JPS6394400A - Map information communication system for automobile - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an information communication system for automobiles, and particularly relates to a map information communication system for automobiles that informs the driver of a surrounding map while driving and the location of a desired point by the driver. .

[Conventional technology]

Traditionally, when traveling by car to an unfamiliar place, the driver
I bought a map of the place and used it to confirm my destination.

[Problem that the invention seeks to solve]

An object of the present invention is to provide a communication system that allows a driver onboard a vehicle to obtain map information from an information transmitting/receiving unit installed on the ground.

[Means for solving problems]

In the present invention, as shown in FIG. 1, a ground transceiver section 1, a map information file 7, and a ground control section 6 are installed on the ground, and an on-vehicle transceiver section 2 is mounted on a vehicle.
A communication system is provided that includes a calculation section 3, an information output section 4, and a driver input section 5.

[Effect]

The map information file 7 stores surrounding map information.

The ground transmitter/receiver 1 performs transmission and reception with the on-vehicle transmitter/receiver 2, and the ground controller 2 receives an information request signal from the vehicle through the ground transmitter/receiver 1, and refers to the map information file 7. Then, a map information signal is transmitted to the vehicle through the ground transmitter/receiver 1.

The driver requests necessary information from the driver input section 5.

The calculation unit 3 converts the signal received by the on-vehicle transmitting/receiving unit 2 into output data, and also converts the input data from the driver input unit 5 into an information request signal, and the information output unit 4 converts the output data into an information request signal. Output.

〔Example〕

FIG. 2 shows the configuration of an embodiment of an automobile map information communication system according to the present invention. On the ground, map information file 1
7. A ground control unit 16, a ground transmitting unit 11, and a ground antenna 10 are installed, and a switch unit 15, a calculation unit 13, an on-board transmitting/receiving unit 12, a display unit 14, and an on-board antenna 20 are installed on the vehicle. has been done.

Reference numeral 17 denotes a map information file for storing surrounding map information, and a magnetic disk, ROM, or other suitable storage means is used. Reference numeral 11 denotes a ground transmitting/receiving unit, which transmits and receives a group of signals to be described later from the ground antenna 10 using weak radio waves (for example, output of 0.046 μw). The ground control section 16 receives a signal indicating an information request from the driver, which will be described later, through the ground transceiver section 11, and transmits the map information to the ground transceiver section 1 while referring to the map information file 17.
1 to the driver and consists of a microprocessor. Reference numeral 12 denotes an on-vehicle transmitter/receiver section installed in the vehicle, which communicates with the above-mentioned ground transmitter/receiver section 11 via the on-vehicle antenna 20 using weak radio waves. Reference numeral 13 denotes an arithmetic unit consisting of a microcomputer, which replaces the signal group received by the on-vehicle transmitter/receiver with a data signal for display, and also transmits a signal group to be described later to the ground transmitter/receiver. Reference numeral 14 denotes a display section 14, such as a CRT display, for displaying the data signal obtained by the arithmetic section 13.

Further, 15 is a switch section for the driver to select the content displayed on the display section 14, and the switch section 15
The output signal is input to the calculation section 13. Further, as described above, communication between the ground transmitter/receiver 11 and the on-board transmitter/receiver 12 uses weak radio waves, for example, at a frequency of 77.
．． A group of signals is communicated at 5MHz using a modulation method using 5CFSK (subcarrier frequency shift keying).

FIG. 3 is a diagram showing an example of the switch section 5, in which transparent electrode plates 50 and 51 are arranged on the display section 4 with studs 52 interposed at minute intervals. The driver uses the transparent electrode plate 50
When pressed, the transparent electrode plate 50 bends and comes into contact with the transparent electrode plate 51, thereby detecting whether the switch is ON or FF. Further, the electrodes of the transparent electrode plates 50 and 51 are shown in FIG.
As shown in A), the electrodes x1...xm are arranged perpendicularly to each other, and the electrodes x1...
s...y are arranged on the transparent electric bridge plate 51. When the driver presses the points X=xn, y-yi on the transparent electrode plate 50, the electrodes at the points indicated by black circles in FIG. 4 come into contact.
By detecting the X and Y coordinates, the coordinates pressed by the driver can be detected.

The operation of one embodiment of the automotive map information communication system of the present invention having the above configuration will be described below.

Now, in FIG. 2, in a vehicle equipped with an on-board antenna 20, an on-board transceiver section 12, a calculation section 13, a display section 14, and a switch section 15, when the key switch is turned on at the start of driving, power is supplied from the on-board battery. In response to this, each part of the electrical system becomes operational. Then, the calculation unit 13 receives a stabilized power supply of 5V from the vehicle battery via the stabilized power supply circuit, becomes operational, and repeatedly executes the calculation of the main routine shown in FIG. 4. In FIG. 4, after the power is turned on, initialization such as clearing of the flash is performed at step 400. In step 401, the process waits until the switch for the screen display "map information" shown in FIG. 5 is turned on. When turned on, in step 402, a group of data request signals are output to the ground transceiver 11 via the on-vehicle transceiver 12 and on-vehicle antenna 20 shown in FIG. Assume that this signal group is, for example, a signal group r//MAAAOCRJ that includes the bus code of the vehicle in which the on-vehicle transmitter/receiver 12 is mounted. The above signal group is an ASCII code, "//" is the part indicating the header of the signal group, "M" is the map information request code, "AAA" is the bus code determined by the vehicle, "0" is Show the initial data. Also, “CR
" indicates the end of the signal group. After outputting the above-mentioned signal group, the on-board transceiver 12 and the on-board antenna 20 enter the receiving state. Then, in step 403, the signal is transmitted from the ground transceiver 11. Wait until it comes.

