A method and apparatus for controlling a collision power module

Abstract

The present application relates to a kind of collision power module control method, comprising: receiving collision warning signal;In response to the collision warning signal, enter alert state, and precharge is carried out to drive lock capacitor;Collision occurrence signal is received;In response to the collision occurrence signal, control the drive lock capacitor is discharged to vehicle door lock to drive vehicle door unlocking, collision power module is precharged to drive lock capacitor by receiving collision warning signal from intelligent driving domain controller, to ensure that collision power module can directly utilize the drive lock capacitor that has been precharged to discharge vehicle door lock after receiving collision occurrence signal, collision power module is changed from passive response to active preparation, to eliminate the security risk that vehicle door unlocking fails due to the insufficient electric quantity of drive lock capacitor, and the functional safety level of collision power module is promoted to the highest level.

Description

Technical Field

[0001] This invention relates to the field of automotive safety technology, and in particular to a method and device for controlling a collision power module. Background Technology

[0002] With the gradual development of new energy vehicles, their safe unlocking in the event of a collision has attracted much attention. As a key module for safe unlocking of automobiles, the collision power module can supply power to the door locks to unlock the doors when a collision occurs.

[0003] However, current collision power modules suffer from drawbacks such as passive response and high failure risk. Specifically, current collision power modules are triggered by a hard-wired signal from the airbag controller (ACU) after a collision, placing them in a reactive mode. Furthermore, because automotive systems may remain idle for extended periods or experience minor electrical leakage, when the collision power module receives a collision signal and needs to discharge, the internal locking capacitor may not have sufficient charge to unlock the vehicle's door locks.

[0004] Therefore, there is an urgent need for a control method for collision power modules that can at least partially solve the problem of passive reaction and high failure risk of collision power modules. Summary of the Invention

[0005] This disclosure provides a collision power module control method and apparatus to at least partially solve the problem of passive reaction and high failure risk of collision power modules.

[0006] The specific technical solutions provided in this disclosure are as follows:

[0007] In a first aspect, this disclosure proposes a collision power supply module control method, including: Receive collision warning signals; In response to the collision warning signal, the system enters a state of alert and precharges the locking capacitor. Receive collision signal; In response to the collision signal, the locking capacitor is controlled to discharge to the door lock to drive the door to unlock.

[0008] Optionally, after entering the alert state, the system further includes: The collision power module is self-tested, which includes: acquiring the working status of the drive circuit, sensor and communication link, and determining whether the collision power module is working properly based on the working status.

[0009] Optionally, acquiring the operating status of the drive circuit, sensor, and communication link includes: Acquire the voltage and current of the drive circuit, the output signal of the sensor, and the communication status of the communication link; The step of determining whether the collision power supply module is working properly based on the working status includes: When the voltage and current of the driving circuit are both within the preset range, the output signal of the sensor is valid, and the communication status of the communication link is normal, it is determined that the collision power supply module is working normally. The driving circuit includes a lock-up capacitor.

[0010] Optionally, the step of entering a state of alert in response to the collision warning signal includes: In response to the collision warning signal, acquire vehicle data information; Pre-collision diagnostic fault codes are generated and stored based on the vehicle's data information.

[0011] Optionally, the step of acquiring vehicle data information in response to the collision warning signal includes: Obtain at least one of the following: vehicle speed, vehicle braking status, drive lock capacitor voltage, and drive lock capacitor current.

[0012] Optionally, after entering the alert state, the system further includes: Receive collision warning cancellation signal; In response to the collision warning cancellation signal, the collision power module is controlled to exit the alert state.

[0013] Optionally, the step of entering a state of alert in response to the collision warning signal further includes: In response to the collision warning signal, the timer begins; The receiving of the collision occurrence signal includes: When the timer duration exceeds the preset time, the alert state will be exited.

[0014] Optionally, exiting the alert state includes: This causes the latching capacitor to discharge, or maintains the current charge level of the latching capacitor.

[0015] Secondly, this disclosure also proposes a collision power module control device, comprising: The first receiving module is used to receive collision warning signals; The first control module is used to respond to the collision warning signal, control the collision power module to enter the alert state, and precharge the drive lock capacitor. The second receiving module is used to receive the collision signal; The second control module is used to control the lock capacitor to discharge to the door lock in response to the collision signal, so as to drive the door to unlock.

