Air suspension leveling method, device, equipment and storage medium

Abstract

The present invention discloses an air suspension leveling method, device, equipment, and storage medium. The method includes the following steps: determining whether an emergency leveling function is triggered based on at least the state of the vehicle's air suspension compressor and the height difference of the wheels; if the emergency leveling function is triggered, selecting a control strategy based on the vehicle speed condition to control the air spring to vent to the atmosphere, thereby lowering the air spring height to adjust the vehicle body air suspension, wherein different control strategies correspond to different vehicle speed conditions. This application can ensure the most basic leveling function and driving safety when a compressor component fails, while also selecting different adjustment strategies for different operating conditions to ensure driver and passenger safety.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to an air suspension leveling method, device, equipment and storage medium. Background Art

[0002] An air suspension system uses compressed air as an elastic medium to achieve an elastic connection between the vehicle body and wheels. An air suspension system primarily consists of a compressor, distribution valve, air reservoir, air springs, and other related components, such as height sensors and controllers. For example, in an open air suspension, during the ascent phase, the compressor pressurizes the air from the atmosphere and the air reservoir, then fills the air springs with air, causing the vehicle body to rise. If the air reservoir pressure is too low, the system will inflate the air springs at an opportune moment during idle time. Higher air reservoir pressure reduces the ascent time of the air suspension system. During the descent phase, the compressor is deactivated, and the system directly vents the high-pressure air in the air springs to the atmosphere. As shown above, if the compressor fails to build pressure, the ascent function is severely affected, while the descent function generally remains functional. While closed air suspension systems operate somewhat differently from open air suspensions, they also achieve the same functionality: if the compressor fails to build pressure, the air is vented directly to the atmosphere, lowering the air spring height and adjusting the vehicle's posture.

[0003] Currently, in the existing technology, a method of controlling the vehicle body height is adopted using a compressor, but its disadvantage is that once the compressor fails, the vehicle body posture cannot be adjusted and driving safety cannot be guaranteed.

[0004] Therefore, how to adjust the vehicle body posture in the event of a compressor failure is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The main purpose of the present invention is to provide an air suspension leveling method, device, equipment and storage medium, which can ensure the most basic leveling function and driving safety when a compressor component fails. At the same time, different adjustment strategies can be selected for different working conditions to ensure driving safety.

[0006] In a first aspect, the present application provides an air suspension leveling method, wherein the method comprises the steps of:

[0007] determining whether to trigger an emergency leveling function based on at least a status of an air suspension compressor of the vehicle and a height difference of the wheels;

[0008] If the emergency leveling function is triggered, the control strategy is selected based on the vehicle speed condition to control the air spring to exhaust air to the atmosphere, so as to lower the height of the air spring to adjust the vehicle body air suspension. Different control strategies correspond to different vehicle speed conditions.

[0009] In conjunction with the first aspect above, as an optional implementation, if it is determined that the vehicle is in a high-speed operating condition, the height values ​​measured by multiple wheel height sensors are obtained, and the current lowest height value among the multiple wheels is used as the target height adjustment;

[0010] The air in the air springs corresponding to the remaining wheels except the target is discharged to the atmosphere to adjust the height of the remaining wheels to the target height to reduce the air spring height.

[0011] In combination with the first aspect above, as an optional implementation method, the heights of the remaining wheels are adjusted in stages according to preset height levels until the target adjustment height is reached.

[0012] In combination with the first aspect above, as an optional implementation method, if it is determined that the vehicle is in a low-speed condition, the gas in the air springs corresponding to the coaxial left and right wheels of the vehicle is discharged to the atmosphere so that the height of the coaxial left and right wheels is adjusted to a relatively balanced position.

[0013] In combination with the first aspect above, as an optional implementation method, detecting the average height difference between the front and rear axles of the vehicle;

[0014] If the average height difference between the front and rear axles of the vehicle is greater than the set range, exhaust treatment is performed on the side with the higher height value to ensure that the average height difference between the front and rear axles is within the set range.

[0015] In combination with the first aspect above, as an optional implementation method, after the emergency leveling operation is completed, the height of the vehicle air suspension is adjusted to the target height according to the speed range of the vehicle, where different speed ranges correspond to different target heights.

