KR20010036842A - Service method and system of bus location and traffic information using GPS and wireless network - Google Patents

Abstract

PURPOSE: A bus position and driving information service system using GPS and a wireless communication network is provided to correct error in a bus information center by using a GPS system. CONSTITUTION: A bus terminal(1) which is installed each a bus transmits a bus position informed by receiving a GPS signal into a bus information center(4), and informs a passenger of a bus stop arriving as voice. The bus information center(4) corrects error according to a collected driving information including to the bus position information inputting from the bus terminal(1) through dual directions wireless communication network(2). The bus information center(4) also transmits the bus position information to a bus controller(5) and provides the information to a general user requesting information related to a bus driving. The bus controller(5) outputs the bus driving information receiving from the bus information center(4) and also transmits a control information related to the bus driving to the bus information center(4).

Description

Service method and system of bus location and traffic information using GPS and wireless communication network {Service method and system of bus location and traffic information using GPS and wireless network}

The present invention can determine the current position of the bus running on the road at the bus control station, and instructs the bus driver to control the vehicle traveling speed at the control station, and the bus that he wants to the general public carrying the mobile communication terminal It informs you where it is located and informs the public of the bus's operation information through automatic answering phone (ARS), fax, internet homepage and PC communication. A location and service information service system.

The Global Positioning System (GPS) was developed by the US Department of Defense and is available 24 hours a day from anywhere in the world. A total of 24 satellites (including six spare satellites), with two orbiting satellites spaced about two thousand kilometers a day, three spaced 120 degrees apart in an orbit and six orbits spaced 60 degrees around the Earth. It consisted of By using this, 3D position measurement of latitude and longitude altitude is possible, real-time measurement is possible for 24 hours continuously anywhere in the world, it can measure absolute azimuth and absolute speed, can measure accurate time and position measurement accuracy Its reproducibility and reliability are very high, its position measurement accuracy is high and the system is freely open to use.

Conventionally, a stop guidance system for a vehicle equipped with a GPS receiver has been well known, but since the GPS uses its own error without correction, the actual position of the vehicle and the measured position have an error of about 100 meters. If two or more are within 100 meters, it is difficult to determine the exact location of the taxi.

Moreover, since it is applied to a vehicle that is free and unrestricted in driving, it is difficult to correct the error or predict the movement. In addition, the user can be limited because the location information can be used only between a fixed stop or a vehicle in which the terminal is installed.

Invention having the same function as the route guidance of a bus is disclosed in Korean Patent Application Publication No. 1999-002410 'Route Guidance Device and Method using GPS'. This system has difficulty in guiding the stops in the areas of forests and tunnels where GPS reception is difficult, and it is difficult to modify the information stored in the memory of the system when the route is changed.

In the present invention, the GPS is applied to a vehicle in which the movement of the vehicle is limited and the line is constant, such as a bus, and the type of data transmitted from the moving body is improved to correct the error through the IDGPS processing in the bus information center.

In addition, since the bus has a fixed route, in the case of an area or tunnel in a building forest where GPS reception is difficult, the estimated position is referred to by referring to the most recent position and speed. In addition to ARS, a wireless communication network provider such as PCS can provide services to users as an additional service, so that the general public can easily access through mobile phone users, wireless terminal users, and fax services, Internet services, and PC communication services.

In addition, the present invention stores the last five positions, the most recently broadcasted stop in the bus terminal. So, in the case of a place where GPS reception is difficult, the name of the stop that is expected to arrive is determined by referring to the above memories and the latest speed of the bus. When the name of the station and the route are changed, the bus terminal receives the change through the wireless communication network and updates the name of the route and the station at the bus terminal. In this case, the bus company can issue a command to each bus in a batch so that the name of the bus or the stop of the bus can be updated in one operation.

In the operation of the bus, the buses of the same line in a certain area are crowded or quietly detected so that the bus control station can instruct the bus driver to increase or decrease the speed of the bus.

In addition, the operation status of the bus can be stored and managed in a database, and the location of the current bus can be transmitted in real time so that the public can refer to it.

1 is a schematic block diagram of a bus service and stop guidance service system using a GPS and a wireless communication network, showing the overall configuration of the present invention.

2 is a block diagram showing the configuration of a bus terminal according to the present invention;

3 is a block diagram showing the configuration of a bus information center according to the present invention;

4 is a block diagram showing the configuration of a bus control station according to the present invention;

Figure 5 is an exemplary view showing the type and form of data transmitted from the GPS receiver to the bus control unit according to the present invention.

Figure 6 is an exemplary view showing the type and form of data transmitted from the bus terminal according to the present invention to the bus information center.

7 is a flowchart for transmitting data from a bus terminal to a bus information center according to the present invention.

8 is a flow chart of expected arrival stop according to the present invention.

9 is a configuration diagram of a remote update message according to the present invention.

10 is a flowchart for remote update processing according to the present invention;

11 is a block diagram of the operation control function message according to the present invention.

12 is a flow chart of the driving control function according to the present invention.

13 is an explanatory diagram of an error correction function using IDGPS and an error correction function using map matching according to the present invention.

14 is a flowchart illustrating a position error correction method using IDGPS according to the present invention.

15 is a flowchart for explaining a position error correction method using map matching according to the present invention;

16 is a bus information service configuration diagram for servicing a general user with location information of bus operation according to the present invention;

17 is a block diagram of a proximity stop search service for a portable mobile terminal user according to the present invention.

18 is a diagram illustrating the configuration of a bus route information service via a current location for a user of a portable mobile communication terminal according to the present invention.

