Vehicle door unlocking control system and vehicle

Abstract

The utility model relates to a vehicle door unlocking control system and a vehicle, the system comprises a safety airbag module, a power supply module, a pressure sensor and a door and window controller, the power supply module comprises a first power supply module and a second power supply module, the first power supply module is used for supplying power to the safety airbag module and the door and window controller, and the second power supply module is used for supplying power to the pressure sensor; the second power supply module is used for supplying power to the door and window controller when the first power supply module is abnormal, the safety air bag module is used for sending a first collision signal to the door and window controller when the vehicle collides, and the pressure sensor is used for sending a second collision signal to the door and window controller when the vehicle collides. The door and window controller is used for controlling the door and window to be unlocked under the condition of receiving the first collision signal and / or the second collision signal; redundant detection of the collision signal is achieved, the accuracy of collision detection is improved, redundant power supply of the door and window controller is achieved, passengers in the vehicle can escape from the vehicle in time, and people outside the vehicle can be conveniently rescued in time.

Description

Technical Field

[0001] This application relates to the technical field of vehicle control, and particularly to a door unlocking control system and a vehicle. Background Art

[0002] The door provides a passage for the driver and passengers to enter and exit the vehicle, isolates external interference, reduces side impacts to a certain extent, and protects the occupants. During normal use of the vehicle, the door unlocking is controlled by the window and door controller. After the vehicle collides, the window and door controller receives the collision signal and executes door unlocking, thereby opening the door to facilitate the escape of the driver and passengers.

[0003] However, in extreme working conditions (for example, when the vehicle collides), the wiring harness of the original low-voltage power supply system of the vehicle is damaged due to external collisions or other reasons, resulting in the failure of the vehicle's entire low-voltage power supply system, which will cause the power supply of the window and door controller to be interrupted, thus unable to control the automatic unlocking of the door, resulting in the inability of the vehicle occupants to escape in an emergency and making it inconvenient for external personnel to rescue, easily causing injuries or even endangering lives.

[0004] Therefore, it is necessary to improve the current door unlocking control system. Summary of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, this application provides a door unlocking control system and a vehicle to solve the above technical problems.

[0006] A door unlocking control system provided by this application, the system includes: an airbag module, a power supply module, a pressure sensor, and a window and door controller; the power supply module includes a first power supply module and a second power supply module, the first power supply module is used to supply power to the airbag module and the window and door controller, and the second power supply module is used to supply power to the window and door controller when the first power supply module is abnormal; the airbag module is used to send a first collision signal to the window and door controller when the vehicle collides; the pressure sensor is used to send a second collision signal to the window and door controller when the vehicle collides; the window and door controller is used to control the window and door to unlock when receiving the first collision signal and / or the second collision signal.

[0007] In an embodiment of this application, the window and door controller includes: a power conversion module and an unlocking control module; the first power supply module or the second power supply module is used to supply power to the power conversion module; the power conversion module is used to supply power to the unlocking control module and the pressure sensor; the unlocking control module is used to control the window and door to unlock when receiving the first collision signal and / or the second collision signal.

[0008] In an embodiment of the present application, the number of the pressure sensors is multiple, at least one of the pressure sensors is installed on each vehicle door, each of the pressure sensors is connected to the power conversion module, and each of the pressure sensors is connected to the unlocking control module.

[0009] In an embodiment of the present application, the first power supply module includes: a power battery and a high-voltage low-voltage converter; the high-voltage low-voltage converter is configured to step down the output voltage of the power battery and supply power to the power conversion module through the stepped-down voltage.

[0010] In an embodiment of the present application, the second power supply module includes: a backup battery and a switch; the backup battery is connected to one end of the switch, the other end of the switch is connected to the power conversion module, and the backup battery is connected to the high-voltage low-voltage converter; the switch is in an open state when the power supply line of the power battery is normally powered, or in a closed state when the power supply line of the power battery is abnormally powered.

[0011] In an embodiment of the present application, the second power supply module includes: a backup battery and a selection module; one end of the selection module is connected to the power conversion module, and the other end of the selection module is connected to the high-voltage low-voltage converter or the backup battery; the selection module is configured to automatically select the power supply line with a higher supply voltage among the power supply line of the power battery and the power supply line of the backup battery.

