JP4093635B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device, and more particularly, to a navigation device capable of avoiding a situation in which the traveling time becomes long due to waiting for a signal or the like while traveling on a searched route.
[0002]
[Prior art]
The number of automobiles equipped with navigation devices that support driving has increased in recent years, but the required time increases even if the vehicle is traveling on a searched route because there are many signals on the route. There is a case.
In order to solve the above problem, a navigation device (Japanese Patent Laid-Open No. 8-320994) capable of searching for a route along the control direction in which the traffic signal is lit in blue or a route with the shortest waiting time in the traffic signal. A navigation device capable of searching (Japanese Patent Laid-Open No. 8-315290) has already been proposed.
[0003]
[Problems to be solved by the invention]
However, traffic conditions change from moment to moment, and even if the lighting time of traffic signals is taken into consideration, the route searched before departure is not always optimal.
The present invention has been made in view of the above problems, and provides a navigation device capable of providing an appropriate detour according to a traffic situation provided during traveling on a route searched before departure. Objective.
[0004]
[Means for Solving the Problems]
The navigation device according to the first invention is stored in a storage medium storing road information, point registration means for registering a departure point and a destination point from points stored in the storage medium, and a storage medium. Route search means for searching for a route connecting the departure point and destination point registered by the point registration means from among the routes, and the vehicle position for detecting the current position of the vehicle based on the output of the direction sensor, distance sensor, and GPS Based on the detection means, the vehicle position detected by the own vehicle position detection means and the route searched by the route search means, the route guidance means for guiding the future travel route of the own vehicle, and the route search means Bei recognizing traffic condition recognizer whether the traffic pause mode is generated based on the vehicle of the traffic situation on the route, and an output means for outputting the recognized traffic availability traffic condition recognizer, the The is traffic condition recognizer, a high probability that the traffic pause mode occurs when there is a right turn intersection on the searched route by the route searching means.
[0005]
In the present invention, it is recognized whether or not a passage suspension state has occurred on the route searched before the start of traveling.
A navigation device according to a second invention is stored in a storage medium storing road information, point registration means for registering a departure point and a destination point from points stored in the storage medium, and a storage medium. Route search means for searching for a route connecting the departure point and destination point registered by the point registration means from among the routes, and the vehicle position for detecting the current position of the vehicle based on the output of the direction sensor, distance sensor, and GPS Based on the detection means, the vehicle position detected by the own vehicle position detection means and the route searched by the route search means, the route guidance means for guiding the future travel route of the own vehicle, and the route search means Traffic status recognition means for recognizing whether a traffic suspension state occurs based on the traffic status of the vehicle on the route, output means for outputting the traffic status recognized by the traffic status recognition means, and traffic status recognition And a detour search means for searching for a detour route that bypasses the passage suspended state occurrence point when the traffic pause state is recognized to occur in unit, wherein the traffic condition recognizer, in the route search unit When there is a right turn intersection on the searched route, the probability that the temporary stop state will occur is set high .
[0006]
In the present invention, when a passage suspension state occurs, a detour to avoid it is searched.
The navigation device according to a third aspect of the present invention is the case where the vehicle position detected by the vehicle position detection means after the bypass search is executed by the bypass search means is not on the bypass searched by the bypass search means. Further included is a detour correction unit for returning the route guided by the route guidance unit to the route before the detour search, or executing the detour search again by the detour search unit.
[0007]
In the present invention, when the detour is not traveled after the detour search, the travel path is returned to the original travel path, or the detour is re-searched.
The navigation device according to the fourth aspect of the present invention determines the probability that the traffic condition recognition means will encounter a traffic suspension state based on the green signal lighting time and the red signal lighting time of the traffic signal.
[0008]
In the present invention, the probability of encountering the temporary suspension state is determined based on the green light lighting time and the red light lighting time of the traffic signal.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a configuration diagram of a navigation apparatus according to the present invention, which is configured as a microcomputer system.
That is, the navigation device is composed of a CPU 11, a ROM 12, a RAM 13, an interface 14, an input device 15, a CD-ROM interface 16, a graphic controller 17, a display controller 18 and an audio controller 19 with a bus 10 as a center.
[0010]
The interface 14 includes a direction sensor 141 for detecting a direction, a distance sensor 142 for detecting a travel distance, a GPS (Global Positioning System) 143 for detecting the geographical position of the host vehicle, and traffic information provided wirelessly in the form of digital data. Is connected to the receiver 144.
The input device 15 is a keypad, a touch panel, or the like, and is used for a user to input a command to the navigation device.
