JP2002337667A - Method for controlling wiper - Google Patents
Method for controlling wiperInfo
- Publication number
- JP2002337667A JP2002337667A JP2001188900A JP2001188900A JP2002337667A JP 2002337667 A JP2002337667 A JP 2002337667A JP 2001188900 A JP2001188900 A JP 2001188900A JP 2001188900 A JP2001188900 A JP 2001188900A JP 2002337667 A JP2002337667 A JP 2002337667A
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- Prior art keywords
- luminance
- wiper
- pixel
- photographing
- information
- 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.)
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- Length Measuring Devices By Optical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、撮影手段として例
えばＣＣＤカメラ等を用いてワイパーの起動を制御する
ワイパー制御方法に関する。[0001] 1. Field of the Invention [0002] The present invention relates to a wiper control method for controlling the activation of a wiper using, for example, a CCD camera or the like as a photographing means.
【０００２】[0002]
【従来の技術】従来では、先ず運転者が、フロントガラ
スへの雨滴の付着を自分自身の目視で認識して、ワイパ
ー用スイッチを操作し、ワイパー起動装置を起動する。2. Description of the Related Art Conventionally, a driver first visually recognizes the attachment of raindrops to a windshield and operates a wiper switch to activate a wiper activation device.
【０００３】[0003]
【発明が解決しようとする課題】ワイパーの起動を降雨
の有無に応じて自動制御する技術の開発は存在しないの
が現状である。At present, there is no technique for automatically controlling the activation of the wiper in accordance with the presence or absence of rain.
【０００４】本発明は、降雨の有無に応じてワイパー起
動の自動制御を図るワイパー制御方法を提供することを
目的とする。[0004] It is an object of the present invention to provide a wiper control method for automatically controlling the activation of the wiper in accordance with the presence or absence of rainfall.
【０００５】[0005]
【課題を解決するための手段】第１発明は、車両室内に
設置した撮影手段で、フロントガラスを撮影し、雨滴検
出手段で、上記撮影手段から得られる撮影情報に上記フ
ロントガラスに付着する雨滴の反射光が含まれるか否か
を検出し、上記撮影情報に、雨滴の反射光が含まれる場
合に、ワイパー起動手段を起動して、上記フロントガラ
スのワイパーを起動することを特徴とする。第２発明
は、車両室内に設置した撮影手段で、フロントガラスを
撮影し、平均輝度算出部で、上記撮影手段から得られる
撮影情報の平均輝度を求め、高輝度検出部で、上記平均
輝度を所定以上超える高輝度にある画素の撮影情報を検
出し、高輝度画素塊検出部で、上記平均輝度を所定以上
超える高輝度にある画素の一塊ずつの連続画素数乃至面
積を求め、高輝度画素塊数計数部で、上記連続面素数乃
至面積程度の高輝度にある画素の塊数を求め、ワイパー
制御部で、上記連続画素数乃至面積程度の高輝度にある
画素の塊数に応じてワイパーの起動、及び起動速度を制
御することを特徴とする。第３発明は、上記撮影カメラ
を、室内バックミラーの裏側乃至裏側近くに配設するこ
とを特徴とする。According to a first aspect of the present invention, a photographing means installed in a vehicle compartment photographs a windshield, and a raindrop detecting means adds raindrops attached to the windshield to photographing information obtained from the photographing means. And detecting whether or not the reflected light of the windshield is included. If the photographing information includes the reflected light of raindrops, the wiper activating means is activated to activate the wiper of the windshield. According to a second aspect of the present invention, the windshield is photographed by a photographing unit installed in the vehicle interior, an average luminance calculating unit obtains an average luminance of photographing information obtained from the photographing unit, and a high luminance detecting unit calculates the average luminance. Detecting photographing information of a pixel having a high luminance exceeding a predetermined value or more, a high-luminance pixel block detection unit obtains a continuous pixel number or area of each block of the high-luminance pixel exceeding the average luminance by a predetermined value or more, and obtains a high-luminance pixel. The lump number counting unit obtains the lump number of pixels having a high luminance of about the continuous surface element number or about the area, and the wiper control unit calculates the number of lump pixels of the high luminance about the continuous pixel number or about the area according to the wiper number. And the activation speed is controlled. A third invention is characterized in that the photographing camera is disposed on the rear side or near the rear side of the interior rearview mirror.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は本実施の形態の要部構成を説明するブロッ
ク図である。本実施の形態では、ワイパーの自動制御を
行うにあたり撮影手段として例えばＣＣＤカメラ等の撮
影カメラ１を使用する。撮影カメラ１は、車両室内にお
いてフロントガラスに向けられて設置されて、フロント
ガラスに付着する雨滴の有無を撮影する。Embodiments of the present invention will be described below. FIG. 1 is a block diagram illustrating a configuration of a main part of the present embodiment. In the present embodiment, when performing automatic control of the wiper, a photographing camera 1 such as a CCD camera is used as photographing means. The photographing camera 1 is installed facing the windshield in the vehicle interior, and photographs whether raindrops adhere to the windshield.
