JPH08202995A - Navigation device - Google Patents

Abstract

PURPOSE: To provide a navigation device which has a communication means and is capable of displaying not only the present position of the driver's own vehicle but also routes of another vehicle. CONSTITUTION: This device is provided with a route judging part 12 between two positions communicating the positional information measured by a GPS part 3 between a present vehicle 1 and the other vehicle 2 via a radio communication equipment 5, comparing the reception history of the positional information on the other vehicle 2 stored in an outer vehicle positional information storage part 11 and the map information stored in a CD-ROM 17 and discriminating an other vehicle route 16, a color LCD display 14 simultaneously displaying the discriminated other vehicle route 16 and a present vehicle location 4 on a road map 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device which can be mounted on, for example, an automobile.

[0002]

2. Description of the Related Art In recent years, a navigation system has been developed which mounts a GPS receiver or the like on an automobile to detect the position of the vehicle and displays the position on a television screen. In addition, JP-A-5
As disclosed in Japanese Patent Laid-Open No. 100008, there has been invented one that communicates positional information between two vehicles and detects a relative positional relationship. The configuration will be described below with reference to FIG.

FIG. 10 is a block diagram of a conventional navigation device.

The own vehicle 1 and the other vehicle 2 respectively use a GPS section 3 for positioning one's present position (own vehicle position 4) using electric waves constantly sent from a plurality of artificial satellites (not shown). It is equipped with a wireless communication device 5. The own vehicle 1 and the other vehicle 2 can communicate with each other by the wireless communication device 5. further,
Reference numeral 6 denotes an information transmitting unit that transmits the own vehicle position 4 to the other vehicle 2 via the wireless communication device 5, and 7 denotes the other vehicle position 8 that is transmitted from the information transmitting unit (not shown) of the other vehicle 2. 5, a receiving unit for receiving via 5, a position information storage unit for storing the latest own vehicle position 4 of the own vehicle 1 measured by the GPS unit 3, and 41 for calculating a mutual distance from the position information of both vehicles. Distance calculation unit,
42 is a position display unit that displays the position information of both vehicles, and 43 is a distance display unit that displays the mutual distance between the two vehicles.

A GPS device 3 mounted on the own vehicle 1 and the other vehicle 2
Detects the current position on the earth as latitude, longitude, and altitude by receiving radio waves emitted from a plurality of artificial satellites (not shown) that orbit the earth. The owner of the own vehicle 1 communicates with the other vehicle 2 using the wireless communication device 5, and the latitude, longitude, and altitude (hereinafter referred to as the own vehicle position 4) indicating the position information of the own vehicle 1 are transmitted by the information transmission unit 6. The signal is modulated into a transmittable signal and transmitted to the other vehicle 2. At the same time, after receiving the position information signal transmitted from the information transmission unit (not shown) of the other vehicle 2 via the wireless communication device 5, the reception unit 7 demodulates the signal into an element indicating the position information. , The other vehicle position 8 is obtained.

The other vehicle position 8 obtained by the reception is sent to the distance calculation unit 41 and the position display unit 42. The distance calculation unit 41
The mutual distance is calculated based on the position information of both vehicles. As a method of calculating the mutual distance, the Pythagorean theorem is used after converting the difference in latitude and longitude into the distance difference. Then, the position display unit 42 displays the positions of both vehicles (the own vehicle position 4, the other vehicle position 8), and the distance display unit 43 displays the inter-vehicle distance calculated by the distance calculation unit.

In this way, the mutual position and distance can be confirmed.

[0008]

However, in such a conventional device, although the relative position between the own vehicle and the other vehicle can be known, the current position is only displayed, so that the other vehicle's position is displayed. The driver had to memorize the route that had been passed, and it was not enough to assist the driver in driving.

That is, it is important to follow the route of the leading vehicle when a plurality of vehicles of fellows are guided to the same destination by being guided by the leading vehicle. Moreover, it was difficult to say that it would improve the convenience of the driver. In addition, when transmitting / receiving each position information between both vehicles, no consideration has been given to reduction of the frequency of wireless communication.

The present invention is to solve the above-mentioned problems.
To be able to display the path of another vehicle,
It is an object of the present invention to provide a navigation device in which the driving support power for the driver is further enhanced compared to the conventional one. Further, it is intended to reduce the frequency of wireless communication, reduce the occupancy rate of radio waves, and reduce the communication cost.

