The Science Behind Oxehealth

The Science

Oxehealth is on the lookout for the things you care about and lets you know when it sees them. It is entirely contact free, using only an optical sensor and infrared illumination.


Activity alerts and reports



Our algorithms can see movement in the room, rather like a human eye would. They know where the critical objects in the room are, for example, the bed and the door. They notice movement on or through those objects and trigger the appropriate alert or note the activity down for the activity report. Crucially, by using sophisticated computer vision techniques, the algorithms can "see" without ever serving up an image for human review.


activity detection




Our activity detection solution ("AD") detects activity within a room using Oxehealth's proprietary signal processing and computer vision capability.

When someone walks into a room, AD detects that they are moving. If they continue to be active (for example, walking, talking, running, jumping), AD will detect this movement. If someone stops moving around, for example lying down to rest or sleep, AD will detect any small movements they are making, such as the rise and fall of the chest from breathing. But - if the system cannot detect even these small signs of activity, then the AD system will sound an alert.

Our activity detection, fall risk, activity tracker and sleep products are activity trackers and do not have a medical purpose or functionality. They are not patient monitors or vital signs monitors. 

VITAL SIGNS



PULSE RATE

When your heart beats, your skin flashes red. The human eye cannot see these "micro blushes" but Oxehealth's optical sensor can, using infrared light and our proprietary signal processing techniques. Our software counts the micro blushes to calculate a pulse rate.

Our research system is using the same science ("photoplethysmography" or "PPG") as the finger pulse oximeter, a wired clip you may have had placed on your finger at a GP's surgery or in hospital. The break through is Oxehealth's ability to detect PPG from many meters away, using a standard optical sensor. 

Research studies have shown the system’s accuracy in computing the pulse rate to be comparable in the accuracy of pulse rate estimation by a contact pulse oximeter.  The pulse rate functionality forms part of the Oxehealth Oxecam medical device; please see Instructions for Use for intended use, contraindications, warnings, cautions, usage directions and maintenance.

BREATHING RATE

Oxehealth's research system calculates breathing rate by counting the movements of the body created by the chest and diaphragm breathing, just as a nurse would if they were observing the patient with a stopwatch. Remarkably, the technique works through thick clothing and bedding and even when the body is partially obscured, for example by hiding under a desk.

Research studies have shown the system’s accuracy in computing the breathing rate to be comparable in the accuracy of breathing rate estimation by a conventional, contact medical device.  The breathing rate functionality forms part of the Oxehealth Oxecam medical device; please see Instructions for Use for intended use, contraindications, warnings, cautions, usage directions and maintenance.