EP4642657A1

EP4642657A1 - Light control method and system for vehicle, vehicle and readable storage medium

Info

Publication number: EP4642657A1
Application number: EP23910565.3A
Authority: EP
Inventors: Siteng MA; Jiankai YU; Hui Shao
Original assignee: Saint Gobain Sekurit France SAS
Current assignee: Saint Gobain Sekurit France SAS
Priority date: 2022-12-28
Filing date: 2023-12-26
Publication date: 2025-11-05
Also published as: CN117325757A; WO2024140640A1

Abstract

A light control method for a vehicle, wherein the vehicle includes a light-emitting element and an in-vehicle glass, and the light control method comprises: obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first light intensity value of the predetermined vehicle interior light (step 110); obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle (step 120); comparing the second light intensity value with a first predetermined light intensity threshold to obtain a comparison result (step 130); setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result (step 140). Further, a light control method for controlling a light-emitting element according to a sound and a light control method for adjusting the color temperature are provided. The light control method can dynamically optimize the light effect inside the vehicle in conjunction with the light environment in which the vehicle is located.

Description

LIGHT CONTROL METHOD AND SYSTEM FOR VEHICLE, VEHICLE AND READABLE STORAGE MEDIUM

FIELD OF THE DISCLOSURE
The present disclosure relates to the field of control technology related to vehicles, and more specifically to a light control method for a vehicle, a light control system for a vehicle, a vehicle including the light control system for the vehicle, a computer-readable storage medium, and a computer program product.

BACKGROUND

With the formation of the development trend of automotive intelligence, the demand for interaction between people and vehicles is increasing day by day. In the process of interacting between people and vehicles, the control of lighting inside the vehicle is particularly important. Therefore, for intelligent vehicles, the demand for intelligent light control is increasing day by day, which can provide more scenes and atmosphere experiences for the drivers and passengers of the vehicle.
The existing methods for controlling the vehicle interior light are relatively simple, usually requiring users to specify light intensity or color temperature for the vehicle interior lights via the vehicle machine interface, which cannot interact with the environment in which the vehicle is located, that is, the light control parameters of the vehicle interior light cannot be dynamically adjusted according to the environment in which the vehicle is located. Therefore, the existing light control methods for vehicle interior lights and the lighting effects thereof are not ideal.

