Impedance Spectroscopy for Enhanced Data Collection of Conductometric Soot Sensors
Paper in proceeding, 2020

Impedance spectroscopy in the frequency range 100 Hz to 10 kHz has been applied to the Inter-Digitated Electrode (IDE) structure that is conventionally operated as a resistive sensor for the measurement of Particulate Matter (PM). The measurement of both the in-phase (resistive) and out-of-phase (capacitive) components of the impedance over this frequency range provides more data on PM as compared to DC resistance measurement only. Experimental validation confirms a more gradual change in capacitance with soot buildup as compared to the sudden reduction of resistance with dendrite formation. The effect of an additional vertical electric field for an increased capacitive sensitivity due to stimulated soot buildup has been experimentally investigated using the electrically conductive flow housing of the IDE structure as an additional suspended electrode.

Particulate matter sensing

on-board diagnostics

resistive soot sensor

exhaust gas after-treatment

impedance spectroscopy

Author

Luke M. Middelburg

Delft University of Technology

Mohammadamir Ghaderi

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems

David Bilby

Ford Motor Company

Jaco H. Visser

Ford Motor Company

Guo Qi Zhang

Reinoud F. Wolffenbuttel

Delft University of Technology

IEEE International Symposium on Industrial Electronics

Vol. 2020-June 1099-1103 9152484
9781728156354 (ISBN)

29th IEEE International Symposium on Industrial Electronics, ISIE 2020
Delft, Netherlands,

Subject Categories

Medical Laboratory and Measurements Technologies

Geotechnical Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ISIE45063.2020.9152484

More information

Latest update

3/8/2021 1