A vehicle collision-based unlocking control method, device and system

Abstract

The application provides a vehicle collision-based unlocking control method, device and system. The method comprises the following steps: receiving a whole vehicle power-on signal; reading a vehicle safety identifier in response to the whole vehicle power-on signal, the vehicle safety identifier being used to indicate a current safety state of the vehicle; and executing 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 comprising a plurality of sub-events, and the preset rule comprising an execution number of the collision sequence event and an execution interval of the collision sequence event. Through the application, the vehicle can be automatically unlocked after a short power failure caused by a collision, the unlocking safety of the vehicle is improved, and the safety of the vehicle and the driver and passengers is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a vehicle collision-based unlocking control method, device and system. BACKGROUND

[0002] At present, with the promotion 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 is subjected to a severe collision, the hidden door handle and electric lock cannot be automatically unlocked, which leads to situations where rescue personnel cannot open the vehicle door from the outside in time, thereby increasing the risk of the driver being trapped.

[0003] In view of the above problems, automobile manufacturers have developed a collision unlocking function. In a typical vehicle door unlocking system, when a vehicle equipped with an airbag is subjected to a certain degree of collision accident, the vehicle is subjected to a huge impact, and there is a situation of temporary power failure of the entire vehicle. If the vehicle door is temporarily powered off during the unlocking process, the vehicle door cannot be unlocked.

[0004] Using a backup power supply or a large-capacity power supply to power the entire vehicle increases the number of separate storage batteries and power supply lines, resulting in a high implementation cost of the vehicle door unlocking in the event of a collision accident. SUMMARY

[0005] Therefore, 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, the embodiments of the present application provide a vehicle collision-based unlocking control method, which comprises: receiving a vehicle power-on signal; reading a vehicle safety identifier in response to the vehicle power-on signal, the vehicle safety identifier being used to indicate a current safety state of the vehicle; and executing 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 comprising a plurality of sub-events, and the preset rule comprising an execution number of the collision sequence event and an execution interval of 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 by: receiving collision data detected by a collision sensor; determining whether the collision data reaches a preset collision value; and controlling the position of the vehicle safety identifier stored in the memory to indicate a collision state when the collision data reaches the preset collision value.

[0008] In an optional embodiment of the present application, the method further comprises: monitoring whether the door state is converted from the open state to the closed state after the collision sequence event is performed according to the preset rule; if the door state is converted from the open state to the closed state, determining whether the power state of the vehicle is switched to the non-ON gear; if the power state of the vehicle is switched to the non-ON gear, controlling the safety state indicated by the position where the vehicle safety identifier is stored in the memory to be the 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 further comprises: receiving a collision signal when it is read that the safety state indicated by the vehicle safety identifier is the non-collision state, and controlling the safety state indicated by the position where the vehicle safety identifier is stored in the memory to be converted from the non-collision state to the collision state.

[0010] In an optional embodiment of the present application, the unlocked door is determined by: obtaining a vehicle collision condition, the vehicle collision condition including a collision position of the vehicle and a collision degree of the vehicle; and determining an unlocking strategy of the door according to the vehicle collision condition.

[0011] In an optional embodiment of the present application, the unlocking strategy of the door includes unlocking of a driver side door, unlocking of a front passenger side door, and unlocking of a rear door.

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

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

[0014] In a second aspect, the embodiments of the present application further provide an unlocking control device based on vehicle collision, the device comprising: a receiving module configured to receive a vehicle power-on signal; a reading module configured to read a vehicle safety identifier in response to the vehicle power-on signal, the vehicle safety identifier being used to indicate a current safety state of the vehicle; and an execution module configured to perform 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 including a plurality of sub-events, and the preset rule including a number of times of execution of the collision sequence event and an execution interval of the collision sequence event.

[0015] In a third aspect, the embodiments of the present application further provide a vehicle collision-based unlocking control system, which comprises a memory integrated in a vehicle controller and configured to store a vehicle safety identifier; and the vehicle controller is configured to perform the following processing: receiving a vehicle power-on signal; reading the vehicle safety identifier in response to the vehicle power-on signal, the vehicle safety identifier being used to indicate a current safety state of the vehicle; and performing 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 comprising a plurality of sub-events, and the preset rule comprising a number of times of execution of the collision sequence event and an execution interval of the collision sequence event.

