KR100663022B1 - Method for guiding travel route of vehicle using mobile phone - Google Patents

Abstract

By providing a navigation service using a mobile communication terminal, it uses less memory and also effectively guides the movement path of a mobile body while reducing communication time with a map information providing center.

In the mobile communication terminal, only the point of interest data of the map data is stored in advance, and the background map data, the road map data, and the route search map data are downloaded from the map information providing center to guide the moving path of the mobile body. When the navigation service is performed, the central processing unit reads the point of interest data from the map storage unit and displays the point of interest data on the display unit, and sets the moving start position and the destination of the moving object using the displayed point of interest data. Access the map information providing center to download and store the background map data, road map data and route search data between the moving start position of the moving object and the downloaded background map data, road map data and route search data and map storage Move using point of interest data stored in advance The guides the movement route.

Navigation, mobile communication terminals, POIs, points of interest, background maps, road maps, route navigation, mobiles, traffic information,

Description

Method for guiding travel route of vehicle using mobile phone}

1 is a block diagram showing the configuration of a mobile communication terminal to which the movement path guidance method of the present invention is applied;

2 is a signal flow diagram showing a movement path guidance method of the present invention.

Explanation of symbols on the main parts of the drawings

100: microphone 102: speaker

104: telephone call unit 106: antenna

108: modulation demodulator 110: GPS receiving module

112: geomagnetic sensor module 114: speed detection module

114a: acceleration sensor 114b: integrator

114c: speed accumulation unit 116: temperature sensor module

118: barometric pressure sensor module 120: map storage unit

122: central processing unit 124: display unit

126: command input unit 128: memory

In the present invention, the point of interest data among the map data is stored in advance in the mobile communication terminal, and the background map data, the road map data, and the route search map data are downloaded from the map information providing center to determine the moving path of the moving object. The present invention relates to a method for guiding a moving path of a mobile object using a mobile communication terminal for guiding.

The development of the position acquisition technology using the Global Positioning System (GPS) and the field of telematics, which is a multimedia system used in a moving object such as a vehicle, have been developed, and the necessity of a low-cost navigation system is continuously raised.

The navigation system includes a position acquisition module capable of acquiring a current position of a predetermined moving object, a path calculating module for calculating a moving path from the current position of the moving object to a destination, and guiding the moving path of the moving object according to the calculated path. It is equipped with a movement route guidance module. Further services, for example, broadcast waves such as DMB (Digital Multimedia Broadcasting) or FM (Frequency Modulation) broadcasting, CDMA (Code Division Multiple Access) or GSM (Global System for Mobile communication) It also uses the same mobile communication.

However, in the case of broadcasting waves such as DMB or FM broadcasting, bidirectional communication is impossible. Therefore, bidirectional communication means such as CDMA and GSM are basically required, and thus, a low cost navigation system for CDMA modem or GSM modem is developed. It is causing a lot of trouble.

In order to solve this problem, various methods have recently emerged to provide a low-cost navigation service by actively using a mobile communication terminal carried by many users. Conventional navigation services using the mobile communication terminal use the mobile communication terminal only as a function of a modem for communication and a monitor for displaying predetermined information for guiding a moving path of the mobile object. That is, in the related art, a user connects to a map information providing center using his mobile communication terminal to inform the current position of the moving object or the moving start position and the destination of the moving object, and includes the current position of the moving object or the moving start position and the destination of the mobile body. To download all the map data and traffic information data, such as to display the downloaded map data and traffic information data on the screen to guide the moving path of the moving object.

However, the above-described conventional technology sets the current position of the moving object or the moving start position and the destination of the moving object by accessing the map information providing center through the mobile communication terminal, and sets the current position of the moving object or the moving starting position and the destination of the moving object. There is a problem in that it takes a lot of communication time to download and use all of the corresponding map data and traffic information data, resulting in an economic burden on the user with a lot of communication costs.

In addition, the map data may be stored in the mobile communication terminal and only traffic information data may be downloaded and used from the map information providing center. However, in order to store all the map data, the memory capacity must be very large, and thus the size of the mobile communication terminal is increased. There was a problem that became large.

It is therefore an object of the present invention to provide a moving route guidance method using moving point of interest data which can effectively guide the moving route of the moving object while using less memory and reducing the communication time with the map information providing center. have.