【０００７】撮影カメラ１の設置位置には、室内のフロ
ントパネル上でも良いが、例えば室内バックミラーの裏
側乃至裏側近くか、あるいはバックミラー支持体の所要
の位置の裏側が好ましく、例えば室内バックミラーの裏
側乃至裏側近くから車両のボンネットよりも上方で、ボ
ンネット先端の位置よりも若干上方の位置に撮影方向を
向ける。この場合、夜間の走行時には、ヘッドライトの
光の照射で、ボンネット前方の明るい範囲を撮影でき
る。The installation position of the photographing camera 1 may be on a front panel in a room. For example, the rear side of the indoor rear-view mirror or near the rear side or a rear side of a required position of the rear-view mirror support is preferable. The photographing direction is directed to a position slightly above the position of the front end of the hood, above the hood of the vehicle, from the rear side or near the rear side of the vehicle. In this case, at the time of traveling at night, a bright area in front of the hood can be photographed by irradiation of the headlight.
【０００８】昼間に、フロントガラスに雨滴が付着する
と、フロントガラスの雨滴位置は、外界の光が雨滴で屈
折して、外界の明るさよりも明るく輝く。又、夜間に、
ヘッドライトを点灯して、フロントガラスの雨滴位置か
らヘッドライトの明るい領域を観察すると、やはりヘッ
ドライトの光が雨滴で屈折して、ヘッドライトによる明
るい領域よりも明るく輝く。In the daytime, when raindrops adhere to the windshield, the position of the raindrops on the windshield shines brighter than the brightness of the external world because the external light is refracted by the raindrops. Also, at night,
When the headlight is turned on and the bright area of the headlight is observed from the position of the raindrop on the windshield, the light of the headlight is also refracted by the raindrop and shines brighter than the bright area of the headlight.
【０００９】本実施の形態では、昼間では外界の明るさ
の撮影上の平均輝度の変化に対する雨滴付着の輝度の変
化を観測して、外界の明るさの輝度に対する雨滴検出の
最低輝度を定め、当該最低輝度以上の輝度の画素が検出
された場合に、雨滴の存在を認識する。夜間ではヘッド
ライトの照射光の撮影上の平均輝度と雨滴付着の輝度と
を観測して、雨滴検出の最低輝度を定め、同様に雨滴の
存在を認識する。In the present embodiment, in the daytime, the change in the luminance of the raindrop with respect to the change in the average luminance in photographing the external brightness is observed, and the minimum luminance of raindrop detection with respect to the luminance of the external world is determined. When a pixel having a luminance equal to or higher than the minimum luminance is detected, the presence of a raindrop is recognized. At night, the average brightness of the photographed light of the headlight and the brightness of raindrop adhesion are observed to determine the minimum brightness of raindrop detection, and the presence of raindrops is similarly recognized.
【００１０】雨滴の認識に際しては、雨滴の径（高輝度
画素の連続数）、あるいは面積が所定範囲内であること
を確認するということは、昼間、撮影カメラ１の撮影領
域内に、太陽光を相当に明るく反射する路面上の白線等
が進入して、雨滴検出の最低輝度を超えた場合に、白線
等を雨滴と誤認識することを回避するためである。When recognizing raindrops, confirming that the diameter (the number of continuous high-luminance pixels) or the area of the raindrops is within a predetermined range means that, during the daytime, sunlight is captured in the photographing area of the photographing camera 1. This is to prevent the white line or the like from being erroneously recognized as a raindrop when a white line or the like on the road surface that reflects the light significantly enters and exceeds the minimum luminance of raindrop detection.