[0012] In an embodiment of the present application, the airbag module includes a collision detector and an airbag body, the collision signal of the pressure sensor is sent to the door and window controller in the form of a controller area network signal, and the collision signal of the collision detector is sent to the door and window controller in the form of a controller area network signal.

[0013] According to one aspect of the embodiments of the present application, a vehicle is provided, and the vehicle includes the door unlocking control system as described above.

[0014] Beneficial effects of the present application: The present application sets a first power supply module and a second power supply module, and the first power supply module is used to supply power to the airbag module and the door and window controller, and the second power supply module is used to supply power to the door and window controller when the first power supply module is abnormal, and performs collision detection simultaneously through the airbag module and the pressure sensor to realize redundant detection of collision signals. When at least one of the airbag module and the pressure sensor detects that the vehicle has collided, the door and window controller controls the doors and windows to unlock, thereby improving the accuracy of collision detection, avoiding the situation where the vehicle collides but the doors cannot be automatically unlocked due to detection errors, thereby aggravating the casualties of the occupants in the vehicle; when the first power supply module is abnormal, the second power supply module supplies power to the door and window controller, performs collision detection on the vehicle through the pressure sensor, and when the pressure sensor detects that the vehicle has collided, the door and window controller controls the doors and windows to unlock, thereby realizing redundant power supply of the door and window controller. Even when the first power supply module is abnormal, the power supply of the door and window controller is not interrupted, and the door and window controller can still control the doors and windows to automatically unlock, which is conducive to the occupants in the vehicle to escape from the vehicle in time and convenient for people outside the vehicle to rescue in time.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 Schematic diagram of a door unlocking control system shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0018] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, 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 application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0019] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present application. Therefore, only the components related to the present application are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0020] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application 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 application difficult to understand.

[0021] In an embodiment of the present application, the door unlocking control system includes: an airbag module, a power supply module, a pressure sensor, and a door and window controller; the power supply module includes a first power supply module and a second power supply module. The first power supply module is used to supply power to the airbag module and the door and window controller, and the second power supply module is used to supply power to the door and window controller when the first power supply module is abnormal; the airbag module is used to send a first collision signal to the door and window controller when a vehicle collision occurs; the pressure sensor is used to send a second collision signal to the door and window controller when a vehicle collision occurs; the door and window controller is used to control the door and window to unlock when receiving the first collision signal and / or the second collision signal.

[0022] In this embodiment, the airbag module includes a collision detector and an airbag body. Among them, the collision detector detects whether a vehicle collision occurs through sensors provided on the vehicle body. The airbag body includes components such as an airbag unlocking control module and a gas generator. The airbag unlocking control module calculates the airbag inflation time and pressure according to the severity of the collision, and the gas generator is responsible for generating gas to fill the airbag.

[0023] In this embodiment, a first power supply module and a second power supply module are provided, and the first power supply module is used to supply power to the airbag module and the door and window controller, and the second power supply module is used to supply power to the door and window controller when the first power supply module is abnormal, and collision detection is performed simultaneously through the airbag module and the pressure sensor, so as to realize redundant detection of collision signals. When at least one of the airbag module and the pressure sensor detects that the vehicle has collided, the door and window controller controls the door and window to be unlocked, thereby improving the accuracy of collision detection, and avoiding the situation that the vehicle collides but the doors cannot be automatically unlocked due to detection errors, thereby aggravating the casualties of the occupants in the vehicle; when the first power supply module is abnormal, the second power supply module supplies power to the door and window controller, collision detection is performed on the vehicle through the pressure sensor, and when the pressure sensor detects that the vehicle has collided, the door and window controller controls the door and window to be unlocked, thereby realizing redundant power supply of the door and window controller, and even when the first power supply module is abnormal, the power supply of the door and window controller is not interrupted, and the door and window controller can still control the door and window to be automatically unlocked, which is conducive to the occupants in the vehicle to escape from the vehicle in time and convenient for the people outside the vehicle to rescue in time.

