Vehicle control method, control system and vehicle

Abstract

The invention provides a vehicle control method and system and a vehicle. The vehicle comprises a chassis, a cab, a chassis height adjusting device connected with the chassis, a cab height adjusting device connected with the cab and a control system. The chassis height adjusting device and the cab height adjusting device are electrically connected with the control system, and the control method is applied to the control system and comprises the steps that the running speed of a vehicle is obtained; the chassis and the cab are independently controlled to adjust the height according to the running speed of the vehicle. When the running speed of the vehicle is larger than the first speed threshold value and smaller than the second speed threshold value, the chassis is controlled to be at the first chassis height, and the cab height of the vehicle is controlled to be at the first cab height; when the running speed of the vehicle is larger than or equal to the second speed threshold value, the chassis height of the vehicle is controlled to be at the second chassis height, and the cab height of the vehicle is controlled to be at the second cab height. The first chassis height is larger than the second chassis height, and the first cab height is larger than the second cab height.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle control method, a control system, and a vehicle. Background Art

[0002] As demands for vehicle performance and ease of use continue to rise, vehicle adaptability and comfort are becoming increasingly important research areas. Common vehicles have a fixed vehicle height, making it impossible to adjust the height based on actual driving conditions. This results in vehicle operating conditions not meeting actual operating requirements. Some related technologies incorporate a vehicle height adjustment device, allowing users to manually set or adjust the vehicle height. This improves vehicle control flexibility, but the accuracy of the control is limited. Summary of the Invention

[0003] The present application provides a vehicle control method, a control system, and a vehicle to improve the accuracy of vehicle control.

[0004] The present application provides a method for controlling a vehicle, the vehicle comprising: a chassis, a cab, a chassis height adjustment device connected to the chassis, a cab height adjustment device connected to the cab, and a control system, wherein the chassis height adjustment device and the cab height adjustment device are electrically connected to the control system, respectively, and the control method is applied to the control system; the control method comprises: obtaining a driving speed of the vehicle; independently controlling the chassis and cab to adjust heights according to the driving speed of the vehicle; wherein, when the driving speed of the vehicle is greater than a first speed threshold and less than a second speed threshold, the chassis is controlled to be at a first chassis height, and the cab height of the vehicle is controlled to be at a first cab height; when the driving speed of the vehicle is greater than or equal to the second speed threshold, the chassis height of the vehicle is controlled to be at a second chassis height, and the cab height of the vehicle is controlled to be at a second cab height; the first chassis height is greater than the second chassis height, and the first cab height is greater than the second cab height.

[0005] Optionally, the control method also includes: when the vehicle's driving speed is less than a third speed threshold, obtaining the vehicle's operating status data; the operating status data includes at least one of door status data for characterizing the door opening and closing status, power system status data for characterizing the start and stop status of the power system in the vehicle, and occupant status data for characterizing the occupant position; when the operating status data meets the occupant entry and exit conditions, controlling the vehicle's chassis height to be at a third chassis height, and controlling the vehicle's cab height to be at a third cab height; wherein, the third chassis height is less than the second chassis height, and the third cab height is less than the second cab height.

[0006] Optionally, the vehicle's operating status data includes door status data; when the operating status data meets the passenger entry and exit conditions, the vehicle's chassis height is controlled to be at a third chassis height, and the vehicle's cab height is controlled to be at a third cab height, including: when the door status data indicates that the door is in an open state, the vehicle's chassis height is controlled to be at a third chassis height, and the vehicle's cab height is controlled to be at a third cab height.

[0007] Optionally, the vehicle's operating status data includes power system status data and occupant status data; when the operating status data meets the occupant entry and exit conditions, the vehicle's chassis height is controlled to be at a third chassis height, and the vehicle's cab height is controlled to be at a third cab height, including: when the occupant status data indicates that there are occupants in the vehicle and the power system status data indicates that the power system stops running, the vehicle's chassis height is controlled to be at the third chassis height, and the vehicle's cab height is controlled to be at the third cab height.