[0016] The vehicle collision-based unlocking control method, device and system provided by the embodiments of the present application comprise the following steps: receiving a vehicle power-on signal; reading a vehicle safety identifier in response to the vehicle power-on signal, the vehicle safety identifier being used to indicate a current safety state of the vehicle; and performing 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 comprising a plurality of sub-events, and the preset rule comprising a number of times of execution of the collision sequence event and an execution interval of the collision sequence event. Through the embodiments of the present application, the vehicle can be automatically unlocked after a short power-off caused by a collision, the unlocking safety of the vehicle is improved, and the safety of the vehicle and the driver and passengers is ensured.

[0017] In order to make the above objectives, features and advantages of the present application more apparent, the following will specifically describe preferred embodiments in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The flowchart of the vehicle collision-based unlocking control method provided by the embodiments of the present application;

[0020] Figure 2 The structural schematic diagram of the vehicle collision-based unlocking control method provided by the embodiments of the present application;

[0021] Figure 3 The structural schematic diagram of the vehicle collision-based unlocking control device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application and are not all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by a person skilled in the art without creative work belongs to the scope of protection of the present application.

[0023] Firstly, the application scenarios applicable to the present application are introduced. The present application can be applied to the field of automobile technology.

[0024] It is found through research that when a vehicle is subjected to a severe collision, the hidden door handle and the electric lock cannot be automatically unlocked, so that rescue personnel cannot open the door from the outside in time. Therefore, each automobile manufacturer has developed a collision unlocking function. In a typical door unlocking system, when a vehicle equipped with an airbag is subjected to a certain degree of collision accident, the vehicle bears a huge impact, and there is a situation of temporary power failure of the vehicle. If the vehicle is temporarily powered off during the execution of the door unlocking process, the door cannot be unlocked. If a backup power supply or a large-capacity power supply is used to power the vehicle, a separate storage battery and power supply line are added, resulting in a high implementation cost of the door unlocking under a collision accident.

[0025] Based on this, the embodiments of the present application provide an unlocking control method, device and system based on vehicle collision. The method comprises: 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 safety state currently taken by 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 comprising a plurality of sub-events, and the preset rule comprising an execution number of the collision sequence event and an execution interval of the collision sequence event. Through the present application, it is ensured that the vehicle can be automatically unlocked after a temporary power failure caused by a collision, the unlocking safety of the vehicle is improved, and the safety of the vehicle and the driver and passengers is ensured.

[0026] The execution subject of the method of the present application is an on-board controller (IBCM, Integrated Body Control Module). The IBCM is a highly integrated vehicle body control module. It adds more communication interfaces and functions to the BCM, such as keyless entry, one-key start, etc. The IBCM integrates multiple communication protocols and multiple CAN / LIN nodes, and can centrally control various functions of the vehicle body.

[0027] The IBCM has the advantages of highly integrated design, saving space and cost, and improving the intelligent level of the automobile. It meets the functional safety design requirements, provides multiple communication protocol modes, supports multiple CAN / LIN nodes, and meets the design requirements of the body control module (BCM). In addition, the IBCM also supports single antenna frequency hopping reception, anti-interference, and optimizes the cost.

[0028] The method of the present application is applicable to the case where the vehicle is powered off at the moment of collision (such as loose connections or loose power connections, etc.), resulting in the program running without executing subsequent unlocking operations, and the power is turned off. After the power is restored, the IBCM will return to the power-on state. The airbag is ejected at the moment of vehicle collision, and the power is temporarily disconnected.

[0029] For example, the position of the temporary power failure in the present application can be the connection between the battery and the vehicle controller IBCM, and the connection between the vehicle door and the vehicle controller IBCM. In the present application, the left and right doors are controlled separately, and at least one door can be unlocked when a side collision occurs. The specific position is not limited here, which can be a loose connector between vehicle devices, or a temporary short circuit of a vehicle device.

[0030] Please refer to Figure 1 , Figure 1 The flowchart of the unlocking control method based on vehicle collision provided by the embodiment of the present application is shown in FIG. 1. Figure 1 The unlocking control method based on vehicle collision provided by the embodiment of the present application includes the following steps.

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

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

[0033] S102, reading a vehicle safety identifier in response to the vehicle power-on signal.

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

[0035] In this step, when the automobile is in the on gear, the vehicle is powered on, and the vehicle controller reads the vehicle safety identifier in response to the vehicle power-on signal. The safety identifier is stored in the memory of the vehicle. For example, the memory can be a non-volatile memory (NVM).

[0036] Specifically, the safety state indicated by the vehicle safety identifier is determined to be a collision state by the following method:

[0037] The receiving collision sensor receives the detected collision data;

[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 a front bumper beam position and an A-pillar position of the vehicle, and the vehicle rear end acceleration sensor is installed at a rear bumper beam position of the vehicle.

