JPH08334374A - On board route guiding system - Google Patents

Abstract

PURPOSE: To provide an onboard route guiding system which can enable the driver of its own vehicle to smoothly drive the vehicle to a destination by obtaining the latest recommedable route when the drive deviates from a prescribed recommendable route. CONSTITUTION: An onboard route guiding transmits the starting point and destination nodes retrieved by the node retrieving section to a control center and receives a recommendable route from the control center to the destination and, at the same time, judges whether or not its own vehicle travels along the recommendable route. This system comprises a travel monitoring section which receives a new recommendable route again from the control center when the vehicle deviate from the recommended route, and a displaying means 6 which displays the new recommendable route received by the travel monitoring section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle route guide device for bidirectionally communicating with a control center to obtain information on a traveling route of a vehicle to a destination and guiding the vehicle to the destination.

[0002]

2. Description of the Related Art FIG. 13 is a block diagram showing a conventional vehicle-mounted route guiding apparatus disclosed in, for example, Japanese Patent Laid-Open No. 6-22976, in which 10 is a vehicle-mounted route guiding apparatus, which is a vehicle-mounted apparatus 12 of a vehicle. And a home device 14 provided outside the vehicle such as at home.

In the on-vehicle device 12, 18 is a global positioning system (GPS) receiver for detecting the position of the vehicle by receiving signals from a plurality of satellites, and 24 is an input device for an occupant to input a traveling destination of the vehicle. Is.

Reference numeral 22 is an information providing device for providing travel route guidance information to an occupant, and 16 is an in-vehicle controller for controlling the information providing device 22 for providing travel guidance information, the GPS receiver 18, and the like.

Further, 20 transmits the vehicle position and the destination input to the in-vehicle controller 16 to the home device 14, and also receives the travel route guidance information from the home device 14 via the home communication device 28 so as to be mounted in the vehicle. Controller 16
It is an in-vehicle radio that inputs to.

On the other hand, in the home device 14, 26
Is a home-side computer including a computer body 26A and route guidance software 26B, 28 is the home communication device, and 30 is a road information device that stores a road network and traffic regulations that are required to provide travel route guidance information. .

Reference numeral 32 denotes a traffic information acquisition communication device for acquiring the latest information from the traffic information service center via the communication circuit network.

Next, the operation will be described. First, when the destination is set by the input device 24 of the in-vehicle device 12 by the input operation of the occupant, the in-vehicle controller 16 causes the in-vehicle wireless device 2 to operate.
0 and the communication line between the home communication device 28 and
The GPS receiver 18 is made to detect the own vehicle position by calculation.

Then, the vehicle controller 16 transmits the vehicle position data (x, y) and the destination data (telephone number, etc.) to the home computer 26 via the vehicle radio 20 and the home communication device 28.

The home computer 26 receiving this
Searches for the optimum travel route from the vehicle position to the travel destination on the basis of each data of the road network and traffic regulation information and the latest traffic information, and creates information on the optimum travel route.

Then, the home-side computer 26 transmits the guide point information (distance direction to the guide point, traveling road name, scheduled report timing, etc.) to the in-vehicle controller 16 via the on-vehicle radio 20 and the home communication device 28. .

On the other hand, the in-vehicle controller 16 receiving this
Is displayed on the information providing device 22 and the travel route guidance information (for example, “2
Turn right at the Taisho intersection, which is km away. "and voice output). After that, since there is no need to provide information for a while, the communication line between the in-vehicle wireless device 20 and the home communication device 28 is disconnected in order to eliminate useless communication.

On the other hand, the in-vehicle radio 20 and the home communication device 2
When the communication line with 8 is opened, the in-vehicle controller 1
6 causes the GPS receiver 18 to detect the own vehicle position, and transmits this own vehicle position data to the home-side computer 26.

Upon receipt of this, the home side computer 26
Calculates whether or not the host vehicle is traveling on the guide route (optimum travel route), and when it is not traveling on the guide route, the home computer 26 sends the route deviation information to the vehicle controller 16. To transmit. In response to this, the vehicle controller 16 provides the route deviation information to the occupant by the character display and the voice output by the information providing device 22, and prompts the driver to correct the running.

In such a conventional on-vehicle route guidance device, when the vehicle deviates from the recommended route due to a driver's driving operation error, the driver drives the vehicle at his or her own discretion to make the recommended route. You will be asked to provide a recommended route from your current location to your destination by returning or performing an input operation to contact the control center again.

[0016]

Since the conventional on-vehicle route guidance device is constructed as described above, the starting point of the recommended route is limited to the effective point node. Must drive the vehicle at its own discretion, and the recommended route provided from the home device 14 side does not consider the traveling direction of the vehicle. Therefore, the provided recommended route is currently running. In the case of an oncoming lane on the road, there is also a problem that the driver must drive the vehicle on the oncoming lane based on his / her own judgment.

