Air suspension height control method, device, equipment, storage medium and program product

Abstract

The invention discloses an air suspension height control method, device and equipment, a storage medium and a program product. The method comprises the steps that the target height grade of the air suspension and the actual total gas amount in a cavity of the air suspension and a cavity of an adjusting mechanism are obtained; determining the total target gas quantity corresponding to the target height grade according to the corresponding relation between the height grade and the gas quantity; under the condition that the difference value between the actual total gas quantity and the total target gas quantity is larger than a preset threshold value, the actual total gas quantity is adjusted, so that the difference value between the adjusted actual total gas quantity and the total target gas quantity is smaller than or equal to the preset threshold value; and based on the target height grade and the adjusted actual total gas quantity, an adjusting mechanism is controlled to work so as to adjust the height of the air suspension. According to the embodiment of the invention, the air quantity of the air storage tank and the air spring is adjusted, and before the air suspension is adjusted, the air quantity of the air storage tank and the air spring is adjusted in advance, so that the efficiency of adjusting the air suspension is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of suspension control, and in particular, relates to an air suspension height control method, device, equipment, storage medium and program product. Background Art

[0002] At present, in a closed air suspension system, a controller is usually used to control the corresponding solenoid valve to open, and then the controller controls the compressor to open, so that the air in the closed air suspension system is exchanged and transmitted between the air tank and the air spring. That is, when the air suspension needs to be controlled to rise, the air in the air tank is transmitted to the air spring, and when the air suspension needs to be controlled to lower, the gas in the air spring is compressed back into the air tank.

[0003] In the above control process, the suspension controller only considers the air pressure between the air spring and the air tank. When the air pressure between the air tank and the air spring is not sufficient to support the adjustment of the height of the air suspension, the suspension controller controls the closed suspension system to be connected with the outside world, and adjusts the air pressure of the air tank through the outside world to change the pressure difference between the air tank and the air spring to realize the flow of air between the air tank and the air spring, thereby realizing the adjustment of the height of the air suspension. However, in the process of frequent air exchange between the closed air suspension and the outside world, the frequent opening of the solenoid valve connected to the outside world will not only reduce the height adjustment efficiency of the air suspension, but also easily introduce humid air from the outside world, increase the burden of the desiccant in the closed air suspension system, and shorten the service life of the closed air suspension system. Summary of the invention

[0004] The embodiments of the present application provide an air suspension height control method, device, equipment, storage medium and program product, which can adjust the air volume of the air tank and the air spring. Before adjusting the air suspension, the efficiency of adjusting the air suspension is improved by adjusting the air volume of the air tank and the air spring in advance.

[0005] On the one hand, an embodiment of the present application provides an air suspension height control method, which is applied to a suspension controller of an air suspension system, wherein the air suspension system further includes an air suspension and an adjustment mechanism, wherein the adjustment mechanism is electrically connected to the suspension controller, and a cavity of the adjustment mechanism contains gas for adjusting the height of the air suspension, and the method includes:

[0006] Obtaining a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and a cavity of the adjustment mechanism;

[0007] Determining a total target gas volume corresponding to the target altitude level according to a corresponding relationship between the altitude level and the gas volume;

[0008] When the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the air suspension and in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold;

[0009] Based on the target height level and the adjusted actual total gas volume, the adjustment mechanism is controlled to operate so as to adjust the height of the air suspension.

[0010] Optionally, the adjustment structure includes an air tank, the air suspension includes air springs arranged corresponding to the vehicle wheels, and the air tank and the plurality of air springs are connected via a pneumatic pipeline;

[0011] Obtaining the actual total amount of gas in the cavity of the air suspension and in the cavity of the adjustment mechanism, including:

[0012] Acquire a first pressure value and a first volume of the air storage tank, and a second pressure value and a corresponding second volume of each air spring;

[0013] Determining the gas volume of the gas storage tank according to the product of the first pressure value and the first volume;

[0014] Determining the air volume of each of the air springs according to the second pressure value and the second volume of each of the air springs;

[0015] Summing the air spring volumes of the plurality of air springs to obtain a total air spring volume of the plurality of air springs;

[0016] The actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism is determined according to the sum of the gas volume of the gas tank and the total gas volume of the air spring.

[0017] Optionally, obtaining a first pressure value of the gas storage tank includes:

[0018] When the air storage tank is connected to at least one of the air springs, a first detection pressure value of the air storage tank under a first target state is obtained, wherein the first target state includes that the air storage tank is connected to an air pressure sensor disposed on the pneumatic pipeline, and the plurality of air springs are in a state of being isolated from the outside world;

[0019] determining the first detected pressure value as a first pressure value;

[0020] When the air storage tank is not connected to the air spring and the outside world, obtaining the most recent first historical pressure value of the air storage tank;

[0021] The first historical pressure value is determined as a first pressure value.

[0022] Optionally, obtaining a second pressure value of each air spring includes:

[0023] When the air spring is not connected to the air storage tank or the outside, obtaining a most recent second historical pressure value of the air spring;

[0024] determining the second historical pressure value as a second pressure value;

[0025] When the air spring is in communication with the air tank or the outside, obtaining a second detection pressure value of the air spring in a second target state, wherein the second target state includes a state in which the air spring is in communication with the air pressure sensor and the air spring is isolated from the air tank or the outside;

[0026] The second detected pressure value is determined as a second pressure value of the air spring.

[0027] Optionally, when at least one of the air springs is connected to the air tank or the outside, obtaining the first pressure value of the air tank and the first volume of the air tank, as well as the second pressure value of each of the air springs and the corresponding second volume of the air spring includes:

[0028] After obtaining the second pressure value of each of the air springs and the second volume of the corresponding air spring, the first pressure value of the air storage tank and the first volume of the air storage tank are obtained.

