Electric air compressor control method, device and equipment and readable storage medium

Abstract

The invention discloses an electric air compressor control method, device and equipment and a readable storage medium. The electric air compressor control method comprises the steps that the dew point drop of gas in a gas storage tank is calculated; if the dew point drop is larger than or equal to the first preset dew point drop, the electric air compressor is controlled to be started when the air pressure of the air storage tank is reduced to the first preset air pressure, and the first preset air pressure is smaller than the preset inflation starting air pressure and larger than the preset safety braking air pressure; and if the dew point drop is smaller than the first preset dew point drop, the electric air compressor is controlled to be started when the air pressure of the air storage tank is reduced to the preset inflation starting air pressure. According to the application, if the dew point drop is greater than or equal to the first set pre-dew point drop, the air compressor is started when the air pressure of the air storage tank is reduced to a relatively lower level, so that noise and energy consumption caused by frequent starting of the air compressor are avoided, and if the dew point drop is less than the first set pre-dew point drop, the air compressor is started. The air compressor is started when the air pressure of the air storage tank is reduced to the preset inflation starting air pressure with the relatively higher level, and the drying effect of the dryer is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electric air compressors for new energy trucks, and in particular to an electric air compressor control method, device, equipment and readable storage medium. Background Art

[0002] The air compressed by the air compressor is dried by the dryer and then stored in the air tank for use in the vehicle braking system. The dryer usually contains adsorbents (such as molecular sieves or silica gel) that can capture and retain moisture in the compressed air passing through. When the air pressure in the air tank rises to the dryer cut-off pressure, the air tank blows dry gas back into the dryer to take away the moisture in the dryer so that the dryer can regain its drying capacity. In order to fully back-blow the dryer to ensure the drying effect of the dryer and avoid the risk of valve corrosion caused by water entering the brake system, the mechanical dryer usually selected will be set with a smaller pressure drop, pressure drop = dryer cut-off pressure - dryer access pressure.

[0003] At present, the brake system of new energy trucks matched with mechanical dryers mostly uses the following control strategies for electric air compressors: a pressure switch is installed on the dryer. When the dryer cuts off the air pressure, the pressure switch is turned on and outputs a high level. The electric air compressor controller controls the air compressor to stop, that is, the pressure at which the air compressor stops pumping is the dryer cut-off pressure; when the dryer is connected to the pressure, the pressure switch is disconnected and outputs a low level. The electric air compressor starts pumping, that is, the air compressor start-up pressure is the dryer connection pressure. The cut-off pressure and connection pressure of the dryer are realized by its own mechanical structure. For different models, the volume of the air tank is different, and the actual braking air consumption is different. The smaller pressure drop setting matched with the same mechanical dryer may control the air compressor to start and inflate the air tank when the air pressure of the air tank is still at a relatively high level when the dryer has sufficient drying efficiency. This will cause the air compressor to start frequently, bringing more noise and energy consumption, thus affecting the driving experience.

[0004] In summary, the current control strategy for electric air compressors matching mechanical dryers is not reasonable enough. Summary of the invention

[0005] The present application provides an electric air compressor control method, device, equipment and readable storage medium, aiming to solve the technical problem that the control strategy of the electric air compressor of the electric truck currently matched with a mechanical dryer cannot meet the actual needs of each vehicle due to the small pressure drop of the mechanical dryer.

[0006] In a first aspect, an embodiment of the present application provides an electric air compressor control method, the electric air compressor control method comprising:

[0007] Calculate the dew point drop of the gas in the gas tank;

[0008] If the dew point drop is greater than or equal to a first preset dew point drop, controlling the electric air compressor to start when the air pressure in the air storage tank drops to a first preset air pressure, wherein the first preset air pressure is less than a preset starting inflation pressure and greater than a preset safety brake pressure;

[0009] If the dew point drop is less than the first preset dew point drop, the electric air compressor is controlled to start when the air pressure in the air storage tank drops to the preset starting inflation pressure.

[0010] Optionally, the calculating the dew point drop of the gas in the gas storage tank includes:

[0011] Obtain the ambient temperature and the dew point temperature of the gas in the gas tank;

[0012] The dew point drop of the gas in the gas tank is calculated by subtracting the dew point temperature of the gas in the gas tank from the ambient temperature.

