JPH07334795A - Travel position display device - Google Patents

Abstract

PURPOSE:To accurately call the attention of a driver who nearly acted against a regulation by mistake and improve the safety by generating an alarm when it is judged that the driver's own vehicle neglects traffic regulation information present on the road where the vehicle is traveling. CONSTITUTION:A CPU 10 has a function which judges whether or not the driver's own vehicle is neglecting a traffic regulations by collating the traffic regulation information read out of a CD-ROM 7 with current position data on the vehicle. And also, an annunciator 20 which operates when the CPU 10 judges that the vehicle is neglecting the traffic regulations is connected to the CPU 10 through a communication interface 18. The outputs of a direction sensor 2 and a distance sensor 2 and sent to the CPU 10 through a sensor signal processing part 4 and the CPU 10 reads the traffic regulation information corresponding to the detected vehicle position out of the CD-ROM 7 according to the signal, collates the traffic regulation information with the vehicle position to decides whether or not the vehicle neglects the traffic regulations, and places the annunciator 20 in operation when judging the traffic regulation violation to warn the driver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling position display device (navigation device) having a display means for displaying the current position of an automobile or the like together with a map or a highway deformation map.
Regarding

[0002]

2. Description of the Related Art FIG. 3 is a schematic block diagram of a conventional vehicle-mounted traveling position device.

In FIG. 3, reference numeral 1 denotes an azimuth sensor. The azimuth sensor 1 detects a geomagnetic sensor for detecting an absolute traveling azimuth of an automobile, a geomagnetic sensor for detecting a relative traveling azimuth of an automobile, and a relative azimuth of an automobile. An optical gyro is used. Reference numeral 2 is a distance sensor that generates a pulse according to the number of rotations of the wheel, and 3 is various sensor signals such as an ON / OFF signal of a brake switch and a parking switch and a power supply voltage monitoring signal. Reference numeral 4 denotes a sensor signal processing unit that processes sensor signals from the azimuth sensor 1 and the distance sensor 2 and the like.
Is GPS (Global Positioning S)
The GPS receiver 5 obtains the position (latitude, longitude) of the reception point by receiving and calculating radio waves transmitted from a plurality of satellites.

Reference numeral 6 denotes a CD-ROM drive, which is C
The D-ROM drive 6 reads the map data from the CD-ROM 7 in which the map data, the expressway route information and the like are recorded. Reference numeral 8 denotes a display / operation unit installed in the vehicle compartment. The display / operation unit 8 is a liquid crystal display 8 for displaying a map and the current traveling position, direction, etc. of the automobile.
A, a touch panel 8B provided on the front surface of the liquid crystal display 8A. The touch panel 8B is a switch for instructing enlargement or reduction of the displayed map, a switch for instructing a route search, and a place name displayed on the liquid crystal display 6A. It is equipped with a switch for selecting a destination from, a switch for displaying a highway deformation map, and so on. Reference numeral 9 denotes an apparatus main body, and the apparatus main body 9 is installed in a trunk room or the like.

Next, the structure of the apparatus body 9 will be described.
Reference numeral 10 denotes a CPU (central processing unit) for performing various calculations, 11
Is an R storing various calculation programs executed by the CPU 10.
OM (Read Only Memory), 12 is the orientation sensor 1,
Distance sensor 2, GPS receiver 5 and CD-ROM 6
A memory (DRAM) for storing data from the above, a calculation result in the CPU 10 and the like, and a backup memory (SRAM) 13 for holding necessary data even when the power supply to the apparatus main body 9 is stopped. , 14 is a memory (kanji, font ROM) in which patterns such as characters and symbols to be displayed on the liquid crystal display 8A are stored, and 15 is an image for forming a display image based on map data or current position data of the vehicle. Processor, 16 is an image processor 15
A memory (VRAM) 17 for storing map data output from the computer, current position data and kanji, kanji such as town names and road names output from the font ROM 14, and an image to be displayed on the liquid crystal display 8A by combining fonts, 17 V
RG for converting the output data of the RAM 16 into color signals
This is a B conversion circuit, and the converted color signal is output from the RGB conversion circuit 17 to the liquid crystal display 8A. Reference numeral 18 is a communication interface.

In FIG. 3, the output of the azimuth sensor 1 and the output of the distance sensor 2 are sent to the CPU 10 via the sensor processing unit 4.
Sent to. The CPU 10 calculates the current position of the vehicle and obtains the latitude and longitude of the current position. Also, the current position of the vehicle is corrected based on the data from the GPS receiver 5.

Based on the present position thus obtained, the map data of the unit corresponding to the present position is CD-R.
The map data is read from the CD-ROM 7 by the OM drive 6, and the map data is stored in the memory (DRAM) 12 via the communication interface 18. DRAM 12
A part of the map data stored in is read by the CPU 10, converted into image data by the image processor 15 and written in the image memory 16. The image data stored in the image memory 16 is converted into a color signal by the RGB conversion circuit 17 and sent to the liquid crystal display 8A, and a map of a predetermined range centering on the current position is displayed.

If the map data read from the DRAM 12 includes character codes and symbol codes, the patterns corresponding to these character codes and symbol codes are read from the Kanji and font ROM 14 and displayed on the liquid crystal display 8A. Characters such as place names and symbols such as schools are displayed along with the map. Further, the current position displayed on the liquid crystal display 8A is sequentially changed based on the traveling speed and the traveling azimuth which are sequentially obtained as the automobile travels.

FIG. 4 shows a display example of the liquid crystal display 8A. On this liquid crystal display 8A, a vehicle mark 19 showing the traveling position of the vehicle is displayed together with a map.

