Apparatus with abnormality determination function and method for determining abnormality
US8633683B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 2, 2011 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The apparatus is provided with an abnormality determination means for determining abnormality of the apparatus where two different combinations of two electrodes are selected from the three electrodes, an alternating-current voltage is applied to an electrode in one combination by the voltage-applying portion to measure a value of a current flowing to the other electrode via the dielectric body by electrostatic coupling, an alternating-current voltage is applied to an electrode in another combination out of the at least two different combinations by the voltage-applying portion to measure a value of a current flowing to the other electrode via the dielectric body by electrostatic coupling, and an abnormality of the apparatus is determined from the current values measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.