19 is a diagram illustrating a current driving position service configuration of a specific line bus for a portable mobile terminal user according to the present invention;

20 is a block diagram of a designated location proximity stop search service for an Internet user according to the present invention.

21 is a block diagram of a bus route information service via a designated location for an Internet user according to the present invention;

22 is a diagram illustrating the current operation information service of a specific bus route for an Internet user according to the present invention;

23 is a bus control control configuration diagram of a bus control station according to the present invention.

<Description of the code | symbol about the principal part of drawing>

1: Bus terminal 2: Wireless communication network

3: portable mobile communication terminal 4: bus information center

5: bus control terminal 6: GPS satellites

11: bus terminal GPS antenna 12: bus terminal GPS receiver

13: bus terminal wireless communication unit 14: bus terminal control unit

15: bus terminal memory unit 16: stop information display unit

17: stop voice information 18: operation instruction display

19: operation instruction voice part 40: GPS antenna

41: GPS receiver 42: bus information collection server

43: IDGPS processing unit 44: MAP MATCHING processing unit

45A: Wireless communication network service server 45B, E: ARS / FAX service server

45C: Internet Service Server 45D: PC Communication Service Server

46: bus information and operation instruction transmission server 47: bus operation information database

48: geographic information database 49: bus control server

51: bus control unit 52: bus control memory unit

53: bus information display unit 54: bus progress instruction input unit

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a system for driving and stopping a bus using a GPS and a wireless communication network as a general configuration of the present invention.

The location and operation information service system of the bus using the GPS and the wireless communication network of the present invention receives the GPS signal, obtains the location of the bus, transmits the information to the bus information center, and informs the passenger of the station to be arrived by the current location information. Bus terminal (1) installed in each bus that delivers instructions from the bus control center to the driver, and bi-directional pager, wireless data network, PCS (Personal Communication Serivce) network, and cellular (Cellulla) network And a TRS (Trunked Radio System) network, a wireless communication network (2) connecting the bus terminal (1) with the bus information center and the wireless communication between the bus information center and the mobile mobile terminal, and the data through the wireless communication network. It is possible to transmit and receive a portable mobile communication terminal (3) connected to the bus information center to receive the operation information and arrival schedule information of the bus of the route bus; The bus information is collected from the bus terminals 1 through the wireless communication network 2 to analyze the error, the result is transmitted to the bus control station, and the bus operation information is transmitted to the wireless communication network 2. The bus information center (4) which provides the portable mobile communication terminal (3) and transmits the information to the bus service information service company through the bus service information service company and receives the bus operation information from the bus information center (4) and expresses it to the user. It consists of a bus control center 5 which consists of bus control centers or general control offices which transmit control information to the bus information center 4.

2 is a block diagram showing the configuration of a bus terminal of the present invention.

The bus terminal 1 of the present invention receives a GPS signal, obtains its own location, transmits it through the wireless communication unit 13, informs the station that is expected to arrive in the future, and receives instructions of a bus control station to inform the driver. do.

The bus terminal of the present invention is connected to a bus terminal mounted on a bus and is embedded in a bus terminal GPS antenna 11 fixed to the roof of the bus by a magnet as an antenna for receiving a GPS signal and a terminal mounted on the bus. As a GPS receiver, a bus terminal GPS receiver 12 comprising a relatively inexpensive receiver and a wireless communication unit embedded in a terminal mounted on a bus, which transmits position information of a bus and receives bus instructions for bus control. Controls the communication unit 13 and the bus terminal GPS receiver 12, receives the time, the position of the satellite, the distance from the satellite, the speed, and the like from the GPS receiver 12 to obtain its latitude and longitude coordinates. Transmit through (13), search the previous stop, the current location and the location of the next stop, give the name of the stop, and the bus control The bus terminal control unit 14 for updating the route stored in the storage device when the route is changed at the bus control station, and storing the position and the name of each stop, and by the control of the bus terminal control unit 14 A bus terminal storage unit 15 for providing stop information, a stop guide display unit 16 for displaying the name of the scheduled arrival stop and a guide message to be transmitted under the control of the bus terminal control unit 14; The bus guide control unit 17 outputs the name of the scheduled arrival bus stop by the control of the bus terminal control unit 14, and the matters indicated at the bus control station under the control of the bus terminal control unit 14 are displayed on the screen. The driving instruction display unit 18, which is displayed on the screen and informs the driver, and the instructions instructed by the bus control center by the control of the bus terminal control unit 14 are output as audio. To inform the voice instruction is composed of operation unit 19.

3 is a block diagram showing the configuration of a bus information center according to the present invention.

The bus information center of the present invention receives the position data of the bus received through the wireless communication network 2 and its own GPS signal, and reduces the positional error of the bus through IDGPS processing and map matching processing, thereby correcting the exact position of ARS, FAX, Provides information to the general public through the Internet, PC communication, and mobile communication terminal, transmits the data to the bus control center of the bus company, and provides instructions to the bus driver of the control center through the wireless communication network (2). ) To perform the function.

