JPH0666586A - Navigating apparatus for vehicle - Google Patents

Abstract

PURPOSE:To obtain a navigation apparatus for a vehicle in which unnecessary voice guide to driver is removed and unpleasant feeling is not imparted to the driver. CONSTITUTION:A route guide unit 26 reads map information around own vehicle from a map information storage unit 10, superposes present own vehicle position and advancing direction and a route stored in a route storage unit 24, and displays them on a display unit 28. The route guide unit 26 designated a voice controller 30 so as to simultaneously generate voice corresponding to route guiding at an intersection. The controller 30 reads information stored as digital data in a voice storage unit 32, converts it into an analog signal, and drives a speaker 34. If the vehicle is out of the route, a route deviation deciding unit 26a instructs the controller 30 to stop unnecessary voice guiding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation device for guiding a route by voice, and more particularly to a route guidance when a route is lost.

[0002]

2. Description of the Related Art Various devices for reducing a driver's burden have been studied and are now mounted on a vehicle. Among them, there is a navigation device for guiding a route to a destination. In addition, this navigation has a function of informing a driver of a route to be selected when passing through a branch point such as an intersection, and a route guidance is known by a guidance voice (for example, a special route is known). Kaihei 1-
No. 17819).

This navigation device has a function of searching for a route from the current position to the destination by inputting the destination, and the driver can be notified by displaying the searched route. . Also, it has a function of detecting the current position of the vehicle, and displays both the route and the current position when traveling to guide the route.

On the other hand, there is a case where the route deviates from the planned route although the route guidance is performed. In such a case, the driver may want to know the route from the place to the destination. Therefore, Japanese Patent Laid-Open No. 1-1738
Japanese Patent No. 15 discloses a device which, when a vehicle deviates from a preset route, notifies the driver of this and re-searches for a route to a destination.

As a result, even if the driver deviates from the route, the driver can obtain the route guidance from the place to the destination, and the proper route guidance can be obtained.

[0006]

However, in the conventional navigation system, since the route guidance and route display by voice are continued even if the driver voluntarily deviates from the route, for example, while the route is traveling. There is a problem that the driver is uncomfortable because the voice guidance can be continued even when visiting a gas station or a store by turning right or left.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a vehicular navigation device that eliminates unnecessary voice guidance to the driver and does not cause the driver any discomfort. .

[0008]

In order to achieve the above object, the present invention is a route guidance device for a vehicle, which searches for a route to a destination and guides the route by voice and screen display at a branch point or the like. A current position detecting means for detecting the current position of the vehicle, a comparing means for comparing the current position with a route obtained by searching, a route deviation detecting means for detecting a route deviation based on the comparison result by the comparing means, and a route And a control means for stopping the route guidance by voice when the deviation is detected.

[0009]

Therefore, in the present invention, when the vehicle deviates from the route, the voice guidance is forcibly stopped even at the timing of the route guidance by the voice to prevent the driver from feeling uncomfortable. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of this apparatus. A map information storage unit 10 for storing information such as roads, place names (intersection names), building names, river names, etc. is provided, and the stored map information can be read out as necessary. There is. In addition, a satellite navigation system (hereinafter GPS) for measuring the current position of the vehicle.
Is provided), a direction sensor 16 for detecting the traveling direction of the host vehicle based on the geomagnetism, and a distance sensor 18 for detecting the traveling distance based on the rotational speed of the wheels. The current position measurement unit 12 determines the current position of the vehicle based on the detection result. Further, information from the steering sensor 17 is also input and used for map matching or the like for correcting the current position to the intersection on the map when turning right or left at the intersection.

In order to guide the route to the destination, the destination is indicated on the screen of the display unit described later by the input unit 19 or is input by the place name or the like, and the current position calculated by the current position measuring unit 12 is calculated. The route from the position to the destination is calculated by the route calculation unit 22 included in the calculation control unit 20 using the data in the guidance information storage unit 10a, and the calculated route is stored in the route storage unit 24. An appropriate route search method is used to calculate this route.

After inputting the destination and determining the route, the actual route guidance is performed. The route guidance unit 26 included in the arithmetic control unit 20 reads the map information around the own vehicle from the map information storage unit 10 and superimposes it together with the current own vehicle position and traveling direction and the route stored in the route storage unit 24. Is displayed on the display unit 28.

The display unit 28 is provided in the instrument panel near the driver's seat, and the driver can see the display unit 28.
Check the location of your vehicle by looking at and get information about future routes.

