KR102251641B1 - LED sign board with weather condition detection - Google Patents

Abstract

The present invention relates to an LED light-emitting type sign for weather condition detection. The LED light-emitting type sign includes: an LED sign provided with one or more LED light emitting diodes and formed to display by variously combining light emission and emission colors; a road environment sensing unit provided on one side of the LED sign to detect weather information; and a sign control system which records analysis information transmitted from the road environment sensing unit and controls a light-emitting method of the LED sign according to the received analysis information.

Description

LED sign board with weather condition detection

The present invention relates to a weather-sensing LED light-emitting type sign, and more particularly, by providing an image photographing device for detecting the environment of the road through which the vehicle passes, analyzing the image signal to be photographed, By judging the weather information, predicting the visible distance, and using LED light-emitting diodes, various combinations of the colors of the information sign providing information to the driver make it possible to easily check the guide information of the sign even at a short distance of sight. It relates to a weather-sensing LED light-emitting type sign that is equipped with a sign and enables accurate information transmission.

On roads through which vehicles pass, such as general roads, cities, national highways, highways, etc., drivers are installed by installing signs to prevent accidents between vehicles, frequent accidents that occur on the roads passing, or to guide dangers according to the regional characteristics or shape of the road. Is providing information to customers.

In addition, it is made of a material capable of reflecting light so that a driver moving at a high speed can clearly recognize information on a sign, and is manufactured to increase visibility and installed on the road.

However, the conventional signs generally installed as described above can be identified when the visibility distance on the road is secured, but it is difficult to identify when variables caused by weather such as fog, snow, rain, etc. Problems may arise that make it difficult to accurately identify information.

On the other hand, as an example of such a sign, in Korean Patent No. 10-1792738'road indicator', a road guide display board installed near the edge of a road or a sidewalk; A fixing part installed on an upper end of the road guide display plate; And a light source unit that is fixed to the fixing unit and emits light to the front side of the road guide panel in a light distribution pattern in which the light intensity of the center is weak and the intensity of light increases toward the edge thereof, wherein the LED module is mounted thereon. Road indicators, characterized in that they are fixed, are being posted.

However, conventional road indicators such as No. 10-1792738 only have a configuration that allows the road indicator to be identified using an LED module on a sign that reflects light, and measures the visible distance of the road and makes the sign emit light. No other means of increasing visibility have been posted.

In addition, in Korean Utility Model No. 20-2017-0000145'Safety induction and notification sign manufacturing method with both retroreflective function and luminous function', the entire or the entire surface except for the undercoat painting step and image printing part After printing photoluminescent and reflective functions on some parts, it consists of an intermediate painting step that prints text images, characters, etc., and a high-temperature heat treatment top coat surface painting step that improves weather resistance and hardness after liquid transparent coating and powder transparent coating. A feature of mixing or separating the reflective and light-emitting functions with an almost uniform thickness by supplementing the existing shortcomings of the over-reflection function and making the most of the advantages has been published.

However, notification signs such as No. 20-2017-0000145 as described above also have only means to accumulate and emit light from the outside, or to increase visibility by retroreflecting. No other means of configuration for measuring distances have been posted.

Therefore, in order to solve the above problems, there is an urgent need to develop a means for measuring a visible distance on a road and a sign that can vary color combinations and brightness depending on the road environment.

The present invention is to solve the above-described problem, detects the weather information of the road by a road environment detection unit that analyzes the weather information of the road, and adjusts the amount of light of the sign through an LED sign provided with LED light emitting diodes, It relates to a weather detection LED light-emitting type sign that can improve visibility through a combination of various colors.

Weather sensing LED light-emitting type sign according to an embodiment of the present invention for solving the above problems, the LED sign is formed to mark by various combinations of whether or not light emission and light emission color is provided with at least one LED light-emitting diode; A road environment detection unit provided on one side of the LED sign to detect weather information; And a sign control system that records the analysis information transmitted from the road environment detection unit and controls the light emission method of the LED sign according to the received analysis information.

