Inflation and deflation method of air suspension

Abstract

The invention provides an inflation and deflation method of an air suspension, and belongs to the technical field of suspension control, the inflation and deflation method of the air suspension comprises the following steps: in response to a received height adjustment request, selecting an inflation and deflation mode according to the height adjustment request; the height adjustment request at least comprises one of adjustment time, adjustment height and adjustment direction; the inflation and deflation mode at least comprises one of a low-speed mode, a mixed mode and a high-speed mode; and according to the inflation and deflation mode and the ratio of the pressure of the air spring to the pressure of the air storage tank, starting and stopping of the compressor are controlled so that inflation and deflation of the air suspension can be completed. The invention further provides an inflation and deflation system and device of the air suspension and a storage medium. The inflation and deflation modes are selected according to the adjusting time, and energy consumption and the use frequency of the compressor are reduced.

Description

Technical Field

[0001] This invention relates to the field of suspension control technology, and in particular to a method for inflating and deflating air suspension. Background Technology

[0002] Air suspension systems are generally equipped with an air supply system to enable vehicle height adjustment. An air suspension system consists of air springs, an air pump, a distribution valve, an air tank, and a controller. Based on the degree of air exchange between the system and the outside air, air suspension systems can be divided into open systems and closed systems. In a closed air suspension system, the air tank contains compressed air at a certain pressure. Current inflation / deflation control strategies activate the compressor when the vehicle needs to be raised, pumping compressed air from the air tank into the air springs; when the vehicle needs to be lowered, the compressor activates, pumping compressed air from the air springs into the air tank. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes an air suspension inflation and deflation method that adds an air suspension mode selection based on the input adjustment time to the existing closed air suspension inflation and deflation method.

[0004] In a first aspect, embodiments of the present invention provide a method for inflating and deflating an air suspension, comprising: responding to receiving a height adjustment request, selecting an inflation / deflation mode according to the height adjustment request; the height adjustment request includes at least one of adjustment time, adjustment height, and adjustment direction; the inflation / deflation mode includes at least one of a slow mode, a mixed mode, and a fast mode; and controlling the starting and stopping of a compressor to complete the inflation and deflation of the air suspension according to the inflation / deflation mode and the ratio of air spring pressure to air tank pressure.

[0005] According to an embodiment of the present invention, selecting an inflation / deflation mode based on a height adjustment request includes: selecting a slow mode in response to an adjustment time between a first time and a second time; selecting a mixed mode in response to an adjustment time between a second time and a third time; and selecting a fast mode in response to an adjustment time between a third time and a fourth time; wherein the first time, second time, third time, and fourth time are ordered from largest to smallest as first time, second time, third time, and fourth time.

[0006] According to an embodiment of the present invention, controlling the start and stop of the compressor based on the inflation / deflation mode and the ratio of air spring pressure to air tank pressure includes: in response to the inflation / deflation mode being a slow mode or a mixed mode, controlling the start and stop of the compressor based on the relationship between the ratio of air spring pressure to air tank pressure and a preset calibration value, so as to control the suspension according to the adjustment height and adjustment direction.

[0007] According to an embodiment of the present invention, the starting and stopping of the compressor is controlled by the relationship between the ratio of the air spring pressure to the air tank pressure and a preset calibration value, including: in response to the charging / discharging mode being a mixed mode and the adjustment direction being the height increase, the following steps are performed: in response to the ratio of the air spring pressure to the air tank pressure being greater than a first calibration value, a first flag is output to control the compressor to remain off and control the suspension through differential pressure; in response to the ratio of the air spring pressure to the air tank pressure being greater than a second calibration value and less than the first calibration value, a second flag is output to control the suspension through differential pressure and starting the compressor; in response to the ratio of the air spring pressure to the air tank pressure being less than the second calibration value, an output is performed. The third flag is used to immediately start the compressor for height adjustment based on the adjusted height. In response to the mixed charging / discharging mode and the adjustment direction being lowering the height, the following steps are executed: If the ratio of air spring pressure to air tank pressure is greater than the fourth calibration value, the fourth flag is output to keep the compressor off and control the suspension via differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the fifth calibration value and less than the fourth calibration value, the fifth flag is output to control the suspension via differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the fifth calibration value, the sixth flag is output to immediately start the compressor for height adjustment based on the adjusted height.