[0029] Optionally, obtaining the second volume of the air spring includes:

[0030] Obtaining a detection height value of the air spring;

[0031] Based on the detected height value, a second volume corresponding to the air spring is determined.

[0032] Optionally, obtaining a target height level of the air suspension includes:

[0033] obtaining a plurality of historical height levels of the air suspension;

[0034] Count the number of times each historical height level is used;

[0035] The historical altitude level corresponding to the most times of use is selected as the target altitude level.

[0036] Optionally, the regulating mechanism further comprises a compressor, and the compressor is arranged on the pneumatic pipeline;

[0037] In a case where the actual total gas volume is less than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold, comprises:

[0038] Controlling the compressor to start, and controlling the air storage tank to communicate with the outside, so as to adjust the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value;

[0039] In a case where the actual total gas volume is greater than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold, comprises:

[0040] The compressor is controlled to start, and at least one of the air springs is controlled to be connected to the outside world so that the air in the air spring can enter the outside world, so as to adjust the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value.

[0041] On the other hand, an embodiment of the present application provides an air suspension height control device, which is applied to a suspension controller of an air suspension system, wherein the air suspension system further includes an air suspension and an adjustment mechanism, wherein a cavity of the adjustment mechanism contains gas for adjusting the height of the air suspension, and the device includes:

[0042] an acquisition module, configured to acquire a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and in a cavity of the adjustment mechanism;

[0043] A determination module, configured to determine a total target gas volume corresponding to the target altitude level according to a correspondence between the altitude level and the gas volume;

[0044] an adjusting module, configured to adjust the actual total gas volume in the cavity of the air suspension and in the cavity of the adjusting mechanism when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold;

[0045] The control module is used to control the adjustment mechanism to operate based on the target height level and the adjusted actual total gas volume to adjust the height of the air suspension.

[0046] In another aspect, an embodiment of the present application provides a suspension controller, the suspension controller comprising: a processor and a memory storing computer program instructions;

[0047] When the processor executes the computer program instructions, the air suspension height control method as described in the first aspect is implemented.

[0048] On the other hand, an embodiment of the present application provides a computer storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the air suspension height control method as described in the first aspect is implemented.

[0049] On the other hand, an embodiment of the present application provides a computer program product. When instructions in the computer program product are executed by a processor of a suspension controller, the suspension controller executes the air suspension height control method as described in the first aspect.

[0050] The air suspension height control method, device, equipment, storage medium and program product of the embodiment of the present application, in the related art, when adjusting the air suspension, the suspension controller only considers the air pressure between the air spring and the air tank, and does not estimate the gas volume of the air spring and the air tank, resulting in frequent and multiple introduction of humid air from the outside during the adjustment of the air suspension, affecting the efficiency of the air suspension height adjustment. The embodiment of the present application can determine the total target gas volume corresponding to the target height level through the correspondence between the height level and the gas volume, and estimate the actual total gas volume of the air spring and the air tank. When the difference between the actual total gas volume and the total target gas volume is greater than the preset threshold, the actual total gas volume can be adjusted before the height of the air suspension is adjusted, so that the difference between the actual total gas volume adjusted by the adjustment mechanism and the total target gas volume is less than or equal to the preset threshold, so as to ensure that in the process of adjusting the height of the air suspension, there is no need to frequently exchange gas volume with the outside, thereby reducing the number of times the adjustment mechanism and / or the air spring are connected to the outside during the air suspension adjustment process, thereby improving the efficiency of the adjustment mechanism in adjusting the height of the air suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0052] Figure 1 is a structural block diagram of an air suspension system provided by an embodiment of the present application;

[0053] Figure 2 It is a structural schematic diagram provided by an embodiment of the present application for demonstrating the principle of the adjustment mechanism;

[0054] Figure 3 is a flow chart of an air suspension height control method provided by an embodiment of the present application;

[0055] Figure 4 is a flow chart of an air suspension height control method provided by another embodiment of the present application;

[0056] Figure 5 is a flow chart of an air suspension height control method provided in yet another embodiment of the present application;

[0057] Figure 6 is a flow chart of an air suspension height control method provided by another embodiment of the present application;

[0058] Figure 7 is a structural schematic diagram of an air suspension height control device provided by an embodiment of the present application;

[0059] Figure 8 It is a structural schematic diagram of a suspension controller provided in one embodiment of the present application. DETAILED DESCRIPTION

[0060] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] In order to solve the problems of the prior art, the embodiments of the present application provide an air suspension height control method, device, equipment, storage medium and program product. In the related art, when adjusting the air suspension, the suspension controller only considers the air pressure between the air spring and the air tank, and does not estimate the gas volume of the air spring and the air tank, resulting in frequent and multiple introduction of humid air from the outside during the adjustment of the air suspension, affecting the efficiency of the height adjustment of the air suspension. The embodiment of the present application can determine the total target gas volume corresponding to the target height level through the correspondence between the height level and the gas volume, and estimate the actual total gas volume of the air spring and the air tank. When the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, the actual total gas volume can be adjusted before adjusting the height of the air suspension, so that the difference between the actual total gas volume adjusted by the adjustment mechanism and the total target gas volume is less than or equal to the preset threshold, so as to ensure that during the adjustment of the height of the air suspension, there is no need to frequently exchange gas volume with the outside, thereby reducing the number of times the adjustment mechanism and / or the air spring are connected to the outside during the adjustment of the air suspension, thereby improving the efficiency of the adjustment mechanism in adjusting the height of the air suspension.