The LED sign may be provided so that an LED light emitting diode in which RGB is integrated may emit light from the front side, implement colors of 24 to 32 bit colors, and may be supplied with power in a constant current method.

The road environment detection unit may include an image capturing device provided to capture an image or an image on the road; A pattern detection plate having a grid-shaped pattern and formed at a predetermined interval in front of the image capturing apparatus; A laser illumination that emits light within a range in which the image photographing apparatus is photographed; And it is possible to divide the image screen photographed by the imaging device, each divided image is provided to analyze the road environment by selecting at least one of a pattern detection analysis method, an FFT analysis method, a laser analysis method, or an image sampling analysis method, and the sensitivity of the analysis It may include an image analysis unit for setting an analysis line in the image screen to increase the.

In this case, the pattern detection analysis method may compare a difference in sharpness level of the pattern of the pattern detection plate that is photographed and sensed by the image capturing device.

In this case, in the FFT analysis method, a background image captured by the imaging apparatus may be input as a signal using a Fast Fourier Transform analysis method, and the distribution of frequencies measured by the analysis line may be compared.

In this case, in the laser analysis method, a laser light source is emitted from the laser illumination to the front of the image capturing device, and the sharpness level of the laser light source photographed by the image capturing device may be compared in the analysis line.

In this case, in the image sampling analysis method, an image photographed by the image capturing apparatus may be sampled every predetermined time, and each sampled image may be compared and analyzed in the analysis line.

The road environment sensing unit of the weather sensing LED light-emitting type sign according to an embodiment of the present invention further includes a non-contact temperature measuring device provided to measure the temperature of the road surface by an infrared sensing method, wherein the non-contact temperature measuring device, In order to prevent measurement errors due to shadows formed according to the location of the sun, it may be provided to measure the temperature of the road surface at one or more different locations.

In addition, a guide line forming unit provided to form a guide line at a location including a floor surface, a central wall, or a guard rail of the road; further comprising, the guide line forming unit, the driver according to information sensed by the road environment detecting unit You can use the LED to form a guide line to recognize the road condition.

In addition, a variable auxiliary sign is provided to enable recognition of the information sensed by the road environment detection unit as a character; further comprising, the variable auxiliary sign is provided at one end of the LED sign, to the rear of the LED sign It can be formed to enable rotation.

The weather detection LED light-emitting type sign according to an embodiment of the present invention can analyze weather information of a road through which a vehicle passes using image information photographed by an image capturing device, and divide the photographed image and perform a virtual analysis. There is an advantage in that the accuracy of image analysis can be improved by analyzing an image using various analysis methods using lines.

In addition, there is an advantage in that the driver's visibility is improved by variously combining the colors of the signs emitted by the LED using the analyzed image information, so that the information of the signs can be sufficiently read even from a distance.

1 is a perspective view showing the configuration of a weather sensing LED light-emitting type sign according to an embodiment of the present invention.
2(a) and (b) are exemplary views showing that the LED sign of FIG. 1 is color-combined by LED light emitting diodes.
3 is a block diagram showing a flow in which a weather detection LED light-emitting type sign is operated by a sign control system according to an embodiment of the present invention.
4 is a perspective view showing the configuration of a road environment detecting unit provided in FIG. 1.
5A and 5B are exemplary views showing a state in which the position of the pattern detection plate provided in FIG. 4 is changed.
6 is an exemplary view showing that a road environment detecting unit divides a screen according to an embodiment of the present invention.
7 is a view showing a Mooney detection analysis method of a road environment detection unit according to an embodiment of the present invention.
8 is a diagram showing an FFT analysis method of a road environment detection unit according to an embodiment of the present invention.
9 is a view showing a laser analysis method of a road environment detection unit according to an embodiment of the present invention.
10 is a diagram illustrating an image sample analysis method of a road environment detection unit according to an embodiment of the present invention.
11 is a perspective view showing a non-contact temperature measuring device provided in the road environment detection unit of FIG. 2.
12 is a perspective view showing a guide line forming unit provided in the road environment detection unit of FIG. 2.
13 is a perspective view showing a variable auxiliary sign according to an embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations may be applied and various embodiments may be provided. In addition, the content described below should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various elements, and their meanings are not limited, and are used only for the purpose of distinguishing one element from other elements.

