Unlocking method and device after vehicle collision, electronic equipment, medium and product

Abstract

The invention provides a vehicle after-collision unlocking method and device, electronic equipment, a medium and a product, the method comprises the steps that after it is confirmed that a vehicle is collided, a gas source is controlled to communicate with a valve driving mechanism, and the valve driving mechanism is used for executing the unlocking action of a vehicle door lock under the driving action of gas with pressure released by the gas source. According to the technical scheme, after it is confirmed that the vehicle collides, the high-pressure gas in the gas source drives the valve driving mechanism to unlock the vehicle door lock, in the control mode, only communication of the gas source and the valve driving mechanism needs to be achieved, the gas with pressure in the gas source serves as a power source, and the vehicle door lock is unlocked. The air valve driving mechanism serves as an execution component to complete unlocking of the automobile door lock, the mode can still be achieved when the low-voltage power source and the automobile body control unit fail, meanwhile, compared with the prior art, the safety is higher, and the driving safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, device, electronic equipment, medium and product for unlocking a vehicle after a collision. Background Art

[0002] In extreme scenarios such as vehicle collisions and falls, lithium batteries carried by new energy vehicles are prone to catching fire, and vehicle drivers and passengers are objectively facing greater safety threats from fire accidents. With the improvement of automobile safety standards, more and more attention is paid to passenger protection after a collision when designing vehicles. Whether the door can be unlocked normally after a collision has always been a key function related to the life safety of passengers after a car accident.

[0003] The current method of unlocking the door in a collision is that when a collision occurs, the airbag controller transmits the detected collision information to the body controller, and the body controller performs the door unlocking. However, these collision unlocking systems mostly rely on the vehicle's low-voltage power supply system and body controller. In a severe collision, the low-voltage power supply system or body controller may be damaged, causing the automatic unlocking function to fail, thereby increasing the difficulty of rescue and the safety risk of passengers. Summary of the invention

[0004] In view of this, an object of an embodiment of the present application is to provide a method for unlocking a vehicle after a collision, which can improve the problem of high safety risks in the prior art.

[0005] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a method for unlocking a vehicle after a collision, comprising:

[0007] In response to confirming that the vehicle has collided, the control air source and the valve drive mechanism are connected, and the valve drive mechanism is used to perform an unlocking action of the vehicle door lock under the driving action of the pressurized gas released by the air source.

[0008] According to the above technical means, after confirming that the vehicle has collided, the door lock is unlocked by driving the valve drive mechanism through the high-pressure gas in the air source. In terms of control method, it is only necessary to achieve connection between the air source and the valve drive mechanism, so that the pressurized gas in the air source is used as the power source, and the valve drive mechanism is used as the actuator to complete the unlocking of the door lock. The above method can still be achieved when the low-voltage power supply and the body control unit fail, thereby improving driving safety.

[0009] Further, in response to confirming that the vehicle has collided, the method further includes:

[0010] The door lock motor that controls the door lock performs the unlocking action.

[0011] According to the above technical means, a new unlocking path is added when the vehicle collides, further improving driving safety.

[0012] Further, the door lock motor controlling the vehicle door lock to perform an unlocking action includes:

[0013] Sending a door unlocking request signal to the door lock motor via a body control unit;

[0014] An unlocking operation is performed by the door lock motor based on the door unlocking request signal.

[0015] Furthermore, before the vehicle body control unit sends a door unlocking request signal to the door lock motor, the method further includes:

[0016] In response to confirming that the vehicle has collided, a collision signal is issued, and the collision signal is transmitted to a vehicle body control unit through at least two transmission lines;

[0017] If the vehicle body control unit receives a collision signal from any of the transmission lines, and the received collision signal is a valid signal, a step of performing an unlocking action based on the door unlocking request signal by the door lock motor is executed.

[0018] According to the above technical means, the collision signal is transmitted through at least two transmission lines, thereby improving the success rate of collision signal transmission and further improving driving safety.

[0019] Further, in response to confirming that the vehicle has collided, controlling the air source and the valve drive mechanism to communicate includes:

[0020] In response to confirming that the vehicle has collided, a valve opening drive signal is sent to the solenoid valve, the solenoid valve is arranged between the air source and the valve drive mechanism, when the solenoid valve is opened, the air source and the valve drive mechanism are connected, when the solenoid valve is closed, the air source and the valve drive mechanism are not connected;

[0021] After receiving the valve opening drive signal, the solenoid valve switches from a closed state to an open state.

