CN112477760B - Water mist removing method and equipment and waterproof and demisting system - Google Patents
Water mist removing method and equipment and waterproof and demisting system Download PDFInfo
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- CN112477760B CN112477760B CN202011281669.4A CN202011281669A CN112477760B CN 112477760 B CN112477760 B CN 112477760B CN 202011281669 A CN202011281669 A CN 202011281669A CN 112477760 B CN112477760 B CN 112477760B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/06—Rear-view mirror arrangements mounted on vehicle exterior
- B60R1/0602—Rear-view mirror arrangements mounted on vehicle exterior comprising means for cleaning or deicing
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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
Abstract
The application provides a water mist removing method, equipment and a waterproof and demisting system, wherein the method comprises the following steps: video data are collected by video collection equipment; and when the target object is determined to need to be subjected to water mist removal treatment based on the collected video data, controlling the electromagnetic wave emitter to emit electromagnetic waves to the target object so as to remove water mist on the surface of the target object. The method can improve the demisting efficiency and optimize the demisting effect.
Description
Technical Field
The application relates to the field of monitoring equipment and the field of automobiles, in particular to a water mist removing method and equipment and a waterproof and demisting system.
Background
At present, to the water smoke on door window surface, generally adopt hot-blast, resistance wire embedding glass, microwave heating or the realization of other heating to remove the water smoke, but traditional scheme heating rate is usually slower, hardly improves glass's temperature fast in natural environment, and it is lower to remove water smoke efficiency, and the effect is relatively poor. In addition, the traditional scheme is mainly to get rid of the water smoke of door window internal surface, to the water smoke of door window surface, can't get rid of.
Disclosure of Invention
In view of the above, the present application provides a method, an apparatus and a system for removing water mist.
According to a first aspect of embodiments of the present application, there is provided a defogging method for a video capture device in a defogging system, the defogging system further including an electromagnetic wave emitter, the method including:
video data are collected by video collection equipment;
when the video acquisition equipment determines that the target object needs to be subjected to water mist removal treatment based on the acquired video data, the electromagnetic wave emitter is controlled to emit electromagnetic waves to the target object so as to remove water mist on the surface of the target object.
According to a second aspect of embodiments of the present application, there is provided a video capture apparatus, comprising:
an acquisition unit configured to acquire video data;
a determination unit configured to determine whether the target object needs to be subjected to defogging processing based on the video data collected by the collection unit;
a control unit configured to control the electromagnetic wave transmitter to transmit the electromagnetic wave to the target object to remove the water mist on the surface of the target object.
According to a third aspect of the embodiments of the present application, there is provided an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the video acquisition method of the first aspect when executing the program stored in the memory.
According to a fourth aspect of embodiments of the present application, there is provided a non-transitory computer-readable storage medium having stored therein a computer program, which when executed by a processor implements the video capturing method of the first aspect.
According to a fifth aspect of embodiments herein, there is provided a computer program stored on a machine-readable storage medium and which, when executed by a processor, causes the processor to carry out the video capturing method of the first aspect.
According to a sixth aspect of embodiments of the present application, there is provided a waterproof defogging system including: video acquisition equipment and an electromagnetic wave transmitter; wherein:
a video capture device configured to capture video data;
the video acquisition equipment is further configured to control the electromagnetic wave emitter to emit electromagnetic waves to the target object to remove the water mist on the surface of the target object when the target object is determined to need to be subjected to the water mist removal treatment based on the acquired video data.
According to the method for removing the fog, whether the target object needs to be subjected to water fog removal processing is determined through the video acquisition equipment based on the acquired video data, when the water fog removal processing is determined to be needed, the electromagnetic wave emitter is controlled to emit the electromagnetic waves to the target object, the water fog removal of the target object is achieved by means of the resonance of the electromagnetic waves and the water fog on the surface of the target object, the fog removal efficiency is improved, the inner surface and the outer surface of the target object can be subjected to fog removal, and the fog removal effect is optimized.
Drawings
FIG. 1 is a schematic flow diagram illustrating a method of removing water mist in accordance with an exemplary embodiment of the present application;
FIG. 2A is a schematic diagram of a portion of a water and mist removal system according to an exemplary embodiment of the present application;
FIG. 2B is a schematic illustration of a front view of a portion of a waterproof defogging system configured to perform a waterproof function in accordance with an exemplary embodiment of the present application;
FIG. 2C is a schematic side view of a portion of a water and mist protection system for performing a water protection function in accordance with an exemplary embodiment of the present application;
FIGS. 2D and 2E are schematic views of a lower and upper reservoir as shown in an exemplary embodiment of the present application;
fig. 3 is a schematic structural diagram of a video capture device according to an exemplary embodiment of the present application;
fig. 4 is a schematic diagram of a hardware structure of an electronic device according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In order to make the technical solutions provided in the embodiments of the present application better understood and make the above objects, features and advantages of the embodiments of the present application more comprehensible, the technical solutions in the embodiments of the present application are described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a flow chart of a method for removing water mist according to an embodiment of the present disclosure is shown, wherein the method for removing water mist can be applied to a video capture device in a water mist prevention system, the water mist prevention system can further include an electromagnetic wave emitter, as shown in fig. 1, the method for removing water mist can include the following steps:
it should be noted that, the sequence numbers of the steps in the embodiment of the present application do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation to the implementation process of the embodiment of the present application.
