CN114714865A - Demisting system and demisting method for automobile glass - Google Patents
Demisting system and demisting method for automobile glass Download PDFInfo
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- CN114714865A CN114714865A CN202210383531.8A CN202210383531A CN114714865A CN 114714865 A CN114714865 A CN 114714865A CN 202210383531 A CN202210383531 A CN 202210383531A CN 114714865 A CN114714865 A CN 114714865A
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- 239000011521 glass Substances 0.000 title claims abstract description 280
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 44
- 239000003595 mist Substances 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/002—Windows; Windscreens; Accessories therefor with means for clear vision, e.g. anti-frost or defog panes, rain shields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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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
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
- B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
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Abstract
The application relates to a defogging system and a defogging method for automobile glass, wherein the defogging system comprises: the storage module stores a plurality of standard images under each temperature difference; the first acquisition module acquires a real-time image; the second acquisition module is used for acquiring a first real-time temperature inside; the third acquisition module acquires a second external real-time temperature; the control module is used for acquiring the standard image and judging whether the definition value of the real-time image is within the definition value range of the standard image; the demisting module is used for demisting the automobile glass; and if the definition value of the real-time image is out of the definition value range of the standard image, sending a control signal to the defogging module. The standard image of the automobile glass is determined in real time, so that the range of the definition value of the standard image of the automobile glass under different temperature differences is dynamic, and the problem that the accuracy of judging the starting and closing of the demisting operation through acquiring the real-time image of the automobile glass in the prior art is low is effectively solved.
Description
Technical Field
The application relates to the technical field of automobiles, in particular to a defogging system and a defogging method for automobile glass.
Background
As shown in fig. 1, in order to satisfy the requirement of the camera function on the automobile, a camera device, such as a multifunctional camera 950, is usually fixed on the front windshield of the automobile, and can be used to record the driving information during driving, so as to maintain the legal interest of the driver during driving.
As shown in fig. 2, during the use process, the front windshield of the automobile is likely to generate water mist to affect the normal use of the camera 950, and in a severe case, the camera 950 may be damaged due to a short circuit even caused by the short circuit. Therefore, in the prior art, the real-time image information of the automobile glass 900 can be acquired through the camera 950, whether water mist is generated on the automobile glass 900 is judged based on the real-time image information, and the automobile glass 900 is demisted through the demisting module 600 when being fogged, so that the normal use of the camera 950 is prevented from being affected.
However, the generation of the fog has a great relationship with the temperature and humidity of the environment around the glass, and it is generally impossible to accurately and appropriately determine whether the automobile glass needs to be demisted and when the demisting is stopped by only acquiring the real-time image information of the automobile glass. That is, the accuracy of determining the start and stop of the defogging operation by acquiring the real-time image of the glass of the vehicle is to be improved.
Disclosure of Invention
Based on the above, a defogging system and a defogging method for automobile glass are provided to solve the problem that the accuracy of judging the starting and closing of a defogging operation is low by acquiring a real-time image of the automobile glass in the prior art.
In one aspect, a defogging system for a glass of an automobile is provided, comprising:
a storage module configured to: storing a plurality of standard images of the inside and the outside of the automobile under each temperature difference, and sending the standard images of the automobile glass under the temperature difference according to the temperature difference, wherein the standard images are obtained under the condition of simulating the demisted state of the automobile glass;
a first acquisition module configured to: acquiring a real-time image of the automobile glass;
a second acquisition module configured to: collecting a first real-time temperature of an interior of the automobile;
a third acquisition module configured to: collecting a second real-time temperature of an exterior of the automobile;
a control module configured to: receiving the image sent by the first acquisition module, receiving the temperatures respectively sent by the second acquisition module and the third acquisition module, acquiring a standard image of the automobile glass under the temperature difference according to the first real-time temperature and the second real-time temperature, and judging whether the definition value of the real-time image of the automobile glass is within the definition value range of the standard image of the automobile glass under the temperature difference;
and a defogging module configured to: receiving a control signal sent by the control module, and demisting the automobile glass;
if the control module judges that the definition value of the real-time image of the automobile glass is located outside the definition value range of the standard image of the automobile glass under the temperature difference, the control module sends a control signal to the defogging module.
In one embodiment, the defogging system further comprises:
a fourth acquisition module configured to: collecting the real-time humidity of the inner side of the automobile glass;
the control module is further configured to: presetting a humidity threshold value, receiving the humidity sent by the fourth acquisition module, and judging whether the real-time humidity of the inner side of the automobile glass exceeds the humidity threshold value or not;
and if the control module judges that the real-time humidity of the inner side of the automobile glass exceeds a humidity threshold value, sending a control signal to the defogging module.
