JP3419309B2 - Route guidance device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route guidance device. 2. Description of the Related Art Conventionally, a route guidance device displays a recommended route on a display device, and when the vehicle approaches a branch point on the recommended route, the display device displays the right and left directions in advance in front of the branch point. It is known to provide voice guidance by a speaker. On the other hand, in an automatic toll collection (ETC) system which has been developed in recent years, an exit toll is required to guide a procedure at an exit tollgate on a toll road where the ETC system is installed. A roadside antenna is installed at a position on the near side by a specified installation distance from the place, and it communicates with in-vehicle equipment corresponding to the ETC system,
It has a function to display necessary guidance information on the display of the in-vehicle device and to provide voice guidance through a speaker. [0004] However, in the case of a vehicle in which a route guidance device and a vehicle-mounted device for an ETC system are arranged side by side, when approaching an exit tollgate on a toll road, the route guidance device side. The route guidance is presented by the display and the speaker,
In parallel with this, when communication between the on-board equipment for the ETC system and the roadside antenna for advance notice of the ETC system (hereinafter referred to as the roadside antenna for the ETC system) is started, E
Since the on-board equipment for the TC system independently presents route guidance for automatic toll collection, the route instruction on the route guidance device side and the on-board device side for the ETC system may be output simultaneously in some cases. There was a problem. [0005] The present invention has been made in view of such a conventional problem. If an on-vehicle device for an ETC system communicates with a roadside antenna for an ETC system and ETC information is being presented by a display or a speaker, By temporarily stopping the route guidance by the own device, it is possible to prevent information presentation by the ETC system from being performed by separate presentation means simultaneously with the route guidance by the own device, so that the occupant does not become confused in grasping the information. It is an object of the present invention to provide a route guidance device that can be used. According to the first aspect of the present invention, the position of the vehicle and the recommended route are superimposed on a map and displayed on a first display, and the course direction at a forward branch point is indicated by the first direction. (1) A route guidance device for displaying guidance on a display device and / or providing voice guidance using a speaker, receives a signal from a roadside antenna for an automatic toll collection system, and displays a guidance display based on the received signal. An input terminal for inputting a signal indicating that information is being presented from an in-vehicle device for an automatic toll collection system that outputs a signal notifying that information is being presented when a second display is used; Route guidance inhibiting means for stopping display on the first display and voice guidance by a speaker while a signal indicating that information is being presented is input from the system vehicle-mounted device; It is provided with. In the route guidance apparatus according to the first aspect of the present invention, the position of the vehicle and the recommended route are superimposed on the map and displayed on the first display unit at normal times, and the course direction at the front branch point is displayed on the first display unit. Guidance display or / and audio guidance by speaker. However, the vehicle-mounted device for the ETC system receives a signal from the roadside antenna for the ETC system, which is installed a predetermined distance before the toll road exit, and transmits information for the automatic toll collection procedure to the information presenting means of the vehicle-mounted device. If it comes to output, the signal notifying that the information is being presented is input from the input terminal, the signal notifying that the information is being presented from the in-vehicle device for the automatic toll collection system is input from the input terminal, and the signal is input. During this period, the display on the first display of the route guidance device and the voice guidance by the speaker are stopped. [0008] Thereby, particularly when approaching an exit tollgate on a toll road where an automatic toll collection system is installed, information presentation by the automatic toll collection system is performed by separate presentation means at the same time as route guidance by its own device. To prevent According to the first aspect of the present invention, when approaching an exit tollgate on a toll road where an automatic toll collection system is installed, information presentation by the automatic toll collection system is performed by the own device. By preventing the information from being presented by separate presentation means simultaneously with the guidance, the information for automatic toll collection and the information for route guidance can be presented in a form that the occupant can reliably grasp. An embodiment of the present invention will be described below in detail with reference to the drawings. 1 and 2 show the configuration of a route guidance device according to one embodiment of the present invention. The route guidance device 1 includes a GPS antenna 2 for receiving a signal from a GPS (Global Positioning System) satellite, and a map information storage device for reading map information stored in a large-capacity storage medium such as a CD-ROM or a DVD-ROM. 3. An information presenting unit 4 comprising a display 4A for displaying a map for route guidance and other necessary information, and a speaker 4B for providing voice guidance for route guidance and other necessary information, and various calculations for route guidance. It is composed of a navigation unit 5 that performs processing. The navigation unit 5 is provided with an input terminal 7 for inputting a signal A indicating that ETC information is being presented from an on-board device 6 for an ETC system, which will be described later. A route guidance control unit 8 for executing processing is provided. ETC for inputting signal A to input terminal 7
The on-vehicle equipment 6 for a system is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-350.
