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

Abstract

The invention discloses a steering column control method, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining driver information, a steering column state and driving seat information in response to the detection of a steering column of a vehicle needing to be started; determining the starting crushing force of the steering column according to the driver information and the state of the steering column; determining the starting time of the steering column and the crushing retention force after starting according to the driving seat information; and controlling a steering column of the vehicle based on the starting crushing force, the starting time and the crushing retention force after starting. In this way, the starting crushing force, the starting time and the crushing retention force after starting of the steering column can be accurately controlled, and the safety of passengers is improved.

Description

Technical Field

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

[0002] During the passive safety development process of the entire vehicle, a crushing steering column is usually used to reduce the damage to the driver's head and chest in a head-on collision. The steering column works together with other passive safety restraint systems and takes effect when subjected to a head-on collision at a certain speed, which can increase the possibility of occupant survival.

[0003] However, how to determine the starting crushing force, starting time and crushing holding force after starting of the steering column to improve the safety of the occupants has been under research. Summary of the invention

[0004] The purpose of the present application is to provide a steering column control method, an electronic device and a computer-readable storage medium, which can accurately control the starting crushing force, starting time and crushing holding force after starting of the steering column, thereby improving the safety of the passengers.

[0005] To achieve the above objectives:

[0006] In a first aspect, an embodiment of the present application provides a method for controlling a steering column, comprising:

[0007] In response to detecting that a steering column of the vehicle needs to be started, obtaining driver information, steering column status, and driver seat information;

[0008] Determining a starting crushing force of the steering column according to the driver information and the state of the steering column;

[0009] Determining the activation time and the crushing holding force after activation of the steering column according to the driver seat information;

[0010] A steering column of the vehicle is controlled based on the startup crushing force, the startup timing, and the post-startup crushing holding force.

[0011] Optionally, determining the starting crushing force of the steering column according to the driver information and the state of the steering column comprises:

[0012] Determining a target basic starting crushing force corresponding to the driver information according to a correspondence between different driver information and different basic starting crushing forces of the steering column;

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

[0014] Optionally, the driver information includes the driver type and the driver's seat belt wearing status; and determining the target basic starting crushing force corresponding to the driver information according to the correspondence between different driver information and different basic starting crushing forces of the steering column includes:

[0015] Determining a first basic starting crushing force corresponding to the driver type according to a correspondence between different driver types and different basic starting crushing forces of the steering column;

[0016] Determining a second basic starting crushing force corresponding to the driver's seat belt wearing state according to a corresponding relationship between different driver's seat belt wearing states and different basic starting crushing forces of the steering column;

[0017] The maximum value of 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 target basic starting crushing force based on the state of the steering column to determine the starting crushing force of the steering column includes:

[0019] If the state of the steering column is a locked state, the sum of the target basic starting crushing force and the first pressure threshold is used as the starting crushing force of the steering column;

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

[0021] Optionally, the driving seat information includes a driving seat position; and determining the start-up time and the crush holding force after start-up of the steering column according to the driving seat information includes:

[0022] If the position of the driver's seat 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 position of the driver's seat at the preset position;

[0023] If the position of the driver's seat is rearward relative to 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, the step of advancing the preset start time and determining the advanced time as the start time of the steering column includes:

[0025] Determine a first duration according to the distance between the driver's seat position and the preset position, and determine a first target moment before the preset start moment as the start moment of the steering column; the time interval between the first target moment and the preset start moment 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 according to the distance between the driving seat position and the preset position, and the second target moment after the preset start moment is determined as the start moment of the steering column; the time interval between the second target moment and the preset start moment is the second duration.

[0028] Optionally, the driver seat information includes a driver seat belt insertion state; and determining the start-up time and the crush holding force after start-up of the steering column according to the driver seat information includes:

[0029] If the driver's seat belt is in the buckle-inserted state, determining that the post-startup crushing holding force of the steering column is a third pressure threshold;

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

[0031] Optionally, the method further comprises:

[0032] Acquiring driving information of the vehicle;

[0033] The driving information is calculated using a pre-established vehicle collision risk assessment model to obtain a 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 is that the collision risk level is greater than or equal to a preset level, it is determined that the steering column of the vehicle needs to be activated.