In general, map data may be divided into point of interest data, background map data, road map data, and route search map data. The point of interest data includes a point of interest index, a destination name, an address, a location and a classification code. The background map data includes polyline, attribute information such as thickness and color of the polyline, polygon, attribute information such as thickness and color of the polygon, and the like. The road map data includes link attribute information such as a link index, a road type of a link, a player, a road width, node information, shape point information, and the like. The route search map data includes image information of each link, intersection rotation information such as whether it is possible to go straight at the intersection, whether to turn left, and whether it is possible to turn right, and link connection information connecting the links.

According to the present invention, in the map data, only the map data, that is, the point of interest data, can be set in the mobile communication terminal in advance in the mobile communication terminal. Is downloaded from the map information center and used to guide the movement path of the moving object.

Therefore, according to the method for guiding a moving route of a mobile object using the mobile communication terminal of the present invention, the central processing unit reads out points of interest data pre-stored in the map storage unit, displays them on the display unit, and displays the displayed points of interest. Set the moving start position and destination of the moving object using the data.When the moving start position and the destination of the moving object are set, the central processing unit accesses the map information providing center and transmits the moving start position and the destination of the moving object. Download background map data, road map data, and route search data from the moving start position to the destination in the memory, and download the downloaded background map data, road map data, route search data, and point of interest data previously stored in the map storage. It is characterized in that for guiding the movement path of the moving object.

The display of the point of interest data is executed when an execution command of a navigation service is input. The moving start position of the moving object in the above process is characterized in that the current position of the moving object detected by the navigation message received by the GPS receiving module.

The data downloaded from the map information providing center may further include traffic information data between a moving start position of the moving object and a destination or moving route data for guiding a moving route of the moving object from the moving start position of the moving object to the destination. do.

The moving path guidance of the moving object is determined by the central processing unit to determine the current position, orientation, and moving speed of the moving object, and reads map data of a predetermined area based on the detected current position of the moving object from the map storage and the memory. Characterized in that the current position, azimuth and moving speed of the determined moving object is matched to the read map data and displayed on the display unit.                         

The current position of the moving object is determined by the central processing unit by receiving a signal from the GPS receiving module, and the orientation of the moving object is determined by the central processing unit by receiving a signal from the geomagnetic sensor module. The central processing unit is characterized by receiving the detection signal of the speed detection module to determine.

The azimuth and moving speed of the moving object may be corrected according to the determined ambient temperature or air pressure by determining the ambient temperature of the mobile communication terminal detected by the temperature sensor module or the air pressure detected by the air pressure sensor module.

And rotate, reduce or enlarge the map displayed on the display unit according to a command input from the command input unit.

Hereinafter, with reference to the accompanying drawings will be described in detail a method for guiding a moving path of a mobile body using a mobile communication terminal of the present invention.

1 is a block diagram showing the configuration of a mobile communication terminal to which the movement path guidance method of the present invention is applied. As shown in the drawing, the user's voice signal is input through the microphone 100 and the voice signal of the other party is outputted to the speaker 102 so as to make a phone call through the telephone call unit 104 and the antenna 106. Demodulates the received voice signal of the other party and outputs it to the telephone call unit 104, modulates the voice signal of the user output from the telephone call unit 104, transmits it through the antenna 106, and provides a map information providing center. (Not shown in the drawing) performs communication with the background map data, road map data and route search data among the map data, the demodulator 108 for downloading traffic information data, and location information transmitted by the GPS satellites. GPS receiving module 110 for receiving a signal through the antenna 106, a geomagnetic field sensor module 112 for detecting a geomagnetic field and detecting the orientation of the mobile body with the detected geomagnetic field, and a moving speed of the mobile body Speed detection module 114 for detecting the temperature, temperature sensor module 116 for detecting the ambient temperature of the mobile communication terminal, barometric pressure sensor module 118 for detecting the ambient air pressure of the mobile communication terminal, and among the map data The map storage unit 120, which stores only the point data in advance, controls the telephone call unit 104 and the demodulator 108 to make a telephone call, and the GPS reception module 110 receives the navigation. The position of the moving object is determined by the message, the orientation of the moving object is determined by the output signal of the geomagnetic sensor module 112, and the traveling speed of the moving object detected by the speed detection module 114 is measured by the temperature sensor module 116. And a central processing unit 122 controlling the display according to the map data after correcting according to the temperature and air pressure detected by the barometric pressure sensor module 118, and a telephone call state under the control of the central processing unit 122. Of the mobile body A display unit 124 for displaying a map matching a position and a bearing, a command input unit 126 for inputting a command according to a user's operation to the central processing unit 122, and job data of the central processing unit 122; And a memory 128 for storing the downloaded background map data, road map data, route search data, and traffic information data.