[0016] In combination with the first aspect above, as an optional implementation, at least detecting whether the vehicle air suspension compressor is in a pressure buildup fault state;

[0017] Detect whether the height difference between any two wheels of the vehicle is greater than the set threshold;

[0018] If the vehicle's air suspension compressor is detected to have a pressure buildup failure and no other equipment detects a fault, and the height difference between any two wheels of the vehicle is greater than the set threshold, the emergency leveling function will be triggered; if any of the above conditions is not met, the emergency leveling function will not be triggered.

[0019] In combination with the first aspect above, as an optional implementation, the other devices include: a distribution valve, an air storage tank, an air spring height sensor, and a controller.

[0020] In a second aspect, the present application provides an air suspension leveling device, the device comprising:

[0021] a determination module, configured to determine whether to trigger an emergency leveling function based at least on a state of an air suspension compressor of the vehicle and a height difference of the wheels;

[0022] The adjustment module is used to select a control strategy based on the vehicle speed condition to control the air spring to vent air to the atmosphere if the emergency leveling function is triggered, so as to reduce the height of the air spring to adjust the vehicle body air suspension. Different control strategies correspond to different vehicle speed conditions.

[0023] In a third aspect, the present application further provides an electronic device comprising: a processor; and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0024] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any one of the methods described in the first aspect.

[0025] This application provides an air suspension leveling method, apparatus, device, and storage medium, wherein the method includes the steps of: determining whether an emergency leveling function is triggered based on at least the state of the vehicle's air suspension compressor and the height difference of the wheels; if the emergency leveling function is triggered, selecting a control strategy based on the vehicle speed condition to control the air spring to vent to the atmosphere, thereby lowering the air spring height and adjusting the vehicle body air suspension, wherein different control strategies correspond to different vehicle speed conditions. This application can ensure the most basic leveling function and driving safety in the event of a compressor component failure, while also selecting different adjustment strategies for different operating conditions to ensure driver and passenger safety.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 This is a flow chart of an air suspension leveling method provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of an air suspension leveling device provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0031] Figure 4A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0033] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities that do not necessarily correspond to physically or logically separate entities.

[0034] The embodiments of the present application provide an air suspension leveling method, device, equipment and storage medium, which can ensure the most basic leveling function and driving safety when a compressor component fails. At the same time, different adjustment strategies are selected for different working conditions to ensure driving safety.

[0035] To achieve the above technical effects, the general ideas of this application are as follows:

[0036] An air suspension leveling method, the method comprising the steps of:

[0037] S101: Determine whether to trigger an emergency leveling function based on at least a state of a vehicle air suspension compressor and a height difference of wheels.

[0038] S102: If the emergency leveling function is triggered, a control strategy is selected based on the vehicle speed condition to control the air spring to vent air to the atmosphere, so as to reduce the height of the air spring to adjust the vehicle body air suspension, wherein different control strategies correspond to different vehicle speed conditions.

[0039] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1 , Figure 1 The figure shows a flow chart of an air suspension leveling method provided by the present invention, as shown in FIG. Figure 1 As shown, the method includes the steps of:

[0041] Step S101: Determine whether to trigger an emergency leveling function based at least on the state of the vehicle air suspension compressor and the height difference of the wheels.

[0042] Specifically, at least detecting whether the vehicle air suspension compressor is in a pressure buildup fault state;

[0043] Detect whether the height difference between any two wheels of the vehicle is greater than the set threshold;

[0044] If the vehicle's air suspension compressor detects a pressure buildup failure, no other equipment detects a fault, and the height difference between any two wheels of the vehicle exceeds a set threshold, the emergency leveling function is triggered. If any of these conditions are not met, the emergency leveling function is not triggered. Other equipment includes the distribution valve, air tank, air spring height sensor, and controller.

[0045] It is understandable that when only the compressor fails to build pressure and the wheel height is greater than the set value (custom setting, this application is set to 8mm), the leveling function is triggered. Otherwise, if any of the conditions are not met, the emergency leveling function is not triggered.

