KR20010037317A - information transmission system for synthetic transport management - Google Patents

Abstract

PURPOSE: A general traffic management information transmitting system is provided to provide a traffic information related to traveling vehicles to general masses by processing a collected signal from a vehicle detector by a field controller. CONSTITUTION: A plurality of vehicle detectors(1) are installed at a plurality of road points and detect a traffic situation. A plurality of field controllers(2) process signals from the vehicle detectors(1). A plurality of internet interface devices(3) are connected to output sections of the plurality of field controllers(2) and transmit data to an internet. A central managing device(4) is located away from a corresponding road and performs a web hosting service. A guide and traffic controller(5) informs a traffic situation or controls a flow of a traffic according to a command of the central managing device(4). A plurality of traffic guide terminals(6) are connected to the internet and receive a desired real time traffic information.

Description

Information transmission system for synthetic transport management

The present invention collects and processes various traffic information related to a vehicle driving on a road to provide to the general public in real time, or to efficiently operate a guide and a traffic control device for inducing a smooth communication. The present invention relates to a comprehensive traffic management information delivery system that quickly and accurately transmits information.

More specifically, signals generated from various vehicle detectors installed on the road are processed by the on-site controller to generate useful basic traffic data, and then continuously transmitted to a central management unit of a remote control center through a specific place on the Internet. The center processes the data transmitted from each site, generates various types of real-time traffic information and traffic control commands, and transmits them to a specific place on the Internet.The guidance and traffic control devices installed on the site are sent to a specific place on the Internet. It is an economical and reliable comprehensive traffic management information transmission system that takes designated measures according to the control orders of the established management centers, and enables the general public to access specific places on the Internet and understand the traffic situation through various media.

The development of industry and economy will lead to an increase in social, economic and cultural activities, which will not only increase the number of cars and the demand for cross-regional passenger and freight traffic, but also change the mode of passage. However, the expansion of road capacity and the diversification of roads are not enough to meet the increase in traffic demand and the change of style. Therefore, the public's dissatisfaction is increased due to the increase of traffic demand, and economical due to air pollution, traffic accident and vehicle delay. Losses continue to increase.

Under these circumstances, new alternatives are being proposed to narrow the gap between traffic demand and road supply by dramatically improving the efficiency of road use using technologies from other fields such as electronics, information, and communication. In recent years, this solution has been called the Intelligent Transport System (ITS), and this technology is expected to provide a total improvement in traffic control, traffic information guidance, vehicle operation, public and freight transportation.

The construction of an intelligent road traffic system starts with the task of recognizing vehicles driving on roads that are subject to surveillance and control. For example, in the past, investigators visited the site to investigate daily, weekly or monthly traffic volume, average speed, vehicle type, etc., and then controlled traffic flow or established roads according to the procedures and intervals based on this data. However, recently, the development and distribution of AVC (Automatic Vehicle Classification) equipment, which is installed at the site and measures the number of passing vehicles by hour and lane, vehicle type, driving speed, and road occupancy rate, It is beginning.

The vehicle classification system developed so far is equipped with a serial communication function such as RS-232C and adopts a method of connecting to the central management unit of the management center through a modem and 1: 1 dedicated line or a modem and a general telephone line. Doing. In this case, in order to grasp the traffic situation in the area, the control center calls each field equipment individually and requests the data.In this case, the communication protocol used between the two equipments is the arbitrary format of each equipment manufacturer. Is following. In such a conventional method, the agency in charge of traffic control inputs and calculates traffic indicators on the site to drive the variable information display panel on the site through a separate 1: 1 dedicated line or a general telephone line, or airborne broadcasting or automatic guidance telephone. It transmits to driver by using and drives traffic light and variable lane controller through another dedicated line or general telephone line.

The existing system as described above has a structure in which all the components in the site are connected to the central management unit of the management center and the control unit of the control institution, respectively, in a one-to-one manner. The installation of the leased line is practically impossible, and even the use of a regular telephone line increases the burden of maintenance and call charges, and causes a lot of transmission errors, thereby making it impossible to process in real time. In addition, when an abnormality occurs in the control device of the central management device or control institution, the service of all traffic control targets is temporarily stopped, so the reliability of the system is low, and each site is connected in sequence, which is necessary for information collection and control. There is a problem that the time delay is a problem, and since a separate protocol suitable for each field equipment must be used, compatibility between the equipment can not be maintained.

