JP2009176112A - Visual line detection apparatus for crew - Google Patents

Visual line detection apparatus for crew Download PDF

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Publication number
JP2009176112A
JP2009176112A JP2008014969A JP2008014969A JP2009176112A JP 2009176112 A JP2009176112 A JP 2009176112A JP 2008014969 A JP2008014969 A JP 2008014969A JP 2008014969 A JP2008014969 A JP 2008014969A JP 2009176112 A JP2009176112 A JP 2009176112A
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JP
Japan
Prior art keywords
occupant
line
range
vehicle
driver
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Pending
Application number
JP2008014969A
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Japanese (ja)
Inventor
Kenichi Ikeda
健一 池田
Original Assignee
Mazda Motor Corp
マツダ株式会社
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Publication date
Application filed by Mazda Motor Corp, マツダ株式会社 filed Critical Mazda Motor Corp
Priority to JP2008014969A priority Critical patent/JP2009176112A/en
Publication of JP2009176112A publication Critical patent/JP2009176112A/en
Pending legal-status Critical Current

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Abstract

In an occupant's line-of-sight detection device that operates an alarm means when the line of sight of a vehicle occupant is out of a predetermined range, the alarm means is appropriately operated.
An occupant's line-of-sight detection device 1 detects a line of sight of a driver of a vehicle, and a driver's line of sight detected by the line-of-sight detection unit 11 faces out of a safe visual range. The armpit warning control unit 13 that activates the alarm device 30 and the range changing unit 16 that changes the width of the safety visual recognition range based on at least one of the characteristics of the driver and the driving state of the vehicle are provided.
[Selection] Figure 1

Description

  The present invention relates to an occupant's line-of-sight detection device.

  Conventionally, a line-of-sight detection device for detecting the line of sight of a vehicle occupant is known.

  In Patent Document 1, when the driver visually observes an object that may contact or collide with the host vehicle, a predetermined image is displayed based on the detected driver's line of sight or the like. It is projected onto the retina of the driver so as to be superimposed on the vicinity. As a result, the driver can accurately recognize the object.

In addition, when the detected driver's line of sight has been out of the predetermined range, it is assumed that the driver is looking aside, so that a warning means is activated to notify the driver to that effect. What is made is known.
JP 2006-327527 A

  By the way, the size of the visual field range of the driver varies depending on the individual, and changes depending on the driving situation of the vehicle. For this reason, if the predetermined range is not set to an appropriate size, the alarm means does not move or the driver is not looking aside even though the driver is looking away. Means may be activated.

  The present invention has been made in view of the above points, and the object of the present invention is to provide an occupant's line-of-sight detection device that operates an alarm means when the line of sight of an occupant of a vehicle faces outside a predetermined range. It is to operate the alarm means appropriately.

  According to a first aspect of the present invention, there is provided line-of-sight detection means for detecting the line of sight of an occupant of a vehicle, and armpit warning control means for activating the alarm means when the line of sight of the occupant detected by the line of sight detection means is outside a predetermined range. And a range change means for changing the width of the predetermined range based on at least one of the characteristics of the occupant and the driving state of the vehicle. It is characterized by.

  As a result, the range changing means changes the width of the predetermined range based on at least one of the characteristics of the occupant and the driving state of the vehicle, so that the predetermined range is appropriately set according to the characteristics of the occupant and the driving state of the vehicle. The alarm means can be activated appropriately.

  According to a second invention, in the first invention, the characteristics of the occupant include the physique of the occupant, and the range changing means is configured so that the range of the predetermined range is based on at least the physique of the occupant It is characterized by being comprised so that may be changed.

  Thereby, a predetermined range can be made into the appropriate width according to a crew member's physique.

  According to a third aspect, in the second aspect, the apparatus further comprises physique detection means for detecting the physique of the occupant.

  Thereby, a crew member's physique is detectable.