【００１１】先ず、撮影カメラ１の撮影情報は、雨滴検
出手段Ａｕの平均輝度算出部３へ入力される。平均輝度
算出部３は、一画面中の各画素毎における撮影情報の輝
度を検出すると共に、各画素毎の撮影情報の輝度の平均
輝度を求める。例えば最低輝度を０、最高輝度を２５５
あるいは更に多くの数を割り当て、各画素毎の数値を総
計して、全画素数で除算することにより平均輝度が求め
られる。First, photographing information of the photographing camera 1 is inputted to the average luminance calculating section 3 of the raindrop detecting means Au. The average brightness calculation unit 3 detects the brightness of the shooting information for each pixel in one screen and obtains the average brightness of the shooting information for each pixel. For example, the lowest luminance is 0 and the highest luminance is 255
Alternatively, an average luminance is obtained by assigning a larger number, summing up the numerical values for each pixel, and dividing by the total number of pixels.
【００１２】一方、平均輝度算出部３が求めた平均輝度
の情報と、撮影カメラ１の撮影情報とは、高輝度検出部
５へ入力される。高輝度検出部５は、一旦設定された平
均輝度を所定以上超える輝度にある輝度情報を、一画面
中の各画素毎における撮影情報の輝度を検索しつつ求め
る。即ち、平均輝度算出部３が求めた撮影画面の平均輝
度と各画素の輝度とを比較し、あらかじめ平均輝度算出
部３により設定された平均輝度を所定以上超える雨滴検
出の最低輝度以上の輝度にある画素情報を検出する。か
くて雨滴検出の最低輝度以上の画素情報を検出した場
合、当該画素情報のＸ−Ｙ座標系を求め、Ｘ−Ｙ座標系
の情報を高輝度画素塊検出部７へ出力する。On the other hand, the information of the average luminance obtained by the average luminance calculating section 3 and the photographing information of the photographing camera 1 are inputted to the high luminance detecting section 5. The high-brightness detection unit 5 obtains luminance information having a luminance exceeding a once-set average luminance by a predetermined value or more while searching for luminance of photographing information for each pixel in one screen. That is, the average luminance of the photographed screen obtained by the average luminance calculation unit 3 is compared with the luminance of each pixel, and the average luminance set in advance by the average luminance calculation unit 3 is set to a luminance not lower than the minimum luminance of raindrop detection that exceeds a predetermined value. Detects certain pixel information. In this way, when pixel information of the minimum luminance or more is detected for raindrop detection, the XY coordinate system of the pixel information is obtained, and the information of the XY coordinate system is output to the high luminance pixel block detection unit 7.
【００１３】高輝度画素塊検出部７は、雨滴検出の最低
輝度以上の撮影情報のＸ−Ｙ座標系の情報を全て一時記
憶部に記憶して、互いに隣合う各画素毎のＸ−Ｙ座標系
の情報を１ブロック化し、当該１ブロックの情報の大き
さを求める。隣合う各画素毎のＸ−Ｙ座標系の情報の連
続数をカウントすることで、当該１ブロックの雨滴情報
の大きさが解る。隣合う各画素毎のＸ−Ｙ座標系の雨滴
情報の連続数を全てカウントすると面積が解り、面積を
用いると雨滴検出の信頼性が増す。但し、雨滴情報の例
えば縦横の外径同士を乗算して、演算上で面積を求めて
も良い。尚、各画素毎の撮影情報を微分回路に入力し
て、雨滴情報のエッジを求め、エッジ内の面積を計算す
ることで求めることも可能である。かくて１ブロック毎
の雨滴情報の画素連続数、即ち高輝度画素の連続数、あ
るいは面積の情報は、全て他の一時記憶に記憶される。The high-luminance pixel block detection unit 7 stores all the information of the XY coordinate system of the photographing information of the minimum luminance or more in the raindrop detection in the temporary storage unit, and stores the XY coordinates of each pixel adjacent to each other. The system information is divided into one block, and the size of the information of the one block is determined. By counting the number of consecutive pieces of information in the XY coordinate system for each adjacent pixel, the size of the raindrop information of the one block can be determined. Counting all the continuous numbers of the raindrop information in the XY coordinate system for each adjacent pixel reveals the area, and using the area increases the reliability of raindrop detection. However, the area may be obtained by calculation by multiplying, for example, the vertical and horizontal outer diameters of the raindrop information. Note that it is also possible to input the photographing information for each pixel to the differentiating circuit, obtain the edge of the raindrop information, and calculate the area within the edge. Thus, the number of consecutive pixels of the raindrop information for each block, that is, the number of consecutive high-luminance pixels or the information of the area is all stored in another temporary storage.
