JP2009121876A - System, method and program for navigation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation technique which enables passengers to go on board at ease by informing the passengers about appropriate information even in the case that the passengers have deviated from a route while guidance about the route is being performed. <P>SOLUTION: A navigation system N includes a HDD 7 in which route data is stored; a route setting part 42 for setting a route to guide about on the basis of the route data; and a display 8 capable of displaying a map with the route. The navigation system N includes a deviation detection part 45 for detecting that a self-vehicle has deviated from a route; a cause determination part 47 for determining a cause of deviations in the case that the deviation detection part 45 has detected that the self-vehicle has deviated from the route; a report information generating part 50 for generating information reporting the cause determined by the cause determination part 47; and a report information output part 51 for outputting report information by a speaker 9 by speech. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device, a navigation method, and a navigation program used in a moving body that travels with customers such as taxis.

  In recent years, with the generalization of automobiles and the development of information processing technology, navigation devices typified by in-vehicle use are rapidly spreading. In general, the navigation device performs route search and guidance as follows. That is, the current position (latitude, longitude, etc.) and traveling direction of the vehicle are calculated from the outputs of the geomagnetic sensor, the vehicle speed sensor, the GPS sensor, and the like by position detection calculation by a computer for navigation control.

  Then, a route search operation such as Dijkstra's method by a computer searches for the optimum route from the current position to the designated destination based on the route data included in the navigation data stored in the DVD or HDD. Set as the route to be guided. Further, the computer travels while displaying the map data of the section including the current position of the vehicle on the screen of the display device among the navigation data based on the current position, the set route, etc. obtained as described above. Guidance and guidance of the own vehicle.

  By the way, in recent years, taxi vehicles equipped with the above navigation devices are also increasing. In the case of a service in which passengers are transported to a destination such as a taxi, the passengers are expected to arrive at the destination as soon as possible and to pay a low cost. Therefore, if the route can be searched by the navigation device so that the taxi can arrive at the destination at the shortest and fastest speed, a service favorable for the passenger can be provided. Furthermore, by using traffic information obtained from traffic information such as VICS and avoiding traffic congestion, it is possible to select an optimal route corresponding to an actual event, so that the service can be further improved.

In this way, for taxi passengers, the fare (taxi fee) to the destination is calculated using the navigation technology when the passenger gets in, considering that the fare is a big concern. An apparatus to be presented is disclosed (see Patent Documents 1 to 3).
JP-A-11-283062 JP 2002-162242 A JP 2005-172777 A

  By the way, even if it is a taxi using a navigation apparatus as mentioned above, a driver does not necessarily run along a set route. In other words, at the discretion of the driver on the spot, the vehicle may run on a different course from the set route, or may mistakenly go straight ahead even though it is an intersection that should turn left or right on the set route.

  On the other hand, the passenger thinks that the navigation device guides the shortest distance and the fee is also the minimum amount, so if the driver dares to change the driving course, the driver deliberately makes a detour and charges There is a concern that troubles may occur due to the fact that they are trying to increase the price.

  In this way, when there is a deviation from the set route, the conventional navigation device recalculates the route and tries to return to a deviated point, or if it does not return, it gives an instruction to turn at the next intersection. There is a reroute function. In this case, even if a message such as `` I'm off the route '' or `` I will recalculate '' is displayed or voice guidance is given, passengers deliberately make a detour or make a detour to see if the driver has missed the route I cannot judge whether I am trying to increase the amount. Therefore, the presence of a navigation device that should improve convenience may cause distrust to the driver.

  The present invention has been proposed in order to solve the above-described problems of the prior art, and the purpose of the present invention is to guide passengers even when they are out of their way. It is to provide a navigation device, a navigation method, and a navigation program that allow passengers to get on safely by notifying appropriate information.

In order to achieve the above object, the invention of claim 1 is directed to a route data storage means for storing route data, a route setting means for setting a route to be guided based on the route data, and a map together with the route. In a navigation device having a display means capable of detecting a moving object from the route, and detecting the moving member from the route detected by the detecting means. It has a cause determining means for determining, and a cause notifying means for notifying the cause determined by the cause determining means. The present invention can also be understood as a method for realizing the above functions by a computer and a program to be executed by the computer.
In the invention as described above, even if the moving body deviates from a preset route, the cause is notified to the passenger, so that the passenger can get on safely.

