KR20070106273A - Server, system, and method for creating and providing traffic information - Google Patents

Abstract

A server, a system, and a method for creating and providing traffic information are provided to generate exact traffic information by producing a link traveling time and a link average speed using a vehicle recognition device. A server includes a network interface(210), a processor(220) and a storing unit(230). The network interface receives identification information of first and second vehicles(301,302) from first and second vehicle recognition devices(121,122) at specific positions of first and second links, respectively. The processor determines whether the first and second identification information are identical to each other, calculates one of an overall link traveling time and an overall link average speed when the first and second identification information are identical to each other, and transmits one of the overall link traveling time and the overall link average speed through the network interface. The storing unit stores the overall link traveling time and the overall link average speed.

Description

Traffic information generation and provision method and server and system thereof {SERVER, SYSTEM, AND METHOD FOR CREATING AND PROVIDING TRAFFIC INFORMATION}

1 is a block diagram of a traffic information generation and provision system according to the present invention.

FIG. 2 is an exemplary layout view of the speed detector Ve and the vehicle recognition devices Id shown in FIG. 1.

3 is a flowchart illustrating a traffic information generating method according to a first embodiment of the present invention.

4 is a flowchart illustrating a traffic information generating method according to a second embodiment of the present invention.

5 is a flowchart illustrating a traffic information providing method according to a third embodiment of the present invention.

** Main number of drawings **

111, 112: speed detector 121, 122: vehicle recognition device

200: server 301, 302 according to the present invention

410: wired / wireless network 420: base station

500: navigation terminal

The present invention relates to a method for generating and providing traffic information, and a server and a system thereof.

Recently, the road network has been gradually expanded due to the rapid increase of vehicles, but the road network has not been able to meet the increasing number of vehicles, and the traffic network is increasing.

Therefore, it is required to collect traffic information and to calculate accurate traffic volume statistics of the road network.

To this end, a speed detector is conventionally installed on a road to detect a moving speed of a vehicle, and traffic statistics are calculated based on the detected moving speed.

However, in the prior art, only the instantaneous speed of the moving vehicle can be measured through the speed detector, and accurate traffic information can be collected on a road where movement and stop are repeated due to signal waiting, such as a city road. There was no problem.

Therefore, an object of the present invention is to collect accurate traffic information of the road network. In addition, another object of the present invention is to provide a shortest way to the vehicle on the move using the traffic information.

Prior to describing the present invention, terms used in the present application are defined as follows.

Instantaneous Velocity of Each Link (IVEL): The instantaneous velocity measured by a speed detector at a particular point on an individual link.

Average Velocity of All Links (hereinafter referred to as AVAL): The average speed of all links calculated by vehicle identification. That is, the average speed of all links (AVAL) = the total distance of the links / the actual link actual travel time

Sensory Velocity of Each Link (hereinafter referred to as SVEL): A speed at which the average link speed (AVAL) is corrected using the instantaneous speed (IVEL) for each link.

Estimated Traveling Time of Each Link (hereinafter referred to as ETTEL): A time calculated by estimating the time required to move each link using the link-specific instantaneous speed (IVEL).

Real Traveling Time of All Link (RTTAL): The time it takes to actually travel the entire link.

Sensory Traveling Time of Each Link (hereinafter referred to as STTEL): A time for correcting the estimated travel time for each link (ETTEL) using the previous link real travel time (RTTAL).

Hereinafter, the present invention will be described.

The present invention receives the identification information of the first vehicle from the first vehicle recognition device installed at a specific point of the first link to achieve the above object, and the second vehicle recognition device installed at a specific point of the second link A network interface for receiving identification information of the two vehicles; It is determined whether the received identification information of the first and second vehicles are the same, and if the identification information of the first and second vehicles is the same, all the link rooms in which the vehicle has moved the first and second links. Compute and store at least one of a travel time (RTTAL) and an average link speed (AVAL), and recall one or more of the stored all link real travel time (RTTAL) and all link average speed (AVAL) at an external request. A processor for transmitting via a network interface; And storage means for storing the calculated total link real travel time (RTTAL) and total link average speed (AVAL).

In addition, the present invention receives the instantaneous speed and identification information of the first vehicle from the first speed detector and the first vehicle recognition device installed at a specific point of the first link, respectively, and the second speed detector installed at a specific point of the second link. And a network interface for receiving instantaneous speed and identification information of the second vehicle from the second vehicle recognition device, respectively. Stores the instantaneous speeds (IVEL) for each link of each of the received first and second links, determines whether the received identification information of the first and second vehicles are the same, and determines the first and second vehicles. If the identification information is the same, the vehicle calculates and stores the total link real travel time (RTTAL) and the total link average speed (AVAL) when the vehicle moved the first and second links, and for each stored link when requested externally. A processor for transmitting one or more of an instantaneous speed (IVEL), the full link room travel time (RTTAL), and the full link average speed (AVAL) through the network interface; And a storage means for storing the stored link-specific instantaneous speed (IVEL), the previous link actual travel time (RTTAL), and the previous link average speed (AVAL).

Preferably, the identification information may be a photographed image of a vehicle number.

