JP2012224286A - Occupant state sensor - Google Patents

Occupant state sensor Download PDF

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JP2012224286A
JP2012224286A JP2011095475A JP2011095475A JP2012224286A JP 2012224286 A JP2012224286 A JP 2012224286A JP 2011095475 A JP2011095475 A JP 2011095475A JP 2011095475 A JP2011095475 A JP 2011095475A JP 2012224286 A JP2012224286 A JP 2012224286A
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vehicle
detection unit
visual state
head position
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JP6008417B2 (en
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Kazuhiko Yamaguchi
和彦 山口
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Isuzu Motors Ltd
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PROBLEM TO BE SOLVED: To improve safety performance of a vehicle while taking cost phase and layout phase into consideration.SOLUTION: A first in-car CCD camera 6 is fixedly disposed on a front part in the vehicle interior, captures an image of at least the head of a driver who has sat on a driver's seat in the vehicle interior from the direct front and outputs image data thereof as a first captured image signal. A second in-car CCD camera 7 is fixedly disposed on a front part in the vehicle interior, captures an image of at least the upper half part of the driver's body from the diagonal front and outputs image data thereof as a second captured image signal. A sitting position sensing unit 8 senses the sitting position of the driver based on the first captured image signal and the second captured image signal. A head position sensing unit 9 senses the head position of the driver based on the first captured image signal and the second captured image signal. A visual state sensing unit 19 senses a visual state of the driver based on the first captured image signal.

Description

本発明は、車両に搭載する乗員状態検知装置に関する。   The present invention relates to an occupant state detection device mounted on a vehicle.

従来、車両の座席に着座する乗員の状態を検知する装置として、着座位置検知装置、頭部位置検知装置、及び視覚状態検知装置等が存在する。これらは、それぞれ別の装置として考えられている。   Conventionally, as a device for detecting the state of an occupant seated in a vehicle seat, a seating position detection device, a head position detection device, a visual state detection device, and the like exist. Each of these is considered as a separate device.

着座位置検知装置は、シートポジションセンサ及び荷重センサ等を備え、乗員の着座位置（前後方向、左右方向、姿勢）を検知する。この着座検知装置は、例えばエアバッグ装置に採用され、エアバッグを膨張させるインフレータの点火タイミングを調整する（例えば、特許文献１参照）。これによれば、的確なタイミングでエアバッグを膨張させることができる。なお、このようなエアバッグ装置は、スマートエアバッグと呼ばれている。   The seating position detection device includes a seat position sensor, a load sensor, and the like, and detects the seating position (front-rear direction, left-right direction, posture) of the occupant. This seating detection device is employed in an airbag device, for example, and adjusts the ignition timing of an inflator that inflates the airbag (see, for example, Patent Document 1). According to this, the airbag can be inflated at an accurate timing. Such an airbag device is called a smart airbag.

頭部位置検知装置は、ＣＣＤカメラを備え、乗員の頭部位置を検知する。この頭部位置検知装置は、例えば死角を作るピラー（窓枠）に外界の映像を表示して擬似的にピラーを透視させる装置に採用されている。この装置では、頭部の位置に応じて、ピラーに表示する映像を変化させる（例えば、特許文献２参照）。これによれば、乗員に違和感のない表示を行える。   The head position detection device includes a CCD camera and detects the head position of an occupant. This head position detection device is employed, for example, in a device that displays an image of the outside world on a pillar (window frame) that creates a blind spot and pseudo-sees through the pillar. In this apparatus, the image displayed on the pillar is changed according to the position of the head (see, for example, Patent Document 2). According to this, a display without a sense of incongruity to the passenger can be performed.

視覚状態検知装置は、赤外線カメラを備え、乗員の視覚状態（顔の向き、瞬目、視線）を検知する（例えば、特許文献３参照）。これによれば、ブザーやランプ等の何らかの手段をもって警告を行うことでよそ見を防止したり、覚醒度を判断して休憩を促したりできる。   The visual state detection device includes an infrared camera and detects the visual state (face orientation, blink, line of sight) of the occupant (see, for example, Patent Document 3). According to this, it is possible to prevent looking away by giving a warning by some means such as a buzzer or a lamp, or to prompt a break by judging the arousal level.