[0035] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory storing a computer program, wherein when the processor runs the computer program, the above-mentioned steering column control method is implemented.

[0036] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned steering column control method is implemented.

[0037] The control method, device, electronic device and computer-readable storage medium of the steering column provided by the embodiment of the present application include: in response to detecting that the steering column of the vehicle needs to be started, obtaining the driver information, the state of the steering column and the driver's seat information; determining the starting crushing force of the steering column according to the driver information and the state of the steering column; determining the starting moment and the crushing holding force after starting of the steering column according to the driver's seat information; and controlling the steering column of the vehicle based on the starting crushing force, the starting moment and the crushing holding force after starting. In this way, by obtaining the driver information, the state of the steering column and the driver's seat information, the starting crushing force, the starting moment and the crushing holding force after starting of the steering column are determined, and the starting crushing force, the starting moment and the crushing holding force after starting of the steering column can be accurately controlled, thereby improving the safety of the occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic flow chart of a method for controlling a steering column provided by an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of a specific flow chart of a method for controlling a steering column provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0043] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of..." or "when..." or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising", "including" indicate that there are described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, “A, B, or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition will occur only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some manner.

[0044] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0045] It should be noted that, in this article, step codes such as S101, S102, etc. are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence. When implementing the step, those skilled in the art may execute S102 first and then S101, etc., but these should all be within the scope of protection of this application.

[0046] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0048] See also Figure 1 , is a steering column control method provided in an embodiment of the present application. The steering column control method can be executed by a steering column control device provided in an embodiment of the present application. The steering column control device can be implemented in software and / or hardware, such as an electronic device such as a vehicle-mounted terminal or a vehicle-mounted controller. In this embodiment, the execution subject of the steering column control method is an electronic device as an example. The steering column control method provided in this embodiment includes:

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

[0050] Among them, the risk of vehicle collision can be judged according to the driving information of the vehicle, and when the risk of vehicle collision is high, it is determined that the steering column of the vehicle needs to be activated to protect the passengers including the driver. Among them, the driver information is used to indicate the type and / or status of the driver, and may include the driver type and the driver's seat belt wearing status. The driver type can be used to indicate the age type of the driver, including the elderly, middle-aged people, young people, etc. classified by age. The driver's seat belt wearing status can be used to indicate whether the driver is wearing a seat belt, including whether the seat belt is worn or not. Optionally, the driver information can be manually input by the user, or it can be obtained by capturing an image of the driver's front face through an image capture device such as a camera set in the vehicle, and the corresponding driver information is obtained by analyzing the captured image. The specific process can refer to the existing technology.

[0051] The steering column status is used to indicate the current status of the steering column, which may include a locked state and an unlocked state, which may be obtained by monitoring the real-time status information of the steering column. The driver's seat information is used to indicate the relative position of the driver's seat, which may include the position of the driver's seat relative to the preset position, such as whether the driver's seat is forward or backward relative to the middle position.

[0052] Step S102: Determine the starting crushing force of the steering column according to the driver information and the state of the steering column.

[0053] It can be understood that since the steering column needs to be crushed to protect the driver, and the starting crushing force of the steering column affects the protection effect on the driver, the starting 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 crushing force of the steering column according to the driver information and the state of the steering column includes:

[0055] Determining a target basic starting crushing force corresponding to the driver information according to a corresponding relationship between different driver information and different basic starting crushing forces of the steering column;

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

[0057] Among them, the basic starting crushing force refers to the starting crushing force that matches the driver information. Based on the crushing test of different drivers, the correspondence between different driver information and different basic starting crushing forces of the steering column can be established according to the test results. After obtaining the current driver information of the vehicle, the target basic starting crushing force corresponding to the driver information can be determined by finding the correspondence between different driver information and different basic starting crushing forces of the steering column. Since the state of the steering column will also affect the starting crushing force of the steering column, it is necessary to further adjust the target basic starting crushing force in combination with the state of the steering column to determine the starting crushing force of the steering column.