SUMMARY

In the prior art, the light control parameters of vehicle interior lights cannot be dynamically adjusted, resulting in unstable light effects that may vary depending on the vehicle's environment. For the aforementioned technical problem, the inventor of the present disclosure proposes to combine the light transmittance of the in-vehicle glass with the light effect achieved to dynamically adjust, so as to dynamically optimize the light effect inside the vehicle in conjunction with the light environment in which the vehicle is located.
Specifically, to achieve dynamic adjustment of the light intensity value inside the vehicle, a first aspect of the present disclosure proposes a light control method for a vehicle, wherein the vehicle includes a light-emitting element and an in-vehicle glass, and the light control method comprises:
obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first light intensity value of the predetermined vehicle interior light;
obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle;
comparing the second light intensity value with a first predetermined light intensity threshold to obtain a comparison result;
setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result.
In this way, the influence of light outside the vehicle will be considered in the process of achieving the predetermined vehicle interior light, and the predetermined vehicle interior light will be dynamically approached by setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element, in order to satisfy the use needs of the vehicle users as much as possible.
In an embodiment according to the present disclosure, the in-vehicle glass includes a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result comprises:
when the second light intensity value is lower than or equal to the first predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value; and
controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result comprises:
when the second light intensity value is higher than the first predetermined light intensity threshold, adjusting the light transmittance of the in-vehicle glass based on the first light intensity value and the second light intensity value; and
controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
In this way, when the second light intensity value is higher than the first predetermined light intensity threshold, that is, when the light intensity value of the light outside the vehicle is relatively large and cannot be ignored, first the light transmittance of the in-vehicle glass is adjusted based on the first light intensity value and the second light intensity value, and then, after the light transmittance is adjusted, the brightness of the light emitted by the light-emitting element is controlled by comprehensively considering the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
In an embodiment according to the present disclosure, controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass comprises:
when the first light intensity value is less than or equal to the product of the second light intensity value and the highest light transmittance of the in-vehicle glass, turning off the light-emitting element.
In this way, when the light outside the vehicle passing through the in-vehicle glass is already enough to achieve the predetermined vehicle interior light, for the purpose of energy conservation and environmental protection, the light-emitting element can be turned off at this time.
In one embodiment according to the present disclosure, controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass comprises:
when the first light intensity value is greater than the product of the second light intensity value and the highest light transmittance of the in-vehicle glass, setting the light transmittance of the in-vehicle glass to the highest light transmittance and turning on the light-emitting element.
In this way, when the light outside the vehicle passing through the in-vehicle glass is not enough to achieve the predetermined vehicle interior light, the first step is to maximize the use of the light outside the vehicle, that is, setting the light transmittance of the in-vehicle glass to the highest light transmittance, and then the light emitting element is turned on when reinforcement is further needed.
In an embodiment according to the present disclosure, the light control method further comprises:
determining the brightness of the light emitted by the light-emitting element according to the difference between the first light intensity value and the product of the second light intensity value and the highest light transmittance of the in-vehicle glass.
In an embodiment according to the present disclosure, the light control method further comprises:
obtaining a third signal associated with the actual light inside the vehicle, wherein the third signal includes a third light intensity value of the actual light inside the vehicle;
adjusting the light transmittance of the in-vehicle glass based on the first and third light intensity values until the light transmittance of the in-vehicle glass is set to the lowest or highest light transmittance, or until the difference between the first and third light intensity values is 0; and
controlling the brightness of the light emitted by the light-emitting element based on the first and third light intensity values.
In this way, more influencing factors can be considered, such as considering the actual light inside the vehicle. After obtaining the relevant parameters of the actual light inside the vehicle, the light transmittance of the in-vehicle glass can be further set based on the actual light inside the vehicle and the predetermined vehicle interior light, and the brightness of the light emitted by the light-emitting element can be further controlled based on the first and third light intensity values.
In an embodiment according to the present disclosure, the light control method further comprises:
when the light transmittance of the in-vehicle glass is set to the highest light transmittance and the third light intensity value is less than the first light intensity value, determining the brightness of the light emitted by the light-emitting element based on the difference between the third light intensity value and the first light intensity value.
In addition, a second aspect of the present disclosure relates to a light control method for a vehicle, wherein the vehicle comprises a light-emitting element and an in-vehicle glass, and the light control method comprises:
setting the light transmittance of the in-vehicle glass to a fixed value;
obtaining a fourth signal associated with sound inside the vehicle;
performing signal processing on the fourth signal to obtain a control signal; and
controlling the brightness of the light emitted by the light-emitting element based on the control signal.
In this way, it is possible to dynamically control the brightness of the light emitted by the light-emitting element as the sound inside the vehicle changes based on the sound after setting the light transmittance of the in-vehicle glass, so that the brightness of the light emitted by the light-emitting element changes with the sound, more specifically, the brightness of the light emitted by the light-emitting element reflects the change of the sound inside the vehicle, which can achieve a better user experience, allowing users to feel the changes of sound through light.
In an embodiment according to the present disclosure, the in-vehicle glass comprises a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass to a fixed value comprises:
setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%.
In this way, in order to make the brightness of the light emitted by the light-emitting element change with the sound and make the user perceive that, it is necessary to minimize the impact of the light outside the vehicle on the vehicle interior light effect, therefore, it is necessary to set the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%to reduce the impact of the light outside the vehicle on the vehicle interior light effect.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass to a fixed value comprises:
obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle;
determining whether the second light intensity value is lower than or equal to a second predetermined light intensity threshold, and
when the second light intensity value is lower than or equal to the second predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value;
when the second light intensity value is higher than the second predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%.
In one embodiment according to the present disclosure, obtaining a fourth signal associated with sound inside the vehicle comprises:
obtaining the fourth signal associated with the sound inside the vehicle via a sound sensor; or
obtaining the fourth signal associated with audio played by the vehicle via an onboard bus.
In this way, the fourth signal associated with the sound inside the vehicle can be obtained by signal acquisition through a sound sensor, or the fourth signal associated with the audio played by the vehicle can be directly obtained through the onboard bus.
In an embodiment according to the present disclosure, performing signal processing on the fourth signal to obtain a control signal comprises:
sampling the fourth signal to analyze the amplitude of the fourth signal; and
generating a brightness component of the control signal based on the amplitude.
In this way, through sampling the fourth signal to analyze the amplitude of the fourth signal, and then generating the brightness component of the control signal based on the amplitude, the technical effect of the brightness of the light emitted by the light-emitting element changing with the height fluctuation of the sound is achieved.
In an embodiment according to the present disclosure, obtaining the fourth signal associated with the sound inside the vehicle via a sound sensor comprises:
obtaining an analog signal associated with the sound inside the vehicle via a sound sensor;
converting the analog signal into a digital signal via an analog-to-digital converter to generate the fourth signal.
Furthermore, a third aspect of the present disclosure relates to a light control method for a vehicle in light of the inventive concept of dynamically adjusting the light transmittance of in-vehicle glass in conjunction with the achieved light effect in the present disclosure, the vehicle comprises a light-emitting element and an in-vehicle glass, wherein the light control method comprises:
obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first color temperature value of the predetermined vehicle interior light;
obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value and a second color temperature value of the light outside the vehicle;
comparing the second light intensity value with a third predetermined light intensity threshold to obtain a comparison result;
setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result.
In this way, the influence of the light outside the vehicle will be considered in the process of achieving the predetermined vehicle interior light, so as to dynamically approach the predetermined vehicle interior light by setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element, in order to satisfy the use needs of the vehicle users as much as possible.
In an embodiment according to the present disclosure, the in-vehicle glass comprises a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result comprises:
when the second light intensity value is lower than or equal to the third predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value; and
controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result comprises:
determining the color temperature difference between the first color temperature value and the second color temperature value when the second light intensity value is higher than the third predetermined light intensity threshold; and
setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference.
When the second light intensity value is higher than the third predetermined light intensity threshold, that is, when the light outside the vehicle cannot be ignored, the color temperature difference between the first color temperature value and the second color temperature value is considered, and the light transmittance of the in-vehicle glass is set and the color temperature value of the light emitted by the light-emitting element is controlled according to the color temperature difference.
In one embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference comprises:
when the color temperature difference is higher than a predetermined color temperature threshold, setting the light transmittance of the in-vehicle glass to the lowest light transmittance; and
controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
At this time, if the color temperature difference is higher than the predetermined color temperature threshold, that is, the difference between the first color temperature value and the second color temperature value is large, if the light outside the vehicle is allowed to penetrate too much into the vehicle, it is difficult to achieve the predetermined color temperature of the vehicle interior light, therefore, it is necessary to set the light transmittance of the in-vehicle glass to the lowest light transmittance to reduce the impact of the light outside the vehicle on the vehicle interior light effect.
In an embodiment according to the present disclosure, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference comprises:
when the color temperature difference is lower than or equal to the predetermined color temperature threshold, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value, the second light intensity value, and the second color temperature value.
In this case, namely, if the color temperature difference is lower than or equal to the predetermined color temperature threshold, that is, the difference between the first and second color temperature values is not significant, more the light outside the vehicle can be used to achieve the effect of the vehicle interior light, and the color temperature value of the light emitted by the light-emitting element can be controlled to achieve this. In specific control, the light transmittance of the in-vehicle glass can be set and the color temperature value of the light emitted by the light-emitting element can be controlled based on the first color temperature value, the second light intensity value, and the second color temperature value.
In one embodiment according to the present disclosure, the light control method further comprises:
obtaining a third signal associated with actual light inside the vehicle, wherein the third signal includes a third color temperature value of the actual light inside the vehicle; and
controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value and the third color temperature value.
In this way, more influencing factors can be considered, such as the actual light inside the vehicle, when the relevant parameters of the actual light inside the vehicle are obtained, the color temperature value of the light emitted by the light-emitting element is controlled based on the first color temperature value and the third color temperature value.
Furthermore, a fourth aspect of the present disclosure relates to a light control system for a vehicle, wherein the light control system comprises a processor and a memory storing executable instructions, which when executed cause the processor to execute the light control method according to any of the first to third aspects of the present disclosure.
In an embodiment according to the present disclosure, the light control system further comprises an in-vehicle glass with a dimming film.
In one embodiment according to the present disclosure, the dimming film comprises a PDLC film or an electrochromic film (EC film) .
In one embodiment according to the present disclosure, the light control system further comprises a light-emitting element.
Furthermore, a fifth aspect of the present disclosure relates to a vehicle comprising a light control system according to the fourth aspect of the present disclosure.
In addition, a sixth aspect of the present disclosure relates to a computer-readable storage medium having computer-executable instructions stored thereon, and the computer-executable instructions are used to execute the light control method according to any of the first to third aspects of the present disclosure.
Finally, a seventh aspect of the present disclosure relates to a computer program product tangibly stored on a computer-readable storage medium and including computer-executable instructions, which when executed cause at least one processor to execute the light control method according to any of the first to third aspects of the present disclosure.
In summary, in the technical solution according to the present disclosure, the light control method and light control system of the present disclosure combine the light transmittance of the in-vehicle glass with the light effect achieved to dynamically adjust so as to dynamically optimize the light effect inside the vehicle in combination with the light environment in which the vehicle is located.

BRIEF DESCRIPTION OF THE DRAWINGS

In conjunction with the accompanying drawings and with reference to the following detailed explanations, the features, advantages, and other aspects of each embodiment of the present disclosure will become more apparent, several embodiments of the present disclosure are illustrated by way of example and not by way of limitation here, in the accompanying drawings:
FIG. 1 illustrates a flowchart of a light control method 100 according to an embodiment of the present disclosure;
FIG. 2 illustrates a flowchart of a light control method 200 according to another embodiment of the present disclosure;
FIG. 3 illustrates a flowchart of a light control method 300 according to yet another embodiment of the present disclosure;
FIG. 4 illustrates a schematic diagram of a light control system 400 according to an embodiment of the present disclosure;
Fig. 5 shows a schematic diagram of a light control system 500 according to another embodiment of the present disclosure; and
Fig. 6 shows a schematic diagram of a light control system 600 according to yet another embodiment of the present disclosure.