[0039] The example can further include a side acceleration sensor, the principle of which is the same as that of the vehicle front end acceleration sensor and the vehicle rear end acceleration sensor, and whether the side acceleration sensor is arranged depends on the vehicle configuration, that is, whether a side curtain is arranged.

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

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

[0042] The collision data is determined whether to reach a preset collision value;

[0043] The example can be a safety airbag point explosion intensity threshold value, or a manually set threshold value, which is not limited here.

[0044] If the collision data reaches the preset collision value, the safety state indicated by the position where the vehicle safety identifier is stored in the memory is set to a collision state.

[0045] S103, 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.

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

[0047] The example includes that the plurality of sub-events includes that the IBCM drives the left and right doors to be unlocked once, and drives the left and right hidden door handles to be extended once, the IBCM needs to execute the plurality of sub-events 2 times, the interval of the plurality of sub-events can be 3s, and the left and right turn signals are driven to flash at a fixed frequency at the same time. The plurality of sub-events can be executed simultaneously or in a certain order, which can be manually set.

[0048] The safety state of the vehicle currently in is divided into a collision state and a non-collision state, when the safety state is the collision state, a collision sequence event needs to be executed according to a preset rule, and the vehicle door cannot be controlled to be locked, when the safety state is the non-collision state, the vehicle door can be normally controlled to be locked.

[0049] When the collision sequence event is executed, all locking operations are prohibited for at least 4 seconds.

[0050] Please refer to Figure 2 , Figure 2 The structure schematic diagram of the unlocking control method based on vehicle collision provided by the embodiment of the application is shown in the figure. Figure 2 The structure schematic diagram of the unlocking control method based on vehicle collision provided by the embodiment of the application is shown in the figure.

[0051] The SRS (Supplementary Restraint System) is used for detecting a vehicle collision event, connected with the vehicle body controller through a CAN bus and a 0.5 line diameter multi-core copper wire, when a collision occurs which meets the airbag ejection, the SRS sends multiple frames of CAN signals with a period of 20 ms, and sends a 200 ms low level-40 ms high level square wave signal through the 0.5 line diameter multi-core copper wire, through the above measures, the backup transmission of the collision signal can be realized.

[0052] Here, the multiple frames of CAN signals and the square wave signals are all collision signals sent by the SRS to the vehicle controller.

[0053] The period of the signal transmission between the SRS and the vehicle controller is 100 ms, when the vehicle is in collision and the airbag is ejected, the period of the signal transmission between the SRS and the vehicle controller is 20 ms.

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

[0055] Preferably, after receiving any crash signal, the vehicle controller 202 records the safety state of the vehicle as "crash" in the dedicated non-volatile memory, and only when the crash sequence event is completed, the power supply of the vehicle is switched to the non-ON mode, and any door state is changed from open to closed, the vehicle controller 202 can set the safety state of the vehicle recorded in the non-volatile memory as "non-crash".

[0056] In particular, when the safety state of the vehicle is "crash", the vehicle controller 202 does not allow the vehicle to perform the locking operation, preventing false triggering in an emergency.

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

[0058] Meanwhile, after the power supply of the vehicle is turned on, the vehicle controller 202 will first read the safety state of the vehicle in the non-volatile memory. If the safety state of the vehicle is "crash", the vehicle controller 202 will continue to execute the crash sequence event until the safety state of the vehicle is set as "non-crash", which will effectively solve the problem that the doors cannot be unlocked due to a short power failure during the crash.

[0059] In an optional embodiment, when the door lock is in a thermal protection state, the door is allowed to be unlocked, where the thermal protection state is that the motor controlling the door lock receives an unlocking signal multiple times, and it is considered that the door lock is in the thermal protection state.

[0060] After executing the crash sequence event for 4 seconds to prohibit the locking operation, all locking operations are still prohibited until all the following conditions are met.

[0061] For example, the conditions can be that the power supply state is in the non-ON mode, and the state of any door of the four doors of the vehicle is changed from the open state to the closed state.

[0062] In an optional embodiment, after executing the crash sequence event according to the preset rule, it is monitored whether the door state is changed from the open state to the closed state.

[0063] Here, the door state of any door of the four doors is changed from the open state to the closed state, which means that the door has been opened, and the person inside the vehicle opens the door to leave the vehicle or the person outside the vehicle opens the door to rescue the person inside the vehicle.

[0064] If the door state is changed from the open state to the closed state, it is determined whether the power supply state of the vehicle is switched to the non-ON mode.