The speed detection module 114 includes an acceleration sensor 114a for detecting the acceleration of the moving object, an integrator 114b for integrating the acceleration detected by the acceleration sensor 114a, and an output signal of the integrator 114b. It accumulated and comprised the speed accumulator part 114c which outputs the traveling speed of a mobile body.

In the mobile communication terminal having such a configuration, the central processing unit 122 controls the telephone call unit 104 and the demodulator 108 when the user commands the telephone call by operating the command input unit 126. The voice signal is input through the microphone 100, processed by the telephone call unit 104, modulated by the modulator 108, and then controlled to be transmitted through the antenna 106 and received through the antenna 106. The voice signal of the other party is demodulated by the demodulator 108, processed by the telephone call unit 104, and then output to the speaker 102 so that the user can make a phone call.

When the user manipulates the command input unit 126 to command the operation of the navigation service, the CPU 122 reads the POI data stored in the map storage 120 and displays the read POI data in the display unit 124. ) To allow the user to set a moving start position and a destination to start moving the moving object.

Here, the movement start position may be set to the current position of the moving object detected by the GPS satellite navigation message received by the GPS receiving module 110. In other words, GPS is a satellite navigation system developed by the US Department of Defense, and a plurality of GPS satellites are positioned on a geostationary orbit above the earth to transmit navigation messages, and among the navigation messages transmitted by the GPS satellites. The GPS receiving module 110 receives a navigation message transmitted by at least four GPS satellites, and the distance between the GPS satellite and the GPS receiving module 110 and the position of the GPS satellite are received as the received navigation message. The position vector of the GPS receiving module 110 is calculated by detecting a vector or the like. The GPS can accurately detect the position of the GPS receiving module 110, which receives the navigation message of the GPS satellite, anywhere in the world as a three-dimensional coordinate value. In the present invention, the central processing unit 122 is a GPS receiving module ( The navigation message received by 110 may detect the current position of the moving object, and set the detected current position of the moving object as a moving start position of the moving object.

When the moving start position and the destination of the moving object are set, the central processing unit 122 accesses the map information providing center through the modulator 108 and the antenna 106 to transmit the moving start position and the destination of the set moving object. do.

Then, the map information providing center determines the moving start position and the destination of the moving object transmitted by the mobile communication terminal, and the background map data, the road map data and the route search data between the determined moving start position and the destination, and the traffic information data. Together with the mobile communication terminal.

As such, the background map data, the road map data, the route search data, and the traffic information data transmitted by the map information providing center are downloaded by the central processing unit 122 of the mobile communication terminal through the antenna 106 and the modulator 108. It is stored in the memory 128, the movement of the mobile communication terminal using the stored background map data, road map data, route search data and traffic information data and the point of interest data previously stored in the map storage unit 120 , To guide the movement route of the predetermined moving object.

When guiding the movement of the moving object, the central processing unit 122 receives the detection signal of the geomagnetic field sensor module 112 and determines the orientation of the moving object. The geomagnetic field sensor module 112 detects the earth's magnetic field and detects the orientation by the detected magnetic field. The central processing unit 122 determines the orientation of the moving object based on the output signal of the geomagnetic field sensor module 112. .

The acceleration sensor 114a of the speed detecting module 114 detects the moving acceleration of the moving object according to the movement of the moving object, the integrator 114b integrates the detected acceleration into a speed signal, and outputs the integrator 114b. The speed accumulator 114c accumulates and outputs the signal to the central processing unit 122, and the central processing unit 122 determines the moving speed of the moving object based on the output signal of the speed accumulator 114c.

In addition, the temperature sensor module 116 detects the ambient temperature of the mobile communication terminal and inputs it to the central processing unit 122, and the air pressure sensor module 118 detects the ambient air pressure of the mobile communication terminal to the central processing unit 122. Enter it. Then, the central processing unit 122 determines the ambient temperature and air pressure of the mobile communication terminal based on the output signals of the temperature sensor module 116 and the barometric pressure sensor module 118, and determines the orientation of the determined moving object according to the determined temperature and air pressure. Correct the movement speed.

