CN111301121A - Method and device for controlling heat transmission of vehicle window - Google Patents

Method and device for controlling heat transmission of vehicle window Download PDF

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Publication number
CN111301121A
CN111301121A CN201811512176.XA CN201811512176A CN111301121A CN 111301121 A CN111301121 A CN 111301121A CN 201811512176 A CN201811512176 A CN 201811512176A CN 111301121 A CN111301121 A CN 111301121A
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reflective film
vehicle
temperature
control signal
illumination intensity
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CN201811512176.XA
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CN111301121B (en
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高群
孙益民
李建如
龚晓庆
吴晓彪
陆晓清
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/02Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in position
    • B60J3/0286Sunglare reduction by temporary translucent screens or foils removably attached to window
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric 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
    • B60R16/02Electric 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
    • B60R16/023Electric 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The application discloses a method for controlling heat transmission of a vehicle window, which is applied to an Electronic Control Unit (ECU), wherein the ECU detects a working mode selected by a user, receives environmental data detected by an environment monitoring device under the condition that the working mode selected by the user is an automatic mode, and determines and outputs a reflective film control signal according to the received environmental data, so that a reflective film for isolating heat transmission between the interior and the exterior of a vehicle can perform corresponding action according to the reflective film control signal, thereby controlling the heat transmitted through the vehicle window. The method for controlling the heat transmission of the vehicle window can control the movement of the reflecting film according to the environmental data, so that the heat transmitted through the vehicle window is reasonably controlled, the rapid rise of the temperature in the vehicle due to sun exposure is prevented, and the rapid loss of the heat of the vehicle due to the excessively low temperature outside the vehicle is prevented.

Description

Method and device for controlling heat transmission of vehicle window
Technical Field
The application relates to the technical field of automotive electronics, in particular to a method and a device for controlling heat transmission of a vehicle window.
Background
Along with the improvement of living standard of people, the popularization rate of automobiles is higher and higher, and the requirement of people on the comfort level of automobiles is also higher and higher. In order to ensure the air circulation in the vehicle, the vehicle is usually provided with windows, and in order to further improve the air circulation degree in the vehicle, show better scenery and improve the lighting effect, most vehicles are also provided with skylights. At present, the size of the window shows a gradually increasing trend, and even a panoramic sunroof is adopted on a part Sports Utility Vehicle (SUV) and a mid class car.
However, the consequence of gradually increasing the size of the vehicle window is that under the sun exposure, the temperature in the vehicle will rise sharply, thereby greatly affecting the ride experience for the user.
In order to solve the problem, a few luxurious automobiles adopt coated glass or heat absorption laminated glass as window glass, however, in cold winter, the heat of sunlight cannot enter the automobiles, the temperature in the automobiles cannot be raised by the heat of the sunlight, and for some solar electric automobiles, the endurance mileage of the electric automobiles can be seriously influenced by insufficient sunlight.
Disclosure of Invention
In order to solve the technical problem, the application provides a method for controlling heat transmission of a vehicle window, which can control the heat transmission of the vehicle window according to current environmental data.
The embodiment of the application discloses the following technical scheme:
in a first aspect, an embodiment of the present application provides a method for controlling heat transmission of a vehicle window, which is applied to an electronic control unit ECU, and the method includes:
detecting a working mode selected by a user;
receiving environmental data detected by an environmental monitoring device under the condition that the working mode selected by the user is an automatic mode;
outputting a reflective film control signal according to the environment data so that the reflective film executes corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
Optionally, the environment monitoring device includes a temperature sensor, an illumination sensor, a vehicle window position sensor and an air conditioner opening state monitoring device;
correspondingly, the environment data comprises the temperature outside the vehicle, the temperature inside the vehicle, the illumination intensity, the position of the vehicle window and the opening state of the air conditioner.
Optionally, the method further includes:
detecting whether the vehicle is in a starting state or a flameout state.
Optionally, when the vehicle is in a starting state, the receiving environmental data detected by the environment monitoring device includes:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the vehicle window position detected by the vehicle window position sensor, and receiving the air conditioner opening state detected by the air conditioner opening state detection device;
the outputting a reflective film control signal according to the environment data to make the reflective film execute corresponding actions according to the reflective film control signal includes:
judging whether the temperature outside the vehicle is greater than a first temperature threshold value;
if the temperature outside the vehicle is greater than the first temperature threshold, judging whether the temperature outside the vehicle is greater than a second temperature threshold which is greater than the first temperature threshold, and if the temperature outside the vehicle is greater than the second temperature threshold, outputting a first reflective film control signal which can enable the reflective film to be opened to the position of the vehicle window; if the temperature outside the vehicle is smaller than the second temperature threshold, judging whether the illumination intensity is larger than a first illumination intensity threshold, if so, outputting a second reflective film control signal, and if so, enabling the reflective film to be opened to a first designated position; if the illumination intensity is smaller than the first illumination intensity threshold value, judging whether the air conditioner starting state is a heating state, and if the air conditioner starting state is the heating state, outputting a third reflective film control signal which can enable the reflective film to be opened to the car window position; if the starting state of the air conditioner is a non-heating state, calculating the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle, and if the temperature difference is higher than a first temperature difference threshold value, outputting a fourth reflective film control signal which can enable the reflective film to be opened to a second appointed position; if the temperature difference is lower than the first temperature difference threshold value, outputting a fifth reflective film control signal, wherein the fifth reflective film control signal can enable the reflective film to be retracted;
if the temperature outside the vehicle is smaller than the first temperature threshold, judging whether the starting state of the air conditioner is a heating state, if so, outputting a sixth reflective film control signal, wherein the sixth reflective film control signal can enable the reflective film to be opened to the position of the vehicle window; if the starting state of the air conditioner is a non-heating state, judging whether the illumination intensity is greater than a second illumination intensity threshold value, if so, outputting a seventh reflective film control signal, wherein the seventh reflective film control signal can enable the reflective film to be folded; if the illumination intensity is less than the second illumination intensity threshold, no signal is output.