On the other hand, as an alternative to improve the reliability and speed of the entire system, a method of installing a plurality of communication devices and communication lines for simultaneous connection with a plurality of central management devices may be sought. Not only that, but also its limited ability to expand, effective control cannot be implemented unless the underlying information delivery systems and methods are changed. In addition, a more effective information delivery system should be introduced to satisfy various public desires to obtain desired information at a desired place, at a desired time, through a desired medium, and in a desired manner.

The present invention has been made in order to solve the above-mentioned conventional defects and problems, and processes the signals collected from the vehicle detectors installed on the road with the on-site controller to make the basic traffic data and then transmit them to a specific place on the Internet, and manage The central management unit of the center processes basic traffic data transmitted from each site, generates various types of real-time traffic information and traffic control commands, and sends them to a specific place on the Internet. By receiving the control command from the location and performing it, the communication protocols between the components are matched, the speed and reliability are increased while reducing the cost of information transmission, and the cost of expanding the central management device with the increase of the components is almost zero. In addition, it can provide the information needed by many publics who want to use it. The purpose is to provide a comprehensive traffic management information delivery system.

In order to achieve the above object, the present invention provides a vehicle detector installed on a plurality of roads; A field controller configured to generate basic traffic data by performing amplification, filtration, conversion, and operation on a signal output from the vehicle detector; An Internet access device connected to the field controller to connect to a Point to Point Protocol (PPP) service of an Internet access company using a commercial data communication network or to a cable TV network to periodically transmit basic traffic data to a specific place of the Internet; Located at a considerable distance from the access device, by processing the basic traffic data for each point stored in the relevant place of the Internet to generate a variety of real-time traffic information and traffic control commands, etc. Web hosting (Web) A central management device for hosting function; It is located on the road of that point and connects to PPP service of internet access company using commercial data communication network, or connects to cable TV network to receive control command sent to a specific place on the Internet to express predetermined traffic information or traffic flow. A guidance and traffic control device for appropriately controlling the vehicle; It includes a traffic information terminal connected to the Internet in various media to obtain desired information at a desired time, at a desired time, and in a desired manner. The communication protocol between each component and the Internet is TCP / IP (Transfer Control Protocol / Internet). It provides a comprehensive traffic management information transmission system composed of unified methods in the form of Protocol.

Meanwhile, the central management apparatus processes the traffic information accumulated in a specific place by a predetermined program into local real-time traffic information and various statistical files, and then uses various media such as computers, wired and wireless terminals, and automatic answering services connected to the Internet. Through this, various types of information are provided to a large number of the public, and the driver who is provided with it can take necessary measures such as judging the traffic situation in the area and selecting the optimal route. Based on the information, planning, maintenance and control related to roads and traffic will be carried out.

This information delivery system enables multi-processing and control using a computer network that is authorized as a central management device, and greatly improves the reliability of the system by using the Internet with the ability to prepare for various situations. The amount of information and the number of components can be extended, regardless of the capacity of the device and communication device, the incoming and outgoing time and the number of lines of the phone, and real-time information can be processed continuously without loss. In addition, even if the system is expanded nationwide, it is possible to use a commercial data communication network which is cheaper than a local telephone, or to a cable TV network that provides a service level of private line at a lower cost. It provides the technical and economic effect of saving.

1 is a block diagram showing a comprehensive traffic management information delivery system of the present invention.

Fig. 2 is a block diagram showing the configuration of the Internet access device of the present invention.

* Description of the symbols for the main parts of the drawings *

1: vehicle detector 2: field controller

3: Internet access device 4: Central management device

5: guidance and traffic control device 6: traffic information terminal

31 microprocessor 32 clock generator

33: reset control element 34: drive element for serial communication

35: unique number setting element 36: modem

Hereinafter, described in detail by the accompanying drawings of the embodiment of the present invention as follows.

