JP2003267173A - Inter-vehicle distance alarm device - Google Patents
Inter-vehicle distance alarm deviceInfo
- Publication number
- JP2003267173A JP2003267173A JP2002071078A JP2002071078A JP2003267173A JP 2003267173 A JP2003267173 A JP 2003267173A JP 2002071078 A JP2002071078 A JP 2002071078A JP 2002071078 A JP2002071078 A JP 2002071078A JP 2003267173 A JP2003267173 A JP 2003267173A
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- alarm
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- distance
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- 238000000034 method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は車両のドライバに対
し、車間距離が狭い場合、或いは前方に障害物がある場
合に警報を発する、車間距離警報装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-vehicle distance warning device for issuing a warning to a driver of a vehicle when the inter-vehicle distance is narrow or there is an obstacle ahead.
【０００２】[0002]
【従来の技術】車両のドライバに対する車間距離警報装
置としては次のような技術が知られている。特開平９−
５４８９９は、ハンドル操作が忙しくドライバの注意力
が高い山岳部の隘路、混雑した市街路等において、警報
が頻繁に発せられることによる警報慣れが生じることや
煩わしく感じさせることなく警報を抑制し、ハンドルセ
ンサや走行速度に関係なく適切な警報を発するものを開
示している。特開平１０−１４３８００は、警報を発生
させるレベル設定を手動と自動の切替可能にして、警報
タイミングを可変にする技術を開示している。特開平１
０−２８７１９２は、計器板中央部の車載機器を操作し
て前方の視認が十分でないときに、早めに警報を発生さ
せる技術を開示している。特開２００１−２６０７７６
は、ドライバの注視行動を追跡し、障害物に関する情報
提供を適切なタイミングで行う技術を開示している。2. Description of the Related Art The following technology is known as an inter-vehicle distance warning device for a driver of a vehicle. JP-A-9-
The 54899 suppresses the alarms without causing the operator to get accustomed to the alarm due to frequent alarms and to avoid annoying feelings on the narrow roads in the mountains, the busy city roads, etc. A device that issues an appropriate alarm regardless of the sensor or the traveling speed is disclosed. Japanese Unexamined Patent Application Publication No. 10-143800 discloses a technique in which the level setting for generating an alarm can be switched between manual and automatic to make the alarm timing variable. JP-A-1
0-287192 discloses a technique of operating a vehicle-mounted device in the central portion of the instrument panel to generate an early warning when the front view is insufficient. JP-A-2001-260776
Discloses a technique of tracking a gaze behavior of a driver and providing information regarding an obstacle at an appropriate timing.
【０００３】[0003]
【発明が解決しようとする課題】車間接近時に車両のド
ライバに注意を促す車間距離警報装置では、ドライバの
注意が既に当該先行車に集中している際に発せられる警
報、いわば誤警報により、ドライバが煩わしさを感じ、
却って運転への集中力がそがれることとなる問題があっ
た。そこで上記のような技術が開発されているが，これ
らにも下記の通りの問題が残っている。即ち、警報を発
生させるための閾値を可変とするとしても、ドライバの
注意レベルを直接精度良く推定することは極めて困難で
ある。一方、間接的に推定する場合としては、下記場合
ごとにそれぞれ次のような問題がある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In an inter-vehicle distance warning device which calls attention to a driver of a vehicle when approaching the vehicle, an alarm issued when the driver's attention is already concentrated on the preceding vehicle, that is, a false alarm, Feels annoyed,
On the contrary, there was a problem that the concentration on driving was diminished. Therefore, although the above technologies have been developed, the following problems still remain in these technologies. That is, even if the threshold value for generating an alarm is variable, it is extremely difficult to directly and accurately estimate the driver's attention level. On the other hand, in the case of indirect estimation, there are the following problems in each of the following cases.
【０００４】ドライバの視認行動の追跡には、極めて高
価な装置が必要となり、且つ、目の向きが当該先行車等
にあっても、極めて注意力の低い場合（見れども見え
ず）は警報を発すべきであるのに発しないという問題が
ある。ドライバのステアリングやペダルの運転操作と注
意レベルとは、実は先行車への注意力との関連が薄いと
されている。また、ドライバ自身に手動による切替をさ
せることは、ドライバの経験による包括的なレベル調整
にはなるものの、運転中の状況に応じた注意レベルを切
り換える物ではなく、結局ドライバの運転中の注意レベ
ルを反映したものとはならない。An extremely expensive device is required to track the visual recognition behavior of the driver, and an alarm is issued if the attention is extremely low (even if it is not visible) even if the direction of the eyes is toward the preceding vehicle. There is a problem that it should be issued but not. In fact, it is said that the driver's steering operation and pedal operation and the attention level have little relation to the attention to the preceding vehicle. In addition, allowing the driver to manually switch is a comprehensive level adjustment based on the driver's experience, but it is not a thing to switch the attention level according to the situation during driving, but after all, the attention level during driving of the driver Is not reflected.
