CN111348002B - Active cleaning device for optical sensor and radar for vehicle - Google Patents
Active cleaning device for optical sensor and radar for vehicle Download PDFInfo
- Publication number
- CN111348002B CN111348002B CN201811573907.1A CN201811573907A CN111348002B CN 111348002 B CN111348002 B CN 111348002B CN 201811573907 A CN201811573907 A CN 201811573907A CN 111348002 B CN111348002 B CN 111348002B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 127
- 238000004140 cleaning Methods 0.000 title claims abstract description 101
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims description 98
- 238000005507 spraying Methods 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 description 21
- 238000007664 blowing Methods 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 14
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
- B60S1/60—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for signalling devices, e.g. reflectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/487—Liquid supply therefor the liquid being heated
- B60S1/488—Liquid supply therefor the liquid being heated electrically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/52—Arrangement of nozzles; Liquid spreading means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The vehicle optical sensor and radar active cleaning device comprises a water tank with a water pump, a temperature sensor and a heater, a controller, a plurality of optical sensors and radars arranged on a vehicle body and a cleaner, wherein the water tank is communicated with the cleaner through a water pipe, the temperature sensor is arranged on the water tank, the water pump, the heater and the cleaner are controlled to be started and stopped by the controller, when the temperature sensor detects that the temperature is lower than a set temperature, a signal is transmitted to the controller to start the heater to heat a cleaning solution, each optical sensor and each radar are respectively provided with an optical sensor and a radar cleaning detection system, the controller starts and stops the optical sensors and the radar cleaning detection systems, the optical sensors and the radar cleaning detection systems detect and judge the cleaning degree of the optical sensors and the radars, and the water pump and the cleaner are started by the controller to clean the optical sensors and the radars through the water pump and the cleaner.
Description
Technical Field
The invention relates to an optical sensor for a vehicle and a radar active cleaning device.
Background
With the improvement of the automation level of vehicles, more optical sensors and radars supporting automated driving are installed on future vehicles, and reliable detection and accurate assessment of the running environment of the vehicles are basic preconditions of automatic parking, driving assistance functions and automated intelligent driving. Therefore, sensor and radar cleaning is becoming increasingly important. Meanwhile, as the quantity of the vehicle sensors and the radars is increased and the water quantity carried by the vehicle is limited and the electricity consumption condition is limited, and the cleaning degree of each sensor and the radars is different, the design of the vehicle optical sensor and the radar cleaning device is urgently needed, so that the vehicle optical sensor and the radar cleaning device can be started when the optical sensor and the radars need to be cleaned, and the cleaning requirement of the vehicle optical sensor and the radar can be still maintained under the existing vehicle water and electricity conditions.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide the active cleaning device for the optical sensor and the radar for the vehicle, so that the cleaning device can start cleaning when the sensor and the radar cannot be used normally due to dirtying, and the optical sensor and the radar can be used normally under the condition of the vehicle.
The invention solves the problems by adopting the following technical scheme: the vehicle optical sensor and radar active cleaning device comprises a water tank with a water pump, a temperature sensor and a heater, a controller, a plurality of optical sensors and radars arranged on a vehicle body and a cleaning device for cleaning the corresponding optical sensors and radars on each optical sensor and radars, wherein the water tank is communicated with the cleaning device through a water pipe, the temperature sensor is arranged on the water tank, the water pump, the heater and the cleaning device are controlled to be started and closed by the controller, when the temperature sensor detects that the temperature is lower than a set temperature, a signal is transmitted to the controller to start the heater to heat a cleaning liquid, each optical sensor and each radar are respectively provided with an optical sensor and radar cleaning detection system, the controller starts and stops the optical sensors and the radar cleaning detection systems, the optical sensors and the radar cleaning detection systems detect and judge the cleaning degree of the optical sensors and the radars, and the water pump and the cleaning device are started by the controller through non-cleaning signals of the optical sensors and the radars, and the cleaning optical sensors and the radar are cleaned by the water pump and the cleaning device.