[0008] According to an embodiment of the present invention, the compressor's start and stop are controlled by the relationship between the ratio of air spring pressure to air tank pressure and a preset calibration value, including: in response to the charging / discharging mode being slow mode and the adjustment direction being height increase, the following steps are performed: in response to the ratio of air spring pressure to air tank pressure being greater than the eleventh calibration value, a first flag is output to control the compressor to remain off and control the suspension through differential pressure; in response to the ratio of air spring pressure to air tank pressure being greater than the twelfth calibration value and less than the eleventh calibration value, a second flag is output to control the suspension through differential pressure and starting the compressor; in response to the ratio of air spring pressure to air tank pressure being less than the twelfth calibration value, a second flag is output. The third flag is used to immediately start the compressor for height adjustment based on the adjusted height. In response to the slow charging / discharging mode and the adjustment direction being lowering the height, the following steps are executed: If the ratio of air spring pressure to air tank pressure is greater than the fourteenth calibration value, the fourth flag is output to keep the compressor off and control the suspension via differential pressure; if the ratio of air spring pressure to air tank pressure is greater than the fifteenth calibration value but less than the fourteenth calibration value, the fifth flag is output to control the suspension via differential pressure and starting the compressor; if the ratio of air spring pressure to air tank pressure is less than the fifteenth calibration value, the sixth flag is output to immediately start the compressor for height adjustment based on the adjusted height.

[0009] According to an embodiment of the present invention, controlling the suspension by differential pressure and activating the compressor includes: activating the compressor to continue controlling the suspension in response to the ratio of air spring pressure to air tank pressure reaching a preset threshold; the preset threshold includes at least one of raising the slow threshold, lowering the slow threshold, raising the mixing threshold, and lowering the mixing threshold.

[0010] According to an embodiment of the present invention, controlling the start and stop of the compressor based on the charging / discharging mode and the ratio of air spring pressure to air tank pressure includes: in response to the charging / discharging mode being a fast mode, immediately starting the compressor to adjust the height according to the adjustment height and adjustment direction.

[0011] A second aspect of the present invention provides an air suspension inflation / deflation system, which can be used to implement an air suspension inflation / deflation method. The system includes: a mode selection module, configured to select an inflation / deflation mode in response to receiving a height adjustment request; the height adjustment request includes at least one of adjustment time, adjustment height, and adjustment direction; the inflation / deflation mode includes at least one of a slow mode, a mixed mode, and a fast mode; and a suspension control module, configured to control the starting and stopping of a compressor to complete the inflation / deflation of the air suspension based on the inflation / deflation mode and the ratio of air spring pressure to air tank pressure.

[0012] A third aspect of the present invention provides an electronic device comprising: one or more processors; and a memory for storing one or more programs, wherein, when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to perform the above-described air suspension inflation / deflation method.

[0013] A fourth aspect of the present invention also provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, cause the processor to perform the above-described air suspension inflation / deflation method.

[0014] The air suspension inflation / deflation method provided by this invention maps height adjustment requests to three inflation / deflation modes based on adjustment time, achieving intelligent matching between user needs and inflation / deflation strategies. By controlling compressor usage based on the pressure ratio between the air spring and the air tank and the inflation / deflation modes, the method achieves the technical effects of reducing energy consumption and compressor usage frequency. Attached Figure Description

[0015] Figure 1 A schematic flowchart illustrating an air suspension inflation / deflation method provided in an embodiment of the present invention;

[0016] Figure 2 This is a flowchart illustrating an optional specific implementation method of step S1 in an embodiment of the present invention;

[0017] Figure 3This is a flowchart illustrating an optional specific implementation method of step S2 in an embodiment of the present invention;

[0018] Figure 4 This is a structural block diagram of an air suspension inflation / deflation system provided in an embodiment of the present invention;

[0019] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of the present invention, exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0021] Where there is no conflict, the various embodiments of the present invention and the features thereof may be combined with each other.

