KR20000026418A - Apparatus and method for collecting traffic information - Google Patents

Abstract

PURPOSE: A method for collecting traffic information is provided to have a minimum travel time to a driver by accurately counting and managing a travel time and a travel speed required for traveling a rink by collecting a starting point and an ending point of each route in real time without mapping with electronic map. CONSTITUTION: A method for collecting traffic information includes the steps of transmitting the position information of the route to probing cars by installing a position transmitting apparatus in a starting point and an ending point to a whole road, receiving/classifying information classifying and receiving continually the position information and the strength of the received signal by receiving the transmitted signal of corresponding position while traveling the road, transmitting the traveling information recognizing the position of probing cars and the starting and the ending points and counting the travel time and travel speed required for traveling the route with the recognized information, and receiving and storing information of each route, recognizing and managing traffic flow information by counting the representative value of the traveling information of each route.

Description

Traffic information collection method and apparatus

The present invention relates to traffic information collection on a road, and more particularly, to a traffic information collection method and apparatus for detecting and collecting the time and speed required to travel on a road in real time regardless of the location and environment of the road, The present invention relates to a traffic information collecting method and apparatus for quickly and accurately informing a driver of the degree of congestion of an entire road while calculating and managing an average travel time and an average travel speed of each road with respect to the entire road.

Recently, with the development of industry, the supply of vehicles is increasing, and the distance and time for using the vehicles are increasing. Also, as roads become more complicated, drivers often use unfamiliar roads.

In this way, the number of vehicle supply increases sharply compared to the road rate, and the road congestion becomes worse.

In order to reduce such huge national loss, it is necessary to quickly and accurately detect the degree of stagnation of the entire road and inform the driver of the degree of congestion of the entire road, thereby distributing the vehicle to less congested roads or distributing the time zone. It is.

In this way, it is necessary to collect the traffic information for the entire road in advance in order to inform the driver about the traffic congestion section without any loss of time in the traffic congestion or complicated city traffic network and to recommend the route to the destination before the departure desirable.

Recently, a traffic information collection system for collecting and healing the traffic flow to the entire road by time zone has been provided.

The traffic information collecting system collects position information of a vehicle equipped with a terminal by digitizing the positions of roads and facilities on the map and storing the information on the disk ROM and using satellites floating on the stationary orbit, And the travel time and the traveling speed of each link for the entire road are guided by matching the numerical link on the map.

However, most of such traffic information collection systems use a global positioning system (GPS).

The satellite of the Global Positioning System (GPS) used in the traffic information collection system is a satellite navigation system which is developed by the Department of Defense of the United States of America and placed on a geostationary orbit, and intentionally transmitted by using an error in other countries Which receives a radio wave signal emitted by at least 3-4 of 20 GPS satellites on a geostationary orbit equipped with an atomic frequency and obtains the distance from the propagation time of the radio wave signal to the satellite to obtain a three- And the Doppler effect of the radio wave.

As described above, the global positioning system (GPS) has been initially developed for military use. However, since the value is very high in civilian transportation means, a GPS .

Applying the Global Positioning System (GPS) to the traffic information collection system can provide information on the traffic flow to the whole road, the distance to the destination, and the time of the vehicle.

Typically, the error of the distance signal received from the GPS satellite is about 100 m to 2 km.

As such, an apparatus for collecting traffic flows to the entire road using a global positioning system (GPS) is shown in FIGS. 1 and 2. FIG.

The apparatus shown in Figs. 1 and 2 will be described as an example of a traffic information collecting apparatus using a conventional global positioning system.

The traffic information collection device includes a plurality of GPS satellites 10 that are positioned on a geosynchronous orbit and transmit GPS signals including position information and time information of the vehicle, (Hereinafter referred to as "probing vehicle") 12 that receives and calculates and transmits GPS signals 11 transmitted from the GPS terminal 11, And a central center 108 for receiving the position signals of the relay vehicles 12 and calculating and managing the average travel time and traveling speed of the vehicle 12.

The GPS terminal 11 that calculates the position information with the radio waves emitted from the GPS satellites 10 and transmits the information to the communication repeater 106 as shown in FIG. 2, receives the radio waves from the plurality of GPS satellites 10 A GPS receiver 101 for receiving the GPS signal including the position and time information of the probed vehicle 12 via the antenna 100 and calculating the position information of the probing vehicle 12, A central processing unit 102 for analyzing the history of the position information periodically transmitted by the GPS receiver 101 to correct the position measurement error and controlling the operation of the entire system, And a wireless communication module 104 for modulating the position information of the corrected probing vehicle 12 to a frequency and transmitting the modulated information through the antenna 105. [

The GPS receiver 101 of the GPS terminal 11 receives a frequency down conversion signal for frequency conversion of a plurality of GPS signals received through the antenna 100 and having different frequencies from several hertz to several tens of gigahertz A GPS tuner 101b for extracting only the GPS signals corresponding to the current position of the probing vehicle 12 from the downed baseband signal, And a position calculating section 101c for calculating the absolute coordinates of the time and providing the current position information of the probe vehicle 12 to the central processing unit 102. The wireless communication module 104 of the GPS terminal 101 also comprises: A local oscillation unit 104b for generating an oscillation frequency under the control of the central processing unit 102 and a modulation unit 104 for modulating and outputting the position information of the probing vehicle 12 whose position error is corrected in the central processing unit 102 (104a), a modulated signal It consists of a transmission amplifier section (104c), and a transmission power amplification unit (104d) to be transmitted via an antenna 105 to the power amplifying the amplified transmission signal at a sufficient strength for amplifying a sufficient size.

The central center 108 for receiving the positional information of the probing vehicle 12 transmitted from the GPS terminal 11 and calculating and managing the average traveling time and traveling speed of the probing vehicle 12, A communication server 108a that receives the transmission signal of the GPS terminal 11 relayed through the communication relay device 106 via the antenna 107 and extracts the position information of the probabilistic vehicle 12, A map server 108b for mapping the information to a link on the stored electronic map to detect the traveling time and the traveling speed of the link, and a map server 108b for running the links collected through the operation of the probing vehicle 12 from the map server 108b And a database server 108c that comprehensively manages data on time and traveling speed.

3 is a view showing the GPS signal received from the GPS terminal 11 mounted on the probing vehicle 12 at the time when the probing vehicle 12 is operating, 2 for collecting and transmitting the positional information of the sent vehicle 12 from the central center 108 via the communication relay device 106 and analyzing the traffic flow of the road and systematically storing and managing the traffic flow A traffic information collecting method according to the present invention.

A traffic information collection device using the global positioning system according to the related art will be described in further detail with reference to FIG.

