Abstract
An electrical capacitance tomography (ECT) system is calibrated at the
upper and lower values of permittivity. The measured capacitances are usually
normalised and then used for image reconstruction. The conventional normalisation
approach assumes that the distribution of the materials is in parallel and hence the
normalised capacitance is a linear function of the measured capacitance. This
approach is not appropriate in most situations. In this paper an alternative
normalisation approach is derived from a series sensor model. Preliminary
experimental results show that the quality of reconstructed images can be improved
with the new normalisation approach for the situations tested.
upper and lower values of permittivity. The measured capacitances are usually
normalised and then used for image reconstruction. The conventional normalisation
approach assumes that the distribution of the materials is in parallel and hence the
normalised capacitance is a linear function of the measured capacitance. This
approach is not appropriate in most situations. In this paper an alternative
normalisation approach is derived from a series sensor model. Preliminary
experimental results show that the quality of reconstructed images can be improved
with the new normalisation approach for the situations tested.
| Original language | English |
|---|---|
| Title of host publication | 1st World Congress on Industrial Process Tomography |
| Pages | 215-218 |
| Number of pages | 4 |
| Publication status | Published - 1999 |
| Event | 1st World Congress on Industrial Process Tomography - Buxton, UK Duration: 14 Apr 1999 → 17 Apr 1999 |
Conference
| Conference | 1st World Congress on Industrial Process Tomography |
|---|---|
| City | Buxton, UK |
| Period | 14/04/99 → 17/04/99 |
Keywords
- Capacitance measurement
- Physical modelling
- Image reconstruction
- Capacitance tomography