Technology accuracy APPROVED by international standards organisation

The technologies that the CTSS Thermal Screening systems use accord to the World Trade Organisations Technical guidelines and have been approved and passed tests by ASTM International - an international standards organisation for testing technical goods.

Specifically the technologies accord to standard designation E1965-98(2016) for ‘Infrared Thermometers for Intermittent Determination of patient temperatures’, and operate within an error differential of 0.3 degrees.

Camera accuracy dealing with environmental & exercise conditions

There are x2 variances to consider for delivering accurate body temperature measurement: environmental & exercise.  The CTSS technology addresses these two variances in the following ways:

Exercise

One of the main questions we get asked is around how CTSS technology deals with elevated body temperatures linked to  exercise (e.g. if someone were to run or cycle into the office, or in a gym / sports environment where intensive exercise takes place).

The important thing to note around exercise-related elevated temperatures is that they’re superficial (skin-level) increases in body temperature, not core body temperature increases - meaning that your body may feel hot to touch, but your core body temperature will remain (largely) steady.

CTSS technology uses AI technologies to deal with superficial body heat increases; the AI learns the shape signatures of a body, and focuses heat measurement on x3 different areas (identified by the green x’s below) - with the main temperature point being measured from an individual’s ‘tear ducts’ - around the person’s eyes.  The reason for focusing on the tear duct is that this provides the best indicator as to the individuals ‘core’ body temperature - rather than superficial / surface-level body temperature.  Additional body temperature reference points are the forehead and neck.

Environment

Having a constant and non-extreme environment in which the equipment operates is important - as variances in environment (e.g. heat / wind / light) can affect accuracy.  CTSS equipment should be installed in an indoor windless environment, with ambient temperatures maintained between 15 and 32 degrees.

Key other environment factors to consider - which are typical in commercial building environments - are:

• Light: equipment shouldn’t placed in direct sunlight.  Temperature monitoring equipment is particularly sensitive to light waves with a wave length of 10um to 15um, and should be placed out of direct sunlight.  N.B. the unit itself comes with an in-built illuminator to deal with low-light situations.

• Air conditioning units: equipment shouldn’t be positioned directly below air conditioning units, which create rapidly varied temperatures