A vehicle washing system and method of washing

Abstract

The application discloses a vehicle cleaning system and a cleaning method. The vehicle cleaning system comprises a common rail module, a liquid storage tank, a nozzle, a pressure accumulator, a first pressure detection component, a power component and a control module. The common rail module is internally provided with a common rail cavity. The pressure accumulator is provided with a pressure accumulation cavity. The power component is used for transporting liquid in the liquid storage cavity to the pressure accumulation cavity. The liquid supply port of the pressure accumulation cavity is in communication with the liquid inlet path. The output end of the control module is electrically connected with the power component and the output control sub-module. The control module is used for acquiring cavity pressure information, controlling the working state of the power component based on the cavity pressure information and a preset cavity pressure, until the cavity pressure information is the preset cavity pressure, and controlling the output control sub-module to turn on the output path to make the nozzle to output liquid to clean the parts to be cleaned when the cavity pressure information is the preset cavity pressure. Through the above scheme, the problem that the cleaning effect is affected due to the instantaneous drop of the spray cleaning pressure when the existing cleaning system outputs liquid is solved.

Description

Technical Field

[0001] This invention relates to the technical field of cleaning systems, and more particularly to a vehicle cleaning system and cleaning method. Background Technology

[0002] With the increasing development of the intelligent driving industry and the growing demand for driving safety, it is necessary to clean some parts of the vehicle to prevent dirt from affecting driving safety. These include cameras, radar, front wipers, and rear wipers. If these parts are dirty, they will affect driving. Therefore, vehicles need to be equipped with cleaning systems for cleaning.

[0003] Chinese patent CN114798592A discloses a vehicle environmental sensing component cleaning system, method, and vehicle, such as... Figure 1 As shown, the vehicle environmental sensing component cleaning system includes a common rail module 1, nozzles 2, an air supply module 3, a liquid supply module 4, and a control module 5. The common rail module 1 has a common rail cavity with a liquid inlet path 11, an air inlet path 12, an air outlet path 13, and a liquid outlet path 14. The liquid supply module 4 is connected to the liquid inlet path 11, and the air supply module 3 is connected to the air inlet path 12. The common rail module 1 includes a switch submodule 15, which controls the liquid inlet, air inlet, liquid outlet, and air outlet of the liquid inlet path 11, air inlet path 12, air outlet path 13, and liquid outlet path 14. The control module 5 is electrically connected to the switch submodule 15, the liquid supply module 4, and the air supply module 3, and controls the switching of the common rail cavity between liquid storage and gas storage. Both the air outlet path 13 and the liquid outlet path 14 are connected to the nozzles 2, which sequentially spray the liquid and gas from the common rail cavity to the environmental sensing component for cleaning. The liquid outlet path 14 includes multiple liquid outlet branches 141, and the number of nozzles 2 is multiple.

[0004] Regarding the above solution, since the common rail chamber has a small volume, when multiple nozzles 2 discharge liquid at the same time, the output liquid volume is much greater than the liquid volume stored in the common rail chamber, which will cause the spray pressure to drop instantly, thus affecting the cleaning effect. Summary of the Invention

[0005] This invention provides a vehicle cleaning system and cleaning method to solve the problem that the cleaning effect is affected by the instantaneous drop in spray pressure when the liquid is discharged in existing cleaning systems.

[0006] According to one aspect of the present invention, a vehicle cleaning system is provided for cleaning components of a vehicle. The vehicle cleaning system includes a common rail module, a liquid storage tank, and nozzles. The common rail module has a common rail cavity, which includes an inlet path and an outlet path. The outlet path is connected to the nozzles. The liquid storage tank has a storage chamber for storing liquid. The common rail module further includes an input control submodule and an output control submodule. The input control submodule controls the opening and closing of the inlet path. Multiple output paths and multiple output control submodules are provided, and each of the multiple output control submodules controls the opening and closing of multiple output paths in a one-to-one correspondence. The vehicle cleaning system also includes a pressure accumulator, a first pressure detection element, a power element, and a control module.

[0007] The accumulator has an accumulator chamber, and the power unit has a liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid storage chamber, and the liquid outlet is connected to the accumulator chamber. The power unit is used to transport the liquid in the liquid storage chamber to the accumulator chamber.

[0008] The accumulator chamber has a liquid supply port, which is connected to the liquid inlet path;

[0009] The first pressure detection element is used to detect the pressure in the common rail cavity to obtain the cavity pressure information;

[0010] The input terminal of the control module is electrically connected to the first pressure detection element, and the output terminal of the control module is electrically connected to both the power element and the output control submodule. The control module is used to acquire the intracavitary pressure information, control the working state of the power element based on the intracavitary pressure information and a preset intracavitary pressure, until the intracavitary pressure information is the preset intracavitary pressure, and control the output control submodule to open the output path when the intracavitary pressure information is the preset intracavitary pressure so that the nozzle outputs liquid to clean the component to be cleaned.

[0011] In an optional embodiment of the present invention, the accumulator is disposed on the liquid storage tank;

[0012] And / or, the power component is an electric pump.

[0013] In an optional embodiment of the present invention, the volume of the accumulator chamber is determined by the following formula:

[0014]

[0015] Wherein, ΔV = the volume of liquid discharged or stored in the accumulator per second (L / s), P0 is the pre-charge medium pressure, P1 is the minimum working pressure of the accumulator, P2 is the maximum working pressure of the accumulator, and n is a variable exponent.

[0016] In an optional embodiment of the present invention, the common rail module further includes a pressure relief unit, the common rail cavity has a reflux outlet, the liquid storage tank has a reflux inlet, a reflux pipeline is provided between the reflux outlet and the reflux inlet and is connected through the reflux pipeline, and the pressure relief unit is used to control the opening and closing of the reflux pipeline;

[0017] And / or, the liquid storage cavity is provided with a liquid level detection device, which is used to detect the liquid level information of the liquid storage cavity;

[0018] And / or, the vehicle cleaning system further includes an air supply module, and the common rail cavity further includes an air intake path; the air supply module is connected to the air intake path, the input control submodule is also used to control the opening and closing of the air intake path, and the control module is used to control the input control submodule, the output control submodule, the power component and the air supply module to switch the common rail cavity between liquid storage and gas storage.

[0019] In an optional embodiment of the present invention, the vehicle includes a vehicle controller, the common rail module further includes a communication module, the control module is electrically connected to the communication module, and the control module communicates with the vehicle controller through the communication module;

[0020] And / or, the vehicle washing system further includes a heating module for heating the parts to be washed;

[0021] And / or, the vehicle washing system further includes a rainfall detection element for detecting rainfall outside the vehicle to obtain rainfall information.

[0022] According to another aspect of the present invention, a vehicle is provided, the vehicle including a vehicle body, on which components to be cleaned are provided and a vehicle cleaning system as described in any embodiment of the present invention.

[0023] According to another aspect of the present invention, a vehicle washing method is provided, which is applied to the vehicle washing system described in any embodiment of the present invention, the vehicle washing method comprising:

[0024] Obtain a cleaning instruction, the cleaning instruction including a liquid washing instruction;

[0025] Based on the liquid wash command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid;

[0026] Determine whether the common rail chamber and the accumulator chamber are filled with liquid;

[0027] If the common rail chamber and the accumulator chamber are filled with liquid, the pressure information inside the chamber is obtained, and the working state of the power component is controlled based on the pressure information inside the chamber and the preset pressure inside the chamber until the pressure information inside the chamber is the preset pressure inside the chamber. When the pressure information inside the chamber is the preset pressure inside the chamber, the output control submodule is turned on to enable the nozzle to discharge liquid to clean the component to be cleaned.

[0028] In an optional embodiment of the present invention, controlling the working state of the power component based on the intracavity pressure information and a preset intracavity pressure until the intracavity pressure information is the preset intracavity pressure includes:

[0029] Compare the intracavitary pressure information with the preset intracavitary pressure;

[0030] If the intracavitary pressure information is greater than the preset intracavitary pressure, the power component is controlled to reduce its rotation speed and the step of comparing the intracavitary pressure information with the preset intracavitary pressure is continued until the intracavitary pressure information is the preset intracavitary pressure.

[0031] If the intracavitary pressure information is less than the preset intracavitary pressure, the power component is controlled to increase its rotational speed and continue to perform the step of comparing the intracavitary pressure information with the preset intracavitary pressure until the intracavitary pressure information is the preset intracavitary pressure.

[0032] In an optional embodiment of the present invention, before determining whether the common rail cavity and the accumulator cavity are filled with liquid, the method further includes:

[0033] Obtain the liquid level information of the storage tank detected by the liquid level detection device;

[0034] Accordingly, determining whether the common rail chamber and the accumulator chamber are filled with liquid includes:

[0035] The amount of liquid reduction in the storage chamber is determined based on the liquid level information;

[0036] Determine whether the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber;

[0037] If the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber, then the common rail chamber and the accumulator chamber are determined to be filled with liquid.

[0038] If the amount of liquid reduction is not greater than the sum of the volumes of the common rail cavity and the accumulator cavity, it is determined that the common rail cavity and the accumulator cavity are not filled with liquid;

[0039] After determining that the common rail chamber and the accumulator chamber are filled with liquid, the method further includes: controlling the pressure relief unit to close the return pipeline.

[0040] In an optional embodiment of the present invention, the cleaning command further includes an air washing command, and after obtaining the cleaning command, the method further includes:

[0041] Based on the gas washing command control input control submodule and the air supply module, the common rail cavity starts to intake air through the air intake path;

[0042] Determine whether the common rail chamber and the accumulator chamber are filled with gas;

[0043] If the common rail chamber and the accumulator chamber are filled with gas, the pressure relief unit is controlled to close the return pipeline, and the output control submodule is controlled to open the output path so that the nozzle can release gas to clean the component to be cleaned.

[0044] In an optional embodiment of the present invention, before determining whether the common rail cavity and the accumulator cavity are filled with gas, the method further includes:

[0045] Obtain the liquid level information of the storage tank detected by the liquid level detection device;

[0046] Accordingly, determining whether the common rail cavity and the accumulator cavity are filled with gas includes:

[0047] The amount of liquid added to the storage chamber is determined based on the liquid level information;

[0048] Determine whether the increase in liquid volume is greater than the sum of the volumes of the accumulator chamber and the common rail chamber;

[0049] If the increase in liquid level is greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are filled with gas;

[0050] If the increase in liquid level is not greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are not filled with gas.

[0051] In an optional embodiment of the present invention, the vehicle cleaning method further includes:

[0052] Obtain vehicle status signals sent by the vehicle controller;

[0053] The cleaning plan is determined based on the vehicle status signal.

[0054] In an optional embodiment of the present invention, the component to be cleaned includes at least one of a rearview camera and a rear-side radar, the vehicle status signal includes a vehicle driving signal, and the step of determining a cleaning scheme based on the vehicle status signal includes:

[0055] Determine whether the vehicle is reversing based on the vehicle driving signal;

[0056] If it is determined that the vehicle is reversing, the cleaning command is output to control the output control submodule corresponding to the rearview camera and / or the rear radar to turn on the corresponding output path to clean the rearview camera and the rear radar.

