Compressed air intelligent control system and control method based on temperature and humidity

Abstract

The invention provides an intelligent compressed air control system and method based on temperature and humidity, and the system comprises a temperature and humidity sensor, an air compressor, a controller, a dryer, and an air storage cylinder. Wherein the temperature and humidity sensor is electrically connected with the controller and used for obtaining the air water content in the current environment, converting the air water content into an electric signal and sending the electric signal to the controller; the air compressor, the dryer and the air storage cylinder are communicated in sequence, and the air compressor is connected with the dryer through a feedback pipeline; the controller is electrically connected with the dryer and used for judging whether the dryer needs to be regenerated or not according to the total water absorption amount of the dryer in the gas pumping period in the current environment and the rated water absorption amount of the dryer and controlling the gas storage cylinder to reversely blow gas to the dryer. Intelligent regeneration of the dryer is achieved, and the effects of saving oil and reducing consumption are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of dryer regeneration, and in particular to a temperature and humidity-based compressed air intelligent control system and control method. Background Art

[0002] The air handling system installed in the vehicle can provide the necessary air for the operation of the whole vehicle. However, in the process of the air handling system providing air for the operation of the whole vehicle, the air compressor compresses the outside air. The compressed air contains different degrees of water vapor, which will corrode the internal pipes and connecting parts of the vehicle. Therefore, the air handling system needs to be equipped with a dryer to absorb the water vapor contained in the gas generated by the compressor. However, after long-term use, the drying capacity of the dryer will gradually decrease until it reaches saturation and the drying performance fails, and the dryer needs to be replaced.

[0003] In the prior art, regeneration technology is used to dry the dryer. The drying principle is to supply dry air to the dryer, and the water vapor in the dryer is blown out by the dry air to restore the drying capacity of the dryer. However, in the prior art, in order to calculate the amount of air required for regeneration, it is necessary to store multiple parameters of the air treatment system, and the calculation process is complicated, which is prone to errors once any changes occur in the vehicle.

[0004] With the development of the contemporary automobile industry, automotive electronic control technology plays an increasingly important role in the vehicle research and development process. If a product wants to stand out among many brands, advanced electronic control technology is essential.

[0005] Commercial vehicles, especially heavy-duty tractor trucks, play a vital role in modern logistics. Due to their large number and high fuel consumption, energy conservation and emission reduction have always been important issues for commercial vehicles. Traditional dryers automatically start the regeneration process every time the cut-off pressure is reached. This process greatly consumes the air pressure of the entire vehicle, requires the long-term operation of the air compressor, increases the fuel consumption of the engine, and the frequent regeneration of the dryer affects its service life. With the increase in usage scenarios, meeting the market's requirements for fuel saving and consumption reduction, improving and upgrading dryers, and using intelligent regeneration system dryers, which consume system compressed air for regeneration only when the dryer cylinder needs to be regenerated, are important measures to meet market needs and achieve fuel saving and increase revenue. Summary of the invention

[0006] The present invention provides a temperature and humidity-based compressed air intelligent control system and control method. Aiming at the problem of frequent and inaccurate regeneration of commercial vehicle dryers, an external controller is used to control the on and off of a solenoid valve to achieve pressure and backblowing control, thereby achieving intelligent regeneration and further achieving the effect of saving fuel and reducing consumption.

[0007] In a first aspect, the present invention provides a compressed air intelligent control system based on temperature and humidity, comprising: a temperature and humidity sensor, an air compressor, a controller, a dryer and an air storage cylinder; wherein: The temperature and humidity sensor is electrically connected to the controller, and is used to obtain the air moisture content in the current environment, and convert the air moisture content into an electrical signal and send it to the controller; The air compressor, the dryer and the air storage cylinder are connected in sequence, and the air compressor and the dryer are also connected through a feedback pipeline; The controller is electrically connected to the dryer, and is used to determine whether the dryer needs to be regenerated based on the total water absorption of the dryer during the pumping cycle under the current environment and the rated water absorption of the dryer, and is used to control the air storage cylinder to back-blow gas to the dryer.

[0008] According to the intelligent compressed air control system based on temperature and humidity provided by the present invention, the air storage cylinder is connected to the dryer via a backflush hose.

[0009] According to the intelligent compressed air control system based on temperature and humidity provided by the present invention, the dryer is provided with an air pressure sensor, and the air pressure sensor is electrically connected to the controller for detecting the air pressure value of the whole vehicle.