For this reason, if the driver is unfamiliar with the road, psychological anxiety increases due to sudden lack of appropriate guidance instructions, and the route is selected by the driver's own judgment. When the display device is frequently viewed or the input operation for re-communication with the home device 14 side is performed by the input device, the driving operation is neglected,
In the worst case, there were problems such as causing a traffic accident.

The present invention has been made to solve the above problems, and when the vehicle deviates from a predetermined guide route due to a driver's operation error, the optimum recommended route to the destination is obtained. Then, it aims at obtaining the vehicle-mounted route guidance apparatus which can implement | achieve the smooth driving | running drive to a destination, focusing on driving operation by this.

The present invention relates to the traveling direction of the vehicle from the vehicle side,
The objective is to obtain an in-vehicle route guidance device that can obtain an optimum recommended route from the control center to the destination based on the current position and the destination.

An object of the present invention is to provide an on-vehicle route guidance device that can reliably obtain supplementary route information from the current position to the starting point of the recommended route when the vehicle deviates from a predetermined guidance route.

An object of the present invention is to provide an on-vehicle route guidance device which can immediately obtain a supplementary route to a departure place of a recommended route even if a route instruction from the control center cannot be obtained.

An object of the present invention is to obtain an on-vehicle route guidance device which can obtain supplementary route information which does not become an oncoming lane by recalculation when both routes are oncoming lanes at a connection point between the recommended route and the supplementary route. And

An object of the present invention is to provide an in-vehicle route guidance device which can obtain supplementary route information by recalculation when a vehicle deviates from a supplementary route linked to a recommended route.

The present invention provides an in-vehicle route guidance device capable of obtaining an optimum new recommended route by re-communication with the control center rather than returning to a previously received recommended route when automatic communication is possible. To aim.

An object of the present invention is to obtain an on-vehicle route guidance device which can obtain an optimum new recommended route according to actual road traffic conditions.

It is an object of the present invention to obtain an in-vehicle route guidance device which allows a driver to return to a recommended route by input operation.

It is an object of the present invention to provide a vehicle-mounted route guidance device that makes it possible to recognize a route display by symbol or color, thereby facilitating the driver's route selection and contributing to safe driving.

[0028]

According to another aspect of the present invention, there is provided an on-vehicle route guidance apparatus, which refers to a map information storage means to select a node closest to the current position among the nodes existing in the traveling direction of the vehicle. A node search unit for searching as a departure node and a node closest to the destination as a destination node is provided, and the departure node and the destination node searched by the node search unit are transmitted to the control center. , The travel monitoring unit receives the recommended route from the control center to the destination, determines whether the vehicle is traveling on the recommended route, and if the vehicle deviates from the recommended route, , Again, the recommended route is received from the control center.

According to another aspect of the present invention, there is provided an in-vehicle route guiding apparatus, which transmits a traveling direction of a vehicle from an azimuth detecting section, a current position of the vehicle from the current position detecting section and a destination of the vehicle from an input section to a control center. Then, the travel monitoring unit receives the recommended route from the control center to the destination, determines whether the vehicle is traveling on the recommended route, and the vehicle deviates from the recommended route. Is to receive the recommended route from the control center again.

In the on-vehicle route guiding apparatus according to the third aspect of the present invention, when the vehicle is not traveling on the recommended route, the traveling monitoring unit determines the current position to the starting point of the recommended route based on the output of the map information storage means. The supplementary route is calculated.

In the on-vehicle route guiding apparatus according to the invention of claim 4, before the traveling monitoring unit receives the recommended route information from the control center, the traveling monitoring unit is caused to start the calculation of the supplementary route linked to the recommended route. It is a thing.

According to the fifth aspect of the present invention, there is provided an in-vehicle route guidance device, wherein at the connection point of the recommended route received by the traveling monitoring unit and the supplementary route linked to the recommended route calculated by the traveling monitoring unit, these two routes are opposite lanes. When the above relationship is satisfied, the traveling monitoring unit is caused to calculate a supplementary route that does not result in a relationship of an oncoming lane at the connection point.

In the in-vehicle route guiding apparatus according to the invention of claim 6, when the traveling monitoring unit detects that the vehicle is not traveling on the supplementary route, if the recommended route information on the supplementary route is not received, the above-mentioned The travel monitoring unit recalculates the supplementary route to the recommended route departure point.

According to the seventh aspect of the present invention, there is provided the vehicle-mounted route guidance device, which, when the traveling monitoring section detects that the vehicle is not traveling on a predetermined recommended route, calculates a return route capable of returning to the recommended route. Only when the route length of the return route is larger than the reference route length which is the threshold value, the control center is contacted to obtain a new recommended route.

In the on-vehicle route guiding apparatus according to the present invention, the traveling monitoring unit calculates the return route based on the road traffic information, and the return route length to be compared with the reference route length is weighted by the road traffic information. It was done like this.

In the in-vehicle route guiding apparatus according to the invention of claim 9, the input unit sets whether to communicate with the control center.