[0057] In an optional embodiment of the present invention, the component to be cleaned includes at least one of a side camera, a side radar, a side-view camera, and a side radar; the vehicle status signal further includes a vehicle speed signal; and the step of determining a cleaning scheme based on the vehicle status signal includes:

[0058] Determine whether the vehicle is moving forward based on the vehicle driving signal;

[0059] If the vehicle is moving forward, determine whether the vehicle speed is greater than a preset speed threshold based on the vehicle speed signal;

[0060] If the vehicle speed is greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar;

[0061] If the vehicle speed is not greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar.

[0062] In an optional embodiment of the present invention, the component to be cleaned further includes a main cleaning component and a secondary cleaning component; the vehicle cleaning method further includes:

[0063] Based on the liquid level information, determine whether the water volume in the storage chamber is sufficient;

[0064] If the water volume in the storage chamber is insufficient, the air washing command is output to control the output path corresponding to the secondary cleaning component to output air for pneumatic cleaning of the secondary cleaning component. Then, the liquid washing command is output to control the output path corresponding to the main cleaning component to output liquid for water washing of the main cleaning component. Finally, the air washing command is output to control the output path corresponding to the main cleaning component to output air for pneumatic cleaning of the main cleaning component.

[0065] In an optional embodiment of the present invention, the vehicle cleaning method further includes:

[0066] Determine the current road surface information;

[0067] A cleaning plan is determined based on the current road surface information.

[0068] In an optional embodiment of the present invention, determining the cleaning scheme based on the current road surface information includes:

[0069] Determine whether the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section;

[0070] If the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section, the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned. The sensing information of the component to be cleaned is acquired in real time, and based on the sensing information, it is determined whether the component to be cleaned meets the second preset dirt standard. If the component to be cleaned meets the second preset dirt standard, the liquid washing command is first output to control the output path corresponding to the component to be cleaned to output liquid to perform water washing of the component to be cleaned, and then the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned.

[0071] In an optional embodiment of the present invention, determining the cleaning scheme based on the current road surface information includes:

[0072] Determine whether the current road surface information indicates a muddy section;

[0073] If the current road surface information is a muddy section, the sensing information of the component to be cleaned is acquired in real time. Based on the sensing information, it is determined whether the component to be cleaned meets the first preset dirt standard. If the component to be cleaned meets the first preset dirt standard, the current cleaning pressure is reduced from the standard cleaning pressure to the first cleaning pressure, the current cleaning time is reduced from the standard cleaning time to the first cleaning time, and the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time. If the component to be cleaned does not meet the first preset dirt standard, it is determined in real time whether the current road surface information is not a muddy section. If the current road surface information is not a muddy section, the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the standard cleaning time and the standard cleaning pressure.

[0074] In an optional embodiment of the present invention, after controlling the output control submodule to turn on the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time, the method further includes:

[0075] Determine whether the component to be cleaned meets the first preset dirt standard again within a first preset time period;

[0076] If the component to be cleaned again meets the first preset dirt standard within a first preset time, a manual cleaning prompt is output, and it is determined in real time whether feedback information from the user based on the manual cleaning prompt is obtained within a second preset time. If no feedback information from the user based on the manual cleaning prompt is obtained within the second preset time, a cleaning command is output to control the output control submodule to conduct the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time, executing the steps of outputting the manual cleaning prompt and determining in real time whether feedback information from the user based on the manual cleaning prompt is obtained within the second preset time.

[0077] In an optional embodiment of the present invention, determining the current road surface information includes:

[0078] Establish a road condition image recognition algorithm model;

[0079] Obtain current road surface image information;

[0080] The current road surface information is determined based on the current road surface image information and the road condition image recognition algorithm model.

[0081] In an optional embodiment of the present invention, establishing the road condition image recognition algorithm model includes:

[0082] Collect standard images of different road surfaces;

[0083] Training parameters are obtained by training the model on the standard images of different road surfaces;

[0084] A road condition image recognition algorithm model is constructed based on the training parameters.

[0085] In an optional embodiment of the present invention, before the step of controlling the output control submodule to turn on the output path to allow the nozzle to discharge liquid to clean the component to be cleaned when the intracavitary pressure information is the preset intracavitary pressure, the method further includes:

[0086] Get the current outside temperature;

[0087] Determine whether the current outside temperature is lower than a preset temperature threshold;

[0088] If the current outside temperature is lower than the preset temperature threshold, the heating module is activated to heat the parts to be cleaned.

[0089] In an optional embodiment of the present invention, the vehicle cleaning method further includes:

[0090] Acquire rainfall information obtained from rainfall measurement devices;

[0091] Determine whether it is a rainy day based on the rainfall information;

[0092] If it is a rainy day, determine whether the component to be cleaned is blocked by an obstruction. If the component to be cleaned is blocked by an obstruction, output the air cleaning command to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned, and determine in real time whether the cleaning effect of the component to be cleaned meets the preset cleaning effect. If the cleaning effect of the component to be cleaned does not meet the preset cleaning effect, output the liquid cleaning command to control the output path corresponding to the component to be cleaned to output liquid first to perform water washing of the component to be cleaned.

[0093] The technical solution of this invention, by setting up a pressure accumulator and a first pressure detection element, allows the control module to acquire the intracavitary pressure information detected by the first pressure detection element. Based on the intracavitary pressure information and a preset intracavitary pressure, the control module controls the working state of the power component until the intracavitary pressure information reaches the preset intracavitary pressure. When the intracavitary pressure information reaches the preset intracavitary pressure, the control module controls the output path to open, allowing the nozzle to discharge liquid to clean the component to be cleaned. Therefore, the pressure accumulator can instantly provide a large amount of pressure and stabilize the pressure. When multiple output paths are open for liquid discharge, the pressure accumulator can maintain a constant and stable output pressure, compensating for the instantaneous pressure drop caused by the small storage flow rate of the existing common rail chamber. This solves the problem of the instantaneous drop in spray pressure during liquid discharge in existing cleaning systems, which affects the cleaning effect. Furthermore, due to the pressure accumulator's function, even if the power component is not working, the amount of liquid stored in the pressure accumulator can still provide enough liquid for the common rail module to perform a few cleaning cycles on the component to be cleaned. It can also provide a certain amount of liquid in case of power component failure, which can be used for emergency situations and prevent safety hazards caused by difficulty in cleaning the component when the power component fails.

[0094] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0095] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0096] Figure 1 A schematic diagram of a vehicle environmental sensing component cleaning system provided for related technologies;

[0097] Figure 2 This is a schematic diagram of the structure of a vehicle washing system provided in Embodiment 1 of the present invention;

[0098] Figure 3 This is a circuit block diagram of a vehicle washing system provided in Embodiment 1 of the present invention;

[0099] Figure 4 A cross-sectional view of a liquid storage tank and a pressure accumulator provided in Embodiment 1 of the present invention;

[0100] Figure 5 This is a schematic diagram showing the connection between a gas supply module, a liquid supply module, and a common rail module according to Embodiment 1 of the present invention.

[0101] Figure 6 This is a circuit block diagram showing the connection between a vehicle cleaning system and a vehicle controller according to Embodiment 1 of the present invention;

[0102] Figure 7 This is a flowchart of a vehicle cleaning method provided in Embodiment 3 of the present invention;

[0103] Figure 8 This is a flowchart of a vehicle cleaning method provided in Embodiment 4 of the present invention;

[0104] Figure 9 This is a flowchart of a vehicle cleaning method provided in Embodiment 5 of the present invention;

[0105] Figure 10 This is a flowchart of a vehicle cleaning method provided in Embodiment Six of the present invention;

[0106] Figure 11 This is a flowchart for determining current road surface information provided in Embodiment Six of the present invention;

[0107] Figure 12 This is a flowchart of a road condition image recognition algorithm model provided in Embodiment Six of the present invention.

[0108] The components include: 1. Common rail module; 11. Liquid inlet path; 12. Output path; 121. Air outlet path; 122. Liquid outlet path; 13. Input control submodule; 14. Output control submodule; 15. Pressure relief unit; 16. Air inlet path; 2. Liquid storage tank; 21. Liquid level detection device; 22. Liquid storage chamber; 3. Nozzle; 4. Pressure accumulator; 41. Pressure accumulator chamber; 5. First pressure detection device; 6. Control module; 7. Power component; 8. Return pipeline; 9. Air supply module; 91. Air pump; 92. Air storage tank; 93. Second pressure detection device; 10. Communication module; 20. Heating module; 30. Rainfall detection device; 40. Vehicle controller. Detailed Implementation

[0109] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0110] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0111] Example 1

[0112] Figure 2 This is a schematic diagram of a vehicle washing system provided in Embodiment 1 of the present invention. Figure 3 This is a circuit block diagram of a vehicle washing system provided in Embodiment 1 of the present invention. Figure 4 This is a cross-sectional view of a liquid storage tank 2 and a pressure accumulator 4 provided in Embodiment 1 of the present invention; this embodiment is applicable to cleaning vehicle components to be cleaned, including at least one of a camera, radar, front wiper, and rear wiper, such as... Figures 2-4 As shown, the vehicle cleaning system includes a common rail module 1, a liquid storage tank 2, a pressure accumulator 4, a first pressure detection device 5, a power unit 7, a control module 6, and a nozzle 3.

[0113] The common rail module 1 has a common rail cavity inside, which includes an inlet path 11 and an outlet path 12. The outlet path 12 is connected to the nozzle 3. The liquid storage tank 2 has a liquid storage chamber 22 for storing liquid. The common rail module 1 also includes an input control submodule 13 and an output control submodule 14. The input control submodule 13 is used to control the opening and closing of the inlet path 11. There are multiple output paths 12 and multiple output control submodules 14, and the multiple output control submodules 14 are used to control the opening and closing of multiple output paths 12 one by one.

[0114] In this design, the liquid storage tank 2 is a container for storing liquid, and the liquid storage cavity 22 is a space for storing liquid. The liquid inlet path 11 is the channel through which liquid enters the common rail cavity, and the output path 12 is the channel through which liquid or gas in the common rail cavity is output. The input control submodule 13 is a component for controlling the opening and closing of the liquid inlet path 11. When the liquid inlet path 11 is open, liquid can enter the common rail cavity through the liquid inlet path 11; when the liquid inlet path 11 is closed, liquid cannot enter the common rail cavity through the liquid inlet path 11. Preferably, the input control submodule 13 is a solenoid valve, which can easily control the opening and closing of the liquid inlet path 11. The output control submodule 14 is a component for controlling the opening and closing of the output path 12. When the output path 12 is open, liquid in the common rail cavity can be ejected from the nozzle 3 through the output path 12. Multiple output control submodules 14 are used to control the on and off of multiple output paths 12 in a one-to-one correspondence. That is, each output control submodule 14 is used to control the on and off of one output path 12. At the same time, the number of nozzles 3 is the same as the number of output paths 12 and corresponds one-to-one. Different nozzles 3 can be directed towards different parts to be cleaned, so that when different output paths 12 are on, liquid can be discharged through different nozzles 3 to clean different parts to be cleaned. Preferably, the output control submodule 14 is a solenoid valve, which can conveniently control the on and off of the output path 12.

[0115] The accumulator 4 has an accumulator chamber 41, and the power unit 7 has an inlet and an outlet. The inlet is connected to the storage chamber 22, and the outlet is connected to the accumulator chamber 41. The power unit 7 is used to transport the liquid in the storage chamber 22 to the accumulator chamber 41. The accumulator 4 is a component that maintains a constant pressure output of liquid, the accumulator chamber 41 is a space for storing liquid that can be output at a constant pressure, and the power unit 7 is a component that provides the power to transport the liquid. Preferably, the power unit 7 is an electric pump, which can conveniently transport the liquid in the storage chamber 22 to the accumulator chamber 41. Furthermore, since the accumulator chamber 41 is connected to the outlet of the electric pump, it can provide a certain buffering effect.