That is, the geomagnetic sensor module 112 is an error occurs in the value of the geomagnetic field detected according to the ambient temperature and air pressure due to the operation characteristics of the geomagnetic sensor, the central processing unit 122 is the temperature sensor module 116 and air pressure Correct the orientation of the moving body according to the ambient temperature and air pressure of the mobile communication terminal determined by the output signal of the sensor module 118, and the acceleration sensor 114a is an error occurs in the measured value according to the ambient temperature and air pressure The central processing unit 122 corrects the moving speed of the moving object detected by the speed detecting module 114 as the temperature detected by the temperature sensor module 116 increases, and the speed detecting module 114 when the temperature is low. The moving speed of the detected moving body is slowly corrected, and the moving speed of the moving body is slowly corrected when the air pressure detected by the air pressure sensor module 118 is high, and the moving body is low when the detected air pressure is low. To accurately detect the moving speed of the movable body to quickly compensate for the moving speed.

When the azimuth and moving speed correction of the moving object is completed, the central processing unit 122 maps the point of interest data of a predetermined area around the current position of the moving object detected by the navigation message received by the GPS receiving module 110. In operation 120, the background map data, the road map data, the route search data, and the traffic information data are read out together in the memory 128.

When the map data and the traffic information data are read, the central processing unit 122 matches the current position of the moving object, the azimuth and moving speed of the corrected moving object with the map data, and outputs and displays them on the display unit 124. Guide the movement path of the moving object.

On the other hand, Figure 2 is a signal flow diagram showing a movement path guidance method of the present invention. As shown in FIG. 2, when a user requests a navigation service by operating a mobile communication terminal in step 200, the central processing unit 122 reads point of interest data from the map storage unit 120 in step 202. The display is output to the display unit 124, and in step 204, the user manipulates the mobile communication terminal to set a moving start position and a destination where the moving object will start moving.

Here, the movement start position may be set to the current position of the moving object determined by the central processing unit 122 as the output signal of the GPS receiving module 110, that is, the current position of the mobile communication terminal.

When the moving start position and the destination of the moving object are set, the central processing unit 122 controls the demodulator 108 in step 206 to access the map information providing center, and in step 208 to the map information providing center. After transmitting the set moving start position and destination of the moving object, in step 210, the background map data, the road map data, the route search data and the traffic information data provided by the map information providing center are downloaded and stored in the memory 128. .

Here, the present invention may download and store only the background map data, road map data and route search data from the map information providing center, and the map information providing center moves from the moving start position to the destination using the traffic information data. The route may be searched, and the movement route data of the searched moving object may be downloaded and stored along with the background map data, road map data, route search data, and traffic information data.

After downloading and storing the background map data, the road map data, the route search data and the traffic information data from the map information providing center in this way, the central processing unit 122 outputs the current signal of the moving object as the output signal of the GPS receiving module 110. The moving path of the moving object is guided while determining the position.

In the movement guide of the moving object, the central processing unit 122 receives the GPS satellite position information signal received by the GPS receiving module 110 in step 212 to determine the current position of the moving object.

In the next step 214, the central processing unit 122 inputs the geomagnetic field detection signal of the geomagnetic field sensor module 112, detects the orientation of the moving object by the input detection signal of the geomagnetic field sensor module 112, and In 216, the central processing unit 122 receives the output signal of the speed detection module 144 to determine the moving speed of the moving object.

In the next step 218, the output signal of the temperature sensor module 116 and the barometric pressure sensor module 120 is input to determine the ambient temperature and air pressure of the moving object, and in accordance with the temperature and air pressure determined in step 220 Correct the bearing and moving speed.

Here, the current position of the moving object, the determination and correction of the orientation, and the moving speed determination and correction of the moving object may be performed in any order. For example, after determining and correcting the orientation of the moving body, the current position can be determined, and the moving speed can be determined and corrected.In addition, the moving speed of the moving body can be determined and corrected first, then the current position is determined, and the orientation and The order can also be arbitrarily changed, such as a correction.

When the current position and orientation of the moving object is determined as described above, and the correction of the moving speed is completed, the central processing unit 122 stores the map storage unit 120 and the memory based on the detected current position of the moving object in step 222. At 128, the map data is read. That is, the central processing unit 122 reads point-of-interest data of a predetermined area including the current position and the destination of the moving object from the map storage unit 120, and the background map data, the road map data, and the route search from the memory 128. Read data and traffic information data.