DETAILED DESCRIPTION

Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Although the example methods and apparatuses described below include software and/or firmware executed on hardware in other components, it should be noted that these examples are only illustrative and should not be regarded as limited. For example, it can be considered that any or all hardware, software, and firmware components can be implemented exclusively in hardware, exclusively in software, or in any combination of hardware and software. Therefore, although example methods and apparatuses have been described below, those skilled in the art should easily appreciate that the provided examples are not used to limit the ways for implementing these methods and devices.
In addition, the flowcharts and block diagrams in the accompanying drawings illustrate the possible implemented architecture, functions, and operations of the method and system according to various embodiments of the present disclosure. It should be noted that the functions noted in the blocks may also occur in a different order than the order noted in the drawings. For example, two blocks shown in succession may be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the flowchart and/or block diagrams, and the combination of the blocks in the flowchart and/or block diagrams can be implemented using a dedicated hardware-based system that performs the specified functions or operations, or can be implemented using a combination of dedicated hardware and computer instructions.
The terms "including" , "comprising" and similar terms used in this disclosure are open-ended terms, i.e., "including/containing, but not limited to" indicating that other elements may also be included. The term "based on" is open-ended. The term "based on" is "based at least in part on" . The term "one embodiment" means "at least one embodiment" ; the term "another embodiment" means "at least one additional embodiment" and so on.
As mentioned earlier, in the prior art, the light control parameters of the vehicle interior lights cannot be dynamically adjusted, resulting in unstable light effects that may vary with the environment in which the vehicle is located. For the aforementioned technical issues, the inventor of the present disclosure contemplated the idea of combining the light transmittance of the in-vehicle glass and the achieved light effect to dynamically adjust, so as to dynamically optimize the light effect inside the vehicle in conjunction with the light environment in which the vehicle is located.
Specifically, to achieve dynamic adjustment of the light intensity value inside the vehicle, the intensity of the light outside the vehicle will be considered in the technical solution disclosed in the present disclosure. Correspondingly, the technical solution disclosed herein will control the light transmittance of the in-vehicle glass according to the light conditions outside the vehicle, and comprehensively control the light emitted by the light-emitting element inside the vehicle based on these factors.
The following will provide a detailed explanation of the technical solution according to the present disclosure according to several embodiments, that is, the light control method disclosed according to the present disclosure will be described in conjunction with FIGS. 1 to 3. Among them, FIG. 1 illustrates a flowchart of a light control method 100 according to an embodiment of the present disclosure, FIG. 2 illustrates a flowchart of a light control method 200 according to another embodiment of the present disclosure, and FIG. 3 illustrates a flowchart of a light control method 300 according to yet another embodiment of the present disclosure.
It can be seen from FIG. 1 that the light control method 100 for a vehicle shown in FIG. 1 according to the present disclosure comprises at least four steps, namely, first, obtaining a first signal associated with a predetermined vehicle interior light in method step 110, wherein the first signal includes a first light intensity value of the predetermined vehicle interior light, for example, by receiving the selection related to the predetermined vehicle interior light set by the driver or passengers through the vehicle machine interface; then, in method step 120, obtaining a second signal associated with the light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle, for example, by an optical sensor disposed outside the vehicle; next, in method step 130, comparing the second light intensity value with the first predetermined light intensity threshold to obtain a comparison result; and finally in method step 140, setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result. Here, the setting of the light transmittance of the in-vehicle glass can be achieved in different ways, as long as the light from outside the vehicle penetrating into the vehicle can be controlled. For example, through an electronic sunshade, the light transmittance of the in-vehicle glass can be set by covering the area of the in-vehicle glass. Preferably, the in-vehicle glass comprises a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately.
In this way, the light control method 100 for a vehicle according to the present disclosure will consider the influence of light outside the vehicle during the process of achieving the predetermined vehicle interior light in order to dynamically approach the predetermined vehicle interior light by setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element, in order to satisfy the use needs of the vehicle users as much as possible.
For example, in the case that the light outside the vehicle is 8000 lux, if the intensity requirement for the predetermined vehicle interior light is 4400 lux, then for example, the light transmittance of the in-vehicle glass can be set to 55%, it can directly satisfy the requirement for the predetermined vehicle interior light. When the light outside the vehicle is 3000 lux, if the intensity requirement for the predetermined vehicle interior light is 4800 lux, then for example, the light transmittance of the in-vehicle glass can be set to the highest light transmittance of 60%, which then is combined with the light emitted by the light-emitting element to satisfy the requirement for the predetermined vehicle interior light. When the light outside the vehicle is 2 lux, since the light outside the vehicle is too weak, which has little impact on the vehicle interior light, the light transmittance of the in-vehicle glass can be not specifically set, and the light emitted by the light-emitting element can be directly used to satisfy the requirement for the predetermined vehicle interior light.
In the specific implementation of the light control method, method step 140, that is, setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result can be implemented as follows, that is, setting the light transmittance of the in-vehicle glass to a default value when the second light intensity value is lower than or equal to the first predetermined light intensity threshold; and controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value. For example, if the light outside the vehicle is 2 lux, for example, which is lower than the set first predetermined light intensity threshold of 5 lux, for example, since the light outside the vehicle is too weak, which has little impact on the vehicle interior light, the light transmittance of the in-vehicle glass can be not specifically set, and the light emitted by the light-emitting element can be directly used to satisfy the requirement for the predetermined vehicle interior light. Here, setting the light transmittance of the in-vehicle glass to the default value means that no control is applied to the in-vehicle glass. For example, when the in-vehicle glass includes a dimming film, the dimming film is not energized. For example, when using polymer dispersed liquid crystal (PDLC) film, if the PDLC film is in a foggy state when not powered (i.e. forward PDLC) , its foggy state is maintained; if the light transmittance is high when not powered (i.e. reverse PDLC) , for example, in a state close to transparency, its state close to transparency is maintained. The reason why it can be set in this way is that in such an embodiment, the second light intensity value is lower than or equal to the first predetermined light intensity threshold, which means that the light outside the vehicle is relatively weak and already weak to a certain extent, at this time, the impact of the light outside the vehicle on the light inside the vehicle is almost negligible.
Alternatively, the above method step 140 may also have other implementations, for example, method step 140, that is, setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result includes:
adjusting the light transmittance of the in-vehicle glass based on the first light intensity value and the second light intensity value when the second light intensity value is higher than the first predetermined light intensity threshold; and
controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
For example, when the light outside the vehicle is 3000 lux, it is higher than the first light intensity threshold mentioned above, which is 5 lux, at this time, if the intensity requirement for the predetermined vehicle interior light is 6000 lux, for example, the light transmittance of the in-vehicle glass can be set to the highest light transmittance, such as 60%, which is then combined with the light emitted by the light-emitting element to satisfy the requirement for the predetermined vehicle interior light. At this time, it is necessary to control the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
In this way, when the second light intensity value is higher than the first predetermined light intensity threshold, that is, when the light intensity value of the light outside the vehicle is relatively large and cannot be ignored, firstly, the light transmittance of the in-vehicle glass is adjusted based on the first light intensity value and the second light intensity value, then, after adjusting the light transmittance, the brightness of the light emitted by the light-emitting element is controlled by comprehensively considering the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
Specifically, in the case where the light intensity value of the light outside the vehicle is relatively large and cannot be ignored, controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass includes:
when the first light intensity value is less than or equal to the product of the second light intensity value and the highest light transmittance of the in-vehicle glass, turning off the light-emitting element.
For example, when the light outside the vehicle is 8000 lux, it is higher than the first light intensity threshold mentioned above, that is 5 lux, at this time, if the intensity requirement for the predetermined vehicle interior light is 4500 lux, then the light intensity requirement of 4500 lux is less than the product (4800 lux) of the intensity value of the light outside the vehicle of 8000 lux and the highest light transmittance of 60%of the in-vehicle glass, thus, for example, it is possible to turn off the light-emitting element and use the way of adjusting the light transmittance of the in-vehicle glass to satisfy the requirement for the predetermined vehicle interior light. In this way, when the light outside the vehicle passing through the in-vehicle glass is already enough to achieve the predetermined vehicle interior light, for the purpose of energy conservation and environmental protection, the light-emitting element can be turned off at this time.
