GB2385451A - Monitoring drowsiness - Google Patents

Monitoring drowsiness Download PDF

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Publication number
GB2385451A
GB2385451A GB0203392A GB0203392A GB2385451A GB 2385451 A GB2385451 A GB 2385451A GB 0203392 A GB0203392 A GB 0203392A GB 0203392 A GB0203392 A GB 0203392A GB 2385451 A GB2385451 A GB 2385451A
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GB
United Kingdom
Prior art keywords
warning device
appropriate
memory chip
warning
user
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.)
Withdrawn
Application number
GB0203392A
Other versions
GB0203392D0 (en
Inventor
John Franks Webb Sweet
Clive Bond
Andrew Gilbert Saunders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Loadpoint Ltd
Original Assignee
Loadpoint Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Loadpoint Ltd filed Critical Loadpoint Ltd
Priority to GB0203392A priority Critical patent/GB2385451A/en
Publication of GB0203392D0 publication Critical patent/GB0203392D0/en
Publication of GB2385451A publication Critical patent/GB2385451A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
    • B60K28/06—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
    • B60K28/066—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver actuating a signalling device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1103—Detecting eye twinkling
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/20—Workers
    • A61B2503/22—Motor vehicles operators, e.g. drivers, pilots, captains
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6814—Head
    • A61B5/6821—Eye

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physiology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transportation (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

An apparatus for monitoring the drowsiness of an operator of a vehicle or machine, includes a suitable sensor (1) positioned so as to view the eye of the wearer of said apparatus, a processor (4), memory chip (5), power source (6) and a warning device (7) connected so as to provide a warning in the event of the operator's drowsiness reaching an unacceptable level. Preferably the apparatus comprises either part of, or an attachment to a pair of spectacles. The warning device may be part of a remote device.

