KR102127158B1 - System and method for controlling brightness of vehicle glass - Google Patents

Abstract

The present invention relates to a contrast control system and method for a vehicle glass.
In addition, the present invention is provided in each of a plurality of vehicle glass mounted on the vehicle, and an illumination detection unit that is installed at a plurality of locations of the vehicle to detect the illumination of the installation location and output a voltage value corresponding to the detected illumination. Determine the at least one vehicle glass having a relatively high intensity of light applied from the outside by comparing voltage values of a plurality of locations output from the contrast control unit and the brightness sensor that change in contrast depending on the external applied voltage. And it has a control unit for controlling the contrast control so that the contrast of the vehicle glass is dark, it is possible to adjust the contrast of the vehicle glass located in a direction with a strong light intensity and light intensity outside the vehicle.

Description

System and method for controlling brightness of vehicle glass

The present invention relates to a contrast control system and method for a vehicle glass.

In general, for the purpose of preventing glare of the driver and facilitating visibility when driving a vehicle, tinting is performed to install a film that reduces the transmittance of sunlight on the glass of the vehicle. In addition, the driver may wear sunglasses or use a sun visor or sunscreen to prevent glare.

However, since tinting installed on the glass of a vehicle does not control the contrast of the pre-installed film, when changing the contrast, it is inconvenient to remove the pre-installed film and reinstall the new film. Due to this, there is a problem of cost consumption.

In addition, the conventional tinting has a problem of increasing the risk of accidents by limiting the driver's visual field during night driving and deteriorating the cognitive ability when the contrast of the pre-installed film is too high.

In addition, when using a sun visor or a sunscreen, the area where sunlight is blocked is limited and completely blocked up to the driver's field of view. In the case of using sunglasses provided separately by the driver, unnecessary drivers such as wearing or removing sunglasses while driving are unnecessary. There are problems that cause behavior.

The present invention has been devised in view of the above problems, and an object thereof is to provide a contrast control system and method for a vehicle glass that facilitates securing a field of view by preventing glare from a driver.

In addition, an object of the present invention is to provide a vehicle glass contrast control system and method for automatically adjusting the contrast of a vehicle glass according to a degree of light outside the vehicle.

The objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The present invention for achieving the above object is installed in each of a plurality of positions of the vehicle to detect the illuminance of the installation position, and an illuminance detector for outputting a voltage value corresponding to the sensed illuminance; It is provided on each of a plurality of vehicle glass mounted on the vehicle to determine the contrast, contrast control unit that changes the contrast in accordance with the external applied voltage; And comparing the voltage values of the plurality of positions output from the illuminance sensor to determine at least one vehicle glass having a relatively high intensity of light applied from the outside, and controlling the contrast controller to darken the contrast of the vehicle glass. It provides a contrast control system for a vehicle glass, including a control unit.

In a preferred embodiment, the GPS unit for receiving GPS information including the current latitude, longitude, time and date information; further comprising, the control unit, the illumination detection based on the GPS information received from the GPS unit Decide whether to operate negative.

In a preferred embodiment, the illuminance sensor includes a plurality of illuminance sensors matched to at least one vehicle glass according to the installation position, and the controller sequentially sorts voltage values output from the plurality of illuminance sensors The illuminance sensor having a voltage value of priority is selected, and it is determined that the intensity of light applied from the outside is higher in the vehicle glass matched with the selected illuminance sensor than other vehicle glasses.

In a preferred embodiment, the contrast adjustment unit is provided with an electrochromic film and attached to a plurality of vehicle glasses, and the control unit refers to a contrast adjustment table in which contrast values according to voltage values of the illuminance sensor are previously defined. , Control the contrast of the electrochromic film attached to the determined vehicle glass.

In addition, the present invention is a contrast control method performed in a contrast control system of a vehicle glass, comprising: (1) detecting an illuminance of a plurality of positions of a vehicle and outputting a voltage value corresponding to the sensed illuminance; (2) the control unit, comparing the voltage values of the plurality of positions output from the illuminance detecting unit to determine at least one vehicle glass having a relatively high intensity of light applied from the outside; And (3) controlling the contrast control unit installed in the vehicle glass so that the determined contrast of the vehicle glass is darkened by the control unit.

