Visibility sensor system
US6330519A · kind A · utility
8Cited by
23References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1998 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Nov 19, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/312
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A visibility sensor system includes a housing having a sensor head opening. A removable sensor head assembly is removably coupled to the housing within the sensor head opening. The sensor head assembly has a sensor enclosure and a connector. An electronics module is coupled to the sensor head through the connector. A rain sensor determines the presence of rain and causes shutters to cover openings in the sensor exclosure. In other embodiments, the sensor enclosure is configured to develop a pressure differential internally to minimize contamination of light source and light detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.