When the GPS terminal 11 of the traffic information collecting apparatus to which the global positioning system is applied operates the probing vehicle 12 in the state where the GPS terminal 11 is activated by the operation of the function key of the operation panel 103 ) The central processing unit 102 of FIG. 2 starts up the GPS receiver 101 and the wireless communication module 104.

Along with this, the GPS receiver 101 also receives the radio waves radiated from the plurality of GPS satellites 10 floating on the geostationary orbit, and calculates the position information of the probe vehicle 12.

That is, the GPS radio waves including the position information and the time information of the probe vehicle 12 are emitted from the plurality of GPS satellites 10, for example, 20 GPS satellites 10 floating on the geosynchronous orbit.

GPS signals emitted from a plurality of GPS satellites 10 are received and processed by the GPS receiver 101 of the GPS terminal 11 mounted on the probe vehicle 12 as shown in Fig.

1 and 2, the GPS receiver 101 of the GPS terminal 11 mounted on the probe vehicle 12 has at least three or four (preferably two or more) GPS satellites 20 floating on the geostationary orbit (ST12) to the frequency down unit 101a through radio wave receiving means such as a plane omni diplexer antenna 100 (step ST12), and supplies the radio wave to the frequency down unit 101a.

The frequency down unit 101a frequency-downs the received GPS radio waves of several GHz to several tens of GHz to baseband signals and supplies them to the GPS tuner 101b.

The GPS tuner 101b extracts only a baseband signal that is most suitable for its position among the baseband signals for each GPS signal inputted through the frequency down unit 101a, and supplies the baseband signal to the position calculating unit 101c.

The position calculating unit 101c calculates the absolute coordinates of the probing vehicle 12 from each baseband signal tuned and inputted by the GPS tuner 101b, that is, calculates absolute coordinates with latitude and longitude, altitude, And supplies it to the central processing unit 102 to be described later in detail (step ST13).

As will be appreciated, the GPS signal is a signal propagated from a plurality of satellites 10, which includes time information propagated from satellites.

The arrival time required for each of the plurality of GPS satellites 10 to arrive at the probe vehicle 12 differs from each other due to the difference in distance between the probe vehicle 12 and the GPS satellites 10, The GPS signal arrival time from each GPS satellite previously set with respect to the reference coordinates corresponding to the position is compared with the arrival time of the GPS signal from each GPS satellite received at the position of the specific probing vehicle 12, Can be calculated.

Along with this, the central processing unit 102 corrects the error of the position information of the probing vehicle 12, which is periodically and continuously calculated and inputted in the position calculating section 101c of the GPS receiver 101, Controls the local oscillation unit 104b of the radio communication module 104 and transmits the position information to the modulation unit 104a of the radio communication module 104 in order to transmit the radio signal to the public network at a very short period, .

The position information of the probing vehicle 12 corrected and output by the central processing unit 102 is mixed with the oscillation frequency of the local oscillation unit 104b in the modulating unit 104a and transmitted to the transmission amplifying unit 104c of the radio communication module 104. [ And then supplied to the transmission power amplification unit 104d.

The transmission power amplifier 104d of the wireless communication module 104 frequency-modulates and frequency-inputs the input information in a very short period, amplifies the received position information to a sufficient intensity, and transmits the amplified power to the public network through the antenna 105 (ST14).

The signal transmitted from the GPS terminal 11 of the probe vehicle 12 is received and processed by the central center 108 via the communication relay device 106. [

The central center 108 includes a communication server 108a, a map server 108b, and a database server 108c.

The communication server 108a of the central center 108 receives the transmission signal of the probing vehicle 12 relayed to the public network through the communication relay device 106 via the antenna 107. [

Then, only the position information of the probe vehicle 12 is periodically extracted from the received transmission signal and supplied to the map server 108b (step ST15).

Here, the map server 108b includes a compact disc player for loading a compact disc (CD-ROM).

In addition, the compact discrom has recorded the location of the roads and facilities on the map numerically.

Accordingly, when the position information is input through the communication line, the map server 108b loads and reads the electronic map recorded on the recording medium such as a compact disc ROM (CD-ROM) and the like, through the compact disc player.

The position information of the extracted and inputted probing vehicle 12 is mapped to the starting point and the ending point of each link on the electronic map to periodically calculate the time and speed required for the probing vehicle 12 to travel on each link (ST16).

Data regarding the travel time and traveling speed of the probing vehicle 12 calculated for each link in the map server 108b is periodically supplied to the database server 108c via the communication line.

The database server 108c systematically stores (step ST17) and analyzes the traveling time and the speed of each link collected from the map server 108b through the running of the probing vehicle 12, The time and the average speed are calculated (step ST18).

Thus, by calculating and managing the average travel time and speed of the link by time zone, it is possible to grasp the traffic flow of the road, and it is also transmitted to the vehicle equipped with the vehicle navigation apparatus, so that it is recommended to the driver for the fastest route to the destination before departure .

The traffic information collecting device using the global positioning system according to the related art described above receives a radio wave emitted from at least three or more satellites among a plurality of GPS satellites floating on a geosynchronous orbit, The location information of the probe vehicle is acquired wirelessly from the map server of the center center, and then it is mapped to the start point and the end point of the link on the own electronic map to calculate and manage the average time and speed required to travel each link of the road have.

However, according to the traffic information collecting apparatus using the conventional global positioning system, the following problems are derived by recognizing the location of the probing vehicle by using GPS satellites to manage and understand the traffic flow of the road.

(One). In the case of detecting a position using a GPS terminal because the GPS satellite deliberately transmits an error, it is difficult to precisely map the start point and the end point of the link because a position error occurs from 100 m to 2 km.

(2). In places such as tunnels, high mountainous mountains, and downtown areas with large buildings, there are often fewer than four satellites that can be received simultaneously in probing vehicles, so the position error of the probing vehicle is very large and the position can not be accurately grasped.

(3). In addition to the cause of the GPS error, an error occurs in mapping the start point and the end point of the link by the communication cycle of transmitting the position of the probe vehicle to the center center. To reduce this error, the position information of the probe vehicle is transmitted So that the communication cost increases sharply with this.

(4). A map server including an additional device such as a disc player must be installed in the center, but as the price is high and the number of probe vehicles equipped with the map server is large, it is possible to invest a considerable amount of money. As a result, And that they are inherently irrational to reverse the collection of information.

As a method for reducing the measurement error of the probe vehicle due to the GPS radio waves radiated from a plurality of satellites, it is also conceivable to correct by using Differential GPS. However, It will require increased difficulty and cost.

