1. The utility model provides a side window anti-fog system, its characterized in that, side window anti-fog system includes electrical heating film (1), first temperature sensor (2), second temperature sensor (3), humidity transducer (4), controller (5), battery (6) and control switch (7), wherein:

the electric heating film (1) is rectangular, a plurality of electric heating wires (11) are uniformly arranged on the electric heating film (1), the length difference between every two electric heating wires (11) is smaller than a first preset difference value, the electric heating film (1) is arranged in a glass interlayer of double-layer glass of a side window (8), a first temperature sensor (2) is fixedly connected to the side window (8), and a second temperature sensor (3) and a humidity sensor (4) are arranged in a vehicle;

the control ends of the first temperature sensor (2), the second temperature sensor (3), the humidity sensor (4) and the control switch (7) are respectively electrically connected with the controller (5), the first connection ends of the first temperature sensor (2), the second temperature sensor (3), the humidity sensor (4) and the control switch (7) are respectively electrically connected with the battery (6), and the second connection end of the control switch (7) is electrically connected with the plurality of electric heating wires (11);

the temperature control system comprises a first temperature sensor (2), a second temperature sensor (3), a humidity sensor (4) and a controller (5), wherein the first temperature sensor is used for detecting the window temperature of a side window (8) and transmitting the window temperature to the controller (5), the second temperature sensor is used for detecting the temperature in the vehicle and transmitting the temperature in the vehicle to the controller (5), and the humidity sensor is used for detecting the humidity in the vehicle and transmitting the humidity in the vehicle to the controller (5);

the controller (5) is used for obtaining the window temperature, the in-vehicle temperature and the in-vehicle humidity, determining the dew point temperature according to the in-vehicle temperature and the in-vehicle humidity, controlling the control switch (7) to be closed when the window temperature is smaller than or equal to the dew point temperature, and controlling the control switch (7) to be opened when the window temperature is larger than the dew point temperature and the difference value between the window temperature and the dew point temperature is larger than or equal to a second preset difference value.

2. The side window antifogging system according to claim 1, wherein a plurality of electric heating wires (11) on the electric heating film (1) are connected in parallel to both ends of the battery (6), respectively.

3. The side window antifogging system according to claim 1, characterized in that the plurality of electric heating wires (11) provided on the electric heating film (1) are all equal in length.

4. The side window anti-fog system of claim 1, wherein the first temperature sensor (2) is a thermistor, the thermistor being in contact with the side window (8).

5. The side window anti-fog system of claim 1, wherein the second temperature sensor (3) and the humidity sensor (4) are provided on an interior rear view mirror.

6. The side window anti-fog system of claim 1, wherein the first predetermined difference is 1 cm.

7. The side window anti-fog system of claim 1, wherein the second predetermined difference is 5 ℃.

8. A vehicle characterized in that it comprises a side window anti-fog system according to claims 1-7.

9. Vehicle according to claim 8, characterized in that the number of electrically heated films (1) provided on each side window (8) is 1;

electric heating film (1) includes first electric heating film and second electric heating film, the position department that first exterior mirror that first electric heating film set up on side door window (8) that the primary driver corresponds, the position department that second exterior mirror that second electric heating film set up on side door window (8) that the copilot corresponds, wherein, first exterior mirror is the exterior mirror of primary driver one side, second exterior mirror is the exterior mirror of copilot one side.

10. Vehicle according to claim 8, characterized in that a plurality of electrically heated films (1) are respectively arranged uniformly on each side window (8).

Background

In spring, autumn, rainy days, winter and the like, the inner surface of the window of the vehicle is very easy to fog, the sight of a driver is influenced, and the vehicle is easy to run dangerously.

At present, the front windshield department of vehicle is provided with the mouth of blowing, when the front windshield hazed, can open air conditioner adjustment wind direction, makes it blow towards front windshield, plays antifog effect.

However, because the air blowing port which blows directly to the side window cannot be arranged in the vehicle, the effect of the air conditioner air blowing on preventing the side window from fogging is low, and the fog on the side window of the vehicle cannot be scattered, so that great potential safety hazards can be caused during driving.

