KR20190041573A - Control system, and method thereof for led lighting - Google Patents

Abstract

The present invention relates to an LED lighting control system and a method thereof. The LED lighting control system including a plurality of LED lights and a central control device for irradiating a vehicle traveling direction comprises: an LED lighting having a light receiving element and detecting the vehicle by a light intensity measured by the light receiving element, and transmitting, to the central control device, the light intensity information measured by a light intensity for a preset time from the moment detected by the vehicle; and a central control device for controlling the plurality of LED lights using the light intensity information received from the LED lighting. The present invention has an effect of efficiently saving energy by providing a field of view to a driver in a road section time period in which a passage of the vehicle is intermittently generated as there is little traffic.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lighting control system,

The present invention relates to an LED lighting control system and method, and more particularly, to a control system and method for controlling LED lighting in response to an LED lighting environment.

Around the road including the national highway and the expressway, a lighting device illuminating the roadway is provided for securing the driver's view.

Generally, the lighting apparatus is controlled to illuminate the roadway in consideration of the time zone. For example, between 18 and 06 o'clock, the lighting device is turned on to secure the driver's view, and after 06 o'clock the oven is turned off and the lighting device is turned off.

However, in the middle of the night when the number of vehicles suddenly decreases, energy is wasted always lighting up the lighting apparatus, and energy consumption is more serious in the mountains and the outskirts where there are few moving vehicles in the usual times.

Further, in the case where the roadway illuminated by the lighting device is constituted by a plurality of lanes, there is a possibility that the amount of light emitted by the lane may be smaller in a specific lane as the number of lanes increases.

Korean Patent Publication No. 10-2014-0119685 (published on October 10, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting control system and a control method for saving energy by turning on and off lights or controlling the brightness of illumination in consideration of the vehicle speed, lane information and traffic volume of a moving vehicle.

In order to achieve the above-mentioned object, an LED lighting control system according to the present invention is a LED lighting control system including a plurality of LED lights for illuminating in a traveling direction of a vehicle and a central control device, An LED lighting unit that senses the vehicle by the measured luminous intensity and transmits luminous intensity information of luminous intensity measured from a moment when the vehicle is sensed to the central control unit; And a central control unit for controlling the plurality of LED lights using the brightness information received from the LED lighting.

According to another aspect of the present invention, there is provided a method of controlling a system for controlling a plurality of LED lights including a light receiving element and emitting light in a vehicle traveling direction, Detecting a vehicle by the light intensity measured by the light receiving element; And (b) controlling the plurality of LED lights using brightness information obtained by measuring luminosity for a preset time from a moment when the vehicle is sensed.

According to various aspects of the present invention, there is an effect that energy is saved by effectively providing a driver with a field of view during a road section time period where vehicle traffic is intermittent due to a small amount of traffic.

Furthermore, energy is economically saved by calculating the traffic volume using the light intensity pattern and the light intensity distribution measured with the inexpensive light receiving element.

1 is an example of an LED lighting arrangement on a road according to an embodiment of the present invention,
2 is a configuration diagram of an LED lighting control system according to a first embodiment of the present invention,
3 is a configuration diagram of an LED lighting control system according to a second embodiment of the present invention;
FIG. 4 is a configuration diagram of the central control device of FIG. 2 according to the first embodiment of the present invention,
5 is a configuration diagram of the central control device of FIG. 3 according to the second embodiment of the present invention;
6 is a flowchart of a method of controlling LED lighting corresponding to a vehicle speed value of an LED lighting control system according to an embodiment of the present invention;
FIG. 7 is a flowchart of an LED lighting control method corresponding to lane information of an LED lighting control system according to an embodiment of the present invention;
8 is a flowchart of an LED lighting control method corresponding to a traffic amount of the LED lighting control system according to the embodiment of the present invention,
FIG. 9 is a flowchart of an LED lighting control method corresponding to the traffic volume of the LED lighting control system according to the second embodiment of the present invention,
FIG. 10 is a diagram illustrating a luminance control value reference table according to a traffic amount per time period according to an exemplary embodiment of the present invention,
11 is an illustration of LED lighting control corresponding to a luminance control value according to traffic amount per time period according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in order to facilitate understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention can be configured by combining at least any one of individual components, individual functions, or individual steps included in each embodiment.

In particular, some claims of the claims for convenience include alphabets such as '(a)' for convenience, but these alphabets do not define the order of each step.