[0046] Step S102: If the emergency leveling function is triggered, a control strategy is selected based on the vehicle speed condition to control the air spring to vent air to the atmosphere, so as to reduce the height of the air spring to adjust the vehicle body air suspension, wherein different control strategies correspond to different vehicle speed conditions.

[0047] It should be explained that the air suspension system mainly includes a compressor, a distribution valve, an air tank, an air spring, and other related parts such as a height sensor and a controller. Taking the open air suspension as an example, when the air suspension is rising, the compressor pressurizes the outside atmosphere and the gas in the air tank, and then fills it into the air spring to make the vehicle body rise. If the pressure in the air tank is too low, the air tank will be inflated when it is idle. A higher air tank pressure can reduce the rising time of the air suspension system. When the air suspension is descending, the compressor does not work, and the system directly discharges the high-pressure gas in the air spring into the atmosphere.

[0048] From the above analysis of the working mode of the open air suspension system, it can be seen that if the compressor pressure building fails, the rising function will be seriously affected, and the lowering function can usually be enabled normally; in fact, there are some differences between the working mode of the closed air suspension and the open air suspension, but they can also achieve the same function, that is, when the compressor pressure building fails, the air spring is controlled to be directly exhausted to the atmosphere to achieve the purpose of lowering the air spring height and adjusting the vehicle body posture. This application mainly uses this functional characteristic to achieve the function of adjusting the vehicle body height.

[0049] Specifically, if it is determined that the vehicle is in a high-speed operating condition, the height values ​​measured by multiple wheel height sensors are obtained, and the current lowest height value among the multiple wheels is used as the target height adjustment;

[0050] According to the adjustment order of front axle to rear axle, the gas in the air springs corresponding to the remaining wheels except the target wheel is discharged to the atmosphere in turn to reduce the height of the air spring.

[0051] Among them, the height of the remaining wheels is adjusted in stages according to the preset height levels until the target adjustment height is reached. It can be understood that under high-speed conditions, the current lowest height value among multiple wheels is used as the target adjustment height, and a graded adjustment method can be set to adjust the suspension height to the target height. For example, the air suspension is generally adjusted together on the same axis. For example, the maximum adjustment is 10mm or 15mm at a time. If the adjustment target is 30mm, it must be divided into two 15mm adjustments or three 10mm adjustments.

[0052] Specifically, under high-speed conditions, the air suspension compressor fails to build up pressure and the vehicle height is abnormal. It is necessary to adjust the height of the four wheels of the vehicle to be consistent, the body posture is normal, and driving safety is ensured; at this time, the vehicle emergency leveling function is activated: under high-speed conditions, the system reads the height value measured by the four-wheel height sensor, and uses the current lowest height value of the four wheels as the target adjustment height; leveling is performed by deflating the other three wheels; the gas in the other three air springs is discharged directly into the atmosphere in the order of the front axle and then the rear axle; if a graded height adjustment is set, the height will be lowered to the target height in sequence according to the height level, and the adjustment will be stopped; after the adjustment is completed, the original lowest air spring may be affected by the lowering of the other three air springs, and the height may drop, and no further adjustment will be made at this time.

[0053] If it is determined that the vehicle is in a low-speed operating condition, the gas in the air springs corresponding to the left and right coaxial wheels of the vehicle will be discharged to the atmosphere so that the height of the left and right coaxial wheels can be adjusted to a relatively balanced position.

[0054] Among them, the average height difference between the front and rear axles of the vehicle is detected; if the average height difference between the front and rear axles of the vehicle is greater than the set range, exhaust treatment is performed on the side with the higher height value to ensure that the average height difference between the front and rear axles is within the set range.

[0055] Specifically, under low-speed conditions, if the air suspension compressor pressure building failure occurs, priority should be given to ensuring the left and right balance of the vehicle, and then ensuring the vehicle height is as high as possible to cope with possible potholes / speed bumps / slopes and other conditions to prevent the chassis from hitting the bottom; therefore, the emergency leveling logic under low-speed conditions is different from that under high-speed conditions. The logic is as follows: the left and right coaxial air springs are connected, the air pressure on both sides is balanced, and the left and right wheel heights are adjusted to similar positions; the front axle is balanced first, and then the rear axle is balanced; after balancing, the height difference between the front and rear axles is detected; if the average height difference between the front and rear axles is more than 20mm at this time, the higher side (usually the rear axle) is exhausted, and the target height is the height of the lower side + 20mm.

