Automobile collision unlocking method, device and equipment, storage medium and program product

Abstract

The invention provides an automobile collision unlocking method, device and equipment, a storage medium and a program product, and the method comprises the steps: detecting a collision signal in a target memory when the power supply voltage of a whole automobile recovers to a normal working voltage value from a normal working voltage value or below; and if the collision signal is detected, a vehicle door unlocking instruction is sent to a vehicle body control module. The target memory is arranged to record the collision signal, the collision signal in the target memory is detected when the power supply voltage of the whole vehicle recovers to the normal working voltage from below the normal working voltage, the target memory can still record the collision signal after power failure, and even if the power supply of the whole vehicle is switched to a closed gear after the vehicle is collided, the collision signal can be detected. After the vehicle body controller is reset, the unlocking instruction cannot be executed, collision can still be detected through the collision signal in the target memory, the vehicle door unlocking instruction is sent to the vehicle body control module to unlock the vehicle door, and reliable unlocking of the vehicle door after collision is achieved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a method, device, equipment, storage medium and program product for unlocking a car during collision. Background Art

[0002] Automobile safety is an important issue that consumers are concerned about. After a car collision, whether the car door can be automatically unlocked in time is crucial to the escape of the passengers in the car.

[0003] In the prior art, after a car collision occurs, the body control module BCM (Body Control Module) of the car detects a valid collision signal from the ACU (airbag control unit), and then the body control module BCM executes door unlocking.

[0004] However, when a collision occurs, the power supply voltage of the entire vehicle may fluctuate, causing the body control module BCM to lose power and then reset. After the body control module BCM is reset, it can no longer execute the unlocking command based on the signal before power failure, resulting in the door being unable to be unlocked after a car collision and unable to be opened from the outside. Summary of the invention

[0005] The present invention provides a car collision unlocking method, device, equipment, storage medium and program product, which are used to solve the defect that the car door cannot be unlocked after the car collision in the prior art, and ensure that the car door can be reliably unlocked after the car collision.

[0006] The present invention provides a vehicle collision unlocking method, comprising: When the power supply voltage of the vehicle recovers from below the normal operating voltage value to the normal operating voltage value, detecting the collision signal in the target memory; If a collision signal is detected, a door unlock command is sent to the body control module.

[0007] The automobile collision unlocking method provided by the present invention records the collision signal by setting a target memory, and when the power supply voltage of the whole vehicle recovers from below the normal working voltage to the normal working voltage, detects the collision signal in the target memory, and if detected, sends a door unlocking instruction to the body control module to unlock the door. The target memory can still record the collision signal after power failure. Therefore, even if the power supply of the whole vehicle is switched to the off gear after the automobile collision, the body controller BCM cannot memorize and execute the unlocking instruction after reset, the collision signal in the target memory can still be used to detect the occurrence of the collision and send the door unlocking instruction to the body control module, so that the door can be reliably unlocked after the automobile collision.

[0008] According to a vehicle collision unlocking method provided by the present invention, the target memory is a storage capacitor.

[0009] In one embodiment of the vehicle collision unlocking method provided by the present invention, by setting the target memory as a storage capacitor, the collision signal can be memorized and recorded at a relatively low cost after the power supply of the entire vehicle is cut off.

[0010] According to a vehicle collision unlocking method provided by the present invention, the target memory is a storage capacitor in a multimedia interactive system of the vehicle.

[0011] In one embodiment of the vehicle collision unlocking method provided by the present invention, by setting the target memory to a storage capacitor in the vehicle's multimedia interaction system MMI, the effect of improving the reliability of door unlocking after a vehicle collision can be achieved without adding additional hardware.

[0012] According to a vehicle collision unlocking method provided by the present invention, sending a door unlocking instruction to a vehicle body control module comprises: Sending a door unlock command to the body control module more than once.

[0013] In one embodiment of the vehicle collision unlocking method provided by the present invention, by sending the door unlocking instruction to the body control module more than once, redundancy of the door unlocking instruction can be achieved, thereby improving the success rate of door unlocking after a collision.