The same reference numbers used throughout this specification denote the same elements.

The singular expression used in the present invention includes a plurality of expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise", "include" or "have" described below are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification. It is to be construed and not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

Hereinafter, with reference to FIGS. 1 to 13 will be described in detail for a light-emitting type sign having enhanced traffic stability according to an embodiment of the present invention.

1 is a perspective view showing the configuration of a weather-sensing LED light-emitting type sign according to an embodiment of the present invention, and Figs. 2(a) and (b) show that the color of the LED sign of Fig. 1 is combined by LED light-emitting diodes. It is an exemplary view, and FIG. 3 is a block diagram showing a flow in which a weather detection LED light-emitting type sign according to an embodiment of the present invention is operated by a sign control system.

1 to 3, the weather detection LED light-emitting type sign according to an embodiment of the present invention includes an LED sign 100, a road environment detection unit 200, a sign control system 300, and a solar power generation unit 400. ) Can be included.

First, the LED sign 100 may be provided with one or more LED light emitting diodes (not shown) provided to output light of various colors, and is provided inside the LED sign 100 to output light. can do.

At this time, the LED sign 100 may be provided in the same shape as a sign normally installed on a road, and in more detail, it may be formed in a planar structure consisting of a polygon including a circle, a triangle, and a square, but is not limited thereto. No, it may be formed in a three-dimensional shape such as a sphere shape or a tetrahedron, and it may be formed in various shapes so as to transmit road information to the driver.

In addition, the LED sign 100 is provided with a sign post 600 on the side of the road to be installed, and the LED sign 100 may be formed at one end of the post 600.

At this time, although it will be described later, the LED sign 100 may be installed in more than one on the road, and each LED sign 100 installed at a certain interval may be interlocked with each other to be installed in more than one. Each of the LED signs 100 installed at intervals can be controlled by a single sign control system 300 to share or control weather information detected by interlocking with each other, and to display the guide information identically according to road conditions. can do.

In addition, the size of the LED sign 100 is not limited, and according to the size of the provided LED sign 100, one or more LED light emitting diodes (not shown) are provided on the LED sign 100 so that the LED sign It may be provided to constitute 100.

The LED light-emitting diode (not shown) combines the primary colors of red (R), green (G), and blue (B) to realize the color of the sign information displayed on the front of the LED sign 100 in 24-bit to 32-bit colors. have.

In addition, LED light-emitting diodes (not shown) can not only implement various colors by combining RGB colors, but also adjust the output intensity of the light source, so that the brightness of the light source of the LED sign 100 is automatically adjusted according to the external brightness. It can be controlled to minimize power consumption.

That is, even if the same information is indicated, the color combination of the LED sign 100 may be different depending on the external environment or condition, or the brightness of the LED sign 100 may be adjusted so that the driver can increase the readability of the information of the LED sign 100. .

For example, as shown in (a) of FIG. 2, the text representing the provided information is made black in the daytime when the outside is bright, and the background can be combined with white. The text can be displayed in white so that the information can be easily seen from a distance.

At this time, as will be described later, the combination of light sources output to the front side using LED light-emitting diodes (not shown) such as color control or brightness control of the LED sign 100 is performed by the illuminance sensor 310 provided in the sign control system 300. It can be controlled according to the detected external brightness information.

The road environment detection unit 200 may be provided at one end of the post 600 provided so that the LED sign 100 is installed, and may be provided at the upper or lower end of the LED sign 100, but is not limited thereto, It is possible to be provided in the rear direction of the LED sign 100, or not formed on the post on which the LED sign 100 is provided, and provided at another position capable of observing the road.

