Vehicle-mounted screen abnormal vibration detection method and device, equipment and storage medium

Abstract

The invention relates to the technical field of vehicle-mounted screens, in particular to a vehicle-mounted screen abnormal vibration detection method, device and equipment and a storage medium. Vehicle driving data and vehicle-mounted screen acceleration transmission data are obtained, and a current road type is determined in combination with a road condition vehicle vibration database; and then matching the vehicle-mounted screen acceleration transmission data with the road type and the road vibration characteristic template, and identifying the current scene type, such as manual touch overload, bad road working condition or vehicle body attitude imbalance. According to different scenes, corresponding screen control plans are executed, for example, a user is reminded to reduce touch force, lock the screen position or automatically recover the screen to a storage bin, through the steps, the risk that the screen is damaged due to vibration is effectively reduced, the service life is prolonged, meanwhile, user experience is improved, and user experience is improved. An intelligent protection mechanism can combine road conditions and vibration data, the accuracy of vibration detection is improved, and the stability of the vehicle-mounted screen under complex working conditions is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of in-vehicle screens, and particularly to a method, device, equipment and storage medium for detecting abnormal vibration of in-vehicle screens. Background Art

[0002] With the rapid development of intelligent vehicle technology, in-vehicle display systems are undergoing a revolutionary upgrade and iteration. From traditional fixed dashboards to rotatable central control large screens, and from single display modules to multi-screen linkage interactions, in-vehicle screens have gradually become the core carrier of human-vehicle interaction. Among them, the proportion of adjustable screens has been increasing year by year, and the enlargement of screen size and the complexity of mechanical structures have become the mainstream development trends in the industry. While this hardware upgrade improves the user experience, it also poses unprecedented challenges to the mechanical reliability of in-vehicle electronic devices.

[0003] In the complex and changeable vehicle driving environment, in-vehicle screens face dual vibration threats: on the one hand, continuous mechanical vibration will be caused on unpaved roads or speed bump sections, and this excitation will be transmitted through the vehicle body to the screen rotation shaft mechanism, resulting in mechanical losses; on the other hand, unconscious touch by users causes the screen to bear a combined load exceeding the design limit. The current technical solutions mainly rely on the data collection of a single acceleration sensor, and there is insufficient recognition of the coupling effect of human operation and mechanical vibration, often resulting in problems such as false triggering of protection (such as incorrect screen locking during normal touch) or protection delay (such as failure to stow the screen in time during severe bumps). This extensive vibration protection mechanism not only reduces the user experience, but also causes cumulative damage due to the inability to effectively handle this overload stress, resulting in fatigue fracture of the screen rotation shaft. According to industry statistics, mechanical failures of in-vehicle screens caused by this account for more than 32% of the total maintenance volume.

[0004] Therefore, how to achieve accurate identification of vibration scenarios, so as to ensure the stability and safety of in-vehicle screens under different excitation sources (human touch, road impact, vehicle body imbalance) conditions has become an urgent problem to be solved in this field. Summary of the Invention

[0005] The main purpose of the present invention is to provide a method, device, equipment and storage medium for detecting abnormal vibration of in-vehicle screens, aiming to solve the technical problem of how to achieve accurate identification of vibration scenarios in the prior art, so as to ensure the stability and safety of in-vehicle screens under different excitation sources (human touch, road impact, vehicle body imbalance) conditions.

[0006] To achieve the above object, the present invention provides a method for detecting abnormal vibration of in-vehicle screens, the method comprising the following steps: Obtain vehicle driving data and in-vehicle screen acceleration transfer data; Determine the road type according to the vehicle driving data; Determine the abnormal vibration scenario type based on the in-vehicle screen acceleration transfer data and the road type; Execute the corresponding screen control plan according to the abnormal vibration scenario type to protect the in-vehicle screen.

[0007] Optionally, the determining the road type according to the vehicle driving data includes: Obtain the vehicle's overall vibration data according to the vehicle driving data, where the vehicle driving data includes real-time acceleration, vehicle attitude angle, and body vibration spectrum; Obtain the road type of the current driving according to the vehicle's overall vibration data and the road condition-vehicle vibration database.

[0008] Optionally, before obtaining the road type of the current driving according to the vehicle's overall vibration data and the road condition-vehicle vibration database, it further includes: Obtain multi-dimensional road test data through multiple rounds of real vehicle tests on roads of a preset type. The multi-dimensional road test data includes vehicle's overall vibration data, road test vehicle speed data, and road visual feature data; Extract features from the multi-dimensional road test data to obtain a road vibration feature set. The road vibration features include transient road features and normal road features; Associate and label the road vibration feature set with the road type corresponding to the road test data to obtain the road condition-vehicle vibration database, where the road condition-vehicle vibration database includes multiple road basic vibration feature templates corresponding one-to-one to the road type.

[0009] Optionally, the determining the abnormal vibration scenario type based on the in-vehicle screen acceleration transfer data and the road type includes: Obtain local vibration parameters according to the in-vehicle screen acceleration transfer data; Match the local vibration parameters with the road basic vibration feature templates corresponding to the road type to obtain a matching degree deviation; When the matching degree deviation is greater than the deviation threshold, determine the abnormal vibration component according to the local vibration parameters and the road basic vibration feature templates; Obtain the abnormal vibration scenario type according to the abnormal vibration component.

[0010] Optionally, the obtaining the abnormal vibration scenario type according to the abnormal vibration component includes: Determine the vibration excitation source signal according to the abnormal vibration component. The vibration excitation source signal includes human-computer interaction excitation signal, road environment excitation signal, and gravity vector offset signal; If the vibration excitation source signal satisfies the short-time pulse characteristic and exceeds the preset human-computer interaction impact threshold, it is determined that the abnormal vibration scenario type is a human touch overload scenario; If the vibration excitation source signal satisfies the low-frequency continuous fluctuation characteristic, it is determined that the abnormal vibration scenario type is a road harsh working condition scenario; If the projection component of the gravitational acceleration in the vibration excitation source signal deviates from the reference value by more than a preset ratio and the duration is greater than the safety threshold, it is determined that the abnormal vibration scenario type is a vehicle body attitude imbalance scenario.

[0011] Optionally, before determining the vibration excitation source signal according to the abnormal vibration component, it further includes: Apply multi-point and multi-direction touch behaviors in each working state of the in-vehicle screen, and record the impact acceleration data. The working states include the not fully retracted state, the retracting process state, the unfolding process state, and the normal working state; According to the force application value, force application direction, and impact acceleration data of the touch behavior, obtain a touch force-impact acceleration transfer function model; According to the touch force-impact acceleration transfer function model and the in-vehicle screen usage specifications, determine the preset human-computer interaction impact threshold.