[0010] According to the temperature and humidity-based compressed air intelligent control system provided by the present invention, the dryer is also provided with an unloading valve for unloading and a regeneration valve for regenerating the dryer, and the controller is electrically connected to the unloading valve and the regeneration valve, respectively.

[0011] According to the temperature and humidity-based compressed air intelligent control system provided by the present invention, the air outlet of the air compressor is connected to the air inlet of the dryer through an air supply pipe, and the controller is configured to be able to determine the pumping volume of the air compressor in the current pumping cycle, and when the pumping volume is greater than or equal to a preset pumping volume value, determine whether the vehicle air pressure value reaches a target air pressure value that satisfies unloading, and when the vehicle air pressure value is greater than or equal to the target air pressure value, the controller controls the unloading valve to open, and the air compressor stops pumping air.

[0012] According to the temperature and humidity-based compressed air intelligent control system provided by the present invention, the air supply pipe includes: a first air supply section, a second air supply section and a connecting section, one end of the first air supply section is connected to the air compressor, and the other end extends backward, one end of the second air supply section is connected to the dryer, and the other end extends backward from the dryer, and the two ends of the connecting section are respectively connected to the backward extending ends of the first air supply section and the second air supply section.

[0013] In a second aspect, the present invention provides a compressed air intelligent control method, which is applied to the compressed air intelligent control system based on temperature and humidity described in the first aspect, comprising: Determine the current state of the vehicle; Get the air moisture content in the current environment; Compare the total water absorption of the dryer in the current pumping cycle with the rated water absorption of the dryer, and when the total water absorption is not less than the rated water absorption of the dryer, control the gas storage cylinder to back-blow gas to the dryer for regeneration; wherein the rated water absorption of the dryer is the maximum water absorption of the dryer minus the total gas moisture content of a complete pumping from zero to the target air pressure under the current environment.

[0014] According to the temperature and humidity-based dryer regeneration control method provided by the present invention, the determining of the current state of the vehicle includes: When the vehicle is in driving state, obtain the vehicle air pressure value in the current pumping cycle; It is determined whether the vehicle air pressure value is greater than or equal to the target air pressure value that satisfies unloading. When the vehicle air pressure value is greater than or equal to the target air pressure value, the controller controls the unloading valve to open and the air compressor to stop pumping air.

[0015] According to the temperature and humidity-based dryer regeneration control method provided by the present invention, the determining of the current state of the vehicle includes: When the vehicle is in a parking state, there is no need to compare the vehicle air pressure value with the target air pressure value that satisfies the unloading condition.

[0016] According to the temperature and humidity-based dryer regeneration control method provided by the present invention, the total water absorption of the dryer in the current pumping cycle is compared with the rated water absorption of the dryer, and when the total water absorption is not less than the rated water absorption of the dryer, the air storage cylinder is controlled to blow gas back to the dryer for regeneration, and then the method further includes: When the vehicle air pressure value is less than or equal to the vehicle cut-in pressure, the dryer is controlled to stop backflush regeneration.

[0017] The present invention provides a temperature and humidity-based compressed air intelligent control system, comprising: a temperature and humidity sensor, an air compressor, a controller, a dryer and an air storage cylinder. The present invention collects environmental temperature and humidity information by using a temperature and humidity sensor, and compares the total water absorption of the dryer in the current pumping cycle with the rated water absorption of the dryer through the controller to determine whether to issue a regeneration instruction, so that the dryer regeneration is accurately controlled by the controller according to the temperature and humidity sensor, thereby more effectively extending the service life of the brake system and reducing the fuel consumption of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a compressed air intelligent control system based on temperature and humidity provided in an embodiment of the present invention.

[0020] Figure 2 It is a structural block diagram of a compressed air intelligent control system based on temperature and humidity provided in an embodiment of the present invention.

[0021] Reference numerals: 1. Temperature and humidity sensor; 2. Air compressor; 3. Controller; 4. Dryer; 5. Air storage cylinder; 6. Feedback pipeline; 7. Backflush hose; 8. Air supply pipe; 81. First air supply section; 82. Second air supply section; 83. Connecting section; 9. Air pressure sensor; 10. Unloading valve; 11. Regeneration valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 2 The present invention describes a compressed air intelligent control system and control method based on temperature and humidity.