[0058] In one embodiment, the driver information includes the driver type and the driver's seat belt wearing status; and according to the correspondence between different driver information and different basic starting crushing forces of the steering column, determining the target basic starting crushing force corresponding to the driver information includes:

[0059] Determining a first basic starting crushing force corresponding to the driver type according to a corresponding relationship between different driver types and different basic starting crushing forces of the steering column;

[0060] According to the corresponding relationship between different driver's seat belt wearing states and different basic starting crushing forces of the steering column, a second basic starting crushing force corresponding to the driver's seat belt wearing state is determined;

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

[0062] Among them, the driver type can be used to characterize the age type of the driver, including the elderly, middle-aged people, young people, etc. After obtaining the current driver type of the vehicle, the first basic starting crushing force corresponding to the driver type can be determined by finding the corresponding relationship between different driver types and different basic starting crushing forces of the steering column. Here, the first basic starting crushing force can be set according to the actual situation. For example, when the driver type is an elderly person, the corresponding first basic starting crushing force can be set to 120N; when the driver type is a young person, the corresponding first basic starting crushing force can be set to 100N, etc. At the same time, after obtaining the driver's seat belt wearing state, the second basic starting crushing force corresponding to the driver's seat belt wearing state can be determined by finding the corresponding relationship between different driver's seat belt wearing states and different basic starting crushing forces of the steering column. Here, the second basic starting crushing force can be set according to the actual situation. For example, when the driver's seat belt wearing state is wearing a seat belt, the corresponding second basic starting crushing force can be set to 100N; when the driver's seat belt wearing state is not wearing a seat belt, the corresponding second basic starting crushing force can be set to 150N, etc. In order to further improve the safety of the occupants, the maximum value of the first basic starting crushing force and the second basic starting crushing force can be determined as the target basic starting crushing force of 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 seat belt wearing status, the second basic starting crushing force can be determined as the target basic starting crushing force of the steering column. In addition, the average of the first basic starting crushing force and the second basic starting crushing force can also be determined as the target basic starting crushing force of the steering column.

[0064] In one embodiment, adjusting the target basic starting crushing force 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 basic 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 basic starting crushing force and the second pressure threshold is used as the starting crushing force of the steering column.

[0067] Among them, since the starting crushing force of the steering column will be affected when the steering column state is different, and thus the protection effect on the safety of the occupants will also be affected, therefore, after determining the target basic starting crushing force, the target basic starting crushing force can also be adjusted based on the steering column state to determine the starting crushing force of the steering column. It can be understood that during the collision of the vehicle, the initial velocity of the driver contacting the steering column will be relatively large, and at this time, a larger absorption capacity (i.e., starting crushing force) will be required to convert the kinetic energy of the human body to reduce the initial velocity as soon as possible. As the driver's body moves forward, in order to prevent the driver from being injured too much, it is necessary to reduce the pressure on the body, i.e., reduce the absorption capacity. Therefore, when the steering column state is a locked state, the sum of the target basic starting crushing force and the first pressure threshold can be used as the starting crushing force of the steering column, so as to provide a larger absorption capacity when the driver contacts the steering column as much as possible. When the steering column state is an unlocked state, the difference between the target basic starting crushing force and the second pressure threshold is used as the starting crushing force of the steering column, so as to provide a smaller absorption capacity after the driver contacts the steering column.

[0068] Step S103: Determine the activation time of the steering column and the crush holding force after activation according to the driver's seat information.

[0069] The start time of the steering column refers to the time from when the steering column needs to be started to when the steering column takes effect (i.e., the steering column starts), such as 1 second, 1.5 seconds, etc. The post-start crushing holding force of the steering column refers to the corresponding crushing force after the steering column takes effect.

[0070] In one embodiment, the driver seat information includes the driver seat position; determining the activation time and the post-activation crush holding force of the steering column according to the driver seat information includes:

[0071] If the position of the driver's seat 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 position of the driver's seat at the preset position;

[0072] If the position of the driver's seat is rearward relative to the preset position, the preset start time is delayed, and the delayed time is determined as the start time of the steering column.

