Air compressor control method and device

Abstract

The invention discloses an air compressor control method and device, and relates to the technical field of automatic control. The method comprises the steps that the temperature of the air compressor and the accumulated working duration of the air compressor in a sliding time window are monitored; in response to the situation that the temperature of the air compressor reaches a target temperature threshold value in at least two preset temperature threshold values, starting and stopping control is conducted on the air compressor based on a target control strategy corresponding to the target temperature threshold value; and / or on the basis of the proportion of the accumulated working duration of the air compressor in the sliding time window to the total duration of the sliding time window, the air compressor is controlled to be started and stopped. The air compressor can be effectively prevented from being damaged due to too high temperature and / or too long working time, and the service life of the air compressor can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of automatic control technology, and in particular to an air compressor control method and device. Background Art

[0002] Air compressors (or simply compressors) inflate air springs to adjust the vehicle's suspension height. However, when an air compressor operates for extended periods or under high load, friction and electrical current within its internal components generate significant heat. This not only accelerates component aging and shortens its service life, but can even cause the compressor to burn out, seriously impacting driving safety. Summary of the Invention

[0003] In response to the above technical problems, the embodiments of the present application provide an air compressor control method and device, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working time, but also increase the service life of the air compressor.

[0004] The technical solution of this application is achieved as follows:

[0005] In a first aspect, an embodiment of the present application provides an air compressor control method, comprising:

[0006] Monitoring the temperature of the air compressor and the cumulative operating time of the air compressor within the sliding time window;

[0007] In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold; and / or, the air compressor is started and stopped based on the proportion of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

[0008] In some embodiments, the at least two temperature thresholds include a first temperature threshold and a second temperature threshold;

[0009] In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold, including:

[0010] When it is determined that the air compressor is in an operating state, in response to the temperature of the air compressor reaching the first temperature threshold, controlling the air compressor to continue to operate for a first preset time period and then stop operating; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, controlling the air compressor to stop operating immediately;

[0011] The first temperature threshold is lower than the second temperature threshold.

[0012] In some embodiments, the at least two temperature thresholds further include a third temperature threshold; in response to the temperature of the air compressor reaching a target temperature threshold among the at least two preset temperature thresholds, the start-stop control of the air compressor based on a target control strategy corresponding to the target temperature threshold includes:

[0013] After controlling the air compressor to stop operating, if it is determined that there is a need to restart the air compressor, in response to the temperature of the air compressor dropping to the third temperature threshold, controlling the air compressor to restart operating;

[0014] The third temperature threshold is lower than the first temperature threshold.

[0015] In some embodiments, the air compressor control method further includes:

[0016] When it is determined that the air compressor is in a non-operating state, in response to the temperature of the air compressor being greater than the first temperature threshold, the air compressor is controlled to be prohibited from starting up.

[0017] In some embodiments, the air compressor control method further includes:

[0018] When it is determined that the air compressor is in operation, in response to the temperature of the air compressor reaching the first temperature threshold, a prompt message is output that the air compressor is about to stop running after the first preset time period; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, a prompt message is output that the air compressor is about to stop running at the current moment.

[0019] In some embodiments, the start-stop control of the air compressor based on the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window includes:

[0020] In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching a preset ratio threshold, the air compressor is controlled to stop running.

[0021] In some embodiments, the air compressor control method further includes:

[0022] After the air compressor is controlled to stop running, in response to the accumulated working time of the air compressor in the sliding time window being less than a second preset time, the air compressor is controlled to start running again.

[0023] In some embodiments, the air compressor control method further includes:

[0024] In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching the preset ratio threshold, a prompt message indicating that the air compressor is about to stop running at the current moment is output.

[0025] In some embodiments, the air compressor control method further includes:

[0026] Obtain at least two parameter change values of the air compressor within a preset operating cycle; the parameter change values include a temperature change value of the air compressor, a pressure change value and / or a height change value of a pneumatic container supplied by the air compressor;

[0027] If it is determined that the at least two parameter change values satisfy the threshold judgment conditions respectively corresponding to the at least two parameter change values, determining that the air compressor has a fault;

[0028] Among them, the threshold judgment condition corresponding to the temperature change value is: the temperature change value is less than the preset temperature change threshold; the threshold judgment condition corresponding to the pressure change value is: the pressure change value is less than the preset pressure change threshold; the threshold judgment condition corresponding to the height change value is: the height change value is less than the preset height change threshold.

[0029] In a second aspect, an embodiment of the present application provides an air compressor control device, comprising:

[0030] A monitoring module, configured to monitor the temperature of the air compressor and the accumulated operating time of the air compressor within a sliding time window;

[0031] A control module is used to control the start and stop of the air compressor in response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, based on a target control strategy corresponding to the target temperature threshold; and / or, to control the start and stop of the air compressor based on the proportion of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

[0032] The air compressor control method and device provided in the embodiments of the present application monitor the temperature of the air compressor and the cumulative working time within the sliding time window in real time, and start and stop the air compressor based on the control strategies corresponding to at least two preset temperature thresholds, and start and stop the air compressor based on the ratio of the cumulative working time of the air compressor in the sliding time window to the total time of the sliding time window. In this way, the start and stop control of the air compressor is performed from two dimensions of the air compressor temperature and working time, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working time, but also increase the service life of the air compressor and reduce the maintenance cost of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A structural diagram of a vehicle suspension height adjustment system provided for related technology;

[0035] Figure 2 A schematic diagram of the working principle of an air compressor provided for related technology;

[0036] Figure 3 One of the flow charts of an air compressor control method provided in an embodiment of the present application;

[0037] Figure 4 The second flow chart of an air compressor control method provided in an embodiment of the present application;

[0038] Figure 5 The third flow chart of an air compressor control method provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of temperature changes of an air compressor within a preset operating cycle provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of pressure changes in a pneumatic container supplied with air by an air compressor within a preset operating cycle provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the height change of a pneumatic container supplied with air by an air compressor within a preset operating cycle provided in an embodiment of the present application;

[0042] Figure 9 A schematic diagram of a flow chart for air compressor fault diagnosis provided in an embodiment of the present application;

[0043] Figure 10 A schematic structural diagram of an air compressor control device provided in an embodiment of the present application;

[0044] Figure 11 A schematic diagram of the physical structure of an electronic device provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 1: Left front air spring; 2: Right front air spring; 3: Left rear air spring; 4: Right rear air spring; 5: Left front height sensor; 6: Right front height sensor; 7: Left rear height sensor; 8: Right rear height sensor; 9: Chassis integrated controller; 10: Air compressor. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are 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] It should be noted that, in the description of the embodiments of the present application, the terms "first", "second", etc. are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, in the description of the embodiments of the present application, "and / or" represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0049] In order to facilitate a clearer understanding of the various embodiments of the present application, some relevant technical knowledge is first introduced as follows.