[0013] Optionally, the electric air compressor control method further includes:

[0014] When it is detected that the dew point drop of the gas in the gas storage tank is less than the second preset dew point drop for a duration reaching the first preset time, an early warning of low drying efficiency of the dryer is output, and the second preset dew point drop is less than the first preset dew point drop.

[0015] Optionally, the calculating the dew point drop of the gas in the gas storage tank further includes:

[0016] When the pressure switch of the dryer is detected to be at a low level, the dew point drop of the gas in the gas storage tank is calculated, wherein when the gas pressure of the gas storage tank is less than or equal to the preset starting inflation pressure, the pressure switch of the dryer outputs a low level;

[0017] The electric air compressor control method also includes:

[0018] When it is detected that the pressure switch of the dryer is at a high level, the electric air compressor is controlled to stop, wherein when the air pressure of the air storage tank is greater than or equal to the preset stop inflation pressure, the pressure switch of the dryer outputs a high level.

[0019] Optionally, the electric air compressor control method further includes:

[0020] When it is detected that the electric air compressor is in the starting state and the duration of the pressure switch of the dryer being at a low level reaches a second preset time, an output pressure switch disconnection or air leakage warning is issued.

[0021] Optionally, the electric air compressor control method further includes:

[0022] When it is detected that the air pressure in the air tank is less than the preset safety brake air pressure and the duration of the pressure switch being at a high level reaches a third preset duration, an output pressure switch short circuit or air pressure sensor failure warning is issued.

[0023] In a second aspect, an embodiment of the present application provides an electric air compressor control device, the electric air compressor control device comprising:

[0024] A calculation module, used to calculate the dew point drop of the gas in the gas storage tank;

[0025] a first control module, configured to control the electric air compressor to start when the air pressure in the air storage tank drops to a first preset air pressure if the dew point drop is greater than or equal to a first preset dew point drop, wherein the first preset air pressure is less than a preset starting inflation pressure and greater than a preset safety brake pressure;

[0026] The second control module is used to control the electric air compressor to start when the air pressure in the air storage tank drops to a preset starting inflation pressure if the dew point drop is less than a first preset dew point drop.

[0027] Optionally, the computing module is used to:

[0028] Obtain the ambient temperature and the dew point temperature of the gas in the gas tank;

[0029] The dew point drop of the gas in the gas tank is calculated by subtracting the dew point temperature of the gas in the gas tank from the ambient temperature.

[0030] In the third aspect, an embodiment of the present application provides an electric air compressor control device, which includes a processor, a memory, and an electric air compressor control program stored in the memory and executable by the processor, wherein when the electric air compressor control program is executed by the processor, the steps of the electric air compressor control method described above are implemented.

[0031] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which an electric air compressor control program is stored, wherein when the electric air compressor control program is executed by a processor, the steps of the electric air compressor control method as described above are implemented.

[0032] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0033] In an embodiment of the present application, the dew point drop of the gas in the gas tank is calculated; if the dew point drop is greater than or equal to a first preset dew point drop, the electric air compressor is controlled to start when the air pressure in the gas tank drops to a first preset air pressure, and the first preset air pressure is less than the preset starting inflation pressure and greater than the preset safety brake pressure; if the dew point drop is less than the first preset dew point drop, the electric air compressor is controlled to start when the air pressure in the gas tank drops to the preset starting inflation pressure. Through the embodiments of the present application, the drying efficiency of the current dryer is reflected by calculating the dew point drop of the gas in the gas tank in real time. If the dew point drop is greater than or equal to the first preset dew point drop, it means that the drying efficiency of the current dryer is relatively high, and the pressure drop can be increased accordingly, that is, the air compressor is started when the air pressure in the gas tank drops to a relatively lower level, thereby avoiding the noise and energy consumption caused by the frequent start of the air compressor. If the dew point drop is less than the first preset dew point drop, it means that the drying efficiency of the current dryer is relatively low, and the pressure drop needs to be reduced accordingly, that is, the air compressor is started when the air pressure in the gas tank drops to a relatively higher level of the preset starting inflation pressure, so as to reduce the excess air volume of the dryer, and more frequently use the dry gas in the gas tank to backflush the dryer after the air compressor is shut down, thereby ensuring the drying effect of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a flow chart of an embodiment of the electric air compressor control method of the present application;

