Control method of steering column, electronic device and computer readable storage medium

Abstract

The application discloses a control method of a steering column, an electronic device and a computer readable storage medium, and comprises the following steps: in response to detecting that the steering column of a vehicle needs to be started, obtaining driver information, steering column state and driver seat information; determining the starting crushing force of the steering column according to the driver information and the steering column state; determining the starting time of the steering column and the post-starting crushing holding force according to the driver seat information; and controlling the steering column of the vehicle based on the starting crushing force, the starting time and the post-starting crushing holding force. In this way, the starting crushing force, the starting time and the post-starting crushing holding force of the steering column can be accurately controlled, and the safety of the passengers is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a steering column control method, electronic device, and computer-readable storage medium. Background Technology

[0002] In the process of developing passive safety for a vehicle, a crushable steering column is usually used to reduce the injury to the driver's head and chest during a frontal collision. The steering column works together with other passive safety restraint systems and takes effect when subjected to a frontal collision at a certain speed, which can improve the chances of occupant survival.

[0003] However, how to determine the starting crushing force, starting time, and post-start crushing holding force of the steering column to improve occupant safety has been under investigation. Summary of the Invention

[0004] The purpose of this application is to provide a steering column control method, electronic device, and computer-readable storage medium that can precisely control the starting crushing force, starting time, and post-start crushing holding force of the steering column, thereby improving occupant safety.

[0005] To achieve the above objectives:

[0006] In a first aspect, embodiments of this application provide a control method for a steering column, including:

[0007] In response to the detection that the steering column needs to be started, driver information, steering column status, and driver's seat information are obtained;

[0008] The starting crushing force of the steering column is determined based on the driver information and the steering column status;

[0009] The start-up time and crush holding force of the steering column after start-up are determined based on the driver's seat information;

[0010] The steering column of the vehicle is controlled based on the starting crushing force, the starting time, and the crushing holding force after starting.

[0011] Optionally, determining the starting crushing force of the steering column based on the driver information and the steering column state includes:

[0012] Based on the correspondence between different driver information and different basic starting crushing forces of the steering column, determine the target basic starting crushing force corresponding to the driver information;

[0013] The starting crushing force of the target foundation is adjusted based on the state of the steering column to determine the starting crushing force of the steering column.

[0014] Optionally, the driver information includes driver type and driver seatbelt wearing status; determining the target basic starting crush force corresponding to the driver information based on the correspondence between different driver information and different basic starting crush forces of the steering column includes:

[0015] Based on the correspondence between different driver types and different basic starting crushing forces of the steering column, determine the first basic starting crushing force corresponding to the driver type;

[0016] Based on the correspondence between different driver seat belt wearing states and different basic starting crushing forces of the steering column, a second basic starting crushing force corresponding to the driver seat belt wearing state is determined.

[0017] The maximum value between the first basic starting crushing force and the second basic starting crushing force is determined as the target basic starting crushing force of the steering column.

[0018] Optionally, adjusting the starting crushing force of the target foundation based on the state of the steering column to determine the starting crushing force of the steering column includes:

[0019] If the steering column is in a locked state, the sum of the target foundation starting crushing force and the first pressure threshold is taken as the starting crushing force of the steering column.

[0020] If the steering column is in the unlocked state, the difference between the target base starting crushing force and the second pressure threshold is taken as the starting crushing force of the steering column.

[0021] Optionally, the driver's seat information includes the driver's seat position; determining the start-up time and post-start crush holding force of the steering column based on the driver's seat information includes:

[0022] If the driver's seat position is forward relative to the preset position, the preset start time is advanced, and the advanced time is determined as the start time of the steering column; the preset start time is the start time corresponding to the driver's seat position at the preset position.

[0023] If the driver's seat position is further back than the preset position, the preset start time is delayed, and the delayed time is determined as the start time of the steering column.

[0024] Optionally, advancing the preset start time and determining the advanced time as the start time of the steering column includes:

[0025] A first duration is determined based on the distance between the driver's seat position and the preset position, and a first target time before the preset start time is determined as the start time of the steering column; the time interval between the first target time and the preset start time is the first duration;

[0026] The step of delaying the preset start time and determining the delayed time as the start time of the steering column includes:

[0027] The second duration is determined based on the distance between the driver's seat position and the preset position, and the second target time after the preset start time is determined as the start time of the steering column; the time interval between the second target time and the preset start time is the second duration.