  A fourth invention is characterized in that, in the second or third invention, the range changing means is configured to widen the predetermined range as the occupant's physique is larger. .

  By the way, the larger the occupant's physique, the wider the field of view of the occupant.

  Here, according to the present invention, the predetermined range is widened by the range changing means as the occupant's physique is larger. Therefore, the predetermined range can be further increased to an appropriate size according to the occupant's physique. it can.

  According to a fifth invention, in any one of the first to fourth inventions, the characteristic of the occupant includes the age of the occupant, and the range changing means is based on at least the age of the occupant, It is characterized by changing the width of the predetermined range.

  Thereby, a predetermined range can be made into the suitable area according to the passenger | crew's age.

  The sixth invention is characterized in that in the fifth invention, there is further provided an age estimating means for estimating the age of the occupant.

  Thereby, a passenger | crew's age can be estimated.

  A seventh invention is characterized in that, in the fifth or sixth invention, the range changing means is configured to widen the predetermined range as the age of the occupant is lower. .

  By the way, it is thought that the passenger | crew's visual field range is so wide that the passenger | crew's age is low.

  Here, according to the present invention, the range change means widens the predetermined range as the occupant's age is lower, so that the predetermined range can be further increased to an appropriate size according to the occupant's age. it can.

  In an eighth aspect based on any one of the first to seventh aspects, the driving state of the vehicle includes a traveling speed of the vehicle, and the range changing means is based on at least the traveling speed of the vehicle. Thus, the width of the predetermined range is changed.

  Thereby, a predetermined range can be made into the suitable area according to the running speed of the vehicle.

  In a ninth aspect based on the eighth aspect, the range changing means is configured to increase the predetermined range as the traveling speed of the vehicle is slower.

  By the way, it is thought that a passenger | crew's visual field range is so wide that the running speed of a vehicle is slow.

  Here, according to the present invention, the predetermined range is made wider as the vehicle traveling speed is slower by the range changing means, so that the predetermined range is made more appropriate according to the vehicle traveling speed. be able to.

  According to the present invention, since the width of the predetermined range is changed based on at least one of the characteristics of the occupant and the driving state of the vehicle, the predetermined range is set to an appropriate width corresponding to the characteristics of the occupant and the driving state of the vehicle. Therefore, the alarm means can be appropriately activated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, an occupant's line-of-sight detection device 1 mounted on a vehicle V according to an embodiment of the present invention includes an electric control unit (hereinafter referred to as ECU) 10. An inner camera 20 (see also FIGS. 2 and 3), an alarm device 30 (alarm means) such as a buzzer or LED, a vehicle speed sensor 40, and a sensitivity setting switch 50 are connected to the ECU 10 so as to be able to exchange signals. .

  The inner camera 20 is installed on the upper surface of the steering column of the vehicle V, images the face of the driver D (occupant), and outputs the image information signal to the ECU 10. The vehicle speed sensor 40 detects the traveling speed of the vehicle V and outputs a vehicle speed information signal to the ECU 10. When this is operated by the driver D, the sensitivity setting switch 50 outputs an operation information signal to the ECU 10.

  The ECU 10 includes a line-of-sight detection unit 11 (line-of-sight detection unit), a determination unit 12 (determination unit), and an armpit warning control unit 13 (armpit alarm control unit). The line-of-sight detection unit 11 detects the line of sight L (see FIG. 2) of the driver D based on image information from the inner camera 20. The determination unit 12 continues the safety line of sight A (predetermined range) set on the windshield W of the vehicle V after the line of sight L of the driver D detected by the line of sight detection unit 11 continues for a predetermined time (eg, 2 seconds). (Refer to FIG. 3) It is determined whether or not it faces outward. Here, the safe visual recognition range A is an area on the windshield W that is considered to be visible to the driver D in a normal driving state. The armpit warning control unit 13 passes the position where the line of sight L of the driver D is out of the safe visual recognition range A for a predetermined time by the determination unit 12, that is, the line of sight L of the driver D is out of the safe visual recognition range A for the predetermined time. When it is determined that the driver D is looking aside, in order to notify the driver D of the fact that the driver D is looking aside, an operation signal is output to the alarm device 30 and the alarm device 30 is activated. Yes.

