Vehicle safety control device and method and vehicle

Abstract

The invention provides a vehicle safety control device and method and a vehicle, the device comprises a collision detection device, a controller, an electric control switch, a relay and a standby power supply, the collision detection device detects a collision signal and sends the collision signal to the controller, and the controller judges whether a door lock unlocking condition is met or not when receiving the collision signal; when a door lock unlocking condition is met, the electric control switch is controlled to be switched on, so that the electric control switch controls the standby power supply to switch on a circuit for supplying power to a coil of the relay, the relay is powered on and closed, and a public contact and a normally open contact of the relay are connected with the standby power supply and a door lock driving device of the vehicle respectively. When the vehicle collides, the normally open contact is connected with the standby power supply, and an electric signal output by the standby power supply is transmitted to the door lock driving device through the relay to control unlocking of the door lock, so that unlocking of the door lock can be effectively controlled after the vehicle collides, and the driving safety of the vehicle is improved.

Description

Technical Field

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

[0002] With the continuous development of vehicle technology, the requirements for vehicle safety are becoming higher and higher. At present, after a vehicle collision, the battery, circuit, etc. of the vehicle are easily damaged, so that the door cannot be opened normally, so that the people in the vehicle are trapped in the vehicle, increasing the risk of injury and easily delaying the rescue time, especially in the case of vehicle fire or falling into water, the consequences are disastrous.

[0003] Therefore, it is necessary to provide a method for controlling the normal opening of a vehicle door after a vehicle collision to improve driving safety. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a vehicle safety control device, method and vehicle to solve the problem that the prior art cannot control the normal opening of the door after a vehicle collision.

[0005] To achieve the above technical objectives, the present application provides the following technical solutions:

[0006] In a first aspect, the embodiments of this specification provide a vehicle safety control device, including: a collision detection device, a controller, an electric control switch, a relay, and a backup power supply;

[0007] The collision detection device is used to detect a collision signal and send it to the controller;

[0008] The controller is used to determine whether the door lock unlocking condition is met when receiving the collision signal, and control the electric control switch to be turned on when the door lock unlocking condition is met;

[0009] The electric control switch is used to control the circuit of the backup power supply to supply power to the coil of the relay when it is turned on;

[0010] The common contact of the relay is connected to the backup power supply, and the normally open contact of the relay is connected to the door lock drive device of the vehicle. The relay is used to transmit the electrical signal output by the backup power supply to the door lock drive device when the normally open contact is closed, so as to control the unlocking of the door lock.

[0011] In one embodiment, it further comprises a first driving module, wherein a signal input end of the first driving module is connected to the controller, a signal output end of the first driving module is connected to the door lock driving device, and a power input end of the first driving module is connected to the backup power supply;

[0012] The controller is also used to output a door lock unlocking control signal to the first driving module when the door lock unlocking condition is met;

[0013] The first driving module is used to output an unlocking driving signal to the door lock driving device when receiving the door lock unlocking control signal, so as to control the door lock to unlock.

[0014] In one embodiment, it further comprises a signal detection module, wherein the input end of the signal detection module is connected to the normally open contact and / or normally closed contact of the relay, and the output end of the signal detection module is connected to the controller;

[0015] The signal detection module is used to detect the unlocking state signal of the relay and output it to the controller; the unlocking state signal is used to indicate whether the relay controls the door lock to unlock;

[0016] The controller is further configured to output the door lock unlocking control signal to the first driving module again when the unlocking state signal indicates that the relay does not control the door lock to unlock.

[0017] In one embodiment, the output end of the signal detection module is also connected to the signal input end of the first driving module, so as to output the unlocking state signal to the first driving module;

[0018] The unlocking state signal is used to trigger the first driving module to output the unlocking driving signal to the door lock driving device when it indicates that the relay does not control the door lock to unlock.

[0019] In one embodiment, the controller is specifically configured to:

[0020] When the collision signal is received, target data is acquired, and whether the door lock unlocking condition is met is determined based on the target data; the target data includes at least one of a vehicle speed signal, a battery status signal, and a collision feedback signal of a vehicle body controller.

[0021] In one embodiment, the controller is specifically configured to:

[0022] When the vehicle speed signal is 0, it is determined that the door lock unlocking condition is met;

[0023] When the vehicle speed signal is greater than 0 and less than or equal to a preset vehicle speed, determining whether a door lock unlocking condition is met based on the battery status signal and / or the collision feedback signal of the vehicle body controller;

[0024] When the vehicle speed signal is greater than the preset vehicle speed, it is determined that the door lock unlocking condition is not met.

[0025] In one embodiment, the controller is specifically configured to:

[0026] When the vehicle speed signal is greater than 0 and less than or equal to the preset vehicle speed, if the battery status signal indicates that the battery is not faulty, then upon receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is met, and, upon not receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is not met;

[0027] If the battery status signal indicates that the battery is faulty, it is determined that the door lock unlocking condition is met.

[0028] In one embodiment, it further comprises a second driving module, wherein a signal input end of the second driving module is connected to the controller, a signal output end of the second driving module is connected to the window driving device, and a power input end of the second driving module is connected to the backup power supply;

[0029] The controller is further configured to output a window lowering control signal to the second driving module upon receiving the collision signal;

[0030] The second driving module is used for outputting a window lowering driving signal to the window driving device when receiving the window lowering control signal, so as to control the window to lower.

