KR101496717B1 - Lighting system and method based on location and speed of vehicle - Google Patents

Abstract

Since the present invention illuminates a suitable number of street lamps based on the position and speed of the vehicle traveling in the sensing area S, it is possible to effectively reduce the energy consumption while increasing the illumination efficiency, S), it senses the location and speed of the detected vehicle in real time, and then lights and flashes the street lamp according to the detected position and speed. Therefore, even if an unexpected situation such as a traffic accident or bottleneck occurs, the street lamps are continuously lit And more particularly, to a position and speed-based street lighting system and method capable of efficiently providing services.

Description

Technical Field The present invention relates to a position and speed based street lamp lighting system and method,

The present invention relates to a position and speed based street lamp lighting system and method. More specifically, the present invention relates to a position and speed based street lamp lighting system and method, in which the number of street lamps to be lit, And to provide a position and speed based street lamp lighting system and method that can provide an appropriate illumination field according to vehicle speed while reducing energy consumption.

Street lights emit light at night with low light intensity, ensuring the visibility of vehicles and pedestrians, thus inducing safe walking of vehicles and pedestrians.

Normally, street lights are lit and blinked by a timer method, an illuminance sensor (CDS) method and a GPS method. At this time, the timer method is defined as a method of lighting and flickering the street lights collectively according to the lighting and blinking time determined by the control station, and the light intensity sensor (CDS) The GPS (Global Positioning System) method is based on the GPS to detect the latitude and longitude of the street lamp installed, and then detects the position of the sun according to the date and time, And it is defined as a method of lighting and flashing the street lamp according to the amount of light.

However, such a conventional street light lighting method is an important factor for generating excessive energy consumption because the street light is lit regardless of the presence or absence of a vehicle. This energy consumption rate is further increased when a conventional street light lighting scheme is applied to a road with a small number of flow vehicles.

In order to overcome such a problem, various studies have been made on a street lighting system for lighting a street lamp when a vehicle is detected within a preset sensing area, and for reducing energy consumption by blinking a street lamp when a vehicle enters the sensing area.

In Korean Patent Laid-Open Publication No. 10-2012-0069199 (entitled "Standalone Street Lighting Control System and Method"), street lamps are lit according to the movement of a vehicle, and lighting control information is transmitted to adjacent street lamps to reduce energy consumption. However, such a streetlight lighting system has a limitation that the streetlight is turned on regardless of the speed of the vehicle because the streetlight is sequentially turned on only when the vehicle is entering or exiting the vehicle. For example, when a vehicle travels at a speed of 100 km / h on a road with a distance of 100 m and a distance of 50 m between the street lamps, the vehicle passes 50 m, which is the distance between the street lamps, within 1.8 seconds. However, since the time required for the vehicle to travel 50 m when the vehicle travels at 50 km / h is 3.6 seconds, it is effective to increase energy efficiency by making the sequential lighting of the street lamps slow.

That is, it is possible to accurately detect the vehicle position and the speed in the streetlight lighting system, and suitably turn on and off the streetlight according to the vehicle position and speed, thereby maximizing the energy efficiency.

In addition, since the streetlight lighting system disclosed in Korean Patent Laid-Open No. 10-2012-0069199 does not detect the precise position of the vehicle but detects the vehicles entering the sensing area, the streetlights are sequentially turned on, When a vehicle bottleneck occurs or an unexpected situation such as a stagnation of the vehicle occurs due to an external factor in the detection area, it is not recognized and the street lamp has a limit of lighting and blinking.

In Korean Patent No. 10-1001013 (entitled " Interlocking method for lighting a street light using a wireless signal "), sensors are provided for sensing a vehicle running on each of the streetlights, The present invention relates to a method of lighting a street lamp that reduces energy consumption while securing a wide field of view depending on the position of a vehicle by illuminating the street lamp by interlocking the street lamp. However, since the sensor for sensing the vehicle must be installed for each street lamp The installation and maintenance costs are excessively increased, and the street lamps are turned on without considering the speed of the street lamp, so that the illumination efficiency can not be maximized.

In this way, it is urgently required to study a streetlight lighting system that can maximize energy efficiency and lighting efficiency by lighting and flashing the streetlight corresponding to the detected position and speed after detecting the accurate position and speed of the vehicle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a control apparatus for a vehicle, which detects a precise position, a traveling direction and a speed of a vehicle traveling in a predetermined sensing area, And to provide a position and speed-based street lighting system and method capable of maximizing energy efficiency and securing the field of view of a driver of a vehicle.