[0011]

According to a first aspect of the present invention, there is provided position detecting means for detecting the position of the own moving object based on a predetermined received radio wave, and position information receiving means for receiving the position information of another moving object. A moving path estimating means for estimating a moving history path of the other moving object based on the received position information of the other moving object, a detection result by the position detecting means and an estimation result by the moving path estimating means. Based on the movement information generating means for generating and outputting information on the movement of the self-moving object based on the navigation device.

The present invention according to claim 2 further comprises a map information storage unit for storing road map information, wherein the moving object is a car, and the movement information generating means also uses the stored road map information. The navigation device is configured to generate information regarding the movement.

According to the present invention of claim 3, a vehicle position detecting means, a communication means capable of communicating with a communication means mounted in another vehicle,
A map information storage unit that stores a road map, an information transmission unit that transmits the own vehicle position information detected by the own vehicle position detection unit to another moving body, and a position information transmitted from the communication unit of another vehicle The receiving unit and other vehicle route identification means that accumulates and stores the position information of other vehicles and identifies the continuation of the position information of other vehicles on the road map as the other vehicle route, and the other on the road map and the road map. The navigation device includes a display unit that simultaneously displays a vehicle route and vehicle position information in an overlapping manner.

According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, a turn determination unit for determining that the own vehicle has turned at an intersection, and the own vehicle traveling from the time when the own vehicle position information is transmitted. The running distance calculation unit that calculates the distance, the time counting unit that measures the elapsed time from the time when the vehicle position information is transmitted, and the time when the calculated distance of the running distance calculation unit exceeds a predetermined distance or the time counting unit. A timing determination unit that determines that at least one of the time points at which the time counting time exceeds a predetermined time period and the time point at which the turn determination unit determines the turn is the timing for transmitting the vehicle position information. It is a navigation device equipped with.

According to the present invention of claim 5, in addition to the invention according to claim 3 or 4, it is detected whether the own vehicle position information is on the other vehicle route by comparing the other vehicle route and the own vehicle position information. Detecting means, an intersection detection unit that detects an intersection where another vehicle has turned, a distance calculation unit that calculates the distance between the own vehicle position information and the intersection, and the own vehicle is on the route of the other vehicle and the distance calculation unit Is a navigation device that includes a turning direction determining unit that determines a turning direction that follows the route of another vehicle when the result of calculation is less than or equal to a predetermined distance, and an instruction unit that instructs the driver about the turning direction.

According to the present invention of claim 6, in addition to the invention of claim 3, 4, or 5, the own vehicle position information is on the other vehicle route by comparing the other vehicle route and the own vehicle position information. The navigation device includes a detection unit that detects whether or not the state change determination unit determines a change in the detection result of the detection unit, and a notification unit that notifies the driver of the determination result of the state change determination unit.

The present invention according to claim 7 provides the invention according to claims 3, 4, 5, and 5.
Alternatively, in addition to the invention described in 6, a voice call microphone, a voice receiving speaker, and a changeover switch are provided, and when the call changeover switch is in the first state, transmission of the own vehicle position information and other vehicle position Navigation for receiving information and for enabling a voice conversation between the own vehicle and another vehicle by the communication means, the voice call microphone, and the voice receiving speaker when the call changeover switch is in the second state It is a device.

[0018]

According to the present invention of claim 1, the position detecting means detects the position of the own moving object based on a predetermined received radio wave, and the position information receiving means receives the position information of the other moving object, and the moving route estimating means. Based on the received position information of the other moving object, the movement history route of the other moving object is estimated, and the movement information generation means is based on the detection result of the position detection means and the estimation result of the movement path estimation means. Then, information about the movement of the self-moving object is generated and output.

According to the present invention of claim 2, the map information storage unit stores road map information, and the moving object is an automobile.
The movement information generation means also uses the stored road map information to generate information regarding the movement.

According to the present invention of claim 3, the own vehicle position detecting means detects the position of the own vehicle, the communication means can communicate with the communication means mounted in another vehicle, and the map information storage section stores the road map. Then, the information transmitting section transmits the own vehicle position information detected by the own vehicle position detecting means to another moving body, and the receiving section receives the position information transmitted from the other vehicle communication means, and the other vehicle route The identifying means accumulates and stores the position information of the other vehicle, identifies the continuation of the position information of the other vehicle on the road map as another vehicle route, and the display unit displays the other vehicle route on the road map. And the vehicle position information are displayed at the same time.