In a preferred embodiment, before the first step (1), (A) the control unit, the operation of the illuminance detection unit based on the current GPS, latitude, longitude, time and date information received from the GPS unit And determining whether or not.

In a preferred embodiment, the illuminance detection unit includes a plurality of illuminance sensors matched to at least one vehicle glass according to the installation position, and in step (2), the control unit outputs from the plurality of illuminance sensors The voltage values are sequentially sorted to select an illuminance sensor having a priority voltage value, and it is determined that the intensity of light applied from the outside is higher in the vehicle glass matched with the selected illuminance sensor than other vehicle glasses.

In a preferred embodiment, the contrast adjustment unit is provided with an electrochromic film and attached to a plurality of vehicle glasses, and in step (3), the control unit defines a contrast value according to the voltage value of the illuminance sensor in advance. The contrast of the electrochromic film attached to the determined vehicle glass is controlled by referring to the contrast control table.

According to the above-described problem solving means, the present invention is installed at a plurality of positions of a vehicle, and the illumination sensor detects the illuminance of the installation position and outputs a voltage value corresponding to the detected illuminance, and a plurality of vehicle glasses mounted on the vehicle At least one light intensity applied from the outside is relatively high by comparing the voltage values of a plurality of locations output from the contrast control unit and the illuminance detection unit, which are respectively provided to determine the contrast but change the contrast according to an externally applied voltage. Since it has a control unit for determining the vehicle glass and controlling the contrast control unit so that the contrast of the vehicle glass becomes dark, there is an effect of adjusting the contrast of the vehicle glass located in a direction in which the intensity of light and the intensity of light outside the vehicle is strong.

For this reason, the present invention automatically adjusts the contrast of the vehicle glass even if the driver does not operate separately, thereby preventing glare from the driver, thereby facilitating visibility, and there is no fear of limiting the driver's view during night driving.

1 is a view for explaining the contrast control system of a vehicle glass according to an embodiment of the present invention.
Figure 2 is a view for explaining the installation position of the illumination sensor in the contrast control system of the vehicle glass.
Figure 3 is a view for explaining the contrast control method of the vehicle glass according to an embodiment of the present invention.

In the following description, certain details of the present invention are shown to provide an overall understanding of the present invention, and it is common knowledge in the art that the present invention can be easily implemented without these specific details and by their modifications. It will be obvious to those who have

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 3, but will be described with reference to parts necessary for understanding the operation and operation according to the present invention.

1 is a view for explaining the contrast control system of the vehicle glass according to an embodiment of the present invention, Figure 2 is a view for explaining the installation position of the illumination sensor in the contrast control system of the vehicle glass.

1 and 2, the contrast control system of the vehicle glass according to an embodiment of the present invention includes an illuminance detecting unit 110, a contrast adjusting unit 120, a GPS unit 130, and a control unit 140 It is configured by.

The illuminance detecting unit 110 is for detecting illuminance, and is installed at a plurality of locations in a vehicle to detect illuminance at the installation location and output a voltage value corresponding to the sensed illuminance.

The illuminance sensor 110 may be provided with a plurality of illuminance sensors, and each illuminance sensor may be provided to match at least one vehicle glass according to its installation position.

For example, as illustrated in FIG. 2, the illuminance sensors constituting the illuminance detection unit 110 may be installed at points where the vehicle glass and the roof contact each other, and the three illuminance sensors 1, 2, and 3 may be installed on the vehicle windshield. ) Is installed, two illuminance sensors (4, 5) are installed on the right glass of the vehicle, three illuminance sensors (6, 7, 8) are installed on the rear glass of the vehicle, and two illuminance sensors are installed on the left glass of the vehicle. (9, 10) can be installed.

The illuminance sensor 110 may be installed outside the vehicle or may be installed to sense light entering the vehicle from inside the vehicle. In addition, the number of illuminance sensors may be increased or decreased depending on the size of the vehicle, the number of vehicle glasses, and the performance of the illuminance sensor to be installed.

Meanwhile, the illuminance detection unit 110 may be provided to be turned on/off by the control unit 140 to be described later.

The contrast adjustment unit 120 is provided on a vehicle glass, and is provided on each of a plurality of vehicle glasses mounted on a vehicle to perform a function of determining contrast.