Disclosure of Invention

The embodiment of the application provides an antifog system of side door window can solve the technical problem that exists among the correlation technique, the technical scheme of antifog system of side door window as follows:

on the one hand, the embodiment of the present application provides a side window anti-fog system, side window anti-fog system includes electrical heating film 1, first temperature sensor 2, second temperature sensor 3, humidity transducer 4, controller 5, battery 6 and control switch 7, wherein:

the electric heating film 1 is rectangular, a plurality of electric heating wires 11 are uniformly arranged on the electric heating film 1, the length difference between every two electric heating wires 11 is smaller than a first preset difference value, the electric heating film 1 is arranged in a glass interlayer of double-layer glass of a side window 8, a first temperature sensor 2 is fixedly connected to the side window 8, and a second temperature sensor 3 and a humidity sensor 4 are arranged in a vehicle;

the control ends of the first temperature sensor 2, the second temperature sensor 3, the humidity sensor 4 and the control switch 7 are respectively electrically connected with the controller 5, the first connection ends of the first temperature sensor 2, the second temperature sensor 3, the humidity sensor 4 and the control switch 7 are respectively electrically connected with the battery 6, and the second connection end of the control switch 7 is electrically connected with the plurality of electric heating wires 11;

the temperature control system comprises a first temperature sensor 2, a second temperature sensor 3, a humidity sensor 4 and a controller 5, wherein the first temperature sensor is used for detecting the window temperature of a side window 8 and transmitting the window temperature to the controller 5, the second temperature sensor is used for detecting the temperature in the automobile and transmitting the temperature in the automobile to the controller 5, and the humidity sensor 4 is used for detecting the humidity in the automobile and transmitting the humidity in the automobile to the controller 5;

the controller 5 is used for obtaining the window temperature, the in-vehicle temperature and the in-vehicle humidity, determining the dew point temperature according to the in-vehicle temperature and the in-vehicle humidity, controlling the control switch 7 to be closed when the window temperature is smaller than or equal to the dew point temperature, and controlling the control switch 7 to be opened when the window temperature is larger than the dew point temperature and the difference between the window temperature and the dew point temperature is larger than or equal to a second preset difference.

In one possible implementation, a plurality of electric heating wires 11 on the electric heating film 1 are respectively connected in parallel at both ends of the battery 6.

In one possible implementation, the lengths of the plurality of electric heating wires 11 disposed on the electric heating film 1 are all equal.

In one possible implementation, the first temperature sensor 2 is a thermistor, which is in contact with the side window 8.

In one possible implementation, the second temperature sensor 3 and the humidity sensor 4 are arranged on the interior rear view mirror.

In a possible implementation, the first preset difference is 1 cm.

In one possible implementation, the second preset difference is 5 ℃.

In another aspect, embodiments of the present application provide a vehicle including a side window anti-fog system as in any one of the above.

In a possible implementation, the number of electrically heated films 1 provided on each side window 8 is 1;

the electric heating film 1 comprises a first electric heating film and a second electric heating film, the first electric heating film is arranged at the position corresponding to the first exterior rear view mirror on the side window 8 corresponding to the main driving, the second electric heating film is arranged at the position corresponding to the second exterior rear view mirror on the side window 8 corresponding to the assistant driving, wherein the first exterior rear view mirror is the exterior rear view mirror on one side of the main driving, and the second exterior rear view mirror is the exterior rear view mirror on one side of the assistant driving.

In one possible embodiment, a plurality of electrically heated films 1 are respectively arranged uniformly on each side window 8.

The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:

the embodiment of the application provides an antifog system of side door window, set up the electrical heating membrane in the double glazing's of side door window glass intermediate layer, evenly be provided with a plurality of electric heating wire on the electrical heating membrane, first temperature sensor fixed connection is on the side door window, second temperature sensor and humidity transducer set up in the car, first temperature sensor is used for detecting the door window temperature, second temperature sensor is used for detecting the interior temperature of car, humidity transducer is used for detecting the interior humidity of car, the controller is used for confirming dew point temperature according to the interior temperature of car and the interior humidity of car, compare dew point temperature and door window temperature, whether heat according to the big or small relation control electric heating wire between dew point temperature and the door window temperature, thereby play antifog effect to the side door window.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an anti-fog system for a side window according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a side window anti-fog system according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an electrically heated film shown in an embodiment of the present application;

FIG. 4 is a schematic view of an electrically heated film shown in an embodiment of the present application;

fig. 5 is a schematic view of an electrical heating film according to an embodiment of the present application.