[0063] The following first introduces the air suspension system. Figure 1 , Figure 1 A structural block diagram of an air suspension system is shown. The air suspension system may include: a suspension controller 10 arranged on a vehicle, an air suspension 20 and an adjustment mechanism 30. The adjustment mechanism 30 is electrically connected to the suspension controller 10. The cavity of the adjustment mechanism 30 contains gas for adjusting the height of the air suspension 20.

[0064] When the air suspension 20 needs to be adjusted, the suspension controller 10 receives the target height level of the air suspension 20 input by the user, and then determines the total target gas volume according to the correspondence between the target air level and the height level and the gas volume. Thereafter, the suspension controller 10 obtains the actual total gas volume of the adjustment mechanism 30 and the air suspension 20. When the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, the suspension controller 10 controls the adjustment mechanism 30 or the air suspension 20 to communicate with the outside world to adjust the actual total gas volume. Then, the suspension controller 10 controls the adjustment mechanism 30 to operate according to the target height level and the actual total gas volume to adjust the air suspension 20 to the target height level. When the difference between the actual total gas volume and the total target gas volume is less than or equal to the preset threshold, the suspension controller 10 directly controls the adjustment mechanism 30 to operate to achieve height adjustment of the air suspension 20.

[0065] In some other embodiments, the suspension controller 10 is also electrically connected to a vehicle-mounted controller 40, and the vehicle-mounted controller 40 also stores historical target height levels. When obtaining the target height level of the air suspension 20, the historical target height level can also be obtained through the vehicle-mounted controller 40.

[0066] As another implementation method, the historical target height level can also be stored in the suspension controller 10, and the suspension controller 10 obtains the vehicle's driving speed and vehicle driving status from the on-board controller 40 so that the height of the air suspension can be adjusted according to the vehicle's driving status and vehicle driving speed.

[0067] In some embodiments, reference Figure 2 , Figure 2 The structural connection diagram of the adjustment mechanism 30 is shown. The air suspension 20 includes air springs 21 arranged corresponding to the vehicle wheels. The adjustment mechanism may include: an air tank 31, a pneumatic pipeline 32 is arranged between the air tank 31 and the air spring 21, and is used to realize the air volume exchange between the air tank 31 and the air spring 21. A switch solenoid valve 33 corresponding to each air spring 21 is arranged on the pneumatic pipeline 32, and a first intake solenoid valve 321, a second intake solenoid valve 322, a first exhaust solenoid valve 323 and a second exhaust solenoid valve 324 for controlling the connection between the air tank 31 and the air spring 21 are also respectively arranged. The switch solenoid valve 33, the first intake solenoid valve 321, the second intake solenoid valve 322, the first exhaust solenoid valve 323 and the second exhaust solenoid valve 324 are all electrically connected to the suspension controller 10.

[0068] As an example, taking the number of air springs 21 as four, the four air springs 21 are respectively a left front air spring, a right front air spring, a left rear air spring and a right rear air spring, and the four switch solenoid valves 33 are respectively a first switch solenoid valve 331 corresponding to the left front air spring, a second switch solenoid valve 332 corresponding to the right front air spring, a third switch solenoid valve 333 corresponding to the left rear air spring and a fourth switch solenoid valve 334 corresponding to the right rear.

[0069] In this embodiment, taking connecting the air tank 31 with the air spring of the left front wheel and the air spring of the left rear wheel as an example, the suspension controller 10 controls the first intake solenoid valve 321, the second intake solenoid valve 322, the first switch solenoid valve 331 and the third switch solenoid valve 333 to open, so that the air tank 31 is connected with the left front air spring and the left rear air spring, thereby realizing the air exchange between the air tank 31 and the left front air spring and the left rear air spring.

[0070] In some embodiments, a compressor 34 is disposed on the pneumatic pipeline 32 of the first air intake solenoid valve 321 and the second air intake solenoid valve 324 , and the compressor 34 is electrically connected to the suspension controller 10 .

[0071] When the gas volume is exchanged between the gas storage tank 31 and the air spring 21 , the compressor 34 can be turned on to quickly achieve the gas volume exchange between the gas storage tank 31 and the air spring 21 .

[0072] In some other embodiments, a conduction solenoid valve 35 is provided between the first intake solenoid valve 321 and the compressor 34. The conduction solenoid valve 35 is electrically connected to the suspension controller 10. When the amount of gas contained in the regulating mechanism 30 needs to be adjusted, the suspension controller 10 can control the conduction solenoid valve 35 to open, and turn on the compressor 34 to inhale air from the outside through the compressor 34 to supplement the gas in the regulating mechanism 30.

[0073] In some other embodiments, an air pressure sensor 36 is provided between the second air intake solenoid valve 322 and the switch solenoid valve 33 , and the air pressure sensor 36 is electrically connected to the suspension controller 10 .

[0074] When it is necessary to perform pressure detection on the air tank 31, the suspension controller 10 can control the first intake solenoid valve 321 and the second intake solenoid valve 323 to open, and the second exhaust solenoid valve 322, the first exhaust solenoid valve 323, all the switch solenoid valves 33 and the conduction solenoid valve 35 to be closed, so as to realize pressure detection of the air tank 31.

[0075] When the pressure in the air spring 21 needs to be detected, the suspension controller 10 can control the corresponding switch solenoid valve 33 to open, and the second intake solenoid valve 322 and the second exhaust solenoid valve 324 to close, so as to realize the pressure detection of the air spring 21 .

[0076] In some embodiments, a dryer 37 is disposed between the compressor 34 and the second intake solenoid valve 322 , and the dryer 37 is electrically connected to the suspension controller 10 .