In one embodiment, the defogging system further comprises:
a fifth acquisition module configured to: collecting the real-time illuminance of the automobile glass;
the storage module is configured to: storing each temperature difference between the inside and the outside of the automobile and a plurality of standard images under each illuminance, and sending the standard images of the automobile glass under the temperature difference and the illuminance according to the temperature difference and the illuminance;
the control module is configured to: receiving the image sent by the first acquisition module, receiving the temperatures respectively sent by the second acquisition module and the third acquisition module, receiving the illuminance sent by the fifth acquisition module, acquiring the standard image of the automobile glass under the temperature difference and the real-time illuminance according to the first real-time temperature, the second real-time temperature and the real-time illuminance, and judging whether the definition value of the real-time image of the automobile glass is within the range of the definition value of the real-time image of the automobile glass under the temperature difference and the real-time illuminance;
if the control module judges that the definition value of the real-time image of the automobile glass is located outside the range of the definition values of the standard images of the automobile glass under the temperature difference and the real-time illuminance, the control module sends a control signal to the defogging module.
In one embodiment, the defogging module comprises a resistance wire, and the resistance wire is arranged on the inner side of the automobile glass and used for heating the automobile glass.
In one embodiment, a camera is arranged on the inner side of the automobile glass, and the storage module, the first acquisition module and the control module are modules integrally arranged on the camera.
In another aspect, a defogging method for an automobile glass is provided, which includes:
storing a plurality of standard images of the interior and the exterior of the automobile under each temperature difference, wherein the standard images are obtained under the condition of simulating the demisted state of the automobile glass;
acquiring a real-time image of the automobile glass;
acquiring a first real-time temperature inside the automobile, acquiring a second real-time temperature outside the automobile, and acquiring a standard image of the automobile glass under the temperature difference according to the first real-time temperature and the second real-time temperature;
judging whether the definition value of the real-time image of the automobile glass is within the definition value range of the standard image of the automobile glass under the temperature difference;
and if the definition value of the real-time image of the automobile glass is judged to be out of the definition value range of the standard image of the automobile glass under the temperature difference, demisting the automobile glass.
In one embodiment, the defogging method further comprises:
the defogging method further comprises the following steps:
presetting a humidity threshold value;
collecting the real-time humidity of the inner side of the automobile glass;
judging whether the real-time humidity of the inner side of the automobile glass exceeds a humidity threshold value or not;
and if the real-time humidity of the inner side of the automobile glass exceeds the humidity threshold value, demisting the automobile glass.
In one embodiment, the step of storing the plurality of standard images at the respective temperature differences of the interior and exterior of the vehicle comprises:
storing each temperature difference between the inside and the outside of the automobile and a plurality of standard images under each illuminance;
the method comprises the steps of collecting a first real-time temperature inside the automobile, collecting a second real-time temperature outside the automobile, and acquiring a standard image of the automobile glass under the temperature difference according to the first real-time temperature and the second real-time temperature, wherein the step comprises the following steps:
collecting a first real-time temperature of an interior of the automobile;
collecting a second real-time temperature of an exterior of the automobile;
collecting the real-time illuminance of the automobile glass;
acquiring a standard image of the automobile glass under the temperature difference and the real-time illuminance according to the first real-time temperature, the second real-time temperature and the real-time illuminance;
the step of judging whether the definition value of the real-time image of the automobile glass is within the definition value range of the standard image of the automobile glass under the temperature difference comprises the following steps:
and judging whether the definition value of the real-time image of the automobile glass is within the range of the definition value of the standard image of the automobile glass under the temperature difference and the real-time illuminance.
The standard image of the automobile glass under the temperature difference is determined in real time by determining the temperature difference between the inside and the outside of the automobile in real time, so that the range of the definition value of the standard image of the automobile glass under the different temperature differences between the inside and the outside of the automobile is dynamic, namely when the temperature difference between the inside and the outside of the automobile is small, the qualified standard of the standard image of the automobile glass can be set to be higher, and the requirement of the definition when the camera acquires the image is met; when the temperature difference between the inside and the outside of the automobile is large, the qualified standard of the standard image of the automobile glass can be properly reduced, so that the phenomena of energy waste and reduction of the use durability of the automobile glass caused by continuous work of the defogging module are avoided, and the problem that the accuracy of judging the startup and the shutdown of the defogging operation by acquiring the real-time image of the automobile glass in the prior art is low is effectively solved.
Drawings
FIG. 1 is a schematic diagram of an image collected by a camera when the automobile glass has no water mist;
FIG. 2 is a schematic diagram of an image collected by a camera when water mist is generated on the automobile glass;
FIG. 3 is a schematic diagram of an image collected by a camera after defogging of automobile glass when the temperature difference between the inside and the outside of an automobile is large;
FIG. 4 is a schematic structural diagram of a defogging system according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a defogging system disposed on a glass of an automobile according to an embodiment of the present application;
FIG. 6 is a flow chart of a defogging method according to an embodiment of the present application;
FIG. 7 is a flowchart illustrating a defogging method according to another embodiment of the present application;
FIG. 8 is a flow chart of a defogging method according to another embodiment of the present application;
fig. 9 is a flowchart of a defogging method according to another embodiment of the present application.