[0035] Figure 2 This is a schematic diagram of the dryer structure of an embodiment of the electric air compressor control method of the present application;

[0036] Figure 3 For this application Figure 1 A detailed flow chart of step S10;

[0037] Figure 4 This is a functional module diagram of an embodiment of the electric air compressor control device of the present application;

[0038] Figure 5 This is a schematic diagram of the hardware structure of the electric air compressor control device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0041] In a first aspect, an embodiment of the present application provides a method for controlling an electric air compressor.

[0042] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of an embodiment of the electric air compressor control method of the present application. Figure 1 As shown, the electric air compressor control method includes:

[0043] Step S10, calculating the dew point drop of the gas in the gas storage tank.

[0044] In this embodiment, refer to Figure 2 , Figure 2 This is a schematic diagram of the dryer structure of an embodiment of the electric air compressor control method of the present application, as shown in Figure 2 As shown in the figure, the dryer is connected to the air compressor and the air storage tank. The air compressed by the air compressor is dried by the mechanical dryer and then stored in the air storage tank. Figure 2 The gas storage cylinder shown in the figure is equipped with a dew point meter to measure the dew point temperature of the gas in the gas storage tank. A temperature sensor can be installed on the chassis near the dryer to measure the ambient temperature. The controller obtains the data of the dew point meter and the temperature sensor, and calculates the dew point drop of the gas in the gas storage tank in real time according to the ambient temperature and the dew point temperature of the gas in the gas storage tank. Among them, the dew point refers to the temperature at which water vapor in the air begins to condense into liquid water under a certain pressure. When the air is cooled to the dew point temperature, the water vapor in the air reaches a saturated state. The dew point drop is the degree to which the dew point temperature of the compressed air after drying is lower than the ambient temperature. The gas in the gas storage tank is stored after the air compressed by the air compressor is dried by the mechanical dryer. The dew point drop of the gas in the gas storage tank reflects the drying efficiency of the dryer.

[0045] Step S20, if the dew point drop is greater than or equal to the first preset dew point drop, control the electric air compressor to start when the air pressure in the air storage tank drops to the first preset air pressure, which is less than the preset starting inflation pressure and greater than the preset safety brake pressure.

[0046] In this embodiment, the dew point drop of the gas in the gas storage tank reflects the drying efficiency of the dryer. The first preset dew point drop can be specifically set according to the drying performance of the dryer. The drying performance of the dryer is determined by factors such as the type and quantity of the adsorbent used in the dryer, and is also related to the air humidity when the dryer is working. If the dew point drop is greater than or equal to the first preset dew point drop (for example, 20°C), it means that the current drying efficiency of the dryer is relatively high, and the pressure drop can be increased accordingly, that is, the air compressor is started when the air pressure in the gas storage tank drops to a relatively lower level, thereby avoiding noise and energy consumption caused by frequent starting of the air compressor. Specifically, the first preset air pressure (e.g., 8 bar) for starting inflation at a relatively lower level can be set with reference to the preset starting inflation pressure (e.g., 9 bar) and the preset safety brake pressure (e.g., 7 bar), and is set to be between the two, so that the braking safety of the vehicle can be ensured at the same time. The preset starting inflation pressure is to fully blow back the dryer to ensure the drying effect of the dryer, and avoid the risk of water ingress and rust of the brake system valves. A relatively small starting inflation pressure is set, and the preset safety brake pressure is set according to regulatory requirements to ensure the safety of the brake system. If the first preset air pressure is less than the preset safety brake pressure, there may be a risk of braking safety. It should be noted that the first preset air pressure should also be reasonably set in combination with the drying performance of the dryer. If it is set too small, the corresponding excess air volume of the dryer will be too large, and the moisture adsorbed by the adsorbent in the dryer may be too much, which may be greater than the moisture that can be taken away by the air tank blowing the dry gas to the dryer after the air compressor is shut down, thereby affecting the drying effect of the dryer, and there is a risk of water ingress and rust of the brake system valves. Among them, the amount of air passing through the dryer = pressure drop * air tank volume + brake air + air used by other systems, and the pressure drop = the stop inflation pressure of the air tank - the start inflation pressure of the air tank.

