The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2018
Filed:
Jan. 30, 2015
Ilan Abehassera, New York, NY (US);
Etienne Castanie, Tours, FR;
Jocelyn Masserot, New York, NY (US);
Dan Attali, New York, NY (US);
Olivier Costier, New York, NY (US);
Nellie Alimi, San Francisco, CA (US);
Ilan Abehassera, New York, NY (US);
Etienne Castanie, Tours, FR;
Jocelyn Masserot, New York, NY (US);
Dan Attali, New York, NY (US);
Olivier Costier, New York, NY (US);
Nellie Alimi, San Francisco, CA (US);
Other;
Abstract
A method and an apparatus are disclosed for detecting occupancy of a closed space based on Carbon Dioxide gas (CO2) concentration or change of such concentration. In various embodiments, a Base CO2 Concentration (BCC) may be measured to establish CO2 concentration in an empty closed space. An Average CO2 Concentration (ACC) may also be measured for a single average sized person. If at any time the Total CO2 Concentration (TCC) is measured to be higher than the sum of BCC and ACC, then it is determined that the presence of a person in the closed space is detected. In some embodiments, if TCC is measured to be more than BCC plus N times ACC, then it is determined that N people are present in the closed space, where N is an integer. Such determinations may be indicated by generating an alarm or alert.