At this time, the road environment detection unit 200 provided to observe the road may be provided to analyze weather information of the road to be photographed, and may be formed to transmit the analyzed weather information to the sign control system 300.

In addition, the road environment detection unit 200 may be provided in more than one, and separately from the road environment detection unit 200 provided at one end of the post 600, the same section may be repeatedly photographed, or a different angle may be photographed. A separate road environment detection unit 200 may be further provided to reduce the analysis error of weather information.

That is, the road environment detection unit 200 may be provided to photograph the road at a location where it is possible to check the weather information of the road to which the information is to be guided, and the location to be installed is limited within the range in which it is possible to photograph the road. It can be prepared not to be.

A detailed configuration of the road environment detection unit 200 and a method of analyzing weather information will be described in detail below.

Referring to FIG. 3, the sign control system 300 may control the LED sign 100 based on weather information photographed and analyzed by the road environment detection unit 200.

At this time, the sign control system 300 receives the information analyzed by the road environment detection unit 200 and displays the information to be displayed on the LED sign 100, or allows the driver to read the guide information of the LED sign 100. An RGB light source output from an LED light-emitting diode (not shown) may be combined to increase the value.

For example, as described above, the color combination of the LED sign 100 information may be different according to the external brightness, and in a situation in which the visible distance is secured according to the information detected by the road environment detection unit 200, the background color is changed to white. In situations where the visible distance is narrowed due to output or rain or fog, the readability can be improved by using a color with a low refractive index of light such as orange, and the guide information of the LED sign 100 is turned on to allow the driver to quickly It is possible to control the LED sign 100 to be recognized, it is possible to control the configuration of the weather detection LED light-emitting type sign (1) including the detailed configuration of the road environment detection unit (200).

At this time, the sign control system 300 according to an embodiment of the present invention can know time information for the location information and analysis information of the illumination sensor 310 and the LED sign 100 provided to detect external brightness. It may further include a GPS module (320).

4 is a projection perspective view showing the configuration of a road environment detection unit provided in FIG. 1, and FIGS. 5A and 5B are exemplary views showing a state in which the position of the pattern detection plate provided in FIG. 4 is controlled, 6 is an exemplary view showing that a road environment detecting unit divides a screen according to an embodiment of the present invention.

4 to 6, the road environment detection unit 200 of the weather detection LED light-emitting type sign board 1 according to an embodiment of the present invention includes an image photographing device 210, a pattern detection board 220, and a laser illumination. 230, and an image analysis unit 260 may be included.

The image capturing apparatus 210 may be provided with a camera sensor (not shown) capable of capturing an image or an image of a road to detect weather information.

At this time, the camera sensor (not shown) of the image capturing device 210 includes a daytime camera sensor (not shown) provided to photograph during the daytime when there is a lot of visible light, and a nighttime camera sensor capable of photographing a road situation at night when there is little visible light after sunset. A camera sensor (not shown) may be included, and a night camera sensor (not shown) may be provided in an infrared camera method.

The camera sensor (not shown) of the image capturing device 210 may be installed to look at the direction of the vehicle on the road at the location where the LED sign 100 is provided, but may be installed in a direction viewed from the front and the vehicle in progress. Alternatively, a plurality of road environment detection units 200 may be provided in one section so that both sides are photographed so that the image capturing apparatus 210 may be provided.

At this time, the image capturing device 210 has a fixed angle so that a certain area of the road to be detected can be photographed in real time, but the photographing angle can be adjusted by the sign control system 300, and the photographing section according to a certain time. It can be controlled to change.

At this time, the road environment detecting unit 200 may be provided with one image capturing device 210, but it is possible to have a plurality of image capturing devices 210 provided in one road environment detecting unit 200, Preferably, one image capturing device 210 is provided, and the front direction of the road environment detection unit 200 is preferably understood as a direction in which an image is photographed by the image capturing device 210.