And S100, video data are collected by video collection equipment.
In the embodiment of the present application, the waterproof defogging system may include, but is not limited to, an on-vehicle waterproof defogging system for preventing and defogging a window glass (e.g., a windshield) or a waterproof defogging system deployed in a monitoring front-end device (e.g., an IPC (Internet Protocol Camera)) for preventing and defogging an outside lens of the monitoring front-end device.
For an exemplary vehicle-mounted waterproof defogging system, the video capture device may be a vehicle event recorder, or other vehicle-mounted camera; for a waterproof defogging system deployed in a monitoring front-end device, the video acquisition device may be the monitoring front-end device
And step S110, when the video acquisition equipment determines that the target object needs to be subjected to water mist removal treatment based on the acquired video data, controlling the electromagnetic wave emitter to emit electromagnetic waves to the target object so as to remove water mist on the surface of the target object.
In the embodiment of the present application, the target object may include, but is not limited to, a window glass (for an in-vehicle waterproof defogging system) or an outer lens of a monitoring front-end device.
The video acquisition equipment can determine whether the target object needs to be subjected to water mist removal treatment or not based on the acquired video data.
For example, considering that the fog removal processing is usually required only when the outer surface of the target object is attached with water drops or the inner surface of the target object is attached with water mist, and when the outer surface of the target object is attached with water drops or the inner surface of the target object is attached with water mist, the target object in the video picture is relatively blurred, that is, the degree of blurring is relatively high, so that the video capture device may determine whether the target object needs to perform the fog removal processing (including the water drops or/and the fog on the inner and outer surfaces of the target object) based on the degree of blurring of the target object in the video data.
In one example, the video capture device determining that the target object needs to be defogged based on the video data may include:
the video acquisition equipment determines the fuzzy degree of a target object based on the acquired video data;
when the fuzzy degree of the target object is higher than a first preset threshold value, the video acquisition equipment determines that the defogging treatment is required.
For example, the video capture device may determine a blur degree of the target object based on the captured video data, and when the blur degree of the target object is higher than a preset threshold (which may be set according to an actual scene and is referred to herein as a first preset threshold), the video capture device determines that the defogging process needs to be performed on the target object.
It should be noted that, in the embodiment of the present application, it is not limited to determining whether or not the water mist removal processing needs to be performed based on the degree of blurring of the target object. For example, whether the water fog removal treatment is needed or not can be determined by detecting whether water fog exists in the designated area or not based on the collected video data.
For example, taking the waterproof demisting for the windshield of the vehicle as an example, a designated area in the video capture screen (the designated area may be a front windshield area where the driver observes traffic conditions ahead during driving) may be determined in advance, and whether water mist exists in the designated area may be determined based on the captured video data. If so, determining that water mist removal treatment is required; otherwise, determining that the water mist removing treatment is not needed.
In this case, when the water mist removing process is performed, the water mist removing process may be performed on the predetermined region.
In the embodiment of the application, when the video acquisition equipment determines that the target object needs to be subjected to water mist removal treatment based on the acquired video data, the video acquisition equipment can control the electromagnetic wave emitter to emit electromagnetic waves to the target object, and the water mist vibrates through the electromagnetic waves, so that water drops attached to the outer surface of the target object and the mist attached to the inner surface of the target object are separated from the surface of the target object, and the effect of removing the water mist from the target object is achieved.
Therefore, in the method flow shown in fig. 1, the water mist on the surface of the target object is vibrated by the electromagnetic wave in a manner of emitting the electromagnetic wave to the target object, so that the water mist of the target object is removed, the defogging efficiency is improved, and the inner and outer surfaces of the target object can be defogged, so that the defogging effect is optimized.
As a possible embodiment, in step S110, the controlling, by the video capture device, the electromagnetic wave emitter to emit the electromagnetic wave to the target object may include:
the video acquisition equipment controls the electromagnetic wave transmitter to transmit electromagnetic waves to the target object, adjusts the transmitting frequency of the electromagnetic wave transmitter based on the decreasing value of the fuzzy degree of the target object in the preset unit time, and till the decreasing value of the fuzzy degree of the target object in the preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits the electromagnetic waves based on the adjusted transmitting frequency;
when the fuzzy degree of the target object is lower than a third preset threshold value, the video acquisition equipment controls the electromagnetic wave emitter to stop emitting the electromagnetic waves, and the third preset threshold value is smaller than the first preset threshold value.