[0016] Optionally, the collision power module control device further includes: The first acquisition module is used to acquire the working status of the drive circuit, sensor and communication link; The first judgment module is used to determine whether the collision power supply module is working properly based on the working status. The first timing module is used to start timing in response to the collision warning signal; The third control module is used to exit the alert state when the timing duration exceeds the preset time.

[0017] Thirdly, the present invention provides an electronic device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the collision power module control method of the first aspect or any corresponding embodiment described above.

[0018] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the collision power module control method of the first aspect or any corresponding embodiment thereof.

[0019] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the collision power module control method of the first aspect or any corresponding embodiment described above.

[0020] The beneficial effects of this disclosure are as follows: The collision power module pre-charges the locking capacitor by receiving a collision warning signal from the intelligent driving domain controller. This ensures that upon receiving a collision signal, the module can directly discharge the door locks using the pre-charged capacitor. The collision power module shifts from a passive response to an active preparation, eliminating the safety hazard of door unlocking failure due to insufficient capacitor charge and elevating its functional safety level to the highest level. Furthermore, since the collision power module is already in alert mode upon receiving a collision signal, it does not need to determine whether it is a false alarm, effectively shortening its response time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic flowchart of a collision power supply module control method provided in an embodiment of this disclosure; Figure 2 A timing diagram of a collision power supply module control method provided in an embodiment of this disclosure; Figure 3 This is a structural block diagram of a collision power supply module control device provided in an embodiment of the present disclosure; Figure 4 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present disclosure.

[0023] Figure label: 100, First receiving module; 200, First control module; 300, Second receiving module; 400, Second control module. Detailed Implementation

[0024] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict.

[0025] Please see Figure 1 This embodiment provides a control method for a collision power supply module, including: Step S100: Receive collision warning signal; Step S200: In response to the collision warning signal, enter the alert state and precharge the drive lock capacitor; Step S300: Receive a collision signal; Step S400: In response to a collision signal, control the lock capacitor to discharge to the door lock to unlock the door.

[0026] The Crash Power Module (CPM) contains a drive circuit, including a lock-up capacitor. This capacitor acts as a backup power source, supplying power to the door locks in the event of a main vehicle power failure (e.g., a power outage caused by a collision), thereby unlocking the doors and ensuring timely escape for occupants. Furthermore, the CPM also includes a microcontroller, non-volatile memory, and a communication interface, through which it communicates with the intelligent driving domain controller.

[0027] In step S100, the collision warning signal can be sent from the intelligent driving domain controller to the collision power module. Specifically, the intelligent driving domain controller can acquire target data information around the vehicle and vehicle data information, and run a collision prediction algorithm based on the target data information and vehicle data information to determine whether to generate a collision warning signal. The target data information around the vehicle can be received by environmental perception sensors, including millimeter-wave radar, lidar, and cameras. The collision prediction algorithm can calculate the estimated collision time and probability of collision between the vehicle and surrounding targets in real time, and generate a collision warning signal when it determines that a collision is unavoidable or the probability of collision is greater than the collision warning threshold. For example, when the estimated collision time is less than 300ms, it is considered that a collision is unavoidable, and a collision warning signal is generated. No specific limit is set for the collision warning threshold here; it can be adjusted according to actual conditions.

[0028] Please see Figure 2 An external communication link is established between the intelligent driving domain controller and the collision power module. For example, this external communication link can be a dual channel combining a CAN FD bus and a dedicated hardwired line. The dedicated hardwired line is the highest priority, lowest latency communication trigger channel, while the CAN FD bus can transmit various information such as warning level, estimated collision time, and collision type. The intelligent driving domain controller sends collision warning signals to the collision power module via this external communication link. Specifically, the microcontroller of the collision power module continuously monitors the dedicated hardwired line and the CAN FD bus to receive the collision warning signals.

[0029] In step S200, the collision power module enters a warning state in response to a collision warning signal issued by the intelligent driving domain controller. In the warning state, the locking capacitor is pre-charged. Specifically, the collision power module can rapidly charge the locking capacitor with the maximum safe current.