[0014] A vehicle collision unlocking method provided by the present invention also includes: A collision signal sent by the airbag controller is received and recorded in the target memory.

[0015] In one embodiment of the automobile collision unlocking method provided by the present invention, by receiving the collision signal sent by the airbag controller and recording it in the target memory, there is no need to implement major modifications to the communication link in the vehicle, thereby reducing costs.

[0016] According to a vehicle collision unlocking method provided by the present invention, after receiving the collision signal sent by the airbag controller, the method comprises: Sending a door unlocking command to the body control module.

[0017] In one embodiment of the automobile collision unlocking method provided by the present invention, even if the power supply voltage of the entire vehicle does not recover from below the normal operating voltage value to the normal operating voltage value after the collision, after receiving the collision signal sent by the airbag controller ACU, a door unlocking instruction is sent to the body control module BCM, so that multiple redundancies of door unlocking can be achieved during the collision process, greatly improving the success rate of door unlocking.

[0018] The present invention also provides a vehicle collision unlocking device, comprising: A detection module, the detection module is used to detect a collision signal in a target memory when the power supply voltage of the whole vehicle recovers from below a normal operating voltage value to a normal operating voltage value; The unlocking module is used to send a door unlocking instruction to the body control module if a collision signal is detected.

[0019] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, any of the above-mentioned methods for unlocking a car by collision is implemented.

[0020] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the vehicle collision unlocking method as described above is implemented.

[0021] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the vehicle collision unlocking method described above is implemented.

[0022] The automobile collision unlocking method, device, equipment, storage medium and program product provided by the present invention record the collision signal by setting a target memory, and detect the collision signal in the target memory when the power supply voltage of the whole vehicle recovers from below the normal working voltage to the normal working voltage. If detected, a door unlocking instruction is sent to the body control module to unlock the door. The target memory can still record the collision signal after power failure. Therefore, even if the power supply of the whole vehicle is switched to the off gear after the automobile collision, the body controller BCM cannot remember and execute the unlocking instruction after reset, the collision signal in the target memory can still be used to detect the occurrence of the collision and send the door unlocking instruction to the body control module, so that the door can be reliably unlocked after the automobile collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The present invention is a flowchart of a method for unlocking a car in the event of a collision.

[0025] Figure 2 It is the power supply voltage monitoring diagram of the whole vehicle when the car collides.

[0026] Figure 3It is a timing diagram of sending unlocking instructions in the automobile collision unlocking method provided by the present invention.

[0027] Figure 4 It is a schematic diagram of the unlocking principle in the automobile collision unlocking method provided by the present invention.

[0028] Figure 5 It is a schematic diagram of the effect of the automobile collision unlocking method provided by the present invention.

[0029] Figure 6 It is a structural schematic diagram of the automobile collision unlocking device provided by the present invention.

[0030] Figure 7 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Automobile safety is an important issue that consumers are concerned about. After a car crashes, whether the door can be automatically unlocked in time is crucial for the escape of passengers in the car. In the prior art, after a car crashes, the body control module BCM (Body Control Module) of the car detects the effective collision signal of the ACU (airbag controller), and then the body control module BCM executes the door unlocking. However, when a collision occurs, the power supply voltage of the whole vehicle may fluctuate, causing the power supply of the whole vehicle to fluctuate, causing the body control module BCM to be powered off and then reset. After the body control module BCM is reset, it can no longer execute the operation of issuing an unlocking command based on the signal before the power failure, resulting in the door being unable to be unlocked after the car crashes, and the door cannot be opened from the outside.

[0033] In view of the defect in the prior art that car doors cannot be unlocked after a car collision, the present invention provides a car collision unlocking method, device, equipment, storage medium and program product to ensure that the car doors can be reliably unlocked after a car collision.

[0034] Combine the following Figure 1-Figure 5 The present invention describes the vehicle collision unlocking method provided by the present invention. Figure 1 As shown, the vehicle collision unlocking method comprises the steps of: S110, when the power supply voltage of the whole vehicle recovers from below the normal operating voltage to the normal operating voltage, detecting a collision signal in the target memory; S120: If a collision signal is detected, a door unlocking command is sent to a body control module.