[0022] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0023] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Terms such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0024] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art and the invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein.

[0025] In the technical solution of this invention, the collection, storage, use, processing, transmission, provision, and disclosure of user personal information all comply with relevant laws and regulations and do not violate public order and good morals. The use of user data in this technical solution follows relevant national laws and regulations (e.g., the "Information Security Technology - Personal Information Security Specification"). For example: appropriate measures are taken for personal information access control; restrictions are imposed on the display of personal information; the purpose of using personal information does not exceed the scope of direct or reasonable association; and explicit identity targeting is eliminated when using personal information to avoid precisely locating a specific individual.

[0026] The design of a closed air spring system must meet the functional requirements of raising and lowering the vehicle body. The automotive height adjustment industry generally offers five height settings: H2, H1, NRH, L1, and L2. When the closed air suspension is at NRH height, both the air spring and the air tank pressure are approximately 8 bar. When the suspension needs to rise, the compressor needs to be activated to force gas from the air tank into the air spring; when the suspension needs to lower, the compressor needs to be activated to force gas from the air spring into the air tank.

[0027] The compressor needs to be activated every time the suspension rises or falls, which increases the compressor's power consumption and has a certain impact on its lifespan. Therefore, through pressure analysis of the air suspension at various heights, the air spring pressure is about 6.5 bar and the air tank pressure is about 11 bar at L2 height; about 7.5 bar and 9 bar at L1 height; about 8 bar and 8 bar at NRH height; about 8.5 bar and 7 bar at H1 height; and about 9 bar and 5 bar at H2 height. From the approximate pressure range, except at NRH height where the air spring and air tank pressures are the same, there is a pressure difference at other heights. However, relying solely on pressure differences to adjust the suspension height is relatively slow. Therefore, this invention proposes to add a height adjustment time requirement and a classification module for judging the ratio of air spring pressure to air tank pressure. In cases where there is a certain pressure ratio and the height adjustment time requirement is slow, the pressure difference is used for self-charging and venting. This method can reduce energy consumption and reduce the frequency of compressor use.

[0028] Figure 1 This is a schematic flowchart of an air suspension inflation / deflation method provided in an embodiment of the present invention, as shown below. Figure 1As shown, an embodiment of the present invention provides a method for inflating and deflating an air suspension, comprising: responding to receiving a height adjustment request, selecting an inflation / deflation mode according to the height adjustment request; the height adjustment request includes at least one of adjustment time, adjustment height, and adjustment direction; the inflation / deflation mode includes at least one of a slow mode, a mixed mode, and a fast mode; and controlling the start and stop of the compressor to complete the inflation and deflation of the air suspension according to the inflation / deflation mode and the ratio of air spring pressure to air tank pressure.

[0029] Through the embodiments of the present invention, a suspension adjustment time strategy judgment is added to the existing closed air suspension inflation and deflation. The inflation and deflation mode is determined according to the suspension adjustment time requirement, and it is further determined whether the suspension height adjustment requires the compressor to be engaged. This can reduce compressor energy consumption and frequent compressor starts, and to a certain extent, can improve the compressor's working time and service life.

[0030] Figure 2 This is a flowchart illustrating an optional specific implementation method of step S1 in an embodiment of the present invention, such as... Figure 2 As shown, the inflation / deflation mode is selected according to the altitude adjustment request, including: slow mode is selected when the adjustment time is between the first time and the second time; mixed mode is selected when the adjustment time is between the second time and the third time; and fast mode is selected when the adjustment time is between the third time and the fourth time. The first time, second time, third time and fourth time are ordered from largest to smallest as first time, second time, third time and fourth time.

[0031] In the embodiments of the present invention, a height adjustment time module is added, which is mainly used to determine the corresponding time of the height adjustment request (this time needs to be calibrated multiple times). This time can be fed back to the IVI (In-Vehicle Infotainment) for the user to select. The user can select one of three modes: slow (energy saving), medium (normal), and fast (energy consuming).