Description

<Desc/Clms Page number 1>
Title: Apparatus for monitoring the drowsiness of an operator of a vehicle or machine Description: The invention relates to an apparatus to be used by operators of a vehicle, or machine, for the purpose of monitoring levels of drowsiness and supplying a warning of excessive drowsiness through an emission of light, sound, or other warning device.
Such a warning device could be advantageous in preventing road traffic and industrial accidents caused by excessive operator fatigue resulting in sleep or near sleep drowsiness. The apparatus could be of use in any other field of work requiring extended periods of alertness, including the work of security guards and medical professional.
Such monitoring and warning devices have previously been designed but have either been dependant upon monitoring the inclination of the vehicle/machine operator's head (such as US Patent No. 3,999, 177, Greene, 1975), or have been composed of one or more fixtures within the vehicle operated. In particular US patent No. 6,304, 187 (Pirim, 2001) describes a method of measuring the duration of blinking episodes to provide a measurement of the operator's level of drowsiness using a device mounted in the rear-view mirror of a car. These prior art approaches may fail to compensate for movement of the operator and in particular of the operator's head during operation of the vehicle/machine.
An object of the invention is to provide a means to monitor the level of drowsiness of the vehicle/machine operator, which compensates for movement of the operator and in particular their head.
Accordingly the device for monitoring the vehicle/machine operator should be moveable with the operator's body and/or head and not dependent upon the inclination of the head for monitoring the operator's drowsiness.
The apparatus should either be capable of recognising that the vehicle/machine operator has exceeded an acceptable level of drowsiness and supply a warning, or should transmit relevant data to a remote device capable of performing the same function.
<Desc/Clms Page number 2>
In the embodiment here described the apparatus is to be worn on the head of the operator, either as an integral part of a pair of spectacles, or attachable to spectacles frame. In an alternative embodiment the apparatus could be mounted on a frame similar to that of spectacles, a headband, or hat of other fashion. The apparatus includes a CCD camera mounted so as to view the eyes of said vehicle/machine operator. This CCD camera could be exchanged for another light-, ultrasonic-or heat-sensitive device.
Figure 1 shows the preferred embodiment Figure 2 shows an idealised representation of the components as arranged in the completed device.
Figure 3 shows an alternative embodiment As shown in Figure 1 the CCD camera (1) is positioned at the articulating joint of the arm (2) and lens holding of a spectacles frame (3). The camera positioned in such a way as to view the open or closed nature of the eye, either directly or through a mirror mounted on the spectacles frame or through a semi-reflective coating applied to the inside of the spectacles lenses.
Figure 2 shows the connection of camera (1) to a processor (4). The processor to be capable of differentiating the light-reflective qualities, or temperature differential, or ultrasonic signature of the surface of the eye and/or the surface of the eyelid, thereby ascertaining the open or closed nature of the eye in real time, or close to real time, from the data supplied by the camera, or other suitable sensor. Figure 2 also shows the connection of the processor to a memory chip (5), with a connected power source (6). Said chip to be supplied with sufficient data to trigger the warning device (7) in the event of the eyes being closed for longer than a set period, or the eyelid movement fulfilling a prescribed pattern, thereby indicating an excessive level of drowsiness in the wearer.
In Figure 3 an alternate embodiment is shown in which the processor is connected to a transceiver (8) capable of transmitting the data concerning the open or closed nature of the eye to a remote device (9). Said remote device would trigger a warning system in the event of the eye's being closed for longer than a pre-set period of time, thereby indicating an excessive level of drowsiness in the vehicle/machine operator. In a further alternative embodiment the transceiver would be attached to the chip and would transmit a specific signal to a remote warning system
<Desc/Clms Page number 3>
This signal could either be part of a continual transmission of data, or a transmission commencing only when the apparatus detects an excessive level of drowsiness in the vehicle/machine operator.
It is also possible that a warning device could include such measures to improve vehicle safety as described in U. S. Patent No. 6,060, 989), including"reducing speed of said vehicle [and] turning on a flasher signal" (Gehlot, 1998, Claim 9) when the apparatus has detected an excessive level of drowsiness in the operator.
In the preferred embodiment an on/off, or reset, button is connected to the power supply of the 'trigger'device. This allows the operator to turn the apparatus on and off : when starting and stopping operation of the vehicle or machinery; when taking off and putting on the apparatus; or following the activation of the warning device and subsequent to the arousal of the vehicle/machine operator and their completion of appropriate measures.
In an alternative embodiment, where the warning system is part of a remote device attached to the vehicle or machine operated, the on/off mechanism of said warning device could be dependant on the active state of, or power supply to, that vehicle or machine and could only be activated when the vehicle or machine was in use. In the above described embodiment a'reset' button attached to the warning device, or that part of the apparatus worn by the operator, would be required to halt the action of the warning device and return it to a state in which it could be activated on the detection of a further episode of excessive drowsiness in the operator.

Claims (13)