[0030] In step S300, the collision signal can be sent from the airbag controller to the collision power module. Specifically, the airbag controller sends the collision signal to the collision power module via an external communication link.

[0031] In step S400, the collision power module responds to the collision signal issued by the airbag controller. At this time, since the collision power module has entered the alert state and the lock-driving capacitor has been pre-charged, the lock-driving capacitor can directly discharge to the door lock to drive the door to unlock.

[0032] In this embodiment, the collision power module pre-charges the locking capacitor by receiving a collision warning signal from the intelligent driving domain controller. This ensures that upon receiving a collision signal, the collision power module can directly discharge the door lock using the pre-charged locking capacitor. The collision power module shifts from a passive response to an active preparation, eliminating the safety hazard of door unlocking failure due to insufficient locking capacitor charge and elevating the functional safety level of the collision power module to the highest level. Simultaneously, since the collision power module is already in alert mode upon receiving a collision signal, it does not need to determine whether it is a false alarm, effectively shortening the response time of the collision power module.

[0033] Furthermore, this embodiment deeply couples the environmental perception and prediction capabilities of the intelligent driving domain control with the execution reliability of the collision power module, using information advantages to compensate for the time disadvantage of hardware response, realizing optimized collaboration of cross-domain safety resources, and pioneering a new path for the integration of vehicle active safety and passive safety.

[0034] In some embodiments, after step S200, the method further includes: Step S210: Perform a self-test on the collision power module. The self-test includes: acquiring the working status of the drive circuit, sensors and communication links, and determining whether the collision power module is working properly based on the working status.

[0035] As an example, step S210 includes: Step S211: Obtain the voltage and current of the drive circuit, the output signal of the sensor, and the communication status of the communication link; Step S212: When the voltage and current of the drive circuit are both within the preset range, the output signal of the sensor is valid, and the communication status of the communication link is normal, it is determined that the collision power supply module is working normally. The drive circuit includes a lock-up capacitor.

[0036] The drive circuit within the collision power module includes a locking capacitor, which typically comprises multiple supercapacitors. Additionally, the collision power module includes a locking motor, powered by the locking capacitor. The locking motor directly controls the door locks to unlock.

[0037] In step S212, no specific limitation is imposed on the preset range; the preset range can be set and adjusted according to the drive circuit. The sensor is an internal sensor of the collision power module, which is different from the environmental perception sensor mentioned above. The communication link is also an internal communication link of the collision power module, which is different from the external communication link mentioned above.

[0038] When the collision power module is not operating normally, which can be understood as including: the voltage or current of the drive circuit is not within the preset range, or the output signal of the sensor is invalid, or the communication status of the communication link is abnormal, the collision power module will issue a warning to the driver inside the vehicle.

[0039] In this embodiment, after the collision power module enters a state of alert in response to the collision warning signal, it will also perform a self-test. Specifically, this includes checking whether the voltage and current of the drive circuit are within the preset range, whether the output signal of the sensor is valid, and whether the communication status of the communication link is normal. This ensures that when a collision signal is received, it can respond in a timely manner and unlock the door locks to ensure the safety of the occupants.

[0040] In some embodiments, step S200 includes: Step S221: In response to the collision warning signal, obtain the vehicle's data information; Step S222: Generate and store pre-collision diagnostic fault codes based on the vehicle data information.

[0041] As an example, step S221 includes: Step S221a: Obtain at least one of the following: vehicle speed, vehicle braking status, drive lock capacitor voltage, and drive lock capacitor current.

[0042] Upon receiving a collision warning signal, the collision power module acquires vehicle data, which may include one or more of the following: vehicle speed, braking status, locking capacitor voltage, and locking capacitor current. Based on this data, the collision power module generates a pre-collision diagnostic fault code and stores it in non-volatile memory. Specifically, the collision power module packages one or more of the following data—vehicle speed, braking status, locking capacitor voltage, and locking capacitor current—along with the current timestamp and the collision warning signal, to form a dedicated pre-collision diagnostic fault code for storage. Simultaneously, the vehicle's in-vehicle diagnostic system generates a specific indicator code to identify the presence of the pre-collision diagnostic fault code.

