Method, device, electronic device, vehicle and storage medium for controlling air pump

Abstract

The present application provides a method, device, electronic device, vehicle, and storage medium for controlling an air pump. The method comprises: obtaining air pressure characteristic data of a braking system within a preset time, wherein the braking system includes at least an air pump and an air reservoir; when the air pressure characteristic data satisfies a leakage determination condition, adjusting an operating parameter value of the air pump to maintain the pressure value of the air reservoir within a set range or to reduce the rate of decrease of the pressure value in the air reservoir; wherein the braking system does not receive a braking signal within the preset time, and the air pump is in an on state within the preset time. The method provided by the present application can improve the vehicle's endurance while ensuring vehicle safety.

Description

Technical Field

[0001] The present application relates to the field of vehicle brake air pressure control, and in particular to a method, device, electronic equipment, vehicle, and storage medium for controlling an air pump. Background Art

[0002] The air circuit of the vehicle's braking system includes an air pump and an air reservoir. When the air pressure in the air reservoir is low, the air pump is turned on to inflate the air reservoir. When the air pressure in the air reservoir rises to the set pressure, the air pump is turned off to stop inflating.

[0003] In the existing method, when a gas leak occurs in the gas cylinder and the gas pressure drops, the vehicle controller will control the vehicle to slow down or stop for safety reasons.

[0004] In existing methods, when a leak occurs in the air reservoir causing a drop in air pressure, even if the leak is minor, the vehicle controller will control the vehicle to slow down or stop, which will have a negative impact on the vehicle's endurance. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, electronic device, vehicle, and storage medium for controlling an air pump, which can improve the vehicle's endurance while ensuring vehicle safety.

[0006] According to a first aspect of an embodiment of the present application, a method for controlling an air pump is provided, the method comprising:

[0007] Acquiring air pressure characteristic data of a braking system within a preset time, wherein the braking system includes at least an air pump and an air reservoir;

[0008] When the air pressure characteristic data meets the air leakage judgment conditions, the operating parameter value of the air pump is adjusted to keep the pressure value of the air reservoir within the set range, or to reduce the decreasing rate of the pressure value in the air reservoir;

[0009] The braking system does not receive a braking signal within a preset time, and the air pump is in an open state within a preset time.

[0010] In one embodiment, the air pressure characteristic data includes the air pressure increase rate or air pressure change trend of the air reservoir. Acquiring the air pressure characteristic data of the braking system within a preset time includes:

[0011] Get the pressure value of the gas tank within the preset time;

[0012] Determine the rate of increase of the gas pressure in the gas reservoir according to the pressure value of the gas reservoir within a preset time;

[0013] Alternatively, the pressure change trend of the air reservoir is determined based on the pressure value of the air reservoir within a preset time.

[0014] In one embodiment, when the air pressure characteristic data includes the air pressure increase rate or the air pressure change trend of the air reservoir, and when the air pressure characteristic data meets the air leakage determination condition, adjusting the operating parameter value of the air pump includes:

[0015] When the air pressure increasing rate of the air cylinder is less than the preset air pressure increasing rate, or the air pressure changing trend is a downward trend, the operating power of the air pump is increased.

[0016] In one embodiment, the method further comprises:

[0017] When the operating power of the air pump increases to the peak power, and the air pressure increase rate of the air cylinder is still lower than the preset air pressure increase rate, or the air pressure change trend of the air cylinder is still a downward trend, the air pressure opening threshold of the air pump is increased and / or the air pump is controlled to continue running.

[0018] In one embodiment, the air pressure characteristic data includes an air leakage level, which is a level indicating no air leakage or a level indicating the presence of air leakage. When the air pressure characteristic data meets the air leakage determination condition, the operating parameter value of the air pump is adjusted, including:

[0019] When the air leakage level is a level indicating that air leakage exists, adjust the operating parameter value of the air pump.

[0020] In one embodiment, the level indicating the presence of an air leak is air leak level 1, air leak level 2, or air leak level 3. When the air leak level is the level indicating the presence of an air leak, adjusting the operating parameter value of the air pump includes:

[0021] When the air leakage level is level 1, the air pressure opening threshold of the air pump is increased;

[0022] When the air leakage level is level 2, the air pump is controlled to run continuously;

[0023] When the air leakage level is air leakage level three, the operating power of the air pump is increased to the preset power.

[0024] In one embodiment, the air pressure characteristic data includes a torque increase rate or a torque change trend of the air pump; obtaining the air pressure characteristic data of the braking system within a preset time includes:

[0025] Turn on the air pump according to the preset interval time;

[0026] Get the torque value of the air pump within the preset time;

[0027] According to the torque value, determine the torque increase rate of the air pump;

[0028] Alternatively, the torque variation trend of the air pump is determined based on the torque value.

[0029] In one embodiment, the air pressure characteristic data includes a torque increase rate or a torque change trend of the air pump. When the air pressure characteristic data meets the air leakage determination condition, the operating parameter value of the air pump is adjusted, including:

[0030] When the torque increase rate of the air pump is less than the preset torque increase rate, or the torque change trend of the air pump is a downward trend, the torque shutdown threshold of the air pump is increased, and / or the preset pause time is shortened;

[0031] When the torque shutdown threshold increases to a peak value and the torque increase rate of the air pump is still less than the preset torque increase rate, or the torque change trend of the air pump is still a downward trend, the air pump is controlled to continue running.

[0032] According to a second aspect of an embodiment of the present application, a device for controlling an air pump is provided, the device comprising:

[0033] An acquisition module, configured to acquire air pressure characteristic data of a braking system within a preset time, wherein the braking system includes at least an air pump and an air reservoir;

[0034] An adjustment module is used to adjust the operating parameter value of the air pump when the air pressure characteristic data meets the air leakage judgment condition, so as to keep the pressure value of the air reservoir within the set range or reduce the decreasing rate of the pressure value in the air reservoir;

[0035] The braking system does not receive a braking signal within a preset time, and the air pump is in an open state within a preset time.

[0036] According to a third aspect of an embodiment of the present application, there is provided an electronic device, the device comprising: a processor and a memory storing computer program instructions;

[0037] When the processor executes the computer program instructions, it implements the method for controlling the air pump as described in the first aspect or any embodiment of the first aspect.

[0038] According to a fourth aspect of an embodiment of the present application, a vehicle is provided, comprising the electronic device of the third aspect.

[0039] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a processor, a method for controlling an air pump as described in the first aspect or any embodiment of the first aspect is implemented.

