JPH05119699A - Navigation system - Google Patents

Abstract

PURPOSE:To recognize the selection designating conditions of a prescribed attribute object on a map. CONSTITUTION:Map data is read from a storing means 2 where map data adding road data and attribute object data are recorded and one, at least, of the present location or desired position of an own vehicle is displayed on the map in a navigation system. The system is provided with a designating means selectively designating the attribute object, a transmitting means 8 transmitting information which expressed the location of the prescribed attribute object designated by the designating means and a receiving means receiving information which expresses the location of the designated attribute object and, then, recognizably, at least, displays the location of the attribute object which is received by the receiving means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for displaying at least one of a current position and a target position of a vehicle on a map which is displayed on a screen, and in particular, data of attributes such as fire hydrants and station buildings together with road data. The present invention relates to a navigation device which is recorded in a storage means and is effective when a plurality of attributes are selectively used in a plurality of vehicles or a plurality of vehicles are selectively allocated to a plurality of attributes.

[0002]

2. Description of the Related Art A navigation device for displaying a map around the current position of a vehicle and the current position of the vehicle on the map at any time, or displaying a map around the destination position and the destination position on the map is practically used. Has been converted. In such a navigation device, map data including road data and attribute data is stored in advance in a storage medium such as a compact disk, and a vehicle direction sensor for detecting the traveling direction of the vehicle and rotation of wheels are detected. The position of the vehicle is obtained at any time based on the signals obtained from the wheel speed sensors, etc., and the map data corresponding to the area around the current position of the vehicle is selectively read out to display the current position on the map or designated. The map data corresponding to the vicinity of the target position is read and the target position is displayed on the map.

Furthermore, a navigation system is installed in a fire engine, and the hydrant position data is stored in advance in a storage medium as attribute data, and the position of the hydrant around the fire site is displayed on a map. In addition to prompt guidance to the fire scene by means of fire, it is considered to be useful for prompt fire extinguishing activities at the fire scene.

[0004]

However, when a plurality of fire hydrants near a fire site are selectively used by a plurality of fire trucks to carry out fire fighting activities, even if the position of the fire hydrant can be confirmed, it is already used. If so, it is necessary to search for another unused fire hydrant, and the conventional navigation device is not sufficient in this respect.

The present invention solves such a problem, and an object of the present invention is to provide a navigation device capable of confirming the selection and designation status of a predetermined attribute on a map.

[0006]

In order to solve the above-mentioned problems, the present invention reads the map data from the storage means in which the map data including the road data and the attribute data is recorded to read the current position or the purpose of the vehicle. In a navigation device that displays at least one of the positions on a map, a specifying unit that selectively specifies the attribute object, a transmitting unit that transmits information indicating the position of the predetermined attribute object specified by the specifying unit, And a receiving unit that receives information indicating the position of the attributed object, and at least the position of the attribute received by the receiving unit is displayed in a recognizable manner on the map.

[0007]

According to the present invention, the information indicating the position of the predetermined attribute specified by the own vehicle by the specifying means is transmitted by the transmitting means, and the information indicating the position of the attribute specified by another vehicle is the receiving means. Received by and displayed on the map. Therefore, it is possible to check the position of the predetermined attribute and the selection designation status on the map at a glance.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention. Hereinafter, an example in which a navigation system 100 is mounted on a fire engine and a fire hydrant is used as an attribute will be described. The system controller 1 is composed of a microcomputer (hereinafter, referred to as a microcomputer), creates map or display data of the current position of the vehicle based on various data from the operation keys 4, and displays the data via the drive circuit 5. By giving it to the device 6, the map and the current position of the vehicle are displayed. The map data storage unit 2 derives the map data to the communication bus 7 according to the instruction from the system controller 1. The location detection unit 3 transmits data indicating the current position and the traveling direction of the vehicle via the communication bus 7 at predetermined time intervals to the system controller 1
Give to. Further, the communication device 8 is another vehicle (mobile station) 9 equipped with the navigation device 100 having the same configuration.
Alternatively, information is transmitted to and from the base station 10.

The system controller 1 has an editing memory (not shown) for editing map data, and in response to the operation of the operation keys 4, the map displayed on the display 6 is scrolled. Initialize or modify the current position and destination position, and display the position and name of attribute objects such as fire hydrants and station buildings selectively with road data as a map on the display 6 or Processing such as enlargement and reduction is also performed.