Preferably, the cleaner includes:
A cleaner body comprising:
The cavity is divided into a liquid cavity and a gas cavity by the piston, and a liquid inlet of the liquid cavity is communicated with a liquid cavity of the cavity and is controlled to be on-off by the control valve; the air inlet of the air cavity is connected with the atmosphere through a one-way air inlet valve;
the elastic return piece is arranged in the gas cavity, one end of the elastic return piece is connected with the wall of the gas cavity, and the other end of the elastic return piece is connected with the piston;
the inlet of the one-way air outlet valve is communicated with the air cavity, and the air outlet of the one-way air outlet valve is communicated with the outlet;
the inlet of the one-way liquid outlet valve is communicated with the liquid outlet of the liquid cavity, and the liquid outlet of the one-way liquid outlet valve is communicated with the outlet;
When the liquid cavity is filled with liquid, the liquid opens the one-way liquid outlet valve to spray the liquid from the outlet, and simultaneously pushes the piston to compress the gas in the gas cavity, the elastic return piece is compressed, and the gas in the gas cavity is pressurized; when the liquid stops entering, the one-way air outlet valve is opened to spray compressed air from the outlet, meanwhile, the elastic restoring piece pushes the piston to reset, the air pressure in the air cavity is reduced, and the air inlet cavity is used for air inlet from the one-way air inlet valve.
Preferably, the one-way liquid outlet valve comprises a water spraying valve sleeve and a water spraying valve rod, a liquid outlet channel is arranged in the water spraying valve rod, a liquid outlet of the liquid outlet channel is arranged on the circumference of the water spraying valve rod, and the water spraying valve sleeve is tightly sleeved on the water spraying valve rod to seal the water outlet hole.
Preferably, the one-way air outlet valve comprises an air injection valve sleeve and an air injection valve rod, an air outlet channel is arranged in the air injection valve rod, an air outlet of the air outlet channel is arranged on the circumference of the air injection valve rod, and the air injection valve sleeve is tightly sleeved on the air injection valve rod to seal the air outlet hole.
Preferably, the cavity is further provided with an outlet area, the one-way air outlet valve and the one-way liquid outlet valve are arranged in the cavity, the space outside the water spray valve and the air spray valve is connected into a whole, and the outlet area is filled with liquid after the one-way liquid outlet valve is pushed open by liquid when the liquid cavity is filled with liquid, the liquid is sprayed out from the outlet area, the pressure outside the one-way air outlet valve is increased, the piston is pushed to compress the gas in the gas cavity, the elastic return piece is compressed, and the gas pressure in the gas cavity is increased but does not reach the opening of the air spray valve; when the liquid stops entering, the pressure of the liquid in the outlet area is reduced, the pressure in the gas cavity breaks through the resistance of the air injection valve to spray compressed gas, and water drops on the cleaned object are blown and dried.
Preferably, the gas cavity is divided into a compression area and a gas storage area, the section of the gas storage area is smaller, and the compression area is communicated with the gas storage area through a communication hole.
Preferably, the gas chamber is communicated with the inlet of the one-way gas outlet valve of the outlet area through a compressed air pipe, the compressed air pipe is arranged in the middle of the chamber, and the piston is sleeved on the compressed air pipe, so that the piston can be positioned and guided by the gas communicating pipe.
Preferably, the control valve is a solenoid valve.
Preferably, the cleaner body comprises a cleaner end cap, a cleaner housing, the cleaner end cap being secured to the cleaner housing, which facilitates installation.
Preferably, the piston comprises a piston ring and a piston ring support, and the piston ring is connected with the piston ring support through a buckle.
Preferably, a heating belt is also arranged and is tightly fixed with the water pipe, and the heating belt is controlled to be opened and closed by a controller.
Preferably, the optical sensor and radar cleaning detection system can be manually turned on and off through the controller, so that operators can intervene to clean the optical sensor and the radar, and whether the optical sensor and the radar are in a normal working state or not is judged, so that the optical sensor and the radar can be cleaned in time, and the driving safety is ensured.
The cleaning detection system of the optical sensor and the radar can be automatically started and closed by setting a program in the controller, so that whether the optical sensor and the radar are clean or not can be timely detected after a certain driving distance and a certain driving time, and whether the optical sensor and the radar are in a normal working state or not can be judged, the optical sensor and the radar can be timely cleaned, and driving safety is guaranteed.
The water pump and the cleaner can be controlled by the vehicle-mounted image processing system and the vehicle-mounted radar data processing system through the controller, when the vehicle-mounted image processing system detects that the sensing image of the optical sensor is abnormal, or the vehicle-mounted radar data processing system detects that the data is abnormal, a command is sent out, the water pump and the cleaner are started through the controller, if the temperature sensor detects that the temperature is lower than the set temperature, the controller simultaneously starts the heater and the heating belt to heat the washing liquid, the optical sensor or the radar which needs to be cleaned is cleaned through the water pump and the cleaner, the stored compressed air is generated through the piston movement of the cleaner during cleaning, and then the optical sensor or the radar is blown dry by the nozzle.
