JP2005127942A - Navigation system for vehicle - Google Patents

Navigation system for vehicle Download PDF

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JP2005127942A
JP2005127942A JP2003365694A JP2003365694A JP2005127942A JP 2005127942 A JP2005127942 A JP 2005127942A JP 2003365694 A JP2003365694 A JP 2003365694A JP 2003365694 A JP2003365694 A JP 2003365694A JP 2005127942 A JP2005127942 A JP 2005127942A
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route
traffic
information
learning
congestion
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JP4235948B2 (en
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Takanori Kachi
孝典 加地
Noboru Ishibashi
登 石橋
Mitsuhiro Futamura
光宏 二村
Kunihiro Yamada
邦博 山田
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Aisin AW Co Ltd
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Aisin AW Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To cope with avoidance of a congestion along with an intention of a user as much as possible. <P>SOLUTION: This navigation system is provided with a present position detecting means 2 for detecting the present position of a vehicle, a travel route learning means 11 for learning a travel route based on the detected present position, a congestion information learning means 12 for learning congestion information occurred on the learnt travel route, a congestion avoiding route searching means 4 for searching a route for avoiding a congestion occurred portion, and a control means 13 for comparing the congestion information acquired from a vehicle outside with the learnt congestion information to output a selection information whether starting up the congestion avoiding route searching means or not, based on a comparison result. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明はよく通る道路上で発生した渋滞や混雑への対処を改善した車両用ナビゲーション装置に関する。   The present invention relates to a vehicular navigation apparatus that has improved handling of traffic jams and congestion that occur on a frequently passing road.

目的地までのルートを探索し、探索されたルートに基づいて案内を行うナビゲーション装置において、ＶＩＣＳ（道路交通情報通信システム）等の車両外部の基地局から交通情報を受信し、渋滞や混雑情報があると自動的にルートの再探索を行い、渋滞回避ルートを探索することが行われている（ＤＲＧＳ：DYNAMIC ROUT GUIDANCE SYSTEM）。このように渋滞情報を受信すると自動的にＤＲＧＳを起動させて回避ルートの探索を行った場合、それまでとは異なる案内が出されるためユーザが戸惑ったり、ユーザが納得できないルートに変更される場合もあり得る。このような不都合を改善するため、ＤＲＧＳの起動により探索された渋滞回避ルートとそれまでの誘導ルートのうちどちちらかをユーザが選択できるようにするものも提案されている（特許文献１）。
特開２００２−９０１６７号公報 In a navigation device that searches for a route to a destination and provides guidance based on the searched route, traffic information is received from a base station outside the vehicle such as a VICS (Road Traffic Information Communication System), and traffic congestion and congestion information If there is, the route is automatically re-searched and a congestion avoidance route is searched (DRGS: DYNAMIC ROUT GUIDANCE SYSTEM). When traffic information is received in this way and DRGS is automatically activated to search for an avoidance route, a different guidance will be issued and the user may be confused or changed to a route that the user cannot understand There is also a possibility. In order to improve such inconvenience, there is also proposed a method that allows the user to select either a traffic jam avoidance route searched by starting DRGS or a previous guidance route (Patent Document 1). .
JP 2002-90167 A

特許文献１などのような渋滞情報を受信すると自動的にＤＲＧＳを起動するナビゲーション装置では、ＶＩＣＳからの限られた情報を基にして回避ルートを探索しているため、必ずしも個々のユーザにとって有益な回避ルート探索ができない場合が生ずる。また、ＶＩＣＳからの情報が得られない路線では、渋滞が発生していてもこれを回避するルートを探索することができない。ＶＩＣＳからの情報が得られても、いつも渋滞している箇所で、かつそこはそのまま通過した方が早いと分かっている箇所であっても条件が整えばユーザの意に反してＤＲＧＳが起動して回避ルートを探索してしまうことになる。   The navigation device that automatically activates DRGS when receiving traffic jam information such as in Patent Document 1 searches for avoidance routes based on limited information from VICS, and is therefore always useful for individual users. There is a case where the avoidance route search cannot be performed. Also, on routes where information from VICS cannot be obtained, it is not possible to search for a route that avoids this even if traffic congestion occurs. Even if information from VICS can be obtained, DRGS will be activated against the user's will if the conditions are met even if it is always congested and it is known that it is faster to pass there as it is Will search for avoidance routes.