[0031] In a second aspect, an embodiment of the present specification provides a vehicle safety control method, which is applied to a vehicle safety control device as described in any one of the above, and the method includes the following steps performed by the controller:

[0032] When receiving the collision signal sent by the collision detection device, it is determined whether the door lock unlocking condition is met, and when the door lock unlocking condition is met, an electrical signal is output to the electric control switch to control the door lock to unlock.

[0033] In a third aspect, an embodiment of the present specification provides a vehicle, comprising: a vehicle safety control device as described in any one of the above items.

[0034] In a fourth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the vehicle safety control method as described in any one of the above items is implemented.

[0035] In a fifth aspect, an embodiment of the present specification provides a computer program product or a computer program, wherein the computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; the processor of the computer device reads the computer program from the computer-readable storage medium, and when the processor executes the computer program, it implements the vehicle safety control method as described in any one of the above items.

[0036] It can be seen from the above technical scheme that the embodiment of the present application provides a vehicle safety control device, method and vehicle, the device includes a collision detection device, a controller, an electric control switch, a relay and a backup power supply. The collision signal is detected by the collision detection device and sent to the controller. When the controller receives the collision signal sent by the collision detection device, it determines whether the door lock unlocking condition is met, and controls the electric control switch to be turned on when the door lock unlocking condition is met, so that the backup power supply controls the line for supplying power to the coil of the relay through the electric control switch, so that the relay is energized and closed, and the common contact and the normally open contact of the relay are respectively connected to the backup power supply and the door lock drive device of the vehicle. When the relay is closed, the normally open contact is connected to the backup power supply, and the electrical signal output by the backup power supply is transmitted to the door lock drive device through the relay to control the door lock to unlock. Therefore, when the body controller cannot effectively control the door lock to unlock after the vehicle collides, the door lock can also be unlocked by the hardware circuit, so that the door lock can be effectively controlled to unlock after the vehicle collides, thereby improving the driving safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 This is a schematic structural diagram of the first vehicle safety control device provided in the implementation manner of this specification.

[0039] Figure 2 A schematic diagram of the structure of a second vehicle safety control device provided in an embodiment of this specification.

[0040] Figure 3 A schematic diagram of the structure of a third vehicle safety control device provided in an embodiment of this specification.

[0041] Figure 4 A schematic diagram of the structure of a fourth vehicle safety control device provided in an embodiment of this specification.

[0042] Figure 5 This is a schematic diagram of the structure of the fifth vehicle safety control device provided in the implementation manner of this specification.

[0043] Figure 6 A schematic diagram of the structure of the sixth vehicle safety control device provided in the implementation manner of this specification.

[0044] Figure 7 A flow chart of a vehicle safety control method provided in an embodiment of this specification. DETAILED DESCRIPTION

[0045] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0046] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0047] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0048] Overview

[0049] As described in the background art, with the continuous development of vehicle technology, the requirements for vehicle safety are becoming higher and higher.

[0050] At present, after a vehicle collision, the vehicle's battery, circuits, etc. are easily damaged, making it impossible to ensure that the door can be opened normally, trapping people in the vehicle, increasing the risk of injury and easily delaying rescue opportunities, especially in cases where the vehicle catches fire or falls into water, the consequences are disastrous.

[0051] Therefore, it is necessary to provide a method for controlling the normal opening of a vehicle door after a vehicle collision to improve driving safety.

[0052] In order to solve the problem that the traditional method cannot control the normal opening of the door after the vehicle collides, in the technical solution of the present application, the vehicle safety control device includes a collision detection device, a controller, an electric control switch, a relay and a backup power supply. The collision signal is detected by the collision detection device and sent to the controller. When the controller receives the collision signal sent by the collision detection device, it determines whether the door lock unlocking condition is met, and controls the electric control switch to be turned on when the door lock unlocking condition is met, so as to control the backup power supply to power the relay coil through the electric control switch. The line is turned on so that the relay is energized and closed, and the common contact and the normally open contact of the relay are respectively connected to the backup power supply and the door lock drive device of the vehicle. When the relay is closed, the normally open contact is connected to the backup power supply, and the electrical signal output by the backup power supply is transmitted to the door lock drive device through the relay to control the door lock to be unlocked. Therefore, when the body controller cannot effectively control the door lock to be unlocked after the vehicle collides, the door lock can also be unlocked by the hardware circuit, so that the door lock can be effectively controlled to be unlocked after the vehicle collides, thereby improving the driving safety of the vehicle.

[0053] Based on the above-mentioned inventive concept, the vehicle safety control device provided in the embodiment of this specification is exemplarily described below.

[0054] Exemplary Systems

[0055] The embodiments of this specification provide a vehicle safety control device, such as Figure 1 As shown, it includes: a collision detection device 101, a controller 102, an electric control switch 103, a relay 104 and a backup power supply 105;

[0056] The collision detection device 101 is used to detect a collision signal and send it to the controller 102;

[0057] The controller 102 is used to determine whether the door lock unlocking condition is met when receiving the collision signal, and control the electric control switch 103 to be turned on when the door lock unlocking condition is met;

[0058] The electric control switch 103 is used to control the circuit of the backup power supply 105 to supply power to the coil of the relay 104 when it is turned on;

[0059] The common contact of the relay 104 is connected to the backup power supply 105, and the normally open contact of the relay 104 is connected to the door lock drive device 106 of the vehicle. The relay 104 is used to transmit the electrical signal output by the backup power supply 105 to the door lock drive device 106 when the normally open contact is closed, so as to control the door lock to unlock.