For example, the contrast control unit 120 may be provided with an electrochromic film whose contrast changes according to an externally applied voltage, and may be installed by attaching each electrochromic film to a plurality of vehicle glasses.

In addition, the contrast control unit 120 may be provided to receive a predetermined applied voltage from a control unit 140, which will be described later, or to receive a predetermined applied voltage from a separately provided power supply controlled by the control unit 140. .

The GPS unit 130 receives GPS information, and performs a function of receiving GPS information including current latitude, longitude, time, and date information from a GPS satellite.

At this time, the GPS information received from the GPS unit 130 may be used as information for determining whether the illuminance detection unit 110 operates.

The control unit 140 controls the overall device, and in particular, compares voltage values of multiple locations output from the illuminance detection unit 110 to determine at least one vehicle glass having a relatively high intensity of light applied from the outside. And, it performs a function of controlling the contrast control unit 120 so that the determined contrast of the vehicle glass becomes dark.

In addition, the control unit 140 calculates and stores the sunrise time and sunset time based on the GPS information received from the GPS unit 130, or updates the previously stored sunrise time and sunset time, and the current time passes the sunrise time. It may be provided to operate the illuminance sensing unit 110 only when the sunset time is before.

That is, since the control unit 140 controls the contrast control unit 120 by operating the illuminance detection unit 110 only when it is checked during the daytime, the contrast of the vehicle glass is not darkened at night, so the driver's field of view may be restricted. There is no worry.

On the other hand, after operating the illuminance detector 110 based on the GPS information, the controller 140 uses the voltage values output from the illuminance detector 110 to increase the intensity of light applied from the outside. Can be judged.

For example, the controller 140 sequentially sorts voltage values output from the plurality of illuminance sensors to select at least one illuminance sensor having a priority voltage value, and the vehicle glass matched with the selected illuminance sensor is different from the vehicle. It can be determined that the intensity of light applied from the outside is higher than that of the glasses.

Preferably, the control unit 140 may be provided to determine at least two vehicle glasses to which strong light is applied compared to other vehicle glasses among the plurality of vehicle glasses, and when a plurality of illuminance sensors are installed in one vehicle glass The voltage value of the highest priority may be set as a representative value and reflected in the determination of the vehicle glass according to the representative value.

In addition, when the determination of at least two vehicle glasses is completed, the control unit 140 may darken the contrast of the vehicle glasses by controlling the contrast of the electrochromic film attached to the determined vehicle glass.

At this time, the control unit 140 may control the contrast of the electrochromic film by referring to a contrast control table in which the contrast value according to the voltage value of the illuminance sensor is previously defined, as shown in [Table 1] below.

Voltage value (V)
Electrochromic film contrast (%) front and back Right/Left side 1 or less 70% 40% 1 to 2 75% 50% 2 to 3 80% 60% 3 to 4 85% 70% 4 to 5 90% 80%

For example, when the voltage value of 1 V or less is output from the illuminance sensor corresponding to the vehicle windshield, the control unit 140 may control the applied voltage so that the electrochromic film attached to the vehicle windshield has a contrast value of 70%. .

Such, the contrast control system of the vehicle glass according to an embodiment of the present invention adjusts the contrast of the vehicle glass only during the daytime, and gradually controls the contrast of the vehicle glass according to the brightness of the exterior of the vehicle. Rather than controlling the contrast of the glass, it is possible to determine the direction in which the intensity of light applied to the vehicle is strong and adjust the contrast of the vehicle glasses located in the direction.

For this reason, the present invention can prevent the glare of the driver even if the driver does not separately operate, thereby facilitating securing of the field of view.

3 is a view for explaining the contrast control method of the vehicle glass according to an embodiment of the present invention.

Referring to FIG. 3, a method for adjusting the contrast of a vehicle glass performed in a system for adjusting the contrast of a vehicle glass according to an embodiment of the present invention will be described.

However, since the functions performed in the contrast control method of the vehicle glass shown in FIG. 3 are all performed in the contrast control system of the vehicle glass described with reference to FIGS. 1 and 2, FIG. 1 and FIG. All functions described with reference to the present invention are performed in a method for adjusting contrast of a vehicle glass according to a preferred embodiment of the present invention, and all functions described with reference to FIG. 3 are maintained in a contrast control system of a vehicle glass according to a preferred embodiment of the present invention. It should be noted that it is performed.