[0077] In this embodiment, when the air tank 31 is replenished with air, the suspension controller 10 controls the conduction solenoid valve 35 and the first air intake solenoid valve 321 to be turned on, and controls the compressor 34 and the dryer 37 to start. When the outside air enters the regulating mechanism 30, the outside air enters the air tank 31 through the compressor 34, the dryer 37 and the first air intake solenoid valve 321 to ensure that the air entering the air tank 31 remains dry, reduce the corrosion of the inner wall of the air tank 31 by humid air, and extend the service life of the air tank 31.

[0078] In the embodiment of the present application, before adjusting the air suspension 20, the target height level and the actual total gas volume of the adjustment mechanism are first obtained, and then the total target gas volume is determined by the correspondence between the target height level and the height level and the gas volume. According to the total target gas volume and the actual total gas volume, it can be determined whether the gas volume in the cavity of the adjustment mechanism 30 can reach the target height level. When the difference between the actual total gas volume and the total target gas volume is greater than the preset threshold, it means that the gas in the cavity of the adjustment mechanism 30 is not enough to make the air suspension 20 reach the target height level. At this time, the actual total gas volume in the adjustment mechanism 30 can be adjusted, and then the height of the air suspension 20 is adjusted according to the adjusted actual total gas volume and the target height level. In the present application, before adjusting the air suspension 20, the actual total gas volume of the adjustment mechanism 30 is adjusted to ensure that the adjusted actual total gas volume meets the height adjustment requirement of the air suspension 20, so that when adjusting the height of the air suspension 20, there is no need to frequently control the adjustment mechanism 30 to communicate with the outside world, thereby reducing the number of times the air suspension 20 communicates with the outside world and improving the efficiency of adjusting the air suspension 20.

[0079] The following is an introduction to the air suspension height control method provided in the embodiment of the present application.

[0080] Figure 3 FIG. 1 is a flow chart of an air suspension height control method provided by an embodiment of the present application. Figure 3 As shown, the air suspension height control method can be applied to the suspension controller in the above air suspension system, and the air suspension height control method can include S301-S304:

[0081] S301, obtaining a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and in a cavity of an adjustment mechanism.

[0082] In some embodiments, before adjusting the height of the air suspension, the target height level input by the user and the actual total amount of gas in the cavity of the air suspension and the cavity of the adjusting mechanism can be obtained, where, as an example, the target height level can be input by the user or a historical height level stored by the vehicle-mounted controller, and the actual total amount of gas in the cavity of the air suspension and the cavity of the adjusting mechanism can be determined by the pressure value detected by the air pressure sensor in the above-mentioned air suspension system and the corresponding cavity volume.

[0083] S302, determining a total target gas volume corresponding to the target altitude level according to a correspondence between the altitude level and the gas volume.

[0084] In some embodiments, a correspondence between height levels and gas quantities is stored in a suspension controller, and the total target gas quantity corresponding to the target height level can be determined through the correspondence between the height levels and the gas quantities, that is, the amount of gas in the cavity within the adjustment mechanism needs to be adjusted to adjust the air suspension to the target height.

[0085] As an example, the correspondence between the altitude level and the gas volume may be independently set by the supplier, or the correspondence between the altitude level and the gas volume may be determined based on the historical altitude level and historical gas volume of the vehicle.

[0086] S303, when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism is adjusted so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold.

[0087] In some embodiments, when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold value, it means that the actual total gas volume in the cavity of the regulating mechanism is lower than the total target gas volume or the actual total gas volume is higher than the preset total target gas volume. When the actual total gas volume is lower than the total target gas volume, the actual total gas volume cannot meet the height adjustment requirement of the air suspension, and the cavity in the regulating mechanism needs to be replenished with gas; when the actual total gas volume is higher than the total target gas volume, the gas in the cavity of the regulating mechanism needs to be exhausted into the atmosphere to ensure that the height of the air suspension can be reduced to the target height level.

[0088] For example, when the actual total gas volume is greater than the total target gas volume, it means that the actual total gas volume of the regulating mechanism exceeds the total target gas volume, and the actual total gas volume of the regulating mechanism needs to be exhausted into the atmosphere to reduce the actual total gas volume and meet the height adjustment requirements; when the actual total gas volume is less than the total target gas volume, it means that the actual total gas volume of the regulating mechanism is lower than the total target gas volume, and the actual total gas volume cannot adjust the air suspension to the target height level. It is necessary to add air to the regulating mechanism from the outside to increase the height of the air suspension and meet the height requirements of the air suspension.

[0089] S304, based on the target height level and the actual total gas volume after adjustment, controlling the adjustment mechanism to adjust the height of the air suspension.

[0090] In some embodiments, after the actual total gas amount is adjusted, the adjusted actual total gas amount can be distributed to the gas tank and the air spring respectively to meet the height adjustment requirement of the air suspension.

[0091] In the embodiment of the present application, the total target gas volume corresponding to the target height level can be determined through the corresponding relationship between the height level and the gas volume, and the actual total gas volume of the air spring and the gas tank can be estimated. When the difference between the actual total gas volume and the total target gas volume is greater than the preset threshold, the actual total gas volume can be adjusted before adjusting the height of the air suspension, so that the difference between the actual total gas volume adjusted by the adjustment mechanism and the total target gas volume is less than or equal to the preset threshold, so as to ensure that in the process of adjusting the height of the air suspension, there is no need to frequently exchange gas volume with the outside world, thereby reducing the number of times the adjustment mechanism and / or air spring are connected to the outside world during the process of adjusting the air suspension, thereby improving the efficiency of the adjustment mechanism in adjusting the height of the air suspension. .

