JP2019064348A - Headlight control device - Google Patents
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Description
本発明は、前方の車両の位置に応じて前照灯の動作を制御する前照灯制御装置に関する。 The present invention relates to a headlamp control apparatus that controls the operation of a headlamp according to the position of a vehicle ahead.
配光可変ヘッドランプ（ＡＤＢ）を搭載した車両では、車載カメラで前方の車両を認識し、車両の位置に応じてヘッドランプの配光を自動的に制御して、運転者に眩惑を与えるヘッドランプの光を遮断する。例えば特許文献１に記載のヘッドランプでは、ハイビーム点灯時に、対向車が存在する範囲のみ消灯し、対向車の位置に合わせて消灯／点灯を連続的に行う前照灯制御が行われる。このように、対向車や先行車に眩しさを与えることなく、運転者の視認性を高めることができる。 In a vehicle equipped with a variable light distribution headlamp (ADB), the onboard camera recognizes the front vehicle, automatically controls the light distribution of the headlamp according to the position of the vehicle, and gives the driver a dazzling head Shut off the light of the lamp. For example, in the headlamp described in Patent Document 1, when the high beam is turned on, only the range where the oncoming vehicle is present is turned off, and the headlight control is performed to continuously turn off / turn on according to the position of the oncoming vehicle. Thus, the driver's visibility can be enhanced without giving glare to oncoming vehicles or preceding vehicles.
配光可変ヘッドランプにおける前照灯制御において、前方の車両の検出は車内に取り付けられたカメラによって行われる。ここで、カメラやヘッドランプには、取付ばらつきや製造ばらつきが生じる。そのため、ヘッドランプの実際に照射する範囲が基準照射範囲からずれる。基準照射範囲に基づいてヘッドランプの配光を制御すると、車両が存在する、本来照射してはいけない範囲を照射してしまう。照射された車両の運転者が眩惑するおそれがある。 In headlight control in a light distribution variable headlamp, detection of a vehicle ahead is performed by a camera mounted in the vehicle. Here, mounting variations and manufacturing variations occur in the camera and the headlamp. Therefore, the range to which the headlamp is actually irradiated deviates from the reference irradiation range. If the light distribution of the headlamp is controlled based on the reference irradiation range, the area where the vehicle exists and which should not be originally irradiated may be irradiated. The driver of the irradiated vehicle may be dazzled.
このようなばらつきによる照射範囲のずれの対策として、前方の車両が照射範囲に入らないように、認識した車両の位置に対して十分なマージンを取って、ヘッドランプの消灯を制御する。マージンを取り過ぎると、ヘッドランプが消灯される範囲が大きくなり、運転者の視認性が悪くなる。 As a measure against the deviation of the irradiation range due to such a variation, a sufficient margin is taken with respect to the position of the recognized vehicle so that the front vehicle does not enter the irradiation range, and the turning off of the headlamp is controlled. If the margin is taken too much, the range in which the headlamp is turned off becomes large, and the driver's visibility becomes worse.
本発明は、上記に鑑み、各種のばらつきによって実際の照射範囲にずれが生じていても、ヘッドランプの配光を精度よく制御することができる前照灯制御装置の提供を目的とする。 In view of the above, it is an object of the present invention to provide a headlamp control device capable of precisely controlling light distribution of a headlamp even if deviations occur in an actual irradiation range due to various variations.
本発明の前照灯制御装置は、連続した個別の範囲を照射する複数のランプから構成された前照灯と、車両検出部によって検出された前方の車両の位置に応じて各ランプの動作を制御する照射制御装置とを備え、車両検出部によって検出された各ランプの実際の照射範囲と基準照射範囲とのずれを算出するずれ検出装置が設けられ、照射制御装置は、照射範囲のずれに応じて動作させるランプを変更する。 The headlight control apparatus according to the present invention operates the respective lamps according to the headlight composed of a plurality of lamps irradiating a continuous individual range, and the position of the front vehicle detected by the vehicle detection unit. A deviation detection device is provided which includes an irradiation control device for controlling and calculates a deviation between the actual irradiation range of each lamp detected by the vehicle detection unit and the reference irradiation range, and the irradiation control device detects the deviation of the irradiation range. Change the lamp to operate accordingly.