According to a tenth aspect of the present invention, there is provided an on-vehicle route guidance device, which includes a recommended route recommended by the control center and a supplementary route calculated by the travel monitoring unit, such as the color and shape of the symbol of the route displayed on the display means. It is designed to be different depending on the route.

[0038]

The on-vehicle route guiding device in the first aspect of the invention is
When the vehicle deviates from the recommended route recommended by the control center due to the driver's operation error, the vehicle automatically communicates with the control center to obtain a new recommended route from around the vehicle's current position to around the destination. , Enable screen display.

According to another aspect of the present invention, there is provided an in-vehicle route guidance device, wherein when the vehicle deviates from a recommended route determined by the control center based on the traveling direction of the vehicle from the vehicle side, the current position of the vehicle, and the destination of the vehicle, It automatically communicates with the control center to obtain the recommended route from the control center again and enable screen display.

In the in-vehicle route guidance device according to the third aspect of the present invention, the supplementary route from the current position to the starting point of the recommended route can be displayed on the screen so that the current traveling direction of the vehicle is valid. To

In the in-vehicle route guidance device according to the invention of claim 4, the travel monitoring unit immediately calculates the supplementary route to the departure point of the recommended route without waiting for the information of the recommended route to be returned from the control center. To enable screen display.

In the on-vehicle route guiding apparatus according to the invention of claim 5, when the traveling monitoring unit receives the recommended route from the control center, if the two routes are in the opposite lane relationship at the connection point between the recommended route and the supplementary route. , The supplementary route that does not have the relationship of the oncoming lane is recalculated and the result can be displayed on the screen.

According to the sixth aspect of the present invention, the on-vehicle route guidance device recalculates the supplementary route when the traveling monitoring unit deviates from the supplementary route related to the recommended route before receiving the recommended route from the control center. The result can be displayed on the screen.

In the on-vehicle route guiding apparatus according to the invention of claim 7, when the return route length is larger than the reference route length, the traveling monitoring unit travels the return route and returns to the recommended route received in the past. It is judged that it is more effective to re-contact the control center and input a new recommended route from the current position of the vehicle, and based on the point data from the control center, the departure of the recommended route closest to the current position is started. Search for a place and make it visible.

In the on-vehicle route guidance device according to the invention of claim 8, the traveling monitoring unit calculates the return route based on the map information and the road traffic information, and the route length is compared with the reference route length such as traffic congestion. It is possible to display a return route that more closely matches the actual situation by weighting it by estimating how many times the actual route length according to the traffic information.

According to the ninth aspect of the present invention, the in-vehicle route guidance device enables the operator to set whether or not to automatically communicate with the control center by operating the input means. If the driver does not wish to do so, communication is not performed. , Make it possible to reduce communication charges and information provision charges.

According to the on-vehicle route guidance device of the tenth aspect of the present invention, the recommended route where the main road is provided and the supplementary route and the return route where the narrow street may also be provided can be identified by the symbol color, shape and the like. And warn the driver to drive more safely when traveling on the supplementary route or the return route.

[0048]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an on-vehicle route guiding apparatus according to an embodiment of the present invention. In the figure, 1 is a communication unit that sends and receives data to and from a control center (corresponding to the home device 14), 2a is a map information storage medium in which map data is stored, and 2b is a memory that reads map information from the map information storage medium 2a. In the medium reproducing unit, the map information storage medium 2
A and the storage medium reproducing unit 2b constitute the map information storage means 2.

Reference numeral 3 denotes an azimuth detector for detecting the traveling direction of the vehicle, and 4 denotes a vehicle based on the global positioning system signal, which is a radio navigation system using an artificial satellite, and the output of the map information storage means 2. It is a current position detection unit that detects the current position.

Reference numeral 5a is a guide route setting unit, which refers to the map information storage means 2 and retrieves the node closest to the current position among the nodes existing in the traveling direction of the vehicle as a departure point node. , A node search unit that searches for a node closest to the destination as a destination node, and transmits the origin node and the destination node searched by the node search unit to a control center, and the control center transfers the destination node to the destination. Along with receiving the recommended route to reach, it is judged whether or not the vehicle is traveling on the recommended route, and if the vehicle deviates from the recommended route, the vehicle receives the recommended route from the control center again. It consists of a monitoring unit.

Reference numeral 6 is a display means, which is a display unit 6a for updating and displaying the guide route, the current position of the vehicle, the traveling direction, etc. on the same screen as the map image, and a display control unit 6b for controlling the display unit 6a. Consists of.

Reference numeral 7 is a display unit 6a for inputting destination information of the vehicle.
This is an input unit for scrolling the map image displayed on the screen, changing the scale, and so on.

Next, the operation will be described with reference to the flowchart of FIG. First, when the information related to the destination is input by the input unit 7, the node search unit of the guide route setting unit 5a is operated based on the point data authorized by the control center read from the map information storage unit 2. A point node closest to the current position and a point node closest to the destination, which validates the traveling direction of the vehicle, are searched (step ST101).