Illustratively, it is considered that when the electromagnetic wave reaches resonance with the mist on the surface of the target object, the mist indicated by the target object usually rapidly falls off the surface of the target object, and further, the degree of blur of the target object decreases relatively rapidly (the rate of decrease of the degree of blur can be represented by the decrease value of the degree of blur per unit time).
Accordingly, it may be determined whether the electromagnetic wave is in resonance with the water mist on the surface of the target object based on a decrease value of the degree of blur of the target object in a preset unit time (which may be set according to an actual scene), and when the resonance is not reached, the transmission frequency of the electromagnetic wave transmitter may be adjusted until the decrease value of the degree of blur of the target object in the preset unit time reaches a preset threshold (referred to as a second preset threshold herein), and it is determined that the electromagnetic wave is in resonance with the water mist of the target object, at which time, the electromagnetic wave transmitter may be controlled to transmit the electromagnetic wave to the target object based on the transmission frequency, and the water mist on the surface of the target object may be rapidly removed by using the resonance of the electromagnetic wave with the water mist on the surface of the target object.
It should be noted that, in the embodiment of the present application, the transmission frequency of the electromagnetic wave transmitter may also be adjusted based on the collected video data, and the vibration state (vibration amplitude, vibration frequency, and the like) of the water mist after the electromagnetic wave is transmitted to the target object. Since the water mist reaches the most intense vibration level when the electromagnetic wave and the water mist resonate, the emission frequency of the water mist can be gradually increased (or decreased) with the default emission frequency of the electromagnetic wave as an initial value, and the change of the vibration state of the water mist can be analyzed to find the emission frequency at which the water mist reaches the most intense vibration level, and the electromagnetic wave emission can be performed based on the emission frequency.
In one example, the video capture device controlling the electromagnetic wave transmitter to transmit the electromagnetic wave to the target object may include:
the video acquisition equipment controls the electromagnetic wave transmitter to respectively transmit electromagnetic waves to different areas of the target object;
for any region, the video acquisition equipment adjusts the transmitting frequency of the electromagnetic wave transmitter based on the decreasing value of the fuzzy degree of the region in the preset unit time until the decreasing value of the fuzzy degree of the region in the preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits the electromagnetic wave based on the adjusted transmitting frequency.
For example, considering that the water mist attachment conditions may be different (such as different mist thicknesses and different water droplet sizes) in different areas of the target object, when the water mist removal is implemented through resonance between the electromagnetic wave and the water mist, the frequency of the emitted electromagnetic wave may be different when the water mist removal is performed on different areas of the target object.
Accordingly, the video acquisition device can control the electromagnetic wave emitter to emit electromagnetic waves to different areas of the target object respectively, that is, the video acquisition device can control the electromagnetic wave emitting direction and the size of the electromagnetic wave emitter to realize fixed-point quantitative emission.
For any region, the video acquisition equipment can determine whether the electromagnetic wave is in resonance with the water mist on the surface of the target object or not based on the reduction value of the fuzzy degree of the region in the preset unit time, and when the resonance is not reached, the transmission frequency of the electromagnetic wave transmitter is adjusted until the reduction value of the fuzzy degree of the region in the preset unit time reaches a second preset threshold value, the electromagnetic wave is determined to be in resonance with the water mist of the region, at the moment, the electromagnetic wave transmitter is controlled to transmit the electromagnetic wave to the region based on the transmission frequency, and the resonance of the electromagnetic wave and the water mist on the surface of the target object is utilized to quickly remove the water mist of the region.
For example, when the video capture device determines that the degree of blur of the target object is lower than a preset threshold (which may be set according to an actual scene and referred to herein as a third preset threshold), the electromagnetic wave emitter may be controlled to stop emitting electromagnetic waves, and the round of water mist removal for the target object is ended.
When water mist removal is performed in different regions, after the water mist removal of any region is completed according to the above manner, the video acquisition equipment can control the electromagnetic wave emitter to emit electromagnetic waves to other rest regions until the water mist removal is completed in each region, and the water mist removal for the target object in the round is completed.
As a possible embodiment, the waterproof defogging system in the embodiment of the present application may further include a controller, a power supply, positive and negative electrode plates, an upper protection cover, and a lower protection cover, where the positive and negative electrode plates are respectively located on upper and lower sides of an outer surface of the target object, and are respectively located in the upper and lower protection covers, and are respectively connected to positive and negative electrodes of the power supply, and the outer surface of the target object is covered with a conductive coating, and the conductive coating is connected to the positive electrode or the negative electrode of the power supply;
the above-mentioned water mist removing method may further include:
when the video acquisition equipment determines that the video acquisition equipment is in a rainy state currently based on the acquired video data, a control signal is sent to the controller, so that the controller controls the power supply to respectively supply power to the positive and negative electrode plates based on the control signal, and the positive and negative electrode plates form an electric field on the outer side of the outer surface of the target object.