[0022] Furthermore, after the solenoid valve is switched from a closed state to an open state, the method further comprises:

[0023] In response to receiving a signal indicating that the door lock is successfully unlocked, the solenoid valve is controlled to be converted from an open state to a closed state.

[0024] In a second aspect, an embodiment of the present application provides a vehicle post-collision unlocking device, comprising:

[0025] Gas source;

[0026] A valve drive mechanism, mounted on the vehicle door, for performing an unlocking action of the vehicle door lock under the driving action of pressurized gas;

[0027] The safety control unit is configured to control the air source to communicate with the valve driving mechanism in response to confirming that the vehicle has collided.

[0028] Furthermore, the safety control unit is further configured to send a valve opening drive signal to the solenoid valve after confirming that the vehicle has collided;

[0029] The solenoid valve is located between the air source and the valve drive mechanism, and the solenoid valve is configured such that when it is in an open state, the air source and the valve drive mechanism are connected, and when it is in a closed state, the air source and the valve drive mechanism are not connected;

[0030] The solenoid valve is also configured to switch from a closed state to an open state after receiving a valve opening drive signal.

[0031] Furthermore, the safety control unit is further configured to control the solenoid valve to be converted from an open state to a closed state upon receiving a signal indicating that the door lock is successfully unlocked.

[0032] Furthermore, the valve drive mechanism includes an air pipe, a nozzle and a piston rod, and the air source, the air pipe, the nozzle and the piston rod are connected in sequence, so that the piston rod can be unlocked under the drive of the pressurized gas in the air source.

[0033] Furthermore, the end of the piston rod away from the nozzle faces the push rod of the door lock, so that the piston rod can push the push rod to move from a first position to a second position. When the push rod is in the first position, the door lock is in a closed state, and when the push rod is in the second position, the door lock is in an open state.

[0034] Furthermore, the gas source includes a high-pressure gas tank of the air suspension.

[0035] In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor and a memory coupled to each other, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the electronic device executes the above method.

[0036] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on a computer, the computer executes the above method.

[0037] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0038] The invention adopting the above technical solution has the following advantages:

[0039] In the technical solution provided in the present application, after confirming that the vehicle has collided, the door lock is unlocked by driving the valve drive mechanism through the high-pressure gas in the air source. In terms of control method, it is only necessary to connect the air source and the valve drive mechanism, so that the pressurized gas in the air source is used as the power source, and the valve drive mechanism is used as the actuator to complete the unlocking of the door lock. The above method can still be implemented when the low-voltage power supply and the body control unit fail. At the same time, compared with the existing technology, it is safer and improves driving safety.

[0040] In the technical solution of the present application, after confirming that a vehicle collision has occurred, the vehicle collision unlocking is achieved by controlling the connection between the air source and the valve drive mechanism and controlling the door lock motor to unlock in parallel, thereby increasing safety redundancy and further improving driving safety.

[0041] In the technical solution of the present application, the collision signal is transmitted to the vehicle body control unit via at least two transmission routes, thereby increasing the probability of successful transmission of the collision signal and further improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present application may be further described by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings may be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a flowchart provided for Example 1 of the present application.

[0044] Figure 2 This is a schematic diagram of the valve drive mechanism structure provided in Example 1 of the present application.

[0045] Figure 3 This is the S131-S132 flow chart provided for Example 1 of the present application.

[0046] Figure 4 This is the flow chart of S110-S140 provided for Example 1 of the present application.

[0047] Figure 5 This is a schematic diagram of the unlocking principle of the vehicle post-collision unlocking device provided in Example 2 of the present application.

[0048] Figure 6 It is a schematic diagram of the door lock structure with valve drive mechanism.

[0049] Figure 7 This is a structural block diagram of the vehicle unlocking device after a collision.

[0050] Figure 8 This is a flow chart of the unlocking method based on the vehicle post-collision unlocking device provided in Example 2 of the present application.

[0051] Icons: 10-body controller; 20-safety control unit; 30-door lock with valve drive mechanism; 40-high-pressure gas tank; 50-solenoid valve; 301-door lock motor; 302-valve drive mechanism; 3021-air pipe; 3022-nozzle; 3023-cylinder; 3024-piston; 303-push rod. DETAILED DESCRIPTION

[0052] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] The prior art proposes an automatic door unlocking system and unlocking method after a collision. The unlocking system includes an airbag control unit, a micro gas generator unlocking module and a door lock; the micro gas generator unlocking module is arranged on the door lock; after the airbag control unit detects a collision accident, it sends a collision signal to the outside, and transmits the ignition current directly to the micro gas generator unlocking module on the door lock through the ignition current signal transmission harness, and the gas generator explodes to drive the door lock to complete the unlocking.

