KR20000012209A - Radio communication system between vehicles - Google Patents

Abstract

PURPOSE: A radio communication system between vehicles is provided to call by dialing corresponding vehicle ID number without special relay. CONSTITUTION: The radio communication system between vehicles comprises: a radio communication means(150) transmitting corresponding vehicle ID number to call by using common frequency band for LAN, thereby communicating between vehicles; a system memory(20) which general control program is embedded in; a system controller(10) generally controlling overall system in accordance to the control program of said system memory; an input unit(30) selecting various operation mode of the system or receiving vehicle information such as ID or kinds; and a read and write memory(230) being stored the vehicle information.

Description

Wireless communication system between vehicles {RADIO COMMUNICATION SYSTEM BETWEEN VEHICLES}

The present invention relates to a vehicle-to-vehicle wireless communication system, and more particularly, to a short-range wireless communication system that enables radio calls and calls between vehicles running without a separate base station or relay station.

In general, communication between vehicle drivers while driving is generally performed in three ways. First of all, the driver makes a communication by talking the clock, turning on the headlight, or using hand gestures or voice. This is not only accurate communication is difficult and inconvenient, but also there is a risk of a traffic accident. Secondly, in the case of vehicles (e.g., accompanying specific vehicles) equipped with a pre-promised wireless device such as a car phone, communication is performed using a wireless device, which is capable of accurate communication but is equipped with the wireless device. There is still a problem in that it is difficult to communicate with an unspecified vehicle and a wireless device is required when necessary. Third, communication is carried out using a mobile terminal possessed by the vehicle driver (eg, a cellular phone or a personal mobile phone), which is capable of accurate communication, but is limited in reception state or vehicle moving speed and is inherent in the mobile terminal. There is a problem that you must know the number.

As a result, it does not provide simple and convenient communication between unspecified vehicles on the road, and thus cannot communicate with other drivers or passengers in an emergency situation, for example, when asking for directions or finding a dangerous situation in a preceding vehicle. There is discomfort.

Accordingly, the present invention has been made to solve the above problems, by transmitting the vehicle identification number to be called without a special repeater to enable the call and call between the vehicle, providing a communication path and accurate communication between the driver in an emergency The purpose is to provide an inter-vehicle wireless communication system.

Another object of the present invention is to continuously broadcast vehicle location information acquired in connection with a GPS device together with a vehicle identification number in an arbitrary vehicle, and in a specific vehicle receiving the broadcast signal, vehicle identification numbers and vehicle positions of adjacent vehicles. There is provided a wireless communication system that displays information and allows a driver to talk to any vehicle while checking the display screen.

One embodiment of the inter-vehicle wireless communication system of the present invention for achieving the above object is, wireless transmission and reception for enabling a call and a call between vehicles by transmitting a corresponding vehicle identification number to call using a common frequency band for short-range communication It comprises a means.

One embodiment of the inter-vehicle wireless communication system of the present invention for achieving the above object, by receiving the vehicle information and / or location information including the vehicle identification number from other vehicles in close proximity using a common frequency band for short-range communication A wireless transmission and reception means for temporarily storing and displaying vehicle information and location information of another vehicle at a predetermined position on the screen in comparison with the vehicle position information of its own, and transmitting the displayed vehicle identification number to enable communication between vehicles. It is characterized by including.

1 is an internal block diagram of a wireless communication system mounted or mounted in a vehicle according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: vehicle wireless communication system 10: system control unit

20: system memory section 30: key input section

100: data modulation and demodulation unit 110: compressor

120: voice modulator 130: expander

140: volume controller 150: wireless transmission and reception device

210: GPS receiver 220: coordinate calculator

230: location information / vehicle information storage unit 240: comparison unit

300: display controller 310: display unit

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

1 is an internal block diagram of a wireless communication system mounted or mounted in a vehicle according to an embodiment of the present invention.

The system 1 according to the first embodiment of the present invention includes a system control unit 10, a system memory unit 20, and a key input unit 30.

The system controller 10 collectively controls the overall wireless communication system according to a control program embedded in the system memory unit 20. The system memory unit 20 may be implemented as a ROM or EEPROM.

The key input unit 30 includes a plurality of keypads for selecting various operation modes of the system or for inputting vehicle information such as a vehicle identification number or a car type. Here, the vehicle information such as the vehicle identification number may be stored in the system memory unit 20 that can be read and recorded or recorded in a separate storage location. In particular, the vehicle identification number may be used by inputting a four-digit vehicle number. In addition, it may be used differently depending on the country, or converted to a number when the vehicle number is an alphabet.

