JPH0571976A - In-vehicle navigation device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a vehicle-mounted navigation device that gives a break instruction when continuously traveling for a long time at a predetermined speed or more while traveling on a motorway. [Structure] Based on the current position data from the current position calculation unit 5, the signal from the wheel speed sensor 4 and the signal from the timer 41, the break instruction unit 40 determines that the vehicle travels on the motorway at a predetermined speed or higher for a predetermined time or longer. Then, the signal of the break instruction is output and displayed on the display unit 9. [Effect] It is safe to drive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted navigation device, and more specifically, it detects a current position on the basis of an accumulated distance and an accumulated azimuth associated with traveling and displays the present position on a road map. The present invention relates to a vehicle-mounted navigation device.

[0002]

2. Description of the Related Art A vehicle-mounted navigation device displays the current position of a vehicle on a road map for convenience of traveling on a strange land or at night. No. 57-201108.

FIG. 4 is a block diagram showing a conventional vehicle-mounted navigation device. In FIG. 4, reference numeral 1 denotes an operation input unit for setting a destination and inputting an operation, and 2 denotes a current roadway network from a general road to a motorway and information about all roadway segments constituting the whole road network. It is a road network storage unit having a position calculation road network storage unit 2b, and is composed of, for example, a CD-ROM and its reproducing device.

Reference numeral 3 is a direction sensor for detecting the traveling direction of the vehicle based on the geomagnetism, 4 is a wheel speed sensor for generating a pulse corresponding to the rotation speed of the wheel, and 5 is output from the direction sensor 3 and the wheel speed sensor 4. Current position calculation unit that calculates the current position of the vehicle from the road network data stored in the current position calculation road network storage unit 2b, 9 is a display unit, 10 is a display control unit that controls the display unit 9, 50 Is the main controller that controls these systems.

Next, the operation will be described. The current position calculation unit 5 calculates the integrated azimuth from the signal output from the azimuth sensor 3 and the integrated distance from the signal output from the wheel speed sensor 4, and stores the integrated azimuth, the integrated distance, and the current position road network storage. The present position of the vehicle is calculated from the road network data stored in the section 2b.

The main control unit 50 inputs the current position data output from the current position calculation unit 5 and sends a display instruction of the current position to the display control unit 10 based on the operation signal output from the operation input unit 1. Perform and control the system. Under the control of the display control unit 10, the display unit 9 displays the current position of the vehicle and the road map on the screen.

[0007]

Since the conventional vehicle-mounted navigation device is constructed as described above, it is necessary to continue traveling on the motorway for a long time at a predetermined speed or more because the driver's fatigue may cause the vehicle to travel. There were problems such as being dangerous.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a vehicle-mounted navigation device capable of preventing continuous running at a predetermined speed or longer for a long time. ..

[0009]

According to the on-vehicle navigation system of the present invention, at least while traveling on an automobile road, the driver takes a break if traveling at a predetermined speed or more continues for a predetermined time or more. It has a break instruction means for instructing.

[0010]

Since the vehicle-mounted navigation device according to the present invention is provided with the break instructing means for instructing to take a break when traveling at the predetermined speed or more for a predetermined time or more while traveling on the automobile exclusive road, You can drive safely.

[0011]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a vehicle-mounted navigation device according to an embodiment of the present invention. The same or corresponding parts as in the conventional example are designated by the same reference numerals 1 to 5, 2b, 9, 10, and 50 as in FIG. ..

In FIG. 1, 1 is an operation input section for setting a destination and inputting operations, and 2a is a whole road network from a general road to a motorway, and a route search for all road segments constituting the whole road network. A route search road network storage unit 2b for storing information used for storing information used for calculating the current position of all road networks from general roads to motorways and all road segments that make up all road networks. The current position calculation road network storage unit 2 is a road network storage unit including a route search road network storage unit 2a and a current position calculation road network storage unit 2b. For example, from a CD-ROM and its reproducing device. It is configured.

Reference numeral 3 denotes an azimuth sensor for detecting the traveling azimuth of the vehicle based on the geomagnetism, 4 is a wheel speed sensor for generating a pulse corresponding to the rotation speed of the wheel, and 5 is output from the azimuth sensor 3 and the wheel speed sensor 4. It is a current position calculation unit that calculates the current position of the vehicle from the traffic signal and the road network data stored in the current position calculation road network storage unit 2b.

Reference numeral 6 indicates a destination from the destination data set and input by the operation input unit 1, the current position data output from the current position calculation unit 5 and the road network data stored in the route search road network storage unit 2a. It is a route search unit that searches for a route to reach.

Reference numeral 9 is a display unit, 10 is a display control unit for controlling the display of the display unit 9, 41 is a timer for measuring the time during which the vehicle is continuously traveling at a predetermined speed or more, 40
Is determined based on the signal output from the wheel speed sensor 4, the signal output from the timer 41, and the current position data output from the current position calculator 5 that the vehicle is continuously traveling for a long time. Is a break instruction unit that outputs a command signal for giving a break instruction.

Reference numeral 50 is a main control unit for controlling the display control unit 10 by inputting various information from the operation input unit 1, the route search unit 6, the current position calculation unit 5, and the break instruction unit 40, and controlling these systems. is there.