[0116] The accumulator 41 has a liquid supply port, which is connected to the liquid inlet 11. Since the liquid supply port is connected to the liquid inlet 11, the liquid stored in the accumulator 41 can enter the common rail chamber through the liquid supply port and the liquid inlet 11.

[0117] The first pressure detection element 5 is used to detect the pressure in the common rail cavity to obtain intracavity pressure information. The first pressure detection element 5 refers to a component capable of detecting the pressure in the common rail cavity. In a specific embodiment, the first pressure detection element 5 may include a pressure sensor, and the detection part of the pressure sensor may be disposed inside the common rail cavity, thereby enabling the detection of the pressure magnitude inside the common rail cavity. The intracavity pressure information reflects the pressure within the common rail cavity.

[0118] The input terminal of the control module 6 is electrically connected to the first pressure detection element 5, and the output terminal of the control module 6 is electrically connected to both the power element 7 and the output control submodule 14. The control module 6 is used to acquire the intracavitary pressure information, control the working state of the power element 7 based on the intracavitary pressure information and the preset intracavitary pressure, until the intracavitary pressure information is the preset intracavitary pressure, and when the intracavitary pressure information is the preset intracavitary pressure, control the output control submodule 14 to conduct the output path 12 so that the nozzle 3 discharges liquid to clean the part to be cleaned.

[0119] The power unit 7 transports the liquid in the storage chamber 22 to the accumulator chamber 41. Since the supply port of the accumulator chamber 41 is connected to the inlet channel 11, the liquid in the accumulator chamber 41 is also transported to the common rail chamber. At this time, the pressure in the common rail chamber and the pressure in the accumulator chamber 41 are the same. During the operation of the power unit 7, the pressure values ​​of the common rail chamber and the accumulator chamber 41 are different depending on the working state of the power unit 7, that is, the pressure information inside the chamber is different. For example, the higher the rotation speed of the power unit 7, the higher the pressure information inside the chamber will be, and the lower the rotation speed of the power unit 7, the lower the pressure information inside the chamber will be. The preset pressure inside the chamber refers to the pressure value that the common rail chamber should reach during cleaning. By controlling the working state of the power unit 7 based on the pressure information inside the chamber and the preset pressure inside the chamber, the pressure can be stabilized until the pressure information inside the chamber reaches the preset pressure. When the output channel 12 is open and liquid is discharged through the nozzle 3, the accumulator chamber 41 can maintain a constant pressure and stable output, which can compensate for the instantaneous pressure drop caused by the small storage flow rate of the existing common rail chamber.

[0120] The above solution, by setting up a pressure accumulator 41 and a first pressure detection element 5, allows the control module 6 to acquire the intracavitary pressure information detected by the first pressure detection element 5. Based on the intracavitary pressure information and a preset intracavitary pressure, the control module 6 controls the working state of the power element 7 until the intracavitary pressure information reaches the preset intracavitary pressure. When the intracavitary pressure information reaches the preset intracavitary pressure, the control output submodule 14 is activated to open the output path 12 so that the nozzle 3 can discharge liquid to clean the parts to be cleaned. Therefore, the pressure accumulator 41 can provide a large amount of pressure instantly and stabilize the pressure. When multiple output paths 12 are activated for liquid discharge, the pressure accumulator 41 can maintain a constant and stable output pressure, compensating for the instantaneous pressure drop caused by the small storage flow rate of the existing common rail cavity. This solves the problem that the instantaneous drop in spray pressure during liquid discharge in existing cleaning systems affects the cleaning effect. Meanwhile, due to the pressure storage function of the accumulator chamber 41, even if the power component 7 is not working, the amount of liquid stored in the accumulator chamber 41 can provide enough liquid for the common rail module 1 to clean the parts to be cleaned a few times. It can also provide a certain amount of liquid when the power component 7 fails, which can be used for emergency purposes and prevent the situation where it is difficult to clean the parts to be cleaned when the power component 7 fails, thus avoiding safety hazards.

[0121] In an optional embodiment of the present invention, the control module 6 is specifically used for:

[0122] Compare the intracavitary pressure information with the preset intracavitary pressure.

[0123] If the intracavity pressure information is greater than the preset intracavity pressure, the control power component 7 reduces the rotation speed and continues to perform the step of comparing the intracavity pressure information with the preset intracavity pressure until the intracavity pressure information is the preset intracavity pressure.

[0124] If the intracavity pressure information is less than the preset intracavity pressure, the control power component 7 increases the rotation speed and continues to perform the step of comparing the intracavity pressure information with the preset intracavity pressure until the intracavity pressure information is the preset intracavity pressure.

[0125] Specifically, when the rotational speed of the power component 7 decreases, the pressure applied to the accumulator chamber 41 is low, thus reducing the pressure in the accumulator chamber 41 and the common rail chamber, i.e., lowering the internal pressure information. Conversely, when the rotational speed of the power component 7 increases, the pressure applied to the accumulator chamber 41 is high, thus increasing the pressure in the accumulator chamber 41 and the common rail chamber, i.e., increasing the internal pressure information. Therefore, by controlling the rotational speed of the power component 7 to decrease when the internal pressure information is greater than the preset internal pressure, and by controlling the rotational speed of the power component 7 to increase when the internal pressure information is less than the preset internal pressure, the internal pressure information can be maintained at the preset internal pressure.

[0126] Preferably, the vehicle cleaning system also includes a PID controller. The difference between the cavity pressure information and the preset cavity pressure is input to the PID controller. The output of the PID controller is the rotational speed of the power component 7. The PID controller can adjust the rotational speed of the power component 7 according to the difference between the cavity pressure information and the preset cavity pressure, so that the cavity pressure information is maintained at the preset cavity pressure. Therefore, power consumption is saved while extending service life.

[0127] In optional embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the accumulator 4 is mounted on the reservoir 2. This avoids adding extra space and facilitates vehicle model compatibility. For example, the accumulator 4 can be integrated with the reservoir 2, thus avoiding additional space. Alternatively, the accumulator cavity 41 can be formed using the space near the edge of the reservoir 2, which also avoids adding space and allows for vehicle model compatibility. In another embodiment, the accumulator 4 can be externally mounted and separated from the reservoir 2; this is not a specific limitation but merely an example.

[0128] Furthermore, since the accumulator 41 is connected to the power unit 7 and acts as a buffer, its size can be calculated based on the flow rate of the power unit 7. Simultaneously, the capacity of the accumulator 41 can also be determined based on the injection volume of the nozzle 3 per unit time and the duration to be maintained. While there is no direct relationship between the capacity and pressure of the accumulator 41, they are complementary. In a specific embodiment, the volume of the accumulator 41 is determined using the following formula:

[0129]

[0130] Wherein, ΔV = the volume of liquid discharged or stored in the accumulator chamber 41 per second (L / s), P0 is the pre-charge medium pressure, P1 is the minimum working pressure of the accumulator chamber 41, P2 is the maximum working pressure of the accumulator chamber 41, and n is a variable exponent.

[0131] The pre-charge medium pressure refers to a set pressure reached by pre-filling the accumulator chamber 41 with a certain amount of medium. Specifically, the pre-filled medium can be air, and the pre-charge medium pressure is usually proportional to the maximum working pressure. n is a variable exponent; in isothermal conditions, n = 1, and in adiabatic conditions, n = 1.4.

[0132] The following specific embodiment illustrates how to calculate the volume of the accumulator chamber 41 using this formula:

[0133] P2 is calculated based on a head of 100m (1m = 0.1bar), therefore P2 = 10bar. Since pressure fluctuation ≤ 3bar / s, P1 = 7bar. P0 = maximum working pressure P2 * 60%, therefore P0 = 6bar. Because it is isothermal, n = 1. ΔV is calculated based on a flow rate (8 channels) of 0.576m³ / h, i.e., 0.00016m³ / s. Considering the standby pump start-up time is 5s, then ΔV = 0.0008m³, i.e., 0.8L. Finally, V0 = 3.1L. Therefore, a 3.1L accumulator chamber 41 needs to be selected.

[0134] In optional embodiments of the present invention, such as Figure 2 and Figure 5 As shown, the common rail module 1 also includes a pressure relief unit 15. The common rail cavity has a reflux outlet, and the storage tank 2 has a reflux inlet. A reflux pipe 8 is provided between the reflux outlet and the reflux inlet, and they are connected through the reflux pipe 8. The pressure relief unit 15 is used to control the opening and closing of the reflux pipe 8. The pressure relief unit 15 refers to a unit capable of controlling the opening and closing of the reflux pipe 8. In a specific embodiment, the pressure relief unit 15 may include a solenoid valve. When the reflux pipe 8 is open, the common rail cavity is connected to the storage tank 2, thereby releasing the pressure inside the common rail cavity, achieving the function of pressure relief. At the same time, the liquid in the common rail cavity can also flow back to the storage tank 2 through the reflux pipe 8, effectively preventing liquid waste.

[0135] In optional embodiments of the present invention, such as Figure 2 and Figure 6As shown, a liquid level detection element 21 is provided inside the liquid storage chamber 22. The liquid level detection element 21 is used to detect the liquid level information of the liquid storage chamber 22. Here, liquid level information refers to information that reflects the liquid level height, and the liquid level detection element 21 refers to a component that can detect the liquid level. In a specific embodiment, the liquid level detection element 21 can be a liquid level sensor. By placing the liquid level sensor inside the liquid storage tank 2, the liquid level height inside the liquid storage tank 2 can be detected. The control module 6 is electrically connected to the liquid level detection element 21, so the control module 6 can obtain the liquid level information detected by the liquid level detection element 21, thereby facilitating the determination of whether the common rail chamber and the accumulator chamber 41 are full of liquid. For example, by detecting the liquid level information of the liquid storage tank 2 before liquid injection and the liquid level information of the liquid storage tank 2 when the common rail chamber and the accumulator chamber 41 are full of liquid, if the decrease in liquid level in the liquid storage tank 2 is greater than the total volume of the common rail chamber and the accumulator chamber 41, it indicates that the common rail chamber is highly likely to be full of liquid.

[0136] In optional embodiments of the present invention, such as Figure 2 and Figure 5 As shown, the vehicle washing system also includes an air supply module 9, and the common rail cavity includes an air intake passage 16. The air supply module 9 is connected to the air intake passage 16. The input control submodule 13 is also used to control the opening and closing of the air intake passage 16. The control module 6 is used to control the input control submodule 13, the output control submodule 14, the power component 7, and the air supply module 9 to switch the common rail cavity between liquid storage and gas storage. The air supply module 9 is a module capable of providing gas. Since the air supply module 9 is connected to the air intake passage 16, the gas provided by the air supply module 9 can enter the common rail cavity. Therefore, when the air intake passage 16 is open, the gas provided by the air supply module 9 can enter the common rail cavity; when the air intake passage 16 is closed, the gas provided by the air supply module 9 cannot enter the common rail cavity. When the input control submodule 13 controls the air intake passage 16 to open and the liquid inlet passage 11 to close, and the pressure relief unit 15 to open the return pipe 8, gas enters the common rail cavity, and excess liquid is discharged. Therefore, the common rail cavity will switch from liquid storage to gas storage. When the input control submodule 13 controls the air intake path 16 to close and the liquid inlet path 11 to open, and the pressure relief unit 15 opens the return pipeline 8, liquid enters the common rail chamber, and excess gas is discharged. Therefore, the common rail chamber will switch from storing gas to storing liquid. Preferably, in a specific embodiment, the input control submodule 13 includes two solenoid valves: one solenoid valve is used to control the opening and closing of the air intake path 16, and the other solenoid valve is used to control the opening and closing of the liquid inlet path 11.

