JPS5821285A - Running guide apparatus for vehicle - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] The present invention is designed to issue an alarm when the current position of Kameoka, which is calculated based on the traveling direction and travel distance of the vehicle, approaches a pre-stored travel route turning point. The present invention relates to a vehicle travel guidance device.

Conventionally, as shown in FIG. 1, for example, as shown in FIG. 1, a person working on this type of vehicle travel guidance system sets and inputs positional data of a starting point and a destination point in a section to be traveled using an input unit 1 using a keyboard or the like. Then, for each unit distance detected by the travel distance system 2, the current location of the vehicle is calculated and displayed by the calculation device 4 based on the direction of travel of the vehicle relative to the reference direction 1, for example, magnetic north, detected by the direction sensor 3. On the road map of device 50, for example, as shown in FIG. 2, the starting point and destination point B, the calculated vehicle position C, and the travel trajectory 1 up to the current position are displayed.

Furthermore, the device shown in Fig. 1 is provided with a memory 6 that stores the travel history *m (see Fig. 2) when traveling between the destination point and the starting point. Or, when traveling again, the stored travel route E can be displayed by reading it out using the input unit 1.

If you use this kind of vehicle travel guidance device, you can see at a glance whether you are driving along the road @ on the map heading toward your destination, and you can definitely head to your destination without getting lost, even if you are on an unfamiliar road. This makes driving easier.

By the way, when the driving route stored in the memory 6 is displayed and the driver is heading towards the destination along the displayed route, for example, when the vehicle approaches a direction change point such as an intersection where the direction of travel of the vehicle changes, You can tell whether to turn right or left by looking at the display, but if you are concentrating on the driving maneuvers, you may miss the route display, causing 5 problems such as deviating from the planned driving route. Ta.

The present invention is based on the above-mentioned Kll! This system was developed based on the vehicle's travel guidance system, which displays and stores the travel route from the departure point to the destination point by detecting the vehicle's current position, which is calculated based on the vehicle's traveling direction and travel distance. In order to facilitate driving based on a once memorized driving route, a notification is provided when the distance from the current position of the vehicle to a direction change point on the driving route becomes less than a predetermined distance. It is.

Hereinafter, the present invention will be explained based on drawings.

FIG. 3 is a block diagram showing an embodiment of the present invention. First, to explain the configuration, numeral 10 is a human-powered unit for storing or reading out the starting point, destination point, traveling route, etc. using a keyboard or the like by the driver's operation f'flK, and numeral 12 is for detecting the distance traveled by the vehicle. 13 is a direction sensor that detects and outputs the traveling direction of the vehicle with respect to the reference direction (magnetic north) K using a magnetic compass, etc.; 14 is a direction sensor that detects the starting point (
#・9%) Vehicle traveling direction - Unit mileage gds
a calculation device which calculates the current position (a ey ) of the vehicle at each time by the calculation; 15 is a display device that displays the starting point, destination point, current position, travel trajectory to the current position, etc. using a liquid crystal panel cathode ray tube, etc.; Reference numeral 16 denotes a message board for storing current position data obtained when traveling between two predetermined points (starting point and destination point) based on a storage command from the input unit 10, and storing storage data of the traveling route. It is.

In addition to such a configuration, in the present invention, direction change position data (
an, yn), and using the current position data (sty) obtained when traveling on the e travel route,
The distance j to the direction change position is 1 = 57;
......(2), and the calculated distance is the predetermined value I.
・A means is provided to determine and output the following:
When t, j < j・, the output activates the alarm 18 that makes a buzzer, chime, audio output, etc. 5
I'm doing K.

FIG. 4 shows an embodiment of the means for detecting and outputting the approach to the direction change position provided in the arithmetic unit 14 of FIG. Direction change position data (JF**l*) (
am * 1m), ... -% (gn * yn) is stored in the travel route request. - Me peak ν20 is incremented every time the direction change position is passed, and the data of the next direction change position is read. an address counter 22 that specifies the memory address for the change in direction, a calculator 24 that performs the calculation of equation (2) and outputs the distance I to the direction change position, and a predetermined distance set by the setter 26! , and a comparator 28 that outputs when the calculated distance I falls below. still,
When the calculated distance I becomes zero or negative, the calculator 24 determines that the direction change position has been passed and increments the address counter 22.