Description of the drawings: 100. a storage module; 200. a first acquisition module; 300. a second acquisition module; 400. a third acquisition module; 500. a control module; 600. a demisting module; 700. a fourth acquisition module; 800. a fifth acquisition module; 900. automotive glass; 910. an inner sheet of glass; 920. an outer sheet of glass; 930. a PVB film; 940. coating; 950. a camera is provided.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that the illustrations provided in the present embodiments are only schematic illustrations of the basic idea of the present invention.
The drawings in the present specification illustrate only the structures, proportions, and dimensions of the invention, and are therefore not to be considered limiting, for the understanding and appreciation of those skilled in the art, but are not intended to limit the scope of the invention.
References in this specification to orientations or positional relationships such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," "circumferential," and the like are based on the orientations or positional relationships illustrated in the drawings and are intended to simplify the description, rather than to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The water mist is formed by the water vapor in the hot air being liquefied to form water drops and collected on the glass of the automobile when the hot air is cooled. Water vapor condensation is a mass transfer process, i.e., a process in which water vapor molecules are transferred between a gas phase and a liquid phase; mass transfer requires a driving force that is the difference between the equilibrium partial pressure of water vapor (i.e., the saturated vapor pressure of water) and the actual vapor pressure at the water surface (i.e., the partial pressure of water vapor in air). That is, as long as the partial pressure of water vapor in the air is greater than the saturated vapor pressure of water, the water vapor will condense.
Although the vapor in the air of the automobile is basically kept unchanged when no external circulation air conditioning measure is taken, the saturated vapor pressure of the water is in a single function relationship with the temperature, and the saturated vapor pressure of the water is reduced when the temperature is reduced, so that when the temperature outside the automobile is lower, the saturated vapor pressure of the water is far lower than the partial pressure of the vapor in the air, and the phenomenon of continuous condensation of the vapor can occur.
The inventor found that when there is a temperature difference between the inside and outside of the automobile, the rate of condensation of water vapor in the air is different between the temperature differences, and the phenomenon is further shown that the state of the condensation-forming water droplets is different.
As shown in fig. 3, when the temperature difference between the inside and the outside of the automobile glass 900 is small, the water vapor condensation speed is slow, after defogging measures are taken, water mist is not easily generated on the automobile glass 900 immediately, and the camera 950 can not be affected by the water mist for a long time when image acquisition is performed through the automobile glass 900; however, when the temperature difference between the inside and the outside of the automobile glass 900 is large, the water vapor is condensed at a high speed, water mist is easily generated on the automobile glass 900 continuously, even if a defogging measure is taken, fine water drops still adhere to the automobile glass 900, and the situation of no water mist is difficult to achieve, however, the thickness of the water drops is thin, the gap generated between the water drops and the water drops is small and is not easy to be perceived by human eyes, even under certain conditions, a layer of water film with uniform and extremely thin thickness can be formed on the automobile glass 900, although the defogging system can recognize that the definition of the image under the condition is still different from that of the image under the condition of no water mist, the normal use of the camera 950 is not affected, and a driver can drive the automobile. If the defogging module continues to work at this moment, not only cause the waste of the energy, can cause even the defogging module no matter how much the defogging, real-time image can not satisfy the standard of the image when having no water smoke, easily cause the car glass to be in by the heating state for a long time simultaneously and reduce its durability in utilization.
That is, the present application provides a defogging system for an automotive glass based on the finding that defogging measures for an automotive glass 900 are different in different temperatures between the interior and the exterior of an automobile.
As shown in fig. 4, an embodiment of the present application provides a defogging system for a vehicle window, which may include a storage module 100, which may be configured to: storing a plurality of standard images of the inside and the outside of the automobile under each temperature difference, and sending the standard images of the automobile glass 900 under the temperature difference according to the temperature difference, wherein the standard images are obtained under the state of simulating the demisting of the automobile glass 900; a first acquisition module 200, which may be configured to: acquiring a real-time image of the automotive glass 900; a second acquisition module 300, which may be configured to: collecting a first real-time temperature of an interior of an automobile; a third acquisition module 400, which may be configured to: collecting a second real-time temperature of the exterior of the automobile; a control module 500, which may be configured to: receiving the image sent by the first acquisition module 200, receiving the temperatures respectively sent by the second acquisition module 300 and the third acquisition module 400, acquiring a standard image of the automobile glass 900 under the temperature difference according to the first real-time temperature and the second real-time temperature, and judging whether the definition value of the real-time image of the automobile glass 900 is within the definition value range of the standard image under the temperature difference; and a defogging module 600, which may be configured to: and receiving the control signal sent by the control module 500, and demisting the automobile glass 900.
If the control module 500 determines that the definition value of the real-time image of the automobile glass 900 is outside the definition value range of the standard image thereof under the temperature difference, the control module may send a control signal to the defogging module 600.