【０００５】本発明は上記課題を解決するためになされ
たものであり、ドライバの注意レベルが、当該車両の位
置する地図情報で推測可能であることに着目して完成さ
れたものである。The present invention has been made in order to solve the above problems, and was completed by paying attention to the fact that the driver's attention level can be inferred from the map information of the position of the vehicle.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
め、請求項１に記載の手段によれば、自車両の位置を検
出する自車両位置検出手段と、自車両位置検出手段の出
力である位置情報により、警報レベルを選択して出力す
る警報レベル出力手段と、自車両の速度を検出する車速
計測手段と、先行車との距離を検出する車間距離計測手
段と、警報レベル出力手段の出力する位置情報に対応し
た警報レベルに応じて、警報の閾値を変化させた上で、
車間距離計測手段の出力する先行車との距離と、車速計
測手段の出力する自車両の速度とを比較して判定される
緊急度が、警報の閾値を上回った場合に警報情報の表示
指令を出力する警報制御手段と、警報制御手段の出力す
る警報情報の表示指令に応じて音、光、振動その他の刺
激により警報情報をドライバに放置する情報表示手段と
を有することを特徴とする。In order to solve the above-mentioned problems, according to the means described in claim 1, the output of the own vehicle position detecting means for detecting the position of the own vehicle and the output of the own vehicle position detecting means. An alarm level output means for selecting and outputting an alarm level based on certain position information, a vehicle speed measuring means for detecting the speed of the own vehicle, an inter-vehicle distance measuring means for detecting a distance to a preceding vehicle, and an alarm level output means. Depending on the alarm level corresponding to the output position information, after changing the alarm threshold,
When the urgency determined by comparing the distance between the preceding vehicle output by the inter-vehicle distance measuring means and the speed of the host vehicle output by the vehicle speed measuring means exceeds the alarm threshold, a warning information display command is issued. It is characterized by having an alarm control means for outputting and an information display means for leaving the alarm information to the driver by a stimulus such as sound, light, vibration or the like according to a display command of the alarm information output by the alarm control means.
【０００７】また、請求項２に記載の手段によれば、警
報レベル出力手段は、交差点位置を記憶する交差点位置
情報記憶手段を有し、自車両の位置と交差点位置との関
係に基づき警報レベルを選択して出力することを特徴と
する。また、請求項３に記載の手段によれば、警報レベ
ル出力手段は、道路特徴を記憶する道路特徴記憶手段を
有し、自車両の位置に対応した道路特徴に基づき警報レ
ベルを選択して出力することを特徴とする。According to the second aspect of the present invention, the alarm level output means has intersection position information storage means for storing the intersection position, and the alarm level is output based on the relationship between the position of the own vehicle and the intersection position. Is selected and output. Further, according to the means of claim 3, the alarm level output means has a road characteristic storage means for storing road characteristics, and selects and outputs an alarm level based on the road characteristics corresponding to the position of the own vehicle. It is characterized by doing.