【００１４】高輝度画素塊数計数部９は、上記一時記憶
から、高輝度画素塊検出部７が検出した１ブロック毎の
雨滴情報の画素連続数、あるいは面積の情報を検索し
て、各１ブロック毎の雨滴情報と、雨滴認識に値する画
素連続数以下、あるいは面積以下にある雨滴判定情報と
を比較し、雨滴判定情報以下の大きさにある１ブロック
毎の雨滴情報の数を計数する。計数結果は、例えば所定
時間毎に、詳しくはワイパーが起動した毎にリセットさ
れて、最新の計数結果の情報がワイパー制御部１１へ出
力される。The high-brightness pixel block number counting section 9 searches the temporary storage for the number of continuous pixels or area information of the raindrop information for each block detected by the high-brightness pixel block detection section 7, and obtains one for each. The raindrop information for each block is compared with the raindrop determination information that is equal to or less than the number of continuous pixels or the area that is worthy of raindrop recognition, and the number of pieces of raindrop information for each block that is equal to or smaller than the raindrop determination information is counted. The count result is reset, for example, every predetermined time, specifically, every time the wiper is activated, and the latest count result information is output to the wiper control unit 11.
【００１５】ワイパー制御部１１は、高輝度画素塊数計
数部９が計数した計数情報に応じてワイパーの起動タイ
ミングと起動速度を設定し、例えば計数情報が所定の計
数値に達する起動タイミング毎に、ワイパー駆動用モー
タの起動を指示する起動指示信号と、ワイパー駆動用モ
ータの起動速度の程度を制御する起動速度制御信号とを
出力する。雨量が少ない場合、計数情報が所定の計数値
に達するまでは比較的に長い時間が掛かり、雨量が多い
場合には、計数情報が所定の計数値に達するまで多くの
時間を要しない。従って、ワイパー制御部１１は、ワイ
パーを起動した時点でタイマを設定して、タイマの時間
経過と共に計数情報が所定の計数値に達する場合に、ワ
イパー駆動用モータに時間経過の長短に応じた起動速度
の起動力を与える起動信号を出力すると共にタイマをク
リアするという手法でも良いが、タイマを設定せずに、
雨滴検出の数量が所定数に達する毎に、ワイパー駆動用
モータに起動信号を出力する手法をとるという手法でも
良い。The wiper control unit 11 sets a start timing and a start speed of the wiper in accordance with the count information counted by the high-brightness pixel block number count unit 9. For example, each time the count information reaches a predetermined count value, the start timing is set. And outputs a start instruction signal for instructing start of the wiper drive motor and a start speed control signal for controlling the degree of start speed of the wiper drive motor. When the rainfall is small, it takes a relatively long time until the count information reaches the predetermined count value, and when the rainfall is large, it does not take much time until the count information reaches the predetermined count value. Accordingly, the wiper control unit 11 sets a timer when the wiper is started, and when the count information reaches a predetermined count value with the elapse of the timer, the wiper driving motor starts the wiper according to the length of time. A method of outputting a start signal that gives a speed start force and clearing the timer may be used, but without setting the timer,
A method of outputting a start signal to the wiper driving motor every time the number of raindrops detected reaches a predetermined number may be employed.
【００１６】即ち前者の場合、時間経過と計数情報との
関係でワイパー駆動用モータの起動タイミングと起動速
度とを制御する技術思想であるが、後者の場合、ワイパ
ーの起動速度を一定に保ちつつワイパーを起動する技術
思想である。That is, in the former case, the technical idea is to control the start-up timing and the start-up speed of the wiper driving motor in relation to the passage of time and the count information. In the latter case, the start-up speed of the wiper is kept constant. It is a technical idea to activate the wiper.