No. 908, which communicates with a roadside ETC antenna 9 installed a predetermined distance away from an exit tollgate on a toll road.
It comprises a TC antenna 10, an ETC control unit 11, an indicator for displaying information necessary for automatic toll collection by the output of the ETC control unit 12 of the ETC control unit 11, and a speaker for voice guidance. An information presentation unit 13 is provided. The route guidance control unit 8 incorporated in the navigation unit 5 of the route guidance device 1 of the present invention is shown in FIG.
The functional configuration is as shown in FIG. That is, the vehicle position detection unit 15 that detects the current position of the vehicle based on the reception signal of the GPS antenna 2 and the map information of a necessary area are read from the map information storage device 3, and the map information and the vehicle position detection are performed. The current position of the own vehicle on the map is determined by collating the own vehicle position B detected by the unit 15, the own vehicle position is displayed on the map of the display 4A so as to be superimposed on the map, and the recommended route searched in advance Is also displayed from the other map elements in a prominent manner to perform route guidance, and the recommended route calculated by the route guidance processing unit 19 is compared with the vehicle position B.
If a branch point exists ahead of the course, the display 4A indicates whether the course should be taken to the right or left, and the speaker 4
A route guidance processing unit 17 that provides voice guidance by B. The route guidance control unit 8 receives a signal A from the on-board equipment 6 for the ETC system via the input terminal 7, which is a characteristic part of the present invention, and performs the route guidance control based on a processing procedure described later. A route guidance prohibition determining unit 18 that determines whether route guidance by the device 1 is temporarily prohibited is provided. In addition, the route guidance processing unit 16 inputs the own vehicle speed signal and the azimuth signal by the gyro sensor together with the own vehicle position signal B in order to perform the route guidance more accurately, and the GPS antenna 2 receives the signal from the GPS satellite. Has a function of complementing the route guidance when it becomes impossible to receive the signal. Next, the operation of the route guidance apparatus having the above configuration will be described with reference to FIGS. GPS antenna 2 is GP
The signal from the S satellite is received and passed to the host vehicle position detecting unit 15 of the route guidance control unit 7, and the host vehicle position detecting unit 15 detects the current position B of the host vehicle in absolute coordinates such as latitude and route. The route guidance processing unit 16 displays a map based on the map information of the corresponding area read from the map information storage device 3 on the display unit 4A, and includes the recommended route from the departure point to the destination searched in advance in the area. And the corresponding position of the own vehicle position B detected by the own vehicle position detection unit 15 is displayed in a superimposed manner, and route guidance is performed. The route guidance processing unit 17 includes a route guidance processing unit 1
6. The recommended route information calculated in Step 6 is compared with the vehicle position B, and when a branch point is present ahead of the course, the display 4A indicates whether the course should be taken to the right or left, and the speaker 4B.
Voice guidance. In parallel with the route guidance and route guidance processing,
The route guidance prohibition judging unit 18 determines whether or not the signal A presenting the ETC information is input to the input terminal 7 by the route guidance processing unit 17 (at least the output thereof).
