Vehicle suspension calibration method and device, vehicle and storage medium

Abstract

The invention relates to a vehicle suspension calibration method and device, a vehicle and a storage medium, and the method comprises the steps: receiving an adjustment trigger signal of an air suspension of the vehicle; generating an air bag control instruction of the vehicle based on the adjustment trigger signal; and controlling the vehicle to adjust the air bag by using the air bag control instruction until the air bag is in a preset wrinkle-free state, generating an adjustment termination signal, controlling the vehicle to stop adjusting the air bag by using the adjustment termination signal, acquiring the current height of the air suspension, and calibrating the suspension by using the current height. Therefore, the technical problems of high cost, high misjudgment probability and large potential safety hazards due to the fact that the wrinkle state of the air bag needs to be detected manually when the air suspension vehicle type is subjected to offline calibration in the related technology are solved.

Description

Technical Field

[0001] This application relates to the technical field of the configuration of vehicle suspension devices, and particularly relates to a vehicle suspension calibration method, device, vehicle, and storage medium. Background Art

[0002] Regarding air suspension vehicles, when loading on the production line, the airbag is in a deflated state, and there will be problems with the bellows of the airbag assembly during assembly on the flow line. Therefore, before the vehicle rolls off the production line, in addition to performing the suspension height calibration step, it is also necessary to perform an inspection step for airbag bellows.

[0003] In the related art, there is no step to automatically eliminate airbag bellows during the off-line calibration of air suspension vehicles. It is necessary to manually check whether there are bellows in the airbag. If there are bellows, the airbag is inflated to the highest state manually through a remote control to eliminate the airbag. Due to the need for manual participation, if the airbag bellows are not detected, it will flow into the market and cause early damage to the bellows of the airbag assembly, posing a relatively large safety hazard and urgently needing improvement. Summary of the Invention

[0004] This application provides a vehicle suspension calibration method, device, vehicle, and storage medium to solve the technical problems in the related art that during the off-line calibration of air suspension vehicles, it is necessary to manually detect the bellows state of the airbag, which has a high cost and a high misjudgment probability, and poses a relatively large safety hazard.

[0005] The first aspect of the embodiments of this application provides a vehicle suspension calibration method, including the following steps: receiving an adjustment trigger signal of the air suspension of the vehicle; generating an airbag control instruction for the vehicle based on the adjustment trigger signal; using the airbag control instruction to control the vehicle to perform airbag adjustment until the airbag is in a preset non-bellows state, generating an adjustment termination signal, and using the adjustment termination signal to control the vehicle to stop adjusting the airbag, and obtaining the current height of the air suspension to perform suspension calibration using the current height.

[0006] Optionally, in an embodiment of this application, before receiving the adjustment trigger signal of the air suspension of the vehicle, it further includes: obtaining the current relative height between the axle and the frame of the vehicle; calculating the height difference between the current relative height and the relative height at the previous moment; and generating the adjustment trigger signal when the height difference is not zero.

[0007] Optionally, in an embodiment of this application, the step of using the airbag control instruction to control the vehicle to perform airbag adjustment until the airbag is in a preset non-bellows state and generating an adjustment termination signal includes: detecting the change of the height difference within a preset time period until the height difference is zero, determining that the airbag is in the preset non-bellows state, and generating the adjustment termination signal.

[0008] Optionally, in an embodiment of the present application, after using the airbag control instruction to control the vehicle to perform airbag adjustment, it further includes: within the preset duration, if the height difference is not zero, generate a signal fault signal, and generate a corresponding fault message based on the signal fault signal.

[0009] Optionally, in an embodiment of the present application, after obtaining the current height of the air suspension, it further includes: determining whether the current height meets a preset height condition; if the current height does not meet the preset height condition, obtaining the airbag pressure signal of the vehicle; generating a corresponding suspension fault signal based on the airbag pressure signal, so as to generate a corresponding fault message by using the suspension fault signal.