Description of the figures

1. Electrically heating the film; 11. an electric heating wire;

2. a first temperature sensor;

3. a second temperature sensor;

4. a humidity sensor;

5. a controller;

6. a battery;

7. a control switch;

8. side window.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application provides a side window anti-fog system, as shown in fig. 1, the side window anti-fog system comprises an electric heating film 1, a first temperature sensor 2, a second temperature sensor 3, a humidity sensor 4, a controller 5, a battery 6 and a control switch 7.

The electric heating film 1 is rectangular, a plurality of electric heating wires 11 are uniformly arranged on the electric heating film 1, the length difference between every two electric heating wires 11 is smaller than a first preset difference value, and the electric heating film 1 is arranged in a glass interlayer of double-layer glass of the side window 8, as shown in fig. 2.

In implementation, a plurality of electric heating wires 11 are uniformly arranged on the electric heating film 1, the electric heating wires 11 may be heating resistors, the plurality of electric heating wires 11 arranged on the electric heating film 1 are all connected in parallel at two ends of the battery 6, in the case that voltages at two ends are equal, the heat generated by each electric heating wire 11 is related to the length of the whole electric heating wire 11, and the heat generated by the electric heating wire 11 with the shorter length is larger. In the embodiment of the present application, the length difference between the plurality of electric heating wires 11 disposed on the electric heating film 1 is smaller than a first preset difference value, so that the difference value between the heat generated by each electric heating wire 11 can be controlled within a certain range, and the glass of the position of the electric heating film 1 on the side window 8 can be uniformly heated as much as possible.

Optionally, a specific value of the first preset difference may be set according to a specific situation, and may be any reasonable value, for example, 1cm, or 0.5cm, and the like, which is not limited in this embodiment of the application.

Optionally, the lengths of the plurality of electric heating wires 11 disposed on the electric heating film 1 may also be equal, so that the electric heating film 1 has a better effect of uniformly heating the side window 8.

The electric heating film 1 may be rectangular, and the arrangement of the plurality of electric heating wires 11 on the electric heating film 1 may be multiple, and the following are some of them:

the first method is that each electric heating wire 11 is integrally linear and uniformly arranged along the length direction or the width direction of the electric heating film 1, as shown in fig. 3 and 4, the distance between every two adjacent electric heating wires 11 on the electric heating film 1 is equal, so that the electric heating film 1 can uniformly heat the side window 8.

A second method may be that a plurality of electric heating wires 11 are arranged alternately as shown in fig. 5, and the distance between each electric heating wire 11 and its adjacent electric heating wire 11 is equal.

It is to be understood that the number of the electric heating wires 11 disposed on the electric heating film 1 in fig. 3, 4 and 5 is only an illustration, and the number of the electric heating wires 11 disposed on the electric heating film 1 may be set according to specific situations, which is not limited in the embodiments of the present application.

The first temperature sensor 2 is fixedly connected to the side window 8, and the second temperature sensor 3 and the humidity sensor 4 are disposed in the vehicle interior.

In an embodiment, the first temperature sensor 2 may be fixed to a surface of the side window 8, for example, may be fixed to an inner surface of the side window 8, and since the first temperature sensor detects the temperature of the side window 8 and the temperature of the side window 8 heated by the electric heating wire 11, the first temperature sensor 8 may be disposed as close as possible to the first temperature sensor 2, as shown in fig. 2.

Alternatively, the first temperature sensor 2 and the second temperature sensor 3 may be both thermistors, and when the first temperature sensor 2 is a thermistor, the thermistor may be disposed in contact with the surface of the side window 8 so as to detect the window temperature thereof.

Also, for the sake of the aesthetic appearance of the vehicle as a whole, the first temperature sensor 2 may be provided at a position of the side window 8 within the vehicle side door sheet metal when the side window 8 is completely raised, that is, at a position where the lower portion of the side window 8 is hidden in the side door sheet metal when the side window 8 is completely raised. In this way, even if the side window 8 is completely raised, the occupant does not see the first temperature sensor 2 provided on the side window 8. Of course, in order to detect the temperature of the side window 8 heated by the electric heating wire 11 more accurately, the first temperature sensor 2 may be disposed as close as possible to the electric heating film 1 in the hidden position.