In the present embodiment, it is exemplarily illustrated that the state after the defogging measures are taken at the temperature difference between the inside and the outside of the automobile can be simulated by means of simulation, then the standard images of the automobile glass 900 at the temperature difference can be collected by means of image capturing, and all the images are stored in the storage module 100, so as to complete the configuration of the storage module 100. More specifically, the respective temperature differences may be linearly distributed, the gradient value thereof may be set to 0.5 degrees celsius, and the temperature differences may be negative, zero, and positive.
Likewise, the first capture module 200 may be configured to capture real-time images of the automotive glass 900 using image capture.
The second and third collection modules 300 and 400 may each employ a temperature sensor, which may be respectively disposed at the inner side and the outer side of the automobile glass 900 and spaced apart from the automobile glass 900, so that they respectively collect a first real-time temperature of the inside of the automobile and a second real-time temperature of the outside of the automobile.
The control module 500 determines whether the sharpness value of the real-time image of the automobile glass 900 is within the range of the sharpness value of the standard image of the automobile glass 900 under the temperature difference, specifically, the control module 500 may first pre-process the standard image of the automobile glass 900 under the temperature difference to obtain the range of the sharpness value of the standard image, for example, C1-C2Wherein, C1The lower limit value of the definition of the image acquired by the camera 950 after the defogging measures are taken for the automobile glass 900 under the temperature difference; c2After the defogging measures are taken for the automobile glass 900 under the temperature difference, the upper limit value of the definition of the image collected by the camera 950 can be obtained. It will be appreciated that the greater the temperature difference between the inside and outside of the automotive glass 900, C1Is correspondingly smaller, but C2Can be kept constant, i.e. C2The value of (2) can be always equal to the sharpness value of the image collected by the camera 950 when the automobile glass 900 has no water mist. Similarly, the control module 500 pre-processes the real-time image of the glass 900 to obtain a sharpness value, such as C, of the real-time image3. The control module 500 then determines C3Whether or not it is located at C1-C2In, if C3Less than C1It is to be noted that, in the current state, the automobile glass 900 cannot meet the normal use requirement of the camera 950, and needs to be defogged or needs to be continued; if C3Greater than C1And is less than C2It is to be noted that, in the current state, the automobile glass 900 may meet the normal use requirement of the camera 950, and does not need to be defogged or need not to be continued. It will be appreciated that due to C2An upper limit value, C, for the sharpness of the image acquired by the camera 9503C or more does not appear2The case (1).
Specifically, the overall process of defogging for the defogging system may be: the first collection module 200 collects a real-time image of the automobile glass 900, the second collection module 300 and the third collection module 400 collect a first real-time temperature inside the automobile and a second real-time temperature outside the automobile respectively, the first collection module 200 sends the collected image, the second collection module 300 and the third collection module 400 send the collected temperatures to the control module 500, the control module 500 solves the temperature difference according to the first real-time temperature and the second real-time temperature, and sends the temperature difference to the storage module 100, the storage module 100 retrieves the standard image of the automobile glass 900 under the temperature difference according to the temperature difference, and sends it back to the control module 500, after the control module 500 preprocesses the real-time image of the automobile glass 900 and the standard image thereof at the temperature difference, then, whether the definition value of the real-time image of the automobile glass 900 is within the definition value range of the standard image of the automobile glass under the temperature difference is judged.
If no water mist is generated on the automobile glass 900 or the generated water mist is less and does not affect the normal use of the camera, the control module 500 can judge that the definition value of the real-time image of the automobile glass 900 is within the definition value range of the standard image of the real-time image under the temperature difference, and at the moment, a defogging measure is not needed.
If the water mist generated on the automobile glass 900 affects the normal use of the camera, the control module 500 can judge that the definition value of the real-time image of the automobile glass 900 is outside the definition value range of the standard image of the real-time image of the automobile glass under the temperature difference, at the moment, the control module 500 sends a control signal to the defogging module 600, and the defogging module 600 defogges the automobile glass 900. After the defogging module 600 works for a period of time, the first collecting module 200 collects the real-time image of the automobile glass 900 again, and repeats the above process until the control module 500 judges that the definition value of the real-time image of the automobile glass 900 is within the range of the definition value of the standard image of the real-time image of the automobile glass 900 under the temperature difference, which proves that the defogging effect of the defogging module 600 on the automobile glass 900 reaches the standard of the normal use of the camera 950, and at this moment, the defogging module 600 stops defogging.
The standard image of the automobile glass 900 under the temperature difference is determined in real time by determining the temperature difference between the inside and the outside of the automobile in real time, so that the range of the definition value of the standard image of the automobile glass 900 under the different temperature differences between the inside and the outside of the automobile is dynamic, namely when the temperature difference between the inside and the outside of the automobile is small, the qualified standard of the standard image of the automobile glass 900 can be set to be higher, and the requirement of the definition when the camera 950 collects the image is met; when the temperature difference between the inside and the outside of the automobile is large, the qualified standard of the standard image of the automobile glass 900 can be properly reduced, so that the phenomena of energy waste and reduction of the use durability of the automobile glass 900 caused by continuous work of the defogging module 600 are avoided, and the problem that the accuracy of judging the starting and the closing of the defogging operation by acquiring the real-time image of the automobile glass in the prior art is low is effectively solved.