[0024] In one embodiment of the present application, the door and window controller includes: a power conversion module and an unlocking control module; the first power supply module or the second power supply module is used to supply power to the power conversion module; the power conversion module is used to supply power to the unlocking control module and the pressure sensor; the unlocking control module is used to control the unlocking of the doors and windows when a first collision signal and / or a second collision signal is received.

[0025] In this embodiment, when the first power supply module supplies power normally, the power conversion module converts the power supply voltage of the first power supply module and supplies power to the pressure sensor and the unlocking control module through the converted voltage, thereby ensuring the normal operation of the pressure sensor and the unlocking control module; when the first power supply module supplies power abnormally, the power conversion module converts the power supply voltage of the second power supply module and supplies power to the pressure sensor and the unlocking control module through the converted voltage, thereby ensuring the normal operation of the pressure sensor and the unlocking control module.

[0026] In one embodiment of the present application, there are multiple pressure sensors, at least one pressure sensor is installed on each vehicle door, each pressure sensor is connected to the power conversion module, and each pressure sensor is connected to the unlocking control module.

[0027] In this embodiment, a pressure sensor on each door is used to detect whether a door collides. If at least one door collides, a second collision signal is sent to the unlocking control module.

[0028] In an embodiment of the present application, the first power supply module includes: a power battery and a high-voltage low-voltage converter; the high-voltage low-voltage converter is used to step down the output voltage of the power battery and supply power to the power conversion module through the stepped-down voltage.

[0029] In this embodiment, when the first power supply module supplies power normally, the power conversion module converts the output voltage of the high-voltage low-voltage converter and supplies power to the pressure sensor and the unlocking control module through the stepped-down voltage, ensuring the normal operation of the pressure sensor and the unlocking control module.

[0030] In this embodiment, the unlocking control module can be composed of an MCU (Microcontroller Unit, microcontroller) or an STM (STMicroelectronics, STMicroelectronics microcontroller chip), etc., and specific limitations are not made here.

[0031] In an embodiment of the present application, the second power supply module includes: a backup battery and a switch; the backup battery is connected to one end of the switch, the other end of the switch is connected to the power conversion module, and the backup battery is connected to the high-voltage low-voltage converter; the switch is in an open state when the power supply line of the power battery supplies power normally, or in a closed state when the power supply line of the power battery supplies power abnormally.

[0032] In this embodiment, the backup battery can be a rechargeable battery less than or equal to a preset battery capacity. For example, the preset battery capacity is 500 mAh. The switch can be an automatic switch.

[0033] In this embodiment, when the power supply line of the power battery supplies power normally, the power supply line of the power battery supplies power to the door and window controller and the airbag module. At this time, the backup battery is charged through the high-voltage low-voltage converter or the backup battery has been charged. During this process, the control switch is turned off to prevent the backup battery from supplying power to the door and window controller.

[0034] In this embodiment, when the power supply line of the power battery supplies power abnormally (for example, the power supply line is damaged and the supply voltage is zero), the output voltage of the high-voltage low-voltage converter is less than the preset voltage threshold, and the power supply line of the power battery cannot supply power normally. Then the control switch is closed, and the backup battery is connected to the power conversion module to realize supplying power to the door and window controller and the pressure sensor through the backup battery.

[0035] In an embodiment of the present application, the second power supply module includes: a backup battery and a selection module; one end of the selection module is connected to the power conversion module, and the other end of the selection module is connected to the high-voltage low-voltage converter or the backup battery; the selection module is used to automatically select the power supply line with a higher supply voltage between the power supply line of the power battery and the power supply line of the backup battery.

[0036] In this embodiment, the backup battery can also meet the power supply requirements of the door and window controller and the pressure sensor by means of regular replacement. By setting a voltage sensor in the power supply line of the power battery to detect whether the power supply line of the power battery is abnormally powered. If the voltage in the power supply line of the power battery is within the preset voltage range, it is determined that the power supply line of the power battery is normally powered. If the voltage in the power supply line of the power battery is not within the preset voltage range, it is determined that the power supply line of the power battery is abnormally powered. By setting a voltage sensor in the power supply line of the backup battery to detect whether the power supply line of the backup battery is abnormally powered. If the voltage in the power supply line of the backup battery is within the preset voltage range, it is determined that the power supply line of the backup battery is normally powered. If the voltage in the power supply line of the backup battery is not within the preset voltage range, it is determined that the power supply line of the backup battery is abnormally powered.