[0050] Vehicles equipped with air springs require an air compressor to inflate the air springs for adjustment of the vehicle's suspension height. However, the longer the air compressor operates or the higher the load, the higher its temperature will be, affecting its service life and even causing overheating and burnout, leading to various air compressor failures. An air compressor failure can make it impossible to adjust the vehicle's suspension height, causing the vehicle to break down and posing a safety hazard. If air compressor fault monitoring is inadequate, users will not be able to visually detect a compressor failure, and the vehicle will continue to drive. Since the air compressor cannot inflate the air springs to adjust the vehicle's suspension height, if the vehicle's suspension height is low, the vehicle chassis is very likely to bottom out, posing a safety risk. Furthermore, the high cost of replacing an air compressor increases the vehicle's maintenance costs for users.

[0051] For example, Figure 1 A structural diagram of a vehicle suspension height adjustment system provided for related technology, such as Figure 1As shown, the system includes a left front air spring 1, a right front air spring 2, a left rear air spring 3, a right rear air spring 4, a left front height sensor 5, a right front height sensor 6, a left rear height sensor 7, a right rear height sensor 8, a chassis integrated controller 9, and an air compressor 10. The air compressor 10 can inflate the left front air spring 1, the right front air spring 2, the left rear air spring 3, and the right rear air spring 4 to adjust the vehicle suspension height; the left front height sensor 5, the right front height sensor 6, the left rear height sensor 7, and the right rear height sensor 8 are used to monitor the heights of the left front air spring 1, the right front air spring 2, the left rear air spring 3, and the right rear air spring 4, respectively; and the chassis integrated controller (VMC) 9 is used to control the start and stop of the air compressor 10.

[0052] For example, Figure 2 A schematic diagram of the working principle of an air compressor provided for related technology, such as Figure 2 As shown, the air compressor's negative terminal is connected to the battery's negative terminal, and its positive terminal is connected to the battery's positive terminal, forming a closed circuit. A relay is installed between the air compressor's positive terminal and the battery's positive terminal, controlled by a pin on the chassis integrated controller. When the air springs (including the left front, right front, left rear, and right rear air springs) and the air tank are not inflated, the relay is disconnected, and the air compressor does not operate. When the air springs or air tank are inflated, the relay closes, and the air compressor begins operating. The relay's status is controlled by the chassis integrated controller (VMC) based on the user's suspension adjustments and the compressor's temperature and pressure sensor signals.

[0053] The prior art lacks a sound air compressor temperature monitoring mechanism and start-stop control strategy. This can lead to overheating during sustained high-load operation. In severe cases, this can cause equipment burnout, impacting the proper functioning of the vehicle's suspension system and even posing a safety hazard. Furthermore, users struggle to detect compressor failures in a timely manner, unable to take effective action, increasing vehicle maintenance costs and user risks.

[0054] In order to improve at least some of the above-mentioned defects in the related art, the embodiment of the present application provides an air compressor control method and device, which monitors the real-time temperature of the air compressor and the cumulative working time within the sliding time window, and performs intelligent start-stop control according to at least two preset temperature thresholds and duty cycle ratio thresholds. It can effectively prevent the air compressor from being damaged due to overheating or long-term continuous operation, extend its service life, and improve the safety of vehicle driving. It also enhances the user's perception of air compressor failures through an early warning mechanism, thereby reducing subsequent maintenance costs. In addition, the embodiment of the present application also proposes a fault diagnosis mechanism based on multi-parameter changes, including indicators such as temperature changes, pressure changes, and altitude changes. When the change amplitude of these parameters is lower than the set threshold, it is determined that the air compressor has a fault and a prompt message is issued, thereby achieving more comprehensive fault identification and protection.

[0055] The air compressor control method and device provided in the embodiments of the present application are exemplarily introduced below in conjunction with the drawings in the embodiments of the present application.

[0056] Figure 3 One of the flow charts of an air compressor control method provided in the embodiment of the present application is as follows: Figure 3 As shown, the method includes:

[0057] S301: Monitor the temperature of the air compressor and the accumulated working time of the air compressor within a sliding time window.

[0058] It should be noted that the air compressor control method provided in the embodiments of this application can be applied to passenger car air spring systems. Passenger car air spring systems can use the air compressor control method provided in the embodiments of this application to control the air compressor to inflate the air springs, thereby adjusting the vehicle suspension height.

[0059] In some embodiments, the air compressor's temperature can be collected in real time by temperature sensors installed in key locations and transmitted to the chassis integrated controller (VMC). The VMC continuously receives and analyzes this temperature data to determine whether a preset temperature threshold has been reached. The temperature sensor can be a thermistor, infrared temperature measurement module, or other device. Its accuracy and response speed affect the system's control effectiveness. The temperature sensor's sampling frequency can be adjusted based on actual needs to balance system response speed with energy consumption.

[0060] It should be noted that the sliding time window is a dynamic time interval used to calculate the cumulative operating time of the air compressor over a continuous period of time. This time interval has a certain length and continuously advances (i.e., slides) as the system runs, thereby dynamically reflecting the load conditions of the air compressor over the recent period. The length of the sliding time window can be adaptively adjusted according to the vehicle's driving state. For example, at high speeds or when the suspension height is frequently adjusted, the sliding time window can be appropriately shortened to improve response speed; at low speeds or when stationary, the sliding time window can be extended to avoid unnecessary frequent starts and stops.

[0061] In some embodiments, the VMC can comprehensively assess the compressor's current operating status based on changes in temperature and the compressor's cumulative operating hours within a sliding time window, and decide whether to initiate start / stop control. This multi-parameter monitoring approach provides a more comprehensive view of the compressor's workload, enabling more precise protection and control.

[0062] S302. In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold; and / or, the air compressor is started and stopped based on the ratio of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

[0063] It should be noted that temperature thresholds refer to a set of temperature values used to determine whether the air compressor is experiencing abnormally high temperatures. Different levels of control strategies are set based on different temperature levels to achieve hierarchical control and protection. For example, the first temperature threshold indicates the start of limiting the air compressor's operating time, while the second temperature threshold represents the critical point at which the air compressor's operation is immediately stopped.

[0064] In some embodiments, when the air compressor temperature reaches a preset temperature threshold (i.e., a target temperature threshold), the VMC can respond according to a corresponding control strategy. For example, when the temperature reaches a first temperature threshold, the maximum continuous operating time of the air compressor can be limited; when the temperature reaches a second, higher temperature threshold, the power supply is immediately cut off, and the air compressor is controlled to stop operation. These temperature thresholds and corresponding control strategies can be pre-stored in the VMC program and configured according to the specific vehicle model and usage environment.

