KR20140078094A - Intelligent controlloing method and the system of traffic signal and sensor array - Google Patents

Abstract

The present invention has a purpose of identifying a vehicle, efficiently managing a traffic flow by converting a signal system according to the identification, and preventing crime by providing a vehicle number. In order to achieve the purpose, in an intelligent traffic signal control method of the present invention, an intelligent signal mode is performed when a sensor senses a vehicle, vehicle information is obtained and transmitted to a traffic managing system. When the sensor does not sense the vehicle, a pedestrian signal mode is performed. In the intelligent signal mode, a vehicle proceeding signal of vehicle traffic lights is first turned on for a vehicle that has entered first. In the pedestrian mode, all crosswalk traffic lights are turned on as a proceeding signal and all vehicle traffic lights are turned on as a stop signal. According to the present invention, a vehicle of a tax evader or a vehicle used in crime can be determined by recognizing a vehicle number of the detected vehicle and transmitting the same to the traffic management system, thereby preventing crime and promoting a law-abiding mind.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an intelligent traffic signal control method and system,

The present invention relates to an intelligent traffic signal control method and system for acquiring vehicle information and providing it to an external traffic control system when a sensor detects a vehicle before and after an intersection.

The present invention relates to an intelligent traffic signal control method and system capable of operating an efficient traffic signal system by detecting the congestion when the vehicle is stalled at an intersection and controlling the lighting time of the traffic light flexibly according to the situation.

In the modern automobile culture, which has one car per household, the number of cars is limited, while the amount of cars is increasing exponentially. In spite of this situation, the current traffic signal system is operated in accordance with a predetermined signal cycle in most days and operated as a yellow flashing signal at night, which is very inefficient.

In other words, under the present traffic signal system, even if the vehicle is stagnant and green signal is intentionally entered, if the oncoming ahead car is a large car, it does not know the traffic situation ahead of the traffic light, As a result of this traffic congestion, the cost of logistics increased and the traffic speed of the city center decreased.

In the conventional intersection traffic system, the signals are changed after a predetermined time, so they are frequently stopped at the center of the intersection, which causes a serious bottleneck, which may lead to an accident. These problems were even more serious at the time of the expected commute.

In order to solve the above problem at a certain point, the "Vehicle automatic detection traffic signal control method" of Patent Registration No. 10-0535378 suggests a method of automatically detecting the vehicle using the sensor and changing the signal accordingly, Instead of changing the time at which the signal is turned on according to the number of stagnant vehicles, only a method of detecting the presence or absence of the vehicle and changing the signal to the main road or the subway is presented.

On the other hand, some taxpayers, despite their ability to pay taxes, have been driving around with their lapses, and even criminals were able to roam freely as long as they did not get caught in the stolen vehicle by the police. That is, in the conventional traffic system, the traffic light was simply controlled for smooth traffic, or simply the traffic situation was shown by CCTV, and actors could not detect delinquents or criminals positively. This resulted in higher delinquency rates and crime rates, wasted police manpower, and weakened the public's sense of compliance with the law.

In order to solve the above-mentioned problem, the present invention provides a vehicle control system for a vehicle, which acquires vehicle information entering an intersection through a sensor before and after a preference and automatically controls a traffic signal mode by automatically switching a traffic signal mode according to the vehicle presence, To the traffic control system of the vehicle.

Another object of the present invention is to provide traffic information including image information to a driver while monitoring and managing traffic conditions at an intersection in real time.

In order to achieve the above-mentioned object, the present invention provides an intelligent traffic signal control method using vehicle information, which carries out an intelligent signal mode in which vehicle information is acquired and transmitted to a traffic control system when a sensor senses a vehicle, The intelligent signal mode first lights up the progress signal of the vehicle signal lamp of the entering vehicle first, the pedestrian signal mode lights all of the pedestrian signal light as the progress signal, and the vehicle signal light Are all turned on by a stop signal. In the pedestrian signal mode, traffic safety can be improved by realizing overspeed prevention and pedestrian priority protection.

The sensor is preferably a laser sensor.