When the ground control unit 16 receives the above data request signal group through the ground transceiver unit 11, the ground control unit 16 transmits, for example, r##MA.
AAo IKinShoppingKout KinMealKou
t Kin Government Office Kout Kin Hospital Kout Ki
A signal of n parking lot Kout tKin and other Kout CRj is transmitted through the ground transceiver section 11 . “##”
is a signal indicating the beginning of a signal group, "M" indicates map information, "AAA" is the bus code of the vehicle "01" is the number of the data structure, "Kin" is the Kanji JIS code from then on until "Kout" Signals indicating that ``is being sent, shopping, etc.''
The portion indicated by Kanji characters separated by Kin"Kout" is data expressed in Kanji JIS code.

Further, "CR" indicates the end of a signal group. When the above-mentioned signal is transmitted from the ground transceiver section 11, the arithmetic section 13 proceeds to step 404 and outputs the display contents to the display section 14 described above. The state of the display is shown in FIG.

Next, in step 405, the selection switch section 15 is turned on.
For example, in FIG. 6, if "meal" is selected, the process proceeds to step 406, and since the switch is not "end", the process proceeds to step 402. In step 402, a signal group for requesting data is output to the ground transceiver section 11. This signal group is, for example, an ASCII code of r//MAAA O11CRJ.

When the ground control unit 16 receives the signal for requesting data, it transmits the data in the same manner as described above.

The calculation section 14 outputs the signal transmitted from the ground transceiver section 11 to the display section 14 using the same procedure as in steps 403 and 404 described above. FIG. 7 shows the display situation.

Next, if the driver selects "Japanese food" in FIG.
Output the data shown in the figure.

Note that during the above steps, the ground control unit 16 reads necessary information from the map information file 17 as necessary.

Furthermore, in FIG. 8, if the switch at the position where the words "End" are written is turned on, then step 406
Then, the process moves to step 401, and the screen of the display section 14 becomes as shown in FIG.

In this embodiment, the switch section is placed above the screen of the display section, but it may be placed at any position as long as it can select the content displayed on the display section.

Furthermore, in this embodiment, signals between the ground transceiver 11 and the on-vehicle transceiver 12 are transmitted using ASCII code.
A method using another predetermined code using weak radio waves may also be used.

Further, input from the driver or information output to the driver is performed using a CRT display and switches on the screen in the above embodiment, but other methods such as voice input or output may also be used. good.

〔Effect of the invention〕

According to the present invention, a driver can obtain the latest map information in places where the above-mentioned map information transmitting device is available on the ground, without having to purchase a map and check the destination and route as in the past.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the basic configuration of the automotive map information communication system according to the present invention, FIG. 2 is a diagram showing the configuration of an embodiment of the automotive map information communication system according to the present invention, and FIG. A) is a front view of the selection switch, FIG. 3(B) is a side view, FIG. 4 is a flowchart showing the operation of the calculation unit 14 in an embodiment of the present invention, and FIGS. 5 to 8 are implementations of the present invention. It is an example of the screen display content of the display part in an example. (Explanation of symbols) 1.11... Ground transmitting/receiving section, 2.12... Onboard transmitting/receiving section, 3.13... Calculating section, 4... Driver input section, 5... Information output unit, 6.16... Ground control unit, 7.17... Map information file, 10... Ground antenna, 14... ...
...Display section, 15...Switch section, 20...Onboard antenna, 50.51...
・Transparent electrode plate,

Claims (1)

[Claims] 1. A ground transmitting/receiving unit (1), a map information file (7), and a ground control unit (6) installed on the ground, and an on-vehicle transmitting/receiving unit (2) installed on a vehicle. ), an arithmetic unit (3), an information output unit (4), and a driver input unit (5), the map information file (7) stores surrounding map information, and the ground transceiver unit (1) is the on-board transmitter/receiver (2)
The ground control unit (2) receives an information request signal from the vehicle through the ground transceiver unit (1), and refers to the map information file (7).
A map information signal is transmitted to the vehicle through the on-board transmitting/receiving section (1), the driver input section (5) receives data input by the driver, and the calculating section (3) transmits the map information signal to the on-board transmitting/receiving section (2).
) is converted into output data, input data from the driver input section (5) is converted into an information request signal, and the information output section (4) outputs the output data. A map information communication system for automobiles. 2. The above-mentioned ground transceiver section (1) and on-board transceiver section (2)
2. The automobile map information communication system according to claim 1, wherein the signal emitted from the vehicle is a weak radio wave with an output of 0.046 μW or less.