JPH06243391A - Navigation system - Google Patents

Abstract

PURPOSE:To enable immediate driving operation by displaying plural pieces of detected information and instructions orderly on one display device and enabling an operator to recognize the information and display by viewing one display device. CONSTITUTION:A display controller 3 consists of an economic travel index generation part 5 which generates an economic travel index on the basis of the measurement result of a measuring sensor group 1, an environment recognition part 8 which recognizes environment on the basis of the measurement result of an environment information sensor group 2, an instruction input part 7 which inputs an instruction by a selecting operator on a display screen, a display control part 6 which determines display contents outputted to a display device 4, a speaker 10 which informs in voice on the basis of the recognition result and the display contents, etc., and a speech informing part 9 which determines the contents informed from the speaker. In this case, images based upon the index generated by the index generating means, the recognition result of the environment recognizing means, and the measurement result of a measured object are displayed orderly on one screen.

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 system.

[0002]

2. Description of the Related Art Conventionally, in order for a driver to drive a vehicle more safely, the number of instruments (vehicle speed gauge, fuel level gauge, etc.) mounted on the vehicle has increased. But that alone is not enough to drive a car safely. For example, when going to a strange land, the conventional vehicle cannot know the position of the own vehicle. Moreover, in order to know the time it takes to reach the destination and the estimated time of arrival, there is no choice but to rely on the experience of the driver or the navigator.

In order to solve such a problem, it is effective to display the map of the present position display device of the mobile unit (Japanese Patent Application No. 3-26916) and the position of the own vehicle such as an automobile.
In addition, a running state display device (Japanese Patent Application No. 2-264812)
Search and display the shortest distance route, the shortest time route, etc. from the starting point to the target point of the navigation system (Japanese Patent Application No. 2-278116) that calculates and displays trips and fuel consumption from vehicle speed and fuel consumption It is effective to do so.

However, in the above method, since the display device for displaying the road map, the running state, the shortest route, etc. is different,
You have to look at multiple displays to get all the information. Furthermore, the operation amount of the driver must be determined based on the plurality of pieces of information displayed on the plurality of display devices.

[0005]

In the above-mentioned prior art, the driver or passenger must look at all the display devices and judge which display device currently needs the information. It was not safe to look at the display device installed in a different place every time. Furthermore, when displaying the target speed and the actual vehicle speed for economical driving,
Since the driver determines the operation amount of the accelerator or the like based on the target speed and the vehicle speed, it is difficult to compare the two pieces of information when they are displayed on different display devices. When comparing a plurality of information and determining the operation amount based on the result, if the information is displayed on a plurality of display devices, or even if it is only one display device, it is possible to compare the information. It is troublesome and not preferable for safety.

An object of the present invention is to provide a navigation system in which an operator can recognize information and instructions only by looking at one display device and can immediately perform a driving operation as needed.

[0007]

In order to achieve this object, the present invention corresponds to a plurality of measuring means for measuring the respective states of a plurality of measuring objects and the respective measurement results of the measuring means or the measurement results. In the navigation system that displays the instruction to notify the state of the measurement target, the traveling environment is recognized based on the index generation means corresponding to each measurement result of the measurement means and the measurement result of each measurement means. By having an environment recognition means and a display means for sequentially displaying images based on the index generated by the index generation means, the recognition result by the environment recognition means, and the measurement result of the measurement target on one screen, the operation is always performed. Allows a person to recognize information and instructions by looking at a single display device, and to immediately perform driving operation as necessary. Than it is.

[0008]

According to the above configuration, the plurality of detected information and instructions can be displayed in order on one display device, so that the operator can recognize the displayed information and instructions by looking at one display device. It becomes possible to operate the vehicle immediately if necessary.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a first embodiment of a navigation system according to the present invention.