[0040] The embodiments of the present application provide a method, device, electronic device, vehicle and storage medium for controlling an air pump. When the air pump in the braking system is in an on state, the air pressure characteristic data of the braking system within a preset time is obtained. The braking system does not receive a braking signal within the preset time, and the air pressure in the air cylinder is not used for braking. Therefore, when the air pressure characteristic data meets the leakage judgment condition, it indicates that there is an air leakage in the air cylinder. By adjusting the operating parameter value of the air pump to keep the pressure value of the air cylinder within the set range, or reducing the decreasing rate of the pressure value in the air cylinder, the braking demand of the vehicle is met, the vehicle can maintain normal driving, and the vehicle's endurance can be improved under the premise of ensuring vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0042] Figure 1 A flow chart of a method for controlling an air pump provided in an embodiment of the present application.

[0043] Figure 2 A flow chart of another method for controlling an air pump provided in an embodiment of the present application.

[0044] Figure 3 A flow chart of another method for controlling an air pump provided in an embodiment of the present application.

[0045] Figure 4 A schematic diagram of a device for controlling an air pump provided in an embodiment of the present application.

[0046] Figure 5 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] The air circuit of a vehicle's braking system includes an air pump and an air reservoir. When the air pressure in the reservoir is low, the air pump is turned on to fill the reservoir. When the air pressure in the reservoir reaches the set pressure, the air pump is turned off, stopping the filling process. In existing methods, if an air reservoir leaks, causing a drop in air pressure, the vehicle's controller will decelerate or stop the vehicle for safety reasons. Even if the leak is minor, the vehicle's controller will decelerate or stop the vehicle, negatively impacting its range.

[0049] The embodiments of the present application provide a method, device, electronic device, vehicle and storage medium for controlling an air pump. When the air pump in the braking system is in an on state, the air pressure characteristic data of the braking system within a preset time is obtained. The braking system does not receive a braking signal within the preset time, and the air pressure in the air cylinder is not used for braking. Therefore, when the air pressure characteristic data meets the leakage judgment condition, it indicates that there is an air leakage in the air cylinder. By adjusting the operating parameter value of the air pump to keep the pressure value of the air cylinder within the set range, or reducing the decreasing rate of the pressure value in the air cylinder, the braking demand of the vehicle is met, the vehicle can maintain normal driving, and the vehicle's endurance can be improved under the premise of ensuring vehicle safety.

[0050] Exemplary Implementation Environment

[0051] The method for controlling an air pump provided in an embodiment of the present application is applied to a vehicle having a braking system including an air pump. The vehicle may be a vehicle that uses a single air circuit brake or a vehicle that uses both air circuit brake and motor brake.

[0052] Exemplary Methods

[0053] The execution subject of the method provided in the embodiment of the present application is a controller, server or other device with data transmission and data processing functions. When applied to a vehicle, the execution subject may be the controller of the braking system on the vehicle.

[0054] In some embodiments, a method for controlling an air pump provided by an embodiment of the present application is as follows: Figure 1 As shown, the following steps may be included:

[0055] S110, obtaining air pressure characteristic data of the braking system within a preset time.

[0056] A vehicle's braking system may include an air pump, an air reservoir, a connecting pipe, and an air pressure sensor. The air pump and air reservoir are connected via the connecting pipe to form the braking system's air circuit. The air pressure sensor monitors the pressure in the air reservoir in real time and transmits this pressure value to the braking system's controller. The air pump can also transmit torque values to the controller during operation. When the driver performs braking operations, such as deceleration or parking, the braking system receives a braking signal from the vehicle's controller, causing the air reservoir to release air, thereby decelerating or stopping the vehicle. After the air reservoir releases air, the air pressure decreases. If the pressure drops to a preset pressure to activate the air pump, the controller activates the air pump to inflate the air reservoir. When the pressure rises to a preset pressure to deactivate the air pump, the controller deactivates the air pump. If the air pump inflates the air reservoir, the rate at which the air pressure increases will be lower than when the system is leak-free. In severe cases, the air pressure may continue to decrease even as the pump inflates the air reservoir. Moreover, the torque required for the air pump to run at the same speed at different air pressure values is different. The higher the air pressure value, the greater the torque. Therefore, the air pressure value can be estimated based on the torque of the air pump running at the same speed. The air pressure increase rate in the air cylinder can also be estimated based on the torque increase rate of the air pump running at the same speed, or the air pressure change trend in the air cylinder can be estimated based on the torque change trend of the air pump running at the same speed.

[0057] The air pressure characteristic data may be data representing the air pressure changes in the brake system, such as the air pressure increase rate or pressure change trend of the air reservoir, a leakage level indicating whether there is leakage in the brake system, and / or the leakage rate when leakage occurs, or an air pump torque increase rate or torque change trend. The air pressure change trend may be an upward trend, a stable trend, or a downward trend, and the torque change trend may be an upward trend, a stable trend, or a downward trend.

[0058] Among them, the air pressure change trend is an upward trend, a stable trend, and a downward trend, which respectively indicate that the air pressure value of the air cylinder increases, stabilizes, and decreases within the preset time; the torque change trend is an upward trend, a stable trend, and a downward trend, which respectively indicate that the torque of the air pump increases, stabilizes, and decreases within the preset time.

[0059] The preset time is a preset sampling time. The braking system does not receive a braking signal within the preset time, and the air pump is in an open state within the preset time.

[0060] Based on the air pressure value within the preset time when the air pump is on and the braking system does not receive a braking signal, the air pressure increase rate or air pressure change trend of the air reservoir is calculated; or based on the torque value within the preset time when the air pump is on and the braking system does not receive a braking signal, the torque increase rate or torque change trend of the air pump is calculated to determine whether there is an air leakage fault in the braking system.

[0061] S120: When the air pressure characteristic data meets the air leakage determination condition, the operating parameter value of the air pump is adjusted.

[0062] When the characteristic air pressure data is the rate of increase of air pressure in the air reservoir, the air leakage determination condition may be that the rate of increase of air pressure is less than a preset rate of increase of air pressure. The preset rate of increase of air pressure is the rate of increase of air pressure in the air reservoir when the brake system is leaking and the air pump is inflating the air reservoir at a set operating power. If the rate of increase of air pressure in the air reservoir is less than the rate of increase of air pressure when there is no leakage, when the air pump is operating at the same power, then there is an air leakage fault in the brake system.

[0063] When the air pressure characteristic data is the air pressure variation trend of the air reservoir, the air leakage determination condition may be that the air pressure variation trend is a downward trend. If the air pressure variation trend of the air reservoir is a downward trend, then there is an air leakage fault in the brake system.

[0064] When the air pressure characteristic data is an air leakage level, the air leakage determination condition may be that if the air leakage level is a level indicating that an air leakage exists in the brake system, then an air leakage fault exists in the brake system.

