JP2663075B2 - Ambient monitoring system for vehicles - Google Patents
Ambient monitoring system for vehiclesInfo
- Publication number
- JP2663075B2 JP2663075B2 JP4039717A JP3971792A JP2663075B2 JP 2663075 B2 JP2663075 B2 JP 2663075B2 JP 4039717 A JP4039717 A JP 4039717A JP 3971792 A JP3971792 A JP 3971792A JP 2663075 B2 JP2663075 B2 JP 2663075B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- image
- vehicle
- imaging
- situation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両の周囲の状況を車
体に搭載したＣＣＤカメラ等の撮像手段により撮像し、
その画像を車室内のＣＲＴ等の表示手段に表示するよう
にした車両用周囲監視装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup device for a vehicle.
The present invention relates to a vehicle surroundings monitoring device that displays the image on a display means such as a CRT in a vehicle cabin.
【０００２】[0002]
【従来の技術】従来、この種装置として、特開昭６３−
５４６９９号により、撮像手段の視野に鏡を配置し該鏡
を任意の角度に回動自在とし、車両周囲のうち所望する
方向の状況が鏡に映される角度になるように該鏡を回動
して停止させ、該鏡に映し出される状況を撮像するよう
に構成したものが知られている。2. Description of the Related Art Conventionally, as this type of apparatus, Japanese Patent Application Laid-Open
According to Japanese Patent No. 54699, a mirror is arranged in the field of view of the imaging means, and the mirror is rotatable at an arbitrary angle, and the mirror is rotated so that a situation in a desired direction around the vehicle is reflected on the mirror. There is known a configuration in which the image is stopped and stopped to capture an image of the situation reflected on the mirror.
【０００３】[0003]
【発明が解決しようとする課題】上記公報記載のもので
は、撮像する方向を変更する場合、例えば右方向の状況
を撮像している状態から左方向の状況を撮像する状態に
変更する場合には、該左方向の状況が鏡に映し出される
角度になるまで該鏡を略９０度回転させるが、該鏡の角
度制御を行うためには、該鏡の回転駆動系に停止位相制
御機構を採用しなければならず、その制御が複雑にな
る。また、鏡の角度を変更している間は撮像できないの
で所望する方向の状況を車内に表示できないという不具
合が生じる。そこで本発明は、上記の問題点に鑑み、鏡
の駆動制御が複雑とならず、かつ所望する方向の状況を
ただちに車内に表示することのできる車両用周囲監視装
置を提供することを目的とする。According to the technique disclosed in the above-mentioned publication, when changing the imaging direction, for example, when changing from a state in which a rightward situation is imaged to a state in which a leftward situation is imaged, The mirror is rotated by approximately 90 degrees until the angle in the left direction is reflected on the mirror. In order to control the angle of the mirror, a stop phase control mechanism is employed in the rotation drive system of the mirror. Control becomes complicated. In addition, since the image cannot be taken while the angle of the mirror is being changed, there is a problem that the situation in the desired direction cannot be displayed in the vehicle. In view of the above problems, an object of the present invention is to provide a vehicle periphery monitoring device that does not require complicated mirror drive control and that can immediately display a situation in a desired direction in a vehicle. .
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明は、車両の周囲の状況を撮像する撮像手段と、
該撮像手段による画像を表示する表示手段とを有する車
両用周囲監視装置であって、上記撮像手段がその視野に
配置した鏡に映し出される上記状況を撮像するものにお
いて、該鏡を一定速度で回転せしめる鏡回転手段と、そ
の回転位相を検出する回転位相検出手段と、表示手段に
表示させる画像の撮像タイミングを検出手段の信号に基
づいて鏡が所定の位相になるタイミングに同期させる制
御手段とを備えたことを特徴とする。In order to achieve the above object, the present invention provides an image pickup means for picking up an image of a situation around a vehicle,
A vehicle surrounding monitoring device having display means for displaying an image by the image pickup means, wherein the image pickup means takes an image of the situation reflected on a mirror arranged in the field of view, wherein the mirror is rotated at a constant speed. Mirror rotation means to be rotated, rotation phase detection means for detecting the rotation phase thereof, and control means for synchronizing the imaging timing of an image to be displayed on the display means with the timing at which the mirror becomes a predetermined phase based on a signal from the detection means. It is characterized by having.