Therefore, it is possible to prevent difficulties in fabrication and increase in cost of the GPS terminal and to minimize the difficulty and error rate of the mapping of the starting and ending points of the link, which are generated at the traveling time and traveling speed of the probing vehicle, A traffic information collecting device capable of obtaining the above-described effect is preferable.

Accordingly, the present invention has been made in view of the above circumstances, and it is therefore an object of the present invention to provide a positioning system that avoids a rise in communication cost due to a position information error and a transmission method of a probe vehicle due to use of a GPS terminal, As an aspect of the present invention, it is possible to easily and precisely calculate the average time and speed required for collecting the starting and ending points of each link in real time without mapping with the electronic map, The present invention provides a method and apparatus for collecting traffic information.

Another object of the present invention is to accurately receive and transmit positional information of a probe vehicle even in a region included in a range of bad conditions in which GPS satellite radio waves can not be received.

According to another aspect of the present invention, there is provided a positioning system comprising: a position transmitter disposed on a road without using GPS satellite radio waves; a high-frequency terminal device mounted on the probe vehicle; and a center center connected to the center through a wireless communication network, In order to accurately collect and grasp the time of day.

As another aspect of the present invention, there is an object of minimizing the number of communications between a high-frequency terminal device mounted in a probe vehicle and calculating position information and a central center, thereby reducing communication costs.

FIG. 1 is a conceptual diagram for explaining a road traffic information collecting apparatus using a global positioning system according to the related art,

FIG. 2 is a block diagram illustrating in detail a central center for collecting and systematically managing traffic information and a GPS terminal installed in the vehicle of FIG. 1,

FIG. 3 is a signal flow diagram for explaining a traffic information collection method according to FIG. 2,

FIG. 4 is a conceptual diagram illustrating an embodiment of a traffic information collecting apparatus according to the present invention,

FIG. 5 is a block diagram of a high-frequency terminal device installed in a position transmitter, a probe vehicle installed in the roadside of FIG. 4, and a device for collecting traffic information through a central center.

FIG. 6 is a block diagram showing the traffic information collecting apparatus of FIG. 5 in more detail,

FIG. 6A is a block diagram of a position transmitting apparatus which is installed at a main point of the road and transmits position information,

6B is a block diagram of a high-frequency terminal device which is mounted on a probe vehicle and receives and transmits information of the position transmitting device,

6C is a block diagram illustrating in detail a central center for collecting traffic information transmitted through a communication relay apparatus and systematically managing the traffic information,

7 is a signal flow diagram illustrating an embodiment provided in the description of a traffic information collection method according to the present invention,

7A is an operational signal flow diagram of the position transmitting apparatus of FIG. 6A,

7B is an operation signal flow diagram for the high-frequency terminal apparatus of FIG. 6B for receiving, calculating, and transmitting position information transmitted from the position transmitter of FIG. 6A,

FIG. 7C is an operation signal flow chart for the center center of FIG. 6C, which collects and systematically manages traffic information transmitted from the high-frequency terminal apparatus of FIG. 6B.

Description of the Related Art

20: position transmitter 30: high frequency terminal device

31: Probe vehicle 40: Communication relay device

50: central center 200: first transmission module

201: nonvolatile memory unit 202: first microprocessor

203: interface unit 300: receiving module

301: analog / digital converter 302: second microprocessor

303: Operation panel 304: Travel distance detector

305: timer 306: second transmission module

500: communication server 501: database server

According to another aspect of the present invention, there is provided a traffic information collection method,

(1) a location information transmission process of installing position transmitting devices at the start and end points of a link for all roads and transmitting the position information of the links to the probing vehicles at an appropriate signal strength;

(2) an information reception / classification search process for continuously receiving and classifying the location information of the link and the strength of the signal by receiving the transmission signal at the corresponding location while traveling on the road;

(3) calculating the time, distance, and speed required for traveling the link with the recognized information by recognizing the position of the probable vehicles and the start and end points of the link along with the search result, Transmission process; And

(4) Receiving and systematically storing travel information of the per-link probing vehicles sent out, calculating representative values of the per-link travel information of the stored probing vehicles, and recognizing traffic flow information for the entire road Traffic information management process.

Alternatively, the location information may be one of a unique number of a location originating device installed at a start point and an end point of the link, or an absolute coordinate value of a location of the location originating device.

Preferably, if any one of the conditions of the received position information and the signal strength is abnormal, position information and signal strength of the position transmitter positioned at the start and end points of the next link are received and classified and searched .

Alternatively, the traveling information of the link traveled by the probe vehicle may be transmitted after passing through the end of the link.

Preferably, the running distance is a distance from a start point to an end point of the link, and the distance is obtained under the following conditions.

Travel distance = n x I x 1 / m

In the above condition, m is the number of pulses generated when the wheel of the probing vehicle makes one revolution, I is the circumference of the wheel, and n is the total number of pulses of the distance traveled from the starting point to the end point of the probing vehicle.

Preferably, the running time is a time required to travel from a start point of the link to an end point of the link, and the time is obtained as a timer value.

Preferably, the running speed is a speed from a start point to an end point of the link, and the speed is obtained by dividing the running distance and the running time.

And selectively transmitting the running information of the link using either the public network or the roadside communication beacon.

According to another aspect of the present invention, there is provided a traffic information collection method,

(1) A location transmitting device is installed at the start and end points of a link for all roads, and a link for transmitting the position information of the link, the distance information between the start and end points of the link, and the time information to the probing vehicles Information transmission process;

(2) an information receiving / classifying step of classifying the position information, distance information, and time information of the link and the intensity of the signal by receiving the transmission signal at the corresponding position while traveling on the road;

(3) recognizing a start point and an end point of the link as the position information of the classified link, and running the travel from the start point to the end point of the recognized link, A travel information transmission process for obtaining a distance and a traveling speed and transmitting the traveling information; And

(4) Receiving and systematically storing travel information of the per-link probing vehicles sent out, calculating representative values of the per-link travel information of the stored probing vehicles, and recognizing traffic flow information for the entire road Traffic information management process.

In the traffic information collection method, it is preferable to designate either one of a unique number of a location transmitter located at a start point and an end point of the link or an absolute coordinates of a location of the location transmitter as the location information of the link.

Wherein the traveling speed of the link is a speed at which the probe vehicle travels from a starting point to an end point of the link and the speed is a distance from a start point to an end point of the link to a starting point and an end point of the link, And the travel time of the link based on the time information of the link information.