[0092] Reference Figure 4 In some other embodiments, in S301, obtaining the actual total amount of gas in the cavity of the air suspension and the cavity of the adjustment mechanism may include:

[0093] S3011, obtaining a first pressure value and a first volume of the air storage tank, and a second pressure value and a second volume of each air spring;

[0094] S3012, determining the gas volume of the gas storage tank according to the product of the first pressure value and the first volume;

[0095] S3013, determining the air spring volume of each air spring according to the second pressure value and the second volume of each air spring;

[0096] S3014, summing up the air spring volumes of the multiple air springs to obtain a total air spring volume of the multiple air springs;

[0097] S3015, determining the actual total gas volume of the air suspension cavity and the adjustment mechanism cavity according to the sum of the gas volume of the gas tank and the total air spring gas volume.

[0098] In some embodiments, when obtaining the actual total gas volume of the regulating mechanism, it is necessary to determine the gas volumes corresponding to the gas tank and the air spring respectively to accurately determine the actual total gas volume.

[0099] In some embodiments, when determining the air volume of the air tank or the air spring, it can be determined according to the following formula (1):

[0100] S=P*V (1)

[0101] Among them, S represents the gas volume of the gas tank or air spring, P represents the pressure of the gas tank or air spring, and V represents the volume of the gas tank or air spring.

[0102] Specifically, in some embodiments, in order to accurately determine the first pressure value of the gas storage tank to determine the precise gas volume of the gas storage tank, in S3011, obtaining the first pressure value of the gas storage tank may include:

[0103] When the air storage tank is in communication with at least one air spring, obtaining a first detection pressure value of the air storage tank in a first target state;

[0104] determining the first detected pressure value as a first pressure value;

[0105] When the air storage tank is not connected to the air spring and the outside world, the most recent first historical pressure value of the air storage tank is obtained;

[0106] A first historical pressure value is determined as a first pressure value.

[0107] In this embodiment, when obtaining the first pressure value, since the suspension controller automatically stores the first pressure value of the air tank after adjusting the height of the air suspension, when obtaining the first pressure value of the air tank, the first pressure value stored by the suspension controller can be directly obtained. However, when the air tank exchanges gas with the air spring or the outside world, since the gas volume of the air tank changes, it is also necessary to determine whether the air tank exchanges gas with the air spring or the outside world to accurately determine the actual total gas volume.

[0108] Therefore, in this embodiment, when obtaining the first pressure value, different methods need to be used to determine the first pressure value according to different states of the gas storage tank.

[0109] Specifically, when the air tank is connected to at least one air spring, it means that the air tank and the air spring exchange air volume at this time, so it is necessary to obtain the first detection pressure value of the air tank under the first target state, wherein the first target state includes that the air tank is connected to the air pressure sensor arranged on the pneumatic pipeline, and multiple air springs are in a state isolated from the outside world.

[0110] In this embodiment, when obtaining the first detection pressure value, the suspension controller can control the first exhaust solenoid valve and the second intake solenoid valve to open, and control the switch solenoid valve corresponding to at least one air spring connected to the air tank to close. At this time, the air tank is connected to the air pressure sensor, and the first detection pressure value of the air tank at this time can be detected by the air pressure sensor, and then the first detection pressure value is determined as the first pressure value.

[0111] In some other embodiments, when the air tank is not connected to the air spring and the outside world, at this time, the air tank is not connected to other cavities, so the most recent first historical pressure value of the air tank can be obtained, and the first historical pressure value can be determined as the first pressure value. The most recent first historical pressure value can be the pressure value stored in the suspension controller after the last adjustment.

[0112] When calculating the gas volume of the gas storage tank, the first volume of the gas storage tank is constant, so the gas volume of the gas storage tank can be determined by multiplying the first pressure value by the first volume.

[0113] In some other embodiments, in order to accurately determine the actual pressure value, obtaining the second pressure value of the air spring may include:

[0114] When the air spring is not connected to the air tank or the outside world, the most recent second historical pressure value of the air spring is obtained;

[0115] determining the second historical pressure value as the second pressure value;

[0116] When the air spring is connected to the air tank or the outside, obtaining a second detection pressure value of the air spring in a second target state, wherein the second target state includes a state in which the air spring is connected to the air pressure sensor and the air spring is isolated from the air tank or the outside;

[0117] The second detected pressure value is determined as a second pressure value of the air spring.

[0118] In this embodiment, when the air spring is not connected to the air tank and the outside world, the air spring is not connected to other cavities at this time, so the most recent second historical pressure value of the air spring can be obtained, and the second historical pressure value can be determined as the second pressure value. The most recent second historical pressure value can be the pressure value stored in the suspension controller after the last adjustment.

[0119] In some other embodiments, when the air spring is connected to an air tank or the outside world, it means that the air spring exchanges gas with other cavities at this time. The second pressure value stored in the suspension controller cannot represent the second pressure value of the air spring at this time, and detection is required.

[0120] That is, a second detection pressure value of the air spring in a second target state can be obtained, wherein the second target state includes a state in which the air spring is connected to the air pressure sensor and the air spring is isolated from the air tank or the outside world.

[0121] In this embodiment, in order to ensure a more accurate second pressure value, the suspension controller can control the second intake solenoid valve and the second exhaust solenoid valve to close, and then control the corresponding switch solenoid valve to open, so that the air spring is connected to the air pressure sensor. The air pressure sensor detects the second detection pressure value of the air spring, and then determines the second detection pressure value as the second pressure value.

[0122] In some other embodiments, when at least one air spring is connected to an air storage tank or the outside, S3011 may include:

[0123] After obtaining the second pressure value of each air spring and the second volume of the corresponding air spring, the first pressure value of the air storage tank and the first volume of the air storage tank are obtained.

[0124] In this embodiment, when the air spring exchanges gas volume with other chambers, or when the air tank exchanges gas volume with other chambers, it means that the pressures corresponding to the air spring and the air tank need to be changed, and the second pressure value and the first pressure value need to be remeasured in the above manner.