Illustratively, it is contemplated that obtaining information through a target object may be affected when in a raining state.
For example, when the target object is a windshield, rain adheres to the windshield and seriously affects the driver's sight line in the case of rain.
For another example, taking a target object as an outer lens of the monitoring front-end device as an example, when raining, rainwater attached to the outer lens may affect the definition of an actual scene object in a video captured by the monitoring front-end device.
At present, in the windshield, the waterproof measure in the rainy state is to remove water drops attached to the outer surface of the windshield by the wiper blade, but the wiper blade is easy to block the sight of a driver and distract the driver when in operation.
For monitoring front-end equipment, under the raining state, an effective way for removing water drops attached to the outer lens is not available at present.
In the embodiment of the application, the cloud layers are considered to generate charges when being rubbed, and some of the cloud layers are positively charged, some of the cloud layers are negatively charged, and some of the cloud layers are neutralized. However, due to the flow of air, the electric charge is not neutralized by a hundred percent, there are places with more negative electric charges and places with more positive electric charges, so that the rainwater generally has electric charges (partially positive electric charges and partially negative electric charges) when falling on the outer surface of the target object.
Correspondingly, the positive and negative electrode plates can be arranged on the upper side and the lower side of the outer surface of the target object, when the target object is in a rainy state, power is respectively supplied to the positive and negative electrode plates through the power supply, and an electric field is formed on the outer surface of the target object through the positive and negative electrode plates, so that rainwater falling to the outer surface of the target object moves upwards or downwards under the action of the electric field force, the rainwater is prevented from being attached to the outer surface of the target object, and the waterproof effect on the target object is realized.
In addition, considering that neutral water droplets may be formed by neutralizing positive and negative charges during the falling of charged rainwater, in order to prevent the neutral water droplets from adhering to the outer surface of the target object, a conductive coating may be coated on the outer surface of the target object, and the conductive coating may be connected to the positive electrode or the negative electrode of the power supply, so that, when the power supply starts supplying power, the conductive coating may charge the water droplets falling on the outer surface of the target object with positive charges (the conductive coating is connected to the positive electrode of the power supply) or negative charges (the conductive coating is connected to the negative electrode of the power supply), and further, the water droplets may move upward or downward under the action of the electric field force, so that the water droplets do not adhere to the outer surface of the target object.
For example, in order to enhance the safety of the waterproof function, the positive and negative electrode plates may be disposed in a protective cover to prevent electric leakage.
The shield may also be insulated from the electrically conductive part of the target object (for windshields, a metallic material part of the vehicle) by an insulating material to avoid electrical leakage.
The conductive coating on the outer surface of the target object is isolated from the conductive part of the target object by an insulating material so as to avoid electric leakage.
In one example, the above-mentioned waterproof defogging system may further include an upper water storage tank and a lower water storage tank, the upper water storage tank is located below the upper shield, the lower water storage tank is located above the lower shield, and the neutralizing power generation device is connected with the upper water storage tank and the lower water storage tank through wires respectively.
Exemplarily, in order to make full use of the electric charge carried by the rainwater, a water storage tank can be arranged between the positive electrode plate and the negative electrode plate in the waterproof demisting system, the water storage tank comprises an upper water storage tank below the upper protective cover and a lower water storage tank above the lower protective cover, and charged water drops can move upwards or downwards under the action of an electric field force to enter the corresponding water storage tank.
The upper and lower water storage tanks can respectively pass through leads and neutralization power generation equipment, and charges carried by water drops entering the upper and lower water storage tanks enter the neutralization power generation equipment through the leads to carry out neutralization power generation.
The neutralization power generation device can charge the power supply by neutralizing positive and negative charges to generate power.
It should be noted that, in the embodiment of the present application, for the water droplets entering the water storage tank, the water droplets may be drained to the outside of the two sides of the target object by setting a drainage measure.
For example, for the lower water storage tank, the bottom of the lower water storage tank can be set to be high in the middle and low on two sides, or one side of the lower water storage tank is high and one side of the lower water storage tank is low, so that water drops can flow to the lower two sides or one side of the lower water storage tank after entering the lower water storage tank, and drainage of the water drops out of the two sides of the target object is achieved.
For the upper water storage tank, a rainwater collector can be arranged on one side or two sides of the upper water storage tank, and a negative pressure is formed by adopting an air extractor, so that water drops entering the upper water storage tank flow to one side or two sides under the action of the negative pressure, and the water drops are guided out of two sides of a target object.
In order to enable those skilled in the art to better understand the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described below with reference to specific examples.
In this embodiment, a description will be given taking an example of performing a water-proof defogging process on a windshield of a vehicle, that is, a target object is the windshield.