Hereinafter, each of the signals referred to in the embodiments of the present invention may refer to one signal transmitted by one connection or the like, but it may also mean a series of signals transmitted for the purpose of performing a specific function have. That is, in each embodiment, a plurality of signals transmitted after a predetermined time interval or after receiving a response signal from the counterpart device can be represented by one signal name for convenience.

FIG. 1 shows an example of an LED lighting 10 arranged on a road (or a 'roadway') according to an embodiment of the present invention. The LED lighting 10 installed at regular intervals on the roadway has a predetermined height (For example, pro-beam) (refer to (a)). For example, LED lighting is installed 1.5m high and 5m apart.

The LED illumination 10 includes one LED illumination 10 or a plurality of LED illumination 10.

FIG. 2 shows a configuration diagram of an LED lighting control system according to the first embodiment of the present invention. The LED lighting control system includes an LED lighting 10 and central control devices 100 and 200, (Not shown) or a microwave device (not shown).

Wherein the vibration meter and the microwave device are each included in an LED lighting control system, but may also be provided in an LED lighting according to an embodiment. In the following description of the present invention, a vibration meter and a microwave device are separately included in the LED lighting control system to clarify the invention, and the present invention is not limited to the specific embodiment described above. It is possible to carry out various modifications and modifications without departing from the scope of the present invention.

The LED lighting unit 10 includes a plurality of light sources provided at predetermined intervals on the roadway and illuminates the vehicle in the traveling direction. The LED lighting unit 10 receives the lighting control signal from the central control devices 100 and 200, And to change or control the brightness of the LED illumination 10.

Here, the illumination control signal includes any one of the luminance change signal including the specific luminance, the lighting signal and the light-off signal.

Further, the LED lighting 10 further includes a light receiving element, and detects the vehicle by the light intensity measured by the light receiving element. For example, the light receiving element measures the external brightness of the LED illumination 10 to sense the vehicle.

According to the embodiment, the LED lighting 10 may include a light emitting element and a light receiving element in some lights installed in the roadway, and the remaining lights may include only light emitting elements.

Here, the light emitting device is a light emitting diode (LED) and a laser diode (LD) that convert an electrical signal into an optical signal. LEDs are semiconductors made of Ga (gallium), P (phosphorus), and As (arsenic) materials. They emit a small amount of light spontaneously at a short distance and LD emits large capacity at long distance.

Here, the light receiving element is a device that converts light energy into electric energy, and includes a photodetector, an optical sensor, and an optical receiver. The photodetector includes a photodiode (PD), an avalanche photodiode (APD) ). PD is a diode that uses a phenomenon in which an electromotive force is generated when light is irradiated on a PN junction of a semiconductor, and is used for detecting optical power or converting optical power into electric force. In the APD, as the reverse bias voltage of the photodiode approaches the vicinity of the avalanche voltage, an electric field is generated and a pair of the home-electrons is generated, so that sufficient energy is obtained.

Also, the LED illumination 10 transmits the luminous intensity information to the central control devices 100 and 200, wherein the luminous intensity information is the information measured during the predetermined period of the luminous intensity measured by the light-receiving element. For example, when the vehicle is detected by the light intensity measured with the light receiving element, the light intensity information is information obtained by measuring the light intensity for a preset time from the moment the vehicle is sensed. The brightness information includes a brightness pattern and a brightness distribution for a predetermined time including a brightness measured for a specific time.

Here, the predetermined time is a specific moment or a value smaller than the time from the moment when the vehicle senses the vehicle to the moment when the vehicle passes the light-receiving element, and the predetermined time is the distance that the light- Below the value divided by the speed limit is considered appropriate.

The vibration measuring device transmits the vibration information measured using the vibration source and the frequency to the central control device 200.

Here, the vibration information includes information measured using vibration sources and frequencies, and includes values measured during a predetermined period of vibration frequency (Hz) expressed by displacement, velocity, and acceleration. And further includes a dispersion of the vibration frequency. The vibration information is represented by 'Hz', 'dB (V)' and '%' depending on the expression system.

The microwave apparatus transmits proximity information of the external vehicle based on the difference between the frequency of the sensing signal reflected from the external vehicle and the frequency of the transmitted sensing signal after the sensing signal is transmitted to the external vehicle To the central control device. Specifically, the microwave apparatus compares the transmitted frequency of the sensing signal with the frequency of the received sensing signal to calculate the proximity state information of the external vehicle based on the detection of the frequency change and the phase shift, and transmits the proximity state information to the central control apparatus.