[0054] The prior art ignites a gas generator after receiving a collision signal, thereby pneumatically pushing a push rod to unlock the door lock. However, there are great safety hazards when igniting the gas generator. If it is triggered by mistake, it will cause a high safety risk and the cost is high. If the door lock cannot be opened after one detonation, it cannot be driven again, and the fault tolerance rate is low.

[0055] The prior art also proposes a car door device that automatically unlocks when it is hit. This solution uses an inertial switch to sense the impact acceleration and control the on and off of the explosive bolt ignition circuit; uses the explosive bolt as the main connecting part between the door lock hook and the door frame structure; uses a retractor structure with an automatic locking function and a fabric belt as the auxiliary connecting part between the door lock hook and the door frame structure; uses the car power supply as the main power supply for the ignition of the explosive bolt; uses a capacitor as the auxiliary power supply for the ignition of the explosive bolt; and uses the car power supply as the charging power supply for the capacitor. When the inertial switch senses that the peak value of the impact acceleration is greater than the threshold, the inertial switch is turned on, and the current discharged by the car power supply or the capacitor passes through the explosive bolt circuit, the explosive bolt detonation structure is disconnected, and the connection between the door lock hook and the door frame is disconnected; when the door is opened and the movement speed of the door lock hook is too large, the retractor will automatically lock the fabric belt to prevent the door from opening rapidly. Compared with the existing automatic unlocking mechanism for door collision, this method has the advantages of high reliability, low modification cost, and strong survivability. Although this solution avoids the risk of failure of the ignition power supply itself, the inertial switch it uses is subject to accuracy and sensitivity limitations and mechanical wear under extreme conditions, and there is a risk of abnormal door unlocking due to false alarms and failure.

[0056] Example 1

[0057] The present application provides an electronic device including a processing module and a storage module. The storage module stores a computer program, and when the computer program is executed by the processing module, the electronic device can execute the corresponding steps of the following vehicle post-collision unlocking method.

[0058] In at least one embodiment, see Figure 1 A method for unlocking a vehicle after a collision provided in this embodiment may include the following steps:

[0059] Step 110, sensing a vehicle collision;

[0060] Step 120, confirming that the vehicle has collided;

[0061] Step 130, controlling the air source and the valve drive mechanism to communicate.

[0062] In this embodiment, the valve driving mechanism is used to perform an unlocking action of the vehicle door lock under the driving action of pressurized gas.

[0063] The pressurized gas in this embodiment comes from an air source. After the air source is connected to the valve drive mechanism, the valve drive mechanism can be driven by the pressurized gas to perform an unlocking action.

[0064] In at least one embodiment, the structure of the valve drive mechanism is as follows Figure 2As shown, firstly, it is necessary to add a valve drive mechanism 302 to the four-door lock structure. The valve drive mechanism 302 includes an air pipe 3021 connected to the high-pressure gas tank, a nozzle 3022, a cylinder 3023, and a piston 3024. The valve drive mechanism 302 is installed and limited by bolts and is still arranged at the traditional door lock. The nozzle 3022 is facing the door unlocking push rod 303. In order to ensure that the thrust generated by the gas released by the air pipe is fully utilized, it is necessary to design a piston 3024 at the nozzle outlet, and the piston 3024 is facing the push rod 303 to ensure that the push rod 303 can be effectively pushed. The valve drive mechanism is only activated when the airbag control unit determines that a collision has occurred and sends a drive signal, and it does not affect the normal operation of the door lock control at other times.

[0065] When the collision does not occur, the piston 3024 is located at the C position, that is, the piston is in the untriggered position, and the push rod 303 on the door lock can be switched between the A position and the B position. When the push rod 303 is in the A position, the door lock is closed, and when the push rod 303 is in the B position, the door lock is opened. When the collision occurs, the valve drive mechanism 302 works, and the high-pressure gas enters the gas tank and pushes the piston 3024 from the C position to the D position through the nozzle. The push rod 303 also switches from the A position to the B position accordingly, and the door lock is unlocked.