[0056] Different speed conditions correspond to different control strategies, meaning that the adjustment methods for high-speed and low-speed conditions are different. Under high-speed conditions, the adjustment method is to take the lowest height value among the four wheels as the target and adjust the other three wheels to the same height, with the adjustment order being front axle then rear axle. Under low-speed conditions, due to possible potholes, speed bumps, and slopes, the chassis may bottom out. Prioritizing left and right vehicle balance is the priority, followed by ensuring a high vehicle height. The approach is to balance the front axle first, then the rear axle, so that the left and right wheel heights are adjusted to similar positions.

[0057] In one embodiment, different control strategies are adopted based on different vehicle speed conditions, including:

[0058] After the emergency leveling operation is completed, the vehicle air suspension height adjustment value is limited according to different vehicle speeds;

[0059] If it is determined that the vehicle is at a first set speed, the vehicle air suspension is adjusted to a first target height;

[0060] If it is determined that the vehicle is at the second set vehicle speed, adjusting the vehicle air suspension to a second target height;

[0061] If it is determined that the vehicle is at a third set speed, adjusting the vehicle air suspension to a third target height;

[0062] If it is determined that the vehicle is at a fourth set speed, adjusting the vehicle air suspension to a fourth target height;

[0063] If it is determined that the vehicle is at a fifth set speed, adjusting the vehicle air suspension to a fifth target height;

[0064] The first set vehicle speed is less than the second set vehicle speed and less than the third set vehicle speed and less than the fourth set vehicle speed and less than the fifth set vehicle speed; the first target height is greater than the second target height and more than the third target height and more than the fourth target height and more than the fifth target height.

[0065] Specifically, if an air suspension compression buildup failure occurs and emergency leveling is completed, the vehicle body height may remain at a relatively high level. As the vehicle speed continues to increase, this height may cause the vehicle to roll excessively, affecting the driving experience and even causing the risk of vehicle rollover under extreme conditions. Therefore, under system failure conditions, the speed-dependent descent control function remains in effect; all other control functions are prohibited.

[0066] The logic of vehicle height decreasing with speed is:

[0067] When the vehicle speed is very low (first set speed), the target height range of the vehicle body is highest and below (first target height); when the vehicle speed is relatively low (second set speed), the target height range of the vehicle body is high and below (second target height); when the vehicle speed is medium (third set speed), the target height range of the vehicle body is medium and below (third target height); when the vehicle speed is relatively high (fourth set speed), the target height range of the vehicle body is relatively low and below (fourth target height); when the vehicle speed is very high (fifth set speed), the target height range of the vehicle body is very low (fifth target height).

[0068] When the vehicle speed increases from a low speed, the vehicle body height decreases in sequence; when the vehicle descends from a high speed, the vehicle body height is not adjusted due to a compressor pressure building failure.

[0069] It is understandable that the maximum value of suspension height adjustment is limited depending on the vehicle speed.

[0070] To sum up, this application makes full use of the characteristics of the air suspension system. When the compressor components fail, all adjustment functions will not fail. The most basic leveling function can be guaranteed to ensure driving safety. Different adjustment strategies are selected for different working conditions. Under low-speed conditions, priority is given to ensuring a higher vehicle height, which is convenient for users to deal with complex road conditions and reduce the risk of bottoming out due to too low suspension height; under high-speed conditions, priority is given to ensuring the stability of the vehicle body, reducing vehicle abnormalities caused by inconsistent suspension height, and ensuring driving safety. It is suitable for open air suspension and closed air suspension and is widely used.

