JPH07182595A - Navigation device with dangerous operation reporting function - Google Patents

Abstract

PURPOSE:To obtain a navigation device with a dangerous operation reporting function whereby safety in driving is improved by providing a road detecting part, a brain wave detecting part, a safety evaluating part and a reporting part. CONSTITUTION:An interpretation processing part inside a mainbody part 107 has the function as the road detecting part detecting information concerning a road in CD-ROM and the function as the safety evaluating part evaluating and judging the safety of an user operation in addtion to the function for interpretating information. Here, after map information with a present position obtained by a GPS antenna part 101 as a center is obtained by a CD access part 104, the road with probability to run in future is previously grasped by the road detecting part of the mainbody part 107 and the road to run in future is estimated by the safety evaluating part based on the movement in future, which is obtained by the brain wave detecting part 106, so that safety is evaluated and a report is executed from the reporting part 105 based on the result. Thus, danger is detected before action when dangerous action in driving is about to be executed so as to report it to a driver without previously setting a drive route.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device having a dangerous function notification function having a GPS function.

[0002]

2. Description of the Related Art Globa receives signals from three or more satellites and determines the latitude and longitude of the current position from the signals.
l Positioning System (hereinafter, G
A car navigation device which has a function (referred to as PS), assists driving of a car by reading map information on a current location from a CD-ROM and displaying the map information is attracting attention.

In the CD-ROM, road information is stored in addition to map information, for example, speed limit information and one-way traffic regulation information, which are displayed on the screen as necessary. Is possible. By displaying and using these pieces of information, the user who is the driver can drive more safely.

On the other hand, the technology of information processing of the brain has advanced greatly, and as is surveyed in "Latest Brain Mechanics" (published by Gakkensha), the brain has a preparatory potential prior to intentional behavior. It has become clear that the electric potential corresponding to that is generated even if the user imagines that the vehicle turns right.

[0005]

However, in such a conventional navigation apparatus, unless the user sets a route, the navigation apparatus does not know which road to follow. Therefore, if you do not set a route and you enter a new road through an intersection, you can get information about the road you are going to pass for the first time after entering the road, It is possible to instruct information according to the state. For example, it becomes possible to inform the user that the road is prohibited to enter only after entering the prohibited road, and to perform dangerous operation such as entering the prohibited road. Therefore, there is a problem that road information such as entry prohibition is not fully utilized.

In order to make the most of the entry prohibition information, the user has to confirm the information on whether the entry is prohibited or not on the screen immediately before entering a new road, and to perform a key operation to see this screen. However, there is a problem in that there is a great risk when considering that an intersection or the like is in progress.

According to the present invention, even if a driving route is not set in advance, when a dangerous act for driving is attempted, the danger can be detected and the user can be notified prior to the dangerous act. It is an object of the present invention to provide a navigation device with a dangerous operation notification function that can improve safety.

[0008]

In order to achieve this object, a navigation device with a dangerous operation notification function of the present invention determines a current position based on a GPS signal by a GPS antenna section, and a CD based on this current position. A navigation device for reading and displaying information on a CD-ROM by an access unit, the road detecting unit for detecting road information on the CD-ROM, an electroencephalogram detecting unit for detecting electroencephalographic information, and the electroencephalogram. It is configured to have a safety evaluation unit that evaluates the safety of an action that the user intends to perform based on the information and the road information, and a notification unit that notifies the risk of the action.

[0009]

According to this structure, after the map information centering on the current position obtained by the GPS antenna unit is obtained by the CD access unit, the road detecting unit grasps beforehand the roads that may move in the future. Based on the future movements obtained by the electroencephalogram detection unit, the safety evaluation unit estimates the road to be traveled, evaluates the safety, and notifies the notification unit based on the result.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A navigation device with a dangerous operation notification function according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a schematic configuration diagram of a navigation device with a dangerous operation notification function according to this embodiment. Reference numeral 101 is a GPS antenna unit that estimates the current position from signals from satellites,
102 is a display unit equipped with an LCD, 103 is a key input unit for performing key operations for various controls, and 104 is a CD-
A CD access unit that includes a ROM and reads information on a CD-ROM; 105, a voice output unit as a notification unit that includes a speaker; 106, an electroencephalogram detection unit for detecting an electroencephalogram;
107 is a main body.