ランプの実際の照射範囲から照射範囲のずれが算出される。各ランプの照射範囲と検出された車両との相対的な位置関係を算出されたずれに応じて補正する。これにより、車両に対する照射範囲が変わる。すなわち、点灯して車両を照射してしまうランプは消灯され、車両を照射することはない。本来点灯すべきであるにもかかわらず消灯しているランプは点灯され、車両のない範囲を照射できる。 The deviation of the irradiation range is calculated from the actual irradiation range of the lamp. The relative positional relationship between the irradiation range of each lamp and the detected vehicle is corrected according to the calculated deviation. This changes the irradiation range for the vehicle. That is, the lamp which lights up and irradiates the vehicle is turned off, and the vehicle is not irradiated. A lamp that is off although it should be on is turned on and can illuminate areas that do not have a vehicle.
本発明によると、実際の照射範囲にずれがあっても、車両以外の照射すべき範囲は照射でき、車両は照射されない。したがって、照射しない範囲を絞り込むことができ、照射される範囲が広がり、運転者の視認性を高めることができる。 According to the present invention, even if the actual irradiation range deviates, the irradiation range other than the vehicle can be irradiated and the vehicle is not irradiated. Therefore, the range which is not irradiated can be narrowed down, the range which is irradiated can be extended, and the visibility of the driver can be enhanced.
本発明の実施形態の車両の前照灯制御装置は、図１に示すように、連続した個別の範囲を照射する複数のランプから構成された前照灯１と、各ランプの消灯／点灯の動作を制御する照射制御装置２とから構成される。 The headlight control apparatus for a vehicle according to the embodiment of the present invention, as shown in FIG. 1, includes a headlight 1 composed of a plurality of lamps for irradiating successive individual ranges, and turn-off / lighting of each lamp It is comprised from the irradiation control apparatus 2 which controls operation | movement.
前照灯１は、ロービーム用のランプとハイビーム用のランプを備えている。ロービーム用のランプは、一般的なハロゲンランプあるいはディスチャージヘッドランプとされる。ハイビーム用のランプは、前方の車両の位置に応じて配光を自動的に制御される配光可変ヘッドランプとされ、複数のＬＥＤランプから左右一対に構成される。左右の各ＬＥＤランプは、横一列に配列され、図２に示すように、連続した個別の範囲をそれぞれ照射する。なお、ＬＥＤランプは左右に３個ずつとされるが、個数はこれに限定されない。 The headlight 1 includes a low beam lamp and a high beam lamp. The low beam lamp is a general halogen lamp or discharge headlamp. The high beam lamps are light distribution variable headlamps that automatically control the light distribution according to the position of the vehicle ahead, and are configured as a pair of left and right LEDs. The left and right LED lamps are arranged in a row, and as shown in FIG. Although three LED lamps are provided on the left and right, the number is not limited to this.
照射制御装置２は、前方の先行車および対向車を検出する車両検出部３と、前方の車両の位置に応じて照射範囲を決める照射範囲演算部４と、照射範囲に応じて前照灯１の各ＬＥＤランプを動作させる照射制御部５とを有する。 The irradiation control device 2 includes a vehicle detection unit 3 that detects a preceding vehicle ahead and an oncoming vehicle, an irradiation range calculation unit 4 that determines the irradiation range according to the position of the vehicle ahead, and the headlight 1 according to the irradiation range. And an irradiation control unit 5 for operating each of the LED lamps.