[0011]
The CD-ROM interface 16 reads information such as a road map recorded on a CD-ROM 162 mounted on the CD-ROM driver 161 and provides it to the navigation device.
The graphic controller 17 reads the graphic information stored in the graphic memory 171 and provides it to the navigation device.
[0012]
The display controller 18 displays the information generated by the navigation device on the display device 181 as graphic information, and the voice controller 19 outputs the information generated by the navigation device from the speaker 191 as voice information.
FIG. 2 is a system configuration diagram of the navigation device according to the present invention. When a departure point and a destination point are input from the input device 15 before the vehicle travels, a map recorded on the CD-ROM 162 is referred to. The point registration means 21 registers the departure point and the destination point, and the route search means 22 searches for a route between the departure point and the destination point. The searched route is displayed on the display device 181 through the output unit 23, for example.
[0013]
When the vehicle starts traveling along this route, the vehicle position detection means is based on the direction detected by the direction sensor 141, the travel distance detected by the distance sensor 142, and the current vehicle position detected by the GPS 143. The vehicle position is detected at 24 and guided to travel on the route searched by the route guidance means 25. This guidance information may be displayed on the display device 181 via the output means 23, or may be output by the speaker 191 as a voice such as “turn left at the intersection 100m ahead”.
[0014]
Then, when the traffic situation is received in the digital data format via the receiver 144 during traveling, the traffic condition recognition means 26 determines whether or not there is an obstacle that is expected to take time due to traffic congestion. If there is a failure, it is determined whether the point is ahead of a predetermined distance of the vehicle.
Then, if applicable, that effect is displayed on the display device 181 via the output means 23 or outputted from the speaker 191.
[0015]
It is also possible to search for a detour by executing a route search anew by the route search means 22 with the current vehicle position as the departure point and an appropriate point passing the traffic congestion point as the destination.
FIG. 3 is a flowchart of a first traffic state guidance routine executed by the CPU 11 and is executed every time traffic information is received.
[0016]
That is, it is determined in step 31 whether or not a traffic situation has been received. If a negative determination is made, that is, if no traffic situation has been received, this routine is directly terminated.
Conversely, when an affirmative determination is made at step 31, that is, when a traffic situation is received, the routine proceeds to step 32, where it is determined by the route guidance means 24 whether the vehicle is traveling on the searched route.
[0017]
When a negative determination is made at step 32, that is, when the vehicle is not traveling on the searched route, this routine is directly terminated. Conversely, when an affirmative determination is made at step 32, that is, when the host vehicle is traveling on the searched route, it is determined at step 33 whether there is a failure within a predetermined distance ahead of the host vehicle.
When a negative determination is made at step 33, that is, when there is no obstacle within a predetermined distance ahead of the host vehicle, this routine is directly terminated. Conversely, in step 34, the time required to arrive at the failure point is calculated.
[0018]
Next, at step 35, it is determined whether or not the vehicle is temporarily stopped at the failure point. If a negative determination is made, this routine is directly terminated. Conversely, when an affirmative determination is made in step 35, that is, when there is a possibility that the passage is temporarily stopped at the failure point, it is determined in step 36 whether or not the point where the passage stop state is in front of the host vehicle.
If a negative determination is made in step 36, that is, if the point of occurrence of the temporary suspension is not in front of the vehicle, this routine is directly terminated. Conversely, when an affirmative determination is made in step 36, that is, when the point of occurrence of the temporary suspension is in front of the host vehicle, it is determined in step 37 whether or not a bypass search is to be executed. Note that whether or not to perform a detour search may be selected by operating a dedicated switch, even if the passenger inputs from the input device 15.
[0019]
When a negative determination is made at step 37, that is, when a bypass search is not requested, the routine proceeds to step 38, where a "passage stop alarm" is output and this routine is terminated. Here, the alarm can include the distance to the occurrence point of the traffic suspension state, the cause thereof, and the distance of the section in which the traffic suspension state occurs.
For example, a message “Natural traffic jam continues for 1 km ahead of this 5 km” is output from the speaker 191.
[0020]
Conversely, when an affirmative determination is made in step 37, that is, when a detour search is requested, a detour search is executed in step 39 and this routine is terminated.
The detour search is performed by the route search means by registering in the point registration means 21 with the current position of the host vehicle as the departure point and an appropriate point beyond the obstacle point as the destination point. This detour search result is output from at least one of the display device 181 and the speaker 191 via the output means 23.
[0021]
In the above traffic condition guidance routine, the traffic condition guidance is executed when traffic information is received, but the traffic condition guidance may be executed when the vehicle stops at an intersection or passes through an intersection.
