Infrared detector
US9851259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Aug 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein the controller controls the alarm to generate an alarm signal in response to a determination that a difference between a current temperature and a background temperature detected by the thermopile sensor is larger than a threshold value and a determination that the areas of the thermopile sensor activated correspond to a human being.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.