[0010] Optionally, in an embodiment of the present application, it further includes: obtaining a suspension height adjustment signal of the vehicle; controlling the vehicle to perform airbag adjustment based on the suspension height adjustment signal to obtain the adjusted height of the air suspension; and performing suspension calibration by using the adjusted height.

[0011] An embodiment of the second aspect of the present application provides a suspension calibration device for a vehicle, including: a receiving module, configured to receive an adjustment trigger signal of an air suspension of the vehicle; a first generating module, configured to generate an airbag control instruction of the vehicle based on the adjustment trigger signal; a first calibration module, configured to control the vehicle to perform airbag adjustment by using the airbag control instruction until the airbag is in a preset non-creased state, generate an adjustment termination signal, so as to control the vehicle to stop adjusting the airbag by using the adjustment termination signal, and obtain the current height of the air suspension, so as to perform suspension calibration by using the current height.

[0012] Optionally, in an embodiment of the present application, it further includes: a first obtaining module, configured to obtain the current relative height between the axle and the frame of the vehicle; a calculating module, configured to calculate the height difference between the current relative height and the relative height at the previous moment; a second generating module, configured to generate the adjustment trigger signal when the height difference is not zero.

[0013] Optionally, in an embodiment of the present application, the first calibration module includes: a generating unit, configured to detect the change of the height difference within a preset duration until the height difference is zero, determine that the airbag is in the preset non-creased state, and generate the adjustment termination signal.

[0014] Optionally, in an embodiment of the present application, it further includes: a third generating module, configured to generate a signal fault signal within the preset duration if the height difference is not zero, and generate a corresponding fault message based on the signal fault signal.

[0015] Optionally, in an embodiment of the present application, it further includes: a judgment module, configured to judge whether the current height meets a preset height condition; a second acquisition module, configured to acquire an airbag pressure signal of the vehicle when the current height does not meet the preset height condition; a fourth generation module, configured to generate a corresponding suspension fault signal based on the airbag pressure signal, so as to generate a corresponding fault message by using the suspension fault signal.

[0016] Optionally, in an embodiment of the present application, it further includes: a third acquisition module, configured to acquire a suspension height adjustment signal of the vehicle; a control module, configured to control the vehicle to perform airbag adjustment based on the suspension height adjustment signal to obtain an adjusted height of the air suspension; a second calibration module, configured to perform suspension calibration by using the adjusted height.

[0017] An embodiment of the third aspect of the present application provides a vehicle, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the suspension calibration method of the vehicle as described in the above embodiment.

[0018] An embodiment of the fourth aspect of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the suspension calibration method of the vehicle as described in the above embodiment.

[0019] An embodiment of the fifth aspect of the present application provides a computer program product, including a computer program, where when the computer program is executed, it is used to implement the suspension calibration method of the vehicle as described above.

[0020] In the embodiment of the present application, when performing height calibration of the air suspension, the airbag of the vehicle can be controlled to realize suspension height adjustment, and during calibration, the suspension is adjusted to a certain height to ensure that the airbag is in a non-creased state, so as to combine suspension height calibration with automatic elimination of airbag wrinkles, without manual detection, which speeds up the overall calibration efficiency, reduces the probability of defective vehicles being taken off the production line, and further guarantees user satisfaction. Thus, the technical problem in the related art that when calibrating the air suspension model at the time of taking off the production line, it is necessary to manually detect the wrinkled state of the airbag, the cost is relatively high and the misjudgment probability is relatively high, and there are relatively large potential safety hazards is solved.

[0021] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0023] Figure 1 is a flowchart of a suspension calibration method for a vehicle provided according to an embodiment of the present application;

[0024] Figure 2 is a schematic diagram of an airbag inflation control logic in the related art;

[0025] Figure 3 is a schematic diagram of the principle of an ECAS (Electronically Controlled Air Suspension) system according to an embodiment of the present application;

[0026] Figure 4 is a flowchart of a suspension calibration method for a vehicle according to an embodiment of the present application;

[0027] Figure 5 is a schematic structural diagram of a suspension calibration device for a vehicle provided according to an embodiment of the present application;