[0066] In this embodiment, the gas source includes a high-pressure gas tank of the air suspension system. A solenoid valve is provided on the high-pressure gas tank. The solenoid valve is in a normally closed state. When it is confirmed that a collision has occurred in the vehicle, the gas source and the valve drive mechanism 302 can be connected by controlling the opening of the solenoid valve. For vehicles that are not equipped with an air suspension system, a high-pressure gas tank can be added to the vehicle to achieve S110-S130.

[0067] At present, the working pressure of conventional air-suspended high-pressure gas tanks is 12 bar, and the gas pressure is 1.2 MPa. Based on F=P*A, the thrust F that can be generated at the nozzle is equal to the gas pressure released at the nozzle multiplied by the force-bearing surface area of ​​the structure at which it acts. This is much higher than the force of the door lock motor pushing the door unlocking push rod, which can effectively ensure that the door lock is unlocked.

[0068] like Figure 3 As shown, the above step 130 specifically includes the following steps:

[0069] Step 131: Sending a valve opening drive signal to the solenoid valve;

[0070] Step 132: After receiving the valve opening drive signal, the solenoid valve switches from the closed state to the open state.

[0071] For example, the valve opening drive signal may be issued by a controller of the vehicle computer, or may be issued by an airbag control unit.

[0072] For example, a high-pressure gas tank is connected to the valve drive mechanism by leading out a gas path, a solenoid valve is arranged on the high-pressure gas tank, and the door lock is opened under vehicle collision conditions by controlling the solenoid valve switch. The above method triggers the opening of the solenoid valve to obtain driving force, and the solenoid valve directly transmits the valve opening voltage signal using the valve opening drive signal to trigger it, pushing the door unlocking push rod to perform the unlocking action. The system can be unlocked quickly after an accident occurs, and can still be triggered when the low-voltage battery is powered off and the body controller is damaged, thereby improving the reliability of the unlocking system to solve the problem that the door lock is easy to fail to control in the event of a vehicle collision, which seriously endangers the personal safety of the driver and passengers.

[0073] In at least one embodiment, Figure 4 As shown, the method for unlocking a vehicle after a collision may include the following steps:

[0074] Step 110, sensing a vehicle collision;

[0075] Step 120, confirming that the vehicle has collided;

[0076] Step 130, controlling the air source and the valve drive mechanism to communicate.

[0077] Step 140, controlling the door lock motor of the vehicle door lock to perform an unlocking action.

[0078] In this embodiment, step 130 and step 140 are performed simultaneously.

[0079] The door lock motor is generally controlled by the body controller, which is used to control the door lock motor to perform unlocking when receiving the corresponding control signal. The corresponding control signal includes remote control key module, Bluetooth key module, mobile phone remote control, etc. The following is the unlocking execution control logic under normal working conditions without collision.

[0080] Step S1, the body controller receives an unlock request bus signal from other modules of the vehicle, such as a remote control key module, a Bluetooth key module, a mobile phone remote control, etc.

[0081] In step S2, the body controller needs to determine whether to execute the corresponding unlocking command based on the vehicle status information such as gear position, speed, etc., otherwise maintain the current door lock state and continue to receive new request signals.

[0082] Step S3, the vehicle body controller outputs a corresponding unlocking drive signal after judgment;

[0083] Step S4, the door lock device with the valve driving mechanism drives the door lock motor to complete unlocking after receiving the unlocking driving signal from the vehicle body controller.

[0084] Therefore, based on S130, this embodiment has carried out a safety redundancy design, that is, if the low-voltage power supply and the body controller are not failed, as long as either the valve drive mechanism (acting on the unlocking push rod) and the door lock motor are effective, the door lock can be opened, thereby improving the safety of unlocking the door lock under vehicle collision conditions.

[0085] In at least one embodiment, the above step 140 includes the following steps: Figure 5 As shown, specifically:

[0086] Step 141: In response to confirming that the vehicle has collided, a collision signal is issued;

[0087] Step 142: After receiving the collision signal, the vehicle body control unit sends a door unlocking request signal to the door lock motor;

[0088] Step 143: In response to receiving the door unlocking request signal, the door lock motor performs an unlocking action.

