specifically configured to send a first door lock control signal to the door lock motor through the switch circuit when the collision condition of the vehicle indicates that the vehicle has collided.

[0016] In some possible implementations, the CPM is further configured to determine a connection status with the VIU;

[0017] The CPM is specifically configured to control the switch circuit to be disconnected and send a second door lock control signal to the door lock motor when the connection status between the CPM and the VIU indicates disconnection.

[0018] In some possible implementations, the CPM is specifically used to detect the pulse signal sent by the VIU every preset period to obtain a detection result. If the detection result indicates that the pulse signal sent by the VIU is not received, the connection status between the CPM and the VIU is determined to be disconnected; if the detection result indicates that the pulse signal sent by the VIU is received, the connection status between the CPM and the VIU is determined to be connected.

[0019] In some possible implementations, the switching circuit includes a switching tube and a diode connected in parallel; the anode of the diode is connected to the door lock motor, and the cathode of the diode is connected to the VIU; the first end of the switching tube is connected to the door lock motor, the second end of the switching tube is connected to the VIU, and the control end of the switching tube is connected to the CPM.

[0020] In a second aspect, the present application provides a vehicle, comprising: a vehicle information unit VIU, a security door control unit CPM, a switch circuit, a door lock motor, a main power supply, and a backup power supply;

[0021] In some possible implementations, the control system further includes: an inertial measurement unit IMU and an airbag system SRS;

[0022] The CPM is further configured to obtain a first collision result measured by the IMU and send the first collision result to the VIU;

[0023] The VIU is further configured to obtain a second collision result measured by the SRS, and determine a collision condition of the vehicle based on the first collision result and the second collision result;

[0024] The VIU is specifically configured to send a first door lock control signal to the door lock motor through the switch circuit when the collision condition of the vehicle indicates that the vehicle has collided.

[0025] In some possible implementations, the CPM is further configured to determine a connection status with the VIU;

[0026] The CPM is specifically configured to control the switch circuit to be disconnected and send a second door lock control signal to the door lock motor when the connection status between the CPM and the VIU indicates disconnection.

[0027] In some possible implementations, the CPM is specifically used to detect the pulse signal sent by the VIU every preset period to obtain a detection result. If the detection result indicates that the pulse signal sent by the VIU is not received, the connection status between the CPM and the VIU is determined to be disconnected; if the detection result indicates that the pulse signal sent by the VIU is received, the connection status between the CPM and the VIU is determined to be connected.

[0028] In some possible implementations, the switching circuit includes a switching tube and a diode connected in parallel; the anode of the diode is connected to the door lock motor, and the cathode of the diode is connected to the VIU; the first end of the switching tube is connected to the door lock motor, the second end of the switching tube is connected to the VIU, and the control end of the switching tube is connected to the CPM.

[0029] In a third aspect, the present application provides a vehicle door lock control method, which is applied to a vehicle information unit (VIU) and a security door control unit (CPM), wherein the VIU is connected to a door lock motor via a switch circuit, and the CPM is connected to the door lock motor. The method includes:

[0030] When the main power supply is not cut off, the main power supply is used to charge the backup power supply and to supply power to the VIU and the CPM. The CPM controls the switch circuit to be turned on, and the VIU sends a first door lock control signal to the door lock motor through the switch circuit, so that the door lock motor controls the vehicle door to be unlocked according to the first door lock control signal.

[0031] When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM controls the switch circuit to disconnect and sends a second door lock control signal to the door lock motor, so that the door lock motor controls the vehicle door to unlock according to the second door lock control signal.

[0032] In a fourth aspect, the present application provides a computing device, comprising a memory and a processor;

[0033] One or more computer programs are stored in the memory, and the one or more computer programs include instructions; when the instructions are executed by the processor, the computing device executes the method as described in the third aspect.

[0034] In a fifth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method as described in the third aspect.

