Early detection of faulty deicing heaters on wide-body aircraft
US9919812B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Aug 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for monitoring a critical component (e.g., an electrical deicing heater) on an aircraft. A first electrical current is input into the critical component, a second electrical current is returned from the critical component, and an electrical differential current of the critical component is detected. The electrical differential current is the difference between the first electrical current and the second electrical current. An electrical differential current signal is generated from the detected electrical differential current. The electrical differential current signal is compared to a differential current threshold, and precautionary action is triggered based on the comparison. A deterioration trend of the critical component is monitored by tracking variations in the electrical differential current of the critical component over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.