【０００８】[0008]
【作用及び発明の効果】本願発明によると、走行位置ご
とにドライバの注意レベルが推定可能であることに基づ
き、予め設定された複数の警報レベルから適切な警報レ
ベルを選択し、選択された警報レベルに応じて警報の閾
値を変化させた上で、先行車までの距離と自車両の速度
とを比較して判定される緊急度が、当該警報の閾値を上
回った場合に情報表示手段に出力指令を出すことによ
り、ドライバの注意レベルを考慮した警報が可能とな
る。即ち、ドライバの注意レベルが高いと推定される場
合には、警報の閾値が高くなることで緊急度がそれを上
回るまでは警報が発せられないことにより、実質的に警
報を発するタイミングを遅らせることができる。また、
ドライバの注意レベルが低いと推定される場合には、警
報の閾値が低くなることで緊急度がそれを上回れば警報
が発せられることにより、実質的に警報を発するタイミ
ングを早めることができる。尚、本願発明の緊急度の替
わりに余裕時間を設けた場合は、警報の閾値に対し当該
余裕時間が下回った場合に警報が発せられるようにする
ことで、全く同等の発明となる。これが本願発明に包含
されることは当然である。According to the present invention, based on the fact that the driver's attention level can be estimated for each traveling position, an appropriate alarm level is selected from a plurality of preset alarm levels, and the selected alarm is selected. The alarm threshold is changed according to the level, and the urgency determined by comparing the distance to the preceding vehicle and the speed of the host vehicle is output to the information display means when the alarm threshold is exceeded. By issuing a command, it becomes possible to give an alarm considering the driver's attention level. In other words, if the driver's attention level is estimated to be high, the alarm threshold will be high, and the alarm will not be issued until the urgency exceeds it, thus delaying the timing of the alarm. You can Also,
When it is estimated that the driver's attention level is low, the threshold value of the alarm becomes low, and if the urgency level exceeds it, the alarm is issued, so that the timing of issuing the alarm can be substantially advanced. When a margin time is provided instead of the urgency of the invention of the present application, an alarm is issued when the margin time falls below the alarm threshold, so that the invention is completely equivalent. This is naturally included in the present invention.
【０００９】[0009]
【発明の実施の形態】図１に本発明の具体的な一実施例
に係る車間距離警報装置１００の構成を示す。尚、本発
明は図１に示す実施例に限定されない。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an inter-vehicle distance warning device 100 according to a specific embodiment of the present invention. The present invention is not limited to the embodiment shown in FIG.
【００１０】図１の車間距離警報装置１００は、ＧＰＳ
１、車速センサ２、車間距離センサ３、地図４、マイク
ロプロセッサ５、表示装置６から成る。The inter-vehicle distance warning device 100 shown in FIG.
1, a vehicle speed sensor 2, an inter-vehicle distance sensor 3, a map 4, a microprocessor 5, and a display device 6.
【００１１】ＧＰＳ１により、自車両の位置Ｐが検出さ
れる（自車両位置検出手段）。この位置情報Ｐはマイク
ロプロセッサ５に出力される。また、車速センサ２によ
り自車両の速度ｖが検出され（車速計測手段）、車間距
離センサ３により自車両と先行車両との距離ｄが検出さ
れる（車間距離計測手段）。これらの出力である車速ｖ
と先行車との距離ｄはマイクロプロセッサ５に出力され
る。The position P of the vehicle is detected by the GPS 1 (vehicle position detecting means). This position information P is output to the microprocessor 5. The vehicle speed sensor 2 detects the speed v of the host vehicle (vehicle speed measuring means), and the inter-vehicle distance sensor 3 detects the distance d between the host vehicle and the preceding vehicle (inter-vehicle distance measuring means). These outputs are the vehicle speed v
The distance d between the vehicle and the preceding vehicle is output to the microprocessor 5.
【００１２】これらの関係を模式的に図２に示す。自車
両（位置Ｐ）が図２のような交差点に車速ｖで接近し、
交差点の手前であって距離ｄ先に先行車Ｘがいるものと
する。FIG. 2 schematically shows these relationships. The own vehicle (position P) approaches the intersection as shown in FIG. 2 at the vehicle speed v,
It is assumed that the preceding vehicle X is ahead of the intersection and a distance d ahead.
【００１３】次に、マイクロプロセッサ５では次の処理
が行われる。まず、ＧＰＳ１が出力した位置Ｐを地図４
と照らし合わせ、自車両の位置が高速道路又は自動車専
用道路上にあるか又は一般道かを判断し、また、一般道
であるならば交差点に近いか、道路幅が狭いかどうかの
情報を得る。ここで地図４は例えば図３のように情報を
もたせれば良い。Next, the microprocessor 5 carries out the following processing. First, the position P output by the GPS 1 is displayed on the map 4
It determines whether the position of the vehicle is on a highway or a motorway or is a general road, and if it is a general road, it obtains information whether it is near the intersection or the road width is narrow. . Here, the map 4 may have information as shown in FIG. 3, for example.