Another object of the present invention is to provide a position and speed-based street lighting system and method which further increases energy efficiency by tracking the position of the vehicle and flashing the street light passing through the street lamp in the direction of travel of the vehicle.

According to the present invention having the above-mentioned problems and solutions, there are provided streetlights installed at intervals in a predetermined section S of a road, a radar unit for transmitting and receiving a radar to and from the section S, Wherein the controller is configured to store a reference table in which a distance to be secured to the driver is matched with a distance between the adjacent street lamps and a vehicle speed, ; A data detector for analyzing a radar signal transmitted from the radar device and detecting a position, a traveling direction and a speed of the vehicle traveling in the section S; The speed of the detected vehicle detected by the data detector is substituted into the reference table to detect a visual distance to be secured to the driver, and the detected visual distance is divided by the distance to be lighted corresponding to the vehicle speed of the sensed vehicle A lighted street lamp detecting unit for detecting the number of street lamps to be lit up and determining the street lamps up to the number of street lamps to be uniformed detected from the street lamps after the current position of the sensing vehicle as lighting streetlights; A trajectory tracking module that tracks the position of the detected vehicle detected by the data detector and tracks the trajectory of the detected vehicle using the position of the detected vehicle; A comparing module which compares the detected vehicle with a predetermined one of the lighting lamps detected by the lighting lamp detecting unit and a comparator module that compares the detected vehicle with the detected vehicle lamp when the detected vehicle passes through any of the lit lamps, An inter-vehicle distance calculating module for calculating an inter-vehicle distance that is the distance of the next vehicle following the vehicle from the vehicle closest to the vehicle, and an inter-vehicle distance calculated by the inter-vehicle distance calculating module, When the detected vehicle distance is equal to or larger than the visual range to be ensured for the following vehicle, A blinking streetlight detection unit including a determination module for determining a blinking streetlight that is a streetlight to be destroyed; And a data transmission / reception unit for transmitting lighting instruction data to the lighting streetlights detected by the lighting streetlight detection unit and flashing data to the flashing streetlight detected by the flashing streetlight detection unit.

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According to another aspect of the present invention, there is provided a radar system comprising: a radar transmission / reception step of transmitting / receiving a radar to a predetermined section S of a road; A data detecting step of detecting a position, a traveling direction, and a speed of the detected vehicle by analyzing the radar signal applied to the radar transmitting and receiving step; A preliminary streetlight detecting step of detecting a preliminary streetlight, which is the streetlights installed after the position of the sensing vehicle along the traveling direction of the sensing vehicle; A visual distance detection step of detecting a visual distance to be secured for the detected vehicle by substituting the velocity of the detected vehicle detected by the data detection step into a reference table matched with a visual distance to be secured for each vehicle speed; A street lamp quantity detecting step of detecting a quantity of street lamps to be lit up by dividing the visual distance detected by the visual range detecting step by a distance between adjacent predetermined street lamps; A lighted street light determining step of determining, of the preliminary streetlights detected by the preliminary streetlight detecting step, a street light corresponding to the quantity detected by the street light quantity detecting step along the running direction as a street light to be lit; A lighting step of lighting the streetlights determined by the lighting street lighting decision step; Determining a blinking street light determining step to follow the position of the sensing vehicle after the lighting step and to determine that the street light passed when the sensing vehicle passes through one of the lit streets; An inter-vehicle distance calculating step of calculating the inter-vehicle distance, which is the distance of the next vehicle from the sensing vehicle and the sensing vehicle that is closest to the sensing vehicle; A comparison step of comparing the headway distance calculated by the headway distance calculation step with a view distance to be secured of the following vehicle; Determining that the streetlight determined by the flickering streetlight determining step is to be blinked when the inter-vehicle distance is equal to or greater than the viewable distance to be secured by the next vehicle by the comparing step, and then proceeding with the blinking step; And a blinking step of blinking a street light determined as a streetlight to be blinked by the determining step.

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According to the present invention having the above-mentioned problems and solutions, since a suitable number of street lamps are turned on based on the position and speed of the vehicle traveling in the sensing area S, the lighting efficiency can be increased and the energy consumption can be effectively reduced .

In addition, according to the present invention, the position and speed of the sensing vehicle traveling in the sensing area S are detected in real time using the radar signal, and the street lamps are turned on and off according to the sensed position and speed. Even if the same inconvenient situation occurs, the street lamps can be continuously lit to provide efficient lighting service.