[0037] In this embodiment, if both the power supply line of the power battery and the power supply line of the backup battery are normally powered, the power supply line with the higher supply voltage among the power supply line of the power battery and the power supply line of the backup battery is selected as the target power supply line, and the other end of the selection module is controlled to be connected to the target power supply line; if only one of the power supply line of the power battery and the power supply line of the backup battery is normally powered, the other end of the selection module is controlled to be connected to the normally powered power supply line.

[0038] In this embodiment, the selection module can be an automatic selection switch. The automatic selection switch automatically selects the power supply line according to the determination result of whether the power supply line of the power battery is normally powered and the determination result of whether the power supply line of the backup battery is normally powered, so as to realize the automatic switching of the power supply line.

[0039] In an embodiment of the present application, the airbag module includes a collision detector and an airbag body. The collision signal of the pressure sensor is sent to the door and window controller in the form of a controller area network signal, and the collision signal detected by the collision detector is sent to the door and window controller in the form of a controller area network signal.

[0040] In this embodiment, the pressure sensor is connected to the door and window controller through a CAN (Controller Area Network) bus, and the airbag module is connected to the door and window controller through a CAN bus.

[0041] In this embodiment, after the collision detector detects that the vehicle body has collided, the collision signal is sent to the door and window controller in the form of a controller area network signal. After the pressure sensor detects that the door has collided, the collision signal is sent to the door and window controller in the form of a controller area network signal.

[0042] The embodiment of the present application also provides a vehicle, including the door unlocking control system provided in the above-mentioned embodiments.

[0043] Figure 1 It is a schematic diagram of a door unlocking control system shown in an exemplary embodiment of the present application.

[0044] Referring to Figure 1 As shown, the door unlocking control system includes a low-voltage power supply system 101, a redundant small battery 102, a safety airbag module (Airbag Module, ABM) 103, a pressure sensor 104, and a door and window controller 105. Among them, the low-voltage power supply system 101 is connected to the door and window controller 105 for supplying low voltage to the door and window controller 105. The low-voltage power supply system 101 is connected to the safety airbag module 103 for supplying low voltage to the safety airbag module 103. The redundant small battery 102 is connected to the door and window controller 105 for redundantly supplying power to the door and window controller 105 when the low-voltage power supply system 101 has abnormal power supply. The low-voltage power supply system 101 is connected to the redundant small battery 102 for charging the redundant small battery 102 when the low-voltage power supply system 101 has normal power supply. The safety airbag sensor 103 is connected to the door and window controller 105 for sending a first collision signal to the door and window sensor 105 when it detects that the vehicle has collided. The pressure sensor 104 is connected to the door and window controller 105 for sending a second collision signal to the door and window sensor 105 when it detects that the door has collided. The door and window controller 105 is used to control the door and window to unlock when it receives the first collision signal or the second collision signal. At the same time, the door and window controller 105 is connected to the pressure sensor 104 for supplying power to the pressure sensor 104.

[0045] In this embodiment, the low-voltage power supply system 101 includes a power battery and a high-voltage to low-voltage converter. The high-voltage to low-voltage converter converts the output voltage of the power battery into a voltage of 12V - 16V to supply power to the door and window controller 105 and the safety airbag module 103. The capacity of the redundant small battery 102 is less than or equal to a preset battery capacity. For example, the preset battery capacity is 500 mAh.

[0046] In this embodiment, the door and window controller 105 includes a power conversion module and an unlocking control module. When the low-voltage power supply system 101 has normal power supply, the power conversion module steps down the output voltage of the high-voltage to low-voltage converter and supplies power to the pressure sensor 104 through the stepped-down voltage. When the low-voltage power supply system 101 has abnormal power supply, the power conversion module converts the output voltage of the redundant small battery 102 and supplies power to the pressure sensor 104 through the converted voltage.