[0125] When measuring air tanks or air springs, Figure 2 Due to the limitations of the pneumatic connection diagram shown, in order to avoid excess air from entering the air spring when measuring the air tank, it is necessary to measure the second pressure value of the air spring first, and then measure the first pressure value of the air tank after the measurement is completed, so as to ensure the accuracy of the measurement.

[0126] In some other embodiments, in order to more accurately determine the air volume of the air spring, obtaining the second volume of the air spring may include:

[0127] Get the detection height value of the air spring;

[0128] Based on the detected height value, a second volume corresponding to the air spring is determined.

[0129] When determining the air volume of the air spring, the volume of the air spring also needs to be determined according to the above formula (1). Since the volume of the air spring may change at any time, in order to obtain the volume of the air spring, the volume can be determined by the height of the air spring, that is, the second volume of the air spring can be determined by detecting the height value of the air spring through a height sensor provided on the air suspension, so as to accurately determine the second volume of the air spring.

[0130] The air volume of the air spring is then determined by calculating the second volume and the second pressure value, and the actual total gas volume of the cavity and the regulating mechanism of the air suspension is accurately determined by calculating the sum of the air volume of the air spring and the air volume of the air tank.

[0131] Reference Figure 5 In some other embodiments, in order to achieve adaptive height adjustment of the air suspension, in S301, obtaining the target height level of the air suspension may include:

[0132] S501, obtaining multiple historical height levels of the air suspension;

[0133] S502, counting the number of times each historical height level is used;

[0134] S503, selecting the historical altitude level corresponding to the most times of use as the target altitude level;

[0135] S504, determining a total target gas volume corresponding to the target altitude level according to a correspondence between the altitude level and the gas volume;

[0136] S505, when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the air suspension and the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold;

[0137] S506, based on the target height level and the actual total gas volume after adjustment, control the adjustment mechanism to adjust the height of the air suspension.

[0138] In this embodiment, when determining the target height level, multiple historical height levels of the vehicle user's historical entry and exit can be used, and then the number of times each historical height level is used can be counted, and the historical height level corresponding to the largest number of times is used as the target height level to achieve the determination of an adaptive target height.

[0139] In some other embodiments, taking the example that the historical height levels may include the first height level, the second height level and the third height level, the heights corresponding to the first height level, the second height level and the third height level increase in sequence, and the total target gas volume corresponding to the second height level is the initial gas volume set by the suspension controller, the total target gas volume corresponding to the first height level may be a gas volume that is smaller than the initial gas volume by a preset offset value, and the total target gas volume corresponding to the second height level may be a gas volume that is larger than the initial gas volume by a preset offset value.

[0140] In some other embodiments, steps S504-S506 are consistent with steps S302-S304, and are not further elaborated here.

[0141] As an example, see Figure 6 , Figure 6 A specific example is shown, and the air suspension height adjustment method may include:

[0142] S601, selecting the historical altitude level corresponding to the most times of use as the target altitude level;

[0143] S602, determining a total target gas volume corresponding to the target altitude level according to a correspondence between the altitude level and the gas volume;

[0144] S603, when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the air suspension and the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold;

[0145] S604, based on the target height level and the actual total gas volume after adjustment, control the adjustment mechanism to adjust the height of the air suspension.

[0146] In this embodiment, in S601, the historical height level may be the first height level, the second height level, and the third height level mentioned above.

[0147] In S602, the total target gas volumes corresponding to the first height level, the second height level, and the third height level are the first gas volume, the second gas volume, and the third gas volume, respectively.

[0148] In S603, when the first gas amount is determined to be the total target gas amount, the actual total gas amount may be increased, and when the second gas amount is determined to be the total target gas amount, the actual total gas amount may be decreased.

[0149] In some other embodiments, since the actual total gas volume needs to be adjusted according to the determined target height level, but the height of the air suspension varies, when the actual total gas volume is less than the total target gas volume, and the difference between the actual total gas volume and the total total gas volume is greater than a preset threshold, S303 may include:

[0150] The compressor is controlled to start, and the gas storage tank is controlled to be connected to the outside world to adjust the actual total gas volume of the cavity of the regulating mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold.

[0151] Specifically, when adjusting the actual total gas volume to increase the height of the air suspension, the suspension controller can control the conduction solenoid valve and the first intake solenoid valve to open, and the remaining solenoid valves to close, and at the same time control the compressor to start so that the compressor draws outside air into the air tank, so that the difference between the actual total gas volume after adjustment and the total target gas volume is less than or equal to a preset threshold, thereby preparing for the subsequent adjustment of the height of the air suspension.

[0152] In some other embodiments, when the actual total gas volume is greater than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, S303 may further include:

[0153] Control the compressor to start, and control at least one air spring to be connected to the outside world, so that the air in the air spring can enter the outside world, so as to adjust the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value.

[0154] In this embodiment, when the actual total gas volume is greater than the total target gas volume, it means that the gas volume in the cavity of the air suspension and the cavity of the adjustment mechanism is higher than the total target gas volume, and part of the gas volume needs to be exhausted to the outside. At this time, the gas in the air spring can be exhausted to the outside first, and then the gas in the gas tank can be exhausted to the outside to achieve the adjustment of the actual total gas volume.

[0155] Specifically, the suspension controller can control the second exhaust solenoid valve and the switch solenoid valve and the conduction solenoid valve corresponding to the air spring that needs to be exhausted to open, so that the air in the air spring can enter the outside to adjust the actual total gas volume in the cavity of the adjustment mechanism.

[0156] In other embodiments, when exhausting the air of the regulating mechanism to the outside, the descent speed of the air suspension can be obtained, and the opening degree of the compressor can be adjusted according to the descent speed to ensure that the speed of the air suspension is reduced as quickly as possible.