Further, the system controller 1 switches the display form of the map in accordance with the operation of the fire hydrant mode key 41 provided as one of the operation keys 4, as described later.
The map data storage unit 2 is a compact disc (hereinafter, CD
CD-ROM2 on which map data is recorded
2. Decoder 23 that reads the map data recorded in CD-ROM 22, the decoder 23 is controlled by an instruction from the system controller 1 to read arbitrary data on the CD-ROM 22, and the system controller 1 is connected via the communication bus 7. And the CD given to the location detector 3
-ROM control microcomputer 21.

The location detection unit 3 detects the traveling direction of the vehicle and outputs a traveling direction signal, a geomagnetic sensor 32, a wheel speed sensor 33 that generates a pulse signal synchronized with the rotation of the wheels, an output of the geomagnetic sensor 32 and the wheel speed. After obtaining the movement vector of the vehicle from the output of the sensor 33 and integrating the movement vector to calculate the estimated vehicle position, the map data provided from the map data storage unit 2 is matched with the estimated vehicle position. The location calculation microcomputer 31 generates the vehicle position data and outputs the vehicle information data including the vehicle position data and the traveling direction signal to the system controller 1 every predetermined time (for example, 1 second).

Further, the communication device 8 has the antenna 81, the radio device 82, and the radio device 8 according to instructions from the system controller 1.
The wireless device control microcomputer 83 controls the transmission and reception of the data 2 and transmits the information to be transmitted to the base station 10 or another mobile station 9 or the information received from these to the system controller 1. Next, the operation of this embodiment will be described. FIG. 2 is a YAC showing the operation of the system controller 1.
It is a II chart.

When the navigation device 100 is activated,
First, in step S1, predetermined map data is read from the CD-ROM 22 and transferred to the aforementioned editing memory, and the display 6
A predetermined map is displayed on and the process proceeds to step S2. In step S2, whether any of the operation keys 4 has been operated for changing or enlarging / reducing the displayed map, initializing or correcting the current position or the target position, or selectively specifying the attribute. It is determined whether or not it is operated, step S
Processing corresponding to the operation key 4 operated in 3 is performed, and the process proceeds to step S4. If the operation key 4 has not been operated, the process directly proceeds to step S4.

Although the map data to be displayed on the display 6 and the map data around it are also read in the editing memory, the map data is updated by the operation of the operation keys 4, and the map data is read in the editing memory. Whenever it becomes necessary to update the map data, the corresponding map data is read from the CD-ROM 22 and transferred to the editing memory.

In step S4, the location detector 3
To new vehicle information (vehicle position data and heading signal)
If it is determined that vehicle information has been received, the map display of the display 6 is updated and, if necessary, based on the received vehicle position data and traveling direction signal. The map data in the editing memory is updated (step S5), and the process proceeds to step S6.

In step S6, it is determined whether the communication device 8 has received an instruction message from the base station 10 or another mobile station 9, and if an instruction message requesting transmission of vehicle information of the own vehicle is received, The vehicle information such as the vehicle position data and traveling direction signal of the vehicle is transmitted by the communication device 8 together with the vehicle number for identifying the vehicle (steps S7 and S8).
When the command message is received, the target position and the message are displayed corresponding to the command message, or when the position information of an attribute such as a fire hydrant selected by another mobile station 9 is received as described later, In order to display this on the map in a recognizable manner, it is temporarily stored in a memory (not shown) in the system controller 1 (steps S9 and S10).

Then, steps S2 to S10 are repeated thereafter. FIG. 3 is a detailed YACII chart of step S3 when it is determined that the fire hydrant mode key 41 has been operated in step S2 of FIG. Step R
In No. 1, whether or not the state before the fire hydrant mode key 41 is operated is the fire hydrant selection mode is determined by the state (0 or 1) of the flag F, and the fire hydrant selection mode, that is, when the flag F is 1. In step R2, the flag F is set to 0 to release the fire hydrant selection mode, and then step R
Move to 3. In step R3, as shown in FIG. 4, the hydrant selection screen in which the position where the fire hydrant is installed is displayed together with the selection number 61 and the operation area 62 of the infrared touch switch for selecting the selection number 61 on the map, respectively. Is cleared and the original map screen based on the road data and the vehicle marker 63 indicating the vehicle position is displayed on the display device 6.