When the map data is read, the central processing unit 122 matches the current map position, azimuth, and moving speed of the moving object with the read map data in step 224, and then outputs it to the display unit 124 in step 226. Display the guide to the moving path of the moving object.

As the user manipulates the command input unit 126 in the next step 228, the central processing unit 122 rotates, enlarges or reduces the map displayed on the display unit 124, and displays it.

That is, when a mobile device is used to operate a mobile terminal to perform a navigation operation, the mobile terminal is mounted on a cradle. At this time, the moving direction of the moving object and the direction of the map displayed on the display unit 124 may not coincide with each other.

Therefore, in the present invention, when the user manipulates the command input unit 126 to rotate the map, the map displayed on the display unit 124 is rotated to match the moving direction of the moving object with the map displayed on the display unit 124. Can be.

On the other hand, while the present invention has been shown and described with respect to specific preferred embodiments, various modifications and changes of the present invention without departing from the spirit or field of the invention provided by the claims below It can be easily understood by those skilled in the art.

As described above, the present invention stores the point of interest data in the mobile communication terminal, and downloads the background map data, road map data, route search map data and traffic information data from the map information providing center to guide the moving path of the mobile body; This can effectively guide the movement path of the moving object while reducing the memory capacity and communication time.

Claims (8)

A tenth step of the central processing apparatus reading point of interest data pre-stored in the map storage unit and displaying the point of interest data on the display unit; A twentieth step of setting a moving start position and a destination of the moving object using the point of interest data displayed in the tenth step; When the moving start position and the destination of the moving object are set in the twentieth step, the central processing unit accesses the map information providing center, transmits the moving start position and the destination of the moving object, and the background map from the moving start position of the moving object to the destination. A thirtieth step of downloading the data, the road map data, and the route search data into a memory; And A 40th process of displaying the background map data, the road map data and the route search data downloaded in the 30th step and the point of interest data stored in the map storage unit under the control of the central processing unit to guide the moving path of the moving object; Method of guiding a moving path of a mobile object using a mobile communication terminal. The method of claim 1, wherein the tenth process comprises: A method of guiding a moving path of a mobile object using a mobile communication terminal, characterized in that executed when a command to execute a navigation service is input. According to claim 1, wherein the moving start position of the moving body of the 20th process is; A method for guiding a moving path of a moving object using a mobile communication terminal, characterized in that the current position of the moving object detected by the navigation message received by the GPS receiving module. According to claim 1, Data downloaded from the map information providing center of the thirtieth process is; Moving path guidance of the moving object using a mobile communication terminal, characterized in that it further comprises traffic information data between the moving start position of the moving object and the destination or moving route data for guiding the moving path of the moving object from the moving start position of the moving object to the destination. Way. The method of claim 1, wherein the 40th process comprises: A forty-first step of the central processing unit determining the current position, azimuth and moving speed of the moving object; A step 42 of reading a background map data, a road map data, a route search data, and a point of interest data of a predetermined area from the map storage unit and the memory based on the detected current position of the moving object after the forty-first step; And And a forty-third step of matching the determined current position, azimuth, and moving speed of the moving object with the background map data, the road map data, the route search data, and the point of interest data read out in the forty-second step. Method for guiding a moving path of a mobile body using a mobile communication terminal. The method of claim 5, wherein the forty-first process comprises: The central processing unit receives the signal from the GPS receiving module to determine the current position of the moving object, receives the signal from the geomagnetic sensor module to determine the orientation of the moving object, and receives the detection signal of the speed detection module to determine the moving speed of the moving object. Method for guiding a moving path of a mobile body using a mobile communication terminal, characterized in that determining. According to claim 5 or 6, wherein the orientation and the moving speed of the moving body; A method for guiding a moving path of a mobile body using a mobile communication terminal, comprising: determining an ambient temperature of the mobile communication terminal detected by the temperature sensor module or an air pressure detected by the barometric pressure sensor module, and correcting the result according to the determined ambient temperature or air pressure. The method of claim 5, further comprising: after the 43rd process; And a forty-fourth step of rotating, reducing, or enlarging a map displayed on the display unit according to a command input from a command input unit.

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