[0060] Specifically, the collision detection device 101 is used to detect a collision signal of the vehicle and send the detected collision signal to the controller 102. The collision detection device 101 may include a collision sensor, and may also include a contact switch and a collision trigger device, the contact switch is connected to the collision trigger device, and the collision trigger device may be connected to the controller 102 via a CAN line. When the collision detection device 101 includes a contact switch and a collision trigger device, if a collision occurs in the vehicle, the contact switch is turned on, and a signal indicating that the contact switch is turned on is transmitted to the collision trigger device. When the collision trigger device receives the signal indicating that the contact switch is turned on, it determines that the vehicle has collided, and sends a collision signal to the controller 102.

[0061] The collision detection device 101 may be disposed on the front bumper of the vehicle so as to quickly detect a collision signal when the vehicle collides.

[0062] The controller 102 may be a controller 102 other than the vehicle body controller, for example, it may be a newly added controller 102, or it may be an existing controller 102 on the vehicle, such as a vehicle controller 102, etc.

[0063] The controller 102 is connected to the collision detection device 101 . After receiving the collision signal sent by the collision detection device 101 , the controller 102 can determine whether the door lock unlocking condition is met.

[0064] Among them, in the process of judging whether the door lock unlocking condition is met, the controller 102 can determine that the door lock unlocking condition is not met when the vehicle speed is greater than the vehicle speed threshold, and determine that the door lock unlocking condition is met when the vehicle speed is less than or equal to the vehicle speed threshold; it can also determine that the door lock unlocking condition is met when the battery and / or body controller fails and the vehicle speed is less than or equal to the vehicle speed threshold; it can also determine whether the collision signal sent by the collision detection device 101 is credible, and determine that the door lock unlocking condition is met when the collision signal is credible and the vehicle speed is less than or equal to the vehicle speed threshold.

[0065] The control end of the electric control switch 103 may be connected to the controller 102. When the controller 102 detects that the door lock unlocking condition is not met, the controller 102 may control the electric control switch 103 to be in an off state. When the controller 102 detects that the door lock unlocking condition is met, the controller 103 may control the electric control switch 103 to be turned on. For example, the controller 102 may directly send a digital signal to the electric control switch 103 to control the electric control switch 103 to be turned on, and may also send a door lock unlocking instruction to the collision trigger device. When the collision trigger device receives the door lock unlocking instruction, it sends a digital signal to the electric control switch 103 to control the electric control switch 103 to be turned on.

[0066] The electric control switch 103 is used to control the on / off of the circuit for supplying power to the coil of the relay 104 from the backup power supply 105. Thus, when the electric control switch 103 is turned on, the circuit for supplying power to the coil of the relay 104 from the backup power supply 105 is turned on, the coil of the relay 104 is energized, and the normally open contact of the relay 104 is closed, that is, the normally open contact of the relay 104 is connected to the common contact of the relay 104.

[0067] The common contact of relay 104 can be connected to the backup power supply 105, and the normally open contact of relay 104 is connected to the door lock drive device 106 of the vehicle. Therefore, when the normally open contact of relay 104 is connected to the common contact of relay 104, the electrical signal output by the backup power supply 105 can be transmitted to the door lock drive device 106 through relay 104. The door lock drive device 106 can be a door lock motor, etc. When receiving the electrical signal, the door lock motor can drive the lock cylinder of the door lock to rotate or move, etc., so as to unlock the door lock.

[0068] Therefore, when the body controller cannot effectively control the door lock unlocking after the vehicle collides, the door lock unlocking can also be controlled by the hardware circuit, thereby effectively controlling the door lock unlocking after the vehicle collides, thereby improving the driving safety of the vehicle.

[0069] At the same time, the controller 102 determines whether the door lock unlocking condition is met, and controls the door lock to unlock when the door lock unlocking condition is met, so that the door lock can be effectively unlocked while ensuring the driving safety of the vehicle.

[0070] In one possible implementation, Figure 2 As shown, it also includes a first driving module 201, the signal input end of the first driving module 201 is connected to the controller 102, the signal output end of the first driving module 201 is connected to the door lock driving device 106, and the power input end of the first driving module 201 is connected to the backup power supply 105;

[0071] The controller 102 is further configured to output a door lock unlocking control signal to the first driving module 201 when a door lock unlocking condition is met;

[0072] The first driving module 201 is used to output an unlocking driving signal to the door lock driving device 106 when receiving the door lock unlocking control signal, so as to control the door lock to unlock.

[0073] Specifically, the vehicle safety control device may further include a first drive module 201, and the first drive module 201 may use a drive chip, such as a low-side drive chip. The signal input end of the first drive module 201 is connected to the controller 102 to receive a control signal sent by the controller 102. The signal output end of the first drive module 201 is connected to the door lock drive device 106 to output an unlocking drive signal to the door lock drive device 106, thereby controlling the door lock to unlock. The power input end of the first drive module 201 can be connected to the backup power supply 105, so that in the case of battery damage, the first drive module 201 can still work normally, thereby enabling effective unlocking of the door lock.