[0065] When the pressure characteristic data is the torque increase rate of the air pump, the air leakage determination condition may be that the torque increase rate is less than a preset torque increase rate. The preset torque increase rate is the torque increase rate when the air pump is inflating the air reservoir at a set speed and there is no air leakage. If the torque increase rate of the air pump is less than the preset torque increase rate within a preset time period at the same air pump speed, then an air leakage fault exists in the brake system.

[0066] When the air pressure characteristic data is a torque variation trend of the air pump, the air leakage determination condition may be that the torque variation trend is a downward trend. If the torque variation trend of the air pump is a downward trend, then there is an air leakage fault in the brake system.

[0067] The operating parameter value of the air pump may include at least one of an air pressure opening threshold, an operating power, an operating mode, a torque closing threshold, and an intermittent time.

[0068] Among them, the air pressure start threshold indicates that the air pump starts running when the air pressure value of the air cylinder drops to this threshold; the air pump operation mode can be stop working, continuous operation or intermittent operation; the torque shutdown threshold indicates that when the torque of the air pump increases to this threshold during operation, the controller controls to shut down the air pump; the intermittent duration indicates the length of time between the air pump being shut down and the next start.

[0069] Compare the air pressure characteristic data with the leakage judgment conditions. When the air pressure characteristic data meets the leakage judgment conditions, it means that there is a leakage fault in the brake system. In this case, adjust the operating parameter value of the air pump and increase the inflation rate or inflation frequency of the air pump to increase or maintain the pressure value of the air tank.

[0070] Specifically, when the characteristic air pressure data is the rate of increase or change trend of air reservoir pressure, the air reservoir pressure can be increased or maintained by at least one of increasing the air pressure opening threshold, increasing operating power, or changing the operating mode. When the characteristic air pressure data is the rate of increase or change trend of air pump torque, the air reservoir pressure can be maintained within a set range or the rate of decrease of the air reservoir pressure can be reduced by at least one of increasing the torque closing threshold or reducing the intermittent period. When the air reservoir pressure is within the set range, the vehicle's braking requirements can be met.

[0071] Increasing the pressure threshold, continuous pump operation, torque cutoff threshold, or reducing intermittent intervals can all increase the pump's inflation frequency. Increasing operating power can increase the pump's speed, thereby increasing the pump's inflation rate.

[0072] The method provided in the embodiment of the present application obtains the air pressure characteristic data of the braking system within a preset time when the air pump in the braking system is in the turned-on state. The braking system does not receive a braking signal within the preset time, and the air pressure in the air reservoir is not used for braking. Therefore, when the air pressure characteristic data meets the leakage judgment condition, it indicates that there is an air leakage in the air reservoir. By adjusting the operating parameter value of the air pump, the pressure value of the air reservoir is kept within the set range, or the decreasing rate of the pressure value in the air reservoir is reduced, the braking demand of the vehicle is met, the vehicle can maintain normal driving, and the vehicle's endurance can be improved under the premise of ensuring vehicle safety.

[0073] In one embodiment, when the air pressure characteristic data meets the air leakage determination condition, a prompt message is also generated to prompt the driver to drive slowly and / or perform maintenance.

[0074] When the air pressure characteristic data meets the leakage judgment conditions, it indicates that there is an air leakage fault in the brake system. To ensure safety, a prompt message is generated to remind the driver. After receiving the prompt signal, the driver can avoid brake failure by driving slowly and / or perform maintenance to repair the air leakage fault to ensure safe driving.

[0075] For example, prompt information is displayed through a human interface such as an instrument or a display screen, or a prompt information is played through a speaker of the vehicle to remind the driver to drive slowly and repair the vehicle as soon as possible.

[0076] The method provided in the embodiment of the present application generates a prompt message to alert the driver when there is an air leakage fault in the brake system, thereby ensuring safe driving.

[0077] In some embodiments, when the air pressure sensor of the air reservoir normally collects and transmits air pressure values, and the transmission line between the air pressure sensor and the controller of the brake system normally transmits signals, the controller determines whether the air circuit of the brake system is leaking based on the air pressure value of the air reservoir. The air pressure characteristic data includes the air pressure increase rate or air pressure change trend of the air reservoir, such as Figure 2 As shown, S110: obtaining air pressure characteristic data of the braking system within a preset time may include the following steps:

[0078] S111, obtaining the pressure value of the gas cylinder within a preset time.

[0079] The preset time is a preset sampling duration that is before the current time and adjacent to the current time.

[0080] When the air pump inflates the air cylinder, the pressure sensor of the air cylinder collects the pressure value of the air cylinder and sends the pressure value to the controller. The controller extracts the pressure value within the pre-set sampling time during the time when the braking system does not receive the braking signal from the received pressure value.

[0081] S112, determining the rate of increase of the air pressure in the air reservoir according to the pressure value of the air reservoir within a preset time.

[0082] First, calculate the difference between the pressure value of the air reservoir at the last moment and the pressure value at the first moment within the preset sampling time to obtain the pressure increase value, then calculate the quotient of the increase value and the preset sampling time, and use the quotient as the pressure increase rate of the air reservoir within the preset time, that is, the average pressure increase rate of the air reservoir.

[0083] When the preset sampling time is the time between two adjacent sampling moments, the difference between the pressure value at the current sampling moment and the pressure value at the previous sampling moment is calculated, and the quotient of the difference and the time between the two adjacent sampling moments is calculated, and the quotient is used as the air pressure increase rate of the air cylinder at the current sampling moment, that is, the real-time air pressure increase rate of the air cylinder.

[0084] Alternatively, S113 , determining a pressure change trend of the air reservoir according to the pressure value of the air reservoir within a preset time.

[0085] The difference between the pressure value of the air reservoir at the last moment and the pressure value at the first moment within the preset sampling time is calculated, and the pressure change trend of the air reservoir within the preset time is determined based on the difference.

[0086] When the preset sampling time is the time between two adjacent sampling moments, the difference between the pressure value at the current sampling moment and the pressure value at the previous sampling moment is calculated, and the pressure change trend of the air cylinder at the current sampling moment is determined based on the difference, that is, the real-time pressure change trend of the air cylinder.

[0087] In one embodiment, when the difference is greater than 0, the pressure change trend of the air cylinder is an upward trend; when the difference is equal to 0, the pressure change trend of the air cylinder is a stable trend; when the difference is less than 0, the pressure change trend of the air cylinder is a downward trend.

[0088] The method provided in the embodiment of the present application calculates the air pressure increase rate or air pressure change trend of the air cylinder by collecting the air pressure value in the air cylinder when the air pressure sensor of the air cylinder normally collects and sends the air pressure value, and the transmission line between the air pressure sensor and the controller of the braking system normally transmits signals. The collected air pressure value is used as the air pressure characteristic data of the braking system, thereby providing a data basis for determining whether the air circuit of the braking system is leaking.