  When the line of sight L of the occupant D faces the side mirror of the vehicle V, the operation of the alarm device 30 is prohibited. Further, when the direction indicator of the vehicle V is operating and the line of sight L of the driver D faces the direction indicated by the direction indicator, the line of sight L of the occupant D is outside the safe visual range A for a predetermined time. Even when facing, the operation of the alarm device 30 is prohibited.

  The ECU 10 further includes a height estimation unit 14 (physique detection unit), an age estimation unit 15 (age estimation unit), and a range change unit 16 (range change unit). The height estimation unit 14 detects the position of the head of the driver D based on the image information from the inner camera 20, and estimates the height of the driver D based on the detected position. The age estimation unit 15 estimates the age of the driver D based on image information from the inner camera 20.

  By the way, the size of the visual field range of the driver D varies from person to person, and changes depending on the driving situation of the vehicle V. That is, for example, the field-of-view range narrows as the height of the driver D becomes smaller, becomes narrower as the driver D gets older, and becomes narrower as the traveling speed of the vehicle V becomes faster. These things were obtained by conducting experiments and the like in advance. Therefore, the range changing unit 16 automatically changes and determines the width of the safe visual recognition range A based on the characteristics of the driver D and the driving state of the vehicle V. That is, the range changing unit 16 widens the safe visual recognition range A as the height of the driver D estimated by the height estimating unit 14 is higher, and the age of the driver D estimated by the age estimating unit 15 is higher. As shown, the safe visual recognition range A is widened, and based on the vehicle speed information from the vehicle speed sensor 40, the safe visual recognition range A is widened as the traveling speed of the vehicle V is low.

  In the present embodiment, the height, age, and vehicle speed of the driver D are each given a score according to the size, and the size of the safe viewing range A is corrected based on the total score obtained by adding the score. ing. That is, as shown in FIG. 4, when the height of the driver D is 180 cm or more, 100 points, when 170 to 179 cm, 80 points, when 160 to 169 cm, 60 points, and when 150 to 159 cm Forty points, 20 points if 149 cm or less. In addition, when the age of the driver D is 18-20 years old, 100 points, when the driver D is 21-30 years old, 80 points, when 31-30 years old, 60 points, and when 41-50 years old, 40 points. If you are over 51 years old, give 20 points. Furthermore, when the vehicle speed is 20 km / h or less, 100 points, when the vehicle speed is 21 to 40 km, 80 points, when the vehicle speed is 41 to 60 km, 60 points, when the vehicle speed is 61 to 80 km, 40 points, and 81 km / h or more. In case of 20 points. As shown in FIG. 5, when the total score is 253 to 300, the safe visual recognition range A is the widest pattern 1, and when 205 to 252 is the pattern 2, the pattern 2 is narrower than the pattern 1. In the case of 204 points, the pattern 3 is narrower than the pattern 2, in the case of 109 to 156 points, the pattern 4 is narrower than the pattern 3, and in the case of 60 to 108 points, the narrowest pattern 5 is set.

  As described above, the optimum safe visual recognition range A corresponding to the characteristics of the driver D and the driving state of the vehicle V is set.

  1 receives the operation information signal from the sensitivity setting switch 50, it arbitrarily changes the width of the safe visual recognition range A according to the operation information.

-Effect-
As described above, according to the present embodiment, the range changing unit 16 changes the width of the safe visual recognition range A based on the height and age of the driver D and the traveling speed of the vehicle V. Can be made to have an appropriate size according to the height and age of the driver D and the traveling speed of the vehicle V. Therefore, the alarm device 30 can be appropriately operated.

  By the way, it is thought that the visual field range of the driver D is wider as the height of the driver D is larger.