[0137] Preferably, the air supply module 9 includes an air pump 91 and an air storage tank 92. The air storage tank 92 has an air supply port connected to the air inlet 16. The air pump 91 is connected to the air storage tank 92 and is used to control the air supply from the air storage tank 92 to the air inlet 16. The air pump 91 is electrically connected to the control module 6, which is used to control the operating status of the air pump 91. The air storage tank 92 is a container that stores gas, and the air pump 91 is a component that compresses air into the air storage tank 92. The operating status of the air pump 91 refers to whether it is running or stopped, and may also include the speed of the air pump 91. By setting up the air pump 91 and the air storage tank 92, air can be conveniently supplied to the air inlet 16 when needed.

[0138] Based on the above embodiments, the vehicle washing system further includes a second pressure detection element 93, which is used to detect the air pressure of the air tank 92. The control module 6 is electrically connected to the second pressure detection element 93 and is used to acquire the air pressure of the air tank 92. The second pressure detection element 93 refers to a component capable of detecting air pressure. In a specific embodiment, the second pressure detection element 93 is a pressure sensor, and the detection part of the pressure sensor is located inside the air tank 92, thereby enabling the detection of the air pressure in the air tank 92. The control module 6 can also control the operating state of the air pump 91. When the operating state of the air pump 91 changes, the air pressure inside the air tank 92 also changes. Therefore, by obtaining the air pressure data of the air tank 92 detected by the second pressure detection element 93 and then controlling the operating state of the air pump 91, the control module 6 can maintain the air pressure inside the air tank 92 at a specific value.

[0139] Preferably, the output path 12 may include a liquid outlet path 122 and a gas outlet path 121. Both the gas outlet path 121 and the liquid outlet path 122 are connected to the nozzle 3. The nozzle 3 is used to sequentially spray the liquid and gas in the common rail cavity to the part to be cleaned for cleaning. Since both the gas outlet path 121 and the liquid outlet path 122 are connected to the nozzle 3, when the common rail cavity is full of liquid, the liquid can be sprayed out of the nozzle 3 through the liquid outlet path 122. However, when the common rail cavity is full of gas, the gas can be sprayed out of the nozzle 3 through the gas outlet path 121. Therefore, the nozzle 3 can sequentially spray the liquid and gas in the common rail cavity to the part to be cleaned for cleaning. The nozzle 3 can have various structures. For example, the nozzle 3 is provided with a liquid spray port and a gas spray port. The liquid spray port is connected to a liquid inlet connector, the liquid outlet path 122 is connected to the liquid inlet connector, the rear end of the gas spray port is connected to a gas supply interface, and the gas outlet path 121 is connected to the gas supply interface. Thus, the nozzle 3 can spray liquid through the liquid spray port to rinse the part to be cleaned and then blow dry the part to be cleaned through the gas spray port. In another specific embodiment, the nozzle 3 has a spray hole, which is connected to an inlet connector. The liquid outlet path 122 and the air outlet path 121 are both connected to the inlet connector, so that the nozzle 3 can spray liquid through the spray hole to rinse the part to be cleaned and then blow dry the part to be cleaned through the spray hole.

[0140] Preferably, the output control submodule 14 includes two solenoid valves: one solenoid valve is used to control the opening and closing of the liquid outlet path 122, and the other solenoid valve is used to control the opening and closing of the gas outlet path 121.

[0141] In optional embodiments of the present invention, such as Figure 6 As shown, the vehicle includes a vehicle controller 40, and the common rail module 1 also includes a communication module 10. The control module 6 is electrically connected to the communication module 10, and the control module 6 communicates with the vehicle controller 40 through the communication module 10. The vehicle controller 40 is an electronic device that controls the entire vehicle system. It is responsible for monitoring, controlling, and regulating the operating status of various vehicle components to ensure the normal operation and safety of the vehicle. The communication module 10 is a module that enables the control module 6 to communicate with the vehicle controller 40. Preferably, the communication module 10 includes either a CAN communication module 10 or a LIN communication module 10. In this way, the control module 6 and the vehicle controller 40 can communicate conveniently, and the control module 6 can clean the components to be cleaned according to the vehicle's status.

[0142] In an optional embodiment of the present invention, the vehicle washing system further includes a heating module 20, which is used to heat the parts to be washed. The heating module 20 refers to a module capable of heating the parts to be washed, and the parts to be washed can be placed in the heating area of ​​the heating module 20, thereby facilitating heating. Preferably, the heating module 20 can be a PTC heater. The structure of the heating module 20 can be varied, as long as it can achieve the heating function; no specific limitation is made here.

[0143] In an optional embodiment of the present invention, the vehicle washing system further includes a rainfall detection component 30, which is used to detect rainfall outside the vehicle to obtain rainfall information. The rainfall detection component 30 refers to a component capable of monitoring rainfall outside the vehicle, and the rainfall information reflects whether it is raining and the amount of rainfall. Preferably, the rainfall detection component 30 is a rainfall sensor, which is suitable for use by meteorological stations, hydrological stations, agriculture, forestry, national defense, and other relevant departments to remotely measure liquid precipitation, precipitation intensity, and the start and end time of precipitation. It is also used in automatic hydrological monitoring systems and automatic field monitoring stations for flood control, water supply scheduling, and hydrological management of power station reservoirs, serving as a precipitation measurement sensor. The rainfall sensor is an infrared optical system with a light-emitting component responsible for emitting infrared light. When the glass surface is dry, almost 100% of the light is reflected back, allowing the sensor to receive a large amount of reflected light, thus the system assumes a sunny day. Therefore, the rainfall sensor can detect rainfall information. Specifically, the rain sensor 30 is installed on the bracket where the rearview mirror and windshield of the car are attached, thus enabling convenient detection of rainfall information. The rain sensor 30 can communicate directly with the control module 6 to transmit rainfall information to the control module 6, or it can communicate with the vehicle controller 40 to transmit rainfall information to the control module 6 through the vehicle controller 40.

[0144] Example 2

[0145] Embodiment 2 of the present invention provides a vehicle, which includes a vehicle body, a component to be cleaned and a vehicle cleaning system as described in any embodiment of the present invention on the vehicle body.

[0146] By equipping vehicles with a vehicle washing system, the problem of inconvenience in wiping cleanable parts while the car is in motion, which could affect driving safety, is solved, thus improving vehicle safety during driving.

[0147] In an optional embodiment of the present invention, the vehicle includes a vehicle controller, and the vehicle cleaning system includes a control module and a communication module. The control module communicates with the vehicle controller through the communication module. The vehicle controller is an electronic device that controls the entire vehicle system. It is responsible for monitoring, controlling, and regulating the operating status of various vehicle components to ensure the normal operation and safety of the vehicle. In this way, the control module and the vehicle controller can communicate easily, and the control module can clean the components to be cleaned according to the vehicle's status.

[0148] Example 3

[0149] Figure 7This is a flowchart of a vehicle cleaning method provided in Embodiment 3 of the present invention. This vehicle cleaning method is applied to the vehicle cleaning system described in any embodiment of the present invention. The vehicle cleaning method can be implemented in hardware and / or software, and is executed by the control module of the vehicle cleaning system. Figure 7 As shown, the vehicle cleaning method includes:

[0150] S110. Obtain a cleaning instruction, the cleaning instruction including a liquid washing instruction.

[0151] Among them, the cleaning instruction refers to the instruction that instructs the vehicle cleaning system to clean the parts to be cleaned, and the liquid wash instruction refers to the instruction that instructs the vehicle cleaning system to use liquid to clean the parts to be cleaned.

[0152] S120. Based on the liquid washing command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid.

[0153] The input control submodule controls the opening and closing of the liquid inlet path. When the liquid inlet path is open, liquid can enter the common rail cavity through it; when the liquid inlet path is closed, liquid cannot enter the common rail cavity. The power unit transports the liquid in the storage cavity to the accumulator cavity. The accumulator cavity's supply port is connected to the liquid inlet path. Therefore, when the power unit is activated and the input control submodule simultaneously opens the liquid inlet path, liquid can flow into the accumulator cavity and the common rail cavity.

[0154] S130. Determine whether the common rail cavity and the accumulator cavity are filled with liquid.

[0155] If the common rail chamber and the accumulator chamber are filled with liquid, proceed to step S140. If the common rail chamber and the accumulator chamber are not filled with liquid, continue to step S130.

[0156] S140. Obtain the cavity pressure information, control the working state of the power component based on the cavity pressure information and the preset cavity pressure, until the cavity pressure information is the preset cavity pressure, and when the cavity pressure information is the preset cavity pressure, control the output control submodule to turn on the output path so that the nozzle outputs liquid to clean the component to be cleaned.

[0157] When the common rail chamber and the accumulator chamber are filled with liquid, the subsequent output control submodule turns on the output path so that when the nozzle sprays liquid to clean the parts to be cleaned, the sprayed liquid is free of air bubbles, thus ensuring the cleanliness during cleaning.

[0158] The intracavitary pressure information reflects the pressure within the common rail cavity. The power unit transports liquid from the storage cavity to the accumulator cavity. Since the accumulator cavity's supply port is connected to the inlet path, the liquid in the accumulator cavity is also transported to the common rail cavity, at which point the pressure in the common rail cavity and the accumulator cavity are the same. During the operation of the power unit, the pressure values ​​in the common rail cavity and the accumulator cavity differ depending on the power unit's operating state; that is, the intracavitary pressure information varies. For example, the higher the power unit's rotation speed, the higher the intracavitary pressure information; the lower the power unit's rotation speed, the lower the intracavitary pressure information. The preset intracavitary pressure refers to the pre-set pressure value that the common rail cavity should reach during cleaning. By controlling the power unit's operating state based on the intracavitary pressure information and the preset intracavitary pressure until the intracavitary pressure information reaches the preset intracavitary pressure, the pressure can be stabilized. When the output path is open and liquid is discharged through the nozzle, the accumulator cavity can maintain a constant and stable output pressure, compensating for the instantaneous pressure drop caused by the small storage flow rate of the existing common rail cavity.

