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Presence Monitoring Using Thermopile-Arrays

Anwesenheitsbestimmung mittels Thermosäulen-Arrays
: Ghanem, W.; Schnupp, R.; Ryssel, H.

AMA Service GmbH, Wunstorf:
Sensor '99. Proceedings. Vol.1
Wunstorf, 1999
Sensor <9, 1999, Nürnberg>
Conference Paper
Fraunhofer IIS B ( IISB) ()
Infrared Sensor; Presence Monitoring; Thermopile

A human information and people-counting sensor using an integrated matrix array of thermopile infrared sensors with an appropriate optical system was developed and fabricated. It was designed for the detection of presence, number, and situation of human bodies in the field of view covered by the sensor. By testing this system in a laboratory with an area of 5x5m, the number of occupants was determined with a high accuracy for up to four persons in the room. Moreover, the location of a person at a distance of 2m can be determined with an accuracy of 25cm. Therefore, this developed system can be used for security and business purposes, light controllers, energy saving, and air conditioning applications. Furthermore, this system is also important for taking care and watching old, sick, and disabled people by giving the a kind of independence in their houses.