In the present embodiment, a key press unit of a button press method is employed, but in a more preferred embodiment, the voice recognition module may be further adopted instead of the key input unit to register and dial a vehicle identification number by voice.

In addition, the system 1 includes a microphone (MIC), a compressor 110, a voice modulator / demodulator 120, an expander 130, a volume controller 140, a speaker (SPK), a wireless device for transmitting and receiving voice. Transmitting and receiving device 150 and transmitting and receiving antenna 160.

The voice modulator 120, the compressor 110, and the expander 130 are controlled by the system controller 10.

The microphone MIC and the speaker SPK may be manufactured in the form of a handset or a headset, an earset, or a baseset attached to a part of a vehicle body.

The operation of the first embodiment configured as described above is as follows.

First, in a vehicle identification number registration mode, when a vehicle identification number (for example, a vehicle number four digits) is input through the key input unit 30 of the vehicle wireless communication system, the system control unit 10 stores the vehicle identification number in a system memory ( 20) (or other memory). This vehicle identification number can be changed if necessary. By dialing using the registered vehicle identification number, a call is made between driving drivers.

For example, when the driver of the following vehicle wants to talk to the preceding vehicle, the following vehicle driver visually identifies the vehicle number of the preceding vehicle and presses the vehicle number four digits through the key input unit 30, and the system control unit 10 A key data signal for dialing by recognizing the vehicle number is generated. The dialing key data signal is transmitted through the data transmission / demodulation unit 100 through the wireless transceiver 150 and the antenna 160 to establish a communication path with the preceding vehicle.

In the transmission mode, when the driver of the transmitting side inputs a voice signal through a microphone (MIC) through the established communication path, it is compressed by the data compressor 110 operating under the control of the system control unit 10 and the voice demodulation unit ( After the FM modulation and noise suppression through the 120, the RF is modulated via the radio transceiver 150 and then transmitted to the receiver through the antenna 160.

In the reception mode, the signal received through the antenna 160 is RF demodulated via the radio transceiver 150 and then is input to the voice modulation and demodulation unit 120 under the control of the system controller 10. Is suppressed and then FM demodulated, and data is extended through the data expander 130 to restore the original signal. In addition, the output of the data expander 130 is controlled by the volume control unit 140 and is transmitted to the driver through the speaker (SPK).

Here, the transmission and reception power and the distance of the vehicle wireless communication system of the present invention is within a radius of 100M (about visible distance), it is designed to make a call without a separate repeater.

The system 1 according to the second exemplary embodiment of the present invention displays vehicle information or a location of vehicles within a transmission / reception radius in conjunction with a GPS device on a screen to enable a more convenient call.

The GPS (Global Positioning System) is a positioning system using satellites covering all regions of the earth, and is a system for measuring the position of all moving objects on the earth by calculating the distance and the distance variable speed using GPS satellites. A GPS user finds his exact three-dimensional position by measuring the distance by receiving signals from these satellites with the satellite group forming a constellation in the orbit of about 20,000km over the floor (or base).

In a second embodiment system 1 according to the present invention incorporating GPS equipment, a reception antenna 200, a GPS receiver 210, a coordinate calculation unit 220, a location information / vehicle, indicated by a dotted block in FIG. The information storage unit 230, a comparison unit 240, a display controller 300, and a display unit 310 are included.

Of course, in the second implementation system 1, as described above in the first implementation system, the system control unit 10, the system memory unit 20, the key input unit 30, the data modulation / demodulation unit 100, and the voice modulation / demodulation unit are provided. Corresponding component having the necessary functions, including the unit 120, wireless transmission and reception unit 150 and the like is provided. This will be easily understood by those skilled in the art through the foregoing description, and thus will not be repeated hereunder.

Referring to FIG. 1, the GPS receiver 210 converts a satellite RF signal received through an antenna into an IF signal and converts the IF signal into a baseband digital signal.

The coordinate calculator 220 receives the converted digital signal of the GPS receiver 120 and calculates its vehicle position coordinates according to a predetermined processing program.

The location information / vehicle information storage unit 230 includes a vehicle identification number storage area, a corresponding location information and vehicle information storage area, and is provided with its own vehicle identification number and GPS receiver 210 registered for each storage area. It stores its own vehicle location information, and stores any vehicle identification number and vehicle location information received via the antenna 160.