[0028] Optionally, the driver's seat information includes the driver's seatbelt insertion status; determining the start-up time and post-start crushing holding force of the steering column based on the driver's seat information includes:

[0029] If the driver's seat belt is inserted into the buckle position, then the crush holding force of the steering column after startup is determined to be the third pressure threshold.

[0030] If the driver's seat belt is in the unbuckled state, then the crush holding force of the steering column after startup is determined to be the fourth pressure threshold; the fourth pressure threshold is less than the third pressure threshold.

[0031] Optionally, the method further includes:

[0032] Obtain the vehicle's driving information;

[0033] The driving information is calculated using a pre-established vehicle collision risk assessment model to obtain the collision risk assessment result; the vehicle collision risk assessment model is obtained by training on historical driving information and historical collision data of different vehicles.

[0034] When the collision risk assessment result indicates that the collision risk level is greater than or equal to the preset level, it is determined that the vehicle's steering column needs to be activated.

[0035] Secondly, embodiments of this application provide an electronic device, including: a processor and a memory storing a computer program, wherein when the processor runs the computer program, the above-described steering column control method is implemented.

[0036] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the aforementioned steering column control method.

[0037] The present application provides a steering column control method, apparatus, electronic device, and computer-readable storage medium. The method includes: in response to detecting a steering column requiring vehicle startup, acquiring driver information, steering column status, and driver's seat information; determining a startup crushing force of the steering column based on the driver information and steering column status; determining a startup time and post-start crushing holding force of the steering column based on the driver's seat information; and controlling the vehicle's steering column based on the startup crushing force, startup time, and post-start crushing holding force. Thus, by determining the startup crushing force, startup time, and post-start crushing holding force of the steering column using the acquired driver information, steering column status, and driver's seat information, precise control of these forces is possible, improving occupant safety. Attached Figure Description

[0038] Figure 1 A schematic flowchart illustrating the control method for the steering column provided in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the specific process of the control method for the steering column provided in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0043] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0044] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0045] It should be noted that step designations such as S101 and S102 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S102 first and then S101, etc., but these should all be within the protection scope of this application.

[0046] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0047] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0048] See Figure 1 This application provides a steering column control method, which can be executed by a steering column control device provided in this application. The steering column control device can be implemented using software and / or hardware, such as an electronic device like a vehicle terminal or vehicle controller. In this embodiment, the electronic device is used as the executing entity for the steering column control method. The steering column control method provided in this embodiment includes:

[0049] Step S101: In response to detecting that the steering column needs to be started, obtain driver information, steering column status and driver seat information.

[0050] The system can assess vehicle collision risk based on driving information and, when the risk is high, determine when to activate the steering column to protect occupants, including the driver. Driver information indicates the driver's type and / or status, including driver type and seatbelt wearing status. Driver type can indicate the driver's age, such as senior, middle-aged, or young. Seatbelt wearing status indicates whether the driver is wearing a seatbelt, including whether they are wearing one or not. Optionally, driver information can be manually entered by the user or obtained by capturing an image of the driver's face using in-vehicle image acquisition devices such as cameras and analyzing the captured image. Specific processes can refer to existing technologies.

[0051] The steering column status indicates the current state of the steering column, which can include locked and unlocked states. This can be obtained by monitoring the real-time status information of the steering column. The driver's seat information indicates the relative position of the driver's seat, specifically including the position of the driver's seat relative to a preset position, such as whether the driver's seat is forward or backward relative to the center position.

[0052] Step S102: Determine the starting crushing force of the steering column based on the driver information and the status of the steering column.

[0053] It is understandable that the steering column needs to be crushed to protect the driver, and the magnitude of the initial crushing force of the steering column affects the protection effect on the driver. Therefore, the initial crushing force of the steering column can be determined based on the driver information and the state of the steering column.