[0024] The present embodiment provides a compressed air intelligent control system based on temperature and humidity, comprising: a temperature and humidity sensor 1, an air compressor 2, a controller 3, a dryer 4 and an air cylinder 5; wherein the controller 3 may be a PCU controller 3, the air compressor 2 is arranged in the engine of the vehicle, the engine may drive the air compressor 2 to operate through a transmission shaft, so that the air compressor 2 compresses the gas, and the compressed gas enters the air cylinder 5 after being dehumidified and degreased by the dryer 4, and is inflated, thereby realizing the gas storage function of the air cylinder 5 and the regeneration function of the dryer 4, and is ready for use when the vehicle is braked.

[0025] Specifically, the temperature and humidity sensor 1 is electrically connected to the controller 3, and is used to obtain the moisture content of the air in the current environment, and convert the moisture content of the air into an electrical signal and send it to the controller 3; the air compressor 2, the dryer 4 and the air storage cylinder 5 are connected in sequence, the air storage cylinder 5 and the dryer 4 are connected through a backflush hose 7, and the air compressor 2 and the dryer 4 are also connected through a feedback pipeline 6; for example, the air compressor 2 can be a clutch air compressor 2, and the dryer 4 can feed back the whole vehicle air pressure to the air compressor 2 through the feedback pipeline 6. When the whole vehicle air pressure reaches the unloading air pressure, the dryer 4 feeds back the air pressure to the air compressor 2, and the air compressor 2 is clutched and disconnected to stop pumping air.

[0026] Among them, the controller 3 is electrically connected to the dryer 4, and is used to determine whether the dryer 4 needs to be regenerated based on the total water absorption of the dryer 4 during the pumping cycle under the current environment and the rated water absorption of the dryer 4, and is used to control the air storage cylinder 5 to back-blow gas to the dryer 4.

[0027] The rated water absorption capacity of the dryer 4 is the maximum water absorption capacity of the dryer 4 minus the total gas moisture content of a complete pumping from zero to the target air pressure under the current air environment.

[0028] In this embodiment, the dryer 4 is provided with an air pressure sensor 9, and the air pressure sensor 9 is electrically connected to the controller 3 for detecting the air pressure value of the whole vehicle.

[0029] Furthermore, the dryer 4 is also provided with an unloading valve 10 for unloading and a regeneration valve 11 for regenerating the dryer 4. The controller 3 is electrically connected to the unloading valve 10 and the regeneration valve 11, respectively, and the controller 3 is configured to determine the pumping volume of the air compressor 2 in the current pumping cycle, and when the pumping volume is greater than or equal to a preset pumping volume value, determine whether the vehicle air pressure value reaches a target air pressure value that satisfies the unloading, and when the vehicle air pressure value is greater than or equal to the target air pressure value, the controller 3 controls the unloading valve 10 to open. At the same time, the air compressor 2 stops pumping air; for example, the unloading valve 10 and the regeneration valve 11 are both solenoid valves, which are arranged in the dryer 4. When the unloading valve 10 is opened, the air compressor 2 stops pumping air, and the regeneration valve 11 is used to regenerate the desiccant in the dryer 4. When the regeneration valve 11 is opened, the gas in the air storage cylinder 5 is blown to the dryer 4 through the feedback pipeline 6, taking away the moisture in the desiccant and discharging it to the outside; the controller 3 is electrically connected to the air pressure sensor 9, the unloading valve 10 and the regeneration valve 11 on the dryer 4 through the CAN line.

[0030] The controller 3 in this embodiment is electrically connected to the temperature and humidity sensor 1 and the unloading valve 10, regeneration valve 11 and air pressure sensor 9 inside the air dryer 4. The temperature and humidity sensor 1 and the air pressure sensor 9 respectively convert the air moisture content and air pressure information into electrical signals to communicate with the controller 3. The controller 3 controls the unloading valve 10 and the regeneration valve 11 by receiving and transmitting the electrical signals, thereby achieving dry regeneration of the dryer 4 and normal braking of the vehicle.

[0031] In some embodiments, the air outlet of the air compressor 2 is connected to the air inlet of the dryer 4 through the air supply pipe 8. Figure 1 As shown, the air supply pipe 8 includes: a first air supply section 81, a second air supply section 82 and a connecting section 83. The dryer 4 is arranged in front of the air compressor 2. One end of the first air supply section 81 is connected to the air compressor 2, and the other end extends backward. One end of the second air supply section 82 is connected to the dryer 4, and the other end extends backward from the dryer 4. The two ends of the connecting section 83 are respectively connected to the backward extending ends of the first air supply section 81 and the second air supply section 82.