1 is a block diagram showing a comprehensive traffic management information transmission system of the present invention, in which a vehicle detector 1 is installed on a road of multiple points in order to grasp a traffic situation, and a field controller for processing the signal ( 2) is connected, and the output of the field controller (2) has a configuration attached to the Internet connection device (3) for transmitting data to the Internet through a commercial data communication network or cable TV network, far away from the road The central management unit (4) of the management center that performs web hosting service at the location is connected to the Internet and informs the traffic situation of the site according to the command of the central management unit (4) or controls the flow of traffic appropriately. The guide and traffic control device 5 is connected to the Internet, and various traffic guide terminals 6 for receiving desired real-time traffic information are randomly selected. And through a variety of media from the value connected to the Internet, each component is showing a state connected to the Internet in a uniform protocol for the TCP / IP format, in which information is passed.

Various types of vehicle detectors (1) are installed to collect information such as the number, type, size, speed, and weight of the vehicle driving on the road of interest, which is located on the top or side of the road. Microwave, video image, infrared, ultrasonic, and laser space detectors, induction loops, load cells, and piezoelectrics on the road surface Various types of embedded detectors are available.

The signal generated by the vehicle detector 1 can be represented in various forms such as voltage, current, time difference pulse, or image, and the on-site controller 2 amplifies or filters these signals and then recognizes them in the microprocessor. It converts them into digital signals that can be processed and performs the appropriate calculations on these signals by the built-in software. The site controller 2 associates these traffic factors with time and place to generate basic traffic data in a specified format, and transmits them to a specific place on the Internet through the Internet connection device 3 at predetermined times.

The Internet connection device 3 is a block diagram showing the configuration of the Internet connection device of FIG. 2, and includes a microprocessor 31 in which a predetermined program is embedded, a clock generation device 32, and reset control. A device 33, a serial communication drive device 34, a unique number setting device 35, and a modem 36 are built-in.

The clock generation element 32 is connected to the microprocessor 31 to provide a frequency necessary for operation, and the reset control element 33 monitors the operation of the microprocessor 31 to reset if necessary. A signal is generated to initialize the entire Internet access device 3. The unique number setting element 35 is attached to distinguish each of the components provided or received from the central management unit 4 by assigning a unique number for each point, and the serial communication driving element 34 is on-site. It serves to maintain signal conditions necessary for data communication with the controller 2, the guidance and traffic control device 5, and the modem 36.

By such a configuration, the Internet access device 3 is connected to the Internet through a commercial data communication network or a cable TV network using a predetermined communication protocol to transmit basic traffic data generated by the field controller 2 to a specific place of the Internet, or It serves to transmit the control command of the management device 4 to the guidance and traffic control device (5). In this system, if the central management unit (4) of the management center cannot provide PPP service, the PPP service of a commercial Internet access company can be used, and a separate intermediate device is installed at a short distance connected to a local telephone. Receive basic traffic data or control command through 1: 1 public telephone line connection. In all data transmission, communication protocol between each component and internet uses standardized TCP / IP format.

Generally, the management center is a government agency related to transportation, a private organization, or a business that provides services, and is located far from the road, where the central management device based on a computer network with a certain level or more of performance is provided. (4) is connected. The central management unit 4 processes the basic traffic data of each point transmitted to the corresponding place on the Internet by a predetermined program, and provides various real-time traffic information in various forms of texts, diagrams, and maps, and various statistics related to traffic, In addition, a web hosting service is provided to generate a traffic control command for driving the site guidance and the traffic control apparatus 5 and providing the same to a specific place on the Internet. The web hosting service provided by the management center provides real-time traffic information for the general public, drivers and transportation companies to identify traffic conditions and induce optimal route selection, or for road construction companies, engineering companies, and traffic administration agencies. It provides texts, charts, maps, graphs, etc. to establish and expand roads, improve road networks, maintain and expand road facilities, control traffic appropriately, distribute and guide traffic volume, supplement public transportation, and guide safe driving. It will be provided quickly and in various forms.