When the present system is used, the GPS antenna unit 101 is installed at a place where signals from satellites can be received, for example, on the hood, and the electroencephalogram detection unit 106 is mounted on the head of the driver, and the display unit 102. , Key input unit 103, C
D access unit 104, voice output unit 105, and main body unit 1
07 is placed at a position where the user can easily use it.

FIG. 2 shows an example of the structure of the main body 107.
In FIG. 2, the main body unit 107 is a GPS antenna unit 10.
1, an antenna control unit 201 that controls the I / F with the display unit 1, a display control unit 202 that controls the I / F with the display unit 102, and a key input control unit 20 that controls the I / F with the key input unit 103.
3, a CD control unit 204 that controls the I / F with the CD access unit 104, a voice output control unit 205 that controls the I / F with the voice output unit 105, and an I / F with the electroencephalogram detection unit 106
An electroencephalogram detection control unit 206 that controls the above, each control unit 201 to
An interpretation processing unit 207 that interprets information 206 is included.

In addition to the function of interpreting information, the interpretation processing unit 207 functions as a road detection unit for detecting information about roads on the CD-ROM and evaluates and judges the safety of the operation of the user (user). It has a function as a safety evaluation section.

FIG. 3 shows a flowchart of the processing of the interpretation processing unit 207. In the following description, each control unit 201 described above will be described.
˜206 and the interpretation processing unit 207 are assumed to be configured by independent tasks. That is, it is assumed that it has a multitasking configuration. Therefore, in the present embodiment, description will be made assuming that an OS (operating system) that controls switching between tasks is operating.

The user sets a CD-ROM containing map information in the system and turns on the power. The processing of the OS is started by turning on the power supply. The OS is set so as to start the processing of the interpretation processing unit 207 at the time of activation, and the processing of the interpretation processing unit 207 is thereby started.

The interpretation processing unit 207 first performs initialization processing (# 301). In this initialization processing, the antenna control unit 201, the display control unit 202, the key input control unit 203, C
The D control unit 204, the voice output control unit 205, and the electroencephalogram detection control unit 206 are instructed to start.

The antenna control unit 20 is activated by this activation instruction.
1 activates the GPS antenna unit 101. G
The PS antenna unit 101 starts detecting an artificial satellite. When four or more artificial satellites are detected, the latitude, longitude, and altitude of the current position are calculated based on the signals from the artificial satellites.
When three artificial satellites are detected, the latitude and longitude of the current position are calculated. When only two or less artificial satellites can be detected, the fact is notified to the antenna control unit 201.
Here, description will be made assuming that three or more satellites can be detected. The GPS antenna unit 101 periodically calculates the latitude and longitude and notifies the antenna control unit 201 of the result. From the GPS antenna unit 101 to the antenna control unit 20
The notification of latitude and longitude information to 1 will continue until the power is turned off after the start-up. Upon receiving the notification of the current position from the GPS antenna unit 101, the antenna control unit 201 notifies the interpretation processing unit 207 of the notification. It is assumed that the interval at which the GPS antenna unit 101 calculates the current position is sufficiently short as compared with human motion.

The display control unit 202 sets video-related hardware on the display unit 102 to enable display. The key input control unit 203 makes settings for the key input unit 103 so that a key can be input. The settings of the display control unit 202 and the key input control unit 203 are, for example, predetermined contents for a specific port (for example,
This is performed by setting (display start on LCD).

The CD control unit 204 includes a CD access unit 10
4 is instructed to read the volume file at a fixed position on the CD-ROM. This volume file has route information for various information necessary for drawing a map, and by reading this information, actual data can be accessed. The voice output control unit 205 makes settings for the voice output unit 105 so that voice output is possible.

The electroencephalogram detection control unit 206 instructs the electroencephalogram detection unit 106 to start detection of electroencephalogram. The electroencephalogram detection unit 106 is set to detect a pre-motion signal in the case of trying to change the direction to the right direction or the left direction in the electroencephalogram, and when the corresponding pre-motion signal is detected, The brain wave detection control unit 206 is notified of information indicating the right direction or the left direction.