[0012] Optionally, according to the abnormal vibration scenario type, execute the corresponding screen control plan to protect the in-vehicle screen, including: When the abnormal vibration scenario type is a human touch overload scenario, generate a user prompt message to remind the user to reduce the touch force; When the abnormal vibration scenario type is a road harsh working condition scenario, if the current in-vehicle screen is in the user usage state, activate the rotating shaft damping device to lock the screen position, and if the current in-vehicle screen is in the standby state, automatically retract it into the storage bin; When the abnormal vibration scenario type is a vehicle body attitude imbalance scenario, adjust the vehicle active safety function to the pre-activated state, and automatically retract the in-vehicle screen into the storage bin.

[0013] In addition, to achieve the above object, the present invention also proposes an in-vehicle screen abnormal vibration detection device, and the in-vehicle screen abnormal vibration detection device includes: A data acquisition module, configured to acquire vehicle driving data and in-vehicle screen acceleration transfer data; A data processing module, configured to determine the road type according to the vehicle driving data; The data processing module is further configured to determine the abnormal vibration scenario type according to the in-vehicle screen acceleration transfer data and the road type; A vehicle control module is configured to execute a corresponding screen control plan according to the type of abnormal vibration scenario to protect the in-vehicle screen.

[0014] In addition, to achieve the above object, the present invention also provides an in-vehicle screen abnormal vibration detection device, which includes: a memory, a processor, and an in-vehicle screen abnormal vibration detection program stored on the memory and executable on the processor. The in-vehicle screen abnormal vibration detection program is configured to implement the steps of the in-vehicle screen abnormal vibration detection method as described above.

[0015] In addition, to achieve the above object, the present invention also provides a storage medium on which an in-vehicle screen abnormal vibration detection program is stored. When the in-vehicle screen abnormal vibration detection program is executed by a processor, it implements the steps of the in-vehicle screen abnormal vibration detection method as described above.

[0016] One or more technical solutions proposed in this application have at least the following technical effects: By obtaining vehicle driving data and in-vehicle screen acceleration transfer data, and combining with a road condition vehicle vibration database, the current road type is determined. Then, by matching the in-vehicle screen acceleration transfer data with the road type and road vibration feature template, the current scenario type is identified, such as human touch overload, poor road conditions, or vehicle body attitude imbalance. According to different scenarios, corresponding screen control plans are executed, such as reminding the user to reduce the touch force, locking the screen position, or automatically retracting the screen into the storage bin. Through the above steps, the risk of screen damage due to vibration is effectively reduced, the service life is extended, and the user experience is improved at the same time. The intelligent protection mechanism can combine road conditions and vibration data, improve the accuracy of vibration detection, and enhance the stability of the in-vehicle screen under complex working conditions. Description of the Drawings

[0017] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a flowchart of the first embodiment of the in-vehicle screen abnormal vibration detection method of the present invention; Figure 2 It is a flowchart of the second embodiment of the in-vehicle screen abnormal vibration detection method of the present invention; Figure 3 Schematic flowchart of the third embodiment of the vehicle-mounted screen abnormal vibration detection method according to the present invention; Figure 4 Block diagram of the structure of the first embodiment of the vehicle-mounted screen abnormal vibration detection device according to the present invention; Figure 5 Schematic diagram of the structure of the vehicle-mounted screen abnormal vibration detection device which is the hardware operating environment involved in the embodiment solution of the present invention.

[0020] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0021] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0022] In order to better understand the technical solutions of the present application, the following will be described in detail with reference to the accompanying drawings of the specification and specific embodiments.

[0023] The main solution of the embodiments of the present application is: obtaining vehicle driving data and vehicle-mounted screen acceleration transfer data; determining the road type according to the vehicle driving data; determining the abnormal vibration scenario type according to the vehicle-mounted screen acceleration transfer data and the road type; and executing the corresponding screen control plan according to the abnormal vibration scenario type to realize the protection of the vehicle-mounted screen.

[0024] Since vehicle-mounted screens are gradually developing towards large sizes and foldable / retractable forms, their mechanical fixing methods are sufficient to maintain stability in static or conventional driving scenarios. However, when the vehicle encounters extreme vibration or impact conditions, such as instantaneous user touch impacts, severe jolts or vehicle rollovers, complex external forces will act on the screen fixing components, exceeding the conventional force directions of their structural designs, resulting in local deformation or hidden damage. Traditional protection schemes rely on passive mechanical damping or fixed threshold triggering protection, which can neither accurately distinguish between user accidental touches and environmental impacts, nor dynamically adapt to the protection requirements of different abnormal scenarios, and are prone to false triggering or delayed response, that is, failure to recover in time under abnormal impacts, resulting in structural damage. This contradiction is particularly prominent in the foldable screen scenario.

[0025] The present application provides a solution. By obtaining vehicle driving data and in-vehicle screen acceleration transmission data, and combining with a road condition vehicle vibration database, the current road type is determined. Then, the in-vehicle screen acceleration transmission data is matched with the road type and the road vibration characteristic template to identify the current scenario type, such as human touch overload, poor road conditions, or vehicle body attitude imbalance. According to different scenarios, corresponding screen control plans are executed, such as reminding the user to reduce the touch force, locking the screen position, or automatically retracting the screen into the storage bin. Through the above steps, the risk of screen damage due to vibration is effectively reduced, the service life is extended, and at the same time, the user experience is improved. The intelligent protection mechanism can combine road conditions and vibration data, improve the accuracy of vibration detection, and enhance the stability of the in-vehicle screen under complex working conditions.

[0026] Based on this, an embodiment of the present invention provides a method for detecting abnormal vibration of an in-vehicle screen. Referring to Figure 1 , Figure 1 is a schematic flowchart of the first embodiment of a method for detecting abnormal vibration of an in-vehicle screen according to the present invention.

[0027] In this embodiment, the method for detecting abnormal vibration of the in-vehicle screen includes the steps: Step S10: Obtain vehicle driving data and in-vehicle screen acceleration transmission data.

[0028] It should be noted that the vehicle driving data mainly includes information such as real-time acceleration, vehicle attitude angle, and vehicle body vibration spectrum. After analyzing these data, the overall dynamic state of the vehicle during driving can be obtained, including road conditions, the movement attitude of the vehicle, and the vibration conditions suffered by the vehicle body, thereby providing basic information for subsequent vibration scenario analysis. The in-vehicle screen acceleration transmission data refers to the acceleration response data shown by the in-vehicle screen during vibration. Since the in-vehicle screen is not rigidly connected to the vehicle, the acceleration data transmitted from the vehicle to the in-vehicle screen cannot directly apply the vehicle's acceleration data. Therefore, the in-vehicle screen acceleration transmission data here is the vibration frequency, amplitude of the screen itself, and the vibration transmission relationship with other components. By analyzing these data, it is possible to identify whether the screen has abnormal vibration and the specific characteristics of the abnormal vibration.

