Unlocking control method, device and system based on vehicle collision

Abstract

The invention provides an unlocking control method, device and system based on vehicle collision. The method comprises the steps that a whole vehicle power-on signal is received; in response to the whole vehicle power-on signal, a vehicle safety identifier is read, and the vehicle safety identifier is used for indicating the current safety state of the vehicle; when the safety state indicated by the vehicle safety identifier is a collision state, the collision sequence event is executed according to a preset rule, the collision sequence event comprises a plurality of sub-events, and the preset rule comprises the number of execution times of the collision sequence event and the execution interval of the collision sequence event. By means of the method and device, it is ensured that the vehicle can be automatically unlocked after short-time power failure due to collision, the unlocking safety of the vehicle is improved, and the safety of the vehicle, a driver and passengers is ensured.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a method, device and system for unlocking control based on vehicle collision. Background Art

[0002] At present, with the advancement of the new four modernizations of automobiles, functions such as hidden door handles and electric locks have gradually become standard configurations. In actual use, when a vehicle collides violently, it has been repeatedly reported that the hidden door handles and electric locks cannot be unlocked automatically, resulting in rescue personnel being unable to open the doors from the outside in time, increasing the risk of the driver being trapped.

[0003] In response to the above problems, various automobile manufacturers have developed a collision unlocking function. In a typical door unlocking system, when a vehicle equipped with an airbag is involved in a collision accident of a certain degree, the entire vehicle is subjected to a huge impact and there is a possibility of a brief power outage. If the power is briefly cut off during the unlocking process of the door, the door cannot be unlocked.

[0004] However, using a backup power supply or a large capacitor power supply to power the entire vehicle requires adding a separate battery and power supply line, resulting in a higher cost for unlocking the doors in the event of a collision. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a vehicle collision-based unlocking control method, device and system to overcome at least one of the above-mentioned defects.

[0006] In a first aspect, an embodiment of the present application provides an unlocking control method based on vehicle collision, the method comprising: receiving a vehicle power-on signal; in response to the vehicle power-on signal, reading a vehicle safety identifier, the vehicle safety identifier being used to indicate a current safety status of the vehicle; when the safety status indicated by the vehicle safety identifier is a collision status, executing a collision sequence event according to preset rules, the collision sequence event comprising a plurality of sub-events, the preset rules comprising an execution count for the collision sequence event and an execution interval for the collision sequence event.

[0007] In an optional embodiment of the present application, the safety state indicated by the vehicle safety identifier is determined to be a collision state in the following manner: receiving collision data detected by a collision sensor; determining whether the collision data reaches a preset collision value; if the collision data reaches the preset collision value, then controlling the safety state indicated by the location in the memory storing the vehicle safety identifier to be a collision state.

[0008] In an optional embodiment of the present application, the method also includes: after executing a collision sequence event according to a preset rule, monitoring whether the door state is changed from an open state to a closed state; if the door state is changed from an open state to a closed state, determining whether the power state of the vehicle is switched to a non-ON gear; if the power state of the vehicle is switched to a non-ON gear, controlling the safety state indicated by the location storing the vehicle safety identifier in the memory to a non-collision state, and the non-collision state allows the door to be locked.

[0009] In an optional embodiment of the present application, the method also includes: when the safety state indicated by the vehicle safety identifier is read as a non-collision state, receiving a collision signal, and controlling the safety state indicated by the location where the vehicle safety identifier is stored in the memory to change from a non-collision state to a collision state.

[0010] In an optional embodiment of the present application, the unlocked doors are determined in the following manner: a vehicle collision situation is obtained, wherein the vehicle collision situation includes a collision location of the vehicle and a collision degree of the vehicle; and a strategy for unlocking the doors is determined according to the vehicle collision situation.

[0011] In an optional embodiment of the present application, the strategy for unlocking the doors includes unlocking the driver's side door, unlocking the passenger side door and unlocking the rear doors.

[0012] In an optional embodiment of the present application, the vehicle power-on signal indicates that the vehicle gear is in the full vehicle power-on gear.