[0047] Step S30: If the dew point drop is less than the first preset dew point drop, the electric air compressor is controlled to start when the air pressure in the air storage tank drops to a preset starting inflation pressure.

[0048] In this embodiment, if the dew point drop is less than the first preset dew point drop (for example, 20°C), it means that the drying efficiency of the current dryer is low, and the pressure drop needs to be reduced accordingly, that is, the air compressor is started when the air pressure in the air tank drops to a relatively higher preset starting inflation pressure (the dryer access pressure is, for example, 9 bar) to reduce the amount of excess air in the dryer, thereby reducing the amount of moisture adsorbed by the adsorbent in the dryer, so that the dry gas in the air tank is used to backflush the dryer more frequently after the air compressor is shut down to ensure the drying effect of the dryer, thereby avoiding the risk of water ingress and rust on the brake system valves.

[0049] In this embodiment, a dew point meter is installed in the gas tank to measure the dew point temperature of the gas in the gas tank, and a temperature sensor can be installed on the chassis near the dryer to measure the ambient temperature. The controller obtains the data of the dew point meter and the temperature sensor, and calculates the dew point drop of the gas in the gas tank in real time according to the ambient temperature and the dew point temperature of the gas in the gas tank. The dew point drop of the gas in the gas tank reflects the drying efficiency of the dryer. If the dew point drop is greater than or equal to the first preset dew point drop (for example, 20°C), it means that the drying efficiency of the current dryer is relatively high, and the pressure drop can be increased accordingly, that is, the air compressor is started when the air pressure of the gas tank is reduced to a relatively lower level, so as to avoid the noise and energy consumption caused by the frequent start of the air compressor. The first preset air pressure (for example, 8 bar) can be set with reference to the preset start inflation air pressure (for example, 9 bar) and the preset safety brake air pressure (for example, 7 bar), and is set to be between the two, so as to ensure the braking safety of the vehicle at the same time. If the dew point drop is less than the first preset dew point drop (for example, 20°C), it means that the drying efficiency of the current dryer is low, and the pressure drop needs to be reduced accordingly, that is, the air compressor is started when the air pressure in the air tank drops to a relatively higher preset inflation pressure (for example, 9 bar) to reduce the amount of excess air in the dryer, thereby reducing the amount of moisture adsorbed by the adsorbent in the dryer. In this way, the dry gas in the air tank is used to backflush the dryer more frequently after the air compressor is shut down to ensure the drying effect of the dryer, thereby avoiding the risk of water ingress and rust on the brake system valves and other failures.

[0050] In this embodiment, the drying performance of the current dryer is reflected by calculating the dew point drop of the gas in the gas tank in real time, and the pressure drop for controlling the electric air compressor is adjusted only by the drying performance of the dryer. Specifically, the air pressure at the beginning of the inflation of the gas tank for controlling the start of the electric air compressor is adjusted. The control strategy is simple and efficient. The intelligent control effect of the mechanical dryer is achieved only by using a low-cost dew point meter and a temperature sensor, which greatly reduces the cost compared to the electrically controlled dryer. It should be noted that the electrically controlled dryer needs to be equipped with a humidity sensor, and the humidity sensor is used to adjust the backflush amount of the dryer each time. The electrically controlled dryer also has redundant and complex related functions and is costly.

[0051] Further, in one embodiment, referring to Figure 3 , Figure 3 For this application Figure 1 The detailed flow chart of step S10 is as follows: Figure 3 As shown, step S10 includes:

[0052] Step S101, obtaining the ambient temperature and the dew point temperature of the gas in the gas storage tank;

[0053] Step S102, the dew point drop of the gas in the gas storage tank is calculated by subtracting the dew point temperature of the gas in the gas storage tank from the ambient temperature.

