CN117141419A

CN117141419A - Vehicle cleaning system and cleaning method

Info

Publication number: CN117141419A
Application number: CN202311183745.1A
Authority: CN
Inventors: 顾一新; 赵文彬; 黄孝驰; 许持华
Original assignee: Guangdong Zhengyang Sensor Technology Co ltd
Current assignee: Guangdong Zhengyang Sensor Technology Co ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2023-12-01

Abstract

The invention discloses a vehicle cleaning system and a vehicle cleaning method. The vehicle cleaning system comprises a common rail module, a liquid storage tank, a nozzle, a pressure storage piece, a first pressure detection piece, a power piece and a control module, wherein a common rail cavity is formed in the common rail module; the liquid supply port of the pressure accumulation cavity is communicated with the liquid inlet path; the output end of the control module is electrically connected with the power piece and the output control submodule, the control module is used for acquiring intra-cavity pressure information, controlling the working state of the power piece based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is preset intra-cavity pressure so as to enable the nozzle liquid to clean the part to be cleaned. By adopting the scheme, the problem that the cleaning effect is affected due to the fact that the spray cleaning pressure instantaneously drops when the existing cleaning system discharges liquid is solved.

Description

Vehicle cleaning system and cleaning method

Technical Field

The invention relates to the technical field of cleaning systems, in particular to a vehicle cleaning system and a vehicle cleaning method.

Background

With the increasing development of the intelligent driving industry and the increasing demand for driving safety, parts of the vehicle need to be cleaned to prevent the parts from being polluted to influence the driving safety, such as a camera, a radar, a front wiper, a rear wiper and the like on the vehicle, and if the vehicle is polluted, the vehicle is influenced, so that a cleaning system is required to be equipped on the vehicle for cleaning.

Chinese patent publication No. CN114798592a discloses a vehicle environment sensing part cleaning system, method and vehicle, as shown in fig. 1, the vehicle environment sensing part cleaning system includes a common rail module 1, a nozzle 2, a gas supply module 3, a liquid supply module 4 and a control module 5. A common rail cavity is arranged in the common rail module 1 and is provided 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 communicated with the liquid inlet path 11, and the air supply module 3 is communicated with the air inlet path 12. The common rail module 1 comprises a switch sub-module 15, and the switch sub-module 15 is used for controlling liquid inlet, liquid outlet and gas outlet of the liquid inlet channel 11, the gas inlet channel 12, the gas outlet channel 13 and the liquid outlet channel 14. The control module 5 is electrically connected with the switch sub-module 15, the liquid supply module 4 and the air supply module 3, and the control module 5 is used for controlling the common rail cavity to switch between liquid storage and air storage. The air outlet channel 13 and the liquid outlet channel 14 are both communicated with the nozzle 2, and the nozzle 2 is used for sequentially spraying liquid and gas in the common rail cavity to the environment sensing component for cleaning. The liquid outlet 14 comprises a plurality of liquid outlet branches 141, and the number of the nozzles 2 is a plurality.

According to the scheme, because the volume of the common rail cavity is smaller, when a plurality of nozzles 2 are discharged simultaneously, the output liquid quantity is far greater than the liquid quantity stored in the common rail cavity, the spray washing pressure can be caused to fall instantly, and then the cleaning effect can be influenced.

Disclosure of Invention

The invention provides a vehicle cleaning system and a vehicle cleaning method, which are used for solving the problem that the cleaning effect is affected due to the fact that the spray cleaning pressure instantaneously drops when the existing cleaning system discharges liquid.

According to an aspect of the present invention, there is provided a vehicle cleaning system for cleaning a component to be cleaned of a vehicle, the vehicle cleaning system including a common rail module, a liquid tank and a nozzle, wherein a common rail cavity is provided in the common rail module, the common rail cavity includes a liquid inlet path and an output path, the output path is communicated with the nozzle, the liquid tank has a liquid storage cavity, the liquid storage cavity is used for storing liquid, the common rail module further includes an input control sub-module and an output control sub-module, the input control sub-module is used for controlling on and off of the liquid inlet path, the number of the output path and the number of the output control sub-modules are all plural, and the plural output control sub-modules are used for controlling on and off of the plural output paths in one-to-one correspondence; the vehicle cleaning system further comprises a pressure storage part, a first pressure detection part, a power part and a control module;

The pressure accumulation member is provided with a pressure accumulation cavity, the power member is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid storage cavity, the liquid outlet is communicated with the pressure accumulation cavity, and the power member is used for conveying liquid in the liquid storage cavity to the pressure accumulation cavity;

the pressure accumulation cavity is provided with a liquid supply port, and the liquid supply port is communicated with the liquid inlet path;

the first pressure detection piece is used for detecting the pressure of the common rail cavity to obtain intra-cavity pressure information;

the input end of the control module is electrically connected with the first pressure detection part, the output end of the control module is electrically connected with the power part and the output control sub-module, the control module is used for acquiring intra-cavity pressure information, controlling the working state of the power part based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control sub-module to be conducted with the output path when the intra-cavity pressure information is the preset intra-cavity pressure so that the nozzle can be discharged to clean the part to be cleaned.

In an alternative embodiment of the invention, the pressure accumulating member is provided on the reservoir;

And/or the power piece is an electric pump.

In an alternative embodiment of the invention, the volume of the accumulator chamber is determined by the following formula:

where Δv=the volume (L/s) of liquid discharged or stored by the accumulator chamber per second, P0 is the pre-charge medium pressure, P1 is the minimum operating pressure of the accumulator chamber, P2 is the maximum operating pressure of the accumulator chamber, and n is a variable index.

In an alternative embodiment of the present invention, the common rail module further includes a pressure relief unit, the common rail cavity has a backflow liquid outlet, the liquid storage tank has a backflow liquid inlet, a backflow pipeline is arranged between the backflow liquid outlet and the backflow liquid inlet and is communicated with the backflow liquid inlet through the backflow pipeline, and the pressure relief unit is used for controlling the opening and closing of the backflow pipeline;

and/or a liquid level detection piece is arranged in the liquid storage cavity and is used for detecting liquid level information of the liquid storage cavity;

and/or, the vehicle cleaning system further comprises an air supply module, and the common rail cavity further comprises an air inlet channel; the air supply module is communicated with the air inlet path, the input control sub-module is further used for controlling the on-off of the air inlet path, and the control module is used for controlling the input control sub-module, the output control sub-module, the power piece and the air supply module so that the common rail cavity is switched between liquid storage and air storage.

In an alternative 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;

and/or the vehicle cleaning system further comprises a heating module for heating the component to be cleaned;

and/or, the vehicle cleaning system further comprises a rainfall detection part, wherein the rainfall detection part is used for detecting the rainfall outside the vehicle to obtain rainfall information.

According to another aspect of the present invention, there is provided a vehicle comprising a vehicle body on which a component to be cleaned and a vehicle cleaning system according to any one of the embodiments of the present invention are provided.

According to another aspect of the present invention, there is provided a vehicle cleaning method applied to the vehicle cleaning system according to any one of the embodiments of the present invention, the vehicle cleaning method including:

acquiring a cleaning instruction, wherein the cleaning instruction comprises a liquid cleaning instruction;

controlling an input control sub-module and a power piece based on the liquid washing instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding;

determining whether the common rail chamber and the accumulator chamber are full of liquid;

And if the common rail cavity and the pressure accumulation cavity are full of liquid, acquiring intra-cavity pressure information, controlling the working state of the power part based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned.

In an optional embodiment of the present invention, the controlling the working state of the power element based on the intra-cavity pressure information and a preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure includes:

comparing the intra-cavity pressure information with preset intra-cavity pressure;

if the intra-cavity pressure information is larger than the preset intra-cavity pressure, controlling the power piece to reduce the rotating speed, and continuously executing the step of comparing the intra-cavity pressure information with the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure;

and if the intra-cavity pressure information is smaller than the preset intra-cavity pressure, controlling the power piece to increase the rotating speed, and continuously executing the step of comparing the intra-cavity pressure information with the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure.

In an alternative embodiment of the present invention, before determining whether the common rail chamber and the accumulator chamber are full of liquid, the method further includes:

acquiring liquid level information of the liquid storage tank detected by the liquid level detection piece;

accordingly, the determining whether the common rail chamber and the accumulator chamber are full of liquid includes:

determining a liquid reduction amount of the liquid storage cavity based on the liquid level information;

determining whether the liquid reduction amount is greater than a sum of volumes of the common rail chamber and the accumulator chamber;

if the liquid reduction amount is larger than the sum of the volumes of the common rail cavity and the pressure accumulation cavity, determining that the common rail cavity and the pressure accumulation cavity are full of liquid;

determining that the common rail chamber and the accumulator chamber are not filled with liquid if the liquid reduction amount is not greater than the sum of the volumes of the common rail chamber and the accumulator chamber;

after the common rail chamber and the accumulator chamber are determined to be full of liquid, further comprising: and controlling the pressure relief unit to close the return pipeline.

In an optional embodiment of the present invention, the cleaning instruction further includes a gas cleaning instruction, and after the cleaning instruction is acquired, the method further includes:

the input control sub-module and the air supply module are controlled based on the air washing instruction to enable the common rail cavity to start air intake through the air inlet channel;

Determining whether the common rail chamber and the accumulator chamber are full of gas;

and if the common rail cavity and the pressure accumulation cavity are filled with gas, controlling the pressure relief unit to close the return pipeline, and controlling the output control sub-module to conduct the output path so as to enable the nozzle to give out gas to clean the part to be cleaned.