Alternatively, the identification information may be information of a transmission signal or RFID of communication terminals mounted on the first and second vehicles.

The processor may calculate and store at least one of the link-specific instantaneous speed IVEL, the previous link actual travel time RTTAL, and the previous link average speed AVAL. The current traffic congestion degree of the first and second links may be calculated by comparing one or more of the previous link room travel time (RTTAL) and the average link speed (AVAL).

The processor may calculate the estimated movement time (ETTEL) for each link of each of the first and second links using the stored instantaneous speeds (IVELs) for each link. In this case, the processor may again correct the calculated estimated travel time (ETTEL) for each link. That is, the processor calculates a correction coefficient by comparing the calculated estimated movement time (ETTEL) for each link with the stored total link real travel time (RTTAL), and calculates the estimated movement for each link using the correction coefficient. The time ETTEL may be corrected again and stored as a tangible movement time STTEL for each link.

In addition, the processor may correct the calculated average link speed AVAL using the stored instantaneous speed IVEL. That is, the processor calculates a correction factor by comparing the calculated average link speed AVAL with the average speed of the stored instantaneous speed IVEL, and uses the correction factor to calculate the average link speed (AVAL). AVAL) can be calibrated and calculated and stored as a link reduction speed (SVEL).

The server calculates the total link average speed (AVAL), the instantaneous speed per link (IVEL), the perception link speed (SVEL) for each link, the total link real travel time (RTTAL), and the estimated movement for each link calculated as described above. Map one or more of the time (ETTEL) and the haptic movement time (STTEL) per link to maps on the map, it can be built into a database, the request for route guidance to the destination using the established database 3 Can provide directions to vehicles.

On the other hand, the present invention comprises the steps of: a) detecting the instantaneous speed of the first vehicle through a first speed detector installed at a specific point of the first link; b) identifying the first vehicle via a first vehicle identification device installed at a particular point of the first link; c) detecting the instantaneous speed of the second vehicle through a second speed detector installed at a particular point of the second link; d) identifying the second vehicle via a second vehicle recognition device installed at a particular point of the second link; e) indexing and storing the link-specific instantaneous velocities (IVELs) detected in steps a) and c); f) monitoring whether the first and second vehicles identified at particular points of each of the first and second links are identical to each other; g) when the same of the first and the second vehicle is obtained, calculating one or more of the total link real travel time (RTTAL) and the total link average speed (AVAL), and storing the index. It also provides a method of generating traffic information.

Preferably, the identification information may be a photographed image of a vehicle number.

Alternatively, the identification information may be information of a transmission signal or RFID of communication terminals mounted on the first and second vehicles.

Computing at least one of the all-link actual travel time (RTTAL) and the all-link average speed (AVAL) may be performed at a time when the same vehicle is identified at a specific point of the first link and at a specific point of the second link. It can be achieved by using the difference of time.

On the other hand, the traffic information generating method comprises the steps of calculating the estimated travel time (ETTEL) for each link of each of the first and second links using the instantaneous speed (IVEL) for each link; The method may further include correcting the calculated estimated travel time for each link by using the previous link real travel time RTTAL and storing the estimated travel time for each link as a tangible travel time for each link.

The traffic information generating method may further include correcting the calculated all link average speed AVAL using the instantaneous speed IVEL for each link, and calculating and storing the calculated link average speed ALV as a tangible speed SV for each link. have.

On the other hand, the present invention is the average link speed (AVAL), the instantaneous speed per link (IVEL), the tangible speed (SVEL) per link, the previous link room travel time (RTTAL), Mapping at least one of the estimated link travel time (ETTEL) and the link link travel time (STTEL) to links on a map, respectively, to construct a database; It also provides a navigation method comprising the step of providing the route guidance to the third vehicle requesting the route guidance to the destination using the established database.

Example

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention will be described in detail.

1 is a block diagram of a traffic information generation and provision system according to the present invention.

As can be seen with reference to FIG. 1, a system according to the present invention includes a first and a second speed detectors 111 and 112, a first and a second vehicle recognition devices 121 and 122, and a server 200. ), First and second vehicles 301 and 302, a network 410, a base station 420, and a navigation terminal 500.

The first speed detector (hereinafter referred to as Ve) 111 is installed at a specific point on the first link (or road), and the second speed detector (Ve) 112 is connected to the second link (or road). Installed at a specific point on The first and second speed detectors (Ve) 111 and 112 are connected to the server 200 through the network 410. The first and second speed detectors 101 may be configured as a vehicle detection system (VDS) or may utilize any device for collecting instantaneous speeds.

The first and second first and second speed detectors (Ve) 111 and 112 are moments of the first and second vehicles 301 and 302 that are moving at specific points of the first and second links. Each of the speeds may be measured and transmitted to the server 200.

The first vehicle recognition device (hereinafter referred to as Id) 121 is installed at a specific point on the first link (or road), and the second vehicle recognition device (Id) 122 is connected to the second link. It may be installed at a specific point on the road (or road). The first and second vehicle recognition devices (Id) 121 and 122 are connected to the server 200 through the network 410.