【０００５】[0005]
【作用】鏡を一定速度で回転させておき、該回転する鏡
により映し出される各方向の周囲の状況のうち、所望す
る方向の状況が映し出されていることを該鏡の位相から
検知して、撮像手段の撮像タイミングを該鏡の位相に同
期させることにより、上記所望する方向の状況を撮像し
それを車内に表示する。そして、撮像する方向を変更す
る場合には、撮像タイミングを変更後の方向に対応する
位相に同期するようにシフトすることにより瞬時に車内
の表示を切り換える。The mirror is rotated at a constant speed, and it is detected from the phase of the mirror that the situation in the desired direction is projected from the surrounding situations in each direction projected by the rotating mirror. By synchronizing the imaging timing of the imaging means with the phase of the mirror, the situation in the desired direction is imaged and displayed in the vehicle. When the imaging direction is changed, the display inside the vehicle is instantaneously switched by shifting the imaging timing so as to be synchronized with the phase corresponding to the changed direction.
【０００６】[0006]
【実施例】図において、１は車両であり、本実施例の場
合には該車両１のフロント部に撮像部２を進退自在に格
納した。すなわち通常時には、該撮像部２はフロント部
に格納され外部に露出していないが、見通しの悪い狭路
から大通りに出るような場合にはフロント部の一部であ
る蓋体１１を上方に回動し、上記撮像部２を前方に突出
させるようにした。該撮像部２は、その先端部に、モー
タ２３の上部に一定の回転速度で回動自在に保持された
両面鏡２１と、その後方に該両面鏡２１に映し出される
該車両１の周囲の状況を撮像するＣＣＤカメラ２２とを
備えている。尚、該モータ２３は略一定速度で回転すれ
ばよいので、通常の直流モータで十分である。また該モ
ータ２３には両面鏡２１の回転角θに対応する角度信号
FSを出力するロータリエンコーダが内蔵されている。そ
して上記ＣＣＤカメラ２２とロータリエンコーダはコン
トローラ３に接続され、この角度信号FS及び上記ＣＣＤ
カメラ２２からの映像信号VSは共に該コントローラ３に
入力される。該コントローラ３は、両面鏡２１の回転角
θが該両面鏡２１に所望する方向の状況が映し出される
角度になったことを上記角度信号FSを基に検知すると、
そのときの映像信号vsを静止画像信号SSとしてメモリ３
１に一旦格納する。そして、次に新たな静止画像信号SS
がメモリ３１に格納され更新されるまで該静止画像信号
SSを画像処理装置５１に出力する。該画像処理装置５１
は該静止画像信号SSに基づいて車内に配設されたモニタ
５に映像を出力させる。尚、撮像する方向を変更する場
合には、車内に設けたスイッチ４を操作し撮像方向変更
信号CSをコントローラ３に入力することにより、映像信
号VSをメモリ３１に格納するタイミングをシフトさせ、
変更後の方向の状況が両面鏡２１に映し出された時の静
止画像信号SSをメモリ３１に格納するようにすればよ
い。In the drawings, reference numeral 1 denotes a vehicle. In this embodiment, an image pickup unit 2 is stored at the front of the vehicle 1 so as to be able to move forward and backward. That is, at normal times, the imaging unit 2 is stored in the front part and is not exposed to the outside. However, in a case where the main body comes out of a narrow road with poor visibility, the cover 11 which is a part of the front part is turned upward. To move the image pickup unit 2 forward. The imaging unit 2 has, at its tip, a double-sided mirror 21 rotatably held at a constant rotation speed above a motor 23, and a situation around the vehicle 1 reflected on the double-sided mirror 21 behind the double-sided mirror 21. And a CCD camera 22 for imaging the image. Since the motor 23 only needs to rotate at a substantially constant speed, a normal DC motor is sufficient. The motor 23 has an angle signal corresponding to the rotation angle θ of the double-sided mirror 21.
