KR19990010257A - Accompanied Vehicle Positioning Device Using Vehicle Navigation System - Google Patents

Abstract

The present invention relates to a vehicle positioning system using a vehicle navigation system, to determine the position of a plurality of vehicles with a vehicle navigation system in order to display the position of a plurality of accompanying vehicles employing the vehicle navigation system on a monitor. A control switch unit 18 for designating a controller and a CPU 22a for wirelessly transmitting the current vehicle position in response to the position designation of the vehicle and for displaying a position signal from another vehicle on a monitor. The position signal processing unit 50 for generating the position signal of the vehicle under the control of 22a, and modulating the position signal at the channel frequency set by the channel frequency setting unit 52 under the control of the CPU 22a. The signal modulator 54 and the RF signal receiver 60 to demodulate the position signals from the other vehicle received by the RF transmitter 60 to perform the wireless transmission through the signal transmitter 56 to the decoder 14. A signal demodulation unit 62 which is applied to the CPU 22a so as to be displayed on the monitor, and a channel frequency of the position signal of the other vehicle is determined and applied to the CPU 22a to channel the position signal of the corresponding vehicle. And a channel frequency judging unit 64 for varying the frequency. The monitor 28 displays the position of the corresponding vehicle, the position of the other accompanying vehicle, the number of the accompanying vehicle, and the distance between the accompanying vehicles. will be.

Description

Accompanied Vehicle Positioning Device Using Vehicle Navigation System

The present invention relates to an apparatus for identifying a traveling vehicle using a vehicle navigation system, and more particularly, to display a position of the accompanying vehicles on a monitor while a plurality of vehicles employing the vehicle navigation system are traveling toward the same destination. The present invention relates to an accompanying vehicle positioning device using a vehicle navigation system that enables the positioning thereof.

Recently, when a driver designates a destination for travel, a vehicle navigation system called 'Navigation' has been developed to display map information on a monitor and perform screen guidance on the shortest distance to the destination. It is a trend that is applied to practical use.

1 is a block diagram of a vehicle navigation system according to a conventional example, where reference numeral 10 denotes a disk-shaped storage medium containing compressed map information data at a predetermined scale ratio, and 12 denotes a storage medium ( 10 denotes a storage medium reproducing unit for reading the map information data recorded in 10), 14 denotes a decoder for decoding the map information data read out from the storage medium 10 by the storage medium reproducing unit 12, and 16 An audio processing unit which processes and outputs speech information decoded by the decoder 14 is shown.

In addition, 18 denotes a control switch unit for inputting the destination of the vehicle to the driver based on the map information reproduced from the storage medium 10, and the control switch unit 18 displays a screen display state of the map information data. Control items such as 'Menu', 'Information', 'Reset', 'Enlargement', 'Reduction', etc. It will be included. 20 denotes an encoder that encodes a switch signal for menu, information, reset, enlargement, and reduction inputted from the control switch unit 16.

22 is a navigation processor which calculates the shortest distance to a destination of a driver encoded and applied by the encoder 20 based on the map information data from the storage medium 10 decoded and applied by the decoder 14. As shown, the navigation processor 22 calculates the shortest distance to the destination based on the map information data, the decoder 14 and / or the encoder 20, and the CPU 22a. Interface 22b for data interfacing and interfacing vehicle position information to the CPU 22a and screen display data interfacing executed under the control of the CPU 22a, and program data executed by the CPU 22a are recorded. ROM 22c and RAM 22d for providing an area necessary for the operation of the CPU 22a.

24 indicates a vehicle position discrimination unit for determining the current position of the vehicle when the navigation processor 22 calculates the shortest distance to the destination, and 26 indicates control of the CPU 22a of the navigation processor 22. A monitor display control unit for displaying map information data applied under the monitor 28 is shown, and 28 represents a video memory provided for the monitor display control unit 26. FIG.

2 is a view showing the configuration of the vehicle position discrimination unit shown in FIG. 1, wherein the vehicle position discrimination unit 24 is a first vehicle position discrimination unit for determining the position of the vehicle based on the geomagnetism. And a second vehicle position discriminating unit 24b for discriminating the position of the vehicle based on the position 24a and the global positioning system (GPS).