Optionally, the first designated position is calculated according to the illumination intensity and the temperature outside the vehicle;
and the second appointed position is obtained by calculation according to the illumination intensity, the temperature outside the vehicle and the temperature inside the vehicle.
Optionally, the environment monitoring device further includes a battery level sensor;
accordingly, the environmental data further includes battery charge.
Optionally, when the vehicle is in a flameout state, the receiving environmental data detected by the environmental monitoring device includes:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the position of the vehicle window detected by the vehicle window position sensor, receiving the opening state of the air conditioner detected by the air conditioner opening state detection device, and receiving the electric quantity of the storage battery detected by the storage battery electric quantity sensor;
the outputting a reflective film control signal according to the environment data to make the reflective film execute corresponding actions according to the reflective film control signal includes:
judging whether the electric quantity of the storage battery is larger than a first electric quantity threshold value;
if the electric quantity of the storage battery is smaller than the first electric quantity threshold value, no signal is output, and the storage battery enters a dormant state;
if the electric quantity of the storage battery is larger than the first electric quantity threshold value, judging whether the illumination intensity is larger than a third illumination intensity threshold value, if so, outputting an eighth reflective film control signal, wherein the eighth reflective film control signal can control the reflective film to be completely opened; if the illumination intensity is smaller than the third illumination intensity threshold value, whether the temperature in the vehicle is higher than a third temperature threshold value or not is judged, if the temperature in the vehicle is higher than the third temperature threshold value, a ninth reflective film control signal is output, the ninth reflective film control signal can control the reflective film to be opened to a third appointed position, if the temperature in the vehicle is lower than the third temperature threshold value, a tenth reflective film control signal is output, and the tenth reflective film control signal can enable the reflective film to be folded.
Optionally, the third designated position is calculated according to the in-vehicle temperature.
Optionally, the reflective film is made of a soft material, and the soft material includes a metal plastic film and a metal-plated cloth.
In a second aspect, an embodiment of the present application provides an apparatus for controlling heat transmission of a vehicle window, the apparatus including:
the detection module is used for detecting the working mode selected by the user;
the receiving module is used for receiving the environmental data detected by the environmental monitoring device under the condition that the working mode selected by the user is the automatic mode;
the output module is used for outputting a reflective film control signal according to the environment data so that the reflective film executes corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
Optionally, the environment monitoring device includes a temperature sensor, an illumination sensor, a vehicle window position sensor and an air conditioner opening state monitoring device;
correspondingly, the environment data comprises the temperature outside the vehicle, the temperature inside the vehicle, the illumination intensity, the position of the vehicle window and the opening state of the air conditioner.
Optionally, the detection module is further configured to:
detecting whether the vehicle is in a starting state or a flameout state.
Optionally, when the vehicle is in a starting state, the receiving module is specifically configured to:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the vehicle window position detected by the vehicle window position sensor, and receiving the air conditioner opening state detected by the air conditioner opening state detection device;
the output module is specifically configured to:
judging whether the temperature outside the vehicle is greater than a first temperature threshold value;
if the temperature outside the vehicle is greater than the first temperature threshold, judging whether the temperature outside the vehicle is greater than a second temperature threshold which is greater than the first temperature threshold, and if the temperature outside the vehicle is greater than the second temperature threshold, outputting a first reflective film control signal which can enable the reflective film to be opened to the position of the vehicle window; if the temperature outside the vehicle is smaller than the second temperature threshold, judging whether the illumination intensity is larger than a first illumination intensity threshold, if so, outputting a second reflective film control signal, and if so, enabling the reflective film to be opened to a first designated position; if the illumination intensity is smaller than the first illumination intensity threshold value, judging whether the air conditioner starting state is a heating state, and if the air conditioner starting state is the heating state, outputting a third reflective film control signal which can enable the reflective film to be opened to the car window position; if the starting state of the air conditioner is a non-heating state, calculating the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle, and if the temperature difference is higher than a first temperature difference threshold value, outputting a fourth reflective film control signal which can enable the reflective film to be opened to a second appointed position; if the temperature difference is lower than the first temperature difference threshold value, outputting a fifth reflective film control signal, wherein the fifth reflective film control signal can enable the reflective film to be retracted;
if the temperature outside the vehicle is smaller than the first temperature threshold, judging whether the starting state of the air conditioner is a heating state, if so, outputting a sixth reflective film control signal, wherein the sixth reflective film control signal can enable the reflective film to be opened to the position of the vehicle window; if the starting state of the air conditioner is a non-heating state, judging whether the illumination intensity is greater than a second illumination intensity threshold value, if so, outputting a seventh reflective film control signal, wherein the seventh reflective film control signal can enable the reflective film to be folded; if the illumination intensity is less than the second illumination intensity threshold, no signal is output.