  Here, according to this embodiment, since the safe visual recognition range A is made wider as the height of the driver D is larger by the range changing unit 16, the safe visual recognition range A is further matched to the height of the driver D. Can be appropriately sized.

  By the way, it is thought that the visual field range of the driver D is wider as the age of the driver D is lower.

  Here, according to this embodiment, since the safe visual recognition range A is made wider as the age of the driver D is lower by the range changing unit 16, the safe visual recognition range A is further adapted to the age of the driver D. Can be appropriately sized.

  By the way, it is thought that the visual field range of the driver D is wider as the traveling speed of the vehicle V is slower.

  Here, according to the present embodiment, the safe visual recognition range A is increased according to the traveling speed of the vehicle V because the safe visual recognition range A is increased by the range changing unit 16 as the traveling speed of the vehicle V is slower. Can be appropriately sized.

(Other embodiments)
In the above embodiment, the width of the safe visual recognition range A is changed based on the characteristics of the driver D and the driving state of the vehicle V, but the width is changed based on one of them. You may do it. That is, the width may be changed based only on the height and / or age of the driver D, or the width may be changed based only on the vehicle speed.

  Moreover, in the said embodiment, although the width | variety of the safe visual recognition range A is changed based on the height and age of the driver | operator D, as long as it affects the breadth, driving other than those The area may be changed based on the characteristics of the person D.

  Furthermore, in the said embodiment, although the width of the safe visual recognition range A is changed based on a vehicle speed, as long as it affects the width, based on the driving state of the vehicle V other than that. The area may be changed. For example, the width may be changed based on the brightness around the vehicle V. In this case, the brighter the vehicle V is, the wider the safe viewing range A is.

  Furthermore, in the above embodiment, the height of the driver D is estimated. However, the present invention is not limited to this. For example, the height of the driver D may be directly input and set. In this case, the width of the safe visual recognition range A is changed based on the height of the driver D that is set to be input.

  In the above embodiment, the age of the driver D is estimated. However, the present invention is not limited to this. For example, the age of the driver D may be directly input and set. In this case, the width of the safe visual recognition range A is changed based on the age of the driver D that is set to be input.

  Furthermore, in the above-described embodiment, the height, age, and vehicle speed of the driver D are each given a score according to the size thereof, and based on the total score obtained by adding them, the width of the safe visual recognition range A is divided into five levels. However, the present invention is not limited to this. For example, as the total score is larger, the safety visual recognition range A may be linearly widened, and the height, age, and vehicle speed itself of the driver D are numerical values. Based on the above, the safe visual recognition range A may be widened.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is defined by the claims, and is not limited by the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the occupant's line-of-sight detection device according to the present invention can be applied to uses for appropriately operating alarm means.

1 is a block diagram of an occupant's line-of-sight detection device according to an embodiment of the present invention. 1 is a schematic side view of a vehicle on which an occupant's line-of-sight detection device is mounted. It is the schematic which looked at the windshield in which the safe visual recognition range was set from the vehicle interior. It is a figure which shows the relationship between a driver | operator's height, age, and a vehicle speed, and a score. It is a figure which shows the relationship between a total score and the width of a safe visual recognition range.

Explanation of symbols

1 Crew Detection Device 10 ECU
11 Gaze Detection Unit (Gaze Detection Unit)
12 judgment part 13 armpit warning control part (armpit alarm control means)
14 Height estimation means (physique detection means)
15 Age estimation part (age estimation means)
16 Range changing part (Range changing means)
20 Inner camera 30 Alarm device (alarm means)
40 Vehicle speed sensor A Safety visibility range (predetermined range)
D Driver (occupant)
L Line of sight V Vehicle W Windshield

Claims (9)