[0071] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of an air suspension leveling device provided by the present invention, as shown in FIG. Figure 2 As shown, the device includes:

[0072] Determination module 201: It is used to determine whether to trigger the emergency leveling function based on at least the state of the vehicle air suspension compressor and the height difference of the wheels

[0073] Adjustment module 202: If the emergency leveling function is triggered, it is used to select a control strategy based on the vehicle speed condition to control the air spring to vent to the atmosphere, so as to reduce the height of the air spring to adjust the vehicle body air suspension. Different control strategies correspond to different vehicle speed conditions.

[0074] Furthermore, in one possible implementation, the adjustment module is further configured to, if it is determined that the vehicle is in a high-speed operating condition, obtain height values ​​measured by multiple wheel height sensors, and use the current lowest height value of the multiple wheels as the target height adjustment;

[0075] The air in the air springs corresponding to the remaining wheels except the target is discharged to the atmosphere to adjust the height of the remaining wheels to the target height to reduce the air spring height.

[0076] Furthermore, in a possible implementation manner, the adjustment module is further configured to adjust the heights of the remaining wheels in stages according to preset height levels until a target adjustment height is reached.

[0077] Furthermore, in a possible implementation, the adjustment module is also used to discharge the gas in the air springs corresponding to the coaxial left and right wheels of the vehicle into the atmosphere if it is determined that the vehicle is in a low-speed operating condition, so as to adjust the height of the coaxial left and right wheels to a relatively balanced position.

[0078] Furthermore, in a possible implementation, the adjustment module is further configured to detect an average height difference between the front and rear axles of the vehicle;

[0079] If the average height difference between the front and rear axles of the vehicle is greater than the set range, exhaust treatment is performed on the side with the higher height value to ensure that the average height difference between the front and rear axles is within the set range.

[0080] Furthermore, in a possible implementation, the adjustment module is also used to adjust the height of the vehicle air suspension to a target height according to the speed range of the vehicle after completing the emergency leveling operation, wherein different speed ranges correspond to different target heights.

[0081] Furthermore, in a possible implementation manner, the judgment module is further configured to at least detect whether the vehicle air suspension compressor is in a pressure buildup fault state;

[0082] Detect whether the height difference between any two wheels of the vehicle is greater than the set threshold;

[0083] If the vehicle's air suspension compressor is detected to have a pressure buildup failure and no other equipment detects a fault, and the height difference between any two wheels of the vehicle is greater than the set threshold, the emergency leveling function will be triggered; if any of the above conditions is not met, the emergency leveling function will not be triggered.

[0084] Furthermore, in a possible implementation manner, the judgment module is also used to judge whether the other devices are faulty, wherein the other devices include: a distribution valve, an air storage tank, an air spring height sensor, and a controller.

[0085] Refer to the following Figure 3 The electronic device 300 according to this embodiment of the present invention will be described. Figure 3 The electronic device 300 shown is merely an example and should not limit the functions and scope of use of the embodiments of the present invention.

[0086] like Figure 3As shown, electronic device 300 is implemented as a general-purpose computing device. Components of electronic device 300 may include, but are not limited to, the aforementioned at least one processing unit 310, the aforementioned at least one storage unit 320, and a bus 330 connecting various system components (including storage unit 320 and processing unit 310).

[0087] The storage unit stores program codes, which can be executed by the processing unit 310, so that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the above “Example Method” section of this specification.

[0088] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 321 and / or a cache memory unit 322 , and may further include a read-only memory unit (ROM) 323 .

[0089] The storage unit 320 may also include a program / utility 324 having a set (at least one) of program modules 325, such program modules 325 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0090] Bus 330 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0091] The electronic device 300 can also communicate with one or more external devices (e.g., a keyboard, a pointing device, a Bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 300, and / or any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., a router, a modem, etc.). Such communication can occur via an input / output (I / O) interface 350. Furthermore, the electronic device 300 can also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 360. As shown, the network adapter 360 communicates with other modules of the electronic device 300 via a bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device 300, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0092] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

[0093] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above-mentioned method of this specification is stored. In some possible implementations, various aspects of the present invention may also be implemented in the form of a program product, which includes program code. When the program product is executed on a terminal device, the program code is used to cause the terminal device to perform the steps according to various exemplary embodiments of the present invention described in the "Exemplary Methods" section of this specification.