According to a second aspect of the present invention, in the navigation device of the first aspect, the cause determining means determines whether to avoid a traffic obstacle or to make an error of a mobile operator based on the presence or absence of a factor that impedes traffic. It is characterized by doing.
In the invention as described above, even when the moving body deviates from a preset route, the passenger knows whether the cause is to avoid a traffic fault or the error of the moving body operator. It is easy for passengers to understand.

According to a third aspect of the present invention, in the navigation device according to the first or second aspect, a charge information storage means storing a charge calculation standard for transporting passengers by a moving body, the route information, and the calculation reference Based on this, it has a charge calculation means for calculating a charge to be borne by the passenger, and a charge information notification means for reporting the charge.
In the invention as described above, the passenger can confirm the fee required to reach the destination, so that the passenger can use it with peace of mind.

According to a fourth aspect of the present invention, in the navigation device according to any one of the first to third aspects, the detection unit detects that the moving body has deviated from the route, and the route setting unit sets a new route. In this case, there is provided a correction information notifying means for notifying information related to correction of a fee borne by the passenger.
In the invention as described above, even when the moving object is deviated from the set route and the route is reset, the information about the correction of the fee (changed, no change, etc.) can be obtained, so that the passenger is easy to be relieved.

  According to the present invention as described above, even when the route is being guided, even if the route is deviated, the navigation device and the navigation device that allow the passenger to get on safely by notifying the passenger of appropriate information Methods and navigation programs can be provided.

  Next, the best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be specifically described with reference to the drawings. In addition, although this embodiment is realizable by controlling the computer provided with the peripheral device by the program, the implementation | achievement aspect of the hardware and program in this case can be variously changed. The present invention can also be understood as a program as described above and a computer-readable storage medium storing such a program. Therefore, in the following description, virtual circuit blocks that realize the functions of the present invention and the present embodiment are used.

[Constitution]
The configuration of this embodiment will be described with reference to FIG. First, since the navigation device N performs general route search and guidance functions, the absolute position / azimuth detection unit 1, the relative direction detection unit 2, the vehicle speed detection unit 3, the main CPU and its peripheral circuit 4, and the ROM 5 , RAM 6, hard disk drive (HDD) 7, display 8, speaker 9, operation input unit 10, optical / radio wave beacon receiving unit 11, FM multiplex broadcast receiving unit 12, traffic information processing unit 13, and the like.

  The absolute position / orientation detection unit 1 is used to calculate the absolute position coordinates and direction on the ground surface of a taxi (referred to as the own vehicle) equipped with a navigation device for the current position of the own vehicle, that is, the own vehicle position. For example, it is a part for receiving GPS radio waves transmitted from GPS satellites with an antenna or a receiver. The relative orientation detection unit 2 is a part for detecting the relative orientation of the host vehicle using a gyro or the like. Moreover, the vehicle speed detection part 3 is a part which calculates the speed of the own vehicle by processing the vehicle speed pulse obtained from a motor vehicle.

  The HDD 7 is means for reading various data such as navigation data recorded on a hard disk which is a large-capacity storage medium. Note that as the large-capacity storage medium, any medium that can be used at present or in the future, such as a CD-ROM or a DVD-ROM, can be used, and a reader corresponding to the medium is connected.

  As navigation data, for example, route data in a predetermined format, map data relating to a displayed map, search data for searching various points, and the like are stored. The route data is mainly composed of nodes (points) indicating intersections / branches and links (lines) indicating routes (roads) connecting the nodes. Each link has a unique number that identifies the link (link ID), link length, type (national road, prefectural road, etc.), link road width and lane, pay / free, traffic restrictions, etc. Has been granted. As the search data, data for searching by address, telephone number, or genre can be considered, and the data searched by this can be set as a destination.

  The main CPU and its peripheral circuit 4 are parts that serve as a control circuit that controls the entire navigation device N. ROM 5 and RAM 6 show various storage means necessary for the operation of the navigation device N in a simplified manner. The ROM 5 indicates a read-only memory, and the RAM 6 indicates a writable memory, but the type of memory to be specifically used is arbitrary.

