Patent ID: 9111434
Filing Date: 2015-08-18
Classification: G01J,G08B

Abstract:
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.