特開２００２−０８７２０１号公報JP 2002-087201 A 特開２００８−０３７１１８号公報JP 2008-037118 A 特開２００６−３０８３７５号公報JP 2006-308375 A

しかし、上記従来の複数の装置を全て車両に搭載する際に、多数のセンサ及びカメラを車室内に装備させることは、コスト面及びレイアウト面から好ましくない。   However, when all of the conventional devices are mounted on a vehicle, it is not preferable from the viewpoint of cost and layout to install a large number of sensors and cameras in the vehicle interior.

また、各装置が個別に取得した情報から検知を行うので、得られる検知結果に関連性がなく、信頼性の高い制御、すなわち車両の高い安全性能を実現することが期待できない。   Moreover, since each apparatus detects from the information acquired individually, the detection result obtained is not related, and it cannot be expected to realize highly reliable control, that is, high safety performance of the vehicle.

そこで、本発明は、コスト面及びレイアウト面を考慮しつつ、車両の安全性能を向上させることが可能な乗員状態検知装置の提供を目的とする。   Accordingly, an object of the present invention is to provide an occupant state detection device capable of improving the safety performance of a vehicle while considering cost and layout.

上記目的を達成すべく、本発明に係る乗員状態検知装置は、車両に搭載される乗員状態検知装置であって、第１の撮像手段と、第２の撮像手段と、着座位置検知手段と、頭部位置検知手段と、視覚状態検知手段検知手段とを備える。   In order to achieve the above object, an occupant state detection device according to the present invention is an occupant state detection device mounted on a vehicle, and includes a first imaging unit, a second imaging unit, a seating position detection unit, Head position detecting means and visual state detecting means detecting means are provided.

第１の撮像手段は、車両の車室内の前部に固定的に設けられ、車室内の運転席に着座した運転者の少なくとも頭部を正面前方から撮像し、その画像データを第１撮像信号として出力する。第２の撮像手段は、車室内の前部に固定的に設けられ、運転者の少なくとも上半身を斜め前方から撮像し、その画像データを第２撮像信号として出力する。着座位置検知手段は、運転者の着座位置を、第１撮像信号と第２撮像信号とに基づいて検知する。頭部位置検知手段は、運転者の頭部位置を、第１撮像信号と第２撮像信号とに基づいて検知する。視覚状態検知手段は、運転者の視覚状態を、第１撮像信号に基づいて検知する。   The first imaging means is fixedly provided at the front part of the passenger compartment of the vehicle, images at least the head of the driver seated in the driver's seat in the passenger compartment from the front front, and the image data is the first imaging signal. Output as. The second imaging means is fixedly provided at the front of the vehicle interior, images at least the upper body of the driver from an oblique front, and outputs the image data as a second imaging signal. The seating position detection means detects the seating position of the driver based on the first imaging signal and the second imaging signal. The head position detecting means detects the driver's head position based on the first imaging signal and the second imaging signal. The visual state detection means detects the visual state of the driver based on the first imaging signal.

上記構成では、乗員の着座位置、頭部位置及び視覚状態を、２個の撮像手段からの撮像信号のみによってそれぞれ検知することができる。従って、それぞれの検知を別の装置で実現し、多数のセンサ及びカメラを用いる場合に比べて、コストが低減し、レイアウト面でも有利である。   In the above configuration, the seating position, the head position, and the visual state of the occupant can be detected only by the imaging signals from the two imaging units. Therefore, the cost is reduced and the layout is advantageous as compared with the case where each detection is realized by a separate device and a large number of sensors and cameras are used.

また、着座位置検知手段、頭部位置検知手段及び視覚状態検知手段は、共通の撮像手段から出力された撮像信号に基づいて、着座位置、頭部位置及び視覚状態をそれぞれ検知するので、各検知結果に関連性が生じる。従って、信頼性の高い制御、すなわち車両の高い安全性能を実現することができる。例えば、エアバッグ装置に採用した場合、インフレータの点火タイミングを、乗員の着座位置だけでなく、乗員の頭部位置に基づいて、より細かく制御することができる。また、乗員の視覚状態に基づいて、エアバッグ及び顔面の接触面積を考慮した制御を行うことができる。   The sitting position detecting means, the head position detecting means, and the visual state detecting means detect the seating position, the head position, and the visual state based on the imaging signal output from the common imaging means. There is relevance to the results. Therefore, highly reliable control, that is, high safety performance of the vehicle can be realized. For example, when employed in an airbag device, the ignition timing of the inflator can be more finely controlled based on not only the seating position of the occupant but also the head position of the occupant. Further, it is possible to perform control in consideration of the contact area between the airbag and the face based on the visual state of the occupant.