Preferably, the first vehicle position determining unit 24a includes a geomagnetic sensor 240 made up of a geomagnetic compass for detecting the direction of the geomagnetic and detecting the traveling direction of the vehicle, and a vehicle speed detecting unit 242 for detecting a corresponding vehicle speed. And a first signal processor for detecting the current position of the vehicle by detecting a moving direction of the vehicle and a relative distance from the data pointer in response to the direction detection signal transmitted from the geomagnetic sensor 240 and the vehicle speed detector 242. 244).

In addition, the second vehicle position determining unit 24b includes a GPS receiver 246 for receiving radio waves transmitted from four GPS satellites, and a radio wave reception timing of the GPS receiver 246 for detecting an absolute current position of the vehicle. Based on the second signal processor 248 for determining the distance between the GPS satellite and the vehicle, and detecting the strength of the radio wave received by the GPS receiver 246. It comprises a GPS signal error detection unit 250 for generating a measurement error increase signal when a certain value is exceeded or, for example, the intensity of the radio wave is below a predetermined level when the vehicle passes through the tunnel.

In addition, the vehicle position discrimination unit 24 selectively switches the output of the first vehicle position discrimination unit 24a or the second vehicle position discrimination unit 24b to interface 22b of the navigation processor 22. It also includes a switch unit 252 to be applied to the CPU (22a) through. That is, the switch unit 252 outputs from the second signal processing unit 248 of the second vehicle position determining unit 24b using the GPS satellites when the measurement error signal is not detected by the GPS signal error detection unit 250. On the other hand, when a measurement error signal is detected by the GPS signal error detection unit 250, a position signal output from the first signal processing unit 244 of the first vehicle position discrimination unit 24a using the geomagnetism is selected. Will be selected.

According to the above-described vehicle navigation system, when the storage medium 10 is mounted on the storage medium reproducing unit 12 and read, the read map information data is decoded by the decoder 14 and the navigation processing unit 22 is executed. Is applied to the CPU 22a via the interface 22b. The CPU 22a then displays the map information on the monitor 28 in the monitor display control unit 26 based on the program stored in the map information data in the ROM 22c.

In that state, when the input of the destination is made from the control switch unit 18, the input is encoded by the encoder 20 and transmitted to the CPU 22a through the interface 22b, and thus the CPU 22a. ) Determines the current position of the vehicle that is provided switchably from the first vehicle position discrimination unit 24a or the second vehicle position discrimination unit 24b constituting the vehicle position discrimination unit 24 and monitors the monitor display control unit 26. Is displayed on the monitor 28.

Accordingly, the driver can move to the shortest distance to the destination by referring to the road information guided from the current position of the corresponding vehicle displayed on the monitor 28.

By the way, a driver who drives a vehicle employing the vehicle navigation system can easily determine the current position of the vehicle with the assistance of the vehicle navigation system. In the state of driving toward the other side, the position of the other vehicles accompanying it cannot be confirmed.

That is, in order to identify the position of the accompanying vehicle having a position difference that cannot be visually confirmed while the plurality of vehicles are moving toward the same destination, the current position identified by the vehicle navigation system may be, for example, a mobile phone or a car phone. There is a disadvantage of having to mutually confirm using a communication means.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and when a plurality of vehicles equipped with a vehicle navigation system are traveling toward the same destination, the position identified by the navigation system of the accompanying vehicle is displayed on the monitor to present It is an object of the present invention to provide a companion vehicle positioning device using a vehicle navigation system to determine the position.

In order to achieve the above object, according to a preferred embodiment of the present invention, the map information stored in the storage medium is displayed on the monitor and is determined from the current vehicle position determined by the vehicle position discrimination unit to the destination input from the control switch unit. A vehicle having a vehicle navigation system for guiding road information, the vehicle comprising: a control switch unit for designating a position determination of a vehicle having a vehicle navigation system; and wirelessly transmitting the current vehicle position in response to the position designation of the vehicle. A CPU for displaying a position signal from another vehicle on a monitor, a position signal processing unit for generating a position signal of a vehicle under control of the CPU, and the position at a channel frequency set by a channel frequency setting unit under control of the CPU Signal modulator and RF receiver for modulating the signal and transmitting it wirelessly through RF signal transmitter. A signal demodulation unit for demodulating position signals from other new vehicles and applying them to the CPU through a decoder to be displayed on the monitor; and determining a channel frequency of a position signal of the other vehicle and applying the same to the CPU to determine the corresponding vehicle. A companion vehicle positioning apparatus using a vehicle navigation system comprising a channel frequency determination unit for varying a channel frequency of a position signal of the signal is provided.