Subsequently, the interpretation processing unit 207 receives information on the current location from the antenna control unit 201 (# 30).
2). If the information cannot be received immediately (for example, if the predetermined time has not yet elapsed), wait until it is available and obtain the information. The interpretation processing unit 207 requests the CD control unit 204 to read the map information of the current location, and waits for the notification of the reading completion (# 303). CD
The control unit 204 determines the map information to be read from the route information read from the CD-ROM and the latitude / longitude notified from the interpretation processing unit 207. The route information is C
The range (maximum / minimum latitude / longitude) covered by the map stored in the D-ROM and the map information CD-
There is a position on the ROM and information about the size of the map information. Based on this route information, it is determined which map is to be read, and the CD access unit 104 is instructed to read the information of the area where the corresponding map exists. The information read from the CD-ROM by the CD access unit 104 is written in an area recognized by the interpretation processing unit 207 in advance, and when the reading of the map information is completed, the interpretation processing unit 207 is notified of the completion. Here, the CD control unit 2
The information read by 04 includes information about roads, which is not directly related to the display.

The interpretation processing unit 207 picks up road information from the obtained map information and judges whether the current point corresponds to any of the roads (# 304). Usually, the current position obtained by the GPS antenna unit 101 includes an error. Therefore, a search is made to see if a road exists within the error, and if there is, the GPS antenna unit 101 notifies the road. Correct the current point to the point closest to the point. When there are a plurality of applicable roads, the most plausible road (for example, the road closest to the current position) is selected and the current position is corrected using the selected road. If there is a corresponding road, no correction will be made.

If there is no corresponding road, it is judged whether or not an intersection exists within a certain distance from the current position based on the information about the road (# 305). The fixed distance here is set in consideration of a time sufficient for notifying the user that the currently selected course is dangerous and taking the next action.

When there is an intersection, the brain wave detection control unit 206 is instructed to the user about the motion of the user (whether to rotate to the right or to the left,
Request if you are trying to rotate (# 30
6).

Then, the information on the road corresponding to the user's exercise is evaluated (# 307). That is, if it is not trying to turn, it is judged whether the road is straight ahead, if it is going to turn right, the road is turning right, if it is going to turn left, the road is turning left. .

If entry is possible, nothing is done, but if entry is prohibited due to one-way traffic or the like, the voice output control unit 205 is instructed to output a message. When the voice output control unit 205 is instructed to output a message, the voice output control unit 205 informs the user via the voice output unit 105 that the currently selected action is dangerous by voice announcement (# 30).
8).

Following these processes, the interpretation processing unit 20
Reference numeral 7 performs processing such as instructing the display control unit 202 to display a map based on the map information or receiving a signal from the key input control unit 203 to control the screen, but is directly related to the present invention. Therefore, this description is omitted.

By the above operation, the user can know whether or not this action is dangerous before performing the action to be performed, and the driving safety can be improved.

Although not described in detail, the following embodiments are also embodiments of the present invention. You can enter the road ahead from the intersection, but if the maximum speed becomes lower than the road currently in progress, you will be notified by voice to that effect,
Call attention.

By this operation, the user can know the maximum speed of the road which he is going to enter before this approach, and the driving safety can be improved.

[0032]

As described above, according to the present invention, after the map information centering on the current position obtained by the GPS antenna unit is obtained by the CD access unit, the road detecting unit may proceed to the road in the future. In advance, based on future movements obtained by the electroencephalogram detection unit, the safety evaluation unit estimates the road ahead, the safety is evaluated, and the notification unit gives notification based on the result. be able to.

Therefore, even if a driving route is not set in advance, if a dangerous act is attempted during driving, the danger can be detected and the user can be informed prior to the dangerous act, and the driving safety can be improved. Can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a navigation device with a dangerous motion notification function according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a main body unit of the same embodiment.

FIG. 3 is a flowchart of processing of a main body unit of the same embodiment.

[Explanation of symbols]

 101 GPS antenna section 104 CD access section 105 Voice output section 106 Brain wave detection section 207 Interpretation processing section

Claims (1)

[Claims] 1. A GPS antenna unit determines a current position based on a GPS signal, and a CD based on the current position.
A navigation device for reading and displaying information on a CD-ROM by an access unit, the CD-ROM
A road detecting unit that detects information on the upper road, a brain wave detecting unit that detects information on an electroencephalogram, and a safety that evaluates the safety of an action the user intends to take based on the electroencephalogram information and the road information. A navigation device with a dangerous action notification function, which has an evaluation unit and a notification unit that notifies the danger of the action.