In an alternative embodiment of the present invention, before determining whether the common rail chamber and the accumulator chamber are full of gas, the method further includes:

accordingly, the determining whether the common rail chamber and the accumulator chamber are full of gas includes:

determining an increase in liquid in the liquid storage chamber based on the liquid level information;

determining whether the liquid increase is greater than a sum of volumes of the accumulator chamber and the common rail chamber;

if the liquid level increment is larger than the sum of the volumes of the pressure accumulation cavity and the common rail cavity, determining that the pressure accumulation cavity and the common rail cavity are full of gas;

and if the liquid level increment is not larger than the sum of the volumes of the pressure accumulation cavity and the common rail cavity, determining that the pressure accumulation cavity and the common rail cavity are not full of gas.

In an alternative embodiment of the present invention, the vehicle cleaning method further includes:

acquiring a vehicle state signal sent by a vehicle controller;

A washing protocol is determined based on the vehicle status signal.

In an alternative embodiment of the present invention, the component to be cleaned includes at least one of a rear-view camera and a rear-side radar, the vehicle status signal includes a vehicle running signal, and the determining a cleaning solution based on the vehicle status signal includes:

determining whether the vehicle is backing based on the vehicle travel signal;

and if the vehicle is determined to be in reverse, outputting the cleaning instruction to control the rearview camera and/or the output control sub-module corresponding to the rear-side radar to conduct the corresponding output path so as to clean the rearview camera and the rear-side radar.

In an alternative embodiment of the present invention, the component to be cleaned includes at least one of a lateral camera, a lateral radar, a lateral camera, and a lateral radar, the vehicle status signal further includes a vehicle speed signal, and the determining the cleaning solution based on the vehicle status signal includes:

determining whether the vehicle is traveling forward based on the vehicle travel signal;

if the vehicle is in forward motion, determining 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, outputting the cleaning instruction to control the corresponding output control sub-module of the lateral camera and/or the lateral radar to conduct the corresponding output path so as to clean the lateral camera and/or the lateral radar;

and if the vehicle speed is not greater than the preset speed threshold, outputting the cleaning instruction to control the corresponding output control sub-module of the side camera and/or the side Fang Leida to conduct the corresponding output path so as to clean the side camera and/or the side radar.

In an alternative embodiment of the present invention, the member to be cleaned further comprises a primary cleaning member and a secondary cleaning member; the vehicle cleaning method further includes:

determining whether the water volume in the liquid storage cavity is sufficient based on the liquid level information;

if the water volume in the liquid storage cavity is insufficient, outputting the air washing instruction to control the output path corresponding to the secondary washing component to give out air so as to carry out pneumatic washing on the secondary washing component, outputting the liquid washing instruction to control the output path corresponding to the main washing component to give out liquid so as to wash the main washing component, and then outputting the air washing instruction to control the output path corresponding to the main washing component to give out air so as to carry out pneumatic washing on the main washing component.

determining current road surface information;

a cleaning solution is determined based on the current road surface information.

In an alternative embodiment of the present invention, the determining a cleaning solution based on the current road surface information includes:

determining whether the current road surface information is at least one of a sand road section, a dust road section and a wading road section;

if the current road surface information is at least one of a sand road section, a dust road section and a wading road section, outputting the air washing instruction to control the output road corresponding to the to-be-washed component to give out air to pneumatically wash the to-be-washed component, acquiring the perception information of the to-be-washed component in real time, determining whether the to-be-washed component meets a second preset pollution standard based on the perception information, and if the to-be-washed component meets the second preset pollution standard, outputting the liquid washing instruction to control the output road corresponding to the to-be-washed component to give out air to wash the to-be-washed component and then outputting the air washing instruction to control the output road corresponding to the to-be-washed component to give out air to pneumatically wash the to-be-washed component.

determining whether the current road surface information is a muddy road section;

if the current road surface information is a muddy road section, sensing information of the to-be-cleaned part is obtained in real time, whether the to-be-cleaned part meets a first preset dirt standard is determined based on the sensing information, if the to-be-cleaned part 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 instruction is output to control the output control sub-module to conduct the corresponding output path and clean the to-be-cleaned part with the current cleaning pressure and the current cleaning time, if the to-be-cleaned part does not meet the first preset dirt standard, whether the current road surface information is not the muddy road section is determined in real time, and if the current road surface information is not the muddy road section, the cleaning instruction is output to control the output control sub-module to conduct the corresponding output path and clean the to-be-cleaned part with the standard cleaning time and the standard cleaning pressure.

In an optional embodiment of the present invention, after the controlling the output control sub-module turns on the corresponding output path and cleans the component to be cleaned with the current cleaning pressure and the current cleaning time, the method further includes:

determining whether the component to be cleaned meets the first preset dirt standard again within a first preset time;

outputting manual cleaning prompt information if the to-be-cleaned part meets the first preset dirt standard again in the first preset time, and determining whether feedback information fed back by a user based on the manual cleaning prompt information is acquired in the second preset time in real time, if feedback information fed back by the user based on the manual cleaning prompt information is not acquired in the second preset time, outputting the cleaning instruction to control the output control sub-module to conduct the corresponding output path, cleaning the to-be-cleaned part according to the current cleaning pressure and the current cleaning time, executing the step of outputting the manual cleaning prompt information, and determining whether feedback information fed back by the user based on the manual cleaning prompt information is acquired in the second preset time in real time.

In an alternative embodiment of the present invention, the determining the current road surface information includes:

establishing a road condition image recognition algorithm model;

acquiring current road surface image information;

and determining the current road surface information based on the current road surface image information and the road condition image recognition algorithm model.

In an optional embodiment of the invention, the establishing a road condition image recognition algorithm model includes:

collecting road surface standard images of different road surfaces;

model training is carried out on the road surface standard images of different road surfaces to obtain training parameters;

and constructing a road condition image recognition algorithm model based on the training parameters.

In an optional embodiment of the present invention, before the controlling the output control submodule to conduct the output path to enable the nozzle to discharge liquid to clean the component to be cleaned when the intra-cavity pressure information is the preset intra-cavity pressure, the method further includes:

acquiring the current temperature outside the vehicle;

determining whether the current outside temperature is lower than a preset temperature threshold;

and if the current temperature outside the vehicle is lower than the preset temperature threshold, controlling a heating module to start so as to heat the part to be cleaned.

Acquiring rainfall information obtained by detection of the rainfall detection part;

determining whether it is rainy days based on the rainfall information;

if the cleaning effect of the part to be cleaned does not meet the preset cleaning effect, the liquid washing instruction is output to control the output path corresponding to the part to be cleaned to be discharged first to wash the part to be cleaned.

According to the technical scheme, through the arrangement of the pressure accumulation cavity and the first pressure detection piece, the control module can acquire the intra-cavity pressure information detected by the first pressure detection piece, control the working state of the power piece based on the intra-cavity pressure information and the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and control the output control submodule to conduct the output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to discharge liquid to clean the part to be cleaned. Therefore, the pressure accumulation cavity can provide a large amount of pressure instantly, pressure is stabilized, when a plurality of output channels are conducted to carry out liquid discharging, the pressure accumulation cavity can keep constant pressure and output stably, instant pressure drop caused by small storage flow of the existing common rail cavity is made up, and the problem that the cleaning effect is influenced due to instant drop of spray cleaning pressure when the existing cleaning system discharges liquid is solved. Meanwhile, due to the pressure accumulation function of the pressure accumulation cavity, even if the power piece does not work, the liquid amount stored in the pressure accumulation cavity can also be used for the common rail module to clean the parts to be cleaned for a small number of times, a certain amount of liquid can be provided when the power piece fails, the pressure accumulation cavity can be used for emergency, and the situation that potential safety hazards are caused when the power piece fails and the parts to be cleaned are difficult to clean is prevented.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a related art vehicle environment sensing component cleaning system;

FIG. 2 is a schematic diagram of a vehicle cleaning system according to an embodiment of the present invention;

FIG. 3 is a circuit block diagram of a vehicle cleaning system according to a first embodiment of the present invention;

FIG. 4 is a cross-sectional view of a reservoir and accumulator provided in accordance with a first embodiment of the present invention;

fig. 5 is a schematic diagram of connection between a gas supply module and a liquid supply module and a common rail module according to a first embodiment of the present invention;

FIG. 6 is a block diagram of a vehicle cleaning system and vehicle controller connection according to a first embodiment of the present invention;

FIG. 7 is a flow chart of a vehicle cleaning method according to a third embodiment of the present invention;

FIG. 8 is a flow chart of a vehicle cleaning method according to a fourth embodiment of the present invention;

FIG. 9 is a flow chart of a vehicle cleaning method according to a fifth embodiment of the present invention;

FIG. 10 is a flowchart of a vehicle cleaning method according to a sixth embodiment of the present invention;

FIG. 11 is a flowchart for determining current road surface information according to a sixth embodiment of the present invention;

fig. 12 is a flowchart for establishing a road condition image recognition algorithm model according to the sixth embodiment of the present invention.

Wherein: 1. a common rail module; 11. a liquid inlet path; 12. an output path; 121. an air outlet path; 122. a liquid outlet channel; 13. an input control sub-module; 14. an output control sub-module; 15. a pressure relief unit; 16. an air inlet path; 2. a liquid storage tank; 21. a liquid level detecting member; 22. a liquid storage cavity; 3. a nozzle; 4. a pressure storage member; 41. a pressure accumulation cavity; 5. a first pressure detecting member; 6. a control module; 7. a power member; 8. a return line; 9. a gas supply module; 91. an air pump; 92. a gas storage tank; 93. a second pressure detecting member; 10. a communication module; 20. a heating module; 30. a rainfall detection member; 40. and the whole vehicle controller.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 2 is a schematic structural diagram of a vehicle cleaning system according to a first embodiment of the present invention, fig. 3 is a circuit block diagram of a vehicle cleaning system according to a first embodiment of the present invention, and fig. 4 is a sectional view of a liquid storage tank 2 and a pressure accumulating member 4 according to a first embodiment of the present invention; the present embodiment is applicable to a case of cleaning a part to be cleaned of a vehicle including at least one of a camera, a radar, a front wiper, and a rear wiper, and as shown in fig. 2 to 4, the vehicle cleaning system includes a common rail module 1, a liquid storage tank 2, an accumulator 4, a first pressure detecting member 5, a power member 7, a control module 6, and a nozzle 3.