[0029] It is understandable that different road types can cause different vibration characteristics in vehicles. By analyzing vehicle driving data, external factors (such as rough or bumpy roads) that cause abnormal screen vibration can be preliminarily screened out. The role of the vehicle-mounted screen acceleration transfer data is to provide microscopic information on the local vibration of the screen, helping the system accurately identify whether the screen has abnormal vibration and the specific type of abnormal vibration. Even when the vehicle is driving under the same road conditions, due to factors such as its installation position and structural characteristics, the screen will exhibit vibration characteristics different from the overall vehicle vibration. By analyzing the acceleration transfer data of the screen, it is possible to further determine whether the screen is subjected to additional vibration excitation (such as excessive manual touch or vehicle body attitude imbalance), thereby achieving accurate classification of abnormal vibration scenarios.

[0030] It should be understood that the vehicle driving data and the vehicle-mounted screen acceleration transfer data complement each other. The former provides the macroscopic vehicle vibration background, and the latter provides the microscopic screen vibration details. The combination of the two can achieve comprehensive detection and accurate identification of abnormal vibration scenarios of the vehicle-mounted screen, providing a reliable basis for subsequent screen protection measures.

[0031] Step S20: Determine the road type according to the vehicle driving data.

[0032] It should be noted that the vehicle driving data includes but is not limited to the real-time acceleration of the current vehicle, vehicle attitude angles, and vehicle body vibration spectra. These data can comprehensively reflect the dynamic performance of the vehicle under different road conditions. To improve the accuracy of road type identification, this solution has pre-collected multi-dimensional road test data including vehicle body vibration data, road test vehicle speed data, and road visual feature data through multiple rounds of real vehicle tests on various preset types of roads. By extracting features from these data, a road vibration feature set covering transient and normal features is obtained, and it is associated and labeled with the corresponding road types to construct a road condition - vehicle vibration database. This database stores road basic vibration feature templates corresponding to various road types. The system compares the real-time obtained vehicle body vibration data with the feature templates in the road condition - vehicle vibration database to quickly and accurately identify the road type of the current driving.

[0033] It is understandable that different road types have unique vibration characteristics, which are mainly reflected in aspects such as vibration frequency, amplitude, vibration duration, and vibration regularity. Urban roads usually have a relatively flat road surface, with a small vibration amplitude, a low and relatively stable vibration frequency when vehicles are driving. Their vibration characteristics are mainly manifested as low-frequency, low-amplitude smooth vibrations, with fewer transient vibration characteristics, and the overall vibration is relatively regular; rural roads of this kind contain more joints, small potholes or speed bumps, and vehicles will frequently encounter local vibration excitations when driving. Their vibration characteristics are manifested as high-frequency, medium-amplitude vibrations, and the transient vibration characteristics are obvious. For example, when passing over a speed bump, there will be short-term high-amplitude vibrations; rough mountain roads usually contain more potholes, gravel and slope changes, and the vibration amplitude is large when vehicles are driving, the vibration frequency is high and irregular. Their vibration characteristics are manifested as high-frequency, high-amplitude complex vibrations, with obvious transient characteristics. For example, when passing over a large pothole or sharp turn, there will be violent vibrations.

[0034] It should be understood that by collecting multi-dimensional road test data under different road types and performing feature extraction and annotation on these data, a road condition-vehicle vibration database covering multiple road types can be constructed. This data-driven method not only improves the accuracy of road type recognition, but also provides an important basis for subsequent abnormal vibration detection and protection measures of in-vehicle screens.

[0035] Step S30: Determine the type of abnormal vibration scenario according to the in-vehicle screen acceleration transfer data and the road type.

[0036] It should be noted that not all road scenarios will cause abnormal vibrations of the in-vehicle screen. The abnormal vibrations of the screen are often jointly caused by specific vibration excitation sources and vehicle conditions. Therefore, relying solely on road type information is not sufficient to accurately judge the abnormal vibration scenario, and it is necessary to further analyze in combination with the in-vehicle screen acceleration transfer data.

[0037] It can be understood that the types of abnormal vibration scenarios in this application are mainly divided into three cases: manual touch overload scenario, road harsh working condition scenario, and vehicle body attitude imbalance scenario. First, the manual touch overload scenario refers to the situation where the user applies excessive force or high operation frequency when operating the in-vehicle screen, resulting in the screen being impacted beyond the design range. In this scenario, the vibration excitation source signal of the screen shows short-time pulse characteristics, and the impact intensity exceeds the preset touch force threshold. The road harsh working condition scenario refers to the situation where the vehicle is driving on a rough or severely damaged road, and the high-frequency and high-amplitude vibrations of the road are transmitted to the in-vehicle screen through the vehicle body, causing abnormal vibration of the screen. In this scenario, the vibration excitation source signal shows low-frequency continuous fluctuation characteristics, and the vibration intensity is closely related to the road conditions. This abnormal vibration causes fatigue damage to the screen during long-term use and affects its service life. The vehicle body attitude imbalance scenario refers to the situation where the vehicle body attitude changes violently during driving due to sudden braking, sharp turning, or passing through a road surface with a large slope, resulting in the in-vehicle screen being affected by the abnormal component of gravitational acceleration. In this scenario, the vibration excitation source signal shows that the projection component of gravitational acceleration deviates from the reference value and lasts for a long time. This abnormal vibration causes the screen to loosen or even fall off from the fixed position, posing a serious threat to the safety of the screen.

[0038] It should be understood that these three scenarios not only cover the main abnormal vibration situations encountered in the actual use of the in-vehicle screen, but each scenario has unique vibration characteristics and clear excitation sources, which are convenient for accurate identification by combining the in-vehicle screen acceleration transfer data with the road type. Therefore, this application defines these three scenarios as abnormal vibration scenarios to take targeted protection measures to ensure the safety and reliability of the in-vehicle screen.

[0039] Step S40: According to the type of abnormal vibration scenario, execute the corresponding screen control plan to protect the in-vehicle screen.

[0040] It should be noted that different abnormal vibration scenarios have different degrees and ways of affecting the in-vehicle screen. Therefore, targeted control measures need to be taken according to the specific scenario type to minimize the damage of vibration to the screen.

[0041] In one embodiment, executing a corresponding screen control plan according to the abnormal vibration scenario type to protect the in-vehicle screen, including: when the abnormal vibration scenario type is a human touch overload scenario, generating a user prompt message to remind the user to reduce the touch force; when the abnormal vibration scenario type is a road harsh condition scenario, if the current in-vehicle screen is in the user usage state, activating the rotating shaft damping device to lock the screen position, and if the current in-vehicle screen is in the standby state, automatically retracting it into the storage compartment; when the abnormal vibration scenario type is a vehicle body attitude imbalance scenario, adjusting the vehicle active safety function to the pre-activated state and automatically retracting the in-vehicle screen into the storage compartment.