[0043] In this embodiment, the collision power module, upon entering a warning state in response to a collision warning signal, acquires and stores various vehicle data, including vehicle speed, vehicle braking status, lock capacitor voltage, and drive capacitor current. This systematically stores the vehicle's state before a collision, forming a function similar to a black box. This improves the robustness and diagnosability of the vehicle system, thereby providing multi-dimensional data support for subsequent vehicle fault analysis, accident liability determination, and safety algorithm optimization.

[0044] In some embodiments, after step S200, the method further includes: Step S231: Receive the collision warning cancellation signal; Step S232: Respond to the collision warning cancellation signal and control the collision power module to exit the alert state.

[0045] In step S231, the collision warning cancellation signal can be sent from the intelligent driving domain controller to the collision power module. Specifically, after the intelligent driving domain controller sends out the collision warning signal, it can continuously acquire target data information around the vehicle and vehicle data information, and determine whether a collision has occurred based on the target data information around the vehicle and vehicle data information. When a collision has not occurred (e.g., the obstacle has moved away or the vehicle has successfully avoided the collision), a collision warning cancellation signal is generated and sent to the collision power module through an external communication link.

[0046] In step S232, the collision power module exits the alert state in response to the collision warning cancellation signal. Specifically, after receiving the collision warning cancellation signal, the collision power module performs safety monitoring for a period of time, for example, the duration of safety monitoring can be 2000ms, and then exits the alert state.

[0047] In some embodiments, step S200 further includes: Step S240: In response to the collision warning signal, start timing; Step S300 includes: Step S310: When the timer duration exceeds the preset time, exit the alert state.

[0048] In step S240, the collision power module starts timing when it receives a collision warning signal.

[0049] In step S310, if the collision power module does not receive a collision signal from the airbag controller within a preset time, the collision power module will determine that the collision warning has timed out and thus exit the alert state. For example, the preset time can be 2000ms.

[0050] In some embodiments, step S232 or step S310 includes: Step S311 discharges the latching capacitor or maintains the current charge of the latching capacitor.

[0051] When the collision power module exits the alert state, the locking capacitor can be discharged to power other safety diagnostic modules of the vehicle, or the locking capacitor can be kept at its current charge to prepare for responding to the next collision warning signal.

[0052] Please see Figure 3 This embodiment provides a collision power module control device, including: The first receiving module 100 is used to receive collision warning signals; The first control module 200 is used to respond to the collision warning signal, control the collision power module to enter the alarm state, and precharge the drive lock capacitor. The second receiving module 300 is used to receive the collision signal; The second control module 400 is used to control the drive lock capacitor to discharge to the door lock in response to a collision signal, thereby driving the door to unlock.

[0053] In some embodiments, the collision power module control device further includes: The first acquisition module is used to acquire the working status of the drive circuit, sensor, and communication link; The first judgment module is used to determine whether the collision power supply module is working properly based on its working status. The first timing module is used to start timing in response to a collision warning signal; The third control module is used to exit the alert state when the timing duration exceeds the preset time.

[0054] As an example, the drive circuit includes a latching capacitor, and the first acquisition module includes: The first acquisition unit is used to acquire the voltage of the driving circuit; The second acquisition unit is used to acquire the current of the driving circuit; The third acquisition unit is used to acquire the output signal of the sensor; The fourth acquisition unit is used to acquire the communication status of the communication link; The first judgment module includes: The first judgment unit is used to determine that the collision power supply module is working normally when the voltage and current of the drive circuit are within the preset range, the output signal of the sensor is valid, and the communication status of the communication link is normal.

[0055] In some embodiments, the first control module 200 includes: The first acquisition submodule is used to acquire vehicle data information in response to a collision warning signal; The first generation submodule is used to generate and store pre-collision diagnostic fault codes based on the vehicle's data information.

[0056] As an example, the first acquisition submodule includes: The first acquisition subunit is used to acquire at least one of the following: vehicle speed, vehicle braking status, drive lock capacitor voltage, and drive lock capacitor current.

[0057] In some embodiments, the collision power module control device further includes: The third receiving module is used to receive the collision warning cancellation signal; The fourth control module is used to control the collision power module to exit the alert state in response to the collision warning cancellation signal.

