We know that aside from isolation, the best way to prevent the spread of Coronavirus is to detect the virus as early as possible. We also know that it isn’t always possible or efficient for an organisation to use manual thermometers to check the temperature of every employee.
Our body temperature detection system can be used as a very effective mass fever scanner, allowing organisations to simultaneously monitor the temperature of up to 30 individuals in areas in which there is a constant flow of people. Comprising of a thermal imaging camera and facial recognition technology, our Body Temperature System can provide temperature information in real time, preventing the spread of the virus to potentially thousands of other key workers and members of the public.
How do thermal imaging cameras work?
Thermal cameras detect temperature by recognizing and capturing different levels of infrared light. This light is invisible to the naked eye, but can be felt as heat if the intensity is high enough.
All objects emit some kind of infrared radiation and it’s one of the ways that heat is transferred. The hotter an object is, the more infrared radiation it produces. Thermal cameras can see this radiation and convert it to an image that we can then see with our eyes, much like how a night vision camera can capture invisible infrared light and convert it to an image that our eyes can see.
Can thermal imaging see through clothing?
Temperature variations are visible through clothing but the heavier/thicker the clothing, the less infrared is emitted as heat – that’s why clothes keep you warm in cold weather.
Body temperature detection cameras are designed to be more accurate when looking at visible skin, and the temperature of the human face is an accurate indication of body temperature. Thermal cameras may see heat radiating from a clothed area of the body but it will not in any way be an accurate indicator of body temperature.
Can thermal cameras be used to detect a virus or an infection?
When the human body reacts to an infection, body temperature increases as a direct result of the process of fighting the infection.
A body temperature detection camera is designed to detect elevated human body temperature and will raise an alert when the detected temperature exceeds a predetermined level as this may indicate the presence of an infection in that person. This is, therefore, an excellent first-line defence against allowing potentially infected individuals into a building.
How far can the camera detect?
Body temperature detection cameras should be mounted approximately 1.5m from the ground, facing at oncoming people as they walk towards the camera.
Depending on the model of camera chosen, the distance between the thermal camera and the people whose temperature is being measured should be 0.8m – 2.5m or 2m – 7m.
How accurate is the temp detection?
A stand-alone body temperature detection camera is accurate to a temperature of ±0.5 °C.
If the temperature calibration unit, known as the blackbody calibrator, is added to the installation, this increases the temperature measurement accuracy to ±0.3 °C.