The second temperature sensor 3 may be provided at any position in the vehicle for periodically detecting the temperature in the vehicle. The humidity sensor 4 may also be provided at any position in the vehicle for periodically detecting the humidity in the vehicle. Then, the current dew point temperature can be calculated according to the detected temperature and humidity in the vehicle, wherein the dew point temperature refers to the temperature when the air is cooled to saturation under the condition that the water vapor content and the air pressure are not changed, namely the temperature when the water vapor in the air is condensed into water drops.

Alternatively, the dew point temperature may be calculated by using an approximate calculation method, and in the embodiment of the present application, the formula for calculating the dew point temperature according to the in-vehicle temperature and the in-vehicle humidity may be:

T_d＝U(0.198+0.007t)+0.84t-19.2K

wherein, T_dThe temperature is the dew point temperature in the vehicle, U is the humidity in the vehicle, t is the temperature in the vehicle, and K is the calibration coefficient.

An initial value of K may be set in advance, and for example, the initial value of K may be set to 1. After the initial value of K is determined, K can be adjusted according to the use condition of the side window anti-fog system.

After the side window antifogging system is used, the side window 8 provided with the electric heating film 1 is fogged, and the electric heating wire 11 on the electric heating film 1 is not heated, so that the calculated dew point temperature according to the initial value of K is inaccurate and is lower than the actual dew point temperature, and at the moment, the value of K can be reduced. The value of K can be adjusted by a preset unit value, for example, the initial value of K is 1, the preset unit value is set to 0.1, when the value of K needs to be adjusted, the value of K can be first adjusted to 0.1, namely, to 0.9, then the anti-fog effect of the side window anti-fog system at the moment is tested, if the value of K needs to be adjusted to be reduced, the value of K is continuously adjusted to 0.1, namely, to 0.8, then the anti-fog effect of the side window anti-fog system is continuously tested, and so on, the value of K is adjusted until the anti-fog effect of the side window anti-fog system is better.

When the electric heating wire 11 on the side window 8 provided with the electric heating film 1 on the vehicle starts heating and the side window 8 not provided with the electric heating film 1 is not fogged, it means that the dew point temperature calculated according to the initial value of K is greater than the actual dew point temperature, and at this time, the value of K can be increased. Similarly, the value of K may be adjusted by a preset unit value, for example, the initial value of K is 1, the preset unit value is set to 0.1, when the value of K needs to be increased, the value of K may be first increased by 0.1, that is, adjusted to 1.1, then the antifogging effect of the side window antifogging system at this time is tested, if the value of K needs to be increased, the value of K continues to be increased by 0.1, that is, adjusted to 1.2, then the antifogging effect of the side window antifogging system continues to be tested, and so on, the value of K is adjusted until the antifogging effect of the side window antifogging system is better.

After the current dew point temperature in the vehicle is calculated, whether the electric heating wire 11 needs to be controlled to heat or not can be judged according to the magnitude relation between the dew point temperature and the window temperature so as to prevent the side window 8 from fogging. The second temperature sensor 3 and the humidity sensor 4 may be disposed at adjacent positions in the vehicle to more accurately calculate the dew point temperature from the detected temperature and humidity in the vehicle.

Optionally, the second temperature sensor 3 and the humidity sensor 4 may be disposed at a higher position in the vehicle, and correspondingly, the second temperature sensor 3 and the humidity sensor 4 may be disposed on the interior mirror so as to detect the temperature and the humidity in the vehicle.

As for the electrical connection relationship among the electric heating film 1, the first temperature sensor 2, the second temperature sensor 3, the humidity sensor 4, the controller 5, the battery 6, and the control switch 7, the following arrangement may be made:

the control ends of the first temperature sensor 2, the second temperature sensor 3, the humidity sensor 4 and the control switch 7 are respectively electrically connected with the controller 5, the first connection ends of the first temperature sensor 2, the second temperature sensor 3, the humidity sensor 4 and the control switch 7 are respectively electrically connected with the battery 6, and the second connection end of the control switch 7 is electrically connected with the electric heating film 1.