[0089] In one embodiment, when the air pressure characteristic data includes an air pressure increase rate or an air pressure change trend of the air reservoir, S120, when the air pressure characteristic data satisfies the air leakage determination condition, adjusting the operating parameter value of the air pump may include the following steps:

[0090] S121: When the air pressure increase rate of the air cylinder is less than the preset air pressure increase rate, or the air pressure change trend is a downward trend, increase the operating power of the air pump.

[0091] The air pressure increase rate is the average air pressure increase rate or the real-time air pressure increase rate, and the air pressure change trend is the air pressure change trend within a preset time or the real-time air pressure change trend.

[0092] When there is an air leakage fault in the brake system, the air pump is controlled to operate intermittently according to the set operating power, starting when the air pressure value is lower than the air pressure opening threshold and stopping when the air pressure value is higher than or equal to the air pressure closing threshold.

[0093] When the air pressure increase rate of the air cylinder is less than the preset air pressure increase rate, or the air pressure change trend is a downward trend, it indicates that there is an air leakage fault in the brake system. At this time, the control increases the operating power of the air pump, increases the speed of the air pump, and the inflation rate of the air pump increases accordingly. The air pressure value of the air cylinder accelerates to rise or changes from a downward trend to an upward trend, so that the air pressure value in the air cylinder meets the braking needs of the vehicle.

[0094] While increasing the operating power of the air pump, monitor the air pressure increase rate or pressure change trend of the air pump. After increasing the operating power of the air pump, if the air pressure increase rate of the air reservoir is less than the preset air pressure increase rate, or the air pressure change trend is a downward trend, then continue to control and increase the operating power of the air pump; if the air pressure increase rate of the air reservoir is greater than or equal to the preset air pressure increase rate, or the air pressure change trend is an upward trend, then control the air pump to maintain the current operating power until the air pressure value is higher than or equal to the air pressure closing threshold, and then control the air pump to stop running. And when the air pressure value falls below the air pressure opening threshold again, control the air pump to start running according to the operating power when the air pump was last shut down.

[0095] The method provided in the embodiment of the present application increases the operating power of the air pump and the inflation rate of the air pump based on the air pressure increase rate or air pressure change trend of the air cylinder when there is an air leakage fault in the braking system, so that the air pressure value in the air cylinder can quickly meet the braking requirements of the vehicle and ensure safe driving of the vehicle.

[0096] In one embodiment, the method may further include the following steps:

[0097] When the operating power of the air pump increases to the peak power, and the air pressure increase rate of the air cylinder is still lower than the preset air pressure increase rate, or the air pressure change trend of the air cylinder is still a downward trend, the air pressure opening threshold of the air pump is increased and / or the air pump is controlled to continue running.

[0098] When there is an air leakage fault in the braking system, the operating power of the air pump is gradually increased. When the operating power of the air pump is increased to the peak power, the air pressure increase rate of the air cylinder is still lower than the preset air pressure increase rate, or the air pressure change trend of the air cylinder is still a downward trend, it means that the air pressure value of the air cylinder cannot meet the braking requirements at the current inflation rate. Further measures are taken to increase the air pressure opening threshold of the air pump and / or control the continuous operation of the air pump to increase the rising rate of the air pressure value of the air cylinder.

[0099] The method provided in the embodiment of the present application further takes measures to increase the air pressure opening threshold of the air pump and / or control the continuous operation of the air pump when the operating power of the air pump increases to the peak power but the rising rate of the air pressure value of the air pump is still difficult to meet the braking demand, so as to increase the rising rate of the air pressure value of the air cylinder, so that the air pressure value in the air cylinder can quickly meet the braking demand of the vehicle and ensure safe driving of the vehicle.

[0100] In one embodiment, the air pressure characteristic data includes an air leakage level, where the air leakage level is a level indicating no air leakage or a level indicating the presence of air leakage.

[0101] In one embodiment, technicians pre-set the corresponding relationship between the air pressure value change and the leakage level of the braking system according to needs. The air pressure value change can be the air pressure increase rate of the air cylinder, and the air pressure increase rate can be the average air pressure increase rate within a preset time, or it can be the real-time air pressure increase rate. When the air pressure increase rate is consistent with the air pressure increase rate under normal circumstances, it means that there is no air leakage in the braking system, and the corresponding air leakage level is the level indicating no air leakage, for example, the level indicating no air leakage is level 0, and there is no need to adjust the operating parameters of the air pump. When the air pressure increase rate is less than the air pressure increase rate under normal circumstances, it means that there is air leakage in the braking system, and the corresponding air leakage level is the level indicating the presence of air leakage. At this time, it is necessary to adjust the operating parameters of the air pump to keep the pressure value of the air cylinder within the set range, or to reduce the rate of decrease of the pressure value in the air cylinder.

[0102] S120: When the air pressure characteristic data meets the air leakage determination condition, adjusting the operating parameter value of the air pump may include the following steps:

[0103] S122: When the air leakage level is a level indicating that air leakage exists, adjust the operating parameter value of the air pump.

[0104] When the air leakage level is a level indicating that air leakage exists, it indicates that there is air leakage in the brake system, and the operating parameter value of the air pump is adjusted.

[0105] One or more operating parameter values of the air pump can be adjusted, and the level of leakage indicating the presence of air leakage can be multiple leakage levels, and each leakage level indicates a different degree of leakage. When the leakage level indicates a lighter degree of leakage, one parameter value of the multiple operating parameters of the air pump can be adjusted to increase the air pressure value of the air cylinder to meet the braking requirements, for example, increase the air pressure opening threshold of the air pump to increase the inflation frequency; when the leakage level indicates a heavier degree of leakage, one or more parameter values of the air pump can be adjusted to maintain or increase the air pressure value of the air cylinder, for example, increase the air pressure opening threshold of the air pump and increase the operating power of the air pump. At this time, the inflation rate is higher than when the leakage level is lighter.

[0106] The method provided in the embodiment of the present application adjusts the operating parameter value of the air pump based on the leakage level, and more accurately controls the braking system to meet the air pressure value required for vehicle braking.

[0107] In one embodiment, the level indicating the presence of air leakage is air leakage level 1, air leakage level 2, or air leakage level 3. The degree of air leakage indicated by air leakage level 1, air leakage level 2, and air leakage level 3 increases in severity. An adjustment plan corresponding to each air leakage level is pre-set, and the adjustment plan includes the operating parameters that need to be adjusted and how to adjust the operating parameters. S122: When the air leakage level is a level indicating the presence of air leakage, adjusting the operating parameter value of the air pump may include the following steps:

[0108] S1221: When the air leakage level is level 1, increase the air pressure opening threshold of the air pump.