[0073] The preset position may be a middle position on a sliding guide rail in the vehicle, and a driver's seat mounted on the sliding guide rail may slide on the middle position to change the position of the driver's seat. It is understood that when the driver's seat is positioned forward relative to the preset position, that is, the driver's seat is closer to the steering wheel, the time required for the driver to touch the steering wheel when the vehicle collides will be shortened. Therefore, in order to be able to start the steering column in time to protect the driver, it is necessary to advance the preset start time, and determine the advanced time as the start time of the steering column. When the driver's seat is positioned backward relative to the preset position, that is, the driver's seat is farther away from the steering wheel, the time required for the driver to touch the steering wheel when the vehicle collides will be extended. Therefore, in order to avoid the phenomenon that the driver cannot be effectively protected due to premature start of the steering column, it is necessary to delay the preset start time, and determine the delayed time as the start time of the steering column.

[0074] In one embodiment, the preset start time is advanced, and the advanced time is determined as the start time of the steering column, including:

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

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

[0077] In one embodiment, the preset start time is delayed, and the delayed time is determined as the start time of the steering column, including:

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

[0079] Among them, when the driver's seat position is relatively backward relative to the preset position, the second duration is determined according to the distance between the driver's seat position and the preset position, and the second duration can be determined according to the distance between the driver's seat position and the preset position and the duration corresponding to the unit distance. For example, assuming that when the unit distance is centimeters, 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, the second duration can be determined to be 0.3 seconds. Continuing to refer to the above example, if the preset start time is 1.5 seconds and the second duration is 0.3 seconds, 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 according to the distance between the driver's seat position and the preset position, and the ratio of the distance between the driver's seat position and the preset position to the preset speed threshold can also be determined as the second duration. 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.

[0080] In one embodiment, the driver seat information includes the driver seat belt status; determining the activation time and the post-activation crush holding force of the steering column according to the driver seat information includes:

[0081] If the driver's seat belt is in the buckle-inserted state, determining the post-startup crushing holding force of the steering column to be a third pressure threshold;

[0082] If the driver's seat belt is in a state where the buckle is not inserted, the post-startup crush holding force of the steering column is determined to be a fourth pressure threshold; the fourth pressure threshold is less than the third pressure threshold.

[0083] Among them, the driver's seat belt state includes the state of having been inserted into the buckle and the state of not being inserted into the buckle. The state of not being inserted into the buckle means that the plug of the driver's seat belt is not inserted into the buckle. It can be understood that when the driver's seat belt state is the state of not being inserted into the buckle, since the driver's seat belt cannot provide a buffer force to the driver when the vehicle collides, the driver will touch the steering wheel in a fast acceleration mode. At this time, the starting crushing force of the steering column will be relatively large to absorb the driver's touch force. In the subsequent crushing and holding stage, since most of the driver's touch force is absorbed by the starting crushing force, a relatively small post-start crushing holding force is required to protect the driver. When the driver's seat belt state is the state of having been inserted into the buckle, it means that the driver's seat belt will provide a buffer force to the driver when the vehicle collides. Compared with the state of the driver's seat belt state of not being inserted into the buckle, the driver will touch the steering wheel in a relatively slow acceleration mode, so that the driver's speed may still be relatively large after the driver touches the steering wheel. At this time, a relatively large post-start crushing holding force is required to protect the driver.

[0084] Step S104: Controlling the steering column of the vehicle based on the start-up crushing force, the start-up timing, and the crushing holding force after start-up.

[0085] Specifically, timing starts after detecting that the steering column of the vehicle needs to be started. When the timing reaches the starting time of the steering column, the steering column of the vehicle is started based on the starting crushing force. After the steering column of the vehicle is started, the crushing force of the steering column is controlled to be the post-starting crushing holding force, thereby realizing control of the steering column of the vehicle based on the starting crushing force, the starting time and the post-starting crushing holding force.

[0086] In summary, in the control method of the steering column provided in the above embodiment, the starting crushing force, starting time and the crushing holding force after starting of the steering column are determined by obtaining the driver information, the state of the steering column and the driver's seat information, so that the starting crushing force, starting time and the crushing holding force after starting of the steering column can be accurately controlled, thereby improving the safety of the passengers. At the same time, by accurately controlling the crushing force, irreversible damage to the entire system is avoided, and the system can be restored after a minor collision without damaging the steering system mechanism, thereby reducing the maintenance cost.