車両検出部３は、車室内に取り付けられたカメラが撮影した画像から車両の有無を検出する。図３に示すように、前方に対向車があるとき、車両検出部３は、撮影された画像から車両を認識し、車両の位置を判断する。照射範囲演算部４は、車両の位置に対応する照射範囲および車両のない照射範囲を特定する。照射制御部５は、それぞれ特定された照射範囲に対応するＬＥＤランプの消灯あるいは点灯を行う。遮光すべき車両がある照射範囲（遮光範囲）に対するＬＥＤランプは消灯される。車両がない照射範囲に対するＬＥＤランプは点灯される。 The vehicle detection unit 3 detects the presence or absence of a vehicle from an image captured by a camera mounted in a vehicle compartment. As shown in FIG. 3, when there is an oncoming vehicle ahead, the vehicle detection unit 3 recognizes the vehicle from the photographed image, and determines the position of the vehicle. The irradiation range calculation unit 4 specifies the irradiation range corresponding to the position of the vehicle and the irradiation range without the vehicle. The irradiation control unit 5 turns off or turns on the LED lamps corresponding to the specified irradiation ranges. The LED lamp is turned off with respect to the irradiation range (light shielding range) where there is a vehicle to be shielded. The LED lamp for the illumination range where there is no vehicle is turned on.
ところで、ＬＥＤランプあるいはカメラには、取付ばらつきや製造ばらつきが生じる。本来車両がある照射範囲には照射されないが、各種のばらつきがあると、図４に示すように、本来点灯してはいけないＬＥＤランプが点灯し、このＬＥＤランプの照射範囲にある車両が照射される。この対策として、図５に示すように、ＬＥＤランプを消灯して、照射しない範囲を広げる。これにより、車両には照射されないが、車両の周囲も照射されない。そのため、前照灯の照射範囲が狭くなり、運転者の視認性が悪くなる。 By the way, mounting variations and manufacturing variations occur in the LED lamp or the camera. Although the irradiation range where the vehicle is originally is not irradiated, if there are various variations, as shown in FIG. 4, the LED lamp which should not be originally lit is turned on, and the vehicle within the irradiation range of this LED lamp is irradiated Ru. As a countermeasure, as shown in FIG. 5, the LED lamp is turned off to widen the non-irradiation range. Thereby, although not irradiated to a vehicle, the circumference of a vehicle is not irradiated, either. Therefore, the irradiation range of the headlights narrows, and the driver's visibility deteriorates.
そこで、取付ばらつきによって生じる照射範囲のずれを解消するために、前照灯制御装置は、ＬＥＤランプやカメラの取付ばらつきなどによって生じる照射範囲のずれを検出するずれ検出装置１０を備え、照射制御装置２は、ずれに対する照射範囲の補正を行い、補正後の照射範囲に基づいて動作させるＬＥＤランプを変える。 Therefore, in order to eliminate the deviation of the irradiation range caused by the mounting variation, the headlamp control device includes the deviation detection device 10 for detecting the deviation of the irradiation range caused by the mounting variation of the LED lamp or the camera, 2 corrects the irradiation range for deviation, and changes the LED lamp to be operated based on the corrected irradiation range.
ずれ検出装置１０は、車載カメラを用いて撮影した画像から実際の照射範囲を検出する照射範囲検出部１１と、実際の照射範囲と基準照射範囲との差分からずれ量を演算する照射範囲ずれ量演算部１２とを有する。 The deviation detection device 10 detects the actual irradiation range from the image captured using the on-vehicle camera, and the irradiation range deviation amount that calculates the deviation amount from the difference between the actual irradiation range and the reference irradiation range. And an operation unit 12.
照射範囲検出部１１は、各ＬＥＤランプの点灯および消灯を行って、車載カメラが撮影した画像から各ＬＥＤランプの照射範囲を検出する。図６に示すように、ＬＥＤランプ２だけを消灯し、他のＬＥＤランプを点灯する。明暗の差からＬＥＤランプ１の照射範囲の左右方向の端を認識でき、ＬＥＤランプ１の照射範囲を特定できる。 The irradiation range detection unit 11 turns on and off each LED lamp, and detects the irradiation range of each LED lamp from the image captured by the on-vehicle camera. As shown in FIG. 6, only the LED lamp 2 is turned off and the other LED lamps are turned on. From the difference between light and dark, the left and right ends of the irradiation range of the LED lamp 1 can be recognized, and the irradiation range of the LED lamp 1 can be specified.