Optionally, the first designated position is calculated according to the illumination intensity and the temperature outside the vehicle;
and the second appointed position is obtained by calculation according to the illumination intensity, the temperature outside the vehicle and the temperature inside the vehicle.
Optionally, the environment monitoring device further includes a battery level sensor;
accordingly, the environmental data further includes battery charge.
Optionally, when the vehicle is in a flameout state, the receiving module is specifically configured to:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the position of the vehicle window detected by the vehicle window position sensor, receiving the opening state of the air conditioner detected by the air conditioner opening state detection device, and receiving the electric quantity of the storage battery detected by the storage battery electric quantity sensor;
the output module is specifically configured to:
judging whether the electric quantity of the storage battery is larger than a first electric quantity threshold value;
if the electric quantity of the storage battery is smaller than the first electric quantity threshold value, no signal is output, and the storage battery enters a dormant state;
if the electric quantity of the storage battery is larger than the first electric quantity threshold value, judging whether the illumination intensity is larger than a third illumination intensity threshold value, if so, outputting an eighth reflective film control signal, wherein the eighth reflective film control signal can control the reflective film to be completely opened; if the illumination intensity is smaller than the third illumination intensity threshold value, whether the temperature in the vehicle is higher than a third temperature threshold value or not is judged, if the temperature in the vehicle is higher than the third temperature threshold value, a ninth reflective film control signal is output, the ninth reflective film control signal can control the reflective film to be opened to a third appointed position, if the temperature in the vehicle is lower than the third temperature threshold value, a tenth reflective film control signal is output, and the tenth reflective film control signal can enable the reflective film to be folded.
Optionally, the third designated position is calculated according to the in-vehicle temperature.
Optionally, the reflective film is made of a soft material, and the soft material includes a metal plastic film and a metal-plated cloth.
It can be seen from the foregoing technical solutions that the method for controlling heat transmission of a vehicle window provided in the embodiments of the present application is applied to an Electronic Control Unit (ECU), where the ECU detects a working mode selected by a user, receives environmental data detected by an environment monitoring device when the working mode selected by the user is an automatic mode, and determines and outputs a reflective film Control signal according to the received environmental data, so that a reflective film for isolating heat transmission between inside and outside of a vehicle can perform a corresponding action according to the reflective film Control signal, thereby controlling heat transmitted through the vehicle window. The method for controlling the heat transmission of the vehicle window can control the movement of the reflecting film according to the environmental data, so that the heat transmitted through the vehicle window is reasonably controlled, the rapid rise of the temperature in the vehicle due to sun exposure is prevented, and the rapid loss of the heat of the vehicle due to the excessively low temperature outside the vehicle is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be 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 that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a reflective film conditioning system provided in an embodiment of the present application;
fig. 2 is a schematic flow chart of a method for controlling heat transmission of a vehicle window according to an embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating a process for determining a control signal of a reflective film in an active state according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart illustrating the process of determining a control signal for the reflective film in an off state according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a position of a reflective film provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a device for controlling heat transmission of a vehicle window according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the application provides a method for controlling heat transmission of a vehicle window, which can control the heat transmitted through the vehicle window according to the environmental data of the current environment where the vehicle is located.
The following first introduces the core technical idea of the method for controlling the heat transmission amount of the vehicle window provided by the embodiment of the application:
the method for controlling the heat transmission of the vehicle window is applied to an Electronic Control Unit (ECU), the ECU detects a working mode selected by a user, receives environmental data detected by an environment monitoring device under the condition that the working mode selected by the user is an automatic mode, and determines and outputs a reflective film control signal according to the received environmental data, so that a reflective film for isolating the heat transmission between the inside and the outside of the vehicle can perform corresponding action according to the reflective film control signal, and the heat transmitted through the vehicle window is controlled. The method for controlling the heat transmission of the vehicle window can control the movement of the reflecting film according to the environmental data, so that the heat transmitted through the vehicle window is reasonably controlled, the rapid rise of the temperature in the vehicle due to sun exposure is prevented, and the rapid loss of the heat of the vehicle due to the excessively low temperature outside the vehicle is prevented.
It should be noted that the method for controlling the heat transmission amount of the vehicle window provided in the embodiment of the present application is mostly applied to control the movement of the reflective film mounted on the vehicle skylight, and of course, the method for controlling the heat transmission amount of the vehicle window may also be applied to control the movement of the reflective film mounted on other vehicle windows around the vehicle.
