KR20160128474A - System for controlling brightness of vehicle window - Google Patents

System for controlling brightness of vehicle window Download PDF

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Publication number
KR20160128474A
KR20160128474A KR1020150059025A KR20150059025A KR20160128474A KR 20160128474 A KR20160128474 A KR 20160128474A KR 1020150059025 A KR1020150059025 A KR 1020150059025A KR 20150059025 A KR20150059025 A KR 20150059025A KR 20160128474 A KR20160128474 A KR 20160128474A
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KR
South Korea
Prior art keywords
brightness
data
future
time
gps
Prior art date
Application number
KR1020150059025A
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Korean (ko)
Inventor
최진호
Original Assignee
휴먼플러스(주)
스마트이어 주식회사
최진호
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Application filed by 휴먼플러스(주), 스마트이어 주식회사, 최진호 filed Critical 휴먼플러스(주)
Priority to KR1020150059025A priority Critical patent/KR20160128474A/en
Publication of KR20160128474A publication Critical patent/KR20160128474A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/06—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles using polarising effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—3D [Three Dimensional] image rendering
    • G06T15/50—Lighting effects
    • G06T15/55—Radiosity
    • B60R2016/02—

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Graphics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Liquid Crystal (AREA)

Abstract

An embodiment of the present invention relates to a contrast control system for an automobile window, and more particularly, to a system capable of predicting the future environment of a running vehicle to control the brightness of a window of the automobile.
A contrast control system for an automotive window according to an embodiment of the present invention includes an illuminance sensor for measuring the current illuminance of a running vehicle and outputting illuminance data; A traveling speed sensor for measuring a current traveling speed of the automobile and outputting traveling speed data; A GPS receiver for receiving GPS signals from GPS satellites, processing the received GPS signals to output GPS position data and GPS time data; A map data storage unit for storing map data and outputting the map data upon request; Estimating the brightness of the future environment of the automobile on the basis of the outputted illumination data, the running speed data, the GPS position data, the GPS time data, and the map data, Determines a degree of lightness and outputs an electrical signal corresponding to the determined degree of lightness; And a contrast variable window in which the contrast is varied according to the electrical signal output from the control unit.

Description

{SYSTEM FOR CONTROLLING BRIGHTNESS OF VEHICLE WINDOW}

An embodiment of the present invention relates to a contrast control system for an automobile window, and more particularly, to a system capable of predicting the future environment of a running vehicle to control the brightness of the window of the automobile.

Efforts have been made to improve the internal temperature of the vehicle by blocking external light sources such as sunlight incident through the vehicle glass and to improve the glare of the driver or occupant.

As a part of this effort, liquid crystal panels using the physical and electrical properties of liquid crystals and polarization principles have been developed in recent years. Such liquid crystal panels have been developed and developed as vehicles or home-use canopy facilities. However, to be.

As the awning device using the liquid crystal panel described above, Korean Utility Model Publication No. 1998-017610 (hereinafter referred to as "Prior Art 1") has been disclosed. According to the technical point of the prior art 1, a liquid crystal panel which is installed in a side window of an automobile and which blocks or transmits incident light according to whether power is applied or not, and a solar cell Blocking device.

However, since the prior art 1 merely realizes only a very simple awning device using only the physical property or electrical property of the liquid crystal panel, it is possible to provide an environment in which the user can variously change settings There is a problem that it can not be provided.

On the other hand, Korean Patent Laid-Open Publication No. 2010-0043301 (hereinafter referred to as " Prior Art 2 ") is capable of providing a user environment capable of various setting and changing of a sunshade or a sunshine environment under various natural conditions such as day and night, And a control method thereof.

The prior art 2 controls the brightness of the window of the vehicle based only on the current temperature and the radiation amount information through the Internet so that the future situation can not be predicted at all and the environment surrounding the vehicle is not considered at all Therefore, it is difficult for the driver to receive constant and stable light intensity.

KR 2010-0043301 A

It is an object of the present invention to provide a contrast control system for a vehicle window that can automatically control the brightness of a window of an automobile by predicting a future environment of a running vehicle while meeting the necessity of the prior art described above.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

A contrast control system for a vehicle window according to an embodiment of the present invention includes an illuminance sensor for measuring the current illuminance of a running vehicle and outputting illuminance data; A traveling speed sensor for measuring a current traveling speed of the automobile and outputting traveling speed data; A GPS receiver for receiving GPS signals from GPS satellites, processing the received GPS signals to output GPS position data and GPS time data; A map data storage unit for storing map data and outputting the map data upon request; Estimating the brightness of the future environment of the automobile on the basis of the outputted illumination data, the running speed data, the GPS position data, the GPS time data, and the map data, Determines a degree of lightness and outputs an electrical signal corresponding to the determined degree of lightness; And a contrast variable window in which the contrast is varied according to the electrical signal output from the control unit.