The common rail module 1 is internally provided with a common rail cavity, the common rail cavity comprises a liquid inlet path 11 and an output path 12, the output path 12 is communicated with the nozzle 3, the liquid storage tank 2 is provided with a liquid storage cavity 22, the liquid storage cavity 22 is used for storing liquid, the common rail module 1 further comprises an input control sub-module 13 and an output control sub-module 14, the input control sub-module 13 is used for controlling the quantity of the liquid inlet path 11 to be multiple in turn on and turn off, the quantity of the output paths 12 and the output control sub-modules 14 are multiple, and the multiple output control sub-modules 14 are used for controlling the on and turn off of the multiple output paths 12 in a one-to-one correspondence mode.

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 channel 11 refers to a channel of the common rail cavity for liquid inlet, the output channel 12 refers to a channel of liquid or gas in the common rail cavity for output, the input control sub-module 13 refers to a component for controlling the on and off of the liquid inlet channel 11, when the liquid inlet channel 11 is on, the common rail cavity can input liquid through the liquid inlet channel 11, and when the liquid inlet channel 11 is off, the common rail cavity cannot input liquid through the liquid inlet channel 11. Preferably, the input control submodule 13 is an electromagnetic valve, and the electromagnetic valve can conveniently control the on and off of the liquid inlet path 11. The output control sub-module 14 is a component for controlling the on and off of the output path 12, and when the output path 12 is on, the liquid in the common rail chamber can be ejected from the nozzle 3 through the output path 12. The plurality of output control sub-modules 14 are used for controlling the on-off of the plurality of output paths 12 in a one-to-one correspondence manner, namely, each output control sub-module 14 is used for controlling the on-off of one output path 12, meanwhile, the number of the nozzles 3 is the same as that of the output paths 12 and in one-to-one correspondence manner, different nozzles 3 can face different parts to be cleaned, and therefore when the different output paths 12 are conducted, different nozzles 3 can discharge liquid to clean different parts to be cleaned. Preferably, the output control submodule 14 is a solenoid valve, and the solenoid valve can conveniently control the on and off of the output path 12.

The pressure accumulating part 4 is provided with a pressure accumulating cavity 41, the power part 7 is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid accumulating cavity 22, the liquid outlet is communicated with the pressure accumulating cavity 41, and the power part 7 is used for conveying liquid in the liquid accumulating cavity 22 to the pressure accumulating cavity 41. The pressure accumulating member 4 is a member capable of outputting liquid at a constant pressure, the pressure accumulating chamber 41 is a space for storing liquid capable of outputting liquid at a constant pressure, the power member 7 is a member capable of supplying power for transporting liquid, preferably, the power member 7 is an electric pump which can conveniently transport the liquid in the liquid accumulating chamber 22 to the pressure accumulating chamber 41. In addition, since the pressure accumulation chamber 41 is connected to the liquid outlet of the electric pump, a certain buffering effect can be achieved.

The accumulator chamber 41 has a liquid supply port that communicates with the liquid intake passage 11, and since the liquid supply port communicates with the liquid intake passage 11, the liquid stored in the accumulator chamber 41 can enter the common rail chamber through the liquid supply port via the liquid intake passage 11.

The first pressure detecting element 5 is used for detecting the pressure of the common rail cavity to obtain the intra-cavity pressure information, wherein the first pressure detecting element 5 is a component capable of detecting the pressure of the common rail cavity. In a specific embodiment, the first pressure detecting member 5 may include a pressure sensor, and a detecting portion of the pressure sensor may be provided in the common rail chamber, so that the pressure level inside the common rail chamber can be detected. The intra-cavity pressure information is information reflecting the pressure in the common rail cavity.

The input end of the control module 6 is electrically connected with the first pressure detection part 5, the output end of the control module 6 is electrically connected with the power part 7 and the output control submodule 14, the control module 6 is used for acquiring intra-cavity pressure information, controlling the working state of the power part 7 based on the intra-cavity pressure information and the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule 14 to conduct the output path 12 when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle 3 to discharge liquid to clean the part to be cleaned.

The power unit 7 can convey the liquid in the liquid storage chamber 22 to the pressure storage chamber 41, and since the liquid supply port of the pressure storage chamber 41 is communicated with the liquid inlet path 11, the liquid in the pressure storage chamber 41 is conveyed to the common rail chamber at this time, and the pressure in the common rail chamber is the same as the pressure in the pressure storage chamber 41 at this time. During operation of the power element 7, when the operating states of the power element 7 are different, the pressure values of the common rail chamber and the accumulator chamber 41 are different, that is, the intra-chamber pressure information is different. For example, the higher the rotational speed of the power member 7, the greater the intra-cavity pressure information will be, and the lower the rotational speed of the power member 7, the lower the intra-cavity pressure information will be. The preset intra-cavity pressure is a value to be reached by the pressure of the common rail cavity at the time of cleaning preset in advance. By controlling the working state of the power member 7 based on the intra-cavity pressure information and the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, the pressure can be stabilized, and when the output path 12 is conducted to discharge liquid through the nozzle 3, the pressure accumulation cavity 41 can keep constant pressure and stably output, so that the instant pressure drop caused by the small storage flow of the existing common rail cavity is compensated.

According to the scheme, through the arrangement of the pressure accumulation cavity 41 and the first pressure detection piece 5, the control module 6 can acquire the intra-cavity pressure information detected by the first pressure detection piece 5, control the working state of the power piece 7 based on the intra-cavity pressure information and the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and control the output control sub-module 14 to conduct the output channel 12 when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle 3 to discharge liquid to clean the part to be cleaned. So the pressure accumulation cavity 41 can provide a large amount of pressure in the twinkling of an eye, stable pressure, when a plurality of output ways 12 switch on and go out the liquid, the pressure accumulation cavity 41 can keep the steady output of constant voltage, makes up the current common rail chamber because of the little instantaneous pressure drop that arouses of own storage flow, has solved the problem that spray rinsing pressure drops in the twinkling of an eye when current cleaning system goes out and leads to the cleaning performance to receive the influence. Meanwhile, due to the pressure accumulation function of the pressure accumulation cavity 41, even if the power piece 7 does not work, the liquid amount stored in the pressure accumulation cavity 41 can also be used for the common rail module 1 to clean the parts to be cleaned for a small number of times, a certain amount of liquid can be provided when the power piece 7 fails, the pressure accumulation cavity can be used for emergency, and the situation that potential safety hazards are caused when the power piece 7 fails and the parts to be cleaned are difficult to clean is prevented.

In an alternative embodiment of the invention, the control module 6 is specifically configured to:

comparing the intra-cavity pressure information with a preset intra-cavity pressure.

If the intra-cavity pressure information is larger than the preset intra-cavity pressure, controlling the power piece 7 to reduce the rotating speed and continuously executing the step of comparing the intra-cavity pressure information with the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure.

If the intra-cavity pressure information is smaller than the preset intra-cavity pressure, controlling the power piece 7 to increase the rotating speed and continuously executing the step of comparing the intra-cavity pressure information with the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure.

Wherein, when the rotation speed of the power member 7 decreases, the pressure applied to the pressure accumulation chamber 41 is small, so the pressure in the pressure accumulation chamber 41 and the common rail chamber decreases, that is, the intra-chamber pressure information decreases; when the rotation speed of the power element 7 increases, the pressure applied to the accumulator chamber 41 is large, so the pressures of the accumulator chamber 41 and the common rail chamber increase, that is, the intra-chamber pressure information increases. Therefore, the control device 7 can control the rotation speed to be reduced when the intra-cavity pressure information is larger than the preset intra-cavity pressure, and control the rotation speed to be increased when the intra-cavity pressure information is smaller than the preset intra-cavity pressure, so that the intra-cavity pressure information can be maintained at the preset intra-cavity pressure.

Preferably, the vehicle cleaning system further comprises a PID controller, the difference value between the intra-cavity pressure information and the preset intra-cavity pressure is used as an input quantity to be input into the PID controller, the output quantity of the PID controller is the rotating speed of the power piece 7, and the rotating speed of the power piece 7 can be adjusted according to the difference value between the intra-cavity pressure information and the preset intra-cavity pressure through the PID controller, so that the intra-cavity pressure information is maintained at the preset intra-cavity pressure, the power consumption is saved, and the service life is prolonged.

In an alternative embodiment of the invention, as shown in fig. 2 and 4, the pressure accumulating member 4 is provided on the reservoir 2. Therefore, extra space is not increased, and the vehicle model is convenient to match. For example, the pressure reservoir 4 may be integral with the reservoir 2 so that no additional space is added. The pressure accumulation cavity 41 can be made by using the marginal space near the liquid storage tank 2, so that the space is not increased and the vehicle type can be matched. In another embodiment, the pressure accumulating member 4 may be externally arranged and separated from the liquid storage tank 2, which is not particularly limited herein, but is exemplified.

In addition, since the pressure accumulation chamber 41 is connected to the rear of the power member 7, it is possible to perform a buffering function, and thus the size of the pressure accumulation chamber 41 can be calculated according to the flow rate of the power member 7. Meanwhile, the capacity of the accumulator 41 may be determined according to the injection amount of the nozzle 3 per unit time and the time to be maintained, and there is no direct relationship between the capacity of the accumulator 41 and the pressure, but the two complement each other, and in a specific embodiment, the capacity of the accumulator 41 is determined by the following formula:

Where Δv=the volume (L/s) of the liquid discharged or stored by the accumulator chamber 41 per second, P0 is the pre-charge medium pressure, P1 is the minimum operating pressure of the accumulator chamber 41, P2 is the maximum operating pressure of the accumulator chamber 41, and n is the variable index.