Such a bus information center of the present invention, the GPS antenna 40 is installed at a fixed point where the reception sensitivity is good and its position is known to receive the GPS signal of the bus information center, and through the GPS antenna 40 at the bus information center. A GPS receiver 41 for receiving a GPS signal, a bus information collection server 42 for receiving bus position data transmitted from the bus terminal 1 through the wireless communication network 2 from a wireless communication network center via a dedicated line, and GPS By comparing the position received from the receiver 41 with the absolute position of the known GPS antenna 40 itself, the error of the position of the current GPS satellite is detected, and the error received from the bus information collection server 42 is received. IDGPS processing unit 43 for correcting the positional error of the bus by performing IDGPS (Inverted Differential GPS) processing to add and subtract to the position of each bus, coordinates of roads stored in geographic information database 48 and IDGPS processing unit 43 Map matching processing unit 44 which compares the coordinates of the buses and calculates the location of the bus more accurately by referring to the cumulative position of the bus, and finally obtains the location of the bus through the wireless network service. The wireless network service server 45A, which serves the users but provides the general data and geographic information of the bus as well as the current operation information of the desired bus route, and the location of the bus finally obtained through telephone answering and fax. The ARS / FAX service server 45B, which serves the general public and provides the general data and geographic information of the bus, as well as the current operation information of the desired bus route, and the public information on the bus location finally obtained through the Internet. However, the general data and information on the buses as well as the current operation of the desired bus route Internet service server (45C), which also provides information and services, and the location of the bus finally obtained through the PC communication to the general public, but not only the current operation information of the bus route, but also general data and geographic information of the bus. PC communication service (45D) and instructions on the running speed of the bus sent from the bus control station to transmit over a wireless network to the wireless communication network center through a dedicated line, bus operation information sent by the wireless communication network service server 45A Bus information and bus command transmitting server 46 for transmitting data, and bus service information database for storing static information of bus companies and routes, and continuously storing and updating current service information of buses transmitted in real time. ), A geographic information database 48 for storing and managing electronic maps related to bus operation, and bus operation schedules. The bus is transmitted to the control terminal of the bus traffic control in real time, and consists of a bus control server 49 receiving the information indicating the station bus.

4 is a block diagram showing the configuration of a bus control station according to the present invention.

The bus control office 5 of the present invention receives the bus information from the bus information center 4, displays it on the bus information display unit, and receives a control command for the traveling speed of the bus from the user and transmits it to the bus information center 4. do.

The bus control office of the present invention receives a bus operation information from the bus information center 4, displays it on the display unit, receives a command from the bus progress instruction input unit, and transmits the instruction to the bus information center 4, A bus control storage unit 52 for storing unique data of bus companies and static data regarding routes and maps, a bus information display unit 53 for displaying data on bus operation on a screen together with a map; In case of changing the route and changing the name of the station, the route message and the name change are inputted to the corresponding bus. It consists of a bus progress instruction input unit 54 for changing the name of the route or stop.

The operation of the present invention configured as described above will be described.

In the present invention, the bus terminal 1 mounted on the bus receives a GPS signal from a plurality of satellites 6, obtains information on the current speed and position, and transmits the GPS signal to the wireless communication network 2. Information sent to the wireless communication network is collected by the bus information center (4). On the other hand, the bus information center 4 receives the GPS signal and reduces the error for each position of the bus sent to the bus information center 4 with the result in the IDGPS processing unit 43, and then the MAP MATCHING processing unit 44 Reduce the error even more. The bus position thus obtained is sent to the bus control terminal 5 of each bus company.

Through the bus control terminal 5, it is possible to know the bus operation status of each line, and when the bus vehicles are concentrated or dispersed in a specific area for each line, the speed of the vehicle progress is indicated through the bus control terminal 5 can do. The bus progress instruction command through the bus control terminal (5) is sent to the bus information center (4) with the bus's unique number, and the bus information center (4) transmits the bus progress instruction command to the wireless network operator to the wireless network. To be sent.

The bus progress instruction command received by the bus terminal 1 of the corresponding bus through the wireless communication network is informed of the instructions in a manner appropriate to the driver. The bus terminal 1 knows its position through the GPS receiver and stores the locations of the stops that have been passed and the stops that have been passed so far in the bus terminal storage unit, so that the names of the stops expected to arrive in the future are compared by comparing the positions. To be broadcast without manipulation.

The bus operation information stored in the bus operation information database 47 of the bus information center 4 is updated in real time, along with the geographic information of the geographic information database 48, ARS / FAX 45B, and the Internet homepage. 45C, serviced to the public via PC communication 45D. In addition, this information is sent to the wireless communication network 2 through the wireless communication network service server 45A, and is delivered as an additional service to those who carry the portable mobile communication terminal 3.

Therefore, the position of the bus and the service information service system using the GPS and the wireless communication network of the present invention accurately measure the position at which the bus is currently running. In the simple measurement of GPS, there is an error of about 100 meters and an error of about 100 meters is difficult, so it is difficult for existing map matching to distinguish accurate roads. Therefore, in the bus information center 4, the IDGPS technique and the map matching technique are applied simultaneously to reduce the error. Through IDGPS, the error is reduced to within 10 meters (3 meters in theory) and based on this, the map matching technique is applied to calculate the exact position on the road. The bus also calculates a more accurate location based on the fact that it only travels on certain roads and routes.

In addition, the bus company can control the location of the bus so that the bus company can control the location of the bus. To provide convenience to the general public and to give bus companies more efficient bus operations.

In addition, since this information is gathered and serviced in one place, users of ARS, FAX, Internet, and PC communication can tell where the bus vehicle they want to ride is located on the current route, and users who have a PCS mobile phone or wireless terminal. They can get these services directly from the street. So you don't have to wait any longer at the stop for the last train left.

In addition, since the bus can know its location through the terminal, it uses the stop location and name data of the route already stored in the internal memory to guide the stop that is scheduled to arrive without the driver's separate operation.

In addition, when the name of the bus or the name of the bus is changed, the name of the bus or the name of the bus is collectively changed through the wireless communication network, rather than accessing individual memory devices.