First, the controller determines whether the illuminance detector operates based on the current GPS, latitude, longitude, time, and date information received from the GPS unit (S110).

At this time, the controller may be provided to calculate the sunrise time and sunset time using the GPS information, and to operate the illuminance detection unit only when the current time passes the sunrise time and is before the sunset time.

Next, the illuminance detecting unit senses the illuminance of a plurality of positions of the vehicle and outputs a voltage value corresponding to the sensed illuminance to the controller (S120).

At this time, the illuminance sensor may be provided with a plurality of illuminance sensors that match at least one vehicle glass according to its installation position, and may be installed at a point where the vehicle glass and the roof contact.

Next, the control unit compares the voltage values of the plurality of positions output from the illumination sensor to determine at least one vehicle glass having a relatively high intensity of light applied from the outside (S130).

At this time, the control unit sequentially sorts the voltage values output from the aforementioned plurality of illuminance sensors to select an illuminance sensor having a priority voltage value, and the vehicle glass matched with the selected illuminance sensor is compared to other vehicle glasses. It can be determined that the intensity of light applied from the outside is high.

Preferably, the control unit may be provided to determine at least two vehicle glasses to which relatively strong light is applied among the plurality of vehicle glasses.

Next, the control unit controls the contrast control unit installed on the vehicle glass so that the contrast of the vehicle glasses is darkened (S140).

In this case, the above-described contrast control unit is provided with an electrochromic film and is attached to a plurality of vehicle glasses, and the contrast is adjusted according to an applied voltage input from a control unit or a separately provided power supply controlled by the control unit. It is equipped to change.

In addition, the controller may control the contrast of the electrochromic film attached to each vehicle glass by referring to a contrast control table in which the contrast value of the electrochromic film according to the voltage value of the illuminance sensor is previously defined.

On the other hand, when the above-described 140th step is completed, the 120th to 140th steps may be repeated again until the vehicle is turned off.

The preferred embodiments of the present invention have been exemplarily described above, but the scope of the present invention is not limited to these specific embodiments, and can be appropriately changed within the scope described in the claims.

110: illuminance detection unit
120: contrast control unit
130: GPS unit
140: control unit

Claims (8)