The first and second means of transport identifiers (Id) 121 and 122 are configured to identify the first and second means of transportation 301 and 302, respectively, that are traveling at a specific point on the first and second links. The identification information may be identified using the identification information of the first and second transportation means 301 and 302.

In this case, the identification information may be, for example, a vehicle number of the first and second transportation means 301 and 302, or an identification signal of a communication terminal mounted on the first and second transportation means 301 and 302, or the It may be information of RFID mounted on the first and second transportation means 301 and 302.

When the identification information is the vehicle number, the first and second vehicle recognition devices (Id) 121 and 122 may recognize vehicle numbers of the first and second vehicles 301 and 302. It may be composed of an automatic vehicle identification (AVI). In order to understand the vehicle number recognition process for a while, the first and second vehicle recognition devices (Id) 121 and 122 are first connected to the first and second vehicles 301 on the first and second links. And after detecting movement of the vehicle 302, and photographing the vehicle numbers of the first and second vehicles 301 and 302, respectively, when movement is detected.

When the identification information is an identification signal of the communication terminal, the vehicle recognition apparatuses 121 and 122 may be roadside devices formed of an RF type or an infrared type receiving device. Here, the short-range communication method of the RF or infrared method is obvious to those skilled in the art to which the present invention belongs, and will not be described in detail. In order to understand the reception operation of the identification signal for a while, the first and second vehicle recognition apparatuses (Id) 121 and 122 are similar to the above, first, the first and second links in the first and second links. After detecting the movements of the first and second vehicles 301 and 302, respectively, if the movement is detected, a request signal is transmitted to the communication terminals mounted on the first and second vehicles 301 and 302, and as a response signal. Receiving the identification signal of the communication terminal can be recognized.

On the other hand, when the identification information is RFID information, the first and second vehicle recognition devices (Id) 121 and 122 may be configured as an RFID reader. The operation of the RFID reader is obvious to those of ordinary skill in the art to which the present invention pertains, and thus it will not be described in detail.

On the other hand, the server 200 via the network 410, the first and second speed detector (Ve) (111 and 112), and the first and second vehicle recognition device (Id) 121 and 122). The server 200 may include a network interface 210, a processor 220, and a storage device 230.

The network interface 210 of the server 200 includes the first and second measured at specific points on the first and second links by the first and second speed detectors (Ve) 111 and 112. The link-specific instantaneous speeds (ISEL) of the vehicles 301 and 302 may be received and transmitted to the processor 220 of the server. In addition, the network interface 210 may be configured to move the first and second vehicles 301 and mov from the first and second vehicle identification devices (Id) 121 and 122 to a specific point on the first and second links. The identification information of 302 may be received and transmitted to the processor 220 of the server.

The processor 220 of the server 200 indexes each of the instantaneous speeds (ISELs) transmitted through the network interface 210, maps them to specific links on the electronic map, and stores them in the storage means 230. Can be. That is, the processor 220 may store the instantaneous speed ISEL for each link measured at a specific point of the first link. The processor 220 may store an instantaneous speed ISEL for each link measured at a specific point of the second link. However, this link-specific instantaneous speed (IVEL) may have an error. That is, the instantaneous speed of the first link may be in error with the average speed when the first vehicle 301 moves all the points of the first link, and the instantaneous speed of the second link is determined by the second vehicle ( There may be an average speed error when 302 moves through all the points of the second link. Therefore, rather than being used alone, the instantaneous speed (IVEL) for each link is preferably used to correct the average average speed (AVAL) of all links, which can be calculated as described below.

The processor 220 may determine whether identification information of the first and second vehicles 301 and 302 received from the vehicle recognition apparatus through the network interface 210 is the same. When the identification information of the first and second vehicles 301 and 302 is the same as each other, the processor 220 starts from the first link and connects to the second link. By determining that it has reached, the total link real travel time (RTTAL) from the first link to the second link can be calculated and stored in the storage means (230). Here, the calculation of the total link real travel time (RTTAL) is achieved by using the difference between the times when the vehicles 301 and 302 are recognized at a specific point of the first link and the times recognized at a specific point of the second link. Can be.

In addition, the processor 220 may calculate the total link average speed AVAL of all the first and second links using the all-link real travel times (RTTALs) and store the same in the storage means 230. . In this case, the calculated average link average speed AVAL may be corrected using the instantaneous speed IVEL for each link as described above. Referring to this correction process, first, the processor 220 calculates a correction coefficient by comparing the calculated average speed of all links AVAL with average speeds of the stored instantaneous speeds IVEL. Subsequently, the processor 220 may correct the entire link average speed AVAL by using the correction coefficient, and store it in the storage means 230 as a link-like sensation speed SVEL.

On the other hand, the processor 220 may calculate the estimated movement time (ETTEL) for each link of the first and second links by using the stored instantaneous speed (IVEL) for each link and store the calculated movement time (ETTEL) in the storage means 230. have. In this case, the estimated movement time (ETTEL) for each link may be corrected again because there is an error with the actual time required for the vehicles 301 and 302 to move the first and second links, respectively. Referring to this correction process, first, the processor 220 calculates a correction coefficient by comparing the stored total link real travel time (RTTAL) with the calculated total link estimated travel time (ETTEL). In this case, the correction coefficient may be calculated by comparing the average speed of all the link average speeds AVAL and the instantaneous speeds of the links. Subsequently, the processor 220 may correct the estimated estimated moving time ETTEL for each link by using the correction coefficient and store it in the storage means 230 as a tangible movement time STTEL for each link.

