36 results about "Eyelid closure" patented technology

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

Biometric iris detection systems are adaptable for control of alarm conditions through the systems scanner or reader by physical actions of a user's eye and / or eye lid. An alarm condition can be set in a biometric iris detection system following a predetermined blinking pattern by a user's eyelid. An alarm condition also can be set in a biometric iris detection system following closure of a user's eyelid for a predetermined time following user identification / acceptance by the system. An alarm condition can following a predetermined movement patter of a user's eyeball (e.g., a user looks at a particular area, or areas, within a biometric reader, e.g., upper left, upper right, lower left, lower right, during user identification and acceptance procedures. The embodiments of the present invention can be carried out using biometric iris detection hardware and image processing / control software.

The present invention generally relates to a method for improving the reliability of a portion of physiological data from an image sensor monitoring an operator positioned in an operator compartment of a vehicle. An embodiment of the method includes receiving, from the image sensor, physiological data including information relating to at least one of eye, face, head, arms and body motion of the operator, identifying an indication of at least an eyelid closure, eye movement or head movement of the operator based on the physiological data; comparing at least one of the physiological data and a lighting condition within the operator compartment with a set of rules for a current operator status; and classifying the type of eyelid closure, eye movement and / or head movement by correlating the identified eyelid closure, eye movement and / or head movement and a result of the comparison.

A method and apparatus for measuring drowsiness particularly in vehicle operators measures the amplitude to velocity ratio for eyelids closing and opening during blinking as well as measuring duration of opening and closing. The average values for the amplitude to velocity ratios for opening and closing are weighted and added to give a drowsiness measure that is compared to a scale of drowsiness based on data collected from alert and drowsy subjects. Other eye movements can be used in the weighted algorithm. The scale of drowsiness predicts the onset of drowsiness levels that render an operator unfit to continue.

This invention relates to an apparatus to aid drivers by delaying the onset of drowsiness and its tendency toward slow response time and brief periods of micro sleep. The preferred embodiment uses two thermoelectric modules mounted on a belt and positioned under the armpits. The modules are most effective when placed in contact with the skin but still effective if placed over light clothing. Manual activation of the unit is preferred but it has input for optional head tilt sensor or eyelid closure sensor. It quietly alarms by sequentially cooling one of the thermoelectric modules while the other thermoelectric module is warmed slightly above body temperature. The sequential pulse driving cycle is controlled by a remote timer located in a small enclosure which is powered from a cigarette lighter plug. The drive signal duration and thus the level of alarm is controlled with a multi-position control on the enclosure.

An alertness monitoring system uses reflectance measurement of infrared light pulses to monitor eye movement of a vehicle or machine operator. The data is used to measure eye and eyelid movement for presence slow or drifting eye movements, and / or eyelid closure and optionally one or more of, absence of saccadic movement, loss of eye co-ordination, wavering eyelids, partial eye closure, and drooping eyelids as indicators of loss of attention and drowsiness. The eye movements of a subject are analysed using reflected infra red light to obtain measures of the blink amplitude velocity ratio and the saccade amplitude velocity ratio. The readings are continuously compared with eye movement data indicative of degrees of alertness so that the monitor provides an indication of the operator's fitness to operate the vehicle or machine from the point of view of drowsiness no matter how it is caused.

Systems and methods for improving the reliability of visual field test results are presented. In one embodiment, images of the eye are recorded during the presentation of visual stimuli and are displayed to the user to provide information on eye motion, eye position relative to trial lens, and eyelid closure during the test. Individual or combined images can be displayed for individual stimuli, specific test points, or points in the gaze trace in various embodiments of the invention.