Further, the data of the sensor is segmented into images, and the pedestrian areas of the intersections before and after the intersection are divided for each lane, and the data is sensed up to the speed, so that the intelligent control can be performed using the data. The sensors are preferably installed at each intersection roadway or in the form of a pole in the center of the intersection in a high-rise tower to detect the front and rear of the entire lane.

The vehicle information may be a number of vehicles, a speed of the vehicle, or a vehicle number obtained by interlocking with a surveillance camera.

Further, when the intelligent signal mode is switched to the intelligent signal mode, it is preferable that a surveillance camera of each roadway is operated and photographed, and the photographed image is transmitted to the traffic control system.

It is also desirable to expand and contract the lighting time of the progress signal in accordance with the vehicle number of the vehicle information or the vehicle speed.

According to another aspect of the present invention, there is provided a system for implementing the intelligent traffic signal control method, comprising: a laser sensor for sensing the number of vehicles, the speed of a vehicle or the number of pedestrians on a pedestrian crossing adjacent to a vehicle traffic light or a pedestrian traffic light; A surveillance camera for photographing a vehicle before and after the intersection; An AD converter for converting an analog signal detected by the laser sensor into a digital signal, a timer counting a lighting time of a progress signal or a stop signal of a vehicle signal lamp or a crosswalk signal, a counter counting the number of vehicles, A character recognition unit for recognizing a license plate from the photographed image and acquiring a car number, and a control unit for controlling the vehicle number or the digital video signal to a traffic control system A transceiver for transmitting a traffic light control signal through a wired / wireless network or receiving a traffic light control command from a traffic control system; and a controller for switching between a pedestrian signal mode and an intelligent signal mode and controlling a vehicle signal light or a crosswalk signal, Controls to turn on the surveillance camera in mode only A control box including a control section And receiving a vehicle number or a digital image signal from the control box through a wired / wireless network, or having a monitoring object DB, identifying a delinquent vehicle or a criminal vehicle by collating with the vehicle number, providing traffic information to the driver And a traffic control system for remotely controlling the control box to blink a vehicle signal light or a crosswalk signal light, wherein the intelligent signal mode first lights up the progress signal of the vehicle signal light of the entering vehicle first, And the vehicle signal lamps are all turned on with a stop signal.

The control box may further include an alarm unit that has a monitoring object database and notifies the traffic control system through the transmission / reception unit when the delinquent person's car or crime car is detected against the car number.

In addition, the transceiver unit may transmit the digital video signal only when requested by the traffic control system.

Here, the sensor is preferably a laser sensor having a wide sensing area and excellent in sensing ability regardless of the weather, but an ultrasonic sensor, a microwave sensor, or an infrared sensor is also possible. However, the laser sensor is more useful in the present invention because it can detect from a long distance. Since the sensors are ordinary sensors, detailed description is omitted.

When the intelligent signal mode is switched to the intelligent signal mode, it is preferable that the surveillance camera of each roadway is operated and photographed, and the photographed image is transmitted to an external traffic control system.

According to the present invention, the vehicle is automatically sensed through the sensor, and the lighting time of the traffic light is controlled by switching the signal system according to whether the vehicle is sensed or not, thereby effectively managing the traffic of the vehicle, It is effective.

According to the present invention, the car number of the detected car is recognized and transmitted to the traffic control system, thereby discriminating the delinquent car or the criminal car, thereby preventing the crime and enhancing the awareness of compliance with the law.

In addition, according to the present invention, the traffic information including the real-time traffic situation and the image of the intersection is provided to the traffic control system, and the traffic control system provides the driver with the information of 'congestion', 'smoothness' 100m congestion forward, '' 60km forward speed, 'and' pedestrian signal mode '.

1 is a flowchart showing an intelligent traffic signal control method of the present invention.
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an intelligent traffic signal control method using vehicle information.
3 is a lateral conceptual diagram for explaining an intelligent traffic signal control method using vehicle information according to the present invention.
4 is an overall configuration diagram showing an intelligent traffic signal control system using vehicle information of the present invention.
FIG. 5 is an exemplary diagram for explaining an embodiment in which the intelligent traffic signal control method and system of the present invention is utilized. FIG.
6 is a conceptual diagram illustrating an area sensed by the intelligent traffic signal control method and system of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a flowchart showing an intelligent traffic signal control method of the present invention.

