Fan system and detector thereof
US7852228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2009 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20209
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A fan system including a motor, a driving unit, and a detector is disclosed. The driving unit is electrically connected to the motor and generates a driving signal to drive the motor and a detection signal. The detector is electrically connected to an output terminal of the driving unit and receives a voltage signal and the detection signal. When the motor operates normally, the detector outputs an examined signal to the output terminal of the driving unit. When the motor operates abnormally, the driving unit asserts the detection signal, and the detector is controlled by the asserted detection signal to transform the examined signal to an alarm signal according to the voltage signal to detect the abnormal state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.