Fig. 2A is a schematic structural diagram of a part for implementing a water mist removal function in a water mist removal and prevention system according to an embodiment of the present disclosure, as shown in fig. 2A, in which a video capture device is a tachograph, and an electromagnetic wave transmitter includes a frequency regulator, a high-frequency oscillator, and an electrical coil.
In this embodiment, the automobile data recorder can shoot the window glass image and has the function of image analysis and recognition.
When rainwater adheres to the outer surface of a windshield (glass for short) or condensed water vapor on the inner surface of the glass forms water mist to obscure the sight, the automobile window glass image shot by the automobile data recorder has higher blurring degree.
At this time, the automobile data recorder can send a signal to the frequency regulator, the frequency regulator is triggered to send a frequency regulating signal to the high-frequency oscillator, and the high-frequency oscillator controls the electric coil to generate a high-frequency changing current to form electromagnetic waves. The electromagnetic wave drives the water mist on the glass to vibrate, and when the frequency of the electromagnetic wave reaches the resonance frequency of the water mist, the water mist can vibrate violently.
Exemplarily, can judge the vibrations amplitude change of rainwater through the intelligent analysis function of driving record appearance, judge whether reach resonant frequency to control frequency regulator makes the frequency of electromagnetic wave reach the resonant frequency of rainwater, and the rainwater takes place strong vibrations, and then breaks away from the glass surface, volatilizees in the air, at the water droplet of windshield surface adhesion, also can acutely vibrate, under the effect of driving air current, can be blown away from the glass surface.
The automobile data recorder adjusts the frequency regulator to send out electromagnetic waves with different frequencies by analyzing the water mist removing effect on the glass, so that the frequency of the electromagnetic waves is close to the resonance frequency of the water mist. The automobile data recorder can automatically analyze and adjust the emission frequency of electromagnetic waves, so that the intelligent and quick demisting function is achieved.
Illustratively, the electromagnetic wave transmitter is installed below the automobile data recorder and is controlled by the cloud deck to rotate, and the automobile data recorder can control the rotation of the cloud deck, adjust the transmission direction of electromagnetic waves, control the size of electromagnetic waves, realize fixed point quantitative transmission.
Because the emission direction is towards the car window glass directional sky, and the electromagnetic wave has very strong penetrability to glass, consequently, the electromagnetic wave can pass glass, is absorbed by the rainwater, and the electromagnetic wave of transmission also can give out sky, can not cause the injury to the human body.
As shown in fig. 2B and 2C, a schematic structural diagram of a portion for implementing a waterproof function in a waterproof and defogging system provided in an embodiment of the present application (fig. 2B is a schematic front view, and fig. 2C is a schematic side view) is shown, and as shown in fig. 2B and 2C, in this embodiment, the portion for implementing a waterproof function in the waterproof and defogging system may include upper and lower positive and negative electrode plates, upper and lower shields, upper and lower water storage tanks, an integrated power generation device, and a power supply.
The positive electrode plate, the upper protective cover and the upper water storage tank are arranged on the upper side of the outer surface of the windshield of the automobile. The positive electrode plate is arranged in the upper protective cover, electric leakage is avoided, the positive electrode plate is connected with a power supply through a lead, and the upper water storage tank is arranged below the upper protective cover.
The negative electrode plate, the lower water storage tank and the lower protective cover are arranged below the windshield. The negative electrode plate is arranged in the lower protective cover to avoid electric leakage and is connected with the outside through a lead, and the lower water storage tank is arranged above the lower protective cover.
The positive pole of the power supply is connected with the positive electrode plate, the negative pole of the power supply is connected with the negative electrode plate, and when the power supply supplies power to the positive and negative electrode plates, the positive and negative electrode plates form an electric field above the outer surface of the windshield.
The upper and lower protective covers and the metal material of the automobile are isolated by insulating materials, so that electric leakage is avoided.
When the automobile data recorder detects that the automobile data recorder is in a raining state at present, a signal can be sent to the controller, and the controller starts an electric field system of the windshield.
After the electric field is formed, in the natural environment, rainwater has positive charges, negative charges and neutrality. After entering the electric field, the water drops with positive charges move downwards under the action of the electric field force and enter a lower water storage tank; the water drops with negative charges move upwards under the action of the electric field force and enter the upper water storage tank.
For example, the electric field strength can be adjusted according to the actual application condition, so that the water drops with negative charges can move upwards to enter the upper water storage tank.
Exemplary, schematic views of the lower and upper reservoirs may be as shown in fig. 2D and 2E, respectively. Wherein:
as shown in fig. 2D, the upper and lower planes (i.e. the planes ABCD and EFGH) of the lower reservoir are perpendicular to the direction of the electric field (or have a small included angle, such as an included angle of 5-10 °), and the upper plane is designed with an opening (the size of the opening is smaller than or equal to the size of the upper plane, taking the size of the opening and the size of the upper plane as an example in the figure), so that the positively charged water droplets move downward under the action of the electric field force and enter the lower reservoir through the opening of the upper plane of the lower reservoir.