The optical sensor or the radar cleaning detection system can be combined with the optical sensor or the radar, can be arranged separately, and can also be combined with the controller.
Preferably, the optical sensor cleaning and detecting system comprises a standard picture database and a picture difference discriminator, wherein the standard picture database records standard pictures recorded when the optical sensor is normal under the standard condition, the picture difference discriminator discriminates the pictures obtained when the optical sensor is cleaned and detected from the standard pictures, determines whether the optical sensor needs cleaning or not, and sends a signal that the optical sensor needs cleaning to the controller. The radar cleaning detection system comprises a standard detection database and a data difference discriminator, wherein the standard detection database records standard data detected when the radar is normal under standard conditions, the data difference discriminator discriminates the data obtained when the radar is detected with the standard data, determines whether the radar needs cleaning or not, and sends a signal that the radar needs cleaning to the controller.
Of course, other methods and systems for determining whether the optical sensor and radar are clean and operating properly can be used with the optical sensor and radar cleaning detection system.
The optical sensor may refer to a general optical sensor, which detects received light through its own light-transmitting optical component, and may further include an optical sensor hermetically connected to an additional light-transmitting component in order to keep the optical sensor clean, and at this time, the cleaner of the cleaning system is corresponding to the additional light-transmitting component of the optical sensor, and the additional light-transmitting component is cleaned, so that the optical sensor can work normally.
Preferably, the optical sensor and the corresponding cleaner are fixed together, and the radar and the corresponding cleaner are fixed together, so that the optical sensor and the cleaner or the radar and the cleaner can be manufactured in a standardized manner, and the installation is convenient.
Preferably, the water pipes, the heating belt and the electronic control circuit connected to the respective washers are integrated, so that the arrangement is more convenient.
Preferably, the main paths of the water pipe, the heating belt and the electronic control circuit are connected with the branch path plug-in connectors of the water pipe, the heating belt and the electronic control circuit of each cleaner through plug-in connectors.
Preferably, the cleaning signal control lines of the optical sensor and the radar are integrated with the water pipe, the heating belt and the electronic control line connected to the respective washers, so that the arrangement is more convenient.
Preferably, the main paths of the cleaning signal control lines, the water pipes, the heating belts and the electronic control lines of the optical sensors and the radars are connected with the branch path plug-in connectors of the cleaning signal control lines, the water pipes, the heating belts and the electronic control lines of the optical sensors or the radars of the respective cleaners through plug-in connectors.
Still provide another kind of automobile-used optical sensor and radar initiative belt cleaning device, its characterized in that: the cleaning device comprises a water tank with a water pump, a temperature sensor and a heater, a controller, a plurality of optical sensors and radars arranged on a vehicle body, and a cleaning device for cleaning the corresponding optical sensors and radars on each optical sensor and each radars, wherein the water tank is communicated with the cleaning device through a water pipe, the temperature sensor is arranged on the water tank, the water pump, the heating belt, the heater and the cleaning device are controlled to be started and stopped by the controller, each optical sensor and each radars are respectively provided with an optical sensor and a radar cleaning detection system, the controller starts and stops the optical sensors and the radar cleaning detection systems, the optical sensors and the radar cleaning detection systems detect and judge the cleaning degree of the optical sensors and the radars, the water pump and the cleaning device are started by the controller through the optical sensor and the radar unclean signals, and the optical sensors or radars are cleaned by the cleaning device through the water pump and the cleaning device.
The invention has the advantages that: the optical sensor and the radar can be cleaned at the same time, so that the normal use of the optical sensor and the radar can be maintained.
The cleaner also generates compressed air through the movement of the piston during cleaning, does not need other air sources, and restarts the cleaning device when detecting that the sensor and the radar need cleaning, thereby realizing the cleaning of a single independent or a plurality of optical sensors and the radar, therefore, the sensor and the radar can be ensured to be clean and normally used on the premise that the water tank of the vehicle is easy to be limited, the self-charging quantity is limited and the voltage is low, so that the normal running and the running safety of the vehicle are ensured.
Drawings
Fig. 1 is a schematic view showing the overall structure of an optical sensor for a vehicle and a radar active cleaning device according to an embodiment of the present invention.