The proximity state information of the external vehicle includes a distance between the external vehicle and the microwave device, a vehicle speed value of the external vehicle, an acceleration value of the external vehicle, and an estimated arrival time of the external vehicle.

Here, the estimated arrival time of the external vehicle is a time when the external vehicle arrives at the microwave device or the LED illumination.

The central control devices 100 and 200 are devices for controlling the LED lighting 10 by receiving brightness information from the LED lighting 10. The central control devices 100 and 200 communicate with the LED lighting 10 installed in a specific area of the roadway, And controls the brightness of the LED illumination (refer to (a)). As shown in FIG. 2B, the LED lighting control system includes a plurality of central control devices 100 and 200 capable of communicating with each other, Lt; RTI ID = 0.0 > a < / RTI >

In addition, the central control devices 100 and 200 control the LED lighting using the vibration information received from the vibration measuring device. More specifically, the central control devices 100 and 200 calculate the traffic volume using the brightness information and the vibration information, LED light control. Here, the vibration information is described above, and a further explanation will be omitted.

The central control devices 100 and 200 control a plurality of LED lights using the proximity state information of the external vehicle received from the microwave device. Specifically, the central control devices 100 and 200 control the LED lighting using the luminance information and the proximity state information of the external vehicle, .

For example, the central control devices 100 and 200 control which LED lights are to be turned on when using external vehicle proximity information including the vehicle speed value of the external vehicle, the distance difference between the external vehicle and the LED lighting, and the traffic volume . For example, when the distance between the external vehicle and the microwave device is less than a specific distance or the distance between the external vehicle and the LED illumination is less than a specific distance, the central control devices 100 and 200 may be provided with LED lighting . As another example, the central control devices 100 and 200 light a plurality of LED lights installed in the direction in which the external vehicle travels, at a vehicle speed value of the external vehicle, specifically, in a direction in which the external vehicle proceeds. In addition, the central control devices 100 and 200 may turn on or off the LED lighting according to the estimated time of arrival of the external vehicle, or a predetermined time before the expected arrival time.

More specifically, the central control apparatuses 100 and 200 will be described with reference to FIG.

FIG. 3 is a block diagram of an LED lighting control system according to a second embodiment of the present invention. In the second embodiment, the LED lighting control system includes a traffic information collector for detecting a vehicle and calculating a traffic volume and a vehicle speed value 20). Hereinafter, a configuration diagram of the LED lighting control system according to the second embodiment will be described with reference to FIG.

The LED lighting control system according to the second embodiment is composed of an LED lighting 10, a traffic information collector 20 and a central control device 200.

The LED lighting device 10 includes a light emitting device and irradiates the LED lighting device 10 in the traveling direction of the vehicle. The LED lighting device 10 receives the lighting control signal from the central control device 200 to turn on and off the LED lighting 10, And controls.

The traffic information collecting unit 20 collects traffic information of an ITS and an ITS using Intelligent Transport Systems (ATTS), Advanced Traffic Management System (ATMS), Advanced Traveler Information System (ATIS) A commonly used device that collects traffic information in transportation systems including APTS, Advanced Public Transportation System (CVS), Commercial Vehicle Operation (CVO) and Advanced Vehicle and Highway System (AVHS) to be. The traffic information collector 20 is an apparatus included in the LED lighting control system, but may be an apparatus included in another traffic system according to an embodiment.

The traffic information collector 20 calculates the average speed of the moving vehicle, the vehicle speed value of the specific vehicle, the lane information, and the traffic volume for a specific time, and transmits the calculation result to the central control device 200.

The central control unit 200 receives the average speed, the vehicle speed value, the lane information, and the traffic amount from the traffic information collector 20 and controls the LED lighting 10. The concrete description will be given with reference to FIG.

The central control device 100 includes a lighting control information unit 103, a reception unit 104, and a lighting control unit 108. The lighting control unit 103, the lighting control unit 108, And further includes a vehicle speed value calculating section 105, a lane information calculating section 106 and a traffic volume calculating section 107 in accordance with the embodiment.

The illumination control information unit 103 stores the illumination identification values of the plurality of LED lights 10 controlled by the central control device 100. [ Where the illumination identification value is a unique identification value of each LED illumination 10.

