KR100854294B1 - Traffic signal control system communicating with car navigation and device for choosing direction manually - Google Patents

Abstract

The present invention provides a system for optimally controlling traffic signals by navigating wirelessly with a navigation or manual direction selection device attached to a vehicle and organically interworking, and requesting information of a traveling direction from the traffic signal controller to the vehicle. Steps; Automatically responding using the navigation; And manually selecting a moving direction by using the manual direction selection device.

Traffic signal control, navigation, manual direction selection

Description

Traffic signal control system using vehicle navigation and manual direction selector {Traffic signal control system communicating with car navigation and device for choosing direction manually}

1 is a system diagram showing the overall concept of the present invention.

2 is a hardware configuration of the present invention
3 is an operation flowchart according to an embodiment of the present invention.
* Explanation of symbols for the main parts of the drawings *

10: left turn vehicle

20: vehicle going straight

30: box with traffic signal controller

40, 100: Navigation

41: request the direction information to the navigation

42: automatic response of the progress direction information

50, 200: manual direction selector

51: request the direction information to the manual direction selection device

52: manual response of the heading information

60, 300: traffic signal controller

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The present invention relates to a traffic control system that enables the optimal traffic signal control by accurately grasp the direction of travel of vehicles moving or stopping on a specific road.
In order to effectively control traffic signals, it is necessary to know the flow of vehicles, and to know the flow of vehicles, it is necessary to calculate the number of vehicles moving or stationary on the road, which is difficult to identify automatically in most cases. The reality is that a person operates the controller manually around the congestion time zone in front of the traffic signal controller. Recently, there have been attempts to understand the flow of vehicles by installing roof detectors on the road, but they are not technically perfect. Especially, in order to predict the course of a vehicle, it is necessary to rely on the lane and damage the road, so many construction works Inconvenient and expensive.

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In addition, researches using image recognition and RF using cameras have been tried, but since it is a technically beginner stage, the reality is very low.

According to the present invention, when the traffic signal controller approaches the intersection or requests the vehicle direction information wirelessly from the traffic signal controller in order to accurately understand the flow of the vehicle at the intersection, the vehicle equipped with the navigation has already determined the route to the destination. As the status, it extracts the information on the direction from the route database and responds automatically, and the vehicle that is not equipped with navigation selects the direction using a simple manual direction selector that does not have a function such as a route database and has limited functions. By responding later, it is possible to determine the number and direction of vehicles of vehicles entering the intersection to enable optimal traffic signal control.

As shown in FIG. 1, the traffic signal controller 300 of the present invention is installed in a traffic signal controller box 30 at an intersection and is manually operated using an automatic information collection system using a vehicle navigation system 40 and a manual direction selection device 50. It is divided into information collection system.

2 is a system diagram for illustrating the concept of the navigation 100, the manual direction selection device 200, the traffic signal controller 300 according to an embodiment of the present invention.

The navigation 100 constituting the automatic information collection system of FIG. 2 includes a general route database 110 for guiding a route from a departure point to a destination; A navigation unique ID unit 120 to which a unique ID is assigned for each navigation device; A wireless data receiver 130 for receiving a progress direction request from the traffic signal controller 300; A traffic signal controller selection unit 140 for selecting a response target traffic signal controller when a request is simultaneously received from a plurality of adjacent traffic signal controllers; An operation unit 150 for extracting a traveling direction from the path database 110; It characterized in that it comprises a wireless data transmitter 160 for transmitting a progress direction response to the selected traffic signal controller 300.

In addition, the manual direction selection device 200 constituting the manual information collection system in Figure 2 includes a manual direction selection device unique ID unit 210 is given a unique ID for each manual direction selection device; GPS receiver 220 for identifying the current position of the vehicle; A wireless data receiver 230 for receiving a direction request from the traffic signal controller; A traffic signal controller selecting unit 240 for selecting a response target traffic signal controller when a request is simultaneously received from a plurality of adjacent traffic signal controllers; A guide unit 250 for requesting a vehicle travel direction input; An input unit 260 for selecting a vehicle traveling direction; It characterized in that it comprises a wireless data transmitter 270 for transmitting a forward direction response to the traffic signal controller.

In addition, in FIG. 2, the traffic signal controller 300 performing data communication with the navigation apparatus 100 or the manual direction selection apparatus 200 includes a traffic signal controller unique ID unit 310 to which a unique ID is assigned for each traffic signal controller; A wireless data receiver 320 for collecting travel direction information from the navigation device 100 or the manual direction selection device 200; A signal controller 330 for collecting vehicle number and direction information, and controlling a flashing order and a flashing time of the traffic light based on the information; It characterized in that it comprises a wireless data transmission unit 340 for requesting the navigation direction information, including information such as the ID, position coordinates of the traffic signal controller to the navigation 100 or the manual direction selection device 200.

Now, an operation process according to an exemplary embodiment of the present invention will be described in detail with reference to the flowchart of FIG. 3.

3 is a flowchart illustrating a communication process between the traffic signal controller 300 and the navigation device 100 or the traffic signal controller 300 and the manual direction selection device 200 in sequence according to an embodiment of the present invention.

When the vehicle enters the intersection area where the traffic signal controller 300 is installed (500), the traffic signal controller 300 requests the vehicle to proceed with the direction, and the position coordinates of the traffic signal controller 300 and its own position. Data including the unique ID and the like is wirelessly transmitted (510).