The first temperature sensor 2 is used for detecting the window temperature of a side window and transmitting the window temperature to the controller 5, the second temperature sensor 3 is used for detecting the temperature in the automobile and transmitting the temperature in the automobile to the controller 5, and the humidity sensor 4 is used for detecting the humidity in the automobile and transmitting the humidity in the automobile to the controller 5.

In implementation, the first connection end of the control switch 7 is electrically connected to the battery 6, the second connection end of the control switch 7 is electrically connected to the plurality of electric heating wires 11 disposed on the electric heating film 1, and the control end of the control switch 7 is electrically connected to the controller 5, and the controller 5 can control the opening or closing of the control switch 7 according to the magnitude relationship between the calculated dew point temperature in the vehicle and the detected window temperature, so as to control the battery 6 to supply or cut off power to the electric heating wires 11, thereby heating or stopping heating the electric heating wires 11.

The controller 5 is used for obtaining the temperature of the window, the temperature in the vehicle and the humidity in the vehicle, determining the dew point temperature according to the temperature in the vehicle and the humidity in the vehicle, controlling the control switch 7 to be closed when the temperature of the window is less than or equal to the dew point temperature, and controlling the control switch 7 to be opened when the temperature of the window is greater than the dew point temperature and the difference between the temperature of the window and the dew point temperature is greater than or equal to a second preset difference.

In implementation, the controller 5 may obtain the window temperature sent by the first temperature sensor 2, the in-vehicle temperature sent by the second temperature sensor 3, and the in-vehicle humidity sent by the humidity sensor 4, and then calculate the current dew point temperature in the vehicle according to the obtained in-vehicle temperature and the obtained in-vehicle humidity.

Then, the calculated dew point temperature may be compared with the acquired window temperature, and when the window temperature is greater than the dew point temperature, it indicates that the window temperature on the side window 8 still cannot condense water vapor in the vehicle into water droplets, and at this time, the control switch 7 may be controlled to be in an off state, and the electric heating wire 11 is not heated.

When the window temperature is less than or equal to the dew point temperature, it is shown that the window temperature on the side window 8 at this time can completely condense water vapor in the vehicle into water drops, so as to form mist on the side window 8, therefore, when the window temperature is less than the dew point temperature, the controller 5 can control the control switch 7 to be closed, the battery 6 starts to supply power to the plurality of electric heating wires 11 on the electric heating film 1, so that the electric heating wires 11 heat the side window 8, so that the window temperature rises to be greater than the dew point temperature, and the function of preventing the side window 8 from fogging is achieved.

Considering that the heated temperature of the side window 8 cannot be increased without limitation, a technician may preset a second preset difference value, and when the control switch 7 is in the closed state, the window temperature of the side window 8 acquired by the controller 5 is greater than the dew point temperature, and the difference value between the window temperature and the dew point temperature is greater than or equal to the second preset difference value, it is indicated that the window temperature has risen to a temperature sufficient to perform an anti-fog function on the side window 8, at this time, the controller 5 may control the control switch 7 to be turned off, the battery 6 stops supplying power to the electric heating wire 11, and the electric heating wire 11 stops heating.

If the ambient temperature around the side window 8 is still low, the window temperature of the side window 8 gradually decreases after the electric heater wire 11 stops heating. When the window temperature of the side window 8 (i.e. the temperature detected by the first temperature sensor 2) drops to be less than or equal to the currently calculated dew point temperature, the controller 5 controls the control switch 7 to be closed, and the electric heating wire 11 heats the side window 8 again, so that the side window 8 is prevented from being fogged.

Optionally, a specific value of the second preset difference may be set according to a specific situation, and may be any reasonable value, for example, 5 ℃, and the like, which is not limited in this embodiment of the application.

The application also provides a vehicle, which comprises the side window anti-fog system.

Alternatively, the number of the electric heating films 1 provided on each side window 8 is 1, and the electric heating films 1 are provided at the middle-lower position of the side of each side window 8 close to the exterior rear view mirror.

Each side window 8 of the vehicle may be provided with the electric heating film 1, or only one or more side windows 8 may be provided with the electric heating film 1. For example, the electric heating film 1 may be provided only on the side window 8 corresponding to the main driving and the sub driving to perform an antifogging action on the side window 8 corresponding to the main driving and the sub driving so that the driver can clearly view the exterior mirror through the two side windows 8.

