US 11,994,532 B2
Ultrasonic anemometers systems for sensing air flows in rooms and ducts
Edward A. Arens, Berkeley, CA (US); Ali Ghahramani, Berkeley, CA (US); Therese Peffer, Berkeley, CA (US); Paul Raftery, Berkeley, CA (US); Hui Zhang, Moraga, CA (US); and Michael P. Anderson, Berkeley, CA (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed by THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed on Oct. 7, 2021, as Appl. No. 17/496,239.
Application 17/496,239 is a continuation of application No. PCT/US2020/027265, filed on Apr. 8, 2020.
Claims priority of provisional application 62/830,993, filed on Apr. 8, 2019.
Prior Publication US 2022/0099697 A1, Mar. 31, 2022
Int. Cl. G01P 5/24 (2006.01); F24F 11/89 (2018.01); G01K 11/24 (2006.01); F24F 110/10 (2018.01); F24F 110/30 (2018.01)
CPC G01P 5/245 (2013.01) [F24F 11/89 (2018.01); G01K 11/24 (2013.01); F24F 2110/10 (2018.01); F24F 2110/30 (2018.01)] 24 Claims
OG exemplary drawing
 
1. A duct flow anemometer apparatus, comprising:
(a) a plurality of ultrasonic transceivers oriented towards each other in three-dimensional space, said transceivers configured to transmit and receive soundwaves along paths between transceivers; and
(b) a control processor operably coupled to the transceivers configured to activate each transceiver, detect transmitted soundwaves, measure differential times of flight (TOF) of the soundwaves of each transceiver and to determine wind velocity along each sound path;
(c) wherein said apparatus is configured to measure volumetric air flow, temperature, and both velocity and temperature distribution, within a confined directional flow within a duct; and
(d) wherein the transceivers measure averaged values of a one-directional flow within a duct cross-section that may be experiencing different velocities and temperatures at different points across the duct cross-section.