On the other hand, the processor 220 is the average link speed (AVAL), the instantaneous speed (IVEL) for each link, the sensory speed (SVEL) for each link, the actual link real time (RTTAL), the estimated movement for each link At least one of a time ETTEL and a tangible movement time STTEL for each link is previously calculated and stored in the storage means 230, the average link speed AVAL, the instantaneous speed per link IVEL, and The first and second comparison speeds are compared with one or more of the SVD, the total link real travel time RTTAL, the estimated link travel time ETTEL per link, and the link travel time STTEL. The current traffic congestion of each of the two links may be analyzed, and the analyzed traffic congestion may be stored in the storage means 230.

Further, the processor 220 according to an external request, the average link speed (AVAL), the instantaneous speed per link (IVEL), the tangible speed (SVEL) per link, stored in the storage means 230, the One or more of a total link real travel time (RTTAL), the estimated travel time per link (ETTEL), the tangible travel time per link (STTEL), and traffic congestion may be transmitted through the network interface 210. That is, by providing the information to a third vehicle (not shown) to enter the first link or the second link, the third vehicle can select a route.

On the other hand, the processor 220 is the average link speed (AVAL), the instantaneous speed (IVEL) for each link, the sensory speed (SVEL) for each link, the actual link real time (RTTAL), the estimated movement for each link At least one of a time ETTEL, a per-link haptic movement time STTEL, and a traffic congestion map may be mapped to links on a map, and a database may be constructed in the storage means 230. In addition, the processor 220 may provide a route guidance to the navigation terminal 500 requesting route guidance to a destination by using the database constructed as described above.

The navigation terminal 500 is a unit capable of requesting the server 500 for route guidance to a destination through the base station 420. The navigation terminal 500 can be easily implemented by those skilled in the art, and will not be described in detail.

So far, the configuration of the system according to the present invention has been described with reference to FIG. 1. Hereinafter, a description will be given with reference to FIG. 2.

FIG. 2 is an exemplary layout view of the speed detector Ve and the vehicle recognition devices Id shown in FIG. 1.

As can be seen with reference to Fig. 2, speed detectors Ve are exemplarily provided at each specific point on the A, B, D, F links. Here, the speed detector may not be installed on the C, E links as shown. The vehicle identification device Id is provided at the start point on the A link and the end point on the F link, respectively. Here, it should be noted that, as shown, the number of the speed detector Ve and the number of the vehicle recognition devices Id may not match.

Vehicles 303 and 304 are respectively moving on the A and F links.

Hereinafter, in such a situation as shown in Fig. 2, how the system according to the present invention can operate will be described by way of example.

First, assume that the lengths of the A, B, C, and D links are 3 km each.

The speed detector Ve installed at specific points on the A link, the B link, the D link, and the F link sets the instantaneous speeds of any moving vehicles at 60 Km / h, 60 Km / h, and 50 Km /, respectively. h, and 40 Km / h, suppose that the transmission to the server 200 of FIG.

Then, the server 200 is the instantaneous speed (IVEL) per link, that is, the instantaneous speed movable on the A link is 60Km / h, the instantaneous speed movable on the B link is 60Km / h, the D link The instantaneous speed of movement on the F link is 50 km / h, and the instantaneous speed of movement on the F link is 40 km / h, and will be stored in the storage means 230, respectively.

Subsequently, the server 200 calculates the estimated movement time ETTEL for each link by using the measured instantaneous speeds IVEL. That is, since the lengths of the A, B, D, and F links are each 3 km, the server 200 may calculate the estimated movement time (ETTEL) for each link as follows. At this time, since the speed detector does not exist on the C link and the E link, the estimated travel time (ETTEL) for each link cannot be calculated.

Since the speed detector Ve of the A link detects 60 km / h, the server 200 calculates the estimated movement time ETTEL of the A link to 180 seconds.

Since the speed detector Ve of the B link detects 60 km / h, the server 200 calculates the estimated movement time ETTEL of the B link to 180 seconds.

Since the speed detector Ve of the D-link detects the 50 Km / H speed, the server 200 calculates the estimated movement time ETTEL of the D-link to 216 seconds.

Since the speed detector Ve of the F link detects the 40 Km / H speed, the server 200 calculates the estimated travel time ETTEL of the F link to 270 seconds.

On the other hand, it is assumed that the vehicle identification device (Id) of the A link recognizes the moving vehicle 303 at 12:00:00 pm and then transmits it to the server 200. In addition, it is assumed that the vehicle recognition device Id of the F link recognizes the moving vehicle 304 at 12:30:00 PM and then transmits it to the server 200.

Further, suppose that the server 200 monitors that the vehicles 303 and 304 respectively recognized by the vehicle identification devices Id on the A and F links are the same.