The receiving unit 104 receives the luminous intensity information from the LED illumination unit 10 and the receiving unit 104 transmits the received luminous intensity information to the illumination control information unit 103 so that the lighting control information unit 103 .

The receiving unit 104 receives the vibration information from the vibration measuring instrument or the proximity state information of the external vehicle from the microwave apparatus, and the vibration information and the proximity state information of the external vehicle are described in FIG. 2, so that further explanation is omitted .

The vehicle speed value calculation unit 105 calculates the vehicle speed value using the luminance pattern of the luminance information and transmits the calculated vehicle speed value to the lighting control unit 108. [

Here, the luminous intensity pattern is a numerical representation of a change in luminous intensity with respect to time, specifically, a change in luminous intensity within a predetermined period of time.

Here, the vehicle speed value is a value obtained by calculating a vehicle speed value using a change in luminous intensity versus time, specifically, a vehicle speed value calculated by digitizing a change in luminosity within a predetermined time.

The vehicle speed value calculating unit 105 may also calculate the vehicle speed value using the vehicle speed value included in the proximity state information of the external vehicle received by the receiving unit 104 and the acceleration value of the external vehicle.

The lane information calculation unit 106 calculates the lane information using the luminous intensity distribution of the luminous intensity information, and transmits the calculated lane information to the illumination control unit 108. [

Here, the luminous intensity distribution is a numerical value of the distribution of luminous intensity at a specific point in time, and is a numerical value in which the luminous intensity obtained by the LED lighting 10 having a plurality of light-receiving elements is suitable, It may be a distribution of luminous intensity.

The lane information calculation unit 106 divides the luminous intensity distribution into the number of lanes and calculates a lane corresponding to the area having the maximum value in the luminous intensity distribution. According to the embodiment, the lane information calculation unit 106 can calculate lanes using the luminous intensity pattern and the luminous intensity distribution. The luminous intensity distribution is divided into the number of lanes, The lane corresponding to the area is calculated.

The traffic volume calculation unit 107 calculates the traffic volume using the light intensity pattern of the light intensity information and the light intensity distribution, and transmits the calculated traffic intensity to the illumination control unit 108. Specifically, the traffic intensity distribution unit 107 distributes the light intensity distribution to the number of lanes, The traffic volume is calculated cumulatively for the set time.

Traffic volume is classified as 'high', 'medium', 'low' and 'very low' classified as 'red', 'orange', 'yellow' and 'green' You may.

Also, the traffic volume calculation unit 107 may receive the vibration information from the vibration meter, and calculate the traffic volume using the brightness information and the vibration information.

For example, the traffic volume calculation unit 107 distributes the luminous intensity distribution to the number of lanes, accumulates the luminescence pattern of each lane for a preset time, calculates the preliminary traffic volume, calculates the traffic volume using the preliminary traffic volume and vibration information To the lighting control unit 108. [

As a concrete example, when the calculated preliminary traffic volume is 'less' and the vibration information increases by at least 3 dB (V) for a predetermined time, the traffic volume is calculated as 'normal'.

When the traffic volume calculation unit 107 calculates the traffic volume using the brightness information and the vibration information, there is an effect that the error that may occur when the traffic volume is calculated using only the light intensity pattern and the light intensity distribution can be reduced or supplemented. For example, the light intensity pattern and the light intensity distribution may include an error including the brightness of a traffic signal including a traffic light.

The traffic volume calculation unit 107 calculates the traffic volume using the brightness information and the proximity state information of the external vehicle, and transmits the traffic volume to the lighting control unit 108. Specifically, when the traffic volume calculation unit 107 calculates the traffic volume using the brightness information including the light intensity pattern and the light intensity distribution, the traffic volume is calculated using the proximity state information of the external vehicle to increase the accuracy.

For example, the traffic volume calculation unit 107 distributes the light intensity distribution to the number of lanes, accumulates the light intensity pattern of each lane for a preset time, calculates the preliminary traffic volume, and uses the preliminary traffic volume and the near- And transmits the calculated traffic volume to the lighting control unit 108. [

The lighting controller 108 controls the brightness of the LED lights 10 or the lighting of the LED lights 10 using the received brightness information.