[0013] In an optional embodiment of the present application, the collision sensor includes a vehicle front end acceleration sensor and a vehicle rear end acceleration sensor, wherein the vehicle front end acceleration sensor is installed at the vehicle's front anti-collision beam position and the vehicle's A-pillar position, and the vehicle rear end acceleration sensor is installed at the vehicle's rear anti-collision beam position.

[0014] In the second aspect, an embodiment of the present application also provides an unlocking control device based on vehicle collision, the device comprising: a receiving module for receiving a power-on signal of the entire vehicle; a reading module for reading a vehicle safety identifier in response to the power-on signal of the entire vehicle, the vehicle safety identifier being used to indicate the current safety status of the vehicle; an execution module for executing a collision sequence event according to preset rules when the safety status indicated by the vehicle safety identifier is a collision status, the collision sequence event comprising multiple sub-events, the preset rules comprising the number of executions of the collision sequence event and the execution interval of the collision sequence event.

[0015] On the third aspect, an embodiment of the present application also provides an unlocking control system based on vehicle collision, the system comprising: a memory integrated in an on-board controller to store a vehicle safety identifier; an on-board controller configured to perform the following processing: receiving a vehicle power-on signal; in response to the vehicle power-on signal, reading the vehicle safety identifier, the vehicle safety identifier being used to indicate the current safety status of the vehicle; when the safety status indicated by the vehicle safety identifier is a collision status, executing a collision sequence event according to preset rules, the collision sequence event comprising multiple sub-events, and the preset rules comprising the number of executions of the collision sequence event and the execution interval of the collision sequence event.

[0016] The unlocking control method, device and system based on vehicle collision provided by the embodiment of the present application include: receiving a vehicle power-on signal; in response to the vehicle power-on signal, reading a vehicle safety identifier, the vehicle safety identifier is used to indicate the current safety state of the vehicle; when the safety state indicated by the vehicle safety identifier is a collision state, executing a collision sequence event according to a preset rule, the collision sequence event includes multiple sub-events, and the preset rules include the number of executions for the collision sequence event and the execution interval of the collision sequence event. Through the present application, it is ensured that the vehicle can be automatically unlocked after a short power outage due to a collision, which improves the unlocking safety of the vehicle and ensures the safety of the vehicle and the driver and passengers.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A flowchart of an unlocking control method based on vehicle collision provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of the unlocking control method based on vehicle collision provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of an unlocking control device based on vehicle collision provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0023] First, the application scenarios to which the present application is applicable are introduced. The present application can be applied in the field of automotive technology.

[0024] Research has found that when a vehicle is involved in a severe collision, the hidden door handles and electric locks cannot be unlocked automatically, resulting in the rescue workers being unable to open the door from the outside in time. Various automobile manufacturers have developed a collision unlocking function. In a typical door unlocking system, when a vehicle equipped with an airbag is involved in a certain degree of collision accident, the entire vehicle is subjected to a huge impact and there is a temporary power outage of the entire vehicle. If the power is temporarily cut off during the unlocking process of the door, the door cannot be unlocked. If a backup power supply or a large-capacitor power supply is used to power the entire vehicle, a separate battery and power supply line are added, resulting in a higher cost for door unlocking in a collision accident.

[0025] Based on this, the embodiment of the present application provides an unlocking control method, device and system based on vehicle collision, the method comprising: receiving a vehicle power-on signal; in response to the vehicle power-on signal, reading a vehicle safety identifier, the vehicle safety identifier is used to indicate the current safety state of the vehicle; when the safety state indicated by the vehicle safety identifier is a collision state, executing a collision sequence event according to a preset rule, the collision sequence event includes multiple sub-events, and the preset rules include the number of executions for the collision sequence event and the execution interval of the collision sequence event. Through this application, it is ensured that the vehicle can be automatically unlocked after a short power outage due to a collision, which improves the unlocking safety of the vehicle and ensures the safety of the vehicle and the driver and passengers.

[0026] The method of the present application is performed by an onboard controller (IBCM, Integrated Body Control Module). IBCM is a highly integrated body control module that adds more communication interfaces and functions on the basis of BCM, such as keyless entry, one-button start, etc. IBCM integrates multiple communication protocols and multi-channel CAN / LIN nodes, and can centrally control various functions of the vehicle body.