In FIG. 1, reference numeral 1 designates a group of measuring sensors such as wheel speed, battery voltage, and fuel gauge. Reference numeral 2 is a group of environmental information sensors such as a CCD camera, an infrared sensor, and an ultrasonic sensor. Reference numeral 3 is a display control device 3 according to the present invention, which takes in information from the measurement sensor group 1 and the environmental information sensor group 2 and determines the content to be displayed on the display 4. The display control device 3 that performs the operation according to the present invention, based on the measurement result of the measurement sensor group 1, for example, the economic travel index generation unit 5 that generates the economic travel index when the destination and the estimated arrival time are input.
And an environment recognition unit 8 for recognizing the environment based on the measurement result of the environment information sensor group 2, an instruction input unit 7 for inputting an instruction of a selection operator of the display screen, and a display content output to the display device 4. The display control unit 6, a speaker 10 that gives a notification by voice based on the recognition result, the display content, and the like, and a voice notification unit 9 that determines the content to be notified from the speaker.

The output of each sensor of the measurement sensor group 1 has information on the detected physical quantity. Further, depending on the range of this physical quantity, whether the system of the part is normal or abnormal, or the degree of danger can be known. The information of the environmental information sensor group 2 is assumed to include the position of the white line on the road, various road signs, obstacles ahead, and the like.

Here, the economic travel index is generated based on the measurement results of various sensors. However, not only the measurement results of the sensors but also the destination and the estimated arrival time are input, and the travel index for the designated time, map information, and communication. The traffic congestion avoidance driving information may be generated by adding the position information and the road traffic congestion information.

FIG. 2 is a block diagram showing a second embodiment of the configuration of the navigation system according to the present invention. In the navigation system of the second embodiment, in particular, the display control device 3 stores in advance a display screen, a map, etc., and the measurement sensor group 1, the environmental information sensor group 2, and the environmental information sensor group 2 shown in FIG. 1, respectively. Also, it is connected to the instruction input unit 7, the display device 4, and the speaker 10. The economic travel index generation unit 5 stores the index in the index storage unit 2
3, the display control unit 6 includes a display screen storage unit 25 that stores a display method, a map information storage unit 24, and a voice storage unit 26 that stores the voice notified by the voice notification unit 9. .

Here, the index storage unit 23 outputs the target speed when the destination and the estimated arrival time are input, and outputs the estimated arrival time when only the destination is input. The map information storage unit 24 stores a road map, a road gradient, and the like.
The display screen storage unit 25 stores a display screen that displays the measurement result measured by the measurement sensor group 1, the index generated by the economical traveling index generation unit 5, the recognition result recognized by the environment recognition unit 8, and the like, The screen to be displayed is searched and determined by the display content selection signal input to the instruction input unit 7.

When the sampling signal from the clock 21 is input, the A / D converter 22 A / D-converts the value of the measurement sensor group 1 and inputs the value to the economic travel index generation unit 5.
As described above, in the navigation system of the second embodiment, the display screen and the like are stored in advance. By this,
The display screen can be selected at high speed. Further, it is possible to output signals from the measurement sensor group 1, the economic travel index generation unit 5, and the environment recognition unit 8 at once. It is also possible to select and output the display contents as needed.

FIG. 3 is an explanatory diagram showing an embodiment of the storage data structure and contents of the index storage section in FIG. In the present embodiment, in order to facilitate the description, the contents referred to by the economic travel index generation unit of FIG. 2 are three types of vehicle speed, throttle opening, and remaining fuel amount, and are stored in the index storage unit of FIG. The storage data structure is a three-dimensional array. The index storage unit stores the running index contents for each minimum bit of the A / D converter 22 in FIG. Also, the vehicle speed, throttle opening, and full span of the remaining fuel amount are V (k
m / h), T (deg), and L (l).

In the figure, A is a normal state and the vehicle speed is V
(I) (km / h), the throttle opening is T (j) (d
eg), and the remaining fuel amount is L (k, l). Also,
In B, the vehicle speed is V (v), the throttle opening is T (j),
In the high speed state where the remaining fuel amount is L (k), the vehicle speed is V in C.
In (i), the throttle opening is T (t) and the remaining fuel amount is L (k).
(I) shows a gas shortage state in which the throttle opening is T (j) and the remaining fuel amount is L (k). With such a storage data structure, the economical traveling index generation unit 5 of FIG. 2 determines which information (vehicle speed, throttle opening, fuel remaining amount) is important for economical traveling in the states A to D. , It is possible to generate indicators for economical traveling such as how to change the vehicle speed in the future.