Here, in describing the embodiments of the present invention, the location information of the bus and the stop guide information have been described. However, the present invention is not limited thereto, and the present invention is not limited thereto. As a matter of course, it can be utilized as a location and operation information service system of various vehicles such as a truck, a taxi, etc. and is included in the scope of the present invention.

The bus terminal 1 mounted on the bus includes a position measurement function for measuring a position and transmitting the position to a control unit, a position and a vehicle state transmission function for transmitting the measured position to a wireless data network together with the state of the vehicle, and the measured position. And the information on the scheduled stops, which automatically guides the stops that will be arriving by referring to the route table stored in the storage unit. There is a remote update function to change and a speed control function to inform the driver when the control station instructs the speed of the vehicle.

The position measuring function receives a GPS signal from the GPS antenna 11 and measures the position of the bus in the GPS receiver 12. Data transmitted from the GPS receiver 12 to the bus controller 14 is as shown in FIG. 5.

5 is an exemplary view showing the type and form of data transmitted from the GPS receiver to the bus controller. Types of data are: satellite signal sensitivity, which indicates the satellite observation state of the receiver, GPS WEEK, which indicates the current WEEK measured, GPS SECOND, which indicates the measured second, latitude, longitude of the bus observed by the receiver. It also sends the observed latitude, longitude, altitude, and speed information indicating the altitude and the speed of the bus.

6 is an exemplary view showing the type and form of data transmitted from a bus terminal to a bus information center.

The position and vehicle state transmission function receives the data as shown in FIG. 5 from the bus control unit 14 and converts the data into a form suitable for the information center 6 as shown in FIG. 6. Send it once. That is, when data is properly received from the GPS satellites, the vehicle ID, the satellite ID list, and the vehicle status information are further included in the information of FIG. 5 and sent to the information center 6 to properly receive the data from the GPS satellites. If not, the vehicle ID, satellite ID list, and vehicle status information are further included in the information of FIG. 5, and the GPS WEEK and the satellite list ID are processed with an error (= 000000), and the GPS SECOND is the most recent. It will send the information in seconds since the reception. The latitude, longitude, altitude, and speed transmit the information generated by the calculation. In other words, when a bus passes through a tunnel or a crowded area and cannot receive GPS satellites, it calculates the expected speed and position in consideration of the recent speed and the previous position and transmits the data.

7 is a flowchart of transmitting data from the bus terminal to the bus information center according to the present invention. As shown in the drawing, satellite data is read when the current time T is divided by 10 and the remainder is 0. That is, the satellite data is read once every 10 seconds, and if the position can be detected, the normal reception is possible. Therefore, the satellite data and the current speed, altitude, and latitude and longitude values are selected. If location is not possible, normal reception is not achieved. Therefore, the speed is calculated from the full speed and the full speed, and the altitude, latitude, longitude are calculated from the previous value of the speed, and the satellite sensitivity and the main ( WEEK) selects error information, time is current time, and satellite ID list is error information. Next, the vehicle ID is read, the vehicle state is read, the data is transmitted, and the transmission routine is terminated.

Meanwhile, the scheduled arrival stop guide function is a function of informing the name of the next scheduled stop based on the current location and the most recently passed stop without the driver's manipulation, as shown in FIG. 8.

8 is a flow chart of expected arrival stop according to the present invention.

When the guidance starts, set the first announcement to TRURE and then read the location data to calculate the current coordinates. Then, the nearest stop of the line is read, and it is determined whether the first announcement is normal. If the first announcement is an accurate bus stop guide, the distance to the nearest stop is calculated and the distance is over 100m. If the distance is less than 100m, the first guide broadcast is read by reading the location data for the next stop guidance. Set it to (FALSE) and proceed to the next step. On the other hand, if the first announcement is an error (FALSE), read the expected arrival stop on the basis of the previous guided stop, and determines whether the nearest stop is expected to arrive. If the nearby stop is not the expected stop, the process returns to the process of calculating the current coordinates by reading the location data, and if the nearest stop is the expected stop, the voice information of the name of the nearest stop is read together with the error setting of the first announcement. , Voice guidance of the proximity station, the display of the indication of the proximity stop guide, and set the previous stop to the proximity stop. Subsequently, the process returns to the process of calculating the current coordinates by reading the location data until the final destination becomes the nearest stop, and guides each stop in turn.

When the guidance is started in this way, the bus control unit 14 accumulates a position several times and compares the result with the route stored in the storage device. As a result of the comparison, when the direction of the bus is decided on the route, the first announcement is made by searching for the nearest stop from the current measurement position. If the distance between the nearest stop and the current location is less than 100m, the guide will not start. In order to reduce false broadcasts caused by GPS errors as much as possible. In this case, broadcasting starts from the next stop. When the first announcement starts, the next stop will be known in advance by referring to the route map. The guidance is automatically terminated when the bus arrives at its final destination.

For remote update and operation control functions, the bus terminal receives the message from the bus control center. The bus terminal consists of three parts: 'message header' + 'command header' + 'data'. The message header indicates the transmission / reception ID and the type of message. The command header indicates the type of command subdivided in each message, and the data is the actual data portion of each command.

Remote update includes route update which changes bus service route and stop update which changes information of stop. Route updates are used when part or all of the route changes, and station updates are used to change the name or guide information of the station.

9 is a configuration diagram of a remote update message according to the present invention, and FIG. 10 is a flowchart of a remote update process according to the present invention.