These point data, together with the preset vehicle identification number, are sent to the control center by the communication unit 1 at the control center (hereinafter referred to as the recommended route) and the destination (hereinafter referred to as the recommended route). Is transmitted (step ST102).

The control center calculates the recommended route from the recommended route starting point to the recommended route destination based on the latest collected road traffic information, and assigns numbers to the road sections (each oncoming lane), for example. As a data string using the selected road link, the required time and road traffic information data are returned.

The recommended route data and the like are received by the communication unit 1 (step ST103) and stored in the guide route setting unit 5a. Then, the current position detection unit 4 detects the link on which the vehicle is traveling by using, for example, a map matching method.

Further, the display means 6 maps the current position, traveling direction and recommended route of the vehicle on the basis of the outputs of the map information storage means 2, azimuth detecting section 3, current position detecting section 4 and guide route setting section 5a. It is displayed on the image, for example, as shown in FIG. 3 (step ST104).

In FIG. 3, a black triangle mark A with a circle indicates the current position of the vehicle, and the tips of the circled corners indicate the traveling direction of the vehicle. In addition, B is the recommended route departure point, F is the recommended route destination, and the road along the black triangle from B to C to D to E to F is the recommended route.

Further, after the traveling monitoring unit of the guide route setting unit 5a detects in step ST105 that the road link on which the vehicle is currently traveling is one of the recommended route links, the link on which the vehicle is currently traveling continues. It continues to detect whether or not it is the recommended route link (step ST106).

When the vehicle approaches the intersection, when the running monitor of the guide route setting unit 5a determines that the currently running link is the recommended route link, the display unit 6a
Displays a simple figure and gives the driver of the vehicle an instruction to proceed at the intersection.

Further, the traveling monitoring unit of the guide route setting unit 5a detects in step ST106 that the currently traveling link is not the recommended route link, and in step ST107 detects the link including the point node of the recommended route destination. When it is detected that the vehicle has not finished traveling, it is determined that the vehicle has deviated from the route.

Based on this judgment, the recommended route departure which is the closest point to the current position where the traveling direction of the vehicle is valid is selected from the point data authorized by the control center read from the map information storage means 2. A new place is searched (step ST108).

At this time, the communication section 1 transmits the recommended route departure place to the control center together with the destination data of the recommended route and the like (step ST102).

Then, when the new recommended route data is returned from the control center, the display unit 6a displays the new recommended route as shown in FIG. 4, for example.

In FIG. 4, although the vehicle travels along the recommended route in FIG. 3 and the route from intersection C to D at the intersection C is recommended, the vehicle has traveled in the H direction. Re-contact with the control center with the point of departure as H, and the new recommended route returned is H →
An example of displaying E → F is shown.

When it is determined in step ST107 that the traveling monitoring unit of the guide route setting unit 5a has finished traveling on the road link including the point node of the recommended route destination, it is determined that the vehicle has reached the destination. The processing procedure ends.

Further, in step ST107, each time the traveling monitoring unit of the guide route setting unit 5a detects that the traveling of the road link including the point node of the recommended route destination is not completed, the process proceeds to step ST102 as described above. Return Repeat the above procedure.

By providing a voice signal output means for synthesizing and outputting a voice signal, each information transmission timing such as a progress instruction at an intersection, the fact that the guidance route has deviated, the fact that a new guidance route has been set and the display has been completed, etc. It is possible to display the information on the display section 6a and to transmit information to the driver by voice.

Further, the driver transmits the raw coordinates of the starting point and the destination input by the input unit 7 to the control center, and the control center sets the recommended route starting point B and the recommended route destination F. You may.

As described above, even if the driver deviates from the recommended route due to an operation error, a new recommended route from the vicinity of the current position to the destination that automatically validates the traveling direction of the vehicle is automatically obtained and displayed on the screen. As a result, the driver can concentrate on the driving operation and the traveling safety of the vehicle is not deteriorated.

In the above embodiment, the case in which the recommended route from the control center to the destination is transmitted to the vehicle side based on the departure node and the destination node searched by the node detecting section has been described. Detection unit 3
The recommended route to reach the destination may be transmitted to the vehicle side based on the traveling direction of the vehicle from, the current position of the vehicle from the current position detection unit 4, and the destination of the vehicle input by the input unit 7. The same effect as that of the above embodiment is obtained.

Example 2. 5 is a block diagram showing an in-vehicle route guiding apparatus according to another embodiment of the present invention.
The same components as those shown in are denoted by the same reference numerals, and the duplicated description will be omitted. In this embodiment, when it is detected that the vehicle has the same function as the guide route setting unit 5a of the first embodiment and the vehicle is not traveling on a predetermined guide route, the recommended route is output based on the output of the map information storage means 2. A guide route setting unit 5b (node search unit, travel monitoring unit) for calculating a supplementary route to the departure place is provided. FIG. 6 is a flow chart showing the processing procedure of this embodiment.