[0054] In one embodiment, determining the starting crush force of the steering column based on driver information and steering column status includes:

[0055] Based on the correspondence between different driver information and different basic starting crushing forces of the steering column, determine the target basic starting crushing force corresponding to the driver information;

[0056] The starting crushing force of the target foundation is adjusted based on the state of the steering column to determine the starting crushing force of the steering column.

[0057] The base starting crush force refers to the starting crush force matched with the driver information. Based on crush tests on different drivers, a correspondence between different driver information and different base starting crush forces of the steering column can be established according to the test results. After obtaining the current driver information of the vehicle, the target base starting crush force corresponding to the driver information can be determined by finding the correspondence between different driver information and different base starting crush forces of the steering column. Since the steering column condition also affects the starting crush force of the steering column, it is necessary to further adjust the target base starting crush force in conjunction with the steering column condition to determine the starting crush force of the steering column.

[0058] In one embodiment, driver information includes driver type and driver seatbelt wearing status; based on the correspondence between different driver information and different basic starting crush forces of the steering column, a target basic starting crush force corresponding to the driver information is determined, including:

[0059] Based on the correspondence between different driver types and different basic starting crushing forces of the steering column, determine the first basic starting crushing force corresponding to the driver type;

[0060] Based on the correspondence between different driver seat belt wearing states and different basic starting crushing forces of the steering column, determine the second basic starting crushing force corresponding to the driver seat belt wearing state;

[0061] The maximum value between the first and second basic starting crushing forces is determined as the target basic starting crushing force of the steering column.

[0062] The driver type can be used to characterize the driver's age, including elderly, middle-aged, and young. After obtaining the current driver type, the first basic starting crushing force corresponding to the driver type can be determined by finding the correspondence between different driver types and different basic starting crushing forces of the steering column. This first basic starting crushing force can be set according to the actual situation; for example, when the driver type is elderly, the corresponding first basic starting crushing force can be set to 120N; when the driver type is young, the corresponding first basic starting crushing force can be set to 100N, etc. Similarly, after obtaining the driver's seatbelt wearing status, the second basic starting crushing force corresponding to different driver seatbelt wearing statuses can be determined by finding the correspondence between different driver seatbelt wearing statuses and different basic starting crushing forces of the steering column. This second basic starting crushing force can also be set according to the actual situation; for example, when the driver's seatbelt is worn, the corresponding second basic starting crushing force can be set to 100N; when the driver's seatbelt is not worn, the corresponding second basic starting crushing force can be set to 150N, etc. To further improve occupant safety, the maximum value between the first and second basic starting crushing forces can be determined as the target basic starting crushing force for the steering column.

[0063] It should be noted that when the driver information only includes the driver type, the first basic starting crushing force can be determined as the target basic starting crushing force of the steering column; when the driver information only includes the driver's seatbelt wearing status, the second basic starting crushing force can be determined as the target basic starting crushing force of the steering column. Alternatively, the average of the first and second basic starting crushing forces can be used to determine the target basic starting crushing force of the steering column, etc.

[0064] In one embodiment, adjusting the starting crushing force of the target foundation based on the state of the steering column to determine the starting crushing force of the steering column includes:

[0065] If the steering column is in a locked state, the sum of the target foundation starting crushing force and the first pressure threshold is used as the starting crushing force of the steering column.

[0066] If the steering column is in the unlocked state, the difference between the target base starting crushing force and the second pressure threshold is used as the starting crushing force of the steering column.

[0067] Since the initial crushing force of the steering column is affected by its different states, which in turn affect the safety protection for occupants, the target basic crushing force can be adjusted based on the steering column's state after determining the target basic crushing force. It can be understood that during a vehicle collision, the initial velocity of the driver contacting the steering column is relatively high. At this point, a large absorption capacity (i.e., the initial crushing force) is needed to convert the driver's kinetic energy and reduce this initial velocity as quickly as possible. As the driver's body moves forward, to prevent excessive injury, the pressure on the body needs to be reduced, i.e., the absorption capacity needs to be decreased. Therefore, when the steering column is locked, the sum of the target basic crushing force and a first pressure threshold can be used as the initial crushing force of the steering column to provide a larger absorption capacity when the driver contacts the steering column. When the steering column is unlocked, the difference between the target basic crushing force and a second pressure threshold can be used as the initial crushing force of the steering column to provide a smaller absorption capacity when the driver contacts the steering column.