The pre-charge medium pressure refers to a certain set pressure reached by the pressure accumulating cavity 41 filled with a certain amount of medium in advance, specifically, the medium filled in advance may be air, and the pre-charge medium pressure is generally in a certain proportional relationship with the maximum working pressure. n is a variable index, where n=1 at isothermal and n=1.4 if adiabatic.

The following describes how the volume of the accumulator chamber 41 is calculated specifically from the formula in one specific example:

p2 is considered as a lift 100m (1m=0.1 bar), so p2=10bar, and p1=7bar because the pressure fluctuation is less than or equal to 3 bar/s; p0=60% of maximum operating pressure p2°, so p0=6 bar; because of isothermal, n=1; deltaV is 0.576m3/h per flow (8-way), i.e. 0.00016m3/s. Considering the standby pump start time to be 5s, Δv=0.0008m3, i.e. 0.8L; and finally, calculating: v0=3.1l. I.e. 3.1L of accumulator 41 is selected.

In an alternative embodiment of the present invention, as shown in fig. 2 and 5, the common rail module 1 further includes a pressure relief unit 15, the common rail cavity has a backflow liquid outlet, the liquid storage tank 2 has a backflow liquid inlet, a backflow pipeline 8 is disposed between the backflow liquid outlet and the backflow liquid inlet and is communicated through the backflow pipeline 8, and the pressure relief unit 15 is used for controlling the opening and closing of the backflow pipeline 8; the pressure relief unit 15 is a unit capable of controlling the opening and closing of the return line 8, and in a specific embodiment, the pressure relief unit 15 may include a solenoid valve. When the return line 8 is opened, the common rail cavity is communicated with the liquid storage tank 2, so that the pressure in the common rail cavity can be released, and the pressure relief function is realized. Meanwhile, the liquid in the common rail cavity can also flow back into the liquid storage tank 2 through the return pipeline 8, so that the waste of the liquid is effectively prevented.

In an alternative embodiment of the present invention, as shown in fig. 2 and 6, a liquid level detecting member 21 is provided in the liquid storage chamber 22, and the liquid level detecting member 21 is used for detecting liquid level information of the liquid storage chamber 22. Wherein, the liquid level information is information capable of reflecting the liquid level height, the liquid level detecting member 21 is a member capable of detecting the liquid level, in a specific embodiment, the liquid level detecting member 21 may be a liquid level sensor, and the liquid level sensor is disposed inside the liquid storage tank 2, so that the liquid level height inside the liquid storage tank 2 can be detected. The control module 6 is electrically connected with the liquid level detecting member 21, so that the control module 6 can acquire the liquid level information detected by the liquid level detecting member 21, and further can be convenient to know whether the common rail cavity and the pressure accumulation cavity 41 are full of liquid. For example, by detecting the liquid level information of the tank 2 before the injection of the liquid and the liquid level information of the tank 2 when the common rail chamber and the accumulator chamber 41 are filled with the liquid, it is indicated that the common rail chamber is highly likely to be filled with the liquid when the liquid level of the tank 2 decreases by more than the total volume of the common rail chamber and the accumulator chamber 41 is the same.

In an alternative embodiment of the invention, as shown in fig. 2 and 5, the vehicle washing system further comprises an air supply module 9, the common rail chamber further comprising an air intake 16; the air supply module 9 is communicated with the air inlet channel 16, the input control sub-module 13 is also used for controlling the on-off of the air inlet channel 16, and the control module 6 is used for controlling the input control sub-module 13, the output control sub-module 14, the power piece 7 and the air supply module 9 so as to enable the common rail cavity to be switched between liquid storage and air storage. The gas supply module 9 is a module capable of supplying gas, and since the gas supply module 9 communicates with the gas inlet passage 16, the gas supplied from the gas supply module 9 can enter the common rail chamber. So that the gas supplied from the gas supply module 9 can enter the common rail chamber when the gas inlet channel 16 is on, and the gas supplied from the gas supply module 9 cannot enter the common rail chamber when the gas inlet channel 16 is off. When the input control submodule 13 controls the air inlet channel 16 to be connected with the liquid inlet channel 11 to be disconnected and the pressure relief unit 15 to be connected with the return pipeline 8, gas enters the common rail cavity, and redundant liquid is discharged, so that the common rail cavity can be switched from liquid storage to gas storage. When the input control submodule 13 controls the air inlet channel 16 to switch off the liquid inlet channel 11 to be conducted and the pressure relief unit 15 to switch on the return pipeline 8, liquid enters the common rail cavity, and redundant gas is discharged, so that the inside of the common rail cavity can be switched from gas storage to liquid storage. Preferably, in a specific embodiment, the input control submodule 13 includes two solenoid valves, one for controlling the on and off of the intake passage 16, and the other for controlling the on and off of the intake passage 11.

Preferably, the air supply module 9 comprises an air pump 91 and an air storage tank 92, the air storage tank 92 is provided with an air supply port, the air supply port is communicated with the air inlet channel 16, the air pump 91 is connected with the air storage tank 92, and the air pump 91 is used for controlling the air storage tank 92 to supply air to the air inlet channel 16; the air pump 91 is electrically connected with the control module 6, and the control module 6 is used for controlling the working state of the air pump 91. The air tank 92 is a container in which air is stored, the air pump 91 is a member capable of compressing air into the air tank 92, and the operation state of the air pump 91 is whether the air pump 91 is started or stopped, and may include the rotation speed of the air pump 91. By providing the air pump 91 and the air tank 92, air can be conveniently supplied to the air inlet path 16 when air supply is required.

On the basis of the above embodiment, the vehicle cleaning system further includes a second pressure detecting member 93, the second pressure detecting member 93 being configured to detect the air pressure of the air tank 92; the control module 6 is electrically connected to the second pressure detecting member 93 for acquiring the air pressure of the air tank 92. The second pressure detecting member 93 is a member capable of detecting air pressure, and in a specific embodiment, the second pressure detecting member 93 is a pressure sensor, and the detecting portion of the pressure sensor is located inside the air tank 92, so that air pressure of the air tank 92 can be detected. The control module 6 can also control the working state of the air pump 91, and when the working state of the air pump 91 changes, the air pressure inside the air tank 92 will also change, so the control module 6 can maintain the air pressure inside the air tank 92 at a specific value by obtaining the air pressure data of the air tank 92 detected by the second pressure detecting member 93 and then controlling the working state of the air pump 91.

Preferably, the output path 12 may include a liquid outlet path 122 and a liquid outlet path 121, and the liquid outlet path 121 and the liquid outlet path 122 are both communicated with the nozzle 3, and the nozzle 3 is used for sequentially spraying the liquid and the gas in the common rail cavity to the component to be cleaned for cleaning. Since the gas outlet passage 121 and the liquid outlet passage 122 are both communicated with the nozzle 3, when the common rail cavity is filled with liquid, the liquid can be sprayed out of the nozzle 3 through the liquid outlet passage 122, but when the common rail cavity is filled with gas, the gas can be sprayed out of the nozzle 3 through the gas outlet passage 121, so that the nozzle 3 can sequentially spray the liquid and the gas in the common rail cavity to the part to be cleaned for cleaning. The structure of the nozzle 3 can be various, for example, a liquid spraying port and a gas spraying port are formed in the nozzle 3, the liquid spraying port is communicated with a liquid inlet connector, a liquid outlet 122 is communicated with the liquid inlet connector, a gas supply connector is connected to the rear end of the gas spraying port, and a gas outlet 121 is communicated with the gas supply connector, so that the nozzle 3 can spray liquid through the liquid spraying port to flush the part to be cleaned and blow the part to be cleaned through the gas spraying port. In another specific embodiment, the nozzle 3 has a spray hole, the spray hole is communicated with an inlet joint, and the liquid outlet 122 and the liquid outlet 121 are both communicated with the inlet joint, so that the nozzle 3 can spray liquid through the spray hole to wash the part to be cleaned and blow-dry the part to be cleaned through the spray hole.

Preferably, the output control sub-module 14 includes two solenoid valves, one solenoid valve is used to control the on and off of the liquid outlet 122, and the other solenoid valve is used to control the on and off of the liquid outlet 121.

In an alternative embodiment of the present invention, as shown in fig. 6, the vehicle includes a vehicle controller 40, the common rail module 1 further 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 refers to an electronic device that controls the entire vehicle system. The system is responsible for monitoring, controlling and adjusting the running states of various parts of the automobile so as to ensure the normal running and the safety of the automobile. The communication module 10 is a module that enables the control module 6 to communicate with the vehicle controller 40, and preferably, the communication module 10 includes one of the CAN communication module 10 and the LIN communication module 10. In this way, the control module 6 can conveniently communicate with the vehicle controller 40, and the control module 6 can clean the parts to be cleaned according to the state of the vehicle.

In an alternative embodiment of the invention, the vehicle cleaning system further comprises a heating module 20, the heating module 20 being adapted to heat the component to be cleaned; the heating module 20 is a module capable of heating a component to be cleaned, and the component to be cleaned may be disposed in a heating area of the heating module 20, so that the component to be cleaned may be heated conveniently. Preferably, the heating module 20 may be a PTC heater, and the structure of the heating module 20 may be various as long as the heating function can be achieved, and is not particularly limited herein.