FIG. 4 is an explanatory view showing an embodiment of the screen configuration of the display screen of the display device in FIG. In the present embodiment, the fuel level meter 41, the vehicle speed meter 42, the engine speed meter 43, the economical traveling index display space 44, the video image 45 by the vehicle-mounted camera, the road map 46, the screen selection buttons 47, 48, 410, and the video image. The recognition result display section 49 of FIG. Here, the economical traveling index display unit 44 is an example in which when the destination and the distance to the destination are input, the estimated arrival time of the destination is calculated and displayed from the current vehicle speed and the like. Also, the recognition result display space 4
9 is an example of displaying the result of recognizing the sign of the highway.

The driver or the navigator can also use the screen selection buttons 47, 48, 410 to display only the desired information. Screen selection is performed using the touch panel or keyboard. Regarding the video image 45, in order to make the image easy to see, the screen can be selected by touching any part of the left half of the video image.
The calibration / learning button 411 outputs various messages to the button space based on the vehicle information, the image recognition result, and the like. Here, as a message, the current location (Yokohama IC)
Is output, the vehicle information such as overspeed and fuel shortage, the situation of surrounding vehicles such as the distance to the vehicle in front,
It is also possible to output the running environment such as the weather and the road surface condition.

Further, the calculation result and the recognition result may be different at the current position or the like. In this case, the position can be calibrated by pressing the button while the message is being output. It is also possible to learn the calculation formula for calculating the current position.
Further, when the button is pressed, calibration / learning is performed (manual), and when the button is not pressed, calibration / learning is performed (automatic) can be selected.

FIG. 5 is an explanatory diagram showing an embodiment of the screen configuration in which the screen selection button 47 of the display screen in FIG. 4 is selected. The display screen 50 in this embodiment includes a fuel level meter 41, a vehicle speed meter 42, and an engine speed meter 43. By allowing the user to freely select the screen, it is possible to delete the display contents that the driver or the navigator feels unnecessary for driving. In addition, by selecting the screen selection button 47 again as needed, the screen shown in FIG.
You can return to the display screen of.

FIG. 6 is an explanatory diagram showing an embodiment of a screen configuration in which the screen selection button 48 of the display screen shown in FIG. 4 is selected. On the display screen 60 in the present embodiment, the traveling index display space 44, the current position correction button 62 at the interchange, the current position correction button 63 at the intersection, the current position correction button 64 at other points, and the current position. It is composed of a correction confirmation button 61. Here, the travel index display space displays the target vehicle speed when the destination and the estimated arrival time are input. The current position correction button at the interchange, the current position correction button at the intersection, and the current position correction button at the other points are selected when approaching an interchange or intersection on a highway, etc., to correct the current position. I do. Further confirmation of the correction is performed using the confirmation button for current position correction. If necessary, by selecting the screen selection button 48 again,
It is possible to return to the display screen of FIG.

As described above, the economic travel index generation unit 5 stores all the display screens corresponding to the combinations of the values of the measurement sensor group 1, and the values of the measurement sensor group 1 for each time interval of the clock 21. You can search the economic travel index and output it to the display without delaying the input of. In the embodiment, for simplicity, it is assumed that the displayed contents are three types of vehicle speed, engine speed, and remaining fuel amount, but when the measurement items of the measurement sensor group 1 are M types, the economic travel index is displayed. The storage data structure of the generation unit 5 is an M-dimensional array.

FIG. 7 is an explanatory diagram showing an embodiment of a screen configuration displaying information measured by the measurement sensor group 1 and the traveling index generated by the economic traveling index generation unit 5. On the display screen 70 in this embodiment, the display screen change button 47 is displayed.
, A speed display space 71, an output-scheduled arrival time display space 72, and a power state display space 73.

The speed display space 71 shows the target vehicle speed in the target vehicle speed display space 74, the vehicle speed in the vehicle speed display space 75, and the difference between the target vehicle speed and the vehicle speed in the difference display space 76 between the target vehicle speed and the vehicle speed. indicate.

The estimated arrival time display space 72 for each output is
When the maximum output is maintained, the estimated destination arrival time is displayed in the space 77. When the maximum output is maintained, the estimated destination arrival time is maintained. When the current output is maintained, the estimated destination arrival time is displayed in the display space 78. In this case, the estimated arrival time at the destination, the elapsed time from the departure time in the elapsed time display space 79, and the remaining time until the target arrival time at the destination are displayed in the remaining time display space 710.