Alternatively, in the case where the intensity value of the light outside the vehicle is relatively large and cannot be ignored but cannot independently satisfy the requirement for the predetermined vehicle interior light, controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass includes:
In the case where the first light intensity value is greater than the product of the second light intensity value and the highest light transmittance of the in-vehicle glass, setting the light transmittance of the in-vehicle glass to the highest light transmittance and turning on the light-emitting element.
For example, when the light outside the vehicle is 8000 lux, it is higher than the first light intensity threshold mentioned above, which is 5 lux, at this time, if the intensity requirement for the predetermined vehicle interior light is 7000 lux, and this light intensity requirement of 7000 lux is greater than the product (4800 lux) of the intensity value of the light outside the vehicle of 8000 lux and the highest light transmittance of 60%, then the light-emitting element needs to be turned on to satisfy the requirement for the predetermined vehicle interior light. Correspondingly, to maximize the utilization of the light outside the vehicle, the light transmittance of the in-vehicle glass can be set to the highest light transmittance and the light-emitting element can be turned on. In this way, when the light outside the vehicle passing through the in-vehicle glass is not enough to achieve the predetermined vehicle interior light, it is possible to maximize the use of the light outside the vehicle, that is, the light transmittance of the in-vehicle glass is set to the highest light transmittance while the light-emitting element is turned on for reinforcement. Specifically, the light transmittance of the in-vehicle glass is set to the highest light transmittance, such as 60%, and the intensity of light transmitted from outside the vehicle into the vehicle is 4800 lux, meanwhile, the light-emitting element is turned on to enhance the vehicle interior light. That is, the light control method 100 can further include the following steps: determining the brightness of the light emitted by the light-emitting element according to the difference between the first light intensity value and the product of the second light intensity value and the highest light transmittance of the in-vehicle glass. For example, the brightness of the light emitted by the light-emitting element is determined according to the difference of 2200 lux between the first light intensity value of 7000 lux and the product (4800 lux) of the second light intensity value of 8000 lux and the highest light transmittance of 60%of the in-vehicle glass. It is well known to those skilled in the art that when the difference is larger, the voltage or current to be applied to the light-emitting element is larger to make it brighter.
The above embodiments consider the requirement for the predetermined vehicle interior light and the influence of the light outside the vehicle, however, there are actually many factors that affect the final light inside the vehicle, such as the diffuse reflection of various materials inside the vehicle, therefore, further consideration can be given to the actual light inside the vehicle. For example, a third signal associated with the actual light inside the vehicle can be obtained by an optical sensor disposed around the in-vehicle glass, the third signal includes a third light intensity value of the actual light inside the vehicle, and then the light transmittance of the in-vehicle glass can be adjusted based on the first light intensity value and the third light intensity value until the light transmittance of the in-vehicle glass is set to the lowest or highest light transmittance, or until the difference between the first light intensity value and the third light intensity value is 0; and the brightness of the light emitted by the light-emitting element is controlled based on the first and third light intensity values. Those skilled in the art can understand that when the in-vehicle glass includes a dimming film, if the light transmittance of the in-vehicle glass is the lowest when the dimming film is not energized, then the light transmittance of the in-vehicle glass is set to the lowest light transmittance, that is, by not energizing the dimming film.
For example, if the light transmittance is set to 50%according to the aforementioned light control method, the light intensity of the predetermined vehicle interior light is 5000 lux, while the light intensity of the actual measured light is 4200 lux, at this time, for example, further adjustment can be made by adjusting the light transmittance of the in-vehicle glass or the light emitted by the light-emitting element. Optionally, for example, first the light transmittance can be increased and the light intensity of the actual light inside the vehicle can be measured in real time, until the light intensity value of the actual light inside the vehicle reaches the light intensity value of the predetermined vehicle interior light. If it is reached, that is, the difference between the first and third light intensity values is 0, then controlling the brightness of the light emitted by the light-emitting element based on the first and third light intensity values includes maintaining the control of the light-emitting element, i.e. not energizing the light-emitting element, i.e. controlling the brightness of the light emitted by the light-emitting element to be 0. Of course, there is a possibility that even if the light transmittance of the in-vehicle glass is adjusted to the highest light transmittance (e.g. 60%) , the light intensity value of the actual light inside the vehicle cannot reach the light intensity value of the predetermined vehicle interior light. At this time, the light-emitting element can be used to compensate for this gap. In summary, when the light transmittance of the in-vehicle glass is set to the highest light transmittance and the third light intensity value is less than the first light intensity value, the brightness of the light emitted by the light-emitting element is determined based on the difference between the third light intensity value and the first light intensity value.
As another example, for example, when the light transmittance is set to 1%according to the aforementioned light control method, the light intensity of the predetermined vehicle interior light is 100 lux, while the light intensity of the actual measured light is 280 lux, at this time, for example, further adjustment can be made by adjusting the light transmittance of the in-vehicle glass. Optionally, for example, first the light transmittance can be lowered and the light intensity of the actual light inside the vehicle can be measured in real time until the light intensity value of the actual light inside the vehicle reaches the light intensity value of the predetermined vehicle interior light. As mentioned earlier, if it is reached, the control of the light-emitting element is maintained. Of course, there is a possibility at this time that the light outside the vehicle is so strong that the light intensity value of the actual light inside the vehicle cannot reach the light intensity value of the predetermined vehicle interior light, even if the light transmittance of the in-vehicle glass is adjusted to the lowest light transmittance. At this time, the lowest light transmittance is maintained while maintaining the control of the light-emitting element (i.e. the brightness of the light emitted by the light-emitting element is controlled to be 0) to achieve a light intensity value that is as close as possible to the predetermined vehicle interior light.
As yet another example, for example, when the light transmittance is set to the highest light transmittance (e.g. 60%) and the light-emitting element is turned on according to the aforementioned light control method, the light intensity of the predetermined vehicle interior light is 5000 lux, while the light intensity of the actual measured light is 6200 lux, at this time, for example, further adjustment can be made by adjusting the light transmittance of the in-vehicle glass or the light emitted by the light-emitting element. For example, to maximize the use of light outside the vehicle, the brightness of the light emitted by the light- emitting element can be first reduced and the light intensity of the actual light inside the vehicle can be measured in real time until the light intensity of the actual light inside the vehicle reaches the light intensity value of the predetermined vehicle interior light. If it is reached, that is, the difference between the first and third light intensity values is 0, then adjusting the light transmittance of the in-vehicle glass based on the first and third light intensity values includes maintaining the light transmittance of the in-vehicle glass at the highest light transmittance. Of course, there is also a possibility that even if the brightness of the light emitted by the light-emitting element is reduced to 0, the light intensity value of the actual light inside the vehicle is still greater than the light intensity value of the predetermined vehicle interior light. At this time, the light transmittance of the in-vehicle glass can be lowered until satisfying the requirement, which is not redundantly repeated herein.
In summary, in this way, more influencing factors can be considered, such as considering the actual light inside the vehicle, when the relevant parameters of the actual light inside the vehicle are received, the light transmittance of the in-vehicle glass can be set based on the actual light inside the vehicle and the predetermined vehicle interior light, and the brightness of the light emitted by the light-emitting element can be controlled based on the first and third light intensity values.
In addition, the user of a vehicle sometimes has a need for dynamic light intensity changes in the light-emitting elements inside the vehicle, for example, if the light-emitting elements inside the vehicle can move with the rhythm of music while playing music or when people inside the vehicle are singing, this will significantly enhance the user experience.
As shown in FIG. 2, the second aspect of the present disclosure proposes a light control method 200 for a vehicle, the vehicle includes a light-emitting element and an in-vehicle glass, the light control method 200 comprises at least the following four method steps: firstly, in method step 210, setting the light transmittance of the in-vehicle glass to a fixed value to fix and reduce the influence of the light outside the vehicle on the light inside the vehicle; then, in method step 220, obtaining a fourth signal associated with the sound inside the vehicle; next, in method step 230, performing signal processing on the fourth signal to obtain a control signal; and finally, in method step 240, controlling the brightness of the light emitted by the light-emitting element based on the control signal. As mentioned earlier, the setting of the light transmittance of the in-vehicle glass can be achieved in different ways, as long as the light from outside the vehicle penetrating into the interior of the vehicle can be controlled. For example, through an electronic sunshade, the light transmittance of the in-vehicle glass can be set by covering the area of the in-vehicle glass. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately. In summary, the in-vehicle glass includes a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film.
