Electrostatic modelling and measurement of airborne particle concentration

• Published in: IEEE transactions on instrumentation and measurement Vol. 45; no. 2; pp. 488 - 492
• Main Authors: Murnane, S.N., Barnes, R.N., Woodhead, S.R., Amadi-Echendu, J.E.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.04.1996; Institute of Electrical and Electronics Engineers
• Subjects: Atmospheric modeling; Cross-disciplinary physics: materials science; rheology; Current measurement; Electrical and electronic components, instruments and techniques; Electrodes; Electrostatic measurements; Exact sciences and technology; Instruments; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Mathematical model; Particle measurements; Physics; Pollution measurement; Rheological measurements; Rheology; Sensors; Solids; Techniques and apparatus; Triboelectricity; Electrodes; Concentration measurement; Suspended particle; Granular materials; Measuring methods; Signal processing; Instrumentation; Numerical simulation; Electrostatics; Triboelectricity
• ISSN: 0018-9456; 1557-9662
• DOI: 10.1109/19.492773

Granular airborne particles generally carry very small amounts of electric charge as a consequence of charging by the triboelectric effect. The presence of such particles induces charge of opposite polarity on a stationary conducting electrode. The amount of charge carried by the particles and the trajectories of the particles have significant random components and the signals produced are of very low level. The signal processing is further complicated by the random variation in the concentration of particles, i.e., the solid/gas ratio. This paper compares the results obtained from the electrostatic modelling of such sensors with those obtained from experiments.