The power status display space 73 includes a fuel remaining amount display space 711, a fuel remaining amount and current display space 712.
Current, voltage is displayed in voltage display space 713, inverter temperature is displayed in inverter temperature display space 714, and motor temperature is displayed in motor temperature display space 715. When the estimated arrival time for each output is significantly different from the target arrival time, not only the numerical value but also the color may be displayed. In the case where the power state interferes with the traveling or is likely to cause an obstacle, not only the numerical value display but also the color may be changed and displayed.
Furthermore, the power status is displayed numerically, but this is not the case.

FIG. 8 is a block diagram showing a third embodiment of the navigation system of the present invention. In the navigation system according to the present embodiment, the display control device 3 calculates and obtains the display screen and the economic travel index, and the measurement sensor group 1, the environmental information sensor group 2 and the instruction shown in FIG. It is connected to the input unit 7, the display device 4, and the speaker 10. The voice that the voice notification unit 9 notifies the economic travel index generation unit 5 of the index calculation unit 81 that calculates the index, the display control unit 6 that displays the display screen calculation unit 82 that calculates the display method, and the map information storage unit 24. Voice storage unit 2 that stores
The case where 6 is provided is shown.

Here, the index calculating section 81 outputs the target speed when the destination and the estimated arrival time are input, and outputs the estimated arrival time when only the destination is input. The map information storage unit 24 stores a road map, a road gradient, and the like.
The display screen calculation unit 82 calculates a display screen that displays the measurement result measured by the measurement sensor group 1, the index generated by the economical traveling index generation unit 5, the recognition result recognized by the environment recognition unit 8, and the like, The screen to be displayed is determined by the display content selection signal input to the instruction input unit 7. When the sampling signal from the clock 21 is input, the A / D converter 22 A / D converts the value of the measurement sensor group 1 and inputs the value to the economic travel index generation unit 5. In this way, the navigation system of the third embodiment calculates the display screen and the like. As a result, the storage capacity of the display screen can be reduced.

FIG. 8 is provided with an index calculation unit 81 for the economic travel index generation unit 5 to calculate various travel indexes, and a display screen calculation unit 82 for the display control unit 6 to calculate various display methods. It is a block diagram of a present Example in a case. When the sampling signal from the clock 21 is input, the A / D converter 22 changes the value of the measurement sensor group 1 to A
/ D conversion is performed and input to the index calculation unit 81. Index calculator 81
Calculates and determines various information of the index to be displayed based on this value. Further, various information of the screen to be displayed is calculated and determined by the selection information of the display screen input to the instruction input unit 7 by the driver or the navigator.

In the above two embodiments, the case where the economic travel index generation unit 5 and the display control unit 6 respectively include the index storage unit 23 and the display screen storage unit 24, and the index calculation unit 8 are provided.
1 and the case where the display screen calculation unit 82 is provided are as described below. That is, when the display control unit 6 includes the in-display screen storage unit 24, since all the display screens are stored in advance, the display control unit 6 does not need to perform any calculation, but various display screens are displayed. It requires a large amount of storage capacity for storage. On the other hand, when the display control unit 6 includes the display screen calculation unit 82, the display control unit 6 only stores various arithmetic expressions.
Although the storage capacity is small, it is necessary to calculate various display screens using these arithmetic expressions, so that the display control unit 6
Will require some calculations. Therefore, which of the method in which the display control unit 6 is provided with the in-display screen storage unit 24 and the method in which the display control unit 6 is provided with the display screen calculation unit 82 is
It may be determined from the relationship between the computing capacity and the storage capacity of the display control unit 6. The same applies to the economic travel index generation unit 5.

[0033]

According to the present invention, since a plurality of detected information and instructions are displayed on one display device, the operator can
It is possible to instantly recognize the displayed information and instructions by looking at one screen.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a block diagram when the economic travel index generation unit and the display control unit include an index storage unit and a display screen storage unit, respectively.

FIG. 3 is an explanatory diagram of a storage data structure of an index storage unit.

FIG. 4 is an explanatory diagram of a screen when vehicle information, an economic travel index, a video image, and a road map are displayed.

FIG. 5 is a front view when vehicle information is displayed.

