US 11,861,998 B2
System and method for detecting a presence in a closed environment to be monitored, for anti-intrusion or anti-theft purpose
Enrico Rosario Alessi, Catania (IT); and Fabio Passaniti, Syracuse (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on May 11, 2022, as Appl. No. 17/742,177.
Claims priority of application No. 102021000012665 (IT), filed on May 17, 2021.
Prior Publication US 2022/0366768 A1, Nov. 17, 2022
Int. Cl. G08B 13/16 (2006.01); G08B 13/24 (2006.01)
CPC G08B 13/1645 (2013.01) [G08B 13/24 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A system for detecting a presence in an environment to be monitored, comprising:
a processor;
an electrostatic charge variation sensor coupled to the processor and configured to detect a variation of electrostatic charge in said environment and generate an electrostatic charge variation signal; and
one of a vibration sensor operatively coupled to the environment to be monitored and configured to detect an environmental vibration in the environment to be monitored and generate a vibration signal, or an environmental pressure sensor operatively coupled to the environment to be monitored and configured to detect an environmental pressure in the environment to be monitored and generate a pressure signal,
wherein the processor is configured to:
acquire, from the electrostatic charge variation sensor, the electrostatic charge variation signal;
detect, in said electrostatic charge variation signal, first signal characteristics indicative of the presence of a subject in said environment to be monitored;
acquire, from said one of the vibration sensor or the environmental pressure sensor, respectively the vibration signal or the pressure signal;
detect, in said vibration signal or pressure signal acquired, respective second signal characteristics indicative of the presence of the subject in said environment to be monitored; and
generate a warning signal if both the first and the second signal characteristics have been detected.