[0032] Optionally, the first air supply section 81 and the second air supply section 82 are both configured as steel pipes, and the connecting section 83 is a corrugated tube, which includes a hose and a braided layer arranged outside the hose, wherein the hose can be a rubber hose and the braided layer can be a metal braided layer. With such a configuration, the hose makes the connecting section 83 have a certain degree of softness, and can be bent and deformed so as to better connect with the rear ends of the first air supply section 81 and the second air supply section 82, and the braided layer can protect the hose, so that the connecting section 83 can withstand high-pressure gas, prevent air leakage at the connecting section 83, and improve the reliability of the air supply pipe 8.

[0033] like Figure 1 As shown, when the air compressor 2 pumps air into the air cylinder 5, the air flow will first flow from front to back along the extension direction of the first air supply section 81, change the flow direction when passing through the connecting section 83, and then flow from back to front along the extension direction of the second air supply section 82, and after being dried by the dryer 4, enter the air cylinder 5.

[0034] The regeneration and pressure relief processes of the dryer 4 of the present invention are accurately controlled by the controller 3 based on the temperature and humidity sensor 1 and the pressure sensor, and the controller 3 controls the on and off of the solenoid valve to achieve pressure and backblowing control, thereby realizing intelligent regeneration and further achieving the effect of saving fuel and reducing consumption, thereby more effectively extending the service life of the braking system and reducing the fuel consumption of the entire vehicle.

[0035] The embodiment of the present invention further provides a dryer regeneration control method, comprising: Step S1: Determine the current state of the vehicle; Step S2: Obtain the air moisture content in the current environment.

[0036] Step S3: Compare the total water absorption of the dryer 4 in the current pumping cycle with the rated water absorption of the dryer 4, and when the total water absorption is not less than the rated water absorption of the dryer 4, control the air storage cylinder 5 to back-blow gas to the dryer 4 for regeneration; wherein the rated water absorption of the dryer 4 is the maximum water absorption of the dryer 4 minus the total gas water content of a complete pumping from zero to the target pressure value under the current environment.

[0037] That is to say, the controller 3 compares the total water absorption of the dryer 4 in the current pumping cycle with the rated water absorption of the dryer 4. If the total water absorption of the dryer 4 in the current pumping cycle is less than the rated water absorption of the dryer 4, it means that the dryer 4 still has sufficient water absorption capacity and does not need to be regenerated immediately; if the total water absorption is equal to or greater than the rated water absorption of the dryer 4, it means that the dryer 4 has approached or reached its water absorption limit and needs to be regenerated to restore its water absorption capacity.

[0038] Specifically, the moisture content of the air in the current environment is detected by the temperature and humidity sensor 1, and converted into an electrical signal and sent to the controller 3; the controller 3 compares the total water absorption of the dryer 4 in the current pumping cycle with the rated water absorption of the dryer 4, and when the total water absorption is not less than the rated water absorption of the dryer 4, controls the regeneration valve 11 to open, so that the air storage cylinder 5 blows gas back to the dryer 4 for regeneration.

[0039] Here, the total water absorption of the dryer 4 in the current pumping cycle is obtained by the controller 3. The pumping cycle refers to the time period between two adjacent regeneration processes of the dryer 4. The controller 3 performs calculus on the total pumping volume, air compression ratio, and unit air moisture content calculated from the real-time temperature and humidity data detected by the temperature and humidity sensor 1 during this pumping process (excluding the intermediate pumping process) from the end of the last regeneration to the end of the pumping process, to obtain the total water absorption of the air dryer 4 after the last regeneration of the air dryer 4, so as to judge the moisture and oil content of the desiccant in the dryer 4, and further provide an operational basis for whether to start the regeneration.

[0040] In this embodiment, step S1 includes: when the vehicle is in a driving state, obtaining the vehicle air pressure value in the current pumping cycle; judging whether the vehicle air pressure value is greater than or equal to the target air pressure value that satisfies unloading, and when the vehicle air pressure value is greater than or equal to the target air pressure value, the controller 3 controls the unloading valve 10 to open, and the air compressor 2 stops pumping air.