本発明によれば、コスト面及びレイアウト面を考慮しつつ、車両の安全性能を向上させることができる。   According to the present invention, the safety performance of a vehicle can be improved while considering the cost and layout.

本発明に係る乗員状態検知装置を備えた車両の模式図である。It is a schematic diagram of a vehicle provided with an occupant state detection device according to the present invention. 乗員状態検知装置のブロック構成図である。It is a block block diagram of a passenger | crew state detection apparatus.

以下、本発明の一実施形態を、図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１及び図２に示すように、本実施形態に係る車両１は、乗員状態検知装置２と、エアバッグ装置３と、外界表示装置４と、居眠り警報装置５とを備えている。   As shown in FIGS. 1 and 2, the vehicle 1 according to this embodiment includes an occupant state detection device 2, an airbag device 3, an external display device 4, and a dozing alarm device 5.

乗員状態検知装置２は、車室１０内の運転席１１に着座した運転者の少なくとも頭部を正面前方から撮像し、その画像データを第１撮像信号として出力する第１の車室内ＣＣＤカメラ６と、運転席１１に着座した運転者の少なくとも上半身を斜め前方から撮像し、その画像データを第２撮像信号として出力する第２の車室内ＣＣＤカメラ７と、着座位置検知ユニット（着座位置検知手段）８と、頭部位置検知ユニット（頭部位置検知手段）９と、視覚状態検知ユニット（視覚状態検知手段）１０とを備えている。   The occupant state detection device 2 images at least a head of a driver seated in a driver's seat 11 in the passenger compartment 10 from the front front, and outputs the image data as a first imaging signal. A second in-vehicle CCD camera 7 that images at least the upper body of the driver seated in the driver's seat 11 obliquely from the front and outputs the image data as a second imaging signal, and a seating position detection unit (sitting position detection means) ) 8, a head position detection unit (head position detection means) 9, and a visual state detection unit (visual state detection means) 10.

第１の車室内ＣＣＤカメラ６は、車室１０内の前部（例えば、ダッシュボード１２）の運転席１１の正面に、固定的に設けられている。第１の車室内ＣＣＤカメラ６は、通信ケーブル（図示省略）によって、着座位置検知ユニット８、頭部位置検知ユニット９及び視覚状態検知ユニット１０に接続されており、これら各ユニット８〜１０に第１撮像信号を出力する。   The first vehicle interior CCD camera 6 is fixedly provided in front of the driver's seat 11 in the front portion (for example, the dashboard 12) in the vehicle interior 10. The first in-vehicle CCD camera 6 is connected to a sitting position detection unit 8, a head position detection unit 9, and a visual state detection unit 10 by a communication cable (not shown). One imaging signal is output.

第２の車室内ＣＣＤカメラ７は、車室１０内の前部（例えば、ダッシュボード１２）の運転席１１の斜め前方に、固定的に設けられている。第２の車室内ＣＣＤカメラ７は、通信ケーブル（図示省略）によって、着座位置検知ユニット８、頭部位置検知ユニット９及び視覚状態検知ユニット１０に接続されており、これら各ユニット８〜１０に第２撮像信号を出力する。   The second vehicle interior CCD camera 7 is fixedly provided in front of the driver's seat 11 in the front portion (for example, the dashboard 12) in the vehicle interior 10 obliquely. The second vehicle interior CCD camera 7 is connected to a seating position detection unit 8, a head position detection unit 9, and a visual state detection unit 10 by a communication cable (not shown). 2 Output an image signal.

着座位置検知ユニット８と頭部位置検知ユニット９と視覚状態検知ユニット１０とは、ＥＣＵ：Electric Control Unit）によって構成され、ＥＣＵは、ＣＰＵ（Central Processing Unit）と、ＲＯＭ（Read Only Memory）と、ＲＡＭ（Random Access Memory）とを備える。   The sitting position detection unit 8, the head position detection unit 9, and the visual state detection unit 10 are configured by an ECU (Electric Control Unit), and the ECU includes a CPU (Central Processing Unit), a ROM (Read Only Memory), RAM (Random Access Memory).