Fig. 2 is an exploded view of a combination radar according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a combined radar according to an embodiment of the present invention.
Fig. 4 is an exploded view of a combined optical sensor according to an embodiment of the present invention.
Fig. 5 is a perspective view of a combined optical sensor according to an embodiment of the present invention.
FIG. 6 is a schematic view showing the overall structure of a washer capable of spraying water and automatically blowing air according to the embodiment of the present invention.
FIG. 7 is a schematic view of a water jet of a washer according to an embodiment of the present invention.
FIG. 8 is a schematic diagram of the embodiment of the invention when the cleaner is spraying air.
Fig. 9 is a schematic structural view of another embodiment of the optical sensor and the radar active cleaning device for vehicles according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1
As shown in fig. 1 to 5, the optical sensor and radar active cleaning device for a vehicle includes a water tank 10 with a water pump 101, a temperature sensor 103 and a heater 105, a water pipe 102, a heating belt 104, a controller 20, a plurality of combined optical sensors 40 provided on a vehicle body 60, and a combined radar 30.
As shown in fig. 2 and 3, the combined radar 30 of the present embodiment has a radar 302 mounted on a mounting hole 304 of a stand 305, a nozzle 303 is mounted on another position of the stand 305, and the nozzle 303 is aligned with the radar 302 so as to clean the radar 302.
The nozzle 303 is mounted on the outlet 505 of the cleaner end cap 504, the solenoid valve insert 5033 is connected to the solenoid valve 5034, and the solenoid valve 5034 controls the opening and closing of the cleaner.
The electromagnetic valve control line 5023 and the radar transmission line 3010 are directly connected to the controller control line 206 via the connector 301, so that the connection is convenient, quick and simple.
The solenoid valve 5034 and the washer end cap 504 may be directly combined together, or may include other opening and closing mechanisms.
As shown in fig. 4 and 5, in the combined optical sensor 40 of the present embodiment, the optical sensor 402 is mounted on the mounting hole 404 of the bracket 405, the nozzle 403 is mounted on another position of the bracket 405, and the nozzle 403 is aligned with the optical sensor 402 so as to clean the optical sensor 402.
The nozzle 403 is mounted on the outlet 505 of the cleaner end cap 504, the solenoid valve insert 5033 is connected to the solenoid valve 5034, and the solenoid valve 5034 controls the opening and closing of the cleaner.
The electromagnetic valve control line 5023 and the optical sensor transmission line 4010 are directly connected with the controller control line 206 through the connector 401, so that the connection is convenient, quick and simple.
The solenoid valve 5034 and the washer end cap 504 may be directly combined together, or may include other opening and closing mechanisms.
As shown in fig. 6, 7 and 8, the main body of the washer 50 is a cylinder, which includes a washer end cap 504, a washer housing 5014, and the washer end cap 504 is fixed to the washer housing 5014.
The cleaner end cover 504 is provided with a water inlet channel 5029, one end of the water inlet channel 5029 is provided with a water inlet 5027, water is fed through the water inlet 5027 and is connected with an external water inlet pipe, the other end of the water inlet channel is provided with an electromagnetic valve 5034, and the other end of the water inlet channel is opened or closed through a membrane 5028 of the electromagnetic valve 5034.
The solenoid valve 5034 and the washer end cap 504 may be integrally combined with each other, or may be directly combined with each other.
The water inlet channel 5029 is internally provided with a one-way valve core 5025 and a one-way valve spring 5024, and the one-way valve core 5025 seals the water inlet 5027 by the one-way valve spring 5024, so that the water inlet 5027 can be closed when the electromagnetic valve 5034 does not close the water inlet channel.
The middle of the unidirectional valve core 5025 is further provided with a valve core backflow hole 5026, liquid and an outlet in the water inlet channel 5029 are penetrated, and when the piston moves upwards, liquid in the liquid cavity can flow out from the water inlet 5027 from inside to outside through the valve core backflow hole 5026, so that the piston can be reset.
The cleaner end cover 504 is also provided with a closed outlet area with a cleaner outlet 505, a one-way liquid outlet valve and a one-way air blowing valve are arranged in the outlet area, the one-way liquid outlet valve and the one-way air blowing valve are supported by the mounting seat 501, the space 5031 outside the one-way liquid outlet valve and the one-way air blowing valve are connected into a whole and communicated with the cleaner outlet 505, the inlet 5090 of the one-way liquid outlet valve is communicated with the liquid cavity, the inlet 5091 of the one-way air blowing valve is communicated with a sealing space 5092 formed between the mounting seat 501 and the fixing plate 5032, and the sealing space 5092 is communicated with the inner cavity of the compressed air pipe 5016 through a through hole 50161 at the upper part of the compressed air pipe 5016.