As shown in FIG. 1, when the vehicle does not enter the sensing area, the sensor does not sense the vehicle, so the pedestrian signal mode is performed (S10).

Here, the pedestrian signal mode refers to a mode in which the pedestrian traffic light (120 in FIG. 3) and the traffic light (110 in FIG. 2) are illuminated in green and red, respectively, according to a predetermined time.

More specifically, the pedestrian signal mode is a mode in which all the pedestrian signal lamps 120 are turned on with a green signal (progress signal) because there is no vehicle at an intersection, and the vehicle signal lamp 110 lights all red signals (stop signals) . The pedestrian signal lamp 120 in the pedestrian signal mode may flow for a considerable time.

Preferably, the sensor 100b installed adjacent to the pedestrian crossing signal lamp 120 detects the pedestrian count of the pedestrian crossing and can extend the green signal lighting time of the pedestrian crossing signal lamp 120. [

If the vehicle is detected by the sensor (S20), the mode is switched to the intelligent signal mode (S30). The intelligent signal mode refers to all situations other than the pedestrian signal mode when the vehicle is detected. In the intelligent signal mode, the progress signal of the vehicle signal lamp (110 in Fig. Here, the progress signal may be a two-sided straight line, a two-sided left-turn line, a one-way straight line, a left-turn line, or the like, and this can realize an intelligent traffic signal system of pleasant communication.

If the vehicle is not detected again in the intelligent signal mode (S40), the mode returns to the pedestrian signal mode.

FIG. 2 is a rear view for explaining an intelligent traffic signal control method using vehicle information according to the present invention.

As shown in FIG. 2, a sensor 100a and a surveillance camera 500 are provided adjacent to the vehicle signal lamp 110. [0050] However, it is needless to say that the sensor 100a and the surveillance camera 500 may be installed apart from the vehicle signal lamp 110. And the broken line indicates the sensing area of the sensor 100a. On the other hand, a control box 200 is provided near the pawl 22 supporting the vehicle signal lamp 100. The control box 200 will be described in detail with reference to FIG.

3 is a lateral conceptual diagram for explaining an intelligent traffic signal control method using vehicle information according to the present invention.

As shown in FIG. 3, when the sensor 100a detects the vehicle in the sensing area L, the intelligent signal mode proceeds. In the case of a laser sensor, the detection area L is scanned at a certain angle, and the number of vehicles is estimated by detecting a change in the distance from the reflected light. Preferably, the speed of the vehicle moving in the sensing area L may also be measured.

On the other hand, the sensor 100b installed adjacent to the pedestrian crossing signal lamp 120 may detect the number of pedestrians and extend the lighting time of the green signal in proportion to the number of pedestrians.

Meanwhile, the surveillance camera 500 can simply photograph the road conditions, but also can measure the speed of the vehicle and the like.

4 is an overall configuration diagram showing an intelligent traffic signal control system using vehicle information according to the present invention.

As shown in FIG. 4, the control box 200 includes a counter, a timer, an AD conversion unit, a transmission / reception unit, a control unit, a video signal processing unit, and a character recognition unit. And receives an analog signal from the sensor 100 and a video signal from the surveillance camera 500. Furthermore, the IP address is assigned to each control box 200, so that the accurate position of the control box 200 can be grasped in the traffic control system 400.

On the other hand, in FIG. 4, four monitoring cameras 500a, 500b, 500c and 500d are provided for monitoring the four-direction roadway as a central tower system.

Meanwhile, the control box 200 can communicate with an external traffic control system 400 through a wire / wireless network 300.

The sensor 100 is preferably a laser sensor and can sense the number of vehicles, the speed of the vehicle or the number of pedestrians on a pedestrian crossing adjacent to a vehicle signal light or a pedestrian traffic light.

Hereinafter, the components of the control box 200 will be described in detail.

The AD converter converts an analog signal sensed by the laser sensor into a digital signal.

The timer counts the lighting time of the progress signal or the stop signal of the vehicle signal lamp or the crosswalk signal.

The counter counts the number of vehicles sensed by the sensor 100 or the surveillance camera 500.

The video signal processor converts the video signal captured by the surveillance camera 500 into a usable digital video signal.