Here, the controller may check the brightness at the current point of time from the illumination data, and calculate a moving distance to the future point of time of the car by using the time interval between the preset current time point and the future point of time and the traveling speed data Calculates the future position of the automobile by reflecting the calculated travel distance to the map data, and determines the brightness of the future environment by determining the calculated surrounding environment at the future location.

Here, the surrounding environment at the future position may be determined by comparing the time at the future time with a predetermined threshold time.

Here, the surrounding environment at the future position can be determined according to the place characteristics shown in the map data.

Here, the controller may determine the brightness level by comparing the brightness of the current point of view with the brightness of the determined future environment from the brightness data of the current point of time, The brightness of the current point of time is bright and the brightness of the future environment is bright or dark, the brightness level is determined to be darker than the preset reference brightness level, and the brightness of the current point is dark If the brightness of the future environment is bright or dark, the brightness level may be determined to be brighter than the standard brightness level.

The controller may predict the brightness of the future environment of the automobile using a sequential Bayesian model.

The contrast variable window may include a transparent glass plate, a liquid crystal device disposed on the transparent glass plate for blocking or passing light according to the electrical signal, and a backlight for providing predetermined light to the liquid crystal device.

The use of the contrast control system of an automobile window according to the embodiment of the present invention has an advantage in that the contrast of a window of an automobile can be automatically controlled by predicting the future environment of a running vehicle. Therefore, the driver can obtain stable and comfortable light intensity despite the sudden change of environment, so that the driver can operate more stablely.

1 is a schematic block diagram of an automotive window contrast control system according to an embodiment of the present invention.
2 is a flowchart for explaining a method of controlling the brightness and the darkness of an automobile window in the control unit 500 shown in FIG.
FIG. 3 is a flowchart showing a concrete example of step s100 for predicting the brightness of the future environment shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. It should be noted that in the drawings, the same reference numerals and the same elements are denoted by the same reference numerals even though they are shown on different drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a system and method for controlling a contrast of an automobile window according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of an automotive window contrast control system according to an embodiment of the present invention.

The contrast control system of an automobile window according to the embodiment of the present invention shown in Fig. 1 is mounted on an automobile. The contrast control system for an automobile window according to an embodiment of the present invention mounted on a vehicle includes an illuminance sensor 100, a GPS signal receiving unit 200, a traveling speed sensor 300, a map data providing unit 400, a control unit 500 ), A contrast variable window 600, and a headlight 700. [

The illuminance sensor 100 is a sensor for estimating illuminance. The light intensity sensor 100 may be mounted on a front window, a rear window, or a side window of a vehicle or mounted on a rearview mirror of an automobile.

The light intensity sensor 100 may be a semiconductor device such as a photocell. A photovoltaic cell is a semiconductor device used to generate electromotive force by utilizing the photosensitive effect of a semiconductor. Selenium photovoltaic cells and silicon solar cells are a type of photovoltaic cell.

The illuminance sensor 100 measures the illuminance at the current position of the automobile equipped with the contrast control system of the automobile window according to the embodiment of the present invention and provides the measured illuminance data to the control unit 500.

The GPS signal receiving unit 200 receives GPS signals from a plurality of GPS satellites. The GPS signals received from each GPS satellite include a GPS identification signal, a GPS time signal, and a GPS position signal.

The GPS signal receiving unit 200 processes GPS signals received from a plurality of GPS satellites, outputs GPS data, and provides GPS data to the control unit 500. Here, the GPS data provided to the control unit 500 may be a GPS signal itself, or may include GPS time data and GPS position data that have been processed.

The traveling speed sensor 300 measures the current traveling speed of a vehicle equipped with a light and dark control system for an automobile window according to an embodiment of the present invention and provides the measured traveling speed data to the control unit 500. [

The map data storage unit 400 stores map data. The map data storage unit 400 provides the stored map data to the control unit 500. Here, the map data storage unit 400 may provide the stored map data to the control unit 500 at the request of the control unit 500.

As shown in FIG. 2, the controller 500 estimates the brightness of the future environment (s100), and determines the degree of lightness and darkness of the brightness variable window 600 that is suitable for the brightness of the predicted future environment (S300). Here, the 'future environment' refers to a surrounding environment where the automobile is located at a specific time in the future rather than the present time of the automobile equipped with the contrast control system of the automobile window according to the embodiment of the present invention. A certain point in the future (hereinafter referred to as the 'future point') may vary depending on the designer or driver's configuration.

The step s100 of predicting the brightness of the future environment includes the steps of estimating the brightness of the various environments provided from the illuminance sensor 100, the GPS signal receiving unit 200, the traveling speed sensor 300 and the map data providing unit 400 shown in Fig. And estimating the brightness of the future environment using the data.