The pattern detection plate 220 may allow a transparent plate having a grid pattern to be formed in the front direction of the image capturing apparatus 210.

At this time, the pattern detection plate 220 may be provided to be positioned on a part of the image photographed by the image photographing apparatus 210, and the pattern detection plate 220 is displayed on the entire image screen photographed by the image photographing apparatus 210. It is possible to make it visible, or to be photographed so as to show a ratio of 1/4 or 1/8 of the entire image.

That is, the ratio at which the pattern detection plate 220 is shown in the captured image may be variously adjusted, and may be displayed as much as necessary to analyze weather information.

In addition, the pattern detection plate 220 provided in the front direction of the road environment detection unit 200 can be moved up, down, left and right by the sign control system 300 so that the position can be adjusted even after being installed. Likewise, moving forward so as to be away from the imaging device 210 or moving in the direction of the imaging device 210 may allow detailed adjustment of a position within the screen photographed by the imaging device 210.

The laser illumination 230 may be provided at the top, bottom or side of the imaging apparatus 210 and may be formed so that the light source unit (not shown) of the laser illumination 230 faces the photographing direction of the imaging apparatus 210.

At this time, as the light source of the laser illumination 230, red, green, and blue colors may be used, but the present invention is not limited thereto, and various wavelengths capable of visually discriminating light are scattered by fine particles or moisture particles in the atmosphere. It is possible for a light source to be used.

In addition, one or more laser lights 230 may be provided, and light sources of each of the laser lights 230 may be formed differently to reduce an analysis error according to the color of the laser lights 230.

For example, a plurality of laser lights 230 formed side by side in the same direction, one using a 650-670 nm series red light source, the other using a 532 nm green series light source, so that different colors can be simultaneously imaged. It can be output in the screen direction of 210.

At this time, the weather sensing LED light-emitting type sign 1 according to an embodiment of the present invention may further include visible light 240 or infrared light (not shown) in addition to the laser light 230, and the visible light 240 or Infrared illumination (not shown) is positioned at the top, bottom, or side of the imaging device 210 in the same way as the laser illumination 230, and is formed so that the direction in which light is output is directed toward the shooting direction of the imaging device 210. I can.

Visible light 240 or infrared light (not shown) allows the output light source to be output to the front of the image capturing device 210 so that the visible light 240 or infrared light through the image screen photographed by the image capturing device 210 It is possible to check the light source output from (not shown).

At this time, the visible light 240 or the infrared light (not shown) may be selectively provided with one of the two, or the visible light 240 and the infrared light (not shown) may be provided side by side, and if provided at the same time It is also possible to use both lights, alternately use them by the sign control system 300, or use only one of the two lights.

The image analysis unit 260 may be provided to analyze weather information of a location where the weather sensing LED light-emitting type sign 1 is installed using an image screen photographed by the image capturing device 210, and the pattern sensing plate 220 ), a laser light 230, a visible light 240, or an infrared light (not shown) to analyze an image, or to analyze the weather information by comparing a captured image screen.

At this time, the image analysis unit 260 provides an analysis line 221 displayed as a solid line or a dotted line on the image screen photographed by the image capturing device 210 to analyze the entire area of the image screen, and the analysis line 221 It may be arranged to perform an image analysis on the point at which this is formed.

The analysis line 221 is formed on a part of the image screen to be photographed, may be formed in a horizontal direction or a vertical direction, and 3 to 5 lines may be formed, but is not limited thereto, and a plurality of analysis lines ( The 221 may be formed, and the direction may be formed diagonally, and when analyzing the image screen, it may be possible to analyze only a portion of the entire image screen in which the analysis line 221 is formed.

In addition, referring to FIG. 6, the image analysis unit 260 may arbitrarily divide the position of an image screen photographed by one image capturing device 210 to reconstruct the image in various ways. It is possible to adjust the screen according to the number of analysis.