[0109] Leakage Level 1 corresponds to a leakage level where, when the brake system receives no braking signal within a preset time, the rate of increase in the air pressure in the air reservoir during inflation by the air pump is less than a preset rate, and the rate of increase is greater than zero, and the air pressure in the air reservoir continues to rise, indicating a mild leakage level. The preset rate of increase is the rate of increase when there is no leakage.

[0110] When the air leakage level is air leakage level 1, the air leakage degree is relatively light, and the air pressure opening threshold of the air pump is controlled to be increased.

[0111] When the brake system is leak-free, the air pump operates intermittently based on the air reservoir pressure. When the air reservoir pressure falls below the pressure-on threshold, the control turns on the air pump to begin inflating the reservoir. As the air reservoir pressure gradually increases, the control turns off the air pump when it exceeds the pressure-off threshold, halting operation. At leak level 1, even though the brake system is leaking, the air reservoir pressure can still rise as the pump inflates. By raising the pressure-on threshold, the pump's inflation frequency increases, maintaining the reservoir pressure within the set range.

[0112] For example, when there is no leakage, the air pump is controlled to start when the air pressure value of the air cylinder is lower than 0.7MPa. At this time, the air pump is controlled to start when the air pressure value of the air cylinder is lower than 0.8Mpa, thereby increasing the inflation frequency of the air pump.

[0113] S1222: When the air leakage level is level 2, the air pump is controlled to continue running.

[0114] The corresponding leakage degree of leakage level 2 can be: the braking system does not receive a braking signal within the preset time, and when the air pump inflates, the air pressure increase rate of the air cylinder is less than the preset air pressure increase rate, and the air pressure increase rate is equal to 0, and the air pressure value in the air cylinder can remain stable. At this time, the leakage degree is serious.

[0115] When the leakage level is leakage level 2, the leakage is serious, and the air pump is controlled to run continuously to keep the pressure value of the air reservoir from decreasing by continuous inflation.

[0116] S1223: When the air leakage level is level three, the operating power of the air pump is increased to a preset power.

[0117] The corresponding leakage degree of leakage level 2 can be: the braking system does not receive a braking signal within the preset time, and when the air pump inflates, the air pressure increase rate of the air cylinder is less than the preset air pressure increase rate, and the air pressure increase rate is less than 0, and the air pressure value in the air cylinder continues to decrease. At this time, the leakage degree is serious.

[0118] When the air leakage level is level 2, the air leakage is severe, and the operating power of the air pump is increased to the preset power. The preset power is the power value set by the technician in advance according to the requirements, which is greater than the current power and less than or equal to the peak power.

[0119] After increasing the operating power, the air pump speeds up the inflation speed, which can reduce the rate of pressure drop in the air tank.

[0120] When the air leakage level is air leakage level three, the air pump can also be controlled to continue running and the operating power of the air pump can be increased to a preset power at the same time.

[0121] The method provided in the embodiment of the present application adjusts the operating parameter value of the air pump based on the leakage level when there is leakage in the brake system, so as to more accurately control the brake system to meet the air pressure value required for vehicle braking.

[0122] In one embodiment, the vehicle utilizes both pneumatic braking and electric braking, and can switch between these two modes. Electric braking involves the controller of the brake motor receiving a brake signal and then cutting off the power supply to the brake motor, causing the brake motor to stop, thereby decelerating or stopping the vehicle.

[0123] When the level indicating the presence of air leakage is air leakage level 2 or air leakage level 3, the method may further include the following steps:

[0124] First, control the air pump to stop working.

[0125] When the leakage level is leakage level two or leakage level three, the air brake system has a serious leakage. If the air brake continues to be used, it may be difficult to meet the braking needs of the vehicle, posing a safety hazard. At this time, the air brake is switched to electric brake. The switching process includes controlling the air pump to stop working to turn off the air brake mode.

[0126] Then, the control turns on the motor braking mode.

[0127] The controller controls the brake motor to turn on and switch to the motor braking mode, and the vehicle can be braked by the brake motor.

[0128] The method provided in the embodiment of the present application switches to the motor braking mode when the braking system has a serious air leakage, thereby meeting the braking needs of the vehicle, ensuring the safe driving of the vehicle, and improving the vehicle's endurance.

[0129] In some embodiments, when the air pressure sensor of the air reservoir cannot normally collect air pressure values, or the transmission line between the air pressure sensor and the controller of the brake system cannot normally transmit signals, the controller cannot receive the air pressure value of the air reservoir and cannot determine whether the air circuit of the brake system is leaking based on the air pressure value of the air reservoir. In this case, the controller controls the air pump to operate at a preset speed. Since the torque of the air pump and the air pressure value of the air reservoir are in a corresponding relationship at the same speed, the air pressure value of the air reservoir can be estimated based on the torque of the air pump. Based on this, the air circuit of the brake system can be judged based on the torque value. The air pressure characteristic data includes the torque increase rate or torque change trend of the air pump, such as Figure 3 As shown, S110: obtaining air pressure characteristic data of the braking system within a preset time may include the following steps:

[0130] S114, turning on the air pump according to the preset interval time.

[0131] The preset interval is the preset duration for shutting down the air pump. During the preset interval, the air pump is in the off state. After the air pump is shut down, it will be turned on again after a preset interval.

[0132] S115, obtaining the torque value of the air pump within a preset time.

[0133] The preset time is the pre-set sampling time.

[0134] The air pump sends the torque value during the time of filling the air cylinder to the controller, and sends the torque value to the controller. The controller extracts the torque value within the preset sampling time during the time when the braking system does not receive the braking signal from the received torque value.

[0135] S116: Determine the torque increase rate of the air pump according to the torque value.

[0136] First, calculate the difference between the torque value of the air pump at the last moment and the torque value at the first moment within the preset sampling time to obtain the increase in torque value. Then calculate the quotient of the increase value and the preset sampling time, and use the quotient as the torque increase rate of the air pump within the preset time, that is, the torque and air pressure increase rate of the air pump.

[0137] When the pre-set sampling time is the time between two adjacent sampling moments, the difference between the torque value at the current sampling moment and the torque value at the previous sampling moment is calculated, and the quotient of the difference and the time between the two adjacent sampling moments is calculated. The quotient is used as the torque increase rate of the air pump at the current sampling moment, that is, the real-time torque increase rate of the air pump.

[0138] Alternatively, in S117 , a torque change trend of the air pump is determined based on the torque value.

[0139] First, the difference between the torque value of the air pump at the last moment and the torque value at the first moment within the preset sampling time is calculated, and the torque change trend of the air pump within the preset time is determined based on the difference.

[0140] When the preset sampling duration is the duration between two adjacent sampling moments, the difference between the torque value at the current sampling moment and the torque value at the previous sampling moment is calculated, and the torque change trend of the air reservoir at the current sampling moment, that is, the real-time torque change trend of the air reservoir, is determined based on the difference.