[0010]

However, in the conventional traveling position display device, the traffic regulation information cannot be displayed on the map displayed on the liquid crystal display 8A to call the driver's attention. Even if it can be displayed, the screen is difficult to see, so there is a problem that the driver cannot be accurately notified of the traffic regulation information and the traffic regulation is erroneously ignored.

The present invention solves such a conventional problem, and a traveling position where a driver who is about to violate traffic regulations by mistake can be informed of the fact accurately to call attention. An object is to provide a display device.

[0012]

In order to achieve the above object, the present invention provides a vehicle position detecting means for detecting the vehicle position, a node representing a coordinate point, and a set of links connecting the nodes. Read out from the first map data storage means, the second map data storage means storing highway route information corresponding to the road information, and the first map data storage means Display means for displaying the map and the own vehicle position detected by the own vehicle position detecting means in association with each other, traffic regulation information read from the second map data storage means, and the own vehicle position detecting means. And a notification unit that operates when the determination unit determines that the vehicle is in violation of traffic regulation by associating with the vehicle position detected in 1. .

[0013]

Therefore, in the present invention, when the determination means determines that the position of the vehicle is erroneously entered into the traffic regulation area, the notification means operates in response to the determination command to issue a warning. Alert drivers who are about to violate regulations.

[0014]

EXAMPLES An example of the present invention will be described below.

FIG. 1 is a block diagram showing a schematic configuration of a traveling position display device according to the present invention.

In FIG. 1, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description of the structure will be omitted.

That is, the difference between the present embodiment and the prior art is that the CPU 10 associates the traffic regulation information read from the CD-ROM 7 with the current position data of the vehicle to determine whether the vehicle is in violation of the traffic rules. The communication interface 18 includes a notification device 20 that operates when the CPU 10 determines that the vehicle is in violation of traffic rules.
It is connected to the CPU 10 via.

Next, the operation of this embodiment will be described with reference to FIGS. FIG. 2 is a flow chart for explaining a processing procedure for detecting a traffic regulation violation in this embodiment. In Figure 2, when the program starts,
First, in step S1, a map scale is selected. A map and map display level corresponding to the selected scale is selected, a unit corresponding to the vehicle position is selected, and map display data is read from the CD-ROM 7 to the CPU 10. (Step S2).

In the next step S3, the road network data recorded on the CD-ROM 7 (corresponding to FIG. 4).
Is read by the CPU 10. Based on the read road network data and the current position data of the own vehicle obtained by the CPU 10, the own vehicle position on the road set work and the traveling road are detected (step S4). Next, it is determined whether there is traffic regulation data on the road on which the vehicle is traveling, by using the highway route information corresponding to the vehicle traveling road on the CD-
It is read from the ROM 7 and judged (step S5).

If there is traffic regulation data, the process proceeds to step S6, and it is determined whether or not the position of the vehicle currently traveling violates the traffic regulation. When it is determined that the vehicle is in violation, the process proceeds to step S7, the map data read from the CD-ROM 7 is displayed on the liquid crystal display 8A as shown in FIG. 4, and the vehicle mark 19 indicating the vehicle position is displayed. It is displayed on the liquid crystal display 8A as shown in FIG. 4 (step S8). Then, the next step S9
At, the warning device 20 is driven by a command from the CPU 10, and the driver is warned by voice or beep sound.

On the other hand, when it is determined in step S5 that there is no traffic regulation data, and in step S5.
When it is determined that the traveling of the own vehicle does not violate the traffic regulation in 6, the process proceeds to step S10, the map is displayed on the liquid crystal display 8A as shown in FIG. 4, and the own vehicle mark 19 is displayed on the displayed map. indicate.

As described above, in the present embodiment, when it is determined that the traveling vehicle violates the traffic regulation, a warning is issued by a voice or a beep, so that the traffic regulation may be erroneously violated. It is possible to accurately call attention to the driver who has become a driver and improve the safety of the vehicle on a highway or the like.

[0023]

As is apparent from the above embodiment, the present invention has traffic regulation information on the road on which the vehicle is currently traveling, and the traveling vehicle violates the traffic regulation. When it is determined that the warning means is activated and a warning is issued, it is possible to accurately warn the driver who is about to accidentally violate the traffic regulation and increase the safety of the vehicle. .

[Brief description of drawings]

FIG. 1 is a block diagram of a traveling position display device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing procedure of detecting a traffic regulation violation in the embodiment.

FIG. 3 is a block diagram of a conventional traveling position display device.

FIG. 4 is a display diagram showing a display example of a liquid crystal display.

[Explanation of symbols]

 1 Direction Sensor 2 Distance Sensor 3 Sensor Signal 4 Sensor Signal Processing Unit 5 GPS Receiver 6 CD-ROM Driver 7 CD-ROM 8 Display / Operation Unit 8A Liquid Crystal Display 8B Touch Panel 9 Device Main Body 10 CPU 11 Program ROM 12 D-RAM 13 S -RAM 14 memory 15 image processor 16 V-RAM 17 RGB conversion circuit 18 communication interface 19 own vehicle mark 20 alarm

Claims (1)

[Claims] 1. A vehicle position detection means for detecting a vehicle position, a node representing a coordinate point, a first map data storage means describing road information as a set of links connecting the nodes, and Second map data storage means that stores highway route information corresponding to road information, a map read from the first map data storage means, and the vehicle position detected by the vehicle position detection means. And the traffic control information read from the second map data storage means and the vehicle position detected by the vehicle position detection means in association with each other. A traveling position display device comprising: a determination unit that determines whether the vehicle is in violation of regulations; and a notification unit that operates when the determination unit determines that the vehicle is in violation of traffic regulations.