[0028] Figure 6 is a schematic structural diagram of a vehicle provided according to an embodiment of the present application. Detailed Description of the Embodiment

[0029] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

[0030] The suspension calibration method, device, vehicle, and storage medium of the vehicle according to the embodiments of the present application will be described below with reference to the accompanying drawings. In view of the technical problem in the related art mentioned in the above background art that when calibrating the air suspension model at the time of offline production, it is necessary to manually detect the wrinkling state of the airbag, which has a high cost and a high probability of misjudgment, and there are relatively large potential safety hazards. The present application provides a suspension calibration method for a vehicle. In this method, when calibrating the height of the air suspension, the airbag of the vehicle can be controlled to adjust the suspension height, and during calibration, the suspension is adjusted to a certain height to ensure that the airbag is in a non-wrinkled state, so as to combine the suspension height calibration with the automatic elimination of airbag wrinkles, without manual detection, which speeds up the overall calibration efficiency, reduces the probability of defective vehicles going offline, and thus guarantees the satisfaction of users. Thereby, the technical problem in the related art that when calibrating the air suspension model at the time of offline production, it is necessary to manually detect the wrinkling state of the airbag, which has a high cost and a high probability of misjudgment, and there are relatively large potential safety hazards is solved.

[0031] Specifically, Figure 1 FIG. is a schematic flowchart of a suspension calibration method for a vehicle provided by an embodiment of the present application.

[0032] As Figure 1 shown, the suspension calibration method for the vehicle includes the following steps:

[0033] In step S101, an adjustment trigger signal of the air suspension of the vehicle is received.

[0034] It can be understood that the air suspension calibration process of the vehicle aims to ensure that the suspension system provides optimal performance and comfort under different loads and road conditions.

[0035] Before calibrating the air suspension of the vehicle, the embodiment of the present application can first perform preparatory work, such as vehicle inspection, to confirm that the suspension system is not damaged and components such as air springs, shock absorbers, and sensors are working properly; equipment preparation to prepare diagnostic tools, calibration software, measuring equipment (such as height sensor calibration tools), etc.; ensuring the calibration environment, that is, performing calibration on a flat and level ground to ensure that the environmental temperature and humidity meet the requirements.

[0036] Furthermore, the embodiment of the present application can perform system initialization. For example, the embodiment of the present application can connect a diagnostic device through the OBD (On Board Diagnostics) interface, read the current state and fault codes of the suspension system, clear the faults in the case of having fault codes, and restore the suspension system to the factory settings in the case of no fault codes to ensure that the calibration starts from the reference state.

[0037] After completing the above work, the embodiment of the present application can start to execute the calibration action.

[0038] The embodiment of the present application can receive an adjustment trigger signal of the air suspension of the vehicle to control the inflation or deflation of the airbag according to the adjustment trigger signal, thereby realizing the height adjustment of the air suspension.

[0039] Optionally, in an embodiment of the present application, before receiving the adjustment trigger signal of the air suspension of the vehicle, it further includes: obtaining the current relative height between the axle and the frame of the vehicle; calculating the height difference between the current relative height and the relative height at the previous moment; and generating an adjustment trigger signal when the height difference is not zero.

[0040] As a possible implementation, in the embodiments of the present application, a height sensor can be installed on the vehicle frame and on the axle through a swing rod assembly. When the height between the axle and the vehicle frame changes, the electrical signal of the height sensor will change. According to the changed electrical signal, that is, when the height difference between the current relative height and the relative height at the previous moment is not zero, the embodiments of the present application can generate an adjustment trigger command to indicate that the height of the current air suspension is not at the highest value, and the airbag is not in the highest state at this time. At this time, the airbag can be controlled according to the adjustment trigger signal to combine the calibration and wrinkle detection steps.

[0041] In step S102, a vehicle airbag control command is generated based on the adjustment trigger signal.

[0042] During the calibration of the air suspension, controlling the airbag (air spring) is a key step to ensure the performance of the suspension system. The airbag of the air suspension changes the height and stiffness of the suspension by adjusting the internal air pressure. The core of controlling the airbag is to precisely adjust the air pressure of the airbag through components such as solenoid valves and height sensors to optimize the vehicle height and comfort.