[0054] In this embodiment, continue to refer to Figure 2 The dryer connects the air compressor and the gas tank. The air compressed by the air compressor is dried by the mechanical dryer and then stored in the gas tank. A dew point meter is installed in the gas tank to measure the dew point temperature of the gas in the gas tank. A temperature sensor can be installed on the chassis near the dryer to measure the ambient temperature. The controller obtains the data of the dew point meter and the temperature sensor, and uses the ambient temperature to subtract the dew point temperature of the gas in the gas tank to calculate the dew point drop of the gas in the gas tank in real time. Among them, the dew point refers to the temperature at which water vapor in the air begins to condense into liquid water under a certain pressure. When the air is cooled to the dew point temperature, the water vapor in the air reaches a saturated state. The dew point drop is the degree to which the dew point temperature of the compressed air after drying is lower than the ambient temperature. The gas in the gas tank is stored after the air compressed by the air compressor is dried by the mechanical dryer. The dew point drop of the gas in the gas tank reflects the drying efficiency of the dryer.

[0055] Furthermore, in one embodiment, the electric air compressor control method further includes:

[0056] When it is detected that the dew point drop of the gas in the gas storage tank is less than the second preset dew point drop for a duration reaching the first preset time, an early warning of low drying efficiency of the dryer is output, and the second preset dew point drop is less than the first preset dew point drop.

[0057] In this embodiment, when it is detected that the dew point drop of the gas in the gas tank is less than the second preset dew point drop (for example, 15°C) for a duration reaching a first preset duration (for example, 48 hours), an early warning of low drying efficiency of the dryer is output, for example, an early warning prompt "The drying efficiency of the dryer is too low, please replace the drying cylinder" is output; when it is detected that the dew point drop of the gas in the gas tank is greater than or equal to the second preset dew point drop (for example, 15°C), the early warning prompt is cancelled.

[0058] Furthermore, in one embodiment, step S10 further includes:

[0059] When the pressure switch of the dryer is detected to be at a low level, the dew point drop of the gas in the gas storage tank is calculated, wherein when the gas pressure of the gas storage tank is less than or equal to the preset starting inflation pressure, the pressure switch of the dryer outputs a low level;

[0060] The electric air compressor control method also includes:

[0061] When it is detected that the pressure switch of the dryer is at a high level, the electric air compressor is controlled to stop, wherein when the air pressure of the air storage tank is greater than or equal to the preset stop inflation pressure, the pressure switch of the dryer outputs a high level.

[0062] In this embodiment, continue to refer to Figure 2The dryer also includes a pressure switch, which includes two states: high level and low level. When the dryer reaches its cut-off pressure (preset stop inflation pressure), the pressure switch outputs a high level. When the dryer pressure is lower than the access pressure (preset start inflation pressure), the pressure switch outputs a low level. When the pressure switch of the dryer is detected to be at a low level, the dew point drop of the gas in the gas storage tank is calculated, and then the control strategy of the electric air compressor of the present invention is used to control the start of the electric air compressor. Conversely, when the pressure switch of the dryer is detected to be at a high level, the electric air compressor is controlled to stop.

[0063] Furthermore, in one embodiment, the electric air compressor control method further includes:

[0064] When it is detected that the electric air compressor is in the starting state and the duration of the pressure switch of the dryer being at a low level reaches a second preset time, an output pressure switch disconnection or air leakage warning is issued.

[0065] In this embodiment, when it is detected that the electric air compressor is in the startup state and the pressure switch of the dryer is at a low level for a second preset time period (for example, 20 minutes), this means that the electric air compressor has been filling the air tank for a long time in the startup state but still has not filled the air tank. At this time, either the pressure switch is disconnected, and the air pressure actually reaches the inflation stop pressure (i.e., the dryer cut-off pressure, for example, 10 bar), and the pressure switch fails to send a high-level signal to stop the air compressor, or the air tank or the brake system is leaking, and the air pressure has not reached the inflation stop pressure (i.e., the dryer cut-off pressure, for example, 10 bar), and an early warning prompt is output.

[0066] Furthermore, in one embodiment, the electric air compressor control method further includes:

[0067] When it is detected that the air pressure in the air tank is less than the preset safety brake air pressure and the duration of the pressure switch being at a high level reaches a third preset duration, an output pressure switch short circuit or air pressure sensor failure warning is issued.

