KR20170074076A - Method and system for adaptive traffic signal control - Google Patents
Method and system for adaptive traffic signal controlInfo
- Publication number
- KR20170074076A KR20170074076A KR1020150183131A KR20150183131A KR20170074076A KR 20170074076 A KR20170074076 A KR 20170074076A KR 1020150183131 A KR1020150183131 A KR 1020150183131A KR 20150183131 A KR20150183131 A KR 20150183131A KR 20170074076 A KR20170074076 A KR 20170074076A
- Authority
- KR
- South Korea
- Prior art keywords
- traffic
- traffic signal
- vehicle
- situation information
- server
- Prior art date
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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- G06K9/6256—
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/30—Transportation; Communications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- G06K2209/23—
Abstract
According to an embodiment of the present invention, there is provided an active traffic signal control method including: acquiring traffic situation information in real time from a client device; receiving traffic signal control period information generated by analyzing traffic situation information from a server; And transmitting the signal adjustment period to the traffic signal output unit, wherein the client device is connectable to the server and the traffic signal output unit, the acquired traffic situation information is transmitted to the server, and the server analyzes traffic situation information in real time The traffic signal control period is transmitted from the server to the client device and the traffic signal output unit. The traffic signal output unit variably outputs the traffic signal according to the traffic signal control period. can do.
Description
The present invention relates to an active traffic signal control method and system, and more particularly, to an active traffic signal control method and a traffic signal control method for reducing traffic congestion and smoothly controlling traffic volume by actively changing the waiting time of the same traffic signal according to traffic volume And a system therefor.
Conventional traffic lights have a problem in that the traffic volume can not be controlled effectively because the traffic signal waiting time is always the same even when the traffic suddenly becomes congested, such as a commute time, or when traffic other than the commute time is leisurely. As a result, many people are wasting time on the road due to traffic congestion, and social and national losses from traffic congestion are increasing every year.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an active traffic signal control method and system that actively adjust signal waiting time according to traffic volume.
According to an embodiment of the present invention, there is provided an active traffic signal control method including: acquiring traffic situation information in real time from a client device; receiving traffic signal control period information generated by analyzing traffic situation information from a server; And transmitting the signal adjustment period to the traffic signal output unit, wherein the client device is connectable to the server and the traffic signal output unit, the acquired traffic situation information is transmitted to the server, and the server analyzes traffic situation information in real time The traffic signal control period is transmitted from the server to the client device and the traffic signal output unit. The traffic signal output unit variably outputs the traffic signal according to the traffic signal control period. can do.
In the active traffic signal control method according to an embodiment of the present invention, the analyzed traffic situation information can be broadcasted from a server.
In addition, the step of acquiring traffic situation information in real time may include obtaining a moving image in real time using a camera or acquiring information about the vehicle using an infrared camera.
In the active traffic signal control method according to an embodiment of the present invention, the analysis of the traffic situation information through the server includes a step of detecting the vehicle using the learning image in the moving image, a step of tracking the vehicle using the coordinates of the detected vehicle And detecting the number of tracked vehicles.
The step of detecting the vehicle using the learning image in the moving image may include a step of performing a machine learning through a positive image and a negative image extracted using a sample image And a step of detecting the vehicle by pattern recognition using the .XML file that is output afterwards.
In addition, tracking the vehicle using the detected vehicle coordinates may include tracking the vehicle using the detected vehicle coordinate information and a Kalman filter.
An active traffic signal control system including a server and a client device according to an embodiment of the present invention includes a traffic situation information acquisition unit for acquiring traffic situation information in real time, a server and a client device connectable to the traffic situation information acquisition unit, And a traffic signal output unit connectable with the client. The server includes a traffic situation information analyzing unit for analyzing traffic situation information in real time based on the traffic situation information, and a traffic signal information determining unit for determining a traffic signal control period The traffic signal control period is transmitted from the server to the client device and the traffic signal output unit, and the traffic signal output unit can variably output the traffic signal according to the traffic signal control period.
The active traffic signal control system further includes a traffic situation information transmission unit for broadcasting the analyzed traffic situation information. The traffic situation information transmission unit includes a traffic situation information acquisition unit, a server, a client device, and a traffic signal output unit. Lt; / RTI >
The traffic condition information obtaining unit may include at least one of a camera and an infrared camera for obtaining traffic condition information, and may include a communication unit for transmitting the obtained traffic condition information to the server.