[0032] Figure 3 This is a flowchart illustrating an optional specific implementation method of step S2 in an embodiment of the present invention, as shown below. Figure 3 As shown, the compressor's start and stop are controlled according to the charging / discharging mode and the ratio of air spring pressure to air tank pressure, including: in response to the charging / discharging mode being slow mode or mixed mode, the compressor's start and stop are controlled by the relationship between the ratio of air spring pressure to air tank pressure and a preset calibration value to control the suspension according to the adjustment height and adjustment direction; in response to the charging / discharging mode being fast mode, the compressor is immediately started for height adjustment according to the adjustment height and adjustment direction.

[0033] Through embodiments of the present invention, the frequency of compressor use is reduced by using slow mode and hybrid mode, and rapid response to user needs is achieved by using fast mode.

[0034] Based on the above embodiments, the compressor's start and stop are controlled by the relationship between the ratio of air spring pressure to air tank pressure and a preset calibration value, including: In response to the charging / discharging mode being a mixed mode and the adjustment direction being the height increase, the following steps are executed: In response to the ratio of air spring pressure to air tank pressure being greater than a first calibration value, a first flag is output to control the compressor to remain off and control the suspension via differential pressure; In response to the ratio of air spring pressure to air tank pressure being greater than a second calibration value and less than the first calibration value, a second flag is output to control the suspension via differential pressure and starting the compressor; In response to the ratio of air spring pressure to air tank pressure being less than the second calibration value, a second flag is output. The system outputs a third flag to immediately activate the compressor for height adjustment based on the adjusted height. In response to a mixed charging / discharging mode and a lowering adjustment direction, the following steps are executed: If the ratio of air spring pressure to air tank pressure is greater than the fourth calibration value, the system outputs a fourth flag to keep the compressor off and control the suspension via differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the fifth calibration value but less than the fourth calibration value, the system outputs a fifth flag to control the suspension via differential pressure and by activating the compressor. If the ratio of air spring pressure to air tank pressure is less than the fifth calibration value, the system outputs a sixth flag to immediately activate the compressor for height adjustment based on the adjusted height.

[0035] In this embodiment, when the height request is to increase the height and the adjustment time is set to mixed (normal): the judgment and classification module is entered. When the module outputs a flag of 1 and the pressure ratio of the air spring pressure to the air tank is higher than the calibration value of 1, it is assumed that the height request can be achieved by using differential pressure through module calculation. The valve control module can then achieve the corresponding function without starting the compressor. When the module outputs a flag of 2 and the pressure ratio of the air spring pressure to the air tank is lower than the calibration value of 1 but higher than the calibration value of 2, it belongs to the mixed inflation function. In this state, the pressure ratio needs to be monitored. When the value reaches the threshold of 1 (this value is slightly higher than the calibration value of 2 because it takes time for the compressor to start and work. To meet the corresponding height requirements, the compressor needs to be started in advance), the compressor is prepared to be activated, and the compressor control is then handed over. When the module outputs a flag of 3 and the pressure ratio of the air spring pressure to the air tank is lower than the calibration value of 2, it is assumed that the height request can be achieved by starting the compressor through module calculation.

[0036] In this embodiment, when the altitude request is to reduce altitude and the adjustment time is set to mixed (normal): when the module output flag is 4 and the pressure ratio of the air spring pressure to the air tank is higher than the calibrated value of 4, it means that the altitude request can be achieved by the module calculation using differential pressure, and the valve control module can achieve the corresponding function without starting the compressor; when the module output flag is 5 and the pressure ratio of the air spring pressure to the air tank is lower than the calibrated value of 4 but higher than the calibrated value of 5, it belongs to the mixed venting function. In this state, the pressure ratio needs to be monitored. When the value reaches the threshold 2 (this value is slightly higher than the calibrated value of 5, because it takes time for the compressor to start and work, and the compressor needs to be started in advance to meet the corresponding altitude requirements), the compressor is prepared to be activated, and the compressor control is handed over to the compressor; when the module output flag is 6 and the pressure ratio of the air spring pressure to the air tank is lower than the calibrated value of 5, it means that the altitude request can be achieved by the module calculation, and the compressor must be started.