[0035] In the prior art, the central control unlocking is usually performed after the body control module BCM detects a valid collision signal from the airbag controller ACU. However, after a car collision occurs (especially a frontal collision), the positive wiring harness will be short-circuited to the ground due to the backlog of collision force on the power line of the battery or DCDC, resulting in a sharp drop in the power supply voltage of the entire vehicle. Figure 2 This is the vehicle power supply voltage monitoring diagram during the E-NCAP (European New Car Assessment Program) vehicle evaluation process. Figure 2 It can be clearly seen that 20ms after the collision begins, the power supply voltage will drop sharply to below 3V, and the vehicle power supply will be directly powered off to the OFF position. Although the vehicle power supply voltage will be restored later, the body control module BCM will also be reset during this process because the power supply voltage drops below the normal working voltage. The reset BCM cannot memorize or record the collision signal, and thus cannot execute the collision unlocking command, resulting in the vehicle being unable to be unlocked and the door cannot be opened from the outside of the vehicle, affecting the safety of passengers.

[0036] The automobile collision unlocking method provided by the present invention records the collision signal by setting a target memory, and when the power supply voltage of the whole vehicle recovers from below the normal working voltage value to the normal working voltage value, detects the collision signal in the target memory, and if detected, sends a door unlocking instruction to the body control module to unlock the door. The target memory can still record the collision signal after power failure. Therefore, even if the power supply of the whole vehicle is switched to the off gear after the automobile collision, the body controller BCM cannot memorize and execute the unlocking instruction after reset, the collision signal in the target memory can still be used to detect the occurrence of the collision and send the door unlocking instruction to the body control module, so that the door can be reliably unlocked after the automobile collision.

[0037] The normal working voltage value of the vehicle power supply in the present invention is a value preset within the normal voltage range of the vehicle power supply. If the voltage of the vehicle power supply is below the normal working voltage value, it means that the voltage of the vehicle power supply is lower than the minimum value in the preset normal voltage range of the vehicle power supply. After a vehicle collision, the power supply of the vehicle drops due to the steep drop in the voltage of the vehicle power supply, and may drop to the normal working voltage. At this time, the power supply of the vehicle will switch to the OFF gear.

[0038] The target memory can record and memorize the collision signal after power failure. Therefore, when the vehicle power supply voltage is restored from the normal working voltage value to the normal working voltage value, the collision signal will not be lost and can be recorded in the target memory. The target memory can be a storage capacitor with low hardware cost and has the ability to record the collision signal within 2000ms after power failure.

[0039] In one possible implementation, a target memory can be independently set up to record the collision signal after the power supply of the whole vehicle is cut off, and the increased hardware cost is limited to the cost of the target memory. In order to reduce the application cost of the method provided by the present invention, the target memory in the method provided by the present invention is a storage capacitor in the multimedia interaction system MMI (Multi Media Interface) of the vehicle. The multimedia interaction system MMI itself is provided with a storage capacitor due to functional requirements. The car collision unlocking method provided by the present invention directly uses the storage capacitor in the multimedia interaction system MMI as the target memory to record the collision signal after the power supply of the whole vehicle is cut off. There is no need to increase additional hardware costs, which is more economical.

[0040] Furthermore, the method provided by the present invention can be executed by a controller in a multimedia interaction system. Furthermore, the multimedia interaction system MMI can include a central control display screen, and the controller in the multimedia interaction system MMI can be set in the central control display screen of the vehicle. In other words, the method provided by the present invention can be executed by the central control display screen of the vehicle.