[0068] Step S103: Determine the start time of the steering column and the crush holding force after start based on the driver's seat information.

[0069] The steering column activation time refers to the time elapsed from determining when to activate the steering column to when it becomes effective (i.e., steering column activation), such as 1 second, 1.5 seconds, etc. The post-activation crushing holding force of the steering column refers to the crushing force corresponding to the steering column after it becomes effective.

[0070] In one embodiment, the driver's seat information includes the driver's seat position; determining the steering column activation timing and post-activation crush holding force based on the driver's seat information includes:

[0071] If the driver's seat position is forward relative to the preset position, the preset start time is advanced, and the advanced time is determined as the start time of the steering column; the preset start time is the start time corresponding to the driver's seat position when it is in the preset position.

[0072] If the driver's seat position is further back than the preset position, the preset start time will be delayed, and the delayed time will be determined as the start time of the steering column.

[0073] The preset position can be the middle position on a sliding rail in the vehicle. The driver's seat, mounted on the sliding rail, can slide to change its position. It's understood that when the driver's seat is forward relative to the preset position (closer to the steering wheel), the time required for the driver to touch the steering wheel in the event of a collision is shortened. Therefore, to ensure timely activation of the steering column to protect the driver, the preset activation time needs to be advanced, and this advanced time is determined as the steering column activation time. Conversely, when the driver's seat is rearward relative to the preset position (further away from the steering wheel), the time required for the driver to touch the steering wheel in the event of a collision is prolonged. Therefore, to avoid premature activation of the steering column and ineffective driver protection, the preset activation time needs to be delayed, and this delayed time is determined as the steering column activation time.

[0074] In one embodiment, advancing the preset start time and determining the advanced time as the start time of the steering column includes:

[0075] The first duration is determined based on the distance between the driver's seat position and the preset position, and the first target time before the preset start time is determined as the start time of the steering column; the time interval between the first target time and the preset start time is the first duration.

[0076] Specifically, when the driver's seat position is forward relative to a preset position, the first duration is determined based on the distance between the driver's seat position and the preset position. This can be determined by the distance between the driver's seat position and the preset position, and the duration corresponding to each unit distance. For example, assuming the unit distance is centimeters and each centimeter corresponds to 0.1 seconds, if the distance between the driver's seat position and the preset position is 5 centimeters, then the first duration can be determined as 0.5 seconds. After determining the first duration, based on the preset start time, the first target time before the preset start time can be determined as the steering column start time, and the time interval between the first target time and the preset start time is the first duration. Continuing with the example above, if the preset start time is 1.5 seconds and the first duration is 0.5 seconds, then the steering column start time can be determined as 1 second. It should be noted that in this embodiment, the first duration is determined based on the distance between the driver's seat position and the preset position. Alternatively, the first duration can be determined as the ratio of the distance between the driver's seat position and the preset position to a preset speed threshold. The preset speed threshold can be set according to actual needs, such as the current speed of the vehicle or the maximum drivable speed of the vehicle.

[0077] In one embodiment, delaying the preset start-up time and determining the delayed time as the start-up time of the steering column includes:

[0078] The second duration is determined based on the distance between the driver's seat position and the preset position, and the second target time after the preset start time is determined as the start time of the steering column; the time interval between the second target time and the preset start time is the second duration.

[0079] In this embodiment, when the driver's seat position is rearward relative to the preset position, the second duration is determined based on the distance between the driver's seat position and the preset position. This can be based on the distance between the driver's seat position and the preset position, and the duration corresponding to a unit distance. For example, assuming the unit distance is centimeters and the duration corresponding to each centimeter is 0.1 seconds, if the distance between the driver's seat position and the preset position is 3 centimeters, then the second duration can be determined to be 0.3 seconds. Continuing with the above example, if the preset start time is 1.5 seconds and the second duration is 0.3 seconds, then the start time of the steering column can be determined to be 1.8 seconds. It should be noted that in this embodiment, the second duration is determined based on the distance between the driver's seat position and the preset position. Alternatively, the second duration can be determined as the ratio of the distance between the driver's seat position and the preset position to a preset speed threshold. The preset speed threshold can be set according to actual needs, such as the vehicle's current speed or the vehicle's maximum drivable speed.