In an alternative embodiment of the present invention, the vehicle washing system further includes a rainfall detection member 30, and the rainfall detection member 30 is configured to detect rainfall outside the vehicle to obtain rainfall information. The rainfall detection device 30 is a device capable of detecting the rainfall outside the vehicle, and the rainfall information is information reflecting whether the vehicle is raining or not and the amount of the rainfall. Preferably, the rainfall detecting member 30 is a rainfall sensor, and the rainfall sensor is suitable for relevant departments such as weather stations (stations), hydrologic stations, agriculture and forestry, national defense and the like to remotely measure the precipitation amount, the precipitation intensity and the precipitation start-stop time of the liquid. The system is used for controlling flood, dispatching water supply, and controlling reservoir water conditions of a power station. The rainfall sensor is an optical system in an infrared band, a light emitting component is responsible for emitting infrared rays, when the surface of the glass is dry, almost 100 percent of the light rays are reflected back, so that the sensor can receive a lot of reflected light rays, and the system defaults to a sunny day. The rainfall sensor is able to detect rainfall information. Specifically, the rainfall detection member 30 is disposed at a bracket position where the rear view mirror and the front glass of the automobile are attached to each other, so that rainfall information can be detected conveniently. The rainfall detection part 30 can be directly communicated with the control module 6 to transmit rainfall information to the control module 6, and can also be communicated with the whole vehicle controller 40 to transmit the rainfall information to the control module 6 through the whole vehicle controller 40.

Example two

The second embodiment of the invention provides a vehicle, which comprises a vehicle body, wherein a part to be cleaned and the vehicle cleaning system of any embodiment of the invention are arranged on the vehicle body.

The vehicle cleaning system is arranged on the vehicle, so that the problem that the cleaning parts are inconvenient to wipe in the running process of the vehicle and the running safety of the vehicle is easily affected is solved, and the safety in the running process of the vehicle is improved.

In an alternative embodiment of the invention, the vehicle comprises a whole vehicle controller, and the vehicle cleaning system comprises a control module and a communication module, wherein the control module is communicated with the whole vehicle controller through the communication module. The vehicle controller refers to electronic equipment for controlling the whole vehicle system. The system is responsible for monitoring, controlling and adjusting the running states of various parts of the automobile so as to ensure the normal running and the safety of the automobile. Through the mode, the control module can conveniently communicate with the whole vehicle controller, and the control module can clean the parts to be cleaned according to the state of the automobile.

Example III

Fig. 7 is a flowchart of a vehicle cleaning method according to a third embodiment of the present invention, where the vehicle cleaning method is applied to the vehicle cleaning system according to any one of the embodiments of the present invention, and the vehicle cleaning method may be implemented in hardware and/or software, and the vehicle cleaning method is executed by a control module of the vehicle cleaning system. As shown in fig. 7, the vehicle cleaning method includes:

S110, acquiring a cleaning instruction, wherein the cleaning instruction comprises a liquid cleaning instruction.

The cleaning instruction is an instruction for instructing the vehicle cleaning system to clean the part to be cleaned, and the liquid cleaning instruction is an instruction for instructing the vehicle cleaning system to clean the part to be cleaned by liquid.

And S120, controlling the input control sub-module and the power piece based on the liquid washing instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding.

The input control submodule is used for controlling the on and off of the liquid inlet channel, when the liquid inlet channel is on, the common rail cavity can input liquid through the liquid inlet channel, and when the liquid inlet channel is off, the common rail cavity cannot input liquid through the liquid inlet channel. The power piece can convey liquid in the liquid storage cavity to the pressure accumulation cavity, and a liquid supply port of the pressure accumulation cavity is communicated with the liquid inlet path, so that when the power piece is started and the input control sub-module enables the liquid inlet path to be conducted, the liquid can flow into the pressure accumulation cavity and the common rail cavity.

S130, determining whether the common rail cavity and the pressure accumulation cavity are full of liquid.

If the common rail chamber and the accumulator chamber are filled with liquid, step S140 is performed. If the common rail chamber and the accumulator chamber are not filled with liquid, the process continues to step S130.

And S140, acquiring the intra-cavity pressure information, controlling the working state of the power piece based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned.

When the common rail cavity and the pressure accumulation cavity are full of liquid, the follow-up output control submodule is communicated with an output path so that the sprayed liquid can be ensured to be bubble-free when the nozzle liquid is discharged to clean the part to be cleaned, and the cleanliness during cleaning is ensured.

The intra-cavity pressure information is information reflecting the pressure in the common rail cavity. The power piece can carry the liquid in the stock solution chamber to the pressure accumulation chamber, because the feed liquor mouth in pressure accumulation chamber with the feed liquor way intercommunication, so the liquid in the pressure accumulation chamber also can carry to the common rail chamber this moment, and the pressure in common rail chamber is the same with the pressure in pressure accumulation chamber this moment. In the running process of the power piece, when the working states of the power piece are different, the pressure values of the common rail cavity and the pressure accumulation cavity are different, namely the pressure information in the cavities is different. For example, the higher the rotational speed of the power member, the greater the intra-cavity pressure information will be, and the lower the rotational speed of the power member, the lower the intra-cavity pressure information will be. The preset intra-cavity pressure is a value to be reached by the pressure of the common rail cavity at the time of cleaning preset in advance. The working state of the power piece is controlled based on the intra-cavity pressure information and the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, so that the pressure can be stabilized, and when the output passage is conducted to discharge liquid through the nozzle, the pressure accumulation cavity can keep constant pressure and output stably, and the instant pressure drop caused by small storage flow of the existing common rail cavity is compensated.

According to the scheme, the cleaning instruction comprises the liquid cleaning instruction, and then the input control submodule and the power piece are controlled based on the liquid cleaning instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding. It is then determined whether the common rail chamber and the accumulator chamber are full of liquid. And finally, when the common rail cavity and the pressure accumulation cavity are full of liquid, acquiring the intra-cavity pressure information, controlling the working state of the power part based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned. Therefore, the pressure accumulation cavity can provide a large amount of pressure instantly, pressure is stabilized, when a plurality of output channels are conducted to carry out liquid discharging, the pressure accumulation cavity can keep constant pressure and output stably, instant pressure drop caused by small storage flow of the existing common rail cavity is made up, and the problem that the cleaning effect is influenced due to instant drop of spray cleaning pressure when the existing cleaning system discharges liquid is solved. Meanwhile, due to the pressure accumulation function of the pressure accumulation cavity, even if the power piece does not work, the liquid amount stored in the pressure accumulation cavity can also be used for the common rail module to clean the parts to be cleaned for a small number of times, a certain amount of liquid can be provided when the power piece fails, the pressure accumulation cavity can be used for emergency, and the situation that potential safety hazards are caused when the power piece fails and the parts to be cleaned are difficult to clean is prevented.

and comparing the intra-cavity pressure information with preset intra-cavity pressure.

And if the intra-cavity pressure information is larger than the preset intra-cavity pressure, controlling the power piece to reduce the rotating speed, and continuously executing the step of comparing the intra-cavity pressure information with the preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure.

When the rotating speed of the power part is reduced, the pressure applied to the pressure accumulation cavity is small, so that the pressure in the pressure accumulation cavity and the common rail cavity is reduced, namely the pressure information in the cavity is reduced; when the rotation speed of the power member increases, the pressure applied to the accumulator chamber is large, so the pressures of the accumulator chamber and the common rail chamber increase, that is, the intra-chamber pressure information increases. Therefore, the power piece is controlled to reduce the rotating speed when the intra-cavity pressure information is larger than the preset intra-cavity pressure, and the power piece is controlled to increase the rotating speed when the intra-cavity pressure information is smaller than the preset intra-cavity pressure, so that the intra-cavity pressure information can be maintained at the preset intra-cavity pressure.

and acquiring liquid level information of the liquid storage tank detected by the liquid level detection piece.

a liquid reduction amount of the liquid storage cavity is determined based on the liquid level information.

It is determined whether the liquid reduction amount is greater than a sum of volumes of the common rail chamber and the accumulator chamber.

And if the liquid reduction amount is larger than the sum of the volumes of the common rail cavity and the pressure accumulation cavity, determining that the common rail cavity and the pressure accumulation cavity are full of liquid.

And if the liquid reduction amount is not greater than the sum of the volumes of the common rail cavity and the pressure accumulation cavity, determining that the common rail cavity and the pressure accumulation cavity are not full of liquid.

The liquid level information is information reflecting the liquid level condition in the liquid storage tank, the liquid level detection piece can be a liquid level sensor, and the liquid level sensor can be arranged in the liquid storage tank, so that the liquid level information of the liquid storage tank can be detected. The liquid level information detected by the liquid level detection part is obtained in various ways, for example, the liquid level information can be electrically connected with the liquid level detection part, and the liquid level information of the liquid storage tank detected by the liquid level detection part can be obtained.

The liquid decrease amount means an amount of water in the reservoir tank that is delivered into the accumulator chamber and the common rail chamber. And when the liquid reduction amount is larger than the sum of the volumes of the common rail cavity and the pressure accumulation cavity, judging that the liquid is full of the pressure accumulation cavity and the common rail cavity, and controlling the pressure relief unit to close the return pipeline. When the liquid reduction amount 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 full of liquid, at which time the step of determining whether the liquid reduction amount is greater than the sum of the volumes of the common rail chamber and the accumulator chamber may be returned until the liquid reduction amount is greater than the sum of the volumes of the common rail chamber and the accumulator chamber.

In addition, based on the liquid washing instruction control input control submodule and the power piece, when the common rail cavity and the pressure accumulation cavity start liquid feeding, the pressure relief unit also conducts the return pipeline, so that redundant liquid can flow back to the liquid storage cavity.