[0089] In step 141, generally, the airbag control unit is used to confirm whether the vehicle has collided. The following is one of the methods for confirming the collision:

[0090] The process by which the airbag control unit determines whether a real collision has occurred through a preset algorithm mainly relies on the coordinated work of multiple sensors and control units. The following is a detailed explanation of the process:

[0091] 1. Function and distribution of sensors

[0092] Collision sensor: This is one of the key components of the airbag system, responsible for detecting changes in acceleration when the vehicle collides. Collision sensors are usually installed at the front (such as near the bumper), middle and rear (such as near the rear) of the vehicle so that they can accurately detect collisions from different directions.

[0093] Safety sensor: Safety sensor is usually installed inside the airbag control unit to further analyze and judge the signal transmitted by the collision sensor. It mainly determines whether the vehicle has a serious collision by detecting parameters such as acceleration, deceleration and angular velocity of the vehicle.

[0094] 2. Signal transmission and processing

[0095] Signal transmission: When a vehicle collides, the collision sensor immediately senses the impact force and converts the corresponding signals into electrical signals for transmission. These signals are then sent to the airbag control unit.

[0096] Signal processing: After the airbag control unit receives the signal transmitted by the sensor, it will perform a series of processing, including signal amplification, filtering and conversion, to ensure the accuracy and reliability of the signal.

[0097] 3. Application of Preset Algorithms

[0098] Algorithm principle: A complex algorithm is preset inside the airbag control unit to determine whether the received sensor signal represents a real collision event. This algorithm takes into account many factors, such as the acceleration, duration, and direction of the collision.

[0099] Judgment process: The control unit will analyze and calculate the processed sensor signals according to the preset algorithm. If the calculation results show that the vehicle has been severely collided and the conditions for airbag detonation are met (such as the acceleration of the collision exceeds the preset threshold), the control unit will trigger the deployment of the airbag.

[0100] In addition to the preset algorithm, the airbag control unit may also use other auxiliary judgment mechanisms to improve the accuracy and reliability of the judgment. For example, some advanced airbag systems may be equipped with multiple acceleration sensors and angular velocity sensors to more comprehensively detect the collision of the vehicle. In addition, some systems may also use image recognition technology to detect the external environment and collision of the vehicle.

[0101] In S142, in order to improve the success rate of signal transmission, the collision signal is sent out in two transmission forms at the same time: a collision hard line signal and a collision bus signal, respectively along their respective conduction paths to the body controller. When the body control unit receives the collision signal transmitted by any transmission route and the collision signal is valid, it executes the step of sending a door unlock request signal to the door lock motor, and drives the door lock motor to open the door lock.

[0102] This embodiment has been designed with redundancy based on the original door lock motor unlocking. For example, based on the vehicle's own air-suspended high-pressure gas tank, the airbag control unit directly transmits a valve opening voltage signal to the solenoid valve at the high-pressure gas tank for triggering, and releases the high-pressure gas to transmit it to the valve drive mechanism at the door lock. The thrust generated by the gas release acts on the door unlocking push rod to move it from the locked position to the unlocked position, thereby providing a redundant supplement for the door lock motor to unlock after a collision.

[0103] Compared with the prior art, the technical solution proposed in this implementation (hereinafter referred to as this embodiment) has the following advantages, including:

[0104] 1. Cost advantage: This embodiment is based on the adaptive modification of the existing high-pressure gas tank and the airbag controller, which is more economical than adding gunpowder detonation devices to the four-door locks;

[0105] 2. Layout: The air pipe layout of the door lock mechanism of this embodiment is more conducive to layout than the gunpowder detonation device structure of the comparative document, and has less impact on the door shape;

[0106] 3. Safety. This embodiment uses high-pressure gas cylinders to drive the explosive device, which is safer than the gunpowder ignition device used in the comparative document. Gunpowder is a dangerous substance and has relatively lower safety.

[0107] 4. Environmental impact: Gunpowder storage and handling are particularly sensitive to the surrounding environment, making failure or false triggering more likely;

[0108] 5. Maintainability. This embodiment is easier to repair and restore than the prior art, has lower maintenance costs, and has the characteristics of sustainable use, which is different from the one-time consumption of the prior art;

[0109] 6. Reliability. This embodiment is more reliable than the prior art. If the door lock is not unlocked after the prior art is ignited, it cannot be driven further. This embodiment can provide continuous gas driving force to meet the vehicle unlocking requirements, and the success probability is higher.