[0058] In some embodiments, the third control module and / or the fourth control module include: The fifth control module is used to discharge the lock-up capacitor or maintain the current charge of the lock-up capacitor.

[0059] The collision power module control device provided in this embodiment of the invention can execute the collision power module control method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method. Further functional descriptions of the various modules and units described above are the same as in the corresponding embodiments described above, and will not be repeated here.

[0060] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0061] The following is a detailed reference. Figure 4 The diagram illustrates a structural schematic suitable for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processing unit, etc.) 501, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 502 or a program loaded from memory 508 into random access memory (RAM) 503. The RAM 503 also stores various programs and data required for the operation of the electronic device. The processor 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0062] Typically, the following devices can be connected to I / O interface 505: input devices 506 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 507 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 508 including, for example, magnetic tapes, hard disks, etc.; and communication devices 509. Communication device 509 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 4 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0063] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 509, or installed from a memory 508, or installed from a ROM 502. When the computer program is executed by the processor 501, it performs the functions defined in the collision power module control method of the embodiments of the present invention.

[0064] Figure 4 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0065] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the collision power module control method shown in the above embodiments is implemented.

[0066] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0067] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0068] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A collision power supply module control method, characterized in that, include: Receive collision warning signals; In response to the collision warning signal, the system enters a state of alert and precharges the locking capacitor. Receive collision signal; In response to the collision signal, the locking capacitor is controlled to discharge to the door lock to drive the door to unlock.

2. The collision power supply module control method according to claim 1, characterized in that, After entering the alert state, it also includes: The collision power module is self-tested, which includes: acquiring the working status of the drive circuit, sensor and communication link, and determining whether the collision power module is working properly based on the working status.

3. The collision power supply module control method according to claim 2, characterized in that, The acquisition of the operating status of the driving circuit, sensor, and communication link includes: Acquire the voltage and current of the drive circuit, the output signal of the sensor, and the communication status of the communication link; The step of determining whether the collision power supply module is working properly based on the working status includes: When the voltage and current of the driving circuit are both within the preset range, the output signal of the sensor is valid, and the communication status of the communication link is normal, it is determined that the collision power supply module is working normally. The driving circuit includes a lock-up capacitor.

4. The collision power supply module control method according to claim 1, characterized in that, The response to the collision warning signal, entering a state of alert, includes: In response to the collision warning signal, acquire vehicle data information; Pre-collision diagnostic fault codes are generated and stored based on the vehicle's data information.

5. The collision power supply module control method according to claim 4, characterized in that, The process of acquiring vehicle data information in response to the collision warning signal includes: Obtain at least one of the following: vehicle speed, vehicle braking status, drive lock capacitor voltage, and drive lock capacitor current.

6. The collision power supply module control method according to claim 1, characterized in that, After entering the alert state, it also includes: Receive collision warning cancellation signal; In response to the collision warning cancellation signal, the collision power module is controlled to exit the alert state.

7. The collision power supply module control method according to claim 1, characterized in that, The step of entering a state of alert in response to the collision warning signal further includes: In response to the collision warning signal, the timer begins; The receiving of the collision occurrence signal includes: When the timer duration exceeds the preset time, the alert state will be exited.

8. The collision power supply module control method according to claim 6 or 7, characterized in that, Exiting alert status includes: This causes the latching capacitor to discharge, or maintains the current charge level of the latching capacitor.

9. A collision power supply module control device, characterized in that, include: The first receiving module is used to receive collision warning signals; The first control module is used to respond to the collision warning signal, control the collision power module to enter the alert state, and precharge the drive lock capacitor. The second receiving module is used to receive the collision signal; The second control module is used to control the lock capacitor to discharge to the door lock in response to the collision signal, so as to drive the door to unlock.

10. The collision power supply module control device according to claim 9, characterized in that, Also includes: The first acquisition module is used to acquire the working status of the drive circuit, sensor and communication link; The first judgment module is used to determine whether the collision power supply module is working properly based on the working status. The first timing module is used to start timing in response to the collision warning signal; The third control module is used to exit the alert state when the timing duration exceeds the preset time.

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