[0041] In the method provided by the present invention, after the airbag controller ACU detects the collision signal, the collision signal is sent to the target memory for recording, such as Figure 4 As shown, after a collision occurs, the airbag controller ACU identifies a valid collision signal and sends it to the target memory in the multimedia interaction system MMI. At the same time, the collision signal can also be synchronously sent to the body control module BCM. If the power supply of the whole vehicle is not cut off after the collision, the BCM can also execute the door unlocking command normally to control the door unlocking. Since in the setting of the prior art, the collision signal is sent from the airbag controller ACU to the body control module BCM, the method provided by the present invention only needs to increase the target address of the collision signal sent by the airbag controller ACU, thereby reducing the modification cost of the communication link in the vehicle. If the power supply of the whole vehicle is cut off after the collision, after the power supply voltage of the whole vehicle returns to normal, the multimedia interaction system MMI sends the door unlocking command to the body control module BCM to achieve reliable unlocking of the door.

[0042] like Figure 3 As shown, in one embodiment of the method provided by the present invention, when the multimedia interaction system MMI sends a door unlocking command to the body control module BCM after the vehicle power supply voltage returns to normal, multiple door unlocking commands are sent to the body control module BCM to achieve multiple redundancy, thereby ensuring successful door unlocking after a vehicle collision and further improving the reliability of door unlocking after a vehicle collision. Figure 3In one embodiment shown, the door unlocking command may be sent twice to the body control module BCM, and the unlocking command may be sent 200ms after the vehicle power supply voltage is restored and 500ms thereafter respectively.

[0043] Furthermore, in a possible implementation, even if the power supply voltage of the vehicle does not drop sharply after the collision, that is, the power supply voltage of the vehicle does not recover from below the normal operating voltage value to the normal operating voltage value after the collision, after receiving the collision signal sent by the airbag controller ACU, the multimedia interaction system MMI also sends a door unlocking command to the body control module BCM. Further, after receiving the collision signal sent by the airbag controller ACU, even if the power supply voltage of the vehicle does not drop sharply, the multimedia interaction system MMI also sends multiple (such as 2) door unlocking commands to the body control module BCM, so that the door unlocking during the collision process has multiple redundancy, which greatly improves the unlocking success rate and ensures the reliability of door unlocking after the collision.

[0044] After sending the door unlock command to the body control module BCM, the collision signal in the target memory can be deleted or marked as processed.

[0045] The collision test was carried out based on the method provided by the present invention. The results are as follows Figure 5 As shown, from Figure 5 It can be seen that through the method provided by the present invention, the target memory can memorize the collision signal. Even if the power supply voltage of the whole vehicle drops sharply before the door is unlocked during the collision, the body control module BCM is reset, and the door of the whole vehicle can still be unlocked normally after the power supply voltage returns to normal, which verifies the effectiveness of the car collision unlocking method provided by the present invention.

[0046] The following is a description of the vehicle collision unlocking device provided by the present invention. The vehicle collision unlocking device described below and the vehicle collision unlocking method described above can be referred to in correspondence with each other. Figure 6 As shown, the vehicle collision unlocking device provided by the present invention includes the following modules: A detection module 610, which is used to detect a collision signal in a target memory when the power supply voltage of the vehicle recovers from below a normal operating voltage value to a normal operating voltage value; The unlocking module 620 is used to send a door unlocking instruction to the body control module if a collision signal is detected.

[0047] The automobile collision unlocking device provided by the present invention records the collision signal by setting a target memory. When the power supply voltage of the whole vehicle recovers from below the normal operating voltage value to the normal operating voltage value, the detection module detects the collision signal in the target memory. If detected, the unlocking module sends a door unlocking instruction to the body control module to unlock the door. The target memory can still record the collision signal after power failure. Therefore, even if the power supply of the whole vehicle is switched to the off gear after the automobile collision, the body controller BCM cannot memorize and execute the unlocking instruction after reset, the collision signal in the target memory can still be used to detect the occurrence of the collision and send the door unlocking instruction to the body control module, so that the door can be reliably unlocked after the automobile collision.

[0048] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, the target memory is a storage capacitor.

[0049] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, by setting the target memory as a storage capacitor, the collision signal can be memorized and recorded at a relatively low cost after the power supply of the entire vehicle is cut off.

[0050] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, the target memory is a storage capacitor in the vehicle's multimedia interaction system MMI.