[0027] The advantage of IBCM lies in its highly integrated design, which can save space and cost, while improving the intelligence of the car. It meets the requirements of functional safety design, provides multiple communication protocols, supports multiple CAN / LIN nodes, and meets the design requirements of the body control module (BCM). In addition, IBCM also supports single-antenna frequency hopping reception, prevents mutual interference, and optimizes costs.

[0028] The method of this application is applicable to the case where a power outage occurs at the moment of a vehicle collision (such as a loose connector or power connector, etc.), resulting in a power outage during program operation without subsequent unlocking operations. After the power is restored after the vehicle stops, the IBCM will return to the power-on state. The airbag pops out at the moment of a vehicle collision, causing a short power outage.

[0029] For example, the location of the brief power outage in the present application can be the connection between the battery and the vehicle-mounted controller IBCM, and the connection between the door and the vehicle-mounted controller IBCM. In the present application, the left and right doors are controlled separately, so that at least one door can be unlocked in the event of a side collision. The specific location is not limited here. It may be that the connector between the vehicle components is loose, or a certain component of the vehicle is temporarily short-circuited.

[0030] See also Figure 1 , Figure 1 This is a flow chart of the unlocking control method based on vehicle collision provided by an embodiment of the present application. Figure 1 As shown in , the unlocking control method based on vehicle collision provided by the embodiment of the present application includes:

[0031] S101, receiving a vehicle power-on signal.

[0032] In this step, the vehicle power-on signal indicates that the vehicle gear is in the full vehicle power-on gear, the vehicle is in the on gear, and power is supplied to all electrical appliances in the vehicle.

[0033] S102: In response to a vehicle power-on signal, read a vehicle safety identifier.

[0034] Here, the vehicle safety identifier is used to indicate the current safety status of the vehicle.

[0035] In this step, when the car is in the on gear, the entire vehicle is powered on, and the on-board controller responds to the vehicle power-on signal to read the vehicle safety identifier, and the safety identifier is stored in the vehicle's memory. For example, the memory can be a non-volatile memory (NVM).

[0036] Specifically, determining that the safety state indicated by the vehicle safety identifier is a collision state is performed in the following manner:

[0037] receiving collision data detected by the collision sensor;

[0038] The collision sensor includes a vehicle front end acceleration sensor and a vehicle rear end acceleration sensor. The vehicle front end acceleration sensor is installed at the vehicle's front anti-collision beam and the vehicle's A-pillar, and the vehicle rear end acceleration sensor is installed at the vehicle's rear anti-collision beam.

[0039] For example, a side acceleration sensor may also be included. The principle is the same as that of the front-end acceleration sensor and the rear-end acceleration sensor of the vehicle. Whether the side acceleration sensor is set depends on the vehicle configuration. If there is a side air curtain, it must be detected, and if not, it is not necessary to detect it.

[0040] Here, the acceleration sensor is a silicon capacitive micromechanical sensor, which has stable temperature characteristics, so no additional temperature compensation is required, and the signal-to-noise ratio is relatively high. This sensor has a built-in filter and amplifier, and has a self-diagnosis function, which can detect acceleration signals from the front and side (X-axis, Y-axis).

[0041] The acceleration sensor is an integrated ASIC (Application Specific Integrated Circuit) chip including a signal processing circuit, which receives acceleration signals and outputs the signals through a digital interface (SPI, Serial Peripheral Interface) after filtering and amplifying the signals.

[0042] Determine whether the collision data reaches a preset collision value;

[0043] For example, the preset collision value may be a critical value of the detonation strength of the airbag, or may be a manually set threshold value, which is not specifically limited here.

[0044] If the collision data reaches a preset collision value, the safety state indicated by the location storing the vehicle safety identifier in the control memory is controlled to be a collision state.

[0045] S103: When the safety state indicated by the vehicle safety identifier is a collision state, executing a collision sequence event according to a preset rule.

[0046] Here, the collision sequence event includes a plurality of sub-events, and the preset rule includes the number of executions of the collision sequence event and the execution interval of the collision sequence event.