[0159] The above solution obtains a cleaning command, including a liquid washing command, and then controls the input control submodule and power unit based on the liquid washing command to start liquid injection into the common rail chamber and the accumulator chamber. It then determines whether the common rail chamber and the accumulator chamber are full of liquid. Finally, when the common rail chamber and the accumulator chamber are full of liquid, it obtains the internal pressure information and controls the working state of the power unit based on the internal pressure information and a preset internal pressure until the internal pressure information reaches the preset internal pressure. When the internal pressure information reaches the preset internal pressure, it controls the output control submodule to open the output path so that the nozzle can discharge liquid to clean the parts to be cleaned. Therefore, the accumulator chamber can instantly provide a large amount of pressure and stabilize the pressure. When multiple output paths are open for liquid discharge, the accumulator chamber can maintain a constant and stable output pressure, compensating for the instantaneous pressure drop caused by the small storage flow rate of the existing common rail chamber, and solving the problem that the instantaneous drop in spray pressure during liquid discharge in existing cleaning systems affects the cleaning effect. Meanwhile, due to the pressure storage function of the accumulator, even if the power component is not working, the amount of liquid stored in the accumulator can provide enough liquid for the common rail module to perform a few cleanings on the components to be cleaned. It can also provide a certain amount of liquid in case of power component failure, which can be used for emergency purposes and prevent situations where it is difficult to clean the components to be cleaned when the power component fails, thus avoiding safety hazards.

[0160] In an optional embodiment of the present invention, controlling the working state of the power component based on the intracavity pressure information and a preset intracavity pressure until the intracavity pressure information is the preset intracavity pressure includes:

[0161] Compare the intracavitary pressure information with the preset intracavitary pressure.

[0162] If the intracavitary pressure information is greater than the preset intracavitary pressure, the power component is controlled to reduce its rotation speed and continue to perform the step of comparing the intracavitary pressure information with the preset intracavitary pressure until the intracavitary pressure information is the preset intracavitary pressure.

[0163] If the intracavitary pressure information is less than the preset intracavitary pressure, the power component is controlled to increase its rotational speed and continue to perform the step of comparing the intracavitary pressure information with the preset intracavitary pressure until the intracavitary pressure information is the preset intracavitary pressure.

[0164] Specifically, when the rotational speed of the power component decreases, the pressure applied to the accumulator chamber is low, thus reducing the pressure in both the accumulator chamber and the common rail chamber, resulting in a decrease in the internal pressure information. Conversely, when the rotational speed of the power component increases, the pressure applied to the accumulator chamber is high, thus increasing the pressure in both the accumulator chamber and the common rail chamber, resulting in an increase in the internal pressure information. Therefore, by controlling the rotational speed of the power component to decrease when the internal pressure information is greater than the preset internal pressure, and by controlling the rotational speed of the power component to increase when the internal pressure information is less than the preset internal pressure, the internal pressure information can be maintained at the preset internal pressure.

[0165] In an optional embodiment of the present invention, before determining whether the common rail cavity and the accumulator cavity are filled with liquid, the method further includes:

[0166] Obtain the liquid level information of the storage tank detected by the liquid level detection device.

[0167] Accordingly, determining whether the common rail chamber and the accumulator chamber are filled with liquid includes:

[0168] The amount of liquid reduction in the storage chamber is determined based on the liquid level information.

[0169] Determine whether the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber.

[0170] If the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber, then the common rail chamber and the accumulator chamber are determined to be full of liquid.

[0171] If the amount of liquid reduction is not greater than the sum of the volumes of the common rail cavity and the accumulator cavity, it is determined that the common rail cavity and the accumulator cavity are not filled with liquid.

[0172] After determining that the common rail chamber and the accumulator chamber are filled with liquid, the method further includes: controlling the pressure relief unit to close the return pipeline.

[0173] Liquid level information refers to information reflecting the liquid level within the storage tank. The liquid level detection device can be a liquid level sensor, which can be installed inside the storage tank to detect the liquid level. There are several ways to obtain the liquid level information detected by the liquid level detection device; for example, it can be electrically connected to the liquid level detection device to obtain the liquid level information detected by the device in the storage tank.

[0174] Liquid reduction refers to the amount of water transferred from the storage tank to the accumulator and common rail chambers. When the liquid reduction is greater than the sum of the volumes of the common rail and the accumulator, it is determined that the accumulator and common rail chambers are full, and the pressure relief unit closes the return pipeline. When the liquid reduction is not greater than the sum of the volumes of the common rail and the accumulator, it is determined that the common rail and the accumulator are not full, and the process can return to the previous step to determine whether the liquid reduction is greater than the sum of the volumes of the common rail and the accumulator, until the liquid reduction is greater than the sum of the volumes of the common rail and the accumulator.

[0175] In addition, based on the liquid washing command control input control submodule and power component, when the common rail cavity and accumulator cavity start to receive liquid, the pressure relief unit also opens the return pipeline, so that excess liquid can flow back to the storage cavity.

[0176] Example 4

[0177] Figure 8 This is a flowchart of a vehicle cleaning method provided in Embodiment 4 of the present invention. This embodiment is an improvement upon Embodiment 3, and optionally, the cleaning command further includes an air-washing command. After obtaining the cleaning command, the method further includes: controlling the input control submodule and the air supply module based on the air-washing command to start air intake into the common rail chamber through the air intake path; determining whether the common rail chamber and the accumulator chamber are full of gas; if the common rail chamber and the accumulator chamber are full of gas, controlling the pressure relief unit to close the return pipeline, and controlling the output control submodule to open the output path to allow the nozzle to output air to clean the parts to be cleaned. Figure 8 As shown, the vehicle cleaning method includes:

[0178] S210. Obtain cleaning instructions, including liquid cleaning instructions and air cleaning instructions.

[0179] Among them, the air wash command refers to the instruction that instructs the vehicle cleaning system to use gas to clean the parts to be cleaned.

[0180] S220. Based on the liquid washing command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid.

[0181] S230. Determine whether the common rail cavity and the accumulator cavity are filled with liquid.

[0182] If the common rail chamber and the accumulator chamber are filled with liquid, proceed to step S240. If the common rail chamber and the accumulator chamber are not filled with liquid, continue to step S230.

[0183] S240. Obtain the cavity pressure information, control the working state of the power component based on the cavity pressure information and the preset cavity pressure, until the cavity pressure information is the preset cavity pressure, and when the cavity pressure information is the preset cavity pressure, control the output control submodule to turn on the output path so that the nozzle outputs liquid to clean the component to be cleaned.

[0184] S250, Based on the gas washing command control input control submodule and the air supply module, the common rail cavity starts to intake air through the air intake path.

[0185] After the liquid spraying is completed, to prevent residual moisture from affecting the driver's vision, air can be used to dry the parts to be cleaned. Before air spraying, it is necessary to ensure that there is gas in the common rail cavity. Therefore, the liquid in the common rail cavity needs to be drained and air intake needs to be started. At this time, the input control submodule can be controlled to open the air intake path and control the air supply module to start supplying air. During the air intake process, the liquid in the common rail cavity will be discharged from the output path. Alternatively, when the common rail cavity and the liquid storage cavity are connected through the return pipe, the output path can be closed, allowing the liquid in the common rail cavity to be discharged from the return pipe to the liquid storage cavity.

[0186] S260. Determine whether the common rail cavity and the accumulator cavity are filled with gas.

[0187] If the common rail cavity and the accumulator cavity are filled with gas, proceed to step S270. If the common rail cavity and the accumulator cavity are not filled with gas, continue to proceed to step S260 until the common rail cavity and the accumulator cavity are filled with gas.

[0188] S270. Control the pressure relief unit to close the return pipeline and control the output control submodule to open the output path so that the nozzle can release air to clean the component to be cleaned.

[0189] When the common rail cavity is filled with gas, the output control submodule can be controlled to open the output path. At this time, the gas in the common rail cavity can be sprayed out through the nozzle of the output path, which can dry the moisture on the parts to be cleaned and effectively prevent moisture residue from affecting the driver's vision.

[0190] The above solution involves first controlling the input control submodule and power unit to initiate liquid intake into the common rail chamber and accumulator chamber through the liquid inlet path. Then, it determines whether the common rail chamber and accumulator chamber are full of liquid. When full, the power unit's operating state is adjusted to ensure the chamber pressure reaches the preset pressure. Next, the output control submodule is controlled to eject the liquid from the common rail chamber through the output nozzle to clean the components to be cleaned. Then, the input control submodule and air supply module are controlled to discharge the liquid from the common rail chamber and initiate air intake through the air inlet path. Finally, it determines whether the common rail chamber is full of gas. When full, the output control submodule is controlled to eject the gas from the common rail chamber through the output nozzle to clean the components. This allows the nozzle to first clean the components with liquid while the vehicle is in motion, and then dry them with gas, preventing residual moisture from interfering with the normal use of the components. This solves the problem of inconvenience in wiping components while the vehicle is in motion, which could affect driving safety, and improves vehicle safety during operation. Simultaneously, gas and liquid can share a common rail chamber. During use, the gas and liquid within the common rail chamber can be switched, effectively utilizing space and reducing the size of the vehicle washing system. Furthermore, when multiple output paths are engaged for liquid dispensing, the accumulator chamber can maintain a constant and stable output pressure, compensating for the instantaneous pressure drop caused by the small storage capacity of existing common rail chambers. This solves the problem of the instantaneous drop in spray pressure during liquid dispensing in existing cleaning systems, which affects the cleaning effect.

[0191] In an optional embodiment of the present invention, before determining whether the common rail cavity and the accumulator cavity are filled with gas, the method further includes:

[0192] Obtain the liquid level information of the storage tank detected by the liquid level detection device.

[0193] Accordingly, determining whether the common rail cavity and the accumulator cavity are filled with gas includes:

[0194] The amount of liquid added to the storage chamber is determined based on the liquid level information.

[0195] Determine whether the increase in liquid volume is greater than the sum of the volumes of the accumulator chamber and the common rail chamber.

[0196] If the increase in liquid level is greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are filled with gas.

[0197] If the increase in liquid level is not greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are not filled with gas.

[0198] Liquid level information refers to information reflecting the liquid level within the storage tank. The liquid level detection device can be a liquid level sensor, which can be installed inside the storage tank to detect the liquid level. There are several ways to obtain the liquid level information detected by the liquid level detection device; for example, it can be electrically connected to the liquid level detection device to obtain the liquid level information detected by the device in the storage tank.

[0199] The liquid increase refers to the amount of water flowing back into the storage tank. When the liquid increase is greater than the sum of the volumes of the common rail chamber and the accumulator chamber, it is determined that the accumulator chamber and the common rail chamber are filled with gas, and the pressure relief unit can be controlled to close the return pipeline. When the liquid increase is not greater than the sum of the volumes of the common rail chamber and the accumulator chamber, it is determined that the common rail chamber and the accumulator chamber are not filled with liquid and gas, and the process can return to the step of determining whether the liquid increase is greater than the sum of the volumes of the accumulator chamber and the common rail chamber, until the liquid level increase is greater than the sum of the volumes of the accumulator chamber and the common rail chamber.

[0200] Example 5

[0201] Figure 9 This is a flowchart of a vehicle cleaning method provided in Embodiment 5 of the present invention. This embodiment is an improvement upon Embodiment 4, and optionally, the vehicle cleaning method further includes: acquiring a vehicle status signal sent by the vehicle controller; and determining a cleaning scheme based on the vehicle status signal. Figure 9 As shown, the vehicle cleaning method includes:

[0202] S310: Obtain the vehicle status signal sent by the vehicle controller.

[0203] S320. Determine a cleaning plan based on the vehicle status signal.

[0204] Vehicle status signals refer to signals reflecting the vehicle's driving status, including its direction of travel and speed. Since the vehicle cleaning system includes multiple output paths, there are also multiple components to be cleaned, with different output paths corresponding to different components. The cleaning plan refers to which specific components will be cleaned, the cleaning time, and the cleaning method.