  1. Claims: 1. An apparatus for continuous monitoring of a person's level of drowsiness and to trigger a warning device to prevent said person from falling asleep or reaching an excessive level of drowsiness including: a CCD camera, light sensor, heat sensor, ultrasonic sensor or other suitable sensor device mounted so as to continuously view the eye and the area thereof of the user of said apparatus when said apparatus is in use; said camera, or sensor providing a continuous or intermittent stream of information to an appropriate processor and memory chip, these being supplied with an appropriate power source; said processor and memory chip being capable of processing said information stream from said camera, or sensor device into a data stream including data as to the present, and/or recent, open and/or closed nature of the eye ; said processor and memory chip being capable of providing a signal to an appropriate warning device and/or activating appropriate safety measures in the event of said data stream fulfilling a predetermined pattern indicative of drowsiness, excessive drowsiness, or a condition of sleep in the user of said apparatus.
    2. An apparatus as claimed in Claim 1 mounted on, or attachable to and detachable from, or forming an integral part of the frame of a pair of spectacles, or a frame similar to that of a pair of spectacles, or a hat, or other form of head gear.
    3. An apparatus as claimed in Claim 2 where said warning device is an integrated part of the apparatus.
    4. An apparatus as claimed in Claim 2 where said warning device is, or part of, a remote device and said signal is transmitted from said processor and memory chip to said warning device via suitable transceivers.
    <Desc/Clms Page number 5>
    5. An apparatus as claimed in Claim 2 where the memory chip and warning device are, or part of, a remote device and said processor transmits said data stream to said memory chip via suitable transceivers.
    6. An apparatus as claimed in Claim 3 including an on/reset/off switch capable of activating the apparatus when required for use, deactivating the apparatus when not required for use and returning the apparatus to an active status in the event of the warning device being triggered.
    7. An apparatus as claimed in Claim 4 including an on/off switch attached to that part of the apparatus worn by the user of said apparatus, allowing the apparatus to be placed in an active or inactive state as needed and a reset switch/button attached to the warning device, which is a remote device, allowing said warning device to be deactivated and returned to a ready state after an appropriate warning has been given and necessary action taken.
    8. An apparatus as claimed in Claim 4 where the warning device, being a remote device, is only supplied with electrical power, or another suitable power supply when the vehicle, machine or other equipment operated by the user of said apparatus is in an active state and is substantially deactivated when said vehicle, machine or other equipment is not active.
    9. An apparatus as claimed in Claim 5 including a reset switch/button attached to the warning device, which is a remote device, allowing said warning device to be deactivated and returned to a ready state after an appropriate warning has been given and necessary action taken.
    10. An apparatus as claimed in Claim 5 where the warning device, being a remote device, is only supplied with electrical power, or another suitable power supply when the vehicle, machine or other equipment operated by the user of said apparatus is in an active state and is substantially deactivated when said vehicle, machine or other equipment is not active.
    11. An apparatus as claimed in Claim 2 where a mirror, or other reflective and/or semi-reflective surface constitutes a part of said apparatus and is positioned so as to allow said CCD camera, light sensor, heat sensor, ultrasonic sensor, or other suitable sensor device to view the eye and the area thereof of the user of said apparatus.
    <Desc/Clms Page number 6>
    12. An apparatus as claimed in Claim 2 where an appropriate housing contains, or forms an integral part of all or part of said apparatus 13. An apparatus substantially as herein described above and illustrated in the accompanying drawings.
    <Desc/Clms Page number 7>
    Amendments to the claims have been filed as follows Claims: 1. An apparatus for continuous monitoring of a person's level of drowsiness and to trigger a warning device to prevent said person from falling asleep or reaching an excessive level of drowsiness including: a CCD camera mounted so as to continuously view the eye and the area thereof of the user of said apparatus when said apparatus is in use; said camera providing a continuous or intermittent stream of information to an appropriate processor and memory chip, these being supplied with an appropriate power source; said processor and memory chip being capable of processing said information stream from said camera, or sensor device into a data stream including data as to the present, and/or recent, open and/or closed nature of the eye; said processor and memory chip being capable of providing a signal to an appropriate warning device and/or activating appropriate safety measures in the event of said data stream fulfilling a predetermined pattern indicative of drowsiness, excessive drowsiness, or a condition of sleep in the user of said apparatus.
  2. 2. An apparatus as claimed in Claim 1 mounted on, or attachable to and detachable from, or forming an integral part of the frame of a pair of spectacles, or a frame similar to that of a pair of spectacles, or a hat, or other form of head wear.
  3. 3. An apparatus as claimed in Claim 2 where said warning device is an integrated part of the apparatus.
  4. 4. An apparatus as claimed in Claim 2 where said warning device is, or part of, a remote device and said signal is transmitted from said processor and memory chip to said warning device via suitable transceivers.
    <Desc/Clms Page number 8>
  5. 5. An apparatus as claimed in Claim 2 where the memory chip and warning device are, or part of, a remote device and said processor transmits said data stream to said memory chip via suitable transceivers.
  6. 6. An apparatus as claimed in Claim 3 including an on/reset/off switch capable of activating the apparatus when required for use, deactivating the apparatus when not required for use and returning the apparatus to an active status in the event of the warning device being triggered.
  7. 7. An apparatus as claimed in Claim 4 including an on/off switch attached to that part of the apparatus worn by the user of said apparatus, allowing the apparatus to be placed in an active or inactive state as needed and a reset switch/button attached to the warning device, which is a remote device, allowing said warning device to be deactivated and returned to a ready state after an appropriate warning has been given and necessary action taken.
  8. 8. An apparatus as claimed in Claim 4 where the warning device, being a remote device, is only supplied with electrical power, or another suitable power supply when the vehicle, machine or other equipment operated by the user of said apparatus is in an active state and is substantially deactivated when said vehicle, machine or other equipment is not active.
  9. 9. An apparatus as claimed in Claim 5 including a reset switch/button attached to the warning device, which is a remote device, allowing said warning device to be deactivated and returned to a ready state after an appropriate warning has been given and necessary action taken.
  10. 10. An apparatus as claimed in Claim 5 where the warning device, being a remote device, is only supplied with electrical power, or another suitable power supply when the vehicle, machine or other equipment operated by the user of said apparatus is in an active state and is substantially deactivated when said vehicle, machine or other equipment is not active.
  11. 11. An apparatus as claimed in Claim 2 where a mirror, or other reflective and/or semi-reflective surface constitutes a part of said apparatus and is positioned so as to allow said CCD camera to view the eye and the area thereof of the user of said apparatus.
  12. 12. An apparatus as claimed in Claim 2 where an appropriate housing contains, or forms an integral part of all or part of said apparatus.
    <Desc/Clms Page number 9>
  13. 13. An apparatus substantially as herein described above and illustrated in the accompanying drawings.
GB0203392A 2002-02-13 2002-02-13 Monitoring drowsiness Withdrawn GB2385451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0203392A GB2385451A (en) 2002-02-13 2002-02-13 Monitoring drowsiness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0203392A GB2385451A (en) 2002-02-13 2002-02-13 Monitoring drowsiness