The above-mentioned objects are achieved by a position transmitting apparatus, which is installed at a start point and an end point of a link with respect to an entire road, and transmits the position information to a probe vehicle that travels the link with appropriate intensity;

And a controller for detecting the travel distance and travel time required for the probe vehicle to travel on the link in accordance with the received position information, calculating the travel speed, and transmitting the calculated travel distance to the public network A high frequency terminal device for transmitting;

A communication relay device for receiving and relaying the link-specific travel information collected while the vehicle is traveling from the public network; And

And stores the link-specific travel information through the communication relay device in a systematic manner, calculates the travel distance, the travel time, and the traveling speed for the stored travel information for each link to obtain traffic flow information for the entire road The traffic information collecting device according to another aspect of the present invention is characterized by including a central center for collecting traffic information.

Alternatively, the high frequency terminal apparatus and the communication relay apparatus may be connected to the high-frequency terminal apparatus via a roadside communication beacon, and the traveling information of the link may be transmitted to the communication relay apparatus.

Preferably, the position transmitting device comprises:

(1) a recording medium for receiving and storing location information of the link as code values;

(2) a first transmission module for modulating the location information encoded and stored in the recording medium at a high frequency and transmitting the modulated location information to the probing vehicle through an antenna; And

(3) a first microprocessor for encoding the position information of the link and supplying the encoded information to the recording medium, and controlling the transmission operation of the first transmission module in a scheduled procedure at the time of transmitting the position information.

Preferably, the high-frequency terminal apparatus further comprises:

(1) a receiving module that receives a signal transmitted from the position transmitter through an antenna, classifies the position information and the intensity of the signal from the received signal, and outputs the classified signal;

(2) analog-to-digital conversion means for digitizing the intensity of the signal classified by the receiving module;

(3) mileage detecting means for measuring a running distance of the driven vehicle and generating a pulse proportional to the running distance;

(4) traveling time detecting means for measuring a time required for the driven vehicle to travel on the link;

(5) a second microprocessor for calculating a traveling time, a traveling distance, and a traveling speed of the link with the position information classified by the receiving module, the digital value according to the intensity of the signal, and the measured distance and time; And

(6) a second transmission module for modulating the information on the travel time, the travel distance, and the traveling speed of the link obtained by the second microprocessor at a high frequency and transmitting the modulated information to the communication relay device through the antenna.

Preferably, the central center comprises:

(1) a communication server for receiving the link-specific travel information relayed by the communication relay device and detecting an error; And

(2) systematically stores and analyzes the link-specific travel information obtained from the communication server, and calculates an average value of the travel distance, travel time, and travel speed for the link-specific travel information of the probe vehicles, And a database server for recognizing and managing traffic flow information.

In this way, the position transmitting device located at the start and end points of the link for all the roads wirelessly propagates its own position information wirelessly and travels a link of the road, without a separate GPS satellite, GPS terminal device and expensive map server, The high frequency terminal device of the present invention receives the position information of the position transmitter and calculates and recognizes the time, distance and speed required for the probe vehicle to travel on the link, and transmits the calculated information to the central center .

As a result, the position error of the probe vehicle can not be confirmed according to the error of the distance and the visible region due to the GPS satellite, the GPS terminal device, and the map server of the center center, and the travel time and speed Thereby, there is an advantage that the driver can be guided to the fastest route to the destination without avoiding the traffic congestion before departure.

In addition, a plurality of embodiments of the present invention may exist, and the most preferred embodiments will be described in detail below.

And it is to be understood that the objects, features and advantages of the present invention can be better understood through the preferred embodiments.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a traffic information gathering method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In addition, the technology of the present invention can be applied to various traffic information systems that provide traffic to a driver of a vehicle traveling on the road by collecting traffic flows of all roads with terrestrial signals.

Therefore, FIGS. 4 to 7 used in the description are not specific traffic information systems, but are diagrams of various traffic information systems capable of collecting traffic flow information of roads by transmission and reception of terrestrial signals.

In the drawings used for the explanation, the same constituent components are denoted by the same reference numerals, and redundant explanations thereof are omitted.

In the following description, traffic information collection methods and apparatuses collect traffic information for a vehicle having a very long travel distance, such as a taxi, a bus, a logistics vehicle, and a business vehicle.

FIG. 4 is a conceptual diagram showing an embodiment provided in the description of the traffic information collecting apparatus according to the present invention. FIG. 5 is a view showing a state in which the position transmitting apparatus installed on the road side of FIG. 4, the high- The traffic information collecting device according to the present embodiment is installed at the start and end points of a link for all the roads, and collects its own unique ID (ID) A plurality of position transmitting devices (20) for wirelessly transmitting absolute coordinates of the position through the antenna (20a) at an appropriate intensity of the signal, and a position transmitter (20) mounted on the probe vehicle (31) The signal transmitted from the device 20 is received via the antenna 30a and the traveling distance and travel time required for the probe vehicle 31 to travel on the link in accordance with the received signal A high frequency terminal device 30 for detecting the traveling speed of the vehicle and calculating the traveling speed and transmitting the traveling speed to the public network through the antenna 30a; A traffic relay device 40 for receiving and relaying information from the public network and relay-specific traffic information of the relayed high-frequency terminal device 30 via an antenna 50a, And a central center 50 which manages and provides services.

As shown in FIG. 6A, the plurality of position transmitting devices 20 installed at the start and end points of the links for all the roads receive position information and traffic information to be served to the probe vehicle 31 from the traffic information communication network, (ID) of the position transmitting device 20 provided at the starting point and the end point of the link or the absolute coordinate values of the position of the position transmitting device 20 with the interface 203, A memory unit 201 for receiving and storing traffic information through the antenna 20a and storing the received traffic information as code values and modulating the location information and the traffic information stored in the memory unit 201 at a high frequency and transmitting the modulated information to the probing vehicle 31 via the antenna 20a And transmits the location information of the link and the traffic information of the interface unit 203 to the memory unit 201 and transmits the encoded information to the memory unit 201. The location information of the first transmission module 200 The first And a microprocessor 202.

The first transmission module 200 receives the position information (unique number or absolute coordinate value) coded and stored in the memory unit 201 from the first microprocessor 202 and converts the information into a bit string A first local oscillation unit 200c for generating an oscillation frequency under the control of the first microprocessor 202, and a second local oscillation unit 200b for generating a bit stream, A first modulator 200b modulating the modulated signal to a frequency of the one local oscillator 200c and outputting the modulated signal; a first transmission amplifier 200d amplifying the modulated signal to a sufficient magnitude; And a first transmission power amplification section 200e for amplifying the power and transmitting the amplified power to the public network through the antenna 20a.

