Subject Count Estimation by Using Doppler Radar Occupancy Sensor

Occupancy information and occupant counts can save significant amount of energy for occupant related building automation systems. Doppler radar occupancy detection sensor not only can detect the human presence but also has the potential to count the number of occupants. Continuous wave Doppler radar monitoring system is employed for occupant count estimation. The received signal strength (RSS) which is directly related to radar cross section is used as a measure for occupant counts. The preliminary results show RSS is a promising tool for occupant number estimation.