In the case of a window glass with a sunshade attached thereto, the reflective film is usually located between the window glass and the window sunshade; in the case of a window glass to which a sun blind is not attached, the above-described reflective film is located behind the window glass, i.e., on the passenger compartment side.
In order to further understand the method for controlling the heat transmission amount of the vehicle window provided in the embodiments of the present application, a reflective film adjustment system applied to the method for controlling the heat transmission amount of the vehicle window will be described below with reference to fig. 1.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a reflective film conditioning system according to an embodiment of the present disclosure. As shown in fig. 1, the reflective film adjusting system includes an environment monitoring device, an ECU, and a reflective film driving motor, wherein the environment monitoring device may include: temperature sensor, illumination sensor, door window position sensor, air conditioner open state monitoring devices and battery electric quantity sensor etc..
Each part in the environment monitoring device correspondingly detects the environment data of the current environment of the vehicle, and sends the detected environment data to the ECU, correspondingly, the ECU generates a reflective film control signal according to the environment data received by the ECU, and outputs the reflective film control signal to the reflective film driving motor, and the reflective film driving motor can enable the reflective film to execute corresponding action according to the reflective film control signal, so that the heat transmitted through the vehicle window is controlled.
The method for controlling the heat transmission amount of the vehicle window provided by the embodiment of the application is described as follows by the way of the embodiment:
referring to fig. 2, fig. 2 is a schematic flowchart of a method for controlling heat transmission of a vehicle window according to an embodiment of the present application. As shown in fig. 2, the method for controlling the heat transmission amount of the vehicle window comprises the following steps:
step 201: a user selected mode of operation is detected.
The ECU detects the working mode selected by the user, and if the mode selected by the user through the mode selection switch is detected to be the automatic mode, the ECU allows the user to control the heat penetrating through the vehicle window through automatically controlling the movement of the reflecting film.
Step 202: and receiving the environmental data detected by the environmental monitoring device under the condition that the working mode selected by the user is the automatic mode.
When the working mode selected by the user is detected to be the automatic mode, the environment monitoring device detects the environment data of the current environment of the automobile, the detected environment data is sent to the ECU, and correspondingly, the ECU receives the environment data detected by the environment monitoring device.
Optionally, before the ECU receives the environmental data sent by the environment monitoring device, the ECU may also detect that the vehicle is currently in a start state or a stop state, so as to control the heat transmitted through the window by using different control strategies in the start state and the stop state.
It should be noted that when the ECU detects that the vehicle is currently in a flameout state, the ECU may control all reflective films related to the window glass on the vehicle, specifically including a front windshield, a front door window, a rear windshield, and a reflective film related to a sunroof; when the ECU detects that the vehicle is currently in a starting state, the ECU only controls the skylight glass, the rear door glass and the reflecting film related to the rear windshield glass in consideration of driving safety.
On the contrary, if the ECU detects that the mode selected by the user through the mode selection switch is the manual mode, the fact that the user selects not to start the motion of the automatic control reflection film indicates that the user can manually adjust the reflection film arranged between the window glass and the window sunshade. When the user selects the manual mode, if the environment monitoring device detects that the temperature in the vehicle is too high or the electric quantity of the stored electricity meets the automatic control requirement, the ECU sends a prompt to the user through the vehicle networking system so as to prompt the user to start the automatic mode.
Optionally, the environment monitoring device may include a temperature sensor, an illumination sensor, a window position sensor, and an air conditioner opening state monitoring device. Accordingly, the environmental data detected by the environmental monitoring device may include: the air conditioner control device comprises a temperature sensor, an illumination sensor, a window position sensor, an air conditioner opening state monitoring device and an air conditioner control device, wherein the temperature outside the vehicle and the temperature inside the vehicle are detected by the temperature sensor, the illumination intensity detected by the illumination sensor, the window position detected by the window position sensor and the air conditioner opening state detected by the air conditioner opening state monitoring device.
Accordingly, the ECU receiving the environmental data sent by the environmental monitoring device includes:
the air conditioner starting state detection device comprises a temperature sensor, an illumination sensor, a window position sensor and an air conditioner starting state detection device.
Optionally, when the vehicle is in a flameout state, the environment monitoring device may further include a battery level sensor, and accordingly, the environment data detected by the environment monitoring device may further include a battery level detected by the battery level sensor.
Accordingly, the ECU receiving the environmental data sent by the environmental monitoring device includes:
the device comprises a temperature sensor, an illumination sensor, a window position sensor, an air conditioner opening state detection device and a storage battery electric quantity sensor, wherein the temperature sensor is used for detecting the temperature outside the vehicle and the temperature inside the vehicle, the illumination sensor is used for detecting the illumination intensity, the window position sensor is used for detecting the window position, the air conditioner opening state detection device is used for detecting the air conditioner opening state, and the storage battery electric quantity sensor is used for detecting.