The character recognition unit recognizes the license plate from the photographed image and acquires the vehicle number.

Here, the method of recognizing the vehicle number may be various methods. A license plate area extraction method using license plate information, a license plate area extraction method using vertical edge information, a license plate area extraction method using gray level change characteristics, and a license plate area extraction method using a neural network.

The transmission / reception unit transmits the vehicle number or the digital video signal to the traffic control system 400 through the wired / wireless network 300 or receives the traffic light control command from the traffic control system 400. In particular, the transmitting / receiving unit can transmit the digital video signal only when requested by the traffic control system 400, and can transmit only the vehicle number, which is text information, in order to save digital resources.

The control unit switches the mode between the pedestrian signal mode and the intelligent signal mode and controls the vehicle signal lamp or the crosswalk signal to be turned on according to the lighting time or to turn on the surveillance camera 500 only in the intelligent signal mode.

Meanwhile, the traffic control system 400 can exchange various data with the control box 200. That is, the control box 200 receives a vehicle number or a digital video signal from the control box 200 through the wired / wireless network 300, identifies a delinquent vehicle or a criminal vehicle by providing a monitoring DB, Or controls the control box 200 remotely so as to blink the vehicle signal lamp 110 or the pedestrian traffic signal lamp 120.

Here, the intelligent signal mode first lights up the progress signal of the vehicle signal lamp of the entering vehicle first, the pedestrian signal mode lights up all of the pedestrian signal light as the progress signal, and the vehicle signal lamp lights up as a stop signal. Here, the traveling signal of the vehicle signal lamp is generally a green signal and includes a straight-line signal or a sinusoidal signal.

On the other hand, when the mode is switched to the intelligent signal mode, the number of sensed vehicles is calculated, wherein the sensor senses the vehicle between the vehicle stop line (31 in Fig. In the case of a laser sensor, it is possible to detect the presence of a vehicle and the number of vehicles by detecting a distance difference between the case where there is no vehicle and the case where the vehicle is present.

Here, the green signal of the vehicle signal lamp 110 is turned on for a longer time in proportion to the number of vehicles between L to induce smooth communication.

On the other hand, if the surveillance camera 500 is always on, the surveillance camera 500 may be wasted and the life of the camera may be reduced. Therefore, the surveillance camera 500 is preferably turned on only when the surveillance camera 500 is in the intelligent signal mode. That is, only when the vehicle is detected, the image is taken and transmitted to the external traffic control system 400, so that the situation of the congested road can be displayed in real time.

When the sensor 100 detects the vehicle, the AD conversion unit converts the digital signal into a digital signal, and the control unit switches the pedestrian signal mode to the intelligent signal mode. The control unit calculates the lighting time of the progress signal according to the number of sensed vehicles, and the control unit blinks the vehicle signal lamp 110 or the pedestrian-crossing signal lamp 120 according to lighting time. Here, a timer is used for counting the lighting time. Also, the control unit can turn ON / OFF the surveillance camera 500 only in the intelligent signal mode.

On the other hand, by using the laser sensor, the sensor 100 can overcome the disadvantage of the camera recognition failure due to fog and can detect tens of vehicles before and after the intersection.

Meanwhile, the control box 200 may further include an alarm unit having a monitoring object DB and notifying the traffic control system 400 through the transceiver unit when a delinquent person's car or crime car is detected in contrast with the car number.

5 is an exemplary diagram for explaining an embodiment in which the intelligent traffic signal control method and system of the present invention is utilized. A situation in which the criminal's vehicle is tracked through FIG. 5 will be described.

5, when the criminal vehicle enters the sensing area 55 of the sensor 100, the surveillance camera 500 captures an image including the license plate, and the character recognition unit of the control box 200 acquires the car number And transmits it to the traffic control system 400 through the transmission / reception unit. The traffic control system 400 determines whether the vehicle is a criminal's vehicle by collating it with its own surveillance target DB. If the vehicle is a criminal, it searches the IP of the control box 200 to block the vehicle movement and protect the pedestrian The vehicle traffic lights and the pedestrian traffic lights are all turned on in red, and the monitoring camera 500 continuously monitors the vehicle. Then, all the nearby control boxes 200 and the surveillance camera 500 are operated to monitor the criminal vehicle.