[0110] Example 2

[0111] This embodiment proposes a vehicle post-collision unlocking device, based on the method described in Embodiment 1, such as Figure 5 As shown, it includes an air source, a door lock 30 with a valve drive mechanism and a safety control unit 20. The air source in this embodiment is a high-pressure gas tank 40 of an air suspension. The door lock 30 with a valve drive mechanism is installed on the vehicle door. Each vehicle door in this embodiment is equipped with a door lock 30 with a valve drive mechanism.

[0112] like Figure 6 As shown, a door lock 30 with a valve drive mechanism includes a door lock motor 301, a valve drive mechanism 302 and a door lock mechanical structure 303, wherein the valve drive mechanism 302 is hardware-connected to an air-suspended high-pressure gas tank 40 of the vehicle through an air pipe loop, and a driving force is provided by high-pressure gas.

[0113] The safety control unit 20 is configured to control the air source to communicate with the valve driving mechanism in response to confirming that a collision has occurred in the vehicle.

[0114] The vehicle post-collision unlocking device in this embodiment also includes a solenoid valve 50, which is located between the high-pressure gas tank 40 and the valve drive mechanism 30. The solenoid valve 50 is in a normally closed state when the vehicle is in a non-collision working condition. This embodiment is provided with a solenoid valve drive circuit control, that is, after the airbag control unit completes the identification of the vehicle collision, the safety control unit 20 outputs a continuous solenoid valve opening drive signal to the solenoid valve 50, and releases the high-pressure gas in the high-pressure gas tank 40 to the air pipe circuit. In this embodiment, the valve drive mechanism 302 is hardware-connected to the vehicle's suspended high-pressure gas tank 40 through the air pipe circuit, and the driving force is provided by the high-pressure gas. Therefore, when the solenoid valve 50 is configured to be in an open state, the high-pressure gas tank 40 is connected to the valve drive mechanism 30, and when the solenoid valve 50 is in a closed state, the high-pressure gas tank 40 and the valve drive mechanism 30 are not connected.

[0115] The safety control unit 20 is also configured to send a valve opening drive signal to the solenoid valve 50 after confirming that the vehicle has collided;

[0116] The solenoid valve 50 is also configured to switch from a closed state to an open state after receiving a valve opening drive signal.

[0117] The safety control unit 20 is further configured to control the solenoid valve 50 to switch from an open state to a closed state when receiving a signal indicating that the door lock is unlocked successfully.

[0118] For example, Figure 7 As shown, the safety control unit 20 can be an airbag control unit. After the airbag unit confirms that a collision has occurred, it directly controls the solenoid valve to open. In this example, the body controller 10, the airbag control unit and the gateway form a bus control network. The core signals transmitted by the bus are the door unlocking request signal sent by the body controller 10 and the bus collision signal sent by the airbag control unit. These bus signals are received, executed and fed back by the body controller 10; the valve drive mechanism of the four doors is connected to the body controller using a hardwire, which is used for the body controller to control the unlocking of the door lock device and the state feedback of the door lock. The airbag control unit and the solenoid valve 50 are connected using a hardwire, which is used for the airbag control unit to transmit the valve opening voltage signal to the solenoid valve. The airbag control unit and the body controller still retain a hardwire connection, which is used to transmit the collision hardwire signal.

[0119] For example, the safety control unit 20 of this embodiment can also be integrated into the airbag control unit. As a part of the airbag control unit, when the airbag control unit determines that the vehicle is hit by a collision, it sends a collision signal to the safety control unit 20, and the safety control unit 20 then sends a valve opening drive signal to the solenoid valve. The safety control unit 20 can also be integrated into the vehicle controller or other controllers.

[0120] Based on the vehicle post-collision unlocking device proposed in this embodiment, the vehicle post-collision unlocking is realized as follows: Figure 8 As shown, the specific steps include the following steps.

[0121] Step S21: The airbag control unit detects that a vehicle collision occurs.

[0122] Step S22: The airbag control unit collects collision sensing information through the vehicle collision sensor.

[0123] In step S23, the airbag control unit determines whether a real collision occurs through a preset algorithm; if no real collision occurs, the current continuous monitoring state is maintained; otherwise, step S24 is executed to output a collision signal.

[0124] Step S24: the airbag control unit outputs a collision signal to the vehicle-related controller and the execution module.

[0125] In step S25, the airbag control unit sends the collision signal in two transmission forms at the same time: a collision hard-line signal and a collision bus signal, which are respectively transmitted along their own conduction paths to the vehicle body controller.