【００１４】ここで、ドライバの注意力が高いと推定さ
れる場合、例えば一般道で交差点に近い或いは道路幅が
狭い場合は、警報の閾値を高くする。一方、ドライバの
注意力が低いと推定される場合、例えば高速道路や自動
車専用道路上である場合や一般道でも交差点まで遠い或
いは道路幅が広い場合は、警報の閾値を低くする。こう
して、車速ｖと先行車との距離ｄから得られる緊急度が
警報の閾値を上回った場合、即ち、ドライバに注意を与
えなければ先行車と衝突する恐れがある場合に表示装置
６に表示指令を出力する。表示装置６の出力は、例えば
「車間距離が縮まっています」、「衝突します」、「ブ
レーキを踏んで下さい」といった音声ガイド、同様の文
字表示、赤色又は橙色の社内照明等、或いはハンドル又
はシートの振動といった任意のもので良い。Here, when it is estimated that the driver's attention is high, for example, when the road is close to an intersection or the road width is narrow, the warning threshold value is increased. On the other hand, when it is estimated that the driver's attention is low, for example, on a highway or an automobile-only road, or on a general road that is far from the intersection or has a wide road, the warning threshold value is lowered. In this way, when the urgency obtained from the vehicle speed v and the distance d between the preceding vehicle exceeds the warning threshold, that is, when there is a risk of collision with the preceding vehicle unless the driver is alerted, a display command is issued to the display device 6. Is output. The output of the display device 6 is, for example, a voice guide such as "the distance between vehicles is shortening", "collision", "press the brakes", similar text display, red or orange company lighting, etc., or the steering wheel or Anything such as seat vibration may be used.
【００１５】車速ｖと距離ｄから判定される緊急度又は
余裕時間としては、例えば余裕時間としてコリジョンタ
イム（衝突までの時間）を用い、コリジョンタイムが警
報の閾値を下回った場合に警報を発するようにすれば良
い。例えば、交差点の手前近辺等、ドライバの注意が高
い場合は警報の閾値を例えば0.8秒と短くし、高速道路
等ドライバの注意が低い場合は警報の閾値を例えば1.0
秒と長くする。これにより、交差点の手前近辺等では、
車速ｖと距離ｄから判定されるコリジョンタイム（余裕
時間にあたる）が0.8秒を下回らなければ警報は発せら
れない。また、高速道路等では車速ｖと距離ｄから判定
されるコリジョンタイム（余裕時間にあたる）が1.0秒
下回れば警報が発せられる。このように、ドライバの注
意が高い場合は比較的遅めに警報が発せられるので、ド
ライバが先行車を注視している場合に警報が頻発するこ
とによる煩わしさを減らすことができる。また、ドライ
バが先行車の減速を予期せず、先行車に対する注意が低
い場合は、余裕を持って早めに警報が発せられること
で、注意力を喚起させ、先行車との衝突を未然に防ぐこ
とができる。As an urgency or a margin time determined from the vehicle speed v and the distance d, for example, a collision time (time until collision) is used as a margin time, and an alarm is issued when the collision time falls below a warning threshold value. You can do it. For example, if the driver's attention is high near the intersection, the warning threshold value is shortened to 0.8 seconds, and if the driver's attention is low such as a highway, the warning threshold value is set to 1.0.
Seconds and longer. As a result, near the intersection, etc.,
If the collision time (corresponding to the margin time) determined from the vehicle speed v and the distance d is less than 0.8 seconds, no alarm is issued. On a highway or the like, an alarm is issued when the collision time (corresponding to the margin time) determined from the vehicle speed v and the distance d falls below 1.0 second. In this way, when the driver's attention is high, the alarm is issued relatively late, so that it is possible to reduce the annoyance caused by frequent alarms when the driver is watching the preceding vehicle. Also, if the driver does not anticipate deceleration of the preceding vehicle and the attention to the preceding vehicle is low, an early warning is issued with plenty of time to alert the driver and prevent a collision with the preceding vehicle. be able to.