[0043] Furthermore, the embodiments of the present application can generate corresponding airbag control commands according to the adjustment trigger signal. For example, an inflation command for the airbag is generated according to the adjustment trigger signal to adjust the air pressure of the airbag, thereby realizing the adjustment of the height of the air suspension.

[0044] In step S103, the vehicle is controlled to adjust the airbag using the airbag control command until the airbag is in a preset non-wrinkled state, and an adjustment termination signal is generated. The adjustment termination signal is used to control the vehicle to stop adjusting the airbag, and the current height of the air suspension is obtained to perform suspension calibration using the current height.

[0045] The embodiments of the present application can adjust the airbag according to the airbag control command. During the adjustment, it is necessary to ensure that the air pressure of the airbag is within the range specified by the manufacturer to avoid damage to the airbag or a decline in suspension performance caused by too high or too low air pressure; ensure that the calibration process is carried out at a standard temperature; when adjusting the airbag, ensure that the vehicle load is evenly distributed to avoid inconsistent heights on one side.

[0046] When adjusting the airbag, the embodiments of the present application can constantly confirm the state of the airbag. When the airbag is in a non-wrinkled state, the adjustment of the airbag is stopped, and the current height of the air suspension is used as the height upper limit for suspension calibration.

[0047] Among them, there are various methods to confirm the state of the airbag. For example, a height sensor is separately set for the airbag to continuously monitor the height of the airbag. When the height of the airbag is at the maximum value (which can be provided by the manufacturer), it is determined that the airbag is in a non-creased state. Another example is to collect the image data of the airbag and use the image data for analysis to identify the wrinkles of the airbag. When no wrinkles can be identified, it is determined that the airbag is in a non-creased state. Another example is to detect the pressure value inside the airbag. When the pressure value rises rapidly within a short period of time, it is determined that the airbag is in a non-creased state, etc.

[0048] Optionally, in an embodiment of the present application, using an airbag control instruction to control the vehicle to adjust the airbag until the airbag is in a preset non-creased state and generating an adjustment termination signal includes: detecting the change in the height difference within a preset time period until the height difference is zero, determining that the airbag is in the preset non-creased state, and generating an adjustment termination signal.

[0049] In some embodiments, the state of the airbag can be identified by using the height difference between the relative heights of the axle and the vehicle frame at adjacent times.

[0050] When the height difference between the relative heights of the axle and the vehicle frame at adjacent times remains unchanged, it can be understood that the height of the air suspension cannot change any further at this time, that is, the airbag is already in the highest state. It can be determined that the airbag is in a non-creased state, and then an adjustment termination signal is generated to avoid continued inflation causing the airbag to exceed its upper limit.

[0051] Optionally, in an embodiment of the present application, after using an airbag control instruction to control the vehicle to adjust the airbag, it further includes: within a preset time period, if the height difference is not zero, generating a signal fault signal and generating a corresponding fault message based on the signal fault signal.

[0052] In the actual execution process, the embodiment of the present application can first determine the travel time of the air suspension between the lowest height and the highest height and use this travel time as the preset time period.

[0053] If the relative height between the axle and the vehicle frame always changes within the preset time period, it can indicate that there is a fault in the entire calibration process. For example, the airbag is damaged, etc.

[0054] At this time, the embodiment of the present application can generate a corresponding fault message and push it to the test terminal or the vehicle terminal, etc., so that the technical personnel can perform timely maintenance.

[0055] Optionally, in one embodiment of the present application, after obtaining the current height of the air suspension, it also includes: determining whether the current height meets a preset height condition; if the current height does not meet the preset height condition, obtaining an airbag pressure signal of the vehicle; generating a corresponding suspension fault signal based on the airbag pressure signal, and generating a corresponding fault message using the suspension fault signal.