Example IV

Fig. 8 is a flowchart of a vehicle cleaning method according to a fourth embodiment of the present invention, where the relationship between the fourth embodiment and the above embodiment is a modification of the third embodiment, and optionally, the cleaning instruction further includes a gas cleaning instruction, and after the cleaning instruction is obtained, the method further includes: the input control sub-module and the air supply module are controlled based on the air washing instruction to enable the common rail cavity to start air intake through the air inlet channel; determining whether the common rail chamber and the accumulator chamber are full of gas; and if the common rail cavity and the pressure accumulation cavity are filled with gas, controlling the pressure relief unit to close the return pipeline, and controlling the output control sub-module to conduct the output path so as to enable the nozzle to give out gas to clean the part to be cleaned. As shown in fig. 8, the vehicle cleaning method includes:

S210, acquiring a cleaning instruction, wherein the cleaning instruction comprises a liquid cleaning instruction and a gas cleaning instruction.

The air washing instruction refers to an instruction for instructing a vehicle washing system to wash a part to be washed by adopting air.

And S220, controlling the input control sub-module and the power piece based on the liquid washing instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding.

S230, determining whether the common rail cavity and the pressure accumulation cavity are full of liquid.

If the common rail chamber and the accumulator chamber are filled with liquid, step S240 is performed. If the common rail chamber and the accumulator chamber are not filled with liquid, the process continues to step S230.

S240, acquiring intra-cavity pressure information, controlling the working state of the power piece based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned.

S250, controlling the input control sub-module and the air supply module based on the air washing instruction to enable the common rail cavity to start air inlet through the air inlet channel.

After the spraying of the liquid is completed, in order to avoid the influence of moisture residue on the sight of a driver, air injection can be carried out to blow the moisture of the part to be cleaned. Before air injection, air is required to be ensured to be in the common rail cavity, so that liquid in the common rail cavity is required to be discharged and air intake is started, and the input control sub-module can be controlled to enable the air intake path to be in a communicated state and control the air supply module to start air supply, so that the liquid in the common rail cavity can be discharged from the output path in the air intake process. The output path can also be closed when the common rail cavity is communicated with the liquid storage cavity through the return pipeline, so that the liquid in the common rail cavity is discharged to the liquid storage cavity through the return pipeline.

S260, determining whether the common rail cavity and the pressure accumulation cavity are full of gas.

If the common rail chamber and the accumulator chamber are filled with gas, step S270 is performed. If the common rail cavity and the pressure accumulation cavity are not full of gas, continuing to execute the step S260 until the common rail cavity and the pressure accumulation cavity are full of gas.

And S270, controlling the pressure relief unit to close the return pipeline, and controlling the output control sub-module to conduct the output pipeline so as to enable the nozzle to give out air to clean the part to be cleaned.

When the common rail cavity is filled with gas, the output control submodule can be controlled to enable the output path to be in a communicated state, the gas in the common rail cavity can be sprayed out through the output routing nozzle, and moisture on a part to be cleaned can be dried to be cleaned, so that the influence of moisture residue on the sight of a driver is effectively avoided.

According to the scheme, the input control sub-module and the power piece are controlled to enable the common rail cavity and the pressure accumulation cavity to start to feed liquid through the liquid inlet channel, then whether the common rail cavity and the pressure accumulation cavity are full of liquid is determined, the working state of the power piece is adjusted when the common rail cavity and the pressure accumulation cavity are full of liquid, the pressure information in the cavity is the preset pressure in the cavity, then the output control sub-module is controlled to enable the liquid in the common rail cavity to be sprayed out through the output route nozzle so as to clean the part to be cleaned, the input control sub-module and the air supply module are controlled to enable the liquid in the common rail cavity to be discharged and to start to feed air through the air inlet channel, finally whether the common rail cavity is full of gas is determined, and the output control sub-module is controlled to enable the gas in the common rail cavity to be sprayed out through the output route nozzle so as to clean the part to be cleaned when the common rail cavity is full of gas. Therefore, the nozzle can clean liquid sprayed from the part to be cleaned firstly in the running process of the vehicle, then the gas sprayed from the part to be cleaned is dried, the residual moisture is prevented from interfering the normal use of the part to be cleaned, the problem that the part to be cleaned is inconvenient to wipe in the running process of the vehicle and the running safety of the vehicle is easily affected is solved, and the safety in the running process of the vehicle is improved. Meanwhile, the gas and the liquid can share the common rail cavity, and the gas and the liquid in the common rail cavity are switched when the vehicle cleaning system is used, so that the space is effectively utilized, and the volume of the vehicle cleaning system is reduced. In addition, when a plurality of output ways are conducted to carry out liquid, the pressure accumulation cavity can keep constant pressure stable output, the instant pressure drop caused by small storage flow of the existing common rail cavity is made up, and the problem that the cleaning effect is affected due to instant drop of spray cleaning pressure when the existing cleaning system is used for liquid is solved.

and determining the liquid increment of the liquid storage cavity based on the liquid level information.

It is determined whether the liquid increase is greater than a sum of volumes of the accumulator chamber and the common rail chamber.

And if the liquid level increment is larger than the sum of the volumes of the pressure accumulation cavity and the common rail cavity, determining that the pressure accumulation cavity and the common rail cavity are full of gas.

The increased amount of liquid refers to the amount of water that is returned to the reservoir. When the liquid increment is larger than the sum of the volumes of the common rail cavity and the pressure accumulation cavity, the fact that the pressure accumulation cavity and the common rail cavity are filled with gas is judged, and at the moment, the pressure relief unit can be controlled to close the return pipeline. When the liquid increase amount is not greater than the sum of the volumes of the common rail chamber and the pressure accumulation chamber, it is determined that the common rail chamber and the pressure accumulation chamber are not filled with the liquid gas, at which time the step of determining whether the liquid increase amount is greater than the sum of the volumes of the pressure accumulation chamber and the common rail chamber may be returned until the liquid level increase amount is greater than the sum of the volumes of the pressure accumulation chamber and the common rail chamber.

Example five

Fig. 9 is a flowchart of a vehicle cleaning method according to a fifth embodiment of the present invention, where the relationship between the fifth embodiment and the above embodiment is an improvement of the fourth embodiment, and optionally, the vehicle cleaning method further includes: and acquiring a vehicle state signal sent by the whole vehicle controller. A washing protocol is determined based on the vehicle status signal. As shown in fig. 9, the vehicle cleaning method includes:

s310, acquiring a vehicle state signal sent by the whole vehicle controller.

S320, determining a cleaning scheme based on the vehicle state signal.

The vehicle state signal is a signal reflecting a vehicle running state including a running direction, a running speed, and the like of the vehicle. Since the vehicle cleaning system includes a plurality of output paths, the number of parts to be cleaned is also plural, and different output paths correspond to different parts to be cleaned. The cleaning scheme refers to which specific parts to be cleaned are to be cleaned, the cleaning time, the cleaning method and the like.

The cleaning scheme is determined based on the vehicle state signal, and can be adjusted according to the actual condition of the vehicle to be more matched with the actual cleaning requirement of the vehicle.

S330, acquiring a cleaning instruction, wherein the cleaning instruction comprises a liquid cleaning instruction and a gas cleaning instruction.

And S340, controlling the input control sub-module and the power piece based on the liquid washing instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding.

S350, determining whether the common rail cavity and the pressure accumulation cavity are full of liquid.

If the common rail chamber and the accumulator chamber are filled with liquid, step S360 is performed. If the common rail chamber and the accumulator chamber are not filled with liquid, the process continues to step S370.

S360, acquiring intra-cavity pressure information, controlling the working state of the power piece based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned.

S370, controlling the input control sub-module and the air supply module based on the air washing instruction to enable the common rail cavity to start air intake through the air inlet channel.

S380, determining whether the common rail cavity and the pressure accumulation cavity are full of gas.

If the common rail chamber and the accumulator chamber are filled with gas, step S390 is performed. If the common rail cavity and the pressure accumulation cavity are not full of gas, continuing to execute the step S370 until the common rail cavity and the pressure accumulation cavity are full of gas.

S390, controlling the pressure relief unit to close the return pipeline, and controlling the output control sub-module to conduct the output pipeline so as to enable the nozzle to give out air to clean the part to be cleaned.

On the basis of the above embodiment, the to-be-cleaned component includes at least one of a rear-view camera and a rear-side radar, the vehicle state signal includes a vehicle running signal, and the determining a cleaning scheme based on the vehicle state signal includes:

and determining whether the vehicle is in reverse or not based on the vehicle running signal.

The rear-view camera is one of the vehicle-mounted cameras for reversing the vehicle, mainly a display screen in front of a driver can display images of the rear-view camera when the vehicle is reversed, a real-time video image condition behind the vehicle is intuitively seen, the rear-side radar is a parking radar behind the vehicle, and the rear-side radar is a safety auxiliary device when the vehicle is parked or reversed. Because different output paths are used for outputting gas or liquid to clean different parts to be cleaned, when the vehicle is reversed, the rearview camera and the rear-side radar play an important role in safe reversing of the vehicle, when the vehicle is reversed, a cleaning instruction is output to control the rearview camera and/or the output control submodule corresponding to the rear-side radar to conduct the corresponding output paths so as to clean the rearview camera and the rear-side radar, and the rearview camera and the rear-side radar can be cleaned preferentially when the vehicle is reversed, so that the reversing safety of the vehicle is improved. Lateral camera

Determining whether the vehicle is traveling forward based on the vehicle travel signal.

And if the vehicle is in forward movement, determining whether the vehicle speed is greater than a preset speed threshold value based on the vehicle speed signal.

And if the vehicle speed is greater than the preset speed threshold, outputting the cleaning instruction to control the corresponding output control sub-module of the lateral camera and/or the lateral radar to conduct the corresponding output path so as to clean the lateral camera and/or the lateral radar.