[0074] When the controller 102 determines that the door lock unlocking condition is met, it can also output a door lock unlocking control signal to the signal input end of the first drive module 201 while controlling the electric control switch 103 to be turned on, so as to trigger the first drive module 201 to control the door lock unlocking. When the first drive module 201 receives the door lock unlocking control signal, it can output an unlocking drive signal to the door lock drive device 106 to control the door lock drive device 106 to execute the door lock unlocking, thereby realizing redundant control of the door lock unlocking. Therefore, after a vehicle collision, the normal unlocking of the door lock can be effectively guaranteed, thereby improving the driving safety of the vehicle.

[0075] In one possible implementation, Figure 3 As shown, it also includes a signal detection module 301, the input end of the signal detection module 301 is connected to the normally open contact and / or normally closed contact of the relay 104, and the output end of the signal detection module 301 is connected to the controller 102;

[0076] The signal detection module 301 is used to detect the unlocking state signal of the relay 104 and output it to the controller 102; the unlocking state signal is used to indicate whether the relay 104 controls the door lock to unlock;

[0077] The controller 102 is further configured to output the door lock unlocking control signal to the first driving module 201 again when the unlocking state signal indicates that the relay 104 does not control the door lock to unlock.

[0078] Specifically, the vehicle safety control device may further include a signal detection module 301, the input end of the signal detection module 301 may be connected to the normally open contact of the relay 104, may be connected to the normally closed contact of the relay 104, or may be connected to the normally open contact and the normally closed contact at the same time to detect the electrical signal on the corresponding contact, wherein: Figure 3 In the example, the signal detection module 301 is connected to the normally open contact and the normally closed contact at the same time. Figure 3The connection between the backup power supply 105 and the first driving module 201 is not shown. The signal detection module 301 can generate an unlocking state signal of the relay 104 based on the detected electrical signal to feed back to the controller 102. For example, a logical operation can be performed on the detected electrical signal to generate an unlocking state signal of the relay 104.

[0079] Among them, the unlocking state signal of the relay 104 can indicate whether the relay 104 controls the door lock to unlock. For example, when there is a signal at the normally open contact of the relay 104 and / or there is no signal at the normally closed contact of the relay 104, it can indicate that the relay 104 controls the door lock to unlock. When there is no signal at the normally open contact of the relay 104 and / or there is a signal at the normally closed contact of the relay 104, it can indicate that the relay 104 does not control the door lock to unlock. When there is no signal or both the normally open contact and the normally closed contact of the relay 104 have a signal, it indicates that the relay 104 is faulty. At this time, the controller 102 can control the electric control switch 103 to disconnect to stop controlling the door lock to unlock through the relay 104.

[0080] As a preferred implementation, the input end of the signal detection module 301 can be connected to the normally open contact and the normally closed contact at the same time to ensure the validity of the unlocking state signal.

[0081] When the controller 102 receives the unlocking status signal output by the signal detection module 301, it can determine whether the unlocking status signal indicates that the relay 104 is controlling the door lock to unlock. If the unlocking status signal indicates that the relay 104 is controlling the door lock to unlock, the current output can be kept unchanged. If the unlocking status signal indicates that the relay 104 does not control the door lock to unlock, the door lock unlocking control signal can be output again to the first drive module 201 to achieve redundant control of the first drive module 201, thereby effectively ensuring the normal unlocking of the door lock after a vehicle collision, thereby improving the driving safety of the vehicle.

[0082] In one possible implementation, Figure 4 As shown, the output end of the signal detection module 301 is also connected to the signal input end of the first driving module 201, so as to output the unlocking state signal to the first driving module 201;

[0083] The unlocking state signal is used to trigger the first driving module 201 to output the unlocking driving signal to the door lock driving device 106 when it indicates that the relay 104 does not control the door lock to unlock.

[0084] Specifically, the output end of the signal detection module 301 can also be connected to the signal input end of the first drive module 201 to simultaneously output the unlocking status signal to the controller 102 and the signal input end of the first drive module 201, so as to trigger the first drive module 201 to control the door lock drive device 106 through the unlocking status signal.

[0085] Among them, when the unlocking state signal indicates that the relay 104 does not control the unlocking of the door lock, the unlocking state signal can be used to trigger the first driving module 201 to output an unlocking drive signal to the door lock driving device 106 when it is output to the first driving module 201; when the unlocking state signal indicates that the relay 104 controls the unlocking of the door lock, the unlocking state signal cannot trigger the first driving module 201 to output an unlocking drive signal to the door lock driving device 106 when it is output to the first driving module 201.

[0086] It can be understood that the signal input end of the first drive module 201 can simultaneously receive the signal output by the controller 102 and the signal output by the signal detection module 301. When there is at least one signal between the two for triggering the first drive module 201 to output an unlocking drive signal to the door lock drive device 106, the first drive module 201 can output an unlocking drive signal to the door lock drive device 106, thereby realizing multiple redundant control of the first drive module 201, and then after a vehicle collision, it can effectively ensure the normal unlocking of the door lock, thereby improving the driving safety of the vehicle.

