US 12,241,824 B2
Soot sensor system
Kayvan Hedayat, Weston, MA (US); John Hart, Lexington, OH (US); Eric Matson, Bellville, OH (US); Mark Wilson, Mansfield, OH (US); and Norman Poirier, Raynham, MA (US)
Assigned to Standard Motor Products, Long Island City, NY (US)
Filed by Standard Motor Products, Long Island City, NY (US)
Filed on Sep. 22, 2022, as Appl. No. 17/950,490.
Application 17/950,490 is a continuation of application No. 16/776,978, filed on Jan. 30, 2020, granted, now 11,467,079.
Application 16/776,978 is a continuation of application No. 15/639,166, filed on Jun. 30, 2017, granted, now 10,591,398, issued on Mar. 17, 2020.
Application 15/639,166 is a continuation of application No. 14/539,991, filed on Nov. 12, 2014, granted, now 9,696,249, issued on Jul. 4, 2017.
Claims priority of provisional application 62/028,275, filed on Jul. 23, 2014.
Claims priority of provisional application 61/903,581, filed on Nov. 13, 2013.
Prior Publication US 2023/0221234 A1, Jul. 13, 2023
Int. Cl. G01N 15/06 (2024.01); G01M 15/10 (2006.01); G01N 15/00 (2006.01)
CPC G01N 15/0656 (2013.01) [G01M 15/102 (2013.01); G01N 15/0606 (2013.01); G01N 2015/0046 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A soot sensor system comprising:
a soot sensor, wherein the soot sensor includes:
a substrate defining a first surface and a second surface opposing the first surface; and
a first and a second element each having at least one continuous loop of conductive material disposed on the first surface of the substrate; and
a controller configured to operate in a soot sensing mode and a contamination prevention mode;
wherein during the soot sensing mode, the controller is configured to sense accumulation of soot on the soot sensor; and
wherein during the contamination prevention mode, the controller is configured to cause one or more electrostatic repelling voltages to be applied to the soot sensor to repel soot and/or ash away from the soot sensor, wherein the one or more electrostatic repelling voltages includes a first and a second electrostatic repelling voltage, and wherein the controller is configured to apply the first and the second electrostatic repelling voltage to the first and second element, respectively.