At this time, setting the light transmittance of the in-vehicle glass to a fixed value includes setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%. Preferably, for example, the light transmittance of the in-vehicle glass is set to the lowest light transmittance or a value between 0.5%and 5%. More preferably, the light transmittance of the in-vehicle glass is set to the lowest light transmittance or a value between 0.5%and 2%. In this way, to make the brightness of the light emitted by the light-emitting element change with the sound and make the user perceive it, it is necessary to minimize the impact of the light outside the vehicle on the vehicle interior lighting effect, therefore, it is necessary to set the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%to reduce the impact of the light outside the vehicle on the vehicle interior lighting effect. For example, in this application scenario, it is necessary to make the user of the vehicle feel that the luminous intensity of the light-emitting elements inside the vehicle changes with the sound, so it is also necessary to weaken the impact of the light outside the vehicle on vehicle interior light, therefore, it is necessary to set the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%to reduce the impact of the light outside the vehicle on vehicle interior light. At this point, the intensity of the light outside the vehicle will not be considered.
Preferably, it is possible to consider the intensity of the light outside the vehicle when setting the light transmittance of the in-vehicle glass, that is, setting the light transmittance of the in-vehicle glass to a fixed value includes: obtaining a second signal associated with the light outside the vehicle, the second signal including the second light intensity value of the light outside the vehicle; determining whether the second light intensity value is lower than or equal to the second predetermined light intensity threshold, and setting the light transmittance of the in-vehicle glass to the default value when the second light intensity value is lower than or equal to the second predetermined light intensity threshold; when the second light intensity value is higher than the second predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%. In this way, the intensity of the light outside the vehicle can be considered. Here, setting the light transmittance of the in-vehicle glass to the default value means that no control is applied to the in-vehicle glass. For example, when the in-vehicle glass includes a dimming film, the dimming film is not energized. For example, when using polymer dispersed liquid crystal (PDLC) film, if the PDLC film is in a foggy state when not powered (i.e. forward PDLC) , its foggy state is maintained; if the light transmittance is high when not powered (i.e. reverse PDLC) , for example, in a state close to transparency, its state close to transparency is maintained. The reason why it can be set in this way is that in such an embodiment, the second light intensity value is lower than or equal to the second predetermined light intensity threshold, which means that the light outside the vehicle is relatively weak and has already weakened to a certain extent, at this point, the impact of the light outside the vehicle on the light inside the vehicle is almost negligible. In the case where the second light intensity value is higher than the second predetermined light intensity threshold, that is, the light intensity value of the light outside the vehicle is relatively large and cannot be ignored, it is necessary to set the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%to reduce the impact of the light outside the vehicle on the vehicle interior lighting effect. For example, the second predetermined light intensity threshold can be set to 10 lux, if the light intensity of the light outside the vehicle is greater than 10 lux, the light transmittance of the in-vehicle glass can be set to the lowest light transmittance or a value between 0.5%and 10%to reduce the impact of light outside the vehicle.
In summary, in this way, after setting the light transmittance of the in-vehicle glass, based on the sound inside the vehicle, the brightness of the light emitted by the light-emitting element can be dynamically controlled as the sound changes , so that the brightness of the light emitted by the light-emitting element changes with the sound, more specifically, the brightness of the light emitted by the light-emitting element reflects the changes in the sound inside the vehicle, so that a better user experience can be achieved to allow the user to feel the changes in sound in the way of light and achieve dynamic combination perception of light and sound.
In order to obtain the control signal, it is necessary to first obtain the sound signal, at this time, there are at least two ways to obtain the fourth signal associated with the sound inside the vehicle, that is, obtaining the fourth signal associated with the sound inside the vehicle via the sound sensor; alternatively, obtaining the fourth signal associated with the audio played by the vehicle via the onboard bus. The first way, for example, is to obtain the fourth signal associated with the sound inside the vehicle by means of the sound sensor, at this time, for example, it is possible to obtain the music played by the vehicle or the music sung by the personnel inside the vehicle; the second way, for example, is to obtain it directly via the onboard bus, which means that when the vehicle plays music, it must transmit the data related to the music to the player via the onboard bus, thus, the fourth signal associated with the audio played by the vehicle can be obtained via the onboard bus. In this way, the fourth signal associated with the sound inside the vehicle can be obtained through the sound sensor in the way of signal acquisition, or the fourth signal associated with the audio played by the vehicle can be directly obtained through the onboard bus.
After obtaining the fourth signal associated with the audio played by the vehicle or obtaining the fourth signal associated with the sound inside the vehicle via the sound sensor, it is necessary to generate a control signal for controlling the light-emitting element, at this time, it is necessary to first sample the fourth signal to analyze its amplitude; then, a brightness component of the control signal is generated based on the amplitude. This can make the light-emitting element brighter when the sound inside the vehicle is higher, and conversely, the light-emitting element is darker when the sound inside the vehicle is lower. In this way, the technical effect of the brightness of the light emitted by the light-emitting element changing with the height fluctuation of the sound is achieved through sampling the fourth signal to analyze the amplitude of the fourth signal and then generating the brightness component of the control signal based on the amplitude.
In the embodiment of obtaining the fourth signal mentioned above through the sound sensor, since the obtained signal may be an analog signal that requires analog-to-digital conversion, obtaining the fourth signal associated with the sound inside the vehicle via the sound sensor includes: first obtaining the analog signal associated with the sound inside the vehicle via the sound sensor; then, the analog signal is converted into a digital signal via an analog-to-digital converter to generate the fourth signal.
Of course, the atmosphere inside the vehicle is also important for the user of the vehicle, and for the creation of the atmosphere inside the vehicle, the color temperature of the vehicle interior light is particularly important, therefore, the inventor of the present disclosure also proposed a light control method for adjusting the color temperature based on the above invention concept. FIG. 3 shows a flowchart of a light control method 300 according to yet another embodiment of the present disclosure. From FIG. 3, it can be seen that under the invention concept of dynamically adjusting the light transmittance of in-vehicle glass in conjunction with the achieved light effect in the present disclosure, in the light control method 300 for a vehicle proposed according to the third aspect of the present disclosure, the vehicle comprises a light-emitting element and an in-vehicle glass, the light control method 300 comprises at least four method steps, namely, first in method step 310, obtaining a first signal associated with the predetermined vehicle interior light, wherein the first signal includes a first color temperature value of the predetermined vehicle interior light, such as a selection associated with the predetermined vehicle interior light set by the driver or passenger is received through the vehicle-machine interface; then, in method step 320, obtaining a second signal associated with the light outside the vehicle, the second signal includes a second light intensity value and a second color temperature value of the light outside the vehicle, for example, obtaining through an optical sensor disposed outside the vehicle; next, in method step 330, comparing the second light intensity value with a third predetermined light intensity threshold to obtain a comparison result; and finally, in method step 340, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result. In this way, in the process of achieving the predetermined vehicle interior light, the influence of light outside the vehicle will be considered, and the predetermined vehicle interior light will be dynamically approached by setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element, in order to satisfy the use needs of the vehicle users as much as possible.
Here, the setting of the light transmittance of the in-vehicle glass can be achieved in different ways, as long as the light from outside the vehicle penetrating into the interior of the vehicle can be controlled. For example, through an electronic sunshade, the light transmittance of the in-vehicle glass can be set by covering the area of the in-vehicle glass. Preferably, the in-vehicle glass includes a dimming film, and the light transmittance of the in- vehicle glass is set by setting the light transmittance of the dimming film. When the in-vehicle glass has a dimming film, the light transmittance of the in-vehicle glass can be set more accurately.
When implementing the above-mentioned light control method 300, method step 340 sets the light transmittance of the in-vehicle glass and controls the color temperature value of the light emitted by the light-emitting element according to the comparison result, which can be achieved by the following steps: first setting the light transmittance of the in-vehicle glass to a default value when the second light intensity value is lower than or equal to the third predetermined light intensity threshold; and then controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
Here, setting the light transmittance of the in-vehicle glass to a default value means that no control is applied to the in-vehicle glass. For example, when the in-vehicle glass includes a dimming film, the dimming film is not energized. For example, when using polymer dispersed liquid crystal (PDLC) film, if the PDLC film is in a foggy state when not powered (i.e. forward PDLC) , its foggy state is maintained; if the light transmittance is high when not powered (i.e. reverse PDLC) , for example, in a state close to transparency, its state close to transparency is maintained. The reason why it can be set in this way is that in such an embodiment, the second light intensity value is lower than or equal to the third predetermined light intensity threshold, which means that the light outside the vehicle is relatively weak and has already weakened to a certain extent that the impact of the light outside the vehicle on the light inside the vehicle is almost negligible. At this time, in order to achieve the predetermined vehicle interior light, it is sufficient to control the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