Next, the operation will be described. In this embodiment, after executing the processing of steps ST201 and 202 corresponding to the processing equivalent to the processing of steps ST101 and 102 described in the first embodiment, the guidance is performed based on the map information read from the map information storage means 2. The travel monitoring unit of the route setting unit 5b calculates an optimum supplementary route from the vicinity of the current position where the current traveling direction of the vehicle is valid to the recommended route departure point (step ST203), and the display unit 6a displays it as shown in FIG. 7, for example. It is displayed (step ST204).

In FIG. 7, a black triangle mark A with a circle indicates the current position of the vehicle, and the tips of the circled corners indicate the traveling direction of the vehicle. B is the recommended route departure point, and the white triangle mark from A to B is the supplementary route.

When the recommended route link string data is received from the control center (step ST205), the traveling monitoring unit of the guide route setting unit 5b determines that the recommended route and the calculated supplementary route are in the opposite lane relationship at the connection point. It is determined whether or not there is the map information (step ST
206).

As this method, for example, the map information storage medium 2a is stored in advance so that the links having the relationship with the oncoming lane of each road link can be searched, and when the vehicle travels on the guide route as planned. It may be determined whether the last link of the supplementary route corresponds to the oncoming lane link of the first link of the recommended route.

Then, when there is an oncoming lane, a supplementary route that does not become an oncoming lane, that is, a link other than the final link of the supplementary route becomes the final link of the supplementary route is recalculated (step ST207). For example, it is displayed on the display unit 6a as shown in FIG. 8 (step ST20).
8).

In FIG. 8, since the recommended route B → C is provided to the supplementary route A → B of FIG. 7, the supplementary route E → B → F → G which does not have the relationship of the oncoming lane at the departure place B.
→ H → B is recalculated and displayed.

Note that the recommended route is provided with a main line, whereas the supplemental route is a route from the current position of the vehicle to the recommended route, and therefore a narrow street may also be guided as a route.

Therefore, as shown in FIG. 8, the recommended route and the supplementary route can be discriminated by the color, shape, etc. of the symbol, so that the driver can be alerted to pay particular attention to safe driving when traveling on the supplementary route.

Further, the traveling monitoring unit of the guide route setting unit 5b continues to drive the current route after detecting in step ST209 that the road link on which the vehicle is currently traveling is either the recommended route link or the supplementary route link. It continues to detect whether the existing road link is a recommended route link or a supplementary route link (step ST210).

At the intersections on the recommended route and the supplementary route, as in the case of the first embodiment, the progress instruction at the intersections is given by a simple graphic display.

Then, the traveling monitoring unit of the guide route setting unit 5b detects in step ST210 that the road link currently traveling is neither the recommended route link nor the supplementary route link, and in step ST211, the recommended route purpose. When it has not been detected that the link including the point node on the ground has been traveled, it is determined whether or not automatic communication with the control center preset by the occupant through the input unit 7 is possible (step ST212).

As a result of this judgment, when the automatic communication setting is possible, the node searching unit of the guide route setting unit 5b determines that the vehicle is included in the point data read from the map information storage unit 2 and authorized by the control center. The recommended route starting point, which is the closest point to the current position that makes the traveling direction of the vehicle valid, is newly searched (step ST213), and then step ST
It returns to the procedure after 202.

On the other hand, if the automatic communication setting is denied in step ST212, it is determined that the driver does not desire the new recommended route and the new supplementary route, and the processing procedure is ended.

Further, in step ST211, when the traveling monitoring unit of the guide route setting unit 5b detects that the traveling of the road link including the point node of the recommended route destination is completed, it is determined that the vehicle has reached the destination. The processing procedure ends.

Further, when the automatic communication setting is possible, in step ST211, every time the traveling monitoring unit of the guide route setting unit 5 b detects that the vehicle is not traveling on the road link including the point node of the recommended route destination, As described above, the process returns to step ST202 and the subsequent processes are repeated.

The running monitoring unit of the guide route setting unit 5b is configured to calculate the supplementary route based on the road information stored and received along with the map information and the recommended route information data from the control center. It is also possible.

Further, a voice signal output means for synthesizing and outputting a voice signal is provided, and a progress instruction at an intersection, a fact that the guidance route has deviated, a fact that a new guidance route has been set and the display has been completed, etc. are displayed at each information transmission timing. It is also possible to display the information on the section 6a and to transmit information to the driver by voice.

It is also possible that the driver inputs whether to communicate with the control center each time in step ST212.

As described above, when the driver deviates from the predetermined guide route due to an operation error, the supplementary route and the recommended route from the periphery of the current position to the destination, which automatically validates the traveling direction of the vehicle, are provided. . Therefore, the driver can concentrate on the driving operation and the traveling safety of the vehicle is not deteriorated.

Further, the driver can determine that the vehicle is traveling on a supplementary route where a narrow street may be provided, depending on the shape and color of the symbol, and try to drive more safely.

Further, since it is possible to set whether or not to communicate with the control center, it is possible to avoid unnecessary communication and consumption of communication fee and information providing fee.