For example, the lighting control unit 108 controls the LED lighting 10 using the vehicle speed value received from the vehicle speed value calculation unit 105, Or a plurality of LED lights 10 are turned on in the vehicle traveling direction by using the vehicle speed value. Specifically, the lighting control unit 108 calculates a scheduled time for the vehicle to arrive at each of the LED lights 10 using the vehicle speed value, and illuminates or illuminates each of the LED lights according to a scheduled arrival time Each LED light can be lit.

The lighting control unit 108 controls the luminance by using the lane information received from the lane information calculation unit 106. The lane information indicates that the lane farther from the LED lighting 10 is the LED lighting 10).

The lighting control unit 108, which controls the plurality of LED lights 10 using the traffic volume received from the traffic volume calculation unit 107, controls lighting, lighting, and brightness of the LED lights corresponding to traffic volume. Specifically, the lighting control unit 108 preliminarily defines a luminance control value according to the amount of time traffic and controls the luminance of the LED lighting 10 by extracting the luminance corresponding to the amount of traffic received from the traffic amount calculation unit 107. FIG. 10 shows an example of the luminance control value according to the amount of time-based traffic.

In addition, the lighting control unit 108 controls which LED lighting is to be turned on by using the vehicle speed value of the external vehicle, the difference in distance between the external vehicle and the LED illumination, and the proximity state information of the external vehicle including the traffic amount.

For example, when the distance between the external vehicle and the microwave device is less than a specific distance or the distance between the external vehicle and the LED illumination is less than a specific distance, the lighting control unit 108 lights the LED lighting installed in the direction in which the external vehicle travels . As another example, the lighting control unit 108 lights up a plurality of LED lights installed in the direction in which the external vehicle advances, at a vehicle speed value of the external vehicle, specifically, in a direction in which the external vehicle proceeds. In addition, the lighting control unit 108 may turn on or off the LED lighting according to a predetermined time of arrival of the external vehicle.

5 is a block diagram of the central control device 200 of FIG. 3 according to the second embodiment of the present invention and includes a traffic information receiving unit 209, a lighting control information unit 203, and a lighting control unit 208 The central control device 200 will be described with reference to Fig.

The traffic information receiving unit 209 receives the traffic information including the vehicle detection, the average speed of the moving vehicle during a specific time, the vehicle speed value of the specific vehicle, the lane information and the traffic volume from the traffic information collector 20, The traffic information may be stored in the illumination control information unit 203. [

Also, according to the embodiment, the traffic information receiving unit 209 may receive the vibration information from the vibration measuring device and calculate the traffic information.

The lighting control information unit 203 stores in advance the luminance control value reference information according to the traffic amount for each time period and the luminance control value reference information according to the traffic amount for each day as lighting control information. FIG. 10 shows an example of the luminance control value reference information according to the traffic amount per time period.

According to the embodiment, the illumination control information unit 203 may store the traffic information received by the traffic information receiving unit 209, and may update the illumination control information by analyzing the pattern of the accumulated traffic information.

The illumination control unit 208 controls the LED illumination 10 using the illumination control information stored in the illumination control information unit 203 or the traffic information received from the traffic information reception unit 209.

Hereinafter, examples in which the lighting control units 108 and 208 control the LED lighting 10 can be variously modified and modified, so that the present invention can be applied to all the embodiments including the first embodiment and the second embodiment.

First, when the control of the LED lighting 10 is constant and the control of the specific LED lighting 10 is constant and the variation pattern of the traffic amount by the time of day and the day / time is constant, the lighting control part 108, And controls the LED illumination 10 using the control information. For example, the brightness of the LED illumination 10 is controlled to 60% in the time zone 23-24 shown in FIG.

Secondly, the lighting control units 108 and 208 control the LED lighting 10 using the traffic information in a section and a time zone in which the traffic volume is small and the vehicle traffic is intermittently generated.

For example, the time zone from 03 to 06 shown in FIG. 10 basically guarantees a luminance of 10%, and the lighting controllers 180 and 208 control the brightness of the LED lighting 10 to 10 % To 40%.

If the traffic volume is normal, the lighting controls 108 and 208 control the LED lighting 10 in the first or second way mentioned above.

In addition, after detecting the first vehicle, which is the first vehicle entering the illumination section, and controlling the LED illumination 10, the illumination control sections 108 and 208 calculate the expected end passage passing time of the illumination section of the first vehicle, And changes the brightness of the LED illumination 10 to the basic brightness of the illumination control information or changes the brightness of the LED illumination 10 to the default brightness of the illumination control information after the expected time of passing the end point of the illumination section of the first vehicle.