As a result, for example, the traveling route of the other party can be displayed together with the map, which makes it easy to confirm and track the traveling route of another vehicle.

In the present invention of claim 4, the turn determining unit determines that the own vehicle has turned at the intersection, and calculates the distance traveled by the own vehicle from the time when the running distance calculating unit transmits the own vehicle position information. Then, the timing unit measures the elapsed time from the time when the vehicle position information is transmitted, and the timing determination unit determines whether the calculated distance of the travel distance calculation unit exceeds the predetermined distance or the time measured by the time measurement unit. It is determined that at least any one of the times when the time is exceeded and the time when the turn determination unit determines the turn is the timing for transmitting the own vehicle position information.

Thus, for example, when the timing of transmitting the own vehicle position is set to the time when the vehicle crosses an intersection, the time when the vehicle travels for a predetermined distance, or the time when a predetermined time elapses, the route can be surely identified and the communication timing can be improved. Limited,
It is possible to reduce communication costs without always occupying communication radio waves.

In the present invention of claim 5, the detecting means compares the other vehicle route with the own vehicle position information to detect whether or not the own vehicle position information is on the other vehicle route, and the intersection detecting section The other vehicle detects an intersection where the other vehicle has turned, the distance calculation unit calculates the distance between the own vehicle position information and the intersection, the turning direction determination unit, the own vehicle is on the other vehicle route, and, When the calculation result of the distance calculation unit is less than or equal to a predetermined distance, the turning direction that follows the other vehicle route is determined, and the instruction means instructs the driver in the turning direction.

Thus, for example, when the own vehicle approaches an intersection where the other vehicle is turned, the direction in which the own vehicle is turning is instructed, so that the driver can track the other vehicle without hesitation. .

In the present invention of claim 6, the detecting means compares the other vehicle route and the own vehicle position information to detect whether the own vehicle position information is on the other vehicle route, and the state change determining means The change of the detection result of the detection means is discriminated, and the notification means informs the driver of the discrimination result of the state change discrimination means.

As a result, for example, since it is possible to know that the state of whether or not the own vehicle is on the other vehicle route has changed, it is necessary for the driver to always visually check the other vehicle route and the own vehicle position. It is possible to drive more safely and comfortably.

According to the present invention of claim 7, by the above-mentioned constitution,
For example, not only the wireless communication device can communicate position information but also voice conversations between passengers in the vehicle and other vehicles can be performed, and it is not necessary to separately prepare a wireless communication device for voice conversation.

[0029]

EXAMPLES Examples according to the present invention will be described below.

First, the first embodiment will be described with reference to FIGS.

FIG. 1 shows a block diagram of a navigation device according to an embodiment of the present invention. FIG. 2 is a diagram for explaining the operation of the route identifying means of the present invention. In FIG. 1, the own vehicle 1 and another vehicle 2 are equipped with the navigation device of the present invention.
However, the device mounted on the other vehicle 2 is not shown. Reference numeral 3 denotes a GPS unit mounted on the own vehicle 1 for positioning the own vehicle position 4 by radio waves received from a plurality of artificial satellites (not shown).
The position detecting means and the own vehicle position detecting means of the present invention correspond to the GPS unit 3. The own vehicle 1 and the other vehicle 2 can communicate with each other via the wireless communication device 5 as the communication means of the present invention. Reference numeral 6 denotes an information transmitting unit for transmitting the position information 4 of the own vehicle 1 to the other vehicle 2 via the wireless communication device 5, and 7 denotes the other vehicle position 8 transmitted from the information transmitting unit (not shown) of the other vehicle 2. The receiving unit 9 receives via the wireless communication device 5, and 9 is a position information storage unit that stores the latest position information (own vehicle position 4) of the own vehicle 1 measured by the GPS unit 3. Equivalent to the example. The position information receiving means of the present invention includes the receiving unit 7 and the like. Reference numeral 10 denotes another vehicle route identifying means, which stores the other vehicle position 8 received and accumulates the other vehicle position storage unit 11 and the two-position route determination unit 12.
And the other vehicle route storage unit 13. Details of the operation of the other vehicle route identification means 10 will be described later. Color L
The display unit including the CD display 14 displays the road map 15, the other vehicle route 16, the other vehicle position 8, and the own vehicle position 4 to the driver. Here, the road map is stored in the CD-ROM 17 (read-only memory using a compact disc) as the map information storage unit of the present invention. Here, the moving route estimating means of the present invention corresponds to the other vehicle route identifying means 10, and the moving information generating means of the present invention includes the color LCD display 14 and the like.

The operation of this embodiment having the above configuration will be described below.

The own vehicle 1 has its own vehicle position 4 measured by the GPS unit 3.
Is modulated into a signal that can be transmitted by the information transmitting unit 6, and is transmitted to the other vehicle 2 via the wireless communication device 5. At the same time, a signal transmitted from an information transmitting section (not shown) of the other vehicle 2 is received via the wireless communication device 5, and then the signal is demodulated by the receiving section 7 to the other vehicle position 8. The above is the same as the conventional example.

Next, the other vehicle route identifying means 10 will be described. For ease of explanation, it is assumed that the other vehicle 2 starts from the position a and travels in the order of b, c, d, e, and f as shown in FIG. 2 and transmits the position information at each point. When the other vehicle position 8 is received, this information is stored in the other vehicle position storage unit 11. The other vehicle position storage unit 11 stores a predetermined number of other vehicle positions 8
Is stored. The latest two other vehicle positions of the stored information of the other vehicle position storage unit 11 are sent to the inter-position route determination unit 12. Do not send if there is only one stored information. The two-position route determination unit 12 connects the two positions along the road by referring to the road map 15 of the CD-ROM 17 and determines that the two-position route (not shown). When the other vehicle 2 arrives at the position b, the two-position route determination unit 12 searches for a road connecting the two positions a and b, and sets this as a route 18 between a and b. The two-position relational road is stored in the other vehicle route storage unit 13, but is additionally stored in the already stored route. When the information on the c position is received, the two-position route determination unit 12 determines the bc route 19, but at this time, the other vehicle route storage unit 13 has already stored the ab route 18 and the bc route is stored in the other vehicle route storage unit 13. 1
9 is additionally stored. As a result, the other vehicle route storage unit 13 stores the route between abc. Further d,
By receiving the position information in the order of e and f, the route from a to f is stored. In this way, the route of the other vehicle 2 can be identified by the sequence of the other vehicle positions 8. The above is the operation of the other vehicle route identification means 10.

Next, the other vehicle position 8 stored in the other vehicle position storage unit 11 and the other vehicle route 1 stored in the other vehicle route storage unit 13.
6, the latest vehicle position 4 stored in the position information storage unit 9 and the road map 15 stored in the CD-ROM 17 are color LC
It is displayed on the D display 14. At this time, road map 1
The other vehicle route 16 is shown at a matching position 5 by making the road color a specific color, and the own vehicle position 4 and the other vehicle position 8 are shown by geometric symbols such as a triangle and a circle symbol.

In this way, the color LCD display 14 shows not only the vehicle position 4 and the other vehicle position 8 but also the other vehicle route 16, so that the driver of the own vehicle 1 can track the other vehicle 2. It becomes easy to drive. The above is the description of the first embodiment of the present invention.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3, 4 and 5.

FIG. 3 is a block diagram of a second embodiment of the navigation device according to the present invention. FIG. 4 is a flow chart of the turn determination unit of the present invention. FIG. 5 is a flow chart of the distance integration unit of the present invention.

Since the second embodiment has almost the same structure as the first embodiment, the description of the common parts will be omitted. The difference between the configurations of the second embodiment and the first embodiment is that the transmission timing determining means 20 is provided in the configuration of the first embodiment, and the vehicle position is determined based on the timing determined by the transmission timing determining means 20. 4 is transmitted to the other vehicle 2.

The transmission timing determining means 20 will be described below.

The transmission timing determining means 20 has a turn determining section 21, a traveling distance calculating section 22, a clock section 23 and a timing determining section 24. FIG. 4 shows a flowchart of the operation of the turn determination unit 21. The turn determination unit 21 is a unit that determines whether or not the vehicle 1 is turning at an intersection. The turn determination unit has a turning angle detector 25 that detects a turning angle of a steering wheel (not shown), and when the turning angle of the steering wheel becomes a predetermined angle or more, the latest vehicle position 4 and the road map 15 are displayed. Compare
When the position indicated by the host vehicle position 4 is within the intersection, it is determined that the host vehicle 1 is turning around the intersection.

FIG. 5 shows a flow chart of the operation of the traveling distance calculation unit 22. The mileage calculation unit 22 is a part that calculates the mileage since the previous vehicle position 4 was transmitted. The travel distance calculation unit 22 includes a two-position storage unit 26, a two-position distance calculation unit 27, and a distance integration unit 28. The two-position storage unit 26 stores the latest vehicle position 4 and the vehicle position 4 positioned immediately before it. The two-position distance calculation unit 27 calculates the distance between the two positions stored in the two-position storage unit 26. The calculation method is used when calculating the distance between the own vehicle 1 and the other vehicle 2 in the conventional example. The Pythagorean theorem is used as in the previous method. When the vehicle position 4 is transmitted, the initial value of the distance accumulating unit 28 is set to 0, and the distance between two positions is calculated and added to the distance accumulating unit 28 each time positioning is performed by the GPS unit 3. As a result, the distance integration unit 28 integrates and shows the distance traveled since the previous vehicle position 4 was transmitted, and this is the output of the travel distance calculation unit 22. The clock unit 23 measures the elapsed time since the previous vehicle position 4 was transmitted.

The transmission timing determination unit 24 determines the time when the turn determination unit 21 determines that the vehicle 1 is turning at an intersection as the transmission timing. Further, the traveling distance calculation unit 22
The time when the output exceeds the predetermined distance is determined as the transmission timing. Further, the time point when the measurement result of the clock unit 23 exceeds a predetermined time is determined as the transmission timing. The information transmitter 6 transmits the own vehicle position 4 to another vehicle in response to the determination of the transmission timing. At this time, the distance calculation unit 22 and the clock unit 23 are initialized.

By thus determining the transmission timing, the fact that the own vehicle 1 has turned at the intersection is transmitted to the other vehicle 2, so that the other vehicle route identification means 10 on the receiving side receives the other vehicle 2 at the turned intersection. You can know. Further, since the transmission is performed at the time when the vehicle has traveled for a predetermined distance and when a predetermined time has elapsed, information is not lost for a long period of time even when the vehicle does not turn at an intersection. Further, since the transmission timing is limited, the occupation time of the communication radio wave is short and the power consumption is low.
Further, when using a radio wave that requires a high cost for communication such as a car phone, the communication cost can be reduced. The above is the description of the second embodiment.

In the second embodiment, the clock unit 23
Although the transmission timing determining means 20 is provided with both the traveling distance calculating section 22 and the traveling distance calculating section 22, only one of them may be provided.

Next, a third embodiment of the navigation device according to the present invention will be described with reference to FIGS. 6 and 7.

FIG. 6 is a flow chart showing the operation of the third embodiment. FIG. 7 is an operation explanatory view of the tolerance point discriminating unit of the present embodiment. Most parts of the configuration of the third embodiment are the same as those of the above-described first embodiment, and therefore description of common parts will be omitted.

In the third embodiment, compared with the first embodiment, the other vehicle route 16 and the own vehicle position 4 are compared, and the own vehicle position 4
The tracking state detecting means 29 for detecting whether the vehicle is in the tracking state on the other vehicle route 16, the intersection determining section 30 for determining the intersection at which the other vehicle 2 turns, the distance between the own vehicle position 4 and the intersection. An intersection distance calculating unit 31 for calculating the following, a turning direction determining unit 32 for determining a turning direction for the own vehicle 1 to follow the other vehicle 2, and an instruction means 33 for instructing the driver by voice the turning direction are added. It is composed.
The tracking state detection means 29 compares the other vehicle route 16 stored in the other vehicle route storage unit 13 with the latest own vehicle position 4, and when the own vehicle position is on the other vehicle route 16, the own vehicle 1 determines another. It is determined that the vehicle 2 is being tracked. If not, it is determined to be in a non-tracking state. The intersection determination unit 30 is provided in the other vehicle route identification means 10. To determine the intersection, the other vehicle route 16 stored in the other vehicle route storage unit 13 is called, and the bending angle 34 of the other vehicle route 16 is checked along the other vehicle route 16 starting from the position indicated by the latest own vehicle position 4. A position where the other vehicle route 16 bends at an angle equal to or greater than the predetermined angle α is found and it is determined that the vehicle is the turning intersection 35. In this case, a mere angular road that is not an intersection is determined as the turning intersection 35, but this is practically acceptable.