For example, when the pattern detection plate 220 and the visible light 240 appear on the screen photographed by the image capturing device 210 as shown in (a) of FIG. 6, the pattern detection plate 220 to be photographed is placed in the upper right corner. And, the screen on which the visible light 240 is photographed is arranged to the lower right, and the screen on which the background is photographed in addition to the pattern detection plate 220 and the visible light 240 is arranged to the left, so that the image of each image analysis method You can make sure that the process proceeds smoothly.

In addition, the image screen to be photographed may be arranged by dividing the entire screen into four, but the present invention is not limited thereto, and the screen may be divided and arranged so as to be optimized for analysis, such as dividing into two or eight.

7 is a diagram showing a Mooney detection analysis method of a road environment detection unit according to an embodiment of the present invention, FIG. 8 is a view showing an FFT analysis method of a road environment detection unit according to an embodiment of the present invention, and FIG. 9 is an implementation of the present invention. A diagram showing a laser analysis method of a road environment detection unit according to an example, and FIG. 10 is a view showing an image sampling analysis method of a road environment detection unit according to an embodiment of the present invention.

7 to 10, the image analysis unit 260 according to an embodiment of the present invention may analyze weather information using an image screen photographed by the image capturing apparatus 210, and a pattern detection analysis method 261 ), FFT analysis method 262, laser analysis method 263, or image sampling analysis method 264 may be used to analyze weather information.

First, referring to FIG. 7, the pattern detection analysis method 261 photographs a pattern detection plate 220 that has a grid pattern and is provided so that the background is transparently reflected, and uses the difference in luminance or sharpness on the image screen for the grid pattern. Weather information can be analyzed on a video screen taken in real time.

In more detail, since the grid pattern line of the pattern detection plate 220 photographed by the image capturing device 210 is clearly displayed in clear or no fog weather, it is located at the analysis line 221 in the image being photographed. When the luminance level of the grid pattern line is compared with the place where the grid pattern is not located, the luminance level may be significantly different, but the grid located at the analysis line 221 in a cloudy weather situation due to fog, snow, rain, etc. Since the pattern line is photographed blurry, the luminance level of the grid pattern line may be detected low.

At this time, the image analysis unit 260 compares the luminance level of the grid pattern line of the pattern detection plate 220 with a reference luminance level, or compares the luminance or sharpness level with a location other than the grid pattern line to obtain weather information. Can make predictions

That is, the pattern detection analysis method 261 can predict the weather information by comparing and analyzing the difference in the image signal depending on the luminance or sharpness of the grid pattern line in the image screen when photographing the pattern detection plate 220, and a virtual analysis Instead of analyzing the entire image screen using the line 221, it analyzes a part of the image and shows a faster processing speed than when analyzing the entire image screen, while accurately analyzing weather information through a reference point using a grid pattern. You can make it possible to do.

Referring to FIG. 8, the FFT analysis method 262 may analyze weather information by taking an image image captured by the image capturing apparatus 210 as an input signal and converting it into a frequency.

The FFT analysis method 262 does not analyze the entire screen of the image photographed by the image capturing device 210, but analyzes the image information on the position of the analysis line 221, and frequency the image signal for the image to be analyzed. You can predict the weather information by converting it to.

At this time, the more frequent the change in the brightness value of the image appears, the higher the frequency distribution appears, and the lower the change in the brightness value of the image is, the lower the frequency. You can make it predictable.

For example, when the weather is clear, the frequency is distributed high because the brightness value changes frequently in the captured image, and the frequency is distributed less because the change in brightness is less than that on a sunny day when there is fog or when the weather is cloudy. Based on this, it is possible to predict the weather information by setting a frequency standard for a sunny day and a frequency standard for a cloudy day.

Referring to FIG. 9, in the laser analysis method 263, a light source output from a laser light 230, a visible light 240, or an infrared light (not shown) passes through the image photographing device 210, and photographing It is possible to predict the weather by comparing the sharpness of the light rays that vary depending on the weather.