[0008] Optionally, the control method further includes: obtaining driving road condition information of the vehicle; and controlling the chassis height of the vehicle to increase when the driving road condition information meets a severe road condition.

[0009] Optionally, the driving road condition information includes driving acceleration; when the driving road condition information meets the severe road condition conditions, the chassis height of the vehicle is controlled to increase, including: determining an acceleration threshold according to the driving speed; the acceleration threshold is positively correlated with the driving speed; when the driving acceleration is greater than the acceleration threshold, the chassis height of the vehicle is controlled to increase.

[0010] Optionally, the control method further includes: in response to a vehicle maintenance demand, controlling the chassis height of the vehicle to be lowered, and controlling the cab height of the vehicle to be raised.

[0011] Optionally, the control method further includes: in response to a height limit requirement, controlling the vehicle's cab height to be lowered so that the maximum height of the cab is lower than a height threshold corresponding to the height limit requirement.

[0012] The present application provides a vehicle control system, comprising a chassis, a cab, a chassis height adjustment device connected to the chassis, and a cab height adjustment device connected to the cab; a control system electrically connected to the chassis height adjustment device and the cab height adjustment device, respectively. The control system is configured to execute the aforementioned vehicle control method.

[0013] The present application provides a vehicle, comprising: a chassis; a cab; a chassis height adjustment device connected to the chassis; a cab height adjustment device connected to the cab; and the aforementioned control system, electrically connected to the chassis height adjustment device and the cab height adjustment device, respectively.

[0014] The vehicle control method and vehicle provided herein automatically determine the vehicle's actual speed during use and independently adjust the heights of the vehicle chassis and cab based on the speed. This allows the heights of the chassis and cab to be adaptively adjusted in real time based on the vehicle's actual speed, effectively improving the accuracy of vehicle operation control. Furthermore, if the vehicle's speed is greater than a first speed threshold and less than a second speed threshold, i.e., in a low-speed operating condition, the chassis and cab heights are adjusted to higher positions, respectively, effectively improving the vehicle's maneuverability. If the vehicle's speed is greater than or equal to the second speed threshold, i.e., in a high-speed operating condition, the chassis and cab heights are adjusted to lower positions, lowering the vehicle's center of gravity and improving its driving stability. Thus, through this speed threshold-based segmented height adjustment strategy, the vehicle can automatically switch to different height states based on different speeds, further improving the accuracy of vehicle operation control. Furthermore, no manual driver intervention is required, which not only helps reduce the driver's operational burden. In addition, the chassis height and cab height can be controlled independently. Compared with the technical solution that can only control the overall height of the vehicle body, it has greater flexibility and can be used to meet the different control requirements of the vehicle, which is conducive to further improving the accuracy of vehicle operation control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the architecture of a vehicle provided by one embodiment of the present application;

[0016] Figure 2 is a schematic diagram of the architecture of a vehicle provided by another embodiment of the present application;

[0017] Figure 3 is a schematic diagram of a vehicle control method provided by an embodiment of the present application;

[0018] Figure 4 is a schematic diagram of a vehicle control method provided by another embodiment of the present application;

[0019] Figure 5 It is a schematic diagram of a vehicle control method provided by another embodiment of the present application.

[0020] Reference numerals

[0021] 11: Chassis; 110: Chassis height adjustment device; 21: Cab; 210: Cab height adjustment device; 31: Control system;

[0022] 10: Demand acquisition module; 101: CAN bus; 102: Acceleration sensor; 103: Door switch; 104: Power system; 20: Demand processing and calculation module; 30: Control execution module; 301: Intelligent suspension controller; 302: Chassis air spring; 303: Cabin air spring. DETAILED DESCRIPTION

[0023] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings.