[0065] In some embodiments, if the cumulative operating hours within the sliding time window reach a preset percentage (e.g., 25%), the VMC can also implement a corresponding start-stop control strategy. For example, if the air compressor's cumulative operating hours exceed one hour within any continuous time period T, the air compressor will be controlled to pause and resume operation after a certain waiting period. This duty cycle protection mechanism can effectively prevent overheating and damage to the air compressor due to long-term continuous operation, thereby extending its service life.

[0066] In some embodiments, the VMC can also intelligently adjust based on user behavior. For example, if it detects a user frequently adjusting the height, the VMC can temporarily relax some control conditions to prioritize the user's needs, and then restore the original control strategy after the operation is completed. Furthermore, to enhance the user experience, the VMC can also display pop-up text prompts on the dashboard when abnormal conditions are detected, reminding users of the air compressor status and enhancing their awareness of equipment failures.

[0067] It can be understood that the air compressor control method provided in the embodiment of the present application monitors the temperature of the air compressor and the cumulative working time within the sliding time window in real time, and starts and stops the air compressor based on the control strategy corresponding to at least two preset temperature thresholds, and starts and stops the air compressor based on the ratio of the cumulative working time of the air compressor in the sliding time window to the total time of the sliding time window. In this way, the start and stop control of the air compressor is performed from two dimensions of the temperature and working time of the air compressor, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working time, but also improve the service life of the air compressor. In order to reduce the maintenance cost of the air compressor, the temperature of the air compressor and the cumulative working hours in the sliding time window are monitored in real time, and the start and stop of the air compressor are controlled based on the control strategies corresponding to at least two preset temperature thresholds, and the start and stop of the air compressor are controlled based on the ratio of the cumulative working hours of the air compressor in the sliding time window to the total working time of the sliding time window. In this way, the start and stop of the air compressor is controlled from the two dimensions of the temperature and working hours of the air compressor, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working hours, but also increase the service life of the air compressor and reduce the maintenance cost of the air compressor.

[0068] In some embodiments, the at least two temperature thresholds include a first temperature threshold and a second temperature threshold;

[0069] In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold, including:

[0070] When it is determined that the air compressor is in an operating state, in response to the temperature of the air compressor reaching the first temperature threshold, controlling the air compressor to continue to operate for a first preset time period and then stop operating; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, controlling the air compressor to stop operating immediately;

[0071] The first temperature threshold is lower than the second temperature threshold.

[0072] It should be noted that the first temperature threshold refers to an initial temperature rise protection point set during the operation of the air compressor. When the air compressor temperature rises to this threshold, the delay control phase begins. This threshold can be set below the maximum allowable operating temperature of the air compressor (i.e., the second temperature threshold) to provide a safety margin and avoid overheating risks. For example, in actual applications, the first temperature threshold can be set to 85°C.

[0073] It should be noted that the first preset duration refers to the length of time the air compressor is allowed to continue operating after the air compressor temperature reaches the first temperature threshold. For example, the first preset duration can be set to 60 seconds to ensure that the air compressor has enough time to complete the current inflation task without immediately shutting down and affecting the user experience. This allows intervention before the air compressor reaches dangerous temperatures, extending its service life and reducing the risk of burn-in failures caused by high temperatures.

[0074] It should be noted that the second temperature threshold is a safety threshold higher than the first temperature threshold and is used to trigger the emergency shutdown mechanism. When the air compressor temperature exceeds this threshold, the power supply can be immediately cut off or the relay can be disconnected, completely stopping the air compressor to prevent further temperature rise and damage to the equipment. For example, the second temperature threshold can be set to 100°C. This allows for rapid response to abnormal temperature conditions, preventing the air compressor from operating at high temperatures for extended periods, effectively avoiding burnout and ensuring user safety.

[0075] It should be noted that the first temperature threshold is lower than the second temperature threshold, implementing a hierarchical temperature control strategy. The first temperature threshold serves as a warning mechanism, enabling early intervention and controlling operating time; the second temperature threshold serves as a final protection mechanism, ensuring timely shutdown in extreme situations to avoid irreversible damage. This hierarchical temperature control strategy allows for reasonable control of the air compressor's operating intensity without compromising the user experience, improving its stability and safety, and thus enhancing the overall operational reliability of the vehicle.

[0076] It is understood that in the embodiments of the present application, a hierarchical temperature control strategy is used to control the start and stop of the air compressor. When the operating temperature of the air compressor reaches a lower first temperature threshold, it is allowed to continue running for a period of time before stopping, thereby avoiding the impact of immediate shutdown on its function. When the temperature further rises to a higher second temperature threshold, it is immediately stopped to prevent damage caused by continued high temperature. Compared with the traditional single temperature threshold control method, this strategy is more consistent with the operating characteristics of the air compressor and improves the flexibility and safety of air compressor control.

[0077] In some embodiments, the at least two temperature thresholds further include a third temperature threshold; in response to the temperature of the air compressor reaching a target temperature threshold among the at least two preset temperature thresholds, the start-stop control of the air compressor based on a target control strategy corresponding to the target temperature threshold includes:

[0078] After controlling the air compressor to stop operating, if it is determined that there is a need to restart the air compressor, in response to the temperature of the air compressor dropping to the third temperature threshold, controlling the air compressor to restart operating;

[0079] The third temperature threshold is lower than the first temperature threshold.

[0080] It should be noted that the third temperature threshold is the lower limit of safe temperature at which the air compressor is allowed to restart after it stops. This temperature threshold is lower than the first temperature threshold during normal operation of the air compressor. This ensures that the air compressor can cool to a safe range before resuming operation, preventing overheating and burnout caused by continuous high-temperature operation. For example, if the first temperature threshold is set to 85°C, the third temperature threshold can be set to 60°C to ensure that the air compressor has sufficient time to dissipate heat and return to a stable operating state.

[0081] It should be noted that after the air compressor is stopped, if it is determined that there is a need to restart the air compressor, the air compressor temperature must drop to or below the third temperature threshold before restarting the air compressor. The need to restart the air compressor can be determined based on whether the user intends to adjust the vehicle suspension height, or based on the current actual scenario.

[0082] It should be noted that restarting the air compressor means that after the air compressor temperature drops below the third temperature threshold, the system will restart the air compressor based on the current suspension height adjustment requirements. This process can be determined and controlled by the VMC based on real-time temperature sensor signals. For example, if the user issues a command to raise the suspension height, if the air compressor temperature has dropped below the third temperature threshold, the VMC can control the relay to energize, resuming the air compressor operation and inflating the air spring.