Then, the server 200 uses the difference between the time when the vehicles 303 and 304 are recognized on the A link and the time when the vehicle 306 is recognized on the F link, so that the entire link room travel time is obtained. (RTTAL) That is, it can be calculated that the actual travel time from the A link to the F link is 30 minutes.

In addition, the server 200 may calculate an average link speed AVAL by using the total link room movement time (RTTAL) 30 minutes. That is, the server 200 may calculate the total link average speed (AVAL) to 36 Km / h since the length from the A link to the F link is 18Km, and the speed = distance / time. Thus, the average speed of each of the A, B, C, D, E, and F links is also 36 Km / h.

However, since the total link average speed AVAL thus obtained may have an error, the link average speed AVAL may be corrected through the received and stored link-specific instantaneous speed IVEL, and may be calculated as the link-specific sensory speed SVEL. To this end, the server 200 has an average speed of 36 km / h, which is the average link speed (AVAL), and instantaneous speeds per link (IVEL), that is, average speeds of the instantaneous speeds of the A, B, C, and D links. It is calculated that there is a difference of 148.83% between 52.5 Km / h, and the average link speed AVAL is corrected using the 148.83% as a correction factor to calculate the link speed reduction rate SV.

First, when the server 200 corrects the average speed of 36Km / H of the link A, the link-like speed (SVEL) of the link A is 52.5Km / H.

When the server 200 performs correction for the average speed of 36 km / h of the B link, the link speed reduction rate (SVEL) of each link of the B link is 52.5 km / h.

When the server 200 performs correction for the average speed of 36Km / H of the C link, the link speed reduction rate (SVEL) of each of the C links is 52.5Km / H.

When the server 200 performs correction for the average speed of 36Km / H of the D-link, the link-like sensation speed SVEL of the D-link is 52.5Km / H.

When the server 200 corrects the average speed of 36Km / H of the E-link, the link-like sensation speed SVEL of the E-link is 52.5Km / H.

Finally, if the server 200 performs correction for the average speed of 36Km / H of the F link, the link-like speed (SVEL) of the F link is 52.5Km / H.

In this example, all of the same values are calculated because they are set by way of example. In the actual road, information of several links is used, and since each link has a different distance, all different values will be calculated.

On the other hand, the calculated total link average speed AVAL may be used to correct the estimated moving time ETTEL for each link. That is, since the estimated moving time (ETTEL) for each link, which is calculated and stored, differs from the actual link real travel time (RTTAL) that is actually required when the vehicle actually moves each link, the average link speed of the previous link ( AVAL) may be used to correct the estimated movement time (ETTEL) for each link to calculate the tangible movement time (STTEL) for each link.

To this end, the server 200 has the calculated average link speed (AVAL) of 36 km / h and the per-link instantaneous speeds (IVEL) of 60 km / h, 60 km / h, 50 km / h, and 40 km / h. It is calculated that there is a difference of 148.83% between 52.5 km / h, which is an average speed, and the server 200 corrects the estimated travel time (ETTEL) for each link by using the 148.83% as a correction factor, thereby reducing the link experience. Calculated by the movement time (STTEL). In this case, the correction coefficient may be calculated using the previous link room travel time (RTTAL) as described above.

First, when the server 200 corrects the estimated link movement time (ETTEL) 180 seconds for each link, the link movement time (STTEL) is 263 seconds.

Subsequently, when the server 200 corrects the estimated link movement time (ETTEL) 180 seconds per link of the B link, the sensory movement time (STTEL) per link becomes 263 seconds.

Subsequently, when the server 200 corrects the estimated link movement time (ETTEL) 216 seconds of the link E, the link movement time (STTEL) is 315 seconds.

Finally, if the server 200 corrects the estimated link movement time (ETTEL) 270 seconds of the F link, the link movement time (STTEL) is 394 seconds.

On the other hand, the link-specific instantaneous speed (IVEL) and the link-like diminishing speed (STEL) may be synthesized, and converted into final traffic information for providing. Here, there may be a number of techniques for synthesizing the information, but in the present invention, the weighted average method is used and the weights are the same.

First, the final traffic information for the link A, the final speed of the link (IVEL) 60Km / h and the link speed decrease (STEL) 52.5Km / h, the final 56.25Km / H, and final travel The time is set to 192 seconds.

The final traffic information for the B link is determined by combining 56.25Km / h of the per-link instantaneous speed 60L / h and 52.25Km / h of the link-elevating speed STEL, and the final travel time is 192. Confirm with seconds.

The final traffic information for the C link is determined by combining 5 Km / h of the per-link instantaneous speed (IVEL) and 52.25 Km / h of the per-link speed (STEL) of 52.5 km / h. Confirm with 206 seconds.

The final traffic information for the D-link is composed of 50 Km / h of the per-link instantaneous speed (IVEL) and 52.25 Km / h of the per-link diminishing speed (STEL), and determined to be 52.5 Km / H, and the final travel time is Set to 211 seconds.

The final traffic information for the E-link is determined to be 56.25Km / H by combining the IVEL 0Km / h with each link and the 52.25Km / h STEL with each link, and the final travel time is 206 seconds. Confirm.

The final traffic information for the F-link is determined to be 46.25Km / H by combining 40 Km / h of the per-link instantaneous speed (IVEL) and 52.25 Km / h of the per-link speed (STEL), and the final travel time is 233 seconds. Confirm.