【００１７】図２は本実施の形態の制御例を説明するフ
ローチャートである。ステップ２０１では、例えばエン
ジン始動と共に撮影カメラ１が起動されてフロントガラ
スの撮影が開始される。ステップ２０２では、撮影カメ
ラ１の撮影情報が平均輝度算出部３に順次に取込まれ
て、一画面あたりの全撮影情報の平均輝度が算出され、
更に一時記憶に記憶される。ステップ２０３では、高輝
度検出部５が起動されて撮影カメラ１の撮影情報が取込
まれ、全撮影情報の中から今回の平均輝度を所定以上越
える雨滴検出の最低輝度以上の輝度にある画素の撮影情
報が検出される。ステップ２０４では、高輝度画素塊検
出部７が起動されて、一画面中で、雨滴検出の最低輝度
以上の輝度にある画素のうち、一体に隣合う画素群の１
ブロック毎の雨滴情報の塊が検出される。続くステップ
２０５では、高輝度画素塊数計数部が起動されて、上記
連続画素数乃至面積程度の高輝度にある画素の１ブロッ
ク毎の塊数が求められる。FIG. 2 is a flowchart for explaining a control example of the present embodiment. In step 201, for example, the photographing camera 1 is started when the engine is started, and photographing of the windshield is started. In step 202, the photographing information of the photographing camera 1 is sequentially taken into the average luminance calculating section 3, and the average luminance of all photographing information per one screen is calculated.
Further, it is stored in a temporary storage. In step 203, the high-luminance detecting unit 5 is activated to capture the photographing information of the photographing camera 1, and among all the photographing information, a pixel having a luminance equal to or higher than the minimum luminance of raindrop detection that exceeds the current average luminance by a predetermined value or more is detected. Photographing information is detected. In step 204, the high-brightness pixel block detection unit 7 is activated, and one pixel of a group of pixels that are adjacent to one another among pixels having a luminance equal to or higher than the minimum luminance for raindrop detection in one screen.
A block of raindrop information for each block is detected. In the following step 205, the high-brightness pixel block number counting unit is activated, and the number of blocks per block of high-brightness pixels of about the number of continuous pixels or area is obtained.
【００１８】ステップ２０６では、各１ブロック毎の雨
滴情報と、雨滴認識に値する画素連続数程度、あるいは
面積程度にある雨滴判定情報とが比較されて、雨滴判定
情報程度の大きさにある１ブロック毎の雨滴情報の数が
計数される。ステップ２０７では、タイマが起動されて
時間計数が開始され、テップ２０８では、雨滴判定情報
程度の大きさにある１ブロック毎の雨滴情報の数がワイ
パーを起動すべき所定の数以上に達したか否かが定され
る。雨滴情報が所定数以上に達しない場合、ステップ２
０７、２０８を繰り返すが、所定数以上に達した場合、
ステップ２０９へ進んで、ワイパー制御部１１が起動さ
れて雨滴情報の数と時間経過との関係からワイパー駆動
用モータの起動速度が設定され、ステップ２１０で時間
計数がリセットされる一方で、ステップ２１１へ進んで
ワイパー駆動用モータへ起動指示信号、及び起動速度制
御信号が出力され、ステップ２０１へ戻る。In step 206, the raindrop information of each block is compared with the raindrop determination information of about the number of consecutive pixels or the area corresponding to the recognition of the raindrop, and one block having the size of the raindrop determination information is compared. The number of raindrop information for each is counted. In step 207, the timer is started to start counting the time. In step 208, it is determined whether the number of pieces of raindrop information for each block, which is about the size of the raindrop determination information, has reached a predetermined number or more for starting the wiper. It is determined whether or not. If the raindrop information does not reach the predetermined number or more, step 2
07 and 208 are repeated, but when the number reaches a predetermined number or more,
Proceeding to step 209, the wiper control section 11 is activated to set the activation speed of the wiper driving motor from the relationship between the number of raindrop information and the passage of time. Then, a start instruction signal and a start speed control signal are output to the wiper driving motor, and the process returns to step 201.