【００１６】この様子をフローチャートとして図４に示
す。まず、ステップＳ００１において、自車両が前進中
であるかどうかが判断される。自車両が前進中であれば
ステップＳ００２に進み、前進中でなければ再度ステッ
プＳ００１に戻る。ステップＳ００２では、自車両の位
置Ｐを取得し、ステップＳ００３に進む。ステップＳ０
０３では、自車両の位置Ｐから警報の閾値時間ｔthが図
４の地図情報を参照されて算出され、ステップＳ００４
に進む。ステップＳ００４では、自車両の速度ｖと先行
車との距離ｄが取得され、ステップＳ００５に進む。ス
テップＳ００５では、自車両の速度ｖと先行車との距離
ｄとからコリジョンタイム（余裕時間）ｔcolが算出さ
れ、ステップＳ００６に進む。ステップＳ００６におい
て、コリジョンタイム（余裕時間）ｔcolが警報の閾値
時間ｔth以下かどうか判定される。コリジョンタイム
（余裕時間）ｔcolが警報の閾値時間ｔth以下であれば
ステップＳ００７に進み、リジョンタイム（余裕時間）
ｔcolが警報の閾値時間ｔth以下でなければステップＳ
００１に戻る。ステップＳ００７では、表示装置６に対
し表示指令を出力してステップＳ００８に進む。ステッ
プＳ００８では、表示指令後の所定時間、演算の一時停
止を行い、その後ステップＳ００１に戻る。This state is shown in FIG. 4 as a flow chart. First, in step S001, it is determined whether the host vehicle is moving forward. If the host vehicle is moving forward, the process proceeds to step S002, and if it is not moving forward, the process returns to step S001 again. In step S002, the position P of the host vehicle is acquired, and the process proceeds to step S003. Step S0
In 03, the threshold time t th of the alarm is calculated from the position P of the own vehicle by referring to the map information of FIG. 4, and step S004
Proceed to. In step S004, the speed v of the own vehicle and the distance d between the preceding vehicle are acquired, and the process proceeds to step S005. In step S005, the collision time (margin time) t col is calculated from the speed v of the host vehicle and the distance d from the preceding vehicle, and the process proceeds to step S006. In step S006, it is determined whether the collision time (margin time) t col is less than or equal to the alarm threshold time t th . If the collision time (margin time) t col is less than or equal to the alarm threshold time t th , the process proceeds to step S007, and the region time (margin time)
If t col is not less than the alarm threshold time t th , step S
Return to 001. In step S007, a display command is output to the display device 6, and the process proceeds to step S008. In step S008, the calculation is temporarily stopped for a predetermined time after the display instruction, and then the process returns to step S001.
【００１７】このように、本願発明によれば、ドライバ
の先行車に対する注意力を位置情報から精度良く推定す
ることが可能であるので、ドライバの注意力が高いとき
には警報が頻発しないようにすることができ、ドライバ
の注意力が低いときには警報を早めに発することができ
る。As described above, according to the present invention, it is possible to accurately estimate the driver's attention to the preceding vehicle from the position information. Therefore, when the driver's attention is high, the alarm should not be issued frequently. When the driver's attention is low, an alarm can be issued early.
【００１８】上記実施例では位置情報を検出する自車両
位置検出手段としてＧＰＳを用いたが、ジャイロを用い
て自車両の位置を検出しても良い。また、車速センサ
は、車速を直接検出するセンサ、加速度センサによるも
の、車輪回転速度から算出するものその他任意のものを
用いることができる。車間距離センサはレーザレーダ、
ミリ波レーダその他の任意の技術のものを用いることが
できる。地図情報としては図３のものに限定されず、警
報レベル毎に領域で示されるものでも良い。尚、表示装
置が発する警報は、１の警報に対して複数の表示等をさ
せても良く、また、複数段階の警報を用いるものでも良
い。複数段階の警報例えば、注意喚起、ブレーキ警報、
ブレーキ命令の３段階のものであれば、各段階の警報の
閾値を各々位置情報により変化させれば良い。Although the GPS is used as the vehicle position detecting means for detecting the position information in the above embodiment, the position of the vehicle may be detected by using a gyro. The vehicle speed sensor may be a sensor that directly detects the vehicle speed, an acceleration sensor, a sensor that calculates from the wheel rotation speed, or any other desired sensor. The inter-vehicle distance sensor is a laser radar,
A millimeter wave radar or any other technology can be used. The map information is not limited to that shown in FIG. 3, and may be indicated by a region for each alarm level. The alarm issued by the display device may display a plurality of displays for one alarm, or may use an alarm of multiple stages. Multi-level alerts such as alerts, brake alerts,
If the brake command has three levels, the threshold value of the alarm at each level may be changed according to the position information.
【図１】本発明の具体的な一実施例に係る車間距離警報
装置１００の構成を示すブロック図。FIG. 1 is a block diagram showing the configuration of an inter-vehicle distance warning device 100 according to a specific embodiment of the present invention.
【図２】本発明の作用の説明のための自車両（位置Ｐ）
と先行車Ｘの関係を示す模式図。FIG. 2 is an own vehicle (position P) for explaining the operation of the present invention.