[0157] Based on the air suspension height control method provided in the above embodiment, the present application also provides an air suspension height control device accordingly. Figure 7 .

[0158] Figure 7 An air suspension height control device 700 is shown, which is applied to a suspension controller of the above-mentioned air suspension system. The air suspension system also includes an air suspension and an adjustment mechanism. The cavity of the adjustment mechanism contains gas for adjusting the height of the air suspension. The air suspension height control device 700 may include:

[0159] An acquisition module 701 is used to acquire a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and in a cavity of an adjustment mechanism;

[0160] A determination module 702 is used to determine a total target gas volume corresponding to a target altitude level according to a correspondence between the altitude level and the gas volume;

[0161] The regulating module 703 is used to regulate the actual total gas volume in the cavity of the air machine and the cavity of the regulating mechanism when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold;

[0162] The control module 704 is used to control the adjustment mechanism to adjust the height of the air suspension based on the target height level and the actual total gas volume after adjustment.

[0163] As an optional implementation, the acquisition module 701 may be specifically used for:

[0164] Obtain the actual total gas volume in the cavity of the regulating mechanism, including:

[0165] Acquire a first pressure value and a first volume of the air storage tank, and a second pressure value and a second volume of each air spring;

[0166] Determining the gas volume of the gas storage tank according to the product of the first pressure value and the first volume;

[0167] Determining the air spring volume of each air spring according to the second pressure value and the second volume of each air spring;

[0168] Summing the air spring volumes of the multiple air springs to obtain a total air spring volume of the multiple air springs;

[0169] The actual total gas volume of the cavity of the regulating mechanism is determined based on the sum of the gas volume of the gas tank and the total air spring gas volume.

[0170] As an optional implementation, the acquisition module 701 may also be specifically used for:

[0171] When the air storage tank is connected to at least one air spring, a first detection pressure value of the air storage tank under a first target state is obtained, wherein the first target state includes that the air storage tank is connected to an air pressure sensor disposed on a pneumatic pipeline, and the plurality of air springs are in a state of being isolated from the outside;

[0172] determining the first detected pressure value as a first pressure value;

[0173] When the air storage tank is not connected to the air spring and the outside world, the most recent first historical pressure value of the air storage tank is obtained;

[0174] A first historical pressure value is determined as a first pressure value.

[0175] As an optional implementation, the acquisition module 701 may also be specifically used for:

[0176] When the air spring is not connected to the air tank or the outside world, the most recent second historical pressure value of the air spring is obtained;

[0177] determining the second historical pressure value as the second pressure value;

[0178] When the air spring is connected to the air tank or the outside, obtaining a second detection pressure value of the air spring in a second target state, wherein the second target state includes a state in which the air spring is connected to the air pressure sensor and the air spring is isolated from the air tank or the outside;

[0179] The second detected pressure value is determined as a second pressure value of the air spring.

[0180] As an optional implementation, when at least one air spring is connected to an air storage tank or the outside, the acquisition module 701 may also be specifically used for:

[0181] After obtaining the second pressure value of each air spring and the second volume of the corresponding air spring, the first pressure value of the air storage tank and the first volume of the air storage tank are obtained.

[0182] As an optional implementation, the acquisition module 701 may also be specifically used for:

[0183] Get multiple historical height levels of the air suspension;

[0184] Count the number of times each historical height level is used;

[0185] The historical altitude level corresponding to the most times of use is selected as the target altitude level.

[0186] As an optional implementation,

[0187] When the actual total gas volume is less than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, the adjustment module 703 may also be specifically used to:

[0188] Controlling the compressor to start, and controlling the air storage tank to communicate with the outside, so as to adjust the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value;

[0189] When the actual total gas volume is less than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, the adjustment module 703 may also be specifically used to:

[0190] Control the compressor to start, and control at least one air spring to be connected to the outside world, so that the air in the air spring can enter the outside world, so as to adjust the actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value.

[0191] Figure 8 A schematic diagram of the hardware structure of the suspension controller provided in an embodiment of the present application is shown.

[0192] The suspension controller may include a processor 801 and a memory 802 storing computer program instructions.

[0193] Specifically, the processor 801 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0194] The memory 802 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 802 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In an example, the memory 802 may include a removable or non-removable (or fixed) medium, or the memory 802 is a non-volatile solid-state memory. The memory 802 may be inside or outside the integrated gateway disaster recovery device.

[0195] In one example, the memory 802 may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0196] The memory 802 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the air suspension height control method according to the first aspect of the present disclosure.

[0197] The processor 801 reads and executes the computer program instructions stored in the memory 802 to implement Figure 3 An air suspension height control method in the illustrated embodiment.

[0198] In one example, the suspension controller may further include a communication interface 803 and a bus 804. Figure 8 As shown, the processor 801, the memory 802, and the communication interface 803 are connected via a bus 804 and communicate with each other.

[0199] The communication interface 803 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0200] Bus 804 includes hardware, software or both, and the parts of suspension controller are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (Accelerated Graphics Port, AGP) or other graphics bus, enhanced industry standard architecture (Extended Industry Standard Architecture, EISA) bus, front side bus (Front Side Bus, FSB), hypertransmission (Hyper Transport, HT) interconnection, industry standard architecture (IndustryStandard Architecture, ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 804 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0201] The suspension controller can execute the air suspension height control method in the embodiment of the present application, thereby realizing the combination of Figure 3-Figure 7 An air suspension height control method and apparatus are described.

[0202] In addition, in combination with the air suspension height control method in the above embodiments, the present application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any of the air suspension height control methods in the above embodiments is implemented.

[0203] In an optional embodiment, in combination with the air suspension height control method in the above embodiments, the embodiment of the present application can provide a computer program product for implementation, and the instructions in the computer program product are executed by the processor of the suspension controller, so that the suspension controller can implement any one of the air suspension height control methods in the above embodiments.