Optionally, in the case that a plurality of side windows 8 of the vehicle are provided with the electric heating films 1, one first temperature sensor 2 may be provided on each side window 8 provided with the electric heating film 1, and the window temperature of each side window 8 provided with the electric heating film 1 is the temperature detected by the first temperature sensor 2 corresponding to the side window 8.

In the case where a plurality of side windows 8 are provided with the electric heating films 1 on the vehicle, it is also possible to provide only one first temperature sensor 2, and to provide only one of the side windows 8 with the first temperature sensor 2, and the window temperature of each of the side windows 8 provided with the electric heating films 1 is the temperature detected by the first temperature sensor 2. The number of the first temperature sensors 2 in the vehicle may be set to any one of the above-mentioned numbers, or may be set to other reasonable numbers, which is not limited in the embodiment of the present application.

Correspondingly, when the electric heating film 1 is provided on a plurality of side windows 8 of the vehicle, the number and positions of the second temperature sensors 3 and the humidity sensors 4 may be determined according to the number and positions of the side windows 8 on which the electric heating film 1 is provided.

When the electric heating film 1 is arranged on a plurality of side windows 8 on the vehicle, only one second temperature sensor 3 and one humidity sensor 4 can be arranged in the vehicle, and the positions in the vehicle, which are close to the plurality of side windows 8 on which the electric heating film 1 is arranged, can be arranged. For example, when the electric heating film 1 is provided on two side windows 8 on the vehicle, one second temperature sensor 3 and one humidity sensor 4 may be provided at a position between the two side windows 8, and if the two side windows 8 are the side windows 8 corresponding to the main driving and the sub driving, the second temperature sensor 3 and the humidity sensor 4 may be provided therebetween, for example, may be provided on an interior mirror or the like.

Of course, in the case where the electric heating film 1 is provided on a plurality of side windows 8 of the vehicle, a plurality of second temperature sensors 3 and a corresponding plurality of humidity sensors 4 may be provided in the vehicle, each of which is provided at a position close to the side window 8 on which the electric heating film 1 is mounted on average.

One second temperature sensor 3 and one humidity sensor 4 may be provided for each side window 8 on which the electric heating film 1 is mounted, one second temperature sensor 3 and one humidity sensor 4 may also be provided for each preset number of side windows 8, or both the second temperature sensor 3 and the humidity sensor 4 provided for one side window 8 and the first temperature sensor 3 and the humidity sensor 4 provided for the preset number of side windows 8 may be provided on one vehicle, the second temperature sensor 3 and the humidity sensor 4 provided for the preset number of side windows 8 may be provided at positions close to the preset number of side windows 8, and may be provided at positions between the preset number of side windows 8. The specific numerical value of the preset number may be any reasonable numerical value, for example, 2, and of course, other numerical values may also be used, which is not limited in the embodiment of the present application.

For the case that a plurality of second temperature sensors 3 and a plurality of corresponding humidity sensors 4 are arranged in the vehicle, the corresponding heating methods may be various, two of which may be as follows:

the first may be: the controller 5 obtains the in-vehicle temperature sent by each second temperature sensor 3 and the in-vehicle humidity sent by the corresponding humidity sensor 4, and calculates a dew point temperature according to each in-vehicle temperature and the corresponding in-vehicle humidity, so as to obtain the dew point temperatures corresponding to the plurality of second temperature sensors 3 and the humidity sensors 4.

Each side window 8 provided with an electrically heated film 1 corresponds to one second temperature sensor 3 and humidity sensor 4 (of course, one second temperature sensor 3 and corresponding humidity sensor 4 may correspond to one or more side windows 8), i.e. each side window 8 provided with an electrically heated film 1 corresponds to one dew point temperature.

And comparing the dew point temperature corresponding to each side window 8 provided with the electric heating film 1 with the corresponding window temperature, if the window temperature is less than or equal to the dew point temperature, controlling the control switch 7 to be closed, starting to supply power to the plurality of electric heating wires 11 on the electric heating film 1 by the battery 6, heating the side window 8 by the electric heating wires 11, if the window temperature is greater than the dew point temperature, controlling the control switch 7 to be in an off state, and if the control switch 7 is in the closed state, the window temperature is greater than the dew point temperature, and the difference between the window temperature and the dew point temperature is greater than or equal to a second preset difference, controlling the control switch 7 to be off, and stopping heating the electric heating wires 11.