For example, if the light outside the vehicle is 2 lux, for example, which is lower than the set third predetermined light intensity threshold of 10 lux, at this time, since the light outside the vehicle is too weak, which has little impact on the vehicle interior light, the light transmittance of the in-vehicle glass can be not specifically set, and the light emitted by the light-emitting element can be directly used to satisfy the requirement for the predetermined vehicle interior light.
When the light outside the vehicle is strong, which cannot be ignored, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result includes: determining the color temperature difference between the first color temperature value and the second color temperature value when the second light intensity value is higher than the third predetermined light intensity threshold; and setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference.
That is, when the second light intensity value is higher than the third predetermined light intensity threshold, i.e., when the light outside the vehicle cannot be ignored, it is necessary to consider the color temperature difference between the first color temperature value and the second color temperature value, and set the light transmittance of the in-vehicle glass and control the color temperature value of the light emitted by the light-emitting element according to the color temperature difference.
For example, if the light outside the vehicle is 1200 lux, for example, higher than the set third predetermined light intensity threshold of 10 lux, for example, it is necessary to consider the above color temperature difference to set the light transmittance of the in-vehicle glass. For example, the first color temperature value and the second color temperature value are 2200 K and 2600 K, respectively, which means that the color temperature difference is 400 K, at this time, the light transmittance of the in-vehicle glass can be set according to the color temperature difference. Specifically, if the color temperature threshold is set to 200 K, which means that the color temperature difference of 400 K is relatively large, making it difficult to achieve the predetermined vehicle interior light by adjusting the color temperature of the light emitted by the light-emitting element inside the vehicle, at this time, the influence of the light outside the vehicle should also be reduced, i.e., the light transmittance of the in-vehicle glass needs to be lowered. That is to say, if the color temperature difference is higher than the predetermined color temperature threshold, that is, the difference between the first color temperature value and the second color temperature value is large, if the light outside the vehicle is allowed to penetrate too much into the vehicle at this time, it is difficult to achieve the predetermined color temperature of the vehicle interior light, therefore, the light transmittance of the in-vehicle glass can be set to the lowest light transmittance to reduce the impact of the light outside the vehicle on the vehicle interior light. In specific implementation, the light transmittance of the in-vehicle glass can be set to the lowest light transmittance, such as 0.5%, at this time, the influence of the light outside the vehicle can be ignored, and the color temperature value of the light emitted by the light-emitting element can be controlled based on the first color temperature value to achieve or approach the predetermined vehicle interior light. In summary, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference includes: setting the light transmittance of the in-vehicle glass to the lowest light transmittance when the color temperature difference is higher than a predetermined color temperature threshold; and controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
When the color temperature difference is small, such as only 100 K, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference includes: when the color temperature difference is lower than or equal to the predetermined color temperature threshold, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value, the second light intensity value, and the second color temperature value. In this case, namely, if the color temperature difference is lower than or equal to the predetermined color temperature threshold, that is, the difference between the first color temperature value and the second color temperature value is not significant, more the light outside the vehicle can be used to achieve the effect of vehicle interior light, and the color temperature value of the light emitted by the light-emitting element can be controlled to achieve this. In specific control, the light transmittance of the in-vehicle glass can be set and the color temperature value of the light emitted by the light-emitting element can be controlled based on the first color temperature value, the second light intensity value, and the second color temperature value.
For example, if the first color temperature value and the second color temperature value are 2350 K and 2450 K, respectively, which means that the color temperature difference is 100 K, at this time, the light transmittance of the in-vehicle glass can be set according to the color temperature difference. Specifically, if the color temperature threshold is set to 200K, which means that the color temperature difference of 100 K is relatively small, making it easier to achieve the predetermined vehicle interior light by adjusting the color temperature of the light emitted by the light-emitting element in the vehicle, at this time, the existing light transmittance of the in-vehicle glass can be slightly reduced, and the predetermined vehicle interior light can be achieved or approached by adjusting the color temperature of the light emitted by the light-emitting element. For example, the color temperature mixing requirement of the vehicle interior light can be considered, so that the first color temperature value of the predetermined vehicle interior light is between the second color temperature value of the light outside the vehicle and the color temperature value of the light-emitting element, so as to achieve or basically achieve the color temperature value of the vehicle interior light formed by the final mixing.
The above embodiments consider the requirement for the predetermined vehicle interior light and the influence of the light outside the vehicle, but there are actually many factors that affect the final vehicle interior light, such as diffuse reflection of various materials inside the vehicle, so it is preferable to also consider the actual light inside the vehicle. For example, a third signal associated with the actual light inside the vehicle can be obtained by an optical sensor disposed around the in-vehicle glass, the third signal includes a third color temperature value of the actual light inside the vehicle, and then the color temperature value of the light emitted by the light-emitting element can be controlled based on the first color temperature value and the third color temperature value. In summary, the light control method 300 shown in FIG. 3 can further include obtaining a third signal associated with the actual light inside the vehicle, wherein the third signal includes a third color temperature value of the actual light inside the vehicle; and controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value and the third color temperature value. For example, if the first color temperature value and the third color temperature value are 2400 K and 2550 K respectively at this time, the color temperature value of the light-emitting element can be reduced and the color temperature value of the actual light inside the vehicle can be measured in real time, so that the final color temperature value of the vehicle interior light can be achieved or basically achieved. As another embodiment, if the first color temperature value and the third color temperature value are 2400 K and 2250 K respectively at this time, the color temperature value of the light-emitting element can be increased and the color temperature value of the actual light inside the vehicle can be measured in real time, so as to achieve or basically achieve the final color temperature value of the vehicle interior light. In this way, more influencing factors can be considered, such as considering the actual light inside the vehicle, when the relevant parameters of the actual light inside the vehicle are obtained, the color temperature value of the light emitted by the light-emitting element is controlled based on the first color temperature value and the third color temperature value.
The light control method 100 shown in FIG. 1, the light control method 200 shown in FIG. 2, and the light control method 300 shown in FIG. 3 can be implemented separately or in combination to achieve multiple purposes.
The above technical solution can be implemented not only through software and other control methods, but also through corresponding hardware circuits, for example. In other words, the above presentation control method can be achieved by combining the software stored in a computer-readable storage medium with corresponding hardware components. The computer readable storage medium is loaded with computer readable program instructions for executing various embodiments of the present disclosure. The computer-readable storage medium can be a tangible device that can hold and store instructions used by an instruction executing device. The computer-readable storage media, for example, may be but not limited to an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples of computer-readable storage media (non-exhaustive) include: portable computer disk, hard disk, Random-access memory (RAM) , read-only memory (ROM) , erasable programmable read-only memory (EPROM or flash memory) , Static random-access memory (SRAM) , portable compressed disk read-only memory (CD-ROM) , digital multi-function disk (DVD) , memory stick, floppy disk, mechanical coding equipment, for example, a Punched card or a convex structure in a groove on which instructions are stored, and any suitable combination of the above. The computer-readable storage medium used here is not interpreted as an instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagated through waveguides or other transmission media (such as optical pulses transmitted through fiber optic cables) , or electrical signals transmitted through wires.
FIG. 4 shows a schematic diagram of a light control system 400 according to an embodiment of the present disclosure. From Fig. 4, it can be seen that the light control system 400 includes a processor (such as a central processing unit (CPU) ) 410 and a memory 420 coupled to the processor 410. The memory 420 is configured to store computer executable instructions, causing the processor 410 to execute the light control methods 100 in the above embodiments when the computer executable instructions are executed. The processor 410 and the memory 420 are connected to each other through a bus, and input/output (I/O) interfaces are also connected to the bus.