If the traffic information includes information that senses the second vehicle, which is another vehicle entering the illumination section, before the end point passing time of the illumination section of the first vehicle, the illumination control sections 108 and 208 use the traffic information Thereby controlling the LED lighting 10.

For example, the lighting control units 108 and 208 calculate the estimated time of passing the end point of the illumination section of the first vehicle and the second vehicle using the traffic information, calculate the estimated time when the vehicle does not exist in the illumination period, Can be turned off or the brightness of the LED illumination 10 can be changed to the basic brightness.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. .

FIG. 6 is a flowchart illustrating a method of controlling LED lighting using a vehicle speed value of an LED lighting control system according to an embodiment of the present invention. Referring to FIG. 4, using a vehicle speed value calculated using a luminance pattern, An example of a method of controlling the LED illumination will be described.

The vehicle is detected by the light intensity measured by the light receiving element (S101). For example, the light receiving element measures the external brightness of the LED illumination 10 to sense the vehicle.

The vehicle speed value is calculated using the luminance pattern of the luminance information, specifically, the vehicle speed value is calculated by digitizing a change in luminance within a predetermined time (S103).

The LED lighting 10 is turned on by using the vehicle speed value (S105). According to the embodiment, the brightness of the LED illumination 10 changes gradually, increasing or decreasing, without abruptly changing using the measured brightness.

Also, the plurality of LED lights 10 are turned on and off in groups and above at a speed higher than the vehicle speed value, and at least a predetermined distance (for example, 5 meters) is secured in the traveling direction of the vehicle. For example, the vehicle speed value is calculated as a time at which the vehicle is expected to arrive at a predetermined distance from the LED lighting in the direction opposite to the vehicle traveling direction, and the LED lighting is turned on at the expected arrival time.

FIG. 7 is a flowchart illustrating a method of controlling LED lighting according to lane information of an LED lighting control system according to an embodiment of the present invention. Referring to FIG. 5, An example of a method of controlling illumination will be described.

The vehicle is detected by the light intensity measured by the light receiving element (S201).

The lane information is calculated using the light intensity distribution obtained by quantifying the distribution of the light intensity at the time of vehicle detection of the light intensity information (S203). The light intensity distribution is divided into the number of lanes and a lane corresponding to the region having the maximum value in the light intensity distribution is calculated. According to the embodiment, the lane information calculation unit may calculate the lane by using the luminous intensity pattern and the luminous intensity distribution. The luminous intensity distribution is divided into the number of lanes, Calculate the lane.

The luminance of the LED illumination 10 is controlled using lane information (S205). For example, as the lane information moves further away from the LED lighting 10, the brightness of the LED lighting increases to a pre-determined level (e.g., a 10% increase per lane).

FIG. 8 is a flowchart of a LED lighting control method corresponding to the amount of traffic in the LED lighting control system according to the embodiment of the present invention. Referring to FIG. 6, the traffic light amount calculated using the light- A method of controlling the LED illumination 10 will be described.

The vehicle is detected by the light intensity measured by the light receiving element (S301).

The traffic volume is calculated using the light intensity pattern and the light intensity distribution (S303). For example, the light intensity distribution is divided into the number of lanes, and the light intensity pattern of each lane is accumulated for the predetermined time to calculate the traffic volume.

According to the embodiment, the traffic volume can be calculated (not shown) by using the brightness information and the vibration information. The light intensity distribution is divided into the number of lanes, and the brightness pattern of each lane is accumulated for a preset time, And the traffic volume can be calculated using the preliminary traffic volume and vibration information.

Furthermore? According to the embodiment, the traffic volume can be calculated using the luminance information and the proximity state information of the external vehicle (not shown).

The LED lighting 10 is turned on or off or the brightness of the LED lighting 10 is controlled using the calculated traffic amount (S305). For example, the luminance control value according to the amount of traffic for each time period is defined in advance, and the luminance according to the calculated traffic amount is extracted to control the luminance of the LED lighting 10. An example of the luminance control value according to the amount of traffic by time is shown in FIG.

9 is a flowchart of a control method of controlling LED lighting using traffic information in an LED lighting control system according to a second embodiment of the present invention. 10).