6B, the high-frequency terminal device 30 of the road vehicle 31 running on the road receives the frequency-modulated and transmitted signal from the position transmitting device 20 via the antenna 30a, A receiving module 300 for classifying and detecting the position information and the intensity of a signal in the received signal, an analog / digital converter 301 for digitizing the intensity of the signal classified by the receiving module 300, A travel distance detecting unit 304 for receiving a pulse generated in accordance with the travel distance of the vehicle 31 through an input terminal 307 and counting and outputting the pulse; A timer 305 for detecting a travel time and a digital value and a count value of the travel distance detecting unit 304 and the timer 305 according to the position information and the intensity of the signal classified by the receiving module 300 Link travel time, A second microprocessor 302 for calculating and recognizing the driving distance and the traveling speed of the link and information on the traveling time, the traveling distance, and the traveling speed of the link calculated by the second microprocessor 302, A second transmission module 306 for sending the second transmission signal to the communication relay device 40 via the second communication interface 40 and an operation panel 303 for inputting the function key to the second microprocessor 302.

The receiving module 300 includes a receiving amplifier 300a for receiving and amplifying a signal transmitted from the first transmitting module 200 of the position transmitter 20 through an antenna 30a, A radio wave level detection unit 300c for detecting the level of the received signal amplified by the reception amplification unit 300a and supplying it to the analog / digital conversion unit 301, And a demodulation unit 300d that mixes the position information extracted by the data extraction unit 300b with the oscillation frequency, demodulates it into an original signal, and supplies the demodulated signal to the second microprocessor 302. [

The second transmission module 306 includes a second local oscillation unit 306a that generates an oscillation frequency under the control of the second microprocessor 302 and provides the oscillation frequency to the reception module 300, A second modulator 306b that mixes the traveling information input from the first local oscillator 306a with the oscillation frequency of the second local oscillator 306a and outputs the mixed signal; a second transmission amplifier 306c that amplifies the modulated signal to a predetermined level, A second transmission power amplifier 306d for amplifying and amplifying the amplified signal at a sufficient intensity and outputting a transmission signal of the second transmission power amplifier 306d and the reception signal of the antenna 30a at the time of transmission and reception, And a duplexer 306e.

6C, the central center 50 transmits the per-link travel information relayed from the communication repeater 40 to the public network through the antenna 50a to the plurality of modems 500a, 500b ), Receives the link-specific travel information from the transmission line, and transmits the link-specific travel information to the database 501b through an engine 501a ) And analyzing the stored travel information for each link in the application program 501c to obtain and manage an average value of travel distance, travel time, and travel speed for the travel information of each of the probe vehicles 31, (501).

7A is a flow chart showing a procedure for modulating the start position or the end position of the link, that is, the position information, from the position transmitting device 20 provided at the start point and the end point of the link, Fig. 7B is an operation signal flow chart of the position transmitting device of Fig. 6A which is transmitted to the vehicle 31. Fig. 7B is a flowchart of the operation of the position transmitting device 20 of Fig. 6A, in which the radio frequency terminal device 30 mounted on the probing vehicle 31 6b for calculating the travel time, traveling distance, and traveling speed required for the probing vehicle 31 to travel on the link with the signal and transmitting it to the central center 50 via the communication relay device 40 FIG. 7C is a flowchart illustrating the operation of the central station 50 of FIG. 6C, which receives the travel information collected by the high-frequency terminal device 30 through the communication relay device 40 to recognize and systematically manage the flow of the road traffic. ) For Fig.

The traffic information collecting apparatus according to the present invention performs the following operations with respect to collecting traffic flow information on all roads and systematically managing the roads without measuring errors.

Hereinafter, a more detailed description will be given with reference to Figs. 4 to 7. Fig.

First, as shown in Fig. 4, a plurality of position transmitting apparatuses 20 as shown in Fig. 5 and Fig. 6A installed at the start and end points of a link for all roads are activated. The interface unit 203 of FIG. 6A transmits the traffic information to be served to the probe vehicle 31 or the general vehicle and the positional information of the position transmitter 20 provided at the starting point and the end point of the link, that is, (Latitude, longitude, altitude) with respect to the location of the originating device 20 from the traffic information network and provides it to the first microprocessor 202.

The first microprocessor 202 encodes input traffic information and location information and stores the encoded traffic information and location information in a data recording medium such as the nonvolatile memory 201 (ST100).

Here, the location information may be received from the traffic information network, or may be stored in a data recording medium such as the nonvolatile memory 201 by operating a key input means such as an operation panel of the vehicle.

The reason why the location transmitter 20 receives the traffic information from the traffic information network will be described later. However, the traffic information is transmitted to the vehicle equipped with the navigation system (car navigation system) It is to recommend the road to the driver and to guide the vehicle to the less congested road.

In the state where the location information and the traffic information are coded and stored, the first microprocessor 202 first searches the channel of the first transmission module 200 for transmitting the location information through the communication channel (step S200). ST101).

If the currently searched communication channel is in use, that is, if the current location information (the absolute coordinate value of its own unique number or its own location) or traffic information (Step ST103) until the communication channel is vacant, that is, until transmission of positional information or traffic information is completed.

This is because the location transmitter 20 periodically and repeatedly transmits the location information or the traffic information stored in the nonvolatile memory unit 201. When the transmission contents of one cycle are completed, At this time, the first microprocessor 302 periodically searches the communication channel to determine whether transmission of one cycle of transmission contents is completed.

Subsequently, in step ST102, if the communication channel is empty, the first local oscillation unit 200c of the first transmission module 200 is controlled to transmit the position information again, and the first local oscillation unit 200c is also stored in the nonvolatile memory unit 201 And supplies the read position information to the data conversion unit 200a.

The position information output from the first microprocessor 202 is converted into a bit stream in the data converter 200a and then mixed with the oscillation frequency of the first local oscillator 200c in the first modulator 200b, Amplified to a sufficient magnitude through the first transmission amplification unit 200d of the first transmission power amplification unit 200e and then supplied to the first transmission power amplification unit 200e.

The first transmission power amplification unit 200e amplifies the frequency-modulated transmission signal to a sufficient power and transmits it to the road through the antenna 20a (step ST104), and waits for a predetermined time until the transmission is completed (ST105).

If it is determined that the transmission has been completed (ST106), the process after step ST104 is repeatedly performed. If the transmission is completed, the location information is continuously transmitted through the next communication channel.

The transmission signal emitted from the antenna 20a of the position transmitting device 20 is transmitted to the corresponding probing vehicle 31 running on the road where the position transmitting device 20 is installed, that is, Is received by the high-frequency terminal apparatus 30 of FIG.

5 and 6B, the high frequency terminal device 30 of the probing vehicle 31 running on the road link where the position transmitting device 20 is installed is provided with the antenna 20a of the position transmitting device 20 That is, each of the probing vehicles 31 travels on the road link while collecting the radio waves of the respective position transmitting devices 20 to determine the current position of the probing vehicle 31 and the position of the link And the traveling speed of the link and the time required to travel the link around the starting and ending points of the link are obtained and the traveling speed of the link is calculated through the communication relay device 40 to be described later, (50).