[0205] By acquiring the vehicle status signal sent by the vehicle controller and then determining the cleaning plan based on the vehicle status signal, the cleaning plan can be adjusted according to the actual situation of the vehicle, thus better matching the actual cleaning needs of the vehicle.

[0206] S330. Obtain cleaning instructions, including liquid washing instructions and air washing instructions.

[0207] S340. Based on the liquid washing command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid.

[0208] S350. Determine whether the common rail cavity and the accumulator cavity are filled with liquid.

[0209] If the common rail chamber and the accumulator chamber are filled with liquid, proceed to step S360. If the common rail chamber and the accumulator chamber are not filled with liquid, continue to step S370.

[0210] S360. Obtain the cavity pressure information, control the working state of the power component based on the cavity pressure information and the preset cavity pressure, until the cavity pressure information is the preset cavity pressure, and when the cavity pressure information is the preset cavity pressure, control the output control submodule to turn on the output path so that the nozzle outputs liquid to clean the component to be cleaned.

[0211] S370. Based on the gas washing command control input control submodule and the air supply module, the common rail cavity starts to intake air through the air intake path.

[0212] S380. Determine whether the common rail cavity and the accumulator cavity are filled with gas.

[0213] If the common rail cavity and the accumulator cavity are filled with gas, proceed to step S390. If the common rail cavity and the accumulator cavity are not filled with gas, continue to proceed to step S370 until the common rail cavity and the accumulator cavity are filled with gas.

[0214] S390. Control the pressure relief unit to close the return pipeline and control the output control submodule to open the output path so that the nozzle can release air to clean the component to be cleaned.

[0215] Based on the above embodiments, the component to be cleaned includes at least one of a rearview camera and a rear-side radar, the vehicle status signal includes a vehicle driving signal, and the step of determining a cleaning scheme based on the vehicle status signal includes:

[0216] The vehicle is determined to be reversing based on the vehicle driving signal.

[0217] If it is determined that the vehicle is reversing, the cleaning command is output to control the output control submodule corresponding to the rearview camera and / or the rear radar to turn on the corresponding output path to clean the rearview camera and the rear radar.

[0218] Among them, the vehicle driving signal indicates whether the vehicle is reversing or moving forward. The rearview camera is one type of reversing image vehicle camera; its main function is to display the image on the screen in front of the driver when reversing, providing a clear view of the real-time video image behind the vehicle. The rear-side radar refers to the parking radar at the rear of the vehicle, a safety aid device for parking or reversing. Since different output paths are used to output gas or liquid to clean different components, both the rearview camera and the rear-side radar play a crucial role in safe reversing. By outputting a cleaning command when the vehicle is reversing, the output control submodule corresponding to the rearview camera and / or the rear-side radar is activated to clean the corresponding output paths, prioritizing the cleaning of the rearview camera and rear-side radar during reversing, thus improving the safety of reversing. Side camera.

[0219] In an optional embodiment of the present invention, the component to be cleaned includes at least one of a side camera, a side radar, a side-view camera, and a side radar; the vehicle status signal further includes a vehicle speed signal; and the step of determining a cleaning scheme based on the vehicle status signal includes:

[0220] The vehicle's direction of travel is determined based on the vehicle's driving signal.

[0221] If the vehicle is moving forward, determine whether the vehicle speed is greater than a preset speed threshold based on the vehicle speed signal.

[0222] If the vehicle speed is greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar.

[0223] If the vehicle speed is not greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar.

[0224] Among them, vehicle speed signal refers to the signal reflecting the vehicle's speed; side camera is an on-board camera used to monitor the left and right sides of the vehicle to assist in safe driving; side radar refers to the parking radar on the side of the vehicle; side camera refers to the camera on the vehicle used to capture the blind spots on the side of the vehicle; and side radar refers to the radar on the vehicle used to sense the blind spots on the side of the vehicle.

[0225] The preset speed threshold is a threshold used to distinguish between high-speed and low-speed vehicles. When the vehicle speed exceeds the preset speed threshold, it indicates that the vehicle is traveling at high speed, and the side cameras and side radars are cleaned first. When the vehicle speed is below the preset speed threshold, it indicates that the vehicle is traveling at low speed, and the side cameras and side radars are cleaned first. This method allows for the cleaning of different components based on the vehicle's speed and direction of travel, better meeting the driver's actual needs and improving driving safety.

[0226] In an optional embodiment of the present invention, the component to be cleaned further includes a main cleaning component and a secondary cleaning component; the vehicle cleaning method further includes:

[0227] Based on the liquid level information, determine whether the water volume in the storage chamber is sufficient.

[0228] If the water volume in the storage chamber is insufficient, the air washing command is output to control the output path corresponding to the secondary cleaning component to output air for pneumatic cleaning of the secondary cleaning component. Then, the liquid washing command is output to control the output path corresponding to the main cleaning component to output liquid for water washing of the main cleaning component. Finally, the air washing command is output to control the output path corresponding to the main cleaning component to output air for pneumatic cleaning of the main cleaning component.

[0229] Since the liquid level information reflects the liquid level within the storage chamber, it can be used to determine whether the water volume in the storage chamber is sufficient. Specifically, determining whether the water volume in the storage chamber is sufficient based on the liquid level information includes: comparing the liquid level information with a first preset liquid level information; if the liquid level information is higher than the first preset liquid level information, it is determined that the water volume in the storage chamber is sufficient; if the liquid level information is not higher than the first preset liquid level information, it is determined that the water volume in the storage chamber is insufficient. The first preset liquid level information is a threshold reflecting whether the quantity in the storage chamber is sufficient.

[0230] Primary cleaning components refer to those that are most important for driving safety in the vehicle, while secondary cleaning components are those that are less important than the primary cleaning components. By prioritizing pneumatic cleaning of secondary cleaning components when water is insufficient, and then washing the primary cleaning components with water first and then using pneumatic cleaning, water consumption can be saved while ensuring vehicle safety.

[0231] Example 6

[0232] Figure 10 This is a flowchart of a vehicle cleaning method provided in Embodiment Six of the present invention. This embodiment is an improvement upon Embodiment Five, and optionally, the vehicle cleaning method further includes: determining current road surface information; and determining a cleaning plan based on the current road surface information. Figure 10As shown, the vehicle cleaning method includes:

[0233] S411. Obtain the vehicle status signal sent by the vehicle controller.

[0234] S421. Determine a cleaning plan based on the vehicle status signal.

[0235] S412. Determine the current road surface information.

[0236] Among them, the current road surface information refers to the relevant information about the road surface that the vehicle is currently traveling on, such as sandy road sections, dusty road sections, water-crossing road sections, and muddy road sections.

[0237] S422. Determine a cleaning plan based on the current road surface information.

[0238] The cleaning plan refers to which specific parts to be cleaned, the cleaning time, and the cleaning method. Since different current road conditions require different cleaning plans, determining the cleaning plan based on the current road conditions allows for a better match to the vehicle's actual needs and improves driving safety. Preferably, the vehicle cleaning system includes a GPS module, and the vehicle is equipped with temperature and humidity sensors to determine the vehicle's location, terrain, and weather conditions, thus obtaining current road information.

[0239] S430. Obtain cleaning instructions, including liquid washing instructions and air washing instructions.

[0240] S440. Based on the liquid washing command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid.

[0241] S450. Determine whether the common rail chamber and the accumulator chamber are filled with liquid.

[0242] If the common rail chamber and the accumulator chamber are filled with liquid, proceed to step S460. If the common rail chamber and the accumulator chamber are not filled with liquid, continue to step S470.

[0243] S460. Obtain the cavity pressure information, control the working state of the power component based on the cavity pressure information and the preset cavity pressure, until the cavity pressure information is the preset cavity pressure, and when the cavity pressure information is the preset cavity pressure, control the output control submodule to turn on the output path so that the nozzle outputs liquid to clean the component to be cleaned.

[0244] S470. Based on the gas washing command control input control submodule and the air supply module, the common rail cavity starts to intake air through the air intake path.

[0245] S480. Determine whether the common rail cavity and the accumulator cavity are filled with gas.

[0246] If the common rail cavity and the accumulator cavity are filled with gas, proceed to step S490. If the common rail cavity and the accumulator cavity are not filled with gas, continue to proceed to step S470 until the common rail cavity and the accumulator cavity are filled with gas.

[0247] S490, Control the pressure relief unit to close the return pipeline, and control the output control submodule to open the output path so that the nozzle can release air to clean the component to be cleaned.

[0248] In an optional embodiment of the present invention, determining the cleaning scheme based on the current road surface information includes:

[0249] Determine whether the current road surface information indicates a muddy section.

[0250] If the current road surface information is a muddy section, the sensing information of the component to be cleaned is acquired in real time. Based on the sensing information, it is determined whether the component to be cleaned meets the first preset dirt standard. If the component to be cleaned meets the first preset dirt standard, the current cleaning pressure is reduced from the standard cleaning pressure to the first cleaning pressure, the current cleaning time is reduced from the standard cleaning time to the first cleaning time, and the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time. If the component to be cleaned does not meet the first preset dirt standard, it is determined in real time whether the current road surface information is not a muddy section. If the current road surface information is not a muddy section, the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the standard cleaning time and the standard cleaning pressure.

[0251] The perceived information refers to the information about the external environment perceived by the component to be cleaned. The first preset dirt standard refers to a pre-set standard that the perceived information of the component to be cleaned will meet when the component is relatively dirty and still needs cleaning. Preferably, in a specific embodiment, the component to be cleaned can be a camera, and the perceived information is the road image information acquired by the camera. The road image information is processed into grayscale. The first preset dirt standard includes a first preset grayscale value. When the grayscale information obtained by grayscale processing the road image information is greater than the first preset grayscale value, it indicates that the component to be cleaned meets the first preset dirt standard. Since the image captured by the camera has different colors and brightness for each pixel, it contains a lot of image feature information. Any color in the image is composed of the three primary colors: red, green, and blue. If the color of a pixel is RGB(R, G, B), in the RGB model, when R = G = B, its value is the grayscale value. In a grayscale image, each pixel uses only one byte to store its grayscale value, and each pixel has only one sampled color. The grayscale value ranges from 0 to 255. In a black and white image, the darkest is black (black has a grayscale value of 0), the brightest is white (white has a grayscale value of 255), and there are transitional colors with varying degrees of gray in between. When a camera is covered in dirt, due to varying degrees of dirt, areas where dirt accumulates will have significantly reduced light transmittance. The grayscale value of the pixels in these areas will be lower than that of the clean areas, which have higher light transmittance and appear whiter in the photo. Therefore, by converting the image captured by the camera to grayscale and analyzing the grayscale values ​​of each pixel, we can evaluate whether the camera surface is clean or dirty, and analyze the cleaning efficiency before and after cleaning.

[0252] The standard cleaning time refers to the pre-set standard time for cleaning normal road sections, and the standard cleaning pressure refers to the pre-set standard pressure for cleaning normal road sections. The current cleaning time refers to the time at which the cleaning is currently being performed. When the cleaning command includes a liquid washing command, the current cleaning time includes the current liquid discharge time; when the cleaning command includes a gas washing command, the current cleaning time includes the current gas discharge time. The current cleaning pressure refers to the pressure at which the cleaning is currently being performed. When the cleaning command includes a liquid washing command, the current cleaning time includes the liquid pressure output from the common rail chamber at the current liquid discharge time; when the cleaning command includes a gas washing command, the current cleaning time includes the gas pressure from the common rail chamber. Preferably, in a specific embodiment, the standard cleaning time is 3 seconds, the first cleaning time is 2 seconds, the standard cleaning pressure is 6 bar, and the first cleaning time is 3 bar.