Embodiment 3 FIG. 9 is a block diagram showing an in-vehicle route guiding apparatus according to another embodiment of the present invention.
The same components as those shown in FIG. 2 are designated by the same reference numerals, and the duplicated description will be omitted. In this example,
A return route having the same function as the guide route setting unit 5b of the second embodiment and returning to the guide route based on the output of the map information storage means 2 when it is detected that the vehicle is not traveling on a predetermined guide route. And a guide route setting unit 5 for determining whether or not the route length of the return route is larger than the reference route length.
c (node search unit, travel monitoring unit) is provided. Also,
FIG. 10 is a flowchart showing the processing procedure of this embodiment.

Next, the operation will be described. In this embodiment, steps ST301 to ST304 of FIG. 10 execute the same processes as steps ST201 to ST204 of the second embodiment.

Then, when the node search unit of the guide route setting unit 5c detects in step ST305 that the recommended route has not been received and that the currently running link is not the supplementary route link in step ST306, for example, When the vehicle continues to run in FIG. 7 described in 2 and becomes as shown in FIG. 11, the supplementary route from the current position to the departure point of the recommended route is recalculated so that the current traveling direction of the vehicle is valid (step ST307), display section 6a
Is displayed as shown in FIG. 12, for example.

This processing procedure is repeated until the recommended route is received from the control center. In FIG.
When it is detected in step ST305 that the road along the white triangles from C → D → E → F → B indicates the recalculated supplementary route and the recommended route is obtained, step ST30
Then, the processing procedure from 8 onward is performed.

Steps ST308 to ST313
Is step ST206 to step ST211 of the second embodiment.
Perform processing equivalent to. However, ST step 31
1. In step ST312, it is also detected whether the currently traveling link is a recommended route link, a supplementary route link, or a return route link described later.

Further, in step ST312, the traveling monitoring unit of the guide route setting unit 5c detects that the road link currently traveling is not a recommended route, a supplementary route, or a return route.

Further, in step ST313, when it is detected that the link including the destination point node of the recommended route has not ended, it is determined that the vehicle has deviated from the route, and the map information storage means 2 outputs the result. Based on this, a return route that can return to the recommended route is calculated (step ST31).
4).

Next, the traveling monitoring unit of the guide route setting unit 5c determines whether or not the automatic communication setting is possible based on whether or not the automatic communication with the control center is preset by the passenger through the input unit 7. (Step ST315),
If yes, it is determined whether the set return path length X is larger than a preset reference path length Xr (step ST316).

When X is larger than Xr by this judgment, rather than traveling on the return route and returning to the recommended route received in the past, the control center is re-contacted to establish a new recommended route from the current position of the vehicle. It is judged that it is more effective to obtain it.

Further, based on this judgment, the map information storage means 2
The starting point of the recommended route, which is the closest point to the current position in which the traveling direction of the vehicle is valid, is newly searched from the point data permitted by the control center read from (step ST317). Step ST302
Return to the procedure below.

In step ST315, when the automatic communication setting with the control center is not set, it is determined that the driver does not want to provide information on the new recommended route,
The driver is informed of the return route calculated in step ST314.

In step ST316, when the set return route length X is smaller than the preset reference route length Xr, the control center is re-contacted to obtain a new recommended route around the current position of the vehicle. Rather, it is determined that it is more effective to travel on the return route and return to the recommended route that has already been obtained, and the driver is provided with the return route calculated in step ST314.

Further, the return route calculated in step ST314 is calculated based on the map information read from the map information storage means 2 and the stored road traffic information, and the route length X to be compared with the reference route length Xr is For example, α times the actual route length (α ≧
If it is weighted by the road traffic information, for example, by estimating 1), the determination result of step ST316 more closely matches the actual situation.

Further, in step ST313, when the traveling monitoring unit of the guide route setting unit 5c detects that the traveling of the road link including the point node of the recommended route destination is completed, it is determined that the vehicle has reached the destination. The processing procedure ends.

Furthermore, when the traveling monitoring unit of the guide route setting unit 5c determines in step ST316 that the return route length X is greater than the reference route length Xr, the process returns to step ST302 and the above procedure is repeated.

Further, whether or not the automatic communication setting is set, or even if the automatic communication setting is possible, the traveling monitoring unit of the guide route setting unit 5c determines in step ST316 that the return route length X is less than or equal to the reference route length Xr. When step ST310
Return to and repeat the above procedure.

The guide route setting unit 5c can be configured to set the supplementary route based not only on the map information but also on the road traffic information.

Further, a voice signal output means for synthesizing and outputting a voice signal is provided, and a progress instruction at an intersection, a fact that the guidance route has deviated, a fact that a new guidance route has been set and the display has been completed, etc. are displayed at each information transmission timing. It is also possible to display the information on the section 6a and to transmit information to the driver by voice.

Further, it is also possible that the driver inputs each time whether or not to communicate with the control center in step ST315.