The comparison unit 240 receives the vehicle identification number and the vehicle position information from the position information / vehicle information storage unit 230, and displays other vehicle position information based on the vehicle position information of the vehicle in order to preferentially display the adjacent vehicle. The vehicle identification numbers to be displayed are determined by comparing them with each other.

The display controller 300 displays the vehicle identification number and the vehicle position information output from the position information / vehicle information storage unit 230 or the comparison unit 240 on the display unit 310 under the control of the system controller 10. To control.

The operation of the second embodiment configured as described above is as follows.

Since the operations of the vehicle number registration mode, the dialing mode, the transmission mode, and the reception mode described above in the first embodiment are performed in the same or similar manner in the second embodiment, the description thereof will be omitted.

In the standby mode, the system controller 10 inquires of its current location to the GPS satellite center, or receives a signal transmitted from the GPS satellite center automatically through the GPS receiver 210 when a predetermined time or a predetermined distance elapses, and calculates coordinates. The control unit 220 calculates the current position, and stores the coordinate value together with the vehicle information including its vehicle identification number in the allocation area of the position information / vehicle information storage unit 230.

In addition, the system controller 10 reads the vehicle information and the current position information including its vehicle identification number stored in the position information / vehicle information storage unit 230 and provides the data to the data modulation / demodulation demodulator 100 to perform wireless data modulation. When the predetermined time or a predetermined distance elapses through the transceiver 150 and the antenna 160, the apparatus transmits the signal.

In addition, vehicle information and location information, which are frequently transmitted from an arbitrary vehicle wireless communication system, are temporarily recorded in the location information / vehicle information storage unit of the system, and the system controller 10 is received through the wireless transmission / reception device 150. The data signal of the demodulated signal is demodulated through the data demodulator 100, and the other vehicle information and the location information signal of the demodulated data are temporarily stored in the corresponding area of the location information / vehicle information storage unit 230.

Now, when the driver wants to communicate with a vehicle that is driving nearby, the driver checks the vehicle identification number displayed on the display screen and starts a call.

In the display mode, the system controller 10 reads the vehicle identification number and the position information from the position information / vehicle information storage unit 230 and provides it to the comparison unit 240. The comparison unit 240 compares other vehicle location information based on its vehicle location information to determine which direction and location it is located around, and determines the vehicle identification number to be displayed according to the determination result. do.

Then, the system controller 10 controls the display unit 310 to display the determination result data of the comparator 240 through the display controller 300.

The display unit 310 may be implemented as a liquid crystal display. The display controller 300 simply displays the vehicle identification number of the front and rear left and right vehicles on the display 310 under the control of the system controller 10, or tracks the vehicle position and the vehicle identification number as a video while tracking the vehicle according to the traveling speed of the vehicle. Can be controlled to display simultaneously. In addition, the system controller 10 may control the display controller 300 to preferentially display the nearest vehicle according to the determination result of the comparison unit 240.

By employing GPS and display equipment, the proximity vehicle location and vehicle identification number can be conveniently checked, called, and answered on the screen.

For example, in the transmission mode, the driver may start a call by selecting and calling a desired vehicle identification number by checking the display screen. In addition, a call may be initiated by directly selecting a vehicle image displayed on a moving image screen such as a touch screen.

In the reception mode, a vehicle identification number or an image indicating a vehicle location to which a call is to be displayed may be provided with information about the other party. In this case, if the reception side does not want a call by adding a reception rejection function, the call may not be started.

As described above, the present invention provides a wireless communication path by dialing a corresponding vehicle identification number (vehicle number) without a special repeater when talking to a nearby vehicle driver, and in particular, in connection with the GPS equipment, By displaying the vehicle identification number, there is an effect of providing a more convenient call and call function with the other party.

Claims (16)