In addition, the traffic situation information analyzing unit may include GPGPU (General Purpose Graphics Processing Unit) for analyzing traffic situation information in real time.
In the active traffic signal control system according to an embodiment of the present invention, the traffic situation information analyzing unit detects a vehicle using a learning image in a moving image, and detects the vehicle number by tracking the vehicle using the coordinates of the detected vehicle can do.
Also, in the active traffic signal control system, detection of a vehicle using a learning image in a moving picture is performed by learning a machine learning through a positive image and a negative image extracted using a sample image, It is possible to detect the vehicle by pattern recognition using the output .XML file.
Also, in the active traffic signal control system, the tracking of the vehicle using the coordinates of the detected vehicle can track the vehicle using the coordinate information of the detected vehicle and the Kalman filter.
Meanwhile, as an embodiment of the present invention, a computer-readable recording medium on which a program for causing the computer to execute the above-described method may be provided.
According to an embodiment of the present invention, the signal conditioning period of the traffic lights can be controlled according to traffic volume so that the same traffic signal waiting time is actively changed according to traffic volume.
Also, according to an embodiment of the present invention, the traffic situation information can be broadcast to the client device, thereby actively coping with traffic conditions on the road.
1 is a diagram schematically illustrating a configuration of an active traffic signal control system according to an embodiment of the present invention.
2 is a block diagram illustrating a configuration of an active traffic signal control system according to an embodiment of the present invention.
3 is a diagram illustrating an active traffic signal control system according to an embodiment of the present invention implemented using Raspberry Pi and Arduino.
4 is a flowchart illustrating an active traffic signal control method according to an embodiment of the present invention.
5 is a flowchart illustrating an active traffic signal control method using a method of detecting a vehicle using a learning image according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.
The terms used in this specification will be briefly described and the present invention will be described in detail.
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.
When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software . In addition, when a part is referred to as being "connected" to another part throughout the specification, it includes not only "directly connected" but also "connected with other part in between".
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
1 is a diagram schematically illustrating a configuration of an active traffic signal control system according to an embodiment of the present invention.
Referring to FIG. 1, a camera installed at an intersection or a road can acquire traffic information in real time on a traffic situation on the road. The acquired traffic information is transmitted to the server through the communication network, and the server analyzes the transmitted information in real time and determines the traffic signal control period using the analyzed traffic information. The determined traffic signal control period is transmitted to the traffic light of the intersection through the communication network, and the traffic signal of the intersection can be actively controlled.
In addition, the real-time traffic information acquired by the camera is transmitted directly to the client devices through the communication network, and each user can use and analyze the real-time traffic information.
2 is a block diagram illustrating a configuration of an active traffic signal control system according to an embodiment of the present invention.
2, an active traffic signal control system according to an exemplary embodiment of the present invention includes a traffic situation
The traffic situation
In addition, the traffic condition
The
The traffic situation
In addition, the traffic situation
The traffic
In the active traffic signal control system according to an embodiment of the present invention, the traffic situation
The traffic
In addition, the active traffic
The traffic situation
3 is a diagram illustrating an active traffic signal control system according to an embodiment of the present invention implemented using Raspberry Pi and Arduino.
FIG. 3A is a block diagram of an active traffic signal control system implemented using RaspberryPipe and Arduino, and FIG. 3B is a block diagram illustrating functions of respective components of the active traffic signal control system. 3C is a diagram illustrating the operation of cameras for minimizing blind spots when detecting traffic volume in a traffic congestion state in a traffic signal control system.
3A and 3B, it is possible to photograph and transmit traffic situation information in real time using a camera and a raspberry pie. Raspberry pie is a single-board computer of the size of a card. It can be photographed by attaching a camera module, and wireless communication is possible by using a dongle. In addition, Raspberry Pie can stream traffic in real time using VLC Streamer.
In order to analyze the traffic situation information, the
In addition, the traffic condition
When the vehicle does not move due to an excessive vehicle stagnation, the entire vehicle on the screen can be detected and counted for a unit time in order to detect the traffic volume. Referring to FIG. 3C, it is possible to search and count all of the vehicles in the overlapping portion (dotted line) of two cameras that photograph each direction. For example, unlike a single camera that shoots in one direction, it can search for the rear view of the opposite lane, minimizing blind spots hidden by large vehicles.
As described above, in the active traffic signal control system, the
Also, the
In addition, the analyzed traffic situation information or captured traffic situation information can be broadcasted or transmitted to the client device so as to be used in real time.