[0253] Because muddy road sections are different from ordinary road sections, dirt easily adheres to the parts to be cleaned but is easy to clean. By reducing the current cleaning pressure from the standard cleaning pressure to the first cleaning pressure and the current cleaning time from the standard cleaning time to the first cleaning time when the parts to be cleaned meet a first preset dirt standard, power consumption can be reduced to increase the number of cleaning cycles. For parts to be cleaned that are not heavily soiled, cleaning can be performed after driving through the muddy road section, thereby saving power consumption.

[0254] Based on the above embodiments, after the step of controlling the output control submodule to turn on the corresponding output path and clean the component to be cleaned using the current cleaning pressure and the current cleaning time, the method further includes:

[0255] Determine whether the component to be cleaned meets the first preset dirt standard again within a first preset time period.

[0256] If the component to be cleaned again meets the first preset dirt standard within a first preset time, a manual cleaning prompt is output, and it is determined in real time whether feedback information from the user based on the manual cleaning prompt is obtained within a second preset time. If no feedback information from the user based on the manual cleaning prompt is obtained within the second preset time, a cleaning command is output to control the output control submodule to conduct the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time, executing the steps of outputting the manual cleaning prompt and determining in real time whether feedback information from the user based on the manual cleaning prompt is obtained within the second preset time.

[0257] The manual cleaning prompt message indicates that the user should manually clean the vehicle, while the feedback message indicates the user's confirmation of using the manual cleaning mode after receiving the prompt. Muddy roads are different from ordinary roads; dirt easily adheres to the parts to be cleaned but is easy to remove. Frequent cleaning would waste cleaning resources. If the parts to be cleaned again meet the first preset dirt standard within a first preset time, it means that the parts will become dirty again shortly after cleaning on this muddy road. If automatic cleaning continues based on the dirt level, cleaning resources will be severely wasted. By prompting the user to switch to manual cleaning, the user can selectively clean according to their actual driving conditions, thus conserving resources.

[0258] In an optional embodiment of the present invention, determining the cleaning scheme based on the current road surface information includes:

[0259] Determine whether the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section.

[0260] If the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section, the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned. The sensing information of the component to be cleaned is acquired in real time, and based on the sensing information, it is determined whether the component to be cleaned meets the second preset dirt standard. If the component to be cleaned meets the second preset dirt standard, the liquid washing command is first output to control the output path corresponding to the component to be cleaned to output liquid to perform water washing of the component to be cleaned, and then the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned.

[0261] The perceived information refers to the information about the external environment sensed by the component to be cleaned. The second preset dirt standard refers to a pre-set standard that the perceived information of the component to be cleaned will meet when the component is relatively dirty and still needs cleaning. Preferably, in a specific embodiment, the component to be cleaned can be a camera, and the perceived information is the road surface image information acquired by the camera. The road surface image information is processed into grayscale, and the second preset dirt standard includes a second preset grayscale value. When the grayscale information obtained by grayscale processing the road surface image information is greater than the second preset grayscale value, it indicates that the component to be cleaned meets the second preset dirt standard.

[0262] On sandy and dusty roads, air can usually be used to blow away sand and dust to clean the parts to be cleaned. On wading roads, water may cause water to adhere to the parts to be cleaned, requiring air to dry them to prevent obstructing the user's vision. Therefore, when the current road surface information is at least one of sandy, dusty, and wading, the air washing command is first output to control the output channel corresponding to the parts to be cleaned to output air for pneumatic cleaning. If the parts to be cleaned are still dirty after pneumatic cleaning, they are then washed with water first and then pneumatic cleaning is performed. In this way, cleaning resources can be saved.

[0263] In optional embodiments of the present invention, such as Figure 11 As shown, determining the current road surface information includes:

[0264] S4121. Establish a road condition image recognition algorithm model.

[0265] S4122. Obtain current road surface image information.

[0266] S4123. Determine the current road surface information based on the current road surface image information and the road condition image recognition algorithm model.

[0267] The road condition image recognition algorithm model refers to a model capable of identifying road surface information based on road surface image information. The current road surface image information refers to the image of the road surface outside the vehicle. This image information can be acquired by the vehicle's built-in camera, which then sends it to the control module via the vehicle controller. Therefore, the current road surface information can be determined based on the current road surface image information and the road condition image recognition algorithm model.

[0268] Based on the above embodiments, such as Figure 12 As shown, the establishment of the road condition image recognition algorithm model includes:

[0269] S41211. Collect standard images of different road surfaces.

[0270] S41212. Train the model to obtain training parameters by performing model training on the standard images of different road surfaces.

[0271] S41213. Construct a road condition image recognition algorithm model based on the training parameters.

[0272] The road condition image recognition algorithm model can be a deep learning model. Standard road surface images refer to standard images of different road surfaces, such as bumpy roads, snowy roads, muddy roads, flooded roads, and sandy roads. By taking images of different road surfaces as standard road surface images, and then inputting them into the established initial model for training, training parameters can be obtained, which can then be used to construct the road condition image recognition algorithm model. Subsequently, only the current road surface image information needs to be input into the road condition image recognition algorithm model to determine the current road surface information.

[0273] In an optional embodiment of the present invention, before the step of controlling the output control submodule to turn on the output path to allow the nozzle to discharge liquid to clean the component to be cleaned when the intracavitary pressure information is the preset intracavitary pressure, the method further includes:

[0274] Obtain the current outside temperature. Determine if the current outside temperature is lower than a preset temperature threshold. If the current outside temperature is lower than the preset temperature threshold, control the heating module to start heating the parts to be cleaned. The preset temperature threshold is a pre-defined value that the outside temperature should be greater than. The current outside temperature refers to the ambient temperature outside the vehicle. Specifically, a temperature sensor can be installed outside the vehicle to detect the current outside temperature. When the current outside temperature is lower than the preset temperature threshold, it indicates that the outside temperature is too low, and the parts to be cleaned are likely covered in ice and snow. In this case, controlling the heating module to start heating the parts to be cleaned melts the ice and snow around them, allowing the parts to be cleaned after the ice and snow have melted, preventing incomplete cleaning.

[0275] In an optional embodiment of the present invention, the vehicle cleaning method further includes:

[0276] Acquire rainfall information detected by a rainfall sensor. Determine whether it is a rainy day based on the rainfall information. If it is a rainy day, determine whether the component to be cleaned is obstructed by an object. If the component to be cleaned is obstructed, output the air-washing command to control the output path corresponding to the component to be cleaned to release air for pneumatic cleaning, and determine in real time whether the cleaning effect of the component to be cleaned meets the preset cleaning effect. If the cleaning effect of the component to be cleaned does not meet the preset cleaning effect, output the liquid-washing command to control the output path corresponding to the component to be cleaned to release liquid first for water washing.

[0277] Rainfall detection components refer to parts that can monitor rainfall outside a vehicle. Rainfall information reflects whether it is raining and the amount of rainfall. Preferably, the rainfall detection component is a rain sensor, which is suitable for meteorological stations, hydrological stations, agriculture, forestry, national defense and other relevant departments to remotely measure liquid precipitation, precipitation intensity, and the start and end time of precipitation. It is also used in automatic hydrological monitoring systems and automatic field monitoring stations for flood control, water supply scheduling, and hydrological management of power station reservoirs, serving as a precipitation measurement sensor. A rain sensor is an infrared optical system with a light-emitting component that emits infrared light. When the glass surface is dry, almost 100% of the light is reflected back, allowing the sensor to receive a large amount of reflected light, and the system defaults to a sunny day. Therefore, the rain sensor can detect rainfall information. Specifically, the rainfall detection component is installed in the bracket position where the rearview mirror of the car fits against the windshield, thus facilitating the detection of rainfall information. The rainfall sensor can communicate directly with the control module to transmit rainfall information to the control module, or it can communicate with the vehicle controller to transmit rainfall information to the control module through the vehicle controller.

[0278] This system can acquire image information perceived by the component to be cleaned, and determine whether it is obstructed by an object based on this image information. For example, the image information can be processed into grayscale information, and the grayscale information can be used to determine whether it is obstructed by an object. Simultaneously, when the component to be cleaned is covered with dirt, due to varying degrees of dirt accumulation, the light transmittance of areas where dirt accumulates will be significantly reduced. The grayscale value of the pixels in the captured image will be smaller than that of clean areas, resulting in a whiter appearance on the image and a larger pixel grayscale value. Therefore, by analyzing the grayscale values ​​of each pixel in the image captured by the camera, the cleanliness or dirtiness of the camera surface can be evaluated, and the cleaning efficiency before and after cleaning can be analyzed. Thus, the cleaning effect of the component to be cleaned can be determined based on the grayscale information. For example, the preset cleaning effect includes a preset grayscale value; if the grayscale information is greater than the preset grayscale value, it is determined that the cleaning effect of the component to be cleaned does not meet the preset cleaning effect.

[0279] The above scheme enables the output of the air cleaning command to perform pneumatic cleaning of the component to be cleaned when the component to be cleaned is blocked by an obstruction, and the output of the command to perform water washing of the component to be cleaned when the cleaning effect is not good.

[0280] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0281] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A vehicle cleaning system for cleaning vehicle components, the vehicle cleaning system comprising a common rail module, a liquid storage tank, and nozzles, wherein the common rail module has a common rail cavity, the common rail cavity includes an inlet path and an outlet path, the outlet path being connected to the nozzles, the liquid storage tank has a liquid storage chamber for storing liquid, the common rail module further includes an input control submodule and an output control submodule, the input control submodule being used to control the opening and closing of the inlet path, and the number of output paths and the number of output control submodules are both multiple, and the multiple output control submodules are used to control the opening and closing of multiple output paths in a one-to-one correspondence; characterized in that, It also includes a pressure accumulator, a first pressure detection device, a power component, and a control module; The accumulator has an accumulator chamber, and the power unit has a liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid storage chamber, and the liquid outlet is connected to the accumulator chamber. The power unit is used to transport the liquid in the liquid storage chamber to the accumulator chamber. The accumulator chamber has a liquid supply port, which is connected to the liquid inlet path; The first pressure detection element is used to detect the pressure in the common rail cavity to obtain the cavity pressure information; The input terminal of the control module is electrically connected to the first pressure detection element, and the output terminal of the control module is electrically connected to both the power element and the output control submodule. The control module is used to acquire the intracavitary pressure information, control the working state of the power element based on the intracavitary pressure information and a preset intracavitary pressure, until the intracavitary pressure information is the preset intracavitary pressure, and control the output control submodule to open the output path when the intracavitary pressure information is the preset intracavitary pressure so that the nozzle outputs liquid to clean the component to be cleaned. The accumulator is mounted on the liquid storage tank; The volume of the accumulator chamber is determined by the following formula: ； Wherein, ΔV = the volume of liquid discharged or stored in the accumulator per second (L / s), P0 is the pre-charge medium pressure, P1 is the minimum working pressure of the accumulator, P2 is the maximum working pressure of the accumulator, and n is a variable exponent.