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GB2385451A true GB2385451A (en) 2003-08-20

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006011870A1 (en) * 2004-06-25 2006-02-02 Fergason James L Optical system for monitoring eye movement
US7347551B2 (en) 2003-02-13 2008-03-25 Fergason Patent Properties, Llc Optical system for monitoring eye movement
US7553021B2 (en) 2003-02-13 2009-06-30 Fergason Patent Properties, Llc Optical system for monitoring eye movement
US7982618B2 (en) 2007-01-29 2011-07-19 Denso Corporation Wakefulness maintaining apparatus and method of maintaining wakefulness
WO2015025306A1 (en) * 2013-08-20 2015-02-26 Assi Raid Eyeglasses for driver
JP2015211803A (en) * 2014-05-07 2015-11-26 アルプス電気株式会社 Blink detector and spectacle type electronic apparatus
WO2016096476A1 (en) * 2014-12-19 2016-06-23 Abb Ab Drowsiness alert system for an operator console
GB2571118A (en) * 2018-02-18 2019-08-21 Johnson Marvin Eye wear-attachable safety communication apparatus, safety insurance method and a system
CN110801202A (en) * 2019-10-18 2020-02-18 天津大学 Eye movement tracking video shooting system based on one-way perspective mirror
GB2596733A (en) * 2016-10-14 2022-01-05 Facense Ltd Clip-on device with inward-facing cameras