[0141] In one embodiment, when the difference is greater than 0, the torque change trend of the air pump is an upward trend; when the difference is equal to 0, the torque change trend of the air pump is a stable trend; when the difference is less than 0, the torque change trend of the air pump is a downward trend.

[0142] The method provided in the embodiment of the present application calculates the torque increase rate or torque change trend of the air pump based on the torque value of the air pump when the controller cannot receive the air pressure value of the air cylinder and cannot judge whether the air circuit of the brake system is leaking based on the air pressure value of the air cylinder. The calculation serves as the air pressure characteristic data of the brake system, providing a data basis for judging whether the air circuit of the brake system is leaking.

[0143] In one embodiment, the air pressure characteristic data includes the torque increase rate or torque change trend of the air pump, and the operating parameter value of the air pump may include the torque shutdown threshold and / or the intermittent time, such as Figure 4 As shown, S120: when the air pressure characteristic data meets the air leakage judgment condition, adjusting the operating parameter value of the air pump may include the following steps:

[0144] S123: When the torque increase rate of the air pump is less than the preset torque increase rate, or the torque change trend of the air pump is a downward trend, increase the torque shutdown threshold of the air pump and / or shorten the preset pause time.

[0145] The torque increase rate is an average torque increase rate or a real-time torque increase rate, and the torque change trend is a torque change trend within a preset time or a real-time torque change trend.

[0146] When the torque increase rate of the air pump is less than the preset torque increase rate, or when the torque change trend of the air pump is a downward trend, it indicates that there is a leakage fault in the brake system. The smaller the torque increase rate, the more serious the leakage.

[0147] By increasing the torque shut-off threshold of the air pump and / or shortening the preset interval time, the inflation frequency of the air pump is increased to ensure that the pressure value of the air tank meets the braking requirements.

[0148] S124, when the torque shutdown threshold increases to the peak value and the torque increase rate of the air pump is still less than the preset torque increase rate, or the torque change trend of the air pump is still a downward trend, increase the air pressure opening threshold of the air pump, and / or control the air pump to continue running.

[0149] When the torque shutdown threshold increases to the peak value, the torque increase rate of the air pump is still less than the preset torque increase rate, or the torque change trend of the air pump is still a downward trend, it means that the air pressure value of the air tank cannot meet the braking requirements at this inflation frequency. Further, the air pump is controlled to continue running.

[0150] The method provided in an embodiment of the present application increases the air pump's torque cutoff threshold and / or shortens the preset interval duration when a brake system leaks, thereby increasing the pump's inflation frequency and ensuring that the air reservoir pressure meets braking requirements. If the torque cutoff threshold increases to a peak value and the air pump's torque increase rate remains below the preset torque increase rate, or the air pump's torque change trend remains downward, further measures are taken to increase the air pump's torque cutoff threshold and / or control the air pump to continue operating, so that the air pressure in the air reservoir quickly meets the vehicle's braking requirements and ensures safe driving.

[0151] In one embodiment, the method may further include: S125 , when the torque value of the air pump increases to a torque shutdown threshold, controlling to shut down the air pump.

[0152] When the torque value of the air pump increases to the torque shutdown threshold, the air pressure value in the air reservoir has met the braking demand of the vehicle, and the air pump is controlled to be shut down.

[0153] The method provided in the embodiment of the present application controls the shutdown of the air pump based on the torque value of the air pump and the torque shutdown threshold. Even if the controller cannot receive the air pressure value of the air tank, it can control the operation of the air pump to meet the braking requirements of the vehicle and ensure the safe driving of the vehicle.

[0154] Exemplary devices

[0155] Accordingly, the embodiment of the present application also provides a device for controlling an air pump, such as Figure 4 As shown, the apparatus 400 may include: an acquisition module 410 and an adjustment module 420 .

[0156] The acquisition module 410 is used to acquire air pressure characteristic data of the braking system within a preset time, and the braking system at least includes an air pump and an air reservoir.

[0157] An adjustment module 420 is configured to adjust the operating parameter value of the air pump to maintain the pressure value of the air reservoir within a set range or reduce the rate of decrease of the pressure value in the air reservoir when the air pressure characteristic data meets the air leakage judgment condition;

[0158] The braking system does not receive a braking signal within a preset time, and the air pump is in an open state within a preset time.

[0159] When the air pump in the braking system of the device provided in the embodiment of the present application is in the turned-on state, the air pressure characteristic data of the braking system within a preset time is obtained. The braking system does not receive a braking signal within the preset time, and the air pressure in the air cylinder is not used for braking. Therefore, when the air pressure characteristic data meets the leakage judgment condition, it indicates that there is an air leakage in the air cylinder. By adjusting the operating parameter value of the air pump to keep the pressure value of the air cylinder within the set range, or reducing the decreasing rate of the pressure value in the air cylinder, the braking demand of the vehicle is met, the vehicle can maintain normal driving, and the vehicle's endurance can be improved under the premise of ensuring vehicle safety.

[0160] In one embodiment, the air pressure characteristic data includes the air pressure increase rate or air pressure change trend of the air reservoir, and the acquisition module 410 is specifically configured to:

[0161] Get the pressure value of the gas tank within the preset time;

[0162] Determine the rate of increase of the gas pressure in the gas reservoir according to the pressure value of the gas reservoir within a preset time;

[0163] Alternatively, the pressure change trend of the air reservoir is determined based on the pressure value of the air reservoir within a preset time.

[0164] The device provided in the embodiment of the present application calculates the air pressure increase rate or air pressure change trend of the air cylinder by collecting the air pressure value in the air cylinder when the air pressure sensor of the air cylinder normally collects and sends the air pressure value, and the transmission line between the air pressure sensor and the controller of the braking system normally transmits signals. The collected air pressure value serves as the air pressure characteristic data of the braking system, thereby providing a data basis for determining whether the air circuit of the braking system is leaking.

[0165] In one embodiment, when the air pressure characteristic data includes the air pressure increase rate or the air pressure change trend of the air reservoir, the adjustment module 420 is specifically configured to:

[0166] When the air pressure increasing rate of the air cylinder is less than the preset air pressure increasing rate, or the air pressure changing trend is a downward trend, the operating power of the air pump is increased.

[0167] The device provided in the embodiment of the present application increases the operating power of the air pump and the inflation rate of the air pump based on the air pressure increase rate or air pressure change trend of the air cylinder when there is an air leakage fault in the braking system, thereby increasing the air pressure value in the air cylinder, quickly meeting the vehicle's braking needs, and ensuring safe driving of the vehicle.

[0168] In one embodiment, the adjustment module 420 is also used to increase the air pressure opening threshold of the air pump and / or control the air pump to continue running when the operating power of the air pump increases to the peak power and the air pressure increase rate of the air cylinder is still less than the preset air pressure increase rate, or the air pressure change trend of the air cylinder is still a downward trend.