Next, the operation of this embodiment will be described with reference to FIG. However, the description of the same parts as those of the conventional example will be omitted. The route search unit 6 sets the destination data set and input from the operation input unit 1, the current position data calculated by the current position calculation unit 5, and the road network data stored in the route search road network storage unit 2a. Search for a route from the current position to the destination by and. The main controller 50 is the display controller 1
In addition to the current position of the vehicle on the road map, the route from the current position to the destination is superimposed and displayed on the display unit 9 via 0 according to the route data received from the route search unit 6.

On the other hand, the break instructing section 40 includes the wheel speed sensor 4
From the current position data from the current position calculation unit 5 and the signal from the timer 41, it is determined whether or not the time during which the vehicle continuously travels on the automobile exclusive road at a predetermined speed or more has passed a predetermined time or more. When the rest instruction unit 40 determines that the predetermined time or more has elapsed and receives an instruction signal for prompting the driver to take a rest from the rest instruction unit 40, the main control unit 50
Causes the display unit 9 via the display control unit 10 to display a break instruction display as shown in FIG. 3 instead of a road map or the like.

Next, the operation relating to the break instruction control of the vehicle-mounted navigation device of the first embodiment will be described with reference to FIG. FIG. 2 is a flowchart showing the operation of the vehicle-mounted navigation device according to the present invention, which is repeated every predetermined time.

In FIG. 2, in step 101, it is judged from the current position data whether or not the vehicle is traveling on an automobile exclusive road, and if it is traveling on an automobile exclusive road, step 102.
Then, it is judged whether or not the vehicle was running on the motorway last time. If the vehicle was previously traveling on a motorway, the timer 41 for continuous traveling on the motorway is determined in step 103.
Is incremented, and if the vehicle is not traveling on the vehicle exclusive road last time, the timer 41 for continuous traveling on the vehicle exclusive road is set at step 104.

After the processing of step 103 or step 104, the routine proceeds to step 105, where it is judged whether or not the vehicle is traveling at a predetermined speed or higher based on the vehicle speed based on the signal from the wheel speed sensor 4, and it is determined that the vehicle is running at the predetermined speed or higher. If not, step 1
At 06, the timer 41 for continuous running on the motorway is cleared.

If the speed is equal to or higher than the predetermined speed, the routine proceeds to step 107, where it is judged from the value of the timer 41 whether or not the vehicle has continuously run for the predetermined time or longer. Is performed. If the vehicle has not continuously run for a predetermined time or longer, step 108 is not executed.

If it is determined in step 101 that the vehicle is not traveling on the automobile road, steps 102 to 108 are not executed, and the timer 41 for continuous traveling on the automobile road is released in step 109.

Example 2. Although the first embodiment is an example of a vehicle-mounted navigation device having a current position detection unit that detects the current position based on the accumulated distance and the accumulated azimuth associated with traveling, the current position detection unit is a GPS (Glob
al positioning system) that detects an absolute position, or that has both a device that detects the current position based on the accumulated distance and the accumulated azimuth and a device that detects the absolute position. good.

[0025]

As described above, according to the present invention, the driver is instructed to take a break, at least when the vehicle is continuously traveling at the predetermined speed for the predetermined time or more for the predetermined time. Even if you are not aware of it, you can avoid long-term continuous driving and have the effect of driving safely.

[Brief description of drawings]

FIG. 1 is an overall block diagram showing an embodiment of a vehicle-mounted navigation device according to the present invention.

FIG. 2 is a flowchart showing an operation regarding a break instruction control of the vehicle-mounted navigation device according to the embodiment of the present invention.

FIG. 3 is a diagram showing a screen example of a rest instruction of a vehicle-mounted navigation device according to an embodiment of the present invention.

FIG. 4 is an overall block diagram showing an example of a conventional device.

[Explanation of symbols]

 1 Operation Input Section 2b Current Position Calculation Road Network Storage Section (Road Network Storage Means) 3 Direction Sensor 4 Wheel Speed Sensor 5 Current Position Calculation Section 9 Display Section 10 Display Control Section 40 Break Instruction Section 41 Timer 50 Main Control Section (1 , 3, 4, 5) Current position detection means (9, 10) Display means (40, 41) Rest instruction means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirofumi Goto 2-33 Miwa, Mita City, Hyogo Prefecture Mitsubishi Electric Corporation Mita Works (72) Inventor Katsuro Hayami 2-33 Miwa, Mita City, Hyogo Prefecture No. Mitsubishi Electric Corporation Mita Works (72) Inventor Tomoda Yoshida 2-33 Miwa, Mita City, Hyogo Prefecture Mitsubishi Electric Co., Ltd. Mita Works

Claims (1)

[Claims] 1. A vehicle-mounted navigation system comprising: a road network storage unit for storing road network information; a current position detection unit for detecting the current position of a vehicle; and a display unit for displaying the current position of the vehicle on a road map. The device outputs a command signal to the display means to instruct the driver to take a break when it detects that the vehicle has continued to travel at a predetermined speed or longer for a predetermined time or longer while at least traveling on a road dedicated to automobiles. An in-vehicle navigation device characterized by being provided with an instruction means.