The vehicle speed signal is a signal reflecting the running speed of the vehicle, and the lateral cameras are vehicle-mounted cameras used for monitoring the left side and the right side of the vehicle and assisting safe driving; the lateral radar refers to a parking radar on the side of the vehicle; the side camera is a camera used for shooting a side blind area of the vehicle, and the side radar is a radar used for sensing the side blind area of the vehicle.

The preset speed threshold is a threshold for distinguishing whether the vehicle is at a high speed or a low speed, and when the vehicle speed is greater than the preset speed threshold, the vehicle is indicated to be running at a high speed, and the lateral camera and the lateral radar are cleaned preferentially. And when the vehicle speed is not greater than a preset speed threshold, indicating that the vehicle runs at a low speed, and cleaning the side camera and the side radar preferentially. By the mode, different parts to be cleaned can be cleaned according to the speed and the running direction of the vehicle, the actual requirements of a driver are more matched, and the running safety is improved.

and determining whether the water quantity in the liquid storage cavity is sufficient or not based on the liquid level information.

The liquid level information reflects the liquid level condition in the liquid storage cavity, so that whether the water volume in the liquid storage cavity is sufficient can be judged according to the liquid level information. Specifically, the determining whether the water volume in the liquid storage cavity is sufficient based on the liquid level information includes: comparing the liquid level information with first preset liquid level information, when the liquid level information is higher than the first preset liquid level information, determining that the water quantity in the liquid storage cavity is sufficient, and when the liquid level information is not higher than the first preset liquid level information, determining that the water quantity in the liquid storage cavity is insufficient. The first preset liquid level information is a threshold value reflecting whether the quantity in the liquid storage cavity is sufficient.

The main cleaning part is a part to be cleaned which is important for running safety in a vehicle, and the secondary cleaning part is a part to be cleaned which is lower in importance than the main cleaning part. The secondary cleaning part is firstly subjected to pneumatic cleaning when the water quantity is insufficient, and the primary cleaning part is subjected to water cleaning and then pneumatic cleaning, so that the water quantity is saved, and the safety of a vehicle is ensured.

Example six

Fig. 10 is a flowchart of a vehicle cleaning method according to a sixth embodiment of the present invention, where the relationship between the present embodiment and the above embodiment is a modification of the fifth embodiment, and optionally, the vehicle cleaning method further includes: current road surface information is determined. A cleaning solution is determined based on the current road surface information. As shown in fig. 10, the vehicle cleaning method includes:

S411, acquiring a vehicle state signal sent by the whole vehicle controller.

S421, determining a cleaning scheme based on the vehicle state signal.

S412, determining current road surface information.

The current road surface information refers to information about a road surface on which the current vehicle is traveling, and includes, for example, a sand road section, a dust road section, a wading road section, and a mud road section.

S422, determining a cleaning scheme based on the current road surface information.

The cleaning scheme refers to specific parts to be cleaned, cleaning time, cleaning method and the like. Because different cleaning schemes suitable for different current road surface information are different, the actual requirements of the vehicle can be more matched by determining the cleaning scheme based on the current road surface information, and the driving safety is improved. Preferably, the vehicle cleaning system course comprises a GPS module, and meanwhile, a temperature sensor and a humidity sensor are arranged on the vehicle, so that the running position, the terrain and the weather state of the vehicle can be judged, and the current road surface information can be obtained.

S430, acquiring a cleaning instruction, wherein the cleaning instruction comprises a liquid cleaning instruction and a gas cleaning instruction.

S440, controlling the input control sub-module and the power piece based on the liquid washing instruction to enable the common rail cavity and the pressure accumulation cavity to start liquid feeding.

S450, determining whether the common rail cavity and the pressure accumulation cavity are full of liquid.

If the common rail chamber and the accumulator chamber are filled with liquid, step S460 is performed. If the common rail chamber and the accumulator chamber are not filled with liquid, the process continues to step S470.

S460, acquiring intra-cavity pressure information, controlling the working state of the power piece based on the intra-cavity pressure information and preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure, and controlling the output control submodule to conduct an output path when the intra-cavity pressure information is the preset intra-cavity pressure so as to enable the nozzle to be discharged to clean the part to be cleaned.

S470, controlling the input control sub-module and the air supply module based on the air washing instruction to enable the common rail cavity to start air intake through the air inlet channel.

S480, determining whether the common rail cavity and the pressure accumulation cavity are full of gas.

If the common rail chamber and the accumulator chamber are filled with gas, step S490 is performed. If the common rail chamber and the accumulator chamber are not filled with gas, continuing to execute step S470 until the common rail chamber and the accumulator chamber are filled with gas.

S490, controlling the pressure relief unit to close the return pipeline, and controlling the output control sub-module to conduct the output pipeline so as to enable the nozzle to give out air to clean the part to be cleaned.

it is determined whether the current road surface information is a muddy road.

The sensing information is information related to the external environment sensed by the part to be cleaned. The first preset dirt standard refers to a standard which is preset in advance and is met by the perception information of the to-be-cleaned part when the to-be-cleaned part is dirty and still needs to be cleaned. Preferably, in a specific embodiment, the component to be cleaned may be a camera, the sensing information is road surface image information acquired by the camera, the road surface image information is subjected to graying processing, the first preset dirt standard includes a first preset gray value, and when the gray information obtained by graying the road surface image information is greater than the first preset gray value, it is indicated that the component to be cleaned meets the first preset dirt standard. Because of the image captured by the camera, the color and brightness of each pixel point are different, and a lot of image characteristic information is contained in the image. Any color in the image is composed of three primary colors of red, green and blue in a matching way, if the color of a certain pixel point is RGB (R, G and B), in the RGB model assembly, when R=G=B, the expressed value is a gray value. In the gray image, each pixel only needs one byte to store gray values, each pixel only has one sampling color, the gray value range is 0-255, the darkest color is black (black gray value is 0), the brightest color is white (white gray value is 255) and the middle is transition color with different gray degrees. When the camera is covered by dirt, the light transmittance of the area can be greatly reduced due to different dirt degrees at the dirt gathering place, the gray value of the area where the photographed picture pixel point is located is smaller, the light transmittance of the clean area is larger, the picture is whiter, and therefore the gray value of the pixel point is larger. Therefore, the cleaning efficiency before and after cleaning can be evaluated and judged by the gray value of each pixel point after the image acquired by the camera is gray.

The standard cleaning time refers to standard time preset in advance for cleaning a normal road section, and the standard cleaning pressure refers to standard pressure preset in advance for cleaning the normal road section. The current cleaning time refers to the time when cleaning is performed currently, the current cleaning time includes the current liquid outlet time when the cleaning instruction includes the liquid cleaning instruction, and the current cleaning time includes the current air outlet time when the cleaning instruction includes the air cleaning instruction. The current cleaning pressure refers to the pressure at the current cleaning time, when the cleaning instruction comprises a liquid cleaning instruction, the current cleaning time comprises the liquid pressure output by the common rail cavity at the current liquid outlet time, and when the cleaning instruction comprises a gas cleaning instruction, the current cleaning time comprises the gas pressure of the common rail cavity. Preferably, in one specific embodiment, the standard purge time is 3 seconds, the first purge time is 2 seconds, the standard purge pressure is 6bar, and the first purge time is 3bar.

Because the muddy road section is special than the ordinary road section, its dirty easy adhesion is on the part of waiting to wash but easily washs, through waiting to wash the part and satisfying first dirt standard of predetermineeing, reduce current cleaning pressure to first cleaning pressure by standard cleaning pressure, reduce current cleaning time to first cleaning time by standard cleaning time to can reduce the consumption in order to increase the washing number of times. And for the parts to be cleaned, which are not seriously polluted, the parts to be cleaned are cleaned after the parts to be cleaned travel through a muddy road section, so that the power consumption can be saved.

On the basis of the above embodiment, after the control of the output control sub-module 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:

determining whether the component to be cleaned meets the first preset dirt standard again within a first preset time.

The manual cleaning prompt information is information for prompting a user to perform manual cleaning, and the feedback information is information fed back by the user in a manual cleaning mode after the user receives the manual cleaning prompt information. Because the muddy road section is special than the ordinary road section, its dirty easy adhesion is on the part of waiting to wash but easily washs, if high frequency washs then easily wastage wash the resource, if wait to wash the part and satisfy again in the first time of predetermineeing first dirt standard of predetermineeing, indicate under this muddy road section, wait to wash the part and wash and just can dirty again after the short time, if still wash according to dirty condition voluntarily, wash the resource waste seriously, through suggestion user change into manual washing, can wash according to the selective washing of self actual driving condition when user changes into manual washing, so as to save resources.

it is determined whether the current road surface information is at least one of a sand road section, a dust road section, and a wading road section.

The sensing information is information related to the external environment sensed by the part to be cleaned. The second preset dirt standard refers to a standard which is preset in advance and is met by the perception information of the to-be-cleaned part when the to-be-cleaned part is dirty and still needs to be cleaned. Preferably, in a specific embodiment, the component to be cleaned may be a camera, the sensing information is road surface image information acquired by the camera, the road surface image information is subjected to graying processing, the second preset dirt standard includes a second preset gray value, and when the gray information obtained by graying the road surface image information is greater than the second preset gray value, it is indicated that the component to be cleaned meets the second preset dirt standard.

Dirt on sand sections and dust sections can be cleaned by blowing off sand particles and dust by using gas, and water on wading sections can cause the cleaned components to be attached by water and the cleaned components need to be blown dry by using gas to prevent the sight of users. When the current road surface information is at least one of a sand road section, a dust road section and a wading road section, the air washing instruction is output firstly to control the output path corresponding to the to-be-washed component to be discharged so as to carry out pneumatic washing on the to-be-washed component, and if the to-be-washed component is still dirty after pneumatic washing, the to-be-washed component is washed firstly and then is subjected to pneumatic washing, so that washing resources can be saved.