[0083] It can be understood that the embodiment of the present application sets the third temperature threshold as a condition for the air compressor to resume operation, ensuring that the air compressor is reactivated after sufficient cooling, thereby preventing mechanical loss and thermal shock caused by repeated start and stop, while ensuring system stability and safety, and improving user experience.

[0084] In some embodiments, the air compressor control method further includes:

[0085] When it is determined that the air compressor is in a non-operating state, in response to the temperature of the air compressor being greater than the first temperature threshold, the air compressor is controlled to be prohibited from starting up.

[0086] It should be noted that an air compressor refers to a compressed air device used to inflate air springs to adjust the height of a vehicle's suspension. When operating, it can generate high temperatures due to load or prolonged operation, which can affect its service life and even cause burnout. In an embodiment of the present application, the system determines whether to allow the air compressor to start by collecting the signal from the air compressor temperature sensor in real time and comparing it with a set first temperature threshold. If the air compressor is not currently operating but detects that its temperature has exceeded the first temperature threshold, the system will take protective measures, prohibiting the air compressor from starting until the temperature drops to a safe range. The core of this strategy is to prevent the air compressor from starting again, thereby avoiding the risk of overheating caused by restarting the air compressor when the temperature is high. This mechanism can effectively prevent the air compressor from being mistakenly started before it has cooled to a safe temperature. This is especially true if there is a leak in the air tank or air spring, or if the target pressure cannot be reached continuously. The air compressor will repeatedly attempt to start, causing the temperature to continue to rise, ultimately leading to failure. This embodiment of the present application proposes a temperature-based predictive control logic to ensure that the air compressor operates only within a safe temperature range, improving the stability and safety of the system.

[0087] It can be understood that in the embodiment of the present application, by prohibiting the air compressor from starting and running when the air compressor is not running but the temperature is still higher than the safety range, the risk of overheating caused by the air compressor quickly entering a high-load working state after starting is avoided, thereby further improving the protection capability of the air compressor.

[0088] In some embodiments, the air compressor control method further includes:

[0089] When it is determined that the air compressor is in operation, in response to the temperature of the air compressor reaching the first temperature threshold, a prompt message is output that the air compressor is about to stop running after the first preset time period; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, a prompt message is output that the air compressor is about to stop running at the current moment.

[0090] It should be noted that when the air compressor is running and its temperature rises to the set first temperature threshold, the system will enter the over-temperature protection stage. At this time, the air compressor can continue to run, but it is limited to running for the first preset time. After exceeding this time, it will automatically stop running. This control strategy can prevent the air compressor from running for a long time and causing the temperature to continue to rise, thereby avoiding the occurrence of burn-in. Moreover, the embodiment of the present application also sends a prompt message in advance that the air compressor will stop running after the first preset time, so that the user can understand the status of the air compressor in time and make reasonable responses, such as reducing the load or waiting for cooling.

[0091] It's important to note that the first temperature threshold is the initial temperature at which the compressor enters the protective control phase. It's set above the safe operating temperature but still below the critical point where permanent damage could occur. The first preset duration is the maximum time the compressor is allowed to continue operating after reaching this temperature, balancing efficiency and safety.

[0092] In an embodiment of the present application, by providing a pre-shutdown prompt when the air compressor temperature reaches a first temperature threshold, the user's perception of the air compressor's operating status can be improved without affecting the vehicle's suspension height adjustment function. When the air compressor temperature rises further and reaches a higher second temperature threshold, the system can immediately trigger an emergency protection mechanism, forcing the air compressor to stop running and issuing an immediate prompt to the user. This measure can prevent irreversible failures caused by excessive temperatures, such as motor burnout, internal circuit short circuit, etc., thereby ensuring the stability and safety of the vehicle's electrical system.

[0093] It should be noted that the second temperature threshold is higher than the first temperature threshold and can be close to or slightly lower than the maximum temperature tolerance of the air compressor. Once the temperature exceeds this threshold, it indicates that the air compressor is in a high-risk operating state and protective measures must be taken immediately. The embodiment of the present application uses real-time monitoring and a rapid response mechanism to cut off the power supply in the shortest possible time, ensuring that the air compressor will not be damaged by high temperatures.

[0094] It is understandable that the embodiments of the present application can achieve refined management of the operating status of the air compressor by setting different levels of temperature thresholds and adopting two protection strategies: delayed stop and immediate stop. In this way, equipment damage caused by abnormal temperatures can be effectively avoided, thereby extending the life of the air compressor, and further improving the user experience and vehicle safety performance. Moreover, by sending prompt information to the user in advance, the user can understand the operating status of the air compressor and possible shutdown situations, thereby enhancing the user's understanding and sense of security of the system operation, and providing a basis for subsequent operations, which helps to improve the overall user experience and system transparency.

[0095] In some embodiments, the start-stop control of the air compressor based on the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window includes:

[0096] In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching a preset ratio threshold, the air compressor is controlled to stop running.

[0097] It's important to note that a sliding time window is a dynamically updated time period used to monitor the operating status of the air compressor. For example, a sliding time window can be set to 10 minutes. The system continuously calculates the total operating time of the air compressor during this period and determines whether protective measures are needed based on the percentage of operating time. The sliding time window design ensures real-time and continuous monitoring, avoiding monitoring delays or misjudgments caused by fixed time intervals.

[0098] It should be noted that the cumulative operating time refers to the total time the air compressor is actually in operation (i.e., the relay is energized) within the sliding time window. This parameter reflects the load changes of the air compressor over a short period of time and is an important basis for determining whether it is overheating and needs to be suspended.

[0099] It should be noted that the preset ratio threshold is a critical value. When the cumulative operating time of the air compressor within the sliding time window exceeds this threshold, it indicates that the air compressor may be under high load and there is a risk of temperature rise. At this time, the air compressor can be automatically controlled to stop operation to prevent it from overheating and burning.

[0100] It is understood that by setting a sliding time window and combining it with a preset proportional threshold, the system in this embodiment of the application can more accurately assess the operating status of the air compressor, thereby making timely protective controls to avoid failures caused by prolonged high-load operation. This can effectively extend the service life of the air compressor and is more flexible and adaptable than traditional fixed-time control methods.

[0101] In some embodiments, the air compressor control method further includes:

[0102] After the air compressor is controlled to stop running, in response to the accumulated working time of the air compressor in the sliding time window being less than a second preset time, the air compressor is controlled to start running again.