[0087] In a feasible implementation manner, the controller 102 is specifically configured to:

[0088] When the collision signal is received, target data is acquired, and whether the door lock unlocking condition is met is determined based on the target data; the target data includes at least one of a vehicle speed signal, a battery status signal, and a collision feedback signal of a vehicle body controller.

[0089] Specifically, the vehicle speed signal can represent the real-time vehicle speed, the battery status signal can be used to represent whether the battery is faulty, and the body controller collision feedback signal can be a collision signal detected by the body controller and fed back to the controller 102 .

[0090] In implementation, the controller 102 may determine whether the door lock unlocking condition is met based on target data, and the target data may include at least one of a vehicle speed signal, a battery status signal, and a vehicle body controller collision feedback signal.

[0091] For example, when the target data includes a vehicle speed signal, it can be determined that the door lock unlocking condition is not satisfied when the vehicle speed is greater than the vehicle speed threshold, and it can be determined that the door lock unlocking condition is satisfied when the vehicle speed is less than or equal to the vehicle speed threshold. When the target data includes a battery status signal, it can be determined that the door lock unlocking condition is not satisfied when the battery status signal indicates that the battery is not faulty, and it can be determined that the door lock unlocking condition is satisfied when the battery status signal indicates that the battery is faulty. When the target data includes a body controller collision feedback signal, it can be determined that the door lock unlocking condition is satisfied when the body controller collision feedback signal indicates that the vehicle has collided, and it can be determined that the door lock unlocking condition is not satisfied when the body controller collision feedback signal indicates that the vehicle has not collided. When the target data includes both a vehicle speed signal and a battery status signal, it can be determined that the door lock unlocking condition is satisfied when the vehicle speed is less than or equal to the vehicle speed threshold and the battery status signal indicates that the battery is faulty, otherwise, it can be determined that the door lock unlocking condition is not satisfied. When the target data includes both the vehicle speed signal and the body controller collision feedback signal, it can be determined that the door lock unlocking condition is met when the vehicle speed is less than or equal to the vehicle speed threshold and the body controller collision feedback signal indicates that the vehicle has collided, otherwise, it is determined that the door lock unlocking condition is not met. When the target data includes both the battery status signal and the body controller collision feedback signal, it can be determined that the door lock unlocking condition is not met when the battery status signal indicates that the battery is not faulty and the body controller collision feedback signal is not received (that is, the body controller collision feedback signal indicates that the vehicle has not collided), otherwise, it is determined that the door lock unlocking condition is met. When the target data includes both the vehicle speed signal, the battery status signal and the body controller collision feedback signal, it can be determined that the door lock unlocking condition is not met when the vehicle speed is greater than the vehicle speed threshold, and when the vehicle speed is less than or equal to the vehicle speed threshold, it is further determined whether the door lock unlocking condition is met based on the battery status signal and the body controller collision feedback signal.

[0092] Therefore, the controller 102 can effectively identify whether it is necessary to control the redundant door lock unlocking structure (such as relay 104 and the first drive module 201) outside the body controller to unlock the door lock based on at least one of the vehicle speed signal, the battery status signal and the body controller collision feedback signal, and then when the redundant door lock unlocking structure is triggered according to the judgment result based on whether the door lock unlocking condition is met, the door lock can be effectively unlocked while ensuring the vehicle driving safety.

[0093] In a feasible implementation manner, the controller 102 is specifically configured to:

[0094] When the vehicle speed signal is 0, it is determined that the door lock unlocking condition is met;

[0095] When the vehicle speed signal is greater than 0 and less than or equal to a preset vehicle speed, determining whether a door lock unlocking condition is met based on the battery status signal and / or the collision feedback signal of the vehicle body controller;

[0096] When the vehicle speed signal is greater than the preset vehicle speed, it is determined that the door lock unlocking condition is not met.

[0097] Specifically, when the controller 102 receives the collision signal sent by the collision detection device 101, if the vehicle speed is 0, it indicates that the vehicle has stopped running. At this time, it can be directly determined that the door lock unlocking condition is met, and the relay 104 and the first drive module 201 are controlled to unlock the door lock. There is no need to judge whether the collision signal sent by the collision detection device 101 is credible and whether the body controller can execute the door lock unlocking. Therefore, when the collision signal sent by the collision detection device 101 is received, the door lock can be unlocked in time, which further improves driving safety.

[0098] When the vehicle speed is greater than 0 and less than or equal to the preset vehicle speed, it can be further determined whether the door lock unlocking condition is met based on the battery status signal and / or the body controller collision feedback signal. For example, when the battery status signal indicates that the battery is faulty, it can be determined that the door lock unlocking condition is met; when the battery status signal indicates that the battery is not faulty, it can be directly determined that the door lock unlocking condition is not met; it can also be determined that the door lock unlocking condition is not met when the battery status signal indicates that the battery is not faulty and the body controller collision feedback signal is not received.

[0099] When the vehicle speed is greater than the preset speed, it indicates that opening the door poses a higher safety risk. At this time, it can be determined that the door lock unlocking conditions are not met, and an alarm signal is sent to the vehicle's center console, etc., to remind the driver to slow down. When the vehicle speed drops to the preset speed, it is further determined whether the door lock unlocking conditions are met, thereby effectively ensuring driving safety.