When the obstacle is a traffic signal, the blue lighting time and the red lighting time of the traffic signal are reflected in the determination in the determination of “Is the traffic temporarily suspended?” It is necessary to make it. In other words, if the lighting time of the green light is sufficiently long compared to the lighting time of red, it will be reflected in the judgment that “the traffic will not be paused”, and the lighting time of the red light will be compared with the lighting time of blue. If it is sufficiently long, it is necessary to reflect it in the judgment that “the traffic is suspended”.
[0022]
FIG. 4 is a flowchart of a second traffic state guidance routine applied when the obstacle is a traffic signal. Steps 41 and 42 are executed instead of steps 33 and 34 of the first traffic state guidance routine of FIG. Is done.
That is, when an affirmative determination is made at step 32, the process proceeds to step 41, and when the vehicle is traveling on the searched route, it is determined whether there is a traffic signal within a predetermined distance ahead.
[0023]
When the determination at step 41 is negative, this routine is directly terminated. Conversely, when an affirmative determination is made in step 41, the process proceeds to step 42, and the probability that the traffic is temporarily stopped is calculated based on the lighting time of the red and blue traffic lights.
If the calculated probability is greater than a predetermined threshold value, an affirmative determination is made in step 35 as a passage suspension condition, and a negative determination is made in step 35 as a passage suspension condition if the calculated probability is small. .
[0024]
As the information on the lighting time of the traffic signal, it is possible to use a fixed value recorded in advance on the CD-ROM 162, or it is possible to use a lighting time learning value learned every time it passes through the intersection. is there. Further, information about the lighting time of the traffic signal may be extracted from the data received by the receiver 144.
In addition, when turning left at an intersection, it is a factor that lowers the probability of “passing suspension”, and when turning right, it is also a factor that increases the probability of “passing suspension”. Is possible.
[0025]
FIG. 5 is a flowchart of a third traffic state guidance routine executed by the CPU 11. Steps 51 to 53 are added to the first traffic state guidance routine of FIG.
That is, when the detour search is executed in step 39, the flag B indicating that the detour search has been executed is set to "1" in step 51. Note that the flag B is set to “0” in an initialization routine (not shown).
[0026]
That is, if a negative determination is made in step 32 whether the vehicle is on the searched route, it is determined in step 52 whether the flag B is “1”, and if a negative determination is made, this routine is terminated. To do.
Conversely, when an affirmative determination is made in step 52, that is, when a bypass search has already been executed, it is assumed that the driver has not intentionally traveled on the bypass despite showing the bypass. After the flag B is set to “0” at 53, the routine proceeds to step 39 and the detour search is executed again.
[0027]
FIG. 6 is a flowchart of the fourth traffic state guidance routine executed by the CPU 11, and step 61 is executed instead of step 53 of the second traffic state guidance routine of FIG.
That is, when affirmative determination is made in step 52, the driving route of the host vehicle was initially searched in step 61 on the assumption that the driver did not intentionally travel on the bypass route despite showing the bypass route. Return to the path and end this routine.
[0028]
【The invention's effect】
According to the navigation device according to the first aspect of the present invention, it is possible to recognize whether or not a passage suspension state has occurred on the route searched before the start of traveling.
With the navigation device according to the second aspect of the present invention, it is possible to search for a detour for avoiding a temporary suspension state when the passage has occurred.
[0029]
According to the navigation device of the third invention, it is possible to return the travel route to the original travel route when the vehicle is not traveling on the detour after searching for the detour, or to search again for the detour.
According to the navigation device according to the fourth aspect of the present invention, it is possible to determine the probability of encountering a traffic suspension state based on the green signal lighting time and the red signal lighting time of the traffic signal.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a navigation device according to the present invention.
FIG. 2 is a functional diagram of the navigation device according to the present invention.
FIG. 3 is a flowchart of a first traffic state guidance routine.
FIG. 4 is a flowchart of a second traffic state guidance routine.
FIG. 5 is a flowchart of a third traffic state guidance routine.
FIG. 6 is a flowchart of a fourth traffic state guidance routine.