An illuminance sensing unit installed at a plurality of locations in the vehicle to detect illuminance of the installed location and output a voltage value corresponding to the sensed illuminance;
It is provided on each of a plurality of vehicle glass mounted on the vehicle to determine the contrast, contrast control unit that changes the contrast in accordance with the external applied voltage;
It determines whether the illuminance detector operates, compares voltage values of a plurality of positions output from the illuminance detector, determines at least one vehicle glass having a relatively high intensity of light applied from the outside, and determines the determined vehicle glass. A control unit that controls the contrast control unit so that the contrast becomes dark; And
Includes; GPS unit for receiving GPS information including the current latitude, longitude, time and date information,
The contrast control unit is provided with an electrochromic film, and is attached to a vehicle front glass, a vehicle right side glass, a vehicle rear glass, and a vehicle left side glass, respectively.
The control unit calculates and stores a sunrise time and a sunset time based on GPS information received from the GPS unit, or updates a previously stored sunrise time and sunset time, and if the current time is before the sunset time after passing the sunrise time, Operating the illuminance sensor,
The illuminance detecting unit includes a plurality of illuminance sensors respectively installed on the vehicle front glass, the vehicle right side glass, the vehicle rear glass, and the vehicle left side glass,
The control unit sequentially sorts voltage values output from the plurality of illuminance sensors to select an illuminance sensor having a priority voltage value, and the vehicle glass matched with the selected illuminance sensor is external compared to other vehicle glasses. It is judged that the intensity of the light applied from is high,
The contrast value according to the voltage value of each illuminance sensor is preliminarily controlled with reference to a contrast control table defined in advance, so that the contrast of the electrochromic film is controlled in stages according to the brightness level outside the vehicle.
When a voltage value of 1 V or less is output from the illuminance sensor installed on the front windshield or the rear windshield, the electrochromic film attached to the front windshield or the rear windshield is controlled to achieve 70% contrast, and exceeds 1 V and exceeds 2 V. When the voltage value below is output, the electrochromic film is controlled to be 75% contrast, and when the voltage value below 2V and 3V is output, the electrochromic film is controlled to be 80% contrast, exceeding 3V and 4V When the voltage value below is output, the electrochromic film is controlled to be 85% contrast, and when the voltage value exceeding 4V and 5V or less is output, the electrochromic film is controlled to be 90% contrast,
When a voltage value of 1 V or less is output from the illumination sensor installed on the right side glass or the left side glass of the vehicle, the electrochromic film attached to the right side glass or the left side glass of the vehicle is controlled to have a contrast of 40%, and exceeds 1 V. And when the voltage value of 2V or less is output, the electrochromic film is controlled to be 50% contrast, and when the voltage value exceeds 2V and the voltage value is 3V or less is output, the electrochromic film is controlled to be 60% contrast and exceeds 3V. And when a voltage value of 4V or less is output, the electrochromic film is controlled to be 70% contrast, and when a voltage value of 4V and 5V or less is output, the electrochromic film is controlled to be 80% contrast. Vehicle glass contrast control system.
delete delete delete As a contrast control method performed in the contrast control system of the vehicle glass,
(A) the control unit, based on the current latitude, longitude, time and date information received from the GPS unit, determining whether the illuminance sensor operates;
(1) the illuminance detection unit, sensing the illuminance of a plurality of positions of the vehicle and outputting a voltage value corresponding to the sensed illuminance;
(2) comparing the voltage values of a plurality of positions output from the illuminance detecting unit, and determining at least one vehicle glass having a relatively high intensity of light applied from the outside; And
(3) controlling, by the control unit, a contrast control unit installed on the vehicle glass so that the determined contrast of the vehicle glass is dark; includes,
The contrast control unit is provided with an electrochromic film, and is attached to a vehicle front glass, a vehicle right side glass, a vehicle rear glass, and a vehicle left side glass, respectively.
In the step (A), the control unit,
Calculate and store the sunrise time and sunset time based on the GPS information received from the GPS unit, or update the previously stored sunrise time and sunset time, and operate the illuminance detection unit if the current time passes before sunrise and before the sunset time And
The illuminance detecting unit includes a plurality of illuminance sensors respectively installed on the vehicle front glass, the vehicle right side glass, the vehicle rear glass, and the vehicle left side glass,
In the second step (2), the control unit,
The voltage values output from the plurality of illuminance sensors are sequentially arranged to select an illuminance sensor having a priority voltage value, and the vehicle glass matched with the selected illuminance sensor is applied to the outside from other vehicle glasses. Judged to have a high intensity,
In step (3), the control unit,
The contrast value according to the voltage value of each illuminance sensor is preliminarily controlled with reference to a contrast control table defined in advance, so that the contrast of the electrochromic film is controlled in stages according to the brightness level outside the vehicle.
When a voltage value of 1 V or less is output from the illuminance sensor installed on the front windshield or the rear windshield, the electrochromic film attached to the front windshield or the rear windshield is controlled to achieve 70% contrast, and exceeds 1 V and exceeds 2 V. When the voltage value below is output, the electrochromic film is controlled to be 75% contrast, and when the voltage value below 2V and 3V is output, the electrochromic film is controlled to be 80% contrast, exceeding 3V and 4V When the voltage value below is output, the electrochromic film is controlled to be 85% contrast, and when the voltage value exceeding 4V and 5V or less is output, the electrochromic film is controlled to be 90% contrast,
When a voltage value of 1 V or less is output from the illumination sensor installed on the right side glass or the left side glass of the vehicle, the electrochromic film attached to the right side glass or the left side glass of the vehicle is controlled to have a contrast of 40%, and exceeds 1 V. And when the voltage value of 2V or less is output, the electrochromic film is controlled to be 50% contrast, and when the voltage value exceeds 2V and the voltage value is 3V or less is output, the electrochromic film is controlled to be 60% contrast and exceeds 3V. And when a voltage value of 4V or less is output, the electrochromic film is controlled to be 70% contrast, and when a voltage value of 4V and 5V or less is output, the electrochromic film is controlled to be 80% contrast. How to adjust the contrast of vehicle glass.
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