[0042] It can be understood that this design of the control plan for different scenarios fully considers the influence characteristics of different vibration sources on the screen. For example, in the human touch overload scenario, by prompting the user to reduce the touch force, the screen can be prevented from being damaged due to excessive impact without affecting normal use; in the road harsh condition scenario, by locking the screen position or automatically retracting the screen, the vibration amplitude of the screen on the bumpy road surface can be effectively reduced to protect the screen from mechanical damage; in the vehicle body attitude imbalance scenario, if the system identifies the risk of vehicle body attitude imbalance and anticipates that the vehicle may be about to roll over, pre-activating the vehicle active safety function as early as possible can help functions such as the electronic stability program ESP and the vehicle stability control system VSC to intervene in advance, helping the driver to stabilize the vehicle attitude and avoid or mitigate the occurrence of rollover accidents. At the same time, automatically retracting the in-vehicle screen into the storage compartment can prevent the screen from being damaged during the rollover process or causing secondary injuries to the vehicle occupants, providing support for the overall safety of the vehicle.

[0043] It should be understood that this targeted screen control plan can not only effectively protect the in-vehicle screen and extend its service life, but also improve the user experience and safety. By accurately identifying abnormal vibration scenarios and taking corresponding measures, this solution can ensure the stability and reliability of the in-vehicle screen in a complex and changeable vehicle driving environment, while reducing misoperations and visual interference caused by vibration, providing a more comfortable and safe driving environment for users.

[0044] In this embodiment, by obtaining vehicle driving data (including real-time acceleration, vehicle attitude angle, and body vibration spectrum) and in-vehicle screen acceleration transmission data (the vibration frequency, amplitude, and vibration transmission relationship of the screen itself), combined with the road condition-vehicle vibration database, the current road type is identified, and further the abnormal vibration scenario type of the screen is analyzed, including three scenarios: human touch overload, poor road conditions, and body attitude imbalance. According to different scenarios, corresponding screen protection measures are executed, such as reminding the user to reduce the touch force, locking the screen position, or automatically retracting the screen into the storage bin, and pre-activating the vehicle active safety function when necessary to ensure the safety and reliability of the in-vehicle screen.

[0045] In summary, in this embodiment, through comprehensive analysis of vehicle driving data and in-vehicle screen acceleration transmission data, accurate identification and classification of abnormal vibration scenarios of the in-vehicle screen are achieved, and targeted protection measures are taken according to different scenarios. This design not only effectively reduces the risk of screen damage due to abnormal vibration and extends the service life of the screen, but also improves the overall safety of the vehicle through early warning and active intervention. This intelligent protection mechanism provides a strong guarantee for the stable operation of the in-vehicle screen under complex working conditions, has significant practicality and promotion value, and provides a more comfortable and safe driving environment for users.

[0046] Based on the first embodiment of the present application, in the second embodiment of the present application, for the same or similar content as in the above-mentioned embodiment one, reference can be made to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 2 , the step S20 includes: Step S201: Obtain the vehicle body vibration data according to the vehicle driving data.

[0047] It should be noted that the information such as real-time acceleration, vehicle attitude angle, and body vibration spectrum included in the vehicle driving data are key parameters reflecting the overall dynamic state of the vehicle during driving. Through comprehensive analysis of these data, the vehicle body vibration data can be extracted, including characteristics such as vibration frequency, amplitude, vibration duration, and regularity.

[0048] Step S202: Obtain the current driving road type according to the vehicle body vibration data and the road condition-vehicle vibration database.

[0049] It should be noted that the road condition-vehicle vibration database is constructed through multiple rounds of real vehicle tests on various preset types of roads, and stores the road basic vibration characteristic templates corresponding to different road types. These templates cover transient and normal vibration characteristics and can comprehensively reflect the vehicle vibration conditions under different road conditions.

[0050] It can be understood that by comparing the real-time obtained vehicle vibration data with the characteristic templates in the road condition-vehicle vibration database, the road type of the current driving can be quickly identified through feature matching. For example, when the vehicle vibration data shows stable vibration with low frequency and low amplitude, the system can identify that the vehicle is driving on an urban road; while when the vibration data shows complex vibration with high frequency and high amplitude, it may be driving on a rough mountain road.

[0051] In one embodiment, before the step S202, it further includes: obtaining multi-dimensional road test data according to multiple rounds of real vehicle tests on roads of a preset type, where the multi-dimensional road test data includes vehicle vibration data, road test vehicle speed data, and road visual feature data; extracting features from the multi-dimensional road test data to obtain a road vibration feature set, where the road vibration features include transient road features and normal road features; associating and labeling the road vibration feature set with the road type corresponding to the road test data to obtain the road condition-vehicle vibration database, where the road condition-vehicle vibration database includes a plurality of road basic vibration feature templates corresponding one-to-one to the road types.

[0052] It should be noted that the vehicle vibration data refers to the vibration conditions experienced by the vehicle body and its key components during driving, specifically manifested as the acceleration changes of the vehicle in different directions (such as vertical, horizontal, and longitudinal) during driving. On the other hand, the acceleration data can help identify whether the vehicle passes through bumpy sections, speed bumps, or sudden brakes, etc. The road test vehicle speed data refers to the speed information of the vehicle when driving on different road types and working conditions. The instantaneous vehicle speed in the speed information can help analyze the dynamic behavior of the vehicle under different road conditions. For example, the vehicle speed may be low and change frequently on urban roads, while the vehicle speed may be high and relatively stable on highways. The road visual feature data refers to the road image information collected by a visual sensor (such as a camera) and the features related to the road condition extracted therefrom. These features specifically refer to road flatness, which identifies the flatness of the road surface through image analysis, such as whether there are potholes, cracks, or gravel, etc. The road flatness directly affects the vehicle's vibration characteristics.

[0053] It can be understood that by extracting features from the multi-dimensional road test data, a road vibration feature set can be obtained, where the road vibration features are divided into transient road features and normal road features. Transient features refer to short-term and high-intensity vibrations generated during specific events (such as passing through speed bumps, potholes, or sudden brakes). These features usually have a higher frequency, a larger amplitude, and a shorter duration. The normal features refer to the stable vibrations generated during the normal driving of the vehicle. These vibrations usually have a lower frequency, a smaller amplitude, and stronger vibration regularity.