The one-way liquid outlet valve comprises a water spraying valve sleeve 509 and a water spraying valve rod 506, wherein a liquid outlet channel is arranged in the water spraying valve rod, a liquid outlet hole 508 of the liquid outlet channel is arranged on the circumference of the water spraying valve rod, and the water spraying valve sleeve 509 is tightly sleeved on the water spraying valve rod to seal the water outlet hole 508.
The one-way air blowing valve comprises an air blowing valve sleeve 507 and an air blowing valve rod 502, wherein an air outlet channel 502 is arranged in the air blowing valve rod, an air outlet hole 503 of the air outlet channel is arranged on the circumference of the air blowing valve rod, and the air blowing valve sleeve is tightly sleeved on the air blowing valve rod to seal the air outlet hole 503.
In the outlet area, both gas and liquid cannot normally be ejected.
When the pressure of the liquid in the liquid cavity can be used for flushing the resistance of the water spraying valve sleeve 509 during the liquid pumping, the liquid is sprayed out of the water outlet hole 508 and fills the space 5031, and then the liquid is sprayed out of the washer outlet 505, and meanwhile, the liquid in the space 5031 forms pressure on the water spraying valve sleeve 507, so that the compressed gas in the gas cavity is prevented from being sprayed out of the water spraying valve sleeve 507.
When the pumping of the liquid is stopped, the pressure of the liquid in the liquid chamber is reduced, the resistance of the water jet valve sleeve 509 cannot be flushed, the hydraulic pressure of the air jet valve sleeve 507 in the space 5031 is eliminated, and the compressed gas is ejected against the resistance of the air jet valve sleeve 507 and then ejected from the cleaner outlet 505.
The interior of the cleaner shell 5014 is divided into an upper part and a lower part by a piston, the upper part is sealed by a cleaner end cover 504, and the inner cavity of the upper part is communicated with the interior of the cleaner end cover 504 to form a liquid cavity; the bottom of the lower part of the cleaner housing is provided with an inward boss 5030, an air inlet channel 50301 is arranged in the boss 5030, the air inlet channel 50301 is sealed by a one-way air inlet valve, and the air inlet of the air inlet channel is communicated with the ambient atmosphere.
The one-way intake valve of the present embodiment includes: the air inlet diaphragm 5018 and the air inlet seat 5020, wherein a sealing conical surface 5019 is arranged on the bottom surface of the air inlet diaphragm 5018 and aligned with an air inlet hole 5021 on the air inlet seat, the air inlet hole 5021 is communicated with the atmosphere, a negative pressure air inlet hole 5022 is arranged on the air inlet diaphragm 5018 and communicated with an upper air passage and a lower air passage, and the air inlet seat 5020 is fixed in the air inlet passage 50301. When the top surface of the intake diaphragm 5018 is compressed, the sealing cone 5019 seals the intake port 5021 and compresses the gas in the gas chamber and the compressed gas tube 5016. When the gas ejection pressure in the gas chamber drops, the atmosphere pushes up the sealing tapered surface 5019 of the intake diaphragm 5018 from the intake passage 50301 to replenish the air into the compressed gas pipe and the gas chamber through the negative pressure intake port 5022 on the intake diaphragm 5018.
The top surface of the boss 5030 is provided with a groove for fixing the lower end of the compressed air pipe 5016, and the upper part of the compressed air pipe 5016 is limited and sealed by the mounting seat 501 and the fixing plate 5032 of the cleaner end cover 504.
The through hole 50161 at the upper end of the compressed air pipe 5016 is communicated with the sealed space 5092 in the end cover, the air communication hole 5017 is arranged at the lower end, and the air in the air cavity can enter the inner cavity of the compressed air pipe 5016 through the air communication hole 5017, so that an air cavity, the compressed air pipe 5016, the sealed space 5092 and an air injection loop of a one-way air injection valve are formed.
The boss is sleeved with the piston spring 5015, the upper end of the piston spring 5015 is connected with the bottom surface of the piston, and the lower end of the piston spring 5015 is limited by the bottom edge of the inner wall of the cleaner shell, so that the piston spring 5015 can be better positioned.