本発明は上記課題を解決しようとするものであり、よく走行するルート上での渋滞への対処を可能な限りユーザの意に沿うように行えるようにすることを目的とする。
そのために本発明は、車両の現在位置を検出する現在位置検出手段と、検出された現在位置に基づいて走行したルートを学習する走行ルート学習手段と、学習した走行ルート上で発生する渋滞情報を学習する渋滞情報学習手段と、渋滞発生箇所を回避するルートを探索する渋滞回避ルート探索手段と、車両外部から取得した渋滞情報と学習した渋滞情報とを比較し、比較結果に基づいて渋滞回避ルート探索手段を起動するか否かの選択情報を出力する制御手段とを備えたことを特徴とする。 SUMMARY OF THE INVENTION The present invention is intended to solve the above-described problems, and an object of the present invention is to make it possible to cope with a traffic jam on a route that frequently travels as much as possible.
For this purpose, the present invention provides a current position detection means for detecting the current position of the vehicle, a travel route learning means for learning a route traveled based on the detected current position, and congestion information generated on the learned travel route. The traffic jam information learning means to learn, the traffic jam avoidance route search means to search for the route to avoid the traffic jam occurrence location, the traffic jam information acquired from outside the vehicle and the learned traffic jam information are compared, and the traffic jam avoidance route based on the comparison result And control means for outputting selection information as to whether or not to start the search means.

本発明は、よく通る道路では渋滞や混雑発生箇所、渋滞原因などの渋滞情報を学習していて、そこを通らざるを得ないことが分かっている場合、外部から渋滞情報を取得しても、既に学習している渋滞情報ではユーザに知らせることがなく、学習した渋滞情報と異なる突発的渋滞情報を取得した場合のみユーザに通知し、回避ルートの探索を行を行うので、可能な限りユーザの意に沿うように渋滞回避への対処を行うことができる。   The present invention learns traffic jam information such as traffic jams and congestion locations, traffic jam causes on the roads that pass frequently, and if you know that you have to pass there, even if you acquire traffic jam information from the outside, The traffic information that has already been learned is not notified to the user, and the user is notified only when sudden traffic information that is different from the learned traffic information is acquired, and a search for an avoidance route is performed. It is possible to deal with traffic jam avoidance as intended.

以下、実施の形態について説明する。
図１は本実施形態に係るナビゲーション装置の例を示す図である。出発地や目的地等の経路案内に関する情報を入力する入力装置１、自車両の現在位置に関する情報を検出する現在位置検出装置２、地図データ、経路の探索に必要なナビゲーション用データ、経路案内に必要な表示／音声の案内データ、さらに地図の表示、経路探索、音声案内等の案内を行うためのプログラム（アプリケーション及び／又はＯＳ）等が記録されている情報記憶装置３、ナビゲータ処理手段として地図の表示処理、経路探索処理、経路案内に必要な表示／音声案内処理、さらにシステム全体の制御を行う中央処理装置４、車両の走行に関する情報である、例えば道路情報、交通情報を送受信したり、車両の現在位置に関する情報を検出したり、さらに現在位置に関する情報を送受信したりする情報送受信装置５、経路案内に関する情報を出力するディスプレイやスピーカその他の出力装置６から構成されている。 Hereinafter, embodiments will be described.
FIG. 1 is a diagram illustrating an example of a navigation device according to the present embodiment. Input device 1 for inputting information related to route guidance such as a departure point and destination, current position detection device 2 for detecting information related to the current position of the host vehicle, map data, navigation data necessary for route search, route guidance Necessary display / voice guidance data, information storage device 3 in which a program (application and / or OS) for performing guidance such as map display, route search, voice guidance, etc. is recorded, and map as navigator processing means Display processing, route search processing, display / voice guidance processing necessary for route guidance, and central processing unit 4 for controlling the entire system, information relating to vehicle travel, such as road information and traffic information, Information transmission / reception device 5 that detects information related to the current position of the vehicle and transmits / receives information related to the current position, and route guidance And a display and a speaker other output device 6 for outputting that information.