[0054] It should be understood that by extracting these two types of features, the vibration conditions under different road types can be comprehensively reflected. For example, on urban roads, the normal state features may be manifested as stable vibrations with low frequency and low amplitude; while on rough mountain roads, the transient features may be more prominent, manifested as complex vibrations with high frequency and high amplitude. The results of these feature extractions will serve as important bases for subsequent road type recognition.

[0055] In this embodiment, the vehicle vibration data is extracted from the vehicle driving data, covering features such as vibration frequency, amplitude, duration, and regularity. Then, the transient and normal state road vibration features are extracted using the multi-dimensional road test data collected from multiple rounds of real vehicle tests on various preset type roads, and a road condition - vehicle vibration database is constructed. Finally, the real-time vehicle vibration data is compared with the feature templates in the database to quickly identify the road type of the current driving.

[0056] In summary, in this embodiment, by constructing a road condition - vehicle vibration database, accurate recognition of the road type is achieved. Combining with the multi-dimensional road test data, the system can quickly match the current vibration features and accurately judge the road type. This accurate recognition ability provides a reliable basis for the abnormal vibration detection of the in-vehicle screen, enables protective measures to be taken in advance, extends the service life of the screen, reduces misjudgment at the same time, and improves the overall safety and user experience of the vehicle system.

[0057] Based on the first embodiment of the present application, in the third embodiment of the present application, for the same or similar content as in the above-mentioned embodiment one, reference can be made to the above introduction and will not be elaborated hereinafter. On this basis, please refer to Figure 3 , step S30, includes: Step S301: Obtain local vibration parameters according to the in-vehicle screen acceleration transfer data.

[0058] It should be noted that the local vibration parameters refer to the specific vibration characteristics shown by the in-vehicle screen in the vehicle vibration environment. By real-time monitoring and analysis of these parameters, the system can determine whether the vibration of the screen deviates from the normal range, and further identify the type and source of abnormal vibration.

[0059] It can be understood that human touch and road bumps can be distinguished by amplitude and frequency, the transient vibration characteristics and normal state vibration characteristics can be obtained by vibration duration and regularity, and the potential harm to the screen in the current scenario can be evaluated by vibration energy.

[0060] Step S302: Perform feature matching between the local vibration parameters and the road basic vibration feature template corresponding to the road type to obtain a matching degree deviation.

[0061] It should be noted that the road foundation vibration feature template is a set of vibration features pre - constructed according to different road types and stored in the road condition - vehicle vibration database. These templates are extracted from multi - dimensional road test data and can reflect the normal vibration features under a specific road type, including key parameters such as vibration frequency, amplitude, regularity, etc. The local vibration parameters, on the other hand, reflect the current actual vibration state of the screen. By comparing the local vibration parameters with the corresponding road foundation vibration feature templates, the similarity or difference between the two can be quantified, thereby obtaining the matching degree deviation.

[0062] It can be understood that the matching degree deviation obtained from the same scene and different feature templates is different, and based on the magnitude of the matching degree deviation, the preset scene closest to the current actual scene can be determined. On the premise of determining the scene attribution, when the matching degree deviation is greater than the preset threshold, it indicates that there is a significant difference between the vibration state of the screen and the normal vibration features under the current road type, and there may be abnormal vibration. This method based on feature matching can not only effectively identify abnormal vibration but also reduce the possibility of misjudgment. For example, when the vehicle passes over a speed bump, although there will be short - term high - amplitude vibration, if this vibration matches the transient features in the road foundation vibration feature template, the system will not misjudge it as abnormal vibration. By reasonably setting the matching degree deviation threshold, the system can achieve accurate detection of abnormal vibration under complex working conditions, ensuring the safety and reliability of the in - vehicle screen.

[0063] Step S303: When the matching degree deviation is greater than the deviation threshold, determine the abnormal vibration component according to the local vibration parameters and the road foundation vibration feature template.

[0064] It should be noted that the matching degree deviation is an index to measure the similarity between the local vibration parameters and the road foundation vibration feature template. When the deviation exceeds the preset threshold, it indicates that there is a significant difference between the vibration state of the screen and the normal vibration features under the current road type. This difference may be caused by factors such as manual touch, road bumps, or changes in vehicle body posture.

[0065] It can be understood that the process of determining the abnormal vibration component is achieved by comparing the differences between the local vibration parameters and the road foundation vibration feature template. For example, if the amplitude in the local vibration parameters is significantly higher than the amplitude in the road foundation vibration feature template, or the vibration frequency does not match the frequency in the template, these different parts are the abnormal vibration components. By extracting these abnormal vibration components, the characteristics of abnormal vibration can be more clearly identified. For example, when there are short - term high - amplitude pulses in the abnormal components, it may indicate excessive manual touch, while low - frequency continuous fluctuations may indicate poor road conditions.

[0066] It should be understood that the normal vibration characteristics are different under different road types. Therefore, when determining the abnormal vibration component, the influence of the current road conditions needs to be considered. For example, when driving on a rough mountain road, the vibration amplitude of the vehicle is already large. However, if some components in the local vibration parameters still exceed the range of the road basic vibration characteristic template, these exceeding parts may be abnormal vibration components.

[0067] Step S304: Obtain the abnormal vibration scenario type according to the abnormal vibration component.

[0068] It can be understood that the identification of the abnormal vibration scenario type is based on the characteristics of the abnormal vibration component. For example, if the abnormal vibration component shows short-time high-amplitude pulses and a high frequency, it may indicate that it is caused by human touch overload; if the abnormal vibration component shows low-frequency, high-amplitude continuous fluctuations, it may indicate that it is caused by poor road conditions; and if the abnormal vibration component contains an abnormal component of gravitational acceleration, it may indicate that the vehicle body attitude is out of balance. By accurately identifying these scenario types, the system can take targeted protection measures, such as reminding the user, locking the screen, or activating safety functions, so as to effectively protect the in-vehicle screen.

[0069] In one embodiment, the obtaining the abnormal vibration scenario type according to the abnormal vibration component includes: determining a vibration excitation source signal according to the abnormal vibration component, where the vibration excitation source signal includes a human-computer interaction excitation signal, a road environment excitation signal, and a gravity vector offset signal; if the vibration excitation source signal satisfies the short-time pulse characteristic and exceeds a preset human-computer interaction impact threshold, it is determined that the abnormal vibration scenario type is a human touch overload scenario; if the vibration excitation source signal satisfies the low-frequency continuous fluctuation characteristic, it is determined that the abnormal vibration scenario type is a poor road condition scenario; if the projection component of gravitational acceleration in the vibration excitation source signal deviates from the reference value by more than a preset ratio and the duration is greater than the safety threshold, it is determined that the abnormal vibration scenario type is a vehicle body attitude imbalance scenario.