Step 203: outputting a reflective film control signal according to the environment data so that the reflective film executes corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
After receiving the environmental data sent by the environmental monitoring device, the ECU determines how to control the movement of the reflecting film according to the received environmental data, namely determines a reflecting film control signal, and further outputs the reflecting film control signal to the reflecting film driving motor so that the reflecting film driving motor drives the reflecting film to perform corresponding actions, and the reflecting film is positioned between the window glass and the window shade.
Alternatively, when the ECU detects that the vehicle is currently in the activated state, the ECU determines that the reflective film control signal is implemented as shown in fig. 3.
The ECU firstly judges whether the temperature outside the vehicle is greater than a first temperature threshold value b 1;
if the temperature outside the vehicle is greater than the first temperature threshold b1, continuously judging whether the temperature outside the vehicle is greater than a second temperature threshold b2, wherein the second temperature threshold b2 is greater than the first temperature threshold b1, and if the temperature outside the vehicle is also greater than the second temperature threshold b2, indicating that the temperature outside the vehicle is higher at the moment.
If the temperature outside the vehicle is lower than a second temperature threshold b2, judging whether the illumination intensity is greater than a first illumination intensity threshold c1, if the illumination intensity is greater than a first illumination intensity threshold c1, indicating that the temperature outside the vehicle is not too high but the illumination intensity is strong, correspondingly, outputting a second reflective film control signal by the ECU, wherein the second reflective film control signal can enable a reflective film driving motor to drive the reflective film to be opened to a first designated position; the first designated position is calculated by the ECU according to the current illumination intensity, the outside temperature and the inside temperature, and when the first designated position is calculated specifically, the first designated position can be calculated by adopting an equation (1):
Figure BDA0001901064200000111
wherein x is the position at which the window glass is opened, c is the average specific heat capacity of the interior trim part of the passenger compartment, m is the average weight of the interior trim part of the passenger compartment, and T is0The target temperature in the passenger compartment is usually set to 25 ℃ for the optimum environment temperature of human body1Ambient temperature outside the vehicle, T2The in-vehicle temperature is α, P is the solar radiation intensity, β is the heat exchange coefficient (the heat exchange coefficient generated after sunlight penetrates through glass), and S is the window glass area.
Note that, the above-mentioned T1、T2α is the heat exchange coefficient between the inside and outside of the vehicle, which is determined by the temperature inside and outside the vehicle, the temperature difference and the vehicle, the coefficient changes with the temperature, β is the heat exchange coefficient generated after the sunlight penetrates the glass, which is mainly determined by the relative solar radiation, the infrared transmittance of the glass, the heat absorption coefficient of the inside decoration part of the vehicle, α and β need to be controlled and calibrated, namely a calibration database is established, different coefficients are calibrated for different types of vehicles, c and m are determined by the vehicle itself, the numerical values for different types of vehicles are different, and the numerical values are different for different vehicles.
If the illumination intensity is smaller than a first illumination intensity threshold value c1, continuously judging whether the air conditioner is in a heating state or not, if the air conditioner is in the heating state, indicating that the temperature in the vehicle is low currently, correspondingly, the ECU outputs a third reflective film control signal, and the third reflective film control signal can enable a reflective film driving motor to drive a reflective film to be opened to the position of a vehicle window so as to prevent heat in the vehicle from being dissipated; if the air conditioner is in a non-heating state, calculating the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle, if the temperature difference is higher than a first temperature difference threshold value w1, indicating that the temperature inside the vehicle is more different from the temperature outside the vehicle, correspondingly, outputting a fourth reflective film control signal by the ECU, wherein the fourth reflective film control signal can enable a reflective film driving motor to drive a reflective film to open to a second designated position, the second designated position is calculated by the ECU according to the illumination intensity, the temperature outside the vehicle and the temperature inside the vehicle, the specific calculation method of the second designated position is the same as that of the first designated position, but the calibration coefficient adopted for calculating the second designated position is possibly different from that adopted for calculating the first designated position; if the temperature difference is lower than the first temperature difference threshold value w1, it indicates that the difference between the internal temperature and the external temperature of the vehicle is not large, and accordingly, the ECU outputs a fifth reflective film control signal, and the fifth reflective film control signal enables the reflective film driving motor to drive the reflective film to retract.
If the temperature outside the vehicle is less than the first temperature threshold b1, continuously judging whether the air conditioner is in a heating state or not, if the air conditioner is in the heating state, indicating that the temperature outside the vehicle is low and the vehicle is heating, correspondingly, the ECU outputs a sixth reflective film control signal which can enable the reflective film driving motor to drive the reflective film to be opened to the position of the vehicle window so as to prevent the heat in the vehicle from dissipating; if the air conditioner is in a non-heating state, judging whether the illumination intensity is greater than a second illumination intensity threshold value c2, if the illumination intensity is greater than a second illumination intensity threshold value c2, indicating that the illumination intensity outside the vehicle is stronger, and correspondingly, outputting a seventh reflective film control signal by the ECU, wherein the seventh reflective film control signal can enable a reflective film driving motor to drive a reflective film to fold, and the temperature inside the vehicle is increased by utilizing the illumination intensity; if the illumination intensity is less than the second illumination intensity threshold c2, no signal is output.