In this way, when the driver deviates from the predetermined guidance route due to an operation error, information is provided about a return route that can return to the guidance route with the vicinity of the current position as the starting point, or supplement to the destination. Since the route and the recommended route are provided to the driver, the driver can concentrate on the driving operation, and thus the traveling safety of the vehicle is not deteriorated.

Further, by distinguishing the supplementary route which may provide a narrow street from other routes depending on the shape and color of the symbol, the driver should discriminate this and try to maintain safe driving. You can

Only when it is determined that the calculated return route is not valid, the recommended route can be newly obtained by re-contacting with the control center.

Furthermore, it is possible for the driver to set whether or not to automatically communicate with the control center.
It is possible to avoid wasting communication charges and information provision charges by performing unnecessary communication.

[0117]

As described above, according to the invention of claim 1, the node closest to the current position among the nodes existing in the traveling direction of the vehicle is referred to as the departure point node by referring to the map information storage means. And a node search unit that searches the node closest to the destination as the destination node, and transmits the departure node and the destination node searched by the node search unit to the control center and controls them. The travel monitoring unit receives the recommended route from the center to the destination, determines whether the vehicle is traveling on the recommended route, and when the vehicle deviates from the recommended route, the Since it is configured to receive the recommended route from the control center, when the vehicle deviates from the predetermined recommended route due to the driver's operation mistake, it will reach the destination. Of the latest of the recommended route, this way there is an effect that can achieve smooth operation traveling to a destination while concentrating on driving operation.

According to the second aspect of the present invention, the traveling direction of the vehicle from the azimuth detecting section, the current position of the vehicle from the current position detecting section and the destination of the vehicle from the input section are transmitted to the control center, and the control is performed. The travel monitoring unit receives the recommended route from the center to the destination, determines whether the vehicle is traveling on the recommended route, and when the vehicle deviates from the recommended route, Since it is configured to receive the recommended route from the control center, there is an effect that it is possible to guide the vehicle according to the recommended route obtained from the traveling direction of the vehicle, the current position, and the input destination. .

According to the invention of claim 3, when the vehicle is not traveling on the recommended route, the supplementary route from the current position to the starting point of the recommended route is calculated based on the output of the map information storage means. Therefore, when the vehicle deviates from the predetermined guide route, the supplementary route information from the current position to the departure point of the recommended route can be reliably obtained.

According to the invention of claim 4, before the communication unit receives the recommended route information from the control center, the travel monitoring unit of the guide route setting unit is caused to start the calculation of the supplementary route linked to the recommended route. Therefore, even if the route instruction from the control center cannot be obtained, the supplementary route to the departure point of the recommended route can be immediately obtained.

According to the fifth aspect of the present invention, at the connection point of the recommended route received by the traveling monitoring unit and the supplementary route linked to the recommended route calculated by the traveling monitoring unit, these two routes have a relationship of oncoming lanes. At this time, since the traveling monitoring unit of the guide route setting unit is configured to calculate the supplementary route that does not have the relationship of the oncoming lane at the connection point, both routes are opposite lanes at the connection point of the recommended route and the supplementary route. In this case, there is an effect that supplementary route information that does not result in an oncoming lane can be obtained by recalculation.

According to the invention of claim 6, when the traveling monitor of the guide route setting unit detects that the vehicle is not traveling on the supplementary route, the communication unit has not received the recommended route information related to the supplementary route. In that case, since the travel monitoring unit of the guide route setting unit is configured to recalculate the supplementary route to the departure point of the recommended route, when the vehicle deviates from the supplementary route linked to the recommended route, the supplementary route information is displayed. There is an effect that can be obtained by recalculation.

According to the seventh aspect of the present invention, when the traveling monitoring unit of the guide route setting unit detects that the vehicle is not traveling on the predetermined guide route, a return route capable of returning to the guide route is calculated, Only when the route length of the return route is larger than the reference route length as the threshold value, the communication unit is configured to automatically communicate with the control center to obtain a new recommended route, so automatic communication is possible. In this case, there is an effect that an optimal new recommended route can be obtained by re-communication with the control center rather than returning to the previously received recommended route.

According to the invention of claim 8, the travel monitoring unit of the guide route setting unit calculates the return route based on the road traffic information, and the return route length to be compared with the reference route length is weighted by the road traffic information. Since it is configured to do so, there is an effect that it is possible to obtain a return route according to actual road traffic conditions.

According to the ninth aspect of the present invention, since the input unit is configured to set whether or not to communicate with the control center through the communication unit, it is possible to obtain the return route received in the past by the input operation. There is an effect that the return to the recommended route can be implemented by the driver's will.

According to the tenth aspect of the invention, the recommended route recommended by the control center and the supplementary route calculated by the travel monitoring unit of the guide route setting unit are used for the color and shape of the symbol of the route displayed on the display means. Since it is configured to be different for the return route, by making it possible to recognize the route display by symbol or color, it is easy for the driver to select the route,
It has the effect of contributing to safe driving.