[0035] It can be seen from the above technical solution that this application has at least the following beneficial effects:

[0036] The present application provides a vehicle door lock control system, comprising a vehicle information unit (VIU), a security door control unit (CPM), a switching circuit, a door lock motor, a main power supply, and a backup power supply. The VIU is connected to the door lock motor via the switching circuit, and the CPM is connected to the door lock motor. When the main power supply is not disconnected, the main power supply charges the backup power supply and supplies power to the VIU and CPM. The CPM is used to control the conduction of the switching circuit. The VIU is used to send a first door lock control signal to the door lock motor via the switching circuit. Upon receiving the first door lock control signal, the door lock motor controls the vehicle door to unlock. If the vehicle is in an accident or other malfunction that causes the main power supply to be unable to supply power, the VIU and CPM will not function, and thus will be unable to control the vehicle door to unlock. In this case, the backup power supply can supply power to the CPM, and the CPM first controls the switching circuit to disconnect. Even if the VIU's control signal line shorts and mistakenly sends a door lock signal, the door lock motor will not receive the signal, thereby reducing the possibility of accidental locking. The CPM then sends a second door lock control signal to the door lock motor, and the door lock motor controls the vehicle door to unlock based on the second door lock control signal. It can be seen that the control system can also control the door unlocking after a vehicle accident causes VIU abnormality, thereby improving the safety of vehicles with hidden door handles.

[0037] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of a technical feature, technical solution or beneficial effect in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a control circuit provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of a vehicle door lock control system provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of a switching circuit provided in an embodiment of the present application;

[0041] Figure 4 A flow chart of a method for controlling a vehicle door lock provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of a computing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The terms "first", "second" and "third" in this application specification and the accompanying drawings are used to distinguish different objects rather than to limit a specific order.

[0044] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0045] To make the description of the following embodiments clear and concise, a brief introduction to the related technologies is first given:

[0046] See also Figure 1 In the event of a vehicle accident, the signal line between the control circuit and the door lock motor may be cut off due to the accident, resulting in a short circuit. In the event of a short circuit, the door locking signal may be mistakenly triggered, resulting in the inability to open the door, increasing the safety risk of people in the car.

[0047] In view of this, the embodiment of the present application provides a vehicle door lock control system, such as Figure 2 The figure shows a schematic diagram of a vehicle door lock control system provided by an embodiment of the present application. The vehicle door lock control system includes: a vehicle information unit (VIU) 201, a safety door control unit (CPM) 202, a switch circuit 203, a door lock motor 204, a main power supply 205, and a backup power supply 206. The full name of the safety door control unit is Crash Power Module. The CPM 202 includes a motor control unit (MCU) and a backup power supply 206.

[0048] The main power supply 205 is connected to the backup power supply 206. When the main power supply 205 is not powered off, the main power supply 205 charges the backup power supply 206, and the main power supply 205 also supplies power to the VIU 201 and the CPM 205. In this way, if the main power supply 205 fails or the line between the main power supply 205 and the VIU 201 or the CPM 202 is disconnected, the backup power supply 206 can supply power to the VIU 201 and the CPM 202.

[0049] Wherein, a first voltage transformation circuit (not shown in the figure) can also be arranged between the main power supply 205 and the backup power supply 206, and a second voltage transformation circuit (not shown in the figure) can also be arranged in series at the output end of the backup power supply 206, for example, the second voltage transformation circuit is arranged between the backup power supply 206 and the CPM 202, or arranged between the backup power supply 206 and the VIU 201. In the case of normal main power supply, the first voltage transformation circuit adjusts the voltage output by the main power supply 205 to charge the backup power supply 206, and the second voltage transformation circuit is in an open circuit state and does not supply power to the subsequent circuit; in the case of abnormal main power supply 205 (including the case of disconnection between the subsequent circuit), the first voltage transformer is in an open circuit state, and the second voltage transformer adjusts the voltage output by the backup power supply 206 and outputs to the subsequent circuit, such as the VIU 201 and the CPM 202.