On the other hand, when the fire hydrant selection mode is not set, that is, when the flag F is 0, the fire hydrant selection mode is set by setting the flag F to 1 in step R4, and the map screen of the display 6 is shown in FIG. Switch to the selection screen (step R5). At this time, the position of the fire hydrant is normally displayed in green, and as described below, the position of the fire hydrant selectively designated by the vehicle is displayed in red, and the position of the fire hydrant selectively designated by the other mobile station 9 is also displayed. The position of each is displayed in blue.

The location information (coordinate data on the map or selection number) of the fire hydrant selectively designated by another mobile station 9 is shown in FIG.
As described in step S10 in step S10, it is stored in a memory (not shown) in the system controller 1 as needed, and is read and displayed on the screen in a recognizable manner in step R5. In this way, in response to the operation of the fire hydrant mode key 41, the map screen displayed on the display 6 is switched to the fire hydrant selection screen as shown in FIG. And YA of FIG.
As shown in the CII chart, the selection number 61 of a predetermined fire hydrant used or used by the vehicle while the fire hydrant selection screen is displayed corresponds to the operation area 62 by the infrared touch switch provided as a part of the operation key 4. When it is specified by operating (step P1), the position of the fire hydrant with the specified number, that is, the leading circle mark of the selection number 61 in FIG. 4 is displayed in red (step P2).

Next, in step P3, the position information of the fire hydrant selected in step P1 is used as the coordinate data of the corresponding map or the fire hydrant selection number by the communication device 8 together with the vehicle number of the vehicle and the base station 10 or other mobile station 9. Send to. Then, in step P4, the flag F is set to 0 to cancel the fire hydrant selection mode, clear the fire hydrant selection screen, and display the original map screen on the display 6 (step P
5).

The base station 10 also has a map display system using a CD-ROM, and periodically receives vehicle data such as position data indicating the current position and traveling direction signals from each mobile station 9 to obtain a map. The position of each mobile station 9 is displayed on the top to monitor and control each mobile station 9. When it is desired to obtain information such as vehicle information from each mobile station 9, an instruction message requesting transmission of desired information is transmitted together with a vehicle number designating the mobile station 9.

Further, in the system in which the information of the fire hydrant selectively designated by the predetermined mobile station 9 is given to each of the other mobile stations 9 via the base station 10, the base station 10 sends the position information of the fire hydrant to the predetermined mobile station. When it is received from 9, the destination mobile station 9 is judged from the vehicle number, and the position information of the fire hydrant is transmitted to the other mobile stations 9 to inform that it has already been used.

In the present embodiment, the case where the navigation device is mounted on a fire engine and the fire hydrant is used as an attribute has been described, but the present invention is not limited to this. For example, the navigation device may include a plurality of taxis. It may be installed in a vehicle, and may be adopted in a system in which a station building, a park, a hotel, and the like are attributed to each of the attributes, and the availability of each of the attributes is selected on the vehicle side.

Further, the selective designation status of the attribute may be confirmed between the mobile stations 9 without going through the base station 10. Further, the method of recognizing the attribute is not limited to the color classification as in the present embodiment, and for example, a method of changing the brightness or a blinking display may be used.

[0025]

As described above in detail, according to the present invention, since the information indicating the position of the attribute designated by the other vehicle is displayed on the map, the position of the predetermined attribute and the selection designation status thereof are displayed. Can be checked at a glance on the map.

[Brief description of drawings]

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

FIG. 2 is a YACI showing the operation of the system controller 1.
I chart.

FIG. 3 is a detailed YACII chart of step S3 in FIG.

FIG. 4 is a diagram showing an example of a fire hydrant selection screen.

FIG. 5 is a YACII chart showing a selection process of a fire hydrant.

[Explanation of symbols]

 1 ... System controller 2 ... Map data storage unit 3 ... Location detection unit 6 ... Display device 8 ... Communication device 9 ... Mobile station 10 ... Base station 41 ... Fire hydrant Mode key 100 ... Navigation device

Claims (1)

[Claims] 1. A navigation device for reading out map data from a storage unit in which map data including road data and attribute data is recorded and displaying at least one of a current position and a target position of a vehicle on a map. Designating means for selectively designating an attribute object, transmitting means for transmitting information indicating the position of the predetermined attribute object designated by the designating means, and receiving means for receiving information indicating the position of the designated attribute object. A navigation device comprising: and displaying at least the position of the attribute received by the receiving means on a map so as to be recognizable.