[0051] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, by setting the target memory to a storage capacitor in the vehicle's multimedia interaction system MMI, the effect of improving the reliability of door unlocking after a vehicle collision can be achieved without adding additional hardware.

[0052] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, sending a door unlocking instruction to a vehicle body control module includes: Sending a door unlock command more than once to the body control module.

[0053] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, by sending the door unlocking instruction to the body control module more than once, redundancy of the door unlocking instruction can be achieved, thereby improving the success rate of door unlocking after a collision.

[0054] In a possible embodiment of the automobile collision unlocking device provided by the present invention, it also includes a receiving module, which is used to receive the collision signal sent by the airbag controller and record it in the target memory.

[0055] In a possible embodiment of the automobile collision unlocking device provided by the present invention, by receiving the collision signal sent by the airbag controller and recording it in the target memory, there is no need to implement major modifications to the communication link in the vehicle, thereby reducing costs.

[0056] In a possible embodiment of the vehicle collision unlocking device provided by the present invention, after receiving the collision signal sent by the airbag controller, the method includes: Sends door unlock command to the body control module.

[0057] In a possible embodiment of the automobile collision unlocking device provided by the present invention, even if the power supply voltage of the entire vehicle does not recover from below the normal operating voltage value to the normal operating voltage value after the collision, after receiving the collision signal sent by the airbag controller ACU, a door unlocking instruction is sent to the body control module BCM, so that multiple redundancies of door unlocking can be achieved during the collision process, greatly improving the success rate of door unlocking.

[0058] Figure 7 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 7 As shown, the electronic device may include: a processor 710, a communication interface 720, a memory 730 and a communication bus 740, wherein the processor 710, the communication interface 720 and the memory 730 communicate with each other through the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to execute the automobile collision unlocking method, which includes: when the power supply voltage of the whole vehicle recovers from below the normal working voltage value to the normal working voltage value, detecting the collision signal in the target memory; if the collision signal is detected, sending the door unlocking instruction to the body control module.

[0059] In addition, the logic instructions in the above-mentioned memory 730 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable 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 invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0060] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the car collision unlocking method provided by the above methods. The method includes: when the vehicle power supply voltage recovers from below the normal operating voltage value to the normal operating voltage value, detecting a collision signal in a target memory; if a collision signal is detected, sending a door unlocking command to a body control module.

[0061] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the vehicle collision unlocking method provided by the above-mentioned methods. The method includes: when the power supply voltage of the whole vehicle recovers from below the normal operating voltage value to the normal operating voltage value, detecting a collision signal in a target memory; if a collision signal is detected, sending a door unlocking instruction to a body control module.

[0062] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0063] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for unlocking a car by collision, characterized in that: include: When the power supply voltage of the vehicle recovers from below the normal operating voltage value to the normal operating voltage value, detecting the collision signal in the target memory; If a collision signal is detected, a door unlock command is sent to the body control module.

2. The vehicle collision unlocking method according to claim 1, characterized in that: The target memory is a storage capacitor.

3. The vehicle collision unlocking method according to claim 2, characterized in that: The target memory is a storage capacitor in a multimedia interactive system of a vehicle.

4. The vehicle collision unlocking method according to claim 1, characterized in that: The sending of the door unlocking instruction to the body control module includes: Sending a door unlock command to the body control module more than once.

5. The vehicle collision unlocking method according to claim 1, characterized in that: The method further comprises: A collision signal sent by the airbag controller is received and recorded in the target memory.

6. The vehicle collision unlocking method according to claim 5, characterized in that: After receiving the collision signal sent by the airbag controller, the method includes: Sending a door unlocking command to the body control module.

7. A car collision unlocking device, characterized in that: include: A detection module, the detection module is used to detect a collision signal in a target memory when the power supply voltage of the whole vehicle recovers from below a normal operating voltage value to a normal operating voltage value; The unlocking module is used to send a door unlocking instruction to the body control module if a collision signal is detected.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the automobile collision unlocking method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the vehicle collision unlocking method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the vehicle collision unlocking method according to any one of claims 1 to 6 is implemented.

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