The invention discloses a fatigue detecting method based on individual learning. The method includes the following steps that (1) a video of face of a detected party is shot, and frame grabbing is performed on the video so that enough samples can be obtained; (2) human face area dividing is performed on all samples by means of a human face dividing method based on skin color and approximate distribution ranges of eyes are determined through human face distribution; (3) features of human eye ranges of all samples are extracted, a threshold value that is accurately adapted to opening and closing of eyes of the detected party is obtained, and detection in allusion to the detected party is performed with the threshold value as the standard; (4) whether the detected party is in a fatigue state or not is determined by means of the obtained threshold value and percentage of eyelid closure time (PERCLOS). By means of the fatigue detecting method based on individual learning, fatigue detection of the detected party is achieved by means of an adaptive learning method in allusion to eye ranges of the detected party, pertinence and accuracy of fatigue detection can be improved, and certain innovativeness is achieved.

To monitor an attention degree (302) of a vehicle driver, a period (330) is determined on the basis of a speed of the vehicle. It is determined whether an eyelid closed time (301) and / or an eyelid closing time of the driver exceeds the period (330).

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.

An apparatus and method for determining drowsiness of a driver are provided. The apparatus includes an imaging device that obtains an image of the driver and a controller that determines (e.g., based on the image of the driver) when the driver is in a fatigue state, when the driver is in an eyelid closure state, and when the driver is in a wake-up state. The controller further determines that the driver is in a drowsiness state when after the fatigue state of the driver continues over a predetermined first time interval, the eyelid closure state and the wake-up state of the driver alternately and repetitively occur within a predetermined second time interval.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

A retracting eye drape assembly is disclosed for use around a patient's eye to seclude and seal off the operative field during eye surgery. The drape assembly includes a retraction member connected to the drape and configured to engage the patient's eyelid, an extension member connected to the retraction member or to the drape and configured to substantially enclose the patient's eyelid, and a retraction flap configured to secure the patient's eyelid in a substantially retracted position. A method of applying an eye drape assembly is disclosed. After application of the drape to the patient's face, and while the patient's eyelid is closed, the patient's eyelid is engaged by a retraction member connected to the drape and retracted. While retracted, the patient's eyelid is substantially enclosed to seclude the eyelid and eyelashes from the operational area. The secluded eyelid and eyelashes are then secured in a retracted position.

A respiratory anesthesia mask has an exposed face. The mask has an interior periphery in a continuous loop to fit a face of a patient. The mask having a centrally located exterior cylinder adapted to couple with a source of respiratory anesthesia gas. The mask has an intermediate section in a generally frusto-conical configuration between the interior periphery and the tube. Eyelid closure and protection equipment is received and supported on the face of the intermediate section of the mask. The closure and protection equipment includes two repositionable adhesive strips with interior and exterior surfaces. The closure and protection equipment includes temporary adhesive on the interior surface of the repositionable adhesive strip. In this manner, the repositionable adhesive strips are removably coupled to the face of the intermediate section of the mask.

The invention relates to an anti-addiction television watching method which comprises the following steps: 1) providing a piece of anti-addiction television watching equipment, wherein the anti-addiction television watching equipment comprises a thermoinduction infrared sensor, an on / off state detector, a high-definition camera, an eyelid recognizer and a digital signal processor; the thermoinduction infrared sensor is used for detecting the existence of television audiences; the on / off state detector is used for calculating the operation time of a television; the high-definition camera is used for acquiring audience images of the television audiences; the eyelid recognizer is connected with the high-definition camera and is used for recognizing the eyelid closure situation of the audience images; the digital signal processor is connected with the thermoinduction infrared sensor, the on / off state detector and the eyelid recognizer respectively; when the thermoinduction infrared sensor confirms the existence of the television audiences, whether anti-addiction alarm information is transmitted or not is confirmed based on the operation time and the eyelid closure situation; 2) operating the equipment.

The present invention provides a system for micromechanical treatment of unilateral eyelid closure disorder, which acquires the opening and closing angle of the uninjured eyelid through an information collection device and sends it to a terminal processor; the terminal processor processes the angle information and The signal is transmitted to the micro-mechanical device, instructing the micro-mechanical device to drive the eyelid on the affected side to move, so that the eyelid on the affected side and the eyelid on the healthy side can complete symmetrical movements at the same angle. Thus, the problem of unilateral eyelid closure disorder is solved. Information collection device. The information collection self-device and terminal processor can be embedded in the human body, or can be set on an external wearable device, which can be used in various ways and is more convenient to use.