6B shows the high-frequency terminal device 30 of the probe vehicle 31 running on the link provided with the position transmitting device 20 with respect to the entire road. The high frequency terminal device 30 will be described in more detail with reference to FIGS. 6B and 7B.

First, the driver of the probe vehicle 31 controls the operation panel 303 to collect the time and link distance and the traveling speed required for the probe vehicle 31 to travel on the road link through the high-frequency terminal device 30, (Step ST200).

When the operation key is input, the second microprocessor 302 of the high-frequency terminal device 30 to be described later is activated, and the receiving module 300, the second transmitting module 306, the timer 305, The same running time detecting means is also started.

When the high frequency terminal device 30 is operated and the probing vehicle 31 is operated on the link of the road on which the position transmitting device 20 is installed (step ST201), the high frequency terminal device 30 mounted on the probing vehicle 31 (High frequency signal) of a plurality of position transmitting apparatuses provided at the start and end points of the link with respect to the entire road, the antenna 30a of the transmitting apparatus 30, Signal.

The received signal is filtered through a receiving amplifier 300a of the receiving module 300 through a transmitting / receiving separating device such as a duplexer 306a, amplified to a predetermined amplification rate, 300b and a radio wave level detection unit 300c.

The data extracting unit 300b extracts information to be provided to the probe vehicle 31 from the amplified received signal, for example, position information emitted from the position transmitter 20 (step ST202) .

Here, the location information may be a unique ID of a location originating apparatus installed at a start point or an end point of a link or a value of absolute coordinates (latitude, longitude, altitude) with respect to a location of the location originating apparatus, Abbreviated as position information.

The position information of the link start point or the link end point extracted from the data extraction unit 300b of the reception module 300 is transmitted from the demodulation unit 300d to the second local oscillation unit of the second transmission module 306 306a to be demodulated to the original information and then supplied to the second microprocessor 302. [

The radio wave level detector 300c of the receiving module 300 detects the intensity of the received signal amplified by the receiving amplifier 300a, that is, the radio wave intensity of the position transmitter 20 (step ST202) And supplies it to the analog / digital conversion unit 301.

The analog-to-digital converter 301 converts the intensity of the inputted radio wave into numeric data (ST203) and supplies it to the second microprocessor 302. [ At this time, the size of the received signal becomes larger as the probe vehicle 31 approaches the position originating device 20 provided at the link start point or link end point.

Therefore, the second microprocessor 302 of the high-frequency terminal device 30 continuously monitors the signal strength of the position transmitter 20 when the probe vehicle 31 runs the link.

When the intensity and position information of the signal are classified and detected and input through the receiving module 300, the second microprocessor 302 determines whether the position information received and input through the demodulator 300d is normal (ST204). In addition, the intensity value of the signal continuously detected and inputted by the A / D converter 301 is determined (ST205).

If the resultant position information determined in step ST204 is not normal or the intensity of the received signal is weak in step ST205, the probe vehicle 31 is continuously operated to periodically collect the position information of the link and the strength of the signal.

As shown in FIG. 4, the position transmitter 20 and the position transmitter 20, which are installed at the start point of the link while the probe vehicle 31 moves, are the causes of the location information received here being not normal or the intensity of the received signal being weak. Is located between the location originating devices installed at the end of the link.

At this time, the high-frequency terminal device 30 of the probing vehicle 31 receives the signal propagated from the two-position transmitting device. As a result, the second microprocessor 302 of the high- The location information (mixed information of the start point location information and the end point location information) is determined as the abnormal location information. And also because of the relationship not being in proximity to any one location transmitting device and being located in the middle of the two location transmitting devices, the signal strength also has to be detected weakly.

As described above, if the probe vehicle 31 is positioned between the position transmitter 20 and the position transmitter and the position information is abnormal or the intensity of the signal is weak, The location information and signal strength are collected and retrieved.

When the position information searched in step ST204 and step ST205 are normal and the intensity of the received signal is the maximum, that is, when the position information is closest to the position transmitting device 20, The current position of the probe vehicle 31 and the start and end points of the link are recognized with the propagated position information, that is, the ID number of the position transmitter 20, And recognizes the position and the start and end points of the link (ST206).

For example, when the probe vehicle 31 travels and comes close to the position transmitting device 20 installed at the starting point of the link, the second microprocessor 302 transmits its own unique number or absolute coordinates The second microprocessor 302 recognizes the current position of the probing vehicle 31 and the starting point of the link, and when the probing vehicle 31 continues to travel through the position transmitting apparatus installed at the end point of the link, The current position of the probe vehicle 31 and the end point of the link are recognized by the unique number or the absolute coordinate value emitted from the device.

When the start and end points of the link are recognized, the second microprocessor 302 travels from the start point to the end point of the link to the end point from the start point to the end point of the link with the position information of the recognized link The time (t) and the speed (V) are calculated (ST207).

The distance d from the start point to the end point of the link is calculated by counting the number of pulses transmitted in proportion to the travel distance in the travel distance detecting unit 304 to be described later and also calculates the time t accurately detects up to 1/1000 second using the output value of the running time detecting means for generating a real time pulse such as the timer 305 and the running speed V of the link is calculated as the traveling time t ) And the driving distance (d).

That is, as shown in FIG. 6B, the travel distance detector 304, such as the travel distance meter, counts and outputs a predetermined number of pulses input through the input terminal 307 every time the wheel of the probe vehicle 31 makes one revolution. The second microprocessor 302 determines the number of pulses input from the travel distance detecting unit 304 and the number of pulses that are proportional to the circumference of the wheel of the probe vehicle 31 based on the position information of the start point and the end point of the recognized link (D), that is, the distance from the starting point to the end point of the link is calculated.

For example, in the case of the probe vehicle 31 in which four pulses are outputted from the travel distance detecting unit 304 when the wheel makes one rotation, the travel distance d is as follows.

The traveling distance d = n x I x 1 / m = n x I x 1/4.

In the above condition, n is the total number of pulses of the distance traveled, I is the circumference of the probe vehicle 31, and m is the number of pulses generated when the wheel of the vehicle makes one revolution.

The running distance V obtained by dividing the running distance d thus obtained and the running time t obtained by the running time detecting means 305 is obtained.

That is, the running speed V = the running distance d / the running time t.

In this manner, information is periodically collected from each position transmitter 30 to calculate the travel distance d, travel time t and travel speed V of the link, To the center 50.

