US 12,298,216 B2
Particle sensor and sensing method
Robert Nishida, Victoria (CA); Tyler James Johnson, Edmonton (CA); Simone Hochgreb, Cambridge (GB); and Adam Meyer Boies, Cambridge (GB)
Assigned to CAMBRIDGE ENTERPRISE LIMITED, Cambridge (GB)
Appl. No. 17/632,013
Filed by CAMBRIDGE ENTERPRISE LIMITED, Cambridge (GB)
PCT Filed Jul. 30, 2020, PCT No. PCT/GB2020/051820
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/023972, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 1911091 (GB), filed on Aug. 2, 2019; and application No. 1919455 (GB), filed on Dec. 31, 2019.
Prior Publication US 2022/0268684 A1, Aug. 25, 2022
Int. Cl. G01N 15/06 (2024.01); G01N 1/22 (2006.01); G01N 15/02 (2006.01); G01N 33/00 (2006.01); G01N 15/00 (2006.01); G01N 15/14 (2006.01)
CPC G01N 15/0656 (2013.01) [G01N 1/22 (2013.01); G01N 15/0266 (2013.01); G01N 33/0004 (2013.01); G01N 2001/2223 (2013.01); G01N 2015/0046 (2013.01); G01N 2015/1486 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An aerosol particle sensor comprising an inlet for receiving a gas sample for analysis, a bipolar diffusion charger configured to charge received aerosol particles within the received gas sample by the collision of the received aerosol particles with and transfer of charge from both positive and negative ions concurrently, and at least one electrometer configured to detect a charge of received aerosol particles thereby charged, wherein the received aerosol particles are measured by the at least one electrometer without positive and negatively charged aerosol received particles being separated from each other.