[0024] Combine Figure 1 As shown, an embodiment of the present application provides a vehicle, including a chassis 11, a cab 21, a chassis height adjustment device 110, a cab height adjustment device 210 and a control system 31. The chassis height adjustment device 110 is connected to the chassis 11, the cab height adjustment device 210 is connected to the cab 21, the chassis 11 and the cab 21 are connected to each other, and the height of the chassis 11 and the height of the cab 21 can be independently controlled. Specifically, the chassis height adjustment device 110 and the cab height adjustment device 220 are respectively electrically connected to the control system, the control system controls the chassis height adjustment device 110 to achieve height control of the chassis 11, and the control system controls the cab height adjustment device 220 to achieve height control of the cab 21. The chassis height adjustment device 110 is, for example, a chassis air spring arranged on the chassis, and the cab height adjustment device 210 is, for example, a cab air spring arranged on the cab. In some embodiments, the vehicle here is a commercial vehicle for logistics.

[0025] The chassis 11 and cab 21 can be configured in either a fixed mode (non-adjustable) or an adjustable mode (adjustable). When the adjustable mode is active, an indicator light appears on the vehicle's instrument panel. When the adjustable mode is off, the indicator light disappears. This makes it easier for users to understand the vehicle's current mode.

[0026] In some embodiments, a vehicle includes a speed acquisition device for acquiring the vehicle's speed. Specifically, in some embodiments, the vehicle's CAN bus serves as the speed acquisition device, reading the vehicle's speed signal via the CAN bus to determine the vehicle's speed. In some embodiments, the speed acquisition device includes a speed sensor disposed on the vehicle. The speed sensor provides real-time speed monitoring.

[0027] In some embodiments, a vehicle includes a driving acceleration acquisition device for acquiring the vehicle's driving acceleration. Specifically, in some embodiments, the driving acceleration acquisition device includes an acceleration sensor. The acceleration sensor can be installed on the guide rail of the driver's seat in the vehicle. This can accurately sense the acceleration of the seat in all directions, ensuring the accuracy of acceleration monitoring.

[0028] Here combined Figure 2 In some embodiments, the vehicle includes a demand collection module 10, a demand processing and calculation module 20, and a control execution module 30. The aforementioned control system includes the demand processing and calculation module 20.

[0029] Among them, the demand acquisition module 10 includes a CAN bus 101, an acceleration sensor 102, a door switch 103, and a power system 104. The CAN bus 101 reads the vehicle's speed signal, and the vehicle's driving speed can be determined based on the speed signal. The acceleration sensor 102 is arranged at the guide rail of the vehicle's main driver's seat, and can sense the acceleration of the seat in all directions to determine the driving acceleration, and the driving acceleration can reflect the road conditions. The door switch 103 provides a door switch signal, and the door status data can be determined based on the door switch signal. The power system 104 here, for example, provides an engine start-stop signal for the engine or high-voltage circuit engine, and the power system status data can be determined based on the engine start-stop signal. Among them, in the case where the vehicle is an electric vehicle, the engine start-stop signal is replaced by the vehicle's high-voltage circuit start-stop signal. All of the above signals can be transmitted externally through the chassis CAN communication.

[0030] The demand processing and calculation module 20 is a system processor that includes a signal receiver and a signal transmitter, enabling signal transmission and reception. Based on the data input from the demand acquisition module, the demand processing and calculation module performs internal logic calculations to determine the chassis height and cab height values, and outputs these values ​​to the control execution module.

[0031] The control execution module 30 includes an intelligent suspension controller 301, chassis air springs 302, and cab air springs 303. The control execution module 30 also includes a signal receiver and a signal transmitter for signal transmission and reception. The control execution module 30 processes the chassis height and cab height output from the calculation module 20 based on demand, and controls the chassis air springs 302 and cab air springs 303 in real time to adjust the chassis and cab heights to maintain them at the appropriate heights. The chassis air springs 302 and cab air springs 303 provide feedback signals to the intelligent suspension controller 301 to determine the real-time chassis and cab heights.

[0032] Combine Figure 3 As shown, an embodiment of the present application provides a vehicle control method for controlling the aforementioned vehicle, and the control method includes steps S10 to S20.

[0033] In at least some embodiments, the vehicle control method is applied to a vehicle control system.

