Trailer lighting outage detection circuit
US9995780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jan 9, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2900/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vehicle LED lighting outage detection circuit is disclosed for detecting a fault in the LED light and automatically increasing the power drawn from the light power supply in response to the fault. A complementary detection circuit is also disclosed for detecting the increased power draw and signaling a fault to an operator. The increased power draw can be selected to be in the form of a pulse that settles to a lower power draw state after a time to avoid excessive and wasteful power draw. The system can be mounted in a vehicle and, more particularly, to a semi-tractor truck, or installed as a retrofit system into an existing semi-trailer system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.