[0065] Here, after the vehicle is powered off for a short time after a collision, the vehicle is automatically powered on or the vehicle is powered on by a person inside the vehicle, and the devices inside the vehicle are normally operated, and when it is detected that the power state of the vehicle is switched to a non-ON state, it is indicated that the person inside the vehicle turns off the power inside the vehicle, and the safety of the person inside the vehicle can be determined.

[0066] In an optional embodiment, the power state of the vehicle is switched to a non-ON state, which can be understood as the power state of the vehicle being switched from the ON state to the OFF state or the ACC (Accessory) state. The OFF state usually represents that the power supply system of the vehicle is in an off state, at this time most of the electrical appliances of the vehicle will be powered off, and the vehicle enters a sleep or standby mode. The ACC state represents that part of the electrical appliances of the vehicle (such as a radio, a window, etc.) are powered on, but the engine has not been started, which all represent that the power state of the vehicle is changed from the ON state.

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

[0068] After each start of the vehicle, when it is read that the safety state indicated by the vehicle safety identifier is a non-collision state, a collision signal is received, and the safety state indicated by the position where the vehicle safety identifier is stored in the control memory is switched from a non-collision state to a collision state.

[0069] The unlocked door is determined in the following manner:

[0070] Obtain the situation of the vehicle in a collision, which includes the collision position of the vehicle and the collision degree of the vehicle;

[0071] Determine the unlocking strategy of the door according to the situation of the vehicle in a collision, which includes unlocking the driver's side door, unlocking the co-driver's side door, and unlocking the rear row door.

[0072] The unlocking control method, device and system based on vehicle collision provided by the embodiments of the present application, the method comprises: receiving a whole vehicle power-on signal; in response to the whole vehicle power-on signal, reading a vehicle safety identifier, the vehicle safety identifier being used to indicate a safety state in which the vehicle currently locates; 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 comprising a plurality of sub-events, and the preset rule comprising an execution number of the collision sequence event and an 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-off after a collision, the unlocking safety of the vehicle is improved, and the safety of the vehicle and the driver and passenger is ensured.

[0073] The signal transmission backup design between the airbag controller 201 and the vehicle-mounted controller 202 of the application guarantees that the collision signal is not lost; the signal transmission between the left and right door locks and the vehicle-mounted controller 202 is separately controlled, effectively improving the unlocking rate of the door lock; by optimizing the collision unlocking algorithm, the unlocking rate under the condition of temporary power failure during the collision is effectively improved; the non-volatile memory is used to memorize the collision state, and the vehicle-mounted controller 202 needs to read the collision state after restarting, so as to guarantee that the vehicle-mounted controller 202 can unlock the door after power failure and restart; when the door lock thermal protection and the safety state of the vehicle are “collision”, the vehicle-mounted controller 202 only allows unlocking, preventing misoperation in an emergency.

[0074] Based on the same inventive concept, the application embodiment also provides a vehicle collision-based unlocking control device corresponding to the vehicle collision-based unlocking control method. Since the principle of the device in the application embodiment solves the problem similarly to the vehicle collision-based unlocking control method described above, the implementation of the device can be referred to the implementation of the method, and the repeated parts will not be described.

[0075] Please refer to Figure 3 , Figure 3 The structure diagram of a vehicle collision-based unlocking control device provided by the application embodiment is shown in the figure. Figure 3 As shown in the figure, the vehicle collision-based unlocking control device 300 includes:

[0076] The receiving module 301 is configured to receive a vehicle power-on signal.

[0077] The reading module 302 is configured to read a vehicle safety identifier in response to the vehicle power-on signal, the vehicle safety identifier being used to indicate the safety state of the vehicle.

[0078] The execution module 303 is configured 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 including a plurality of sub-events, and the preset rule including the execution times of the collision sequence event and the execution interval of the collision sequence event.

[0079] The application embodiment also provides a vehicle collision-based unlocking control system, which includes:

[0080] The memory is integrated in the vehicle-mounted controller to store the vehicle safety identifier.

[0081] The vehicle-mounted controller is configured to perform the following processing:

[0082] Receive a vehicle power-on signal.

[0083] In response to a whole vehicle power-on signal, a vehicle safety identifier is read, the vehicle safety identifier being used to indicate a safety state in which the vehicle is currently located;

[0084] When the safety state indicated by the vehicle safety identifier is a crash state, a crash sequence event is executed according to a preset rule, the crash sequence event including a plurality of sub-events, and the preset rule including a number of times of execution of the crash sequence event and an execution interval of the crash sequence event.

