US 11,941,960 B2
Radio frequency presence alert system
Piyush Agrawal, Cork (IE); Ankit Tiwari, South Windsor, CT (US); and Blanca Florentino Liano, Cork (IE)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 17/057,451
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
PCT Filed Jul. 12, 2019, PCT No. PCT/US2019/041525
§ 371(c)(1), (2) Date Nov. 20, 2020,
PCT Pub. No. WO2020/014562, PCT Pub. Date Jan. 16, 2020.
Claims priority of provisional application 62/697,449, filed on Jul. 13, 2018.
Prior Publication US 2021/0217284 A1, Jul. 15, 2021
Int. Cl. G08B 13/187 (2006.01); H04B 17/23 (2015.01); H04B 17/26 (2015.01); H04B 17/318 (2015.01)
CPC G08B 13/187 (2013.01) [H04B 17/23 (2015.01); H04B 17/26 (2015.01); H04B 17/318 (2015.01)] 15 Claims
OG exemplary drawing
 
1. A building system comprising:
a wireless radio device including a transmitting component configured to transmit a radio frequency (RF), and a receiving component configured to receive the RF to accomplish a primary task; and
a presence alert system configured to perform a presence alert task, the presence alert system including a sniffer configured to sample and measure a characteristic of the RF signals over time, controller-circuitry including one or more processors and one or more storage mediums, RF background data stored in at least one of the one or more storage mediums and indicative of no moving presence, a software program stored in at least one of the one or more storage mediums and executed by at least one of the one or more processors, wherein the software program is configured to evaluate the measured characteristic of the RF signals, compare the measured characteristic to the RF background data, and thereby determine motion of a presence.