[0126] Step S26, the body controller performs verification and judgment upon receiving the collision signal. As long as any one of the two signals is received and analyzed and verified to be valid, step S27 is executed, otherwise the current continuous monitoring state is maintained.

[0127] Step S27: According to the collision unlocking action strategy corresponding to the collision signal, the vehicle body controller sends a collision unlocking driving signal to the door lock device with the valve driving mechanism.

[0128] Step S28, the door lock device with valve drive mechanism controls the door lock motor to perform an action, such as controlling the door lock to automatically unlock twice, and the interval time of each unlocking is 3 seconds; otherwise, the current continuous monitoring state in S26 is maintained.

[0129] Step S31 is performed synchronously with step S25 after step S24. The airbag control unit sends a collision signal to the safety control unit 20, and the safety control unit 10 transmits a collision hard-line signal to the solenoid valve in the form of a valve opening drive signal.

[0130] Step S32, after the solenoid valve receives the valve opening drive signal, the solenoid valve is opened, and high-pressure gas is output to the door lock devices with valve drive mechanisms of the four doors through the high-pressure gas tank to execute step S28. The high-pressure gas provides a driving force to ensure that the door unlocking push rod runs to the unlocking position, and the air circuit is supplemented to unlock after the collision. In some optional embodiments, the door lock 30 with valve drive mechanism can transmit an unlocking success signal to the safety control unit 20 after completing the collision unlocking, and then the safety control unit 20 controls the solenoid valve 50 to reset and close the high-pressure gas output.

[0131] The airbag control unit is used to execute steps S21 to S25 and S31, the body controller is used to execute steps S26 to S27, and the door lock device with valve drive mechanism is used to execute steps S28 and S32. Figure 7 As shown, when a vehicle collides, the process can be carried out simultaneously from two directions: vehicle-wide basic collision unlocking (steps S21 to S28) and air path supplementary unlocking (steps S21 to S25, steps S31 to S32 and step S28).

[0132] The present embodiment adds a valve drive mechanism in the door lock, the gas circuit of which is connected to the air-suspended high-pressure gas tank of the vehicle, and obtains driving force by triggering the solenoid valve installed on the high-pressure gas tank. The solenoid valve uses the safety control unit 20 to directly transmit the valve opening voltage signal to trigger it, and pushes the door unlocking push rod to perform the unlocking action. The system can be quickly unlocked after an accident and is not affected by the power failure of the low-voltage battery, thereby improving the reliability of the unlocking system to solve the problem of related technologies that the door lock is easily controlled and fails in the event of a vehicle collision, seriously endangering the personal safety of the driver and passengers.

[0133] On the one hand, this embodiment is based on the vehicle's own air-suspended high-pressure gas tank. The safety control unit 20 directly transmits the valve opening voltage signal to the solenoid valve at the high-pressure gas tank for triggering, and releases the high-pressure gas to transmit it to the valve drive mechanism at the door lock. The thrust generated when the gas is released acts on the door unlocking push rod, causing it to move from the locked position to the unlocked position, which is a redundant supplement for unlocking the door lock motor after a collision.

[0134] On the other hand, the vehicle post-collision unlocking device described in this embodiment is a vehicle door lock valve drive unlocking system, which mainly includes an airbag control unit, a high-pressure gas tank, a solenoid valve, an air pipe circuit, and a vehicle door lock with an added valve drive mechanism. The main function of the valve drive mechanism is to use the gas thrust generated by the air pipe end to act on the door unlocking push rod, and by pushing the door unlocking push rod, the connecting rod engages with the pawl to successfully unlock the door.

[0135] The post-collision unlocking device provided in this embodiment may include at least one software function module that can be stored in a storage module or fixed in an operating system (OS) in the form of software or firmware. The processing module is used to execute the executable modules stored in the storage module, such as the software function modules and computer programs included in the post-collision unlocking device.

[0136] In this embodiment, the processing module may be an integrated circuit chip having the ability to process signals. The above-mentioned processing module may be a general-purpose processor. For example, the processor may be a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and may implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0137] The storage module may be, but is not limited to, a random access memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, etc. In this embodiment, the storage module may be used to store a program, and the processing module executes the program after receiving an execution instruction.

[0138] It should be noted that those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the electronic device described above can refer to the corresponding process of each step in the aforementioned method, and will not be elaborated here.

[0139] The embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer executes the vehicle post-collision unlocking method as described in the above embodiment.