The piston of this embodiment includes piston ring 5010, piston ring support 5012, and piston ring 5010 passes through the buckle with piston ring support 5012 to be connected, and piston ring 5010, piston ring support 5012 all overlap on compression trachea 5016 and can reciprocate, seal with sealing washer 5011 between piston ring 5010 and the compression trachea 5016, seal by sealing washer 5013 between piston ring 5010 and the purger casing 5014, and sealing washer 5011 and sealing washer 5013 are all installed on sealing washer 5010.
When the washer sprays water, when the water pump receives a control signal to start working, the washing liquid is pumped into the water inlet 5027 of the washer, the one-way valve core 5025 is pushed and the one-way valve spring 5024 is compressed, washing liquid flows in, meanwhile, the electromagnetic valve 5034 is also connected to the control signal to start working, the electromagnetic valve diaphragm moves upwards, the washing liquid enters the washer shell and fills the liquid cavity, then the water spraying valve sleeve 509 is opened at the water outlet of the water spraying valve, the washing liquid is sprayed out from the water spraying valve through the water outlet 505 of the washer, the washing liquid pushes the piston ring to move downwards while the washing liquid is sprayed out, the air in the air cavity is compressed by the piston ring and enters the compressed air pipe 5016 from the vent hole of the compressed air pipe 5016, the air inlet hole is sealed by the sealing conical surface of the air inlet seat due to the air pressure air inlet diaphragm, and when the piston ring reaches the lowest end of the compressed air pipe, the pressure in the compressed air pipe reaches the maximum value. The washing liquid can flow to the outer side of the air blowing valve sleeve to form external pressure on the valve sleeve while spraying, and at the moment, the air valve can not be opened.
When the cleaner blows, the water pump receives the control signal to stop working, the pressure of the washing liquid in the cleaner shell is reduced, the water spraying valve sleeve is closed, no washing liquid is sprayed out of the water spraying valve, and as the pressure of the washing liquid on the outer side of the air blowing valve sleeve is lost, compressed air in the air blowing valve opens the air blowing valve sleeve from the air blowing valve hole, and the compressed air flows out from the air blowing valve and is blown out through the outlet of the cleaner. After the washing liquid pressure in the cleaner shell drops, the sealing conical surface of the air inlet diaphragm is not sealed, the external air of the cleaner flows in from the air inlet hole of the air inlet seat, then enters the air cavity of the cleaner shell through the negative pressure air inlet hole, the one-way valve spring at the water inlet end of the cleaner end cover pushes the one-way valve core to move, the one-way valve is closed, but the washing liquid can slowly flow out through the valve core backflow hole, and at the moment, the piston ring moves to the initial position under the action of the piston ring spring.
As shown in fig. 1, the water tank 10 with the water pump 101, the temperature sensor 103, and the heater 105 is provided at a proper position on the vehicle body 60.
The heating strip 104 is closely attached to the water pipe 102, the water tank 10 is connected to the water pipe 102 extending over the vehicle body, and is connected to the washer inlet 5027 of each optical sensor and the washer inlet 5027 of each radar from each node of the water pipe 102.
The controller 20 is combined with the optical sensor cleaning and detecting system 201 and the radar cleaning and detecting system 202, and is connected with the control line 206 distributed over the vehicle body 60, and then is connected with the plug-in connector 401 of each combined optical sensor 40 from each node of the control line 206 and the plug-in connector 301 of each combined radar 30, so that the controller 20 can receive signals of each optical sensor and radar, and can control the electromagnetic valve, the optical sensor and the radar, and the connection is convenient and quick, and the wiring is simple, and three paths of control lines 206 distributed in front, middle and rear of the vehicle body 60 are adopted in the embodiment.
The controller 20 is also connected to the temperature sensor 103 via a control line 203, to the water pump 101 via a control line 204, and to the heater 105 via a control line 205 to control the on and off of the water pump 101, the heating belt 104, and the heater 105.
When the temperature sensor detects that the temperature is lower than the set temperature, the washing liquid can freeze to affect the fluidity, the controller 20 will start the heater 105 to heat the washing liquid in the water tank 10, and start the heating belt 104 to heat the washing liquid in the water pipe 102, so as to keep the good fluidity of the washing liquid.