[0100] In a feasible implementation manner, the controller 102 is specifically configured to:

[0101] When the vehicle speed signal is greater than 0 and less than or equal to the preset vehicle speed, if the battery status signal indicates that the battery is not faulty, then upon receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is met, and, upon not receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is not met;

[0102] If the battery status signal indicates that the battery is faulty, it is determined that the door lock unlocking condition is met.

[0103] Specifically, when the vehicle speed is greater than 0 and less than or equal to the preset vehicle speed, if the battery status signal indicates that the battery is not faulty and a collision feedback signal from the vehicle body controller is received, it indicates that the collision signal sent by the collision detection device 101 is credible, that is, the vehicle collides. At this time, it can be determined that the door lock unlocking condition is met, so that the door lock is redundantly unlocked through the relay 104 and the first drive module 201 to ensure effective unlocking of the door lock.

[0104] When the vehicle speed is greater than 0 and less than or equal to the preset speed, if the battery status signal indicates that the battery has no faults and no collision feedback signal from the body controller is received, it indicates that the battery can normally power the body controller, but the body controller does not feedback the collision signal to the controller 102. At this time, it can be determined that the collision signal sent by the collision detection device 101 is unreliable, that is, the collision detection device 101 has a misjudgment. Therefore, it can be determined that the door lock unlocking condition is not met to avoid the door being mistakenly opened during vehicle driving, affecting the driving experience or causing unnecessary safety risks.

[0105] In one possible implementation, Figure 5 As shown, it also includes a second driving module 501, the signal input end of the second driving module 501 is connected to the controller 102, the signal output end of the second driving module 501 is connected to the window driving device 502, and the power input end of the second driving module 501 is connected to the backup power supply 105 ( Figure 5 not reflected in the report);

[0106] The controller 102 is further configured to output a window lowering control signal to the second driving module 501 upon receiving the collision signal;

[0107] The second driving module 501 is used for outputting a window lowering driving signal to the window driving device 502 when receiving the window lowering control signal, so as to control the window to lower.

[0108] Specifically, the vehicle safety control device may further include a second drive module 501, and the second drive module 501 may use a drive chip, such as a low-side drive chip. The signal input end of the second drive module 501 is connected to the controller 102 to receive a control signal sent by the controller 102. The signal output end of the second drive module 501 is connected to the window drive device 502 to output a window lowering drive signal to the window drive device 502, thereby controlling the window to be lowered. The power input end of the second drive module 501 may be connected to the backup power supply 105, so that in the event of battery damage, the second drive module 501 can still work normally, thereby effectively controlling the window to be lowered, so as to further improve the driving safety of the vehicle.

[0109] The controller 102 can output a window lowering control signal to the second drive module 501 upon receiving the collision signal sent by the collision detection device 101, so as to trigger the second drive module 501 to control the window lowering. When receiving the window lowering control signal, the second drive module 501 can output a window lowering drive signal to the window drive device 502, which can be a window motor, to control the window drive device 502 to execute the window lowering, thereby realizing redundant control of the window. Thus, after a vehicle collision occurs, the window can be controlled to lower immediately to facilitate the escape of the driver and passengers, further improving the driving safety of the vehicle.

[0110] The structure and workflow of the vehicle safety control device of the present application are exemplarily described below through a preferred implementation. Figure 6 As shown, the collision detection device 101 includes a contact switch 601 and a collision trigger device 602, the contact switch 601 is connected to the collision trigger device 602, the collision trigger device 602 is connected to the controller 102 through a CAN line, and the electric control switch 103 uses a first transistor Q1, the base of the first transistor Q1 is connected to the collision trigger device 602 through a first resistor R1, the collector of the first transistor Q1 is connected to the coil of the relay 104, the emitter of the first transistor Q1 is grounded, and a second resistor R2 is also connected between the base of the first transistor Q1 and the first resistor R1, one end of the second resistor R2 is connected to the line between the base of the first transistor Q1 and the first resistor R1, and the other end of the second resistor R2 is grounded. The relay 104 is connected in parallel with a first diode D1 to protect the relay 104 through the first diode D1. The end of the coil of the relay 104 that is not connected to the first transistor Q1 and the common contact (3# contact) of the relay 104 are both connected to the backup power supply 105 ( Figure 6The normally open contact (5# contact) and normally closed contact (4# contact) of the relay 104 are both connected to the signal detection module 301, and the normally open contact (5# contact) of the relay 104 is also connected to the door lock drive device 106. The controller 102 is also connected to the signal input end (GV port) of the first driving module 201 through a signal conversion circuit, the signal conversion circuit includes a third resistor R3, a fourth resistor R4 and a second triode Q2, one end of the third resistor R3 is connected to the controller 102, and the other end is connected to the base of the second triode Q2, one end of the fourth resistor R4 is connected to the line between the third resistor R3 and the base of the second triode Q2, and the other end is grounded, the collector of the second triode Q2 is connected to the signal input end (GV port) of the first driving module 201, and the emitter of the second triode Q2 is grounded, and the backup power supply 105 is connected to the connection point of the signal input end (GV port) of the first driving module 201 and the collector of the second triode Q2 through a fifth resistor R5. The power input end (OUT port) of the first driving module 201 is connected to the backup power supply 105, and the signal output end (IN port) of the first driving module 201 is connected to the door lock driving device 106. The signal detection module 301 is connected to the controller 102 and the connection point between the controller 102 and the third resistor R3 respectively. The controller 102 is connected to the signal input end of the second drive module 501, the power input end of the second drive module 501 is connected to the backup power supply 105, and the signal output end of the second drive module 501 is connected to the window drive device 502. The controller 102 is also connected to the body controller 603 through the CAN line to receive the collision feedback signal sent by the body controller 603. The body controller 603 is connected to the window drive device 502 and the door lock drive device 106. When the body controller 603 is in normal operation, it can detect the collision signal and control the window to be lowered and the door lock to be unlocked when the collision signal is detected.

