A method of monitoring a target object uses a first imaging device to provide first images of a first area at a first resolution and processing the first images to detect a position of the target object in the first area. A second imaging device is used to provide second images of a second area that is a part of the first area and contains the detected position of the target object. The second images are at a second resolution that is higher than the first resolution. The second images may be analysed by a processor to determine characteristics of the target object.

A breathing detection apparatus has a first camera (12), a second camera (14) and a processing device (16). The processing device (16) is configured to perform breathing detection analysis using data relating to respective images captured by the first and second cameras (12, 14) to detect breathing characteristics of a person shown in the images.

A heat pack using supercooled aqueous salt solution that resists premature activation at low temperatures is disclosed. The heat pack comprises two sheets that are bonded together to form a laminated sheet. The heat pack has a first and second compartment. A frangible seal separates the two compartments. One of the compartments contains a supercooled aqueous salt solution. The salt solution contains 15 to 25 percent glycerin by mass.

Methods and systems are provided herein for automatically determining blood lactate levels. The method can comprise receiving bio-signal data associated with a patient; processing the bio-signal data to extract one or more bio-signal data features; generating a tensor dataset comprising the one or more bio-signal data features; and processing the tensor dataset using a machine learning model to generate an estimated blood lactate level.

A simulator for testing a capacity of an infant to travel includes a car body, a back seat in the car body, a base of a car seat assembly secured to the back seat, an infant seat secured to the base, a plurality of sensors, a plurality of force applying actuators, and a control. One set of sensors in plurality of sensors may monitor parameters for a subject positioned in the infant including oxygen saturation, pulse, and respiratory rate. Another set of the plurality of sensors may monitor a position of the infant seat relative to the base and the subject relative to the infant seat. The control is configured to operate the plurality of force applying actuators to apply lateral, vertical, and linear forces to the back seat, the base, and the infant seat to simulate car travel relative to the subject.

A system for monitoring a person may include a person-worn sensor device including at least one sensor (e.g., at least one accelerometer, magnetometer, altimeter, etc.) configured to collect sensor data and a processor to process data from the person-worn sensor device. The processor may be configured to determine or access an orientation of a physical support apparatus (e.g., bed, table, wheelchair, chair, sofa, or other structure for supporting the person), receive sensor data collected by the person-worn sensor device, calculate an orientation of the person relative to the physical support apparatus based on (a) the orientation of the physical support apparatus and (b) the sensor data collected by the person-worn sensor device, and identify, based on the determined orientation of the person relative to the physical support apparatus, a physical support apparatus exit condition indicating an occurrence or anticipated occurrence of the person exiting the physical support apparatus.

A method and apparatus is disclosed for testing hearing in infants based on pupil dilation response. It does not require sedation or depend on subjective judgments of human testers. Pupil dilation response to sound is measured by presenting on a display a visually engaging video containing periodic changes; presenting sounds synchronized with the periodic changes of the video; recording images from a camera directed in front of the display, where the camera is sensitive to infrared wavelengths; processing the images to measure pupil sizes; and processing the measured pupil sizes to determine, statistically, the presence of a pupil dilation response to the sounds.

Systems and methods for detecting determining a volume of urine in an absorbent article such as a diaper. A diaper loading application obtains a first measurement of ambient light received from a photodetector while a light source is off and a second measurement from the photodetector while the light source is transmitting light on an absorbent article. The application determines a normalized measurement of light reflected from an absorbent article by removing an ambient light signal from the second measurement based on the first measurement. The application determines, from the normalized measurement, a presence of urine in the absorbent article. The application further determines an estimated volume of urine in the absorbent article, wherein the determining is based on an elapsed time since the presence of urine and an activity state of an infant wearing the absorbent article.

The present invention protects a system for monitoring the vital signs of a user of a disposable absorbent article that comprises a sensor device, a bi-dimensional code and a receiver, such that the sensor device is placed in contact with the user and the system is triggered by the reading of the bi-dimensional code through the receiver, such that the bi-dimensional code is place inside the packaging of the disposable absorbent article.

An infant care apparatus includes a piezoelectric sensor and an infrared array sensor. The piezoelectric sensor senses a respiration rate and a heart rate of an infant. The infrared array sensor senses a body temperature and an occupancy state of the infant in a non-contact manner. The abovementioned infant care apparatus can assist in determining an abnormality of the respiration rate and the heart rate of the infant based on the occupancy state of the infant output by the infrared array sensor, so as to reduce a false alarm rate.