[0037] Based on the above embodiments, the compressor's start and stop are controlled by the relationship between the ratio of air spring pressure to air tank pressure and a preset calibration value. This includes: in response to the charging / discharging mode being slow mode and the adjustment direction being height increase, the following steps are executed: in response to the ratio of air spring pressure to air tank pressure being greater than the eleventh calibration value, a first flag is output to control the compressor to remain off and control the suspension via differential pressure; in response to the ratio of air spring pressure to air tank pressure being greater than the twelfth calibration value and less than the eleventh calibration value, a second flag is output to control the suspension via differential pressure and starting the compressor; in response to the ratio of air spring pressure to air tank pressure being less than the twelfth calibration value, a second flag is output. The third flag is output to immediately start the compressor for height adjustment based on the adjusted height. In response to the slow charging / discharging mode and the adjustment direction being lowering the height, the following steps are executed: If the ratio of air spring pressure to air tank pressure is greater than the fourteenth calibration value, the fourth flag is output to keep the compressor off and control the suspension via differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the fifteenth calibration value but less than the fourteenth calibration value, the fifth flag is output to control the suspension via differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the fifteenth calibration value, the sixth flag is output to immediately start the compressor for height adjustment based on the adjusted height.

[0038] In this embodiment, when the height request is to increase the height and the adjustment time is set to slow (energy saving): the judgment and classification module is entered. When the module outputs a flag of 1 and the pressure ratio of the air spring pressure to the air tank is higher than the calibration value 11 (this value is lower than the calibration value 1 mentioned above), it is assumed that the height request can be achieved by using differential pressure through module calculation. However, the differential pressure threshold is lower than that of the mixed mode, so the adjustment time will be longer than that of the normal mode. The valve control module can achieve the corresponding function without starting the compressor. When the module outputs a flag of 2 and the pressure ratio of the air spring pressure to the air tank is lower than the calibration value 11 but higher than the calibration value 22, it belongs to the mixed air charging function. In this state, the pressure ratio needs to be monitored. When the value reaches the threshold 11 (this value is slightly higher than the calibration value 22 because it takes time for the compressor to start and work. In order to meet the corresponding height requirements, the compressor needs to be started in advance), the compressor is prepared to be activated and then controlled by the compressor. When the module outputs a flag of 3 and the pressure ratio of the air spring pressure to the air tank is lower than the calibration value 22, it is assumed that the height request can be achieved by starting the compressor through module calculation.

[0039] In this embodiment, when the height request is to reduce the height and the adjustment time is set to slow (energy saving): when the module output flag is 4 and the pressure ratio of the air spring pressure to the air tank is higher than the calibrated value of 44, it means that the height request can be achieved by the module calculation using differential pressure, and the valve control module can achieve the corresponding function without starting the compressor; when the module output flag is 5 and the pressure ratio of the air spring pressure to the air tank is lower than the calibrated value of 44 but higher than the calibrated value of 55, it belongs to the mixed air release function. In this state, the pressure ratio needs to be monitored. When the value reaches the threshold of 22 (this value is slightly higher than the calibrated value of 55, because it takes time for the compressor to start and work, and the compressor needs to be started in advance to meet the corresponding height requirements), the compressor is prepared to be activated, and the compressor control is handed over to the compressor; when the module output flag is 6 and the pressure ratio of the air spring pressure to the air tank is lower than the calibrated value of 55, it means that the height request can be achieved by the module calculation, and the compressor must be started.

[0040] In this embodiment of the invention, a classification module is added. This module primarily distinguishes between three modes of altitude adjustment—differential pressure self-charging / discharging, mixed charging / discharging, and compressor-starting charging / discharging—based on the output of a flag. The time module outputs the pressure ratio and the charging / discharging mode flag. By ensuring that the pressure ratio calibration value in slow mode (without compressor activation) is lower than that in mixed mode, user needs are met while further reducing energy consumption. Furthermore, by monitoring the pressure ratio in real time, the compressor is preemptively activated when differential pressure cannot achieve altitude adjustment, improving the user experience.