[0169] The device provided in the embodiment of the present application further takes measures to increase the air pressure opening threshold of the air pump and / or control the continuous operation of the air pump when the operating power of the air pump increases to the peak power but the rising rate of the air pressure value of the air pump is still difficult to meet the braking demand, so as to increase the rising rate of the air pressure value of the air cylinder, so that the air pressure value in the air cylinder can quickly meet the braking demand of the vehicle and ensure the safe driving of the vehicle.

[0170] In one embodiment, the air pressure characteristic data includes an air leakage level, where the air leakage level is a level indicating no air leakage or a level indicating the presence of air leakage. The adjustment module 420 is specifically configured to:

[0171] When the air leakage level is a level indicating that air leakage exists, adjust the operating parameter value of the air pump.

[0172] The device provided in the embodiment of the present application adjusts the operating parameter value of the air pump based on the leakage level, and more accurately controls the braking system to meet the air pressure value required for vehicle braking.

[0173] In one embodiment, the level indicating the presence of air leakage is air leakage level 1, air leakage level 2, or air leakage level 3; the adjustment module 420 may be specifically configured to:

[0174] When the air leakage level is air leakage level 1, increasing the air pressure opening threshold of the air pump;

[0175] When the air leakage level is air leakage level 2, controlling the air pump to continue running;

[0176] When the air leakage level is air leakage level three, the operating power of the air pump is increased to a preset power.

[0177] The device provided in the embodiment of the present application adjusts different operating parameter values of the air pump under different levels of air leakage to meet the air pressure value required for vehicle braking and ensure safe driving of the vehicle.

[0178] In one embodiment, when the level indicating the presence of air leakage is air leakage level two or air leakage level three, the apparatus 400 may further include a control module 430 .

[0179] The control module 430 is used to control the air pump to stop working; and is also used to control the start of the motor braking mode to brake the vehicle through the motor.

[0180] When the braking system has a severe air leakage, the device provided in the embodiment of the present application switches to the motor braking mode to meet the braking needs of the vehicle, ensure the safe driving of the vehicle, and improve the vehicle's endurance.

[0181] In one embodiment, the air pressure characteristic data includes the torque increase rate or torque change trend of the air pump; the acquisition module 410 is specifically configured to:

[0182] Turn on the air pump according to the preset interval time;

[0183] Get the torque value of the air pump within the preset time;

[0184] According to the torque value, determine the torque increase rate of the air pump;

[0185] Alternatively, the torque variation trend of the air pump is determined based on the torque value.

[0186] When the device provided in the embodiment of the present application cannot receive the air pressure value of the air cylinder and cannot determine whether the air circuit of the brake system is leaking based on the air pressure value of the air cylinder, the torque increase rate or torque change trend of the air pump is calculated based on the torque value of the air pump as the air pressure characteristic data of the brake system, providing a data basis for determining whether the air circuit of the brake system is leaking.

[0187] In one embodiment, the air pressure characteristic data includes a torque increase rate or a torque change trend of the air pump. The adjustment module 420 is specifically configured to:

[0188] When the torque increase rate of the air pump is less than the preset torque increase rate, or the torque change trend of the air pump is a downward trend, the torque shutdown threshold of the air pump is increased, and / or the preset pause time is shortened;

[0189] When the torque shutdown threshold increases to the peak value, the air pump's torque increase rate is still less than the preset torque increase rate, or the air pump's torque change trend is still a downward trend, the air pump is controlled to continue running.

[0190] When a brake system leak occurs, the device provided in an embodiment of the present application increases the air pump's torque cutoff threshold and / or shortens the preset interval duration, increasing the pump's inflation frequency to ensure the air reservoir pressure meets braking requirements. If the torque cutoff threshold reaches its peak value and the air pump's torque increase rate remains below the preset torque increase rate, or the air pump's torque trend remains downward, further measures are taken to control the air pump's continued operation, ensuring that the air pressure in the air reservoir quickly meets the vehicle's braking requirements and ensures safe driving.

[0191] In one embodiment, the apparatus 400 may further include a control module 430 .

[0192] The control module 430 is configured to control the air pump to shut down when the torque value of the air pump increases to a torque shut-down threshold.

[0193] The device provided in the embodiment of the present application controls the shutdown of the air pump based on the torque value of the air pump and the torque shutdown threshold. Even if the controller cannot receive the air pressure value of the air cylinder, it can control the operation of the air pump to meet the braking requirements of the vehicle and ensure the safe driving of the vehicle.

[0194] The device provided in this embodiment is based on the same concept as the method for controlling an air pump provided in the above-mentioned embodiments of this application. It can execute the method for controlling an air pump provided in any of the above-mentioned embodiments of this application and has the corresponding functional modules and beneficial effects of executing the method for controlling an air pump. For technical details not fully described in this embodiment, please refer to the specific processing content of the method for controlling an air pump provided in the above-mentioned embodiments of this application, and will not be repeated here.

[0195] Exemplary electronic devices

[0196] Another embodiment of the present application further provides an electronic device, see Figure 5 As shown, the device includes:

[0197] Memory 500 and processor 510;

[0198] The memory 500 is connected to the processor 510 and is used to store programs;

[0199] The processor 510 is configured to implement the method for controlling the air pump disclosed in any of the above embodiments by running the program stored in the memory 200 .

[0200] Specifically, the electronic device may further include: a bus, a communication interface 520 , an input device 530 and an output device 540 .

[0201] The processor 510, the memory 500, the communication interface 520, the input device 530 and the output device 540 are interconnected via a bus.

[0202] A bus may include a pathway that transfers information between components of a computer system.

[0203] Processor 510 can be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, or the like, or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention. Alternatively, it can be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.

[0204] The processor 510 may include a main processor, and may also include a baseband chip, a modem, and the like.

[0205] The memory 500 stores a program for executing the technical solution of the present invention, and may also store an operating system and other key services. Specifically, the program may include program code, which includes computer operating instructions. More specifically, the memory 500 may include read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), other types of dynamic storage devices that can store information and instructions, disk storage, flash, etc.

[0206] Input device 530 may include a device that receives data and information sent by the braking system.

[0207] Output device 540 may include a device that allows information to be output to a user, such as a display screen, a speaker, etc.

[0208] The communication interface 520 may include any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0209] The processor 510 executes the program stored in the memory 500 and calls other devices, which can be used to implement each step of any method for controlling an air pump provided in the above embodiments of the present application.

[0210] The embodiment of the present application further provides a vehicle, which includes Figure 5 The electronic device shown in the vehicle can be used to implement the various steps of any method for controlling an air pump provided in the above embodiments of the present application.