As shown in fig. 2E, the upper and lower planes (i.e. the plane IJKL and the plane MNOP) of the upper water storage tank are perpendicular to the direction of the electric field (or have a smaller included angle, such as an included angle of 5 ° to 10 °), and the lower plane is designed with an opening (the size of the opening is smaller than or equal to that of the lower plane, and the size of the opening is the same as that of the lower plane in the figure), so that the water drops with negative charges move upwards under the action of the electric field force and enter the upper water storage tank through the opening of the lower plane of the upper water storage tank.
Wherein, the upper and lower water storage tanks are designed by adopting an insulating material.
Optionally, for the lower water storage tank, the bottom of the lower water storage tank can be set to be high in the middle and low on two sides, or one side of the lower water storage tank is high on one side, so that after the water drops enter the lower water storage tank, the water drops can flow to the lower two sides or one side of the lower water storage tank, and the water drops are guided out of the two sides of the target object.
For the upper water storage tank, a rainwater collector can be arranged on one side or two sides of the upper water storage tank, and a negative pressure is formed by adopting an air extractor, so that water drops entering the upper water storage tank flow to one side or two sides under the action of the negative pressure, and the water drops are guided out of two sides of a target object.
In this embodiment, the surface of the window glass may be coated with a transparent conductive coating, the conductive coating is connected to the positive electrode of the power supply and not connected to the negative electrode, and the conductive coating is isolated from the vehicle by an insulating material to prevent electrical leakage.
When neutral water drops fall on the conductive coating of the car window glass, positive charges on the coating can be transferred to the water drops, the water drops carry the positive charges, move downwards under the action of the electric field force and enter a lower water storage tank.
The charges in the upper and lower water storage tanks enter the neutralization power generation equipment through the conducting wires to carry out neutralization power generation so as to charge the power supply. The water after neutralization or the excess water is directly drained.
The methods provided herein are described above. The following describes the apparatus provided in the present application:
referring to fig. 3, a schematic structural diagram of a video capture device provided in an embodiment of the present application is shown, where the video capture device may be applied to a water and fog proofing system, and as shown in fig. 3, the video capture device may include:
an acquisition unit 310 configured to acquire video data;
a determination unit 320 configured to determine whether the target object needs to be subjected to defogging processing based on the video data acquired by the acquisition unit;
a control unit 330 configured to control the electromagnetic wave transmitter to transmit the electromagnetic wave to the target object to remove the water mist on the surface of the target object.
In a possible embodiment, the determining unit 320 is specifically configured to determine a degree of blur of the target object based on the acquired video data; and when the fuzzy degree of the target object is higher than a first preset threshold value, determining that the defogging treatment is required.
In one possible embodiment, the control unit 330 is specifically configured to control the electromagnetic wave transmitter to transmit the electromagnetic wave to the target object, and adjust the transmission frequency of the electromagnetic wave transmitter based on the decrease value of the degree of blur of the target object in the preset unit time until the decrease value of the degree of blur of the target object in the preset unit time reaches a second preset threshold value when the electromagnetic wave transmitter transmits the electromagnetic wave based on the adjusted transmission frequency; and when the fuzzy degree of the target object is lower than a third preset threshold value, controlling the electromagnetic wave emitter to stop emitting the electromagnetic waves, wherein the third preset threshold value is smaller than the first preset threshold value.
In a possible embodiment, the control unit 330, in particular configured to control the electromagnetic wave transmitter to transmit the electromagnetic wave to different regions of the target object, respectively;
for any region, the video acquisition equipment adjusts the transmitting frequency of the electromagnetic wave transmitter based on the decrease value of the fuzzy degree of the region in the preset unit time until the decrease value of the fuzzy degree of the region in the preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits the electromagnetic wave based on the adjusted transmitting frequency.
In one possible embodiment, the waterproof defogging system further comprises a controller, a power supply, positive and negative electrode plates, an upper shield and a lower shield, wherein the positive and negative electrode plates are respectively positioned at the upper side and the lower side of the outer surface of the target object, are respectively positioned in the upper shield and the lower shield, and are respectively connected with the positive electrode and the negative electrode of the power supply;
the control unit 330 is further configured to send a control signal to the controller when it is determined that the target object is currently in a rainy state based on the collected video data, so that the controller controls the power supply to respectively supply power to the positive and negative electrode plates based on the control signal, so that the positive and negative electrode plates form an electric field outside the outer surface of the target object.
In a possible embodiment, the waterproof demisting system further comprises an upper water storage tank, a lower water storage tank and a neutralizing power generation device, the upper water storage tank is located below the upper protective cover, the lower water storage tank is located above the lower protective cover, and the neutralizing power generation device is connected with the upper water storage tank and the lower water storage tank through leads respectively.