[0103] It should be noted that the second preset duration refers to the minimum cumulative working time threshold required to allow the air compressor to restart within the sliding time window. The purpose of setting this parameter is to prevent the air compressor from overheating due to frequent start-stop, while ensuring that the air supply function of the air compressor is restored under the premise of meeting certain working requirements. This parameter can be set according to the working characteristics, heat dissipation capacity and actual use scenario of the air compressor. For example, it can be set to between 10 seconds and 30 seconds. The specific value depends on the air compressor model and system design goals, and this embodiment of the application does not make specific restrictions on this.

[0104] It should be noted that restarting the air compressor refers to the process of determining whether the conditions for restarting the air compressor are met based on the accumulated operating hours within the current sliding time window after the air compressor has been controlled to stop, and automatically restarting the air compressor when the conditions are met. This process can be comprehensively judged by the VMC based on real-time pressure, temperature, and height signals to ensure that the air compressor resumes operation within a safe range, avoiding insufficient pressure in the air tank or air spring due to long-term inactivity, which may affect the vehicle suspension height adjustment function.

[0105] It is understood that by providing a restart mechanism based on accumulated operating hours after the air compressor stops operating, the present embodiment can effectively protect the air compressor while maintaining the continuity and stability of system operation. This avoids the problem of the air compressor being unable to respond to subsequent inflation needs after an immediate shutdown due to a brief high-load operation, thereby achieving a balance between equipment life and system performance.

[0106] In some embodiments, the air compressor control method further includes:

[0107] In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching the preset ratio threshold, a prompt message indicating that the air compressor is about to stop running at the current moment is output.

[0108] It should be noted that the sliding time window refers to a time interval that is dynamically updated within a period of time and is used to monitor the working status of the air compressor in real time. For example, the system can set a sliding time window with a length of 5 minutes and update the window content every 1 minute to continuously monitor the working status of the air compressor. This mechanism can effectively reflect the operating trend of the air compressor in the recent period and avoid misjudging its overall working status due to short-term fluctuations. The cumulative working time refers to the total time that the air compressor is actually in the working state (i.e., the relay is energized and current is flowing) within the current sliding time window. This parameter can be judged by changes in the status signal of the air compressor relay or the temperature sensor signal. When the air compressor is in the running state, the system starts timing; when the air compressor stops or enters the protection state, the timing is paused.

[0109] It's important to note that the preset ratio threshold is a pre-set percentage value used to measure whether the air compressor's workload is too high within the sliding time window. For example, if the preset ratio threshold is 70%, it means that if the air compressor is in operation for more than 3.5 minutes within a 5-minute sliding time window, its workload is considered to be close to the limit and there is a risk of overheating.

[0110] It should be noted that a prompt message is a user-perceivable warning or notification that informs the user of the reason the air compressor is about to stop operating. This prompt can be provided through text, voice, or light warnings on the vehicle's dashboard. The purpose of the prompt message is to promptly inform the user of the system's protective measures for the air compressor, avoid potential safety hazards from continued operation, and remind the user to check the air spring system for any anomalies.

[0111] It is understood that by monitoring the cumulative operating hours of the air compressor within a sliding time window and comparing the ratio of the cumulative operating hours to the total duration of the sliding time window with a preset ratio threshold, the system can proactively intervene before the air compressor is about to overheat or fail, preventing the air compressor from burning out due to prolonged high-load operation. At the same time, prompting users with prompt information helps improve their understanding of the air compressor status, enhancing system security and user experience.

[0112] In some embodiments, the air compressor control method further includes:

[0113] Obtain at least two parameter change values of the air compressor within a preset operating cycle; the parameter change values include a temperature change value of the air compressor, a pressure change value and / or a height change value of a pneumatic container supplied by the air compressor;

[0114] If it is determined that the at least two parameter change values satisfy the threshold judgment conditions respectively corresponding to the at least two parameter change values, determining that the air compressor has a fault;

[0115] Among them, the threshold judgment condition corresponding to the temperature change value is: the temperature change value is less than the preset temperature change threshold; the threshold judgment condition corresponding to the pressure change value is: the pressure change value is less than the preset pressure change threshold; the threshold judgment condition corresponding to the height change value is: the height change value is less than the preset height change threshold.

[0116] It should be noted that parameter change values refer to the changes in parameters related to the compressor's operating status within a preset operating cycle. These parameters are used to assess whether the compressor is functioning properly. For example, the temperature change value reflects the temperature trend of the compressor during continuous operation; the pressure change value indicates the pressure fluctuation when the compressor's output gas inflates a pneumatic container (such as an air spring or air tank); and the height change value indicates the change in vehicle suspension height caused by gas injection. These parameter change values reflect the compressor's actual performance in operation. By monitoring these changes, abnormal compressor behavior can be determined, thereby enabling fault early warning and diagnosis. For example, a small temperature change value may indicate poor heat dissipation or internal component wear; an abnormal pressure change value may indicate a blockage or leak in the air supply line; and an abnormal height change value may indicate a mechanical problem with the air spring system. This allows the compressor's operating status to be determined by integrating multiple parameter change trends without relying on a single sensor signal, improving the accuracy and reliability of fault detection and thus enhancing system safety.

[0117] It should be noted that the threshold judgment condition refers to the judgment standard set for each parameter change value. Only when the parameter change value meets its corresponding threshold condition is the parameter considered abnormal. For example, if the temperature change value is less than the preset temperature change threshold, it is considered that the air compressor's heat dissipation capacity is insufficient and there may be a risk of failure. Similarly, if the pressure change value or the height change value also meet their respective threshold judgment conditions, it is further confirmed that the possibility of air compressor failure is high. This multi-parameter joint judgment mechanism has a higher misjudgment tolerance and more comprehensive fault identification capabilities than the single-parameter judgment method. By setting a reasonable threshold range, normal operating conditions can be effectively distinguished from abnormal operating conditions, avoiding false alarms or missed alarms, and improving the control system's perception of the air compressor status.

[0118] It should be noted that the preset temperature change thresholds, pressure change thresholds, and altitude change thresholds are benchmark values set based on the typical parameter variation ranges during normal air compressor operation. For example, statistical analysis of a large amount of sample data can determine a reasonable temperature change threshold, ensuring that under normal operation, the temperature change value does not fall below this threshold. Conversely, if the temperature change value deviates significantly from this benchmark value, it can be determined that there is a problem with the air compressor's cooling system or an abnormal load. Similarly, the pressure change thresholds and altitude change thresholds can be set based on similar principles to ensure the stability and controllability of the air compressor during the air supply process. These thresholds can be pre-configured in the controller software and dynamically adjusted based on factors such as the vehicle model and ambient temperature. This allows for accurate identification of various potential air compressor failure modes, improving vehicle operational stability under complex operating conditions, ensuring a safe travel experience for users, and reducing the incidence of serious failures such as air compressor burnout.