It should be understood that the specific values of the first temperature threshold b1, the second temperature threshold b2, the first illumination intensity threshold c1, the second illumination intensity threshold c2 and the first temperature difference threshold w1 can be set according to practical situations, and the specific values are not limited in any way.
Alternatively, when the ECU detects that the vehicle is currently in a key-off state, the ECU determines that the reflective film control signal is implemented as shown in fig. 4.
The ECU firstly judges whether the electric quantity of the storage battery is larger than a first electric quantity threshold value a 1;
if the electric quantity of the storage battery is smaller than the first electric quantity threshold value a1, the electric quantity of the storage battery is insufficient, and the storage battery is not suitable for controlling the reflection film to automatically move, so that no signal is output, and the storage battery enters a sleep state.
If the electric quantity of the storage battery is larger than the first electric quantity threshold value a1, judging whether the illumination intensity is larger than a third illumination intensity threshold value c3, if the illumination intensity is larger than a third illumination intensity threshold value c3, indicating that the illumination intensity outside the vehicle is stronger, and correspondingly, the ECU outputs an eighth reflective film control signal in order to prevent the temperature inside the vehicle from rapidly rising due to too strong illumination, wherein the eighth reflective film control signal can control a reflective film driving motor to drive a reflective film to be completely opened.
If the illumination intensity is less than a third illumination intensity threshold value c3, judging whether the temperature in the vehicle is higher than a third temperature threshold value b3, if the temperature in the vehicle is higher than a third temperature threshold value b3, indicating that the temperature in the vehicle is higher at this time, correspondingly, the ECU outputs a ninth reflective film control signal, the ninth reflective film control signal can control the reflective film driving motor to drive the reflective film to open to a third designated position, the third designated position is calculated by the ECU according to the temperature in the vehicle, and when the third designated position is calculated specifically, the third designated position can be calculated by adopting an equation (2):
Figure BDA0001901064200000131
wherein x is the position at which the window glass is opened, c is the average specific heat capacity of the interior trim part of the passenger compartment, m is the average weight of the interior trim part of the passenger compartment, and T is0The target temperature in the passenger compartment is usually set to 25 ℃ for the optimum environment temperature of human body2The in-vehicle temperature is α, P is the solar radiation intensity, β is the heat exchange coefficient (the heat exchange coefficient generated after sunlight penetrates through glass), and S is the window glass area.
If the temperature in the vehicle is lower than the third temperature threshold b3, the temperature in the vehicle is lower at this time, and accordingly the ECU outputs a tenth reflective film control signal, which enables the reflective film driving motor to drive the reflective film to retract, so as to raise the temperature in the vehicle by using the heat outside the vehicle.
It should be noted that the reflective film is located at a position as shown in fig. 5, and for a window including a sunshade, the reflective film is located between a window glass and a window sunshade; for windows without a sun shade, the reflective film is positioned behind the window glass. The reflecting film is usually a soft material, and can be specifically a metal plastic film or a metal-plated cloth.
The method for controlling the heat transmission of the vehicle window is applied to the ECU, the ECU detects the working mode selected by a user, receives the environmental data detected by the environment monitoring device under the condition that the working mode selected by the user is the automatic mode, and determines and outputs the reflective film control signal according to the received environmental data, so that the reflective film for isolating the heat transmission between the interior and the exterior of the vehicle can perform corresponding action according to the reflective film control signal, and the heat transmitted through the vehicle window is controlled. The method for controlling the heat transmission of the vehicle window can control the movement of the reflecting film according to the environmental data, so that the heat transmitted through the vehicle window is reasonably controlled, the rapid rise of the temperature in the vehicle due to sun exposure is prevented, and the rapid loss of the heat of the vehicle due to the excessively low temperature outside the vehicle is prevented.
An embodiment of the present application further provides a device for controlling heat transmission of a vehicle window, as shown in fig. 6, which is a schematic structural diagram of the device for controlling heat transmission of a vehicle window, and the device for controlling heat transmission of a vehicle window includes:
a detection module 601, configured to detect a working mode selected by a user;
a receiving module 602, configured to receive environmental data detected by an environmental monitoring apparatus when the operating mode selected by the user is an automatic mode;
an output module 603, configured to output a reflective film control signal according to the environment data, so that the reflective film performs a corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
Optionally, the environment monitoring device includes a temperature sensor, an illumination sensor, a vehicle window position sensor and an air conditioner opening state monitoring device;
correspondingly, the environment data comprises the temperature outside the vehicle, the temperature inside the vehicle, the illumination intensity, the position of the vehicle window and the opening state of the air conditioner.
Optionally, the detecting module 601 is further configured to:
detecting whether the vehicle is in a starting state or a flameout state.