Read the command header and read the route table (= 'UPLN') to read the route table, delete the route from the section before the change to the section after the change, and then add or update the route table, read the stop table, and read the stop table. Delete the stop data. On the other hand, if the command header is a stop update ('UPNM'), the stop table is read and the stop data in the changed section is deleted. In this manner, after deleting the stop data according to the age update or the stop update, the new stop data read or updated in the stop table is added and terminated.

11 is a configuration diagram of the operation control function message according to the present invention, Figure 12 is a flow chart of the operation control function control according to the present invention.

In case of driving control ('SPD') by reading command header, stop value increases ('EX'), stop time decrease ('RE'), speed acceleration ('UP'), speed deceleration ('DN' The voice prompts you to perform the corresponding control. If the command header is an emergency call ('CAL'), the message data is read to guide the message by voice. In addition, the voice guidance message is displayed on the message display board. In other words, the operation control function is a function to control the increase or decrease of the speed or the stop time of the stop to the bus currently in operation at the bus control center and to transmit a message when there is an emergency contact. When the buses of the same route are concentrated in a certain area, the front bus is controlled to reduce the speed or stop time, and the next bus is commanded to reduce the speed or stop time.

On the other hand, the bus operation information center that receives the location information of the bus and provides a comprehensive service is divided into parts for location error correction, bus information service, database, and bus control. For location error correction, there are Inverted Differential Global Positioning Systems (IDGPS) correction function and MAP MATCHING function.For bus information service, portable mobile communication device service function, ARS service function, FAX service function, Internet service function There is a PC communication service function, and bus control functions include bus position transmission function and bus operation control message transmission function. Each function will be described in detail with reference to the drawings.

13 is an explanatory diagram illustrating an error correction function using IDGPS and an error correction function using map matching according to the present invention.

IDGPS error correction receives the position through the GPS antenna and receiver at the bus information center, stores the observation satellite ID and position in each second unit, receives the bus position from the bus terminal, and receives the position of the bus. Calculate the error of the measurement position, and correct the position error of the bus by using the error and the measurement value of the position of the bus. The map matching processing function searches for the position on the road closest to the current position in the database, calculates the final position of the bus, and updates the bus position information in the database.

Error correction using IDGPS is an improvement of the conventional positioning method using GPS and positioning method using DGPS (Differential GPS). Existing GPS system is used for you as the price of receiver is cheaper, but it has a limit of about 100 meters in the horizontal plane in positioning accuracy. It is difficult to apply for navigation or vehicle traffic measurement. And the DGPS system can correct the error, but its exact position could not be measured at the place of controlling or controlling the moving vehicle. The IDGPS technique according to the present invention is not a method of correcting an error in a moving vehicle, but a method of determining an accurate position by correcting a position error of the moving vehicle at a controlled place.

14 is a flowchart illustrating a position error correction method using IDGPS according to the present invention.

Calculate the pseudorange and satellite location of each satellite observed from the reference station (information center), and receive a list of satellite IDs and locations of the mobile vehicle. Then, the position of the reference station is calculated using the satellite observed from the mobile vehicle, and the estimated error is calculated. The estimated error is calculated by the error between the absolute position of the reference station and the observed position of the reference station, and the position of the bus is corrected using the estimated error. That is, the correction position is a position at which the estimated error is calculated from the position of the moving vehicle.

In addition, the conventional map matching method is a method of obtaining the prediction position on the current road with the coordinates of the current measurement position, the progress vector, the speed, the previous position, and the road segment, but in the present invention, the existing map utilizing the characteristics of the route guidance of the bus Different matching and method.

15 is a flowchart illustrating a position error correction method using map matching according to the present invention.

First, the location of the point on the bus route is stored in detail in the DB, and the current position of the vehicle having the IDGPS error corrected is received. Next, search the previous position and speed of the vehicle, search the database for the nearest position on the route with the previous position, speed, and current position of the vehicle, and output the searched position as the bus position.

16 is a block diagram of a bus information service for serving a general user with location information of a bus service according to the present invention.

The service target includes a wireless communication network service server 45A for serving a user of a portable mobile communication device, an ARS service server 45B for serving an ARS user, an Internet service server 45C for serving an Internet user, and a PC. PC communication service server 45D for serving a communication user and a FAX server 45E for serving a FAX user are included, and these servers serve bus operation information using databases 47 and 48. . Each of these servers receives the service request of the corresponding service users, retrieves information about them from the database, and sends a service response.

17 is a block diagram of a proximity stop search service for a user of a mobile terminal according to the present invention.

When the user of the mobile communication terminal makes a call to the bus information center through the wireless communication network and connects with the user, selects a function button according to the automatic guidance and requests a near-stop search, and the wireless communication service provider measures the position of the mobile communication terminal. The terminal number and terminal location information are provided to the bus information service center, and the bus information service center searches for the nearest stops from the terminal location, calculates the distance from the mobile communication terminal to each stop, and then the terminal number, the name of the nearest stop, The distance information is provided to the wireless communication service provider, and the wireless communication service provider transmits the information on the proximity stop to the corresponding terminal as a response message, and the mobile communication terminal outputs the name and distance of the proximity stop.

18 is a configuration diagram of a bus route information service via a current location for a user of a portable mobile communication terminal according to the present invention.

When the user of the portable mobile communication terminal requests the bus route information, the corresponding server of the wireless communication service provider connected through the wireless communication network measures the terminal location and provides the terminal number and the terminal location information to the bus information service center, and the bus information service center. In the search for the nearest stop at the terminal location, the bus route and route information via each stop is retrieved. According to such a search, the terminal number, the nearest stop name, the distance, the bus route number passing through, the first train, the last train, the dispatch time, the company name, and the contact information for each route are provided to the wireless communication service provider, and the wireless service provider provides the terminal. Send a response message. Accordingly, the user of the portable mobile communication terminal can receive the above-mentioned near stop name, distance, bus route number, first line, last train, dispatch time, company name, and contact information for each line.