[0056] As a possible implementation method, the embodiment of the present application can also reconfirm whether the current height of the air suspension is its designed maximum height, that is, whether the preset height condition is met, after the airbag is inflated to the highest state, that is, the wrinkle-free state.

[0057] If the current height is not the designed maximum height, it may indicate that there is a fault at this time, such as an installation error, a height sensor failure, etc. The embodiment of the present application can generate a corresponding fault message based on the suspension fault signal and push it to the test terminal or the vehicle terminal, etc., so that technicians can perform timely maintenance.

[0058] Optionally, in one embodiment of the present application, it also includes: obtaining a suspension height adjustment signal of the vehicle; controlling the vehicle to adjust the airbag based on the suspension height adjustment signal to obtain an adjustment height of the adjusted air suspension; and calibrating the suspension using the adjustment height.

[0059] After the airbag wrinkles are eliminated, that is, after the maximum height of the air suspension is calibrated, the embodiment of the present application can perform further suspension calibration.

[0060] The embodiment of the present application can receive a suspension height adjustment signal, wherein the suspension height adjustment signal can include a target adjustment height of the air suspension, and then perform airbag adjustment according to the suspension height adjustment signal to adjust the air suspension to obtain an adjustment height, thereby calibrating the suspension using the adjustment height.

[0061] Combination Figures 2 to 4 As shown, the working principle of the suspension calibration method of the vehicle of the embodiment of the present application is described in detail with an embodiment.

[0062] In the related art, the inspection of airbag wrinkles is not automated, and it is necessary to manually check whether there are wrinkles on the vehicle and inflate the airbag to the highest state through the remote control of the suspension control system. The control logic of the air suspension can be as follows: Figure 2 shown.

[0063] Step S201: Acquire the acquisition height of the air suspension and monitor the height difference between two acquisition heights.

[0064] The embodiment of the present application can first obtain the current suspension height data, which is usually achieved by a height sensor installed on the vehicle, and compare the currently acquired height with the last acquired height to calculate the height difference between the two.

[0065] Step S202: Generate a corresponding elevation instruction according to the height difference between the collected height and the last collected height.

[0066] The embodiment of the present application can generate a corresponding raising instruction based on the calculated height difference, wherein the height difference indicates that the vehicle needs to be raised (for example, the current height is lower than the target height), and a raising instruction can be generated to instruct the solenoid valve to inflate the airbag.

[0067] Step S203: Control the vehicle to be inflated to the highest state according to the raising instruction.

[0068] The embodiment of the present application can control the inflation of the vehicle suspension according to the generated lifting instruction until it reaches the highest state. At this time, the solenoid valve inflates the airbag according to the instruction, the airbag expands to raise the suspension, and the height is continuously monitored until the preset maximum height is reached.

[0069] In the actual implementation process, the embodiment of the present application can determine whether the airbag has reached the highest state through the change of the electrical signal of the height sensor provided in the vehicle's suspension control system. If it reaches the highest state, inflation is stopped. At this time, the problem of airbag wrinkles has been eliminated. Among them, the structure involved in the embodiment of the present application may include: a diagnostic instrument and an ECAS control system.

[0070] Among them, the embodiment of the present application can inflate the airbag assembly through the diagnostic instrument. After the diagnostic instrument is connected to the ECAS controller, the diagnostic instrument sends an inflation command to the ECAS controller to inflate the airbag.

[0071] The working principle of the ECAS system can be described as follows Figure 3 As shown, its working principle is: the height sensor is installed on the frame and on the axle through the rocker assembly. When the height between the axle and the frame changes, the electrical signal of the height sensor will change. This electrical signal is sent to the ECAS controller (ECU). The ECU (Electronic Control Unit) controls the solenoid valve to inflate and deflate the airbag according to the height signal.

[0072] Based on the above structure, when the air suspension vehicle model rolls off the production line, before the normal height of the suspension is calibrated, the embodiment of the present application can inflate the airbag assembly through the diagnostic instrument to make the sample vehicle reach the highest state. At this time, the airbag is inflated to the highest state to eliminate wrinkles.