着座位置検知ユニット８は、通信ケーブル（図示省略）によって、第１及び第２の車室内ＣＣＤカメラ６，７に接続されており、これら第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号が入力される。この着座位置検知ユニット８は、第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号に基づいて、運転者の着座位置（前後方向、左右方向、姿勢）を検知する。具体的に、運転者の前後方向の着座位置は、第１及び第２の車室内ＣＣＤカメラ６，７の映像間差分から算出される。運転者の左右方向の着座位置は、第１のＣＣＤカメラ６の映像から算出される。運転者の姿勢は、第１及び第２の車室内ＣＣＤカメラ６，７の映像及び映像間差分から算出される。   The seating position detection unit 8 is connected to the first and second in-vehicle CCD cameras 6 and 7 by communication cables (not shown). An imaging signal is input. The seating position detection unit 8 detects the seating position (front-rear direction, left-right direction, posture) of the driver based on the imaging signals from the first and second in-vehicle CCD cameras 6, 7. Specifically, the seating position of the driver in the front-rear direction is calculated from the difference between the images of the first and second in-vehicle CCD cameras 6 and 7. The seating position of the driver in the left-right direction is calculated from the image of the first CCD camera 6. The driver's posture is calculated from the images of the first and second in-vehicle CCD cameras 6 and 7 and the difference between the images.

着座位置検知ユニット８は、通信ケーブル（図示省略）によって、エアバッグ装置３及び居眠り警報装置５に接続されている。この着座位置検知ユニット８は、運転者の着座位置の検知結果を、検知信号として各装置３，５に出力する。   The sitting position detection unit 8 is connected to the airbag device 3 and the dozing alarm device 5 by a communication cable (not shown). The seating position detection unit 8 outputs the detection result of the driver's seating position to each of the devices 3 and 5 as a detection signal.

頭部位置検知ユニット９は、通信ケーブル（図示省略）によって、第１及び第２の車室内ＣＣＤカメラ６，７に接続されており、これら第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号が入力される。この頭部位置検知ユニット９は、第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号に基づいて、運転者の頭部位置を検知する。具体的に、運転者の頭部位置は、第１及び第２の車室内ＣＣＤカメラ６，７の映像及び映像間差分から算出される。   The head position detection unit 9 is connected to the first and second in-vehicle CCD cameras 6 and 7 by communication cables (not shown). The imaging signal is input. The head position detection unit 9 detects the driver's head position based on the imaging signals from the first and second in-vehicle CCD cameras 6 and 7. Specifically, the driver's head position is calculated from the images of the first and second in-vehicle CCD cameras 6 and 7 and the difference between the images.

頭部位置検知ユニット９は、通信ケーブル（図示省略）によって、エアバッグ装置３及び外界表示装置４に接続されている。この頭部位置検知ユニット９は、運転者の頭部位置の検知結果を、検知信号として各装置３，４に出力する。   The head position detection unit 9 is connected to the airbag device 3 and the external display device 4 by a communication cable (not shown). The head position detection unit 9 outputs the detection result of the driver's head position to each of the devices 3 and 4 as a detection signal.

視覚状態検知ユニット１０は、通信ケーブル（図示省略）によって、第１及び第２の車室内ＣＣＤカメラ６，７に接続されており、これら第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号が入力される。この視覚状態検知ユニット１０は、第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号に基づいて、運転者の視覚状態（顔の向き、瞬目、視線）を検知する。具体的に、運転者の顔の向き、瞬目及び視線は、共に、第１の車室内ＣＣＤカメラ６の映像から算出される。   The visual state detection unit 10 is connected to the first and second in-vehicle CCD cameras 6 and 7 by communication cables (not shown), and is connected to the first and second in-vehicle CCD cameras 6 and 7. An imaging signal is input. The visual state detection unit 10 detects the visual state of the driver (face orientation, blink, and line of sight) based on the imaging signals from the first and second in-vehicle CCD cameras 6 and 7. Specifically, the direction of the driver's face, the blink and the line of sight are all calculated from the image of the first in-vehicle CCD camera 6.

視覚状態検知ユニット１０は、通信ケーブル（図示省略）によって、エアバッグ装置３及び居眠り警報装置５に接続されている。この視覚状態検知ユニット１０は、運転者の視覚状態の検知結果を、検知信号として各装置３，５に出力する。   The visual state detection unit 10 is connected to the airbag device 3 and the dozing alarm device 5 by a communication cable (not shown). The visual state detection unit 10 outputs the detection result of the driver's visual state to each of the devices 3 and 5 as a detection signal.