[0140] Through the description of the above implementation methods, technical personnel in this field can clearly understand that the present application can be implemented by hardware, and can also be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, an electronic device, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0141] In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can also be implemented in other ways. The apparatus and method embodiments described above are merely schematic, for example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a part of a module, a program segment or a code, and a part of the module, program segment or code contains one or more executable instructions for implementing the specified logical function. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of the boxes in the block diagram and / or the flowchart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. In addition, each functional module in each embodiment of the present application can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part.

[0142] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for unlocking a vehicle after a collision, characterized in that: include: In response to confirming that the vehicle has collided, the control air source and the valve drive mechanism are connected, and the valve drive mechanism is used to perform an unlocking action of the vehicle door lock under the driving action of the pressurized gas released by the air source.

2. The method according to claim 1, characterized in that After the response confirming that the vehicle has collided, the method further includes: The door lock motor that controls the door lock performs the unlocking action.

3. The method according to claim 2, characterized in that The door lock motor controlling the vehicle door lock to perform the unlocking action includes: Sending a door unlocking request signal to the door lock motor via a body control unit; An unlocking operation is performed by the door lock motor based on the door unlocking request signal.

4. The method according to claim 3, characterized in that Before the vehicle body control unit sends a door unlocking request signal to the door lock motor, the method further includes: In response to confirming that the vehicle has collided, a collision signal is issued, and the collision signal is transmitted to a vehicle body control unit through at least two transmission lines; If the vehicle body control unit receives a collision signal from any of the transmission lines, and the received collision signal is a valid signal, a step of performing an unlocking action based on the door unlocking request signal by the door lock motor is executed.

5. The method according to claim 1, characterized in that In response to confirming that the vehicle has collided, controlling the air source and the valve drive mechanism to communicate includes: In response to confirming that the vehicle has collided, a valve opening drive signal is sent to the solenoid valve, the solenoid valve is arranged between the air source and the valve drive mechanism, when the solenoid valve is opened, the air source and the valve drive mechanism are connected, when the solenoid valve is closed, the air source and the valve drive mechanism are not connected; After receiving the valve opening drive signal, the solenoid valve switches from a closed state to an open state.

6. The method according to claim 5, characterized in that After the solenoid valve is switched from a closed state to an open state, the method further comprises: In response to receiving a signal indicating that the door lock is successfully unlocked, the solenoid valve is controlled to be converted from an open state to a closed state.

7. A vehicle post-collision unlocking device, characterized in that: include: Gas source; A valve drive mechanism, mounted on the vehicle door, for performing an unlocking action of the vehicle door lock under the driving action of pressurized gas; The safety control unit is configured to control the air source to communicate with the valve driving mechanism in response to confirming that the vehicle has collided.

8. The post-collision unlocking device for a vehicle according to claim 7, characterized in that: The safety control unit is further configured to send a valve opening drive signal to the solenoid valve after confirming that the vehicle has collided; The solenoid valve is located between the air source and the valve drive mechanism, and the solenoid valve is configured such that when it is in an open state, the air source and the valve drive mechanism are connected, and when it is in a closed state, the air source and the valve drive mechanism are not connected; The solenoid valve is also configured to switch from a closed state to an open state after receiving a valve opening drive signal.

9. The post-collision unlocking device for a vehicle according to claim 8, characterized in that: The safety control unit is further configured to control the solenoid valve to be switched from an open state to a closed state upon receiving a signal indicating that the door lock is unlocked successfully.

10. The vehicle post-collision unlocking device according to claim 7, characterized in that: The valve driving mechanism comprises an air pipe, a nozzle and a piston rod, and the air source, the air pipe, the nozzle and the piston rod are connected in sequence, so that the piston rod can be unlocked under the drive of the pressurized gas in the air source.

11. The vehicle post-collision unlocking device according to claim 10, characterized in that: The end of the piston rod away from the nozzle faces the push rod of the door lock, so that the piston rod can push the push rod to move from a first position to a second position. When the push rod is in the first position, the door lock is in a closed state, and when the push rod is in the second position, the door lock is in an open state.

12. The post-collision unlocking device for a vehicle according to claim 7, characterized in that: The gas source comprises a high-pressure gas tank of the air suspension.

13. An electronic device, characterized in that: The electronic device comprises a processor and a memory coupled to each other, wherein the memory stores a computer program. When the computer program is executed by the processor, the electronic device executes the method according to any one of claims 1 to 6.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 6.

15. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 6.

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