JPH055158B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle mutual communication device used for exchanging position information between a plurality of vehicles.

(Prior art) A system that displays the driving route of the vehicle on a cathode ray tube while the vehicle is in motion
This is already known as described in Japanese Patent No. 57-196318.
However, this known example merely displays information about the own vehicle, and its range of use is limited. For example, when multiple vehicles are traveling in a group, it would be very convenient to know not only the driving information of one's own vehicle but also the driving information of other vehicles.
The above-mentioned known examples cannot support such communication between vehicles.

(Object of the invention) The present invention has been made in view of the above points, and
The purpose of this is to display the mutual positions of vehicles on a display device such as a CRT, and also to transmit turn signal information to the radio waves transmitted by each vehicle in conjunction with the operation of the turn signal of the own vehicle to notify of a change of course. The purpose is to display the position and direction indicator information of each vehicle by folding the information into the transmission.

(Structure of the Invention) As shown in the configuration diagram of FIG. 2, the vehicle mutual communication device of the present invention includes a receiving device 9 that receives location information, etc. of another vehicle as a radio wave signal, and a receiving device 9 that receives location information, etc. of the own vehicle. A transmitting device 14 that transmits as a radio wave signal, a current position determining device 18 that calculates and determines the current position of the own vehicle based on signals from various sensors, a display device 5 that displays these various types of information, and the current position determining device. a vehicle position display control unit 20 that receives a signal and issues a vehicle position display signal; and a signal demodulation means 1 that receives radio waves from the receiver and demodulates the radio signals.
0, another vehicle position display control unit 19 which receives the signal from the signal demodulation means and issues another vehicle position display signal, and receives the signals from the own vehicle position display control unit and the other vehicle position display control unit and receives the signals together with the map. a display driver 21 that displays the position of the vehicle on the display device; a turn signal input means 6 that inputs turn signal information that notifies the driver of a change in the course of the vehicle in conjunction with the turn signal; and a display driver 21 that displays the vehicle position. The signal modulation means 13 receives the output signals from the control unit and the direction indicator signal input means, modulates each signal into a radio wave signal, and outputs the signal to the transmitting device, and transmits the position and direction indicator information of each vehicle. It is characterized by being configured so that it can be displayed.

(Embodiment) Hereinafter, a vehicle intercommunication device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a general block diagram of the intercommunication device.

This mutual communication device includes a receiving device 9 that receives a radio signal from another vehicle via a receiving antenna 8, and a received data demodulating device that functions as a signal demodulating means for demodulating the radio signal from the receiving device 9 into a received data signal. 10 and a reception data buffer 11 that temporarily stores the reception data signal from the reception data demodulation device 10, and various transmission data signals output from the control device 7, which will be described later, such as the current position of the own vehicle and A transmission data buffer 12 that temporarily stores direction indicator information (right turn or left turn), a transmission data modulation device 13 that acts as a signal modulation means for modulating a transmission data signal from the transmission data buffer 12 into a radio wave signal, and the transmission data modulation device. A transmitting unit 2 includes a transmitting device 14 that transmits a radio signal output from the device 13 via a transmitting antenna 15, a direction sensor 16 that detects the traveling direction of the own vehicle, and a distance sensor 17 that detects the traveling distance of the own vehicle. and a current position detection unit 3 consisting of a current position calculation device 18 that calculates the current position of the own vehicle based on signals from both sensors 16 and 17 and acts as a current position determination device, and a storage device 4 that stores map data etc. , a display device 5 such as a CRT, and a turn signal input means 6 for inputting turn signal information for informing the vehicle of a change in course (right turn or left turn), and signals from each of these devices are input. ,
It is constituted by a control device 7 that performs calculations as necessary and outputs the calculation results.
It consists of the turn signal input means 6, an input device 22 consisting of switches 22a and 22b that operate in conjunction with the operation of the turn signal, and a signal generator 23 that outputs the turn signal.

This control device 7 selects trajectory data on the display memory of the own vehicle and other vehicles and map data corresponding thereto based on the output signals of the receiving section 1 and the current position detecting section 3 using a pre-stored program. It performs arithmetic processing according to the data and outputs it to the display device 5, and also outputs the current position of the own vehicle and the direction indicator information as transmission data to the transmitting section 2 when the direction indicator is activated. The other vehicle position display control section 19 receives the data signal and issues the other vehicle position display signal; the own vehicle position display control section 20 receives the signal from the current position detection section 3 and issues the own vehicle position display signal; It has a display driver 21 that receives signals from the vehicle position display control section 20 and the other vehicle position display control section 19 and causes the display device 5 to display respective positions and direction indicator information along with a pre-stored map. .

The orientation sensor 16 is a geomagnetic sensor that detects the direction in which the vehicle is traveling with respect to magnetic north, and the distance sensor 17 is a geomagnetic sensor that generates a pulse for each unit distance traveled. A device is used that calculates the signal and detects the cumulative travel distance from a certain position determined each time.