The intersection distance calculation unit 31 determines the turning intersection 35.
And the latest position of the vehicle 1 is calculated.

When the result of the tracking state detecting means 29 is the tracking state and the calculation result of the intersection distance calculating section 31 is less than or equal to the predetermined distance L, the turning direction determining section 32 determines the turning direction of the own vehicle from the bending direction of the other vehicle route 16. 1 determines the direction in which the vehicle should turn, and the instructing means 33 gives the driver a voice instructing the turning direction.

In this way, when approaching the turning intersection 35 of the other vehicle 2, the instructing means 33 gives a voice instruction to the driver about the turning direction, so that the driver can track the other vehicle 2 without hesitation. You will be able to. The above is the description of the third embodiment of the present invention.

Next, a fourth embodiment of the navigation device according to the present invention will be described with reference to FIG.

FIG. 8 is a flow chart for explaining the operation of the fourth embodiment of the present invention. Since the fourth embodiment of the present invention has most of the same configuration as the first embodiment described above, a description of common parts will be omitted.

In the fourth embodiment, the other vehicle route 16 and the own vehicle position 4 are compared with those in the first embodiment to determine whether the own vehicle position is on the other vehicle route 16 or not. Tracking state detecting means 29 for detecting, a state change detecting section 36 for detecting that the own vehicle 1 has changed from a tracking state to a non-tracking state, and vice versa, a state change. Notification means 37 for notifying the driver of what is done by voice
Has been added.

The tracking state detecting means 29 compares the other vehicle route 16 stored in the other vehicle route storage unit 13 with the latest vehicle position 4, and when the vehicle position is on the other vehicle route 16 It is determined that 1 is a tracking state in which the other vehicle 2 is being tracked. If not, it is determined to be in a non-tracking state. The state change detection unit 36 holds the result of the immediately preceding tracking state determination means 29, and determines that there is no change if the state is the same as the latest result, and changes if the state is different. Determine that When it is determined that a status change has occurred, the latest tracking status means 29
Means 37 for notifying the result of, that is, the tracking state or the non-tracking state
Let us know. The notification means notifies the driver of the state change and the latest state by voice.

In this way, the driver himself / herself compares the other vehicle route 16 and the own vehicle position 4 with the fact that the state where the own vehicle 1 is currently tracking the other vehicle 2 has changed. You can know without doing. Specifically, the fact that the other vehicle 2 has deviated from the route can be immediately known at the time of deviating, so that there is an advantage that the route can be quickly restored. The above is the description of the fourth embodiment of the present invention.

Next, a fifth embodiment of the navigation system according to the present invention will be described.

FIG. 9 shows the main part of the fifth embodiment. Most parts of the configuration of the fifth embodiment are the same as those of the first embodiment described above, and a description of common parts will be omitted.

In the fifth embodiment, in addition to the first embodiment, a voice call microphone 38, a voice receiving speaker 39, a wireless communication device 5, an information transmitting unit 6, a receiving unit 7, and a microphone are provided. 38 and a speaker 39 and a call changeover switch 40 provided between them.

This main part is shown in FIG. As shown in FIG. 9, the switch 40 can switch between two states. In the first state, the wireless communication device 5 is connected to the information transmitting unit 6 and the receiving unit 7. In the second state, the wireless communication device 5 is connected to the microphone 38 and the speaker 40. When the driver or occupant of the own vehicle 1 and the other vehicle 2 switches the selector switch 40 to the first state, the information transmitter 6 and the receiver 7 are connected to the wireless communication device 5. At this time, the state is the same as that of the first embodiment, and therefore the operation is exactly the same as that of the first embodiment. Further, when the switch 40 is switched to the second state, the speaker 39 and the microphone 38 are connected to the wireless communication device 5. At this time, the driver or occupant of the own vehicle 1 can speak his / her own voice through the speaker (not shown) of the other vehicle 2 by speaking into the microphone 38. On the contrary, the voice of the driver or the occupant of the other vehicle 2 can be uttered by the speaker 39 of the own vehicle 1. In short, normal voice conversation is possible.

As described above, according to the fifth embodiment, the radio communication device 5 is operated by operating the call changeover switch 40.
Can be used not only for exchanging position information but also for voice conversation, so that it is not necessary to separately prepare a wireless communication device for voice conversation.