  For example, in SRAM (static RAM), in addition to various settings such as the current position, home, destination, route, etc., traffic information, criteria for determining the cause of a departure from the route, fee calculation criteria, notification information pattern, etc. It can function as storage means for storing. These pieces of information may be stored in the hard disk of the HDD 7. A part of the information recorded on the hard disk may be stored in the ROM 5 or the RAM 6.

  The display 8 is means for displaying various information such as a map, an operation menu, and a message on the screen. The speaker 9 is a means for performing voice guidance by voice output. The operation input unit 10 is a remote control unit for a user to perform various operation inputs, a microphone, a touch panel (display 8), a switch provided on the front panel, and the like. The operation input unit 10 also includes means for inputting an operation instruction by voice such as a microphone.

  The optical / radio beacon receiving unit 11 is means for receiving and processing information such as identification information of each beacon and traffic information of the VICS service from an optical beacon or a radio beacon installed on the route. The FM multiplex broadcast receiver 12 is means for receiving FM broadcast waves and extracting desired data such as VICS service traffic information from the broadcast waves. The traffic information received by the optical / radio wave beacon receiving unit 11 and the FM multiplex broadcast receiving unit 12 is converted into a format suitable for the navigation device N by the traffic information processing unit 13, and is transmitted to the main CPU and its peripheral circuit 4. Entered. Here, the traffic information includes various information related to road travel, such as traffic jam information, accident information, and traffic regulation (time regulation and traffic closure) information.

  Further, the main CPU and its peripheral circuit 4 are configured to realize the roles as the following parts shown in FIG. That is, the current position detection unit 40 is means for sequentially calculating the own vehicle position. The destination setting unit 41 is a means for setting a destination by facility search from search data, cursor designation on a map, or the like. The route setting unit 42 calculates a route from the current position detected by the current position detection unit 40 to the destination set by the destination setting unit 41 based on the route data, and is obtained as a result. It is a means for setting the route.

  The route calculation basically uses a route data node, link information, etc. to calculate a value (road cost) indicating ease of passing, and the total of the road cost from the starting point to the destination is the smallest. The sequence of links connected in such a manner is used as a route search solution. At this time, it is possible to select a route that does not contradict the restriction by using traffic restriction information such as entry prohibition or one-way traffic. Further, it is possible to select a more optimal route by changing the value of the road cost using the traffic jam information obtained from VICS or the like.

  The guidance control unit 43 processes various information for executing navigation according to the set route. Based on the information output from the guidance control unit 43, the display processing unit (map) 44 is based on the vehicle position, map data, and the like, and at least one of the vehicle position on the surrounding map and the traveling or desired route. Is a means for displaying the part on the display 8 in a planar, three-dimensional or other manner.

  Further, the main CPU and its peripheral circuit 4 include a disconnection detection unit 45, a route determination unit 46, a cause determination unit 47, a fee processing unit 48, a display processing unit (fee) 49, a notification information generation unit 50, and a notification information output unit 51. Etc. The deviation detection unit 45 is a means for detecting whether or not the vehicle has deviated from the route based on the set route and the current position of the vehicle.

  The route determination unit 46 detects that the traveling position of the vehicle has deviated from the set route and the route setting unit 42 recalculates the route when the departure detection unit 45 detects that the route has been set. Is means for determining whether or not the route has been extended from the previously set route.

  The cause determination unit 47 is a means for determining the cause when the vehicle deviates from the set route. This determination is, for example, determined as traffic jam avoidance when a traffic jam exists within a predetermined distance in the traveling direction of the original route from the deviated position based on the traffic jam information. Similarly, when there is a road closure due to an accident within a predetermined distance, it is determined that the road is closed due to an accident. If there is a traffic restriction due to time restrictions (for example, a school zone), it is determined that the traffic restriction is avoided due to time restrictions. In particular, if there is no reason to avoid it on the route, if it deviates from the route, it is determined as a driver error.

  The fee processing unit 48 is a means for calculating a fee. The process for calculating the charge includes a process for calculating the charge when traveling on the set route according to a preset criterion, a process for charging according to the actual travel, or a process for not charging. The display processing unit (fee) 49 is means for causing the display 8 to display the fee calculated by the fee processing unit 48 and the fee charged.