照射範囲ずれ量演算部１２は、ＬＥＤランプ毎に検出した実際の照射範囲と基準照射範囲とを比較する。実際の照射範囲を図７に示す。基準照射範囲を図２に示す。これらを比べると、ＬＥＤランプ１〜３が右側にずれている。照射範囲ずれ量演算部１２は、実際の照射範囲のなす角度と基準照射範囲のなす角度の差分を取り、ずれ量を算出して、照射範囲演算部４に出力する。なお、基準照射範囲は予め内蔵のメモリに記憶しておくか、演算時に外部の記憶装置から取得する。 The irradiation range shift amount calculation unit 12 compares the actual irradiation range detected for each LED lamp with the reference irradiation range. The actual irradiation range is shown in FIG. The reference irradiation range is shown in FIG. Comparing these, the LED lamps 1 to 3 are shifted to the right. The irradiation range deviation amount calculation unit 12 calculates the deviation amount by calculating the difference between the angle formed by the actual irradiation range and the angle formed by the reference irradiation range, and outputs the calculated deviation amount to the irradiation range calculation unit 4. The reference irradiation range may be stored in advance in a built-in memory or acquired from an external storage device at the time of calculation.
例えば、ＬＥＤランプ１の基準照射範囲の角度は１０度〜１５度、ＬＥＤランプ２の基準照射範囲の角度は５度〜１０度、ＬＥＤランプ３の基準照射範囲の角度は０度〜５度とする。各ＬＥＤランプ１〜３の実際の照射範囲の角度は、それぞれ１３度〜１８度、８度〜１３度、３度〜８度である。この場合、ずれ量は３度となる。 For example, the angle of the reference irradiation range of the LED lamp 1 is 10 to 15 degrees, the angle of the reference irradiation range of the LED lamp 2 is 5 to 10 degrees, and the angle of the reference irradiation range of the LED lamp 3 is 0 to 5 degrees Do. The angles of the actual irradiation range of each of the LED lamps 1 to 3 are 13 to 18 degrees, 8 to 13 degrees, and 3 to 8 degrees, respectively. In this case, the deviation amount is 3 degrees.
照射範囲演算部４は、入力されたずれ量を補正量として、実際の照射範囲に対応するように各ＬＥＤランプの照射範囲の角度を演算する。照射制御部５は、車両に対応する照射範囲（遮光範囲）のＬＥＤランプを消灯させ、それ以外のＬＥＤランプを点灯させる。 The irradiation range calculation unit 4 calculates the angle of the irradiation range of each LED lamp so as to correspond to the actual irradiation range, using the input deviation amount as the correction amount. The irradiation control unit 5 turns off the LED lamps in the irradiation range (light shielding range) corresponding to the vehicle, and turns on the other LED lamps.
補正前は車両を照射していたＬＥＤランプは補正後には消灯される。補正前は車両がないにもかかわらず消灯していたＬＥＤランプが補正後には点灯される。例えば、車両が１１度〜１２度にあることが検出されたとき、照射範囲のずれがない場合、ＬＥＤランプ１が消灯される。しかし、照射範囲のずれがあるので、実際はＬＥＤランプ１は１３度〜１８度を照射する。５度〜１０度を照射範囲とするＬＥＤランプ２は点灯するが、実際は８度〜１３度を照射して、車両を照射する。ここで、各ＬＥＤランプの照射範囲を補正量に応じて補正することにより、ＬＥＤランプ２の照射範囲が８度〜１３度となり、検出された車両に対応して、ＬＥＤランプ２は消灯する。ＬＥＤランプ１の照射範囲は１３度〜１８度になるので、ＬＥＤランプ１は点灯する。 The LED lamp that has illuminated the vehicle before the correction is turned off after the correction. The LED lamp which has been turned off despite the absence of the vehicle before the correction is turned on after the correction. For example, when it is detected that the vehicle is at 11 degrees to 12 degrees, the LED lamp 1 is turned off if there is no deviation of the irradiation range. However, since there is a shift in the irradiation range, the LED lamp 1 actually irradiates 13 degrees to 18 degrees. Although the LED lamp 2 whose illumination range is 5 degrees to 10 degrees is turned on, the vehicle is actually irradiated by irradiating 8 degrees to 13 degrees. Here, by correcting the irradiation range of each LED lamp according to the correction amount, the irradiation range of the LED lamp 2 becomes 8 degrees to 13 degrees, and the LED lamp 2 is turned off corresponding to the detected vehicle. Since the irradiation range of the LED lamp 1 is 13 degrees to 18 degrees, the LED lamp 1 is turned on.