The controller 20 in this embodiment instructs to activate the optical sensor cleaning detection system 201 or the radar cleaning detection system 202 to detect and determine the degree of cleaning of the optical sensor or the radar, and transmits a signal whether the optical sensor or the radar is cleaned or not to the controller 20. If the output signal of the optical sensor or the radar cleaning detection system is unclean, the controller 20 receives the signal and then sends out a command for opening the water pump 101 and the electromagnetic valve 5034 of the optical sensor cleaner or the electromagnetic valve 5034 of the radar cleaner through the control line 204 and the control line 206, the water pump 101 pumps the washing liquid out of the water tank 10 and sprays the washing liquid onto the optical sensor 402 or the radar 302 through the nozzle 403 of the optical sensor cleaner or the nozzle 303 of the radar cleaner, so that the water pump is closed after the optical sensor 402 or the radar 302 is cleaned; the stored compressed air is then generated by the movement of the piston during cleaning by the cleaning device and is blown by the nozzle to dry the optical sensor 402 or the radar 302.
Of course, the optical sensor cleaning detection system 201 or the radar cleaning detection system 202 may be disposed in the optical sensor 402 or the radar 302, or may be disposed independently.
Of course, the nozzle 303 and the radar 302 may be separately provided; the nozzle 403 and the optical sensor 402 may also be provided separately.
Although names of signal lines, control lines, and the like appearing in the above description are not uniform, those of ordinary skill in the art will understand that in both control lines and circuit lines, these lines are carriers for transmitting signals, currents, and thus these names do not constitute a particular limitation to these lines.
The working process of the optical sensor and the radar active cleaning device for the vehicle comprises the following steps: firstly, the controller 20 sends out a cleaning detection command of the optical sensor and the radar to each of the optical sensor cleaning detection system 201 and the radar cleaning detection system 202 at regular time or sequentially, the optical sensor cleaning detection system and the radar cleaning detection system start to detect the optical sensor and the radar after obtaining the command, and judge whether each of the optical sensor and the radar is clean or not and send the cleaning condition of each of the optical sensor and the radar back to the controller 20, if the optical sensor 402 or the radar 302 is judged not to be clean, the controller 20 sends out a command of starting the water pump 101 and the washer nozzle 403 or the washer nozzle 303, the water pump 101 pumps the washing liquid out of the water tank, and the washing liquid is sprayed onto the optical sensor 402 or the radar 302 through the nozzle, so that the optical sensor 402 and the radar 302 are cleaned, and then the stored compressed air is blown by the nozzle during the cleaning of the washer.
Example 2
As shown in fig. 9, the controller 20 in embodiment 1 is further connected to the vehicle-mounted radar data processor 70 and the vehicle-mounted image processor 80, and when the vehicle-mounted radar data processor 70 or the vehicle-mounted image processor 80 finds that the radar 302 or the optical sensor 402 is out of order, a command is issued to the controller 20, the controller 20 restarts the cleaning process of cleaning the optical sensor 402 or the radar 302, and then the stored compressed air generated by the movement of the piston during cleaning by the cleaner is blown by the nozzle to blow-dry the optical sensor 402 and the radar 302. The cleaning operation is similar to that of embodiment 1 except that the start-up cleaning signal is sent out by the optical sensor cleaning detection system 201 and the radar cleaning detection system 202 to become the in-vehicle image processor 80 and the radar data processor 70, and the rest is identical to embodiment 1.