19 is a configuration diagram of a current driving position service of a specific line bus for a portable mobile communication terminal user according to the present invention.

When a user of a portable mobile communication terminal requests a current driving position service of a specific line bus and inputs a bus line number, the wireless communication service provider provides the terminal number, terminal location, and bus line number to the bus information service center, and provides bus information service. The center searches the terminal location for the nearest five vehicles in the line number that are expected to arrive, the name and time of the last stop of the five vehicles, and the five vehicles closest to the terminal location. After calculating the estimated time of arrival, the terminal number, bus line number, information on the station name, time, and current location of the last stop of the five vehicles stopped, and the information is provided by the wireless service provider. By sending a response message to the current service location information of a specific line bus can be received.

As such, the service provided to the user of the mobile communication terminal services the location of the stop close to the user's current location, the bus route information that can be boarded at the current location, and the current operation information of the specific route, wherein the wireless communication service provider connects the corresponding service. By providing the location information of the terminal and the service request information requested by the terminal user to the bus information service center, the service desired by the search and calculation based on the current position information and the service request information of the terminal at the bus service information center Information will be provided.

20 is a block diagram of a designated location proximity stop search service for an Internet user according to the present invention.

An Internet user connects to a bus information service center through an internet network and requests a desired service. At this time, if the search location and the nearest stop search is requested, the bus information service center connected through the Internet network searches for the location of the nearest stop at the designated location and calculates the distance from the current location to each stop. As a result, information about the search location, the name of the nearest stop, and the distance is provided to the Internet user through the Internet network.

21 is a configuration diagram of a bus route information service via a designated location for an Internet user according to the present invention.

When the Internet user requests the designated location and bus route information to be searched, the bus information service center connected through the Internet network searches for the nearest stop location at the designated location and searches for the bus route passing through each stop. According to the search result, the location, the name of the nearest stop, the distance, the bus route number passing through, the first train by each route, the last train, the dispatch time, the company name, and the contact information are provided to the Internet users through the Internet network.

22 is a diagram illustrating the current operation information service of a specific bus route for an Internet user according to the present invention.

When an Internet user inputs a location and a route number to request the current operation information service of a specific route, the bus information service center will arrive at the designated location at the designated location based on the search position and route number, and the five nearest vehicles Search for a vehicle. Search for the name and time of the last stop of the five vehicles and calculate the estimated time of arrival at the nearest stop according to the location of the terminal. Terminal number, bus line number, and five vehicles recently stopped. It provides information on a station name, time, and current scheduled arrival time, and transmits a response message to the corresponding terminal through the Internet network to receive the current driving position information of a specific route bus.

As such, as an Internet user service, the user is informed of the bus information and the current driving status through the homepage. The service type and method are similar to those of a portable mobile communication terminal, but the user specifies and provides a desired location.

In addition, the ARS user service provides bus information and current operation status information through a voice telephone network, which is a method in which a user inputs current location information using a stop number, a bus route number, and the like. In addition, the PC communication user service is the same as the Internet user service, and all of these services are made to receive the results by FAX.

23 is a bus control control configuration diagram of a bus control station according to the present invention.

The bus position information observed from the bus terminal 1 of each bus is provided to the bus information center 4 through the wireless communication network 2, and the bus information center 4 collects bus position information collected from each bus. Receives IDGPS Mapmatching and transmits bus location to each control station. The terminal 5 of each bus company, that is, each control station displays and provides the location information of the buses on the screen based on the bus location information of each line, and also provides a bus control center for the operation control message which the operator of the control center commands to each bus. Send to (4). The bus information center 4 receiving the driving control message of each control station decodes the driving control message and stores it in a database, and transmits the driving control message to the terminal 1 of the bus via the wireless communication network 2. In this way, each control station collects the location of the bus so that the manager can check the operation status according to the location of the bus, and can execute the operation control command, and performs the bus control function of transmitting the operation instruction of the bus control station to the bus.

As described in detail above, the present invention measures the location information of each bus using GPS, and compares the location information with the GPS location information of the bus information center to reduce the error, thereby guiding the bus location information and stopping. There is an effect that can show the reliability of the guidance.

In addition, the present invention has the effect that can provide the information to the general user requesting information related to the bus operation through the mobile communication service, the Internet and PC communication services, FAX communication service, ARS service.

In addition, the present invention can update various information of various buses at a time at a bus control station, and can be used very effectively as an overall comprehensive management system by easily giving a driver a driving related instruction.