[0211] Exemplary computer program products and storage media

[0212] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps in the method of controlling an air pump according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0213] The computer program product may be written in any combination of one or more programming languages to implement the program code for performing the operations of the embodiments of the present application, including object-oriented programming languages such as Java, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0214] In addition, an embodiment of the present application may also be a storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps in the method of controlling an air pump according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0215] For the sake of simplicity, the aforementioned method embodiments are described as a series of action combinations. However, those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0216] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similarities between the various embodiments can be referred to in conjunction with each other. For device embodiments, since they are generally similar to method embodiments, their description is relatively simple, and for relevant details, reference can be made to the description of the method embodiments.

[0217] The steps in the methods of each embodiment of the present application can be adjusted in sequence, merged, and deleted according to actual needs, and the technical features recorded in each embodiment can be replaced or combined.

[0218] The modules and sub-modules in the devices and terminals of the various embodiments of the present application can be merged, divided, and deleted according to actual needs.

[0219] In the several embodiments provided in this application, it should be understood that the disclosed terminals, devices, and methods can be implemented in other ways. For example, the terminal embodiments described above are merely illustrative. For example, the division of modules or submodules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple submodules or modules can be combined or integrated into another module, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or module, which can be electrical, mechanical or other forms.

[0220] The modules or submodules described as separate components may or may not be physically separate, and the components of the modules or submodules may or may not be physical modules or submodules, that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules may be selected to achieve the purpose of this embodiment according to actual needs.

[0221] In addition, each functional module or submodule in each embodiment of the present application may be integrated into a processing module, or each module or submodule may exist physically separately, or two or more modules or submodules may be integrated into a single module. The above-mentioned integrated modules or submodules may be implemented in the form of hardware or software functional modules or submodules.

[0222] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0223] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, software units executed by a processor, or a combination of the two. The software units may be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0224] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0225] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling an air pump, characterized in that: The method comprises: Acquiring air pressure characteristic data of a braking system within a preset time, wherein the braking system includes at least an air pump and an air reservoir; When the air pressure characteristic data meets the air leakage judgment condition, the operating parameter value of the air pump is adjusted to keep the pressure value of the air reservoir within a set range, or to reduce the decreasing rate of the pressure value in the air reservoir; wherein the braking system does not receive a braking signal within the preset time, and the air pump is in an on state within the preset time; The air pressure characteristic data includes an air leakage level, where the air leakage level is a level indicating no air leakage or a level indicating the presence of air leakage. When the air pressure characteristic data satisfies the air leakage determination condition, adjusting the operating parameter value of the air pump includes: When the air leakage level is a level indicating that air leakage exists, adjusting the operating parameter value of the air pump; The level indicating the presence of air leakage is air leakage level 1, air leakage level 2, or air leakage level 3. When the air leakage level is the level indicating the presence of air leakage, adjusting the operating parameter value of the air pump includes: When the air leakage level is air leakage level 1, increasing the air pressure opening threshold of the air pump; When the air leakage level is air leakage level 2, controlling the air pump to continue running; When the air leakage level is air leakage level three, the operating power of the air pump is increased to a preset power.

2. The method according to claim 1, characterized in that The air pressure characteristic data includes the air pressure increase rate or air pressure change trend of the air reservoir, and the obtaining of the air pressure characteristic data of the braking system within a preset time includes: Obtaining the pressure value of the gas cylinder within the preset time; determining a rate of increase of the air pressure in the air reservoir according to a pressure value of the air reservoir within the preset time; Alternatively, the pressure change trend of the gas cylinder is determined according to the pressure value of the gas cylinder within the preset time.

3. The method according to claim 1 or 2, characterized in that When the air pressure characteristic data includes an air pressure increase rate or an air pressure change trend of the air reservoir, and when the air pressure characteristic data satisfies an air leakage determination condition, adjusting an operating parameter value of the air pump includes: When the air pressure increasing rate of the air cylinder is less than the preset air pressure increasing rate, or when the air pressure changing trend is a downward trend, the operating power of the air pump is increased.

4. The method according to claim 3, characterized in that The method further comprises: When the operating power of the air pump increases to the peak power, the air pressure increase rate of the air cylinder is still less than the preset air pressure increase rate, or the air pressure change trend of the air cylinder is still a downward trend, the air pressure opening threshold of the air pump is increased and / or the air pump is controlled to continue running.

5. The method according to claim 1, wherein The air pressure characteristic data includes the torque increase rate or torque change trend of the air pump; the air pressure characteristic data of the braking system within a preset time is obtained, including: Turn on the air pump according to the preset interval time; Obtaining a torque value of the air pump within the preset time; determining a torque increase rate of the air pump according to the torque value; Alternatively, the torque change trend of the air pump is determined according to the torque value.

6. The method according to claim 1 or 5, characterized in that The air pressure characteristic data includes a torque increase rate or a torque change trend of the air pump, and when the air pressure characteristic data meets the air leakage determination condition, adjusting the operating parameter value of the air pump includes: When the torque increase rate of the air pump is less than the preset torque increase rate, or the torque change trend of the air pump is a downward trend, increasing the torque shutdown threshold of the air pump and / or shortening the preset pause time; When the torque shutdown threshold increases to a peak value and the torque increase rate of the air pump is still less than the preset torque increase rate, or the torque change trend of the air pump is still a downward trend, the air pump is controlled to continue running.

7. A device for controlling an air pump, characterized in that: The device comprises: an acquisition module, configured to acquire air pressure characteristic data of a braking system within a preset time, wherein the braking system comprises at least an air pump and an air reservoir; an adjustment module, configured to adjust an operating parameter value of the air pump when the air pressure characteristic data meets an air leakage determination condition, so as to maintain the pressure value of the air reservoir within a set range or reduce a decreasing rate of the pressure value in the air reservoir; wherein the braking system does not receive a braking signal within the preset time, and the air pump is in an on state within the preset time; The air pressure characteristic data includes an air leakage level, where the air leakage level is a level indicating no air leakage or a level indicating the presence of air leakage; The adjustment module is specifically configured to adjust the operating parameter value of the air pump when the air leakage level is a level indicating the presence of air leakage; The level indicating the presence of air leakage is air leakage level one, air leakage level two or air leakage level three. The adjustment module is specifically used to increase the air pressure opening threshold of the air pump when the air leakage level is air leakage level one; control the air pump to continue running when the air leakage level is air leakage level two; and increase the operating power of the air pump to a preset power when the air leakage level is air leakage level three.

8. An electronic device, characterized in that: The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the method for controlling the air pump according to any one of claims 1 to 6 is implemented.

9. A vehicle, characterized in that: The vehicle includes the electronic device according to claim 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the method for controlling an air pump according to any one of claims 1 to 6.

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