And a wireless transmission / reception means for transmitting a vehicle identification number to be called using a common frequency band for short-range communication to enable a call between vehicles. The inter-vehicle wireless communication system according to claim 1, wherein the vehicle identification number is a vehicle number engraved on a vehicle license plate. The method of claim 1, A system memory unit having a system-wide control program; A system controller which collectively controls the overall wireless communication system according to a control program of the system memory unit; An input unit for selecting various operation modes of the system or inputting vehicle information such as a vehicle identification number or a vehicle type, And a reading and writing memory for storing vehicle information including the vehicle identification number. The method of claim 1, wherein the wireless transmission and reception means, Transmission means for compressing the voice signal input through the microphone through a data compressor operating under the control of the system control unit and FM modulation through the voice modulation and demodulation unit to suppress noise and then modulate the RF signal to transmit to the antenna; Receiving means for RF demodulation of the signal received through the antenna, the noise signal is suppressed through the voice modulation and demodulation unit under the control of the system control unit, and then FM demodulation, and the data is extended through the data expander to restore the original signal and output it through the speaker. Inter-vehicle wireless communication system comprising a. 4. The inter-vehicle vehicle according to claim 3, wherein the input unit comprises a plurality of function keys for selecting an operation mode and a plurality of numeric keys for inputting and dialing vehicle information such as a vehicle identification number or a car type. Wireless communication system. The voice recognition apparatus of claim 3, wherein the input unit recognizes a function selection word for selecting an operation mode and the like, and recognizes a plurality of digits for inputting and dialing vehicle information such as a vehicle identification number and a car type. An inter-vehicle wireless communication system, characterized in that the module. 5. The inter-vehicle wireless communication system according to claim 4, wherein the microphone and the speaker of the wireless transmission / reception means are in the form of a hand preset. 2. The inter-vehicle wireless communication system according to claim 1, wherein the wireless transmission / reception means covers a predetermined distance within a predetermined radius in which a call can be made to other wireless transmission / reception means without passing through a separate repeater. Receives vehicle information and / or location information including vehicle identification numbers from other vehicles in close proximity using a common frequency band for short-range communication, temporarily stores it, compares it with its own vehicle location information, and compares it with another vehicle at a predetermined position on the screen. And wireless transmission and reception means for displaying vehicle information and / or location information of the vehicle and transmitting the displayed vehicle identification number to enable communication between vehicles. The method of claim 9, A system memory unit having a system-wide control program; A system controller which collectively controls the overall wireless communication system according to a control program of the system memory unit; An input unit for selecting various operation modes of the system or inputting vehicle information such as a vehicle identification number or a vehicle type, GPS means for locating one's three-dimensional vehicle by measuring the distance by receiving signals from satellites, Means for processing and displaying vehicle information including vehicle position information and vehicle identification number periodically acquired from the GPS means and vehicle position information and / or vehicle information of other vehicles received under the control of the system controller; And wireless transmission / reception means for transmitting and receiving a voice signal by calling a vehicle identification number confirmed through the display means while transmitting vehicle information including its own location information and its vehicle identification number periodically under the control of the system controller. Inter-vehicle wireless communication system, characterized in that. 10. The method of claim 9, wherein the GPS means A GPS receiver converting the satellite RF signal received through the first antenna into an IF signal and converting the IF signal into a baseband digital signal; And a coordinate calculation unit configured to receive the converted digital signal of the GPS receiver under the control of the system control unit and calculate its own vehicle position coordinates according to a predetermined processing program. The method of claim 9, A location information storing vehicle information and vehicle location information storage area, storing own vehicle identification number and vehicle location information under the control of the system control unit, and storing another vehicle identification number and vehicle location information for each corresponding area; Vehicle information storage unit, Under the control of the system control unit receives the vehicle identification number and the vehicle location information from the location information / vehicle information storage unit, and compares the other vehicle location information on the basis of the predetermined vehicle location information based on the vehicle to display The inter-vehicle wireless communication system further comprises a comparison unit for determining and outputting. The method of claim 12, wherein the display means A display unit, And a display controller controlling to display the vehicle identification number and / or the vehicle position information output from the comparison unit or the position information / vehicle information storage unit under the control of the system controller. Inter-vehicle wireless communication system. The inter-vehicle wireless communication system of claim 13, wherein the display unit is a liquid crystal display device. The inter-vehicle wireless communication system of claim 13, wherein the display unit is a touch screen. The method of claim 9, wherein the wireless transmission and reception means, A voice transmission means for compressing a voice signal input through a microphone through a data compressor operating under the control of the system controller, and FM modulation through a voice modulator to suppress noise and then modulate the RF signal and transmit the RF signal to a second antenna; RF demodulation of the signal received through the second antenna, the noise signal is suppressed through the voice modulation and demodulation unit under the control of the system control unit, and then FM demodulation, and the data is extended through the data expander to restore the original signal and output through the speaker. Voice receiving means, And a data transmitting / receiving means for RF demodulating and transmitting / receiving a signal transmitted and received through a second antenna, and demodulating and demodulating an IF demodulation and a baseband digital signal under the control of the system controller.