[0073] Since the air suspension system is limited by the shock absorber assembly, when the vehicle is inflated to its maximum state, the vehicle cannot be raised any further. At this time, the electrical signal of the height sensor no longer changes. According to this logic, after the vehicle rolls off the production line, when the diagnostic instrument is connected to the ECAS controller, an inflation command is sent to the ECAS controller through the diagnostic instrument to inflate the airbag, and at the same time, the electrical signal of the height sensor is monitored. When the electrical signal value of the height sensor no longer changes (the mechanical structure of the suspension shock absorber assembly is limited), it is determined whether the prototype vehicle has reached the maximum state, and then the inflation is stopped. Through the automatic inflation step, the airbag is inflated to the maximum state to eliminate the airbag wrinkles, as Figure 4 shown, the embodiments of the present application may include the following steps:

[0074] Step S401: Connect the diagnostic instrument to the ECAS controller. In the embodiments of the present application, an inflation command can be sent to the ECAS controller through the diagnostic instrument to inflate the airbag.

[0075] Step S402: Read and clear the fault code.

[0076] In the embodiments of the present application, the diagnostic device can be connected through the OBD (On Board Diagnostics) interface to read the current state and fault code of the suspension system. In the case of a fault code, the fault is cleared. In the case of no fault code, the suspension system is restored to the factory settings to ensure that the calibration starts from the reference state

[0077] Step S403: Start height calibration.

[0078] Step S404: The diagnostic instrument sends a signal to the ECAS controller through the inflation command to inflate the airbag, and at the same time monitors the electrical signal value of the height sensor.

[0079] Among them, in the embodiments of the present application, when the height between the axle and the frame changes, that is, when the electrical signal of the height sensor changes, a corresponding adjustment trigger signal can be generated to control the solenoid valve to inflate and deflate the airbag.

[0080] Step S405: Determine whether the electrical signal value of the height sensor changes, that is, determine whether an adjustment termination signal is generated.

[0081] If it changes, go to step S404 to continue inflating the airbag. Otherwise, go to step S406.

[0082] Step S406: At this time, the height is the maximum height (limited by the suspension mechanical structure), then the diagnostic instrument stops inflating and automatically saves the electrical signal value of the height sensor at this time as the maximum height.

[0083] Step S407: Perform the next height calibration step.

[0084] In summary, the embodiment of the present application can add a calibration step of automatically inflating the airbag to the highest state when calibrating the suspension height of each prototype vehicle, and inflate the airbag of each prototype vehicle to the highest state to eliminate the hidden danger of airbag wrinkles, and avoid the problem of early damage to the airbag skin on the market. At the same time, the embodiment of the present application can also determine whether the airbag has reached the highest state by using the change in the electrical signal of the height sensor that comes with the suspension control system, that is, the change in height between the axle and the frame, without increasing the time for height calibration, and quickly solving the problem.

[0085] According to the suspension calibration method of the vehicle proposed in the embodiment of the present application, when calibrating the height of the air suspension, the airbag of the vehicle can be controlled to achieve suspension height adjustment, and during calibration, the suspension is adjusted to a certain height to ensure that the airbag is in a wrinkle-free state, so as to combine the suspension height calibration with the automatic elimination of airbag wrinkles, without the need for manual inspection, speeding up the overall calibration efficiency, reducing the probability of defective vehicles going offline, and thus ensuring user satisfaction. This solves the technical problem in the related art that when air suspension models are calibrated offline, it is necessary to manually inspect the wrinkle state of the airbag, which is costly and has a high probability of misjudgment, and there are major safety hazards.

[0086] Next, a suspension calibration device for a vehicle proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0087] Figure 5 It is a block diagram of a suspension calibration device for a vehicle according to an embodiment of the present application.

[0088] like Figure 5 As shown, the suspension calibration device 10 of the vehicle includes: a receiving module 100 , a first generating module 200 and a first calibration module 300 .

[0089] Specifically, the receiving module 100 is used to receive an adjustment trigger signal of the air suspension of the vehicle.

[0090] The first generating module 200 is used to generate an airbag control instruction of the vehicle based on the adjustment trigger signal.