When the position of the vehicle approaches an intersection where the route should be changed, the display unit 28 displays the name of the intersection and the distance to the intersection. Further, at the same time with this display, the route guidance unit 26 instructs the voice control unit 30 to generate a voice corresponding to the route guidance at the intersection. The voice control unit 30 reads the information stored in the voice storage unit 32 as digital data, converts the information into an analog signal, and drives the speaker 34. Then, a route instruction is given to the driver from the speaker 34, such as "about 300 m ahead *** intersection is to the left." This voice instruction is given every predetermined distance until the vehicle passes the intersection. For example, if you are driving on a road with two or more lanes,
The final guidance is given 300m before and the second 100m before. The guidance voices are stored in the voice storage unit 3
2 is stored as digital data for each phrase. Therefore, when outputting the guidance voice, a plurality of the guidance voices are read out, the phrases are synthesized, and the guidance voice is output from the speaker 34. The route guidance unit 26 detects the output timing of the guidance voice, and the voice control unit 30 performs a process for outputting the voice.

In the present embodiment, the screen of the display unit 28 is composed of a touch panel, and the input unit 19
Function as. That is, the driver can input data by touching the place name or the like displayed on the display unit 28. In addition, the input unit 19 has a menu key for returning to a menu screen for selecting a process such as inputting a destination or adjusting volume, a map key for displaying a map, a screen for displaying the current location, or A current location / guidance key for requesting guidance in that state, an air conditioner key for displaying an adjustment screen for an air conditioner, an audio key for displaying an adjustment screen for audio, and the like are provided.

Here, since the driver stops at a gas station or a store along the highway, if the driver voluntarily leaves the route,
My current position is off the planned route. Therefore,
The route deviation determination unit 26a of the route guidance unit 26 recognizes the deviation of the route from the comparison between the current position and the route. And
In this case, a control signal is supplied to the voice control unit 30 to stop unnecessary voice guidance.

FIG. 2 shows a processing flowchart of the route guidance control unit 26 and the voice control unit 30. First, it is determined whether or not the current position of the vehicle is on the route (S
101). As described above, this determination is made by the route deviation determination unit 26a by comparing the current position with the route. Then, if it is determined that the vehicle is located on the route, it is determined whether or not it is the audio output timing (S102), and if it is the audio output timing, the audio controller 30 is instructed to perform the above-described audio output processing. Is performed (S103).

On the other hand, when the current position of the vehicle is not on the route, that is, when the route is OFF, the route O is further added.
It is determined whether or not the state has changed from the N state to the route OFF state (S104). This determination is made by setting a flag according to the result of the previous determination of S101 and detecting the value of the flag. Then, when the route is changed from the route ON state to the route OFF state, that is, when the off course is detected, it is determined whether or not the voice is being output (S105), and if unnecessary voice is being output, the voice control is performed. Command the unit 30 to stop the voice guidance (S
106).

As described above, in this embodiment, it is determined whether or not the vehicle has deviated from the route, and when the deviance is detected, the voice guidance is unnecessary and the voice processing is stopped.
Even if the driver voluntarily deviates from the route, unnecessary voice does not flow from the speaker, and therefore comfortable navigation can be performed without giving the driver any discomfort.

[0021]

As described above, according to the vehicular navigation device of the present invention, unnecessary voice guidance is removed from the driver when the route is off, and the driver is not uncomfortable.
You can perform comfortable navigation.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment.

FIG. 2 is a processing flowchart of an embodiment.

[Explanation of symbols]

 10 map information storage unit 12 current position measurement unit 18 input unit 20 arithmetic control unit 26 route guidance unit 28 display unit 30 voice control unit 32 voice storage unit 34 speaker

Front page continued (72) Inventor Kiyohide Kato 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin AW Co., Ltd. (72) Toru Ito 1 Toyota-cho, Toyota City, Aichi Prefecture Toyota Automobile Co., Ltd. Within

Claims (1)

[Claims] 1. A vehicle navigation device that searches for a route to a destination and guides the route by voice and screen display at a branch point or the like, the present position detecting means for detecting the current position of the vehicle, and the current position. Comparing means for comparing the routes obtained by searching, and the route deviation detecting means for detecting the route deviation based on the comparison result by the comparing means, and the control means for stopping the route guidance by voice when the route deviation is detected. A vehicle navigation device comprising: