JPH09147291A - Vehicle position display device and its communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive vehicle position display device of a comparatively simple constitution which has a wide range of display objects. SOLUTION: A mobile station 1 of the display device includes a GPS 11, a modem 12, a portable telephone set 13, and a controller 14 which totally controls the station 1. A base station 2 includes a portable telephone set 21, a modem 22, a mobile station position information display device 23 which shows the vehicle information including the present position of the vehicle, and a central processor 24 which totally controls the station 1. The station 1 is also provided with a discrimination means 15 which decides a data communication request given from the station 2, and a modem control means 16 which starts the modem 12 to start the data communication against the data communication request of the station 2 and then ends the modem 12 when the data communication is over. Thus the vehicle information including the vehicle position information are transmitted and received between both stations 1 and 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle position display device and a communication method therefor, and more particularly to a mobile station arranged in a vehicle and a base station communicating with the mobile station.
A mobile station position acquisition device that acquires the current position of the vehicle, a modem that modulates vehicle information including vehicle position information into communication data and demodulates communication data from the base station, communication equipment, and a controller that performs overall control. The base station includes a communication device, a modem for modulating information from the base station into communication data and demodulating the communication data from the mobile station into vehicle information including mobile station position data, and a current position of the vehicle. A mobile station position information display device for displaying vehicle information;
The present invention relates to a vehicle position display device including a central processing unit that performs overall control.

[0002]

2. Description of the Related Art Conventionally, as a communication method and a vehicle position display device for a vehicle position display device as described above, the own vehicle position is displayed on a display device on the own vehicle by using a self position acquisition means such as a GPS system. Navigation system or position information obtained by such a navigation system is data-communicated by a dedicated wireless telephone system to display the current positions of a plurality of vehicles at a base station, and each vehicle moves along a planned route. Something that can confirm whether or not is proposed.

[0003]

By the way, in such a vehicle position display device, since a large number of vehicles are targeted, the system configuration becomes complicated and expensive, or
The target area is relatively small, and
There is a problem that communication costs increase when the positions of long-distance trucks, which are mobile stations scattered all over Japan, are displayed by wireless communication at the base station.

Therefore, an object of the present invention is to provide a vehicle position display device and a communication method thereof which are low in price, relatively simple in configuration, and capable of displaying a wide display object such as in Japan. .

[0005]

As shown in FIG. 1, the means of the present invention for achieving the above object comprises a mobile station 1 arranged in a vehicle and a base station 2 communicating with the mobile station. The mobile station 1 communicates with the mobile station position acquisition device 11 that acquires the current position of the vehicle, the modem 12 that modulates the vehicle information including the vehicle position information into communication data, and demodulates the communication data from the base station. The base station 2 includes a device 13 and a controller 14 that controls the mobile station 1 as a whole, and the base station 2 modulates information from the communication device 21 and the base station into communication data and also transmits communication data from the mobile station to the mobile station position. A modem 22 for demodulating vehicle information including data, and a mobile station position information display device 2 for displaying vehicle information including the current position of the vehicle
3 and a central processing unit 24 for controlling the mobile station as a whole, the mobile station has a determination means 15 for determining that the communication from the base station is a data communication request; When the communication request is made, the modem is started to start the data communication, and when the data communication is finished, the modem control means 16 to stop the modem is provided, and the vehicle information including the vehicle position information is transmitted between the mobile station and the base station. It is a vehicle position display device which receives and transmits between.

In the vehicle position display device according to the present invention, the base station 2 is provided with the password sending means 25,
The mobile station 1 can be provided with a password collating means 17 for collating whether the password is legitimate and for prohibiting the transmission of the vehicle information when the password is improper.

Further, in the vehicle position display device according to the present invention, the mobile station 1 inputs vehicle information other than the vehicle position information to the modem 12, and an output device provided in the vehicle in response to a command from the base station 2. Can be provided with an auxiliary input / output device 18.

In the vehicle position display device according to the present invention, the auxiliary input / output device 18 transmits on / off information of the engine key switch of the vehicle as vehicle information, and the base station turns on the engine key switch of the vehicle. -Off information can be displayed as vehicle information.

Further, in the vehicle position display device according to the present invention, the mobile station comprises a backup secondary battery other than the vehicle battery and a power supply control means, and the power supply control means moves when the vehicle engine key is turned on. It is possible to supply electric power from the vehicle battery to the station and charge the backup secondary battery from the vehicle battery, while supplying electric power to the mobile station from the backup secondary battery when the vehicle engine key is off.

A communication method of a vehicle position display device for solving the above-mentioned problems in the present invention is a vehicle position display device in which a mobile station 1 arranged in a vehicle and a base station 2 communicating with the mobile station. The mobile station 1 includes a mobile station position acquisition device 11 that acquires the current position of the vehicle, a modem 12 that modulates vehicle information including vehicle position information into communication data, and demodulates communication data from the base station. , A communication device 13 and a controller 1 for controlling the mobile station 1 as a whole
4, the base station 2 includes a communication device 21, a modem 22 that modulates information from the base station into communication data and demodulates communication data from the mobile station into vehicle information including mobile station position data, and a vehicle. In a vehicle position display device including a mobile station position information display device 23 for displaying vehicle information including the current position of the mobile station and a central processing unit 24 for overall control of the mobile station, the mobile station communicates from a base station. When there is a request, it is determined that it is a data communication request, and when it is a data communication request, the modem is started up and data communication is started, and vehicle information including vehicle position information is transmitted / received to / from the base station. Then, after the data communication is completed, the communication method of the vehicle position display device in which the modem is deactivated.

Further, in the communication method of the vehicle position display device according to the present invention, the password can be exchanged between the base station and the mobile station, and the mobile station can transmit the vehicle information after the password verification.

Further, in the communication method for a vehicle position display device according to the present invention, the mobile station inputs vehicle information other than vehicle position information to the modem and transmits the vehicle information to the base station, and the mobile station is the vehicle. It is possible to receive data from a base station that drives an auxiliary output device provided in.

In the vehicle position display device communication method according to the present invention, the mobile station transmits ON / OFF information of the engine key switch of the vehicle as vehicle information, and the base station transmits the engine key switch of the vehicle. The on / off information of can be displayed as vehicle information.

According to the vehicle position display device of the present invention,
The mobile station determines the communication from the base station is a data communication request, and the mobile station starts the data communication by starting the modem when the data communication request is made, and the modem when the data communication is finished. Since the vehicle information including the vehicle position information is transmitted and received between the mobile station and the base station, a digital mobile phone and a mobile modem device are used as the communication means. Even if the portable modem device is battery-operated and the battery life of the device is relatively short, the modem device operates for the minimum time required for data communication. Yes, and the modem is controlled so that it does not operate during conversations other than data communication, so use a commercially available modem as the vehicle position display device without modification. It becomes possible.

Further, according to the present invention, by using the electronic map data stored in the commercially available GPS device and the GPS CD-ROM, the target area can be set from a wide area to a narrow area in Japan, and the digital portable telephone can be used. Along with the widening of the telephone service area and the reduction of charges, the vehicle position display device can be made inexpensive, the configuration is relatively simple, and the display target can be as wide as the whole of Japan.

Further, according to the present invention, the base station 2 is provided with the password sending means 25, and the mobile station 1 verifies whether the password is valid or not. Since the vehicle information such as vehicle position information is not transmitted in response to data transmission from an incorrect base station, confidentiality can be maintained.

Further, the mobile station 1 is provided with an auxiliary input / output device 18 for inputting vehicle information other than vehicle position information to the modem 12 and driving an output device provided in the vehicle in response to a command from the base station 2. In particular, the auxiliary input / output device 18 transmits the on / off information of the engine key switch of the vehicle as the vehicle information, and the base station transmits the on / off information of the engine key switch of the vehicle and the movement of the vehicle. The supply state of electric power to the station 1 can be displayed as vehicle information, and in this case, whether or not the vehicle is traveling can be instantly determined without providing a special sensor or the like.

In addition, by providing various sensors and an emergency switch on the auxiliary input / output device,
The presence / absence of passengers, the open / closed state of the door, and various traveling information of the vehicle (emergency signal such as traveling distance, speed, engine speed, engine state, etc.) can be transmitted as vehicle data, and the vehicle can be remotely managed.

Further, the auxiliary input / output device is equipped with various actuators, and a vehicle is operated by a door station to lock / unlock a door lock, start / stop an engine by operating an ignition switch, and forcibly disconnect a battery line according to a command from a base station. Remote control such as forced electric lock can be performed.

Further, according to the present invention, the mobile station is provided with a backup secondary battery other than the vehicle battery and a power supply control means, and the power supply control means determines whether the vehicle battery is supplied to the mobile station when the vehicle engine key is turned on. While supplying the electric power and charging the backup secondary battery from the vehicle battery, the electric power can be supplied from the backup secondary battery to the mobile station when the vehicle engine key is off, and the vehicle engine switch is turned off. Even in this state, the mobile station operates with the backup secondary battery, and even in such a case, vehicle information such as the vehicle position can be transmitted.
When the mobile station is driven by a backup secondary battery,
In order to minimize the power consumption, the mobile station may stop supplying power to the mobile station position acquisition device 11 that consumes a large amount of power. At this time, the position information of the mobile station is stored in the controller 14 immediately before the power supply is stopped,
The information may be used as the position information.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. First, the configuration of the vehicle position display device will be described.

The vehicle position display device, as shown in FIG.
It comprises a mobile station 1 arranged in a vehicle and a base station 2 communicating with the mobile station 1. Here, although a plurality of mobile stations 1 are normally provided, only one mobile station 1 is shown in FIG.

The mobile station 1 is a GPS device (receiver) 11 as a mobile station position acquisition device for acquiring the current position of the vehicle.
A battery-powered portable modem 12 for modulating vehicle information including vehicle position information into communication data and demodulating communication data from a base station; a digital mobile phone 13 as communication equipment; and a mobile station 1. And a controller 14 for performing overall control of. Here, the GSP device 11 may be a commercially available device, which receives radio waves from a plurality of artificial satellites with the antenna 20 and outputs current time and latitude / longitude data. Then, the determination means 15 for determining that the communication from the base station 2 is a data communication request, and when the data communication request is made, the modem is started to start the data communication, and when the data communication is finished, the modem is made to operate. As shown in FIG. 2, the modem control means 16 for shutting down and the password collation means 17 for collating whether the password is legitimate and prohibiting the transmission of the vehicle information when the password is improper are as shown in FIG. RO built in the microcomputer 31 arranged in the controller 14
It is realized by executing the program stored in M32. Further, in this example, the auxiliary input / output device 18 is connected to the engine key switch 19 of the vehicle and transmits ON / OFF information of the switch as vehicle information. Further, the on / off information may be recognized as an on state when power is supplied by a power plug connected to the cigarette lighter socket, and may be recognized as an off state when the power supply is lost.

Here, this digital mobile phone has received a so-called "direct number service" to which a plurality of calling numbers are added, and the ring tone can be switched when the direct number service is received. .

On the other hand, the base station 2 modulates the information from the digital portable telephone 21 which is a communication device and the base station 2 into communication data, and the communication data from the mobile station 1 includes vehicle information including mobile station position data. A modem 22 for demodulation, a mobile station position information display device 23 for displaying vehicle information including the current position of the vehicle, a computer 24 as a central processing unit for overall control of the mobile station, and a mouse connected to this computer. , An input device 26 such as a keyboard, a magnetic disk, C
A recording medium 27 such as a D-ROM and a password sending means 2
And 5. Here, the password sending means is
It is realized by a computer. A CD-ROM storing electronic map information is stored as a recording medium, and the input device 2
As shown in FIG. 9, the position of the mobile station, the position measurement time, the on / off information of the engine key switch of the vehicle, and the state of the battery of the mobile station modem are displayed according to the input data from 6.

Further, in the vehicle position display device according to the present invention, the mobile station 2 is supplied with electric power from the battery 40 of the vehicle, and the backup secondary battery 41 provided in addition to the battery 40 of the vehicle, And a power supply control means 42.

Next, the configuration of the mobile station 1 of the vehicle position display device according to this example will be described in detail. FIG. 2 is a block diagram showing the configuration of the mobile station 1.

In FIG. 2, 31 is the controller 14,
A microcomputer which operates as the discrimination means 15, the modem control means 16 and the password verification means 17, and in the microcomputer 36, in addition to the ROM 32, G
A RAM 32 in which PS information is stored is included. In addition, 3
Reference numeral 4 denotes 232C, TTL for connecting the GPS receiver 11 to a microcomputer.

The modem 12 also outputs vehicle position data to the microcomputer via the RS-232C driver 35 and serial data I / O (SIO). In this example, the ringer output of the ringing tone of the call is input to the mobile phone 13 via the earphone terminal of the other mobile phone to which the modem 12 is connected to the microcomputer 31 via the amplifier 39. It

The amplifier 39 amplifies the ringer output of the telephone 13 and converts it into a pulse signal, and the microcomputer 31 detects the number of pulses to determine whether it is data communication or voice communication.

In this determination, the type of ringing tone of the direct number of the portable telephone to be used is selected as a dedicated number when performing data communication, and the communication for acquiring the position information from the base station is selected as the direct number. Then, the modem is started up by distinguishing between the ringer sound when calling this direct number and the ringer sound during normal voice communication.

In this example, a NTT Mova Digital Hyper type (model: PII Hyper manufactured by Matsushita Communication Industrial Co., Ltd.) is used as a mobile phone, and digital data / data is used as a modem.
A FAX adapter 9600 (type: FJH11DFA) was used, and a digital data / FAX adapter 9600 cable 9pin (type: FJH11C9) was used.

In this case, if a standard battery pack called the battery pack S is used, the reception waiting time of the mobile phone is 70 hours (about 2 days). Also, the continuous use time of the modem (driven by the built-in battery) is 6 hours,
Since this is used in the ON state only during data transmission, it can be used for about 1 month under normal use (communication about 20 times a day).

Reference numeral 37 is an EEPROM for storing the password assigned to the mobile station 1.
The microcomputer 31 compares the password stored in this EEPROM with the password transmitted from the base station 2, and if they do not match, the vehicle information is not transmitted.
Reference numeral 38 indicates a reset IC for resetting the operation by initializing the microcomputer 31 which has started to malfunction due to the power supply to the built-in battery becoming small.

Next, the power supply control means 42 of this mobile station will be described. The power supply control means 42, as shown in FIG.
A charging circuit 43 for charging the backup secondary battery 41 when electric power is supplied from the vehicle battery 40.
A DC-DC converter 44 that regulates the voltage of 12 V or 24 V from the vehicle battery 40 to 5 V, which is the operating voltage of the controller 14, and a backup 2 when the power supply from the vehicle battery 40 is cut off.
It is provided with a three-terminal element 45 for regulating the voltage of 7.2 V from the secondary battery 41 to 5 V, and a power supply sensor 46 for detecting whether or not electric power is being supplied from the vehicle battery 40 to the controller 14. The microcomputer 31
According to the detection result of the power supply sensor 46, when the controller 14 is connected from the vehicle battery 40,
Power is supplied to the controller 14 via the DC-DC converter 44. When the vehicle engine key is turned on, the mobile station supplies power to the mobile station from the vehicle battery 40 and charges the backup secondary battery. On the other hand, when the vehicle engine key is turned off, the mobile station 1 receives the backup secondary battery 41. It is supposed to supply power from. That is, in this example, in the standby state when the vehicle engine key is turned off, power is supplied from the backup secondary battery 41 only to the microcomputer 31, the reset IC 38, and the amplifier 39 via the three-terminal element 45. Battery consumption is low. Further, when there is a call from the base station and communication is performed, the backup secondary battery 41 is connected to the microcomputer 31, the RS-232C driver 35, the SIO 36, the amplifier 39, and the reset IC 38 via the three-terminal element 45. Only the electric power is supplied, and the GPS driver 11 is not supplied with the electric power. The position information of the mobile station is stored in the RAM 31 of the microcomputer 31,
The last information when the electric power is supplied from the vehicle battery 40 to the GPS driver 11 is sent.

Next, the operation of the vehicle position display device according to this example will be described.

FIG. 1 is a flow chart showing the outline of the operation of the vehicle position display device according to this embodiment, FIG. 3 is a flow chart showing the operation of the base station, and FIGS. 4 to 6 are flow charts showing the details thereof. is there.

7 to 9 are flowcharts showing the operation of the mobile station. First, in the base station 1, the device can be started up and the mobile station can be called (ST1) and the mobile station control input (ST4). Further, when there is a connection request from the mobile station (ST7), it is possible to acquire the emergency information of the mobile station.

First, when the mobile station call input (ST1) is performed (ST2), mobile station information is obtained (ST3). Then, as shown in FIG. 4, the base station connects a communication line (SA1) and sends a position request signal to the mobile station (SA).
2). When the position information is obtained (SA3), the communication line is disconnected (SA4), the position information of the mobile station is displayed on the screen (SA5), and the data is recorded on a recording medium such as a magnetic disk, according to a predetermined procedure described later. (SA6).

Further, the base station sends mobile station control information (ST
4), the mobile station control information is transmitted (ST
6). Then, as shown in FIG. 5, the base station connects the communication line (SB1) and sends a control command to the mobile station (S).
B2). When the information is acquired (SB3), the communication line is disconnected (SB4), and the position information of the mobile station is displayed on the screen (SB
5) The data is recorded on a recording medium such as a magnetic disk (SB6). These communications can be performed manually, or can be performed at regular intervals with a certain time or a certain time open.

Further, the communication from the mobile station is input (S
At T7), when there is a connection request (ST8), mobile station emergency information acquisition is performed (ST9). Then, as shown in FIG.
The base station connects (receives) a communication line (SC1), acquires information from the mobile station (SC2), disconnects the communication line (SC3), and displays the information from the mobile station on the screen (SC
4) The data is recorded on a recording medium such as a magnetic disk (SC5).

Next, the operation of the mobile station 1 will be described. First, a case where the information of the mobile station is transmitted from the base station to the mobile station (above (ST3)) and a case where the control signal is transmitted to the mobile station (above (ST6)) will be described.

When the engine switch of the vehicle is turned on in the mobile station and the electric power is stably supplied to the mobile station, as shown in FIG. 7, the direct number of the mobile phone of the mobile station is transmitted from the base station. Is called, the ringer sound of the mobile phone of the base station is input to the above amplifier (SD
1), it is determined whether it is a call for data communication (S
D2).

If it is a call for data communication, the modem is activated (SD3) and the line is connected (SD4, SD
5, SD6), the password sent from the base station is confirmed (SD7), and vehicle data including the current vehicle position data (latitude, longitude, measurement time), etc. is transmitted from the mobile station to the base station. (SD8) Alternatively, the mobile station control information is transmitted from the base station and the transmission is terminated (SD9). At this time, if the mobile station cannot confirm the password, the line is disconnected after a certain period of time.

When the engine switch of the vehicle is turned off in the mobile station and the mobile station is supplied with power from the backup secondary battery, the same as when the engine switch is turned on. Although communication is performed, the vehicle position information and the like that are transmitted are different in that the information when the engine switch is turned off (power is not supplied to the device) is transmitted.

Next, when transmitting information from the mobile station (for example, emergency information), the mobile station first acquires its own position by GPS (SF1), as shown in FIG. Is activated (SF2), and then the call is transmitted to connect the communication line (SF3). The mobile station sends the information to be sent (SF4), disconnects the communication line (SF5), and ends the processing.

Next, the display of images in the base station of the vehicle position display device according to this example will be described. FIG. 9 shows the display device 2 in the base station of the vehicle position display device according to this example.
3 shows a display image 51 of No. 3. In this example, a list 52 of mobile station information, a map display 53, and other control icons 54a to 54e and 55a to 55k are displayed.

The list 52 shows the number of the target vehicle (1 to 8 in this example), the user's name, the telephone number for conversation, the time when the position is detected, and whether or not it is within the range within the currently displayed map screen. Display, vehicle status (engine switch on / off
Off, display of low battery in modem) is displayed.

Further, on the map display 53, the latest vehicle position in the displayed range is indicated by the vehicle number, and the engine switch is turned on / off (for example, on is blue,
Off displays the frame of the vehicle number in red).
In this display example, the number 1 out of the vehicles numbered 1 to 8,
Vehicles 2, 3, 4, 5 and 6 are in the display area, number 7
Indicates that the vehicle is out of the display range and that the vehicle with vehicle number 8 is being called.

By clicking the icon 54a, the map display 53 can display the whole of Japan from the widest level to the most detailed level in, for example, 9 levels.
By designating 4b, the display range can be moved in eight directions. In FIG. 9, reference numeral 54c designates a vehicle call, 54d a call stop, and 54e an icon for scrolling the list 52.

Reference numeral 55a is a map display scaling.
55b is an enlarged display in the designated frame, 55c is color adjustment, 55
d is the change of the vehicle display symbol on the map display, 55
e is a memory setting for presetting the display map, 55f is a recall memory for calling a vehicle in the above-mentioned memory setting range,
Reference numeral 55g designates registration of name in the above list 52, 55h designates registration of telephone number for calling in the above list, 55i calls the vehicle's travel history, 55j reserves a vehicle call timer for calling the vehicle at set times, and 55k sets all. The icon of a vehicle call is shown. By clicking each of these icons with the mouse, various functions of the device are implemented.

For example, it is assumed that past travel records are stored for each vehicle, a specific vehicle is called up at regular intervals,
The position of the mobile station whose position is detected is stored, the position at each time and the time are displayed on the map display 53, and the locus connecting the positions at each time is displayed. Further, in this vehicle position display device, as shown in FIG. 10 (1), when the vehicles are close to each other and it is difficult to distinguish them on the map display, the vehicle numbers are aligned and displayed 61, or as shown in FIG.
As shown in 0 (2), the leader line 62 is displayed when the vehicles are displayed in an overlapping manner in the map display, so that the location of the vehicle is displayed as an easily understandable one.

Therefore, according to the vehicle position display device of the present embodiment, it is possible to use a digital portable telephone and a portable modem device as the communication means. At this time, the portable modem device is battery type, and the battery in the device is used. Even if the service life of the modem is relatively short, the modem device operates for the minimum necessary time for data communication, and the modem does not operate during conversations other than data communication. The modem can be used without modification as the modem of the vehicle position display device.

Further, according to this example, by using the electronic map data of the commercially available GPS device and GPS CD-ROM, it is possible to make the area from the wide area to the narrow area of the whole of Japan, and the service of the digital mobile phone. Combined with the wide area and the low price, the vehicle position display device can be inexpensive, the structure is relatively simple, and the display target can be as wide as the range of Japan.

Further, in this example, when the password is incorrect, the transmission of the vehicle information is prohibited. Therefore, the vehicle information such as the vehicle position information is transmitted when the data is transmitted from the wrong base station. Because it is not done, confidentiality can be maintained.

Furthermore, in this example, since the on / off state of the engine switch is displayed, it is possible to instantly determine whether or not the vehicle is running without providing a special sensor or the like.

Further, in this example, even when the engine switch of the vehicle is turned off, the mobile station operates with the backup secondary battery, and even in such a case, vehicle information such as the vehicle position can be transmitted.

In addition, by providing various sensors and an emergency switch on the auxiliary input / output device, the presence / absence of the driver can be improved.
It is possible to transmit an emergency signal as vehicle data such as presence / absence of passengers, open / close state of doors, various traveling information of the vehicle (distance traveled, speed, engine speed, engine state, etc.), and remote management of the vehicle can be performed.

Further, the auxiliary input / output device is equipped with various actuators, and a vehicle is operated by locking / unlocking a door lock, starting / stopping an engine by operating an ignition switch, and forcibly disconnecting a battery line according to a command from a base station. Remote control such as forced electric lock can be performed.

In the above example, a case where a digital mobile phone is used as the communication device has been described, but other means such as MCA radio can be used as the communication device.

[0061]

As described above, according to the present invention,
As the communication means, a digital mobile phone and a mobile modem device can be used. At this time, even if the mobile modem device is battery type and the battery life of the device is relatively short, the modem device operates. This is the minimum time required for data communication, and since the modem does not operate during conversations other than data communication, it is possible to use a commercially available modem without modification as a vehicle position display device modem. It will be possible.

Further, according to the present invention, by using the electronic map data of the commercially available GPS device and the GPS CD-ROM, it is possible to set the area from the wide area to the narrow area of the whole of Japan, and the service of the digital mobile phone is provided. Combined with the wide area and the low price, the vehicle position display device can be inexpensive, the structure is relatively simple, and the display target can be as wide as the range of Japan.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an embodiment of a vehicle position display device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a mobile station of the vehicle position display device according to the present invention.

3 is a flowchart showing an operation of a base station of the vehicle position display device shown in FIG.

4 is a flowchart showing a detailed part of an operation of a base station of the vehicle position display device shown in FIG.

5 is a flowchart showing a detailed part of the operation of the base station of the vehicle position display device shown in FIG.

6 is a flowchart showing a detailed part of the operation of the base station of the vehicle position display device shown in FIG.

7 is a flowchart showing the operation of the mobile station of the vehicle position display device shown in FIG.

8 is a flowchart showing an operation of the mobile station of the vehicle position display device shown in FIG.

9 is a diagram showing a display example of an image on the display device of the vehicle position display device shown in FIG.

10 is a diagram showing another display example of an image on the display device of the vehicle position display device shown in FIG.

[Explanation of Codes] 1 Mobile Station 2 Base Station 11 Mobile Station Position Acquisition Device (GPS) 12 Modem 13 Communication Equipment (Mobile Phone) 14 Controller (Microcomputer) 15 Discrimination Means (Microcomputer) 16 Modem Control Means (Microcomputer) 17 Password collating means (microcomputer) 18 Auxiliary input / output device 21 Communication equipment (mobile phone) 22 Modem 23 Mobile station position information display device 24 Central processing unit (calculator) 25 Password sending means 26 Input device (mouse / keyboard) 27 Record Medium (magnetic disk / CD-ROM)

Claims (9)

[Claims] 1. A mobile station (1) arranged in a vehicle, and a base station (2) communicating with the mobile station, wherein the mobile station (1) obtains a current position of the vehicle. Overall control of a device (11), a modem (12) for modulating vehicle information including vehicle position information into communication data and demodulating communication data from a base station, a communication device (13), and a mobile station (1). A base station (2) that includes a communication device (21) and a communication device (21) that modulates information from the base station into communication data and includes communication data from the mobile station with mobile station position data. Vehicle position display device including a modem (22) for demodulating information, a mobile station position information display device (23) for displaying vehicle information including the current position of the vehicle, and a central processing unit (24) for overall control In the above, the mobile station is A determination means (15) for determining that the communication from the base station is a data communication request, and when the data communication request is made, the modem is started to start the data communication, and when the data communication is finished, the modem is started. A vehicle position display device comprising a modem control means (16) for lowering the vehicle information, and transmitting and receiving vehicle information including vehicle position information between the mobile station and the base station. 2. The base station (2) is provided with a password sending means (25), and the mobile station (1) is verified whether the password is valid or not, and if the password is incorrect. The vehicle position display device according to claim 1, further comprising a password collating means (17) for prohibiting the transmission of the vehicle information. 3. The mobile station (1) inputs vehicle information other than vehicle position information to the modem (12), and receives an instruction from a base station (2) to drive an output device provided in the vehicle. The vehicle position display device according to claim 1 or 2, further comprising an input / output device (18). 4. The auxiliary input / output device (18) transmits on / off information of a vehicle engine key switch as vehicle information, and the base station turns on / off the engine key switch of the vehicle.
The communication device of the vehicle position display device according to claim 3, wherein the off information is displayed as vehicle information. 5. The mobile station comprises a backup secondary battery other than a vehicle battery and a power supply control means, and the power supply control means supplies the vehicle battery or power to the mobile station when the vehicle engine key is turned on. 5. The vehicle according to claim 1, claim 2, claim 3, or claim 4, wherein the backup secondary battery is charged from the vehicle battery, and the mobile station is supplied with power from the backup secondary battery when the vehicle engine key is off. Communication device for position display device. 6. A mobile station (1) arranged in a vehicle and a base station (2) communicating with the mobile station, wherein the mobile station (1) obtains a current position of the vehicle. A device (11), a modem (12) for modulating vehicle information including vehicle position information into communication data and demodulating communication data from a base station, a communication device (13), and a controller (14) for overall control. The base station (2) includes a communication device (21), and a modem (21) that modulates information from the base station into communication data and demodulates communication data from the mobile station into vehicle information including mobile station position data ( 22), a mobile station position information display device (23) that displays vehicle information including the current position of the vehicle, and a central processing unit (24) that controls the mobile station as a whole. Mobile station (1) When there is a communication request from the base station (2), it is determined that it is a data communication request, and when it is a data communication request, the modem (22) is started to start data communication, and the base station (2) A communication method of a vehicle position display device that receives and transmits vehicle information including vehicle position information to and from the vehicle and shuts down the modem (22) after data communication is completed. 7. The communication method according to claim 6, wherein a password is exchanged between the base station and the mobile station, and the mobile station transmits the vehicle information after the password verification. 8. The mobile station inputs vehicle information other than vehicle position information to the modem and transmits the vehicle information to the base station, and the mobile station receives information from a base station that drives an auxiliary output device provided in the vehicle. The communication method of the vehicle position display device according to claim 6 or 7, which receives data. 9. The mobile station transmits ON / OFF information of an engine key switch of a vehicle as vehicle information, and the base station transmits an ON / OFF information of an engine key switch of the vehicle.
The communication method of the vehicle position display device according to claim 8, wherein the off information is displayed as vehicle information.