[0119] It can be understood that the embodiment of the present application obtains multiple parameter change values of the air compressor within a preset operating cycle, and performs a comprehensive analysis based on the threshold judgment conditions corresponding to each parameter change value, so as to determine whether the air compressor has a fault. Compared with a single parameter judgment, it is more reliable, can effectively identify abnormal operating conditions, and improve the accuracy of fault diagnosis, thereby ensuring vehicle driving safety.

[0120] In some embodiments, in order to extend the service life of the air compressor and ensure the safety of the user's vehicle, the protection control strategy formulated for the air compressor includes:

[0121] (1) Over-temperature protection strategy: When the air compressor is working, after the temperature rises to the first temperature threshold T1, the air compressor is controlled to work for a maximum of the first preset time t1; when the air compressor temperature is greater than the second temperature threshold T2, the air compressor is controlled to stop working immediately until the air compressor temperature is less than the third temperature threshold T3; when the air compressor is not working, its initial temperature is above the first temperature threshold T1, the air compressor is controlled to be prohibited from starting, and the air compressor can be controlled to start working only after the air compressor temperature is less than the third temperature threshold T3; when the air compressor temperature is greater than the first temperature threshold T1 or the second temperature threshold T2, the VMC can report an over-temperature fault (Diagnostic Trouble Code, DTC) and pop up a corresponding text prompt (for example, a prompt that the air compressor is about to stop running) to the instrument.

[0122] It should be noted that the first temperature threshold T1 represents the operating temperature threshold of the air compressor; the first preset time t1 represents the maximum working time of the air compressor after reaching the operating temperature threshold; the second temperature threshold T2 represents the maximum operating temperature of the air compressor; and the third temperature threshold T3 represents the safety temperature threshold of the air compressor.

[0123] For example, Figure 4 The second flow chart of an air compressor control method provided in the embodiment of the present application is as follows: Figure 4 As shown, the method includes:

[0124] S401, determine whether the air compressor temperature exceeds T3; if so, execute S402; if not, execute S403;

[0125] S402, controlling the air compressor to not work, i.e. prohibiting the air compressor from starting and running;

[0126] S403, control the air compressor to work; during the operation of the air compressor, execute S404 and S405;

[0127] S404, determine whether the air compressor temperature exceeds T1; if so, execute S406 and S407; if not, execute S403;

[0128] S405, determine whether the air compressor temperature exceeds T2; if so, execute S402 and S407; if not, execute S403;

[0129] S406, controlling the air compressor to work for a maximum of t1 time;

[0130] S407, the instrument reports a fault code and text prompt.

[0131] (2) Duty cycle protection strategy: The maximum working time of the air compressor within any continuous time T (equivalent to the sliding time window mentioned above) is t2, and the ratio of t2 to the total time of the continuous time T is the duty cycle threshold (for example, 25%); when the cumulative working time is less than t3, it can be restarted; when the cumulative working time of the air compressor within any continuous time T reaches t2, the VMC can report a working timeout fault and a corresponding text prompt to the user.

[0132] It should be noted that t2 represents the maximum cumulative working time of the air compressor within the continuous time T; t3 represents the minimum cumulative working time of the air compressor when it is restarted.

[0133] It can be understood that duty cycle protection refers to preventing overheating or burning of the air compressor due to long-term continuous operation by controlling the maximum proportion of the air compressor allowed to work within a certain period of time.

[0134] For example, Figure 5 The third flow chart of an air compressor control method provided in the embodiment of the present application is as follows: Figure 5 As shown, the method includes:

[0135] S501, control the operation of the air compressor;

[0136] S502, determine whether the cumulative operating time of the air compressor in any continuous time T exceeds t2; if so, execute S503 and S505; if not, return to S501;

[0137] S503, controlling the air compressor to not work, that is, controlling the air compressor to stop working;

[0138] S504: Determine whether the accumulated working time of the air compressor is less than t3. If so, return to S501; if not, return to S503;

[0139] S505: The instrument reports a fault code and text prompt.

[0140] It should be noted that regardless of whether the vehicle is static or dynamic, the set temperature threshold is the same, and the temperature sensor feeds back the air compressor temperature signal to the VMC controller in real time as a basis for air compressor protection judgment. Currently, most air compressor after-sales problems are caused by unreasonable or uncontrolled air compressor temperature protection control, such as air spring leakage, air tank leakage, and the air spring failing to reach the target height or target pressure, resulting in high-temperature burnout after long-term operation of the air compressor. The embodiment of the present application can prevent the air compressor from continuously working at excessively high temperatures, resulting in air compressor burnout.

[0141] In some embodiments, to extend the service life of the air compressor and ensure the safety of the user's vehicle, a fault diagnosis mechanism developed for the air compressor includes:

[0142] (1) Determine whether the air compressor is faulty by observing the temperature change of the air compressor. For example, if the air compressor is operating (i.e., the relay is energized) within a preset operating cycle and the temperature change of the air compressor is less than the preset temperature change threshold Δt, the air compressor is determined to be faulty and the VMC can report the fault and provide a text prompt to the user.

[0143] For example, Figure 6 A schematic diagram of the temperature change of an air compressor within a preset operating cycle provided in an embodiment of the present application is shown as follows: Figure 6 As shown in the figure, between the two dotted lines (i.e., within the preset operating cycle), the air compressor temperature shows a continuous upward trend. If the temperature change of the air compressor within this interval is less than the preset temperature change threshold, it can be determined that the air compressor is faulty.

[0144] (2) Determine whether the air compressor is faulty by measuring the pressure change in the pneumatic container (such as an air spring or air tank) supplied by the air compressor. For example, if the air compressor is operating (i.e., the relay is energized) within a preset operating cycle, and the pressure change in the pneumatic container is less than the preset pressure change threshold Δp, the air compressor is determined to be faulty, and the VMC can report the fault and provide a text prompt to the user.

[0145] For example, Figure 7A schematic diagram of pressure changes in a pneumatic container supplied with air by an air compressor within a preset operating cycle is provided in an embodiment of the present application, such as Figure 7 As shown, between the two dotted lines (i.e., within the preset operating cycle), the pressure value of the pneumatic container shows a continuous upward trend. If the pressure change of the pneumatic container within this interval is less than the preset pressure change threshold, it can be determined that the air compressor is faulty.