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

[0088] Obtain vehicle driving information;

[0089] The driving information is calculated using a pre-established vehicle collision risk assessment model to obtain a 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;

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

[0091] Among them, driving information includes information related to vehicle driving, including but not limited to vehicle information such as speed, acceleration, braking status and steering angle, environmental information such as weather, road conditions (dry, slippery, icy, etc.) and light, surrounding traffic conditions such as the location information and speed of other vehicles and / or pedestrians, and the status of passengers in the vehicle such as seat position information, seat belt wearing status, steering column adjustment position status, passenger posture, etc. Among them, the vehicle collision risk assessment model can be established by artificial intelligence algorithms such as decision tree algorithms, and is based on training of historical driving information and historical collision data of different vehicles. The specific model training process can refer to the existing technology. Here, historical driving information can include data such as the environment and driving behavior characteristics when the collision accident occurred.

[0092] Among them, when constructing a vehicle collision risk assessment model, features that are helpful in determining collision risks can be first extracted from the training data, and common features may include: the relative distance and speed difference between the vehicle and the vehicle in front; the acceleration and deceleration of the vehicle; whether the turn signal is used; the parking distance, whether it is close to an intersection or complex road conditions. At the same time, the features can be converted, including discretization of certain continuous features to enhance the accuracy of judgment, such as dividing the speed into three categories: "slow (0-25KPH)", "medium (25-40KPH)", and "fast (above 40KPH)". Then, based on the processed features, a vehicle collision risk assessment model is constructed using a decision tree algorithm.

[0093] Among them, corresponding protective measures can be set for different collision risk levels. For example, when the collision risk level is level one, the active safety system is controlled to take effect, including automatic braking, emergency braking, emergency steering, etc. When the collision risk level is level two, the reversible restraint system is controlled to take effect, including adaptive steering column, active seat belt, active backrest, etc. When the collision risk level is level three, the irreversible system is controlled to take effect, including engine sinking, airbag detonation, pre-tensioned seat belt detonation, etc. In this embodiment, the preset level can be set to level two, that is, when the collision risk level is level two or level three, it is determined that the steering column of the vehicle needs to be started. In addition, the performance of the model can be monitored regularly, and the model can be updated using real-time data accumulation. For example, when a new accident occurs, the corresponding data is collected for model retraining. In practical applications, the driving information of the vehicle can be obtained in real time and the collision risk assessment can be performed based on the driving information of the vehicle. In this way, by performing a collision risk assessment on the vehicle, it can be accurately determined whether the steering column of the vehicle needs to be started based on the collision risk assessment result, further improving the safety of the occupants.

[0094] Based on the same inventive concept as the above-mentioned embodiment, the above-mentioned method is described in detail below through a specific example.

[0095] See also Figure 2 , which is a specific flow chart of the steering column control method provided in this embodiment, including:

[0096] Step S201: perform collision judgment based on data collected by 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, a collision risk level is predicted using a preset vehicle collision risk assessment model.

[0099] Step S203: When it is determined that the passive safety device needs to be activated according to the predicted collision risk level, driver information, steering column status and driver seat information are obtained.

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

[0101] Step S204: Determine the starting crushing force, starting time and the crushing holding force after starting according to the driver information, the steering column state and the driver seat information.

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

[0103] Here, in the process of controlling the effectiveness of the steering column, operations such as controlling the effectiveness of the steering column unlocking solenoid valve, unlocking the steering column compression stroke lock, and controlling the flow rate of the servo valve may be included.

[0104] In summary, in the steering column control method provided in the above embodiment, in different frontal collision intensity conditions, the variable crushing starting force, crushing starting time and crushing holding force can be freely controlled based on the collision intensity, thereby protecting the safety of the occupants.

[0105] Based on the same inventive concept as the above embodiments, an embodiment of the present 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 figure is not used to indicate that the number of the processor 310 is one, but is only used to indicate the positional relationship of the processor 310 relative to other devices. In actual applications, the number of the processor 310 may be one or more; similarly, Figure 3The memory 311 shown in the figure has the same meaning, that is, it is only used to refer to the position relationship of the memory 311 relative to other devices. In practical applications, the number of memories 311 can be one or more. When the processor 310 runs the computer program, the above-mentioned steering column control method is implemented.