In an alternative embodiment of the present invention, as shown in fig. 11, the determining the current road surface information includes:

s4121, establishing a road condition image recognition algorithm model.

S4122, acquiring current road surface image information.

S4123, determining the current road surface information based on the current road surface image information and the road condition image recognition algorithm model.

The road condition image recognition algorithm model is a model capable of recognizing road surface information according to road surface image information, the current road surface image information is an image of a road surface outside a current vehicle, the current road surface image information can be obtained through a camera on the vehicle, and the camera can send the current road surface image information to the control module through the whole vehicle controller after obtaining the current road surface image information. 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.

On the basis of the above embodiment, as shown in fig. 12, the building of the road condition image recognition algorithm model includes:

s41211, road surface standard images of different road surfaces are acquired.

S41212, performing model training on the road surface standard images of different road surfaces to obtain training parameters.

S41213, constructing a road condition image recognition algorithm model based on the training parameters.

The road condition image recognition algorithm model can be a deep learning model, road surface standard images refer to standard images of different road surfaces, such as bumpy road surfaces, snowy road surfaces, muddy road surfaces, wading road surfaces, sand road surfaces and the like, and training parameters can be obtained by taking the images of the different road surfaces as the road surface standard images and inputting the images into the built initial model for training, so that the road condition image recognition algorithm model can be built. And the current road surface information can be determined only by inputting the current road surface image information into the road condition image recognition algorithm model.

and acquiring the current temperature outside the vehicle. And determining whether the current outside temperature is lower than a preset temperature threshold. And if the current temperature outside the vehicle is lower than the preset temperature threshold, controlling a heating module to start so as to heat the part to be cleaned. The preset temperature threshold value refers to a value which is preset in advance and above which the temperature outside the vehicle is required to be higher. The current outside temperature refers to the current outside ambient temperature. Specifically, a temperature sensor can be arranged outside the vehicle, so that the current temperature outside the vehicle can be detected. When the current temperature outside the automobile is lower than a preset temperature threshold value, the temperature outside the automobile is too low, ice and snow are likely to exist on the part to be cleaned, and the heating module is controlled to be started to heat the part to be cleaned, so that the ice and snow on the periphery of the part to be cleaned can be melted, the part to be cleaned is cleaned after the ice and snow are melted, and the part to be cleaned is prevented from being cleanly cleaned.

and acquiring the rainfall information detected by the rainfall detection part. And determining whether the rainy day is rainy or not based on the rainfall information. If the cleaning effect of the part to be cleaned does not meet the preset cleaning effect, the liquid washing instruction is output to control the output path corresponding to the part to be cleaned to be discharged first to wash the part to be cleaned.

The rainfall detection means is a member capable of detecting the amount of rainfall outside the vehicle, and the rainfall information is information reflecting whether the vehicle is raining or not and the amount of rainfall. Preferably, the rainfall detection part is a rainfall sensor, and the rainfall sensor is suitable for relevant departments such as weather stations (stations), hydrologic stations, agriculture and forestry, national defense and the like to remotely measure the precipitation amount, the precipitation intensity and the precipitation start-stop time of the liquid. The system is used for controlling flood, dispatching water supply, and controlling reservoir water conditions of a power station. The rainfall sensor is an optical system in an infrared band, a light emitting component is responsible for emitting infrared rays, when the surface of the glass is dry, almost 100 percent of the light rays are reflected back, so that the sensor can receive a lot of reflected light rays, and the system defaults to a sunny day. The rainfall sensor is able to detect rainfall information. Specifically, the rainfall detection part is arranged at the bracket position where the rearview mirror and the front glass of the automobile are attached, so that rainfall information can be conveniently detected. The rainfall detection part can be directly communicated with the control module to transmit rainfall information to the control module, and can also be communicated with the whole vehicle controller to transmit the rainfall information to the control module through the whole vehicle controller.

The method comprises the steps of acquiring image information perceived by a part to be cleaned, determining whether the part to be cleaned is blocked by a blocking object based on the image information, for example, gray information can be obtained by gray processing the image information, and whether the part to be cleaned is blocked by the blocking object can be judged according to the gray information. Meanwhile, when the part to be cleaned is covered by dirt, the light transmittance of the region can be greatly reduced due to different dirt degrees at the dirt gathering place, the gray value of the region where the pixel point of the shot picture is positioned is smaller, the light transmittance of the clean region is larger, the part is whiter when the part to be cleaned is displayed on the image, and the gray value of the pixel point is larger. Therefore, the cleaning efficiency before and after cleaning can be evaluated and judged by the gray value of each pixel point after the image acquired by the camera is gray. Therefore, whether the cleaning effect of the part to be cleaned meets the preset cleaning effect or not can be determined according to the gray information, for example, the preset cleaning effect comprises a preset gray value, and when the gray information is larger than the preset gray value, it is determined that the cleaning effect of the part to be cleaned does not meet the preset cleaning effect.

Through the scheme, when the part to be cleaned is shielded by the shielding object, the air washing instruction is output to pneumatically clean the part to be cleaned, and when the cleaning effect is poor, the air washing instruction is output to wash the part to be cleaned.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The vehicle cleaning system is used for cleaning a part to be cleaned of a vehicle and comprises a common rail module, a liquid storage tank and a nozzle, wherein a common rail cavity is formed in the common rail module, the common rail cavity comprises a liquid inlet path and an output path, the output path is communicated with the nozzle, the liquid storage tank is provided with a liquid storage cavity, the liquid storage cavity is used for storing liquid, the common rail module further comprises an input control submodule and an output control submodule, the input control submodule is used for controlling the on and off of the liquid inlet path, the number of the output paths and the number of the output control submodules are multiple, and the output control submodules are used for controlling the on and off of the output paths in a one-to-one correspondence mode; the device is characterized by further comprising a pressure storage part, a first pressure detection part, a power part and a control module;

2. The vehicle washing system of claim 1, wherein the pressure accumulating member is provided on the reservoir;

And/or the power piece is an electric pump.

3. The vehicle washing system of claim 1, wherein the volume of the accumulator chamber is determined by the following equation:

4. The vehicle washing system according to any one of claims 1 to 3, characterized in that the common rail module further comprises a pressure relief unit, the common rail chamber has a backflow liquid outlet, the liquid storage tank has a backflow liquid inlet, a backflow pipeline is arranged between the backflow liquid outlet and the backflow liquid inlet and is communicated through the backflow pipeline, and the pressure relief unit is used for controlling the opening and closing of the backflow pipeline;

5. The vehicle washing system of claim 4, wherein 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;

6. A vehicle comprising a vehicle body on which a part to be cleaned and the vehicle cleaning system according to any one of claims 1 to 5 are provided.

7. A vehicle cleaning method, characterized by being applied to the vehicle cleaning system according to any one of claims 1 to 5, comprising:

8. The vehicle cleaning method of claim 7, wherein the controlling the operating state of the power member based on the intra-cavity pressure information and a preset intra-cavity pressure until the intra-cavity pressure information is the preset intra-cavity pressure comprises:

9. The vehicle washing method of claim 7, wherein the determining whether the common rail chamber and the accumulator chamber are full of liquid is preceded by:

10. The vehicle cleaning method according to any one of claims 7 to 9, characterized in that the cleaning instruction further includes a gas cleaning instruction, and after the cleaning instruction is acquired, further includes:

11. The vehicle cleaning method of claim 10, wherein the determining whether the common rail chamber and the accumulator chamber are full of gas is preceded by:

12. The vehicle cleaning method according to any one of claims 7 to 9, characterized in that the vehicle cleaning method further includes:

acquiring a vehicle state signal sent by a vehicle controller;

a washing protocol is determined based on the vehicle status signal.

13. The vehicle washing method of claim 12, wherein the component to be washed includes at least one of a rear-view camera and a rear-side radar, the vehicle status signal includes a vehicle travel signal, and the determining a washing scheme based on the vehicle status signal includes:

determining whether the vehicle is backing based on the vehicle travel signal;

14. The vehicle washing method of claim 12, wherein the component to be washed includes at least one of a lateral camera, a lateral radar, a lateral camera, and a lateral radar, the vehicle status signal further includes a vehicle speed signal, the determining a washing scheme based on the vehicle status signal includes:

15. The vehicle cleaning method of claim 10, wherein the component to be cleaned further comprises a primary cleaning component and a secondary cleaning component; the vehicle cleaning method further includes:

16. The vehicle cleaning method of claim 10, characterized in that the vehicle cleaning method further comprises:

determining current road surface information;

17. The vehicle washing method of claim 16, wherein the determining a washing scheme based on the current road surface information includes:

18. The vehicle washing method of claim 16, wherein the determining a washing scheme based on the current road surface information includes:

19. The vehicle cleaning method of claim 18, wherein after the controlling the output control sub-module turns on the corresponding output path and cleans the component to be cleaned at the current cleaning pressure and the current cleaning time, further comprising:

20. The vehicle washing method according to any one of claims 16 to 19, characterized in that the determining current road surface information includes:

establishing a road condition image recognition algorithm model;

acquiring current road surface image information;

21. The vehicle cleaning method of claim 20, wherein the establishing a road condition image recognition algorithm model includes:

collecting road surface standard images of different road surfaces;

22. The vehicle cleaning method according to any one of claims 7 to 9, characterized in that the control output control submodule turns on an output path when the intra-cavity pressure information is the preset intra-cavity pressure so that the nozzle discharges to clean the component to be cleaned, further comprising:

acquiring the current temperature outside the vehicle;

23. The vehicle cleaning method of claim 10, characterized in that the vehicle cleaning method further comprises:

determining whether it is rainy days based on the rainfall information;