In more detail, when the laser light source is output from the laser illumination 230 in a foggy situation, the light of the laser illumination 230 is scattered by fog particles floating in the air, making it possible to clearly check with the naked eye. The weather may be predicted by analyzing the luminance of the light rays positioned on the analysis line 221 at the time.

In this case, the laser analysis method 263 may increase the accuracy of weather information analysis by alternately using the laser light 230, the visible light 240, or the infrared light (not shown) according to the weather or time.

For example, in a snow or rain situation, it is difficult to accurately check the luminance or clarity of the laser illumination 230 with a narrow light beam, so the analysis line 221 uses the visible light illumination 240 with a wide output light beam. It is possible to facilitate the analysis of the video signal in

That is, in the laser analysis method 263, the laser illumination 230, the visible light illumination 240, or the infrared illumination (not shown) is used in the pattern detection analysis method 261 to contrast brightness or clarity in an image, such as a grid pattern line. In order to accurately check the brightness or clarity of the light source according to the environment such as fog, snow, rain, etc., each light can be used alternately to increase the accuracy of weather analysis.

Referring to FIG. 10, the image sampling analysis method 264 samples an image at the same location every set predetermined time and compares the image signal detected by the analysis line 221 with a previous image to predict the weather. have.

At this time, the image sampling analysis method 264 outputs the laser illumination 230 or the visible light illumination 240 in the process of sampling the image every time, and when comparing the sampled images, the image signal value according to the luminance or sharpness of the light beam is combined with each other. The comparison may be made, and the image signal values in the analysis line 221 may be compared using only the captured image screen.

As described above, the image analysis unit 260 according to an embodiment of the present invention can predict weather information by comparing and analyzing image signals using a captured image screen, and processing and analyzing each analysis method by adjusting the screen. It is possible, and it is also possible to predict the weather information by processing each analysis method at the same time.

FIG. 11 is a perspective view illustrating a non-contact temperature measuring device provided in the road environment sensing unit of FIG. 2, and FIG. 12 is a perspective view illustrating a guide line forming unit provided in the road environment sensing unit of FIG. 2.

11 to 12, the weather sensing LED light-emitting type sign plate 1 according to an embodiment of the present invention may further include a non-contact temperature measuring device 270 and a guide line forming unit 280.

The non-contact temperature measuring device 270 may be formed in the lower direction to measure the temperature of the road surface of the road environment detection unit 200, and may measure the temperature of the road surface by using an infrared sensing method.

At this time, the non-contact temperature measuring device 270 may be provided with one non-contact temperature measuring device 270 in one road environment detection unit 200, A plurality of non-contact temperature measuring devices 270 are provided in order to accurately detect a difference in surface temperature accordingly, and may be formed to sense temperatures at different locations.

The guide line forming unit 280 may be formed at one end of the LED sign, and may form a virtual guide line on the road by using a light source including LED or visible light.

In this case, the virtual guide line formed on the road may be expressed in various ways, and the presence or absence of the guide line may be controlled by the sign control system 300 according to the situation of the road.

For example, when the surface temperature of the road measured by the non-contact temperature measuring device 270 is very low and there is a risk of freezing on the road, the guide line forming unit 280 is controlled to form a guide line so as not to pass the section where the risk of freezing is high. Thus, it is possible to make it possible for a passing driver to immediately recognize the situation.

In this case, the guide line forming part 280 may be installed in the rear direction of the LED sign 100, but is not limited thereto and may be installed on one surface of the lower edge or the front part.

13 is a perspective view showing a variable auxiliary sign according to an embodiment of the present invention.

Referring to FIG. 13, the variable auxiliary sign 500 may be provided in a form coupled to one end including the upper, lower, or side surfaces of the LED sign 100, and the coupling portion is formed so as to be rotatable when not in use. It may be formed to be folded to the rear portion of the LED sign (100).

At this time, the variable auxiliary sign 500 may be controlled by the sign control system 300 to be unfolded forward or folded backward, and may be notified by text to a passing driver.