[0070] It should be noted that the vibration excitation source signal refers to the signal generated by the external excitation factors that cause the abnormal vibration of the in-vehicle screen. By analyzing the characteristics of the abnormal vibration component to determine these excitation source signals, the types of these excitations mainly include human-computer interaction excitation signals, road environment excitation signals, and gravity vector offset signals. The human-computer interaction excitation signal is usually caused by the user's excessive touch force on the screen and shows short-time high-amplitude pulses; the road environment excitation signal is caused by the road conditions during the vehicle driving process and shows low-frequency continuous fluctuations; the gravity vector offset signal is related to the attitude change of the vehicle, such as sudden braking, sharp turning, or vehicle tilt. By identifying the characteristics of these excitation source signals, the specific scenario type of the abnormal vibration can be accurately judged.

[0071] It can be understood that when the vibration excitation source signal appears as a short - time pulse and the amplitude exceeds the preset human - machine interaction impact threshold, it can be determined as a human - touch overload scenario. This scenario usually occurs when the user presses too hard or operates the screen quickly, and the impact force on the screen exceeds the design range. On the other hand, when the vibration excitation source signal appears as a low - frequency continuous fluctuation, it can be determined as a poor road condition scenario. This scenario usually occurs when the vehicle is driving on a rough or severely damaged road, and the bumps of the road are transmitted to the screen through the vehicle body, resulting in increased screen vibration. Finally, when the projection component of the gravitational acceleration in the vibration excitation source signal deviates from the reference value by more than a preset ratio, and the duration of this deviation state is greater than the safety threshold, it can be determined as a vehicle body attitude imbalance scenario. This scenario may occur when the vehicle brakes suddenly, makes a sharp turn, or passes through a road surface with a large slope, and the vehicle body attitude changes violently, resulting in the screen being affected by an additional gravitational acceleration component.

[0072] In one embodiment, before determining the vibration excitation source signal according to the abnormal vibration component, it further includes: applying multi - point and multi - direction touch behaviors under various working states of the in - vehicle screen, and recording impact acceleration data, where the working states include an incompletely retracted state, a retraction process state, an unfolding process state, and a normal working state; obtaining a touch - force - impact - acceleration transfer function model according to the force application value, force application direction of the touch behavior, and the impact acceleration data; and determining the preset human - machine interaction impact threshold according to the touch - force - impact - acceleration transfer function model and the in - vehicle screen usage specifications.

[0073] It should be noted that since the in - vehicle screen exhibits different vibration response characteristics under different working states (such as incompletely retracted, retraction process, unfolding process, and normal working state), in order to accurately evaluate the impact of human touch on screen vibration, it is necessary to apply multi - point and multi - direction touch behaviors under these states and record the corresponding impact acceleration data. These data reflect the vibration response of the screen under different touch conditions, and based on this, the basis for constructing the touch - force - impact - acceleration transfer function model can be established. In this way, the relationship between the touch force and the screen vibration can be quantified.

[0074] It can be understood that the touch - force - impact - acceleration transfer function model is established by analyzing the force application value, force application direction of the touch behavior, and the corresponding impact acceleration data. This model describes how the touch force is converted into the vibration response of the screen, and can help the system identify and distinguish normal touch operations from touch behaviors that may cause abnormal vibration. For example, based on this model, the impact acceleration received by the screen can be quantified through the force application value, so as to judge the external conditions that cause abnormal vibration. The establishment of this model not only considers the physical characteristics of the screen, but also combines various working conditions in the actual use scenario, ensuring the accuracy and practicality of the model.

[0075] It should be understood that the preset human-machine interaction impact threshold is determined based on the touch force-impact acceleration transfer function model and the vehicle-mounted screen usage specifications. This threshold is used to distinguish normal touch operations from abnormal touch behaviors that may cause screen damage. Through experiments and data analysis, the maximum touch force and the corresponding impact acceleration that the screen can withstand in different working states can be determined. When the actually detected touch force or impact acceleration exceeds this threshold, the system can determine it as a human touch overload scenario and take corresponding protection measures.

[0076] In this embodiment, by analyzing the acceleration transfer data of the vehicle-mounted screen, local vibration parameters are extracted and compared with the road base vibration characteristic template to identify abnormal vibration components and their excitation source signals. According to the characteristics of the abnormal vibration components, the types of abnormal vibration scenarios are determined, specifically including scenarios such as human touch overload, poor road conditions, and vehicle body attitude imbalance. In addition, the solution also constructs a touch force-impact acceleration transfer function model by applying multi-point touch behaviors in different working states and sets a human-machine interaction impact threshold to further optimize the accuracy of abnormal vibration detection. Finally, the system takes targeted protection measures according to the type of abnormal vibration scenario, such as reminding the user, locking the screen, or activating safety functions, to ensure the safety and reliability of the vehicle-mounted screen.

[0077] In summary, in this embodiment, through refined vibration detection and scenario classification, the service life and safety of the vehicle-mounted screen are significantly improved. By constructing a touch force-impact acceleration transfer function model and setting an impact threshold, the system can accurately identify abnormal touch operations and avoid screen damage caused by human misoperations. At the same time, combined with the road base vibration characteristic template, the system can quickly identify the type of abnormal vibration scenario and take targeted protection measures to reduce the risk of screen damage under complex working conditions. This intelligent protection strategy not only extends the screen service life but also optimizes the user experience and reduces the inconvenience and safety hazards caused by screen failures.

[0078] This application also provides a device for detecting abnormal vibration of a vehicle-mounted screen. Please refer to Figure 4 The device for detecting abnormal vibration of the vehicle-mounted screen includes: A data acquisition module 10, which is used to acquire vehicle driving data and vehicle-mounted screen acceleration transfer data; A data processing module 20, which is used to determine the road type according to the vehicle driving data; The data processing module 20 is also used to determine the type of abnormal vibration scenario according to the vehicle-mounted screen acceleration transfer data and the road type; A vehicle control module 30, which is used to execute a corresponding screen control plan according to the type of abnormal vibration scenario to protect the vehicle-mounted screen.

[0079] In one embodiment, the data processing module 20 is further configured to obtain vehicle vibration data according to the vehicle driving data, where the vehicle driving data includes real-time acceleration, vehicle attitude angle, and body vibration spectrum; and obtain the road type of the current driving according to the vehicle vibration data and the road condition-vehicle vibration database.

[0080] In one embodiment, the data processing module 20 is further configured to obtain multi-dimensional road test data through multiple rounds of on-vehicle real vehicle tests on roads of a preset type. The multi-dimensional road test data includes vehicle vibration data, road test vehicle speed data, and road visual feature data; extract features from the multi-dimensional road test data to obtain a road vibration feature set, where the road vibration features include transient road features and normal road features; and perform association annotation on the road vibration feature set and the road type corresponding to the road test data to obtain the road condition-vehicle vibration database, where the road condition-vehicle vibration database includes a plurality of road basic vibration feature templates corresponding one-to-one to the road types.