本実施形態の中央処理装置４は、出発地、到着地が同じで走行ルートも同じ走行が、所定期間内に所定回数以上、例えば１週間に３〜４回以上、或いは３〜４日以上あった場合、この道路は通勤経路等の良く通る道路として走行ルート学習手段１１により情報記憶装置５に格納し登録する。例えば、図２（ａ）に示すように、出発地Ａ、到着地Ｂの走行ルートがＲ１、Ｒ２、……Ｒｎある場合、図２（ｂ）に示すように各走行ルートごとに、例えば１週間に何回走行したかの統計をとり、ここではルートＲ２が５回、ルートＲｉが４回なのでこのルートをよく通る道路として登録する。なお、出発地、到着地が同じか否かは、例えば判断する距離として半径１００ｍのように設定し、その範囲内か否かで判断すればよく、また、この設定値は可変としてもよく、また、出発地と到着地間の距離に応じて変えるようにしてもよい。また、コンビニ、ガソリンスタンド等への立ち寄りを考慮し、例えば、エンジンキーＯＦＦ／ＯＮ３０分以内は到着地としない等の条件を入れることが望ましい。   The central processing unit 4 according to the present embodiment has the same starting point and arriving point and the same traveling route for a predetermined number of times within a predetermined period, for example, three to four times a week, or three to four days or more. In this case, this road is stored and registered in the information storage device 5 by the travel route learning means 11 as a frequently passing road such as a commuting route. For example, as shown in FIG. 2 (a), when there are travel routes R1, R2,... Rn for the departure place A and the arrival place B, for example, 1 for each travel route as shown in FIG. Statistics of how many times a week has been taken are taken, and here, since route R2 is 5 times and route Ri is 4 times, it is registered as a road that frequently passes through this route. Whether the departure place and the arrival place are the same may be determined by, for example, setting a distance to be determined as a radius of 100 m and determining whether the departure place is within the range, or the setting value may be variable. Moreover, you may make it change according to the distance between a departure place and an arrival place. In consideration of a drop-in to a convenience store, a gas station, etc., it is desirable to put in a condition that, for example, the engine key is not turned on / off within 30 minutes.

渋滞情報学習手段１２は、走行ルート学習手段１１で学習したよく通る道路の各道路リンクごとの通過時間を測定し、通過時間が所定時間以上かかるか否かにより渋滞／混雑を判断し、この情報を保存して走行毎の統計データを作成する。例えば、図３に示すように、よく通る道路を構成する道路リンクＬＩ、Ｌ２……Ｌｎに対して、それぞれ通過時間ｔ１、ｔ２……ｔｎを測定し、リンク長さとの関係で通過時間がかかる場合には渋滞箇所として登録する。ここでは、リンクＬ２、Ｌｉが渋滞箇所として登録される。この統計データは季節、月、曜日、時間帯毎に作成される。例えば、よく通る道路が通勤経路であれば、各曜日毎に渋滞・混雑の情報を情報記憶装置５内に保存し、曜日ごとの統計データを作成する。こうして学習した交通統計情報を利用して、ＶＩＣＳ等の外部情報が得られない路線でも渋滞回避ルートの探索を行うことができる。なお、外部情報が得られる路線では、受信した外部情報に基づいて渋滞／混雑を判断し、同様にして走行毎の統計データを作成する。もちろん、これらの統計データ作成方法を併用する事で、より正確に渋滞情報を学習することができる。   The traffic jam information learning means 12 measures the passing time for each road link of the frequent roads learned by the travel route learning means 11, determines whether the traffic is jammed / congested based on whether the passing time takes a predetermined time or more, and this information. Save and create statistical data for each run. For example, as shown in FIG. 3, the passage times t1, t2,... Tn are measured for road links LI, L2,. In this case, it is registered as a traffic jam spot. Here, the links L2 and Li are registered as traffic congestion points. This statistical data is created for each season, month, day of the week, and time zone. For example, if the road that passes frequently is a commuting route, information on traffic congestion / congestion is stored in the information storage device 5 for each day of the week, and statistical data for each day of the week is created. By using the traffic statistics information learned in this way, it is possible to search for a traffic jam avoidance route even on routes where external information such as VICS cannot be obtained. On routes where external information can be obtained, congestion / congestion is determined based on the received external information, and statistical data for each run is created in the same manner. Of course, by using these statistical data creation methods together, it is possible to learn traffic information more accurately.