[0050] In the case that the main power supply 205 is not powered off, the CPM 202 controls the switch circuit 203 to be turned on, the VIU 201 sends a first door lock control signal to the door lock motor 204 through the switch circuit 203, and the door lock motor 204 receives the first door lock control signal and controls the vehicle door to be unlocked in response to the first door lock control signal.

[0051] In the case that the main power supply 205 cannot supply power (for example, the line between the main power supply 205 and the VIU 201 is disconnected, and the line between the main power supply 205 and the CPM 202 is disconnected), at this time, the backup power supply 206 can supply power to the CPM 202, the CPM 202 controls the switch circuit 203 to be turned off, and sends a second door lock control signal to the door lock motor 204, and the door lock motor 204 receives the second door lock control signal and controls the vehicle door to be unlocked. The CPM 202 controls the switch circuit 203 to be turned off, so that the VIU 201 will lose the control right of the door lock motor 204, therefore, even if there is a fault in the line between the VIU 201 and the door lock motor 204 (for example, the signal line of the vehicle door unlocking is short-circuited with the signal line of the vehicle door locking), the door lock motor 204 will not receive the signal mistakenly sent by the VIU 201, and further will not mistakenly lock the vehicle door, thereby improving the safety of the passengers in the vehicle in the case of an accident.

[0052] Wherein, the above embodiment is introduced by taking one door lock motor 204 as an example, when the vehicle includes multiple vehicle doors, the control logic of the door lock motor 204 corresponding to other vehicle doors is similar to the above embodiment, in some embodiments, the door lock motor 204 can also be replaced by a child lock motor, or the door lock motor 204 and the child lock can exist together, and the control logic of the child lock motor is the same as that of the door lock motor 204.

[0053] In some embodiments, the control system further includes an inertial measurement unit (IMU) and an airbag system (SRS). The CPM 202 may further obtain a first collision result measured by the IMU and transmit the first collision result to the VIU 201. The VIU 201 may further obtain a second collision result measured by the SRS and then determine a collision condition of the vehicle based on the second collision result and the first collision result obtained from the CPM 202. For example, if both the first collision result and the second collision result indicate that the vehicle has collided, the VIU 201 determines that the collision condition of the vehicle is that the vehicle has collided. If either the first collision result or the second collision result indicates that the vehicle has not collided, the VIU 201 determines that the collision condition of the vehicle is that the vehicle has not collided.

[0054] When the vehicle's collision condition indicates a collision, the VIU 201 sends a first door lock control signal to the door lock motor via the switch circuit 203, thereby automatically controlling the vehicle door to unlock. After the door is unlocked, the vehicle's hidden door handle automatically pops out, making it easier for users outside the vehicle to provide emergency assistance to passengers inside.

[0055] In some embodiments, CPM 202 can also determine the connection status between itself and VIU 201. When it is determined that the connection status between CPM 202 and VIU 201 indicates disconnection, the switch circuit 203 is controlled to disconnect, that is, the control loop of the VIU is disconnected, and a second door lock control signal is sent to the door lock motor 204.

[0056] Among them, when the connection status between CPM 202 and VIU 201 indicates that they are not connected, it indicates that VIU 201 may no longer be able to work normally. At this time, CPM 202 takes over the control of the door lock motor 204 from VIU 201. Since VIU 201 may no longer be able to work normally, in order to avoid VIU 201 from miscontrolling the door lock motor, CPM 202 controls the switch circuit 203 to be disconnected, thereby cutting off VIU 201's control over the door lock motor 204.