[0146] (3) Determine whether the air compressor is faulty by measuring the height change of the pneumatic container (such as an air spring) supplied by the air compressor. For example, if the air compressor is operating (i.e., the relay is energized) within a preset operating cycle, and the height change of the pneumatic container is less than the preset height change threshold Δh, the air compressor is determined to be faulty, and the VMC can report the fault and provide a text prompt to the user.

[0147] For example, Figure 8 A schematic diagram of the height change of a pneumatic container supplied with air by an air compressor within a preset operating cycle is provided in an embodiment of the present application, such as Figure 8 As shown, between the two dashed lines (i.e., within the preset operating cycle), the height values of the right and left front air springs both show a continuous upward trend. If the height change of the right and / or left front air springs within this interval is less than the preset pressure change threshold, it can be determined that the air compressor is faulty.

[0148] In some embodiments, to prevent environmental factors from causing false air compressor fault determinations, when any of the above threshold determination conditions is met, the VMC controller can re-determine whether the remaining two threshold determination conditions, or one of the remaining two threshold determination conditions, are met. If one of the remaining two threshold determination conditions is met, the air compressor is determined to be faulty; otherwise, the air compressor is determined to be normal.

[0149] For example, Figure 9 A flow chart of an air compressor fault diagnosis process provided in an embodiment of the present application is shown as follows: Figure 9 As shown, the process includes:

[0150] S901. Perform fault diagnosis on the air compressor within a preset operating cycle;

[0151] S902, determine whether the temperature change of the air compressor is less than Δt; if so, execute S903 and S904; if not, execute S905;

[0152] S903, determine whether the pressure change of the pneumatic container is less than Δp; if so, execute S904 and S906;

[0153] S904, determine whether the height change of the pneumatic container is less than Δh; if so, execute S906;

[0154] S905, determine whether the pressure change of the pneumatic container is less than Δp; if so, execute S904;

[0155] S906: Determine that the air compressor is faulty;

[0156] S907, the instrument reports a fault code and text prompt.

[0157] It is understood that in the embodiment of the present application, if the air compressor temperature change is less than Δt and the pneumatic container pressure change is less than Δp, then the air compressor is determined to be faulty; if the air compressor temperature change is less than Δt and the pneumatic container height change is less than Δh, then the air compressor is determined to be faulty; if the air compressor temperature change is less than Δt, the pneumatic container pressure change is less than Δp, and the pneumatic container height change is less than Δh, then the air compressor is determined to be faulty; if the air compressor temperature change is not less than Δt, but the pneumatic container pressure change is less than Δp and the pneumatic container height change is less than Δh, then the air compressor is determined to be faulty. In addition, if the air compressor is determined to be faulty, a fault code and text prompt can be reported through the instrument.

[0158] It should be noted that the VMC can be used as the control unit of the air compressor. When the VMC receives the driver's suspension height adjustment command, it can control the air compressor relay to be closed or disconnected to control the operation of the air compressor. The suspension height sensor feeds back the height signal to the VMC. The VMC determines whether the suspension target height has been reached based on the feedback signal from the height sensor, and thus decides whether to stop the air compressor. At the same time, the air compressor temperature sensor signal is fed back to the VMC. The VMC designs a threshold judgment based on the temperature acquisition signal to control the start and stop of the air compressor. In addition, the pressure sensor signal can also feed back the pressure acquisition signal to the VMC. The VMC designs a threshold judgment based on the pressure acquisition signal to control the start and stop of the air compressor.

[0159] It is understood that in the embodiments of this application, when the vehicle's height is adjusted, the air compressor inflates the air springs, allowing the vehicle's suspension height to be adjusted normally. Air compressor fault diagnosis and its control strategy are used to extend the air compressor's service life, improve the user's perception of air compressor failures, ensure vehicle safety, and thus reduce the user's pressure on air compressor maintenance costs. Furthermore, the entire vehicle's air spring height adjustment is controlled by the VMC, including air compressor failure diagnosis, effectively achieving integrated control of the air compressor and simplifying the vehicle's control system.

[0160] The air compressor control device provided in an embodiment of the present application is described below. The air compressor control device described below and the air compressor control method described above can be referenced to each other.

[0161] Figure 10 A schematic diagram of the structure of an air compressor control device provided in an embodiment of the present application is shown in FIG. Figure 10As shown, the device includes: a monitoring module 1010 and a control module 1020; wherein:

[0162] A monitoring module 1010 is configured to monitor the temperature of the air compressor and the accumulated operating time of the air compressor within a sliding time window;

[0163] The control module 1020 is used to control the start and stop of the air compressor in response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, based on a target control strategy corresponding to the target temperature threshold; and / or, to control the start and stop of the air compressor based on the ratio of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

[0164] The air compressor control device provided in the embodiment of the present application monitors the temperature of the air compressor and the accumulated working time in the sliding time window in real time, and controls the start and stop of the air compressor based on the control strategy corresponding to at least two preset temperature thresholds, and controls the start and stop of the air compressor based on the ratio of the accumulated working time of the air compressor in the sliding time window to the total time of the sliding time window. In this way, the start and stop control of the air compressor is performed from the two dimensions of the temperature and working time of the air compressor, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working time, but also improve the service life of the air compressor and reduce The maintenance cost of the air compressor is reduced by real-time monitoring of the temperature of the air compressor and the cumulative working hours within the sliding time window, and the start and stop control of the air compressor is carried out based on the control strategies corresponding to at least two preset temperature thresholds, and the start and stop control of the air compressor is carried out based on the ratio of the cumulative working hours of the air compressor in the sliding time window to the total time of the sliding time window. In this way, the start and stop control of the air compressor is carried out from the two dimensions of the air compressor temperature and working hours, which can not only effectively prevent the air compressor from being damaged due to excessive temperature and / or excessive working hours, but also increase the service life of the air compressor and reduce the maintenance cost of the air compressor.

[0165] In some embodiments, the at least two temperature thresholds include a first temperature threshold and a second temperature threshold;

[0166] The control module 1020 is further configured to:

[0167] When it is determined that the air compressor is in an operating state, in response to the temperature of the air compressor reaching the first temperature threshold, controlling the air compressor to continue to operate for a first preset time period and then stop operating; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, controlling the air compressor to stop operating immediately;

[0168] The first temperature threshold is lower than the second temperature threshold.

[0169] In some embodiments, the at least two temperature thresholds further include a third temperature threshold;

[0170] The control module 1020 is further configured to:

[0171] After controlling the air compressor to stop operating, if it is determined that there is a need to restart the air compressor, in response to the temperature of the air compressor dropping to the third temperature threshold, controlling the air compressor to restart operating;

[0172] The third temperature threshold is lower than the first temperature threshold.

