An Optical Room Occupancy Sensor

An automated sensor system that determines whether rooms within a building are occupied by a person or people has many applications.
These divide broadly into the following classes: Security: Whole-site surveillance from control node, cases where a room should not be occupied, intruder detection and asset tracking.
Safety: Identification of lone workers during non-core hours and remote supervision of isolated working environments.
Confirmation of building evacuation. Management of high risk processes.
Facilities Management: Environmental controls (lighting/heating) to meeting room booking aid.
Sensors that seem to solve this problem are plentiful and it is only when they are considered in detail that their deficiencies become apparent.
This short paper makes this case and introduces a new type of sensor based on an optical method.
Access this Technical Paper

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