図４に示すように、配光可変ヘッドランプは、照射範囲がずれていて、車両を照射していたが、補正後は図８に示すように、車両に対してＬＥＤランプは照射されない。これによって、遮光範囲を絞り込むことができ、広く照射することができるので、運転者が前方を視認しやすい前照灯を実現できる。 As shown in FIG. 4, the illumination range of the light distribution variable headlamp deviates, and the vehicle is illuminated. However, as shown in FIG. 8, the LED lamp is not illuminated on the vehicle after correction. As a result, the light shielding range can be narrowed and the light can be widely irradiated, so that a headlight with which the driver can easily view the front can be realized.
ここで、照射範囲のずれは、車両工場や修理工場などで前照灯やカメラの取付、修理、点検、交換などを行ったときに、取付ばらつきがあると生じる。このとき、ずれ量の補正を行うとよい。車両の前方のスクリーンにＬＥＤランプを照射して、実際の照射範囲を検出して、ずれ量を算出して、記憶しておく。このように、ずれ量を事前に算出しておくことにより、検出された車両の位置を即座に補正でき、車両の動きに追従してＬＥＤランプの配光を制御できる。 Here, the deviation of the irradiation range occurs when there is mounting variation when mounting, repairing, checking, replacing, etc. of headlights and cameras in a vehicle plant or a repair plant. At this time, it is preferable to correct the deviation amount. The screen in front of the vehicle is illuminated with an LED lamp, the actual illumination range is detected, and the amount of deviation is calculated and stored. As described above, by calculating the amount of deviation in advance, the detected position of the vehicle can be immediately corrected, and the light distribution of the LED lamp can be controlled following the movement of the vehicle.
また、車両の走行中、常に補正を行ってもよい。図９に示すように、車両の走行中、車両検出部３が前方の車両を検出すると、照射範囲演算部４は、車両の位置に対応する照射範囲を特定する。照射制御部５は、特定された照射範囲に対応するＬＥＤランプの消灯あるいは点灯を行う。 In addition, correction may be performed at all times while the vehicle is traveling. As shown in FIG. 9, when the vehicle detection unit 3 detects a vehicle ahead while the vehicle is traveling, the irradiation range calculation unit 4 specifies an irradiation range corresponding to the position of the vehicle. The irradiation control unit 5 turns off or turns on the LED lamp corresponding to the specified irradiation range.
車両の走行に伴って、点灯していたＬＥＤランプが消灯する。動作が変化したＬＥＤランプの照射範囲では、明暗が変化する。照射範囲検出部１１は、撮影された画像から実際の照射範囲を検出する。照射範囲ずれ量演算部１２は、変化の前後の実際の照射範囲から差分を取り、ずれ量を算出する。図１０に示すように、変化の前後の画像を比べることにより、明暗の差分を取って、動作が変化したＬＥＤランプの照射範囲を特定することができる。このように、走行中に実際の照射範囲からずれ量を算出して、各ＬＥＤランプの照射範囲を補正することにより、走行中、振動などよって生じる照射範囲のずれに基づいた補正を行うことができ、精度よくＬＥＤランプの配光を制御することができる。 As the vehicle travels, the LED lamp that was on turns off. In the illumination range of the LED lamp whose operation has changed, the brightness changes. The irradiation range detection unit 11 detects an actual irradiation range from the captured image. The irradiation range shift amount calculation unit 12 calculates a shift amount by taking a difference from the actual irradiation range before and after the change. As shown in FIG. 10, by comparing the images before and after the change, the difference between light and dark can be taken to specify the irradiation range of the LED lamp whose operation has changed. In this way, by calculating the amount of deviation from the actual irradiation range during traveling and correcting the irradiation range of each LED lamp, correction based on the deviation of the irradiation range caused by vibration or the like can be performed during traveling. It is possible to control the light distribution of the LED lamp accurately.