[Brief description of drawings]

FIG. 1 is a block diagram showing an in-vehicle route guidance device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a vehicle guidance procedure by the vehicle-mounted route guidance device of FIG.

FIG. 3 is an explanatory diagram showing a display screen of the vehicle-mounted route guidance device of FIG. 1.

FIG. 4 is an explanatory diagram showing another display screen in the vehicle-mounted route guidance device in FIG. 1.

FIG. 5 is a block diagram showing an in-vehicle route guidance device according to another embodiment of the present invention.

6 is a flowchart showing a vehicle guidance procedure by the vehicle-mounted route guidance device of FIG.

FIG. 7 is an explanatory diagram showing a display screen of the vehicle-mounted route guidance device of FIG.

FIG. 8 is an explanatory diagram showing another display screen in the vehicle-mounted route guiding apparatus of FIG.

FIG. 9 is a block diagram showing an in-vehicle route guidance device according to another embodiment of the present invention.

10 is a flowchart showing a vehicle guidance procedure by the vehicle-mounted route guidance device of FIG.

FIG. 11 is an explanatory diagram showing a display screen of the vehicle-mounted route guidance device of FIG. 9.

FIG. 12 is an explanatory diagram showing another display screen in the vehicle-mounted route guidance device in FIG. 9.

FIG. 13 is a block diagram showing a conventional vehicle-mounted route guidance device.

[Explanation of symbols]

2 map information storage means, 3 azimuth detection section, 4 current position detection section, 5a, 5b, 5c guidance route setting section (node search section, travel monitoring section), 6 display means, 7 input section.

Claims (10)

[Claims] 1. An azimuth detecting unit for detecting a traveling direction of a vehicle, a current position detecting unit for detecting a current position of the vehicle,
With reference to the input unit for inputting the destination of the vehicle, the map information storage unit for storing map information, and the map information storage unit, the node existing in the traveling direction of the vehicle is closest to the current position. A node search unit that searches for a node as a departure node and a node closest to the destination as a destination node, and transmits the departure node and the destination node searched by the node search unit to the control center. The recommended route from the control center to the destination is received, and it is determined whether the vehicle is traveling on the recommended route.If the vehicle deviates from the recommended route, the A display that displays the recommended route received from the control center and the latest recommended route received by the above-mentioned drive monitoring unit. Vehicle navigation system that includes a stage. 2. An azimuth detecting unit for detecting a traveling direction of the vehicle, a current position detecting unit for detecting a current position of the vehicle,
An input unit for inputting a destination of the vehicle, a map information storage unit for storing map information, a traveling direction of the vehicle detected by the azimuth detection unit, a current position of the vehicle detected by the current position detection unit, and The destination of the vehicle input by the input unit is transmitted to the control center, the recommended route from the control center to the destination is received, and whether or not the vehicle is traveling on the recommended route is received. If it is determined that the vehicle deviates from the recommended route, a traveling monitoring unit that receives the recommended route from the control center again and a display unit that displays the latest recommended route received by the traveling monitoring unit are provided. In-vehicle route guidance device. 3. The traveling monitoring unit calculates a supplementary route from the current position to the departure place recognized by the control center based on the output of the map information storage means when the vehicle is not traveling on the recommended route. The in-vehicle route guiding device according to claim 1, wherein the in-vehicle route guiding device is provided. 4. The travel monitoring unit starts calculation of a supplementary route linked to the recommended route before the traveling monitoring unit receives the recommended route information from the control center. In-vehicle route guidance device. 5. The traveling monitoring when the recommended route received by the traveling monitoring unit and a supplementary route linked to the recommended route calculated by the traveling monitoring unit are connected to each other in an oncoming lane. The vehicle-mounted route guiding apparatus according to claim 4, wherein the unit calculates a supplementary route that does not have a relationship of an oncoming lane at the connection point. 6. When the traveling monitoring unit detects that the vehicle is not traveling on the supplementary route and the recommended route information regarding the supplementary route has not been received, the traveling monitoring unit determines whether or not the recommended route has started. The vehicle-mounted route guiding apparatus according to any one of claims 3 to 5, wherein the supplementary route is recalculated. 7. When the traveling monitor detects that the vehicle is not traveling on a predetermined recommended route, a return route capable of returning to the recommended route is calculated, and the route length of the return route is set as a threshold value. The vehicle-mounted vehicle according to any one of claims 1 to 6, wherein the traveling monitoring unit communicates with the control center to obtain a new recommended route only when the route length is larger than the reference route length. Route guidance device. 8. The travel monitoring unit calculates a return route based on road traffic information and weights the return route length to be compared with a reference route length with the road traffic information. 7. The in-vehicle route guidance device described in 7. 9. The in-vehicle route guiding apparatus according to claim 1, wherein the input unit sets whether to communicate with the control center. 10. The color or shape of the symbol of the route displayed on the display means is made different between the recommended route recommended by the control center and the supplementary route or return route calculated by the travel monitoring unit. The vehicle-mounted route guiding apparatus according to any one of claims 3 to 9.