  1. An occupant comprising line-of-sight detection means for detecting the line of sight of an occupant of the vehicle, and an armpit warning control means for operating the alarm means when the line of sight of the occupant detected by the line-of-sight detection means is outside a predetermined range The gaze detection device of
    The occupant's line-of-sight detection device further comprising range changing means for changing the width of the predetermined range based on at least one of the characteristics of the occupant and the driving state of the vehicle.
  2. The occupant's line-of-sight detection device according to claim 1,
    The characteristics of the occupant include the physique of the occupant,
    The range change means is configured to change the width of the predetermined range based at least on the physique of the occupant.
  3. The occupant's line-of-sight detection device according to claim 2,
    The occupant's line-of-sight detection device further comprising physique detection means for detecting the physique of the occupant.
  4. In the occupant's gaze detection device according to claim 2 or 3,
    The said range change means is comprised so that the said predetermined range may be widened, so that the said passenger | crew's physique is large, The passenger | crew's gaze detection apparatus characterized by the above-mentioned.
  5. In the occupant's gaze detection device according to any one of claims 1 to 4,
    The characteristics of the occupant include the age of the occupant,
    The occupant's line-of-sight detection device, wherein the range changing means is configured to change the width of the predetermined range based on at least the age of the occupant.
  6. The occupant's line-of-sight detection device according to claim 5,
    An occupant's line-of-sight detection device further comprising age estimation means for estimating the occupant's age.
  7. In the occupant's gaze detection device according to claim 5 or 6,
    The said range change means is comprised so that the said predetermined range may be widened, so that the said passenger | crew's age is low, The passenger | crew's gaze detection apparatus characterized by the above-mentioned.
  8. In the occupant's gaze detection device according to any one of claims 1 to 7,
    The driving state of the vehicle includes the traveling speed of the vehicle,
    The occupant's line-of-sight detection device, wherein the range changing means is configured to change the width of the predetermined range based on at least the traveling speed of the vehicle.
  9. The occupant's line-of-sight detection device according to claim 8,
    The said range change means is comprised so that the said predetermined range may be widened, so that the running speed of the said vehicle is slow, The passenger | crew's gaze detection apparatus characterized by the above-mentioned.
JP2008014969A 2008-01-25 2008-01-25 Visual line detection apparatus for crew Pending JP2009176112A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012022504A (en) * 2010-07-14 2012-02-02 Honda Motor Co Ltd Inattentive driving determination device
JP2013056633A (en) * 2011-09-09 2013-03-28 Honda Motor Co Ltd Head-up display device
US9041543B2 (en) 2012-02-09 2015-05-26 Denso Corporation Inattentive state determination apparatus and method of determining inattentive state
JP2015202842A (en) * 2014-04-16 2015-11-16 株式会社デンソー Head-up display device
US20160171319A1 (en) * 2013-05-21 2016-06-16 Denso Corporation Driver check apparatus
US10525981B2 (en) 2017-01-17 2020-01-07 Toyota Jidosha Kabushiki Kaisha Driver condition detection system
US10604160B2 (en) 2017-01-18 2020-03-31 Toyota Jidosha Kabushiki Kaisha Driver condition detection system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012022504A (en) * 2010-07-14 2012-02-02 Honda Motor Co Ltd Inattentive driving determination device
JP2013056633A (en) * 2011-09-09 2013-03-28 Honda Motor Co Ltd Head-up display device
US9041543B2 (en) 2012-02-09 2015-05-26 Denso Corporation Inattentive state determination apparatus and method of determining inattentive state
US20160171319A1 (en) * 2013-05-21 2016-06-16 Denso Corporation Driver check apparatus
US9767374B2 (en) * 2013-05-21 2017-09-19 Denso Corporation Driver check apparatus
JP2015202842A (en) * 2014-04-16 2015-11-16 株式会社デンソー Head-up display device
US10525981B2 (en) 2017-01-17 2020-01-07 Toyota Jidosha Kabushiki Kaisha Driver condition detection system
US10604160B2 (en) 2017-01-18 2020-03-31 Toyota Jidosha Kabushiki Kaisha Driver condition detection system

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