Claims (2)
1. An active cleaning device for an optical sensor and radar for a vehicle, characterized by: the system comprises a water tank with a water pump, a temperature sensor and a heater, a controller, a plurality of optical sensors and radars arranged on a vehicle body and a cleaner for cleaning the corresponding optical sensors and radars, wherein the water tank is communicated with the cleaner through a water pipe; the cleaning detection system of the optical sensor comprises a standard picture database and a picture difference discriminator, wherein the standard picture database records standard pictures recorded when the optical sensor is normal under the standard condition, the picture difference discriminator discriminates the pictures obtained when the optical sensor detects from the standard pictures, determines whether the optical sensor needs cleaning or not, and sends a signal that the optical sensor needs cleaning to a controller; the radar cleaning detection system comprises a standard detection database and a data difference discriminator, wherein the standard detection database records standard data detected when the radar is normal under standard conditions, the data difference discriminator discriminates the data obtained when the radar is detected with the standard data, determines whether the radar needs cleaning or not, and sends a signal that the radar needs cleaning to a controller; the cleaner comprises:
A cleaner body comprising:
The cavity is divided into a liquid cavity and a gas cavity by the piston, and a liquid inlet of the liquid cavity is communicated with a liquid cavity of the cavity and is controlled to be on-off by the control valve; the air inlet of the air cavity is connected with the atmosphere through a one-way air inlet valve;
the elastic return piece is arranged in the gas cavity, one end of the elastic return piece is connected with the wall of the gas cavity, and the other end of the elastic return piece is connected with the piston;
the inlet of the one-way air outlet valve is communicated with the air cavity, and the air outlet of the one-way air outlet valve is communicated with the outlet;
the inlet of the one-way liquid outlet valve is communicated with the liquid outlet of the liquid cavity, and the liquid outlet of the one-way liquid outlet valve is communicated with the outlet;
When the liquid cavity is filled with liquid, the liquid opens the one-way liquid outlet valve to spray the liquid from the outlet, and simultaneously pushes the piston to compress the gas in the gas cavity, the elastic return piece is compressed, and the gas in the gas cavity is pressurized; when the liquid stops entering, the one-way air outlet valve is opened to spray compressed gas from the outlet, meanwhile, the elastic restoring piece pushes the piston to reset, the pressure of the gas in the gas cavity is reduced, and the air inlet cavity is used for air inlet from the one-way air inlet valve; the one-way liquid outlet valve comprises a water spraying valve sleeve and a water spraying valve rod, a liquid outlet channel is arranged in the water spraying valve rod, a water outlet of the liquid outlet channel is arranged on the circumference of the water spraying valve rod, and the water spraying valve sleeve is tightly sleeved on the water spraying valve rod to seal the water outlet hole; the one-way air outlet valve comprises an air injection valve sleeve and an air injection valve rod, an air outlet channel is arranged in the air injection valve rod, an air outlet of the air outlet channel is arranged on the circumference of the air injection valve rod, the air injection valve sleeve is tightly sleeved on the air injection valve rod to seal the air outlet hole, an outlet area is further arranged on the cavity, the one-way air outlet valve and the one-way liquid outlet valve are arranged in the cavity, the space outside the water injection valve and the air injection valve are connected into a whole, an ejection port is arranged, liquid in the liquid cavity pushes away the one-way liquid outlet valve to fill the outlet area and is ejected from the ejection port, the pressure is increased outside the one-way air outlet valve, meanwhile, the piston is pushed to compress the air in the air cavity, the elastic return piece is compressed, and the air pressure in the air cavity is increased but does not reach to open the air injection valve; when the liquid stops entering, the liquid pressure in the outlet area is reduced, the pressure in the gas cavity breaks through the resistance of the air injection valve to spray compressed gas, and water drops on the cleaned object are blown dry; the air cavity is communicated with the inlet of the one-way air outlet valve of the outlet area through a compressed air pipe, the compressed air pipe is arranged in the middle of the cavity, and the piston is sleeved on the compressed air pipe; the one-way intake valve includes: the air inlet diaphragm and the air inlet seat are provided with sealing conical surfaces on the bottom surface of the air inlet diaphragm, the sealing conical surfaces are aligned with air inlets on the air inlet seat, the air inlets are communicated with the atmosphere, the air inlet diaphragm is provided with negative pressure air inlets which are communicated with an upper air passage and a lower air passage, and the air inlet seat is fixed in the air inlet passage.
2. The active cleaning device for automotive optical sensors and radars as set forth in claim 1, wherein: the optical sensor and radar cleaning detection system are turned on and off by a controller manually or by a set program.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811573907.1A CN111348002B (en) | 2018-12-21 | 2018-12-21 | Active cleaning device for optical sensor and radar for vehicle |
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| CN201811573907.1A CN111348002B (en) | 2018-12-21 | 2018-12-21 | Active cleaning device for optical sensor and radar for vehicle |
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| CN111346859B (en) * | 2018-12-21 | 2024-11-01 | 宁波恒帅股份有限公司 | Can spray water and purger of automatic blowing |
| US11913852B2 (en) * | 2020-09-01 | 2024-02-27 | Ford Global Technologies, Llc | Sensor system cleaning with valve testing |
| CN115090592A (en) * | 2022-06-29 | 2022-09-23 | 华域视觉科技(上海)有限公司 | Cleaner, cleaning method and vehicle with sensor |
| CN117784027B (en) * | 2024-02-27 | 2024-05-14 | 泰兴市依科攀船舶设备股份有限公司 | Electric lifting rotary radar seat platform |
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