[0041] Based on the above embodiments, the suspension is controlled by differential pressure and starting the compressor, including: in response to the ratio of air spring pressure to air tank pressure reaching a preset threshold, the compressor is started to continue controlling the suspension; the preset threshold includes at least one of raising the slow threshold, lowering the slow threshold, raising the mixing threshold, and lowering the mixing threshold.

[0042] In the embodiments of the present invention, the preset threshold is determined based on the calibration value. Referring to the preceding text, when increasing the slow speed, the preset threshold is slightly higher than the calibration value 22; when decreasing the slow speed, the preset threshold is slightly higher than the calibration value 55; when increasing the mixing speed, the preset threshold is slightly higher than the calibration value 2; and when decreasing the mixing speed, the preset threshold is slightly higher than the calibration value 5. Therefore, by starting the compressor in advance, when the compressor is required to participate in height adjustment, it can immediately join the adjustment, thus accelerating the adjustment efficiency.

[0043] Figure 4 This is a structural block diagram of an air suspension inflation / deflation system provided in an embodiment of the present invention, as shown below. Figure 4 As shown, a second aspect of the present invention provides an air suspension inflation / deflation system, which can be used to implement an air suspension inflation / deflation method. The system includes: a mode selection module, configured to select an inflation / deflation mode in response to receiving a height adjustment request; the height adjustment request includes at least one of adjustment time, adjustment height, and adjustment direction; the inflation / deflation mode includes at least one of slow mode, mixed mode, and fast mode; and a suspension control module, configured to control the start and stop of the compressor to complete the inflation / deflation of the air suspension based on the inflation / deflation mode and the ratio of air spring pressure to air tank pressure.

[0044] Based on the same inventive concept, embodiments of the present invention also provide an electronic device. Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Figure 5 As shown, an embodiment of the present invention provides an electronic device including: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement an air suspension inflation / deflation method as described in any of the above embodiments; the one or more I / O interfaces 103 are connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0045] The processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read / write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (Bus).

[0046] In some embodiments, the processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0047] In some embodiments, the one or more processors 101 include a field-programmable gate array.

[0048] This invention also provides a computer-readable medium. The computer-readable medium stores a computer program, which, when executed by a processor, implements the steps in the inflation / deflation method of any of the air suspensions described in the above embodiments. The computer-readable storage medium may be volatile or non-volatile.

[0049] This invention also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code is run in the processor of an electronic device, the processor in the electronic device executes the above-described air suspension inflation / deflation method.

[0050] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer storage media (or non-transitory media) and communication media (or transient media).

[0051] As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technologies, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable program instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0052] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0053] The computer program instructions used to perform the operations of this invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing state information from the computer-readable program instructions. This electronic circuitry can execute the computer-readable program instructions to implement various aspects of the invention.

[0054] The computer program product described herein can be implemented specifically through hardware, software, or a combination thereof. In one alternative embodiment, the computer program product is specifically embodied in a computer storage medium; in another alternative embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0055] Various aspects of the present invention are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0056] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0057] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0058] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0059] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A method for inflating and deflating air suspension, characterized in that, include: In response to receiving a height adjustment request, an inflation / deflation mode is selected according to the height adjustment request; the height adjustment request includes at least one of adjustment time, adjustment height, and adjustment direction; the inflation / deflation mode includes at least one of slow mode, mixed mode, and fast mode; Based on the inflation / deflation mode and the ratio of air spring pressure to air tank pressure, the compressor is controlled to start and stop to complete the inflation / deflation of the air suspension.

2. The method according to claim 1, wherein, Select the inflation / deflation mode according to the height adjustment request, including: If the adjustment time is between the first and second times, then slow mode is selected; If the adjustment time is between the second and third times, then the hybrid mode is selected; If the adjustment time is between the third and fourth times, then fast mode is selected; The first, second, third, and fourth times are ordered from largest to smallest as follows: first time, second time, third time, and fourth time.