The above is the description of the fifth embodiment of the present invention.

The following effects are apparent from the above embodiment.

According to the first embodiment, the color LCD display 14 shows not only the vehicle position 4 and the other vehicle position 8 but also the other vehicle route 16, so that the driver of the own vehicle 1 can drive the other vehicle 2. This has the effect of making it easier to drive in a chasing manner.

Further, according to the second embodiment, since the fact that the own vehicle 1 has turned at the intersection is transmitted to the other vehicle 2, the other vehicle route identification means 10 on the receiving side recognizes the turned intersection of the other vehicle 2. I can know. Further, since the transmission timing is limited, there is an effect that the occupied time of the communication radio wave is small and the communication cost can be reduced when the radio wave which is costly for communication is used.

Further, according to the third embodiment, when the turning intersection 35 of the other vehicle 2 is approached, the instructing means 33 is provided.
Indicates to the driver the turning direction by voice, so that the driver can track the other vehicle 2 without hesitation.

Further, according to the fourth embodiment, the driver himself / herself recognizes that the state in which the own vehicle 1 is currently tracking the other vehicle 2 or not is different from the other vehicle route 16 by the driver. There is an effect that the own vehicle position 4 can be known without comparing.

Further, according to the fifth embodiment, by operating the changeover switch 40, the wireless communication device 5 can be used not only for exchanging position information but also for voice conversation. There is an effect that it is possible to eliminate the need to prepare the wireless communication device. The above embodiments may be used in combination with each other.

The present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.

Further, in the above embodiment, the case where the display device is used as the means for outputting the information on the movement of the self-moving object has been described. However, the present invention is not limited to this. It may be configured to output by. In this case, for example, the position of the own moving object detected by the position detecting unit and the movement history route of the other moving object estimated by the moving route estimating unit are compared and determined, and the position of the own moving object is moved to another position. In order to be able to follow the movement history route of the object, it can be realized by issuing the moving direction to be followed as the own moving object as a message only by voice. As an example of the message only by voice, for example, "There is an intersection in the front. The preceding vehicle turned left, so turn left." Or, if the destination has been entered in advance, "in front There is an intersection. The preceding car made a left turn, but you may go straight to reach your destination. What will you do? " However, the information on the movement of the moving object of the present invention, the position of the moving object detected by the position detection means, by comparing the movement history path of the other moving object estimated by the moving path estimating means, It is not premised that the self-moving object follows another moving object, and the comparison / determination means for that purpose is not essential. Needless to say, even if the operator of the self-moving object obtains information on the movement of the self-moving object, it does not necessarily have to follow this. Therefore, as in the case described in the first embodiment, the vehicle position 4 and the other vehicle position 8 are displayed on the color LCD display 14 (see FIG. 1).
Also, when the other vehicle route 16 is simply displayed at the same time and the driver is not actively instructed to follow the other vehicle route, the movement of the self-moving object is also performed. It is included in the concept of outputting information regarding. That is, the concept of the information regarding the movement of the self-moving object of the present invention is an extremely broad concept including all the above cases.

In the above embodiment, the case where the road map is used has been described, but the present invention is not limited to this. For example, without using the road map, the position of the own moving object detected by the position detecting means (for example, , Latitude, longitude, altitude, etc.) and the movement history route of another moving object estimated by the movement route estimating means, and the position of the own moving object is the movement history route of the other moving object. In order to be able to follow up, this can be realized by issuing a voice message as the moving direction to be followed by the moving object. In deserts and undeveloped areas where road maps cannot be used, a device having such a configuration is extremely effective.

In the above embodiment, the case where the vehicle is used as the moving object has been described, but the present invention is not limited to this.
For example, it may be a two-wheeled vehicle such as a motorbike, a tank, an armored vehicle, or the like. In short, the type of moving object does not matter.

[0073]

As is apparent from the above description, the present invention has an advantage that the support power for the driver can be further enhanced as compared with the prior art.

[Brief description of drawings]

FIG. 1 is a block diagram of a navigation device according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory view of the route identifying means of the first embodiment.

FIG. 3 is a block diagram of a second embodiment.

FIG. 4 is a flowchart of a turn determination unit according to a second embodiment.

FIG. 5 is a flow chart of a distance integration unit of the second embodiment.