Built-in rotary encoder that outputs FS. The CCD camera 22 and the rotary encoder are connected to the controller 3, and the angle signal FS and the CCD
Both video signals VS from the camera 22 are input to the controller 3. When the controller 3 detects, based on the angle signal FS, that the rotation angle θ of the double-sided mirror 21 has reached an angle at which the situation in the desired direction is reflected on the double-sided mirror 21,
The video signal vs. at that time is stored in the memory 3 as a still image signal SS.
1 temporarily. Then, a new still image signal SS
Is stored in the memory 31 until the still image signal is updated.
SS is output to the image processing device 51. The image processing device 51
Causes the monitor 5 disposed in the vehicle to output an image based on the still image signal SS. When changing the imaging direction, the switch 4 provided in the vehicle is operated and the imaging direction change signal CS is input to the controller 3 to shift the timing of storing the video signal VS in the memory 31.
What is necessary is just to store the still image signal SS when the state of the changed direction is reflected on the double-sided mirror 21 in the memory 31.
【０００７】従って、例えば左方向の状況Ｌをモニタ５
に表示させるためには、回転角θが４５度及び２２５度
の時に映像信号VSを静止画像信号SSとしてメモリ３１に
格納すればよい。尚、この場合両面鏡２１が４５度から
２２５度まで半回転するのに要する時間が、モニタ５の
画面の更新周期、すなわちフレーム周期λに相当する。
従って、例えば該フレーム周期λを1/30秒にするために
は両面鏡２１の回転速度を９００ｒｐｍにすればよい。
そして、スイッチ４を操作して、モニタ５に表示されて
いる映像を左方向の状況Ｌから右方向の状況Ｒに変更す
る場合には、映像信号VSを静止画像信号SSとしてメモリ
３１に格納するタイミングを、回転角θが１３５度及び
３１５度の時にシフトすればよく、また該シフトは瞬時
に行われる。尚、撮像する方向は上記左右方向に限られ
るものではなく、映像信号VSを静止画像信号SSとしてメ
モリ３１に格納するタイミングを変更することにより、
左右方向を中心とするいずれの方向の状況でもモニタ５
に表示させることができ、かつ、この撮像方向の切り換
えは瞬時に行われる。Therefore, for example, the situation L in the left direction is monitored by the monitor 5.
The video signal VS may be stored in the memory 31 as the still image signal SS when the rotation angle θ is 45 degrees and 225 degrees. In this case, the time required for the double-sided mirror 21 to make a half rotation from 45 degrees to 225 degrees corresponds to the update cycle of the screen of the monitor 5, that is, the frame cycle λ.
Therefore, for example, in order to reduce the frame period λ to 1/30 seconds, the rotation speed of the double-sided mirror 21 may be set to 900 rpm.
When the video displayed on the monitor 5 is changed from the leftward situation L to the rightward situation R by operating the switch 4, the video signal VS is stored in the memory 31 as the still image signal SS. The timing may be shifted when the rotation angle θ is 135 degrees and 315 degrees, and the shift is performed instantaneously. Note that the imaging direction is not limited to the left and right directions, but by changing the timing of storing the video signal VS in the memory 31 as the still image signal SS,
Monitor 5 in any direction centered on the left and right direction
And the switching of the imaging direction is performed instantaneously.
【０００８】尚、本願発明は上記実施例に限定させるも
のではなく、例えばＣＣＤカメラに液晶シャッタ等を付
設すると共に、該ＣＣＤカメラを直接メモリに接続し、
該液晶シャッタの開放タイミングをコントローラで制御
するように構成してＣＣＤカメラから直接メモリに静止
画像信号SSを格納させるようにしてもよい。The present invention is not limited to the above embodiment. For example, a CCD camera may be provided with a liquid crystal shutter or the like, and the CCD camera may be directly connected to a memory.