Next, the operation of the vehicle intercommunication device of the present invention will be explained with reference to the flowcharts shown in FIGS. 3 to 6. Note that P ₁ to _{P 19} in the figure indicate each step of the flowchart.

While the car is running, the current position of the own car is calculated by the current position calculation position 18 based on the signals from the direction sensor 16 and the distance sensor 17, the calculation result is read out (P ₁ ), and the current position of the own car is transmitted. At the same time as writing to the data buffer 12 (P ₂ ),
When the direction indicator is activated and the right turn or left turn switch 22a or 22b of the input device 22 is turned on, this information is read from the signal generator 23 (P ₃ ),
The identification code of the own vehicle is written into the transmission data buffer 12 (P ₄ ). Here, the transmission data written in the transmission data buffer 12 is data in which position data and direction indicator information are combined. As shown in FIG. 5, it is determined whether or not there is a change in the contents of the transmission data buffer 12 ( _P13 ), and if there is a change in the contents, the transmission data is modulated into a radio wave signal by the transmission data modulation device 13 (P13). P ₁₄ ) and then transmitted from the transmitter 14 (P ₁₅ ). On the other hand, as shown in FIG. 6, when a radio wave signal is input to the receiving device 9 (P ₁₆ ), the received radio wave is sent to the received data demodulator 10 to receive the received data (position data and direction indicator information of another vehicle). After demodulating the received data (P ₁₈ ), the received data is written into the received data buffer 11 (P ₁₉ ).

The contents of the received data buffer 11 are read out (P ₅ ) and stored in the storage device 4 (P ₆ ). Next, as shown in Fig. 4, it is determined whether the vehicle's position is within the map displayed on the display device 4 ( _P8 ), and if it is within the local map, the map display is left unchanged and the current position is changed. If it is not within the map, the direction in which the own vehicle protrudes is detected (P ₉ ), and a new map in the protruding direction is read out from the storage device 4 and displayed. When the map selection is completed in this way, the location information and the direction indicator information corresponding to the location information are read out from the storage device 4 (P ₁₁ ), and the current locations X1, X2 of the own vehicle and the destination vehicle are determined as shown in FIG. and direction indicator information S
is displayed on the display device 5 together with the map.

Therefore, turn signal information can be exchanged between each vehicle while driving, the behavior of the preceding event (right turn or left turn) can be clearly known, and it is possible to prevent the following vehicle from falling off.

(Effects of the Invention) As described above, according to the present invention, it is possible to perform transmission and reception between vehicles, display each other's positions on the display device of each vehicle, and also change the direction of the radio waves transmitted by each vehicle. In conjunction with the operation of the indicator, the turn signal information that notifies you of a change of direction is included and can be displayed on the display device of another vehicle. Indicator information can also be exchanged, and the driving behavior of the preceding vehicle can be clearly known. Therefore, there is an excellent effect that the following vehicle can follow the preceding vehicle without getting lost.

[Brief explanation of the drawing]

FIG. 1 is an overall block diagram of a vehicle mutual communication device according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the present invention, and FIG. 3 is a control in a vehicle mutual communication device according to an embodiment of the present invention. Flowchart explaining the operation of the device; FIG. 4 is a flowchart of the map selection subroutine in the flowchart of FIG. 3; FIG. 5 is a flowchart of the transmitter; FIG. 6 is a flowchart of the receiver; FIG. is a display example of the present invention. 5...Display device, 6...Direction indicator signal input means, 9...Receiving device, 10...Signal demodulation means, 1
3... Signal modulation means, 14... Transmitting device, 18...
...Current position determination device, 19...Other vehicle position display control unit, 20... Own vehicle position display control unit, 21...Display driver.

Claims (1)

[Claims] 1. A receiving device that receives location information of other vehicles as a radio signal, a transmitting device that transmits location information of the own vehicle as a radio signal, and a current position that calculates and determines the current location of the own vehicle based on signals from various sensors. a determination device, a display device that displays these various pieces of information, a vehicle position display control unit that receives a signal from the current position determination device and issues a vehicle position display signal, and a vehicle position display control unit that receives radio waves from the reception device and outputs the vehicle position display signal. a signal demodulating means for demodulating a radio wave signal; an other vehicle position display control section that receives a signal from the signal demodulation means and issues an other vehicle position display signal; and signals from the own vehicle position display control section and the other vehicle position display control section. a display driver for displaying each location along with a map on the display device based on the received information; a turn signal input means for inputting turn signal information that should notify the user of a change in the course of the vehicle in conjunction with the turn signal; a vehicle position display control unit and signal modulation means for receiving the output signals of the direction indicator signal input means, modulating each signal into a radio wave signal, and outputting the signal to the transmitting device. Communication device.