As shown in fig. 4, the defogging system may further include a fourth acquisition module 700, which may be configured to: collecting the real-time humidity of the inside of the automotive glass 900; the control module 500 may be further configured to: and presetting a humidity threshold, receiving the humidity sent by the fourth acquisition module 700, and judging whether the real-time humidity on the inner side of the automobile glass 900 exceeds the humidity threshold.
If the control module 500 determines that the real-time humidity inside the automobile glass 900 exceeds the humidity threshold, it sends a control signal to the defogging module 600.
In this embodiment, it is exemplarily illustrated that the fourth collection module 700 may employ a humidity sensor, which may be disposed on the inner side of the automobile glass 900, and when disposed, it may be fixed on a bracket, which is fixed on the inner side of the automobile glass 900, so as to accurately collect real-time humidity on the inner side of the automobile glass 900. After the fourth collection module 700 collects the real-time humidity, the real-time humidity is sent to the control module 500, the control module 500 compares the real-time humidity, if the real-time humidity exceeds a humidity threshold value, a control signal is sent to the defogging module 600, and the defogging module 600 heats the automobile glass 900 after receiving the control signal so as to remove the water mist on the automobile glass 900.
It can be understood that the first collection module 200 and the fourth collection module 700 may work independently, and specifically, when the automobile glass 900 generates water mist, the control module 500 may determine whether to send the control signal to the defogging module 600 by comparing whether the real-time image of the automobile glass 900 is the same as the standard image thereof, or whether the real-time humidity of the inner side of the automobile glass 900 exceeds the humidity threshold.
For example, in summer, if the interior of the automobile is cooled, the temperature of the interior of the automobile is lower than the temperature of the exterior, and water mist may appear on the outer side of the automobile glass 900, at this time, the real-time humidity of the inner side of the automobile glass 900 collected by the fourth collection module 700 is smaller than the humidity threshold, and the control module 500 cannot determine whether to send the control signal to the defogging module 600 by comparing whether the real-time humidity of the inner side of the automobile glass 900 exceeds the humidity threshold, but may determine by comparing whether the real-time image of the automobile glass 900 is the same as the standard image thereof.
For another example, when the water mist on the inner side of the automobile glass 900 is distributed uniformly, the difference between the definition of the real-time image of the automobile glass 900 and the definition of the standard image thereof is small, and the control module 500 may not accurately determine whether to send the control signal to the defogging module 600 by comparing whether the real-time image of the automobile glass 900 is the same as the standard image thereof, but the control module 500 may determine whether to compare whether the real-time humidity on the inner side of the automobile glass 900 exceeds the humidity threshold.
As shown in fig. 4, the defogging system may further include a fifth acquisition module 800, which may be configured to: collecting real-time illuminance of the automobile glass 900; the storage module 100 may be configured to: storing a plurality of standard images of the automobile glass 900 under each temperature difference and each illuminance inside and outside the automobile, and sending the standard images of the automobile glass 900 under the temperature difference and the illuminance according to the temperature difference information and the illuminance information; the control module 500 may be configured to: the image sent by the first acquisition module 200 is received, the temperatures respectively sent by the second acquisition module 300 and the third acquisition module 400 are received, the illuminance sent by the fifth acquisition module 800 is received, the standard image of the automobile glass 900 under the temperature difference and the real-time illuminance is obtained according to the first real-time temperature, the second real-time temperature and the real-time illuminance, and whether the definition value of the real-time image of the automobile glass 900 is within the range of the definition value of the standard image under the temperature difference and the real-time illuminance is judged.
If the control module 500 determines that the sharpness value of the real-time image of the vehicle is outside the range of the sharpness value of the standard image of the vehicle under the temperature difference and the real-time illuminance, the control module sends a control signal to the defogging module 600.
In the present embodiment, it is exemplarily illustrated that the simulation means simulates the state of the car glass 900 after taking defogging measures at the inside and outside temperature differences and the illumination intensities of the car, and then the image capturing means captures the standard images of the car glass 900 at the temperature differences and the illumination intensities, and stores all the images in the storage module 100. Of course, the illuminance can also be linearly distributed, and the gradient value can be specifically set according to the actual requirement.
The fifth collection module 800 may employ a illuminance sensor, which may be disposed at an outer side of the automobile glass 900, so as to collect real-time illuminance outside the automobile.