[0041] That is to say, under normal driving conditions, when the air pressure in the air storage cylinder 5 rises to the target air pressure value, the unloading valve 10 is controlled to open, the air compressor 2 stops pumping air, and the regeneration valve 11 is controlled to open to start backwash regeneration; and during driving, the priority of pumping air is higher than the priority of regeneration, that is, the air pressure is first guaranteed to meet the needs of normal driving of the vehicle, and secondly, the regeneration conditions of the dryer 4 are considered, so as to more effectively ensure the efficiency and safety of the braking system of the vehicle during transportation, and ensure the rapid response and precise execution of the braking system.

[0042] In this embodiment, step S1 further includes: when the vehicle is in a parking state, there is no need to compare the vehicle air pressure value with the target air pressure value that satisfies the unloading condition.

[0043] That is to say, when the vehicle is in the parking state, the controller 3 only needs to determine whether to regenerate the dryer 4 based on the total water absorption of the dryer 4 in the current pumping cycle and the rated water absorption of the dryer 4.

[0044] In this embodiment, after step S3, the following step further includes: when the vehicle air pressure value is less than or equal to the vehicle cut-in pressure, controlling the dryer 4 to stop back-blowing regeneration.

[0045] Specifically, the vehicle cut-in pressure here refers to the minimum pressure value in the air reservoir 5 to maintain effective braking of the vehicle brake mechanism. As the back-blowing regeneration of the dryer 4 proceeds, the air pressure in the air reservoir 5 gradually decreases, and the air flow rate also gradually decreases. When the controller 3 determines that the actual air pressure value in the air reservoir 5 is reduced to the vehicle cut-in pressure, the unloading valve 1032 and the regeneration valve 1133 are controlled to close, and the back-blowing regeneration stops. In this way, it can be ensured that the gas pressure in the air reservoir 5 is sufficient to achieve reliable braking of the vehicle, thereby improving the driving safety of the vehicle.

[0046] In this way, by setting the regeneration control logic to control the regeneration stop according to the vehicle state, the regeneration control of the vehicle dryer 4 is made more intelligent, which is conducive to further improving the energy saving and consumption reduction effect.

[0047] In a further embodiment, step S3 also includes: the controller 3 calculates the remaining pumping volume of the air cylinder 5 after backwash regeneration in the current pumping cycle, and uses the remaining pumping volume as part of the first pumping volume in the next pumping cycle. The remaining pumping volume can be the preset pumping volume minus the amount of gas consumed in the backwash regeneration process.

[0048] When the regeneration program is started, the unloading valve 10 and the regeneration valve 11 of the dryer 4 can be controlled to open. At this time, the air compressor 2 stops pumping air, and the gas in the air cylinder 5 can be blown back into the air cylinder 5 through the blowback hose 7 and the regeneration valve 11. The blowback gas takes away the moisture in the desiccant in the dryer 4 and discharges it to the outside until the desiccant completely removes the moisture. After the regeneration of the current pumping cycle is completed, the air compressor 2, the dryer 4, etc. enter the operation process of the next pumping cycle; during the regeneration process, the controller 3 can calculate and determine the remaining pumping volume of the air cylinder 5 after the blowback regeneration in the current pumping cycle, and use the remaining pumping volume as part of the preset pumping volume in the next pumping cycle. The remaining pumping volume can be the preset pumping volume minus the gas consumed in the blowback regeneration process.

[0049] Such an arrangement ensures that the dryer 4 can realize the intelligent and automated regeneration process and extend its service life. Compared with the traditional dryer 4 which needs to reach the cut-off pressure each time to start the regeneration process, consumes the entire vehicle air pressure, and requires the air compressor 2 to work for a long time, the dryer regeneration control method of the present invention can enable the vehicle to achieve the effect of saving fuel and reducing consumption.

[0050] For example, taking the preset pumping volume of 100L as an example, the regeneration process in the current pumping cycle consumes 20L of gas, and the remaining pumping volume in the air storage cylinder 54 is 80L. At this time, 80L is used as the starting calculation value of the preset pumping volume in the next pumping cycle, and the preset pumping volume in the next pumping cycle is accumulated from 80L. In this way, it can be prevented that when the unloading pressure has been reached but the preset pumping volume has not been reached in the next pumping cycle, the air compressor 2 is not controlled in time to stop pumping, causing damage to the vehicle.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compressed air intelligent control system based on temperature and humidity, characterized in that: include: A temperature and humidity sensor (1), an air compressor (2), a controller (3), a dryer (4) and an air storage cylinder (5); wherein: The temperature and humidity sensor (1) is electrically connected to the controller (3) and is used to obtain the air moisture content in the current environment and convert the air moisture content into an electrical signal and send it to the controller (3); The air compressor (2), the dryer (4) and the air storage cylinder (5) are connected in sequence, and the air compressor (2) and the dryer (4) are also connected via a feedback pipeline (6); The controller (3) is electrically connected to the dryer (4) and is used to determine whether the dryer (4) needs to be regenerated based on the total water absorption of the dryer (4) during a pumping cycle under current conditions and the rated water absorption of the dryer (4), and is used to control the gas storage cylinder (5) to back-blow gas into the dryer (4).

