Smoke detector
US11615684B2 · kind B2 · utility
2Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2021 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | May 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/26
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.