The first collection module 200 collects images, the second collection module 300 and the third collection module 400 collect temperatures respectively, the fifth collection module 800 collects illuminance and then sends the illuminance to the control module 500, the control module 500 calculates temperature difference according to the temperature and sends the temperature difference and the illuminance to the storage module 100, the storage module 100 transfers the standard image of the automobile glass 900 under the real-time temperature difference and the real-time illuminance according to the received temperature difference and illuminance and sends the standard image to the control module 500, and the control module 500 judges whether the definition value of the real-time image of the automobile glass 900 is within the range of the definition value of the standard image under the temperature difference and the real-time illuminance.
As shown in fig. 5, the defogging module 600 may include a resistance wire, which may be disposed inside the vehicle glass 900. In the embodiment, it is exemplarily illustrated that the resistance wire may be attached to the inner side of the automobile glass 900, and may receive a current signal sent by the control module 500 to generate heat and heat the automobile glass 900. Defogging module 600 sets up in automobile glass 900's inboard, can be so that automobile glass 900's the process of being heated from inside to outside, and then make automobile glass 900 thermally equivalent more easily to the inboard condition of hazing of automobile glass 900 is often more, and it can also satisfy the inboard demand of getting rid of water smoke of automobile glass 900 more.
As shown in fig. 5, in order to prevent the defogging module 600 from being exposed to the outside, a coating 940 may be disposed on the glass 900 of the automobile, and the coating 940 may be formed of a printed ink. Specifically, the automotive glass 900 may include an inner sheet of glass 910, an outer sheet of glass 920, and a PVB film 930 disposed between the inner sheet of glass 910 and the outer sheet of glass 920, the printing ink may be disposed on a side of the inner sheet of glass 910 remote from the outer sheet of glass 920, the defogging module 600 may be sintered on the inner sheet of glass 910 and coated with a coating 940 for shading, and a side of the outer sheet of glass 920 proximate to the inner sheet of glass 910 may also be coated with a coating 940 to prevent the defogging module 600 from being viewed from outside the vehicle.
As shown in fig. 4 and 5, the storage module 100, the first acquisition module 200 and the control module 500 may be modules integrally disposed on the camera 950. In the present embodiment, it is exemplarily illustrated that the storage module 100, the first collecting module 200 and the control module 500 may be formed by modules on the camera 950, that is, the standard image of the automobile glass 900 may be stored in the camera 950, and the defogging system may collect the real-time image of the automobile glass 900 through the camera 950, and simultaneously may compare the real-time image and the standard image of the automobile glass 900 through the camera 950. Above-mentioned mode of setting up can carry out rational utilization to current device to it is required to satisfy defogging system's function, and then avoids increasing the increase of the cost that extra equipment brought, and can also simplify defogging system's structure.
As shown in fig. 6, the present application also discloses a defogging method for an automobile glass, which may include:
s1, storing a plurality of standard images of the inside and the outside of the automobile under various temperature differences, wherein the standard images are obtained under the state of the simulated automobile glass 900 after defogging;
s2, acquiring a real-time image of the automobile glass 900;
s3, acquiring a first real-time temperature inside the automobile, acquiring a second real-time temperature outside the automobile, and acquiring a standard image of the automobile glass 900 under the temperature difference according to the first real-time temperature and the second real-time temperature;
and S4, judging whether the definition value of the real-time image of the automobile glass 900 is within the definition value range of the standard image of the automobile glass at the temperature difference.
If the definition value of the real-time image of the automobile glass 900 is judged to be out of the definition value range of the standard image of the real-time image of the automobile glass under the temperature difference, demisting is carried out on the automobile glass 900.
In the present embodiment, it is exemplarily illustrated that, in the above-described defogging system, the storage module 100 may store a plurality of standard images of the automobile glass 900 at various temperature differences inside and outside the automobile; the first acquisition module 200 can acquire real-time images of the automobile glass 900; the second collection module 300 can collect the first real-time temperature inside the automobile, the second collection module 300 can collect the second real-time temperature outside the automobile, the control module 500 can receive the image sent by the first collection module 200, the temperature sent by the second collection module 300 and the third collection module 400 can be received, the temperature difference is calculated according to the temperature, the standard image of the automobile glass 900 under the temperature difference between the first real-time temperature and the second real-time temperature is obtained according to the temperature difference, and then whether the definition value of the real-time image of the automobile glass 900 is within the definition value range of the standard image of the automobile glass under the temperature difference can be judged.
If the control module 500 determines that the definition value of the real-time image of the automobile glass 900 is out of the definition value range of the standard image of the real-time image of the automobile glass under the temperature difference, a control signal is sent to the defogging module 600 to heat the automobile glass 900, so that the water mist on the automobile glass 900 is removed; if the real-time image of the automobile glass 900 obtained by comparison of the control module 500 is the same as the standard image, no control signal is sent.