Claims (12)

Receives GPS signal, finds the location of the bus, transmits it to the bus information center, and informs passengers of the expected stop by voice based on the current location information, and a bus terminal installed for each bus to deliver instructions from the bus control center to the driver. (1) and, It collects the operation information including the location information of the bus from the bus terminals 1 through the two-way wireless communication network 2, corrects the error, and transmits the bus location information to the bus control center, and provides mobile communication service, Internet and PC communication. A bus information center (4) providing the information to general users who request information related to bus operation through a service, a fax communication service, and an ARS service; Receiving bus operation information from the bus information center 4 and expressing it to the control station manager, and a bus installed and operated by a bus company or a general control station that transmits control information related to the operation of the bus to the bus information center 4. Location and operation information service system of a bus using GPS and a wireless communication network, characterized in that the control station (5). The method of claim 1, wherein the bus terminal, A GPS receiver 12 which receives a GPS signal from a GPS satellite via a bus terminal GPS antenna 11 and detects information such as time, position of the satellite, distance from the satellite, and speed; A wireless communication unit embedded in a terminal mounted on a bus, comprising: a bus terminal wireless communication unit 13 which transmits location information of a bus to a wireless communication network 2 and receives bus instructions of a bus control station; The bus terminal GPS receiver 12 is controlled and its longitude and latitude coordinates are obtained from the GPS receiver 12 by receiving the time, the position of the satellite, the distance to the satellite, the speed, and the like. Transmit to the bus information center (4), search the previous stop and the current position and the location of the next stop to inform the name of the stop, inform the driver of the instructions at the bus control station, the route at the bus control station The bus terminal control unit 14 for updating the route stored in the storage device when the value is changed; A bus terminal storage unit 15 for storing the position and name of each stop and providing stop information under the control of the bus terminal control unit 14; A stop guide display unit 16 for displaying a name of a scheduled arrival stop and a guide message to be transmitted on the screen under the control of the bus terminal control unit 14; A stop guide voice unit 17 which outputs a name of an expected arrival stop by voice under the control of the bus terminal control unit 14; A driving instruction display unit 18 which displays information on the screen displayed by the bus control station under control of the bus terminal control unit 14 and informs the driver; Location and operation of the bus using GPS and a wireless communication network, characterized in that the bus command control unit 14 is composed of a driving instruction voice unit 19 which outputs a voice command to the driver by the control of the bus control unit 14 to inform the driver. Information service system. The method of claim 1, wherein the bus information center 4, A GPS receiver 41 which receives a GPS signal through a GPS antenna 40 installed at a fixed point whose position is known precisely; A bus information collection server 42 which receives bus position data transmitted from each bus terminal 1 through a wireless communication network 2 from a wireless communication network center through a dedicated line; By comparing the position received from the GPS receiver 41 with the absolute position of the known GPS antenna 40 itself, the error of the position of the current GPS satellite is detected, and the error is detected by the bus information collecting server 42. An IDGPS processor 43 for correcting the positional error of the bus by performing an Inverted Differential GPS (IDGPS) process of adding and subtracting the received position of each bus, MAP MATCHING which compares the coordinates of the roads stored in the geographic information database 48 with the coordinates of the bus passing through the IDGPS processor 43 and calculates the more accurate bus position by referring to the accumulated cumulative position of the bus. Processing unit 44, A plurality of service servers for finally providing the location information, operation information and general data and geographic information of the bus through mobile communication service, Internet and PC communication service, fax communication service, and ARS service; Bus information and driving instruction transmitting server which transmits the instruction on the traveling speed of the bus sent from the bus control station to the wireless communication network center through a dedicated line, and transmits the bus operation information data transmitted by the service servers. 46), A bus service information database 47 that stores static information of a bus company and a route and continuously stores and updates current service information of a bus which is transmitted in real time to provide information to the service server; A geographic information database 48 for storing and managing electronic maps in connection with bus operations; The bus control server 49 transmits bus operation information to the bus control terminal of the bus control station in real time, receives and stores bus operation instructions transmitted from the bus control terminal, and transmits it to the terminal of each bus. Location and operation information service system of the bus using GPS and wireless communication network, characterized in that consisting of. 2. The bus control center of claim 1, wherein A bus control controller 51 which receives bus operation information from the bus information center 4, displays it on the display unit, receives instructions from the bus progress instruction input unit, and transmits the instructions to the bus information center 4; A bus control storage unit 52 for storing unique data of bus companies and static data regarding routes and maps; A bus information display unit 53 for displaying data on the operation of the bus on the screen together with a map; Instructions regarding the operating speed of a specific bus are received from the user, and emergency message input is transmitted to the corresponding bus by inputting the route change and name change when the route change and the stop name are changed. Bus position and operation information service system using a GPS and a wireless communication network, characterized in that the bus progress instruction input unit 54 for changing the name of the route or stop. A bus terminal that receives GPS signals for each bus to find the location of the bus and guides the bus stop, collects the bus location information from each bus terminal, and retrieves the relevant information from the database using the location information. The information center was built, the bus information was received from the bus information center through the bus company's control terminal, the manager managed the bus operation, and the system was established including a bus control center to instruct each bus to operate the bus. In the service method of the location and operation information service system of the bus using GPS and wireless communication network, The bus terminal receives the location information through the GPS receiver and transmits the corresponding location information to the bus information center at regular time intervals, and also provides a broadcast announcement for the scheduled stop when the approaching stop is approached within a certain distance. The automatic bus stop guide course; The GPS information error is obtained by comparing the position measured by the GPS receiver in the bus information center with the absolute position of the bus information center, and the position information is corrected in real time by correcting the bus position collected by the bus terminal. A location information receiving process of a bus information center which is updated with a bus and transmits location information of each bus to each bus control station; A driving instruction message delivery process of a bus terminal which receives a bus operation instruction message of each bus control center at the bus information center and transmits it to a corresponding bus; When the bus information center receives the bus location and route guidance information through a communication connection through a wireless communication network, a public telephone network, or an internet network, a portable movement is performed using the bus location information, bus route information, and geographic information previously stored in the database. Location