Traffic information is collected (S401). The collected traffic information may be stored, and the accumulated traffic information may be analyzed to update the lighting control information.

The estimated time when the vehicle is not in the illumination section is calculated using the traffic information (S403). Specifically, the estimated time of passing the end point of the illumination section of the first vehicle is calculated using the vehicle speed value of the first vehicle that first enters the illumination section using the traffic information. If the traffic information includes information that senses the second vehicle, which is another vehicle entering the lighting section, before the end point passing time of the lighting section of the first vehicle, 2 Calculated using the vehicle speed value of the vehicle.

The LED illumination 10 is turned off or the brightness of the LED illumination 10 is changed from the expected time when no vehicle is present in the illumination section to the basic brightness (S405).

FIG. 10 is a table of brightness control value tables according to time-based traffic volume according to an embodiment of the present invention, and is information previously stored in the illumination control information units 103 and 203 provided in the central control devices 100 and 200. FIG.

FIG. 11 is a graph illustrating luminance control values according to time-based traffic volume according to an embodiment of the present invention, with reference to the reference table of FIG.

The present invention is not limited to the above-described specific embodiments, and various modifications and changes may be made without departing from the gist of the present invention. It is to be understood that such variations and modifications are intended to be included in the scope of the appended claims.

10: LED lighting 20: Traffic information collector
100, 200: central control device 103, 203: illumination control information section
104: Receiving unit 105: Vehicle speed value calculating unit
106: lane information calculation unit 107: traffic lane calculation unit
108, 208: Lighting control unit 209: Traffic information reception unit

Claims (12)

1. An LED lighting control system including a plurality of LED lights and a central control device for illuminating the vehicle traveling direction,
A LED lighting unit that includes a light receiving element and senses the vehicle by the luminous intensity measured by the light receiving element and transmits luminous intensity information of the luminous intensity measured from a moment when the vehicle is sensed to the central control unit; And
And a central control device for controlling the plurality of LED lights using the brightness information received from the LED lighting. The method according to claim 1,
Wherein the central control device calculates a vehicle speed value using the luminous intensity pattern of the luminous intensity information, and illuminates the plurality of LED lights using the vehicle speed value. The method according to claim 1,
Wherein the central control unit calculates lane information using the luminous intensity distribution of the luminous intensity information, and controls the brightness of the plurality of LED luminaires by using the lane information. The method according to claim 1,
Wherein the central control unit calculates the traffic volume using the brightness information, and controls the plurality of LED lights using the traffic volume. 5. The method of claim 4,
And a vibration measuring device for measuring the vibration information and transmitting the vibration information to the central control device,
Wherein the central control unit calculates the traffic volume using the brightness information and the vibration information, and controls the LED lights using the traffic volume. The method according to claim 1,
When the detection signal is reflected and received by an external vehicle after transmitting a detection signal including specific information, a proximity of an external vehicle determined based on a difference between the frequency of the transmitted detection signal and the frequency of the received detection signal And a microwave device for transmitting status information to the central control device,
And the central control device controls the plurality of LED lights using the brightness information and the proximity state information of the external vehicle. A control method of a system for controlling a plurality of LED lights having a light receiving element and illuminating in a vehicle traveling direction,
(a) detecting the vehicle by the light intensity measured by the light receiving element; And
(b) controlling the plurality of LED lights using brightness information obtained by measuring luminosity for a predetermined time from a moment when the vehicle is sensed. 8. The method of claim 7,
(c) calculating a vehicle speed value of the vehicle using a luminance pattern of the luminance information; And
(d) illuminating the plurality of LED lights using the vehicle speed value. 8. The method of claim 7,
(e) calculating lane information of the vehicle using the luminous intensity distribution of the luminous intensity information; And
(f) controlling the brightness of the plurality of LED lights using the lane information. 8. The method of claim 7,
(g) calculating a traffic volume using the brightness information; And
(h) controlling the plurality of LED lights using the traffic volume. 11. The method of claim 10,
(i) measuring vibration information; And
(j) calculating a traffic volume using the brightness information and the vibration information. 8. The method of claim 7,
Transmitting a sensing signal including specific information;
Determining the proximity state information of the external vehicle based on the difference between the frequency of the transmitted sensing signal and the frequency of the received sensing signal when the sensing signal is reflected and received from an external vehicle;
And controlling the plurality of LED lights using the brightness information and the proximity state information of the external vehicle.

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