[0047] For example, multiple sub-events include IBCM driving the left and right doors to unlock once each, driving the left and right hidden door handles to extend once, and the IBCM needs to execute multiple sub-events twice in total. The interval between multiple sub-events can be 3s, and at the same time, the left and right turn signals are driven to flash at a fixed frequency. Multiple sub-events can be executed simultaneously or in a sequence, which can be set manually.

[0048] The vehicle's current safety status is divided into collision status and non-collision status. When the safety status is a collision status, the collision sequence events must be executed according to the preset rules, and the door locking cannot be controlled. When the safety status is a non-collision status, the door locking can be controlled normally.

[0049] When a crash sequence event is executed, all latching operations are inhibited for at least 4 seconds.

[0050] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of the unlocking control method based on vehicle collision provided in an embodiment of the present application. Figure 2 As shown in the figure, the structural schematic diagram of the unlocking control method based on vehicle collision provided in an embodiment of the present application includes: an airbag controller 201, an on-board controller 202, a turn signal 203, a left door lock 204 of the vehicle and a right door lock 205 of the vehicle.

[0051] The airbag controller 201 (SRS, Supplementary Restraint System) is used to detect vehicle collision events. It is connected to the body controller through the CAN bus and a 0.5-diameter multi-core copper wire. When a collision occurs that satisfies the airbag deployment, the airbag controller 201 sends a multi-frame CAN signal with a period of 20ms, and at the same time sends a 200ms low-level-40ms high-level square wave signal through the 0.5-diameter multi-core copper wire. The above measures can achieve backup transmission of collision signals.

[0052] Here, the multi-frame CAN signal and the square wave signal are both collision signals sent by the airbag controller 201 to the vehicle controller 202 .

[0053] Normally, the period of signal transmission between the airbag controller 201 and the vehicle controller 202 is 100ms. When the airbag pops out in a collision, the period of signal transmission between the airbag controller 201 and the vehicle controller 202 is 20ms.

[0054] The airbag controller 201 sends a low-level square wave signal within 200ms through a 0.5-diameter multi-core copper wire, and then sends a high-level square wave signal in the next 40ms. The period of signal transmission between the airbag controller 201 and the vehicle controller 202 is 240ms.

[0055] Preferably, when the on-board controller 202 receives any collision signal, the on-board controller 202 uses a dedicated non-volatile memory to record the safety status of the vehicle as "collision". Only when the collision sequence event is completed, the power of the entire vehicle is switched to a non-ON position, and the state of any door changes from open to closed, the on-board controller 202 can set the safety status of the vehicle recorded in the non-volatile memory to "non-collision".

[0056] Specifically, when the safety status of the vehicle is "collision", the on-board controller 202 does not allow the vehicle to perform a locking operation to prevent false triggering in an emergency.

[0057] The vehicle left door lock 204 is connected to the vehicle controller 202 via a first control line, and the vehicle right door lock 205 is connected to the vehicle controller 202 via a second control line.

[0058] At the same time, after the vehicle is powered on, the on-board controller 202 will give priority to reading the safety status of the vehicle in the non-volatile memory. If the safety status of the vehicle is "collision", the on-board controller 202 will continue to execute the collision sequence events until the safety status of the vehicle is set to "non-collision", which will effectively solve the problem of the door being unable to be unlocked due to a brief power outage caused by the impact during a collision.

[0059] In an optional embodiment, when the door lock is in a thermal protection state, the vehicle door is allowed to be unlocked. Here, the thermal protection state means that when the motor controlling the door lock receives unlocking signals multiple times, the door lock is considered to be in a thermal protection state.

[0060] 4 seconds after the locking operation is prohibited during the collision sequence event, all locking operations remain prohibited until all of the following judgment conditions are met.

[0061] For example, the judgment condition may be that the power state is not in the ON position, and the state of any door among the four doors of the vehicle is changed from the open state to the closed state.

[0062] In an optional embodiment, after executing the collision sequence event according to the preset rule, monitoring whether the state of the door is converted from the open state to the closed state;

[0063] Here, if the door state of any of the four doors is converted from an open state to a closed state, it means that the door has been opened before, and the person inside the vehicle opened the door to leave the vehicle by himself or a person outside the vehicle opened the door to rescue the person inside the vehicle.