[0204] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0205] The functional blocks shown in the above block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0206] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0207] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram 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, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0208] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A method for controlling the height of an air suspension, characterized in that: A suspension controller applied to an air suspension system, the air suspension system further comprising an air suspension and an adjustment mechanism, the adjustment mechanism being electrically connected to the suspension controller, the cavity of the adjustment mechanism containing gas for adjusting the height of the air suspension, the method comprising: obtaining a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and in a cavity of the adjustment mechanism; Determining a total target gas volume corresponding to the target altitude level according to a corresponding relationship between the altitude level and the gas volume; When the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the air suspension and in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold; Based on the target height level and the adjusted actual total gas volume, the adjustment mechanism is controlled to operate so as to adjust the height of the air suspension.

2. The method according to claim 1, characterized in that The regulating mechanism includes an air tank, the air suspension includes air springs arranged corresponding to the vehicle wheels, and the air tank and the plurality of air springs are connected via a pneumatic pipeline; Obtaining the actual total amount of gas in the cavity of the air suspension and in the cavity of the adjustment mechanism, including: Acquire a first pressure value and a first volume of the air storage tank, and a second pressure value and a corresponding second volume of each air spring; Determining the gas volume of the gas storage tank according to the product of the first pressure value and the first volume; Determining the air volume of each of the air springs according to the second pressure value and the second volume of each of the air springs; Summing the air spring volumes of the plurality of air springs to obtain a total air spring volume of the plurality of air springs; The actual total gas volume of the cavity of the air suspension and the cavity of the adjustment mechanism is determined according to the sum of the gas volume of the gas tank and the total gas volume of the air spring.

3. The method according to claim 2, characterized in that Obtaining a first pressure value of the gas storage tank includes: When the air storage tank is connected to at least one of the air springs, a first detection pressure value of the air storage tank under a first target state is obtained, wherein the first target state includes that the air storage tank is connected to an air pressure sensor disposed on the pneumatic pipeline, and the plurality of air springs are in a state of being isolated from the outside world; determining the first detected pressure value as a first pressure value; When the air storage tank is not connected to the air spring and the outside world, obtaining the most recent first historical pressure value of the air storage tank; The first historical pressure value is determined as a first pressure value.

4. The method according to claim 3, characterized in that: Obtain the second pressure value of each air spring, including: When the air spring is not connected to the air storage tank or the outside, obtaining a most recent second historical pressure value of the air spring; determining the second historical pressure value as a second pressure value; When the air spring is in communication with the air tank or the outside, obtaining a second detection pressure value of the air spring in a second target state, wherein the second target state includes a state in which the air spring is in communication with the air pressure sensor and the air spring is isolated from the air tank or the outside; The second detected pressure value is determined as a second pressure value of the air spring.

5. The method according to any one of claims 2 to 4, characterized in that: In a case where at least one of the air springs is in communication with the air tank or the outside, obtaining a first pressure value of the air tank and a first volume of the air tank, as well as a second pressure value of each of the air springs and a corresponding second volume of the air spring, comprises: After obtaining the second pressure value of each of the air springs and the second volume of the corresponding air spring, the first pressure value of the air storage tank and the first volume of the air storage tank are obtained.

6. The method according to claim 2, characterized in that Obtaining a second volume of the air spring includes: Obtaining a detection height value of the air spring; Based on the detected height value, a second volume corresponding to the air spring is determined.

7. The method according to claim 1, characterized in that Obtaining a target height level of the air suspension, including: obtaining a plurality of historical height levels of the air suspension; Count the number of times each historical height level is used; The historical altitude level corresponding to the most times of use is selected as the target altitude level.

8. The method according to claim 2, characterized in that: The regulating mechanism further comprises a compressor, and the compressor is arranged on the pneumatic pipeline; In a case where the actual total gas volume is less than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold, comprises: Controlling the compressor to start, and controlling the gas storage tank to communicate with the outside, so as to adjust the actual total gas volume of the cavity of the regulating mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value; In a case where the actual total gas volume is greater than the total target gas volume, and the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, adjusting the actual total gas volume in the cavity of the adjustment mechanism so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold, comprises: Control the compressor to start, and control at least one of the air springs to be connected to the outside world, so that the air in the air spring can enter the outside world, so as to adjust the actual total gas volume in the cavity of the regulating mechanism, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to a preset threshold value.

9. An air suspension height control device, characterized in that: A suspension controller applied to an air suspension system, the air suspension system further comprising an air suspension and an adjustment mechanism, the cavity of the adjustment mechanism containing gas for adjusting the height of the air suspension, the device comprising: an acquisition module, configured to acquire a target height level of the air suspension and an actual total amount of gas in a cavity of the air suspension and in a cavity of the adjustment mechanism; A determination module, configured to determine a total target gas volume corresponding to the target altitude level according to a correspondence between the altitude level and the gas volume; an adjusting module, configured to adjust the actual total gas volume in the cavity of the air suspension and in the cavity of the adjusting mechanism when the difference between the actual total gas volume and the total target gas volume is greater than a preset threshold, so that the difference between the adjusted actual total gas volume and the total target gas volume is less than or equal to the preset threshold; The control module is used to control the adjustment mechanism to operate based on the target height level and the actual total gas volume after adjustment, so as to adjust the height of the air suspension.

10. A suspension controller, characterized in that: The suspension controller includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the air suspension height control method according to any one of claims 1 to 8 is implemented.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the air suspension height control method according to any one of claims 1 to 8 is implemented.

12. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of a suspension controller, the suspension controller executes the air suspension height control method according to any one of claims 1 to 8.

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