【００１９】本実施の形態では、高輝度画素塊計数部９
がフロントガラスに付着する雨滴の数を計数して所定数
に達する時に、ワイパー制御部１１を起動させ、ワイパ
ーを起動するようにしたから、運転者が雨滴を認識して
スイッチ操作を行うという作業が一切不要となり、自動
的にワイパーの起動を制御でき、運転中に天候の変化に
応じてスイッチ操作を繰り返す必要がない。In this embodiment, the high-luminance pixel block counting section 9
Counts the number of raindrops adhering to the windshield and activates the wiper when the number reaches a predetermined number, so that the wiper is started. Therefore, the driver recognizes the raindrops and performs a switch operation. Is not required at all, the start of the wiper can be automatically controlled, and there is no need to repeat the switch operation according to the weather change during driving.
【００２０】又、高輝度画素塊検出部７が雨滴検出の最
低輝度以上の輝度にある撮影情報の中から雨滴判定情報
以下にある雨滴情報を検出した場合に限り、ワイパー制
御部１１の起動が可能となるから、例えば昼間に太陽光
が強く、撮影カメラ１が太陽光を強く反射して雨滴検出
の最低輝度以上の輝度になる路面上の白線等を撮影した
場合でも、ワイパーが誤動作することを回避できる。The wiper control unit 11 is activated only when the high-luminance pixel block detection unit 7 detects raindrop information that is equal to or less than raindrop determination information from photographing information that has brightness equal to or higher than the minimum brightness of raindrop detection. For example, the wiper may malfunction even when the sunlight is strong in the daytime and the photographing camera 1 captures a white line or the like on a road surface that has a luminance higher than the minimum luminance for raindrop detection by strongly reflecting the sunlight. Can be avoided.
【００２１】尚、図示のフローチャートには記載されて
いないが、雨滴を検出する場合、雨滴検出の面積を５段
階や、１０段階に振り分け、現在検出される雨滴の面積
をどの段階にある面積かを認識し、認識結果に応じてワ
イパーの起動、及び起動速度を決定するという手法でも
良い。例えば５段階に設定した場合、雨滴の極小さい第
１段階では、例えば１００個の雨滴検出時にワイパーを
弱で起動させ、雨滴の比較的に小さい第２段階では、例
えば８０個の雨滴検出時にワイパーを弱で起動させ、雨
滴の普通の大きさである第３段階では、例えば６０個の
雨滴検出時にワイパーを普通で起動させ、雨滴の比較的
大きい第４段階では、例えば４０個の雨滴検出時にワイ
パーを強で起動させ、雨滴の非常に大きい第５段階で
は、例えば２０個の雨滴検出時にワイパーを最高の強で
起動させるという手法である。Although not shown in the flow chart in the drawing, when detecting raindrops, the area of raindrop detection is divided into five or ten steps, and the area of the currently detected raindrop is determined at which level. May be recognized, and the activation of the wiper and the activation speed may be determined according to the recognition result. For example, when five stages are set, in the first stage where the raindrop is extremely small, the wiper is activated weakly when, for example, 100 raindrops are detected. In a third stage where the size of raindrops is normal, the wiper is started normally when, for example, 60 raindrops are detected, and in a fourth stage where raindrops are relatively large, for example, when 40 raindrops are detected. In a fifth stage in which the wiper is activated with a high strength and the raindrop is very large, the wiper is activated with the highest strength when, for example, 20 raindrops are detected.
【００２２】但し、雨滴の数量をカウントする場合、撮
影カメラ１の撮影範囲の大きさにより異なるので、撮影
範囲を小さくすれば、ワイパー起動に対する雨滴の検出
数量の設定も少なくなる。However, when the number of raindrops is counted, it differs depending on the size of the photographing range of the photographing camera 1. Therefore, if the photographing range is made smaller, the setting of the number of raindrops to be detected when the wiper is activated becomes smaller.
【００２３】[0023]
【発明の効果】本発明によれば、雨量に応じてワイパー
の起動と起動速度とを自動的に制御でき、運転者の意識
を運転にのみ集中させることができる。According to the present invention, the activation and the activation speed of the wiper can be automatically controlled in accordance with the amount of rainfall, and the driver's consciousness can be concentrated only on driving.
【図１】本発明の実施の形態の要部構成を説明するブロ
ック図である。FIG. 1 is a block diagram illustrating a main configuration according to an embodiment of the present invention.
【図２】本発明の実施の形態の制御例を説明するフロー
チャートである。FIG. 2 is a flowchart illustrating a control example according to the embodiment of the present invention.