[0068] In this embodiment, when it is detected that the air pressure of the air storage tank is less than the preset safety brake pressure (for example, 7 bar), the preset safety brake pressure (for example, 7 bar) is less than the first preset pressure (for example, 8 bar) and less than the preset starting inflation pressure (for example, 9 bar), in this case the pressure switch of the dryer should be at a low level to provide a start signal to the electric air compressor, but the pressure switch of the dryer is at a high level. If the duration reaches the third preset time (for example, 5 seconds), either the pressure switch is short-circuited, resulting in abnormal jumping of the pressure switch, or the air pressure sensor fails, and the actual air pressure value of the air storage tank is not less than the preset safety brake pressure (for example, 7 bar), and an early warning prompt is output.

[0069] In a second aspect, an embodiment of the present application also provides an electric air compressor control device.

[0070] In one embodiment, referring to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the electric air compressor control device of the present application, such as Figure 4 As shown, the electric air compressor control device includes:

[0071] A calculation module 10, used to calculate the dew point drop of the gas in the gas storage tank;

[0072] A first control module 20, for controlling the electric air compressor to start when the air pressure of the air storage tank drops to a first preset air pressure if the dew point drop is greater than or equal to a first preset dew point drop, wherein the first preset air pressure is less than a preset starting inflation pressure and greater than a preset safety brake pressure;

[0073] The second control module 30 is used to control the electric air compressor to start when the air pressure in the air storage tank drops to a preset starting inflation pressure if the dew point drop is less than a first preset dew point drop.

[0074] Furthermore, in one embodiment, the calculation module 10 is used to:

[0075] Obtain the ambient temperature and the dew point temperature of the gas in the gas tank;

[0076] The dew point drop of the gas in the gas tank is calculated by subtracting the dew point temperature of the gas in the gas tank from the ambient temperature.

[0077] Furthermore, in one embodiment, the electric air compressor control device further includes a first early warning module, which is used to:

[0078] When it is detected that the dew point drop of the gas in the gas storage tank is less than the second preset dew point drop for a duration reaching the first preset time, an early warning of low drying efficiency of the dryer is output, and the second preset dew point drop is less than the first preset dew point drop.

[0079] Furthermore, in one embodiment, the calculation module 10 is also used for:

[0080] When the pressure switch of the dryer is detected to be at a low level, the dew point drop of the gas in the gas storage tank is calculated, wherein when the gas pressure of the gas storage tank is less than or equal to the preset starting inflation pressure, the pressure switch of the dryer outputs a low level;

[0081] The electric air compressor control device also includes a shutdown control module, which is used to:

[0082] When it is detected that the pressure switch of the dryer is at a high level, the electric air compressor is controlled to stop, wherein when the air pressure of the air storage tank is greater than or equal to the preset stop inflation pressure, the pressure switch of the dryer outputs a high level.

[0083] Furthermore, in one embodiment, the electric air compressor control device further includes a second early warning module, which is used to:

[0084] When it is detected that the electric air compressor is in the starting state and the duration of the pressure switch of the dryer being at a low level reaches a second preset time, an output pressure switch disconnection or air leakage warning is issued.

[0085] Furthermore, in one embodiment, the electric air compressor control device further includes a third early warning module, which is used to:

[0086] When it is detected that the air pressure in the air tank is less than the preset safety brake air pressure and the duration of the pressure switch being at a high level reaches a third preset duration, an output pressure switch short circuit or air pressure sensor failure warning is issued.

[0087] Among them, the functional implementation of each module in the above-mentioned electric air compressor control device corresponds to the various steps in the above-mentioned electric air compressor control method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0088] In a third aspect, an embodiment of the present application provides an electric air compressor control device.

[0089] Reference Figure 5 , Figure 5 Schematic diagram of the hardware structure of the electric air compressor control device involved in the embodiment of the present application. In the embodiment of the present application, the electric air compressor control device may include a processor, a memory, a communication interface and a communication bus.

[0090] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0091] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the electric air compressor control device, and the interface used to realize the interconnection between the electric air compressor control device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0092] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0093] The processor may be a general-purpose processor, which may call the electric air compressor control program stored in the memory and execute the electric air compressor control method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the electric air compressor control program is called may refer to the various embodiments of the electric air compressor control method of the present application, which will not be repeated here.

[0094] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0095] In a fourth aspect, an embodiment of the present application also provides a readable storage medium.