  The notification information generation unit 50 is a unit that generates information for notifying the customer, such as information on the cause of the off-route determined by the cause determination unit 47 and information on correction of charges. For example, based on a preset pattern, a message (text, synthesized speech, etc.) informing that a detour is made to avoid traffic congestion is generated. The notification information output unit 51 is means for causing the speaker 9 to output the message generated by the notification information generation unit 50 by voice or displaying the message on the display 8 as character information.

[Action]
The operation of the present embodiment as described above will be described with reference to the flowchart of FIG. 2 and display screen examples of FIGS. In other words, when the destination designated by the passenger sets the destination by operating the operation input unit 10, the route is set by the route setting unit 42. Further, the fee processing unit 48 calculates a fee when traveling on the set route to the destination. Then, from the speaker 9, for example, the message “I will guide you to the destination. The fee is approximately XX yen. Please understand that the fee will vary depending on the traffic congestion.” The guidance is started according to the running.

  Normally, for example, as shown by the thick line in FIG. 3, the shortest route from the vehicle position A to the destination C is set and guidance is performed. Here, when the driver goes straight at the intersection B without turning right at the intersection, it is detected by the deviation detection unit 45 that the vehicle has deviated from the route, and the route setting unit 42 recalculates the route (step 01). ).

  Thereby, for example, a new route is set as shown by the thick line in FIG. 4 (step 02). Even when the traffic information obtained from the traffic information processing unit 13 is updated, a new route may be set by recalculating the route to the destination. For example, as shown by a thick arrow in FIG. 5, a traffic jam point D is displayed on the route based on traffic information obtained from the traffic information processing unit 13, and the vehicle passes the passing point B so as to avoid this. It is recalculated when it goes off the route.

  Thus, when a passenger sees a screen on which a newly set route is displayed, the passenger is likely to have doubts because it is clearly a detour. In particular, if the mileage is long and the fare increases despite the driver's mistake, he / she wants the passengers to stop paying for the extra time.

  After the resetting, the route determination unit 46 determines that the travel distance has been extended for the newly set route compared to the previously set route (step 03). Then, the cause determination unit 47 determines the cause of the departure from the route, and the notification information output unit 51 outputs the message generated by the notification information generation unit 50 to the speaker 9 and the display 8 based on the result. .

  First, when the cause determination unit 47 determines that the route is out of order for avoiding traffic congestion (step 04), a message generated by the notification information generation unit 50 is output from the speaker 9 by the notification information output unit 51. At the same time, it is displayed on the display 8 (step 05). For example, the voice guidance “There is a traffic jam point in the future. Avoid the traffic jam. Thereby, the passenger can know that it is a route change for traffic jam avoidance.

  Similarly, when the cause determination unit 47 determines that an accident or time restriction has occurred and has encountered a closed road (step 06), a message to that effect is output from the speaker 9 and displayed on the display. (Step 07). For example, there is a voice guidance such as “Closed due to an accident in the future. Please understand that you will make a detour and detour a little.” Or “Please note that this is a school zone. Made. Thereby, the passenger can know that it is a route change for traffic regulation avoidance.

  Furthermore, for example, as shown by the thick line in FIG. 6, when there is no reason for avoiding traffic jams and the vehicle goes straight on at the intersection (passing point B) to turn right, the recalculation function works, There may be a case where the driver returns to the original intersection by passing through a street. When returning to a point that deviates in this way (step 08), for example, “You have passed the intersection. Please be assured that you will not be charged until you return to the original intersection.” (Step 09) ).

  Further, when the distance to the intersection that has passed is long, the route may be redrawn from that point without returning to the intersection (step 08). In such a case, voice guidance will be sent to the customer, saying “We have changed to a new route for the convenience of the driver. Please be assured that the billing information will not be updated without changing the route” (step 10). In this way, by notifying passengers of information relating to fee correction, consideration is given so that passengers do not feel distrust. In the case of a deviation due to such a driver's mistake, the charge processing unit 48 does not charge for the extension of the route as notified to the passenger.

[effect]
According to the present embodiment as described above, even if the vehicle deviates from a predetermined route and recalculation of the route (reroute) is executed, the cause of the departure from the route is heard by voice or the like. Since it can be notified that the vehicle has not deliberately detoured, the passenger can continue to ride with peace of mind.