[0080] In one embodiment, the driver's seat information includes the driver's seatbelt status; determining the steering column activation timing and post-activation crush holding force based on the driver's seat information includes:

[0081] If the driver's seat belt is in the buckle-in state, then the crush holding force of the steering column after startup is determined to be the third pressure threshold.

[0082] If the driver's seat belt is not buckled, the crush holding force of the steering column after startup is determined to be the fourth pressure threshold; the fourth pressure threshold is less than the third pressure threshold.

[0083] The driver's seatbelt status includes both buckled and unbuckled states. Unbuckled means the driver's seatbelt is not inserted into the buckle. This means that when the driver's seatbelt is unbuckled, it cannot provide cushioning during a collision, causing the driver to accelerate rapidly towards the steering wheel. In this case, the steering column's initial crushing force is relatively large to absorb the impact. However, during the subsequent crush-hold phase, since most of the impact force has been absorbed by the initial crushing force, a relatively smaller crush-holding force is needed to protect the driver. When the driver's seatbelt is buckled, it provides cushioning during a collision. Compared to unbuckled, the driver accelerates more slowly towards the steering wheel, meaning the driver's speed may still be relatively high after striking the steering wheel. Therefore, a relatively larger crush-holding force is needed to protect the driver during this phase.

[0084] Step S104: Control the vehicle's steering column based on the starting crushing force, starting time, and crushing holding force after starting.

[0085] Specifically, a timer is started after the steering column of the vehicle that needs to be started is detected. When the timer reaches the start time of the steering column, the steering column of the vehicle is started based on the start crushing force. After the steering column of the vehicle is started, the crushing force of the steering column is controlled to be the crushing holding force after start, thereby realizing the control of the steering column of the vehicle based on the start crushing force, the start time, and the crushing holding force after start.

[0086] In summary, the steering column control method provided in the above embodiments determines the starting crush force, starting time, and post-start crush holding force of the steering column by acquiring driver information, steering column status, and driver's seat information. This allows for precise control of the starting crush force, starting time, and post-start crush holding force of the steering column, improving occupant safety. Furthermore, precise control of the crush force prevents irreversible damage to the entire system, allowing for recovery after minor collisions without damaging the steering system mechanism, thus reducing maintenance costs.

[0087] In one embodiment, the method further includes:

[0088] Obtain vehicle driving information;

[0089] The collision risk assessment results are obtained by calculating driving information using a pre-established vehicle collision risk assessment model. The vehicle collision risk assessment model is obtained by training on historical driving information and historical collision data of different vehicles.

[0090] When the collision risk assessment result indicates that the collision risk level is greater than or equal to the preset level, it is determined that the vehicle's steering column needs to be activated.

[0091] The driving information includes information related to vehicle movement, including but not limited to vehicle-specific information such as speed, acceleration, braking status, and steering angle; environmental information such as weather, road conditions (dry, slippery, icy, etc.), and lighting conditions; surrounding traffic conditions such as the location and speed of other vehicles and / or pedestrians; and occupant status such as seat position, seatbelt wearing status, steering column adjustment status, and occupant posture. The vehicle collision risk assessment model can be built using artificial intelligence algorithms such as decision tree algorithms and trained on historical driving information and historical collision data of different vehicles. The specific model training process can refer to existing technologies. Here, historical driving information can include data such as environmental and driving behavior characteristics at the time of the collision.

[0092] In constructing a vehicle collision risk assessment model, features helpful for determining collision risk can be extracted from the training data. Common features include: the relative distance and speed difference between the vehicle and the vehicle in front; the vehicle's acceleration and deceleration; whether turn signals are used; stopping distance; and proximity to intersections or complex road conditions. Simultaneously, feature transformations can be performed on these features, including discretizing certain continuous features to enhance accuracy. For example, speed can be categorized into "slow (0-25 kPH)," "medium (25-40 kPH)," and "fast (above 40 kPH)." Then, based on the processed features, a vehicle collision risk assessment model can be constructed using decision tree algorithms.