The traffic control command sent to a specific place on the Internet provides traffic conditions to the driver of the corresponding point through a guide device (5) such as a variable information display board installed on the road of the corresponding point to assist in judgment and action such as route selection, or By appropriately controlling the traffic flow by using various commercialized traffic control devices such as traffic lights and variable lane signals, road use efficiency is increased and smooth traffic is induced. At this time, the connection between the information and traffic control device 5 and the Internet uses the Internet access device 3 and a commercial data communication network or a cable TV network. Like the case of the field controller 2, a PPP service of a commercial Internet access company is provided. By installing a separate intermediary device at a short distance connected to a local telephone or using a local telephone, the user can transmit the guidance and traffic control commands received from the Internet through the existing 1: 1 general telephone line connection. The communication protocol between the network and the Internet uses a standardized TCP / IP format.

Variable information displays installed at the site often do not help drivers in locations that cannot be visually identified or the general public who is planning to pass through the area. There is a disadvantage in that it does not provide the level of information required by the company manager, traffic administrator, traffic planner, road builder. A device for providing the desired information, in the desired manner, at the desired time and in the desired place to such a large public is the traffic guidance terminal 6. The traffic information terminal 6 and the Internet can be connected through various existing media such as a leased line, a commercial data communication network, a cable TV network, or a wireless data communication network. The communication protocol uses a standardized TCP / IP format. As the traffic information terminal 6, a general-purpose computer connected to the Internet, a web service terminal, an automatic telephone answering system, etc. may be used. When the terminal is used, basic traffic information, maps, and pictures based on texts may be used. It is possible to economically obtain high-quality and reliable information such as processed traffic information expressed in the form, and traffic management information and various statistical data, and broadcasting stations or radio stations refer to this terminal to transmit over-the-air broadcasting. Real-time traffic information can be easily obtained and delivered quickly and accurately.

This information delivery system accurately receives real-time traffic information drawn from a plurality of vehicle detectors 1 and field controllers 2 scattered over a large area using a computer network authorized as a central management device 4, It is possible to drive the kind of guide and traffic control device 4 quickly and appropriately, and through the traffic guide terminal 6, there is an effect of conveniently and variously providing the necessary traffic information to the public. In particular, by using a stable medium such as the Internet, the reliability of the system can be greatly improved, and the amount of information and the number of components regardless of the capacity of the central management unit 4 and the communication device, the call origination time, and the number of lines. Can be extended, and real-time information can be processed continuously without loss. In addition, even if the system is expanded nationwide, it is possible to use a commercial data communication network, which is less expensive than a local telephone, or to a cable TV network that provides a line service at a lower cost. To provide the technical and economic effects.

The comprehensive traffic management information transmission system of the present invention as described above significantly reduces the information transmission cost between each component related to traffic, increases the speed and reliability of information exchange, and reduces the burden on the central apparatus due to the increase of the components. In addition to improving economics and scalability, there is an effect that can provide a variety of information to a large number of people who want to use traffic information.

Claims (2)

In order to grasp the traffic situation, a vehicle detector 1 is installed on a road at a plurality of points, and a field controller 2 for connecting the signal is connected, and a commercial data communication network or a cable is connected to the output of the field controller 2. Attach the Internet access device (3) for transmitting data to the Internet through the TV network, and connect the central management device (4) of the management center to perform the web hosting service at a location far from the road to the Internet, and According to the command of the central management unit (4) informs the traffic situation of the site or connects the guidance and traffic control unit (5) to properly control the flow of traffic through the Internet, and various traffic for receiving the desired real-time traffic information The information terminal 6 is connected to the Internet at any location, and each component is connected to the Internet by using a unified protocol in the form of TCP / IP. Comprehensive traffic management information delivery system which comprises delivering control commands. 2. The Internet connection device (3) according to claim 1, wherein the Internet connection device (3) includes a clock generation device (32), a reset control device (33), and a drive device for serial communication, centering on a microprocessor (31) having a predetermined program embedded therein. ), A unique number setting element 35 and a modem (36) is connected, and a comprehensive traffic management information transmission system, characterized in that connected to the Internet through a commercial data communication network or cable TV network.