[0091] The first calibration module 300 is used to control the vehicle to adjust the airbag using the airbag control instruction until the airbag is in a preset wrinkle-free state, generate an adjustment termination signal to control the vehicle to stop adjusting the airbag using the adjustment termination signal, and obtain the current height of the air suspension to calibrate the suspension using the current height.

[0092] Optionally, in one embodiment of the present application, the vehicle suspension calibration device 10 further includes: a first acquisition module, a calculation module and a second generation module.

[0093] The first acquisition module is used to acquire the current relative height between the axle and the frame of the vehicle.

[0094] A calculation module, configured to calculate the height difference between the current relative height and the relative height at the previous moment.

[0095] A second generation module, configured to generate an adjustment trigger signal when the height difference is not zero.

[0096] Optionally, in an embodiment of the present application, the first calibration module 300 includes: a generation unit.

[0097] Wherein, the generation unit is configured to detect the change of the height difference within a preset time period until the height difference is zero, determine that the airbag is in a preset non-wrinkled state, and generate an adjustment termination signal.

[0098] Optionally, in an embodiment of the present application, the vehicle suspension calibration device 10 further includes: a third generation module.

[0099] Wherein, the third generation module is configured to generate a signal fault signal within a preset time period if the height difference is not zero, and generate a corresponding fault message based on the signal fault signal.

[0100] Optionally, in an embodiment of the present application, the vehicle suspension calibration device 10 further includes: a judgment module, a second acquisition module, and a fourth generation module.

[0101] Wherein, the judgment module is configured to judge whether the current height meets a preset height condition.

[0102] The second acquisition module is configured to acquire the airbag pressure signal of the vehicle when the current height does not meet the preset height condition.

[0103] The fourth generation module is configured to generate a corresponding suspension fault signal based on the airbag pressure signal, so as to generate a corresponding fault message by using the suspension fault signal.

[0104] Optionally, in an embodiment of the present application, the vehicle suspension calibration device 10 further includes: a third acquisition module, a control module, and a second calibration module.

[0105] Wherein, the third acquisition module is configured to acquire the suspension height adjustment signal of the vehicle.

[0106] The control module is configured to control the vehicle to perform airbag adjustment based on the suspension height adjustment signal, and obtain the adjusted height of the air suspension after adjustment.

[0107] The second calibration module is configured to perform suspension calibration by using the adjusted height. It should be noted that the foregoing explanations of the embodiments of the vehicle suspension calibration method also apply to the vehicle suspension calibration device of this embodiment, and will not be repeated here.

[0108] The suspension calibration device of a vehicle according to an embodiment of the present application can control the airbag of the vehicle to adjust the suspension height when calibrating the height of the air suspension. During calibration, the suspension is adjusted to a certain height to ensure that the airbag is in a non-creased state, combining suspension height calibration with automatic elimination of airbag wrinkles, without manual detection, accelerating the overall calibration efficiency, reducing the probability of defective vehicles being taken off the production line, and thus ensuring user satisfaction. Thereby, it solves the technical problem in the related art that when calibrating the air suspension model at the end of the production line, it is necessary to manually detect the wrinkled state of the airbag, which has a high cost and a high misjudgment probability, and there are significant potential safety hazards.

[0109] Figure 6 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application. The vehicle may include:

[0110] A memory 601, a processor 602, and a computer program stored on the memory 601 and executable on the processor 602.

[0111] When the processor 602 executes the program, it implements the suspension calibration method of the vehicle provided in the above embodiment.

[0112] Further, the vehicle further includes:

[0113] A communication interface 603 for communication between the memory 601 and the processor 602.

[0114] The memory 601 is used to store a computer program executable on the processor 602.

[0115] The memory 601 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0116] If the memory 601, the processor 602, and the communication interface 603 are implemented independently, the communication interface 603, the memory 601, and the processor 602 can be interconnected through a bus and complete communication with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 6 only a thick line is shown in the figure, but it does not mean that there is only one bus or one type of bus.