なお、本発明は、上記実施形態に限定されるものではなく、本発明の範囲内で上記実施形態に多くの修正および変更を加え得ることは勿論である。ＬＥＤランプを消灯する代わりに、ＬＥＤランプの照射を遮光してもよい。すなわち、ＬＥＤランプからの照射を遮るシャッタが設けられ、シャッタの移動により、照射と遮光が切り替えられる。 The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be added to the above embodiment within the scope of the present invention. Instead of turning off the LED lamp, the illumination of the LED lamp may be blocked. That is, a shutter that blocks the irradiation from the LED lamp is provided, and the movement of the shutter switches the irradiation and the shielding.
また、検出された車両の位置を補正してもよい。照射範囲演算部４は、車両検出部３が検出した車両の位置を算出されたずれ量に応じて補正する。例えば、車両が１１度〜１２度にあることが検出されたとき、補正により車両の位置は８度~９度となる。そして、補正後の車両の位置に基づいて、車両に対応する照射範囲を特定する。例えば５度〜１０度を照射範囲とするＬＥＤランプが対応し、このＬＥＤランプは消灯する。 Also, the detected position of the vehicle may be corrected. The irradiation range calculation unit 4 corrects the position of the vehicle detected by the vehicle detection unit 3 according to the calculated amount of deviation. For example, when it is detected that the vehicle is at 11 degrees to 12 degrees, the position of the vehicle becomes 8 degrees to 9 degrees by the correction. Then, based on the corrected position of the vehicle, the irradiation range corresponding to the vehicle is specified. For example, an LED lamp whose irradiation range is 5 degrees to 10 degrees corresponds, and this LED lamp turns off.
１ 前照灯
２ 照射制御装置
３ 車両検出部
４ 照射範囲演算部
５ 照射制御部
１０ ずれ検出装置
１１ 照射範囲検出部
１２ 照射範囲ずれ演算部
DESCRIPTION OF SYMBOLS 1 Headlight 2 Irradiation control apparatus 3 Vehicle detection part 4 Irradiation range calculating part 5 Irradiation control part 10 Deviation detection apparatus 11 Irradiation range detection part 12 Irradiation range deviation calculating part
Claims (1)
A front comprising a headlight composed of a plurality of lamps for irradiating successive individual ranges, and an irradiation control device for controlling the operation of each lamp according to the position of the vehicle ahead detected by the vehicle detection unit The illumination control device is provided with a shift detection device that calculates a shift between the actual irradiation range of each lamp detected by the vehicle detection unit and the reference irradiation range, and the irradiation control device responds to the shift of the irradiation range. A headlamp control apparatus characterized by changing a lamp to be operated.
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| JP2017189547A JP2019064348A (en) | 2017-09-29 | 2017-09-29 | Headlight control device |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017189547A JP2019064348A (en) | 2017-09-29 | 2017-09-29 | Headlight control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2019064348A true JP2019064348A (en) | 2019-04-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020250711A1 (en) * | 2019-06-12 | 2020-12-17 | ||
| CN112109628A (en) * | 2019-06-20 | 2020-12-22 | 现代摩比斯株式会社 | Apparatus and method for controlling intelligent headlamp |
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2017
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020250711A1 (en) * | 2019-06-12 | 2020-12-17 | ||
| WO2020250711A1 (en) * | 2019-06-12 | 2020-12-17 | 日立オートモティブシステムズ株式会社 | Onboard system, onboard device |
| US20220314866A1 (en) * | 2019-06-12 | 2022-10-06 | Hitachi Astemo, Ltd. | In-vehicle system and in-vehicle device |
| JP7231730B2 (en) | 2019-06-12 | 2023-03-01 | 日立Astemo株式会社 | In-vehicle system, in-vehicle device |
| US11845377B2 (en) | 2019-06-12 | 2023-12-19 | Hitachi Astemo, Ltd. | In-vehicle system and in-vehicle device |
| CN112109628A (en) * | 2019-06-20 | 2020-12-22 | 现代摩比斯株式会社 | Apparatus and method for controlling intelligent headlamp |
| CN112109628B (en) * | 2019-06-20 | 2023-06-27 | 现代摩比斯株式会社 | Device and method for controlling intelligent head lamp |
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