[0106] The electronic device may also include: at least one network interface 312. The various components in the electronic device are coupled together via a bus system 313. It is understood that the bus system 313 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 313 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the bus system 313 is not used in the following examples. Figure 3 Various buses are labeled as bus system 313.

[0107] The memory 311 may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. The nonvolatile memory may be 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 magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and 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), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).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 memories.

[0108] The memory 311 in the embodiment of the present invention is used to store various types of data to support the operation of the electronic device. Examples of these data include: any computer program used to operate on the electronic device, such as an operating system and an application; contact data; phone book data; messages; pictures; videos, etc. Among them, the operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application program may include various applications, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. Here, the program that implements the method of the embodiment of the present invention may be included in the application program.

[0109] Based on the same inventive concept as the above-mentioned embodiment, this embodiment further provides a computer storage medium, wherein a computer program is stored in the computer storage medium. The computer storage medium may be a ferromagnetic 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 disk, or a compact disc read-only memory (CD-ROM); or it may be various devices including one or any combination of the above-mentioned memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc. When the computer program stored in the computer storage medium is executed by the processor, the above-mentioned steering column control method is implemented. For the specific steps implemented when the computer program is executed by the processor, please refer to Figure 1 The description of the illustrated embodiment will not be repeated here.

[0110] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0112] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for controlling a steering column, characterized in that: include: In response to detecting that a steering column of the vehicle needs to be started, obtaining driver information, steering column status, and driver seat information; Determining a starting crushing force of the steering column according to the driver information and the state of the steering column; Determining the activation time and the crushing holding force after activation of the steering column according to the driver seat information; A steering column of the vehicle is controlled based on the startup crushing force, the startup timing, and the post-startup crushing holding force.

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

3. The method according to claim 2, characterized in that The driver information includes the driver type and the driver's seat belt wearing status; the determining the target basic starting crushing force corresponding to the driver information according to the correspondence between different driver information and different basic starting crushing forces of the steering column includes: Determining a first basic starting crushing force corresponding to the driver type according to a correspondence between different driver types and different basic starting crushing forces of the steering column; Determining a second basic starting crushing force corresponding to the driver's seat belt wearing state according to a corresponding relationship between different driver's seat belt wearing states and different basic starting crushing forces of the steering column; The maximum value of 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 step of adjusting the target basic starting crushing force based on the state of the steering column to determine the starting crushing force of the steering column includes: If the state of the steering column is a locked state, the sum of the target basic starting crushing force and the first pressure threshold is used as the starting crushing force of the steering column; If the steering column is in an unlocked state, the difference between the target basic starting crushing force and the second pressure threshold is used as the starting crushing force of the steering column.

5. The method according to claim 1, characterized in that The driving seat information includes the driving seat position; and determining the start-up time and the crush holding force after start-up of the steering column according to the driving seat information includes: If the position of the driver's seat 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 position of the driver's seat at the preset position; If the position of the driver's seat is rearward relative to 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: Determine a first duration according to the distance between the driver's seat position and the preset position, and determine a first target moment before the preset start moment as the start moment of the steering column; the time interval between the first target moment and the preset start moment 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 according to the distance between the driving seat position and the preset position, and the second target moment after the preset start moment is determined as the start moment of the steering column; the time interval between the second target moment and the preset start moment is the second duration.

7. The method according to claim 1, characterized in that The driver seat information includes the driver seat belt insertion state; the step of determining the start time and the crush holding force after start of the steering column according to the driver seat information includes: If the driver's seat belt is in the buckle-inserted state, determining that the post-startup crushing holding force of the steering column is a third pressure threshold; If the driver's seat belt is in an unbuckled state, the post-startup crushing holding force of the steering column is determined to be a 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 comprises: Acquiring driving information of the vehicle; The driving information is calculated using a pre-established vehicle collision risk assessment model to obtain a 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 is that the collision risk level is greater than or equal to a preset level, it is determined that the steering column of the vehicle 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 method for controlling a steering column according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the steering column control method according to any one of claims 1 to 8 is implemented.

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