In order to transmit the information on the traveling distance d, the traveling time t and the traveling speed V to the central center 50, the second local oscillator 306a of the second transmission module 306 and the duplexer It is necessary to control the first transmission unit 306e in the transmission mode and supply the calculated information to the second modulation unit 306b of the second transmission module 306. [

The information output from the second microprocessor 302 is modulated to an oscillation frequency generated by the second local oscillator 306a and amplified to a sufficient size through the second transmission amplification unit 306c of the second transmission module 306 And then supplied to the second transmission power amplifier 306d.

The second transmission power amplification unit 306d amplifies the frequency-modulated transmission signal by a sufficient power and then transmits the amplified transmission signal to the communication relay apparatus 40 through the transmission / reception separation means such as the duplexer 306e and the antenna 30a (ST208).

Here, the transmission time point of the information on the running information of the link, that is, the information on the running distance d, the running time t and the running speed V is obtained after the probe vehicle 31 passes the end It is desirable to reduce the number of communications as much as possible.

In addition, link frequency information modulated by the high-frequency terminal device 30 may be transmitted to the communication relay device 40 using a wireless communication network as described above, or may be transmitted using a communication beacon on the roadside.

Subsequently, the second microprocessor 302 of the high-frequency terminal device 30 mounted on the probe vehicle 31 determines whether transmission of the travel information of the link has been completed (step ST209) ). When the transmission is completed, the traveling information of the next link is collected and transmitted in the same manner as described above.

5, the communication relay device 40 relays the signal transmitted from the radio frequency network 30 (the public network) or the roadside communication beacon from the high-frequency terminal device 30 of each of the probe vehicles 31 to the central center 50).

On the other hand, the central center 50 collects all the signals transmitted from the high-frequency terminal devices 30 of the probe vehicle 31 and relayed through the communication relay device 40 through the antenna 50a, Flow information is grasped and systematically managed.

6C shows a central center 50 for collecting traffic flow information relayed by the communication relay device 40 and systematically managing the traffic flow information. The center 50 will be described in more detail with reference to FIGS. 6C and 7C.

First, the central center 50 includes a communication server 500 and a database server 501 as shown in FIG. 6C.

The communication server 500 transmits the frequency-modulated transmission signal transmitted from each of the probing vehicles 31 and relayed through the communication relay device 40 to the antenna 50a and the plurality of modems 500a and 500b (ST300).

Then, information on the running distance d, the running time t and the running speed V of the link is extracted from the received signal (ST 301) and supplied to the computer 500c.

The computer 500c of the communication server 500 analyzes information extracted from the plurality of modems 500a and 500b (step ST302) and checks whether there is an error (step ST303).

If there is an error in step ST303, the signal is continuously frequency-modulated through the communication relay device 40. If there is no error, the signal is transmitted to the database server 501 via the communication line.

The database server 501 systematically stores the link-specific travel information (mileage, travel time, and travel speed) transmitted from the communication server 500 in the database 501b using the engine 501a (step; ST304).

When the travel information is stored in the database 501b, the travel information is read through the engine 501a and transmitted to the application program 501c.

The application program 501c analyzes the running information of each link collected from the various kinds of the probing vehicles 31 (ST305).

Then, an average value (representative value) of the travel distance, the traveling time, and the traveling speed is calculated (step ST306) with the analyzed traveling information as traffic flow information for the entire road (ST307).

The central center 50, which grasps the traffic flow information for the entire road as described above, informs the driver who is traveling on each road through the above-described traffic communication network in advance of the congested section to avoid the place, Before you get to the destination, you will be recommended to the driver.

In another embodiment of the traffic information collecting apparatus of the present invention, the high frequency terminal 30 as shown in FIG. 6B may be provided with a travel distance detecting unit 304, a timer 305, And transmits it to the central center 50 via the communication relay device 40. [

In order to realize this, the distance between the start point and the end point of the link where the position transmitter 20 is installed is actually measured, and the position information and the position information are recorded on the data recording medium such as the nonvolatile memory 201 of each position transmitter 20 And also by causing the first microprocessor 202 to periodically generate the time information.

That is, the first microprocessor 202 of the position transmitter 20 reads the position information stored in the data recording medium and the distance information of the start point and the end point of the link and transmits the distance information along with the own time information to the first transmission module 200 To the probe vehicle 31 that modulates the frequency and runs the link.

Therefore, the second microprocessor 302 of the high-frequency terminal device 30 mounted on the probe vehicle 31 transmits only the position information, the distance information, and the time information received through the receiving module 300, It is possible to recognize the position of the vehicle 31 and the starting and ending points of the link and recognize the traveling distance and traveling time from the starting point to the ending point of the link.

After determining the running speed with the thus recognized mileage and traveling time, they can be frequency-modulated by the second transmission module 306 and transmitted to the central center 50 as described above.

On the other hand, as a comparative example, a conventional technique, that is, a radio wave emitted from a plurality of satellites is received at a probe vehicle, a position is calculated, and the calculated position information is wirelessly collected from a map server of a center center. Unlike the case where the travel information is obtained by mapping the start point and the end point of the link on the electronic map, the present invention can be applied to all roads in which the position transmitting device installed at the start point and the end point of the link wirelessly propagates its own position information, The high frequency terminal device of the vehicle receives it and finds the distance and the time and speed required for traveling the link.

As a result, according to the present invention, it is possible to solve the error of the distance according to the GPS satellite and the GPS terminal device and to solve the problem that the current position of the probe vehicle is not confirmed due to the movement of the visible region, It can be seen that the increase in the communication cost caused by the transmission of the location information of the vehicle can be minimized.

As described above, in the present embodiment, as a traffic information system, a sufficient number of driven vehicles are driven, and a link-specific travel time or traveling speed calculated by a probe vehicle is collected in a database at a central center using a separate wireless communication means, It is possible to accurately recognize and manage the average travel time and traveling speed of each link with respect to the whole without any error so that the measurement distance error due to the use of GPS satellites and GPS terminal devices of the related art and the communication cost The position information can not be received in the ascending and visible regions.

According to this application example, it is possible to quickly and accurately collect the degree of stagnation of the entire road and inform the driver of the degree of stagnation of the entire road, thereby distributing the vehicle to less congested roads or distributing the time zone.

While specific embodiments of the invention have been illustrated and described, it will be obvious that the same may be varied in many ways by those skilled in the art.

Such modified embodiments should not be understood individually from the technical idea and viewpoint of the present invention, and such modified embodiments should be included in the appended claims of the present invention.

It will be apparent from the above description that the method and apparatus for collecting traffic information according to the present invention collects the traveling speed and traveling time for each road on all roads by using the location transmitting device installed on the roadside and the high frequency terminal device of the probing vehicle The following effects can be obtained.