In addition, the light control system 400 can also include a plurality of components connected to the I/O interface (not shown in Fig. 4) , including but not limited to: input units, such as keyboards, a mouse, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as magnetic disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the light control system 400 to exchange information/data with other devices through computer networks such as the Internet and/or various telecommunications networks.
At this time, the computer executable instructions stored in memory 420 cause the processor 410 to execute the light control method according to any of the embodiments of Fig. 1-3 of the present disclosure when executed.
In addition to the above-mentioned realization form of light control system 400 shown as processor and memory, as a supplier of whole glass, it may also, for example, provide light control systems and their components including light-emitting elements and dimming films. FIG. 5 illustrates a schematic diagram of a light control system 500 according to another embodiment of the present disclosure. From FIG. 5, it can be seen that in addition to the processor 510 and memory 520, the light control system 500 shown in FIG. 5 can also include an in-vehicle glass 530 and a light-emitting element 540. As a preferred embodiment, the in-vehicle glass 530 can, for example, be integrated with a dimming film. Those skilled in the art should understand that the light-emitting element 540 can also be integrated into the in-vehicle glass 530 like a dimming film.
As shown in FIG. 5, a fourth aspect of the present disclosure proposes a light control system 500 for a vehicle, comprising a processor 510 and a memory 520, wherein the memory 520 stores executable instructions that, when executed, cause the processor 510 to execute any of the light control methods 100, 200, or 300 shown in FIGS. 1 to 3 of the present disclosure. In addition, the light control system 500 also includes an in-vehicle glass 530 with a dimming film. Among them, the dimming film includes a polymer dispersed liquid crystal (PDLC) film or an electrochromic film (EC film) . Here, the adjustment range for the light transmittance of in-vehicle glass with a dimming film is, for example, 0.5%to 60%. Of course, the dimming film is not limited to the two types listed. For example, the dimming film can also include common types such as SPD (suspended particle device) and LC (liquid crystal) . In addition, the light control system 500 can also include, for example, a light-emitting element 540. Here, the light-emitting element 540 includes, but is not limited to, various forms of vehicle interior lights such as a ceiling light, a reading light, a door light, an instrument light, an ambient light, etc., whose luminous principle can be based on, for example, the halogen lamp luminous principle, LED lamp luminous principle, or laser lamp luminous principle.
The present disclosure also provides a computer program product that is tangibly stored on a computer readable storage medium and includes computer executable instructions that, when executed, cause at least one processor to perform a method of various embodiments of the present disclosure.
Generally speaking, the various example embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, firmware, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. When various aspects of the embodiments of the present disclosure are illustrated or described as block diagrams, flowcharts, or using some other graphical representation, it will be appreciated that the blocks, apparatuses, systems, techniques, or methods described herein can be regarded as non-limited examples are implemented in hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.
Fig. 6 shows a schematic diagram of a light control system 600 according to yet another embodiment of the present disclosure. It should be appreciated that the light control system 600 may be implemented to implement the functions of anyone of the light control methods 100, 200 or 300 in Figs. 1-3. It can be seen from Fig. 6 that the light control system 600 includes a central processing unit (CPU) 601 (for example, a processor) , which can perform various appropriate actions and processes according to the computer program instructions stored in a read-only memory (ROM) 602 or the computer program instructions loaded from the storage unit 608 to a random access memory (RAM) 603. In the RAM 603, various programs and data required for the operation of the light control system 600 can also be stored. The CPU 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to the bus 604.
A number of components in the light control system 600 are connected to the I/O interface 605, including: an input unit 606, such as a keyboard, a mouse, etc.; an output unit 607, such as various types of displays, speakers, etc.; and a storage unit 608, such as a magnetic disk, an optical disk, etc.; and a communication unit 609, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 609 allows the light control system 600 to exchange information/data with other apparatuses through a computer network such as the Internet and/or various telecommunication networks.
The various methods described above, for example, the light control method can be executed by the processing unit 601. For example, in some embodiments, the light control method 100 may be implemented as a computer software program, which is tangibly included in a machine-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program may be loaded and/or installed on the light control system 600 via the ROM 602 and/or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the CPU 601, one or more actions or steps of the method 100 described above can be executed, i.e.:
obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first light intensity value of the predetermined vehicle interior light;
obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle;
comparing the second light intensity value with a first predetermined light intensity threshold to obtain a comparison result;
setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result.
Further, when the computer program is loaded into the RAM 603 and executed by the CPU 601, one or more actions or steps of the method 200 described above can be executed, i.e.:
setting the light transmittance of the in-vehicle glass to a fixed value;
obtaining a fourth signal associated with the sound inside the vehicle;
performing signal processing on the fourth signal to obtain a control signal; and
controlling the brightness of the light emitted by the light-emitting element based on the control signal.
Furthermore, when the computer program is loaded into the RAM 603 and executed by the CPU 601, one or more actions or steps of the method 300 described above can be executed, i.e.:
obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first color temperature value of the predetermined vehicle interior light;
obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value and a second color temperature value of the light outside the vehicle;
comparing the second light intensity value with a third predetermined light intensity threshold to obtain a comparison result;
setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result.
Of course, the light control system 600 in Figure 6 can also implement the technical solution in the implementation variant improved according to any of Figure 1 and Figure 2 and Figure 3.
In summary, in the technical solution according to the present disclosure, the light control method and light control system of the present disclosure combine the light transmittance of the in-vehicle glass with the light effect achieved to dynamically adjust so as to dynamically optimize the light effect inside the vehicle in combination with the light environment in which the vehicle is located.
Although it is described above that the various example embodiments of the present disclosure can be implemented in hardware or a dedicated circuit, the above-mentioned light control system can be implemented in the form of hardware or software, because: in the 1990s, a technological improvement can easily belong to the improvement of the hardware (for example, the improvement of the circuit structure of diodes, transistors, switches, etc. ) or the improvement of software (for example, the improvement of method flow) . However, with the continuous development of technology, the improvement of many method processes nowadays can almost be implemented by programming the improved method process into the hardware circuit, in other words, the corresponding hardware circuit structure can be obtained by programming different programs of the hardware circuit, the change of the hardware circuit structure is implemented, that is, the improvement of such a method flow can also be regarded as a direct improvement of the hardware circuit structure. Therefore, it cannot be considered that the improvement of a method flow cannot be implemented by hardware entity modules. For example, a programmable logic device (PLD) (such as a Field Programmable Gate Array (FPGA) ) is an integrated circuit whose logic function is determined by the user's programming of the device. It is programmed by the designer to "integrate" a digital system on a programmable logic device without requiring the chip manufacturer to design and manufacture a dedicated integrated circuit chip. Moreover, instead of manually making integrated circuit chips, this kind of programming is mostly implemented using "logic compiler" software, which is similar to the software compiler used in program development and writing, but the original code must also be written in a specific programming language before compiling, which is called Hardware Description Language (HDL) , and HDL is not only one language, but there are many languages, such as ABEL (Advanced Boolean Expression Language) , AHDL (Altera Hardware Description Language) , Confluence, CUPL (Cornell University Programming Language) , HDCal, JHDL (Java Hardware Description Language) , Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language) , etc., currently the most commonly used is VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog. It should also be clear to those skilled in the art that the method flow needs to be logic programmed using the above- mentioned hardware description languages into an integrated circuit, which can easily obtain the hardware circuit that implements the logic method flow.
The computer readable program instructions or computer program products used to execute various aspects of the disclosure of the present disclosure can also be stored in the cloud. When needed, the user can access the computer-readable program instructions used to execute one aspect of the disclosure of the present disclosure through the mobile Internet, the fixed network or other networks, so as to implement the technical solutions disclosed in each aspect of the disclosure of the present disclosure.
The foregoing descriptions are only alternative embodiments of the disclosure of the present disclosure, and are not used to limit the embodiments of the present disclosure, for those skilled in the art, the embodiments of the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the embodiment of the present disclosure should be included in the protection scope of the embodiment of the present disclosure.
Although the embodiments of the present disclosure have been described with reference to several specific embodiments, it should be understood that the embodiments of the present disclosure are not limited to the disclosed specific embodiments. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims. The scope of the claims accords with the broadest interpretation, so as to include all such modifications and equivalent structures and functions.