[0064] If the door state changes from an open state to a closed state, it is determined whether the vehicle power state is switched to a non-ON position;

[0065] Here, after the vehicle loses power briefly due to a collision, the vehicle automatically restores power or the occupant starts the ignition to restore power to the vehicle, and all devices in the vehicle are working normally. When it is detected that the power status of the vehicle is switched to a non-ON position, it means that the occupant has turned off the power in the vehicle, and the safety of the occupants can be ensured.

[0066] In an optional embodiment, the power state of the vehicle is switched to a non-ON position, which can be understood as the power state of the vehicle is switched from the ON position to the OFF position or the ACC (Accessory) position. The OFF position usually means that the vehicle's power system is in the off state. At this time, most of the vehicle's electrical equipment will be powered off, and the vehicle will enter sleep or standby mode. The ACC position indicates that some of the vehicle's electrical equipment (such as the radio, windows, etc.) have been powered on, but the engine has not yet started, both indicating that the power state of the vehicle has changed from the ON position.

[0067] If the power state of the vehicle is switched to a non-ON position, the safety state indicated by the location storing the vehicle safety identifier in the control memory is a non-collision state.

[0068] After each vehicle start-up, when the safety state indicated by the vehicle safety identifier is read as a non-collision state, a collision signal is received and the safety state indicated by the location storing the vehicle safety identifier in the memory is controlled to change from the non-collision state to the collision state.

[0069] Unlocked doors are identified by:

[0070] Obtaining the collision situation of the vehicle, which includes the collision part of the vehicle and the collision degree of the vehicle;

[0071] The door unlocking strategy is determined according to the collision situation of the vehicle, and the door unlocking strategy includes driver side door unlocking, passenger side door unlocking and rear door unlocking.

[0072] The unlocking control method, device and system based on vehicle collision provided by the embodiment of the present application include: receiving a vehicle power-on signal; in response to the vehicle power-on signal, reading a vehicle safety identifier, the vehicle safety identifier is used to indicate the current safety state of the vehicle; when the safety state indicated by the vehicle safety identifier is a collision state, executing a collision sequence event according to a preset rule, the collision sequence event includes multiple sub-events, and the preset rules include the number of executions for the collision sequence event and the execution interval of the collision sequence event. Through the present application, it is ensured that the vehicle can be automatically unlocked after a short power outage due to a collision, which improves the unlocking safety of the vehicle and ensures the safety of the vehicle and the driver and passengers.

[0073] The signal transmission backup design between the airbag controller 201 and the vehicle controller 202 of the present application ensures that the collision signal is not lost; the signal transmission between the left and right door locks and the vehicle controller 202 is controlled separately, which effectively improves the door lock unlocking rate; by optimizing the collision unlocking algorithm, the unlocking rate under the condition of short-term power failure during collision is effectively improved; a non-volatile memory is used to memorize the collision status, and the vehicle controller 202 needs to read the collision status after restarting to ensure that the vehicle controller 202 can unlock the door after power failure and restarting; when the door lock is thermally protected and the safety status of the vehicle is "collision", the vehicle controller 202 only allows unlocking to prevent misoperation in emergency situations.

[0074] Based on the same inventive concept, an unlocking control device based on vehicle collision corresponding to the unlocking control method based on vehicle collision is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the above-mentioned unlocking control method based on vehicle collision in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0075] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of an unlocking control device based on vehicle collision provided by an embodiment of the present application. Figure 3 As shown in , the vehicle collision-based unlocking control device 300 includes:

[0076] Receiving module 301, used to receive the vehicle power-on signal;

[0077] A reading module 302 is used to read a vehicle safety identifier in response to a vehicle power-on signal, wherein the vehicle safety identifier is used to indicate a current safety status of the vehicle;

[0078] The execution module 303 is used to execute a collision sequence event according to a preset rule when the safety state indicated by the vehicle safety identifier is a collision state. The collision sequence event includes multiple sub-events, and the preset rule includes the execution number of the collision sequence event and the execution interval of the collision sequence event.