The opening timing of the liquid crystal shutter may be controlled by a controller so that the still image signal SS is directly stored in the memory from the CCD camera.
【０００９】[0009]
【発明の効果】以上の説明から明らかなように、本発明
は、鏡を一定速度で回転させるだけでよく、所定の位相
で鏡を停止させる必要がないので、該鏡の駆動系が複雑
にならない。また、撮像する方向の切り換えは撮像手段
の作動タイミングを変更するだけでよいので瞬時に該切
り換えを行うことができる。As is apparent from the above description, according to the present invention, it is only necessary to rotate the mirror at a constant speed, and it is not necessary to stop the mirror at a predetermined phase. No. Further, since the switching of the imaging direction only needs to change the operation timing of the imaging means, the switching can be performed instantaneously.
【図１】 本発明の一実施例の構成を示す部分断面図FIG. 1 is a partial sectional view showing the configuration of an embodiment of the present invention.
【図２】 撮像部の平面図FIG. 2 is a plan view of an imaging unit.
【図３】 信号の流れを示すブロック図FIG. 3 is a block diagram showing a signal flow;
【図４】 静止画像信号を格納するタイミングを示すタ
イミングチャートFIG. 4 is a timing chart showing timing for storing a still image signal.
１ 車両 ２ 撮像部 ３ コントローラ ４ スイッチ ５ モニタ ２１ 両面鏡 ２２ ＣＣＤカメラ ２３ モータ ３１ メモリ Reference Signs List 1 vehicle 2 imaging unit 3 controller 4 switch 5 monitor 21 double-sided mirror 22 CCD camera 23 motor 31 memory
Claims (1)
と、該撮像手段による画像を表示する表示手段とを有す
る車両用周囲監視装置であって、上記撮像手段がその視
野に配置した鏡に映し出される上記状況を撮像するもの
において、該鏡を一定速度で回転せしめる鏡回転手段
と、その回転位相を検出する回転位相検出手段と、表示
手段に表示させる画像の撮像タイミングを検出手段の信
号に基づいて鏡が所定の位相になるタイミングに同期さ
せる制御手段とを備えたことを特徴とする車両用周囲監
視装置。1. A vehicle surroundings monitoring device comprising: an image pickup unit for picking up an image of a situation around a vehicle; and a display unit for displaying an image by the image pickup unit. In the imaging of the above-mentioned situation to be projected, mirror rotation means for rotating the mirror at a constant speed, rotation phase detection means for detecting the rotation phase thereof, and imaging timing of an image to be displayed on the display means as a signal of the detection means. Control means for synchronizing the mirror with a timing at which the mirror has a predetermined phase based on the mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4039717A JP2663075B2 (en) | 1992-02-26 | 1992-02-26 | Ambient monitoring system for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4039717A JP2663075B2 (en) | 1992-02-26 | 1992-02-26 | Ambient monitoring system for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05238310A JPH05238310A (en) | 1993-09-17 |
| JP2663075B2 true JP2663075B2 (en) | 1997-10-15 |
Family
ID=12560740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4039717A Expired - Lifetime JP2663075B2 (en) | 1992-02-26 | 1992-02-26 | Ambient monitoring system for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2663075B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040233277A1 (en) * | 2003-05-19 | 2004-11-25 | Miller Eric A. | Multiple-view imaging system |
| US7162153B2 (en) * | 2003-06-25 | 2007-01-09 | Delphi Technologies, Inc. | Apparatus for generating a combined image |
| DE102006004260A1 (en) * | 2006-01-31 | 2007-08-02 | Bayerische Motoren Werke Ag | Camera system for a motor vehicle |
-
1992
- 1992-02-26 JP JP4039717A patent/JP2663075B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05238310A (en) | 1993-09-17 |
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