Is to be prohibited. With reference to the situation shown in FIG. 3, the processing operation of the route guidance prohibition judging section 18 will be described in more detail. Exit toll gate 4 on the recommended route of toll road 40
It is assumed that the current position of the own vehicle 42 is traveling by D from 1 before. (I) When the vehicle 42 is traveling on a toll road and approaches the exit tollgate due to route guidance, the signal from the roadside antenna 9 for the ETC system is sent to the ETC antenna 10 on the onboard equipment 6 for the ETC system. Until received, E
Since the TC system in-vehicle device 6 does not present the ETC information to the information presenting unit 13, the ETC information presenting signal A is not input to the input terminal 7 of the route guidance device 1. Therefore, the route guidance device 1 continuously performs the route guidance and the route guidance processing. (Ii) When the vehicle 42 enters the ETC information presentation section and the ETC antenna 10 of the ETC system on-board device 6 starts receiving a signal from the ETC system roadside antenna 9, the on-board device 6 The guidance to the ETC gate 43 is started together with the ETC procedure guide to the presentation unit 13. Therefore, if there is an output from the ETC control unit 11 to the information presentation unit 13, the signal A starts to be input from the ETC control unit 11 to the input terminal 7 on the route guidance device 1 side. When the signal A during the presentation of the ETC information starts to be input from the input terminal 7, the route guidance prohibition determining unit 18 instructs the route guidance processing unit 16 to prohibit the route guidance processing. When receiving the prohibition command, the route guidance processing unit 16 stops outputting route guidance to the display 4A and the speaker 4B. Thereby, while the in-vehicle device 6 for the ETC system is presenting the ETC information,
Give priority to ETC information presentation to avoid confusion of information. (Iii) When the own vehicle 42 passes through the ETC gate 43 and the information presenting signal A from the ETC system in-vehicle device 6 is no longer input to the input terminal 7 of the route guidance device 1, the course Release guidance prohibition. The above processing is shown in a flowchart in FIG. When the power is supplied to the route guidance device 1,
When a command to start route guidance by the route guidance control unit 8 is input, this routine starts, and starts a navigation (route guidance) operation so as to travel along the recommended route that has already been searched. A series of navigation processing is repeatedly executed (step S1). At the beginning of the navigation, it is determined whether the A signal is being input during the presentation of the ETC information to the input terminal 7 (step S2). If the A signal is not input, the route guidance and the route guidance processing are continued (step S3). . However, in step S2, the input terminal 7
If the A signal is input during ETC information presentation to
The route guidance process is stopped (step S4). After the route guidance processing is stopped, the input terminal 7
The stop of the route guidance process is continued until the signal A is not input during the presentation of the ETC information, and when the input of the signal A is stopped,
The route guidance process is restarted (steps S2 and S3). Thus, according to the route guidance apparatus of this embodiment, it is possible to avoid that the route guidance by the present route guidance apparatus and the information presentation of the on-board equipment for the ETC system are performed at the same time. Only the input terminal of the signal A indicating that the information is being presented on the ETC system side and the change of the processing program need to be added on the guidance device side. Therefore, even if the tollgate where the ETC system is installed is increased in the future, this function can be operated at the newly installed tollgate without updating the map information, and the same system can be used for a long time. Can be offered. In the above-described embodiment, the route guidance processing on the side of the route guidance device is temporarily stopped when the signal A presenting the ETC information is received. However, the present invention is not limited to this. Or in a route guidance device having a function of presenting a route at a fork ahead in a voice, the route guidance process itself is continued, the display is temporarily set to a sleep mode, or an audio signal output to a speaker is output. May be adopted, and there is no particular limitation as long as the output of the route guidance presenting means, which eventually becomes a man-machine interface, is stopped.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a hardware configuration according to an embodiment of the present invention. FIG. 2 is a block diagram showing a functional configuration of a route guidance control unit according to the embodiment. FIG. 3 is an explanatory diagram of a route guidance process according to the embodiment. FIG. 4 is a flowchart of a route guidance process according to the embodiment. [Description of Signs] 1 route guidance device 2 GPS antenna 3 map information storage device 4 information presentation unit 4A display unit 4B speaker 5 navigation unit 6 onboard equipment for automatic toll collection (ETC) system 7 input terminal 8 route guidance control unit 9 automatic Roadside antenna for toll collection (ETC) system 15 Own vehicle position detection unit 16 Route guidance processing unit 17 Route guidance processing unit 18 Route guidance inhibition determination unit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-14009 (JP, A) JP-A-10-31768 (JP, A) JP-A-9-319904 (JP, A) JP-A-9-09 116447 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01C 21/00 G07B 15/00 G07B 15/00 510 G08G 1/09 G08G 1/0969

Claims (1)

(57) [Claims] [Claim 1] The vehicle position and the recommended route are superimposed on a map.
Displayed on the first display, wherein the path direction in the forward branch point first
(1 ) In a route guidance device that displays guidance by a display device and / or provides voice guidance by a speaker , receives a signal from a roadside antenna for an automatic toll collection system.
Automatically display a guidance display based on the received signal.
When displaying information using the second display for the stem,
In-vehicle equipment for automatic toll collection system that outputs signals
From, an input terminal for inputting a signal indicating that information is being presented, and while the signal for notifying that information is being presented from the in-vehicle device for the automatic toll collection system is being input to the input terminal,
A route guidance device comprising: route guidance prohibiting means for stopping display on the first display and voice guidance by a speaker.