[0081] In one embodiment, the data processing module 20 is further configured to obtain local vibration parameters according to the vehicle-mounted screen acceleration transfer data; perform feature matching between the local vibration parameters and the road basic vibration feature template corresponding to the road type to obtain a matching degree deviation; when the matching degree deviation is greater than the deviation threshold, determine an abnormal vibration component according to the local vibration parameters and the road basic vibration feature template; and obtain the abnormal vibration scenario type according to the abnormal vibration component.

[0082] In one embodiment, the data processing module 20 is further configured to determine a vibration excitation source signal according to the abnormal vibration component. The vibration excitation source signal includes a human-computer interaction excitation signal, a road environment excitation signal, and a gravity vector offset signal; if the vibration excitation source signal satisfies the short-time pulse feature and exceeds the preset human-computer interaction impact threshold, it is determined that the abnormal vibration scenario type is a human touch overload scenario; if the vibration excitation source signal satisfies the low-frequency continuous fluctuation feature, it is determined that the abnormal vibration scenario type is a road harsh condition scenario; if the projection component of the gravitational acceleration in the vibration excitation source signal deviates from the reference value by more than a preset ratio and the duration is greater than the safety threshold, it is determined that the abnormal vibration scenario type is a vehicle body attitude imbalance scenario.

[0083] In one embodiment, the data processing module 20 is further configured to apply multi-point and multi-direction touch behaviors in various working states of the in-vehicle screen, record impact acceleration data, where the working states include an incompletely retracted state, a retraction process state, an unfolding process state, and a normal working state; obtain a touch force-impact acceleration transfer function model according to the force application value, force application direction of the touch behavior, and the impact acceleration data; and determine a preset human-computer interaction impact threshold according to the touch force-impact acceleration transfer function model and the in-vehicle screen usage specifications.

[0084] In one embodiment, when the abnormal vibration scenario type is a human touch overload scenario, the vehicle control module 30 is further configured to generate a user prompt message to remind the user to reduce the touch force; when the abnormal vibration scenario type is a road harsh condition scenario, if the current in-vehicle screen is in the user usage state, activate the hinge damping device to lock the screen position, and if the current in-vehicle screen is in the standby state, automatically retract it into the storage compartment; when the abnormal vibration scenario type is a vehicle body attitude imbalance scenario, adjust the vehicle active safety function to a pre-activated state and automatically retract the in-vehicle screen into the storage compartment.

[0085] This application determines the current road type by obtaining vehicle driving data and in-vehicle screen acceleration transfer data and combining with a road condition vehicle vibration database, and then matches the in-vehicle screen acceleration transfer data with the road type and road vibration characteristic template to identify the current scenario type, such as human touch overload, road harsh conditions, or vehicle body attitude imbalance. According to different scenarios, corresponding screen control plans are executed, such as reminding the user to reduce the touch force, locking the screen position, or automatically retracting the screen into the storage compartment. By the above steps, the risk of screen damage due to vibration is effectively reduced, the service life is extended, and at the same time, the user experience is improved. The intelligent protection mechanism can combine road conditions and vibration data, improve the accuracy of vibration detection, and enhance the stability of the in-vehicle screen under complex working conditions.

[0086] The in-vehicle screen abnormal vibration detection device provided in this application adopts the in-vehicle screen abnormal vibration detection method in the above embodiment, which can solve the technical problem of how to accurately identify vibration scenarios, so as to ensure the stability and safety of the in-vehicle screen under different excitation sources (human touch, road impact, vehicle body imbalance) conditions. Compared with the prior art, the beneficial effects of the in-vehicle screen abnormal vibration detection device provided in this application are the same as those of the in-vehicle screen abnormal vibration detection method provided in the above embodiment, and other technical features in the in-vehicle screen abnormal vibration detection device are the same as those disclosed in the above embodiment method, and will not be elaborated here.

[0087] The present application provides a vehicle-mounted screen abnormal vibration detection device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the vehicle-mounted screen abnormal vibration detection method in Embodiment 1 above.

[0088] Reference is made below Figure 5 , which shows a schematic structural diagram of a vehicle-mounted screen abnormal vibration detection device suitable for implementing the embodiments of the present application. The vehicle-mounted screen abnormal vibration detection device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The vehicle-mounted screen abnormal vibration detection device shown is merely an example and should not impose any limitation on the functions and usage scope of the embodiments of the present application.

[0089] As Figure 5As shown, the in-vehicle screen abnormal vibration detection device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in the ROM (Read Only Memory) 1002 or the program loaded from the storage device 1003 into the RAM (Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the in-vehicle screen abnormal vibration detection device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the in-vehicle screen abnormal vibration detection device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows an in-vehicle screen abnormal vibration detection device having various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems can be alternatively implemented or had.

[0090] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0091] The in-vehicle screen abnormal vibration detection device provided by this application adopts the in-vehicle screen abnormal vibration detection method in the above-mentioned embodiment, which can solve the technical problem of how to accurately identify vibration scenarios, so as to ensure the stability and safety of the in-vehicle screen under different excitation sources (human touch, road impact, vehicle body imbalance). Compared with the prior art, the beneficial effects of the in-vehicle screen abnormal vibration detection device provided by this application are the same as those of the in-vehicle screen abnormal vibration detection method provided by the above-mentioned embodiment, and other technical features in this in-vehicle screen abnormal vibration detection device are the same as those disclosed in the method of the previous embodiment, which will not be elaborated here.

[0092] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0093] As mentioned above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0094] This application provides a computer-readable storage medium with computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the in-vehicle screen abnormal vibration detection method in the above-mentioned embodiment.

[0095] The computer-readable storage medium provided by the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or component. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0096] The above computer-readable storage medium may be included in the in-vehicle screen abnormal vibration detection device; or it may exist independently without being assembled into the in-vehicle screen abnormal vibration detection device.

[0097] The above computer-readable storage medium carries one or more programs. When the above one or more programs are executed by the in-vehicle screen abnormal vibration detection device, the in-vehicle screen abnormal vibration detection device is caused to: obtain vehicle driving data and in-vehicle screen acceleration transfer data; determine the road type according to the vehicle driving data; determine the abnormal vibration scenario type according to the in-vehicle screen acceleration transfer data and the road type; and execute a corresponding screen control plan according to the abnormal vibration scenario type to achieve protection of the in-vehicle screen.

[0098] Computer program code for performing the operations of this application can be written in one or more programming languages or combinations thereof. The above-mentioned programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, by connecting through the Internet using an Internet service provider).