このように、着座位置検知ユニット８、頭部位置検知ユニット９、及び視覚状態検知ユニット１０は、運転者の着座位置、頭部位置及び視覚状態を、共通の撮像信号からそれぞれ検知する。   Thus, the seating position detection unit 8, the head position detection unit 9, and the visual state detection unit 10 detect the driver's seating position, head position, and visual state from the common imaging signals, respectively.

エアバッグ装置３は、通信ケーブル（図示省略）によって、着座位置検知ユニット８、頭部位置検知ユニット９及び視覚状態検知ユニット１０に接続されており、これら各ユニット８〜１０からの検知信号が入力される。このエアバッグ装置３は、エアバッグと、ガスが充填されたインフレータと、車両１の衝突による衝撃を検知するセンサと、装置全体を統括的に制御するＥＣＵとを備えている（いずれも図示省略）。エアバッグ装置３は、センサで衝撃を検知すると、着座位置検知ユニット８、頭部位置検知ユニット９及び視覚状態検知ユニット１０からの検知信号に基づいてタイミングを調整しつつ、インフレータの点火を行ってエアバッグを膨張させる。   The airbag device 3 is connected to a sitting position detection unit 8, a head position detection unit 9, and a visual state detection unit 10 by a communication cable (not shown), and detection signals from these units 8 to 10 are input. Is done. The airbag device 3 includes an airbag, an inflator filled with gas, a sensor that detects an impact caused by a collision of the vehicle 1, and an ECU that comprehensively controls the entire device (all not shown). ). When the airbag device 3 detects an impact with the sensor, the airbag device 3 adjusts the timing based on detection signals from the sitting position detection unit 8, the head position detection unit 9, and the visual state detection unit 10, and ignites the inflator. Inflate the airbag.

外界表示装置４は、通信ケーブル（図示省略）によって、頭部位置検知ユニット９に接続されており、この頭部位置検知ユニット９からの検知信号が入力される。この外界表示装置４は、運転者（乗員）の死角となる外界の領域を撮像する車室外ＣＣＤカメラと、運転者の死角を形成するピラー等に配置された液晶ディスプレイと、装置全体を統括的に制御するＥＣＵとを備えている（いずれも図示省略）。外界表示装置４は、頭部位置検知ユニット９からの検知信号に基づいて映像補正処理を施してから、液晶ディスプレイに外界の映像を表示する。   The external display device 4 is connected to the head position detection unit 9 by a communication cable (not shown), and a detection signal from the head position detection unit 9 is input. This external display device 4 controls the outside of the vehicle CCD camera that captures an external area that is a blind spot of the driver (occupant), a liquid crystal display that is disposed in a pillar that forms the blind spot of the driver, and the entire apparatus. ECU (which is not shown). The external display device 4 performs an image correction process based on the detection signal from the head position detection unit 9 and then displays an external image on the liquid crystal display.

居眠り警報装置５は、通信ケーブル（図示省略）によって、着座位置検知ユニット８及び視覚状態検知ユニット１０に接続されており、これら各ユニット８，１０からの検知信号が入力される。この居眠り警報装置５は、ブザーやランプ等の報知手段と、装置全体を統括的に制御するＥＣＵとを備えている（いずれも図示省略）。居眠り警報装置５は、着座位置検知ユニット８及び視覚状態検知ユニット１０からの検知信号に基づいて報知手段を動作させる。   The dozing alarm device 5 is connected to a sitting position detection unit 8 and a visual state detection unit 10 by a communication cable (not shown), and detection signals from these units 8 and 10 are input. This dozing alarm device 5 includes notifying means such as a buzzer and a lamp, and an ECU that controls the entire device (not shown). The dozing alarm device 5 operates the notification means based on detection signals from the sitting position detection unit 8 and the visual state detection unit 10.