In addition, according to the present invention, the position of the vehicle can be tracked and the streetlight is blinked after the vehicle passes through the streetlight, thereby further enhancing the energy efficiency.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram of a streetlight lighting system according to an embodiment of the present invention; FIG.
Fig. 2 is an exemplary view of Fig. 1. Fig.
3 is a block diagram showing the controller of Fig.
FIG. 4 is an exemplary view for explaining a view distance reference table applied to FIG. 3. FIG.
5 is a block diagram showing the lighting street lamp detecting unit of Fig.
6 is a flowchart illustrating an operation procedure of a streetlight lighting system according to an embodiment of the present invention.
FIG. 7 is a flowchart showing the blinking step of FIG. 6;

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a schematic view showing a streetlight lighting system according to an embodiment of the present invention, and Fig. 2 is an illustration of Fig. 1. Fig.

The streetlight lighting system 1 of FIGS. 1 and 2 includes a radar device 5 for transmitting and receiving a radar to a predetermined sensing area S and a street light 7 1), ..., (7-N) and the radar unit 5 and the streetlights 7-1, ..., 7-N, (7-N) on the basis of the detected position and speed after detecting the position and speed of the vehicle traveling in the detection area S by analyzing the received radar signal And a controller 3 for controlling the blinking of the vehicle and a wired / wireless communication network for providing a data signal movement path between the radar device 5, the streetlights 7-1, ..., 7-N, (8).

Although not shown in the drawings, the streetlights 7-1, ..., 7-N include light source elements that emit light and streetlight controllers that transmit and receive data signals to and from the controller 3. [

The radar device 5 is a device that receives a reflected signal after transmitting a radar to a predetermined sensing area S and transmits the radar signal transmitted and received in real time to the controller 3.

Further, the radar device 5 transmits and receives the radar radially on the basis of the installation position. Specifically, when the detection distance is 1 km, the detection area is 2 km based on the installation position.

The street lamps 7-1, ..., 7-N are installed on both sides of the road at intervals in the running direction of the vehicle, and when the lighting signal is received from the controller 3, And emits light. At this time, the light source element is preferably an LED.

Further, the streetlights 7-1, ..., 7-N flicker the light source elements when they receive the flashing signal from the controller 3. [

At this time, it is preferable that the streetlights 7-1, ..., 7-N are spaced apart from each other by a distance shorter than a half of the illumination distance so as not to interfere with the driver's field of view.

3 is a block diagram showing the controller of Fig.

3 includes a database unit 32 for storing data and a data transmission / reception unit for transmitting / receiving data to / from the external devices 5, 7-1, ..., 7-N A data detecting section 35 for analyzing the radar signal transmitted from the radar device 5 via the data transmitting and receiving section 33 to detect the position, (7-N), and compares the speed of the detected vehicle with predetermined thresholds TH (TH) to determine whether or not the detected vehicle is lighted A position detecting unit 37 for detecting the position of the detected vehicle in real time and comparing the position information of the detected vehicle with the position information of the lighting lamps detected by the lighting lamp detecting unit 37 in real time, Blinking light that determines the flashing of the streetlight when the vehicle passes the lit street light It comprises a portion (39) and these control target 32, 33, 35, 37, a controller 31 for controlling (39).

The control unit 31 is an OS (Operating System) of the controller 3 and manages and controls the controlled objects 32, 33, 35, 37, and 39.

The control unit 31 periodically searches the data transmitting and receiving unit 33 for crawling to see whether a radar signal has been received from the radar device 5. When the radar signal is received, ).

The control unit 31 also inputs detected data to the lighting street lighting detector 37 and the blinking street lighting detection unit 39 when the data detecting unit 35 detects the position, running direction and speed of the detected vehicle.

Further, the control unit 31 transmits the lighting command data to the street lamps to be turned on, which are determined by the lighting street lamp detecting unit 37.

Further, the control unit 31 transmits the flashing command data to the street lamps to be flickered, which are determined by the flashing streetlight detecting unit 39.

The database section 32 stores the location information of each of the street lamps 7-1, ..., 7-N and the identification information of each of the street lamps 7-1, ..., And the position information of the preset sensing area S are stored.

In addition, the visual field distance reference table is stored in the database unit 32, which is data in which the visual distance information to be secured for each vehicle speed and the illumination distance of the streetlight is matched.