The second may be: the controller 5 obtains the in-vehicle temperature sent by each second temperature sensor 3 and the in-vehicle humidity sent by the corresponding humidity sensor 4, and calculates a dew point temperature according to each in-vehicle temperature and the corresponding in-vehicle humidity, so as to obtain the dew point temperatures corresponding to the plurality of second temperature sensors 3 and the humidity sensors 4. The minimum of these dew point temperatures is then obtained as the target dew point temperature. The window temperature corresponding to each side window 8 provided with the electric heating film 1 is compared with the target dew point temperature. When the corresponding window temperature is less than or equal to the target dew point temperature, the corresponding control switch 7 is controlled to be closed, and the electric heating wire 11 arranged on the side window 8 corresponding to the window temperature is heated. And when the corresponding window temperature is higher than the target dew point temperature, controlling the corresponding control switch 7 to keep an off state, and if the control switch 7 is in an on state, the corresponding window temperature is higher than the target dew point temperature, and the difference value between the window temperature and the target dew point temperature is higher than or equal to a second preset difference value, controlling the control switch 7 to be off, and stopping heating the electric heating wire 11 arranged on the side window 8 corresponding to the window temperature.

The heating method may be any of the above methods, or may be other appropriate settings, and the present embodiment is not limited to this.

On the vehicle, the number of the electric heating films 1 provided on each side window 8 may be 1, as shown in fig. 2. The electric heating film 1 may be provided at a specific position of the side window 8, and alternatively, the setting of the positions of the electric heating films provided on the side window 8 corresponding to the main driving and the side window 8 corresponding to the sub-driving may be as follows:

the electric heating film 1 comprises a first electric heating film and a second electric heating film, the first electric heating film is arranged at a position corresponding to a first exterior mirror on a side window 8 corresponding to a main driver, the second electric heating film is arranged at a position corresponding to a second exterior mirror on the side window 8 corresponding to a copilot, wherein the first exterior mirror is the exterior mirror on one side of the main driver, and the second exterior mirror is the exterior mirror on one side of the copilot.

In an implementation, the first electric heating film disposed on the side window 8 corresponding to the main driving may be disposed at a position corresponding to the first exterior rear view mirror, so that the driver who drives the vehicle can clearly see the first exterior rear view mirror through the position where the first electric heating film is disposed, so that the driver can observe the traffic condition through the first exterior rear view mirror. Similarly, the second electric heating film arranged on the side window 8 corresponding to the copilot can be arranged at the position corresponding to the second exterior mirror, so that the driver of the primary driver can clearly see the second exterior mirror through the position where the second electric heating film is arranged, and the traffic flow condition can be clearly observed. The position setting of above-mentioned first electrical heating membrane and second electrical heating membrane can play the effect of anti-fogging to this position to make the driver can be through the traffic stream condition that outside rear-view mirror appears of seeing that side window 8 is clear, improved the security of driving.

Optionally, a plurality of electric heating films 1 can be uniformly arranged on each side window 8, so that the area of the anti-fogging part on each side window 8 is enlarged, and people in the vehicle can observe the conditions outside the vehicle more clearly.

The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:

the embodiment of the application provides an antifog system of side door window, set up electrical heating film 1 in the double glazing's of side door window 8 glass intermediate layer, evenly be provided with a plurality of electric heating wire 11 on electrical heating film 1, 2 fixed connection of first temperature sensor are on side door window 8, second temperature sensor 3 and humidity transducer 4 set up in the car, first temperature sensor 2 is used for detecting the door window temperature, second temperature sensor 3 is used for detecting the interior temperature of car, humidity transducer 4 is used for detecting the interior humidity of car, controller 5 is used for confirming dew point temperature according to the interior temperature of car and the interior humidity of car, compare dew point temperature and door window temperature, whether big or not control electric heating wire 11 heats according to the big or small relation between dew point temperature and the door window temperature, thereby the side door window 8 plays antifog effect.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.