本実施形態によれば、着座位置検知ユニット８、頭部位置検知ユニット９及び視覚状態検知ユニット１０は、第１及び第２の車室内ＣＣＤカメラ６，７からの撮像信号に基づいて、運転者の着座位置、頭部位置、及び視覚状態を検知する。すなわち、運転者の着座位置、頭部位置、及び視覚状態の検知を、２個のＣＣＤカメラからの撮像信号のみで実現できるため、それぞれの検知を別の装置で実現し、多数のセンサ及びカメラを用いる場合に比べて、コストが下がり、レイアウト面でも有利である。また、運転者の着座位置、頭部位置、及び視覚状態の各検知結果に関連性があり、信頼性の高い制御、すなわち車両１の高い安全性能を実現することができる。例えば、エアバッグ装置３におけるインフレータ（図示省略）の点火タイミングを、運転者の着座位置だけでなく、運転者の頭部位置に基づいて、より細かく制御することができる。また、運転者の視覚状態に基づいて、エアバッグ（図示省略）及び顔面の接触面積を考慮した制御を行うことができる。   According to the present embodiment, the sitting position detection unit 8, the head position detection unit 9, and the visual state detection unit 10 are based on the imaging signals from the first and second in-vehicle CCD cameras 6 and 7, and the driver The seating position, the head position, and the visual state are detected. That is, since the detection of the driver's seating position, head position, and visual state can be realized with only the imaging signals from the two CCD cameras, each detection is realized by separate devices, and a large number of sensors and cameras Compared with the case of using, the cost is reduced and the layout is advantageous. Moreover, each detection result of a driver | operator's seating position, a head position, and a visual state is relevant, and reliable control, ie, the high safety performance of the vehicle 1, is realizable. For example, the ignition timing of an inflator (not shown) in the airbag device 3 can be controlled more finely based on not only the driver's seating position but also the driver's head position. Further, based on the visual state of the driver, it is possible to perform control in consideration of the contact area between the airbag (not shown) and the face.

なお、本実施形態では、乗員状態検知装置２の検知結果を利用して、エアバッグ装置３、外界表示装置４及び居眠り警報装置５の動作を制御したが、これらの装置３〜５の動作を制御することに限定されず、乗員状態検知装置２の検知結果を利用できる装置であれば、どのような装置の動作を制御してもよい。   In the present embodiment, the detection results of the occupant state detection device 2 are used to control the operations of the airbag device 3, the external display device 4, and the dozing alarm device 5, but the operations of these devices 3 to 5 are controlled. The operation of any device may be controlled as long as the detection result of the occupant state detection device 2 can be used.

以上、本発明者によってなされた発明を適用した実施形態について説明したが、この実施形態による本発明の開示の一部をなす論述及び図面により本発明は限定されることはない。すなわち、この実施形態に基づいて当業者等によりなされる他の実施形態、実施例及び運用技術等は全て本発明の範疇に含まれることは勿論であることを付け加えておく。   As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

１ 車両
２ 乗員状態検知装置
６ 第１の車室内ＣＣＤカメラ（第１の撮像手段）
７ 第２の車室内ＣＣＤカメラ（第２の撮像手段）
８ 着座位置検知ユニット（検知手段）
９ 頭部位置検知ユニット（検知手段）
１０ 視覚状態検知ユニット（検知手段） DESCRIPTION OF SYMBOLS 1 Vehicle 2 Occupant state detection apparatus 6 1st vehicle interior CCD camera (1st imaging means)
7 Second CCD camera in the vehicle (second imaging means)
8 Seating position detection unit (detection means)
9 Head position detection unit (detection means)
10 Visual state detection unit (detection means)

Claims (1)

車両に搭載される乗員状態検知装置であって、
前記車両の車室内の前部に固定的に設けられ、前記車室内の運転席に着座した運転者の少なくとも頭部を正面前方から撮像し、その画像データを第１撮像信号として出力する第１の撮像手段と、
前記車室内の前部に固定的に設けられ、前記運転者の少なくとも上半身を斜め前方から撮像し、その画像データを第２撮像信号として出力する第２の撮像手段と、
前記運転者の着座位置を、前記第１撮像信号と前記第２撮像信号とに基づいて検知する着座位置検知手段と、
前記運転者の頭部位置を、前記第１撮像信号と前記第２撮像信号とに基づいて検知する頭部位置検知手段と、
前記運転者の視覚状態を、前記第１撮像信号に基づいて検知する視覚状態検知手段と、を備えた
ことを特徴とする乗員状態検知装置。 An occupant state detection device mounted on a vehicle,
A first fixed image is provided at a front portion of the vehicle interior of the vehicle, images at least a head of a driver seated in a driver seat in the vehicle interior from the front front, and outputs the image data as a first imaging signal. Imaging means,
A second imaging means that is fixedly provided at a front portion of the passenger compartment, images at least the upper body of the driver from an oblique front, and outputs the image data as a second imaging signal;
A seating position detecting means for detecting the seating position of the driver based on the first imaging signal and the second imaging signal;
Head position detection means for detecting the driver's head position based on the first imaging signal and the second imaging signal;
An occupant state detection device comprising: visual state detection means for detecting the visual state of the driver based on the first imaging signal.
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