A specific example of the step s100 for predicting the brightness of the future environment will be described with reference to Fig.

FIG. 3 is a flowchart showing a concrete example of step s100 for predicting the brightness of the future environment shown in FIG.

Referring to FIG. 3, step s100 of predicting the brightness of the future environment shown in Fig. 2 includes steps of confirming the brightness at the current point of time s110, calculating the future position of the future point of time s130, And determining a brightness at a future location (s150).

In step S110 of checking the brightness at the current point of time, the brightness at the current point of time can be confirmed from the illuminance data provided from the illuminance sensor 100 shown in FIG.

The step s130 of calculating a future position at a future time point includes the GPS position data provided from the GPS signal receiving unit 200 shown in Fig. 1, the traveling speed data provided from the traveling speed sensor 300, It is possible to calculate a future position at a future time point by using the map data provided from the terminal 400. Specifically, assuming that the time interval between the current time point and the future time point is preset by the designer or the user, the time at the future time point can be calculated from the GPS time data, and the time interval between the current time point and the future time point, It is possible to calculate the travel distance to the future point by using the data, and if the calculated travel distance is reflected in the map data, the future position at the future point can be calculated. Here, the meaning of reflecting the calculated travel distance on the map data means that the travel route of the moving vehicle is predicted on the basis of the GPS position data and the map data, and a point corresponding to the calculated travel distance on the predicted travel route, That is, to calculate the future position.

The step of determining the brightness at the future position (s150) can determine the brightness at the future position by discriminating the surrounding environment at the future position.

Here, the surrounding environment at the future position can be determined from the time at the future time calculated in step s130. For example, the brightness at the future position can be determined by comparing the time at the future time with the set threshold time. More specifically, if the threshold time is set to the sunset time, the brightness at the future position is determined to be bright if the time at the future time is before the set sunset time, The brightness can be determined to be dark. In addition, when the threshold time is set as the sunrise time, the brightness at the future position is determined to be dark if the time at the future time is before the set sunrise time, and the brightness at the future position is bright when the time at the future time is set after the set sunrise time . Here, the threshold time is not limited to a specified sunrise or sunset time, but may be variable. For example, today's sunrise and sunset times may be set via the Internet. Also, the threshold time may be set to a specific time, such as 6 PM. Also, the threshold time may be set considering both the area and the time. The sunrise time and the sunset time of the corresponding location may be set down through the Internet based on the GPS position data.

In addition, the surrounding environment at the future position can be determined according to the characteristic of the place shown in the map data provided from the map data storage unit 400. [ For example, if the calculated future location is a dark location, the brightness at the future location is determined to be dark. Here, the dark place may be, for example, in a tunnel, a surrounding terrain or a place shaded by surrounding buildings. The shaded area may vary with time considering the position of the sun with respect to the time of the future point of view.

Referring again to FIG. 2, a step (S300) for the controller 500 to determine the degree of lightness and darkness of the light-and-variable window 600 will be described in detail.

In step s100, the controller 500 predicts the brightness of the future environment, and then determines the degree of lightness and darkness of the light and dark variable window 600 shown in FIG. 1 corresponding to the predicted future environment. For example, if the brightness of the current point of view is bright and the brightness of the future point of view is bright, the degree of darkness is determined by the darkness and darkness optimized for the eyes of the driver. If the brightness of the current point of view is bright and the brightness of the future point of view is dark, it is difficult for the driver to recognize objects or situations in a dark environment when going from a bright environment to a dark environment. When the brightness of the current point is dark and the brightness of the future point is bright, the degree of lightness and darkness is determined by the light and the light optimized for the driver's eyes. If the brightness of the current point is dark and the brightness of the future point is also dark, the degree of lightness and darkness are determined with bright light and brightest light.

Here, a 'reference value of brightness' for distinguishing 'brightness of brightness' from 'brightness of brightness' may be preset. In addition, 'standard contrast' for distinguishing 'bright contrast' and 'dark contrast' may be preset. The controller 500 can determine the degree of lightness using the reference value of brightness and the reference brightness.

The control unit 500 provides an electrical signal corresponding to the determined degree of lightness and darkness to the lightness variable window 600 in order to control the lightness and darkness of the lightness and lightness variable window 600.

The control unit 500 receives various data provided from the illuminance sensor 100, the GPS signal receiving unit 200, the traveling speed sensor 300 and the map data providing unit 400 using a predetermined algorithm, The brightness of the image can be predicted. Here, the predetermined algorithm may be a sequential Bayesian model.