FIG. 4 is an exemplary view for explaining a view distance reference table applied to FIG. 3. FIG.

When the distance between the street lamps 7-1, ..., 7-N is 50 m and the illumination distance of each of the street lamps 7-1, ..., 7-N is 100 m, (C) travels at a speed of 50 km / h, the vehicle (C) travels at 100 m at 7.2 seconds. However, when the car C travels at a speed of 100 km / h, The streetlight alone can not ensure the driver's field of view.

That is, the view distance to be secured to the driver in proportion to the speed of the vehicle C is also increased.

As described above, the visual range reference table applied to the present invention stores and stores the visual range of the driver to be secured for each vehicle speed.

The data detector 35 analyzes the input radar signal under the control of the controller 31 to detect the position, running direction and speed of the detected vehicle C. At this time, a method and a process for detecting the position, running direction, and velocity of the sensing object based on the radar signal are commonly used in a radar system, and thus a detailed description thereof will be omitted.

The position, running direction, and speed information of the detected vehicle detected by the data detecting unit 35 are input to the lit street lamp detecting unit and the blinking time determining unit under the control of the controller 31. [

The lighted street lamp detecting unit 37 matches the position of the input sensed vehicle with the position information of the streetlights 7-1, ..., 7-N, Detects installed streetlights 7-1, ..., 7-N (hereinafter referred to as spare streetlights).

The lighting street lamp detector 37 also substitutes the input speed information of the sensed vehicle into the visual distance reference table stored in the database 32 to detect the visual distance corresponding to the speed.

The lighting streetlight detection unit 37 also divides the detected sight distance by the separation distance of the streetlights to determine the number of streetlights to be lit.

Also, the lighting street lamp detecting unit 37 detects the identification key value of the street lamps (hereinafter, referred to as lit street lights) and the lit street lamps to be lit based on the detected preliminary street lamps and the determined number of street lamps.

5 is a block diagram showing the lighting street lamp detecting unit of Fig.

The blinking street lamp detecting unit 39 of FIG. 5 includes a trajectory tracking module 391 for tracking the trajectory of the detected vehicle based on the position of the detected vehicle detected by the data detecting unit in real time, and a trajectory tracking module 391 A comparing module 393 for comparing whether the detected vehicle passes through any of the lit street lights detected by the lit street lamp detecting unit 37 based on the detected locus, An inter-vehicle distance calculation module 395 for calculating an inter-vehicle distance that is a distance between the detection vehicle and the following vehicle that is closest to the detection vehicle at the time of passing through any one of the inter-vehicle distance calculation module 395 Comparing the calculated inter-vehicle distance with a viewable distance to be secured by the succeeding vehicle, and when the inter-vehicle distance is not less than the viewable distance to be secured by the succeeding vehicle, LED lights (referred to, street lights flashing hereinafter) to be flashing comprises a determining module 397 for determining the.

At this time, if the blinking streetlight is detected by the determination module 397, the control unit 31 transmits the blinking command data to the detected blinking streetlights.

6 is a flowchart illustrating an operation procedure of a streetlight lighting system according to an embodiment of the present invention.

The streetlight lighting system 1 includes a radar transmission / reception step S10 for transmitting / receiving a radar signal to / from a predetermined sensing area S and a radar signal reception / reception step S10 for sensing a radar signal transmitted / A data detection step (S20) of detecting a position, a traveling direction and a speed of the sensing vehicle; a step of detecting the position and direction of the sensing vehicle detected by the data detection step (S20) A preliminary streetlight detection step (S30) for detecting a preliminary streetlight installed thereafter, and a visual distance to be secured to the detected vehicle by substituting the velocity of the detected vehicle detected by the data detection step (S20) (S40) of detecting the distance to be detected, and the visual distance detected by the visual distance detecting step (S40) by the distance between the streetlights, A lighting lamp determining step S60 for determining a lighting lamp according to the quantity detected by the number of lamps detected in step S50, a lighting lamp determining step S60 And a blinking step S80 for tracking the position of the detected vehicle and blinking the corresponding street lamp when the detected vehicle passes through the lit street lamp.