Fig. 4 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure. The electronic device may include a processor 401, a communication interface 402, a memory 403, and a communication bus 404. The processor 401, communication interface 402 and memory 403 communicate with each other via a communication bus 404. Among them, the memory 403 stores a computer program; the processor 401 may execute the above-described defogging method by executing the program stored in the memory 403.
Embodiments of the present application further provide a non-transitory machine-readable storage medium, such as the memory 403 in fig. 4, storing a computer program, which is executable by the processor 401 in the electronic device shown in fig. 4 to implement the method for removing water mist described above.
Embodiments of the present application also provide a computer program, which is stored in a non-transitory machine-readable storage medium, such as the memory 403 in fig. 4, and when executed by a processor, causes the processor 401 to perform the method for removing water mist described above.
The embodiment of the present application further provides a waterproof defogging system, which includes: a video acquisition device and an electromagnetic wave transmitter; wherein:
a video capture device configured to capture video data;
and the video acquisition equipment is also configured to control the electromagnetic wave emitter to emit electromagnetic waves to the target object to remove the water mist on the surface of the target object when the target object is determined to need to be subjected to water mist removal treatment based on the acquired video data.
In one possible embodiment, the waterproof defogging system further comprises a controller, a power supply, positive and negative electrode plates, an upper shield and a lower shield, wherein the positive and negative electrode plates are respectively positioned at the upper side and the lower side of the outer surface of the target object, are respectively positioned in the upper shield and the lower shield, and are respectively connected with the positive electrode and the negative electrode of the power supply;
a video capture device further configured to send a control signal to the controller when it is determined that it is currently in a raining state based on the captured video data;
and a controller configured to control the power supply to supply power to the positive and negative electrode plates, respectively, based on the received control signal, so that the positive and negative electrode plates form an electric field outside the outer surface of the target object.
In a possible embodiment, the waterproof demisting system further comprises an upper water storage tank, a lower water storage tank and a neutralizing power generation device, the upper water storage tank is located below the upper protective cover, the lower water storage tank is located above the lower protective cover, and the neutralizing power generation device is connected with the upper water storage tank and the lower water storage tank through leads respectively.
In one possible embodiment, the structure of the video capture device may be as shown in FIG. 3.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (6)
1. A method of defogging a video capture device for use in a defogging system, the defogging system further comprising an electromagnetic wave emitter, the method comprising:
the video acquisition equipment acquires video data;
when the video acquisition equipment determines that a target object needs to be subjected to water mist removal treatment based on acquired video data, the electromagnetic wave emitter is controlled to emit electromagnetic waves to the target object, the frequency of the electromagnetic waves is controlled to reach the resonance frequency of water mist, and the water mist is vibrated through the electromagnetic waves, so that water drops attached to the outer surface of the target object and the water mist attached to the inner surface of the target object are separated from the surface of the target object, and the water mist on the surface of the target object is removed;
wherein, the video acquisition equipment determines that the target object needs to be subjected to defogging treatment based on the video data, and the method comprises the following steps:
the video acquisition equipment determines the fuzzy degree of the target object based on the acquired video data;
when the fuzzy degree of the target object is higher than a first preset threshold value, the video acquisition equipment determines that water mist removal treatment is required;
wherein the video capture device controls the electromagnetic wave transmitter to transmit electromagnetic waves to the target object, comprising:
the video acquisition equipment controls the electromagnetic wave transmitter to transmit electromagnetic waves to the target object, and adjusts the transmitting frequency of the electromagnetic wave transmitter based on the degradation value of the fuzzy degree of the target object in a preset unit time until the degradation value of the fuzzy degree of the target object in the preset unit time reaches a second preset threshold value when the electromagnetic wave transmitter transmits the electromagnetic waves based on the adjusted transmitting frequency;
when the fuzzy degree of the target object is lower than a third preset threshold value, the video acquisition equipment controls the electromagnetic wave emitter to stop emitting electromagnetic waves, and the third preset threshold value is smaller than the first preset threshold value.
2. The method of claim 1, wherein the video capture device controls the electromagnetic wave transmitter to transmit electromagnetic waves to the target object, comprising:
the video acquisition equipment controls the electromagnetic wave transmitter to respectively transmit electromagnetic waves to different areas of the target object;
for any region, the video acquisition equipment adjusts the transmission frequency of the electromagnetic wave transmitter based on the decrease value of the fuzzy degree of the region in preset unit time until the decrease value of the fuzzy degree of the region in preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits electromagnetic waves based on the adjusted transmission frequency.
3. The method according to claim 1 or 2, wherein the system further comprises a controller, a power supply, positive and negative electrode plates, an upper shield and a lower shield, wherein the positive and negative electrode plates are respectively disposed on the upper and lower sides of the outer surface of the target object, respectively disposed in the upper and lower shields, and respectively connected to the positive and negative electrodes of the power supply, and the outer surface of the target object is coated with a conductive coating connected to the positive or negative electrode of the power supply;
the method further comprises the following steps:
when the video acquisition equipment determines that the video acquisition equipment is in a raining state currently based on the acquired video data, a control signal is sent to the controller, so that the controller controls the power supply to respectively supply power to the positive and negative electrode plates based on the control signal, and the positive and negative electrode plates form an electric field on the outer side of the outer surface of the target object.