[0034] Step S10: Obtain the vehicle's travel speed.

[0035] Step S20, independently controlling the chassis and cab to adjust heights according to the vehicle's driving speed; wherein, when the vehicle's driving speed is greater than a first speed threshold and less than a second speed threshold, the chassis is controlled to be at a first chassis height, and the cab height of the vehicle is controlled to be at a first cab height; when the vehicle's driving speed is greater than or equal to the second speed threshold, the chassis height of the vehicle is controlled to be at a second chassis height, and the cab height of the vehicle is controlled to be at a second cab height; the first chassis height is greater than the second chassis height, and the first cab height is greater than the second cab height.

[0036] Using the vehicle control method provided in the embodiments of the present application, the vehicle's actual speed is automatically determined, and the heights of the vehicle chassis and cab are independently adjusted based on the speed. This allows the heights of the vehicle chassis and cab to be adaptively adjusted in real time based on the vehicle's actual speed, effectively improving the accuracy of vehicle operation control. Furthermore, if the vehicle's speed is greater than a first speed threshold and less than a second speed threshold, i.e., when in a low-speed operating condition, the heights of the chassis and cab are adjusted to higher positions, respectively, effectively improving the vehicle's passability. If the vehicle's speed is greater than or equal to the second speed threshold, i.e., when in a high-speed operating condition, the heights of the chassis and cab are adjusted to lower positions, lowering the vehicle's center of gravity and improving vehicle stability. Thus, through this speed threshold-based segmented height adjustment strategy, the vehicle can automatically switch to different height states based on different speeds, further improving the accuracy of vehicle operation control. At the same time, no manual intervention by the driver is required, which not only helps reduce the driver's operational burden.

[0037] A vehicle's speed is often correlated with current road conditions. If the vehicle's speed is greater than the first speed threshold and less than the second speed threshold, indicating low-speed operation, road conditions are often poor, requiring a lower speed for safe driving. In this case, adjusting the chassis and cab heights to higher positions can effectively improve the vehicle's maneuverability, enabling it to navigate complex road conditions such as uneven surfaces or obstacles. A higher cab height also provides the driver with a better field of view, further enhancing driving safety. If the vehicle's speed is greater than or equal to the second speed threshold, indicating high-speed operation, road conditions are often favorable, requiring a higher chassis and cab height for safe driving. Adjusting the chassis and cab heights to lower positions can lower the vehicle's center of gravity, improve driving stability, and reduce air resistance during driving, thereby improving fuel economy.

[0038] In addition, the technical solution provided in the embodiment of the present application can independently control the chassis height and the cab height. Compared with the technical solution that can only control the overall height of the vehicle body, it has greater flexibility and can be used to meet the different control requirements of the vehicle, which is conducive to further improving the accuracy of vehicle operation control.

[0039] During implementation, the first and second speed thresholds can be pre-set based on actual needs. More specifically, in some embodiments, the low-speed mode is defined as the chassis at a first chassis height and the cab height at a first cab height; the high-speed mode is defined as the chassis at a second chassis height and the cab height at a second cab height. The first speed threshold is used as the activation speed for the low-speed mode, and the second speed threshold is used as the activation speed for the high-speed mode. When the current vehicle speed reaches the activation speed, the mode corresponding to the activation speed is automatically triggered.

[0040] In some embodiments, it can be understood that the aforementioned adjustment of the vehicle's chassis height and cab height based on the vehicle's driving speed includes: when the vehicle's driving speed is greater than a first speed threshold and less than a second speed threshold, controlling the chassis to a first chassis height and controlling the vehicle's cab height to the first cab height. When the vehicle's driving speed is greater than or equal to the second speed threshold, controlling the vehicle's chassis height to a second chassis height and controlling the vehicle's cab height to the second cab height. The first chassis height is greater than the second chassis height, and the first cab height is greater than the second cab height.

[0041] Combine Figure 4 As shown, an embodiment of the present application provides a vehicle control method for controlling the aforementioned vehicle, and the control method includes steps S10 to S32.