The vehicle receiving the request for the direction of travel may be a vehicle equipped with the navigation apparatus 100 in FIG. 2, or a vehicle equipped with the manual direction selector 200 in FIG. 2.

First, in the case of a vehicle equipped with the navigation 100, the wireless data receiver 130 inside the navigation 100 receives a direction request 600 transmitted from the traffic signal controller 300. At this time, the request may be simultaneously received from multiple traffic signal controllers, and the actual response may be obtained by using the position coordinates received from the traffic signal controllers to find the traffic signal controllers existing on the navigation database. A response is made to the nearest traffic signal controller.

When the selection 610 of the traffic signal controller to respond is completed, the operation direction 620 is determined by extracting the progress direction of the intersection from the route database based on the current position of the vehicle.

After the direction is determined, the determined direction is transmitted to the traffic signal controller along with the unique ID of the navigation, the location information of the vehicle, and the like (630).

Next, in the case of the vehicle equipped with the manual direction selection device 200, the wireless data receiver 230 receives the driving direction request 700 from the traffic signal controller 300 similarly to the navigation 100.

When a request is received from a plurality of traffic signal controllers, the traffic signal controller selected at the shortest distance in the same travel direction is selected using the current vehicle position, travel direction, and position coordinates of the traffic signal controller acquired from the GPS receiver 220 ( 710).

Since the manual direction selection device 200 does not have a route database, it is impossible to know which direction to proceed at the next intersection without the driver's input. Therefore, it is essential to request the driver 720 to input the driving direction through a voice or a signal. If there is no driver's response for a certain period of time, it is regarded as going straight. Otherwise, the direction is input by using the direction indicator lever mounted next to the steering wheel of all vehicles, or the direction of movement is input by using other methods such as voice and button. (730).

When the driving direction is determined based on the driver's input, the response is completed by transmitting 740 to the traffic signal controller 300 together with the unique direction ID of the manual direction device and the position information of the vehicle.

The traffic signal controller 300, which receives the driving direction information, the unique ID, the location information of the vehicle, and the like from the navigation apparatus 100 or the manual direction selection apparatus 200 (800), uses these to control the optimal signal. This completes one cycle of communication.

Note that the preferred embodiments of the present invention described above are for illustrative purposes only, and various changes and modifications may be made without departing from the spirit and scope of the present invention as set forth in the claims to be described below. Should be.

The present invention described above can accurately count the number of vehicles according to the progress direction that is difficult to implement in the existing technology, and based on this, it is possible to control the optimal traffic signal and maximize the time and economic effect by dramatically increasing the flow of the vehicle. You can.

In addition, the system is very practical because it is easy to install and low cost.

When the traffic signal controller is connected to the network, it is possible to grasp the flow chart of the wide-band vehicle, and it can be applied to various fields because it can be completely traced to the path of a specific vehicle.

Claims (5)

In the traffic signal control system for wirelessly communicating with the direction providing device, It has a unique ID, requests the heading information wirelessly to the heading information providing apparatus (100, 200), and controls the signal based on the heading information received from the heading providing device (100, 200) A traffic signal controller 300; Having a unique ID, after receiving a request for progress information wirelessly from the traffic signal controller 300, proceeding direction information providing apparatus (100, 200) for providing a travel direction to the traffic signal controller (300) Including, When the traveling direction information providing apparatus 100 or 200 receives the traveling direction information request from several traffic signal controllers 300 at the same time, the traffic signal controller selecting unit 140 selects a response target traffic signal controller 300. Traffic signal control system comprising a. The method of claim 1, The direction information providing apparatus is a navigation (100), The navigation 100, A route database 110 for guiding a route from a departure point to a destination; A navigation unique ID unit 120 to which a unique ID is assigned for each navigation device; A wireless data receiver 130 for receiving a progress direction information request from the traffic signal controller 300; An operation unit 150 for extracting a moving direction from the path database 110; Traffic signal control system characterized in that it comprises a wireless data transmission unit for transmitting a forward direction response to the traffic signal controller (300). The method of claim 1, The traveling direction information providing device is a manual direction selection device 200, The manual direction selection device 200, A unique direction selection device unique ID unit 210 to which a unique ID is assigned for each manual direction selection device; A GPS receiver 220 for identifying a current vehicle position; A wireless data receiver 230 for receiving a direction request from the traffic signal controller 300; A guide part 250 for requesting an input of a vehicle travel direction; An input unit 260 for selecting a vehicle traveling direction; Traffic signal control system characterized in that it comprises a wireless data transmission unit for transmitting the forward direction response to the traffic signal controller (300). The method of claim 1, The traffic signal controller 300, A traffic signal controller unique ID unit 310 assigned with a unique ID for each traffic signal controller; A wireless data receiver 320 for collecting travel direction information from the travel direction information providing apparatus (100, 200); A signal controller 330 for collecting vehicle number and direction information and controlling a traffic light based on the information; Traffic signal control system characterized in that it comprises a wireless data transmitter 340 for requesting the direction information by including the ID and position coordinate information of the traffic signal controller 300 to the traveling direction information providing apparatus (100, 200) . The method of claim 4, wherein The traffic signal controller selecting unit 140 or 240 selects the traffic signal controller 300 existing at the shortest distance of the traveling route using the location coordinate information and the ID received from the traffic signal controller 300. Traffic signal control system.

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