[0057] In some embodiments, CPM 202 may detect the pulse signal sent by VIU 201 at predetermined intervals to obtain a detection result. For example, VIU 201 may send a pulse signal to CPM 202 via the CAN bus. The predetermined interval may be 100 ms or 10 ms, and this application is not limited thereto. If the detection result indicates that the pulse signal sent by VIU 201 was not received, the connection status between CPM 202 and VIU 201 is determined to be disconnected. If the detection result indicates that the pulse signal sent by the VIU was received, the connection status between CPM 202 and VIU 201 is determined to be connected.

[0058] like Figure 3 As shown, this figure is a schematic diagram of a switching circuit provided in an embodiment of the present application. The switching circuit 203 may include a switching tube 301 and a diode 302 connected in parallel, wherein the anode of the diode 302 is connected to the door lock motor 204, the cathode of the diode 302 is connected to the VIU 201, the first end of the switching tube 301 is connected to the door lock motor 204, the second end of the switching tube 301 is connected to the VIU, and the control end of the switching tube 301 is connected to the CPM 202.

[0059] The switch tube 301 may be a MOS tube, such as an NMOS tube, a PMOS tube, etc. In other embodiments, the switch tube 301 may also be a component with a switching function, such as a relay.

[0060] Based on the above description, the present application provides a vehicle door lock control system, which includes a vehicle information unit (VIU), a security door control unit (CPM), a switching circuit, a door lock motor, a main power supply, and a backup power supply. The VIU is connected to the door lock motor via the switching circuit, and the CPM is connected to the door lock motor. When the main power supply is not disconnected, the main power supply charges the backup power supply and supplies power to the VIU and CPM. The CPM is used to control the conduction of the switching circuit. The VIU is used to send a first door lock control signal to the door lock motor via the switching circuit. After receiving the first door lock control signal, the door lock motor controls the vehicle door to unlock. If the vehicle is in an accident or other malfunction that causes the main power supply to be unable to supply power, the VIU and CPM will not function. Consequently, they will be unable to control the vehicle door unlocking. In this case, the backup power supply can supply power to the CPM. The CPM first controls the switching circuit to disconnect. Even if the VIU's control signal line shorts and mistakenly sends a door lock signal, the door lock motor will not receive the signal, thereby reducing the possibility of accidental locking. The CPM then sends a second door lock control signal to the door lock motor, and the door lock motor controls the vehicle door to unlock based on the second door lock control signal. It can be seen that the control system can also control the door unlocking after a vehicle accident causes VIU abnormality, thereby improving the safety of vehicles with hidden door handles.

[0061] The embodiment of the present application further provides a vehicle, comprising: a vehicle information unit VIU, a security door control unit CPM, a switch circuit, a door lock motor, a main power supply and a backup power supply;

[0062] In some possible implementations, the control system further includes: an inertial measurement unit IMU and an airbag system SRS;

[0063] The CPM is further configured to obtain a first collision result measured by the IMU and send the first collision result to the VIU;

[0064] The VIU is further configured to obtain a second collision result measured by the SRS, and determine a collision condition of the vehicle based on the first collision result and the second collision result;

[0065] The VIU is specifically configured to send a first door lock control signal to the door lock motor through the switch circuit when the collision condition of the vehicle indicates that the vehicle has collided.

[0066] In some possible implementations, the CPM is further configured to determine a connection status with the VIU;

[0067] The CPM is specifically configured to control the switch circuit to be disconnected and send a second door lock control signal to the door lock motor when the connection status between the CPM and the VIU indicates disconnection.

[0068] In some possible implementations, the CPM is specifically used to detect the pulse signal sent by the VIU every preset period to obtain a detection result. If the detection result indicates that the pulse signal sent by the VIU is not received, the connection status between the CPM and the VIU is determined to be disconnected; if the detection result indicates that the pulse signal sent by the VIU is received, the connection status between the CPM and the VIU is determined to be connected.

[0069] In some possible implementations, the switching circuit includes a switching tube and a diode connected in parallel; the anode of the diode is connected to the door lock motor, and the cathode of the diode is connected to the VIU; the first end of the switching tube is connected to the door lock motor, the second end of the switching tube is connected to the VIU, and the control end of the switching tube is connected to the CPM.