Optionally, when the vehicle is in a starting state, the receiving module 602 is specifically configured to:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the vehicle window position detected by the vehicle window position sensor, and receiving the air conditioner opening state detected by the air conditioner opening state detection device;
the output module 603 is specifically configured to:
judging whether the temperature outside the vehicle is greater than a first temperature threshold value;
if the temperature outside the vehicle is greater than the first temperature threshold, judging whether the temperature outside the vehicle is greater than a second temperature threshold which is greater than the first temperature threshold, and if the temperature outside the vehicle is greater than the second temperature threshold, outputting a first reflective film control signal which can enable the reflective film to be opened to the position of the vehicle window; if the temperature outside the vehicle is smaller than the second temperature threshold, judging whether the illumination intensity is larger than a first illumination intensity threshold, if so, outputting a second reflective film control signal, and if so, enabling the reflective film to be opened to a first designated position; if the illumination intensity is smaller than the first illumination intensity threshold value, judging whether the air conditioner starting state is a heating state, and if the air conditioner starting state is the heating state, outputting a third reflective film control signal which can enable the reflective film to be opened to the car window position; if the starting state of the air conditioner is a non-heating state, calculating the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle, and if the temperature difference is higher than a first temperature difference threshold value, outputting a fourth reflective film control signal which can enable the reflective film to be opened to a second appointed position; if the temperature difference is lower than the first temperature difference threshold value, outputting a fifth reflective film control signal, wherein the fifth reflective film control signal can enable the reflective film to be retracted;
if the temperature outside the vehicle is smaller than the first temperature threshold, judging whether the starting state of the air conditioner is a heating state, if so, outputting a sixth reflective film control signal, wherein the sixth reflective film control signal can enable the reflective film to be opened to the position of the vehicle window; if the starting state of the air conditioner is a non-heating state, judging whether the illumination intensity is greater than a second illumination intensity threshold value, if so, outputting a seventh reflective film control signal, wherein the seventh reflective film control signal can enable the reflective film to be folded; if the illumination intensity is less than the second illumination intensity threshold, no signal is output.
Optionally, the first designated position is calculated according to the illumination intensity and the temperature outside the vehicle;
and the second appointed position is obtained by calculation according to the illumination intensity, the temperature outside the vehicle and the temperature inside the vehicle.
Optionally, the environment monitoring device further includes a battery level sensor;
accordingly, the environmental data further includes battery charge.
Optionally, when the vehicle is in a flameout state, the receiving module 602 is specifically configured to:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the position of the vehicle window detected by the vehicle window position sensor, receiving the opening state of the air conditioner detected by the air conditioner opening state detection device, and receiving the electric quantity of the storage battery detected by the storage battery electric quantity sensor;
the output module 603 is specifically configured to:
judging whether the electric quantity of the storage battery is larger than a first electric quantity threshold value;
if the electric quantity of the storage battery is smaller than the first electric quantity threshold value, no signal is output, and the storage battery enters a dormant state;
if the electric quantity of the storage battery is larger than the first electric quantity threshold value, judging whether the illumination intensity is larger than a third illumination intensity threshold value, if so, outputting an eighth reflective film control signal, wherein the eighth reflective film control signal can control the reflective film to be completely opened; if the illumination intensity is smaller than the third illumination intensity threshold value, whether the temperature in the vehicle is higher than a third temperature threshold value or not is judged, if the temperature in the vehicle is higher than the third temperature threshold value, a ninth reflective film control signal is output, the ninth reflective film control signal can control the reflective film to be opened to a third appointed position, if the temperature in the vehicle is lower than the third temperature threshold value, a tenth reflective film control signal is output, and the tenth reflective film control signal can enable the reflective film to be folded.
Optionally, the third designated position is calculated according to the in-vehicle temperature.
Optionally, the reflective film is made of a soft material, and the soft material includes a metal plastic film and a metal-plated cloth.
The device of control door window heat transmission volume that this application embodiment provided under the operating mode that detects the user selection is automatic mode's the condition, receives the environmental data that environment monitoring devices detected to according to the environmental data that receive, confirm and output reflective film control signal, so that the reflective film that makes isolated heat transfer between the car interior and the car exterior can carry out corresponding action according to this reflective film control signal, thereby the control passes through the heat of door window penetration. The device that the control door window passed through heat that this application embodiment provided can be according to the motion of environmental data control reflectance coating to rationally control the heat that passes through the door window and see through, both prevented to lead to the interior temperature rapid rise because of the sun insolate, prevented again because of the outer temperature of car leads to the vehicle heat to scatter and disappear rapidly excessively.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for controlling the heat transmission quantity of a vehicle window is applied to an Electronic Control Unit (ECU), and the method comprises the following steps:
detecting a working mode selected by a user;
receiving environmental data detected by an environmental monitoring device under the condition that the working mode selected by the user is an automatic mode;
outputting a reflective film control signal according to the environment data so that the reflective film executes corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
2. The method of claim 1, wherein the environmental monitoring devices include temperature sensors, light sensors, window position sensors, and air conditioner on status monitoring devices;
correspondingly, the environment data comprises the temperature outside the vehicle, the temperature inside the vehicle, the illumination intensity, the position of the vehicle window and the opening state of the air conditioner.