  In addition, depending on the cause of the departure from the route, it is also possible to temporarily hold (stop) the billing and inform the passenger that the extra billing caused by the new route will not be performed. There is no risk of dissatisfaction. Furthermore, since the trouble with passengers can be prevented without giving verbal explanations to the driver, the psychological burden is eliminated and the driver can concentrate on driving.

[Other Embodiments]
The present invention is not limited to the embodiment as described above. For example, the determination criterion of the cause when the vehicle deviates from the route, the pattern of the notification information, and the like are not limited to those exemplified in the above embodiment, and it is only necessary to be able to determine the cause and notify the passenger.

  This may also be notified when factors affecting traffic difficulty such as traffic volume, number of lanes, presence / absence of signals, presence / absence of crossings are avoided. Skilled drivers set and input points that should be avoided because there is a high possibility of congestion according to time factors such as time of day, day of the week, and location factors such as commercial facilities. In order to avoid it, you may set so that a passenger may be notified also when deviating from a course.

  Note that the notification may be any one of voice and display. Furthermore, the present invention is not limited to taxis, and can also be applied to moving means for moving other passengers.

It is a functional block diagram which shows an example of a structure of embodiment of this invention. It is a flowchart which shows the flow of the process in embodiment of FIG. It is a figure which shows the example of a display screen of the setting path | route in embodiment of FIG. It is a figure which shows the example of a display screen of the reset path | route in embodiment of FIG. It is a figure which shows the example of a display screen which displayed the traffic congestion location in embodiment of FIG. It is a figure which shows the example of a display screen of the reset route | route which returns to the passing point in embodiment of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Absolute position and direction detection part 2 ... Relative direction detection part 3 ... Vehicle speed detection part 4 ... Main CPU and its peripheral circuit 5 ... ROM
6 ... RAM
7 ... HDD
DESCRIPTION OF SYMBOLS 8 ... Display 9 ... Speaker 10 ... Operation input part 11 ... Light / radio wave beacon receiving part 12 ... FM multiplex broadcast receiving part 13 ... Traffic information processing part 40 ... Current position detection part 41 ... Destination setting part 42 ... Route setting part 43 ... Guide control unit 44 ... Display processing unit (map)
45 ... detachment detection unit 46 ... route determination unit 47 ... cause determination unit 48 ... charge processing unit 49 ... display processing unit (fee)
50 ... Notification information generation unit 51 ... Notification information output unit

Claims (6)

In a navigation device comprising route data storage means for storing route data, route setting means for setting a route to be guided based on the route data, and display means capable of displaying a map together with the route,
Detecting means for detecting that the moving body has deviated from the path;
Cause detection means for determining the cause when the detection means detects that the moving body has deviated from the path; and
Cause notifying means for notifying the cause determined by the cause determining means;
A navigation device comprising:   2. The navigation apparatus according to claim 1, wherein the cause determination means determines whether to avoid a traffic fault or to make an error of a mobile operator based on the presence or absence of a factor that obstructs traffic. A charge information storage means for storing a calculation standard of a charge when transporting passengers by a moving body;
Based on the route information and the calculation criteria, a charge calculation means for calculating a charge to be borne by the passenger,
Rate information notifying means for notifying the rate;
The navigation apparatus according to claim 1, further comprising:   When the detection means detects that the moving body has deviated from the route, and a new route is set by the route setting means, it has a correction information notification means for notifying information relating to the correction of the fee borne by the passenger. The navigation apparatus according to any one of claims 1 to 3, wherein In the navigation method in which the route data storage means stores route data, the route setting means sets a route to be guided based on the route data, and the display means displays a map together with the route.
The detection means detects that the moving body has deviated from the path,
When the cause determining means detects that the moving body has deviated from the route by the detecting means, the cause is determined,
A navigation method characterized in that the cause notification means notifies the cause determined by the cause determination means. In a navigation program for causing a computer to execute processing for storing route data, processing for setting a route to be guided based on the route data, and processing for displaying a map on a display unit together with the route,
In the computer,
Detecting that the moving object has deviated from the path;
When it is detected that the moving body has deviated from the route, the cause is determined,
A navigation program for informing a determined cause.

Images