[0070] The vehicle provided in the embodiment of the present application is similar to the control system provided in the embodiment of the present application, and will not be repeated here.

[0071] The embodiment of the present application also provides a method for controlling a vehicle door lock, such as Figure 4 As shown in FIG. 1 , this figure is a flow chart of a method for controlling a vehicle door lock provided by an embodiment of the present application. The method is applied to a vehicle information unit VIU and a security door control unit CPM. The VIU is connected to a door lock motor via a switch circuit, and the CPM is connected to the door lock motor. The method includes:

[0072] S401. When the main power supply is not cut off, the main power supply is used to charge the backup power supply and supply power to the VIU and the CPM. The CPM controls the switching circuit to be turned on. The VIU sends a first door lock control signal to the door lock motor through the switching circuit, so that the door lock motor controls the vehicle door to be unlocked according to the first door lock control signal.

[0073] S402. When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM controls the switch circuit to disconnect and sends a second door lock control signal to the door lock motor, so that the door lock motor controls the vehicle door to unlock according to the second door lock control signal.

[0074] There is no specific order in which S401 and S402 are executed.

[0075] The present application also provides a computing device. Figure 5 As shown, this figure is a schematic diagram of a computing device provided by an embodiment of the present application, wherein the computing device 500 includes a bus 501, a processor 502, a communication interface 503, and a memory 504. The processor 502, the memory 504, and the communication interface 503 communicate with each other via the bus 501.

[0076] The bus 501 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0077] The processor 502 may be any one or more of a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (MP), or a digital signal processor (DSP).

[0078] The communication interface 503 is used for communicating with the outside.

[0079] The memory 504 may include volatile memory, such as random access memory (RAM). The memory 504 may also include non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid state drive (SSD).

[0080] The memory 504 stores executable codes, and the processor 502 executes the executable codes to perform the aforementioned vehicle door lock control method.

[0081] Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium can be any available medium capable of being stored by a computing device, or a data storage device such as a data center that contains one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, hard disk, or magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive). The computer-readable storage medium includes instructions that instruct the computing device to execute the aforementioned vehicle door lock control method.

[0082] The present application also provides a computer program product comprising one or more computer instructions that, when loaded and executed on a computing device, fully or partially generate the process or function described in the present application.

[0083] The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, or data center to another website, computer, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0084] When the computer program product is executed by a computer, the computer performs any of the aforementioned methods for controlling a vehicle door lock. The computer program product may be a software installation package, and when any of the aforementioned methods for controlling a vehicle door lock is required, the computer program product may be downloaded and executed on the computer.

[0085] The descriptions of the processes or structures corresponding to the above figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0086] The above description is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be included in the protection scope of the present application.

Claims

1. A vehicle door lock control system, characterized in that: The control system includes: a vehicle information unit VIU, a security door control unit CPM, a switch circuit, a door lock motor, a main power supply and a backup power supply; The VIU is connected to the door lock motor via the switch circuit, and the CPM is connected to the door lock motor; When the main power supply is not cut off, the main power supply is used to charge the backup power supply and supply power to the VIU and the CPM. The CPM is used to control the switching circuit to be turned on. The VIU is used to send a first door lock control signal to the door lock motor through the switching circuit. The door lock motor is used to control the vehicle door to be unlocked according to the first door lock control signal. When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM is used to control the switch circuit to disconnect and send a second door lock control signal to the door lock motor. The door lock motor is used to control the vehicle door to unlock according to the second door lock control signal.

2. The control system according to claim 1, characterized in that: The control system also includes: an inertial measurement unit IMU and an airbag system SRS; The CPM is further configured to obtain a first collision result measured by the IMU and send the first collision result to the VIU; The VIU is further configured to obtain a second collision result measured by the SRS, and determine a collision condition of the vehicle based on the first collision result and the second collision result; The VIU is specifically configured to send a first door lock control signal to the door lock motor through the switch circuit when the collision condition of the vehicle indicates that the vehicle has collided.