Up to now, exemplary operation of the system according to the present invention has been described with reference to FIG. Hereinafter, a method and a method of providing traffic information according to the present invention will be described with reference to FIGS. 3 to 5.

3 is a flowchart illustrating a traffic information generating method according to a first embodiment of the present invention.

As can be seen with reference to FIG. 3, the traffic information generation method according to the first embodiment of the present invention recognizes vehicles at different points and then monitors whether the vehicles recognized at the different points are the same vehicle. , The total link real travel time (RTTAL) and the total link average speed (AVAL) are calculated.

More specifically, first, the first vehicle 301 is recognized through the first vehicle recognition device (Id) 121 installed at a specific point of the first link (S1101).

Subsequently, the second vehicle 302 is recognized through the second vehicle identification device (Id) 122 installed at a specific point of the second link.

Then, it is determined whether the vehicle 302 recognized in the second link is the same vehicle as the vehicle 301 recognized in the first link (S1103).

When it is determined that the vehicle is the same according to the determination (S1103), the vehicle calculates the total link room travel time (RTTAL) taken from the first link to reach the second link (S1104). .

The average link speed AVAL of the first and second links is calculated using the previous link real travel time RTTAL (S1105).

Finally, the previous link real travel time (RTTAL) and the previous link average speed (AVAL) are indexed and stored (S1106).

4 is a flowchart illustrating a traffic information generating method according to a second embodiment of the present invention.

As can be seen with reference to Figure 4, the traffic information generation method according to the second embodiment of the present invention by detecting the instantaneous speed of movement of the vehicle at different points, respectively, the instantaneous speed (IVEL) per link and the link-specific estimation Compute and store the travel time (ETTEL), and also recognize the vehicle at the different points and monitor whether it is the same vehicle, thereby calculating the total link room travel time (RTTAL) and the average link speed (AVAL). It is characterized by calculating the tangible speed of each link (SVEL), and tangible haptic movement time (STTEL).

More specifically, first, the instantaneous speed of the first vehicle 301 is detected through the first speed detector Ve 111 installed at a specific point of the first link (S1201).

Subsequently, the first vehicle 301 is recognized through a first vehicle recognition device (Id) 121 installed at a specific point of the first link (S1202).

Next, an instantaneous speed of the second vehicle 302 is detected through the second speed detector Ve 112 installed at a specific point of the second link (S1203).

Subsequently, the second vehicle 302 is recognized through the second vehicle identification device (Id) 122 installed at a specific point of the second link (S1204).

Next, index-by-link instantaneous velocities (IVELs) detected at specific points of the first and second links are indexed and stored (S1205).

In addition, the estimated movement time ETTEL for each link is calculated and stored using the detected instantaneous speeds IVEL in operation S1206.

Next, it is determined whether the second vehicle 302 recognized in the second link is the same vehicle as the second vehicle 301 recognized in the first link (S1207).

When it is determined that the first and second vehicles 301 and 302 are identical to each other according to the determination S1207, the first and second vehicles leave the first link and reach the second link. The total link real travel time (RTTAL) and the total link average speed (AVAL) taken to calculate the data are calculated (S1208).

The estimated link travel time (ETTEL) for each link is corrected using the previous link real travel time (RTTAL) to calculate the link travel time (STTEL) for each link, and the all links are used for the instantaneous speed (IVEL) for each link. The average speed AVAL is corrected and calculated as the link reduction speed SVEL (S1209).

Finally, the average link speed (AVAL), the instantaneous speed (IVEL) for each link, the sensory speed (SVEL) for each link, the actual link real travel time (RTTAL), the estimated travel time (ETTEL) for each link, In operation S1210, the tangible movement time STTEL for each link is indexed and stored.

5 is a flowchart illustrating a traffic information providing method according to a third embodiment of the present invention.

First, the instantaneous speed IVEL for each link is detected through the speed detector Ve installed at a specific point of each link on the map (S2101).

Subsequently, the total link room travel time (RTTAL) spent by the specific vehicle is detected through the vehicle identification device Id installed at the specific points of the links on the map (S2102).

Thereafter, the estimated link travel time (ETTEL) for each link is corrected using the previous link real travel time (RTTAL) to calculate the tangible travel time (STTEL) for each link, and the all links using the instantaneous speed (IVEL) for each link. The average speed AVAL is corrected and calculated as the link reduction speed SVEL (S2103).

In addition, the calculated data, that is, the average link speed AVAL, the instantaneous speed IVEL for each link, the sensory speed SVEL for each link, the actual link real travel time RTTAL, and the link estimate The movement time ETTEL and the haptic movement time STTEL for each link are matched with each link on the map (S2104).

Then, it is monitored whether to receive a directions request from the outside (S2105).

According to the monitoring (S2105), when receiving a directions guidance request from the outside, the shortest time link to the destination is calculated using the data matched to each link on the map (S2106).

Subsequently, the data is transmitted along with the calculated shortest time link (S2107).