FIG. 6 is a flowchart showing the operation of the third embodiment.

FIG. 7 is an operation explanatory view of the tolerance point discriminating unit of the third embodiment.

FIG. 8 is a flowchart showing the operation of the fourth embodiment.

FIG. 9 is a diagram showing a main part of a fifth embodiment.

FIG. 10 is a block diagram of a conventional example.

[Explanation of symbols]

 1 own vehicle 2 other vehicle 3 GPS section 4 own vehicle position 5 wireless communication device 6 information transmission section 7 receiving section 8 other vehicle position 9 position information storage section 10 other vehicle route identification means 11 other vehicle position storage section 12 2 inter-position route Judgment unit 13 Other vehicle route storage unit 14 Color LCD display 15 Road map 16 Other vehicle route 17 CD-ROM 20 Transmission timing determination unit 21 Turn determination unit 22 Running distance calculation unit 23 Timing unit 24 Timing determination unit 29 Tracking state detection unit 30 Intersection discriminating unit 31 Intersection distance calculating unit 32 Turning direction determining unit 33 Instructing means 34 Bending angle 35 Turning intersection 36 State change detecting unit 37 Notification means 38 Microphone 39 Speaker 40 Switch

Claims (7)

[Claims] 1. A position detecting means for detecting the position of the moving object itself based on a predetermined received radio wave, a position information receiving means for receiving the position information of another moving object, and the received position information of the other moving object. On the basis of the movement history estimating means for estimating the movement history path of the other moving object, and the detection result by the position detecting means and the estimation result by the movement path estimating means, information about the movement of the own moving object is obtained. And a movement information generating unit that generates and outputs the navigation information. 2. A map information storage unit storing road map information, wherein the moving object is an automobile, and the movement information generating means also uses the stored road map information to obtain information about the movement. The navigation device according to claim 1, wherein the navigation device is configured to generate 3. A vehicle position detecting means for detecting the position of the vehicle, a communication means capable of communicating with a communication means mounted on another vehicle, a map information storage section storing a road map, and the vehicle position. An information transmission unit that transmits the position information of the vehicle detected by the detection unit to another mobile unit, a reception unit that receives the position information transmitted from the communication unit of the other vehicle, and accumulates the position information of the other vehicle. Other vehicle route identifying means for identifying the continuity of the position information of the other vehicle on the road map as another vehicle route, and superimposing the other vehicle route and the own vehicle position information on the road map. A navigation device comprising: a display unit that displays simultaneously. 4. A turn determination unit for determining that the own vehicle has turned at an intersection, a travel distance calculation unit for calculating a distance traveled by the own vehicle from the time when the own vehicle position information is transmitted, and own vehicle position information. And a timekeeping unit for measuring an elapsed time from the time when the time is transmitted, and at least any one of a time when the calculated distance of the travel distance calculation unit exceeds a predetermined distance or a time when the time measured by the timekeeping unit exceeds a predetermined time. And a timing determination unit that determines that the time when the turn determination unit determines the turn is the timing for transmitting the vehicle position information,
The navigation device according to claim 3, further comprising: 5. A detection means for comparing another vehicle route and own vehicle position information to detect whether the own vehicle position information is on the other vehicle route, and an intersection for detecting an intersection where the other vehicle turns. A detection unit, a distance calculation unit that calculates the distance between the own vehicle position information and the intersection, the own vehicle is on the other vehicle route, and the calculation result of the distance calculation unit is less than or equal to a predetermined distance. 5. The navigation device according to claim 3, further comprising: a turning direction determining unit that determines a turning direction that follows the other vehicle route, and an instruction unit that instructs a driver of the turning direction. . 6. A detecting means for comparing the other vehicle route with the own vehicle position information to detect whether the own vehicle position information is on the other vehicle route, and a change in the detection result of the detecting means. The navigation device according to claim 3, 4 or 5, further comprising: a state change determination means; and a notification means for notifying a driver of a determination result of the state change determination means. 7. A voice call microphone, a voice receiving speaker, and a changeover switch are provided, and when the call changeover switch is in the first state, the own vehicle position information is transmitted and the other vehicle position information is received through the communication means. 4. When the call changeover switch is in the second state, the communication means, the voice call microphone, and the voice receiving speaker hold a voice conversation between the own vehicle and another vehicle. The navigation device according to 4, 5, or 6.