Alternatively, the control box 200 may be provided with the monitoring target DB. In this case, the control unit 200 can notify the traffic control system 400 when the alarm box of the control box 200 is a criminal vehicle. In this case, it is preferable that the traffic control system 400 updates the monitoring target DB remotely.

6 is a conceptual diagram illustrating an area sensed by the intelligent traffic signal control method and system of the present invention.

6, the entire area 60 to be detected includes a red line 61 as an effective area for reflecting actual traffic conditions, an orange pedestrian zone 63 as a pedestrian sensing zone in the red line 61, Or a sensor tower 65 equipped with a sensor for sensing the vehicle.

Here, the sensor tower 65 is not installed in a tower shape but can be installed under a signal light to detect an object, and a loop coil (not shown) may be installed before and after the intersection to detect traffic volume and speed.

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 scope of the invention as defined by the appended claims. Will be apparent to those of ordinary skill in the art.

100: sensor 110: vehicle signal light
120: Pedestrian traffic light 200: Control box
300: wired / wireless network 400: traffic control system
500: Surveillance camera

Claims (8)

An intelligent traffic signal control method using vehicle information,
When the sensor detects the vehicle, the intelligent signal mode is performed in which the vehicle information is acquired and transmitted to the traffic control system.
If the sensor does not detect the vehicle, it performs a pedestrian signal mode,
In the intelligent signal mode, first, a progress signal of a vehicle signal lamp of an entering vehicle is turned on first,
Wherein the pedestrian signal mode lights all of the pedestrian traffic lights or the like as a progress signal, and all of the vehicle traffic lights are turned on as a stop signal. The method according to claim 1,
Wherein the sensor is a laser sensor. The method according to claim 1 or 2,
Wherein the vehicle information is a number of vehicles, a speed of the vehicle, or a vehicle number obtained by interlocking with a surveillance camera. The method of claim 3,
Wherein the lighting time of the progress signal is elongated and contracted according to the number of vehicles of the vehicle information or the speed of the vehicle. The method according to claim 1 or 2,
Wherein when the intelligent signal mode is switched to the intelligent signal mode, the surveillance camera of each roadway is operated and photographed, and the photographed image is transmitted to the traffic control system. An intelligent traffic signal control system using vehicle information,
A laser sensor for detecting the number of vehicles, the speed of the vehicle or the number of pedestrians on a pedestrian crossing;
A surveillance camera for photographing a vehicle before and after the intersection;
An AD converter for converting an analog signal detected by the laser sensor into a digital signal,
A timer for counting the lighting time of a progress signal or a stop signal of a vehicle signal lamp or a pedestrian crossing signal,
A counter for counting the number of vehicles,
A video signal processor for converting a video signal photographed by the surveillance camera into a usable digital video signal,
A character recognition unit for recognizing the license plate from the photographed image and acquiring the license number,
A transmission / reception unit for transmitting the vehicle number or the digital video signal to the traffic control system through a wired / wireless network or receiving a traffic light control command from the traffic control system;
A control box for switching between a pedestrian signal mode and an intelligent signal mode and controlling a vehicle signal light or a pedestrian signal light to be turned on according to a lighting time or to turn on a surveillance camera only in an intelligent signal mode; And
A vehicle number or a digital image signal is received from the control box through a wired / wireless network, or a monitoring target DB is provided, and the vehicle identification number is compared with the vehicle number to identify a delinquent vehicle or a criminal vehicle, And a traffic control system controlling the control box to blink a vehicle signal light or a crosswalk signal light,
In the intelligent signal mode, first, a progress signal of a vehicle signal lamp of an entering vehicle is turned on first,
Wherein the pedestrian signal mode lights all of the pedestrian traffic lights and the like as a progress signal, and all of the vehicle traffic lights are turned on as a stop signal. The method of claim 6,
The control box further includes a monitoring target DB and an alarm unit,
Wherein the warning unit detects the delinquent person's vehicle or crime vehicle by collating the vehicle number with the monitoring target DB, and notifies the traffic control system through the transceiver unit. The method according to claim 6 or 7,
Wherein the transceiver transmits the digital video signal only when requested by the traffic control system.

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