As shown in fig. 7, after the step S4 is completed, if it is determined that the sharpness value of the real-time image of the automobile glass 900 is within the range of the sharpness value of the standard image thereof under the temperature difference, the defogging method may further include:
s5, presetting a humidity threshold;
s6, collecting the real-time humidity of the inner side of the automobile glass 900;
s7, judging whether the real-time humidity of the inner side of the automobile glass 900 exceeds a humidity threshold value;
if the real-time humidity of the inner side of the automobile glass 900 exceeds the humidity threshold value, demisting the automobile glass 900.
In this embodiment, for example, in the defogging system described above, the control module 500 may preset a humidity threshold, the fourth acquisition module 700 may acquire the real-time humidity of the inner side of the automobile glass 900, and the control module 500 may further receive the humidity sent by the fourth acquisition module 700 and determine whether the real-time humidity of the inner side of the automobile glass 900 exceeds the humidity threshold, and if the control module 500 compares that the real-time humidity of the inner side of the automobile glass 900 exceeds the humidity threshold, send a control signal to the defogging module 600 to heat the automobile glass 900; if the real-time humidity of the control module 500 compared with the inner side of the automobile glass 900 does not exceed the threshold value equal to the humidity, no control signal is sent.
In other words, the defogging system may first perform steps S5-S7, and then perform steps S1-S4 if the real-time humidity on the inner side of the automobile glass 900 does not exceed the humidity threshold.
As shown in fig. 8, of course, in some embodiments, the defogging system may also perform the steps S1-S4 and S5-S7 at the same time, and heat the automobile glass 900 when one or both of the conditions "determine that the sharpness value of the real-time image of the automobile glass 900 is outside the range of the sharpness value of the standard image thereof at the temperature difference" or "determine that the real-time humidity inside the automobile glass 900 exceeds the threshold value of humidity" are met.
As shown in fig. 9, the step of storing several standard images of the automobile glass 900 at various temperature differences of the inside and the outside of the automobile (i.e., step S1) may include:
storing a plurality of standard images of the automobile glass 900 at each temperature difference between the inside and the outside of the automobile and each illuminance;
the step of acquiring a first real-time temperature of the inside of the automobile, acquiring a second real-time temperature of the outside of the automobile, and acquiring a standard image of the automobile glass 900 at a temperature difference between the first real-time temperature and the second real-time temperature (i.e., step S3) may include:
s301, collecting a first real-time temperature in the automobile;
s302, collecting a second real-time temperature outside the automobile;
s303, collecting the real-time illuminance of the automobile glass 900;
s304, acquiring a standard image of the automobile glass 900 under the temperature difference and the real-time illuminance according to the first real-time temperature, the second real-time temperature and the real-time illuminance;
the step of determining whether the sharpness value of the real-time image of the automobile glass 900 is within the range of the sharpness value of the standard image thereof at the temperature difference (i.e., step S4) may include:
it is determined whether the sharpness value of the real-time image of the automobile glass 900 is within the range of its sharpness value of the standard image under the temperature difference and the real-time illuminance.
In this embodiment, as an example, in the above defogging system, the storage module 100 may store a plurality of standard images of the automobile glass 900 at different temperature differences between the inside and the outside of the automobile and different illumination levels, the second acquisition module 300 may acquire a first real-time temperature of the inside of the automobile, the third acquisition module 400 may acquire a second real-time temperature of the outside of the automobile, the fifth acquisition module 800 may acquire a real-time illumination level of the automobile glass 900, the control module 500 may receive the temperatures sent by the second acquisition module 300 and the third acquisition module 400, receive the illumination level sent by the fifth module, then, the temperature difference is calculated according to the temperature information, and the standard image of the automobile glass 900 under the temperature difference and the real-time illuminance is obtained in real time according to the temperature difference and the illuminance, and determines whether the sharpness value of the real-time image of the automobile glass 900 is within the range of its sharpness value of the standard image under the temperature difference and the real-time illuminance.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A defogging system for an automotive glazing, said defogging system comprising:
a storage module (100) configured to: storing a plurality of standard images of the inner side and the outer side of the automobile glass (900) under each temperature difference, and sending the standard images of the automobile glass (900) under the temperature difference according to the temperature difference, wherein the standard images are obtained under the condition of simulating the demisting state of the automobile glass (900);
a first acquisition module (200) configured to: -acquiring a real-time image of the automotive glass (900);
a second acquisition module (300) configured to: collecting a first real-time temperature of an inner side of the automotive glass (900);
a third acquisition module (400) configured to: collecting a second real-time temperature of the outside of the automotive glass (900);
a control module (500) configured to: receiving the image sent by the first acquisition module (200), receiving the temperatures respectively sent by the second acquisition module (300) and the third acquisition module (400), acquiring a standard image of the automobile glass (900) under the temperature difference according to the first real-time temperature and the second real-time temperature, and judging whether the definition value of the real-time image of the automobile glass (900) is within the definition value range of the standard image under the temperature difference;
and a defogging module (600) configured to: receiving a control signal sent by the control module (500), and demisting the automobile glass (900);
if the control module (500) judges that the definition value of the real-time image of the automobile glass (900) is out of the definition value range of the standard image of the automobile glass under the temperature difference, the control module sends a control signal to the defogging module (600).