また、よく通る道路で発生する渋滞情報を学習する際、学習した渋滞情報に対してユーザがそのまま走行するか、回避するかも学習し、回避した場合にはそのルートも学習する。図３の例ではリンクＬ２の渋滞箇所はそのまま通過し、リンクＬｉを回避しており、その回避ルートが登録される。こうして渋滞に対して通過学習をした場合には、ユーザが回避するより通過した方が早いと判断しており、そのような場合には渋滞回避ルート探索を起動させず、ユーザに合った案内をすることができる。また、渋滞情報を学習していない場所で突発渋滞が発生した場合のみユーザに案内することができる。なお、渋滞情報としては、その発生箇所以外にも、例えば、踏切、橋、道路幅等の渋滞の原因をユーザが入力して付加するようにしてもよい。   Further, when learning traffic information that occurs on a road that passes frequently, the user learns whether to travel as it is or avoids the learned traffic information, and if so, learns the route. In the example of FIG. 3, the congested part of the link L2 passes through as it is, the link Li is avoided, and the avoidance route is registered. In this way, when learning about traffic congestion is performed, it is determined that the user has passed faster than avoiding. In such a case, the traffic congestion avoidance route search is not started, and guidance suitable for the user is provided. can do. In addition, the user can be guided only when a sudden traffic jam occurs in a place where the traffic jam information is not learned. As the traffic jam information, in addition to the occurrence location, for example, the cause of traffic jams such as railroad crossings, bridges, and road widths may be input and added by the user.

制御手段１３は、走行ルート学習手段１１で学習したよく走行するルートにおいて、渋滞情報学習手段１２で学習した渋滞箇所（該当するリンクで特定）以外での渋滞発生を情報送受信装置５から受信したとき、ＤＲＧＳを起動するか否かの選択情報を出力してユーザの選択を待つ。ユーザがＤＲＧＳの起動を選択して回避ルートが探索されると、回避ルートを提示してユーザの選択を待つ。一方、情報送受信装置５から受信した渋滞発生箇所が、渋滞情報学習手段１２で学習した渋滞箇所の場合には、ＤＲＧＳを起動させるか否かの選択情報は出力しない。なお、情報送受信装置５から受信した渋滞発生箇所が学習した渋滞箇所と同じであっても、渋滞の原因が異なると判断された場合、例えば渋滞発生を学習した踏切や橋で事故が発生したような場合にはＤＲＧＳを起動するか否かの選択情報を出力するようにしてもよい。また、情報送受信装置５からの渋滞情報により、学習した渋滞箇所が渋滞していない場合も、参考情報として出力するようにしてもよい。なお、このときは予め目的地までのルートを探索しておく必要はなく、よく通るルート上に突発的な渋滞が生じたときのみその旨を案内し、ＤＲＧＳを起動する際にはよく通るルートにおける到着地を走行目的地とみなして、車両の現在位置から目的地までのルートを探索する。   When the control unit 13 receives from the information transmission / reception device 5 the occurrence of traffic congestion other than the traffic congestion location (identified by the corresponding link) learned by the traffic congestion information learning device 12 on the well traveled route learned by the travel route learning device 11. , The selection information indicating whether or not to start DRGS is output, and the selection of the user is awaited. When the user selects to start DRGS and the avoidance route is searched, the avoidance route is presented to wait for the user's selection. On the other hand, when the traffic jam occurrence location received from the information transmitting / receiving device 5 is a traffic jam location learned by the traffic jam information learning means 12, selection information on whether or not to start DRGS is not output. In addition, even if the traffic jam occurrence location received from the information transmitting / receiving device 5 is the same as the learned traffic jam location, if it is determined that the cause of the traffic jam is different, for example, an accident seems to have occurred at the crossing or bridge where the traffic jam occurrence was learned In such a case, selection information as to whether to start DRGS may be output. Also, when the learned traffic jam location is not jammed by the traffic jam information from the information transmitting / receiving device 5, it may be output as reference information. At this time, it is not necessary to search for a route to the destination in advance, only when sudden traffic jams occur on the route that passes frequently, and when you start DRGS The route from the current position of the vehicle to the destination is searched for, assuming that the arrival location at is a travel destination.