The method according to the invention described thus far can be implemented in software, hardware, or a combination thereof. For example, the method according to the present invention may be stored in a storage medium (eg, mobile terminal internal memory, flash memory, hard disk, etc.) and may be stored in a processor (eg, mobile terminal internal microprocessor). It may be implemented as codes or instructions in a software program that can be executed by.

In the above description of the preferred embodiments of the present invention by way of example, the scope of the present invention is not limited only to these specific embodiments, the present invention is in various forms within the scope of the spirit and claims of the present invention Can be modified, changed, or improved.

The present invention has the advantage that it is possible to collect more accurate traffic information by using the vehicle identification device (Id), it is possible to calculate the total link room travel time (RTTAL) and the total link average speed (AVAL). In addition, the present invention has the advantage of using the vehicle recognition device (Id) and the speed detector (Ve), it is possible to calculate the per-link haptic speed (SVEL) and per-link haptic movement time (STTEL). In particular, the present invention, when the vehicle identification device (Id) is configured as an automatic vehicle identification device (AVI) currently expanded in the road network, there is an advantage that can accurately collect traffic information, without additional costs Has

Claims (24)

A network interface for receiving identification information of the first vehicle from a first vehicle identification apparatus installed at a specific point of the first link and receiving identification information of the second vehicle from a second vehicle identification apparatus installed at a specific point of the second link; ; It is determined whether the received identification information of the first and second vehicles are the same, and if the identification information of the first and the second vehicles are the same, all link room travel time (RTTAL) and all link average speed (AVAL). A processor that calculates and stores at least one of () and transmits at least one of the stored all-link real travel time (RTTAL) and all-link average speed (AVAL) through the network interface upon an external request; And storage means for storing the calculated total link real travel time (RTTAL) and total link average speed (AVAL). Receive instantaneous speed and identification information of the first vehicle from the first speed detector and the first vehicle recognition device installed at the specific point of the first link, respectively, and the second speed detector and the second vehicle recognition installed at the specific point of the second link, respectively. A network interface for receiving instantaneous speed and identification information of the second vehicle from the device, respectively; Stores the instantaneous speeds (IVEL) for each link of each of the received first and second links, determines whether the received identification information of the first and second vehicles are the same, and determines the first and second vehicles. If the identification information is the same, one or more of the total link room movement time (RTTAL) and the total link average speed (AVAL) are calculated and stored, and when the external request is made, the stored link-specific instantaneous speed (IVEL) and all link rooms A processor for transmitting at least one of a travel time (RTTAL) and a full link average speed (AVAL) through the network interface; And storage means for storing the stored instantaneous speed per link (IVEL), all link real travel time (RTTAL), and all link average speed (AVAL). The method according to claim 1 or 2, The identification information is a server, characterized in that the photographed image of the vehicle number. The method according to claim 1 or 2, And said identification information is a transmission signal of a communication terminal mounted in said first and second vehicles. The method according to claim 1 or 2, And the identification information is information of RFID mounted on the first and second vehicles. The processor of claim 1 or 2, wherein the processor is: The stored link-specific instantaneous speed (IVEL) previously stored at least one of the stored link-specific instantaneous speed (IVEL), the previous link actual travel time (RTTAL), and the previous link average speed (AVAL), and A current traffic congestion degree of the first and second links is calculated in comparison with at least one of a real link real travel time (RTTAL) and the average full link speed (AVAL). The system of claim 2, wherein the processor is Compensation coefficient is calculated by comparing the calculated average speed of all links (AVAL) with average speeds of the stored instantaneous speeds (IVEL), and correcting the average speed of all links (AVAL) by using the correction coefficients. Server, characterized in that for calculating and storing as link speed (SVEL). The system of claim 2, wherein the processor is After the estimated movement time (ETTEL) of each link of each of the first and second links is calculated using the stored instantaneous speeds (IVEL) of each link, the total of the calculated estimated movement time (ETTEL) of the link and the Compensation coefficients are calculated in comparison with the actual link actual travel time (RTTAL), and the calculated estimated travel time (ETTEL) for each link is corrected using the correction coefficient, and calculated and stored as a link-like travel time (STTEL). Server characterized in that. The method according to any one of claims 1, 2, 7, or 8, The average link speed (AVAL), the instantaneous speed (IVEL) per link, the decrease speed (SVEL) per link, the actual link travel time (RTTAL), the estimated travel time (ETTEL) per link, and the Map one or more of the phantom travel time (STTEL) to the links on the map, can be built into a database, The server, characterized in that for providing a route guidance to the third vehicle requesting a route guidance to the destination using the established database. A first speed detector installed at a particular point on the first link; A first vehicle recognition device installed at a specific point of the first link; A second speed detector installed at a particular point on the second link; A second vehicle recognition device installed at a specific point of the second link; A server comprising: a) receiving the instantaneous speed and identification information of a first vehicle from said first speed detector and a first vehicle recognition device, and the instantaneous speed and identification of a second vehicle from said second speed detector and second vehicle recognition device. A network interface for receiving information; b) storing the