[0047] In this embodiment, when the low-voltage power supply system 101 is operating normally, the airbag module 103 and the door and window controller 105 operate normally. When the door and window controller 105 receives any valid collision signal from the airbag module 103 or the pressure sensor 104, the door and window controller 105 performs four-door unlocking. When the low-voltage power supply system 101 is abnormal and the first collision signal of the airbag module 103 is lost, the door and window controller 105 is powered by the redundant small battery 102. When receiving the second collision signal of the pressure sensor 104, the door and window controller 105 performs four-door unlocking. By adding the redundant small battery 102 to power the door and window controller 105, in a collision scenario, it is avoided that the wiring harness of the low-voltage power supply system 101 is damaged by the collision, resulting in the door and window controller 105 having no low-voltage power supply and being unable to automatically control four-door unlocking. In addition, pressure sensors 104 are added to the four doors. In a collision scenario, if the airbag module 103 cannot normally send the first collision signal, four-door unlocking control is performed according to the second collision signal of the pressure sensor 104.

[0048] It should be noted that the vehicle provided in the above embodiment and the door unlocking control system provided in the above embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the system embodiment and will not be elaborated here. In actual application, the vehicle provided in the above embodiment can, as needed, allocate the above functions to different functional modules, that is, divide the internal structure of the vehicle into different functional modules to complete all or part of the functions described above, and this is not limited here either.

[0049] The above embodiments only exemplarily illustrate the principles and effects of the present application, rather than limiting the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present application should still be covered by the claims of the present application.

Claims

1. A door unlocking control system, characterized in that, The system includes: An airbag module, a power supply module, a pressure sensor, and a door and window controller; The power supply module includes a first power supply module and a second power supply module. The first power supply module is used to supply power to the airbag module and the door and window controller, and the second power supply module is used to supply power to the door and window controller when the first power supply module is abnormal; The airbag module is used to send a first collision signal to the door and window controller when a vehicle collision occurs; The pressure sensor is used to send a second collision signal to the door and window controller when a vehicle collision occurs; The door and window controller is used to control the unlocking of the doors and windows when receiving the first collision signal and / or the second collision signal.

2. The door unlocking control system according to claim 1, characterized in that, The door and window controller includes: A power conversion module and an unlocking control module; The first power supply module or the second power supply module is used to supply power to the power conversion module; The power conversion module is used to supply power to the unlocking control module and the pressure sensor; The unlocking control module is used to control the unlocking of the doors and windows when receiving the first collision signal and / or the second collision signal.

3. The door unlocking control system according to claim 2, characterized in that, The number of the pressure sensors is multiple. At least one of the pressure sensors is installed on each door. Each pressure sensor is connected to the power conversion module, and each pressure sensor is connected to the unlocking control module.

4. The door unlocking control system according to claim 2, wherein The first power supply module includes: A power battery and a high-voltage low-voltage converter; The high-voltage low-voltage converter is used to step down the output voltage of the power battery and supply power to the power conversion module through the stepped-down voltage.

5. The door unlocking control system according to claim 4, characterized in that, The second power supply module includes: A backup battery and a switch; The backup battery is connected to one end of the switch, the other end of the switch is connected to the power conversion module, and the backup battery is connected to the high-voltage low-voltage converter; The switch is in an open state when the power supply line of the power battery is powered normally, or in a closed state when the power supply line of the power battery is powered abnormally.

6. The door unlocking control system according to claim 4, wherein The second power supply module includes: A backup battery and a selection module; One end of the selection module is connected to the power conversion module, and the other end of the selection module is connected to the high-voltage low-voltage converter or the backup battery; The selection module is used to automatically select the power supply line with a higher supply voltage between the power supply line of the power battery and the power supply line of the backup battery.

7. The door unlocking control system according to any one of claims 1-6, characterized in that, The airbag module includes a collision detector and an airbag body. The collision signal of the pressure sensor is sent to the door and window controller in the form of a controller area network signal, and the collision signal detected by the collision detector is sent to the door and window controller in the form of a controller area network signal.

8. A vehicle, characterized in that, Including the door unlocking control system according to any one of claims 1 to 7.

Images