[0085] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0086] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other manners. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.

[0087] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

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

[0089] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a nonvolatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application essentially or the parts of the prior art that make contributions or parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0090] Finally, it should be noted that: the above-described embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can make modifications or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some of the technical features. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vehicle collision-based unlocking control method, characterized in that, include: Receive the vehicle power-on signal; In response to the vehicle power-on signal, the vehicle safety identifier is read, which is used to indicate the current safety status of the vehicle; When the safety status indicated by the vehicle safety identifier is a collision state, a collision sequence event is executed according to a preset rule. The collision sequence event includes multiple sub-events, and the preset rule includes the number of times the collision sequence event is executed and the execution interval of the collision sequence event. The collision state is determined by the following method: Receive collision data detected by the collision sensors; Determine 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 where the vehicle safety identifier is stored in the memory is controlled to be a collision state. The method further includes: After executing the collision sequence event according to the preset rules, monitor whether the door status changes from open to closed. If the door status changes from open to closed, then determine whether the vehicle's power status has switched to non-ON. If the vehicle's power state is switched to the non-ON position, the safety state indicated by the location of the vehicle safety identifier stored in the memory is controlled to be a non-collision state, which allows the doors to be locked.

2. The method according to claim 1, characterized in that, The method further includes: When the vehicle safety identifier indicates a non-collision state, a collision signal is received, and the safety state indicated by the location of the vehicle safety identifier stored in the memory is changed from a non-collision state to a collision state.

3. The method according to claim 1, characterized in that, The unlocked car door can be identified using the following methods: The information obtained regarding a vehicle collision includes the location and extent of the collision. The strategy for unlocking the car doors is determined based on the circumstances of the vehicle collision.

4. The method according to claim 3, characterized in that, The door unlocking strategies include unlocking the driver's side door, the passenger side door, and the rear doors.

5. The method according to claim 1, characterized in that, The vehicle power-on signal indicates that the vehicle is in the fully powered-on position.

6. The method according to claim 1, characterized in that, The collision sensors include a front-end acceleration sensor and a rear-end acceleration sensor. The vehicle front acceleration sensor is installed at the front bumper beam and the A-pillar of the vehicle, and the vehicle rear acceleration sensor is installed at the rear bumper beam of the vehicle.

7. A vehicle collision-based unlocking control device, characterized in that, include: The receiving module is used to receive the vehicle's power-on signal; The reading module is used to read the vehicle safety identifier in response to the vehicle power-on signal. The vehicle safety identifier is used to indicate the current safety status of the vehicle. An execution module is configured to execute a collision sequence event according to preset rules 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 rules include the number of executions for the collision sequence event and the execution interval of the collision sequence event. The execution module is further configured to determine that the safety state indicated by the vehicle safety identifier is a collision state by: receiving collision data detected by a collision sensor; determining whether the collision data reaches a preset collision value; and if the collision data reaches the preset collision value, controlling the safety state indicated by the location where the vehicle safety identifier is stored in the memory to be a collision state. The execution module is further configured to monitor whether the door state changes from open to closed after executing the collision sequence event according to preset rules; if the door state changes from open to closed, it determines whether the power state of the vehicle is switched to non-ON; if the power state of the vehicle is switched to non-ON, it controls the safety state indicated by the location of the vehicle safety identifier stored in the memory to be a non-collision state, and the non-collision state allows the door to be locked.

8. A vehicle collision-based unlocking control system, characterized in that, include: The memory, integrated into the vehicle controller, stores vehicle safety identifiers; The vehicle controller is configured to perform the following processes: Receive the vehicle power-on signal; In response to the vehicle power-on signal, the vehicle safety identifier is read, which is used to indicate the current safety status of the vehicle; When the safety status indicated by the vehicle safety identifier is a collision state, a collision sequence event is executed according to a preset rule. The collision sequence event includes multiple sub-events, and the preset rule includes the number of times the collision sequence event is executed and the execution interval of the collision sequence event. The collision state is determined by the following method: Receive collision data detected by the collision sensors; Determine 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 where the vehicle safety identifier is stored in the memory is controlled to be a collision state. The method also includes: After executing the collision sequence event according to the preset rules, monitor whether the door status changes from open to closed. If the door status changes from open to closed, then determine whether the vehicle's power status has switched to non-ON. If the vehicle's power state is switched to the non-ON position, the safety state indicated by the location of the vehicle safety identifier stored in the memory is controlled to be a non-collision state, which allows the doors to be locked.

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