1. By receiving the radio signal of the position transmitter on the road, the probing vehicle, which is driving the road, can collect the travel time and speed of each road very precisely so that the driver can get the fastest route to the destination .

2. Notify the expected time to the destination without using GPS satellites and GPS terminal devices, so the driver can save a lot of time and expenses and reduce energy consumption accordingly.

3. It is possible to accurately detect the traffic flow by time of day, so that it can design and operate the road efficiently and it can reduce the investment cost for collecting traffic information.

Claims (21)

(1) a location information transmission process of transmitting position information of the link to the probing vehicles by installing a position transmitting device at a starting point and an end point of the link with respect to all the roads; (2) an information reception / classification search process of continuously receiving and classifying the position information of the link and the strength of the received signal by receiving the transmission signal at the corresponding position while traveling on the road; (3) calculating the time, distance, and speed required for traveling the link with the recognized information by recognizing the position of the probable vehicles and the start and end points of the link along with the search result, Transmission process; And (4) a traffic information management step of receiving and managing the link-specific travel information, calculating and representing representative values of the link-specific travel information, and recognizing and managing traffic flow information for the entire road; Traffic information collection method. The method according to claim 1, If the condition of the received position information and the signal strength is abnormal, the position information and the signal strength of the position transmitter positioned at the start and end points of the normally received link are received and classified and searched And a traffic information collection method. 3. The method of claim 2, Wherein the location information is an identification of a location originating device installed at a start point and an end point of the link. 3. The method of claim 2, Wherein the location information is an absolute coordinate of a location of the location transmitter. The method according to claim 1, And the traveling information of the link traveled by the probe vehicle is transmitted after passing the end of the link. The method according to claim 1, Wherein the travel distance is a distance from a start point to an end point of the link, and the distance is obtained under the following conditions. Travel distance = n x I x 1 / m In the above condition, m is the number of pulses generated when the wheel of the probing vehicle makes one revolution, I is the circumference of the wheel, and n is the total number of pulses of the distance traveled from the starting point to the end point of the probing vehicle. The method according to claim 1, Wherein the travel time is a time required to travel from a start point of the link to an end point of the link, and the time is obtained as a value of a timer. The method according to claim 1, Wherein the running speed is a speed from a start point to an end point of the link, and the running speed is obtained by dividing the running distance and the running time. The method according to claim 1, And the traffic information of the link is transmitted using either the public network or the roadside communication beacon. (1) a link information transmission process of installing a position transmitting device at a start point and an end point of a link for all roads, and transmitting position information of the link, distance information between a starting point and an end point of the link, and time information to probing vehicles; (2) an information receiving / classifying step of receiving the transmission signal at the corresponding position while traveling on the road, and classifying the position information, the distance information, and the time information of the link, respectively; (3) recognizing a start point and an end point of the link as the positional information of the classified link, and classifying the travel time and the mileage of the link with the classified time information and distance information obtained at the time of traveling from the start point to the end point of the recognized link And a traveling information transmitting step of calculating a traveling speed and sending out the traveling information; And (4) a traffic information management process for receiving and storing the sent-out travel information for each link and for systematically storing the calculated traffic information for each link and calculating a representative value of the stored travel information for each link, And a traffic information collecting method. 11. The method of claim 10, The method of claim 1, further comprising the step of transmitting traffic flow information for all the roads managed through the communication network to the driver. 11. The method of claim 10, Wherein the location information is any one of a unique number of a location originating device installed at a starting point and an end point of the link or an absolute coordinate of a location of the location originating device. 11. The method of claim 10, Wherein the traveling speed of the link is a speed at which the probe vehicle travels from a starting point to an end point of the link and the speed is a distance between a start point and an end point of the link, Wherein the traffic information is obtained by dividing the traffic information by time. A location originating device installed at a start point and an end point of the link with respect to all the roads to transmit the location information to the probing vehicle traveling with the appropriate intensity; And a controller for detecting the travel distance and travel time required for the probe vehicle to travel on the link in accordance with the received position information, calculating the travel speed, and transmitting the calculated travel distance to the public network A high frequency terminal device for transmitting; A communication relay device for receiving and relaying the link-specific travel information collected while the vehicle is traveling from the public network; And And a central center for calculating an average value of a travel distance, a travel time, and a traveling speed for the link-specific travel information relayed through the communication relay device and managing traffic flow information on the entire road. . 15. The method of claim 14, The position transmitting device comprises: (1) a recording medium for receiving and storing location information of the link as a code value; (2) a first transmission module for modulating the location information encoded and stored in the recording medium at a high frequency and transmitting the modulated location information to the probing vehicle through an antenna; And (3) a first microprocessor for encoding the position information of the link and supplying the encoded information to the recording medium, and controlling the transmission operation of the first transmission module in a scheduled procedure at the time of transmitting the position information. Collecting device. 16. The method of claim 15, Further comprising data conversion means for converting the position information of the link, which is coded and stored in the recording medium, into a bit stream and outputting the bit stream to the first transmission module. 17. The method according to claim 15 or 16, Wherein the recording medium is a nonvolatile memory. 15. The method of claim 14, The high- (1) a receiving module that receives a signal transmitted from the position transmitter through an antenna, classifies the position information and the intensity of the signal from the received signal, and outputs the classified signal; (2) analog-to-digital conversion means for digitizing the intensity of the signal classified by the receiving module; (3) mileage detecting means for measuring a running distance of the driven vehicle and generating a pulse proportional to the running distance; (4) traveling time detecting means for measuring a time required for the driven vehicle to travel on the link; (5) a second microprocessor for calculating a traveling time, a traveling distance, and a traveling speed of the link with the position information classified by the receiving module, the digital value according to the intensity of the signal, and the measured distance and time; And (6) a second transmission module for modulating the information about the travel time, the travel distance, and the traveling speed of the link obtained by the second microprocessor at a high frequency and transmitting the modulated information to the communication relay device through the antenna, Information collecting device. 19. The method of claim 18, Wherein the traveling time detecting means comprises a timer for generating real time pulses. 15. The method of claim 14, The central center, (1) a communication server for receiving the link-specific travel information relayed by the communication relay device and detecting an error; And (2) systematically stores and analyzes the link-specific travel information obtained from the communication server, and calculates an average value of the travel distance, travel time, and travel speed for the link-specific travel information of the probe vehicles, And a database server for recognizing and managing traffic flow information. 15. The method of claim 14, Further comprising connecting the high-frequency terminal apparatus and the communication relay apparatus to the communication relay apparatus via a roadside communication beacon, and transmitting the traveling information of the link to the communication relay apparatus.