[0099] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functions, and operations of the implementation of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of the code, which contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks can occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0100] The modules described in the embodiments of this application can be implemented in software or in hardware. Among them, the name of the module does not constitute a limitation to the unit itself in some cases.

[0101] The readable storage medium provided by this application is a computer-readable storage medium, and the computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vehicle-mounted screen abnormal vibration detection method, which can solve the technical problem of how to achieve accurate identification of vibration scenarios, so as to ensure the stability and safety of the vehicle-mounted screen under different excitation sources (human touch, road impact, vehicle body imbalance) conditions. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the vehicle-mounted screen abnormal vibration detection method provided by the above embodiments, and will not be elaborated here.

[0102] The computer program product provided by this application can solve the technical problem of vehicle-mounted screen abnormal vibration detection. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as those of the vehicle-mounted screen abnormal vibration detection method provided by the above embodiments, and will not be elaborated here.

[0103] The above are only some embodiments of this application, and thus do not limit the patent scope of this application. Any equivalent structural transformation made under the technical concept of this application by using the content of the specification and drawings of this application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of this application.

Claims

1. A method for detecting abnormal vibration of a vehicle-mounted screen, characterized in that, The vehicle-mounted screen abnormal vibration detection method includes: Obtain vehicle driving data and vehicle-mounted screen acceleration transfer data; Determine the road type according to the vehicle driving data; Determine the abnormal vibration scenario type according to the vehicle-mounted screen acceleration transfer data and the road type; Execute the corresponding screen control plan according to the abnormal vibration scenario type to protect the vehicle-mounted screen.

2. The vehicle-mounted screen abnormal vibration detection method according to claim 1, wherein The step of determining the road type according to the vehicle driving data includes: Obtain the vehicle's overall vibration data according to the vehicle driving data, where the vehicle driving data includes real-time acceleration, vehicle attitude angle, and body vibration spectrum; Obtain the road type of the current driving according to the vehicle's overall vibration data and the road condition-vehicle vibration database.

3. The vehicle-mounted screen abnormal vibration detection method according to claim 2, wherein Before obtaining the road type of the current driving according to the vehicle's overall vibration data and the road condition-vehicle vibration database, it further includes: Obtain multi-dimensional road test data through multiple rounds of real vehicle tests on roads of a preset type. The multi-dimensional road test data includes vehicle's overall vibration data, road test vehicle speed data, and road visual feature data; Extract features from the multi-dimensional road test data to obtain a road vibration feature set. The road vibration features include transient road features and normal road features; Associate and label the road vibration feature set with the road type corresponding to the road test data to obtain the road condition-vehicle vibration database, where the road condition-vehicle vibration database includes multiple road basic vibration feature templates corresponding one-to-one to the road types.

4. The vehicle-mounted screen abnormal vibration detection method according to claim 1, characterized in that, The step of determining the abnormal vibration scenario type according to the vehicle-mounted screen acceleration transfer data and the road type includes: Obtain local vibration parameters according to the vehicle-mounted screen acceleration transfer data; Match the features of the local vibration parameters with the road basic vibration feature template corresponding to the road type to obtain a matching degree deviation; When the matching degree deviation is greater than the deviation threshold, determine the abnormal vibration component according to the local vibration parameters and the road basic vibration feature template; Obtain the abnormal vibration scenario type according to the abnormal vibration component.

5. The vehicle-mounted screen abnormal vibration detection method according to claim 4, wherein, The step of obtaining the abnormal vibration scenario type according to the abnormal vibration component includes: Determine the vibration excitation source signal according to the abnormal vibration component. The vibration excitation source signal includes a human-computer interaction excitation signal, a road environment excitation signal, and a gravity vector offset signal; If the vibration excitation source signal satisfies the short-time pulse feature and exceeds the preset human-computer interaction impact threshold, then determine that the abnormal vibration scenario type is a human touch overload scenario; If the vibration excitation source signal satisfies the low-frequency continuous fluctuation feature, then determine that the abnormal vibration scenario type is a road harsh condition scenario; If the projection component of the gravitational acceleration in the vibration excitation source signal deviates from the reference value by more than a preset ratio and the duration is greater than the safety threshold, then determine that the abnormal vibration scenario type is a vehicle body attitude imbalance scenario.

6. The vehicle-mounted screen abnormal vibration detection method according to claim 5, characterized in that, Before determining the vibration excitation source signal according to the abnormal vibration component, it further includes: Apply multi-point and multi-direction touch behaviors in various working states of the in-vehicle screen, and record the impact acceleration data. The working states include the incompletely retracted state, the retracting process state, the deploying process state, and the normal working state. Obtain a touch force-impact acceleration transfer function model according to the force application value, force application direction of the touch behavior, and the impact acceleration data. Determine a preset human-computer interaction impact threshold according to the touch force-impact acceleration transfer function model and the in-vehicle screen usage specifications.

7. The vehicle-mounted screen abnormal vibration detection method according to claim 1, wherein The corresponding screen control plan is executed according to the abnormal vibration scenario type to protect the in-vehicle screen, including: When the abnormal vibration scenario type is the human touch overload scenario, generate a user prompt message to remind the user to reduce the touch force. When the abnormal vibration scenario type is the road harsh working condition scenario, if the current in-vehicle screen is in the user usage state, activate the hinge damping device to lock the screen position, and if the current in-vehicle screen is in the standby state, automatically retract it into the storage bin. When the abnormal vibration scenario type is the vehicle body attitude imbalance scenario, adjust the vehicle active safety function to the pre-activated state and automatically retract the in-vehicle screen into the storage bin.

8. An in-vehicle screen abnormal vibration detection device, characterized in that, The in-vehicle screen abnormal vibration detection device includes: A data acquisition module for obtaining vehicle driving data and in-vehicle screen acceleration transfer data. A data processing module for determining the road type according to the vehicle driving data. The data processing module is also used to determine the abnormal vibration scenario type according to the in-vehicle screen acceleration transfer data and the road type. A vehicle control module for executing the corresponding screen control plan according to the abnormal vibration scenario type to protect the in-vehicle screen.

9. An in-vehicle screen abnormal vibration detection device, characterized in that, The in-vehicle screen abnormal vibration detection device includes: a memory, a processor, and an in-vehicle screen abnormal vibration detection program stored on the memory and executable on the processor. The in-vehicle screen abnormal vibration detection program is configured to implement the steps of the in-vehicle screen abnormal vibration detection method according to any one of claims 1 to 7.

10. A storage medium, characterized in that, An in-vehicle screen abnormal vibration detection program is stored on the storage medium. When the in-vehicle screen abnormal vibration detection program is executed by the processor, it implements the steps of the in-vehicle screen abnormal vibration detection method according to any one of claims 1 to 7.

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