2. The defogging system for an automotive glazing as recited in claim 1 further comprising:
a fourth acquisition module (700) configured to: acquiring real-time humidity of the inner side of the automobile glass (900);
the control module (500) is further configured to: presetting a humidity threshold, receiving the humidity sent by the fourth acquisition module (700), and judging whether the real-time humidity on the inner side of the automobile glass (900) exceeds the humidity threshold;
if the control module (500) judges that the real-time humidity on the inner side of the automobile glass (900) exceeds the humidity threshold value, a control signal is sent to the defogging module (600).
3. The defogging system for an automotive glass as claimed in claim 1 or 2, wherein said defogging system further comprises:
a fifth acquisition module (800) configured to: acquiring real-time illuminance of the automobile glass (900);
the storage module (100) is configured to: storing each temperature difference between the inner side and the outer side of the automobile glass (900) and a plurality of standard images under each illuminance, and sending the standard images of the automobile glass (900) under the temperature difference and the illuminance according to the temperature difference and the illuminance;
the control module (500) is configured to: receiving the image sent by the first acquisition module (200), receiving the temperatures respectively sent by the second acquisition module (300) and the third acquisition module (400), receiving the illuminance sent by the fifth acquisition module (800), acquiring the standard image of the automobile glass (900) under the temperature difference and the real-time illuminance according to the first real-time temperature, the second real-time temperature and the real-time illuminance, and judging whether the definition value of the real-time image of the automobile glass (900) is within the range of the definition value of the real-time image of the automobile glass under the temperature difference and the real-time illuminance;
if the control module (500) judges that the definition value of the real-time image of the automobile glass (900) is out of the range of the definition value of the standard image of the automobile glass under the temperature difference and the real-time illuminance, the control module sends a control signal to the defogging module (600).
4. The defogging system for an automotive glass as recited in claim 1,
the defogging module (600) comprises a resistance wire, and the resistance wire is arranged on the inner side of the automobile glass (900) and used for heating the automobile glass (900).
5. The defogging system for automobile glass according to claim 1,
the inner side of the automobile glass (900) is provided with a camera (950), and the storage module (100), the first acquisition module (200) and the control module (500) are modules which are integrally arranged on the camera (950).
6. A method of defogging an automobile glass, said method comprising:
storing a plurality of standard images at respective temperature differences of the inside and the outside of the automotive glass (900), the standard images being obtained under a state simulating a demisted state of the automotive glass (900);
-acquiring a real-time image of the automotive glass (900);
acquiring a first real-time temperature of the inner side of the automobile glass (900), acquiring a second real-time temperature of the outer side of the automobile glass (900), and acquiring a standard image of the automobile glass (900) under the temperature difference according to the first real-time temperature and the second real-time temperature;
judging whether the definition value of the real-time image of the automobile glass (900) is within the definition value range of the standard image of the automobile glass under the temperature difference;
and if the definition value of the real-time image of the automobile glass (900) is judged to be out of the definition value range of the standard image of the automobile glass under the temperature difference, demisting the automobile glass (900).
7. The method for defogging an automobile glass as recited in claim 6,
the defogging method further comprises the following steps:
presetting a humidity threshold value;
acquiring real-time humidity of the inner side of the automobile glass (900);
judging whether the real-time humidity of the inner side of the automobile glass (900) exceeds a humidity threshold value or not;
and if the control module (500) judges that the real-time humidity of the inner side of the automobile glass (900) exceeds the humidity threshold value, demisting the automobile glass (900).
8. The defogging method for automobile glass as recited in claim 6 or 7,
the step of storing a plurality of standard images of the inside and outside of the automotive glass (900) at respective temperature differences comprises:
storing each temperature difference between the inner side and the outer side of the automobile glass (900) and a plurality of standard images under each illuminance;
the method comprises the steps of collecting a first real-time temperature of the inner side of the automobile glass (900), collecting a second real-time temperature of the outer side of the automobile glass (900), and acquiring a standard image of the automobile glass (900) under the temperature difference according to the first real-time temperature and the second real-time temperature, wherein the standard image comprises the following steps:
collecting a first real-time temperature of an inner side of the automotive glass (900);
collecting a second real-time temperature of the outside of the automotive glass (900);
acquiring real-time illuminance of the automobile glass (900);
acquiring a standard image of the automobile glass (900) under the temperature difference and the real-time illuminance according to the first real-time temperature, the second real-time temperature and the real-time illuminance;
the step of judging whether the definition value of the real-time image of the automobile glass (900) is within the definition value range of the standard image of the automobile glass under the temperature difference comprises the following steps:
and judging whether the definition value of the real-time image of the automobile glass (900) is within the range of the definition value of the standard image of the automobile glass under the temperature difference and the real-time illuminance.
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