3. The method according to claim 2, wherein, Based on the aforementioned charging / discharging mode and the ratio of air spring pressure to air tank pressure, the compressor is controlled to start and stop, including: In response to the inflation / deflation mode being either slow mode or mixed mode, the compressor's start and stop are controlled by the ratio of the air spring pressure to the air tank pressure and the relationship between the ratio and the preset calibration value, so as to control the suspension according to the adjustment height and adjustment direction.

4. The method according to claim 3, wherein, The compressor's start and stop are controlled by the ratio of air spring pressure to air tank pressure and the relationship between this ratio and a preset calibration value, including: If the inflation / deflation mode is set to mixed mode and the adjustment direction is to increase height, the following steps are performed: If the ratio of air spring pressure to air tank pressure is greater than the first calibration value, the first flag is output to control the compressor to remain off and control the suspension through differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the second calibration value and less than the first calibration value, the second flag is output to control the suspension by controlling the differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the second calibration value, a third flag will be output to immediately start the compressor for height adjustment based on the adjusted height. If the inflation / deflation mode is set to mixed mode and the adjustment direction is set to decrease altitude, the following steps are performed: If the ratio of air spring pressure to air tank pressure is greater than the fourth calibration value, the fourth flag is output to control the compressor to remain off and control the suspension through differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the fifth calibration value but less than the fourth calibration value, the fifth flag is output to control the suspension by controlling the differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the fifth calibration value, the sixth flag will be output to immediately start the compressor for height adjustment based on the adjusted height.

5. The method according to claim 3, wherein, The compressor's start and stop are controlled by the ratio of air spring pressure to air tank pressure and the relationship between this ratio and a preset calibration value, including: If the inflation / deflation mode is set to slow mode and the adjustment direction is to increase height, the following steps are performed: If the ratio of air spring pressure to air tank pressure is greater than the eleventh calibration value, the first flag is output to control the compressor to remain off and control the suspension through differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the twelfth calibration value and less than the eleventh calibration value, the second flag is output to control the suspension by controlling the differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the twelfth calibration value, the third flag will be output to immediately start the compressor for height adjustment based on the adjusted height. If the inflation / deflation mode is set to slow mode and the adjustment direction is to decrease altitude, the following steps are performed: If the ratio of air spring pressure to air tank pressure is greater than the fourteenth calibration value, the fourth flag is output to control the compressor to remain off and control the suspension through differential pressure. If the ratio of air spring pressure to air tank pressure is greater than the fifteenth calibration value and less than the fourteenth calibration value, the fifth flag is output to control the suspension by controlling the differential pressure and starting the compressor. If the ratio of air spring pressure to air tank pressure is less than the fifteenth calibration value, the sixth flag will be output to immediately start the compressor for height adjustment based on the adjusted height.

6. The method according to claim 4 or 5, wherein, The suspension is controlled by differential pressure and by activating the compressor, including: When the ratio of air spring pressure to air tank pressure reaches a preset threshold, the compressor is activated to continue controlling the suspension; the preset threshold includes at least one of raising the slow threshold, lowering the slow threshold, raising the mixing threshold, and lowering the mixing threshold.

7. The method according to claim 2, wherein, Based on the aforementioned charging / discharging mode and the ratio of air spring pressure to air tank pressure, the compressor is controlled to start and stop, including: If the inflation / deflation mode is in rapid mode, the compressor will be started immediately to adjust the height based on the height and direction of adjustment.

8. An air suspension inflation / deflation system, capable of implementing the air suspension inflation / deflation method as described in claim 1, characterized in that, The system includes: A mode selection module is used to select an inflation / deflation mode in response to receiving an altitude adjustment request; the altitude adjustment request includes at least one of adjustment time, adjustment altitude, and adjustment direction; the inflation / deflation mode includes at least one of slow mode, mixed mode, and fast mode. The suspension control module is used to control the start and stop of the compressor to complete the inflation and deflation of the air suspension according to the inflation / deflation mode and the ratio of air spring pressure to air tank pressure.

9. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in claim 1.

10. A computer-readable medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method as described in claim 1.

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