このような構成とすることにより、通勤経路等の良く通る道路上において、いつも渋滞していてそこを通らざるを得ない場合にはいちいちＤＲＧＳを起動するか否かの選択情報が出力される煩わしさがなく、一方、突発的に渋滞が発生したような場合には、ユーザはそのことを知って、ＤＲＧＳを起動して案内してもらうことが可能となる。   With such a configuration, when there is always a traffic jam on a road that frequently passes, such as a commuting route, and there is no choice but to go there, the selection information on whether or not to start DRGS is output. On the other hand, when a traffic jam suddenly occurs, the user can know the fact and start DRGS to be guided.

図４は走行ルートと渋滞情報学習処理フローの例を説明する図である。
図２に示したように、出発地と到着地が同じで、且つ走行ルートが同じ道路を学習し、例えば週に４回以上走行した場合にはよく通る道路として登録する（ステップＳ１）。次いで、図３に示したように、よく通る道路の各リンクごとにその通過時間を測定し、渋滞箇所を学習する（ステップＳ２）。この学習により季節／月／曜日／時間帯ごとの渋滞統計データを作成する（ステップＳ３）。 FIG. 4 is a diagram illustrating an example of a travel route and traffic information learning process flow.
As shown in FIG. 2, a road having the same starting point and arriving point and the same traveling route is learned, and for example, when the vehicle travels four or more times a week, it is registered as a frequently passing road (step S1). Next, as shown in FIG. 3, the passing time is measured for each link of a road that passes frequently, and a traffic jam location is learned (step S2). By this learning, traffic jam statistical data for each season / month / day of the week / time zone is created (step S3).

図５はよく通る道路での渋滞発生時の処理フローの例を説明する図である。
現在位置検出装置２の検出データ、地図データから登録されたよく通る道路の走行か否か判断する（ステップＳ１１）。登録されたよく通る道路の走行でなければ処理は終了する。登録されたよく通る道路を走行している場合には、ＶＩＣＳ等外部からの情報として渋滞情報を受信すると、よく通る道路の渋滞統計データと外部からの渋滞情報を比較する（ステップＳ１２）。比較の結果、渋滞統計データ以外の渋滞情報がなければ処理は終了し、よく通る道路の渋滞統計データ以外の渋滞情報があれば（ステップＳ１３）、ユーザが予期しない突発的渋滞であるのでこのことを音声案内や表示により通知する（ステップＳ１４）。そして、ＤＲＧＳを起動するか否かの選択情報を音声案内や表示で出力し（ステップＳ１５）、ユーザがＤＲＧＳの起動を選択すると、ＤＲＧＳが起動して渋滞回避ルートが探索される（ステップＳ１６）。なお、上記の処理において、出発地、到着地が同じで学習したルートが複数ある場合には、各ルートでの突発渋滞を案内するようにしてもよい。 FIG. 5 is a diagram for explaining an example of a processing flow at the time of occurrence of a traffic jam on a frequently passing road.
It is determined whether or not the vehicle is traveling on a well-registered road registered from the detection data and map data of the current position detection device 2 (step S11). If the travel is not on the registered road, the process ends. When traveling on a registered frequent road, if traffic information is received as external information such as VICS, the traffic statistical data of the frequent road is compared with traffic information from the outside (step S12). As a result of the comparison, if there is no traffic jam information other than the traffic jam statistics data, the process ends, and if there is traffic jam information other than the traffic jam statistics data on the frequently-used road (step S13), this is a sudden traffic jam unexpected by the user. Is notified by voice guidance or display (step S14). Then, selection information on whether or not to start DRGS is output by voice guidance or display (step S15). When the user selects to start DRGS, DRGS is started and a congestion avoiding route is searched (step S16). . In the above processing, when there are a plurality of learned routes with the same starting point and arriving point, sudden traffic jams in each route may be guided.