2. The intelligent compressed air control system based on temperature and humidity according to claim 1 is characterized in that: The dryer (4) is provided with an air pressure sensor (9), and the air pressure sensor (9) is electrically connected to the controller (3) and is used to detect the air pressure value of the entire vehicle.

3. The intelligent compressed air control system based on temperature and humidity according to claim 2 is characterized in that: The dryer (4) is also provided with an unloading valve (10) for unloading and a regeneration valve (11) for regenerating the dryer (4), and the controller (3) is electrically connected to the unloading valve (10) and the regeneration valve (11), respectively; and the controller (3) is configured to be able to determine the pumping volume of the air compressor (2) in a current pumping cycle, and when the pumping volume is greater than or equal to a preset pumping volume value, determine whether the vehicle air pressure value reaches a target air pressure value that satisfies unloading, and when the vehicle air pressure value is greater than or equal to the target air pressure value, the controller (3) controls the unloading valve (10) to open, and at the same time the air compressor (2) stops pumping air.

4. The intelligent compressed air control system based on temperature and humidity according to claim 1 is characterized in that: The air outlet of the air compressor (2) is connected to the air inlet of the dryer (4) via an air supply pipe (8).

5. The intelligent compressed air control system based on temperature and humidity according to claim 4 is characterized in that: The air supply pipe (8) comprises: a first air supply section (81), a second air supply section (82) and a connecting section (83); one end of the first air supply section (81) is connected to the air compressor (2), and the other end extends backwards; one end of the second air supply section (82) is connected to the dryer (4), and the other end extends backwards from the dryer (4); two ends of the connecting section (83) are respectively connected to the rearward extending ends of the first air supply section (81) and the second air supply section (82).

6. The intelligent compressed air control system based on temperature and humidity according to claim 1 is characterized in that: The air storage cylinder (5) is connected to the dryer (4) via a backflush hose (7).

7. A compressed air intelligent control method, applied to the compressed air intelligent control system based on temperature and humidity according to any one of claims 1 to 6, characterized in that: include: Determine the current state of the vehicle; Get the air moisture content in the current environment; The total water absorption of the dryer (4) in the current pumping cycle is compared with the rated water absorption of the dryer (4), and when the total water absorption is not less than the rated water absorption of the dryer (4), the air storage cylinder (5) is controlled to blow gas back to the dryer (4) for regeneration; wherein the rated water absorption of the dryer (4) is the maximum water absorption of the dryer (4) minus the total gas water content of a complete pumping from zero to a target pressure value under the current environment.

8. The intelligent compressed air control method according to claim 7, characterized in that: The determining of the current state of the vehicle includes: When the vehicle is in driving state, obtain the vehicle air pressure value in the current pumping cycle; It is determined whether the vehicle air pressure value is greater than or equal to a target air pressure value that satisfies unloading. When the vehicle air pressure value is greater than or equal to the target air pressure value, the controller (3) controls the unloading valve (10) to open and the air compressor (2) to stop pumping air.

9. The intelligent compressed air control method according to claim 7, characterized in that: The determining of the current state of the vehicle includes: When the vehicle is in a parking state, there is no need to compare the vehicle air pressure value with the target air pressure value that satisfies the unloading condition.

10. The intelligent compressed air control method according to claim 7, characterized in that: The method further comprises comparing the total water absorption of the dryer (4) in the current pumping cycle with the rated water absorption of the dryer (4), and when the total water absorption is not less than the rated water absorption of the dryer (4), controlling the air storage cylinder (5) to blow gas back to the dryer (4) for regeneration, and then further comprising: When the vehicle air pressure value is less than or equal to the vehicle cut-in pressure, the dryer (4) is controlled to stop backflush regeneration.

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