Pyroelectric infrared sensor based lighting control device and system
US10980095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Sep 9, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a control device and a pyroelectric infrared sensor based lighting control system. The control device includes a focusing apparatus and at least two pyroelectric infrared sensors. The focusing apparatus includes at least two curved surface structural portions sequentially connected adjacent to each other. Each of the curved surface structural portions corresponds to one focusing point, the at least two pyroelectric infrared sensors are respectively disposed at respective focusing points, and the focusing apparatus is configured to focus external infrared signals onto the respective pyroelectric infrared sensors. The at least two pyroelectric infrared sensors are configured to convert changed infrared signals into voltage signals when any one of the pyroelectric infrared sensors receives the changed infrared signals, and then to control a switch status of a lighting fixture by using the voltage signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.