[0093] For different collision risk levels, corresponding protective measures can be set. For example, when the collision risk level is Level 1, the active safety system is activated, including automatic braking, emergency braking, and emergency steering. When the collision risk level is Level 2, the reversible restraint system is activated, including adaptive steering column activation, active seatbelt activation, and active backrest activation. When the collision risk level is Level 3, the irreversible system is activated, including engine drop, airbag deployment, and pre-tensioned seatbelt deployment. In this embodiment, the preset level can be set to Level 2, meaning that when the collision risk level is Level 2 or 3, it is determined that the vehicle's steering column needs to be activated. Furthermore, the model's performance can be monitored periodically, and the model can be updated using real-time data accumulation. For example, when a new accident occurs, corresponding data can be collected for model retraining. In practical applications, vehicle driving information can be obtained in real time, and collision risk assessment can be performed based on this information. Thus, by conducting a collision risk assessment of the vehicle, the need to activate the vehicle's steering column can be accurately determined based on the assessment results, further improving occupant safety.

[0094] Based on the same inventive concept as the foregoing embodiments, the above method will be described in detail below through a specific example.

[0095] See Figure 2 This is a schematic diagram of the specific flow of the steering column control method provided in this embodiment, including:

[0096] Step S201: Make a collision judgment based on the data collected by the active safety sensors.

[0097] Here, active safety sensors include lidar, visual radar, microwave radar, etc.

[0098] Step S202: When it is determined that a collision will occur, the collision risk level is predicted by using a preset vehicle collision risk assessment model.

[0099] Step S203: When it is determined that passive safety devices need to be activated based on the predicted collision risk level, obtain driver information, steering column status, and driver's seat information.

[0100] Among them, the steering column is a passive safety device.

[0101] Step S204: Determine the starting crushing force, starting time, and crushing holding force after starting based on driver information, steering column status, and driver's seat information.

[0102] Step S205: Based on the starting crushing force, starting time, and crushing holding force after starting, control the steering column to take effect.

[0103] Here, the process of controlling the steering column may include operations such as controlling the steering column unlocking solenoid valve to activate, unlocking the steering column crush stroke lock, and controlling the flow rate of the servo valve.

[0104] In summary, the steering column control method provided in the above embodiments allows for free control of the crush variable starting force, crush starting time, and crush holding force based on the collision intensity under different frontal collision intensity conditions, thereby protecting the safety of the occupants.

[0105] Based on the same inventive concept as the foregoing embodiments, this invention provides an electronic device, such as... Figure 3 As shown, the electronic device includes: a processor 310 and a memory 311 storing a computer program; wherein, Figure 3 The processor 310 shown in the diagram does not indicate that there is only one processor 310, but only indicates the positional relationship of the processor 310 relative to other devices. In practical applications, there can be one or more processors 310; similarly, Figure 3The memory 311 shown in the diagram has the same meaning, that is, it is only used to indicate the positional relationship of memory 311 relative to other devices. In practical applications, there can be one or more memories 311. When the processor 310 runs the computer program, it implements the control method of the steering column described above.

[0106] The electronic device may also include at least one network interface 312. The various components of the electronic device are coupled together via a bus system 313. It is understood that the bus system 313 is used to implement communication between these components. In addition to a data bus, the bus system 313 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 3 The general designated all buses as Bus System 313.

[0107] The memory 311 can be volatile memory or non-volatile memory, or both. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); the magnetic surface memory can be disk storage or magnetic tape storage. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 311 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0108] The memory 311 in this embodiment of the invention is used to store various types of data to support the operation of the electronic device. Examples of this data include: any computer programs used to operate on the electronic device, such as operating systems and applications; contact data; phonebook data; messages; pictures; videos, etc. The operating system includes various system programs, such as the framework layer, core library layer, driver layer, etc., used to implement various basic services and handle hardware-based tasks. Applications can include various applications, such as media players, browsers, etc., used to implement various application services. Here, the program implementing the method of this embodiment of the invention can be included in the application.

[0109] Based on the same inventive concept as the foregoing embodiments, this embodiment also provides a computer storage medium storing a computer program. The computer storage medium can be a magnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM), etc.; it can also be various devices including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc. When the computer program stored in the computer storage medium is executed by a processor, it implements the steering column control method described above. For the specific steps implemented when the computer program is executed by the processor, please refer to [link to relevant documentation]. Figure 1 The description of the illustrated embodiments will not be repeated here.