instantaneous speeds (IVEL) for each link of each of the received first and second links, determining whether the received identification information of the first and second vehicles are the same, and the first and second links. When the identification information of the vehicle is the same, the total link real travel time (RTTAL) and the average link average speed (AVAL) are calculated and stored, and when the external request is made, the stored instantaneous speed (IVEL) and the previous link are stored. A processor for transmitting one or more of a real travel time (RTTAL) and the full link average speed (AVAL) over the network interface; c) storing means for storing the instantaneous speed per link (IVEL), the full link real travel time (RTTAL), and the full link average speed (AVAL); System comprising a. a) detecting the instantaneous speed of the first vehicle through a first speed detector installed at a particular point of the first link; b) recognizing the first vehicle through a first vehicle recognition device installed at a specific point of the first link; c) detecting the instantaneous speed of the second vehicle through a second speed detector installed at a particular point of the second link; d) recognizing the second vehicle through a second vehicle recognition device installed at a specific point of the second link; e) indexing and storing link-specific instantaneous velocities (ISELs) of the first and second links detected in steps a) and c), respectively; f) monitoring whether the first and second vehicles recognized at each specific point of each of the first and second links are identical to each other; g) when the same of the first and the second vehicle is obtained, calculating at least one of an all-link actual travel time (RTTAL) and an all-link average speed (AVAL), and storing the index. How information is generated. The method of claim 11, B) and d) are traffic information generation method, characterized in that by photographing the vehicle number of the first and the second vehicle to recognize. The method of claim 11, B) and d) are traffic information generation methods, characterized in that the recognition through the transmission signal of the communication terminals mounted on the first and second vehicles. The method of claim 11, And b) and d) recognizing RFID mounted on the first and second vehicles. The method of claim 11, In the step g), the same link room travel time (RTTAL) and the previous link average are calculated using a difference between the time at which the same vehicle is recognized at a specific point of the first link and the time recognized at a specific point of the second link. Traffic information generation method comprising calculating at least one of the speed (AVAL). The method of claim 11, Calculating and storing the total link average speed AVAL calculated in the step g) using the link instantaneous speed IVEL calculated in the step e) and storing and storing the link average speed SVEL as a link-like sensation speed SVEL. Traffic information generation method characterized in that it further comprises. 17. The method of claim 16, wherein the link speed reduction (SVEL) calculation process Calculating a correction factor by comparing the average speed of all link average speeds (AVAL) and average speeds of the per-link instantaneous speeds (IVEL) calculated in step e); And calculating and storing the link average speed (AVAL) by using the calculated correction coefficient, and storing the calculated link speed as a reduced speed (SVEL) for each link. The method of claim 11, Calculating an estimated movement time (ETTEL) for each link of each of the first and second links by using the index-to-link instantaneous velocities (IVELs) stored in the step e); Correcting the calculated estimated travel time for each link (ETTEL) using the previous link room travel time (RTTAL) stored in the step g), and calculating and storing the calculated link travel time (STTEL) for each link. Traffic information generation method, characterized in that. 19. The method of claim 18, wherein the step-by-link movement time (STTEL) calculation step Calculating a correction coefficient by comparing the calculated total link movement time (ETTEL) with the total link real travel time (RTTAL) stored in step g); And calculating and storing the estimated movement time (ETTEL) for each link by using the calculated correction coefficient and calculating and storing the estimated movement time (STTEL) for each link. The method according to any one of claims 11 to 19, The average link speed (AVAL), the instantaneous speed per link (IVEL), the sensory speed per link (SVEL), the actual link real travel time (RTTAL), the estimated travel time per link (ETTEL), and the link The previous link average speed (AVAL), the instantaneous speed per link (IVEL), the tangible speed (SVEL) per link, and the previous link room travel time (RTTAL), which previously stored at least one of each tangible movement time STTEL Comparing with one or more of the estimated travel time per link (ETTEL) and the experienced travel time per link (STTEL); And analyzing and storing the current traffic congestion levels of the first and second links according to the comparison. According to the method of any one of claims 11 to 19, The average link speed (AVAL), the instantaneous speed per link (IVEL), the sensory speed per link (SVEL), the actual link real travel time (RTTAL), the estimated travel time per link (ETTEL), and the link Traffic information providing method characterized in that it provides the outside one or more of the haptic travel time (STTEL). The method of claim 21, The average link speed (AVAL), the instantaneous speed per link (IVEL), the sensory speed per link (SVEL), the actual link real travel time (RTTAL), the estimated travel time per link (ETTEL), and the link And providing at least one of different haptic travel times (STTEL) to a third vehicle to enter the first or second link. The method of claim 22, The average link speed (AVAL), the instantaneous speed per link (IVEL), the sensory speed per link (SVEL), the actual link real travel time (RTTAL), the estimated travel time per link (ETTEL), and the link Traffic information providing method characterized in that for providing at least one of the tangible movement time (STTEL) to the third vehicle using a variable guide plate or a communication terminal. According to the method of any one of claims 11 to 19, The average link speed (AVAL), the instantaneous speed per link (IVEL), the sensory speed per link (SVEL), the actual link real travel time (RTTAL), the estimated travel time per link (ETTEL), and the link Mapping at least one of each phantom travel time (STTEL) to links on a map, thereby establishing a database; And providing road guidance to a third vehicle requesting route guidance to a destination using the constructed database.

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