FIG. 6 is a front view when an economic travel index is displayed.

FIG. 7 is an explanatory diagram of a screen when vehicle information and an economic travel index are displayed.

FIG. 8 is a block diagram when the economic travel index generation unit and the display control unit include an index calculation unit and a display screen calculation unit, respectively.

[Explanation of symbols]

1 ... Measurement sensor group, 2 ... Environmental information sensor group, 3 ... Display control device, 4 ... Display device, 5 ... Economic travel index generation unit, 6 ...
Display control unit, 7 ... Instruction input unit, 8 ... Environment recognition unit, 8 ... Voice notification unit, 10 ... Speaker.

Front page continued (72) Inventor Masatoshi Furuya 1099, Ozenji, Aso-ku, Kawasaki-shi, Kanagawa, Ltd. System Development Laboratory, Hitachi, Ltd. Manufacturing Systems Development Laboratory

Claims (15)

[Claims] 1. A plurality of measuring means for measuring respective states of a plurality of measuring objects, a measurement result of each of the measuring means, and an instruction corresponding to the measuring result are displayed to notify the state of the measuring object. In the navigation system, the index generation means corresponding to each measurement result of the measurement means, the environment recognition means for recognizing a traveling environment based on each measurement result of the measurement means, and the index generated by the index generation means And a display means for displaying the recognition result of the environment recognition means and the measurement result of the measurement target on one screen. 2. A plurality of measuring means for measuring the respective states of the plurality of measuring objects, a measurement result of each of the measuring means, and an instruction corresponding to the measuring result are displayed to notify the state of the measuring object. In the navigation system, the index generation means corresponding to each measurement result of the measurement means, the environment recognition means for recognizing a traveling environment based on each measurement result of the measurement means, and the index generated by the index generation means And a voice notification unit for notifying the recognition result of the environment recognition unit and the measurement result of the measurement target by voice. 3. The index generation means according to claim 1 or 2, wherein the index generation means is provided with an index storage means which is stored in advance, and the index generation means refers to the index storage means and corresponds to the reference result. A navigation system that outputs a display screen. 4. The navigation system according to claim 1 or 2, further comprising an index calculating unit for calculating the index based on the measurement result, and outputting a display screen based on the calculation result of the index calculating unit. 5. A function according to claim 1 or 2, wherein an instruction input means for inputting an instruction for an operator to select display contents is provided, and a display screen is output based on an input result of the instruction input means. Navigation system having. 6. The navigation system according to claim 1 or 2, wherein a touch panel is used as an instruction input means for an operator to input an instruction for selecting display contents. 7. The map information storage unit for indicating the current position and the instruction input unit for inputting an instruction of the operator according to claim 1 or 2, wherein the recognition result of the environment recognition means or the instruction of the operator is provided. A navigation system that has a function of correcting the current position based on. 8. The vehicle speed as an index according to claim 1 or 2, wherein the vehicle speed measured by the measuring means and the vehicle speed as an index generated by the index generating means are displayed adjacently to each other. System that displays the difference between vehicle speed and vehicle speed. 9. The estimated time of arrival at the destination when the maximum speed generated by the index generating means is maintained adjacent to the estimated time of arrival at the destination when the current vehicle speed is maintained according to claim 1 or 2. Navigation system that displays 10. The navigation system according to claim 1, wherein the map information storage unit for indicating the current position stores the shape of the road and the road gradient. 11. The risk level during traveling of a vehicle according to claim 1 or 2, wherein the information measured by the measuring means, the index generated by the index generating means and the like are judged, and the color is determined according to the risk level. Navigation system that changes and displays. 12. The navigation system according to claim 1 or 2, wherein the information measured by the measuring means for generating the economical traveling index by the index generating means includes a vehicle speed, a gear position and a throttle valve opening. system. 13. The vehicle speed according to claim 1 or 2, wherein the index generation means includes information measured by the measurement means to generate a designated time travel index for reaching a destination within a designated time. A navigation system that includes. 14. A navigation system according to claim 1 or 2, wherein calibration or learning is performed when there is a difference between the measurement result, the recognition result, etc. and an event actually occurring. 15. The navigation system according to claim 14, wherein automatic or manual can be selected when performing calibration and learning.