Preferably, the position signal includes a current position and a vehicle number of a corresponding vehicle, and the position of the corresponding vehicle, the position of the other accompanying vehicle, the number of the accompanying vehicle and the distance between the vehicles are displayed on the monitor.

According to the accompanying vehicle positioning apparatus using the vehicle navigation system of the above-described configuration, when a plurality of vehicles employing the vehicle navigation system move toward the same destination, when the control switch for positioning the vehicle is operated, the CPU The position signal including the current position of the vehicle and the vehicle number under wireless control is transmitted wirelessly to be displayed on the monitor of the other accompanying vehicle, and the position signal and the vehicle number of the other accompanying vehicle transmitted to the corresponding vehicle are By displaying on the monitor of the vehicle, it is possible to confirm the position of the accompanying vehicles.

1 is a view showing a schematic block configuration of a vehicle navigation system according to a conventional example,

2 is a view showing the configuration of the vehicle position discrimination unit shown in FIG.

3 is a block diagram showing an accompanying vehicle positioning apparatus using a vehicle navigation system according to the present invention;

4 is a diagram illustrating an example in which the position of the accompanying vehicle is displayed on the screen by the accompanying vehicle positioning apparatus using the vehicle navigation system according to the present invention.

Explanation of symbols for main parts of the drawings

10: storage medium, 22: navigation processing unit,

22a: CPU, 18: control switch unit,

28: monitor, 50: position signal processing unit,

52: channel frequency setting section, 54: signal modulation section,

56: RF signal transmitter, 60: RF receiver,

62: signal demodulation section, 64: channel frequency determination section.

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

3 is a block diagram of the accompanying vehicle positioning apparatus using the vehicle navigation system according to the present invention. Reference numeral 14 decodes the map information from the storage medium 10 described in FIG. 18 shows a decoder for decoding an RF position signal transmitted wirelessly, and 18 shows a control switch unit further comprising a control switch for confirming a position of a companion vehicle assumed in the present invention in addition to the display selection function of map information described in FIG. 1. 20 denotes an encoder that encodes a control switch function set by the control switch section 18. In FIG. In addition, 22a configures the navigation processor 22 shown in FIG. 1 to perform the control for displaying the position of the accompanying vehicle decoded by the decoder 14 while controlling the position display of the vehicle corresponding to the map information. A CPU 22a is shown, and 22b represents an interface for interfacing the input / output of data to the CPU 22a.

50 adds a vehicle number corresponding to the position data of the corresponding vehicle determined by the CPU 22a to wirelessly transmit to the other vehicle accompanying the current position of the vehicle under the control of the CPU 22a. And a position signal processing unit for performing analog conversion processing, and 52 denotes a plurality of radio channel frequencies (preferably UHF frequencies) specified in advance among the accompanying vehicles in order to transmit the position signals of the vehicles corresponding to the control of the CPU 22a. Channel frequency setting unit for setting one of the bands). 54 denotes a signal modulator for modulating a position signal of a corresponding vehicle provided by the position signal processor 50 to a wireless channel frequency set and applied by the channel frequency setting unit 54, and 56 is a signal modulator. An RF signal transmission section for wirelessly transmitting the modulated position signal and vehicle number signal at 54 is shown.

In addition, 60 denotes an RF receiver for receiving an RF position signal of a companion vehicle transmitted to a corresponding vehicle, and 62 denotes a position data by the decoder 14 by demodulating the RF signal received by the RF signal receiver 60. The signal demodulator outputs the signal demodulator to be applied to the decoding process, and 64 indicates the channel frequency of the RF signal demodulated by the signal demodulator 62 to transmit the position signal from the vehicle. A channel frequency determining unit applied to the CPU 22a to be applied to matching.

Next, the operation of the accompanying vehicle positioning apparatus using the vehicle navigation system according to the present invention having the above-described configuration will be described in detail with reference to the screen display example shown in FIG.