of the bus using GPS and wireless communication network, which includes performing a bus location information service process of a bus information center providing desired information through communication service, Internet and PC communication service, fax communication service, and ARS service. Service method of the driving information service system. The method of claim 5, wherein the bus automatic stop guide process of the bus terminal comprises: A position measuring step of measuring a position of the bus terminal mounted on the bus through a GPS receiver; Transmitting the measured position along with the state of the vehicle to the bus information center through the wireless data network; An estimated arrival stop guide step of automatically guiding a stop which is scheduled to arrive with reference to the measured position and the route table stored in the storage unit; A remote updating step of changing the names of the lines and stops stored in the storage device when a change of a line and a stop name change instruction are issued at the control station; And a driving speed indicating step of instructing the driver of the instruction when the control station instructs the driving speed of the vehicle to be increased or decreased. The method of claim 6, wherein the arrival stop guide step, A first step of setting the first announcement broadcast as TRUE when the guidance is started, and reading the position data to calculate the current coordinates; And a second step of reading the nearest stop of the line and determining whether the first announcement is normal (TRUSE); If the first announcement is normal (TRUSE), calculate the distance to the nearest stop, if more than 100m, read the location data to calculate the current coordinates for the next stop guidance and proceed to the next, if the distance is less than 100m the first announcement Setting the error to FALSE and proceeding to the next step; If the first announcement is an error, read the expected arrival stop on the basis of the previous information stop, if the nearest stop is not expected to arrive, return to the step of calculating the current coordinates by reading the location data, the proximity stop is expected to arrive If the stop is a fourth step to proceed to the next process; After error setting of the first step of the third step and when the proximity stop of the fourth step is the expected stop, the voice data of the proximity stop is read, and the voice guidance of the proximity stop and the indication of the display board of the proximity stop are performed. A fifth step of setting a previous stop as the near stop; The position of the bus using GPS and the wireless communication network, characterized in that the sixth step of guiding each station in turn to return to the process of calculating the current coordinates by reading the location data until the final destination is the nearest stop and Service method of the driving information service system. The process of claim 5, wherein the location information receiving process of the bus information center comprises: Receive the location through GPS antenna and receiver at the bus information center, store the satellite ID and location in every second unit, and receive the location of the bus from the bus terminal. Calculating an IDGPS error and correcting the position error of the bus based on the error and the position measurement value of the bus; On the basis of the current position information of the error-corrected bus, the position search on the road closest to the current position in the database is searched, the previous position and speed of the vehicle are searched, and the previous position, speed, and current position of the vehicle are A service method of a bus position and operation information service system using a GPS and a wireless communication network, comprising performing a map matching process of updating a bus position information in a database by calculating a final position. The method of claim 5, wherein the bus location information service process of the bus information center comprises: When a mobile mobile device user receives a request for a search service for a nearby stop at a current location, a bus route information service via a current location, or a current driving position service of a specific route bus, the mobile terminal receives the terminal location information from a mobile communication service network. A portable mobile communication service for searching and calculating distance and time information and transmitting the calculated distance and time information to a corresponding mobile communication terminal through a mobile communication service network; It provides the Internet homepage to receive the specified location information and service request information from the Internet users through the Internet network, and provides the nearest stop search service, the route search service via the designated location, and the current operation information service of the specific bus route. Provide services for Internet and PC communication users, Providing automatic voice guidance service through ARS server, receiving designated location information by using general telephone communication network, providing search service near designated location, route searching service through designated location, and current operation information service of specific bus route An ARS service; And a GAX service for transmitting and transmitting a result of each service by a FAX designated by each user, wherein the bus location and operation information service system using a GPS and a wireless communication network. The method of claim 9, wherein the proximity stop search service for the user of the mobile communication terminal, When a user of a portable mobile communication terminal connects a service to a bus information center through a wireless communication network and requests a near-stop search, the wireless communication service network measures the position of the mobile communication terminal and provides the terminal number and terminal location information to the bus information service. Providing the center; At a bus information service center, searching for a stop close to a terminal location and calculating a distance from the mobile communication terminal to each stop; Transmitting the information obtained by the search and the calculation of the terminal number, proximity station name, and distance information to the corresponding terminal through the wireless communication service network. Location and operation information of the bus using the GPS and the wireless communication network. Service method of service system. The bus route information service of claim 9, wherein the bus route information service via the current location for the user of the mobile communication terminal comprises: Receiving, by the bus information service center, a terminal number and terminal location information from a wireless communication service network connected through a wireless communication network when a user of the portable mobile communication terminal requests bus route information; Searching for a bus stop and route information via each stop in the bus information service center after searching for a close stop at the terminal location; Transmitting a response message to the corresponding terminal through the wireless communication network according to the search, the terminal number, the nearest stop name, the distance, the bus route number passing through, the first train, the last train, the dispatch time, the company name, and the contact information. A service method of a bus position and operation information service system using GPS and a wireless communication network, characterized in that performed. 10. The method of claim 9, wherein the current service location service of the specific line bus for the user of the mobile communication terminal, Receiving a terminal number, terminal location, and bus route number from a wireless communication service network when a user of the portable mobile terminal requests a current driving position service of a specific route bus and receives a bus route number; Retrieving at the bus information service center the five nearest vehicles that are expected to arrive among the vehicle of the corresponding route number at the terminal location; Retrieving the stop name and time of the last stop of the five vehicles, and calculating the estimated time of arrival of the five vehicles at the closest stop according to the terminal location; Based on the results obtained by the search and calculation, the terminal number, bus line number, information on the station name, time, and current location arrival time of the last five vehicles stopped by the wireless communication service network are provided to the corresponding terminal. A service method of a bus position and operation information service system using a GPS and a wireless communication network, characterized in that the step of transmitting a message.