[0117] Optionally, in a specific implementation, if the memory 601, the processor 602, and the communication interface 603 are integrated on a single chip, the memory 601, the processor 602, and the communication interface 603 can communicate with each other through an internal interface.

[0118] The processor 602 may be a central processing unit (CPU for short), or an application specific integrated circuit (ASIC for short), or one or more integrated circuits configured to implement the embodiments of the present application.

[0119] This embodiment also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the suspension calibration method of the vehicle as described above is implemented.

[0120] The embodiments of the present application also provide a computer program product, including a computer program. When the computer program is executed by a processor, the suspension calibration method of the vehicle provided by the embodiments of the present invention is implemented.

[0121] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0122] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0123] Any process or method description represented in a flowchart or otherwise described herein can be understood to represent a module, segment, or portion of code including one or N executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of the present application includes additional implementations, where functions can be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed. This should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0124] The logic and / or steps represented in a flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing a logical function, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or N wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, a computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0125] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits with suitable combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0126] Those of ordinary skill in the art can understand that all or part of the steps carried out in implementing the above-described embodiment methods can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiment.

[0127] In addition, in each of the various embodiments of the present application, the functional units can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0128] The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A suspension calibration method for a vehicle, characterized in that: The following steps are involved: Receiving an adjustment trigger signal of an air suspension of the vehicle; generating an airbag control instruction for the vehicle based on the adjustment trigger signal; The airbag control instruction is used to control the vehicle to adjust the airbag until the airbag is in a preset wrinkle-free state, and an adjustment termination signal is generated, so as to use the adjustment termination signal to control the vehicle to stop adjusting the airbag, and obtain the current height of the air suspension, so as to use the current height to calibrate the suspension.

2. The method according to claim 1, characterized in that Before receiving the adjustment trigger signal of the air suspension of the vehicle, the method further includes: Obtaining a current relative height between an axle and a frame of the vehicle; Calculate the height difference between the current relative height and the relative height at the previous moment; When the height difference value is not zero, the adjustment trigger signal is generated.

3. The method according to claim 2, characterized in that The method of controlling the vehicle to adjust the airbag by using the airbag control instruction until the airbag is in a preset wrinkle-free state and generating an adjustment termination signal includes: The change of the height difference is detected within a preset time period until the height difference is zero, determining that the airbag is in the preset wrinkle-free state, and generating the adjustment termination signal.

4. The method according to claim 3, characterized in that After using the airbag control instruction to control the vehicle to adjust the airbag, the method further includes: Within the preset time period, if the height difference value is not zero, a signal fault signal is generated, and a corresponding fault message is generated based on the signal fault signal.

5. The method according to claim 2, characterized in that: After obtaining the current height of the air suspension, the method further includes: Determine whether the current altitude satisfies a preset altitude condition; If the current height does not meet the preset height condition, obtaining an airbag pressure signal of the vehicle; A corresponding suspension fault signal is generated based on the airbag pressure signal, so as to generate a corresponding fault message using the suspension fault signal.

6. The method according to claim 1, characterized in that Also includes: Acquiring a suspension height adjustment signal of the vehicle; Controlling the vehicle to perform airbag adjustment based on the suspension height adjustment signal to obtain an adjusted height of the air suspension; The adjustment height is used to perform suspension calibration.

7. A suspension calibration device for a vehicle, characterized in that: include: A receiving module, used for receiving an adjustment trigger signal of an air suspension of a vehicle; A generating module, configured to generate an airbag control instruction for the vehicle based on the adjustment trigger signal; A calibration module is used to control the vehicle to adjust the airbag using the airbag control instruction until the airbag is in a preset wrinkle-free state, generate an adjustment termination signal, use the adjustment termination signal to control the vehicle to stop adjusting the airbag, and obtain the current height of the air suspension to calibrate the suspension using the current height.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the suspension calibration method for a vehicle as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the suspension calibration method for a vehicle as described in any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed, it is used to implement the suspension calibration method for a vehicle as described in any one of claims 1-6.

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