[0079] The embodiment of the present application further provides an unlocking control system based on vehicle collision, and the unlocking control system based on vehicle collision includes:

[0080] A memory, integrated into the onboard controller, to store a vehicle security identifier;

[0081] The on-board controller is configured to perform the following processing:

[0082] Receive vehicle power-on signal;

[0083] In response to a vehicle power-on signal, a vehicle safety identifier is read, where the vehicle safety identifier is used to indicate a current safety status of the vehicle;

[0084] When the safety state indicated by the vehicle safety identifier is a collision state, a collision sequence event is executed according to a preset rule, wherein the collision sequence event includes a plurality of sub-events, and the preset rule includes an execution count and an execution interval for the collision sequence event.

[0085] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0086] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0087] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0088] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0089] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0090] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An unlocking control method based on vehicle collision, characterized in that: include: Receive vehicle power-on signal; In response to a vehicle power-on signal, a vehicle safety identifier is read, where the vehicle safety identifier is used to indicate a current safety status of the vehicle; When the safety state indicated by the vehicle safety identifier is a collision state, a collision sequence event is executed according to a preset rule, wherein the collision sequence event includes a plurality of sub-events, and the preset rule includes an execution count and an execution interval for the collision sequence event.

2. The method according to claim 1, characterized in that The safety status indicated by the vehicle safety identifier is determined to be a crash status by: receiving collision data detected by the collision sensor; Determining whether the collision data reaches a preset collision value; If the collision data reaches a preset collision value, the safety state indicated by the location storing the vehicle safety identifier in the control memory is controlled to be a collision state.

3. The method according to claim 2, characterized in that The method further comprises: After executing the collision sequence event according to the preset rules, monitoring whether the door state is changed from the open state to the closed state; If the door state is changed from an open state to a closed state, determining whether the power state of the vehicle is switched to a non-ON position; If the power state of the vehicle is switched to a non-ON position, the safety state indicated by the position storing the vehicle safety identifier in the memory is controlled to be a non-collision state, and the non-collision state allows the door to be locked.

4. The method according to claim 1, characterized in that: The method further comprises: When the safety state indicated by the vehicle safety identifier is read as a non-collision state, a collision signal is received, and the safety state indicated by the location storing the vehicle safety identifier in the memory is controlled to change from the non-collision state to the collision state.

5. The method according to claim 1, characterized in that Unlocked doors are identified by: Acquiring a vehicle collision situation, wherein the vehicle collision situation includes a collision position of the vehicle and a collision degree of the vehicle; Determine the strategy for unlocking the doors based on the vehicle collision situation.

6. The method according to claim 5, characterized in that The door unlocking strategy includes driver side door unlocking, passenger side door unlocking and rear door unlocking.

7. The method according to claim 1, characterized in that The vehicle power-on signal indicates that the vehicle gear is in the full vehicle power-on gear.

8. The method according to claim 2, characterized in that: The collision sensor includes a vehicle front end acceleration sensor and a vehicle rear end acceleration sensor. The front-end acceleration sensor of the vehicle is installed at the front anti-collision beam position of the vehicle and the A-pillar position of the vehicle, and the rear-end acceleration sensor of the vehicle is installed at the rear anti-collision beam position of the vehicle.

9. An unlocking control device based on vehicle collision, characterized in that: include: A receiving module, used to receive the vehicle power-on signal; A reading module, used to read a vehicle safety identifier in response to a vehicle power-on signal, wherein the vehicle safety identifier is used to indicate a current safety status of the vehicle; An execution module is used to execute a collision sequence event according to a preset rule when the safety state indicated by the vehicle safety identifier is a collision state, wherein the collision sequence event includes multiple sub-events, and the preset rule includes the execution number of the collision sequence event and the execution interval of the collision sequence event.

10. An unlocking control system based on vehicle collision, characterized in that: include: A memory, integrated into the onboard controller, to store a vehicle security identifier; The on-board controller is configured to perform the following processing: Receive vehicle power-on signal; In response to a vehicle power-on signal, a vehicle safety identifier is read, where the vehicle safety identifier is used to indicate a current safety status of the vehicle; When the safety state indicated by the vehicle safety identifier is a collision state, a collision sequence event is executed according to a preset rule, wherein the collision sequence event includes a plurality of sub-events, and the preset rule includes an execution count and an execution interval for the collision sequence event.

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