[0173] In some embodiments, the control module 1020 is further configured to:

[0174] When it is determined that the air compressor is in a non-operating state, in response to the temperature of the air compressor being greater than the first temperature threshold, the air compressor is controlled to be prohibited from starting up.

[0175] In some embodiments, the apparatus further comprises:

[0176] The first prompt module is used to, when it is determined that the air compressor is in an operating state, output a prompt message that the air compressor is about to stop running after the first preset time period in response to the temperature of the air compressor reaching the first temperature threshold; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, output a prompt message that the air compressor is about to stop running at the current moment.

[0177] In some embodiments, the control module 1020 is further configured to:

[0178] In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching a preset ratio threshold, the air compressor is controlled to stop running.

[0179] In some embodiments, the control module 1020 is further configured to:

[0180] After the air compressor is controlled to stop running, in response to the accumulated working time of the air compressor in the sliding time window being less than a second preset time, the air compressor is controlled to start running again.

[0181] In some embodiments, the apparatus further comprises:

[0182] The second prompt module is used to output a prompt message that the air compressor is about to stop running at the current moment in response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching the preset ratio threshold.

[0183] In some embodiments, the apparatus further comprises:

[0184] an acquisition module, configured to acquire at least two parameter change values of the air compressor within a preset operating cycle; the parameter change values include a temperature change value of the air compressor, a pressure change value and / or a height change value of a pneumatic container supplied by the air compressor;

[0185] a determination module, configured to determine that a fault exists in the air compressor when it is determined that the at least two parameter change values satisfy threshold judgment conditions respectively corresponding to the at least two parameter change values;

[0186] Among them, the threshold judgment condition corresponding to the temperature change value is: the temperature change value is less than the preset temperature change threshold; the threshold judgment condition corresponding to the pressure change value is: the pressure change value is less than the preset pressure change threshold; the threshold judgment condition corresponding to the height change value is: the height change value is less than the preset height change threshold.

[0187] It should be noted here that the above-mentioned air compressor control device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned air compressor control method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0188] Figure 11 A schematic diagram of the physical structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 11 As shown, the electronic device may include: a processor 1110, a communication interface 1120, a memory 1130, and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other via the communication bus 1140. The processor 1110 may execute executable data instructions stored in the memory 1130 to implement some or all of the steps in the air compressor control method provided in the above embodiments.

[0189] In addition, the executable data instructions stored in the above-mentioned memory 1130 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

[0190] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, some or all of the steps in the air compressor control method provided in the above embodiments are implemented.

[0191] An embodiment of the present application further provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are executed by a processor, some or all of the steps in the air compressor control method provided in the above embodiments are implemented.

[0192] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0193] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware. Furthermore, the embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0194] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0195] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0196] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0197] The above description is merely an optional embodiment of the present application and is not intended to limit the scope of protection of the present application.

Claims

1. A method for controlling an air compressor, characterized in that: include: Monitoring the temperature of the air compressor and the cumulative operating time of the air compressor within the sliding time window; In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold; and / or, the air compressor is started and stopped based on the proportion of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

2. The air compressor control method according to claim 1, characterized in that: The at least two temperature thresholds include a first temperature threshold and a second temperature threshold; In response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, the air compressor is started and stopped based on a target control strategy corresponding to the target temperature threshold, including: When it is determined that the air compressor is in an operating state, in response to the temperature of the air compressor reaching the first temperature threshold, controlling the air compressor to continue to operate for a first preset time period and then stop operating; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, controlling the air compressor to stop operating immediately; The first temperature threshold is lower than the second temperature threshold.

3. The air compressor control method according to claim 2, characterized in that: The at least two temperature thresholds further include a third temperature threshold; in response to the temperature of the air compressor reaching a target temperature threshold among the at least two preset temperature thresholds, the start-stop control of the air compressor is performed based on a target control strategy corresponding to the target temperature threshold, including: After controlling the air compressor to stop operating, if it is determined that there is a need to restart the air compressor, in response to the temperature of the air compressor dropping to the third temperature threshold, controlling the air compressor to restart operating; The third temperature threshold is lower than the first temperature threshold.

4. The air compressor control method according to claim 2 or 3, characterized in that: The method further comprises: When it is determined that the air compressor is in a non-operating state, in response to the temperature of the air compressor being greater than the first temperature threshold, the air compressor is controlled to be prohibited from starting up.

5. The air compressor control method according to claim 2 or 3, characterized in that: The method further comprises: When it is determined that the air compressor is in operation, in response to the temperature of the air compressor reaching the first temperature threshold, a prompt message is output that the air compressor is about to stop running after the first preset time period; and / or, in response to the temperature of the air compressor reaching the second temperature threshold, a prompt message is output that the air compressor is about to stop running at the current moment.

6. The air compressor control method according to claim 1, characterized in that: The start-stop control of the air compressor based on the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window includes: In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching a preset ratio threshold, the air compressor is controlled to stop running.

7. The air compressor control method according to claim 6, characterized in that: The method further comprises: After the air compressor is controlled to stop running, in response to the accumulated working time of the air compressor in the sliding time window being less than a second preset time, the air compressor is controlled to start running again.

8. The air compressor control method according to claim 6 or 7, characterized in that: The method further comprises: In response to the ratio of the accumulated working time of the air compressor in the sliding time window to the total working time of the sliding time window reaching the preset ratio threshold, a prompt message indicating that the air compressor is about to stop running at the current moment is output.

9. The air compressor control method according to any one of claims 1 to 3, characterized in that: The method further comprises: Obtain at least two parameter change values of the air compressor within a preset operating cycle; the parameter change values include a temperature change value of the air compressor, a pressure change value and / or a height change value of a pneumatic container supplied by the air compressor; If it is determined that the at least two parameter change values satisfy the threshold judgment conditions respectively corresponding to the at least two parameter change values, determining that the air compressor has a fault; Among them, the threshold judgment condition corresponding to the temperature change value is: the temperature change value is less than the preset temperature change threshold; the threshold judgment condition corresponding to the pressure change value is: the pressure change value is less than the preset pressure change threshold; the threshold judgment condition corresponding to the height change value is: the height change value is less than the preset height change threshold.

10. An air compressor control device, characterized in that: include: A monitoring module, configured to monitor the temperature of the air compressor and the accumulated operating time of the air compressor within a sliding time window; A control module is used to control the start and stop of the air compressor in response to the temperature of the air compressor reaching a target temperature threshold among at least two preset temperature thresholds, based on a target control strategy corresponding to the target temperature threshold; and / or, to control the start and stop of the air compressor based on the proportion of the cumulative working time of the air compressor in the sliding time window to the total working time of the sliding time window.

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