[0111] Among them, when the vehicle collides, the contact switch 601 is turned on, and when the collision trigger device 602 receives the signal indicating that the contact switch 602 is turned on, it sends a collision signal to the controller 102. The controller 102 combines the vehicle speed signal, the battery status signal and the collision feedback signal sent by the body controller 603 to determine whether the door lock unlocking condition is met. If so, it outputs a high-level door lock unlocking control signal to the signal conversion circuit and sends a door lock unlocking instruction to the collision trigger device 602 via the CAN line.

[0112] When the collision trigger device 602 receives the door lock unlocking instruction, it sends a digital signal to the first transistor Q1, so that the first transistor Q1 is turned on, the coil of the relay 104 is energized, and the normally open contact (contact #5) of the relay 104 is connected to the backup power supply 105 to output an electrical signal to the door lock drive device 106 to control the door lock to unlock. At the same time, the high-level door lock unlocking control signal turns on the second transistor Q2, and the signal input end (GV port) of the first drive module 201 receives a low-level signal, so that the first drive module 201 outputs an unlocking drive signal to the door lock drive device 106 to control the door lock to unlock.

[0113] The signal detection module 301 detects the signals of the normally open contact (contact #5) and the normally closed contact (contact #4) of the relay 104, and simultaneously outputs the unlocking state signal to the controller 102 and the first drive module 201. Wherein, when the unlocking state signal is a low-level signal, it indicates that the relay 104 is controlling the door lock to unlock, and the output signal of the controller 102 remains unchanged. At the same time, the second transistor Q2 is disconnected, and the signal input end (GV port) of the first drive module 201 receives a high-level signal, and does not output the unlocking drive signal to the door lock drive device 106; when the unlocking state signal is a high-level signal, it indicates that the relay 104 does not control the door lock to unlock, and the controller 102 outputs the door lock unlocking control signal to the first drive module 201 again to trigger the first drive module 201 to output the unlocking drive signal to the door lock drive device 106; at the same time, the high-level unlocking state signal will also trigger the first drive module 201 to output the unlocking drive signal to the door lock drive device 106 to control the door lock to unlock.

[0114] In addition, when the controller 102 receives the collision signal sent by the collision trigger device 602, it can also output a window lowering control signal to the second drive module 501. When the second drive module 501 receives the window lowering control signal, it can output a window lowering drive signal to the window drive device 502 to control the window to lower.

[0115] Exemplary Methods

[0116] In an exemplary embodiment of the present specification, a vehicle safety control method is also provided, which is applied to a vehicle safety control device as in any of the above embodiments. Figure 7 As shown, the method includes the following steps executed by the controller 102:

[0117] S701. When receiving a collision signal sent by the collision detection device 101, determine whether a door lock unlocking condition is met, and when the door lock unlocking condition is met, output an electrical signal to the electric control switch 103 to control the door lock to unlock.

[0118] In a feasible implementation, it also includes:

[0119] When the door lock unlocking condition is met, a door lock unlocking control signal is output to the first driving module 201. The first driving module 201 is used to output an unlocking driving signal to the door lock driving device 106 when receiving the door lock unlocking control signal to control the door lock to unlock.

[0120] In a feasible implementation, it also includes:

[0121] Receiving the unlocking state signal output by the signal detection module 301; the unlocking state signal is used to indicate whether the relay 104 controls the door lock to unlock;

[0122] When the unlocking state signal indicates that the relay 104 does not control the door lock to unlock, the door lock unlocking control signal is output to the first driving module 201 again.

[0123] In a feasible implementation, determining whether the door lock unlocking condition is met includes:

[0124] When the collision signal is received, target data is acquired, and whether the door lock unlocking condition is met is determined based on the target data; the target data includes at least one of a vehicle speed signal, a battery status signal, and a collision feedback signal of a vehicle body controller.

[0125] In a feasible implementation manner, determining whether a door lock unlocking condition is met based on the target data includes:

[0126] When the vehicle speed signal is 0, it is determined that the door lock unlocking condition is met;

[0127] When the vehicle speed signal is greater than 0 and less than or equal to a preset vehicle speed, determining whether a door lock unlocking condition is met based on the battery status signal and / or the collision feedback signal of the vehicle body controller;

[0128] When the vehicle speed signal is greater than the preset vehicle speed, it is determined that the door lock unlocking condition is not met.