Claims

A light control method for a vehicle, wherein the vehicle comprises a light-emitting element and an in-vehicle glass, and the light control method comprises:

obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first light intensity value of the predetermined vehicle interior light;

obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle;

comparing the second light intensity value with a first predetermined light intensity threshold to obtain a comparison result;

setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result.
The light control method according to claim 1, wherein the in-vehicle glass includes a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film.
The light control method according to claim 1 or 2, wherein setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result comprises:

when the second light intensity value is lower than or equal to the first predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value; and

controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value.
The light control method according to claim 1 or 2, wherein setting the light transmittance of the in-vehicle glass and controlling the brightness of the light emitted by the light-emitting element according to the comparison result comprises:

when the second light intensity value is higher than the first predetermined light intensity threshold, adjusting the light transmittance of the in-vehicle glass based on the first light intensity value and the second light intensity value; and

controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass.
The light control method according to claim 4, wherein controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass comprises:

turning off the light-emitting element when the first light intensity value is less than or equal to the product of the second light intensity value and the highest light transmittance of the in-vehicle glass.
The light control method according to claim 4, wherein controlling the brightness of the light emitted by the light-emitting element based on the first light intensity value, the second light intensity value, and the light transmittance of the in-vehicle glass comprises:

setting the light transmittance of the in-vehicle glass to the highest light transmittance and turning on the light-emitting element when the first light intensity value is greater than the product of the second light intensity value and the highest light transmittance of the in-vehicle glass.
The light control method according to claim 6, wherein the light control method further comprises:

determining the brightness of the light emitted by the light-emitting element according to the difference between the first light intensity value and the product of the second light intensity value and the highest light transmittance of the in-vehicle glass.
The light control method according to claim 4, wherein the light control method further comprises:

obtaining a third signal associated with the actual light inside the vehicle, wherein the third signal includes a third light intensity value of the actual light inside the vehicle;

adjusting the light transmittance of the in-vehicle glass based on the first and third light intensity values until the light transmittance of the in-vehicle glass is set to the lowest or highest light transmittance, or until the difference between the first and third light intensity values is 0; and

controlling the brightness of the light emitted by the light-emitting element based on the first and third light intensity values.
The light control method according to claim 8, wherein the light control method further comprises:

determining the brightness of the light emitted by the light-emitting element based on the difference between the third light intensity value and the first light intensity value when the light transmittance of the in-vehicle glass is set to the highest light transmittance and the third light intensity value is less than the first light intensity value.
A light control method for a vehicle, wherein the vehicle comprises a light-emitting element and an in-vehicle glass, and the light control method comprises:

setting the light transmittance of the in-vehicle glass to a fixed value;

obtaining a fourth signal associated with sound inside the vehicle;

performing signal processing on the fourth signal to obtain a control signal; and

controlling the brightness of the light emitted by the light-emitting element based on the control signal.
The light control method according to claim 10, wherein the in-vehicle glass comprises a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film.
The light control method according to claim 10 or 11, wherein setting the light transmittance of the in-vehicle glass to a fixed value comprises:

setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%.
The light control method according to claim 10 or 11, wherein setting the light transmittance of the in-vehicle glass to a fixed value comprises:

obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value of the light outside the vehicle;

determining whether the second light intensity value is lower than or equal to a second predetermined light intensity threshold, and

when the second light intensity value is lower than or equal to the second predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value;

when the second light intensity value is higher than the second predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to the lowest light transmittance or a value between 0.5%and 10%.
The light control method according to claim 10 or 11, wherein obtaining a fourth signal associated with sound inside the vehicle comprises:

obtaining the fourth signal associated with the sound inside the vehicle via a sound sensor; or

obtaining the fourth signal associated with audio played by the vehicle via an onboard bus.
The light control method according to claim 14, wherein performing signal processing on the fourth signal to obtain a control signal comprises:

sampling the fourth signal to analyze the amplitude of the fourth signal; and

generating a brightness component of the control signal based on the amplitude.
The light control method according to claim 14, wherein obtaining the fourth signal associated with the sound inside the vehicle via a sound sensor comprises:

obtaining an analog signal associated with the sound inside the vehicle via a sound sensor;

converting the analog signal into a digital signal via an analog-to-digital converter to generate the fourth signal.
A light control method for a vehicle, wherein the vehicle comprises a light-emitting element and an in-vehicle glass, and the light control method comprises:

obtaining a first signal associated with a predetermined vehicle interior light, wherein the first signal includes a first color temperature value of the predetermined vehicle interior light;

obtaining a second signal associated with light outside the vehicle, wherein the second signal includes a second light intensity value and a second color temperature value of the light outside the vehicle;

comparing the second light intensity value with a third predetermined light intensity threshold to obtain a comparison result;

setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result.
The light control method according to claim 17, wherein the in-vehicle glass comprises a dimming film, and the light transmittance of the in-vehicle glass is set by setting the light transmittance of the dimming film.
The light control method according to claim 17 or 18, wherein setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result comprises:

when the second light intensity value is lower than or equal to the third predetermined light intensity threshold, setting the light transmittance of the in-vehicle glass to a default value; and

controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
The light control method according to claim 17 or 18, wherein setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the comparison result comprises:

determining the color temperature difference between the first color temperature value and the second color temperature value when the second light intensity value is higher than the third predetermined light intensity threshold; and

setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference.
The light control method according to claim 20, wherein setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference comprises:

when the color temperature difference is higher than a predetermined color temperature threshold, setting the light transmittance of the in-vehicle glass to the lowest light transmittance; and

controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value.
The light control method according to claim 20, wherein setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element according to the color temperature difference comprises:

when the color temperature difference is lower than or equal to a predetermined color temperature threshold, setting the light transmittance of the in-vehicle glass and controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value, the second light intensity value, and the second color temperature value.
The light control method according to claim 20, wherein the light control method further comprises:

obtaining a third signal associated with actual light inside the vehicle, wherein the third signal includes a third color temperature value of the actual light inside the vehicle; and

controlling the color temperature value of the light emitted by the light-emitting element based on the first color temperature value and the third color temperature value.
A light control system for a vehicle, wherein the light control system comprises a processor and a memory storing executable instructions, which when executed cause the processor to execute the light control method according to any of claims 1-23.
The light control system according to claim 24, wherein the light control system further comprises an in-vehicle glass with a dimming film.
The light control system according to claim 25, wherein the dimming film comprises a PDLC film or an electrochromic film (EC film) .
The light control system according to claim 25, wherein the light control system further comprises a light-emitting element.
A vehicle, wherein the vehicle comprises the light control system according to any of claims 24 to 27.
A computer readable storage medium with computer executable instructions stored thereon for executing the light control method according to any of claims 1-23.
A computer program product that is tangibly stored on a computer-readable storage medium and includes computer-executable instructions that, when executed, cause at least one processor to execute the light control method according to any of claims 1-23.