[0094] refer to Figure 4 As shown, a program product 400 for implementing the above method according to an embodiment of the present invention is described. The program product 400 may be a portable compact disc read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0095] The program product may be implemented in any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0096] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0097] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0098] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0099] Furthermore, the above-described figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention and are not intended to be limiting. It is readily understood that the processes illustrated in the above-described figures do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0100] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

[0101] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A method for leveling an air suspension, characterized in that: include: determining whether to trigger an emergency leveling function based on at least a status of an air suspension compressor of the vehicle and a height difference of the wheels; If the emergency leveling function is triggered, a control strategy is selected based on the vehicle speed condition to control the air spring to vent to the atmosphere, thereby lowering the air spring height to adjust the body air suspension. Different control strategies are used for different vehicle speed conditions. If it is determined that the vehicle is in a high-speed operating condition, the height values ​​measured by multiple wheel height sensors are obtained, and the current lowest height value among the multiple wheels is used as the target height adjustment; The air in the air springs corresponding to the remaining wheels except the target is discharged to the atmosphere to adjust the height of the remaining wheels to the target height to reduce the air spring height.

2. The method according to claim 1, characterized in that Also includes: The height of the remaining wheels is adjusted in stages according to the preset height levels until the target adjustment height is reached.

3. The method according to claim 1, characterized in that The method of selecting a control strategy based on the vehicle speed condition to control the air spring to vent air to the atmosphere so as to reduce the height of the air spring to adjust the vehicle body air suspension includes: If it is determined that the vehicle is in a low-speed operating condition, the gas in the air springs corresponding to the left and right coaxial wheels of the vehicle will be discharged to the atmosphere so that the height of the left and right coaxial wheels can be adjusted to a relatively balanced position.

4. The method according to claim 3, characterized in that After the coaxial left and right wheels are adjusted to a relative balanced position, the following steps are performed: Detect the average height difference between the front and rear axles of the vehicle; If the average height difference between the front and rear axles of the vehicle is greater than the set range, exhaust treatment is performed on the side with the higher height value to ensure that the average height difference between the front and rear axles is within the set range.

5. The method according to claim 1, wherein After selecting a control strategy based on the vehicle speed condition to control the air spring to vent air to the atmosphere so as to reduce the height of the air spring to adjust the vehicle body air suspension, the method includes: After the emergency leveling operation is completed, the height of the vehicle's air suspension is adjusted to the target height according to the vehicle's speed range, where different speed ranges correspond to different target heights.

6. The method according to claim 1, characterized in that The determining whether to trigger the emergency leveling function based at least on the state of the vehicle air suspension compressor and the height difference of the wheels includes: At least detect whether the vehicle air suspension compressor is in a pressure buildup fault state; Detect whether the height difference between any two wheels of the vehicle is greater than the set threshold; If the vehicle's air suspension compressor is detected to have a pressure buildup failure and no other equipment detects a fault, and the height difference between any two wheels of the vehicle is greater than the set threshold, the emergency leveling function will be triggered; if any of the above conditions is not met, the emergency leveling function will not be triggered.

7. The method according to claim 6, characterized in that include: The other devices include: a distribution valve, an air storage tank, an air spring height sensor and a controller.

8. An air suspension leveling device, characterized in that: include: a determination module, configured to determine whether to trigger an emergency leveling function based at least on a state of an air suspension compressor of the vehicle and a height difference of the wheels; An adjustment module, which is used to select a control strategy based on the vehicle speed condition to control the air spring to vent to the atmosphere if the emergency leveling function is triggered, thereby lowering the air spring height to adjust the vehicle body air suspension, wherein different control strategies are corresponding to different vehicle speed conditions; The adjustment module is further configured to obtain height values ​​measured by multiple wheel height sensors if it is determined that the vehicle is in a high-speed operating condition, and use the current lowest height value among the multiple wheels as a target height adjustment; The air in the air springs corresponding to the remaining wheels except the target is discharged to the atmosphere to adjust the height of the remaining wheels to the target height to reduce the air spring height.

9. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 7 is implemented.

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