１ 撮影カメラ ３ 平均輝度算出部 ５ 高輝度検出部 ７ 高輝度画素塊検出部 ９ 高輝度画素塊計数部 １１ ワイパー制御部 REFERENCE SIGNS LIST 1 photographing camera 3 average luminance calculating section 5 high luminance detecting section 7 high luminance pixel block detecting section 9 high luminance pixel block counting section 11 wiper control section
Claims (3)
トガラスを撮影し、雨滴検出手段で、上記撮影手段から
得られる撮影情報に上記フロントガラスに付着する雨滴
の反射光が含まれるか否かを検出し、 上記撮影情報に、雨滴の反射光が含まれる場合に、ワイ
パー起動手段を起動して、上記フロントガラスのワイパ
ーを起動する、 ことを特徴とするワイパー制御方法。1. A windshield is photographed by photographing means installed in a vehicle cabin, and raindrop detecting means determines whether photographing information obtained from the photographing means includes reflected light of raindrops attached to the windshield. And detecting, when the photographing information includes reflected light of raindrops, activating a wiper activating means to activate a wiper of the windshield.
トガラスを撮影し、平均輝度算出部で、上記撮影手段か
ら得られる撮影情報の平均輝度を求め、 高輝度検出部で、上記平均輝度を所定以上超える高輝度
にある画素の撮影情報を検出し、 高輝度画素塊検出部で、上記平均輝度を所定以上超える
高輝度にある画素の一塊ずつの連続画素数乃至面積を求
め、 高輝度画素塊数計数部で、上記連続画素数乃至面積程度
の高輝度にある画素の塊数を求め、 ワイパー制御部で、上記連続画素数乃至面積程度の高輝
度にある画素の塊数に応じてワイパーの起動、及び起動
速度を制御する、 ことを特徴とするワイパー制御方法。2. A windshield is photographed by photographing means installed in a vehicle cabin, an average luminance calculating section determines an average luminance of photographing information obtained from the photographing means, and a high luminance detecting section calculates the average luminance. Detecting photographing information of a pixel having a high luminance exceeding a predetermined value or more, a high-luminance pixel block detecting unit obtains a continuous pixel number or area of each block of the high-luminance pixel exceeding the average luminance by a predetermined value or more, and The lump number counting unit obtains the lump number of pixels having high luminance of about the number of continuous pixels to the area, and the wiper control unit wipes the wiper according to the lump number of pixels having high luminance of about the number of continuous pixels to the area. And controlling a start-up speed of the wiper.
側乃至裏側近くに配設する、 ことを特徴とする請求項１又は２記載のワイパー制御方
法。3. The wiper control method according to claim 1, wherein the photographing means is disposed on a rear side or near a rear side of the indoor rear-view mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188900A JP2002337667A (en) | 2001-05-18 | 2001-05-18 | Method for controlling wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188900A JP2002337667A (en) | 2001-05-18 | 2001-05-18 | Method for controlling wiper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002337667A true JP2002337667A (en) | 2002-11-27 |
Family
ID=19027906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188900A Pending JP2002337667A (en) | 2001-05-18 | 2001-05-18 | Method for controlling wiper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002337667A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309655A (en) * | 2006-05-16 | 2007-11-29 | Nippon Soken Inc | Raindrop detector and wiper control device |
| JP2014133423A (en) * | 2013-01-08 | 2014-07-24 | Mazda Motor Corp | Raindrop detection device |
| JP2014531641A (en) * | 2011-09-07 | 2014-11-27 | ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー | Method and camera assembly for detecting raindrops on a vehicle windshield |
-
2001
- 2001-05-18 JP JP2001188900A patent/JP2002337667A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309655A (en) * | 2006-05-16 | 2007-11-29 | Nippon Soken Inc | Raindrop detector and wiper control device |
| JP4668838B2 (en) * | 2006-05-16 | 2011-04-13 | 株式会社日本自動車部品総合研究所 | Raindrop detection device and wiper control device |
| JP2014531641A (en) * | 2011-09-07 | 2014-11-27 | ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー | Method and camera assembly for detecting raindrops on a vehicle windshield |
| JP2014133423A (en) * | 2013-01-08 | 2014-07-24 | Mazda Motor Corp | Raindrop detection device |
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