[0042] Step S10: obtaining the vehicle's travel speed.

[0043] Step S20: independently controlling the chassis and the cab to adjust their heights according to the vehicle's speed.

[0044] Step S31: When the vehicle's speed is less than a third speed threshold, vehicle operating status data is obtained. The operating status data includes at least one of door status data representing door opening and closing conditions, power system status data representing power system start / stop conditions in the vehicle, and occupant status data representing occupant positions.

[0045] The occupant status data may be determined by an image sensor disposed inside and / or outside the vehicle, such as a camera.

[0046] Step S32: When the operating status data meets the passenger entry and exit conditions, the chassis height of the vehicle is controlled to be at a third chassis height, and the cab height of the vehicle is controlled to be at a third cab height.

[0047] The third chassis height is the chassis height of the vehicle during normal driving when passengers do not need to enter or exit the vehicle, and the third cab height is the cab height of the vehicle during normal driving when passengers do not need to enter or exit the vehicle. The third chassis height is lower than the second chassis height, and the third cab height is lower than the second cab height.

[0048] When the vehicle's speed is less than a third speed threshold, i.e., the vehicle's speed is low, the system obtains operating status data. By determining whether the operating status data meets the requirements for passenger entry and exit, it can determine whether a passenger needs to board or exit the vehicle. If the operating status data meets the requirements, the chassis height is adjusted to a third chassis height, which is lower than both the low-speed and high-speed modes, and the cab height is adjusted to a third cab height, which is lower than both the low-speed and high-speed modes. This provides greater convenience for passengers boarding and exiting the vehicle, improving comfort and convenience, and contributing to enhanced vehicle intelligence, overall comfort, and user experience.

[0049] During implementation, a third speed threshold can be pre-set based on actual needs. Regarding the value range of the third speed threshold, in some embodiments, the third speed threshold is less than the second speed threshold. In some embodiments, the third speed threshold is less than or equal to the first speed threshold. In some embodiments, the third speed threshold is equal to the first speed threshold. In some embodiments, the third speed threshold is less than the first speed threshold. More specifically, in some embodiments, the third speed threshold is set as the parameters of the chassis at a third chassis height and the cab height at a third cab height as the welcome mode. The third speed threshold is used as the exit speed for the low-speed mode. When the current vehicle speed reaches this exit speed, the welcome mode is exited. At this point, the driving speed is already high, and it is assumed that no passenger entry or exit is required. In some embodiments, the vehicle's operating status data includes door status data. If the operating status data meets the passenger entry and exit conditions, the vehicle's chassis height is controlled to the third chassis height and the cab height is controlled to the third cab height. This includes: if the door status data indicates that the door is open, the vehicle's chassis height is controlled to the third chassis height and the cab height is controlled to the third cab height. If the door status data indicates that the door is open, it is determined that there is a passenger entering or exiting the vehicle. The vehicle's chassis height is controlled to the third chassis height, and the cab height is controlled to the third cab height. This reduces bending and leg lifting when entering and exiting the vehicle, improving comfort and convenience. Furthermore, height adjustment can be achieved through simple door status detection, eliminating the need for complex sensors or manual operation, further enhancing the vehicle's intelligence and optimizing the user experience.

[0050] In some embodiments, the vehicle's operating status data includes powertrain status data and occupant status data. If the operating status data meets occupant entry and exit conditions, the vehicle's chassis height is controlled to a third chassis height and the vehicle's cab height is controlled to a third cab height. This includes: if the occupant status data indicates that there are occupants in the vehicle and the powertrain status data indicates that the powertrain is stopped, the vehicle's chassis height is controlled to the third chassis height and the vehicle's cab height is controlled to the third cab height. The powertrain herein includes an engine or high-voltage circuit. By comprehensively considering the occupant status and powertrain status, it is possible to more accurately determine whether a occupant is in or out of the vehicle and whether there is a need for onboard or offboarding. When the vehicle is off and there are occupants in the vehicle, a welcome mode is automatically triggered, lowering the chassis and cab height to their lowest level to maximize occupant entry and exit convenience. This multi-conditional welcome mode not only enhances the vehicle's intelligence but also prevents false triggering, further enhancing the vehicle's intelligence and optimizing the user experience.

