Method for determining a temperature of a variable-transparency, switchable pane and control apparatus for the pane and motor vehicle
US10782585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1334
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure relates to a method for determining a temperature of a variable-transparency, switchable pane, which has a variable-transparency layer, which is arranged to switch said pane between two transparent electrically conductive contact layers, wherein, in the method, a control apparatus of the switchable pane applies an electrical voltage to at least one of the two contact layers and determines an electric current resulting in each case from the voltage. In this case, depending on the applied voltage and the current resulting in each case, a respective ohmic resistance value and/or a combination of electrical capacitance value and ohmic resistance value of the variable-transparency layer is determined and at least one temperature value is determined therefrom by a predetermined allocation rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.