[0096] The readable storage medium of the present application stores an electric air compressor control program, wherein when the electric air compressor control program is executed by a processor, the steps of the electric air compressor control method as described above are implemented.

[0097] Among them, the method implemented when the electric air compressor control program is executed can refer to the various embodiments of the electric air compressor control method of the present application, and will not be repeated here.

[0098] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0099] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0100] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0101] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0102] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0103] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0104] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for controlling an electric air compressor, characterized in that: The electric air compressor control method comprises: Calculate the dew point drop of the gas in the gas tank; If the dew point drop is greater than or equal to a first preset dew point drop, controlling the electric air compressor to start when the air pressure in the air storage tank drops to a first preset air pressure, wherein the first preset air pressure is less than a preset starting inflation pressure and greater than a preset safety brake pressure; If the dew point drop is less than the first preset dew point drop, the electric air compressor is controlled to start when the air pressure in the air storage tank drops to the preset starting inflation pressure.

2. The electric air compressor control method according to claim 1, characterized in that: The calculation of the dew point drop of the gas in the gas storage tank includes: Obtain the ambient temperature and the dew point temperature of the gas in the gas tank; The dew point drop of the gas in the gas tank is calculated by subtracting the dew point temperature of the gas in the gas tank from the ambient temperature.

3. The electric air compressor control method according to claim 1, characterized in that: The electric air compressor control method also includes: When it is detected that the dew point drop of the gas in the gas storage tank is less than the second preset dew point drop for a duration reaching the first preset time, an early warning of low drying efficiency of the dryer is output, and the second preset dew point drop is less than the first preset dew point drop.

4. The electric air compressor control method according to claim 1, characterized in that: The calculation of the dew point drop of the gas in the gas storage tank also includes: When the pressure switch of the dryer is detected to be at a low level, the dew point drop of the gas in the gas storage tank is calculated, wherein when the gas pressure of the gas storage tank is less than or equal to the preset starting inflation pressure, the pressure switch of the dryer outputs a low level; The electric air compressor control method also includes: When it is detected that the pressure switch of the dryer is at a high level, the electric air compressor is controlled to stop, wherein when the air pressure of the air storage tank is greater than or equal to the preset stop inflation pressure, the pressure switch of the dryer outputs a high level.

5. The electric air compressor control method according to claim 4, characterized in that: The electric air compressor control method also includes: When it is detected that the electric air compressor is in the starting state and the duration of the pressure switch of the dryer being at a low level reaches a second preset time, an output pressure switch disconnection or air leakage warning is issued.

6. The electric air compressor control method according to claim 4, characterized in that: The electric air compressor control method also includes: When it is detected that the air pressure in the air tank is less than the preset safety brake air pressure and the duration of the pressure switch being at a high level reaches a third preset duration, an output pressure switch short circuit or air pressure sensor failure warning is issued.

7. An electric air compressor control device, characterized in that: The electric air compressor control device comprises: A calculation module, used to calculate the dew point drop of the gas in the gas storage tank; a first control module, configured to control the electric air compressor to start when the air pressure in the air storage tank drops to a first preset air pressure if the dew point drop is greater than or equal to a first preset dew point drop, wherein the first preset air pressure is less than a preset starting inflation pressure and greater than a preset safety brake pressure; The second control module is used to control the electric air compressor to start when the air pressure in the air storage tank drops to a preset starting inflation pressure if the dew point drop is less than a first preset dew point drop.

8. The electric air compressor control device according to claim 7, characterized in that: The computing module is used for: Obtain the ambient temperature and the dew point temperature of the gas in the gas tank; The dew point drop of the gas in the gas tank is calculated by subtracting the dew point temperature of the gas in the gas tank from the ambient temperature.

9. An electric air compressor control device, characterized in that: The electric air compressor control device includes a processor, a memory, and an electric air compressor control program stored in the memory and executable by the processor, wherein when the electric air compressor control program is executed by the processor, the steps of the electric air compressor control method as described in any one of claims 1 to 6 are implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores an electric air compressor control program, wherein when the electric air compressor control program is executed by a processor, the steps of the electric air compressor control method according to any one of claims 1 to 6 are implemented.

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