[0051] In some embodiments, when the vehicle's speed is less than a third speed threshold, vehicle operating status data is obtained. If the operating status data meets occupant entry and exit conditions, the vehicle's chassis height is controlled to a third chassis height, and the vehicle's cab height is controlled to a third cab height, including obtaining occupant status data. If the occupant status data indicates that there are no occupants in the vehicle, door status data is obtained. If the door status data indicates that the doors are open, the vehicle's chassis height is controlled to the third chassis height, and the vehicle's cab height is controlled to the third cab height. If the occupant status data indicates that there are occupants in the vehicle, door status data and power system status are obtained. If the door status data indicates that the doors are open, or if the power system status data indicates that the power system is stopped, the vehicle's chassis height is controlled to the third chassis height, and the vehicle's cab height is controlled to the third cab height. In this way, if there are occupants in the vehicle, either the door being open or the power system being stopped can trigger the welcome mode, which helps improve the timeliness of triggering the welcome mode.

[0052] Combine Figure 5 As shown, an embodiment of the present application provides a vehicle control method for controlling the aforementioned vehicle, and the control method includes steps S10 to S42.

[0053] Step S10: obtaining the vehicle's travel speed.

[0054] Step S20: independently controlling the chassis and the cab to adjust their heights according to the vehicle's speed.

[0055] Step S41: Obtain the vehicle's driving road condition information.

[0056] Step S42: When the driving road condition information satisfies a severe road condition, the chassis height of the vehicle is controlled to be raised.

[0057] By monitoring road conditions in real time, the vehicle automatically identifies adverse road conditions, such as uneven surfaces or obstacles, and promptly adjusts the chassis height to improve maneuverability. This precise control of the vehicle's chassis height helps prevent scrapes or collisions, thereby enhancing safety and stability in adverse road conditions. Furthermore, this process eliminates the need for manual driver intervention, improving driving comfort and convenience.

[0058] Specifically, in some embodiments, the chassis height of the vehicle is controlled to be raised in the case that the driving road condition information meets the adverse road condition condition, comprising: in the case that the driving road condition information meets the adverse road condition condition and the current chassis height is less than the fourth chassis height, the chassis height of the vehicle is controlled to be raised. On the basis of the driving road condition information meeting the adverse road condition condition, it is further judged whether the current chassis height is lower than the set fourth chassis height. If it is lower than the threshold value, the system will automatically raise the chassis height to ensure that the vehicle can smoothly pass through the complex road condition and avoid chassis scratching or collision, thereby improving the passability and safety of the vehicle. If it is greater than or equal to the fourth chassis height threshold value, the chassis of the vehicle does not need to be continuously raised. In this way, unnecessary raising of the chassis height can be effectively avoided. In some embodiments, the fourth chassis height is greater than or equal to the first chassis height.

[0059] In some embodiments, the driving road condition information includes driving acceleration. In the case that the driving road condition information meets the adverse road condition condition, the chassis height of the vehicle is controlled to be raised, comprising: determining an acceleration threshold value according to the driving speed; the acceleration threshold value is positively correlated with the driving speed; in the case that the driving acceleration is greater than the acceleration threshold value, the chassis height of the vehicle is controlled to be raised. By combining the driving acceleration with the driving speed, the acceleration threshold value is dynamically set and the chassis height is controlled to be raised, which realizes accurate identification of adverse road conditions. The higher the driving speed, the greater the set acceleration threshold value, which is conducive to ensuring that the vehicle does not be mistakenly raised in the case of good road conditions at high speed, thereby affecting the stability and fuel economy of the vehicle. At the same time, the lower the driving speed, the lower the acceleration threshold value, which can timely raise the chassis in the case of poor road conditions at low speed, thereby enhancing the passability and reducing the risk of chassis scratching. In this way, by combining the driving acceleration with the driving speed, the acceleration threshold value is dynamically set and the chassis height is controlled to be raised, thereby further improving the accuracy of vehicle operation control.