An eyelid closure patch including a flexible transparent backing material defining a main body with a width and a length and a tab. An adhesive is applied to one surface of the backing material such that the adhesive substantially covers the main body and the tab. An overlying cover sheet covers the adhesive on the tab to define a non-adhesive tab. Methods of manufacturing an eyelid closure patches are also provided.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.

A respiratory anesthesia mask has an exposed face. The mask has an interior periphery in a continuous loop to fit a face of a patient. The mask having a centrally located exterior cylinder adapted to couple with a source of respiratory anesthesia gas. The mask has an intermediate section in a generally frusto-conical configuration between the interior periphery and the tube. Eyelid closure and protection equipment is received and supported on the face of the intermediate section of the mask. The closure and protection equipment includes two repositionable adhesive strips with interior and exterior surfaces. The closure and protection equipment includes temporary adhesive on the interior surface of the repositionable adhesive strip. In this manner, the repositionable adhesive strips are removably coupled to the face of the intermediate section of the mask.

A ophthalmic lens having an electronic system is described herein for detecting blinks using at least one transducer emitting a sound pressure wave(s) to be reflected from the inside of the eyelid when the wearer is blinking or otherwise has his / her eyelid closed. The ophthalmic lens in further embodiments may communicate with a second ophthalmic lens to confirm the detection of a blink. In at least one embodiment, the ophthalmic lens includes at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). The ophthalmic lenses may be contact lenses or intraocular lenses.

The invention provides a controller fatigue detection method and system based on probability statistical method; the controller fatigue detection method comprises: acquiring pulse value and blood pressure value of a controller, the blood pressure value including diastolic pressure value and systolic pressure value; acquiring a fatigue detection model based on probability statistical method, inputting the pulse value, the diastolic pressure value and the systolic pressure value to the fatigue detection model to obtain PERCLOS (percentage of eyelid closure over pupil, over time) value simulation results; detecting fatigue of the controller according to the PERCLOS value simulation results. According to the controller fatigue detection method and system based on probability statistical method, human physiological indexes, blood pressure value and pulse value parameters, are input to the fatigue detection model established based on probability statistical method, and PERCLOS value simulation results obtained are used for detecting fatigue. The blood pressure value and the pulse value are used to reflecting human fatigue level indirectly, and the method of acquiring the blood pressure value and pulse value is simple, easy to implement and low in cost.

The present invention generally relates to a method for improving the reliability of a portion of physiological data from an image sensor monitoring an operator positioned in an operator compartment of a vehicle. An embodiment of the method includes receiving, from the image sensor, physiological data including information relating to at least one of eye, face, head, arms and body motion of the operator, identifying an indication of at least an eyelid closure, eye movement or head movement of the operator based on the physiological data; comparing at least one of the physiological data and a lighting condition within the operator compartment with a set of rules for a current operator status; and classifying the type of eyelid closure, eye movement and / or head movement by correlating the identified eyelid closure, eye movement and / or head movement and a result of the comparison.

An apparatus and method for determining drowsiness of a driver are provided. The apparatus includes an imaging device that obtains an image of the driver and a controller that determines (e.g., based on the image of the driver) when the driver is in a fatigue state, when the driver is in an eyelid closure state, and when the driver is in a wake-up state. The controller further determines that the driver is in a drowsiness state when after the fatigue state of the driver continues over a predetermined first time interval, the eyelid closure state and the wake-up state of the driver alternately and repetitively occur within a predetermined second time interval.

An eyelid opening device convenient to adjust and used for ophthalmology nursing comprises a fixing plate, a contact plate is arranged in front of the fixing plate in a matched mode, threaded rods are movably installed on the two sides of the rear end of the contact plate respectively, two first screw holes are formed in the front face of the fixing plate, each threaded rod penetrates through the corresponding first screw hole, and two moving blocks are arranged in a frame in a matched mode. Contact blocks are installed at the rear ends of the opposite ends of the two moving blocks respectively, a control mechanism is arranged in the frame in a matched mode, and the control mechanism controls the two moving plates to move in the opposite direction or the opposite direction. According to the eyelid opening device, medical staff do not need to open eyelids with hands, physical labor of the medical staff is reduced, the situation that the medical staff pulls the eyelids all the time, and the eyelids are closed due to fatigue and hand looseness is avoided, adjustment can be conducted according to head shapes and eye positions of different patients, the frame can be independently taken down, and the operation is convenient. Disinfection treatment can be carried out, and the cleaning process is convenient.