In addition, the
Referring to FIGS. 3A and 3B, Arduino is a device for directly performing signal control, and can be interconnected with a
4 is a flowchart illustrating an active traffic signal control method according to an embodiment of the present invention.
In step S10, in order to actively control the traffic signal, the traffic situation
In step S20, the traffic situation
In step S30, the traffic situation
In step S40, the traffic
In step S50, the traffic
5 is a flowchart illustrating an active traffic signal control method using a method of detecting a vehicle using a learning image according to an embodiment of the present invention.
In step S100, the traffic situation
In step S200, the
In step S300, the traffic situation
In step S400, the traffic situation
In step S500, the traffic situation
In step S600, the traffic situation
In step S700, the
Step S800 is a case where it is determined in step S400 that the traced vehicle passes through a certain reference line for a predetermined period of time and the traffic situation
Next, as described above, in step S600, the traffic situation
The contents of the above-described method can be applied in connection with the apparatus according to an embodiment of the present invention. Therefore, the description of the same contents as those of the above-described method with respect to the apparatus is omitted.
One embodiment of the present invention may also be embodied in the form of a recording medium including instructions executable by a computer, such as program modules, being executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.
It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.
The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
100: traffic situation information obtaining unit
200: server
300: traffic situation information analysis unit
400: Traffic signal control unit
500: Traffic signal output section
600: traffic situation information transmission unit
1000: Active traffic signal control system
Claims (14)
Acquiring traffic situation information in real time at a client device;
Receiving traffic signal control cycle information generated by analyzing the traffic condition information from a server; And
And transmitting the received traffic signal control period to a traffic signal output unit,
Wherein the client device is connectable to the server and the traffic signal output unit, the obtained traffic situation information is transmitted to the server, the server analyzes the traffic situation information in real time, The traffic signal control period is transmitted from the server to the client device and the traffic signal output unit and the traffic signal output unit variably outputs a traffic signal according to the traffic signal control period Wherein the control signal is a control signal.
And the analyzed traffic condition information is broadcast from the server.
Wherein the step of acquiring the traffic condition information in real time includes acquiring a moving picture in real time using a camera or acquiring information about the vehicle using an infrared camera.
The traffic condition information analysis through the server includes detecting a vehicle using the learning image in the moving picture; Tracking the vehicle using the coordinates of the detected vehicle; And detecting the number of the tracked vehicles.
The step of detecting the vehicle using the learning image in the moving picture may include a step of performing machine learning through a positive image and a negative image extracted using a sample image, And detecting the vehicle by pattern recognition using the output .XML file.
Wherein tracking the vehicle using the detected vehicle coordinates comprises:
And tracking the vehicle using coordinate information of the detected vehicle and a Kalman filter.
A traffic situation information acquisition unit for acquiring traffic situation information in real time;
The server and the client device connectable to the traffic situation information acquisition unit; And
And a traffic signal output unit connectable to the server and the client,
A traffic situation information analyzer for analyzing the traffic situation information in real time based on the traffic situation information; And a traffic signal control unit for determining a traffic signal control period based on a result of the analysis, wherein the determined traffic signal control period is transmitted from the server to the client device and the traffic signal output unit,
Wherein the traffic signal output unit variably outputs a traffic signal according to the traffic signal control period.
And a traffic situation information transmission unit for broadcasting the analyzed traffic situation information,
Wherein the traffic situation information transmission unit is connectable with the traffic situation information acquisition unit, the server, the client device, and the traffic signal output unit.
Wherein the traffic condition information obtaining unit includes at least one of a camera and an infrared camera for obtaining the traffic condition information and a communication unit for transmitting the obtained traffic condition information to the server. system.
Wherein the traffic situation information analyzing unit includes a general purpose graphics processing unit (GPGPU) for analyzing traffic situation information in real time.
Wherein the traffic situation information analyzing unit detects a vehicle using a learning image in a moving image and tracks the vehicle using the detected coordinates of the vehicle and detects the number of the traced vehicles.
Detection of a vehicle using a learning image in the moving image is performed by machine learning through a positive image and a negative image extracted using a sample image, And detecting the vehicle by pattern recognition using the file.
Wherein the tracking of the vehicle using the detected coordinates of the vehicle includes tracking the vehicle using coordinate information of the detected vehicle and a Kalman filter.
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