[0060] For example, it is set that: in the case that the driving speed of the vehicle reaches a first speed, if the acceleration reaches a second acceleration, the chassis height of the vehicle is controlled to be raised. In the case that the driving speed of the vehicle reaches a second speed, if the acceleration reaches a first acceleration, the chassis height of the vehicle is controlled to be raised. In the case that the driving speed of the vehicle reaches a third speed, if the acceleration reaches a third acceleration, the chassis height of the vehicle is controlled to be raised. Wherein, the first speed is greater than the second speed, and the second speed is greater than the third speed. The first acceleration is greater than the second acceleration, and the second acceleration is greater than the third acceleration. In the implementation process, it can be segmented according to actual needs, which will not be listed one by one here.

[0061] Furthermore, in some embodiments, the amount of chassis height increase can be determined based on driving acceleration. The amount of chassis height increase is positively correlated with the difference between driving acceleration and an acceleration threshold. That is, the greater the difference between the vehicle's driving acceleration and the acceleration threshold, the greater the amount of chassis height increase.

[0062] In some embodiments, the control method further includes: controlling the vehicle's chassis height to be lowered and controlling the vehicle's cab height to be raised in response to a vehicle maintenance request. When the vehicle requires maintenance, lowering the chassis height and raising the cab height increase the distance between the cab and chassis, thereby providing a larger maintenance space. This provides maintenance personnel with more operating space and facilitates repairs and inspections of the vehicle's chassis and cab components. This improves the vehicle's maintainability. The vehicle maintenance request can be user-inputted or automatically determined by the vehicle. Specifically, the user can input the vehicle maintenance request via an input device connected to a processor in the vehicle to avoid false triggering of adjustments to the chassis height and cab height. Furthermore, controlling the vehicle's chassis height to be raised and controlling the vehicle's cab height to be lowered in response to a vehicle maintenance request includes: controlling the vehicle's chassis height to be lowered to its lowest height and controlling the vehicle's cab height to be raised to its highest height in response to the vehicle maintenance request. This provides the largest possible maintenance space, facilitating vehicle maintenance by maintenance personnel.

[0063] In some embodiments, the control method further includes: in response to a height restriction requirement, controlling the vehicle's cab height to be lowered so that the maximum cab height is below a height threshold corresponding to the height restriction requirement. By lowering the cab height to meet the height restriction requirement, the vehicle can avoid collisions when passing through height restriction bars or other low obstacles, ensuring safe passage. This not only improves the vehicle's maneuverability but also reduces the risk of vehicle damage from collisions, thereby enhancing vehicle safety and reliability. Furthermore, automated height adjustment reduces the driver's operational burden and improves driving convenience and comfort. The cab height and chassis height adjustments are independent of each other, allowing the user to adjust the cab height and chassis height as needed, and the driver can freely set the cab and chassis height adjustment values. For example, when passing through a height restriction bar on poor road conditions, the chassis height can be raised to improve vehicle maneuverability while lowering the cab height to avoid colliding with the height restriction bar.

[0064] In some embodiments, in response to a height restriction request, the vehicle's cab height is controlled to be lowered so that the cab's maximum height is below a height threshold corresponding to the height restriction request. This includes: in response to the height restriction request, if the cab's current maximum height is greater than or equal to the height threshold corresponding to the height restriction request, controlling the vehicle's cab height to be lowered until the cab's maximum height is below the height threshold corresponding to the height restriction request. This helps avoid unnecessary height adjustments, saving energy and unnecessary mechanical wear.