4. A video capture device, comprising:
an acquisition unit configured to acquire video data;
a determination unit configured to determine whether a target object needs to be subjected to defogging processing based on the video data acquired by the acquisition unit;
a control unit configured to control the electromagnetic wave emitter to emit electromagnetic waves to the target object, control the frequency of the electromagnetic waves to reach a resonance frequency of the water mist, and vibrate the water mist by the electromagnetic waves to enable water drops attached to the outer surface of the target object and mist attached to the inner surface of the target object to be separated from the surface of the target object so as to remove the water mist on the surface of the target object;
wherein the determining unit is specifically configured to determine a blur degree of the target object based on the acquired video data; when the fuzzy degree of the target object is higher than a first preset threshold value, determining that water mist removal treatment is required;
the control unit is specifically configured to control the electromagnetic wave transmitter to transmit the electromagnetic wave to the target object, and adjust the transmission frequency of the electromagnetic wave transmitter based on a decrease value of the degree of blur of the target object in a preset unit time until the decrease value of the degree of blur of the target object in the preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits the electromagnetic wave based on the adjusted transmission frequency; when the fuzzy degree of the target object is lower than a third preset threshold value, controlling the electromagnetic wave emitter to stop emitting the electromagnetic wave, wherein the third preset threshold value is smaller than the first preset threshold value.
5. A water and mist protection system, comprising: a video acquisition device and an electromagnetic wave transmitter; wherein:
the video acquisition device is configured to acquire video data;
the video acquisition equipment is further configured to control the electromagnetic wave emitter to emit electromagnetic waves to the target object and control the frequency of the electromagnetic waves to reach the resonance frequency of water mist when the target object needs to be subjected to water mist removal processing based on the acquired video data, and the water mist is vibrated through the electromagnetic waves, so that water drops attached to the outer surface of the target object and the water mist attached to the inner surface of the target object are separated from the surface of the target object to remove the water mist on the surface of the target object;
wherein the video capture device is specifically configured to determine a degree of blur of the target object based on the captured video data; when the fuzzy degree of the target object is higher than a first preset threshold value, determining that water mist removal treatment is required;
the video acquisition device is specifically configured to control the electromagnetic wave transmitter to transmit electromagnetic waves to the target object, and adjust the transmission frequency of the electromagnetic wave transmitter based on a decrease value of the blur degree of the target object in a preset unit time until the decrease value of the blur degree of the target object in the preset unit time reaches a second preset threshold when the electromagnetic wave transmitter transmits electromagnetic waves based on the adjusted transmission frequency; when the fuzzy degree of the target object is lower than a third preset threshold value, controlling the electromagnetic wave emitter to stop emitting the electromagnetic waves, wherein the third preset threshold value is smaller than the first preset threshold value.
6. The system of claim 5, further comprising a controller, a power source, positive and negative electrode plates, and upper and lower shields, wherein the positive and negative electrode plates are respectively disposed on upper and lower sides of an outer surface of the target object, respectively disposed in the upper and lower shields, and respectively connected to positive and negative electrodes of the power source, and the outer surface of the target object is coated with a conductive coating, and the conductive coating is connected to the positive or negative electrode of the power source;
the video capture device further configured to send a control signal to the controller when it is determined based on the captured video data that it is currently in a raining state;
the controller is configured to control the power supply to respectively supply power to the positive and negative electrode plates based on the control signal, so that the positive and negative electrode plates form an electric field outside the outer surface of the target object.
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| JPH0647366B2 (en) * | 1986-04-09 | 1994-06-22 | 日産自動車株式会社 | Water drop removal device |
| JPH0295945A (en) * | 1988-09-30 | 1990-04-06 | Aisin Seiki Co Ltd | Water drop removing device |
| JP4283417B2 (en) * | 2000-04-07 | 2009-06-24 | 東芝変電機器テクノロジー株式会社 | Fog elimination method |
| WO2008057499A2 (en) * | 2006-11-07 | 2008-05-15 | Walter Charles Hernandez | A surface to move a fluid via fringe electric fields |
| US20190118776A1 (en) * | 2017-10-19 | 2019-04-25 | Ford Global Technologies, Llc | Vehicle window cleaning |
| CN110406346B (en) * | 2018-04-26 | 2022-05-06 | 上海博泰悦臻网络技术服务有限公司 | Air conditioner control method and system based on image acquisition and vehicle |
| CN111862002A (en) * | 2020-06-29 | 2020-10-30 | 维沃移动通信有限公司 | Screen water mist removing method and device, electronic equipment and readable storage medium |
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