[0110] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] In this document, the terms “including,” “comprising,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0112] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for a steering column, characterized in that, include: In response to the detection that the steering column needs to be started, driver information, steering column status, and driver's seat information are obtained; The starting crushing force of the steering column is determined based on the driver information and the steering column status; The start-up time and crush holding force of the steering column after start-up are determined based on the driver's seat information; The steering column of the vehicle is controlled based on the starting crushing force, the starting time, and the crushing holding force after starting.

2. The method according to claim 1, characterized in that, Determining the starting crush force of the steering column based on the driver information and the steering column status includes: Based on the correspondence between different driver information and different basic starting crushing forces of the steering column, determine the target basic starting crushing force corresponding to the driver information; The starting crushing force of the target foundation is adjusted based on the state of the steering column to determine the starting crushing force of the steering column.

3. The method according to claim 2, characterized in that, The driver information includes driver type and driver seatbelt wearing status; determining the target basic starting crush force corresponding to the driver information based on the correspondence between different driver information and different basic starting crush forces of the steering column includes: Based on the correspondence between different driver types and different basic starting crushing forces of the steering column, determine the first basic starting crushing force corresponding to the driver type; Based on the correspondence between different driver seat belt wearing states and different basic starting crushing forces of the steering column, a second basic starting crushing force corresponding to the driver seat belt wearing state is determined. The maximum value between the first basic starting crushing force and the second basic starting crushing force is determined as the target basic starting crushing force of the steering column.

4. The method according to claim 2, characterized in that, The adjustment of the target foundation's initiation crushing force based on the steering column's condition, to determine the steering column's initiation crushing force, includes: If the steering column is in a locked state, the sum of the target foundation starting crushing force and the first pressure threshold is taken as the starting crushing force of the steering column. If the steering column is in the unlocked state, the difference between the target base starting crushing force and the second pressure threshold is taken as the starting crushing force of the steering column.

5. The method according to claim 1, characterized in that, The driver's seat information includes the driver's seat position; determining the start-up time and post-start crush holding force of the steering column based on the driver's seat information includes: If the driver's seat position is forward relative to the preset position, the preset start time is advanced, and the advanced time is determined as the start time of the steering column; the preset start time is the start time corresponding to the driver's seat position at the preset position. If the driver's seat position is further back than the preset position, the preset start time is delayed, and the delayed time is determined as the start time of the steering column.

6. The method according to claim 5, characterized in that, The step of advancing the preset start time and determining the advanced time as the start time of the steering column includes: A first duration is determined based on the distance between the driver's seat position and the preset position, and a first target time before the preset start time is determined as the start time of the steering column; the time interval between the first target time and the preset start time is the first duration; The step of delaying the preset start time and determining the delayed time as the start time of the steering column includes: The second duration is determined based on the distance between the driver's seat position and the preset position, and the second target time after the preset start time is determined as the start time of the steering column; the time interval between the second target time and the preset start time is the second duration.

7. The method according to claim 1, characterized in that, The driver's seat information includes the driver's seatbelt insertion status; determining the steering column activation time and post-activation crush holding force based on the driver's seat information includes: If the driver's seat belt is inserted into the buckle position, then the crush holding force of the steering column after startup is determined to be the third pressure threshold. If the driver's seat belt is in the unbuckled state, then the crush holding force of the steering column after startup is determined to be the fourth pressure threshold; the fourth pressure threshold is less than the third pressure threshold.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Obtain the vehicle's driving information; The driving information is calculated using a pre-established vehicle collision risk assessment model to obtain the collision risk assessment result; the vehicle collision risk assessment model is obtained by training on historical driving information and historical collision data of different vehicles. When the collision risk assessment result indicates that the collision risk level is greater than or equal to the preset level, it is determined that the vehicle's steering column needs to be activated.

9. An electronic device, characterized in that, include: A processor and a memory storing a computer program, wherein, when the processor runs the computer program, the control method of the steering column according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium, characterized in that, The system contains a computer program that, when executed by a processor, implements the control method for the steering column as described in any one of claims 1 to 8.

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