[0065] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] In the description of this application, it should be understood that the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first," "second," etc. may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

Claims

1. A vehicle control method, characterized in that: The vehicle comprises: a chassis, a cab, a chassis height adjustment device connected to the chassis, a cab height adjustment device connected to the cab, and a control system, wherein the chassis height adjustment device and the cab height adjustment device are respectively electrically connected to the control system, and the control method is applied to the control system; The control method includes: Obtaining the driving speed of the vehicle; According to the driving speed of the vehicle, the chassis and the cab are independently controlled to adjust their heights; Among them, when the driving speed of the vehicle is greater than the first speed threshold and less than the second speed threshold, the chassis is controlled to be at the first chassis height, and the cab height of the vehicle is controlled to be at the first cab height; when the driving speed of the vehicle is greater than or equal to the second speed threshold, the chassis height of the vehicle is controlled to be at the second chassis height, and the cab height of the vehicle is controlled to be at the second cab height; the first chassis height is greater than the second chassis height, and the first cab height is greater than the second cab height.

2. The control method according to claim 1, characterized in that: The control method further includes: obtaining, when the vehicle's travel speed is less than a third speed threshold, operating state data of the vehicle; the operating state data comprising at least one of door state data representing a door opening and closing condition, power system state data representing a power system start / stop condition in the vehicle, and occupant state data representing an occupant's position; When the operating state data meets the passenger entry and exit conditions, controlling the chassis height of the vehicle to be at a third chassis height, and controlling the cab height of the vehicle to be at a third cab height; Among them, the third chassis height is smaller than the second chassis height, and the third cab height is smaller than the second cab height.

3. The control method according to claim 2, characterized in that: The vehicle operation status data includes the vehicle door status data; When the operating state data meets the passenger entry and exit conditions, controlling the chassis height of the vehicle to be at a third chassis height and controlling the cab height of the vehicle to be at a third cab height includes: When the door status data indicates that the door is in an open state, the chassis height of the vehicle is controlled to be at a third chassis height, and the cab height of the vehicle is controlled to be at a third cab height.

4. The control method according to claim 2, characterized in that: The vehicle operation status data includes the power system status data and the passenger status data; When the operating state data meets the passenger entry and exit conditions, controlling the chassis height of the vehicle to be at a third chassis height and controlling the cab height of the vehicle to be at a third cab height includes: When the occupant status data indicates that there are occupants in the vehicle and the power system status data indicates that the power system stops running, the chassis height of the vehicle is controlled to be at a third chassis height, and the cab height of the vehicle is controlled to be at a third cab height.

5. The control method according to claim 1, characterized in that: The control method further includes: Obtaining driving road condition information of the vehicle; When the driving road condition information satisfies a severe road condition, the chassis height of the vehicle is controlled to increase.

6. The control method according to claim 5, characterized in that: The driving road condition information includes driving acceleration; When the driving road condition information satisfies a severe road condition, controlling the chassis height of the vehicle to rise includes: determining an acceleration threshold according to the driving speed; the acceleration threshold is positively correlated with the driving speed; When the driving acceleration is greater than the acceleration threshold, the chassis height of the vehicle is controlled to increase.

7. The control method according to claim 1, characterized in that: The control method further includes: In response to a vehicle maintenance requirement, a chassis height of the vehicle is controlled to be lowered, and a cab height of the vehicle is controlled to be raised.

8. The control method according to claim 1, characterized in that: The control method further includes: In response to a height restriction requirement, the height of the cab of the vehicle is controlled to be lowered so that the maximum height of the cab is lower than a height threshold corresponding to the height restriction requirement.

9. A vehicle control system, characterized in that: The vehicle comprises a chassis, a cab, a chassis height adjustment device connected to the chassis, and a cab height adjustment device connected to the cab; The control system is electrically connected to the chassis height adjustment device and the cab height adjustment device, respectively, and the control system is used to execute the vehicle control method according to any one of claims 1 to 8.

10. A vehicle, characterized in that: include: chassis; cab; a chassis height adjustment device connected to the chassis; a cab height adjustment device connected to the cab; and The control system according to claim 9 is electrically connected to the chassis height adjustment device and the cab height adjustment device, respectively.

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