The invention discloses an eyelid closing detection method and device, an alarm method and device, a vehicle, a medium and equipment, and belongs to the field of data processing. The method comprises the following steps: performing distance calculation on the positions of two eye reference points detected by a perception model for perceiving a person in each frame of current image to obtain the width of each current eye, and mapping the width of each current eye to a normalization interval to obtain a current width normalization value; in a preset time period, sorting the obtained current width normalization values to obtain a width time sequence queue, and performing weighted calculation on the current width normalization values in the width time sequence queue to obtain a width average value of the width time sequence queue; and comparing and judging the width average value with a width threshold value, and when the width average value is smaller than the width threshold value, determining that the eye state of the person is eyelid closing. According to the invention, the accuracy of person eyelid closure detection is improved, the false alarm rate is reduced, and the user experience is improved.

The invention discloses a fatigue driving processing method and device, and relates to the technical field of Internet of Vehicles, and the method comprises the steps: determining a fatigue driving grade according to the eyelid closure degree and / or yawning frequency of a driver; based on the fatigue driving level, starting an awakening function of a head-up display (HUD) and / or a pixel headlamp, so that the higher the fatigue driving level is, the more visual stimulation information used for awakening the driver is in the display information of the HUD and / or the pixel headlamp, or directly adjusting the display information of the HUD and / or the pixel headlamp. The higher the fatigue driving level is, the smaller the visual load represented by the display information is. According to the scheme, the awakening function of the HUD and / or the pixel headlamp can be started or the display information of the HUD and / or the pixel headlamp can be directly adjusted according to the fatigue driving level, so that the driving comfort of a driver is not affected, and the fatigue driving reminding accuracy can be improved.

The invention provides an eyelid closure patch comprising a main body comprising a front face and a back face, wherein one of the front face and back face comprises silicone adhesive at least partially covering the surface thereof, and wherein the main body comprises a semi-permeable or occlusive membrane.

The invention provides a nursing device for the neurosurgery department and aims to effectively solve the problem that a patient with severe eyelid insufficiency is inconvenient to nurse by medical staff. The nursing device comprises a main body; placing grooves are formed in the left side and the right side of the main body respectively; sliding grooves are formed in the left side and the right side in the main body respectively; an inverted-L-shaped groove is formed in the body; a sliding rod is slidably connected into the inverted-L-shaped groove; pressing rods located in the sliding grooves are arranged at the left end and the right end of the sliding rod respectively; the rear ends of the two pressing rods are inserted into the placing grooves and provided with arc-shaped pressing plates; a plurality of connecting rotating wheels are rotationally connected into the placing grooves through connecting plates; transmission rotating wheels which are located in the left-right axial direction and can rotate are arranged at the lower sides of the placing grooves; a pair of L-shaped rods are hinged to the front ends of the connecting rotating wheels and the transmission rotating wheels; every two adjacent pairs of L-shaped rods are hinged through a transmission rod; and each transmission rod is in an arc shape, and the multiple transmission rods can form an oval shape; The nursing device is simple in structure, convenient to operate, novel in conception and high in usability.

The invention discloses a blinking frequency and line-of-sight prediction method based on eye area generation network, which can be used for driver fatigue driving warning. The specific steps are as follows: Firstly, machine deep learning is used to extract the characteristic area of ​​the driver's eye captured by the camera, and the driver's eye is simulated by ellipse fitting on the feature area, and the blink frequency and The pupil position estimation method gives the blink frequency and the driver's gaze direction, which provides supporting data for the driver fatigue monitoring system and driver dynamic behavior analysis.