[Explanation of symbols]
141 ... Direction sensor 142 ... Distance sensor 143 ... GPS
144 ... receiver 15 ... input device 181 ... display device 191 ... speaker 21 ... spot registration means 22 ... route search means 23 ... output means 24 ... own vehicle position detection means 25 ... route guidance means 26 ... traffic situation recognition means

Claims (18)

Route search means for searching for a route connecting the departure point and the destination point based on road information;
Own vehicle position detecting means for detecting the current position of the own vehicle;
Route guidance means for guiding the traveling path of the vehicle based on the vehicle position detected by the vehicle position detection means and the route searched by the route search means;
Recognizing traffic condition recognizer whether the traffic pause mode is generated based on the vehicle of the traffic situation on the route searched by said route searching means,
Output means for outputting guidance according to recognition by the traffic situation recognition means ,
A navigation device in which the traffic situation recognition means increases the probability that the traffic suspension state will occur when a right turn intersection exists on the route searched by the route search means . Route search means for searching for a route connecting the departure point and the destination point based on road information;
Own vehicle position detecting means for detecting the current position of the own vehicle;
Route guidance means for guiding the traveling path of the vehicle based on the vehicle position detected by the vehicle position detection means and the route searched by the route search means;
A traffic situation recognition means for recognizing whether a traffic suspension state occurs based on the traffic situation of the vehicle on the route searched by the route search means;
Output means for outputting guidance according to recognition by the traffic situation recognition means;
And a detour search means for searching for a detour route that bypasses the passage suspended state occurrence point when the traffic pause state is recognized to occur in the traffic condition recognizer,
A navigation device in which the traffic situation recognition means increases the probability that the traffic suspension state will occur when a right turn intersection exists on the route searched by the route search means .   The navigation device according to claim 2, further comprising setting means for setting whether or not the detour search means functions.   In the case where the vehicle position detected by the vehicle position detection means after the bypass search by the bypass search means is not on the bypass searched by the bypass search means, the route guidance means 3. The navigation apparatus according to claim 2, further comprising a detour correction unit that returns the route to be guided to the route before the detour search, or executes the detour search again by the detour search unit. The traffic situation recognition means
The navigation device according to any one of claims 1 to 4 is intended to recognize the traffic pause condition occurring ahead in the traveling direction of the detected vehicle position at the vehicle position detecting means. The output means is
Claim 1 based on the detected vehicle position at the vehicle position detecting means as those already vehicle outputs a traffic situation which is recognized by the traffic condition recognizer even when the a traffic suspended state 5. The navigation device according to any one of items 1 to 4. The output means is
The navigation device according to any one of claims 1 to 6, wherein the traffic situation is output by voice. The output means is
8. The navigation device according to claim 7, wherein at least one of a distance to the occurrence point of the traffic pause state, a cause of the traffic pause state, and a distance of the traffic pause state section is output by voice. The traffic situation recognition means
The one of the Claims 1-8 which recognizes the said traffic temporary stop state which generate | occur | produces within the preset distance of the advancing direction of the own vehicle position detected by the said own vehicle position detection means. Navigation device. The traffic situation recognition means
Wherein any one of claims 1 wherein the passage is intended to recognize the temporary stop condition occurring in reachable point within a preset time from the detected vehicle position at the vehicle position detecting means 8 The navigation device described. The traffic situation recognition means
The navigation device according to claim 1, wherein a probability of encountering the traffic suspension state is determined based on a green signal lighting time and a red signal lighting time of a traffic signal. The traffic situation recognition means
The navigation device according to claim 11, wherein the green signal lighting time and the red signal lighting time of the traffic signal stored in the storage medium are used. Further comprising learning means for learning a green light lighting time and a red light lighting time of a traffic signal installed at the intersection every time passing through the intersection,
The navigation device according to claim 11, wherein the traffic condition recognition means uses the green light lighting time and the red light lighting time of the traffic signal learned by the learning means. The traffic situation recognition means
It further comprises lighting time information receiving means for receiving information on the green light lighting time and the red light lighting time of the traffic signal,
The navigation apparatus according to claim 11, wherein the green signal lighting time and the red signal lighting time of the traffic signal received by the lighting time information receiving unit are used. The traffic situation recognition means
The navigation device according to claim 1 or 2, wherein a determination is made as to whether or not the passage suspension state occurs every time a passage state is received from a communication medium. The traffic situation recognition means
The navigation device according to claim 1 or 2, wherein a determination is made as to whether or not the passage temporary stop state occurs every time the vehicle stops at an intersection. The traffic situation recognition means
The navigation device according to claim 1 or 2, wherein a determination is made as to whether or not the passage suspension state occurs every time an intersection is passed. The traffic situation recognition means
The navigation device according to claim 1 or 2, wherein a determination is made as to whether or not the traffic suspension state occurs each time at least one event of receiving a traffic situation from a communication medium, stopping at an intersection, or passing through an intersection occurs.

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