The sequential Bayesian model uses the Markov chain Monte Carlo (MCMC) method, which is used in the overall Bayesian model, although the update is done sequentially as the data is added, just like the particle filter. Sampling of the sequential Bayesian model measures the posterior distribution using the prior distribution representing the characteristics of the model and the likelihood measured from the data, samples the data from the measured distribution, and the posterior distribution is a series Process. This can be understood to be similar to the process of evolutionary computation, which is repeated with previous generations generation, fitness calculations, and fitness generation. Here, the particle filter is also referred to as a sequential Monte Carlo method, and is a model for estimating and sequentially updating a time-dependent system model based on the Bayesian approach. The overall Bayesian model is based on the data group obtained so far, It is a model that constructs the distribution and then uses an appropriate method for sampling.

Referring again to FIG. 1, the control unit 500 may control the headlight 700 to emit light suitable for the brightness of the predicted future environment. For this, the controller 500 may provide the headlight 700 with an electrical signal corresponding to the brightness of the predicted future environment. The electrical signal provided may be a predetermined current, and the amount of current may be a value corresponding to the brightness of the predicted future environment.

The contrast variable window 600 is a window in which the contrast can be varied by an electrical signal provided from the control unit 500. [ For example, the contrast variable window 600 may include a transparent glass plate, a liquid crystal device disposed on the transparent glass plate and blocking or passing light according to an electrical signal provided from the control unit 500, And a back light device.

In addition, the contrast variable window 600 may be a transparent glass plate and a predetermined film composed of ceramic and lithium ions attached to the transparent glass plate. The light and dark can be controlled by the movement of lithium ions by the electric signal provided from the control unit 500. [

The contrast variable window 600 may be at least one of a front window, a rear window, and a side window of an automobile.

The headlight 700 emits a predetermined light corresponding to the electric signal provided from the control unit 500.

As described above, the contrast control system of the automobile window according to the embodiment of the present invention can automatically control the brightness and the darkness of the automobile window in advance by determining the future surrounding conditions of the automobile in motion. Therefore, since the driver receives constant and comfortable light intensity in spite of sudden environmental changes, there is an advantage that the driver can perform more stable operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It will be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100: Light sensor
200: GPS signal receiver
300: Travel speed sensor
400: Offering map data
500:
600: Contrast variable window
700: Headlight

Claims (7)

An illuminance sensor for measuring the current illuminance of the running vehicle and outputting illuminance data;
A traveling speed sensor for measuring a current traveling speed of the automobile and outputting traveling speed data;
A GPS receiver for receiving GPS signals from GPS satellites, processing the received GPS signals to output GPS position data and GPS time data;
A map data storage unit for storing map data and outputting the map data upon request;
Estimating the brightness of the future environment of the automobile on the basis of the outputted illumination data, the running speed data, the GPS position data, the GPS time data, and the map data, Determines a degree of lightness and outputs an electrical signal corresponding to the determined degree of lightness; And
A contrast variable window in which the lightness and darkness vary according to the electrical signal output from the control unit;
And a contrast control system for a vehicle window. The apparatus of claim 1,
Checking the brightness at the present time point from the illumination data,
Calculating a moving distance to the future point of time of the automobile using the time interval between the current time and the future time and the traveling speed data,
Calculates the future position of the automobile by reflecting the calculated travel distance on the map data,
And determines the brightness of the future environment by determining the calculated surrounding environment at the future position. 3. The method of claim 2,
Wherein the surrounding environment at the future position is determined by comparing the time at the future time with a predetermined threshold time. 3. The method of claim 2,
Wherein the surrounding environment at the future position is determined according to a characteristic of the place indicated in the map data. The apparatus of claim 1,
Checking the brightness at the present time point from the illumination data,
Comparing the brightness of the current time and the brightness of the determined future environment to determine the degree of lightness,
The brightness of the current point of time is bright and the brightness of the future environment is bright or dark based on a reference value of a preset brightness,
Wherein the brightness control unit determines the contrast level to be brighter than the reference brightness level if the brightness of the current time point is dark and the brightness of the future environment is bright or dark based on the reference value of the brightness. The method according to claim 1,
Wherein the control unit predicts the brightness of the future environment of the automobile using a sequential Bayesian model. The method according to claim 1,
Wherein the contrast variable window comprises a transparent glass plate, a liquid crystal device disposed on the transparent glass plate for blocking or passing light according to the electrical signal, and a backlight for providing a predetermined light to the liquid crystal device. Control system.
KR1020150059025A 2015-04-27 2015-04-27 System for controlling brightness of vehicle window KR20160128474A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100043301A (en) 2008-10-20 2010-04-29 (주)푸른솔 Control method and the system of sun visor for auto-mobile

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100043301A (en) 2008-10-20 2010-04-29 (주)푸른솔 Control method and the system of sun visor for auto-mobile

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