FIG. 7 is a flowchart showing the blinking step of FIG. 6;

The flashing step S80 of FIG. 7 includes a tracking step S110 of tracking the position of the sensing vehicle and tracking whether the sensing vehicle passes through the lighting streetlights detected by the lighting street lighting determining step S60, An inter-vehicle distance calculation step (S120) of proceeding when it is determined that the detected vehicle passes through any one of the lit streetlights by the step S110 and calculating the inter-vehicle distance of the next vehicle following the closest following vehicle from the detected vehicle and the detected vehicle A comparing step S130 of comparing an inter-vehicle distance calculated by the inter-vehicle distance calculating step with an illumination distance to be ensured of the following vehicle, and a comparison step S130 when the inter-vehicle distance is equal to or larger than the view- And a determination step (S140) of determining a street light passing through the detected vehicle by the tracking step (S110) as a blinking street light.

1: Street lamp lighting system 3: Controller
5: Radar machine 7-1, ..., 7-N: Streetlight
8: wired / wireless communication network 31:
32: Database unit 33: Data transmission /
35: data detecting unit 37: lit street light detecting unit
39: Blinking Streetlight Detection

Claims (6)

A controller for analyzing a radar signal transmitted from the radar device to illuminate and blink the street lamps; A streetlight lighting system comprising:
The controller
A database unit in which a reference table in which a distance to be secured to the driver is matched with a distance between adjacent street lamps and a vehicle speed is preset and stored;
A data detector for analyzing a radar signal transmitted from the radar device and detecting a position, a traveling direction and a speed of the vehicle traveling in the section S;
The speed of the detected vehicle detected by the data detector is substituted into the reference table to detect a visual distance to be secured to the driver, and the detected visual distance is divided by the distance to be lighted corresponding to the vehicle speed of the sensed vehicle A lighted street lamp detecting unit for detecting the number of street lamps to be lit up and determining the street lamps up to the number of street lamps to be uniformed detected from the street lamps after the current position of the sensing vehicle as lighting streetlights;
A trajectory tracking module that tracks the position of the detected vehicle detected by the data detector and tracks the trajectory of the detected vehicle using the position of the detected vehicle; A comparing module which compares the detected vehicle and the detected street lamp detected by the lit street lamp detecting unit and compares the detected vehicle with the detected vehicle lamp when the detected vehicle passes through any of the lit street lamps, An inter-vehicle distance calculating module for calculating an inter-vehicle distance that is the distance of the next vehicle following the vehicle from the vehicle closest to the vehicle, and an inter-vehicle distance calculated by the inter-vehicle distance calculating module, When the detected vehicle distance is equal to or larger than the visual range to be ensured for the following vehicle, A blinking streetlight detection unit including a determination module for determining a blinking streetlight that is a streetlight to be destroyed;
And a data transmission / reception unit for transmitting lighting instruction data to the lighting street lamps detected by the lighting street lamp detection unit and flashing data to the flashing streetlight detected by the flashing streetlight detection unit. delete delete A radar transmission / reception step of transmitting / receiving a radar to a predetermined section S of the road;
A data detecting step of detecting a position, a traveling direction, and a speed of the detected vehicle by analyzing the radar signal applied to the radar transmitting and receiving step;
A preliminary streetlight detecting step of detecting a preliminary streetlight, which is the streetlights installed after the position of the sensing vehicle along the traveling direction of the sensing vehicle;
A visual distance detection step of detecting a visual distance to be secured for the detected vehicle by substituting the velocity of the detected vehicle detected by the data detection step into a reference table matched with a visual distance to be secured for each vehicle speed;
A street lamp quantity detecting step of detecting a quantity of street lamps to be lit up by dividing the visual distance detected by the visual range detecting step by a distance between adjacent predetermined street lamps;
A lighted street light determining step of determining, of the preliminary streetlights detected by the preliminary streetlight detecting step, a street light corresponding to the quantity detected by the street light quantity detecting step along the running direction as a street light to be lit;
A lighting step of lighting the streetlights determined by the lighting street lighting decision step;
Determining a blinking street light determining step to follow the position of the sensing vehicle after the lighting step and to determine that the street light passed when the sensing vehicle passes through one of the lighting streetlights;
An inter-vehicle distance calculating step of calculating the inter-vehicle distance, which is the distance of the next vehicle from the sensing vehicle and the sensing vehicle that is closest to the sensing vehicle;
A comparison step of comparing the headway distance calculated by the headway distance calculation step with a view distance to be secured of the following vehicle;
Determining that the streetlight determined by the flickering streetlight determining step is to be blinked when the inter-vehicle distance is equal to or greater than the viewable distance to be secured by the next vehicle by the comparing step, and then proceeding with the blinking step;
And a blinking step of blinking a street light determined as a street light to be blinked by the determining step. delete delete

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