[0129] In a feasible implementation manner, determining whether a door lock unlocking condition is met based on the battery status signal and / or the vehicle body controller collision feedback signal includes:

[0130] If the battery status signal indicates that the battery is not faulty, then when the body controller collision feedback signal is received, it is determined that the door lock unlocking condition is met, and when the body controller collision feedback signal is not received, it is determined that the door lock unlocking condition is not met;

[0131] If the battery status signal indicates that the battery is faulty, it is determined that the door lock unlocking condition is met.

[0132] Example Vehicles

[0133] In an exemplary embodiment of the present specification, a vehicle is also provided, comprising the vehicle safety control device as described in any of the above embodiments.

[0134] Exemplary computer program products and storage media

[0135] In addition to the above-mentioned methods and devices, the vehicle safety control method provided in the embodiments of this specification may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the vehicle safety control method according to various embodiments of this specification described in the above "Exemplary Method" section of this specification.

[0136] The computer program product can be written in any combination of one or more programming languages ​​to write program codes for executing the operations of the embodiments of this specification, and the programming languages ​​include object-oriented programming languages, such as Java, C++, etc., and also include conventional procedural programming languages, such as "C" language or similar programming languages.

[0137] In addition, an embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the vehicle safety control method according to various embodiments of the present specification described in the above "Exemplary Method" section of the present specification.

[0138] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0139] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A vehicle safety control device, characterized in that: include: Collision detection devices, controllers, electronic switches, relays and backup power supplies; The collision detection device is used to detect a collision signal and send it to the controller; The controller is used to determine whether the door lock unlocking condition is met when receiving the collision signal, and control the electric control switch to be turned on when the door lock unlocking condition is met; The electric control switch is used to control the circuit of the backup power supply to supply power to the coil of the relay when it is turned on; The common contact of the relay is connected to the backup power supply, and the normally open contact of the relay is connected to the door lock drive device of the vehicle. The relay is used to transmit the electrical signal output by the backup power supply to the door lock drive device when the normally open contact is closed, so as to control the unlocking of the door lock.

2. The device according to claim 1, characterized in that It also includes a first driving module, wherein a signal input end of the first driving module is connected to the controller, a signal output end of the first driving module is connected to the door lock driving device, and a power input end of the first driving module is connected to the backup power supply; The controller is also used to output a door lock unlocking control signal to the first driving module when the door lock unlocking condition is met; The first driving module is used to output an unlocking driving signal to the door lock driving device when receiving the door lock unlocking control signal, so as to control the door lock to unlock.

3. The device according to claim 2, characterized in that It also includes a signal detection module, wherein the input end of the signal detection module is connected to the normally open contact and / or normally closed contact of the relay, and the output end of the signal detection module is connected to the controller; The signal detection module is used to detect the unlocking state signal of the relay and output it to the controller; the unlocking state signal is used to indicate whether the relay controls the door lock to unlock; The controller is further configured to output the door lock unlocking control signal to the first driving module again when the unlocking state signal indicates that the relay does not control the door lock to unlock.

4. The device according to claim 3, characterized in that The output end of the signal detection module is also connected to the signal input end of the first driving module, and is used to output the unlocking state signal to the first driving module; The unlocking state signal is used to trigger the first driving module to output the unlocking driving signal to the door lock driving device when it indicates that the relay does not control the door lock to unlock.

5. The device according to any one of claims 1 to 4, characterized in that: The controller is specifically used for: When the collision signal is received, target data is acquired, and whether the door lock unlocking condition is met is determined based on the target data; the target data includes at least one of a vehicle speed signal, a battery status signal, and a collision feedback signal of a vehicle body controller.

6. The device according to claim 5, characterized in that The controller is specifically used for: When the vehicle speed signal is 0, it is determined that the door lock unlocking condition is met; When the vehicle speed signal is greater than 0 and less than or equal to a preset vehicle speed, determining whether a door lock unlocking condition is met based on the battery status signal and / or the collision feedback signal of the vehicle body controller; When the vehicle speed signal is greater than the preset vehicle speed, it is determined that the door lock unlocking condition is not met.

7. The device according to claim 6, characterized in that The controller is specifically used for: When the vehicle speed signal is greater than 0 and less than or equal to the preset vehicle speed, if the battery status signal indicates that the battery is not faulty, then upon receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is met, and, upon not receiving the collision feedback signal from the vehicle body controller, it is determined that the door lock unlocking condition is not met; If the battery status signal indicates that the battery is faulty, it is determined that the door lock unlocking condition is met.

8. The device according to any one of claims 1 to 4, characterized in that It also includes a second driving module, wherein a signal input end of the second driving module is connected to the controller, a signal output end of the second driving module is connected to the window driving device, and a power input end of the second driving module is connected to the backup power supply; The controller is further configured to output a window lowering control signal to the second driving module upon receiving the collision signal; The second driving module is used for outputting a window lowering driving signal to the window driving device when receiving the window lowering control signal, so as to control the window to lower.

9. A vehicle safety control method, characterized in that: Applied to the vehicle safety control device according to any one of claims 1 to 8, the method comprises the following steps performed by the controller: When receiving the collision signal sent by the collision detection device, it is determined whether the door lock unlocking condition is met, and when the door lock unlocking condition is met, an electrical signal is output to the electric control switch to control the door lock to unlock.

10. A vehicle, characterized in that: include: A vehicle safety control device as claimed in any one of claims 1 to 8.

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