KR19990002428A - Communication method using car navigation system - Google Patents

Abstract

The present invention relates to a communication method using a car navigation system capable of informing each other and communicating between vehicles provided with a car navigation system.

The communication method using the car navigation system includes a GPS receiver 40 receiving GPS data from a GPS satellite, a map database 50 having sufficient road and area map information stored therein, and a current position of the vehicle on a map. In a vehicle equipped with a monitor 30, a navigation ECU 35 for calculating the data received from the GPS receiver 40 and the map database 50 to output to the monitor 30,

Further comprising a mutual communication box 45 connected to the navigation ECU 35, by using the communication box 45 to exchange information between the vehicles, the position of the second vehicle (2) that is the other party and the first vehicle that is itself The position of (1) is displayed on the monitor 30 at the same time.

As a result, the vehicles equipped with the car navigation system can grasp the position of each other, voice communication can be performed, and the connection network can be firmly established between the vehicles.

Description

COMMUNICATION METHOD USING CAR NAVIGATION SYSTEM

The present invention relates to a communication method using a car navigation system, and more particularly, to a communication method using a car navigation system that can notify each other and communicate with each other between vehicles provided with a car navigation system.

A case of a car navigation system will be described with reference to FIG. 1.

Referring to FIG. 1, a GPS receiver antenna 1 is mounted at a center of a pad of an instrument panel 2 of a vehicle, and a GPS receiver antenna 3 is installed inside a rear rear tray 4 of a vehicle, and a GPS receiver 5 is provided. Is connected to the GPS receiving antennas (1, 3).

A CD-ROM player 7 is installed in the luggage room 6 located at the rear of the vehicle, a navigation ECU 9 is connected to the CD-ROM player 7, and the navigation ECU 9 is connected to a driver's seat. The LCD display panel 11 mounted to the instrument panel 2 located between the seats is connected.

The geomagnetic sensor 13 is mounted on the roof 12 of the vehicle.

The GPS receiving system as described above measures the arrival time of the radio wave emitted from the GPS satellite and calculates the distance from the satellite so that the position of the vehicle is known. It is done by principle.

In this method, GPS satellites are equipped with a high-precision clock, and the radio wave time signal is transmitted. Therefore, the receiver side can know the reception time of the radio wave by the clock of the receiver. The km / s divided by the distance is the distance between the satellite and the car.

At the same time, the orbital position of each GPS satellite is also transmitted, so the reception point (car position) can be obtained by the intersection of three spheres centered on three satellites. However, if there is an error in the clock between the satellite side and the receiver side, the three spheres will not intersect at one point. Therefore, the clock of the receiver is corrected based on the fourth satellite time by calculating the point at which three spheres intersect at one point by receiving the fourth satellite radio wave.

You can get the latitude, longitude, and altitude by GPS positioning. However, since it is impossible to receive radio waves in buildings, tunnels, and the like in large cities, the geomagnetic sensor 13 uses the estimated value of the current position in reference to the estimated navigation.

The GPS receiving antennas 1 and 3 receive signals from the satellites, the GPS receiver 5 processes the signals received by the GPS receiving antennas 1 and 3, and the CD-ROM player 7 includes roads and Since the map data is input, the navigation ECU 9 calculates the map information and the current position of the vehicle and displays the map information to the driver or the user through the LCD player panel 11.

However, the conventional car navigation system configured as described above has a problem in that there is no connection network between vehicles, such as communication between vehicle and location information between vehicles, and communication cannot be performed.

Accordingly, an object of the present invention is to overcome the above-described problems, and an object of the present invention is to provide a communication method using a car navigation system that can communicate with each other and exchange location information between vehicles provided with a car navigation system. have.

As an example of a communication method using a car navigation system for achieving the object of the present invention, a GPS receiver for receiving GPS data from a GPS satellite, a map database in which sufficient road and area map information is stored, and a vehicle on a map. In a vehicle equipped with a monitor to display the current position, and a navigation ECU for calculating the data received from the GPS receiver and the map database and output to the monitor,

It further comprises a mutual communication box connected to the navigation ECU, characterized in that by using the communication box to exchange information between the vehicle to display the position of the other vehicle and the vehicle position at the same time on the monitor.

With this configuration, the vehicle installed with the car navigation system can monitor the location information of the other party's vehicle, and can exchange information with each other.

1 is a perspective view of a vehicle with a conventional car navigation system

2 is a schematic diagram of a communication method using a car navigation system according to the present invention;

3 is a perspective view of a monitor according to the present invention;

<Explanation of symbols for main parts of drawing>

1: first vehicle 2: second vehicle

30,31: Monitor 35,36: Navigation ECU

40,41: GPS receiver 45,46: communication box

50,51: Map database

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 and 3.

Referring to FIG. 2, the first vehicle 1 includes a monitor 30 for displaying the location of the vehicle to the driver, a GPS receiver 40 receiving GPS data from GPS satellites, and map data in which local map information is stored. A communication box 45 capable of exchanging information between the base 50 and the vehicle is connected to the navigation ECU 35, respectively, and is controlled by the navigation ECU 35.

In addition, the second vehicle 2 also includes a monitor 31 for displaying the position of the vehicle to the driver, a GPS receiver 41 receiving GPS data from a GPS satellite, and a map database 51 in which local map information is stored. And a communication box 46 capable of exchanging information with each other between the vehicles are connected to the navigation ECU 36, respectively, and controlled by the navigation ECU 36.

Referring to FIG. 3, a monitor 30 mounted on the right side of the instrument panel 57 of the vehicle and displaying the vehicle on a road and a map from the right side of the driver is provided with a plurality of function keys 63 at the top thereof. It receives maps, functions such as zooming in and out of roads and screens.

The LCD screen 65 of the monitor 30 is installed at the center of the monitor 30 to simultaneously display the vehicle of the vehicle and the other party.

With the above configuration, the communication method using the car navigation system of the present invention operates as follows.

The first vehicle 1 in which the car navigation system is installed detects the position of the own vehicle and transmits the position data of the own vehicle to the second vehicle 2 through the communication box 45. Communication box 46 receives the position data and controls the first vehicle 1 and the second vehicle 2 on the monitor 31 of the second vehicle 2 under the control of the navigation ECU 36. Display the position in a different display form.

Similarly, the monitor 30 of the first vehicle 1 also displays the positions of the first vehicle 1 and the second vehicle 2 in different display forms.

In addition, the communication box 45 may be used to perform voice communication between vehicle drivers.

As described above, the communication method using the car navigation system according to the present invention is able to grasp the position between the vehicles equipped with the car navigation system, and can perform voice communication, thereby establishing a connection network firmly between the vehicles. There is.

What has been described above is just one embodiment for carrying out a communication method using a car navigation system according to the present invention, and the present invention is not limited to the above-described embodiment, and the present invention is claimed in the following claims. Various changes can be made by those skilled in the art without departing from the gist of the present invention.

Claims (1)

A GPS receiver 40 receiving GPS data from a GPS satellite, a map database 50 having sufficient road and area map information stored therein, a monitor 30 displaying the current position of the vehicle on a map, and the GPS receiver In a vehicle equipped with a navigation ECU 35 that calculates and outputs data received from the 40 and the map database 50 to the monitor 30, Further comprising a mutual communication box 45 connected to the navigation ECU 35, by using the communication box 45 to exchange information between the vehicles, the position of the second vehicle (2) that is the other party and the first vehicle that is itself A communication method using a car navigation system, characterized by displaying the position of (1) on the monitor (30) at the same time.