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863243A (en) * 1972-01-19 1975-01-28 Max Skolnick Sleep inhibiting alarm
GB2129989A (en) * 1982-11-10 1984-05-23 Swei Wen Cheo Sleep-preventing alarm device
GB2133598A (en) * 1983-01-10 1984-07-25 Xanadu Ltd Apparatus for producing an alarm in response to the sensed dozing of a subject
GB2145262A (en) * 1983-08-17 1985-03-20 Gunson S Colorplugs Limited Sleep onset detector
EP0280124A1 (en) * 1987-02-12 1988-08-31 Omron Tateisi Electronics Co. Doze detector
GB2285681A (en) * 1994-01-07 1995-07-19 Robert Joseph Terry Sleep warning-alarm spectacle frames
US5745038A (en) * 1997-03-21 1998-04-28 Vance; David L. Awakening alarm for motor vehicle operators
EP0908860A1 (en) * 1997-10-13 1999-04-14 Cebollas Y Derivados, S.L. Device for sensing the opening of the eyelids and the initial sleeping phase
WO2000079499A1 (en) * 1999-06-19 2000-12-28 William Munro Groves Paterson Sleep prevention device and tinnitus relief device
WO2002025615A1 (en) * 2000-09-20 2002-03-28 Eyeswide Ltd. Alerting device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863243A (en) * 1972-01-19 1975-01-28 Max Skolnick Sleep inhibiting alarm
GB2129989A (en) * 1982-11-10 1984-05-23 Swei Wen Cheo Sleep-preventing alarm device
GB2133598A (en) * 1983-01-10 1984-07-25 Xanadu Ltd Apparatus for producing an alarm in response to the sensed dozing of a subject
GB2145262A (en) * 1983-08-17 1985-03-20 Gunson S Colorplugs Limited Sleep onset detector
EP0280124A1 (en) * 1987-02-12 1988-08-31 Omron Tateisi Electronics Co. Doze detector
GB2285681A (en) * 1994-01-07 1995-07-19 Robert Joseph Terry Sleep warning-alarm spectacle frames
US5745038A (en) * 1997-03-21 1998-04-28 Vance; David L. Awakening alarm for motor vehicle operators
EP0908860A1 (en) * 1997-10-13 1999-04-14 Cebollas Y Derivados, S.L. Device for sensing the opening of the eyelids and the initial sleeping phase
WO2000079499A1 (en) * 1999-06-19 2000-12-28 William Munro Groves Paterson Sleep prevention device and tinnitus relief device
WO2002025615A1 (en) * 2000-09-20 2002-03-28 Eyeswide Ltd. Alerting device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7347551B2 (en) 2003-02-13 2008-03-25 Fergason Patent Properties, Llc Optical system for monitoring eye movement
US7553021B2 (en) 2003-02-13 2009-06-30 Fergason Patent Properties, Llc Optical system for monitoring eye movement
WO2006011870A1 (en) * 2004-06-25 2006-02-02 Fergason James L Optical system for monitoring eye movement
DE102007060696B4 (en) 2007-01-29 2016-02-04 Denso Corporation Apparatus and method for maintaining a wakefulness
US7982618B2 (en) 2007-01-29 2011-07-19 Denso Corporation Wakefulness maintaining apparatus and method of maintaining wakefulness
DE102007060696C5 (en) 2007-01-29 2018-07-19 Denso Corporation Apparatus and method for maintaining a wakefulness
WO2015025306A1 (en) * 2013-08-20 2015-02-26 Assi Raid Eyeglasses for driver
JP2015211803A (en) * 2014-05-07 2015-11-26 アルプス電気株式会社 Blink detector and spectacle type electronic apparatus
WO2016096476A1 (en) * 2014-12-19 2016-06-23 Abb Ab Drowsiness alert system for an operator console
GB2596733A (en) * 2016-10-14 2022-01-05 Facense Ltd Clip-on device with inward-facing cameras
GB2596733B (en) * 2016-10-14 2022-07-06 Facense Ltd Clip-on device with inward-facing thermal camera
GB2571118A (en) * 2018-02-18 2019-08-21 Johnson Marvin Eye wear-attachable safety communication apparatus, safety insurance method and a system
CN110801202A (en) * 2019-10-18 2020-02-18 天津大学 Eye movement tracking video shooting system based on one-way perspective mirror

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