本発明によれば、可能な限りユーザの意に沿うように渋滞回避への対処を行うことができるので、産業上の利用価値は極めて大きい。   According to the present invention, it is possible to deal with traffic jam avoidance as much as possible according to the intention of the user, and thus the industrial utility value is extremely high.

本実施形態に係るナビゲーション装置の例を示す図である。It is a figure which shows the example of the navigation apparatus which concerns on this embodiment. よく通る道路の学習を説明する図である。It is a figure explaining learning of the road which passes well. 渋滞情報の学習を説明する図である。It is a figure explaining learning of traffic jam information. 走行ルートと渋滞情報学習処理フローの例を示す図である。It is a figure which shows the example of a driving | running route and traffic information learning processing flow. よく通る道路での渋滞発生時の処理フローの例を示す図である。It is a figure which shows the example of the processing flow at the time of traffic congestion on the road which passes frequently.

符号の説明Explanation of symbols

１…入力装置１、２…現在位置検出装置、３…情報記憶装置、４…中央処理装置、５…情報送受信装置、６…出力装置、１１…走行ルート学習手段、１２…渋滞情報学習手段、１３…制御手段。 DESCRIPTION OF SYMBOLS 1 ... Input device 1, 2 ... Current position detection device, 3 ... Information storage device, 4 ... Central processing unit, 5 ... Information transmission / reception device, 6 ... Output device, 11 ... Travel route learning means, 12 ... Congestion information learning means, 13: Control means.

Claims (5)

車両の現在位置を検出する現在位置検出手段と、
検出された現在位置に基づいて走行したルートを学習する走行ルート学習手段と、
学習した走行ルート上で発生する渋滞情報を学習する渋滞情報学習手段と、
渋滞発生箇所を回避するルートを探索する渋滞回避ルート探索手段と、
車両外部から取得した渋滞情報と学習した渋滞情報とを比較し、比較結果に基づいて渋滞回避ルート探索手段を起動するか否かの選択情報を出力する制御手段とを備えたことを特徴とする車両用ナビゲーション装置。 Current position detecting means for detecting the current position of the vehicle;
Travel route learning means for learning a route traveled based on the detected current position;
A traffic information learning means for learning traffic information generated on the learned driving route;
Congestion avoidance route search means for searching for a route that avoids a traffic jam occurrence point,
It comprises control means for comparing traffic information acquired from the outside of the vehicle with learned traffic information and outputting selection information as to whether or not to start the traffic jam avoidance route search means based on the comparison result. Vehicle navigation device. 前記走行ルート学習手段は、出発地、到着地、及び走行ルート同一の走行が、所定期間内に所定回数以上であるとき、当該走行ルートを登録することを特徴とする請求項１記載の車両用ナビゲーション装置。 2. The vehicle route according to claim 1, wherein the travel route learning unit registers the travel route when the same travel of the departure point, the arrival point, and the travel route is repeated a predetermined number of times within a predetermined period. Navigation device. 前記渋滞情報学習手段は、季節、曜日、時間帯ごとに渋滞情報を学習することを特徴とする請求項１記載の車両用ナビゲーション装置。 2. The vehicle navigation apparatus according to claim 1, wherein the traffic information learning unit learns traffic information for each season, day of the week, and time zone. 前記渋滞情報学習手段は、学習した渋滞箇所に対してユーザが通過したか回避したかも学習することを特徴とする請求項１記載の車両用ナビゲーション装置。 2. The vehicle navigation apparatus according to claim 1, wherein the traffic information learning unit also learns whether the user has passed or avoided the learned traffic location. 前記渋滞情報学習手段は、学習した渋滞箇所に対してユーザが回避したとき、その回避ルートも学習することを学習することを特徴とする請求項４記載の車両用ナビゲーション装置。 5. The vehicle navigation apparatus according to claim 4, wherein the traffic information learning unit learns to learn the avoidance route when the user avoids the learned traffic location.
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