3. The control system according to claim 2, characterized in that: The CPM is further configured to determine a connection status with the VIU; The CPM is specifically configured to control the switch circuit to be disconnected and send a second door lock control signal to the door lock motor when the connection status between the CPM and the VIU indicates disconnection.

4. The control system according to claim 3, characterized in that: The CPM is specifically configured to detect the pulse signal sent by the VIU at every preset period to obtain a detection result. If the detection result indicates that the pulse signal sent by the VIU is not received, the connection status between the CPM and the VIU is determined to be disconnected; if the detection result indicates that the pulse signal sent by the VIU is received, the connection status between the CPM and the VIU is determined to be connected.

5. The control system according to claim 1, characterized in that: The switching circuit includes a switching tube and a diode connected in parallel; the anode of the diode is connected to the door lock motor, and the cathode of the diode is connected to the VIU; the first end of the switching tube is connected to the door lock motor, the second end of the switching tube is connected to the VIU, and the control end of the switching tube is connected to the CPM.

6. A vehicle, characterized in that: include: Vehicle information unit VIU, security door control unit CPM, switch circuit, door lock motor, main power supply and backup power supply; The VIU is connected to the door lock motor via the switch circuit, and the CPM is connected to the door lock motor; When the main power supply is not cut off, the main power supply is used to charge the backup power supply and supply power to the VIU and the CPM. The CPM is used to control the switching circuit to be turned on. The VIU is used to send a first door lock control signal to the door lock motor through the switching circuit. The door lock motor is used to control the vehicle door to be unlocked according to the first door lock control signal. When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM is used to control the switch circuit to disconnect and send a second door lock control signal to the door lock motor. The door lock motor is used to control the vehicle door to unlock according to the second door lock control signal.

7. The vehicle according to claim 6, characterized in that The vehicle also includes: an inertial measurement unit IMU and an airbag system SRS; The CPM is further configured to obtain a first collision result measured by the IMU and send the first collision result to the VIU; The VIU is further configured to obtain a second collision result measured by the SRS, and determine a collision condition of the vehicle based on the first collision result and the second collision result; The VIU is specifically configured to send a first door lock control signal to the door lock motor through the switch circuit when the collision condition of the vehicle indicates that the vehicle has collided.

8. The vehicle according to claim 7, characterized in that The CPM is further configured to determine a connection status with the VIU; The CPM is specifically configured to control the switch circuit to be disconnected and send a second door lock control signal to the door lock motor when the connection status between the CPM and the VIU indicates disconnection.

9. The vehicle according to claim 8, characterized in that The CPM is specifically configured to detect the pulse signal sent by the VIU at every preset period to obtain a detection result. If the detection result indicates that the pulse signal sent by the VIU is not received, the connection status between the CPM and the VIU is determined to be disconnected; if the detection result indicates that the pulse signal sent by the VIU is received, the connection status between the CPM and the VIU is determined to be connected.

10. A vehicle door lock control method, characterized in that: Applied to a vehicle information unit (VIU) and a security door control unit (CPM), the VIU is connected to a door lock motor via a switch circuit, and the CPM is connected to the door lock motor. The method includes: When the main power supply is not cut off, the main power supply is used to charge the backup power supply and to supply power to the VIU and the CPM. The CPM controls the switch circuit to be turned on, and the VIU sends a first door lock control signal to the door lock motor through the switch circuit, so that the door lock motor controls the vehicle door to be unlocked according to the first door lock control signal. When the main power supply fails to supply power, the backup power supply supplies power to the CPM, and the CPM controls the switch circuit to disconnect and sends a second door lock control signal to the door lock motor, so that the door lock motor controls the vehicle door to unlock according to the second door lock control signal.

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