2. The vehicle cleaning system according to claim 1, characterized in that, The power component is an electric pump.

3. The vehicle washing system according to any one of claims 1 to 2, characterized in that, The common rail module also includes a pressure relief unit. The common rail cavity has a reflux outlet, the liquid storage tank has a reflux inlet, a reflux pipeline is provided between the reflux outlet and the reflux inlet, and they are connected through the reflux pipeline. The pressure relief unit is used to control the opening and closing of the reflux pipeline. And / or, the liquid storage cavity is provided with a liquid level detection device, which is used to detect the liquid level information of the liquid storage cavity; And / or, the vehicle cleaning system further includes an air supply module, and the common rail cavity further includes an air intake path; the air supply module is connected to the air intake path, the input control submodule is also used to control the opening and closing of the air intake path, and the control module is used to control the input control submodule, the output control submodule, the power component and the air supply module to switch the common rail cavity between liquid storage and gas storage.

4. The vehicle cleaning system according to claim 3, characterized in that, The vehicle includes a vehicle controller, and the common rail module further includes a communication module. The control module is electrically connected to the communication module, and the control module communicates with the vehicle controller through the communication module. And / or, the vehicle washing system further includes a heating module for heating the parts to be washed; And / or, the vehicle washing system further includes a rainfall detection element for detecting rainfall outside the vehicle to obtain rainfall information.

5. A vehicle, characterized in that, The vehicle includes a vehicle body, on which are provided components to be cleaned and a vehicle cleaning system according to any one of claims 1-4.

6. A vehicle cleaning method, characterized in that, The vehicle washing system applied to any one of claims 1-4, the vehicle washing method comprising: Obtain a cleaning instruction, the cleaning instruction including a liquid washing instruction; Based on the liquid wash command control input control submodule and power component, the common rail chamber and accumulator chamber are started to receive liquid; Determine whether the common rail chamber and the accumulator chamber are filled with liquid; If the common rail chamber and the accumulator chamber are filled with liquid, the pressure information inside the chamber is obtained, and the working state of the power component is controlled based on the pressure information inside the chamber and the preset pressure inside the chamber until the pressure information inside the chamber is the preset pressure inside the chamber. When the pressure information inside the chamber is the preset pressure inside the chamber, the output control submodule is turned on to enable the nozzle to discharge liquid to clean the component to be cleaned.

7. The vehicle cleaning method according to claim 6, characterized in that, The step of controlling the working state of the power component based on the intracavity pressure information and the preset intracavity pressure until the intracavity pressure information is the preset intracavity pressure includes: Compare the intracavitary pressure information with the preset intracavitary pressure; If the intracavitary pressure information is greater than the preset intracavitary pressure, the power component is controlled to reduce its rotation speed and the step of comparing the intracavitary pressure information with the preset intracavitary pressure is continued until the intracavitary pressure information is the preset intracavitary pressure. If the intracavitary pressure information is less than the preset intracavitary pressure, the power component is controlled to increase its rotational speed and continue to perform the step of comparing the intracavitary pressure information with the preset intracavitary pressure until the intracavitary pressure information is the preset intracavitary pressure.

8. The vehicle cleaning method according to claim 6, characterized in that, Before determining whether the common rail chamber and the accumulator chamber are filled with liquid, the method further includes: Obtain the liquid level information of the storage tank detected by the liquid level detection device; Accordingly, determining whether the common rail chamber and the accumulator chamber are filled with liquid includes: The amount of liquid reduction in the storage chamber is determined based on the liquid level information; Determine whether the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber; If the amount of liquid reduction is greater than the sum of the volumes of the common rail chamber and the accumulator chamber, then the common rail chamber and the accumulator chamber are determined to be filled with liquid. If the amount of liquid reduction is not greater than the sum of the volumes of the common rail cavity and the accumulator cavity, it is determined that the common rail cavity and the accumulator cavity are not filled with liquid; After determining that the common rail chamber and the accumulator chamber are filled with liquid, the method further includes: controlling the pressure relief unit to close the return pipeline.

9. The vehicle cleaning method according to any one of claims 6 to 8, characterized in that, The cleaning command also includes an air washing command, and after obtaining the cleaning command, the process further includes: Based on the gas washing command control input control submodule and the air supply module, the common rail cavity starts to intake air through the air intake path; Determine whether the common rail chamber and the accumulator chamber are filled with gas; If the common rail chamber and the accumulator chamber are filled with gas, the pressure relief unit is controlled to close the return pipeline, and the output control submodule is controlled to open the output path so that the nozzle can release gas to clean the component to be cleaned.

10. The vehicle cleaning method according to claim 9, characterized in that, Before determining whether the common rail cavity and the accumulator cavity are filled with gas, the method further includes: Obtain the liquid level information of the storage tank detected by the liquid level detection device; Accordingly, determining whether the common rail cavity and the accumulator cavity are filled with gas includes: The amount of liquid added to the storage chamber is determined based on the liquid level information; Determine whether the increase in liquid volume is greater than the sum of the volumes of the accumulator chamber and the common rail chamber; If the increase in liquid volume is greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are filled with gas. If the increase in liquid volume is not greater than the sum of the volumes of the accumulator chamber and the common rail chamber, it is determined that the accumulator chamber and the common rail chamber are not filled with gas.

11. The vehicle cleaning method according to any one of claims 6 to 8, characterized in that, The vehicle cleaning method also includes: Obtain vehicle status signals sent by the vehicle controller; The cleaning plan is determined based on the vehicle status signal.

12. The vehicle cleaning method according to claim 11, characterized in that, The component to be cleaned includes at least one of a rearview camera and a rear-side radar; the vehicle status signal includes a vehicle driving signal; and determining the cleaning scheme based on the vehicle status signal includes: Determine whether the vehicle is reversing based on the vehicle driving signal; If it is determined that the vehicle is reversing, the cleaning command is output to control the output control submodule corresponding to the rearview camera and / or the rear radar to turn on the corresponding output path to clean the rearview camera and the rear radar.

13. The vehicle cleaning method according to claim 12, characterized in that, The component to be cleaned includes at least one of a side camera, a side radar, a side-view camera, and a side radar. The vehicle status signal also includes a vehicle speed signal. Determining a cleaning plan based on the vehicle status signal includes: Determine whether the vehicle is moving forward based on the vehicle driving signal; If the vehicle is moving forward, determine whether the vehicle speed is greater than a preset speed threshold based on the vehicle speed signal; If the vehicle speed is greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar; If the vehicle speed is not greater than the preset speed threshold, the cleaning command is output to control the output control submodule corresponding to the side camera and / or the side radar to turn on the corresponding output path to clean the side camera and / or the side radar.

14. The vehicle cleaning method according to claim 10, characterized in that, The component to be cleaned further includes a main cleaning component and a secondary cleaning component; the vehicle cleaning method further includes: Based on the liquid level information, determine whether the water volume in the storage chamber is sufficient; If the water volume in the storage chamber is insufficient, the air washing command is output to control the output path corresponding to the secondary cleaning component to output air for pneumatic cleaning of the secondary cleaning component. Then, the liquid washing command is output to control the output path corresponding to the main cleaning component to output liquid for water washing of the main cleaning component. Finally, the air washing command is output to control the output path corresponding to the main cleaning component to output air for pneumatic cleaning of the main cleaning component.

15. The vehicle cleaning method according to claim 9, characterized in that, The vehicle cleaning method also includes: Determine the current road surface information; A cleaning plan is determined based on the current road surface information.

16. The vehicle cleaning method according to claim 15, characterized in that, The step of determining a cleaning plan based on the current road surface information includes: Determine whether the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section; If the current road surface information is at least one of sandy road section, dusty road section, and water-crossing road section, the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned. The sensing information of the component to be cleaned is acquired in real time, and based on the sensing information, it is determined whether the component to be cleaned meets the second preset dirt standard. If the component to be cleaned meets the second preset dirt standard, the liquid washing command is first output to control the output path corresponding to the component to be cleaned to output liquid to perform water washing of the component to be cleaned, and then the air washing command is output to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned.

17. The vehicle cleaning method according to claim 15, characterized in that, The step of determining a cleaning plan based on the current road surface information includes: Determine whether the current road surface information indicates a muddy section; If the current road surface information is a muddy section, the sensing information of the component to be cleaned is acquired in real time. Based on the sensing information, it is determined whether the component to be cleaned meets the first preset dirt standard. If the component to be cleaned meets the first preset dirt standard, the current cleaning pressure is reduced from the standard cleaning pressure to the first cleaning pressure, the current cleaning time is reduced from the standard cleaning time to the first cleaning time, and the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time. If the component to be cleaned does not meet the first preset dirt standard, it is determined in real time whether the current road surface information is not a muddy section. If the current road surface information is not a muddy section, the cleaning command is output to control the output control submodule to open the corresponding output path and clean the component to be cleaned with the standard cleaning time and the standard cleaning pressure.

18. The vehicle cleaning method according to claim 17, characterized in that, After the step of controlling the output control submodule to turn on the corresponding output path and clean the component to be cleaned according to the current cleaning pressure and the current cleaning time, the method further includes: Determine whether the component to be cleaned meets the first preset dirt standard again within a first preset time period; If the component to be cleaned again meets the first preset dirt standard within a first preset time, a manual cleaning prompt is output, and it is determined in real time whether feedback information from the user based on the manual cleaning prompt is obtained within a second preset time. If no feedback information from the user based on the manual cleaning prompt is obtained within the second preset time, a cleaning command is output to control the output control submodule to conduct the corresponding output path and clean the component to be cleaned with the current cleaning pressure and the current cleaning time, executing the steps of outputting the manual cleaning prompt and determining in real time whether feedback information from the user based on the manual cleaning prompt is obtained within the second preset time.

19. The vehicle cleaning method according to any one of claims 15 to 18, characterized in that, Determining the current road surface information includes: Establish a road condition image recognition algorithm model; Obtain current road surface image information; The current road surface information is determined based on the current road surface image information and the road condition image recognition algorithm model.

20. The vehicle cleaning method according to claim 19, characterized in that, The established road condition image recognition algorithm model includes: Collect standard images of different road surfaces; Training parameters are obtained by training the model on the standard images of different road surfaces; A road condition image recognition algorithm model is constructed based on the training parameters.

21. The vehicle cleaning method according to any one of claims 6 to 8, characterized in that, Before the step of controlling the output submodule to activate the output path to allow the nozzle to dispense liquid for cleaning the component to be cleaned when the intracavitary pressure information is the preset intracavitary pressure, the method further includes: Get the current outside temperature; Determine whether the current outside temperature is lower than a preset temperature threshold; If the current outside temperature is lower than the preset temperature threshold, the heating module is activated to heat the parts to be cleaned.

22. The vehicle cleaning method according to claim 9, characterized in that, The vehicle cleaning method also includes: Acquire rainfall information obtained from rainfall measurement devices; Determine whether it is a rainy day based on the rainfall information; If it is a rainy day, determine whether the component to be cleaned is blocked by an obstruction. If the component to be cleaned is blocked by an obstruction, output the air cleaning command to control the output path corresponding to the component to be cleaned to output air to perform pneumatic cleaning of the component to be cleaned, and determine in real time whether the cleaning effect of the component to be cleaned meets the preset cleaning effect. If the cleaning effect of the component to be cleaned does not meet the preset cleaning effect, output the liquid cleaning command to control the output path corresponding to the component to be cleaned to output liquid first to perform water washing of the component to be cleaned.

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