Method and device determining soiling of a shield
US12099019B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Nov 22, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device comprises a housing, a detector for receiving solar irradiance and for providing a detector signal providing an indication of an amount of solar irradiance received by the detector and a shield transparent to at least part of the solar irradiance to be detected, the shield and the housing providing a detector space for housing at least part of the detector. The device further comprises a first light source for emitting light to the shield and a first light sensor arranged to receive light from the first light source, arranged to provide a first signal providing an indication for an amount of light received by the first light sensor. Particles will and reflect light back to the detector space. The reflected light is received by the light sensor. Hence, a signal generated by the sensor is an indication for pollution of the shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.