System and method for monitoring the presence of a person in a monitored area

摘要

A system and a corresponding method for monitoring the presence of a person in a monitored area, includes a passive radiometer that detects radiation emitted from a predetermined monitored area in a predetermined frequency range between 1 GHz and 100 THz and that generates a radiation signal from the detected radiation, a radiation signal processor that processes the radiation signal and that generates, based on the processed radiation signal, a monitoring signal indicating the presence or absence of a person in the monitored area, and an application controller that controls an application based on the monitoring signal.

主权项

1. A system for monitoring the presence of a subject in a monitored area, comprising:
a passive radiometric sensor that detects radiation emitted from a subject in a predetermined monitored area in a predetermined frequency range between 1 GHz and 100 THz and that generates a radiation signal from the detected radiation, a radiation signal processor that processes said radiation signal to determine whether the subject is present in the predetermined monitored area and that generates, based on said processed radiation signal, a monitoring signal indicating the presence or absence of the subject in said monitored area, and an application controller that controls an application to provide a predetermined response when said monitoring signal indicates that the subject is not present, wherein said radiation signal processor generates said monitoring signal based on a comparison between said radiation signal, generated from an amount of radiation detected over a predetermined time, and a threshold determined at least during installation of the system.