The schematic diagram which shows the relationship between the preceding vehicle X.
【図３】実施例における地図情報の一例を示す表図。FIG. 3 is a table showing an example of map information according to the embodiment.
【図４】実施例におけるマイクロプロセッサ５の働きを
示すフローチャート。FIG. 4 is a flowchart showing the operation of the microprocessor 5 in the embodiment.
１ ＧＰＳ ２ 車速センサ ３ 車間距離センサ ４ 地図 ５ マイクロプロセッサ ６ 表示装置 Ｐ 自車両の位置 ｖ 自車両の速度 Ｘ 先行車 ｄ 自車両と先行車との距離 1 GPS 2 vehicle speed sensor 3 inter-vehicle distance sensor 4 maps 5 microprocessors 6 Display device Position of P own vehicle v Speed of own vehicle X preceding vehicle d Distance between own vehicle and preceding vehicle
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ６０Ｋ 35/00 Ｂ６０Ｋ 35/00 Ｚ Ｇ０８Ｇ 1/16 Ｇ０８Ｇ 1/16 Ｅ Ｆターム(参考） 3D044 AA21 AA25 AA31 AA35 AB01 AC26 AC56 AC59 AE04 AE21 BA20 BA30 BB01 5H180 AA01 CC03 CC12 CC14 FF04 FF05 LL01 LL04 LL07 LL08─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B60K 35/00 B60K 35/00 Z G08G 1/16 G08G 1/16 EF term (reference) 3D044 AA21 AA25 AA31 AA35 AB01 AC26 AC56 AC59 AE04 AE21 BA20 BA30 BB01 5H180 AA01 CC03 CC12 CC14 FF04 FF05 LL01 LL04 LL07 LL08
Claims (3)
手段と、 前記自車両位置検出手段の出力である位置情報により、
警報レベルを選択して出力する警報レベル出力手段と、 自車両の速度を検出する車速計測手段と、 先行車との距離を検出する車間距離計測手段と、 前記警報レベル出力手段の出力する位置情報に対応した
警報レベルに応じて、警報の閾値を変化させた上で、前
記車間距離計測手段の出力する先行車との距離と、前記
車速計測手段の出力する自車両の速度とを比較して判定
される緊急度が、前記警報の閾値を上回った場合に警報
情報の表示指令を出力する警報制御手段と、 前記警報制御手段の出力する警報情報の表示指令に応じ
て音、光、振動その他の刺激により警報情報をドライバ
に放置する情報表示手段とを有することを特徴とする車
間距離警報装置。1. A vehicle position detecting means for detecting the position of the vehicle and position information output from the vehicle position detecting means,
An alarm level output means for selecting and outputting an alarm level, a vehicle speed measuring means for detecting the speed of the own vehicle, an inter-vehicle distance measuring means for detecting a distance to a preceding vehicle, and position information output by the alarm level output means. According to the alarm level corresponding to, after changing the threshold value of the alarm, by comparing the distance to the preceding vehicle output by the inter-vehicle distance measuring means, and the speed of the own vehicle output by the vehicle speed measuring means Alarm control means for outputting a display command of alarm information when the determined urgency exceeds the threshold value of the alarm, and sound, light, vibration, etc. according to the display command of the alarm information output by the alarm control means. And an information display means for allowing the driver to leave the alarm information by the stimulus.
を選択して出力することを特徴とする請求項１に記載の
車間距離警報装置。2. The alarm level output means has intersection position information storage means for storing the intersection position, and selects and outputs an alarm level based on the relationship between the position of the own vehicle and the intersection position. The inter-vehicle distance warning device according to claim 1.
選択して出力することを特徴とする請求項１に記載の車
間距離警報装置。3. The alarm level output means includes road characteristic storage means for storing road characteristics, and selects and outputs an alarm level based on road characteristics corresponding to the position of the own vehicle. The inter-vehicle distance warning device according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002071078A JP2003267173A (en) | 2002-03-14 | 2002-03-14 | Inter-vehicle distance alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002071078A JP2003267173A (en) | 2002-03-14 | 2002-03-14 | Inter-vehicle distance alarm device |
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|---|---|
| JP2003267173A true JP2003267173A (en) | 2003-09-25 |
| JP2003267173A5 JP2003267173A5 (en) | 2005-08-04 |
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ID=29201441
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002071078A Pending JP2003267173A (en) | 2002-03-14 | 2002-03-14 | Inter-vehicle distance alarm device |
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