3. The method of claim 1, wherein prior to said receiving environmental data detected by an environmental monitoring device, the method further comprises:
detecting whether the vehicle is in a starting state or a flameout state.
4. The method of claim 3, wherein receiving environmental data detected by an environmental monitoring device while the vehicle is in the launch state comprises:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the vehicle window position detected by the vehicle window position sensor, and receiving the air conditioner opening state detected by the air conditioner opening state detection device;
the outputting a reflective film control signal according to the environment data to make the reflective film execute corresponding actions according to the reflective film control signal includes:
judging whether the temperature outside the vehicle is greater than a first temperature threshold value;
if the temperature outside the vehicle is greater than the first temperature threshold, judging whether the temperature outside the vehicle is greater than a second temperature threshold which is greater than the first temperature threshold, and if the temperature outside the vehicle is greater than the second temperature threshold, outputting a first reflective film control signal which can enable the reflective film to be opened to the position of the vehicle window; if the temperature outside the vehicle is smaller than the second temperature threshold, judging whether the illumination intensity is larger than a first illumination intensity threshold, if so, outputting a second reflective film control signal, and if so, enabling the reflective film to be opened to a first designated position; if the illumination intensity is smaller than the first illumination intensity threshold value, judging whether the air conditioner starting state is a heating state, and if the air conditioner starting state is the heating state, outputting a third reflective film control signal which can enable the reflective film to be opened to the car window position; if the starting state of the air conditioner is a non-heating state, calculating the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle, and if the temperature difference is higher than a first temperature difference threshold value, outputting a fourth reflective film control signal which can enable the reflective film to be opened to a second appointed position; if the temperature difference is lower than the first temperature difference threshold value, outputting a fifth reflective film control signal, wherein the fifth reflective film control signal can enable the reflective film to be retracted;
if the temperature outside the vehicle is smaller than the first temperature threshold, judging whether the starting state of the air conditioner is a heating state, if so, outputting a sixth reflective film control signal, wherein the sixth reflective film control signal can enable the reflective film to be opened to the position of the vehicle window; if the starting state of the air conditioner is a non-heating state, judging whether the illumination intensity is greater than a second illumination intensity threshold value, if so, outputting a seventh reflective film control signal, wherein the seventh reflective film control signal can enable the reflective film to be folded; if the illumination intensity is less than the second illumination intensity threshold, no signal is output.
5. The method of claim 4, wherein the first designated location is calculated from the illumination intensity and the off-board temperature;
and the second appointed position is obtained by calculation according to the illumination intensity, the temperature outside the vehicle and the temperature inside the vehicle.
6. The method of claim 3, wherein the environmental monitoring device further comprises a battery level sensor;
accordingly, the environmental data further includes battery charge.
7. The method of claim 6, wherein receiving environmental data detected by an environmental monitoring device while the vehicle is in an off state comprises:
receiving the temperature outside the vehicle and the temperature inside the vehicle detected by the temperature sensor, receiving the illumination intensity detected by the illumination sensor, receiving the position of the vehicle window detected by the vehicle window position sensor, receiving the opening state of the air conditioner detected by the air conditioner opening state detection device, and receiving the electric quantity of the storage battery detected by the storage battery electric quantity sensor;
the outputting a reflective film control signal according to the environment data to make the reflective film execute corresponding actions according to the reflective film control signal includes:
judging whether the electric quantity of the storage battery is larger than a first electric quantity threshold value;
if the electric quantity of the storage battery is smaller than the first electric quantity threshold value, no signal is output, and the storage battery enters a dormant state;
if the electric quantity of the storage battery is larger than the first electric quantity threshold value, judging whether the illumination intensity is larger than a third illumination intensity threshold value, if so, outputting an eighth reflective film control signal, wherein the eighth reflective film control signal can control the reflective film to be completely opened; if the illumination intensity is smaller than the third illumination intensity threshold value, whether the temperature in the vehicle is higher than a third temperature threshold value or not is judged, if the temperature in the vehicle is higher than the third temperature threshold value, a ninth reflective film control signal is output, the ninth reflective film control signal can control the reflective film to be opened to a third appointed position, if the temperature in the vehicle is lower than the third temperature threshold value, a tenth reflective film control signal is output, and the tenth reflective film control signal can enable the reflective film to be folded.
8. The method according to claim 7, wherein the third specified position is calculated from the in-vehicle temperature.
9. The method of claim 1, wherein the reflective film is a flexible material comprising a metal plastic film, a metallized cloth.
10. An apparatus for controlling the amount of heat transmitted through a vehicle window, the apparatus comprising:
the detection module is used for detecting the working mode selected by the user; the receiving module is used for receiving the environmental data detected by the environmental monitoring device under the condition that the working mode selected by the user is the automatic mode;
the output module is used for outputting a reflective film control signal according to the environment data so that the reflective film executes corresponding action according to the reflective film control signal; the reflective film is used for isolating heat transfer between the interior and the exterior of the vehicle.
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