For example, if it is determined that there is a risk of freezing on the road according to the temperature measured by the non-contact temperature measuring device 270, the variable auxiliary sign 500 rotates forward, and information is provided by inputting a guide phrase such as'freeze caution'. Can be guided.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You will be able to understand. Therefore, the embodiments described above are illustrative and non-limiting in all respects.

1: Weather detection LED light-emitting sign
100: LED sign
200: Road Environment Detection Department
210: image recording device
220: pattern detection plate
221: analysis line
230: laser illumination
240: visible light illumination
250: infrared light
260: image analysis unit
261: pattern detection analysis method
262: FFT method
263: laser analysis
264: image sampling analysis method
270: non-contact temperature measuring device
280: guided linearity forming unit
300: sign control system
310: illuminance sensor
320: GPS module
400: solar power generation unit
500: variable auxiliary sign
600: prop

Claims (10)

An LED sign plate provided with at least one LED light-emitting diode and formed to mark by variously combining whether or not to emit light and color of light;
A road environment detection unit provided on one side of the LED sign to detect weather information; And
Including; a sign control system that records the analysis information transmitted from the road environment detection unit, and controls the light emission method of the LED sign according to the received analysis information,
The road environment detection unit,
An image photographing apparatus provided to photograph an image or an image on the road;
A pattern detection plate having a grid-shaped pattern and formed at a predetermined interval in front of the image capturing apparatus;
A laser illumination that emits light within a range in which the image photographing apparatus is photographed; And
It is possible to divide the image screen photographed by the imaging device, and it is provided to analyze the road environment by selecting at least one of a pattern detection analysis method, an FFT analysis method, a laser analysis method, or an image sampling analysis method for each divided image. An image analysis unit for setting an analysis line in the image screen to increase the weather detection LED light-emitting type signboard comprising:
The method of claim 1,
The LED signs,
A weather-sensitive LED light-emitting type sign, characterized in that an LED light-emitting diode in which RGB is integrated is provided to emit light from the front part, embodies 24-32-bit color colors, and supplies power in a constant current method
delete The method of claim 1,
The pattern detection analysis method,
Weather detection LED light-emitting type sign, characterized in that comparing the difference in the sharpness level of the pattern detection plate pattern photographed and detected by the image capturing device
The method of claim 1,
The FFT analysis method,
Weather detection LED light-emitting type sign, characterized in that the background image captured by the imaging device is input as a signal using a Fast Fourier Transform analysis method and the distribution of frequencies measured by the analysis line is compared.
The method of claim 1,
The laser analysis method,
In the laser illumination, a laser light source is emitted to the front of the image capturing device, and a sharpness level of the laser light source photographed by the image capturing device is compared in the analysis line.
The method of claim 1,
The image sampling analysis method,
A weather detection LED light-emitting type sign, characterized in that the image captured by the imaging device is sampled every predetermined time and each sampled image is compared and analyzed in the analysis line.
The method of claim 1,
The road environment detection unit,
Further comprising; a non-contact temperature measuring device provided to measure the temperature of the road surface in an infrared detection method,
The non-contact temperature measuring device,
Weather detection LED light-emitting type sign, characterized in that it is provided to measure the temperature of the road surface at one or more different locations in order to prevent measurement errors due to shadows formed according to the location of the sun.
The method of claim 1,
Further comprising; a guide line forming part provided to form a guide line at a location including a floor surface, a central wall or a guard rail of the road,
The guide line forming part,
Weather detection LED light-emitting type sign, characterized in that forming a guide line using LEDs to recognize the road condition to the driver according to the information detected by the road environment detection unit
The method of claim 1,
A variable auxiliary sign that is provided to recognize information sensed by the road environment detection unit as text; further includes,
The variable auxiliary sign,
Weather-sensing LED light-emitting type sign, characterized in that provided at one end of the LED sign and formed so as to be rotatable to the rear of the LED sign

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