Next, the operation of the above embodiment will be explained with reference to FIG.

When traveling along a booth that is the same as the travel route stored in the memory 16, the data in the memory 16 is input to the arithmetic unit 14 in response to a read command by operating the input unit 10.
The driving route is displayed on the display 15, and data (g+I) indicating the turning position is stored in the memory 20 shown in FIG.
yn) to (am, yn) are written.

The distinction between the data indicating the direction change position and other data is, for example, when storing the data in the memory 16, switch information such as a steering operation detection switch or a direction indicator operation switch is stored together with the position data I. Things to do! ,
You can easily search and send mail orders with 2 OKs. Of course, when storing data in the memory 16, the memory 2o
You may also write to k.

Now, let's assume that data 1 at the direction change position is shown in Figure 5.
(#* * 7+), data on the direction change position (s**y*) is sent to the calculator 24 from 2 degrees above the peak.
is output, and the distance @l to the direction change position is sequentially output by calculating the above-mentioned equation (2) using the current position data (#.y) calculated for each unit traveling distance.

Therefore, as shown in Fig. 5(b) K, when the vehicle approaches the set distance j, the comparator 28 generates an H level output, activates the alarm 1111g (see Fig. 3), and changes direction fK. Informing the driver that the vehicle is approaching - Therefore, the driver can check the display 15 to confirm that the vehicle is turning right. 'Next, when the direction change position is reached as shown in FIG.
At this time, the operation II) 24 increments the address counter 22 and calculates the next direction change position C town +'/*)1
The distance I calculated by the calculator 24 by specifying the memory address of is the distance to the next direction change position C (5@), and since i>iΦ, the output of the comparator 28 is L.
level and the alarm is stopped.

FIG. 6 shows another embodiment of the means for detecting approach to the direction change position used in the present invention, and this embodiment is designed to issue an alarm a certain period of time before reaching the direction change position It is characterized by

Its configuration includes a calculator 30 that calculates the time T to reach the direction change position as T-(↓;=)]stonetn-y)')/V' using the vehicle speed vC, and a setting device 32 that calculates the time T to reach the direction change position. A comparator 34 that outputs an output when the calculation time T is less than T is set to 5K.

The counter 20 and address counter 22 are the same as in the embodiment of FIG. Note that the address counter 22 is incremented when the calculation time T of the calculation unit 30 becomes zero.

The advantage of the embodiment shown in FIG. 6 is that regardless of the vehicle speed Vc, a warning is issued a certain time before the direction change position is reached.
Compared to the case of I, it is possible to have more margin in the certainty g of the direction of change.

Although Fig. 4.6 shows an example of a configuration using circuit blocks, the determination of approach to these turning positions can be done in exactly the same way by program control using a four-way microphone system. can be realized.

As explained above, according to the present invention, the configuration includes the current position of the vehicle calculated based on a preset starting point and destination point, the traveling direction and traveling distance of the vehicle, and the distance between the two points. 5.1. In a device that displays each of the driving routes memorized by driving, an alarm is issued when approaching a turning point on the memorized driving route. Therefore, even if the driver is concentrating on driving, he or she can easily know when he or she is approaching an intersection that requires a right or left turn. You can get the effect that you can.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional device, Fig. 2 is an explanatory diagram of a display, Fig. 3 is a block diagram showing an embodiment of the present invention, and Fig. 4 is a means for determining approach to a direction change position. FIG. 5 is a block diagram showing an embodiment of the present invention, and FIG. 5 is an explanatory diagram showing an example of a display at the time of an alarm according to the present invention. Figure 6 is a block diagram showing another embodiment of means for determining approach to a direction change position. lO...Input section 12...Midage distance sensor 1
3...Direction sensor 14...Arithmetic unit IS...Display device 16.20...Memory 18...Alarm device
22... Address counter 24.30... Arithmetic unit 26132... Setting device 28134... Comparator patent applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] Once the vehicle travel guidance device displays and stores the travel route from the departure point to the destination point by detecting the vehicle's current position, which is calculated based on the vehicle's traveling direction and travel distance. Calculating means for calculating the distance from the current position of the vehicle to a turning point on the wrinkled driving route when traveling on the memorized driving route again; and notification for notifying ゛ and # when the calculated distance is less than a predetermined distance. A vehicle travel guidance device, characterized in that it is provided with means.