First, as described with reference to FIGS. 1 and 2, while driving under the control of the CPU 22a while displaying map information from the current position of the vehicle corresponding to the monitor 28 to a destination designated by the driver, When the control switch 18 is operated by the control switch unit 18 to check the position of the accompanying vehicle, the CPU 22a transmits the position data of the corresponding vehicle through the interface 22b to the position signal processor 50. The position signal processing unit 50 generates a position signal to which the vehicle number corresponding to the vehicle position data is added and performs analog conversion processing. The analog position signal is applied to the signal modulator 54 and modulated to a channel frequency band specified under the control of the CPU 22a, and the modulated position signal is transmitted to the RF signal transmitter 56 side. The position of the vehicle is displayed on the monitor of the accompanying vehicle on which the position signal is received.

Then, when a control switch for positioning is performed from the control switch unit 18 with respect to a position signal transmitted from another vehicle that is accompanied, the control switch is encoded by the encoder 20 to interface 22b. Through the CPU 22a.

In the state, when the RF position signal transmitted from another companion vehicle transmitted through the radio channel is received by the RF receiver 60, the RF position signal is demodulated by the demodulation processor 62, and the demodulated other companions. The position signal of the vehicle is decoded by the decoder 14 and applied to the CPU 22a via the interface 22b.

Then, the CPU 22a adjusts the position position of the other accompanying vehicle in a state where the position of the corresponding vehicle described with reference to FIGS. 1 and 2 is displayed on the monitor 28 by the monitor display control unit 26. The monitor display control section 26 causes the display on the monitor 28.

That is, as illustrated in FIG. 4, the position of the vehicle displayed on the monitor 28 is displayed with the position 28a of the corresponding vehicle and the position 28b of the other vehicle, and other accompanying vehicles included in the position signal. The vehicle number and the inter-vehicle distance are displayed on the window 28c, thereby making it possible to mutually identify the current position of a plurality of accompanying vehicles.

Meanwhile, the channel frequency of the position signal of the other accompanying vehicle demodulated by the signal demodulator 62 is determined by the channel frequency determination unit 64 and applied to the CPU 22a through the interface 22b. The CPU 22a preferably controls the channel frequency setting unit 52 so that the channel frequency for transmitting the position signal of the corresponding vehicle matches the channel frequency of the other accompanying vehicle. Therefore, the channel frequency of the position signal modulated by the signal modulator 54 corresponds to the channel frequency of the other accompanying vehicle, thereby facilitating the demodulation process of the RF position signal.

As described above, according to the accompanying vehicle positioning apparatus using the vehicle navigation system according to the present invention, when a plurality of vehicles employing the vehicle navigation system move toward the same destination, the positions of the other accompanying vehicles are displayed on the monitor. Accordingly, it becomes possible to confirm the position of the accompanying vehicle, and thus, an artificial verification operation using a separate communication means for confirming the position of the accompanying vehicle becomes unnecessary.

Claims (3)

The map information stored in the storage medium 10 is displayed on the monitor 28, and the road information from the current vehicle position determined by the vehicle position discrimination unit 24 to the destination input by the control switch unit 18 is obtained. A vehicle equipped with a navigating vehicle navigation system, comprising: a control switch unit (18) for designating positioning of a plurality of vehicles equipped with a vehicle navigation system, and wirelessly storing the current vehicle position in response to the positioning designation of the vehicle; The CPU 22a for transmitting and displaying the position signals from other vehicles on the monitor, the position signal processing unit 50 for generating position signals of the vehicle under the control of the CPU 22a, and the CPU 22a. Under control, received by the signal modulator 54 and the RF receiver 60 to modulate the position signal at the channel frequency set by the channel frequency setting unit 52 so that it is wirelessly transmitted through the RF signal transmitter 56. Other vehicles A signal demodulator 62 which demodulates a position signal from the signal and applies it to the CPU 22a through a decoder 14 for display on the monitor; 22a) is applied to the vehicle navigation system, characterized in that it comprises a channel frequency determination unit (64) for varying the channel frequency of the position signal of the vehicle. The apparatus of claim 1, wherein the position signal includes a current position and a vehicle number of a corresponding vehicle. 3. A companion system using a vehicle navigation system according to claim 1 or 2, wherein the position of the corresponding vehicle, the position of the other accompanying vehicle, the number of the accompanying vehicle and the distance between the vehicles are displayed on the monitor 28. Vehicle positioning device.